A stator of a motor is provided with: a magnetic body stator core including an annular core back surrounding a central axis extending vertically, and a plurality of teeth extending in a radial direction from the core back; a resin insulator covering at least part of the teeth; and a coil comprising a conducting wire wound around the teeth with the insulator interposed therebetween. The stator core is divided into a plurality of regions in the axial direction by interposing a non-magnetic layer which is non-magnetic and electrically insulating.
The present invention comprises: a cylindrical frame having an opening formed on one axial side thereof; and a plurality of protrusions arranged side-by-side circumferentially on the inner peripheral surface of the frame. The protrusions protrude radially inward from the inner peripheral surface of the frame. Magnets are each disposed between adjacent protrusions. Elastic members are mounted between one and/or the other of the circumferential side surfaces of a magnet and protrusions while being elastically deformed, and are in contact with at least portions of the circumferential side surfaces of the magnet and with at least portions of the radial side surface of the magnet.
A motor is provided with a rotor, a stator, a resin casing for sealing at least an insulator and a winding of the stator, and a cover for covering the resin casing, wherein: the cover covers the resin casing of at least one of the outward of the insulator in the radial direction and one side of the insulator in the shaft direction; and a gap is at least partially provided between the cover and the resin casing in at least one of the outward of the insulator in the radial direction and one side of the insulator in the shaft direction.
This motor is provided with: a rotor; a stator; a resin casing that seals at least an insulator and a winding of the stator; a plurality of bearings that rotatably support a rotating shaft at positions separated from each other in the axial direction; and a cover that covers the resin casing. The stator is provided with a plurality of bearing housing members in which the plurality of bearings are housed. The bearing housing members and the cover are conductive members. The cover is directly or indirectly electrically conductive with each of the plurality of bearing housing members.
This motor is provided with: a rotor; a stator; a resin casing that seals at least an insulator and a winding of the stator; a plurality of bearings that rotatably support a rotating shaft at positions separated from each other in the axial direction; a cover that covers the outer circumferential surface of the resin casing; and a conductive member having conductivity. The stator is provided with a plurality of bearing housing members in which the plurality of bearings are housed, respectively. The conductive member is supported by the cover. The conductive member has, on one side thereof, a contact part that is in contact with the stator core, and on the other side thereof, a grounded part that is grounded, and the bearings and the conductive member are electrically insulated.
This motor is provided with: a rotor; a stator; a resin casing that seals at least an insulator and a winding of the stator; a plurality of bearings that rotatably support a rotating shaft; and a cover that covers the resin casing. The stator is provided with a plurality of bearing housing members in which the plurality of bearings are housed, respectively. The bearing housing members are each made electrically conductive by means of a conductive member. Each of the plurality of bearing housing members is electrically insulated from the cover. The cover is electrically insulated from the conductive member.
This motor is provided with a rotor capable of rotating about a center axis, and also with a stator facing the rotor in a radial direction. The stator is provided with: a stator core; an insulator for covering at least a part of the stator core; a plurality of coil sections formed by winding a conductive wire around the teeth of the stator core with the insulator therebetween; wiring connected electrically to the conductive wire and led out to the outside; and containing members between coils, the containing members each having a first containing section provided between adjacent coil sections. The first containing sections contain first connection sections where the conductive wire and the wiring are connected.
A pump device according to the present invention has: a pump part having a motor; and a control device. The control device has: a drive circuit unit that energizes the motor; a control unit that controls the drive circuit unit; and a fault detection unit. At least one of the pump part and the control device has a detection unit that detects a physical quantity related to the load on the motor. The fault detection unit has: a storage unit that stores information about the load on the motor during a normal operation; a comparison unit that compares information about the load on the motor based on the physical quantity detected by the detection unit with the information stored in the storage unit; and a discrimination unit that discriminates the presence or absence of a fault and the type thereof on the basis of a comparison result of the comparison unit.
This pump device has a pump unit having an electric motor, and a control device. The control device has a drive circuit unit that energizes the electric motor, and a control unit that controls the drive circuit unit. The pump unit and/or the control device has a detection unit that detects a physical quantity pertaining to the load of the electric motor. The control unit determines whether there are any abnormalities on the basis of the physical quantity detected by the detection unit, controls the drive circuit unit in a normal control mode when conditions are determined to be normal, and controls the drive circuit unit in an abnormal control mode when conditions are determined to be abnormal.
This control device that supplies DC power from a DC power supply unit and controls driving of a load device includes: a power conversion unit that converts the DC power and supplies the converted power to the load device; and a control unit that outputs a control signal that controls the power conversion unit. The control unit tracks the maximum power point of the DC power on the basis of the driving state of the load device.
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
G05F 1/67 - Régulation de la puissance électrique à la puissance maximale que peut fournir un générateur, p.ex. une cellule solaire
This pump motor is provided with: a rotating part which rotates around a central axis that extends in the vertical direction; and a stationary part which is provided outside the rotating part in the radial direction. The rotating part is provided with: a shaft which is provided along the central axis; a rotor core which is provided outside the shaft in the radial direction; a magnet which is attached to the outer circumferential surface of the rotor core; and a first base which is in contact with the lower surface of the rotor core, and which is provided outside the shaft in the radial direction. The magnet is provided with a protruding part which protrudes further downwards than the lower surface of the rotor core. The first base is provided with a first protrusion of which the upper surface is in contact with the lower surface of the rotor core, and of which the outer circumferential surface is in contact with the inner surface of the protruding part in the radial direction.
This pump motor is provided with: a rotating part which rotates around a central axis that extends in the vertical direction; and a stationary part which is provided outside the rotating part in the radial direction. The rotating part is provided with: a shaft which is provided along the central axis; a rotor core which is provided outside the shaft in the radial direction; and a first resin part which is disposed between the shaft and the rotor core, and which fixes the shaft and the rotor core.
This pump motor is provided with: a rotor which rotates around a rotational axis that extends in the vertical direction; a stator which is provided outside the rotor in the radial direction; and a cylindrical stator can which is provided to the inner circumferential side of the stator, surrounds the rotor, and extends in the axial direction. The stator can is provided with ribs which protrude from the circumferential surface in the radial direction, and which extend in the axial direction.
H02K 5/128 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction spécialement adaptées à un fonctionnement dans un liquide ou dans un gaz utilisant des manchons d'entrefer ou des disques à film d'air
F04D 13/06 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
H02K 1/16 - Noyaux statoriques à encoches pour enroulements
A washing machine (1) having a washing drum (13) is provided with a first pulley (22) which rotates about the central axis (CA) of the washing drum (13), a plurality of second pulleys (23) coupled to the first pulley (22) via a belt (25), and a plurality of motors (24) for rotating the plurality of second pulleys (23) in the same direction and at the same rotating speed. The pulley ratios between the first pulley (22) and each of the plurality of second pulleys (23) are all the same. The plurality of motors (24) include at least a first motor (24a) and a second motor (24b). The axis of rotation (AR1) of the first motor (24a) is positioned in a region on the opposite side to the axis of rotation (AR2) of the second motor (24b) with a plane comprising the central axis (CA) as the boundary plane therebetween and perpendicularly intersects a plane perpendicularly intersecting the central axis (CA) and the axis of rotation (AR2) of the second motor (24b), or is positioned upon the aforementioned boundary plane.
A control device that is supplied with power from a power generation unit and controls the driving of a motor, said control device having: a drive circuit unit that supplies current to the motor; a control unit that controls the drive circuit unit; and a current detection unit that detects the current value of the current transmitted to the motor. The control unit has: a power supply voltage calculation unit that calculates the voltage value of the power supply unit on the basis of the current value detected by the current detection unit; and an adjustment unit that adjusts the rotational frequency of the motor on the basis of the voltage value calculated by the power supply voltage calculation unit.
This compressor has: a compression part that has a crankshaft arranged along a vertically extending center axis; a base part in which the compression part is arranged; and a motor that rotates the crankshaft about the center axis. The base part has a hollow shaft that vertically extends and that is arranged around the crankshaft. The motor has: a stator that has a stator core arranged radially outward of the hollow shaft; and a rotor that is connected to the crankshaft and arranged radially outward of the stator. A positioning part is interposed between the lower surface of the base part and the upper surface of the stator core.
F04B 39/00 - "MACHINES" À LIQUIDES À DÉPLACEMENT POSITIF; POMPES - Parties constitutives, détails ou accessoires de pompes ou de systèmes de pompage spécialement adaptés aux fluides compressibles, non prévus dans les groupes ou présentant un intérêt autre que celui visé par ces groupes
H02K 7/14 - Association structurelle à des charges mécaniques, p.ex. à des machines-outils portatives ou des ventilateurs
A motor has a rotary section and a stationary section. The rotary section has a shaft which extends along a central axis, a rotor which rotates together with the shaft, and a magnet which is retained by the rotor. The stationary section has a bearing part which rotatably supports the shaft, a stator which is arranged so as to face the radially inward direction of the magnet, and a housing which retains the bearing part and the stator. The rotor has a depressed section which is recessed toward one side in the axial direction and encompasses a portion of the housing. The housing has a first facing part which faces the inside of the depressed section of the rotor on one side in the axial direction. The first facing part has a tapered section which is positioned more radially outward than the bearing part, and for which the distance from the central axis to a radial edge becomes smaller toward one side in the axial direction in at least a portion of the circumferential direction.
H02K 5/10 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des dispositions empêchant l'introduction de corps étrangers, p.ex. de l'eau ou des doigts
F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs
18.
STATOR, MOTOR, AND METHOD FOR MANUFACTURING STATOR
A stator provided annularly around a central axis has a plurality of split cores of magnetic material, an insulator that covers at least a part of the split core, and a conducting wire that is wound around the split core via the insulator. The plurality of split cores are arranged in the circumferential direction. The insulator has a coupling piece that couples adjacent split cores with each other.
H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
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
This outdoor unit of an air conditioner is provided with: a casing; and a fan motor placed inside the casing. The casing has; a bottom member; and a front wall vertically extending from the bottom member. The front wall has a ventilation part having a vent hole formed through the front wall. The fan motor is attached to the ventilation part, and the front wall is a member formed integrally with the bottom member.
F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs
This outdoor unit of an air conditioner is provided with: a casing; and a fan motor placed inside the casing. The casing has: a bottom member; a front wall provided in an upright state with respect to the bottom member; and a stand that supports the front wall. The fan motor is attached to the front wall, and the stand is in contact with the front wall at the upper end thereof, and inclines downwardly away from the front wall.
This outdoor unit of an air conditioner is provided with: a casing; a fan motor; a heat exchanger; and a contact member. The casing has: a bottom surface section; a top surface section positioned above the bottom surface section; a front surface section in which an exhaust port is provided; a back surface section in which a suction port is provided; and two side surface sections. The fan motor is attached to the front surface section inside the casing. The heat exchanger is placed close to the suction port inside the casing. The contact member is placed adjacent to the top surface section, and is in contact with at least a part of the front surface section and with at least a part of the heat exchanger.
F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs
This outside unit of an air conditioner is provided with a housing, a fan motor arranged inside of the housing, and a reinforcing member. The housing has an opening that is disposed in the side wall of the housing, passing through the housing. At least part of the fan motor is arranged inside of the housing in the opening. The reinforcing member is positioned in the opening and the links the housing and the fan motor.
F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs
This outside unit of an air conditioner comprises a housing having an opening, a cover unit having a ventilation hole and covering the opening, a fan motor attached to the cover unit, a circuit board mounted on the fan motor, and a blocking unit which blocks water from reaching the circuit board via the boundary between the cover unit and the fan motor.
F24F 1/56 - Carters ou capots des éléments extérieurs séparés, p.ex. grilles de protection de ventilateurs
H02K 5/10 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des dispositions empêchant l'introduction de corps étrangers, p.ex. de l'eau ou des doigts
H02K 7/14 - Association structurelle à des charges mécaniques, p.ex. à des machines-outils portatives ou des ventilateurs
H02K 11/00 - Association structurelle de machines dynamo-électriques à des organes électriques ou à des dispositifs de blindage, de surveillance ou de protection
Provided is a molded motor equipped with: a stator that includes a stator core on which windings are wound; a resin casing covering the stator; a rotor that includes permanent magnets opposing the stator core on the outside in the radial direction thereof; an output shaft extending in the axial direction and attached to the rotor; a pair of bearings rotatably supporting the output shaft; and a pair of bearing housing members in the interior of which the pair of bearings are housed. The pair of bearing housing members are arranged in the casing, and each holds at least the outer ring of the respective bearing. The pair of bearing housing members are directly or indirectly in contact with the stator core. Thus, this molded motor is capable of suppressing rotational variation and is capable of rotating stably for a long period of time.
H02K 5/173 - Moyens de support des paliers, p.ex. supports isolants ou moyens pour ajuster les paliers dans leurs flasques utilisant des roulements à rouleaux, p.ex. des roulements à billes
This motor has: a stationary unit; a rotor that rotates around a central axis extending up and down on the inside of the stationary unit in the radial direction; a shaft attached to the rotor and extending in the axial direction; and bearings supporting the shaft so as to be capable of rotating with respect to the stationary unit. The rotor has a tubular inside core, a tubular outside core arranged on the outside of the inside core in the diameter direction, a resin part arranged between the inside core and the outside core, and multiple magnets arranged on the outer circumferential surface of the outside core. The inside core has a first inner tube section having multiple first protrusions protruding from the outer circumferential surface toward the outside in the radial direction, and a cylindrical second inner tube section extending in the axial direction from the first inner tube section. The outside core has a first outside tube section having multiple second protrusions protruding from the inner circumferential surface toward the inside in the radial direction, and a cylindrical second outside tube section extending in the axial direction from the first outside tube section. Thus, the electrostatic capacitance between the inside core and the outside core can be minimized. Accordingly, electrical corrosion of the bearings can be reduced.
This fan unit is used in an outdoor unit of an air conditioner, and comprises: a motor; an impeller that rotates by power from the motor; and a panel arranged forward of the impeller and having a plurality of through holes through which airflow created by the rotation of the impeller passes. The motor includes: a stationary part including a stator; and a rotary part including a magnet located more radially outward than the stator. The stationary part is fixed to the panel. The stationary part or the panel has an annular groove part, the center of which is the central axis. The rotary part has an annular end part, the center of which is the central axis. The annular end part is arranged in the annular groove part. In this way, a labyrinth structure is formed by the annular groove part and the annular end part. Thus, the path of entry of water droplets into the motor interior is made long. Therefore, it is possible to inhibit the adhesion of water droplets to the stator while fixing the motor to the panel.
F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs
F24F 1/56 - Carters ou capots des éléments extérieurs séparés, p.ex. grilles de protection de ventilateurs
This fan unit, which is used in an outdoor unit of an air conditioner, has a motor, an impeller, and a panel. The impeller rotates due to the power of the motor about a central axis that extends in the fore-aft direction. The panel is disposed to the front of the impeller and has a plurality of through-holes that transmit an air flow that is generated by the rotation of the impeller. Furthermore, the panel has a center portion, which supports a stationary portion of the motor, and at least one rib. The rib includes a first rib that extends from the center portion toward the outside in the radial direction. The rigidity of the panel is improved due to the fact that the panel has the first rib. This makes it possible to suppress deformation of the panel.
F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs
F24F 1/40 - Prévention des vibrations ou du bruit au niveau des éléments extérieurs
F24F 1/56 - Carters ou capots des éléments extérieurs séparés, p.ex. grilles de protection de ventilateurs
This fan unit of an outdoor unit comprises: a motor; an impeller that rotates by power from the motor; and a panel arranged forward of the impeller. A stationary part of the motor is fixed to the panel. Airflow created by the rotation of the impeller passes through a plurality of through holes provided in the panel. The fan unit has, on the peripheral edge of the panel, a flow-regulating projection that projects in the axial direction. The airflow created by the impeller is regulated by the flow-regulating projection. Thus, it is possible to fix the motor to the panel and to prevent the air permeability of the panel from deteriorating.
F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs
F24F 1/56 - Carters ou capots des éléments extérieurs séparés, p.ex. grilles de protection de ventilateurs
This fan unit for an outdoor unit has a motor, an impeller that rotates due to the power of the motor, and a panel that is disposed to the front of the impeller. A stationary portion of the motor is fixed to the panel. An airflow that is generated by the rotation of the impeller passes through a plurality of through-holes provided in the panel. The panel has a center portion, which supports the stationary portion of the motor, and a ventilation portion, which extends around the center portion. At least a portion of the ventilation portion is located to the front of the center portion. This configuration makes it possible to secure the fan motor to the panel of the outdoor unit and enlarge the distance between the panel and the impeller in the axial direction.
F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs
[Problem] To achieve a multiple-output switching power supply device at reduced cost, using an effective configuration. [Solution] This switching power supply device is provided with: a transformer Tr1 having a primary winding N1 to which an input voltage Vin is applied, a secondary winding N2 and an auxiliary winding N3; a switching element Q1 which turns on and off a current supplied to the primary winding N1; a control unit 101 which performs on-off control of the switching element Q1; an auxiliary voltage generating unit (D2, C3) which generates an auxiliary voltage Vcc2 on the basis of a voltage generated in the auxiliary winding N3; and a toggle unit Q2 which turns on and off the supply of the auxiliary voltage Vcc2 to a primary side load L1. The toggle unit Q2 turns off the supply of the auxiliary voltage Vcc2 to the primary side load L1 before the control unit 101 is activated, and turns on the supply of the auxiliary voltage Vcc2 to the primary side load L1 after the control unit 101 is activated.
H02M 3/28 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire
A washing machine is provided with: a housing; a water tank in which the top surface is open, the water tank being supported inside the housing; a washing tank disposed so as to be capable of rotating about an axis line inside the water tank; a stirring blade disposed coaxially with the washing tank on a bottom section inside the water tank; a clutch unit provided fastened to the bottom surface of the water tank, and around the axis line of the washing tank and the stirring blade; and a motor unit fastened to the bottom surface of the water tank and disposed separated in the horizontal direction from the clutch unit, and linked to the clutch unit. The integrated rotation of the stirring blade and the washing tank and the rotation of the stirring blade alone are switched by the clutch unit, and the weight of the clutch unit is greater than the weight of the motor unit.
This cooling chamber is provided with a compressor, a first heat exchanger, a second heat exchanger which includes an upstream heat exchanging unit and a downstream heat exchanging unit, a first expander connected to the first heat exchanger and the upstream heat exchanging unit, a second expander connected to the upstream heat exchanging unit and the downstream heat exchanging unit, and a switch unit, said cooling chamber cooling a storage chamber by means of the second heat exchanger. A first flow channel is configured from the compressor, the first heat exchanger, the first expander, the upstream heat exchanging unit, and the downstream heat exchanging unit, a second flow channel is configured from the compressor, the first heat exchanger, the upstream heat exchanging unit, the second expander, and the downstream heat exchanging unit, and the switch unit performs switching between the first flow channel and the second flow channel.
This washing machine is provided with a water drum, a filter unit, a first pump, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a fifth pipeline. The first pipeline, the second pipeline and the third pipeline form a first flow path which causes water from the water drum to flow from one side of the filter unit to the other side thereof, and to return to the water drum. The fourth pipeline and the fifth pipeline form a second flow path which causes water discharged from the water drum to flow from the other side of the filter unit to the one side thereof and to be discharged to an external unit. The washing machine is additionally provided with a switching unit which switches between a state in which water from the water drum is caused to flow through the first flow path, and a state in which said water is caused to flow through the second flow path.
In a motor production step, first, a terminal pin is attached to an insulator of a stator. Next, an end of a conducting wire which constitutes a coil is pulled out to the terminal pin side and the conducting wire is wrapped around the terminal pin. Next, the conducting wire and the terminal pin are soldered. Then, a casing is injection-molded, the stator serving as an insert part. In doing so, a mold is brought into contact with the upper surface of the insulator, and the terminal pin is enclosed by the mold, thereby preventing the conducting wire wrapped around the terminal pin from coming into contact with the mold. As a result, it is possible to suppress damage to the conducting wire.
H02K 3/50 - Fixation des têtes de bobines, des connexions équipotentielles ou des connexions s'y raccordant
H02K 15/04 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques d'enroulements, avant leur montage dans les machines
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