Standing posture folding wheelchair for rehabilitation

Abstract

The standing posture folding wheelchair for rehabilitation comprises an upper body supporting assembly, and the upper body supporting assembly comprises a backrest frame, two transmission lead screws, a fixing plate, an adsorption plate, a lifting seat, a supporting transverse rod, two driven gears, an adjusting motor, a driving gear, four connecting rods, an electromagnet and a tension spring. When the wheelchair is switched to the auxiliary standing posture state, an electromagnet is controlled to be powered off, at the moment, an adsorption plate is pulled to be separated from the electromagnet through a tension spring, the adsorption plate drives supporting cross rods, the ends of the supporting cross rods move out of the interior of a lifting base, and the two supporting cross rods can move in the armpit area of a user; the supporting cross rods are arranged on the upper portion of the user to ensure that the supporting cross rods can provide stable and comfortable upper body support for the user, in the standing process of the user, the two supporting cross rods can help the user to keep balance, the burden of the upper body can be effectively relieved, and the user can stand and walk more easily and autonomously.

Description

Technical Field

[0001] The invention relates to a wheelchair, in particular to a standing folding wheelchair for rehabilitation, belonging to the technical field of wheelchairs. Background Art

[0002] The standing wheelchair for rehabilitation is a high-tech assistive device that integrates advanced rehabilitation concepts and humanized design. It not only has the basic riding functions of a traditional wheelchair, allowing users with limited mobility to move easily, but also incorporates innovative standing assist functions, bringing revolutionary changes to users' daily lives and rehabilitation training.

[0003] The standing wheelchair for rehabilitation can safely and smoothly assist the user to achieve the transition from sitting to standing. The standing function not only helps to improve the user's blood circulation, prevent complications such as pressure sores and muscle atrophy that may be caused by long-term sitting, but also enhances the user's self-confidence, improves the quality of life and social participation.

[0004] The known Chinese authorized invention (Announcement No.: CN110013395B) discloses an auxiliary standing wheelchair with variable front and rear wheelbases, which realizes the rearward movement of the front wheels and footrests when the wheelchair seat cushion and backrest are lifted through the linkage of two sets of connecting rod mechanisms. While the auxiliary wheelchair seat cushion is lifted upward, more front space is given up to improve the support of the wheelchair for the patient when standing. At the same time, the front edge of the footrest on the front frame is tilted when sitting, and the front edge height is lowered when standing with the front frame rotating. The footrest is retracted as a whole to the bottom of the seat cushion, which is convenient for the patient to adjust the standing posture, convenient for the user to get on and off the wheelchair, and improves the stability and reliability of the auxiliary standing, making it safer to use; It realizes the transition from sitting to standing posture through the linkage of two sets of connecting rod mechanisms, which can improve the user's blood circulation and prevent complications such as pressure sores and muscle atrophy caused by long-term sitting. However, in actual use, the following problems still exist: Lack of effective support for the user's upper body: When standing, the center of gravity of the human body will move upward, and higher stability requirements are placed on the upper body. However, the above-mentioned standing wheelchairs do not provide sufficient support for the upper body, which may cause the user to feel shaky or lose balance during standing, increasing the risk of falling. For this reason, a standing folding wheelchair for rehabilitation is proposed. Summary of the invention

[0005] The object of the present invention is to provide a standing folding wheelchair for rehabilitation to solve one of the problems raised in the above-mentioned background technology.

[0006] The present invention is implemented by the following technical solutions: A standing folding wheelchair for rehabilitation, comprising an upper body support assembly, wherein the upper body support assembly comprises a backrest frame, two transmission screws, a fixing plate, an adsorption plate, a lifting seat, a supporting crossbar, two driven gears, an adjusting motor, a driving gear, four connecting rods, an electromagnet and a tension spring; The supporting cross bar is slidably connected to the inside of the lifting seat, the adsorption plate is fixedly connected to the rear end of the supporting cross bar, the tension spring is sleeved on the outer side wall of the supporting cross bar, the front ends of the four connecting rods are symmetrically fixedly connected to the rear surface of the lifting seat, the rear end of the connecting rod is fixedly connected to the front surface of the fixing plate, the electromagnet is fixedly connected to the front surface of the fixing plate, the lifting seat is threadedly connected to the outer side walls of the two transmission screws, the two driven gears are symmetrically fixedly connected to the bottom of the outer side walls of the two transmission screws, the driving gear is fixedly connected to the output shaft of the adjusting motor, and the adjusting motor is installed on the lower surface of the backrest frame.

[0007] As a further preferred embodiment of the present technical solution: the position of the electromagnet corresponds to the position of the adsorption plate, one end of the tension spring is fixedly connected to the lifting seat, and the other end of the tension spring is fixedly connected to the adsorption plate.

[0008] As a further preferred embodiment of the present technical solution: the two ends of the two transmission screws are rotatably connected to the inner top wall and the inner bottom wall of the backrest frame respectively, and the outer side wall of the driving gear is meshingly connected to the outer side walls of the two driven gears.

[0009] As a further preferred embodiment of the present technical solution: a sliding groove is provided on the upper surface of the supporting cross bar, shock-absorbing airbags are equidistantly installed on the inner bottom wall of the sliding groove, a sliding seat is slidably connected to the inner side wall of the sliding groove, the lower surface of the sliding seat is in contact with the shock-absorbing airbag, and a contact plate is fixedly connected to the upper surface of the sliding seat, and the size of the contact plate is adapted to the size of the supporting cross bar.

[0010] As a further preferred embodiment of the technical solution: the inner part of the backrest frame is symmetrically fixedly connected to a limiting strip, the lifting seat is slidably connected to the inner part of the backrest frame, limiting grooves are symmetrically provided on both sides of the lifting seat, and the outer side wall of the limiting strip is slidably connected to the inner side wall of the limiting groove.

[0011] As a further preferred embodiment of the technical solution: a support seat is arranged below the backrest frame, an upper surface of the support seat is rotatably connected to an upper electric support rod, and a top end of the upper electric support rod is rotatably connected to the backrest frame.

[0012] As a further preferred embodiment of the technical solution: a main body component is arranged outside the backrest frame, and the main body component includes a base, a seat frame, a leg support frame and two footrests; The front end of the seat frame is rotatably connected to the front part of the upper surface of the base, the top end of the leg support frame is rotatably connected to the top of the front surface of the base, the two foot pedals are symmetrically installed at the bottom of the front surface of the leg support frame, the bottom end of the backrest frame is rotatably connected to the rear end of the seat frame, the upper front surface of the support seat is rotatably connected to the rear end of the seat frame, and the bottom front surface of the support seat is in contact with the seat frame.

[0013] As a further preferred embodiment of the technical solution: two walking wheels are symmetrically installed on both sides of the base, the two walking wheels are connected by a wheel axle, a walking motor is installed inside the base, the walking motor is connected to the wheel axle of the walking wheel through a transmission belt, and two front wheels are symmetrically installed on the front part of the lower surface of the base.

[0014] As a further preferred embodiment of the technical solution: the main body assembly includes two middle electric support rods and a bottom electric support rod; The bottom ends of the two middle electric support rods are symmetrically connected to the inside of the base, the top ends of the middle electric support rods are connected to the seat frame, the bottom ends of the bottom electric support rods are connected to the base, and the top ends of the bottom electric support rods are connected to the leg support frame.

[0015] As a further preferred embodiment of the present technical solution: two armrest frames are symmetrically installed on the upper surface of the seat frame, a control panel is installed on one of the armrest frames, and support pads are fixedly connected to the surfaces of the backrest frame, the seat frame and the leg support frame.

[0016] Advantages of the present invention: 1. When the wheelchair is switched to the auxiliary standing state, the electromagnet is controlled to be powered off. At this time, the adsorption plate is pulled apart from the electromagnet by the tension spring, and the adsorption plate drives the support cross bar. The end of the support cross bar moves out from the inside of the lifting seat. The two support cross bars can be moved in the armpit area of ​​the user to ensure that the support cross bars can provide the user with stable and comfortable upper body support. When the user is standing, the two support cross bars can not only help the user maintain balance, but also effectively reduce the burden on the upper body, so that the user can stand and walk more easily and confidently; 2. The present invention drives the driving gear to rotate by adjusting the motor, and the driving gear drives the two driven gears to rotate synchronously through the teeth, and the two driven gears drive the two transmission screws to rotate, and the transmission screws drive the lifting seat through the threads. At this time, the lifting seat moves up and down along the axial direction of the transmission screw, and the lifting seat drives the supporting cross bar when moving up and down. Then, the user can control the height of the supporting cross bar by adjusting the motor according to his or her height and needs. The height adjustment not only improves the applicability and comfort of the wheelchair, but also ensures that no matter what the height of the user is, he or she can get stable and effective upper body support, thereby ensuring the support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic structural diagram of a standing folding wheelchair for rehabilitation of the present invention; Figure 2 It is a schematic diagram of the structure of the main components of the present invention; Figure 3 It is a schematic diagram of the structure of the upper body support assembly of the present invention; Figure 4 It is a schematic diagram of the connection between the lifting seat and the backrest frame of the present invention; Figure 5 It is a schematic diagram of the connection between the support cross bar and the lifting seat of the present invention; Figure 6 It is a schematic diagram of the supporting crossbar structure of the present invention; Figure 7 It is a schematic diagram of the contact plate structure of the present invention; Figure 8 It is a schematic diagram of the connection between the backrest frame and the seat frame of the present invention; Fig. 9 This is a schematic diagram of the hidden state of the support cross bar of the present invention; Fig.10 It is a schematic diagram of the auxiliary standing posture state of the present invention; Fig.11 It is a schematic diagram of the folded state of the present invention.

[0019] In the figure: 101, upper body support assembly; 11, backrest frame; 12, transmission screw; 13, limit strip; 14, fixing plate; 15, upper electric support rod; 16, support seat; 17, adsorption plate; 18, lifting seat; 19, contact plate; 20, support cross bar; 21, driven gear; 22, adjustment motor; 23, driving gear; 24, connecting rod; 25, electromagnet; 26, sliding seat; 27, shock-absorbing airbag; 28, slide groove; 29, limit groove; 30, tension spring; 301, main body assembly; 31, base; 32, walking wheel; 33, walking motor; 34, seat frame; 35, middle electric support rod; 36, bottom electric support rod; 37, leg support frame; 38, support pad; 39, foot pedal; 40, front wheel; 41, control panel; 42, armrest frame. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0021] Example In the prior art, when standing, the center of gravity of the human body moves upward, and the stability of the upper body is required to be higher. However, the above-mentioned standing wheelchairs do not provide sufficient support for the upper body, which may cause the user to feel shaky or lose balance during standing, increasing the risk of falling. To do this, see Figure 1-Figure 11 The present invention provides a technical solution: a standing folding wheelchair for rehabilitation, comprising an upper body support assembly 101, the upper body support assembly 101 is used to support the upper body of a user, and by stably supporting the upper body of the user, the user can maintain balance and stability in a standing posture. The upper body support assembly 101 greatly makes up for the deficiency of a traditional standing wheelchair in supporting the upper body, and provides a safer and more reliable standing experience for the user; The upper body support component 101 is an adjustable support structure that can fit under the user's armpits to provide support for the user's upper body; The upper body support assembly 101 includes a backrest frame 11, two transmission screws 12, a fixing plate 14, an adsorption plate 17, a lifting seat 18, a support crossbar 20, two driven gears 21, an adjustment motor 22, a driving gear 23, four connecting rods 24, an electromagnet 25 and a tension spring 30; The support cross bar 20 is slidably connected to the inside of the lifting seat 18. The support cross bar 20 can support the user's armpits, thereby lifting the user's upper body, so that the user can maintain balance and stability in a standing posture; The adsorption plate 17 is fixedly connected to the rear end of the supporting cross bar 20, the tension spring 30 is sleeved on the outer wall of the supporting cross bar 20, the front ends of the four connecting rods 24 are symmetrically fixedly connected to the rear surface of the lifting seat 18, the rear ends of the connecting rods 24 are fixedly connected to the front surface of the fixing plate 14, and the electromagnet 25 is fixedly connected to the front surface of the fixing plate 14, and the adsorption plate 17 can be adsorbed and fixed by the electromagnet 25; When the wheelchair is in a standard sitting position, the electromagnet 25 is activated, and the electromagnet 25 uses its magnetic force to tightly attract the adsorption plate 17, thereby causing the adsorption plate 17 to drive the support cross bar 20 to move. Specifically, the support cross bar 20 will slide smoothly inside the lifting seat 18 until its end is completely moved into the internal space of the lifting seat 18, thereby hiding the support cross bar 20. When the user sits comfortably on the wheelchair, the support cross bar 20 is completely hidden, which neither takes up extra space nor causes unnecessary interference or influence on the user, thereby ensuring the comfort and freedom of the user in the sitting position; When the wheelchair needs to switch to the auxiliary standing state, the electromagnet 25 is powered off, the adsorption plate 17 that loses its magnetic force will not be limited in position, and the end of the support cross bar 20 will move out from the inside of the lifting seat 18 under the tension of the tension spring 30. At this time, the two support cross bars 20 can move to the user's armpit area to ensure that the support cross bars 20 can provide the user with stable and comfortable upper body support. During the standing process, the two support cross bars 20 can not only help the user maintain balance, but also effectively reduce the burden on the upper body, so that the user can stand and walk more easily and confidently; The lifting seat 18 is threadedly connected to the outer side walls of the two transmission screws 12, and the two driven gears 21 are symmetrically fixedly connected to the bottom of the outer side walls of the two transmission screws 12. The driving gear 23 is fixedly connected to the output shaft of the adjusting motor 22, and the adjusting motor 22 is installed on the lower surface of the backrest frame 11. When the wheelchair is converted to the auxiliary standing state, the driving gear 23 is driven to rotate by the adjusting motor 22. Since the teeth of the driving gear 23 are tightly engaged with the two driven gears 21, as the driving gear 23 rotates, the two driven gears 21 also rotate synchronously, and the two driven gears 21 rotate synchronously. The gear 21 drives the two transmission screws 12 to rotate, and the transmission screw 12 drives the lifting seat 18 through the thread. At this time, the lifting seat 18 can move up and down along the axial direction of the transmission screw 12. When the lifting seat 18 moves up and down, it drives the supporting cross bar 20. Then, at this time, the user can control the height of the supporting cross bar 20 by adjusting the motor 22 according to his or her height and needs. The height adjustment not only improves the applicability and comfort of the wheelchair, but also ensures that no matter what the height of the user is, he or she can get stable and effective upper body support, so as to perform standing and walking training.

[0022] In this embodiment, specifically: the position of the electromagnet 25 corresponds to the position of the adsorption plate 17, one end of the tension spring 30 is fixedly connected to the lifting seat 18, and the other end of the tension spring 30 is fixedly connected to the adsorption plate 17. The tension spring 30 can provide tension to the support cross bar 20. When the electromagnet 25 is powered off, the tension spring 30 pulls the adsorption plate 17 to separate from the electromagnet 25, and the adsorption plate 17 drives the support cross bar 20, and the end of the support cross bar 20 moves out from the inside of the lifting seat 18, thereby achieving support for the user.

[0023] In this embodiment, specifically: the two ends of the two transmission screws 12 are rotatably connected to the inner top wall and the inner bottom wall of the backrest frame 11 respectively, and the outer side wall of the driving gear 23 is meshedly connected to the outer side walls of the two driven gears 21. Through the cooperation of the driving gear 23 and the two driven gears 21, the two transmission screws 12 can be rotated synchronously, and the two transmission screws 12 jointly drive the lifting seat 18, and the lifting seat 18 drives the supporting cross bar 20. The height position of the supporting cross bar 20 can be adjusted according to the user's height and usage requirements.

[0024] In this embodiment, specifically: a slide groove 28 is provided on the upper surface of the support cross bar 20, and shock-absorbing air bags 27 are equidistantly installed on the inner bottom wall of the slide groove 28, and a sliding seat 26 is slidably connected to the inner side wall of the slide groove 28, and the lower surface of the sliding seat 26 is in contact with the shock-absorbing air bag 27, and the upper surface of the sliding seat 26 is fixedly connected with a contact plate 19, and the size of the contact plate 19 is adapted to the size of the support cross bar 20, and the surface of the contact plate 19 is covered with sponge, thereby improving the comfort of the user during use; When the wheelchair is in the auxiliary standing position, the support crossbar 20 provides support for the contact plate 19, so that the contact plate 19 can fit closely under the user's armpits, and the cushioning effect of the sponge material greatly reduces the pressure and discomfort on the user's skin; By providing the shock-absorbing airbag 27, the protection of the user's armpits can be further enhanced. When the user is walking, the shock-absorbing airbag 27 can effectively absorb and disperse the vibration and impact force from the ground, ensuring that the user can stand or walk more steadily and comfortably.

[0025] In this embodiment, specifically: the limiting strip 13 is symmetrically fixedly connected inside the back frame 11, the lifting seat 18 is slidably connected to the inside of the back frame 11, and the limiting grooves 29 are symmetrically provided on both sides of the lifting seat 18. The outer wall of the limiting strip 13 is slidably connected to the inner wall of the limiting groove 29. Through the cooperation of the limiting strip 13 and the limiting groove 29, the stability of the lifting seat 18 can be further enhanced. When the height position of the supporting cross bar 20 is adjusted, the lifting seat 18 always moves upward or downward along the limiting strip 13.

[0026] In this embodiment, specifically: a support seat 16 is arranged below the backrest frame 11, and the upper surface of the support seat 16 is rotatably connected to an upper electric support rod 15, and the top end of the upper electric support rod 15 is rotatably connected to the backrest frame 11, and the angle of the backrest frame 11 can be adjusted through the upper electric support rod 15.

[0027] In order to solve the problems existing in the prior art, the embodiment of the present invention provides a standing folding wheelchair for rehabilitation, and the above technical solutions are used to solve the problems: When the wheelchair switches to the auxiliary standing state, the electromagnet 25 is powered off. At this time, the adsorption plate 17 is pulled apart from the electromagnet 25 by the tension spring 30, and the adsorption plate 17 drives the support cross bar 20. The end of the support cross bar 20 moves out from the inside of the lifting seat 18. At this time, the two support cross bars 20 can be moved to the user's armpit area to ensure that the support cross bars 20 can provide the user with stable and comfortable upper body support. During the standing process, the two support cross bars 20 can not only help the user maintain balance, but also effectively reduce the burden on the upper body, so that the user can stand and walk more easily and confidently. At the same time, the driving gear 23 is driven to rotate by adjusting the motor 22. The driving gear 23 drives the two driven gears 21 to rotate synchronously through the teeth, and the two driven gears 21 drive the two transmission screws 12 to rotate. The transmission screw 12 drives the lifting seat 18 through the thread. At this time, the lifting seat 18 can move up and down along the axial direction of the transmission screw 12. When the lifting seat 18 moves up and down, it drives the supporting cross bar 20. At this time, the user can control the height of the supporting cross bar 20 by adjusting the motor 22 according to his or her height and needs. The height adjustment not only improves the applicability and comfort of the wheelchair, but also ensures that no matter what the height of the user is, he or she can get stable and effective upper body support, thereby ensuring the support effect.

[0028] In this embodiment, specifically: a main body assembly 301 is disposed outside the backrest frame 11, and the main body assembly 301 includes a base 31, a seat frame 34, a leg support frame 37 and two footrests 39; The front end of the seat frame 34 is rotatably connected to the front part of the upper surface of the base 31, the top end of the leg support frame 37 is rotatably connected to the top of the front surface of the base 31, and two footrests 39 are symmetrically installed on the bottom of the front surface of the leg support frame 37. The bottom end of the backrest frame 11 is rotatably connected to the rear end of the seat frame 34, the upper front surface of the support seat 16 is rotatably connected to the rear end of the seat frame 34, and the bottom front surface of the support seat 16 fits with the seat frame 34. The backrest frame 11, the base 31, the seat frame 34 and the leg support frame 37 together constitute the main structure of the seat, ensuring the comprehensiveness and practicality of the seat function. When the user is in a sitting state, the seat frame 34 is used to support the user's thighs and buttocks, so that the user can maintain a stable and comfortable sitting posture. The backrest frame 11 can support the user's back, and the leg support frame 37 can provide support for the user's calves, ensuring that the user's legs can relax naturally in the sitting state, further improving the overall comfort of the seat. When not in use, the wheelchair can be folded by turning over the backrest frame 11 .

[0029] In this embodiment, specifically: two running wheels 32 are symmetrically installed on both sides of the base 31, and the two running wheels 32 are connected by a wheel axle. A running motor 33 is installed inside the base 31, and the running motor 33 is connected to the wheel axle of the running wheel 32 through a transmission belt. Two front wheels 40 are symmetrically installed on the front part of the lower surface of the base 31. The wheel axle is driven by the running motor 33, and the wheel axle drives the two running wheels 32. In combination with the two front wheels 40, the wheelchair can be driven.

[0030] In this embodiment, specifically: the main body assembly 301 includes two middle electric support rods 35 and a bottom electric support rod 36; The bottom ends of the two middle electric support rods 35 are symmetrically connected to the inside of the base 31, the top ends of the middle electric support rods 35 are connected to the seat frame 34, the bottom ends of the bottom electric support rods 36 are connected to the base 31, and the top ends of the bottom electric support rods 36 are connected to the leg support frame 37; When the wheelchair needs to switch from a conventional sitting position to an auxiliary standing position, the leg support frame 37 is driven by the bottom electric support rod 36 to make the leg support frame 37 fit with the base 31, and then the middle electric support rod 35 drives the seat frame 34 to rotate, and the rear end of the seat frame 34 gradually rises. In this process, the seat frame 34 not only changes its original horizontal posture, but also provides a transitional state for the user to gradually stand up. At the same time, the rise and rotation of the seat frame 34 drives the backrest frame 11 to make corresponding adjustments. The backrest frame 11 gradually tilts as the seat frame 34 rises to adapt to the natural curve of the user's back when standing. Through the telescopic adjustment of the upper electric support rod 15, the backrest frame 11 can reach an angle that is both ergonomic and can provide comfortable support for the user. Through the above actions, the wheelchair is finally successfully switched from a sitting position to an assisted standing position. During this process, the user can not only feel the stable support provided by the wheelchair, but also enjoy the smooth transition brought by the electric support rod, thereby completing the transition from sitting to standing more easily.

[0031] In this embodiment, specifically: two armrest frames 42 are symmetrically installed on the upper surface of the seat frame 34, and a control panel 41 is installed on one armrest frame 42. The surfaces of the backrest frame 11, the seat frame 34 and the leg support frame 37 are all fixedly connected with support pads 38. The support pads 38 are made of latex material and can provide a good support experience for the user. The control panel 41 is provided with a central processor for controlling the upper electric support rod 15, the adjustment motor 22, the electromagnet 25, the travel motor 33, the middle electric support rod 35, and the bottom electric support rod 36; A monitoring camera is installed on the armrest frame 42, which is used to monitor the user's standing state in real time and then send it to the central processor. When the user's forward leaning amplitude is too large and there is a risk of falling, the central processor automatically controls the angle of the backrest frame 11 and the seat frame 34, which specifically includes the following steps: Real-time monitoring: The user's standing image is captured by the monitoring camera, and then the captured image is transmitted to the central processor in real time through the high-speed network. The advanced compression algorithm is used in the transmission process to ensure smooth images and small bandwidth occupation; Intelligent analysis: The central processor has a built-in intelligent analysis module to process and analyze the received monitoring images in real time. Through deep learning algorithms, the processor can accurately identify the user's forward leaning range, posture changes, and potential fall risks; Threshold setting: According to the user's physical condition, age, height and working environment factors, a personalized forward leaning threshold is set. When the user's actual forward leaning exceeds this threshold, the system will trigger an automatic adjustment mechanism; Automatic adjustment: When the central processor detects that the user's forward leaning amplitude exceeds the set threshold, it immediately sends an adjustment instruction to the electric support rods of the backrest frame 11 and the seat frame 34, and the instruction includes the adjustment angle, speed and duration; Actuator response: After receiving the command, the electric support rod quickly starts and adjusts the angle of the backrest frame 11 and the seat frame 34. During the adjustment process, the electric support rod monitors and adjusts the force in real time through the built-in sensor to ensure a smooth and safe adjustment process; Dynamic adjustment: Automatically adjust the angles of the backrest frame 11 and the seat frame 34 according to the user's real-time posture changes. This dynamic adjustment can provide the user with a more fitted and comfortable support, further improving the user's safety and comfort; Multi-level alarm: Different alarm levels are triggered according to the severity of the user's fall risk. Low-level alarms only remind users through sound or light; high-level alarms send emergency notifications to relevant personnel through text messages, APP push or phone calls.

[0032] Working principle or structural principle, when used, When the wheelchair is in a standard sitting position, the electromagnet 25 is activated, and the electromagnet 25 uses its magnetic force to tightly attract the adsorption plate 17, and the adsorption plate 17 drives the support cross bar 20 to move, and the support cross bar 20 slides inside the lifting seat 18, and the end of the support cross bar 20 is completely moved into the internal space of the lifting seat 18, so that the support cross bar 20 is hidden. At this time, when the user sits on the wheelchair, the support cross bar 20 is completely hidden, which neither takes up additional space nor causes any unnecessary interference or influence on the user, thereby ensuring the comfort and freedom of the user in the sitting position, and the wheelchair can be driven by the cooperation of the travel motor 33 and the front wheel 40; When the wheelchair needs to switch to the auxiliary standing state, the electromagnet 25 is powered off. Under the action of the tension spring 30, the adsorption plate 17 is separated from the electromagnet 25, and the adsorption plate 17 drives the support cross bar 20. The end of the support cross bar 20 moves out from the inside of the lifting seat 18. At this time, the two support cross bars 20 can move in the user's armpit area, and the driving gear 23 is driven to rotate by adjusting the motor 22. The driving gear 23 drives the two driven gears 21 to rotate synchronously through the teeth. The two driven gears 21 drive the two transmission screws 12 to rotate, and the transmission screw 12 drives the lifting seat 18 through the thread. At this time, the lifting seat 18 can move up and down along the axial direction of the transmission screw 12. When the lifting seat 18 moves up and down, it drives the support cross bar 20. Then, the user can control the height of the support cross bar 20 by adjusting the motor 22 according to his or her height and needs, ensuring that no matter what the height of the user is, he or she can get stable and effective upper body support. Then, the leg support frame 37 is driven by the bottom electric support rod 36, so that the leg support frame 37 and the bottom The seat 31 fits well, and the middle electric support rod 35 pushes the seat frame 34 to rotate, and the rear end of the seat frame 34 gradually rises. In this process, the seat frame 34 not only changes its original horizontal posture, but also provides a transition state for the user to gradually stand up. At the same time, the rise and rotation of the seat frame 34 drives the backrest frame 11 to make corresponding adjustments. The backrest frame 11 gradually tilts as the seat frame 34 rises to adapt to the natural curvature of the user's back when standing. Through the telescopic adjustment of the upper electric support rod 15, the backrest frame 11 can reach an angle that is both ergonomic and can provide comfortable support for the user, thereby successfully switching the wheelchair from a sitting state to an auxiliary standing state. When the user stands, the contact plate 19 contacts the user's armpit position. By setting a shock-absorbing airbag 27, the protection of the user's armpit can be further enhanced. When the user is walking, the shock-absorbing airbag 27 can effectively absorb and disperse the vibration and impact force from the ground, ensuring that the user can be more stable and comfortable when standing or walking.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A standing folding wheelchair for rehabilitation, characterized in that: The upper body support assembly (101) comprises a backrest frame (11), two transmission screw rods (12), a fixing plate (14), an adsorption plate (17), a lifting seat (18), a support cross bar (20), two driven gears (21), an adjustment motor (22), a driving gear (23), four connecting rods (24), an electromagnet (25) and a tension spring (30); The support cross bar (20) is slidably connected to the inside of the lifting seat (18), the adsorption plate (17) is fixedly connected to the rear end of the support cross bar (20), the tension spring (30) is sleeved on the outer wall of the support cross bar (20), the front ends of the four connecting rods (24) are symmetrically fixedly connected to the rear surface of the lifting seat (18), the rear ends of the connecting rods (24) are fixedly connected to the front surface of the fixing plate (14), the electromagnet (25) is fixedly connected to the front surface of the fixing plate (14), the lifting seat (18) is threadedly connected to the outer walls of the two transmission screws (12), the two driven gears (21) are symmetrically fixedly connected to the bottom of the outer walls of the two transmission screws (12), the driving gear (23) is fixedly connected to the output shaft of the adjustment motor (22), and the adjustment motor (22) is mounted on the lower surface of the backrest frame (11).

2. A standing folding wheelchair for rehabilitation according to claim 1, characterized in that: The position of the electromagnet (25) corresponds to the position of the adsorption plate (17), one end of the tension spring (30) is fixedly connected to the lifting seat (18), and the other end of the tension spring (30) is fixedly connected to the adsorption plate (17).

3. A standing folding wheelchair for rehabilitation according to claim 1, characterized in that: The two ends of the two transmission screw rods (12) are rotatably connected to the inner top wall and the inner bottom wall of the backrest frame (11), respectively, and the outer side wall of the driving gear (23) is meshingly connected to the outer side walls of the two driven gears (21).

4. A standing folding wheelchair for rehabilitation according to claim 1, characterized in that: A slide groove (28) is provided on the upper surface of the support cross bar (20), and shock-absorbing air bags (27) are equidistantly installed on the inner bottom wall of the slide groove (28). A sliding seat (26) is slidably connected to the inner side wall of the slide groove (28), and the lower surface of the sliding seat (26) is in contact with the shock-absorbing air bag (27). A contact plate (19) is fixedly connected to the upper surface of the sliding seat (26), and the size of the contact plate (19) is adapted to the size of the support cross bar (20).

5. A standing folding wheelchair for rehabilitation according to claim 1, characterized in that: The backrest frame (11) is symmetrically fixedly connected to a limit strip (13) inside the backrest frame (11), the lifting seat (18) is slidably connected to the inside of the backrest frame (11), and limit slots (29) are symmetrically provided on both sides of the lifting seat (18), and the outer side wall of the limit strip (13) is slidably connected to the inner side wall of the limit slot (29).

6. A standing folding wheelchair for rehabilitation according to claim 1, characterized in that: A support seat (16) is provided below the backrest frame (11); an upper electric support rod (15) is rotatably connected to the upper surface of the support seat (16); and a top end of the upper electric support rod (15) is rotatably connected to the backrest frame (11).

7. A standing foldable wheelchair for rehabilitation according to claim 6, characterized in that: A main body component (301) is disposed outside the backrest frame (11), and the main body component (301) comprises a base (31), a seat frame (34), a leg support frame (37), and two footrests (39); The front end of the seat frame (34) is rotatably connected to the front portion of the upper surface of the base (31), the top end of the leg support frame (37) is rotatably connected to the top of the front surface of the base (31), the two footrests (39) are symmetrically mounted on the bottom of the front surface of the leg support frame (37), the bottom end of the backrest frame (11) is rotatably connected to the rear end of the seat frame (34), the upper front surface of the support seat (16) is rotatably connected to the rear end of the seat frame (34), and the bottom front surface of the support seat (16) is in contact with the seat frame (34).

8. A standing folding wheelchair for rehabilitation according to claim 7, characterized in that: Two running wheels (32) are symmetrically mounted on both sides of the base (31), the two running wheels (32) are connected via a wheel axle, a running motor (33) is mounted inside the base (31), the running motor (33) is connected to the wheel axle of the running wheels (32) via a transmission belt, and two front wheels (40) are symmetrically mounted on the front portion of the lower surface of the base (31).

9. A standing foldable wheelchair for rehabilitation according to claim 7, characterized in that: The main body assembly (301) comprises two middle electric support rods (35) and a bottom electric support rod (36); The bottom ends of the two middle electric support rods (35) are symmetrically connected to the inside of the base (31), the top ends of the middle electric support rods (35) are connected to the seat frame (34), the bottom ends of the bottom electric support rods (36) are connected to the base (31), and the top ends of the bottom electric support rods (36) are connected to the leg support frame (37).

10. A standing foldable wheelchair for rehabilitation according to claim 9, characterized in that: Two armrest frames (42) are symmetrically mounted on the upper surface of the seat frame (34), a control panel (41) is mounted on one of the armrest frames (42), and support pads (38) are fixedly connected to the surfaces of the backrest frame (11), the seat frame (34) and the leg support frame (37).

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