PROBLEM TO BE SOLVED: To provide a negative pressure type assistor, capable of reducing noise which is generated when stepping down of a brake pedal which is being stepped down, is released, without increasing cost and reducing productivity.SOLUTION: A valve body 41 of a negative pressure type assistor comprises: a movement stop part 41c which is integrated to any one of a fitting part 41a and a movable part 41b, and which relatively stops the movable part 41b which moves with movement of a plunger 32, with respect to a valve body 22, at a time point after an input operation to an input shaft 31 is released, and at a time point before a contact time point when a key member 39 moving with movement of the plunger 32 and the valve body 22 contact each other.SELECTED DRAWING: Figure 1

    【課題】負圧式倍力装置において、生産性の低下やコスト高を招くことなく、踏み込まれているブレーキペダルの踏み込みが解除された際に発生する音を低減する。【解決手段】負圧式倍力装置の弁体41は、取付部41aおよび可動部41bの何れか一方に一体的に設けられ、かつ、入力軸31に対する入力操作が解除された時点以降において、プランジャ32の移動とともに移動するキー部材39とバルブボディ22とが当接する当接時点より以前に、プランジャ32の移動とともに移動する可動部41bをバルブボディ22に対して相対的に停止させる移動停止部41cを備えている。【選択図】図1


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    Title :

    NEGATIVE PRESSURE TYPE ASSISTOR


    Additional title:

    負圧式倍力装置


    Contributors:
    GOTO YUJI (author)

    Publication date :

    2016-07-07


    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 / F16F SPRINGS , Federn



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