KR101750193B1 - Electric Wheelchair - Google Patents

Electric Wheelchair Download PDF

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Publication number
KR101750193B1
KR101750193B1 KR1020160016729A KR20160016729A KR101750193B1 KR 101750193 B1 KR101750193 B1 KR 101750193B1 KR 1020160016729 A KR1020160016729 A KR 1020160016729A KR 20160016729 A KR20160016729 A KR 20160016729A KR 101750193 B1 KR101750193 B1 KR 101750193B1
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KR
South Korea
Prior art keywords
wheelchair
support
driving motor
wheelchair body
rotated
Prior art date
Application number
KR1020160016729A
Other languages
Korean (ko)
Inventor
김창환
Original Assignee
주식회사 더원
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Publication date
Application filed by 주식회사 더원 filed Critical 주식회사 더원
Priority to KR1020160016729A priority Critical patent/KR101750193B1/en
Application granted granted Critical
Publication of KR101750193B1 publication Critical patent/KR101750193B1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
    • A61G5/061—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps for climbing stairs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
    • A61G5/045—Rear wheel drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
    • A61G5/068—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps with extensible supports pushing upwards, e.g. telescopic legs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering

Abstract

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 easily and safely climbing a stairway on a building or a road without an assistant.
The present invention relates to a wheelchair comprising a wheelchair body (10) including an armrest and a seat, a moving wheel (20) provided in contact with the ground at the front and rear lower portions of the wheelchair body for guiding movement of the wheelchair, And a controller (30) installed at one side of the wheelchair body (10) for controlling the movement of the wheel (20) to move the wheelchair in the forward, backward, left and right directions, A support member 40 is installed to support the load of the wheelchair and a step-up member 50 is installed at the rear lower portion of the wheelchair body 10 so as to raise the step, A second rotating shaft 52 that is connected to the second driving motor 51 by gear or chain connection and is rotated and a second rotating shaft 52 And the second driving motor < RTI ID = 0.0 > And a retaining member 53 having three or four engagement legs 55 formed radially so as to rise up the steps while being rotated by the driving force of the wheelchair body 10. [ A first rotating shaft 42 which is connected to the first driving motor 41 by gear or chain connection and is installed across the seat of the wheelchair body 10, And a support base 43 having a predetermined length and positioned on the left and right sides of the wheel chair body 10 so as to be positioned rearward of the armrest with one end connected to both sides of the first rotation axis 42, The first end portion of the wheelchair is supported by the first driving motor 41 in the forward direction of the wheelchair body and the other end thereof is closely contacted to the ground to support the load of the wheelchair. When not in use, And stored The other end of the support (43) is characterized in that the cloud roller 44 fixed to the roller rotation axis (44a) such that rotation movement of the wheelchair installed in a support in close contact with the ground conditions.

Description

Electric Wheelchair < RTI ID = 0.0 >

The present invention relates to an electric wheelchair capable of easily and safely climbing stairs installed on a building or a road without an assistant.

Generally, a wheelchair is a sole means by which a disabled person who can not use a leg can move. The wheelchair is divided into a manual wheelchair in which a user rotates the wheel by hand, and an electric wheelchair which is moved in accordance with the rotation of the wheel do.

1 is a perspective view showing a typical electric wheelchair.

A conventional electric wheelchair 10 includes a wheelchair chair 16 which is positioned at a predetermined height from the ground and is supported by a frame 12 and includes a backrest having a knob 14, A driving member 18 formed of a motor and a driving shaft 18a and a rear portion of the frame 12 supporting the wheelchair chair 16, (20) connected to a driving shaft (18a) constituting the driving shaft (18) and receiving power transmitted from the driving member to rotate in the forward and backward directions, A pair of left and right steering wheels 22 for controlling the moving direction of the wheelchair 10 while being rotated back and forth and left and right according to the steering wheel 22, It comprises a foot receiving plate 24, which is installed in the bottom.

In the conventional electric wheel chair 10 having such a structure, when the motor (not shown) constituting the driving member 18 is driven, the driving shaft 18a connected to the wheel 20 is rotated, And the direction of movement of the wheelchair 10 is adjusted by adjusting the steering wheel 22 installed on the front of the wheelchair 10 in the left-right direction.

However, in the case of the conventional electric wheel chair constructed as described above, the forward movement or the backward movement is possible, so that there is no problem in moving on a flat road surface. However, there is no problem in moving up and down the stairs or passing through a narrow jaw, There is a serious problem that the access to the building or the subway station without access to the ramp for wheelchair or the lift for the disabled is not possible and the right of movement is limited.

In order to solve such a problem, Korean Utility Model Registration No. 20-186026 and No. 20-0293419 are disclosed as a technique for freely raising or lowering a staircase or a narrow jaw of a sidewalk.

The Korean Utility Model Registration No. 20-186026 discloses that a caterpillar (caterpillar) is used instead of a conventional wheel, but the weight of the electric wheelchair itself is much heavier and bulky, and the structure is complicated, have. In addition, even if it is actually applied, there is a problem in that it can not be widely used because it becomes very expensive due to a high manufacturing cost.

Korean Utility Model Registration No. 20-0293419 discloses a wheelchair having a stepped member having a simple structure at the lower rear portion of an electric wheelchair so that the step can be climbed. However, when the stepped member rests on a step, There is a problem that the front part of the wheelchair is collapsed forward by the load during the climbing process, thus causing a safety accident.

According to an aspect of the present invention, there is provided a wheelchair comprising: a wheelchair body including an armrest and a seat; a plurality of wheels disposed in front of and behind the wheelchair body in contact with the ground to guide movement of the wheelchair; And a control unit (30) installed at one side of the wheelchair body (10) to control the movement of the wheel (20) to move the wheelchair in the forward, backward, leftward and rightward directions. A support member 40 is installed on the front left and right sides of the wheelchair body 10 so as to support the load of the wheelchair and a step-up member 50 is provided on the lower rear portion of the wheelchair body 10 to raise the step, The step-up member 50 includes a second driving motor 51 provided at a lower rear portion of the wheelchair body 10 and a second rotation shaft 52 rotated by gear or chain connection to the second driving motor 51 And the second rotary shaft 52, And a latching member 53 provided on both sides and formed with three to four latching legs 55 radially so as to be raised by the driving force of the second driving motor 51, A first driving motor 41 provided on the lower front of the wheelchair body 10 and a second driving motor 41 connected to the first driving motor 41 by a gear or a chain and rotated across the seat of the wheelchair body 10 A support base 43 having a predetermined length and positioned on the left and right sides of the wheel chair body 10 so as to be positioned rearward of the armrests with one end connected to both sides of the first rotation axis 42, The support 43 is rotated forward of the wheelchair body by the driving of the first driving motor 41 to support the other end of the wheelchair in close contact with the ground while supporting the load of the wheelchair. The user The shoulders are built kept in the vicinity of, the opposite end of the support (43) in the support close to the ground conditions, it characterized in that the cloud roller 44 fixed to the roller rotation axis (44a) so that the moving rotation of the wheelchair installed.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a wheelchair which is capable of stably and easily climbing the stairs while moving backward, And an object of the present invention is to provide an electric wheelchair for preventing the occurrence of a wheelchair.

According to an aspect of the present invention, there is provided a wheelchair comprising: a wheelchair body including an armrest and a seat; a plurality of wheels disposed in front of and behind the wheelchair body in contact with the ground to guide movement of the wheelchair; And a control unit (30) installed at one side of the wheelchair body (10) to control the movement of the wheel (20) to move the wheelchair in the forward, backward, leftward and rightward directions. A support member 40 is installed on the front left and right sides of the wheelchair body 10 so as to support the load of the wheelchair and a step-up member 50 is provided on the lower rear portion of the wheelchair body 10 to raise the step, The supporting member 40 includes a first driving motor 41 installed at the lower front of the wheelchair body 10 and a first rotating shaft 42 connected to the first driving motor 41 by gear or chain connection, And the amount of the first rotary shaft 42 And the other end thereof is closely contacted to the ground surface to support the load of the wheelchair and is supported by a supporting base 43 having a predetermined length The step-up member 50 includes a second driving motor 51 installed at a lower rear portion of the wheelchair body 10 and a second driving motor 51 connected to the second driving motor 51 in a gear- Two or more engaging legs 54 are formed radially so as to rise up the stairs while being rotated by the driving force of the second driving motor 51 and provided on both sides of the second rotating shaft 52 And a latching hole (53).

According to the electric wheel chair constructed as described above, when the support is provided on the front side of the wheel chair, the support bar supports the load of the wheel chair when climbing up the stairs through the backward movement, so that it can be easily and conveniently climbed without assistance. In particular, since the wheelchair is stably supported, it is possible to minimize or eliminate the possibility of a safety accident.

1 is a front view of an electric wheelchair according to the present invention,
2 is a rear view of the electric wheel chair according to the present invention,
3 is a side view of an electric wheelchair according to the present invention,
4 is a perspective view showing a supporting member of an electric wheel chair according to the present invention,
FIG. 5 is a perspective view showing a step-up member of an electric wheel chair according to the present invention,
Fig. 6 is a front view of the stopper in Fig. 5,
FIG. 7 is a view showing a process of climbing a stair by moving the electric wheel chair according to the present invention backward.

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

4, the supporting member 40 of the present invention includes a first driving motor 41 installed at a lower front portion of the wheelchair body 10, A first rotation shaft 42 provided on both sides of the wheelchair body so as to be connected to both sides of the first rotation shaft 42 so as to be positioned on both left and right sides of the wheelchair body, And a supporting base 43 having a predetermined length for supporting the load of the wheelchair when the front end of the wheelchair is rotated forward by the driving force of the driving wheel 41 and rotated forward.

When the support member 40 is not used, the support base 43 is rotated and moved to the rear of the armrest and is held up near both shoulders of the user. When the support member 40 is used, the support base 43 ) Is rotated forward and the end of the support is held in close contact with the surface of the paper.

A battery is installed in the lower portion of the wheelchair body 10 to supply power for rotating the control unit and the movement wheel. The control unit 30 may be installed at the end of the armrest like an ordinary electric wheelchair, (30) are provided with operation buttons for controlling the support member and the step-up member.

As described above, according to the present invention, the support member 40 and the step-up / down member 50 are installed on a conventional electric wheel chair, so that the disabled person can easily climb the stairs without the aid of a guardian.

At this time, the electric wheel chair of the present invention moves up the stairs while moving backward, and when the stairs are climbed, the step up climbing member 50 climbs the stairs while supporting the load of the wheel chair by the supporting member 40.

4, the supporting member 40 of the present invention includes a first driving motor 41 installed at a lower front portion of the wheelchair body 10, One end is connected to both sides of the first rotation shaft 42 and is rotated forward and backward by the driving force of the first drive motor 41 and is turned forward, And a support base (43) fixedly supported on the ground to support a load of the wheelchair.

When the support member 40 is not used, the support member 43 is moved to the back of the armrest as shown in FIG. 3. When the support member 40 is used, the support member 43 is rotated forward, And is used while being tightly supported on the ground.

At this time, the first rotation shaft 42 is rotated through the driving of the first driving motor 41, which is a small turning movement of the support table 43, to rotate forward or backward of the support table 43.

The first rotation shaft 42 may be directly connected to the first driving motor or may be provided to receive a driving force via a reduction gear unit 41a for deceleration as shown in the accompanying drawings.

Here, since two support rods 43 are provided and connected to both sides of the first rotation shaft 42, the other ends of the support rods can be connected to each other by a connecting rod 45.

The connecting rod 45 can be rotated at different angles due to a load, a bias, or the like when the supporting rod is rotated by the driving force of the first driving motor.

At this time, though not shown, a sheet such as a vinyl sheet may be provided in the open space between the connecting rod and each support so as to partially cover the head of the disabled person when the support is not used. These sheets can be used not only for umbrellas that block rain during wheelchair use but also for blocking direct sunlight from the sun.

5, the step-up / down member 50 includes a second driving motor 51 installed at a lower rear portion of the wheelchair body 10 and a second driving motor 51, A second rotating shaft 52 connected to the first rotating shaft 52 and a second rotating shaft 52 disposed on both sides of the second rotating shaft 52. The rotating shaft 52 is rotated by the driving force of the second driving motor 51, (53) in which the guide portion (54) is formed.

The step up climbing member should stop the operation of the step up climbing member in a state where the hook leg 54 does not touch the ground when not in use. Of course, when the step-up member is used, the engaging leg 54 may be formed so as not to touch the ground.

The step up member 50 of the present invention rotates the second rotation shaft 52 by driving the second driving motor 51 to rotate the stopper 53 to the rear side so that the stopper 55 is rotated It straddles the top of the stairs and climbs the stairs.

6, the latch 53 includes a rotary plate 54 having a rotary shaft coupling hole 54a formed at a central portion thereof to be coupled to the second rotary shaft 52 for rotation therewith, And an engaging leg 55 protruding from the edge of the step so as to stitch the upper surface of the step.

The engaging leg 55 is formed so as not to extend radially from the central point of the rotary plate but to be bent at a predetermined angle in the rotation direction of the rotary plate with respect to an extension line connected to the center point of the rotary plate.

Since the engaging leg 55 is formed to be bent in the rotating direction of the rotating plate, when the engaging leg 55 strikes the step, the engaging leg can be effectively prevented from being damaged by the pressure applied to the engaging leg, The stairs can be climbed in a state where the latches are located on the upper side of the stairs rather than the forward position, so that the stairs can be easily climbed even when the stairs are raised.

As described above, according to the present invention, the support base 43 of the support member is in contact with the ground surface in front of the electric wheel chair to support the wheel chair. In this state, the engagement legs 55 of the step- Will step up the stairs one by one.

Here, the other end of the support table 43 supported on the ground is rotatably installed with the roller rotation shaft 44a so as to smoothly move the wheelchair while being rotated when the wheelchair is moved backward while closely supporting the ground. A rolling roller 44 may be provided.

With the rolling roller installed, it is possible to smoothly move the wheelchair while minimizing frictional resistance even when the support is in close contact with the ground.

The support member 43 is formed of, for example,

Figure 112016014359362-pat00001
'Shape. This is to prevent interference due to the use of the wheel chair in a state where the support base 43 is positioned on the side surface of the wheelchair body when not used, and to maintain a high pressing force on the ground when using the support bar.

In the electric wheelchair according to the present invention configured as described above, when the user tries to climb the stairs, the support base 43 of the supporting member provided on the front side of the wheelchair body is moved backward as shown in Fig. 7, And in this state, the locking legs 55 of the step-up members provided on the rear side of the wheelchair body main body stably climb up the stairs one by one.

When the wheelchair is stepped up by one step, the support 43 is rotated by the driving force of the first driving motor so that the end is automatically controlled to be brought into close contact with the ground surface. And can be operated by operating buttons provided on the control unit 30. [

After the stairs are all raised, the support 43, which has been moved forward, is rotated backward to be positioned behind the armrests. After stopping the first and second driving motors, the electric wheelchair is rotated The vehicle can be operated and operated.

10: wheelchair body 20: moving wheel
30: control unit 40: support member
41: first drive motor 42: first rotation shaft
43: Support base 44: Roller roller
44a: roller rotating shaft 45; Connecting rod
50: step-up member 51: second drive motor
52: second rotation shaft 53:
54: rotary plate 54a: rotary shaft engaging hole
55:

Claims (4)

A wheelchair body 10 including an armrest and a seat, a moving wheel 20 installed in contact with the ground on the front and rear lower portions of the wheelchair body for guiding movement of the wheelchair, And a controller (30) installed in the wheelchair (20) to control the movement of the wheel (20) to move the wheelchair in the forward, backward, leftward and rightward directions,
A support member 40 is installed on the front left and right sides of the wheelchair body 10 so as to support the load of the wheelchair and a step-up member 50 is installed on the rear lower part of the wheelchair body 10,
The step-up member 50 includes a second driving motor 51 installed at a lower rear portion of the wheelchair body 10 and a second rotation shaft 52 which are respectively provided on both sides of the second rotation shaft 52 and which are rotated by the driving force of the second driving motor 51 so as to rise up the stairs, 53,
The supporting member 40 includes a first driving motor 41 installed at the lower front of the wheelchair body 10 and a second driving motor 41 connected to the wheelchair body 10 by being gear- A first rotating shaft 42 installed across the seat of the wheelchair body 10 and a second rotating shaft 42 disposed on both sides of the wheelchair body 10 in a state of being connected to both sides of the first rotating shaft 42, Length support 43,
The support 43 is rotated in the forward direction of the wheelchair body by the driving of the first driving motor 41 to support the load of the wheelchair while the other end of the support wheel 43 is supported on the ground surface. It is kept up near the shoulders of the user,
And a rolling roller (44) fixed to the other end of the support base (43) by a roller rotation shaft (44a) so as to be rotated when the wheelchair is moved in a state of being tightly supported on the ground.
delete The method according to claim 1,
When the wheelchair is used in a state where it is positioned on the side of the wheelchair body when not in use,
Figure 112016014359362-pat00002
&Quot;.< / RTI >
The method according to claim 1,
The stopper 53 includes a rotary plate 54 having a rotary shaft engaging hole 54a formed at its center so as to be inserted into the second rotary shaft 52 and to rotate the upper surface of the step And an engaging leg (55) protruded to be bent and protruded to be bent in a rotating direction of the rotating plate.
KR1020160016729A 2016-02-13 2016-02-13 Electric Wheelchair KR101750193B1 (en)

Priority Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190143087A (en) 2018-06-20 2019-12-30 용기 김 Electromotive wheelchair for stairs
KR20200012225A (en) 2018-07-26 2020-02-05 순천대학교 산학협력단 Smart-operated vehicle and its monitoring system
KR20230080654A (en) 2021-11-30 2023-06-07 김규성 Electromotive wheelchair for stairs

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101617980A (en) * 2009-07-31 2010-01-06 李荣标 Stair-climbing wheel chair

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101617980A (en) * 2009-07-31 2010-01-06 李荣标 Stair-climbing wheel chair

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190143087A (en) 2018-06-20 2019-12-30 용기 김 Electromotive wheelchair for stairs
KR20200012225A (en) 2018-07-26 2020-02-05 순천대학교 산학협력단 Smart-operated vehicle and its monitoring system
KR20230080654A (en) 2021-11-30 2023-06-07 김규성 Electromotive wheelchair for stairs

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