| 摘要 |
PROBLEM TO BE SOLVED: To provide an extension bolt that stabilizes a state after locking even when a gap between itself and a floor surface is not constant and that can be easily assembled.SOLUTION: An extension bolt 5 houses a slider 13 that has a knob 14 supported in a vertically movable manner at a predetermined stroke via a guide 20 in recesses 9a, 9b and 10 provided on a back surface of a body 6. A magnet 19 is housed in the back surface of the slider 20, and an iron back plate 22 is fixed to the body 6 together with the guide 20 via a resin sheet 21. |
