Title:
BALL SCREW DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/061555
Kind Code:
A1
Abstract:
Provided is a ball screw device which is capable of easily and properly performing centering of the nut and the fixed member. To this end, this ball screw device (1) is provided with a screw shaft (10), a nut (20) through which the screw shaft passes and which is arranged so as to be capable of displacement in the axial direction of the screw shaft (10) by screwing on the screw shaft (10) via a rolling element (B), and a fixed member (40). This fixed member (40) is attached to the end surface (20a) of the nut (20), and a dust protection member (60), which prevents foreign matter from entering the nut (20), is attached to the fixed member (40). Also, on the end surface (20a) of the nut (20), a spigot joint unit (20b) is formed which fits onto the outer circumference surface (42a) of the flange (42) of the fixed member (40).
Inventors:
KUROIWA DAISUKE (JP)
MINAKUCHI JUNJI (JP)
MINAKUCHI JUNJI (JP)
Application Number:
PCT/JP2012/006715
Publication Date:
May 02, 2013
Filing Date:
October 19, 2012
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
F16H25/24
Foreign References:
| JP2003232428A | 2003-08-22 | |||
| JP2005308088A | 2005-11-04 | |||
| JP2010043244A | 2010-02-25 | |||
| JP2008045632A | 2008-02-28 |
Attorney, Agent or Firm:
MORI, Tetsuya et al. (JP)
Woods Tetsuya (JP)
Woods Tetsuya (JP)
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