A rehabilitation device for maintaining the physical ability of the elderly

Abstract

The application relates to the technical field of rehabilitation apparatus, in particular to a rehabilitation device for maintaining the limb capacity of the old, which comprises a rehabilitation base, a motor is connected in the rehabilitation base, a sleeve column is connected to the motor through a screw rod and leather wheel combined rod, a tooth rod is fixed on the sleeve column, a worm gear tooth column is rotatably arranged in the rehabilitation base, the worm gear tooth column is fixed with a thigh arm base through a worm wheel, a rehabilitation clamping device is arranged in the thigh arm base, a rear falling protection device is arranged in the rehabilitation base, and the rear falling protection device comprises a connecting rod, a back inclined support plate and a clamping rod. The sleeve column on the screw rod and leather wheel combined rod driven by the motor drives the tooth rod to rotate the worm gear tooth column, the worm gear tooth column drives the thigh arm base to rotate and lift the leg of a user through the worm wheel, the effect of controlling and exercising the limbs of the user is achieved, the exercise burden is reduced, and the effect of safely protecting the old user from falling down due to dizziness is achieved through the back inclined support plate.

Description

Technical Field

[0001] This invention relates to the field of rehabilitation equipment technology, specifically a rehabilitation device for maintaining the limb function of the elderly. Background Technology

[0002] The motor function of the human limbs is one of the most important motor limbs affecting the daily living abilities of the general public, and it is also one of the most vulnerable to injury. Many elderly people experience varying degrees of limb function degeneration or weakening. Furthermore, with the improvement of living standards, the number of people suffering from hemiplegia caused by cardiovascular and cerebrovascular diseases is increasing, causing great mental and physical suffering to patients. For all groups with impaired limb function, long-term rehabilitation devices that help maintain limb function are needed after hemiplegia treatment. Through limb training exercises, the body's limb function can be maintained and the rehabilitation effect can be improved.

[0003] In physical fitness training, there is a special group: the elderly. Unlike younger people, they cannot perform self-training in real time during rehabilitation. For example, many elderly people need to exert their own effort when using exercise machines that simulate walking, similar to those commonly found in parks. This method is difficult and burdensome for elderly people with limited mobility who cannot exercise for extended periods. Furthermore, traditional exercise machines lack safety features, and the elderly are prone to instability, potentially leading to accidental falls due to physical factors, especially backward falls after dizziness, causing their heads to violently impact the ground and seriously affecting their health and lives. Therefore, we propose a rehabilitation device for maintaining the physical capabilities of the elderly. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a rehabilitation device for maintaining the limb abilities of the elderly, solving the problems mentioned in the background section. To achieve the above objectives, this invention is implemented through the following technical solution: A rehabilitation device for maintaining the limb abilities of the elderly includes a rehabilitation base. A motor is fixedly connected inside the rehabilitation base. The output shaft of the motor is connected to a lead screw and pulley assembly. A sleeve is slidably connected to the surface of the lead screw and pulley assembly. A gear is fixedly connected to the end of the sleeve. A worm gear is rotatably connected inside the rehabilitation base. A worm wheel meshes with the surface of the worm gear. The end of the worm wheel is fixedly connected to a thigh arm seat via a shaft. A rehabilitation clamping device is provided inside the thigh arm seat. A fall-over protection device is provided inside the rehabilitation base.

[0005] The rear fall protection device includes a connecting rod, both ends of which are elastically connected to the inside of the rehabilitation base via torsion springs. A back brace plate is fixedly connected to the surface of the connecting rod, and a locking rod is slidably connected to the top of the connecting rod.

[0006] Preferably, the lead screw and pulley assembly includes a transmission wheel, one end of which is fixedly connected to the output shaft of the motor, and the other end of which is rotatably connected to a transmission gear. The end of the transmission gear away from the transmission wheel is fixedly connected to a reciprocating lead screw, and an internal toothed belt is driven to the surface of the transmission wheel.

[0007] Preferably, the surface of the reciprocating lead screw is slidably connected to the interior of the sleeve column, the surface of the reciprocating lead screw is rotatably connected to the interior of the rehabilitation base, and the surface of the internal toothed belt meshes with the surface of the transmission gear.

[0008] Preferably, the surface of the gear bar is slidably connected to the interior of the rehabilitation base, the worm gear column is composed of a worm and a gear, the top end of the worm gear column is rotatably connected to the interior of the rehabilitation base, the interior of the worm wheel is rotatably connected to the interior of the rehabilitation base via a shaft, the surface of the clamping rod is fixedly connected to a clamping strip, and the surface of the clamping rod is elastically connected to the top of the rehabilitation base via a spring, a protective sleeve is fixedly connected between the bottom of the clamping rod and the top of the rehabilitation base, and a clamping groove is provided on the top of the connecting rod.

[0009] Preferably, the rehabilitation clamping device includes a sliding shaft, a calf drive rod, and a leg clamping device. The end of the sliding shaft is fixedly connected to the bottom of the thigh arm seat, and a limiting slide is slidably connected to the surface of the sliding shaft. A shaft is rotatably connected to the bottom of the limiting slide, and the end of the shaft is fixedly connected to the calf arm seat. A protrusion is fixedly connected to the surface of the shaft.

[0010] Preferably, the surface of the limiting slide is slidably connected to the inner wall of the rehabilitation base, the surface of the calf drive rod is elastically connected to the interior of the rehabilitation base by a spring, and a groove is provided at the bottom of the calf drive rod.

[0011] Preferably, the leg clamping device includes a fixed clamping ring, a movable clamping ring, a toothed ring seat, and a pressing and fixing device. The bottom end of the movable clamping ring is elastically connected to the inside of the thigh arm seat through a torsion spring. The top of the movable clamping ring is fixedly connected to a shaft plate. The inside of the toothed ring seat is threadedly connected to a screw, and the end of the screw is fixedly connected to a limit telescopic plate.

[0012] Preferably, the end of the gear ring seat is rotatably connected to the surface of the thigh arm seat, and the end of the limiting telescopic plate is fixedly connected to the interior of the thigh arm seat.

[0013] Preferably, the pressing and fixing device includes a long rod and a locking seat. The surface of the long rod is slidably connected to the interior of the rehabilitation base. A handle is fixedly connected to the top of the long rod. A frame-shaped rack is rotatably connected to the long rod. A connecting block is fixedly connected to the interior of the long rod. A locking block is elastically connected to the interior of the connecting block by a spring.

[0014] Preferably, the surface of the long rod is rotatably connected to the interior of the locking rod, the surface of the frame-shaped rack is slidably connected to the interior of the rehabilitation base, and the surface of the locking base is fixedly connected to the interior of the rehabilitation base.

[0015] As can be seen from the above technical solutions, the rehabilitation device for maintaining the limb function of the elderly provided in the embodiments of this specification has at least the following beneficial effects:

[0016] (1) This invention uses a motor to drive the screw and pulley combination rod to rotate the worm gear column that contacts the gear rod. The worm gear column drives the user's leg on the thigh arm seat to rotate and lift through the worm wheel, thereby achieving the effect of controlling and exercising the user's lower limbs. This makes it easier for elderly users who have difficulty exercising their legs for a long time to exercise easily, thus reducing their exercise burden. The back brace plate on the connecting rod is secured by a clamping rod to ensure its stability after impact, further achieving the effect of safety protection for elderly users who are dizzy and fall. Stable protection avoids the user's head hitting the ground and causing life-threatening danger.

[0017] (2) The present invention sets up a rehabilitation clamping device, which utilizes the interaction between its internal structures to achieve the effect of clamping and fixing the user's legs. At the same time, the calf drive rod drives the protrusion and shaft to rotate through the groove, and the shaft drives the user's calf area to rotate through the calf arm seat. The overall movement state of the thigh arm seat and the calf arm seat simulates the movement state of the thigh lifting and the calf extending forward when the human body walks, which controls and trains the user's thigh and calf, and improves the balance of the lower limb movement of elderly users.

[0018] (3) The present invention uses the pressing motion of the long rod to drive the frame-shaped rack to mesh with the toothed ring seat on the thigh arm seat and the calf arm seat respectively. The toothed ring seat drives the movable clamping ring on the shaft plate to rotate and merge through the screw, so as to achieve the effect of clamping and fixing the thigh and calf of the elderly user respectively. The movable clamping ring is stably positioned according to the self-locking property of the threaded connection, maintaining the stability of the clamping ring, positioning the leg of the elderly user in motion, thereby improving safety and reducing the problem of violent impact caused by the elderly patient falling due to deviation. Attached Figure Description

[0019] The accompanying drawings, which are provided to further illustrate the invention, constitute a part of this application:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the rehabilitation base in this invention;

[0022] Figure 3 This is a schematic diagram of the lead screw and pulley combination rod structure in this invention;

[0023] Figure 4 This is a schematic diagram of the thigh arm seat structure in this invention;

[0024] Figure 5 This is a schematic diagram of the leg clamping device in the present invention;

[0025] Figure 6 This is a schematic diagram of the pressing and fixing device structure in this invention;

[0026] Figure 7 This is a schematic diagram of the connecting rod structure in this invention;

[0027] Figure 8 This is a schematic diagram of the lower leg drive rod structure in this invention.

[0028] In the diagram: 1. Rehabilitation base; 2. Motor; 3. Lead screw and pulley combination rod; 31. Transmission wheel; 32. Transmission gear; 33. Reciprocating lead screw; 34. Internal gear belt; 4. Sleeve column; 5. Gear bar; 6. Worm gear column; 7. Worm wheel; 8. Thigh arm seat; 9. Rehabilitation clamping device; 91. Sliding shaft; 92. Limiting slide; 93. Shaft; 94. Lower leg arm seat; 95. Protrusion; 96. Lower leg drive rod; 97. Leg clamping device ; 971. Fixed clamping ring; 972. Movable clamping ring; 973. Shaft plate; 974. Gear ring seat; 975. Screw; 976. Limiting telescopic plate; 98. Pressing and fixing device; 981. Long rod; 982. Handle; 983. Frame-shaped rack; 984. Connecting block; 985. Locking block; 986. Locking seat; 10. Rear tipping protection device; 101. Connecting rod; 102. Rear back diagonal brace plate; 103. Locking rod; 104. Protective sleeve. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1-8 As shown, the technical solution provided by this invention is as follows:

[0031] A rehabilitation device for maintaining limb function in the elderly includes a rehabilitation base 1. A motor 2 is fixedly connected inside the rehabilitation base 1. The output shaft of the motor 2 is connected to a lead screw and pulley assembly 3. A sleeve 4 is slidably connected to the surface of the lead screw and pulley assembly 3. A gear 5 is fixedly connected to the end of the sleeve 4. A worm gear 6 is rotatably connected inside the rehabilitation base 1. A worm wheel 7 meshes with the surface of the worm gear 6. A thigh arm seat 8 is fixedly connected to the end of the worm wheel 7 via a shaft. A rehabilitation clamping device 9 is installed inside the thigh arm seat 8. A fall-back protection device 10 is installed inside the rehabilitation base 1. The output shaft of the motor 2 drives the lead screw and pulley assembly 3 to rotate. During rotation, the lead screw and pulley assembly 3 drives the slidably connected... Furthermore, the sleeve column 4, which is limited to linear movement, reciprocates. During the movement of the sleeve column 4, the toothed rod 5 drives the worm gear column 6 to rotate. The worm gear column 6 meshes with the worm wheel 7 and drives the thigh arm seat 8 to rotate. The user places his / her leg on the rehabilitation clamping device 9 at the bottom of the thigh arm seat 8. The thigh arm seat 8 drives the user's leg to rotate synchronously through the rehabilitation clamping device 9, so that the user's thigh rotates and lifts, achieving the effect of controlling and exercising the user's lower limbs. While exercising the leg limbs of elderly users, it avoids the user's own excessive force, improves the rehabilitation effect of elderly users, and makes it easy for elderly users who have difficulty exercising their legs for a long time to exercise, reducing the exercise burden.

[0032] The fall protection device 10 includes a connecting rod 101, both ends of which are elastically connected to the inside of the rehabilitation base 1 via torsion springs. In normal operation, the connecting rod 101 is fixed by the spring force, making it easy for elderly users to open and use. Two back support plates 102 are fixedly connected to the surface of the connecting rod 101. These back support plates 102 are used to protect elderly users from falls during exercise. When an elderly user falls backward accidentally, their back is cushioned by the back support plates 102 and positioned within the rehabilitation base 1, preventing them from hitting the ground or coming into contact with it, thus improving the safety of the rehabilitation base 1 during use. Simultaneously, the back support plates 102... A sponge pad is provided to increase the cushioning performance of the support plate, providing a more comfortable protective environment for elderly users. A locking rod 103 is slidably connected to the top of the connecting rod 101. The locking rod 103 is used to lock and fix the connecting rod 101. When the surface of the locking rod 103 locks the connecting rod 101, the connecting rod 101 cannot rotate. At this time, the two back diagonal support plates 102 are fixed. When the elderly user uses the thigh arm seat 8, the locking rod 103 locks the connecting rod 101, so that the two back diagonal support plates 102 are stably protected, ensuring their stability after impact. This further achieves the effect of safety protection for elderly users who are dizzy and fall, and avoids the user's head hitting the ground and causing life-threatening danger.

[0033] In this embodiment, the screw-pulley combination rod 3 includes a transmission wheel 31. Due to the specific needs of the leg training machine for elderly users, both legs require training. Therefore, two screw-pulley combination rods 3 are used, positioned inside the rehabilitation base 1 to control the operation of the two thigh arm seats 8. One end of the transmission wheel 31 is fixedly connected to the output shaft of the motor 2, and the other end is rotatably connected to a transmission gear 32. A reciprocating screw 33 is fixedly connected to the end of the transmission gear 32 away from the transmission wheel 31. An internal toothed belt 34 is connected to the surface of the transmission wheel 31. The internal toothed belt 34 has teeth near the inner wall of the transmission gear 32, with the teeth distributed over a length close to half the belt length. The transmission wheel 31 drives the transmission wheel 31 via the internal toothed belt 34. The motor 2, in turn, drives the internal toothed belt 34 via the two transmission wheels 31. The teeth on the internal toothed belt 34 mesh with the two transmission gears 32, causing them to rotate. When one end of the internal toothed belt 34 engages with one of the transmission gears... When the moving gear 32 engages, its other end teeth lose engagement with another transmission gear 32, thereby achieving the same-direction transmission of the internal gear belt 34, driving the two transmission gears 32 to rotate alternately, thus causing the two thigh arm seats 8 to rotate alternately, achieving the effect of alternating exercise for the elderly user's legs; the surface of the reciprocating screw 33 is slidably connected to the inside of the sleeve 4, and the surface of the reciprocating screw 33 is provided with threads, and the inside of the connecting sleeve 4 is fixedly connected with a convex slider that matches the threads. The convex slider slides on the reciprocating screw 33, which is existing technology. Its main purpose is to cause the limited connecting sleeve 4 to perform linear reciprocating motion when the reciprocating screw 33 rotates, thereby controlling the rack 5 to drive the thigh arm seat 8 in the worm gear 7 on the worm gear 6 to rotate reciprocally, achieving the effect of driving the user's legs to perform reciprocating motion. The surface of the reciprocating screw 33 is rotatably connected to the inside of the rehabilitation base 1, and the surface of the internal gear belt 34 meshes with the surface of the transmission gear 32.

[0034] Furthermore, the surface of the rack 5 is slidably connected to the interior of the rehabilitation base 1. The worm gear 6 is composed of a worm and a gear combination. It meshes with the rack 5 through the top gear and with the worm wheel 7 through the bottom worm. The top of the worm gear 6 is rotatably connected to the interior of the rehabilitation base 1, and the interior of the worm wheel 7 is rotatably connected to the interior of the rehabilitation base 1 through a shaft. When the motor 2 is not operating, the worm gear 6 and the rack 5 are not meshed, thus allowing the user to independently drive the thigh arm seat 8 to move even when the motor 2 is not running. This facilitates the user's independent force exercise and increases the versatility of the rehabilitation base 1. At the same time, the meshing of the worm wheel and worm 7 has a self-locking effect, which allows the worm wheel 7 to drive the thigh arm seat 8 to move during the operation of the motor 2. The self-locking mechanism ensures stable control of the user's legs during exercise. A locking strip is fixedly connected to the surface of the locking rod 103, and the surface of the locking rod 103 is elastically connected to the top of the rehabilitation base 1 via a spring. The locking rod 103 is positioned by elastic force, achieving the effect of fixing it by elastic force when not pressed, without inserting and fixing the connecting rod 101. This further ensures that the back support plate 102 on the connecting rod 101 is adjustable, making it convenient for the user to adjust the back support plate 102 for movement. A protective sleeve 104 is fixedly connected between the bottom of the locking rod 103 and the top of the rehabilitation base 1. The protective sleeve 104 is used to seal and protect the spring at this point. A locking groove is opened at the top of the connecting rod 101.

[0035] Furthermore, the rehabilitation clamping device 9 includes a sliding shaft 91, a calf drive rod 96, and a leg clamping device 97. The end of the sliding shaft 91 is fixedly connected to the bottom of the thigh arm seat 8, and a limiting slide 92 is slidably connected to the surface of the sliding shaft 91. A shaft 93 is rotatably connected to the bottom of the limiting slide 92, and a calf arm seat 94 is fixedly connected to the end of the shaft 93. The rotating thigh arm seat 8 drives the limiting slide 92, which is limited to linear motion, to move upward through the sliding shaft 91 at the bottom, simulating the human leg lifting movement. A protrusion 95 is fixedly connected to the surface of the shaft 93; the limiting slide 92... The surface of the calf drive rod 96 is slidably connected to the inner wall of the rehabilitation base 1. The surface of the calf drive rod 96 is elastically connected to the inside of the rehabilitation base 1 through a spring. The bottom of the calf drive rod 96 has a groove. The calf drive rod 96 drives the protrusion 95 and the shaft 93 to rotate through the groove. The shaft 93 drives the user's calf area to rotate through the calf arm seat 94. The overall movement of the thigh arm seat 8 and the calf arm seat 94 simulates the movement of the thigh lifting and the calf extending forward when the human body walks. This provides control training for both the user's thigh and calf, improving the balance of the lower limb movement of elderly users.

[0036] It is worth noting that the leg clamping device 97 includes a fixed clamping ring 971, a movable clamping ring 972, a gear ring seat 974, and a pressing and fixing device 98. The bottom end of the movable clamping ring 972 is elastically connected to the inside of the thigh arm seat 8 via a torsion spring. The movable clamping ring 972 is fixed by the elastic force, which facilitates its rotation and closure after being subjected to force, achieving the effect of clamping the user's leg. At the same time, it can return to its original position and rotate according to the elastic force after being released from force, making it easy for the user to remove their leg after rotation and opening. The top of the movable clamping ring 972 is fixedly connected to a shaft plate 973. The inside of the gear ring seat 974 is threaded with a screw 975. The gear ring seat 974 is... A threaded seat with teeth on its surface is engaged by a moving frame-shaped rack 983, thereby driving a threaded screw 975, which is linearly limited, to move. A limiting telescopic plate 976 is fixedly connected to the end of the screw 975. The limiting telescopic plate 976 is composed of an inner plate and an outer plate. The inner plate is slidably connected to the inner wall of the outer plate and fixes the end of the screw 975. The outer plate is fixed to the thigh arm seat 8 to limit the movement of the screw 975, allowing it to move only in a straight line. The end of a gear ring seat 974 is rotatably connected to the surface of the thigh arm seat 8, and the end of the limiting telescopic plate 976... The internal structure of the fixed thigh arm seat 8 includes a pressing and fixing device 98 comprising a long rod 981 and a locking seat 986. The surface of the long rod 981 is slidably connected to the internal structure of the rehabilitation base 1. A handle 982 is fixedly connected to the top of the long rod 981, facilitating pressing and rotation by the user. A frame-shaped rack 983 is rotatably connected to the long rod 981. A connecting block 984 is fixedly connected inside the long rod 981. A locking block 985 is elastically connected inside the connecting block 984 via a spring. The elastically connected locking block 985 facilitates movement and displacement during sliding by contacting the locking seat 986, and resets according to the elastic force after displacement, ensuring a smooth reset. The locking block 985 is engaged with the bottom of the locking seat 986, further fixing the position of the long rod 981 and keeping it in position at its lowest point. The screw 975 securely positions the movable clamping ring 972 based on the self-locking property of the threaded connection, maintaining the stability of the clamping ring and positioning the legs of elderly users during exercise, thereby improving safety and reducing the risk of violent impacts caused by falls due to deviation. The surface of the long rod 981 is rotatably connected to the inside of the locking rod 103, the surface of the frame-shaped rack 983 is slidably connected to the inside of the rehabilitation base 1, and the surface of the locking seat 986 is fixedly connected to the inside of the rehabilitation base 1.

[0037] In the use of the rehabilitation device for maintaining the limb function of the elderly according to the present invention, the elderly user manually opens the back support plate 102 to enter the rehabilitation base 1, moves onto it, and places both feet on the foot support plate at the bottom of the calf drive rod 96. The user presses the long rod 981 to drive the frame-shaped rack 983 downward. During the downward movement of the frame-shaped rack 983, its upper teeth respectively mesh with the upper gear ring seat 974 of the thigh arm seat 8 and the calf arm seat 94 to rotate. When the gear ring seat 974 drives the screw 975 to move towards the shaft plate 973, it pushes the shaft plate 973 with its own axis as the center point. Rotation causes the shaft plate 973 to rotate and merge the movable clamping ring 972 towards the fixed clamping ring 971, achieving the effect of clamping and fixing the elderly user's thigh and calf respectively. When the long rod 981 is pressed to its lowest position, the locking block 985 in the connecting block 984 contacts the surface of the locking seat 986. During contact and sliding, the locking block 985 retracts into the connecting block 984 due to the inclined surface at the bottom and the spring force, until the locking block 985 moves to the bottom of the locking seat 986. At this point, the surface of the connecting block 984 no longer contacts it and loses the force that restricts it. The spring force then allows the connecting block to continue sliding. Sliding outwards from 984, the sliding block 985 is restricted by the locking seat 986 and cannot move upwards, thus achieving the effect of limiting and fixing the overall height of the long rod 981. The frame-shaped rack 983 on the long rod 981 at the lowest point does not contact the gear ring seat 974 after engaging it. The screw 975 securely positions the movable clamping ring 972 based on the self-locking property of the threaded connection, maintaining the stability of the clamping ring and positioning the legs of elderly users during exercise, improving their safety. Pressing the long rod 981 simultaneously drives the locking rod 103 downwards, causing the locking strip on the locking rod 103 to be inserted and fixed in place. The rod 101 is fixed inside the slot and in the plugged state. Then, the two back diagonal support plates 102 are fixed to achieve the effect of stabilizing and protecting the back diagonal support plates 102, ensuring its stability after impact, and further achieving the purpose of protecting elderly users from dizziness and falling, avoiding the user's head hitting the ground and causing life-threatening danger. The thigh and calf parts of the elderly user are clamped and fixed at the same time. While ensuring the stability of the user during exercise, it is convenient for the thigh arm seat 8 and calf arm seat 94 to control the user's thigh and calf areas for training respectively.

[0038] Elderly users can choose between self-training and passive training based on their individual needs. If self-training is possible, the user can directly apply force to their legs after clamping the movable clamp 972, causing the thigh arm seat 8 and calf arm seat 94 to move accordingly. During this movement, the user is unaffected by resistance from other structures. If passive training is required, the user controls the motor 2 via a button. The output shaft of the motor 2 drives the internal gear belt 34 through the first transmission wheel 31, which in turn drives the second transmission wheel 31 to rotate. During the same-direction transmission of the internal gear belt 34, the two transmission gears 32 rotate alternately, meaning the two reciprocating lead screws 33 move alternately. When the reciprocating screw 33 rotates, it drives the slidingly connected and linearly limited sleeve 4 to reciprocate. The sleeve 4 drives the thigh arm seat 8 inside the worm gear 7 on the worm gear column 6 to reciprocate through the gear rod 5. The thigh arm seat 8 drives the user's thigh to rotate, achieving the effect of exercise and rehabilitation. The two staggered reciprocating screws 33 achieve the effect of driving the two thigh arm seats 8 to move in an alternating manner, thereby achieving the effect of alternating exercise for the elderly user's legs. During the movement of the reciprocating screw 33 driving the gear rod 5, the gear rod 5 and the worm gear column 6 are engaged for a period of time and then lose connection. However, the continuing to move gear rod 5 will contact the lower leg drive rod 96 and drive the user's thigh to rotate. Before the movement begins, the rotating thigh arm seat 8 drives the limiting slide seat 92, which is restricted to linear motion, upward via the sliding shaft 91 at its bottom. The limiting slide seat 92 then drives the calf arm seat 94 upward via the shaft 93. During this upward movement, the protrusion 95 on the shaft 93 moves to the groove at the bottom of the calf drive rod 96. When the rack 5 pushes the calf drive rod 96, the calf drive rod 96 drives the protrusion 95 and the shaft 93 to rotate via the groove. The shaft 93 then drives the calf arm seat 94 to rotate, and the rotating calf arm seat 94 drives the user's calf area to rotate. The overall movement state of the thigh arm seat 8 and the calf arm seat 94 is as follows. Simulating the movement of the thigh lifting and the lower leg extending forward when the human body walks, when the reciprocating screw 33 drives the toothed rod 5 to move back to its original position, it sequentially drives the lower leg arm seat 94 and the thigh arm seat 8 to rotate back to their original position. This then simulates the movement of the lower leg moving backward and the upper leg moving downward when the human body walks, further achieving the effect of controlling and training both the user's thigh and lower leg, improving the balance of the lower limb movement of elderly users. This reciprocating motion then achieves the effect of automatically controlling the lower limbs of elderly users for exercise rehabilitation, allowing them to passively train without having to exert extra force to perform rehabilitation exercises, further reducing the user's exercise burden and making rehabilitation easier.

[0039] The above embodiments are only used to illustrate the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the embodiments of the present invention, and the patent protection scope of the embodiments of the present invention should be defined by the claims.

Claims

1. A rehabilitation device for maintaining the limb function of the elderly, comprising a rehabilitation base (1), characterized in that: The rehabilitation base (1) is internally fixedly connected to a motor (2), the output shaft of the motor (2) is connected to a lead screw and pulley combination rod (3), the surface of the lead screw and pulley combination rod (3) is slidably connected to a sleeve (4), the end of the sleeve (4) is fixedly connected to a gear rod (5), the inside of the rehabilitation base (1) is rotatably connected to a worm gear column (6), the surface of the worm gear column (6) is meshed with a worm wheel (7), the end of the worm wheel (7) is fixedly connected to a thigh arm seat (8) through a shaft, the inside of the thigh arm seat (8) is provided with a rehabilitation clamping device (9), and the inside of the rehabilitation base (1) is provided with a fall-back protection device (10). The rear fall protection device (10) includes a connecting rod (101), both ends of which are elastically connected to the inside of the rehabilitation base (1) via torsion springs. A back brace (102) is fixedly connected to the surface of the connecting rod (101), and a locking rod (103) is slidably connected to the top of the connecting rod (101). The screw pulley combination rod (3) includes a transmission wheel (31), one end of which is fixedly connected to the output shaft of the motor (2), and the other end of which is rotatably connected to a transmission gear (32). (32) A reciprocating screw (33) is fixedly connected to one end away from the transmission wheel (31), and an internal gear belt (34) is connected to the surface of the transmission wheel (31); the surface of the reciprocating screw (33) is slidably connected to the inside of the sleeve column (4), and the surface of the reciprocating screw (33) is rotatably connected to the inside of the rehabilitation base (1); the surface of the internal gear belt (34) meshes with the surface of the transmission gear (32); the surface of the rack (5) is slidably connected to the inside of the rehabilitation base (1); the worm gear column (6) is composed of a worm and a gear. The top of the worm gear (7) is rotatably connected to the inside of the rehabilitation base (1). The inside of the worm gear (7) is rotatably connected to the inside of the rehabilitation base (1) via a shaft. The rehabilitation clamping device (9) includes a sliding shaft (91), a calf drive rod (96), and a leg clamping device (97). The end of the sliding shaft (91) is fixedly connected to the bottom of the thigh arm seat (8). The surface of the sliding shaft (91) is slidably connected to a limiting slide (92). The bottom of the limiting slide (92) is rotatably connected to a shaft (93). The end of the shaft (93) is fixedly connected to a calf arm seat (94). The surface of the shaft (93) is fixedly connected with a protrusion (95); the surface of the limiting slide (92) is slidably connected to the inner wall of the rehabilitation base (1); the surface of the calf drive rod (96) is elastically connected to the inside of the rehabilitation base (1) by a spring, and a groove is provided at the bottom of the calf drive rod (96); during the period when the reciprocating screw (33) drives the rack (5) to move, the rack (5) and the worm gear (6) are engaged for a period of time and then lose connection, but the rack (5) that continues to move will contact the calf drive rod (96) and drive the calf drive rod (96) to move.

2. The rehabilitation device for maintaining limb function in the elderly according to claim 1, characterized in that: The surface of the lever (103) is fixedly connected with a locking strip, and the surface of the lever (103) is elastically connected to the top of the rehabilitation base (1) by a spring. A protective sleeve (104) is fixedly connected between the bottom of the lever (103) and the top of the rehabilitation base (1). A locking groove is provided on the top of the connecting rod (101).

3. A rehabilitation device for maintaining the limb function of the elderly according to claim 2, characterized in that: The leg clamping device (97) includes a fixed clamping ring (971), a movable clamping ring (972), a gear ring seat (974), and a pressing and fixing device (98). The bottom end of the movable clamping ring (972) is elastically connected to the inside of the thigh arm seat (8) through a torsion spring. The top of the movable clamping ring (972) is fixedly connected to a shaft plate (973). The inside of the gear ring seat (974) is threadedly connected to a screw (975). The end of the screw (975) is fixedly connected to a limit telescopic plate (976).

4. A rehabilitation device for maintaining limb function in the elderly according to claim 3, characterized in that: The end of the gear ring seat (974) is rotatably connected to the surface of the thigh arm seat (8), and the end of the limiting telescopic plate (976) is fixedly connected to the interior of the thigh arm seat (8).

5. A rehabilitation device for maintaining limb function in the elderly according to claim 3, characterized in that: The pressing and fixing device (98) includes a long rod (981) and a card seat (986). The surface of the long rod (981) is slidably connected to the inside of the rehabilitation base (1). The top end of the long rod (981) is fixedly connected to a handle (982). The long rod (981) is rotatably connected to a frame-shaped rack (983). The inside of the long rod (981) is fixedly connected to a connecting block (984). The inside of the connecting block (984) is elastically connected to a card block (985) by a spring.

6. A rehabilitation device for maintaining limb function in the elderly according to claim 5, characterized in that: The surface of the long rod (981) is rotatably connected to the inside of the clamp rod (103), the end of the long rod (981) is elastically connected to the inside of the rehabilitation base (1) through a torsion spring, the surface of the frame-shaped rack (983) is slidably connected to the inside of the rehabilitation base (1), and the surface of the clamp (986) is fixedly connected to the inside of the rehabilitation base (1).

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