Title:
方向切換弁
Document Type and Number:
Japanese Patent JP6981804
Kind Code:
B2
Abstract:
To provide a direction switching valve which is not required to provide a pilot flow passage for operating a selector valve and can achieve a compact structure.SOLUTION: A direction switching valve 10 comprises a manifold 20 and a spool 40 movably arranged in the manifold 20. In the manifold 20, a poppet valve 50 is movably arranged, which can close a pressure oil flow passage 25, 26 communicating with the spool 40. In the manifold 20, a selector valve 60 is arranged, which is moved, with movement of the spool 40, between a seal position where the selector valve seals a pressure oil flow passage 51, 30 for forming a back pressure of the poppet valve 50 and an open position where the selector valve opens the pressure oil flow passage 51, 30 for forming the back pressure of the poppet valve 50.SELECTED DRAWING: Figure 4
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Inventors:
Hitoshi Iwasaki
Ryoma Shoya
Ryoma Shoya
Application Number:
JP2017152607A
Publication Date:
December 17, 2021
Filing Date:
August 07, 2017
Export Citation:
Assignee:
Nabtesco Co., Ltd.
International Classes:
F16K35/02; F15B13/01; F16K11/14
Domestic Patent References:
| JP2000074256A | ||||
| JP4042901U |
Attorney, Agent or Firm:
Hiroyuki Nagai
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Yukihiro Hotta
Takuhisa Murata
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Yukihiro Hotta
Takuhisa Murata