| 摘要 |
PROBLEM TO BE SOLVED: To provide a temporarily-fastening device for a screw fastening tool, which temporarily-fastening device can quickly, simply, and surely carry out the temporary-fastening of a screw when the screw is fastened by means of a screw fastening tool, such as an impact wrench. SOLUTION: An extension bar 11 is supported in a case 10 so as to move in the axial direction and so as to rotate, and a second one-way clutch 26 is arranged between them. A slider 20 is mounted on the extension bar 11 via a first one-way clutch 19, and a guide screw 25 fixed to the case 10 is inserted into the slider 20. When a bolt 3 held by the extension bar 11 is fitted into a screw hole 8 and the impact wrench 4 connected to the case 10 is pushed, the slider 20 rotates, and the bolt 3 is temporarily fastened by rotating the extension bar 11 via the first one-way clutch 19. After that, the impact wrench 4 is operated, and the bolt 3 is fastened by rotating the extension bar 11 via the second one-way clutch 26. COPYRIGHT: (C)2007,JPO&INPIT
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