| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a socket for gas whose manufacturing cost is low.SOLUTION: In a socket 1 for gas, a base part 3a of a hose end 3 is rotatably fitted to one end part 2c of a connection hole 2a, a spring pin 9 is engaged into an annular engagement recess part 3d formed on the outer peripheral surface of the base part 3a, and thereby the base part 3a is prevented from being come off from the one end part 2c. First and second projections 3e, 3f are formed on the inner peripheral surface of the base part 3a. The first and second projections 3e, 3f are arranged across the engagement recess part 3d in the axial direction of the base part 3a, and arranged respectively on intersection lines between a plain surface containing respective axial lines of the base part 3a and tip part 3b and the inner peripheral surface of the base part 3a, in the circumferential direction of the base part 3a.</p> |
