US 12,135,093 B2
Valve device
Koichi Sugihara, Chiryu (JP); Mamoru Yoshioka, Nagoya (JP); Shinji Kawai, Gifu (JP); Takashi Bessho, Chiryu (JP); Koki Yasuda, Tokai (JP); Kaisho So, Nagoya (JP); Hirotaka Fukuta, Kariya (JP); and Mizuki Kodama, Toyota (JP)
Assigned to AISAN KOGYO KABUSHIKI KAISHA, Obu (JP)
Appl. No. 17/639,873
Filed by AISAN KOGYO KABUSHIKI KAISHA, Obu (JP)
PCT Filed Sep. 9, 2020, PCT No. PCT/JP2020/034037
§ 371(c)(1), (2) Date Mar. 2, 2022,
PCT Pub. No. WO2021/049507, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 2019-165224 (JP), filed on Sep. 11, 2019.
Prior Publication US 2022/0333708 A1, Oct. 20, 2022
Int. Cl. F16K 27/02 (2006.01); F02M 26/66 (2016.01); F02M 26/70 (2016.01); F02M 26/72 (2016.01)
CPC F16K 27/029 (2013.01) [F02M 26/66 (2016.02); F02M 26/72 (2016.02); F02M 26/70 (2016.02); Y02T 10/12 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A valve device comprising:
a housing including a flow passage for a fluid,
the flow passage including an inlet and an outlet provided in the housing;
a valve element for opening and closing the flow passage;
a valve shaft on which the valve element is provided; and
a mating member to which the housing is assembled,
the mating member including: an assembly hole for the housing; and another flow passage,
wherein while the housing is assembled in the assembly hole of the mating member, the inlet and the outlet of the flow passage communicate with the other flow passage, an inlet sealing member is provided between the housing and the mating member, corresponding to a periphery of the inlet, and an outlet sealing member is provided between the housing and the mating member, corresponding to a periphery of the outlet,
wherein at least one of the inlet sealing member and the outlet sealing member is placed in a groove that is formed in at least one of the outer surface of the housing and the inner surface of the assembly hole,
wherein one of the inlet and the outlet opens in a direction coaxial with the valve shaft and the other opens in a direction intersecting the valve shaft,
wherein one of the inlet sealing member and the outlet sealing member is provided between the housing and the mating member, corresponding to a periphery of a coaxial opening that opens in the coaxial direction, and the other is provided between the housing and the mating member, corresponding to a periphery of an intersecting opening that opens in the intersecting direction, and
wherein the inlet sealing member or the outlet sealing member, which is provided corresponding to the periphery of the intersecting opening, has a lower hardness than the outlet sealing member or the inlet sealing member, which is provided corresponding to the periphery of the coaxial opening, and further has a sealing structure that can ensure a sealing function while allowing both a positional displacement due to a thermal expansion difference between at least the housing and the mating member and a positional displacement due to a positive pressure and/or a negative pressure, which act on the inlet sealing member or the outlet sealing member, which is provided corresponding to the periphery of the intersecting opening.