Anti-theft bolt
By designing anti-theft bolts, the structure of the limit rod, limit shaft and clamp, combined with special-shaped nuts, the problem of bolts being easily stolen is solved, and high-security fasteners are difficult to disassemble, enhancing the anti-theft effect of field infrastructure.
Patent Information
- Application Number
- CN202422356918.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-26
AI Technical Summary
Existing bolt and nut fasteners are prone to stolen in field infrastructure, resulting in safety hazards and unsatisfactory anti-theft effect.
An anti-theft bolt was designed, including a screw head, a screw and a nut. The screw is equipped with a limit hole and an anti-theft structure. Through the coordination of the limit rod, limit shaft and a card block, combined with a special-shaped nut, it is difficult to disassemble and requires special tools to disassemble it.
Improve the anti-theft performance of bolts, prevent illegal disassembly, and enhance the safety of field infrastructure.
Smart Images
Figure CN223075956U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bolts, in particular to an anti-theft bolt. Background Art
[0002] The existing commonly used bolt and nut fasteners are indispensable important parts for connecting mechanical components and fixing devices. Bolt and nut fasteners are very convenient to use, easy to install and disassemble. However, for bolt and nut fasteners in infrastructure in the wild, their safety is very important, such as bolt and nut fasteners used in infrastructure such as railway, highway bridges, transmission towers, and microwave communication towers.
[0003] Because they can be easily disassembled, they are often targets of theft or damage by lawbreakers, posing extremely unsafe hidden dangers or directly causing damage to these infrastructures; the existing bolt anti-theft effect is not ideal and cannot well meet the use requirements. Summary of the Utility Model
[0004] The main purpose of the utility model is to provide an anti-theft bolt to solve the above technical problems.
[0005] To achieve the above purpose, the utility model provides the following technical solution: an anti-theft bolt, including a bolt head, a bolt rod and a nut. A smooth rod section and a threaded section are formed on the bolt rod. A limiting hole is provided on the smooth rod section. An anti-theft structure is provided inside the smooth rod section. An installation hole is provided on the bolt head. The installation hole communicates with the smooth rod section. A limiting rod is detachably installed in the installation hole. An installation block is provided at the top of the limiting rod. A flower groove is provided on the installation block.
[0006] Based on the above solution and as a preferred solution of the above solution: the anti-theft structure includes a support plate installed at the bottom of the inner cavity of the smooth rod section and a sliding groove provided on the inner wall of the smooth rod section. A spring is provided on the support plate. A limiting shaft is provided at the end of the spring. The limiting shaft is slidably connected with the sliding groove. The end of the limiting shaft is adapted to the limiting hole.
[0007] Based on the above solution and as a preferred solution of the above solution: a pressing block is provided at the top of the limiting shaft. A groove is provided on the pressing block. Internal threads are provided in the groove. The bottom end of the limiting rod is threadedly connected with the groove.
[0008] Based on the above solution and as a preferred solution of the above solution: clamping blocks are detachably installed at both ends of the limiting shaft.
[0009] Based on the above solution and as a preferred solution of the above solution: the nut includes a disc head. A square block is provided at the bottom of the disc head. The nut is detachably installed and connected with the threaded section.
[0010] The beneficial effects of the present utility model are as follows: In the present utility model, by setting an anti-theft structure, when in use, the limiting rod is inserted into the mounting hole. The bottom of the limiting rod cooperates with the groove on the pressing block, and the pressing block is pressed downwards, driving the limiting shaft to move downwards in the sliding groove. When moving to the position of the limiting hole, the clamping block is adapted to the limiting hole and extends out from the limiting hole, and is fastened to the outside. Then, the fastening can be achieved through the nut with a special shape and the threaded section. When the nut needs to be disassembled, a special tool is required to disassemble the nut. When the anti-theft structure needs to be disassembled, the special tool is used to rotate the flower groove, driving the limiting rod to rotate, and then driving the limiting shaft to rotate. When the limiting shaft rotates, a greater force is applied to break the clamping block, and then the disassembly can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is the schematic diagram of the overall structure of the present utility model;
[0012] Figure 2 is the schematic diagram of the anti-theft structure in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0013] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments. However, the specific embodiments and examples described below are for illustrative purposes only and are not limitations to the present utility model.
[0014] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for facilitating the description of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model.
[0015] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0016] In the present utility model, unless otherwise clearly stipulated and defined, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0017] In the present utility model, unless otherwise clearly stipulated and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on the top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under the bottom of" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.
[0018] Referring to the Figures 1 to 2 , an anti-theft bolt in this embodiment includes a bolt head 1, a screw rod and a nut. A smooth rod section 2 and a threaded section 3 are formed on the screw rod. A limiting hole 20 is provided on the smooth rod section 2, and an anti-theft structure is provided inside the smooth rod section 2. An installation hole 10 is provided on the bolt head 1. The installation hole 10 communicates with the smooth rod section 2, and a limiting rod 5 is detachably installed in the installation hole 10. An installation block 50 is provided at the top of the limiting rod 5, and a flower groove 51 is provided on the installation block 50.
[0019] Furthermore, the anti-theft structure includes a support plate 6 installed at the bottom of the inner cavity of the smooth rod section 2 and a sliding groove 11 provided on the inner wall of the smooth rod section 2. A spring 60 is provided on the support plate 6. A limiting shaft 61 is provided at the end of the spring 60. The limiting shaft 61 is slidably connected with the sliding groove 11, and the end of the limiting shaft 61 is adapted to the limiting hole 20.
[0020] Furthermore, a pressing block 62 is provided at the top of the limiting shaft 61. A groove is provided on the pressing block 62, and internal threads are provided in the groove. The bottom end of the limiting rod 5 is threadedly connected with the groove.
[0021] Furthermore, clamping blocks 610 are detachably installed at both ends of the limiting shaft 61.
[0022] Furthermore, the nut includes a disc head 4. A square block 40 is provided at the bottom of the disc head 4. The nut is detachably installed and connected with the threaded section 3.
[0023] Working principle: In the present utility model, by setting an anti-theft structure, when in use, the limiting rod 5 is inserted into the mounting hole 10. The bottom of the limiting rod 5 cooperates with the groove on the pressing block 62, and the pressing block 62 is pressed down, driving the limiting shaft 61 to move downward in the sliding groove 11. When it moves to the position of the limiting hole 20, the clamping block 610 is adapted to the limiting hole 20 and extends out from the limiting hole 20 to be firmly fixed to the outside; then fastening can be achieved through the nut with a special shape and the threaded section 3; when the nut needs to be disassembled, a special tool is required to disassemble the nut; when the anti-theft structure needs to be disassembled, the special tool is used to rotate the flower groove 51 to drive the limiting rod 5 to rotate, and then drive the limiting shaft 61 to rotate. When the limiting shaft 61 rotates, applying a greater force can break the clamping block 610, and thus the disassembly can be realized.
[0024] The above embodiments are only the preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model shall be covered within the protection scope of the present utility model.
Claims
1. An anti-theft bolt, characterized in that: It includes a screw head, a screw rod and a nut. A smooth rod section and a threaded section are formed on the screw rod. A limit hole is provided on the smooth rod section, and an anti-theft structure is provided inside the smooth rod section. An installation hole is provided on the screw head, and the installation hole communicates with the smooth rod section. A limit rod is detachably installed in the installation hole. An installation block is provided at the top of the limit rod, and a flower groove is provided on the installation block.
2. The anti-theft bolt according to claim 1, characterized in that: The anti-theft structure includes a support plate installed at the bottom of the inner cavity of the smooth rod section and a sliding groove provided on the inner wall of the smooth rod section. A spring is provided on the support plate, a limit shaft is provided at the end of the spring, the limit shaft is slidably connected with the sliding groove, and the end of the limit shaft is adapted to the limit hole.
3. The anti-theft bolt according to claim 2, characterized in that: A pressing block is provided at the top of the limit shaft, a groove is provided on the pressing block, internal threads are provided in the groove, and the bottom end of the limit rod is threadedly connected with the groove.
4. The anti-theft bolt according to claim 3, wherein: Blocking blocks are detachably installed at both ends of the limit shaft.
5. The anti-theft bolt according to claim 4, characterized in that: The nut includes a disc head, a square block is provided at the bottom of the disc head, and the nut is detachably installed and connected with the threaded section.