Title:
IN-WHEEL MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/141389
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 cause the curve plates (26a, 26b) to revolve; and a motion conversion mechanism that inserts inner pins (31), which are held on the reduction gear output shaft (28) and extend in the axial direction, into through-holes (30a) in the curve plates (26a, 26b) and engage the curve plates (26a, 26b), thereby converting the revolving movement of the curve plates (26a, 26b) to rotational movement around the axis of rotation of the reduction gear input shaft (25), with this movement being transmitted to the reduction gear output shaft (28). The axial clearance of the curve plates (26a, 26b) and the reduction gear output shaft (28) after assembly is 0.12-1.16 mm.
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Inventors:
SUZUKI MINORU (JP)
UOZUMI TOMOHISA (JP)
UOZUMI TOMOHISA (JP)
Application Number:
PCT/JP2015/054824
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:
F16H1/32; B60K7/00
Foreign References:
| JP2013221579A | 2013-10-28 | |||
| JP2009162330A | 2009-07-23 | |||
| 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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