| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To secure safety even if a plug tip end part is forcibly pressed into a gas hose directly by mistake without using a socket. <P>SOLUTION: The plug tip end part 2 is composed by airtightly connecting a first cylinder part 18 forming a part of a gas flow-in passage 1 to a second cylinder part 19 forming a part of the gas flow-in passage, mutually reciprocatingly along a cylinder axis X within a certain range in the approaching and separating direction, and a groove side face of one of a pair of annular groove side faces 10a, 10b surrounding a circumferential groove part 10 is formed at the first cylinder part and the other groove side face is formed at the second cylinder part. A valve mechanism D which freely opens and closes the gas flow-in passage and an interlocking mechanism E for opening the valve mechanism by interlocking with mutual separating action of the first and second cylinder parts so that a sphere body 11 of a ball detent mechanism C enters between the pair of annular groove side faces and for closing the valve mechanism by interlocking with mutual approaching action of the first and second cylinder parts are provided at the plug tip end part. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
