Anti-theft screw and elastic structure
By setting up multiple independent anti-theft slots on the nuts of the anti-theft screws, the problem that existing anti-theft screws are easily disassembled is solved, and the safety of tightening and anti-theft effect are improved.
Patent Information
- Application Number
- CN202421182116.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing anti-theft screws are easily unbuttoned after being applied by a single-shaped screwdriver, and the anti-theft effect is not outstanding and the safety is low.
An anti-theft screw is designed, including a screw, a nut and an anti-theft bump. The anti-theft bump is arranged at intervals on the nut to form multiple independent anti-theft grooves. The screwdriver cannot connect multiple anti-theft grooves in a single structure to loosen the screws.
Through the independent anti-theft groove structure, the tightening safety of the anti-theft screws is improved to prevent unauthorized disassembly and theft.
Smart Images
Figure CN222863838U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screws, in particular to an anti-theft screw and a loose and tight structure. Background Art
[0002] Anti-theft screws, also known as anti-dismantling screws or security screws, are special screws designed to increase the difficulty of disassembly to prevent unauthorized access, theft or tampering. They are widely used in public facilities, electronic products (such as mobile phones, computers), outdoor equipment, billboards, CCTV camera installation, door and window security reinforcement and other fields to prevent illegal intrusion or theft. Although some existing anti-theft screws have special structures, they can be loosened by applying force to the anti-theft screws with a flat-blade screwdriver. The anti-theft effect is not outstanding and the security is low. Utility Model Content
[0003] The main purpose of the utility model is to provide an anti-theft screw and a loosening structure, which is intended to prevent the screw from being easily loosened and improve the safety of fastening.
[0004] To achieve the above purpose, the anti-theft screw proposed by the utility model includes:
[0005] A screw having an external thread arranged on its outer circumference;
[0006] a nut fixedly connected to the end of the screw; and
[0007] An anti-theft protrusion is arranged at one end of the nut away from the screw rod. A plurality of anti-theft protrusions are arranged at intervals along the circumference of the nut to form a plurality of anti-theft grooves, and the ends of the anti-theft protrusions close to the axis of the nut are connected to each other to make the anti-theft grooves independent.
[0008] In one embodiment, one end of the anti-theft protrusion away from the axis of the nut extends to the outer periphery of the nut, and two adjacent anti-theft protrusions are connected to each other at one end away from the axis of the nut.
[0009] In one embodiment, the anti-theft protrusion has a locking surface and a limiting surface, and the locking surface of one of the anti-theft protrusions, the limiting surface of an adjacent anti-theft protrusion and the surface of the nut away from the screw rod form the anti-theft groove.
[0010] In one embodiment, the locking surface is configured as a plane, and the limiting surface is configured as a first arc surface.
[0011] In one embodiment, a side of the anti-theft groove close to the outer periphery of the nut is consistent with the curvature of the outer periphery of the nut.
[0012] In one embodiment, the number of the anti-theft protrusions and the number of the anti-theft grooves are both three, and the angle between two adjacent anti-theft protrusions is 120°.
[0013] In one embodiment, the edges of the anti-theft protrusion are provided with rounded corners.
[0014] The utility model also provides a loosening and tightening structure for tightening any of the above-mentioned anti-theft screws, the loosening and tightening structure comprising:
[0015] Tighten the rod;
[0016] A driving protrusion is arranged at the end of the tightening rod, a plurality of the driving protrusions are arranged, and the plurality of driving protrusions are arranged at intervals along the circumference of the tightening rod, and each of the driving protrusions corresponds to one of the anti-theft grooves.
[0017] In one embodiment, one side of the driving protrusion is a flat surface, and the other side is a second curved surface.
[0018] In one embodiment, the number of the driving protrusions is set to three.
[0019] In the technical solution of the utility model, the anti-theft screw includes a screw rod and a nut, the nut is fixedly connected to one end of the screw rod, a plurality of anti-theft protrusions are arranged at intervals on the nut, anti-theft grooves are formed between adjacent anti-theft protrusions, one end of the anti-theft protrusion close to the axis is connected to the end of the adjacent anti-theft protrusion close to the axis, so that each anti-theft groove cannot be connected to each other, that is, each anti-theft groove is in an independent state, and an external thread is arranged on the circumference of the screw rod. When it is necessary to tighten with the anti-theft screw, the anti-theft screw is threadedly connected to the connected part, and the anti-theft screw is tightened by cooperating with the anti-theft groove through a specific screwdriver. Among them, since the anti-theft screws are in a disconnected state, the screwdriver cooperating with the anti-theft groove cannot adopt a straight structure to connect multiple anti-theft grooves to loosen the anti-theft screw, which is inconvenient to disassemble, thereby improving the security of fastening. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] 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 the structures shown in these drawings without paying creative work.
[0021] Figure 1 A schematic structural diagram of an embodiment of the anti-theft screw provided by the utility model;
[0022] Figure 2 A schematic top view of an embodiment of the anti-theft screw provided by the utility model;
[0023] Figure 3 A front view schematic diagram of another embodiment of the anti-theft screw provided by the utility model;
[0024] Figure 4 This is a structural schematic diagram of an embodiment of the elastic structure provided by the utility model.
[0025] Description of Figure Numbers:
[0026] 10. Screw;
[0027] 20. Nut;
[0028] 30. Anti-theft protrusion; 31. Anti-theft groove; 32. Locking surface; 33. Limiting surface; 34. Installation protrusion;
[0029] 40. Elastic and tight structure; 41. Tightening rod; 42. Driving protrusion.
[0030] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to 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 the embodiments. 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.
[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0034] Anti-theft screws, also known as anti-dismantling screws or security screws, are special screws designed to increase the difficulty of disassembly to prevent unauthorized access, theft or tampering. They are widely used in public facilities, electronic products (such as mobile phones, computers), outdoor equipment, billboards, CCTV camera installation, door and window security reinforcement and other fields to prevent illegal intrusion or theft. Although some existing anti-theft screws have special structures, they can be loosened by applying force to the anti-theft screws with a flat-blade screwdriver. The anti-theft effect is not outstanding and the security is low.
[0035] The utility model provides an anti-theft screw and a loosening and tightening structure.
[0036] See also Figure 1 , Figure 2 and Figure 3 In one embodiment of the utility model, the anti-theft screw comprises:
[0037] The screw 10 has an external thread on its outer circumference;
[0038] A nut 20 fixedly connected to the end of the screw rod 10; and
[0039] The anti-theft protrusion 30 is arranged at one end of the nut 20 away from the screw rod 10. A plurality of anti-theft protrusions 30 are arranged at intervals along the circumference of the nut 20 to form a plurality of anti-theft grooves 31, and the ends of the anti-theft protrusions 30 close to the axis of the nut 20 are connected to each other to make the anti-theft grooves 31 independent.
[0040] In the technical solution of the utility model, Figure 1As shown, the anti-theft screw includes a screw rod 10 and a nut 20, the nut 20 is fixedly connected to one end of the screw rod 10, a plurality of anti-theft protrusions 30 are arranged at intervals on the nut 20, and anti-theft grooves 31 are formed between adjacent anti-theft protrusions 30, and one end of the anti-theft protrusion 30 close to the axis is connected to the other end of the adjacent anti-theft protrusion 30 close to the axis, so that each anti-theft groove 31 cannot be connected to each other, that is, each anti-theft groove 31 is in an independent state, and an external thread is arranged on the circumference of the screw rod 10. When it is necessary to fasten with the anti-theft screw, the anti-theft screw is threadedly connected to the connected part, and a specific screwdriver is used to cooperate with the anti-theft groove 31 to tighten the anti-theft screw. Among them, since the anti-theft screws are in a disconnected state, the screwdriver cooperating with the anti-theft groove 31 cannot use a straight structure to connect multiple anti-theft grooves 31 to loosen the anti-theft screw, which is inconvenient to disassemble, thereby improving the security of fastening.
[0041] In detail, the anti-theft screw can be configured as a self-tapping screw, that is, the end of the screw rod 10 away from the nut 20 is sharp, that is, there is no need to drill a hole in the material in advance when screwing into the material. The anti-theft screw can also be a bolt, used in conjunction with a nut with an internal thread. In addition, the nut 20 is coaxially arranged with the screw rod 10, and the cross-section of the nut 20 can be circular or square, etc. Considering the aesthetics, a circular shape is usually adopted, but it is not limited to a circular shape. The anti-theft protrusions 30 are arranged on the nut 20 at intervals, and two adjacent anti-theft protrusions 30 form an anti-theft groove 31. The anti-theft screw is tightened and loosened through a specific tensioning mechanism in cooperation with the anti-theft groove 31, and since each anti-theft groove 31 is in an independent state and not connected in the middle, the corresponding tensioning mechanism cannot adopt a straight-line type, and the anti-theft effect is good.
[0042] In the embodiment of the present invention, one end of the anti-theft protrusion 30 away from the axis of the nut 20 extends to the outer periphery of the nut 20, and one end of two adjacent anti-theft protrusions 30 away from the axis of the nut 20 is connected to each other.
[0043] Please refer to Figure 2 and Figure 3 The anti-theft protrusion 30 is arranged on the nut 20 and extends from the axis of the nut 20 to the periphery of the nut 20. The side of two adjacent anti-theft protrusions 30 close to the periphery of the nut 20 is connected by setting a mounting protrusion 34, so that the anti-theft groove 31 is blocked by the mounting protrusion 34 and cannot extend to the periphery of the nut 20, and thus a specific tightening mechanism is required to tighten or loosen the anti-theft screw, which further improves the security of the locking; in addition, the anti-theft protrusion 30 and the mounting protrusion 34 are arranged integrally, which improves the aesthetics of the structure.
[0044] In an embodiment of the utility model, the anti-theft protrusion 30 has a locking surface 32 and a limiting surface 33, and the locking surface 32 of one anti-theft protrusion 30, the limiting surface 33 of an adjacent anti-theft protrusion 30 and the surface of the nut 20 away from the screw rod 10 form an anti-theft groove 31.
[0045] Specifically, please refer to Figure 2 and Figure 3 The two opposing surfaces of the anti-theft protrusion 30 are a locking surface 32 and a limiting surface 33, that is, the two sides of each anti-theft groove 31 are respectively composed of a locking surface 32 of an anti-theft protrusion 30 and a limiting surface 33 of an adjacent anti-theft protrusion 30. In one embodiment, rotating the anti-theft screw clockwise is tightening, that is, from the user's perspective, the locking surface 32 is arranged on the clockwise side of the anti-theft groove 31, and the limiting surface 33 is arranged on the counterclockwise side of the anti-theft groove 31. When the anti-theft screw needs to be tightened, the tensioning mechanism contacts the locking surfaces 32 of each limiting groove to tighten the anti-theft screw. When loosening the anti-theft screw, the tensioning mechanism contacts the limiting surface 33 and applies force to loosen the anti-theft bolt. It can be understood that in another embodiment, rotating the anti-theft screw counterclockwise is tightening, that is, from the user's perspective, the locking surface 32 is arranged on the counterclockwise side of the anti-theft groove 31, and the limiting surface 33 is arranged on the clockwise side of the anti-theft groove 31.
[0046] In the embodiment of the present utility model, the locking surface 32 is configured as a plane, and the limiting surface 33 is configured as a first arc surface.
[0047] Specifically, by setting the locking surface 32 and the limiting surface 33 to different shapes in order to increase the difficulty of manufacturing a tensioning mechanism compatible with them, the locking surface 32 is configured as a plane for easy tightening, and the limiting surface 33 is configured as a first arc surface, that is, when a straight surface structure is used to cooperate with the limiting surface 33, it is impossible to closely contact the limiting surface 33, and it is easy to slip out of the anti-theft groove 31, making it inconvenient to apply force to unscrew the anti-theft screw, which also increases the difficulty of loosening the anti-theft screw and improves the safety of fastening the anti-theft screw.
[0048] In the embodiment of the present invention, the side of the anti-theft groove 31 close to the outer periphery of the nut 20 has the same curvature as the outer periphery of the nut 20 .
[0049] Specifically, please refer to Figure 2 The two opposite sides of the anti-theft groove 31 are respectively a locking surface 32 and a limiting surface 33, and the side close to the outer periphery of the nut 20 is limited by a mounting protrusion 34. The mounting protrusion 34 is consistent with the curvature of the outer periphery of the nut 20, which increases the difficulty of manufacturing the loosening and tightening mechanism. A specific structure must be used to loosen the anti-theft screw, which also improves the aesthetics of the anti-theft screw.
[0050] In the embodiment of the present invention, the number of the anti-theft protrusions 30 and the number of the anti-theft grooves 31 are both three, and the angle between two adjacent anti-theft protrusions 30 is 120°.
[0051] Specifically, please refer to Figure 2There are three anti-theft protrusions 30, and the three anti-theft protrusions 30 are arranged on the nut 20 at intervals along the circumferential direction. An anti-theft groove 31 is formed between any two adjacent anti-theft protrusions 30, that is, the number of anti-theft grooves 31 is also three, and the angle between two adjacent locking surfaces 32 is 120°. Correspondingly, the angle between two adjacent limiting surfaces 33 is also 120°, so that each anti-theft groove 31 is evenly stressed and has a high aesthetic appearance.
[0052] In the embodiment of the present utility model, the edges of the anti-theft protrusion 30 are provided with rounded corners.
[0053] Specifically, please refer to Figure 1 and Figure 3 The tops of the two opposite sides of the anti-theft protrusion 30, namely the locking surface 32 and the limiting surface 33, are both set to rounded corners, which not only improves the aesthetics, but also is not easy to be stressed and difficult to be disassembled, thereby improving the security of fastening.
[0054] The utility model also provides a loose structure 40, please refer to Figure 4 The tensioning structure 40 tightens any of the above-mentioned anti-theft screws. The tensioning structure 40 includes a tightening rod 41 and a driving protrusion 42. The driving protrusion 42 is arranged at the end of the tightening rod 41. A plurality of driving protrusions 42 are arranged, and the plurality of driving protrusions 42 are arranged at intervals along the circumference of the tightening rod 41. Each driving protrusion 42 corresponds to an anti-theft groove 31. The specific structure of the anti-theft screw refers to the above-mentioned embodiment, and the driving protrusion 42 of the tensioning structure 40 is arranged corresponding to the anti-theft groove 31, and is used to cooperate with the anti-theft groove 31 to tighten or loosen the anti-theft screw.
[0055] In the embodiment of the present utility model, one side of the driving protrusion 42 is a flat surface, and the other side is a second arc surface.
[0056] Specifically, the two opposite sides of the driving protrusion 42 are a plane and a second arc surface, respectively. The plane corresponds to the locking surface 32, and the second arc surface corresponds to the limiting surface 33. The curvature of the second arc surface is consistent with that of the first arc surface, so as to better fit the limiting surface 33 and facilitate the application of force to loosen the anti-theft screw.
[0057] In the embodiment of the utility model, the number of the driving protrusions 42 is set to three, and the three driving protrusions 42 are set corresponding to the three anti-theft grooves 31, which is convenient for tightening or loosening the anti-theft screws in cooperation with the locking surface 32 or the limiting surface 33, and the force is evenly applied.
[0058] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. An anti-theft screw, characterized in that: include: A screw having an external thread arranged on its outer circumference; A nut fixedly connected to the end of the screw; as well as An anti-theft protrusion is arranged at one end of the nut away from the screw rod. A plurality of anti-theft protrusions are arranged at intervals along the circumference of the nut to form a plurality of anti-theft grooves, and the ends of the anti-theft protrusions close to the axis of the nut are connected to each other to make the anti-theft grooves independent.
2. The anti-theft screw according to claim 1, characterized in that: One end of the anti-theft protrusion away from the axis of the nut extends to the outer periphery of the nut, and one end of two adjacent anti-theft protrusions away from the axis of the nut is connected to each other.
3. The anti-theft screw according to claim 2, characterized in that: The anti-theft protrusion has a locking surface and a limiting surface, and the locking surface of one of the anti-theft protrusions, the limiting surface of an adjacent anti-theft protrusion and the surface of the nut away from the screw rod form the anti-theft groove.
4. The anti-theft screw according to claim 3, characterized in that: The locking surface is configured as a plane, and the limiting surface is configured as a first arc surface.
5. The anti-theft screw according to claim 2, characterized in that: The side of the anti-theft groove close to the outer periphery of the nut is consistent with the curvature of the outer periphery of the nut.
6. The anti-theft screw according to claim 5, characterized in that: The number of the anti-theft protrusions and the number of the anti-theft grooves are both three, and the angle between two adjacent anti-theft protrusions is 120°.
7. The anti-theft screw according to claim 6, characterized in that: The edges of the anti-theft protrusions are provided with rounded corners.
8. A tensioning structure for tightening the anti-theft screw according to any one of claims 1 to 7, characterized in that: The elastic structure comprises: Tighten the rod; A driving protrusion is arranged at the end of the tightening rod, a plurality of the driving protrusions are arranged, and the plurality of driving protrusions are arranged at intervals along the circumference of the tightening rod, and each of the driving protrusions corresponds to one of the anti-theft grooves.
9. The elastic structure according to claim 8, characterized in that: One side of the driving protrusion is a flat surface, and the other side is a second curved surface.
10. The elastic structure according to claim 9, characterized in that: The number of the driving protrusions is set to three.