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2. 发明公开

EP2487082A1 Vehicle hydraulic master cylinder and method of forming a seal groove therein 有权转让
标题翻译：车辆液压制动主缸和用于主制动缸中产生的槽的方法
公开(公告)号：EP2487082A1
公开(公告)日：2012-08-15
申请号：EP12154855.6
申请日：2012-02-10
申请人： Nissin Kogyo Co., Ltd.
发明人： Hatakoshi, Genichi , Sakai, Go , Ishiguro, Junpei , Hanaoka, Mitsuhiro , Kobayashi, Norihiro
IPC分类号： B60T11/16
CPC分类号： B60T11/165 , B60T11/236
摘要： According to an aspect of the present invention, there is provided a vehicle hydraulic master cylinder comprising; a bottomed cylinder hole having an annular seal groove; a cup seal fitted into the seal groove; and a concave-shaped plunger slidably inserted into the cylinder hole via the cup seal (11), the seal groove comprising: a seal groove bottom surface (13a) extended along a circumferential direction of the cylinder hole; a cylinder hole bottom-side surface (13b); and a cylinder hole opening-side surface (13c), the cup seal comprising; a base portion (11a) at the cylinder hole opening side; an inner peripheral lip portion (11b) that extends toward the cylinder hole bottom side from the base portion to slide along an outer peripheral surface of the plunger; and an outer peripheral lip portion (11c) that extends toward the cylinder hole bottom side from the base portion to abut against the seal groove bottom surface, wherein the seal groove further comprises a chamfered region (13g) formed by chamfering a radial inner region of the cylinder hole opening-side surface, wherein the cup seal further comprises an elastic protrusive piece (11d) protruded from the inner peripheral lip portion to abut against the cylinder hole bottom-side surface, and a contact pressure adjustment surface (11g) formed at a radial inner region of the base portion, and wherein, at the time of non-operation, a starting point of the contact pressure adjustment surface and a starting point of the chamfered region are located outwardly of a tip abutment point of the elastic protrusive piece against the cylinder hole bottom-side surface.
摘要翻译：。根据在本发明的一个方面，提供了一种车辆的油压主缸，其包括：具有环状的密封槽的有底筒孔; 一个杯形密封件装配到密封槽; 和一个凹状的柱塞可滑动地插入通过所述杯形密封件（11）的缸孔，所述密封槽包括：沿着汽缸孔的圆周方向延伸的密封槽底面（13a）; 汽缸孔底侧表面（13B）; 和气缸孔开口侧的表面（13C），所述杯形密封件包括：在气缸孔开口侧的基部（11a）中; 孔中内周唇部（11b）的没有朝向从基部沿着所述柱塞的外周面滑动，所述气缸底侧延伸; 孔和外周唇部（11c）的那样朝向从基部缸底侧延伸到抵靠所述密封槽底面，worin密封槽进一步包括由倒角的径向内侧的区域形成的倒角区域（13克）缸体孔开口侧表面，worin杯形密封件进一步包括到达弹性突片（11D）从内周唇部突出抵靠气缸底侧表面和接触压力调节表面（11克）在FORMED 基部的径向内侧的区域，并worin，在非操作时，接触压力调节表面的起始点和倒角区域的起点位于弹性突片的顶端邻接点向外相对于气缸孔底部侧的表面。

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