Special fastener for anti-theft screw
By designing a multi-locking structure for special anti-theft screw fasteners, the problem of traditional screws being easily removed is solved, and the anti-theft effect is improved.
Patent Information
- Application Number
- CN202423134077.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Traditional screws in urban infrastructure are easily unscrewed by criminals, resulting in reduced anti-theft effectiveness and affecting public property and safety.
A special fastener for anti-theft screws is designed, which ensures a stable connection between the screw head and the anti-theft fastening part through a multiple locking structure of the screw head and the anti-theft fastening part, including a first docking block, an L-shaped locking rod and a locking end.
A stable connection between the screw head and the anti-theft fastening part is achieved, thereby preventing illegal removal and improving the anti-theft performance.
Smart Images
Figure CN223447449U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fastener technical field especially relates to a special fastener for anti-theft screw. BACKGROUND
[0002] As a basic fastener, screw is widely used in many fields, however, the fastening mode of traditional screw exposes many security hazards in urban infrastructure, street lamps, traffic signs, bus station facilities are scattered in the streets and alleys, these facilities are exposed for a long time, ordinary screw is easy to be twisted off by common screwdriver and wrench by lawbreakers, causing parts to be stolen, not only causing public property loss, but also possibly affecting traffic safety, even endangering the safety of pedestrians.
[0003] The conventional anti-theft fastener is relatively simple in structure, once the structure principle is known by lawbreakers, the fastening firmness and stability between the anti-theft fastening part and the screw head part are easy to be damaged, and then the fastener is removed and disassembled, resulting in the decline of anti-theft effect.
[0004] Therefore, it is necessary to provide a special fastener for anti-theft screw to solve the above technical problems. SUMMARY
[0005] The utility model provides a special fastener for anti-theft screw, solves the problem that the conventional anti-theft fastener is easy to be damaged and removed, resulting in the decline of anti-theft effect.
[0006] In order to solve the above technical problems, the utility model provides a special fastener for anti-theft screw, which comprises a screw and an anti-theft fastening part, the screw comprises a threaded rod body and a screw head, the outer side of the screw head is a hexagonal edge, the anti-theft fastening part comprises a cylindrical part and a hemispherical part, a fixing groove is formed in the hemispherical part, a locking block is fixedly connected in the fixing groove, a second butt joint block is arranged on the top of the screw head, a limiting opening is formed in the outer side of the second butt joint block, and the locking block corresponds to the positions of the second butt joint block and the limiting opening.
[0007] Preferably, a first butt joint is formed in the hexagonal edge, a first hexagonal groove is formed in the middle of the cylindrical part, a second hexagonal groove is formed in the upper part of the first hexagonal groove, a plurality of soft pads are fixedly connected in the second hexagonal groove, and a first butt joint block is fixedly connected on the soft pad.
[0008] Preferably, the first butt joint comprises an arc-shaped opening and a rectangular opening, the first butt joint block comprises an arc-shaped block and a rectangular block, the arc-shaped block corresponds to the arc-shaped opening, and the rectangular block corresponds to the rectangular opening.
[0009] Preferably, the locking block comprises a locking block body and an L-shaped locking rod, a second pair of interfaces are arranged in the middle of the locking block body, a plurality of groups of movable grooves are arranged on the inner side of the second pair of interfaces, a rotating shaft is fixedly connected to the L-shaped locking rod, the rotating shaft is rotationally connected with the movable grooves, a contact end is arranged at one end of the L-shaped locking rod close to the bottom of the second pair of interfaces, and the other end of the L-shaped locking rod close to the bottom of the hemispherical part is a locking end, and the size of the locking end corresponds to the limiting port.
[0010] Preferably, a positioning groove is arranged at the top of the second pair of clamping blocks, and a positioning column is fixedly connected to the locking block and corresponds in shape and position to the positioning groove.
[0011] Preferably, a metal gasket and a rubber sealing gasket are sleeved on the threaded rod body, the metal gasket is located on the side close to the screw head, and the rubber sealing gasket is located below the metal gasket and has a size larger than that of the metal gasket.
[0012] Compared with the related art, the special fastener for anti-theft screw has the following advantages
[0013] Beneficial effects:
[0014] The special fastener for anti-theft screw provided by the utility model locks the cylindrical part and the screw head by the first clamping block and the first interface, prevents the separation of the cylindrical part and the screw head, locks the second clamping block in the second interface by the L-shaped locking rod, the contact end and the locking end, limits the hemispherical part, double-locks to prevent the anti-theft fastening part from separating from the screw head, and the smooth appearance of the anti-theft fastening part also ensures the anti-theft performance. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 A structure schematic view of a preferred embodiment of the special fastener for anti-theft screw provided by the utility model;
[0016] Figure 2 A structure schematic view of the special fastener for anti-theft screw after removing the anti-theft fastening part in the utility model;
[0017] Figure 3 A structure schematic view of the cylindrical part and the first clamping block in the utility model;
[0018] Figure 4 A structure schematic view of the hemispherical part and the locking block in the utility model;
[0019] Figure 5 An internal structure schematic view of the locking block in the utility model.
[0020] The figure mark: 1, threaded rod body, 2, screw head, 3, hexagonal edge, 4, first interface, 41, arc-shaped mouth, 42, rectangular mouth, 5, anti-theft fastening part, 51, cylindrical part, 52, hemispherical part, 6, first hexagonal groove, 7, second hexagonal groove, 8, soft pad, 9, first interface block, 91, arc-shaped block, 92, rectangular block, 10, fixing groove, 11, locking block, 111, locking block body, 112, second interface, 113, movable groove, 114, L-shaped locking rod, 115, rotating shaft, 116, contact end, 117, locking end, 12, second interface block, 13, limiting mouth, 14, positioning groove, 15, positioning column, 16, metal gasket, 17, rubber sealing gasket. DETAILED DESCRIPTION
[0021] The utility model will be further explained below in combination with the drawings and embodiments.
[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 And Figure 5 Among them, Figure 1 It is a preferred embodiment structure diagram of the anti-theft screw special fastener provided by the utility model;
[0023] Figure 2 It is the structure diagram after removing the anti-theft fastening part in the utility model;
[0024] Figure 3 It is the structure diagram of cylindrical part and first interface block in the utility model;
[0025] Figure 4 It is the structure diagram of hemispherical part and locking block in the utility model;
[0026] Figure 5 It is the internal structure diagram of locking block in the utility model.
[0027] An anti-theft screw special fastener includes: screw and anti-theft fastening part 5, the screw includes threaded rod body 1 and screw head 2, the outer side of the screw head 2 is hexagonal edge 3, the anti-theft fastening part 5 includes cylindrical part 51 and hemispherical part 52, the fixed groove 10 is formed on the hemispherical part 52, the locking block 11 is fixedly connected in the fixed groove 10, the top of the screw head 2 is provided with second interface block 12, the outer side of the second interface block 12 is provided with limiting mouth 13, and the locking block 11 corresponds to the position of second interface block 12 and limiting mouth 13.
[0028] First, screw into the corresponding mounting hole, then the anti-theft fastening part 5 lower part of the cylindrical part 51 aligns with the screw head 2, it is sleeved on the screw head 2, press down, until the second interface block 12 and the locking block 11 inside the hemispherical part 52 are locked with each other, the installation of anti-theft fastening part 5 is completed.
[0029] The first interface 4 is arranged on the hexagonal edge 3, the first hexagonal groove 6 is arranged in the middle of the cylindrical part 51, the second hexagonal groove 7 is arranged in the upper part of the first hexagonal groove 6, a plurality of soft pads 8 are fixedly connected in the second hexagonal groove 7, and the first interface block 9 is fixedly connected on the soft pad 8.
[0030] In the process of pressing down the cylindrical part 51, because the first interface block 9 is connected on the soft pad 8, the first interface block 9 is extruded to the second hexagonal groove 7 by the hexagonal edge 3, when the height of the first interface block 9 drops to the first interface 4, the first interface block 9 rebounds and enters the first interface 4, and the cylindrical part 51 is clamped.
[0031] The first interface 4 includes the arc-shaped mouth 41 and the rectangular mouth 42, the first interface block 9 includes the arc-shaped block 91 and the rectangular block 92, the arc-shaped block 91 corresponds to the arc-shaped mouth 41, and the rectangular block 92 corresponds to the rectangular mouth 42.
[0032] When the first interface block 9 descends, the arc-shaped block 91 first contacts the hexagonal edge 3, so that the movement process of the soft pad 8 and the first interface block 9 is more smooth, when the first interface block 9 enters the first interface 4, the rectangular block 92 corresponds to the rectangular mouth 42, the first interface block 9 is locked with the first interface 4, and the cylindrical part 51 is prevented from being separated.
[0033] The locking block 11 includes the locking block body 111 and the L-shaped locking rod 114, the middle of the locking block body 111 is provided with the second interface 112, a plurality of groups of movable grooves 113 are arranged on the inner side of the second interface 112, the rotating shaft 115 is fixedly connected on the L-shaped locking rod 114, the rotating shaft 115 is rotatably connected with the movable groove 113, the end, close to the bottom of the second interface 112, of the L-shaped locking rod 114 is provided with the contact end 116, one end, close to the bottom of the hemispherical part 52, of the L-shaped locking rod 114 is the locking end 117, and the size of the locking end 117 corresponds to the limiting mouth 13.
[0034] The semispherical part 52 does not hinder the second docking block 12 during the pressing process because the locking end 117 is inside the movable slot 113 at this time, and when the second docking block 12 moves to the bottom of the second docking port 112, the second docking block 12 extrudes the contact end 116 outside the movable slot 113, so that the L-shaped locking rod 114 rotates around the rotating shaft 115 until the locking end 117 is inserted into the limiting opening 13, thereby locking the second docking block 12 and limiting the semispherical part 52; further, the contact end 116 is made of a metal with a greater density than the locking end 117, so that the weight of the contact end 116 is much greater than that of the locking end 117, or a spring is connected between the contact end 116 and the movable slot 113, so that the contact end 116 always remains outside the movable slot 113 before the second docking block 12 enters, thereby avoiding that the locking end 117 hinders the second docking block 12 from entering the second docking port 112.
[0035] The top of the second docking block 12 is provided with a positioning slot 14, and the locking block 11 is fixedly connected with a positioning column 15, and the positioning column 15 corresponds to the shape and position of the positioning slot 14.
[0036] The positioning column 15 and the positioning slot 14 are used for positioning the locking block 11 and the second docking block 12 during installation, so as to prevent deviation.
[0037] The threaded rod body 1 is sleeved with a metal gasket 16 and a rubber sealing gasket 17, the metal gasket 16 is located on the side close to the screw head 2, and the rubber sealing gasket 17 is located below the metal gasket 16 and has a size greater than that of the metal gasket 16.
[0038] After the screw is tightened, the metal gasket 16 is in contact with the lower part of the screw head 2, and at the same time, the rubber sealing gasket 17 below is extruded, and the rubber sealing gasket 17 plays a role in dispersing pressure, enhancing sealing and buffering performance.
[0039] The working principle of the special fastener for the anti-theft screw provided by the utility model is as follows:
[0040] First, the screw is screwed into the corresponding mounting hole, and then the cylindrical part 51 at the lower part of the anti-theft fastening part 5 is aligned with the screw head 2, and is sleeved on the screw head 2, and is pressed downward until the locking block 11 inside the second docking block 12 and the semispherical part 52 are locked with each other, and the installation of the anti-theft fastening part 5 is completed.
[0041] Compared with the related art, the special fastener for the anti-theft screw has the following advantages
[0042] Beneficial effects:
[0043] The cylindrical part 51 is locked with the first docking block 9 and the first docking surface 4 to prevent it from being separated; the second docking block 12 is locked in the second docking surface 112 through the L-shaped locking rod 114, the contact end 116 and the locking end 117 to limit the hemispherical part 52, and the double locking prevents the anti-theft fastening part 5 from being separated from the screw head 2, and the smooth appearance of the anti-theft fastening part 5 also ensures the anti-theft performance.
[0044] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.
Claims
1. A special fastener for anti-theft screws, characterized in that: include: A screw and an anti-theft fastening part, the screw includes a threaded rod and a screw head, the outer side of the screw head is a hexagonal edge, the anti-theft fastening part includes a cylindrical part and a hemispherical part, the hemispherical part is provided with a fixing groove, a locking block is fixedly connected in the fixing groove, a second docking block is provided on the top of the screw head, a limiting opening is provided on the outer side of the second docking block, and the locking block corresponds to the position of the second docking block and the limiting opening.
2. The special fastener for anti-theft screws according to claim 1, characterized in that: A first docking interface is provided on the hexagonal edge, a first hexagonal groove is provided in the middle of the cylindrical portion, a second hexagonal groove is provided on the upper portion of the first hexagonal groove, a plurality of soft pads are fixedly connected in the second hexagonal groove, and a first docking block is fixedly connected to the soft pads.
3. The special fastener for anti-theft screws according to claim 2, characterized in that: The first docking port includes an arc-shaped port and a rectangular port, and the first docking card block includes an arc-shaped card block and a rectangular card block. The arc-shaped card block corresponds to the arc-shaped port, and the rectangular card block corresponds to the rectangular port.
4. The special fastener for anti-theft screws according to claim 1, characterized in that: The locking block includes a locking block body and an L-shaped locking rod, a second docking interface is provided in the middle of the locking block body, a plurality of movable grooves are provided on the inner side of the second docking interface, a rotating shaft is fixedly connected to the L-shaped locking rod, and the rotating shaft is rotatably connected to the movable groove, a contact end is provided at one end of the L-shaped locking rod close to the bottom of the second docking interface, and an end of the L-shaped locking rod close to the bottom of the hemispherical part is a locking end, and the size of the locking end corresponds to the limit opening.
5. The special fastener for anti-theft screws according to claim 1, characterized in that: A positioning groove is formed on the top of the second docking block, and a positioning column is fixedly connected to the locking block. The shape and position of the positioning column correspond to those of the positioning groove.
6. The special fastener for anti-theft screws according to claim 1, characterized in that: The threaded rod body is sleeved with a metal gasket and a rubber sealing gasket, wherein the metal gasket is located on a side close to the screw head, and the rubber sealing gasket is located below the metal gasket and is larger in size than the metal gasket.