CN210623336U

CN210623336U - Anti-theft screw

Info

Publication number: CN210623336U
Application number: CN201921039892.0U
Authority: CN
Inventors: 黄碧贵; 张彬; 张金军
Original assignee: Qichun Chaoxin Hardware Machinery Co Ltd
Current assignee: Hubei Chaoxin Machinery Technology Co., Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-05-26
Anticipated expiration: 2029-07-05

Abstract

The utility model discloses an anti-theft screw, including the nail body and circular nail cap, be equipped with four juts that have the same shape on the nail cap, the jut is in circular nail cap up end is along circumference evenly distributed, just four juts with the center pin of the nail body is 90 rotational symmetry for the symmetry axis, form the cross recess between the jut, the jut include the top surface, with the bottom surface vertically stress surface of recess and locate scarf between stress surface and the top surface. The utility model has the advantages that: through adopting special structure that can only screw in and can't screw out, use the flat screwdriver with the screw back of precessing, can't reverse loosen the screw back of screwing out, play the theftproof effect, this screw outward appearance is pleasing to the eye simultaneously, simple structure, low in manufacturing cost has fine economic benefits.

Description

Anti-theft screw

Technical Field

The utility model belongs to hardware connecting piece makes the field, especially relates to an anti-theft screw.

Background

The screw is one of the most common fasteners in work and life of people, and is popular with people due to simple structure and low manufacturing cost, and people prefer the screw as the fastener at a plurality of positions needing fastening; the common screw consists of a screw body and a screw cap, and any person can loosen the screwed screw by using a tool, so the common screw has no anti-theft performance; in some important positions, the screws are required to be ensured not to be opened by a tool, and people design some anti-theft screws, for example, the anti-theft screws used for fixing automobile license plates in China currently adopt a protective shell arranged outside the screws to protect the screws from being easily unscrewed by people, so that the purpose of preventing license plates from being stolen by other people is achieved, but firstly, a protective shell needs to be manufactured for the screws, so that the cost is increased; secondly, this kind of aluminium system protective housing is gone through the time on the car, can drop, causes the screw to be exposed outside, loses the theftproof function.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned technical problem among the correlation technique, the utility model provides an anti-theft screw to overcome the above-mentioned not enough that prior art exists.

In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:

the utility model provides an anti-theft screw, includes the nail body and circular nail cap, be equipped with four juts that have the same shape on the nail cap, the jut is in circular nail cap up end is along circumference evenly distributed, just four juts with the center pin of the nail body is 90 rotational symmetry for the symmetry axis, form cross recess between the jut, the jut include the top surface, with the bottom surface vertically stress surface of recess and locate scarf between stress surface and the top surface.

Furthermore, the bottom surface of the groove is perpendicular to the central axis of the nail body.

Further, the chamfer surface is a straight surface.

Further, the top surface is a spherical surface.

Furthermore, the middle part of the cross-shaped groove is of a circular structure.

The utility model has the advantages that: through adopting special structure that can only screw in and can't screw out, use the flat screwdriver with the screw back of precessing, can't reverse loosen the screw back of screwing out, play the theftproof effect, this screw outward appearance is pleasing to the eye simultaneously, simple structure, low in manufacturing cost has fine economic benefits.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of an anti-theft screw according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a nut of an anti-theft screw according to an embodiment of the present invention;

in the figure: 1. a nail cap; 2. a nail body; 3. a top surface; 4. a chamfer plane; 5. a bottom surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

As shown in fig. 1-2, according to the utility model discloses an anti-theft screw, including the nail body 2 and circular nail cap 1, be equipped with four juts that have the same shape on the nail cap 1, the jut is along circumference evenly distributed at circular nail cap 1 up end, and four juts use the center pin of the nail body 2 to be 90 rotational symmetry as the symmetry axis, form the cross recess between the jut, the jut includes top surface 3, with the bottom surface 5 vertically stress surface of recess and locate the scarf 4 between stress surface and top surface 3.

In one embodiment of the utility model, the bottom surface 5 of the groove is perpendicular to the central axis of the nail body 2.

The utility model relates to an in the embodiment, scarf 4 is straight face, and is 45 to 60 with the contained angle between the bottom surface 5, conveniently processes manufacturing.

The utility model relates to an in the embodiment, top surface 3 is spherical, and the outward appearance is succinct pleasing to the eye.

The utility model relates to an in the embodiment, the middle part of cross recess is circular structure, and manufacturing is simple, low in production cost.

The utility model discloses an adopt special structure that can only the precession can't the screw out, use the flat screwdriver to support the stress surface with the screw precession back, can't reverse loosen the screw out, play the theftproof effect, this screw outward appearance is pleasing to the eye simultaneously, simple structure, low in manufacturing cost has fine economic benefits.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an anti-theft screw, includes the nail body (2) and circular nail cap (1), its characterized in that, be equipped with four juts that have the same shape on nail cap (1), the jut is in circumference evenly distributed is followed to circular nail cap (1) up end, just four juts with the center pin of the nail body (2) is 90 rotational symmetry for the symmetry axis, form cross recess between the jut, the jut include top surface (3), with bottom surface (5) vertically stress surface of recess and locate scarf (4) between stress surface and top surface (3).

2. An anti-theft screw according to claim 1, characterised in that the bottom surface (5) of said groove is perpendicular to the central axis of said body (2).

3. An anti-theft screw according to claim 2, characterised in that said chamfer (4) is a straight face.

4. An anti-theft screw according to claim 3, characterised in that said top surface (3) is a spherical surface.

5. The anti-theft screw according to claim 4, wherein the middle part of said cross-shaped groove has a circular structure.