公开(公告)号：US20090032366A1

公开(公告)日：2009-02-05

申请号：US12184654

申请日：2008-08-01

申请人： Kiichiro GOTO

发明人： Kiichiro GOTO

IPC分类号： F16D25/0635

CPC分类号： F16D25/12 ,  F16D2048/0212 ,  F16J1/008

摘要： To satisfy sealing ability and separation load between a seal ring and a piston main body 1, a piston 100 for an automatic transmission comprises a piston main body 1 and a seal ring 2 fitted thereto, the seal ring 2 integrally has a seal main body 22 of a rubber-like elastic material and a metal ring 21 comprising a fitting cylinder portion 211 fitted to a cylindrical portion 12 of the piston main body 1, an enlarged diameter portion 212 formed adjacently thereto, and a flange portion 213 opposed to a pressure receiving portion 11 of the piston main body 1, and the seal main body 22 comprises a seal lip 221 slidably contacted with a inner surface of a clutch cylinder 3, and a compression seal portion 224 provided on an inner periphery of the enlarged diameter portion 212 to be compressed with the cylindrical portion 12.

摘要翻译： 为了满足密封环和活塞主体1之间的密封能力和分离负荷，用于自动变速器的活塞100包括活塞主体1和安装在其上的密封环2，密封环2一体地具有密封主体22 橡胶状弹性材料和金属环21，金属环21包括嵌合在活塞主体1的圆筒部12上的嵌合筒部211，与其邻接形成的扩径部212和与压力接收相对的凸缘部213 活塞主体1的部分11，密封主体22包括与离合器缸3的内表面可滑动接触的密封唇221和设置在扩大直径部分212的内周上的压缩密封部分224 用圆柱形部分12压缩。