To reduce a length of an in-wheel motor driving device in an axial direction and save a weight, and to improve fastening strength and fitting workability of an attachment component, and to prevent leakage of internal lubricating oil.SOLUTION: An in-wheel motor driving device includes: an electric motor part; a reduction gear part B which reduces a rotational speed of the electric motor part and outputs rotation; and a bearing part C for wheels, which transfers output from the reduction gear part to the wheels. In the in-wheel motor driving device, the reduction gear part B is accommodated in a housing 22, and the housing 22 is made of light metal. A shaft bearing 60 for the wheels of the bearing part C for the wheels is coupled and fixed to the housing 22 by using a bolt 71 and a nut 72. The bolt 71 is provided with a detent portion and a seal portion, and the head of the bolt 71 is disposed inside the housing 22, whereas its thread part projects to the outside of the housing 22. Further, the bolt is attached to the housing 22 in a state of being detented relative to the housing and in a state of sealing a gap between an internal part and an external part of the housing 22.SELECTED DRAWING: Figure 3
【課題】 インホイールモータ駆動装置の軸方向長さの短縮及び軽量化を図り、取付け部品の締結強度及び取付け作業性の向上と共に内部潤滑油の漏れ防止を図る。【解決手段】 電動モータ部と、この電動モータ部の回転を減速して出力する減速機部Bと、この減速機部からの出力を車輪に伝達する車輪用軸受部Cとを備え、減速機部Bがハウジング22に収容され、ハウジング22を軽金属製とし、ハウジング22に、車輪用軸受部Cの車輪用軸受60をボルト71及びナット22により連結固定したインホイールモータ駆動装置であって、ボルト71は、回り止め部とシール部が設けられ、ボルト71の頭部をハウジング22の内部に配置すると共に、ねじ部をハウジング22の外部に突出させ、ハウジング22に対して回り止めされて且つハウジング22内部と外部との間をシールした状態で取り付けられている。【選択図】 図3
IN-WHEEL MOTOR DRIVING DEVICE
インホイールモータ駆動装置
2020-06-18
Patent
Electronic Resource
Japanese
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