Title:
RACK-AND-PINION STEERING GEAR UNIT
Document Type and Number:
WIPO Patent Application WO/2012/157605
Kind Code:
A1
Abstract:
The present invention provides a rack-and-pinion steering gear unit whereby the operating force of a steering wheel or the operating assist force of an electric motor can be prevented from increasing, and whereby response can be improved in fine operations during forward travel and the like. A back surface (29) of a rack shaft (9) is elastically pressed toward a pinion shaft (5) by a pressing roller (34). The pressing roller (34) is rotatably supported, via a radial needle bearing (16a), on a support shaft (33) supported on and fixed to a holder (30). A thrust needle bearing (35) for bearing a thrust load applied by the pressing roller (34) is provided between an inner side surface of the holder (30) and two side surfaces of the pressing roller (34) in the axial direction.
Inventors:
AMADA SHINYA (JP)
ARAI TOSHIYUKI (JP)
ARAI TOSHIYUKI (JP)
Application Number:
PCT/JP2012/062294
Publication Date:
November 22, 2012
Filing Date:
May 14, 2012
Export Citation:
Assignee:
NSK LTD (JP)
AMADA SHINYA (JP)
ARAI TOSHIYUKI (JP)
AMADA SHINYA (JP)
ARAI TOSHIYUKI (JP)
International Classes:
B62D3/12; F16H19/04
Foreign References:
| JPH0249782U | 1990-04-06 | |||
| JPH11286277A | 1999-10-19 | |||
| JP2008169862A | 2008-07-24 | |||
| JP2004017872A | 2004-01-22 | |||
| JPH03193556A | 1991-08-23 | |||
| JP2001260906A | 2001-09-26 | |||
| JP2006282103A | 2006-10-19 | |||
| JP2007062397A | 2007-03-15 | |||
| JPS61124471U | 1986-08-05 | |||
| JP2009184591A | 2009-08-20 | |||
| JP2009184591A | 2009-08-20 | |||
| JP2004017872A | 2004-01-22 | |||
| JPS61124471U | 1986-08-05 |
Other References:
See also references of EP 2708443A4
Attorney, Agent or Firm:
Kiwa International (JP)
Patent business corporation Takakazu patent firm (JP)
Patent business corporation Takakazu patent firm (JP)
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Claims: