| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that when using the same socket for a long period of time in a power tool such as an impact wrench, a fitting part of a square drive of an anvil and a square hole of the socket is worn gradually, so that a connecting pin receives rotational striking force of the anvil, namely, the connecting pin continually receives the rotational striking force to cause the connecting pin to be plastically deformed, and thereby the connecting pin cannot be removed from a through-hole of the socket, resulting in causing a risk that the socket cannot be replaced.SOLUTION: According to a present invention, a material of a connecting pin is formed of an elastic body, and thereby even when the fitting part of the square drive of the anvil and the square hole of a socket is worn out and the rotational striking force is applied to the anvil, the connecting pin is elastically deformed. Consequently, if tightening work of a bolt, etc., is finished and the rotational striking force is not applied, the connecting pin returns to an original shape, and the socket can be replaced. |
