Anti-loosening fastener

Abstract

The utility model relates to the technical field of mechanical connection, and discloses an anti-loosening fastener which comprises a bolt, the right end of the bolt is sleeved with a body nut, and a threaded hole is formed in the inner wall of the body nut. According to the anti-loosening fastener, through mutual cooperation of the bolt, the main body nut and the threaded hole, a basic connection framework is constructed, a foundation is laid for a whole fastening system, and through introduction of a combined mechanism of the wedge-shaped ring and the anti-vibration convex points, the connection performance is improved, continuous high precision and stability of the fastener in the using process are ensured, and the anti-loosening fastener is suitable for being used in a large scale. By means of the unique wedge-shaped structure of the wedge-shaped ring, radial component force can be generated in the process of tightening the main body nut, so that friction force between the bolt and a connected part is remarkably increased, and the overall quality of the fastening piece is improved under the condition of vibration generated when equipment runs. The anti-loosening fastener can show excellent stability and reliability, and effectively resist the loosening influence caused by vibration.

Description

Technical Field

[0001] This application relates to the field of mechanical connection technology, specifically to an anti-loosening fastener. Background Technology

[0002] Currently, common methods for preventing bolt loosening include using locking washers, spring washers, double nuts, and chemical adhesives. Locking washers prevent the nut from rotating by increasing friction, while spring washers use the preload generated by their elastic deformation to prevent the nut from moving. The double nut method achieves the purpose of preventing loosening by locking two nuts together. Chemical adhesives achieve the effect of preventing loosening by applying a specific chemical substance to the thread surface to form a cured film. However, each of these methods has obvious limitations. For example, locking washers are prone to losing their effectiveness under strong vibration, spring washers may experience a decrease in elasticity due to fatigue, the double nut method is cumbersome to operate and takes up a lot of space, and chemical adhesives have unstable performance in high temperature or humid environments.

[0003] While the aforementioned traditional anti-loosening measures can meet the requirements to a certain extent, they generally suffer from poor stability and low reliability in practical applications, especially under extreme conditions, making it difficult to maintain a good anti-loosening effect for a long time. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides an anti-loosening fastener that has the advantage of significant anti-loosening effect and solves the problems mentioned in the background technology.

[0005] To achieve the above objectives, this application provides the following technical solution: an anti-loosening fastener, including a bolt, a main nut sleeved on the right end of the bolt, a threaded hole on the inner wall of the main nut, the main nut being threadedly connected to the bolt through the threaded hole, a wedge-shaped ring being fixedly embedded in the inner wall of the main nut, and a plurality of anti-vibration protrusions being fixedly connected to the outer surface of the wedge-shaped ring.

[0006] The above solution, through the interaction of bolts, main nuts, and threaded holes, establishes a basic connection structure, laying the foundation for the entire fastening system. Furthermore, the introduction of a wedge ring and anti-vibration protrusions enhances connection performance, ensuring the fastener's continued high precision and stability during use, thereby improving its overall quality. The wedge ring, with its unique wedge structure, generates a radial force during tightening of the main nut, significantly increasing the friction between the bolt and the connected components. Facing vibrations generated during equipment operation, this anti-loosening fastener exhibits excellent stability and reliability, effectively resisting the loosening effects of vibration and significantly enhancing its stability and reliability under vibration conditions. Moreover, the use of stainless steel for the main nut and wedge ring provides excellent corrosion resistance and high strength, maintaining stable performance in harsh environments and extending the fastener's service life. The combination of the wedge ring and anti-vibration protrusions reduces the need for repeated tightening due to loosening, saving valuable time and labor costs.

[0007] Furthermore, the main nut is configured with a hexagonal head shape, and the main nut is preferably made of stainless steel.

[0008] The above solution, by setting the main nut to a hexagonal head shape, can evenly distribute force during tightening, preventing damage to the main nut due to concentrated force, improving the convenience and efficiency of fastener use. Furthermore, the main nut is made of stainless steel, which has high strength and hardness, effectively resisting loosening and wear, and extending the service life of the fastener.

[0009] Furthermore, the wedge-shaped ring is preferably made of stainless steel.

[0010] The above solution uses stainless steel for the wedge ring to ensure the stability and reliability of the overall structure. Moreover, the corrosion resistance and high strength of stainless steel allow the wedge ring to maintain the integrity of its unique wedge structure and anti-vibration protrusions during long-term use, thus continuously providing an effective anti-loosening effect.

[0011] Furthermore, a fastening hole is provided at the left end of the bolt, and the fastening hole is configured in a cross shape.

[0012] The above solution facilitates bolt fixing by setting fastening holes, and the fastening holes are shaped like a cross, which makes it easy to use a standard Phillips screwdriver or wrench to fix them, improving the convenience and efficiency of operation. Moreover, the cross shape can effectively distribute the force and prevent the bolt head from being damaged due to concentrated force, ensuring the stability and reliability of the fastening.

[0013] Furthermore, a corrosion-resistant protective ring is fitted onto the left end of the bolt, and the inner wall of the corrosion-resistant protective ring is fixedly connected to the outer surface of the bolt.

[0014] The above solution, by setting up an anti-corrosion protective ring, can improve the corrosion resistance of the bolts, effectively isolate the bolts from contact with corrosive environments, and thus extend the service life of the bolts.

[0015] Furthermore, a protective ring is fitted onto the left end of the main nut, and the inner wall of the protective ring is fixedly connected to the outer surface of the main nut.

[0016] The above solution, by setting a protective ring, can protect the main nut and effectively prevent it from being damaged by the external environment.

[0017] Furthermore, a limiting frame is provided at the left end of the bolt, and the left side of the limiting frame is fixedly connected to the outer surface of the bolt.

[0018] The above solution uses a limiting frame to limit the movement of the main nut after the bolt is tightened. The inner wall size of the limiting frame is perfectly matched with the size of the protective ring on the main nut, ensuring that the bolt can stay stably in the designated position when the predetermined tightening force is reached, effectively preventing the main nut from loosening or shifting due to other external forces.

[0019] Furthermore, the bolt is fitted with a spring washer, which is located below the main nut.

[0020] The above solution increases the preload and anti-loosening performance of fasteners by adding spring washers, and the spring washers can absorb vibration and impact energy, thereby improving the durability and reliability of fasteners.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This anti-loosening fastener, through the interaction of bolts, a main nut, and threaded holes, constructs a basic connection structure, laying the foundation for the entire fastening system. Furthermore, by introducing a combination mechanism of wedge rings and anti-vibration protrusions, it enhances connection performance, ensuring continuous high precision and stability during use, thereby improving the overall quality of the fastener. The wedge ring, with its unique wedge structure, generates a radial force during tightening of the main nut, significantly increasing the friction between the bolt and the connected components. Facing vibrations generated during equipment operation, this anti-loosening fastener exhibits excellent stability and reliability, effectively resisting the loosening effects of vibration and significantly enhancing the stability and reliability of the fastener under vibration conditions. Moreover, the main nut and wedge ring are made of stainless steel, possessing excellent corrosion resistance and high strength, maintaining stable performance in harsh environments and extending the fastener's service life. The combination of the wedge ring and anti-vibration protrusions reduces the need for repeated tightening due to loosening, thus saving valuable time and labor costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this application;

[0024] Figure 2 This is a schematic diagram of the bolt structure in this application;

[0025] Figure 3 This is a schematic diagram of the vertical assembly structure of this application;

[0026] Figure 4 For this application Figure 3 A magnified structural diagram at point A.

[0027] In the picture:

[0028] 1. Bolt; 2. Fastening hole; 3. Anti-corrosion retaining ring; 4. Protective ring; 5. Main nut; 6. Spring washer; 7. Limiting frame; 8. Threaded hole; 9. Wedge ring; 10. Vibration-resistant protrusion. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Please see Figure 1 , Figure 3 and Figure 4This embodiment of an anti-loosening fastener includes a bolt 1, with a main nut 5 fitted onto the right end of the bolt 1. The inner wall of the main nut 5 has a threaded hole 8, and the main nut 5 is threadedly connected to the bolt 1 through the threaded hole 8. A wedge-shaped ring 9 is fixedly embedded in the inner wall of the main nut 5, and multiple anti-vibration protrusions 10 are fixedly connected to the outer surface of the wedge-shaped ring 9. Through the mutual cooperation of the bolt 1, the main nut 5, and the threaded hole 8, a basic connection structure is constructed, laying the foundation for the entire fastening system. Furthermore, by introducing the combination mechanism of the wedge-shaped ring 9 and the anti-vibration protrusions 10, the connection performance is improved, ensuring the fastener's continuous high precision and stability during use, thereby improving the overall quality of the fastener. Moreover, the wedge-shaped ring 9, with its unique... The unique wedge-shaped structure generates a radial force during the tightening of the main nut 5, which significantly increases the friction between the bolt 1 and the connected parts. In the face of vibrations generated during equipment operation, this anti-loosening fastener exhibits excellent stability and reliability, effectively resisting the loosening effects of vibration and significantly enhancing the stability and reliability of the fastener under vibration conditions. Furthermore, the use of stainless steel for both the main nut 5 and the wedge ring 9 provides excellent corrosion resistance and high strength, maintaining stable performance in harsh environments and extending the fastener's service life. The cooperation between the wedge ring 9 and the anti-vibration protrusions 10 reduces the need for repeated tightening due to loosening, thereby saving valuable time and labor costs.

[0031] Please see Figure 1 , Figure 2 and Figure 3The main nut 5 is hexagonal in shape and is preferably made of stainless steel. The hexagonal shape of the main nut 5 ensures even force distribution during tightening, preventing damage due to concentrated force and improving the ease of use of the fastener. Furthermore, the stainless steel material provides high strength and hardness, effectively resisting loosening and wear, and extending the service life of the fastener. The wedge ring 9 is also preferably made of stainless steel. This ensures the stability and reliability of the overall structure. Moreover, the corrosion resistance and high strength of stainless steel allow the wedge ring 9 to maintain its unique wedge-shaped structure and the integrity of the vibration-damping protrusions 10 during long-term use, thus ensuring its continued performance. To provide effective anti-loosening, a fastening hole 2 is provided on the left end of bolt 1. The fastening hole 2 is shaped like a cross, which facilitates the fixing of bolt 1. The cross shape of the fastening hole 2 also makes it easy to use a standard Phillips screwdriver or wrench for fixing, improving the convenience and efficiency of operation. Moreover, during the tightening process, the cross shape can effectively distribute the force and prevent the bolt head from being damaged due to concentrated force, ensuring the stability and reliability of the fastening. An anti-corrosion protective ring 3 is fitted on the left end of bolt 1. The inner wall of the anti-corrosion protective ring 3 is fixedly connected to the outer surface of bolt 1. The anti-corrosion protective ring 3 can improve the corrosion resistance of bolt 1 and effectively isolate bolt 1 from contact with corrosive environments, thereby extending the service life of bolt 1.

[0032] Please see Figure 1 , Figure 2 and Figure 3 A protective ring 4 is fitted on the left end of the main nut 5. The inner wall of the protective ring 4 is fixedly connected to the outer surface of the main nut 5. The protective ring 4 can protect the main nut 5 and effectively prevent it from being damaged by the external environment. A limiting frame 7 is provided on the left end of the bolt 1. The left side of the limiting frame 7 is fixedly connected to the outer surface of the bolt 1. The limiting frame 7 can limit the main nut 5 after the bolt 1 is tightened. The inner wall size of the limiting frame 7 is perfectly matched with the size of the protective ring 4 on the main nut 5, ensuring that the bolt 1 can stably stay in the designated position when the predetermined tightening force is reached, effectively preventing the main nut 5 from loosening or displacing due to other external forces. A spring washer 6 is fitted on the bolt 1. The spring washer 6 is located below the main nut 5. The spring washer 6 can increase the preload and anti-loosening performance of the fastener. The spring washer 6 can also absorb vibration and impact energy, thereby improving the durability and reliability of the fastener.

[0033] This embodiment of an anti-loosening fastener establishes a basic connection structure through the cooperation of bolt 1, main nut 5, and threaded hole 8, laying the foundation for the entire fastening system. Furthermore, the introduction of a wedge ring 9 and anti-vibration protrusion 10 enhances connection performance, ensuring continuous high precision and stability during use, thereby improving the overall quality of the fastener. The wedge ring 9, with its unique wedge structure, generates a radial force during tightening of the main nut 5, significantly increasing the friction between the bolt 1 and the connected components. Facing vibrations generated during equipment operation, this anti-loosening fastener exhibits excellent stability and reliability, effectively resisting the loosening effects of vibration and significantly enhancing the stability and reliability of the fastener under vibration conditions. Moreover, the main nut 5 and wedge ring 9 are made of stainless steel, possessing excellent corrosion resistance and high strength, maintaining stable performance in harsh environments and extending the fastener's service life. The cooperation between the wedge ring 9 and the anti-vibration protrusion 10 reduces the need for repeated tightening due to loosening, thus saving valuable time and labor costs.

[0034] The working principle of the above embodiments is as follows:

[0035] During assembly, the wedge ring 9 is first embedded in the inner cavity of the main nut 5. When the bolt 1 is screwed into the main nut 5, the inclined surface of the wedge ring 9 will make close contact with the external thread of the bolt 1, and gradually generate greater contact pressure as it rotates, forming a locking effect that tightens as it is screwed in, thereby effectively preventing loosening. At the same time, the multiple anti-vibration protrusions 10 on the outer surface of the wedge ring 9 can further increase the friction between it and the bolt 1, improving the fastener's anti-loosening performance in a vibration environment. Finally, the spring washer 6 is located below the main nut 5. When the bolt 1 is tightened, the spring washer 6 will undergo elastic deformation, providing additional preload, thereby further preventing the nut from loosening.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-loosening fastener, comprising a bolt (1), characterized in that: The right end of the bolt (1) is fitted with a main nut (5), and the inner wall of the main nut (5) is provided with a threaded hole (8). The main nut (5) is threadedly connected to the bolt (1) through the threaded hole (8). A wedge ring (9) is fixedly embedded in the inner wall of the main nut (5), and multiple anti-vibration protrusions (10) are fixedly connected to the outer surface of the wedge ring (9).

2. The anti-loosening fastener according to claim 1, characterized in that: The main nut (5) is configured with a hexagonal head shape and is made of stainless steel.

3. The anti-loosening fastener according to claim 1, characterized in that: The wedge ring (9) is made of stainless steel.

4. The anti-loosening fastener according to claim 1, characterized in that: The bolt (1) has a fastening hole (2) at its left end, and the fastening hole (2) is set in a cross shape.

5. The anti-loosening fastener according to claim 1, characterized in that: The left end of the bolt (1) is fitted with an anti-corrosion guard ring (3), and the inner wall of the anti-corrosion guard ring (3) is fixedly connected to the outer surface of the bolt (1).

6. The anti-loosening fastener according to claim 1, characterized in that: A protective ring (4) is fitted on the left end of the main nut (5), and the inner wall of the protective ring (4) is fixedly connected to the outer surface of the main nut (5).

7. The anti-loosening fastener according to claim 1, characterized in that: The left end of the bolt (1) is provided with a limiting frame (7), and the left side of the limiting frame (7) is fixedly connected to the outer surface of the bolt (1).

8. The anti-loosening fastener according to claim 1, characterized in that: The bolt (1) is fitted with a spring washer (6), which is located below the main nut (5).

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