CN202301391U - Anti-theft bolt and wrench - Google Patents

Abstract

The utility model discloses an anti-theft screw and a wrench. The anti-theft screw includes a screw head and a screw rod. The screw head is provided with a guide groove, and at least two protrusions are arranged in the guide groove. Through the above technical scheme, the utility model provides an anti-theft screw and a wrench with enhanced anti-theft performance.

Description

Anti-theft screw and wrench

technical field

The utility model relates to a fastener and a tool for opening the fastener, in particular to an anti-theft screw and a wrench.

Background technique

At present, the common screws are provided with slots or cross recesses on the head, or the head is not provided with a groove, but the head is set in a polygonal shape, such as a regular hexagon. For screws with a slotted or cross-recessed screw on the head, it can be fastened or screwed up with a common flat-blade screwdriver or Phillips screwdriver; Polygonal screws, which can be tightened or unscrewed with common tools such as pliers.

For some specific occasions, there are relatively high requirements for the safety performance of screws, and the existing screws cannot meet the requirements for safety performance, such as base station equipment in the field of mobile communications, which are easily disassembled and damaged by humans. The anti-theft screws used in various base station equipment have poor anti-theft performance. Therefore, the existing screws need to be further improved to enhance their anti-theft performance.

Utility model content

The utility model provides an anti-theft screw with enhanced anti-theft performance and a wrench thereof.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

An anti-theft screw includes a screw head and a screw shaft, the screw head is provided with a guide groove, and at least two protrusions are arranged in the guide groove.

The screw head, screw shank and all the protrusions are integrated; or, the screw head, screw shank and part of the protrusions are integrated.

A first protrusion and a second protrusion are disposed in the guide groove, the first protrusion is disposed at the center of the guide groove, and the second protrusion is disposed around the first protrusion.

The end surface of the first protrusion is on the same level as the end surface of the screw head, and the end surface of the second protrusion is lower than the end surface of the screw head.

There is one first protrusion, and there is an even number of second protrusions.

The guide groove is annular, the first protrusion is cylindrical, and the second protrusion is semi-cylindrical.

The second protrusion is arranged on the side wall of the guide groove, leaving a space between the second protrusion and the first protrusion.

A positioning groove for positioning the wrench is arranged in the guide groove.

A wrench comprises a base and a handle connected with the base, and at least two grooves are arranged at one end of the base to match the position and shape of the protrusion in the guide groove of the screw head.

The other end of the base is provided with a sleeve hole, and the handle includes two ends and a rotating rod arranged between the two ends, and the rotating rod is horizontally sleeved in the sleeve hole.

The rotating rod slides laterally in the sleeve hole.

The utility model provides an anti-theft screw with enhanced anti-theft performance and a wrench thereof. The anti-theft screw includes a screw head and a screw shaft. The screw head is provided with a guide groove, and at least two protrusions are arranged in the guide groove. . Since the protrusions are fixed at different positions in the groove, when a wrench is used to fasten or open the screw, the protrusions can be used as the focus points of the wrench, which is convenient for the wrench to fasten or open the screw without Special treatment is required for the wrench or the groove; at the same time, compared with the technical solution of the prior art that only sets the groove on the head of the screw, the utility model can use these protrusions to resist some common dismounting tools. Destruction, such as the more common flat-blade screwdriver or Phillips screwdriver, has achieved the effect of further enhancing the anti-theft performance.

Description of drawings

Fig. 1 is the schematic diagram of a kind of anti-theft screw of the utility model embodiment;

Fig. 2 is a top view of a screw head structure of an anti-theft screw according to an embodiment of the present invention;

Fig. 3 is the schematic diagram of a kind of wrench of the utility model embodiment;

Fig. 4 is a bottom view of a base structure of a wrench according to an embodiment of the present invention.

Detailed ways

The utility model will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

An anti-theft screw includes a screw head, a screw shaft, and may also include a spring washer and a flat washer. The screw head is provided with a guide groove, and at least two protrusions are arranged in the guide groove.

Preferably, the screw head, the screw shank and all the protrusions are integrated; or, the screw head, the screw shank and part of the protrusions are integrated, so that the production of the screw can be facilitated, and the overall structure of the screw can be beautified at the same time; In order to further enhance the anti-theft performance of the screw, preferably, different protrusions can be set to different shapes, and each protrusion is arranged on a different position of the guide groove, and the guide groove can have various shapes, such as ring, polygon, etc., the protrusions It can have various shapes, such as cylindrical, spherical, conical, polygonal, etc., the screw head can have various shapes, such as cylindrical, spherical, conical, polygonal, etc., and the screw shaft can also have various shapes. The rod is provided with threads.

This embodiment also includes a wrench matched with the above-mentioned screw, the wrench includes a base and a handle connected to the base, and one end of the base is provided with a At least two matched grooves, that is, one groove corresponds to one protrusion in the guide groove of the screw head, and their shapes and positions are matched.

Figure 1 is a schematic diagram of an anti-theft screw according to an embodiment of the present invention, please refer to Figure 1:

An anti-theft screw, comprising a screw head 11, a screw shank 12, a spring washer 13 and a flat washer 14, the screw head is provided with a guide groove 15, a first protrusion 16 is arranged in the guide groove 15, and the first protrusion 16 is arranged At the central position of the guide groove, four second protrusions 17 are also arranged around the first protrusion 16 in the guide groove 15, and the four second protrusions 17 are evenly distributed on the side walls of the guide groove 15, and There is a gap between the first protrusion 16, the end face of the first protrusion 16 is on the same horizontal plane as the end face of the screw head 11, and the end face of the second protrusion 17 is lower than the end face of the screw head 11. The side wall of 15 is also provided with longitudinal positioning groove 18, and in the present embodiment, screw head 11 is cylindrical, and screw shank 12 is cylindrical, and guide groove 15 is annular, and first protrusion 16 is cylindrical, 4 Each second protrusion 17 is a semi-cylindrical body.

Fig. 2 is a top view of a screw head structure of an anti-theft screw according to an embodiment of the present invention.

The shape and number of the second protrusions 17 include various methods, the preferred even number of the second protrusions 17 is not limited to 4 in this embodiment, and the arrangement of the second protrusions 17 is not limited to being arranged at On the side wall of guide groove 15, also can be arranged in the space between the side wall of guide groove 15 and the first protrusion 16, the second protrusion 17 can leave space between the first protrusion 16, or not The first protrusion 16 is not limited to be disposed at the center of the guide groove 15 , but can also be disposed at other positions of the guide groove 15 . The positioning groove 18 can be arranged on the side wall of the guide groove 15 in many ways, and is not limited to the longitudinal arrangement.

In this embodiment, by providing at least two protrusions in the guide groove, only a wrench matching the structure can be used to fasten or open the screw, so the safety performance of the screw can be further enhanced.

Figure 3 is a schematic diagram of a wrench according to an embodiment of the present invention, please refer to Figure 3:

A wrench, comprising a base 21 and a handle connected to the base 21, one end of the base 21 is provided with a first groove 211, the first groove 211 is matched with the first protrusion 16 of the utility model embodiment, Including the matching of shape and relative position, the other end of the base 21 is provided with a sleeve hole 212, the handle includes two ends 221 and a rotating rod 222 arranged between the two ends 221, the rotating rod 222 is horizontally sleeved on the sleeve In the hole 212, the end of the base 21 provided with the first groove 211 is also provided with a second groove 213 equal in number to the second protrusion 17 of this embodiment, and the second groove 213 is connected to the second protrusion. 17 matching, including the matching of shape and relative position, one end of the base 21 provided with the first groove 211 is also provided with a positioning block 214 matching with the positioning groove 18 provided longitudinally on the side wall of the screw guide groove 15 .

Fig. 4 is a bottom view of a base structure of a wrench according to an embodiment of the present invention.

Preferably, the rotating rod 222 can slide laterally in the sleeve hole 212 .

The above content is a further detailed description of the utility model in conjunction with specific implementation methods, and it cannot be determined that the specific implementation of the utility model is only limited to these descriptions. For a person of ordinary skill in the technical field to which the utility model belongs, without departing from the concept of the utility model, some simple deduction or substitutions can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (11)

1. an anti-theft screw comprises screw head and screw rod portion, it is characterized in that said screw head is provided with guiding groove, is provided with at least two convexities in the said guiding groove.

2. screw according to claim 1 is characterized in that, said screw head, screw rod portion are structure as a whole with whole convexities; Perhaps, said screw head, screw rod portion and part convexity are structure as a whole.

3. screw according to claim 1 or claim 2 is characterized in that, first protruding and second convexity is set in the said guiding groove, and said first convexity is arranged on the central position of said guiding groove, and said second is protruding around the said first protruding setting.

4. like the said screw of claim 3, it is characterized in that the end face of said first convexity and the end face of said screw head are on same horizontal plane, the said second protruding end face is lower than the end face of said screw head.

5. like the said screw of claim 4, it is characterized in that said first convexity is one, said second convexity is an even number.

6. like the said screw of claim 5, it is characterized in that said guiding groove is an annular, said first convexity is cylindrical, and said second convexity is half-cylindrical.

7. like the said screw of claim 6, it is characterized in that said second convexity is arranged on the sidewall of said guiding groove, and leave the space between said first convexity.

8. screw according to claim 1 or claim 2 is characterized in that, is provided with the locating slot that is used for dowelled spanner in the said guiding groove.

9. a spanner comprises pedestal and the handle that links to each other with said pedestal, it is characterized in that, an end of said pedestal be provided with the screw head guiding groove in position and at least two grooves that shape is complementary of convexity.

10. like the said spanner of claim 9, it is characterized in that the other end of said pedestal is provided with trepanning, said handle comprises two end part and is arranged on the swing arm between the said two end part that said swing arm laterally is enclosed within the said trepanning.

11., it is characterized in that said swing arm laterally slides like the said spanner of claim 10 in said trepanning.

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