US 12,331,882 B2
Tank
Masayoshi Takami, Hamamatsu (JP); Chihiro Uchimura, Toyota (JP); Akira Noumura, Nisshin (JP); and Shinichi Nomura, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jun. 7, 2023, as Appl. No. 18/330,787.
Claims priority of application No. 2022-123622 (JP), filed on Aug. 2, 2022.
Prior Publication US 2024/0044453 A1, Feb. 8, 2024
Int. Cl. F17C 1/16 (2006.01)
CPC F17C 1/16 (2013.01) [F17C 2201/0109 (2013.01); F17C 2203/012 (2013.01); F17C 2203/0604 (2013.01); F17C 2203/0619 (2013.01); F17C 2203/066 (2013.01); F17C 2203/0673 (2013.01); F17C 2205/0323 (2013.01); F17C 2221/012 (2013.01); F17C 2260/036 (2013.01); F17C 2270/0168 (2013.01); F17C 2270/0184 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A tank that is cylindrical in shape and that has a storage space for storing gas, the tank comprising:
with an outer side of the tank as upward and an inner side of the tank as downward, along an axial direction of the tank,
a liner that is made of resin, and in which the storage space is provided;
a neck that is made of metal, and that is integrally molded with the liner, the neck having a communicating orifice configured to communicate with the storage space;
a metal cylindrical member that is inserted into a lower end portion of the communicating orifice of the neck and that is disposed coaxially with the communicating orifice; and
a valve that is inserted into the communicating orifice to close off the neck, wherein;
a lower end portion of the valve is inserted into the metal cylindrical member;
the liner includes a wrap-around portion that is configured to wrap around to inside of the communicating orifice from a base portion of the neck, and to come into contact with an outer circumferential face of the metal cylindrical member;
a first O-ring is disposed in a circumferential direction of the tank between an inner circumferential face of the wrap-around portion and the outer circumferential face of the metal cylindrical member;
a first backup ring is disposed upward from the first O-ring in the axial direction of the tank;
a first outer circumferential groove is provided on the outer circumferential face of the metal cylindrical member;
the first O-ring and the first backup ring are disposed in the first outer circumferential groove, in contact with each other;
a second O-ring is disposed in the circumferential direction of the tank between an inner circumferential face of the metal cylindrical member and an outer circumferential face of the lower end portion of the valve;
a second backup ring is disposed upward from the second O-ring in the axial direction of the tank;
a second outer circumferential groove is provided on the outer circumferential face of the lower end portion of the valve; and
the second O-ring and the second backup ring are disposed in the second outer circumferential groove, in contact with each other.