To improve productivity while simplifying a mechanism for controlling the injection of carbon dioxide gas filled in a storing body.
The pressure fluid storing device filled with liquefied carbon dioxide gas includes a synthetic resin-made storing body 1; a synthetic resin-made head 2 integrally connected to the storing body 1 to seal the storing body 1 by being welded to an opening side of the storing body 1; and a valve mechanism 8 disposed in the head 2 to open and close an injection port 9 formed at the head 2. The valve mechanism 8 includes a needle 11 having a sealing portion 13 formed at a tip side so as to be reduced in diameter from the base end side to the tip side, and a coil spring 12 urging the needle 11. The needle 11 is movably disposed in the head 2 forward and backward, opens and closes the injection port 9 by moving forward and backward, and is urged by the coil spring 12 to fit the sealing portion 13 to the injection port 9 to close it.
| JP2010180921 | OVERFILLING PREVENTION DEVICE FOR DME FUEL TANK |
KAMIYAMA MASAYUKI
MITA NOBUYUKI
MAJOR TECH KK