Title:
BALL SCREW DEVICE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/220215
Kind Code:
A1
Abstract:
[Problem] To achieve a ball screw device capable of transmitting an axial load between a screw portion and a clamping member without decreasing the life of the ball screw device. [Solution] In a screw shaft 2, a fitting shaft portion 10 is provided adjacent, on one side in the axial direction, to a screw portion 9, which is provided with a shaft-side ball screw groove 12 on the outer peripheral surface and has a smaller outer diameter than that of the screw portion 9. A stopper 5 is externally fitted on the fitting shaft portion 10 so as to inhibit relative rotation therebetween. A drive member 6 serving as the clamping member is disposed adjacent to the stopper 5 on the one side in the axial direction, and the stopper 5 is clamped in the axial direction between the drive member 6 and the screw portion 9. The axial load is transmitted between the drive member 6 and the screw portion 9 without causing the moment to act on the stopper 5.
Inventors:
SEGAWA RYO (JP)
Application Number:
PCT/JP2022/017477
Publication Date:
October 20, 2022
Filing Date:
April 11, 2022
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
F16H25/20; F16H25/22; F16H25/24
Foreign References:
| US20110011191A1 | 2011-01-20 | |||
| JP2016070281A | 2016-05-09 | |||
| JP2016070281A | 2016-05-09 |
Other References:
See also references of EP 4206491A4
Attorney, Agent or Firm:
KIWA INTERNATIONAL (JP)
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