公开(公告)号：US10132059B2

公开(公告)日：2018-11-20

申请号：US15101060

申请日：2014-12-02

Applicant: KYB Corporation

Inventor： Syunsuke Kubo

IPC: F15B13/00 ,  E02F9/22 ,  F15B13/01 ,  E02F3/42 ,  F15B11/08 ,  F15B13/042 ,  E02F3/32

Abstract: A fluid pressure control device includes a load holding mechanism that is configured to hold the load pressure of the load side pressure chamber. The load holding mechanism includes a switching valve having a communication passage configured to be blocked from the third pressure chamber by the second land section in a case where the spool is closed, and providing communicate between the second supply port and the discharge port in accordance with the movement of the spool in the valve opening direction. In a case where the spool is moved in the valve opening direction, at the same time when or after the second supply port communicates with the discharge port via the communication passage, the first land section is brought into sliding contact with the annular projecting section and the first supply port and the discharge port are blocked from each other.

公开(公告)号：US20170022688A1

公开(公告)日：2017-01-26

申请号：US15101060

申请日：2014-12-02

Applicant: KYB Corporation

Inventor： Syunsuke Kubo

IPC: E02F9/22 ,  F15B11/08 ,  F15B13/042 ,  E02F3/42

CPC classification number: E02F9/2285 ,  E02F3/32 ,  E02F3/422 ,  E02F9/2225 ,  E02F9/2267 ,  E02F9/2292 ,  F15B11/08 ,  F15B13/015 ,  F15B13/0426 ,  F15B2211/205 ,  F15B2211/30

Abstract: A fluid pressure control device includes a load holding mechanism that is configured to hold the load pressure of the load side pressure chamber. The load holding mechanism includes a switching valve having a communication passage configured to be blocked from the third pressure chamber by the second land section in a case where the spool is closed, and providing communicate between the second supply port and the discharge port in accordance with the movement of the spool in the valve opening direction. In a case where the spool is moved in the valve opening direction, at the same time when or after the second supply port communicates with the discharge port via the communication passage, the first land section is brought into sliding contact with the annular projecting section and the first supply port and the discharge port are blocked from each other.

Abstract translation: 流体压力控制装置包括负载保持机构，其被构造成保持负载侧压力室的负载压力。 负载保持机构包括切换阀，其具有连通通路，该连通通路构造成在阀芯关闭的情况下被第二接地部分从第三压力室挡住，并且在第二供给口和排出口之间根据 阀芯在阀打开方向上的运动。 在阀芯沿阀打开方向移动的情况下，在第二供给口经由连通路与排出口连通的同时，第一接地部与环状突起部滑动接触， 第一供给口和排出口彼此堵塞。