Knee bending exercise auxiliary training device

Abstract

The utility model discloses a knee bending exercise auxiliary training device, which belongs to the technical field of rehabilitation training, and comprises a first supporting part, a second supporting part and a third supporting part, the second supporting part is used for supporting the knee joint, and the second supporting part rotates relative to the first supporting part; a bearing cavity; the sliding grooves are formed in the two side faces of the bearing cavity. One end of the crank connecting rod is mounted on two sides of the joint of the first supporting part and the second supporting part, and the other end of the crank connecting rod slides in the chute in a limited manner; and the rail bodies are symmetrically mounted in the bearing cavity. Through the hinge design of the second pedal plate and the elastic support of the compression spring, self-adaptive adjustment can be carried out according to the actual pressure of the legs and the feet of a patient. The personalized adaptation not only ensures the accuracy of training, but also remarkably improves the comfort level of the patient, reduces the discomfort in the training process, and a stable limiting and fixing mechanism is formed through the cooperation of the arc-shaped supporting plate, the locking concave block, the friction plate and the limiting block.

Description

Technical Field

[0001] This utility model relates to the field of rehabilitation training technology, specifically to a knee flexion exercise assistive training device. Background Technology

[0002] In the field of medical rehabilitation, knee flexion training is an important means of restoring lower limb function, enhancing muscle strength, and improving joint flexibility. Traditional knee flexion training methods often rely on manual assistance or simple mechanical equipment, which have many shortcomings. For example, manual assistance training requires a large amount of human resources, and the training effect is greatly affected by the experience and skill level of the assistive personnel; while simple mechanical equipment often lacks personalization and adaptability, and cannot meet the specific needs of different patients.

[0003] With the continuous advancement of medical technology and the updating of rehabilitation concepts, people have increasingly higher requirements for knee flexion training equipment. Ideal knee flexion training equipment should possess the following characteristics: first, it should be able to adapt to the different physical characteristics and rehabilitation needs of patients, providing personalized training programs; second, it should be able to automatically adjust the training intensity and difficulty to ensure the safety and effectiveness of the training; third, it should be able to reduce the burden on support staff and improve training efficiency; and fourth, it should be able to increase patient comfort and participation, promoting the rehabilitation process.

[0004] However, existing knee flexion training devices often fail to meet these requirements simultaneously. Therefore, this invention designs a knee flexion exercise assistive training device to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a knee flexion exercise assistive training device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A knee flexion exercise assistive training device, comprising:

[0008] A first support part for supporting the thigh; a second support part for supporting the knee joint, the second support part rotating relative to the first support part; a bearing cavity; a sliding groove formed on both sides of the bearing cavity; a crank connecting rod, one end of which is respectively installed on both sides of the connection between the first and second support parts, the other end of which is limited and slidable in the sliding groove; and rails symmetrically installed inside the bearing cavity.

[0009] The foot pedal assembly slides within the bearing cavity via a rail. The foot pedal assembly includes a first foot pedal, a second foot pedal, a support frame, pulleys, an arc-shaped support plate, and a compression spring. The second foot pedal is hinged relative to the first foot pedal. The first and second foot pedals are mounted on the support frame. The pulleys are mounted on both sides of the support frame and slide on the rail. The arc-shaped support plate is mounted between the second foot pedal and the support frame. The two ends of the compression spring abut against one side of the second foot pedal and the arc-shaped support plate, respectively.

[0010] Preferably, a locking recess is installed on one side of the support frame, and a friction plate and a limiting block are embedded in one side of the locking recess. The side of one end of the arc-shaped support plate abuts against the side of the friction plate and the side of the limiting block, respectively.

[0011] Preferably, a telescopic spring is symmetrically installed on one side of the support frame, and one end of the telescopic spring abuts against one side of the first foot pedal.

[0012] Preferably, the crank connecting rod is symmetrically installed along the centerline of the second support and is fixed with straps between them.

[0013] Preferably, one side of the bearing cavity is an open structure, and a soft package is fixed therebetween. The soft package slides inside the bearing cavity. An ankle recess is installed on one side of the soft package, and one side of the ankle recess is installed on one side of the support frame.

[0014] Preferably, a stop is symmetrically installed on one side of the soft package, and it abuts against the inner side of the bearing cavity.

[0015] Preferably, a heating wire is laid on the inner side of the bearing cavity, and the heating wire is electrically connected to an external temperature controller.

[0016] Compared with the prior art, the advantages of this utility model are as follows:

[0017] 1. This utility model, through the hinged design of the second foot pedal and the elastic support of the compression spring, can adaptively adjust according to the actual pressure on the patient's legs and feet. This personalized adaptation not only ensures the accuracy of training but also significantly improves patient comfort and reduces discomfort during training. The cooperation between the arc-shaped support plate, locking block, friction plate, and limiting block forms a stable limiting and fixing mechanism. In particular, the magnetic design on one side of the friction plate and limiting block ensures the stability of the arc-shaped support plate under force, avoiding shaking or displacement during training, thereby guaranteeing the safety and effectiveness of training.

[0018] 2. This invention, through the cooperation of the crank connecting rod and the slide groove, allows assistants to easily adjust the patient's leg movement trajectory. This flexibility not only meets the training needs of different patients but also makes the training process smoother and more efficient. Simultaneously, the sliding of the pulley on the track ensures the stability and continuity of the training. Through the progressive rebound of the compressed spring and the change in the angle of the second foot pedal, the trainer can achieve progressive knee flexion training. This training method helps patients gradually adapt to the training intensity, reduces pain and discomfort in the early stages of training, and improves rehabilitation outcomes.

[0019] 3. This utility model features an ankle concave frame installed on one side of the soft body. The ankle concave frame is installed on one side of the support frame. When the support frame moves, it causes the soft body to move in the same direction. When the patient's leg is in a flat position, the soft body provides support for the patient's lower leg, while the ankle concave frame positions the patient's ankle, increasing the patient's comfort. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a knee flexion exercise assistive training device according to the present invention;

[0022] Figure 2 for Figure 1 A magnified structural diagram at point A;

[0023] Figure 3 This is a side view of a knee flexion exercise assistive training device according to the present invention;

[0024] Figure 4 Schematic diagram of the pulley and rail assembly structure;

[0025] Figure 5 A schematic diagram of the assembly structure of the arc-shaped support plate and the compression spring;

[0026] Figure 6 This is a three-dimensional schematic diagram of the assembly structure of the arc-shaped support plate and the compression spring;

[0027] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0028] Figure 8This is a top view of a knee flexion exercise assistive training device according to the present invention;

[0029] Figure 9 for Figure 8 Enlarged view of point C in the middle.

[0030] The labels in the diagram represent:

[0031] 1. First support part; 2. Second support part; 3. Bearing cavity; 4. Crank connecting rod; 5. Slide groove; 6. Foot pedal assembly; 7. Soft cover; 8. Ankle recess; 9. Rail body; 10. Stop block; 11. Heating wire; 61. First foot pedal; 62. Second foot pedal; 63. Support frame; 64. Pulley; 65. Arc-shaped support plate; 66. Compression spring; 67. Locking recess; 68. Friction plate; 69. Limiting block. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0033] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0034] In some embodiments, please refer to the accompanying drawings. Figures 1-9 A knee flexion exercise assistive training device, comprising:

[0035] First support part 1, used to support the thigh; second support part 2, used to support the knee joint, the second support part 2 rotates relative to the first support part 1; bearing cavity 3; sliding groove 5, opened on both sides of the bearing cavity 3; crank connecting rod 4, one end is respectively installed on both sides of the connection between the first support part 1 and the second support part 2, the other end is limited and slidable in the sliding groove 5; rail body 9, symmetrically installed inside the bearing cavity 3;

[0036] The foot pedal assembly 6 slides inside the bearing cavity 3 via the rail 9. The foot pedal assembly 6 includes a first foot pedal 61, a second foot pedal 62, a support frame 63, a pulley 64, an arc-shaped support plate 65, and a compression spring 66. The second foot pedal 62 is hinged relative to the first foot pedal 61. The first foot pedal 61 and the second foot pedal 62 are mounted on the support frame 63. The pulley 64 is mounted on both sides of the support frame 63 and slides on the rail 9. The arc-shaped support plate 65 is mounted between the second foot pedal 62 and the support frame 63. The two ends of the compression spring 66 abut against one side of the second foot pedal 62 and the arc-shaped support plate 65, respectively. A locking recess 67 is installed on one side of the support frame 63. A friction plate 68 and a limiting block 69 are embedded in one side of the locking recess 67. One side of the arc-shaped support plate 65 abuts against one side of the friction plate 68 and the limiting block 69, respectively.

[0037] When knee flexion training is required for a patient, an assistant guides the patient's leg through the first support part 1 and the second support part 2 in sequence, and places the patient's foot on the first foot pedal 61 and the second foot pedal 62. The second foot pedal 62 is initially in a hinged support state. Due to the pressure from the patient's leg and foot, the second foot pedal 62 is compressed against the compression spring 66. The compression spring 66 compresses to one side, causing the arc-shaped support plate 65 to hinge towards the locking block 67. Finally, the side of the arc-shaped support plate 65 comes into contact with and is fixed to one side of the limiting block 69 and the friction plate 68, thus limiting the arc-shaped support plate 65. The friction plate 68 and one side of the limiting block 69 have magnetic force. The purpose of this setting is to ensure the stability of the arc-shaped support plate 65 in the limiting and fixed position. The magnetic force does not need to be too large, just enough to ensure that the side of one end of the arc-shaped support plate 65 is attracted.

[0038] After the aforementioned arc-shaped support plate 65 is reset, the assistant pulls the crank connecting rod 4 to one side. One end of the crank connecting rod 4 slides along the inside of the slide groove 5, causing the crank connecting rod 4 to move towards the direction parallel to the bearing cavity 3. At this time, the patient's leg movement trajectory changes, and the pulley 64 slides along the rail 9, causing the first foot pedal 61, the second foot pedal 62, the support frame 63, the pulley 64, the arc-shaped support plate 65, and the compression spring 66 to move in the direction pulled by the assistant. At this time, the patient's leg and foot are in a parallel state, and the second foot pedal 62 is supported by the patient's leg. As the pressure on the head and feet decreases, the compression spring 66 gradually rebounds from its compressed state. Because the patient's leg is gradually flattening or arching, the compression or rebound of the compression spring 66 also proceeds gradually. When the patient's leg is gradually flattened, the compression spring 66 gradually rebounds, thereby driving the arc-shaped support plate 65 away from the friction plate 68 and the limiting block 69, and hinged on the support frame 63. This, in turn, drives the second foot pedal 62 to a 90-degree angle, supporting the front of the patient's foot and toes, ensuring the stability of the knee flexion training. When the leg retracts, the above steps are repeated.

[0039] In another embodiment, one end of the crank connecting rod 4 is installed with a linear actuator such as an electric cylinder or a pneumatic cylinder, and slides inside the slide groove 5 to replace the assistant in performing the pushing or pulling action.

[0040] In this embodiment, a telescopic spring is symmetrically installed on one side of the support frame 63. One end of the telescopic spring abuts against one side of the first foot pedal 61, so that when the patient's foot is placed on the first foot pedal 61, a buffer is provided and mechanical damage to the support frame 63 caused by gravity is prevented.

[0041] In this embodiment, the crank connecting rod 4 is symmetrically installed along the centerline of the second support part 2, and a strap is fixed between them to fix the patient's lower leg.

[0042] In this embodiment, one side of the bearing cavity 3 is an open structure, and a soft package 7 is fixed therebetween. The soft package 7 slides inside the bearing cavity 3. An ankle concave frame 8 is installed on one side of the soft package 7. One side of the ankle concave frame 8 is installed on one side of the support frame 63. When the support frame 63 moves, it drives the soft package 7 to move in the same direction. If the patient's leg is in a flat position, the soft package 7 provides positional support for the patient's lower leg. At the same time, the ankle concave frame 8 positions the patient's ankle, increasing the patient's comfort.

[0043] A stop 10 is symmetrically installed on one side of the soft package 7 and abuts against the inner side of the bearing cavity 3 to limit the soft package 7 and prevent the soft package 7 from sliding out of the bearing cavity 3.

[0044] Heating wire 11 is laid on the inner side of the support cavity 3. The heating wire 11 is electrically connected to an external thermostat (not shown in the figure). The purpose of adding heating wire 11 is to reduce the patient's discomfort when performing knee flexion exercises in cold weather, as patients are often exposed to the outside world. At the same time, the heat generated by the heating wire 11 accumulates inside the support cavity 3, which can increase the patient's blood circulation during knee flexion exercises and further improve the patient's recovery level during knee flexion exercises.

[0045] In summary, this invention improves training effectiveness by ensuring the stability and reliability of the knee flexion trainer through a precisely designed structure and high-performance components. Patients can perform efficient knee flexion training in a safe environment, thus improving rehabilitation outcomes.

[0046] This invention allows for personalized adjustments, utilizing adjustable support components, foot pedals, slide rails, and heating wires to meet individual patient needs. Patients can make precise adjustments based on their physical condition and training requirements to achieve optimal training results.

[0047] This invention is multifunctional; the soft padding and ankle support design not only provide comfortable support and placement but also increase the diversity and enjoyment of training. Patients can exercise and relax other parts of their body while performing knee flexion exercises.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 will 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 utility model.

Claims

1. A knee flexion exercise assistance trainer characterized by comprising: The utility model relates to a kind of leg supporting devices, including: First support part, (1) for supporting thigh part; Second support part, (2) for supporting knee joint, the second support part (2) rotates relative to first support part (1); Cavity (3) is carried; Chute (5) is opened in the two side surfaces of cavity (3) carried; Crank connecting rod (4), one end is respectively installed in the two sides of the connecting place of first support part (1) and second support part (2), the other end is limited to slide in chute (5); Rail body (9) is symmetrically installed in the inside of the cavity (3) carried; Pedal assembly (6) is slid in the inside of cavity (3) carried by rail body (9), and the pedal assembly (6) includes first pedal plate (61), second pedal plate (62), support frame (63), pulley (64), arc-shaped support plate (65) and compression spring (66), the second pedal plate (62) is hinged relative to first pedal plate (61), and the first pedal plate (61) and the second pedal plate (62) are installed on support frame (63), the pulley (64) is installed on the two sides of support frame (63), and pulley (64) is slid on rail body (9), and the arc-shaped support plate (65) is installed between second pedal plate (62) and support frame (63), and the two ends of compression spring (66) are respectively in contact with the side surface of second pedal plate (62) and arc-shaped support plate (65).

2. The knee flexion exercise assist trainer according to claim 1, wherein The side of support frame (63) is installed with lock concave block (67), and the side of lock concave block (67) is embedded with friction plate (68) and limiting block (69), and the side surface of one end of arc-shaped support plate (65) is respectively in contact with the side surface of friction plate (68) and limiting block (69).

3. The knee flexion exercise assistance trainer according to claim 2, characterized by, The side of support frame (63) is symmetrically installed with telescopic spring, and one end of telescopic spring is in contact with the side surface of first pedal plate (61).

4. The knee flexion exercise assistance trainer according to claim 3, characterized by, The crank connecting rod (4) is symmetrically installed along the midline of second support part (2), and is fixed with band between.

5. The knee flexion exercise assistance trainer according to claim 4, wherein The side of cavity (3) carried is open structure, and is fixed with soft package body (7) between, the soft package body (7) is slid in the inside of cavity (3) carried, and the side of soft package body (7) is installed with ankle concave frame (8), and the side of ankle concave frame (8) is installed with the side of support frame (63).

6. The knee flexion exercise assistance trainer according to claim 5, wherein The side of soft package body (7) is symmetrically installed with stop block (10), and is in contact with the inside of cavity (3) carried.

7. The knee flexion exercise assistance trainer according to claim 6, wherein The inside of cavity (3) carried is paved with heating wire (11), and heating wire (11) is electrically connected with external temperature controller.

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