Bidirectional variable tooth type thread combined locknut

Abstract

The utility model discloses a bidirectional variable tooth type thread combined locknut, which belongs to the field of nuts and comprises a bottom ring, a lower nut is fixedly arranged at the upper end of the bottom ring, an upper nut is fixedly arranged at the upper end of the lower nut, and a plurality of friction teeth are arranged at the lower end of the bottom ring, so that the friction teeth can grasp a mounting surface when the bottom ring rotates anticlockwise. The friction block is arranged through the rubber ring, so that the upper end of the inner side of the upper nut is tightly attached to the surface of the connecting threaded column, rotation of the upper nut is avoided, rotation of the lower nut is avoided, and the anti-loosening effect is improved; lubricating oil can be conveniently injected into the inner side of the upper nut through the inclined hole and flows to the inner side of the lower nut through the upper nut, so that the inner sides of the upper nut and the lower nut are respectively lubricated, the lubricating effect is enhanced, and the situation that the inner sides of the upper nut and the lower nut rust to affect the assembling and disassembling work of the upper nut and the lower nut is avoided.

Description

Technical Field

[0001] The utility model relates to the field of nuts, and more specifically to a bidirectional variable tooth type thread combination anti-loosening nut. Background Art

[0002] A nut is a part that is screwed together with a bolt or screw for fastening. It is a component that must be used in all manufacturing machinery. According to the different materials, it is divided into several major types, such as carbon steel, stainless steel, non-ferrous metals (such as copper), etc.

[0003] For example, announcement No. CN212479876U discloses a combination anti-loosening nut with a bidirectional variable tooth thread, including a combination anti-loosening nut body, the combination anti-loosening nut body including a second nut and a first nut, the inner cavity at one end of the first nut is provided with a second mounting combination recess, one end of the second nut is provided with a mounting combination boss, the other end of the second nut is provided with a first mounting combination recess, the second mounting combination recess and the mounting combination boss fit together, the surface of the mounting combination boss is provided with a guide platform, the number of the guide platforms is four, and one end of the four guide platforms is provided with locking claws, the outer surfaces of the first nut and the second nut are provided with lubricating oil filling ports, the lubricating oil filling ports are provided with oil filling holes, and the end of the oil filling hole is provided with an oil inlet hole. The new scheme can improve the locking force and inject lubricating oil to increase lubrication when the screw is rusted and cannot be turned, so it is easy to use.

[0004] It can be seen from the above-mentioned public scheme that the lower end of the nut is currently mostly set to a flat surface, and the flat surface is tightly attached to the external installation object, so that the friction resistance of the contact surface is small, and the anti-slip property is poor. Due to the influence of vibration, the nut is easy to rotate, thereby affecting the stability of the installation, and the nut is easy to become loose and easily fall off the installation object. In addition, the nut is prone to rust during installation in some cases, which affects the loading and unloading of the nut. Utility Model Content

[0005] The utility model aims to provide a bidirectional variable tooth type thread combination anti-loosening nut to solve the problems of anti-loosening and assembly and disassembly of the nut.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a two-way variable tooth type thread combination anti-loosening nut, comprising a bottom ring, a lower nut is fixedly arranged on the upper end of the bottom ring, an upper nut is fixedly arranged on the upper end of the lower nut, a plurality of friction teeth are fixedly arranged on the lower end of the bottom ring, a lower thread is arranged inside the lower nut, an upper thread is arranged inside the upper nut, a rubber ring is fixedly arranged on the upper end of the upper nut, a plurality of friction blocks are fixedly arranged on the inner side of the rubber ring, an inclined hole is arranged on the left side of the upper nut, a blocking block is clamped inside the inclined hole, a plurality of friction teeth are arranged on the lower end of the bottom ring, and a plurality of friction blocks are clamped on the inner side of the bottom ring. When the screw is rotated counterclockwise, the friction teeth will catch the installation surface, thereby preventing the bottom ring from rotating counterclockwise, thereby playing an anti-loosening role. In addition, a friction block is set by a rubber ring, so that the inner upper end of the upper nut is tightly attached to the surface of the connecting threaded column to prevent the upper nut from rotating, thereby preventing the lower nut from rotating, and also increasing the anti-loosening effect. At the same time, through the setting of the inclined hole, it is convenient to inject lubricating oil into the inner side of the upper nut through the inclined hole. The lubricating oil flows through the upper nut to the inner side of the lower nut, thereby lubricating the inner sides of the upper nut and the lower nut respectively, thereby increasing the lubrication effect and preventing the inner sides of the upper nut and the lower nut from rusting and affecting the loading and unloading of the upper nut and the lower nut.

[0007] Preferably, the height of the lower nut is the same as that of the upper nut, and the inner diameter of the lower nut is the same as that of the upper nut.

[0008] Preferably, the height of the lower nut is greater than the height of the bottom ring, and the inner diameter of the bottom ring is the same as the inner diameter of the lower nut.

[0009] Preferably, the outer diameter of the bottom ring is greater than the outer diameter of the lower nut, and the length of the lower thread is greater than the length of the upper thread.

[0010] Preferably, the friction block is arranged inside the upper nut, and the thickness of the rubber ring is smaller than the thickness of the upper nut.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model arranges a plurality of friction teeth at the lower end of the bottom ring. When the bottom ring rotates counterclockwise, the friction teeth will grab the installation surface, thereby preventing the bottom ring from rotating counterclockwise, thereby playing an anti-loosening effect. In addition, a friction block is arranged by a rubber ring, so that the inner upper end of the upper nut is tightly attached to the surface of the connecting threaded column, preventing the upper nut from rotating, thereby preventing the lower nut from rotating, and also increasing the anti-loosening effect.

[0013] The utility model provides an inclined hole, which facilitates the injection of lubricating oil to the inner side of the upper nut through the inclined hole. The lubricating oil flows through the upper nut to the inner side of the lower nut, thereby lubricating the inner sides of the upper nut and the lower nut respectively, thereby increasing the lubrication effect and preventing the inner sides of the upper nut and the lower nut from rusting and affecting the loading and unloading of the upper nut and the lower nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 It is a partial cross-sectional view of the overall structure of the utility model;

[0016] Figure 3 It is a bottom view of the bottom ring of the utility model;

[0017] Figure 4 It is a top view of the upper nut of the utility model;

[0018] Figure 5 It is a top sectional view of the upper nut of the utility model.

[0019] Description of the numbers in the figure:

[0020] 1 bottom ring, 2 lower nut, 3 upper nut, 4 friction teeth, 5 lower thread, 6 upper thread, 7 rubber ring, 8 friction block, 9 oblique hole, 10 blocking block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model. Example

[0022] See also Figure 1-5 A bidirectional variable tooth type thread combination anti-loosening nut shown in the figure includes a bottom ring 1, a lower nut 2 is fixedly provided on the upper end of the bottom ring 1, an upper nut 3 is fixedly provided on the upper end of the lower nut 2, a plurality of friction teeth 4 are fixedly provided on the lower end of the bottom ring 1, a lower thread 5 is provided inside the lower nut 2, an upper thread 6 is provided inside the upper nut 3, a rubber ring 7 is fixedly provided on the upper end of the upper nut 3, a plurality of friction blocks 8 are fixedly provided on the inner side of the rubber ring 7, an inclined hole 9 is provided on the left side of the upper nut 3, and a blocking block 10 is clamped inside the inclined hole 9.

[0023] In order to prevent the nut from loosening, the height of the lower nut 2 is the same as that of the upper nut 3, the inner diameter of the lower nut 2 is the same as that of the upper nut 3, the height of the lower nut 2 is greater than the height of the bottom ring 1, the inner diameter of the bottom ring 1 is the same as that of the lower nut 2, the outer diameter of the bottom ring 1 is greater than the outer diameter of the lower nut 2, the length of the lower thread 5 is greater than the length of the upper thread 6, the friction block 8 is arranged inside the upper nut 3, and the thickness of the rubber ring 7 is less than the thickness of the upper nut 3.

[0024] In this embodiment, a plurality of friction teeth 4 are arranged at the lower end of the bottom ring 1. When the bottom ring 1 rotates counterclockwise, the friction teeth 4 will grab the mounting surface, thereby preventing the bottom ring 1 from rotating counterclockwise, thereby playing an anti-loosening role. In addition, a friction block 8 is arranged through the rubber ring 7, so that the inner upper end of the upper nut 3 is tightly attached to the surface of the connecting threaded column, thereby preventing the upper nut 3 from rotating, thereby preventing the lower nut 2 from rotating, and also increasing the anti-loosening effect. At the same time, through the arrangement of the inclined hole 9, it is convenient to inject lubricating oil into the inner side of the upper nut 3 through the inclined hole 9. The lubricating oil flows through the upper nut 3 to the inner side of the lower nut 2, thereby lubricating the inner sides of the upper nut 3 and the lower nut 2 respectively, thereby increasing the lubrication effect and preventing the inner sides of the upper nut 3 and the lower nut 2 from rusting and affecting the loading and unloading of the upper nut 3 and the lower nut 2.

[0025] After installation, the lower end of the friction tooth 4 is in close contact with the surface of the installation object. The friction tooth 4 is in close contact with the surface of the installation object to increase the friction force and the anti-skid effect. The friction block 8 is set by the rubber ring 7, so that the inner upper end of the upper nut 3 is in close contact with the surface of the connecting thread column to prevent the upper nut 3 from rotating. By removing the blocking block 10, it is convenient to inject lubricating oil into the interior of the inclined hole 9, so as to lubricate the inner sides of the upper nut 3 and the lower nut 2 respectively, increase the lubrication effect, and prevent the inner sides of the upper nut 3 and the lower nut 2 from rusting and affecting the loading and unloading work of the upper nut 3 and the lower nut 2.

[0026] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A bidirectional variable-thread combination anti-loosening nut, comprising a bottom ring (1), characterized in that: A lower nut (2) is fixedly provided at the upper end of the bottom ring (1), an upper nut (3) is fixedly provided at the upper end of the lower nut (2), a plurality of friction teeth (4) are fixedly provided at the lower end of the bottom ring (1), a lower thread (5) is provided inside the lower nut (2), an upper thread (6) is provided inside the upper nut (3), a rubber ring (7) is fixedly provided at the upper end of the interior of the upper nut (3), a plurality of friction blocks (8) are fixedly provided inside the rubber ring (7), an inclined hole (9) is provided on the left side of the upper nut (3), and a blocking block (10) is clamped inside the inclined hole (9).

2. A bidirectional variable thread combination anti-loosening nut according to claim 1, characterized in that: The height of the lower nut (2) is the same as that of the upper nut (3), and the inner diameter of the lower nut (2) is the same as that of the upper nut (3).

3. A bidirectional variable thread combination anti-loosening nut according to claim 1, characterized in that: The height of the lower nut (2) is greater than the height of the bottom ring (1), and the inner diameter of the bottom ring (1) is the same as the inner diameter of the lower nut (2).

4. A bidirectional variable thread combination anti-loosening nut according to claim 1, characterized in that: The outer diameter of the bottom ring (1) is greater than the outer diameter of the lower nut (2), and the length of the lower thread (5) is greater than the length of the upper thread (6).

5. The bidirectional variable thread combination anti-loosening nut according to claim 1, characterized in that: The friction block (8) is arranged inside the upper nut (3), and the thickness of the rubber ring (7) is smaller than the thickness of the upper nut (3).

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