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Patent Searching and Data


Title:
ボールねじ装置
Document Type and Number:
Japanese Patent JP6848599
Kind Code:
B2
Abstract:
A ball screw device includes a screw shaft, a nut, a ball train including a plurality of main balls, and a plurality of coil springs disposed in the ball train. The nut moves from a first axial side to a second axial side while an axial force is applied to the nut by rotation of the screw shaft. The plurality of coil springs are more densely arranged on the first axial side than on the second axial side in the ball train.

Inventors:
Akiyoshi Tashiro
Application Number:
JP2017066087A
Publication Date:
March 24, 2021
Filing Date:
March 29, 2017
Export Citation:
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Assignee:
JTEKT Corporation
International Classes:
F16H25/22; B60T13/74; F16D65/18
Domestic Patent References:
JP54120366A
Foreign References:
US20110162935
Attorney, Agent or Firm:
Patent Business Corporation Suncrest International Patent Office