CN2140290Y

CN2140290Y - Screwdriver

Info

Publication number: CN2140290Y
Application number: CN 92225548
Authority: CN
Inventors: 余祖良
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-25
Filing date: 1992-06-25
Publication date: 1993-08-18
Anticipated expiration: 2002-06-25

Abstract

The utility model relates to a screwdriver with double purposes, which mainly comprises a handle and a screw shaft with two different structural forms screw heads or different specifications screw heads. The middle part of the screw shaft is provided with a couple of symmetrical radial wings. The middle part of the screw shaft where is relative to the radial wings is provided with a couple of symmetrical slots. On the handle is provided with an axial through hole with symmetrical radial slot. The two ends of the handle are respectively provided with a locking device for the screw shaft. The screwdriver of the utility model is provided with two specifications screw heads, and the exchange of the screw heads is rapid and simple. The utility model has the advantages of low cost and easy manufacture.

Description

Screwdriver

The utility model relates to a kind of screwdriver, the particularly a kind of screwdriver that can change two kinds of difformities or different size screw terminal.

Existing screwdriver has single specification, and the screwdriver of multiple function is also arranged, though the screwdriver cost of single specification is low, processing and manufacturing is simple, uses inconvenient.Though and the screwdriver of multiple function is easy to use, the cost height is made also complicated.

The purpose of this utility model is to provide a kind of cost low.Make the screwdriver that simply can change two kinds of difformities or different size screw terminal.

Screwdriver provided by the utility model is made up of lead screw and handle, the lead screw two ends are made the screw terminal of difformity or different size respectively, the lead screw middle part is provided with a pair of symmetrical radial wings, and be provided with a pair of symmetrical groove with respect to the radial wings both sides in the middle, neither one has the axially extending bore of symmetrical radial slot on the handle, lead screw is contained in this through hole axially slidably, and a lead screw locking device is respectively established at the handle two ends.Can change the screw terminal of two kinds of difformities or different size easily by locking device, also can resemble and use freely the screwdriver of single specification.

Screwdriver of the present utility model has the screw terminal of two kinds of specifications, and the transposing of screw terminal is simple rapidly, cost is low, processing and manufacturing is simple.

Fig. 1 is the main cutaway view of first kind of embodiment of screwdriver of the present utility model;

Fig. 2 is the main cutaway view that second kind of embodiment of screwdriver arranged of the present utility model;

Fig. 3 is the main cutaway view of the third embodiment of screwdriver of the present utility model;

Fig. 4 is along Fig. 1, center line A-A cut open sectional view;

Fig. 5 is along Fig. 1, the sectional view that center line B-B cuts open.

Below in conjunction with accompanying drawing, several embodiment of screwdriver of the present utility model are done auspicious description.

Fig. 1,4 and 5 is the basic model of screwdriver of the present utility model.It is made up of lead screw 1 and handle 2.Lead screw 1 is connected with handle 2 slidably, and lead screw 1 can be pinned or untied with respect to the handle worker by locking device 3,4.The two ends of lead screw 1 be designed to two kinds of difformities or different size screw terminal, be provided with a symmetrical

radial wings

5,6 in the middle, and be provided with respect to

radial wings

5,6 both sides on a

symmetrical groove

11,12, the handle 2 at lead screw 1 middle part and be provided with an axially extending bore 9 that has symmetrical radial slot 7,8.The lead screw 1 that has symmetrical

radial wings

5,6 by means of cooperating of

radial wings

5,6 and

radial slot

7,8, is only slided in the axially extending bore 9 of handle 1 and is not rotated.Respectively establish a lead screw 1

locking device

3,4 at the two ends of handle 2.This

locking device

3,4 comprises button 15, spring 16 and plate 17, plate 17 is fixedlyed connected with button 15, plate 17 be provided with one with the corresponding circular hole 18 of lead screw 1 diameter, have a

symmetrical notch

19,20 on this circular hole 18, following notch 20 is darker than last notch 19, a counterbore 21 is radially respectively established at handle 2 two ends, and radially counterbore 21 bottoms have a radial slot 22 perpendicular to handle 2 axis, is provided with compression spring 16 between counterbore 21 bottoms and button 15.When lead screw 1 is slided in handle 2, because the thickness of plate 17 is slightly less than

groove

11,12 width, when plate 17 is in the

groove

11,12 at lead screw 1 middle part under the effect of compression spring 16, plate 17 move up and

insertion groove

11,12 in, thereby block lead screw 1 it can not be slided front and back, so that use.As will change screw terminal the time, only need press the button 15 when circular hole 18 centers on the plate 17 are overlapped with lead screw 1 axis, plate 17 is thrown off with

groove

11,12, release lead screw 1 backward this moment, when lead screw 1

intermediate channel

11,12 moves on to plate 17 places on the button 15 of the handle other end, compressed spring 16 make plate 17 move up and

insertion groove

11,12 in, thereby block lead screw 1.

Figure 2 shows that second kind of embodiment of the present utility model, in this embodiment, when lead screw 1 locks at the locked device 3 of left end, wherein have a radial wings 6a not shift out 2 handles 2, the block 24 that the end face of this radial wings 6a is fixed on the handle 2 blocks.When lead screw 1 locks at the locked device 4 of right-hand member, wherein have a radial wings 5a not shift out handle 2, the block 24 that the end face of this radial wings 5a is fixed on the handle 2 blocks.Described block 24 is provided in a side of on the direction of 2 liang of end peripheries of handle, radial slot 7 or 8.Other structure and first kind of embodiment of the present utility model are identical.

Figure 3 shows that the third embodiment of the present utility model, in this embodiment.Lead screw 1 about end when locked, two

radial wings

5b, 6b all do not shift out handle 2, the block 24 that has at least the end face of a radial wings to be fixed on the handle 2 at an end of handle 2 blocks.The other end of handle 2 is not penetrated by radial slot 7a/, 8a, and it is in order to stop radial wings 5b, the 6b on the lead screw 1.Other structure and first kind of embodiment of the present utility model are identical.

Claims

1, a kind of screwdriver, it is made up of lead screw and handle, it is characterized in that the lead screw two ends are the screw terminal of two kinds of difformities or different size, the lead screw middle part is provided with a symmetrical radial wings, and in the middle part of lead screw, be provided with a symmetrical groove with respect to the radial wings both sides, handle is provided with an axially extending bore that has symmetrical radial slot, and a lead screw locking device is respectively established at the handle two ends.

2, screwdriver according to claim 1, it is characterized in that described locking device is made up of button, spring, plate, plate is fixedlyed connected with button, one circular hole is arranged on this plate, this circular hole matches with lead screw, and circular hole open a symmetrical notch up and down, and notch is darker than last notch down.

3, screwdriver according to claim 1 and 2, it is characterized in that described handle two ends respectively establish a counterbore radially, this radially has a radial slot perpendicular to handle axis in the counterbore bottom, described counterbore cooperates with described button, described radial slot cooperates with described plate, and is provided with the compression spring between counterbore bottom and button.

4, screwdriver according to claim 3 is characterized in that described lead screw when the locked device of left end locks, and wherein at least one radial wings does not shift out handle, and the block that the end face of this radial wings is fixed on the handle blocks.

5, screwdriver according to claim 4 is characterized in that described lead screw when the locked device of right-hand member locks, and wherein at least one radial wings does not shift out handle, and the block that the end face of this radial wings is fixed on the handle blocks.

6, screwdriver according to claim 3 is characterized in that lead screw when left end is locked, and two radial wings all do not shift out handle, and wherein the block that is fixed on the handle of the end face of at least one radial wings blocks.

7, screwdriver according to claim 6, it is characterized in that handle is provided with an axial hole that has symmetrical radial slot, described symmetrical radial slot does not penetrate an end face of handle on the axis direction of axial hole, so that stop the radial wings on the lead screw.