Anti-loosening nut assembly

Abstract

The anti-loosening nut assembly comprises a bolt body and a nut, the bolt body comprises a bolt head and a threaded rod body connected to the bottom of the bolt head, a limiting groove is formed in the side face of the threaded rod body, an anti-loosening assembly is movably installed outside the threaded rod body, and the nut is in threaded connection with the outside of the threaded rod body. The anti-disengaging assembly comprises a lantern ring arranged outside the threaded rod body in a sleeving mode, and a protruding block arranged in the limiting groove in a clamped mode is arranged on the inner side of the lantern ring. When the anti-loosening nut assembly is used, the sleeve ring is arranged outside the threaded rod body in a sleeving mode, at the moment, the protruding block is clamped in the limiting groove, then the nut is in threaded connection to the outside of the threaded rod body, the second fork is upwards propped by fingers to drive the limiting piece and the first fork to be bent outwards, and after the nut is screwed to the outer side of the first fork, the nut is screwed out. Clamping force is applied through deformation recovery of the forks to abut against the outer side of the nut, so that the nut can be prevented from rotating and loosening, operation is easy and convenient, and convenience and practicability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolts and nuts, in particular to a loosening-preventing nut assembly. Background Technique

[0002] A nut is a mechanical part, usually used for threaded fastening. Its shape is usually hexagonal, square, circular, etc., and it has a threaded structure inside for mating with bolts, etc. In the field of mechanical manufacturing, nuts are common fasteners, usually used to connect two or more objects. After traditional nuts are tightened, they tend to loosen under vibration. Over time, they will become looser and looser, and even the whole nut will fall out. The loosening and falling off of nuts pose great potential safety hazards.

[0003] In the prior art, for example, the patent No. CN222458042U discloses a loosening-preventing nut. After the nut body is threadedly installed on the screw body, the loosening-preventing limiting cylinder is screwed onto the screw body, and then one end of the threaded column is passed through the loosening-preventing limiting cylinder and inserted into the threaded hole on the nut body. The rotating head is rotated to lock and fix the loosening-preventing limiting cylinder and the nut body. Subsequently, a professional tool is inserted into the installation groove, and the installation head is rotated. The installation head drives the limiting column to rotate, and the limiting column drives the locking block to move forward until the locking block is fitted and fixed to the outer wall of the screw body, so that the loosening-preventing limiting cylinder and the nut body cannot rotate by themselves, improving the loosening-preventing effect.

[0004] When the above patent is used, the threaded column needs to be tightened in the threaded hole, and the locking block is pushed to move by rotating the limiting column for limiting and locking. Due to the small overall volume, the overall operation is inconvenient and complicated. At the same time, smaller holes need to be opened on the nut body and the loosening-preventing limiting cylinder, and the processing is also more troublesome. Content of the Utility Model

[0005] The purpose of the utility model is to provide a loosening-preventing nut assembly to solve the problems of inconvenient and complicated operation, and the need to open smaller holes on the nut body and the loosening-preventing limiting cylinder, which is more troublesome in processing, as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a loosening-preventing nut assembly, including a bolt main body and a nut. The bolt main body includes a bolt head and a threaded rod body connected to the bottom of the bolt head. A limiting groove is opened on the side surface of the threaded rod body. An anti-detachment assembly is movably installed outside the threaded rod body. The nut is threadedly connected to the outside of the threaded rod body.

[0007] The anti-loosening component includes a collar sleeved outside the threaded rod body. A convex block clamped in the limiting groove is arranged on the inner side of the collar. A limiting piece is fixedly connected to the outer side of the collar. The lower end of the limiting piece extends with a first fork and a second fork. The first fork abuts against the outer side of the nut.

[0008] Preferably, the limiting groove and the convex block are symmetrically arranged on the left and right sides of the threaded rod body and the collar respectively.

[0009] Preferably, the second fork is located outside the first fork, and the first fork is bent in an arc shape towards the inside.

[0010] Preferably, the anti-loosening component is of an integral structure, and the thickness of the limiting piece is smaller than that of the collar and the convex block.

[0011] Preferably, the anti-loosening component is made of a highly elastic metal material.

[0012] Preferably, a groove is formed on the inner side of the first fork, and the groove is adapted to the edges and corners of the nut.

[0013] Preferably, the threaded rod body is movably sleeved with a second gasket and a first gasket respectively located on the upper and lower sides of the collar.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. During use, the collar is sleeved outside the threaded rod body. At this time, the convex block is clamped in the limiting groove. Then, the nut is threadedly connected to the outside of the threaded rod body. By pressing the second fork upwards with a finger to drive the limiting piece and the first fork to bend outwards. When the nut is screwed to the outside of the first fork, the first fork restores its deformation to apply a clamping force to tightly press against the outside of the nut, thereby preventing the nut from rotating and loosening. The operation is simple and convenient, and it is practical and useful.

[0016] 2. The anti-loosening component is of an integral structure, which reduces complexity. Made of stainless steel or spring steel, it has good durability. At the same time, the anti-loosening component can undergo appropriate elastic deformation when subjected to external forces. It can not only adapt to nuts of different specifications and sizes, but also quickly return to its original state after the external force is removed, maintaining a stable clamping effect. It is convenient for processing and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is an exploded structural schematic diagram of the present utility model;

[0019] Figure 3 is a front-view structural schematic diagram of the present utility model in the installed state;

[0020] Figure 4 It is a schematic upward view structure of the present utility model;

[0021] Figure 5 It is a schematic three-dimensional structure diagram of the anti-loosening component of the present utility model.

[0022] In the figure: 1. Bolt body; 11. Bolt head; 12. Threaded rod body; 13. Limiting groove; 2. Nut; 3. Anti-loosening component; 31. Collar; 32. Protrusion; 33. Limiting piece; 34. First fork; 35. Second fork; 36. Groove; 4. First gasket; 5. Second gasket. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , the present utility model provides a technical solution: an anti-loosening nut assembly, including a bolt body 1 and a nut 2. The bolt body 1 includes a bolt head 11 and a threaded rod body 12 connected to the bottom of the bolt head 11. A limiting groove 13 is provided on the side of the threaded rod body 12. An anti-loosening component 3 is movably installed outside the threaded rod body 12, and the nut 2 is threadedly connected to the outside of the threaded rod body 12;

[0025] The anti-loosening component 3 includes a collar 31 sleeved outside the threaded rod body 12. A protrusion 32 clamped in the limiting groove 13 is provided on the inner side of the collar 31. A limiting piece 33 is fixedly connected to the outside of the collar 31. The lower end of the limiting piece 33 extends with a first fork 34 and a second fork 35. The first fork 34 abuts against the outside of the nut 2.

[0026] During use, the collar 31 is sleeved outside the threaded rod body 12. At this time, the protrusion 32 is clamped in the limiting groove 13. Then, the nut 2 is threadedly connected to the outside of the threaded rod body 12. The second fork 35 is pushed upward by a finger to drive the limiting piece 33 and the first fork 34 to bend outward. When the nut 2 is screwed to the outside of the first fork 34, the first fork 34 deforms and restores to apply a clamping force to tightly abut against the outside of the nut 2, thereby preventing the nut 2 from rotating and loosening. The operation is simple and convenient, and it is practical and useful.

[0027] The limiting groove 13 and the convex block 32 are symmetrically arranged on the left and right sides of the threaded rod body 12 and the collar 31 respectively, so that the collar 31 can smoothly slide into the limiting groove 13 during installation, ensuring the accurate cooperation between the convex block 32 and the limiting groove 13. The symmetrical layout on the left and right makes the entire anti-loosening component 3 more balanced in structure. Together with the first fork 34, it can prevent the nut 2 from rotating axially and prevent loosening.

[0028] The second fork 35 is located outside the first fork 34. During use, the second fork 35 can serve as an operating part, facilitating the user to push with a finger to drive the first fork 34 and the limiting piece 33 to bend outward, thus facilitating the screwing and installation of the nut 2. The first fork 34 is bent in an arc shape towards the inside, so that when the first fork 34 is subjected to an external force, it can better fit the outer surface of the nut 2, increasing the friction force and improving the anti-loosening effect.

[0029] The anti-loosening component 3 is of an integral structure, reducing complexity. The thickness of the limiting piece 33 is less than that of the collar 31 and the convex block 32. The thin design of the limiting piece 33 makes it more flexible and can more easily deform along with the bending of the first fork 34 without causing excessive stress concentration or damage. At the same time, the thinner limiting piece 33 also ensures that when the first fork 34 returns to its original state, it can closely fit the outer side of the nut 2, providing a stable clamping force.

[0030] The anti-loosening component 3 is made of a metal material with high elasticity.

[0031] Preferably, stainless steel or spring steel is used, which has good durability. At the same time, the anti-loosening component 3 can undergo appropriate elastic deformation when subjected to an external force, being able to adapt to nuts 2 of different specifications and sizes and quickly return to its original state after the external force is removed, maintaining a stable clamping effect.

[0032] Please refer to Figure 5 , a groove 36 is formed on the inner side of the first fork 34, and the groove 36 is adapted to the corners of the nut 2. When the first fork 34 fits the nut 2, the groove 36 can exactly accommodate the corners of the nut 2, further enhancing the fitting degree and friction force, thereby improving the anti-loosening effect.

[0033] Please refer to Figure 2 and Figure 3 , the outer part of the threaded rod body 12 is movably sleeved with a second gasket 5 and a first gasket 4 respectively located on the upper and lower sides of the collar 31, ensuring the fixed position of the collar 31 on the threaded rod body 12 and preventing it from easily sliding due to vibration or external force. At the same time, its material is preferably wear-resistant and has a certain elasticity, which can effectively reduce the friction loss between the collar 31 and the threaded rod body 12 and also provide a certain buffering effect, improving the durability and stability of the component.

[0034] Working principle: When in use, first sleeving the second gasket 5 on the threaded rod body 12, and sleeving the collar 31 on the outside of the threaded rod body 12 by clamping the convex block 32 on its inner side in the limit groove 13. Then, sleeving the first gasket 4 on the threaded rod body 12, so that the second gasket 5 and the first gasket 4 are respectively located on the upper and lower sides of the collar 31. Then, screwing the nut 2 onto the outside of the threaded rod body 12, pushing the collar 31 upward to make it abut against the lower part of the connected object, and applying force upward with fingers at the second fork 35. Driving the limit piece 33 to generate elastic deformation outward through the second fork 35. Then, tightening the nut 2 to abut against the lower part of the first gasket 4. After loosening the second fork 35, the limit piece 33 deforms and restores to make the first fork 34 abut against the side of the nut 2. When the nut 2 rotates and loosens, applying a clamping force to the nut 2 from the side through the first fork 34, and cooperating with the collar 31 that cannot rotate axially due to the convex block 32 being stuck in the limit groove 13, thereby preventing the nut 2 from rotating and playing a role in preventing loosening.

[0035] The above is the working process of the entire device, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-loosening nut assembly, comprising a bolt body (1) and a nut (2), characterized in that: The bolt body (1) comprises a bolt head (11) and a threaded rod body (12) connected to the bottom of the bolt head (11); a limiting groove (13) is provided on the side of the threaded rod body (12); an anti-dropping component (3) is movably installed on the outside of the threaded rod body (12); and the nut (2) is threadedly connected to the outside of the threaded rod body (12); The anti-slip assembly (3) comprises a collar (31) sleeved on the outside of the threaded rod (12); a protrusion (32) is arranged on the inner side of the collar (31) and is clamped in the limit groove (13); the outer side of the collar (31) is fixedly connected to a limit plate (33); a first fork (34) and a second fork (35) extend from the lower end of the limit plate (33); the first fork (34) abuts against the outer side of the nut (2).

2. The anti-loosening nut assembly according to claim 1, characterized in that: The limiting groove (13) and the protrusion (32) are respectively located on the side of the threaded rod body (12) and the side of the collar (31) and are arranged symmetrically on the left and right.

3. The anti-loosening nut assembly according to claim 1, characterized in that: The second fork (35) is located outside the first fork (34), and the first fork (34) is bent inwardly in an arc shape.

4. The anti-loosening nut assembly according to claim 3, characterized in that: The anti-drop assembly (3) is an integrated structure, and the thickness of the limiting piece (33) is smaller than that of the collar (31) and the protrusion (32).

5. The anti-loosening nut assembly according to claim 4, characterized in that: The anti-slip component (3) is made of a highly elastic metal material.

6. The anti-loosening nut assembly according to claim 3, characterized in that: A groove (36) is provided on the inner side of the first fork (34), and the groove (36) is adapted to fit the corner of the nut (2).

7. The anti-loosening nut assembly according to claim 1, characterized in that: The outer part of the threaded rod body (12) is movably sleeved with a second gasket (5) and a first gasket (4) respectively located on the upper and lower sides of the collar (31).

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