Denso Corporation

Takashi Kumakura

Tetsuya Gorohata

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.

Stator arrangement of a rotary electric machine having lead wires in sagging contact with the stator winding

A rotary electric apparatus, such as motor, comprises a rotor and a stator arranged to face the rotor in the radial direction. The rotor rotates together with a rotation shaft. The stator has a cylindrical stator core, a stator winding wound in the stator core to have coil-end blocks arranged to protrude respectively from both ends of the stator core in the axial direction and being arranged on both sides of the stator core in the circumferential direction, and a lead wire taken from the windings. The lead wire includes a first wire portion taken along the axial direction from one of the coil-end blocks, a second wire portion extended from the first wire portion and arranged partly along the circumferential direction to be secured with resin material on the coil-end block, and a third wire portion extended from the second wire portion and arranged outwards in the radial direction.

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Nishio, Japan

Takashi Kumakura