CN110613563A - Wheelchair with adjustable angle of rear wheel - Google Patents

Abstract

The invention relates to a wheelchair whose rear wheel angle can be adjusted, comprising a seat frame, a pedal, a backrest frame, and a handle is arranged on the backrest frame; a chair seat is arranged on the front upper surface of the seat frame, and a In the driving chamber, the left, right, and rear sides of the seat frame are respectively pasted with solar photovoltaic panels, and the left and right sides under the seat frame are respectively equipped with main driving wheels, and the two main driving wheels are connected by a The shafts are connected, and the seat frame is provided with a driving motor that drives the connecting shaft to rotate. The main driving wheel includes a wheel frame and a main tire. There are at least four "L"-shaped metal wheel keels in a circular array in the wheel frame. The main tire is a large Scalloped rubber tires, shock absorbers are provided inside the main tires, rear wheels are provided behind the main drive wheels, and the rear wheels are rotated and installed on the rear support frame, and the seat frame is also equipped with an angle adjustment for adjusting the inclination angle of the rear support frame part. The rear wheel of the present invention can adjust the angle.

Description

Wheelchair with adjustable rear wheels

technical field

The invention belongs to the technical field of wheelchairs, in particular to a wheelchair whose rear wheel angle can be adjusted.

Background technique

Wheelchair is a chair with wheels, which is an important mobile tool for the wounded, sick, and disabled to recover at home, turnaround transportation, medical treatment, and outing activities. It is convenient for family members to move and take care of patients, and enables patients to exercise and participate in social activities with the help of wheelchairs. Chinese patent CN208808882U discloses "a wheelchair with rescue function", which includes a bracket, a large wheel and a steering wheel; a seat board is arranged above the bracket, and a gravity sensor is arranged in the seat board; the bracket is connected and fixed on the seat board. A hand bracket is connected, and a control box is fixedly connected to the hand bracket; the left side of the bracket is vertically fixedly connected with a backboard; the left side of the backboard is fixedly connected with a warning light and a buzzer, and the warning light and a buzzer The device is electrically connected to the mobile power supply. However, conventional wheelchairs often have disadvantages such as poor stability when moving on uneven ground, difficulty in adjusting the angle of the wheelchair body, and inconvenience in charging.

Therefore, based on these problems, it is of great practical significance to provide a wheelchair whose rear wheels can adjust the angle.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a wheelchair whose rear wheel can adjust the angle.

The present invention adopts following technical scheme to realize:

The wheelchair whose rear wheel can adjust the angle includes a seat frame, a footrest, and a backrest frame. The backrest frame is provided with a handle; chamber, the left, right, and rear sides of the seat frame are respectively pasted with solar photovoltaic panels, and the left and right sides below the seat frame are respectively provided with main driving wheels. The connecting shaft is connected to each other through the connecting shaft, and the connecting shaft is rotatably installed on the lower part of the seat frame. The driving motor for driving the connecting shaft to rotate is provided on the seat frame. There are at least four "L" shaped metal wheel keels in the inner ring array, the main tire is a large tooth mark rubber tire, the main tire is provided with a shock absorber, and the rear of the main driving wheel is provided with a rear wheel , the rear wheel is rotatably mounted on the rear support frame, the upper end of the rear support frame is rotatably mounted on the side wall of the seat frame through a pin shaft, and the seat frame is also provided with an angle for adjusting the inclination angle of the rear support frame Adjustment parts.

Preferably, the rear wheels are rubber tires with small tooth marks.

Preferably, the angle adjustment part includes a plurality of first screw holes symmetrically opened on the left and right side walls of the drive chamber, second screw holes opened on the rear support frame, and locked in the first screw holes, the second screw holes For the locking bolt on the hole, a plurality of the first screw holes are arranged in an arc shape, and the distance between each of the first screw holes and the pin shaft is equal.

Further preferably, the angle adjustment component includes arc-shaped chute symmetrically opened on the left and right side walls of the drive chamber, pulleys slidingly engaged in the arc-shaped chute, one end of the two pulleys close to each other through a connecting rod connected, one end far away from each other is fixedly connected to the rear support frame, and the first electric telescopic rod for driving the pulley to slide along the arc chute is arranged in the drive chamber, and the free end of the piston rod of the first electric telescopic rod is hinged At the middle end of the connecting rod, the other end is hinged on the front wall of the drive chamber.

Further preferably, the lower end of the back frame is rotatably connected to the seat frame through a pin shaft, and the back frame is connected to the seat frame through a second electric telescopic rod, and the upper and lower ends of the second electric telescopic rod are respectively connected to the The backrest frame and the seat frame are hinged.

Further preferably, a gyroscope is provided in the seat frame, a control button is provided on one side of the seat frame, a control box is provided at the rear of the seat frame, and the control box is provided in the main control box. chip, battery charge controller, battery, the input end of the battery charge controller is connected to the solar photovoltaic panel, and the output end is connected to the battery, the battery, gyroscope, control button, drive motor, first electric telescopic rod 1. The second electric telescopic rods are all connected to the main control chip, and the storage battery supplies power to the gyroscope, the control button, the driving motor, the first electric telescopic rod and the second electric telescopic rod through the main control chip.

Preferably, the solar photovoltaic cell panel is a polycrystalline silicon photovoltaic cell panel.

Advantage and positive effect of the present invention are:

1. In the present invention, the left, right, and rear sides of the seat frame are respectively attached with solar photovoltaic panels, and the solar photovoltaic panels are used to collect solar energy in the environment and convert it into electrical energy to reduce emissions and achieve energy saving As a result, solar photovoltaic panels are installed on three sides of the wheelchair to absorb light energy from different angles and bring environmentally friendly electricity to the wheelchair.

2. In the present invention, the main driving wheel includes a wheel frame and a main tire. At least four "L" shaped metal wheel keels are arranged in an annular array in the wheel frame, the main tire is a rubber tire with large tooth marks, and the "L" shaped metal sheet The wheel keel is made step-by-step for wheelchairs to go up the steps, and the main tire is wrapped with large tooth-mark rubber tires to increase shock absorption and anti-skid functions.

3. In the present invention, a rear wheel is provided behind the main driving wheel, and the user can adjust the angle of inclination of the rear support frame and the rear wheel through the angle adjustment component, so that the wheelchair can adjust the angle at any time.

4. In the present invention, the inclination angle of the rear support frame and the rear wheel can be indirectly adjusted through the first electric telescopic rod, so that the wheelchair can adjust the angle at any time. It keeps the balance and does not roll over, and it is also convenient for the wheelchair to go up and down the steps.

5. In the present invention, the angle between the backrest frame and the seat frame can be adjusted according to the needs of the user, which is convenient to operate, saves trouble and effort, and improves the comfort of the user.

Description of drawings

The technical solutions of the present invention will be described in further detail below in conjunction with the drawings and embodiments, but it should be known that these drawings are only designed for the purpose of explanation, and therefore are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are only intended to conceptually illustrate the architectural configurations described herein and are not necessarily drawn to scale.

Fig. 1 is the front view structural representation of embodiment 1;

Fig. 2 is a schematic diagram of the front view of the rear wheel in Fig. 1 when the angle is adjusted;

Fig. 3 is the front view structural representation of embodiment 2;

Fig. 4 is a schematic diagram of the longitudinal sectional structure of Fig. 3;

Fig. 5 is a schematic diagram of the cross-sectional structure of Fig. 3 along the A-A plane;

Fig. 6 is a schematic diagram of the cross-sectional structure of Fig. 3 along the B-B plane;

Fig. 7 is a schematic diagram of the front view of the rear wheel in Fig. 3 when the angle is adjusted;

Fig. 8 is a schematic diagram of the longitudinal sectional structure of Fig. 7;

Fig. 9 is a front view structural schematic diagram of embodiment 3;

Fig. 10 is a schematic diagram of the longitudinal sectional structure of Fig. 9;

Fig. 11 is a schematic diagram of the front view of the backrest frame in Fig. 10 when the angle is adjusted;

Fig. 12 is a block diagram of the control system of the third embodiment.

In the figure: 1. Seat frame, 2. Pedal, 3. Backrest frame, 4. Handle, 5. Chair seat, 6. Drive chamber, 7. Solar photovoltaic panel, 8. Connecting shaft, 9. Wheel Frame, 10. Main tire, 11. "L" shaped metal wheel keel, 12. Rear wheel, 13. Rear support frame, 14. Pin shaft, 15. First screw hole, 16. Locking bolt, 17. Arc Chute, 18. pulley, 19. connecting rod, 20. the first electric telescopic rod, 21. control button, 22. control box, 23, the second electric telescopic rod.

Detailed ways

First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of examples, but all descriptions are only for illustration, and should not be construed as forming any limitation on the present invention . In addition, any single technical feature described or implied in each embodiment mentioned herein, or any single technical feature shown or implied in each drawing, can still be described in these technical features (or their equivalents) ) to continue any combination or deletion, so as to obtain more other embodiments of the present invention that may not be directly mentioned herein. In addition, for the sake of simplifying the drawings, the same or similar technical features may only be marked in one place in the same drawing.

In the present invention, terms such as "installation", "installation", "connection", "fixation" and "rotation connection" should be interpreted in a broad sense unless otherwise clearly specified and limited, for example, it may be a fixed connection, or It can be a detachable connection or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary; it can be the internal communication of two components or the interaction relationship between two components Unless otherwise clearly defined, those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations. The present invention will be specifically described below in conjunction with FIGS. 1-12 .

The technical solutions of the present invention will be further described in detail below in conjunction with the drawings and embodiments.

Example 1

As shown in Figures 1 and 2, the wheelchair whose rear wheel can adjust the angle includes a seat frame 1, a pedal 2, and a back frame 3, and the back frame 3 is provided with a handle 4; the front of the seat frame 1 The upper surface of the upper part is provided with a seat 5, and the lower surface of the rear part is provided with a drive chamber 6. The left, right and rear sides of the seat frame 1 are respectively pasted with solar photovoltaic panels 7. The left and right sides of the main drive wheel are respectively provided with main drive wheels, and the two main drive wheels are connected by a connecting shaft 8. The connecting shaft 8 is rotatably mounted on the lower part of the seat frame 1, and the seat frame 1 is provided with a driving wheel. The driving motor that connects the shaft 9 to rotate, the main driving wheel includes a wheel frame 9 and a main tire 10, and the annular array type in the wheel frame 9 is provided with at least four "L" shaped metal wheel keels 11, and the main tire 10 It is a rubber tire with large tooth marks. The main tire 10 is provided with a shock absorber, and the rear wheel 12 is provided behind the main driving wheel. The rear wheel 12 is rotatably mounted on a rear support frame 13, and the rear support The upper end of the frame 13 is rotatably mounted on the side wall of the seat frame 1 through a pin shaft 14, and the seat frame 1 is also provided with an angle adjusting part for adjusting the inclination angle of the rear support frame 13.

Working principle: In the present invention, a chair seat 5 is provided on the upper surface of the front part of the seat frame 1, and the user can sit in the seat 5, and the left, right, and rear sides of the seat frame 1 are respectively pasted with solar photovoltaic panels. Battery panels 7 and solar photovoltaic panels 7 are used to collect solar energy in the environment and convert it into electrical energy, reduce emissions, and achieve energy-saving effects. Solar photovoltaic panels 7 are installed on three sides of the wheelchair to absorb light energy from different angles and bring energy to the wheelchair. To provide environmental protection electric energy; the left and right sides below the seat frame 1 are respectively provided with main driving wheels, and the two main driving wheels are connected through the connecting shaft 8, and the seat frame 1 is provided with a driving motor that drives the connecting shaft 9 to rotate , drive the motor to control the rotation of the main driving wheel, and then push the wheelchair to move; the main driving wheel includes a wheel frame 9, a main tire 10, and the annular array in the wheel frame 9 is provided with at least four "L" shaped metal wheel keels 11, and the main tire 10 is the rubber tire with large tooth marks, and the main tire 10 is provided with a shock absorber, and four "L" shaped metal sheets are used to make the wheel keel 11, and the steps are processed step by step for the wheelchair, and the main tire 10 is wrapped with the rubber tire with large tooth marks. Add shock absorbing and anti-skid functions; the rear of the main drive wheel is provided with a rear wheel 12, the rear wheel 12 is rotatably mounted on the rear support frame 13, and the upper end of the rear support frame 13 is rotatably mounted on the side wall of the seat frame 1 through the pin shaft 14 , the user can adjust the inclination angle of the rear support frame 13 through the angle adjustment parts, the user can manually adjust the angle of the rear wheel 12 at any time, so that the wheelchair can adjust the angle at any time, and the rear wheel 12 can also actively adjust the angle when encountering an uneven ground to keep the wheelchair in balance. The rollover is also convenient for the wheelchair to go up and down the steps.

Furthermore, it can also be considered in the present invention that the rear wheel 12 is a rubber tire with small tooth marks. Add anti-skid function.

Furthermore, it can also be considered in the present invention that the angle adjustment component includes a plurality of first screw holes 15 symmetrically opened on the left and right side walls of the driving chamber 6, and second screw holes 15 opened on the rear support frame 13. hole, and locking bolts 16 locked on the first screw hole 15 and the second screw hole, a plurality of the first screw holes 15 are arranged in an arc shape, and each of the first screw holes 15 is far from the pin shaft 14 are equally spaced. The inclination angle of the rear support frame 13 can be adjusted through the angle adjustment parts, and the user manually adjusts the locking bolt 16 at any time to lock between the first screw hole 15 and the second screw hole at a suitable position, and then adjusts the rear support frame 13 and the rear wheel. 12 degrees of inclination, so that the wheelchair can adjust the angle at any time.

Example 2

As shown in Figures 3-8, the angle adjustment component includes arc-shaped chute 17 symmetrically opened on the left and right side walls of the drive chamber 6, and a pulley 18 slidingly engaged in the arc-shaped chute 17. One end of the pulleys 18 that is close to each other is connected by a connecting rod 19, and one end that is far away from each other is fixedly connected to the rear support frame 13. The first electric telescopic rod that drives the pulley 18 to slide along the arc chute 17 is provided in the drive chamber 6 20. The free end of the piston rod of the first electric telescopic rod 20 is hinged to the middle end of the connecting rod 19, and the other end is hinged to the front wall of the driving chamber 6. The angle of inclination of the rear support frame 13 can be adjusted through the angle adjustment part, and the user can make the first electric telescopic rod 20 stretch or shorten by pressing the control button that controls the extension or shortening of the first electric telescopic rod 20. The free end of the piston rod of the electric telescopic rod 20 is hinged to the middle end of the connecting rod 19. When the first electric telescopic rod 20 is stretched, the first electric telescopic rod 20 can drive the pulley 18 along the arc chute 17 toward the wheelchair. Slide to the right, so that the rear support frame 13 rotates in a circle with the pin shaft 14, and then the angle between the rear support frame 13 and the vertical direction increases accordingly. On the contrary, when the first electric telescopic rod 20 shortens , the first electric telescopic rod 20 can drive the angle between the rear support frame 13 and the vertical direction to reduce, and the angle of inclination of the rear support frame 13 and the rear wheel 12 can be indirectly adjusted through the first electric telescopic rod, so that the wheelchair can be adjusted at any time. Adjust the angle, easy to operate, save trouble and effort.

Example 3

As shown in Figure 9-12, the lower end of the backrest frame is rotatably connected to the seat frame through a pin shaft, and the backrest frame and the seat frame are connected through a second electric telescopic rod. The upper and lower ends are respectively hinged with the back frame and the seat frame. The user presses the control button that controls the extension or shortening of the second electric telescopic rod, so that the second electric telescopic rod can be extended or shortened, and the backrest frame is driven to rotate in a circle around the pin shaft, and then the backrest can be adjusted according to the user's needs The included angle between the frame and the seat frame is convenient to operate, saves trouble and labor, and improves the comfort of users.

Further speaking, it can also be considered in the present invention that a gyroscope is arranged inside the seat frame 1, a control button 21 is arranged on one side of the seat frame 1, and a control button 21 is arranged at the rear of the seat frame 1. There is a control box 22, the control box 22 is located in the main control chip, the battery charge controller, and the battery, the input end of the battery charge controller is connected with the solar photovoltaic panel 7, and its output end is connected with the battery. The accumulator, gyroscope, control button, drive motor, first electric telescopic rod, and second electric telescopic rod are all connected to the main control chip, and the battery supplies power to the gyroscope, control button, drive motor, first electric telescopic rod, The second electric telescopic rod is powered.

Furthermore, it can also be considered in the present invention that the solar photovoltaic cell panel 7 is a polysilicon photovoltaic cell panel.

The seat frame 1 is designed to install a gyroscope so that the wheelchair can maintain a horizontal state at any time, making the user's riding experience more comfortable. The solar photovoltaic panel 7 uses polycrystalline silicon photovoltaic panels to collect and convert solar energy in the environment For electric energy, it can reduce the dependence on electric energy, reduce emissions at the same time, and achieve the effect of environmental protection and energy saving. The current passes through the battery charging controller and then enters the battery for storage. The model of the battery charging controller is SMP40A. The battery board 7 is connected, and its output terminal is connected with the battery. The battery charging controller is used to protect the battery. When the battery is full, the current is cut off to prevent damage. 1. The second electric telescopic rod supplies power. The main control chip is a control chip of the model STC12C5206AD. The input end of the main control chip is connected to the gyroscope, and the output end is connected to the drive motor. The gyroscope is used to detect the posture change of the seat frame 1, and The signal is transmitted to the main control chip. The model of the gyroscope is a six-axis digital gyroscope of MPU-6050. The main control chip can control the operation status of the drive motor, the first electric telescopic rod, and the second electric telescopic rod. The model of the drive motor is BL2238, the model of the electric telescopic rod is TGA-100.

It should be noted that the battery charging controller, main control chip, gyroscope, drive motor, and electric telescopic rod used in this device have specific structures, working principles, and circuit structures that are all prior art, so they will not be described in detail.

To sum up, the present invention provides a wheelchair whose rear wheel angle can be adjusted.

The above embodiments have described the present invention in detail, but the content described is only a preferred embodiment of the present invention, and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention.

Claims (7)

1. The utility model provides a wheelchair that rear wheel can angle regulation, includes seat support frame, running-board, back frame, be equipped with the handle on the back frame, its characterized in that:

the solar chair comprises a chair seat frame, a chair seat, a driving cavity, a solar photovoltaic cell panel, a driving shaft, a driving motor, a rear wheel, a shock absorber, a rear wheel, a rear support frame, a hinge pin, a driving shaft, a connecting shaft, a driving motor, a driving wheel, a main tire, a rear wheel, a rear support frame, a hinge pin, a connecting shaft, a driving motor, a driving shaft, a driving motor and a driving shaft, wherein the driving shaft is arranged on the upper surface of the front part of the chair seat frame, the chair seat frame is also provided with an angle adjusting part for adjusting the inclination angle of the rear supporting frame.

2. The wheelchair of claim 1 in which the rear wheels are angularly adjustable: the rear wheel is a small tooth trace rubber tire.

3. The wheelchair of claim 1 in which the rear wheels are angularly adjustable: the angle adjusting component comprises a plurality of first screw holes symmetrically formed in the left side wall and the right side wall of the driving cavity, a second screw hole formed in the rear support frame and locking bolts locked on the first screw holes and the second screw holes, the first screw holes are arranged in a circular arc shape, and the distance between each first screw hole and the pin shaft is equal.

4. The wheelchair of claim 1 in which the rear wheels are angularly adjustable: the angle adjusting part comprises arc-shaped sliding grooves symmetrically arranged on left and right side walls of the driving cavity and pulleys symmetrically clamped in the arc-shaped sliding grooves, the two pulleys are connected at one end close to each other through a connecting rod, one end far away from each other is fixedly connected with the rear supporting frame, a first electric telescopic rod driving the pulleys to slide along the arc-shaped sliding grooves is arranged in the driving cavity, the free end of a piston rod of the first electric telescopic rod is hinged to the middle end of the connecting rod, and the other end of the piston rod is hinged to the front wall of the driving cavity.

5. The wheelchair of claim 4 in which the rear wheels are angularly adjustable: the lower end of the backrest frame is rotationally connected with the seat frame through a pin shaft, the backrest frame is connected with the seat frame through a second electric telescopic rod, and the upper end and the lower end of the second electric telescopic rod are respectively hinged with the backrest frame and the seat frame.

6. The wheelchair of claim 5 in which the rear wheels are angularly adjustable: be equipped with the gyroscope in the seat support frame, one side of seat support frame is equipped with a plurality of control button, the rear portion of seat support frame is equipped with the control box, locate main control chip, battery charge controller, battery in the control box, battery charge controller's input and solar photovoltaic cell panel are connected, and its output is connected with the battery, gyroscope, control button, CD-ROM drive motor, first electric telescopic handle, second electric telescopic handle all link to each other with main control chip, and the battery supplies power for gyroscope, control button, CD-ROM drive motor, first electric telescopic handle, second electric telescopic handle through main control chip.

7. The wheelchair of claim 1 in which the rear wheels are angularly adjustable: the solar photovoltaic cell panel is a polycrystalline silicon photovoltaic cell panel.