Anti-disassembly screw structure

Abstract

The utility model provides an anti-disassembly screw structure, which relates to the technical field of screws, and comprises a screw rod, the top of the screw rod is fixedly connected with a connector, the top of the connector is provided with a first rectangular groove, the outer surface of the connector is provided with a connecting ring, and the top of the connecting ring is fixedly connected with a screw head. A cross-shaped groove is formed in the top of the nail head, and a second rectangular groove is formed in the center of the inner bottom of the cross-shaped groove. According to the screw, when a worker maintains equipment and needs to detach the screw body, a special rectangular column can penetrate through the second rectangular groove in the bottom in the cross groove and enter the first rectangular groove in the connector, and the screw body can be detached due to the fact that the first rectangular groove and the rectangular column cannot rotate relative to each other; therefore, the connector and the nail head can be converted into a synchronous rotating state, the nail rod can be dismounted by rotating the nail head anticlockwise, the whole structure is simple, the anti-dismounting function is achieved, and the problem that dismounting is difficult when needed is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, in particular to an anti-disassembly screw structure. Background Art

[0002] A screw is a tool that uses the physical and mathematical principles of the circular rotation of an object's inclined surface and the force of friction to gradually fasten objects and machine parts. Screw is a general term for fasteners and a daily colloquialism. Screw is an indispensable industrial necessity in daily life, such as the tiny screws used in cameras, glasses, clocks, electronics, etc.

[0003] In the prior art, such as Chinese patent publication number CN203335601U, a magnetic anti-disassembly screw is disclosed, including a separate screw body and a screw head, the screw body and the screw head are made of magnetic material, one end of the screw body that matches the screw head is provided with a section of fastening external thread for fastening, one end of the screw head that matches the screw body is provided with a ring with an inner diameter matching the outer diameter of the screw body, and a fastening internal thread corresponding to the fastening external thread is provided in the ring, and the tightening direction of the fastening internal thread after matching with the fastening external thread is the same as the tightening direction of the screw body; the other end of the screw head is provided with an opening for tightening. The magnetic anti-disassembly screw of the utility model is not easy to be disassembled after installation, and the design and processing difficulty are low. After installation, it is neat and beautiful and will not cause waste of resources and environmental pollution. At the same time, it is easy to install and not easy to lose.

[0004] Although the screws in the above patent have the function of anti-disassembly, in actual use, when the equipment needs to be repaired, the user is also unable to remove it without damaging the anti-disassembly screws, and there are certain limitations in use. Therefore, in response to the above problems, we propose a new anti-disassembly screw structure. Summary of the invention

[0005] The purpose of the utility model is to solve the problem in the prior art that when equipment needs to be repaired, users are unable to remove the anti-disassembly screws without damaging them, which results in certain limitations in use, and to propose an anti-disassembly screw structure.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an anti-disassembly screw structure, including a nail rod, a connecting head is fixedly connected to the top of the nail rod, a first rectangular groove is opened on the top of the connecting head, a connecting ring is provided on the outer surface of the connecting head, a nail head is fixedly connected to the top of the connecting ring, a cross groove is opened on the top of the nail head, a second rectangular groove is opened at the center of the inner bottom of the cross groove, a rectangular column is inserted between the inner surface walls of the second rectangular groove and the first rectangular groove, and a cross thin sheet is fixedly connected to the top of the rectangular column.

[0007] Preferably, the bottom of the cross sheet and the inner bottom of the cross groove fit together and have the same size, and the inner surface wall of the connecting ring is provided with an external thread.

[0008] Preferably, the outer surface of the connector is provided with an internal thread, and the internal thread and the external thread have the same spiral direction.

[0009] Preferably, the outer surface of the nail rod is provided with a spiral pattern, and the spiral direction of the spiral pattern is consistent with that of the external thread.

[0010] Preferably, a pointed head is fixedly connected to the bottom end of the nail rod.

[0011] Preferably, a contraction groove is provided on the outer surface of the nail rod near the bottom, a rubber ring is fixed between the inner surface walls of the contraction groove, and the bottom of the rubber ring is conical.

[0012] Preferably, a pressure ring is fixedly connected to the outer surface of the nail rod near the top.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, when the staff needs to disassemble the screw body for maintenance of the equipment, they can pass the special rectangular column through the second rectangular groove at the bottom of the cross groove and enter the first rectangular groove inside the connecting head. Since the first rectangular groove and the rectangular column cannot rotate with each other, the connecting head and the nail head will be converted into a synchronous rotation state. At this time, the nail rod can be removed by rotating the nail head counterclockwise. The overall structure is simple, which not only has the anti-disassembly function, but also solves the problem of difficult disassembly when needed.

[0015] 2. In the utility model, a shrinkage groove for installing the rubber ring is provided on the surface of the nail rod, so that the rubber ring can follow the nail rod into the interior of the object when the nail rod is installed. After the rubber ring enters the interior of the object, it will be compressed and deformed by the extrusion force, thereby improving the firmness between the nail rod and the installation hole, thereby increasing the difficulty of forcibly removing the nail rod without special rectangular column tools, thereby improving the anti-dismantling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of an anti-disassembly screw structure is proposed for the utility model;

[0017] Figure 2 A cross-sectional view of an anti-disassembly screw structure is proposed for the utility model;

[0018] Figure 3 A schematic diagram of a nail rod structure of an anti-disassembly screw structure is provided for the utility model;

[0019] Figure 4The utility model provides a schematic diagram of a nail head structure of an anti-disassembly screw structure.

[0020] Legend: 1. Nail rod; 11. Spiral pattern; 12. Pointed head; 2. Shrinkage groove; 21. Rubber ring; 3. Connecting head; 31. First rectangular groove; 32. Internal thread; 33. Pressing ring; 4. Nail head; 41. Connecting ring; 42. External thread; 43. Second rectangular groove; 44. Cross groove; 5. Rectangular column; 51. Cross sheet. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides an anti-disassembly screw structure, including a nail rod 1, a connecting head 3 is fixedly connected to the top of the nail rod 1, a first rectangular groove 31 is opened on the top of the connecting head 3, a connecting ring 41 is arranged on the outer surface of the connecting head 3, a nail head 4 is fixedly connected to the top of the connecting ring 41, a cross groove 44 is opened on the top of the nail head 4, a second rectangular groove 43 is opened at the center of the inner bottom of the cross groove 44, a rectangular column 5 is inserted between the second rectangular groove 43 and the inner surface wall of the first rectangular groove 31, a cross sheet 51 is fixedly connected to the top of the rectangular column 5, the bottom of the cross sheet 51 and the inner bottom of the cross groove 44 are fitted and have the same size, an external thread 42 is arranged on the inner surface wall of the connecting ring 41, an internal thread 32 is arranged on the outer surface of the connecting head 3, the internal thread 32 and the external thread 42 have the same spiral direction, a spiral pattern 11 is arranged on the outer surface of the nail rod 1, the spiral pattern 11 and the external thread 42 have the same spiral direction, and a pointed head 12 is fixedly connected to the bottom end of the nail rod 1.

[0024] The effect achieved by the entire embodiment 1 is that the nail rod 1, the pointed head 12, the connecting head 3, the connecting ring 41 and the nail head 4 in the device constitute a screw body. When the screw body is in use, the screw body can be installed by rotating it clockwise with a cross screwdriver in conjunction with the cross slot 44. Moreover, when the screw body is disassembled in violation of regulations, the nail head 4 will be rotated counterclockwise. At this time, the connecting ring 41 and the connecting head 3 at the bottom of the nail head 4 will cause the nail head 4 to separate from the connecting head 3 when rotating counterclockwise under the action of the internal thread 32 and the external thread 42, so that the nail rod 1 is embedded in the inside of the device, thereby having a good anti-theft and anti-disassembly effect, and the staff can easily remove the nail head 4 from the device. When the screw body needs to be disassembled for maintenance, the special rectangular column 5 can be passed through the second rectangular groove 43 at the bottom of the cross groove 44 and enter the first rectangular groove 31 inside the connecting head 3. Since the first rectangular groove 31 and the rectangular column 5 cannot rotate with each other, the connecting head 3 and the nail head 4 will be converted into a synchronous rotation state. At this time, the nail head 4 can be rotated counterclockwise to remove the nail rod 1. The overall structure is simple, which not only has an anti-dismantling function, but also solves the problem of being difficult to disassemble when needed. The function of the pointed head 12 is to allow the screw body to be nailed into the surface of a non-porous object, so that it can rotate into the object in coordination with the spiral pattern 11 on the surface to complete the connection.

[0025] Embodiment 2, as Figure 1-Figure 4 As shown, a shrinkage groove 2 is provided on the outer surface of the nail rod 1 near the bottom, a rubber ring 21 is fixed between the inner surface walls of the shrinkage groove 2, the bottom of the rubber ring 21 is conical, and a pressure ring 33 is fixedly connected to the outer surface of the nail rod 1 near the top.

[0026] The effect achieved by the entire embodiment 2 is that, by opening a shrinkage groove 2 for installing the rubber ring 21 on the surface of the nail rod 1, the rubber ring 21 can follow the nail rod 1 into the interior of the object when installing the nail rod 1. After entering the interior of the object, the rubber ring 21 will be compressed and deformed by the extrusion force, thereby improving the firmness between the nail rod 1 and the installation hole, thereby increasing the difficulty of forcibly removing the nail rod 1 when there is no special rectangular column 5 tool, and improving the anti-dismantling effect. By setting the pressure ring 33, the contact area between the end of the nail rod 1 and the surface of the object is increased, thereby preventing the nail rod 1 from losing its connection effect after the nail head 4 and the connecting head 3 are illegally removed.

[0027] Working principle: When the screw body is in use, the installation of the screw body can be completed by rotating it clockwise with a cross screwdriver in conjunction with the cross slot 44. In addition, when the screw body is disassembled in violation of regulations, the nail head 4 will be rotated counterclockwise. At this time, the connecting ring 41 at the bottom of the nail head 4 and the connecting head 3 will cause the nail head 4 to be detached from the connecting head 3 when rotating counterclockwise under the action of the internal thread 32 and the external thread 42, so that the nail rod 1 is embedded in the inside of the equipment, thereby having a good anti-theft and anti-disassembly effect. When the staff needs to disassemble the screw body for maintenance of the equipment, they can pass the special rectangular column 5 through the second rectangular groove 43 at the bottom of the cross slot 44 and enter the first rectangular groove 3 inside the connecting head 3. 1, since the first rectangular groove 31 and the rectangular column 5 cannot rotate with each other, the connecting head 3 and the nail head 4 will be converted into a synchronously rotating state. At this time, the nail rod 1 can be removed by rotating the nail head 4 counterclockwise. The overall structure is simple, which not only has the anti-dismantling function, but also solves the problem of being difficult to disassemble when needed. By providing a shrinkage groove 2 for installing the rubber ring 21 on the surface of the nail rod 1, the rubber ring 21 can follow the nail rod 1 into the interior of the object when the nail rod 1 is installed. After the rubber ring 21 enters the interior of the object, it will be compressed and deformed by the extrusion force, thereby improving the firmness between the nail rod 1 and the installation hole, and then making it more difficult to forcibly remove the nail rod 1 when there is no special rectangular column 5 tool, thereby improving the anti-dismantling effect.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A disassembly-resistant screw structure, comprising a screw rod (1), characterized in that: The top of the nail rod (1) is fixedly connected to a connecting head (3), the top of the connecting head (3) is provided with a first rectangular groove (31), the outer surface of the connecting head (3) is provided with a connecting ring (41), the top of the connecting ring (41) is fixedly connected to a nail head (4), the top of the nail head (4) is provided with a cross groove (44), a second rectangular groove (43) is provided at the center of the inner bottom of the cross groove (44), a rectangular column (5) is inserted between the second rectangular groove (43) and the inner surface wall of the first rectangular groove (31), and the top of the rectangular column (5) is fixedly connected to a cross sheet (51).

2. The anti-disassembly screw structure according to claim 1, characterized in that: The bottom of the cross sheet (51) and the inner bottom of the cross groove (44) fit together and have the same size, and the inner surface wall of the connecting ring (41) is provided with an external thread (42).

3. The anti-disassembly screw structure according to claim 2, characterized in that: The outer surface of the connector (3) is provided with an internal thread (32), and the internal thread (32) and the external thread (42) have the same spiral direction.

4. The anti-disassembly screw structure according to claim 3, characterized in that: The outer surface of the nail rod (1) is provided with a spiral pattern (11), and the spiral direction of the spiral pattern (11) and the external thread (42) are consistent.

5. The anti-disassembly screw structure according to claim 4, characterized in that: A pointed head (12) is fixedly connected to the bottom end of the nail rod (1).

6. The anti-disassembly screw structure according to claim 5, characterized in that: A contraction groove (2) is provided on the outer surface of the nail rod (1) near the bottom, a rubber ring (21) is fixed between the inner surface walls of the contraction groove (2), and the bottom of the rubber ring (21) is arranged in a conical shape.

7. The anti-disassembly screw structure according to claim 6, characterized in that: A pressure ring (33) is fixedly connected to a position near the top of the outer surface of the nail rod (1).

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