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Patent Searching and Data


Title:
VALVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/098622
Kind Code:
A1
Abstract:
There is a demand for easier transmission of the pressing force of an elastic body to a seal than in conventional valve devices to further improve sealing while providing durability and without changing the magnitude of the force of the elastic body. A valve device is configured so that provided therein are: a housing with a fluid passage through which fluid passes; a valve shaft slidably provided in the housing and having valves for opening and closing the fluid passage by sliding; and a sealing part provided between the housing and the valve shaft so as to surround the valve shaft in the radial direction and having a seal with a recess in the axial direction of the valve shaft that deforms with pressure and an elastic body provided in the seal recess that presses the seal in the radial direction of the valve shaft. The sealing part is configured so that a first range of thicknesses for the base of the valve shaft-side side surface of the seal recess is thinner than a second range of thicknesses for the portion of the valve shaft-side side surface of the seal recess that contacts the valve shaft.

Inventors:
MAEBAYASHI, Akira (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
ZUI, Takuro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
KATO, Yasuhiko (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2015/084600
Publication Date:
June 15, 2017
Filing Date:
December 10, 2015
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
F16K41/04; F16K1/32
Domestic Patent References:
WO2012105109A12012-08-09
WO2014072544A12014-05-15
Foreign References:
JPS62878U1987-01-07
JP2005273555A2005-10-06
Attorney, Agent or Firm:
INABA, Tadahiko et al. (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
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