Resistance adjusting device for bone joint rehabilitation training

Abstract

The utility model discloses a resistance adjusting device for bone joint rehabilitation training, which comprises a support base, a lifting component and a training execution component, the training execution component comprises a mounting base plate, a main upright post, at least two training pressure arms and resistance generators, and the number of the resistance generators corresponds to that of the training pressure arms; the near end of each training pressing arm is hinged to the main stand column, the far end of each training pressing arm is fixedly provided with a lower pedal, and each resistance generator is arranged between one training pressing arm and the installation base plate. The resistance generators are configured to provide different preset resistance values. The utility model has the following advantages and effects: different preset resistance values are respectively provided through different training pressing arms and corresponding resistance generators, and the height-adjustable lifting assembly is matched, so that optional personalized bone joint rehabilitation training is provided for a user.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a resistance adjustment device for bone and joint rehabilitation training. Background Technology

[0002] Joint rehabilitation training devices are primarily used to help patients restore mobility and muscle strength in their lower limb joints (such as the knee and hip joints), playing a crucial role, especially in postoperative rehabilitation. In this type of training, patients typically drive the device by repeatedly stepping down with their feet, thereby inducing flexion and extension movements of the relevant lower limb joints and subjecting them to a preset resistance load to enhance joint stability and the strength of surrounding muscles. However, existing devices in this field usually only have a fixed resistance curve, meaning that regardless of whether the user performs unilateral or bilateral alternating training, the magnitude and pattern of resistance are singular and unadjustable. This makes it difficult for the device to adapt to the needs of patients at different stages of rehabilitation: in the early stages of rehabilitation, patients have weaker muscles and require lower resistance to avoid secondary injury; as rehabilitation progresses, resistance needs to be gradually increased to continuously improve training effectiveness. The existing unchanging resistance settings cannot achieve personalized, progressive rehabilitation training, thus limiting rehabilitation efficiency and safety, and also affecting patients' motivation and commitment to training. Utility Model Content

[0003] The purpose of this invention is to provide a resistance adjustment device for bone and joint rehabilitation training to solve the problems mentioned in the background art.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] Resistance adjustment devices for musculoskeletal rehabilitation training include:

[0006] A support base placed on the ground;

[0007] A lifting assembly disposed at the upper end of the support base for vertical height adjustment; and

[0008] A training execution component disposed on the upper end of the lifting component; wherein the training execution component includes:

[0009] A mounting base plate fixedly connected to the upper end of the lifting assembly;

[0010] A main column is vertically fixed on the mounting base plate;

[0011] At least two training arms, each with its proximal end hinged to a main column, allowing each arm to swing vertically around its hinge point; and each arm has a fixed footplate at its distal end for easy pressing; and

[0012] At least two independently configured resistance generators are provided, the number of which corresponds to the number of training pressure arms, and each resistance generator is disposed between a training pressure arm and a mounting base plate; each resistance generator is configured to provide a preset resistance value of different magnitude; each training pressure arm swings downward against the resistance of the corresponding resistance generator when subjected to a downward stepping force, and automatically swings upward under the reset action of the corresponding resistance generator after the downward stepping force is removed, thereby achieving automatic return to position.

[0013] By adopting the above technical solution, and by setting up multiple independent swingable training arms and corresponding independent resistance generators, users can conduct selective and differentiated rehabilitation training. Each resistance generator can be preset with different resistance values ​​to adapt to the needs of patients with limb muscle imbalances or different rehabilitation stages, achieving progressive and personalized resistance adjustment. After the pressure is removed, the training arms can automatically return to their original position with the help of the resistance generator's reset action, improving the convenience of use and the continuity of training movements, which is conducive to maintaining the correct training rhythm and reducing patient fatigue.

[0014] A further provision is that the resistance generator is specifically a spring-type damping structure, which includes:

[0015] A movable hinge joint that is hinged to the corresponding training pressure arm;

[0016] A mounting bracket fixedly mounted on the upper end of the mounting base; and

[0017] An elastomer, pre-compressed between the movable hinge and the mounting bracket, provides resistance to stepping down through its reaction force when further compressed, and drives the training arm to automatically return to its original position through its elastic restoring force.

[0018] By adopting the above technical solution, a spring-type damping structure is used as the resistance generator. The structure is simple, reliable, low-cost, and easy to maintain. The pre-compressed elastomer provides resistance and rebound force, making the resistance during the stepping process smooth and the return to position gentle, avoiding mechanical impact and improving training comfort and safety.

[0019] A further provision is that a pressure head is fixedly provided at the lower end of the movable hinge joint, and the pressure head has a plane for pressing the upper end of the elastic body; the upper end of the mounting support has an upwardly extending upper rod, which is inserted into the inner ring of the elastic body, and an annular flange for supporting the elastic body is fixedly provided on the outer periphery of the lower end of the upper rod.

[0020] By adopting the above technical solution, the elastomer obtains stable axial guidance and end face support during compression and rebound, preventing the elastomer from tilting, twisting or detaching, and ensuring the linearity and consistency of resistance output; the upper rod is inserted into the inner ring of the elastomer to further limit its lateral deformation and extend the service life of the elastomer.

[0021] A further feature is that the upper end of the upper rod has a guide hole along the axial direction, and the lower end of the pressure head has a guide shaft extending downward, the guide shaft being slidably inserted into and confined within the guide hole.

[0022] By adopting the above technical solution, the swaying that occurs during the swinging process is eliminated, and the stability of the movement is improved.

[0023] A further feature is that the hinge points of each training arm on the main column are distributed at different positions along the axial direction of the main column.

[0024] By adopting the above technical solutions, users can have different starting angles and swing trajectories of their feet when training separately, which can simulate different joint ranges of motion and muscle group force exertion patterns, thereby providing a variety of training posture options and enhancing the comprehensiveness and adaptability of rehabilitation training.

[0025] A further detail is that the lengths of the training arms are all different.

[0026] By adopting the above technical solution, the lever arm length acting on the resistance generator varies when the user steps down, thus allowing for different actual resistance sensations under the same resistance generator settings. This further enriches the variations in training intensity and modes, which is beneficial for the implementation of progressive rehabilitation plans.

[0027] A further provision is that the lifting assembly includes a lifting top plate fixed to the mounting base plate, a lifting bottom plate located below the lifting top plate, and a plurality of lifting units connected between the lifting top plate and the lifting bottom plates.

[0028] Each lifting unit includes a first hinge seat and a second hinge seat fixed to the lower end of the lifting top plate and the upper end of the lifting base plate, respectively. A first hinge arm and a second hinge arm are respectively hinged to the first hinge seat and the second hinge seat, and the first hinge arm and the second hinge arm are hinged to each other. A drive shaft extending out of the second hinge seat is fixedly provided at the end of the second hinge arm that is hinged to the second hinge seat. A secondary tooth is fixedly provided on the drive shaft. The lifting base plate is fixedly provided with a number of drive motors that are the same as the number of lifting units. A main tooth is fixedly provided on the output shaft of each drive motor. The main tooth on each drive motor corresponds to a secondary tooth extending from the second hinge seat, and they are connected by a transmission belt.

[0029] By adopting the above technical solution, synchronous lifting is achieved through a transmission toothed belt, making the height adjustment of the training execution component stable, precise, and with strong load-bearing capacity. It can adapt to the needs of users of different heights or the height requirements of different training postures. The drive motor driving method is easy to operate and precise to control, which is conducive to realizing automatic adjustment and improving the practicality of the equipment and user experience.

[0030] A further provision is that an upwardly extending limiting post is fixedly installed at the center of the upper end of the lifting base plate, and a limiting hole is opened at the upper end of the limiting post along the axial direction. A downwardly extending limiting shaft is fixedly installed at the center of the lower end of the lifting top plate, and the limiting shaft is slidably inserted into and limited within the limiting hole.

[0031] By adopting the above technical solution, the horizontal displacement and torsion during the lifting process are effectively constrained, ensuring the vertical stability and alignment of the lifting component, and preventing jamming or shaking caused by off-center loading or asymmetrical force.

[0032] In summary, this utility model has the following beneficial effects: by providing different preset resistance values ​​through different training arms and corresponding resistance generators, and in conjunction with a height-adjustable lifting component, it provides users with a choice of personalized bone and joint rehabilitation training. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0034] Figure 2 for Figure 1 Enlarged view of section A;

[0035] Figure 3 This is a schematic diagram of the assembly of the pressure head, upper rod, annular flange and elastomer in the embodiment;

[0036] Figure 4 This is a schematic diagram of the lifting component in the embodiment.

[0037] In the diagram: 11. Support base; 21. Mounting base plate; 22. Main column; 221. Connecting plate; 23. Training pressure arm; 24. Lower step plate; 31. Movable hinge joint; 32. Mounting support; 33. Elastomer; 41. Pressure head; 51. Upper rod; 52. Annular flange; 61. Guide hole; 62. Guide shaft; 71. Lifting top plate; 72. Lifting bottom plate; 731. First hinge seat; 732. Second hinge seat; 741. First hinge arm; 742. Second hinge arm; 81. Drive shaft; 82. Secondary gear; 83. Drive motor; 84. Main gear; 85. Limiting post; 86. Limiting shaft. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings.

[0039] like Figures 1-4 As shown;

[0040] This embodiment discloses a resistance adjustment device for bone and joint rehabilitation training, including a support base 11, a lifting component, and a training execution component.

[0041] The upper end of the support base 11 is equipped with a lifting component, which is used for vertical height adjustment to accommodate users of different heights or different training postures.

[0042] The upper end of the lifting assembly is provided with a training execution component; specifically, the training execution component is the part where the user directly performs training operations, and it includes a mounting base plate 21, a main column 22, at least two training pressure arms 23, and an independent resistance generator corresponding to the number of training pressure arms 23.

[0043] Mounting base plate 21 is fixedly connected to the upper end of the lifting component, serving as the mounting base for the training execution component; the main column 22 is a vertical rigid column, with its lower end vertically fixed on the mounting base plate 21.

[0044] In this embodiment, there are two training arms 23. The proximal end of each training arm 23 (the end closest to the main column 22) is hinged to the main column 22 via a pivot. More specifically, one training arm 23 is hinged above the main column 22 via a connecting plate 221, while the other training arm 23 is hinged to the middle of the main column 22. This hinge structure allows the two training arms 23 to swing up and down in the vertical plane around their respective hinge points. The hinge points of the two training arms 23 on the main column 22 are distributed at different positions along the axial direction of the main column 22, i.e., one is installed higher and the other is installed lower. This allows the user's foot to have different starting angles and downward swing trajectories when placed on the footrest 24, thus providing different training modes. In addition, the lengths of the two training arms 23 can also be designed to be different, so that when the user's foot applies downward force to different training arms 23, the lever arm acting on the corresponding resistance generator will differ, further enriching the training experience. At the distal end of each training arm 23 (the end furthest from the main column 22), a footrest 24 is fixedly installed for easy footing. The surface of the footrest 24 is usually provided with anti-slip texture or a soft covering layer to increase the comfort and stability of foot contact.

[0045] The number of resistance generators corresponds to the number of training arms 23, with each training arm 23 equipped with an independent resistance generator. Each resistance generator is positioned between a training arm 23 and the mounting base 21. Two resistance generators are pre-configured to provide different preset resistance values. The specific structure of the resistance generator can take various forms; in a preferred embodiment, it is a spring-dampened structure, specifically including a movable hinge joint 31, a mounting support 32, and an elastic body 33 (such as a spring). The upper end of the movable hinge joint 31 is hinged to the middle portion of the corresponding training arm 23, allowing it to move as the training arm 23 swings. The mounting support 32 is fixedly mounted on the upper end of the mounting base 21, and the elastic body 33 is pre-compressed between the movable hinge joint 31 and the mounting support 32. When the user's foot presses down on the training arm 23, the training arm 23 swings downward, causing the movable hinge joint 31 to press down, further compressing the elastic body 33. The reaction force generated by the elastic body 33 is the resistance that needs to be overcome when pressing down. When the foot is lifted and the downward pressing force is removed, the compressed elastic body 33 releases its elastic potential energy, generates elastic restoring force, and pushes the movable hinge joint 31 and the training pressure arm 23 to swing upward, thereby realizing the automatic return of the training pressure arm 23.

[0046] To optimize the working stability of the elastomer 33, a pressure head 41 can be fixedly installed at the lower end of the movable hinge joint 31. This pressure head 41 has a flat surface for pressing the upper end of the elastomer 33. The upper end of the mounting support 32 has an upwardly extending upper rod 51, which is inserted precisely into the inner ring of the elastomer 33, serving as a guide and preventing the spring from bending. On the outer periphery of the lower end of the upper rod 51, an annular flange 52 is fixedly installed to support and position the elastomer 33 from below. Furthermore, a guide hole 61 can be axially formed at the upper end of the upper rod 51, and a downwardly extending guide shaft 62 can be provided at the lower end of the pressure head 41. This guide shaft 62 is slidably inserted into and confined within the guide hole 61, thereby providing more precise linear guidance for the up-and-down movement of the pressure head 41.

[0047] The lifting assembly includes a lifting top plate 71, a lifting bottom plate 72, and multiple lifting units connected between the lifting top plate 71 and the lifting bottom plate 72. In this embodiment, the number of lifting units is four. The lifting top plate 71 is fixedly connected to the mounting base 21 of the training execution assembly; the lifting bottom plate 72 is located below the lifting top plate 71 and connected to the support base 11. Each lifting unit includes a first hinge seat 731, a second hinge seat 732, a first hinge arm 741, and a second hinge arm 742. The first hinge seat 731 is fixed to the lower end of the lifting top plate 71, and the second hinge seat 732 is fixed to the upper end of the lifting bottom plate 72. One end of the first hinge arm 741 is hinged to the first hinge seat 731, and one end of the second hinge arm 742 is hinged to the second hinge seat 732. Simultaneously, the other ends of the first hinge arm 741 and the second hinge arm 742 are hinged together. Four such lifting units are distributed around a central point. A drive shaft 81 is fixedly installed at the end of the second articulated arm 742 that is hinged to the second articulated seat 732. The drive shaft 81 extends out of the second articulated seat 732. A secondary tooth 82 is fixedly installed on the drive shaft 81. Four drive motors 83 are fixedly installed on the lifting base plate 72. A main tooth 84 is fixedly installed on the output shaft 921 of each drive motor 83. The main tooth 84 on each drive motor 83 corresponds to a secondary tooth 82 extending from the second articulated seat 732, and they are connected by a transmission belt. When all drive motors 83 run synchronously, the main tooth 84 rotates, which drives the secondary tooth 82 and the drive shaft 81 to rotate through the transmission belt. The drive shaft 81 drives the second articulated arm 742 to rotate around its hinge point with the second articulated seat 732. Thus, through the linkage of the first and second articulated arms 742, the lifting top plate 71 is pushed to rise or fall smoothly relative to the lifting base plate 72, realizing the height adjustment of the entire training execution component.

[0048] To ensure the stability of the lifting process and prevent horizontal displacement or torsion between the top plate and the bottom plate, an upwardly extending limiting post 85 can be fixedly installed at the center of the upper end of the lifting bottom plate 72. The upper end of the limiting post 85 has a limiting hole along the axial direction. Correspondingly, a downwardly extending limiting shaft 86 is fixedly installed at the center of the lower end of the lifting top plate 71. The limiting shaft 86 is slidably inserted into and limited in the limiting hole, forming a central guiding structure to ensure the accuracy and stability of the vertical movement.

[0049] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A resistance adjustment device for bone and joint rehabilitation training, characterized in that, include: A support base (11) placed on the ground; A lifting assembly disposed on the upper end of the support base (11) is used for vertical height adjustment; as well as A training execution component disposed on the upper end of the lifting component; wherein the training execution component includes: A mounting base plate (21) is fixedly connected to the upper end of the lifting assembly; A main column (22) is vertically fixed on the mounting base plate (21); At least two training arms (23), the proximal end of each training arm (23) is hinged to the main column (22), allowing each training arm (23) to swing vertically around its respective hinge point; and the distal end of each training arm (23) is fixedly provided with a foot plate (24) for easy stepping; and At least two independently configured resistance generators are provided, the number of which corresponds to the number of the training pressure arms (23), and each resistance generator is respectively disposed between a training pressure arm (23) and a mounting base plate (21); each resistance generator is configured to provide a preset resistance value of different magnitudes; each training pressure arm (23) swings downward against the resistance of the corresponding resistance generator when subjected to a downward stepping force, and automatically swings upward under the reset action of the corresponding resistance generator after the downward stepping force is removed, thereby achieving automatic return to position.

2. The resistance adjustment device for bone and joint rehabilitation training according to claim 1, characterized in that: The resistance generator is specifically a spring-type damping structure, which includes: A movable hinge joint (31) that is hinged to the corresponding training pressure arm (23); A mounting bracket (32) fixedly mounted on the upper end of the mounting base (21); and An elastomer (33) is pre-compressed between the movable hinge (31) and the mounting bracket (32), providing resistance to stepping down through its reaction force when further compressed, and driving the training arm (23) to automatically return to its original position through its elastic restoring force.

3. The resistance adjustment device for bone and joint rehabilitation training according to claim 2, characterized in that: The lower end of the movable hinge joint (31) is fixedly provided with a pressure head (41), the pressure head (41) having a plane for pressing the upper end of the elastic body (33); the upper end of the mounting support (32) has an upwardly extending upper rod (51), the upper rod (51) is inserted into the inner ring of the elastic body (33), and the outer periphery of the lower end of the upper rod (51) is fixedly provided with an annular flange (52) for bearing the elastic body (33).

4. The resistance adjustment device for bone and joint rehabilitation training according to claim 3, characterized in that: The upper end of the upper rod (51) has a guide hole (61) along the axial direction, and the lower end of the pressure head (41) has a guide shaft (62) extending downward. The guide shaft (62) is slidably inserted into and confined within the guide hole (61).

5. The resistance adjustment device for bone and joint rehabilitation training according to claim 1, characterized in that: The hinge points of each training arm (23) on the main column (22) are distributed at different positions along the axial direction of the main column (22).

6. The resistance adjustment device for bone and joint rehabilitation training according to claim 1, characterized in that: The lengths of the training arm (23) described in each case are different.

7. The resistance adjustment device for bone and joint rehabilitation training according to claim 1, characterized in that: The lifting assembly includes a lifting top plate (71) fixed to the mounting base plate (21), a lifting bottom plate (72) located below the lifting top plate (71), and a plurality of lifting units connected between the lifting top plate (71) and the lifting bottom plate (72). Each of the lifting units includes a first hinge seat (731) and a second hinge seat (732) respectively fixed to the lower end of the lifting top plate (71) and the upper end of the lifting bottom plate (72). A first hinge arm (741) and a second hinge arm (742) are respectively hinged to the first hinge seat (731) and the second hinge seat (732), and the first hinge arm (741) and the second hinge arm (742) are hinged to each other. One end of the second hinge arm (742) that is hinged to the second hinge seat (732) is fixedly disposed. A drive shaft (81) extends from a second hinge seat (732), and a secondary tooth (82) is fixedly provided on the drive shaft (81); a drive motor (83) with the same number as the lifting unit is fixedly provided on the lifting base plate (72), and a main tooth (84) is fixedly provided on the output shaft (921) of each drive motor (83). The main tooth (84) on each drive motor (83) corresponds to a secondary tooth (82) extending from the second hinge seat (732), and a transmission is formed by a transmission belt.

8. The resistance adjustment device for bone and joint rehabilitation training according to claim 7, characterized in that: An upwardly extending limiting post (85) is fixedly provided at the center of the upper end of the lifting base plate (72). A limiting hole is opened at the upper end of the limiting post (85) along the axial direction. A downwardly extending limiting shaft (86) is fixedly provided at the center of the lower end of the lifting top plate (71). The limiting shaft (86) is slidably inserted into and limited within the limiting hole.

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