KR20110121235A

KR20110121235A - Swing board

Info

Publication number: KR20110121235A
Application number: KR1020100040736A
Authority: KR
Inventors: 박성인
Original assignee: 박성인
Priority date: 2010-04-30
Filing date: 2010-04-30
Publication date: 2011-11-07

Abstract

PURPOSE: A swing board is provided to generate driving force by swinging a foothold and a connection rode in left and right with a handle shaft as a center, thereby improving driving force by rotating rotation frames with respect to a connection member fixed in the handle shaft. CONSTITUTION: A swing board(100) comprises a front wheel(110), a handle shaft(120), a handle(130), a hollow shaft(140), a first fixing block, a second fixing block, a connection member(150), a rotation frame(160), a foothold frame(170), a foothold, and a back wheel. The handle shaft is connected to the front wheel. The upper end part of the handle shaft is slanted to the rear side of a front wheel progress direction. The handle is fixed in the upper end part of the handle shaft and controls the direction of the front wheel. The hollow shaft covers the handle shaft and rotates with the handle shaft as a center. The first fixing block and second fixing block are respectively fixed in the rear end part of the hollow shaft and separated in up and down with a predetermined distance. The connection member is fixed in the first fixing block and expanded in left and right directions. The rotation frame is swung left and right according to the rotation of the hollow shaft. The foothold frame is swung left and right together with the rotation frame.

Description

Swing board {Swing board}

The present invention relates to a swing board, and more particularly to a swing board swinging the scaffold to obtain a driving force.

In general, two wheels are attached to the lower part of the footrest back and forth around the footrest, and one foot is placed on the upper surface of the footrest and the other foot rolls the ground to generate the driving force of the skate footing. In the case of the scaffolding, the propulsion force is obtained by the foot cloud, and thus a limit may occur in the running speed of the scaffolding.

In addition, the three-wheeled footrest to complement the skate footing can be stably centered because three wheels are attached to the bottom of the footrest.

However, the three-wheeled footboard also has a propulsion force by the foot cloud of one foot like the general skate footing, and thus it is difficult to overcome the limitations of the driving performance.

The present invention can be stably centered, provides a swing board that can obtain a driving force by using a reaction of the body.

The swing board according to the present invention is connected to the front wheel, the front wheel, the handle shaft is inclined to the rear in the rear direction of the front wheel, the handle is fixed to the upper end of the handle shaft, the handle for adjusting the direction of the front wheel, It is provided to surround the handle shaft, and the hollow shaft to rotate around the handle shaft, respectively fixed to the rear end of the hollow shaft, the first and second fixing blocks spaced up and down by a predetermined interval, and the first fixing block A fixed member, a connecting member extending in the left and right directions, a front end portion is fixed to both ends of the second fixing block, respectively, and a stop portion is coupled to both ends of the connecting member so as to be rotatable, and a rear end extends rearward, A pair of rotating frames swinging from side to side according to the rotation of the hollow shaft and connected to rear ends of the rotating frames, respectively, A pair of scaffolding frames swinging from side to side and the rear ends of the scaffolding frames, respectively, are provided on a pair of scaffolds swinging from side to side according to the swinging motion of the scaffolding frames, and bottom surfaces of the scaffolding, It may include a pair of rotatable rear wheels.

According to one embodiment of the present invention, the scaffold is connected to the scaffold frame, respectively, the support plate is fixed to the rear wheel on the lower surface, and fastened vertically on the support member, a fixed shaft combining a pair of bearings And a pair of first bolts disposed between the bearings and coupled to the fixed shaft, the rotating plate rotatable about the fixed shaft, a cover fixed on the rotating plate, and an upper surface of the support plate; It may be connected to a pair of second bolts provided on the lower surface of the rotating plate, respectively, and may include elastic members for restoring the rotating plate to its original position.

According to one embodiment of the present invention, the elastic members include a torsion spring to limit the rotational angle of the rotating plate by engaging the second bolts when the rotating plate is rotated, the second bolt The lower end of the field may be lower than the upper end of the first bolts and the second bolts may be located between the first bolts.

According to one embodiment of the present invention, an elastic member may be disposed between the stop of the pivot frames and both ends of the connection member to increase the rotation range of the stop of the pivot frames relative to both ends of the connection member. .

According to one embodiment of the invention, the scaffold frame may be inclined such that the front end portion is higher than the rear end portion.

According to one embodiment of the present invention, the rear wheels may be variable wheels in which a distance from the footrests varies according to a load applied thereto.

The swing board according to the present invention is connected to the front wheel, the front wheel, the handle shaft is inclined to the rear in the rear direction of the front wheel, the handle is fixed to the upper end of the handle shaft, the handle for adjusting the direction of the front wheel, It is provided to be rotatable about the handle shaft, the rear end is branched to the rear and extends, the connecting frame swinging left and right according to the rotation of the hollow shaft, respectively connected to the rear end of the branch frame, the branch frame A pair of scaffold frames swinging from side to side, a support plate connected to the scaffold frame, a fixed shaft vertically fastened on the support member, and coupled with a pair of bearings, disposed between and fixed to the bearings A rotating plate coupled to the shaft and rotatable about the fixed shaft, the cover and the supporting plate fixed on the rotating plate A pair of first bolts provided on the bottom surface and a pair of second bolts provided on the lower surface of the rotating plate, respectively, and an elastic member for restoring the rotating plate to its original position. A pair of scaffolds swinging from side to side in accordance with the swing motion and the bottom of the scaffolds may be provided, respectively, and may include a pair of rotatable rear wheels.

Swing board according to the present invention generates a driving force by swinging the connecting rod and the footrest to the left and right about the handle shaft. In addition, since the upper end of the handle shaft is inclined to the rear of the swinging direction of the swing board, and the front end of the connecting rod connected to the handle shaft is lower than the rear end, the connecting rod can easily swing left and right about the handle shaft. .

In addition, the swing board may rotate the rotation frame with respect to the connecting member fixed to the handle shaft. Therefore, the rear wheels connected to the rotation frames are kept in contact with the ground without being separated from the ground even when the handle shaft is tilted to change the direction. Therefore, the driving force of the swing board can be improved.

In addition, the swing board can be rotated around the fixed shaft fixed to the cover and the rotating plate of the foot plate, it is possible to improve the driving force of the swing board.

1 is a schematic perspective view for explaining a swing board according to an embodiment of the present invention.
FIG. 2 is a schematic side view for explaining the swing board shown in FIG. 1.
3 is an enlarged view illustrating an enlarged portion of the connection portion of the handle shaft illustrated in FIG. 1.
4 to 6 are cross-sectional views for explaining the rotation of the rotation frames with respect to the connecting member shown in FIG.
7 is a schematic perspective view for explaining a swing board in another embodiment of the present invention.
8 is an exploded perspective view for explaining the footrest and the rear wheel shown in FIG. 7.
9 is a plan view for explaining the rotation of the rotating plate shown in FIG.
10 is a schematic perspective view for explaining a swing board in another embodiment of the present invention.

Hereinafter, a swing board according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are shown in an enlarged scale than actual for clarity of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

1 is a schematic perspective view for explaining a swing board according to an embodiment of the present invention, Figure 2 is a schematic side view for explaining the swing board shown in Figure 1, Figure 3 is a handle shown in Figure 1 It is an enlarged view which enlarged the connection part of an axis.

1 and 2, the swing board 100 includes a front wheel 110, a handle shaft 120, a handle 130, a hollow shaft 140, and first and second fixing blocks 142 and 144. , A connection member 150, a pair of pivot frames 160, a pair of scaffold frames 170, a pair of scaffolds 180, and a pair of rear wheels 190.

The front wheel 110 is connected to the lower end of the handle shaft 120. At this time, the front wheel 110 is located behind the lower end of the handle shaft 120.

The top of the handle shaft 120 is inclined toward the rear of the front wheel 110 in the traveling direction. Therefore, even if the driver's load is concentrated on the handle shaft 120, the swing board 100 can be prevented from falling forward.

The inclination angle θ1 of the handle shaft 120 is about 10 degrees to 40 degrees based on a vertical line perpendicular to the ground. When the inclination angle θ1 of the handle shaft 120 is less than about 10 degrees, since the handle shaft 120 is almost vertical, the swing board 100 may be driven even if the driver's load is concentrated on the handle shaft 120. You can fall forward. When the inclination angle θ1 of the handle shaft 120 is greater than about 40 degrees, the inclination angle of the handle shaft 120 may be large so that manipulation of the handle 130 connected to the handle shaft 120 may be difficult. .

The handle 130 is fixed to the top of the handle shaft 120 to be perpendicular to the handle shaft 120. The direction of the front wheel 110 connected to the handle shaft 120 is adjusted by rotating the handle 130.

The hollow shaft 140 may be provided to surround the handle shaft 120 and may rotate about the handle shaft 120. Although not shown, a bearing may be disposed between the hollow shaft 140 and the handle shaft 120.

The first and second fixing blocks 142 and 144 are fixed to the rear ends of the hollow shaft 140, respectively, and are spaced vertically. That is, the first fixing block 142 is located above, and the second fixing block 144 is located below.

The connection member 150 is fixed to an upper surface of the first fixing block 142 and extends in a left and right direction perpendicular to the traveling direction.

The pair of pivot frames 160 may have front ends fixed to both ends of the second fixing block 144, and stop portions may be rotatably coupled to both ends of the connecting member 150, and rear ends thereof may be rearward. Extend. For example, the pair of rotating frames 160 may have an approximately L shape.

Since the pair of pivot frames 160 are fixed to the second fixing block 144, the pair of pivot frames 160 may swing left and right according to the rotation of the hollow shaft 140.

A pair of elastic members 165 may be disposed between the stops of the pair of pivot frames 160 and both ends of the connection member 150, respectively. Examples of the pair of elastic members 165 may include rubber or the like. Since the pair of elastic members 165 are compressed according to the pressure applied at both ends of the pair of rotating frames 160 and the connecting member 150, the pair of rotating frames 160 may be compressed. The stop portion may rotate in a larger range with respect to both ends of the connecting member 150.

4 to 6 are cross-sectional views for explaining the rotation of the rotation frames with respect to the connecting member shown in FIG.

1 to 6, when the handle shaft 120 and the hollow shaft 140 are inclined left and right, the connecting member fixed to the hollow shaft 142 through the first fixing block 142. 150 is inclined. In this case, the pivot frames 160 rotate with respect to the connection member 150. In particular, the rotation frames 160 may mainly rotate up and down with respect to the connection member 150 with respect to the front end portion fixed to the second fixing block 144. Even if the connecting member 150 is inclined from side to side, since the pivot frames 160 rotate up and down, the rear wheels 190 connected to the pivot frames 160 are in contact with the ground without being spaced apart from the ground. I can keep it. Therefore, the driving force of the swing board 100 may be improved by shaking the handle shaft 120 of the swing board 100 from side to side.

Referring again to FIGS. 1 to 3, the pair of scaffold frames 170 are connected to rear ends of the pair of pivot frames 160, respectively. For example, the pair of scaffold frames 170 are hinged with the pair of pivot frames 160.

The pair of locking pins 175 fixes the pair of scaffold frames 170 horizontally or vertically with respect to the pair of pivot frames 160, respectively. For example, the pair of locking pins 175 may have a substantially U shape and penetrate through the pair of scaffold frames 170 and the pair of pivot frames 160. After the pair of locking pins 175 are pushed to release the pair of scaffold frames 170 and the pair of pivot frames 160, the pair of pivot frames 160 is centered. By rotating the pair of scaffold frames 170, the pair of scaffold frames 170 and the pair of pivot frames 160 may form a straight line or a vertical line. Thereafter, the pair of locking pins 175 may be repositioned to fix the pair of scaffold frames 170 and the pair of rotation frames 160 again.

When the pair of scaffolding frames 170 and the pair of pivot frames 160 are perpendicular to each other, the swing board 100 can be minimized, so that the swing board 100 can be easily transported. .

When the pair of scaffolding frames 170 form a straight line, the pair of scaffolding frames 170 may be lateral to the left and right sides like the pair of pivoting frames 160. I can swing.

The pair of pivot frames 160 and the pair of scaffold frames 170 may be inclined such that the front end portion is higher than the rear end portion. Therefore, the pair of rotating frames 160 can easily swing left and right with respect to the handle shaft 120. In particular, since the handle shaft 120 is inclined backward, the swing movement of the pair of rotation frames 160 can be made more easily.

An inclination angle θ2 of the pair of pivot frames 160 and the pair of scaffold frames 170 may be about 10 degrees to about 30 degrees with respect to the ground. When the inclination angle θ2 of the pair of pivot frames 160 and the pair of scaffold frames 170 is less than about 10 degrees, the pair of pivot frames 160 and the pair of scaffold frames ( Since the 170 are disposed substantially horizontally with the ground, the pair of pivot frames 160 and the pair of scaffold frames 170 are difficult to swing relative to the handle shaft 120. When the inclination angle θ2 of the pair of pivot frames 160 and the pair of scaffold frames 170 exceeds about 30 degrees, the pair of pivot frames 160 and the pair of scaffolds The swing movement of the frames 170 is easier, but it is difficult to lengthen the length of the pair of pivot frames 160 and the pair of scaffold frames 170 sufficiently. That is, the distance between the handle shaft 120 and the pair of scaffold 180 may be too narrow.

The pair of scaffolds 180 has a substantially flat plate shape and is fixed to rear ends of the pair of scaffold frames 170, respectively. The pair of footrests 180 are arranged to be parallel to the ground. According to the swing operation of the pair of scaffold frames 170, the pair of scaffolds 180 fixed to the pair of scaffold frames 170 also swing left and right. The swing board 100 is advanced with a driving force generated by swinging the pair of footrests 180 from side to side with respect to the handle shaft 120.

As another example, the pair of footrests 180 may be inclined such that the rear end thereof is higher than the front end. Thus, the load of the driver is concentrated on the handle 130 rather than the pair of footrests 180. Since the center of gravity of the swing board 100 is concentrated on the front wheel 110 when the driver boards, a greater propulsion force can be obtained from the front wheel 110.

As another example, the pair of scaffolds 180 may be hinged to the rear end of the pair of scaffold frames 170. Therefore, the pair of footrests 180 may swing left and right about the rear end of the pair of footrest frames 170. The pair of scaffold frames 170 swing left and right about the handle shaft 120, and the pair of scaffolds 180 swing left and right about the rear ends of the pair of scaffold frames 170. Therefore, the swing angle of the pair of footrests 180 with respect to the handle shaft 120 can be increased. When the swing angles of the pair of scaffolds 180 are increased, the driving force of the swing board 100 may be improved.

The pair of rear wheels 190 are rotatably connected to the bottom of the pair of footrests 180, respectively. Since the pair of rear wheels 190 are rotatable, the pair of scaffolds 180 may swing as easily around the handle shaft 120 as the pair of scaffold frames 170. .

On the other hand, the pair of rear wheels 190 may be a variable wheel that the distance to the pair of the footrest 180 is different depending on the load. That is, when the load applied to the rear wheel 160 is increased, the pair of the footrests 180 are lowered so that the distance between the pair of the rear wheels 190 and the pair of the footrests 180 becomes closer, When the load applied to the pair of rear wheels 190 decreases, the pair of footrests 180 are raised to distance between the pair of rear wheels 190 and the pair of footrests 180. Away Accordingly, the pair of footrests 180 may be easily swinged to the left and right about the handle shaft 120 while alternately applying loads to the pair of rear wheels 190.

The swing board 100 may rotate the rotation frame 160 with respect to the connection member 150 is fixed to the handle shaft (120). Therefore, even when the handle shaft 120 is tilted to change direction, the rear wheels 190 connected to the pivot frames 160 are kept in contact with the ground without being spaced apart from the ground. Therefore, the driving force of the swing board 100 can be improved.

7 is a schematic perspective view for explaining a swing board in another embodiment of the present invention, Figure 8 is an exploded perspective view for explaining the footrest and the rear wheel shown in FIG.

7 and 8, the swing board 200 includes a front wheel 210, a handle shaft 220, a handle 230, a hollow shaft 240, and first and second fixing blocks 242 and 144. And a connection member 250, a pair of pivot frames 260, a pair of scaffold frames 270, a pair of scaffolds 280, and a pair of rear wheels 290.

The front wheel 210, the handle shaft 220, the handle 230, the hollow shaft 240, the first and second fixing blocks 242 and 144, and the connection member 250 except for the pair of the footrests 280. ), A pair of pivoting frames 260, a pair of scaffolding frames 270, and a pair of rear wheels 290 are described in detail with reference to FIGS. 1 to 6. 120, the handle 130, the hollow shaft 140, the first and second fixing blocks 142, 144, the connecting member 150, the pair of pivot frames 160, a pair of scaffolding frames ( 170 and the pair of rear wheels 190 are substantially the same as the descriptions thereof and will be omitted.

Each of the footrests 280 includes a support plate 281, a fixed shaft 282, a pair of bearings 283, a rotating plate 284, a pair of elastic members 285, and a cover 286. .

The support plate 281 has a flat plate shape and is connected to the rear end of the scaffold frame 270. The rear wheel 290 is fixed to the lower surface of the support plate 281 by a bolt.

The support plate 281 has a nut 281a and a pair of first bolts 281b. The nut 281a is fixed to the center of the upper surface of the support plate 281. The pair of first bolts 281b are fixed to the rear end portion of the upper surface of the support plate 281 to be spaced from side to side.

The fixed shaft 282 is fastened to the nut 281a of the support plate 281. That is, the fixed shaft 282 is fastened vertically on the support plate 281. In this case, the pair of bearings 283 are fitted to the fixed shaft 282.

The rotating plate 284 has a curved central plate shape and a through hole 284a in the curved central portion. The rotating plate 284 is fitted to the fixed shaft 282 through the through tor 284a and is disposed between the bearings 283. That is, the bearings 283 support the upper and lower surfaces of the rotating plate 284. Accordingly, the rotating plate 284 may rotate about the fixed shaft 282.

In addition, the rotating plate 284 has a pair of second bolts 284b fixed to the lower surface. The second bolts 284b are spaced to the left and right and disposed between the first bolds 281b. In this case, a lower end of the second bolts 284b is lower than an upper end of the first bolts 281b.

One end of the pair of elastic members 285 is connected to the first bolts 281b, and the other end opposite to the one end is connected to the second bolts 284b. End portions of the elastic members 285 may rotate about the first bolts 281b and the second bolts 284b. An example of the elastic members 285 may be a torsion spring.

9 is a plan view for explaining the rotation of the rotating plate shown in FIG.

Referring to FIG. 9, as the rotary plate 284 is rotated in a clockwise or counterclockwise direction about the fixed shaft 282, the positions of the second bolts 284b are changed, so that the elastic members 285 are rotated. One contracts and the other stretches. At this time, the contracting elastic member 285 is caught by a second bolt 284b which fixes the extending elastic member 285. Thus, the rotation angle of the rotating plate 284 is limited.

In addition, the contracting elastic member 285 may be restored to its original position before the rotating plate 284 rotates according to the restoring force of the stretching elastic member 285.

Referring again to FIGS. 7 and 8, the cover 285 is disposed on the rotating plate 284 and fixed to the rotating plate 284 using screws. The cover 285 may support the driver's foot, and the cover 285 may rotate together with the rotating plate 284. The swing angle of the pair of footrests 280 with respect to the handle shaft 220 may be increased by the rotation of the cover 285 and the rotating plate 284. When the swing angle of the pair of footrests 280 is increased, the driving force of the swing board 200 may be improved.

On the other hand, the pair of scaffold 280 may be inclined so that the rear end is higher than the front end. Thus, the driver's load is concentrated on the handle 230 rather than the pair of scaffolds 280. Since the center of gravity of the swing board 200 is concentrated on the front wheel 210 when the driver boards, a greater propulsion force can be obtained from the front wheel 210.

As another example, the support plates 281 of the scaffolds 280 may be hinged to the rear ends of the pair of scaffold frames 270. Since the pair of scaffolds 280 may swing left and right about the rear ends of the pair of scaffold frames 270, the swing angles of the pair of scaffolds 280 with respect to the handle shaft 220 may be adjusted. I can make it big. When the swing angle of the pair of footrests 280 is increased, the driving force of the swing board 200 may be improved.

The swing board 200 may rotate the rotation frame 260 with respect to the connection member 250 is fixed to the handle shaft 220. Therefore, even when the handle shaft 220 is tilted to change direction, the rear wheels 290 connected to the pivot frames 260 are kept in contact with the ground without being spaced apart from the ground. Therefore, the driving force of the swing board 200 can be improved.

In addition, the swing board 200 may rotate around the fixed shaft 282 fixed to the support plate 281 and the cover 286 and the rotating plate 284 of the scaffold 280, the swing board 200 Can improve the driving force.

10 is a schematic perspective view for explaining a swing board in another embodiment of the present invention.

Referring to FIG. 10, the swing board 300 includes a front wheel 310, a handle shaft 320, a handle 330, a connection frame 340, a pair of foot plates 350, and a pair of rear wheels 360. Include them.

A detailed description of the front wheel 310, the handle shaft 320, the handle 330, a pair of footrests 350 and a pair of rear wheels 360 except for the connection frame 340 is 7 to FIG. Since the front wheel 210, the handle shaft 220, the handle 230, a pair of the footrest 280 and a pair of rear wheels 290 with reference to 9 are substantially the same as the description of the description.

The connection frame 340 is rotatably connected to the handle shaft 330, the rear end is branched in both directions. The connecting frame 340 may be inclined such that the front end portion is higher than the rear end portion. Therefore, the connection frame 340 can easily swing left and right based on the handle shaft 320. In particular, since the handle shaft 320 is inclined backward, the connecting frame 340 may be more easily swinging.

The pair of footrests 350 are connected to rear ends of the connection frames 340 branched in both directions.

Since the connection frame 340 swings left and right about the handle shaft 320, and the scaffold 350 swings left and right about the connection frame 340, the connection to the handle shaft 320 is performed. Swing angles of the footrests 350 may be increased. When the swing angles of the scaffold 350 are increased, the driving force of the swing board 330 may be improved.

The swing board 300 is the connection frame 340 swings to the left and right about the handle shaft 320, and the cover and the rotating plate of the foot plate 350 can rotate around a fixed shaft fixed to the support plate In addition, the driving force of the swing board 300 may be improved.

In the swing board according to the present invention, since the rotating frames can be rotated with respect to the connecting member fixed to the handle shaft, the rear wheels connected to the rotating frames are in contact with the ground without being separated from the ground even when the handle shaft is tilted to change direction. Keep it. In addition, the swing board may rotate about a fixed shaft fixed to the support plate and the cover and the rotating plate of the foot plate. Therefore, the driving force of the swing board can be improved.

While the foregoing has been described with reference to preferred embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

100: swing board 110: front wheel
120: handle shaft 130: handle
140: hollow shaft 150: connecting member
160: rotating frame 165: elastic member
170: scaffolding frame 180: scaffolding
181: support plate 182: fixed shaft
183: bearing 184: rotating plate
185: elastic member 186: cover
190: rear wheel

Claims

Front wheel;
A handle shaft connected to the front wheel and having an upper end inclined to the rear of the traveling direction of the front wheel;
A handle fixed to an upper end of the handle shaft to adjust a direction of the front wheel;
A hollow shaft provided to surround the handle shaft and rotating about the handle shaft;
First and second fixing blocks fixed to rear ends of the hollow shafts and spaced apart from each other by a predetermined interval;
A connection member fixed to the first fixing block and extending in the left and right directions;
A pair of front ends are fixed to both ends of the second fixing block, respectively, so that the stop parts are rotatably coupled to both ends of the connecting member, the rear ends extend rearward, and swing left and right according to the rotation of the hollow shaft. Rotating frames;
A pair of scaffold frames respectively connected to rear ends of the pivot frames and swinging from side to side like the pivot frames;
A pair of scaffolds respectively connected to rear ends of the scaffold frames and swinging from side to side according to a swing operation of the scaffold frames; And
Swing boards are provided on the bottom of the footrest, respectively, and comprises a pair of rotatable rear wheels.

The method of claim 1, wherein the scaffolding, respectively
A support plate connected to the scaffold frame and having a rear wheel fixed thereto;
A fixed shaft which is vertically fastened on the support member and combines a pair of bearings;
A rotating plate disposed between the bearings and coupled to the fixed shaft and rotatable about the fixed shaft;
A cover fixed on the rotating plate; And
A pair of first bolts provided on the upper surface of the support plate and a pair of second bolts provided on the lower surface of the rotating plate, and including elastic members for restoring the rotating plate to its original position. A swing board characterized by the above.

3. The method of claim 2, wherein the elastic member includes a torsion spring to limit the rotation angle of the rotating plate by engaging the second bolt in the rotation of the rotating plate, the lower end of the second bolt Swing board, characterized in that lower than the top of the first bolts and the second bolts are located between the first bolts.

The swing board of claim 1, wherein an elastic member is disposed between the stop of the pivot frames and both ends of the connection member to increase the rotation range of the stop of the pivot frames relative to both ends of the connection member. .

The swing board of claim 1, wherein the scaffold frames are inclined such that the front end portion is higher than the rear end portion.

The swing board of claim 1, wherein the rear wheels are variable wheels whose distance from the footrests varies according to a load applied thereto.

Front wheel;
A handle shaft connected to the front wheel and having an upper end inclined to the rear of the traveling direction of the front wheel;
A handle fixed to an upper end of the handle shaft to adjust a direction of the front wheel;
A connection frame provided to be rotatable about the handle shaft, the rear end extending in a rearward direction and swinging from side to side according to the rotation of the hollow shaft;
A pair of scaffold frames connected to rear ends of the branch frames and swinging from side to side like the branch frames;
A support plate connected to the scaffold frame, a fixed shaft vertically fastened on the support member, and coupled to a pair of bearings, a rotating plate disposed between the bearings, coupled to the fixed shaft, and rotatable about the fixed shaft; A pair of first bolts provided on a cover fixed to the rotating plate and an upper surface of the support plate and a pair of second bolts provided on a lower surface of the rotating plate, respectively, and restoring the rotating plate to its original position. A pair of scaffolds each including an elastic member for swinging left and right according to the swing motion of the scaffold frames; And
Swing boards are provided on the bottom of the footrest, respectively, and comprises a pair of rotatable rear wheels.