Title:
IN-WHEEL MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/141387
Kind Code:
A1
Abstract:
An in-wheel motor drive device (21) wherein a reduction gear input shaft (25) having eccentric parts (25a, 25b) is rotationally driven with a motor section (A) and the rotational speed of the reduction gear input shaft (25) is reduced in a reduction section (B) and transmitted to a reduction gear output shaft (28). The reduction section (B) is equipped with: the reduction gear input shaft (25); curve plates (26a, 26b) that undergo orbital motion centered around the axis of rotation of the reduction gear input shaft (25) in conjunction with the rotation thereof; outer pins (27) that are rotatably held on a casing (22) by means of needle roller bearings (27a), and cause the curve plates (26a, 26b) to revolve; and a motion conversion mechanism that converts the revolving movement of the curve plates (26a, 26b) to rotational movement around the axis of rotation of the reduction gear input shaft (25) and transmits this movement to the reduction gear output shaft (28). In the needle roller bearings (27a) of the outer pins (27) the axial clearance of an outer ring and a retainer after assembly is 0.08-0.90 mm.
Inventors:
SUZUKI MINORU (JP)
UOZUMI TOMOHISA (JP)
UOZUMI TOMOHISA (JP)
Application Number:
PCT/JP2015/054800
Publication Date:
September 24, 2015
Filing Date:
February 20, 2015
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
SUZUKI MINORU (JP)
UOZUMI TOMOHISA (JP)
SUZUKI MINORU (JP)
UOZUMI TOMOHISA (JP)
International Classes:
B60K7/00; F16H1/32; F16C19/46; F16C33/58
Foreign References:
| JP2012202457A | 2012-10-22 | |||
| JP2013148198A | 2013-08-01 | |||
| JP2008057739A | 2008-03-13 |
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
Kunihiko Shiromura (JP)
Kunihiko Shiromura (JP)
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