Anti-vibration locking screw

Abstract

The utility model relates to fastener technical field discloses an anti-vibration and anti-loose screw, including threaded rod, the threaded rod top is provided with fixed rod, the fixed rod inside fixedly connected with connecting rod, the connecting rod top fixedly connected with the nut, the fixed rod outer wall slidingly connected with the moving block, the moving block top fixedly connected with the guide rod, the guide rod outer wall is provided with the spring, the guide rod top fixedly connected with the fixed plate, the threaded rod bottom fixedly connected with screw head, the threaded rod bottom outer wall fixedly connected with at least two anti -skid block. In the utility model, need not predrilling, directly attack into the base body with the screw head and the chip groove, simplify installation. The anti -skid block of threaded rod, sawtooth thread forms micro occlusion, promotes anti -skid and stability, the reverse force increases friction after moving block extrusion spring, strengthens fastening, reduces vibration, and the anti -vibration and anti -loose nature is strong, guarantees long -term stability.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to an anti-vibration and anti-loosening screw. Background Technology

[0002] In fields such as mechanical assembly, automobile manufacturing, and electronic equipment installation, anti-vibration and anti-loosening screws are core fasteners that ensure the stability of component connections. Their performance is directly related to the safe operation of equipment under complex working conditions such as long-term vibration and impact, and is a key element to ensure the normal operation of various mechanical structures and equipment.

[0003] Currently, some screws require pre-drilling of the base material before installation. This not only increases the complexity of installation and prolongs assembly time, but also may affect the fit accuracy between the screw and the base material due to errors during drilling. Furthermore, the threaded outer wall design of traditional anti-vibration and anti-loosening screws is relatively simple, relying mostly on ordinary threads or simple anti-slip structures, making it difficult to form a tight micro-engagement with the connected parts. In continuous vibration environments, insufficient friction can easily lead to loosening. In addition, existing screws lack an effective elastic counterforce mechanism after tightening. When equipment vibrates, the friction between the screw and the connected parts cannot be further enhanced, resulting in unsatisfactory anti-vibration and anti-loosening effects, failing to meet the requirements for long-term stable connections and posing potential risks to equipment reliability. To address these technical problems, this application proposes an anti-vibration and anti-loosening screw. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a vibration-resistant and anti-loosening screw. This invention eliminates the need for pre-drilling, allowing the screw head and chip removal groove to directly penetrate the base, simplifying installation. The anti-slip block and serrated texture of the threaded rod create a micro-engagement, enhancing anti-slip properties and stability. The moving block compresses the spring, increasing friction through a reverse force, strengthening the fastening, reducing vibration, and providing strong vibration resistance and anti-loosening capabilities, ensuring long-term stability.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An anti-vibration and anti-loosening screw includes a threaded rod, a fixed rod at the top of the threaded rod, a connecting rod fixedly connected inside the fixed rod, a nut fixedly connected at the top of the connecting rod, a movable block slidably connected to the outer wall of the fixed rod, a guide rod fixedly connected to the top of the movable block, a spring provided on the outer wall of the guide rod, a fixed plate fixedly connected to the top of the guide rod, a screw head fixedly connected to the bottom of the threaded rod, and at least two anti-slip blocks fixedly connected to the outer wall of the bottom of the threaded rod.

[0007] Furthermore, the nut has a groove inside for connecting an external tool to rotate the threaded rod.

[0008] Furthermore, the outer wall of the nut is provided with anti-slip grooves to increase friction when the nut is rotated.

[0009] Furthermore, the outer wall of the fixed rod is provided with at least two sliding grooves, and the moving block slides up and down on the surface of the fixed rod through the sliding grooves.

[0010] Furthermore, the outer wall of the anti-slip block is provided with anti-slip texture to increase the surface friction with the connected object, thereby increasing stability.

[0011] Furthermore, the outer wall of the screw head is provided with a chip removal groove to optimize the force on the tool and improve cutting stability.

[0012] Furthermore, the connecting rod is fixedly connected to the top of the threaded rod, and the threaded rod can be rotated by rotating the nut.

[0013] Furthermore, a protruding key is provided on the inner side of the moving block, and the sliding groove is an axial keyway, used to limit the relative rotation between the moving block and the fixed rod.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, no pre-drilling is required. The screw head and chip removal groove can be directly driven into the base, simplifying the installation process. The anti-slip block and serrated anti-slip texture on the outer wall of the threaded rod form a micro-engagement with the connected parts, improving anti-slip performance and connection stability, making the connection more convenient and efficient. When the threaded rod is inserted, the moving block squeezes the spring. After the rotation stops, the spring's reverse force increases friction, strengthening the fastening effect, reducing vibration frequency, significantly improving vibration resistance and anti-loosening performance, and ensuring long-term stability. Attached Figure Description

[0016] Figure 1 This is a perspective view of an anti-vibration and anti-loosening screw proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the connecting rod structure of an anti-vibration and anti-loosening screw proposed in this utility model;

[0018] Figure 3 This is a schematic diagram of the screw head structure of an anti-vibration and anti-loosening screw proposed in this utility model.

[0019] Legend:

[0020] 1. Threaded rod; 2. Moving block; 3. Spring; 4. Guide rod; 5. Fixing plate; 6. Anti-slip groove; 7. Sliding groove; 8. Anti-blocking block; 9. Screw head; 10. Connecting rod; 11. Nut; 12. Groove; 13. Anti-slip texture; 14. Chip removal groove; 15. Fixing rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-3 In one embodiment of this utility model: a fixed rod 15 is provided at the top of the threaded rod 1, and at least two sliding grooves 7 are provided on the outer wall of the fixed rod 15. The moving block 2 slides up and down on the surface of the fixed rod 15 through the sliding grooves 7. A connecting rod 10 is fixedly connected inside the fixed rod 15. The connecting rod 10 is fixedly connected to the top of the threaded rod 1. The threaded rod 1 can be rotated by rotating the nut 11. The nut 11 is fixedly connected to the top of the connecting rod 10. The nut 11 has a groove 12 inside for connecting an external tool to rotate the threaded rod 1. The moving block 2 is slidably connected to the outer wall of the fixed rod 15. A guide rod 4 is fixedly connected to the top of the moving block 2. A spring 3 is provided on the outer wall of the guide rod 4. A fixed plate 5 is fixedly connected to the top of the guide rod 4. A screw head 9 is fixedly connected to the bottom of the threaded rod 1. A chip removal groove 14 is provided on the outer wall of the screw head 9 for optimizing the force on the tool and improving cutting stability. At least two anti-slip blocks 8 are fixedly connected to the outer wall of the bottom of the threaded rod 1. The anti-slip blocks 8 have anti-slip textures 13 on their outer walls to increase the surface friction with the connected object, thereby increasing stability.

[0023] Specifically, the threaded rod 1 has a fixed rod 15 at its top end. The outer wall of the fixed rod 15 has at least two sliding grooves 7. The moving block 2 can slide up and down on the surface of the fixed rod 15 through the sliding grooves 7. The fixed rod 15 is fixedly connected to the connecting rod 10 inside. The connecting rod 10 is fixed to the top end of the threaded rod 1, and a nut 11 is also fixedly connected to its top end. The groove 12 inside the nut 11 can be used to connect an external tool to rotate the threaded rod 1. Rotating the nut 11 can also drive the threaded rod 1 to rotate. The top end of the moving block 2 is fixed with a guide rod 4. The outer wall of the guide rod 4 is fitted with a spring 3. The top end of the guide rod 4 is fixedly connected to a fixed plate 5. The bottom end of the threaded rod 1 is fixed with a screw head 9. The chip removal groove 14 on the outer wall of the screw head 9 can optimize the force on the tool and improve cutting stability. The outer wall of the bottom end of the threaded rod 1 is also fixed with at least two anti-slip blocks 8. The anti-slip texture 13 on the outer wall of the anti-slip blocks 8 can increase the surface friction with the connected object to increase stability. When the moving block 2 slides, it will cooperate with the spring 3 to form an elastic buffer, which helps to enhance the tightness of the connection.

[0024] Working principle: This screw is suitable for assembling sandwich structures. The screw head 9 at the front end of the screw rod, combined with the chip removal groove 14, allows direct insertion into the substrate without pre-drilling. The anti-slip slider 8, fixedly connected to the outer wall of the threaded rod 1, features a serrated anti-slip texture 13 that creates a micro-engagement with the surface of the connected parts, enhancing the screw's anti-slip effect and thus strengthening the stability of the screw connection. Using external tools or a wrench, the connecting rod 10 can be rotated through the groove 12 or the nut 11, thereby rotating the threaded rod 1. The anti-slip groove 6 on the outer wall of the nut 11 increases the friction with the wrench when using it, improving the connection effect. As the threaded rod 1 continues to penetrate, the surface of the connector begins to press against the moving block 2, causing the moving block 2 to move along the sliding groove 7 on the outer wall of the fixed rod 15, thereby compressing the spring 3. When the threaded rod 1 stops rotating, the spring 3 generates a counterforce on the fixed plate 5, thereby increasing the friction between the texture on the surface of the threaded rod 1 and the connector, enhancing the fastening effect, thereby reducing the vibration frequency of the screw, and thus improving the anti-vibration and anti-loosening effect of the screw.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A vibration-resistant and anti-loosening screw, comprising a threaded rod (1), characterized in that: The threaded rod (1) is provided with a fixed rod (15) at the top end. A connecting rod (10) is fixedly connected inside the fixed rod (15). A nut (11) is fixedly connected at the top end of the connecting rod (10). A moving block (2) is slidably connected to the outer wall of the fixed rod (15). A guide rod (4) is fixedly connected to the top end of the moving block (2). A spring (3) is provided on the outer wall of the guide rod (4). A fixed plate (5) is fixedly connected to the top end of the guide rod (4). A screw head (9) is fixedly connected to the bottom end of the threaded rod (1). At least two anti-slip blocks (8) are fixedly connected to the outer wall of the bottom end of the threaded rod (1).

2. The anti-vibration and anti-loosening screw according to claim 1, characterized in that: The nut (11) has a groove (12) inside for connecting an external tool to rotate the threaded rod (1).

3. The anti-vibration and anti-loosening screw according to claim 1, characterized in that: The outer wall of the nut (11) is provided with anti-slip grooves (6) to increase friction when rotating the nut (11).

4. The anti-vibration and anti-loosening screw according to claim 1, characterized in that: The outer wall of the fixed rod (15) is provided with at least two sliding grooves (7), and the moving block (2) slides up and down on the surface of the fixed rod (15) through the sliding grooves (7).

5. The anti-vibration and anti-loosening screw according to claim 1, characterized in that: The outer wall of the anti-slip block (8) is provided with anti-slip texture (13) to increase the surface friction with the connected object, thereby increasing stability.

6. The anti-vibration and anti-loosening screw according to claim 1, characterized in that: The outer wall of the screw head (9) is provided with a chip removal groove (14) to optimize the force on the tool and improve cutting stability.

7. The anti-vibration and anti-loosening screw according to claim 1, characterized in that: The connecting rod (10) is fixedly connected to the top of the threaded rod (1), and the threaded rod (1) can be rotated by rotating the nut (11).

8. The anti-vibration and anti-loosening screw according to claim 4, characterized in that: The inner side of the moving block (2) is provided with a protruding key, and the sliding groove (7) is an axial keyway, which is used to restrict the relative rotation between the moving block (2) and the fixed rod (15).

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