Anti-loosening nut structure

Abstract

The utility model relates to an anti-loosening nut structure which comprises a nut body, a threaded hole is formed in the nut body in a penetrating mode, an anti-loosening assembly is arranged on the outer side of the nut body, and the anti-loosening assembly comprises a transverse sliding groove which is formed in the outer side of the nut body and communicated with the threaded hole. A vertical sliding groove communicated with the transverse sliding groove is formed in the upper end of the nut body, a stop block transversely slides in the transverse sliding groove, a driving block vertically slides in the vertical sliding groove, the upper end of the driving block protrudes out of the vertical sliding groove, and a transmission structure is connected between the lower end of the driving block and the stop block in a matched mode. The stop block is radially cut into the threads to form blocking, compared with a traditional friction anti-loosening mode, relative slippage of a thread pair caused by high-frequency micro-amplitude vibration can be effectively resisted, and the anti-loosening efficiency is remarkably improved; the anti-loosening assembly is embedded in the nut body, the transverse sliding groove and the vertical sliding groove form a compact linkage space, the thickness is greatly reduced compared with a double-nut structure, and the anti-loosening nut is particularly suitable for assembly of precision equipment with the limited space.

Description

Technical Field

[0001] This utility model relates to the field of fastener technology, and in particular to an anti-loosening nut structure. Background Technology

[0002] Nuts, as basic fasteners, are widely used in mechanical assembly. However, traditional nuts are prone to loosening and failure under long-term vibration, impact, or alternating load conditions, leading to decreased stability of the connection structure and even safety accidents. Existing anti-loosening technologies have significant limitations: spring washers rely on frictional force generated by elastic deformation for anti-loosening, but are prone to stress relaxation under high temperatures or continuous vibration; while double-nut stacking schemes can improve locking force, they significantly increase installation space and weight, making it difficult to meet lightweight requirements. Although complex structures such as hydraulic locking or electromagnetic locking offer higher reliability, they are expensive to manufacture and difficult to maintain.

[0003] Therefore, there is an urgent need for a compact and adaptable mechanical anti-loosening solution. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes an anti-loosening nut structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An anti-loosening nut structure includes a nut body with a threaded hole. An anti-loosening component is provided on the nut body. The anti-loosening component includes a transverse sliding groove disposed on the outside of the nut body and communicating with the threaded hole. A vertical sliding groove is provided at the upper end of the nut body and communicating with the transverse sliding groove. A stop block slides laterally in the transverse sliding groove. A drive block slides vertically in the vertical sliding groove. The upper end of the drive block protrudes outside the vertical sliding groove, and a transmission structure is engaged with the lower end of the drive block and the stop block. When the drive block moves downward, the stop block can be driven to extend into the threaded hole through the transmission structure.

[0007] In some embodiments, a rubber pad is provided at one end of the stop block that extends into the threaded hole.

[0008] In some embodiments, the transmission structure includes a guide ramp provided on the upper side of the outer end of the stop block, and the lower end of the drive block is provided with a rounded corner for abutting against the guide ramp.

[0009] In some embodiments, a limit hook is provided at the lower end of the drive block and on the side away from the rounded corner. The limit hook is attached to the transverse slide groove and is used to restrict the drive block from moving upward.

[0010] In some embodiments, a protrusion is provided at the upper end of the stop block, the guide slope is provided on the protrusion, a limit baffle is provided on the upper wall of the inner end of the transverse slide, and a spring is connected between the protrusion and the limit baffle.

[0011] In some embodiments, two sets of the anti-loosening components are symmetrically arranged.

[0012] In some embodiments, the height of the upper end of the drive block protruding from the vertical groove is 5-30mm.

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

[0014] 1. By using the stop block to radially cut into the thread to form a block, compared with the traditional friction anti-loosening method, it can effectively resist the relative slippage of the thread pair caused by high-frequency micro-amplitude vibration, and the anti-loosening performance is significantly improved;

[0015] 2. The anti-loosening component is embedded in the nut body. The horizontal and vertical sliding grooves form a compact linkage space, which greatly reduces the thickness compared to the double nut structure, making it especially suitable for the assembly of precision equipment in space-constrained environments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is an exploded view of the present invention. Detailed Implementation

[0020] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0021] like Figures 1-3The diagram illustrates an anti-loosening nut structure, comprising a nut body 1 with a threaded hole 2. An anti-loosening component is provided on the nut body 1, including a transverse groove 3 located on the outer side of the nut body 1 and communicating with the threaded hole 2, and a vertical groove 4 located at the upper end of the nut body 1 and communicating with the transverse groove 3. A stop block 5 slides laterally within the transverse groove 3, and a drive block 6 slides vertically within the vertical groove 4. The upper end of the drive block 6 protrudes outside the vertical groove 4, and a transmission structure is connected between the lower end of the drive block 6 and the stop block 5. When the drive block 6 moves downward, the transmission structure drives the stop block 5 to extend into the threaded hole 2.

[0022] A transverse groove 3 is machined on the outside of the nut body 1 to connect with the threaded hole 2; a vertical groove 4 is opened at the top, which intersects the transverse groove 3 perpendicularly; a stop block 5 is installed in the transverse groove 3 and can slide horizontally; a drive block 6 is placed in the vertical groove 4 and can slide vertically.

[0023] When the nut body 1 is engaged with the bolt, the protruding part of the drive block 6 pushes against the locked object. When the nut body 1 is tightened, the drive block 6 is pressed down and moved downward. Then, under the action of the transmission structure, the stop block 5 extends into the threaded hole 2, thereby forming a block by radially cutting into the thread through the stop block 5. Compared with the traditional friction anti-loosening method, it can effectively resist the relative slippage of the thread pair caused by high-frequency micro-amplitude vibration, and the anti-loosening performance is significantly improved.

[0024] It is worth mentioning that the anti-loosening component is embedded in the nut body 1, and the horizontal slide groove 3 and the vertical slide groove 4 form a compact linkage space, which greatly reduces the thickness compared to the double nut structure, making it especially suitable for the assembly of precision equipment with limited space.

[0025] In this invention, a rubber pad 21 is provided at one end of the stop block 5 that extends into the threaded hole 2; the high coefficient of friction of the rubber can provide additional damping, suppressing loosening caused by micro-vibration, and is especially suitable for low-frequency high-amplitude working conditions.

[0026] See Figure 2 , Figure 3 As shown, the transmission structure includes a guide slope 31 located on the upper side of the outer end of the stop block 5, and the lower end of the drive block 6 is provided with a rounded corner 32 for abutting against the guide slope 31; the guide slope 31 and the rounded corner 32 cooperate to efficiently convert the vertical movement of the drive block 6 into the horizontal movement of the stop block 5, reduce sliding friction resistance, and improve the smoothness of movement.

[0027] See Figure 2 As shown, a limit hook 41 is provided at the lower end of the drive block 6 and on the side away from the rounded corner 32. The limit hook 41 is hooked onto the transverse slide groove 3 to restrict the drive block 6 from moving upward.

[0028] Furthermore, a protrusion 51 is provided at the upper end of the stop block 5, the guide slope 31 is provided on the protrusion 51, a limit baffle 52 is provided on the inner upper wall of the transverse slide groove 3, and a spring 53 is connected between the protrusion 51 and the limit baffle 52.

[0029] When installing the drive block 6 and the stop block 5, the spring 53 is placed on the protrusion 51 and then inserted into the transverse slide groove 3, with the other end of the spring 53 abutting against the limiting baffle 52. Then, the drive block 6 is inserted into the vertical slide groove 4 and hooked onto the edge of the transverse slide groove 3 by the limiting hook 41 to restrict the drive block 6 from moving upward. At the same time, the guide slope 31 of the stop block 5 abuts against the rounded corner 32 of the drive block 6, thereby restricting the drive block 6 from moving outward. Under the action of the spring 53, the inner end of the stop block 5 is kept retracted into the transverse slide groove 3, ensuring that the bolt can be connected to the threaded hole 2. Moreover, after the drive block 6 and the stop block 5 are installed, they will not fall out, and the stability is good.

[0030] Furthermore, the anti-loosening components are symmetrically arranged in two sets, which can balance the locking force and avoid uneven bolt load caused by pressure on one side.

[0031] In this invention, the height of the upper end of the drive block 6 protruding from the vertical slide groove 4 is 5-30mm.

[0032] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A locking nut structure comprising a nut body (1) having a threaded hole (2) formed therethrough, characterized in that: The nut body (1) is provided with an anti-loosening assembly, which comprises a transverse sliding groove (3) provided on the outer side of the nut body (1) and communicating with the threaded hole (2), a vertical sliding groove (4) provided on the upper end of the nut body (1) and communicating with the transverse sliding groove (3), a stop block (5) sliding transversely in the transverse sliding groove (3), a driving block (6) sliding up and down in the vertical sliding groove (4), the upper end of the driving block (6) protruding out of the vertical sliding groove (4), and a transmission structure connected between the lower end of the driving block (6) and the stop block (5), when the driving block (6) moves downward, the stop block (5) can be driven to extend into the threaded hole (2) through the transmission structure.

2. A lock nut structure according to claim 1, wherein: The end of the stop block (5) extending into the threaded hole (2) is provided with a rubber pad (21).

3. The lock nut assembly of claim 1, wherein: The transmission structure comprises a guide inclined surface (31) provided on the outer end of the stop block (5), and the lower end of the driving block (6) is provided with a round corner (32) for abutting against the guide inclined surface (31).

4. A lock nut assembly according to claim 3 wherein: A limiting hook (41) is provided on the lower end of the driving block (6) and away from the round corner (32), the limiting hook (41) is hooked on the transverse sliding groove (3) for limiting the upward movement of the driving block (6).

5. A lock nut assembly according to claim 4 wherein: A protruding portion (51) is provided on the upper end of the stop block (5), the guide inclined surface (31) is provided on the protruding portion (51), a limiting baffle (52) is provided on the inner end of the transverse sliding groove (3), and a spring (53) is connected between the protruding portion (51) and the limiting baffle (52).

6. The lock nut assembly of claim 1, wherein: The anti-loosening assembly is symmetrically provided with two groups.

7. The lock nut assembly of claim 1, wherein: The height of the upper end of the driving block (6) protruding out of the vertical sliding groove (4) is 5-30 mm.

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