| 摘要 |
<p>A main body section (23) has a first slit (27) formed therein along the lengthwise direction thereof, and a mold section (25) has a second slit (29) connecting the first slit (27) and the exterior, and formed therein along the lengthwise direction thereof. The second slit (29) has a first intersecting section (29B) at which a center line (L2) intersects a straight line (L1) which passes through the first slit (27) and the center (A) of the main body section (23), when viewed from the lengthwise direction of the mold section (25).</p> |
