| 摘要 |
<p>A corrugated tube (40) has a ridge shape (12) and a trough shape (13), viewed on an axial cross-section thereof, alternating along its axial direction. The tube also has a slit (30) along its axial direction, thereby forming first and second zones flanking the slit. The first and second zones comprise a first (12a) and a second end portion (12b) of the ridge shapes (12), respectively. The first end portion (12a) forms a convex portion (31), whilst the second end portion (12b) forms a sequential convex (32) and concave portion (33). Each portion extends from the slit (30) side around the opposing circumferential directions, thereby forming female (44) and male locking means (49) respectively. when the male locking means (49) are inserted under the female locking means (44), the convex portion (31) of the first zone and the sequential convex (32) and concave portion (33) of the second zone are stacked and the slit (30) is firmly locked. <IMAGE></p> |
