IN-WHEEL MOTOR DRIVING DEVICE - NTN TOYO BEARING CO LTD

Title:

IN-WHEEL MOTOR DRIVING DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/054559

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing an in-wheel motor driving device having a structure by which even if bending moment is applied to a final output gear (9) of a speed reducer (B) by tire lateral force such as a turning load, a gear shaft (9a) of the final output gear (9) is not easily inclined. A gear shaft (9a) of an output gear (9) of a speed reducer (B) of an in-wheel motor driving device (1) is supported at both ends to a housing (11), a spline hole (9b) is formed in the gear shaft (9a), which is supported at both ends, of the output gear (9), and an output shaft (13) of a wheel hub (C) is spline-coupled to the spline hole (9b). Consequently, even if bending moment is applied to the output gear (9), the gear shaft (9a) is not easily inclined, and even if shaft deflection occurs in the output shaft (13) of the wheel hub (C) due to external force such as tire lateral force, the deformation and displacement thereof are accommodated by a gap in a spline that couples the output shaft (13) of the wheel hub (C) and the output gear (9).

Inventors:

ISHIKAWA AIKO (JP)
YAMAMOTO KEN (JP)
YAMAMOTO TETSUYA (JP)

Application Number:

PCT/JP2013/076490

Publication Date:

April 10, 2014

Filing Date:

September 30, 2013

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)

International Classes:

B60B35/14; B60K7/00; B60K17/14; F16C19/06; F16C19/18; F16C35/073; F16D1/06; F16H57/02

Domestic Patent References:

WO2005023575A1

2005-03-17

Foreign References:

JP2009190440A	2009-08-27
JP2002266987A	2002-09-18
JP2002037094A	2002-02-06
JP2008121813A	2008-05-29
JP2008174020A	2008-07-31
JP2013071685A	2013-04-22
JP2012072873A	2012-04-12

Other References: