| 摘要 |
<p>PURPOSE: To facilitate the assembling and removal of a hook while improving flexibility of the hook by providing waved undulations in a base part of a lug. CONSTITUTION: A metal band 1 is annually wound, and includes a lug 2 formed of a radial bent part at the inside end thereof, and the lug 2 is continuously formed to an extension part 3 positioned under the outside end. Similarly, the outside end has a lug 4 formed of a radial bent part, and the lug 4 is reinforced by a rib 4a, and provided with a hook 5. The band 1 is provided with two small waved undulations 1b, 1c at the base part of the radial bent part formed of the lug 4, and the maximum space (d) between an inner surface of the waved undulations 1c, 1d and an outer surface of the extension part 3 is formed smaller than the thickness of the band 1 in range at 1/3-1/2 of the thickness of the band. Flexibility of the hook 5 can be thereby improved, and installation and removal of a clamp is facilitated.</p> |
