JPS6246269U

JPS6246269U -

Info

Publication number: JPS6246269U
Application number: JP13897685U
Authority: JP
Priority date: 1985-09-11
Filing date: 1985-09-11
Publication date: 1987-03-20

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の概略構成図、第２図
は固定絞り部の拡大断面図、第３図は可変絞り部
分の拡大断面図である。２０……制御バルブ、３０……バルブスプール
、４０……連通路、４２……通路、４３……固定
絞り、５０，５０Ａ，５０Ｂ……反力室、６０…
…段付通口、６２……小径部、６３……大径部、
６５……アジヤスタ、６６……ロツド部、６８…
…螺旋溝、７０……電磁ソレノイド、７２……自
動可変絞り、８０……ポンプ、８２……オイルタ
ンク、８４……コントローラ（制御機構）、８８
……車速センサ。 FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, FIG. 2 is an enlarged sectional view of a fixed diaphragm portion, and FIG. 3 is an enlarged sectional view of a variable diaphragm portion. 20... Control valve, 30... Valve spool, 40... Communication passage, 42... Passage, 43... Fixed throttle, 50, 50A, 50B... Reaction force chamber, 60...
...Stepped port, 62...Small diameter part, 63...Large diameter part,
65...Adjuster, 66...Rod part, 68...
...Spiral groove, 70...Electromagnetic solenoid, 72...Automatic variable throttle, 80...Pump, 82...Oil tank, 84...Controller (control mechanism), 88
...Vehicle speed sensor.

Claims

[Scope of utility model registration request]

A reaction chamber is formed at both ends of the valve spool of the control valve, a passage is provided in this pressure chamber to guide high pressure from the hydraulic source through a fixed throttle, and a passage is provided to release pressure oil from this reaction chamber to the tank side. is equipped with an automatic variable aperture,
In addition, the fixed aperture and variable aperture have substantially the same structure as the choke structure, and a control mechanism is provided to increase or decrease the opening degree of the automatic variable aperture according to the vehicle speed. A steering reaction force adjustment device for power steering configured to reduce the pressure and increase the hydraulic reaction force, characterized in that the fixed throttle is constructed by inserting a column having a spiral groove on its outer periphery into a passage. Steering reaction force adjustment device.