JPH03112474U

JPH03112474U -

Info

Publication number: JPH03112474U
Application number: JP2134890U
Authority: JP
Priority date: 1990-03-01
Filing date: 1990-03-01
Publication date: 1991-11-18
Anticipated expiration: 2005-03-01
Also published as: JP2518314Y2

Description

[Brief explanation of drawings]

第１図〜第３図は、本考案の第一実施例に関す
る図面である。第１図ａはリヤステアリングボツ
クスの水平断面図、同図ｂは同図ａにおけるｂ−
ｂ断面図、第２図はそのボツクスを含む四輪操舵
装置の全体を示す模式図、また第３図は原動体（
円筒カム）の外周面展開図である。第４図は本考
案の第二実施例を示し、同図ａはリヤステアリン
グボツクスの水平断面図、同図ｂはそのｂ−ｂ断
面図。そして第５図は、本考案の第三実施例とし
てのリヤステアリングボツクス等を示す平面（一
部断面）図である。一方、第６図は従来のリヤス
テアリングボツクスに関する内部模式図である。１……ハンドル、１０……前輪、２０……後輪
、２３……ステアリングシヤフト、２４……リヤ
タイロツド、１００，２００……リヤステアリン
グボツクス、１２０，２２０……入力軸、１２１
，２２１……円筒カム（原動体）、１２１ａ……
溝、２２１ａ……突起、１３０，２３０……従動
軸（従動体）。 1 to 3 are drawings relating to a first embodiment of the present invention. Fig. 1a is a horizontal sectional view of the rear steering box, and Fig. 1b is a horizontal sectional view of the rear steering box.
Fig. 2 is a schematic diagram showing the entire four-wheel steering system including its box, and Fig. 3 is a sectional view of the driving body (
FIG. 3 is a developed view of the outer peripheral surface of a cylindrical cam. Fig. 4 shows a second embodiment of the present invention, in which Fig. 4a is a horizontal sectional view of the rear steering box, and Fig. 4b is a sectional view taken along line bb. FIG. 5 is a plan view (partially in section) showing a rear steering box and the like as a third embodiment of the present invention. On the other hand, FIG. 6 is an internal schematic diagram of a conventional rear steering box. 1... Handle, 10... Front wheel, 20... Rear wheel, 23... Steering shaft, 24... Rear tie rod, 100, 200... Rear steering box, 120, 220... Input shaft, 121
, 221...Cylindrical cam (driving body), 121a...
Groove, 221a... protrusion, 130, 230... driven shaft (driven body).

Claims

[Scope of Claim for Utility Model Registration] A rear steering box for four-wheel steering for converting the rotational displacement of the steering shaft accompanying front wheel steering into left and right displacement of the rear tie rod, which The outer peripheral surface is provided with a curved groove or projection drawn in the circumferential direction and an amount equivalent to the rear wheel steering angle in the axial direction, and the cylindrical driving body that rotates together with the steering shaft engages with the groove or projection described above. A rear steering box for four-wheel steering, characterized by incorporating a cam mechanism that combines a driven body and a driven body that is displaced in the axial direction when the driving body rotates.