KR101648667B1

KR101648667B1 - electric wheelchair

Info

Publication number: KR101648667B1
Application number: KR1020150042987A
Authority: KR
Inventors: 이동건; 이규창; 이상용; 이세한
Original assignee: 경남대학교 산학협력단
Priority date: 2015-03-27
Filing date: 2015-03-27
Publication date: 2016-08-16

Abstract

A wheelchair body 100 provided with a pair of rear wheels 130 rotatably driven by an electric motor 120 at a rear end of the wheelchair body 100, And a pair of foot plates 310 provided at the other end of the foot plate 310. The other end of the foot plate 310 is supported by the upper part of the wheelchair body 100 and is vertically movable up and down. A backrest 400 hinged to the rear end of the seat 200 to be rotatable at a predetermined angle and having a pair of armrests 410 rotatably mounted on left and right sides of the seat 400, 100 and the front and rear of the seat 200 are raised from the wheelchair body 100 so that the front and rear of the seat are elevated to the same height or the rear is inclined upward with respect to the front of the seat, Let A leg support driving unit 600 for rotating the leg support 300 about the front end of the seat 200 and a leg support driving unit 600 installed at a front end of the wheelchair body 100, A pair of front wheel moving parts 700 for linearly moving each wheel 110 from the wheelchair body 100 forward and rearward and a pair of front wheel moving parts 700 for moving the wheelchair body 100 from the wheelchair body 100 to the left and right leg lifting parts 500, And a control unit (800) for driving and controlling the wheelchair (700).

Description

Electric wheelchair {electric wheelchair}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric wheelchair, and more particularly, to an electric wheelchair capable of switching to a bed and a stand mode in which a user can maintain a lying or leaning state.

The demand for wheelchairs is increasing as the aging society is accelerating as the elderly population continues to increase. Here, a wheelchair refers to a chair with wheels, armrests, and backrests for the elderly, the handicapped and the patient to move, which is inconvenient.

1, the wheelchair includes a seat 10 and a backrest 20 at an upper portion thereof, and a wheelchair body 20 having a pair of front wheels 30 and a rear wheel 40 rotatably installed at the lower portion thereof. A leg support 60 and a foot plate 70 which are installed in front of the wheel chair body 50 and on which a user's leg and foot are respectively placed; And an armrest (80) fixed to the armrest (50).

However, since the wheelchair has to rotate the wheel by the force of the user, it has been difficult for the user who is inconvenienced to use the wheelchair alone. In order to solve the problem of using the conventional wheelchair, an electric wheelchair in which the wheel is rotated by receiving the rotational power of the electric motor has been developed and used.

Meanwhile, various wheelchair-related technologies that can perform a bed and stand-up (or stand) function in consideration of the convenience of the user have been proposed in general wheelchair and electric wheelchair in addition to general moving function. Here, the bed function is to easily move the user between the wheelchair and the bed, and the standing function is a function necessary to prevent the pressure ulcer due to a long sitting and prevent orthostatic hypotension.

For example, as shown in FIG. 2, a changeover type wheelchair which can change the structure of Korean Patent Registration No. 10-0967989 can be switched to a bed function, and as shown in FIG. 3, Wheelchair has been proposed as a wheelchair-related technique that can be switched to a standing function.

However, the wheelchair according to the related art has been changed to a bed and a standing function in addition to a general moving function to improve the user's convenience. However, the first problem of the structural design is that a wheelchair capable of switching both a bed and a standing- Therefore, the inconvenience of users who have to use each wheelchair remains.

Second, the wheelchair, which is converted into a bed function, mostly depends on the manual method.

Third, the wheelchair which is converted to the standing function operates most of the motorized type, but when the standing type is switched to the standing type, the footrest and the legrest are located in front of the front wheel so that the load of the user is biased toward the front of the wheelchair, There is a lot of concern about falling.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems described above and to provide a method and apparatus for improving the convenience of a user in comparison with a wheelchair capable of switching between a bed mode and a stand mode, To provide an electric wheelchair.

Second, the bed mode and the stand mode are automatically switched by the electric system, so that the user can easily operate the electric wheelchair.

Thirdly, the present invention provides an electric wheelchair in which a load of a user is dispersed in a center direction of a wheelchair, as compared with a conventional standing-type wheelchair, in a stand mode, so that a wheelchair can be tilted or a user can be prevented from falling.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments with reference to the accompanying drawings.

In order to achieve the above object, the electric wheel chair of the present invention includes a pair of rear wheels (110) that are freely rotatable at their front ends and are linearly movable forward and rearward, and a pair of rear wheels (130 A chair body 200 installed on the upper portion of the wheelchair body 100 and capable of being raised and lowered vertically and having one end rotatably coupled to the front end of the seat 200, And the other end is hinged to a leg support 300 having a pair of footrests 310 and a rear end of the seat back 200 at a predetermined angle so as to be rotatable and a pair of armrests 410 are rotatably mounted on left and right sides, The seat back 200 is installed on the wheelchair body 100 and the front and rear of the seat are raised to the same height or the rear is inclined upward with respect to the front of the seat, rear A leg support driving part 600 for rotating the leg support 300 with respect to the front end of the seat 200, A pair of front wheel moving parts 700 installed at the front end of the wheelchair body 100 for linearly moving each of the front wheels 110 forward and backward from the wheelchair body 100 and a pair of left and right wheel lifting parts 500, And a control unit 800 for driving and controlling the pedestal driving unit 600 and the pair of front wheel moving units 700, respectively.

A bed mode input key 910 for transmitting a bed mode signal, a stand mode signal, and a wheel chair return mode signal to the controller 800, and an on / off key 910 for turning on and off the controller 800 according to a user's operation, And a wheelchair return mode input key 940. The operation panel 900 includes a display unit 920, a stand mode input key 930, and a wheelchair return mode input key 940. [

When the bed mode signal is received from the bed mode input key 920 of the operation panel 900, the controller 800 controls the front and rear of the seat 200 to be at the same height from the wheelchair body 100 A bed mode in which the leg support unit 300 is operated so that the leg support unit 300 is positioned on the same plane as the seat 200, When the stand mode input signal is received from the stand mode input key 930 of the wheel chair body 900, the seat back lifting unit 500 is operated so as to rise upward from the front of the seat 200 from the wheel chair body 100 The legrest driving unit 600 is operated so that the legrest 300 is positioned in front of the wheelchair body 100 so that the front wheels 110 are linearly moved forward from the wheelchair body 100 Prize When the wheelchair return mode signal is received from the wheelchair return mode input key 940 of the operation panel 900, the bed mode or the stand mode is returned to the home position and the user is seated And a wheelchair returning mode in which the seat lifting unit 500, the legrest driving unit 600, and the front wheel moving unit 700 are operated respectively.

The wheelchair body 100 includes a body case 140 fixed to the upper portion of the body so as to support the lower surface of the seat 200 and a rear body 140 disposed behind the body case 140, And a support table 150 fixedly installed on the backrest 400 and buffering the back surface of the backrest 400.

In addition, the seat 200 is fixed on the lower surface along the longitudinal direction, has a fastening hole 211 penetrating right and left at the front thereof, and a long slide hole 212 is formed at the rear thereof along the longitudinal direction The seat lifting unit 500 includes a seat belt retracting mechanism 500 for retracting the wheelchair body 100 by rotation of the front lifting motor 511 so that the front of the seat belt 200 is lifted from the wheelchair body 100 A left front plate lifter 510 having a front lifting bar 512 hinged to the hinge fastening hole 211 of the left plate bracket 210 while being lifted and lowered and a rear lifting bar 512 hinged to the hinge fastening hole 211 of the left wheel plate bracket 210, A rear lifting bar 522 hinged to the slide hole 212 of the seat plate bracket 210 to slide along the slide hole 212 while being lifted and lowered by the rotation of the rear lifting motor 521 so as to rise from the slide hole 212, And includes a left seat back lifter 520 And that is characterized.

The legrest driving unit 600 includes a legrest driving motor 610 fixed to a lower surface of the seat 200 and provided with an external gear 611 on an output shaft thereof, And an internal gear 620 coupled to one end of the leg-rest 300 to be rotatable by the rotation of the foot-driving motor 610 and engaged with the external gear 611.

Each of the front wheel moving parts 700 includes a front wheel supporting frame 710 slidable forward and rearward from the front end of the wheelchair body 100 and coupled with the front wheel 110 to move back and forth together, Rearward and backward moving motors 730 and 730 that linearly drive the front and rear wheels 720 forward and backward are coupled to the front wheel support frame 710 so as to linearly move the front wheel support frame 710 from the front wheel supporting frame 710, ).

The electric wheelchair according to the present invention is capable of switching both the bed mode and the stand mode through the first seat lifting unit and the legrest driving unit so that the convenience of the user can be further improved as compared with the wheelchair, .

Second, the bed mode, the stand mode, and the wheelchair return mode are automatically switched by an electric system through the control unit and the operation panel, so that the user can easily operate the system alone.

Third, in the stand mode through the front wheel moving part, the load of the user is dispersed in the center direction of the wheelchair compared with the conventional standing type wheelchair, so that the wheelchair can be fallen or the user can be prevented from falling.

1 is a perspective view of a conventional wheelchair according to the prior art,
2 is a side view showing a wheelchair switchable to a bed function according to the related art,
3 is a side view showing a wheelchair switchable to a standing function according to the prior art,
4 is a perspective view showing an embodiment of an electric wheelchair according to the present invention,
Figs. 5 and 6 are perspective views of the wheelchair body and the seat plate of the embodiment of Fig. 4,
Figure 7 is a side view of the embodiment of Figure 4,
Fig. 8 is a side sectional view showing the hinge connection between the seat panel and the seat panel lifting section based on the embodiment of Fig. 7,
Figs. 9 and 10 are perspective views each showing an enlarged view of the leg-rest driving portion in the embodiment of Fig. 4,
Figs. 11 and 12 are enlarged perspective views of the hinge joint between the seat plate and the backrest in the embodiment of Fig. 4,
Figs. 13 and 14 are perspective views showing the operation of the front-to-rear part of the embodiment of Fig. 4,
15 is an enlarged perspective view of the operation panel of the embodiment of Fig. 4,
Figure 16 is a block diagram of the embodiment of Figure 4,
Figs. 17 to 20 are side elevational side views showing an operation process of the bed mode on the basis of the embodiment of Fig. 4,
Figs. 21 to 25 are side elevational side views showing the operation of the stand mode on the basis of the embodiment of Fig. 4, respectively.

Hereinafter, a preferred embodiment of an electric wheelchair according to the present invention will be described in detail with reference to the accompanying drawings.

4 to 25, the electric wheelchair according to the present invention includes a wheelchair body 100, a seat 200, a legrest 300, a backrest 400, a seat lifting unit 500, a legrest driving unit 600, a front wheel moving part 700, and a control unit 800, and may further include an operation panel 900.

As shown in FIGS. 4 to 6, the wheelchair body 100 includes a pair of front wheels 110 that are freely rotatable at their front ends and are linearly movable forward and rearward. A pair of rear wheels (not shown) driven by the electric motor 120 130 are installed. In other words, each of the front wheels 110 is linearly movable forward and rearward through a front wheel moving part 700 described later, and each of the rear wheels 130 is rotationally driven by a fixed electric motor 120. A battery 50 is detachably installed in the wheelchair body 100 and is connected to the motor 120 and a left leg lifting part 500, a legrest driving part 600, a front wheel moving part 700, a control part 800 And the operation panel 900, and the battery 50 may be charged by a commercial power source.

The wheelchair body 100 includes a body case 140 fixed at an upper portion thereof to support a lower surface of a seat 200 to be described later and a body case 140 disposed at a rear side of the body case 140, And a support 150 fixed to the back and buffering the back surface of the backrest 400 to be described later.

The body case 140 may be formed with a communication hole 141 through which a seat lifting part 500 to be described later penetrates and vertically penetrates the lower surface of the seat 200 to engage the seat lifting part 500 The present invention is not limited to this, and various shapes can be produced in such a manner that the seat lifting unit 500 can be coupled to the lower surface of the seat 200. [

The support 150 may be made of a flexible material such as rubber or silicon, which is in contact with the backrest 400 so as to cushion the back surface of the backrest 400. The reason why the support plate 150 is fixed to the rear of the wheelchair body 100 so as to be positioned behind the body case 140 is that the seat plate 200 is supported by the body case 140 The backrest 400 hinged to the seat 200 is cushioned by the support 150 so as to maintain its state at a predetermined angle with respect to the seat 200. [ Another reason is that even if the seat 200 is lifted from the wheelchair body 100 when the bed mode of the control unit 800 to be described later is activated, the back surface of the backrest 400 is brought into close contact with the support table 150, So as to support a vertical load applied to the backrest 400.

4 to 8, the seat 200 is supported on the upper portion of the wheelchair body 100 and is vertically installed. The seat plate 200 is fixed to the lower surface of the lower surface of the floor so as to be hingeable with a later-described lifting unit 500, and has a fastening hole 211 penetrating to the left and right in the front direction. And a left-hand plate bracket 210 having a long-shaped slide hole 212 penetrating right and left along the longitudinal direction. The lifting operation of the left plate 200 and the left plate bracket 210 will be described in detail in the left-hand lifting unit 500 and the control unit 800, which will be described later.

11 and 12, a backrest 400 to be described later is hinged to the rear end of the seat 200. The backrest 400 is hinged so that the backrest 400 can be rotated at a predetermined angle, . In other words, when the bed mode or the stand mode of the control unit 800 to be described later is operated, the latching jaw 220 is hingedly rotated within the predetermined angle to maintain the state. 11 and 12 illustrate that the hinge rotation of the backrest 400 is interrupted in a latching manner, but other rotational interrupting means such as an electric motor type and a manual button type may be applied.

4 and 7, one end of the leg support 300 is rotatably coupled to the front end of the seat 200 and the other end of the leg support 300 is supported by a pair of foot plates 310 Respectively. The rotational operation of the leg-rest 300 will be described in detail in the leg-rest driver 600 to be described later.

4 to 7, the backrest 400 is rotatably hinged to the rear end of the seat 200 at a predetermined angle, and a pair of armrests 410 are rotatably mounted on the left and right sides. The rotation of the backrest can be interrupted by the latch 220 formed at the rear end of the seat 200 as described above. Each of the armrests 410 is rotated according to a situation as shown in FIGS. 19 and 20, so that the armrests 410 can be used when the bed mode or the stand mode of the control unit 800 to be described later is operated.

4 to 8, the seat lifting part 500 is installed on the wheelchair body 100, and lifts the front and rear of the seat 200 to the same height, or lifts the front of the seat 200 Lifting means for raising the front and rear of the seat 200 from the wheelchair body 100, respectively, so that the rear is inclined upward. The lifting operation of the front lifting motor 511 by the front lifting motor 511 is performed so that the front of the seat 200 is lifted from the wheelchair body 100 and the front lifting motor 511 is hinged to the hinge fastening hole 211 of the seat plate bracket 210, And a left plate front lifter 510 provided with a bar 512. The rear lift motor 521 is hinged to the slide hole 212 of the seat plate bracket 210 while the rear of the seat plate 200 is lifted from the wheelchair body 100 by the rotation of the rear lifting motor 521, And a left plate rear lifter 520 provided with a rear lifting bar 522 that slides along the slide hole 212. The reason why the slide hole 212 is formed in the seat plate bracket 210 is that when the stand mode of the control unit 800 to be described later is activated, the rear lifting bar 522 of the seat plate rearward lifter 520 is moved And is configured to slide along the hole 212 so as to easily raise the rear portion of the seat 200 upward with respect to the front of the seat 200. [ Meanwhile, the left and right front plate lifter 510 and the left plate front lifter 520 may be driven by an electric cylinder that converts the rotational motion of the motor into a linear motion. However, the present invention is not limited thereto. A transmission means may be applied.

8 and 23, the seat back lifter 520 protrudes from the lower portion of the wheel chair body 100 so as to be easily switched to the standing mode by raising the rear of the seat 200, Can be installed.

The legrest driving unit 600 rotates the legrest 300 about the front end of the seat 200 as shown in FIGS. 4, 9, and 10. The footrest driving unit 600 includes a legrest driving motor 610 fixed to a lower surface of the seat 200 and having an output gear 611 mounted on the output shaft thereof, And an internal gear 620 coupled to one end of the leg-rest 300 to be rotatable by rotation of the driving motor 610 and engaged with the external gear 611.

Here, the legrest driving part 600 may be provided as a pair so as to be rotatable while supporting a vertical load of the user's leg weight.

4, 13, and 14, the front wheel drive unit 700 is installed at the front end of the wheelchair body 100 and includes a pair of front wheels 110 that linearly move forward and backward from the wheelchair body 100 Respectively. Each of the front wheel moving parts 700 includes a front wheel supporting frame 710 slidable forward and rearward from the front end of the wheelchair body 100 and coupled with the front wheel 110 to move back and forth together, Rearward and backward moving motors 730 and 730 that linearly drive the front and rear wheels 720 forward and backward are coupled to the front wheel support frame 710 so as to linearly move the front wheel support frame 710 from the front wheel supporting frame 710, ). The reason why the front wheel moving part 700 is provided is that when the stand mode of the control part 800 to be described later is activated, each of the front wheels 110 is moved to the front of the leg support 300, So as not to be removed to the front of the wheelchair but distributed in the center direction.

13 and 14, the wheelchair body 100 includes a guide frame 160 for guiding and guiding the sliding of the front wheel supporting frame 710 of the front wheel moving part 700 to the front wheel supporting frame 710 As shown in Fig.

The control unit 800 drives and controls each of the electric motor 120, the seat lifting unit 500, the legrest driving unit 600 and the pair of front wheel moving units 700 as shown in FIG. 16, And a wheelchair return mode are pre-programmed and stored. The bed mode, the stand mode, and the wheelchair return mode will be described in detail on the operation panel 900 to be described later.

15, the operation panel 900 includes an on / off key 910 for turning the control unit 800 on and off according to a user's operation, a bed mode signal, a stand mode signal, A bed mode input key 920, a stand mode input key 930, and a wheelchair return mode input key 940 for transmitting a return mode signal, respectively. In addition, an electric motor control key 950 for controlling the speed, forward direction and the like of each of the rear wheels 130 by controlling the speed, the rotational direction, and the like of the electric motor 120 is further provided. 15 and 16, the operation panel 900 may include a display window 960 for providing user's convenience and output means for the speaker 970, The bed mode, the stand mode, and the wheelchair return mode can be easily recognized and operated by the user.

Here, the bed mode of the control unit 800 is activated upon receiving the bed mode signal from the bed mode input key 920 of the operation panel 900. The seat lifting unit 500 is operated such that the front and rear of the seat 200 are raised to the same height from the wheelchair body 100 and the legrest 300 is placed on the same plane as the seat 200 The leg support driver 600 is operated.

The stand mode of the control unit 800 is activated upon receiving the stand mode signal from the stand mode input key 930 of the operation panel 900. The left leg lifting part 500 is operated so as to raise the rearward slope upward from the wheelchair body 100 with respect to the front of the left seat back 200. When the legrestrest 300 is in front of the wheelchair body 100, The legrest driving part 600 is operated to operate the front wheel moving part 700 such that each of the front wheels 110 moves linearly from the wheelchair body 100 forward.

Also, the wheelchair return mode of the control unit 800 is activated when the wheelchair return mode signal is received from the wheelchair return mode input key 940 of the operation panel 900. The bed mode or the stand mode is returned to the home position, and the seat lifting unit 500, the legrest driving unit 600, and the front wheel moving unit 700 are operated so that the user can sit.

In addition, Figs. 17 to 20 are side elevational side views showing operation modes of the bed mode on the basis of the embodiment of Fig. 4, respectively, and a bed mode operation process of the control unit 800 will be described.

17 and 18, the front lifting bar 512 of the left front plate lifter 510 and the rear lifting bar 522 of the left plate rear lifter 520 are lifted up. At this time, the leg supporting plate 600 ). 19, the seat 200, the leg-rest 300, and the backrest 400 are moved in the same direction as shown in FIG. 19 by the operation of the seat-back front lifter 510, the seat-backward lifter 520, The operation of the left plate front lifter 510, the left plate rear lifter 520 and the legrest driving part 600 is stopped and maintained. Here, the backrest 400 supports the vertical load of the user by the support member 140 and maintains the state. In addition, the armrests 410 may be rotated downwardly of the seat 200 as shown in FIGS. 19 and 20 so that the user does not need to be moved between the bed and the wheelchair in the bed mode.

FIGS. 21 to 25 are side elevational side views showing the operation of the stand mode on the basis of the embodiment of FIG. 4, respectively, and the operation of the control unit 800 in the stand mode will be described.

21 and 22, the front lifting bar 512 of the seat front forward lifter 510 and the rear lifting bar 522 of the rear seat back lifter 520 are each raised to a predetermined height, The driving unit 600 also rotates together. The lifting operation of the left front plate lifter 510 is stopped to perform a hinge function and the rear lifting bar 522 of the left plate rear lifter 520 slides along the slide hole 212 of the left plate bracket 210 The rear of the seat 200 is raised. When the seat back 200, the leg-rest 300 and the backrest 400 are switched to the set stand type as shown in Fig. 23 by the operation of the seat back lifter 520 and the legrest driving part 600, The operation of the leg support driver 520 and the leg support driver 600 is stopped and maintained. 24 and 25, each of the front wheels 110 is linearly moved forward of the wheelchair body so that each of the front wheels 110 is positioned in front of the legrest 300 in front of the wheelchair body. Here, the backrest 400 is maintained in the state by the latch 220 formed at the rear end of the seat 200.

Therefore, the electric wheel chair according to the present invention is capable of switching both the bed mode and the stand mode through the first seat lifting unit 500 and the legrest driving unit 600, The convenience of the user is further improved.

Second, the bed mode, the stand mode, and the wheelchair return mode are automatically switched through the control unit 800 and the operation panel 900 by an electric system, so that the user can easily operate the system alone.

Third, compared to a conventional standing-type wheelchair, the load of the user is dispersed in the center of the wheelchair in the stand mode through the front-wheel moving unit 700, thereby preventing the wheelchair from falling or preventing the user from falling.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

100: Wheelchair body
110: front wheel 120: electric motor
130: Rear wheel 140: Body case
150: support frame 160: guide frame
200: Seat
210: a seat bracket 220: a latching jaw
300: leg support 310: footrest
400: backrest 410: armrest
500:
510: seat plate front lifter 520: seat plate rearward lifter
600: leg rest drive unit 610: leg rest drive motor
611: Shout gear 620: Inner gear
700: front wheel drive unit 710: front wheel support frame
720: Front and rear Zimba 730: Front wheel movement motor
800:
900: Operation panel
910: ON / OFF key 920: bed mode input key
930: stand mode input key 940: wheelchair return mode input key
950: motor control key 960: display window
970: Speaker

Claims

A wheelchair body 100 in which a pair of front wheels 110 freely rotating forward and backward and a rear wheel 130 rotatably driven by an electric motor 120 are installed at the front end,
A seat plate 200 supported on the upper portion of the wheelchair body 100 and vertically movable up and down,
A leg support 300 rotatably coupled to the front end of the seat 200 at one end and having a pair of footsteps 310 at the other end,
A backrest 400 hinged to a rear end of the seat 200 so as to be rotatable at a predetermined angle and having a pair of armrests 410 rotatably mounted on left and right sides,
The front and rear sides of the left and right side plates are raised to the same height or the rear side of the left and right side plates is raised with respect to the front of the left and right sides of the left and right sides of the wheelchair body 100, A lifting unit 500 for lifting the floor,
A leg support driver 600 for rotating the leg support 300 about the front end of the seat 200,
A pair of front wheel moving parts 700 installed at the front end of the wheelchair body 100 for linearly moving each of the front wheels 110 forward and backward from the wheelchair body 100,
And a control unit 800 for driving and controlling each of the electric motor 120, the seat lifting unit 500, the legrest driving unit 600, and the pair of front wheel moving units 700,
The seat (200)
And is provided with a fastening hole 211 penetrating right and left in the front and a seat plate bracket 210 formed in the rear of the fastening plate 210 and having a long slide hole 212 penetrating left and right along the longitudinal direction. / RTI >
The seat lifting part (500)
The lifting operation of the front lifting motor 511 by the front lifting motor 511 is performed so that the front of the seat 200 is lifted from the wheelchair body 100 and the front lifting motor 511 is hinged to the hinge fastening hole 211 of the seat plate bracket 210, A left plate front lifter 510 provided with a bar 512,
The rear of the seat 200 is hinged to the slide hole 212 of the seat plate bracket 210 while being moved up and down by the rotation of the rear lifting motor 521 so as to rise from the wheelchair body 100, (520) provided with a rear lifting bar (522) sliding along the longitudinal axis (212).

The method according to claim 1,
A bed mode input key 920 for transmitting a bed mode signal, a stand mode signal, and a wheel chair return mode signal to the controller 800, and an on / off key 910 for turning on / off the controller 800 according to a user's operation. ), A stand mode input key (930), and a wheelchair return mode input key (940).

3. The method of claim 2,
The control unit (800)
When the bed mode signal is received from the bed mode input key 920 of the operation panel 900, the front and rear of the seat 200 are lifted up to the same height from the wheelchair body 100, A bed mode in which the leg-rest driving unit 600 is operated so that the leg-rest 300 is located on the same plane as the seat 200,
When the stand mode signal is received from the stand mode input key 930 of the operation panel 900, the seat back lifting unit 500 (see FIG. 5) is lifted upward from the wheel chair body 100, And the legrest driving unit 600 is operated such that the legrest 300 is positioned in front of the wheelchair body 100. Each of the front wheels 110 moves forward from the wheelchair body 100 A stand mode in which the front wheel moving unit 700 is operated so as to be linearly moved,
When the wheelchair return mode signal is received from the wheelchair return mode input key 940 of the operation panel 900, the bed mode or the stand mode is returned to the home position so that the seat lifting unit 500 and the legrest driving unit 600) and the front wheel moving part (700), respectively.

The method according to claim 1,
The wheelchair body (100)
A body case 140 fixed to the upper portion of the seat 200 to support the lower surface of the seat 200,
Further comprising a support base (150) fixed to the rear of the wheelchair body (100) so as to be positioned behind the body case (140) and buffering the back surface of the backrest (400).

delete

The method according to claim 1,
The leg-rest driver (600)
A legrest driving motor 610 fixed to the lower surface of the seat 200 and provided with an external gear 611 on the output shaft,
And an internal gear 620 engaged with one end of the leg support 300 so as to be engaged with the external gear 611 so that the leg support 300 can be rotated by rotation of the leg support driving motor 610 Wherein the wheelchair is an electric wheelchair.

The method according to claim 1,
Each of the front-wheel-moving portions 700 includes:
A front wheel supporting frame 710 slidably mounted on the front end of the wheelchair body 100 and coupled to the front wheel 110 to move back and forth together,
A front and rear barrel 720 coupled to the front wheel support frame 710 to linearly move the front wheel support frame 710 from the wheelchair body 100 forward and backward,
And a front wheel moving motor (730) for linearly driving the front and rear reverse bars (720) forward and backward.