| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a special section of electric wire common groove having a plug body which can properly change the specification, in matching with the installation site. <P>SOLUTION: The special section 1 comprises a box body 5 having a bottom plate 2. The special section 1 is arranged by a fixed interval, with respect to the electric wire common groove. For laying a cable (not shown) or leading out a branch line of the cable within the electric wire common groove, a penetration hole 6 is formed at the bottom plate 2, and the plug body 7 is arranged at the penetration hole 6. The plug body 7 is constituted so as to properly change a plug body having a backflow prevention function constituted so as to be capable of draining the water which flows in the special section 1 to the outside, and a blocking plug body for merely blocking. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
