JPS6087869U

JPS6087869U - Power steering device

Info

Publication number: JPS6087869U
Application number: JP18135683U
Authority: JP
Inventors: 晃長谷川
Original assignee: トヨタ自動車株式会社
Priority date: 1983-11-24
Filing date: 1983-11-24
Publication date: 1985-06-17
Also published as: JPH0311101Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例に係る動力舵取装置の縦断
面図、第２図は第１図の■−■線に沿う拡大横断面図、
第３図は同装置の変形例を示す部分縦断面図、第４図は
第２実施例に係る動力舵取装置の部分縦断面図、第５図
は第４図の■−■線に沿う拡大横断面図、第６図は第３
実施例に係る動力舵取装置の部分縦断面図、第７図は第
６図の■−■線に沿う拡大横断面図である。符号の説明、１２・・・・・・インプットシャフト、１
２ａ、１２ｂ・・・・・・カム面、１２ｃ・・・・・・
カムピン、１４・・・・・・ピニオンシャフト、１４ｂ
・・・・・・組付孔、２１……バルブロータ、２２……
バルブスリーブ、２４，２４Ａ〜２４Ｃ・・・・・・カ
ムフォロア、２５・・・・・・スプリング。FIG. 1 is a longitudinal cross-sectional view of a power steering device according to a first embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view taken along the line ■-■ in FIG. 1,
FIG. 3 is a partial vertical sectional view showing a modification of the same device, FIG. 4 is a partial vertical sectional view of the power steering device according to the second embodiment, and FIG. 5 is taken along the line ■-■ in FIG. 4. Enlarged cross-sectional view, Figure 6 is the 3rd
FIG. 7 is a partial longitudinal cross-sectional view of the power steering device according to the embodiment, and is an enlarged cross-sectional view taken along the line ■-■ in FIG. 6. Explanation of symbols, 12...Input shaft, 1
2a, 12b...Cam surface, 12c...
Cam pin, 14...Pinion shaft, 14b
...Assembly hole, 21...Valve rotor, 22...
Valve sleeve, 24, 24A to 24C...Cam follower, 25...Spring.

Claims

[Scope of utility model registration request]

a valve rotor that rotates integrally with a first shaft rotatably supported within a valve housing; and a second shaft that rotates integrally with a second shaft coaxially and rotatably connected to the first shaft by a predetermined amount. a valve sleeve disposed concentrically around the outer periphery of the power cylinder, and a switching valve mechanism provided between the valve sleeve and the valve rotor that can switch the supply/discharge flow path to each oil chamber of the power cylinder. In a power steering device equipped with a rotary valve type control valve that operates the switching valve mechanism by relative rotation to control the supply and discharge of hydraulic oil to each oil chamber of the power cylinder, A pair of cam followers are attached to the other of the two shafts, each of which has a pair of cam surfaces formed thereon, and which slides a predetermined amount radially outward of the other shaft by the action of each of the cam surfaces. is pressed against each of the cam surfaces by a spring, thereby connecting the two shafts, and applying hydraulic pressure to each of the cam followers that increases or decreases pressure depending on the vehicle speed to apply pressure to each of the cam surfaces of each of these cam followers. A power steering device characterized in that a pressing force increases according to vehicle speed.