JPS6316970U

JPS6316970U -

Info

Publication number: JPS6316970U
Application number: JP11173386U
Authority: JP
Priority date: 1986-07-21
Filing date: 1986-07-21
Publication date: 1988-02-04

Description

[Brief explanation of the drawing]

第１図は本考案が適用された荷重感知型ブレー
キ液圧制御弁装置の要部断面図および回路図であ
る。第２図は第１図の要部を拡大して示す図であ
つて、ＬＳＰＶの作動を説明するための図である
。第３図は第１図の制御弁装置の作動を説明する
ための図である。１０：マスタシリンダ、２２：ＬＳＰＶ、３０
：車体、３２：ハウジング本体、４０：スプール
弁子、４２：外側スリーブ、６０：シリンダ、６
４：ピストン、６６：圧力室、７０：ロツド、７
４：防振ゴム、８６：シリンダ、９６：ピストン
、９８：ピストンロツド、１００：圧力室。 FIG. 1 is a sectional view and a circuit diagram of a main part of a load sensing type brake fluid pressure control valve device to which the present invention is applied. FIG. 2 is an enlarged view of the main part of FIG. 1, and is a diagram for explaining the operation of the LSPV. FIG. 3 is a diagram for explaining the operation of the control valve device shown in FIG. 1. 10: Master cylinder, 22: LSPV, 30
: Vehicle body, 32: Housing body, 40: Spool valve, 42: Outer sleeve, 60: Cylinder, 6
4: Piston, 66: Pressure chamber, 70: Rod, 7
4: Anti-vibration rubber, 86: Cylinder, 96: Piston, 98: Piston rod, 100: Pressure chamber.

Claims

[Claims for Utility Model Registration] In a vehicle equipped with a suspension strut whose lower end is fixed to an unsprung member and whose upper end is fixed to an unsprung member via an annular vibration isolator, A valve housing is provided between the rear brake and the valve housing, and when the input hydraulic pressure from the master cylinder reaches a predetermined pressure, it is positioned to the operating side and then applied to the rear brake. and a spool valve that suppresses an increase in the output hydraulic pressure to a ratio smaller than the increase in the input hydraulic pressure, and by biasing the spool valve toward the non-operating side as the carrying load of the vehicle increases. , a load-sensing brake fluid pressure control valve device of a type that increases the predetermined pressure in accordance with an increase in the live load, the upper end of the suspension strut and the spring increasing in accordance with the increase in the live load; A load having a first piston member that is actuated in response to the amount of relative displacement between the load and the upper member, and a first pressure chamber whose pressure is increased in response to the actuation of the piston member as the live load increases. a sensing cylinder; a second pressure chamber fixed to the valve housing and communicating with the first pressure chamber; and as pressure in the second pressure chamber increases, the spool valve element is adjusted to a size corresponding to the load. and a second piston member that is driven toward the non-operating side by a biasing force of the load sensing type brake fluid pressure control valve device.