JPH045165U

JPH045165U -

Info

Publication number: JPH045165U
Application number: JP4559790U
Authority: JP
Priority date: 1990-04-27
Filing date: 1990-04-27
Publication date: 1992-01-17

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る制動液圧制御
装置を示す縦断面図、第２図は本考案の他の実施
例に係る制動液圧制御装置を示す縦断面図、第３
図は第２図の要部拡大縦断面図、第４図は従来の
制動液圧制御装置を示す縦断面図である。１……ハウジング、７……シリンダ、８……プ
ランジヤ、８ａ……弁体、９……シール部材、１
０……弁、１１……フランジ板、１２……ばね受
け、１３……圧縮ばね、１４……入力圧室、１５
……出力圧室、１６……入口ポート、１７……出
口ポート、１８……補助シリンダ、１９……シー
ル部材、２０……圧力室、２１……連通路、２２
……固定オリフイス、２３……拡径部。 FIG. 1 is a vertical cross-sectional view showing a brake hydraulic pressure control device according to an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view showing a brake hydraulic pressure control device according to another embodiment of the present invention, and FIG.
The figure is an enlarged vertical cross-sectional view of the main part of FIG. 2, and FIG. 4 is a vertical cross-sectional view showing a conventional brake hydraulic pressure control device. DESCRIPTION OF SYMBOLS 1... Housing, 7... Cylinder, 8... Plunger, 8a... Valve body, 9... Seal member, 1
0... Valve, 11... Flange plate, 12... Spring receiver, 13... Compression spring, 14... Input pressure chamber, 15
... Output pressure chamber, 16 ... Inlet port, 17 ... Outlet port, 18 ... Auxiliary cylinder, 19 ... Seal member, 20 ... Pressure chamber, 21 ... Communication path, 22
... Fixed orifice, 23 ... Expanded diameter part.

Claims

[Claims for Utility Model Registration] (1) A plunger is movably housed inside a housing having an inlet port connected to the rear system side of the tandem master cylinder and an outlet port connected to the rear wheel cylinder, and a valve body energized in a valve opening direction and disposed between the inlet port and the outlet port, and opening and closing of the valve body reduces the supply fluid pressure from the tandem master cylinder at a predetermined rate. A pressure chamber is provided near the tip of the plunger that introduces the hydraulic pressure supplied from the front system of the tandem master cylinder to the rear wheel cylinder, thereby causing the plunger to move in the valve closing direction in a normal state. In the brake hydraulic pressure control device, an orifice is provided in a communication path between the front system side of the tandem master cylinder and the pressure chamber, and the orifice allows oil to flow into the pressure chamber. A brake fluid pressure control device characterized by controlling. (2) With the operation of the plunger, the stroke until the tip of the plunger closes the communication path leading to the pressure chamber is set to be smaller than the stroke until the valve body closes. A brake hydraulic pressure control device according to claim (1) of the utility model registration, characterized in that it comprises an orifice.