PROBLEM TO BE SOLVED: To provide an electric booster device capable of providing a jump-in characteristic, and capable of also increasing a regenerative braking quantity in regenerative cooperation braking, by realizing a natural pedal feeling.SOLUTION: An input piston 32 comprises a first input piston 33 having a tip part 37 facing to a primary chamber 16 and elastically held in a primary piston 10 by springs 72 and 73 and a second input piston 34 having a connection recessed part 50 and relatively movably fitted in the axial direction in a hole part 42 of the first input piston 33, and forms a jump-in clearance JC between a bottom part 33a of the first input piston 33 and a small diameter projection part 52 of the second input piston 34 by a retreat spring when a brake pedal is not operated. Thus, a natural pedal feeling is realized, and a jump-in characteristic can be provided, and a regenerative braking quantity can be increased in regenerative cooperation braking.

    【課題】自然なペダルフィーリングを実現させて、ジャンプイン特性を得ることができ、かつ、回生協調制動時に回生制動量を大きくすることができる電動倍力装置を提供する。【解決手段】入力ピストン32は、プライマリ室16に臨む先端部37を有しバネ72、73によりプライマリピストン10に弾性的に保持される第1入力ピストン33と、連結凹部50を有し、第1入力ピストン33の孔部42内に軸方向に相対移動可能に嵌合される第2入力ピストン34とを備え、ブレーキペダルの非操作時に後退バネにより第1入力ピストン33の底部33aと第2入力ピストン34の小径突設部52との間にジャンプインクリアランスJCを形成している。これにより、自然なペダルフィーリングを実現させて、ジャンプイン特性を得ることができ、かつ、回生協調制動時に回生制動量を大きくすることができる。【選択図】図3


    Access

    Download


    Export, share and cite



    Title :

    ELECTRIC BOOSTER DEVICE


    Additional title:

    電動倍力装置


    Contributors:
    SATO YUKI (author) / ENDO MITSUHIRO (author)

    Publication date :

    2015-11-09


    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



    ELECTRIC BOOSTER DEVICE AND BOOSTER DEVICE

    KOMIYAMA TSUYOSHI / SHIGETA HIROSHI / NOMURA DAICHI et al. | European Patent Office | 2019

    Free access

    ELECTRIC BOOSTER DEVICE

    MATSUURA RYO | European Patent Office | 2020

    Free access

    ELECTRIC BOOSTER DEVICE

    YOSHIZU RIKIYA / MIYAMA NORIHISA | European Patent Office | 2019

    Free access

    ELECTRIC BOOSTER DEVICE

    YOSHIZU RIKIYA / NOMURA DAICHI / SHIGETA HIROSHI | European Patent Office | 2019

    Free access

    ELECTRIC BOOSTER DEVICE

    GOTO DAISUKE / YAMAGUCHI TOMA | European Patent Office | 2015

    Free access