Title:
MULTIPLE VALVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/179968
Kind Code:
A1
Abstract:
The valve housing (12) of a multiple valve device (11) is formed so as to be divided into two parts, that is, into a first housing block (13) and a second housing block (14), the first housing block (13) and the second housing block (14) being abutted against and separated from each other at the positions of opposing joining surfaces (13B, 14A). Three or more spool slide holes (18, 19, 20, 21) are arranged in a three-dimensional structure in the first housing block (13). The remaining spool slide holes (42, 43, 44, 45, 46) are arranged in a three-dimensional structure in the second housing block (14). One of the first and second housing blocks (13, 14) is provided with a relief valve (88) for limiting the maximum pressure in oil passages to or below a predetermined set pressure. The relief valve (88) is disposed at a position closer to the joining surfaces (13B, 14A) than the spool slide holes provided in the one of the first and second housing blocks (13, 14).
Inventors:
KOBAYASHI YOSHINOBU (JP)
TOUGASAKI MITSUHISA (JP)
KUBOTA SATORU (JP)
MATSUZAKI HIROSHI (JP)
TOUGASAKI MITSUHISA (JP)
KUBOTA SATORU (JP)
MATSUZAKI HIROSHI (JP)
Application Number:
PCT/JP2013/064205
Publication Date:
December 05, 2013
Filing Date:
May 22, 2013
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY (JP)
International Classes:
F15B11/00; F15B11/028; F16K27/00; F16K27/04
Foreign References:
| JP2011112123A | 2011-06-09 | |||
| JP2003097743A | 2003-04-03 | |||
| JP2004324741A | 2004-11-18 | |||
| JP2007321807A | 2007-12-13 |
Attorney, Agent or Firm:
HIROSE KAZUHIKO (JP)
Kazuhiko Hirose (JP)
Kazuhiko Hirose (JP)
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