KR20070013176A - Water surfing board - Google Patents

Abstract

A water surfing board is provided to easily carry the water surfing board by separating a first body and a second body in a foldable manner. A water surfing board is separated into a first body(200) and a second body(300) in a foldable manner. The water surfacing board includes a closed chamber, a heat radiating plate, a closed chamber cover, a fuel gauge, a compass plate, a pressure regulating valve, a pair of skegs, a motor, a speed regulation driving section, a battery, a gear, a gear box, a fluid introduction opening, a power transmission shaft, a screw fixation member, a propelling screw, a pair of variable screw protection blades, a rear screw protection member, and a speed regulating mechanism. The power transmission shaft is connected to the gear to transmit power to the propelling screw. The speed regulating mechanism regulates the output of the motor and is associated with the speed regulation driving section.

Description

Water surfing board {Water surfing board}

1 is an overall perspective view of a water surf board according to the present invention

Figure 2 is an installation separation of the components provided on the upper surface portion of the water surf board according to the present invention

3 is a bottom perspective view of the water surfboard according to the present invention;

Figure 4 is a bottom perspective view (2) of the water surfboard according to the present invention

5 is an exploded view of the components provided in the sealed chamber of the water surfboard according to the present invention.

Figure 6 is an exploded view of the components for transmitting power of the water surfboard according to the invention

Figure 7 is a side cross-sectional view for transmitting power by the motor of the water surfboard according to the invention

8 is a perspective view of the sealed chamber cover of the water surfboard according to the present invention

9 is a state of use of the coupling pin and the coupling ring for fastening the first body portion and the second body portion of the "A" portion of the water surfboard according to the present invention of Figure 2

10 is an enlarged view of the universal joint of the power transmission shaft in the "B" portion of the water surfboard according to the present invention of FIG.

11 is a state of use of the screw anchor and the variable screw protection blade of the water surfboard according to the present invention.

12 is an enlarged view of a variable screw protection wing coupling portion of the "D" portion of the water surfboard according to the present invention of FIG.

Figure 13 is a perspective view of the speed control mechanism of the water surfboard according to the invention

Figure 14 is an exploded perspective view of the speed control drive unit of the water surf board according to the invention

15 is a cross-sectional view of the prevention cover and weight of the "C" portion of the water surfboard according to the present invention of FIG.

Figure 16 is a perspective view and a partial cross-sectional view of the skeg of the water surfboard according to the present invention

Figure 17 is a state of use carried in the bag by folding the water surf board according to the invention

18 is a state of use of the surfer enjoying the water surfboard according to the invention

<Explanation of symbols for main parts of drawing>

Surfboard: 100 Weight: 366

Powder: 150 Anti-Cover: 367

First Body: 200 Wires: 368

Bonding ring: 201 Battery: 370

Second Body: 300 Gears: 380

Coupling Pin: 301 Gearbox: 385

Closed room: 310 Power transmission shaft: 390

Heat Sink: 320 Universal Joint: 390a

Thermal Induction Machine: 325 Screw Fixture: 391

Airtight chamber cover: 330 Propulsion screw: 392

Fuel gauge: 331 Variable screw guard wing: 393

Compass: 332 Rear screw protector: 394

Pressure regulating valve: 333 Fluid inlet: 395

Skag: 340 Foot: 400

Skeg Pin: 341 Speed Control: 500

Skew Binding: 342 Acceleration Lever: 510

Return spring: 343 Hand rest: 520

Motor: 350 Wrist Wear: 530

Speed Control Drive: 360 Wire: 540

Chamber: 361 Magneto Generator: 600

Speed Control Pin: 362 Solar Collector Plate: 700

Secondary acceleration lever: 363 Electric converter: 750

1st acceleration lever: 364 Bag: 800

Through Hole: 365

The present invention relates to a water surfboard, and more specifically, to install a motor in the water surfboard and configured to enjoy surfing even in the absence of wind or waves, the fuel is not a method of using a rechargeable type of electricity. To operate the motor and to provide the self-generator and solar energy collection plate to extend the running time to charge the battery in the water surfboard itself in the above charge, and to surfers enjoying the water surfboard In consideration of safety, it is considered to stop the rotation of the high-speed screw when overturning, and the first body and the second body are separated by folding type so that the water surfboard is easy to carry, the purchase cost is low, and the storage and maintenance are easy. The present invention relates to a water surfboard manufactured.

As the standard of living increases, the population of leisure activities is increasing and the types of leisure are being upgraded. Surfing is one of the leisure activities that can be enjoyed in the water. In Korea, there is no wave to enjoy surfing, so windsurfing is the mainstream.

However, the windsurfing can not be enjoyed on a day when the wind is weak or lacking, the bulky, uncomfortable transportation, and the equipment is expensive, there is a burden for ordinary people to ride. In addition, in order to enjoy windsurfing, the direction of the wind must be used, so the skill of using sails according to the wind must be acquired separately. Therefore, it is necessary for the general public to enjoy windsurfing.

In addition, conventionally, a surfboard has been produced that can be enjoyed without the impact of wind or waves by mounting the engine on the water surfboard, but when the size and volume is too moved, there is a difficulty to move using an additional moving device, In terms of cost, since the engine used for a general surfboard uses a pump engine, the cost of purchasing an existing surfboard is expensive in consideration of its high cost.

The raw material used in the engine is expensive and there is a difficulty because it is limited to the operating time of the surfboard, the conventional surfboard is the power of the power is transmitted to the screw by the propulsion of the engine is the acceleration of the surfboard is to be accelerated Relying on the power of the engine to provide an expensive engine, resulting in a large amount of fuel consumption is difficult to maintain and manage.

In addition, to further improve the stability of the surfboard equipped with the existing engine to produce the water surfboard of the present invention.

In order to solve the above problems, the present invention can install a motor on the water surfboard to enjoy surfing even where there is no wind or waves at all, the volume or weight of the entire equipment is light, easy to assemble, easy to carry and price It is inexpensive and can be enjoyed by the general public, and minimizes the resistance of the fluid during friction with the fluid, and has a scar and variable screw protection wings at the site of friction with the fluid so as to prevent acceleration. In addition, the motor is operated by using the electric charging method, and the self-power generator and the solar energy collecting plate can be extended to extend the running time in order to charge the battery in the water surfboard itself. Water surfing board to improve the safety when surfing using surfboard It is an object to provide.

In the present invention, the water surfboard is separated into the first body portion 200 and the second body portion 300 in the waterborne surfboard 100 is formed by contact implantation, the waterborne surfboard 100 formed in a streamlined form It is provided with a pair of footrest 400 is installed on the upper surface of the first body portion 200 and the second body portion 300, and a closed chamber 310 in the upper end of the second body portion 300 ,

The bottom surface of the sealed chamber 310 is provided with a heat sink 320 for radiating heat of the sealed chamber 310,

A sealed chamber cover 330 is provided to seal the upper portion of the sealed chamber 310 and block external fluid or air.

An upper surface of the sealed chamber cover 330 is provided with a fuel gauge 331 connected with the storage battery to inform the storage amount of the storage battery.

Compass plate 332 is provided on the upper surface of the sealed chamber cover 330 to prevent distress,

A pressure control valve 333 is provided on an upper surface of the sealed chamber cover 330 to adjust the pressure inside and outside the sealed chamber 310.

A pair of scags 340 are provided to induce straightness on both sides of the lower surface of the second body portion 300 of the water surfboard 100 and to induce straightness and increase speed by reducing surface friction. Become,

A motor 350 is provided to generate power in the sealed room 310 of the water surfboard 100,

Speed control drive unit 360 for adjusting the speed in connection with the motor 350 is provided in the closed chamber 310,

The storage chamber 370 is provided with a storage battery 370 for supplying a current to the motor 350,

The gear 380 is connected to the motor 350 and transmits power to the closed chamber 310.

Gear box 385 for sealing the gear 380 is provided,

A fluid inlet 395 having a streamlined recessed shape is provided to control the flow of fluid at the lower end of the lower surface of the second body part 300 through the closed chamber 310.

When the second body portion 300 through the closed chamber 310 is horizontally connected to the propulsion screw 392 provided in the fluid inlet 395 of the lower end, it is connected to the gear 380 to the propulsion screw 392 A power transmission shaft 390 for transmitting power;

A screw holder 391 for protecting and fixing the propelling screw 392 to the fluid inlet 395 of the lower surface of the second body part 300 is provided.

The screw holder 391 is provided with a propulsion screw 392 is connected to the power transmission shaft 390 to propel the water surfboard 100,

In order to protect the propulsion screw 392 to the screw holder 391, in order to minimize the resistance of the fluid, a pair of variable screw protection blades 393 are provided on both sides of the screw holder 391,

The rear screw protector 394 is provided to protect the propulsion screw 392 at the lower end of the rear side of the second body part 300 and to secure the safety of the surfer.

In order to control the output of the motor 350 and in conjunction with the speed control driver 360 to provide a water surf board 100 that is provided with a speed control mechanism 500 is connected to the water surf board and wired.

In order to achieve the above object of the present invention will be described in detail based on the accompanying technical details as follows.

1 is an overall perspective view of a water surf board according to the present invention,

Figure 2 is an installation separation of the components provided on the upper surface portion of the water surf board according to the present invention,

3 is a bottom perspective view of the water surfboard according to the present invention;

Figure 4 is a bottom perspective view (2) of the water surf board according to the present invention,

5 is an exploded view of the components provided in the sealed chamber of the water surfboard according to the present invention;

Figure 6 is an exploded view of the components for transmitting power of the water surfboard according to the invention,

Figure 7 is a cross-sectional side view for transmitting power by the motor of the water surf board according to the present invention,

8 is a perspective view of a sealed chamber cover of the water surfboard according to the present invention;

9 is a state diagram of the use of the coupling pin and the coupling ring for fastening the first body portion and the second body portion of the "A" portion of the water surf board according to the present invention of Figure 2,

10 is an enlarged view of the universal joint of the power transmission shaft in the "B" portion of the water surf board according to the present invention of FIG.

11 is a state of use of the screw anchor and the variable screw protective blade of the water surfboard according to the present invention,

12 is an enlarged view of the variable screw protection wing coupling portion of the "D" portion of the water surfboard according to the present invention of Figure 11,

13 is a perspective view of a speed control mechanism of the water surfboard according to the present invention,

Figure 14 is an exploded perspective view of the speed regulating drive unit of the water surf board according to the present invention,

15 is a cross-sectional view of the prevention cover and the weight of the "C" portion of the water surfboard according to the present invention of Figure 14,

16 is a perspective view and a partial cross-sectional view of the skeg of the water surf board according to the present invention,

17 is a state diagram used to fold the water surf board according to the invention carried in the bag,

18 is a state diagram used of the surfer enjoying the water surfboard according to the present invention.

As a way to enjoy the water surfing board 100 of the present invention, as shown in Figure 1 by using the footrest 400 provided on the top surface of the water surfing board 100, the surfer with two feet balanced on the water surfing board 100 There is a method of surfing while holding the, and in addition to the footrest 400 may be provided with a handle and an elbow stand on the upper surface of the water surfboard to grab the handle with both hands in a bent position to surf.

1 and 17, the water surfboard 100 of the present invention is separated into the first body portion 200 and the second body portion 300 is formed to be foldable for easy transport and convenient storage when moving. In order to ensure that the first body portion 200 and the first body portion 300 is separated into a foldable form to be folded and folded when possible by the puff installed on the bottom surface of the water surfboard 100, When the first body part 200 and the second body part 300 are folded, the first body part 200 and the second body part 300 are provided so as to be easily stored and moved in the bag 800 that can be accommodated, as shown in the enlarged view of FIG. 9. When the first body part 200 and the second body part 300 are connected to each other by being fastened by the coupling pin 301 of the second body part 300 and the coupling ring 201 of the first body part 200, The body part 200 and the second body part 300 are integrated to form the water surfboard 100.

In addition, each of the first body part 200 and the second body part 300 is filled with a flame retardant having buoyancy, and thus, the surface cracks of the first body part 200 and the second body part 300, and the outside thereof. It is filled with flame retardant inside such as impact and poor waterproofing, and it fundamentally blocks the inflow of water from the outside and acts as a buffer for strong impact from the outside, preventing surface cracks and fractures. When it is filled with flame retardant, it is impossible to burn and prevent sinking.

1 and 2, in the pair of footrests 400 installed on the upper surface of the first body part 200 and the second body part 300 on the water surfboard 100 formed in a streamline shape, One footrest 400 is provided on the upper surface of the first body portion 200, and one footrest 400 is provided on the upper surface of the second body portion 300, and the footrest 400 is a footer's foot size and stride length. It is installed to be variable to fit the foot size can be adjusted according to the adjustable device to adjust the size of the foot by the screw.

As shown in Figure 2 is an exploded perspective view of the components provided on the upper surface portion of the water surf board is provided with a closed chamber 310 in the upper end of the second body portion 300, the bottom surface of the sealed chamber 310 In order to dissipate heat generated by the motor 350 and the storage battery 370 or the like provided in the sealed chamber 310, the bottom surface of the sealed chamber 310 is configured as a heat sink 320. Heat generated in the motor 350 and the storage battery 370 is transferred to the heat conductive inductor 325 installed at the bottom of the motor 350 and the storage battery 370, and is connected to the bottom surface of the heat conductive inductor 325. The heat sink 320 is transferred to the heat sink 320, and since the heat sink 320 is interviewed with the fluid, the heat of the heated heat sink 320 is transferred to the cold fluid, so that the heat generated by the motor 350 and the storage battery 370 is a thermal induction guide 325. Heat is released by the heat sink 320. It acts as a principle of heat dissipation, and also serves as a support band for supporting the motor and the storage battery.

As shown in FIG. 8, an upper portion of the sealed chamber 310 is sealed, and a sealed chamber cover 330 is provided to block external fluid or air, and a storage battery is disposed on an upper surface of the sealed chamber cover 330. A fuel gauge 331 is provided in connection with 370 to inform the storage amount of the storage battery 370. A compass plate 332 is provided on the upper surface of the sealed chamber cover 330 to prevent distress. A pressure control valve 333 is provided on the upper surface to adjust the pressure inside and outside the sealed chamber 310.

As shown in FIGS. 5 and 6, power is transmitted from the motor 350 provided in the closed chamber 310 to the propulsion screw 392 by the motor 350 provided in the closed chamber 310. This will be described in detail the process of power is transmitted to the propulsion screw 392 as follows.

The motor 350 that receives the current from the battery 370 generates power so that the power generated by the motor 350 is transmitted to the gear 380 connected to the motor 350, and the gear 380. Power transmission shaft 390 is connected to the power transmission to transfer the power to the propulsion screw 392 is connected to the power transmission shaft 390 power transmission to rotate the propulsion screw 392 in an endless track. It consists of a process.

In the power transmission shaft 390 is connected to the gear 380 is penetrated into the bottom surface of the second body portion 300 from the inside of the second body portion 300 receiving portion is connected to the propulsion screw 392, FIG. As shown in FIG. 6, the power transmission shaft 390 is connected to two axes which are inclined at different angles and is connected to the propulsion screw 392 non-horizontally, as shown in an enlarged view in FIG. 10. The power transmission shaft 390 is connected to the universal joint 390a such that the universal joint 390a is connected to the non-horizontal power transmission shaft 390 so as to be parallel to the propulsion screw 392 at the portion where the two shafts are connected. The power is transmitted to the propulsion screw 392.

In addition, as shown in FIG. 4, a pair of power transmission shafts 390 are provided from the gear 380 connected to the motor 350 at the bottom of the second body portion of the water surfboard, and the second body portion is provided. (300) is provided with a pair of screw holders 391 for protecting and fixing each of the propulsion screw (392) in the fluid inlet (395) of the lower surface,

Each screw holder 391 is provided with a pair of propulsion screws 392 connected to the respective power transmission shafts 390 to propel the water surfboard 100,

Each of the screw holders 391 to protect the respective propulsion screw (392), in order to minimize the resistance of the fluid is provided with a pair of variable screw protection blades (393) on each side of each screw holder (391),

A pair of rear screw protectors 394 are provided to protect each of the propulsion screws 392 at the end of the fluid inlet 395 at the lower rear side of the second body part 300 and to secure the safety of the surfer. It can be characterized in that the power transmission device is provided.

Since the device for transmitting the power of the pair is provided on the bottom of the second body portion 300, it is preferable that the acceleration of the water surfboard 100 is provided to increase the speed.

As shown in FIG. 7 or 18, a pair of rear screw protectors 394 are provided to secure the safety of the surfer, so that only half of the propulsion screw protrudes on the bottom surface of the water surfboard. Can be provided.

In the bottom perspective view of the water surfboard shown in FIG. 3 or 4, a fluid inlet 395 having a streamlined recessed shape is controlled by controlling a flow of fluid at a lower surface of the lower surface of the second body part 300 through the sealed chamber 310. ), The flow of the fluid flows to the upper end of the fluid inlet by the acceleration of the water surfboard during the driving of the water surfing boat is in contact with the introduced fluid to the propelling screw provided in the lower end of the fluid inlet, wherein Since the fluid flows smoothly through the fluid inlet and the flow of fluid flowing through the fluid inlet is free, the contact area between the propulsion screw and the fluid is large and the rotational speed of the propulsion screw is minimized, thereby accelerating the water surfboard. Can be increased.

And, as shown in Figure 5, the storage battery 370 for supplying a current to the motor 350 provided in the closed chamber 310 is a method of supplying a current by charging the current after a predetermined time according to the charging amount By the disappearance of the surfer (a person who enjoys the water surfboard) may cause a danger in the sea when the water surfboard 100 is running, and also may cause a danger to the surfer, such as distress to prevent the discharge of the battery 370 In addition, a self-generator 600 may be provided provided in the sealed chamber 310 to extend the use time by charging the storage battery 370.

In addition, the solar energy collector plate 700 that accumulates solar energy on the upper surface of the first body part 200 of the water surfboard 100 may be charged with the storage battery 370 in FIGS. 1 and 2. As shown in FIG. 2, an electrical converter 750 is provided in the closed chamber 310 of the second body 300 to convert energy accumulated in the solar energy collecting plate 700 into electricity. And provided as shown in FIG. 5 to provide electricity generated by the electrical conversion device 750 to charge the storage battery 370 in association with the storage battery 370.

As shown in FIG. 11, in the propulsion screw 392 located at the lower end of the lower surface of the second body part 300 on the water surfboard 100, the protection and fixing of the propulsion screw 392 and the safety of the surfer are shown. A screw holder 391 is provided to avoid direct exposure of the propulsion screw 392 to the cycle, and protects the propulsion screw 392 to the screw holder 391, and screw holder 391 to minimize the resistance of the fluid A pair of variable screw protection blades 393 are provided on both sides to minimize the resistance of the water to the driving force of the water surfboard 100 generated by the high speed rotation of the propulsion screw 392. In order to provide a variable screw protective blade (393) is formed to have a blade-like shape.

Also, the

As shown in Figure 16 is an explanatory view showing the lift generated by the skeg 340 when running the water surfboard 100, the water surfboard 100 of the present invention due to the skeg 340 when surfing Drive at high speed while dividing underwater water.

Referring to the skeg 340 of the water surfboard of the present invention in detail as follows.

The skeg 340 is easy to attach and detach, and the skeg 340 is divided into a streamlined skeg pin 341 and the skeg binding unit 342 so as to be foldable. A return spring 343 is provided at a portion at which the pin 341 and the skeg binding unit 342 are connected, and the skeg pin 341 is attached to the water surfboard 100 by attaching the skeg 340. Fold and bound to the skeg binding unit 342 having a space that can include the skeg pin 341 can prevent convenience and breakage during movement.

Since the return spring 343 is provided at a portion where the skeg pin 341 and the skeg binding unit 342 are connected, obstacles such as a person or an object in the water while the water surfboard 100 is running, the skeg pin 341. In the event of a collision with the return spring 343, the skeg pin 341 is folded back to provide a shock-absorbing effect due to the collision with the skeg pin 341, thereby providing safety not to injure a person due to the collision. do.

In addition, the back pin is folded back due to a collision with the pin pin 341, and the pin pin 341 is restored to the front by the return spring ring 343.

In FIG. 14, in the speed control driver 360 for controlling the speed in connection with the motor 350 in the closed chamber 310, the speed control pin 362 is provided to induce the speed control of the chamber 361. Wow,

A secondary acceleration lever 363 is provided on the chamber 361 to distribute the speed control.

A primary acceleration lever 364 is provided on the secondary acceleration lever 363 to adjust the speed control.

Through holes 365 that can pass freely through the primary acceleration lever 364 and the secondary acceleration lever 363 is provided,

The primary acceleration lever 364 and the secondary acceleration lever 363 is inserted into the through hole 365 connected to the secondary acceleration lever 364 at the same time the operation of the primary acceleration lever 364 is also operated to the chamber ( A weight 366 provided with the speed adjusting pin 362 of the 361 is provided,

A weight cover 366 is provided on an upper surface of the primary acceleration lever 364 to prevent an external loss, and a prevention cover 367 for accommodating the weight 366 is provided.

In order to operate the primary acceleration lever 364, a speed regulating driving part 360 having a wire 368 to be interlocked with the speed regulating mechanism 500 is provided.

In the cross-sectional view of the prevention cover and the weight shown in FIG. 15, the surfer is in a state of pulling the acceleration lever 510 of the speed regulating mechanism 500 at the time of overturning of the water surfboard 100, wherein the weight 366 ) Is moved to the prevention cover 367, and at the same time the secondary acceleration lever 363 is returned to its original state to stop the rotation of the propulsion screw 392, and also cut off the power provided in the chamber.

The weight 366 is moved to the prevention cover 367 when the overturning of the water surfboard 100 in accordance with the through hole 365 connected to the primary acceleration lever 364 and the secondary acceleration lever 363. The free fall method moves to the prevention cover 367 provided on the upper surface of the primary acceleration lever 364. At this time, the secondary acceleration lever 363 is a high speed rotation of the propulsion screw 392 is stopped and returned to the original state because the force to return to the original position by the spring, the speed provided in the chamber 361 As the control pin 362 is first returned to its original state, the power supply associated with the speed control pin 362 is also interrupted.

On the contrary, when the surfer pulls the acceleration lever 510 of the speed regulating mechanism 500 when driving the water surfboard 100, the weight 366 is already provided at the primary acceleration lever 364 and the secondary acceleration lever 363. Moved by the through hole 365 is positioned in conjunction with the speed control pin 362 provided in the chamber 361 to accelerate the speed control pin 362.

This is a safety device provided to the surfer to eliminate the risk of the surfer due to the rapid rotation of the propulsion screw (392) during the overturning of the water surf board 100 by the operating principle of the weight (366) of the propulsion screw (392). It prevents high-speed rotation and cuts off power supply board of water surfboard.

As shown in FIG. 13, the speed regulating mechanism 500 capable of adjusting the output of the motor 350 is connected to the surfer in a wired manner, and the speed regulating mechanism 500 is connected to the speed regulating driving part 360. A wire 368, an acceleration lever 510 for accelerating the output of the motor 350 connected through the wire 368, a handle support 520 for supporting the acceleration lever 510, and the handle One side of the support 520 is composed of a wrist wearing member 530 which is provided to be removable. The wrist wearing member 530 is provided on one side of the handle support 520 to be detachable as a detachable means, so that the wrist support member 520 can be easily grasped even when the handle support 520 is missed.

The position where the conventional speed control mechanism 500 is provided is provided on the upper surface of the second body part 300. Accordingly, when the water surfboard 100 is rolled over, the speed control mechanism 500 is positioned under the fluid to receive the water. There is difficulty in attracting the surfboard 100 to its original state, and as shown in FIG. 1, the speed regulating mechanism 500 is provided on the lower end of the second body part 300. ) It can be easily attracted to its original state during the rollover, and is easily restored by pulling the acceleration lever 510 of the speed control mechanism 500.

According to the present invention, the motor can be installed on the water surfboard to enjoy surfing even in the absence of wind or waves at all, and the first body portion and the second body portion are separated by folding, so that the water surfboard can be easily carried and assembled. It is simple, and the volume and weight of the whole equipment is light, and the price is low so that the general public can enjoy it casually. Instead of using oil of the high oil price as a raw material, it is made by electricity, and the battery in the water surfboard itself. It is equipped to charge, and the running time according to it can also be used for a long time, and when using the water surfboards to enjoy surfing to further improve the safety when enjoying surfing.

Claims (6)

In the water surface surfboard 100, which is separated into the first body portion 200 and the second body portion 300 and is foldable, the first body portion 200 on the water surface surfboard 100 formed in a streamlined shape. And a pair of footrests 400 installed on the upper surface of the second body part 300 and a closed chamber 310 at an upper end of the second body part 300, The bottom surface of the sealed chamber 310 is provided with a heat sink 320 for radiating heat of the sealed chamber 310, A sealed chamber cover 330 is provided to seal the upper portion of the sealed chamber 310 and block external fluid or air. An upper surface of the sealed chamber cover 330 is provided with a fuel gauge 331 connected with the storage battery to inform the storage amount of the storage battery. Compass plate 332 is provided on the upper surface of the sealed chamber cover 330 to prevent distress, A pressure control valve 333 is provided on an upper surface of the sealed chamber cover 330 to adjust the pressure inside and outside the sealed chamber 310. A pair of scags 340 are provided to induce straightness on both sides of the lower surface of the second body portion 300 of the water surfboard 100 and to induce straightness and increase speed by reducing surface friction. Become, A motor 350 is provided to generate power in the sealed room 310 of the water surfboard 100, Speed control drive unit 360 for adjusting the speed in connection with the motor 350 is provided in the closed chamber 310, The storage chamber 370 is provided with a storage battery 370 for supplying a current to the motor 350, The gear 380 is connected to the motor 350 and transmits power to the closed chamber 310. Gear box 385 for sealing the gear 380 is provided, A fluid inlet 395 having a streamlined recessed shape is provided to control the flow of fluid at the lower end of the lower surface of the second body part 300 through the closed chamber 310. When the second body portion 300 through the closed chamber 310 is horizontally connected to the propulsion screw 392 provided in the fluid inlet 395 of the lower end, it is connected to the gear 380 to the propulsion screw 392 A power transmission shaft 390 for transmitting power; A screw holder 391 for protecting and fixing the propelling screw 392 to the fluid inlet 395 of the lower surface of the second body part 300 is provided. The screw holder 391 is provided with a propulsion screw 392 is connected to the power transmission shaft 390 to propel the water surfboard 100, In order to protect the propulsion screw 392 to the screw holder 391, in order to minimize the resistance of the fluid, a pair of variable screw protection blades 393 are provided on both sides of the screw holder 391, The rear screw protector 394 is provided to protect the propulsion screw 392 at the lower end of the rear side of the second body part 300 and to secure the safety of the surfer. Water surfboard, characterized in that the speed control mechanism 500 is connected to the water surfboard and wired in conjunction with the speed control driver 360 to adjust the output of the motor 350. According to claim 1, A pair of power transmission shaft 390 is provided from the gear 380 connected to the motor 350, each of the propulsion screw 392 to the lower end of the lower surface of the second body portion 300. A pair of screw holders (391) for protecting and fixing is provided, Each screw holder 391 is provided with a pair of propulsion screws 392 connected to the respective power transmission shafts 390 to propel the water surfboard 100, Each of the screw holders 391 to protect the respective propulsion screw (392), in order to minimize the resistance of the fluid is provided with a pair of variable screw protection blades (393) on each side of each screw holder (391), A pair of rear screw protectors 394 are provided to protect each of the propulsion screws 392 at the lower end of the rear surface of the second body portion 300 and to secure the safety of the surfers, and a pair of power transmission devices are provided. Water surfboard characterized in that The water phase of claim 1, wherein a self-generator 600 is provided in the sealed room 310 to prevent discharge of the storage battery 370 and to prolong the use time by charging the storage battery 370. Surfboard The method of claim 1, wherein the charging of the storage battery 370 is provided with a solar energy collector plate 700 for accumulating solar thermal energy on the upper surface of the first body portion 200 of the water surf board 100, Water surfboard, characterized in that the electrical converter 750 is provided in the closed chamber 310 of the second body portion 300 to convert the energy accumulated in the solar energy collector plate 700 into electricity According to claim 1, In the speed control drive unit 360 for adjusting the speed in connection with the motor 350 in the closed chamber 310, The chamber 361 is provided with the speed control pin 362 to induce speed control; A secondary acceleration lever 363 is provided on the chamber 361 to distribute the speed control. A primary acceleration lever 364 is provided on the secondary acceleration lever 363 to adjust the speed control. Through holes 365 that can pass freely through the primary acceleration lever 364 and the secondary acceleration lever 363 is provided, The primary acceleration lever 364 and the secondary acceleration lever 363 is inserted into the through hole 365 connected to the secondary acceleration lever 364 at the same time the operation of the primary acceleration lever 364 is also operated to the chamber ( A weight 366 provided with the speed adjusting pin 362 of the 361 is provided, A weight cover 366 is provided on an upper surface of the primary acceleration lever 364 to prevent an external loss, and a prevention cover 367 for accommodating the weight 366 is provided. Water surfboard, characterized in that the wire 368 is provided to be interlocked with the speed control mechanism 500 to operate the primary acceleration lever 364 The water surfboard according to claim 1, wherein the speed control mechanism (500) is provided at the lower end of the second body portion (300).

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