Hexagonal flange nut capable of improving pre-tightening force

Abstract

The utility model relates to the technical field of hexagonal flange nuts, and discloses a hexagonal flange nut capable of improving pre-tightening force, which comprises a hexagonal flange nut body, and a pre-tightening end of a pre-tightening mechanism is arranged below the hexagonal flange nut body. The hexagonal flange nut is installed on an external connecting piece through the hexagonal flange nut body, when the hexagonal flange nut body is screwed down, the anti-skid stripes on the installation disc abut against the surface of the external connecting piece, the friction force between the anti-skid stripes and the installation surface is increased, and the anti-skid pressing blocks and the external connecting surface are extruded during abutting. The antiskid pressing blocks drive the sliding blocks to extrude the springs to slide in the sliding grooves, after the hexagonal flange nut body is installed and screwed down, the springs provide counter-acting force for the antiskid pressing blocks to push the antiskid pressing blocks, the antiskid pressing blocks apply extrusion force to the face of an external connecting piece, the antiskid pressing blocks can be tightly pressed on the installation face under the action of spring force, and therefore the hexagonal flange nut body is installed and screwed down. The pre-tightening force can be effectively improved, so that the connection is firmer, and the possibility of loosening is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of hexagonal flange nuts, specifically hexagonal flange nuts that can improve preload. Background Technology

[0002] A hexagonal flange nut has a flange face fixed to one end of the nut body and a cap fixed to the other end. The flange face comes in two types: with anti-slip teeth and smooth. The flange face with anti-slip teeth increases the surface area of ​​contact between the nut and the workpiece, making it more secure and able to withstand greater tensile force compared to a regular nut with a washer.

[0003] Traditional hexagonal flange nuts rely primarily on the initial friction between the nut and the surface of the connecting parts to maintain preload after tightening. However, in practical applications, this initial friction is often limited. In some vibration environments, such as during the operation of a car engine, the connections between various engine components are constantly subjected to vibration and impact. Due to insufficient preload, traditional hexagonal flange nuts are prone to gradually loosening under vibration, affecting the normal operation of the engine and potentially causing serious problems such as component detachment. Utility Model Content

[0004] The purpose of this invention is to improve the preload of hexagonal flange nuts, thereby solving the problem that traditional hexagonal flange nuts, due to insufficient preload, are prone to gradually loosening under vibration, affecting the normal operation of the engine, and may even cause parts to fall off.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a hexagonal flange nut that can improve the preload force, including a hexagonal flange nut body. The lower surface of the hexagonal flange nut body is provided with a threaded groove. A preload mechanism is threadedly connected inside the threaded groove. The preload end of the preload mechanism is located below the hexagonal flange nut body.

[0007] Furthermore, the pre-tightening mechanism includes a mounting plate, on one side of which a threaded tube is fixedly mounted, the threaded tube being internally threaded to the threaded groove, and the other side of the mounting plate having several anti-slip stripes.

[0008] Furthermore, the mounting plate has an internal mounting groove, and the mounting groove has a plurality of sliding grooves inside.

[0009] Furthermore, the inner surface of the mounting plate is provided with an internal hexagonal disassembly port.

[0010] Furthermore, a spring is fixedly installed inside the mounting groove, and an anti-slip pressure block is fixedly installed at one end of the spring.

[0011] Furthermore, several sliders are fixedly installed on the peripheral side of the anti-slip block, and all sliders are slidably connected to the inside of the groove.

[0012] This utility model has the following beneficial effects:

[0013] (1) This utility model installs the hexagonal flange nut body on the external connector. When the hexagonal flange nut body is tightened, the anti-slip stripes on the mounting plate abut against the surface of the external connector, increasing the friction between the mounting surface and the external connector. At the same time, the anti-slip pressure block and the surface of the external connector are squeezed together. The anti-slip pressure block drives the slider to squeeze the spring inside the groove. After the hexagonal flange nut body is installed and tightened, the spring provides a reaction force to the anti-slip pressure block and pushes the anti-slip pressure block. The anti-slip pressure block applies a squeezing force to the surface of the external connector. The anti-slip pressure block will be pressed tightly against the mounting surface under the action of the spring force, which can effectively increase the preload, thereby making the connection more secure and reducing the possibility of loosening.

[0014] (2) In this utility model, the threaded tube on the pre-tightening mechanism is installed into the inside of the threaded groove, and then the internal hex wrench is inserted into the inside of the internal hex disassembly port. Then, it is turned so that the threaded tube is tightened inside the threaded groove, thus completing the fixed installation between the hexagonal flange nut body and the pre-tightening mechanism. When the anti-slip stripe is damaged, the mounting plate can be disassembled by reversing the above operation, so that the pre-tightening mechanism can be replaced separately, thus reducing the cost of use.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0017] Figure 1 This is a schematic diagram showing the overall structure of this utility model disassembled;

[0018] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0020] Figure 4 This is a schematic diagram showing the overall structure of this utility model disassembled;

[0021] The attached diagram lists the components represented by each number as follows:

[0022] In the diagram: 1. Hexagonal flange nut body; 101. Threaded groove; 2. Preload mechanism; 201. Mounting plate; 202. Threaded pipe; 203. Anti-slip stripe; 204. Mounting groove; 205. Slide groove; 206. Internal hexagonal disassembly port; 207. Spring; 208. Anti-slip pressure block; 209. Slider. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 As shown, this utility model is a hexagonal flange nut that can improve the preload force, including a hexagonal flange nut body 1. A threaded groove 101 is provided on the lower surface of the hexagonal flange nut body 1. A preload mechanism 2 is threadedly connected inside the threaded groove 101. The preload end of the preload mechanism 2 is located below the hexagonal flange nut body 1.

[0025] The pre-tightening mechanism 2 includes a mounting plate 201. A threaded tube 202 is fixedly installed on one side of the mounting plate 201. The threaded tube 202 is internally threaded to the threaded groove 101. Several anti-slip stripes 203 are provided on the other side of the mounting plate 201.

[0026] Install the threaded tube 202 on the pre-tightening mechanism 2 into the inside of the threaded groove 101, and then insert an Allen wrench into the inside of the Allen disassembly port 206. Tighten the wrench to tighten the threaded tube 202 into the inside of the threaded groove 101. This completes the fixed installation between the hexagonal flange nut body 1 and the pre-tightening mechanism 2. When the anti-slip stripe 203 is damaged, the mounting plate 201 can be disassembled by reversing the above operation, so that the pre-tightening mechanism 2 can be replaced separately, thus reducing the cost of use.

[0027] The mounting plate 201 has a mounting groove 204 inside, and the mounting groove 204 has a plurality of sliding grooves 205 inside;

[0028] The inner surface of the mounting plate 201 is provided with an internal hexagonal disassembly port 206;

[0029] A spring 207 is fixedly installed inside the mounting slot 204, and an anti-slip pressure block 208 is fixedly installed at one end of the spring 207.

[0030] Several sliders 209 are fixedly installed on the periphery of the anti-slip pressure block 208, and the sliders 209 are all slidably connected to the inside of the slide groove 205.

[0031] By installing the hexagonal flange nut body 1 onto the external connector, when tightening the hexagonal flange nut body 1, the anti-slip stripes 203 on the mounting plate 201 abut against the surface of the external connector, increasing the friction between the mounting surface and the surface. At the same time, the anti-slip pressure block 208 presses against the surface of the external connector. The anti-slip pressure block 208 drives the slider 209 to slide within the groove 205, compressing the spring 207. After the hexagonal flange nut body 1 is installed and tightened, the spring 207 provides a reaction force to the anti-slip pressure block 208, pushing the anti-slip pressure block 208. The anti-slip pressure block 208 applies a compressive force to the surface of the external connector. Under the action of the spring force, the anti-slip pressure block 208 is pressed tightly against the mounting surface, which can effectively increase the preload, thereby making the connection more secure and reducing the possibility of loosening.

[0032] In use, first install the threaded tube 202 on the pre-tightening mechanism 2 into the inside of the threaded groove 101, then insert the Allen wrench into the inside of the Allen disassembly port 206, and then tighten it to tighten the threaded tube 202 into the inside of the threaded groove 101. This completes the fixed installation between the hexagonal flange nut body 1 and the pre-tightening mechanism 2. When the anti-slip stripe 203 is damaged, the mounting plate 201 can be disassembled by reversing the above operation, so that the pre-tightening mechanism 2 can be replaced separately, thus reducing the cost of use.

[0033] By installing the hexagonal flange nut body 1 onto the external connector, when tightening the hexagonal flange nut body 1, the anti-slip stripes 203 on the mounting plate 201 abut against the surface of the external connector, increasing the friction between the mounting surface and the surface. At the same time, the anti-slip pressure block 208 presses against the surface of the external connector. The anti-slip pressure block 208 drives the slider 209 to slide within the groove 205, compressing the spring 207. After the hexagonal flange nut body 1 is installed and tightened, the spring 207 provides a reaction force to the anti-slip pressure block 208, pushing the anti-slip pressure block 208. The anti-slip pressure block 208 applies a compressive force to the surface of the external connector. Under the action of the spring force, the anti-slip pressure block 208 is pressed tightly against the mounting surface, which can effectively increase the preload, thereby making the connection more secure and reducing the possibility of loosening.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A hexagonal flange nut that can improve preload, comprising a hexagonal flange nut body (1), characterized in that: The lower surface of the hexagonal flange nut body (1) is provided with a threaded groove (101), and a pre-tightening mechanism (2) is threadedly connected inside the threaded groove (101). The pre-tightening end of the pre-tightening mechanism (2) is located below the hexagonal flange nut body (1).

2. The hexagonal flange nut with improved preload according to claim 1, characterized in that: The pre-tightening mechanism (2) includes a mounting plate (201), on one side of which a threaded tube (202) is fixedly installed. The threaded tube (202) is internally threaded to the threaded groove (101), and a number of anti-slip stripes (203) are provided on the other side of the mounting plate (201).

3. The hexagonal flange nut with improved preload according to claim 2, characterized in that: The mounting plate (201) has an internal mounting groove (204), and the mounting groove (204) has a plurality of sliding grooves (205).

4. The hexagonal flange nut with improved preload according to claim 2, characterized in that: The inner surface of the mounting plate (201) is provided with an internal hexagonal disassembly port (206).

5. The hexagonal flange nut with improved preload according to claim 3, characterized in that: A spring (207) is fixedly installed inside the mounting groove (204), and an anti-slip pressure block (208) is fixedly installed at one end of the spring (207).

6. The hexagonal flange nut with improved preload according to claim 5, characterized in that: The anti-slip block (208) has several sliders (209) fixedly installed on its peripheral side, and the sliders (209) are all slidably connected to the inside of the groove (205).

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