CN2790686Y - Screwdriver - Google Patents

Abstract

The utility model relates to a screwdriver which is provided with a handle and a screwdriver rod, wherein a rotary object which can freely rotate relative to the handle is arranged on the handle. When used, the utility model has the advantages of remote possibility of wearing a palm and labor saving.

Description

A kind of screwdriver

Affiliated technical field

The utility model relates to a kind of palm not easy to wear, labour-saving screwdriver.

Background technology

The normal screws cutter generally is made up of handle and knife bar.In use, commonly used is one-handed performance, at first is to hold handle with palm, rotates wrist then, screwdriver is and then rotated together, when wrist can not be rotated again, palm release handle but still holding its to keep balance of screwdriver was done gyration with respect to handle simultaneously, so that wrist is rotated back into the origin-location, so that twist screwdriver once more, nature will produce friction between palm and the handle like this, and palm easily weares and teares.Owing between handle and palm a bigger coefficient of friction is arranged, palm overcomes the used power of friction when wrist is turned round also just corresponding bigger simultaneously, therefore uses also effort.

Summary of the invention

In order to overcome wear and tear the easily in use deficiency of palm and effort of normal screws cutter, the utility model provides a kind of palm not easy to wear, labour-saving screwdriver.

The technical scheme that its technical problem that solves the utility model adopts is: a gig that can freely rotate with respect to handle is set on screw driver handle.When concrete operations, palm with handle and on gig together hold, when wrist need be turned round, its gig of holding just can go back to wrist as long as palm rotates, between handle and gig owing to can rotate relatively freely, so handle still can rest on the position that has forwarded to, and can not turn round with wrist, and palm is to hold gig all the time in the wrist turning course, do not relatively rotate between the two and rub, relatively rotate and friction is to occur between handle and the gig, thereby palm is difficult for being worn.Simultaneously since the coefficient of friction between handle and gig less than the coefficient of friction between handle and palm, palm overcomes the used power of friction when wrist turn round also just less relatively, so just laborsaving than the normal screws cutter in use.

The beneficial effects of the utility model are palm not easy to wear, laborsaving.

Below in conjunction with drawings and Examples the utility model is further specified.

An embodiment of the present utility model sees accompanying drawing.

Accompanying drawing is the structure chart of embodiment.

Among the figure 1, handle, 2, knife bar, 3, gig.

The specific embodiment

In the drawings, gig (3) is positioned on the handle (1), and it can freely rotate with respect to handle (1), and an end of handle (1) is equipped with knife bar (2).When concrete operations, palm is together held handle (1) and gig (3), rotate wrist then, screwdriver is rotated together, when wrist can not be rotated again, palm turns round its gig of holding (3), just wrist is got back to the origin-location, gig (3) and handle (1) are owing to can rotate relatively freely, the knife bar (2) of handle (1) and one end still can rest on the position that has forwarded to and not turn round with wrist, then rotates wrist again, and screwdriver is rotated further, circulation so repeatedly is until achieving the goal.

Claims (1)

1. A kind of screwdriver has handle, knife bar, it is characterized in that: the gig that can freely rotate with respect to handle is arranged on handle.