Lock nut

Abstract

The utility model discloses a locknut, which belongs to the technical field of fasteners and comprises a nut body, and a friction ring is mounted at one end of the nut body. And the friction ring is provided with cutter teeth matched with the bolt. The cutter teeth on the friction ring and the threads on the bolt form a fastening state, the defects that a nut is prone to loosening and rebounding and poor in reliability under strenuous vibration and outdoor severe environments are overcome, the stability of the locknut is improved, the reliability and safety of connection between the bolt and the nut can be effectively enhanced, and the service life of the locknut is prolonged. And the increase of maintenance cost caused by looseness of the nut is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of fastener technology, specifically relating to an anti-loosening nut. Background Technology

[0002] Currently, when assembling components, bolts and nuts are typically used to secure the two components together. The bolt usually passes through both parts and connects with the nut, thus achieving a fixed connection between the two parts.

[0003] During prolonged use, to prevent nuts from loosening and detaching from bolts, existing technology typically places spring washers between the nut and bolt. The spring washers apply a certain elastic force to the nut, thus preventing loosening. However, the pressure applied by the spring washers to the nut is relatively low, and under severe vibration, the nut can still easily loosen, leading to poor reliability and safety of the connection between products and increased maintenance costs. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an anti-loosening nut, which solves the defects of nuts being prone to loosening and rebounding under severe vibration and harsh outdoor environments, and has poor reliability, thereby improving the stability of the anti-loosening nut.

[0005] This utility model provides the following technical solution:

[0006] A locking nut includes a nut body, one end of which is fitted with a friction ring; the friction ring is provided with cutting teeth that cooperate with a bolt.

[0007] As an optional technical solution of this utility model, the top of the nut body is provided with a groove.

[0008] As an optional technical solution of this utility model, the friction ring is pressed onto the top of the nut body through a groove.

[0009] As an optional technical solution of this utility model, the nut body is provided with a thread inside that mates with the bolt; the nut body is screwed into the bolt spirally from bottom to top through the thread.

[0010] As an optional technical solution of this utility model, the cutting teeth are disposed on the circumferential side inside the friction ring.

[0011] As an optional technical solution of this utility model, the cutting teeth cooperate with the threads on the periphery of the bolt. After the nut body is screwed into the bolt, the cutting teeth and the threads on the periphery of the bolt form a tight state; when the nut body is unscrewed from the bolt, the cutting teeth slide out from the threads on the periphery of the bolt.

[0012] As an optional technical solution of this utility model, the nut body is made of stainless steel.

[0013] As an optional technical solution of this utility model, the surface of the nut body is coated with an anti-corrosion material.

[0014] As an optional technical solution of this utility model, the friction ring is made of stainless steel.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The anti-loosening nut provided by this utility model forms a tight bond between the cutting teeth on the friction ring and the threads on the bolt, solving the defects of nuts being prone to loosening and rebounding and having poor reliability under severe vibration and harsh outdoor environments. It improves the stability of the anti-loosening nut and can effectively enhance the reliability and safety of the connection between the bolt and the nut, avoiding the increase in maintenance costs caused by nut loosening. Attached Figure Description

[0017] Figure 1 This is an assembly diagram of the anti-loosening nut and friction ring in an embodiment of this utility model;

[0018] Figure 2 This is a cross-sectional view of the anti-loosening nut in an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the friction ring in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the assembly of the anti-loosening nut and bolt in an embodiment of this utility model.

[0021] The markings in the diagram are: 1. Nut body; 2. Friction ring; 3. Groove; 4. Cutting teeth. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0023] Example 1

[0024] This embodiment provides an anti-loosening nut that, when assembled with a bolt, is not easily loosened or springs back under severe vibration and harsh outdoor environments.

[0025] like Figures 1-3 As shown, it includes a nut body 1, and a friction ring 2 is installed at one end of the nut body 1; the friction ring 2 is provided with cutting teeth 4 that cooperate with the bolt.

[0026] The top of the nut body 1 is provided with a groove 3, and the friction ring 2 is pressed against the top of the nut body 1 through the groove 3.

[0027] The nut body 1 has internal threads that mate with the bolt; the nut body 1 is screwed into the bolt spirally from bottom to top through the threads.

[0028] The cutting teeth 4 are located on the circumference of the friction ring 2. The cutting teeth 4 engage with the threads on the circumference of the bolt. After the nut body 1 is screwed into the bolt, the cutting teeth 4 and the threads on the circumference of the bolt are tightened, creating mutual restraint of forces in the axial direction to prevent springback. When the nut body 1 is unscrewed from the bolt, the friction ring 2 is pressed down, and the nut body 1 unscrews the bolt in the opposite direction, causing the cutting teeth 4 to slide out from the threads on the circumference of the bolt, thus achieving the disassembly and replaceability of the material.

[0029] like Figure 4 As shown, the force N generated by the elasticity of the friction ring 2 and the pressure N1 on the bolt flange surface generated by the accompanying force N produce intersecting forces on the effective thread to generate torque. In addition, the cutting teeth 4 of the friction ring 2 will tightly hold the thread at the bolt. The two work together to prevent the nut body 1 from rotating freely upward in the axial direction, providing a stable anti-loosening function.

[0030] Furthermore, the lock nut is reusable, easy to tighten, and requires no skilled technicians or special tools. A single unit provides the anti-loosening effect. It facilitates parts management and prevents installation errors. With high torque and strength, it is suitable for any environment.

[0031] Example 2

[0032] This embodiment is based on Embodiment 1, the difference being that the nut body 1 is made of 304 stainless steel, and the surface of the nut body 1 is coated with an anti-corrosion material. In this embodiment, the surface of the nut body 1 is treated with Dacromet coating, effectively ensuring that it is not easily corroded in harsh outdoor environments.

[0033] The friction ring 2 is made of 304 stainless steel.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A locking nut, characterized in that: Includes a nut body (1), with a friction ring (2) installed at one end of the nut body (1); The friction ring (2) is provided with cutting teeth (4) that cooperate with the bolt.

2. The anti-loosening nut according to claim 1, characterized in that: The top of the nut body (1) is provided with a slot (3).

3. The anti-loosening nut according to claim 2, characterized in that: The friction ring (2) is pressed against the top of the nut body (1) through the slot (3).

4. The anti-loosening nut according to claim 3, characterized in that: The nut body (1) has internal threads that mate with the bolt; The nut body (1) is screwed into the bolt from bottom to top through the thread.

5. The anti-loosening nut according to claim 1, characterized in that: The cutting teeth (4) are located on the circumference inside the friction ring (2).

6. The anti-loosening nut according to claim 5, characterized in that: The cutting tooth (4) engages with the thread on the side of the bolt. After the nut body (1) is screwed into the bolt, the cutting tooth (4) and the thread on the side of the bolt are tightened. When the nut body (1) is screwed out of the bolt, the cutting tooth (4) slides out from the thread on the side of the bolt.

7. The anti-loosening nut according to claim 1, characterized in that: The nut body (1) is made of stainless steel.

8. The anti-loosening nut according to claim 1, characterized in that: The surface of the nut body (1) is coated with anti-corrosion material.

9. The anti-loosening nut according to claim 1, characterized in that: The friction ring (2) is made of stainless steel.

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