Adjusting device based on pet pulling rope
By designing an installation box and adjustment mechanism on the pet leash, and utilizing a two-way threaded rod and bevel gear structure, the lock hook can be easily replaced and the leash length adjusted, solving the problem of replacing the lock hook when it is damaged, and improving the practicality and effectiveness of the pet leash.
Patent Information
- Application Number
- CN202422979860.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-04
AI Technical Summary
Existing pet leashes are inconvenient to replace when the locking hook is damaged, which reduces their practicality and effectiveness.
An adjustment device based on a pet leash was designed, including a mounting box, an adjustment mechanism, a two-way threaded rod, and a bevel gear structure. The locking hook can be easily replaced through meshing connection, and the leash length can be adjusted through a rotating shaft and a winding wheel.
It enables convenient replacement of the locking hook and flexible adjustment of the traction rope length, improving the practicality and ease of use of the device.
Smart Images

Figure CN223503571U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pet supplies technology, and in particular to an adjustment device for pet leashes. Background Technology
[0002] A pet leash is a tool used to lead and control pets. It is typically used by attaching a hook at one end to the pet's collar or harness. Designed for outdoor activities such as walks, exercise, or exploration, pet leashes allow owners to better control and guide their pets' movements, ensuring their safety and proper behavior.
[0003] For example, Chinese patent application CN202322295570.5 describes an adjustable pet leash, stating in its specification that "This utility model relates to the field of pet supplies technology, specifically to an adjustable pet leash, comprising: a leash, which is the main body of this new leash; a buffer rope, which is connected to the other end of the leash; limiting holes, all of which are formed on the surface of the leash; an adjusting block, which is installed at one end of the leash; and rubber bands, all of which are disposed inside the buffer rope. This utility model overcomes the shortcomings of the prior art. Through the adjusting block and sponge rubber, in order to reduce problems caused by sudden pulling of the pet, the cross connection of the rubber band and sponge rubber allows sufficient space to extend and stretch under tension to absorb most of the pulling force, thereby reducing the pulling force brought by the pet. When adjusting the length, the moving linkage block drives the connecting structure to change the limiting position, allowing the leash length to be adjusted, which is convenient for users to adjust the pet's range of movement and use."
[0004] Existing pet leashes, during use, use a moving linkage block to drive the connecting structure, allowing the limit position to be changed and the leash length to be adjusted. This makes it convenient for users to adjust the pet's range of movement and use. However, if the locking hook is damaged, it is not easy to replace the locking hook, which reduces the practicality of the pet leash and results in poor performance. Utility Model Content
[0005] This utility model mainly provides an adjustment device for pet leash that facilitates the replacement of locking hooks and improves practicality.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an adjustment device for a pet leash, comprising a mounting box, an adjustment mechanism inside the mounting box, a leash on the outer surface of the adjustment mechanism, one end of the leash movably passing through the mounting box, a fixed shell fixedly connected to one end of the leash, a limiting groove on one side of the fixed shell, a bidirectional threaded rod rotatably connected inside the fixed shell, a fixing frame sleeved on the outer surface of the bidirectional threaded rod, the fixing frame movably passing through the limiting groove, a rotating rod connected to the top inner side of the fixed shell via a bearing, bevel gears provided at the bottom end of the rotating rod and on the outer surface of the bidirectional threaded rod, two bevel gears meshing together, and a locking hook between the two fixing frames.
[0007] Preferably, the adjustment mechanism includes a rotating shaft rotatably connected inside the mounting box. A winding wheel is fixedly sleeved on the outer surface of the rotating shaft, and the leash is wound around the outer surface of the winding wheel. By rotating the rotating shaft, the rotating shaft drives the winding wheel to rotate, and the rotation of the winding wheel can drive the leash to be wound up and down, which facilitates the adjustment of the leash length and makes it convenient for users to adjust the pet's activity range and use.
[0008] Preferably, one end of the rotating shaft extends movably through the mounting box, and a rotating disk is fixedly connected to one end of the rotating shaft. By rotating the rotating disk, the rotating disk can drive the rotating shaft to rotate.
[0009] Preferably, one end of the rotating disk is threadedly connected to a one-way threaded rod, and one end of the one-way threaded rod is fixedly installed with a rotating cap. Rotating the rotating cap can drive the one-way threaded rod to rotate.
[0010] Preferably, a plurality of fixing blocks are fixedly connected to one side of the mounting box, and each of the fixing blocks has a threaded hole on its surface. When the one-way threaded rod is rotated, the one-way threaded rod is connected to the threaded hole on the corresponding fixing block, which facilitates the limiting and fixing of the rotating shaft and the winding wheel, and facilitates the fixing of the length of the traction rope.
[0011] Preferably, a handle is fixedly installed on one side of the mounting box, and an anti-slip pad is fixedly fitted onto the outer surface of the handle. The handle is easy to use by the user, and the anti-slip pad provides an anti-slip function.
[0012] Preferably, a handle is fixedly installed at the top of the rotating rod, and a rocker arm is fixedly connected to one end of the rotating disk. The handle facilitates the user's rotation of the rotating rod, and the rocker arm facilitates the user's rotation of the rotating disk.
[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0014] 1. In this utility model, when the lock hook needs to be replaced, rotating the rotating rod causes the two bevel gears to mesh, which in turn drives the bidirectional threaded rod to rotate. The limiting groove limits the fixing frame, causing the bidirectional threaded rod to move the two fixing frames away from each other, thereby releasing the restriction on the lock hook and allowing it to be removed. During installation, the replaced lock hook is placed between the two fixing frames, and then the rotating rod is rotated, causing the bidirectional threaded rod to move the two fixing frames relative to each other, thus facilitating the restriction on the lock hook. The operation is convenient and improves the practicality of the device.
[0015] 2. In this utility model, the adjustable mechanism allows the rotating shaft to rotate, which in turn drives the winding wheel to rotate. The rotation of the winding wheel can cause the leash to be wound up and down, making it easy to adjust the length of the leash and allowing users to adjust the pet's activity range and use the product. Furthermore, the rotating disc allows the rotating cap to rotate, which in turn drives the rotating shaft to rotate. The rotating cap then drives the one-way threaded rod to rotate, connecting the one-way threaded rod to the threaded hole on the corresponding fixing block. This facilitates the limiting and fixing of the rotating shaft and the winding wheel, and makes it easy to fix the length of the leash. Attached Figure Description
[0016] Figure 1 A perspective view of the main structure of the present invention based on an adjustment device for a pet leash is provided.
[0017] Figure 2 A three-dimensional view of the bottom structure of an adjustment device for a pet leash is provided for this utility model.
[0018] Figure 3 A three-dimensional cross-sectional view of an adjustment device for a pet leash is provided for this utility model.
[0019] Figure 4 This utility model presents a three-dimensional cross-sectional view of the fixing shell in an adjustment device for a pet leash.
[0020] Legend: 1. Mounting box; 2. Adjustment mechanism; 201. Rotating shaft; 202. Winding reel; 3. Traction rope; 4. Fixing shell; 5. Limiting groove; 6. Two-way threaded rod; 7. Fixing frame; 8. Rotating rod; 9. Bevel gear; 10. Locking hook; 11. Rotating disc; 12. One-way threaded rod; 13. Rotating cap; 14. Fixing block; 15. Threaded hole; 16. Handle; 17. Anti-slip pad; 18. Rotating handle; 19. Rocker arm. Detailed Implementation
[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0023] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides an adjustment device for a pet leash, including a mounting box 1, an adjustment mechanism 2 inside the mounting box 1, a leash 3 on the outer surface of the adjustment mechanism 2, one end of the leash 3 movably passing through the mounting box 1, a fixed shell 4 fixedly connected to one end of the leash 3, a limiting groove 5 on one side of the fixed shell 4, a bidirectional threaded rod 6 rotatably connected inside the fixed shell 4, a fixing frame 7 sleeved on the outer surface of the bidirectional threaded rod 6, the fixing frame 7 movably passing through the limiting groove 5, a rotating rod 8 connected to the top of the inner side of the fixed shell 4 via a bearing, bevel gears 9 on both the bottom end of the rotating rod 8 and the outer surface of the bidirectional threaded rod 6, the two bevel gears 9 meshing together, and a locking hook 10 between the two fixing frames 7.
[0024] The overall effect of Embodiment 1 is that when the lock hook 10 needs to be replaced, rotating the rotating rod 8 causes the two bevel gears 9 to mesh and rotate, thus driving the bidirectional threaded rod 6 to rotate. The limiting groove 5 limits the fixing frame 7, causing the bidirectional threaded rod 6 to move the two fixing frames 7 away from each other, thereby releasing the restriction on the lock hook 10 and allowing it to be removed. During installation, the replaced lock hook 10 is placed between the two fixing frames 7, and then the rotating rod 8 is rotated, causing the bidirectional threaded rod 6 to move the two fixing frames 7 relative to each other, thus facilitating the restriction on the lock hook 10. The operation is convenient and improves the practicality of the device.
[0025] Example 2: Figure 1 - Figure 4 As shown, the adjustment mechanism 2 includes a rotating shaft 201, which is rotatably connected to the mounting box 1. A winding wheel 202 is fixedly sleeved on the outer surface of the rotating shaft 201. A traction rope 3 is wound around the outer surface of the winding wheel 202. One end of the rotating shaft 201 movably passes through the mounting box 1. A rotating disk 11 is fixedly connected to one end of the rotating shaft 201. A one-way threaded rod 12 is threadedly connected to one end of the rotating disk 11. A rotating cap 13 is fixedly installed at one end of the one-way threaded rod 12. Several fixing blocks 14 are fixedly connected to one side of the mounting box 1. Threaded holes 15 are opened on the surface of each fixing block 14. A handle 16 is fixedly installed on one side of the mounting box 1. An anti-slip pad 17 is fixedly sleeved on the outer surface of the handle 16. A rotating handle 18 is fixedly installed at the top of the rotating rod 8. A rocker arm 19 is fixedly connected to one end of the rotating disk 11.
[0026] The overall effect of Embodiment 2 is as follows: by adjusting the shaft 201, the shaft 201 drives the winding wheel 202 to rotate, and the rotation of the winding wheel 202 can drive the leash 3 to be wound up and down, making it easy to adjust the length of the leash 3. This facilitates the user's adjustment of the pet's activity range and use. Furthermore, by rotating the rotating disk 11, the shaft 201 can be rotated, and by rotating the rotating cap 13, the one-way threaded rod 12 can be rotated, so that the one-way threaded rod 12 connects with the threaded hole 15 on the corresponding fixing block 14, which facilitates the limiting and fixing of the shaft 201 and the winding wheel 202, and facilitates the fixing of the length of the leash 3. Furthermore, by using the handle 16, it is easy to use. The anti-slip pad 17 provides an anti-slip function. Furthermore, the rotating handle 18 makes it easy for the user to rotate the rotating rod 8, and the rocker arm 19 makes it easy for the user to rotate the rotating disk 11.
[0027] Working principle: In use, the rocker arm 19 rotates the rotating disk 11, which in turn drives the rotating shaft 201 to rotate. The rotating shaft 201 then drives the winding wheel 202 to rotate, which in turn drives the leash 3 to be wound up or down, facilitating the adjustment of the leash 3's length. After adjustment, rotating the rotating cap 13 drives the one-way threaded rod 12 to rotate, connecting the one-way threaded rod 12 to the threaded hole 15 on the corresponding fixing block 14. This limits and fixes the rotating shaft 201 and the winding wheel 202, thereby fixing the length of the leash 3. The leash 3 is then connected to the pet's collar or harness via the locking hook 10 for use. It is ready to use. When the lock hook 10 needs to be replaced, turn the handle 18 to drive the rotating rod 8 to rotate. Since the two bevel gears 9 are meshed, they drive the bidirectional threaded rod 6 to rotate. The limiting groove 5 limits the fixing frame 7, so that the bidirectional threaded rod 6 drives the two fixing frames 7 to move away from each other, thereby releasing the restriction on the lock hook 10, and the lock hook 10 can be taken out. When installing, place the replaced lock hook 10 between the two fixing frames 7, and then turn the handle 18 to drive the bidirectional threaded rod 6 to move the two fixing frames 7 relative to each other, so as to facilitate the restriction on the lock hook 10. The operation is convenient and improves the practicality of the device.
[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. An adjustment device for a pet leash, comprising a mounting box (1), characterized in that: An adjustment mechanism (2) is provided inside the installation box (1). A traction rope (3) is provided on the outer surface of the adjustment mechanism (2). One end of the traction rope (3) passes through the installation box (1). A fixed shell (4) is fixedly connected to one end of the traction rope (3). A limiting groove (5) is opened on one side of the fixed shell (4). A bidirectional threaded rod (6) is rotatably connected inside the fixed shell (4). A fixing frame (7) is sleeved on the outer surface of the bidirectional threaded rod (6). The fixing frame (7) passes through the limiting groove (5). A rotating rod (8) is connected to the top of the inner side of the fixed shell (4) through a bearing. A bevel gear (9) is provided at the bottom end of the rotating rod (8) and on the outer surface of the bidirectional threaded rod (6). The two bevel gears (9) are meshed and connected. A locking hook (10) is provided between the two fixing frames (7).
2. The adjustment device for a pet leash according to claim 1, characterized in that: The adjustment mechanism (2) includes a rotating shaft (201), which is rotatably connected to the mounting box (1). A winding wheel (202) is fixedly sleeved on the outer surface of the rotating shaft (201), and the traction rope (3) is wound around the outer surface of the winding wheel (202).
3. The adjustment device for a pet leash according to claim 2, characterized in that: One end of the rotating shaft (201) is movably inserted through the mounting box (1), and a rotating disk (11) is fixedly connected to one end of the rotating shaft (201).
4. The adjusting device for a pet leash according to claim 3, characterized in that: One end of the rotating disk (11) is threadedly connected to a one-way threaded rod (12), and a rotating cap (13) is fixedly installed on one end of the one-way threaded rod (12).
5. The adjusting device for a pet leash according to claim 1, characterized in that: A number of fixing blocks (14) are fixedly connected to one side of the mounting box (1), and threaded holes (15) are opened on the surface of each of the fixing blocks (14).
6. The adjusting device for a pet leash according to claim 1, characterized in that: A handle (16) is fixedly installed on one side of the mounting box (1), and an anti-slip pad (17) is fixedly sleeved on the outer surface of the handle (16).
7. The adjusting device for a pet leash according to claim 3, characterized in that: A handle (18) is fixedly installed at the top of the rotating rod (8), and a rocker arm (19) is fixedly connected to one end of the rotating disk (11).
Citation Information
Patent Citations
Adjustable pet leash
CN220936234U