Title:
ねじ軸およびその製造方法、並びに、ステアリングホイールの電動位置調節装置およびその製造方法
Document Type and Number:
Japanese Patent JP7115547
Kind Code:
B2
Abstract:
A screw shaft includes a large-diameter shaft portion having a male-side screw portion over the entire length of the outer circumferential surface thereof; a first small-diameter shaft portion arranged adjacent to one side in the axial direction of the large-diameter shaft portion, and having an outer diameter that is smaller than the outer diameter of the large-diameter shaft portion, and having a helical first rolling mark on the outer circumferential surface thereof; and a second small-diameter shaft portion arranged adjacent to the other side in the axial direction of the large-diameter shaft portion, and having an outer diameter that is smaller than the outer diameter of the large-diameter shaft portion, and having a helical first rolling mark on the outer circumferential surface thereof.
Inventors:
Takeshi Saito
Application Number:
JP2020536412A
Publication Date:
August 09, 2022
Filing Date:
July 17, 2019
Export Citation:
Assignee:
Nippon Seiko Co., Ltd.
International Classes:
B21H3/04; B21H3/02; B62D1/185; F16H25/24
Domestic Patent References:
| JP9225573A | ||||
| JP2010208440A | ||||
| JP2015227166A | ||||
| JP2003033841A | ||||
| JP2008281142A |
Attorney, Agent or Firm:
Kiwa Patent Office
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