发明名称 Rotating electric machine
摘要 A rotating electric machine includes an inner-circumferential-side shaft, an outer-circumferential-side shaft, and a rotor. The rotor is secured to the outer-circumferential-side shaft. The inner-circumferential-side shaft is rotatably supported by a bearing that is provided between a gear and the rotor. An outer circumference of the inner-circumferential-side shaft and an inner circumference of the outer-circumferential-side shaft are spline-fitted to each other at a spline-fitted portion. The outer-circumferential-side shaft has a loosely fitted portion that is provided on the inner circumference of the outer-circumferential-side shaft and that is fitted on the outer circumference of the inner-circumferential-side shaft with a first gap having a predetermined length provided between the loosely fitted portion and the outer circumference of the inner-circumferential-side shaft. The first gap is smaller than a second gap provided at the spline-fitted portion between the inner-circumferential-side shaft and the outer-circumferential-side shaft.
申请公布号 US9300183(B2) 申请公布日期 2016.03.29
申请号 US201314014355 申请日期 2013.08.30
申请人 HONDA MOTOR CO., LTD. 发明人 Miyazaki Shogo;Nagahiro Kentaro
分类号 H02K7/00;H02K51/00;H02K7/08 主分类号 H02K7/00
代理机构 Mori & Ward, LLP 代理人 Mori & Ward, LLP
主权项 1. A rotating electric machine comprising: an inner-circumferential-side shaft having a gear that is provided integrally therewith, the inner-circumferential-side shaft being monolithic; an outer-circumferential-side shaft provided on the outer circumferential side of the inner-circumferential-side shaft; a rotor secured to the outer-circumferential-side shaft, the inner-circumferential-side shaft being directly rotatably supported by a bearing that is provided between the gear and the rotor, an outer circumference of the inner-circumferential-side shaft and an inner circumference of the outer-circumferential-side shaft being spline-fitted to each other at a spline-fitted portion, the outer-circumferential-side shaft having a gap fitted portion that is provided on the inner circumference of the outer-circumferential-side shaft and that is fitted on the outer circumference of the inner-circumferential-side shaft with a first gap having a predetermined length provided between the gap fitted portion and the outer circumference of the inner-circumferential-side shaft, the first gap being smaller than a second gap provided at the spline-fitted portion between the inner-circumferential-side shaft and the outer-circumferential-side shaft; and a stator facing an outer circumference of the rotor, wherein the gap fitted portion includes a first gap fitted portion provided on a first side of the spline-fitted portion in an axial direction of the inner-circumferential-side shaft, and a second gap fitted portion provided on a second side of the spline-fitted portion in the axial direction, the second side being opposite to the first side with respect to the spline-fitted portion in the axial direction, and wherein the first gap fitted portion and the second gap fitted portion are each provided on the inner circumference of the outer-circumferential-side shaft and directly face the outer circumference of the inner-circumferential-side shaft.
地址 Tokyo JP