Lock nut

Abstract

The utility model relates to the field of locknuts, in particular to a locknut. The locknut comprises a nut body, a trapezoidal block and an ejection mechanism, a gasket is fixedly connected to one side of the nut body, a containing groove is formed in the end, away from the gasket, of the nut body, a nylon ring is fixedly connected into the containing groove, the trapezoidal block is slidably connected into the nut body, and the inclined face of the trapezoidal block is located in the nut body. The trapezoidal block is fixedly connected with a rubber pad far away from the slope. The ejector rod is rotated, the inclined face of the trapezoidal block is extruded through the spherical design at the bottom end of the ejector rod, the rubber pad is pushed to be tightly attached to the bolt, part of vibration energy can be absorbed through the elastic characteristic of the rubber pad, and relative movement between the bolt and the nut is reduced; and the anti-skid patterns on the gasket serve as a third anti-skid mechanism, and through the combined action of the three anti-skid mechanisms, the locknut has higher fastening stability and safety under the complex working condition.

Description

Technical Field

[0001] This utility model relates to the field of anti-loosening nuts, and more particularly to an anti-loosening nut. Background Technology

[0002] In the field of fastener technology, nuts are key components for connecting and fixing mechanical parts, and their fastening effect is directly related to the stability and safety of the entire mechanical structure. However, under complex working conditions such as dynamic loads, vibrations, or temperature changes, traditional nuts often cannot maintain a long-term tight state and are prone to loosening. This may not only cause damage to mechanical parts, but also lead to serious safety accidents.

[0003] To reduce the risk of nuts loosening, the industry commonly uses the method of adding nylon rings to nuts. Nylon rings are widely used in nut anti-loosening designs due to their good wear resistance and elasticity. By fixing the nylon ring between the nut and the connected parts, the frictional properties of nylon material are used to increase the friction between the nut and the connected parts, thereby achieving the purpose of preventing loosening.

[0004] However, although the addition of nylon rings improves the nut's anti-loosening ability to some extent, a single anti-loosening measure is still difficult to completely prevent the nut from loosening under complex working conditions; especially under long-term high-intensity vibration or impact loads, the wear and deformation of nylon rings will gradually intensify, causing their anti-loosening effect to gradually weaken, which may eventually lead to the nut loosening completely.

[0005] Therefore, it is necessary to provide a new anti-loosening nut to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides an anti-loosening nut.

[0007] The anti-loosening nut provided by this utility model includes: a nut body, a trapezoidal block, and an ejection mechanism. A washer is fixedly connected to one side of the nut body. A placement groove is opened at the end of the nut body away from the washer. A nylon ring is fixedly connected inside the placement groove. A trapezoidal block is slidably connected inside the nut body, and the inclined surface of the trapezoidal block is located inside the nut body. A rubber pad is fixedly connected to the trapezoidal block away from its inclined surface. An ejection mechanism for pushing the trapezoidal block is installed between the nut body and the trapezoidal block.

[0008] Preferably, the nut body has a sliding groove, a tension spring, a threaded hole, and a push rod. The end of the nut body away from the placement groove has a sliding groove. The trapezoidal block is slidably connected to the sliding groove. A tension spring is fixedly connected inside the sliding groove. One end of the tension spring is fixedly connected to one end of the trapezoidal block. A threaded hole is opened inside the nut body. A push rod is threadedly connected to the inner wall of the threaded hole. The bottom end of the push rod is in contact with the inclined surface of the trapezoidal block.

[0009] Preferably, the top end of the push rod has a flat groove, and the bottom end of the push rod has a spherical design.

[0010] Preferably, a sealing cap is inserted into the threaded hole, and the sealing cap is made of rubber.

[0011] Preferably, one side of the gasket has anti-slip texture.

[0012] Preferably, the nut body and washer are made of high-strength alloy material to enhance overall durability and resistance to loosening.

[0013] Preferably, the shape and size of the flat groove are designed to fit a standard screwdriver or wrench, making it easy for the user to rotate and adjust the position of the push rod.

[0014] Compared with related technologies, the anti-loosening nut provided by this utility model has the following beneficial effects:

[0015] Triple anti-slip properties significantly improve anti-loosening performance:

[0016] By rotating the push rod, the spherical design at the bottom of the push rod compresses the inclined surface of the trapezoidal block, pushing the rubber pad tightly against the bolt, forming the first layer of anti-slip effect. The elastic properties of the rubber pad can absorb some vibration energy, reducing the relative movement between the bolt and nut, thereby effectively preventing loosening.

[0017] As a second anti-slip mechanism, the nylon ring has a high coefficient of friction and elastic properties that allow it to fit tightly against the bolt surface of the connected parts. It can maintain stable friction even under vibration or impact conditions, further preventing the nut from loosening.

[0018] The anti-slip texture on the washer acts as a third anti-slip mechanism, significantly improving the nut's resistance to loosening by increasing the contact area and friction with the connected parts. The combined effect of these three anti-slip mechanisms gives the anti-loosening nut of this invention higher tightening stability and safety under complex working conditions.

[0019] Simple structure, easy to install and maintain:

[0020] The anti-loosening nut of this invention has a compact structure, fewer parts, and is easy to manufacture, thus reducing production costs. At the same time, the design of the push rod allows users to adjust its position with a simple rotation, thereby achieving flexible control over the compressive force on the trapezoidal block.

[0021] The installation and maintenance of nuts are simple and quick, requiring no special tools or skills, which reduces the difficulty and cost of operation. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of the anti-loosening nut provided by this utility model;

[0023] Figure 2 for Figure 1 The diagram shows the structure of the bottom of the nut body;

[0024] Figure 3 for Figure 1 The diagram shows the internal structure of the nut body.

[0025] The following are the labels in the diagram: 1. Nut body; 2. Washer; 3. Placement groove; 4. Nylon ring; 5. Trapezoidal block; 6. Rubber pad; 7. Slide groove; 8. Tension spring; 9. Threaded hole; 10. Top rod; 101. Flat groove; 11. Sealing cap; 12. Anti-slip texture. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0028] Please see Figure 1-3 An anti-loosening nut is provided, comprising: a nut body 1, a trapezoidal block 5, and an ejection mechanism. A washer 2 is fixedly connected to one side of the nut body 1. A placement groove 3 is provided at the end of the nut body 1 away from the washer 2. A nylon ring 4 is fixedly connected inside the placement groove 3. The trapezoidal block 5 is slidably connected inside the nut body 1, and the inclined surface of the trapezoidal block 5 is located inside the nut body 1. A rubber pad 6 is fixedly connected to the trapezoidal block 5 away from its inclined surface. An ejection mechanism for pushing the trapezoidal block 5 is installed between the nut body 1 and the trapezoidal block 5. An anti-slip texture 12 is provided on one side of the washer 2. The nut body 1 and the washer 2 are made of high-strength alloy material to enhance the overall durability and anti-loosening performance.

[0029] It should be noted that: the movement of trapezoidal block 5 further increases the angle between its inclined surface and the inner wall of nut body 1, enhancing the self-locking effect; the synergistic effect of nylon ring 4 and anti-slip texture 12: nylon ring 4, as the second anti-slip mechanism, utilizes its high coefficient of friction and elastic properties to tightly adhere to the bolt surface of the connected parts, increasing friction and preventing the nut from loosening; the anti-slip texture 12 on washer 2, as the third anti-slip mechanism, further improves the nut's anti-loosening performance by increasing the contact area and friction with the surface of the connected parts.

[0030] Please see Figure 3The nut body 1 has a sliding groove 7, a tension spring 8, a threaded hole 9, and a top rod 10. The end of the nut body 1 away from the placement groove 3 has a sliding groove 7. The trapezoidal block 5 is slidably connected to the sliding groove 7. The sliding groove 7 is fixedly connected to the inside of the tension spring 8. One end of the tension spring 8 is fixedly connected to one end of the trapezoidal block 5. The nut body 1 has a threaded hole 9 inside. The inner wall of the threaded hole 9 is threadedly connected to the top rod 10. The bottom end of the top rod 10 is in contact with the inclined surface of the trapezoidal block 5. The top end of the top rod 10 has a flat groove 101. The bottom end of the top rod 10 is spherical. A sealing cap 11 is inserted into the threaded hole 9. The sealing cap 11 is made of rubber. The shape and size of the flat groove 101 are designed to be compatible with standard screwdrivers or wrenches, so that users can rotate and adjust the position of the top rod 10.

[0031] It should be noted that: the push rod 10 moves downward along the threaded hole 9; the spherical design at the bottom of the push rod 10 gradually contacts the inclined surface of the trapezoidal block 5 and generates a squeezing force. Due to the guiding effect of the inclined surface, the trapezoidal block 5 is pushed towards the bolt direction.

[0032] The working principle of the anti-loosening nut provided by this utility model is as follows:

[0033] Initial tightening state:

[0034] The nut body 1 is tightened to the bolt of the connected part through its thread, and the washer 2 is tightly fitted to the surface of the connected part to provide initial clamping force;

[0035] The trapezoidal block 5 is positioned inside the nut body 1 in a preset position, and its inclined surface forms a certain angle with the inner wall of the nut body 1, providing a basis for the subsequent pressing action.

[0036] The rubber pad 6 is fixed to the end of the trapezoidal block 5 away from the inclined plane, and initially maintains a certain gap with the bolt.

[0037] The nylon ring 4 is installed in the placement groove 3 of the nut body 1 and contacts the bolt surface of the connected parts to provide additional friction.

[0038] When the top rod 10 is not subjected to external force, its bottom spherical design does not contact the inclined surface of the trapezoidal block 5 or only makes slight contact.

[0039] Adjustment and pressing action of push rod 10:

[0040] When it is necessary to enhance the anti-loosening performance of the nut, the user can use a tool to rotate the push rod 10, causing the push rod 10 to move downward along the threaded hole 9;

[0041] The spherical design at the bottom of the push rod 10 gradually contacts the inclined surface of the trapezoidal block 5 and generates a squeezing force. Due to the guiding effect of the inclined surface, the trapezoidal block 5 is pushed towards the bolt direction.

[0042] The movement of trapezoidal block 5 causes rubber pad 6 to fit tightly against the bolt surface, forming the first layer of anti-slip effect, namely the elastic compression anti-slip effect of rubber pad 6.

[0043] Meanwhile, due to the movement of trapezoidal block 5, the angle between its inclined surface and the inner wall of nut body 1 is further increased, enhancing the self-locking effect;

[0044] Synergistic effect of nylon ring 4 and anti-slip texture 12:

[0045] Nylon ring 4, as the second anti-slip mechanism, utilizes its high coefficient of friction and elastic properties to fit tightly against the bolt surface of the connected parts, increasing friction and preventing the nut from loosening;

[0046] The anti-slip texture 12 on the washer 2 serves as a third anti-slip mechanism, further improving the nut's anti-loosening performance by increasing the contact area and friction with the surface of the connected parts.

[0047] Long-term anti-loosening effect:

[0048] Under complex working conditions such as vibration and impact, the triple anti-slip mechanism works together to effectively resist the loosening tendency of the nut;

[0049] The elastic compression of the rubber pad 6, the high friction characteristics of the nylon ring 4, and the increased friction of the anti-slip texture 12 together constitute a stable anti-loosening system.

[0050] Users can flexibly adjust the anti-loosening performance of the nut by adjusting the position and squeezing force of the push rod 10 according to actual working conditions.

[0051] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A locking nut, characterized in that, include: Nut body (1), a washer (2) is fixedly connected to one side of nut body (1), and a placement groove (3) is opened at the end of nut body (1) away from washer (2), and a nylon ring (4) is fixedly connected inside the placement groove (3); Trapezoidal block (5), the nut body (1) is slidably connected to the trapezoidal block (5), and the inclined surface of the trapezoidal block (5) is located inside the nut body (1). The trapezoidal block (5) is fixedly connected to the rubber pad (6) away from its inclined surface. The ejection mechanism is installed between the nut body (1) and the trapezoidal block (5) to push the trapezoidal block (5); The ejection mechanism includes: a slide groove (7), a tension spring (8), a threaded hole (9), and a push rod (10). The nut body (1) has a slide groove (7) at one end away from the placement groove (3). The trapezoidal block (5) is slidably connected to the slide groove (7). The slide groove (7) is fixedly connected to the inside of the tension spring (8). One end of the tension spring (8) is fixedly connected to one end of the trapezoidal block (5). The nut body (1) has a threaded hole (9) inside. The inner wall of the threaded hole (9) is threadedly connected to the push rod (10). The bottom end of the push rod (10) is in contact with the inclined surface of the trapezoidal block (5).

2. The anti-loosening nut according to claim 1, characterized in that, The top of the push rod (10) has a flat groove (101), and the bottom of the push rod (10) is spherical.

3. The anti-loosening nut according to claim 1, characterized in that, A sealing cap (11) is inserted into the threaded hole (9), and the sealing cap (11) is made of rubber.

4. The anti-loosening nut according to claim 1, characterized in that, The gasket (2) has anti-slip texture (12) on one side.

5. The anti-loosening nut according to claim 1, characterized in that, The nut body (1) and the washer (2) are made of high-strength alloy material.

6. The anti-loosening nut according to claim 2, characterized in that, The shape and size of the flat slot (101) are designed to fit a standard screwdriver.

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