Title:
RACK-AND-PINION TYPE STEERING DEVICE, AND METHOD OF FORMING SLIDING SURFACE OF GUIDE MEMBER IN THE DEVICE
Document Type and Number:
Japanese Patent JP2009160961
Kind Code:
A
Abstract:
To provide a rack-and-pinion type steering device which suppresses initial wear of a sliding portion of a guide member and an outer circumferential surface of a rack and prevents generation of rattling noise.
A rack guide 36 to press the rack 26 against the side of a pinion 25a has the guide member 36b which freely slidably abuts on the outer circumferential surface 26a of the rack formed into a cylindrical surface shape protruding with a predetermined radius of curvature. The sliding portion 37 in a recessed cylindrical surface of the guide member is partially provided with sliding surfaces 37a, 37b each formed into a cylindrical surfaces shape having the same radius of curvature as the outer circumferential surface of the rack.
Inventors:
NISHIKUBO HIROKI
Application Number:
JP2007339350A
Publication Date:
July 23, 2009
Filing Date:
December 28, 2007
Export Citation:
Assignee:
NSK LTD
International Classes:
B62D3/12; B24B29/02
Attorney, Agent or Firm:
Shigeru Kobayashi