Abrégé

Provided is a structure for coupling an electromagnetic contactor (1) that has an opening portion (9) on an arc extinguishing cover (4) and an engaging portion (23) provided on a contact support (19) of a contact mechanism (10) so as to protrude or retract into or from the opening portion by on/off driving of an electromagnetic unit (12) and a head-on unit (25) that is engaged with the engaging portion by sliding and inserting a hook portion (32) into the opening portion. This structure comprises rotation preventing portions (5a), (5b), (34a), and (34b) that prevent the head-on unit from rotating when the head-on unit is slid and coupled to the electromagnetic contactor.

Classes IPC  ?

• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H01H 50/20 - Eléments mobiles de circuits magnétiques, p.ex. armature mobiles coaxialement à la bobine
• H01H 50/54 - Dispositions de contact

Abrégé

In the present invention, a trip operation of a reversal mechanism (24) is performed by a differential lever (23) being pivoted by being pushed against a push shifter (22a) from the outside in the radial direction with a position at which the differential lever engages with a pull shifter (22b) as the pivot center, and a compensation bimetal contact surface (74) that is provided to the differential lever displacing a compensation bimetal (31). In addition, there is provided a compensation bimetal displacement amplifying means that amplifies the displacement of the compensation bimetal by, in an overloaded state in which an overcurrent flows, stopping of the displacement of the pull shifter and a subsequent displacement of the push shifter, whereby the differential lever is pivoted.

Classes IPC  ?

• H01H 61/00 - Relais électrothermiques
• H01H 61/01 - Relais électrothermiques - Détails

Abrégé

This electromagnetic contactor comprises: a fixed electromagnet (15); an operating coil (17); a movable electromagnet (16); a contact support section (50) that is fixed to the movable electromagnet, is drawn, together with the movable electromagnet, by the fixed electromagnet to a first side in a first direction when power is supplied to the operating coil, that moves, together with the movable electromagnet, to a second side in the first direction that is opposite the first side, away from the fixed electromagnet when the power to the operating coil is interrupted, and that has a window section (51h) that penetrates in a second direction that intersects the first direction; a movable contact (51c) that is installed in the window section; a contact spring (51s) that is compressed in the first direction, an end of the contact spring on the first side being fixed to an end of the window section on the first side, and an end of the contact spring on the second side pressing on the movable contact; and a spring fitting (51r) between the movable contact and the contact spring. The contact support section has recessed sections (51g, 51i) in the window section that are recessed in a third direction that intersects the first direction and the second direction.

Classes IPC  ?

• H01H 50/54 - Dispositions de contact

Abrégé

The present invention includes: a rail (2) having an upper rail engagement portion (2b) and a lower rail engagement portion (2c) at both ends in a width direction; an electric device (1) in which an upper device engagement portion (6) and a lower device engagement portion (7) that are in the shape of a hook and face each other are provided at the top and bottom of a housing bottom surface (3a), and the upper rail engagement portion is fitted into the upper device engagement portion to be engaged therewith and the lower rail engagement portion is fitted into the lower device engagement portion to be engaged therewith; spring portions (10), (11) that are arranged in the vicinity of the upper device engagement portion of the housing bottom surface and apply a spring biasing force to the upper rail engagement portion that comes into engagement with the upper device engagement portion; and an engagement retaining means (8) for retaining the engaged state between the lower rail engagement portion and the lower device engagement portion when an impact force greater than the spring biasing force is applied to the electric device.

Classes IPC  ?

• H05K 7/12 - Moyens élastiques ou moyens de serrage pour fixer un composant à la structure de l'ensemble
• H01H 45/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H02B 1/052 - Montage sur des rails

Abrégé

This latch-type electromagnetic contactor (11) comprises a movable core (33), a fixed core (32), and a core support (42). The movable core (33) can be displaced in the depth direction. The fixed core (32) faces the movable core (33) on the deep side in the depth direction and has a through-hole (41) formed to pass therethrough in the width direction thereof. The core support (42) has a plate-like shape and is inserted into the through-hole (41) to be supported on both end sides thereof. Protruding parts (81) that protrude in the depth direction are formed on the core support (42) in regions inserted into the through-hole (41).

Classes IPC  ?

• H01H 50/16 - Circuits magnétiques
• H01H 50/32 - Verrouillage mécanique des éléments mobiles

Abrégé

In a spool (22), a coil (32) is wound around a cylindrical portion (31) extending in a depth direction and flanges (33) are formed on both sides of the cylindrical portion (31) in the depth direction. An inner yoke (27) is formed in a flat-plate shape extending in parallel to the depth direction and edge portions (61) on both sides in the depth direction are fitted to the flanges (33). In the flanges (33), claw portions (41) and claw portions (51) for holding the fitted inner yoke (27) are formed.

Classes IPC  ?

• H01F 7/16 - Armatures à mouvement rectiligne
• H01H 50/44 - Bobines ou enroulements d'excitation

Abrégé

In this electromagnetic contactor (11), a main contact support (14) advances and retreats along the depth direction. In this auxiliary contact unit (21), an auxiliary contact support (24) is coupled to the main contact support (14) from the front side in the depth direction in the electromagnetic contactor (11). An engagement projection (17) is formed on a base end face (16) in the main contact support (14). An engagement recess (27) that is fitted and coupled to the engagement projection (17) is formed in the auxiliary contact support (24). The engagement projection (17) is disposed farther back than the front surface in the depth direction of the electromagnetic contactor (11).

Classes IPC  ?

• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H01H 50/54 - Dispositions de contact
• F16B 5/10 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par assemblages à baïonnette

Abrégé

A contact inversion mechanism for switching contacts is provided with a movable plate (23) which is disposed in an inversion mechanism support (20) with one end being used as a supporting point and the other end side being swingable, and which is provided with a movable contact (30a) of the contacts on one surface. The inversion mechanism support is provided with V-shaped support grooves (36a), (37a) which are formed in a pair of first movable plate holding arms (36), (37) extending parallel to each other and on which one end of the movable plate (23) is mounted as the supporting point, and a second movable plate holding arm (38) which extends from the first movable plate holding arm, against which the other end side of the movable plate leans, and which supports the movable plate in an inclined state with an inclination amount kept constant.

Classes IPC  ?

• H01H 61/01 - Relais électrothermiques - Détails

Abrégé

An electromagnetic contactor (11) comprises an upper section frame (13), a fixed contact element (21), a movable contact element (22), and a grid (51). The grid (51) is a metal plate that is formed, in the shape of the character コ when viewed from a depth direction, from a pair of side plates (52) adjacent to partitioning walls (61) of the upper section frame (13) and facing one another, and a middle plate (53) provided between base ends of the side plates (52), and a contact point section (25) is positioned inside thereof. Formed in the upper section frame (13) is a protection wall (62) that covers, within the inner peripheral surface of the grid (51), tip-end side end sections (64) of the side plates (52).

Classes IPC  ?

• H01H 9/36 - Pièces métalliques
• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques
• H01H 50/54 - Dispositions de contact

Abrégé

A contact support (12) is provided toward the front side in a predetermined depth direction, and has a groove (22) formed therein. A movable plunger (14) is provided toward the back side in the depth direction, and is driven by an electromagnetic part (13). A joint spring (16) is a leaf spring, the center of the joint spring is fixed to the movable plunger (14), and the longitudinal-direction tip end side the joint spring is inserted into the groove (22) along the short direction. A protrusion (36) is formed in the groove (22), a gap (42) serving as a recess is formed at the tip end side of the joint spring (16), and when the tip end side of the joint spring (16) is inserted into the groove (22), the gap (42) and the protrusion (36) fit to each other.

Classes IPC  ?

• H01H 50/54 - Dispositions de contact
• H01H 50/20 - Eléments mobiles de circuits magnétiques, p.ex. armature mobiles coaxialement à la bobine

Abrégé

The present invention is a thermal relay (1) that is provided, within a case, with: heat elements (8a-8c) that correspond to respective phases of a main circuit; a shifter (9) that engages in a slidable manner with an operating section (16b) of each heat element; and a contact point inversion mechanism (14) that can switch contact points (13) in coordination with sliding of the shifter. The heat elements are each provided with: a long plate-shaped bimetal (16) that is not a conduction path of the main circuit, with the operating section that engages with the shifter being provided at a longitudinal end thereof; and a heater (17) that is a conduction path of the main circuit and that comprises a first heater section (17c) that extends in the longitudinal direction while being in surface contact with a side surface of the bimetal, the first heater section transmitting heat to the bimetal by conducting an overload current.

Classes IPC  ?

• H01H 61/01 - Relais électrothermiques - Détails
• H01H 61/013 - Dispositions de chauffage pour l'actionnement de relais

Abrégé

This electromagnetic contactor comprises: a case (3) that houses a contact portion (6) having a movable contact (15a), (15b) and a fixed contact (13a), (13b) in an arc-extinguishing chamber (12); and an arc-extinguishing cover (7) that covers the arc-extinguishing chamber and is attached to the case (3). In the arc-extinguishing cover, a first engagement portion (27), (32) and a second engagement portion (26), (31) are formed to be separated from each other in the direction of attachment to the case. In the case, a third engagement portion (36) and a fourth engagement portion (35) are formed. The arc-extinguishing cover is attached to the case in a first engagement state in which the first engagement portion and the third engagement portion engage with each other. Further, the arc-extinguishing cover is attached to the case with a gap provided therebetween in a second engagement state in which the second engagement portion and the fourth engagement portion engage with each other.

Classes IPC  ?

• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques

Abrégé

A plunger-type electromagnet unit is formed by integrally incorporating a contact support (28) specifically for plunger-type electromagnets into an upper frame (11B), or a leg-type electromagnet unit is formed by integrally incorporating a contact support (55) specifically for leg-type electromagnets into the upper frame. Next, a connecting spring (18), (76) of either a plunger-type electromagnet (12) or a leg-type electromagnet (60) is inserted by sliding into an opening of a connecting insertion part (32a), (32b) or (75a), (75b) of either the plunger-type electromagnet unit or the leg-type electromagnet unit. A housing is then formed by engaging an upper edge part of a lower frame (11A) with a lower edge part of the upper frame.

Classes IPC  ?

• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 49/00 - Appareils ou procédés spécialement adaptés à la fabrication de relais ou d'éléments de relais
• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe

Abrégé

This electromagnetic contactor is provided with: a contact support unit which is fixed to a movable electromagnet, which moves towards a first side and a second side in a first direction, which is provided with a first contact element and a second contact element, and which has a first window and a second window that pass in a second direction intersecting the first direction; a first movable contact which is arranged in the first window; a first fixed contact and which is provided with a third plate and a fourth plate which is electrically connected to the third plate and which is provided on the first side with respect to the third plate; a second fixed contact which is provided with a fifth plate and a sixth plate which is electrically connected to the fifth plate and which is provided on the first side with respect to the fifth plate; the aforementioned first fixed contact and the aforementioned second fixed contact which contact and separate from the first movable contact; a second movable contact which is arranged in the second window; and a third fixed contact and a fourth fixed contact which contact and separate from second movable contact.

Classes IPC  ?

• H01H 50/16 - Circuits magnétiques
• H01H 50/54 - Dispositions de contact

Abrégé

Provided is a structure for attaching an electric device to a rail, the structure enabling elimination of tools when detaching the electric device from the rail. This structure for attaching an electric device to a rail is provided with: first engagement parts (11a), (11b) that engage with a first rail portion (2a) of the rail (2) on one side in the width direction; second engagement parts (12a), (12b) that engage with a second rail portion (2b) of the rail (2) on the other side in the width direction; a spring member (20) disposed at the front side of the first engagement parts (11a), (11b); and a slider (30) that is disposed in a manner as to be slidable back and forth on the bottom surface of a slider housing recess (14) and that is biased backward by the biasing force of the spring member (20). Upon attachment of an electric device (1) to the rail (2), the slider (30) comes into contact with the first rail portion (2a) so as to enable the biasing force of the spring member (20) to be applied to the first rail portion (2a) and to cause the second engagement parts (12a), (12b) to be in a state of pressing the second rail portion (2b).

Classes IPC  ?

• H05K 7/12 - Moyens élastiques ou moyens de serrage pour fixer un composant à la structure de l'ensemble
• H01H 9/02 - Supports, enveloppes ou capots
• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques - Détails

Abrégé

In the present invention, an inner wall (21) is formed on one vertical-direction side of an upper frame (13), and an outer wall (31) is formed on one vertical-direction side on a lower frame (12). A recess (23) that is bowed downward in the vertical direction is formed on an outer peripheral surface (22) of the inner wall (21), and a projection (33) that protrudes upward in the vertical direction is formed on an inner peripheral surface (32) of the outer wall (31). Fitting the recess (23) and the projection (33) together causes engaging parts (14) to engage the lower frame (12) and the upper frame (13). A threaded part (16) is formed on the other vertical-direction side, and the lower frame (12) and the upper frame (13), once engaged with the engaging parts (14), are fastened to each other by a single fastening screw (15).

Classes IPC  ?

• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 9/02 - Supports, enveloppes ou capots

Abrégé

The present invention comprises: first and second fixed contacts (11, 12) having first and second fixed contact points (11a, 12a); a movable contact (13) having first and second movable contact points (13a, 13b) provided at both ends in the longitudinal direction; an insulation holder (40) storing the first and second fixed contacts and the movable contact; and a pair of arc-extinguishing permanent magnets (47, 49) that extend arcs generated between the first fixed contact point and the first movable contact point and between the second fixed contact point and the second movable contact point to arc-extinguishing spaces (S1, S2) provided in a storage case (6). An inner wall of a storage case (4) and coupling members (44a, 44b) provided at the insulation holder form communication spaces (56a, 56b) communicating the first and second arc-extinguishing spaces with a space in which an electromagnet unit (3) is stored.

Classes IPC  ?

• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques
• H01H 50/38 - Elément de circuit magnétique principal dont la forme est prévue pour supprimer l'amorçage d'arc entre les contacts du relais

Abrégé

A diagnostic device (10) according to the present invention comprises: current detection units (14r, 14s, 14t) that measure current values of currents flowing in a circuit breaker; and a diagnostic unit (11) that diagnoses the cause of a break when the circuit breaker shuts off from the current values measured by the current detection units (14r, 14s, 14t), the diagnostic unit (11) diagnosing the cause of the break on the basis of the current values immediately before the circuit breaker shut off.

Classes IPC  ?

• H01H 83/02 - Interrupteurs de protection, p.ex. disjoncteur ou relais de protection actionné par des conditions électriques anormales autres que seulement les courants excessifs actionnés par courant de défaut à la terre

Abrégé

This electromagnetic contactor comprises: a fixed contact maker having a fixed contact; a movable contact maker having a movable contact capable of coming into contact with and separating from the fixed contact; an arc-extinguishing chamber that stores a contact part comprising the fixed contact and the movable contact; and an arc runner disposed within the arc-extinguishing chamber. The arc-extinguishing chamber has an insulating wall part on the side in a first direction that is the width direction of the fixed contact maker, and the arc runner is provided on the side in a second direction orthogonal to the first direction of the contact part.

Classes IPC  ?

• H01H 9/46 - Moyens pour éteindre ou empêcher des arcs entre pièces traversées par le courant utilisant des parafoudres à cornes
• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques
• H01H 50/54 - Dispositions de contact

Abrégé

This non-magnetic plate has a thin-plate shape and is detachable with respect to a shaft part of an electromagnet of an electromagnetic contactor, the non-magnetic plate including: a circular hole section that is provided in the center of the non-magnetic plate and into which the shaft part is fitted; and a cut-out section that is provided connected to the tip end and hole section of the non-magnetic plate, and facilitates insertion of the shaft part into the hole section from the tip end side.

Classes IPC  ?

• H01H 49/00 - Appareils ou procédés spécialement adaptés à la fabrication de relais ou d'éléments de relais
• H01H 50/36 - Eléments immobiles de circuit magnétique, p.ex. culasse

Abrégé

In a case (12), an engagement hole (21) is formed in a side surface in a width direction. On a cover (13), a protruding piece (22) protruding to the case (12) side is formed, and a leading end (23) of the protruding piece (22) is fitted to the engagement hole (21) from the inside. In a reset bar (34), a recessed portion (55) is formed in a predetermined range of an outer peripheral surface in a depth direction and a circumferential direction, and when in either an initial position or an automatic reset position, the reset bar prevents the leading end (23) from being pushed inward by the outer peripheral surface facing the reverse side of the protruding piece (22). When in a manual reset position, the reset bar permits the leading end (23) to be pushed inward by the recessed portion (55) facing the reverse side of the protruding piece (22).

Classes IPC  ?

• H01H 61/01 - Relais électrothermiques - Détails

Abrégé

A bimetal (21) bends when heated. When the bimetal bends, a shifter (22) is displaced by being pushed by the bimetal. A lever (23) is pivotally supported on a pivot shaft (63), and pivots by being pushed by the shifter when the shifter is displaced. When the lever pivots, a reversing mechanism is pushed by the lever from a position thereof radially outside a position thereof that is pushed by the shifter, thereby reversing a contact.

Classes IPC  ?

• H01H 61/00 - Relais électrothermiques
• H01H 61/01 - Relais électrothermiques - Détails

Abrégé

The present invention relates to a relay and an electromagnetic switch comprising the relay. The relay comprises: a capacitor; an output unit that outputs, when an electric current having a settling current value or more flows in a wire, a trip signal for blocking the electric current flowing through the wire, by being actuated by means of electric power supplied from the capacitor; a control unit that detects reduction in capacitance of the capacitor; and a notification unit that, when the reduction in capacitance is detected by the control unit, gives a notification to the outside of the relay about the reduction in capacitance.

Classes IPC  ?

• H01H 9/54 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs
• H01H 45/08 - Marques; Repères
• H02H 3/08 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge
• H01H 47/00 - Circuits autres que ceux appropriés à une application particulière du relais et prévue pour obtenir une caractéristique de fonctionnement donnée ou pour assurer un courant d'excitation donné

Abrégé

Provided is a current sensor (3) wound at least one turn in a coil shape around a measurement conductor (2a) through which a primary current flows. The current sensor comprises: an insulation wire (4) which includes a core wire (5) having a flexible rod-shaped body and an insulation coating unit (6) that covers the outer circumference of the core wire; and a coil thin wire (7), one terminal of which is electrically connected to one terminal of the core wire, and which is wound around the outer circumference of the insulation coating unit in a spiral shape and functions as a secondary coil. In addition, the other terminal of the core wire that is not electrically connected and the other terminal of the coil thin wire are taken as output terminals.

Classes IPC  ?

• G01R 15/18 - Adaptations fournissant une isolation en tension ou en courant, p.ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs inductifs, p.ex. des transformateurs
• H01F 5/06 - Isolement des enroulements
• H01F 38/28 - Transformateurs d'intensité

Abrégé

This sealed electromagnetic contactor is provided with a pair of fixed contacts (10), (11) having fixed contact points (10a), (11a), a movable contact (12) having a pair of movable contact points (12a), (12b) capable of coming into contact with or separating from the fixed contact points of the pair of fixed contacts, an electromagnet unit (7) driving the movable contact, a sealed container (4) housing the pair of fixed contacts, the movable contact, and the electromagnet unit in the same space in a sealed manner and having enclosed therein an arc-extinguishing gas, and two pairs of arc-extinguishing permanent magnets (30)-(33) arranged in the interior of the sealed container for elongating arcs occurring between the fixed contact points of the pair of fixed contacts and the pair of movable contact points of the movable contact.

Classes IPC  ?

• H01H 9/44 - Moyens pour éteindre ou empêcher des arcs entre pièces traversées par le courant utilisant des aimants de soufflage
• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques
• H01H 50/38 - Elément de circuit magnétique principal dont la forme est prévue pour supprimer l'amorçage d'arc entre les contacts du relais

Abrégé

The present invention comprises: a main contact part (21) that opens and closes an electric circuit of a main circuit by operating along a predetermined opening and closing direction; an electromagnet part (23) that switches the main contact part (21) between opening and closing; a container body (12) made of resin, the main contact part (21) and the electromagnet part (23) being arranged in the interior of said container body (12); an auxiliary contact part (22) provided to the outside of the container body (12) further toward one side in the opening and closing direction than the main contact part (21), the auxiliary contact part (22) opening and closing an electric circuit of an auxiliary circuit by operating along the opening and closing direction together with the main contact part (21); and an auxiliary contact accommodation part (13) that is made of resin and that communicates with the interior of the container body (12), the auxiliary contact part (22) being arranged in the interior of the auxiliary contact accommodation part (13). A breaking gas is sealed within the interior of the container body (12) and the auxiliary contact accommodation part (13).

Classes IPC  ?

• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H01H 50/54 - Dispositions de contact
• H01H 1/66 - Contacts scellés dans une enveloppe à vide ou remplie de gaz, p.ex. contacts à lames magnétiques

Abrégé

The present invention comprises a through hole (91) formed in a resin hermetically sealed container (11) so as to enable filling with a gas, and a screw (92) that fastens with the through hole (91) so as to seal the through hole (91).

Classes IPC  ?

• H01H 9/04 - Enveloppes étanches à la poussière, aux projections, aux éclaboussures, à l'eau ou aux flammes
• H01H 49/00 - Appareils ou procédés spécialement adaptés à la fabrication de relais ou d'éléments de relais
• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques
• H01H 50/54 - Dispositions de contact

Abrégé

The present invention comprises: a pair of fixed contact elements (10), (11) having fixed contact points (10a), (11a); a movable contact element (12) having a pair of movable contact points (12a), (12b) that are capable of moving toward and away from the fixed contact points of the pair of fixed contact elements; an electromagnet unit (7) that drives the movable contact element; and a hermetically sealed container (4) in which the pair of fixed contact elements, the movable contact element, and the electromagnet unit are hermetically sealed and stored in the same space.

Classes IPC  ?

• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 50/38 - Elément de circuit magnétique principal dont la forme est prévue pour supprimer l'amorçage d'arc entre les contacts du relais

Abrégé

The present invention comprises: a main contact part (21) that is for opening and closing an electric path of a main circuit, that has a pair of main fixed contact pieces (31) each having a main fixed contact (33) at one end thereof and each being connected to the main circuit at the other end, and that has a main movable contact piece (32) having a pair of main movable contacts (34) brought into contact with and separated from the main fixed contacts (33); a contact support (51) that supports the main movable contact piece (32); an electromagnet part (23) that is for switching the opening and closing of the main contact part (21) via the contact support (51); and a resin airtight container (15) which has the main contact part (21) and the electromagnet part (23) disposed inside thereof, and has shielding gas sealed inside thereof.

Classes IPC  ?

• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H01H 50/54 - Dispositions de contact
• H01H 1/66 - Contacts scellés dans une enveloppe à vide ou remplie de gaz, p.ex. contacts à lames magnétiques

Abrégé

This auxiliary contact unit comprises a case (21) and a case (31) which are divided widthwise. The case (21) comprises a side wall section (22) and separation wall sections (23) protruding toward the case (31) from a wall surface of the side wall section (22). The case (31) comprises a side wall section (32) in which the tips of the separation wall sections (23) are in contact with a wall surface when the case (31) is assembled with the case (21). The range surrounded by the side wall section (22), the separation wall sections (23), and the side wall section (32) serves as a contact accommodation part (41). The side wall section (32) comprises crossing wall sections (33) which protrude from the wall surface toward the side wall section (22) along the separation wall sections (23).

Classes IPC  ?

• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H01H 50/54 - Dispositions de contact

Abrégé

An auxiliary contact unit (12) attached to the side surface of an electromagnetic contactor (11) by a snap fitting (13), wherein the snap fitting (13) comprises: a protruding piece (53), which protrudes toward the electromagnetic contactor (11) and in which a distal-end part (55) formed in a hook shape engages with the electromagnetic contactor (11); and a release operation part (54) that is formed on the base-end side of the protruding piece (53) and that releases the distal-end part (55) engaged with the electromagnetic contactor (11) through flexing when pressed from the outside.

Classes IPC  ?

• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H01H 50/54 - Dispositions de contact

Abrégé

An accessory device (9) is provided with a terminal to which one end of a conductor portion (W1) of a flexible connecting electric wire W can be attached, and includes an element which exerts a prescribed effect on the operation of an electrical appliance (1). The accessory device includes a first engaging portion (27) and a second engaging portion for detachably engaging a fixed surface of the accessory device to a fixing surface of the electrical appliance, wherein the first engaging portion has a common shape, irrespective of the type of electrical appliance, and the second engaging portion is configured from a plurality of engaging portions (28), (29) in positions that differ in accordance with the shape of the fixing surface of the electrical appliance.

Classes IPC  ?

• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe

Abrégé

The present invention is an electromagnetic contactor (1) provided with: a case (3) having an arc extinction chamber (14); an arc extinction cover (8) which is mounted on the case and covers the arc extinction chamber; and terminal covers (7a) and (7b) which are disposed on the arc extinction cover and are mounted on the case. A first engagement section (17) is formed on the case, and a second engagement section (40), which engages the first engagement section thereby resulting in the terminal covers being held to the case, is formed on the terminal covers. The terminal covers are held to the case in either a first state, in which there is a gap between the first engagement section and the second engagement section, or a second state, in which the terminal covers move in a direction away from the arc extinction cover and the first engagement section and the second engagement section engage.

Classes IPC  ?

• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 50/14 - Dispositions des bornes

Abrégé

An electromagnetic contactor (1) comprising: arc extinguishing chambers (S) that are each provided with a contact point section (6); a case (3) that has an arc extinguishing chamber housing section (9) in which the arc extinguishing chambers are housed; and an arc extinguishing cover (7) that is mounted to the case and covers the arc extinguishing chamber housing section. At least one of the case and the arc extinguishing cover has first engagement sections (22, 24) and second engagement sections (23, 25), and the other has third engagement sections (26, 28) that engage with the first engagement sections and the second engagement sections. The case retains the arc extinguishing cover in a first condition, in which the first engagement sections are engaged with the third engagement sections, or in a second condition, in which the second engagement sections are engaged with the third engagement sections.

Classes IPC  ?

• H01H 9/04 - Enveloppes étanches à la poussière, aux projections, aux éclaboussures, à l'eau ou aux flammes
• H01H 50/02 - Supports; Enveloppes; Capots

Abrégé

Provided is an electric device in which components within a body frame can be easily replaced. In the present invention, an electric contactor (1) is provided with a body frame (30) that houses a contact point unit (10) and an electromagnet unit (20) in a housing section (30a). The body frame comprises a first frame (31) that includes a flexible panel section (51), a second frame (41) that faces the first frame in a first direction to form the housing section, and a snap-fit mechanism (50) that links the first frame and the second frame. The snap-fit mechanism includes an engaged section disposed on the flexible protruding panel section (51), and an engaging protruding section (55) disposed on a side wall of the second frame and engaging with the engaged section. The engaged section and the engaging protruding section are engaged by the first frame and the second frame being brought into relative proximity in the first direction, and the engagement is released by the first frame and the second frame being relatively displaced in a second direction that is orthogonal to the first direction.

Classes IPC  ?

• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 50/30 - Dispositions mécaniques en vue d'empêcher ou d'amortir les vibrations ou les chocs, p.ex. par équilibrage de l'armature

Abrégé

The reliability of an auxiliary contact unit is enhanced. An auxiliary contact unit (1) is provided with: one pair of fixed contacts (3A and 4A); a movable contact (5A) arranged so as to be able to come into contact with and separate from the one pair of fixed contacts (3A and 4A); an auxiliary contact support (10) holding the movable contact (5A) and moving in an interlocked manner with an open/close operation of an electromagnetic contactor (50); and a unit case (20) accommodating the one pair of fixed contacts (3A, 4B), the movable contact (5A), and the auxiliary contact support (10) inside an accommodation section (24) formed by arranging the respective joining parts (21a, 22a) of a first case member (21) and a second case member (22) face to face in an orthogonal direction to the moving direction of the auxiliary contact support (10). The joining parts of the first and second case members (21, 22) are air-tightly joined together.

Classes IPC  ?

• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H01H 50/54 - Dispositions de contact

Abrégé

Provided is a sealing valve (15) disposed in a flow path (16) which is disposed in a portion of a sealed container (1) and provides communication between an internal space (K) and the outside. The sealing valve is equipped with: a valve seat (17) having a valve opening (3c) opened to the outside and a seat surface formed on an inner peripheral surface thereof; a plunger (18) disposed in the flow path; and a biasing spring (19) for applying a biasing force to push the plunger toward the valve seat side such that a seat part (18a) of the plunger comes into contact with the seat surface of the valve seat. This sealing valve enters a closed state when the seat part of the plunger comes into contact with the seat surface of the valve seat and enters an open state when a supply nozzle (21) is inserted through the valve opening and moved in a direction in which the plunger is separated from the valve seat against the biasing force of the biasing spring.

Classes IPC  ?

• H01H 49/00 - Appareils ou procédés spécialement adaptés à la fabrication de relais ou d'éléments de relais
• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 50/54 - Dispositions de contact

Abrégé

The invention comprises an inside member (73), which is placed on the inside of a plate spring (34). The inside member (73) comprises: a support part (81) that contacts an end part of a first bent section (53) and supports the plate spring (34), the end part becoming the fixed-end side of the plate spring (34); and a bent-section-restricting part (82). When the plate spring (34), on being installed, is pushed in beyond the normal position to the insertion-direction inner side, the plate spring (34) contacts the bent-section-restricting part (82) at a predetermined position with respect to the first bent section (53), and is stopped thereby.

Classes IPC  ?

• H01R 4/48 - Connexions par serrage; Connexions par ressort utilisant un ressort, un clip, ou un autre organe élastique
• H01R 9/00 - Association structurelle de plusieurs éléments de connexion électrique isolés les uns des autres, p.ex. barrettes de raccordement ou blocs de connexion; Bornes ou plots de raccordement montés sur un socle ou dans un coffret; Leurs socles

Abrégé

In this invention, a tool insertion hole (25) is provided with a pair of guide surfaces (71), (72) parallel to the width direction of a plate spring (34) that face one another such that the spacing distance therebetween becomes narrower toward the depth side. The pair of guide surfaces (71), (72) are set in such a manner as to be in contact with each end surface (62) until a tool (61) reaches a position for releasing an engagement, in so doing, at least one is in a surface contact, or a contact through a straight line along the width direction, with one of the end surfaces (62).

Classes IPC  ?

• H01R 4/48 - Connexions par serrage; Connexions par ressort utilisant un ressort, un clip, ou un autre organe élastique

Abrégé

The invention comprises a linear free-end-side part (51) which is disposed in such a manner that the tip (51a) thereof protrudes towards the far side in the insertion direction and towards a terminal path (56) and a plate surface intersects with the terminal path (56). At an insertion position where the tip (19a) of a terminal part (19) has reached the tip (51a) of the free-end-side part (51), the angle (β) formed by the terminal part (19) and the free-end-side part (51) is within ±2 degrees of 45 degrees.

Classes IPC  ?

• H01R 4/48 - Connexions par serrage; Connexions par ressort utilisant un ressort, un clip, ou un autre organe élastique

Abrégé

In this invention, a first surface (41) and a second surface (42) having a level difference (d), are formed on a housing (15). When a ferrule terminal (18) is inserted, an abutting section (44) in each of wire insertion holes (21) and (24) abuts a tapered surface (19) of a collar section (17) thereby preventing further insertion. The height of the step difference (d) is set in such a manner that, in this state, the base end of the collar section (17) is disposed between the first surface (41) and the second surface (42).

Classes IPC  ?

• H01R 9/22 - Socles, p.ex. barrette, bloc, panneau
• H01R 4/48 - Connexions par serrage; Connexions par ressort utilisant un ressort, un clip, ou un autre organe élastique

Abrégé

The present invention is provided with: lead wire inserting holes L1-L12 that are formed in terminal surfaces (8A-8C) of a case (2); and a plurality of lead wire connecting sections (H1-H12), which are disposed on the case side, and which electrically connect, to contact points, core wires (35, 36) of lead wires inserted through the lead wire inserting holes. The lead wire inserting holes are arrayed in a zigzag manner.

Classes IPC  ?

• H01R 9/00 - Association structurelle de plusieurs éléments de connexion électrique isolés les uns des autres, p.ex. barrettes de raccordement ou blocs de connexion; Bornes ou plots de raccordement montés sur un socle ou dans un coffret; Leurs socles
• H01R 4/48 - Connexions par serrage; Connexions par ressort utilisant un ressort, un clip, ou un autre organe élastique

Abrégé

The contact device comprises: a housing case (2) housing a main contact mechanism (8) having fixed contacts (17), (18); external terminals (41) disposed outside of the housing case; and terminal plates (37), each passing through the housing case and electrically connecting the fixed contacts to the corresponding external terminal. Each of the terminal plates is provided with a bent portion (42) in surface contact with side surfaces (30a), (30b) from the housing case.

Classes IPC  ?

• H01H 50/14 - Dispositions des bornes

Abrégé

The present invention inhibits an arc generated at a main contact part from entering the space among the main contact part, a lid plate part, and an insulation case and inhibits making contact with an auxiliary terminal. This contact device comprises: a main contact mechanism provided with a pair of main fixed contacts (11A) and (11B) and a main movable contact (12); an auxiliary contact mechanism which is placed in a position different from that of the main contact mechanism and which is provided with auxiliary fixed contacts (21A)-(21D) and auxiliary movable contacts (22A) and (22B); a movable shaft (40) which causes the main movable contact and the auxiliary movable contacts to move in conjunction; rod-like auxiliary terminals (31A)-(31D) electrically connected to the auxiliary fixed contacts; a lid plate part (8) having holes (32A)-(32D) through which the auxiliary terminals pass; an insulation case in which the main contact mechanism and the auxiliary contact mechanism are housed and which includes an auxiliary terminal case part (34) that separates the main contact mechanism and the auxiliary terminals from each other; and a cylindrical body (7) which covers these parts exteriorly and which is joined with the lid plate part, wherein fitting parts which fit into each other are formed at a joint part between the lid plate part (8) and the auxiliary terminal case part (34).

Classes IPC  ?

• H01H 50/54 - Dispositions de contact
• H01H 50/56 - Jeux de ressorts de contact

Abrégé

An electromagnet device (17) is provided with: a fixed core (17a, 17b); a coil unit (17g) comprising spools (17e, 17f) with electromagnetic coils (17c, 17d) wound on an outer periphery thereof; a yoke (17j) fixed to one end of each of the fixed cores which have been inserted through core insertion holes (17h, 17i) of the spool; magnetic pole plates (17k, 17m) connected with another end of each of the fixed cores which have been inserted through the core insertion holes of the spool; and a movable core (17n) disposed to oppose the magnetic pole plates. The coil unit is provided with first connecting portions (30 to 33, 34 to 37, 46, 47, 38, 39) which detachably connect the yoke and the magnetic pole plates.

Classes IPC  ?

• H01F 7/127 - Assemblage
• H01F 7/16 - Armatures à mouvement rectiligne
• H01H 50/36 - Eléments immobiles de circuit magnétique, p.ex. culasse
• H01H 50/44 - Bobines ou enroulements d'excitation

Abrégé

Provided is an operation coil drive device for an electromagnetic contactor capable of reliably detecting the adsorption state of a movable iron core without using a position sensor or a timer. The present invention comprises: a current detection unit (41) that detects coil current flowing through operation coils (21d, 21e) when switching control is performed on electromagnetic contactor operation coils; and a drive control unit (36) that controls the on/off time ratio for a semiconductor switching element (40) that switches and applies power supply voltage to the operation coils, controlling same so as to be larger during closed circuit control than during holding control. The drive control unit comprises: a trajectory-for-determination setting unit (52a) that sets a trajectory for determination that continuously increases along a change trajectory for coil current detected by the current detection unit during closed circuit control; and a closed circuit state determination unit (54) that determines a contact closed circuit state caused by contact by a movable contact to a fixed contact, on the basis of the deviation between this trajectory for determination from the trajectory-for-determination setting unit and the coil current detected by the current detection unit.

Classes IPC  ?

• H01H 47/32 - Courant d'excitation fourni par un dispositif semi-conducteur

Abrégé

Provided is an operation coil drive device for an electromagnetic contactor, capable of confirming the operation resistance value for an operation coil and capable of obtaining a suitable operation coil current for operation conditions. The present invention comprises: current and voltage detection units (37, 38) that detect the current and inter-terminal voltage that flow during switching control of an operation coil in an electromagnetic contactor; and a drive control unit (35) that increases and decreases the on/off time ratio for a semiconductor switching element that switches and applies power supply voltage to the operation coil, increasing same during closed circuit control and decreasing same during holding control. The drive control unit has: a closed circuit control inductance calculation unit (51) that calculates the inductance of the operation coil immediately after commencement of closed circuit control; a closed circuit control resistance value calculation unit (52) that calculates the DC resistance value of the operation coil on the basis of said calculation results; and a closed circuit control switching correction unit (54) that corrects the on/off time ratio of the semiconductor switching element during closed circuit control, on the basis of said calculation results.

Classes IPC  ?

• H01H 47/32 - Courant d'excitation fourni par un dispositif semi-conducteur
• H01F 7/18 - Circuits en vue d'obtenir des caractéristiques de fonctionnement souhaitées, p.ex. pour un fonctionnement lent, pour l'excitation successive des enroulements, pour l'excitation à grande vitesse des enroulements
• H01H 47/00 - Circuits autres que ceux appropriés à une application particulière du relais et prévue pour obtenir une caractéristique de fonctionnement donnée ou pour assurer un courant d'excitation donné

Abrégé

Provided is an electromagnetic contactor allowing an arc-extending space to be enlarged without having to enlarge the size of the electromagnetic contactor in the direction in which the main contact mechanism housing chamber and an auxiliary contact mechanism housing chamber are arranged. This electromagnetic contactor (1) comprises a partitioning wall (11) separating the main contact mechanism housing chamber (25) from the auxiliary contact mechanism housing chamber (41). A pair of arc extension recesses (16) is formed by indenting the partitioning wall (11) toward the auxiliary contact mechanism housing chamber (41).

Classes IPC  ?

• H01H 50/54 - Dispositions de contact
• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques
• H01H 50/38 - Elément de circuit magnétique principal dont la forme est prévue pour supprimer l'amorçage d'arc entre les contacts du relais

Abrégé

Provided is an electromagnetic contactor in which infiltration of foreign matter from a main contact mechanism housing chamber into an auxiliary contact mechanism housing chamber via a through-hole in a partition wall, and infiltration of foreign matter from the auxiliary contact mechanism housing chamber into the main contact mechanism housing chamber via the through-hole, can be prevented appropriately. In an electromagnetic contactor (1), a main contact mechanism housing chamber (A) and an auxiliary contact mechanism housing chamber (B) are partitioned by a partition wall (10) having formed therein a through-hole (10a) through which a linking shaft (34) is inserted. A foreign matter infiltration-preventive mechanism (60) is disposed in the periphery of the through-hole (10a).

Classes IPC  ?

• H01H 50/54 - Dispositions de contact
• H01H 50/02 - Supports; Enveloppes; Capots

Abrégé

Provided are a contact device and an electromagnetic contact apparatus using the contact device, that enable, in a state where a main contact part and an auxiliary contact part are linked by a linking shaft, an external connection terminal of the auxiliary connection part to be drawn upward, while avoiding the main connection part. The present invention comprises the following: a main contact part (10) which comprises a pair of fixed contactors (11, 12) disposed so that a prescribed gap is maintained therebetween, and a moveable contactor (13) that is elastically supported by a linking shaft (14) and that is disposed so as to come into contact with and separate from the pair of fixed contactors; an auxiliary contact part (20) which comprises pairs of fixed contacts (23A-23D) that are disposed at positions different from the main contact part and that are disposed so that a prescribed gap is maintained therebetween, and moveable contacts (25A, 25B) that are disposed so as to be linked to the linking shaft (14) and so as to come into contact with and separate from the pair of fixed contacts; a contact housing part (5) that houses the main contact part and the auxiliary contact part; and external connection terminals (29A-29D) that are electrically linked to the pair of fixed contacts of the auxiliary contact part and that protrude from the contact housing part.

Classes IPC  ?

• H01H 50/54 - Dispositions de contact
• H01H 1/58 - Connexions électriques avec ou entre contacts; Bornes
• H01H 1/66 - Contacts scellés dans une enveloppe à vide ou remplie de gaz, p.ex. contacts à lames magnétiques
• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 50/14 - Dispositions des bornes

Abrégé

[Problem] To provide a rotary operation type switch allowing a thin and small constitution with a small dimension in depth from the operation surface to be adopted, allowing opening and closing in an open-close contact mechanism to be executed through a pressing action accompanying the rotary operation of a rotary operation body and not through a sliding movement of a mobile contact. [Solution] The rotary operation type switch comprises: a rotary operation body supported by a frame in a such a manner as to enable a rotary operation; and a plurality of open-close contact mechanisms facing the lower surface of the rotary operation body, disposed by leaving predetermined intervals in the rotation direction of the rotary operation body, and executing opening-closing actions mediated by a press-down operation. A rotating press plate is provided between the rotary operation body and the open-close contact mechanisms. Accompanying the rotary operation, the rotary operation body rotates and selectively presses each of the open-close contact mechanisms.

Classes IPC  ?

• H01H 19/63 - Contacts actionnés par des cames axiales

Abrégé

This invention provides an electromagnetic contact apparatus wherein a mobile plunger and a mobile contactor are operated stably during a release operation. This electromagnetic contact apparatus (1) comprises: a contact point mechanism (2) having a pair of fixed contactors (23, 24) and a mobile contactor (25) capable of establishing contact with and separating from the pair of fixed contactors (23, 24); an electromagnet unit (3) for driving the contact point mechanism (2), having a mobile plunger (35) coupled to the mobile contactor (25) through a coupling shaft (37); and a hermetically sealed housing chamber (4) housing the contact point mechanism (2), the coupling shaft (37), and the mobile plunger (35). The housing chamber (4) is constituted in such a manner that a contact point mechanism housing space (A), which houses the contact point mechanism (2), and a mobile plunger housing space (B), which houses the mobile plunger (35), are partitioned by a partitioning member (10), which the coupling shaft (37) is passed through. The partitioning member (10) is provided with a communicating portion (11a) wherethrough the contact point mechanism housing space (A) and the mobile plunger housing space (B) communicate.

Classes IPC  ?

• H01H 50/54 - Dispositions de contact
• H01H 50/20 - Eléments mobiles de circuits magnétiques, p.ex. armature mobiles coaxialement à la bobine

Abrégé

This terminal structure for a circuit breaker is provided with the following: a terminal fitting (35) held by housings (1, 2) of the circuit breaker; a connection space (36) provided in the terminal fitting (35); connection parts (41, 42) that electrically connect a round crimped terminal (33) which has been inserted into the connection space (36) to a terminal contact part (35a) provided at the terminal fitting (35); and slip-out-prevention parts (39, 43) that prevent the round crimped terminal (33) from slipping out of the connection space (36).

Classes IPC  ?

• H01H 73/20 - Bornes; Connexions
• H01H 73/02 - Disjoncteurs de protection à maximum de courant dans lesquels un courant excessif ouvre les contacts en libérant automatiquement une énergie mécanique emmagasinée par l'actionnement précédent d'un mécanisme à réarmement manuel - Détails
• H01R 4/48 - Connexions par serrage; Connexions par ressort utilisant un ressort, un clip, ou un autre organe élastique
• H02B 1/40 - Enveloppes; Leurs parties constitutives ou accessoires à cet effet - Parties constitutives ou accessoires

Abrégé

The present invention provides a stable operational amplifier having an enhanced frequency characteristic and also provides a charge amplifier using the same. An operational amplifier comprises: first and second push-pull circuits (11), (12) connected in parallel between positive and negative power supply lines; first and second current/voltage conversion circuits (13), (14) to which the higher potential sides of the first and second push-pull circuits (11), (12) are connected and which are connected to the positive power supply line; third and fourth current/voltage conversion circuits (15), (16) to which the lower potential sides of the first and second push-pull circuits are connected and which are connected to the negative power supply line; a first output stage (17) to which the output sides of the first and third current/voltage conversion circuits are connected; a second output stage (18) to which the output sides of the second and fourth current/voltage conversion circuits are connected; and an final output stage (19) in which bipolar transistors having the same polarity are connected between the positive power supply line and the negative power supply line. An output from the first output stage is supplied to the base of the transistor on the higher potential side of the final output stage, while an output from the second output stage is supplied to the bases of the transistors on the lower potential side of the final output stage.

Classes IPC  ?

• H03F 3/45 - Amplificateurs différentiels
• H03F 3/70 - Amplificateurs de charge

Abrégé

Provided are the following: an operational amplifier that does not detract from speed performance, that is a high-impedance input type, and that can reduce generated noise; and a charge amplifier that uses the operational amplifier. In the present invention, the following are provided: a first buffer (11) and a second buffer (12) that are disposed in parallel and that each have bipolar transistors which are connected so as to be complementary and in which emitters are mutually connected, and that have biasing diodes; a resistor (Re) that, between the buffers, is connected between the connection points between the emitters; a first current-to-voltage conversion circuit (13) and a second current-to-voltage conversion circuit (14) that connect the first and second buffers to a positive electrode power-source line and a negative electrode power-source line; first and second connection-type field effect transistors (Q15, Q25) that control the current flowing in the diodes; and an output stage (15) that is connected to the output of the first and second current-to-voltage conversion circuits. The gate of the first and the gate of the second connection-type field effect transistor serves as an input terminal.

Classes IPC  ?

• H03F 3/45 - Amplificateurs différentiels
• H03F 3/70 - Amplificateurs de charge

Abrégé

This invention provides a DC-operated polarized electromagnet in which the magnetic flux density between a plunger and an outer yoke is made uniform, improving the efficiency of the electromagnet. This invention also provides an electromagnetic contactor using said DC-operated polarized electromagnet. This DC-operated polarized electromagnet contains a plunger (21) to which armatures (23, 24) for a spool (11) that has a central opening (12) around which an excitation coil (16) is wound are attached individually, an outer yoke (31) that encloses opposing side surfaces of the spool so as to attract the first armature (23), an inner yoke (41) that is laid out inside the outer yoke so as to attract the second armature (24), and a permanent magnet (51) positioned between the outer yoke and the inner yoke. The outer yoke (31) is made thicker than the inner yoke (41), reducing magnetoresistance and dispersing concentrated magnetic flux in the plunger (21) to the outer yoke (31).

Classes IPC  ?

• H01H 50/36 - Eléments immobiles de circuit magnétique, p.ex. culasse
• H01F 7/122 - Guidage ou positionnement d'armatures, p.ex. maintien des armatures dans leur position extrême au moyen d'un aimant permanent
• H01F 7/16 - Armatures à mouvement rectiligne

Abrégé

This invention provides an electromagnetic contactor in which a shock-absorbing member and a frame are formed as a single unit, thereby producing a shock-absorption effect with a reduced number of components. Said electromagnetic contactor is provided with a first frame (11A) and a second frame (11B). An electromagnet (12) for operating the electromagnetic contactor is contained inside the first frame (11A), and a coil terminal (25) that energizes the coil of said electromagnet (12) is formed on the first frame (11A) so as to protrude from a side surface thereof. A contact mechanism that has an auxiliary contact is contained inside the second frame (11B), which has a power-supply-side terminal (32a) on one side thereof and a load-side terminal (32b) on the other side thereof. A snap-fit (37) that allows the second frame (11B) to be attached to the first frame (11A) in either a normal-direction connection state in which the coil terminal (25) and the power-supply-side terminal (32a) face the same direction or a reverse-direction connection state in which the coil terminal (25) and the load-side terminal (32b) face the same direction is formed on the first frame (11A) and the second frame (11B).

Classes IPC  ?

• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe

Abrégé

This invention provides a rail attachment apparatus for an electrical device. In said rail attachment apparatus, a slider itself is provided with biasing elasticity, making it possible to make said slider thinner and reduce the number of components. This rail attachment apparatus includes the following: a clamp (33a) that clamps onto one edge of an attachment rail (30) that is fixedly formed on an attachment surface of an electrical device; and a slider (40) that faces said clamp (33a) and is held on the other edge of the attachment rail (30) so as to be able to slide in a direction that intersects the attachment rail (30). Curved elastic parts (43a, 43b) that bias the slider (40) in the direction that makes the slider (40) clamp onto the attachment rail (30) tightly are formed as integral parts of the slider (40).

Classes IPC  ?

• H01H 45/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H05K 7/12 - Moyens élastiques ou moyens de serrage pour fixer un composant à la structure de l'ensemble

Abrégé

A polarized DC electromagnet device that is made easier to assemble without being increased in size is provided, as is an electromagnetic contactor that uses said polarized DC electromagnet device. This invention contains the following: a plunger (21) that has a first armature (23) and a second armature (24) joined to the ends thereof and passes through the tubular part (12) of a spool (11) around which an excitation coil (14) is wound; an outer yoke (31) that attracts the first armature and the second armature; an inner yoke (41) that is laid out inside the outer yoke (31) and attracts the second armature (24); and a permanent magnet (51) positioned between the outer yoke and the inner yoke. The spool (11) is provided with radially protruding flanges (13a and 13b) formed on the ends of the tubular part of the spool (11), a coil-terminal attachment part (15) formed on the first-armature-side flange (13a), and a coil terminal (17) attached to said coil-terminal attachment part.

Classes IPC  ?

• H01H 50/44 - Bobines ou enroulements d'excitation

Abrégé

Provided is an electromagnetic contact device allowing an alternating current electromagnet and a direct current electromagnet to be coupled to a contact support that is common to both. The device comprises: an electromagnet (12) constituted from either an alternating current electromagnet (12AC) having a mobile core or a direct current electromagnet (12DC) having an armature; and a contact support (36), which holds aligned a plurality of mobile contacts that are coupled to and driven by the electromagnet. Formed on the contact support is a coupling portion (40) constituted from a mobile core contact portion (41), a coupling spring front-end housing portion (46), and an armature contact portion (51) formed on the opposite side of the coupling spring front-end housing portion from the mobile core contact portion. The alternating current electromagnet (12AC) has an alternating current electromagnet coupling spring (56) inserted into a through-hole formed on the mounting surface side of the mobile core. The direct current electromagnet (12DC) has a direct current electromagnet coupling spring (161) disposed on the contact surface of the armature that contacts the armature contact portion.

Classes IPC  ?

• H01H 50/20 - Eléments mobiles de circuits magnétiques, p.ex. armature mobiles coaxialement à la bobine

Abrégé

This invention provides an electromagnetic contactor in which exacerbation of vibration by wear of snap-fit parts that connect a first frame and a second frame is minimized. Said electromagnetic contactor is provided with a first frame (11A), a second frame (11B), and snap-fit parts (37). The first frame (11A) contains an electromagnet for operating the electromagnetic contactor, and the second frame (11B) contains a contact mechanism. The snap-fit parts (37) comprise the following: an engagement protrusion (36) formed on either the first frame or the second frame; and a hook (26) that is formed on the other frame and engages with the engagement protrusion (36). Said hook (26) comprises the following: a flexible protruding plate (26a) that is formed on the open end of the first frame or the second frame so as to protrude therefrom; and an engagement section (26b) that is formed on the tip of said flexible protruding plate and engages with the aforementioned engagement protrusion (36). The flexible protruding plate (26a) is provided with elasticity so as to make the engagement section (26b) engage more deeply with the engagement protrusion (36) as wear between the engagement section (26b) and the engagement protrusion (36) progresses.

Classes IPC  ?

• H01H 50/02 - Supports; Enveloppes; Capots

Abrégé

This invention provides an electromagnetic contactor in which a movable core for an AC electromagnet and a contact support can be connected together robustly without causing orientation deviations. Said electromagnetic contactor contains the following: the aforementioned AC electromagnet (12AC), which has a fixed core (12F) and the aforementioned movable core (12M); the aforementioned contact support (36), which holds a plurality of movable contacts (35) in a line; and a connecting spring (56) that connects the movable core of the AC electromagnet to the contact support. The connecting spring comprises the following: a movable-core contact plate (56a) that passes through a through-hole (55) formed in the movable core and contacts the contact-support side of said through-hole; and a pair of curved plates (56b) that are connected to the ends of the movable-core contact plate and are accommodated inside a connecting-spring-tip accommodation section formed in the contact support. The side opposite a contact surface of the movable-core contact plate contacts the aforementioned curved plates. A concavity (56d) that protrudes away from the contact support is formed in the movable-core contact plate (56a) in a direction that intersects the lengthwise direction thereof, and two contact sections (56e and 56f) that individually contact the abovementioned through-hole are formed on either side of said concavity.

Classes IPC  ?

• H01H 50/30 - Dispositions mécaniques en vue d'empêcher ou d'amortir les vibrations ou les chocs, p.ex. par équilibrage de l'armature

Abrégé

Provided are a leakage current detection unit and a leakage current breaker whereof the conductor members are easily fabricated, for which size-reduction of the device is possible, and, in particular, which can be easily assembled. Load side conductors (11T to 11N) are disposed on one of the sides in the axial direction of a zero-phase current transformer (8), while power source side conductors (12T to 12N) are disposed on the other side in the axial direction, so that a circular core (9) is traversed by continuous and fixed pass-through conductor portions (14S, 14N) from the one of the sides in the axial direction of the zero-phase current transformer (8), and by pass-through conductor portions (13T, 13R) from the other side in the axial direction of the zero-phase current transformer (8). In this manner, the pass-through conductor portions (13T, 13R, 14S, 14N) are joined to junction portions (16T, 16R, 15S, 15N), thereby connecting the power source side conductors (12T to 12N) and the load side conductors (11T to 11N) phase by phase. In addition, insulation coating portions (18S, 18N, 17R) are provided on the exterior of the continuous and fixed portions of the pass-through conductor portion of at least the load side conductors (11S, 11N) and the power source side conductor (12R).

Classes IPC  ?

• H01H 83/02 - Interrupteurs de protection, p.ex. disjoncteur ou relais de protection actionné par des conditions électriques anormales autres que seulement les courants excessifs actionnés par courant de défaut à la terre

Abrégé

The present invention is a charging system which is provided with equipment connected to a power feed line from a contractual power supplier, and with a charger connected to a power feed line, and which, through operation of a power converter inside the charger, outputs charging power, and charges an electrical storage device, such as a battery or the like. The charger is, e.g., an EV charger (40A), and is provided with memories (431-43n) in which are stored in advance power consumption values of equipment (301-30n), a memory (43z) in which is stored in advance a rated power value capable of being output by the charger (40A) within the range of the contractual power; and a charging power calculation unit (45) which subtracts the sum of the power consumption values for currently running equipment, which are stored in the memories (431-43n), from the rated power value, and calculates charging power. A battery (51) is charged through driving of a power converter (41), using the charging power calculated by the power calculation unit (45) as the output power command value.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• H02J 7/04 - Régulation du courant ou de la tension de charge

Abrégé

　Provided is an electromagnetic contactor in which arcs, generated when a movable contactor is separated from fixed contactors, can be readily extinguished. A movable contactor (130) is disposed so as to be capable of being brought into contact with and separated from a pair of fixed contactors (111) which are disposed, at a predetermined distance from each other, in a contact housing case (102) having insulating properties. Arc-extinguishing chambers (145, 146) are formed at positions of contact between the contact of the pair of solid contactors and the contact of the movable contactor. At least the side of an inner wall surface, which comes into contact with the arc, of each of the arc extinguishing chambers is formed of a high thermal conductivity material having a higher thermal conductivity than that of a synthetic resin molding material.

Classes IPC  ?

• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques
• H01H 49/00 - Appareils ou procédés spécialement adaptés à la fabrication de relais ou d'éléments de relais
• H01H 50/38 - Elément de circuit magnétique principal dont la forme est prévue pour supprimer l'amorçage d'arc entre les contacts du relais
• H01H 50/54 - Dispositions de contact

Abrégé

An insulation monitoring device for monitoring the insulation of a power system or load equipment using, for example, an Igr method, said insulation monitoring device being provided with: a table (42g) in which monitoring-setting values (Irref) larger than a resistance component error current flowing as a result of the sum of the capacitance of a capacitor composing an input-side noise filter of the load equipment and the ground insulation capacity of the power system are set in advance in accordance with the operation schedule of the load equipment; a monitoring-setting-value calculation unit (42h) for outputting a monitoring-setting value (Irref) read from the table (42g) in accordance with the current time according to a clock (42f); an insulation determination unit (42d) for detecting defective insulation based on the reduction in the ground insulation resistance when the resistance component current extracted by an Igr extraction unit (42c) exceeds the monitoring-setting value (Irref); and an alarm output unit (42e) for outputting an appropriate alarm on the basis of the output of the insulation determination unit (42d).

Classes IPC  ?

• G01R 31/02 - Essai des appareils, des lignes ou des composants électriques pour y déceler la présence de courts-circuits, de discontinuités, de fuites ou de connexions incorrectes de lignes

Abrégé

Provided is a rotary operation switch that can open/close a make-and-break contact mechanism by means of a rotary operation of an operation button and that is low-cost, compact, and thin, having small dimensions in the depth direction from the operation surface. The rotary operation switch is configured in a manner so as to be provided with an operation button that is supported by a frame in a manner able to perform a rotary operation, and one make-and-break contact mechanism disposed facing the bottom surface of the operation button; and between the operation button and the make-and-break contact mechanism is provided an operation mechanism containing a rotary cam that performs an opening/closing operation on the make-and-break contact mechanism in lockstep with the rotary operation of the operation button.

Classes IPC  ?

• H01H 19/20 - Mécanismes moteurs permettant au déplacement angulaire de l'organe moteur de se produire dans chaque sens
• H01H 19/00 - Interrupteurs actionnés par un organe moteur qui est rotatif autour de son axe longitudinal et qui est entraîné directement par un corps solide extérieur à l'interrupteur, p.ex. une main
• H01H 19/11 - Organes mobiles; Contacts montés sur ces organes avec des moyens de repérage
• H01H 19/14 - Organes moteurs, p.ex. bouton rotatif

Abrégé

The present invention is provided with a first shutter (24) and a second shutter (25). The first shutter (24) has an insertion hole (24a) formed between a base section (18b) of an operation handle (18) and a handle opening frame (21a) formed on a cover (21), the insertion hole (24a) being disposed on the base section (18b). A gripped part (18a) inserts into the insertion hole (24a). The second shutter (25) moves in association with the gripped part (18a). At the on and off positions of the operation handle, the first shutter (24) is extended from the front and back edges of the handle opening frame in the longitudinal direction so as to shut the handle opening frame, and the second shutter is extended from the front and back ends of the insertion hole (24a) in the longitudinal direction so as to shut the insertion hole.

Classes IPC  ?

• H01H 73/06 - Boîtiers; Enveloppes; Socles; Garnitures
• H01H 73/02 - Disjoncteurs de protection à maximum de courant dans lesquels un courant excessif ouvre les contacts en libérant automatiquement une énergie mécanique emmagasinée par l'actionnement précédent d'un mécanisme à réarmement manuel - Détails
• H01H 73/12 - Moyens pour indiquer l'état de l'interrupteur

Abrégé

A trip button (22) is provided with: a push-button part (22b) provided on the top part of a button main body (22a); a joining part (22c) that is provided on the lower part of the button main body and can be joined to a trip cross bar (21); and an axial part (wire material (26a) of a torsion spring (26)) the axial line of which extends in a direction orthogonal to the direction in which the push button part is pushed, said axial part being provided in a location between the push button part of the button main body and the joining part. Furthermore, the structure is such that when the push button part is pressed, the button main body rotates around the axial part and the joining part applies pressing force to the trip cross bar. Furthermore, an opening and closing mechanism (20) (side plate (23a)) is provided with a bearing hole (25) that supports the axial part (26a) of the trip button.

Classes IPC  ?

• H01H 73/00 - Disjoncteurs de protection à maximum de courant dans lesquels un courant excessif ouvre les contacts en libérant automatiquement une énergie mécanique emmagasinée par l'actionnement précédent d'un mécanisme à réarmement manuel
• H01H 73/02 - Disjoncteurs de protection à maximum de courant dans lesquels un courant excessif ouvre les contacts en libérant automatiquement une énergie mécanique emmagasinée par l'actionnement précédent d'un mécanisme à réarmement manuel - Détails
• H01H 83/04 - Interrupteurs de protection, p.ex. disjoncteur ou relais de protection actionné par des conditions électriques anormales autres que seulement les courants excessifs actionnés par courant de défaut à la terre avec moyens de test indiquant l'aptitude de l'interrupteur ou relais de fonctionner correctement

Abrégé

[Problem] To provide a switch device having high operating reliability, wherein a switch contact part does not open or close in error even if an impact is imparted thereto from outside. [Solution] A rotating drive plate is disposed in a switch part which is capable of separating from an operation part, said rotating drive plate rotating between a standby location and a use location, driving a switch contact mechanism of the switch part in an open/close state of the operation part in an operation location when in the standby location, and driving the switch contact mechanism in an open/close state of the operation part in a standby location when in the use location. In the operation part, an engagement part is disposed which engages with the rotating drive plate when this operation part is attached and mounted to the switch part, and rotation drives this rotating drive plate from the standby location to the use location. By removing the operation part from and attaching same to the switch part, a pre-determined open/close state of the switch contact mechanism results.

Classes IPC  ?

• H01H 13/20 - Mécanismes moteurs

Abrégé

The purpose of the present invention is to improve cut off performance by shortening arc retention time. An electromagnetic contactor is provided with: fixed contact parts (118); movable contact parts (130) disposed facing the fixed contacts parts (118) so as to be capable of coming into contact therewith and being separated therefrom; and an arc-extinguishing container which forms an arc extinguishing chamber having the fixed contact parts (118) and the movable contact parts (130) accommodated therein. In the spaces between facing contact surfaces of the movable contact parts (130) and the fixed contact parts (118), at least the facing distance between contact ends of the fixed contact parts (118) and contact ends of the movable contact parts (130) is set so as to become larger in proportion to the degree of proximity with contact-end-side end surfaces.

Classes IPC  ?

• H01H 50/54 - Dispositions de contact

Abrégé

Provided is an electromagnetic contactor with which reliability of the opening and closing of a current path is improved. The electromagnetic contactor is provided with: a pair of fixed contact parts; a movable contact (132) provided with a pair of movable contact parts which are disposed at both end sides of the movable contact, and which respectively face the pair of fixed contact parts; and a shaft-like movable support body (131) which supports a central portion of the movable contact (132) in a direction in which the movable contact extends. The fixed contact parts and the movable contact (132) are accommodated inside a non-conductive insulating cylindrical body (140). An electromagnet unit (200) drives the movable support body (131) in an advancing/retracting direction, i.e. the axial direction, and causes the movable contact parts to come into contact with and be separated from the fixed contact parts. The electromagnetic contactor is also provided with slide guides (403) which restrict rotational displacement of the movable contact (132). The slide guides (403) and the insulating cylindrical body (140) are provided as separate components.

Classes IPC  ?

• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 50/54 - Dispositions de contact

Abrégé

Provided is an electromagnetic contactor that can prevent wobbling of a movable contact in the longitudinal direction when a contact mechanism is in a closing state and an opening state. An electromagnetic contactor (1) is provided with a contact mechanism (CM) that has a pair of stationary contacts (11A, 11B) and a movable contact (12) that is disposed above the pair of stationary contacts (11A, 11B) and can contact and separate from the pair of stationary contacts (11A, 11B). The movable contact (12) is disposed movably in the vertical direction on a linking shaft (37) affixed to a movable plunger (36), and also, at the center part thereof in the longitudinal direction, is held to the linking shaft (37) by being pressed by a downward biasing force provided by a contact spring (16). A plate spring member (20), which has, in the proximity of both outer ends in the longitudinal direction, a pair of biasing force imparting parts (22a, 22b) that imparts a prescribed downward biasing force to a pair of movable contact points (12d, 12e), is attached to the linking shaft (37).

Classes IPC  ?

• H01H 50/54 - Dispositions de contact

Abrégé

Provided are a contact device, which can easily extinguish an arc generated between stationary contacts and a movable contact during opening, and an electromagnetic switch using the same. The contact device is provided with a pair of stationary contacts (111, 112) fixedly disposed with a prescribed gap within an arc extinguishing chamber (102) and a movable contact (130) disposed so as to be able to contact and separate from the pair of stationary contacts within the arc extinguishing chamber. A conductive arc current reversing plate part (133), which reverses, from the movable contact, the current of the foot of an arc generated during opening that creates separation from the pair of stationary contacts, is formed in a position where the movable contact faces the pair of stationary contacts.

Classes IPC  ?

• H01H 9/46 - Moyens pour éteindre ou empêcher des arcs entre pièces traversées par le courant utilisant des parafoudres à cornes
• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques
• H01H 50/54 - Dispositions de contact

Abrégé

Provided are a contact device whereby it is possible to easily cause extinction of an arc which arises at contact parting time between a fixed contact element and a movable contact element, and an electromagnetic switch using same. The contact device comprises a contact housing case (102) which houses: a pair of fixed contact elements (111, 112) which are in fixed positions with a prescribed interstice maintained therebetween; and a movable contact element (130) which is positioned to be attachable to and detachable from the pair of fixed contact elements. End faces of the movable contact element which face the pair of fixed contact elements are formed as circular arc-shaped end faces (130a, 130b) centered on contact parts, and inner walls of the contact housing case which face the circular arc-shaped end faces of the movable contact element are formed as semi-circular cylindrical faces (102a, 102b) centered on the contact parts of the movable contact element.

Classes IPC  ?

• H01H 50/54 - Dispositions de contact
• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 50/38 - Elément de circuit magnétique principal dont la forme est prévue pour supprimer l'amorçage d'arc entre les contacts du relais

Abrégé

Provided are a leak inspection tool and a leak inspection device comprising the inspection tool that is a tool used in leak inspections of arc extinguishing chambers that partially constitute a gas-sealed structure of an electromagnetic contactor and that is capable of measuring with high precision, when compared to conventional technologies, leak volumes even when the leak rate is small. This leak inspection tool (100) comprises: a work guide (20) that is used in a vacuum and that is provided with a groove holding a flange of an arc extinguishing chamber; a cover (30) that is freely opened and closed and that can be disposed opposite a flange face of the arc extinguishing chamber with the flange of the arc extinguishing chamber being held in the groove; a sealing gasket (50) disposed to abut the flange face of the arc extinguishing chamber and the cover (30) with the flange of the arc extinguishing chamber being held in the groove and the cover (30) being closed; and a cover anchoring means to anchor the cover (30) while pressing the sealing gasket (50).

Classes IPC  ?

• G01M 3/20 - Examen de l'étanchéité des structures ou ouvrages vis-à-vis d'un fluide par utilisation d'un fluide ou en faisant le vide par détection de la présence du fluide à l'emplacement de la fuite en utilisant des révélateurs particuliers, p.ex. teinture, produits fluorescents, produits radioactifs

Abrégé

Provided is an electromagnetic switch whereby it is possible to easily detect whether a movable contact element is operating properly with respect to a pair of fixed contact elements. An electromagnetic switch comprises: a pair of fixed contact elements (6a, 6b) which are positioned in a contact housing case with a prescribed interstice maintained therebetween and interposed in a DC current path; a movable contact element (11) which is disposed to be capable of making contact with and separating from the pair of fixed contact elements; an electromagnet unit (3) which moves the movable contact element; movement state detection parts (32, 33) which detect the movement state of the movable contact element as a magnetic change; and a movement state determination part (34) which determines, on the basis of the result of the detection by the movement state detection means, whether the movement state of the movable contact element is normal.

Classes IPC  ?

• H01H 50/08 - Marques; Repères
• H01H 47/00 - Circuits autres que ceux appropriés à une application particulière du relais et prévue pour obtenir une caractéristique de fonctionnement donnée ou pour assurer un courant d'excitation donné

Abrégé

Provided is a thermal overload relay capable of preventing a reset bar from being depressed by an external cause other than a reset operation. A thermal overload relay in which the following are disposed inside a casing (2): a main bimetal which is displaced upon sensing an overload; a release lever driven by the displacement of a shifter linked to the main bimetal; a contact-point inverting mechanism which performs an inverting operation by turning the release lever, and switches a contact point; and an operation part for operating the release lever and the contact-point inverting mechanism, the operation part being provided with a reset bar (43) projecting to the outside from inside the casing and for causing the contact-point inverting mechanism to return to an initial state by a push action. A push restricting protrusion (7) for restricting a push action on the reset bar due to an external cause other than a reset action is disposed in the vicinity of the reset bar.

Classes IPC  ?

• H01H 61/01 - Relais électrothermiques - Détails

Abrégé

An objective of the present invention is to increase attractive force with respect to a movable iron core when exciting a coil, even if the coil is long. An electromagnet contactor (10) comprises a fixed contact (118a), a movable contact (130), a movable support body (131), and an electromagnet unit (200). The electromagnet unit (200) further comprises: a movable iron core (215) which is coupled to the movable support body (131) at one end side and is axially oriented in a direction along the drive direction of the movable support body (131); a fixed iron core (203) which is positioned upon the other end side of the movable iron core (215) in the axial direction coaxially with the movable iron core (215) and which extends in a direction away from the movable iron core (215); and an excitation coil (208) which is positioned at least on the outer circumference side of the fixed iron core (203). On the movable iron core (215) end side of the fixed iron core (203), a cylindrical closed-bottom depression part (203b) into which the other end side of the movable iron core (215) can be inserted in a state wherein the fixed contact part (118a) and the movable contact (130) are in contact is formed.

Classes IPC  ?

• H01H 50/36 - Eléments immobiles de circuit magnétique, p.ex. culasse
• H01H 50/20 - Eléments mobiles de circuits magnétiques, p.ex. armature mobiles coaxialement à la bobine

Abrégé

A molded case (2) is constituted of a case main body (11) and a cover (12) mounted on the upper part of the case main body. The case main body is constituted of a lower part case (13) and a middle case (14) that has a bottom part (14a) that provides a shield between the same and the lower part case and is mounted on the upper part of the lower part case. Contact parts (3, 5) and an arc extinguishing device (9) are integrated into an internal space in the lower part case, and an opening and closing mechanism (7), an overcurrent trip device (8), and an ancillary switch (10), which is an internally installed ancillary device, are integrated into an internal space in the middle case.

Classes IPC  ?

• H01H 73/06 - Boîtiers; Enveloppes; Socles; Garnitures

Abrégé

Provided is an electromagnetic contactor having high reliability by suppressing deformation of a stationary terminal that a mobile terminal contacts, at a contacting pressure, and separates from. The present invention is provided with a contact device (100) provided with: a pair of stationary terminals (111, 112) disposed maintaining a predetermined distance; and a mobile terminal (130) disposed in a manner so as to be able to contact and separate from the pair of stationary terminals. The pair of stationary terminals are provided with a support conductor (114), which is supported maintaining a predetermined distance from the ceiling of a contact housing case (102), and a C-shaped section (115) formed in a C-shape from: an upper plate (116) joined to the end of the support conductor that is within the contact housing case; an intermediate plate (117) extending downwards from the reverse side of the upper plate from another support conductor; and a lower plate (118) at the upper surface of which a contact is formed and extending from the bottom end of the intermediate plate to the other support conductor side. The contact housing case is provided with a contact receiving section (140e) that receives the surface of the lower plates of the pair of stationary terminals at the reverse side from the mobile terminal.

Classes IPC  ?

• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques

Abrégé

Provided is an electromagnetic switch that can secure a stable operation by increasing the attractive force of an electromagnet unit by increasing the flux density between a mobile plunger and a magnetic yoke. The present invention is provided with: a pair of stationary terminals (111, 112) disposed in a stationary manner maintaining a predetermined spacing within a contact housing case (102); a mobile terminal (130) provided within the contact housing case in a manner able to contact and separate from the pair of stationary terminals; and an electromagnet unit (200) that causes the mobile terminal to contact and separate from the pair of stationary terminals. The electromagnet unit has: a magnetic yoke (201, 210) that encircles an excitation coil (208); a mobile plunger (215) that is disposed in a manner able to move through a through hole provided to the magnetic yoke and that has a pole-contact face that opposes the pole-contact face of the magnetic yoke; and a linking shaft (131) that links the mobile plunger and the mobile terminal. The pole-contact face of the mobile plunger is configured from an annular protrusion that increases the flux density at a width narrower than the opposing surface of the magnetic yoke.

Classes IPC  ?

• H01H 50/20 - Eléments mobiles de circuits magnétiques, p.ex. armature mobiles coaxialement à la bobine

Abrégé

Provided is an electromagnetic contactor that makes it possible to reliably extinguish an arc by reliably preventing contact between an arc and sections other than the contact point of a fixed contact. The electromagnetic contactor is provided with a contact point device (100) comprising a pair of fixed contacts (111) and (112) that are arranged while maintaining a predetermined distance therebetween and a movable contact (130) that is arranged so as to be capable of contact with and separation from the pair of fixed contacts. An insulating cover (121) is mounted to the pair of fixed contacts (111) and (112), covers sections other than the contact point (118a) that comes into contact with the movable contact, and covers the inner surface of an insulating plate (105) that fixes and holds the fixed contacts (111) and (112).

Classes IPC  ?

• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques
• H01H 50/54 - Dispositions de contact

Abrégé

A fixed contact point (31d), a male terminal (31b), and a sections to be engaged (31e, 31f) are integrally formed into a fixed contactor (31). A press-fit engagement section (27, 29) that engages the section to be engaged through press fitting is provided in a terminal chamber (20a). The section to be engaged (31e, 31f) is press-fitted into the press-fit engagement section (27, 29) in a direction different from the direction in which a female terminal component is withdrawn from or connected to the male terminal (31b).

Classes IPC  ?

• H01H 50/14 - Dispositions des bornes
• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe

Abrégé

Provided is an electromagnetic switch capable of ensuring a stable operation by preventing the effect thereon of magnetic flux due to a conduction current. The electromagnetic switch comprises: a pair of fixed contact pieces (111, 112) fixedly arranged at a prescribed interval in a contact housing case (102); a movable contact piece (130) arranged capable of making contact with and separating from the pair of fixed contact pieces in the contact housing case; and an electromagnet unit (200) for allowing the movable contact piece to make contact with and separate from the pair of fixed contact pieces. The electromagnet unit includes: magnetic yokes (201, 210) surrounding an excitation coil (208); a movable plunger (215) having a pole contact surface opposite the pole contact surface of the magnetic yokes; and a connection shaft (131) for connecting the movable plunger with the movable contact pieces. A magnetic path is formed on the pole contact surface of the magnetic yokes, the magnetic path generating a holding force in relation to the external magnetic flux due to a conduction current generated when the movable contact piece comes in contact with the pair of fixed contact pieces.

Classes IPC  ?

• H01H 50/42 - Circuits magnétiques auxiliaires, p.ex. pour le maintien de l'armature en position de repos ou de retour de l'armature à la position de repos, pour l'amortissement ou l'accélération du mouvement

Abrégé

The present invention is provided with: a power source (100); a load (111) that is connected to the power source (100) and consumes electrical power; a power consumption measurement unit (122) that measures the power consumption of the load (111); a recording unit (125) at which the permitted power value that the load (111) can consume within the range of power supply from the power source (100) is recorded; a surplus power calculation unit (126) that calculates the difference between the permitted power value recorded at the recording unit (125) and the power consumption value measured by the power consumption measurement unit (122) as a surplus power value; and a conversion unit (135) that charges an electricity storage unit (140) by supplying from the power source (100) a power corresponding to the surplus power value. By means of the abovementioned configuration, the surplus power of the power source (100) is utilized to the greatest extent, and short-time charging and rapid charging of the electricity storage unit (140) are possible at a low cost.

Classes IPC  ?

• H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs
• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion

Abrégé

Provided is a soldering flux that improves shape retention during printing, that is capable of suppressing heat sagging, and that has high electrical reliability between conductors. A soldering flux containing an epoxy resin, an organic carboxylic acid, and a linear-structure plastic as a heat-resistant shape-retention agent, wherein the epoxy resin and the organic carboxylic acid are blended such that the equivalent of the carboxyl group in the organic carboxylic acid is 0.8-2.0 in relation to 1.0 equivalent of the epoxy group in the epoxy resin, and the epoxy resin, the organic carboxylic acid, and the linear-structure plastic are included as a total at no less than 70 mass% with respect to the total amount of flux.

Classes IPC  ?

• B23K 35/363 - Emploi de compositions spécifiées de flux pour le brasage ou le soudage
• B23K 35/26 - Emploi de matériaux spécifiés pour le soudage ou le brasage dont le principal constituant fond à moins de 400°C
• C22C 13/00 - Alliages à base d'étain

Abrégé

Provided is an electromagnetic contactor which, without using multiple permanent magnets, ensures the necessary magnetic force with one permanent magnet, and which can efficiently use the magnetic force of the permanent magnet. This electromagnetic contactor is provided with a pair of fixed contactors (111, 112) arranged maintaining a prescribed distance, a movable contactor (130) arranged so as to be able to freely contact or separate from said pair of fixed contactors, and a electromagnet unit (200) which drives the movable contactor (130). The electromagnet unit (200) is provided with: a magnetic yoke (201, 210) which surrounds a plunger drive unit; a movable plunger (215) the leading end of which is projected through an opening formed into the magnetic yoke and which is biased by a return spring; an annular permanent magnet (220) which is magnetized in the direction in which the movable plunger (215) can move, and which is fixed and arranged so as to surround a circumferential flange (216) formed on the protruding end of said movable plunger (215); and an auxiliary yoke (225) having a stepped plate (225c) arranged on the side of said annular permanent magnet opposite that of the magnetic yoke.

Classes IPC  ?

• H01H 50/42 - Circuits magnétiques auxiliaires, p.ex. pour le maintien de l'armature en position de repos ou de retour de l'armature à la position de repos, pour l'amortissement ou l'accélération du mouvement
• H01H 50/36 - Eléments immobiles de circuit magnétique, p.ex. culasse

Abrégé

Provided is an electromagnetic contactor which is more compact and has decreased height of a contact device while suppressing the electromagnetic repulsive force generated between a movable contact point and a fixed contact point. This electromagnetic contactor is provided with a contact device (100) which has a pair of fixed contactors (111, 112) arranged maintaining a prescribed distance and a movable contactor (130) arranged so as to be able to freely contact and separate from said pair of fixed contactors, and with an electromagnet unit (200) having a movable plunger (215) that can move the movable contactor of the contact device. Also provided are an airtight chamber (240) which encloses the pair of fixed contactors, the movable contactor, and the movable plunger, an outer container (101A, 101B) which covers the airtight chamber and the electromagnet unit, and a sound insulation resin layer (150) which is injected and cured between the airtight chamber and the outer container.

Classes IPC  ?

• H01H 50/30 - Dispositions mécaniques en vue d'empêcher ou d'amortir les vibrations ou les chocs, p.ex. par équilibrage de l'armature
• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 50/54 - Dispositions de contact

Abrégé

Provided is a method for mounting an electronic component on a surface-mounting substrate, wherein the stand-off height of a chip component can be accurately set. This method is provided with: a step for forming a thick film resist layer by applying, by means of a thick film coating apparatus, a resist on the mounting surface of a surface-mounting substrate having a wiring pattern formed thereon, said wiring pattern including a pair of lands for mounting an electronic component thereon; a step for pre-curing the thus formed thick film resist layer; a step for performing exposure using a mask for having, as a region to be exposed, a thick film resist layer region inside of a land to be below the electronic component, and for having other regions as regions not to be exposed; a step for forming a thick film resist layer in the inner region of the pair of lands to be below the electronic component by removing the thick film resist layer in the unexposed region by etching; a step for post-curing the thick film resist layer; a step for printing a solder paste on regions excluding the inner region of the lands; and a step for performing reflow soldering by placing the electronic component on the solder paste.

Classes IPC  ?

• H05K 3/34 - Connexions soudées

Abrégé

Provided is a surface-mounting substrate to which electronic components are surface-mounted using a lead-free solder, and which is capable of suppressing cracking of the electronic components and cracking of junction sections caused by heat cycle stress or external stress. Electronic components (4, 5) are surface-mounting to the surface-mounting substrate (1) by using a lead-free solder, and stress-alleviating sections (11a, 11b, 16) are formed in the vicinity of the substrate junction sections of the electronic components (4, 5).

Classes IPC  ?

• H05K 3/34 - Connexions soudées
• H05K 1/02 - Circuits imprimés - Détails

Abrégé

Provided are an electromagnetic switch and an adjustment method for the contact position thereof that make it possible to simultaneously drive a main contact point mechanism and an auxiliary contact point mechanism. The following are arranged in series in a contact point accommodation case (4): a main contact point accommodation section (6) that accommodates a main contact point mechanism (10) comprising a pair of fixed contacts (11a, 11b) that are arranged in a fixed manner so as to maintain a predetermined interval, and a movable contact (12) that can be brought into contact with or separated from the pair of fixed contacts; an auxiliary contact point accommodation section (7) that accommodates two or more sets of auxiliary contact point mechanisms (34A, 34B) having fixed contacts and movable contacts that can be brought into contact with or separated from the fixed contacts; and an electromagnet unit (3) that causes the movable contacts for the main contact point mechanism and the auxiliary contact point mechanisms to move.

Classes IPC  ?

• H01H 50/54 - Dispositions de contact
• H01H 49/00 - Appareils ou procédés spécialement adaptés à la fabrication de relais ou d'éléments de relais
• H01H 50/56 - Jeux de ressorts de contact
• H01H 1/66 - Contacts scellés dans une enveloppe à vide ou remplie de gaz, p.ex. contacts à lames magnétiques

Abrégé

An electromagnetic switch is provided that makes it possible to simultaneously drive at least a main contact point mechanism and a plurality of contact point mechanisms. A plurality of contact point mechanisms (9A, 9B) are provided within a contact point accommodation case (4), and said contact point mechanisms comprise movable contact points that are arranged such that it is possible to at least separate or bring into contact said movable contact points with fixed contacts. The electromagnetic switch is provided with a movable contact holding unit (15) that holds the movable contacts (14A, 14B) of the plurality of contact mechanisms, and an electromagnet unit (3) comprising a movable plunger (45) that causes the movable contact holding unit to move.

Classes IPC  ?

• H01H 50/54 - Dispositions de contact
• H01H 1/66 - Contacts scellés dans une enveloppe à vide ou remplie de gaz, p.ex. contacts à lames magnétiques

Abrégé

Provided are a contact device and an electromagnetic switch using said contact device that are capable of easily extinguishing an arc generated between a fixed contact element and a movable contact element when said contact device is open. Said contact device is provided with: a pair of fixed contact elements (111, 112) that, maintaining a specified interval, are fixed in place in an arc-extinguishing chamber (102); and the movable contact element (130), which in the arc-extinguishing chamber (102), is arranged so as to enable attachment to/removal from the pair of fixed contact elements. First arc root movement promotion sections (118b, 118c) are each formed on the pair of fixed contact elements, said first arc root movement promotion sections (118b, 118c) promoting movement of the root of the arc generated when the contact device is open, at which the movable contact element separates from the pair of fixed contact elements, in a direction away from the movable contact element. Second arc root movement promotion sections (130b, 130c) are formed on the movable contact element (130), said second arc root movement promotion sections (130b, 130c) promoting movement of the root of the arc generated when the contact device is open, at which the movable contact element separates from the pair of fixed contact elements, in a direction away from the fixed contact elements.

Classes IPC  ?

• H01H 9/44 - Moyens pour éteindre ou empêcher des arcs entre pièces traversées par le courant utilisant des aimants de soufflage
• H01H 33/18 - Moyens pour éteindre ou empêcher des arcs entre organes traversés par le courant utilisant des aimants de soufflage
• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques

Abrégé

Provided is a switch that makes it easy to form a hermetically sealed enclosure. Said switch contains the following inside an arc-extinguishing enclosure (102): a pair of fixed contacts (104A, 104B) kept at a prescribed separation from each other; and a movable contact (106) provided so as to be able to contact and separate from the pair of fixed contacts. The arc-extinguishing enclosure (102) comprises the following: a barrel-shaped metal body (103) with an open top; an insulating holding member (105) that holds the pair of fixed contacts, which are disposed on the inside-surface side of the barrel-shaped metal body, opposite the movable contact; and a barrel-shaped resin cover (107) that has an open bottom end and covers the pair of fixed contacts and the movable contact from the open-end side of the barrel-shaped metal body. An adhesive is used to seal the perimeter of the open end of the resin cover (107) to the bottom surface of the barrel-shaped metal body (103).

Classes IPC  ?

• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques
• H01H 50/04 - Montage complet de relais ou d'éléments de relais sur un support ou à l'intérieur d'une enveloppe
• H01H 50/38 - Elément de circuit magnétique principal dont la forme est prévue pour supprimer l'amorçage d'arc entre les contacts du relais

Abrégé

Provided is an electromagnetic contactor that suppresses, at least, the contact sound produced when a movable plunger moves a contact mechanism to a closed position. Said electromagnetic contactor is provided with the following: a contact mechanism (100) provided with a pair of fixed contacts (111, 112), kept at a prescribed separation from each other, and a movable contact (130), provided so as to be able to contact and separate from the pair of fixed contacts; and an electromagnet unit (200) that drives the movable contact. Said electromagnet unit is provided with the following: a magnetic yoke (201) that surrounds a plunger drive unit; a movable plunger (215), the tip of which protrudes through an opening (210a) formed in the magnetic yoke, with a peripheral flange (216) formed on the protruding-end side of said movable plunger; a movement restriction part that restricts the movement of the peripheral flange on the moveable plunger to either a closed position or an open position for the contact mechanism; and a contact-sound suppression member (240) that suppresses the contact sound produced when the peripheral flange on the movable plunger contacts the movement restriction part.

Classes IPC  ?

• H01H 50/30 - Dispositions mécaniques en vue d'empêcher ou d'amortir les vibrations ou les chocs, p.ex. par équilibrage de l'armature

Abrégé

Provided are a contact device and an electromagnetic switch using said contact device that are capable of easily extinguishing an arc generated between a fixed contact element and a movable contact element when said contact device is open. Said contact device is provided with: a pair of fixed contact elements (6a, 6b) that, maintaining a specified interval, are fixed in place in an arc-extinguishing chamber; and the movable contact element (11), which is arranged so as to enable attachment to/removal from the pair of fixed contact elements. An arc root movement promotion section (12) is formed on the movable contact element (11), said arc root movement promotion section (12) promoting movement of the root of the arc generated when the contact device is open, at which the movable contact element separates from the pair of fixed contact elements.

Classes IPC  ?

• H01H 50/00 - INTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION - Détails des relais électromagnétiques
• H01H 50/54 - Dispositions de contact
• H01H 50/38 - Elément de circuit magnétique principal dont la forme est prévue pour supprimer l'amorçage d'arc entre les contacts du relais

Abrégé

Provided is a switch enabling a sealed container to be readily formed. A switch in which a pair of fixed contactors (111, 112) arranged so that a predetermined space is maintained and a movable contactor (130) disposed so as to be able to approach and draw away from the pair of fixed contactors are furnished within an electric arc-extinguishing container (102). The electric arc-extinguishing container (102) includes a terminal holding plate section (103c) for adhering and holding a pair of external connection terminals (114) constituting the pair of fixed contactors, and a side plate section (103d) extending below from an outer peripheral part of the terminal holding plate section. The invention is configured so that the following are adhered together with an adhesive agent: a resin container in which the side opposite the terminal holding plate section is made an opening surface; and a metal barrel-shaped body (104) inserted into the side plate section of the resin container and having an opening lower end within which are furnished the pair of fixed contactors and the movable contactor.

Classes IPC  ?

• H01H 50/02 - Supports; Enveloppes; Capots
• H01H 1/66 - Contacts scellés dans une enveloppe à vide ou remplie de gaz, p.ex. contacts à lames magnétiques

Abrégé

In order to provide a power conversion device having a semiconductor switching element and capable of achieving both noise countermeasures and the suppression of switching surges, in the power conversion device, which is provided with a power conversion unit that outputs a voltage resulting from switching and converting by means of the semiconductor switching element a DC voltage supplied by means of a negative line and a positive line of a DC power source, a plurality of inter-line capacitors are connected in parallel between the positive line and the negative line, the plurality of inter-line capacitors have a capacitance that has a lower value the closer the position of connection to the power conversion unit, and the inter-line capacitor having the lowest capacitance value is set to a value greater than the capacitance between primary electrodes during imposition of DC voltage to the switching element used in the power conversion unit.

Classes IPC  ?

• H02M 1/14 - Dispositions de réduction des ondulations d'une entrée ou d'une sortie en courant continu
• H02M 3/28 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire
• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

In order to provide a power conversion device having a semiconductor switching element and capable of achieving both noise countermeasures and a suppression of switching surges, in the power conversion device, which is provided with a voltage conversion unit that outputs voltage resulting from switching and converting by means of the semiconductor switching element a DC voltage supplied by a negative line and a positive line of a DC power source, a snubber capacitor and an inter-line capacitor are connected in parallel between the positive line and negative line. The wiring inductance and the capacitance of the inter-line capacitor are set in a manner so as to decrease the noise peak resulting from resonance with which the switching element and snubber capacitor are involved.

Classes IPC  ?

• H02M 1/14 - Dispositions de réduction des ondulations d'une entrée ou d'une sortie en courant continu
• H02M 3/28 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire
• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande