Upper limb rehabilitation training device

Abstract

The invention relates to the technical field of medical instruments, in particular to an upper limb rehabilitation trainer which comprises a training chair and a controller, a base is fixed to the top of an armrest on one side of the training chair, and a first sliding groove, a second sliding groove and a third sliding groove are sequentially formed in the base. A first rack, a second rack and a third rack are arranged in each sliding groove in a sliding fit mode, and one end of each third rack is detachably connected with an electric push rod. The third rack is meshed with a third gear, the third gear is coaxially fixed with a third rotating shaft, and the third rotating shaft penetrates through the supporting plate and is provided with a first shoulder assembly. A second rotating shaft is rotationally sleeved in the third rotating shaft, a second gear is fixed at one end of the second rotating shaft and meshed with the second rack, and a second shoulder component is arranged at the other end to realize shoulder forward extension and backward extension. A first gear is fixed at one end of the first rotating shaft and is meshed with the first rack, and an elbow joint assembly is arranged at the other end of the first rotating shaft and is used for bending and straightening an elbow joint. The upper limb rehabilitation training device is relatively simple in structure, small in occupied area and suitable for being used in the family environment.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an upper limb rehabilitation trainer. Background Art

[0002] Upper limb dysfunction is usually caused by neurological diseases such as stroke, brain trauma and spinal cord injury, as well as traumatic factors such as fractures and joint injuries. These diseases and injuries often lead to a decline in the patient's upper limb motor ability, seriously affecting the quality of life. Therefore, it is particularly important to develop an upper limb rehabilitation trainer that can simulate the movement patterns of the human upper limbs and help patients perform targeted training.

[0003] The technical principle of the upper limb rehabilitation trainer is mainly based on the principle of neuroplasticity, that is, the brain and nervous system are adaptable and plastic, and can restore or improve damaged functions through learning and training. The device simulates the movement patterns of the upper limbs of the human body in real time, combines computer virtual technology and rehabilitation medicine theory, and provides patients with a safe and effective rehabilitation training environment. Existing upper limb rehabilitation training equipment is usually complex in structure, difficult to operate, occupies a large area, and is difficult to use at home.

[0004] In summary, how to solve the problem that existing upper limb rehabilitation training equipment is usually complex in structure and difficult to use at home has become a difficult problem that needs to be solved urgently in this field. Therefore, it is necessary to propose an upper limb rehabilitation trainer. Summary of the invention

[0005] In order to solve the above problems, the present invention provides an upper limb rehabilitation trainer, which has a relatively simple and compact structure, is easy to install and disassemble, occupies a small area, and is suitable for use in a home environment.

[0006] In order to achieve the above-mentioned objectives, the technical solution of the present invention is as follows: an upper limb rehabilitation trainer, comprising a training chair and a controller; a base is detachably connected to one of the armrests of the training chair, and a first slide groove, a second slide groove and a third slide groove are sequentially opened on the top of the base in the direction close to the training chair; a first rack is slidably fitted in the first slide groove, a second rack is slidably fitted in the second slide groove, and a third rack is slidably fitted in the third slide groove; an electric push rod is detachably connected to the first rack, the second rack and the third rack at one end away from the base, and the controller is used to control the operation of the electric push rod.

[0007] The third rack is meshed with a third gear, and the third gear is coaxially fixedly connected to a third rotating shaft on the side wall close to the training chair; a support plate is fixedly connected to the top of the base, and the end of the third rotating shaft away from the third gear penetrates the support plate and rotates with the support plate; the end of the third rotating shaft away from the third gear is provided with a first shoulder component for abduction and adduction of the shoulder.

[0008] A second rotating shaft is rotatably sleeved in the third rotating shaft, one end of the second rotating shaft is coaxially fixedly connected with a second gear, and the second gear is meshed with the second rack; a second shoulder assembly for extending the shoulder forward and backward is provided at one end of the second rotating shaft away from the second gear.

[0009] The first rotating shaft is rotatably sleeved in the second rotating shaft, one end of the first rotating shaft is coaxially fixedly connected with the first gear, and the first gear is meshed with the first rack; an elbow joint component for bending and straightening the elbow joint is provided at one end of the first rotating shaft away from the first gear.

[0010] The technical principles of the above scheme are as follows:

[0011] When the patient performs upper limb rehabilitation training, the patient sits quietly on the training chair and places the arm in the upper limb rehabilitation trainer. The electric push rod drives the corresponding first rack, second rack and third rack to slide in the first slide groove, second slide groove and third slide groove respectively, and then drives the first gear, second gear and third gear respectively, and then drives the corresponding first shoulder assembly, second shoulder assembly and elbow joint assembly respectively to drive the patient to perform corresponding rehabilitation training of shoulder abduction and adduction, shoulder extension and backward extension, and elbow flexion and extension.

[0012] The above scheme has the following beneficial effects:

[0013] 1. The present invention realizes precise control of the patient's upper limbs through the transmission structure of the electric push rod, rack and gear, can simulate the natural movement law of the human upper limbs, and provide personalized rehabilitation training for patients. This design not only improves the pertinence and effectiveness of the training, but also makes the training process more comfortable and safe.

[0014] 2. The present invention has a relatively simple and compact structure, is easy to install and disassemble, occupies a small area, and is suitable for use in a home environment. This solves the problem that the existing upper limb rehabilitation training equipment has a complex structure and is difficult to use at home, allowing patients to carry out continuous rehabilitation training at home, improving the convenience and accessibility of rehabilitation.

[0015] 3. The present invention can precisely control the operation of the electric push rod through the controller, and can adjust the training intensity and mode according to the patient's rehabilitation progress and needs. This intelligent design not only improves the flexibility of training, but also helps patients better adapt to and restore upper limb function, thereby improving the quality of life. At the same time, the device can also disassemble the electric push rod and use the arm strength to push the first rack, the second rack and the third rack to perform strength training for upper limb rehabilitation.

[0016] Furthermore, the first shoulder assembly includes a C-shaped bracket, the outer side wall of the C-shaped bracket and the end of the third shaft away from the third gear are coaxially fixedly connected; the inner bottom wall of the C-shaped bracket is rotatably matched with the first bevel gear, and an L-shaped rod is fixedly connected to the side wall of the first bevel gear, and the L-shaped rod is rotatably sleeved with a rotating rod at one end away from the first bevel gear, one end of the rotating rod is coaxially fixedly connected with the second bevel gear, and a clamping assembly for clamping the arm is provided at the end of the rotating rod away from the second bevel gear.

[0017] The inner top wall of the C-shaped bracket is rotatably matched with a third bevel gear, and the third bevel gear is meshed with the second bevel gear.

[0018] Beneficial effects: Through the transmission structure of the C-shaped bracket and the bevel gear, precise control of the abduction and adduction movement of the shoulder is achieved. The meshing of the first bevel gear and the second bevel gear, as well as the meshing of the third bevel gear and the second bevel gear, can ensure the stable movement of the arm in the clamping assembly, while providing sufficient range of motion and flexibility to meet the rehabilitation needs of different patients.

[0019] Furthermore, the clamping assembly includes a U-shaped arm support, and the side wall of the U-shaped arm support is fixedly connected to an end of the rotating rod away from the second bevel gear.

[0020] Beneficial effects: The U-shaped arm rest as a clamping component provides a stable and comfortable support platform for the patient's arm. The shape design of the U-shaped arm rest is ergonomic and can fit the natural curve of the arm, reducing discomfort during training.

[0021] Furthermore, the second shoulder assembly includes a fourth bevel gear, which is coaxially fixedly connected to an end of the second rotating shaft away from the second gear; the fourth bevel gear is meshed with the first bevel gear.

[0022] Beneficial effect: Since the fourth bevel gear is coaxially fixedly connected to the second rotating shaft, when the second rotating shaft rotates, it can drive the fourth bevel gear to rotate synchronously, and then drive the first bevel gear to rotate in the opposite direction through the meshing relationship, thereby driving the patient's arm in the U-shaped arm rest and then driving the shoulder to extend and extend forward and backward.

[0023] Furthermore, the elbow joint assembly includes a fifth bevel gear, which is coaxially fixedly connected to an end of the first rotating shaft away from the first gear; the fifth bevel gear is meshed with the third bevel gear.

[0024] Beneficial effect: Since the fifth bevel gear is coaxially fixedly connected to the first rotating shaft, when the first rotating shaft rotates, the fifth bevel gear can be driven to rotate synchronously, and then the third bevel gear is driven through the meshing relationship to drive the arm in the U-shaped armrest to bend and straighten. This design allows the bending and straightening movement of the elbow joint to more accurately simulate the natural movement law of the human body, improving the pertinence and effectiveness of training.

[0025] Furthermore, a first spring is fixedly connected to the inner side wall of the first slide groove, and the other end of the first spring is fixedly connected to the side wall of the first rack; a second spring is fixedly connected to the inner side wall of the second slide groove, and the other end of the second spring is fixedly connected to the side wall of the second rack; a third spring is fixedly connected to the inner side wall of the third slide groove, and the other end of the third spring is fixedly connected to the side wall of the third rack; the stiffness of the first spring is smaller than that of the second spring, and the stiffness of the second spring is smaller than that of the third spring.

[0026] Beneficial effects: This design achieves buffering and stabilizing effects on the rack movement by setting springs of different stiffness in different slides. When the electric push rod drives the rack to slide in the slide, the spring can absorb part of the impact force, reduce vibration and noise during movement, and improve the stability and comfort of movement. At the same time, according to actual needs, the electric push rod can be removed, and the first rack, the second rack and one end of the third rack can be pushed by hand to perform strength training. At the same time, springs of different stiffness provide different degrees of resistance for strength training, thereby adjusting the intensity and difficulty of training.

[0027] Furthermore, a rubber anti-slip layer is fixedly connected to the inner wall of the U-shaped arm support.

[0028] Beneficial effects: The rubber anti-slip layer has excellent friction coefficient and wear resistance, which can effectively prevent the arms from slipping or sliding during training, thereby ensuring training effect and safety.

[0029] Furthermore, an emergency stop button is fixedly connected to the top of the armrest of the training chair, and the controller is used to receive an emergency stop signal sent by the emergency stop button, and control the electric push rod to stop running based on the emergency stop signal.

[0030] Beneficial effect: When the patient encounters an emergency or discomfort during training, he can immediately press the emergency stop button, the controller will receive the emergency stop signal and control all electric push rods to stop running, thereby ensuring the safety of the patient.

[0031] Furthermore, a plurality of elastic straps are fixedly connected to the side walls of the U-shaped arm support; and a support handle is detachably connected to the side walls of the U-shaped arm support.

[0032] Beneficial Effects: The elastic strap can be adjusted and fixed according to the thickness of the arm, ensuring that the arm will not slip or slide during training.

[0033] Furthermore, a sponge pad is fixedly connected to the inner side of the backrest of the training chair.

[0034] Beneficial effects: The sponge pad has excellent elasticity and softness, can fit the patient's back curve, and reduce the discomfort caused by long-term training.

[0035] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is an axonometric diagram of an embodiment of the upper limb rehabilitation training device of the present invention.

[0037] Figure 2 This is a left-side axonometric view of the base of the upper limb rehabilitation training device embodiment of the present invention.

[0038] Figure 3 It is a right axonometric view of the base of the upper limb rehabilitation training device embodiment of the present invention.

[0039] Figure 4 It is a front view of the base of the upper limb rehabilitation training device embodiment of the present invention.

[0040] Figure 5 It is a front cross-sectional view of the base of the upper limb rehabilitation training device embodiment of the present invention.

[0041] Figure 6 This is an axonometric diagram of another method of fixing the base of an upper limb rehabilitation training device embodiment of the present invention.

[0042] The figure marks in the drawings of the specification include: 1, training chair; 2, base; 3, first slide groove; 4, second slide groove; 5, third slide groove; 6, first rack; 7, second rack; 8, third rack; 9, electric push rod; 10, third gear; 11, third rotating shaft; 12, support plate; 13, second rotating shaft; 14, second gear; 15, first rotating shaft; 16, first gear; 17, C-shaped bracket; 18, first bevel gear; 19, L-shaped rod; 20, rotating rod; 21, second bevel gear; 22, third bevel gear; 23, U-shaped arm support; 24, fourth bevel gear; 25, fifth bevel gear; 26, first spring; 27, second spring; 28, third spring; 29, emergency stop button; 30, elastic strap; 31, sponge pad; 32, fixed seat; 33, telescopic rod. DETAILED DESCRIPTION

[0043] The following is further described in detail through specific implementation methods:

[0044] Embodiment 1:

[0045] As attached Figure 1-Figure 5As shown: an upper limb rehabilitation trainer, comprising a training chair 1 and a controller; a base 2 is detachably connected to one of the armrests of the training chair 1, and a first slide groove 3, a second slide groove 4 and a third slide groove 5 are sequentially opened on the top of the base 2 in the direction close to the training chair 1; a first rack 6 is slidably fitted in the first slide groove 3, a second rack 7 is slidably fitted in the second slide groove 4, and a third rack 8 is slidably fitted in the third slide groove 5; one end of the first rack 6, the second rack 7 and the third rack 8 can be detachably connected to an electric push rod 9, and the electric push rod 9 is fixedly connected to the top of the base 2 by screws, and the controller is used to control the operation of the electric push rod 9.

[0046] The third rack 8 is meshed with a third gear 10, and a third rotating shaft 11 is coaxially integrally formed on the side wall of the third gear 10 close to the training chair 1; a support plate 12 is fixedly welded to the top of the base 2, and the end of the third rotating shaft 11 away from the third gear 10 penetrates the support plate 12 and rotates with the support plate 12; the end of the third rotating shaft 11 away from the third gear 10 is provided with a first shoulder component for abduction and adduction of the shoulder.

[0047] The first shoulder component includes a C-shaped bracket 17, the outer side wall of the C-shaped bracket 17 and the end of the third rotating shaft 11 away from the third gear 10 are coaxially integrated; the inner bottom wall of the C-shaped bracket 17 is rotatably matched with the first bevel gear 18, and an L-shaped rod 19 is integrally formed on the side wall of the first bevel gear 18, and a rotating rod 20 is rotatably sleeved on the end of the L-shaped rod 19 away from the first bevel gear 18, and a second bevel gear 21 is coaxially and integrally formed at one end of the rotating rod 20, and a clamping component for clamping the arm is provided at the end of the rotating rod 20 away from the second bevel gear 21.

[0048] The clamping assembly includes a U-shaped arm support 23 , and the side wall of the U-shaped arm support 23 is fixedly connected to the end of the rotating rod 20 away from the second bevel gear 21 by screws.

[0049] A second rotating shaft 13 is rotatably sleeved inside the third rotating shaft 11, and one end of the second rotating shaft 13 is coaxially fixedly connected to a second gear 14 by a screw, and the second gear 14 is meshed with the second rack 7; a second shoulder assembly for extending the shoulder forward and backward is provided at one end of the second rotating shaft 13 away from the second gear 14.

[0050] The second shoulder assembly includes a fourth bevel gear 24 , which is coaxially and integrally formed at an end of the second rotating shaft 13 away from the second gear 14 ; the fourth bevel gear 24 is meshed with the first bevel gear 18 .

[0051] The first rotating shaft 15 is rotatably sleeved in the second rotating shaft 13, and one end of the first rotating shaft 15 is coaxially fixedly connected to the first gear 16 by a screw, and the first gear 16 is meshed with the first rack 6; the first rotating shaft 15 is provided with an elbow joint assembly for bending and straightening the elbow joint at one end away from the first gear 16.

[0052] The elbow joint assembly includes a fifth bevel gear 25 , which is coaxially and integrally formed at an end of the first rotating shaft 15 away from the first gear 16 ; the fifth bevel gear 25 is meshed with the third bevel gear 22 .

[0053] The inner wall of the first slide groove 3 is fixedly connected with a first spring 26 by screws, and the other end of the first spring 26 is fixedly connected to the side wall of the first rack 6 by screws; the inner wall of the second slide groove 4 is fixedly connected with a second spring 27 by screws, and the other end of the second spring 27 is fixedly connected to the side wall of the second rack 7 by screws; the inner wall of the third slide groove 5 is fixedly connected with a third spring 28 by screws, and the other end of the third spring 28 is fixedly connected to the side wall of the third rack 8 by screws; the stiffness of the first spring 26 is smaller than that of the second spring 27, and the stiffness of the second spring 27 is smaller than that of the third spring 28.

[0054] A plurality of elastic bands 30 are fixedly bonded to the outer side wall of the U-shaped arm support 23 ; a support handle 32 is also detachably connected to the side wall of the U-shaped arm support 23 through threads.

[0055] A rubber anti-skid layer is fixedly bonded to the inner side wall of the U-shaped arm support 23 .

[0056] An emergency stop button 29 is fixedly connected to the top of the other armrest of the training chair 1 by screws. The controller is used to receive an emergency stop signal sent by the emergency stop button 29 and control the electric push rod 9 to stop running based on the emergency stop signal.

[0057] The specific implementation process is as follows:

[0058] First, the patient sits quietly on the training chair 1 and extends his forearm into the U-shaped arm rest 23 to ensure that the arm is comfortably and firmly clamped by the U-shaped arm rest 23. At this time, the elastic strap 30 will restrain the patient's forearm to prevent the patient's forearm from slipping out of the U-shaped arm rest 23 during training. During training, the patient can hold the handle 32 to increase the stability of the patient's hand during training.

[0059] Before the training begins, the patient can set the training mode and intensity through the controller. The controller will control the frequency of the extension and retraction of the output shaft of the electric push rod 9 according to the set parameters. When the training intensity is slow, the controller controls the extension and retraction frequency of the output shaft of the electric push rod 9 to decrease; when the training intensity is strong, the controller controls the extension and retraction frequency of the output shaft of the electric push rod 9 to increase.

[0060] When the output shaft of the electric push rod 9 is extended or retracted, the electric push rod 9 will correspondingly drive the first rack 6, the second rack 7 and the third rack 8 to slide in the first slide groove 3, the second slide groove 4 and the third slide groove 5 respectively.

[0061] by Figure 2 , Figure 4 and Figure 5For example, when the output shaft of the electric push rod 9 connected to the first rack 6 is extended, the first rack 6 slides in the first slide groove 3, which can drive the first gear 16 meshing therewith to rotate clockwise, thereby driving the first rotating shaft 15 and then driving the fifth bevel gear 25 to rotate clockwise. Since the fifth bevel gear 25 is meshed with the third bevel gear 22, the third bevel gear 22 rotates counterclockwise at this time. Since the third bevel gear 22 is meshed with the second bevel gear 21, the second bevel gear 21 rotates clockwise at this time, and the second bevel gear 21 drives the U-shaped arm support 23 at the right end of the rotating rod 20 to rotate clockwise, so that the patient's forearm stuck in the U-shaped arm support 23 extends forward and thus drives the elbow joint to straighten; conversely, when the output shaft of the electric push rod 9 connected to the first rack 6 is retracted, the U-shaped arm support 23 rotates counterclockwise at this time, so that the patient's forearm stuck in the U-shaped arm support 23 drives the elbow joint to bend; the extension and contraction of the electric push rod 9 is controlled by the controller, thereby realizing the rehabilitation training of the patient's elbow flexion and extension.

[0062] by Figure 2 , Figure 4 and Figure 5 For example, when the patient needs to perform shoulder extension and back extension exercises, the medical staff removes the support handle 32 and inserts the patient's upper arm into the U-shaped arm support 23. At this time, the controller controls the output shaft of the electric push rod 9 connected to the second rack 7 to extend, and the second rack 7 slides in the second slide groove 4, driving the second gear 14 to rotate clockwise, and then driving the second rotating shaft 13 and the fourth bevel gear 24 to rotate clockwise. Due to the engagement of the fourth bevel gear 24 with the first bevel gear 18, the first bevel gear 18 rotates clockwise at this time, and then drives the L-shaped rod 19 integrally formed with its side wall, and then drives the U-shaped arm support 23 to drive the patient's upper arm to extend horizontally toward the front of the patient; when the output shaft of the electric push rod 9 connected to the second rack 7 contracts, it can drive the U-shaped arm support 23 to drive the patient's upper arm to retract toward the back of the patient; thereby realizing the rehabilitation training of the patient's shoulder extension and back extension.

[0063] by Figure 2 , Figure 4 and Figure 5For example, when the output shaft of the electric push rod 10 connected to the third rack 8 is extended, the third rack 8 slides in the third slide groove 5, driving the third gear 10 to rotate clockwise, thereby driving the third rotating shaft 11 and the C-shaped bracket 17 to rotate clockwise; the clockwise rotation of the C-shaped bracket 17 drives the first bevel gear 18 to revolve counterclockwise around the fourth bevel gear 24. Since the first bevel gear 18 and the fourth bevel gear 24 are meshed, at this time, the C-shaped bracket 17 drives the first bevel gear 18 to revolve counterclockwise around the fourth bevel gear 24. , the first bevel gear 18 can also rotate counterclockwise; when the first bevel gear 18 revolves counterclockwise around the fourth bevel gear 24 and the first bevel gear 18 rotates counterclockwise, it can drive the L-shaped rod 19 and then drive the U-shaped arm support 23 and then drive the patient's upper arm to retract toward the rear of the patient; when the output shaft of the electric push rod 10 connected to the third rack 8 contracts, it can drive the U-shaped arm support 23 and then drive the patient's upper arm to stretch obliquely toward the front of the patient, thereby realizing rehabilitation training of shoulder abduction and adduction.

[0064] The above are merely examples of several basic rehabilitation training movements that can be achieved by the present invention. In fact, in the upper limb rehabilitation trainer of the present invention, the controller can also control all the electric push rods 9 to drive the first rack 6, the second rack 7 and the third rack 8 to extend and retract different distances relative to each other, thereby driving the linkage between the bevel gears, thereby driving the U-shaped arm support 23 to meet the needs of fixed-point and multi-directional rehabilitation movements at any position in space, and at the same time, the rehabilitation movements can be formulated according to the patient's condition, making the present invention more practical and popular.

[0065] During training, the first spring 26, the second spring 27 and the third spring 28 play a buffering and stabilizing role, reducing vibration and noise during exercise and improving the stability and comfort of exercise. In addition, the rubber anti-skid layer will ensure that the arm will not slip or slide during training, thereby ensuring the training effect and safety.

[0066] When the patient encounters an emergency or discomfort during training, the emergency stop button 29 can be pressed immediately. The controller will receive the emergency stop signal and immediately control all electric push rods 9 to stop running, thereby ensuring the safety of the patient.

[0067] In addition, the patient can also remove the electric push rod 9 as needed, and manually push the first rack 6, the second rack 7 and one end of the third rack 8 to perform strength training. Springs of different stiffness will provide different degrees of resistance for strength training, thereby adjusting the intensity and difficulty of training.

[0068] The upper limb rehabilitation trainer can also achieve the effect of two-person linkage training.

[0069] In the two-person linkage training mode, one of the patients manually pushes one end of the first rack 6, the second rack 7 and the third rack 8. At this time, the pusher's action will be converted into the rotation of the shoulder assembly and the elbow joint assembly, thereby driving the arm of the other patient to perform corresponding movements.

[0070] The promoter can control the intensity and rhythm of the training according to his own strength and speed, while the trainee can feel the movement of the shoulder and elbow in this passive movement, thereby achieving the purpose of rehabilitation training.

[0071] During the training process, both parties can communicate with each other and adjust the rhythm and intensity of the training to ensure the safety and effectiveness of the training.

[0072] The upper limb rehabilitation trainer of the present invention only needs to be installed on a conventional chair to perform upper limb rehabilitation training. At the same time, it occupies a small area and is easy to operate. The electric push rod 9 can be removed for manual training. It is suitable for use in a home environment, solving the problem that the existing upper limb rehabilitation training equipment has a complex structure and is difficult to use at home, so that patients can perform continuous rehabilitation training at home, improving the convenience and popularity of rehabilitation.

[0073] Embodiment 2:

[0074] As attached Figure 1 As shown, the difference from the embodiment 1 is that a sponge pad 31 is fixedly bonded to the inner side of the backrest of the training chair 1 .

[0075] The specific implementation process is as follows: the sponge pad 31 has excellent elasticity and softness, can fit the patient's back curve, and reduce the discomfort caused by long-term training.

[0076] Embodiment 3:

[0077] As attached Figure 6 As shown, the difference from Example 2 is that this embodiment provides another way to fix the base 2, including a fixing base 32, the top of which is fixedly connected to an adjustable telescopic rod 33 by screws, and the top of the adjustable telescopic rod 33 and the bottom of the base 2 are detachably connected.

[0078] The specific implementation process is as follows: the base 2 can also be removed from the training chair 1 and installed on the top of the adjustable telescopic rod 33. The height of the base 2 can be adjusted through the adjustable telescopic rod 33 to adapt to the upper body height of different patients. At the same time, during training, the upper limb rehabilitation trainer can be placed on the left armrest or the right armrest of the training chair 1, and the U-shaped arm support 23 is facing the patient, so as to realize the function of switching training between the patient's left hand and right hand.

[0079] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An upper limb rehabilitation training device, comprising a training chair (1), characterized in that: The training chair (1) also includes a controller; a base (2) is detachably connected to one of the armrests of the training chair (1); a first slide groove (3), a second slide groove (4) and a third slide groove (5) are sequentially formed on the top of the base (2) in a direction close to the training chair (1); A first rack (6) is slidably fitted in the first slide groove (3); a second rack (7) is slidably fitted in the second slide groove (4); a third rack (8) is slidably fitted in the third slide groove (5); one end of the first rack (6), the second rack (7) and the third rack (8) are all detachably connected to an electric push rod (9), the electric push rod (9) is fixedly connected to the top of the base (2), and the controller is used to control the operation of the electric push rod (9); The third rack (8) is meshed with a third gear (10), and the third gear (10) is coaxially fixedly connected to a third rotating shaft (11) on a side wall close to the training chair (1); a support plate (12) is fixedly connected to the top of the base (2), and the end of the third rotating shaft (11) away from the third gear (10) passes through the support plate (12) and is rotatably matched with the support plate (12); the end of the third rotating shaft (11) away from the third gear (10) is provided with a first shoulder assembly for abduction and adduction of the shoulder; A second rotating shaft (13) is rotatably sleeved inside the third rotating shaft (11), one end of the second rotating shaft (13) is coaxially fixedly connected with a second gear (14), and the second gear (14) is meshed with a second rack (7); a second shoulder assembly for extending the shoulder forward and backward is provided at one end of the second rotating shaft (13) away from the second gear (14); A first rotating shaft (15) is rotatably sleeved inside the second rotating shaft (13); one end of the first rotating shaft (15) is coaxially fixedly connected with a first gear (16); the first gear (16) is meshed with the first rack (6); and an elbow joint assembly for bending and straightening the elbow joint is provided at one end of the first rotating shaft (15) away from the first gear (16).

2. The upper limb rehabilitation training device according to claim 1, characterized in that: The first shoulder assembly comprises a C-shaped bracket (17), the outer wall of the C-shaped bracket (17) and the end of the third rotating shaft (11) away from the third gear (10) are coaxially fixedly connected; the inner bottom wall of the C-shaped bracket (17) is rotatably matched with a first bevel gear (18), the side wall of the first bevel gear (18) is fixedly connected with an L-shaped rod (19), the end of the L-shaped rod (19) away from the first bevel gear (18) is rotatably sleeved with a rotating rod (20), one end of the rotating rod (20) is coaxially fixedly connected with a second bevel gear (21), and the end of the rotating rod (20) away from the second bevel gear (21) is provided with a clamping assembly for clamping the arm; The inner top wall of the C-shaped bracket (17) is rotatably matched with a third bevel gear (22), and the third bevel gear (22) is meshed with the second bevel gear (21).

3. The upper limb rehabilitation training device according to claim 2, characterized in that: The clamping assembly comprises a U-shaped arm support (23), and the side wall of the U-shaped arm support (23) is fixedly connected to an end of the rotating rod (20) away from the second bevel gear (21).

4. The upper limb rehabilitation training device according to claim 3, characterized in that: The second shoulder component comprises a fourth bevel gear (24), which is coaxially fixedly connected to an end of the second rotating shaft (13) away from the second gear (14); the fourth bevel gear (24) is meshed with the first bevel gear (18).

5. The upper limb rehabilitation training device according to claim 4, characterized in that: The elbow joint assembly comprises a fifth bevel gear (25), which is coaxially fixedly connected to an end of the first rotating shaft (15) away from the first gear (16); the fifth bevel gear (25) is meshed with the third bevel gear (22).

6. The upper limb rehabilitation training device according to claim 5, characterized in that: A first spring (26) is fixedly connected to the inner wall of the first slide groove (3), and the other end of the first spring (26) is fixedly connected to the side wall of the first rack (6); a second spring (27) is fixedly connected to the inner wall of the second slide groove (4), and the other end of the second spring (27) is fixedly connected to the side wall of the second rack (7); a third spring (28) is fixedly connected to the inner wall of the third slide groove (5), and the other end of the third spring (28) is fixedly connected to the side wall of the third rack (8); the stiffness of the first spring (26) is smaller than the stiffness of the second spring (27), and the stiffness of the second spring (27) is smaller than the stiffness of the third spring (28).

7. The upper limb rehabilitation training device according to claim 6, characterized in that: The inner side wall of the U-shaped arm support (23) is fixedly connected with a rubber anti-skid layer.

8. The upper limb rehabilitation training device according to claim 7, characterized in that: An emergency stop button (29) is fixedly connected to the top of another armrest of the training chair (1), and the controller is used to receive an emergency stop signal sent by the emergency stop button (29) and control the electric push rod (9) to stop running based on the emergency stop signal.

9. The upper limb rehabilitation training device according to claim 8, characterized in that: A plurality of elastic straps (30) are fixedly connected to the side wall of the U-shaped arm support (23); and a support handle (32) is detachably connected to the side wall of the U-shaped arm support (23).

10. The upper limb rehabilitation training device according to claim 9, characterized in that: A sponge pad (31) is fixedly connected to the inner side of the backrest of the training chair (1).

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