CN205136294U

CN205136294U - Screw

Info

Publication number: CN205136294U
Application number: CN201520908184.1U
Authority: CN
Inventors: 范康康
Original assignee: Electrical Equipment Alloy Industrial Co Ltd Of Wenzhou Tie Tong
Current assignee: Electrical Equipment Alloy Industrial Co Ltd Of Wenzhou Tie Tong
Priority date: 2015-11-14
Filing date: 2015-11-14
Publication date: 2016-04-06
Anticipated expiration: 2025-11-14

Abstract

The utility model discloses a screw, including the integrative screw head of making and screw pole, first recess has been seted up to the screw head, has seted up the second recess in first recess, the second recess is equipped with the dustproof sheet that is used for covering this second recess, and is equipped with in the second recess and makes the dustproof sheet to first recess direction movement tendency's elastic component, is suitable for multiple different models, the wrong of different specification screwdrivers moves, and gathering of dust is avoided to the second recess under the cover of dustproof sheet, improved screw's life and enlarged application scope.

Description

A kind of screw

Technical field

The utility model relates to a kind of screw.

Background technique

Screw is one of the most frequently used secure component, applies all to some extent at numerous areas such as mechanical engineering, electrical equipment, medical apparatuss.Screw common in prior art is with the screw head of groove and a threaded cylinder or conical metallic screw bar to form by one, and screw head and screw rod are generally and are wholely set.Utilize screw-driver to be inserted in groove and turn screw head, drive the rotation of screw rod.

The groove that existing screw head is offered is generally cross recess or straight groove, and groove only offers one, so just define and only have a kind of screw-driver of specification install screw or dismantle, and then present designer is for solving the problem, screw at the screw-driver offering the another kind of specification size of another groove confession in original groove, and screw is generally exposedly easily cause at groove inner accumulated dust because this little groove is offered in the external world, this groove can be blocked when these dusts reach a certain amount of, thus the screw-driver of small dimension just cannot be utilized the installation of this screw or dismounting, lose the object of original this groove of design.

Model utility content

For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of screw-driver being applicable to different size size carry out screwing and have the screw of dust-proof effect.

For achieving the above object, the utility model provides following technological scheme: a kind of screw, comprise the screw head and screw rod that are made into integration, described screw head offers the first groove, the second groove is offered in the first groove, described second groove is provided with the dustproof sheet for covering this second groove, and in the second groove, be provided with the elastic component making dustproof sheet to the first groove direction movement tendency.

By adopting technique scheme, first groove and the second groove offer the screw-driver being suitable for different size size, second groove arranges dustproof sheet avoid exposedly for a long time accumulating dust in the external world, and by second groove arrange elastic component at use the second groove time screw-driver back down dustproof sheet rotating screw, can automatically reset after using.

As preferably, the surface of described dustproof sheet is coated with wearing layer.

By adopting technique scheme, due to when use second groove rotating screw, screw-driver needs to head on dustproof sheet and rotates, and arranges wearing layer raising dustproof sheet wear resistance on dustproof sheet surface, and then improves the working life of dustproof sheet.

As preferably, described second groove is the first straight groove or the first cross recess.

By adopting technique scheme, be suitable for the screw-driver of different model.

As preferably, described elastic component is at least provided with 1.

By adopting technique scheme, the quantitative restriction of elastic component can regulate dustproof sheet reseting procedure to reply speed.

As preferably, described first groove is the second cross recess, and wherein the second cross recessed groove gets through formation second straight groove in the radial direction at screw head.

By adopting technique scheme, make the first groove can be suitable for the screw-driver of two kinds of different models.

As preferably, two ports of described second straight groove comprise the arc shaped surface that the stress surface perpendicular to screw head is connected with stress surface.

By adopting technique scheme, due to when turning screw head, the screw-driver of flat head is adopted to be inserted in straight groove, screw cutter needs to abut on stress surface and drives screw turns, and the area that the cutter head of screw-driver really contacts with stress surface is on bottom, thus make the stress surface of upper part play an inhibition to screwing screw head on the contrary, and then remove discontiguous a part of face with driver bit and be arranged to arc shaped surface, and then improve the Effective power turning screw terminal, secondly a stress of the original seamed edge of minimizing is concentrated and is caused cracking phenomena.

As preferably, the surface of described screw is coated with anticorrosion enamelled coating.

By adopting technique scheme, screw belongs to the one of fixed block, is exposed in the external world for a long time, gets rusty easily, and is coated with the corrosion resistance that anticorrosion enamelled coating improves screw from the teeth outwards.

Compared with prior art, the utility model has the advantage of: turning of applicable multiple different model, different size screw-driver, the second groove avoids gathering of dust under the covering of dustproof sheet, improves the working life of screw and expands applicable situation.

Accompanying drawing explanation

Fig. 1 is the structural representation one of screw;

Fig. 2 is the structural representation two of screw;

Fig. 3 is the structural representation of screw removing dustproof sheet;

Fig. 4 is the sectional view of screw;

Fig. 5 is the A portion enlarged view of Fig. 4.

Accompanying drawing illustrates: 10, screw; 20, screw head; 21, the first groove; 22, the second straight groove; 221, stress surface; 222, arc shaped surface; 23, the second groove; 24, elastic component; 25, dust-proof; 26, wearing layer; 30, screw rod.

Embodiment

Be described in further detail model utility by specific embodiment below in conjunction with accompanying drawing, following examples are descriptive, be not determinate protection domain of the present utility model.

Embodiment one

Composition graphs 1 to Fig. 3, a kind of screw 10 comprises screw head 20 and screw rod 30, screw head 20 and screw rod 30 are made into integration, screw head 20 offers the first groove 21, first groove 21 is set to the second cross recess, wherein this second cross recessed groove gets through formation second straight groove 22 in the radial direction at screw head 20, the first groove 21 is caused to be suitable for the screw-driver of two kinds of different models, the arc shaped surface 222 that the stress surface 221 that the port of the second straight groove 22 comprises groove sidewall is connected with stress surface 221, this arc shaped surface 222 be arranged on stress surface 221 top and to two lateral bends of the second straight groove 22.

The second groove 23 is offered in the first groove 21, second groove 23 is the first cross recess, second groove 23 is provided with the dustproof sheet 25 covered completely by the second groove, and be provided with elastic component 24 in the second groove 23, elastic component 24 is connected with dustproof sheet 25 and makes dustproof sheet 25 all the time to the trend moved in the first groove 21 direction, it is spring that elastic component 24 herein selects excellent, and elastic component 24 arranges at least 1.

See Fig. 4 and Fig. 5, the surface of dustproof sheet 25 is coated with wearing layer 26, and wearing layer 26 adopts the overlay paper impregnated melamine resin of aluminium sesquioxide to make.

Whole screw 10, for improving corrosion resistance, is coated with anticorrosion enamelled coating on the surface of screw 10.

When needs second groove 23 drives screw 10 to rotate, screw-driver withstands dustproof sheet 25 and acts on downwards, until screw-driver is deep in the second groove 23 complete interoperation, when after installing under the effect of elastic component 24 dustproof sheet 25 automatically reset and seal the second groove 23 and play dustproof effect.

Embodiment two

Be with the difference of embodiment one, the second groove 23 is arranged to the first straight groove.

In this article, " first ", " second " etc. only for differentiation each other, but not represent they significance level and order etc.

The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a screw, comprise the screw head and screw rod that are made into integration, described screw head offers the first groove, the second groove is offered in the first groove, it is characterized in that, described second groove is provided with the dustproof sheet for covering this second groove, and in the second groove, be provided with the elastic component making dustproof sheet to the first groove direction movement tendency.

2. a kind of screw according to claim 1, is characterized in that, the surface of described dustproof sheet is coated with wearing layer.

3. a kind of screw according to claim 1 and 2, is characterized in that, described second groove is the first straight groove or the first cross recess.

4. a kind of screw according to claim 1 and 2, is characterized in that, described elastic component is at least provided with 1.

5. a kind of screw according to claim 1, is characterized in that, described first groove is the second cross recess, and wherein the second cross recessed groove gets through formation second straight groove in the radial direction at screw head.

6. a kind of screw according to claim 4, is characterized in that, two ports of described second straight groove comprise the arc shaped surface that the stress surface perpendicular to screw head is connected with stress surface.

7. a kind of screw according to claim 1, is characterized in that, the surface of described screw is coated with anticorrosion enamelled coating.