| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a flexible unit for underground wiring which can prevent the connection part to a manhole or the like from being destroyed by being bent when a step difference is brought about in the ground by an earthquake and the subsidence of the ground. SOLUTION: A first unit 1 and a second unit 2 are alternately arranged, and a projection 4 for connection projected in the first unit 1 is inserted into the second unit 2 and fastened by a bolt 8, thereby flexibly connecting together both units. Pipe inserting holes 3, 6 are formed in the same position in the respective units, and a flexible pipe 9 for receiving an electric wire is inserted into the inside.</p> |
