To provide a buffer that can restrain occurrence of unusual noise while restraining a decrease in a damping force.SOLUTION: A buffer comprises: a first passage 81 through which a working fluid is made to flow out to a reservoir chamber 18 from a second chamber 62 by movement of a piston; a first damping force generation mechanism 95 provided in the first passage 81, and generating a damping force; an isolated chamber 143 provided in the second chamber 62 that is one of a first chamber and the second chamber 62, and capable of communicating with the second chamber 62 via communication passages 155a and 165a; and an expansion/contraction member 180 provided in the isolated chamber 143, capable of being expanded/contracted by a pressure in the second chamber 62, and blocking communication between the communication passages 155a and 165a and the isolated chamber 143 when the pressure in the second chamber 62 is lower than a first predetermined pressure value.SELECTED DRAWING: Figure 2
【課題】減衰力の低下を抑制しつつ異音の発生を抑制することができる緩衝器を提供する。【解決手段】ピストンの移動により作動流体が第2室62からリザーバ室18に流れ出す第1通路81と、第1通路81に設けられて減衰力を発生させる第1減衰力発生機構95と、第1室および第2室62のうちの一方の第2室62に設けられ、第2室62と連通路155a,165aを介して連通可能な隔離室143と、隔離室143内に設けられ、第2室62の圧力により伸縮可能であって、第2室62の圧力が第1所定圧力値より小さいときは連通路155a,165aと隔離室143との連通を遮断する伸縮部材180と、を有する。【選択図】図2
BUFFER
緩衝器
2022-08-31
Patent
Electronic Resource
Japanese