Bolt standard part with anti-theft protection performance

By designing anti-theft components on the bolts, utilizing the inertia of the spring and top plate to push the screw, combined with special tools and blocking the disassembly holes, the problem of bolts being easily stolen is solved, realizing the anti-theft function of the bolts and preventing theft of items.

CN224229061UActive Publication Date: 2026-05-12WENZHOU SHENNAN FASTENER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU SHENNAN FASTENER CO LTD
Filing Date
2025-06-28
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Bolts do not have anti-theft function and can be easily loosened by criminals, leading to the theft of items fixed in the clamps.

Method used

An anti-theft component was designed, including a screw sleeve, a plum blossom groove, a spring, and a top plate. Through the cooperation of a special tool and the plum blossom groove, the inertia of the spring drives the top plate to push the screw, making the connection between the screw and the screw sleeve tighter and preventing loosening. It also prevents unauthorized disassembly by blocking the disassembly hole.

Benefits of technology

It effectively prevents bolts from being loosened by criminals, avoids theft of items, and improves the anti-theft performance of bolts.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224229061U_ABST
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Abstract

The utility model relates to the technical field of bolts, in particular to a bolt standard part with anti-theft protection performance, which comprises a bolt bar, a bolt head is arranged at the top of the bolt bar, a dismounting hole is arranged in an inner cavity of the bolt head, an anti-theft component is arranged in an inner cavity of the dismounting hole, and the anti-theft component comprises a thread sleeve. And the screw sleeve is arranged in an inner cavity of the dismounting hole. When the bolt needs to be anti-theft, firstly, the screw rod is in threaded connection in the thread sleeve through the plum blossom groove by a special tool, when the bottom of the screw rod is lower than the horizontal plane of the bottom of the thread sleeve, the screw rod can press the top plate downwards, the spring is extruded through the top plate, and when the plum blossom groove stops rotating, the top plate is driven by inertia of the spring to eject upwards; the threaded rod is pushed upwards through the top plate, so that the threaded connection position of the threaded rod and the threaded sleeve is tighter, the threaded rod is prevented from loosening in the threaded sleeve, after the threaded rod is installed, the dismounting hole can be blocked, and lawbreakers are prevented from screwing the bolt head.
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Description

Technical Field

[0001] This utility model relates to the field of bolt technology, specifically to a standard bolt component with anti-theft protection performance. Background Technology

[0002] A bolt is a mechanical part, a cylindrical threaded fastener used with a nut. It consists of a head and a shank (a cylinder with external threads), and is used to fasten two parts with through holes. The safety of bolts and nuts used in outdoor infrastructure is crucial, such as those used in railway and highway bridges, power transmission towers, and microwave communication towers.

[0003] When securing items to clips, bolts are needed to work with the clips to secure the items. However, bolts do not have anti-theft features, making them easy for criminals to loosen and steal the items from the clips. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a standard bolt component with anti-theft protection, which has the advantages of preventing theft of bolts and solves the problem that bolts do not have anti-theft functions.

[0005] This utility model discloses a standard bolt component with anti-theft protection, comprising a bolt shank, a bolt head at the top of the bolt shank, a disassembly hole in the inner cavity of the bolt head, and an anti-theft component within the inner cavity of the disassembly hole. The anti-theft component includes a threaded sleeve disposed within the inner cavity of the disassembly hole. A bolt is threadedly connected to the inner cavity of the threaded sleeve, and a perforated groove is formed at the top of the bolt. A spring is located at the bottom of the inner cavity of the disassembly hole, and a top plate is fixedly connected to one end of the spring, with the top of the top plate contacting the bolt. When anti-theft protection is required for the bolt, a special tool first threads the bolt into the threaded sleeve through the perforated groove. When the bottom of the bolt is lower than the horizontal plane of the bottom of the threaded sleeve, the bolt presses down on the top plate, which in turn presses against the spring. The compression mechanism, when the rotation of the plum blossom groove stops, uses the inertia of the spring to push the top plate upwards, which in turn pushes the screw upwards. This makes the threaded connection between the screw and the sleeve tighter, preventing the screw from loosening inside the sleeve. After the screw is installed, the disassembly hole can be blocked to prevent criminals from tightening the bolt head. When workers need to tighten the bolt head, they first use a special tool to tighten the plum blossom groove, which drives the screw to rotate. When the screw is removed from the sleeve and disassembly hole, workers insert a special six-bar wrench into the disassembly hole to loosen the bolt head. This method avoids situations where the bolt lacks anti-theft functionality, making it easy for criminals to loosen the bolt and steal items from the clamp.

[0006] The present invention relates to a standard bolt part with anti-theft protection, wherein the number of disassembly holes is six, and the six disassembly holes are equally spaced within the inner cavity of the bolt head.

[0007] This utility model discloses a standard bolt component with anti-theft protection performance. The top and bottom of the spring are fixedly connected to the disassembly hole and the top plate by welding. The top plate is located below the screw sleeve. The connection between the spring, the disassembly hole and the top plate by welding can increase the stability of the spring and prevent the two ends of the spring from loosening during use, thus affecting the use of the spring.

[0008] This utility model discloses a standard bolt component with anti-theft protection performance, wherein the surface of the threaded sleeve is fixedly connected to the disassembly hole by welding, and the diameter of the threaded sleeve is consistent with the diameter of the disassembly hole.

[0009] This utility model discloses a standard bolt part with anti-theft protection performance, wherein the plum blossom groove is opened at the center of the top of the screw, the top of the screw is flush with the top of the disassembly hole, and the bottom of the screw is lower than the horizontal line of the bottom of the screw sleeve. By passing the horizontal plane of the bottom of the screw and the horizontal plane of the bottom of the screw sleeve, it is easier for the top plate to push the screw upward with an inertia, thus preventing the screw from loosening.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. When anti-theft measures are needed for bolts, this utility model first uses a special tool to thread the bolt into the sleeve through a perforated groove. When the bottom of the bolt is lower than the bottom of the sleeve, the bolt presses down on the top plate, which in turn compresses the spring. When the perforated groove stops rotating, the spring's inertia pushes the top plate upward, which in turn pushes the bolt upward. This makes the threaded connection between the bolt and the sleeve tighter, preventing the bolt from loosening inside the sleeve. After the bolt is installed, the disassembly hole can be blocked to prevent thieves from loosening the bolt head. When workers need to loosen the bolt head, they first use the special tool to rotate the perforated groove, which drives the bolt to rotate. When the bolt is removed from the sleeve and the disassembly hole, workers insert a special six-bar wrench into the disassembly hole to loosen the bolt head. This method avoids situations where bolts lack anti-theft functionality, making them easy for thieves to loosen and steal items from the clamps.

[0012] 2. The spring, disassembly hole, and top plate of this utility model are connected by welding, which can increase the stability of the spring and prevent the two ends of the spring from becoming loose during use, thus affecting the use of the spring;

[0013] By using the horizontal plane at the bottom of the screw and the horizontal plane at the bottom of the screw sleeve, it is easier for the top plate to push the screw upward with inertia, which can prevent the screw from loosening. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the bolt head structure of this utility model;

[0017] Figure 3 This is a partial cross-sectional view of the bolt head of this utility model;

[0018] Figure 4 This is a schematic diagram of the anti-theft component structure of this utility model;

[0019] Figure 5 This is a partial cross-sectional view of the threaded sleeve of this utility model.

[0020] In the diagram: 1. Bolt rod; 2. Bolt head; 3. Anti-theft component; 301. Screw sleeve; 302. Top plate; 303. Spring; 304. Screw; 305. Plum blossom groove; 4. Disassembly hole. Detailed Implementation

[0021] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0022] Please see Figure 1-5This utility model discloses a standard bolt component with anti-theft protection, comprising a bolt shank 1, a bolt head 2 at the top of the bolt shank 1, a disassembly hole 4 inside the bolt head 2, and an anti-theft component 3 inside the disassembly hole 4. The anti-theft component 3 includes a threaded sleeve 301, which is disposed inside the disassembly hole 4. A screw 304 is threadedly connected to the inner cavity of the threaded sleeve 301. A perforated groove 305 is provided at the top of the screw 304. A spring 303 is provided at the bottom of the inner cavity of the disassembly hole 4. One end of the spring 303 is fixedly connected to a top plate 302, and the top of the top plate 302 contacts the screw 304. When anti-theft protection of the bolt is required, a special tool is first used to thread the screw 304 into the threaded sleeve 301 through the perforated groove 305. When the bottom of the screw 304 is lower than the horizontal plane of the bottom of the threaded sleeve 301, the screw 304 will press down on the top plate 302, thereby acting on the spring 304 through the top plate 302. 3. When the plum blossom groove 305 stops rotating, the inertia of the spring 303 drives the top plate 302 upward, which in turn pushes the screw 304 upward. This makes the threaded connection between the screw 304 and the threaded sleeve 301 tighter, preventing the screw 304 from loosening inside the threaded sleeve 301. After the screw 304 is installed, the disassembly hole 4 can be blocked to prevent criminals from turning the bolt head 2. When the staff needs to turn the bolt head 2, they first turn the plum blossom groove 305 with a special tool. The plum blossom groove 305 drives the screw 304 to rotate. When the screw 304 is removed from the threaded sleeve 301 and the disassembly hole 4, the staff inserts a special six-bar wrench into the disassembly hole 4 to turn and disassemble the bolt head 2. The above method avoids the situation where the bolt does not have an anti-theft function, which would make it easy for criminals to unscrew the bolt and cause the items on the fixing clip to be stolen.

[0023] There are six disassembly holes 4, and the six disassembly holes 4 are equally spaced in the inner cavity of the bolt head 2.

[0024] The top and bottom of the spring 303 are fixedly connected to the disassembly hole 4 and the top plate 302 by welding. The top plate 302 is located below the screw sleeve 301. The connection between the spring 303 and the disassembly hole 4 and the top plate 302 by welding can increase the stability of the spring 303 and prevent the two ends of the spring 303 from becoming loose during use, thus affecting the use of the spring 303.

[0025] The surface of the threaded sleeve 301 is fixedly connected to the disassembly hole 4 by welding, and the diameter of the threaded sleeve 301 is the same as the diameter of the disassembly hole 4.

[0026] The plum blossom groove 305 is opened at the center of the top of the screw 304. The top of the screw 304 is flush with the top of the disassembly hole 4. The bottom of the screw 304 is lower than the horizontal line of the bottom of the screw sleeve 301. By passing the horizontal plane of the bottom of the screw 304 and the horizontal plane of the bottom of the screw sleeve 301, it is easier for the top plate 302 to push the screw 304 upward with an inertia. This can play a role in preventing the screw 304 from loosening.

[0027] When using this utility model: When anti-theft measures are needed for bolts, firstly, a special tool connects the screw 304 to the threaded sleeve 301 via the plumb line groove 305. When the bottom of the screw 304 is lower than the horizontal plane of the bottom of the threaded sleeve 301, the screw 304 will press down on the top plate 302, which in turn compresses the spring 303. When the plumb line groove 305 stops rotating, the inertia of the spring 303 causes the top plate 302 to push upward, which in turn pushes the screw 304 upward. This makes the threaded connection between the screw 304 and the threaded sleeve 301 tighter, preventing the screw 304 from getting stuck in the threaded sleeve 301. 1. If the bolt head 2 is loose, after the screw 304 is installed, the disassembly hole 4 can be blocked to prevent criminals from turning the bolt head 2. When the staff needs to turn the bolt head 2, they first use a special tool to turn the plum blossom groove 305. The plum blossom groove 305 drives the screw 304 to rotate. When the screw 304 is removed from the screw sleeve 301 and the disassembly hole 4, the staff inserts a special six-bar wrench into the disassembly hole 4 to turn and disassemble the bolt head 2. The above avoids the situation where the bolt does not have an anti-theft function, which would make it easy for criminals to unscrew the bolt and cause the items on the fixing clip to be stolen.

[0028] The above are merely embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A standard bolt component with anti-theft protection performance, comprising a bolt shank (1), characterized in that: The top of the bolt rod (1) is provided with a bolt head (2), and the inner cavity of the bolt head (2) is provided with a disassembly hole (4). The inner cavity of the disassembly hole (4) is provided with an anti-theft component (3). The anti-theft component (3) includes a threaded sleeve (301), and the threaded sleeve (301) is set in the inner cavity of the disassembly hole (4). The inner cavity of the threaded sleeve (301) is threadedly connected to a screw rod (304). The top of the screw rod (304) is provided with a plum blossom groove (305). The bottom of the inner cavity of the disassembly hole (4) is provided with a spring (303). One end of the spring (303) is fixedly connected to a top plate (302), and the top of the top plate (302) is in contact with the screw rod (304).

2. A standard bolt component with anti-theft protection performance according to claim 1, characterized in that: The number of disassembly holes (4) is six, and the six disassembly holes (4) are equally spaced in the inner cavity of the bolt head (2).

3. A standard bolt component with anti-theft protection performance according to claim 1, characterized in that: The top and bottom of the spring (303) are fixedly connected to the disassembly hole (4) and the top plate (302) by welding, and the top plate (302) is located below the threaded sleeve (301).

4. A standard bolt component with anti-theft protection performance according to claim 1, characterized in that: The surface of the threaded sleeve (301) is fixedly connected to the disassembly hole (4) by welding, and the diameter of the threaded sleeve (301) is the same as the diameter of the disassembly hole (4).

5. A standard bolt component with anti-theft protection performance according to claim 1, characterized in that: The plum blossom groove (305) is opened at the center of the top of the screw (304), the top of the screw (304) is flush with the top of the disassembly hole (4), and the bottom of the screw (304) is lower than the horizontal line of the bottom of the screw sleeve (301).