CN200970737Y

CN200970737Y - Screw driver with protector

Info

Publication number: CN200970737Y
Application number: CN 200620067835
Authority: CN
Inventors: 李聪; 余莹莹
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-20
Filing date: 2006-11-20
Publication date: 2007-11-07
Anticipated expiration: 2016-11-20

Abstract

The utility mode involves a screwdriver with a pipe pile, including a handle, a rod body, a spring, a pipe pile and a working head, characterized in that the pipe pile and the spring are connected and covered on the rod body of the screwdriver; spring limiting block is provided on the top of the rod body to prevent upward movement of the spring, the rod body can move up and down in the spring and the pipe pile. The utility mode has new structure, the working pressure can balance with the elastic force, and nuts can be screwed discretionarily. The utility mode has simple operation, easy usage, smooth swirling screw, and is fast, reliable and efficient.

Description

A kind of screwdriver with casing

Technical field

The utility model relates to a kind of stress balance screwdriver stably, and particularly a kind of screwdriver that has casing is the improvement that conventional screw is criticized, and belongs to the technical field of daily machine tool.

Background technology

Screwdriver is an indispensable machine tool in people's routine work and the life, and it brings great convenience for people's life.On the market screwdriver, miscellaneous, straight formula is arranged, have exchange working head or the like, have their own characteristics each, but all exist common defective, be exactly people when screwing on screw with screwdriver, hand must protect screw, is pressed at leisure by the object of last nail, and sometimes when the screw of last length, because nail length, disequilibrium easily, therefore be difficult to go up nail, particularly during the screw on last ceiling, operating difficulties, instability, inefficiency, the people is also tired easily.

Summary of the invention

The purpose of this utility model provides a kind of screwdriver with casing, and it connects together spring and casing, packs on the screwdriver body of rod, again screw is put into casing, the nail of at random can tightening up a screw everywhere reaches simple to operate, easy to use, on follow closely reliable and stable effect.

The technical solution of the utility model

A kind of screwdriver with the casing type comprises handle, the body of rod, spring, casing, working head, it is characterized in that being inserted in spring and casing on the screwdriver body of rod, and casing is connected with spring, after be enclosed within again on the body of rod of screwdriver; On the body of rod, be provided with bayonet socket, spring one end be fixed on the body of rod by bayonet socket.And spring upper end is owing to fixed by bayonet socket, and spring moves upward in the time of can preventing work like this.The diameter of described casing and length match with the size of screw, promptly can put into the screw of being screwed in the casing, and the length of casing is greater than the length of screw.During work, the body of rod moves up and down in spring and casing, is convenient to the working head housing screw of screwdriver, and then screw threads is screwed in the object.The working head of screwdriver can be provided with the casing screwdriver of " ten " word or " one " font according to actual needs, differs according to screw ailhead diameter, can produce the different casing screwdriver of circular diameter in the different sizes.

Advantage of the present utility model

Compare with passing screwdriver, the equilibrium principle of the utility model adhesion makes elastic force and operational forces be equilibrated at one.Simple in structure, screwing is quick, reliable, stable, firm practicality, and is easy to use, simple to operate.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the spring of the present utility model schematic diagram that combines with casing.

The specific embodiment

Shown in 1～2 figure, among left Fig. 1, on screwdriver, be provided with handle 1, spring fixedly bayonet socket 2, spring 3, the screwdriver body of rod 4, casing and spring connecting portion 5, casing 6, working head 7.When screwdriver is not worked since spring 3 elastic reactions under, casing 6 is pushed away downwards, and the screwdriver body of rod 4 upwards shrinks, at this moment the casing body exceeds working head 7, form the sleeve that to put into screw 8, the length that sleeve stretches out can be put into the length of screw 8 fully, and casing 6 internal diameters are a bit larger tham the diameter of screw 8, like this use more reliable, screw 8 can be fixed in the casing, by connecting portion 5 spring 3 and casing 6 are combined, make casing under the spring force effect, move up and down along the body of rod.When work, human is defeated working handle 1 (it is in order to increase friction that decorative pattern is arranged on the shank), casing 6 nozzles are pressed in object 9 surfaces because the screwdriver body of rod 4 can move up and down, under the effect of power, make spring 3 produce elastic deformations and shorten, shorten the length that length equals to stretch out casing, like this, working head 7 promotes to be placed on the interior screw 8 of casing 6 and it is pressed on 9 on the object because of stressed, screw screw 8 by screwdriver then, like a cork screw 8 is screwed in object 9 inside.

When last intact screw, when casing 6 left object 9 surfaces, under the effect of spring 3 elastic force, spring 3 restored to the original state, and forms the casing space of stretching out working head.

In addition, will go up than the screw in the dell time when the casing screwdriver, operating principle is the same, 6 mouthfuls of screwdriver casings are pressed on the dell face, and under the downward force effect, the screwdriver body of rod 4 is pressed in the dell, therefore working head 7 and the interior screw joint of dell can screw in screw or back-out.When finishing, at this moment spring 3 restores to the original state, and forms and stretches out the surplus sleeve volume.Easy and simple to handle during work, convenient and reliable, quick rapidly, the while has also solved the difficulty of screwing on ceiling, reaches steadily the effect of stressed effect balance.

In Fig. 2, spring 3 combines together with casing by connecting portion 5, and is steadily stable.

Claims

1. the screwdriver with casing comprises handle, the body of rod, spring, casing and working head, it is characterized in that putting casing (6) and spring (3) on the body of rod (4) of screwdriver, casing (6) be enclosed within again on the body of rod (4) of screwdriver after spring (3) is connected.

2. the screwdriver of band casing according to claim 1 is characterized in that being provided with bayonet socket (2) on the body of rod (4), by bayonet socket (2) spring (3) one ends are fixed on the body of rod (4).

3. the screwdriver of band casing according to claim 1 is characterized in that the diameter of casing (6) and length match with the size of screw (8), promptly can put into the screw of being screwed in the casing, and the length of casing is greater than the length of screw.

4. the screwdriver of band casing according to claim 1 is characterized in that the working head (7) of screwdriver is " ten " word or " one " font.