CN113749902B - A leg exercise device for rehabilitation of orthopedic patients - Google Patents

Abstract

The present invention provides a leg exercise device for rehabilitation of orthopedic patients, comprising a seat, an angle control component for adjusting the angles of the seat plate and the back of the chair, a moving component fixed at the lower end of a box, a leg exercise component, and a leg exercise drive component, comprising a first gear and a second gear respectively arranged on a second rotating shaft and a third rotating shaft near one end of the outer wall of the box, the first gear and the second gear respectively meshingly connected to a first rack and a second rack, and teeth are provided at opposite ends of the first rack and the second rack; the third gear and the fourth gear are respectively connected to the front inner wall of the box through a fourth rotating shaft and a fifth rotating shaft, and the third gear and the fourth gear are respectively meshed with the teeth; a driving pulley is provided on the outer side of the fourth gear, and a driven pulley is provided on the outer side of the third gear, and the driving pulley is connected to the first motor away from the front wall of the box. The present invention is easy to move and has high safety; the exercise methods are diverse, and the exercise interest and durability are increased.

Description

A leg exercise device for rehabilitation of orthopedic patients

Technical Field

The invention relates to the technical field of medical rehabilitation equipment, and in particular to a leg exercise device for rehabilitation of orthopedic patients.

Background technique

At present, most patients who have suffered leg injuries or undergone leg surgery are unable to move independently. Long-term inactivity can lead to muscle atrophy and inability to move normally, or even inability to take care of themselves. Therefore, leg exercise and rehabilitation become particularly critical for patients.

When orthopedic patients exercise, they need special leg rehabilitation exercise equipment to exercise. Most of the existing leg exercise equipment for orthopedic patients are placed in special rehabilitation exercise rooms. For patients with limited mobility, it is extremely inconvenient to go to the rehabilitation exercise room for exercise. Medical staff or family members are required to assist in going there. Patients cannot persist for a long time, which increases the workload of medical staff and family members. Some existing leg exercise devices have a single function and can only be used for knee flexion exercises while sitting. They cannot be used for prone exercises or alternating exercises of the legs. The purpose of fully exercising the patient's legs is not achieved and the effect is not good.

In summary, there is an urgent need to design a leg exercise device for rehabilitation of orthopedic patients that overcomes the above problems.

Summary of the invention

The object of the present invention is to provide a leg exercise device for rehabilitation of orthopedic patients which overcomes the above-mentioned problems.

In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a leg exercise device for rehabilitation of orthopedic patients, comprising:

A seat, comprising a seat plate, a seat back rotatably connected to the seat plate via a first rotating shaft, and a box body arranged at the lower end of the seat plate, wherein the rear sides of the seat plate and the seat back are provided with an angle control component for adjusting the angles of the two;

A moving assembly, which is fixedly mounted at the lower end of the box;

A leg exercise assembly, comprising a left leg bracket and a right leg bracket, which are rotatably arranged at the front end of the seat plate through a second rotating shaft and a third rotating shaft respectively, and are located between the left and right side walls of the box body;

A leg exercise driving assembly is arranged inside the box body, and comprises a first gear and a second gear respectively arranged on the second rotating shaft and the third rotating shaft near one end of the outer wall of the box body, the first gear and the second gear are respectively meshed and connected with a first rack and a second rack, and the first rack and the second rack are provided with teeth at opposite ends; a third gear and a fourth gear are respectively connected to the front inner wall of the box body through a fourth rotating shaft and a fifth rotating shaft, and the third gear and the fourth gear are respectively meshed with the teeth on the first rack and the second rack; a driving pulley is arranged on the outer side of the fourth gear, and a driven pulley is arranged on the outer side of the third gear, and the driving pulley and the driven pulley are connected through a belt transmission; a first motor is connected to the side of the driving pulley away from the front wall of the box body;

The lower ends of the first rack and the second rack are respectively provided with a driving switching assembly for switching between active exercise and passive exercise;

The first rack and the second rack can drive the first gear and the second gear to rotate 0°-90° respectively.

The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

Further, the drive switching assembly includes a lead screw arranged at the lower end of the box body through a support, a lead screw nut slidably arranged on the lead screw, a slide rail vertically arranged at the upper end of the lead screw nut, and a slider slidably arranged on the slide rail, and one end of the slider is fixedly connected to the lower ends of the first rack and the second rack respectively;

Both ends of the lead screw are connected between the two supports via second bearings respectively, and one end of the lead screw is connected to the second motor.

Further, the angle control assembly includes support rods arranged at both ends of the rear side of the box body and a third rack located in the box body and one end of which is passed through the support rod, and a fifth gear is respectively passed through both ends of the first rotating shaft, and the fifth gear is meshed with the third rack;

The other end of the third rack is provided with an arc-shaped bayonet with internal teeth, and the rear ends of the first rack and the second rack are provided with extension rods, the ends of the extension rods are provided with arc-shaped protrusions matching the arc-shaped bayonet, and the outer wall of the arc-shaped protrusions is provided with external teeth that mesh with the internal teeth of the arc-shaped bayonet.

Furthermore, a cavity is provided inside the support rod, and a leather cup is provided at the end of the third rack, and the leather cup can slide back and forth along the cavity driven by the third rack;

An elastic support member is provided on the upper surface of one end of the support rod away from the box body, and the other end of the elastic support member is fixedly connected to the back side of the chair back;

The elastic support member is a retractable airbag, and the retractable airbag is in close communication with the cavity.

Furthermore, an inflatable waist pad is provided on the side of the chair back that contacts the human body, and the inflatable waist pad is communicated with the interior of the retractable airbag.

Furthermore, it also includes armrests arranged on both sides of the seat plate, the armrests are provided with square through holes that pass through from top to bottom, and the upper ends of the square through holes are covered with elastic fabric;

The upper end of the box body is provided with a through hole corresponding to the square through hole, and the first rack and the second rack can pass through the square through hole and move up and down or forward and backward.

Furthermore, the upper ends of the first rack and the second rack are both provided with grooves, the bottom of the groove is connected with a spring, and the upper end of the spring is provided with a hemispherical massage head.

Furthermore, foot rests are respectively provided at the ends of the left leg bracket and the right leg bracket, straps are provided on one side of the left leg bracket and the right leg bracket, Japanese-shaped buckles are provided on the left leg bracket and the right leg bracket at the opposite ends of the straps, and the straps can pass through the Japanese-shaped buckles for self-adhesion.

Furthermore, the foot rest is connected to the left leg bracket and the right leg bracket respectively through a universal joint.

Furthermore, the mobile assembly includes a base, universal wheels arranged at four feet at the bottom of the base, and a hydraulic telescopic rod arranged between the base and the box;

A foot control panel is provided on one side of the hydraulic telescopic rod.

1. The leg exercise device for rehabilitation of orthopedic patients of the present invention is provided with a movable component at the bottom, which is convenient for patients to exercise at any time in the ward or outdoors, thereby increasing the durability of patients' exercise and reducing the workload of patients' family members or medical staff.

2. A leg exercise device for rehabilitation of orthopedic patients of the present invention is respectively provided with a left leg bracket and a right leg bracket, and alternate exercise of the two calves is realized through a leg exercise driving component, which has high flexibility and conforms to people's exercise habits, so that patients feel more comfortable during exercise and the exercise effect is enhanced to a certain extent; specifically, two gears are respectively driven to rotate in the same direction by a double pulley, and the two gears drive the racks meshing with them to alternately move up and down, that is, one of the two racks moves upward or downward, and the other moves in the opposite direction; and teeth are also provided on the other side walls of the two racks, and the teeth are also meshed and connected with gears, and the two gears are just installed on the ends of the shafts on which the left leg bracket and the right leg bracket are installed, respectively. The two gears are respectively driven by the two racks to make rotational motions in opposite directions, thereby driving the left leg bracket and the right leg bracket to make rotational motions in opposite directions with their axes as the center, so that the patient's calves can be exercised alternately, and the purpose of rehabilitation exercise is achieved, and the structure is stable and the safety is high.

3. In the leg exercise device for rehabilitation of orthopedic patients of the present invention, the backrest and the seat plate are connected via a first rotating shaft, and the angle can be adjusted; in order to limit the angle between the two, an angle regulating component is provided at the rear side of the two.

Specifically, the angle control component includes support rods arranged at both ends of the rear side of the box body and a third rack located in the box body and one end of which is passed through the support rod. Fifth gears are respectively passed through both ends of the first rotating shaft, and the fifth gear is meshed with the third rack. In order to drive the fifth gear to rotate through the third rack, the arc-shaped bayonet of the third rack is engaged with the arc-shaped protrusions on the extension rods at the rear ends of the first rack and the second rack, so that the first rack and the second rack can be moved back and forth by driving the switching component, driving the third rack to move back and forth, and then the fifth gear is rotated, driving the chair back to rotate, thereby achieving angle adjustment. The entire structure is cleverly connected and no separate motor drive is required, thus realizing multiple functions of one object and saving resources.

4. A leg exercise device for rehabilitation of orthopedic patients of the present invention can lay the chair back flat through an angle adjustment component so that the patient can exercise in a prone position. When lying prone, the foot rest can be rotated outward 180 degrees through the universal joint between the foot rest and the leg rest. At the same time, the rack in the leg exercise drive component is moved backward through the drive switching component, and the left leg bracket and the right leg bracket are rotated to make them flat. Then, the rack of the leg exercise drive component is moved forward by the drive switching component until the rack and the gear are fully meshed. Then, the patient can lie prone to perform calf flexion and extension exercises. The exercise method is adjustable, which increases the interest of the rehabilitation exercise, enables the patient to exercise more persistently, and increases the exercise effect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of a leg exercise device for rehabilitation of orthopedic patients provided by the present invention;

FIG2 is a side cutaway schematic diagram of a box body according to an embodiment of the present invention;

3 is a schematic cross-sectional view of the rear side of the box body according to an embodiment of the present invention;

FIG4 is a top view of the leg exercise device for rehabilitation of orthopedic patients provided by the present invention;

FIG5 is an enlarged schematic diagram of point A in FIG2;

6 is a top view of the arc-shaped bayonet and the arc-shaped protrusion in cooperation with each other in an embodiment of the present invention;

Description of reference numerals:

1. Seat; 11. Seat plate; 12. Seat back; 121. Inflatable lumbar cushion; 13. Box; 131. Observation window; 14. First rotating shaft; 15. Armrest; 151. Square through hole; 152. Elastic fabric; 16. First bearing;

2. Angle adjustment component; 21. Support rod; 211. Cavity; 22. Third rack; 221. Leather cup; 23. Fifth gear; 24. Arc bayonet; 25. Extension rod; 26. Arc convex column; 27. Elastic support member;

3. Mobile assembly; 31. Base; 32. Universal wheel; 33. Hydraulic telescopic rod; 34. Foot control panel;

4. Leg exercise assembly; 41. Left leg bracket; 411. Strap; 412. Japanese buckle; 42. Right leg bracket; 43. Second rotating shaft; 44. Third rotating shaft; 45. Foot rest; 46. Universal joint;

5. Leg exercise driving assembly; 51, first gear; 52, second gear; 53, first rack; 531, tooth; 532, groove; 533, spring; 534, hemispherical massage head; 54, second rack; 55, fourth rotating shaft; 56, fifth rotating shaft; 57, third gear; 58, fourth gear; 59, driving pulley; 510, driven pulley; 511, belt; 512, first motor; 513, third bearing;

6. Drive switching assembly; 61. Support; 62. Lead screw; 63. Lead screw nut; 64. Slide rail; 65. Sliding block; 66. Second bearing; 67. Second motor.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

Please refer to Figures 1-6, a leg exercise device for rehabilitation of orthopedic patients, which includes:

The chair 1 comprises a seat plate 11, a chair back 12 rotatably connected to the seat plate 11 via a first rotating shaft 14, and a box body 13 arranged at the lower end of the seat plate 11. The rear sides of the seat plate 11 and the chair back 12 are provided with an angle adjustment component 2 for adjusting the angles of the two. The angle adjustment component 2 can adjust the angle of the chair back 12 and the seat plate 11 to make the patient more comfortable during exercise, and can also allow the patient to exercise in different postures, such as sitting, half-lying, lying upright, prone, etc.;

The moving component 3 is fixed at the lower end of the box 13 and is easy to move, so that the patient can exercise anytime and anywhere, reducing the workload of family members or medical staff and increasing the durability of the patient's exercise;

The leg exercise assembly 4 comprises a left leg bracket 41 and a right leg bracket 42, which are rotatably arranged at the front end of the seat plate 11 through a second rotating shaft 43 and a third rotating shaft 44 respectively, and are located between the left and right side walls of the box body 13. A connecting seat is welded to the upper end of the front side wall of the box body 13, and the opposite ends of the second rotating shaft 43 and the third rotating shaft 44 can be rotatably connected to the connecting seat through a first bearing 16, and the other ends of the two are connected to the left and right side walls of the box body 13 through the first bearing 16;

The leg exercise driving assembly 5 is arranged inside the box 13, and comprises a first gear 51 and a second gear 52 respectively arranged on the second rotating shaft 43 and the third rotating shaft 44 near one end of the outer wall of the box 13, the first gear 51 and the second gear 52 are respectively meshed with a first rack 53 and a second rack 54, and the opposite ends of the first rack 53 and the second rack 54 are provided with teeth 531; the front inner wall of the box 13 is connected with a third gear 57 and a fourth gear 58 through a fourth rotating shaft 55 and a fifth rotating shaft 56, respectively, and the third gear 57 and the fourth gear 58 are respectively meshed with the teeth 531 on the first rack 53 and the second rack 54; the outer side of the fourth gear 58 is provided with a driving pulley 59, and the outer side of the third gear 57 is provided with a driven pulley 510, and the driving pulley 59 and the driven pulley 510 are connected by a belt 511; the side of the driving pulley 59 away from the front wall of the box 13 is connected with a first motor 512;

The lower ends of the first rack 53 and the second rack 54 are respectively provided with a drive switching component 6 for switching between active exercise and passive exercise; the drive switching component 6 can make the first rack 53 and the second rack 54 disengage from the first gear 51 and the second gear 52 respectively, so that the motor drive is changed to patient-independent exercise, realizing the switching between active exercise and passive exercise, and meeting the needs of patients in different rehabilitation stages.

The first rack 53 and the second rack 54 can drive the first gear 51 and the second gear 52 to rotate 0°-90° respectively.

In this embodiment, the first motor 512 drives the driving pulley 59 to rotate forward and reverse alternately. When rotating forward, the driving pulley 59 drives the driven pulley 510 to rotate clockwise through the belt 511. The driving pulley 59 and the driven pulley 510 respectively drive the fourth gear 58 and the third gear 57 to rotate clockwise through the fifth rotating shaft 56 and the fourth rotating shaft 55. The third gear 57 drives the first rack 53 to move upward by meshing with the teeth 531. The teeth on the front side of the first rack 53 mesh with the first gear 51. When the first rack 53 moves upward, the first gear 5 1 rotates counterclockwise, thereby transmitting force to the left leg bracket 41 through the second rotating shaft 43, causing the left leg bracket 41 to rotate downward along the second rotating shaft 43; at the same time, the fourth gear 58 drives the second rack 54 to move downward, and when the second rack 54 moves downward, the second gear 52 rotates clockwise (opposite to the rotation direction of the first gear 51), thereby transmitting force to the right leg bracket 42 through the third rotating shaft 44, causing the right leg bracket 42 to rotate upward along the third rotating shaft 44. Therefore, the patient's two calves can do alternating knee flexion and leg extension exercises at the same time, which is in line with human behavior habits, has high comfort, and better exercise effect. When the first motor 512 drives the active pulley 59 to reverse, the principle is the same as when it rotates forward, and it will not be repeated. It should be noted that when the patient needs passive prone exercise, first, the chair back 12 is placed flat through the angle control component 2, and then

When the left leg support 41 or the right leg support 42 returns to its vertical position, the first motor 512 is turned off, and the drive switching component 6 is used to change the active exercise into a passive exercise. Then the vertical left leg support 41 or the right leg support 42 is rotated and laid flat, and then the active exercise is changed into a passive exercise, so that the patient can perform single-leg exercise in a prone position.

Preferably, the drive switching assembly 6 includes a lead screw 62 provided at the lower end of the box body 13 through a support 61, a lead screw nut 63 slidably provided on the lead screw 62, a slide rail 64 vertically provided at the upper end of the lead screw nut 63, and a slider 65 slidably provided on the slide rail 64, and one end of the slider 65 is fixedly connected to the lower ends of the first rack 53 and the second rack 54 respectively;

Both ends of the lead screw 62 are connected between the two supports 61 through second bearings 66 , and one end of the lead screw 62 is connected to a second motor 67 .

In this embodiment, the second motor 67 drives the lead screw 62 to rotate forward or reverse alternately, the lead screw 62 drives the lead screw nut 63 to slide forward and backward along the lead screw 62, the lead screw 62 drives the slide rail 64 to move forward and backward, and the slide rail 64 drives the first rack 53 and the second rack 54 to move forward and backward through the slider 65, thereby achieving the first rack 53 and the second rack 54 being disengaged from the first gear 51 and the second gear 52 respectively, so that the patient can exercise independently, and can exercise while sitting or lying down, or can exercise with both legs alternately or with both legs at the same time, which is flexible and convenient, and has a high utilization rate.

Preferably, the angle control assembly 2 includes support rods 21 provided at both ends of the rear side of the box body 13 and a third rack 22 located in the box body 13 and one end of which is passed through the support rod 21, and a fifth gear 23 is respectively passed through the two ends of the first rotating shaft 14, the fifth gear 23 is meshed with the third rack 22, and the support rod 21 is welded to the upper end of the rear side wall of the box body 13;

The other end of the third rack 22 is provided with an arc-shaped bayonet 24 with internal teeth, and the rear ends of the first rack 53 and the second rack 54 are provided with an extension rod 25. The end of the extension rod 25 is provided with an arc-shaped boss 26 matching the arc-shaped bayonet 24, and the outer wall of the arc-shaped boss 26 is provided with external teeth that mesh with the internal teeth of the arc-shaped bayonet 24. Transparent observation windows 131 are provided on the left and right side walls of the box body 13 to facilitate observation and adjustment of the positions of the arc-shaped bayonet 24 and the arc-shaped boss 26.

In this embodiment, when the angle of the chair back 12 needs to be adjusted, the position of the arc-shaped bayonet 24 and the arc-shaped convex column 26 can be viewed through the observation window 131, and the front-back position of the first rack 53 and the second rack 54 can be adjusted by the second motor 67, and then the up-down position of the first rack 53 and the second rack 54 can be adjusted by the first motor 512. When the arc-shaped convex column 26 at the end of the first rack 53 or the second rack 54 is just located at the upper end of the arc-shaped bayonet 24, the first motor 512 is turned on to move the first rack 53 or the second rack 54 downward. When the two are engaged, the first motor 512 can be turned off, and then the second motor 67 is turned on to move the first rack 53 or the second rack 54 forward or backward, thereby driving the third rack 22 to move forward and backward, prompting the fifth gear 23 to drive the chair back 12 to rotate. After the angle is adjusted appropriately, the corresponding second motor 67 is turned off. When the arc-shaped bayonet 24 and the arc-shaped convex column 26 are disengaged, the operation method is opposite and will not be repeated.

Preferably, a cavity 211 is provided inside the support rod 21, and a leather cup 221 is provided at the end of the third rack 22. The leather cup 221 can slide back and forth along the cavity 211 driven by the third rack 22.

An elastic support member 27 is disposed on the upper surface of one end of the support rod 21 away from the box body 13, and the other end of the elastic support member 27 is fixedly connected to the rear side of the chair back 12;

The elastic support member 27 is a retractable airbag, and the retractable airbag is in close communication with the cavity 211 .

In this embodiment, when the third rack 22 moves forward and backward driven by the first rack 53 or the second rack 54, the leather cup 221 slides back and forth along the cavity 211, and a one-way valve is provided on the side wall of the support rod 21 to allow air to enter, thereby realizing the back and forth pumping of air and continuously inflating the retractable airbag. When a person is sitting, the elastic support member 27 has the most air, which can play a role in buffering the back pressure. When a person is lying down, the air holes on the side wall of the elastic support member 27 can be opened to discharge the internal gas.

Preferably, an inflatable lumbar pad 121 is provided on the side of the chair back 12 that contacts the human body. The inflatable lumbar pad 121 is communicated with the interior of the retractable airbag. When a person sits down, the gas in the elastic support member 27 partially flows into the inflatable lumbar pad 121, which can relieve the pressure on the waist and play a role in supporting the waist.

Preferably, it further comprises armrests 15 arranged on both sides of the seat plate 11, the armrests 15 are provided with square through holes 151 passing through from top to bottom, and the upper ends of the square through holes 151 are covered with elastic fabric 152;

A through hole corresponding to the square through hole 151 is formed at the upper end of the box body 13 , and both the first rack 53 and the second rack 54 can pass through the square through hole 151 and move up and down or forward and backward.

In this embodiment, the first rack 53 and the second rack 54 continuously move up and down, and placing hands on them can have a massage effect to increase blood circulation; when the first rack 53 and the second rack 54 move forward and backward, the arms can be placed on the armrests 15 to relax and massage the patient's muscles.

Preferably, the upper ends of the first rack 53 and the second rack 54 are both provided with a groove 532, the bottom of the groove 532 is connected to a spring 533, the upper end of the spring 533 is provided with a hemispherical massage head 534, the spring 533 plays a shock-absorbing role, and the hemispherical massage head 534 makes the patient feel more comfortable.

Preferably, foot supports 45 are respectively provided at the ends of the left leg support 41 and the right leg support 42, and straps 411 are provided on one side of the left leg support 41 and the right leg support 42, and Japanese-shaped buckles 412 are provided on the left leg support 41 and the right leg support 42 at the opposite ends of the straps 411, and the straps 411 can pass through the Japanese-shaped buckles 412 for self-adhesion.

Preferably, the footrest 45 is connected to the left leg bracket 41 and the right leg bracket 42 respectively through a universal joint 46. When the patient does leg exercises, he can also do ankle exercises at the same time; when the patient is exercising in a prone position (i.e. lying on his stomach), the footrest 45 can be turned down 160-180 degrees to make the patient's feet hang down naturally, which is ergonomic and makes the exercise more comfortable.

Preferably, the mobile component 3 includes a base 31, universal wheels 32 arranged at four feet at the bottom of the base 31, and a hydraulic telescopic rod 33 arranged between the base 31 and the box 13; the universal wheels 32 facilitate the movement of the entire device, so that patients can receive rehabilitation training anytime and anywhere, increasing durability.

A foot control panel 34 is provided on one side of the hydraulic telescopic rod 33, and the height of the hydraulic telescopic rod 33 can be adjusted by the foot control panel 34, thereby ensuring that the height of the entire device meets the needs of different patients. Correspondingly, the left leg bracket 41 and the right leg bracket 42 can also be made telescopic, which is convenient for adjustment according to the length of the patient's legs, thereby improving the utilization rate of the entire device.

The present invention is further described above in conjunction with the embodiments, but the present invention is not limited to the above-mentioned implementation modes, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims (7)

1. A leg exercise device for rehabilitation of an orthopedic patient, comprising:

The seat (1) comprises a seat board (11), a seat back (12) rotatably connected with the seat board (11) through a first rotating shaft (14) and a box body (13) arranged at the lower end of the seat board (11), wherein the rear sides of the seat board (11) and the seat back (12) are provided with an angle regulating and controlling assembly (2) for regulating the angles of the seat board and the seat back;

the moving assembly (3) is fixedly arranged at the lower end of the box body (13);

A leg exercise assembly (4) comprising a left leg bracket (41) and a right leg bracket (42), which are respectively arranged at the front end of the seat plate (11) in a rotating way through a second rotating shaft (43) and a third rotating shaft (44) and are positioned between the left side wall and the right side wall of the box body (13);

The leg exercise driving assembly (5) is arranged inside the box body (13) and comprises a first gear (51) and a second gear (52) which are respectively penetrated through the second rotating shaft (43) and the third rotating shaft (44) and are close to one end of the outer wall of the box body (13), the first gear (51) and the second gear (52) are respectively connected with a first rack (53) and a second rack (54) in a meshed mode, and teeth (531) are respectively arranged at opposite ends of the first rack (53) and the second rack (54); a third gear (57) and a fourth gear (58) are respectively connected to the front inner side wall of the box body (13) through a fourth rotating shaft (55) and a fifth rotating shaft (56), and the third gear (57) and the fourth gear (58) are respectively meshed with teeth (531) on the first rack (53) and the second rack (54); a driving belt pulley (59) is arranged on the outer side of the fourth gear (58), a driven belt pulley (510) is arranged on the outer side of the third gear (57), and the driving belt pulley (59) and the driven belt pulley (510) are in transmission connection through a belt (511); a first motor (512) is connected to one side of the driving belt pulley (59) far away from the front wall of the box body (13);

The lower ends of the first rack (53) and the second rack (54) are respectively provided with a driving switching component (6) for switching between active exercise and passive exercise;

the first rack (53) and the second rack (54) can drive the first gear (51) and the second gear (52) to rotate by 0-90 degrees respectively;

the driving switching assembly (6) comprises a screw rod (62) arranged at the lower end of the box body (13) through a support (61), a screw rod nut (63) arranged on the screw rod (62) in a sliding mode, a sliding rail (64) vertically arranged at the upper end of the screw rod nut (63) and a sliding block (65) arranged on the sliding rail (64) in a sliding mode, and one end of the sliding block (65) is fixedly connected with the lower ends of the first rack (53) and the second rack (54) respectively;

Two ends of the screw rod (62) are respectively connected between the two supports (61) through second bearings (66), and one end of the screw rod (62) is connected with a second motor (67);

The angle regulating and controlling assembly (2) comprises supporting rods (21) arranged at two ends of the rear side of the box body (13) and a third rack (22) which is arranged in the box body (13) and one end of which is penetrated into the supporting rods (21), wherein two ends of the first rotating shaft (14) are respectively penetrated with a fifth gear (23), and the fifth gears (23) are meshed with the third rack (22);

The other end of the third rack (22) is provided with an arc bayonet (24) with internal teeth, the rear ends of the first rack (53) and the second rack (54) are provided with an extension rod (25), the end part of the extension rod (25) is provided with an arc convex column (26) matched with the arc bayonet (24), and the outer wall of the arc convex column (26) is provided with external teeth meshed with the internal teeth of the arc bayonet (24);

A cavity (211) is formed in the support rod (21), a leather cup (221) is arranged at the end part of the third rack (22), and the leather cup (221) can slide back and forth along the cavity (211) under the drive of the third rack (22);

An elastic supporting piece (27) is arranged on the upper surface of one end, far away from the box body (13), of the supporting rod (21), and the other end of the elastic supporting piece (27) is fixedly connected to the rear side of the chair back (12);

the elastic support (27) is a telescopic air bag which is communicated with the cavity (211) in a sealing way.

2. The leg exercise device for rehabilitation of orthopedic patients according to claim 1, characterized in that an inflatable waist pad (121) is provided on a side of the chair back (12) contacting the human body, and the inflatable waist pad (121) is communicated with the inside of the stretchable airbag.

3. The orthopedic patient rehabilitation leg exercise device of claim 1, wherein:

The seat plate is characterized by further comprising armrests (15) arranged on two sides of the seat plate (11), square through holes (151) penetrating up and down are formed in the armrests (15), and elastic cloth (152) is covered at the upper ends of the square through holes (151);

The upper end of the box body (13) is provided with a through hole corresponding to the square through hole (151), and the first rack (53) and the second rack (54) can pass through the square through hole (151) to move up and down or back and forth.

4. A leg exercise device for rehabilitation of orthopedic patients according to claim 3, characterized in that the upper ends of the first rack (53) and the second rack (54) are provided with grooves (532), the bottoms of the grooves (532) are connected with springs (533), and the upper ends of the springs (533) are provided with hemispherical massage heads (534).

5. The leg exercise device for rehabilitation of orthopedic patients according to claim 1, characterized in that the ends of the left leg bracket (41) and the right leg bracket (42) are respectively provided with a foot rest (45), one side of the left leg bracket (41) and one side of the right leg bracket (42) are respectively provided with a binding band (411), the left leg bracket (41) and the right leg bracket (42) at the opposite ends of the binding band (411) are provided with a Chinese character 'ri' shaped buckle (412), and the binding band (411) can pass through the Chinese character 'ri' shaped buckle (412) to be self-adhered.

6. The leg exercise device for rehabilitation of orthopedic patients according to claim 5, characterized in that the foot rest (45) is connected with the left leg bracket (41) and the right leg bracket (42) by means of universal joints (46), respectively.

7. The orthopedic patient rehabilitation leg exercise device of claim 1, wherein:

the moving assembly (3) comprises a base (31), universal wheels (32) arranged on four feet at the bottom of the base (31) and a hydraulic telescopic rod (33) arranged between the base (31) and the box body (13);

One side of the hydraulic telescopic rod (33) is provided with a pedal control plate (34).