LOCK MECHANISM

To prevent the plastic deformation of a female member.SOLUTION: A female knob part 14-5 is moved toward the inside by pressing the female knob part 14-5 to the inside, a lock state can be released by releasing the engagement of a female small-diameter claw 14-3 and a male small-diameter part 12-4 by the movement of the female small-diameter claw 14-3 to the outside, and the lock state can be formed by the engagement of the female small-diameter claw 14-3 and the male small-diameter part 12-4 by the movement of the female small-diameter claw to the inside by releasing the pressurization of the female knob part 14-5. A female bulged part 14-6 is formed inside the female knob part 14-5, or outside a female cylinder part 14-1, and when the female knob part 14-5 is pressed and moved to the inside, the female bulged part 14-6 functions as a stopper for the movement of the female knob part to the inside.SELECTED DRAWING: Figure 1 【課題】メス部材の塑性変形を防止する。【解決手段】メスつまみ部１４−５を内側に押圧することで、メスつまみ部１４−５が内側に向けて移動すると共にメス小径爪１４−３が外側に移動してメス小径爪１４−３とオス小径部１２−４との係合を解除してロック状態を解除することができ、メスつまみ部１４−５の押圧を解除することで、メス小径爪１４−３が内側に移動してオス小径部１２−４と係合してロック状態を形成することができる。メスつまみ部１４−５の内側またはメス筒部１４−１の外側にメス膨出部１４−６が形成され、メスつまみ部１４−５が押圧されて内側に移動する際に、メス膨出部１４−６がメスつまみ部の内側への移動のストッパとして機能する。【選択図】図１