CN215950076U

CN215950076U - Embedded positioning anti-theft screw

Info

Publication number: CN215950076U
Application number: CN202122301248.XU
Authority: CN
Inventors: 严科
Original assignee: Changzhou Jiuhe Fastener Manufacturing Co ltd
Current assignee: Changzhou Jiuhe Fastener Manufacturing Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-04
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses an embedded positioning anti-theft screw which comprises a screw rod and a screw cap arranged at the top end of the screw rod, wherein an embedded positioning groove is formed in the center of the top end of the screw cap, the cross section of the positioning groove is of a hexagonal quincunx structure, a circular boss is formed in the center of the bottom of the positioning groove, and the height of the circular boss is one fifth of the depth of the positioning groove. Through the mode, the embedded positioning anti-theft screw provided by the utility model adopts the positioning groove with the hexagonal plum-blossom-shaped structure, so that the conventional hexagonal fixing or socket spanner cannot be used, and meanwhile, the circular boss exists at the center position of the bottom of the positioning groove, so that a common inner hexagonal spanner cannot be matched with the positioning groove to be twisted. Therefore, if a standard inner hexagonal wrench is used for the screw, the screw cannot be screwed and unscrewed, and a special inner hexagonal wrench needs to be matched, so that a good anti-theft effect is achieved.

Description

Embedded positioning anti-theft screw

Technical Field

The utility model relates to the technical field of screws, in particular to an embedded positioning 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 in many positions needing to be fastened; the general screw is composed of a screw rod and a screw cap, wherein the screw rod is provided with threads, the screw cap is generally in a regular hexagonal shape, so that people can conveniently use a spanner or other tools to screw or loosen the screw, and due to the structure of the screw cap, any person can loosen the screwed screw by using the tool, so that the general screw does not have the anti-theft performance; in certain critical locations, it is necessary to ensure that the screws are not opened by human tools, and some anti-theft screws have been designed.

For example, in the existing anti-theft screw for fixing the automobile license plate, an aluminum protection shell is arranged outside the screw to protect the screw from being easily unscrewed by people, so that the purpose of preventing the license plate from being stolen by other people is achieved, but firstly, a set of aluminum protection shell needs to be manufactured, and the cost needs to be 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, if use standard allen key take off the screw very easily, loses the theftproof function.

Disclosure of Invention

The utility model mainly solves the technical problem of providing an embedded positioning anti-theft screw, which cannot be screwed and unscrewed if a standard inner hexagonal wrench is used, and needs to be matched with a specially-made inner hexagonal wrench, so that a good anti-theft effect is achieved.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides an embedded location antitheft screw, includes the screw rod and sets up the nut on the screw rod top, the central point on nut top puts and is provided with embedded positioning groove, positioning groove's cross section is hexagonal plum blossom shape structure, the central point of positioning groove bottom puts and is provided with circular boss, circular boss highly be one fifth of positioning groove's the degree of depth.

In a preferred embodiment of the present invention, the bottom of the positioning groove is a tapered structure.

In a preferred embodiment of the present invention, the upper end surface of the nut is of an arc flat-top structure, and the lower end surface of the nut is of a circular plane structure.

In a preferred embodiment of the present invention, the screw is a cylinder structure, and the surface of the screw is a smooth wall structure.

In a preferred embodiment of the utility model, the bottom of the screw rod adopts a frustum structure.

In a preferred embodiment of the utility model, the screw and the nut are formed by integral cold heading.

The utility model has the beneficial effects that: the embedded positioning anti-theft screw provided by the utility model adopts the positioning groove with the hexagonal plum-blossom-shaped structure, so that the conventional hexagonal fixing or socket wrench cannot be used, and meanwhile, the circular boss exists at the center of the bottom of the positioning groove, so that a common inner hexagonal wrench cannot be matched with the positioning groove for twisting. Therefore, if a standard inner hexagonal wrench is used for the screw, the screw cannot be screwed and unscrewed, and a special inner hexagonal wrench needs to be matched, so that a good anti-theft effect is achieved.

Drawings

FIG. 1 is a side sectional view of a first embodiment of an embedded positioning anti-theft screw of the present invention;

FIG. 2 is a top view of FIG. 1;

the parts in the drawings are numbered as follows: 1. screw rod, 2, nut, 3, positioning groove, 4, circular boss.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

Referring to fig. 1-2, the present embodiment includes:

the utility model provides an embedded location antitheft screw, includes screw rod 1 and sets up nut 2 on 1 top of screw rod, the central point on 2 tops of nut puts and is provided with embedded positioning groove 3, positioning groove 3's cross section is hexagonal plum blossom shape structure, the central point of 3 bottoms of positioning groove puts and is provided with circular boss 4, circular boss 4 highly be the fifth of the degree of depth of positioning groove 3.

In the above, the bottom of the positioning groove 3 is of a conical structure, the cross section of the positioning groove is of a hexagonal quincunx structure, meanwhile, the circular boss 4 is arranged at the center of the bottom of the positioning groove 3, a specially-made quincunx inner hexagonal wrench needs to be used, a cylindrical hole is formed in the middle of the wrench, the wrench can be matched with the circular boss 4 of the anti-theft screw for use, screwing and unscrewing are achieved, the use is convenient, and the safety is improved.

The upper end face of the nut 2 is of an arc flat-top structure, and the lower end face of the nut is of a circular plane structure.

The screw rod 1 is of a cylindrical structure, and the surface of the screw rod is of a smooth wall surface structure. The bottom of the screw rod 1 is of a frustum structure, and the screw rod is convenient to install and use.

In this embodiment, screw rod 1 and nut 2 adopt integrative cold-heading fashioned structure, and its material adopts 40CrMoa iron, sound construction, and intensity is high, non-deformable.

The embedded positioning anti-theft screw provided by the utility model has the distinguishing characteristics as follows:

1. an embedded positioning groove is arranged at the central position of the top end of the nut, the cross section of the positioning groove is of a hexagonal quincunx structure, conventional hexagonal fixing or sleeve wrenching cannot be used, and the nut has anti-theft performance;

2. the center position of the bottom of the positioning groove is provided with a circular boss, the height of the circular boss is one fifth of the depth of the positioning groove, and a common internal hexagonal wrench cannot be matched and twisted with the positioning groove due to the circular boss at the center position of the bottom of the positioning groove, so that the anti-theft performance is further improved;

3. the screw rod and the nut are of an integrated cold heading forming structure, finished products are processed by an integrated cold heading nut forming device at one time, the vertical accuracy of the screw can be guaranteed when the screw is embedded into a die or a workpiece, the yield is improved, the loss is reduced, and the efficiency of an embedded manufacturing process is improved.

In summary, the embedded positioning anti-theft screw provided by the utility model adopts the positioning groove with the hexagonal plum-blossom-shaped structure, so that the conventional hexagonal fixing or socket wrench cannot be used, and meanwhile, the circular boss exists at the center of the bottom of the positioning groove, so that the common internal hexagonal wrench cannot be matched with the positioning groove to rotate. Therefore, if a standard inner hexagonal wrench is used for the screw, the screw cannot be screwed and unscrewed, and a special inner hexagonal wrench needs to be matched, so that a good anti-theft effect is achieved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides an embedded location antitheft screw, its characterized in that includes the screw rod and sets up the nut on the screw rod top, the central point on nut top puts and is provided with embedded positioning groove, positioning groove's cross section is hexagonal plum blossom shape structure, the central point of positioning groove bottom puts and is provided with circular boss, circular boss highly be one fifth of positioning groove's the degree of depth.

2. The embedded positioning anti-theft screw according to claim 1, wherein the bottom of the positioning groove is of a tapered structure.

3. The embedded positioning anti-theft screw according to claim 1, wherein the upper end surface of the nut is of an arc flat-top structure, and the lower end surface of the nut is of a circular plane structure.

4. The embedded positioning anti-theft screw according to claim 1, wherein the screw rod is of a cylindrical structure, and the surface of the screw rod is of a smooth wall surface structure.

5. The embedded positioning anti-theft screw according to claim 4, wherein the bottom of the screw rod adopts a frustum structure.

6. The embedded positioning anti-theft screw according to claim 1, wherein the screw rod and the nut are formed by integral cold heading.