| 摘要 |
PROBLEM TO BE SOLVED: To provide valve structure capable of preventing a valve seat from the influence of the pressure of high-pressure gas. SOLUTION: A connection part 256 of the gas filling coupling 202 has a closing valve 208, a holding member 278 for holding the closing valve 208, a lock mechanism 307 to be engaged with a receptacle, a hollow insertion pipe 308, a spring receiver 310 to be engaged with the periphery of the insert pipe 308, and a coil spring 312 for pushing the spring receiver 310 in a valve closing direction (Xa direction). An unlocking operation ring 268 is slidably provided in the periphery of the connection part 256. The holding member 278 is provided with a limit switch 236 for detecting turning position of a presser ring 332 turned to a position wherein the presser ring 332 is to be locked by the receptacle 20. Since turning position of the operation ring 28 in the condition wherein the gas filling coupling 202 is connected to the receptacle is different from that in the non-connecting condition, connecting condition can be easily detected by detecting turning position. COPYRIGHT: (C)2005,JPO&NCIPI
|
