Importance

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Abstract

The present invention is related to a screwdriver in which a shaft lever with polygon socket is inserted into the central hole of the screwdriver handgrip so that a turning shaft to facilitate force application is plugged from the rear end of the handgrip into the socket in order to perform a rapid rotation of the shaft lever; the other end of the shaft lever can be connected to a extension shaft to be in a coupled state while an application shaft for screwdriver head can be plugged into the inner hole of the extension shaft, and the screwdriver head is inserted into the socket of the application end of the application shaft to perform screwing, wherein the application shaft for screwdriver head can be designed to be section-type, and the application shaft can be stretched inside of the connection inner hole of the extension shaft and shaft lever by means of an engaging member fitted to the outer circumference of the extension shaft so that the exposing length is adjustable; in addition, a freely turning sleeve can be mounted between the handgrip and the extension shaft to be a holding supporting point in performing a rapid screwing.

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First Claim