PROBLEM TO BE SOLVED: To provide a seal stopper structure in a negative pressure booster, in which a valve cylinder is pivotally supported in a state that it can slide, to a guide cylinder part via a bearing bush and seal member, and the seal stopper regulates axial movement of the bearing bush and seal member in cooperation with an annular step part of the guide cylinder part has one surface of a metal seal stopper main body covered with a rubber, and plural engaging claw parts for making a tip end part bite an inner periphery of the guide cylinder part in a resilient state, capable of avoiding sticking of stacked seal stoppers, and facilitating taking out of the seal stopper individually, for achieving improvement of assembly.SOLUTION: At least one separation support part 27 for mutually separating engaging claw parts 24b of adjacent seal stoppers 24 by contacting the adjacent seal stopper 24, in a state that the plural seal stoppers 24 are mutually stacked, is provided on the seal stoppers 24.

    【課題】案内筒部に軸受ブッシュおよびシール部材を介して弁筒が摺動自在に支承され、案内筒部の環状段部と協働して軸受ブッシュおよびシール部材の軸方向移動を規制するシールストッパが、金属製のシールストッパ主体の一面がゴムで覆われて成るとともに先端部を案内筒部の内周に弾発的に食い込ませる複数の係合爪部を有するように形成される負圧ブースタにおいて、積層状態にあるシールストッパが相互に張りつくことを回避して、シールストッパを個別に掴みだすことを容易として組立性の向上を図る。【解決手段】複数のシールストッパ24を相互に重ねた状態で隣接するシールストッパ24に接触して隣接相互のシールストッパ24の係合爪部24bを相互に離間させる少なくとも1つの離間支持部27が、シールストッパ24に設けられる。【選択図】 図4


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    Title :

    SEAL STOPPER STRUCTURE IN NEGATIVE PRESSURE BOOSTER


    Additional title:

    負圧ブースタにおけるシールストッパ構造


    Contributors:

    Publication date :

    2015-08-20


    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 / F16J Kolben , PISTONS



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