Title:
BALL SCREW DEVICE AND STEERING DEVICE
Document Type and Number:
Japanese Patent JP2020176678
Kind Code:
A
Abstract:
To reduce gear rattle in a ball screw device.SOLUTION: A ball screw device includes: a screw shaft body 110; a ball nut 120; a first housing 141; a second housing 142; a bearing 170 which pivotally supports the ball nut 120; an annular first biasing member 191 and a second biasing member 192 which are respectively disposed on both end surfaces of the bearing 170; and a first holding member 181 and a second holding member 182 which respectively hold the biasing members. The first housing 141 includes: a cylindrical bearing holding part 143; and a diameter expansion part which has an expanded diameter. The second housing 142 includes a pressing part 146. The first holding member 181 is inserted into the bearing holding part 143. The second holding member 182 includes a flange part 189 which is housed in the diameter expansion part 144 in a state that the second holding member 182 is inserted into the bearing holding part 143. Connection between the first housing 141 and the second housing 142 applies a pre-load to the biasing members.SELECTED DRAWING: Figure 3
Inventors:
INUMA YUSUKE
Application Number:
JP2019078795A
Publication Date:
October 29, 2020
Filing Date:
April 17, 2019
Export Citation:
Assignee:
JTEKT CORP
International Classes:
F16H25/24; B62D5/04; F16C27/06; F16C35/077; F16H25/20; F16H25/22
Attorney, Agent or Firm:
Hiromori Arai