SCREW FALL-OFF PREVENTION INSTRUMENT

PROBLEM TO BE SOLVED: To improve workability at the switching of voltages, by surely holding a screw, while preventing the screw from falling off from a driver at the work of the switching of the voltages. SOLUTION: This screw fall--off prevention instrument 20 is constituted, comprising: its body 22 which has a shaft of the driver 17 for driving the screw 13, and a penetration hole 21 which the head 13a of the screw 13 penetrates; a holding part 23 which holds the screw 13 at the tip of the body 22; an abutting part 24, which improves the fastening/loosening workability of the screw 13 by making a screw hole 10, the screw 13 and the driver 17 lie on a straight line, while making them abut against a master trunk bar 3 of a distribution board; and a knob 25, which makes the instrument sandwiched and clipped by fingers at working. COPYRIGHT: (C)2010,JPO&INPIT