Firm nut

Abstract

The utility model relates to the technical field of mechanical parts, in particular to a firm nut which comprises a nut body, the nut body comprises a nut block and an internal thread integrally formed on the inner wall of the nut block, and a sliding groove penetrating through the nut block is integrally formed in the side wall of the nut block. And a fixing device is detachably mounted in the sliding groove in a sliding manner.

Description

Technical Field

[0001] This utility model relates to the field of mechanical parts technology, specifically to a type of fastening nut. Background Technology

[0002] A nut (also known as a bolt) is a part with a central hole and threads on the inside of the hole. It is tightened to fit with a bolt or screw to provide a fastening function. For ease of tool operation, it is usually hexagonal, but square or round designs are also available. Its thread parameters must be strictly matched with the bolt. When used with a bolt, it can quickly fasten the workpiece and is widely used in various fields.

[0003] Although the existing technologies mentioned above can solve the corresponding technical problems, they still have certain defects: after the existing nuts are tightened, if the bolt is subjected to torque due to the movement of the workpiece, it is easy for the bolt and nut to twist and loosen. After a period of use, the loose gap between the nut and the bolt can easily become larger and larger, affecting the connection between the nut and the bolt and making it easy for the nut and bolt to separate and fall off. Utility Model Content

[0004] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a robust nut that offers good connection stability and is not easily detached from the bolt.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a nut body, comprising a nut block and an internal thread integrally formed on the inner wall of the nut block, wherein a sliding groove penetrating the nut block is integrally formed on the side wall of the nut block, and a fixing device is detachably and slidably installed in the sliding groove.

[0006] A further improvement is that the outer wall of the nut block is also provided with an anti-slip layer.

[0007] A further improvement is that the fixing device includes a central column that can be detachably and slidably installed in the sliding groove and a locking groove integrally formed on the outer wall of the central column, and a frustum-shaped hot melt adhesive block is detachably provided at the bottom of the central column.

[0008] A further improvement is that the top of the central column is provided with a hemispherical cap.

[0009] A further improvement is that the outer wall of the pressure cap is integrally formed with several arc-shaped grooves.

[0010] A further improvement is that the bottom surface of the central column is integrally formed with a square fixing groove, and the top surface of the hot melt adhesive block is integrally formed with an upper protrusion that can be interference-fitted with the fixing groove.

[0011] A further improvement is that the inner wall of the fixing groove is provided with several hemispherical fixing protrusions.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When this utility model is used with a bolt, when the bolt is screwed into the nut, the central column can be squeezed by hand at the same time, thereby causing the central column to move the hot melt adhesive block into the nut block. Thus, when the bolt is screwed in, the outer surface of the bolt comes into contact with the hot melt adhesive block and generates heat through friction, causing the hot melt adhesive block to melt. The melted hot melt adhesive is then applied to the outer surface of the bolt. After screwing in, the hot melt adhesive solidifies, thereby filling the gap between the bolt and the nut with hot melt adhesive, making the connection between the two more secure and less likely to fall off. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a front view structural diagram of the nut of this utility model;

[0015] Figure 2 This is a top view structural diagram of the nut of this utility model;

[0016] Figure 3 This is a structural schematic diagram of the front view cross-section of the fixing device of this utility model. Detailed Implementation

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0018] See Figure 1-3As shown, the technical solution adopted in this specific embodiment is: a secure nut, including a nut body 1, the nut body 1 including a nut block 11 and an internal thread 12 integrally formed on the inner wall of the nut block 11, a sliding groove 14 integrally formed on the side wall of the nut block 11 penetrating the nut block 11, a fixing device 2 detachably and slidably installed in the sliding groove 14, the fixing device 2 including a central column 21 detachably and slidably installed in the sliding groove 14 and a locking groove 26 integrally formed on the outer wall of the central column 21, a frustum-shaped hot melt adhesive block 22 detachably provided at the bottom of the central column 26. In use, the nut body 1 is placed on the back of the hole of the workpiece to be fixed, and a bolt is inserted through the hole from the other side of the workpiece, so that the thread of the bolt is aligned with the inner wall of the internal thread 12 of the nut body 1, and then the bolt is rotated to make the external thread of the bolt align with the internal thread 12 of the nut body 1. The bolts mesh with each other, and as they rotate, they descend along the internal thread 12. When the bolts are rotated to the bottom, the workpiece is clamped and fixed by the nut body 1 and the bolt. When the bolts are engaged, the center post 21 can be squeezed by hand while the bolts are screwed into the nut body 1. This causes the center post 21 to move along the sliding groove 14 and the hot melt adhesive block 22 into the nut block 11. The engaging groove 26 integrally formed on the outside of the center post 21 prevents the center post 21 from coming out. Thus, when the bolts are screwed in, the outer surface of the bolts comes into contact with the hot melt adhesive block 22 and generates heat through friction. This causes the hot melt adhesive block 22 to melt, and the melted hot melt adhesive is then applied to the outer surface of the bolts. After screwing in, the hot melt adhesive solidifies, filling the gap between the bolts and the internal thread 12 of the nut body 1, making the connection between the two more secure and less likely to fall off.

[0019] The outer wall of the nut block 11 is also provided with an anti-slip layer 13, which helps to improve the friction coefficient of the outer wall of the nut block 11, and thus makes it less likely to slip when turning the nut block 11.

[0020] The top of the central column 21 is provided with a hemispherical pressure cap 25, which makes it easier to press the central column 21. At the same time, the pressure cap 25, which has a diameter larger than the central column 21, prevents the central column 21 from being too difficult to pull out due to excessive internal pressure.

[0021] The outer wall of the pressure cap 25 is integrally formed with several arc-shaped grooves, which helps to increase the friction between the hand and the pressure cap 25 and prevent slippage when pressing down;

[0022] The bottom surface of the central column 21 is integrally formed with a square fixing groove 23, and the top surface of the hot melt adhesive block 22 is integrally formed with an upper protrusion that can be interference-fitted with the fixing groove 23. This makes the hot melt adhesive block 22 more stable when it is installed. When replacing the hot melt adhesive block 22, the old hot melt adhesive block 22 can be removed by simply pulling it out with force, and the new hot melt adhesive block 22 can be installed by simply pressing it with force. This makes disassembly and assembly more convenient.

[0023] The inner wall of the fixing groove 23 is provided with several hemispherical fixing protrusions 24, which helps to improve the connection strength between the hot melt fastener 22 and the central column 21, and makes it less likely to fall off abnormally during use.

[0024] The working principle of this utility model is as follows: When using this utility model, the nut body 1 is placed on the back of the hole of the workpiece to be fixed, and a bolt is inserted through the hole from the other side of the workpiece, aligning the thread of the bolt with the inner wall of the internal thread 12 of the nut body 1. Rotating the bolt then engages the external thread of the bolt with the internal thread 12 of the nut body 1. As the bolt rotates, it descends along the internal thread 12. When the bolt is rotated to the bottom, the workpiece is clamped and fixed by the nut body 1 and the bolt. When engaging the bolt, it can be manually... Simultaneously, the central column 21 is squeezed, causing it to move along the sliding groove 14 and the hot melt adhesive block 22 into the nut block 11. The engaging groove 26 integrally formed on the outside of the central column 21 prevents it from coming out. Thus, when the bolt is screwed in, the outer surface of the bolt comes into contact with the hot melt adhesive block 22 and generates heat through friction, causing the hot melt adhesive block 22 to melt. The melted hot melt adhesive is then applied to the outer surface of the bolt. After screwing in, the hot melt adhesive solidifies, filling the gap between the bolt and the internal thread 12 of the nut body 1, making the connection between the two more secure and less likely to fall off.

[0025] This utility model aims to protect the structure of the product. The model numbers of the components are not the focus of this utility model's protection, as they are common technology. Any component on the market that can achieve the functions described above can be used as an option. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A captive nut comprising a nut body (1) comprising a nut block (11) and an internal thread (12) integrally formed in an inner wall of the nut block (11), characterized in that: The nut block (11) is integrally formed with a sliding groove (14) penetrating the nut block (11) on the side wall, and a fixing device (2) is detachably and slidably installed in the sliding groove (14).

2. A captive nut according to claim 1, wherein: The nut block (11) is further provided with an anti-skid layer (13) on the outer wall.

3. The captive nut of claim 1, wherein: The fixing device (2) comprises a center column (21) detachably and slidably installed in the sliding groove (14) and a clamping groove (26) integrally formed on the outer wall of the center column (21), and the bottom of the center column (21) is detachably provided with a hot melt adhesive block (22) in the shape of a circular truncated cone.

4. A captive nut according to claim 3, wherein: The top end of the center column (21) is provided with a hemispherical gland (25).

5. A captive nut according to claim 4, wherein: The outer wall of the gland (25) is integrally formed with a plurality of arc-shaped grooves.

6. A captive nut according to claim 3, wherein: The bottom surface of the center column (21) is integrally formed with a square fixing groove (23), and the top surface of the hot melt adhesive block (22) is integrally formed with an upper protruding block in interference fit with the fixing groove (23).

7. A captive nut according to claim 6, wherein: The inner wall of the fixing groove (23) is provided with a plurality of hemispherical fixing protruding blocks (24).

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