公开(公告)号：US3856287A

公开(公告)日：1974-12-24

申请号：US37176873

申请日：1973-06-20

Applicant: STABILUS GMBH

Inventor： FREITAG H

IPC: F16F9/36 ,  F16J15/3204 ,  F16J15/3216 ,  F16J15/48 ,  F16F5/00

CPC classification number: F16J15/48 ,  F16F9/365 ,  F16J15/3204 ,  F16J15/3216

Abstract: In a pneumatic spring of adjustable length, the piston rod is sealed to the cylinder by an annular sealing disc stressed in compression between the inner cylinder wall and a rigid, tubular projection on the radial end wall of the cylinder through which the piston rod extends outward of the cylinder cavity. The sealing disc is axially longer than the projection so that it extends inward of the cavity beyond the projection and carries an annular sealing lip engaging the piston rod only under the fluid pressure in the cylinder cavity, but practically fully relieved by the annular projection from the compressive stresses.

Abstract translation: 在可调节长度的气动弹簧中，活塞杆通过环形密封盘而被密封，该环形密封盘在内筒壁与圆筒的径向端壁上的刚性的管状突起之间受压缩应力，活塞杆向外延伸 的气缸腔。 密封盘的轴向长度比突出部长，使得其在空腔的内侧延伸超过突出部，并且仅在气缸腔中的流体压力下承载与活塞杆接合的环形密封唇，但实际上完全由环形突起 压应力。