SWITCHING VALVE

Japanese Patent JP3763185

B2

PROBLEM TO BE SOLVED: To prevent a fluid leak of a switching cutoff part in a multi-port switching valve internal flow path.
SOLUTION: This switching valve is constituted by a valve shaft member 2 fitted right/left slidably to a valve housing 1 and a floating ring member 3 in a peripheral surface thereof. The valve housing 1 is formed with a valve chamber by a peripheral wall part 4 and an end wall part 5, 5, to be formed by a first/second/third chamber 7, 8, 6. In the peripheral wall part 4, a pressure fluid supply port 14a communicating with the first chamber 7 and a discharge port 15 communicating with the second chamber 8 are passed through, a communication path 14b branching from the peripheral wall part 4 and the pressure fluid supply port 14a to communicate with the third chamber 6 is passed through, and a first circulation port 12 is passed through from an internal peripheral surface of a first inner flange part 28, a second circulation port 13 is passed through from an internal peripheral surface of a second inner flange part 29. A contact part regulating a moving range of the floating ring member 3 by movement in an axial line direction of the valve shaft member 2 is provided, by contact with separation from an end face internal peripheral region of the floating ring member 3 by axial line direction moving operation of the valve shaft member 2 and the valve housing 1, a valve internal flow path is switched.

Hisayuki Takahashi

JP13658097A

April 05, 2006

May 27, 1997

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Isuzu Motors Limited

F16K11/07; F16K31/05; (IPC1-7): F16K11/07; F16K31/05

JP60122071U
JP55152974A
JP1075668U
JP56097682A
JP6040410U
JP8110094A
JP51058718A

Yoshiaki Numagata
Takio Sumiyoshi
Yasue Numagata

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