US 11,733,718 B2
Valve device
Kenta Mihara, Kanagawa (JP)
Assigned to PIOLAX, INC., Kanagawa (JP)
Appl. No. 17/46,459
Filed by PIOLAX, INC., Kanagawa (JP)
PCT Filed Apr. 3, 2019, PCT No. PCT/JP2019/014824
§ 371(c)(1), (2) Date Oct. 9, 2020,
PCT Pub. No. WO2019/198596, PCT Pub. Date Oct. 17, 2019.
Claims priority of application No. 2018-076252 (JP), filed on Apr. 11, 2018; and application No. 2018-150777 (JP), filed on Aug. 9, 2018.
Prior Publication US 2021/0157339 A1, May 27, 2021
Int. Cl. G05D 7/01 (2006.01); B60K 15/035 (2006.01); F16K 24/06 (2006.01); F16K 24/04 (2006.01); B60K 15/03 (2006.01)
CPC G05D 7/0146 (2013.01) [B60K 15/035 (2013.01); F16K 24/04 (2013.01); F16K 24/06 (2013.01); B60K 2015/03289 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A valve device, comprising:
a housing in which, via a partition wall, a valve chamber communicating with an inside of a fuel tank is provided below the partition wall and a vent chamber communicating with an outside of the fuel tank is provided above the partition wall, and a vent hole through which the valve chamber and the vent chamber communicate with each other is provided in the partition wall; and
a float valve that is accommodated in the valve chamber so as to be able to move up and down and that opens and closes the vent hole,
wherein a valve seat is formed on a side of the valve chamber of the partition wall, and an opening communicating with the vent hole is provided on an inner side of the valve seat,
wherein the opening includes a first opening and a second opening extending outward in a slit shape from at least one position of an outer periphery of the first opening,
wherein a seal part having elasticity that contacts with and separates from the valve seat to close and open the first opening and the second opening, is disposed above the float valve,
wherein a cylindrical wall protrudes downward from the side of the valve chamber of the partition wall, and a tip end portion of the cylindrical wall in a protruding direction constitutes the valve seat, and
wherein a cover portion that covers an interior end surface of the second opening, is provided at a predetermined position of the inner side of the valve seat on a side of the vent chamber.