Title:
IN-WHEEL MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/142701
Kind Code:
A1
Abstract:
A deceleration part of this in-wheel motor drive device includes an output shaft (38) linked with a rotating wheel (12) of a vehicle wheel hub bearing part (11), an output gear (37) which is a helical gear coaxially linked with the output shaft, and a first bearing (38b) and second bearing (38a) rotatably supporting the output shaft, the stiffness of the second bearing being higher than the stiffness of the first bearing. This in-wheel motor drive device is characterized in that when the orientation of an axial load (Fa) exerted on a meshing part of an output gear (37) is to one side of the output shaft (38) along the axial direction during forward driving, the second bearing (38a) is disposed in a position to one side of the output gear (37) along the axial direction and the first bearing (38b) is disposed to the other side of the output gear along the axial direction.
Inventors:
TAMURA SHIRO (JP)
TAIKOU SHINYA (JP)
SUGIURA SAORI (JP)
TAIKOU SHINYA (JP)
SUGIURA SAORI (JP)
Application Number:
PCT/JP2019/000296
Publication Date:
July 25, 2019
Filing Date:
January 09, 2019
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
B60K7/00; B60K17/14; F16C19/16; F16C19/56; F16H1/08
Foreign References:
| JP2017150640A | 2017-08-31 | |||
| JP2002048221A | 2002-02-15 | |||
| JP2016109229A | 2016-06-20 | |||
| JP2014073730A | 2014-04-24 |
Attorney, Agent or Firm:
IMY INTERNATIONAL PATENT OFFICE, P.C. (JP)
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