| 摘要 |
PROBLEM TO BE SOLVED: To provide a screw fastening tool that facilitates the mounting work of a screw-type caster.SOLUTION: A single-open wrench 1 is formed by linearly constituting the width across flat of the opening corresponding to the hexagon head of a screw of a screw-type caster and the following handle 3. A retaining plate 4 is formed by linearly constituting a plate portion 5 inserted inside of wheel supporting metal fittings and controlling a free movement of the wheel when fitting the opening to the hexagon head of the screw, and the following strip-shaped plate 6. Both of the above are disposed in confronting parallel at proper intervals required and integrally constituted at the edge of the handle 3. A fastening/releasing device 7 is provided for fastening and releasing both of the above. The fastening/releasing is performed, thereby freely holding and releasing a bearing portion following the hexagon head of the screw by using the opening of the wrench and the retaining plate 4. |
