CN2308482Y

CN2308482Y - One-hand-operated screwdriver

Info

Publication number: CN2308482Y
Application number: CN 97221341
Authority: CN
Inventors: 邱建
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-07-18
Filing date: 1997-07-18
Publication date: 1999-02-24
Anticipated expiration: 2007-07-18

Abstract

The utility model relates to a one-hand-operated screwdriver. A tool shank is divided into a grab handle and a tapping handle which are mutually separated. The grab handle is provided with a hollow inner cavity, and the end of the inner cavity is provided with an annular groove; a position clamping retainer ring is arranged in the annular groove, and the position clamping retainer ring which is held by the annular groove can rotate in the annular groove without pushing out. The front end part of a tool bar orderly passes through the tapping handle and the position clamping retainer ring, and the front end part of the tool bar is inserted into the hollow inner cavity of the grab handle; the tapping handle and the position clamping retainer ring are both fixedly connected with the tool bar. The utility model has the advantages that when a screw is twisted by one hand, the tool bar can continuously rotate towards one direction without changing the position of the hand.

Description

The screwdriver of one-handed performance

The utility model relates to screwdriver, refers in particular to a kind of screwdriver of one-handed performance.

Screwdriver is used to load and unload screw, screw, the handle of a knife of traditional screwdriver is fixedlyed connected with knife bar, like this when operation, if, so whenever twist with singlehanded the turn of the screw nail, pine once screwdriver make hand change a upper/lower positions, so that can continue to back out towards a direction all the time, therefore when practical operation, for this simple action of the turn of the screw, two hands of also having to are operated simultaneously just and can be finished.

The purpose of this utility model is to provide a kind of screwdriver of one-handed performance, during operation, with the centre of the palm of one hand when lever is exerted pressure, finger just can rotate the tapping handle, palm does not need to shift one's position, finger can allow knife bar rotate continuously towards a direction all the time, makes the screw precession desire to realize the purpose of one-handed performance the turn of the screw in the fixture.

The purpose of this utility model is achieved through the following technical solutions:

A kind of screwdriver of one-handed performance, it includes handle of a knife, knife bar and cutter head, handle of a knife has the inner chamber of hollow, be used for placing the leading section of knife bar, the end of knife bar is connected with cutter head, it is characterized in that: handle of a knife is divided into two parts, a part is a lever, another part is the tapping handle, lever and tapping handle are separated from each other, described lever has the inner chamber of hollow, and this inner chamber end is provided with an annular groove, and a screens back-up ring is housed in this annular groove, this screens back-up ring is by described annular groove clamping, and can in described annular groove, rotate and do not deviate from, the knife bar leading section passes described tapping handle and described screens back-up ring successively and inserts in the inner chamber of lever hollow, and the leading section of knife bar is made into sharp cone distal, the position of the leading section of close described knife bar sharp cone distal is provided with an arcs of recesses iron plate in the lever inner chamber, and described tapping handle is all fixedlyed connected with described knife bar with the screens back-up ring.

The end of described lever is provided with a screw blanking cover, and this screw blanking cover is positioned the screens back-up ring in the annular groove of lever.

Adopt lateral pin to be connected between described tapping handle and the described knife bar.

Adopt between described screens back-up ring and the knife bar and be threaded.

The described cutter head that is connected with knife bar is magnetic.

The utility model has following actively useful effect:

1. because handle of a knife is divided into lever and tapping handle, therefore, the centre of the palm is when lever is exerted pressure, point the tapping handle on the rotatable knife bar, knife bar is rotated down towards a direction continuously, thereby allow the screw precession desire in the fixture, overcome the drawback of the position of the change hand that traditional screwdriver need not stop when one-handed performance, when therefore following closely with screwdriver the turn of the screw of the present utility model, only need one-handed performance that knife bar is rotated down towards a direction continuously, accelerate the speed of the turn of the screw greatly.

2. when twisting when getting rusty screw,, can return lever earlier, need not withdraw from cutter head, and catch lever and tapping handle with whole hand again, as using old-fashioned screwdriver to operate, with the strength of increase precession if the strength of finger is not enough.

Now be described in further detail as follows with preferred embodiment the utility model in conjunction with the accompanying drawings:

Fig. 1 is a structural representation of the present utility model, is cutaway view.

The screwdriver of one-handed performance of the present utility model, it includes handle of a knife 1, knife bar 2 and driver bit 3, handle of a knife 1 has the inner chamber of hollow, be used for placing the leading section of knife bar 2, the end of knife bar 2 is connected with driver bit 3, handle of a knife 1 is divided into two parts, a part is a lever 11, another part is a tapping handle 12, lever 11 is separated from each other with tapping handle 12, described lever 11 has the inner chamber 111 of hollow, these inner chamber 111 ends are provided with an annular groove 112, one screens back-up ring 21 is housed in this annular groove 112, this screens back-up ring 21 is by described annular groove 112 clampings, and can in annular groove 112, rotate and do not deviate from, the leading section of knife bar 2 passes tapping handle 12 and screens back-up ring 21 successively and inserts 111 li of the inner chambers of lever hollow, knife bar 2 is shaped on the leading section 22 of sharp cone distal, the position of the leading section 22 of close knife bar 2 sharp cone distal in lever inner chamber 111, be provided with an arcs of recesses iron plate 113, with the leading section 22 of the sharp cone distal of replacing knife bar 2, and reduce frictional force between leading section 22 and the lever inner chamber 111, described tapping handle 12 is all fixedlyed connected with knife bar 2 with screens back-up ring 21.

In preferred embodiment, the lower end of described lever 11 is provided with screw blanking cover 13 and screens back-up ring 21 is positioned in the annular groove 112 of lever.Adopt lateral pin 121 to be connected between described tapping handle 12 and the described knife bar 2.Adopt screw thread 23 to be connected between described screens back-up ring 21 and the knife bar 2.The described cutter head 3 that is connected with knife bar 2 is magnetic so that adsorb screw when operation.

Claims

1. the screwdriver of an one-handed performance, it includes handle of a knife, knife bar and cutter head, handle of a knife has the inner chamber of hollow, be used for placing the leading section of knife bar, the end of knife bar is connected with cutter head, it is characterized in that: handle of a knife is divided into two parts, a part is a lever, another part is the tapping handle, lever and tapping handle are separated from each other, described lever has the inner chamber of hollow, and this inner chamber end is provided with an annular groove, and a screens back-up ring is housed in this annular groove, this screens back-up ring is by described annular groove clamping, and can in described annular groove, rotate and do not deviate from, the knife bar leading section passes described tapping handle and described screens back-up ring successively and inserts in the inner chamber of lever hollow, and the leading section of knife bar is made into sharp cone distal, the position of the leading section of close described knife bar sharp cone distal is provided with an arcs of recesses iron plate in the lever inner chamber, and described tapping handle is all fixedlyed connected with described knife bar with the screens back-up ring.

2. the screwdriver of one-handed performance as claimed in claim 1, it is characterized in that: the end of described lever is provided with a screw blanking cover, and this screw blanking cover is positioned the screens back-up ring in the annular groove of lever.

3. the screwdriver of one-handed performance as claimed in claim 1 is characterized in that: adopt lateral pin to be connected between described tapping handle and the described knife bar.

4. the screwdriver of one-handed performance as claimed in claim 1 is characterized in that: adopt between described screens back-up ring and the described knife bar to be threaded.

5. the screwdriver of one-handed performance as claimed in claim 1, it is characterized in that: the described cutter head that is connected with knife bar is magnetic.