Fastening screw capable of preventing disassembly
By designing a fastening screw with disc, nail post and tip to prevent disassembly, the rotation of the fastening block and the length of the nail post and tips is used to solve the problem that existing fastening screws may be accidentally removed, improving safety and stability.
Patent Information
- Application Number
- CN202420659823.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-02
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-04-02
AI Technical Summary
Existing fastening screws may be accidentally or maliciously disassembled in certain occasions, resulting in loosening, failure or accidental damage to the equipment, especially in areas such as machinery, cars and aircraft that require high safety.
A fastening screw that prevents disassembly is designed, including discs, nail posts and tips. The rotation of the fastening block drives the discs, nail posts and tips to rotate. The length of the nail posts and tips is much larger than the connecting rod and the locking force is much larger than the connecting rod segment to ensure that the fastening screws cannot be removed.
It effectively prevents the removal of the fastening screw, improves the safety of the fastening screw, and avoids the risk of loosening or accidental damage to the equipment.
Smart Images
Figure CN222558978U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fastening screws, in particular to a fastening screw capable of preventing disassembly. Background Art
[0002] A set screw is a fastener used to connect and fix two or more parts. It usually consists of a threaded rod and a nut. The nut is tightly fixed to the connected parts by rotating the threaded rod. The materials of the set screw usually include stainless steel, carbon steel, alloy steel, etc. to meet the needs of different working environments.
[0003] In the prior art, in some cases, if the fastening screws are accidentally or maliciously removed, the equipment may become loose, fail, or be accidentally damaged. For example, in fields such as mechanical equipment, automobiles, and airplanes that require high safety, the accidental removal of the fastening screws may cause serious accidents. Utility Model Content
[0004] The utility model mainly provides a fastening screw which can prevent the fastening screw from being disassembled.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fastening screw that prevents disassembly, comprising a disc, a nail column and a tip, one side of the disc is fixedly connected to one end of the nail column, the other end of the nail column is provided with a tip, the outer side of the nail column is provided with a first screw thread, the outer side of the tip is provided with a second screw thread, the other side of the disc is fixedly connected to a connecting rod, the outer side of the connecting rod is provided with a third screw thread, the third screw thread, the first screw thread and the second screw thread have the same rotation direction, a fastening block is provided on the other side of the disc, a threaded hole is provided in the middle of the fastening block, and the threaded hole is threadedly connected to the connecting rod; the fastening block is subjected to force through Rotate in one direction, at this time the threaded hole is tightened with the connecting rod through the third screw thread, when the fastening block and the disc are fitted, the fastening block continues to rotate, the fastening block drives the disc to rotate, and the disc drives the nail column and the tip to rotate in one direction, first the tip breaks through the carrier through the second screw thread, and then the nail column rotates into the carrier through the first screw thread. Since the length of the nail column and the tip is much longer than the connecting rod, the locking force of the nail column and the tip section is much greater than the connecting rod section. Therefore, when the fastening block rotates in the opposite direction, the fastening block will first disengage from the disc, and the threaded hole will rotate with the third screw thread, causing the fastening block to disengage from the connecting rod, while the disc, the nail column and the tip remain in the carrier to avoid being disassembled, thereby improving the safety of the fastening screw.
[0006] Preferably, the pitch of the connecting rod is equal to the pitch of the second screw thread, and the pitch of the first screw thread is half of the second screw thread; the pitch of the second screw thread is twice the pitch of the first screw thread, and the pitch of the connecting rod is the same as the pitch of the second screw thread, but because the length of the nail column and the tip is much larger than that of the connecting rod, the locking force of the nail column and the tip section is much greater than that of the connecting rod section, and when the fastening block rotates in the opposite direction, the fastening block will first separate from the connecting rod.
[0007] Preferably, the outer side of the fastening block is respectively fixedly connected with a first ear block and a second ear block, and the first ear block and the second ear block are located in the same straight line; the first ear block and the second ear block are stuck in the gap between fingers, and thus rotate to drive the fastening block to rotate.
[0008] Preferably, first inner arc grooves are provided on both sides of the first ear block, and second inner arc grooves are provided on both sides of the second ear block; the arc surface of the finger fits into the first inner arc groove of the first ear block or the second inner arc groove of the second ear block, making the finger more comfortable during force application.
[0009] Preferably, a hexagonal hole is provided in the middle of one side of the fastening block, and a first side groove and a second side groove are provided on the inner wall of the hexagonal hole; the fastening block can also be rotated by inserting a hexagonal wrench into the hexagonal hole.
[0010] Preferably, the first side groove and the second side groove are located on the same straight line; by inserting a flat-head wrench into the first side groove and the second side groove at the same time, the rotation of the fastening block can also be achieved.
[0011] Preferably, the disc, the nail column and the tip are integrally formed, and both ends of the fastening block are provided with chamfers; the disc, the nail column and the tip are integrally cast, the structure is more solid, and later tapping is also convenient.
[0012] Compared with the prior art, the advantages and positive effects of the utility model are:
[0013] 1. In the utility model, the fastening block is forced to rotate in one direction, and at this time the threaded hole is tightened with the connecting rod through the third thread. When the fastening block and the disc are fitted, the fastening block continues to rotate, and the fastening block drives the disc to rotate, and the disc drives the nail column and the tip to rotate in one direction. First, the tip breaks the carrier through the second thread, and then the nail column rotates into the carrier through the first thread. Since the length of the nail column and the tip is much longer than the connecting rod, the locking force of the nail column and the tip section is much greater than the connecting rod section. Therefore, when the fastening block rotates in the opposite direction, the fastening block will first disengage from the disc, and the threaded hole will rotate with the third thread, causing the fastening block to disengage from the connecting rod, while the disc, the nail column and the tip remain in the carrier to avoid being disassembled, thereby improving the safety of the fastening screw.
[0014] 2. In the utility model, the first ear block and the second ear block are stuck in the gap between fingers, thereby rotating, driving the fastening block to rotate. The fastening block can also be rotated by inserting a hexagonal wrench into the hexagonal hole. The fastening block can also be rotated by inserting a flat wrench into the first side groove and the second side groove at the same time. Various forms can drive the fastening block to rotate, which is more convenient for installation and improves the applicability of installation. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A three-dimensional structural schematic diagram of a fastening screw that prevents disassembly is provided for the utility model;
[0016] Figure 2 A schematic diagram of a three-dimensional structure of a fastening screw that is disassembled to prevent disassembly is provided for the utility model;
[0017] Figure 3 The utility model provides a schematic diagram of the internal plane structure of a fastening screw that is prevented from being disassembled.
[0018] Legend: 1. Disc; 2. Nail column; 3. Tip; 4. Fastening block; 5. First ear block; 6. First inner arc groove; 7. Chamfer; 8. First side groove; 9. Hexagonal hole; 10. Second side groove; 11. Second ear block; 12. Second inner arc groove; 13. Threaded hole; 14. Connecting rod; 15. First screw thread; 16. Second screw thread; 17. Third screw thread. DETAILED DESCRIPTION
[0019] 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.
[0020] 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.
[0021] See also Figure 1-Figure 3The utility model provides a technical solution: a fastening screw for preventing disassembly, comprising a disc 1, a nail column 2 and a tip 3, one side of the disc 1 is fixedly connected to one end of the nail column 2, the other end of the nail column 2 is provided with a tip 3, the outer side of the nail column 2 is provided with a first screw thread 15, the outer side of the tip 3 is provided with a second screw thread 16, the other side of the disc 1 is fixedly connected to a connecting rod 14, the outer side of the connecting rod 14 is provided with a third screw thread 17, the third screw thread 17, the first screw thread 15 and the second screw thread 16 have the same rotation direction, a fastening block 4 is provided on the other side of the disc 1, a threaded hole 13 is provided in the middle of the fastening block 4, and the threaded hole 13 is threadedly connected to the connecting rod 14; the fastening block 4 is rotated in one direction under force, and the threaded hole 13 passes through the third screw thread 17 is tightened with the connecting rod 14. When the fastening block 4 and the disc 1 are fitted, the fastening block 4 continues to rotate, and the fastening block 4 drives the disc 1 to rotate, and the disc 1 drives the nail column 2 and the tip 3 to rotate in one direction. First, the tip 3 breaks through the carrier through the second screw thread 16, and then the nail column 2 rotates into the carrier through the first screw thread 15. Since the lengths of the nail column 2 and the tip 3 are much longer than the connecting rod 14, the locking force of the nail column 2 and the tip 3 section is much greater than that of the connecting rod 14. Therefore, when the fastening block 4 rotates in the opposite direction, the fastening block 4 will first disengage from the disc 1, and the threaded hole 13 will rotate with the third screw thread 17, causing the fastening block 4 to disengage from the connecting rod 14, while the disc 1, the nail column 2 and the tip 3 remain in the carrier to avoid being disassembled, thereby improving the safety of the fastening screw.
[0022] like Figure 3 As shown, the pitch of the connecting rod 14 is equal to the pitch of the second screw thread 16, and the pitch of the first screw thread 15 is half of the thread of the second screw thread 16; the pitch of the second screw thread 16 is twice the pitch of the first screw thread 15, and the pitch of the connecting rod 14 is the same as the pitch of the second screw thread 16, but because the length of the nail column 2 and the tip 3 is much larger than that of the connecting rod 14, the locking force of the nail column 2 and the tip 3 section is much greater than that of the connecting rod 14 section, and when the fastening block 4 rotates in the opposite direction, the fastening block 4 will first separate from the connecting rod 14.
[0023] like Figure 1 As shown, the outer side of the fastening block 4 is fixedly connected with a first ear block 5 and a second ear block 11, respectively, and the first ear block 5 and the second ear block 11 are located in the same straight line; the first ear block 5 and the second ear block 11 are stuck in the gap between fingers, and thus rotate, driving the fastening block 4 to rotate.
[0024] like Figure 1 As shown, first inner arc grooves 6 are provided on both sides of the first ear block 5, and second inner arc grooves 12 are provided on both sides of the second ear block 11; the arc surface of the finger fits into the first inner arc groove 6 of the first ear block 5 or the second inner arc groove 12 of the second ear block 11, making the finger more comfortable during the force application process.
[0025] like Figure 1As shown, a hexagonal hole 9 is provided in the middle of one side of the fastening block 4, and a first side groove 8 and a second side groove 10 are provided on the inner wall of the hexagonal hole 9; the fastening block 4 can also be rotated by inserting a hexagonal wrench into the hexagonal hole 9.
[0026] like Figure 1 As shown, the first side groove 8 and the second side groove 10 are located on the same straight line; by inserting a flat-head wrench into the first side groove 8 and the second side groove 10 at the same time, the rotation of the fastening block 4 can also be achieved.
[0027] like Figure 1 As shown, the disc 1, the nail column 2 and the tip 3 are integrally formed, and chamfers 7 are provided at both ends of the fastening block 4; the disc 1, the nail column 2 and the tip 3 are integrally cast, the structure is more solid, and it is also convenient for tapping later.
[0028] The method of use and working principle of the device: When using the fastening screw to prevent disassembly, align the tip 3 horizontally with the position to be locked, and the fastening block 4 is forced to rotate in one direction. At this time, the threaded hole 13 is tightened with the connecting rod 14 through the third screw thread 17. When the fastening block 4 and the disc 1 are fitted, the fastening block 4 continues to rotate, and the fastening block 4 drives the disc 1 to rotate, and the disc 1 drives the nail column 2 and the tip 3 to rotate in one direction. First, the tip 3 breaks the carrier through the second screw thread 16, and then the nail column 2 passes through the first screw thread 16. The threaded hole 13 rotates with the third threaded tooth 17, causing the fastening block 4 to be separated from the connecting rod 14, while the disc 1, the nail column 2 and the tip 3 remain in the carrier to prevent them from being disassembled.
[0029] 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 fastening screw for preventing disassembly, comprising a disc (1), a nail column (2) and a tip (3), characterized in that: One side of the disc (1) is fixedly connected to one end of the nail column (2); the other end of the nail column (2) is provided with a tip (3); the outer side of the nail column (2) is provided with a first screw thread (15); the outer side of the tip (3) is provided with a second screw thread (16); the other side of the disc (1) is fixedly connected to a connecting rod (14); the outer side of the connecting rod (14) is provided with a third screw thread (17); the third screw thread (17), the first screw thread (15) and the second screw thread (16) have the same rotation direction; the other side of the disc (1) is provided with a fastening block (4); the middle part of the fastening block (4) is provided with a threaded hole (13); the threaded hole (13) is threadedly connected to the connecting rod (14).
2. The anti-disassembly fastening screw according to claim 1, characterized in that: The thread pitch of the connecting rod (14) is equal to the thread pitch of the second thread (16), and the thread pitch of the first thread (15) is half of the thread pitch of the second thread (16).
3. The anti-disassembly fastening screw according to claim 2, characterized in that: The outer side of the fastening block (4) is respectively fixedly connected with a first ear block (5) and a second ear block (11), and the first ear block (5) and the second ear block (11) are located in the same straight line.
4. The anti-disassembly fastening screw according to claim 3, characterized in that: Both sides of the first ear block (5) are provided with first inner arc grooves (6), and both sides of the second ear block (11) are provided with second inner arc grooves (12).
5. The anti-disassembly fastening screw according to claim 4, characterized in that: A hexagonal hole (9) is provided in the middle of one side of the fastening block (4), and a first side groove (8) and a second side groove (10) are provided on the inner wall of the hexagonal hole (9).
6. The anti-disassembly fastening screw according to claim 5, characterized in that: The first side groove (8) and the second side groove (10) are located on the same straight line.
7. The anti-disassembly fastening screw according to claim 1, characterized in that: The disc (1), the nail column (2) and the tip (3) are integrally formed, and both ends of the fastening block (4) are provided with chamfers (7).