Locking anti-rotation device

Abstract

The utility model provides a locking anti-rotation device. The technical problem that an existing dip net adapter is prone to loosening and reversing is solved. The device comprises an upper connector and a lower connector which are in threaded connection, the device further comprises a transmission sleeve and a gear sleeve, the transmission sleeve is rotatably arranged on the lower connector in a sleeving mode, the lower section of the gear sleeve is arranged on the upper section of the transmission sleeve in a threaded sleeving mode, and sawteeth matched with each other are arranged at the top of the gear sleeve and the bottom of the upper connector. The fishing gear can be widely applied to the technical field of fishing gears.

Description

Technical Field

[0001] This application belongs to the field of fishing gear technology, and more specifically, relates to a locking anti-rotation device. Background Technology

[0002] A landing net adapter is a device used to connect the handle and head of a landing net. In traditional landing net structures, the connection between the handle and head is often fixed. This forces users to purchase a completely new landing net when they need to change to a different size or type of head, increasing costs and being environmentally unfriendly. The advent of the landing net adapter cleverly solves this problem. Through a standardized interface design, it allows the handle to be quickly connected to various landing net heads, improving the versatility and flexibility of the landing net and greatly enhancing the user experience.

[0003] However, when landing nets are used to catch fish, the connections often loosen, causing the net to flip over and the fish to escape. A Chinese utility model patent with publication number CN206413617U provides a quick-connect anti-rotation connector for the net ring and handle of a landing net. It discloses a method of preventing rotation by setting pins and pin slots at the net joint and net rod joint, respectively. However, this device uses steel balls to prevent the net joint and joint bushing from detaching, which only prevents detachment and does not solve the problem of looseness. Furthermore, using a single pin to prevent rotation can lead to uneven stress when the fish is too heavy, making rotation even more likely. Summary of the Invention

[0004] The purpose of this application is to provide a locking and anti-rotation device to solve the technical problems of easy loosening and easy reverse rotation of the net adapter in the prior art.

[0005] To achieve the above objectives, this application provides a locking anti-rotation device, comprising an upper connector and a lower connector, the upper connector and the lower connector being threadedly connected, and further comprising a transmission sleeve and a toothed sleeve. The transmission sleeve is rotatably fitted onto the lower connector, and the lower section of the toothed sleeve is threadedly fitted onto the upper section of the transmission sleeve. The top of the toothed sleeve and the bottom of the upper connector are provided with matching serrations.

[0006] Preferably, the lower connector is provided with an annular limiting groove in the circumferential direction, and the transmission sleeve is provided with a protrusion corresponding to the annular limiting groove.

[0007] Preferably, the upper section of the toothed sleeve is provided with a guide member, and the lower connector is provided with a corresponding guide groove along the length direction.

[0008] Preferably, the bottom of the front section of the transmission sleeve has an annular boss extending outward.

[0009] Preferably, the lower connector is provided with a step to support the transmission sleeve, and the step is located below the annular limiting groove.

[0010] Preferably, there are at least three protrusions that are evenly distributed circumferentially.

[0011] Preferably, there are two guide members that are symmetrically distributed.

[0012] Preferably, the upper connector has a threaded groove at the top and the lower connector has a threaded post at the bottom.

[0013] The beneficial effects of this application are as follows: This application utilizes the interaction of the upper connector, the gear sleeve, the lower connector, and the transmission sleeve to achieve the functions of locking and preventing reverse rotation. Specifically, by utilizing the threads of the lower section of the gear sleeve, the upper section of the transmission sleeve, and the lower connector, when the transmission sleeve rotates around the lower connector, the gear sleeve moves upward until the serrations at the top of the gear sleeve and the bottom of the upper connector lock together, thus preventing reverse rotation. Furthermore, when the gear sleeve and the upper connector are locked, the upper section of the transmission sleeve and the lower section of the gear sleeve are also relatively locked, achieving a double locking effect and further enhancing the prevention of reverse rotation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0015] Figure 1 A perspective view of a locking anti-rotation device provided in an embodiment of this application;

[0016] Figure 2 An exploded view of a locking anti-rotation device provided in an embodiment of this application;

[0017] Figure 3 This is a cross-sectional view of a locking anti-rotation device provided in an embodiment of this application.

[0018] In the diagram: 1. Upper connector; 2. Gear sleeve; 3. Transmission sleeve; 4. Lower connector; 5. Protrusion; 6. Threaded groove; 7. Guide groove; 8. Annular limiting groove; 9. Threaded post; 10. Sawtooth; 11. Guide component; 12. Boss; 13. Step. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] Please see Figure 1-3This application provides a locking anti-rotation device according to an embodiment, comprising an upper connector 1 and a lower connector 4, which are threadedly connected. The upper connector 1 and the lower connector 4 are used to install a net head and a net handle, respectively. It also includes a transmission sleeve 3 and a toothed sleeve 2. The transmission sleeve 3 is rotatably fitted onto the lower connector 4, and the lower section of the toothed sleeve 2 is threaded onto the upper section of the transmission sleeve 3.

[0021] In an optional embodiment, when the transmission sleeve 3 moves clockwise, the threads on the transmission sleeve 3 cause the toothed sleeve 2 to move upward relative to the transmission sleeve 3 until the serrations 10 surrounding the top of the toothed sleeve 2 engage with the serrations 10 at the bottom of the upper connector 1, achieving a locking function and preventing reverse rotation. Here, the serrations 10 are used to lock the upper connector 1, the toothed sleeve 2, and the transmission sleeve 3, achieving a locking effect while preventing reverse rotation and reducing the safety risks caused by reverse rotation. When the toothed sleeve 2 and the upper connector 1 are locked, the upper section of the transmission sleeve 3 and the lower section of the toothed sleeve 2 are also relatively locked, achieving a double locking effect and further enhancing the prevention of reverse rotation.

[0022] When the transmission sleeve 3 moves counterclockwise, the threads on the transmission sleeve 3 cause the toothed sleeve 2 to move downward relative to the transmission sleeve 3 until the serrations 10 surrounding the top of the toothed sleeve 2 separate from the serrations 10 at the bottom of the upper connector 1. Locking and disengagement can be achieved simply by rotating the transmission sleeve 3, making the operation simple.

[0023] Furthermore, the lower connector 4 is provided with an annular limiting groove 8 around its circumference, and the transmission sleeve 3 is provided with a protrusion 5 corresponding to the annular limiting groove 8. Here, the protrusion 5 is used to restrict the circumferential movement of the transmission sleeve 3, ensuring that the transmission sleeve 3 moves circumferentially around the lower connector 4, thus achieving the effects of orientation and preventing disengagement. It is worth noting that at least three protrusions 5 are provided, and they are evenly distributed circumferentially. The shape of the protrusions 5 is not limited here and can be set according to actual conditions. In one embodiment, the protrusions 5 are selected from hexagonal socket head cap screws, with a set quantity of three, and they are evenly distributed circumferentially.

[0024] Specifically, the upper section of the gear sleeve 2 is provided with a guide member 11, and the lower connector 4 is provided with a corresponding guide groove 7 along its length. Here, the space for the guide member 11 and the guide groove 7 to move along the length direction is used to guide the gear sleeve 2, achieving precise guidance. Two guide members 11 are provided and symmetrically distributed to ensure that the gear sleeve 2 is subjected to uniform force during movement. The shape of the guide member 11 is not limited and can be set according to actual conditions. In an optional embodiment, the guide member 11 is a hexagon socket head cap screw, with two screws symmetrically distributed.

[0025] In an optional embodiment, the bottom front section of the transmission sleeve 3 has an annular boss 12 extending outward. When the upper connector 1 is disengaged, the boss 12 provides support for the gear sleeve 2, dispersing the support force provided by the threads in the transmission sleeve 3 to the upper connector 1, thereby improving the durability and service life of the entire transmission sleeve 3.

[0026] Preferably, the lower connector 4 is provided with a step 13 to support the transmission sleeve 3, and the step 13 is located below the annular limiting groove 8. Here, the step 13 is used to provide support for the transmission sleeve 3, ensuring the stability of the device. On the other hand, the step 13 can also limit the guide member 11 and the protrusion 5, preventing the guide member 11 and the protrusion 5 from leaving the lower connector 4.

[0027] The upper connector 1 has a threaded groove 6 at its top, and the lower connector 4 has a threaded post 9 at its bottom. The threaded groove 6 and the threaded post 9 are used to fix the net head and the net handle, respectively.

[0028] Working principle: When connecting the net head and net handle, install the net head in the threaded groove 6 and screw the threaded post 9 into the net handle. Then, rotate the transmission sleeve 3 clockwise. Driven by the transmission sleeve 3, the toothed sleeve 2 moves upward along the directional groove 7, causing the serrations 10 on top of the toothed sleeve 2 to move upward until they tightly engage with the serrations 10 at the bottom of the upper connector 1. Simultaneously, the lower section of the toothed sleeve 2 and the upper section of the transmission sleeve 3 are locked together by threads, thus locking the upper connector 1, toothed sleeve 2, and transmission sleeve 3 to prevent reverse rotation and achieve a tight connection between the net head and net handle. When separating the net head and net handle, simply rotate the transmission sleeve 3 counterclockwise. Driven by the transmission sleeve 3, the toothed sleeve 2 moves downward along the directional groove 7, causing the serrations 10 on top of the toothed sleeve 2 to move downward until the bottom of the toothed sleeve 2 abuts against the boss 12 of the transmission sleeve 3, separating the upper connector 1 and the toothed sleeve 2, thus separating the net head from the net handle.

[0029] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A locking anti-rotation device, comprising an upper connector and a lower connector, wherein the upper connector and the lower connector are threadedly connected, characterized in that, It also includes a transmission sleeve and a gear sleeve. The transmission sleeve is rotatably fitted onto the lower connector, and the lower section of the gear sleeve is threaded onto the upper section of the transmission sleeve. The top of the gear sleeve and the bottom of the upper connector are provided with matching serrations.

2. The locking anti-rotation device according to claim 1, characterized in that, The lower connector is provided with an annular limiting groove in the circumference, and the transmission sleeve is provided with a protrusion corresponding to the annular limiting groove.

3. A locking anti-rotation device according to claim 1 or 2, characterized in that, The upper section of the toothed sleeve is provided with a guide member, and the lower connector is provided with a corresponding guide groove along its length.

4. A locking anti-rotation device according to claim 3, characterized in that, The front section of the transmission sleeve has an annular protrusion extending outward from the bottom.

5. A locking anti-rotation device according to claim 2, characterized in that, The lower connector is provided with a step to support the transmission sleeve, and the step is located below the annular limiting groove.

6. A locking anti-rotation device according to claim 2, characterized in that, The protrusions are provided at least three times and are evenly distributed circumferentially.

7. A locking anti-rotation device according to claim 3, characterized in that, The guide component is provided in two parts and is symmetrically distributed.

8. A locking anti-rotation device according to claim 1, characterized in that, The upper connector has a threaded groove at the top and the lower connector has a threaded post at the bottom.

Images