Anti-theft screw fastener

Abstract

The utility model discloses an anti-theft screw fastener which comprises a screw body, the screw body further comprises a bolt head and a screw rod, a groove is formed in the end, away from the screw rod, of the bolt head, a square block is fixedly connected to the inner bottom wall of the groove, a clamping groove and a rotating groove which are symmetrical are formed in the inner wall of the groove, and a protective cover is movably connected into the groove. Two symmetrical clamping blocks are fixedly connected to the outer wall of the protective cover, two symmetrical clamping strips are movably connected into the clamping grooves, through the arrangement of the grooves and the square blocks, an effective anti-theft effect can be achieved, the screw can be twisted only by arranging a special tool, the square blocks are shielded through the use of the protective cover, and the square blocks are prevented from being directly exposed. The anti-theft screw has the advantages that the anti-theft screw is provided with the rotating grooves, the two clamping blocks are matched for use, the clamping blocks rotate in the rotating grooves, the protective cover is prevented from falling off, the protective cover is limited and stabilized through the anti-theft cover and the two clamping strips, stability of the protective cover is guaranteed, and the anti-theft effect of the screw in the using process is improved.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, specifically to an anti-theft screw fastener. Background Technology

[0002] A screw is a common mechanical part, generally consisting of a head and a threaded shank. Its threads can mate with a nut or be screwed directly into a threaded hole, thus serving to connect and fasten objects. For example, wood screws are frequently used in furniture assembly to join wooden boards; in the field of machinery manufacturing, various metal screws are used to fix mechanical parts, ensuring the stable operation of machines.

[0003] Existing screws all use a bolt head and a threaded shank to fix connecting parts. However, their structure is simple. During use, the bolt head of the screw is directly exposed to the outside and can be easily disassembled with a screwdriver or wrench, which can lead to the theft of the screw or equipment. They do not have a good anti-theft effect, thus reducing the practicality of the screw. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide an anti-theft screw fastener that solves the problem that screws, when in use, have a simple structure with the bolt head directly exposed to the outside, making them easy for thieves to quickly remove with a screwdriver or wrench, resulting in poor anti-theft performance and theft of screws or equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-theft screw fastener, comprising a screw body, the screw body further comprising a bolt head and a screw rod, a groove being provided at the end of the bolt head away from the screw rod, a block being fixedly connected to the bottom wall of the groove, two symmetrical slots and a rotating groove being respectively provided on the inner wall of the groove, a protective cover being movably connected in the groove, two symmetrical blocks being fixedly connected to the outer wall of the protective cover, two symmetrical strips being movably connected in the slots, and an anti-theft cover being fixedly connected between the two strips.

[0006] The beneficial effects of this utility model are as follows: the groove and square design effectively prevent theft. Special tools are required to turn the screw. The protective cover shields the square, preventing it from being directly exposed. The two locking blocks rotate within the groove, preventing the protective cover from falling off. The anti-theft cover and two locking strips limit and stabilize the protective cover, ensuring its stability and improving the anti-theft effect of the screw during use.

[0007] In order to secure the protective cover;

[0008] As a further improvement to the above technical solution: the protective cover has two symmetrical mating grooves, the mating grooves extend into the bolt heads, and a mating post is movably connected in the mating grooves, the mating post being fixedly connected to the anti-theft cover;

[0009] The beneficial effects of this improvement are: by using the connecting groove and docking post, the protective cover can be fixed, preventing it from rotating in the opposite direction, ensuring the stability of the protective cover, and preventing it from rotating arbitrarily.

[0010] In order to limit the movement of the card block;

[0011] As a further improvement to the above technical solution: a first limiting block and a second limiting block are fixedly connected in the rotating groove, and the first limiting block and the second limiting block are symmetrically staggered from each other;

[0012] The beneficial effects of this improvement are as follows: by using the first limit block and the second limit block, the two locking blocks can be limited respectively, ensuring that the two locking blocks are accurately positioned during rotation in the rotating groove, preventing excessive rotation, ensuring the stability of the protective cover, and preventing it from rotating on its own.

[0013] In order to secure the anti-theft cover;

[0014] As a further improvement to the above technical solution: a magnetic block is fixedly connected to the side of the protective cover away from the block, an iron block is attracted to the side of the magnetic block, and the iron block is fixedly connected to the anti-theft cover;

[0015] The beneficial effects of this improvement are: the cooperation between the magnetic block and the iron block can make a stable connection between the anti-theft cover and the protective cover, ensuring the stability of the anti-theft cover and preventing it from falling off or shaking from the bolt head.

[0016] To achieve a stable connection between the bolt head and the anti-theft cover;

[0017] As a further improvement to the above technical solution: a sealing groove is provided at the end of the bolt head away from the screw, and a rubber ring is movably connected in the sealing groove, and the rubber ring is fixedly connected to the anti-theft cover;

[0018] The beneficial effects of this improvement are: by using the sealing groove and rubber ring, a stable connection can be made between the anti-theft cover and the bolt head, and a large frictional force can be generated between the rubber ring and the bolt head, thereby ensuring that the anti-theft cover is stable enough and will not fall off.

[0019] Special tools are required to remove the anti-theft cover to protect it.

[0020] As a further improvement to the above technical solution: the anti-theft cover is provided with a pentagonal groove;

[0021] The beneficial effects of this improvement are: the use of pentagonal slots allows the anti-theft cover to be rotated, making it easy to disassemble; and the pentagonal slots require a special tool to rotate, thus improving the security of the anti-theft cover.

[0022] In order to accurately identify the rotational position of the protective cover;

[0023] As a further improvement to the above technical solution: an identification block is fixedly connected to the protective cover;

[0024] The beneficial effects of this improvement are: by using the identification block, the rotation position of the protective cover can be identified, which facilitates the quick disassembly of the protective cover, the subsequent removal of screws, and the maintenance of the equipment.

[0025] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0026] Figure 1 Schematic diagram of the three-dimensional structure provided by this utility model Figure 1 ;

[0027] Figure 2 Front view provided for this utility model;

[0028] Figure 3 Provided by this utility model Figure 2 A three-dimensional cross-sectional view at point AA;

[0029] Figure 4 Provided by this utility model Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 The right view provided for this utility model;

[0031] Figure 6 Provided by this utility model Figure 5 3D cross-sectional view at point BB;

[0032] Figure 7 Schematic diagram of the three-dimensional structure provided by this utility model Figure 2 ;

[0033] Figure 8 Schematic diagram of the three-dimensional structure provided by this utility model Figure 3 .

[0034] In the diagram, 1. Screw body; 11. Bolt head; 12. Screw; 13. Groove; 14. Block; 15. Slot; 16. Rotating groove; 17. Protective cover; 18. Locking block; 19. Locking strip; 20. Anti-theft cover; 31. Connecting groove; 32. Connecting post; 41. First limiting block; 42. Second limiting block; 51. Magnetic block; 52. Iron block; 61. Sealing groove; 62. Rubber ring; 71. Pentagonal hole groove; 81. Identification block. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0036] like Figures 1 to 8As shown in the figure, an anti-theft screw fastener provided by this utility model includes a screw body 1, which also includes a bolt head 11 and a screw 12. A groove 13 is formed at the end of the bolt head 11 away from the screw 12. A block 14 is fixedly connected to the bottom wall of the groove 13. The use of the groove 13 in conjunction with the block 14 requires a suitable special tool to rotate the screw body 1 for fastening or disassembly. Two symmetrical slots 15 and a rotating groove 16 are respectively formed on the inner wall of the groove 13. A protective cover 17 is movably connected within the groove 13, which can shield and protect the block 14. Two symmetrical slots 16 are fixedly connected to the outer wall of the protective cover 17. 8. Two symmetrical locking strips 19 are movably connected within the slot 15. An anti-theft cover 20 is fixedly connected between the two locking strips 19. Together with the two locking blocks 18, this ensures a stable connection between the protective cover 17 and the bolt head 11. The two locking strips 19 and the anti-theft cover 20 also stabilize the protective cover 17. Two symmetrical mating grooves 31 are formed on the protective cover 17, extending into the bolt head 11. A mating post 32 is movably connected within the mating groove 31 and fixedly connected to the anti-theft cover 20. The use of the two mating grooves 31 and the two mating posts 32 makes the protective cover 17 more stable and prevents it from rotating arbitrarily. The rotating groove 16 is respectively fixed within... The device is fixedly connected by a first limiting block 41 and a second limiting block 42. The first limiting block 41 and the second limiting block 42 are symmetrically offset from each other. The use of the first limiting block 41 and the second limiting block 42 limits the movement of the locking block 18, preventing excessive rotation and ensuring the accurate rotation position of the protective cover 17. This facilitates accurate docking of the docking post 32 and the docking groove 31. A magnetic block 51 is fixedly connected to the side of the protective cover 17 away from the block 14. An iron block 52 is attracted to the side of the magnetic block 51 and is fixedly connected to the anti-theft cover 20. The use of the magnetic block 51 and the iron block 52 ensures a stable connection between the anti-theft cover 20 and the protective cover 17, preventing the anti-theft cover 20 from detaching or shaking. A sealing groove 61 is provided at the end of the bolt head 11 away from the screw 12. A rubber ring 62 is movably connected in the sealing groove 61. The rubber ring 62 is fixedly connected to the anti-theft cover 20. The use of the sealing groove 61 and the rubber ring 62 can seal the groove 13, so that the rubber pad and the bolt head 11 generate greater friction, further stabilizing the anti-theft cover 20. A pentagonal hole groove 71 is provided on the anti-theft cover 20. The use of the pentagonal hole groove 71 can facilitate the rotation of the anti-theft cover 20. A special pentagonal tool is required to improve security. An identification block 81 is fixedly connected to the protective cover 17. The identification block 81 can facilitate the accurate rotation of the protective cover 17 and facilitate subsequent disassembly.

[0037] The working principle and usage process of this utility model are as follows: First, when the screw body 1 needs to be tightened, a special tool with a square hole is used to connect with the square block 14 to fix the screw body 1. After fixing, two locking blocks 18 on the outer wall of the protective cover 17 are connected with two locking slots 15 on the inner wall of the groove 13, allowing the two locking blocks 18 to move into the rotating groove 16. The protective cover 17 is then rotated, causing the two locking blocks 18 to respectively land on one side of the first limiting block 41 and the second limiting block 42. The connecting post 32 on the anti-theft cover 20 is then connected with the connecting groove 31, thus stabilizing the protective cover 17. During the connection process of the anti-theft cover 20, the rubber ring 62 connects with the sealing groove 61, and the iron block 52 attracts the magnetic block 51, thereby fixing the anti-theft cover 20. When the anti-theft cover 20 needs to be disassembled, a special pentagonal tool is required to connect with the pentagonal slot 71. This completes the entire usage process of the anti-theft screw fastener.

[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An anti-theft screw fastener, comprising a screw body (1), characterized in that: The screw body (1) also includes a bolt head (11) and a screw rod (12). A groove (13) is provided at the end of the bolt head (11) away from the screw rod (12). A block (14) is fixedly connected to the bottom wall of the groove (13). Two symmetrical slots (15) and a rotating groove (16) are respectively provided on the inner wall of the groove (13). A protective cover (17) is movably connected in the groove (13). Two symmetrical blocks (18) are fixedly connected to the outer wall of the protective cover (17). Two symmetrical strips (19) are movably connected in the slots (15). An anti-theft cover (20) is fixedly connected between the two strips (19).

2. The anti-theft screw fastener according to claim 1, characterized in that: The protective cover (17) has two symmetrical docking grooves (31) that extend into the bolt head (11). A docking post (32) is movably connected in the docking groove (31) and is fixedly connected to the anti-theft cover (20).

3. The anti-theft screw fastener according to claim 1, characterized in that: The first limiting block (41) and the second limiting block (42) are fixedly connected in the rotating groove (16), and the first limiting block (41) and the second limiting block (42) are symmetrically staggered.

4. The anti-theft screw fastener according to claim 1, characterized in that: A magnetic block (51) is fixedly connected to the side of the protective cover (17) away from the block (14), and an iron block (52) is attracted to the side of the magnetic block (51). The iron block (52) is fixedly connected to the anti-theft cover (20).

5. The anti-theft screw fastener according to claim 1, characterized in that: A sealing groove (61) is provided at one end of the bolt head (11) away from the screw (12), and a rubber ring (62) is movably connected in the sealing groove (61). The rubber ring (62) is fixedly connected to the anti-theft cover (20).

6. The anti-theft screw fastener according to claim 1, characterized in that: The anti-theft cover (20) has a pentagonal slot (71).

7. The anti-theft screw fastener according to claim 1, characterized in that: An identification block (81) is fixedly connected to the protective cover (17).

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