密封部件(45)具有能够抵接于周槽(32)的缸开口侧的周壁(89)的基体部(101)、从基体部(101)朝向缸底侧延伸突出并与活塞(18)的外周滑动接触的内周唇部(102)、以及从基体部(101)朝向缸底侧延伸突出并抵接于周槽(32)的槽底(88)的外周唇部(103)。周槽(32)具有从槽底(88)的缸底侧的端部朝向径向内侧以越向径向内侧越位于缸底侧的方式倾斜地延伸突出的倾斜部(91)。在缸主体(15),形成有在倾斜部(91)开口且从周槽(32)朝向缸底侧延伸的槽(51)。

    A seal member (45) has: a base (101) which is capable of coming into contact with the cylinder opening-side circumferential wall (89) of a circumferential groove (32); an inner circumferential lip (102) extending toward the cylinder bottom side from the base (101) and in sliding contact with the outer periphery of a piston (18); and an outer circumferential lip (103) extending toward the cylinder bottom side from the base (101) and in contact with the groove bottom (88) of the circumferential groove (32). The circumferential groove (32) has a sloped section (91) which slopes and extends from the cylinder bottom-side end of the groove bottom (88) so that the sloped section (91) comes closer to the cylinder bottom side as the sloped section (91) extends radially inward. A cylinder body (15) has formed therein a groove (51) which is open to the sloped section (91) and which extends from the circumferential groove (32) toward the cylinder bottom side.


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    Title :

    主缸


    Publication date :

    2022-06-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F16J Kolben , PISTONS