Pedal rehabilitation device for rehabilitation on bed

The foldable and portable bed-based knee rehabilitation device with adjustable footrests and a collapsible design addresses the bulkiness and dust issues of existing devices, providing effective and convenient knee rehabilitation.

CN223095778UActive Publication Date: 2025-07-15河北中石油中心医院
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Patent Information

Application Number
CN202420757738.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-12
Publication Date
2025-07-15
Estimated Expiration
2034-04-12

AI Technical Summary

Technical Problem

The existing knee rehabilitation equipment is bulky, inconvenient to move, has a large space and is prone to falling out of dust, which cannot meet the rehabilitation needs of patients with early knee surgery.

Method used

A bed rehabilitation foot rehabilitation device is designed with a foldable structure, including a fixing plate, a drive mechanism and a training mechanism, which realizes the portability and foldability of the device through a universal wheel and a tracheal system, and combines a strap and a pulling system for leg exercises to provide adjustable rehabilitation training.

Benefits of technology

It realizes portable and easy-to-store knee rehabilitation training, reduces the labor intensity of medical staff, improves the patient's rehabilitation effect and the cleanliness of the device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of rehabilitation equipment, and particularly relates to an on-bed rehabilitation pedal rehabilitation device which comprises two groups of fixing plates, first grooves are formed in the tops of the two groups of fixing plates, third grooves of annular structures are formed in the bottoms of the fixing plates, and the first grooves are communicated with the third grooves. A first groove is formed in the bottom of one fixing plate, a second groove is formed in the bottom of the other fixing plate, a driving mechanism is arranged in the second groove, a sliding rail is fixed to the inner wall of the first groove, and two exercise mechanisms symmetrically distributed along the central axis of the sliding rail are slidably connected into the sliding rail in a sleeved mode; the ends, close to each other, of the two exercise mechanisms are connected through a connecting structure. The device can be adjusted according to the length of a leg, is more comfortable to use, can be folded and stored after being used, saves space, is convenient to store, can be prevented from being kept clean, is convenient to move, and reduces the labor intensity of medical staff.
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Description

Technical Field

[0001] The utility model relates to the technical field of rehabilitation equipment, in particular to a rehabilitation foot pedal for bedridden patients. Background Art

[0002] After knee joint surgery, the knee joint needs to be exercised to enable the patient to recover muscle strength as soon as possible, achieve early rehabilitation, and return to work. Within 24 hours after knee joint surgery, the doctor will instruct the patient to perform isometric contractions of the quadriceps femoris and flexion and extension exercises of the hip and knee joints. After 24 hours, the patient will be instructed to increase the intensity of flexion and extension exercises of the hip and knee joints and perform anti-resistance functional training at the same time. The existing technology still mainly uses a motor to push the ankle to passively move the knee joint. Therefore, the equipment is bulky, the existing machinery is heavy, and it is inconvenient to move. At the same time, it occupies a relatively large space when not in use and is prone to gathering dust. Summary of the Utility Model

[0003] A rehabilitation foot pedal for bedridden patients proposed by the utility model solves the problems raised in the above background art.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A rehabilitation foot pedal for bedridden patients includes two groups of fixing plates. First grooves are formed at the tops of the two groups of fixing plates. A third groove with an annular structure is formed at the bottom of one of the fixing plates, and a second groove is formed at the bottom of the other group of fixing plates. A driving mechanism is arranged inside the second groove. Slide rails are fixed to the inner walls of the first grooves, and two groups of exercise mechanisms symmetrically distributed along the central axis thereof are slidably sleeved inside the slide rails. One ends of the two groups of exercise mechanisms close to each other are connected through a connecting structure.

[0006] Preferably, the driving mechanism includes a second support rod slidably connected to the inner wall of the second groove. Two groups of first support rods with a U-shaped structure symmetrically distributed along the central axis thereof are fixed to the bottom of the second support rod. Universal wheels are fixed to both ends of the bottom of the first support rod.

[0007] Preferably, the driving mechanism further includes two first fixing cylinders fixed to the top of the second support rod, and the two first fixing cylinders are symmetrically distributed along the central axis of the fixing plate. A first piston is slidably sleeved inside the first fixing cylinder. A first connecting rod fixedly connected to the top of the first piston and slidably sleeved with the top of the first fixing cylinder is provided. One end of the first connecting rod extending out of the first fixing cylinder is fixedly connected to the top inner wall of the second groove. A first spring fixedly connected to the bottom inner wall of the first fixing cylinder is fixed to the bottom of the first piston. The bottoms of the two first fixing cylinders are fixedly connected to the same first air pipe. The top of the first air pipe is fixedly connected to a second air pipe. The top of the second air pipe is fixedly connected to a second fixing cylinder located inside the first groove and fixedly connected to the fixing plate. A second spring is fixed to the bottom inner wall of the second fixing cylinder. A second piston slidably sleeved inside the second fixing cylinder is fixed to the top of the second spring. A second connecting rod fixedly connected to the top of the second piston and slidably sleeved with the top of the second fixing cylinder is provided.

[0008] Preferably, the exercising mechanism includes two first rotating shafts arrayed along its central axis, and the first rotating shafts are located inside the slide rail. A slider slidably sleeved inside the slide rail is movably sleeved on the outer ring of the first rotating shaft. Third springs fixedly connected to the inner wall of the slide rail are fixed to the mutually remote sides of the two sliders. A third connecting rod is movably sleeved on the outer ring of the first rotating shaft. The other end of the third connecting rod is rotatably connected to a first support plate with an arc-shaped structure. A second support plate with an arc-shaped structure is slidably sleeved on the inner wall of the first support plate.

[0009] Preferably, a first strap is fixed to the outer wall of the first support plate. A pedal is rotatably connected to one end of the first support plate away from the second connecting rod in the same group of fixing plates. A second strap is fixed to the top of the pedal. Meanwhile, a pull rope is fixed to the outer wall of this group of first support plates. The other end of the pull rope is fixed to a pull ring.

[0010] The tops of the mutually close sides of the two fixing plates are hinged by hinges.

[0011] The connecting structure includes a second fixing block fixed to the end of one of the second support plates. A first fixing block is fixed to one end of the other second support plate. The first fixing block is fixedly connected to a fourth rotating shaft. The fourth rotating shaft is movably sleeved with the second fixing block, and graduated disks are rotatably connected to the outer rings of both ends of the fourth rotating shaft.

[0012] A pull rod with an annular structure coaxially arranged with it is arranged inside the third groove. An anti-slip sleeve is fixedly connected to the outer ring of one end of the pull rod. The other end of the pull rod is fixedly connected to a third rotating shaft movably sleeved with the inner wall of the third groove.

[0013] First insertion holes are formed at the mutually remote ends of the two fourth rotating shafts. Second insertion holes are formed at the positions of the fixing plate corresponding to the first insertion holes. The first insertion holes and the second insertion holes are fixed by the same group of insertion rods.

[0014] In the present utility model, the first support plate, the second support plate, the first fixing block, the second fixing block, the fourth rotating shaft, the first binding strap and the foot pedal are used for knee joint rehabilitation exercises. At the same time, the device can be adjusted according to the length of the leg, making it more comfortable to use. After use, the device can be folded and stored, saving space, convenient for storage, avoiding keeping the device clean, and facilitating the movement of the device, reducing the labor intensity of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic structural diagram of a bed rehabilitation foot pedal rehabilitation device proposed by the present utility model.

[0016] Figure 2 FIG. is a top view structural diagram of a bed rehabilitation foot pedal rehabilitation device proposed by the present utility model.

[0017] Figure 3 FIG. is a schematic structural diagram of the second support plate and the second fixing block proposed by the present utility model.

[0018] Figure 4 FIG. is a schematic structural diagram of the second air tube and the second fixing cylinder proposed by the present utility model.

[0019] Figure 5 FIG. is a schematic structural diagram of the first connecting rod and the first fixing cylinder proposed by the present utility model.

[0020] Figure 6 FIG. is a schematic structural diagram of the third groove and the pull rod proposed by the present utility model.

[0021] Reference numerals in the figure: 1, fixing plate; 2, first groove; 3, second groove; 4, driving mechanism; 401, universal wheel; 402, first support rod; 403, first fixing cylinder; 404, second support rod; 405, first air tube; 406, first spring; 407, first connecting rod; 408, first piston; 409, second air tube; 410, second piston; 411, second spring; 412, second fixing cylinder; 413, second connecting rod; 5, slide rail; 6, exercise mechanism; 601, third spring; 602, first rotating shaft; 603, slider; 604, third connecting rod; 605, first support plate; 606, second support plate; 607, pull rope; 608, pull ring; 609, first binding strap; 7, foot pedal; 8, second binding strap; 9, connection structure; 901, first fixing block; 902, second fixing block; 10, scale disk; 11, third groove; 12, pull rod; 13, anti-slip sleeve; 14, third rotating shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0023] Referring to Figure 1-6 , a bed rehabilitation foot rehabilitation device, including two groups of fixing plates 1. First grooves 2 are opened at the tops of the two groups of fixing plates 1. Among them, a third groove 11 with an annular structure is opened at the bottom of one fixing plate 1, and a second groove 3 is opened at the bottom of the other group of fixing plates 1. A driving mechanism 4 is arranged inside the second groove 3. Slide rails 5 are fixed to the inner walls of the first grooves 2. Two sets of exercise mechanisms 6 symmetrically distributed along the central axis thereof are slidably sleeved inside the slide rails 5. One ends of the two sets of exercise mechanisms 6 close to each other are connected through a connection structure 9. When a patient needs to perform rehabilitation exercises, first sit well, then place both feet on the two sets of foot pedals 7 respectively, then fix the feet with the second straps 8, then place the calves on the first support plates 605 connected to the foot pedals 7, and place the thighs on the other first support plates 605 connected to this group of first support plates 605. Then fix the thighs and calves respectively with the first straps 609. When the legs are weak, hold the pull rings 608 with hands and pull the pull rings 608 to make horizontal reciprocating movements. The pull rings 608 drive the pull ropes 607 connected thereto to move. The pull ropes 607 pull the first support plates 605 connected thereto to move. The first support plates 605 move, so that the patient makes a knee-bending movement. At the same time, the first support plates 605 drive the third connecting rods 604 connected thereto to move. The third connecting rods 604 drive the first rotating shafts 601 connected thereto to move. The first rotating shafts 601 drive the sliders 603 connected thereto to move along the slide rails 5, and at the same time pull the third springs 601 connected thereto, giving the patient a pulling resistance, and a better rehabilitation effect can be achieved.

[0024] After the exercise is over, press down on the dial 10. The dial 10 drives the first fixed block 901, the second fixed block 902 and the fourth rotating shaft connected to it to move downward, and at the same time drives the second support plate 606 connected to it to move downward. The second support plate 606 slides along the first support plate 605 connected to it. When the second support plate 606 abuts against the first support plate 605, the included angle between the two groups of second support plates 606 gradually increases, and then drives the first rotating shaft 601 connected to it to move. The first rotating shaft 601 drives the slider 603 connected to it to slide along the slide rail 5, and at the same time squeezes the third spring 605 connected to it and stores it into the interior of the first groove 2. The fourth rotating shaft of the other group has to move with the second connecting rod 413 located below it first. The second connecting rod 413 drives the second piston 410 connected to it to move. The second piston 410 squeezes the second spring 411, and at the same time sends the gas in the second fixed cylinder 412 to the first fixed cylinder 403 through the first air pipe 405 and the second air pipe 409, so that the first fixed cylinder 403 slides along the first connecting rod 407 and stretches the first spring 406, thereby pushing the second support rod 404 connected to it out of the second groove 3, so as to push the universal wheel 401 out of the second groove 3. Then use the plugging rod to fix the fourth rotating shaft to the fixing plate 1, then fold the two fixing plates 1 in half, pull out the pull rod 12 from the third groove 11, and then pull the pull rod 12 to pull the device away, and at the same time fold and store it, avoiding dust on the device due to long-term non-use, saving space, facilitating movement, and reducing the labor intensity of the staff.

[0025] In this embodiment: The driving mechanism 4 includes a second support rod 404 slidably connected to the inner wall of the second groove 3. Two groups of U-shaped first support rods 402 symmetrically distributed along its central axis are fixed at the bottom of the second support rod 404. Universal wheels 401 are fixed at both ends of the bottom of the first support rod 402. The second support rod 404 slides up and down along the inner wall of the second groove 3, thereby driving the first support rod 402 connected to it to move up and down. The first support rod 402 drives the universal wheel 404 connected to it to move up and down. When the device needs to be moved, the universal wheel 404 is pushed out of the third groove 3, and when it is not needed, the universal wheel 404 is stored in the second groove 3.

[0026] In this embodiment: The driving mechanism 4 further includes two first fixing cylinders 403 fixed to the top of the second support rod 404, and the two first fixing cylinders 403 are symmetrically distributed along the central axis of the fixing plate 1. A first piston 408 is slidably sleeved inside the first fixing cylinder 403. A first connecting rod 407 fixedly connected to the top of the first piston 408 is slidably sleeved with the top of the first fixing cylinder 403. One end of the first connecting rod 407 extending out of the first fixing cylinder 403 is fixedly connected to the top inner wall of the second groove 3. A first spring 406 fixedly connected to the bottom inner wall of the first fixing cylinder 403 is fixed to the bottom of the first piston 408. The bottoms of the two first fixing cylinders 403 are fixedly connected to the same first air pipe 405. The top of the first air pipe 405 is fixedly connected to a second air pipe 409. The top of the second air pipe 409 is fixedly connected to a second fixing cylinder 412 which is fixedly connected to the fixing plate 1 and located inside the first groove 2. A second spring 411 is fixed to the bottom inner wall of the second fixing cylinder 412. A second piston 410 slidably sleeved inside the second fixing cylinder 412 is fixed to the top of the second spring 411. A second connecting rod 413 slidably sleeved with the top of the second fixing cylinder 412 is fixed to the top of the second piston 410; the fourth rotating shaft of the other group has to move first with the second connecting rod 413 located below it. The second connecting rod 413 drives the second piston 410 connected to it to move. The second piston 410 squeezes the second spring 411, and at the same time sends the gas in the second fixing cylinder 412 to the first fixing cylinder 403 through the first air pipe 405 and the second air pipe 409, so that the first fixing cylinder 403 slides along the first connecting rod 407 and stretches the first spring 406, thereby pushing the second support rod 404 connected to it out of the second groove 3, and then pushing the universal wheel 401 out of the second groove 3. Then, the fourth rotating shaft is fixed to the fixing plate 1 with a plug rod.

[0027] In this embodiment: The exercise mechanism 6 includes two first rotating shafts 602 arranged in an array along its central axis, and the first rotating shafts 602 are located inside the slide rail 5. The outer ring of the first rotating shaft 602 is movably sleeved with a slider 603 that is slidably sleeved inside the slide rail 5. On each side of the two sliders 603 facing away from each other, a third spring 601 fixed to the inner wall of the slide rail 5 is fixed. The outer ring of the first rotating shaft 602 is movably sleeved with a third connecting rod 604. The other end of the third connecting rod 604 is rotatably connected to a first support plate 605 with an arc-shaped structure. The inner wall of the first support plate 605 is slidably sleeved with a second support plate 606 with an arc-shaped structure; First, sit properly, then place both feet on the two pedal plates 7 respectively, then fix the feet with the second strap 8, then place the calves on the first support plate 605 connected to the pedal plate 7, and place the thighs on the other first support plate 605 connected to this group of first support plates 605. Then fix the thighs and calves respectively with the first strap 609. When the legs are weak, hold the pull ring 608 with the hand and pull the pull ring 608 to make a horizontal reciprocating motion. The pull ring 608 drives the pull rope 607 connected to it to move. The pull rope 607 pulls the first support plate 605 connected to it to move. The first support plate 605 moves, so that the patient makes a knee-bending movement. At the same time, the first support plate 605 drives the third connecting rod 604 connected to it to move. The third connecting rod 604 drives the first rotating shaft 601 connected to it to move. The first rotating shaft 601 drives the slider 603 connected to it to move along the slide rail 5, and at the same time pulls the third spring 601 connected to it, giving the patient a pulling resistance, and a better rehabilitation effect can be achieved.

[0028] In this embodiment: The outer wall of the first support plate 605 is fixed with a first strap 609. One end of a group of first support plates 605 in the same set of fixing plates 1 away from the second connecting rod 413 is rotatably connected to a pedal plate 7. The top of the pedal plate 7 is fixed with a second strap 8. At the same time, the outer wall of this group of first support plates 605 is fixed with a pull rope 607. The other end of the pull rope 607 is fixed with a pull ring 608; The first strap 609 fixes the legs, the second strap 8 fixes the feet, and at the same time, when not in use, rotate the pedal plate 7 and store it inside the first support plate 605.

[0029] In this embodiment: The tops of the two sides of the two fixing plates 1 close to each other are hinged by a hinge; It is convenient to fold the two fixing plates 1 in half, and the storage space can be saved after folding and storing.

[0030] In this embodiment: The connection structure 9 includes a second fixing block 902 fixed to the end of one group of second support plates 606. A first fixing block 901 is fixed to one end of the other group of second support plates 606. The first fixing block 901 is fixedly connected with a fourth rotating shaft. The fourth rotating shaft is movably sleeved with the second fixing block 902, and both outer rings at the two ends of the fourth rotating shaft are rotatably connected with a dial 10. The first fixing block 902 drives the fourth rotating shaft to rotate, and the second fixing block 902 rotates along the fourth rotating shaft, so that the dial can be rotated to check whether the angle required for rehabilitation exercise is reached.

[0031] Inside the third groove 11, there is a pull rod 12 with an annular structure coaxially arranged with it. An anti-slip sleeve 13 is fixedly connected to the outer ring at one end of the pull rod 12, and a third rotating shaft 14 movably sleeved with the inner wall of the third groove 11 is fixedly connected to the other end of the pull rod 12. The device can be moved by pulling the pull rod 12. When not in use, it can be stored, which is convenient, fast and effortless.

[0032] First insertion holes are formed at the mutually remote ends of the two groups of fourth rotating shafts. Second insertion holes are formed at the positions of the fixing plate 1 corresponding to the first insertion holes. The first insertion holes and the second insertion holes are fixed by the same group of insertion rods. After the exercise mechanism is received in the first groove 2, it is fixed to prevent it from popping out.

[0033] Working principle: First, when a patient needs to perform rehabilitation exercise, place the device on the bed, sit well, then place the two feet on the two groups of foot pedals 7 respectively, then fix the feet with the second straps 8, then place the calves on the first support plates 605 connected to the foot pedals 7, and place the thighs on the other group of first support plates 605 connected to this group of first support plates 605. Then fix the thighs and calves respectively with the first straps 609. When the legs are weak, hold the pull ring 608 with the hand and move the pull ring 608 horizontally back and forth. The pull ring 608 drives the pull rope 607 connected to it to move. The pull rope 607 pulls the first support plate 605 connected to it to move. The first support plate 605 moves, so that the patient makes a knee-bending movement. At the same time, the first support plate 605 drives the third connecting rod 604 connected to it to move. The third connecting rod 604 drives the first rotating shaft 601 connected to it to move. The first rotating shaft 601 drives the slider 603 connected to it to move along the slide rail 5, and at the same time pulls the third spring 601 connected to it, giving the patient a pulling resistance, which can achieve a better rehabilitation effect.

[0034] After the exercise is over, press down on the dial 10. The dial 10 drives the first fixed block 901, the second fixed block 902 and the fourth rotating shaft connected to it to move downward, and at the same time drives the second support plate 606 connected to it to move downward. The second support plate 606 slides along the first support plate 605 connected to it. When the second support plate 606 abuts against the first support plate 605, the included angle between the two groups of second support plates 606 gradually increases, and then drives the first rotating shaft 601 connected to it to move. The first rotating shaft 601 drives the slider 603 connected to it to slide along the slide rail 5, and at the same time squeezes the third spring 605 connected to it and houses it inside the first groove 2. The fourth rotating shaft of the other group has to move with the second connecting rod 413 located below it first. The second connecting rod 413 drives the second piston 410 connected to it to move. The second piston 410 squeezes the second spring 411, and at the same time sends the gas in the second fixed cylinder 412 to the first fixed cylinder 403 through the first air pipe 405 and the second air pipe 409, so that the first fixed cylinder 403 slides along the first connecting rod 407 and stretches the first spring 406, thereby pushing the second support rod 404 connected to it out of the second groove 3, so as to push the universal wheel 401 out of the second groove 3. Then use the plug rod to fix the fourth rotating shaft to the fixed plate 1, and then face the two fixed plates 1, pull out the pull rod 12 from the third groove 11, and then pull the pull rod 12 to pull the device away, and at the same time fold and store it, so as to avoid dust on the device for a long time without use, save space, facilitate movement, and reduce the labor intensity of the staff.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0037] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A bed rehabilitation foot rehabilitation device, comprising two groups of fixing plates (1), characterized in that, At the top of each of the two groups of the fixing plates (1), a first groove (2) is formed. Among them, at the bottom of the fixing plate (1), a third groove (11) with an annular structure is formed. At the bottom of the other group of the fixing plates (1), a second groove (3) is formed. A driving mechanism (4) is arranged inside the second groove (3). A slide rail (5) is fixed to the inner wall of the first groove (2). Two exercise mechanisms (6) symmetrically distributed along its central axis are slidably sleeved inside the slide rail (5). One ends of the two exercise mechanisms (6) close to each other are connected through a connecting structure (9).

2. The bed rehabilitation foot rehabilitation device according to claim 1, wherein, The driving mechanism (4) includes a second support rod (404) slidably connected to the inner wall of the second groove (3). At the bottom of the second support rod (404), two first support rods (402) with a U-shaped structure symmetrically distributed along its central axis are fixed. Universal wheels (401) are fixed to both ends at the bottom of the first support rod (402).

3. The bed rehabilitation foot rehabilitation device according to claim 1, characterized in that, The driving mechanism (4) further includes two first fixed cylinders (403) fixed to the top of the second support rod (404). And the two first fixed cylinders (403) are symmetrically distributed along the central axis of the fixing plate (1). A first piston (408) is slidably sleeved inside the first fixed cylinder (403). A first connecting rod (407) slidably sleeved with the top of the first fixed cylinder (403) is fixed to the top of the first piston (408). One end of the first connecting rod (407) extending out of the first fixed cylinder (403) is fixed to the inner wall at the top of the second groove (3). A first spring (406) fixed to the inner wall at the bottom of the first fixed cylinder (403) is fixed to the bottom of the first piston (408). The bottoms of the two first fixed cylinders (403) are fixedly connected to the same first air pipe (405). A second air pipe (409) is fixedly connected to the top of the first air pipe (405). The top of the second air pipe (409) is fixedly connected to a second fixed cylinder (412) fixed to the fixing plate (1) and located inside the first groove (2). A second spring (411) is fixed to the inner wall at the bottom of the second fixed cylinder (412). A second piston (410) slidably sleeved inside the second fixed cylinder (412) is fixed to the top of the second spring (411). A second connecting rod (413) slidably sleeved with the top of the second fixed cylinder (412) is fixed to the top of the second piston (410).

4. A bed rehabilitation foot rehabilitation device according to claim 1, characterized in that, The exercise mechanism (6) includes two first rotating shafts (602) arranged in an array along its central axis. And the first rotating shafts (602) are located inside the slide rail (5). Sliders (603) slidably sleeved inside the slide rail (5) are movably sleeved on the outer circles of the first rotating shafts (602). Third springs (601) fixed to the inner wall of the slide rail (5) are fixed to one sides of the two sliders (603) away from each other. A third connecting rod (604) is movably sleeved on the outer circle of the first rotating shaft (602). The other end of the third connecting rod (604) is rotatably connected to a first support plate (605) with an arc-shaped structure. A second support plate (606) with an arc-shaped structure is slidably sleeved on the inner wall of the first support plate (605).

5. A bed rehabilitation foot rehabilitation device according to claim 4, characterized in that, The outer wall of the first support plate (605) is fixed with a first strap (609). One end of a group of first support plates (605) in the same set of fixing plates (1) that is far away from the second connecting rod (413) is rotatably connected with a foot pedal (7). The top of the foot pedal (7) is fixed with a second strap (8). At the same time, a pull rope (607) is fixed to the outer wall of this group of first support plates (605), and the other end of the pull rope (607) is fixed with a pull ring (608).

6. The foot rehabilitation device for in-bed rehabilitation according to claim 1, wherein, The tops of the two sides of the two fixing plates (1) that are close to each other are hinged by a hinge.

7. The bed rehabilitation foot rehabilitation device according to claim 1, characterized in that, The connecting structure (9) includes a second fixing block (902) fixed to the end of one group of second support plates (606). One end of the other group of second support plates (606) is fixed with a first fixing block (901). The first fixing block (901) is fixedly connected with a fourth rotating shaft. The fourth rotating shaft is movably sleeved with the second fixing block (902), and both outer rings at the two ends of the fourth rotating shaft are rotatably connected with a scale disk (10).

8. A bed rehabilitation foot rehabilitation device according to claim 1, characterized in that, A ring-shaped pull rod (12) coaxial with it is arranged inside the third groove (11). An anti-slip sleeve (13) is fixedly connected to the outer ring of one end of the pull rod (12). The other end of the pull rod (12) is fixedly connected with a third rotating shaft (14) movably sleeved with the inner wall of the third groove (11).

9. The a kind of bed rehabilitation foot rehabilitation device according to claim 7, characterized in that, First insertion holes are formed at the ends of the two fourth rotating shafts that are far away from each other. Second insertion holes are formed at the positions of the fixing plates (1) corresponding to the first insertion holes. The first insertion holes and the second insertion holes are fixed by the same set of insertion rods.