Lock nut

By designing anti-loosening nuts that integrate multiple anti-loosening mechanisms, including anti-loosening components, fixing components and washers components, the problem that a single anti-loosening mechanism in the prior art is difficult to cope with complex working conditions, achieving higher stability and reliability.

CN222991905UActive Publication Date: 2025-06-17WENZHOU ZHONGYUAN AUTOMOBILE & MOTORCYCLE STANDARD PARTS CO LTD
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Patent Information

Application Number
CN202422374888.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-27
Publication Date
2025-06-17
Estimated Expiration
2034-09-27

AI Technical Summary

Technical Problem

The existing anti-loosening nut designs often focus on a single anti-loosening mechanism, making it difficult to fully cope with loosening problems under various complex working conditions, and have problems such as limited material performance, complex installation, inconvenient maintenance and high processing costs.

Method used

A lock nut that integrates multiple locking mechanisms is designed, including the nut body, locking assembly, fixing assembly and washer assembly. The anti-loosening assembly provides multiple anti-loosening mechanisms through the combination of a receiving groove, a first anti-loosening member, a screw counterbore, a receptacle and a second anti-loosening member; the fixing assembly enhances the fixing strength of the nut through a fixing hole and a fastening screw; the washer assembly increases the contact area and friction through a washer and an anti-slip bump.

Benefits of technology

By integrating multiple anti-loosening mechanisms, the stability and reliability of the nuts in harsh working conditions such as vibration and impact are significantly improved, ensuring the durability and safety of the fastening connection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the field of nuts, and particularly relates to a locknut. Comprising a nut body which is provided with a first inner threaded hole, and further comprises an anti-loosening assembly and a locking assembly, the anti-loosening assembly comprises a containing groove formed in the upper portion of the nut body, a first anti-loosening piece arranged in the containing groove, a screw counterbore penetrating from one side of the nut body to the other side of the nut body, a containing piece arranged on the front portion of the nut body and a second anti-loosening piece arranged in the containing piece. Wherein a first fastening screw matched with the screw counterbore is arranged in the screw counterbore, a first screw channel communicated with the screw counterbore is formed in the first anti-loosening piece, and fastening piece channels communicated with the first inner threaded hole are formed in the containing piece and the second anti-loosening piece. A second screw channel which is communicated with the containing piece, the second anti-loosening piece and the nut body is arranged among the containing piece, the second anti-loosening piece and the nut body, and a matched second fastening screw is arranged in the second screw channel in a penetrating mode. The utility model discloses a locknut, and aims to provide a locknut which integrates various lockmechanisms into a whole.
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Description

Technical Field

[0001] The utility model belongs to the technical field of nuts, in particular to an anti-loosening nut. Background Art

[0002] As an important fastener, anti-loosening nuts are widely used in various fields such as machinery, automobiles, aerospace, and construction. Their main function is to ensure that the connection between nuts and bolts remains tight under harsh working conditions such as vibration, impact, or temperature changes to prevent loosening or falling off, thereby ensuring the safe operation and long-term stability of the equipment.

[0003] Although there are many designs of anti-loosening nuts on the market, for example, although locking washers can increase friction resistance to a certain extent, their effect is limited by material properties and the use environment, and they are complicated to install and inconvenient to maintain. Although self-locking threads can effectively prevent loosening, their processing costs are high, and the self-locking effect may be weakened under certain extreme working conditions. In addition, many existing anti-loosening nut designs often only focus on a single anti-loosening mechanism, which makes it difficult to fully deal with loosening problems under various complex working conditions. Utility Model Content

[0004] The utility model aims to provide a locking nut which integrates a plurality of locking mechanisms into one.

[0005] The purpose of the utility model is achieved in this way. A locking nut comprises a nut body, wherein the nut body has a first internal threaded hole, and further comprises:

[0006] An anti-loosening assembly, the anti-loosening assembly comprising a receiving groove provided at the upper portion of the nut body, a first anti-loosening member provided in the receiving groove, a screw countersunk hole penetrating from one side of the nut body to the other side, a receiving member provided at the front portion of the nut body, and a second anti-loosening member provided in the receiving member;

[0007] Among them, a matching first fastening screw is provided in the screw countersunk hole, a first screw channel connected to the screw countersunk hole is provided on the first anti-loosening part, a fastener channel connected to the first internal threaded hole is provided on the accommodating part and the second anti-loosening part, and a second screw channel connected to the accommodating part, the second anti-loosening part and the nut body is provided, and a matching second fastening screw is passed through the inside.

[0008] The utility model is further configured that a fixing component is provided on the side wall of the nut body.

[0009] The utility model is further configured that the fixing assembly includes:

[0010] A fixing hole, which is provided on the side wall of the nut body and is connected to the first internal threaded hole, and a threaded section is also provided in the fixing hole;

[0011] A third fastening screw is inserted through the fixing hole and is engaged with the threaded section.

[0012] The utility model is further configured such that a washer assembly is provided on a side of the nut body close to the connected member.

[0013] The utility model is further configured such that the washer assembly includes:

[0014] A washer is provided on a side of the nut body close to the connected member;

[0015] Anti-slip bumps, and a plurality of the anti-slip bumps are uniformly provided on a side of the washer close to the connected member.

[0016] The utility model is further configured such that both the first anti-loosening member and the second anti-loosening member are made of an elastic material.

[0017] The utility model is further configured such that the elastic material is natural rubber.

[0018] By adopting the above technical solutions, the beneficial effects obtained by the utility model are as follows:

[0019] 1. By designing the first anti-loosening member in the receiving groove and the second anti-loosening member in the receiving member, a multiple anti-loosening mechanism is realized. With this design, when the nut is subjected to vibration or impact, through the interaction between different components, it can effectively resist loosening, significantly enhancing the stability of the fastening connection.

[0020] 2. By adding a fixing assembly on the side wall of the nut body, including a fixing hole and a third fastening screw engaged therewith, the fixing strength of the nut at the installation position is further enhanced. This design prevents the nut from rotating or displacing due to external forces, ensuring the durability and reliability of the fastening connection.

[0021] 3. By providing a washer assembly on a side of the nut body close to the fastening member, especially a washer with anti-slip bumps, the contact area and friction between the nut and the connected member are significantly increased. This helps prevent relative sliding between the nut and the connected member under vibration or impact conditions, improving the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 is a structural schematic diagram of each component of the utility model;

[0024] Figure 3 is a left view of the utility model installed on the connected member;

[0025] Figure 4This utility model Figure 3 A cross-sectional view of

[0026] Figure 5 This utility model Figure 4 Schematic diagram of the enlarged structure of part A.

[0027] The reference numerals in the figure are: 1. first internal threaded hole; 2. anti-loosening assembly; 200. accommodating groove; 201. first anti-loosening member; 202. screw countersunk hole; 203. accommodating member; 204. second anti-loosening member; 205. first fastening screw; 206. first screw channel; 207. fastener channel; 208. second screw channel; 209. second fastening screw; 3. fixing assembly; 300. fixing hole; 301. threaded section; 302. third fastening screw; 4. washer assembly; 400. washer; 401. anti-slip bump; 5. fastener; 6. connected member 7. nut body. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings. Figures 1-5 :

[0029] Embodiment 1:

[0030] This embodiment provides a locking nut, comprising a nut body 7, wherein the nut body 7 has a first internal threaded hole 1, and further comprising:

[0031] The anti-loosening assembly 2 includes a receiving groove 200 provided at the upper part of the nut body 7, a first anti-loosening member 201 provided in the receiving groove 200, a screw countersunk hole 202 penetrating from one side of the nut body 7 to the other side, a receiving member 203 provided at the front part of the nut body 7, and a second anti-loosening member 204 provided in the receiving member 203;

[0032] Among them, a matching first fastening screw 205 is provided in the screw countersunk hole 202, a first screw channel 206 connected to the screw countersunk hole 202 is provided on the first anti-loosening component 201, and a fastener channel 207 connected to the first internal threaded hole 1 is provided on the accommodating component 203 and the second anti-loosening component 204, and a second screw channel 208 connected to the accommodating component 203, the second anti-loosening component 204 and the nut body 7 is provided, and a matching second fastening screw 209 is passed through the inside.

[0033] The anti-loosening assembly 2 provides multiple anti-loosening mechanisms to ensure that the nut does not loosen under conditions of vibration, impact, etc. The anti-loosening assembly 2 includes a receiving groove 200, a first anti-loosening member 201, a screw countersunk hole 202, a receiving member 203, a second anti-loosening member 204 and other parts.

[0034] The receiving groove 200 is used to install the first anti-loosening member 201, providing part of the mechanical support for anti-loosening. The receiving groove 200 is located in the upper part of the nut body, and the groove shape of the receiving groove 200 matches that of the first anti-loosening member 201.

[0035] The first anti-loosening member 201 exerts a certain pre-tightening force or resistance on the nut body 7 through its elasticity or special structure to prevent loosening. The shape of the first anti-loosening member 201 can be a rectangular block, and a first screw passage 206 for the first fastening screw 205 to pass through is provided inside. It is installed in the receiving groove 200 through the first fastening screw 205, and through the cooperation with the first fastening screw 205 and the receiving groove 200, a first anti-loosening mechanism is provided for the anti-loosening nut.

[0036] The receiving member 203 provides an installation position for the second anti-loosening member 204. The receiving member 203 can be designed as an annular structure and is located at the front part of the nut body 7, and an annular groove providing an installation space for the second anti-loosening member 204 is provided inside. The second anti-loosening member 204 can be fixed in the annular groove by means such as an adhesive. A second screw passage 208 communicating with each other for the second fastening screw 209 to pass through is provided among the receiving member 203, the second anti-loosening member 204, and the nut body 7. The receiving member 203 and the second anti-loosening member 204 are fixed on the nut body 7 through the second fastening screw 209. Through the cooperation among the receiving member 203, the second anti-loosening member 204, and the second fastening screw 209, a good sealing effect is provided for the anti-loosening nut.

[0037] Embodiment 2:

[0038] This embodiment provides an anti-loosening nut, which, in addition to including the technical solutions of the above embodiment, further has the following technical features.

[0039] A fixing assembly 3 is provided on the side wall of the nut body 7.

[0040] The fixing assembly 3 is used to enhance the fastening effect between the anti-loosening nut and the connected part 6, prevent the nut from loosening or falling off during use, and improve the stability and safety of the connection.

[0041] Embodiment 3:

[0042] This embodiment provides an anti-loosening nut, which, in addition to including the technical solutions of the above embodiment, further has the following technical features.

[0043] The fixing assembly 3 includes:

[0044] A fixing hole 300 is provided on the side wall of the nut body 7 and communicates with the first internal thread hole 1. A threaded section 301 is further provided in the fixing hole 300;

[0045] The third fastening screw 302 is inserted through the fixing hole 300 and is engaged with the threaded section 301.

[0046] The fixing hole 300, as the installation position of the third fastening screw 302, communicates with the first internal threaded hole 1 of the nut body to form an additional fixing point. The shape of the fixing hole 300 is a cylindrical hole matching the third fastening screw 302, facilitating the passage of the third fastening screw 302, and a threaded section 301 matching the threaded portion of the third fastening screw 302 is provided in the fixing hole 300.

[0047] The third fastening screw 302 further fastens the nut body 7 to the connected part 6 by passing through the fixing hole 300 and engaging with the threaded section 301, increasing the stability of the connection. The third fastening screw 302 is generally a cylindrical body with threads to cooperate with the threaded section 301 in the fixing hole 300. The third fastening screw 302 is installed in the fixing hole 300 by threaded connection and abuts against the bolt in the first internal threaded hole 1, and through the cooperation between the fixing hole 300 and the third fastening screw 302, a second anti-loosening mechanism is provided for the anti-loosening thread.

[0048] Embodiment 4:

[0049] This embodiment provides a locknut, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0050] A washer assembly 4 is provided on one side of the nut body 7 close to the connected part 6.

[0051] The washer assembly 4 is used to increase the contact area between the nut body and the connected part 6, improving the stability and sealing performance of the connection.

[0052] Embodiment 5:

[0053] This embodiment provides a locknut, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0054] The washer assembly 4 includes:

[0055] A washer 400, provided on one side of the nut body 7 close to the connected part 6;

[0056] Anti-slip bumps 401, and a plurality of the anti-slip bumps 401 are evenly provided on one side of the washer 400 close to the connected part 6.

[0057] The washer assembly 4 is composed of two parts, namely the washer 400 and the anti-slip bumps 401, and the two are usually integrally formed or firmly connected by other means.

[0058] The washer 400, as the main part of the washer assembly 4, provides a basic contact surface between the nut body 7 and the connected part 6, disperses the fastening force, and protects the connected part 6 and the nut body 7 from excessive wear. The washer 400 is usually circular or of other suitable shapes, with flat upper and lower surfaces and a suitable thickness. Its edge may be designed to be smooth or with a certain chamfer to reduce possible scratches during installation. One side of the washer 400 abuts against the nut body, and the other side abuts against the connected part 6.

[0059] The anti-slip bumps 401 are used to increase the friction between the washer 400 and the connected part 6, preventing the nut from loosening under vibration or impact conditions. The anti-slip bumps 401 can be designed in a shape protruding from the surface of the washer 400 close to the connected part 6, which can be dot-shaped, strip-shaped or other shapes that can effectively increase the friction.

[0060] Embodiment 6:

[0061] This embodiment provides a locknut, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0062] Both the first anti-loosening member 201 and the second anti-loosening member 204 are made of elastic materials.

[0063] An elastic material refers to a material that deforms when subjected to an external force and can return to its original shape or an approximately original shape after the external force is removed. This property enables the material to absorb and store energy and release this energy when needed. The purpose of making the first anti-loosening member 201 of an elastic material is that when the fastener 5 is fitted with the nut body 7 and tightened, the first fastening screw 205 applies pressure to the first anti-loosening member 201 through the screw counterbore 202 and the first screw channel 206, causing it to deform and closely adhere to the surface of the fastener 5, thereby achieving the first level of anti-loosening effect.

[0064] The purpose of making the second anti-loosening member 204 of an elastic material is to squeeze the internal fastener 5 through the characteristics of the elastic material, thereby achieving a sealing effect to prevent damage to internal components caused by the intrusion of external moisture and dust, and further improving the service life of the locknut.

[0065] Embodiment 7:

[0066] This embodiment provides a locknut, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0067] The elastic material is natural rubber.

[0068] Natural rubber has excellent elasticity, with a relatively low elastic modulus and an extremely high elongation rate. This means that under the action of an external force, natural rubber can undergo large deformations and quickly return to its original state after the external force is removed. This is a better choice among elastic materials whether it is for the first anti-loosening member 201 that needs to generate deformation by extrusion to achieve the anti-loosening effect or the second anti-loosening member 204 that also needs to generate deformation by extrusion to achieve the sealing effect.

[0069] The above embodiments are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A locking nut, comprising a nut body (7), wherein the nut body (7) has a first internal threaded hole (1), characterized in that: Also includes: An anti-loosening assembly (2), the anti-loosening assembly (2) comprising a receiving groove (200) provided at the upper portion of the nut body (7), a first anti-loosening member (201) provided in the receiving groove (200), a screw countersunk hole (202) extending from one side of the nut body (7) to the other side, a receiving member (203) provided at the front portion of the nut body (7), and a second anti-loosening member (204) provided in the receiving member (203); A matching first fastening screw (205) is provided in the screw countersunk hole (202), a first screw channel (206) connected to the screw countersunk hole (202) is provided on the first anti-loosening member (201), a fastener channel (207) connected to the first internal threaded hole (1) is provided on the accommodating member (203) and the second anti-loosening member (204), and a second screw channel (208) connected to the accommodating member (203), the second anti-loosening member (204) and the nut body (7) is provided, and a matching second fastening screw (209) is passed through the inside.

2. A locking nut according to claim 1, characterized in that: A fixing assembly (3) is provided on the side wall of the nut body (7).

3. A locking nut according to claim 2, characterized in that: The fixing assembly (3) comprises: A fixing hole (300) is provided on the side wall of the nut body (7) and is communicated with the first internal threaded hole (1); a threaded section (301) is also provided in the fixing hole (300); A third fastening screw (302) is inserted into the fixing hole (300) and matched with the threaded section (301).

4. The anti-loosening nut according to claim 1, characterized in that: A washer assembly (4) is provided on one side of the nut body (7) close to the connected member (6).

5. A locking nut according to claim 4, characterized in that: The gasket assembly (4) comprises: A washer (400) is arranged on a side of the nut body (7) close to the connected member (6); Anti-skid bumps (401), a plurality of the anti-skid bumps (401) are evenly arranged on a side of the gasket (400) close to the connected component (6).

6. The anti-loosening nut according to claim 1, characterized in that: The first anti-loosening component (201) and the second anti-loosening component (204) are both made of elastic material.

7. A locking nut according to claim 6, characterized in that: The elastic material is natural rubber.