Coil structure for electric motor
First Claim
1. A multi-phase driving electric motor having a stator and a rotor arranged so as to confront the stator, said stator comprising:
- (a) a stator core provided with a plurality of slots facing toward the rotor in a direction parallel with a rotating shaft of the rotor, and(b) a coil having;
(b-1) a plurality of molded coil pieces inserted in to each slot, and(b-2) a plurality of connecting members connecting the molded coil pieces in the slot to the molded coil pieces in another slot having the same phase as the former coil pieces, said connecting members being arranged on two edges of the stator in the direction parallel with rotating shaft of the rotor, and having an integral structure of plurality of conductive members laminated via insulating layers and said conductive members and insulating layers being perpendicular to the rotating shaft and layered in the direction of the rotating shaft.
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Accused Products
Abstract
Molded coil pieces inserted into a slot are separately connected to molded coil pieces belonging to another slot of the same phase as the former coil pieces by a connecting member. The connecting member has conductive members laminated in a direction perpendicular to a rotating shaft of the rotor in the motor via insulating layers, and the molded coil pieces are separately connected to each other by these conductive members, whereby the protrusion of a coil end from each slot can be reduced, which permits the miniaturization and the weight reduction of the motor. Furthermore, the dimensional accuracy of the connecting members can be improved by a simple constitution and manufacturing process, whereby the characteristics of the electric motor can be remarkably improved.
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Citations
11 Claims
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1. A multi-phase driving electric motor having a stator and a rotor arranged so as to confront the stator, said stator comprising:
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(a) a stator core provided with a plurality of slots facing toward the rotor in a direction parallel with a rotating shaft of the rotor, and (b) a coil having; (b-1) a plurality of molded coil pieces inserted in to each slot, and (b-2) a plurality of connecting members connecting the molded coil pieces in the slot to the molded coil pieces in another slot having the same phase as the former coil pieces, said connecting members being arranged on two edges of the stator in the direction parallel with rotating shaft of the rotor, and having an integral structure of plurality of conductive members laminated via insulating layers and said conductive members and insulating layers being perpendicular to the rotating shaft and layered in the direction of the rotating shaft.
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2. A multi-phase driving electric motor having a stator and a rotor arranged so as to confront the stator, said stator comprising:
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(a) a stator core provided with a plurality of slots facing toward the rotor in a direction parallel with a rotating shaft of the rotor, and (b) a coil having; (b-1) a plurality of molded coil pieces inserted in each slot, and (b-2) a plurality of connecting members connecting the molded coil pieces in the slot to the molded coil pieces in another slot having the same phase as the former coil pieces, said connecting members being arranged on two edges of the stator in the direction parallel with rotating shaft of the rotor, and having a plurality of conductive members laminated via insulating layers in the direction perpendicular to the rotating shaft, wherein said connecting members have a plurality of conductive pipes, the end portion of one molded coil piece can be inserted into each conductive pipe, and the inserted molded coil piece is electrically connected to the conductive member corresponding to the molded coil piece but insulated from the conductive member corresponding to the other molded coil piece. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification