KR100609653B1 - Board apparatus - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board device, and more particularly, to a board device that allows a board to move automatically by mounting a gear and supplying power to the gear using a press plate or a motor.

Board, power generation unit, pressure plate, wire,

Description

Board Device {BOARD APPARATUS}

1 is a side view of a board device according to a first embodiment of the present invention;

2 is a plan view of a board apparatus according to a first embodiment of the present invention;

3 is a front view of a board apparatus according to a first embodiment of the present invention;

4 is a bottom view of the pressing plate of the board apparatus according to the first embodiment of the present invention;

5 is a side view of a board device according to a third embodiment of the present invention;

6 is a plan view of a board apparatus according to a third embodiment of the present invention;

7 is a rear view of a board device according to a third embodiment of the present invention;

8 is a bottom view of the pressing plate of the board apparatus according to the third embodiment of the present invention.

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

110, 310: board panel, 110a: front board panel,

110b: rear board panel, 112, 312: through hole,

120, 320: wheels, 121, 321: rollers,

122, 322: rotation axis, 130, 330: power generating unit,

131, 331: pressing plate, 331a: left pressing plate,

331b: right side pressing plate, 132, 332: wire,

133, 333: tension spring, 134, 334: one-way clutch,

135, 335: first pulley, 136, 336: second pulley,

137, 337: 3rd pulley, 139, 339: hinge spring,

140, 340: first gear, 141, 341: rotation axis,

150, 350: second gear, 160, 360: support pulley,

170, 370: stopper wire, 380: handle,

381: direction wheel, 390: brake,

391: handle,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board device, and more particularly, to a board device that allows a board to move automatically by mounting a gear and supplying power to the gear using a press plate or a motor.

A conventional roller board is composed of a board panel formed by hinge coupling of one or two and two wheel sets provided with two rollers on the bottom of the board panel.

In addition, a conventional kickboard is equipped with wheels on a long board panel and a bottom of the board panel, and a handle is mounted on the front.

These conventional roller boards and kickboards are designed to be driven by the driver kicking the ground with one foot during flat driving.

Therefore, when driving for a long time requires a lot of physical strength, especially on the uphill there was a problem that takes more force.

The present invention has been made in order to solve the above-described problems, by mounting a gear on the board panel, by mounting a power generating unit capable of driving the gear, the board that can be driven by the board without the driver occupying the ground The purpose is to provide a device.

In order to achieve the above object, the board device of the present invention includes a board panel; A wheel rotatably mounted on a lower portion of the board panel; A first gear mounted to a bottom surface of the board panel; A second gear mounted to the rotating shaft of the wheel and engaged with the first gear; It includes a power generating unit for rotating the first gear.

The power generating unit, the pressing plate coupled to one side hinged to the upper portion of the board panel; A tension spring mounted to the board panel; A wire having one end connected to the pressing plate and the other end connected to the tension spring, and wound around the first gear; It includes a one-way clutch mounted to the first gear or the second gear.

It is preferable that the bottom surface of the pressing plate and the top surface of the board panel are connected by a stopper wire.

A support pulley protrudes and is mounted on an upper portion of the board panel, and one end of the wire is wound around the support pulley and connected to a bottom surface of the pressing plate.

In addition, a hinge spring is mounted on one side of the pressing plate and a hinge coupling portion of the board panel.

In addition, the board device of the present invention, the front panel panel and the rear board panel hinge board is formed; A wheel rotatably mounted on a lower portion of the board panel; A first gear mounted to a bottom surface of the board panel; A second gear mounted to the rotating shaft of the wheel and engaged with the first gear; It comprises a power generating unit for rotating the first gear, wherein the power generating portion, the pressing plate coupled to one side hinged to the upper portion of the board panel; A tension spring mounted to the board panel; A wire having one end connected to the pressing plate and the other end connected to the tension spring, and wound around the first gear; It includes a one-way clutch mounted to the first gear or the second gear, the support panel is protruded to be mounted on the upper portion of the board panel, one end of the wire is connected to the bottom surface of the pressing plate The wire may be wound around the first gear mounted on the front board panel and the first gear mounted on the rear board panel in different directions.

Or, the front of the board panel is equipped with a steering wheel mounted wheel, the pressing plate is made of a left pressing plate and a right pressing plate, the board panel, the first gear corresponding to the left pressing plate and the right pressing plate, respectively, The second gear, the power generating portion and the support pulley are respectively mounted.

The power generator may include a motor mounted to the board panel; A power supply unit supplying power to the motor; A switch for operating the motor; And a connecting member which connects the motor and the first gear to transfer the rotational force of the motor to the first gear.

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

First embodiment

1 is a side view of a board apparatus according to a first embodiment of the present invention, FIG. 2 is a plan view of a board apparatus according to a first embodiment of the present invention, and FIG. 3 is a board apparatus according to a first embodiment of the present invention. 4 is a bottom view of the pressing plate of the board apparatus according to the first embodiment of the present invention.

As shown in Figures 1 to 4, the first embodiment of the present invention, the board panel 110, the wheel 120, the first gear 140, the second gear 150, the power It is made of a generator 130.

The board panel 110 may be formed of one long panel or may be formed by hinged two panels.

In the first embodiment, as shown in FIGS. 1 and 2, two panels, namely, the front board panel 110a and the rear board panel 110b are hinged to form the board panel 110.

The wheels 120 are rotatably mounted to the front board panel 110a and the rear board panel 110b, respectively, and the rollers 121 are disposed on the board panel 110 or on the left and right sides, respectively. It consists of a rotating shaft 122 connecting the roller 121.

As shown in FIG. 3, the first gear 140 is rotatably mounted on the bottom surface of the board panel 110. To this end, the rotation shaft 141 is fixed to the bottom surface of the board panel 110. The first gear 140 is mounted on the rotation shaft 141 in parallel to the board panel 110.

As shown in FIG. 3, the second gear 150 is mounted on the rotating shaft 122 of the wheel 120 and is engaged with the first gear 140.

In this case, the first gear 140 and the second gear 150 are meshed at right angles to each other, and the first gear 140 and the second gear 150 use a bevel gear or a helical gear forming a right angle. Do it.

The power generator 130 rotates by transmitting power to the first gear 140, the pressing plate 131, the tension spring 133, the wire 132, the one-way clutch 134 and , A support pulley 160 and a plurality of pulleys 135, 136 and 137.

One tension spring 133, one wire 132, one support pulley 160 and a plurality of pulleys 135, 136 and 137 are mounted on the front board panel 110a and the rear board panel 110b, respectively. 1 to 4, two tension springs 133, two wires 132, two support pulleys 160 and a plurality of pulleys may be mounted. do.

As shown in FIG. 1, the pressing plate 131 is hinged rotatably at one side to an upper portion of the board panel 110, and a stepped portion 135a is formed at both left and right sides as shown in FIG. 4. The first pulley 135 is mounted to the stepped portion 135a toward the hinge coupling portion with the board panel 110.

The support pulley 160 protrudes upward from the upper portion of the board panel 110 and is mounted on both sides of the board panel 110 to correspond to the first pulley 135.

In addition, it is preferable that the bottom surface of the pressing plate 131 and the top surface of the board panel 110 are connected by the stopper wire 170.

In addition, the hinge spring 139 is mounted on one side of the pressing plate 131 and the hinge coupling part of the board panel 110 as shown in FIGS. 3 and 4.

A through hole 112 is formed in the board panel 110 adjacent to the support pulley 160, and a second pulley 136 is disposed in the bottom surface of the board panel 110 adjacent to the through hole 112. The tension spring 133 is mounted on the bottom surface of the board panel 110.

One end of the wire 132 is connected to the pressing plate 131, and the other end of the wire 132 passes through the first pulley 135, the support pulley 160, the through hole 112, and the second pulley 136. The gear 140 is wound and connected to the tension spring 133.

At this time, the wire 132 is wound around the rotation shaft 141 of the first gear 140 in detail, the first gear 140, the rotation shaft 141 to increase the friction force with the wire 132 Allow gratings or multiple grooves to be formed.

In addition, the tension spring 133 is preferably to be connected to the wire 132 in a relaxed state in order to tension the wire 132.

When the wire 132 is made of two, as shown in Figure 2, the wire 132 is to wind the first gear 140 in the same direction.

One end of the wire 132 may be connected to the upper portion of the pressing plate 131, but is preferably connected to the bottom surface of the pressing plate 131.

1 and 2, the third pulley 137 is mounted on the opposite side of the tension spring 133, so that the other end of the wire 132 is wound around the first gear 140. It may be connected to the tension spring 133 via a third pulley 137.

In this case, when the wire 132 is two, one of the two wire 132 is wound around the first gear 140 in the counterclockwise direction and connected to the tension spring 133 via a third pulley 137. The remaining wire 132 is wound around the first gear 140 in a counterclockwise direction and connected to the tension spring 133 via a third pulley 137.

The third pulley 137 is preferably mounted so that the two rollers on one rotation shaft up and down, so that each of the two wires 132 is wound around each roller in the third pulley 137.

In addition, the first gear 140 or the second gear 150 is equipped with a one-way clutch 134 (one-way clutch), the one-way clutch 134 is also called an overrunning clutch, which is one direction It is a clutch that transmits rotational force only and rotates in the reverse direction.

The first embodiment having the above structure is operated as follows.

As shown in FIG. 1, when the driver climbs and presses the pressing plate 131 with the foot in the state where the pressing plate 131 is raised, the pressing plate 131 is centered on a hinged portion of the board panel 110. Rotate to, the wire 132 connected to the pressing plate 131 is pulled out.

At this time, since the support pulley 160 protrudes upward, the wire 132 may be pulled more by the rotation of the pressing plate 131.

The wire 132 is wound around the first gear 140 through the first pulley 135, the support pulley 160, the through hole 112, and the second pulley 136, and again, the third pulley 137. It is connected to the tension spring 133 via).

Accordingly, when one end of the wire 132 is pulled, the first gear 140 on which the wire 132 is wound is rotated, and the first gear 140 is rotated by the rotation of the first gear 140. The second gear 150 meshed with the 140 rotates, and the wheel 120 rotates to advance the board apparatus.

When the driver foot on the pressing plate 131, the wire 132 is moved in the direction of the tension spring 133 by the restoring force of the tension spring 133 and the hinge spring 139.

Therefore, the first gear 140 is to be rotated in reverse, wherein the first gear 140 or the second gear 150 is one-way clutch 134 is mounted, only the idle rotation and the wheel 120 ), The rotational force is not transmitted.

The tension spring 133 is moved in the direction of the tension spring 133 by the restoring force, the pressing plate 131 is raised again.

At this time, the pressing plate 131 is raised by the stopper wire 170 to rotate by only a predetermined angle.

If the above operation sequence is repeated, the board unit moves forward.

Only one of the power generating unit 130, the first gear 140 and the second gear 150 may be mounted on the board panel 110, and as shown in FIGS. 1 and 2, the front board panel 110a. ) And the rear board panel 110b, respectively, to be operated using two feet.

In this case, as shown in FIG. 2, the wire winding the first gear mounted on the front board panel 110a and the wire winding the first gear mounted on the rear board panel 110b are in different directions. Wind the first gear.

By doing so, pressing the pressing plate mounted on the front board panel 110a and the pressing board mounted on the rear board panel 110b can cause the board apparatus to move forward.

In addition, the wire wound around the first gear mounted on the front board panel 110a and the wire wound around the first gear mounted on the rear board panel 110b are wound around the first gear in the same direction. The pressing plate mounted on the board panel 110b may be pressed to act as a brake.

In addition, by mounting the one-way clutch 134 in the opposite direction, when the foot plate 131 is stepped on, the board apparatus is advanced, and pressing the pressing plate 131 may be idle.

Second embodiment

The second embodiment rotates the wheel using a motor, and only the power generation unit is different from that of the first embodiment.

The power generating unit includes a motor mounted on the board panel, a power supply unit for supplying power to the motor, a switch for operating the motor, and a connection between the motor and the first gear to control the rotational force of the motor. 1 comprises a connecting member for transmitting to the gear.

Preferably, the power supply unit uses a battery, and the connection member may be a means for transmitting a rotational force of the motor, such as a wire, a chain, a timing pulley, and a belt, to the first gear.

At this time, when using the chain and the timing pulley for the connection member, the gear is mounted on the rotating shaft of the motor.

According to the second embodiment of the above structure, when the driver turns on the switch, the motor rotates, which causes the connection member to transmit the rotational force to the first gear.

As the first gear rotates, the second gear engaged with the first gear rotates, and as a result, the wheel rotates, thereby advancing the board apparatus.

Third embodiment

5 is a side view of a board apparatus according to a third embodiment of the present invention, FIG. 6 is a plan view of a board apparatus according to a third embodiment of the present invention, and FIG. 7 is a board apparatus according to a third embodiment of the present invention. 8 is a plan view of a pressing plate of the board apparatus according to the third embodiment of the present invention.

As shown in Figures 5 to 8, the third embodiment of the present invention, the board panel 310, the wheel 320, the first gear 340, the second gear 350, the power The generator 330 and the handle 380 have a general kickboard shape.

Only one of the first gear 340, the second gear 350, and the power generator 330 may be mounted on the board panel 310, and as shown in FIGS. 6 and 7, two may be mounted. It may be.

The board panel 310 is formed in a long rectangular shape, the wheel 320 is rotatably mounted on the bottom surface of the board panel 310, rollers disposed on the left and right of the board panel 310 321 and the rotating shaft 322 connecting the roller 321.

As shown in FIG. 7, the first gear 340 is rotatably mounted on the bottom surface of the board panel 310. To this end, the rotation shaft 341 is fixed to the bottom surface of the board panel 310. The first gear 340 is mounted on the rotation shaft 341 in parallel with the board panel 310.

As shown in FIG. 7, the second gear 350 is mounted on the rotation shaft 322 of the wheel 320 and is engaged with the first gear 340.

At this time, the first gear 340 and the second gear 350 are meshed at right angles to each other, the first gear 340 and the second gear 350 is a bevel gear or a helical gear to form a right angle. Do it.

The handle 380 is mounted to the front of the board panel 310, the direction wheel 381 is mounted to the bottom, the brake 390 is mounted to the rotating shaft 322 of the wheel 320 is A handle 391 connected to the brake 390 is mounted on the handle 380.

The power generating unit 330 rotates by transmitting power to the first gear 340, the pressing plate 331, the tension spring 333, the wire 332, the one-way clutch 334 and , The support pulley 360 and a plurality of pulleys.

The pressing plate 331 is composed of a left pressing plate 331a and a right pressing plate 331b, and one tension spring 333 and one wire 332 are respectively provided on the left pressing plate 331a and the right pressing plate 331b. And, it may be operated using one support pulley 360 and a plurality of pulleys, More preferably, as shown in Figures 5 to 8, the left pressing plate 331a and the right pressing plate 331b, respectively Two tension springs 333, two wires 332, one support pulley 360 and a plurality of pulleys are used to operate.

As shown in FIG. 5, the pressing plate 331 is hinged rotatably at one side to an upper front of the board panel 310, and as shown in FIG. 8, a first pulley 335 is provided at the rear thereof. It is installed.

At this time, the bottom surface of the pressing plate 331 and the upper surface of the board panel 310 is preferably to be connected by the stopper wire 370.

The support pulley 360 protrudes upward from the upper rear of the board panel 310 and is mounted to the rear of the first pulley 335.

The board panel 310 has a through hole 312 formed adjacent to the support pulley 360, and a bottom surface of the board panel 310 has a second pulley 336 adjacent to the through hole 312. The tension spring 333 is mounted on the bottom surface of the board panel 310.

One end of the wire 332 is connected to the pressing plate 331, and the other end of the wire 332 passes through the first pulley 335, the support pulley 360, the through hole 312, and the second pulley 336. The gear 340 is wound and connected to the tension spring 333.

In this case, the wire 332 is wound around the rotating shaft 341 of the first gear 340 in detail, the first gear 340, and to increase the frictional force with the wire 332 to the rotating shaft 341 Allow gratings or multiple grooves to be formed.

In addition, the tension spring 333 is preferably to be connected to the wire 332 in a relaxed state in order to pull the wire 332 taut.

When two wires 332 are mounted on each of the left pressing plate 331a and the right pressing plate 331b as shown in FIG. 6, the wire 332 moves the first gear 340 in the same direction. To wind.

One end of the wire 332 may be connected to the upper portion of the pressing plate 331, but preferably connected to the bottom surface of the pressing plate 331.

As shown in FIGS. 5 and 6, a third pulley 337 is mounted on the opposite side of the tension spring 333 so that the other end of the wire 332 is wound around the first gear 340. It may be connected to the tension spring 333 via the three pulleys (337).

In this case, when the wires 332 are two, one of the two wires 332 is wound around the first gear 340 in a counterclockwise direction and connected to the tension spring 333 via a third pulley 337. The remaining wire 332 is wound around the first gear 340 in a counterclockwise direction and connected to the tension spring 333 via a third pulley 337.

The third pulley 137 is preferably mounted so that the two rollers on one rotation shaft up and down, so that each of the two wires 132 is wound around each roller in the third pulley 137.

In addition, the first gear 340 or the second gear 350 is equipped with a one-way clutch 334, one-way clutch 334 is also called an overrunning clutch, which is in one direction It is a clutch that transmits torque only and is idle in the reverse direction.

The third embodiment having the above structure is operated as follows.

As shown in FIG. 5, when the driver climbs and presses the pressing plate 331 with the foot in the state in which the pressing plate 331 is raised, the pressing plate 331 is centered on a hinged portion of the board panel 310. Rotate to, the wire 332 connected to the pressing plate 331 is pulled down.

At this time, since the support pulley 360 protrudes upward, the wire 332 may be pulled more by the rotation of the pressing plate 331.

The wire 332 is wound around the first gear 340 through the first pulley 335, the support pulley 360, the through hole 312, and the second pulley 336, and again, the third pulley ( It is connected to the tension spring 333 via 337.

Accordingly, when one end of the wire 332 is pulled, the first gear 340 on which the wire 332 is wound is rotated, and the first gear 340 is rotated by the rotation of the first gear 340. The second gear 350 engaged with the 340 rotates, and as a result, the wheel 320 rotates to advance the board apparatus.

When the driver foot on the pressing plate 331, the wire 332 is moved in the direction of the tension spring 333 by the restoring force of the tension spring 333 and the hinge spring 339.

Therefore, the first gear 340 is to be reverse rotation, wherein the first gear 340 or the second gear 350 is equipped with a one-way clutch 334, only the idle rotation and the wheel 320 ), The rotational force is not transmitted.

The tension spring 333 is moved in the direction of the tension spring 333 by the restoring force, the pressing plate 331 is raised again.

At this time, the pressing plate 331 by the stopper wire 370 is raised to rotate only by a predetermined angle.

If the above operation sequence is repeated, the board unit moves forward.

Only one of the power generator 330, the first gear 340, and the second gear 350 may be mounted on the board panel 310, and two of the power generator 330, the first gear 340, and two left and right sides may be mounted as shown in FIGS. It can also be operated using two feet.

In addition, by mounting the one-way clutch 334 in the opposite direction, when the foot from the pressing plate 331, the board apparatus is advanced, and pressing the pressing plate 331 may be to be idle.

In addition, the left pressing plate 331a and the right pressing plate 331b are hinged to the board panel 310, one first gear 340 and the second gear 350 are mounted, and the first gear 340 is mounted. A third spherical gear (not shown) and a second spur gear (not shown) concentrically mounted on a rotation shaft 341 of the first and second meshes engaged with the first spur gear on the bottom surface of the board panel 310. A fourth spur gear (not shown) fitted with a gear (not shown) and a second spur gear are mounted. A wire connected at one end to the left pressing plate 331a winds the rotation axis of the third spur gear and the other end is a tension spring. The wire connected to the 333 and one end connected to the right pressing plate 331b may wind the rotation shaft of the fourth spur gear and the other end may be connected to the tension spring 333.

At this time, the third spur gear and the fourth spur gear have a diameter larger than that of the first spur gear and the second spur gear, and the first and second gears rotate more by the movement of the wire. You can make it move faster.

Fourth embodiment

The fourth embodiment rotates the wheels using a motor, and only the power generation unit is different from that of the third embodiment.

The power generating unit includes a motor mounted on the board panel, a power supply unit for supplying power to the motor, a switch for operating the motor, and a connection between the motor and the first gear to control the rotational force of the motor. 1 comprises a connecting member for transmitting to the gear.

Preferably, the power supply unit uses a battery, and the connection member may be a means for transmitting a rotational force of the motor, such as a wire, a chain, a timing pulley, and a belt, to the first gear.

At this time, when using the chain and the timing pulley for the connection member, the gear is mounted on the rotating shaft of the motor.

According to the fourth embodiment of the above structure, when the driver turns on the switch, the motor rotates, which causes the connection member to transmit the rotational force to the first gear.

As the first gear rotates, the second gear engaged with the first gear rotates, and as a result, the wheel rotates, thereby advancing the board apparatus.

The board device according to the present invention is not limited to the above-described embodiments, and can be implemented in various modifications within the allowable technical spirit of the present invention.

According to the board device of the present invention as described above has the following advantages.

First, the board device may be moved by the first gear, the second gear, and the power transmission unit even when the driver does not occupy the ground by foot.

Second, by making the power generating portion of the pressing plate and the wire, the tension spring and the one-way clutch, the board device can be moved when the driver presses or presses the pressing plate.

When the driver presses the pressing plate, there is an exercise effect such as moving up and down the stairs, and at the same time, the lower body exercise is performed while riding the board apparatus.

Third, by connecting the pressing plate and the board panel with a stopper wire, the pressing plate can be raised to rotate only by a predetermined angle.

Fourth, by mounting the support doddle can be pulled more wires so that the first gear is rotated more when the pressing plate is pressed once.

In addition, by connecting the wire to the bottom of the board panel, it is possible to prevent the driver from being caught in the wire, and to prevent the wire from being easily separated from the board panel.

Fifth, by mounting a hinge spring, the pressing plate can be easily raised.

Sixth, the board panel is separated into two hinges, and the wires are wound in different directions, so that the pressing plate can be pressed using both feet, so that the board device can be moved faster.

Seventh, by mounting the handle, the driving direction can be easily steered, and by dividing the pressing plate into left and right sides, the driver can press the pressing plate forward while alternately looking forward.

Eighth, it is possible to move the board apparatus by the electric system by using the power generating unit using a motor.

Claims (8)

delete A board panel; A wheel rotatably mounted on a lower portion of the board panel; A first gear mounted to a bottom surface of the board panel; A second gear mounted to the rotating shaft of the wheel and engaged with the first gear; It includes a power generating unit for rotating the first gear, The power generation unit, A pressing plate having one side hinged to an upper portion of the board panel; A tension spring mounted to the board panel; A wire having one end connected to the pressing plate and the other end connected to the tension spring, and wound around the first gear; Board device comprising a one-way clutch mounted to the first gear or the second gear. The method of claim 2, And a bottom surface of the pressing plate and an upper surface of the board panel are connected by stopper wires. The method of claim 2 or 3, A support pulley protrudes and is mounted on an upper portion of the board panel. And one end of the wire is wound around the support pulley and connected to a bottom surface of the pressing plate. The method of claim 2 or 3, The hinge device of the pressing plate one side and the board panel, characterized in that the hinge spring is mounted. A board panel formed by hinge coupling of the front board panel and the rear board panel; A wheel rotatably mounted on a lower portion of the board panel; A first gear mounted to a bottom surface of the board panel; A second gear mounted to the rotating shaft of the wheel and engaged with the first gear; It includes a power generating unit for rotating the first gear, The power generation unit, A pressing plate having one side hinged to an upper portion of the board panel; A tension spring mounted to the board panel; A wire having one end connected to the pressing plate and the other end connected to the tension spring, and wound around the first gear; It comprises a one-way clutch mounted to the first gear or the second gear, A support pulley protrudes and is mounted on an upper portion of the board panel, and one end of the wire is connected to a bottom surface of the pressing plate by winding the support pulley. And the wire is wound around the first gear mounted to the front board panel and the first gear mounted to the rear board panel in different directions. The method of claim 4, wherein The front of the board panel is equipped with a steering wheel mounted, The pressing plate is composed of a left pressing plate and a right pressing plate, The board panel, characterized in that the first gear, the second gear, the power generating unit and the support pulley respectively corresponding to the left pressing plate and the right pressing plate, respectively. A board panel; A wheel rotatably mounted on a lower portion of the board panel; A first gear mounted to a bottom surface of the board panel; A second gear mounted to the rotating shaft of the wheel and engaged with the first gear; It includes a power generating unit for rotating the first gear, The power generation unit, A motor mounted to the board panel; A power supply unit supplying power to the motor; A switch for operating the motor; And a connecting member connecting the motor and the first gear to transfer the rotational force of the motor to the first gear.

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