Patent ID: 11971139
Assignee: HONDA MOTOR CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A high-pressure tank comprising:
a resin liner constituting a hollow fluid filling part;
a ferrule including a supply/discharge port which communicates with an internal space of the liner and a flange part which protrudes outward in a radial direction from a circumferential region of the supply/discharge port and abuts on the liner; and
a reinforcing layer made of a fiber reinforced resin attached to cover across the liner and an outer circumferential surface of the flange part, wherein
a discharge hole allowing a gap between abutting surfaces of the flange part and the liner to communicate with an inside of the supply/discharge port and discharging a fluid accumulated between the liner and the reinforcing layer to the supply/discharge port is provided in the ferrule,
a trap groove surrounding a circumferential region of the discharge hole is provided on at least any one of the abutting surface of the flange part and the abutting surface of the liner,
a protruding part is formed on any one of the abutting surfaces of the flange part and the liner to surround the circumferential region of the discharge hole on an inner side of the trap groove and press against the other of the abutting surfaces,
a communication hole extending from a bottom portion of the trap groove to an end surface of the ferrule on an outer side in an axial direction, and
the communication hole and the trap groove are closed by a filler.