发明申请
- 专利标题: Plunger Seal for Pump
- 专利标题(中): 泵柱塞密封
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申请号: US11578365申请日: 2005-03-22
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公开(公告)号: US20070222157A1公开(公告)日: 2007-09-27
- 发明人: Yosuke Kondo , Yasuaki Tanabe , Katsutoshi Ishioka , Sosuke Ito , Shinji Nagasawa , Junichi Nakayama , Masatoshi Okada
- 申请人: Yosuke Kondo , Yasuaki Tanabe , Katsutoshi Ishioka , Sosuke Ito , Shinji Nagasawa , Junichi Nakayama , Masatoshi Okada
- 优先权: JP2004-117548 20040413; JP2004-121249 20040416; JP2004-141041 20040511
- 国际申请: PCT/JP05/05084 WO 20050322
- 主分类号: F04B53/02
- IPC分类号: F04B53/02
摘要:
There is provided a plunger seal (1) for a fuel injection pump for a direct-injection gasoline engine, in which, even if a resin material is used for a fuel seal member (12), the plunger seal can be made compact, sealing ability is increased, and assembling man-hours can be reduced, and in which set sealing performance can be achieved when a U-shaped elastic member (33) for applying an energizing force in a diametrical direction is used in a groove (41) formed in the fuel seal member (12). The resin fuel seal member (12) and an oil seal member (13) are assembled to form one seal system. Further, when the U-shaped elastic member (33) is installed in the groove (41), an axial position (L1) of an end surface (44a) at the side opposite to the sealed object of a fixing collar (44) formed on an inner peripheral surface of the groove (41) is positioned at the side (B) opposite to the sealed object than the axial position (L2) of a leading end portion (15b) of a seal lip (15) of the fuel seal member (12).
公开/授权文献
- US07513506B2 Plunger seal for pump 公开/授权日:2009-04-07