An arm rehabilitation device

Abstract

This invention relates to the field of arm rehabilitation training technology and discloses an arm rehabilitation device, including a rehabilitation table. A training seat is fixedly installed on the top of the rehabilitation table, and a placement platform is provided on one side of the training seat. The placement platform is fixedly installed on the top of the rehabilitation table, and several counterweights are placed on the placement platform. A counterweight assembly is provided on one side of the training seat. The counterweight assembly is used to adjust different numbers of counterweights for tensile testing. The patient can flexibly adjust the number of counterweights in the original position using the counterweight assembly, avoiding the inconvenience of having to get up and move every time the counterweights are adjusted. This saves the patient's time and energy during training, allowing the patient to focus more on the training itself and improve training efficiency. For patients with limited mobility, it avoids the physical burden and potential risks that may be caused by frequent getting up and moving.

Description

Technical Field

[0001] This invention belongs to the field of arm rehabilitation training technology: specifically, it relates to an arm rehabilitation device. Background Technology

[0002] Arm rehabilitation devices are medical devices or assistive tools designed to assist in the recovery of upper limb (including shoulder, elbow, wrist and hand) function. They aim to help patients with upper limb motor dysfunction caused by disease, injury or surgery to restore mobility, enhance muscle strength, improve joint flexibility and promote the reconstruction of nerve function through physical means, biofeedback, intelligent control and other technologies.

[0003] Currently, in arm muscle strength recovery training, patients generally use arm rehabilitation devices to achieve the goal of restoring arm function. During the training process, the number of weights is increased or decreased so that the arm bears different intensities of force when stretched, thereby achieving the exercise of arm muscles.

[0004] However, patients often need to get up and move around when adjusting the number of counterweights in existing devices, which not only consumes time and energy but may also affect training focus and reduce training efficiency. At the same time, for patients with limited mobility, frequent getting up and moving around can bring additional physical burden and potential risks.

[0005] Therefore, the present invention provides an arm rehabilitation device. Summary of the Invention

[0006] To overcome the shortcomings of the prior art: to solve at least one technical problem raised in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The arm rehabilitation device of the present invention includes a rehabilitation table, a training seat fixedly installed on the top of the rehabilitation table, a placement platform provided on one side of the training seat, the placement platform fixedly installed on the top of the rehabilitation table, a plurality of counterweights placed on the placement platform, a connecting frame provided above the counterweights, a tension rope fixedly connected to the top of the connecting frame, a triangular rod fixedly connected to the end of the tension rope away from the connecting frame, a tension rod fixedly connected to the bottom of the triangular rod, a counterweight assembly provided on one side of the training seat, the counterweight assembly being used to adjust different numbers of counterweights for tension testing, and an adjustment assembly provided on the top of the tension rope, the adjustment assembly being used to adjust the lateral position and longitudinal height of the tension rod.

[0008] Preferably, the counterweight assembly includes two plug-in rods and several counterweight blocks stacked on top of each other. Each counterweight block has a round hole at the center of both sides. The plug-in rods can be inserted into and adapted to the inner wall of the round hole. A fixed seat is provided on one side of each plug-in rod. A movable block is slidably connected to the inner wall of each fixed seat. The inner wall of the movable block is slidably connected to the outer wall of the plug-in rod. A pusher is attached to the bottom of each movable block. A movable rod is fixedly connected to the bottom of the pusher. A disengagement component is provided on one side of each plug-in rod to separate the plug-in rod from the round hole. A lifting component is provided on one side of the movable rod to drive the pusher to rise and fall.

[0009] Preferably, the lifting assembly includes two connecting rods, both of which are slidably connected to the top of the rehabilitation table. One end of each connecting rod is fixedly connected to a trapezoidal platform, and an inclined slide is fixedly connected above the inclined surface of the trapezoidal platform. The inner wall of the inclined slide is slidably connected to the outer wall of the movable rod. The other end of each connecting rod is fixedly connected to a push-pull rod, and the top of each push-pull rod is fixedly connected to a handle cap. The two handle caps are located on both sides of the training seat. A locking component is provided on the outside of the push-pull rod, which is used to allow the handle caps to move forward and backward in a step-by-step manner.

[0010] Preferably, the positioning assembly includes two adjustable housings, which are respectively fixedly connected to both sides of the training seat. The top and bottom surfaces of the adjustable housings are provided with sliding grooves. The push-pull rod is slidably connected to the sliding groove. The outer wall of the push-pull rod is fixedly connected to a limit block. One side of the limit block is slidably connected to the side wall of the adjustable housing. Multiple limit springs are fixedly connected to the inner side of the adjustable housing. A limit seat is fixedly connected to one end of each of the multiple limit springs. One end of the limit seat is an isosceles trapezoid, and one side of the limit seat is designed as a triangular groove that matches the isosceles trapezoidal shape of one end of the limit block.

[0011] Preferably, the number of triangular grooves on one side of the limiting seat is the same as the number of counterweights, and multiple stop plates are fixedly connected to the top of the adjusting housing. The number of stop plates is the same as the number of triangular grooves, and their positions correspond to each other.

[0012] Preferably, the disengagement component includes a movable rod, the outer wall of which is slidably connected to the inner wall of the training seat, a pressing plate fixedly connected to one end of the movable rod, a triangular block fixedly connected to the outside of the plug-in rod, the surfaces of the triangular block and the pressing plate being inclined, a return spring fixedly connected to one side of the movable block, and the end of the return spring away from the movable block being fixedly connected to one end of the plug-in rod.

[0013] Preferably, an inner slider is fixedly connected to one side of each of the two fixed seats, and a second fixed seat is slidably connected to the outer wall of each inner slider. The second fixed seats are fixedly installed on the top of the rehabilitation table. A shock-absorbing spring is fixedly connected between the top of the inner slider and the top wall of the second fixed seat. The sliding friction between the inner slider and the second fixed seat is much greater than the sliding friction between the movable block and the first fixed seat. The two ends of the connecting frame are fixedly connected to the top of the two fixed seats.

[0014] Preferably, the top of the placement platform is fixedly connected with multiple guardrails, and the inner walls of the multiple guardrails are tightly fitted to the outer edge of the counterweight.

[0015] Preferably, the adjustment assembly includes guide wheel one and guide wheel two. Guide wheel one is slidably connected to the outer wall of the tension rope. A clamping wheel is fixedly connected to the shaft of guide wheel two. A straight telescopic rod is fixedly connected to the bottom of the clamping wheel. A vertical plate frame is fixedly connected to the top of the rehabilitation table. A receiving plate is fixedly connected to one side of the vertical plate frame. The straight telescopic rod is fixedly connected above the receiving plate.

[0016] Preferably, a hinge seat is fixedly connected to one side of the vertical plate frame, and a hinge rod is hinged to the inner wall of the hinge seat. One end of the hinge rod is rotatably connected to the shaft of the guide wheel. An arc-shaped telescopic rod is fixedly connected to the top of the vertical plate frame, and one end of the arc-shaped telescopic rod is fixedly connected to the side wall of the hinge rod.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The arm rehabilitation device described in this invention allows the patient to flexibly adjust the number of counterweights in the original position using a counterweight assembly, avoiding the inconvenience of having to get up and move every time the counterweights are adjusted. This saves the patient time and energy during training, allowing the patient to focus more on the training itself and improve training efficiency. Furthermore, for some patients with limited mobility, it avoids the physical burden and potential risks that may result from frequent getting up and moving.

[0019] 2. The arm rehabilitation device of the present invention, through the adjustment of components, makes the device better adaptable to patients of different body types, ensuring that the patient's elbow and shoulder can be at a natural angle during training, and the grip position is at the same height as the shoulder joint, thereby improving the comfort and effectiveness of training. Attached Figure Description

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Figure 1 This is a perspective view of the entire invention;

[0022] Figure 2 This is a schematic diagram of the structure of the training seat in this invention;

[0023] Figure 3This is a schematic diagram of the trapezoidal platform structure in this invention;

[0024] Figure 4 This is a schematic diagram of the structure at the limiting block in this invention;

[0025] Figure 5 This is a schematic diagram of the structure at the counterweight in this invention;

[0026] Figure 6 This is a schematic diagram of the structure of the jacking component in this invention;

[0027] Figure 7 This is a schematic diagram of the structure at the movable rod in this invention;

[0028] Figure 8 This is a schematic diagram of the extrusion plate structure in this invention;

[0029] Figure 9 This is a schematic diagram of the structure of the two fixed bases in this invention;

[0030] Figure 10 This is a schematic diagram of the vertical plate frame structure in this invention.

[0031] In the diagram: 1. Rehabilitation table; 2. Training chair; 3. Placement platform; 4. Counterweight; 5. Connecting frame; 6. Tension rope; 7. Triangular bar; 8. Tension bar; 9. Connecting rod; 10. Movable block; 11. Fixed seat one; 12. Pushing component; 13. Movable rod; 14. Inclined slide; 15. Trapezoidal platform; 16. Connecting rod; 17. Push-pull rod; 18. Handle cap; 19. Adjustable housing; 20. Slide groove; 21. Limiting block; 22. 23. Limiting seat; 24. Limiting spring; 25. Stop plate; 26. Moving rod; 27. Pressing plate; 28. Triangular block; 29. ​​Return spring; 30. Inner slider; 31. Fixed seat two; 32. Shock-absorbing spring; 33. Vertical plate frame; 34. Guide wheel one; 35. Guide wheel two; 36. Hinge rod; 37. Hinge seat; 38. Arc-shaped telescopic rod; 39. Support plate; 40. Straight telescopic rod; 41. Clamping wheel; 42. Guardrail. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] like Figures 1 to 10As shown, the present invention provides a technical solution: an arm rehabilitation device, including a rehabilitation table 1, a training seat 2 fixedly installed on the top of the rehabilitation table 1, a placement platform 3 provided on one side of the training seat 2, the placement platform 3 fixedly installed on the top of the rehabilitation table 1, a plurality of counterweights 4 placed on the placement platform 3, a connecting frame 5 provided on the top of the counterweights 4, a tension rope 6 fixedly connected to the top of the connecting frame 5, a triangular rod 7 fixedly connected to the end of the tension rope 6 away from the connecting frame 5, a tension rod 8 fixedly connected to the bottom of the triangular rod 7, a counterweight assembly provided on one side of the training seat 2, the counterweight assembly being used to adjust different numbers of counterweights 4 for tension testing, and an adjustment assembly provided on the top of the tension rope 6, the adjustment assembly being used to adjust the lateral position and longitudinal height of the tension rod 8.

[0034] During operation: This device is mainly used for patients to perform strength recovery training on their arm muscles during the rehabilitation phase. The rehabilitation table 1 serves as the basic support structure of the entire device, supporting components such as the training seat 2, the placement platform 3, and the counterweight assembly, thereby ensuring the overall stability of the device.

[0035] In actual use, patients can adjust the lateral position or longitudinal height of the pull bar 8 according to their own arm length and height using the adjustment components. The lateral position adjustment function allows the pull bar 8 to move left and right, thus adapting to patients with different arm spans and ensuring that the patient's elbow and shoulder are at a natural angle during training. The longitudinal height adjustment function can adjust the height of the pull bar 8 according to the patient's height, so that the grip position is at the same height as the shoulder joint, effectively reducing the occurrence of compensatory movements.

[0036] During training, the patient first sits on the training chair 2. Once seated, the patient can perform pull tests by adjusting the number of weight blocks 4 using the weight assembly without moving. The weight assembly allows for flexible adjustment of the number of weight blocks 4, enabling the patient to start with low-intensity training and gradually increase the load to avoid over-fatigue or injury, thus meeting the strength training needs of different rehabilitation stages. The connecting frame 5 spans above the placement platform 3, with a tension rope 6 fixed to its top. The other end of the tension rope 6 is connected to the triangular bar 7, forming an adjustable pull training system. The bottom of the triangular bar 7 is connected to the pull bar 8, allowing the patient to perform upper limb stretching training by gripping the pull bar 8. The triangular structure design enhances the stability of the entire system.

[0037] Through the above implementation method, the patient can flexibly adjust the number of counterweights 4 in the original position using the counterweight assembly, avoiding the inconvenience of having to get up and move every time the counterweights 4 are adjusted. This saves the patient time and energy during training, allowing the patient to focus more on the training itself and improve training efficiency. For some patients with limited mobility, it avoids the physical burden and potential risks that may be caused by frequent getting up and moving. Furthermore, by adjusting the assembly, the device can better adapt to patients of different body types, ensuring that the patient's elbows and shoulders are at a natural angle during training, and that the grip position is at the same height as the shoulder joint, thus improving the comfort and effectiveness of training.

[0038] like Figures 5 to 6 As shown, the counterweight assembly includes two plug-in rods 9 and several counterweight blocks 4 stacked on top of each other. Each counterweight block 4 has a round hole at the center of both sides. The plug-in rods 9 can be inserted into the inner wall of the round hole and are mutually compatible. A fixed seat 11 is provided on one side of each plug-in rod 9. A movable block 10 is slidably connected to the inner wall of each fixed seat 11. The inner wall of the movable block 10 is slidably connected to the outer wall of the plug-in rod 9. A pusher 12 is attached to the bottom of each movable block 10. A movable rod 13 is fixedly connected to the bottom of the pusher 12. A disengagement component is provided on one side of the plug-in rod 9 to separate the plug-in rod 9 from the round hole. A lifting component is provided on one side of the movable rod 13 to drive the pusher 12 to rise and fall.

[0039] During operation: When the counterweight assembly is in its initial state, one end of the plug rod 9 is inserted into the round hole of one of the counterweight blocks 4, as determined by the patient's previous training needs or initial settings;

[0040] When the patient needs to reduce the number of counterweights 4, the disengagement component is first used to separate the insertion rod 9 from the currently inserted circular hole. At this time, the insertion rod 9 will adaptively slide on the inner wall of the movable block 10, preparing for subsequent repositioning. The lifting component drives the movable rod 13 and the pusher 12 to rise. The pusher 12 pushes the movable block 10 to slide along the inner wall of the fixed seat 11. Due to the step-by-step rise of the movable block 10, the insertion rod 9 can be gradually aligned with the circular hole on the side of any counterweight 4, realizing the reduction of the counterweight. 4. Reduction in quantity: When it is necessary to increase the number of counterweights 4, the lifting component lowers the pusher 12, and the movable block 10 descends step by step under its own gravity, but the bottom always remains in contact with the top of the pusher 12. As the movable block 10 descends, the insertion rod 9 gradually aligns with the round hole of the lower counterweight 4, thereby increasing the number of counterweights 4. After the adjustment is completed, the disengagement component is reset, so that the insertion rod 9 is inserted into the round hole of the corresponding counterweight 4, ensuring the stability and safety of the counterweight component.

[0041] like Figures 3 to 4As shown, the lifting assembly includes two connecting rods 16, which are slidably connected to the top of the rehabilitation table 1. One end of each connecting rod 16 is fixedly connected to a trapezoidal platform 15. An inclined slide 14 is fixedly connected above the inclined surface of the trapezoidal platform 15. The inner wall of the inclined slide 14 is slidably connected to the outer wall of the movable rod 13. The other end of each connecting rod 16 is fixedly connected to a push-pull rod 17. A handle cap 18 is fixedly connected to the top of each push-pull rod 17. The two handle caps 18 are located on both sides of the training seat 2. A locking assembly is provided on the outside of the push-pull rod 17. The locking assembly is used to make the handle cap 18 move forward and backward in a step-like manner.

[0042] During operation: When it is necessary to reduce the number of counterweights 4 to adjust the training weight, push the handle cap 18 forward. The handle cap 18 drives the connecting rod 16 and the trapezoidal platform 15 forward through the push-pull rod 17. The sliding connection between the connecting rod 16 and the rehabilitation table 1 ensures the stability of the movement. When the trapezoidal platform 15 moves, it will drive the tilting slide 14 forward together. During the movement of the tilting slide 14, since part of the top of the pusher 12 is located in the inner wall of the fixed seat 11, the pusher 12 and the movable rod 13 can only move upward, which in turn causes the movable block 10 and the plug rod 9 to move upward, realizing the counterweight... The number of weight blocks 4 is reduced; similarly, moving the handle cap 18 backward can increase the number of weight blocks 4. During the movement, the handle cap 18 moves forward and backward in a step-by-step manner through the locking component, ensuring that the distance that the connecting rod 9 and the movable block 10 move up or down each time is exactly the thickness of the weight block 4. This ensures that the connecting rod 9 is aligned with the side of the round hole of any weight block 4 after each movement. In addition, the handle cap 18 is set on both sides of the training seat 2, which greatly facilitates the patient and allows them to easily and independently adjust the training weight while sitting on the training seat 2.

[0043] like Figures 3 to 4 As shown, the positioning assembly includes two adjustable housings 19, which are fixedly connected to both sides of the training seat 2. The top and bottom surfaces of the adjustable housings 19 are provided with sliding grooves 20. The push-pull rod 17 is slidably connected to the sliding grooves 20. The outer wall of the push-pull rod 17 is fixedly connected to a limiting block 21. One side of the limiting block 21 is slidably connected to the side wall of the adjustable housing 19. Multiple limiting springs 23 are fixedly connected to the inner side of the adjustable housing 19. A limiting seat 22 is fixedly connected to one end of each of the multiple limiting springs 23. One end of the limiting seat 22 is an isosceles trapezoid, and one side of the limiting seat 22 is designed as a triangular groove, which matches the isosceles trapezoidal shape of one end of the limiting block 21.

[0044] During operation: When the patient pushes the handle cap 18 forward or backward, the limiting block 21 will slide forward or backward accordingly inside the adjusting housing 19. During the sliding process, the limiting block 21 will squeeze the limiting seat 22, causing it to slide inside the adjusting housing 19. At the same time, the movement of the limiting seat 22 will squeeze the limiting spring 23, causing it to deform. When the limiting block 21 moves into the triangular groove at any point of the limiting seat 22, the limiting seat 22 will reset under the elastic force of the limiting spring 23, firmly locking the limiting block 21 in the triangular groove. Therefore, each time the limiting block 21 moves, it will accurately engage in the triangular groove of the limiting seat 22, providing the patient with obvious movement feedback, so that the plug rod 9 is aligned with the side of the round hole of any counterweight 4 after each movement.

[0045] like Figures 3 to 4 As shown, the number of triangular grooves on one side of the limiting seat 22 is the same as the number of counterweights 4, and multiple stop plates 24 are fixedly connected to the top of the adjusting housing 19. The number of stop plates 24 is the same as the number of triangular grooves, and their positions correspond to each other.

[0046] During operation: By setting the number of triangular grooves to be the same as the number of counterweights 4, the number of times the handle cap 18 can move in steps is exactly the same as the number of counterweights 4. The counterweights 4 can be adjusted all at once or all at once. The setting plate 24 can indicate the number of counterweights 4 currently being trained by the patient.

[0047] like Figures 7 to 8 As shown, the disengagement assembly includes a movable rod 25, the outer wall of which is slidably connected to the inner wall of the training seat 2. One end of the movable rod 25 is fixedly connected to a pressing plate 26. A triangular block 27 is fixedly connected to the outside of the plug-in rod 9. The surfaces of the triangular block 27 and the pressing plate 26 adjacent to each other are inclined surfaces. A return spring 28 is fixedly connected to one side of the movable block 10. The end of the return spring 28 away from the movable block 10 is fixedly connected to one end of the plug-in rod 9.

[0048] During operation: Before adjusting the number of counterweights 4, the patient first pushes the moving rods 25 on both sides to slide on one side of the training seat 2. The moving rods 25 will drive the squeezing plate 26 to move. The squeezing plate 26 will squeeze the triangular block 27, so that the insertion rod 9 will first disengage from the round hole of the current counterweight 4. The vertical height of the squeezing plate 26 is greater than the height of all the counterweights 4 stacked together, ensuring that the insertion rod 9 can be pushed out when it is in the round hole of any counterweight 4. When the insertion rod 9 disengages from the round hole, it will stretch the return spring 28 and deform. After adjusting the number of counterweights 4, the patient pulls the moving rod 25 to reset. The triangular block 27 and the insertion rod 9 are reset under the reaction force of the return spring 28 and re-inserted into the round hole of the current corresponding counterweight 4.

[0049] like Figure 5 and Figure 9 As shown, an inner slider 29 is fixedly connected to one side of each of the two fixed seats 11. A fixed seat 30 is slidably connected to the outer wall of each inner slider 29. The fixed seats 30 are fixedly installed on the top of the rehabilitation table 1. A shock-absorbing spring 31 is fixedly connected between the top of the inner slider 29 and the top wall of the fixed seat 30. The sliding friction between the inner slider 29 and the fixed seat 30 is much greater than the sliding friction between the movable block 10 and the fixed seat 11. The two ends of the connecting frame 5 are fixedly connected to the top of the two fixed seats 11.

[0050] During operation: When the patient begins strength training, they pull the tension rod 8 downwards. At this time, the connecting frame 5, with the help of the linkage between the fixed seat 11 and the plug rod 9, drives multiple counterweights 4 to rise. The inner slider 29 slides upwards inside the fixed seat 20. Through the shock-absorbing spring 31, when the tension rod 8 rises and resets, it can effectively buffer the multiple counterweights 4, avoiding the large impact force generated by the sudden fall of the counterweights 4, thus ensuring the safety and stability of the training process. Moreover, the sliding friction between the inner slider 29 and the fixed seat 20 is much greater than the sliding friction between the movable block 10 and the fixed seat 11. Therefore, when the pusher 12 pushes the movable block 10 upwards, the fixed seat 11 and the inner slider 29 will not move upwards with it, ensuring the stability and reliability of the entire training device during operation.

[0051] like Figure 5 As shown, multiple guardrails 41 are fixedly connected to the top of the placement platform 3, and the inner walls of the multiple guardrails 41 are tightly fitted to the outer edge of the counterweight 4.

[0052] During operation: The cleverly designed guardrail 41 ensures that the counterweight 4 moves orderly along the predetermined track or path when it is rising and falling.

[0053] like Figure 10 As shown, the adjustment assembly includes guide wheel 33 and guide wheel 34. The outer wall of guide wheel 33 is slidably connected to the outer wall of tension rope 6. A clamping wheel 40 is fixedly connected to the shaft of guide wheel 34. A straight telescopic rod 39 is fixedly connected to the bottom of clamping wheel 40. A vertical plate frame 32 is fixedly connected to the top of rehabilitation table 1. A receiving plate 38 is fixedly connected to one side of vertical plate frame 32. The straight telescopic rod 39 is fixedly connected above the receiving plate 38.

[0054] During operation: When it is necessary to adjust the longitudinal height position of the tension rod 8, the guide wheel 34 can be driven to move up or down by operating the straight telescopic rod 39. When the guide wheel 34 rises, the total length of the tension rope 6 at the location of the connecting frame 5 will increase accordingly. Since the total length of the tension rope 6 is relatively fixed, this reduces the total length at the location of the tension rod 8, thus increasing the height of the tension rod 8. Similarly, when the guide wheel 34 falls, the total length of the tension rope 6 at the location of the connecting frame 5 will decrease, increasing the total length at the location of the tension rod 8, thus decreasing the height of the tension rod 8.

[0055] like Figure 10 As shown, a hinge seat 36 is fixedly connected to one side of the vertical plate frame 32, and a hinge rod 35 is hinged to the inner wall of the hinge seat 36. One end of the hinge rod 35 is rotatably connected to the shaft of the guide wheel 33. An arc-shaped telescopic rod 37 is fixedly connected to the top of the vertical plate frame 32, and one end of the arc-shaped telescopic rod 37 is fixedly connected to the side wall of the hinge rod 35.

[0056] During operation: When it is necessary to adjust the lateral position of the tension rod 8, operate the arc-shaped telescopic rod 37. The arc-shaped telescopic rod 37 drives the hinge rod 35 to rotate around the axis of the hinge seat 36. The hinge rod 35 then drives the guide wheel 33 to rotate around the same axis, causing the guide wheel 33 to move along the arc-shaped trajectory, thereby changing the lateral position of the tension rod 8. In actual use, the patient first adjusts the lateral position of the tension rod 8, and then adjusts the longitudinal position to find the position that best suits the patient.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An arm rehabilitation device, comprising a rehabilitation table, characterized in that: A training chair is fixedly installed on the top of the rehabilitation table. A placement platform is set on one side of the training chair. The placement platform is fixedly installed on the top of the rehabilitation table. Several counterweights are placed on the placement platform. A connecting frame is set on top of the counterweights. A tension rope is fixedly connected to the top of the connecting frame. A triangular rod is fixedly connected to the end of the tension rope away from the connecting frame. A tension rod is fixedly connected to the bottom of the triangular rod. A counterweight assembly is set on one side of the training chair. The counterweight assembly is used to adjust different numbers of counterweights for tensile testing. An adjustment assembly is set on the top of the tension rope. The adjustment assembly is used to adjust the lateral position and longitudinal height of the tension rod. The counterweight assembly includes two plug-in rods and several counterweight blocks stacked on top of each other. Each counterweight block has a round hole at the center of both sides. The plug-in rods can be inserted into the inner wall of the round hole and are mutually compatible. Each plug-in rod has a fixed seat on one side. The two ends of the connecting frame are fixedly connected to the top of the two fixed seats. Each fixed seat has a movable block slidably connected to its inner wall. The inner wall of the movable block is slidably connected to the outer wall of the plug-in rod. Each movable block has a pusher attached to its bottom. A movable rod is fixedly connected to the bottom of the pusher. One side of the plug-in rod has a disengagement component for separating the plug-in rod from the round hole. One side of the movable rod has a lifting component for driving the pusher to rise and fall. The lifting assembly includes two connecting rods, both of which are slidably connected to the top of the rehabilitation table. One end of each connecting rod is fixedly connected to a trapezoidal platform, and an inclined slide is fixedly connected above the inclined surface of the trapezoidal platform. The inner wall of the inclined slide is slidably connected to the outer wall of the movable rod. The other end of each connecting rod is fixedly connected to a push-pull rod, and the top of each push-pull rod is fixedly connected to a handle cap. The two handle caps are located on both sides of the training seat. A locking component is provided on the outside of the push-pull rod, which is used to allow the handle caps to move forward and backward in a step-by-step manner. The positioning assembly includes two adjustable housings, which are fixedly connected to both sides of the training seat. The top and bottom surfaces of the adjustable housings are provided with sliding grooves. The push-pull rod is slidably connected to the sliding grooves. The outer wall of the push-pull rod is fixedly connected to a limit block. One side of the limit block is slidably connected to the side wall of the adjustable housing. Multiple limit springs are fixedly connected to the inner side of the adjustable housing. A limit seat is fixedly connected to one end of each of the multiple limit springs. One end of the limit seat is an isosceles trapezoid, and one side of the limit seat is designed as a triangular groove that matches the isosceles trapezoidal shape of one end of the limit block. The number of triangular grooves on one side of the limit seat is the same as the number of counterweights. Multiple stop plates are fixedly connected to the top of the adjusting housing. The number of stop plates is the same as the number of triangular grooves and their positions correspond to each other.

2. The arm rehabilitation device according to claim 1, characterized in that: The disengagement assembly includes a movable rod, the outer wall of which is slidably connected to the inner wall of the training seat. One end of the movable rod is fixedly connected to a compression plate. A triangular block is fixedly connected to the outside of the plug-in rod. The surfaces of the triangular block and the compression plate adjacent to each other are inclined surfaces. A return spring is fixedly connected to one side of the movable block. The end of the return spring away from the movable block is fixedly connected to one end of the plug-in rod.

3. The arm rehabilitation device according to claim 2, characterized in that: An inner slider is fixedly connected to one side of each of the two fixed seats. A second fixed seat is slidably connected to the outer wall of each inner slider. The second fixed seat is fixedly installed on the top of the rehabilitation table. A shock-absorbing spring is fixedly connected between the top of the inner slider and the top wall of the second fixed seat. The sliding friction between the inner slider and the second fixed seat is much greater than the sliding friction between the movable block and the first fixed seat.

4. The arm rehabilitation device according to claim 3, characterized in that: The top of the platform is fixedly connected with multiple guardrails, and the inner walls of the guardrails are tightly fitted to the outer edge of the counterweight.

5. The arm rehabilitation device according to claim 4, characterized in that: The adjustment assembly includes guide wheel one and guide wheel two. The outer walls of guide wheel one and guide wheel two are slidably connected to the outer wall of the tension rope. A clamping wheel is fixedly connected to the shaft of guide wheel two. A straight telescopic rod is fixedly connected to the bottom of the clamping wheel. A vertical plate frame is fixedly connected to the top of the rehabilitation table. A receiving plate is fixedly connected to one side of the vertical plate frame. The straight telescopic rod is fixedly connected above the receiving plate.

6. The arm rehabilitation device according to claim 5, characterized in that: A hinged seat is fixedly connected to one side of the vertical plate frame. A hinged rod is hinged to the inner wall of the hinged seat. One end of the hinged rod is rotatably connected to the shaft of the guide wheel. An arc-shaped telescopic rod is fixedly connected to the top of the vertical plate frame. One end of the arc-shaped telescopic rod is fixedly connected to the side wall of the hinged rod.

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