公开(公告)号：US20160236533A1

公开(公告)日：2016-08-18

申请号：US15025611

申请日：2014-10-03

Applicant: KYB CORPORATION

Inventor： Yasuhiro INAGAKI ,  Shinichi HAGIDAIRA ,  Ryousuke KAMAKURA

IPC: B60G17/08 ,  F16F9/348 ,  F16F9/46

CPC classification number: B60G17/08 ,  B60G13/08 ,  F16F9/06 ,  F16F9/19 ,  F16F9/348 ,  F16F9/46

Abstract: A hydraulic shock absorber includes: an expansion-side passage and a contraction-side passage that connect an expansion-side chamber with a contraction-side chamber; an expansion-side valve body configured to open or close the expansion-side passage; a contraction-side valve body configured to open or close the contraction-side passage; an expansion-side back-pressure chamber configured to bias the expansion-side valve body; a contraction-side back-pressure chamber configured to bias the contraction-side valve body; a communicating channel that communicates with the expansion-side back-pressure chamber through an expansion-side resistance element, the communicating channel communicating with the contraction-side back-pressure chamber through a contraction-side resistance element; an expansion-side pressure introduction passage that connects the expansion-side chamber with the contraction-side back-pressure chamber; a contraction-side pressure introduction passage that connects the contraction-side chamber with the expansion-side back-pressure chamber; a regulating passage connected to the communicating channel; and a solenoid pressure control valve provided in the regulating passage to control a pressure in the upstream of the regulating passage. An expansion-side load for biasing the expansion-side valve body by virtue of the pressure of the expansion-side back-pressure chamber is larger than a contraction-side load for biasing the contraction-side valve body by virtue of the pressure of the contraction-side back-pressure chamber.

Abstract translation: 液压减震器包括：膨胀侧通道和收缩侧通道，其将膨胀侧室与收缩侧室连接; 膨胀侧阀体，其构造成打开或关闭所述膨胀侧通路; 构造成打开或关闭收缩侧通道的收缩侧阀体; 膨胀侧背压室，其构造成偏压膨胀侧阀体; 收缩侧背压室，构造成偏压收缩侧阀体; 连通通道，其通过膨胀侧电阻元件与膨胀侧背压室连通，所述连通通道通过收缩侧电阻元件与收缩侧背压室连通; 膨胀侧压力引入通道，其将膨胀侧室与收缩侧背压室连接; 收缩侧压力引入通道，其将收缩侧室与膨胀侧背压室连接; 连接到所述通信通道的调节通道; 以及设置在调节通道中以控制调节通道上游的压力的螺线管压力控制阀。 由于膨胀侧背压室的压力而使膨胀侧阀体偏压的膨胀侧负荷大于由于压缩侧的压力而使收缩侧阀体偏压的收缩侧负荷 收缩侧背压室。