| 摘要 |
<p>There are provided interlock pieces (32a,33a) extending from both edge portions of a side-to-side winglike piece (34) provided in a pull-tab retainer (30) toward an anterior wall part (32) and posterior wall part (33) of the pull-tab retainer (30). An anterior support wall (14a) of anterior mounting post (14) and a posterior support wall (15a) of posterior mounting post (15) at superior angular corner regions of the internal faces (16,17) thereof are provided with notches (14c,15c) for interlocking of the interlock pieces (32a,33a). When the pull-tab retainer (30) is fitted to the anterior mounting post (14) and posterior mounting post (15), the interlock pieces (32a,33a) and the notches (14c,15c) are interlocked together to thereby prevent any displacement of the pull-tab retainer (30) in anteroposterior side-to-side directions. Further, at that time, a side end face (14f) of the anterior support wall (14a) and a side end face (15f) of the posterior support wall (15a) can be covered up by the pull-tab retainer (30).</p> |
