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Patent Searching and Data


Title:
IN-WHEEL MOTOR DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/140067
Kind Code:
A1
Abstract:
An in-wheel motor drive device is provided with: a motor section A; a speed reducer section B; a bearing section C for a wheel; a casing 22 for accommodating the motor section A and the speed reducer section B; and a lubricating mechanism having an axial oil feed structure for feeding lubricating oil using a rotary pump 51 from an oil passage 22a in the casing 22 to the speed reducer input shaft 25 of the speed reducer section B through the motor rotation shaft 24 of the motor section A. The lubricating mechanism is provided with: an oil passage 25c axially formed in the speed reducer input shaft 25; and oil holes 25d-25f which are arranged at a plurality of locations from the upstream side to the downstream side of the oil passage 25c, are in communication with the oil passage 25c, and are open to the outside of the speed reducer input shaft 25. The equivalent conduit diameter of each of the oil holes 25d-25f is set in the range from 0.5 mm to 4 mm, inclusive.

Inventors:
SUZUKI MINORU (JP)
UOZUMI TOMOHISA (JP)
Application Number:
PCT/JP2016/054600
Publication Date:
September 09, 2016
Filing Date:
February 17, 2016
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16H1/32; B60K7/00; F16H57/04
Foreign References:
JP2015034557A2015-02-19
JP2009197821A2009-09-03
JP2007024234A2007-02-01
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (JP)
Kunihiko Shiromura (JP)
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