| 摘要 |
PROBLEM TO BE SOLVED: To improve operability of a valve opening operation of a gas filling coupling. SOLUTION: When a filling preparation switch is turned on in this gas filling coupling 50, a control device 34 opens an opening/closing valve 28 for air of an air pipeline 60 to supply compressed air to a main valve cylinder 70 of the gas filling coupling 50. When the compressed air is introduced into a cylinder chamber 73 via the air pipeline 60, a piston part 70d of the main valve cylinder 70 is pressed in the B direction and a second passage 70b is moved to a valve opening position communicated with an annular groove 71b and a connection port 74. As a result, the main valve cylinder 70 easily and smoothly opens a valve part by pressure of the compressed air. COPYRIGHT: (C)2004,JPO
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