公开(公告)号：US20080280711A1

公开(公告)日：2008-11-13

申请号：US10582087

申请日：2004-12-20

申请人： Seiji Sato ,  Izutsu Tomoyoshi ,  Satoshi Kitano ,  Hisashi Hayakawa

发明人： Seiji Sato ,  Izutsu Tomoyoshi ,  Satoshi Kitano ,  Hisashi Hayakawa

IPC分类号： F16H7/08

CPC分类号： F16H7/0836 ,  F16H2007/0812 ,  F16H2007/0846 ,  F16H2007/0853 ,  F16H2007/0855 ,  F16H2007/0859

摘要： A chain tensioner is provided which can prevent separation of the plunger.In a cylinder chamber 12 of the housing 11, a plunger 13 and a spring 15 that biases the plunger 13 outwardly are mounted. The housing 11 is provided with an oil supply passage 17 communicating with a pressure chamber 16 formed in the cylinder chamber behind the plunger 13. A ring fitting groove 30 is formed in the outer periphery of the plunger 13 near its rear end. An elastic ring 31 is received in the ring fitting groove 30 in a radially compressed state. An engaging groove 32 is formed in the inner periphery of the cylinder 12 near its open end. By engaging the elastic ring 31 partially in the engaging groove 32 and partially in the ring fitting groove 30, it is possible to prevent separation of the plunger 13.

摘要翻译： 提供了可以防止柱塞分离的链条张紧器。 在壳体11的气缸室12中，安装有将柱塞13向外偏压的柱塞13和弹簧15。 壳体11设置有与形成在柱塞13后面的气缸室中的压力室16连通的供油通道17。 在其后端附近的柱塞13的外周形成环形配合槽30。 弹性环31以径向压缩状态容纳在环形装配槽30中。 接合槽32形成在气缸12的内周的靠近其开口端。 通过将弹性环31部分地接合在接合槽32中并且部分地接合在环形装配槽30中，可以防止柱塞13的分离。