Title:
CONTROL VALVE
Document Type and Number:
Japanese Patent JP2928917
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a control valve capable of rapidly increasing the operational force when the operation range is shifted from the regular one to the special one with relatively simple constitution.
SOLUTION: A control valve is provided with a valve housing body 102, a spool 114 mounted in a spool hole 110 of the valve housing body 102, a cam member to operate the spool hole 114, an operation lever 200 to turn the cam member 190, a detent force providing mechanism 208 to provide the detent force to the operation lever 200, and an operational force rapidly changing mechanism 230 to rapidly change the operational force of the operation lever. The operational force rapidly changing mechanism 230 comprises an operational force providing surface 232 having a projected part 236 for rapidly changing the operational force and an operational force providing member 234 to be worked on the operational force providing surface 232, and the operational force of the operation lever is rapidly increased when the operational force providing member 232 is raised on the operational force rapidly changing projected part 236.
Inventors:
TOGASHI YOSHIO
Application Number:
JP6341997A
Publication Date:
August 03, 1999
Filing Date:
March 17, 1997
Export Citation:
Assignee:
KAWASAKI JUKOGYO KK
International Classes:
F15B13/042; F16K31/44; F16K35/04; (IPC1-7): F16K35/04; F15B13/042; F16K31/44
Domestic Patent References:
| JP821559A | ||||
| JP5149469A |
Attorney, Agent or Firm:
Nishikyo Keiichiro (3 others)
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