公开(公告)号：US20180259026A1

公开(公告)日：2018-09-13

申请号：US15760828

申请日：2016-09-16

申请人： NIFCO INC.

发明人： Kei SHIMOZAKI

IPC分类号： F16F9/02 ,  F16F9/348

CPC分类号： F16F9/0227 ,  E05F5/10 ,  F16F9/02 ,  F16F9/0218 ,  F16F9/32 ,  F16F9/34 ,  F16F9/3405 ,  F16F9/3481 ,  F16F9/368 ,  F16F2230/30 ,  F16J15/18 ,  F16J15/3204

摘要： A damper includes a piston and a cylinder housing the piston, and generates a braking force based on a movement or relative movement of the piston. The piston includes a trunk portion and a seal ring surrounding the trunk portion. A first seal portion against an inner wall of the cylinder is formed on an outer peripheral portion in the seal ring, and a second seal portion against a circumference wall portion projecting from the trunk portion is formed in a front end portion positioned on a pressure chamber side. Also, a support rib portion is provided outside the trunk portion, which allows the seal ring to move within a predetermined range along a moving direction of the piston in a state wherein a movement gap for a fluid is formed between the trunk portion and an inner peripheral portion of the seal ring.