KR20160109188A - Wheelchair for providing function of elevating stairs - Google Patents

Abstract

According to an embodiment of the present invention, disclosed is a wheelchair for providing a function of going up and down stairs. The wheelchair comprises: a seat portion; a seat backrest portion; a foothold portion; a first frame; a second frame; at least one folding portion; a front wheel; a rear wheel; a sliding means; and a moving means. The sliding means has a sliding means support portion, and a sliding operation portion. The moving means may comprise a wheelchair coupling portion, a connection portion, and a moving operation portion.

Description

WHEELCHAIR FOR PROVIDING FUNCTION OF ELEVATING STAIRS [0002]

The present invention relates to a wheelchair, and more particularly to a wheelchair that provides a step-up and step-down function.

A wheelchair is a necessary means of transport for people with limited walking, persons with legs or persons with weak physical strength. Such a wheelchair as a moving means can be used as a moving means without any discomfort in a section where there is no obstacle such as a smooth paper or the like, but it is difficult to move the section without a separate means in a slope, a staircase or an obstacle section.

In order to solve this inconvenience, various electric wheelchairs using the track have been developed, but the increase in the weight and the cost due to the electric motor used in the wheelchair cause a great burden on the disabled.

On the other hand, for the disabled who can not climb the stairs, public facilities are constructed so that wheelchairs can be raised by constructing a slope separately on the stairs. However, since such a facility incurs too much construction cost, general buildings other than public facilities Is being constructed only as a stairway to minimize the construction cost while ignoring the convenience facilities for the disabled.

In addition, there is a wheelchair lift installed in a stairway in a subway, etc. However, in order to use such a lift, a staff member must be called to use it. In addition, the wheelchair is put on the lift without a separate fixing device, and the stability is low.

Therefore, there is a social problem in which disabled people who have been in wheelchairs have been subjected to a great barrier called a staircase, and thus they are greatly restricted in the right of movement.

Therefore, there may be a demand for a wheelchair to guarantee the right of the disabled to move at a low price without increasing the weight of the wheelchair.

Korean Unexamined Patent Application Publication No. 10-2005-0024129 discloses a wheelchair capable of raising the stairs by driving the rear wheel up and down using an electric motor.

The present invention has been devised to cope with the background art described above, and is intended to provide a wheelchair that can provide safety to a user and can ascend or descend a stairway.

SUMMARY OF THE INVENTION The present invention is to provide a wheelchair that can ascend and descend a stair without significantly increasing the weight of the wheelchair.

The present invention is intended to enable a disabled person to use a wheelchair capable of ascending and descending a stairway at low cost.

A wheel chair having a step-up / down function according to an embodiment of the present invention for realizing the above-mentioned problems is disclosed. Wherein the wheelchair includes a seat portion having a left seat frame positioned on the left side of the seat and a right seat frame positioned on the left side of the seat, a seat back portion supporting the seat, a seat portion, A rear frame coupled to one end of the side frame and capable of engaging with the front wheel, and a rear frame coupled to the rear frame, wherein the back frame is coupled to the back frame, A first frame having a rear frame coupled with the other end to engage a rear wheel, a first frame having a lower frame to which a footrest coupling frame and a folding frame can be coupled, the first frame being located on the right side of the wheelchair, A second frame having frames and corresponding frames, a lower frame of the first frame, A first folding subframe that can be engaged with the seat frame, a second folding subframe that can be engaged with the lower frame and the left seat frame of the second frame, and a hinge that engages the first and second folding subframes A front wheel coupled to the front frames of the first and second frames so as to be able to steer, a front wheel coupled to the front frames of the first and second frames to adjust the distance between the first and second frames, A rear wheel coupled to the rear wheel frames of the first and second frames, a sliding means, and a moving means, wherein the sliding means includes a height adjusting portion, a sliding means supporting portion having one end coupled to the shaft of the rear wheel, And the other end of the sliding means support, and the wheelchair can slide on the edge of the slope or the stairs And the moving means includes a wheelchair engaging portion engageable with the wheelchair, a connecting portion engaging with the wheelchair engaging portion and the moving operation portion, and a connecting portion engaging with the moving means, And a moving operation part that is coupled to the step handle so that the wheelchair can move up and down and slide on the step.

The present invention can provide a safety to a user and provide a wheelchair capable of ascending and descending a staircase.

The present invention can provide a wheelchair that can move up and down the stairs without greatly increasing the weight of the wheelchair.

According to the present invention, a wheelchair in which disabled persons can ascend and descend the stairs at low cost can be used.

Figure 1A is a perspective view of a wheelchair in accordance with one embodiment of the present invention.
1B is a perspective view of a wheelchair according to another embodiment of the present invention.
2 is a front view of a wheelchair in accordance with one embodiment of the present invention.
Fig. 3A shows a side view of a wheelchair and an appearance before the length of the sliding means is increased, according to an embodiment of the present invention.
FIG. 3B shows a side view of a wheelchair and an appearance after an increase in the length of the sliding means according to an embodiment of the present invention. FIG.
4 is a view showing the internal construction of a height adjusting portion of a sliding means according to an embodiment of the present invention.
FIG. 5 is a view illustrating a sliding unit sliding along a step according to an embodiment of the present invention. FIG.
Figure 6 illustrates a movement operation associated with an embodiment of the present invention in operative association with a step handle.
Figure 7 is a diagram illustrating the movement means and the movement means associated with an embodiment of the present invention coupled with a wheelchair.
FIG. 8A is a view illustrating a wheelchair moving up and down a staircase according to an embodiment of the present invention. FIG.
8B is a view illustrating a wheelchair descending a staircase according to an embodiment of the present invention.

Various embodiments and / or aspects are now described with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it will also be appreciated by those of ordinary skill in the art that such aspect (s) may be practiced without these specific details. The following description and the annexed drawings set forth in detail certain illustrative aspects of one or more aspects. However, it is to be understood that these aspects are illustrative and that some of the various ways of practicing the various aspects of the principles of the various aspects may be utilized and that the described teachings are intended to include both such aspects and their equivalents.

In addition, the term "or" is intended to mean " exclusive or " That is, it is intended to mean one of the natural inclusive substitutions "X uses A or B ", unless otherwise specified or unclear in context. That is, X uses A; X uses B; Or when X uses both A and B, "X uses A or B" can be applied to either of these cases. It should also be understood that the term "and / or" as used herein refers to and includes all possible combinations of one or more of the listed related items.

It is also to be understood that the term " comprises "and / or" comprising " means that the feature and / or component is present, but does not exclude the presence or addition of one or more other features, components and / It should be understood that it does not. Also, unless the context clearly dictates otherwise or to the contrary, the singular forms in this specification and claims should generally be construed to mean "one or more. &Quot;

Figure 1A is a perspective view of a wheelchair in accordance with one embodiment of the present invention.

1A, a wheelchair 100 according to an embodiment of the present invention includes a seat portion 1, a seat back portion 2, a foot portion 3, a first frame 10, a second frame 10, The front wheel 4, the rear wheel 5, the seat belt 6, the folding unit 20, the sliding means 200, and the moving means 300. [

The seat portion 1 has a seat surface, and has seat frames for supporting the seat on both sides of the seat. The left seat frame located on the left side of the seat and the right seat frame located on the right side of the seat are connected to the folding portion 20 to support the seat. The seat portion 1 does not have a frame in the lateral direction with respect to the front of the wheelchair, so that the seat portion 1 can be folded according to the operation of the folding portion 20. [ The seat can be made of a material such as cloth, leather or the like which can be folded, and the above-mentioned material of the seat is an example, and the present invention is not limited thereto. In addition, the seat portion 1 may include an elastic material such as a sponge to provide comfort to the occupant.

The seat back 2 may be disposed at a predetermined angle (for example, a right angle) with the seat. One side of the seat back 2 is engaged with the backrest frame 11 of the first frame 10 and the other side is engaged with the backrest frame 11 'of the second frame 10'. The seat back 2 is made of the same material as the seat 1 and can be folded in accordance with the operation of the folding unit 20. [ Further, the seat back 2 may be made of a material different from that of the seat 1. The seat back 2 may include an elastic material, such as a sponge, to provide comfort to the occupant.

The pedestal portion 3 can be coupled to the footrest engaging frames 16, 16 '. The footrest 3 can be raised by the occupant so that the foot of the occupant is not attracted to the ground when the wheelchair 100 is operated. The footrest 3 can be folded upwardly to allow the occupant to walk on the ground when the occupant needs to step on the ground (e.g., when riding the wheelchair 100) .

The front wheel 4 is composed of a plurality (for example, two) and is configured so that the wheelchair 100 can steer when driving. The front wheels 4 are coupled to the front frames 14, 14 'of the first and second frames. The front wheel 4 generally has a smaller diameter than the rear wheels 5, but is not necessarily, and may have various diameters as required.

The rear wheel 5 is composed of a plurality (for example, two) and the wheelchair 100 is configured to be able to run on a flat surface. The rear wheel 5 may be coupled to the rear wheel frames 15, 15 'of the first and second frames. The rear wheel 5 generally has a larger diameter than the front wheel 4, but is not necessarily, and may have various diameters as required. Further, the rear wheel 5 may be provided with a brake, whereby the wheelchair 100 can be braked.

The seat belt 6 can be coupled to the backrest frame 11, 11 'or the backrest 2. The seat belt 6 can prevent the occupant from falling down on the wheelchair 100 when the wheelchair 100 is lifted up and down the stairs so that the occupant can safely move the wheelchair 100 100) can be used.

The first frame 10 may be positioned on the right side of the wheelchair 100 with respect to the occupant. The first frame 10 includes a backrest frame 11 to which the seat back 2 can be coupled, a handle 12 positioned above the backrest frame, a side frame 13 parallel to the seat, A front wheel frame 14 coupled to one end of the side frame to engage the front wheel, a rear wheel frame 15 coupled to the other end of the side frame to engage the rear wheel, And a lower frame 17 to which the frame 16 and the folding and unfolding parts can be coupled. The first frame 10 may be made of iron, aluminum, plastic, or the like, and the above-mentioned material is merely an example, and may be made of a suitable material.

The second frame 10 'may be located on the left side of the wheelchair 100 with respect to the occupant. The second frame 10 'may include frames corresponding to the first frame 10. The second frame 10 'may be made of the same material as the first frame 10.

The armrests 18 may be positioned above the side frames 13, 13 'of the first and second frames 10, 10'. The armrest 18 can engage with the backrest frames 11 and 11 'and the front wheels 14 and 14'. The occupant can comfortably and comfortably ride the wheelchair 100 by placing his / her arm on the armrest 18. The armrest 18 also forms a rectangular closing portion with the side frame 13, the backrest frame 11 and the front wheel frame 14 so that the wheelchair coupling portion 310 of the moving means 300 is engaged .

The folding portion 20 is provided with a first folding subframe 21 which can be engaged with the lower frame 17 of the first frame and the right seat frame, a lower folding frame 21 which can be engaged with the lower frame and the left seat frame of the second frame A second folding sub-frame (22) and a hinge (23) connecting the first and second folding sub-frames to adjust a distance between the first and second frames, can do.

The sliding means 200 may include a sliding means supporting portion 210 and a sliding operation portion 220.

The sliding unit support unit 210 may be coupled to the sliding unit 220 at one end thereof. The sliding means supporting portion 210 may be coupled to an extension of the axis of the rear wheel 5 of the wheelchair 100. The sliding means supporting portion 210 is provided with a height adjusting portion so that the length of the sliding means supporting portion 210 can be adjusted by the occupant.

The sliding operation unit 220 may be coupled to one end of the sliding means support unit 210 and may have a curved structure at both ends so that the wheelchair may slide on an edge of an inclined surface or a step. The sliding member supporting portion 220 is divided into two portions 221 and 222 and can be adjusted in length by a sliding operation. This will be described later.

The moving means 300 may include a wheelchair coupling portion 310, a connecting portion 320, and a moving operation portion 360.

The wheelchair coupling part 310 may have a coupling part at one end capable of engaging with the connection part 320 and the other end may be coupled to the closing part of the wheelchair frame 10.

The connecting portion 320 may have a fastening portion that can be engaged with the wheelchair coupling portion 310 and the other end may be coupled to the moving operation portion 360. Through the connection unit 320, the occupant can separate and store the moving operation unit 360 during the flat running, thereby enabling the wheelchair to be conveniently used during the flat running.

1B is a perspective view of a wheelchair according to another embodiment of the present invention.

A wheelchair associated with another embodiment of the present invention may include a wheelchair 100, a sliding means 200, and a moving means 300. [

The moving means 300 may include a wheelchair coupling portion 310, a connecting portion 320, and a moving operation portion 360.

The wheelchair engaging portions 310 and 310` may have engaging portions at one end capable of engaging with the connecting portions 320 and 320` and the other end may be engaged with the closing portions of the wheelchair frames 10 and 10 ' have.

The connecting portions 320 and 320` may have fasteners that can be engaged with the wheelchair coupling portions 310 and 310` and the other end may be coupled to the movement operation portion 360. [ Through the connecting portions 320 and 320 ', the occupant can separate and store the moving operation unit 360 during the flat running, thereby enabling the wheelchair to be conveniently used during the flat running. The moving means 300 has a plurality of wheelchair coupling portions 310 and 310` and connection portions 320 and 320` so that when the wheelchair 100 moves up and down the stairs, Can be engaged with both sides of the wheelchair (100). The moving means 300 is coupled with both sides of the wheelchair 100 so that the user can secure a balance when the wheelchair 100 moves up and down the stairs.

2 is a front view of a wheelchair in accordance with one embodiment of the present invention.

The folding unit 20 includes a first folding subframe 21 which can be engaged with the lower frame 17 of the first frame and the right seat frame 1``, a lower frame 17 'of the second frame, And a hinge (23) for engaging the first and second folding subframes, wherein the first folding subframe (22) and the second folding subframe (22) can be engaged with the left and right seat frames So that it is possible to support the seat portion.

When the user of the wheelchair 100 applies a force in the direction of the center of the wheelchair 100 from the left and right sides of the wheelchair 100 the first and second folding subframes 21, The upper and lower angles of the hinges of the first and second folding sub-frames 21 and 22 and the hinge 23 are reduced and the wheelchair 100 The distance between the first and second frames 10, 10 ' Accordingly, the width of the wheelchair 100 can be reduced, and the user of the wheelchair 100 can easily store the wheelchair 100 when the wheelchair 100 is not used.

Fig. 3A shows a side view of a wheelchair and an appearance before the length of the sliding means is increased, according to an embodiment of the present invention.

The sliding means support 210 may be coupled to the shaft of the rear wheel 5 at one end. The sliding operation unit 220 may be coupled to the other end of the sliding unit support unit 210. The length of the sliding means supporting part 210 may be longer than the diameter of the rear wheel 5 by the height adjusting part. As described above, since the length of the sliding means supporting portion 210 is longer than the diameter of the rear wheel 5 by the height adjusting portion, the wheels of the wheel chair 100 can float in the air. The wheels of the wheelchair 100 are raised in the air and only the sliding operation unit 220 is brought into contact with the ground so that the wheelchair 100 can move up and down the stairs.

The length of the sliding operation unit 220 may be increased as described above. The sliding operation unit 220 includes a front sliding operation unit 221 positioned on the front side of the wheelchair 100 and a rear side sliding operation unit 222 positioned rearward relative to the occupant of the wheelchair 100 can do. The front sliding operation part 221 and the rear side sliding operation part 222 may be configured to be capable of sliding operation. The front and rear sliding operation parts 221 and 222 may increase or decrease the length L of the sliding operation part 220 in a sliding manner. To this end, the front and rear sliding operation units 221 and 222 may include a sliding operation for adjusting the overlap length of both sliding operation units. Accordingly, the wheelchair 100 according to an embodiment of the present invention can reduce the length of the sliding operation unit 220 when the user is traveling on a flat surface, thereby preventing the movement of the sliding operation unit 220.

3A shows a state before the length L of the sliding operation unit 220 is increased. The front sliding operation part 221 may be positioned below the rear sliding operation part 222. [ Accordingly, the bottom of the front side sliding portion 221 and the bottom of the rear side sliding portion 222 may be displaced. When the sliding operation unit 220 is positioned below the rear sliding operation unit 222 so that the edge of the step is slid forward on the basis of the occupant of the wheelchair 100, The drop of the operation part 220 may not be caught by the step edge.

The sliding operation unit 220 may have a curved structure at both ends so that the wheelchair 100 can slide on the slopes or the edges of the stairs. The height H of the curved surface structure at both ends of the sliding operation portion on the lower surface of the sliding operation portion 220 is set to a height Hs of the stepped portion so that the sliding means can climb the step when the wheelchair climbs the step, . ≪ / RTI >

FIG. 3B shows a side view of a wheelchair and an appearance after an increase in the length of the sliding means according to an embodiment of the present invention. FIG.

The sliding operation unit 220 may include the front and rear sliding operation units 221 and 222. The front and rear sliding operation units 221 and 222 are coupled to perform a sliding operation. In one embodiment of the present invention, the length of the sliding operation portion 220 can be configured such that, when the wheelchair moves up and down the stairs, the sliding means 200 spans at least three corners of the stairs.

The rear sliding operation portion 222 is fixed to the sliding means support portion 210 and the front sliding operation portion 221 slides on the lower surface of the rear sliding operation portion 222 to rotate the front and rear sliding operation portions 221 and 222 The length L 'of the sliding operation unit 220 can be increased or decreased.

The length L 'of the sliding operation unit 220 may be a length that allows the sliding means 200 to extend over at least three corners of the stairs when the wheelchair 100 moves up and down the stairs have.

4 is a view showing the internal construction of a height adjusting portion of a sliding means according to an embodiment of the present invention.

The height adjusting portion of the sliding means 200 includes a rack gear 211 and a pinion gear 212. The height of the sliding means support 210 is adjusted in accordance with the operation of the height adjusting knob 213, It can be adjusted to be more than the radius of the rear wheel.

The height adjusting knob 213 can be pivotally moved about the rotation axis 214. One end of the height adjusting knob 213 is provided with a gear which is coupled to a gear located inside the pinion gear 212 and is capable of rotating the pinion gear in a direction opposite to the above-mentioned figure. When the passenger pulls the height adjustment knob 213 in the direction of the drawing reference below the reference plane, the pinion gear 212 coupled to the height adjustment knob 213 rotates counterclockwise about the rotation axis 214 as a rotation axis. When the pinion gear 212 rotates in the counterclockwise direction, the rack gear 211 coupled with the pinion gear 212 moves downward, and the length of the sliding unit support portion 210 can be increased.

When the passenger pushes the height adjustment knob 213 in the downward direction of the drawing reference, the gear engaged with the gear located inside the pinion gear 212 located at one end of the height adjustment knob 213, The pinion gear 212 slides on the gear located inside the pinion gear 212, and the pinion gear 212 does not rotate counterclockwise or clockwise and does not operate. Therefore, when the passenger pulls the height adjusting knob 213 upward, the length of the sliding means supporting portion 210 is increased. When the passenger pushes down the height adjusting knob, the passenger moves the height adjusting knob 213, The length of the sliding means supporting portion 210, which is increased when the sliding member supporting portion 210 is pulled up, is maintained. Therefore, the passenger can conveniently adjust the length of the sliding means support 210 by pulling the height adjustment knob 213. [

FIG. 5 is a view illustrating a sliding unit sliding along a step according to an embodiment of the present invention. FIG.

As shown in FIG. 5, the wheelchair 100 can slide the edge of the step by means of the sliding means 200 to move up and down the step. The length of the sliding operation part 220 may be a length L 'sufficient to cover the three corners Ls of the stairs when the wheelchair 100 moves up and down the stairs.

FIG. 5 is a view showing a state of climbing a stairway, but the wheelchair 100 according to the present invention may be moved down a stairway.

5, the stepped portion of the sliding operation unit 220 is positioned such that the front-side sliding operation unit 221 is positioned below the rear-side sliding operation unit 222, and the wheelchair 100 When raising or lowering the staircase, the above step may not be applied to the edge of the staircase.

As described above, the sliding operation unit 220 may have a curved structure at both ends so that the wheelchair 100 can slide on the sloped surface or the edge of the stairs. The height H of the curved surface structure at the both ends of the sliding operation part on the lower surface of the sliding operation part 220 is set to be equal to the height Hs of the stepped part so that the sliding device can climb the step when the wheelchair climbs the step, . ≪ / RTI >

Figure 6 illustrates a movement operation associated with an embodiment of the present invention in operative association with a step handle.

The moving operation unit 360 of the moving unit 300 may include a plurality of motors 340 and 340 'and a width adjusting unit 350 of the roller units 330 and 330'.

FIG. 6 is a cross-sectional view of the stepped handle 500 taken at a right angle, showing how the moving operation unit 360 associated with an embodiment of the present invention operates in combination with the step handle 500.

The moving operation unit 300 may include a plurality of motors 340 and 340 'and a plurality of motors 340 and 340' as power sources. The moving operation unit 300 is coupled to both sides of the step handle 500, 500 and the wheelchair 100 connected to the moving means 300 can be moved up and down the step and a plurality of concave shaped A roller 330 coupled to the first side of the stepped handle 500 to allow the plurality of rollers to adaptively engage the thickness of the stepped handle 500, And a width adjusting unit 350 for adjusting the distance between the rollers 330 'coupled to the second side of the step handle. In one embodiment of the present invention, the motors are installed on the left side and three on the right side, so that a total of six motors can be included in the movement operation part 300. [ The number of motors described above is only an example, and the present invention is not limited thereto.

The roller portions 330 and 330 'may have a concave shape so as to engage with the stepped handle 500 on both sides of the cylindrical stepped handle 500. The roller units 330 and 330 'may be made of rubber or the like so as not to slip at the step handle 500. The roller 330, 330 'may be made of various materials that do not slip on the step handle 500. In an embodiment of the present invention, three rollers on the left side and three rollers on the right side are provided so as to correspond to the plurality of motors, and a total of six rollers may be included in the movement operation portion 300. The number of rollers described above is only an example, and the present invention is not limited thereto.

The width adjusting unit 350 may include elastic means to adjust the width of the rollers 330 and 330 'of the roller unit so that the rollers may be adaptively coupled to the thickness of the step handle 500 Can be done.

Figure 7 is a diagram illustrating the movement means and the movement means associated with an embodiment of the present invention coupled with a wheelchair.

The moving means 300 may include a wheelchair coupling portion 310, a connecting portion 320, and a moving operation portion 360.

As described above, the wheelchair coupling part 310 may have a coupling part at one end capable of engaging with the connection part 320, and the other end may be coupled to the closing part of the wheelchair frame 10.

As described above, the connecting portion 320 may have a fastener that can be engaged with the wheelchair coupling portion 310, and the other end may be coupled to the movement operating portion 360. Through the connection unit 320, the passenger can separate and store the moving operation unit 360 during the flat running, thereby enabling the wheelchair to be conveniently used during the flat running.

FIG. 8A is a view illustrating a wheelchair moving up and down a staircase according to an embodiment of the present invention. FIG.

The wheelchair 100 related to an embodiment of the present invention includes a sliding means 200 and a moving means 300.

As described above, in the wheelchair 100 according to the embodiment of the present invention, the wheels of the wheelchair 100 are lifted by the sliding means 200, and the sliding means 200 slides the edge of the stairs, .

Also, as described above, the wheelchair 200 related to an embodiment of the present invention is configured such that the moving means 300 is coupled to the step handle 500 by the moving means 300, . The moving means 300 may provide power when the wheelchair 100 climbs the stairs. In addition, the moving means 300 may adjust the speed at which the wheelchair descends the stairs to a safe speed when the wheelchair 100 descends the stairs.

8B is a view illustrating a wheelchair descending a staircase according to an embodiment of the present invention.

The wheelchair 100 related to an embodiment of the present invention includes a sliding means 200 and a moving means 300.

As described above, in the wheelchair 100 according to the embodiment of the present invention, the wheels of the wheelchair 100 are lifted by the sliding means 200, and the sliding means 200 slides the edge of the stairs, Can be lowered.

In addition, as described above, the wheelchair 200 related to the embodiment of the present invention is configured such that the moving means 300 is coupled to the step handle 500 by the moving means 300, It is possible to adjust the descending speed of the wheelchair to a safe speed for the passenger. At this time, the moving means 300 of the present invention may be located on the rear side of the wheelchair.

The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features presented herein.

A seat portion (1);
A seat back 2;
A foot part (3);
A first frame 10;
A second frame 10 ';
Folding unit 20;
A front wheel 4;
A rear wheel (5);
A seat belt 6;
Sliding means (200);
Moving means 300;

Claims (8)

A wheelchair having a step-up /
A seat portion supporting the seat and having a left seat frame positioned on the left side of the seat and a right seat frame positioned on the right side of the seat;
A seat back portion;
A footrest portion;
A backrest frame which is located on the right side of the wheelchair and to which the seat back can be coupled; a handle portion located above the backrest frame; a side frame parallel to the seat; A first frame having a front frame, a rear frame coupled to the other end of the side frame to engage the rear wheel, a footrest coupling frame to which the footrest can be coupled, and a lower frame to which the foldaway can be coupled;
A second frame located on the left side of the wheelchair and having frames corresponding to the first frame;
A first folding subframe that can be engaged with a lower frame and a right seat frame of the first frame, a second folding subframe that can be engaged with a lower frame and a left seat frame of the second frame, At least one folding unit configured to adjust a distance between the first and second frames, the folding unit having a hinge for connecting the folding subframe and supporting the seat;
A front wheel steerably coupled to the front wheel frames of the first and second frames;
A rear wheel coupled to rear wheel frames of the first and second frames;
Sliding means; And
transportation;
/ RTI >
Wherein the sliding means comprises:
A sliding means supporting portion having one end connected to a shaft of the rear wheel and having a height adjusting portion; And
A sliding operation portion coupled to the other end of the sliding means support portion and having a curved surface at both ends so that the wheelchair can slide on an edge of an inclined surface or a step;
And,
The moving means
A wheelchair coupling portion capable of engaging with the wheelchair;
A connecting portion that engages with the wheelchair engaging portion and the moving operation portion; And
A moving operation part coupled to the step handle so that the wheelchair coupled with the moving means can move up and down and slide on the step;
.
bathchair. The method according to claim 1,
Wherein a height of a curved surface structure at both ends of the sliding operation unit at a lower surface of the sliding operation unit is higher than a height of a step so that the sliding unit can climb the step when the wheelchair climbs the step,
bathchair. The method according to claim 1,
Wherein the length of the sliding means is configured such that when the wheelchair moves up and down the stairs, the sliding means spans at least three corners of the stairs,
bathchair. The method according to claim 1,
Wherein a length of the sliding means is changed in a sliding manner,
bathchair. The method according to claim 1,
The height adjuster includes:
A rack and a pinion gear, and the length of the sliding means supporting part can be adjusted to be equal to or larger than a radius of the rear wheel in a bottom surface direction, according to the operation of the height adjusting knob,
bathchair. The method according to claim 1,
Wherein,
A plurality of motors; And
Wherein the plurality of motors are used as a power source and are coupled to both side surfaces of the step handle so as to rotate along the side surface of the step handle to allow the wheelchair connected to the moving means to move up and down the step, And a plurality of roller portions which are concavely formed so as to be engaged with each other,
bathchair. The method according to claim 6,
The movement operation unit
A width for adjusting the distance between the roller coupled to the first side of the stepped handle and the roller coupled to the second side of the stepped handle so that the plurality of rollers can adaptively engage the thickness of the stepped handle, Comprising:
bathchair. The method according to claim 1,
A seat belt portion coupled to the seat back portion so as to fix the body of the occupant of the wheelchair when the wheelchair moves up, down, and slide;
≪ / RTI >
bathchair.

Images