To provide a liquid pressure brake device capable of improving intensity of a master piston to pressing force from an output shaft member, regardless of a material of a master piston.SOLUTION: In the present invention, a master piston 32 comprises a master input part 4 which is provided on a position facing an output shaft member 21 and receives pressing force of the output shaft member 21, and tension intensity of the master input part 4 is smaller than that of the output shaft member 21. The master input part 4 comprises: a contact part 41 contacting the output shaft member 21 on a part except for a part on a center axis Z of the master piston 32. The contact part 41 receives force in a direction approaching the center axis Z, the force being applied by pressing force of the output shaft member 21, and the contact part 41 is arranged so that a compression load is applied to a center part 42 of the master input part 4 including therein, the center axis Z, by the pressing force of the output shaft member 21.SELECTED DRAWING: Figure 3

    【課題】マスタピストンの材料によらず、出力軸部材からの押圧力に対するマスタピストンの強度を向上させることができる液圧制動装置を提供する。【解決手段】本発明において、マスタピストン32には、出力軸部材21に対向する位置に、出力軸部材21の押圧力を受けるマスタ入力部4が形成され、マスタ入力部4の引張強度は、出力軸部材21の引張強度よりも小さく、マスタ入力部4は、マスタピストン32の中心軸Z上を除く部分に、出力軸部材21に接触する接触部41を備え、接触部41には、出力軸部材21の押圧力により、中心軸Zに接近する方向への力が加わり、接触部41は、出力軸部材21の押圧力により、中心軸Zを内部に含むマスタ入力部4の中央部分42に圧縮負荷が加わるように配置されている。【選択図】図3


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    Title :

    LIQUID PRESSURE BRAKE DEVICE


    Additional title:

    液圧制動装置


    Contributors:
    INOUE YOJI (author) / MITA YOSUKE (author)

    Publication date :

    2021-06-03


    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



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