Lock nut

Abstract

The utility model provides a nut of preventing loosening belongs to nut technical field. Including installation component, the bolt is passed in installation component inside, the bolt screw thread connection nut, the nut one end inlay is in installation component inside to form the joint limit cooperation. Through setting the recess on the installation component, and setting the protruding portion at one end of the nut, the end of protruding portion sets up the cross groove, twists the nut on the bolt and will protruding portion extend to the recess inside, through the fastening of nut, the cross groove part carries out the shrinkage, and the bolt is nipped tightly. Further prevent the installation component vibration process to cause the nut rotation to fall off.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, and more specifically, to an anti-loosening nut. Background Technology

[0002] In the current field of steel structure engineering, fastening bolts are core connecting components, and their stability is directly related to the safety performance of the overall structure. However, most existing steel structure fastening bolts generally lack effective anti-loosening designs, and their connection reliability mainly relies on the friction of the thread pair. In industrial equipment and other environments that are in a state of constant vibration, the continuous vibration load will gradually weaken the preload between the threads, causing the bolts to gradually loosen. Most components need to be tightened after a period of operation to prevent loosening. Once loosening occurs, it may cause the gap between components to wobble, or even cause connection failure, thereby affecting the overall stability of the steel structure and posing a safety hazard. Utility Model Content

[0003] To overcome the above deficiencies, this utility model provides an anti-loosening nut that overcomes or at least partially solves the above technical problems.

[0004] This utility model is implemented as follows:

[0005] This utility model provides an anti-loosening nut, including a mounting component, a bolt passing through the mounting component, the bolt being threadedly connected to the nut, and one end of the nut being embedded inside the mounting component to form a snap-fit ​​limiting fit.

[0006] In a preferred embodiment, the mounting member has a groove on the side surface facing the nut, and the outer side of the nut has a protrusion that fits into the groove.

[0007] In a preferred embodiment, the outer surface of the protrusion is provided with a cross groove, and the width of the cross groove is set to 1 mm.

[0008] In a preferred embodiment, the inner wall of the groove is configured to slope outwards.

[0009] In a preferred embodiment, the sides of the protrusion are inclined inward.

[0010] In a preferred embodiment, the bolts are constructed of steel.

[0011] The advantages of the anti-loosening nut provided by this utility model include:

[0012] By creating a groove on the mounting component and a protrusion at one end of the nut, with a cross groove at the end of the protrusion, the nut is screwed onto the bolt, and the protrusion extends into the groove. As the nut is tightened, the cross groove contracts, effectively locking the bolt in place. This prevents the nut from rotating and falling off during vibrations of the mounting component. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a perspective view provided by an embodiment of the present utility model;

[0015] Figure 2 This is an exploded view of the installation components and nuts of this utility model;

[0016] Figure 3 This is a schematic diagram of the protrusion structure of this utility model.

[0017] In the diagram: 1. Mounting component; 2. Bolt; 3. Nut; 4. Groove; 5. Protrusion; 6. Cross groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example

[0020] Reference Figures 1-3 This utility model provides a technical solution: an anti-loosening nut, including a mounting component 1. The mounting component 1 is a rigid structure with a certain thickness. The mounting component 1 has a positioning hole for a bolt 2 to pass through along its thickness direction. The positioning hole penetrates the interior of the mounting component 1. The inner diameter of the positioning hole is adapted to the diameter of the bolt 2. The bolt 2 passes through the interior of the mounting component 1. The bolt 2 is threadedly connected to the nut 3. The nut 3 is installed on the outer side of the mounting component 1. One end of the nut 3 is embedded inside the mounting component 1 and forms a snap-fit ​​limiting fit.

[0021] In a preferred embodiment, the mounting member 1 has a groove 4 on the side surface facing the nut 3, and a protrusion 5 is provided on the outer side of the nut 3. The protrusion 5 and the groove 4 are fitted together. The mounting member 1 has two surfaces, one of which is used to abut against the head of the bolt 2, and the other surface faces the nut 3 and is abutted against by the nut 3 to position the mounting member 1. The device has a protrusion 5 at one end of the nut 3. The outer wall of the protrusion 5 is slidably connected to the inner wall of the groove 4. When the nut 3 is rotated continuously, the protrusion 5 will gradually approach the position of the groove 4 as the nut 3 rotates, until the protrusion 5 enters the interior of the groove 4.

[0022] The height of the protrusion 5 is matched with the depth of the groove 4, ensuring that the protrusion 5 can be fully inserted into the interior of the groove 4, and the end of the protrusion 5 is tightly fitted with the inner bottom of the groove 4.

[0023] In a preferred embodiment, a cross groove 6 is provided on the outer surface of the protrusion 5. The width of the cross groove is set to 1 mm. The outer surface of the protrusion 5 is ground to ensure flatness. The cross groove 6 is provided on the outer surface of the protrusion 5 in both radial and axial directions. The cross groove 6 penetrates the inner side surface of the protrusion 5. The depth of the cross groove 6 is set to one-third of the thickness of the protrusion 5, and the edge of the groove is rounded.

[0024] In a preferred embodiment, the inner wall of the groove 4 is set to be inclined outward, the groove 4 is set to be annular, and the inclination of the inner wall of the groove 4 is set to be 10°-15°. The groove opening width of the groove 4 is greater than the groove bottom width. Correspondingly, the side of the protrusion 5 is inclined inward, and the outer wall of the protrusion 5 is provided with an inclined surface adapted to the inner wall of the groove 4. The inclination angle of the protrusion 5 is consistent with the inclination angle of the inner wall of the groove 4. When the protrusion 5 moves into the groove 4, the outer wall of the protrusion 5 is completely in contact with the inner wall of the groove 4.

[0025] Bolt 2 is made of steel structure, and the head of bolt 2 is made of hexagonal head structure. Its end face is provided with anti-slip texture to match the wrench. The thread accuracy of the screw section is 6g grade, the pitch is 1.5mm-3mm, and the end of the thread is treated with arc transition.

[0026] Specifically, the working process or working principle of the anti-loosening nut is as follows:

[0027] To prevent the nut 3 from rotating and falling off due to vibration during later use, this device will first open a groove 4 around the pre-reserved positioning hole on the mounting component 1 before installing the bolt 2. Since the inner wall of the groove 4 is set to be inclined outward, this design allows the protrusion 5 on the nut 3 to smoothly enter the groove 4.

[0028] When using this device, the bolt 2 is inserted into the pre-drilled positioning hole on the mounting component 1. One end of the bolt 2 will pass through the pre-drilled positioning hole, and the nut 3 is screwed onto the bolt 2 at the position where it passes through the positioning hole to fasten the mounting component 1.

[0029] By continuously tightening the nut 3, the cross groove 6 on the end face of the protrusion 5 shrinks, thus tightening the bolt 2 and preventing the nut 3 from rotating and falling off during the vibration of the mounting component 1, making it easy to use.

Claims

1. An anti-loosening nut, comprising a mounting component (1), characterized in that, The mounting component (1) is provided with a bolt (2) inside, and the bolt (2) is threadedly connected to a nut (3). One end of the nut (3) is embedded inside the mounting component (1) and forms a snap-fit ​​limiting fit.

2. The anti-loosening nut according to claim 1, characterized in that, The mounting component (1) has a groove (4) on one side of the surface facing the nut (3), and the outer side of the nut (3) has a protrusion (5), which fits into the groove (4).

3. The anti-loosening nut according to claim 2, characterized in that, The outer surface of the protrusion (5) is provided with a cross groove (6), and the groove width of the cross groove (6) is set to 1 mm.

4. The anti-loosening nut according to claim 3, characterized in that, The inner wall of the groove (4) is set to be inclined outward.

5. The anti-loosening nut according to claim 4, characterized in that, The protrusion (5) is inclined inward on its side.

6. The anti-loosening nut according to claim 5, characterized in that, The bolt (2) is made of steel.

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