Title:
通気弁及び配管構造
Document Type and Number:
Japanese Patent JP6718404
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a vent valve capable of closing a vent hole more surely.SOLUTION: A vent valve 100 includes: a vent valve body 110; a valve body 120; and a packing 130 arranged between a body side holding surface 115 and a valve body side holding surface 122, and held and pressed by the body side holding surface 115 and the valve body side holding surface 122 when the valve body 120 moves to a closed position. The packing 130 includes: a fixing part 138 fixed to the vent valve body 110; and a sealing part 131 extending from a base end adjacent to the fixing part 138 to a tip, and elastically deforms by being held and pressed by the body side holding surface 115 and the valve body side holding surface 122. The sealing part 131 has a first surface 132 opposing to the body side holding surface 115. In a cross sectional view cut along the radial direction of an original shape of the sealing part 131, when the valve body 120 is in an open position, a second surface 133 of the sealing part 131 has a substantially linear shape, and is inclined with respect to the valve side holding surface 122 so that a distance between itself and the valve side holding surface 122 reduces toward the tip.SELECTED DRAWING: Figure 13
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Inventors:
Atsushi Nakamura
Application Number:
JP2017063143A
Publication Date:
July 08, 2020
Filing Date:
March 28, 2017
Export Citation:
Assignee:
Mirai Industry Co., Ltd.
International Classes:
F16K1/42; E03C1/122; F16K24/06; F16L55/07
Domestic Patent References:
| JP2009299866A | ||||
| JP20168683A | ||||
| JP200875827A |
Foreign References:
| US5048562 |
Attorney, Agent or Firm:
Hiroe Associates Patent Office