KR101026760B1 - Easy driving wheel chair in stairs and slope - Google Patents

Abstract

The present invention relates to a wheelchair that is easy to run on an inclined surface and stairs, forming a support structure by the combination of the vertical and horizontal frame, the handle portion is formed on the upper side of the vertical frame and the seating portion for the occupant to the upper side It is of a rod-shaped body and an outer tube of a tubular shape formed in an arc shape of a predetermined angle range, respectively provided to be coupled to the left and right sides of the main body frame in a long position along the running direction. Sliding movement in the front and rear direction freely inserted in the outer tube and the curved moving bar is provided so that the driving wheel is freely rotatable at both front and rear ends exposed outside, coupled to the body frame or the outer tube to be freely and indirectly rotatable It is provided and rotated by the occupant And a drive pulley for causing the associated drive wheel to rotate.

Therefore, even when driving the inclined surface, regardless of the angle of the inclined surface, the seat plate on which the occupant occupies can always be in a horizontal state, and it is also possible to easily move up and down the stairs and the inclined surface, It is also possible to travel in time, providing passengers with a sense of comfort and comfort, preventing overturning or falling accidents, reducing occupants' stamina consumption, and allowing long distances to be used. It can be effective.

Wheelchair, Slope, Stairs, Leveling

Description

EASY DRIVING WHEEL CHAIR IN STAIRS AND SLOPE

The present invention relates to a wheelchair that is easy to run on slopes and stairs, and more particularly, even when the inclined surface is raised and lowered so that the occupant's body does not lean back and forth, thereby providing a sense of stability and overturning or falling. In addition to preventing the occurrence of safety accidents, it is also possible to move up and down stairs or slopes to provide convenience in use, and to apply a force for driving and to operate with a small force. It is also directed to a wheelchair that is easy to run on slopes and stairs that may be possible.

In general, a wheelchair refers to a chair provided with wheels so that a physically disabled person or a disabled person or a disabled patient and an elderly person can move while sitting.

1 shows a conventional conventional wheelchair.

Referring to the drawings, the wheelchair 10 includes a body frame 12 constituting an overall support structure, a handle portion 14 provided at both rear sides of the upper end side of the body frame 12 and used by a protector to grip and push the body, It is formed on the upper side by the horizontal and vertical support structure of the frame 12 and is provided on the seat 16 on which the occupant rests, and is freely rotatable on both the rear side of the lower side of the main body frame 12 so as to drive the ground. A drive wheel 18 having a relatively large diameter that is clouded while being in contact with the hand, and a hand rim 18a which is provided to be integrated with the outside of the drive wheel 18 so that the occupant rotates by hand to allow the drive wheel 18 to rotate together. And an auxiliary wheel 20 having a relatively small diameter, which is provided to be freely rotatable on both sides of the lower side of the main body frame 12 and is clouded while touching the ground during driving, Portion is provided on both sides of the front side it consists of a foot plate (22) such that the occupant's foot is placed.

Therefore, the driving is performed by the guardian pushing through the handle 14 from the back or by repeatedly rotating (circular movement) the hand rim 18a by a predetermined angle with the hand while the occupant is sitting on the seat 16. The drive wheel 18 and the auxiliary wheel 20 can be implemented by rolling over the ground.

However, such a conventional wheelchair 10 has the following problems.

First, the wheelchair 10 is easy to move on a flat surface, but the driving wheels 18 and the auxiliary wheels 20 are mounted in contact with the ground in line with the stepped ground or inclined ground, such as a step, such as some driving Impossible or poor safety due to the occurrence of the occupant of the occupant.

In detail, when climbing up and down slopes such as stairs and hills, the center of the occupant's body is severely tilted back and forth according to the inclination angle of the corresponding slope, causing anxiety to the occupant, and if accidentally overturned, the safety accident that falls the occupant occurs. .

This problem is a serious problem as the passengers are inconvenient to move, and occur more frequently.

As a result, the guardian has to take the inconvenience of having to manually move the wheelchair and the occupant.

Second, there is a problem that the wheelchair can not repeatedly move up the stepped stairs at all.

In detail, in the stairs, the auxiliary wheels 20 and the driving wheels 18 do not repeatedly hang on the vertical walls of the stairs, and thus the occupant suffers a great difficulty.

In addition, when the passenger is forced to climb the stairs, the occupant's body may be tilted backwards and overturned, and a very strong force must be applied to climb the stairs. In fact, you have to give up climbing stairs.

Third, the occupant repeatedly drives the hand rim 18a by a predetermined angle, and repeatedly rotates the hand rim 18a having a large diameter only by an arm force. There is a problem that is difficult and long distance operation is impossible.

In relation to this, when moving up an inclined upward slope, such an intermittent cloud manipulation does not go up properly at a time and cannot be easily pushed backward.

That is, in order to smoothly climb the upward slope, it must be possible to continuously operate the cloud.

Incidentally, at present, the wheelchair 10 cannot smoothly cross the inclined surface, the stepped surface, or the obstacle, which causes a great deal of inconvenience such as the construction of removing the threshold at home or the like.

The present invention was devised to solve the above problems, and even when driving the inclined surface, the occupant's body can be kept at a stable level at all times without being leaned to one side at all, so that the occupant feels secure and overturns. The object of the present invention is to provide a wheelchair that is easy to travel on slopes and stairs, which has no risk of falling accidents and may be convenient for use.

In addition, an object of the present invention is to provide a wheelchair which can easily run on an inclined surface and a staircase that can easily move up and down a staircase or an inclined surface.

In addition, the present invention, the force that the occupant has to apply for driving can be greatly reduced and the operation to apply the force can be carried out easily, the wheelchair is easy to run on slopes and stairs that can travel long distance by reducing the consumption of stamina The purpose is to provide.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

In order to achieve the above object, the wheelchair and the wheelchair of the present invention which are easy to run on the stairs form a supporting structure by the combination of the vertical and horizontal frames, and a handle part is formed on the upper side of the vertical frame and the occupant rides on the upper side. A main frame forming a seating portion; An outer tube which is provided in a state in which it is positioned along the driving direction and is coupled to both left and right sides of the main body frame and has an arc shape in a predetermined angle range; A curved movement bar having a rod shape having a predetermined angular range and being freely slid in the front and rear direction while being inserted into the outer tube and coupled to the front and rear ends of the front and rear ends to be freely rotatable; And a driving pulley which is coupled to the main frame or the outer tube so as to be freely and directly rotatable and rotated by a passenger to rotate the driving wheels electrically connected thereto. It includes.

Preferably, the wheelchair is easy to run the slope and the stairs of the present invention, the intermediate pulley is coupled to be freely rotatable with respect to any one end of the front and rear ends of the curved moving bar exposed to the outer tube; A driven pulley which is provided to be integrated with the driving wheel 140 provided at opposite ends on which the intermediate pulley is mounted among front and rear ends of the curved moving bar; And an endless belt electrically connecting the driving pulley, the intermediate pulley and the driven pulley. It may further include.

In addition, preferably the wheelchair of the inclined surface and the stairs of the present invention, the front and rear ends of the mounting bar which is coupled to the center of rotation of each of the driving wheels so as to be freely rotated in the vertical direction and provided in the front and rear direction elongated Auxiliary wheels coupled to be freely rotatable; It may further include.

Also preferably, the wheelchair of which the slope and the stairs of the present invention are easy to travel is a winding angle of the endless belt with respect to the drive pulley by pressing and winding the endless belt in the middle of the driven pulley and the driving pulley. Winding angle increasing pulley to increase the; It may further include.

Also preferably, the wheelchair which is easy to run the slope and the stairs of the present invention, the brake means for braking and releasing the front and rear movement of the curved movement bar with respect to the outer tube; And a brake operation unit for operatively controlling the braking action of the brake means. It may further include.

Also preferably, the wheelchair of the slope and the stairs of the present invention is easy to run, the rolling ball is provided with a plurality to be arranged in the front and rear direction between the inner surface of the outer tube and the outer surface of the curved moving bar; It may further include.

Also preferably, in the wheelchair which is easy to run on the inclined surface and the stairs of the present invention, the driving wheels and the auxiliary wheels on both the left and right sides may have a Chinese character arm shape so as to be closer to each other at the upper end portion and to be spaced apart from each other at the lower end portion. It may be provided to achieve.

Also preferably, in the wheelchair which is easy to run the slope and the stairs of the present invention, the curved moving bars on both the left and right sides may be provided to form a Chinese character arm (八) shape so as to be closer to each other at the upper end portion and to be spaced apart from each other at the lower end portion. Can be.

Also preferably, the wheelchair of the slope and the stairs of the present invention is easy to run, the lever provided to be perpendicular to the outer surface of the drive pulley; It may further include.

According to the present invention, even when driving the inclined slope, regardless of the angle of the inclined surface of the occupant to the occupant can achieve a horizontal state at all times to maintain a stable and comfortable state of the occupant body, The effect of providing stability and comfort, preventing the occurrence of a safety accident that overturns or falls down the occupant, and can provide a great convenience in use can be achieved.

In addition, according to the present invention, it is also possible to easily move up and down stairs or inclined surfaces, which was almost impossible in the past, and thus an effect that can provide a great convenience in use can also be achieved.

In addition, according to the present invention, since the force that the occupant needs to apply for driving may be reduced and the operation of applying the force may be easy, the effect of running for a longer time by reducing the physical consumption may also be achieved.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view showing a wheelchair easy to run inclined surface and stairs according to a preferred embodiment of the present invention, Figure 3 is a side cross-sectional view thereof.

Wheelchair 100 according to the present invention forms a support structure by the combination of the vertical and horizontal frames (110a, 110b), the handle portion 112 is formed on the upper side of the vertical frame (110a) and the occupant on the upper side The main body frame 110 in which the seat portion s is formed is formed and coupled to the left and right sides of the main body frame 110 in a long position along the driving direction. An outer tube 120 having a through hole in the outer tube 120 and an arc-shaped rod having the same curvature as the outer tube 120 is freely slidably moved forward and backward in the state inserted into the outer tube 120 and exposed to the outside. Curved moving bar 130 is provided to be coupled to the front and rear ends of the driving wheel 140 to be freely rotatable, the body frame 110 or the outer tube 120 is coupled to be freely rotatable sphere rotated by the occupant A pulley 182, an intermediate pulley 184 coupled to be freely rotatable with respect to any one end of the front and rear ends exposed to the outer tube 120, and an intermediate pulley among front and rear ends of the curved moving bar 130 ( A driven pulley 186 provided to be integrated with the driving wheel 140 provided at the opposite end on which the 184 is mounted and receiving rotational driving force, the driving pulley 182, the intermediate pulley 184, and the driven pulley 186. It includes an endless belt 189 for connecting.

In addition, the auxiliary wheel that is coupled to the rotation axis of each drive wheel 140 to be freely rotatable at both front and rear ends of the mounting bar 152, which is coupled to the center portion freely rotatable in the vertical direction (long) 150) may be further included.

Then, the brake means 160 for selectively braking the front and rear movement of the curved movement bar 130 with respect to the outer tube 120, and the brake operation unit 170 that controls the braking action of the brake means 160 and is operated by the operator ) May be further included.

Furthermore, the winding angle of the endless belt 189 with respect to the drive pulley 182 is made large by pressing and winding the endless belt 189 which returns to the drive pulley 182 side after passing through the driven pulley 186 on the way. It may further include a wrap angle (wrap angle) making pulley 188 to make.

The body frame 110 forms an overall support structure through the combination of the vertical frame 110a and the horizontal frame 110b.

The vertical frame (110a) is provided in the vertical direction, the upper end side is formed with a handle portion 112 which is used to grip and push the protector.

The horizontal frame 110b is provided in the horizontal direction, and is formed of ones that are positioned along the front and rear direction and ones that extend along the left and right direction.

Through the support structure of the main body frame 110, the upper portion is formed with a seat (s) for the occupant, the seat (s) is a vertical seat to support the back of the occupant and the horizontal seat plate on which the occupant is seated It consists of a climbing part.

The outer tube 120 is provided to be coupled to the left and right both sides of the main body frame 110 in a long position along the front and rear directions.

The outer tube 120 is formed in a gentle arc shape of a certain angle range, that is, a rainbow shape, a tube shape in which a through hole is formed therein.

The curved moving bar 130 has an arc shape having a curvature that is equal to or less than the outer tube 120, and has a longer length than the outer tube 120 to have a larger angular range than the outer tube 120.

The curved moving bar 130 is basically coupled to the middle portion thereof so as to be inserted into the outer tube 120, and when acting, the curved moving bar 130 is slid freely in the front and rear direction along the arc of the outer tube 120.

A plurality of rolling balls 122 to be arranged along the front and rear direction between the inner surface of the outer tube 120 and the outer surface of the curved moving bar 130 to reduce the friction during the sliding movement in the outer tube (120). It may be provided.

The rolling ball 122 may be embedded in the outer tube 120 to prevent the outflow through the adoption of the appropriate shape of the outer tube 120, and the like.

Both front and rear ends of the curved moving bar 130 are exposed and provided with driving wheels 140 coupled to each other, and the driving wheels 140 are rotated while being freely rotated as they travel in contact with the ground.

Referring to the operation in the case of traveling up and down inclined slopes and stairs, first, there is no difference in height between the front driving wheel 140 and the rear driving wheel 140 when driving on a flat surface, so that the outer pipe 120 ) Is positioned at the center of the curved moving bar 130.

On the other hand, as shown in Figure 4, when driving down the slope inclined front drive wheel 140 is located at a lower level than the rear drive wheel 140, according to the curved moving bar 130 is the outer tube Since the outer tube 120 is positioned to be biased toward the rear side of the curved moving bar 130, the seat plate portion of the seat portion s may be kept horizontal regardless of the angle of the inclined surface. Can be.

On the other hand, as shown in Figure 5, when driving the inclined inclined front side driving wheel 140 is located at a higher position than the rear driving wheel 140, according to the curved moving bar 130 is the outer tube Since the outer tube 120 is positioned to be biased toward the front side of the curved moving bar 130, the seat plate portion of the seating portion s can be kept horizontal regardless of the angle of the inclined surface. have.

That is, the degree of movement of the curved moving bar 130 relative to the outer tube 120 is automatically changed to correspond to the inclination angle of the inclined surface, so that the seat plate on which the occupant is boarded can always be in a horizontal state.

Therefore, even when driving on any slope, the center of the occupant's body may not be tilted back and forth at all, and the plane may remain horizontally as in driving. Therefore, the occupant or the guardian may obtain a sense of stability without any anxiety. The occurrence of an accident can also be prevented.

Further, the driving pulley 182 is provided on both outer sides of the main body frame 110, is coupled to the main frame 110 or the outer tube 120 so as to be freely and indirectly rotatable, the main body in the drawing An example of the coupling to the mounting bracket 110c coupled to the frame 110 is illustrated.

On the outer side of the drive pulley 182 is provided a lever 182a extending vertically outward, which lever 182a is used to rotate the drive pulley 182 by holding and circular motion of the occupant. .

Preferably, the lever 182a may be folded so that the occupant grips and rotates in the vertical state, and in the horizontal state, the lever 182a is in close contact with the outer surface of the driving pulley 182 to prevent interference with external objects.

The intermediate pulley 184 is coupled to be freely rotatable at any one end of the front and rear ends of the curved moving bar 130 exposed to the outer tube 120, and transmits a rotational force from the driving pulley 182. Receive.

Since the intermediate pulley 184 is fixed to the curved moving bar 130, its position is changed according to the movement of the curved moving bar 130 with respect to the outer tube 120.

The driven pulley 186 is provided to be integrated with respect to the driving wheel 140 provided at the opposite end on which the middle pulley 184 is mounted among front and rear ends of the curved moving bar 130 on which the middle pulley 184 is mounted. Receives rotational driving force from 184.

The endless belt 189 is an endless belt and consists of one belt.

The endless belt 189 connects the driving pulley 182, the intermediate pulley 184, and the driven pulley 186 from the outside to pass the driving force generated by the driving pulley 182 via the intermediate pulley 184 to the driven pulley 186. And then return to the driving pulley 182 to form a circular trajectory.

Here, preferably, the endless belt 189 is a timing belt having teeth or protrusions or holes or grooves repeated on the inner side thereof, and the three pulleys 182, 184, 186 are repeated on the outer circumferential surface thereof. Timing pulleys having holes or grooves (engaged with teeth or protrusions of the timing belt) or teeth or protrusions (engaged with holes or grooves of the timing belt), and in this combination, the occurrence of slip It is possible to prevent the loss of the rotational drive in the middle to prevent the transmission efficiency can be excellent.

However, the combination is not necessarily limited, and may be a combination of a flat belt and a flat pulley having an enhanced friction surface.

It is also possible to use chains instead of belts and sprockets instead of pulleys.

Furthermore, a winding angle increasing pulley 188 may be further provided to increase the winding angle of the endless belt 189 with respect to the driving pulley 182 with respect to the above-described electric connection structure.

The winding angle increasing pulley 188 is provided to be positioned between the driven pulley 186 and the driving pulley 182, and is coupled to be freely and directly rotatable with respect to the main frame 110 or the outer tube 120. In the drawings, the case is coupled to the mounting bracket 110c coupled to the body frame 110 by way of example.

The winding angle increasing pulley 188 is provided at a position spaced inward from an imaginary line connecting the driven pulley 186 and the driving pulley 182, and the endless belt 189 is wound by pressing the endless belt 189 to form a U shape at the position. Rotation causes the endless belt 189 to be wound in an angled range relative to the drive pulley 182.

The winding angle increasing pulley 188 reduces the amount of force that the occupant must apply when turning the driving pulley 182 to reduce the energy consumption of the occupant and increases the transmission efficiency from the driving pulley 182 to the endless belt 189. In addition, the slippage of the endless belt 189 may be reduced, the life of the driving pulley 182 may be extended, and noise generated by the movement of the endless belt 189 may be reduced.

Therefore, when the driving action by the electric connection configuration is described, first, when the protector pushes through the handle portion 112, the driving wheel 140 simply proceeds while rolling.

On the other hand, when the occupant is driving directly, the occupant turns the lever 182a provided on the driving pulleys 182 on both sides with both hands, and accordingly, the driving force is transmitted through the endless belt 189 so that the driving wheel 140 ) Is rotated.

Of course, the occupant may change the direction of the wheelchair 100 according to the present invention by stopping turning the lever 182a of any one of the levers 182a on both sides and turning only the lever 182a of the other side.

According to this driving action, instead of repeatedly rotating a large diameter hand rim by an angle as in the prior art, the occupant can rotate continuously to form a circle of small diameter, thereby rotating so as not to be interrupted in the middle. Drive force can be generated.

Therefore, the upward slope can generate a continuous rotational driving force when moving up the inclined surface or stairs, the wheelchair 100 according to the present invention can proceed without being pushed back at all.

In addition, since it can be rotated through a circular motion to form a circle of small diameter, it is very low in force and can travel for a long time.

In this regard, since the intermediate pulley 184 is coupled to one end of the curved movement bar 130 and the driven pulley 186 is coupled to the other end of the curved movement bar 130, the intermediate pulley 184 passes through the inclined surface or the stairs as described above. Even when the curved movement bar 130 is moved with respect to the outer tube 120, the length of the endless belt 189 may be kept constant without increasing or decreasing.

Furthermore, a pair of auxiliary wheels 150 are provided for each of the driving wheels 140 provided at four positions front, rear, left, and right.

The auxiliary wheel 150 has a relatively smaller diameter than the driving wheel 140 and may be a caster wheel.

The auxiliary wheel 150 is rotatably coupled to the front and rear ends of the mounting bar 152 which is provided in the front and rear direction so that the center portion thereof can freely rotate in the vertical direction with respect to the rotation axis of the driving wheel 140. do.

The auxiliary wheel 150 provides a function that allows the wheelchair 100 according to the present invention to move up and down the stairs smoothly.

Referring to the operation, as shown in FIG. 5, in the case of repeatedly moving up the stepped stairs, the front auxiliary wheel 150 touches the vertical wall of the stairs before the driving wheel 140 and then moves upward. By moving up or down, the drive wheel 140 by the support according to the change in the position to easily climb the stepped height of the stairs to be smoothly moved up.

That is, when the front side auxiliary wheel 150 is moved upwards after touching the vertical wall of the stairs, the rear side auxiliary wheels 150 are moved downwards to support the horizontal wall of the stairs, so that the driving wheels 140 are easily supported. It can be easily lifted up and down the stairs.

On the other hand, when the front side auxiliary wheel 150 is moved downwards after touching the vertical wall of the stairs, the driving wheel 140 is easily lifted by the rear side auxiliary wheels 150 as a result of touching the horizontal wall of the stairs. It can be raised to easily climb the stepped height of the stairs.

The brake means 160 blocks or unblocks the forward and backward movement of the curved movement bar 130 with respect to the outer tube 120. The detailed configuration of the brake means 160 selectively moves the curved movement as the user operates the brake operation unit 170. The brake pad 160a may be in close contact with or spaced from the bar 130, and the brake cable 160b may connect the brake pad 160a and the brake manipulation unit 170.

The brake operation unit 170 is operated by the guardian and the occupant, and turns on / off the braking action of the brake means 160 as operated.

The brake operation unit 170 is coupled to the vicinity of the upper handle portion 112 of the vertical frame 110a so that the guardian can easily operate by hand, and the driving pulley 182 to allow the passenger to easily operate by hand. It may be made of (not shown) coupled to the surrounding.

When the braking action is described in detail, when the protector or the passenger pulls the brake operation unit 170, the brake cable 160b is pulled so that the brake pad unit 160a is closely adhered to the curved movement bar 130 and the curved movement bar 130. ) Is impossible to move forward and backward, on the other hand, when the operator releases the brake operation unit 170, the pulled brake cable 160b is returned to its original position, and the brake pad unit 160a is spaced apart from the curved movement bar 130 to move the curved movement bar 130. ) Can be moved forward and backward.

According to this, the operator brakes as needed at the time of traveling on an inclined surface or stairs, thereby making the seat plate part more horizontally more precisely, and more conveniently operating operation.

In addition, the driving wheels 140 on both the left and right sides may be provided to form a Chinese character arm so as to be closer to each other at the upper end and spaced apart from each other at the lower end. Due to the large amount of impact generated during driving, the wheelchair 100 may be more completely blocked from being rolled over to the side.

Of course, even if the curved moving bar 130 and the outer tube 120 is provided to gradually open toward the lower end can achieve the same purpose.

As such, when the driving wheel 140 or the curved moving bar 130 or the like is provided in the form of a Chinese character arm, it can be prevented from interfering with the guardian's foot when driving.

In addition, according to the present invention, even when passing through the stepped stairs, even if there are protrusions, irregularities or other obstacles on the ground, it is possible to provide superiority that can proceed easily riding over the obstacles.

In addition, the wheelchair 100 according to the present invention may be equipped with various accessory elements that are known and commonly used. That is, the footrest, the arm rest, and the driving wheel braking device may be variously mounted.

In the foregoing description, it should be understood that those skilled in the art can make modifications and changes to the present invention without changing the gist of the present invention as merely illustrative of a preferred embodiment of the present invention.

1 is a perspective view showing a conventional conventional wheelchair,

Figure 2 is a perspective view showing a wheelchair easy to drive the inclined surface and stairs according to an embodiment of the present invention,

Figure 3 is a side cross-sectional view of a wheelchair easy to drive the inclined surface and stairs according to an embodiment of the present invention,

4 is an operation diagram for a case where the wheelchair which is easy to drive the inclined surface and the stairs according to the preferred embodiment of the present invention moves downwardly down the ground (step);

5 is an operation diagram for a case where the wheelchair which is easy to drive the inclined surface and the stairs according to the preferred embodiment of the present invention moves up the inclined stairs.

<Description of the symbols for the main parts of the drawings>

100: wheelchair 110: body frame

110a: vertical frame 110b: horizontal frame

110c: mounting bracket 112: handle

120: outer tube 122: cloud ball

130: curved moving bar 140: driving wheels

150: auxiliary wheel 152: mounting bar

160 brake means 160a brake pad portion

160b: brake cable 170: brake control panel

182: driving pulley 182a: lever

184: intermediate pulley 186: driven pulley

188: winding angle increase pulley 189: infinite belt

s: seat

Claims (9)

Body frame forming a support structure by the combination of the vertical and horizontal frames, the handle frame is formed on the upper side of the vertical frame, and the seat frame on which the occupant is seated on the upper side, and the body frame in a long position along the driving direction. It is coupled to each of the left and right sides of the outer tube which is formed in the shape of an arc of a certain angle range of the tube and the rod shape of the arc shape of a predetermined angle range is freely sliding in the front and rear direction in the state inserted into the outer tube. The curved moving bar is coupled to the driving wheel is freely rotatable at both front and rear ends exposed to the outside, and coupled to the body frame or the outer tube to be freely and directly rotatable, the drive is rotated by the occupant and electrically connected to the drive Drive to rotate the wheels In the wheelchair that is easy to run on the slope and stairs composed of pulleys, An intermediate pulley coupled to be freely rotatable with respect to any one end of the front and rear ends of the curved moving bar that is externally exposed to the outer tube; A driven pulley which is provided to be integrated with the driving wheel 140 provided at opposite ends on which the intermediate pulley is mounted among front and rear ends of the curved moving bar; And An endless belt electrically connecting the drive pulley, the intermediate pulley and the driven pulley; Wheelchair easy to drive on the slope and stairs further comprising a. delete delete The method of claim 1, A winding angle increasing pulley for increasing the winding angle of the endless belt relative to the driving pulley by pressing and winding the endless belt in the middle of the driven pulley and the driving pulley; Wheelchair easy to drive on the slope and stairs further comprising a. delete delete delete delete delete

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