JPH0266361U

JPH0266361U -

Info

Publication number: JPH0266361U
Application number: JP14785788U
Authority: JP
Priority date: 1988-11-10
Filing date: 1988-11-10
Publication date: 1990-05-18

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す概略構成図、
第２図は同要部拡大図、第３図は第１図及び第２
図に示したレギユレータ弁の調圧特性を示す図で
ある。１２……マスタシリンダ、１６……ブレーキ液
圧回路、１８……ホイールシリンダ、２０……液
圧ポンプ、２１……パワーステアリングギヤ、２
２……レギユレータ弁、２３……アクチユエータ
、２５……ブレーキ液圧調整ピストン、２６……
カツト弁、２７……パワー液圧給排弁、２８……
バイパス弁、４３……リリーフ弁、４８Ａ……第
１ボデイ、４８Ｂ……第２ボデイ、４８ａ……流
入口、４８ｂ……流出口、４８ｃ……内孔、４８
ｄ……ポート、４８ｅ……孔、４９……ピストン
、４９ａ……第１ピストン、４９ｂ……第２ピス
トン、５０……ホルダ、５０ａ……ガイド孔、５
０ｃ……オリフイス、５１……弁体、５１ａ……
中央孔、５１ｂ……小径の環状突起部、５１ｃ…
…大径の環状突起部、５２……スプリング、５３
……スナツプリング、５４……液室、５５……液
室、５６……シム、５７……液室。 FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
Figure 2 is an enlarged view of the same main part, Figure 3 is a diagram of Figures 1 and 2.
It is a figure which shows the pressure regulation characteristic of the regulator valve shown in the figure. 12... Master cylinder, 16... Brake hydraulic circuit, 18... Wheel cylinder, 20... Hydraulic pump, 21... Power steering gear, 2
2... Regulator valve, 23... Actuator, 25... Brake fluid pressure adjustment piston, 26...
Cut valve, 27... Power hydraulic supply/drain valve, 28...
Bypass valve, 43...Relief valve, 48A...First body, 48B...Second body, 48a...Inflow port, 48b...Outflow port, 48c...Inner hole, 48
d... Port, 48e... Hole, 49... Piston, 49a... First piston, 49b... Second piston, 50... Holder, 50a... Guide hole, 5
0c... Orifice, 51... Valve body, 51a...
Central hole, 51b...Small diameter annular protrusion, 51c...
...Large diameter annular protrusion, 52...Spring, 53
...Snat spring, 54...Liquid chamber, 55...Liquid chamber, 56...Shim, 57...Liquid chamber.

Claims

[Scope of utility model registration request]

A brake fluid pressure adjusting piston is provided in the brake fluid pressure circuit extending from the master cylinder to the wheel cylinder and reciprocates to increase or decrease the volume of the brake fluid pressure circuit by the brake fluid pressure and power fluid pressure acting on both ends of the piston, respectively. a cut valve that is provided in the brake fluid pressure circuit extending from the brake fluid pressure adjustment piston to the master cylinder and is closed when the brake fluid pressure adjustment piston reciprocates; and a cut valve that is driven by the engine and supplies the brake fluid pressure to the brake fluid pressure adjustment piston. a hydraulic pump that generates power hydraulic pressure and supplies the power hydraulic pressure to the power steering gear; and a hydraulic pump that supplies the power hydraulic pressure to the power steering gear according to the hydraulic pressure of the master cylinder. A regulator valve that adjusts the pressure to a value according to the master cylinder hydraulic pressure by controlling supply to the gear, and a power hydraulic pressure regulated by the regulator valve that adjusts the brake hydraulic pressure according to the skid state of the vehicle. A power hydraulic pressure supply/discharge valve that supplies and discharges the piston, and the power hydraulic pressure regulated by the regulator valve is lower than a set value for the hydraulic pressure of the master cylinder, and the master cylinder and the wheel cylinder are operated. In the anti-skid device for a vehicle, the regulator valve is connected to an inlet communicating with the other end of the hydraulic pump and the brake fluid pressure adjusting piston, and a bypass valve that communicates with the power steering without going through the cut valve. a first body having an inner hole through which an outlet communicating with a gear opens; a second body coupled to the first body having a hole through which a port communicating with the master cylinder opens; The opening of the inner hole is provided with a guide hole that is slidably fitted in a liquid-tight manner into the inner hole of the first body, and is fitted in the vicinity of the opening of the inner hole. a support member whose movement toward the part side is regulated;
The inner hole has a large diameter annular protrusion which is accommodated in the inner hole of the body and can come into contact with the bottom of the inner hole on the concentric circle of the central hole on the bottom side end surface of the inner hole. A valve body having a small diameter annular protrusion, a spring installed with a predetermined preload between the valve body and the support member, and a liquid in the guide hole of the support member and the hole of the second body. It is tightly fitted to be slidable in the axial direction, receives the hydraulic pressure of the master cylinder at one end, receives the power hydraulic pressure at the other end, and moves in the axial direction, and the other end receives the small diameter of the valve body. A first liquid chamber that can be brought into contact with the annular protrusion and that increases or decreases in volume by moving in the axial direction is formed between the step part of the guide hole and directly communicates with the outlet in the inner hole. a piston forming a second liquid chamber; an orifice formed in the support member to communicate the first liquid chamber and the second liquid chamber; An anti-skid device for a vehicle, comprising a shim interposed between two bodies and capable of adjusting the amount of movement of the piston.