To provide a vehicular brake device which can inhibit leakage of a fluid in a reservoir when a liquid passage is damaged and inhibits a brake force from being generated by expansion of the fluid when a vehicle is not braked.SOLUTION: The vehicular brake device includes: a reservoir connection port 211 which is formed at a cylinder 21 and connects an output chamber 24 with a reservoir 45; and a switch part 9 which switches a state of a vehicular brake device between a first state in which flow of a fluid from the reservoir 45 to the output chamber 24 through the reservoir connection port 211 is allowed, a second state in which flow of the fluid from the reservoir 45 to the output chamber 24 through the reservoir connection port 211 and flow of the fluid from the output chamber 24 to the reservoir 45 through the reservoir connection port 211 are blocked, and a third state in which flow of the fluid from the output chamber 24 to the reservoir 45 is allowed according to a liquid pressure in the output chamber 24 with flow of the fluid from the reservoir 45 to the output chamber 24 through the reservoir connection port 211 blocked.SELECTED DRAWING: Figure 1

    【課題】液路が破損した際のリザーバ内のフルード漏れを抑制でき、且つ非制動時におけるフルード膨張による制動力の発生を抑制することができる車両用制動装置を提供する。【解決手段】本発明は、シリンダ21に形成された、出力室24とリザーバ45とを接続するリザーバ接続ポート211と、リザーバ接続ポート211を介するリザーバ45から出力室24へのフルードの流れを許容する第1状態と、リザーバ接続ポート211を介するリザーバ45から出力室24へのフルードの流れとリザーバ接続ポート211を介する出力室24からリザーバ45へのフルードの流れとを遮断する第2状態と、リザーバ接続ポート211を介するリザーバ45から出力室24へのフルードの流れを遮断しつつ、出力室24内の液圧に応じて出力室24からリザーバ45へのフルードの流れを許容する第3状態とを切り替える切替部9と、を備える。【選択図】図1


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    Title :

    VEHICULAR BRAKE DEVICE


    Additional title:

    車両用制動装置


    Contributors:

    Publication date :

    2022-04-04


    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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