| 摘要 |
PURPOSE:To easily and surely attach a plug to the tip of a bar to be detachable by manual operation, by interlocking a locking member with the plug at the time of advancing a plunger in an inserting hole provided to the tip of the bar, and making the plunger possible to stay at its moving end by a stopper pin. CONSTITUTION:A stopper pin 31 is moved to either of a staying hole 36 of a cover 35 or a housing part 37 by operating a rod-shaped jig inserted into an operating hole 38 of the pin 31. Then a plunger 30 is easily moved by manual operation, and locking balls 27 are made to e attachable and detachable to and from a locking recessed part 29 of a plug 28, accordingly the plug 28 is made to be easily attachable and detachalbe to and from a cap 22 fixed to a bar 21. At the time of mounting the plunger 28 to the cap 22, a thrust acts between the recessed part 29 and the balls 27 but never acts on the plunger 30 which supports the back of the balls 27. Therefore, the plunger 30 is easily made stay at the advancing end. |
