KR101918169B1 - foldable water craft - Google Patents

Abstract

The present invention provides a foldable water craft which is provided with a folding type structure to minimize volume to be easily stored and carried, and comprises: a base unit having a propulsion means having an electric motor supplied with power in a lower end thereof to provide a propulsion force, and provided with an electric condenser mutually electrically connected to supply power to the propulsion means; an underwater blade unit having a pair of main blade units arranged to be symmetrical to each other at both sides of the base unit, wherein one end is provided with a folding type by being individually hinged to both sides of a lower portion of the base unit for the other end to rotate in a lateral direction in a state of being unfolded, and an auxiliary blade unit of which one end portion is hinged to the other end of the main blade unit to be provided in a folding type, and rotated for the other end to head for an upper side in a state of being unfolded; and a buoyancy support body individually provided at both sides of an upper portion of the base unit, detachably connected to a blade fixing unit connected to support a gap between the auxiliary blade unit and the base unit, provided with an expansion type structure of which volume is selectively controlled in accordance with filling a gas, and provided with a buoyancy body spaced at an upper side of the main blade unit.

Description

Foldable water craft

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a foldable watercraft, and more particularly, to a foldable watercraft having a foldable structure and having improved storage and portability to minimize volume.

Generally, a boat refers to a small boat propelled by a man power using a furnace or the like or propelled by an internal combustion engine such as a motor. These boats have been mainly used for transportation or fishing, but recently, as the leisure culture has spread and the population enjoying water leisure sports has been increasing, it is widely used for water leisure activities.

Here, boats used for water and leisure are provided in the form of small vessels such as watercrafts, yorks, and kayaks. It is a trend that individuals directly store or transport the boats to enjoy water sports conveniently.

However, conventional boats are bulky and heavy in weight, so that they are difficult to transport and require a large space for storage. Accordingly, the conventional boat is provided with a built-in boat capable of disassembling and assembling the respective components, or a folding boat which can be folded in a length or width direction so as to reduce the volume of the hull, The prior art is disclosed.

However, since the conventional assembled boat is complicated to be assembled, it takes a considerable time to disassemble or assemble each constituent part, and the connecting parts for joining the respective constituent parts must be managed separately, which is troublesome for the user.

In addition, the folding boats of the related art have a problem in that the reduction in volume is so small that the portable and storage convenience is not greatly improved, and that the folded portions corresponding to the folding order are folded or unfolded sequentially in order to use or store the boats.

On the other hand, conventional boats are equipped with hydrofoils at the bottom of the hull. In the case of a ship equipped with hydrofoil, a lift is generated by the hydrofoil during sliding, and the hull is floated on the water, so that the resistance of the bottom portion due to the viscosity and flow of the water can be reduced. Therefore, it is possible to travel with a low power even though the influence of wave is reduced, so that it is possible to make a relatively quiet voyage.

However, when the hydrofoil is assembled by applying to the conventional assembling and folding boats, it is necessary to assemble the boat so that the bottom of the boat is spaced apart from the ground at a predetermined distance so as to prevent breakage of the hydrofoil, There is a problem in that an apparatus or space of the apparatus is required.

Korean Patent Publication No. 10-1999-0046647

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a foldable watercraft having a foldable structure for minimizing the volume and improved storage and portability.

In order to solve the above-mentioned problems, the present invention is characterized in that a propulsion means including an electric motor, which is supplied with electric power and provides a propulsion power, is installed at a lower end portion, and an electric capacitor, which is electrically connected to supply power to the propulsion means, A base portion provided on the base; A main wing portion which is arranged to be symmetrical to both sides of the base portion and which is pivotally connected to both sides of the lower portion of the base portion so as to be hinged to each other, And an auxiliary wing portion that is hingedly connected to the other end portion of the main wing portion and is folded and folded so that the other end portion of the auxiliary wing portion is rotated in an unfolded state toward the upper side; And an expansion type structural body provided on both sides of the upper portion of the base portion and detachably connected to the vane fixing portion connected to support between the auxiliary vane portion and the base portion and being selectively bulky as the gas is filled. And a buoyancy support body having a buoyancy member spaced above the main wing portion.

The main wing portion extends obliquely toward the other end so that the lift force distribution region of the buoyancy support body is increased. The auxiliary wing portion extends obliquely toward the other end, and has an inclination angle corresponding to mutually overlapping the main wing portion in the folded state It is preferable to set it.

At this time, the base portion is provided with a hinge rotation portion protruding from an inlet side edge of a laterally opened fixing groove portion and having a hinge slot hole formed along a longitudinal direction thereof. One end portion of the main wing portion is provided with a hinge And a wing hinge shaft that is hingedly connected to the hinge rotation part through the hinge slot hole and is slidably moved along the hinge slot when the hinge rotation part is inserted into the fixing groove part, .

One end of the vane fixing part is hingedly connected to the side of the base part so as to be foldable and the other end is detachably coupled to the other end of the auxiliary vane part, It is preferable that the rotation is restrained and fixed.

Preferably, the one end portion of the vane fixing portion is provided with a multi-axis rotation portion which is rotated in the up-down direction and the back-and-forth direction.

Through the above-mentioned solution, the folding watercraft according to the present invention provides the following effects.

First, the buoyancy support provided on both sides of the upper part of the base part is provided with a lifting force in a state where the underwater wing part provided at the lower part is immersed in water during the water movement, so that the buoyant state is maintained by being separated from the water surface during traveling, So that the energy efficiency of the propulsion means can be further improved.

Second, the main wing portion provided at both sides of the lower portion of the base portion, the auxiliary wing portion provided at the other end portion of the main wing portion, and the wing fixing portion connected to support between the auxiliary wing portion and the base portion are all fold- And can be miniaturized to a minimum volume in the folded state, so that storage and portable convenience can be remarkably improved.

Third, since the main wing portion extends obliquely toward the rear side toward the other end, the length of the lifting region in which the lifting force acts is increased to increase the length of the lifting body, so that the trimming phenomenon can be prevented, Even if the center of gravity is moved by a person on board, it can be stably lifted, which can further improve the stability of water running.

Fourth, since the wing fixing portion is rotated in multiple directions in the vertical direction and the back-and-forth direction, contact with the wing portion in the folded state is prevented to minimize wear and tear due to interference, So that the volume can be further miniaturized.

Fifth, when the wing fixing part is rotated in the vertical direction and the front-rear direction, the multi-shaft is rotated, but when the wing part is fixed in the unfolded state for traveling, the rotation is fixed in a restrained state. Therefore, after the buoyancy supporting body fixed to the wing fixing part is separated from the water surface, The parallel state with the water wing, which is the initial form, can be maintained.

Sixth, the folding type watercraft is different from the conventional method of assembling an underwater wing in a hull. Unlike the conventional method of assembling an underwater wing in a hull, the folding wing bike is assembled only by inserting the wing fixing portion so that the floating body is disposed on the upper side after the water wing portion is opened. A separate device or space is not required, and the assemblability can be further improved.

1 is a perspective view showing a folding watercraft according to an embodiment of the present invention;
2 is a bottom view of a foldable watercraft according to an embodiment of the present invention;
3 is a side view of a folding watercraft according to an embodiment of the present invention;
4 is a rear view showing a state in which a foldable watercraft is floating in an aquarium according to an embodiment of the present invention;
5 is an enlarged view of a portion of a foldable watercraft connected to an underwater wing portion of a base portion according to an embodiment of the present invention.
6A and 6B are schematic views showing a state in which a foldable water bike is deployed according to an embodiment of the present invention;

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

FIG. 1 is a perspective view of a foldable watercraft according to an embodiment of the present invention, FIG. 2 is a bottom view of a foldable watercraft according to an embodiment of the present invention, and FIG. FIG. 4 is a rear view showing a state in which a foldable water bike according to an embodiment of the present invention is floating in an aquarium, FIG. 5 is a side view showing a folding water bike according to an embodiment of the present invention, FIG. 6A and FIG. 6B are schematic views showing a state in which the foldable watercraft is deployed according to an embodiment of the present invention. FIG.

1 to 6B, the foldable watercraft 100 according to an embodiment of the present invention includes a base portion 10, an underwater wing portion 20, and a buoyancy support 30.

Here, the foldable watercraft 100 may be used as a means for watercraft movement on rivers, lakes, coasts, and the like. The foldable watercraft 100 may be manufactured in various sizes to accommodate one to many people according to the design. The foldable watercraft 100 may be folded to minimize the total volume and may be easily carried and transported have.

In detail, the base portion 10 may have an outer profile formed in a streamline shape and may be arranged in a vertical direction. At this time, the base portion 10 may be formed of a metal material such as aluminum having light weight, corrosion resistance, salt resistance and durability, and a fiber reinforced plastic (FRP) material excellent in strength and corrosion resistance.

Here, the base unit 10 is provided with a propelling means 11 at a lower end thereof. In detail, the propelling means 11 may include an electric motor for rotating the propeller provided at the rear end to provide propulsion. In addition, the propelling means 11 may be provided with a structure in which water is prevented from flowing into the inside in order to be driven in a state of being submerged in water.

The propulsion means 11 is electrically connected to an electric capacitor 16 provided in the base portion 10 and is driven to rotate the propeller by receiving power from the electric capacitor 16, Thereby providing a driving force to the base portion 10. At this time, the driving means 11 may be controlled by a controller 60, which will be described later, such as power supply connection, rotation amount, and the like.

Here, the electric capacitor 16 may be disposed on the lower side of the base 10, and the power may be charged from an external power source through a charging terminal provided on one side of the base 10. In this case, the external power source is preferably understood as a concept including a device for supplying a commercial power source or a domestic power source. Accordingly, since the user can charge the electric storage device 16 without any additional installation work, the user can use the electric storage device 16 at the airstream. Of course, the electric condenser 16 may be detachably installed in the base unit 10, or may be detached from the base unit 10. In such a case, the user may include a plurality of electric condensers to be used as a standby power source It is possible.

On the other hand, the base portion 10 may be submerged in the lower portion side portion in a state floating on the water surface S by the buoyant body 32 described later. At this time, the buoyant bodies 32 may be provided on both sides of the upper portion of the base portion 10, respectively. Accordingly, the base unit 10 guides the flow of the fluid to the both sides of the base unit 10 through the streamlined outer surface on the front end side when the water is moved according to the driving of the propulsion unit 11, . Further, when the running water bike 100 starts to travel, the buoyant body 32 is separated from the water surface S, the resistance of the fluid due to the buoyant body 32 disappears and the speed can be improved, It is possible to move the water fast even in thrust. Here, it is preferable that the front side is understood as a direction that is propelled by the propelling means 11 and the rear side is a direction opposite to the front side.

The underwater wings 20 are formed of a material corresponding to the base 10 and are disposed symmetrically on both sides of the base 10. At this time, it is preferable that each of the underwater wing portions 20 is connected to both sides of the lower portion of the base portion 10, respectively. Here, the lower portion of the base portion 10 is preferably understood as a concept including the propelling means 11 mounted on the lower end portion of the base portion 10. That is, one end of the underwater wing 20 may be connected to the lower side of the base 10, and one end may be connected to the side of the propelling means 11. At this time, in this embodiment, one end of the water wing 20 is connected to the side of the propelling means 11 by way of example.

In detail, the submersible wing 20 includes a main wing 21 and an auxiliary wing 22. At this time, the main wing portions 21 are provided as a pair and are arranged to be opposed to each other on both sides of the lower portion of the base portion 10, and one end portion is connected to the lower portion of the base portion 10. Here, the main wing 21 may be formed in a streamlined profile with an outer profile to guide the flow of the fluid upward and downward while moving in the water, and to induce a lift (f) . As a result, the buoyant body (32) is separated from the water surface (S) during traveling to maintain the buoyant state, and the buoyant wave The frictional resistance is reduced, so that the energy efficiency of the propelling means 11 can be further improved.

At this time, it is preferable that the main wing portion 21 extends obliquely toward the other end. Here, the main wing portion 21 may extend obliquely toward one side of the front side and the rear side toward the other end. In this embodiment, the main wing portion 21 may have a shape extending obliquely toward the rear side toward the other end Are illustrated and described by way of example.

In detail, the main wing portion 21 may be inclined toward the rear side at an inclination angle corresponding to the first angle? 1 toward the other end with reference to one end portion overlapping with the lateral horizontal reference line h1. That is, the main wing portion 21 may have a shape corresponding to a substantially parallelogram. At this time, the first angle? 1 may be set at various angles based on the horizontal reference line h1.

Thereby, the main wing portion 21 can increase the lifting region L in which the lifting force f acts on the buoyancy body 32. [ Here, the lift distribution region L is preferably understood as a region where the lift force f acts so that the buoyant body 32 floats.

In other words, when the main wing portion 21 is extended from the one end portion to the other end portion so as to correspond to the horizontal reference line h1, the longitudinal length of the lift distribution region L is substantially equal to the length of the main wing portion 21, (C), that is, the length in the forward and backward directions. Here, when the main wing 21 extends obliquely toward the rear side toward the other end, the length in the fore and aft direction of the lift distribution region L is increased to increase the area where the lift f can be applied .

As a result, the rear end side of the buoyant body (32) can be prevented from being deeper than water in the deeper side than the front end side, and the area where the rear end side of the buoyant body (32) The resistance of the fluid can be reduced. Further, even if the weight center point is moved by the single or multiple persons on the foldable watercraft 100, the rear end side can be stably floated by the lift f, so that the stability of the water running can be further improved have.

The main wings 21 may be hinged to both sides of the lower portion of the base 10, that is, to both side portions of the propelling means 11, and may be provided in a folding manner. Here, the main wing 21 is provided in a folding type. The main wing 21 is mounted on the base portion 21c around the wing hinge shaft 21c, which is connected to the side of the propelling means 11, It is preferable to understand the concept of being able to be folded so as to be adjacent to the side of the base 10 or to be spread apart. Accordingly, if the main wing 21 is provided in a folded state, the entire volume of the foldable watercraft 100 can be reduced, and the portability and storage convenience of the user can be remarkably improved. In addition, the main wing 21 is rotated in the unfolded state while the other end is turned to the side, so that the lifting force f can be generated in the underside when the water is moved while being immersed in water. Here, the expanded state is preferably understood as a state in which each component is rotated to unfold the components to use the foldable watercraft 100. The folded state means that the entire volume of the foldable watercraft 100 is minimized It is desirable to understand that each component is rotated so as to be folded.

5 and 6B, a hinge rotation part 14 is provided at a lower part of the base part 10. [ In this embodiment, the hinge rotation part 14 is formed on the side of the propelling means 11 as an example.

In detail, the hinge rotation part 14 may be provided on the side of the propelling means 11, and a fixing groove 13 is formed on the side of the propelling means 11 for this purpose. At this time, the fixing groove 13 may be formed to be laterally opened on the side of the propelling means 11. The fixing groove 13 may be formed at any one side of the side of the propelling means 11, but may be formed horizontally laterally from the center of the propelling means 11. Thus, the main wing portion 21 can be fixed to the fixing groove portion 13 in a horizontal state.

The hinge rotation part 14 is provided so as to protrude from the entrance side edge of the fixing groove part 13. In detail, the hinge rotation part 14 may be extended so that one end thereof is fixed to the bottom of the fixing groove part 13 and the other end thereof protrudes from the entrance side edge of the fixing groove part 13. That is, the hinge rotation unit 14 may be a separate member and may be inserted and fixed in the fixing groove 13, or may be integrally connected to the propelling unit 11 as the case may be.

At this time, the hinge rotation part 14 may be formed with a hinge slot hole 14a along the longitudinal direction. That is, the hinge slot hole 14a may be formed to have a predetermined length so as to be directed inwardly from the inlet side of the fixing groove portion 13. The hinge rotation part 14 may be provided on both sides of the fixing groove 13 in the forward and backward directions and substantially parallel to the opening of the fixing groove 13 between the respective hinge rotation parts 14. [ .

On the other hand, an assembling protrusion 21b is provided at one end of the main wing 21. The main wing 21 may be formed at one end thereof with a fitting groove 21a having a width in the longitudinal direction corresponding to the fixing groove 13 and the fitting protrusion 21b may be formed in the fitting groove 21a As shown in Fig. Specifically, the assembling protrusion 21b may be extended so that one end of the assembling protrusion 21b is fixed to the bottom of the coupling groove 21a and the other end of the coupling protrusion 21b protrudes from the inlet side edge of the coupling groove 21a. That is, the assembling protrusion 21b may be a separate member and may be inserted and fixed in the coupling groove 21a, or may be integrally connected to the main wing 21 in some cases. The assembling protrusion 21b may be formed with a shaft insertion hole formed in a back and forth direction. At this time, the shaft insertion hole may be formed to correspond to the diameter of the vane hinge shaft 21c.

The assembling protrusion 21b may be disposed at a position corresponding to a central portion of the coupling groove 21a, that is, a position corresponding to an inlet side of the fixing groove 13 opened between the respective hinge rotation portions 14. [ The assembly projections 21b may be disposed between the respective hinge rotation parts 14 so as to have a width corresponding to the interval between the hinge rotation parts 14.

Here, the wing hinge shaft 21c may be provided on the assembling protrusion 21b, and the wing hinge shaft 21c may have a circular profile in cross-sectional profile. The wing hinge shaft 21c may be inserted through the respective hinge slot holes 14a and the shaft insertion holes so that the main wing 21 can be hingedly connected.

When the main wing 21 is laterally expanded, the assembling protrusion 21b may be disposed to face the fixing groove 13. When the main wing portion 21 is pushed in a direction adjacent to the side portion of the propelling means 11, the wing hinge shaft 21c is inserted into the fixing groove portion 13 along the rim of each of the hinge slot holes 14a. As shown in Fig. At this time, the assembling protrusion 21b is inserted into the fixing groove 13 corresponding to the sliding movement of the vane hinge shaft 21c, and the respective hinge rotation parts 14 can be inserted into the coupling groove 21a . As the assembly projections 21b and the respective hinge rotation parts 14 are inserted into the fixing groove 13 and the mating groove 21a, the rotation of the main wing 21 is restrained, The unfolded state can be maintained toward the lateral direction. Accordingly, the main wing 21 can be maintained in the unfolded state by only a simple rotation and pressing operation without the necessity of a separate member, and the main wing 21 is substantially connected to the base 10, .

It is preferable that the auxiliary wings 22 are provided as a pair and one end of each main wing 21 is hinged to the other end to be foldably installed. In detail, the auxiliary wing portion 22 may have an outer profile formed in a streamlined profile and may be rotated in the lateral direction around a hinge shaft (not shown) provided at the other end side of the main wing portion 21 have. At this time, the one end portion of the auxiliary wing portion 22 and the other end portion of the main wing portion 21 may be formed with mutually mating contact surfaces. Accordingly, when the auxiliary wing portion 22 is rotated to correspond to a predetermined angle, the respective engaging contact surfaces may be in contact with each other so that the rotation angle of the auxiliary wing portion 22 may be limited.

Here, the auxiliary wing portion 22 is disposed such that the other end portion thereof is turned to face upward in the unfolded state, and is substantially opposed to the base portion 10. That is, the auxiliary wings 22 are disposed to face the side of the base 10, and may be spaced apart from each other in correspondence to the lateral length of the main wings 21.

The other end of the auxiliary wing portion 22 is extended toward the upper side and is coupled to a wing fixing portion 31 described later. As a result, the auxiliary wing 22 prevents the vortex-like fluid flow generated at the other end of the main wing 21 from entering the center, The resistance can be reduced. Of course, the auxiliary wing portion 22 may be integrally extended from the other end portion of the main wing portion 21 in an upward direction. One end of the auxiliary wing portion 22 and the other end of the main wing portion 21 are formed in a shape corresponding to the hinge connection structure of the base portion 10 and the main wing portion 21 .

Here, the auxiliary wing portion 22 may be set to have a length equal to or less than the width of the main wing portion 21. Accordingly, the main wing portion 21 can be pivoted toward the side of the base portion 10 in a state where the auxiliary wing portion 22 is overlapped.

Preferably, the auxiliary wing portion 22 extends obliquely toward the front side toward the other end. Specifically, the auxiliary wing portion 22 may be inclined toward the front side at an inclination angle corresponding to the second angle? 2 toward the other end with respect to one end overlapping with the vertical reference line h2 in the up-down direction in the unfolded state have. That is, the auxiliary wing portion 22 may be formed in a shape substantially corresponding to a parallelogram.

At this time, it is preferable that the angle of inclination of the auxiliary wing portion 22 is set to an inclination angle corresponding to the mutual direction of the main wing portion 21. That is, the second angle? 2 may be set to an angle corresponding to the first angle? 1. Here, the auxiliary wing portion 22 is folded so that the face of the auxiliary wing portion 22 facing the base portion 10 overlaps the upper face portion of the main wing portion 21 in the folded state. At this time, since the auxiliary wing portion 22 is formed at an inclination angle corresponding to the main wing portion 21, a surface of the auxiliary wing portion 22 facing the base portion 10 can be superposed on the upper surface portion of the main wing portion 21 as a whole have. Accordingly, the auxiliary wing portion 22 can be folded so as to overlap with the main wing portion 21 so as to have an inclination angle corresponding to the inclination angle of the main wing portion 21, and can be miniaturized to a minimum volume in the folded state, It can be folded adjacent to the side so that the storage and portable convenience of the user can be further improved.

The buoyant support 30 includes the vane fixing part 31 and the buoyant body 32. In detail, the vane fixing part 31 is formed of a material corresponding to the base part 10, and may be provided on both sides of the upper part of the base part 10, respectively. At this time, the wing fixing part 31 may extend to correspond to the interval between the auxiliary wing part 22 and the base part 10. In addition, a foot plate may be detachably mounted on the upper portion of the vane fixing portion 31 to prevent slippage of the user.

 One end of the wing fixing part 31 is hingedly connected to the side of the base part 10 and is folded and folded and the other end is connected to the other end of the water wing part 20, In a detachable manner. The main wing portion 21 is supported by the wing fixing portion 31 between the auxiliary wing portion 22 and the base portion 10 so that the auxiliary wing portion 22 is restrained, The state can be stably maintained.

Referring to FIG. 6A, it is preferable that a multi-shaft pivot portion 33 is provided at one end of the blade fixing portion 31. Here, the multiaxial rotation unit 33 may be a separate member and hinged to one end of the vane fixing unit 31. The upper and lower hinge shafts 33a are provided on one side of the one end and the other end of the multiaxial turning unit 33 and the front and rear hinge shafts 33b are provided on the other side. In this embodiment, the upper and lower hinge shafts 33a are provided at one end of the multidirectional rotary part 33 and the front and rear hinge shafts 33b are provided at the other end.

Specifically, one end of the multiaxial turning portion 33 may be provided with a first insertion groove which is laterally opened at the center side. Through this, the first insertion groove can be inserted with a fixed hinge portion 15 extending laterally from the side portion of the base portion 10. Here, the fixed hinge portions 15 may be formed on the side of the front end portion of the base portion 10 at positions that do not overlap each other in the folded state of the water wing portion 20, A through hole may be formed.

In addition, the one end of the multiaxial turning portion 33 may be divided by the first insertion groove, and a first hinge insert (not shown) may be formed at each of the divided end portions so as to communicate with the first insertion groove, Holes may be respectively formed. When the fixed hinge portion 15 is inserted into the first insertion groove such that the first through-hole and the first hinge insertion holes correspond to each other, the upper and lower hinge shafts 33a are inserted into the first hinge insertion holes And each first hinge insertion hole. Accordingly, the multiaxial turning unit 33 can be pivoted up and down about the upper and lower hinge shafts 33a.

A second insertion groove may be formed at the other end of the multiaxial turning portion 33 so as to open in the longitudinal direction. At this time, a second hinge through hole may be formed at one end of the vane fixing part 31 in a vertical direction, and one end of the vane fixing part 31 may be inserted into the second insertion groove. In addition, a second hinge insertion hole may be formed at each end portion divided by the second insertion groove, the second hinge insertion hole formed to pass through in the vertical direction. The front and rear hinge shafts 33b may be inserted into the second hinge insertion holes and the second hinge insertion holes with one end of the blade fixing part 31 inserted into the second insertion groove. Therefore, the vane fixing portion 31 is not only rotated about the front-rear hinge axis 33b in the front-rear direction but also vertically about the upper and lower hinge axis 33a, .

At this time, when the other end portion of the vane fixing portion 31 is coupled to the auxiliary vane portion 22, the rotation is preferably restrained and fixed. In detail, a coupling protrusion 31a may protrude from the other end of the vane fixing part 31. [ The coupling protrusion 31a may be inserted into the fitting hole 22a formed at one side of the other end of the auxiliary wing portion 22 and may be fastened to a separate fixing member 31b. At this time, the coupling protrusions 31a are extended to have a length equal to or longer than the thickness of the vane fixing portion 31, and a screw thread may be formed on the outer surface. In the fixing member 31b, a screw hole So that the vane fixing part 31 can be fixed. Accordingly, even if one end portion of the blade fixing portion 31 is rotated by the multi-shaft rotation portion 33 by the multi-shaft rotation portion 33, when the underwater blade portion 20 is fixed in the opened state for traveling, 22 so that the parallel movement of the buoyant body 32 with the underwater wing 20 can be maintained even after the buoyant body 32 is separated from the water surface S,

Of course, the coupling protrusions 31a and the fixing members 31b may be coupled with each other by interference fit, and the auxiliary vanes 22 and the vane fixing portions 31 may be detachably fixed to each other It may be provided in various shapes.

The wing fixing part 31 is rotated in the vertical direction about the upper and lower hinge shafts 33a in the extended state of the water wing part 20 and the other end is coupled to the auxiliary wing part 22 . The wing fixing part 31 is rotated toward the front side so as to correspond to the inclination angle of the main wing 21 and the auxiliary wing 22 about the front and rear hinge shafts 33b, The interference with the wing portion 20 can be prevented. Accordingly, since the wing fixing part 31 is prevented from being in contact with the underwater wing part 20 in the folded state, the wear and breakage due to the interference is minimized and the durability is further improved, And is disposed in a folded state on the side of the base portion 10, so that the volume can be further miniaturized.

1 to 6B, the buoyant body 32 may be detachably attached to the vane fixing part 31. [ At this time, it is preferable that the buoyant body (32) is provided with an inflatable structure which is selectively volumetric as the gas is filled. In detail, the buoyant body 32 may be formed of a flexible material such as rubber, synthetic rubber, polyether, reinforced polyvinyl or the like so that a filling space is formed therein and its volume is selectively controlled. Further, the buoyant body 32 may be formed to have a width corresponding to the length of the vane fixing portion 31, and the front end portion and the rear end portion may be formed as a rounded outer surface profile, have.

Here, the buoyant body 32 may be spaced apart from the upper side of the main wing 21. The lower surface of the buoyant body 32 is positioned on the side surface of the base portion 10 and the inner surface of the auxiliary wing portion 22 facing the base portion 10 and the upper surface of the main wing portion 21 A water flow space for generating lift can be formed inside.

At this time, it is preferable that the buoyant body 32 has a predetermined thickness and is set to have a shallow draft as much as possible. Accordingly, when the lifting force f is generated from the main wing 21, it can be removed from the water surface S more quickly.

The buoyant body 32 may be connected to air injecting means (not shown) inserted into the base 10 to selectively inject or discharge the air. Here, the air injecting means (not shown) may be provided with an air pump or the like capable of sucking or discharging the outside air. The air injecting means (not shown) may be driven by power from the electric capacitor 16 under the control of the controller 60 and may be selectively driven to inject or discharge air into the buoyant body 32 can do.

Also, as shown in FIG. 1, the buoyant body 32 may be inflated so as to have a predetermined length toward the front side and the rear side when air is injected, and the buoyant body 32 may be provided to allow the user to ride on the upper side. One side of the buoyant body 32 may be detachably coupled to the vane fixing part 31 by a separate coupling member, and may be attached by a method such as adhesion. In this case, when the buoyant body 32 is attached to the vane fixing part 31, the user discharges the gas filled in the filling space, and then the buoyant body 32 is fixed to the lower surface of the vane fixing part 31 Folded or curled. As a result, the buoyancy body 32 is selectively adjusted in its volume to improve the transportation, carrying and storage of the product, and the air is automatically filled only by the operation of the controller 60, . The foldable watercraft 100 may be configured such that the wing fixing portion 31 is coupled to the water wing portion 20 so that the float 32 is disposed on the upper side after the water wing portion 20 is substantially opened. The assembling is completed, so that a separate device or space for separating the water wing portion 20 from the ground is not needed, so that the assembling property can be further improved.

1 to 5A, the base unit 10 may further include a seat support unit 40 and a controller support unit 50. One end of the seat supporting portion 40 is hingedly connected to the rear of the upper end of the base portion 10 and may include a supporting extension portion 41 and a seat portion 42.

In detail, one end of the support extension part 41 may be hingedly connected to the rear of the upper end of the base part 10 by a seat hinge shaft 41a provided at one side in a vertical direction. Here, the support extension part 41 is rotated upward, and one end of the support extension part 41 may be seated at the upper end of the base part 10 in the extended state. In addition, a fitting groove 41b, which is laterally opened, may be formed at the other end of the support extension 41.

A seat fixing protrusion 12 is provided at an upper end of the base portion 10. At this time, the seat fixing protrusion 12 may be hinged so that one end portion thereof is laterally rotated by the projection hinge shaft 12a. At this time, the seat fixing protrusion 12 is located at a position where one end of the support extension part 41 is seated on the upper end of the base part 10 and the other end is slidably inserted in the fitting groove 41b in the lateral direction As shown in FIG. The projection hinge shaft 12a may be provided on the front side of the upper end of the base unit 10 so as to extend from the seat hinge shaft 41a to the width of the support extension unit 41 in the forward and backward directions. Further, the seat fixing protrusion 12 may be extended to a length that can be laterally inserted into the fitting groove 41b. The inner surface profile of the fitting groove 41b may correspond to the profile of the outer surface of the other end of the fixing protrusion 12, .

In this way, the seat support portion 40 can be easily used, because the rotation of the seat support portion 40 is locked in a state where the seat fixing protrusion 12 is inserted into the fitting groove 41b without a separate member. In addition, since the seat fixing protrusion 12 and the seat supporting portion 40 are connected to the base 10, there is no fear of losing each of the components, and storage and management can be facilitated.

A seat portion 42 is provided at the other end of the support extension portion 41, and the seat portion 42 may be divided into a pair of forward and backward directions. An extended hinge portion 42c capable of pivoting in the up and down direction may be provided between each of the seat portions 42a and 42b and mutual opposite ends of the seat portions 42a and 42b may be formed in the extended hinge portion 42c . The extension hinge portion 42c is extended to a predetermined length from a hinge shaft to which mutually opposite end portions of the seat portions 42a and 42b are connected and is fixed to the other end portion of the support extension portion 41 .

The respective seat portions 42a and 42b may be hinged to front and rear sides so as to be spaced apart from each other about the hinge axis of the extended hinge portion 42c. When they are mutually brought into contact with each other and restricted in rotation, they can be spread horizontally toward the front and rear sides in a state of close contact. Accordingly, not only the user can sit on the upper portion of the seat portion 42 but also the respective seat portions 42a and 42b are in close contact with each other and the length is substantially extended in the forward and backward directions. Do. The seat portions 42a and 42b may be folded so that the seat portions 42a and 42b are rotated in a direction facing each other and overlapped.

The seat supporting portion 40 is rotated in the vertical direction about the seat hinge shaft 41a so that the seat supporting portions 40 are folded in the direction in which the seat portions 42a and 42b face each other in the folded state, 10, the volume can be minimized in a state of being connected to the base unit 10 without interfering with the underwater wing unit 20.

On the other hand, the support extension part 41 may be inclined toward the front side at an inclination angle corresponding to the third angle? 3 toward one end with respect to the other end overlapping with the vertical reference line h2 in the vertical direction in the extended state have. At this time, the support extension part 41 may be formed in a shape substantially corresponding to a parallelogram. Here, the third angle? 3 may be set to an inclination angle corresponding to the second angle? 2. Accordingly, since the seat portion 42 is disposed at the center portion of the buoyant body 32, a stable floating state can be maintained even when the user is seated and stopped. At this time, the user may be positioned on the upper side of the lift distribution area L when the seat 42 is seated. Accordingly, the center of gravity of the load can be shifted due to the change of the posture of the user, and the lift angle of the main wing portion 21 is increased so that the lift force f is greatly increased, (S). Further, since the buoyant body 32 is floated by the lift f so that the resistance force acting from the underwater wing 20 is reduced, the user can use the force of the waist or the lower body or adjust the posture, The driving direction of the means 11 can be easily changed. In addition, the user can change the front angle of the base portion 10 and the auxiliary wing portion 22 so that the user can change the left and right direction without moving up and down.

In addition, the base portion 10 may extend obliquely toward the front side at an inclination angle corresponding to the third angle? 3 from the upper end toward the lower end. Accordingly, the rear end portion of the base portion 10 can be formed at an inclination angle corresponding to the opposite end portions of the support extension portion 41 in the folded state, so that the volume can be further minimized.

One end of the controller support portion 50 may be hinged to a side of the front end of the base portion 10 by a controller hinge shaft 51 which can be rotated in the up and down direction. Of course, the one end of the controller support portion 50 and the other end of the front end portion of the base portion 10 may have a shape corresponding to the hinge connection structure of the base portion 10 and the main wing portion 21, As shown in FIG.

Here, the controller 60 may be detachably attached to the other end of the controller support unit 50. At this time, the controller 60 may be connected to the connection terminal provided at the other end of the controller supporter 50 and connected to the propelling means 11 and the air injecting means (not shown) by wire. The connection terminal may be electrically connected to the propulsion unit 11 and the air injection unit (not shown) inside the base unit 10 through the inside of the controller support unit 50. Further, the controller 60 may be connected to drive the propulsion unit 11 and the air injection unit (not shown).

As described above, since the main wing portion 21, the auxiliary wing portion 22, the seat support portion 40, and the controller support portion 50 are both folded in the folding type, Since it can be miniaturized to a minimum volume, storage and portable convenience can be remarkably improved.

Here, the terms "comprises", "comprising", "having", or "having" as used in the above description mean that the constituent element can be included unless otherwise stated. It is to be understood that the invention is not limited to the components but may include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And these modifications fall within the scope of the present invention.

10: base part 11: propelling means
20: underwater wing 21: main wing
22: auxiliary wing 30: buoyant support
31: wing fixing part 32:
40: seat support part 50:
100: folding water bike

Claims (5)

A base unit having an electric capacitor internally connected to the propulsion unit to supply electric power to the propulsion unit, the propulsion unit including an electric motor,
A main wing portion which is arranged to be symmetrical to both sides of the base portion and which is pivotally connected to both sides of the lower portion of the base portion so as to be hinged to each other, And an auxiliary wing portion that is hingedly connected to the other end portion of the main wing portion and is folded and folded so that the other end portion of the auxiliary wing portion is rotated in an unfolded state toward the upper side; And
And an expansion type structural body provided on both sides of the upper portion of the base portion and detachably connected to the vane fixing portion connected to support between the auxiliary vane portion and the base portion and being selectively bulky as the gas is filled, And a buoyancy support body having a buoyancy member spaced apart from the upper side of the main wing portion. The method according to claim 1,
Wherein the main wing portion extends obliquely toward the other end so that the lift force distribution region of the buoyancy support body is increased,
Wherein the auxiliary wing portion is set to have an inclination angle corresponding to mutually overlap with the main wing portion in a folded state when the auxiliary wing portion is inclined toward the other end portion. The method according to claim 1,
Wherein the base includes a hinge rotation part protruding from an entrance side edge of a laterally opened fixing groove part and having a hinge slot hole formed along a longitudinal direction thereof,
Wherein one end of the main wing portion is provided with an assembly protrusion selectively inserted into the fixing groove portion corresponding to the rotation of the hinge,
Wherein the assembling protrusion is provided with a wing hinge shaft which is hingedly connected to the hinge rotation part through the hinge slot hole and slidable along the hinge slot when the hinge insertion part is inserted into the fixing groove part. The method according to claim 1,
One end of the vane fixing part is hinge-connected to the side of the base part so as to be folded and folded, and the other end is detachably coupled to the other end of the auxiliary vane part,
Wherein the wing fixing part is fixed by rotation when the other end is coupled to the auxiliary wing part. The method according to claim 1,
Wherein the one end portion of the wing fixing portion is provided with a multi-shaft rotation portion that is rotated in the up-and-down direction and the back-and-forth direction.

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