| 摘要 |
<p>PURPOSE:To cause no damage to an electric wire by upward bending the steel tower side of a filament-holding wire groove provided at a clamp body and spreading the steel tower side like a trumpet toward the end and by providing a filament presser foot, which has a wire groove shaped symmetrically with respect to the wire groove end, at the clamp body via fastening tools. CONSTITUTION:The steel tower side wire groove 10d of a filament-holding wire groove 10c provided at a clamp body 10 is bent upward and spread like a trumpet toward the end, and a filament presser foot 18 having a wire groove 18a shaped symmetrically with respect to the wire groove end 10d is provided at the clamp body 10 via fastening tools 19, 20. The leading part from the clamp of a jumper wire grasped by this strain clamp 10 is guided without strain by the trumpet-like spread part of the steel tower side end 10d of the filament- holding groove 10c and grasped surely by the filament presser foot provided at the end. Thus, even an overhead earth-wire having an optical fiber built-in can be safely laid without suffering damage.</p> |
