Dual lock nut with self-locking function

Abstract

The utility model discloses a double lock nut with a self-locking function, which comprises a nut body, extrusion transmission grooves are arranged on two sides inside the nut body, extrusion lock mechanisms are arranged inside the extrusion transmission grooves, clamping transmission grooves are arranged on two sides of the extrusion transmission grooves inside the nut body, and clamping lock mechanisms are arranged inside the clamping transmission grooves. And mounting threads are formed on the inner wall of the nut body. The nut has the advantages that after the nut body is installed on the surface of a bolt corresponding to the internal thread of the nut body, the protruding edge of the thread of the bolt is squeezed and limited through the squeezing anti-loosening mechanism, the friction force between the nut and the surface of the bolt is increased, and the upper inclined face and the lower inclined face of the protruding position of the thread on the surface of the bolt are clamped and limited through the clamping anti-loosening mechanism; the nut is effectively prevented from loosening while self-locking of the nut is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of nuts, and more specifically, to a double self-locking nut with a self-locking function. Background Art

[0002] In the field of modern mechanical assembly, bolts and nuts, as basic connectors, are widely used in the fixation and assembly of various mechanical equipment and structural components. Through the mutual engagement of threads, they achieve the fastening and positioning between components, and are key elements to ensure the stability and safety of equipment. However, although existing nuts usually have a certain self-locking property after being tightened, in practical applications, especially under the influence of external factors such as vibration and impact, the nuts are prone to looseness or even fall off, which poses a serious threat to the safety and reliability of the equipment.

[0003] Most existing nut designs rely on the friction of the threads themselves to maintain their fastening state. Although some products adopt methods such as nylon insert locking, spring washers or applying locking glue to enhance the self-locking performance, these measures are still insufficient under extreme working conditions. Since these additional anti-loosening measures do not fundamentally solve the self-loosening problem of nuts under dynamic loads, when the nuts are in an environment with frequent vibration and strong impact, their anti-loosening effect is still limited. For the problems in the related technology, no effective solution has been proposed yet. Summary of the Utility Model

[0004] In view of the problems in the related technology, the present utility model proposes a double self-locking nut with a self-locking function to overcome the above-mentioned technical problems existing in the existing related technology.

[0005] To this end, the specific technical solution adopted by the present utility model is as follows:

[0006] A double self-locking nut with a self-locking function includes a nut body. On both sides inside the nut body, there are extrusion drive grooves. Inside the extrusion drive grooves, there is an extrusion anti-loosening mechanism. On both sides of the extrusion drive grooves inside the nut body, there are clamping drive grooves. Inside the clamping drive grooves, there is a clamping anti-loosening mechanism. On the inner wall of the nut body, there are installation threads.

[0007] Furthermore, in order to increase the friction between the nut and the surface of the bolt after the nut is installed on the bolt, the extrusion anti-loosening mechanism includes a sliding channel opened on one side of the extrusion drive groove. Inside the sliding channel, there is a sliding extrusion column. One end of the extrusion column is fixedly connected to a buffer spring. One end of the buffer spring is fixedly connected to a transmission column. The end of the transmission column is fixedly connected to a compression inclined block. Inside the extrusion drive groove, there is a sliding push rod. On the surface of the push rod, there is a fixedly connected extrusion inclined block.

[0008] Further, in order to prevent the nut from loosening after being installed on the bolt, the clamping anti-loosening mechanism includes a clamping channel opened on one side of the clamping transmission groove. A threaded transmission rod is rotatably installed on the bottom surface of the clamping transmission groove. A pair of transmission blocks with opposite internal threads are threadedly connected to the surface of the threaded transmission rod. One end of the transmission block is fixedly connected to a clamping plate. The clamping plate is slidably installed in the clamping channel. The top of the threaded transmission rod is fixedly connected to a screwing rod.

[0009] Further, in order to realize driving the pressed inclined block to move in the extrusion transmission groove through the extrusion inclined block, the pressed inclined block is matched with the inclined surface of the extrusion inclined block. The top end of the push rod is fixedly connected to a pressing plate.

[0010] Further, in order to achieve better contact between the end of the clamping plate and the surface of the bolt, a clamping inclined surface is provided at the end of the clamping plate.

[0011] Further, in order to prevent the threaded transmission rod from loosening, limiting grooves are opened on both sides of the surface of the nut body. Limiting columns are slidably installed on the surface of the pressing plate. The limiting columns are matched with the limiting grooves.

[0012] Further, in order to increase the friction force when the extrusion column and the clamping plate contact the bolt, anti-slip threads are provided at the ends of the extrusion column and on the clamping inclined surface.

[0013] The beneficial effects of the present utility model are as follows: After the nut body is rotatably installed on the surface of the bolt that matches the internal thread installed therein, by pressing the push rod, the push rod drives the extrusion inclined block to move downward. The inclined surface of the extrusion inclined block extrudes the pressed inclined block, so that the pressed inclined block pushes the transmission column and the buffer spring to move in the sliding channel. Furthermore, the extrusion column at the end of the buffer spring squeezes and limits the two sides of the raised edge of the bolt thread, increasing the friction force between the nut body and the bolt after installation; by screwing the threaded transmission rod to make a pair of transmission blocks on its surface move relatively, the moving block drives the clamping plate to pass through the clamping channel, so that the clamping plate clamps and limits the upper and lower inclined surfaces of the raised part of the bolt surface, further increasing the friction force between the nut and the bolt after installation, realizing the self-locking property after the nut is installed, and effectively preventing the nut from loosening after being vibrated or impacted. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 is a schematic surface structure diagram of a double anti-loosening nut with a self-locking function according to an embodiment of the present utility model;

[0016] Figure 2 is Figure 1 The enlarged schematic view of part A in the middle;

[0017] Figure 3 The internal sectional view of the extrusion drive groove in a double self-locking nut with a self-locking function according to an embodiment of the present invention;

[0018] Figure 4 is the internal sectional view of the clamping drive groove in a double self-locking nut with a self-locking function according to an embodiment of the present invention.

[0019] In the figure:

[0020] 1. Nut body; 2. Extrusion drive groove; 3. Extrusion anti-loosening mechanism; 301. Sliding channel; 302. Extrusion column; 303. Buffer spring; 304. Transmission column; 305. Compression inclined block; 306. Push rod; 307. Extrusion inclined block; 4. Clamping drive groove; 5. Clamping anti-loosening mechanism; 501. Clamping channel; 502. Threaded transmission rod; 503. Transmission block; 504. Clamping plate; 505. Twisting rod; 6. Installation thread; 7. Pressing plate; 8. Clamping inclined surface; 9. Limiting groove; 10. Limiting column; 11. Anti-slip pattern. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] According to an embodiment of the present invention, a double self-locking nut with a self-locking function is provided.

[0023] Embodiment 1:

[0024] Such as Figures 1 - 4As shown in the figure, a double self-locking anti-loosening nut with a self-locking function according to an embodiment of the present invention includes a nut body 1 made of hexagonal metal material. A pair of extrusion transmission grooves 2 are opened on both sides inside the nut body 1. An extrusion anti-loosening mechanism 3 is provided inside the extrusion transmission groove 2. The extrusion anti-loosening mechanism 3 includes a plurality of sliding channels 301 opened on one side of the extrusion transmission groove 2. Each sliding channel 301 corresponds to a thread groove on the nut body 1. An extrusion column 302 is slidably installed inside the sliding channel 301. One end of the extrusion column 302 is fixedly connected to a buffer spring 303. One end of the buffer spring 303 is fixedly connected to a transmission column 304. The end of the transmission column 304 is fixedly connected to a pressure-receiving inclined block 305. A push rod 306 is slidably installed inside the extrusion transmission groove 2. An extrusion inclined block 307 corresponding to the number of the pressure-receiving inclined blocks 305 is fixedly connected to the surface of the push rod 306. The pressure-receiving inclined block 305 is slidably installed in the extrusion transmission groove 2, and the inclined surface of the pressure-receiving inclined block 305 is matched with the inclined surface of the extrusion inclined block 307. An installation thread 6 is opened on the inner wall of the nut body 1 for fixedly installing on the surface of a bolt that matches it.

[0025] As Figures 1 - 4 shown, a pair of clamping transmission grooves 4 are opened on both sides of the extrusion transmission groove 2 inside the nut body 1. A clamping anti-loosening mechanism 5 is provided inside the clamping transmission groove 4. The clamping anti-loosening mechanism 5 includes a plurality of clamping channels 501 opened on one side of the clamping transmission groove 4. A threaded transmission rod 502 is rotatably installed on the bottom surface of the clamping transmission groove 4. A pair of transmission blocks 503 with opposite internal threads are threadedly connected to the surface of the threaded transmission rod 502. The rotation of the threaded transmission rod 502 can drive them to move relatively. One end of the transmission block 503 is fixedly connected to a clamping plate 504. The clamping plate 504 is slidably installed inside the clamping channel 501, and a clamping inclined surface 8 is provided at the end of the clamping plate 504. By moving the transmission block 503, the end of the clamping plate 504 passes through the sliding channel 301 to realize clamping and limiting of the bolt in the thread groove. A screwing rod 505 is fixedly connected to the top of the threaded transmission rod 502 for conveniently driving the rotation of the threaded transmission rod 502. A pair of limit grooves 9 are opened on both sides of the surface of the nut body 1. A limit post 10 is slidably installed on the surface of the pressing plate 7. The limit post 10 is matched with the limit groove 9. After the threaded transmission rod 502 is screwed, by slidably installing the limit post 10 in the limit groove 9, the rotation of the threaded transmission rod 502 is limited to prevent it from loosening. Anti-slip threads 11 are provided at the ends of the extrusion column 302 and the clamping inclined surface 8 to increase the friction when the extrusion column 302 and the clamping inclined surface 8 contact the surface of the bolt.

[0026] In order to facilitate the understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0027] In summary, by means of the above technical solution of the present utility model, during actual use, after the nut body 1 is rotationally installed on the surface of a bolt that mates with the internal installation thread 6 therein, by pressing the push rod 306, the push rod 306 drives the extrusion inclined block 307 on one side to move downward in the extrusion transmission groove 2, so that the inclined surface of the extrusion inclined block 307 extrudes the pressed inclined block 305, and then the pressed inclined block 305 pushes the transmission column 304 and the buffer spring 303 to move in the sliding channel 301, and further the extrusion column 302 at the end of the buffer spring 303 extrudes and limits both sides of the raised edge of the bolt thread, increasing the friction force after the nut body 1 and the bolt are installed; by screwing the threaded transmission rod 502 to make the pairs of transmission blocks 503 on its surface move relatively, the moving block drives the end of the clamping plate 504 to pass through the clamping channel 501, so that the clamping inclined surface 8 clamps and limits the upper and lower inclined surfaces of the threaded protrusion on the surface of the bolt, further increasing the friction force after the nut and the bolt are installed, realizing the self-locking property after the nut is installed, and effectively preventing the nut from loosening after being vibrated or impacted.

[0028] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A double anti-loosening nut with self-locking function, characterized in that: The invention comprises a nut body (1), wherein extrusion transmission grooves (2) are formed on both sides of the interior of the nut body (1), an extrusion anti-loosening mechanism (3) is provided inside the extrusion transmission groove (2), clamping transmission grooves (4) are formed on both sides of the extrusion transmission groove (2) in the nut body (1), a clamping anti-loosening mechanism (5) is provided inside the clamping transmission groove (4), and a mounting thread (6) is formed on the inner wall of the nut body (1).

2. A double anti-loosening nut with self-locking function according to claim 1, characterized in that: The extrusion anti-loosening mechanism (3) comprises a sliding channel (301) opened on one side of the extrusion transmission groove (2), an extrusion column (302) is slidably installed inside the sliding channel (301), one end of the extrusion column (302) is fixedly connected to a buffer spring (303), one end of the buffer spring (303) is fixedly connected to a transmission column (304), the end of the transmission column (304) is fixedly connected to a pressure inclined block (305), a push rod (306) is slidably installed inside the extrusion transmission groove (2), and an extrusion inclined block (307) is fixedly connected to the surface of the push rod (306).

3. The double anti-loosening nut with self-locking function according to claim 1, characterized in that: The clamping and anti-loosening mechanism (5) comprises a clamping channel (501) opened on one side of the clamping transmission groove (4); a threaded transmission rod (502) is rotatably mounted on the bottom surface of the clamping transmission groove (4); a pair of transmission blocks (503) with opposite internal threads are threadedly connected to the surface of the threaded transmission rod (502); a clamping plate (504) is fixedly connected to one end of the transmission block (503); the clamping plate (504) is slidably mounted in the clamping channel (501); and a twisting rod (505) is fixedly connected to the top of the threaded transmission rod (502).

4. A double anti-loosening nut with self-locking function according to claim 2, characterized in that: The pressure inclined block (305) cooperates with the inclined surface of the extrusion inclined block (307), and the top end of the push rod (306) is fixedly connected to a pressing plate (7).

5. The double anti-loosening nut with self-locking function according to claim 3, characterized in that: A clamping slope (8) is provided at the end of the clamping plate (504).

6. The double anti-loosening nut with self-locking function according to claim 3, characterized in that: Limiting grooves (9) are formed on both sides of the surface of the nut body (1), and limiting posts (10) are slidably mounted on the surface of the twisting rod (505), wherein the limiting posts (10) cooperate with the limiting grooves (9).

7. A double anti-loosening nut with self-locking function according to claim 2, characterized in that: Anti-slip grooves (11) are provided on the end of the extrusion column (302) and the clamping inclined surface (8).

Images