Conical triangular anti-theft bolt and wrench

Abstract

The utility model relates to the technical field of bolts, and provides a conical triangular anti-theft bolt and a wrench, which comprise a first stud, a second stud, a third stud and a fourth stud, the second stud is rotationally arranged in the cavity; and the screw head is arranged at one end of the second stud. By means of the technical scheme, the problem that in the prior art, an anti-theft bolt can be opened due to the fact that a tool can be imitated through the appearance of the anti-theft bolt is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts, and in particular to a conical triangular anti-theft bolt and a wrench. Background Art

[0002] Anti-theft bolts, also known as anti-loosening bolts or security bolts, are specially designed bolts that are intended to prevent unauthorized removal or tampering. They are used in a variety of fields, especially when it is necessary to ensure that components remain firmly connected and cannot be easily separated without authorization, such as in the automotive, aerospace, railway vehicle, construction and energy production industries. The anti-theft bolts in the prior art can imitate tools through their appearance, causing the anti-theft bolts to be opened. Utility Model Content

[0003] The utility model provides a conical triangular anti-theft bolt and a wrench, which solves the problem in the related art that the anti-theft bolt can be opened by imitating a tool through its appearance.

[0004] The technical solution of the utility model is as follows:

[0005] Conical triangular anti-theft bolt, including:

[0006] A first stud having threads on the outer side and a cavity on the inner side;

[0007] a second stud, rotatably disposed in the cavity;

[0008] The screw head is arranged on one end of the second screw bolt.

[0009] Optionally, one end of the cavity has an annular groove, the other end of the second stud has a first protrusion, and the first protrusion is rotatably disposed in the annular groove.

[0010] Optionally, the other end of the cavity has a first opening, the second stud penetrates into the cavity through the first opening, the cavity is a conical cavity, and the diameter of the cavity gradually decreases from the first opening toward the annular groove.

[0011] Optionally, the second stud is a tapered stud, and a diameter of the second stud gradually decreases from the screw head toward the first protrusion.

[0012] Optionally, the screw head is a truncated cone structure, and the screw head has a plurality of slots arranged at intervals along the circumference of the screw head;

[0013] The clamping groove has a force-applying end surface and a transition arc end surface.

[0014] Optionally, the second stud has a first through slot, the screw head has a second through slot, the first through slot and the second through slot are connected, the first through slot has a plurality of second openings, the cavity has a plurality of first grooves, and the second openings are used to correspond one-to-one with the first grooves.

[0015] Optionally, the first through groove is a tapered groove.

[0016] A wrench, comprising:

[0017] A main body having a second groove, wherein the second groove matches the screw head;

[0018] A fixing strip has one end arranged in the second groove and the other end provided with a plurality of second protrusions. The fixing strip is used to slide into the first through groove, and the second protrusions are used to be inserted into the first groove through the second opening.

[0019] Optionally, the fixing bar is a tapered bar.

[0020] The working principle and beneficial effects of the utility model are:

[0021] In the utility model, in order to solve the problem that the anti-theft bolt in the prior art can be opened by imitating tools through its appearance, the first stud is made of high-strength alloy material, and the outer surface is processed with standard or customized threads so as to be fixed with the corresponding nut. A cavity is designed on the inside to provide space for the embedding of the second stud. The second stud is installed in the cavity inside the first stud, and can rotate freely but cannot move axially. A screw head is designed at one end to facilitate operation with special tools. The second stud and the special structure inside the first stud realize locking or unlocking of the first stud. This design makes it difficult to illegally disassemble the bolt without the correct tools and methods. During installation, the first stud is first installed in the cavity, and then the second stud is made to interact with the special structure inside the first stud through the tool to complete the locking. This mechanism ensures that it can only be operated with specific tools and methods.

[0022] The conical triangular anti-theft bolt achieves a high degree of security protection and is widely used in application scenarios that require high-level security protection, such as public facilities, high-end equipment, electronic product security protection and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the screw head structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the wrench of the utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the utility model after assembly.

[0029] In the figure: 100, first stud, 110, cavity, 200, second stud, 300, screw head, 111, annular groove, 210, first protrusion, 112, first opening, 310, slot, 311, force-applying end face, 312, transition arc end face, 220, first through slot, 320, second through slot, 221, second opening, 113, first groove, 400, main body, 410, second groove, 500, fixing strip, 510, second protrusion. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, they can also be understood as further technical solutions without paying creative work. In some figures, components with the same structure or function are only schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0031] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] Reference Figure 1~Figure 5 , which is the first embodiment of the utility model, proposes

[0034] Conical triangular anti-theft bolt, including:

[0035] A first stud 100 having threads on the outside and a cavity 110 on the inside;

[0036] A second stud 200 is rotatably disposed in the cavity 110;

[0037] The screw head 300 is disposed on one end of the second screw bolt 200 .

[0038] In this embodiment, in order to solve the problem that the anti-theft bolt in the prior art can be opened by imitating tools through its appearance, the first stud 100 is made of high-strength alloy material, and the outer surface is processed with standard or customized threads so as to be fixed with the corresponding nut. A cavity 110 is designed on the inside to provide space for the embedding of the second stud 200. The second stud 200 is installed in the cavity 110 inside the first stud 100, and can rotate freely but cannot move axially. A screw head 300 is designed at one end to facilitate operation with special tools. The special structure of the second stud 200 and the first stud 100 realizes the locking or unlocking of the first stud 100. After locking, the first stud 100 and the second stud 200 rotate together, and the nut is tightened. The nut has the same structure as the screw head. After unlocking, the second stud 200 rotates idly. This design makes it difficult to illegally remove the bolt without the correct tools and methods. During installation, the first stud 100 is first installed in the cavity 110, and then the second stud 200 is locked by using a tool to interact with the special structure inside the first stud 100. This mechanism ensures that the operation can only be performed using specific tools and methods.

[0039] The conical triangular anti-theft bolt of this embodiment achieves a high degree of security protection through a unique double-layer structure design, and is widely used in application scenarios that require a high level of security protection, such as public facilities, high-end equipment, electronic product security protection and other fields.

[0040] Furthermore, one end of the cavity 110 has an annular groove 111 , and the other end of the second stud 200 has a first protrusion 210 , and the first protrusion 210 is rotatably disposed in the annular groove 111 .

[0041] In this embodiment, in order to prevent the second bolt from accidentally slipping out of the cavity 110, an annular groove 111 is designed at one end of the cavity 110 inside the first stud 100. The size and shape of the annular groove 111 precisely match the first protrusion 210 carried by one end of the second stud 200. The other end of the second stud 200 is designed with a first protrusion 210 that matches the annular groove 111. The surface treatment of the first protrusion 210 ensures its smoothness during rotation, reduces wear and prolongs its service life. Through the precise matching of the annular groove 111 and the first protrusion 210, it is achieved that the first stud 100 and the second stud 200 can only rotate relative to each other.

[0042] Furthermore, the other end of the cavity 110 has a first opening 112 , and the second stud 200 penetrates into the cavity 110 through the first opening 112 . The cavity 110 is a tapered cavity, and the diameter of the cavity 110 gradually decreases from the first opening 112 toward the annular groove 111 .

[0043] In this embodiment, in order to improve the anti-theft performance and installation convenience of the bolt. A first opening 112 is provided at one end of the cavity 110, which is the entrance for the second stud 200 to penetrate into the cavity 110. The interior of the cavity 110 is designed as a conical cavity, and its diameter gradually decreases from the end of the first opening 112 to the annular groove 111. This conical design is not only convenient for the installation and positioning of the second stud 200, but more importantly, it enhances the stability of the internal structure of the bolt, so that once the second stud 200 is correctly inserted and locked, it can be more securely stuck in the conical cavity 110 when subjected to the force of illegal disassembly attempts by the outside world, and it is difficult to be pulled out. The shape of the second stud 200 perfectly matches the conical cavity 110, and its gradually tapering design echoes the cavity 110, ensuring that after the bolt is fully installed, the position of the second stud 200 in the cavity 110 is stable and it is almost impossible to rotate or pull out by external force. The rotation locking mechanism of the first protrusion 210 in the annular groove 111 cooperates with the conical cavity 110 to form a double-insurance anti-theft system. During the installation process, its safety performance and convenience of operation are improved, providing a more reliable choice for various high-security applications. In this embodiment, the first protrusion 210 can be designed as an elliptical structure. The first protrusion 210 rotates on the second stud 200. After the first protrusion 210 rotates, it is no longer perpendicular to the second stud 200. The longer end of the elliptical first protrusion 210 extends into the first opening 112 and directly into the annular groove 111. The design of the annular groove 111 allows the first protrusion 210 to be completely stuck in the annular groove 111 and cannot be dislodged.

[0044] Furthermore, the second stud 200 is a tapered stud, and the diameter of the second stud 200 gradually decreases from the screw head 300 toward the first protrusion 210 .

[0045] In this embodiment, in order to strengthen the supporting force of the second stud 200, the second stud 200 is also designed to be a tapered structure, so that the supporting force of the second stud 200 is greater.

[0046] Furthermore, the screw head 300 is a truncated cone structure, and the screw head 300 has a plurality of slots 310 arranged at intervals along the circumference of the screw head 300;

[0047] The slot 310 has a force-applying end surface 311 and a transition arc-shaped end surface 312 .

[0048] In this embodiment, the screw head 300 of the bolt is designed to be truncated cone-shaped, and a number of slots 310 are evenly distributed on the circumferential surface of the screw head 300. These slots 310 are designed to be arranged at intervals, which not only ensures the firm engagement of the tool, but also facilitates the accurate positioning of the tool during operation, avoids slippage, and improves the safety and efficiency of the operation. Each slot 310 has two end faces of different shapes: a force-applying end face 311 and a transition arc end face 312. When tightening, the force-applying end face 311 can fit the tool to achieve tightening. When loosening, the transition arc end face 312 cannot fit the tool, so that the tool and the transition arc end face 312 slide relative to each other, so general tools cannot be loosened, and only specific tools can be used to loosen. This design is particularly suitable for those occasions with extremely high requirements for safety and ease of operation.

[0049] Furthermore, the second stud 200 has a first through slot 220, the screw head 300 has a second through slot 320, the first through slot 220 and the second through slot 320 are connected, the first through slot 220 has a plurality of second openings 221, the cavity 110 has a plurality of first grooves 113, and the second openings 221 are used to correspond one-to-one with the first grooves 113.

[0050] In this embodiment, in addition to the screw head 300 for rotation, the second stud 200 is also designed with a first long through slot 220 extending therethrough. The first through slot 220 extends axially along the second stud 200. The first through slot 220 provides an access point for a specific unlocking tool, which facilitates the operation of the first bolt. The screw head 300 is also designed with a second through slot 320, which is connected to the first through slot 220 in the second stud 200, forming a continuous channel running through the second stud 200 and the screw head 300. A plurality of second openings 221 are provided at specific positions of the first through slot 220, the size and position of which are designed to accurately correspond to the first groove 113 mentioned later after rotation. The function of the second opening 221 is that when a specific tool is inserted, the specific tool can fix the first stud 100 and the second stud 200 together through the second opening 221 and the first groove 113, so that the first stud 100 and the second stud 200 cannot rotate relative to each other, and the second opening 221 realizes the key interface for locking or unlocking the first stud 100 and the second stud 200. When installing or removing the bolt, the specific unlocking tool is inserted through the second through groove 320 and the first through groove 220, and meshes with the first groove 113 and the second opening 221 one by one, and the bolt is locked through the rotation action.

[0051] If the first stud 100 and the second stud 200 cannot be rotated synchronously using a specific tool, they cannot be disassembled. The position and structure of the second opening 221 and the first groove 113 can be changed at will, which greatly increases the difficulty of illegal disassembly and improves the safety protection level of the bolt.

[0052] Furthermore, the first through groove 220 is a tapered groove.

[0053] In this embodiment, in order to strengthen the structure, corresponding to the tapered first through slot 220, the specially made unlocking tool is also designed with a tapered head to ensure perfect matching with the first through slot 220. To prevent the specially made unlocking tool from breaking when twisting the first stud 100 and the second stud 200 in the first through slot 220, the first through slot 220 is designed as a tapered slot structure in this solution. The tapered design helps with automatic alignment and reduces misoperation. At the same time, as the tool goes deeper, the tapered contact surface can ensure stability and control during operation.

[0054] A wrench, comprising:

[0055] The main body 400 has a second groove 410, and the second groove 410 matches with the screw head 300;

[0056] The fixing bar 500 has one end disposed in the second groove 410 and the other end having a plurality of second protrusions 510 . The fixing bar 500 is used to slide into the first through groove 220 , and the second protrusions 510 are used to be inserted into the first groove 113 through the second opening 221 .

[0057] The fixing bar 500 is a tapered bar.

[0058] In this embodiment, the main body 400 of the wrench is made of high-strength, wear-resistant materials to ensure durability and stability under high torque operation. The main body 400 is designed with a second groove 410, which accurately matches the shape of the screw head 300 of the anti-theft bolt, ensuring a close fit during operation, avoiding slippage, and improving the accuracy of the operation. A conical fixing strip 500 is integrated inside the wrench, one end of which is fixed in the second groove 410 of the wrench main body 400, and the other end is designed to be conical and has a plurality of second protrusions 510. The conical design helps the fixing strip 500 to slide smoothly into the conical first through groove 220 in the second stud 200, and the second protrusion 510 at the end of the fixing strip 500 is designed to completely correspond to the first groove 113 in the cavity 110 of the first stud 100. When the fixing strip 500 of the wrench slides into the first through groove 220 and passes through the second opening 221, these second protrusions 510 can be accurately snapped into the corresponding first groove 113. The second stud 200 and the first stud 100 can be accurately controlled to rotate simultaneously.

[0059] When in use, the operator aligns the second groove 410 of the wrench with the bolt head, and then slides the tapered end of the fixing strip 500 into the first through groove 220 until the second protrusion 510 is accurately inserted into the first groove 113. At this time, the wrench, the first stud 100 and the second stud 200 form a stable whole. By rotating the wrench, the second stud 200 and the first stud 100 can be accurately controlled to rotate simultaneously to achieve the tightening or loosening of the bolt. Since the second protrusion 510 and the first groove 113 are specially matched, it significantly increases the difficulty of operation by unauthorized persons and improves the anti-theft performance of the bolt system.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Conical triangular anti-theft bolt, characterized in that: include: A first stud (100) having a thread on the outside and a cavity (110) on the inside; A second stud (200), configured to be rotatably disposed in the cavity (110); The screw head (300) is arranged on one end of the second screw bolt (200).

2. The tapered triangular anti-theft bolt according to claim 1, characterized in that: One end of the cavity (110) has an annular groove (111), and the other end of the second stud (200) has a first protrusion (210), and the first protrusion (210) is rotatably disposed in the annular groove (111).

3. The tapered triangular anti-theft bolt according to claim 2, characterized in that: The other end of the cavity (110) has a first opening (112), and the second stud (200) penetrates into the cavity (110) through the first opening (112). The cavity (110) is a conical cavity, and the diameter of the cavity (110) gradually decreases from the first opening (112) toward the annular groove (111).

4. The tapered triangular anti-theft bolt according to claim 2, characterized in that: The second stud (200) is a conical stud, and the diameter of the second stud (200) gradually decreases from the screw head (300) towards the first protrusion (210).

5. The tapered triangular anti-theft bolt according to claim 1, characterized in that: The screw head (300) is a truncated cone structure, and the screw head (300) has a plurality of slots (310) arranged at intervals along the circumference of the screw head (300); The clamping groove (310) has a force-applying end surface (311) and a transition arc-shaped end surface (312).

6. The tapered triangular anti-theft bolt according to claim 1, characterized in that: The second stud (200) has a first through slot (220), the screw head (300) has a second through slot (320), the first through slot (220) and the second through slot (320) are connected, the first through slot (220) has a plurality of second openings (221), the cavity (110) has a plurality of first grooves (113), and the second openings (221) are used to correspond one-to-one with the first grooves (113).

7. The tapered triangular anti-theft bolt according to claim 6, characterized in that: The first through groove (220) is a tapered groove.

8. A wrench, characterized in that: Used to fasten the conical triangular anti-theft bolt according to any one of claims 1 to 6, comprising: The main body (400) has a second groove (410), and the second groove (410) matches with the screw head (300); A fixing strip (500) has one end disposed in the second groove (410) and the other end having a plurality of second protrusions (510); the fixing strip (500) is used to slide into the first through groove (220); and the second protrusions (510) are used to snap into the first groove (113) through the second opening (221).

9. A wrench according to claim 8, characterized in that: The fixing strip (500) is a tapered strip.

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