CN103753463A

CN103753463A - Grip drive type screwdriver

Info

Publication number: CN103753463A
Application number: CN201410002355.4A
Authority: CN
Inventors: 毛鹏军; 丁月华; 张伏; 邱兆美; 王俊; 张松泓
Original assignee: Henan University of Science and Technology
Current assignee: Henan University of Science and Technology
Priority date: 2014-01-03
Filing date: 2014-01-03
Publication date: 2014-04-30
Anticipated expiration: 2034-01-03
Also published as: CN103753463B

Abstract

The invention relates to the field of mechanical disassembling tools, in particular to a grip drive type screwdriver. The grip drive type screwdriver comprises a holder and a toolbar. The toolbar is rotationally assembled on the holder, racks are radially assembled on the holder, unidirectional transmission wheels which correspond to the racks are assembled on the toolbar and include a forward transmission wheel and a reverse transmission wheel, the forward transmission wheel and the reverse transmission wheel are axially arranged along the toolbar, a transmission direction of the forward transmission wheel is opposite to a transmission direction of the reverse transmission wheel, and when one of the forward transmission wheel and the reverse transmission wheel is meshed with the corresponding rack, the other transmission wheel and the rack corresponding to the other transmission wheel are axially staggered from each other along the toolbar. The grip drive type screwdriver has the advantages that a user only needs to grip the holder by a hand when using the screwdriver, the toolbar axially relatively moves, and the turning direction of the toolbar can be changed, so that a head of the toolbar does not need to be changed when screws are screwed down of screwed off, and the grip drive type screwdriver is quite convenient.

Description

Hold drive-type screwdriver

Technical field

The present invention relates to mechanical dismantling device field, particularly relate to a kind of drive-type screwdriver of holding.

Background technology

Screw is one of securing member being most widely used at present.No matter be on large-scale equipment, or on some small household appliances such as TV, refrigerator, washing machine, or be on some electric components such as circuit board and on furniture, the figure of screw is seen everywhere.

Screwdriver is applicable to screw and the instrument of loosening screw, and along with the continuous variation of screw, screwdriver is also one everywhere among development.Initial screwdriver comprises knife bar and handle of a knife two parts, and between knife bar and handle of a knife, arc is fixed, and when in use, operator holds handle of a knife, by the forward and reverse rotation handle of a knife of the axis around knife bar, realizes the corresponding operating to screw.Clearly, this screwdriver exists ineffective problem, and in addition, in some little space situations, because the hand that does not have enough spaces for operator moves around, the use of above-mentioned screwdriver will seem and more require great effort and difficulty.

Electronic, pneumatic screw driver obviously can greatly be increased work efficiency, but need to be equipped with special-purpose power source during its work, not only cost is higher, and use occasion also can be limited, therefore, current electronic, pneumatic screw driver is most is to be used to the places such as factory and professional repair shop, it is also not suitable for universal family expenses.

By contrast, notification number is that the Chinese patent of CN202716198U discloses a kind of hand held screwdriver, this hand held screwdriver comprises knife bar and handle of a knife, different from conventional screw-driver in order is, the knife bar of this hand held screwdriver is to rotate to be assemblied in handle of a knife, in addition, on handle of a knife, be also radially provided with tooth bar, the outer end of tooth bar, the one end of exposing outside handle of a knife is provided with pressure cap, between pressure cap and handle of a knife, be top-loaded with back-moving spring, the place, one end that is arranged in handle of a knife of knife bar is equipped with freewheel clutch, and freewheel clutch and tooth bar intermesh.When in use, by holding described pressure cap, just can drive freewheel clutch and knife bar to rotate by tooth bar, thereby complete screw be screwed or unscrew work.

Above-mentioned hand held screwdriver only needs manually to provide power in use, relatively be applicable to family expenses, but because its tooth bar only can order about knife bar around a direction rotation, therefore want to tighten screw, can unscrew screw again, knife bar must be made as to separate form, by the head that changes of knife bar, (switch at the two at handle of a knife) is installed realizes, still exist awkward problem.

Summary of the invention

The object of the present invention is to provide a kind of knife bar not change head installs and can tighten and unscrew screw, the easy to use drive-type screwdriver of holding.

In order to address the above problem, of the present inventionly hold drive-type screwdriver by the following technical solutions: hold drive-type screwdriver, comprise handle of a knife and knife bar, knife bar rotates and is assemblied on handle of a knife, on handle of a knife, be radially equipped with tooth bar, on knife bar, be equipped with the one-way transmission wheel corresponding with tooth bar, described one-way transmission wheel comprises along knife bar forward drive axial arranged, that transmission direction is contrary and reverse drive wheel, in forward drive and reverse drive wheel one is during with corresponding tooth bar engagement, another and corresponding tooth bar axially staggering each other along knife bar.

Knife bar is telescopic being assemblied on handle of a knife vertically, described tooth bar and handle of a knife knife bar axially on Anti-moving coordinate.

Described tooth bar is all parallel to each other, and the tooth bar that is positioned at place, knife bar the same side connects by same pressure cap.

Each one-way transmission wheel is to there being two tooth bars, and when with corresponding one-way transmission wheel engagement, two tooth bars corresponding with same one-way transmission wheel are parallel to each other and be positioned at the place, radially both sides of corresponding one-way transmission wheel.

One-way transmission wheel is flywheel.

Because this one-way transmission wheel of holding drive-type screwdriver comprises forward drive and the reverse drive wheel that transmission direction is contrary, and knife bar is flexible being assemblied on handle of a knife vertically, in forward drive and reverse drive wheel one is during with corresponding tooth bar engagement, another and corresponding tooth bar axially staggering each other along knife bar, therefore, when in use, can first make forward drive and corresponding tooth bar engagement, by corresponding rack drives forward drive, rotate, and then drive knife bar forward rotation, now, not transmission that reverse drive is taken turns and corresponding tooth bar staggers each other, when needs knife bar rotates backward, can make reverse drive wheel and corresponding tooth bar engagement, now forward drive staggers with corresponding tooth bar, hence one can see that, in using the process of this screwdriver, only needing to hold handle of a knife makes knife bar move axially relatively the just rotation direction of changeable knife bar, therefore when tightening and unscrew screw, without knife bar being changed to head, install, very convenient.

Further, the tooth bar that two parallel to each other and whens engagement are positioned at place, single-direction transmission wheel radial both sides is set and is conducive to the stress balance of one-way transmission wheel, and then reduce the possibility of the oppressed distortion of knife bar; It is in order to increase the comfortableness of operation that the tooth bar that is positioned at knife bar the same side is connected by pressure cap.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of holding the embodiment of drive-type screwdriver;

Fig. 2 is the transmission schematic diagram of forward drive and respective rack;

Fig. 3 is the transmission schematic diagram of reverse drive wheel and respective rack.

The specific embodiment

Hold the embodiment of drive-type screwdriver, as Figure 1-3, this is held drive-type screwdriver and comprises handle of a knife 11 and knife bar 12.

The boring structure of handle of a knife 11, knife bar 12 rotates and is assemblied on handle of a knife 11 and can in handle of a knife 11, stretches vertically, its place, one end that is arranged in handle of a knife 11 is equipped with one-way transmission wheel, in an embodiment, one-way transmission wheel adopts is flywheel and has two, and two one-way transmission wheels are along the axially spaced-apart setting of knife bar 12 and be divided into forward drive 13 and the reverse drive wheel 14 that transmission direction is contrary.

On handle of a knife 11, be radially equipped with tooth bar 15, tooth bar 15 corresponding with one-way transmission wheel and with handle of a knife 11 knife bar 12 axially on Anti-moving coordinate, wherein each one-way transmission wheel correspondence two tooth bars, two tooth bars corresponding with same one-way transmission wheel are parallel to each other, when with corresponding one-way transmission wheel engagement, corresponding to two tooth bars of this one-way transmission wheel, be divided into the place, radially both sides of this one-way transmission wheel.In fact, in the present embodiment, all tooth bars 15 are all parallel to each other, and the tooth bar that is positioned at knife bar the same side links together by pressure cap 16, between pressure cap 16 and handle of a knife 11, be top-loaded with back-moving spring (not shown)) when pressing pressure cap 16, the rack synchronous motion being attached thereto.

In addition, due to tooth bar 15 and handle of a knife 11 knife bar 12 axially on Anti-moving coordinate, being positioned at the distance that the tooth bar of knife bar 12 the same sides makes progress at cutter spindle determines, in forward drive 13 and reverse drive wheel 14 one is during with corresponding tooth bar engagement, another and corresponding tooth bar axially staggering each other along knife bar 12.

Using this to hold in the process of drive-type screwdriver, when needs tighten the screws follow closely, make forward drive and corresponding tooth bar mesh, now by holding, press pressure cap and can drive knife bar to be rotated in the forward clockwise; When needs are unscrewed screw, can make reverse drive wheel and corresponding tooth bar engagement by relative sliding vertically between handle of a knife and knife bar, the switching between two kinds of duties is very convenient.

In holding other embodiment of drive-type screwdriver, one-way transmission wheel can also adopt freewheel clutch wheel.

Claims

1. hold drive-type screwdriver, comprise handle of a knife and knife bar, knife bar rotates and is assemblied on handle of a knife, on handle of a knife, be radially equipped with tooth bar, on knife bar, be equipped with the one-way transmission wheel corresponding with tooth bar, it is characterized in that, described one-way transmission wheel comprises along knife bar forward drive axial arranged, that transmission direction is contrary and reverse drive wheel, in forward drive and reverse drive wheel one is during with corresponding tooth bar engagement, another and corresponding tooth bar axially staggering each other along knife bar.

2. the drive-type screwdriver of holding according to claim 1, is characterized in that, knife bar is telescopic being assemblied on handle of a knife vertically, described tooth bar and handle of a knife knife bar axially on Anti-moving coordinate.

3. the drive-type screwdriver of holding according to claim 2, is characterized in that, described tooth bar is all parallel to each other, and the tooth bar that is positioned at place, knife bar the same side connects by same pressure cap.

4. according to holding drive-type screwdriver described in claim 1-3 any one, it is characterized in that, each one-way transmission wheel is to there being two tooth bars, when with the engagement of corresponding one-way transmission wheel, two tooth bars corresponding with same one-way transmission wheel are parallel to each other and be positioned at the place, radially both sides of corresponding one-way transmission wheel.

5. according to holding drive-type screwdriver described in claim 1-3 any one, it is characterized in that, one-way transmission wheel is flywheel.