WO2012121568A2

WO2012121568A2 - Foldable electric wheelchair

Info

Publication number: WO2012121568A2
Application number: PCT/KR2012/001746
Authority: WO
Inventors: 황효균; 박찬호; 양재혁; 정문채; 김재열; 주진만; 배종표
Original assignee: 엘지전자 주식회사
Priority date: 2011-03-10
Filing date: 2012-03-09
Publication date: 2012-09-13
Also published as: WO2012121568A3

Abstract

The present invention relates to a foldable electric wheelchair. The foldable electric wheelchair according to the invention can be easily transported or stored in a narrow space since a user can conveniently fold the wheelchair into a compact size.

Description

Folding electric wheelchair

The present invention relates to an electric wheelchair configured to move to a desired place in a state where a user who is not free or uncomfortable with a leg, and more particularly, relates to a folding electric wheelchair that a user can easily fold.

In general, a wheelchair is a general term for a chair with wheels so that a person who is not free with a leg or who is uncomfortable may move to a desired place while sitting. Wheelchairs are used more and more in the modern age of the disabled and elderly population.

Such wheelchairs are largely classified into a manual wheelchair in which a user manually drives the wheel and an electric wheelchair in which the wheel is electrically driven by an electric motor.

In particular, the electric wheelchair is provided with a seat and a backrest on a frame constituting the vehicle body, drive wheels and auxiliary wheels are mounted on both sides thereof, and the wheelchair is formed by a handle, an armrest, a footrest, and the like. The user can operate the lever or the like provided as the user operates the lever.

However, such electric wheelchairs are heavy and bulky, which causes problems for the user to directly transport the electric wheelchair in a place where the electric wheelchair cannot carry, or to store the electric wheelchair in a limited space.

Accordingly, there is a demand for an electric wheelchair that can be folded into a small volume and easily transported or stored in a narrow space.

Accordingly, an object of the present invention is to provide a folding electric wheelchair configured to be folded in a small volume so that the electric wheelchair can be easily carried or stored in a narrow space.

In order to achieve the above object, the present invention is a chair configured to allow the user to sit, including a backrest, the backrest is configured to fold in front; A horizontal support frame part attached to one side of the bottom of the chair and configured to support a frame of the chair; And a footrest attached to a front side of the horizontal support frame portion, and having a footrest attached to one end of the horizontal support frame portion, the footrest frame configured to rotate in a front direction; and a horizontal support frame portion. A drive frame attached to a side and having a first wheel attached to one end thereof and configured to rotate inwardly; A wheel frame attached to one side of the drive unit frame and having a second wheel attached to one end thereof and configured to rotate in a front direction; And a drive unit attached to one side of the drive unit frame, the cross section of the drive unit including a suspension configured to be attached to and detached from the wheel frame.

The present invention further includes an embodiment further comprising a wheel fixing frame attached to one side of the horizontal support frame part, configured to rotate in a front direction, and configured to be detachable from the second wheel.

In addition, the present invention includes an embodiment in which the wheel fixing frame is configured of a “B” shaped brace.

And, the present invention, the horizontal support frame, the folding electric wheelchair further comprises a fixing unit configured to fix the wheel fixing frame.

The present invention includes an embodiment in which the chair unit is attached to one side of the backrest and includes an armrest configured to allow a user to place an arm.

And the present invention includes an embodiment in which the armrest is configured to rotate about a point attached to the backrest.

The present invention further includes a joint fixing part attached to one side of the footrest frame and connecting the footrest frame and the horizontal support frame, wherein the footrest frame is rotated in a front direction about the joint fixing part. It includes an embodiment configured to.

In addition, the present invention includes an embodiment in which the footrest is configured to rotate in the front direction.

The present invention further includes a rotary joint attached to one surface of the footrest frame, and the footrest frame includes an embodiment configured to fold around the rotation joint.

In addition, the present invention further includes an embodiment further comprising a driver fixing frame attached to one side of the horizontal support frame and configured to connect the horizontal support frame and the driver frame.

The present invention further includes an embodiment in which the driver frame further includes a cam profile attached to one surface of the driver frame and configured to adjust the length of the driver frame.

The present invention further includes an embodiment in which the driving unit frame further includes a wheel rotating unit attached to one surface of the driving unit frame and configured to rotate the first wheel about the driving unit frame.

In addition, the present invention includes an embodiment further comprising a battery configured to provide power to drive the first or second wheels, and to be detachable from one end surface of the drive unit frame.

The present invention is not limited to the above-described embodiment, and as can be seen in the appended claims, modifications can be made by those skilled in the art to which the present invention pertains, and such modifications are within the scope of the present invention. Reveal.

According to the foldable electric wheelchair of the present invention, the user can easily fold the electric wheelchair in a small volume, it is possible to easily carry the electric wheelchair or store in a narrow space.

1 is a schematic diagram of a folding electric wheelchair according to an embodiment of the present invention.

Figure 2 is a block diagram of a chair portion of the folding electric wheelchair according to an embodiment of the present invention.

3 is a block diagram of a driving unit of the folding electric wheelchair according to an embodiment of the present invention.

4 is a view showing a folding state of the chair unit according to an embodiment of the present invention.

5 is a view showing a folded state of the driving unit according to an embodiment of the present invention.

6 to 15 are views illustrating a method of folding a foldable electric wheelchair according to an embodiment of the present invention.

16 is a view showing a method of folding a driving unit according to an embodiment of the present invention.

17 is a six-dimensional view of the folding electric wheelchair in the unfolded state according to the embodiment of the present invention.

18 is a six-dimensional view of the folding electric wheelchair in a folded state according to an embodiment of the present invention.

19 is a view showing an example of mounting the battery in the folding electric wheelchair according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. In the following description, the same components are given the same names and the same reference numerals for the convenience of description.

The terminology used in the present invention was selected as a general term that is widely used at present, but in some cases, the term is arbitrarily selected by the applicant, and in this case, the meaning of the term is described in detail in the description of the present invention. The present invention should be understood as meanings other than terms.

1 is a schematic diagram of a folding electric wheelchair 10 according to an embodiment of the present invention.

Figure (a) shows the folding electric wheelchair 10 in the unfolded state, Figure (b) shows the folding electric wheelchair 10 in the folded state, Figure (c) shows the folding electric wheelchair in the user folded state An example of moving the wheelchair 10 is shown.

As shown in Figure (a), the folding electric wheelchair 10 of the present invention includes the function of a general electric wheelchair (10). That is, the folding electric wheelchair 10 is configured to move to a desired place while the user who is not comfortable with his or her legs is sitting. In addition, the user is configured to drive the wheels electrically with the battery or the like without manually driving the wheels.

And, as shown in Figure (b), the folding electric wheelchair 10 of the present invention is configured to be folded. Accordingly, the user can easily carry directly in a place where the wheelchair can not carry while folding the folding electric wheelchair 10, can be stored in a limited space.

In particular, the folding electric wheelchair 10 of the present invention is configured to expose the wheel to the outside in the folded state. Therefore, the user can easily move the folding electric wheelchair 10 by rolling the exposed wheel even in the folded state.

Functions of the foldable electric wheelchair 10 of the present invention described above may be implemented by the components of the foldable electric wheelchair 10 to be described later, in the following, the configuration of the foldable electric wheelchair 10 and the foldable electric wheelchair 10 How to fold in detail.

The folding electric wheelchair 10 of the present invention is largely provided with a chair unit 100 configured to allow a user to sit and manipulate a moving speed, direction, etc. of the folding electric wheelchair 10, and the wheels are foldable according to the user's operation. It is composed of a drive unit 200 configured to move the electric wheelchair 10. Then, the driving unit 200 is fixed to the lower end of the chair unit 100, and serves to support the chair unit 100.

2 is a block diagram of the chair unit 100 of the folding electric wheelchair 10 according to the embodiment of the present invention.

Chair portion 100 of the folding electric wheelchair 10 of the present invention is a chair 101, armrest 102, horizontal support frame 103, drive unit fixing frame 104, wheel fixing frame 105, footrest frame ( 106 and footrest 109. In addition, the footrest frame 106 includes a joint fixing part 107 and a rotary joint 108.

The chair 101 is configured in the form of a general chair that a user can sit on, and includes a backrest on which the user can support his back. Here, the backrest is configured to be folded in the inner direction of the chair 101.

Armrest 102 is attached to the left and right sides of the backrest, it is configured to allow the user to wear the arm. As shown in the figure, the armrest 102 may be configured as a frame of a rectangular parallelepiped, and configured to be rotatable about a point attached to the backrest.

The horizontal support frame 103 is a frame fixed to one side of the bottom of the chair 101, as shown in the figure, it may be composed of a frame having the same shape as the bottom outer shell of the chair 101.

The driver fixing frame 104 is one or more frames attached to one lower surface of the horizontal support frame 103, and may be configured as a circular frame, which is empty inside, as shown in the drawing. The driving unit fixing frame 104 connects and fixes the chair unit 100 and the driving unit 200.

The wheel fixing frame 105, as shown in the figure, is composed of a "X" shaped brace (Brace), one side is attached to the rear of the horizontal support frame 103, the other side is a drive unit which will be described later in Figure 3 The frame is attached to the rear wheel 202 of the (200). Accordingly, the wheel fixing frame 105 serves to fix the rear wheel 202 to the horizontal support frame 103. The wheel fixing frame 105 is configured to be rotatable about a point attached to the horizontal support frame 103 and is configured to be detachably attached to the rear wheel 202.

The footrest frame 106 is a frame configured to be attached to one side of the lower end of the horizontal support frame 103 to attach the footrest 109 to one side thereof. Foot frame 106, as shown in the figure, the "c" shaped horizontal frame, and one side may be composed of a vertical frame attached to the horizontal frame and the other side is attached to the foot 109. In addition, the footrest frame 106 includes a joint fixing part 107 and a rotary joint 108.

The joint fixing part 107 is provided on one side of the horizontal frame of the foot frame 106 to connect the foot frame 106 and the horizontal support frame 103. The footrest frame 106 is configured to rotate around the joint fixing part 107.

Rotating joint 108 is provided on one side of the horizontal frame of the foot frame 106, the horizontal frame of the foot frame 106 is configured to fold around the rotary joint 108.

The footrest 109 is attached to one side of the bottom of the footrest frame 106, so that the user is configured to walk on the foot. The footrest 109 is configured to be rotatable about a point attached to the footrest frame 106.

In addition, the chair unit 100 of the folding electric wheelchair 10 of the present invention may include an operation unit (not shown), the operation unit is composed of an operation switch that allows the user to operate the folding electric wheelchair 10. . For example, the operation unit may be configured as a compliance controller using a joystick or various sensors. The user may adjust the moving direction or the speed of the folding electric wheelchair 10 by using the operation unit, or manipulate the folding electric wheelchair 10 to be folded or unfolded.

3 is a configuration diagram of the driving unit 200 of the folding electric wheelchair 10 according to the embodiment of the present invention.

The driving unit 200 of the folding electric wheelchair 10 of the present invention is a front wheel 201, rear wheel 202, the drive frame 203, the rear wheel frame 204, the suspension 205 and the battery 206 It is composed. The drive frame 203 includes a cam profile 207 and a front wheel rotator 208.

The front wheel 201 and the rear wheel 202 are wheels for moving the folding electric wheelchair 10. The front wheel 201 is located at the front of the folding electric wheelchair 10, and the rear wheel 202 is folding. Located in the rear of the electric wheelchair (10).

And, as shown in the figure, the rear wheels 202 may be composed of electric wheels driven by the battery 206. That is, the rear wheels 202 may be configured as wheels integrated with a motor (In-Wheel Motor), and may also be configured as wheels of omni-wheel driving in a predetermined angle. Accordingly, driving and control of the foldable electric wheelchair 10 can be performed at the same time, and the movement efficiency of the foldable electric wheelchair 10 can be maximized.

However, in the drawing, but only the rear wheels 202 is configured as electric wheels, the folding electric wheelchair 10 of the present invention can be configured of both front and rear wheels as electric wheels, only the front wheels 201 can be configured as electric wheels Can be.

The driving unit frame 203 is a frame to which the front wheels 201 and the rear wheels 202 are attached. As shown in the drawing, the driving unit frame 203 may be configured as a frame having a “-” shape in a cylindrical shape. And, the drive frame 203 is composed of two frames located on the left and right of the folding electric wheelchair (10). That is, the left front wheel 201 and the left rear wheel 202 are attached to the drive frame 203 on the left side, and the right front wheel 201 and the right rear wheel 202 are attached to the drive frame 203 on the right side. do.

The driving unit frame 203 is attached to the driving unit fixing frame 104 to connect the chair unit 100 and the driving unit 200. As shown in the drawing, the driving unit frame 203 is inserted into the driving unit fixing frame 104, so that the driving unit frame 203 may rotate in the inside and outside directions of the left and right sides of the foldable electric wheelchair 10.

The drive frame 203 includes a cam profile 207 and a front wheel rotator 208.

The cam profile 207 is attached to one horizontal direction surface of the drive frame 203, and is configured to adjust the length of the drive frame 203 in the horizontal direction.

The front wheel rotator 208 is attached to one surface of the drive frame 203 in the vertical direction, and is configured to rotate the front wheel 201 about the drive frame 203.

The rear wheel frame 204 is a frame that is attached to one side of the drive frame 203, the other side is attached to the central axis of the rear wheel 202, to secure the rear wheels 202 to the drive frame (203) Play a role. In addition, the rear wheel frame 204 is configured to be rotatable in a forward and backward direction about a point attached to the driving unit frame 203.

Suspension 205 is one side is attached to the drive frame 203, the other side is a frame attached to one side of the rear wheel frame 204, the impact of the road surface is not transmitted to the foldable electric wheelchair 10 or the user It does not absorb shocks. The suspension 205 is configured to be detachably attached to the rear wheel frame 204.

The battery 206 is an apparatus for supplying electricity to the foldable electric wheelchair 10, and may be mounted on one rear surface of the driving frame 203. Details of the battery 206 will be described later with reference to FIG. 19.

Hereinafter, a method of folding the folding electric wheelchair 10 will be described based on the above-described configuration of the folding electric wheelchair 10.

4 is a view illustrating a state in which the chair unit 100 according to an embodiment of the present invention is folded, and FIG. 5 is a view illustrating a state in which the driving unit 200 according to an embodiment of the present invention is folded.

The user can easily fold the folding electric wheelchair 10 in a small volume according to the folding method of the folding electric wheelchair 10 described later. Therefore, the user can easily carry directly in a place where the wheelchair can not carry while folding the folding electric wheelchair 10, can be stored in a limited space. In particular, the folding electric wheelchair 10 of the present invention is configured to expose the wheel to the outside in the folded state. Therefore, the user can easily move the folding electric wheelchair 10 by rolling the exposed wheel even in the folded state.

6 to 15 are views illustrating a folding method of the folding electric wheelchair 10 according to the embodiment of the present invention.

Regarding how to fold the folding electric wheelchair 10, the folding electric wheelchair 10 in the unfolded state is set in step (a) and the step (k) of the folding electric wheelchair 10 in the folded state. Explain step by step.

First, step (a) of Figure 6 is a folding electric wheelchair 10 in an unfolded state.

In step (b) of FIG. 6, the backrest of the chair 101 is folded in the front direction of the folding electric wheelchair 10 in step (a). The armrest 102 also rotates to naturally face the front direction.

Step (c) of Figure 7, in step (b) rotates the armrest 102 in the rear direction of the folding electric wheelchair (10). The armrest 102 is rotated around the point where the armrest 102 is attached to the chair 101 in the rear direction of the foldable electric wheelchair 10.

In step (d) of FIG. 8, in step (c), the footrest 109 is rotated inward of the foldable electric wheelchair 10. The footrest 109 is rotated inward of the foldable electric wheelchair 10 around the point where the footrest 109 is attached to the footrest frame 106.

In step (e) of FIG. 9, in step (d), the footrest frame 106 is rotated inward of the foldable electric wheelchair 10. That is, the footrest frame 106 is rotated in the inward direction of the foldable electric wheelchair 10 around the joint fixing part 107. Then, by using the rotary joint 108, the footrest 109 is horizontal to the chair 101.

In step (f) of FIG. 10, the wheel fixing frame 105 is detached from the rear wheel 202 in step (e). The side of the wheel fixing frame 105 attached to the central axis of the rear wheels 202 is detached from the rear wheels 202.

Step (g) of Figure 11, in step (f) rotates the wheel fixing frame 105 in the front direction of the folding electric wheelchair 10, the side of the wheel fixing frame 105 detached from the rear wheels (202) To the drive fixing frame 104. The wheel fixing frame 105 is rotated in the front direction of the foldable electric wheelchair 10 around the point attached to the horizontal support frame 103, and the wheel fixing frame 105 of the wheel fixing frame 105 detached from the rear wheel 202 is rotated. The side is fixed to the drive fixing frame 104. Therefore, the driving part fixing frame 104 is configured to include a fixing part capable of fixing the wheel fixing frame 105.

In step (h) of FIG. 12, the suspension 205 is detached from the rear wheel frame 204 in step (g), and the front wheel rotator 208 is rotated to allow the front wheel 201 to fold the electric wheelchair 10. To face inward.

In step (i) of FIG. 13, the driving unit frame 203 is rotated in step (h) to fold one rear wheel 202 in the inward direction of the foldable electric wheelchair 10. Then, the rear wheel frame 204 is rotated to move the other rear wheel 202 in the front direction of the foldable electric wheelchair 10.

In step (j) of FIG. 14, the driving wheel frame 203 is rotated in step (i) to move the rear wheels 202 moved in the front direction of the folding electric wheelchair 10 to the inside direction of the folding electric wheelchair 10. Fold into

In step (k) of FIG. 15, the rear wheel 202 is fixed by using the suspension 205 in step (j). The suspension 205 detached in step (h) is attached to the rear wheel frame 204 to fix the rear wheel 202 to the folding electric wheelchair 10.

Through the above steps (a) to (k), the user can easily fold the folding electric wheelchair 10. In addition, as shown in step (k) of Figure 15, the folding electric wheelchair 10 is configured to expose the wheel to the outside in the folded state. Therefore, the user can easily move the folding electric wheelchair 10 by rolling the exposed wheel even in the folded state.

16 is a view showing a folding method of the driving unit 200 according to an embodiment of the present invention.

FIG. 16 is a view illustrating only the driving unit 200 separately from the folding method of the folding electric wheelchair 10 described above. Therefore, steps (a) to (f) of FIG. 16 correspond to steps (f) to (k) of FIGS. 11 to 15.

In brief, the wheel fixing frame 105 is detached from the rear wheel 202 in step (a), and the wheel fixing frame 105 is rotated in the front direction of the folding electric wheelchair 10 in step (b). Then, the side of the wheel fixing frame 105 detached from the rear wheel 202 is fixed to the drive fixing frame 104.

Then, in step (c), the suspension 205 is detached from the rear wheel frame 204, and the rear wheel frame 204 is rotated, so that one rear wheel 202 moves toward the front of the folding electric wheelchair 10. Move it.

Then, the driving unit frame 203 is rotated in step (d) to fold the rear wheels 202 moved in the front direction of the foldable electric wheelchair 10 in the inward direction of the foldable electric wheelchair 10.

Then, in step (e) by rotating the drive frame 203, the other rear wheel 202 is folded in the inward direction of the folding electric wheelchair (10).

Finally, in step (f), the rear wheel 202 is fixed using the suspension 205.

And, the folding method of the folding electric wheelchair 10 of the present invention is not limited to the order of the above-described steps, it is obvious that the order of each step can be changed to fold the folding electric wheelchair 10.

17 is a six-dimensional view of the folding electric wheelchair 10 in an unfolded state according to an embodiment of the present invention, Figure 18 is a six-dimensional view of the folding electric wheelchair 10 in a folded state according to an embodiment of the present invention.

19 is a view showing an example of mounting the battery 206 to the folding electric wheelchair 10 according to an embodiment of the present invention.

The folding electric wheelchair 10 of the present invention includes a battery 206 that provides power to drive the rear wheels 202. The battery 206 has a cylindrical shape, as shown in the figure, and can be attached to and detached from the drive frame 203.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings, and the present invention is also provided. Naturally, it belongs to the range of.

Various embodiments of the invention have been described above in the best mode for carrying out the invention.

The present invention relates to a folding electric wheelchair that can be easily folded by the user.

Claims

A chair configured to be seated by a user and including a backrest, the backrest being configured to fold in front;

A horizontal support frame part attached to one side of the bottom of the chair and configured to support a frame of the chair; And

A chair part attached to the front side of the horizontal support frame part, and having a footrest attached to one end surface of the horizontal support frame part, wherein the footrest frame is configured to rotate in the front direction;

A drive unit frame attached to one side of the horizontal support frame unit, and having a first wheel attached to one end surface thereof, and configured to rotate inwardly;

A wheel frame attached to one side of the driving unit frame, and having a second wheel attached to one end surface thereof, and configured to rotate in a front direction; And

A drive unit attached to one side of the drive unit frame, the cross section having a suspension configured to be detachable from the wheel frame;

Folding electric wheelchair comprising a.
The method of claim 1,

And a wheel fixing frame attached to one side of the horizontal support frame part and configured to rotate in a front direction and configured to be detachable from the second wheel.
The method of claim 2,

The wheel fixing frame,

Folding electric wheelchair consisting of a “X” shaped brace.
The method of claim 2,

The horizontal support frame,

A folding electric wheelchair further comprising a fixing unit configured to fix the wheel fixing frame.
The method of claim 1,

The chair unit,

A folding electric wheelchair attached to one side of the backrest, comprising a armrest configured to allow the user to put the arm.
The method of claim 5,

The armrest,

A foldable electric wheelchair configured to rotate about a point attached to the backrest.
The method of claim 1,

It is attached to one side of the foot frame, further comprising a joint fixing portion for connecting the foot frame and the horizontal support frame,

The foot frame is,

A folding electric wheelchair configured to rotate in the front direction about the joint fixing part.
The method of claim 1,

The footrest,

Folding electric wheelchair configured to rotate in the forward direction.
The method of claim 1,

Further comprising a rotary joint attached to one side of the foot frame,

The foot frame is,

Folding electric wheelchair configured to fold about the rotary joint.
The method of claim 1,

And a drive unit fixing frame attached to one side of the horizontal support frame and configured to connect the horizontal support frame and the drive unit frame.
The method of claim 1,

The drive unit frame,

And a cam profile attached to one side of the drive frame and configured to adjust the length of the drive frame.
The method of claim 1,

The drive unit frame,

And a wheel rotating unit attached to one surface of the driving unit frame and configured to rotate the first wheel about the driving unit frame.
The method of claim 1,

And a battery configured to provide power to drive the first or second wheels and to be detachable from one end surface of the drive unit frame.