Lower extremity nerve rehabilitation training device

Abstract

This invention relates to the field of rehabilitation training and discloses a lower limb nerve rehabilitation training device, including a base, a seat portion protruding upward from the rear side of the base, a cushion on the seat portion, a foot pedal unit and a first hand-cranked drive unit that is pulsatingly connected to the foot pedal unit respectively disposed on the base, the first hand-cranked drive unit having a first rocker arm, and a second hand-cranked drive unit that is pulsatingly connected to the foot pedal unit disposed on the seat portion, the second hand-cranked drive unit having second rocker arms on both sides. The foot pedal unit allows the patient to perform bicycle training, thereby aiding in leg nerve rehabilitation, while the first and second hand-cranked drive units drive the foot pedal unit to rotate by the patient extending their arm forward to crank the first rocker arm or by the patient extending their arm downward to crank the second rocker arm, allowing the patient to improve arm fatigue by changing arm posture and body position, and helping the patient recover arm strength during training through single-handed cranking.

Description

Technical Field

[0001] This invention relates to the field of rehabilitation training technology, and in particular to a lower limb nerve rehabilitation training device. Background Technology

[0002] The main nerves in the lower limbs are the sciatic nerve, tibial nerve, and common peroneal nerve. Sciatic nerve injury is most common in posterior hip dislocations, manifesting as paralysis of the knee flexor muscles, calf, and foot muscles, and loss of sensation in the posterior thigh, lateral calf, and foot. Tibial nerve injury occurs in supracondylar femoral fractures and knee dislocations, resulting in paralysis of the gastrocnemius, soleus, flexor digitorum, and plantar muscles, and loss of sensation in the foot. Common peroneal nerve injury occurs in fractures of the fibular head or neck, leading to paralysis of the calf extensor muscles, peroneus longus and brevis muscles, and foot drop. When patients experience lower limb nerve injuries, the treatment principle is usually to improve blood circulation, enhance metabolism in the upper tissues, improve the excitability of nerve cells and tissues, and promote functional recovery of the affected limb.

[0003] Leg-operated bicycles are a common device for lower limb nerve rehabilitation training. During training, patients can delay lower limb muscle atrophy, improve coronary blood flow, promote lower limb blood circulation, strengthen motor nerve conduction, and promote the recovery of motor nerve function through knee flexion and extension. However, current lower limb nerve rehabilitation training often involves a hand crank on the device, which is located in front of the seat. When patients use the crank for assistance due to limited voluntary lower limb movement, their arms need to be continuously extended forward. Lower limb training is a lengthy process, often requiring 30 to 60 minutes of continuous training. During crank training, the extended arm quickly becomes weak and fatigued due to poor blood circulation, making it impossible for patients to continuously crank the crank for optimal results. Therefore, existing lower limb training devices cause inconvenience for patients. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a lower limb nerve rehabilitation training device to solve the problem of inconvenience caused by prolonged arm extension during training when using a joystick for assistance.

[0005] To solve the above-mentioned technical problems, the present invention provides a lower limb nerve rehabilitation training device, specifically including a base. A seat portion is formed by an upward protrusion on the rear side of the base. A seat cushion is provided on the top surface of the seat portion. A foot pedal unit and a first hand-cranked drive unit that are transformed with the foot pedal unit are respectively provided on the base and located on the front side of the seat portion. The top of the first hand-cranked drive unit has a first rocker arm located above the foot pedal unit and the seat cushion, allowing the patient to manually operate the foot pedal unit, thereby moving the patient's legs after placing them on the foot pedal unit. A second hand-cranked drive unit that is transformed with the foot pedal unit is provided on the seat portion. The second hand-cranked drive unit has a rocker arm located on the left and right sides of the seat cushion. The second rocker arm, when either the first or second rocker arm is rocked, activates the foot pedal unit to move the patient's lower limbs. The first rocker arm is rocked by the patient extending their arm forward and then rocking it, while the second rocker arm is rocked by the patient letting their arm hang naturally. The two methods can be used alternately, allowing the patient to switch between them as needed. Furthermore, the second hand-cranked drive unit and the second rocker arm allow the patient's arm to hang down and restore blood flow when the first rocker arm causes weakness or fatigue. The arm rocking with the second rocker arm promotes blood circulation and accelerates the recovery of arm strength, thus extending the patient's exercise time. In addition to changing posture to improve arm disengagement, the patient can also switch hands to complete training with one hand, increasing the device's versatility and providing convenience for the patient.

[0006] The first hand-cranked drive unit includes a first transmission group that is respectively connected to the first rocker arm and the foot pedal unit. The second hand-cranked drive unit includes a second transmission group that is respectively connected to the second rocker arm and the foot pedal unit. The second hand-cranked drive unit also includes a linkage part that is rotatably mounted on the seat and has a first state and a second state. The second rocker arm is connected to the linkage part and can switch the linkage part between the first state and the second state. When the linkage part is in the first state, the linkage part is connected to the second transmission group. When the second rocker arm is cranked, the second rocker arm can drive the linkage part to drive the second transmission group to run, thereby driving the foot pedal unit to run. When the linkage part is in the second state, the linkage part and the second transmission group are disconnected. At this time, the second rocker arm will not affect the second transmission part. At the same time, when the patient uses the first rocker arm, it is relatively easier to use the first rocker arm.

[0007] The first transmission assembly includes a bracket located within the activity space and connected to the base at its top, and a first gear assembly mounted on the bracket. The top of the bracket extends upward and bends toward the side of the seat cushion. A rotating shaft is rotatably mounted on the top of the bracket, with its two ends extending toward the left and right sides of the bracket, respectively. The first rocker arm is mounted on the rotating shaft so that the patient can extend their arm forward and rock the first rocker arm. The first gear assembly is connected to the rotating shaft and the foot pedal unit, respectively, so that when the patient rocks the first rocker arm, it drives the first gear assembly and the foot pedal unit to operate. The foot pedal unit then drives the patient's knee bending and extending foot pedal movement.

[0008] The second transmission assembly includes a second gear set disposed within the seat portion and a first rotating rod rotatably disposed within the seat portion and parallel to the rotating shaft. The second gear set is respectively connected to the foot pedal unit and the first rotating rod so that the first rotating rod can rotate synchronously with the second gear set. The linkage part cooperates with the end of the first rotating rod, thereby achieving the purpose of transmission cooperation with the second gear set by switching between the first state and the second state to cooperate with the first rotating rod.

[0009] The seat portion has two symmetrically formed mounting cavities. The linkage is configured as two parts and is installed in the two mounting cavities respectively. The two ends of the first rotating rod extend into the two mounting cavities respectively, and the two ends of the first rotating rod are connected to the two linkages respectively, so that the two linkages can cooperate with the first rotating rod simultaneously or separately, thereby enabling the patient to operate with one hand or both hands to shake the second rocker.

[0010] Both sides of the seat have connecting holes on their outer walls, each connecting to a mounting cavity. Each linkage includes a sleeve fixedly mounted within the mounting cavity, a slide rod slidably mounted on the sleeve and coaxially arranged with the first rotating rod, a first spring connected at one end to the slide rod and the other end to the sleeve, a slider mounted on the end of the first slide rod away from the first rotating rod, a cam rotatably mounted in the connecting hole via a sliding structure, and conversion parts formed on the first rotating rod and the end of the first slide rod near the first rotating rod, respectively. The slide rod is rotatable relative to the sleeve. A connecting rod is hinged to the second rocker arm, fixedly connected to the cam and coaxially arranged. The side of the cam away from the connecting rod protrudes towards the slide rod, forming a protruding end. A sliding engagement part is formed on the cam at a position corresponding to the slider, extending along the outer wall of the cam from the protruding end to the side near the connecting rod, engaging with the slider. The sliding groove is designed so that the first spring extends toward the cam side and keeps the slider always within the sliding groove. When the connecting rod is coaxial with the slide rod through the sliding structure, the cam's protruding end faces the slide rod so that the slider slides to the protruding end. The conversion part connects the first rotating rod and the slide rod to form the first state. At this time, shaking the rocker arm can drive the connecting rod, cam, and slide rod to rotate and make the second gear set run. When the connecting rod is perpendicular to the slide rod through the sliding structure, the cam's side near the connecting rod faces the slide rod so that the slider slides to the side of the cam near the connecting rod. The conversion part disconnects the first rotating rod and the slide rod to form the second state. At this time, shaking the rocker arm will not affect the second gear set. At the same time, the connecting rod is parallel to the outer wall of the seat after being perpendicular to the slide rod, so as to reduce the obstruction between the connecting rod and the rocker arm.

[0011] The sliding structure includes an annular slide rail recessed around the circumference of the connecting hole and a spherical slide foot rotatably mounted on the cam and perpendicular to the slide rod. Both ends of the spherical slide foot extend movably out of the cam, and each end has a spherical sliding head. Both sliding heads are slidably disposed within the annular slide rail, allowing the cam to rotate about the central axis of the slide rod. A second rocker arm drives the cam to rotate via a connecting rod, thereby causing the slide rod, which is slidably engaged with it, to rotate. Simultaneously, the cam can rotate about the spherical slide foot, ensuring that the connecting rod is coaxial with the slide rod and perpendicular to the slide rod. The transition between the two states of the sliding rod completes the change in the cooperation relationship between the conversion part and the first rotating rod. A storage groove adapted to the connecting rod is provided on the outer wall of the seat part, and an avoidance groove is provided on the connecting rod at the position corresponding to the annular slide rail. When the linkage part is in the second state, the connecting rod is located in the storage groove so that the connecting rod can be stored when not in use, thereby avoiding the patient or other people from rubbing against the connecting rod and causing adverse effects. The connecting rod is mounted on the annular slide rail through the avoidance groove so that when the connecting rod is stored in the storage groove, the connecting rod and the annular slide rail do not affect each other.

[0012] The conversion part includes a limiting cylinder fixedly disposed on the end of the first rotating rod and a meshing tooth formed on the end of the slide rod facing the first rotating rod. A locking groove is formed on the end of the limiting cylinder facing the slide rod along the axial direction of the limiting cylinder. A meshing groove adapted to the meshing tooth is formed in the locking groove. When the linkage part is in the first state, the slide rod passes into the locking groove and the meshing tooth engages with the meshing groove, so that the slide rod can drive the first rotating rod to rotate after rotation to achieve transmission engagement.

[0013] An active space is formed between the top surface of the base and the front side of the seat to facilitate the movement of the patient's legs. The foot pedal unit includes a support base fixedly connected to the base and located in the active space, a rotating disk rotatably mounted on the support base, and two foot pedals respectively connected to the two edges of the rotating disk and capable of rotation. The two foot pedals are arranged in opposite directions along the radial direction of the rotating disk. When the patient's feet are placed on the two foot pedals, the two feet face opposite directions relative to the center of the rotating disk. When the rotating disk rotates, the patient's two feet move alternately around the outside of the rotating disk. The rotating disk is connected to the linkage part for transmission, so that the rotating disk can be driven to rotate by the first rocker and the second rocker.

[0014] The foot pedal unit also includes two foldable and retractable support frames for supporting the patient's legs, so that the support frames can not only support the patient's legs, but also adjust the length to suit different patients. One end of each of the two support frames is hinged to the top of the seat and the other end is hinged to the two foot pedals. When the turntable is rotated, the support frames rotate and bend and swing, thereby supporting the patient's legs to move.

[0015] The lower limb nerve rehabilitation training device of the present invention has at least the following beneficial effects: the foot pedal unit allows the patient to perform bicycle training, thereby helping the patient's leg nerve rehabilitation; the first hand-cranked drive unit allows the patient to extend their arm forward and crank the first rocker arm to drive the foot pedal unit to rotate; and the second hand-cranked drive unit allows the patient to extend their arm downward and crank the second rocker arm to drive the foot pedal unit to rotate. This allows the patient to improve the fatigue of their arm during the cranking process by changing the posture and position of their arm. At the same time, the patient can recover arm strength during training by cranking with one hand. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 for Figure 1 An enlarged view of part A shown;

[0019] Figure 3 This is a side sectional view of the present invention;

[0020] Figure 4 This is a partial rear cross-sectional view of the seat section with the linkage part of the present invention in the first state;

[0021] Figure 5 This is a partial rear cross-sectional view of the seat section with the linkage part of the present invention in the second state;

[0022] Figure 6 This is a rear cross-sectional view of the conversion unit in the second state of the linkage unit in the present invention.

[0023] Figure 7 This is a rear sectional view of the slide bar and slider in this invention;

[0024] Figure 8 This is a top view of the slider and slide block in this invention;

[0025] Figure 9 This is a schematic diagram of the fit between the elongated hole and the spiral groove in this invention.

[0026] Figure 10 This is a partial rear cross-sectional view of another embodiment of the seat portion in which the linkage part is in the first state according to the present invention.

[0027] The meanings of the labels in the attached diagram are as follows:

[0028] Base - 1; Casters - 11;

[0029] Seat section -2; Seat cushion -21; Surrounding edge -22; Mounting cavity -23; Fourth bearing -24; Connecting hole -25; Storage slot -26;

[0030] Foot pedal unit-3; support base-31; rotating disk-32; second rotating rod-321; rotating disk-322; second transmission gear-323; foot pedal-33; support frame-34; first cavity-35; movable through hole-36;

[0031] First hand-cranked drive unit-4; First rocker arm-41; First transmission group-42; Bracket-421; First gear group-422; First transmission gear-4221; Second cavity-423; Slot-424;

[0032] Second hand-cranked drive unit - 5; Second transmission group - 51; Second gear group - 511; Third transmission gear - 5111; First rotating rod - 512; Linkage part - 52; Sleeve - 521; Slide rod - 522; Gear tooth - 5221; Fixing block - 5222; Inner tube - 5223; Outer tube - 5224; Sliding column - 5225; Vertical rod - 5226; Spiral groove - 5227; Second spring - 5228; Long hole - 5229; First spring - 523 ; Slider-524; Hole-5241; Sliding structure-525; Circular slide rail-5251; Spherical slide foot-5252; Cam-526; Protruding end-5261; Slide groove-5262; Conversion part-527; Limiting cylinder-5271; Meshing tooth-5272; Engaging groove-5273; Meshing groove-5274; Servo motor-528; Fifth transmission gear-529; Second rocker arm-53; Connecting rod-54; Clearance groove-541. Detailed Implementation

[0033] The invention will now be further described with reference to the accompanying drawings.

[0034] Reference Figures 1 to 8As shown, the lower limb nerve rehabilitation training device of the present invention includes a base 1, a seat portion 2 protruding upward from the rear side of the base 1, a foot pedal unit 3 disposed on the base 1 and located in front of the seat portion 2, a first hand-cranked drive unit 4 disposed on the base 1 and also located in front of the seat portion 2, and a second hand-cranked drive unit 5 disposed on the seat portion 2 and in transmission cooperation with the foot pedal unit 3. The first hand-cranked drive unit 4 is also in transmission cooperation with the foot pedal unit 3. The foot pedal unit 3 is used to support the patient's feet and legs. After the foot pedal unit 3 is in operation, the foot pedal unit 3 enables the patient's legs to swing up and down alternately for bicycle training. This device aims to delay lower limb muscle atrophy, improve coronary blood flow, promote lower limb blood circulation, strengthen motor nerve conduction, and promote the recovery of motor nerve function. A first rocker arm 41 is located at the top of the first hand-cranked drive unit 4, above the foot pedal unit 3 and the seat 2. By cranking the first rocker arm 41, the first hand-cranked drive unit 4 can be driven to operate the foot pedal unit 3. The power to operate the foot pedal unit 3 comes from the patient's arm cranking the first rocker arm 41. The first rocker arm 41 is located on the front side of the patient when seated on the seat 2. The patient cranks the first rocker arm 41 by extending their arm forward and grasping it. The first rocker arm 41 is cranked by hand. During this process, the arm exerts force to crank the first rocker arm 41, causing the first hand-cranked drive unit 4 to operate via transmission with the foot pedal unit 3. A second rocker arm 53 is located on the left and right sides of the seat cushion 21, next to the second hand-cranked drive unit 5. Cranking the second rocker arm 53 drives the second hand-cranked drive unit 5, which in turn drives the foot pedal unit 3. When the patient's arm becomes weak and sore from using the first rocker arm 41, they can lower their arm and let it hang down to their sides, then grasp the second rocker arm 53 and crank it. During this process, the arm exerts force to crank the second rocker arm 53. The force exerted by the hand crank 53 causes the second hand crank drive unit 5 to rotate, which in turn causes the foot pedal unit 3 to operate through the transmission between the second hand crank drive unit 5 and the foot pedal unit 3. The drooping arm relieves and relaxes the soreness caused by poor blood circulation due to the first hand crank 41, thereby alleviating arm fatigue to a certain extent and increasing the time for the patient to assist in driving the foot pedal unit 3. At the same time, the patient can quickly recover from arm muscle soreness by alternating the use of the second hand crank 53, or by alternating the use of the first hand crank 41. Compared with alternating the first hand crank 41, alternating the use of the second hand crank 53 is relatively easier.

[0035] The bottom of the base 1 can be symmetrically equipped with casters 11, which facilitates handling and movement.

[0036] The seat part 2 protrudes upward from the rear side of the bottom and is integrally formed. A seat cushion 21 is provided on the top surface of the seat part 2. The seat cushion 21 is filled with sponge, and the surface of the seat cushion 21 is made of leather material. The seat part 2 protrudes upward on the rear side and the left and right sides of the seat cushion 21 to form a surrounding edge 22. An activity space is formed between the top surface of the base 1 and the front side of the seat part 2 to facilitate the movement of the patient's legs. When the patient sits on the seat cushion 21, the patient's legs naturally face the activity space and are located within the activity space.

[0037] The foot pedal unit 3 is located within the activity space so that the patient's legs can be placed on the foot pedal unit 3 after sitting on the seat cushion 21. The foot pedal unit 3 includes a support base 31 fixedly connected to the top surface of the base 1 and located within the activity space, a rotating disk 32 rotatably mounted on the support base 31, two foot pedals 33 respectively connected to the two sides of the rotating disk 32 and capable of rotation, and two foldable and retractable support frames 34. The two foot pedals 33 are arranged in opposite directions along the radial direction of the rotating disk 32. When the rotating disk 32 is driven by the first hand-cranked drive unit 4 or the second hand-cranked drive unit 5, or when the patient's lower limbs can exert force to step on the foot pedals 33, the two foot pedal units 3 rotate in opposite directions along the outer edge of the rotating disk 32, thereby causing the patient's two feet placed on the two foot pedals 33 to drive the legs to swing alternately, so as to realize the bicycle movement and thus achieve the purpose of exercising the nerves of the lower limbs for rehabilitation. One end of each of the two support frames 34 is hinged to the top front of the seat 2, and the other end of each of the two support frames 34 is hinged to the two foot pedals 33 respectively. After the patient's feet are supported on the foot pedals 33, the patient's legs are naturally supported on the support frames 34. The foldable support frames 34 allow the entire support frame 34 to be bent into two sections, thereby supporting the patient's thighs and calves respectively. At the same time, when facing patients of different heights, the length of the support frame 34 can be adjusted so that the patient's legs can be comfortably supported on the support frame 34, avoiding the problem that different people cannot complete the training due to the support frame 34 being too long or too short.

[0038] Reference Figure 1 and Figure 3As shown, the top surface of the support base 31 is lower than the top surface of the cushion 21. A first cavity 35 is formed inside the support base 31, and a movable through hole 36 is horizontally formed on the support base 31 in the left-right direction, passing through the support base 31 and connecting to the first cavity 35. The movable through hole 36 is a cylindrical hole, and the rotating disk 32 can be movably inserted into the movable through hole 36. The rotating disk 32 includes a second rotating rod 321 located in the movable through hole 36 and coaxially distributed with the movable through hole 36, and two rotating disks 322 fixedly connected to both ends of the second rotating rod 321 and coaxially arranged with the second rotating rod 321. Both rotating disks 322 are circular and their diameter is smaller than the diameter of the movable through hole 36. A connecting block is formed protruding from the inner wall of the first cavity 35 along the radial direction of the movable through hole 36. A rotating through hole is formed on the connecting block along the axial direction of the movable through hole 36. A first bearing is fixedly installed in the rotating through hole. The first bearing is coaxially distributed with the movable through hole 36. The second rotating rod 321 is fixedly inserted into the first bearing so that the second rotating rod 321 can rotate relative to the movable through hole 36 along its own central axis, thereby driving the two turntables 322 to rotate synchronously. The second rotating rod 321 is connected to the first hand-cranked drive unit 4 and the second hand-cranked drive unit 5 respectively, so that the second rotating rod 321 can be driven to rotate when one of the first rocker arm 41 and the second rocker arm 53 is rocked or both are rocked. Two turntables 322 are located at the open ends of the movable through hole 36, and there is a gap of about one centimeter between the side wall of the turntable 322 and the inner wall of the movable through hole 36. This allows the turntable 322 to rotate relative to the movable through hole 36 while also partially blocking the movable through hole 36, thus preventing large objects from entering the movable through hole 36 and the first cavity 35. Support rods are fixedly installed on the side of each turntable 322 facing the movable through hole 36, parallel to the second rotating rod 321. The two support rods are respectively positioned on opposite sides of the second rotating rod 321 along the radial direction of any turntable 322, with the second rotating rod 321 as the axis. Both support rods are located near the edge of the corresponding turntable 322's side wall. Both support rods are movably fitted with circular tubes, which can rotate around the circumference of the support rods. Two foot pedals 33 are fixedly mounted on the top of these circular tubes, positioned on either side of the second rotating rod 321 relative to the two turntables 322. When the second rotating rod 321 rotates, the patient's feet, placed on the foot pedals 33, move alternately. Each support frame 34 includes a first support rod for supporting the thigh and a second support rod for supporting the lower leg. One end of the first support rod is hinged to the seat portion 2, and the other end is hinged to one end of the second support rod, which is hinged to the foot pedals 33. Both the first and second support rods are telescopic, and restraint straps are provided on both.

[0039] The first hand-cranked drive unit 4 includes a first transmission group 42 that is respectively connected to the first rocker arm 41 and the second rotating rod 321 of the foot pedal unit 3. When the patient shakes the first rocker arm 41, the first rocker arm 41 drives the first transmission group 42 to rotate the second rotating rod 321. The first transmission group 42 includes a bracket 421 located in the active space and connected to the base 1 at its top end, and a first gear group 422 disposed on the bracket 421. The top end of the bracket 421 extends upward and bends toward the side of the seat cushion 21. A rotating shaft is rotatably disposed on the top end of the bracket 421, with both ends extending toward the left and right sides of the bracket 421 respectively. The first rocker arm 41 is disposed on the rotating shaft, and the first gear group 422 is respectively connected to the rotating shaft and the second rotating rod 321 of the foot pedal unit 3, thereby realizing the cooperation between the first rocker arm 41 and the foot pedal unit 3.

[0040] Specifically, the bottom of the bracket 421 is located on the front side of the support base 31 so that the support base 31 is located between the seat part 2 and the bracket 421. A second cavity 423 is formed inside the bracket 421, and the bottom of the second cavity 423 passes through the bottom end of the bracket 421 and communicates with the first cavity 35. The first gear set 422 includes a plurality of first transmission gears 4221 rotatably disposed in the second cavity 423. The plurality of first transmission gears 4221 are distributed sequentially at intervals along the length direction of the bracket 421, and a toothed belt or transmission belt is wound around each adjacent pair of the plurality of first transmission gears 4221 to enable transmission connection between each first transmission gear 4221. Second bearings are fixedly installed on the left and right sides of the top of the bracket 421. The rotating shaft is fixedly inserted into the second bearings and extends out of the left and right sides of the bracket 421 at both ends. A first transmission gear 4221 is fixedly sleeved on the rotating shaft. The first transmission gear 4221 on the rotating shaft is one of the first gear set 422. The other first transmission gears 4221 in the first gear set 422 are installed in the same way as the bracket 421, and will not be described in detail here. There are two first rockers 41, one end of which is fixedly connected to the end of the rotating shaft. The other end of the first rocker 41 is set perpendicular to the rotating shaft and can make circular motion with the rotating shaft as the center. A rocking rod is rotatably set on the other end of the first rocker 41 towards the side away from the rotating shaft to facilitate the patient's rocking.

[0041] Preferably, the bottom end of the bracket 421 is hinged to the base 1, and a limiting member for restricting the rotation of the bracket 421 is provided on the base 1. Specifically, a groove communicating with the first cavity 35 is recessed into the top surface of the base 1. The bottom end of the bracket 421 is cylindrical and its axial direction is parallel to the axis of rotation, and the bottom end of the bracket 421 is located in the groove. Third rotating rods are extended axially on the left and right sides of the bottom end of the bracket 421, and third bearings are fixedly provided on the inner wall of the groove at the positions corresponding to the two third rotating rods. The two third rotating rods are respectively connected to the third bearings so that the bottom end of the bracket 421 can rotate relative to the base 1. A slot 424 communicating with the second cavity 423 and the first cavity 35 is opened along its side wall from the bottom to the upper part on the bottom end of the bracket 421, and a first transmission gear 4221 of a first gear set 422 is rotatably provided at the bottom end of the bracket 421. A first transmission gear 4221 is also rotatably disposed in the first cavity 35, and the first transmission gear 4221 is connected to the first transmission gear 4221 at the bottom of the bracket 421 by a transmission belt or toothed belt. A second transmission gear 323 is fixedly sleeved on the second rotating rod 321. The second transmission gear 323 is connected to the first transmission gear 4221 of the first gear set 422 in the first cavity 35 so that the first gear set 422 can drive the second rotating rod 321 to rotate. A threaded hole is provided on the side of the base 1, which is connected to the inside of the groove. A bolt is screwed into the threaded hole. When the bolt is rotated toward the inside of the groove until it is pressed against the bottom of the bracket 421, the bracket 421 can no longer rotate. The existence of the slot 424 ensures that the toothed belt of the first transmission gear 4221 at the bottom of the bracket 421 and the first transmission gear 4221 in the first cavity 35 will not be affected by the rotation of the bracket 421, so that the transmission can still be engaged. Since patients of different heights have different arm lengths, with the position and height of the seat cushion 21 fixed, the patient can adjust the distance between the rocker arm at the top of the bracket 421 and the patient's chest by rotating the direction of the bracket 421 to adjust to the most suitable distance, so as to avoid increasing the burden on the arm and the difficulty of movement due to the distance being too far or too close.

[0042] The second hand-cranked drive unit 5 includes a second transmission group 51 that is respectively connected to the second rocker arm 53 and the foot pedal unit 3, and a linkage part 52 that is rotatably mounted on the seat part 2 and has a first state and a second state. The second rocker arm 53 is connected to the linkage part 52 and can switch the linkage part 52 between the first state and the second state. When the linkage part 52 is in the first state by the second rocker arm 53, the linkage part 52 is connected to the second transmission group 51. At this time, shaking the second rocker arm 53 can drive the second transmission group 51 through the linkage part 52, thereby driving the second rotating rod 321 of the foot pedal unit 3 to rotate, so that the patient's legs on the foot pedal unit 3 can perform bicycle training. When the linkage part 52 is in the second state by the second rocker arm 53, the linkage part 52 and the second transmission group 51 are disconnected. At this time, shaking the second rocker arm 53 will not drive the second transmission group 51. Thus, when the patient uses the first rocker arm 41 to shake, the patient can disconnect the connection between the second transmission group 51 and the linkage part 52, thereby reducing the difficulty of operation.

[0043] The second transmission assembly 51 includes a second gear set 511 disposed in the seat part 2 and a first rotating rod 512 rotatably disposed in the seat part 2 and parallel to the rotating shaft. The second gear set 511 is respectively connected to the second rotating rod 321 and the first rotating rod 512 so that the first rotating rod 512 and the second rotating rod 321 can rotate synchronously with the second gear set 511. The linkage part 52 cooperates with the end of the first rotating rod 512 to realize the conversion between the first state and the second state.

[0044] In this embodiment, two mounting cavities 23 are symmetrically formed inside the seat part 2, each communicating with the first cavity 35. Two linkage parts 52 are provided and installed in the two mounting cavities 23 respectively. A first through hole communicating with the two mounting cavities 23 is opened on the seat part 2 between the two mounting cavities 23 along a direction parallel to the rotation axis. A fourth bearing 24 is fixedly installed in the first through hole. The first rotating rod 512 is fixedly inserted into the fourth bearing 24, and both ends of the first rotating rod 512 pass through the first through hole and extend into the two mounting cavities 23 respectively, so that the first rotating rod 512 can rotate freely relative to the mounting cavity 23. The second gear set 511 includes a plurality of third transmission gears 5111 rotatably disposed within the mounting cavity 23. These third transmission gears 5111 are spaced vertically apart, and adjacent third transmission gears 5111 are wound with toothed belts or transmission belts to enable transmission between them. A third transmission gear 5111, which is connected to the other third transmission gears, is fixedly sleeved on the first rotating rod 512. Rotation of the first rotating rod 512 drives all the third transmission gears 5111 to rotate synchronously. The lowest third transmission gear 5111 is connected to the first transmission gear 4221 located in the first cavity 35 via a toothed belt. It should be noted that each first transmission gear 4221 and third transmission gear 5111 has two rings of teeth 5221 formed around its outer side wall, so that any one of the first transmission gear 4221 or third transmission gear 5111 can simultaneously be connected to other gears via two toothed belts without interference between the belts.

[0045] On the left and right outer walls of the seat part 2, there are connecting holes 25 that connect to the mounting cavity 23 respectively. Two linkage parts 52 are provided and are respectively disposed in the two connecting holes 25. Each linkage part 52 includes a sleeve 521 fixedly disposed in the mounting cavity 23, a slide rod 522 slidably disposed on the sleeve 521 and coaxially disposed with the first rotating rod 512, a first spring 523 with one end connected to the slide rod 522 and the other end connected to the sleeve 521, a slider 524 disposed on the end of the first slide rod 522 away from the first rotating rod 512, a cam 526 rotatably disposed in the connecting hole 25 via a sliding structure 525, and a conversion part 527 formed on the first rotating rod 512 and the end of the first slide rod 522 near the first rotating rod 512 respectively. Simultaneously, the slide rod 522 can move relative to the sleeve 521. The second rocker arm 53 is hinged to a connecting rod 54 that is fixedly connected to the cam 526 and arranged coaxially. The slider 524 is slidably disposed on the cam 526 and always slides and engages with the cam 526 when the cam 526 rotates. When the connecting rod 54 is rotated by applying force to the connecting rod 54, causing the cam 526 to rotate under the action of the sliding structure 525 and make the connecting rod 54 coaxial with the slide rod 522, the side of the cam 526 away from the connecting rod 54 presses the slide rod 522 towards the slide rod 522 and causes the first spring 523 to contract. The conversion part 527 makes the first rotating rod 512 and the slide rod 522 drively connected to form the first state. When the second rocker arm 53 is rotated, the cam 526, the slide bar 522, and the first rotating rod 512 rotate, driving the second gear set 511 to run and driving the second rotating rod 321 to rotate. When the cam 526 rotates under the action of the sliding structure 525 by applying force to the connecting rod 54, making the connecting rod 54 perpendicular to the slide bar 522, the side of the cam 526 near the connecting rod 54 faces the slide bar 522, so that the slider 524 slides to the side of the cam 526 near the connecting rod 54, and the conversion part 527 disconnects the connection between the first rotating rod 512 and the slide bar 522 to form a second state. When the second rocker arm 53 is rotated, the cam 526 and the slide bar 522 will still rotate, but the first rotating rod 512 will no longer rotate.

[0046] The connecting hole 25 is cylindrical and coaxially arranged with the first rotating rod 512. The sleeve 521 is fixedly installed on the inner wall of the mounting cavity 23. A second through hole is formed on the sleeve 521 and is coaxially distributed with the first rotating rod 512. A number of balls are equidistantly arranged around the inner wall of the second through hole. The slide rod 522 is a cylindrical rod-shaped structure. One end of the slide rod 522 passes through the second through hole, and each ball extends to the outer wall of the slide rod 522 so that the slide rod 522 can slide axially relative to the second through hole. At the same time, the slide rod 522 can rotate about its own central axis relative to the second through hole. The first spring 523 is a compression spring, located between the sleeve 521 and the slider 524. Both ends of the first spring 523 are connected to the slider 524 and the sleeve 521, respectively. The sleeve 521 is located between the first rotating rod 512 and the fixing block 5222. In this embodiment, the first spring 523 is always in a compressed state, so that it always presses the slider 524 towards the connecting cylinder side to push the sliding rod 522 towards the cam 526. The slider 524 is fixedly mounted at the end of the sliding rod 522 away from the sleeve 521. The cam 526 is mounted at the communicating hole 25 through a sliding structure 525. The cam 526 is connected to a flat surface on one side of the connecting rod 54, thus saving material. The cam 526 has a protruding end 5261 on the side away from the connecting rod 54, facing the slide rod 522, so that the cam 526 is in the shape of a half-rugby ball or a semi-elliptical plate. The connecting rod 54 is coaxial with the cam 526. When the cam 526 is rotated and the protruding end 5261 faces the slide rod 522, the slider 524 slides to the protruding end 5261. At this time, the cam 526, the connecting rod 54, the slide rod 522 and the first rotating rod 512 are coaxial. The conversion part 527 makes the slide rod 522 and the first rotating rod 512 connected by transmission, thereby forming the first state of the linkage part 52. When the cam 526 is rotated and the side of the cam 526 close to the connecting rod 54 faces the slide rod 522, the slider 524 also slides to the cam 526. At this time, the connecting rod 54 is perpendicular to the slide rod 522, and the conversion part 527 disconnects the connection between the slide rod 522 and the first rotating rod 512, thereby forming the second state of the linkage part 52. A groove 5262 is provided on the cam 526 at the position corresponding to the slider 524, along the outer wall of the cam 526, through the protruding end 5261 of the cam 526 to the side near the connecting rod 54, to slide and engage with the slider 524. The slider 522 always slides toward the cam 526 under the action of the first spring 523, while the slider 524 is always located in the groove 5262. Even if the cam 526 is rotated, the slider 524 can always slide in the groove 5262 under the action of the first spring 523.The slider 524 has a circularly shaped flange protruding from the side facing the slide groove 5262 and the side facing the cam 526. The slide groove 5262 has a first groove section on the side near the slider 524, through which the slider 524 can move but the flange cannot pass. The slide groove 5262 has a second groove section on the side away from the slider 524, through which the flange can move so that the slider 524 can slide in the slide groove 5262 while not disengaging from the slide groove 5262 and engaging with the slide groove 5262.

[0047] As a preferred option, such as Figures 7-9As shown, the slide rod 522 includes an inner tube 5223 that is slidably and rotatably mounted on a sleeve 521, an outer tube 5224 that is rotatably mounted on the end of the inner tube 5223 away from the sleeve 521, and a slide column 5225 that is slidably mounted inside the inner tube 5223 and movably passed through the outer tube 5224 at the other end. A vertical rod 5226 is provided on the end of the slide column 5225 located inside the inner tube 5223 along the radial direction of the inner tube 5223. On the side wall of the inner tube 5223 that is mounted with the outer tube 5224... An elongated hole 5229 is formed along the axial direction of the inner tube 5223. A spiral groove 5227 corresponding to the elongated hole 5229 is formed on the side wall of the outer tube 5224 that is fitted with the inner tube 5223. The inner tube 5223 cannot move axially relative to the outer tube 5224, so that the length of the entire sliding rod 522 does not change. The sliding column 5225 can slide along the axial direction of the sliding rod 522, and the slider 524 is fixedly connected to the end of the outer tube 5224 away from the inner tube 5223. Specifically, a sliding groove can be provided on the inner wall of the inner tube 5223, and a sliding block can be provided on the end of the sliding column 5225 or the vertical rod 5226 away from the spiral groove 5227 and the sliding block can slide in the sliding groove. The end of the vertical rod 5226 away from the sliding column 5225 can slide relative to the length direction of the spiral groove 5227. A fixing block 5222 is formed on one end of the slide column 5225 that extends into the outer tube 5224, that is, the end of the slide column 5225 away from the inner tube 5223. A second spring 5228 is sleeved on the end of the slide column 5225 that extends into the outer tube 5224. The second spring 5228 is also a compression spring. The two ends of the second spring 5228 are respectively connected to the fixing block 5222 and the slider 524. At the position of the slider 524 directly opposite the second spring 5228, a hole 5241 is opened through the slide rod 522 along the axial direction to connect the inner and outer cavities of the outer tube 5224. The end of the slide column 5225 away from the inner tube 5223 is movably inserted into the hole 5241.When the slider 524 is rotated, it drives the outer tube 5224 to rotate coaxially. Simultaneously, due to the rotational engagement of the inner tube 5223 and the outer tube 5224, the inner tube 5223 does not rotate with the outer tube 5224 under the resistance of the second gear set 511. When the outer tube 5224 rotates, the end of the vertical rod 5226 that movably passes through the spiral groove 5227 is pressed against the inner wall of the spiral groove 5227 on the outer tube 5224 and slides towards the slider 524. Meanwhile, the second spring 5228 remains in a contracted state and presses against the fixing block 5222 towards the inner tube 5223. When rod 5226 slides to the end of elongated hole 5229 near slider 524, slide column 5225 can no longer slide. At this time, under the obstruction of vertical rod 5226, inner tube 5223 is squeezed by vertical rod 5226 and rotates synchronously with outer tube 5224. Slide column 5225 slides so that the end away from inner tube 5223 passes out of hole 5241. When outer tube 5224 is rotated in the opposite direction, vertical rod 5226 is squeezed back in the opposite direction by spiral groove 5227. At the same time, second spring 5228 squeezes fixed block 5222 towards inner tube 5223 and drives slide column 5225 towards inner tube 5223. Preferably, a through hole is provided on the protruding end 5261 of the cam 526 for inserting the slide bar 5225. When the linkage 52 is in the first state, the through hole faces the slider 524 and is coaxially distributed with the hole 5241. Rotating the second rocker arm 53 drives the outer tube 5224, causing the vertical rod 5226 to move from one end of the spiral groove 5227 near the inner tube 5223 to the other end. The end of the slide bar 5225 away from the inner tube 5223 passes through the hole 5241 and inserts into the through hole. At this time, the cam 526 is locked by the slide bar. Since the cam 526 itself can rotate due to the sliding structure 525 when the user rotates the second rocker arm 53 in the first state of the linkage 52, when the user shakes the second rocker arm 53, it may be because... Uneven force and different directions of force cause the cam 526 to change from a state coaxial with the slide bar 522 to a state tilted relative to the slide bar 522 during rotation. As a result, it is difficult for the user to drive the slide bar 522 to continue rotating when shaking the second rocker arm 53. In this embodiment, after the slide bar 5225 is inserted into the through hole, the cam 526 can no longer deflect relative to the slide bar 522 and is locked. When the vertical rod 5226 slides from one end to the other as the outer tube 5224 rotates and the outer tube 5224 continues to rotate, the restriction of the spiral groove 5227 and the elongated hole 5229 prevents the vertical rod 5226 from sliding further, so that the vertical rod 5226 drives the inner tube 5223 to rotate synchronously with the outer tube 5224, thus ensuring the rotation of the entire slide bar 522. It should be noted that a bearing is fixedly sleeved on the outer wall of the inner tube 5223 near the outer tube 5224, while the outer tube 5224 near the inner tube 5223 is sleeved on the bearing to realize the rotational connection between the inner tube 5223 and the outer tube 5224.

[0048] The sliding structure 525 includes an annular slide rail 5251 recessed around the periphery of the connecting hole 25 and a spherical slide foot 5252 rotatably mounted on the cam 526 and perpendicular to the slide rod 522. The two ends of the spherical slide foot 5252 extend out of the cam 526, and each end of the spherical slide foot 5252 has a spherical sliding head. Both sliding heads are slidably mounted in the annular slide rail 5251. Meanwhile, the cam 526 is located at the center of the annular slide rail 5251. The spherical slide foot 5252 and the annular slide rail 5251 cooperate with each other to make the cam 526 rotate after the connecting rod 54 is coaxial with the slide rod 522. After the second rocker arm 53 is rocked, the cam 526 rotates and drives the slide rod 522 to rotate through the slider 524 engaged in the slide groove 5262.

[0049] A third through hole, perpendicular to and passing through the slide rod 522, is formed on the cam 526. A spherical slide foot 5252 is disposed within the third through hole, and a fifth bearing is fixedly disposed within the third through hole. The third through hole is fixedly disposed within the fifth bearing so that the cam 526 can rotate around the spherical slide foot 5252 as an axis. The connecting rod 54 oscillates relative to the cam 526 to adjust the state of the connecting rod 54 and the cam 526 relative to the slide rod 522. The sliding heads at both ends of the spherical slide foot 5252 slide against the annular slide rail 5251 to provide support for the convex ring. The inner wall of the annular slide rail 5251 has an arc-shaped surface adapted to the sliding heads to facilitate the sliding of the sliding heads within the annular slide rail 5251 and reduce friction, thereby enabling the cam 526 to rotate. After the connecting rod 54 rotates to be coaxial with the slide rod 522, the connecting rod 54 and the cam 526 can rotate together.

[0050] Preferably, a storage groove 26 adapted to the connecting rod 54 is provided on the outer wall of the seat part 2. The storage groove 26 is connected to the connecting hole 25. A portion of an annular slide rail 5251 is provided at the hinge point between the storage groove 26 and the connecting hole 25. A clearance groove 541 is provided on the connecting rod 54 at a position corresponding to the annular slide rail 5251. When the linkage part 52 is in the second state, the connecting rod 54 is located in the storage groove 26. The connecting rod 54 is supported on the annular slide rail 5251 through the clearance groove 541, thereby completing the storage of the connecting rod 54. When the second rocker arm 53 is not needed, it prevents the connecting rod 54 from extending laterally outside the connecting hole 25 and easily getting caught on foreign objects, thus avoiding obstruction of the patient's use of the device. Preferably, the second rocker arm 53 is hinged to the end of the connecting rod 54 away from the cam 526 so that it can rotate relative to the connecting rod 54. At the same time, the structure of the second rocker arm 53 is the same as that of the regular rocker arm, and will not be described again here.

[0051] Reference Figure 5As shown, the conversion part 527 includes a limiting cylinder 5271 fixedly disposed on the end of the first rotating rod 512 and a meshing tooth 5272 formed on the end of the slide rod 522 facing the first rotating rod 512. A locking groove 5273 is formed on the end of the limiting cylinder 5271 facing the slide rod 522 along the axial direction of the limiting cylinder 5271. A meshing groove 5274 adapted to the meshing tooth 5272 is formed in the locking groove 5273.

[0052] In use, when the cam 526 is rotated outward toward the storage slot 26, during the rotation, the protruding end 5261 of the cam 526 gradually moves toward the slide rod 522, while the slider 524 slides from the edge of the cam 526 near the connecting rod 54 toward the protruding end 5261 until it is behind the protruding end 5261. The slide rod 522 then slides toward the cam 526, and the meshing teeth 5272 gradually disengage from the meshing groove 5274. At this time, the connecting rod 54 is coaxial with the slide rod 522, switching the linkage part 52 from the second state to the first state. Shaking the second rocker arm 53 at this time can drive the foot pedal unit 3. Rotating the second rocker arm 53 in the forward direction causes the vertical rod 5226 to slide in the spiral groove 5227 until the slide post 5225 passes through the hole 5241 and into the slot to lock the cam 526. When it is necessary to rotate the connecting rod 54 toward the storage slot 26, the reverse direction is used. The second rocker arm 53 is moved so that the vertical rod 5226 slides in the reverse direction in the spiral groove 5227 until the slide column 5225 retracts into the hole 5241. The slide column 5225 disengages from the insertion hole. At this time, the connecting rod 54 is rotated so that the protruding end 5261 rotates around the spherical slide foot 5252 of the cam 526 facing the slider 524. The slider 524 slides along the groove 5262 and gradually slides to the edge of the cam 526 near the connecting rod 54 until it is located there. The slide rod 522 is gradually squeezed by the protrusion and slides towards the first rotating rod 512. The slide rod 522 gradually enters the engagement groove 5273 and the meshing teeth 5272 gradually approach the engagement groove 5274 until they are engaged. At this time, the connecting rod 54 is perpendicular to the slide rod 522 and the connecting rod 54 is located in the storage groove 26. The linkage part 52 switches from the first state to the second state. After rotating the second rocker arm 53, neither the connecting rod 54 nor the second rocker arm 53 will hinder the use of the seat part 2.

[0053] Reference Figure 9As shown, in another embodiment, the second rocker arm 53 is replaced with a servo motor 528. The servo motor 528 is set as one and set in any mounting cavity 23. In this embodiment, the outer side wall of the slide rod 522 with meshing teeth 5272 is provided with gear teeth 5221 around the circumference of the slide rod 522. A mounting block is fixedly set in the mounting cavity 23 where the gear teeth 5221 are located. A fifth transmission gear 529 that meshes with the gear teeth 5221 of the slide rod 522 is mounted on the mounting block through a sixth bearing. The axial direction of the fifth transmission gear 529 is parallel to the slide rod 522, and the left and right sides of the tooth groove of the fifth transmission gear 529 are open so that the slide rod 522 can slide even when meshing with the fifth transmission gear 529. The output end of the servo motor 528 is axially connected to the fifth transmission gear 529. When the linkage 52 is in the first state, the gear teeth 5221 on the slide bar 522 mesh with the fifth transmission gear 529. At this time, starting the servo motor 528 can drive the foot pedal unit 3 to run, so that the patient's arm can rest and recover while the foot pedal unit 3 continues to run. When the linkage 52 is in the second state, the gear teeth 5221 on the slide bar 522 disengage from the fifth transmission gear 529. At this time, the patient can drive the foot pedal unit 3 to run by rotating the first rocker arm 41. The switching between manual and automatic operation is achieved by rotating the connecting rod 54.

Claims

1. A lower limb nerve rehabilitation training device, characterized in that: The device includes a base, a seat portion protruding upward from the rear side of the base, a seat cushion on the top surface of the seat portion, a foot pedal unit and a first hand-cranked drive unit that are pulsatingly connected to the foot pedal unit on the base and located at the front side of the seat portion, the first hand-cranked drive unit having a first rocker arm on its top located above the foot pedal unit and the seat cushion, a second hand-cranked drive unit that is pulsatingly connected to the foot pedal unit on the seat portion, and second rocker arms located on the left and right sides of the seat cushion on the sides of the second hand-cranked drive unit, the foot pedal unit operating to drive the patient's lower limbs when one of the first rocker arm and the second rocker arm is cranked; The first hand-cranked drive unit includes a first transmission group that is respectively connected to the first rocker arm and the foot pedal unit. The first transmission group includes a bracket located in the active space and connected to the base at its top, and a first gear set disposed on the bracket. The second hand-cranked drive unit includes a second transmission group that is respectively connected to the second rocker arm and the foot pedal unit; The second hand-cranked drive unit further includes a linkage part rotatably mounted on the seat and having a first state and a second state respectively. The second rocker arm is connected to the linkage part and can switch the linkage part between the first state and the second state. When the linkage part is in the first state, the linkage part is driven to the second transmission group. When the linkage part is in the second state, the linkage part and the second transmission group are disconnected. The second transmission assembly includes a second gear set disposed within the seat portion and a first rotating rod rotatably disposed within the seat portion and parallel to the rotating shaft. The second gear set is respectively connected to the foot pedal unit and the first rotating rod so that the first rotating rod can rotate synchronously with the second gear set. The linkage part cooperates with the end of the first rotating rod. The seat portion has two symmetrically formed mounting cavities inside. The linkage part is configured as two and is installed in the two mounting cavities respectively. The two ends of the first rotating rod extend into the two mounting cavities respectively, and the two ends of the first rotating rod are connected to the two linkage parts respectively. Both sides of the outer wall of the seat portion have connecting holes that connect to the mounting cavity. Each of the two linkage parts includes a sleeve fixedly disposed within the mounting cavity, a slide rod slidably disposed on the sleeve and coaxially arranged with the first rotating rod, a first spring connected at one end to the slide rod and the other end to the sleeve, a slider disposed on the end of the slide rod away from the first rotating rod, a cam rotatably disposed within the connecting hole via a sliding structure, and conversion parts formed on the first rotating rod and the slide rod near the first rotating rod, respectively. The slide rod can rotate relative to the sleeve. A connecting rod is hinged to the second rocker arm, fixedly connected to the cam and coaxially arranged, and the side of the cam away from the connecting rod protrudes towards the slide rod, forming a protruding end. The cam has a groove on its outer wall corresponding to the position of the slider, extending from the protruding end to the side near the connecting rod, which engages with the slider. The first spring extends toward the cam and keeps the slider within the groove. When the connecting rod is coaxial with the slide rod through the sliding structure, the protruding end of the cam faces the slide rod, causing the slider to slide to the protruding end. The switching part connects the first rotating rod and the slide rod to form the first state. When the connecting rod is perpendicular to the slide rod through the sliding structure, the side of the cam near the connecting rod faces the slide rod, causing the slider to slide to the side of the cam near the connecting rod. The switching part disconnects the first rotating rod and the slide rod to form the second state.

2. The lower limb nerve rehabilitation training device as described in claim 1, characterized in that: The top of the bracket extends upward and bends toward the seat cushion. A rotating shaft is rotatably provided on the top of the bracket, with its two ends extending toward the left and right sides of the bracket respectively. The first rocker arm is mounted on the rotating shaft, and the first gear set is connected to the rotating shaft and the foot pedal unit respectively.

3. The lower limb nerve rehabilitation training device as described in claim 1, characterized in that: The sliding structure includes an annular slide rail recessed around the circumference of the connecting hole and a spherical slide foot rotatably mounted on the cam and perpendicular to the slide rod. The two ends of the spherical slide foot extend out of the cam, and each end of the spherical slide foot has a spherical sliding head. Both sliding heads are slidably mounted inside the annular slide rail. A storage groove adapted to the connecting rod is provided on the outer wall of the seat part, and a clearance groove is provided on the connecting rod at the position corresponding to the annular slide rail. When the linkage part is in the second state, the connecting rod is located in the storage groove, and the connecting rod is mounted on the annular slide rail through the clearance groove.

4. The lower limb nerve rehabilitation training device as described in claim 3, characterized in that: The conversion part includes a limiting cylinder fixedly disposed on the end of the first rotating rod and a meshing tooth formed on the end of the slide rod facing the first rotating rod. A locking groove is formed on the end of the limiting cylinder facing the slide rod along the axial direction of the limiting cylinder. A meshing groove adapted to the meshing tooth is formed in the locking groove. When the linkage part is in the first state, the slide rod passes into the locking groove and the meshing tooth engages with the meshing groove.

5. The lower limb nerve rehabilitation training device according to any one of claims 1 to 4, characterized in that: An activity space is formed between the top surface of the base and the front side of the seat to facilitate the movement of the patient's legs. The foot pedal unit includes a support base fixedly connected to the base and located in the activity space, a rotating disk rotatably mounted on the support base, and two foot pedals connected to the two sides of the rotating disk and capable of rotation. The two foot pedals are arranged in opposite directions along the radial direction of the rotating disk. The rotating disk is connected to the linkage part in a transmission manner.

6. The lower limb nerve rehabilitation training device as described in claim 5, characterized in that: The foot pedal unit also includes two foldable and retractable support frames for supporting the patient's legs, one end of each support frame being hinged to the top of the seat and the other end being hinged to the two foot pedals.

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