A hind limb assist device for a dog
By designing a walking aid device for dogs' hind limbs, the problems of unsuitable support force and poor versatility of existing devices have been solved, achieving better support and adaptability, and reducing skin abrasion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 王楚珺
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-26
AI Technical Summary
Existing support devices cannot adapt the support force to the specific movements of dogs when they walk, which may compress the spinal nerves and cause secondary injuries, and they have poor versatility.
A canine hind limb walking aid device was designed, including a fixed support and a movable support. The shape of the support is adjusted by a drive device to match the movement of the dog's legs. A cushioning pad is set to reduce friction, and an adjustment mechanism is used to adapt to the height of different dogs.
It provides better support, reduces skin abrasion on dogs, enhances the versatility of the device, ensures that the support force is consistent with the direction of the dog's movement, and adapts to different dog sizes.
Smart Images
Figure CN224402567U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pet assistance technology, specifically to a canine hind limb walking aid device. Background Technology
[0002] With the development of the times, society is paying more and more attention to the health of pets, especially for senior dogs and dogs with mobility impairments. In order to meet their special needs, assistive support devices are installed on senior dogs. The installation of assistive support devices can help senior dogs improve their mobility. However, most existing assistive support devices rely on simple mechanical support, which may result in the support force provided when supporting the dog to walk often not being adapted to the dog's specific movements. Furthermore, improper placement of the support force may compress the spinal nerves, thereby causing secondary injury to the dog.
[0003] For example, patent application number 202010904604.4, published on November 27, 2020, discloses a walking aid for dogs with hind limb disabilities, including: a frame for supporting the dog's hind limbs; multiple intelligent transmission modules for acquiring muscle signals from the dog and predicting the dog's behavior; and adjusting the frame according to the muscle signals to assist the dog in completing the predicted behavior. This invention can support dogs with hind limb disabilities in performing the actions required for daily activities.
[0004] The above-mentioned literature uses a middle fixing part to fix the dog's abdomen, and a front fixing part to connect the middle fixing part to the dog's neck. Then, a bracket supports the dog's hind legs, and an intelligent transmission module controls and predicts the dog's behavior to adjust the bracket, so that the bracket assists the dog in completing the predicted behavior. The above-mentioned literature mainly uses a vertical bracket set on one side of the dog's leg, and the bracket is composed of multiple small brackets that are rotatably connected. The small brackets only contact one side of the dog's leg and are then connected to the dog's leg by a fixing strap. Since the bracket is only located on one side of the leg, the support area of the leg is limited, and the fixing strap only fixes a local surface, which cannot provide a good abutment support for the leg. Furthermore, the height of the bracket cannot be adjusted for dogs of different heights, so the same bracket cannot be used for different dogs, resulting in poor versatility. Summary of the Invention
[0005] This utility model provides a walking aid device for dogs' hind limbs, which has good assist effect and good versatility.
[0006] To achieve the above objectives, the technical solution of this utility model is: a canine hind limb walking aid device for the thigh and lower leg of a dog, comprising a fixed bracket, the upper end of which is an annular body with a first opening on one side, a first strap on the first opening, the annular body of the fixed bracket abutting against the front side of the dog's hind thigh, driving devices respectively provided on both sides of the lower end of the fixed bracket, the upper ends of the two driving devices being connected to the upper ends of the driving devices through an adjustment mechanism, the lower ends of the two driving devices being respectively connected to both sides of a movable bracket, the movable bracket being provided with a second strap, the movable bracket abutting against the front side of the dog's hind lower leg, and the driving devices driving the movable bracket to rotate relative to the fixed bracket.
[0007] In the above configuration, the fixed bracket, through its first opening, covers and abuts against the front of the dog's thigh, and is then secured by a first strap. The lower leg is covered by a movable bracket, connected by a second strap. The fixed bracket, with its upper ring shape, increases the contact area between the fixed bracket and the thigh, providing support. This allows the lower leg to rotate backward and the thigh to tilt forward when the leg moves, such as bending. A drive mechanism is provided between the fixed and movable brackets, allowing adjustment of their shape to match the dog's leg movement. An adjustment mechanism between the drive mechanism and the fixed bracket allows for height adjustment, accommodating dogs of different heights and enhancing versatility.
[0008] Furthermore, a first buffer pad is provided on the inner side of the fixed bracket, a second buffer pad is provided on the inner side of the driving device, and a third buffer pad is provided on the inner side of the movable bracket.
[0009] With the above setup, when the dog walks, there is relative sliding between the limbs and the support, which generates friction. The cushioning pad absorbs the friction through elastic deformation, reducing skin abrasion.
[0010] Furthermore, a fixed support frame is provided at the upper end of the fixed bracket, and fixed connecting frames are provided on both sides of the fixed support frame extending downwards. Fixed connecting buckles are provided on both sides of the fixed connecting frame, and the fixed connecting buckles are for the first binding strap to pass through.
[0011] The above setup evenly distributes the force to both sides of the fixed support frame through the fixed connecting frame, and the fixed connecting frame is equipped with a fixed connecting buckle that allows the first strap to be inserted and fixed, so that disassembly and assembly can be completed without tools.
[0012] Furthermore, the fixed support frame is in contact with the front of the dog's hind thigh, the fixed connecting frame is in contact with the side of the dog's hind thigh, and the fixed connecting frame is connected to one side of the drive device.
[0013] With the above configuration, the frontal cross-sectional area of the dog's hind thigh is large, and the fixed support frame contacts the frontal area of the dog's hind thigh, which enhances the load-bearing capacity. The fixed connecting frame fits against the side of the dog's hind thigh, and the fixed connecting frame and fixed support frame provide a stable support structure for the drive device.
[0014] Furthermore, the movable bracket includes a movable support frame, on both sides of which are respectively provided movable connecting buckles and movable connecting frames. The movable connecting frames extend upward and outward from both sides of the movable support frame. The movable connecting buckles allow the second strap to pass through, and the movable connecting frames are connected to the other side of the driving device.
[0015] The above setup connects the movable connecting frame to the drive device, enabling the drive device to rotate the movable connecting frame. The movable connecting frame is connected to the movable support frame, allowing the drive device to rotate the movable support frame via the movable connecting frame. Furthermore, the movable support frame is equipped with a movable connecting buckle that allows the second strap to be inserted and fixed, enabling assembly and disassembly without tools.
[0016] Furthermore, the movable support frame has a second opening on one side, and the cross-section of the movable support frame is arc-shaped.
[0017] The above configuration, by setting the cross-section of the movable support frame to be arc-shaped, increases the contact area of the dog's lower leg. The movable support frame makes contact with the front of the dog's hind leg, thus enhancing its load-bearing capacity.
[0018] Furthermore, the driving device includes a drive motor and a drive mounting base. One end of the drive mounting base is connected to a fixed connecting frame, the drive motor is connected to the drive mounting base, and the output shaft of the drive motor is connected to a movable connecting frame.
[0019] In the above configuration, the drive unit is located between the movable support frame and the fixed support frame. The drive mounting base provides an installation position for the drive motor. The drive mounting base is connected to the fixed connecting frame to provide support for the drive mounting base. The output shaft of the drive motor is connected to the movable connecting frame, so that the movable connecting frame can rotate relative to the fixed connecting frame under the action of the drive motor.
[0020] Furthermore, the bottom of the fixed connecting frame is provided with a fixed connecting part, the fixed connecting part is provided with two or more fixed connecting holes, the adjusting mechanism includes an adjusting mounting seat, the adjusting mounting seat is connected to the driving mounting seat, the adjusting mounting seat is hollow to form an adjusting mounting groove for the fixed connecting part to extend into, the upper end of the adjusting mounting seat is provided with adjusting mounting holes on both sides, the adjusting mounting holes are provided with plugs, and the plugs can pass between the adjusting mounting holes and the fixed connecting holes.
[0021] The above settings and adjustment mechanism allow for adjustment of the distance between the fixed connecting frame and the movable connecting frame, thus accommodating dogs of different sizes. During adjustment, the connector is pulled out, and then the position of the fixed connecting part is adjusted so that the corresponding fixed connecting hole is at the same height as the adjustment mounting hole. Then, the connector is passed between the adjustment mounting hole and the fixed connecting hole to complete the height adjustment.
[0022] Furthermore, a direction indicator is provided on the outside of the drive mounting base, and the direction indicator is connected to the output shaft of the drive motor.
[0023] The above configuration includes a directional indicator on the outside of the drive mounting base, which clearly shows the rotational position of the drive motor. This facilitates subsequent adjustments to the position between the drive motor output shaft and the movable connecting frame, avoiding repeated trial adjustments and significantly shortening the alignment time between the movable connecting frame and the drive motor output shaft. Attached Figure Description
[0024] Figure 1 This is the front view of the present invention.
[0025] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0026] Figure 3 This is a partial exploded view of the fixed connecting frame and the adjusting mounting base in this utility model.
[0027] Figure 4 This is a partial exploded view of the present invention.
[0028] Figure 5 for Figure 4 Enlarged view of section B in the middle.
[0029] Explanation of reference numerals: 1-Fixed bracket; 11-Fixed support frame; 110-First opening; 12-Fixed connecting frame; 121-Fixed connecting buckle; 122-Fixed connecting part; 1221-Fixed connecting hole; 2-Drive device; 21-Drive mounting base; 211-Direction indicator; 22-Drive motor; 3-Moving bracket; 31-Moving support frame; 310-Second opening; 32-Moving connecting frame; 33-Moving connecting buckle; 4-First strap; 5-Second strap; 6-First buffer pad; 7-Second buffer pad; 8-Third buffer pad; 9-Adjusting mounting base; 91-Adjusting mounting slot; 92-Plug-in component; 93-Adjusting mounting hole. Detailed Implementation
[0030] Example 1.
[0031] like Figure 1-5 As shown, a canine hind limb walking aid device is used between the thigh and lower leg of a dog's hind limb. It includes a fixed bracket 1 with a first strap 4 connected to the dog's hind thigh via the first strap 4. Driving devices 2 are located on both sides of the fixed bracket 1, each connected to a movable bracket 3. The movable bracket 3 has a second strap 5 connected to the dog's lower leg via the second strap 5. The driving devices 2 drive the movable bracket 3 to rotate relative to the fixed bracket 1. The fixed bracket 1 is connected to the dog's hind thigh via the first strap 4, and the fixed bracket 1 is connected to both sides of the movable bracket 3 via the driving devices 2. The movable bracket 3 is connected to the lower leg via the second strap 5. 5 is connected to the lower leg of the dog's hind limb. The driving device 2 drives the movable bracket 3 to rotate relative to the fixed bracket 1, thus completing the wearing of the walking aid device. Since the driving device 2 is set on both sides of the fixed bracket 1, the independent driving devices 2 on both sides ensure symmetrical assistance and prevent lateral load on the joint caused by the assistance of the driving device 2 on one side. When the driving device 2 drives the movable bracket 3 to move, the direction of movement of the movable bracket 3 is coaxial with the natural swing direction of the lower leg of the dog's hind limb. That is, the rotation axis of the movable bracket 3 coincides with the instantaneous rotation axis of the dog's knee joint, thereby ensuring that the force provided by the driving device 2 is consistent with the direction of movement of the lower leg of the dog's hind limb. The first strap 4 and the second strap 5 are elastic straps.
[0032] like Figure 1-3 As shown, a first buffer pad 6 is provided on the inner side of the fixed bracket 1, a second buffer pad 7 is provided on the inner side of the drive device 2, and a third buffer pad 8 is provided on the inner side of the movable bracket 3. When the dog walks, there is relative sliding between the limbs and the bracket, which generates friction. The buffer pad absorbs the friction generated by elastic deformation, reducing skin abrasion.
[0033] The upper end of the fixed bracket 1 is provided with a fixed support frame 11. The fixed support frame 11 is an annular body with a first opening 110 on one side. A first strap 4 is provided on the first opening 110. Fixed connecting frames 12 are provided on both sides of the fixed support frame 11. Fixed connecting buckles 121 are provided on both sides of the fixed connecting frame 12. The fixed connecting buckles 121 allow the first strap 4 to pass through. The force is evenly transmitted to both sides of the fixed support frame 11 through the fixed connecting frame 12. The fixed connecting buckles 121 on the fixed connecting frame 12 allow the first strap 4 to be inserted and fixed. Disassembly and assembly can be completed without tools.
[0034] The fixed support frame 11 is in contact with the front of the dog's hind thigh, and the fixed connecting frame 12 is in contact with the side of the dog's hind thigh. The fixed connecting frame 12 is connected to one side of the drive device 2. The front of the dog's hind thigh has a large cross-sectional area. The fixed support frame 11 is in contact with the front of the dog's hind thigh, which enhances the load-bearing capacity. The fixed connecting frame 12 is in contact with the side of the dog's hind thigh. The fixed connecting frame 12 and the fixed support frame 11 provide a stable support structure for the drive device 2.
[0035] The movable support 3 includes a movable support frame 31. Movable connecting buckles 33 and movable connecting frames 32 are respectively provided on both sides of the movable support frame 31. The movable connecting frames 32 extend upward and outward from both sides of the movable support frame 32. The movable connecting buckles 33 allow the second straps 5 to pass through. A second opening 310 is provided on one side of the movable support frame 31. The cross-section of the movable support frame 31 is arc-shaped. The movable connecting frames 32 are connected to the other side of the drive device 2. The connection between the movable connecting frames 32 and the drive device 2 allows the drive device 2 to drive the movable connecting frames 32 to rotate. The movable connecting frames 32 are connected to the movable support frame 31, thereby allowing the drive device 2 to drive the movable support frame 31 to rotate through the movable connecting frames 32. Furthermore, the movable connecting buckles 33 on the movable support frame 31 allow the second straps 5 to be inserted and fixed, and disassembly and assembly can be completed without tools.
[0036] The movable support frame 31 fits in close contact with the front of the dog's hind leg. The front of the dog's hind leg has a large cross-sectional area, and the movable support frame 31 is in contact with the front of the dog's hind leg, which enhances the load-bearing capacity.
[0037] like Figure 4-5As shown, the drive device 2 includes a drive motor 22 and a drive mounting base 21. One end of the drive mounting base 21 is fixedly connected to the fixed connecting frame 12. The drive motor 22 is fixedly connected to the drive mounting base 21. The output shaft of the drive motor 22 is fixedly connected to the movable connecting frame 32. In this embodiment, the output shaft of the drive motor 22 is connected to the rotating bracket. The rotating bracket is fixedly connected to the movable connecting frame 32. The drive device 2 is located between the movable support frame 31 and the fixed support frame 11. The drive mounting base 21 provides an installation position for the drive motor 22. The drive mounting base 21 is connected to the fixed connecting frame 12 to provide support for the drive mounting base 21. The output shaft of the drive motor 22 is connected to the movable connecting frame 32, so that the movable connecting frame 32 can rotate relative to the fixed connecting frame 12 under the action of the drive motor 22.
[0038] An adjustment mechanism is provided between the drive mounting base 21 and the fixed connecting frame 12. The fixed connecting frame 12 has a fixed connecting part 122 at its bottom, and the fixed connecting part 122 has two or more fixed connecting holes 1221. The adjustment mechanism includes an adjustment mounting base 9, which is connected to the drive mounting base 21. The adjustment mounting base 9 is hollow and forms an adjustment mounting groove 91 for the fixed connecting part 122 to extend into. The upper end of the adjustment mounting base 9 has adjustment mounting holes 93 on both sides. A connector 92 is provided in the adjustment mounting hole 93. The connector 92 can pass between the adjustment mounting hole 93 and the fixed connecting hole 1221. The adjustment mechanism enables the adjustment of the distance between the fixed connecting frame 12 and the movable connecting frame 32, thereby adapting to dogs of different sizes. During adjustment, the connector 92 is pulled out, and then the position of the fixed connecting part 122 is adjusted so that the corresponding fixed connecting hole 1221 is at the same height as the adjustment mounting hole 93. Then, the connector 92 is passed between the adjustment mounting hole 93 and the fixed connecting hole 1221 to complete the height adjustment.
[0039] A direction indicator 211 is provided on the outside of the drive mounting base 21. The direction indicator 211 is connected to the output shaft of the drive motor 22. When the drive motor 22 rotates, it drives the direction indicator 211 to rotate, so that the rotation position can be determined by rotating the direction indicator 211 to different positions. The rotation position of the drive motor 22 can be clearly seen, which facilitates the subsequent adjustment of the position between the output shaft of the drive motor 22 and the movable connecting frame 32, avoids repeated trial adjustments, and significantly shortens the alignment time between the movable connecting frame 32 and the output shaft of the drive motor 22.
[0040] The working principle of this utility model is as follows: The fixed bracket 1 is connected to the dog's hind thigh via the first strap 4. The fixed bracket 1 is connected to both sides of the movable bracket 3 via the drive device 2. The movable bracket 3 is connected to the dog's hind lower leg via the second strap 5. The drive device 2 drives the movable bracket 3 to rotate relative to the fixed bracket 1, thus completing the wearing of the walking aid device. Since the drive device 2 is set on both sides of the fixed bracket 1, the independent drive devices 2 on both sides ensure symmetrical assistance and prevent lateral load on the joint caused by assistance from a single drive device 2. The user controls the opening and rotation angle of the drive device 2 through an external controller so that when the drive device 2 drives the movable bracket 3 to move, the direction of movement of the movable bracket 3 is coaxial with the natural swing direction of the dog's hind lower leg, thereby ensuring that the direction of the force provided by the drive device 2 is consistent with the direction of movement of the dog's hind lower leg. The first strap 4 and the second strap 5 are elastic straps.
Claims
1. A hind limb assist device for a dog for use between the thigh and the lower leg of the hind limb of a dog, comprising a fixed support, characterised in that: The upper end of the fixed bracket is an annular body with a first opening on one side, and a first strap is provided on the first opening. The annular body of the fixed bracket fits against the front side of the dog's hind thigh. The lower end of the fixed bracket has two driving devices on both sides. The upper ends of the two driving devices are connected to the upper ends of the driving devices through an adjustment mechanism. The lower ends of the two driving devices are respectively connected to the two sides of the movable bracket. The movable bracket is provided with a second strap and fits against the front side of the dog's hind lower leg. The driving devices drive the movable bracket to rotate relative to the fixed bracket.
2. A hindquarters support device for a dog according to claim 1, characterized in that: A first buffer pad is provided on the inner side of the fixed bracket, a second buffer pad is provided on the inner side of the driving device, and a third buffer pad is provided on the inner side of the movable bracket.
3. A hindquarters support device for a dog according to claim 1, wherein: The upper end of the fixed bracket is provided with a fixed support frame, and fixed connecting frames are provided on both sides of the fixed support frame extending downward. Fixed connecting buckles are provided on both sides of the fixed connecting frame, and the fixed connecting buckles are for the first binding strap to pass through.
4. A hindquarters support device for a dog according to claim 3, wherein: The fixed support frame fits against the front of the dog's hind thigh, the fixed connecting frame fits against the side of the dog's hind thigh, and the fixed connecting frame is connected to one side of the drive device.
5. A canine hind limb walking aid device according to claim 2, characterized in that: The movable support includes a movable support frame, on both sides of which are respectively provided movable connecting buckles and movable connecting frames. The movable connecting frames extend upward and outward from both sides of the movable support frame. The movable connecting buckles allow a second strap to pass through. The movable connecting frames are connected to the other side of the drive device.
6. A canine hind limb walking aid device according to claim 5, characterized in that: The movable support frame has a second opening on one side, and the cross-section of the movable support frame is arc-shaped.
7. A canine hind limb walking aid device according to claim 1, characterized in that: The driving device includes a drive motor and a drive mounting base. One end of the drive mounting base is connected to a fixed connecting frame, the drive motor is connected to the drive mounting base, and the output shaft of the drive motor is connected to a movable connecting frame.
8. A canine hind limb walking aid device according to claim 3, characterized in that: The fixed connecting frame has a fixed connecting part at its bottom, and the fixed connecting part has two or more fixed connecting holes. The adjusting mechanism includes an adjusting mounting base, which is connected to a driving mounting base. The adjusting mounting base is hollow and forms an adjusting mounting groove for the fixed connecting part to extend into. The upper end of the adjusting mounting base has adjusting mounting holes on both sides, and a connector is provided in the adjusting mounting hole. The connector can pass between the adjusting mounting hole and the fixed connecting hole.
9. A canine hind limb walking aid device according to claim 7, characterized in that: A direction indicator is provided on the outside of the drive mounting base.