Anti-loosening hexagonal self-locking nut

Abstract

The utility model relates to the technical field of nuts, in particular to an anti-loosening hexagonal self-locking nut which comprises a nut body, a reserved groove is formed in a screw hole of the nut body, a rubber ring is fixed in the reserved groove, the rubber ring protrudes out of the reserved groove, an edge groove is formed in the surface of the nut body, and a clamping handle is connected to the surface of the edge groove in an inserted mode. One end of the clamping handle is fixed on the surface of the rubber ring, the surface of the edge groove is rotationally connected with a stop block, and the stop block extrudes and pushes the clamping handle to extend into a screw hole of the nut; the nut has the advantages that the reserved groove is formed in the screw hole of the nut, the rubber ring is embedded in the reserved groove, and after the nut is connected to the screw in a sleeving and threaded mode, the rubber ring is clamped between the screw hole of the nut and the screw, so that the screwing tightness of the nut and the screw is improved.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, specifically to a hexagonal self-locking nut that prevents loosening. Background Technology

[0002] In mechanical assembly and engineering applications, the connection between nuts and screws is a common and important fastening method. However, in actual use, due to various factors such as vibrations generated during equipment operation, thermal expansion and contraction caused by temperature changes, and stress relaxation caused by load changes, nuts can easily loosen from screws, leading to equipment failure, safety accidents, or even significant economic losses.

[0003] Traditional nuts typically rely solely on the friction between the threads to achieve self-locking and prevent loosening. This single anti-loosening mechanism proves inadequate when faced with complex and variable working conditions. For example, under long-term vibration, the friction between the threads gradually decreases, increasing the relative movement between the nut and the screw, eventually leading to the nut loosening. In some critical equipment where extremely tightness requirements are placed and no signs of loosening are permissible, the anti-loosening performance of traditional nuts is insufficient to meet actual needs.

[0004] To address the insufficient anti-loosening performance of traditional nuts, while some anti-loosening nuts exist on the market, most suffer from drawbacks such as complex structure, inconvenient installation, high cost, or unsatisfactory anti-loosening effect. For example, some anti-loosening nuts require special tools for installation and removal, increasing operational difficulty and cost; others, while improving anti-loosening capabilities to some extent, experience a gradual decline in their anti-loosening performance over long-term use, failing to guarantee long-term connection stability.

[0005] Therefore, developing a new type of nut that is simple in structure, easy to install, moderately priced, and has a significant anti-loosening effect is of great practical significance. Utility Model Content

[0006] The purpose of this invention is to provide a hexagonal self-locking nut that prevents loosening, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a hexagonal self-locking nut for preventing loosening, comprising a nut, a reserved groove in the screw hole of the nut, a rubber ring fixed inside the reserved groove, the rubber ring protruding from the reserved groove, a side groove on the surface of the nut, a clamping handle inserted into the surface of the side groove, one end of the clamping handle being fixed to the surface of the rubber ring, and a stop block being rotatably connected to the surface of the side groove, the stop block pushing the clamping handle into the screw hole of the nut.

[0008] Preferably, the reserved groove is an annular groove, which divides the screw hole of the nut into two sections, and the rubber ring has a U-shaped annular structure.

[0009] Preferably, there are two side grooves, which are symmetrically distributed about the nut. The surface of the side groove is provided with a socket, which connects the side groove and the reserved groove. The clamping handle is inserted into the socket.

[0010] Preferably, a push handle is fixed at the end of the clamping handle away from the rubber ring. The push handle has a frustum structure, and the stop block pushes the push handle to limit the clamping handle.

[0011] Preferably, the surface of the stop block has a through hole, and a limiting shaft is inserted into the through hole. The limiting shaft is a "T"-shaped cylinder, and one end of the limiting shaft is fixed to the surface of the side groove.

[0012] Preferably, one end of the stop block has a notch, and a rubber strip is fixed to the surface of the notch. The rubber strip is clamped between the stop block and the side groove to produce elastic deformation.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model proposes a hexagonal self-locking nut with anti-loosening features. A pre-drilled groove is created in the nut's threaded hole, and a rubber ring is embedded within it. When the nut is screwed onto the screw rod, the rubber ring clamps between the nut's threaded hole and the screw rod, increasing the tightness of the connection. Simultaneously, a clamping structure composed of side grooves, a clamping handle, a push handle, and a stop block allows for precise installation. By rotating the stop block until it no longer obstructs the push handle, and then screwing the nut onto the screw rod, the stop block is pushed back. The stop block pushes the push handle along its slope, causing the clamping handle to retract into the socket and clamp the screw rod. The rubber ring, clamped between the clamping handle and the screw rod, further increases friction between them. This dual anti-loosening mechanism significantly improves the nut's anti-loosening effect on the screw rod, effectively resisting loosening caused by vibration, stress relaxation, and other factors. This ensures the long-term stability of the nut-screw connection and reduces the risk of equipment failure and safety accidents. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a top view of the structure of this utility model;

[0017] Figure 3 for Figure 2 Sectional view of the structure at point AA;

[0018] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 5 This is a schematic diagram of the connection structure between the clamping handle and the push handle of this utility model.

[0020] In the diagram: 1. Nut; 2. Reserved groove; 3. Side groove; 4. Insert; 5. Rubber ring; 6. Clamping handle; 7. Push handle; 8. Stop block; 9. Through hole; 10. Limiting shaft; 11. Notched groove; 12. Rubber strip. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit 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.

[0022] Please see Figures 1 to 5 This utility model provides a technical solution: a hexagonal self-locking nut for preventing loosening, comprising a nut 1, a pre-reserved groove 2 in the screw hole of the nut 1, a rubber ring 5 fixed inside the pre-reserved groove 2, the rubber ring 5 protruding from the pre-reserved groove 2, the pre-reserved groove 2 being an annular groove, the pre-reserved groove 2 dividing the screw hole of the nut 1 into two sections, and the rubber ring 5 having a U-shaped cross-section. After the rubber ring 5 is embedded in the screw hole of the nut 1, when the nut 1 is screwed onto the screw rod, the rubber ring 5 is clamped between the screw hole of the nut 1 and the screw rod, increasing the tightness of the screw connection between the nut 1 and the screw rod, thereby improving the anti-loosening effect of the nut 1 on the screw rod.

[0023] The surface of nut 1 has a side groove 3, and a clamping handle 6 is inserted into the surface of the side groove 3. One end of the clamping handle 6 is fixed to the surface of the rubber ring 5, and a stop block 8 is rotatably connected to the surface of the side groove 3. The stop block 8 pushes the clamping handle 6 into the threaded hole of nut 1. There are two side grooves 3, which are symmetrically distributed about nut 1. The surface of the side groove 3 has a socket 4, which connects the side groove 3 and the reserved groove 2. The clamping handle 6 is inserted into the socket 4. The clamping handle 6 is away from the rubber ring 5. One end of the ring 5 is fixed with a push handle 7, which is a frustum structure. The stop block 8 pushes the push handle 7 to limit the clamping handle 6. The surface of the stop block 8 is provided with a through hole 9, and a limiting shaft 10 is inserted into the through hole 9. The limiting shaft 10 is a "T"-shaped cylinder, and one end of the limiting shaft 10 is fixed to the surface of the side groove 3. One end of the stop block 8 is provided with a notch 11, and a rubber strip 12 is fixed to the surface of the notch 11. The rubber strip 12 is clamped between the stop block 8 and the side groove 3 and undergoes elastic deformation. When installing nut 1, rotate stop 8 around limit shaft 10 until stop 8 no longer obstructs push handle 7. Then, screw nut 1 onto screw rod. Push stop 8 back along the slope of push handle 7 to push push handle 7. Push handle 7 pushes clamping handle 6 into insertion port 4, and clamping handle 6 clamps screw rod. Rubber ring 5 is clamped between clamping handle 6 and screw rod to increase friction between clamping handle 6 and screw rod. At this time, stop 8 blocks one side of insertion port 4 to prevent clamping handle 6 from retracting, thus forming a clamping structure between nut 1 and screw rod, improving the anti-loosening effect of nut 1.

[0024] The method of using this anti-loosening hexagonal self-locking nut is as follows: Manually move the stop block 8 to rotate it around the limiting shaft 10 until the stop block 8 no longer obstructs the push handle 7. During this process, due to the elastic deformation of the rubber strip 12 clamped between the stop block 8 and the side groove 3, the rotation of the stop block 8 overcomes the elastic resistance of the rubber strip 12. Place the nut 1 onto the screw and begin the screwing operation, allowing the nut 1 to rotate forward along the screw until it reaches the appropriate position. After screwing, manually move the stop block 8 back, allowing it to rotate along the slope of the push handle 7. During the rotation of the stop block 8, it gradually pushes the push handle 7, which in turn pushes the clamping handle 6, causing it to retract along the insertion port 4 into the screw hole of the nut 1. After retraction, the clamping handle 6 clamps the screw, and simultaneously, the rubber ring 5 clamps between the clamping handle 6 and the screw, increasing the friction between them. When the stop block 8 rotates to block one side of the socket 4, it limits the movement of the clamping handle 6, preventing it from retracting. At this point, a clamping structure consisting of the clamping handle 6, the rubber ring 5, and the screw is formed between the nut 1 and the screw. This clamping structure, created through the above installation process, significantly increases the tightness between the nut 1 and the screw, effectively improving the anti-loosening effect of the nut 1 on the screw and ensuring the stability and reliability of the connection between the nut 1 and the screw.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-locking hexagonal nut against loosening, comprising a nut (1), characterized in that: The nut (1) is provided with a reserved groove (2) in the screw hole, the rubber ring (5) is fixed in the reserved groove (2), the rubber ring (5) protrudes from the reserved groove (2), the surface of the nut (1) is provided with a side groove (3), the side groove (3) is inserted with a clamping handle (6), one end of the clamping handle (6) is fixed on the surface of the rubber ring (5), and the surface of the side groove (3) is rotatably connected with a stop block (8), and the stop block (8) pushes the clamping handle (6) to extend into the screw hole of the nut (1).

2. The self-locking hexagonal nut according to claim 1, wherein: The reserved groove (2) is an annular groove, the reserved groove (2) divides the screw hole of the nut (1) into two sections, and the rubber ring (5) is a circular ring structure with a "U" shaped cross section.

3. A self-locking hexagonal nut according to claim 2, characterized in that: The side groove (3) is provided with two, the two side grooves (3) are symmetrically distributed about the nut (1), the surface of the side groove (3) is provided with a socket (4), the socket (4) is communicated with the side groove (3) and the reserved groove (2), and the clamping handle (6) is inserted into the socket (4).

4. The self-locking hexagonal nut as claimed in claim 1, wherein: The clamping handle (6) is provided with a push handle (7) fixed on the end away from the rubber ring (5), the push handle (7) is a circular truncated cone structure, and the stop block (8) pushes the push handle (7) to limit the clamping handle (6).

5. The self-locking hexagonal nut as claimed in claim 1, wherein: The surface of the stop block (8) is provided with a through hole (9), the through hole (9) is inserted with a limiting shaft (10) inside, the limiting shaft (10) is a "T" shaped cylinder, and one end of the limiting shaft (10) is fixed on the surface of the side groove (3).

6. The self-locking hexagonal nut as claimed in claim 1, wherein: One end of the stop block (8) is provided with a notch (11), the surface of the notch (11) is fixed with a rubber strip (12), and the rubber strip (12) is clamped between the stop block (8) and the side groove (3) to produce elastic deformation.

Images