JPS6081361U

JPS6081361U - Rotary valve type control valve of power steering device

Info

Publication number: JPS6081361U
Application number: JP17333283U
Authority: JP
Inventors: 晃長谷川
Original assignee: トヨタ自動車株式会社
Priority date: 1983-11-09
Filing date: 1983-11-09
Publication date: 1985-06-05
Also published as: JPH0214535Y2

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図は本考案に係る制御弁の一例を示す縦断面図、第
２図は同制御弁におけるバルブスリーブの拡大縦断面図
、第３図は第２図の■−■線に沿う横断面図、第４図は
第２図のＩＶ−ＩＶ線に沿う横断面図、第５図は第２図
の■−■線に沿う横断面図、第６図は従来の制御弁にお
けるバルブスリーブの縦断面図である。符号の説明、１１・・・・・・バルブハウジング、１２
・・・・・・インプットシャフト、１３・・・・・・ピ
ニオンシャフト、２１・・・・・・バルブロータ、２２
・・・・・・バルブスリーブ、２２　ａ、　　２２ｂ”
”切換溝、２２ｃ、２２ｄ・・・・・・開口部、２４ａ
、２４ｂ・・・・・・シールリング、３１・・・・・・
パワーシリンダ、３１ａ、３１ｂ・・・・・・給排流路
。Fig. 1 is a longitudinal cross-sectional view showing an example of a control valve according to the present invention, Fig. 2 is an enlarged longitudinal cross-sectional view of a valve sleeve in the same control valve, and Fig. 3 is a cross-sectional view taken along the line ■-■ in Fig. 2. Figure 4 is a cross-sectional view taken along line IV-IV in Figure 2, Figure 5 is a cross-sectional view taken along line ■-■ in Figure 2, and Figure 6 is a cross-sectional view of a valve sleeve in a conventional control valve. FIG. Explanation of symbols, 11...Valve housing, 12
...Input shaft, 13...Pinion shaft, 21...Valve rotor, 22
...Valve sleeve, 22a, 22b"
"Switching groove, 22c, 22d...Opening, 24a
, 24b... Seal ring, 31...
Power cylinder, 31a, 31b... supply/discharge channel.

Claims

[Scope of utility model registration request]

a valve rotor that rotates integrally with a first shaft rotatably supported within the valve housing; and a second shaft that rotates integrally with a second shaft that is rotatably connected to the first shaft by a predetermined amount and rotates around the outer periphery of the valve rotor. A valve sleeve is arranged concentrically, and each oil chamber of the power cylinder is connected to two types of switching grooves formed between the valve sleeve and the valve spacer and provided in the axial direction on the inner circumference of the valve sleeve. A power steering device comprising a switching valve mechanism capable of switching each supply/discharge flow path, and controlling supply/discharge of hydraulic oil to each oil chamber of the power cylinder by operating the switching valve mechanism through relative rotation between the two shafts. In the rotary valve type control valve of the device, one of the switching grooves of the valve sleeve is provided with a predetermined length from one end opening to the other end opening on the inner circumference of the valve sleeve, and the other switching groove is A groove is provided on the inner periphery of the valve sleeve with a predetermined length from the other end opening to the one end opening side, and a seal ring is fitted to the both end openings of the valve sleeve to connect the inner periphery of these both end openings and the valve. A rotary valve type control valve for a power steering device, characterized in that the outer periphery of a rotor is liquid-tightly and rotatably sealed.