Leg training device for postoperative rehabilitation recuperation

Abstract

The invention discloses a leg training device for postoperative rehabilitation recuperation, and relates to the technical field of leg rehabilitation training devices, the leg training device comprises a training chair, a thigh lateral movement training mechanism, a thigh bearing stress mechanism and a shank bearing binding mechanism, the training chair comprises a seat plate, and a plate groove is formed in the front side of the seat plate; the thigh lateral movement training mechanism comprises thigh training swing rods, two vertical rotating shafts are rotationally connected to the left side and the right side in a plate groove, the tops of the two rotating shafts are movably connected with the rear ends of the two thigh training swing rods respectively, and the thigh training swing rods are connected with the corresponding rotating shafts through a training mode switching mechanism. The bottoms of the two rotating shafts respectively extend to the lower side of the seat plate and are connected with a double-leg balance elastic resistance assembly; according to the leg training device for postoperative rehabilitation recuperation, the thighs are movably trained in the horizontal direction in a sitting posture mode, so that muscles on the inner sides and the outer sides of the thighs are exercised, the two thighs need the same confrontation force during training, and the training force balance of the two thighs can be maintained.

Description

Technical Field

[0001] This invention relates to the field of leg rehabilitation training equipment technology, specifically a leg training equipment for postoperative rehabilitation and recuperation. Background Technology

[0002] Some patients have a long recovery period after leg surgery, so their postoperative rehabilitation needs to be carried out in a sanatorium. The sanatorium uses physical therapy combined with exercise training to help patients gradually recover after surgery. Existing rehabilitation centers typically train leg strength through leg kicking or simulated walking, but they lack exercises for the inner and outer thigh muscles, which can easily lead to atrophy of these muscles in patients. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a leg training device for postoperative rehabilitation. The device allows the thighs to move and train in a horizontal direction in a seated position, thereby exercising the inner and outer thigh muscles, preventing atrophy of the inner and outer thigh muscles in the rehabilitation patient, and ensuring that the opposing force of both thighs is the same during training, thus maintaining the balance of training force of both thighs and effectively solving the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a leg training device for postoperative rehabilitation, comprising a training chair, the training chair including a seat board and a groove, wherein the groove is formed on the front side of the seat board, and further comprising: The thigh lateral movement training mechanism includes a rotating shaft, a thigh training swing arm, and a double-leg balanced elastic resistance assembly. Two vertical rotating shafts are rotatably connected to the left and right sides of the plate groove. The tops of the two rotating shafts are movably connected to the rear ends of the two thigh training swing arms, and the thigh training swing arms are connected to the corresponding rotating shafts through a training mode switching mechanism. The bottoms of the two rotating shafts extend to the lower side of the seat plate and are connected to the double-leg balanced elastic resistance assembly. The thigh support force-bearing mechanism is installed at the front end of the thigh training swing bar, and the calf support restraint mechanism is installed at the front end of the thigh support force-bearing mechanism.

[0005] The slot is used to install the pivot and thigh training swing arm in the thigh lateral movement training mechanism. The patient sits on the seat board and places both thighs on the two thigh support and force-bearing mechanisms. The patient's lower legs are bound to the corresponding lower leg support and restraint mechanisms. The training mode switching mechanism opens the front ends of the two thigh training swing arms to the sides. Then the patient brings the two thighs together for training. At this time, the two thighs bring the two thigh training swing arms together through the two thigh support and force-bearing mechanisms. At this time, the double leg balanced elastic resistance component provides resistance for the two thighs to come together. At this time, the inner thigh muscles are mainly exercised. Due to the use of the double leg balanced elastic resistance component, the resistance that needs to be resisted when the two thighs come together is the same, which helps to maintain the balance of training intensity of the two thighs. When the training mode switching mechanism brings the two thigh training swing bars together, the patient opens the front of the two thighs. At this time, the main exercise is performed on the outer thigh muscles. The resistance that needs to be resisted when the two thighs are opened is still the same, thus enabling the training of the inner and outer thigh muscles of the patient.

[0006] Furthermore, the dual-leg balanced elastic resistance assembly includes gears, racks, a front crossbar, a rear crossbar, a telescopic rod, and a training force spring. The bottom of the two rotating shafts is fixedly connected to the middle of the two gears, respectively. The bottom of the seat plate is longitudinally slidably mounted on the right side of each gear. The racks mesh with the corresponding gears. The rear end of the left rack is fixedly connected to the left end of the front crossbar, and the rear end of the right rack is fixedly connected to the front end of the exercise intensity adjustment mechanism. The rear end of the exercise intensity adjustment mechanism is fixedly connected to the right end of the rear crossbar. The front side of the rear crossbar is connected to the rear side of the front crossbar through a longitudinal telescopic rod. A training force spring is sleeved on the telescopic rod, and the two ends of the training force spring are connected to the front crossbar and the rear crossbar, respectively.

[0007] When the training mode switching mechanism opens the front ends of the two thigh training swing arms to the sides, and the user brings their thighs together to primarily exercise the inner thigh muscles, the left thigh training swing arm, through the training mode switching mechanism, drives the left axle and gear to rotate clockwise. The gear, through meshing, drives the left rack and front crossbar to move backward. The right thigh training swing arm, through the training mode switching mechanism, drives the right axle and gear to rotate counterclockwise. The gear, through meshing, drives the right rack, exercise intensity adjustment mechanism, and rear crossbar to move forward. At this time, the training spring is compressed, and the telescopic rod shortens. The inner thigh muscles are exercised by resisting the compression force of the training spring. If the exercise intensity adjustment mechanism is used beforehand to bring the rear crossbar closer to the right rack, the training spring can be pre-compressed, requiring greater force to resist the compression force of the training spring, thus increasing the exercise intensity.

[0008] When the training mode switching mechanism brings the two thigh training swing bars together, and the user spreads their legs to primarily exercise the outer thigh muscles, the left thigh training swing bar, through the training mode switching mechanism, drives the left axle and gear to rotate counterclockwise. The gear, through meshing, drives the left rack and front crossbar forward. Conversely, the right thigh training swing bar, through the training mode switching mechanism, drives the right axle and gear to rotate clockwise. The gear, through meshing, drives the right rack, the intensity adjustment mechanism, and the rear crossbar backward. At this time, the training spring is stretched, and the extension bar extends. The exercise of the outer thigh muscles is achieved by resisting the stretching force of the training spring. If the intensity adjustment mechanism moves the rear crossbar away from the right rack, the training spring can be pre-stretched, requiring greater force to resist its stretching force, thus increasing the exercise intensity.

[0009] Furthermore, the exercise intensity adjustment mechanism includes a hollow longitudinal bar, an adjusting sleeve, and a longitudinal movement control assembly. The rear end of the rack on the right side is fixedly connected to the front end of the hollow longitudinal bar. The rear end of the hollow longitudinal bar is slidably sleeved with the inner side of the front end of the adjusting sleeve. The adjusting sleeve is connected to the hollow longitudinal bar through the longitudinal movement control assembly, and the rear end of the adjusting sleeve is fixedly connected to the right end of the rear crossbar. The longitudinal movement control assembly is used to control the length of the hollow longitudinal bar extending from the adjusting sleeve, thereby changing the length of the telescopic control rod formed by the hollow longitudinal bar and the adjusting sleeve, which changes the distance between the rear crossbar and the rack on the right side. Depending on different training modes (two modes for exercising the inner thigh muscles and the outer thigh muscles), the exercise intensity or training strength can be adjusted.

[0010] Furthermore, the training mode switching mechanism includes an adjustment disk, blocks, pin holes, cavities, adjusting pins, and elastic control components. The rotating shaft is fixedly connected to the middle of the adjustment disk at the bottom of the plate groove. Two blocks are provided on the upper front end of the adjustment disk, and two pin holes are opened on the upper side of the adjustment disk between the two blocks. Each thigh training swing arm has a cavity on its inner side. The front end of the cavity extends to the front end face of the thigh training swing arm to facilitate the installation of the elastic control components in the cavity. The rear end of the cavity is connected to the top of the adjusting pin through the elastic control components. The bottom end of the adjusting pin passes through the pin hole at the bottom of the thigh training swing arm and extends into the corresponding pin hole.

[0011] When the training mode switching mechanism opens the front ends of the two thigh training swing arms to the sides, and the patient brings their thighs together to primarily exercise the inner thigh muscles, they hold the front ends of the two racks and keep them still. The elastic control component allows the bottom end of the adjusting pin to retract into the pin hole, and the front ends of the two thigh training swing arms are then opened to the left and right sides respectively. When the thigh training swing arms touch the stop block away from the center of the seat plate, the elastic control component is released. The elastic force of the elastic control component causes the bottom end of the adjusting pin to extend into the pin hole away from the center of the seat plate, locking the thigh training swing arms and the adjusting plate. The thigh training swing arms can no longer rotate relative to the pivot. When the thigh training swing arms swing, they can smoothly drive the pivot and the corresponding gear to rotate. When the training mode switching mechanism brings the two thigh training swing arms together, and the user spreads their thighs to primarily exercise the outer thigh muscles, they hold the front ends of the two racks and keep them stationary. The elastic control component then retracts the bottom of the adjusting pin from its hole into the pin hole, bringing the two thigh training swing arms closer together in a longitudinally distributed position. When the thigh training swing arms abut against the stop near the center of the seat, the elastic control component is released. The elastic force of the component causes the bottom of the adjusting pin to extend into the pin hole near the center of the seat, locking the thigh training swing arms and the adjusting plate. The thigh training swing arms can no longer rotate relative to the pivot, thus completing the switch from the inner thigh muscle exercise mode to the outer thigh muscle exercise mode.

[0012] Furthermore, the elastic control component includes guide posts, a control plate, a compression spring, a button, and a button slot. Two vertical guide posts are fixedly connected within the cavity, and these guide posts are slidably connected to two holes on the control plate. A compression spring is sleeved on the upper section of each guide post on the control plate. A button slot is provided at the bottom of the thigh training swing arm, and a button is installed at the bottom of the control plate corresponding to the button slot. The top of an adjusting pin is fixedly connected to the bottom of the control plate. The bottom of the button extends from the button slot. The elastic force of the compression spring pushes the control plate downwards along the guide posts, allowing the adjusting pin to move downwards and insert into the corresponding pin hole. When switching training modes, the control plate is pushed upwards by the button, causing it to overcome the elastic force of the compression spring and move upwards along the guide posts, allowing the bottom of the adjusting pin to leave the pin hole. This achieves control over the up-and-down movement of the adjusting pin.

[0013] Furthermore, the thigh support force-bearing mechanism includes a receiving sleeve, a thigh force-bearing U-shaped seat, and a pressure position locking component. The front end of each thigh training swing arm is detachably installed with the rear end of the receiving sleeve. The thigh force-bearing U-shaped seat is longitudinally slidably installed on the top of the receiving sleeve. The thigh force-bearing U-shaped seat is connected to the receiving sleeve through the pressure position locking component. During training, the thigh is placed inside the thigh-supporting U-shaped seat. The thigh-supporting U-shaped seat can move back and forth along the receiving sleeve, thereby adjusting the support position for the thigh. This helps the trainee find a comfortable position for exerting force. Whether the thigh is training with its head together or open, the thigh-supporting U-shaped seat and receiving sleeve apply a swinging force to the thigh training swing bar. When the thigh is placed inside the thigh-supporting U-shaped seat, due to the weight of the thigh, the pressure position locking component locks the thigh-supporting U-shaped seat and receiving sleeve. At this time, the thigh-supporting U-shaped seat can no longer move freely back and forth relative to the receiving sleeve, avoiding interference with training. If discomfort is felt during training and the position of the thigh-supporting U-shaped seat needs to be adjusted, the leg is lifted to unlock the thigh-supporting U-shaped seat and receiving sleeve. After moving the position of the thigh-supporting U-shaped seat, the leg is lowered again, and the pressure position locking component locks the thigh-supporting U-shaped seat and receiving sleeve again. Changing the support position of the thigh is convenient and quick.

[0014] Furthermore, the pressure position locking assembly includes a locking plate, a breathable pad, a locking post, a second compression spring, and a locking groove. The upper side of the receiving sleeve has locking grooves at equal intervals. The locking plate is vertically slidably connected inside the thigh-receiving U-shaped seat. A breathable pad is installed on the upper side of the locking plate. The bottom of the locking plate is fixedly connected to the top of the locking post. The bottom of the locking post is slidably connected to the vertical hole at the bottom of the thigh-receiving U-shaped seat. A second compression spring is sleeved on the top of the locking post. The breathable pad makes direct contact with the bottom of the thigh, improving comfort. The thigh presses down on the locking plate through the breathable pad, and the locking plate moves down within the thigh-supporting U-shaped seat. At this time, the second compression spring is compressed, and the bottom end of the locking pin extends into the corresponding locking groove, completing the locking of the relative positions of the thigh-supporting U-shaped seat and the receiving sleeve. If the thigh is lifted, the second compression spring rebounds, which can push the locking plate up within the thigh-supporting U-shaped seat. The locking pin moves up with the locking plate and leaves the locking groove, allowing the thigh-supporting U-shaped seat to readjust its position relative to the receiving sleeve.

[0015] Furthermore, the calf support and restraint mechanism includes a thigh extension adjustment rod, a wing bolt, a calf support hollow rod, a calf extension adjustment block, a footrest assembly, a calf restraint assembly, and a calf length adaptation and adjustment assembly. The front end of the receiving sleeve is fitted inside the rear end of the thigh extension adjustment rod. The front end of the receiving sleeve is threaded with a wing bolt, which abuts against the bottom of the thigh extension adjustment rod. The front end of the thigh extension adjustment rod is movably connected to the top of the calf support hollow rod. The bottom of the calf support hollow rod is connected to the top of the calf extension adjustment block via the calf length adaptation and adjustment assembly. The bottom front of the calf extension adjustment block is connected to a footrest assembly. Calf restraint assemblies are installed on both sides of the calf support hollow rod. Loosening the wing bolt allows the thigh extension adjustment rod to move along the receiving sleeve, aligning the end of the thigh extension adjustment rod away from the receiving sleeve with the knee socket, suitable for people with different thigh lengths. Then tighten the wing bolt to relock the thigh extension adjustment rod and the receiving sleeve. The calf length adaptation adjustment component is used to change the distance between the calf extension adjustment block and the calf support hollow rod, allowing the user's foot to be placed smoothly on the footrest component, thus accommodating people with different calf lengths. The calf restraint component tightens the calf and the calf support hollow rod. When exercising the thigh, the calf swings together with the thigh, the receiving sleeve, and the thigh training swing bar, which avoids stress on the knee and helps protect the knee.

[0016] Furthermore, it also includes a calf-raising training mechanism, which comprises a lower tension spring connecting plate, a tension spring, and an upper tension spring connecting plate. The lower tension spring connecting plate is fixedly connected to the rear side of the hollow rod supporting the calf. The lower tension spring connecting plate has evenly spaced hanging holes. The bottom of the receiving sleeve is fixedly connected to the upper tension spring connecting plate, which has evenly spaced hanging holes at its bottom. One end of the tension spring is connected to the upper hanging hole, and the other end of the tension spring is connected to the corresponding lower hanging hole. Generally, there are three upper and three lower hanging holes. If leg-raising training is required, the training mode switching mechanism brings the two thigh training swing arms together, installs an appropriate number of tension springs, and when the calf is raised, the calf restraint assembly drives the calf supporting the hollow rod to rise, overcoming the tension of the tension springs to complete the calf-raising training, thereby exercising the corresponding muscle groups. The training intensity can be adjusted by changing the number of tension springs between the lower and upper tension spring connecting plates, or by changing the tension springs with different elasticities.

[0017] Furthermore, it also includes a back-of-the-knee support assembly, which comprises a slot, a locking block, and a back-of-the-knee rubber pad. The front end of the thigh extension adjustment rod has a slot, and the bottom of the back-of-the-knee rubber pad is connected to a locking block, which engages with the corresponding slot. Direct contact between the back of the knee and the connection point between the thigh extension adjustment rod and the hollow calf support rod can easily cause discomfort. Therefore, the back-of-the-knee rubber pad is installed here using the slot and locking block. The back-of-the-knee rubber pad supports the back of the knee, improving comfort during exercise and preventing the connection point between the thigh extension adjustment rod and the hollow calf support rod from squeezing the skin of the back of the knee during calf exercises.

[0018] Compared with existing technologies, the beneficial effects of this postoperative rehabilitation leg training device are: 1. This postoperative rehabilitation leg trainer involves the patient sitting on a seat with their thighs resting on two thigh support mechanisms. The patient's lower legs are secured to corresponding lower leg support mechanisms. A training mode switching mechanism opens the front ends of the thigh training swing arms to the sides. The patient then brings their thighs together for training. The thigh support mechanisms bring the thigh training swing arms together, and the balanced elastic resistance components provide resistance to this movement. This primarily exercises the inner thigh muscles. Because of the balanced elastic resistance components, the resistance required when the thighs are together is the same, helping to maintain a balanced training intensity for both thighs.

[0019] 2. This leg training device for postoperative rehabilitation uses a U-shaped support seat. When the thigh is placed inside the U-shaped support seat, the weight of the thigh locks the support seat and the receiving sleeve through the pressure position locking component. At this time, the U-shaped support seat can no longer move freely back and forth relative to the receiving sleeve, thus avoiding interference with training. If discomfort is felt during training and the position of the U-shaped support seat needs to be adjusted, the leg is lifted to unlock the support seat and the receiving sleeve. After moving the position of the U-shaped support seat, the leg is lowered again, and the pressure position locking component locks the support seat and the receiving sleeve again. Changing the support position of the thigh is convenient and quick.

[0020] 3. This postoperative rehabilitation leg trainer allows the thighs to move horizontally in a seated position, thereby exercising the inner and outer thigh muscles, preventing atrophy of the inner and outer thigh muscles in the rehabilitated individuals. Furthermore, the resistance force required for both thighs during training is the same, which can maintain the balance of training intensity for both thighs and ensure that the rehabilitated individuals maintain a good walking posture after recovery. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the leg training device for postoperative rehabilitation and recuperation according to the present invention; Figure 2 This is a schematic diagram of the leg training device for postoperative rehabilitation and recuperation of the present invention from the front view. Figure 3 This is a schematic diagram of the leg training device for postoperative rehabilitation and recuperation according to the present invention, viewed from below. Figure 4 For the present invention Figure 3 A magnified view of the structure at point A in the middle; Figure 5 This is a side view of the leg training device for postoperative rehabilitation and recuperation according to the present invention. Figure 6 This is a schematic diagram of a partial structure of the leg training device for postoperative rehabilitation and recuperation according to the present invention. Figure 1 ; Figure 7 For the present invention Figure 6 Side view structural diagram; Figure 8 This is a schematic diagram of a partial structure of the leg training device for postoperative rehabilitation and recuperation according to the present invention. Figure 2 ; Figure 9 This is a cross-sectional schematic diagram of the exercise intensity adjustment mechanism in the leg training device for postoperative rehabilitation of the present invention; Figure 10 This is a partial structural diagram of the training mode switching mechanism in the leg trainer for postoperative rehabilitation of the present invention; Figure 11 This is a cross-sectional schematic diagram of the training mode switching mechanism in the leg trainer for postoperative rehabilitation of the present invention; Figure 12 This is a cross-sectional schematic diagram of the thigh support and force-bearing mechanism in the leg training device for postoperative rehabilitation of the present invention; In the diagram: 1. Training chair, 11. Seat, 12. Seat groove, 13. Legs, 14. Leg rest, 15. Anti-wear ball bearings, 16. Upright, 17. Armrests, 18. Grip bars, 19. Armrest pads, 110. Backrest, 111. Hollowed-out groove, 112. Center stop block, 2. Thigh lateral movement training mechanism, 21. Spindle, 22. Gear, 23. Dovetail guide bar, 24. Rack and pinion, 25. Front crossbar, 26. Rear crossbar, 27. Telescopic bar, 28. Training force spring, 29. Thigh training... 3. Swing arm, 3. Exercise intensity adjustment mechanism, 31. Hollow longitudinal bar, 32. Adjusting sleeve, 33. Knob 1, 34. Lead screw nut 1, 35. Lead screw 1, 36. Scale, 4. Training mode switching mechanism, 41. Adjustment plate, 42. Stop block, 43. Pin hole, 44. Cavity, 45. Guide post, 46. Control plate, 47. Compression spring 1, 48. Adjusting pin, 49. Button, 410. Button slot, 5. Thigh support force-bearing mechanism, 51. Removal bolt, 52. Receiver Sleeve, 53 Guide bar, 54 Guide groove, 55 Thigh bearing U-shaped seat, 56 Locking pressure plate, 57 Breathable pad, 58 Locking post, 59 Compression spring II, 510 Locking groove, 511 Protrusion, 512 Vertical groove, 6 Lower leg support and restraint mechanism, 61 Thigh extension adjustment rod, 62 Wing bolt, 63 Movable groove, 64 Movable shaft, 65 Lower leg support hollow rod, 66 Lower leg extension adjustment block, 67 Slide bar, 68 Slide groove, 69 Thread 610 Two levers, 611 Two lead screw nuts, 612 Foot support plate, 613 Limiting flange, 614 Lower leg splint, 615 Groove, 616 Lower leg restraint belt, 617 Male Velcro side, 618 Female Velcro side, 619 Ankle splint, 7 Lower leg lifting training mechanism, 71 Tension spring connecting lower plate, 72 Tension spring, 73 Tension spring connecting upper plate, 8 Knee socket support assembly, 81 Slot, 82 Clip, 83 Knee socket rubber pad. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1, please refer to Figures 1 to 12 This embodiment provides a technical solution: a leg training device for postoperative rehabilitation, including a training chair 1, which includes a seat 11 and a groove 12, with the groove 12 provided on the front side of the seat 11.

[0024] The training chair 1 also includes legs 13, leg seats 14, anti-wear ball bearings 15, uprights 16, armrests 17, grip bars 18, armrest pads 19, backrest 110, perforated grooves 111, and a central stop block 112. The bottom corners of the seat plate 11 are fixedly connected to the tops of the four legs 13, and the bottom of the four legs 13 are respectively equipped with leg seats 14. The leg seats 14 are used to increase the contact area with the ground, and can also be fixed in the required position through the mounting holes on the leg seats 14 with mounting bolts. The backrest 110 is installed on the upper rear end of the seat plate 11. The backrest 110 has perforated grooves 111 evenly distributed on it, so that the back can be supported by the backrest 111 during exercise. On the seat 10, the hollow groove 111 is used for ventilation of the back. Two armrests 17 are installed on the upper left and right sides of the seat 11 through vertical columns 16. Two columns 16 are set on the lower side of each armrest 17. Armrest pads 19 are installed on the armrests 17. A grip bar 18 is fixedly connected to the front top of the armrest 17. The trainee can put his arms on the armrest pad 19 and hold the grip bar 18. It is convenient to fix the body by holding the grip bar 18 during training so that the legs can exert more force. Anti-wear ball bearings 15 are installed in a rectangular array on the upper front of the seat 11. A middle stop block 112 is fixedly connected to the front middle of the plate groove 12 by screws.

[0025] It is also equipped with a thigh lateral movement training mechanism 2, a training mode switching mechanism 4, a thigh support force mechanism 5, and a calf support restraint mechanism 6.

[0026] The thigh lateral movement training mechanism 2 includes a rotating shaft 21, a thigh training swing arm 29, and a double leg balanced elastic resistance component. Two vertical rotating shafts 21 are rotatably connected to the left and right sides of the plate groove 12, respectively. The top of the two rotating shafts 21 are movably connected to the rear ends of the two thigh training swing arms 29, and the thigh training swing arms 29 are connected to the corresponding rotating shafts 21 through the training mode switching mechanism 4. The bottom of the two rotating shafts 21 extends to the lower side of the seat plate 11 and is connected to the double leg balanced elastic resistance component. The thigh support force-bearing mechanism 5 is installed at the front end of the thigh training swing bar 29, and the calf support restraint mechanism 6 is installed at the front end of the thigh support force-bearing mechanism 5.

[0027] The thigh support mechanism 5 includes a disassembly bolt 51, a receiving sleeve 52, a thigh force-bearing U-shaped seat 55, and a pressure position locking assembly. The front end of each thigh training swing arm 29 is detachably mounted with the rear end of the receiving sleeve 52. Specifically, the rear end of the receiving sleeve 52 is sleeved on the outside of the front end of the thigh training swing arm 29. The two sides of the rear end of the receiving sleeve 52 are fixedly connected to the thigh training swing arm 29 by two disassembly bolts 51. The thigh force-bearing U-shaped seat 55 is longitudinally slidably mounted on the top of the receiving sleeve 52. The thigh force-bearing U-shaped seat 55 is connected to the receiving sleeve 52 by the pressure position locking assembly.

[0028] The thigh support mechanism 5 also includes guide bars 53 and guide grooves 54. Two guide grooves 54 are respectively opened on both sides of the receiving sleeve 52. Two guide bars 53 are respectively fixedly connected to the bottom sides of the thigh support U-shaped seat 55. The guide bars 53 are slidably connected to the corresponding guide grooves 54. The guide bars 53 and guide grooves 54 cooperate to realize the sliding connection between the receiving sleeve 52 and the thigh support U-shaped seat 55.

[0029] The thigh support mechanism 5 also includes protrusions 511. The top two sides of the thigh support U-shaped seat 55 are evenly arrayed with protrusions 511. The protrusions 511 can be made of rubber. During training, the sides of the thigh can be pressed to achieve a certain massage effect.

[0030] During training, the thigh is placed inside the thigh-supporting U-shaped seat 55. The thigh-supporting U-shaped seat 55 can move back and forth along the receiving sleeve 52, thereby adjusting the support position for the thigh and helping the trainee find a comfortable force application position. Whether the thigh is training with its head together or open, the thigh-supporting U-shaped seat 55 and the receiving sleeve 52 apply a swinging force to the thigh training swing bar 29. When the thigh is placed inside the thigh-supporting U-shaped seat 55, due to the weight of the thigh, the thigh-supporting U-shaped seat 55 and the receiving sleeve 52 are locked by the pressure position locking component. When the thigh support U-shaped seat 55 is in use, it can no longer move freely back and forth relative to the receiving sleeve 52. This is to prevent the thigh support U-shaped seat 55 from interfering with training. If you feel uncomfortable during training and need to adjust the position of the thigh support U-shaped seat 55, lift your leg to unlock the thigh support U-shaped seat 55 and the receiving sleeve 52. After moving the position of the thigh support U-shaped seat 55, put your leg down again. The pressure position locking component will lock the thigh support U-shaped seat 55 and the receiving sleeve 52 again. Changing the thigh support position is convenient and quick.

[0031] The pressure position locking assembly includes a locking plate 56, a breathable pad 57, a locking post 58, a compression spring 59, and a locking groove 510. The upper side of the receiving sleeve 52 is provided with locking grooves 510 at equal intervals. The locking plate 56 is vertically slidably connected inside the thigh force U-shaped seat 55. The breathable pad 57 is installed on the upper side of the locking plate 56. The bottom of the locking plate 56 is fixedly connected to the top of the locking post 58. The bottom of the locking post 58 is slidably connected to the vertical hole at the bottom of the thigh force U-shaped seat 55. The top of the locking post 58 is sleeved with a compression spring 59.

[0032] The pressure position locking assembly also includes a vertical groove 512. Vertical grooves 512 are respectively opened on both sides of the thigh force U-shaped seat 55. The side of the locking plate 56 is provided with a sliding protrusion that is vertically slidably connected to the vertical groove 512, so as to realize the sliding installation function of the locking plate 56 on the inside of the thigh force U-shaped seat 55.

[0033] The breathable pad 57 is in direct contact with the bottom of the thigh to improve comfort. The thigh presses down on the locking plate 56 through the breathable pad 57. The locking plate 56 moves down within the thigh support U-shaped seat 55. At this time, the compression spring 59 is compressed, and the bottom end of the locking pin 58 extends into the corresponding locking groove 510, completing the locking of the relative positions of the thigh support U-shaped seat 55 and the receiving sleeve 52. If the thigh is lifted, the compression spring 59 rebounds, which can push the locking plate 56 to move up within the thigh support U-shaped seat 55. The locking pin 58 moves up with the locking plate 56 and leaves the locking groove 510. The thigh support U-shaped seat 55 can then move again relative to the receiving sleeve 52 to adjust the thigh support position.

[0034] In use, the slot 12 is used to install the rotating shaft 21 and the thigh training swing arm 29 in the thigh lateral movement training mechanism 2. The patient sits on the seat board 11 and places his two thighs on the two thigh support force-bearing mechanisms 5. The patient's lower legs are bound to the corresponding lower leg support binding mechanism 6. The training mode switching mechanism 4 opens the front ends of the two thigh training swing arms 29 to the sides. Then, the patient brings their thighs together for training. At this time, the two thighs are brought together by the two thigh support and force-bearing mechanisms 5. The balanced elastic resistance component of the two legs provides resistance to the bringing of the two thighs together. At this time, the inner thigh muscles are mainly exercised. Due to the use of the balanced elastic resistance component of the two legs, the resistance that needs to be resisted when the two thighs are brought together is the same, which helps to maintain the balance of training intensity of the two thighs. When the two thighs are brought together, the two thigh training swing arms 29 respectively contact the left and right sides of the middle stop block 112, preventing one side of the thighs from being brought together too much, which is conducive to balanced training of both thighs.

[0035] When the training mode switching mechanism 4 brings the two thigh training swing bars 29 together, the patient opens the front of the two thighs. At this time, the main exercise is performed on the outer thigh muscles. The resistance that needs to be resisted when the two thighs are opened is still the same, so the inner and outer thigh muscles of the patient can be trained.

[0036] During thigh swing training, the lower part of the thigh root is prone to friction with the upper front end of the seat plate 11. The anti-friction ball 15 can change the friction into rolling contact, reducing the discomfort caused by friction on the lower part of the thigh root.

[0037] The dual-leg balanced elastic resistance assembly includes gears 22, racks 24, a front crossbar 25, a rear crossbar 26, a telescopic rod 27, and a training force spring 28. The bottom of the two rotating shafts 21 are respectively fixedly connected to the middle of the two gears 22. The bottom of the seat plate 11 is longitudinally slidably mounted with racks 24 on the right side of each gear 22. The racks 24 mesh with the corresponding gears 22. The rear end of the left rack 24 is fixedly connected to the left end of the front crossbar 25. The rear end of the right rack 24 is fixedly connected to the front end of the exercise intensity adjustment mechanism 3. The rear end of the exercise intensity adjustment mechanism 3 is fixedly connected to the right end of the rear crossbar 26. The front side of the rear crossbar 26 is connected to the rear side of the front crossbar 25 through the longitudinal telescopic rod 27. The training force spring 28 is sleeved on the telescopic rod 27. The two ends of the training force spring 28 are respectively connected to the front crossbar 25 and the rear crossbar 26.

[0038] The dual-leg balanced elastic resistance assembly also includes a dovetail guide bar 23. Dovetail guide grooves are respectively opened on the right side of the two racks 24. A dovetail guide bar 23 is longitudinally slidably installed in each dovetail guide groove. The dovetail guide bar 23 is fixedly installed at the bottom of the seat plate 11. The dovetail guide bar 23 and the dovetail guide groove cooperate to realize the installation of the racks 24.

[0039] When the training mode switching mechanism 4 opens the front ends of the two thigh training swing arms 29 to the sides, and the patient brings their thighs together to primarily exercise the inner thigh muscles, the left thigh training swing arm 29 drives the left pivot 21 and gear 22 to rotate clockwise through the training mode switching mechanism 4. The gear 22, through meshing, drives the left rack 24 and front crossbar 25 to move backward. The right thigh training swing arm 29 drives the right pivot 21 and gear 22 to rotate counterclockwise through the training mode switching mechanism 4. The gear 22, through meshing, drives the right rack 24, exercise intensity adjustment mechanism 3, and rear crossbar 26 to move forward. At this time, the training force spring 28 is compressed, and the telescopic rod 27 is shortened. The inner thigh muscles are exercised by resisting the compression force of the training force spring 28. If the exercise intensity adjustment mechanism 3 is used to bring the rear crossbar 26 closer to the right rack 24 beforehand, the training force spring 28 can be compressed in advance. Then, a greater force is needed to resist the compression force of the training force spring 28, and the exercise intensity will be increased.

[0040] When the training mode switching mechanism 4 brings the two thigh training swing arms 29 together, and the patient spreads their thighs to primarily exercise the outer thigh muscles, the left thigh training swing arm 29, through the training mode switching mechanism 4, drives the left pivot 21 and gear 22 to rotate counterclockwise. The gear 22, through meshing, drives the left rack 24 and front crossbar 25 forward. Conversely, the right thigh training swing arm 29, through the training mode switching mechanism 4, drives the right pivot 21 and gear 22 to rotate clockwise. The gear 22, through meshing, drives the right rack 24, exercise intensity adjustment mechanism 3, and rear crossbar 26 backward. At this time, the training spring 28 is stretched, and the telescopic rod 27 extends. The exercise of the outer thigh muscles is achieved by resisting the stretching force of the training spring 28. If the exercise intensity adjustment mechanism 3 moves the rear crossbar 26 away from the right rack 24, the training spring 28 can be pre-stretched, requiring greater force to resist its stretching force, thus increasing the exercise intensity.

[0041] The exercise intensity adjustment mechanism 3 includes a hollow vertical rod 31, an adjusting sleeve 32, and a longitudinal movement control component. The rear end of the rack 24 on the right side is fixedly connected to the front end of the hollow vertical rod 31. The rear end of the hollow vertical rod 31 is slidably sleeved with the inner side of the front end of the adjusting sleeve 32. The adjusting sleeve 32 is connected to the hollow vertical rod 31 through the longitudinal movement control component. The rear end of the adjusting sleeve 32 is fixedly connected to the right end of the rear crossbar 26.

[0042] The longitudinal movement control assembly includes a knob 33, a lead screw nut 34, a lead screw 35, and a scale 36. The end of the adjusting sleeve 32 near the rear crossbar 26 is rotatably connected to the lead screw 35 via a bearing. The front end of the lead screw 35 is fixedly connected to the knob 33. The end of the hollow longitudinal rod 31 near the rear crossbar 26 is fitted with the lead screw nut 34, which engages with the lead screw 35. Rotating the knob 33 clockwise activates the engagement between the lead screw nut 34 and the lead screw nut 34. The hollow longitudinal rod 31 is retracted into the adjusting sleeve 32. The screw 35 is rotated counterclockwise by the knob 33. The screw 35 and the screw nut 34 cooperate to allow the hollow longitudinal rod 31 to extend out of the adjusting sleeve 32. In order to control the extension or retraction distance of the hollow longitudinal rod 31, a scale 36 is provided on the side of the hollow longitudinal rod 31 to measure the distance that the hollow longitudinal rod 31 moves relative to the adjusting sleeve 32. The scale 36 is set so as not to interfere with the movement of the hollow longitudinal rod 31 relative to the adjusting sleeve 32.

[0043] The longitudinal adjustment component is used to control the length of the hollow longitudinal bar 31 extending from the adjusting sleeve 32, thereby changing the length of the telescopic control rod formed by the hollow longitudinal bar 31 and the adjusting sleeve 32, which in turn changes the distance between the rear crossbar 26 and the rack 24 on the right side. Depending on the different training modes (two modes for exercising the inner thigh muscles and the outer thigh muscles), the training intensity or training strength can be adjusted.

[0044] The training mode switching mechanism 4 includes an adjustment disk 41, a stop block 42, a pin hole 43, a cavity 44, an adjustment pin 48, and an elastic control component. The rotating shaft 21 is fixedly connected to the middle part of the adjustment disk 41 at the bottom of the plate groove 12. Two stops block 42 are provided on the upper front end of the adjustment disk 41, and two pin holes 43 are opened on the upper side of the adjustment disk 41 between the two stops block 42. A cavity 44 is provided on the inner side of each thigh training swing arm 29. The front end of the cavity 44 extends to the front end face of the thigh training swing arm 29 to facilitate the installation of the elastic control component in the cavity 44. The rear end of the cavity 44 is connected to the top end of the adjustment pin 48 through the elastic control component. The bottom end of the adjustment pin 48 passes through the pin hole at the bottom of the thigh training swing arm 29 and extends into the corresponding pin hole 43.

[0045] The elastic control assembly includes guide posts 45, control plate 46, compression spring 47, button 49, and button slot 410. Two vertical guide posts 45 are fixedly connected inside the cavity 44. The two guide posts 45 are slidably connected to two plate holes on the control plate 46. The section of the guide post 45 located on the upper side of the control plate 46 is fitted with the compression spring 47. The bottom of the thigh training swing arm 29 is provided with a button slot 410. A button 49 is installed at the bottom of the control plate 46 corresponding to the position of the button slot 410. The top of the adjusting pin 48 is fixedly connected to the bottom of the control plate 46. The bottom of button 49 extends from the button slot 410. The elastic force of compression spring 47 pushes control plate 46 down along guide post 45, allowing adjustment pin 48 to be inserted into the corresponding pin hole 43 as control plate 46 moves down. When switching exercise modes, push control plate 46 upward with button 49, allowing control plate 46 to overcome the elastic force of compression spring 47 and move upward along guide post 45, allowing the bottom of adjustment pin 48 to leave pin hole 43, thereby controlling the up and down movement of adjustment pin 48.

[0046] When the training mode switching mechanism 4 opens the front ends of the two thigh training swing arms 29 to the sides, and the patient brings their thighs together to mainly exercise the inner thigh muscles, they hold the front ends of the two racks 24 and keep them still. The elastic control component allows the bottom end of the adjusting pin 48 to retract from the pin hole 43 and into the pin hole. The front ends of the two thigh training swing arms 29 are then opened to the left and right sides respectively. When the thigh training swing arms 29 press against the stop block 42 away from the middle of the seat plate 11, the elastic control component is released. The elastic force of the elastic control component causes the bottom end of the adjusting pin 48 to extend into the pin hole 43 away from the middle of the seat plate 11. The thigh training swing arms 29 and the adjusting plate 41 are locked. The thigh training swing arms 29 can no longer rotate relative to the rotating shaft 21. When the thigh training swing arms 29 swing, they can smoothly drive the rotating shaft 21 and the corresponding gear 22 to rotate. When the training mode switching mechanism 4 brings the two thigh training swing arms 29 together, and the patient spreads their thighs to primarily exercise the outer thigh muscles, they hold the front ends of the two racks 24 and keep them still. The elastic control component allows the bottom end of the adjusting pin 48 to retract from the pin hole 43 and into the pin hole, bringing the two thigh training swing arms 29 together in a longitudinally distributed state. When the thigh training swing arms 29 abut against the stop block 42 near the middle of the seat plate 11, the elastic control component is released. The elastic force of the elastic control component causes the bottom end of the adjusting pin 48 to extend into the pin hole 43 near the middle of the seat plate 11, locking the thigh training swing arms 29 and the adjusting plate 41. The thigh training swing arms 29 can no longer rotate relative to the rotating shaft 21, thus completing the switch from the inner thigh muscle exercise mode to the outer thigh muscle exercise mode.

[0047] Example 2, please refer to Figures 1 to 12 This embodiment provides a technical solution: a leg training device for postoperative rehabilitation. This embodiment is a further explanation of the structure of Embodiment 1. The calf support and restraint mechanism 6 includes a thigh extension adjustment rod 61, a wing bolt 62, a calf support hollow rod 65, a calf extension adjustment block 66, a footrest assembly, a calf restraint assembly, and a calf length adaptation adjustment assembly. The front end of the receiving sleeve 52 is fitted inside the rear end of the thigh extension adjustment rod 61. The front end of the receiving sleeve 52 is threaded with a wing bolt 62, which abuts against the bottom of the thigh extension adjustment rod 61. The front end of the thigh extension adjustment rod 61 is movably connected to the top of the calf support hollow rod 65. The bottom of the calf support hollow rod 65 is connected to the top of the calf extension adjustment block 66 through the calf length adaptation adjustment assembly. The bottom front of the calf extension adjustment block 66 is connected to the footrest assembly. Calf restraint assemblies are installed on both sides of the calf support hollow rod 65.

[0048] The calf support and restraint mechanism 6 also includes a movable groove 63 and a movable shaft 64. The front end of the thigh extension adjustment rod 61 is provided with a movable groove 63, and the top of the calf support hollow rod 65 is movably installed in the movable groove 63 through the movable shaft 64.

[0049] The lower leg length adjustment assembly includes a slider 67, a groove 68, a second lead screw 69, a second knob 610, and a second lead screw nut 611. Two grooves 68 are respectively provided on both sides of the hollow lower leg support rod 65. The bottom ends of two sliders 67 are fixedly connected to the top sides of the lower leg extension adjustment block 66. The two sliders 67 are vertically slidably connected to their corresponding grooves 68. A second lead screw nut 611 is embedded in the bottom of the hollow lower leg support rod 65. The second lead screw nut 611 is connected to the second lead screw 69. The middle part of the lower leg extension adjustment block 66 is rotatably connected to the bearing. The bottom end of the second lead screw 69 is fixedly connected to the second knob 610. Rotating the second lead screw 69 clockwise by the second knob 610 causes the second lead screw 69 and the second lead screw nut 611 to move the lower leg extension adjustment block 66 upward along the slide groove 68, which is suitable for people with short lower legs. Rotating the second lead screw 69 counterclockwise by the second knob 610 causes the second lead screw 69 and the second lead screw nut 611 to move the lower leg extension adjustment block 66 downward along the slide groove 68, which is suitable for people with long lower legs.

[0050] The calf restraint assembly includes a calf splint 614, a groove 615, a calf restraint strap 616, a male Velcro face 617, and a female Velcro face 618. Two calf splints 614 are fixedly connected to the front ends of the hollow calf support rod 65, respectively. The two calf splints 614 are arranged opposite each other. Three calf restraint straps 616 are vertically and equidistantly connected on one of the calf splints 614. The front side of the calf restraint strap 616 is connected to the female Velcro face 618, and the end of the calf restraint strap 616 is connected to the male Velcro face 617. The other calf splint 614 has three vertically and equidistantly opened grooves 615. When the calf is placed between the two calf splints 614, the calf restraint strap 616 is passed through the corresponding groove 615, and then the male Velcro face 617 on the calf restraint strap 616 is glued to the female Velcro face 618 on itself, so that the calf can be firmly restrained on the front side of the hollow calf support rod 65.

[0051] The calf support and restraint mechanism 6 also includes an ankle splint 619. Two ankle splints 619 are respectively provided at the front ends of the calf extension adjustment block 66. One of the ankle splints 619 is connected to the calf restraint band 616. The calf restraint band 616 is also provided with a male hook and loop fastener 617 and a female hook and loop fastener 618. The other ankle splint 619 has a groove 615. The calf restraint band 616 passes through the corresponding groove 615. The ankle is restrained and fixed by the adhesion of the male hook and loop fastener 617 and the female hook and loop fastener 618 on the calf restraint band 616. The method of restraining and fixing the ankle is the same as that of restraining and fixing the calf.

[0052] The footrest assembly includes a footrest plate 612 and a limiting flange 613. The bottom front side of the calf extension adjustment block 66 is fixedly connected to the rear end of the footrest plate 612. The upper edge of the footrest plate 612 is provided with a limiting flange 613. After the calf is bound and fixed, the user's foot rests on the footrest plate 612, which improves the user's comfort and avoids discomfort caused by the foot dangling in the air.

[0053] Loosening the wing bolt 62 allows the thigh extension adjustment rod 61 to move along the receiving sleeve 52, so that the end of the thigh extension adjustment rod 61 away from the receiving sleeve 52 corresponds to the knee socket at the knee joint, suitable for people with different thigh lengths. Then tighten the wing bolt 62 to relock the thigh extension adjustment rod 61 and the receiving sleeve 52. The calf length adaptation adjustment component is used to change the distance between the calf extension adjustment block 66 and the calf support hollow rod 65, so that the patient's foot can be placed smoothly on the footrest component, thus adapting to people with different calf lengths. The calf binding component tightens the calf and the calf support hollow rod 65. When exercising the thigh, the calf swings together with the thigh, the receiving sleeve 52, and the thigh training swing bar 29, which can avoid stress on the knee and help protect the knee.

[0054] Example 3, please refer to Figures 1 to 12 This embodiment provides a technical solution: a leg training device for postoperative rehabilitation. This embodiment is structurally similar to Embodiment 2, with the difference being: It also includes a calf-raising training mechanism 7 and a knee-back support assembly 8. The calf-raising training mechanism 7 includes a lower tension spring connecting plate 71, a tension spring 72, and an upper tension spring connecting plate 73. The lower tension spring connecting plate 71 is fixedly connected to the rear side of the hollow calf support rod 65. The lower tension spring connecting plate 71 has hanging holes at equal intervals. The upper tension spring connecting plate 73 is fixedly connected to the bottom of the receiving sleeve 52. The upper tension spring connecting plate 73 has hanging holes at equal intervals at the bottom. The hanging holes connect to one end of the tension spring 72, and the other end of the tension spring 72 connects to the corresponding hanging holes. Generally, there are three hanging holes. If leg-raising training is required, the training mode switching mechanism 4 is used to bring the two thigh training swing bars 29 together and install an appropriate number of tension springs 72. When the lower leg is raised, the lower leg is lifted by the lower leg restraint component, which supports the hollow bar 65 and overcomes the tension of the tension springs 72 to complete the lower leg raising training, thereby exercising the corresponding muscle groups. The training intensity can be adjusted by changing the number of tension springs 72 between the lower tension spring connecting plate 71 and the upper tension spring connecting plate 73. The training intensity can also be changed by changing the tension springs 72 with different elasticity.

[0055] The back of the knee support assembly 8 includes a slot 81, a locking block 82, and a back of the knee rubber pad 83. The slot 81 is located at the top front end of the thigh extension adjustment rod 61, and the locking block 82 is connected to the bottom of the back of the knee rubber pad 83. The locking block 82 engages with the corresponding slot 81. The locking block 82 and the back of the knee rubber pad 83 can be made of the same material and connected in one piece. Direct contact between the back of the knee and the connection point between the thigh extension adjustment rod 61 and the hollow calf support rod 65 can easily cause discomfort. Therefore, the back of the knee rubber pad 83 is installed here using the slot 81 and the locking block 82. The back of the knee rubber pad 83 supports the back of the knee, improving comfort during exercise and preventing the connection point between the thigh extension adjustment rod 61 and the hollow calf support rod 65 from squeezing the skin of the back of the knee during calf exercises.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leg training device for postoperative rehabilitation, comprising a training chair (1), the training chair (1) including a seat board (11) and a groove (12), wherein the groove (12) is provided on the front side of the seat board (11), characterized in that, Also includes: The thigh lateral movement training mechanism (2) includes a rotating shaft (21), a thigh training swing arm (29) and a double leg balanced elastic resistance assembly. Two vertical rotating shafts (21) are rotatably connected to the left and right sides of the plate groove (12). The tops of the two rotating shafts (21) are movably connected to the rear ends of the two thigh training swing arms (29). The thigh training swing arms (29) are connected to the corresponding rotating shafts (21) through the training mode switching mechanism (4). The bottoms of the two rotating shafts (21) extend to the lower side of the seat plate (11) and are connected to the double leg balanced elastic resistance assembly. The thigh support force-bearing mechanism (5) is installed at the front end of the thigh training swing bar (29), and the front end of the thigh support force-bearing mechanism (5) is equipped with a calf support restraint mechanism (6).

2. The leg training device for postoperative rehabilitation and recuperation according to claim 1, characterized in that: The dual-leg balanced elastic resistance assembly includes gears (22), racks (24), a front crossbar (25), a rear crossbar (26), a telescopic rod (27), and a training force spring (28). The bottoms of the two rotating shafts (21) are respectively fixedly connected to the middle of the two gears (22). The bottom of the seat plate (11) is longitudinally slidably mounted with racks (24) at the right side of each gear (22). The racks (24) mesh with the corresponding gears (22). The rack (24) on the left side... The rear end is fixedly connected to the left end of the front crossbar (25), and the rear end of the rack (24) on the right side is fixedly connected to the front end of the exercise intensity adjustment mechanism (3). The rear end of the exercise intensity adjustment mechanism (3) is fixedly connected to the right end of the rear crossbar (26). The front side of the rear crossbar (26) is connected to the rear side of the front crossbar (25) through a longitudinal telescopic rod (27). A training force spring (28) is sleeved on the telescopic rod (27). The two ends of the training force spring (28) are connected to the front crossbar (25) and the rear crossbar (26) respectively.

3. The leg training device for postoperative rehabilitation and recuperation according to claim 2, characterized in that: The exercise intensity adjustment mechanism (3) includes a hollow vertical rod (31), an adjusting sleeve (32), and a longitudinal movement control component. The rear end of the rack (24) on the right side is fixedly connected to the front end of the hollow vertical rod (31). The rear end of the hollow vertical rod (31) is slidably sleeved with the inner side of the front end of the adjusting sleeve (32). The adjusting sleeve (32) is connected to the hollow vertical rod (31) through the longitudinal movement control component. The rear end of the adjusting sleeve (32) is fixedly connected to the right end of the rear crossbar (26).

4. The leg training device for postoperative rehabilitation and recuperation according to claim 1, characterized in that: The training mode switching mechanism (4) includes an adjustment plate (41), a stop block (42), a cavity (44), an adjustment pin (48), and an elastic control component. The rotating shaft (21) is fixedly connected to the middle part of the adjustment plate (41) at the bottom of the plate groove (12). Two stops (42) are provided on the upper front end of the adjustment plate (41), and two pin holes (43) are opened on the upper side of the adjustment plate (41) between the two stops (42). A cavity (44) is provided on the inner side of each thigh training swing arm (29). The rear end of the cavity (44) is connected to the top end of the adjustment pin (48) through the elastic control component. The bottom end of the adjustment pin (48) passes through the pin hole at the bottom of the thigh training swing arm (29) and extends into the corresponding pin hole (43).

5. The leg training device for postoperative rehabilitation and recuperation according to claim 4, characterized in that: The elastic control assembly includes guide posts (45), control plate (46), compression spring (47), and button (49). Two vertical guide posts (45) are fixedly connected in the cavity (44). The two guide posts (45) are slidably connected to two plate holes on the control plate (46). The section of the guide post (45) located on the upper side of the control plate (46) is fitted with compression spring (47). The bottom of the thigh training swing arm (29) is provided with a button through slot (410). A button (49) is installed at the bottom of the control plate (46) corresponding to the position of the button through slot (410). The top of the adjusting pin (48) is fixedly connected to the bottom of the control plate (46).

6. The leg training device for postoperative rehabilitation and recuperation according to claim 1, characterized in that: The thigh support force-bearing mechanism (5) includes a receiving sleeve (52), a thigh force-bearing U-shaped seat (55), and a pressure position locking component. The front end of each thigh training swing bar (29) is detachably installed with the rear end of the receiving sleeve (52). The thigh force-bearing U-shaped seat (55) is longitudinally slidably installed on the top of the receiving sleeve (52). The thigh force-bearing U-shaped seat (55) is connected to the receiving sleeve (52) through the pressure position locking component.

7. The leg training device for postoperative rehabilitation and recuperation according to claim 6, characterized in that: The pressure position locking assembly includes a locking plate (56), a breathable pad (57), a locking post (58), a second compression spring (59), and a locking groove (510). The upper side of the receiving sleeve (52) is provided with locking grooves (510) at equal intervals. The locking plate (56) is vertically slidably connected inside the thigh force U-shaped seat (55). The breathable pad (57) is installed on the upper side of the locking plate (56). The bottom of the locking plate (56) is fixedly connected to the top of the locking post (58). The bottom of the locking post (58) is slidably connected to the vertical hole at the bottom of the thigh force U-shaped seat (55). The top of the locking post (58) is sleeved with a second compression spring (59).

8. The leg training device for postoperative rehabilitation and recuperation according to claim 6, characterized in that: The calf support and restraint mechanism (6) includes a thigh extension adjustment rod (61), a wing bolt (62), a calf support hollow rod (65), a calf extension adjustment block (66), a footrest assembly, a calf restraint assembly, and a calf length adaptation adjustment assembly. The front end of the receiving sleeve (52) is fitted inside the rear end of the thigh extension adjustment rod (61). The front end of the receiving sleeve (52) is threaded with a wing bolt (62), which abuts against the bottom of the thigh extension adjustment rod (61). The front end of the thigh extension adjustment rod (61) is movably connected to the top of the calf support hollow rod (65). The bottom of the calf support hollow rod (65) is connected to the top of the calf extension adjustment block (66) through the calf length adaptation adjustment assembly. The bottom front of the calf extension adjustment block (66) is connected with a footrest assembly. Calf restraint assemblies are installed on both sides of the calf support hollow rod (65).

9. The leg training device for postoperative rehabilitation and recuperation according to claim 8, characterized in that: It also includes a calf lifting training mechanism (7), which includes a lower tension spring connecting plate (71), a tension spring (72) and an upper tension spring connecting plate (73). The lower tension spring connecting plate (71) is fixedly connected to the rear side of the hollow rod (65) supporting the calf. The lower tension spring connecting plate (71) has hanging holes at equal intervals. The bottom of the receiving sleeve (52) is fixedly connected to the upper tension spring connecting plate (73). The bottom of the upper tension spring connecting plate (73) has hanging holes at equal intervals. The hanging holes are connected to one end of the tension spring (72), and the other end of the tension spring (72) is connected to the corresponding hanging hole.

10. The leg training device for postoperative rehabilitation and recuperation according to claim 8, characterized in that: It also includes a knee socket support assembly (8), which includes a knee socket rubber pad (83), a slot (81) is provided at the top of the front end of the thigh extension adjustment rod (61), and a locking block (82) is connected to the bottom of the knee socket rubber pad (83), and the locking block (82) engages with the corresponding slot (81).

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