| 摘要 |
PROBLEM TO BE SOLVED: To make a hook easily attachable to a brace or C-type steel by forming an attachable portion by folding a strip of sheet metal at the upper portion of the hook with its diameter corresponding to a brace of each diameter, and then forming a wire supporting portion at the bottom portion. SOLUTION: A strip of a flat sheet metal is folded, and an attachable portion 2 is provided by forming a guide piece and a pinch-holding piece 2b for attaching in a freely detachable manner, in response to a brace B having various diameters at an upper portion (diameters from about 12 mm to 16 mm), and its lower portion is formed to a pair of circular arc shaped hooks positioned oppositely as supporting portion 3 for suspending two electric wires. Then, its attaching portion 2 is pushed down to a brace B which is arranged in an attic space of a building in advance, and the brace B is pinch-held by the pinch- holding piece 2b. Then wires D are placed on the supporting portion 3 and wired in parallel to the brace B. By doing this, these hooks can be easily attached to the brace B or C-type steel. |
