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1. (WO2017154255) IN-WHEEL MOTOR DRIVE DEVICE

Pub. No.:    WO/2017/154255    International Application No.:    PCT/JP2016/080166
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Oct 13 01:59:59 CEST 2016
IPC: F16H 1/06
B60K 7/00
B60K 17/14
Applicants: NTN CORPORATION
NTN株式会社
Inventors: TAMURA, Shiro
田村 四郎
TAIKOU, Shinya
太向 真也
Title: IN-WHEEL MOTOR DRIVE DEVICE
Abstract:
A deceleration unit (31) in an in-wheel motor drive device (10) includes: an input shaft (32); an output shaft (41) that joins to a wheel hub (12) and extends parallel to the input shaft; at least one intermediate shaft (35, 38) that extends parallel to the input shaft and the output shaft; an input gear (33) that joins to the input shaft; an output gear (40) that joins to the output shaft; and a plurality of intermediate gears (34, 36, 37, 39) that join to the intermediate shaft. The input gear, the plurality of intermediate gears, and the output gear mutually engage and constitute a drive transmission path from the input gear to the output gear via the plurality of intermediate gears. The diameter of at least one intermediate gear (37) among the plurality of intermediate gears is larger than the diameter of the output gear (40).