JPH0290182U

JPH0290182U -

Info

Publication number: JPH0290182U
Application number: JP17019088U
Authority: JP
Priority date: 1988-12-28
Filing date: 1988-12-28
Publication date: 1990-07-17

Description

[Brief explanation of drawings]

第１図は本考案の一実施例にかかる配管系統お
よびアクチユエータの一部断面図、第２図は本考
案による制動特性を示すグラフである。２…マスターシリンダ、３…ホイールシリンダ
、４…主液通路、５，７…電磁切替弁、６…減圧
通路、８…リザーバタンク、１０…ポンプ、１１
…アキユムレータ、１２…戻し通路、１３…第１
チエツクバルブ、１４…可変絞り、１５…第２チ
エツクバルブ、３２…筒状ピストン、３２Ａ…第
１の半径方向孔、３２Ｂ…第２の半径方向孔、３
４_１…第１の軸体、３４_２…第２の軸体、３４Ａ
…第１の軸方向孔、３４Ｂ…第１の半径方向孔、
３４Ｄ…第２の半径方向孔、３４Ｅ…第２の軸方
向孔、３４Ｆ…環状絞り。 FIG. 1 is a partial sectional view of a piping system and actuator according to an embodiment of the present invention, and FIG. 2 is a graph showing braking characteristics according to the present invention. 2...Master cylinder, 3...Wheel cylinder, 4...Main liquid passage, 5, 7...Solenoid switching valve, 6...Reducing pressure passage, 8...Reservoir tank, 10...Pump, 11
...accumulator, 12...return passage, 13...first
Check valve, 14... Variable throttle, 15... Second check valve, 32... Cylindrical piston, 32A... First radial hole, 32B... Second radial hole, 3
4 ₁ ...first shaft body, 34 ₂ ...second shaft body, 34A
...first axial hole, 34B...first radial hole,
34D...Second radial hole, 34E...Second axial hole, 34F...Annular diaphragm.

Claims

[Claims for Utility Model Registration] A switching valve that is provided in the middle of a main fluid passage that communicates between a master cylinder and a wheel cylinder, and switches the wheel cylinder to communicate with the master cylinder or the reservoir tank, and the reservoir tank and the reservoir tank. a pump provided in a return passage communicating with the upstream side of the switching valve in the main liquid passage and returning the liquid in the reservoir tank to the main liquid passage side; an accumulator provided in the return passage to store liquid discharged from the pump; a first check valve which is a return passage and is provided between the accumulator and the main liquid passage and prevents flow from the main liquid passage side to the accumulator; A variable throttle that is provided upstream of the check valve and whose throttle amount changes according to the movement of the piston of the accumulator; and a second throttle that is parallel to the variable throttle and that allows flow only from the main liquid passage to the return passage. An anti-skid brake device characterized by comprising a check valve and a check valve.