Title:
BALL SCREW DEVICE AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
WIPO Patent Application WO/2023/223930
Kind Code:
A1
Abstract:
[Problem] To provide a ball screw device with which it is possible to effectively prevent a fitting shaft part of a screw shaft from slipping out of a fitting member in the axial direction even when a moment around an axis perpendicular to a center axis acts on the screw shaft or the fitting member. [Solution] The fitting shaft part has an inner-diameter-side engaging part on which a plurality of external teeth are circumferentially disposed on the outer peripheral surface, the fitting member has an outer-diameter-side engaging part on which a plurality of internal teeth are circumferentially disposed on the inner peripheral surface and which engages with the inner-diameter-side engaging part, the engaging part between the inner-diameter-side engaging part and the outer-diameter-side engaging part has, in a part thereof along an axial direction, a portion having an interference in a radial direction, and the fitting shaft part has, at the end on one side in the axial direction, a crimped part that engages with the fitting member in the axial direction.
More Like This:
| JP2018177100 | STEERING DEVICE |
| JP2008202718 | BALL SCREW MECHANISM |
Inventors:
SEGAWA RYO (JP)
NAKABAYASHI YUTA (JP)
NAKABAYASHI YUTA (JP)
Application Number:
PCT/JP2023/017692
Publication Date:
November 23, 2023
Filing Date:
May 11, 2023
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
F16H25/24; F16D1/06; F16H25/20; F16H25/22
Foreign References:
| JP2021129384A | 2021-09-02 | |||
| JP2011131641A | 2011-07-07 | |||
| JPH0357551U | 1991-06-03 |
Attorney, Agent or Firm:
KIWA INTERNATIONAL (JP)
Download PDF: