Title:
RACK GUIDE AND GEAR MECHANISM
Document Type and Number:
Japanese Patent JP2018155305
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To reduce an influence caused by a variation of the formation of a curvature radius of a back face or the like of a rack bar while expanding a contact region contacting with the rack bar.SOLUTION: As a slide face 33 of a rack guide sheet 32, two contact positions TA, TB which are linearly symmetric with respect to a linear line O3 for connecting a center O of a rack bar 20 and a bottom center C of the slide face 33 at a YZ-cross section vertical to an axial line direction of the rack bar 20 are set as contact positions contacting with a back face 22 of the rack bar 20, and there is used a recessed face 330 including a pair of first circular faces 331A, 331B which are arranged at a peripheral edge side 320 of the slide face 33 from the contact positions TA, TB, and linear to the linear line O3, and a pair of second circular faces 332A, 332B which are arranged at a bottom side 321 of the slide face 33 from the contact positions TA, TB, and linearly symmetric with respect to the linear line O3. Then, the first circular faces 331A, 331B are set larger than the second circular faces 332A, 332B with respect to a gap with the back face 22 of the rack bar 20 at a position separated from the contact positions TA, TB by the same distances.SELECTED DRAWING: Figure 3
Inventors:
NAKAGAWA NOBORU
KIKUCHI HIROYUKI
KIKUCHI HIROYUKI
Application Number:
JP2017051957A
Publication Date:
October 04, 2018
Filing Date:
March 16, 2017
Export Citation:
Assignee:
OILES INDUSTRY CO LTD
International Classes:
F16H19/04; B62D3/12
Attorney, Agent or Firm:
Mitsuhiro Ozeki