Stator arrangement of a rotary electric machine having lead wires in sagging contact with the stator winding
First Claim
1. A stator of a rotary electric machine comprising a stator winding and a stator core having a plurality of slots in which portions of the stator winding are disposed,wherein the stator winding comprises:
- a plurality of series-connected regular segments having a pair of in-slot portions inserted into a regularly disposed pair of the slots and a turn portion; and
a plurality of irregular segments having a pair of in-slot portions disposed in a pair of slots whose location is suitable to connect the regular segments to form the stator winding and a continuous crossover portion crossing over some of the regular segments, andwherein;
the turn portions of the regular segments have portions extending along a center axis of the stator core between a top thereof and one end of the stator core;
the continuous crossover portion has a sagging portion in contact with a portion of one of the regular segments extending along the center axis at a central portion thereof so as to reduce bending stress; and
the crossover portion crosses over two neighboring regular segments that are arranged to be closer to each other in the circumferential direction than other regular segments.
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Accused Products
Abstract
In a stator of a rotary electric machine that includes a stator winding and a stator core having a plurality of slots, the stator winding is constituted of a plurality of series-connected regular U-shaped segments each of which has a pair of in-slot portions and a plurality of U-shaped irregular segments each of which has a pair of in-slot portions disposed in a pair of slots that is suitable to connect the regular segments to form the stator winding and a continuous crossover portion crossing over some of the regular segments. The irregular U-shaped segments extend to be in contact with the turn portions of the regular segments. Therefore, the regular segments are connected by the irregular segments that have least electric resistance.
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Citations
5 Claims
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1. A stator of a rotary electric machine comprising a stator winding and a stator core having a plurality of slots in which portions of the stator winding are disposed,
wherein the stator winding comprises: -
a plurality of series-connected regular segments having a pair of in-slot portions inserted into a regularly disposed pair of the slots and a turn portion; and a plurality of irregular segments having a pair of in-slot portions disposed in a pair of slots whose location is suitable to connect the regular segments to form the stator winding and a continuous crossover portion crossing over some of the regular segments, and wherein; the turn portions of the regular segments have portions extending along a center axis of the stator core between a top thereof and one end of the stator core; the continuous crossover portion has a sagging portion in contact with a portion of one of the regular segments extending along the center axis at a central portion thereof so as to reduce bending stress; and the crossover portion crosses over two neighboring regular segments that are arranged to be closer to each other in the circumferential direction than other regular segments. - View Dependent Claims (2, 3, 4, 5)
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Specification