KR102278036B1 - Electric wheelchair - Google Patents

Abstract

An electric wheelchair according to an embodiment of the present invention is provided with a battery, the first module comprising a seating portion on which a person is seated; and a second module detachably coupled to the first module and provided with a motor generating driving force, wherein when the first module and the second module are coupled, the power of the battery is transmitted to the motor The motor is driven.

Description

Electric wheelchair {ELECTRIC WHEELCHAIR}

The present invention relates to an electric wheelchair.

BACKGROUND ART In general, a wheelchair refers to a chair with wheels so that a person with disabilities, the elderly, and people with limited legs or physical disabilities can move to a desired place in a sitting state.

Such a wheelchair is classified into a manual wheelchair in which a user manually drives the wheel and an electric wheelchair in which the wheel is driven by an electric motor according to the driving method thereof.

In a conventional manual wheelchair, wheels are provided on both sides of the seat part so that a user can ride, and a ring member is provided to rotate the wheel, and the entire wheelchair can be rotated by a simple operation of folding the seat using a separate lever. It has been reduced in size so that it can be mounted on a vehicle.

On the other hand, the electric wheelchair is difficult to separate because the seat part, the frame, and the driving device are combined in a complex structure, and therefore there is a problem that the vehicle cannot be mounted.

In order to solve this problem, the prior document Korean Patent Laid-Open Publication No. 10-2017-0109286 (September 29, 2017) discloses a detachable and foldable electric wheelchair.

The electric wheelchair disclosed in the prior literature includes a frame provided with wheels and a motor, and a seat portion installed on the frame and provided for a person to sit on. And, the frame is configured to be separated from the seat portion.

However, the electric wheelchair disclosed in the prior document has the following problems.

First, the conventional electric wheelchair only discloses that the seat portion and the frame are simply separated, and there is a problem that the volume cannot be greatly reduced in storage after separation.

Second, since heavy parts such as wheels, motors, and batteries (accumulators) are concentrated in the conventional electric wheelchair frame, there is a problem that the load of the frame is not evenly distributed even when the frame and the seat are separated. Therefore, there was a problem in that the storage and loading of the frame is difficult.

1. Publication number (disclosure date): 10-2017-0109286 (September 29, 2017) 2. Title of invention: Detachable and collapsible electric wheelchair.

The present invention has been proposed to improve the above problems, and an object of the present invention is to provide an electric wheelchair in which the weight of the first module and the second module can be evenly distributed when the electric wheelchair is separated.

Another object of the present invention is to provide an electric wheelchair that can be easily combined and separated from the first module and the second module constituting the electric wheelchair, and can be easily stored and loaded after separation.

Another object of the present invention is to provide an electric wheelchair in which the first module and the second module can be physically and electrically safely coupled.

Another object of the present invention is to provide an electric wheelchair that can improve the stability when driving the electric wheelchair.

An electric wheelchair according to an embodiment of the present invention for achieving the above object is provided with a battery, and a first module including a seating part on which a person is seated, and the first module and detachably coupled to the first module, the driving force By including the second module provided with a generating motor, the weight of the first module and the second module can be evenly distributed, so there is an advantage of easy separation and transfer of the electric wheelchair.

Also, the first module may include a front frame supporting the seating unit, and the second module may include a rear frame supporting the motor.

At this time, the front frame and the rear frame are each formed in a closed curve with an empty interior, and the width of the front frame is formed smaller than the width of the rear frame, so that a part of the front frame can be drawn into the inside of the rear frame Therefore, there is an advantage of easy storage and loading after separation of the electric wheelchair.

In addition, the front frame may be slidably coupled to the inside of the rear frame. For example, the front frame is formed with a slide groove for slidingly coupled to the inside of the rear frame, and a slide protrusion inserted into the slide groove is formed in the rear frame, thereby combining the first module and the second module. and assembly can be simplified.

In addition, the front frame may include a first frame in which the seating unit is installed, a second frame bent downward from both sides of the first frame, and a third frame connecting respective ends of the second frame. .

In this case, the slide groove may be formed on the outer surface of the first frame, and the seating unit may be coupled to the inner side of the first frame.

In addition, the seating part may include a seat part and a seat cover coupled to a lower side of the seat part, and the battery may be disposed inside the seat cover.

The second module further includes a connection plate coupled to the rear frame and electrically connecting the battery and the motor.

When the front frame and the rear frame are coupled to each other, the seat cover and the connection plate may be in contact to electrically connect the battery and the motor.

Specifically, the connection plate may include a base and a base cover coupled to the base to form an accommodating space therein, and a connection terminal for electrically connecting the battery and the motor to the base cover may be provided.

In addition, a connection groove for electrically connecting the connection terminal to the battery may be formed on a lower surface of the seat cover.

And the connection plate is hinged to the base or the base cover and further includes a locking lever for fixing the seat cover, thereby firmly maintaining the coupling between the first module and the second module.

The locking lever includes a hinge portion hinged to the base, a grip portion extending to one side from the hinge portion and gripped by a user, and a locking portion extending upwardly from the grip portion and selectively coupled to the inside of the seat cover may include wealth.

A pair of main wheels may be mounted on both sides of the rear frame, respectively, and the motor may be disposed inside the main wheel.

In addition, the second module may further include a control box for controlling the motor, and the control box may be installed on the rear frame between the pair of main wheels.

According to the electric wheelchair according to the embodiment of the present invention having the configuration as described above, there are the following effects.

First, the electric wheelchair includes a first module provided with a battery, and a second module provided with a motor. At this time, since the first module and the second module are provided to be separated, the weight of the first module and the second module can be evenly distributed, so that the separation and transfer of the electric wheelchair is easy.

Second, the first module includes a front frame that supports the seat portion, and the second module includes a rear frame that supports the motor. At this time, the front frame and the rear frame are each formed in a closed curve with an empty interior, and by having a structure in which a part of the front frame is drawn into the inside of the rear frame, it is easy to store and load the electric wheelchair after separation there is this

Third, since the front frame is provided to be mounted and detached in a sliding coupling manner on the inside of the rear frame, there is an advantage in that the coupling and assembly of the first module and the second module is simplified.

Fourth, the rear frame is provided with a connection plate for electrically connecting the battery provided in the first module and the motor provided in the second module, so that the first module and the second module can be physically and electrically safely coupled. have.

Fifth, the connection plate is provided with a locking lever for fixing the seat portion by the user's manipulation, so that the coupling between the first module and the second module can be firmly maintained. Therefore, there is an advantage in that the stability of the electric wheelchair is improved.

1 is a front perspective view of an electric wheelchair according to an embodiment of the present invention.
Figure 2 is a rear perspective view of the electric wheelchair according to the embodiment of the present invention.
3 is a side view of an electric wheelchair according to an embodiment of the present invention;
4 is a longitudinal cross-sectional view of an electric wheelchair according to an embodiment of the present invention.
5 is a view showing a connection plate according to an embodiment of the present invention.
6 is a longitudinal cross-sectional view of a connecting plate according to an embodiment of the present invention;
7 is a front perspective view showing a state in which a first module and a second module are separated according to an embodiment of the present invention;
8 is a rear perspective view showing a state in which a first module and a second module are separated according to an embodiment of the present invention;
9 is a view showing a state in which a first module and a second module are superimposed in a separated state according to an embodiment of the present invention;
10 is a view showing a state in which a first module and a second module are superimposed in a separated state according to another embodiment of the present invention;

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of the drawings, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

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

Fig. 1 is a front perspective view of an electric wheelchair according to an embodiment of the present invention, Fig. 2 is a rear perspective view of an electric wheelchair according to an embodiment of the present invention, and Fig. 3 is a side view of the electric wheelchair according to an embodiment of the present invention, 4 is a longitudinal cross-sectional view of an electric wheelchair according to an embodiment of the present invention.

1 to 4 , the electric wheelchair 10 according to the present invention largely includes a first module 100 and a second module 200 coupled to the first module 100 .

The first module 100 may be arranged in front of the electric wheelchair 10 , and the second module 200 may be arranged in the rear of the electric wheelchair 10 . And the first module 100 and the second module 200 may be detachably coupled.

Here, "front" means a direction in which the electric wheelchair 10 faces when driving, and "rear" may be understood as a direction opposite to the front.

Since the first module 100 is arranged in front of the electric wheelchair 10, it is defined as a front module, and since the second module 200 is arranged in the rear of the electric wheelchair 10, it can be defined as a rear module. have.

The first module 100 is a part provided with a seating unit 120 that allows a person to actually sit. And the first module 100 includes a battery 123 . The battery 123 may be provided inside the seating unit 120 .

The second module 200 is a part provided with a plurality of parts for the driving of the electric wheelchair 10 . The second module 200 includes a main wheel 230 provided with a motor 231 for driving.

In general, an electric wheelchair can be understood as one of the heaviest parts with a battery and motor. Corresponding to this, in the present invention, by arranging the battery 123 in the first module 100 constituting the electric wheelchair 10 and arranging the motor 231 in the second module 200, the first module 100 And when the second module 200 is separated, the weight of each module may be distributed at an equal or similar level. Accordingly, there is an advantage that transport and loading are facilitated when the electric wheelchair 10 is separated.

Specifically, the first module 100 may include a front frame 110 , a seating unit 120 coupled to one side of the front frame 110 , and a leg rest unit 130 coupled to the other side of the front frame 110 . .

The front frame 110 is disposed in front of the electric wheelchair 10, and can support its weight when a person is seated on the electric wheelchair 10. The front frame 110 may be formed in a closed curve with an empty interior.

A seating part 120 may be disposed on the upper portion of the front frame 110 , and a leg rest 130 may be disposed on a lower portion of the front frame 110 .

According to one embodiment, the front frame 110 includes a first frame 111 supporting the seating unit 120 and a second frame 112 bent downward from both sides of the first frame 111 , respectively. ) and a third frame 113 connecting each end of the second frame 112 .

The first frame 111 , the second frame 112 , and the third frame 113 may be integrally formed.

The first frame 111 may be formed to surround the circumference of the seating unit 120 . That is, the first frame 111 may be formed in a hollow shape so that the seating part 120 can be inserted therein.

At this time, a portion of the inner surface of the first frame 111 is fixed to both sides of the seating part 120, so that even when a load is applied to the seating part 120, the seating part 120 moves to the first frame ( 111) can be prevented.

For example, the first frame 111 may be formed in a “C” shape. In addition, the seating part 120 may be inserted and fixed inside the first frame 111 . Accordingly, it can be seen that the first frame 111 covers both side surfaces and the rear surface of the seating unit 120 .

Also, the first frame 111 includes a slide groove 111a.

The slide groove 111a is a part for sliding and coupling the first module 100 to the second module 200 . The slide groove 111a may be inserted into the slide protrusion (refer to 213 of FIG. 7 ) provided in the second module 200 to be coupled to the inside of the second module 200 .

The slide groove 111a may be formed by being depressed inwardly from the outer surface of the first frame 111 . For example, the slide grooves 111a may be respectively formed on both sides of the first frame 111 . The slide grooves 111a may be elongated in the front-rear direction on both sides of the first frame 111 .

In addition, the slide groove 111a may be formed not only on both sides of the first frame 111 , but also on the rear surface of the first frame 111 . In this case, the slide grooves 111a may be connected to each other to form one slide groove 111a.

With this configuration, the first module 100 is able to slide and move in the front-rear direction from the inside of the second module 200 and can be coupled.

The second frame 112 is a portion bent downward from both sides of the first frame 111, respectively. The second frame 112 may be formed to be rounded downward from the front end of the first frame 111 .

In this case, the second frame 112 includes a front extension part 112a extending from the first frame 111 toward the front, and a rear extension part extending toward the rear from the end of the front extension part 112a ( 112b).

That is, the front extension 112a and the rear extension 112b may extend in different directions. Since the front extension part 112a and the rear extension part 112b are formed to be rounded in different directions, the overall volume of the front frame 110 may be reduced.

Meanwhile, as shown in FIG. 3 , an angle A between the first frame 111 and the first extension 112a may be, for example, 120 degrees. Also, the angle B formed between the first extension part 112a and the second extension part 112b may be designed to be greater than 90 degrees and smaller than 120 degrees.

That is, the angle A between the first frame 111 and the first extension 112a and the angle between the first extension 112a and the second extension 112b form an obtuse angle. By doing so, the volume of the front frame 110 can be minimized.

The third frame 113 connects each end of the second frame 112 . The third frame 113 is formed to be elongated in the horizontal direction and can support the leg rest 130 to be described later.

The seating unit 120 is coupled to the inside of the front frame 110 and is configured so that a person can sit.

The seating unit 120 includes a seat 121 and a seat cover 122 coupled to a lower side of the seat 121 .

The seat 121 is a part in contact with the buttocks when a person is seated and may be formed of a soft and elastic material.

The seat cover 122 is a portion supporting the seat 121 and is coupled to the lower side of the seat 121 . The seat cover 122 may be coupled to the inside of the front frame 110 . For example, the seat cover 122 may be fastened to the inner surface of the first frame 111 by a fastening member.

In addition, a battery 123 is disposed in the seating unit 120 . The battery 123 may provide power to the control box 240 and the motor 231 to be described later.

Specifically, the battery 123 may be disposed inside the seat cover 122 . To this end, the seat cover 122 may form an accommodating space in which the battery 123 can be accommodated.

The battery 123 may provide power to the second module 200 when the seat cover 122 is coupled to the second module 200 . To this end, the seat cover 122 may be provided with a connection groove 122a into which a connection terminal (refer to 274 of FIG. 5 ) provided in the second module 200 is inserted.

The connection groove 122a may be formed on a lower surface of the seat cover 122 . When the connection terminal 274 is inserted into the connection groove 122a , the power of the battery 123 may be transmitted to the motor 231 of the second module 200 through the connection terminal 274 . .

The leg rest 130 is rotatably coupled with respect to the front frame 110 while supporting a person's legs or feet.

The leg rest 130 includes a footrest unit 131 for supporting a person's foot, and a connection unit 132 for connecting the footrest unit 131 to the front frame 110 .

The footrest part 131 is formed to have a predetermined area so that both feet of a person can be seated therein. In addition, one end of the connection part 132 is coupled to the footrest part 131 , and the other end is hinge-coupled to the front frame 110 . Accordingly, the leg rest 130 may be rotated to be folded inside the front frame 110 by the connection part 132 .

In addition, the first module 100 further includes an auxiliary wheel 140 .

The auxiliary wheel 140 is coupled to one side of the front frame 110 to assist movement or driving of the electric wheelchair 10 . Specifically, the auxiliary wheel 140 is formed in plurality and may be provided at both lower ends of the second frame 122 , respectively. The auxiliary wheel 140 may include a caster.

Meanwhile, the second module 200 includes a rear frame 210 , a backrest 220 coupled to one side of the rear frame 210 , and a main wheel 230 coupled to the other side of the rear frame 210 . ) may be included.

The rear frame 210 is disposed at the rear of the electric wheelchair 10 , and supports parts for driving of the electric wheelchair 10 . The rear frame 210 may be formed in a closed curve with an empty interior.

In addition, the backrest 220 may be disposed on the upper portion of the rear frame 210 , and the main wheel 230 may be disposed on the lower portion of the rear frame 210 .

According to an embodiment, the rear frame 210 includes an upper frame 211 supporting the backrest 220 , and a lower portion connected to a lower portion of the upper frame 211 and supporting the main wheel 230 . It may include a frame 212 .

The upper frame 211 and the lower frame 212 may be integrally formed. In addition, the upper frame 211 and the lower frame 212 may be connected to each other to form a single closed curve.

The upper frame 211 may be formed in a "C" shape, for example, and may be disposed to be inclined rearward. The upper frame 211 may extend toward the front as it goes down.

In addition, the backrest 220 may be installed on the upper portion of the upper frame 211 . The backrest 220 may be installed on an upper inner surface of the upper frame 211 .

The lower frame 212 further extends downwardly from both lower portions of the upper frame 211 . Specifically, the lower frame 212 may extend from both lower ends of the upper frame 211 toward the rear and the lower side of the electric wheelchair 10 .

Meanwhile, referring to FIG. 3 , the angle C formed between the upper frame 211 and the lower frame 212 may be designed to be greater than 90 degrees and smaller than 120 degrees. That is, the angle C formed between the upper frame 211 and the lower frame 212 may be designed as an obtuse angle.

In addition, a slide protrusion 213 may be formed on the rear frame 210 .

The slide protrusion 213 is inserted into the slide groove 111a of the front frame 110 so that the front frame 110 can be coupled to the rear frame 210 .

The slide protrusion 213 may be formed to protrude from both inner surfaces of the rear frame 210 , respectively. The slide protrusion 213 may be formed in a straight line in the front-rear direction.

The slide protrusion 213 may be provided at a portion where the upper frame 211 and the lower frame 212 are connected. Alternatively, the slide protrusion 213 may be provided in a boundary region between the upper frame 211 and the lower frame 212 .

Accordingly, since the first frame 111 may be coupled to a portion corresponding to the middle height of the rear frame 210, the front frame 110 and the rear frame 210 may be stably coupled, and the The height of the seating unit 120 can be easily adjusted.

The backrest 220 includes a seat 221 and a seat cover 222 coupled to the rear surface of the seat 221 .

The seat 221 is a portion in contact with the back when a person is seated on the seating portion 120 and may be formed of a soft and elastic material.

The seat cover 222 is a part supporting the seat 221 and is coupled to the rear surface of the seat 221 . The seat cover 222 may be coupled to the inner side of the rear frame 210 .

Specifically, the seat cover 222 may be coupled to the upper end of the upper frame 211 . For example, the seat cover 222 may be fastened to the inner surface of the upper frame 211 by a fastening member.

The main wheel 230 is configured to allow the electric wheelchair 10 to substantially run. The main wheel 230 is provided on both lower sides of the rear frame 210 and supports the load of the electric wheelchair 10 . The main wheel 230 has a larger diameter than that of the auxiliary wheel 140 .

Specifically, the main wheels 230 are formed as a pair and may be respectively installed on both lower sides of the lower frame 212 . The main wheel 230 may include a motor 231, a rotating shaft, an in-wheel, and a tire.

The motor 231 includes a stator, a rotor, a magnet, and the like, and generates a driving force to rotate the in-wheel.

The rotating shaft may be coupled to the inside of the rotor and transmit the driving force generated by the motor 231 to the in-wheel side.

The in-wheel may be rotated by being coupled to the rotation shaft and receiving a driving force generated by the motor 231 .

The tire may be coupled to the outside of the in-wheel and elastically support the electric wheelchair 10 from the ground.

In addition, the second module 200 may further include a control box 240 for controlling the motor 231 .

The control box 240 may be installed under the rear frame 210 .

Specifically, the control box 240 is disposed at the lower end of the lower frame 212 . The control box 240 has a substantially rectangular shape and is provided inside the lower frame 212 .

At this time, as shown in FIG. 3 , the control box 240 may be disposed such that its side is covered by the lower frame 212 . That is, the control box 240 is disposed to be inclined corresponding to the angle at which the lower frame 212 is inclined. Therefore, when the electric wheelchair 10 is viewed from the side, since the exterior of the control box 240 has a hidden structure, there is an advantage in that the appearance of the electric wheelchair 10 is neat when driving.

The control box 240 may include a box case 241 forming an exterior and a plurality of electronic components 242 provided inside the box case 241 .

In addition, the second module 200 may further include an armrest part 250 .

The armrest part 250 is a part that supports an arm or a hand when a person is seated.

The armrest part 250 has a triangular shape, and may be respectively coupled to both sides of the rear frame 210 . The armrest part 250 may be rotatably provided on both sides of the rear frame 210 .

In addition, the second module 200 may further include a controller 260 .

The controller 260 is understood as a configuration that allows the user to operate the driving of the electric wheelchair 10 . The controller 260 may include a display unit, a button unit, a joystick unit, and the like.

In addition, the second module 200 may further include a connection plate 270 .

The connection plate 270 may be understood as a configuration for electrically connecting the first module 100 and the second module 200 .

When the connection plate 270 and the first module 100 are connected, the power of the battery 123 of the first module 100 is supplied to the motor 231 and the electronic component 242 of the second module 200 . ) can be provided.

In addition, the second module 200 may further include a basket mounting part 280 .

The basket mounting unit 280 is a portion for mounting a basket capable of storing belongings and the like. The basket mounting part 280 may be provided inside the rear frame 210 .

Specifically, the basket mounting part 280 may be formed to protrude from both inner surfaces of the lower frame 212 , respectively. The basket mounting part 280 may be elongated in the front-rear direction on the inner surface of the lower frame 212 .

The basket may be mounted by fastening a fastening member to the basket mounting part 280 . Alternatively, a portion of the basket may be mounted by being engaged with the basket mounting part 280 .

5 is a view showing a connection plate according to an embodiment of the present invention, and FIG. 6 is a longitudinal cross-sectional view of the connection plate according to an embodiment of the present invention.

4 to 6 , the connection plate 270 may be coupled to the rear frame 210 to be selectively connected to the first module 100 .

Specifically, the connection plate 270 is formed to be elongated in the horizontal direction, so that both ends may be coupled to both inner surfaces of the lower frame 212 , respectively. And when the front frame 110 is slid to the inside of the rear frame 210 and coupled, the seat cover 122 and the connection plate 270 may be physically and electrically connected.

According to one embodiment, the connection plate 270 includes a base 271 and a base cover 272 coupled to the base 271 .

The base 271 forms a bottom surface of the connection plate 270 , and the base cover 272 is coupled to an upper side of the base 271 . The base cover 272 is coupled to the base 271 to form a predetermined internal space 273 therein.

The connection plate 270 may further include a connection terminal 274 .

The connection terminal 274 is configured to electrically connect the battery 123 provided in the seat cover 122 , the control box 240 and the motor 231 .

The connection terminal 274 may be inserted into the connection groove 122a provided in the seat cover 122 . When the connection terminal 274 is inserted into the connection groove 122a, the power of the battery 123 may be provided to the control box 240 and the motor 231 side.

At this time, an electric wire is provided inside the rear frame 210 . One end of the electric wire may be connected to the control box 240 and the motor 231 , and the other end may be connected to the connection terminal 274 .

For example, the connection terminal 274 is installed in the accommodation space 273 , and a part thereof may protrude toward the upper surface of the base cover 272 . When the connection terminal 274 is exposed to the upper side of the base cover 272 , the connection terminal 274 may be inserted into and coupled to the connection groove 122a provided on the lower surface of the seat cover 122 . .

In addition, the connection plate 270 may further include a locking lever 275 .

The locking lever 275 is configured to lock the coupling of the first module 100 and the second module 200 . The reason why the locking lever 275 is necessary is that the coupling between the first module 100 and the second module 200 may be released due to shock and shaking when the electric wheelchair 10 is driven.

Specifically, the locking lever 275 includes a hinge portion 275a hinged to one side of the connection plate 270 , a grip portion 275b extending forward from the hinge portion 275a , and the grip portion It may include a locking portion (275c) extending upwardly from (275b).

The hinge part 275a is hingedly coupled to one side of the base 271 or the base cover 272 to be rotatably provided.

For example, the hinge part 275a may be hinge-coupled to the hinge guide 276 provided on the upper surface of the base 271 . In this case, a pair of hinge guides 276 are formed on the upper surface of the base 271 , and both ends of the hinge part 275a may be hinged to each of the pair of hinge guides 276 .

The grip portion 275b is formed to extend forward from one side of the hinge portion 275a. The grip portion 275b is a portion gripped by a human hand and may be formed to cover a lower side of the base 271 .

In this case, a gripping groove 277 in which at least a portion of the gripping part 275b is accommodated may be formed in the base 271 . The gripping groove 277 may be formed by cutting a portion of the base 271 .

In addition, the gripping portion 275b is disposed in the gripping groove 277 , and a part thereof may further extend downward of the gripping groove 277 . That is, the grip portion 275b is formed in a downwardly concave shape within the grip groove 277 and can be easily gripped by a user's hand.

The engaging portion 275c is formed to extend upwardly from the upper surface of the holding portion 275b. The engaging portion 275c may penetrate the upper surface of the base cover 272 and be introduced into the seat cover 122 .

In this case, the locking part 275c may be fixed to the inside of the seat cover 122 .

For example, a locking rod 122b caught on the end of the locking portion 275c is formed inside the seat cover 122, and the locking portion 275c is engaged with the locking rod 122b, The seat cover 122 and the connection plate 270 may be fixed.

The locking rod 122b may be connected by a pair of supports 122c extending downward from the upper surface of the seat cover 122 . That is, both ends of the locking rod 122b may be connected to each lower end of the pair of supports 122c.

Also, the locking rod 122b may be disposed in a space between the seat cover 122 and the connection plate 270 . The locking rod 122b may be accommodated in the depression 122d formed by the lower surface of the seat cover 122 being depressed upward. That is, the locking rod 122b may be surrounded by the base cover 272 and the locking part 275c inside the recessed part 122d.

In addition, the locking portion 275c may be formed to be round in order to facilitate engagement with the locking rod 122b. That is, the locking part 275c may be formed to extend upwardly from the holding part 275b and to be rounded backwards. And the rounded rear end of the locking portion 275c may be in contact with the locking rod 122b.

In addition, the engaging portion 275c may be released by the user in a state coupled to the engaging rod 122b.

Specifically, when the user pulls the gripping portion 275b downward, the hinge portion 275a is rotated counterclockwise and accordingly the locking portion 275c may be spaced apart from the locking rod 122b. . Then, the seat cover 122 may be in a detachable state from the connection plate 270 while the binding force between the locking part 275c and the locking rod 122b is removed.

At this time, the hinge portion 275a may be provided with a spring, and the locking portion 275c may be maintained in close contact with the locking rod 122b by the restoring force of the spring.

7 is a front perspective view showing a state in which the first module and the second module are separated according to an embodiment of the present invention, and FIG. 8 is a state in which the first module and the second module are separated according to an embodiment of the present invention It is a rear perspective view.

7 and 8 , as described above, the first module 100 and the second module 200 are configured to be separable.

According to the present embodiment, the front frame 110 of the first module 100 and the rear frame 210 of the second module 200 may each be formed in a closed curve with an empty interior.

In addition, the left and right width W1 of the front frame 110 may be formed to be smaller than the left and right width W2 of the rear frame 210 . Accordingly, a portion of the front frame 110 may be introduced into the rear frame 210 . For example, the seating portion 120 of the front frame 110 may be introduced into an inner space defining the left and right widths of the rear frame 210 .

In addition, a slide groove 111a is formed in the first module 100 , and a slide protrusion 213 inserted into the slide groove 111a is formed in the second module 200 .

The slide grooves 111a may be formed on both outer surfaces of the front frame 110 , respectively, and the slide protrusions 213 may be formed on both inner surfaces of the rear frame 210 , respectively.

Specifically, the slide protrusion 213 may be formed on any one of the upper frame 211 and the lower frame 212 constituting the rear frame 210 . Alternatively, the slide protrusion 213 may be formed at a boundary point between the upper frame 211 and the lower frame 212 .

The slide protrusion 213 may be formed in a straight line in the front-back direction of the electric wheelchair 10 . And, the slide groove 111a of the front frame 110 is fitted into the slide protrusion 213, so that the first module 100 and the second module 200 may be coupled.

Also, when the first module 100 is completely coupled to the second module 200 , the seat cover 122 may be connected to the connection plate 270 . Then, as the battery 123 of the seat cover 122 and the connection terminal 274 of the connection plate 270 are electrically connected, the power of the battery 123 is supplied to the motor 231 and the control box 240 . ) can be transferred to

9 is a view showing a state in which a first module and a second module are superimposed in a separated state according to an embodiment of the present invention.

Referring to FIG. 9 , in a state in which the first module 100 and the second module 200 are separated, the first module 100 and the second module 200 may overlap each other.

Specifically, in a state in which the rear frame 210 and the main wheel 230 of the second module 200 are supported on the ground, the first module 100 is superimposed on the upper side of the second module 200 . can

In this case, the seating unit 120 of the first module 100 may be disposed above the control box 240 of the second module 200 . In addition, the auxiliary wheel 140 of the first module 100 may be disposed above the backrest 220 of the second module 200 .

In this case, since the seating part 120 provided with the heavy battery 123 is supported on the upper side of the control box 240 , there is an advantage that it can be stably mounted.

In addition, the legrest 130 of the first module 100 can be rotated inward to be folded, and the armrest 250 of the second module 200 is rotated to reduce the volume of each module. have.

According to this configuration, the first module 100 and the second module 200 can be stored or stacked on top of each other, and there is an advantage that they can be stably mounted.

10 is a view showing a state in which a first module and a second module are superimposed in a separated state according to another embodiment of the present invention.

Referring to FIG. 10 , in a state in which the first module 100 and the second module 200 are separated, the first module 100 and the second module 200 may overlap each other.

Specifically, in a state in which the rear frame 210 and the main wheel 230 of the second module 200 are supported on the ground, the front frame 110 and the auxiliary wheel 140 of the first module 100 are It can be supported together on the ground.

In this case, the front frame 110 may be inserted into the rear frame 210 . That is, the seating unit 120 provided in the front frame 110 may be retracted to the inside of the rear frame 210 .

In this case, since the seating unit 120 provided with the heavy battery 123 is disposed as close to the ground as possible, and the main wheel 230 provided with the motor 231 is also directly supported on the ground, stable mounting is possible. There is this.

In addition, the legrest 130 of the first module 100 can be rotated inward to be folded, and the armrest 250 of the second module 200 is rotated clockwise to increase the volume of each module. can be reduced.

Therefore, by this configuration, the first module 100 and the second module 200 can be stored overlapping each other, and there is an advantage that it can be stably mounted.

Claims (17)

a first module having a battery and including a seating part; and
and a second module detachably coupled to the first module and provided with a motor for generating a driving force,
When the first module and the second module are combined, the power of the battery is transferred to the motor to drive the motor,
The first module includes a front frame supporting the seating unit,
The second module includes a rear frame that supports the motor and is detachably coupled from the inside of the front frame, and a connection plate provided in the rear frame and connected to the seating unit when the front frame and the rear frame are combined. including,
The seating portion includes a seat portion and a seat cover coupled to a lower side of the seat portion to form an accommodating space in which the battery is accommodated,
The connection plate is provided under the seat cover and includes a locking lever for fixing the seat cover,
The locking lever is
a hinge portion hinged from one side of the connection plate;
a grip portion extending from the hinge portion to one side and gripped by a user; and
Electric wheelchair, characterized in that it extends upwardly from the gripping portion comprising a locking portion selectively coupled to the inner side of the seat cover. delete The method of claim 1,
The front frame and the rear frame are each formed in a closed curve with an empty interior,
The width of the front frame is formed smaller than the width of the rear frame, a portion of the front frame can be drawn into the interior of the rear frame electric wheelchair. 4. The method of claim 3,
The front frame is an electric wheelchair, characterized in that sliding coupled to the inner side of the rear frame. 5. The method of claim 4,
A slide groove is formed in the front frame to be slidably coupled to the inside of the rear frame,
The rear frame is an electric wheelchair having a slide projection inserted into the slide groove. 6. The method of claim 5,
The front frame is
a first frame in which the seating unit is installed;
a second frame bent downward from both sides of the first frame; and
Electric wheelchair including a third frame connecting each end of the second frame. 7. The method of claim 6,
The slide groove is an electric wheelchair formed on the outer surface of the first frame. 7. The method of claim 6,
The seating unit is an electric wheelchair coupled to the inner side of the first frame. delete delete The method of claim 1,
When the front frame and the rear frame are coupled, the seat cover and the connection plate are coupled to electrically connect the battery and the motor. The method of claim 1,
The connecting plate is
Base; and
and a base cover coupled to the base to form an accommodating space therein,
The base cover is provided with a connection terminal for electrically connecting the battery and the motor. ◈Claim 13 was abandoned when paying the registration fee.◈ 13. The method of claim 12,
On a lower surface of the seat cover, a connection groove for electrically connecting the connection terminal to the battery is formed. ◈Claim 14 was abandoned at the time of payment of the registration fee.◈ 13. The method of claim 12,
The locking lever is hinged to the base or base cover to fix the seat cover. delete ◈Claim 16 was abandoned at the time of payment of the registration fee.◈ The method of claim 1,
A pair of main wheels are mounted on both sides of the rear frame, respectively,
The motor is an electric wheelchair that is disposed inside the main wheel. ◈Claim 17 was abandoned when paying the registration fee.◈ 17. The method of claim 16,
The second module further comprises a control box for controlling the motor,
The control box is an electric wheelchair that is installed on the rear frame corresponding to between the pair of main wheels.

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