KR20130107487A - Electric wheelchair capable of self-balancing and link with smart device - Google Patents

Abstract

PURPOSE: An electric wheelchair capable of automatic balancing of a seat angle and linkage with a smart device is provided to be able to comfortably move by alleviating the anxiety of a passenger in the uphill or downhill, and providing the passenger with a secured feeling. CONSTITUTION: An electric wheelchair capable of automatic balancing of a seat angle and linkage with a smart device comprises a seating unit consisting of a chair, armrests, a controller and footrests; a balancing structure consisting of a chair support frame which is a frame formed outside the chair, a left-right balancing rotative connector which fixes the chair to the chair support frame up and down so that the chair is able to rotate to left and right, and a back and front balancing rotative connector which combines the chair support frame to be able to rotate to back and front; a wheel support part consisting of wheel support frames which fix wheels and are connected to the back and front balancing rotative connector to support, and a rotative connector of left and right wheels which has a bearing structure to connect so that the left-right wheel support frame is able to separately rotate; a wheel part consisting of front wheels and rear wheels; a power supply part consisting of a battery; and a driver consisting of a motor.

Description

Electric wheelchair capable of self-balancing and linking smart devices with seat angles {Electric wheelchair capable of self-balancing and link with smart device}

The present invention is connected to the frame for supporting the chair to the electric wheelchair so as to rotate left and right, the frame is connected to the wheel frame so as to rotate left and right again, the center of the weight of the occupant to the lower position to maintain the balance on the electric wheelchair Technology.

As the average life span of human beings is prolonged and the elderly population suffering from chronic or joint diseases increases, the population complaining of difficulty in walking due to the decrease in muscle activity, which is characteristic of the elderly body, is increasing. Accordingly, electric wheelchairs have been developed and widely used for elderly people who are uncomfortable with mobility and those who have difficulty walking even if they are not necessarily disabled or injured.

A general electric wheelchair is composed of a seating seat, a frame supporting the seat, wheels coupled to the frame, a motor driving the wheel, and a battery. The motor driving the wheel may be connected to the wheel by a chain or a belt, or may be provided in the form of a hub motor in the rear wheel. Looking at the “electric wheelchair” structure of Republic of Korea Patent Registration 10-1047342 it can be seen that the general electric wheelchair is composed of a small auxiliary wheel type front wheel and a rear wheel equipped with a hub motor. Since most electric wheel chairs must have a battery under the seat for cushioning, the position of the seat is relatively high, and the road width is convenient when the vehicle width is reduced. Accordingly, when the road surface is not flat or when driving the electric wheelchair on an uphill or downhill, the user may feel anxiety. This is because the center of the body is high and the body shakes due to the road surface condition. As a technology for allowing the occupant to feel less anxiety even when the road surface is inclined, there is a technology of 'wheelchair easy to run on slopes and stairs'. This technology is equipped with a number of additional auxiliary wheels in the conventional four-wheel structure of the front wheel, rear wheel, so that it can run on slopes or stairs. In addition, the Republic of Korea Patent No. 10-1010010 'electric wheelchair seat parallel position automatic adjustment device' is a structure to stand the seat to determine the degree of inclination through the sensor. Anxiety due to tilting may be reduced through the sensor and the mechanical design, but there is a problem that the price of the product may increase significantly according to the failure or operation error due to the electronic configuration, or the difficulty of the manufacturing structure. Therefore, if the seat balance is maintained by the center of gravity of the occupant, not the structure that is balanced by the electronic and mechanical devices, not only the mechanical structure is required but also the operation error by the electronic device can be prevented. will be.

The present invention has been made in order to solve the above problems, and forms a frame on the outside of the seat of the electric wheel chair, connecting the frame and the seat up and down so that the seat is rotated to the left and right, the frame is horizontal to the frame that combines the wheel The purpose of the present invention is to provide a structure of an electric wheelchair that maintains the balance of the occupant's seat naturally and naturally after boarding by allowing the rotation of the central axis of each rotation to be higher than the center of gravity of the occupant. .

In order to solve the above problems, in the present invention, the electric wheelchair capable of automatic balancing of the seat angle and the smart device interworking is a seat portion consisting of a chair 101, an armrest 102, a controller 103, and a footrest 104. (100), the chair support frame 201 which is a frame formed on the outside of the chair, the left and right balance rotation connecting portion 202 for locking the chair up and down to enable the left and right rotation to the chair support frame, chair support frame back and forth Balancing structure (200) consisting of a front and rear balance rotation connecting portion 203 for coupling to enable rotation, a wheel support frame (301) for supporting the wheel and connected to the front and rear balance rotation connecting portion, bearing structure A wheel support part 300 composed of left and right wheel rotation connectors 302 connecting the support frame to be rotated separately, a wheel part 400 composed of front wheels 401 and rear wheels 402, and a battery It is configured to include a driving unit 510 composed of a power supply unit 500 and a motor.

As described above, the present invention allows the seat of the electric wheelchair to rotate left and right and back and forth, and to position the rotating shaft higher than the center of gravity of the occupant, so that when the road surface is uneven or inclined, the center of gravity of the occupant By the self-balancing of the seat by maintaining a constant angle, you can reduce the anxiety of the occupant on the uphill or downhill, and the left and right wheels are combined to rotate each other, even if the road is uneven or obstacles, even if the seat is at an angle By maintaining it, it gives the occupant a sense of stability during the driving of the electric wheelchair is effective to move comfortably.

1 is a perspective view of an electric wheelchair according to the present invention
Figure 2 is an exploded view of the electric wheelchair according to the present invention
Figure 3 is a perspective view of the balance rotary connector according to the present invention
Figure 4 is an example of the left and right tilted road surface use of the electric wheelchair according to the present invention
5 is an uphill and downhill use example of the electric wheelchair according to the present invention
Figure 6 is an example of use when passing the obstacle of the electric wheelchair according to the present invention
7 is an example of using the smart device interlock of the electric wheelchair according to the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an electric wheelchair according to the present invention. The seat portion 100 composed of a chair 101, an armrest 102, a controller 103, and a footrest 104 is similar to a seat of a general electric wheelchair. Chair support frame 201 is provided that is a frame formed on the outside of the chair, and the left and right balance rotation connecting portion 202 is fixed to the chair support frame up and down to enable the left and right rotation of the chair support frame 201 It is provided in the upper and lower ends, respectively. The front and rear balance rotation connecting portion 203 for coupling the chair support frame to the outer center upper end of each side to enable the front and rear rotation to fix the chair support frame 201 combined with the seat portion 100 to be rotatable from the side. The chair support frame 201, the left and right balance rotating connection part 202, and the front and rear balance rotating connection part 203 form the balancing structure 200, so as to balance the front and rear or right and left balance by themselves. In the balancing structure 200, the center where the axes of the left and right balance rotary connectors 202 and the front and rear balance rotary connectors 203 intersect must be sufficiently higher than the center of gravity of the occupant. This is because the center of gravity of the occupant is positioned below the center where these axes intersect, thereby allowing the wheelchair to maintain a constant angle of the seat itself. Wheel support frames 301 for fixing the wheels and being connected to and supported by the front and rear balance rotation connectors are respectively provided to the outside of the chair support frame, and have a bearing structure to rotate the left and right wheel support frames so that the left and right wheel support frames can be rotated separately. The left and right wheel support frames 301 are interconnected through the connecting portion 302. The wheel support frame 301 and the left and right wheel rotation connection part 302 correspond to the wheel support part 300. The wheel unit 400 includes a front wheel 401 which is a free wheel of an auxiliary wheel type and a rear wheel 402 having a driving force by transmitting power. A power supply unit 500 composed of a battery and a driving unit 510 composed of a motor are formed to drive the motor by a power source. In the drawings, the battery is not exposed to the outside under the premise that the battery is configured inside the wheel support frame 301, and the motor is a diagram in which the hub-motor is applied to the inside of the rear wheel. will be.

2 is an exploded view of the electric wheelchair according to the present invention. As shown in the figure, the upper and lower ends of the chair 101 are provided with a left and right balanced rotation connecting portion 202 for connecting in a direction in which the chair support frame 201 and the shape of the chair are formed, and to the left and right outside of the chair support frame 201. The front and rear balance rotation connector 203 connects the wheel support frame 301 and the chair support frame to which the chair is coupled. The left and right wheel support frames 301 are interconnected through the left and right wheel rotation connectors 302 and are connected in a bearing structure so that they can be independently rotated with each other. The left and right wheel support frames can be rotated independently of each other, so that when the road surface is uneven, even if each wheel crosses an obstacle, the other wheels are not affected, and each balance rotation connector 202, 203 balances the chair. Support to catch.

Figure 3 is a perspective view of the balance rotary connector according to the present invention. The left and right balance rotation coupling unit 202 for coupling the chair to the upper and lower ends of the chair can be rotated to balance only when the direction of the upper and lower rotation coupling unit is aligned as shown in the figure. The front and rear balance rotation connecting portion 203 provided on the upper side of the center of the side of the chair support frame 201 also has the same structure on the left and right sides and is arranged in the same direction so that the extension line is matched. By fixing the chair support frame 201 to be rotatable on the left and right, the chair support frame is rotated back and forth to balance. The chair support frame 201 to which the chair is coupled is balanced by the rotary connectors 202 and 203. The point where the extension line of the left and right balance rotary connector 202 meets the extension line of the front and rear balance rotary connector 203 is the weight of the occupant. This can be achieved by placing it vertically above the center. It is based on the principle that the axis of rotation is higher than the center of gravity and the heavy one is lowered by inertia. The wheel support frame for fixing the left and right wheels is connected by the left and right wheel rotation connecting unit 302, and each can be rotated separately so that the left and right sides are mutually twisted.

4 is a view showing an example of the left and right tilted road surface of the electric wheelchair according to the present invention. Without each of the balanced rotating connectors 202 and 203, the chair is fixed in the <a> position and tilts with the car body, but the respective rotating connectors are rotated back and forth and left and right to center the chair support frame under the weight of the occupant. By doing so, it is maintained at the position <b> close to the vertical. Such a structure can prevent an electric wheelchair from overturning sideways on an inclined sideway and causing an injury.

5 is a view showing an uphill and downhill use example of the electric wheelchair according to the present invention. When the chair is positioned at the <a> position in the downhill drawing at the top, the occupant may feel anxious to pour forward. However, the rotatable connecting parts 202 and 203 rotate by the weight of the occupant to maintain the angle of the <b> position so that the occupant can travel without anxiety. In the drawing of the uphill road at the bottom, the occupant may have anxiety that may fall backward when sitting on a chair at the point <a>. However, the electric wheelchair according to the present invention may travel more stably by maintaining the position <b>.

6 is a view showing an example of use when passing the obstacle of the electric wheelchair according to the present invention. If there is an obstacle in front of the left side as shown in the upper part of the figure, the wheel support frame on the right side is in close contact with the ground without being affected while the left front wheel rides over the obstacle, and the rear wheel on the left side is also inaudible. This is due to the characteristic of the left and right wheel connecting frame 302 connecting the left and right wheel support frame to rotate independently of each other. In order to have these characteristics and to be firmly coupled to each other, the overlapping surface must be relatively large, and it is ideal to utilize a bearing structure to be able to rotate with each other. As shown in the figure below, all three wheels, except the front wheels on the left side, maintain their normal positions, and the chair support frame is balanced by the left / right front / rear balance rotation connection so that the occupant can move using a wheelchair with little or no tilt. have.

7 is a view showing an example of the use of the smart device interlock of the electric wheelchair according to the present invention. Smart device cradle 601 that can be mounted on smart devices, such as smart phones, smart device coupling unit 600 consisting of a cable coupling unit 602, a speaker 603 that can couple the cable between the smart device and the wheelchair power unit ) Is provided, and the electric actuator 800 is composed of an electric motor and an operating hinge on the balance rotary connector 202 and 203 and the left and right wheel rotary connector 302. In addition, it is a diagram of a structure further comprising a control unit 700 for controlling the operation of the driving unit 510 and the electric operation unit 800 and connected to the smart device and the power supply unit 500. The control unit includes a controller for operating the electric actuator 800 and a processor for determining various commands. Most smartphones have a built-in gyro sensor to utilize a variety of applications and games, and if you develop an application and install it on your smartphone, you can grasp the state of the road surface through the gyro sensor built into the smart device. It is possible to control the speed of the driving unit 510 and control the balancing operation of the electric actuator 800 through the control unit 700. When the smartphone calculates the inclination of the road surface by using the gyro sensor, the passengers are automatically and safely operated by operating the electric actuators 800 of the respective balanced rotation connectors 202 and 203 and the left and right wheel rotation connectors 302 through the control unit. Ideally the angle of the seated chair can be automatically adjusted. In addition, by outputting the sound output by the smart device through the speaker 603, the state of the plane grasped by the control of the drive unit 510 and the electric actuator 800 and the gyro sensor by the control unit 700, Passengers can immediately see the functions that the controller of the electric wheelchair automatically performs, you can check the voice guidance on the way to the destination by using the navigation function of the smartphone, you can use the multimedia services of various smart devices . Since most of the wheelchair users are elderly people, it is more useful to provide information through a speaker. The use of smart devices such as smartphones is widespread and is expected to continue to expand, adding functionality by continuously upgrading applications that are more convenient for passengers using wheelchairs.

Although a preferred embodiment of the electric wheelchair capable of automatically balancing a seat angle and a smart device interworking according to the present invention was described above, the present invention is not limited thereto, but the scope of the claims and the detailed description of the invention and the accompanying drawings. Various modifications can be made therein and this also belongs to the present invention.

100: seat
101: chair
102: armrest
103: Controller
104: footrest
200: balancing structure
201: Chair Support Frame
202: left and right balanced rotation connection
203: front and rear balanced rotation connection
300: wheel support
301: wheel support frame
302: left and right wheel connection
400: wheel part
401: front wheel
402: rear wheel
500: power supply
510: drive unit
600: smart device combination
601 smart device holder
602 cable connection
603: Speaker
700:
800: electric actuator

Claims (6)

In an electric powered wheelchair,
Seat (100) consisting of a chair 101, armrest 102, controller 103, footrest 104; and
Chair support frame 201, which is a frame formed on the outside of the chair, the left and right balance rotation connecting portion 202 for fixing the chair to the chair support frame up and down to enable left and right rotation, the chair support frame coupled to enable the front and rear rotation Balancing structure 200 consisting of a front and rear balance rotation connecting portion 203 to;
The wheel support unit includes a wheel support frame 301 which fixes the wheel and is connected to and supported by the front and rear balance rotation connection part, and a left and right wheel rotation connection part 302 which has a bearing structure and connects the left and right wheel support frames to be rotated separately. 300); and
A wheel part 400 including a front wheel 401 and a rear wheel 402; and
A power supply unit 500 composed of a battery; And a driving unit 510 configured as a motor. When the user rides in a chair, the balance rotation connecting parts 202 and 203 are positioned higher than the center of the weight, so that the road surface is inclined or irregular to the user's weight. By maintaining balance in the left and right / up and down direction by maintaining the chair angle is constant electric wheelchair capable of interlocking smart devices and interlocking smart devices The method of claim 1,
The motor of the drive unit 510 is an electric wheelchair capable of interlocking with a smart device and balancing smart seats, characterized in that the hub motor (hub-motor) provided in the rear wheel 402. The method of claim 1,
Smart device cradle 601 that can be mounted on smart devices, such as smart phones, smart device coupling unit 600 consisting of a cable coupling unit 602, a speaker 603 that can couple the cable between the smart device and the wheelchair power unit Electric wheelchair capable of interlocking with the smart seat and smart devices, characterized in that it further comprises a) 4. The method according to claim 1 or 3,
The automatic balancing of the seat angle and the smart device interlock is characterized in that it further comprises an electric actuator 800 consisting of an electric motor and an operating hinge in the balance rotary connector (202, 203) and the left and right wheel rotary connector (302) Electric wheelchair available The method according to claim 1 and 3, 4,
Controlling the operation of the driving unit 510 and the electric operation unit 800 is connected to the smart device and the power supply unit 500, further comprising a controller 700 consisting of a controller and a processor, connected to the smart device to the smart device Seat angle, characterized in that by adjusting the speed of the driving unit 510 and controlling the balancing operation of the electric actuator 800 through the control unit 700 by utilizing the information grasping the plane state of the road surface through the built-in gyro sensor Wheelchair with automatic balancing and smart devices The method according to claim 3 to 5,
Through the speaker 603, the sound output by the controller 700, the sound output by the smart device, the road surface state obtained by the control of the driving unit 510 and the electric actuator 800 and the gyro sensor of the smartphone. Electric wheelchair with automatic balancing of seat angles and smart devices

Images