| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fastener capable of easily performing the fastening work. <P>SOLUTION: A cross-tip screwdriver 100 which fastens a cross-head screw by rotating the cross-head screw includes: a blade edge section 2 to be engaged to the cross-head screw; and a grip portion 1 fixed to a grip side of the blade edge section 2 and having a hollow part 11. The blade edge section 2 includes: an inner-diameter side part 21; and an outer diameter side part 22 provided to surround the outer periphery of the inner-diameter side part 21. The outer-diameter side part 22 can move inside the hollow part 11 along a rotary axis R between a blade edge side position and a grip side position. In the state that the outer-diameter side part 22 is positioned on the blade edge side, the blade edge section 2 can fasten the cross-head screw of one size. In the state that the outer-diameter side part 22 is positioned on the grip side, the blade edge section 2 can fasten the cross-head screw of other size different from the one size. <P>COPYRIGHT: (C)2012,JPO&INPIT |
