US 11,739,853 B2
Ventilation component
Yusuke Nakayama, Osaka (JP); Youzou Yano, Osaka (JP); Tomoyuki Kasagi, Osaka (JP); and Akira Miyagaki, Osaka (JP)
Assigned to NITTO DENKO CORPORATION, Osaka (JP)
Appl. No. 17/425,220
Filed by NITTO DENKO CORPORATION, Ibaraki (JP)
PCT Filed Jan. 24, 2020, PCT No. PCT/JP2020/002560
§ 371(c)(1), (2) Date Jul. 22, 2021,
PCT Pub. No. WO2020/158612, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2019-013267 (JP), filed on Jan. 29, 2019.
Prior Publication US 2022/0120354 A1, Apr. 21, 2022
Int. Cl. F16K 15/14 (2006.01); F16K 24/04 (2006.01)
CPC F16K 15/148 (2013.01) [F16K 24/04 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A ventilation component with a pressure release valve, the ventilation component comprising:
a valve body portion including an elastomer and having an umbrella cloth shape;
a shaft portion extending tubularly in a normal direction of the valve body portion and supporting the valve body portion;
a ventilation path extending through at least one of the shaft portion and the valve body portion in the normal direction of the valve body portion; and
a gas-permeable membrane closing the ventilation path such that ventilation can occur and allowing gas to pass therethrough in a thickness direction thereof, wherein
the ventilation component is used while being fixed to a housing having openings through which an inner space and an external space of the housing communicate with each other,
the housing has, as the openings, a shaft portion-compatible opening having an inner diameter capable of insertion of the shaft portion and a peripheral opening positioned around the shaft portion-compatible opening,
in a fixed state where the shaft portion is inserted into the shaft portion-compatible opening to fix the ventilation component to the housing, the valve body portion covers the peripheral opening and an outer circumferential portion of the valve body portion is in contact with an outer surface of the housing such that a flow of gas passing through the peripheral opening is blocked, and ventilation occurs between the inner space and the external space via the gas-permeable membrane,
in the fixed state, when a pressure difference obtained by subtracting a pressure of the external space of the housing from a pressure of the inner space of the housing is equal to or higher than a predetermined value, the valve body portion elastically deforms to be away from the outer surface to release the pressure of the inner space, and
the ventilation component satisfies the following condition (I) or (II):
(I) the valve body portion and the shaft portion are formed integrally with each other;
(II) the ventilation component is capable of being fixed to the housing in which the shaft portion-compatible opening and the peripheral opening are formed on the same plane, and the valve body portion has a constant thickness between both ends of a flange that covers the valve body portion around the shaft portion in a direction perpendicular to the shaft portion.