A bolt with anti-loosening effect

Abstract

This application provides a bolt with anti-loosening effect, belonging to the field of fastener technology, which solves the technical problems of poor stability and low strength of existing straight bolts under load. It includes a bolt body, a bolt head connected to one end of the bolt body, a first threaded groove at the end of the bolt body away from the bolt head, and a loosening component on the outside of the bolt body. The anti-loosening component includes a limiting mechanism and an anti-slip mechanism, which work together. This utility model can be widely used in the field of fastener technology.

Description

Technical Field

[0001] This application belongs to the field of fastener technology, and more specifically, relates to a bolt with anti-loosening effect. Background Technology

[0002] A bolt is a cylindrical fastener with external threads that needs to be used in conjunction with a nut. Its core function is to transmit loads and prevent loosening. It is generally composed of a head, a shank, and a threaded section, and is widely used in automobile engines, wind turbines, and other fields.

[0003] The existing bolts have the following technical problems when used: In some special installation scenarios that require suspending load-bearing components, ordinary straight bolts may cause the load-bearing components to slide back and forth on the bolt surface when suspending some load-bearing components, affecting the stability of the load-bearing components. However, if auxiliary grooves are opened on the bolt, it will affect the strength of the bolt and fail to meet the installation requirements, thus limiting its application range. Utility Model Content

[0004] To address the technical problems of poor stability and low strength of existing straight bolts under load, a bolt with good stability, high strength, and anti-loosening effect is provided.

[0005] To achieve the above objectives, the technical solution adopted in this application is: a bolt with anti-loosening effect, comprising a bolt body, a bolt head connected to one end of the outer side of the bolt body, a first thread groove provided at the end of the bolt body away from the bolt head, and an anti-loosening component provided on the outside of the bolt body, the anti-loosening component including a limiting mechanism and an anti-slip mechanism, the anti-loosening component and the anti-slip mechanism being used in conjunction.

[0006] Preferably, the anti-loosening component includes a limiting hole located in the middle of the first threaded groove, the limiting hole penetrating the first threaded groove, a nut being threadedly connected to the outer side of the first threaded groove, and a limiting pin slidingly engaging inside the limiting hole to limit the nut.

[0007] Preferably, the limiting mechanism includes a second threaded groove located on the outer side of the bolt body near the end of the first threaded groove. A washer is threadedly connected to the outer side of the first threaded groove. Multiple limiting grooves are provided on the top of the outer side of the washer. Multiple limiting blocks are connected to the outer side of the nut near the washer.

[0008] Preferably, the anti-slip mechanism includes a protective coating located on one side outside the bolt body, and the outer side of the protective coating has anti-slip texture.

[0009] Preferably, the surface of the bolt body is treated with hot-dip galvanizing.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] By using a combination of fixing, limiting, and anti-slip mechanisms, the curved design of the bolt body makes it more stable when suspending load-bearing components. It eliminates the need for auxiliary grooves on the outside of the bolt body to limit the bolt body, thus avoiding any impact on the overall strength of the bolt body. At the same time, the use of limiting holes and limiting pins reduces the possibility of the nut loosening under long-term and frequent vibration, further enhancing the practicality and reliability of the device.

[0012] The bolt body is treated with hot-dip galvanizing to cover its surface, and then a protective coating is applied. The hot-dip galvanizing process forms a zinc layer on the surface of the bolt body, which isolates the bolt body from the external environment, effectively reducing the bolt from being corroded by corrosive substances in the external environment, and extending the service life and reliability of the bolt body. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the bolt head structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the bolt body of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the first threaded groove of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the nut of this utility model.

[0018] Explanation of symbols in the diagram:

[0019] 1. Bolt body; 2. Bolt head; 3. First thread groove; 4. Limiting hole; 5. Nut; 6. Limiting pin; 7. Washer; 8. Limiting groove; 9. Limiting block; 10. Protective coating; 11. Anti-slip texture; 12. Second thread groove. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] like Figures 1-4 As shown, this application provides a bolt with anti-loosening effect, including a bolt body 1, a bolt head 2 connected to one end of the outer side of the bolt body 1, a first thread groove 3 provided at the end of the bolt body 1 away from the bolt head 2, and an anti-loosening component provided on the outside of the bolt body 1. The anti-loosening component includes a limiting mechanism and an anti-slip mechanism, and the anti-loosening component and the anti-slip mechanism are used in conjunction.

[0023] Furthermore, in this embodiment, the anti-loosening component includes a limiting hole 4, which is located in the middle of the first threaded groove 3. The limiting hole 4 penetrates the first threaded groove 3, and a nut 5 is threadedly connected to the outside of the first threaded groove 3. A limiting pin 6 is slidably fitted inside the limiting hole 4, and the limiting pin 6 limits the nut 5.

[0024] Furthermore, in this embodiment, the limiting mechanism includes a second threaded groove 12, which is located on the outside of the bolt body 1 near the end of the first threaded groove 3. A washer 7 is threadedly connected to the outside of the first threaded groove 3. Multiple sets of limiting grooves 8 are provided on the top of the outside of the washer 7. Multiple sets of limiting blocks 9 are connected to the outside of the nut 5 near the washer 7.

[0025] Furthermore, in this embodiment, the anti-slip mechanism includes a protective coating 10, which is located on one side outside the bolt body 1, and the outer side of the protective coating 10 is provided with anti-slip texture 11.

[0026] In the technical solution adopted in this embodiment, a protective coating 10 is first applied to the surface of the bolt body 1 using powder coating technology, and then anti-slip texture 11 is processed on the surface of the protective coating 10 by chemical etching.

[0027] Furthermore, in this embodiment, the surface of the bolt body 1 is treated with hot-dip galvanizing.

[0028] The middle part of the bolt body 1 is curved. In use, the bolt body 1 is passed through two fixed seats with holes, the bolt head 2 is locked on the outside of one of the fixed seats, and then the washer 7 is installed on the outside of the second thread groove 12 by rotation. The pitch between the second thread groove 12 and the washer 7 is smaller than that between the nut 5 and the first thread groove 3. This means that the threads of the second thread groove 12 are more densely distributed and the helix angle of the threads is smaller. This makes the second thread groove 12 and the washer 7 less likely to loosen on their own due to vibration or load in actual use, which improves the self-locking ability. At the same time, more threads participate in the load-bearing, which has a good stress dispersion effect, reduces the load on a single thread, reduces the risk of thread shearing, and improves reliability.

[0029] The washer 7 is located on one side of another set of fixing seats. Then, the nut 5 is rotated to make it engage with the first threaded groove 3. Before the nut 5 and the washer 7 come into contact, the limiting block 9 at the bottom of the nut 5 will follow the rotation of the nut 5 and gradually enter the limiting groove 8 inside the washer 7. When the nut 5 and the washer 7 are in close contact, the limiting block 9 is just locked into the limiting groove 8. The outer side of the limiting groove 8 is provided with an arc-shaped slope that matches the width of the limiting block 9. When the nut 5 is about to approach the washer 7, the limiting block 9 and the limiting groove 8 come close to each other. At this time, the nut 5 continues to rotate, and the limiting block 9 continues to slide along the slope opened on the outer side of the limiting groove 8 until the limiting block 9 is locked into the limiting groove 8. When the limiting block 9 is locked into the limiting groove 8, the nut 5 and the washer 7 are directly connected. The excellent self-locking ability provided by the washer 7 makes the connection between the bolt head 2 and the first threaded groove 3 more stable and reliable.

[0030] Then, the limiting pin 6 is inserted into the limiting hole 4, and the two ends of the limiting pin 6 are pried open to fix it on both sides of the limiting hole 4, thereby reducing the possibility of the limiting pin 6 coming off. This improves the limiting and blocking effect of the limiting pin 6 on the nut 5 under mechanical vibration. The limiting pin 6 needs to withstand bending stress during use and is generally made of spring steel. The high strength and toughness of spring steel enable the limiting pin 6 to maintain high stability and practicality even under bending and vibration.

[0031] The bolt body 1 is bent and has a half-thread design, meaning that only half the length of the first thread groove 3 is provided on the bolt body 1. The bolt body 1 is made of 40Cr material and undergoes a special heat treatment process to achieve a high strength standard of level 5, possessing good mechanical properties and load-bearing capacity. The bent bolt body 1 ensures that when suspending load-bearing components, it remains in a bent position and remains stable without significant external interference, effectively addressing the needs in special installation scenarios. At the same time, the anti-slip texture 11 on the surface of the protective coating 10 increases the roughness of the contact surface, improving the coefficient of friction between the bolt body 1 and the load-bearing component, further enhancing the stability and reliability of the bolt body 1 when suspending load-bearing components.

[0032] A transition fillet is provided between the bolt body 1 and the bolt head 2. The design of this transition fillet can effectively disperse stress concentration and prevent the bolt head 2 from breaking at the connection between the bolt body 1 due to stress concentration during use, thereby further improving the structural strength and stability of the bolt body 1.

[0033] By using the fixing mechanism, limiting mechanism and anti-slip mechanism in combination, the bending design of the bolt body 1 when suspending the load-bearing component makes its suspension more stable. It is not necessary to open the limiting auxiliary groove on the outside of the bolt body 1, so as not to affect the overall strength of the bolt body 1. At the same time, the use of limiting hole 4 and limiting pin 6 reduces the possibility of the nut 5 loosening under long-term and frequent vibration, further enhancing the practicality and reliability of the device.

[0034] The surface of the bolt body 1 is treated with hot-dip galvanizing to cover the surface of the bolt body 1, and then a protective coating 10 is applied to the surface. Through the hot-dip galvanizing process, a zinc layer is formed on the surface of the bolt body 1, which isolates the bolt body 1 from the external environment, effectively reducing the corrosion of the bolt by corrosive substances in the external environment, and extending the service life and reliability of the bolt body 1.

[0035] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship 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, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A bolt with anti-loosening effect, characterized in that, The bolt body includes a bolt head connected to one end of its outer side. The bolt body has a first threaded groove at the end away from the bolt head. An anti-loosening component is provided on the outside of the bolt body. The anti-loosening component includes a limiting mechanism and an anti-slip mechanism, which are used in conjunction with each other.

2. The bolt with anti-loosening effect according to claim 1, characterized in that, The anti-loosening component includes a limiting hole located in the middle of the first threaded groove. The limiting hole penetrates the first threaded groove. A nut is threadedly connected to the outside of the first threaded groove. A limiting pin is slidably fitted inside the limiting hole to limit the nut.

3. The bolt with anti-loosening effect according to claim 2, characterized in that, The limiting mechanism includes a second threaded groove located on the outer side of the bolt body near the end of the first threaded groove. A washer is threadedly connected to the outer side of the first threaded groove. Multiple limiting grooves are provided on the top outer side of the washer. Multiple limiting blocks are connected to the outer side of the nut near the washer.

4. The bolt with anti-loosening effect according to claim 3, characterized in that, The anti-slip mechanism includes a protective coating located on one side outside the bolt body, and the outer side of the protective coating has anti-slip textures.

5. The bolt with anti-loosening effect according to claim 1, characterized in that, The surface of the bolt body is treated with hot-dip galvanizing.

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