| 摘要 |
PROBLEM TO BE SOLVED: To easily attach/detach a scaffolding bolt to/from an existing or new electric pole. SOLUTION: This scaffolding bolt unit comprises: a socket 1 which is equipped with an axially formed insertion hole 2, a guide groove 3 formed along an axial direction on the peripheral surface of the insertion hole 2, an annular groove 4 circumferentially formed in such a manner as to communicate with the insertion hole 2 and the guide groove 3, a portion 5 to be locked, formed on the wall surface, on the opening end-side of the socket 1, of the annular groove 4, and a male screw 7 provided in an axially protruding manner at a closed end; and the scaffolding bolt 10 which is equipped with an insertion end 12a capable of being inserted into/extracted from the insertion hole 2 formed at the leading end of a shank 12, a locking body 17 formed in an out-of-diameter direction on the peripheral surface of the insertion end 12a, capable of being axially inserted into/extracted from the guide groove 3 and capable of being engaged into the annular groove 4 from the guide groove 3 by the rotation of the scaffolding bolt 10, and a locking portion 18 capable of being engaged with/disengaged from the portion 5 protrusively provided on the wall surface, on the side of the head 11 of the scaffolding bolt 10, of the locking body 17. COPYRIGHT: (C)2008,JPO&INPIT
|
