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1. (WO2018083810) IN-WHEEL MOTOR DRIVE DEVICE

Pub. No.:    WO/2018/083810    International Application No.:    PCT/JP2016/084815
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Fri Nov 25 00:59:59 CET 2016
IPC: B60K 7/00
F16H 1/06
H02K 7/116
Applicants: NTN CORPORATION
NTN株式会社
Inventors: TAMURA Shiro
田村 四郎
Title: IN-WHEEL MOTOR DRIVE DEVICE
Abstract:
The present invention makes an in-wheel motor drive device more compact and, as a result, increases the versatility of the drive device and peripheral elements thereof. This in-wheel motor drive device (21) comprises a motor (A), a wheel bearing (C), and a decelerator (B). The decelerator (B) has: an input shaft (35) having rotational driving force input thereto; an output shaft (38) from which rotational driving force is output; at least one intermediate shaft (36) parallel to the input shaft (35) and the output shaft (38); an input gear (30) provided on the input shaft (35); an output gear (34) provided on the output shaft (38); and a large-diameter intermediate gear (31) and a small-diameter intermediate gear (32) provided on the intermediate shaft (36) and having mutually different pitch circle diameters. The input gear (30), the output gear (34), the large-diameter intermediate gear (31), and the small-diameter intermediate gear (32) constitute a power transmission path from the input shaft (35) to the output shaft (38). An idler gear (33) is arranged on this power transmission path.