CN204800535U

CN204800535U - Automatic screwdriver

Info

Publication number: CN204800535U
Application number: CN201520429001.8U
Authority: CN
Inventors: 穆昕祺
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-06-18
Filing date: 2015-06-18
Publication date: 2015-11-25
Anticipated expiration: 2025-06-18

Abstract

The utility model discloses an automatic screwdriver, including screwdriver body, screw arbor and handle, the screw arbor sets up inside the screwdriver body, the handle passes through the rotation axis and fixes the one side at the screwdriver body, the epaxial gear that is provided with of screwdriver, the gear both sides are provided with the bearing, the handle passes through the rotation axis and connects the rack. This kind of screwdriver need not charge, and the user as long as hold screw handle of a knife and its handle, aims at the screw with the tool bit when the screw is twisted to needs, draw close the handle to the handle of a knife hard for the rack and the gear intermeshing that are connected with the handle, thus it rotates to make the gear drive the screwdriver axle, twist good back at the screw, the user relieves the handle, replys the spring and will reply initial position with the handle.

Description

A kind of automatic screwdriver

Technical field

The utility model relates to a kind of screwdriver, especially a kind of automatic screwdriver.

Background technology

Traditional screwdriver generally comprises the handle of a knife and knife bar that are fixed together, and knife bar end is provided with the cutter head matched with screw afterbody.Can be divided into a word cutter head and first two type of cross-shaped knife according to structure, the screwdriver of this two type can be subject to the restriction in space when operating.When space is narrower and small, screw cannot be buttressed with hand at all.Also there is various automatic screwdriver on the market, as electric screw driver and pneumatic screw driver etc.Although not by the restriction in space, it is expensive that the price of these screwdrivers all compares, and also needs charging after electricity is finished, not too convenient and economical and practical.

Utility model content

The purpose of this utility model is the above problem overcoming prior art existence, a kind of automatic screwdriver is provided, this screwdriver does not need charging, user is when needs the turn of the screw, as long as hold screwdriver handle and its handle, by cutter head alignment screw, firmly handle is drawn close to handle of a knife, the rack and pinion be connected with handle is engaged each other, thus gear driven screwdriver shaft is rotated; Twist well at screw, user decontrols handle, and handle will be returned to initial position by returning spring.

A kind of automatic screwdriver, comprise screwdriver body, screwdriver shaft and handle, described screwdriver shaft is arranged at screwdriver body interior, described handle is fixed on the side of screwdriver body by rotating shaft, described screwdriver shaft is provided with gear, described screwdriver shaft is provided with bearing at the two ends of screwdriver body interior, and described handle connects tooth bar by rotating shaft.

Further, described tooth bar and screwdriver shaft both sides are provided with tooth bar activity and dodge district, and it is 1mm ~ 5mm that sector width scope is dodged in described tooth bar activity.

Further, be provided with returning spring between described handle and screwdriver body, described returning spring elastic force scope is 3N ~ 30N.

Further, described tooth bar front end is provided with tooth bar clutch, and described tooth bar clutch width range is 2mm ~ 10mm.

Further, described bearing is arranged at the upper and lower two ends of screwdriver shaft.

The beneficial effects of the utility model are:

This screwdriver do not need charging, user when needs the turn of the screw, as long as hold screwdriver handle and its handle, by cutter head alignment screw, firmly handle is drawn close to handle of a knife, the rack and pinion be connected with handle is engaged each other, thus gear driven screwdriver shaft is rotated; Twist well at screw, user decontrols handle, and handle will be returned to initial position by returning spring.

Accompanying drawing explanation

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

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

In figure: district 10 dodged by screwdriver body 1, screwdriver shaft 2, handle 3, rotating shaft 4, returning spring 5, tooth bar clutch 6, bearing 7, gear 8, tooth bar 9, tooth bar activity.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is further described

As shown in Figure 1, a kind of automatic screwdriver, comprise screwdriver body 1, screwdriver shaft 2 and handle 3, it is inner that described screwdriver shaft 2 is arranged at screwdriver body 1, described handle 3 is fixed on the side of screwdriver body 1 by rotating shaft 4, described screwdriver shaft 2 is provided with gear 8, and described screwdriver shaft 2 is provided with bearing 7 at the two ends of screwdriver body 1 inside, and described handle 3 connects tooth bar 9 by rotating shaft 4.

Further, described tooth bar 9 and screwdriver shaft 2 both sides are provided with tooth bar activity and dodge district 10, and it is 1mm ~ 5mm that district 10 width range is dodged in described tooth bar activity.

Further, be provided with returning spring 5 between described handle 3 and screwdriver body 1, described returning spring 5 elastic force scope is 3N ~ 30N.

Further, described tooth bar 9 front end is provided with tooth bar clutch 6, and described tooth bar clutch 6 width range is 2mm ~ 10mm.

Further, described bearing 7 is arranged at screwdriver shaft about 2 two ends.

Specific embodiment:

User is when needs the turn of the screw, as long as hold screwdriver handle and its handle, by cutter head alignment screw, then firmly handle is drawn close to handle of a knife, the rack and pinion be connected with handle is engaged each other, bearing and the gear at the upper and lower two ends of screwdriver shaft also engage each other thereupon, thus auxiliary screwdriver shaft rotates; Twist well at screw, user decontrols handle, and handle will be returned to initial position by returning spring.

The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.

Claims

1. an automatic screwdriver, comprise screwdriver body (1), screwdriver shaft (2) and handle (3), it is characterized in that: it is inner that described screwdriver shaft (2) is arranged at screwdriver body (1), described handle (3) is fixed on the side of screwdriver body (1) by rotating shaft (4), described screwdriver shaft (2) is provided with gear (8), described screwdriver shaft (2) is provided with bearing (7) at the two ends that screwdriver body (1) is inner, described handle (3) connects tooth bar (9) by rotating shaft (4).

2. a kind of automatic screwdriver according to claim 1, it is characterized in that: described tooth bar (9) and screwdriver shaft (2) both sides are provided with tooth bar activity and dodge district (10), and it is 1mm ~ 5mm that district (10) width range is dodged in described tooth bar activity.

3. a kind of automatic screwdriver according to claim 1, it is characterized in that: be provided with returning spring (5) between described handle (3) and screwdriver body (1), described returning spring (5) elastic force scope is 3N ~ 30N.

4. a kind of automatic screwdriver according to claim 1, it is characterized in that: described tooth bar (9) front end is provided with tooth bar clutch (6), described tooth bar clutch (6) width range is 2mm ~ 10mm.

5. a kind of automatic screwdriver according to claim 1, is characterized in that: described bearing (7) is arranged at screwdriver shaft (2) two ends up and down.