公开(公告)号：US20130192940A1

公开(公告)日：2013-08-01

申请号：US13720282

申请日：2012-12-19

Applicant: SHOWA CORPORATION

Inventor： Kei FURUKAWA ,  Kazuya INOUE

IPC: F16F9/516

CPC classification number: F16F9/516 ,  F16F9/0218 ,  F16F9/346

Abstract: A tubular piston mounted at one end of a rod accommodated inside a cylinder and partitioning the space inside the cylinder includes first groove and second groove recessed from an outer circumferential surface thereof and aligned side by side along a centerline direction of the cylinder, and a communication passage communicating an end face on the side of an opening in the centerline direction of the cylinder with one of the two grooves (second groove) formed on the side of the opening. A rubber-made annular sealing member having an outer circumferential surface contacting an inner circumferential surface of the cylinder is fitted in the second groove. A resin-made restrictor ring that is a C-shaped member fitted in the first groove has an outer circumferential surface positioned closer to the inner circumferential surface of the cylinder than the outer circumferential surface of the piston.

Abstract translation: 安装在容纳在气缸内的杆的一端并且分隔气缸内的空间的管状活塞包括从其外周表面凹陷的第一凹槽和第二凹槽，并沿着圆柱体的中心线方向并排排列，并且连通 通道在开口的一侧形成的两个凹槽（第二凹槽）中的一个之间将气缸的中心线方向上的开口侧的端面连通。 具有与圆筒的内周面接触的外周面的橡胶制环状密封构件嵌合在第二槽中。 装配在第一槽中的C形构件的树脂制的限制环具有比活塞的外周面更靠近缸的内周面的外周面。