Special-shaped bolt and nut assembly

Abstract

The utility model provides a special-shaped bolt and nut assembly, which belongs to the technical field of special-shaped bolt and nut assemblies and comprises a hexagonal nut. The screw rod is fixedly connected to the lower end of the hexagonal nut; the hexagonal nut is in threaded connection with the circumferential surface of the screw rod; the screw is inserted into the hexagonal nut, when the screw is twisted to a required distance, the spring in the first notch is twisted to a certain degree on the circumferential surface of the fixing rod to drive the clamping strip to abut against the screw, and the limiting clamping groove in one side end of the clamping strip clamps threads on the circumferential surface of the screw, so that the hexagonal nut cannot loosen due to reverse rotation caused by vibration; and when the hexagonal nut is taken out, the clamping strip can be adjusted through movement of the first limiting block, the flexibility of the assembly is improved through the structure, the hexagonal nut can be taken out under the condition that the assembly is not damaged, and the repeated usability of the assembly is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of special-shaped bolt and nut assemblies, and in particular relates to a special-shaped bolt and nut assembly. Background Art

[0002] Bolt and nut assembly is a common fastener, which consists of two parts, bolt and nut, and is used to connect and fix two or more workpieces. When this assembly is working, the bolt usually passes through the hole of the workpiece, and then the nut is used to fix the bolt to achieve the purpose of fastening. Bolt and nut assembly is widely used in many fields such as machinery, construction, automobile, aviation, etc.

[0003] The patent document with the announcement number "CN213775993U" records "a special-shaped bolt and nut assembly, belonging to the technical field related to special-shaped bolt and nut assemblies. The utility model includes a bolt body and a nut body, the bolt body and the nut body are matched and connected, a submerged hexagonal groove is provided at the center position of one end of the bolt body away from the nut body, and a docking cover with a hollow structure inside and used to accommodate the tip of the bolt body is seamlessly welded at one end of the nut body away from the bolt body. The utility model is a special-shaped bolt and nut assembly, the bolt body and the nut body are very tightly connected, and as a connecting medium for connecting mechanical structural parts, the mechanical structural parts are more stable when connected. After the bolt body and the nut body are connected, the nut body can be prevented from rotating in the opposite direction and loosening, thereby ensuring the effectiveness of the connection, which is simple and practical".

[0004] The above patent can prevent the nut body from rotating in the opposite direction by making the stainless steel top plate in real-time contact with the surface of the connector through the pop-up stainless steel top plate, which would cause the nut body to loosen and affect the tightness of the connection. However, the above patent can only prevent the nut body from rotating in the opposite direction and loosening, and cannot unscrew the nut from the threaded surface of the screw without damage, and cannot make the assembly reused. Utility Model Content

[0005] The utility model aims to provide a special-shaped bolt and nut assembly, aiming to solve the problem in the prior art that the nut rotates in the opposite direction due to vibration or other factors, resulting in the nut loosening and affecting the tightness of the connection.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A special-shaped bolt and nut assembly, comprising:

[0008] Hexagonal nuts;

[0009] A screw rod, the screw rod being fixedly connected to the lower end of the hexagonal nut;

[0010] A hexagonal nut, wherein the hexagonal nut is threadedly connected to the circumferential surface of the screw;

[0011] A first notch, wherein the first notch is provided at one side end of the hexagonal nut;

[0012] A fixing rod, the fixing rod being fixedly connected to the proximal ends of the upper and lower inner walls of the first notch;

[0013] A spring, wherein the spring is sleeved on the circumferential surface of the fixing rod, and the spring is arranged at the proximal ends of the upper and lower inner walls of the first notch;

[0014] A clamping strip, the clamping strip being fixedly connected to the surface of the spring;

[0015] A limit slot, the limit slot being fixedly connected to one side end of the card strip;

[0016] A first limiting block, wherein the first limiting block is connected to a lower inner wall of the first notch;

[0017] A second limiting block, wherein the second limiting block is fixedly connected to the lower inner wall of the first notch.

[0018] As a preferred solution of the utility model, a second notch is provided on one side end of the hexagonal nut, a block groove is provided on the lower inner wall of the second notch, an elastic plate is fixedly connected to one side end of the first limit block, a block is fixedly connected to one side end of the elastic plate, and an iron sheet is fixedly connected to one side end of the block.

[0019] As a preferred solution of the utility model, a gasket is sleeved on the circumferential surface of the screw, and the material of the gasket is stainless steel.

[0020] As a preferred solution of the utility model, a square block is fixedly connected to the upper end of the gasket, and a square groove is formed at the lower end of the hexagonal nut.

[0021] As a preferred solution of the utility model, a thread tip is fixedly connected to the lower end of the screw, and the thread on the circumferential surface of the thread tip is not threadedly connected to the circumferential surface of the screw.

[0022] As a preferred solution of the utility model, a hexagonal groove is formed at the upper end of the hexagonal nut, and the material of the hexagonal groove is high-strength steel.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] 1. In this solution, when the screw rod is inserted into the hexagonal nut and twisted to the required distance, the spring in the first notch can drive the clamping strip to resist the screw rod when it is twisted to a certain extent on the circumferential surface of the fixed rod. The limiting groove at one end of the clamping strip clamps the thread on the circumferential surface of the screw rod, so that the hexagonal nut will not loosen due to reverse rotation due to vibration.

[0025] 2. In this solution, the card block can be retracted and released in the card block slot by the elastic characteristics of the elastic plate by the personnel lifting the iron sheet up and down at the same time. When the personnel lifts up, the card block will be brought out of the card block slot along with the elastic plate, and then the iron sheet can be pulled to drive the first limit block to move with it. The movement of the first limit block can make the card strip adjusted when taking out the hexagonal nut. This structure increases the flexibility of the component, and the hexagonal nut can be taken out without damaging the component, thereby increasing the repeated use of the component. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a main perspective view of the utility model;

[0028] Figure 2 It is the first cross-sectional view of the utility model;

[0029] Figure 3 It is a second cross-sectional view of the present utility model;

[0030] Figure 4 For the utility model Figure 3 The enlarged view of point A in the middle;

[0031] Figure 5 It is a second cross-sectional view of the utility model;

[0032] Figure 6 It is the third cross-sectional view of the utility model.

[0033] In the figure: 1. hexagonal nut; 2. screw rod; 3. hexagonal nut; 4. first notch; 5. fixing rod; 6. spring; 7. clamping strip; 8. limiting slot; 9. first limiting block; 10. second limiting block; 11. second notch; 12. clamping block slot; 13. elastic plate; 14. clamping block; 15. iron sheet; 16. gasket; 17. square block; 18. square slot; 19. thread tip; 20. hexagonal slot. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Example 1

[0036] See also Figure 1-Figure 6 , the utility model provides the following technical solutions:

[0037] A special-shaped bolt and nut assembly, comprising:

[0038] Hexagonal nut 1;

[0039] A screw rod 2, the screw rod 2 is fixedly connected to the lower end of the hexagonal nut 1;

[0040] A hexagonal nut 3, wherein the hexagonal nut 3 is threadedly connected to the circumferential surface of the screw rod 2;

[0041] A first notch 4, which is provided at one side end of the hexagonal nut 3;

[0042] A fixing rod 5, the fixing rod 5 is fixedly connected to the upper and lower inner walls of the first notch 4 at adjacent ends;

[0043] A spring 6, the spring 6 is sleeved on the circumferential surface of the fixing rod 5, and the spring 6 is arranged at the proximal ends of the upper and lower inner walls of the first notch 4;

[0044] A clamping strip 7, which is fixedly connected to the surface of the spring 6;

[0045] A limit slot 8, which is fixedly connected to one side end of the card strip 7;

[0046] A first limiting block 9, the first limiting block 9 is connected to the lower inner wall of the first notch 4;

[0047] The second limiting block 10 is fixedly connected to the lower inner wall of the first notch 4 .

[0048] In a specific embodiment of the present invention, a hexagonal nut 1 is used as the top interface of the component, which is convenient for disassembly or installation using tools such as wrenches. The screw rod 2 has threads on its circumferential surface for threaded connection with the hexagonal nut 3. The hexagonal nut 3 precisely engages with the screw rod 2 to achieve a tight threaded connection. When a person inserts the screw 2 into the hexagonal nut 3 and twists it to the required distance, the first notch 4 provides space for the installation of the internal structure, thereby increasing the functionality of the component. The fixing rod 5 provides a limit for the spring 6 so that the spring 6 rotates on its circumferential surface. The spring 6 and the clamping strip 7 are pressed against the upper and lower ends of the spring 6. The upper and lower inner walls of the first notch 4 are close to each other, and when twisted to a certain extent, the clamping strip 7 can be driven to press against the screw rod 2. The limiting clamping groove 8 has a shape that can clamp the thread on the circumferential surface of the screw rod 2, so that the hexagonal nut 3 will not loosen due to reverse rotation due to vibration. The first limiting block 9 is used to limit the rebound of the clamping strip 7 to ensure that the clamping strip 7 clamps the screw rod 2. The second limiting block 10 is used to limit the rebound of the clamping strip 7 to prevent the clamping strip 7 from popping out of the assembly. Through this structure, the screw rod 2 will not loosen due to reverse rotation due to vibration after being installed in the hexagonal nut 3, causing damage to the working equipment and endangering the safety of the staff.

[0049] For details, please refer to Figure 1-Figure 6 A second notch 11 is provided at one side end of the hexagonal nut 3, a block groove 12 is provided on the lower inner wall of the second notch 11, an elastic plate 13 is fixedly connected to one side end of the first limit block 9, a block 14 is fixedly connected to one side end of the elastic plate 13, and an iron sheet 15 is fixedly connected to one side end of the block 14.

[0050] In this embodiment: the second notch 11 provides space for the installation of the internal structure and increases the functionality of the component. The block groove 12 provides a limit for the block 14 to prevent the block 14 from falling off. The elastic plate 13, the block 14 and the iron sheet 15 are formed by a person moving the iron sheet 15 up and down so that the block 14 can be retracted in the block groove 12 through the elastic characteristics of the elastic plate 13. When the person moves up, the block 14 will be taken out of the block groove 12 with the elastic plate 13, and then the iron sheet 15 can be pulled to drive the first limit block 9 to move with it. The movement of the first limit block 9 can make the card strip 7 adjusted when taking out the hexagonal nut 3. This structure increases the flexibility of the component, and the hexagonal nut 3 can be taken out without damaging the component, thereby increasing the repeated use of the component.

[0051] For details, please refer to Figure 1-Figure 6 The circumferential surface of the screw rod 2 is sleeved with a gasket 16, and the material of the gasket 16 is stainless steel.

[0052] In this embodiment: the gasket 16 can provide the necessary sealing in applications requiring sealing to ensure the tightness of the connection. The gasket 16 is made of stainless steel, which can prevent the bolts and nuts from rusting due to contact with water and directly contacting the connected metal surface, thereby reducing corrosion.

[0053] For details, please refer to Figure 1-Figure 6 The upper end of the gasket 16 is fixedly connected with a square block 17, and the lower end of the hexagonal nut 1 is provided with a square groove 18.

[0054] In this embodiment: personnel engage the square block 17 at the upper end of the gasket 16 with the square groove 18 at the lower end of the hexagonal nut 1, which can effectively prevent the nut from rotating or falling off when affected by external force, greatly improving the vibration resistance and fastening reliability of the entire assembly.

[0055] For details, please refer to Figure 1-Figure 6 The lower end of the screw rod 2 is fixedly connected with a thread tip 19, and the thread on the circumferential surface of the thread tip 19 is not threadedly connected with the circumferential surface of the screw rod 2.

[0056] In this embodiment: the thread tip 19, its independent thread can adapt to the needs of specific application scenarios, such as being inserted into a pre-drilled hole first to facilitate the subsequent smooth screwing of the screw 2 in situations where alignment is difficult or guidance is required to penetrate multiple layers of materials, and then the hexagonal nut 3 is screwed into the thread on the surface of the screw 2. The thread of the thread tip 19 is not connected to the thread on the circumferential surface of the screw 2 to prevent the thread tip 19 from causing thread damage when screwing into high-strength materials, affecting the installation of the hexagonal nut 3.

[0057] For details, please refer to Figure 1-Figure 6 A hexagonal groove 20 is formed at the upper end of the hexagonal nut 1, and the material of the hexagonal groove 20 is high-strength steel.

[0058] In this embodiment: the hexagonal groove 20, in order to prevent the peripheral corners of the hexagonal nut 1 from being damaged due to improper operation by personnel, resulting in inability to install and disassemble, personnel can insert a hexagonal wrench into the hexagonal groove 20 for disassembly and installation. At the same time, the material of the hexagonal groove 20 is high-strength steel, which has good toughness and deformation resistance.

[0059] The working principle and use process of the utility model: through this component, the personnel engage the square block 17 at the upper end of the gasket 16 with the square groove 18 at the lower end of the hexagonal nut 1, and the screw rod 2 is inserted into the hexagonal nut 3. When it is twisted to the required distance, the spring 6 in the first notch 4 can drive the clamping strip 7 to resist the screw rod 2 when it is twisted to a certain extent on the circumferential surface of the fixing rod 5. The limiting clamping groove 8 at one side end of the clamping strip 7 clamps the thread on the circumferential surface of the screw rod 2, so that the hexagonal nut 3 will not loosen due to reverse rotation due to vibration. At the same time, the first limiting block 9 is used to limit the rebound of the clamping strip 7 , ensuring that the clamping strip 7 clamps the screw 2, and at the same time, the iron sheet 15 is lifted up and down by a person so that the clamping block 14 can be retracted and released in the clamping block groove 12 through the elastic characteristics of the elastic plate 13. When the person lifts up, the clamping block 14 will be brought out of the clamping block groove 12 along with the elastic plate 13, and then the iron sheet 15 can be pulled to drive the first limit block 9 to move with it. Through the movement of the first limit block 9, the clamping strip 7 can be adjusted when the hexagonal nut 3 is taken out. This structure increases the flexibility of the component, and the hexagonal nut 3 can be taken out without damaging the component, thereby increasing the repeated use of the component.

[0060] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A special-shaped bolt and nut assembly, characterized in that: include: Hexagonal nut (1); A screw rod (2), wherein the screw rod (2) is fixedly connected to the lower end of the hexagonal nut (1); A hexagonal nut (3), wherein the hexagonal nut (3) is threadedly connected to the circumferential surface of the screw rod (2); A first notch (4), wherein the first notch (4) is provided at one side end of the hexagonal nut (3); A fixing rod (5), the fixing rod (5) being fixedly connected to the proximal ends of the upper and lower inner walls of the first notch (4); A spring (6), wherein the spring (6) is sleeved on the circumferential surface of the fixing rod (5), and the spring (6) is arranged at the proximal ends of the upper and lower inner walls of the first notch (4); A clamping strip (7), wherein the clamping strip (7) is fixedly connected to the surface of the spring (6); A limit slot (8), wherein the limit slot (8) is fixedly connected to one side end of the clamping strip (7); A first limiting block (9), the first limiting block (9) being connected to the lower inner wall of the first notch (4); A second limiting block (10), wherein the second limiting block (10) is fixedly connected to the lower inner wall of the first notch (4).

2. A special-shaped bolt and nut assembly according to claim 1, characterized in that: A second notch (11) is provided at one end of the hexagonal nut (3), a clamping block groove (12) is provided on the lower inner wall of the second notch (11), an elastic plate (13) is fixedly connected to one end of the first limit block (9), a clamping block (14) is fixedly connected to one end of the elastic plate (13), and an iron sheet (15) is fixedly connected to one end of the clamping block (14).

3. A special-shaped bolt and nut assembly according to claim 2, characterized in that: A gasket (16) is sleeved on the circumferential surface of the screw rod (2), and the gasket (16) is made of stainless steel.

4. A special-shaped bolt and nut assembly according to claim 3, characterized in that: The upper end of the gasket (16) is fixedly connected with a square block (17), and the lower end of the hexagonal nut (1) is provided with a square groove (18).

5. A special-shaped bolt and nut assembly according to claim 4, characterized in that: The lower end of the screw rod (2) is fixedly connected with a thread tip (19), and the threads on the circumferential surface of the thread tip (19) are not threadedly connected with the circumferential surface of the screw rod (2).

6. A special-shaped bolt and nut assembly according to claim 5, characterized in that: A hexagonal groove (20) is formed at the upper end of the hexagonal nut (1), and the material of the hexagonal groove (20) is high-strength steel.

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