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Title:
IN-WHEEL MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/133278
Kind Code:
A1
Abstract:
An in-wheel motor drive device (21) is configured in such a manner that a speed reduction section (B) has: a speed reducer input shaft (25) rotated and driven by a motor section (A); and a speed reduction mechanism for reducing the speed of rotation of the speed reducer input shaft (25). The speed reduction mechanism has: eccentric sections (25a, 25b) provided to the speed reducer input shaft (25); curve plates (26a, 26b) rotatably held at the outer peripheries of the eccentric sections (25a, 25b) and revolving about the rotation axis of the speed reducer input shaft (25) as the speed reducer input shaft (25) rotates; and outer pins (27) engaging with the outer peripheral sections of the curve plates (26a, 26b) and causing the curve plates (26a, 26b) to rotate. The outer pins (27) are formed from case hardening steel and has a hardened layer (H) obtained by carburizing, quenching, and tempering.

Inventors:
YUKISHIMA RYOU (JP)
SUZUKI MINORU (JP)
UOZUMI TOMOHISA (JP)
Application Number:
JP2015/054470
Publication Date:
September 11, 2015
Filing Date:
February 18, 2015
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
YUKISHIMA RYOU (JP)
SUZUKI MINORU (JP)
UOZUMI TOMOHISA (JP)
International Classes:
F16H55/06; B60K7/00; F16C17/08; F16C19/46; F16H1/32
Domestic Patent References:
WO2011111269A12011-09-15
Foreign References:
JP2010048280A2010-03-04
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
Kunihiko Shiromura (JP)
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