PROBLEM TO BE SOLVED: To provide a vehicular brake fluid pressure control device in which a suction chamber which allows brake fluid from a reservoir to flow thereinto and communicates with a suction side of a fluid pressure pump is formed in a body, a suction valve is provided between a master cylinder and the suction chamber, and an intermediate piston, which is engaged slidably with a cylinder hole and interposed between the suction valve and a reservoir piston, closes the suction valve according to output of fluid pressure from the master cylinder in a non-operated state of the fluid pressure pump and opens the suction valve according to decrease in fluid pressure of the suction chamber and reduction of volume of a reservoir chamber accompanying operation of the fluid pressure pump, which absorbs fluid pressure pulsation of the suction chamber communicating with the suction side of fluid pressure pump with a simple structure.SOLUTION: Seal means 76 that absorbs fluid pressure pulsation of a suction chamber 25 accompanying operation of a fluid pressure pump 23A is provided between an outer periphery of an intermediate piston 57 and an inner periphery of a cylinder hole 56 while sealing a space between the suction chamber 25 and a reservoir chamber 26.SELECTED DRAWING: Figure 4

    【課題】リザーバからのブレーキ液の流入を可能として液圧ポンプの吸入側に連通する吸入室がボディ内に形成され、マスタシリンダおよび吸入室間にサクション弁が介設され、シリンダ孔に摺動可能に嵌合されつつサクション弁およびリザーバピストン間に介装される中間ピストンが、液圧ポンプの非作動状態でのマスタシリンダからの液圧出力に応じてサクション弁を閉弁し、液圧ポンプの作動に伴う吸入室の液圧低下およびリザーバ室の容積縮小に応じてサクション弁を開弁するようにした車両用ブレーキ液圧制御装置において、液圧ポンプの吸入側に通じる吸入室の液圧脈動を簡単な構成で吸収する。【解決手段】液圧ポンプ23Aの作動に伴う吸入室25の液圧脈動を吸収するシール手段76が、吸入室25およびリザーバ室26間をシールするようにして中間ピストン57の外周およびシリンダ孔56の内周間に設けられる。【選択図】 図4


    Access

    Download


    Export, share and cite



    Title :

    VEHICULAR BRAKE FLUID PRESSURE CONTROL DEVICE


    Additional title:

    車両用ブレーキ液圧制御装置


    Contributors:

    Publication date :

    2016-07-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF




    VEHICULAR BRAKE FLUID PRESSURE CONTROL DEVICE

    SHIMONO TAKUHIRO / SHIGETA MASAYA | European Patent Office | 2015

    Free access


    VEHICULAR BRAKE FLUID PRESSURE CONTROL DEVICE

    CHIBA KENTARO / KODAMA TAKURO | European Patent Office | 2018

    Free access

    VEHICULAR BRAKE FLUID PRESSURE CONTROL DEVICE

    HIROSE TOMONORI | European Patent Office | 2017

    Free access