| 摘要 |
A checking device 60 includes a C-shaped member 61 seated on the end face 33 of a retainer 30, a ring member 62 inserted into the retainer 30 and a pair of connecting members 63 connecting the C-shaped member 61 and the ring member 62. Each of the connecting members 63 has a weak portion 64, such as a V-notch. After the spool 42 has advanced beyond the pawls 32, the weak portion 64 is broken by a second-tube-inserting force exerted on the connecting members 63 via the spool 42 and the ring member 62 on which the spool 42 is seated.
|
