KR20070033543A - Multi-function wheel chair - Google Patents

Abstract

A multi-functional wheel chair is provided to comfortably use the wheel chair by manual or automatic operations through an electric moving member detachably installed on the wheel chair. The multi-functional wheel chair includes a seat fixing frame(13) installed on both upper portions of at least two foldable links(12) formed between both lateral frames(11) and a seat(2) installed on the seat fixing frame for moving vertically by user's manipulation. An electric moving member(4) drives left and right wheels(15,16) according to a rotation of a drive roller by driving a motor, and the drive rollers are detachably connected to the left/right wheels of the wheel chair through a connecting member at a grip pipe of the wheel chair. A left/right regulator(5) is installed on one portion of the wheel chair for regulating the electric moving member.

Description

Multi-function Wheelchair {Multi-function wheel chair}

1 is a perspective view of the multifunctional wheelchair according to the present invention viewed from the rear;

Figure 2 is a view for explaining the connecting means of the transmission means shown in FIG.

3 is a view for explaining the transmission means shown in FIG.

Figure 4 is a block diagram for explaining the electrical configuration of the transmission means according to the invention.

5 is a perspective view of a remote controller according to the present invention.

6 is a block diagram illustrating an electrical configuration of a remote controller according to the present invention.

7 is a view for explaining the lifting means according to the present invention.

8 is an enlarged view of a portion A shown in FIG. 1;

9 and 10 are views for explaining the configuration of a conventional wheelchair.

<Explanation of symbols for the main parts of the drawings>

1: wheelchair

2: seat

21: base plate 22: guide means

23 lifting means 24 seat fixing plate

25: seat 26: connection bracket

27: rotation drive means

3: connection means

31: bolt 32: connecting plate

33: nut 34: coupling plate

4: Electric means

41 case 42 printed circuit board

43,44: Left / Right Wheel Drive Motor 45,46: Left / Right Wheel Drive Roller

5: left / right wheel adjuster

6: remote controller

61,62: left / right wheel controller 63: wireless communication unit

64: microcomputer 65: liquid crystal display

The present invention relates to a wheelchair, and more particularly, to remotely control the driving of a wheelchair located in a place that can be visually confirmed through wireless communication with the electric device as well as using the wheelchair manually or automatically through a removable device to the wheelchair. It is about multifunctional wheelchair which can do it.

In order to enable people with disabilities to participate independently in production and social activities, various assistive devices are needed to enable people with disabilities to adapt their lifestyles without disabilities. The most used among them is the wheelchair which plays many roles as a means of transportation for the disabled.

As is well known, a wheelchair (wheel chair) is a chair with a wheel, which is typically used by a patient or a disabled person who is inconvenient to move, and the movement is performed by the user turning the wheel by hand. In addition, the wheelchair can be folded when the vehicle is boarded so that the vehicle can be mounted.

However, such a conventional wheelchair has an inconvenience due to the manual movement of the wheelchair itself, space constraints on the movement path, and low eye level life according to the height of the wheelchair as described above.

Recently, an electric wheelchair moved by the rotational force of the electric motor has been proposed. Such electric wheelchairs, as well as electric driving, climbs the stairs, and provides various functions to match the eye height when talking with the general public, thereby greatly assisting users using the wheelchair.

However, these height-adjustable wheelchairs are considerably more expensive than manual wheelchairs, and are difficult to be purchased by hospitals or people with disabilities.

In order to solve the height problem of one of these problems, there is a patent application 2004-105432 filed by the present applicant.

Wheelchairs according to this technology is a seat fixture 130 is provided in the longitudinal direction on both sides of the pair of one or more folding links 120 provided between the two sides frame 110, as shown in Figures 9 and 10 A wheelchair frame 100 and a base plate 210 having both ends detachably fixed to the seat holder 130 and the base plate 210 are provided on the guide means 300 and the lifting means. The seat 200 including the seat 220 which is elevated through the 400 and the power supply means 500 that is detachably provided between the two sides frame 110 to supply power to the lifting means 400 It is included.

In addition, the guide means 300 is a plurality of vertical tubes 310 protruding downwardly around the base plate 210 and protruding fixed to the bottom surface of the sheet 220 to be able to lift and lower the vertical tube 310. It consists of a plurality of guide shafts 320 to be inserted.

In addition, the elevating means 400 is a spiral shaft 410 through which the upper end is rotatably mounted on the bottom surface of the seat 220, and a support plate fixed to the lower portion of the base plate 210. It is provided on the upper surface of the 420 is composed of a rotation drive means 430 for rotating and lifting the spiral shaft 410.

The rotation drive means 430 rotates the worm wheel 432 by a worm wheel 432 including a tab hole 431 through which the spiral shaft 410 is fastened, and the motor 433 drives the spiral. It consists of a worm gear 434 which raises and lowers the shaft 410.

According to such a configuration, the wheelchair according to this technology is capable of adjusting the height of the seat on which the user sits by the lifting means by operating the lifting means by driving the rotation driving means constituting the lifting means according to the use state.

In particular, as the seat is supported and lifted by the guide means when the seat is lifted or lowered, the user's load received by the lift means is distributed through the guide means, so that the seat is lifted more stably without being biased.

However, the wheelchair also has a problem of providing a significant burden and inconvenience when the user moves the wheelchair by rolling the handle wheel by hand.

In particular, the wheelchair is moved by manual operation, and even if the wheelchair is located at a certain distance away from the bed, the patient or the user who is unable to move by their own power has no help from the caregiver. There is a problem that can not use the wheelchair until.

In addition, since the elevating means for elevating the seat is a kind of screw type consisting of a worm wheel and a worm gear, there is a problem in that noise is generated during elevating driving to damage others.

The present invention has been invented to solve the above problems, an object of the present invention is to provide a multifunctional wheelchair which can be operated by the user more comfortable by manually or automatically switch the wheelchair through a removable device to the wheelchair. .

In addition, the purpose of the present invention is to provide a multifunctional wheelchair that can be easily used without the help of a caregiver by remotely controlling a wheelchair located in a place that can be visually checked through a wireless communication with the electric device.

Furthermore, an object of the present invention is to provide a multifunctional wheelchair which can reduce the noise generated when the wheelchair is driven up and down.

It is also an object of the present invention to provide a multifunctional wheelchair that can be easily used by moving a wheelchair located in a place where it is impossible to check with the naked eye using surrounding image information provided from the wheelchair.

Multifunctional wheelchair according to a preferred embodiment of the present invention for achieving the above object is a multifunctional wheelchair is separable to the seat fixture is provided in the longitudinal direction on the upper sides of the pair of one or more folding links provided between the two sides of the frame. A wheelchair having a seat fixed and vertically elevated according to a user's operation, wherein both driving rollers are detachably mounted so as to be in contact with the left and right wheels of the wheelchair through a connecting means to a handle pipe of the wheelchair. A transmission means for driving the left / right wheels of the wheelchair by rotation of the driving roller according to the invention; It is provided on one side of the wheelchair, characterized in that it comprises a left / right wheel adjuster for manipulating the drive of the power transmission means.

According to the configuration as described above, the multifunctional wheelchair according to the present invention is mounted on the wheelchair so that the power transmission means is detachable, so that the user can operate the wheelchair more comfortably by manually or automatically switching the wheelchair through the power transmission means.

According to an additional embodiment of the present invention, the multifunctional wheelchair according to the present invention includes a wireless communication unit for transmitting and receiving data through wireless communication, and a wheelchair adjustment signal received from the wireless communication unit in the printed circuit board constituting the electric power means. A microcomputer for outputting a driving control signal to the left / right motor driving unit is further mounted, and the multifunctional wheelchair further includes a remote controller for adjusting left / right wheel driving of the wheelchair through wireless communication with the wireless communication unit. It is characterized by.

Accordingly, the multifunctional wheelchair according to the present invention can remotely control the driving of the wheelchair through a remote controller, so that when the wheelchair is located at a place that can be visually checked, the patient or the user can move to the position of the patient or the user through the remote controller without the help of a caregiver. There is an advantage that the wheelchair can be used by adjusting the wheelchair to move.

The invention will become more apparent through the preferred embodiments described below with reference to the accompanying drawings. Hereinafter will be described in detail to enable those skilled in the art to easily understand and reproduce through these embodiments.

1 is a perspective view of the multifunctional wheelchair according to the present invention viewed from the rear.

As shown in the drawings, the multifunctional wheelchair 1 according to the present invention has a seat holder 13 which is provided in the longitudinal direction on both sides of the pair of one or more folding links 12 provided between the two frames 11. A seat 2 is detachably fixed by a bolt and vertically lifted and lifted according to a user's operation.

In addition, the handle pipe 14 of the wheelchair is detachably mounted such that both driving rollers are in contact with the left / right wheels 15 and 16 of the wheelchair through a connecting means 3, respectively, and the left / right wheel driving rollers are driven by the motor. By means of the rotation of the left / right wheel of the wheelchair is provided with a transmission means 4, respectively. In addition, the armrest pipe 17 of the wheelchair is provided with a left / right wheel adjuster 5 for manipulating the drive of the power transmission means 4.

According to the configuration as described above, the multifunctional wheelchair according to the present invention is mounted on the wheelchair so that the power transmission means for driving the left / right wheels of the wheelchair by the motor drive through the connection means, so that the wheelchair can be manually or automatically By switching to the user can operate the wheelchair more comfortable.

Hereinafter, the configuration of the multifunctional wheelchair according to the present invention will be described in more detail with reference to FIGS. 1 to 6.

First, the transmission means 4 is detachably mounted to the front of the handle pipe 14 constituting the wheelchair via the connecting means (3). That is, as shown in FIG. 2, the connecting means 3 is connected to both side connecting plates 32 through which bolts 31, which closely contact both sides of the handle pipes, pass through the connection pipes 32 at positions corresponding to the handle pipes 13. Bolts 31 protruding rearward of the handle pipe 14 through the plate 32 are penetrated, and both sides are coupled to the both connecting plates 32 through nuts 32 fastened to the bolts 31, respectively. It is comprised by the coupling plate 34.

According to this configuration, the drive rollers on both sides of the power transmission means are brought into close contact with the left and right wheels of the wheelchair, respectively, and then the nut is connected to the bolts passing through the connection plates on both sides and the coupling plate corresponding to the connection plate, thereby making the power transmission means of the wheelchair It will be fixed to.

In this way, the power transmission means 4 is detachably mounted to the wheelchair via the connection means 3 is connected to the power supplied from the battery (not shown) on both sides around the center of the case 41 as shown in FIG. The left / right wheel drive motors 43 and 44 which rotate by rotation are provided. On the outside of each of the drive motors 43 and 44, drive rollers 45 and 66 are axially coupled to the motor rotation shaft through couplings to rotate and drive the left and right wheels 15 and 16 of the wheelchair, respectively. It is.

In the embodiment of the present invention, the driving rollers 45 and 46 are formed of a material such as rubber having excellent frictional force so as to be in close contact with the left / right outer circumferential surface of the wheelchair to drive the respective wheels by frictional force due to rotation. As described above, the driving roller which is in close contact with the left / right wheel of the wheelchair may have a smooth outer circumferential surface as shown in the drawing, but it is more preferable to manufacture the surface of the roller in an uneven shape in order to improve the frictional force.

In addition, the left and right wheel drive motors 43 and 44 are connected to a battery and a remote controller in a circuit, and the left and right motor drive units 421 and 422 for supplying power to the respective motors according to an operation signal of the remote controller are referred to. A printed circuit board 42 is mounted.

Therefore, the multifunctional wheelchair according to the present invention according to the configuration as described above will be able to drive the wheelchair more conveniently through the power transmission means.

In other words, when the left / right wheel adjusters provided in the wheelchair are operated, the power supply from the battery to each motor is interrupted by driving the left / right motor drive unit according to the operation signal, thereby enabling driving as well as direction adjustment. will be.

That is, when power is applied to the motor, the motor rotation shaft is rotated by the motor drive. Accordingly, the rotating shaft of the driving roller coupled to the motor rotating shaft through the coupling is rotated in the same direction as the rotation direction of the motor rotating shaft, so that the driving roller is rotated, so that the left and right wheels of the wheelchair in close contact with each of the driving rollers rotate. It is driven.

On the other hand, the transmission means configured as described above can also be remotely controlled through a remote control. To this end, the multifunctional wheelchair according to the present invention further includes a remote controller 6 for adjusting the left / right drive of the wheelchair through wireless communication.

That is, in the embodiment of the present invention, the printed circuit board 42 embedded in the transmission means includes a wireless communication unit 423 for transmitting and receiving data through wireless communication, and the wireless communication unit 423 as shown in FIG. 4. The microcomputer 424 is further mounted to output driving control signals to the left / right wheel motor driving units 421 and 422 according to the wheelchair adjustment signal received from the vehicle.

In this embodiment, the wireless communication unit 423 performing data communication with the wheelchair power transmission unit transmits and receives a wireless signal using any one of a short range wireless communication module, a Bluetooth module, a wireless LAN module, and a Zigbee module.

In addition, the left / right motor driving units 421 and 422 are provided with left / right driving rollers installed at both sides of the case in accordance with the driving control signal of the microcomputer 424 according to the wheelchair adjustment signal received from the remote controller 6 through the wireless communication unit 423. Drive the motors 43 and 44 to rotate. That is, the left / right motor driving units 421 and 422 independently rotate and drive the respective motors 43 and 44 in the forward or reverse directions according to the travel control signal from the microcomputer 424. At this time, the directional rotation is the wheelchair is rotated by driving the rotational speed of each motor differently.

In this embodiment, the remote controller 6 has left / right wheel adjusters 61 and 62 and an operation switch 66 for manipulating left / right wheel driving of the wheelchair on both sides of the upper surface as shown in FIGS. 5 and 6, respectively. ) Is provided. And therein, the wireless communication unit 63 performing wireless communication with the power transmission means through the antenna, and the operation signal input from the left / right wheel adjusters 61 and 62 are transmitted to the power transmission means through the wireless communication unit 63. There is provided a printed circuit board mounted with a microcomputer 64 for converting and outputting the data into a communication format capable of data communication.

Therefore, according to the configuration as described above, the multifunctional wheelchair according to the present invention will be able to remotely control the wheelchair by performing a data communication between the electric means and the remote controller through wireless communication.

Therefore, even if the wheelchair is located at a distance visually identifiable from the bed, the user can move the wheelchair to the user's position through remote control of the wheelchair through a remote controller without the help of a caregiver.

Meanwhile, according to an additional embodiment of the present invention, the multifunctional wheelchair according to the present invention further includes a camera module (not shown) for capturing an image input from the lens.

In the embodiment of the present invention, the camera module photographs various images of the front when the wheelchair is driven, and although not shown in the drawing, a lens system, an imaging unit for converting an optical signal from the lens system into an analog electric signal, and an imaging unit It includes a conversion unit for processing the signal output from the digital signal to convert it and a camera module control unit for controlling the operation of the entire module. Since the camera module having such configurations is already known before the filing date of the present application, a detailed description thereof will be omitted.

In this embodiment, the microcomputer 424 of the transmission means compresses the image input from the camera module and converts the compressed image into a predetermined format for real-time transmission to the wireless communication unit 423 (Fig. 4). 4).

The remote controller 6 further includes a liquid crystal display 65 (see FIG. 6), and the microcomputer 64 (see FIG. 6) of the remote controller is compressed through the wireless communication unit 63 (see FIG. 6). The method further includes restoring an image signal and outputting the image signal to the liquid crystal display 65 (see FIG. 6).

Accordingly, the multifunctional wheelchair according to the present invention outputs the peripheral image captured by the camera module of the wheelchair to the liquid crystal display of the remote controller, so that when the wheelchair is in a position that cannot be visually checked, the user can output the peripheral image of the wheelchair output to the liquid crystal display. You will be able to remotely control the wheelchair to move to where you are.

Meanwhile, the seat 2 constituting the multifunctional wheelchair according to the present invention includes a base plate 21 on which both ends are detachably fixed to the seat holder 13 and the base plate 21 as shown in FIG. 7. It includes a sheet 25 provided on the upper portion of the seat fixing plate 24 which is provided at the upper and lowered through the guide means 22 and the lifting means 23.

The base plate 21 supports the sheet 25, and a through hole 211 through which the cylinder rod 231 of the elevating means, which will be described later, penetrates is formed inside. In this way, the base plate 21 for supporting the seat is fixed to the seat holder 13 through both ends of the bolt can be separated from the wheelchair frame (1) according to the use state.

In addition, the seat 25 provided on the upper portion of the base plate 21 is composed of a cushion seat 251 and a back seat 252 rotatably connected through the connection bracket 26, and the lower surface of the seat plate 252 will be described later. The upper end of the cylinder rod constituting the means is fixed. In addition, one side of the seat 25 is provided with rotation driving means for rotating the back seat 252 while moving the cushion seat 251 forward and backward by a motor driving according to a user's operation.

Accordingly, the cylinder rod of the elevating means penetrating the upper portion of the base plate is fixed to the bottom surface of the seat fixing plate, so that the entire seat 25 is elevated by the elevating drive of the cylinder rod, and more stably through the guide means 22. It is elevated.

Meanwhile, in the embodiment of the present invention, the guide means 22 includes a plurality of guide shafts 221 protrudingly fixed to the bottom of the seat fixing plate 24, and a base plate 21 corresponding to the guide shafts 221. The guide shaft 221 is composed of a plurality of guide holes 222 through which the lifting and lowering of the guide shaft 221.

And the lifting means 23 for elevating the seat 25 is a hydraulic cylinder 232 including a cylinder rod 231 through which the upper end is fixed to the bottom surface of the seat fixing plate 24 through the base plate 21 and The base plate 21 is provided with a hydraulic pump 233 for operating the hydraulic cylinder 232 by a motor drive.

Therefore, according to the configuration as described above, the multifunctional wheelchair according to the present invention is operated by the hydraulic pump and the hydraulic cylinder in accordance with the operation of the seat lift switch, the cylinder rod fixed to the bottom of the seat fixing plate can be operated by lifting the height of the seat Will be.

In particular, by adjusting the height of the seat in a hydraulic manner through a hydraulic cylinder, it is possible to solve the noise problem that occurred in the conventional screw type.

Meanwhile, in the exemplary embodiment of the present invention, the rotation driving means 27 is provided on the seat fixing plate 24 as shown in FIG. 8 so as to move the cushion seat 251 forward and backward. And, the front and rear rack shaft 272 is fixed to the upper surface of the seat fixing plate 24 in the longitudinal direction, and the front and rear pinion 273 is fixed to the sheet fixing plate 24 to rotate in engagement with the front and rear rack shaft 272 The front and rear feed motor 274 is included, and is integrally provided at the lower portion of the backrest seat 252 through a connecting rod 275, and is engaged with the front and rear pinion 273 at an end of the connecting table 275 to the backrest sheet 252. It is comprised by the gear 276 which rotates.

According to the configuration as described above, the multifunctional wheelchair according to the present invention, the seat back plate constituting the seat through the rotation drive means is raised at least above the height of the back pipe, which is at least the handle pipe, the backrest seat constituting the seat is pulled back. .

That is, when the rotary operation switch (not shown) provided on one side of the cushion seat is pressed, the front and rear feed motor 274 provided in the cushion seat is operated as shown in FIG. 8. Accordingly, the front and rear pinion 273 mounted on the motor rotation shaft is driven to rotate. In response thereto, the gear 276 of the backrest seat engaged with the front and rear pinion 273 rotates in the opposite direction to the rotation direction of the front and rear pinions. The seat 252 is rotated to the front of the wheelchair.

At this time, since the front part of the cushion seat 251 and the lower part of the backrest seat 252 are rotatably connected through the connecting bracket 26, the cushion seat 251 is rotated when the front and rear pinions are driven by the motor. The backrest seat 252 is rotated and put aside while sliding backwards along the front and rear rack shaft 272 and the rail 271 installed on the upper surface of the seat fixing plate.

When the rotation release switch is pressed in a state where the back seat seat is aside as described above, the back seat seat is erected while the cushion seat which is slid backward moving while the motor is driving backwards is slid forward.

As described in detail above, the multifunctional wheelchair according to the present invention is mounted on the wheelchair so that the power transmission means is detachable, and thus the user can operate the wheelchair more comfortably by manually or automatically switching the wheelchair through the power transmission means.

In addition, the remote controller can remotely control the driving of the wheelchair, so that if the wheelchair is located in a visually visible location, the wheelchair can be moved to the patient or the user's own location through the remote controller without the help of a caregiver. There is an advantage to use.

And by adjusting the height of the seat by the hydraulic method through the hydraulic cylinder, it is possible to solve the noise problem that occurred in the conventional screw type.

In addition, by using the surrounding image information provided from the wheelchair through the camera module, the wheelchair located in a place that is not visible to the naked eye can be easily moved to the place where he is.

In addition, when the wheelchair is used, the seat back is pushed out by the rotation driving means in a state where the seat is set at a certain height, and spread out like a cot, so that it can be moved comfortably when moving from a wheelchair to a bed or a bed to a wheelchair. When sitting on the seat, the back seat can be rotated to provide a more comfortable posture.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many different and obvious modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include many such variations.

Claims (11)

A seat that is separably fixed to the seat holder 13 provided in the longitudinal direction on both sides of the pair of one or more folding links 12 provided between the two side frames 11 and vertically elevated according to a user's operation ( In the wheelchair (1) equipped with 2), Both drive rollers are detachably mounted to the handle pipe 14 of the wheelchair through a connecting means 3 so as to be in contact with the left / right wheels 15 and 16 of the wheelchair, respectively, by rotation of the drive roller according to the motor drive. Transmission means (4) for driving the left and right wheels of the wheelchair, respectively; A left / right wheel adjuster (5) provided at one side of the wheelchair (1) to operate the drive of the power transmission means; Multifunctional wheelchair comprising a. The method of claim 1, wherein the transmission means (4) is: A case 41 detachably mounted to the wheelchair 1 through the connecting means 3; A printed circuit board 42 mounted with left / right motor driving units 421 and 422 for controlling motor driving according to an operation signal of the left / right wheel regulator 5; Left and right wheel drive motors 43 and 44 having rotary shafts that are rotated according to the control of the left and right wheel drive unit 421, respectively; Multifunctional wheelchair, characterized in that it comprises a left / right wheel drive rollers (45, 46) connected to the rotary shafts of the left / right wheel drive motors (43, 44), respectively, to rotate the left / right wheels (15, 16) of the wheelchair. . The method of claim 2, The printed circuit board 42 includes a wireless communication unit 423 for transmitting and receiving data through wireless communication, and a driving control signal to the left / right motor driving units 421 and 422 according to a wheelchair adjustment signal received from the wireless communication unit 423. The microcomputer 424 for outputting more is mounted, Multifunctional wheelchair further comprises a remote controller (6) for adjusting the left / right wheel drive of the wheelchair through the wireless communication with the wireless communication unit (423). 4. The remote controller 6 according to claim 3, wherein: Left and right wheel adjusters 61 and 62 for respectively operating left and right wheel drives of the wheelchair; A wireless communication unit 63 performing wireless communication with the power transmission means 4, And a microcomputer 64 for converting and outputting an operation signal input from the left / right wheel adjusters 61 and 62 into a communication format capable of data communication with the power transmission means so as to be transmitted to the power transmission means through the wireless communication unit 63. Multifunctional wheelchair, characterized in that. The method of claim 3, wherein The multifunctional wheelchair further includes a camera module for photographing an image input from a lens, The microcomputer 424 of the power transmission unit further includes compressing an image input from the camera module, converting the compressed image into a predetermined format capable of real time transmission, and outputting the compressed image to the wireless communication unit. The remote controller 6 further includes a liquid crystal display 65, and the microcomputer 64 of the remote controller recovers the compressed image signal received through the wireless communication unit 63 and outputs the compressed image signal to the liquid crystal display 65. Multifunctional wheelchair, characterized in that it further comprises a thing. The connection means (3) according to any one of the preceding claims, wherein: Both side connecting plates 32 through which bolts 31 which closely contact both sides of the handle pipe penetrate at positions corresponding to the handle pipe 14; Both side coupling plate through which the bolt 31 protrudes through the rear side of the handle pipe through the both side connecting plate 32 and is coupled to the both side connecting plate 32 through the nut 33 fastened to the bolt ( Multifunctional wheelchair characterized in that consisting of 34). The seat (2) according to any one of the preceding claims, wherein the seat (2) is: A base plate 21 on which both ends are detachably fixed to the seat holder 13; Multifunctional wheelchair, characterized in that it comprises a seat (25) provided on the upper portion of the base plate (21) provided on the upper portion of the seat fixing plate (24) to be elevated through the guide means (22) and the lifting means (23). 8. The method of claim 7, wherein the guide means 22 is: A plurality of guide shafts 221 protrudingly fixed to the bottom of the seat fixing plate 24; Multifunctional wheelchair, characterized in that composed of a plurality of guide holes 222 through which the guide shaft (221) is allowed to move up and down at the position of the base plate corresponding to the guide shaft (221). The method of claim 7, wherein the lifting means 23 is: A hydraulic cylinder 232 including a cylinder rod 231 penetrating the base plate 21 and having an upper end fixed to a bottom surface of the seat fixing plate 24; Multifunctional wheelchair, characterized in that it comprises a hydraulic pump (233) for operating the hydraulic cylinder by a motor drive. The method of claim 7, wherein The seat 25 is composed of a cushion seat 251 and a back seat 252 rotatably connected through a connecting bracket 26, One side of the seat 25 is provided with rotation driving means 27 for rotating the back seat 252 while the cushion seat 251 is moved forward and backward by driving the motor 274 according to a user's operation. Multifunctional wheelchair, characterized in that. 11. The rotation drive means 27 according to claim 10, wherein: A rail 271 provided on an upper portion of the seat fixing plate 24 to move the cushion sheet 251 forward and backward; Front and rear rack shaft 272 is fixed to the upper surface of the sheet fixing plate 24 in the longitudinal direction, A front and rear feed motor 274 fixed to the seat fixing plate 24 and including a front and rear pinion 273 which rotates in engagement with the front and rear rack shaft 272, It is composed of a gear 276 that is integrally provided at the lower portion of the backrest seat 252 through a connecting rod 275 and engaged with the front and rear pinion 273 at the end of the connecting rod 275 to rotate the backrest sheet 252. Multifunctional wheelchair characterized in that.

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