Foldable lower limb rehabilitation wheelchair

Abstract

The invention provides a foldable lower limb rehabilitation wheelchair which comprises a wheelchair mechanism, a rehabilitation mechanism and a folding mechanism, the wheelchair mechanism can achieve a daily walking replacing function, the rehabilitation mechanism comprises leg rehabilitation assemblies and a pedal assembly, the leg rehabilitation assemblies are arranged on the two sides of the wheelchair mechanism respectively, and the pedal assembly is connected to one end of each leg rehabilitation assembly. The rehabilitation mechanism is arranged between the two sets of leg rehabilitation assemblies, the leg rehabilitation assemblies can assist in achieving leg movement, the pedal assembly can assist in achieving foot movement, therefore, comprehensive exercise can be conducted on the lower limbs, and when exercise is not conducted, the rehabilitation mechanism can serve as a pedal part of a wheelchair to provide support for the lower limbs of a patient; the folding mechanism is arranged below the rehabilitation mechanism, is connected with the rehabilitation mechanism when unfolded to jointly achieve movement of the pedal assembly, and can be stored below the wheelchair mechanism when folded without occupying space.

Description

Technical Field

[0001] The invention belongs to the field of medical rehabilitation equipment, and in particular relates to a foldable lower limb rehabilitation wheelchair. Background Art

[0002] As the global population ages, the number of elderly people continues to increase, and lower limb dysfunction has become one of the common problems of the elderly, seriously affecting their quality of life. Therefore, the demand for equipment to assist in improving mobility is becoming stronger. As an indispensable tool in social rehabilitation projects, smart wheelchairs have strong environmental adaptability, safe and stable movement performance, and intelligent interaction methods. They have important research value and social significance for improving the quality of life of the elderly and disabled.

[0003] For patients with lower limb dysfunction, in addition to mobility assistance, rehabilitation training is also an important need. Long-term use of wheelchairs by patients will lead to weakened leg motor function and muscle atrophy. Therefore, a wheelchair design with lower limb rehabilitation training function is proposed to meet the patient's needs for use from wheelchairs to lower limb rehabilitation training equipment and reduce the risk of transfer. It is necessary to develop a rehabilitation wheelchair with a foldable rehabilitation mechanism to facilitate patients to perform leg rehabilitation in their daily lives. Summary of the invention

[0004] In view of the shortcomings of the prior art mentioned above, the purpose of the present invention is to provide a foldable lower limb rehabilitation wheelchair, which can not only realize the walking function of the wheelchair, but also assist in rehabilitation training. By utilizing the design of the folding mechanism, the wheelchair structure can be flexibly changed, so as to better realize its multiple functions and achieve good rehabilitation effects.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a foldable lower limb rehabilitation wheelchair, comprising:

[0006] Wheelchair institutions;

[0007] A rehabilitation mechanism is arranged at the front end of the wheelchair mechanism and connected to the wheelchair mechanism, the rehabilitation mechanism comprises a leg rehabilitation component and a pedal component, two groups of the leg rehabilitation components are respectively arranged on both sides of the wheelchair mechanism, the pedal component is connected to one end of the leg rehabilitation component and is arranged between the two groups of the leg rehabilitation components;

[0008] A folding mechanism, disposed below the rehabilitation mechanism and connected to the wheelchair mechanism;

[0009] When the folding mechanism is unfolded, one end of the folding mechanism is connected to the wheelchair mechanism, and the other end is connected to the pedal assembly. The folding mechanism supports the rehabilitation mechanism and can drive the pedal assembly to rotate;

[0010] When the folding mechanism is folded, one end thereof is connected to the wheelchair mechanism, and the other end thereof is stored under the wheelchair mechanism.

[0011] In an optional embodiment of the present invention, the leg rehabilitation component comprises:

[0012] A connecting rod, arranged on both sides of the wheelchair mechanism, one end of the connecting rod is connected to the wheelchair mechanism through a first connecting member, and the other end is connected to the pedal assembly;

[0013] The support member is arranged between the two groups of connecting rods.

[0014] In an optional embodiment of the present invention, the first connecting member includes a first rotating member and a first fixed member, the connecting rod is connected to the wheelchair mechanism via the first rotating member, the first rotating member can drive the connecting rod to rotate, and the first fixed member fixes the connecting rod to the wheelchair mechanism when tightened.

[0015] In an optional embodiment of the present invention, the pedal assembly is connected to the connecting rod via a second connecting member, the second connecting member includes a second rotating member and a second fixed member, the pedal assembly is rotatably connected to the connecting rod via the second rotating member, and the second fixed member fixes the pedal assembly to the connecting rod when tightened.

[0016] In an optional embodiment of the present invention, the folding mechanism comprises:

[0017] a fixing plate connected to the wheelchair mechanism;

[0018] A movable plate is connected to the fixed plate and can be rotated relative to the fixed plate to be folded or unfolded. A rotating shaft frame is provided on the movable plate, and a third connecting member is connected to the rotating shaft frame.

[0019] When the folding mechanism is unfolded, the third connecting member is connected to the pedal assembly and drives the pedal assembly to rotate. When the folding mechanism is folded, the third connecting member and the movable plate are folded and stored at the bottom of the wheelchair mechanism.

[0020] In an optional embodiment of the present invention, a locking spring is further provided at the connection between the fixed plate and the movable plate, and when the movable plate is folded, the locking spring locks and fixes the movable plate and the fixed plate.

[0021] In an optional embodiment of the present invention, the wheelchair mechanism includes a wheelchair cushion, a storage board is further provided below the wheelchair cushion, and the fixing plate is connected to the bottom surface of the storage board.

[0022] In an optional embodiment of the present invention, the wheelchair mechanism includes wheels, which are symmetrically distributed on both sides of the wheelchair mechanism, and the wheels include a first wheel and a second wheel, and the first wheel and the second wheel are respectively arranged at the front end and the rear end of the wheelchair mechanism.

[0023] In an optional embodiment of the present invention, a brake mechanism is further included, which is arranged on both sides of the wheelchair mechanism, and the brake mechanism includes:

[0024] A pressing member connected to the wheelchair mechanism;

[0025] The brake member is connected to the pressing member through a linkage member. When the pressing member is actuated, the linkage member drives the brake member to actuate and engage with the second wheel. The brake member contacts the second wheel and achieves braking through friction.

[0026] In an optional embodiment of the present invention, a protective layer is further provided on the surface of the wheelchair mechanism.

[0027] The technical effect of the present invention is that, while the wheelchair mechanism is used to realize the function of replacing walking, a rehabilitation mechanism is added to assist in realizing lower limb rehabilitation exercises. The leg rehabilitation component can rotate relative to the wheelchair mechanism to realize leg bending and straightening exercises. The pedal assembly cooperates with the folding mechanism and the leg rehabilitation component to stably support the pedal assembly and realize its rotation, thereby ensuring a better lower limb rehabilitation exercise effect; the folding mechanism can be folded and stored on one side of the bottom of the wheelchair seat when not needed, and will not occupy space; the pedal assembly and the leg rehabilitation component and the leg rehabilitation component and the wheelchair mechanism can be rotated or fixed as needed. When rehabilitation exercises or angle adjustment are required, the pedal assembly and the leg rehabilitation component can be rotated by the rotating part. When the wheelchair is used as a means of replacement walking, the fixing parts can be used to fix the various components. The rehabilitation mechanism is used as the footrest of the wheelchair to support the lower limbs, and the angle can be adjusted as needed, or it can be stored on both sides of the wheelchair mechanism according to activity needs, thereby improving the comfort of use and ensuring the convenience of daily use. Various needs can be met through structural adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of a foldable lower limb rehabilitation wheelchair in one embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of the overall structure of a foldable lower limb rehabilitation wheelchair in one embodiment of the present invention;

[0031] Figure 3 It is a structural schematic diagram of a wheelchair mechanism in one embodiment of the present invention;

[0032] Figure 4 It is a schematic structural diagram of an anti-scoliosis assembly in one embodiment of the present invention;

[0033] Figure 5 It is a structural schematic diagram of a rehabilitation mechanism and a folding mechanism in one embodiment of the present invention;

[0034] Figure 6 It is a structural schematic diagram of a folding mechanism in one embodiment of the present invention;

[0035] Figure 7 It is a schematic diagram of the overall structure of a lower limb rehabilitation wheelchair that is foldable when the folding mechanism is folded in one embodiment of the present invention.

[0036] Description of labels:

[0037] 100, wheelchair mechanism; 200, rehabilitation mechanism; 300, folding mechanism;

[0038] 110, wheelchair frame; 120, wheels; 130, storage board; 140, armrests; 150, anti-scoliosis component; 160, brake mechanism; 170, handle;

[0039] 121, first wheel; 122, second wheel; 151, spinal support frame; 152, fabric layer; 153, airbag; 154, airbag ball; 155, wearable layer; 161, pressing member; 162, linkage member; 163, brake member; 1631, first clamping block; 1632, second clamping block;

[0040] 210. Leg rehabilitation assembly; 220. Pedal assembly;

[0041] 211, connecting rod; 212, supporting member; 213, first connecting member; 214, second connecting member;

[0042] 310, fixed plate; 320, movable plate; 330, rotating shaft frame; 340, third connecting member. DETAILED DESCRIPTION

[0043] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0044] It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0045] Wheelchairs are mostly used to assist in achieving mobility in daily life. However, for patients with lower limb dysfunction, long-term use of wheelchairs will lead to weakened leg motor function and muscle atrophy. Therefore, in addition to mobility assistance, rehabilitation training is also an important need. Since patients with lower limb dysfunction have difficulty in moving and frequent transfers can easily cause risks, it is necessary to combine rehabilitation training institutions with wheelchairs so that patients can achieve lower limb rehabilitation exercises in wheelchairs. Therefore, how to modify the structure of the wheelchair to ensure that it can meet the mobility function while also achieving better rehabilitation training assistance functions, and not cause inconvenience to patients' daily use due to changes in the wheelchair structure, is a problem that needs to be solved.

[0046] See also Figures 1 to 7The present invention proposes a foldable lower limb rehabilitation wheelchair, comprising a wheelchair mechanism 100, a rehabilitation mechanism 200 and a folding mechanism 300. The wheelchair mechanism 100 can realize the daily basic walking function. The rehabilitation mechanism 200 and the folding mechanism 300 are arranged on the wheelchair mechanism 100 to jointly realize the lower limb rehabilitation function. Among them, the rehabilitation mechanism 200 is arranged at the front end of the wheelchair mechanism 100 and is connected to the wheelchair mechanism 100, which can assist in realizing the rehabilitation exercise of the lower limbs. When not exercising, the rehabilitation mechanism 200 can also be used as a wheelchair. The footrest provides support for the patient's lower limbs; the folding mechanism 300 is arranged below the rehabilitation mechanism 200 and is connected to the wheelchair mechanism 100. When the folding mechanism 300 is unfolded, one end thereof is connected to the wheelchair mechanism 100, and the other end is connected to the rehabilitation mechanism 200. The folding mechanism 300 supports the rehabilitation mechanism 200 and can drive the rehabilitation mechanism 200 to move to achieve rehabilitation exercises for the lower limbs. When the folding mechanism 300 is folded, one end thereof is connected to the wheelchair mechanism 100, and the other end can be stored below the wheelchair mechanism 100 without occupying space. The lower limb rehabilitation wheelchair of the present invention can take into account both the wheelchair walking function and the rehabilitation function of assisting the legs in swinging exercises. The wheelchair walking function and the rehabilitation function can be effectively converted through simple folding. The folding mechanism 300 and the rehabilitation mechanism 200 are used together to assist the lower limb rehabilitation exercises. The rehabilitation exercise effect is better and the exercise of the lower limbs is more comprehensive. The folding mechanism 300 can be stored and folded at any time. When not in use, it can be folded up to facilitate the patient's travel. The rehabilitation mechanism 200 can also adjust the angle and position as needed, which will not affect daily use and is convenient for patients to carry out various activities.

[0047] See also Figures 1 to 3 In an optional embodiment of the present invention, the wheelchair mechanism 100 includes a wheelchair frame 110, and the wheelchair frame 110 includes a plurality of support shafts. The support shafts can be fixed by welding, for example, to ensure strength. The wheelchair frame 110 is used to support the entire structure. A wheelchair cushion, a wheelchair back plate and side guard plates are installed on the wheelchair frame 110 to achieve support and protection. The wheels 120 are installed at the bottom of the wheelchair frame 110 and symmetrically distributed on both sides, which can assist in moving and realize the walking function of the wheelchair; a storage board 130 is also provided under the wheelchair cushion. The storage board 130 is located under the cushion, which is convenient for placing items in daily use without occupying space. When the folding mechanism 300 is folded, it can also be partially engaged between the cushion and the storage board 130, which is convenient for storing the folding mechanism 300 and reducing space occupation.

[0048] See also Figures 1 to 3 In an optional embodiment of the present invention, a protective layer is further provided on the surface of the wheelchair mechanism 100, soft pads are provided on the wheelchair seat cushion and the wheelchair back panel, and the armrests 140 of the wheelchair are wrapped with a soft material layer to improve the comfort of use and prevent injuries.

[0049] See also Figures 1 to 4 In an optional embodiment of the present invention, an anti-scoliosis component 150 is further provided on the back panel of the wheelchair. Scoliosis is prone to occur when patients sit in a wheelchair for a long time. The anti-scoliosis component 150 can be used to timely adjust the patient's sitting posture to ensure comfortable use and effectively prevent scoliosis. Specifically, the anti-scoliosis component 150 includes a spinal support frame 151, a woven fabric layer 152, an airbag 153, an airbag ball 154 and a wearable layer 155. The spinal support frame 151 is fixed to the back panel of the wheelchair, and is connected to the airbag 153 layer through the woven fabric layer 152. The position of the airbag 153 is adapted to the position of the waist and back. The multiple rows of airbags 153 are arranged vertically. When the patient sits on the wheelchair, the airbag 153 can provide support to ensure comfort. By inflating and deflating the airbag 153, the patient's posture can be adjusted when the airbag 153 expands or contracts; the airbag ball 154 and The airbag 153 is connected to the back of the patient, and the fluid state inside the airbag 153 can be controlled. When the patient sits in the wheelchair, he can hold the airbag ball 154 and press the airbag ball 154 to inflate the airbag 153 layer, so as to push the spine straight and prevent scoliosis. At the same time, the patient can also exercise his hands to a certain extent. The wearing layer 155 is arranged on both sides, and has Velcro built in, which is convenient for adjustment and fixation. By tightening the wearing layer 155, the patient can be closely attached to the rear airbag 153 layer, so as to support the patient's waist and back and adjust the posture, and ensure the stability of the patient's position. In other embodiments, the airbag 153 can also be inflated and deflated by an external control device, and multiple groups of airbags 153 can be arranged and adjusted to achieve a massage function.

[0050] See also Figures 1 to 3 In an optional embodiment of the present invention, the first wheel 121 and the second wheel 122 are connected to both sides of the wheelchair frame 110. The first wheel 121 and the second wheel 122 are respectively arranged at the front end and the rear end of the wheelchair mechanism 100. The second wheel 122 at the rear end can assist in supporting the wheelchair as a whole and realize the movement. The second wheel 122 at the front end assists in maintaining the balance and is convenient for adjusting the direction. A brake mechanism 160 is also arranged at the second wheel 122. The brake mechanism 160 is used to brake the second wheel 122, so that the wheelchair as a whole stops and remains stable. Specifically, the brake mechanism 160 is arranged on both sides of the wheelchair mechanism 100, for example, it can be arranged at the rear end handle 170 position, so that the medical staff can perform the brake operation when pushing the wheelchair. The brake mechanism 160 can also be arranged at the front end armrest 140 of the wheelchair so that the patient can move and brake independently.

[0051] See also Figures 1 to 3In an optional embodiment of the present invention, the brake mechanism 160 includes a pressing member 161, a linkage member 162 and a brake member 163. The pressing member 161 is connected to the wheelchair mechanism 100 and is arranged on the rear side of the armrest 140. The brake member 163 is connected to the pressing member 161 through the linkage member 162. When the pressing member 161 is actuated, the linkage member 162 drives the brake member 163 to actuate and engage with the second wheel 122. The brake member 163 contacts the second wheel 122 and achieves braking through friction. Specifically, the pressing member 161 is, for example, a pressing rod, which is rotatably connected to the handle 170 on the rear side of the wheelchair through a pressing connecting member. The linkage member 162 includes a connecting rod and a spring. The connecting rod is connected to the bottom of the pressing rod and is located on the inner side of the rotating connection point. The spring, for example, can be arranged between the pressing rod and the handle 170 and is located on the inner side of the rotating connection point. When the pressing rod is pressed from the outside, the inner connecting rod is pulled up due to its rotation, and the spring is compressed at the same time. When the hand is released, the elastic release of the spring can reset the connecting rod and the pressing rod, thereby realizing the adjustment of the position of the pressing rod and the connecting rod. The brake member 163 includes a first clamping block 1631 and a second clamping block 1632. The first clamping block 1631 is connected to an end of the connecting rod away from the pressing rod, and the second clamping block 1632 is connected to the wheelchair frame 110 and is arranged on the outer side of the second wheel 122. The first clamping block 1631 is arranged on the outer side of the second clamping block 1632. A first wedge block is arranged on the side of the first clamping block 1631 close to the second clamping block 1632, and a second wedge block is arranged on the side of the second clamping block 1632 close to the first clamping block 1631. A brake block is also arranged on the side close to the second wheel 122.

[0052] During normal travel, the pressing rod is in a parallel state, the spring is in a natural state, there is a certain gap between the brake block and the second wheel 122, and the first wedge block is located below the second wedge block. When the outer side of the pressing rod is pressed, the pressing rod rotates relatively, and the inner connecting rod moves upward accordingly, driving the first clamping block 1631 at the end to move upward, and the first wedge block contacts the second wedge block, and gradually squeezes the second clamping block 1632 inward under their cooperation, and then the brake block inside the second clamping block 1632 is engaged with both sides of the second wheel 122 and squeezes its surface, using friction to achieve braking and maintain the stability of the wheelchair; when continuing to travel, release the pressing rod, and when the spring elastic force is restored, the connecting rod and the pressing rod are driven to reset, the second clamping block 1632 is released, and the braking ends. It can be understood that in other embodiments, the position of the spring can also be set differently, and a brake line or the like can be used to drive the brake member 163 to move so as to engage with the second wheel 122, and an elastic member or the like can be set at the brake member 163 to ensure the stability of the braking process.

[0053] See also Figures 1 to 7In an optional embodiment of the present invention, the rehabilitation mechanism 200 is arranged at the front end of the wheelchair mechanism 100 and connected to both sides of the wheelchair mechanism 100. The rehabilitation mechanism 200 includes a leg rehabilitation component 210 and a pedal component 220. Two groups of leg rehabilitation components 210 are respectively arranged on both sides of the wheelchair mechanism 100. The pedal component 220 is connected to one end of the leg rehabilitation component 210 and is arranged between the two groups of leg rehabilitation components 210. When performing passive rehabilitation training, the leg rehabilitation component 210 and the pedal component 220 can rotate with the movement of the legs and feet respectively. When active rehabilitation training is required, the leg rehabilitation component 210 and the pedal component 220 can also be driven to rotate by an external driving member, and the rotation thereof can be used to drive the patient's legs or ankles to move to achieve exercise. It should be noted that when rehabilitation training is not needed, the various components of the rehabilitation mechanism 200 are locked so that it can be used as the footrest of the wheelchair to support the patient's lower limbs. Before fixation, the various components of the rehabilitation mechanism 200 can also be fine-tuned to adapt to the patient's body shape and ensure comfortable use. When the patient needs to leave the wheelchair to perform other activities, the rehabilitation mechanism 200 can also be folded up as a whole through adjustment to leave enough space in front of the wheelchair to reduce obstacles and facilitate the patient to perform various activities.

[0054] See also Figures 1 to 7 In an optional embodiment of the present invention, the leg rehabilitation component 210 includes a connecting rod 211 and a support member 212. The connecting rod 211 is arranged on both sides of the wheelchair mechanism 100. One end of the connecting rod 211 is connected to the wheelchair mechanism 100 through a first connecting member 213, and the other end is connected to the pedal assembly 220. The leg exercise can be achieved by rotating the connecting rod 211 relative to the wheelchair mechanism 100, and the foot exercise can be achieved by the relative rotation of the pedal assembly 220 and the connecting rod 211; the support member 212 is arranged between the two groups of connecting rods 211, and includes a support rod, a leg fixing plate and a strap. The support rod connects the leg fixing plate between the two connecting rods 211. The patient can place the calf on the leg fixing plate and adjust and fix it through the strap. When performing rehabilitation training, the support member 212 is used to support the patient's legs and assist in lifting the legs. The exercise effect is good and the comfort is high. In daily use, the patient's lower limbs can also be stably supported to improve safety.

[0055] See also Figures 1 to 7In an optional embodiment of the present invention, the first connecting member 213 includes a first rotating member and a first fixed member, and the connecting rod 211 is rotatably connected to the wheelchair mechanism 100 through the first rotating member. When the connecting rod 211 is connected to the wheelchair mechanism 100 through the first rotating member, the first rotating member can drive the connecting rod 211 to rotate, and when the first fixed member is tightened, the connecting rod 211 can be fixed to the wheelchair mechanism 100. Specifically, the first rotating member is a first rotating shaft, which is fixed to the connecting rod 211 and rotatably connected to the wheelchair frame 110, and can rotate with the active movement of the legs, or rotate through a driving member such as a motor to drive the passive movement of the legs; the first fixed member includes an adjusting disk, on which a dial and built-in gear teeth are provided, and the wheelchair frame 110 is provided with a corresponding pawl. The adjusting disk is installed on the connecting rod 211, and the angle of the connecting rod 211 can be adjusted and the connecting rod 211 can be fixed to the wheelchair frame 110 through an internal ratchet mechanism. The ratchet mechanism is used for locking to ensure stability and prevent the buckle from loosening during long-term use. The structure is simple and convenient for disassembly at any time as needed. It should be noted that the first fixing member is used to adjust and lock the connecting rod 211 when the wheelchair is used for daily transportation, so that the leg rehabilitation component 210 and the pedal component 220 can better adapt to the lower limbs, improve comfort, and ensure the stability of the structure when the wheelchair is moving. When performing rehabilitation training, the reciprocating rotation of the connecting rod 211 is to be achieved. At this time, the first fixing member can be opened so that the connecting rod 211 can be rotated under the action of the first rotating member without hindering the movement of the legs. In other embodiments, the first fixing member can also be a fixing pin or a buckle structure, etc., and a corresponding connecting hole or connecting groove is provided on the wheelchair frame 110 to achieve the locking between the connecting rod 211 and the wheelchair mechanism 100.

[0056] See also Figures 1 to 7In an optional embodiment of the present invention, the pedal assembly 220 includes two symmetrically arranged pedals. When the folding mechanism 300 is unfolded, one end of the pedal assembly 220 is connected to the wheelchair mechanism 100, and the other end is connected to the pedal, which can support the pedal and drive it to rotate. When the folding mechanism 300 is folded, it is stored under the wheelchair mechanism 100 and is not connected to the pedal. The other end of the pedal assembly 220 is connected to the connecting rod 211 through the second connecting member 214. The second connecting member 214 includes a second rotating member and a second fixed member. The pedal assembly 220 is rotatably connected to the connecting rod 211 through the second rotating member. When the second fixed member is tightened, the pedal assembly 220 is fixed to the connecting rod 211. The second rotating member is arranged at one end where the pedal assembly 220 is connected to the connecting rod 211, and is used for adjusting the angle of the pedal assembly 220, or cooperating with the folding mechanism 300 to realize the rotation of the pedal assembly 220 to achieve foot exercise; the second fixing member is used to fix the pedal assembly 220 to the connecting rod 211 when rehabilitation training is not required, so that the patient can place his feet on the pedals and keep them stable when using the wheelchair in daily life. The connection method between the pedal assembly 220 and the connecting rod 211 is similar to the connection method between the connecting rod 211 and the wheelchair frame 110, and can be fixed by, for example, a ratchet or a slot, and can be disassembled at any time without affecting the rotation function of the pedal assembly 220.

[0057] See also Figures 1 to 7 In an optional embodiment of the present invention, the connecting rod 211 may also include a first connecting rod 211 and a second connecting rod 211, the first connecting rod 211 is connected to the wheelchair frame 110, and the support member 212 includes a thigh support member and a calf support member. The first connecting rod 211 is provided with a thigh support member to assist in fixing the human body, and the thigh can be slightly lifted by the relative rotation of the first connecting rod 211 and the wheelchair frame 110, so as to achieve a small range of thigh exercise; the second connecting rod is provided with a calf support member to support and assist in lifting the calf for lower limb exercise; the pedal assembly 220 and the folding mechanism 300 and the second connecting rod jointly achieve ankle exercise; each connection point can also be fixed by a fixing member that is easy to disassemble to ensure the structural stability of the wheelchair during daily use, and the connection method is as described in the above embodiment. It can be understood that when the patient sits on the wheelchair cushion, most of the area of ​​his thigh is located on the wheelchair cushion, so the first connecting rod 211 is short and approximately parallel to the cushion plane, which conforms to the human body structure, and at the same time, the form of rehabilitation exercise is more comprehensive, further enhancing the training effect.

[0058] See also Figures 1 to 7In an optional embodiment of the present invention, the folding mechanism 300 is disposed below the rehabilitation mechanism 200 and connected to the wheelchair mechanism 100. When the folding mechanism 300 is unfolded, one end thereof is connected to the wheelchair mechanism 100 and the other end is connected to the pedal assembly 220. The folding mechanism 300 supports the rehabilitation mechanism 200 and can drive the pedal assembly 220 to rotate. When the folding mechanism 300 is folded, one end thereof is connected to the wheelchair mechanism 100 and the other end is stored below the wheelchair mechanism 100. The folding mechanism 300 is connected to the rehabilitation mechanism 200 to realize lower limb rehabilitation training, effectively ensuring the strength of the structure and achieving better rehabilitation training effect.

[0059] See also Figures 1 to 7 In an optional embodiment of the present invention, the folding mechanism 300 includes a fixed plate 310 and a movable plate 320. The fixed plate 310 is connected to the wheelchair mechanism 100, and the movable plate 320 is connected to the fixed plate 310. Specifically, for example, the movable plate 320 can be connected to the fixed plate 310 by a cylindrical pin, and it can rotate relative to the fixed plate 310 to be folded or unfolded. A locking spring is also provided at the connection between the fixed plate 310 and the movable plate 320. When the folding mechanism 300 is folded, the locking spring can lock and fix the movable plate 320 and the fixed plate 310 to ensure the integrity and stability of the overall structure of the wheelchair. The movable plate 320 is provided with a rotating shaft frame 330, and the rotating shaft frame 330 is provided with a third connecting member 340 for connecting the folding mechanism 300 and the pedal assembly 220; when the folding mechanism 300 is unfolded, the third connecting member 340 is connected to the pedal assembly 220 and drives the pedal assembly 220 to rotate, and when the folding mechanism 300 is folded, the third connecting member 340 and the movable plate 320 are folded and stored at the bottom of the wheelchair mechanism 100. To facilitate the folding and storage of the folding mechanism 300, the fixed plate 310 can be connected to the bottom surface of the storage plate 130. When the folding mechanism 300 is folded, the rotating shaft frame 330 on the movable plate 320 can be stored in the space between the storage plate 130 and the seat cushion, thereby reducing the occupation of the wheelchair space.

[0060] See also Figures 1 to 7In an optional embodiment of the present invention, the fixed plate 310 is, for example, an "L"-shaped plate, one end of which is fixed to the bottom of the storage plate 130, and the other end is connected to the movable plate 320. The fixed plate 310 has a protruding wedge-shaped support block, which can make the force distribution of the entire structure more uniform when connected. A first protrusion is formed upward at one end of the wedge-shaped support block, and a second protrusion is formed at one end of the movable plate 320. The first protrusion and the second protrusion can be engaged with each other and pin holes are opened in the center. The fixed plate 310 is connected to the movable plate 320 by using a fixing pin, and it can be realized Relative rotation, when the movable plate 320 is unfolded, its end is in contact with the end of the fixed plate 310 and is fixed through the upper pin hole, ensuring the overall stability of the folding mechanism 300 and supporting the upper pedal assembly 220. When folding is required, the movable plate 320 is rotated upward to a position roughly perpendicular to the wheelchair cushion and the buckle plate is pressed, and locked by the locking spring to prevent the movable plate 320 from falling. At this time, the end of the movable plate 320 is in contact with the bottom of the cushion, and the shaft frame 330 is placed between the cushion and the storage plate 130, which will not affect the normal use of the wheelchair.

[0061] See also Figures 1 to 7 In an optional embodiment of the present invention, the rotating shaft frame 330 is fixed at the center of the movable plate 320 and is perpendicular to the plane of the movable plate 320. When the movable plate 320 is unfolded, the rotating shaft frame 330 is connected to the pedal assembly 220 through the third connecting member 340. The rotating shaft frame 330 and the fixed plate 310 form a support for the pedal assembly 220, and can drive the pedal assembly 220 to rotate through the third connecting member 340 to achieve rehabilitation exercises for the feet. Specifically, one end of the third connecting member 340 is fixed to the rotating shaft frame 330, and the other end is provided with a telescopic rod that can be telescoped and adjusted. When the folding mechanism 300 is folded up, the telescopic rod shrinks inside the connecting member. When the folding mechanism 300 is opened, the telescopic rod can be pulled out and connected with the side perforation of the pedal assembly 220, thereby fixing the third connecting member 340 to the pedal assembly 220. When the other side of the pedal assembly 220 is rotatably connected with the connecting rod 211, the driving mechanism is used to drive the third connecting rod to rotate relative to the rotating shaft frame 330, thereby driving the pedal assembly 220 to rotate to achieve the exercise of the ankle joint. Active training can also be performed, and when the foot rotates, the pedal assembly 220 is driven to rotate relative to the rotating shaft frame 330 and the connecting rod 211. In other embodiments, the two sides of the pedal assembly 220 can also be fixed to the third connecting member 340 and the connecting rod 211 respectively. When the third connecting member 340 drives the pedal assembly 220 to rotate, the small amplitude swing of the connecting rod 211 is used to achieve the small amplitude exercise of the foot.

[0062] See also Figures 1 to 7When the wheelchair is used daily, the patient sits on the wheelchair, and the folding mechanism 300 is folded at the bottom of the wheelchair mechanism 100. According to the patient's body shape and comfort needs, the angle of the connecting rod 211 and the pedal assembly 220 can be adjusted through the adjustment disk on the fixing member, and the components are fixed. The patient can place his feet on the pedals and support his legs through the support member 212 to ensure stability and comfort. When the patient needs to transfer, the rehabilitation mechanism 200 can be folded up as a whole to leave space for easy transfer; during the rehabilitation training stage, when leg training is required, the first fixing member is opened to cancel the lock on the connecting rod 211, so that the connecting rod 211 can rotate relative to the wheelchair frame 110 to The active or passive movement of the legs can be realized. When ankle joint training is needed, the connecting rod 211 is adjusted to a suitable angle and then locked with the wheelchair frame 110. The movable plate 320 of the folding mechanism 300 is rotated downward to unfold the folding mechanism 300. The end of the third connecting member 340 on the rotating shaft frame 330 is extended and connected to the pedal assembly 220, and the second fixing member between the pedal assembly 220 and the connecting rod 211 is opened, so that the pedal assembly 220 can be rotated relative to the folding mechanism 300 and the connecting rod 211 on both sides to realize the movement of the ankle joint. Passive training of the ankle joint can be realized when the third connecting member 340 is driven to rotate by the driving mechanism and the pedal assembly 220 is driven to rotate.

[0063] To sum up, in the foldable lower limb rehabilitation wheelchair of the present invention, the cooperation of the folding mechanism 300 and the rehabilitation mechanism 200 can achieve better lower limb rehabilitation training effects, and the folding mechanism 300 and the rehabilitation mechanism 200 can be stored or the angle adjusted as needed. The wheelchair will not take up too much space when moving normally, and it is convenient for patients to move. The patient's comfort can be guaranteed by angle adjustment; an anti-scoliosis component 150 is also provided on the back panel of the wheelchair, and the airbag 153 structure is used to adjust the patient's posture, effectively preventing scoliosis and improving comfort; each rotating mechanism is provided with a fixing part that is easy to disassemble, and can be conveniently disassembled and assembled according to the needs of the wheelchair, so as to fix the components or realize the rotation of the components, while improving the wheelchair mechanism 100 and ensuring the integrity and stability of the overall structure.

[0064] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

[0065] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0066] References throughout this specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics of any specific embodiment of the invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the invention described and illustrated herein may be possible in light of the teachings herein and are to be considered part of the spirit and scope of the invention.

[0067] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0068] In addition, unless otherwise explicitly indicated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise indicated, the term "or" used herein is generally intended to mean "and / or". In the case where the term is not clear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as indicated.

[0069] As used in the description herein and throughout the claims that follow, "a", "an", and "the" include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of "in" includes "in" and "on" unless otherwise indicated.

[0070] The above description of the illustrated embodiments of the present invention (including the contents described in the Abstract) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and appreciated by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments described in the present invention, and these modifications will be within the spirit and scope of the present invention.

[0071] Systems and methods have been generally described herein as details that aid in understanding the present invention. In addition, various specific details have been given to provide an overall understanding of embodiments of the present invention. However, those skilled in the relevant art will recognize that embodiments of the present invention may be practiced without one or more of the specific details, or may be practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusion with various aspects of embodiments of the present invention.

[0072] Thus, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the foregoing disclosure, and it should be understood that in some cases, some features of the invention will be employed without the corresponding use of other features without departing from the scope and spirit of the proposed invention. Thus, many modifications may be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode contemplated for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Thus, the scope of the invention will be determined solely by the appended claims.

Claims

1. A foldable lower limb rehabilitation wheelchair, characterized in that: include: Wheelchair institutions; A rehabilitation mechanism is arranged at the front end of the wheelchair mechanism and connected to the wheelchair mechanism, the rehabilitation mechanism comprises a leg rehabilitation component and a pedal component, two groups of the leg rehabilitation components are respectively arranged on both sides of the wheelchair mechanism, the pedal component is connected to one end of the leg rehabilitation component and is arranged between the two groups of the leg rehabilitation components; A folding mechanism, disposed below the rehabilitation mechanism and connected to the wheelchair mechanism; When the folding mechanism is unfolded, one end of the folding mechanism is connected to the wheelchair mechanism, and the other end is connected to the pedal assembly. The folding mechanism supports the rehabilitation mechanism and can drive the pedal assembly to rotate; When the folding mechanism is folded, one end thereof is connected to the wheelchair mechanism, and the other end thereof is stored under the wheelchair mechanism.

2. The foldable lower limb rehabilitation wheelchair according to claim 1, characterized in that: The leg rehabilitation kit comprises: A connecting rod, arranged on both sides of the wheelchair mechanism, one end of the connecting rod is connected to the wheelchair mechanism through a first connecting member, and the other end is connected to the pedal assembly; The support member is arranged between the two groups of connecting rods.

3. The foldable lower limb rehabilitation wheelchair according to claim 2, characterized in that: The first connecting member includes a first rotating member and a first fixing member. The connecting rod is connected to the wheelchair mechanism via the first rotating member. The first rotating member can drive the connecting rod to rotate. When the first fixing member is tightened, the connecting rod is fixed to the wheelchair mechanism.

4. The foldable lower limb rehabilitation wheelchair according to claim 2, characterized in that: The pedal assembly is connected to the connecting rod via a second connecting member, the second connecting member includes a second rotating member and a second fixed member, the pedal assembly is rotatably connected to the connecting rod via the second rotating member, and the second fixed member fixes the pedal assembly to the connecting rod when tightened.

5. The foldable lower limb rehabilitation wheelchair according to claim 1, characterized in that: The folding mechanism comprises: a fixing plate connected to the wheelchair mechanism; A movable plate is connected to the fixed plate and can rotate relative to the fixed plate to be folded or unfolded. A rotating shaft frame is provided on the movable plate, and a third connecting member is connected to the rotating shaft frame. When the folding mechanism is unfolded, the third connecting member is connected to the pedal assembly and drives the pedal assembly to rotate. When the folding mechanism is folded, the third connecting member and the movable plate are folded and stored at the bottom of the wheelchair mechanism.

6. The foldable lower limb rehabilitation wheelchair according to claim 5, characterized in that: A locking spring is also provided at the connection between the fixed plate and the movable plate. When the movable plate is folded up, the locking spring locks and fixes the movable plate and the fixed plate.

7. The foldable lower limb rehabilitation wheelchair according to claim 5, characterized in that: The wheelchair mechanism comprises a wheelchair cushion, a storage plate is further arranged below the wheelchair cushion, and the fixing plate is connected to the bottom surface of the storage plate.

8. The foldable lower limb rehabilitation wheelchair according to claim 1, characterized in that: The wheelchair mechanism comprises wheels, which are symmetrically distributed on both sides of the wheelchair mechanism. The wheels comprise a first wheel and a second wheel, and the first wheel and the second wheel are respectively arranged at the front end and the rear end of the wheelchair mechanism.

9. The foldable lower limb rehabilitation wheelchair according to claim 8, characterized in that: It also includes a brake mechanism, which is arranged on both sides of the wheelchair mechanism, and the brake mechanism includes: A pressing member connected to the wheelchair mechanism; The brake member is connected to the pressing member through a linkage member. When the pressing member is actuated, the linkage member drives the brake member to actuate and engage with the second wheel. The brake member contacts the second wheel and achieves braking through friction.

10. The foldable lower limb rehabilitation wheelchair according to claim 1, characterized in that: The surface of the wheelchair mechanism is also provided with a protective layer.

Images