| 摘要 |
When connecting a plunger (110) to a piston (2), the joint mechanism engages a plunger-side engaging region (130) with a piston-side engaging region (20) by passing the engaging members (131) of the plunger-side engaging region (130) in a retracted state through a first engagement wall region (21) of the piston-side engaging region (20), after which the engaging members (131) of the plunger-side engaging region (130) protrude into a second engagement wall region (22) and the protruded state of the engaging members (131) is locked with a locking block (132b). <o> </o> |
