公开(公告)号：US09834054B2

公开(公告)日：2017-12-05

申请号：US15022323

申请日：2014-09-18

Applicant: KYB Corporation

Inventor： Takashi Teraoka ,  Kazutaka Inamitsu ,  Tatsuya Masamura

IPC: F16F9/512 ,  B60G13/08 ,  F16F9/516 ,  F16F9/348 ,  F16F9/46 ,  F16F9/18 ,  F16F9/06

CPC classification number: B60G13/08 ,  B60G2202/24 ,  B60G2206/41 ,  B60G2800/162 ,  F16F9/061 ,  F16F9/18 ,  F16F9/348 ,  F16F9/468 ,  F16F9/5126 ,  F16F9/516 ,  F16F2228/066

Abstract: A shock absorber includes; a free piston that partitions the compression chamber into an expansion-side compression chamber and a contraction-side compression chamber; an expansion-side flow passage that connects the expansion-side chamber with the expansion-side compression chamber; a contraction-side flow passage that connects the contraction-side chamber with the contraction-side compression chamber; an expansion-side bypass valve provided in the expansion-side flow passage to admit only a flow directed from the expansion-side chamber to the expansion-side compression chamber and generate resistance; a contraction-side bypass valve provided in parallel with the expansion-side bypass valve to admit only a flow directed from the expansion-side compression chamber to the expansion-side chamber and generate resistance; an expansion-side elastic stopper configured to stop the free piston at an expansion-side stroke end; and a contraction-side elastic stopper configured to stop the free piston at a contraction-side stroke end.