Anti-loosening fastening nut

Abstract

The utility model relates to the technical field of nut bodies, in particular to an anti-loosening fastening nut which comprises a nut body, a screw-in hole is formed in the position, close to the center, of the upper surface of the nut body, a reinforcing groove is formed in the end, away from forward threads, of the inner wall of the screw-in hole, a fastening component is arranged in the reinforcing groove, and the fastening component comprises a fastening ring. A plurality of moving grooves are formed in the outer side of the fastening ring, and moving wheels are slidably connected into the moving grooves. According to the nut, the two-way bolt is in meshed rotating connection with the reverse threads in the fastening ring, so that the fastening ring is reversely rotated in the reinforcing groove, when the nut body is reversely rotated, the moving wheel is pushed to a narrow position by the limiting wheel, the limiting wheel and the moving wheel are clamped in the reinforcing groove, the fastening ring cannot be reversely rotated, and the nut body is prevented from being damaged. The fastening effect on the nut body is achieved, and the situation that the nut body is loosened due to vibration is avoided.

Description

Technical Field

[0001] This application relates to the field of nut technology, and more particularly to an anti-loosening fastening nut. Background Technology

[0002] Nuts are one of the most commonly used fasteners in the mechanical field. They are usually used in conjunction with bolts or screws to fasten two parts with through holes.

[0003] Chinese Patent Publication No. CN218934984U discloses an anti-loosening fastening nut, comprising: a nut, which includes a threaded hole, a recessed hole, and a first through hole, the recessed hole being located on one side of the nut, and the first through hole being located on the nut and communicating with the recessed hole; an anti-loosening component, which has a second through hole, the second through hole including a connecting section and a conical sealing section; and a fixing screw, which includes a threaded section and a conical section; the anti-loosening component is located in the recessed hole, the first through hole and the second through hole are connected, one end of the fixing screw is located in the second through hole, the connecting section and the threaded section are fitted together for fixation, and the conical section and the conical sealing section are in close contact; the beneficial effect of this utility model is that the outer wall of the conical section of the fixing screw compresses the inner wall of the conical sealing section, causing the end of the anti-loosening component to abut against the bidirectional bolt, thereby limiting the rotational displacement of the nut and achieving the effect of preventing the nut from loosening.

[0004] In the prior art, there is also a type of bolt that is machined with both positive and negative threads, which can simultaneously allow the assembly of positive and negative thread nuts. During the locking or unlocking process, the positive and negative thread nuts rotate in opposite directions. The common method of preventing loosening is to use the positive and negative thread nuts to tighten together on the two-way bolt. This method does not make full use of the characteristics of the two-way bolt. Even after the two nuts are tightened together, there is still a risk of loosening, and the anti-loosening effect is generally poor.

[0005] Therefore, based on the above-mentioned prior art, this utility model proposes an anti-loosening fastening nut for bidirectional bolts. Utility Model Content

[0006] This application provides an anti-loosening fastening nut, which solves the problem that the anti-loosening effect of the existing anti-loosening structure using two nuts fastened to the bolt is not good.

[0007] This application provides an anti-loosening fastening nut, including a nut body. A turning hole is formed on the upper surface of the nut body near the center. A positive thread is formed on the inner wall of the turning hole near the upper end. A reinforcing groove is formed on the inner wall of the turning hole away from the positive thread. A fastening component is provided inside the reinforcing groove.

[0008] The fastening component includes a fastening ring with a reverse thread inside. The fastening ring is rotatably connected to the reinforcing groove at both ends. The fastening ring has a movable groove on its outer side, and the movable grooves are arranged in a ring about the fastening ring. A movable wheel is slidably connected inside the movable groove. A transverse groove is formed on the side of the inner cavity of the reinforcing groove, and the transverse grooves are arranged in a ring about the reinforcing groove. A limiting wheel is fixedly connected inside the transverse groove, and the limiting wheel is parallel to the center of the movable wheel.

[0009] By adopting the above technical solution, when the bidirectional bolt is used to rotate and connect the nut body, after the bidirectional bolt enters the insertion hole, it first engages with the forward thread. After rotating to a certain position, the bidirectional bolt engages with the reverse thread inside the fastening ring, causing the fastening ring to rotate in reverse inside the reinforcement groove. The moving wheel on the outside of the fastening ring is moved to a deeper position inside the moving groove by the pressure of the limiting wheel, allowing the limiting wheel to pass over the moving wheel. This allows the fastening ring to move downward with the nut body while rotating in reverse. When the nut body is rotated in reverse, the moving wheel is pushed to a narrower position by the limiting wheel, and the limiting wheel and the moving wheel are locked inside the reinforcement groove, preventing the fastening ring from rotating in reverse and achieving the fastening effect on the nut body. At the same time, the small space between the limiting wheel and the moving wheel makes the connection between the fastening ring inside the nut body and the nut body more tight, avoiding the nut body from loosening due to vibration.

[0010] Optionally, a backstop assembly is fixedly connected to one side of the inside of the moving groove. The backstop assembly includes a connecting column, one end of which is fixedly connected to the moving wheel, and the end of the connecting column away from the moving wheel is slidably connected to a connecting cylinder. The end of the connecting cylinder away from the connecting column is fixedly connected to the side of the moving groove.

[0011] By adopting the above technical solution, when the fastening ring is reversed inside the reinforcing groove, the outer moving wheel of the fastening ring is pushed by the limiting wheel to move to a deeper position inside the moving groove. When the moving wheel moves, it pushes the connecting column, causing the connecting column to retract into the connecting cylinder, thus avoiding jamming.

[0012] Optionally, a limiting plate is fixedly connected to the end of the connecting column away from the movable wheel. The limiting plate is located inside the connecting cylinder, and the size of the limiting plate is larger than the size of the connecting column.

[0013] By adopting the above technical solution, in order to prevent the connecting column from detaching from the connecting cylinder when the connecting column slides inside the connecting cylinder, a limiting plate is used to limit the connecting column and the connecting cylinder, thus preventing the possibility of the connecting column detaching from the connecting cylinder.

[0014] Optionally, the connecting cylinder has a telescopic cavity inside, and an elastic element is provided inside the telescopic cavity. One end of the elastic element abuts against the inner side of the telescopic cavity, and the other end of the elastic element is fixedly abutted against the limiting plate.

[0015] By adopting the above technical solution, the elasticity of the elastic element 253 can push the connecting column 251 to always apply a preload to the moving wheel 24. When the nut body reverses, the elastic element pushes the connecting column to keep the moving wheel in a narrow position inside the moving groove, thereby engaging the limiting wheel and achieving the effect of preventing loosening.

[0016] Optionally, the outer wall of the nut body is provided with anti-slip grooves.

[0017] By adopting the above technical solution, and by opening anti-slip grooves on the outside of the nut body, the surface roughness of the nut body can be increased, increasing the friction between the nut body and tools such as wrenches and screwdrivers or fingers, so that operators can tighten the nut body more easily and stably, reduce slippage, and improve work efficiency.

[0018] This utility model application has at least the following effects:

[0019] 1. After the bidirectional bolt enters the insertion hole, it first engages with the forward thread. After being rotated to a certain position, the bidirectional bolt engages with the reverse thread inside the fastening ring, causing the fastening ring to rotate in reverse inside the reinforcement groove. The moving wheel on the outside of the fastening ring is moved to a deeper position inside the moving groove by the pressure of the limiting wheel, allowing the limiting wheel to pass over the moving wheel. This allows the fastening ring to move downward with the nut body while rotating in reverse. When the nut body rotates in reverse, the moving wheel is pushed to a narrower position by the limiting wheel, and the limiting wheel and the moving wheel are locked inside the reinforcement groove, preventing the fastening ring from rotating in reverse. This achieves the fastening effect on the nut body and prevents the nut body from loosening due to vibration.

[0020] 2. By creating anti-slip grooves on the outside of the nut body, the surface roughness of the nut body is increased, increasing the friction between the nut body and tools such as wrenches and screwdrivers or fingers, allowing operators to tighten the nut body more easily and stably, reducing slippage and improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the anti-loosening fastening nut provided in the embodiments of this application;

[0022] Figure 2 A cross-sectional structural diagram of the anti-loosening fastening nut provided in an embodiment of this application;

[0023] Figure 3 A schematic diagram of the frame structure of the anti-loosening fastening nut provided in the embodiments of this application;

[0024] Figure 4 This is a schematic diagram of the fastening component structure of the anti-loosening fastening nut provided in the embodiments of this application;

[0025] Figure 5 This is a schematic diagram of the anti-loosening fastening nut anti-reverse component structure provided in the embodiments of this application;

[0026] The following are the labeling elements in the figure:

[0027] 1. Nut body; 11. Anti-slip groove; 12. Rotation hole; 13. Reinforcing groove; 14. Positive thread; 15. Limiting wheel; 16. Horizontal groove;

[0028] 2. Fastening components; 21. Fastening ring; 22. Reverse thread; 23. Moving groove; 24. Moving wheel; 25. Anti-reverse assembly;

[0029] 251. Connecting column; 252. Connecting cylinder; 253. Elastic element; 254. Telescopic cavity; 255. Limiting plate. Detailed Implementation

[0030] The following combination Figures 1-5 This utility model is described in further detail.

[0031] This embodiment discloses an anti-loosening fastening nut: including a nut body 1, a turning hole 12 is provided on the upper surface of the nut body 1 near the center, a positive thread 14 is provided on the inner wall of the turning hole 12 near the upper end, a reinforcing groove 13 is provided on the inner wall of the turning hole 12 away from the positive thread 14, and a fastening component 2 is provided inside the reinforcing groove 13.

[0032] Please see Figures 2 to 5The fastening component 2 includes a fastening ring 21 with a reverse thread 22 inside. Reinforcing grooves 13 are rotatably connected to both ends of the fastening ring 21. A movable groove 23 is provided on the outer side of the fastening ring 21, and the movable grooves 23 are arranged in a ring about the fastening ring 21. A movable wheel 24 is slidably connected inside the movable groove 23. A transverse groove 16 is provided on the side of the inner cavity of the reinforcing groove 13, and the transverse grooves 16 are arranged in a ring array about the reinforcing groove 13. A limiting wheel 15 is fixedly connected inside the transverse groove 16, and the limiting wheel 15 is parallel to the center of the movable wheel 24. A backstop assembly 25 is fixedly connected to one side inside the movable groove 23, and the backstop assembly 25 includes a connecting post 251. One end of the connecting column 251 is fixedly connected to a movable wheel 24. The end of the connecting column 251 away from the movable wheel 24 is slidably connected to a connecting cylinder 252. The end of the connecting cylinder 252 away from the connecting column 251 is fixedly connected to the side of the movable groove 23. The end of the connecting column 251 away from the movable wheel 24 is fixedly connected to a limiting plate 255. The limiting plate 255 is located inside the connecting cylinder 252. The size of the limiting plate 255 is larger than the size of the connecting column 251. A telescopic cavity 254 is opened inside the connecting cylinder 252. An elastic element 253 is provided inside the telescopic cavity 254. One end of the elastic element 253 abuts against the inner side of the telescopic cavity 254, and the other end of the elastic element 253 is fixedly abutted against the limiting plate 255.

[0033] With this configuration, when the bidirectional bolt rotates to connect the nut body 1, after entering the insertion hole 12, the bidirectional bolt first engages with the forward thread 14. After rotating to a certain position, the bidirectional bolt engages with the reverse thread 22 inside the fastening ring 2121, causing the fastening ring 21 to rotate in reverse inside the reinforcing groove 13. The moving wheel 24 on the outside of the fastening ring 21 is moved to a deeper position inside the moving groove 23 by the pressure of the positioning wheel 15, allowing the limiting wheel 15 to pass over the moving wheel 24. This allows the fastening ring 21 to move downwards along with the nut body 1 while rotating in reverse. When the nut body 1 rotates in reverse, the moving wheel 24 is pushed to a narrower position by the limiting wheel 15. The limiting wheel 15 and the moving wheel 24 are locked inside the reinforcing groove 13, preventing the fastening ring 21 from reversing and achieving a fastening effect on the nut body 1. At the same time, the small space between the limiting wheel 15 and the moving wheel 24 makes the fastening ring 21 inside the nut body 1 more tightly connected to the nut body 1, preventing the nut body 1 from loosening due to vibration. The elasticity of the elastic element 253 pushes the connecting column 251 to always apply a preload force to the moving wheel 24. When the nut body 1 reverses, the elastic element 253 pushes the connecting column 251 to keep the moving wheel 24 in a narrow position inside the moving groove 23, locking the limiting wheel 15 and achieving an anti-loosening effect.

[0034] Please see Figures 1 to 2 The outer wall of the nut body 1 has multiple anti-slip grooves 11.

[0035] With this design, by opening an anti-slip groove 11 on the outside of the nut body 1, the surface roughness of the nut body 1 can be increased, increasing the friction between the nut body 1 and tools such as wrenches and screwdrivers or fingers, so that the operator can tighten the nut body 1 more easily and stably, reduce slippage, and improve work efficiency.

[0036] The implementation principle of the anti-loosening fastening nut in this embodiment is as follows: When the bidirectional bolt rotates and connects to the nut body 1, after the bidirectional bolt enters the insertion hole 12, it first engages with the forward thread 14. After rotating to a certain position, the bidirectional bolt engages and rotates with the reverse thread 22 inside the fastening ring 21, causing the fastening ring 21 to rotate in reverse inside the reinforcing groove 13. The moving wheel 24 on the outside of the fastening ring 21 is moved to a deeper position inside the moving groove 23 by the pressure of the limiting wheel 15, allowing the limiting wheel 15 to pass over the moving wheel 24. This allows the fastening ring 21 to move downward along with the nut body 1 while rotating in reverse. When the nut body 1 reverses, the movable wheel 24 is pushed to a narrower position by the positioning wheel 15. The limiting wheel 15 and the movable wheel 24 are locked inside the reinforcing groove 13, preventing the fastening ring 21 from reversing. At the same time, the small space between the limiting wheel 15 and the movable wheel 24 makes the fastening ring 21 inside the nut body 1 more tightly connected to the nut body 1. The elasticity of the elastic element 253 pushes the connecting column 251 to always apply a preload force to the movable wheel 24. When the nut body 1 reverses, the elastic element 253 pushes the connecting column 251 to keep the movable wheel 24 in a narrower position inside the movable groove 23, locking the limiting wheel 15 and achieving the effect of preventing loosening.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A locking nut, characterized in that: Includes a nut body (1), with a turning hole (12) opened on the upper surface of the nut body (1) near the center, and a positive thread (14) starting on the inner wall of the turning hole (12) near the upper end. A reinforcing groove (13) is opened on the inner wall of the turning hole (12) away from the positive thread (14), and a fastening component (2) is provided inside the reinforcing groove (13). The fastening component (2) includes a fastening ring (21), the fastening ring (21) has a reverse thread (22) inside, the two ends of the fastening ring (21) are rotatably connected to the reinforcing groove (13), the fastening ring (21) has a moving groove (23) on the outside, and the moving groove (23) is arranged in a ring about the fastening ring (21). The moving groove (23) is slidably connected to the moving wheel (24). The side of the inner cavity of the reinforcing groove (13) has a transverse groove (16), and the transverse groove (16) is arranged in a ring about the reinforcing groove (13). The transverse groove (16) is fixedly connected to the limiting wheel (15), and the limiting wheel (15) is parallel to the center of the moving wheel (24).

2. The anti-loosening fastening nut according to claim 1, characterized in that: A backstop assembly (25) is fixedly connected to one side inside the moving groove (23). The backstop assembly (25) includes a connecting post (251). One end of the connecting post (251) is fixedly connected to the moving wheel (24). The end of the connecting post (251) away from the moving wheel (24) is slidably connected to a connecting cylinder (252). The end of the connecting cylinder (252) away from the connecting post (251) is fixedly connected to the side of the moving groove (23).

3. The anti-loosening fastening nut according to claim 2, characterized in that: The connecting column (251) is fixedly connected to the limiting plate (255) at the end away from the moving wheel (24). The limiting plate (255) is located inside the connecting cylinder (252), and the size of the limiting plate (255) is larger than the size of the connecting column (251).

4. The anti-loosening fastening nut according to claim 3, characterized in that: The connecting cylinder (252) has a telescopic cavity (254) inside, and an elastic element (253) is provided inside the telescopic cavity (254). One end of the elastic element (253) abuts against the inner side of the telescopic cavity (254), and the other end of the elastic element (253) is fixedly abutted against the limiting plate (255).

5. The anti-loosening fastening nut according to claim 4, characterized in that: The outer wall of the nut body (1) is provided with anti-slip grooves (11).

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