Title:
IN-WHEEL MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/110878
Kind Code:
A1
Abstract:
The present invention addresses the problem of preventing the shortage of an oil film at a spline fitting portion by supplying lubricating oil to the joint where the rotating shaft of a motor and the input gear shaft of a speed reducer section are joined by spline fitting or the like. This in-wheel motor device is provided with an electric motor section A, a speed reducer section B which reduces the speed of the electric motor section A and outputs the reduced speed, and a bearing section C for a wheel, which transmits to the wheel the output from the speed reducer section B. The speed reducer section B is accommodated in a speed reducer casing 22 and is provided with an input gear shaft 30, an intermediate gear shaft 31, and an output gear shaft 36. The input gear shaft 30 is configured as a hollow shaft and is coaxially connected to the rotating shaft 25 of the electric motor section A by spline fitting. An oil supply opening 85a which supplies lubricating oil into the input gear shaft 30, and an oil storage section 22d which communicates with the oil supply opening 85a are formed at positions facing the outboard-side end section of the input gear shaft 30.
Inventors:
SATO KATSUNORI (JP)
TAMURA SHIRO (JP)
TAIKOU SHINYA (JP)
TAMURA SHIRO (JP)
TAIKOU SHINYA (JP)
Application Number:
PCT/JP2019/045562
Publication Date:
June 04, 2020
Filing Date:
November 21, 2019
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
B60K7/00; F16H1/06; F16H57/04; H02K7/116
Foreign References:
| JP2017065671A | 2017-04-06 | |||
| JP2012163120A | 2012-08-30 | |||
| JPH08230489A | 1996-09-10 |
Attorney, Agent or Firm:
TORII Kazuhisa et al. (JP)
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