公开(公告)号：US20160138622A1

公开(公告)日：2016-05-19

申请号：US14898152

申请日：2014-06-26

Applicant: KYB Corporation

Inventor： Yuzo MASUTA ,  Norio YUZAWA

IPC: F15B15/22 ,  F15B15/14

CPC classification number: F15B15/22 ,  B66F9/22 ,  F15B15/1457 ,  F15B15/149

Abstract: A fluid pressure cylinder includes: a piston rod; a cushioning chamber that decreases in capacity in accordance with extension of the fluid pressure cylinder; a communication passage that allows the cushioning chamber and an in-rod chamber to communicate with each other; a throttle passage that exerts a cushioning function by applying resistance to a flow of a working fluid from the cushioning chamber to the in-rod chamber; a check valve that is provided in a piston, allows the in-rod chamber and a driving chamber to communicate with each other, and has a checking function for permitting only a flow of the working fluid from the in-rod chamber to the driving chamber; and a pilot passage that is formed in the piston and disables the checking function by guiding a pressure in the cushioning chamber to the check valve as a pilot pressure.

Abstract translation: 流体压力缸包括：活塞杆; 缓冲室，其根据流体压力缸的延伸而减小容量; 连通通道，其允许缓冲室和杆内腔彼此连通; 节流通道，其通过对来自缓冲室的工作流体的流动施加阻力而施加缓冲功能; 设置在活塞中的止回阀允许杆内腔和驱动室彼此连通，并且具有检查功能，仅允许工作流体从杆内腔流到驱动室 ; 以及导向通道，其形成在活塞中并且通过将缓冲室中的压力引导到止回阀作为先导压力来禁止检查功能。