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.
15 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