发明名称 |
FLUID PRESSURE CONTROL DEVICE |
摘要 |
A fluid pressure control device includes a switching valve that operates in conjunction with a control valve by a pilot pressure to switch an operation of an operated check valve. The switching valve includes a spool that moves according to the pilot pressure of a pilot chamber, and a piston that is accommodated in the pilot chamber and imparts a thrust force to the spool upon receiving the pilot pressure. The piston includes a first piston that is slidingly accommodated in the pilot chamber and is acted upon by the pilot pressure, and a second piston whose distal end faces the spool and is inserted into an accommodating hole formed in the first piston. A spherical protrusion is provided on a center of either one of a bottom surface of the accommodating hole of the first piston and a back surface of the second piston. |
申请公布号 |
KR20140138695(A) |
申请公布日期 |
2014.12.04 |
申请号 |
KR20147024880 |
申请日期 |
2013.03.25 |
申请人 |
KAYABA INDUSTRY CO., LTD. |
发明人 |
TAKEUCHI TOORU |
分类号 |
F16K31/122;E02F9/22;F15B11/08;F16K11/07 |
主分类号 |
F16K31/122 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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