| 摘要 |
A handle intended to be used in conjunction with a conventional screwdriver that allows a user to operate on a screw without having to remove and reposition the screwdriver on the screw. The handle comprises a shaft having an elongated cavity disposed therein, wherein the handle of a conventional screwdriver is accommodated within the cavity in a lengthwise orientation. A spring attached to the end of the cavity is longitudinally disposed within the cavity, the spring having a rubber stopper disposed at its end opposite of the end of the cavity. When a screw is to be operated on, a downward normal force is applied to the screw in addition to the rotational force required to turn the screw. The downward force compresses the spring, and the rubber stopper contacts the top of the handle, thereby translating rotational motion of the shaft to the handle of the screwdriver, to the shaft of the screwdriver, and finally to the screw. When the shaft has been rotated to a point where the user is no longer able to rotate the shaft to produce adequate force to operate the screw, the user releases the downward normal force and rotates the shaft in the opposite direction. The force exerted by the spring alone is sufficient to prevent the tip of the screwdriver from being dislodged from its mating engagement with the screw.
|
