KR100883421B1 - Electromotive wheel chair - Google Patents

Abstract

An electromotive wheel chair is provided, in which a user easily takes a seat by the structure that the sheet is ascended and descended. An electromotive wheel chair comprises: a front frame(110) equipped with a front wheel; a seat frame(120) which is combined with the front frame and in which a seat is equipped so that a user can take a seat; a back frame(130) which is detachably combined with the back the front frame and in which a drive wheel is equipped; a drive unit(170) which is equipped in the back frame and provides the driving force to the drive wheel; a lifting device(180) which is equipped in the front frame and moves the seat frame up and down; a manipulation part(190) which is equipped in the drive unit and applies an operation signal to the drive unit and the lifting unit.

Description

Electric Wheelchair {Electromotive wheel chair}

The present invention relates to an electric wheelchair, and more particularly, the front frame is detachable consisting of a heavy battery and a drive device provided with a drive device, and easy to store and transport by reducing the volume by the structure folded by the folding portion. And, the seat is raised and lowered by the structure can be easily seated by the user relates to an electric wheelchair that provides convenience.

In general, the wheelchair currently used is a mechanism for allowing a physically handicapped person, a patient, or an elderly person who is inconvenient to move more easily, and a wheelchair of a manual type in which a user manually rotates wheels mounted on both sides of a seat. Although it is used a lot, there is a problem that the arm is disabled or the elderly are almost impossible to use without the help of others.

Therefore, in recent years, many electric wheelchairs have been developed that can be easily used by driving wheels by a motor installed in a vehicle body so as not to require a user's direct force.

 The electric wheelchair is provided with a seat and a backrest on a frame constituting the vehicle body, and 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 lever can be driven by the user operating.

According to the conventional electric wheel chair, it does not have a structure that is separated or folded, so that the storage and transport of the electric wheel chair should be stored and transported as it is, thus taking up a lot of space when storing and transporting, thus reducing the space utilization when storing. There is a difficult problem.

In addition, the conventional electric wheelchair has a problem that the seat is maintaining a certain height when the user who is inconvenient to try to board.

Therefore, there is a need for improvement.

The present invention has been created by the necessity as described above, consisting of a back frame with a heavy battery and a driving device in the front frame is removable, easy to store and transport by reducing the volume by the structure folded by the folding portion. In addition, the user can be easily seated by the structure that the seat is raised and lowered to provide an electric wheelchair that provides convenience.

Electric wheel chair according to the invention is hinged to the front side is provided with a front frame rotatable front wheel, seat frame provided with a seat coupled to the elevating to the front frame so that the user can seat, and the rear side of the front frame A back frame detachably coupled to the back frame, a driving device provided on the back frame and providing driving force to the driving wheel, and a front frame provided on the front frame to move the seat frame up and down on the front frame. It is provided in the device and the front frame comprises a control unit for applying the operation signal to the drive device and the lifting device.

The front frame, seat frame and back frame are characterized in that the rod type.

And, the front frame is made of a pair of symmetrical and separated from each other, folded by the first folding portion, the seat frame is made of a pair of symmetrical and separated from each other, characterized in that the folding by the second fold do.

The first folding part is provided on both sides of the front frame and coupled to the first conveying body so as to be slidable in the longitudinal direction of the front frame, one end of which is hinged to the first conveying body, and the other end is hinged to the other side of the front frame. It characterized in that the center comprises a pair of first folding bar hingedly connected.

And, the second folding portion is provided on both sides of the seat frame, the second carrier coupled to the slide in the longitudinal direction of the seat frame, and one end hinged to the second carrier, the other end is hinged to the other side of the seat frame It is characterized in that it comprises a pair of second folding bar is hinged connected to the center.

In addition, the back frame is characterized in that coupled to the rear side of the front frame by a detachable portion.

Detachable portion is provided on the back frame and the insertion rod is formed protruding on the rear side of the front frame and inserted into the back frame, the threaded portion formed to be connected to the insertion rod and the outer peripheral surface of the back frame after the insertion rod is inserted into the back frame, And a fixing holder having a thread formed on the inner circumferential surface thereof.

And, the fixed holder is characterized in that it further comprises a departure prevention member for preventing the departure from the back frame.

The anti-separation member comprises a locking protrusion protruding from the inner surface of the fixed holder, and an anti-separation groove formed by being recessed at the front end of the back frame so that the locking protrusion is received.

In addition, the driving device is characterized in that it comprises a battery seated on the back frame, and a driving motor portion electrically connected to the battery to transfer power to the driving wheel, respectively.

In addition, the elevating device is a screw that is fixed in the vertical direction of the front frame, and the lifting motor and screw to rotate by transmitting power to the screw is coupled to one side on the screw, the other side is fixed to the seat frame and the rotation of the screw It includes a transfer bracket for moving up and down on the screw when the seat frame is moved up and down.

In addition, one side of the transfer bracket is characterized in that the guide groove is formed so as to slide on the front frame.

In addition, the front frame and the seat frame is coupled by the guide block is guided sliding, the guide block is formed on one side of the fixed groove is fixed on the seat frame, the other side the sliding groove is seated and sliding the front frame Characterized in that formed.

In addition, the rear side of the front frame is characterized in that the removable handle is formed.

In addition, the back frame is characterized in that the removable handle is formed.

As described above, the electric wheelchair according to the present invention, unlike the prior invention, is made up of a back frame provided with a heavy battery and a driving device in the front frame, and the volume of the electric wheelchair is folded by a folding structure. It can be greatly reduced, so it is easy to store and transport.

In addition, as the seat frame provided with the seat is moved up and down by the elevating device on the front frame, the user can be seated on the seat without the help of the user who is uncomfortable, thereby providing convenience.

In addition, the front frame and the back frame can be easily attached and detached by a detachable part, and the rear wheel of the front frame is provided with an auxiliary wheel can be manually pushed by the companion when the back frame is separated can be used manually or automatically selected advantages Has

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the electric wheelchair according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view showing an exploded state of the front frame and the back frame of the electric wheelchair according to an embodiment of the present invention, Figure 2 is a side view of Figure 1, Figure 3 according to a preferred embodiment of the present invention 4 is a side view showing a state of operation by the elevating device of the electric wheelchair according to an embodiment of the present invention, Figure 5 is a perspective view of the electric wheelchair according to an embodiment of the present invention 6 is a view illustrating a detachable part of a front frame and a back frame, and FIG. 6 is a view showing a state in which the electric wheelchair is separated and folded according to an exemplary embodiment of the present invention.

As shown, the electric wheelchair 100 according to the present invention is largely the front frame 110, seat frame 120, back frame 130, the driving device 170, elevating device 180 and the operation unit 190 Is made of.

First, the front frame 110 is provided with a front wheel 112 that is hinged to the front side is rotatable.

Then, the rear side of the front frame 110 is formed to be inclined downwardly, the auxiliary wheel 117 is provided at the end.

In addition, the front frame 110 is composed of a pair of symmetrical and separated from each other, and is folded by the first folding portion 140.

In addition, the front frame 110 is bent in a 'b' shape is made of a horizontal portion and a vertical portion.

The first folding portion 140 is provided on both sides of the front frame 110, respectively, coupled to the first carrier 142 so as to slide in the longitudinal direction of the front frame 110, and the first carrier 142 One end is hinged, the other end is hinged to the other side of the front frame 110, the center is composed of a pair of first folding bar 144 hinged by the hinge axis 143.

The first folding bar 144 has a structure in which both sides thereof are symmetrical with respect to the hinge axis 143 because the center is connected by the hinge axis to constitute a bar having an 'X' shape.

The first folding part 140 is provided at the front side and the rear side of the front frame 110, respectively. That is, it is a structure that is provided at the front end of the horizontal portion and the upper end of the vertical portion, respectively, and at the same time folding a pair of front frame 110.

In addition, the seat frame 120 is coupled to the front frame 110 to be lowered and provided with a seat 114 so that the user can be seated.

In addition, the vertical portion of the seat frame 120 is provided with a backrest 116 supporting the user's back.

Seat 114 and the backrest 116 is made of a fiber to enable the folding operation of the front frame 110 and seat frame 120.

The seat frame 120 is a pair of symmetrical and separated from each other like the front frame 110, and is folded by the second folding portion (145).

Then, the sheet frame 120 is bent in a 'b' shape is made of a horizontal portion and a vertical portion.

The second foldable part 145 has the same structure as the first foldable part 140, which is provided on both sides of the seat frame 120 and is coupled to be slidable in the longitudinal direction of the seat frame 120. A pair of second hinges, one end of which is connected to the conveying body 146 and the second conveying body 146, the other end of which is hinged to the other side of the seat frame 120, and the center of which is hinged by the hinge axis 147. It consists of a folding bar 148.

The second folding bar 148 is made of the same structure as the first folding portion 140 to fold the front frame 110, it is provided in the center portion of the seat frame 120.

And, the back frame 130 is detachably coupled to the rear side of the front frame 110, the driving wheel 132 is provided.

The front frame 110, seat frame 120 and back frame 130 is made of a rod type.

The back frame 130 is coupled to the rear side of the front frame 110 by a detachable part 150.

Detachable portion 150 is formed protruding to the rear side of the front frame 110 is inserted into the back frame 130, the insertion rod 152, and the insertion rod 152 is inserted into the back frame 130 after the insertion rod ( 152 and a screw fastening portion 154 having a thread formed so as to connect to the outer peripheral surface of the back frame 130, and a fixing holder 156 provided on the back frame 130 to form a thread on the inner peripheral surface.

The back frame 130 has a hollow tubular shape so that the insertion rod 152 can be inserted therein.

Insertion rod 152 has a stepped 153 is formed in the tip portion is inserted into the back frame 130 to the stepped 153, the outer peripheral surface and the back frame of the insertion rod 152 not inserted into the back frame 130 ( On the outer circumferential surface of 130, threads are successively formed to form the screw fastening portion 154.

In addition, the fixing holder 156 is not separated by the separation preventing member 160 from the back frame 130.

The separation preventing member 160 is a locking projection 162 protruding on the inner surface of the fixing holder 156, and the separation preventing groove formed by being recessed at the tip of the back frame 130 so that the locking projection 162 is accommodated therein. 164).

In addition, the back frame 130 is provided with a driving device 170 for providing a driving force to the driving wheel 132.

The driving device 170 includes a battery 172 seated on the back frame 130 and a driving motor unit 174 electrically connected to the battery 172 to transfer power to the driving wheel 132, respectively. .

The drive motor unit 174 is composed of a drive motor 176 and a reduction unit 178 that is directly connected to the drive wheel 132 to transmit the rotation of the drive motor 176.

Then, the elevating device 180 is provided in the front frame 110 to elevate the seat frame 120.

The lifting device 180 is mounted on the screw 182 fixed in the vertical direction of the front frame 110 and the lifting motor 184 and the screw 182 to rotate by transmitting power to the screw 182. Is coupled to each other, one side is fixed to the seat frame 120 is configured to include a conveying bracket 186 is moved up and down on the screw 182 when the screw 182 is rotated to raise and lower the seat frame 120 .

The screw 182 is connected to the upper and lower ends by a bracket to the vertical bar of the front frame 110, both ends are connected to the bracket by a bearing to be rotatably provided.

In addition, the lifting motor 184 is preferably provided below the screw 182.

In addition, one side of the transfer bracket 186 is formed with a guide groove 187 connected to slide on the front frame 110.

That is, the conveying bracket 186 is fixed to the seat frame 120 and at the same time to form a guide groove 187 on the back surface to seat the vertical portion of the front frame 110, accurate linear movement when the seat frame 120 is raised and lowered Guide them to

Furthermore, the front frame 110 and the seat frame 120 are coupled by the guide block 195 to guide the sliding.

The guide block 195 is characterized in that the one side is formed with a fixing groove 196 is fixed on the seat frame 120, the other side is formed with a sliding groove 197 in which the front frame 110 is seated and slides.

In addition, the front frame 110 is provided with an operation unit 190 for applying an operation signal to the driving device 170 and the lifting device 180.

The operation unit 190 is provided on the front frame 110 but is provided on the front side of the arm rest provided on the seat frame 120 to operate an operation to be performed.

As shown in the drawing, the operation unit 190 preferably includes an operation button 192 and an operation lever 194.

And, the rear side of the front frame 110 is characterized in that the removable handle 118 is formed.

The handle 118 is coupled to the top of the rear vertical portion of the front frame 110, it is detachable in a way that is fitted in the rod type.

In addition, the back frame 130 is characterized in that the removable handle 138 is formed.

Hereinafter, the operation and effects of the electric wheelchair according to the preferred embodiment of the present invention.

First, the front frame 110 is provided with a front wheel 112 on the front side, the rear side is inclined downwardly and is provided with an auxiliary wheel 117 to push the companion by the handle 118, the basic use of the wheelchair is possible Do.

On the other hand, when the user wants to move by the drive unit 170 by electric drive, the front frame 110 and the back frame 130 is coupled by the detachable portion 150.

After the insertion rod 152 formed on the rear side of the front frame 110 is inserted into the back frame 130, by rotating the fixing hold 156 to the screw fastening portion 154, to secure the coupling.

In the above state, the seat 114 is seated. Since the seat frame 120 can move up and down in the front frame 110, the user is seated after placing the seat frame 120 at the bottom of the front frame 110. .

Unlike in the past, in order to be seated on a seat provided at a certain height, there was an inconvenience in that the user had to make a lot of effort and effort in order to climb to a certain height. Since it can be seated afterwards, it has the advantage of being able to sit without difficulty.

After seating by the user, the operation button 192 of the operation unit 190 is operated to raise the seat frame 120 to a certain height.

At this time, when the operation signal is applied by the operation button 192, the elevating motor 184 is operated and the screw 182 is rotated by the rotation of the elevating motor 184, connected by the transfer bracket 186 The seat frame 120 is raised to position the seat 114 at a predetermined height.

The front frame 110 and the seat frame 120 are coupled by the guide block 195 and guided in the vertical direction when the seat frame 120 is moved up and down.

In the above state, the user can move to a desired place by operating the operation lever 194 of the operation unit 190.

Each driving motor 176 is operated by the operation lever 194, and the power of the driving motor 176 is transmitted to the driving wheel 132 via the reduction gear 178 to move the entire wheelchair 100. do.

At this time, the driving motor 176 for transmitting power to the driving wheel 132 provided on both sides are provided, respectively, the front motor 112 is rotatably hinged to the front side of the front frame 110 is provided with the driving motor By the operation of 176, the direction of travel can be selected.

That is, when the right driving wheel 132 is operated, the electric wheel chair 100 is turned left, and when the left driving wheel 132 is operated, it is turned right.

When the user reaches the destination to move, by operating the operation button 192 of the operation unit 190 to lower the seat frame 120 by the rotation of the screw 182, the user can get off the wheel chair 100 without difficulty. It is.

On the other hand, when the wheelchair 100 is to be stored or loaded on a vehicle, the existing wheelchair maintains its volume as it is, space utilization is reduced, and there is a problem that can not be loaded on the vehicle, the electric wheelchair 100 of the present invention is the front As the frame 110 and the back frame 130 are separated by the detachable part 150, the volume may be reduced and stored.

In addition, the front frame 110 and the seat frame 120 is folded by the first folding portion 140, the second folding portion 145, respectively, there is an advantage that can reduce the overall volume (see Fig. 6). )

Looking at the operation by the folding unit (140,145), after separating the back frame 130 is coupled to the rear side of the front frame 110 to fold the front frame 110 and the seat frame 120 formed in pairs to face each other. do.

The front frame 110 is folded by the first folding unit 140, the first carrier 142 is moved in the longitudinal direction of the front frame 110, one side is hinged to the first carrier 142 On the other side, the first folding bar 144 hinged to the front frame 110 is folded around the hinge shaft 143 in the center to perform a folding operation.

And, the seat frame 120 is folded by the second folding part 145, the same operation principle as the first folding part 140 by the second carrier 146 and the second folding bar 148. The seat frame 120 is to be folded.

At this time, the seat 114 and the backrest 116 provided in the seat frame 120 is made of a collapsible material such as cloth and is folded as the seat frame 120 is folded.

As described above, the front frame 110 and the seat frame 120 are folded by the first and second folding parts 140 and 145, and the back frame 130 is separated from the driving device 170 provided in the back frame 130. Drive wheel 132 is to be stored separately.

In addition, the back frame 130 is also provided with a handle 138 like the front frame 110 to move the back frame 130 provided with a relatively heavy driving device 170 by the handle 138. .

 Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims.

1 is a perspective view showing a state in which the front frame and the back frame of the electric wheelchair according to an embodiment of the present invention is disassembled.

2 is a side view of FIG. 1;

Figure 3 is a perspective view of the combined electric wheelchair according to an embodiment of the present invention.

Figure 4 is a side view showing a state of operation by the elevating device of the electric wheelchair according to an embodiment of the present invention.

Figure 5 is a view showing the detachable portion of the front frame and the back frame of the electric wheelchair according to an embodiment of the present invention.

Figure 6 is a view showing a state in which the electric wheelchair separated and folded in accordance with an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: electric wheelchair 110: front frame

112: front wheel 114: seat

116: backrest 117: auxiliary wheel

118, 138: handle 120: seat frame

130: back frame 132: drive wheel

140: first folding portion 142: first carrier

144: first folding bar 145: second folding part

146: second carrier body 148: second folding bar

150: removable portion 152: insertion rod

154: screw connection 156: fixed holder

160: separation prevention member 162: locking projection

164: departure prevention groove 170: drive device

172: battery 174: driving motor part

176: drive motor 178: reduction gear

180: lifting device 182: screw

184: lifting motor 186: transfer bracket

187: guide groove 190: control panel

192: operation button 194: operation lever

195: guide block 196: fixing groove

197: Slide groove

Claims (16)

A front frame hinged at a front side and provided with a rotatable front wheel; A seat frame coupled to the front frame so as to be lowered and provided with a seat so as to be seated by a user; A back frame detachably coupled to a rear side of the front frame and provided with a driving wheel; A driving device provided in the back frame and providing a driving force to the driving wheel; An elevating device provided in the front frame and elevating the seat frame on the front frame; It is provided in the front frame and includes an operation unit for applying an operation signal to the drive device and the lifting device, The back frame is characterized in that coupled to the rear side of the front frame by a detachable portion, the detachable portion is formed protruding to the rear side of the front frame is inserted into the back frame; A screw fastening portion having a thread formed to be connected to an outer circumferential surface of the back rod and the insertion rod after the insertion rod is inserted into the back frame; And a fixed holder provided on the back frame and having a screw thread formed on an inner circumferential surface thereof. The method of claim 1, The front frame, seat frame and back frame is an electric wheelchair characterized in that the rod type. The method of claim 1, An electric wheel chair, characterized in that the auxiliary wheel is provided on the rear side of the front frame. The method of claim 1, The front frame is composed of a pair of symmetrical and separated from each other, and folded by the first folding portion; The seat frame is made of a pair of symmetrical separated from each other, the electric wheelchair characterized in that the folding by the second fold. The method of claim 4, wherein A first transporting body provided at both sides of the front frame and coupled to the first folding part so as to slide in the longitudinal direction of the front frame; An electric wheelchair comprising a pair of first folding bars, one end of which is hinged to the first transfer member, the other end of which is hinged to the other side of the front frame, and the center of which is hinged. The method of claim 4, wherein A second transfer member provided on both sides of the seat frame and coupled to the second folding part so as to slide in a longitudinal direction of the seat frame; An electric wheelchair comprising a pair of second folding bars, one end of which is hinged to the second conveying body, the other end of which is hinged to the other side of the seat frame, and the center of which is hinged. delete delete The method of claim 1, The fixed holder further comprises a departure prevention member for preventing the departure from the back frame. The method of claim 9, The release preventing member is a locking projection protruding on the inner surface of the fixed holder; Electric wheel chair, characterized in that consisting of the separation prevention recess formed in the front end of the back frame so that the engaging projection is received. The method of claim 1, The driving device includes a battery seated on the back frame; An electric wheel chair electrically connected to the battery and including a drive motor unit for transmitting power to the drive wheel, respectively. The method of claim 1, The lifting device includes a screw fixed in the vertical direction of the front frame; A lifting motor which rotates by transmitting power to the screw; And One side is coupled to the coupling on the screw, the other side is fixed to the seat frame and the electric wheel chair including a transfer bracket for moving up and down on the screw to move the seat frame up and down when the screw is rotated. The method of claim 12, One side of the transfer bracket is an electric wheelchair characterized in that the guide groove is formed to be connected to slide on the front frame. The method of claim 1, The front frame and the seat frame are coupled by a guide block to guide the sliding; The guide block is formed on one side of the fixed groove is fixed on the seat frame, the other side of the electric wheel chair characterized in that the sliding groove is formed by sliding the front frame is seated. The method of claim 1, The rear side of the front frame is an electric wheelchair characterized in that the removable handle is formed. The method of claim 1, The backwheel is a removable wheelchair is characterized in that the removable handle is formed.

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