Multifunctional wheelchair
The servo motor and DC motor drive the backrest main frame to rotate, and the electric push rod support upright block realizes the flat lying function of the wheelchair back plate, which solves the problem of insufficient comfort of the wheelchair, and ensures patient safety through the gravity trigger switch and information interactor of the cushion main body plate. The hydraulics and one-way ratchet system are used to improve the stability of the wheelchair on the ramp, achieving the improvement of the comfort and safety of the wheelchair.
Patent Information
- Application Number
- CN202510516103.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2025-08-08
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing multi-function wheelchairs are not comfortable when the patient lies flatly and are difficult to move stably during uphill and downhill.
The servo motor and DC motor are used to drive the backrest body frame to rotate, and the electric push rod supports the upright block to realize the flat lying function of the wheelchair back plate; the gravity trigger switch and information interactor of the cushion main body plate ensure patient safety; the hydraulics and one-way ratchet system are used to improve the stability of the wheelchair on the ramp.
It improves the comfort and safety of wheelchair users, ensures the realization of a flat lying posture, and enhances the stability and control of the wheelchair during uphill and downhill.
Smart Images
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Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of wheelchairs, in particular to a multifunctional wheelchair. Background Art
[0002] A wheelchair is a movable chair with wheels, designed for paraplegics, sick or disabled people as a means of transportation, and is widely used to help elderly patients, disabled people, pregnant women and people with mobility problems to move. It is designed to provide convenient medical services and ensure that patients get the greatest comfort and convenience in their daily environment. At the same time, it can be divided into electric and manual wheelchairs based on the driving mode, and can be divided into standard wheelchairs, nursing wheelchairs, toilet chairs, cerebral palsy chairs, sports wheelchairs, heavy-duty wheelchairs, assisted standing wheelchairs, airplane wheelchairs, beach wheelchairs and other types based on the function. Wheelchairs are not only a means of transportation for people with physical disabilities, but more importantly, they enable them to exercise and participate in social activities with the help of wheelchairs, bringing a lot of convenience and help to their lives. In the current existing technology, a multifunctional wheelchair, when in use, is usually composed of a frame, wheels and leg frames, so that the patient can use his upper arms to drag the wheels of the wheelchair to rotate. The wheels are undoubtedly the key core part of the wheelchair, which is divided into large wheels and small wheels. The large wheels usually shoulder the responsibility of providing the main power. Whether the user pushes it by himself or with the assistance of others, the large wheels play a decisive role. The small wheels mainly play the role of support and steering, making the wheelchair more flexible and free during driving, thereby realizing the function of controlling the movement of the wheelchair, and allowing the patient to use his upper arms to assist his own movement. It is a very good daily assistive tool for people with disabilities.
[0003] When using an existing multifunctional wheelchair, it is extremely important that the wheelchair can assist the patient in lying down because of the patient's comfort. Providing a lying down posture for the patient can well restore the patient's physical strength and improve his mood. Therefore, a multifunctional wheelchair is proposed to address the above problems. Summary of the Invention
[0004] In order to remedy the deficiencies of the prior art and solve at least one technical problem raised in the background art, the present invention provides a multifunctional wheelchair.
[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: A multifunctional wheelchair described in the present invention includes a metal wheelchair body frame, the top of the metal wheelchair body frame is fixedly connected to a seat fixing body plate, the metal wheelchair body frame is fixedly connected to a backrest body block through the seat fixing body plate, a servo motor is installed on the side of the backrest body block, the output end of the servo motor is fixedly connected to the backrest body frame, the backrest body frame is rotatably connected to the inner surface wall of the backrest body block, a DC motor is installed on the side of the backrest body frame, the output end of the DC motor is fixedly connected to a rotating support rod body, the rotating support rod body is rotatably connected to the backrest body frame, an electric push rod is installed on the inner surface wall of the rotating support rod body, the output end of the electric push rod is fixedly connected to a supporting block, auxiliary plates are fixedly connected to the two sides of the backrest body frame, the inner surface wall of the auxiliary plate is fixedly connected to a push handle rod, the backrest body frame is fixedly connected to the wheelchair backboard through the auxiliary plate, the side of the wheelchair backboard is fixedly connected to a neck support, and the side of the wheelchair backboard is fixedly connected to a waist support.
[0006] Preferably, the top of the seat fixed main body plate is fixedly connected to the cushion main body block, the inner bottom wall of the cushion main body block is fixedly connected to the cushion rod, the outer wall of the cushion rod is slidably connected to the cushion main body plate, the cushion main body plate is slidably connected to the inner wall of the cushion main body block, the cushion main body plate is fixedly connected to the trigger spring through the cushion main body block, the inner bottom wall of the cushion main body block is installed with a gravity trigger switch, the inner bottom wall of the cushion main body block is installed with an information exchanger, and the gravity trigger switch is electrically connected to the information exchanger.
[0007] Preferably, a connecting shaft block is fixedly connected to the bottom of the wheelchair metal main frame, both ends of the connecting shaft block are fixedly connected to a central rotating shaft rod, and one end of the central rotating shaft rod is rotatably connected to a first one-way ratchet.
[0008] Preferably, the side of the first one-way ratchet is fixedly connected to the wheelchair main body moving wheel, the side of the wheelchair main body moving wheel is fixedly connected to the handle wheel, and the hydraulic body is installed on both sides of the connecting shaft block.
[0009] Preferably, the output end of the hydraulic machine body is fixedly connected to a sliding plate, the inner wall of the sliding plate is fixedly connected to a sliding rod, and the sliding rod is slidably connected to the outer wall of the central rotating shaft; the outer wall of the sliding rod is slidably connected to a second one-way ratchet, and the second one-way ratchet is fixedly connected to a ratchet spring through the sliding plate.
[0010] Preferably, the top of the seat fixed main body plate is fixedly connected to a leg support body, the inner surface wall of the leg support body is fixedly connected to a damping rod, the outer surface wall of the damping rod is slidably connected to an auxiliary leg support block, and the auxiliary leg support block is fixedly connected to a return spring through the leg support body.
[0011] Preferably, the side of the wheelchair metal main frame is fixedly connected to an auxiliary tripod, a calf support is fixedly connected between the auxiliary tripods, and one end of the auxiliary tripod is fixedly connected to a foot plate.
[0012] Preferably, an auxiliary frame is provided at the bottom of the metal main frame of the wheelchair, and an auxiliary wheel is rotatably connected to the inner surface wall of the auxiliary frame.
[0013] Preferably, a forearm handle is fixedly connected to the top of the wheelchair metal main frame, and a side arm baffle is fixedly connected between the wheelchair metal main frames.
[0014] Beneficial effects of the present invention: The present invention provides a multifunctional wheelchair, which drives the backrest main body frame and the wheelchair backboard to rotate gradually by arranging a servo motor. At the same time, during this process, after the DC motor is started, the rotating support rod main body rotates until the rotating support rod main body is perpendicular to the wheelchair backboard, and until the wheelchair backboard is gradually flattened, it is convenient for the wheelchair user to lay it flat. At the same time, after the wheelchair is flattened as a whole, the electric push rod pushes the support block to contact the ground to support the wheelchair backboard.
[0015] The present invention provides a multifunctional wheelchair. By arranging a seat cushion main body plate, when a patient sits in the wheelchair, the seat cushion main body plate is affected by the patient's own weight, causing the seat cushion main body plate to slide on the outer wall of the seat cushion rod, and then the trigger spring is compressed at this time, and at the same time the seat cushion main body plate abuts against the gravity trigger switch to be triggered. When the patient is affected by the outside world and detaches from the seat, the seat cushion main body plate will be affected by the trigger spring again. At this time, the trigger spring no longer abuts against the gravity trigger switch, and then the gravity trigger switch is triggered, so that the information exchange device remotely sends information to remind the nurse or the patient's family.
[0016] The present invention provides a multifunctional wheelchair. The wheelchair main body moving wheels are arranged so that the wheelchair main body moving wheels can rotate on a central rotating shaft. At the same time, the patient can use the handle wheel to rotate the wheelchair main body moving wheels. When the patient needs to go uphill, the hydraulic device body can be started to push the sliding plate and the sliding rod. At this time, the second one-way ratchet will be meshed with the first one-way ratchet, so that when the wheelchair main body moving wheels rotate in the uphill direction, the first one-way ratchet can push the second one-way ratchet, so that the wheelchair main body moving wheels can rotate freely in the uphill direction. At the same time, when the wheelchair is affected by the slope and rotates in the opposite direction, the ratchet spring will bounce the second one-way ratchet into meshing with the first one-way ratchet, thereby preventing the wheelchair main body moving wheels from reversing. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is an overall stereogram of the present invention; Figure 2 It is a rear view of the present invention; Figure 3 It is a three-dimensional diagram of the main block of the seat cushion of the present invention; Figure 4 is a perspective view of a fixed main body plate of a seat in the present invention; Figure 5 is a three-dimensional diagram of the auxiliary tripod of the present invention; Figure 6 It is a three-dimensional diagram of the connecting shaft block in the present invention; Figure 7 It is an enlarged view of point A in the present invention.
[0018] Legend: 1. Wheelchair metal frame; 2. Forearm handle; 3. Side arm baffle; 4. Auxiliary frame; 5. Auxiliary wheel; 6. Auxiliary footrest; 7. Calf support plate; 8. Footrest; 9. Backrest main body; 10. Servo motor; 11. Backrest main frame; 12. DC motor; 13. Rotating support rod body; 14. Electric push rod; 15. Support block; 16. Auxiliary plate; 17. Push handle rod; 18. Wheelchair backboard; 19. Neck support; 20. Lumbar support; 21. Seat main body; 22. Gravity touch 1. The first and second wheels are the wheelchair, the second one-way ratchet ... first one-way ratchet, the first one-way ratchet, the first one-way ratchet, the first one-way ratchet, the first one-way ratchet, the first one-way ratchet, the first one-way ratchet, the first one-way ratchet, the first one-way ratchet, the first DETAILED DESCRIPTION
[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.
[0020] Specific examples are given below.
[0021] See also Figure 1-Figure 7The present invention provides a multifunctional wheelchair, comprising a wheelchair metal main frame 1, the top of the wheelchair metal main frame 1 is fixedly connected to a seat fixing main body plate 31, the wheelchair metal main frame 1 is fixedly connected to a backrest main body block 9 through the seat fixing main body plate 31, a servo motor 10 is installed on the side of the backrest main body block 9, the output end of the servo motor 10 is fixedly connected to the backrest main frame 11, the backrest main frame 11 is rotatably connected to the inner surface wall of the backrest main body block 9, a DC motor 12 is installed on the side of the backrest main frame 11, the output end of the DC motor 12 is fixedly connected to a rotating support rod main body 13, the rotating support rod main body 13 is rotatably connected to the backrest main frame 11, an electric push rod 14 is installed on the inner surface wall of the rotating support rod main body 13, the output end of the electric push rod 14 is fixedly connected to a supporting block 15, auxiliary plates 16 are fixedly connected to the inner surface wall of the auxiliary plate 16, a pushing handle rod 17 is fixedly connected to the backrest main frame 11 through the auxiliary plate 16, and the side of the wheelchair backboard 18 The surface is fixedly connected with a neck support 19, and the side of the wheelchair backboard 18 is fixedly connected with a waist support 20; during operation, when the patient needs to lie down, the servo motor 10 and the DC motor 12 can be started synchronously, and then the servo motor 10 drives the backrest main frame 11 to be parallel to the ground, so that the patient's posture will gradually approach the lying posture, and at the same time, the DC motor 12 will drive the rotating support rod main body 13 to gradually produce a vertical state with the backrest main frame 11 until the backrest main frame 11 is parallel to the ground. At this time, the rotating support rod main body 13 will also be perpendicular to the ground, and then the electric push rod 14 will be started so that the electric push rod 14 pushes the support block 15 to contact the ground, thereby achieving the function of supporting the wheelchair backboard 18. At the same time, the design of pushing the handle rod 17 can make it convenient for the patient's family and medical staff to push the wheelchair. The design of the neck support 19 can play a role in auxiliary support of the patient's neck. At the same time, the function of the waist support 20 can achieve the function of supporting the patient's waist, thereby improving the patient's comfort.
[0022] Further, such as Figure 3 and Figure 7As shown, the top of the seat fixed main body plate 31 is fixedly connected to the cushion main body block 30, the inner bottom wall of the cushion main body block 30 is fixedly connected to the cushion rod 28, the outer wall of the cushion rod 28 is slidably connected to the cushion main body plate 21, the cushion main body plate 21 is slidably connected to the inner wall of the cushion main body block 30, the cushion main body plate 21 is fixedly connected to the trigger spring 29 through the cushion main body block 30, the inner bottom wall of the cushion main body block 30 is installed with a gravity trigger switch 22, the inner bottom wall of the cushion main body block 30 is installed with an information exchanger 23, and the gravity trigger switch 22 is electrically connected to the information exchanger 23. During operation, when the patient sits on the wheelchair, the patient's own weight will cause the seat cushion main plate 21 to slide on the outer wall of the seat cushion rod 28. At this time, the seat cushion main plate 21 will squeeze the trigger spring 29, so that the trigger spring 29 is always in a compressed state. At this time, the seat cushion main plate 21 will also abut against the top of the gravity trigger switch 22, until the patient is separated from the wheelchair due to external influences. The compressed trigger spring 29 will lift the seat cushion main plate 21, and then the seat cushion main plate 21 will no longer abut against the gravity trigger switch 22. At this time, the gravity trigger switch 22 starts the information exchanger 23, so that the information exchanger 23 remotely contacts the patient's family or medical staff to ensure the patient's personal safety.
[0023] Further, such as Figure 6As shown, the bottom of the wheelchair metal body frame 1 is fixedly connected to a connecting shaft block 32, both ends of the connecting shaft block 32 are fixedly connected to a central rotating shaft rod 33, and one end of the central rotating shaft rod 33 is rotatably connected to a first one-way ratchet 35; the side of the first one-way ratchet 35 is fixedly connected to a wheelchair body moving wheel 34, and the side of the wheelchair body moving wheel 34 is fixedly connected to a handle wheel 40, and a hydraulic press body 41 is installed on both sides of the connecting shaft block 32; the output end of the hydraulic press body 41 is fixedly connected to a sliding plate 36, the inner surface wall of the sliding plate 36 is fixedly connected to a sliding rod 37, and the sliding rod 37 is slidably connected to the outer surface wall of the central rotating shaft rod 33; the outer surface wall of the sliding rod 37 is slidably connected to a second one-way ratchet 39, and the second one-way ratchet 39 is fixedly connected to a ratchet spring 38 through the sliding plate 36. When the wheelchair is in normal use, the main moving wheel 34 of the wheelchair and the first one-way ratchet 35 can rotate freely with the central rotating shaft 33, thereby realizing the forward or backward movement of the wheelchair. At the same time, when the patient needs to go uphill, the hydraulic actuator body 41 can be activated, so that the hydraulic actuator body 41 pushes the sliding rod 37 and the second one-way ratchet 39, thereby making the second one-way ratchet 39 engage with the first one-way ratchet 35. As a result, when the wheelchair moves uphill, the rotation of the first one-way ratchet 35 will push the second one-way ratchet 39 away, thereby compressing the ratchet spring 38. At this time, the ratchet spring 38 will pop out the second one-way ratchet 39 and engage with the first one-way ratchet 35, thereby making the ratchet not affect the one-way rotation of the main moving wheel 34 of the wheelchair. When the wheelchair rotates in the downhill direction, the first one-way ratchet 35 will be abutted and limited by the second one-way ratchet 39, thereby realizing the one-way rotation of the wheelchair and preventing the wheelchair from sliding down.
[0024] Further, such as Figure 7 As shown, the top of the seat fixed main body plate 31 is fixedly connected to the leg support body 24, the inner surface wall of the leg support body 24 is fixedly connected to the damping rod 26, and the outer surface wall of the damping rod 26 is slidably connected to the auxiliary leg support block 25. The auxiliary leg support block 25 is fixedly connected to the return spring 27 through the leg support body 24. During operation, the patient's legs are placed on one side of the auxiliary leg support block 25, and the auxiliary leg support block 25 is then affected by the weight of the patient's legs, causing the auxiliary leg support block 25 to slide on the damping rod 26, which in turn compresses the return spring 27, allowing the auxiliary leg support block 25 to retract to a suitable position, thereby improving the patient's comfort.
[0025] Further, such as Figure 1 As shown, the side of the wheelchair metal main frame 1 is fixedly connected to an auxiliary footrest 6, a calf support plate 7 is fixedly connected between the auxiliary footrest 6, and one end of the auxiliary footrest 6 is fixedly connected to a foot plate 8. When working, the patient's calf can be placed on the calf support plate 7 for support, and the patient's foot can be placed on the top of the auxiliary footrest 6.
[0026] Further, such as Figure 4 As shown, the bottom of the wheelchair's metal main frame 1 is equipped with an auxiliary frame 4, and the inner surface of the auxiliary frame 4 is rotatably connected to the auxiliary wheelchair wheels 5. The top of the wheelchair's metal main frame 1 is fixedly connected to the forearm handle 2, and the side arm baffles 3 are fixedly connected between the wheelchair's metal main frame 1. During operation, the forearm handle 2 is designed to support the patient's arm, providing auxiliary support when the patient is no longer moving the wheelchair.
[0027] Working principle: When the patient needs to lie flat, the servo motor 10 and the DC motor 12 can be started synchronously, and then the servo motor 10 drives the backrest main frame 11 to be parallel to the ground, so that the patient's posture will gradually approach the lying posture, and at the same time the DC motor 12 will drive the rotating support rod main body 13 to gradually produce a vertical state with the backrest main frame 11, until the backrest main frame 11 is parallel to the ground, and the rotating support rod main body 13 at this time will also be perpendicular to the ground, and then the electric push rod 14 will be started, so that the electric push rod 14 pushes the support block 15 to contact the ground, thereby supporting the wheelchair backboard 18, and at the same time, the design of pushing the handle bar 17 can make it convenient for the patient's family members and medical staff to push the wheelchair, and the neck support 1 The design of 9 can play a role in assisting the patient's neck support. At the same time, the lumbar support 20 can support the patient's waist, thereby improving the patient's comfort. When the patient sits on the wheelchair, the patient's own weight will cause the seat cushion main plate 21 to slide on the outer wall of the seat cushion rod 28. At this time, the seat cushion main plate 21 will squeeze the trigger spring 29, so that the trigger spring 29 is always in a compressed state. At this time, the seat cushion main plate 21 will also abut against the top of the gravity trigger switch 22. Until the patient is separated from the wheelchair due to external influences, the compressed trigger spring 29 will lift the seat cushion main plate 21, so that the seat cushion main plate 21 no longer abuts against the gravity trigger switch 22. At this time, the gravity trigger switch 22 starts information interaction. The device 23 enables the information exchanger 23 to remotely contact the patient's family or medical staff to ensure the patient's personal safety. During daily use of the wheelchair, the wheelchair main moving wheel 34 and the first one-way ratchet 35 can rotate freely with the central rotating shaft 33, thereby realizing the forward or backward movement of the wheelchair. At the same time, when the patient needs to go uphill, the hydraulic body 41 can be started, so that the hydraulic body 41 pushes the sliding rod 37 and the second one-way ratchet 39, thereby making the second one-way ratchet 39 and the first one-way ratchet 35 engage with each other, so that when the wheelchair moves uphill, the rotation of the first one-way ratchet 35 will push the second one-way ratchet 39 away, thereby compressing the ratchet spring 38. At this time, the ratchet spring 38 will pop out the second one-way ratchet 39 and engage with it. The first one-way ratchet 35 is spliced, so that the ratchet will not affect the one-way rotation of the wheelchair main moving wheel 34. Then, when the wheelchair rotates in the downhill direction, the first one-way ratchet 35 will be abutted and limited by the second one-way ratchet 39, thereby realizing the one-way rotation of the wheelchair to prevent the wheelchair from sliding down. The patient's legs will be placed on one side of the auxiliary leg support block 25, and the auxiliary leg support block 25 will be affected by the weight of the patient's legs, causing the auxiliary leg support block 25 to slide on the damping rod 26, thereby causing the return spring 27 to be compressed, so that the auxiliary leg support block 25 can be retracted to a suitable position, thereby improving the patient's comfort. The patient's calves can be placed on the calf support plate 7 for support, and the patient's feet can be placed on the top of the auxiliary footrest 6.The design of the forearm handle 2 can support the patient's arm and can play an auxiliary supporting role when the patient is no longer moving the wheelchair.
[0028] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.
Claims
1. A multifunctional wheelchair, comprising a wheelchair metal main frame (1), characterized in that: The top of the wheelchair metal main frame (1) is fixedly connected to a seat fixed main plate (31), and the wheelchair metal main frame (1) is fixedly connected to a backrest main block (9) through the seat fixed main plate (31). A servo motor (10) is installed on the side of the backrest main block (9), and the output end of the servo motor (10) is fixedly connected to the backrest main frame (11). The backrest main frame (11) is rotatably connected to the inner surface wall of the backrest main block (9). A DC motor (12) is installed on the side of the backrest main frame (11), and the output end of the DC motor (12) is fixedly connected to a rotating support rod main body (13). The rotating support rod The main body (13) is rotatably connected to the backrest main frame (11); an electric push rod (14) is installed on the inner surface wall of the rotating support rod main body (13); the output end of the electric push rod (14) is fixedly connected to a support stand (15); auxiliary plates (16) are fixedly connected to both sides of the backrest main frame (11); the inner surface wall of the auxiliary plate (16) is fixedly connected to a push handle rod (17); the backrest main frame (11) is fixedly connected to a wheelchair backboard (18) through the auxiliary plate (16); the side of the wheelchair backboard (18) is fixedly connected to a neck support (19); and the side of the wheelchair backboard (18) is fixedly connected to a waist support (20).
2. A multifunctional wheelchair according to claim 1, characterized in that: The top of the seat fixed main body plate (31) is fixedly connected to a cushion main body block (30), the inner bottom wall of the cushion main body block (30) is fixedly connected to a cushion rod (28), the outer wall of the cushion rod (28) is slidably connected to the cushion main body plate (21), the cushion main body plate (21) is slidably connected to the inner surface wall of the cushion main body block (30), the cushion main body plate (21) is fixedly connected to a trigger spring (29) through the cushion main body block (30), the inner bottom wall of the cushion main body block (30) is installed with a gravity trigger switch (22), the inner bottom wall of the cushion main body block (30) is installed with an information exchanger (23), and the gravity trigger switch (22) is electrically connected to the information exchanger (23).
3. The multifunctional wheelchair according to claim 1, characterized in that: The bottom of the wheelchair metal main frame (1) is fixedly connected to a connecting shaft block (32), both ends of the connecting shaft block (32) are fixedly connected to a central rotating shaft rod (33), and one end of the central rotating shaft rod (33) is rotatably connected to a first one-way ratchet (35).
4. The multifunctional wheelchair according to claim 3, characterized in that: The side of the first one-way ratchet (35) is fixedly connected to a wheelchair main body moving wheel (34), the side of the wheelchair main body moving wheel (34) is fixedly connected to a handle wheel (40), and both sides of the connecting shaft block (32) are installed with a hydraulic body (41).
5. The multifunctional wheelchair according to claim 4, characterized in that: The output end of the hydraulic main body (41) is fixedly connected to a sliding plate (36), the inner surface wall of the sliding plate (36) is fixedly connected to a sliding rod (37), and the sliding rod (37) is slidably connected to the outer surface wall of the central rotating shaft (33); the outer surface wall of the sliding rod (37) is slidably connected to a second one-way ratchet (39), and the second one-way ratchet (39) is fixedly connected to a ratchet spring (38) through the sliding plate (36).
6. The multifunctional wheelchair according to claim 1, characterized in that: The top of the seat fixed main body plate (31) is fixedly connected to a leg support main body (24), the inner surface wall of the leg support main body (24) is fixedly connected to a damping rod (26), the outer surface wall of the damping rod (26) is slidably connected to an auxiliary leg support block (25), and the auxiliary leg support block (25) is fixedly connected to a return spring (27) through the leg support main body (24).
7. The multifunctional wheelchair according to claim 1, characterized in that: An auxiliary foot frame (6) is fixedly connected to the side of the wheelchair metal main frame (1), a calf support plate (7) is fixedly connected between the auxiliary foot frames (6), and one end of the auxiliary foot frame (6) is fixedly connected to a foot plate (8).
8. The multifunctional wheelchair according to claim 1, characterized in that: An auxiliary frame (4) is provided at the bottom of the wheelchair metal main frame (1), and an auxiliary wheel (5) is rotatably connected to the inner surface wall of the auxiliary frame (4).
9. The multifunctional wheelchair according to claim 1, characterized in that: A forearm handle (2) is fixedly connected to the top of the wheelchair metal main frame (1), and a side arm baffle (3) is fixedly connected between the wheelchair metal main frames (1).