Anti-theft bolt

Abstract

The utility model relates to an anti-theft bolt which comprises a bolt body, a conical hole expanding from top to bottom is formed in the central axis direction of the bolt body in a penetrating mode, an anti-theft pin rod is inserted into the conical hole, and a plurality of limiting assemblies are arranged at the lower end of the anti-theft pin rod. A circular groove is formed in the upper end of the bolt body, an abutting block is fixedly connected to the upper end of the anti-theft pin rod, an inner hexagonal screw head is fixedly connected to the upper end of the abutting block, the abutting block abuts against the bottom of the circular groove, and a breaking piece is arranged between the circular groove and the abutting block in a matched mode. When the breaking part is not broken, the bolt body can be driven to rotate by rotating the anti-theft pin rod, and after the bolt is fixed in the threaded hole, an operator breaks and takes out the breaking part, so that the bolt body and the anti-theft pin rod become two independent individuals, and the anti-theft pin rod rotates relative to the bolt body in the conical hole; therefore, the anti-theft purpose is achieved.

Description

Technical Field

[0001] The utility model relates to a bolt, in particular to an anti-theft bolt. Background Art

[0002] A bolt is a threaded fastener that is paired with a nut. It is the most common fastener in important infrastructure in the field and is widely used in railways, highway bridges, large-scale power transmission equipment, and large-scale communication equipment.

[0003] The parts of large-scale livelihood equipment are expensive and easily coveted by criminals. Since the commonly used bolts have a simple structure and are easy to disassemble, criminals can easily destroy the bolts and steal expensive parts, causing serious safety hazards to livelihood facilities and causing serious property losses to the country. Therefore, we need an anti-theft bolt to prevent theft by criminals. Utility Model Content

[0004] The utility model provides an anti-theft bolt, which solves the above problems existing in the use process of the prior art.

[0005] The technical solution of the utility model is implemented as follows: an anti-theft bolt comprises a bolt body, a tapered hole extending from top to bottom is penetrated in the central axis direction of the bolt body, an anti-theft pin rod is inserted in the tapered hole, and a plurality of limit assemblies are arranged at the lower end of the anti-theft pin rod;

[0006] A circular groove is provided at the upper end of the bolt body, a stop block is fixedly connected to the upper end of the anti-theft pin rod, a hexagonal screw head is fixedly connected to the upper end of the stop block, the stop block abuts against the bottom of the circular groove, and a breaking piece is provided between the circular groove and the stop block.

[0007] The utility model is further configured as follows: the limit assembly includes a conical ring;

[0008] The conical ring is fixedly connected to the lower end side wall of the anti-theft pin rod, the conical ring expands from bottom to top, a plurality of deformation gaps are opened on the side wall of the conical ring, and the upper end outer edge of the conical ring is abutted against the inner side wall of the conical hole.

[0009] The utility model is further configured as follows: the outer edge of the conical ring is provided with a rounded corner.

[0010] The utility model is further configured as follows: a lower groove is provided at the junction of the side wall and the bottom surface of the circular groove, the lower end of the breaking piece is inserted into the lower groove, an upper sticking groove is provided on the side wall of the abutment block, and the inner side wall of the upper end of the breaking piece abuts against the upper sticking groove;

[0011] The breaking piece is provided with a fold;

[0012] A connecting structure is provided between the breaking piece and the upper sticking groove.

[0013] The utility model is further configured as follows: the fold includes an inner fold and an outer fold, and the size of the inner fold is larger than that of the outer fold.

[0014] The utility model is further configured as follows: a conical section is integrally formed at the lower end of the breaking piece, a conical groove corresponding to the conical section is opened at the lower end of the lower groove, and the conical section is inserted into the conical groove.

[0015] The utility model is further configured as follows: the connection structure includes a connection piece, and the connection piece is fixedly connected to the inner side wall of the breaking piece;

[0016] A connecting groove is provided on the upper sticking groove, the connecting piece is inserted into the connecting groove, and a bending handle is fixedly connected to the upper end of the breaking piece.

[0017] In summary, the beneficial effects of the utility model are:

[0018] When the breaking piece is not broken, the bolt body and the anti-theft pin rod are a whole. Rotating the anti-theft pin rod can drive the bolt body to rotate. When the bolt is fixed in the threaded hole, the operator breaks and removes the breaking piece, so that the bolt body and the anti-theft pin rod become two independent individuals. When the lawless elements rotate the anti-theft pin rod, the anti-theft pin rod can only rotate relative to the bolt body in the tapered hole, and cannot rotate the bolt body, thereby achieving the purpose of anti-theft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 for Figure 2 A partial enlarged schematic diagram in the middle;

[0023] Figure 4 for Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0024] Figure 5 It is a structural schematic diagram of the bolt body in the utility model;

[0025] Figure 6 It is a structural schematic diagram of the anti-theft pin rod in the utility model;

[0026] Figure 7 for Figure 6 A partial enlarged schematic diagram of point C in the middle.

[0027] Numbers in the figure: 11, bolt body; 12, tapered hole; 13, anti-theft pin rod; 14, circular groove; 15, stop block; 16, breaking piece; 17, tapered ring; 18, deformation gap; 19, lower groove; 20, upper groove; 21, inner fold; 22, outer fold; 23, tapered section; 24, tapered groove; 25, connecting piece; 26, connecting groove; 27, bending handle. DETAILED DESCRIPTION

[0028] The following will be combined with the attached embodiment of the utility model Figure 1-7 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example:

[0030] like Figures 1 to 7 As shown, an anti-theft bolt comprises a bolt body 11, a tapered hole 12 extending from top to bottom is formed through the bolt body 11 in the direction of the central axis, an anti-theft pin rod 13 is inserted into the tapered hole 12, and a plurality of limit assemblies for preventing the anti-theft pin rod 13 from moving upward are provided at the lower end of the anti-theft pin rod 13;

[0031] A circular groove 14 is formed at the upper end of the bolt body 11, a stopper 15 is fixedly connected to the upper end of the anti-theft pin rod 13, a hexagonal screw head is fixedly connected to the upper end of the stopper 15, the stopper 15 abuts against the bottom of the circular groove 14, and a breaking piece 16 is provided between the circular groove 14 and the stopper 15.

[0032] Wherein, the limiting assembly includes a conical ring 17;

[0033] The conical ring 17 is fixedly connected to the lower end side wall of the anti-theft pin rod 13 , and the conical ring 17 expands from bottom to top. A plurality of deformation gaps 18 are opened on the side wall of the conical ring 17 , and the upper end outer edge of the conical ring 17 abuts against the inner side wall of the conical hole 12 .

[0034] The conical ring 17 in this embodiment is made of elastic material. When the operator inserts the anti-theft pin rod 13 into the conical hole 12, the conical ring 17 contracts inwardly so that the anti-theft pin rod 13 can enter the conical hole 12. During the process of inserting the anti-theft pin rod 13, as the space in the conical hole 12 becomes larger, the conical ring 17 expands outwardly and makes its outer edge abut against the inner wall of the conical hole 12. If the anti-theft pin rod 13 is to be pulled out upward, since the aperture of the upper end of the conical hole 12 is smaller than the expanded conical ring 17, the thief cannot pull the anti-theft pin rod 13 in his hand out of the conical hole 12.

[0035] In addition, in order to facilitate the installation worker to insert the anti-theft pin rod 13 into the tapered hole 12 during assembly, the outer edge of the tapered ring 17 is provided with rounded corners.

[0036] The specific connection method of the breaking piece 16, the bolt body 11 and the anti-theft pin rod 13 is as follows: a lower groove 19 is opened at the junction of the side wall and the bottom surface of the circular groove 14, the lower end of the breaking piece 16 is inserted into the lower groove 19, and an upper groove 20 is opened on the side wall of the abutment block 15, and the inner side wall of the upper end of the breaking piece 16 abuts against the upper groove 20. The above-mentioned breaking piece 16 makes the two independent components of the bolt body 11 and the anti-theft pin rod 13 become a whole, so that when the utility model is installed, the bolt body 11 and the anti-theft pin rod 13 can be driven to rotate at the same time.

[0037] Furthermore, the breaking piece 16 is provided with folds, and the folds include an inner fold 21 and an outer fold 22;

[0038] A connection structure is provided between the breaking piece 16 and the upper sticking groove 20, and the connection structure includes a connection piece 25, and the connection piece 25 is fixedly connected to the inner side wall of the breaking piece 16;

[0039] The upper sticking groove 20 is provided with a connecting groove 26, and the connecting piece 25 is inserted in the connecting groove 26. The lower end of the breaking piece 16 is integrally formed with a conical section 23, and the lower end of the lower groove 19 is provided with a conical groove 24 corresponding to the conical section 23. The conical section 23 is inserted in the conical groove 24 to ensure that the lower end of the breaking piece 16 will not fall off from the lower groove 19.

[0040] Through the above structure, the bolt body 11 and the anti-theft pin rod 13 are connected as a whole.

[0041] In addition, the upper end of the breaking piece 16 is fixedly connected with a bending handle 27. When the utility model is installed, the installation worker can bend the bending handle 27 outward through the inner fold 21, so that the upper end of the breaking piece is broken along the inner fold 21, so that the bolt body 11 and the anti-theft pin rod 13 become two independent parts. The opening of the outer fold 22 increases the deformation amplitude of the breaking piece.

[0042] It should be noted here that the inner wall of the breaking piece 16 fits with the inner wall of the stop block 15, and the breaking piece 16 is relatively thin. Therefore, after the breaking piece 16 is broken, the anti-theft pin rod 13 and the bolt body 11 are still two independent components, and the breaking piece 16 is not easy to be removed after being broken, thereby achieving the purpose of anti-theft.

[0043] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-theft bolt, comprising a bolt body (11), characterized in that: A tapered hole (12) extending from top to bottom is formed through the bolt body (11) in the direction of the central axis, an anti-theft pin rod (13) is inserted into the tapered hole (12), and a plurality of limit assemblies are provided at the lower end of the anti-theft pin rod (13); A circular groove (14) is formed at the upper end of the bolt body (11); a stopper (15) is fixedly connected to the upper end of the anti-theft pin rod (13); a hexagon socket screw head is fixedly connected to the upper end of the stopper (15); the stopper (15) abuts against the bottom of the circular groove (14); and a breaking piece (16) is provided between the circular groove (14) and the stopper (15).

2. The anti-theft bolt according to claim 1, characterized in that: The limiting assembly comprises a conical ring (17); The conical ring (17) is fixedly connected to the lower side wall of the anti-theft pin rod (13), the conical ring (17) expands from bottom to top, a plurality of deformation gaps (18) are provided on the side wall of the conical ring (17), and the upper outer edge of the conical ring (17) is abutted against the inner side wall of the conical hole (12).

3. The anti-theft bolt according to claim 2, characterized in that: The outer edge of the conical ring (17) is provided with a rounded corner.

4. The anti-theft bolt according to claim 1, characterized in that: A lower groove (19) is provided at the junction of the side wall and the bottom surface of the circular groove (14), and the lower end of the breaking piece (16) is inserted into the lower groove (19). An upper sticking groove (20) is provided on the side wall of the abutment block (15), and the inner side wall of the upper end of the breaking piece (16) abuts against the upper sticking groove (20); The breaking piece (16) is provided with a fold; A connecting structure is provided between the breaking piece (16) and the upper sticking groove (20).

5. The anti-theft bolt according to claim 4, characterized in that: The folds include an inner fold (21) and an outer fold (22), and the inner fold (21) is larger than the outer fold (22).

6. The anti-theft bolt according to claim 4, characterized in that: The lower end of the breaking piece (16) is integrally formed with a tapered section (23), the lower end of the lower groove (19) is provided with a tapered groove (24) corresponding to the tapered section (23), and the tapered section (23) is inserted into the tapered groove (24).

7. The anti-theft bolt according to claim 4, characterized in that: The connection structure comprises a connection sheet (25), wherein the connection sheet (25) is fixedly connected to the inner side wall of the breaking piece (16); The upper attachment groove (20) is provided with a connection groove (26), the connection piece (25) is inserted into the connection groove (26), and the upper end of the breaking piece (16) is fixedly connected with a bending handle (27).

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