A laminate manufacturing apparatus of the present disclosure comprises a die unit (10) that performs a stamping process using an upper die (11) and a lower die (12), a base (20) that has a ground-contact surface for a floor (FL) and supports the lower die (12), and a support unit (30) that supports, from below, a workpiece that has been stamped by the upper die (11) and the lower die (12). The lower end portion (301) of the support unit (30) is disposed on or higher than the ground-contact surface of the base (20), and lower than an upper surface (121) of the lower die (12).
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
B32B 37/10 - Procédés ou dispositifs pour la stratification, p.ex. par polymérisation ou par liaison à l'aide d'ultrasons caractérisés par la technique de pressage, p.ex. faisant usage de l'action directe du vide ou d'un fluide sous pression
B32B 39/00 - Agencement d'appareils ou d'installations, p.ex. systèmes modulaires pour la stratification
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
2.
LAMINATE MANUFACTURING METHOD AND MANUFACTURING SYSTEM
A laminate manufacturing method of the present disclosure comprises: a detection step for detecting, by means of a predetermined detection device (20), a defect portion (82) of a band-shaped material (81) to be processed that is fed from a to-be-processed material coil (80) that is in a wound state; a processing step for using a die (31) of a processing device (30) to perform punching on the material (81) to be processed being intermittently transferred; and a laminating/dispensing step for stacking punched-out pieces (85, 86) punched out by the processing step into a laminated state, and successively feeding laminates (91, 92), each comprising the plurality of punched-out pieces (85, 86) laminated together, from the processing device (30) onto predetermined transfer paths (71, 72). In the laminating/dispensing step, on the basis of the result of detection of the defect portion (82) in the detection step, if a laminate (91, 92) includes a punched-out piece (85, 86) having a defect portion (88), the thickness of the laminate (91, 92) is made different from that of the normal time when the punched-out piece (85, 86) having the defect portion (88) is not included.
A method for manufacturing a laminated iron core according to one aspect of the present disclosure comprises: a formation step for punching out a metal plate (MS) along a prescribed shape to form a plurality of block bodies (B); and a lamination step for laminating the plurality of block bodies (B) on a welding jig (70) that has a positioning member (80A) and a positioning member (80B) disposed at different positions in the circumferential direction around a prescribed axis (Ax). The positioning member (80A) regulates the position of a tooth section (4) of each of the plurality of block bodies (B) in the circumferential direction. The positioning member (80B) regulates the position of another tooth section (4) of each of the plurality of block bodies (B) in the circumferential direction. In the lamination step, the plurality of block bodies (B) are laminated on the welding jig (70) such that gaps (ga, gb) are provided between the tooth sections (4) and the positioning member (80A) and between the other tooth sections (4) and the positioning member (80B).
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
4.
MANUFACTURING METHOD FOR CORE OF ROTATING ELECTRIC MACHINE, CORE MANUFACTURING DEVICE, AND CORE
In the present invention, elastic bodies of an edge surface mask part and a radial direction mask part that form a mask mechanism (30) are brought into contact with an iron core body (11), openings in each direction of a slot (13) are blocked off, and the elastic body of the edge surface mask part and the elastic body of the radial direction mask part are brought into contact with each other, such that no gap that reaches the slot (13) is present between the elastic bodies. The surface of the iron core body (11) facing the slot (13) is partitioned from the outside together with the slot (13), and an electrodeposition coating introduced to the slot (13) is retained in the slot (13) and subjected to electrodeposition coating.
H02K 15/12 - Imprégnation, chauffage ou séchage des bobinages, des stators, des rotors ou des machines
H02K 1/04 - MACHINES DYNAMO-ÉLECTRIQUES - Détails du circuit magnétique caractérisés par le matériau employé pour l'isolation du circuit magnétique ou de parties de celui-ci
5.
METHOD FOR PRODUCING LAMINATED IRON CORE AND DEVICE FOR PRODUCING LAMINATED IRON CORE
A method for producing a laminated iron core (1) comprises: repeatedly inserting a blanking punch (P4) into a die that is provided with a blanking die hole to punch out a metal sheet (MS) in a prescribed shape using the punch (P4) and press the punched member toward a cylinder (142) positioned below the die, so as to laminate a plurality of punched members (W) that have been punched out from the metal sheet (MS) in the die and form a laminate (2); acquiring, using a sensor (SE), the separation distance between the punch (P4) and the cylinder (142) when the punch (P4) reaches the vicinity of the bottom dead center in the process of punching out the punched members (W) from the metal sheet (MS); and calculating, on the basis of the separation distance acquired by the sensor (SE), the lamination thickness of the plurality of punched members (W) that are laminated in the die.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
Provided is a laminated core (10) provided with: a laminate (10A) of electromagnetic steel plates (W); and, a granular oxide that contains magnetite and covers a side surface (20) of the laminate (10A), the contact angle of water droplets from when the water droplets are dripped onto the side surface (20) covered by the granular oxide to when 20 minutes have elapsed being 80° or greater. Provided is the laminated core (10), in which, when the peak heights for which 2θ is detected to be within the ranges of 41-42° and 38-39° by XRD measurement of the side surface (20) covered by the granular oxide are H1 and H2 respectively, H1/(H1+H2) is 0.8 or greater.
H01F 3/02 - Noyaux, culasses ou induits en feuilles
C21D 9/00 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet
C21D 9/46 - Traitement thermique, p.ex. recuit, durcissement, trempe ou revenu, adapté à des objets particuliers; Fours à cet effet pour tôles
C23C 8/18 - Oxydation de la couche superficielle de matériaux ferreux
H01F 27/245 - Noyaux magnétiques fabriqués à partir de tôles, p.ex. à grains orientés
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
7.
LAMINATED IRON CORE MANUFACTURING METHOD AND LAMINATED IRON CORE
In the provided laminate iron core manufacturing method, even in a state in which adhesive thin plates continuously produced by a press device are laminated together, is it possible to work with laminate iron core units and block iron core units. This laminate iron core manufacturing method obtains a laminate iron core (10) by integrating, by adhering together in a laminate state, multiple adhesive thin plates (17) made of a magnetic metal material that on at least one surface has an adhesive insulation film capable of expressing an adhesive function when heated and/or pressurized, wherein the laminate iron core manufacturing method involves a crimping step for forming a block iron core (12) linking together, by crimping, adhesive thin plates (17) of the same shape laminated together, and an adhesion step for integrating by adhesion the adhesive thin plates (17) upon laminating block iron cores (12) individually or multiply. The adhesive thin plates (17) are shaped such that crimping protrusions (18) and crimping holes (19) are arranged alternately in the circumferential direction, and in the crimping step, the adhesive thin plates (17) forming a block iron core (12) are linked to each other by the crimping protrusions (18) of the adhesive thin plates (17) being fitted into and crimped in the crimp holes (19) of the adjacent adhesive thin plates (17).
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/06 - MACHINES DYNAMO-ÉLECTRIQUES - Détails du circuit magnétique caractérisés par la configuration, la forme ou le genre de structure
8.
PROGRESSIVE-FEEDING MOLDING DEVICE AND METHOD FOR MANUFACTURING LAMINATED IRON CORE
This progressive-feeding molding device comprises: an upper mold and a lower mold; a lifter; and a pressing force member. The upper mold and the lower mold press a band-shaped metal plate that is progressively fed in a prescribed direction. The lifter is provided to the lower mold and lifts the metal plate when the metal plate is progressively fed. The pressing force member is provided to the upper mold and applies a pressing force to the metal plate from above, when the metal plate is lifted by the lifter.
B21D 43/09 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau au moyen de rouleaux par une ou plusieurs paires de rouleaux pour l'alimentation de matières en feuilles ou en bandes
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
B21D 43/04 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau
B30B 13/00 - Méthodes de pressage non liées à l'emploi des presses prévues dans l'un des groupes principaux
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
9.
MANUFACTURING METHOD FOR CORE OF ROTATING ELECTRIC MACHINE, CORE MANUFACTURING DEVICE, AND CORE
The present invention includes a delivery step in which resin is delivered to a space in a core body (11) positioned between molds. In the delivery step, a first resin having a fast solidifying speed is delivered so as to be interposed between the molds and a second resin located in the space, and the first resin is solidified first in a state in which the second resin having a slow solidification speed does not come in contact with the molds.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
10.
PROGRESSIVE PRESS DEVICE AND PROGRESSIVE PRESS METHOD
Provided is a progressive press device comprising an upper die and a lower die (120), the progressive press device at least die-cutting a sheet-form workpiece while sending the workpiece in a transport direction, wherein the lower die (120) has guide portions (124) that extend along the transport direction on both width-direction sides of the workpiece and that restrict width-direction movement of the workpiece, and holding portions (126a, 126b) that project inward in the width direction of the workpiece from at least one of the guide portions (124).
B21D 43/00 - Dispositifs d'alimentation, de positionnement ou de stockage combinés à des appareils pour travailler ou traiter les tôles, tubes ou profilés, disposés dans ces appareils ou spécialement adaptés pour être utilisés en association avec ces appareils; Association de dispositifs de coupe avec ces appareils
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
B30B 13/00 - Méthodes de pressage non liées à l'emploi des presses prévues dans l'un des groupes principaux
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
11.
LAMINATED IRON CORE PRODUCTION DEVICE, LAMINATED IRON CORE, AND LAMINATED IRON CORE PRODUCTION METHOD
A laminated iron core production device that layers a plurality of punched members that have been punched from a plate-shaped member (MS). The laminated iron core production device has a transport means that transports the plate-shaped member (MS), lifters (146) that support the plate-shaped member (MS) as transported by the transport means, a liquid material supply unit (143) that deposits a liquid material on an area of one principal surface of the plate-shaped member (MS) as transported by the transport means that is to become a punched member, and a punching unit (D42) that, after the liquid material has been deposited, punches the plate-shaped member (MS) and forms a punched member. The liquid material supply unit (143) deposits the liquid material on the plate-shaped member (MS) so as to avoid contact areas (S1–S4) that, of the area of the plate-shaped member (MS) that is to become a punched member, are areas at which the plate-shaped member (MS) is in contact with lifters (146) that are downstream of where the liquid material supply unit (143) is to deposit the liquid material and upstream of the punching unit (D42).
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
12.
SPLIT-TYPE LAMINATED IRON CORE, AND METHOD FOR MANUFACTURING SPLIT-TYPE LAMINATED IRON CORE
This split-type laminated iron core (1) is configured by a plurality of metal plate members having an annular shape being laminated. The metal plate members include first split pieces (W2a) and second split pieces (W2a) that are aligned in the circumferential direction of the metal plate members and that are divided by prescribed cutting lines (CL1, CL2). The first split pieces (W2a) and the second split pieces (W2a) are temporarily connected via the cut lines (CL1, CL2), which are configured from the boundary between the first end surface of each first split piece (W2a) and the second end surface of each second split piece (W2a), so that the shear surface formed at the first end surface and the shear surface formed at the second end surface abut each other and so that the first end surface and the second end surface do not completely overlap.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
13.
METHOD FOR MANUFACTURING SEGMENTED LAMINATED CORE, AND SEGMENTED LAMINATED CORE
This method for manufacturing a segmented laminated core (1) comprises: advancing a punch (P2A) toward a die hole (D2a) provided in a die (D2A) and partially pressing a metal sheet (MS) into the die hole (D2a) with the punch (P2A) so as to perform cut-and-bend processing on a prescribed portion of the metal sheet (MS) along a prescribed cutting line, thereby forming a cut-and-bent piece (MSa) which includes a first end face and a base material part (MSb) which includes a second end face corresponding to the first end face; performing push-back processing on the cut-and-bent piece (MSa) with respect to the base material part (MSb), thereby temporarily connecting the cut-and-bent piece (MSa) and the base material part (MSb), with a cutting line therebetween which is constituted by the border between the first end face and the second end face; performing punching on the metal sheet (MS) so as to include said portion, thereby forming a plurality of ring-shaped metal sheet members; and laminating the plurality of metal sheet members to produce a laminated body. In a view from the direction of advancement of the punch (P2A), at least part of the outer shape of the punch (P2A) which corresponds to the cutting line is positioned outward of the outline of the die hole (D2a).
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
This core portion of a rotating electrical machine includes, at least, an iron core main body formed by stacking a plurality of block iron cores (12) in which a plurality of thin plates (11a) made from a magnetic metal material are stacked and connected to one another, wherein: the iron core main body is provided with an annular yoke portion and a plurality of tooth portions (11c) projecting from the yoke portion; resin insulating portions joined to each side surface of the yoke portion and the tooth portions (11c) facing slots (13) created between the yoke portion and the adjacent tooth portions (11c) of the iron core main body are provided in the slots (13); and the insulating portions are disposed in such a way as to fill all recessed parts on at least one of the block iron cores (12) and the thin plates (11a) on each side surface of the tooth portions (11c).
H02K 3/34 - Enroulements caractérisés par la configuration, la forme ou la réalisation de l'isolement entre conducteurs ou entre conducteur et noyau, p.ex. isolement d'encoches
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 15/12 - Imprégnation, chauffage ou séchage des bobinages, des stators, des rotors ou des machines
H02K 1/04 - MACHINES DYNAMO-ÉLECTRIQUES - Détails du circuit magnétique caractérisés par le matériau employé pour l'isolation du circuit magnétique ou de parties de celui-ci
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
15.
METHOD FOR PRODUCING IRON CORE PRODUCT AND APPARATUS FOR PRODUCING IRON CORE PRODUCT
The present disclosure describes: a method for producing an iron core product, said method being capable of adequately supplying molten resins to a plurality of resin formation regions of an iron core main body; and an apparatus for producing an iron core product. One example of this method for producing an iron core product may comprise: a process wherein resin materials are respectively fed to a plurality of first container parts at generally same time, said first container parts being formed in a heating part; a process wherein heating of the plurality of resin materials arranged in the plurality of first container parts is started at generally same time by means of the heating part; and a process wherein molten resins are supplied to a plurality of resin formation regions of an iron core main body from the plurality of first container parts.
This method for manufacturing a laminated core (1) has a step of welding, in a state in which a laminated body (10) in which a plurality of metal sheets are laminated is sandwiched from both sides in the lamination direction by a pair of welding jigs (250a, 250b), a welding portion (20) extending in the lamination direction in the surface of the laminated body (10). At least one of the pair of welding jigs (250a, 250b) has a welding holding portion (260) having an outline corresponding to the welding portion (20) of the laminated body (10) in plan view and is stacked with respect to the laminated body (10) in a state in which the welding holding portion (260) overlaps with the welding portion (20) in plan view.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
The present disclosure explains a metal product manufacturing method and a metal product manufacturing device that allow improvement of yield while generation of defective products is suppressed. This metal product manufacturing method comprises: engaging a regulation member with a positioning part included in a leading end of a band-like metal plate; grasping the metal plate by means of a carrying mechanism in a state in which the regulation member and the positioning part are engaged with each other; and carrying the metal plate grasped by the carrying mechanism toward the downstream side.
B21D 43/00 - Dispositifs d'alimentation, de positionnement ou de stockage combinés à des appareils pour travailler ou traiter les tôles, tubes ou profilés, disposés dans ces appareils ou spécialement adaptés pour être utilisés en association avec ces appareils; Association de dispositifs de coupe avec ces appareils
B21D 43/04 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau
The present disclosure describes a method for manufacturing a laminated iron core in which oil attached to a laminate can be efficiently removed. This method for manufacturing a laminated iron core includes: laminating a plurality of blanked members (W) to form a laminate (10); pre-pressing the laminate (10) so that oil interposed between the plurality of blanked members (W) is pushed out to the outer peripheral surface or the inner peripheral surface of laminate (10); and removing the pushed-out oil.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
19.
APPARATUS FOR MANUFACTURING LAMINATED CORE AND METHOD OF MANUFACTURING LAMINATED CORE
A manufacturing apparatus (50) comprises: a plurality of sites including a separation site (51) for separating electrical steel sheets (10) from a temporary laminate (11a) which comprises a plurality of the electrical steel sheets 10 that are temporarily laminated, an adhesive application site (53) for applying an adhesive (20) to the electrical steel sheets (10) as a first coating agent for adhesion, and a lamination site (59) for laminating the electrical steel sheets (10) to which the adhesive (20) has been applied; and a conveyance device (60) that conveys the electrical steel sheets (10) between the plurality of sites. The conveyance device (60) includes a conveying body (71) that holds the electrical steel sheets (10) and a conveyance drive unit (72) that conveys the conveying body (71) along a circulation route (R) that passes through at least the separation site (51) and the adhesive application site (53).
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
H01F 27/245 - Noyaux magnétiques fabriqués à partir de tôles, p.ex. à grains orientés
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
A method for manufacturing a laminate (1A) includes: forming the laminate (1A) by laminating electromagnetic steel sheets (4); annealing the laminate (1A); acquiring pre-annealing lamination thickness information relating to the thickness of the laminate (1A) before annealing the laminate (1A); and adjusting the lamination conditions of the electromagnetic steel sheets (4) so that the pre-annealing lamination thickness information satisfies pre-annealing standards set in advance, if the pre-annealing lamination thickness information does not satisfy the pre-annealing standards.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
21.
MANUFACTURING METHOD OF METAL PRODUCT AND METAL PRODUCT
This manufacturing method of a metal product (1) includes: forming a marking (14) by radiating a laser beam for marking on a surface (2b) of a metal member (2) and by scraping the surface (2); heat-treating the metal member (2) on which the marking (14) is formed; and forming a background (12) shallower than the marking (14) by radiating a laser beam for a background on a larger area than the marking (14) on the surface (2b) and by scraping the surface (2b).
B23K 26/00 - Travail par rayon laser, p.ex. soudage, découpage ou perçage
G06K 1/12 - Méthodes ou dispositions pour marquer les supports d'enregistrement sous la forme numérique autrement que par poinçonnage
G06K 19/06 - Supports d'enregistrement pour utilisation avec des machines et avec au moins une partie prévue pour supporter des marques numériques caractérisés par le genre de marque numérique, p.ex. forme, nature, code
G09F 7/14 - Caractéristiques structurelles des éléments portant ou formant les symboles
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
22.
METHOD FOR MANUFACTURING STACKED BODY, AND DEVICE FOR MANUFACTURING STACKED BODY
A method for manufacturing a stacked body (1A) includes: stacking a plurality of electrical steel plates (4) to form a stacked block (5), and overlaying a plurality of the stacked blocks (5) in a stacking direction (D1) of the electrical steel plates (4) to form one provisional stacked body (1B); forming a rotationally stacked stacked body (1C) in which at least one of the stacked blocks (5) in the provisional stacked body (1B) has been rotated relative to another about an axis in the stacking direction (D1); and adjusting the stacked number of electrical steel plates (4) in the formation of the stacked blocks (5) on the basis of thickness information relating to the thickness of the rotationally stacked stacked body (1C). Adjusting the stacked number on the basis of the thickness information includes acquiring pre-rotational stacking thickness information, which is the thickness information before the rotationally stacked stacked body (1C) has been formed, and, if the pre-rotational stacking thickness information is lower than a preset pre-rotational stacking lower limit, increasing the stacked number to make the thickness information equal to or greater than the pre-rotational stacking lower limit.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
B32B 15/01 - Produits stratifiés composés essentiellement de métal toutes les couches étant composées exclusivement de métal
B32B 37/16 - Procédés ou dispositifs pour la stratification, p.ex. par polymérisation ou par liaison à l'aide d'ultrasons caractérisés par les propriétés des couches toutes les couches existant et présentant une cohésion avant la stratification
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
The problem of the present disclosure is to provide a method for manufacturing iron core products that enables extremely efficient manufacturing of the iron core products. This method for manufacturing iron core products (1, 2) includes: heating iron core bodies (10, 20) attached to jigs (J) along with the jigs (J); removing the iron core bodies (10, 20) from the jigs (J) when the jigs (J) and the iron core bodies (10, 20) have been heated to a first temperature (T1); and after removing the iron core bodies (10, 20) from the jigs (J), separately cooling the iron core bodies (10, 20) and the jigs (J) so that the iron core bodies (10, 20) reach a second temperature (T3) which is lower than the first temperature (T1), and the jigs (J) reach a third temperature (T2) which is lower than the first temperature (T1).
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/22 - Parties tournantes du circuit magnétique
H02K 1/27 - Noyaux rotoriques à aimants permanents
24.
METHOD FOR MANUFACTURING IRON CORE PRODUCT, IRON CORE PRODUCT, AND METHOD FOR MANUFACTURING ROTOR
The present disclosure pertains to a method for manufacturing an iron core product, which is capable of maintaining a preferable state of a welding bead in an iron core body, the iron core product, and a method for manufacturing a rotor. This method for manufacturing the iron core product includes: injecting a molten resin into a resin injection part provided to the iron core body so as to extend in the height direction; and configuring the iron core product by welding the iron core body. Configuring the iron core body includes welding the iron core body such that the welding bead formed by means of welding will not reach a buffer region set between the welding bead and the resin injection part.
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
H02K 1/27 - Noyaux rotoriques à aimants permanents
The present invention addresses the issue of providing a production method for a laminated iron core, whereby, processing that follows fastening the laminate by caulking can be performed well. This production method for a laminated iron core (1) includes: laminating a plurality of punched-out members (W) and forming a laminate (10), said laminate (10) including a pair of first and second end surfaces (S2, S1), said plurality of punched-out members (W) being fastened by caulking (20) in the lamination direction of the laminate (10), and said laminate being formed such that the caulking (20) protrusion (20b) from the first end surface (S2) in a downward facing state protrudes downwards; placement of the laminate (10) on support bodies (401, 510) such that the protrusion (20b) is not in contact with the support surface of the support bodies (401, 510); and processing of the laminate (10) in a state in which the laminate (10) is arranged on the support bodies (401, 510).
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/22 - Parties tournantes du circuit magnétique
The present invention addresses the issue of providing a production method for a laminated iron core, whereby, after a laminate has been obtained, subsequent machining can be performed well. This production method for a laminate iron core (1) includes: laminating a plurality of punched-out members (W) and forming a temporary laminate (11); pressurizing the temporary laminate (11) by using a first load (P1) and obtaining a laminate (10); and pressurizing the laminate (10) using a second load (P3) that is no more than the first load (P1) and machining the laminate (10).
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/22 - Parties tournantes du circuit magnétique
27.
LAYERED IRON CORE AND METHOD FOR MANUFACTURING SAME
The present disclosure explains a layered iron core and a method for manufacturing the same in which punching members that are adjacent in the height direction are properly fastened together by crimping parts, thereby improving accuracy. A rotor layered iron core comprises a layered body in which a plurality of punching members provided with at least one first crimp and at least one second crimp are layered. In the center of the layered body, among the punching members adjacent in the height direction and provided with center holes extending through the layered body along the height direction of the layered body, corresponding first crimps are coupled to each other and corresponding second crimps are coupled to each other. The second crimps are positioned closer to the outer peripheral edge of the punching members than the first crimps. The fastening force of the second crimps is less than the fastening force of the first crimps.
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
28.
LEAD FRAME, METHOD FOR MANUFACTURING LEAD FRAME, AND METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE
In the present invention, mold resin remaining in a mold runner is easily separated from a lead frame. A lead frame has an obverse surface on which a semiconductor chip is mounted, and a reverse surface on the opposite side from the obverse surface, a plurality of unit lead frames including die pads and a plurality of leads being provided so as to be aligned. The reverse surface includes a first area in which the unit lead frames are provided, and a second area which is the area other than the first area. The first area has lower surface roughness than does the obverse surface, and the second area has lower surface roughness than does the first area.
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
H01L 23/28 - Capsulations, p.ex. couches de capsulation, revêtements
The present disclosure addresses the problem of providing a rotor core manufacturing method capable of efficiently producing a rotor core excellent in weight balance. The rotor core manufacturing method includes: individually obtaining the weights of a plurality of permanent magnets; obtaining first to N-th (N is a natural number of 2 or more) magnet sets in such a way that relatively heavy permanent magnets and relatively light permanent magnets among the plurality of permanent magnets are combined with each other at least one by one on the basis of the obtained individual weights of the permanent magnets, thereby forming one set of magnets; preparing a core body formed so as to rotate about a predetermined rotational axis and having first to N-th attachment portions arranged in the circumferential direction of the rotational axis; and attaching the first to N-th magnet sets to arbitrary attachment portions among the first to N-th attachment portions one by one.
H02K 15/16 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques Équilibrage des rotors
H02K 1/22 - Parties tournantes du circuit magnétique
H02K 1/27 - Noyaux rotoriques à aimants permanents
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
A tool 100 is provided with: a first component 110 that holds a laminate; and a second component 120 that supports the first component 110, wherein the second component 120 has an arrangement surface 121a on which a plurality of the first components 110 can be disposed side by side, and a plurality of positioning holes (through-holes 121b) forming openings in the arrangement surface 121a, and the first component 110 has a plate 111 that supports the laminate, a holding part 112 that holds the laminate supported by the plate 111 from the outer peripheral side; and a projected part 113 that projects downward from the plate 111 and is inserted into one of the positioning holes of the second component 120.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
31.
METHOD FOR MANUFACTURING METAL PRODUCT, AND METAL PRODUCT
The present disclosure describes a method for manufacturing a metal product, and a metal product, with which it is possible to improve the ease with which an identification code can be read. A method for manufacturing a rotor laminated iron core 1 includes: scanning a base area laser beam in a prescribed first direction while radiating the base area laser beam onto a surface 2b of a laminated body 2, and repeating said scanning operation for a plurality of rows to form a base region 12 on the surface 2b of the laminated body 2; and scanning a marking laser beam in a prescribed second direction while radiating the marking laser beam onto the surface 2b of the laminated body 2, and repeating said scanning operation for a plurality of rows to form a black marking 14 resulting from oxidation of the surface 2b of the laminated body 2. The second direction is different from the first direction. An identification code 10 having a prescribed pattern is constituted by a combination of the base region 12 and the black marking 14.
A stator laminated iron core manufacturing method includes: a first step of obtaining a laminated body that is configured by laminating a plurality of iron core members and includes an annular yoke portion and a plurality of tooth portions extending from the yoke portion in an intersectional direction intersecting with the yoke portion; a second step of inserting a core member into a slot that is the space between tooth portions adjacent in the circumferential direction of the yoke portion among the plurality of tooth portions; and a third step of filling a molten resin into the filling space between the slot and the core member to form a resin portion. In the second step, the body portion of the core member extends along the extending direction of the slot and is apart from the inner wall surface of the slot, and a closing portion of the core member, which is connected to the body portion, is positioned on the slot opening side of the slot and closes an opening end portion of the slot on the slot opening side.
H02K 15/12 - Imprégnation, chauffage ou séchage des bobinages, des stators, des rotors ou des machines
H02K 3/34 - Enroulements caractérisés par la configuration, la forme ou la réalisation de l'isolement entre conducteurs ou entre conducteur et noyau, p.ex. isolement d'encoches
Provided is an annular core piece capable of being housed inside the outline of the outer circumference of an annular core piece and having a small number of recess portions formed in the outer circumference. The annular core piece (1) is provided with a plurality of recess portions (5) opening in an outer circumference portion, wherein said recess portions (5) have a narrowed portion (11) and a raised portion (8). The width W of the narrowed portion (11) is narrowed in comparison with the width of other region lying further on the bottom side of the recess portions (5) than the narrowed portion (11). The raised portion (8) is formed such that a part of the bottom surface of the recess portions (5) is raised and projects toward an opening end (6) of the recess portions (5).
A method for manufacturing a laminated iron core, including: a first step for forming a first pilot hole in a strip-shaped metal plate using a first punch; a second step for machining, in a state in which a first pilot pin has been inserted through the first pilot hole and the metal plate has been positioned, a prescribed portion of the metal plate using a second punch, and a machined portion of the metal plate machined by the second punch is press-fitted into the metal plate; a third step for forming a second pilot hole in the metal plate using a third punch after the second step and prior to the metal plate being further machined; and after the third step, a fourth step for punching out a region including the machined portion using a fourth punch and forming a first punched member, in a state in which a second pilot pin has been inserted through the second pilot hole and the metal plate has been positioned.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
B21D 28/24 - Perforation, c. à d. découpage de trous
B21D 43/00 - Dispositifs d'alimentation, de positionnement ou de stockage combinés à des appareils pour travailler ou traiter les tôles, tubes ou profilés, disposés dans ces appareils ou spécialement adaptés pour être utilisés en association avec ces appareils; Association de dispositifs de coupe avec ces appareils
B21D 43/04 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau
B21D 43/06 - Avancement du matériau en fonction du mouvement de la matrice ou de l'outil au moyen d'un élément mécanique coopérant avec le matériau au moyen de pièces de liaison mâles ou femelles s'engageant dans des parties correspondantes de la tôle ou de la pièce analogue à travailler, p.ex. au moyen de boulons de support ou de section rainurée dans les supports
H02K 1/16 - Noyaux statoriques à encoches pour enroulements
H02K 1/22 - Parties tournantes du circuit magnétique
35.
LAMINATED CORE MANUFACTURING METHOD AND LAMINATED CORE MANUFACTURING DEVICE
A laminated core manufacturing method includes: a provisional laminating step for forming a core member by punching out a metal sheet along a predetermined shape in a die, said core member being one punched-out member or a block body in which the plurality of punched-out members are joined to each other, and of forming a laminated body by laminating a plurality of said core members; and a main laminating step for taking out the core members one by one from the laminated body and laminating the core members while supplying an adhesive to the individual core members so that the adhesive is positioned between the adjacent core members.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
H02K 1/16 - Noyaux statoriques à encoches pour enroulements
[Problem] To provide a semiconductor device with which parasitic inductance can be reduced and the heat dissipation effect can be increased by adopting a structure in which switching elements are not adjacent to each other in the stacking direction, when a high-side switching element and a diode element and a low-side switching element and a diode element are formed in a stacked structure. [Solution] A semiconductor device equipped with a high-side switching element SW1, a diode D1 connected in parallel to the switching element SW1, a low-side switching element SW2 connected in series to the switching element SW1, and a diode D2 connected in parallel to the switching element SW2, wherein the switching element SW1 and the diode D1 are stacked adjacent to each other in the vertical direction of the respective electrode surfaces of a conductive electrode E interposed therebetween, the switching element SW2 and the diode D2 are stacked adjacent to each other in the vertical direction of the respective electrode surfaces of a conductive electrode E interposed therebetween, and the switching element SW1 and the switching element SW2 are not adjacent to each other in the vertical direction of the respective electrode surfaces.
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
H01L 25/07 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
H01L 25/18 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant de types prévus dans plusieurs sous-groupes différents du même groupe principal des groupes , ou dans une seule sous-classe de ,
Provided is a method for manufacturing a core piece that enables manufacturing of a core piece or a member belonging to a core piece that is sufficiently flat for practical use. This method for manufacturing a core piece, wherein core pieces are manufactured by punching a plurality of members from a single sheet of a material 1, has: a lancing step wherein a boundary line 4 is formed between one stator core piece 2a and another stator core piece 2b adjacent to the stator core piece 2a; and a reverse bending step wherein, after the lancing step, the stator core piece 2b is bent in the direction opposite the direction in which it was bent in the lancing step, thereby providing a bend in the reverse direction in the stator core piece 2b.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
38.
PROCESSING DEVICE FOR THIN PLATE MATERIAL AND PROCESSING METHOD FOR SAME
The purpose of the present invention is to provide a processing device for thin plate material that can perform stable punch processing without reducing productivity, and a processing method for the same. Provided are a processing device (10) for thin plate material having an upper mold (12) provided with a punch (11), a lower mold (60) provided with a die (61), and a stripper plate (15) that can be raised and lowered with the upper mold (12), pushes the thin plate material (13) against the lower mold (60) during punch processing, and guides a tip part of the punch (11) into a die hole (62), and a processing method for the same, wherein pilot pins (21) passing through the stripper plate (15) are inserted into pilot holes formed in a region other than both end parts in the direction of width of the thin plate material and the thin plate material is positioned and punched, after which when the stripper plate (15) is pulled and separated from the thin plate material, the pilot pins (21) are pulled out of the pilot holes while making pressing members (27) provided at the peripheral parts of the pilot pins (21) protrude from the stripper plate (15) and press on the surface of the thin plate material.
A stamping unit comprises a punch (A9), a die (D9), and a guide part (170). The guide part (170) has an upper member (171) that is placed so as to face a side edge part of the upper main surface of an electrical steel, and a lower member (172) that includes a facing surface (Fu2), which faces the lower main surface of the electrical steel. The lower member (172) includes an overlapping part (OV1) that overlaps with the upper member (171) when viewed from the vertical direction, and a non-overlapping part (OV2) that does not overlap with the upper member (171) when viewed from the vertical direction and projects further on the central part side in the width direction of the electrical steel, relative to the upper member (171). At least some of the facing surface (Fu2) in the non-overlapping part (OV2) is positioned higher than the facing surface (Fu2) in the overlapping part (OV1).
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
B21D 43/00 - Dispositifs d'alimentation, de positionnement ou de stockage combinés à des appareils pour travailler ou traiter les tôles, tubes ou profilés, disposés dans ces appareils ou spécialement adaptés pour être utilisés en association avec ces appareils; Association de dispositifs de coupe avec ces appareils
Provided is a lead frame that suppresses bending. This lead frame is rectangular and comprises a plurality of unit lead frames, a plurality of first connecting bars, and a plurality of second connecting bars. The unit lead frames have die pads and a plurality of leads. The first connecting bars connect neighboring unit lead frames together and extend in the long direction of the lead frame. The second connecting bars connect neighboring unit lead frames together and extend in the short direction of the lead frame. At least some of the plurality of second connecting bars have portions that are more rigid than the first connecting bars.
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
41.
LAMINATED IRON CORE AND METHOD FOR MANUFACTURING SAME
A laminated iron core (10) formed by laminating a plurality of iron core pieces (11), wherein: a connecting recessed part (19) is provided to the inner peripheral part and/or the outer peripheral part of each of the iron core pieces (11), a connecting part (21) of a crimping piece (20) that can be attached and removed in the radial direction being connected to the connecting recessed part (19); the outer peripheral edge of the connecting part (21) has the same shape as the inner peripheral edge of the connecting recessed part (19); and the bottom part (28) of the connecting recessed part (19) is not configured in a single straight line.
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
42.
ELECTRODE CONNECTION STRUCTURE, LEAD FRAME AND METHOD FOR FORMING ELECTRODE CONNECTION STRUCTURE
[Problem] To provide: an electrode connection structure which connects, by plating with high quality, electrode and lateral surfaces of a plurality of long leads in the longitudinal direction, said plurality of long leads being arranged in parallel; and the like. [Solution] An electrode connection structure which connects, by plating, an electrode of a semiconductor chip 12 and/or a substrate electrode with a plurality of long leads 11 of a lead frame 10, and wherein: the plurality of long leads 11 of the lead frame 10 are arranged in parallel; a lateral surface of each lead 11 in the longitudinal direction is connected to the electrode of the semiconductor chip 12 and/or the substrate electrode by plating; and at the connection part of a first connection surface 13 of the electrode of the semiconductor chip 12 and/or the substrate electrode, said first connection surface 13 being connected to each lead 11, and a second connection surface 14 in the lateral surface of each lead 11 in the longitudinal direction, said second connection surface 14 being connected to the first connection surface 13, the distance between the first connection surface 13 and the second connection surface 14 is continuously increased from an edge part 15 of the second connection surface 14, which is in contact with the first connection surface 13, toward an outer part 16 of the second connection surface 14.
H01L 21/60 - Fixation des fils de connexion ou d'autres pièces conductrices, devant servir à conduire le courant vers le ou hors du dispositif pendant son fonctionnement
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
Crimping groups (13) having a plurality of crimping parts (14, 15) of different orientation are formed on a plurality of thin plates (10) that are disposed in an overlapping manner. After the positions of the overlapped thin plates (10) are fixed, a preset punching process is carried out on the thin plates (10), which are registered using pilot holes (12). This prevents misalignment of the overlapping plurality of thin plates (10) when the punching process is carried out on the thin plates (10), thereby making it possible to perform a high-accuracy punching process without the periphery of the pilot holes (12) being deformed due to pilot pins (11).
Provided are a lead frame and a method for manufacturing the same which improve the productivity of a good quality semiconductor device and make it economically possible to manufacture a high-quality semiconductor device by inhibiting occurrence of cutting burrs resulting from dicing and abrasion of a rotating blade while preventing deformation of a connecting bar. A lead frame 10 including a plurality of unit lead frames 12 vertically, horizontally, or vertically and horizontally adjacent to one another, and a method for manufacturing the lead frame, are provided. The unit lead frames 12 each include an element mounting part, leads 11 each having terminal portions 14 and 15, and a connecting bar 13. The lead 11 is disposed around the element mounting part. The leads 11 of the adjacent unit lead frames 12 are connected to each other via the connecting bar 13. In a main body 13a of the connecting bar 13, first reinforcing parts 16 which are each connected to a connection-side end portion 18 of the corresponding lead 11, and second reinforcing parts 17 which connect the first reinforcing parts 16 located next to each other in the longitudinal direction of the connecting bar and which are narrower than the connecting bar main body 13a, are integrally provided. Each first reinforcing part 16 has a recessed part 21 depressed in the thickness direction thereof.
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
The die device 10 has a stripper holder 19 that is supported by multiple guide posts 15, which connect between an upper die 12 attached to a press slide plate 11 and a lower die 14 attached to a press bolster 13, and moves up and down in conjunction with the upper die 12, thereby guiding a punch 16 of the upper die 12 into a die hole 18 of a die 17 disposed on the lower die 14 . The guide post 15 has an upper guide post 29 that is fitted in an upper guide bush 27 of the upper die 12 via an upper ball retainer 28, thereby connecting the stripper holder 19 with the upper die 12. The upper guide post 29 is formed in a stepped shape wherein a post lower part 32 located on the stripper holder 19 side has a smaller diameter than a post upper part 31 located on the upper die 12 side.
A die device 10 having: an upper die 12 equipped with a bending punch 11; a lower die 15 equipped with a die 14 in which a die hole 13 mating with the bending punch 11 is formed; and a stripper plate 17 that moves up and down in conjunction with the upper die 12, thereby pressing a material to be punched 16 against the lower die 15 and guiding a tip portion of the bending punch 11 into the die hole 13 during punching. Mounted on the stripper plate 17 is an eccentric bush 8 that allows the tip portion of the bending punch 11 to penetrate therethrough and causes the axial center position of the tip portion of the bending punch 11 to be aligned with the axial center position of the die hole 13.
B21D 28/00 - Mise en forme par découpage à la presse; Perforation
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
B21D 28/34 - Outils à perforer; Supports de matrices
B21D 39/03 - Utilisation de procédés permettant d'assembler des objets ou des parties d'objets, p.ex. revêtement par des tôles, autrement que par placage; Dispositifs de mandrinage des tubes des tôles autrement que par pliage
47.
LEAD FRAME, LEAD FRAME PACKAGE, AND METHOD FOR MANUFACTURING SAME
Provided is a method for manufacturing a lead frame provided with a lead frame body and a plating film on the surface of the lead frame body. The manufacturing method has a plating step for disposing a first electrode connected to a polarity-inverted power source so as to face the first main surface of the lead frame body and disposing a second electrode connected to a pulse power source so as to face the second main surface on the opposite side to the first surface to perform a plating treatment, and forming a plating film on the first main surface, the second main surface, and the side surfaces of the lead frame body.
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
C25D 5/18 - Dépôt au moyen de courant modulé, pulsé ou inversé
C25D 7/00 - Dépôt électrochimique caractérisé par l'objet à revêtir
C25D 21/00 - Procédés pour l'entretien ou la conduite des cellules pour revêtement électrolytique
The present disclosure pertains to a method for manufacturing a laminated core. This method includes (A) a step in which a plate to be processed is supplied to a die; (B) a step in which a processed body is obtained by punching by means of the die, said processed body having an annular part, a plurality of magnet-accommodating regions aligned at prescribed intervals in the circumferential direction at the periphery of the annular part, and a main body portion serving as a magnetic flux passage; and a step (C) in which a plurality of the processed bodies are stacked and fastened to obtain a laminated core. The step (B) includes: a step (b-1) in which, among the magnet-accommodating regions, first-removal regions are formed; and a step (b-2) in which, among the magnet-accommodating regions, second-removal regions are formed.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
H02K 1/22 - Parties tournantes du circuit magnétique
H02K 1/27 - Noyaux rotoriques à aimants permanents
Provided is a separator production method allowing a separator of excellent quality to be produced accurately. In this production method for the separator 10, a metal thin-plate material 12 being transported is subjected to a stepwise forming process at an identical location thereon to form flow path grooves 11, the separator production method being performed by a plurality of press machines 23 to 25 having different processing shapes and disposed sequentially in the transport direction of the thin-plate material 12. The thin-plate material 12 is subjected to an annealing process between the press machine 23 and the press machine 24, and furthermore, between the press machine 24 and the press machine 25 which are next to one another in the transport direction of the thin-plate material 12.
Provided are: an armature the manufacture efficiency of which is improved; and a manufacturing method for the armature. In a cross section orthogonal to the central axis C of an annular core 2, a connection projection 22 and a connection recess 32 have shapes which are complementary to each other and become narrower as the distance from coupled surfaces 21, 31 increases. The connection projection 22 and the connection recess 32 have a pair of friction surfaces 23, 24 and a pair of friction surfaces 33, 34 extending in a direction away from the coupled surfaces 21, 31, respectively. The friction surface 23 of the connection projection 22 is inclined with respect to a virtual perpendicular line PL which is perpendicular to a line connecting the base portions of the pair of friction surfaces 23, 24 of the connection projection 22. The friction surface 33 of the connection recess 32 is inclined with respect to a virtual perpendicular line PL which is perpendicular to a line connecting the base portions of the pair of friction surfaces 33, 34 of the connection recess 32.
A laminated core 10 comprising a stator core formed by laminating core pieces 11 having a prescribed shape, with each core piece 11 being provided with a swaging block 12 capable of being removed in the radial direction. In addition, a method for manufacturing the laminated core 10 whereby each core piece 11 is provided with a swaging block 12 capable of being removed in the radial direction, and the core pieces 11 are laminated and joined by means of the swaging blocks 12 to arrange the core pieces on a jig 44, after which the swaging blocks 12 are extracted in the radial direction from the laminated core pieces 11 and thereby removed, and these laminated core pieces 11 are joined to each other with a resin 18.
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
The present invention comprises: a step for aligning and laminating enlarged core pieces (10) each provided with a core piece (11) and a dummy piece portion (13) to form a composite laminated core (18) integrally provided with a dummy laminated portion (21) obtained by laminating the dummy piece portions (13) and a laminated core (19); a step for mounting and positioning the composite laminated core (18) on a jig (23) and removing the dummy laminated portion (21); and a step for bonding the laminated core (main body) (19) after the dummy laminated portion (21) has been removed to thereby form the laminated core (19).
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
H02K 1/22 - Parties tournantes du circuit magnétique
The present invention provides a production method for a laminated iron core in which segment iron core pieces are laminated in a circular manner outside of a die used to produce said segment iron core pieces so that a reduction in device size is achieved and it is possible to improve pressing speed. The production method for a multilayer iron core comprises: a first step in which a segment iron core piece (14) having an arc angle achieved by dividing a circumferential angle of 360° into m sections is separated from a belt-shaped iron core material (13) and mounted on a mounting table (42), the segment iron core piece (14) is conveyed to the laminating position of a rotating laminating mechanism (35) using a pusher (49), and the rotating laminating mechanism (35) including the conveyed segment iron core piece (14) is rotated by 360°/m; and a second step in which the first step is repeated to form a joined annular iron core piece (12) in which the segment iron core pieces (14) are arranged in an annular shape. The second step is repeated to produce a swaged and laminated iron core (10) of a predetermined thickness. At the second step, the segment iron core pieces (14) are swaged and laminated within the rotating stacking mechanism (35).
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
B21D 28/22 - Entaillage de la périphérie des flans circulaires, p.ex. pour faire des lamelles de machines dynamo-électriques
A method of manufacturing a multilayer core of a rotor comprises: a first process wherein a multilayer core body (14) is positioned and mounted on a mounting platform (17) of a conveyance tray (16); a second process wherein the multilayer core body (14), which has a permanent magnet (15) inserted in each magnet insertion hole (11, 12) thereof, is positioned and arranged on a lower die (28) while mounted on the mounting platform (17), and is clamped between an upper die (29) and the lower die (28); and a third process wherein resin is pushed out from resin accumulation pots (42) provided on the lower die (28), and the resin is filled, via resin flow-paths (43) formed on the mounting platform (17), into each of the corresponding magnet insertion holes (11, 12) of the multilayer core body (14). With this method, the conveyance tray (16) does not need to be turned upside down, and working efficiency is greatly improved.
H02K 15/12 - Imprégnation, chauffage ou séchage des bobinages, des stators, des rotors ou des machines
H02K 1/27 - Noyaux rotoriques à aimants permanents
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
55.
METHOD FOR PRODUCING LAMINATED IRON CORE, AND SHAPE OF BLANKING SLAG GENERATED THEREBY
A method for producing a laminated iron core for production of a motor core by press blanking a thin strip material, wherein, before the blanking slag (10) of the iron core sheet (11) of the motor core is blanked out, the blanking slag (10) is partitioned into a plurality of areas (20) and a plurality of partition holes (15) are formed in the blanking slag (10), each partition hole being connected on one end to the peripheral edge (14) of the blanking slag (10) via a first narrow connecting section (17). Additionally, a central hole (12) is formed in the central portion of the blanking slag (10), connected to the partition holes (15) via second narrow connecting sections (18). Consequently, provided are a method for producing a laminated iron core which does not generate slag floating when blank laminating a thin strip iron core sheet (11), and a shape of blanking slag formed thereby.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
Provided is a processing device (10) for transporting a long plate-shaped body (12) from the upstream side to the downstream side and sequentially performing press processing including punching on the long plate-shaped body (12). The processing device (10) is provided with: a plurality of stages (a)-(l) provided along the direction of transportation of the long plate-shaped body (12), each of the stages being provided with a mold (11) for performing press processing on the long plate-shaped body (12); and a plurality of lifters (17, 18, 19, 20, 21) provided along the direction of transportation of the long plate-shaped body (12), the lifters having lift-up parts for lifting the long plate-shaped body (12) from the mold (11). The lifters (17, 18, 19, 20, 21) are configured so that the separation length (L) obtained by the lift-up parts (26) of the lifters (17, 18, 19, 20, 21) disposed on the downstream side is greater than the separation length (L) obtained by the lift-up parts (26) of the lifters (17, 18, 19, 20, 21) arranged on the upstream side.
B21D 43/00 - Dispositifs d'alimentation, de positionnement ou de stockage combinés à des appareils pour travailler ou traiter les tôles, tubes ou profilés, disposés dans ces appareils ou spécialement adaptés pour être utilisés en association avec ces appareils; Association de dispositifs de coupe avec ces appareils
B21D 28/02 - Découpage à l'emporte-pièce ou poinçonnage de flans ou d'objets, avec ou sans production de déchets; Entaillage
B30B 13/00 - Méthodes de pressage non liées à l'emploi des presses prévues dans l'un des groupes principaux
H01F 41/02 - Appareils ou procédés spécialement adaptés à la fabrication ou à l'assemblage des aimants, des inductances ou des transformateurs; Appareils ou procédés spécialement adaptés à la fabrication des matériaux caractérisés par leurs propriétés magnétiques pour la fabrication de noyaux, bobines ou aimants
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
57.
LAMINATED CORE MANUFACTURING METHOD AND MANUFACTURING DEVICE
A laminated core manufacturing method in which rotary lamination is performed wherein core pieces (20) manufactured by conveying a band-shaped material to be blanked (10) to a mold device and sequentially pressing the band-shaped material to be blanked are pulled out and drop to a blanking die (21) and the blanking die (21) is rotated by a predetermined degree each time. In said method, a positioning mechanism for the blanking die (21) provided with rotary lamination guide pins and rotary lamination guide holes (23-30) is provided inside both ends in the width direction of the band-shaped material to be blanked (10), and temporary holes (13-16) through which the rotary lamination guide pins are inserted are further provided in the band-shaped material to be blanked (10). Consequently, the mold device can be reduced in size.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
58.
LEAD FRAME, METHOD FOR MANUFACTURING LEAD FRAME AND SEMICONDUCTOR DEVICE USING SAME
Provided is a lead frame (10) whereby a die pad (11) can be easily exposed when the lead frame (10) is used for a semiconductor device (20). The lead frame (10) has a die pad (11) with an upper surface on which a semiconductor element (21) is mounted. The lead frame is used for the semiconductor device (20) with the exposed surface of the die pad (11) being exposed from a sealing resin (24). A downwardly-projecting first metal burr (15) is formed along the peripheral portion of the exposed surface of the die pad (11) and the tip of the first metal burr (15) is flat.
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
59.
METHOD OF MANUFACTURING MULTILAYER IRON CORE HAVING PERMANENT MAGNETS SEALED WITH RESIN
A method of manufacturing a multilayer iron core, comprising inserting permanent magnets (20, 21) into magnet insertion holes (13, 14) of a multilayer iron core body (10a) which comprises a stack of multiple iron core pieces (11) and includes said magnet insertion holes (13, 14), which are provided with opening parts (17, 18) open to an inner space (15) or to the outer side, and sealing the permanent magnets (20, 21) within the magnet insertion holes (13, 14) with resin while the opening parts (17, 18) are blocked by a blocking member (23), said method of manufacturing a multilayer iron core being characterized in that the blocking piece members (32) forming the blocking member (23) are connected temporarily to respective iron core pieces (11) and the blocking member (23) is removed while the multilayer iron core body (10a) is resin-sealed. Thus, without requiring special blocking members, magnet insertion holes (13, 14) that are provided with opening parts (17, 18) at portions thereof are blocked, and the permanent magnets (20, 21) are sealed with resin.
H02K 1/27 - Noyaux rotoriques à aimants permanents
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
60.
METHOD OF MANUFACTURING LAMINATED STATOR CORE AND LAMINATED STATOR CORE MANUFACTURED BY THE METHOD
A method of manufacturing a laminated stator core and a laminated stator core manufactured by the method, the method capable of forming a recess 21 over one or both of (a) a lateral portion of an ear piece C of the stator core sheet A to be formed adjacent to the stator core sheet B and (b) a peripheral portion of the annular yoke piece D continuing to the lateral portion, the peripheral portion beside the ear piece C; fitting one ear piece E of the stator core sheet B with a gap in the recess 21; and thereby improving a material yield when the stator core sheets 13 are formed from the strip material 14.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
The present invention provides a laminated iron core wherein the lamination strength of each of iron core pieces of the laminated iron core is ensured, and magnetic efficiency is good and has less loss, and a method for manufacturing the same. In a laminated iron core (10) having: a first caulking portion (14) that is formed on a region where the magnetic flux density is larger than other regions; and a second caulking portion (16) that is formed on the other region, the meshing area (A) of a recess portion (14a) and a projecting portion (14b) of the first caulking portion (14) of a divided iron core piece (12) adjacent to each other in the lamination direction is smaller than the meshing area (B) of a recess portion (16a) and a projecting portion (16b) of the second caulking portion (16) adjacent to each other in the lamination direction.
Provided is a method of manufacturing a laminated iron core, wherein a laminated iron core body (14), which has magnet pieces (15) inserted into magnet insertion holes (12, 13) thereof, is inserted between a forming mold (10) and a holding mold (11), molding resin (19) is filled-in from resin accumulation sections (16), and the magnet pieces (15) are fixed to the magnet insertion holes (12, 13). In this method of manufacturing a laminated iron core, a guiding member (18), which comprises resin flowing-paths (31) that are formed from the resin accumulation sections (16) towards the magnet insertion holes (12, 13), and which is provided, at the downstream-side of the resin flowing-paths (31), with gates (30) that are connected to the magnet insertion holes (12, 13), was arranged between the forming mold (10) and the laminated iron core body (14). With such a configuration, lead time of a production line can be shortened, without changing the forming mold even for different types of laminated iron-cores of rotors, that is, without preparing different types of forming molds.
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
H02K 1/27 - Noyaux rotoriques à aimants permanents
A method for producing laminated cores that includes inserting a permanent magnet (14) into each magnet insertion hole (12, 12a) in a laminated core (13), and then, while the laminated core (13) is sandwiched between an upper mold (15) and a lower mold (16), filling the magnet insertion holes (12, 12a) with a resin (18) from a resin-holding pot (17) provided in either the upper or lower mold and affixing the permanent magnets (14) therein, wherein: a dummy plate (19), positioned between the laminated core (13) and the mold (15) in which the resin-holding pot (17) is formed, has gate holes (35, 35a) that guide the resin (18) from the resin-holding pot (17) into the magnet insertion holes (12, 12a) and overlap with both a part of the magnet insertion holes (12, 12a) and the surface of the laminated core (13); and after the resin (18) is injected into the magnet insertion holes (12, 12a) via the gate holes (35, 35a) and hardened, the dummy plate (19) is removed from the laminated core (13), and the resin (18) protruding from the magnet insertion holes (12, 12a) is removed.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
H02K 1/22 - Parties tournantes du circuit magnétique
H02K 1/27 - Noyaux rotoriques à aimants permanents
64.
RESIN SEALING METHOD FOR PERMANENT MAGNET AND LAYERED IRON CORE MANUFACTURED BY METHOD CONCERNED
Provided is a method for performing resin sealing for permanent magnets (13) inserted in a plurality of magnet insertion portions (14) of a layered body which is formed by layering a plurality of iron core pieces (11) and in which the plurality of magnet insertion portions (14) are formed around a center shaft hole (12) and are communicated with inside space portions (16) through opening portions (15), the method having a first step of disposing a closing member (21) which is uprightly provided to at least one of a lower mold (20) and an upper mold (24) which close the magnet insertion portion (14) with the layered body sandwiched therebetween from both sides in a shaft direction and is inserted through the inside space portion (16), thereby closing the opening portion (15) from the inside space portion (16), and a second step of filling a resin (17) extruded from a resin stock portion (25) provided to at least one of the lower mold (20) and the upper mold (24) into the magnet insertion portion (14) in which the permanent magnet (13) is inserted and the opening portion (15) is closed with the closing member (21). As a result, a resin sealing method for a permanent magnet for fixing the permanent magnet (13) to the layered body with the resin without injecting resin into an originally unnecessary portion and a layered iron core (10) manufactured by the method are provided.
H02K 1/27 - Noyaux rotoriques à aimants permanents
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
A method for manufacturing a stacked rotor core (10) is performed in such a manner that a permanent magnet (15) is inserted in each magnet insertion section (13) of the core body (14) formed by stacking core pieces (11) and then the permanent magnet (15) is affixed by filling the magnet insertion section (13) with a resin (17) from a resin storage section (19) provided to molds for sandwiching and holding the core body. The method has: a first step for disposing divided dummy plates (21) between the core body (14) and a mold, the divided dummy plates (21) each covering one or more magnet insertion sections (13) and having resin pouring holes (28) communicating with the magnet insertion sections (13); a second step for pouring the resin (17) into the magnet insertion sections (13) from the resin storage section (19) through the resin pouring holes (28) provided in the divided dummy plates (21) and corresponding to the magnet insertion sections (13); and a third step for removing the divided dummy plates (21) together with an excess resin (34) after the resin (17) inserted in the magnet insertion sections (13) is hardened. In the method, the easiness of the resin sealing work is improved.
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
H02K 1/27 - Noyaux rotoriques à aimants permanents
66.
METHOD FOR MANUFACTURING ROTOR, AND MANUFACTURING DEVICE THEREFOR
Provided are a manufacturing device and a method for manufacturing a rotor which do not cause resin to leak during the resin sealing process, even if the surface of a rotor laminated iron core has some bumps caused by a caulk connecting section formed on the rotor laminated iron core. The device and method for manufacturing a rotor involve: forming a rotor laminated iron core (11) which is laminated and caulked with a plurality of iron core pieces (14) via a caulk connecting section (15); inserting a permanent magnet piece (13) into the magnet insertion hole (12) of the rotor laminated iron core (11); sandwiching the rotor laminated iron core (11) between an upper mold (17) and a lower mold (18); and filling the magnet insertion hole (12) with resin which is inserted from a resin filled pot (cull) (19) formed on the upper mold (17) or the lower mold (18). The magnet insertion hole (12) is sealed with resin by aligning the center of the caulk connecting section (15) with the center of the resin filled pot (19).
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/22 - Parties tournantes du circuit magnétique
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
Disclosed is a stator core (10) formed of a laminate of stator core pieces (17) formed by punching magnetic metal plates (32) from which rotor core pieces (36) located at the centers of the stator core pieces have been punched. Also disclosed is a method for manufacturing the stator core. Thin portions (24) are formed by pressing the magnetic pole segments (19) of each of the stator core pieces (17) from both sides of the magnetic pole segments in the thickness direction, and the magnetic pole segments (19) are drawn inward in the radial directions. This can prevent warpage of the magnetic pole segments (19), and can improve accuracy in swaging and the dimensional accuracy of the laminated core when the rotor core pieces (36) and the stator core pieces (17) are punched from the same plates.
Disclosed is a rotator core having an improved quality and an improved reliability thanks to prevention of core crack of the rotator core. The rotator core (10, 25) provided with a laminate of substantially cylindrical core blocks (12, 13, 26, 27, 28) and magnets (20) is characterized in that the core blocks (12, 13, 26, 27, 28) have magnet-accommodating holes (16, 17) extending in the axial direction to the core blocks (12, 13, 26, 27, 28), the magnets (20) are accommodated in the magnet-accommodating holes (16, 17) and secured with resin and that the axial position(s) of the core block boundary surface(s) (23, 30, 30a) along which the core blocks (12, 13, 26, 27, 28) are in contact with each other (one another) and the axial position(s) of the magnet boundary surface(s) (22, 31) along which the magnets (20) are in contact with each other (one another) are different.
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
H02K 1/22 - Parties tournantes du circuit magnétique
H02K 1/27 - Noyaux rotoriques à aimants permanents
69.
METHOD OF MANUFACTURING LAMINATED IRON CORE, AND LAMINATED IRON CORE
Provided is a method of manufacturing laminated iron core that clarifies the positions of the bordering sections between the laminated blocks, and improves the efficiency of the welding-tasks regarding the blocks. This is achieved by a method of manufacturing laminated iron core (10) that has a process of forming multiple blocks (12) having multiple welding sections (13 through 15) with different shapes or colors for each of the prescribed angles in the circumferential direction; a process of laminating the multiple blocks (12) at each of the rotated states after rotating a prescribed angle; and a process of unifying the multiple blocks (12), by mutually welding the welding sections (13 through 15), which have different shapes or colors, of the laminated blocks (12).
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
Provided is a laminated iron core (10) that will improve the yield of materials, and prevent cracks or ruptures from being produced on iron core pieces, by easing the stress to be generated on coupling sections (13). Coupled divided-iron-core-pieces (14) to be used in assembling the laminated iron core (10) has, on the inner side in the radius direction of the coupling sections (13), V-shaped slots (17) with an opening angle of 360/n, assuming the number of divided-iron-core-pieces (19) to be n, and which open towards the inner side in the radius direction; and also has, on the outer side in the radius direction of the coupling sections (13), separating sections (18) that separate mutually-adjacent, divided yoke-piece sections (12), which are located more on the outer side in the radius direction than the coupling sections (13). Furthermore, first through holes (20) having circular-arcs are formed on the end sections at the outer side in the radius direction of the V-shaped slots (17), which are in contact with the coupling sections (13); and second through holes (20), having arcs with a radius of curvature greater than the circular-arcs of the first through holes (20), are formed on the end sections at the inner side in the radius direction of the separating sections (18), which are in contact with the coupling sections (13).
Disclosed is a lead frame for a semiconductor device (10), which comprises a plurality of terminals (13) having one end portion sealed with a resin. A portion (16) of each terminal (13), which is to be sealed with a resin, is composed of a pentagonal or higher polygonal prism, or an irregular prism having at least one notch or groove which is formed on the peripheral surface and extends in the vertical direction. The portion (16) to be sealed with a resin is formed by etching or pressing, and an exposed portion (18) serving as the lower half of each terminal (13) is formed by etching.
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
72.
SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SAME
A semiconductor device (10) has a terminal (14) which is electrically connected with a semiconductor element (11), and a sealing resin (15) which seals a part of the terminal (14) and the semiconductor element (11). On a bottom surface (17) of the terminal (14) partially protruding from the sealing resin (15), an electrolytic plating layer (19) composed of Ag, Sn or Ni is formed, and on the electrolytic plating layer, an electroless plating layer (22) composed of Ni, Sn, Ag, Ag/Au, Ni/Au, Ni/Ag, Ni/Pd/Au or Ni/Pd/Ag is formed. On a side surface (20) of the protruding terminal (14), an electroless plating layer (22) composed of the same material as that of the electroless plating layer (22) formed on the bottom surface (17) of the protruding terminal (14) is formed. Thus, a terminal side surface (standoff side surface) which is exposed when the terminal (14) is independently formed by etching a leadframe material (32) from the rear surface is prevented from being contaminated due to oxidation and the like, and furthermore, as a whole, manufacturing cost is reduced.
H01L 23/12 - Supports, p.ex. substrats isolants non amovibles
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
73.
METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE, SEMICONDUCTOR DEVICE, METHOD FOR MANUFACTURING INTERIM PRODUCT OF SEMICONDUCTOR DEVICE, INTERIM PRODUCT OF SEMICONDUCTOR DEVICE, AND LEAD FRAME
A semiconductor element (11), a columnar terminal (14) which is arranged around the semiconductor element (11) in an area array form, and a bonding wire (16) which electrically connects an electrode pad (15) of the semiconductor element (11) and a wire bonding portion (12) of the columnar terminal (14) are included. The semiconductor element (11), the bonding wire (16), and an upper half exposed portion of the columnar terminal (14) are sealed with a resin. A part of the each columnar terminal (14) is projected from a lower end of a sealing resin (17). The columnar terminal (14) is formed with a half etching from a front side and a back side. Gold plating, tin plating, tin alloy plating, or nickel plating (23) is applied to the upper surface of the each columnar terminal (14). Tin plating, tin alloy plating, or nickel plating (25) is applied to the lower surface of the each columnar terminal (14) projected from the sealing resin (17).
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
H01L 23/12 - Supports, p.ex. substrats isolants non amovibles
74.
LAMINATED STATOR CORE, AND MANUFACTURING METHOD THEREFOR
Provided is a laminated stator core (10), which uses the end portions (34) of band plate members (33) to form a plurality of iron core members (15 and 16) as a part of product and which performs rotation and stacking of the iron core members without cutting twice the end portions (34) of the band plate members (33), and a method for manufacturing the laminated stator core (10). The laminated stator core (10) uses the sides of the band plate members (33) made of a magnetic material, as they are, as the sides of the iron core members (15 and 16). These iron core members (15 and 16) of identical shape are formed into such a manner that the center (20) of a rotor space (14) centrally formed is offset in one direction with respect to the centers of the iron core members (15 and 16). The iron core members (15 and 16) thus formed are rotated and stacked in alignment with the center (20) of the rotor space (14), and are caulked and laminated.
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
Provided is a molding apparatus, which can prevent an insufficient punch or a damage of a punch/die due to the inclination or transverse movement of a press ram, in advance at a punching action time, which can prevent the damage of the punch due to the transverse movement or the inclination of a stripper plate in advance at the time other than the punching action, and which comprises a top force having the punch and a bottom force having the die so as to facilitate the maintenance such as the abutting adjustment between the punch and the stripper plate. The molding apparatus is constituted such that the top force attached to the press ram is connected movably back and forth to the bottom force through a die set guide so that a punched material pushed onto the bottom force by the stripper plate may be punched out by the forward and backward movements of the top force relative to the bottom force. The molding apparatus further comprises a guide rod, which is composed of a lower rod fixed on the stripper plate for guiding the punch, and adapted to engage with the bottom force, and an upper rod disposed removably on the stripper plate and adapted to engage with the top force. The molding apparatus is characterized in that the upper rod is removed from the stripper plate at the time of punching the punched material so that the top force and the stripper plate are brought into a disconnected state, thereby to move the stripper plate freely back and force relative to the bottom force by the lower rod, and in that the upper rod is attached to the stripper plate at the time other than that of punching the punched material so that the top force and the stripper plate are brought into a connected state by the upper rod, thereby to hold the stripper plate back with respect to the top force.
In a laminate core (10) having adjoining segment core pieces (13) coupled mutually by a coupling portion (12) formed on the outer circumferential portion (11) and formed by winding a plurality of continuous segment core pieces (13) spirally while matching the side ends (14) of the adjoining segment core pieces (13) by bending the coupling portion (12), a recess (19) for containing a radially swelling portion (18) formed on the radial outside when the coupling portion (12) is bent in the outside circle of the laminate core (10) is provided on the radial outside of the coupling portion (12), an inside cut (20) forming the bending position of the coupling portion (12) is provided on the radial inside of the coupling portion (12), radial width of the coupling portion (12) is formed narrow, and the radial width of the coupling portion (12) before bending is set in the range of 0.5-5 times of the thickness of the segment core pieces (13). Consequently, a laminate core (10) capable of producing a high quality product with high efficiency without being affected by swelling of the coupling portion (12) in the thickness direction is provided, and its manufacturing method is also provided.
A laminated iron core (10) and production of the same in which multiple iron segments (13) having bent connectors (12) at sidewise opposite ends on their outermost circular edges (11) thereof are pieced together successively in a spiral winding by means of their bent connectors in a relation coming into matching with companion segments (13) along their inside and outside circular edges while overlapping on top of the other with their bent connectors (12) in adjacently stacked winds being staggered circumferentially each other. On the radially outermost edge of the bent connector (12), there is made a cut (21) to keep a radially raised portion (20) of the connector (12) radially inside the outermost circular edge around the laminated iron core (10), the radially raised portion (20) being made when getting the connector (12) bent. On the radially innermost edge of the bent connector (12), there is made an inward cut (22) to define a location where the connector (12) gets bent. On the radially outside of the iron segment (13), moreover, there is provided a recess (16) that fits over a bulge (15) raised in thickness direction of the connector (12) when getting the connector (12) bent.
Provided is a laminated iron core (10), in which the connecting portions (12) of an outer circumference region (11) for connecting adjoining segment iron cores (13) are folded, in which the continuous segment iron cores (13) are spirally wound and laminated while being adjusted at their end portions, and in which the connecting portions (12) for the adjoining layers are arranged while being deviated in the circumferential direction. On the radially outer sides of the connecting portions (12), the laminated iron core (10) includes recessed notches (22) for housing radially bulging portions (21) formed on the radially outer side at the time of folding the connecting portions (12), within the outer circle of the laminated iron core (10). On the radially inner sides of the connecting portions (12), inside notches (23) for forming the folding positions of the connecting portions (12) are provided. On the radially outer sides of the segment iron cores (13) excepting the connecting portions (12), housing recesses (16 , 17) of bulging portions (15), which are formed in thickness direction thereof fronts and backs of the connecting portions (12) when these connecting portions (12) are folded, are provided at front and rear sides thereof.
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
79.
METHOD OF MANUFACTURING IRREGULARLY SHAPED LAMINATED CORE AND IRREGULARLY SHAPED LAMINATED CORE MANUFACTURED BY USING THE METHOD
A method of manufacturing an irregularly shaped laminated core has a step A of blanking a required quantity of multiple kinds of core pieces (12-14) out of a sheet (11) to be processed and then pushing them back into the sheet (11); a step B of forming cutouts (28, 30, 32) reaching the outer sides of externally identically shaped outer sheets (27, 29, 31) that include the core pieces (12-14), respectively, on their inner sides and having inner ends in contact with the core pieces (12-14),respectively; a step C of forming staking parts (21, 33) on the core pieces (12-14) and the outer sheets (27, 29, 31); a step D of blanking the outer sheets (27, 29, 31) out of the sheet (11), stacking and staking the core pieces (12-14) to form a irregularly shaped stacked core (10), and stacking and staking the outer sheets (27, 29, 31); and a step E of removing the outer sheets (27, 29, 31) stacked outside the irregularly shaped laminated core (10) formed by stacking and staking the core pieces. Consequently, the productively is considerably higher than before.
G01D 5/245 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensible; Moyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminé; Transducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques produisant des impulsions ou des trains d'impulsions utilisant un nombre variable d'impulsions dans un train
80.
ROTOR LAMINATED-CORE AND METHOD OF MANUFACTURING IT
A method of manufacturing a rotor laminated-core comprises a punching step of forming band-like core pieces (11, 12) by interconnecting arcuate segment core piece parts (15, 15a) having magnetic pole piece parts (13, 14, 13a, 14a) projecting radially outward through narrow connection parts (16, 16a) and a ring-shape forming step of bending the band-like core pieces at the connection parts (16, 16a) and wrapping and laminating them while vertically stacking the magnetic pole piece parts (13, 14, 13a, 14a). In the punching step, cutouts (23a, 23) where the bent connection parts (16, 16a) are positioned are formed radially outside the joining parts (22a, 22) of the magnetic pole piece parts (13a, 14a, 13, 14) of the segment core piece parts (15a, 15) positioned over and under the connection parts (16, 16a) bent at the ring-shape forming step.
H02K 1/30 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor utilisant des pièces intermédiaires, p.ex. des croisillons
H02K 1/28 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor
Provided is a laminated iron core, in which split laminated iron cores (10) having first and second connecting portions (19, 20) formed by alternately laminating predetermined numbers of split iron core members (21, 22) having edged recesses (24, 25) and edged protrusions (23, 26), respectively, are connected reliably and strongly in an annular shape through the first and second connecting portions (19, 20) to the two sides of individual split yoke members (27, 36). The two sides of magnetic pole center portions (12) of the split laminated iron cores (10) and the corners of the laminated lower portion and the laminated upper portion on the radially outer sides of magnetic pole tooth portions (13) are so rounded that wires to be applied to the magnetic pole center portions (12) may be kept undamaged.
A semiconductor device (10) is provided with a semiconductor element (12); a group of rear inner side terminals (14) which are connected to the semiconductor element (12) through bonding wires (13) and arranged in an area array by being exposed to the bottom surface inner side; a group of rear outer side terminals (15) which are arranged outside the group of the rear inner side terminals (14); a group of front outer side terminals (17) which are directly above the rear outer side terminals (15), exposed to the front surface and electrically connected to the rear outer side terminals (15) directly below through a connecting conductor (16); and a sealing resin (18) for sealing the semiconductor element (12), the bonding wires (13), each of the rear inner side terminals (14), each of the rear outer side terminals (15) and unexposed portion of each of the front outer side terminals (17). On each of the terminal surfaces of at least the rear inner side terminals (14), the rear outer side terminals (15) and the front outer side terminals (17), noble metal plating layers (19, 19b) are formed.
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
H01L 23/12 - Supports, p.ex. substrats isolants non amovibles
83.
ROTOR AND METHOD FOR MANUFACTURING THE SAME AND ELECTRIC VEHICLE
A rotor comprising a rotor core (131) secured to a rotary shaft (120) and having a hole (131A) for inserting a magnet, a magnet (132) inserted into the hole (131A), and a resin portion (133) injected into the hole (131A) for inserting a magnet. The rotor core (131) is constituted by laminating a plurality of magnetic steel plates (1310) in the axial direction. The magnetic steel plates (1310) includes magnetic steel plate (1312) having the hole (131A) for inserting a magnet and a hole (131B) for reducing the weight provided separately from the hole (131A), and magnetic steel plates (1311, 1313) located at at least one axial end of the rotor core (131) and having a portion covering the hole (131B) formed in the magnetic steel plate (1312).
H02K 1/27 - Noyaux rotoriques à aimants permanents
H02K 1/22 - Parties tournantes du circuit magnétique
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
A rotor has a rotor core (131) fixed to a rotating shaft and having circumferentially arranged holes (131A), magnets (132) individually inserted in the holes (131A), and fillings (133) placed in the holes (131A). Each filling (133) is placed into a hole (131A) from a gate (1330) facing the center in the width direction of each magnet (132) at an opening of the hole (131A).
It is possible to provide a rotor manufacturing method capable of reducing a rotor unbalance amount by controlling a magnet arrangement position in a rotor core and improving a work efficiency when fixing a magnet to the rotor core by using resin. A lower surface (20b) of a rotor core (20) is arranged in a lower mold (30). A magnet (22) is contained in each of magnet containing holes (21) formed in the rotor core (20) in such a manner that a predetermined space is assumed between an upper surface (20a) of the rotor core (20) and an upper surface of the magnet (22). An upper mold (35) is arranged on the upper surface (20a) of the rotor core (20). The upper mold (35) and the lower mold (30) apply a pressure to the rotor core (20) and a molten resin is supplied with pressure from an internal diameter side via the predetermined space into the plurality of magnet containing holes (21) from respective cylinder (36) arranged in the upper mold (35). Thus, the magnets (22) are molded by resin (41) while pressing the magnets (22) toward the outer diameter side of the magnet containing holes (21).
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
H02K 1/22 - Parties tournantes du circuit magnétique
H02K 1/27 - Noyaux rotoriques à aimants permanents
86.
METHOD OF RESIN SEALING PERMANENT MAGNETS IN LAMINATED ROTOR CORE
A method comprising: a first process of placing a laminated rotor core (13) in a preheating device (18) to preheat the laminated core (13); a second process of removing the preheated laminated core (13) from the preheating device (18) and disposing the laminated core (13) between upper and lower dies (14, 15) of a resin sealing apparatus (29); a third process of pressing the laminated core (13) by the upper and lower dies (14, 15) and liquefying resin material (17) in resin reservoir pots (16) by heating; and a fourth process of ejecting the liquefied resin material (17) from the pots (16) into the magnet insertion holes (12) by plungers (32) inserted and moving vertically in the pots (16) and thermally curing the resin material (17). The method improves efficiency of resin sealing the permanent magnets (11) in the laminated core (13).
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
87.
METHOD FOR MANUFACTURING LAMINATED LEAD FRAME AND LAMINATED LEAD FRAME
A method for manufacturing a laminated lead frame in which each lead frame unit plate to be laminated can be bonded surely with a relatively small load. A laminated lead frame is also provided. In the method for manufacturing a lead frame by laminating and bonding a plurality of lead frame unit plates (10, 12) subjected to predetermined shaping, a plurality of protrusions (12) are formed on one of the opposing surfaces of a pair of upper and lower lead frame unit plates (10, 11) and the opposing lead frame unit plates (11, 12) are bonded together through the protrusions (12).
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
A method of producing a rotor capable of positively fixing a magnet to a rotor core with resin and preventing the rotor core from being fractured, comprising the step of fixing a permanent magnet (11) to the rotor core (12) by injecting molten resin (13) into a slot (12s) to complete injection molding when the dimension between the end surface (12a) of the rotor core (12) and the end surface (11a) of the permanent magnet (11) is a core end surface-magnet interval δ, and the minimum dimension between the inner peripheral surface of the slot (12s), that allow resin (13) to completely fill a portion between the inner peripheral surface of the slot (12s) and the side surface of the permanent magnet (11) by an action of injecting molten resin (13) into the slot (12s) from a cylinder (23), and the side surface of the permanent magnet (11) is a minimum slot-magnet interval, with the condition that the core end surface-magnet interval δ is equal to or larger then the minimum slot-magnet interval.
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
89.
SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SAME
In a method for forming a semiconductor device (28), plating masks (38, 39) having a noble metal plating layer (35) on an uppermost layer are formed in a prescribed area on the front side or rear side of a lead frame material (10), the lead frame material (10) is successively etched by using the plating masks (38, 39) as resist masks, and an external connecting terminal section (22), which is electrically connected to a semiconductor element (18) arranged inside a sealing resin (21) and protrudes downward, is formed. On a lowermost layer of the plating masks (38, 39), plating (33) of a base metal or a noble metal having etching solution resistance is formed.
H01L 23/12 - Supports, p.ex. substrats isolants non amovibles
H01L 23/50 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes pour des dispositifs à circuit intégré
90.
METHOD OF RESIN SEALING PERMANENT MAGNETS IN LAMINATED ROTOR CORE
A laminated rotor core (36) wherein permanent magnets (47) are inserted in respective magnet insertion holes (46) is disposed between and pressed by an upper die (37) and a lower die (29) The upper die (37) has resin reservoir pots (50) provided above the laminated rotor core (36) and at positions corresponding to the respective magnet insertion holes (46).Raw resin material put in the resin reservoir pots (50) is heated by the upper die (37). Subsequently, the resin material in a liquefied state is ejected from the resin reservoir pots (50) by plungers (52) that are inserted and moves vertically in the resin reservoir pots (50) and is directly filled in the magnet insertion holes (46). Consequently, the respective magnet insertion holes (46) are filled with the resin material more evenly and highly reliable products can be supplied at low cost.
H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
A method for manufacturing a laminated core comprising a step of punching a metal plate to form a stripe yoke core piece having a shape like a linearly developed yoke of a laminated core and having a coupling recess at the peripheral edge corresponding to the inner circumference, a step of winding and laminating the stripe yoke core pieces spirally and caulking them to form a yoke laminate, a step of punching a metal plate to form a pole core piece having a coupling protrusion at the root end, a step of laminating a predetermined number of pole core pieces and caulking them to form a magnetic pole laminate, and a step of winding a wire on the magnetic pole laminate, then fitting the coupling protrusion in the coupling recess, and thus coupling the yoke laminate and the magnetic pole laminate.
H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
brevets
