| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To utilize even a narrow sidewalk, by arranging a ground device installed in an electrical cable common duct provided in a sidewalk zone so as to be deviated from the position of the electrical cable common duct and close to the sidewalk. <P>SOLUTION: A common duct system comprises an electrical cable common duct body 1 to be buried in a sidewalk zone W, and a lid 10 for supporting a ground device P installed on the upper part of the body 1. The system includes by forming right and left support edges 7, formed at an upper opening position of the electrical cable common duct body 1; a cable insertion portion 42 for inserting various cables C, when the position of the ground device P is adjusted along the supporting edges 7; a positioning-adjusting section 6 formed on the lid 10 for closing the upper opening of the electrical cable common duct body 1; and a device supporting lid 20, equipped with device supporting edges for supporting the ground device P and positioning and fixing the ground device P to the positioning-adjusting section 6. The device support lid 20 includes a supporting frame portion for positioning and adjusting on the support edges 7, and device support edges for placing the ground device P, and is fixed to the support edges 7 with screws, after being positioned along the positioning-adjusting direction. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
