KR102095292B1 - Electric surfboard - Google Patents

Abstract

The present invention relates to an electric surfboard, and more specifically, to check whether or not the user deviates during driving of the surfboard, stops the driving of the surfboard, and also generates heat from the control unit and the motor unit that generate a lot of heat from the surfboard. It relates to an electric surfboard with improved structure that can be naturally cooled. To this end, a board housing, a pair of foot fixing parts respectively fixed to the front and rear of the upper surface of the board housing, a removable battery pack part mounted in the space between the foot fixing parts from the upper surface to the lower surface of the board housing, and a lower part of the battery pack part In the space between the surface and the lower surface of the board housing, the lower surface of the board housing is fixed to each other and is naturally cooled by water flowing through the rear surface when driving the motor of the board. It is driven and is fixed to one side of the control room and is arranged on the lower surface of the board. It includes a water jet part that is connected in series together, the battery pack part no board of the board according to the serial arrangement of the motor part and the one jet part The motorized surfboard, characterized in that disposed in the central region form a center is provided.

Description

Electric surfboard

The present invention relates to an electric surfboard, and more specifically, to check whether or not the user deviates during driving of the surfboard, stops the driving of the surfboard, and also generates heat from the control unit and the motor unit that generate a lot of heat from the surfboard. It relates to an electric surfboard with improved structure that can be naturally cooled.

The surfboard driven by the motor has a problem in that the motor continues to be driven without stopping when the user rides the surfboard and loses its center on the surfboard and falls over. In order to solve this problem, prior art 10-1758290 controls the speed of the motor by the handle. However, the handle portion for controlling the surfboard may not be provided on the surfboard as necessary, and thus, in consideration of such a situation, it is necessary to invent the user to detect this when the user leaves the surfboard and stop driving.

In addition, in general, a surfboard driven by a motor generates the most heat in a control unit and a motor unit for driving the surfboard. In order to cool the generated heat, in the prior document 10-1758290, the motor is cooled by cooling water. When the motor is cooled by circulating the coolant, additional parts are required, the structure is also complicated, and there are problems in that repair elements are increased.

Republic of Korea Registered Patent Publication No. 10-1753612 (Name of invention: smart binding and detachable device for snowboarding) Republic of Korea Registered Patent Publication No. 10-1819497 (Name of the invention: a driving device for a skateboard equipped with a detachable footrest that can be controlled by a portable smart device) Republic of Korea Registered Patent Publication No. 10-1758290 (Invention name: a module type surfboard promoted by a water jet) Japanese Patent Application Publication No. 9-76990 Japanese Patent Application Publication No. 10-314365 United States Patent Publication No. US 2010/0059969

Therefore, the present invention was created to solve the problems as described above, and detects whether the user has left the surfboard to stop driving the motor and also cools the heat generated by the motor unit and the controller with natural cooling. The object is to provide an invention.

However, the objects of the present invention are not limited to those mentioned above, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

The object of the present invention described above is, a board housing, a pair of foot fixing parts respectively fixed to the front and rear of the upper surface of the board housing, and a removable battery mounted in a space between the foot fixing parts from the upper surface of the board housing to the lower surface. In the space between the lower surface of the pack unit and the battery pack unit and the lower surface of the board housing, the lower surface of the board housing is fixed to each other so that when the motor of the board is driven, it is naturally cooled by the water flowing on the back surface and controls the driving of the motor. It is driven according to the driving of the control room part, and is fixed to one side of the control room part and disposed on the lower surface of the board. It includes a water jet portion that is connected in series with the motor portion to generate a, the battery pack portion is in series arrangement of the motor portion and the one-jet portion Constituting the center of gravity of the board la may be accomplished by providing a surfboard, characterized in that disposed in the central region.

In addition, a pair of connector portions are disposed and connected to each other on the lower surface of the battery pack portion and the upper surface of the control room portion to thereby supply power to the battery pack portion to the control room portion.

In addition, the upper surface of the control room portion, the first partition wall protruding upward in the upper direction on one side of the control room portion, the second partition wall, the first partition wall and the second partition wall formed inside the first partition wall while protruding in the upward direction A waterproof groove formed in the space therebetween and a connector insertion groove into which the control room connector is inserted are formed by being formed inside the second partition wall,

On the lower surface of the battery pack portion, a seating groove, a base portion provided in the seating groove, and a projection portion provided in the base portion are formed to form a shape corresponding to the first and second partition walls, and are fixed by fitting in the circumferential direction of the projection portion, thereby waterproofing the projection portion It further includes a waterproof sealing portion that is inserted into the groove, the control room connector portion is formed protruding in the upward direction, the first and second guides formed at a predetermined distance from each other, the power supply terminal portion provided between the first and second guides, and the first, 2 is provided between the guide, and includes a control terminal for transmitting a control signal transmitted from the control room,

The battery connector part includes a first and second guide groove part into which the first and second guides are inserted, a power connection terminal insertion groove into which the power connection terminal part is inserted, and a control terminal insertion groove into which the control terminal part is inserted and connected.

On the other hand, the object of the present invention is a board housing, a band portion worn by a user, a magnetic field is formed and fixedly attached to the housing by a magnetic force, and physically connected to the band portion to detach the user from the housing when the user leaves the board. It can be achieved by providing a surf board for detecting the departure of the user, characterized in that it comprises a control unit for generating a stop signal to stop the board receiving the departure detection unit, and the departure detection signal generated by the departure detection unit to detect. have.

In addition, the detachment detecting part is fixed to the detachable part provided with a magnetic, the upper surface of the board, the detachable part is fixed to the holder part that is seated on the upper surface by magnetic force, and the detachable part is fixedly attached by interacting with the magnetic part. It includes a metal portion, a sensor portion disposed on the lower surface of the holder portion to recognize the magnetic field by generating a detachment detection signal by detachable portion from the holder portion when the user leaves the board.

In addition, the removable battery pack unit mounted in the direction from the upper surface to the lower surface of the board housing is fixed to the holder so as to communicate with the internal space of the battery pack unit, thereby discharging the battery heat generated by the battery pack unit to the outside and allowing air to circulate. It further includes a circulatory section,

The air circulation portion is a head portion provided inside the fiber portion to be circulated in the air, a length extending from the head portion, a pillar portion fixed by a screw thread to the holder portion, a guide portion formed on the lower surface of the head portion, and a circumferential direction on the lower surface of the guide portion It is provided with a waterproof ring that prevents water from permeating when fixed to the holder.

According to the present invention as described above, it is possible to stop the driving of the motor by detecting whether the user has left the surf board, and also to cool the heat generated from the motor unit and the control unit by natural cooling.

The following drawings attached to the present specification illustrate a preferred embodiment of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention. It should not be construed limitedly.
1 is a perspective view of a surfboard according to a first embodiment of the present invention,
2 is a view showing a cross-section of a surf board according to a first embodiment of the present invention,
3 and 4 is a view showing a battery connector connection according to the first embodiment of the present invention,
5 and 6 is a view showing a control room connector connection according to the first embodiment of the present invention,
7 and 8 are cross-sectional views showing a batter connector connection portion and a control room connector connection portion according to the first embodiment of the present invention,
9 is an exploded view of a surfboard according to a first embodiment of the present invention,
10 is a view of the surfboard according to the first embodiment of the present invention to advance on the water,
11 is a perspective view of a surfboard including a departure detection unit that detects a user's departure according to a second embodiment of the present invention,
12 is a cross-sectional view of the departure detection unit according to the second embodiment of the present invention,
13 and 14 is an exploded view of the departure detection unit according to the second embodiment of the present invention,
15 is a perspective view of an air circulation unit according to a second embodiment of the present invention,
16 is a cross-sectional view of an air circulation unit according to a second embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. In addition, the embodiment described below does not unduly limit the contents of the present invention as set forth in the claims, and the entire configuration described in this embodiment cannot be said to be essential as a solution to the present invention. In addition, descriptions that are apparent to those skilled in the art and those skilled in the art may be omitted, and descriptions of the omitted components (methods) and functions may be sufficiently referenced without departing from the spirit of the present invention.

(First Example)

In the electric surfboard 10 according to the first embodiment of the present invention, the control room part and the motor part are arranged on the bottom surface of the board housing to be cooled by water flowing on the back surface of the surfboard, and the connector between the battery pack part and the control room part is connected. It is a device that newly invented the structure. As shown in FIG. 1, the surfboard 10 is provided with foot fixing portions 11a and 11b, respectively, at the front and rear of the upper surface of the housing 10 of the surfboard. Therefore, the user of the surfboard can drive the surfboard in a desired direction by inserting the feet into the foot fixing portions 11a and 11b, respectively. The foot fixing parts 11a and 11b may be provided diagonally or in straight lines, respectively, on the front and rear of the upper surface of the surfboard 10. In the vicinity of the rear foot fixing portion 11b, an ankle band 12 worn on the user's ankle is fixedly extended to the housing 10. Since the surfboard 10 according to the present invention moves by power, when the user rides the surfboard from the sea and then leaves the surfboard 10, the ankle band 12 and the magnetic senses connected to each other are interlocked with the motor By stopping the supply of power supplied to the surfboard 10 is automatically stopped.

The battery pack unit 100 according to the first embodiment of the present invention is inserted and seated in the battery insertion groove 13 formed in the housing 10 as shown in FIG. 2, and the lower surface from the upper surface of the housing 10 It is equipped with and can be conveniently attached and detached. The battery pack part 100 is disposed in a space between the foot fixing parts 11a and 11b, which are approximately the central area of the housing 10, to hold the entire center of gravity of the surfboard 10. On the lower surface of the battery pack unit 100 and the bottom surface of the housing, an insertion space in which the control room unit 200 to be described later can be inserted is provided. The battery pack unit 100 supplies power to the surfboard by packaging and packing a plurality of cells 110. As shown in FIG. 2, when the battery pack unit 100 is inserted into the battery insertion groove 13, the control room unit is supplied to supply power to the control room unit 200 and receive data transmitted from the control room unit 200. 200) and a connector. Hereinafter, a method of interconnecting the battery pack unit 100 and the control room unit 200 will be described.

As illustrated in FIG. 3, a battery connector connection portion is disposed at a central region of one end of the rear portion 120 of the battery pack portion 100. The battery connector connection portion is roughly composed of a seating groove 121, a base portion 122, a protruding portion 123, a connector insertion groove 124, a waterproof sealing portion 125, and a battery connector portion 140. The seating groove 121 is formed in consideration of the depth at which the protrusion 123 can be inserted into the waterproof groove 215 as shown in FIG. 8. The seating groove 121 is formed with a base portion 122 and a protrusion 123 protruding upward from the base portion 122 with a predetermined thickness. The protrusion 123 is formed such that the connector insertion groove 124 is formed inside so that the battery connector 140 is inserted. The protrusion 123 has a circular or elliptical shape, and is provided with a waterproof sealing portion 125 in the outer circumferential direction to prevent water from entering the outside. The waterproof sealing portion 125 is fixed to the outer circumferential direction of the protruding portion 123 while being seated on the upper surface of the base portion 122. The waterproof sealing portion 125 includes first, second, and third sealing protrusions 125a, 125b, and 125c formed to protrude more than adjacent circumferential surfaces in the circumferential direction as illustrated in FIG. 8. The first, second, and third sealing protrusions 125a, 125b, and 125c are spaced apart from each other by a predetermined distance. The first, second, and third sealing protrusions 125a, 125b, and 125c are in close contact with the inner surface of the first partition wall 212 when they are inserted into the waterproof groove 215, so that water does not penetrate into the inner side. Preferably, the vertical protrusion width of the second sealing protrusion 125b formed in the middle of the first and third sealing protrusions 125a and 125c is the largest. Thus, by forming the thickness of the circumferential direction of the waterproof sealing portion 125 so as to protrude at a distance from each other in the vertical direction, there is an advantage that it can be easily detached while achieving a waterproof function.

The battery connector 140 is inserted into the connector insertion groove 124 as shown in FIG. 4. As illustrated in FIG. 3, the battery connector 140 is provided with first and second guide grooves 141a and 141b on both sides, and a power connection terminal is inserted into a space between the first and second guide grooves 141a and 141b. A groove 142 is formed, and a control terminal insertion groove 143 is formed.

The control room part 200 according to the first embodiment of the present invention is disposed in a space formed between the battery pack part 100 and the bottom surface of the housing 10 as shown in FIGS. 1 and 2. Therefore, the control room unit 200 is disposed vertically below the battery pack unit 100. Since the battery pack unit 100 is disposed and coupled to the bottom surface of the housing 10, there is an advantage that it can be naturally cooled by water, as shown in FIG. The control room unit 200 controls driving of the motor. As an example, the surfboard 10 drives the motor to advance while generating a predetermined output according to the user's control, and when the user deviates from the surfboard 10, detects departure and stops driving the surfboard accordingly. .

As shown in FIG. 2, the battery pack unit 100 is mounted to be connected to and connected to the control room unit 200 so as to transfer data and power supply when the battery pack unit 100 is inserted into the partitioned battery insertion groove 13. 5 and 9, the control room part 200 is composed of a control room cover 210, a control circuit part 220, and a room housing 230. The control circuit unit 220 is inserted and fixed to the room housing 230. At one end of the upper surface 211 of the control room cover 210, the first and second partition walls 212 and 213, the connector insertion groove 214, the waterproof groove 215, and the control room connector portion 240 are connected to the control room connector. Each is formed in a batch. The control room connector connection is formed in a vertical downward position corresponding to the battery connector connection. The first and second partition walls 212 and 213 are spaced apart from each other by a predetermined distance, and thus formed in an upward direction, thereby forming a waterproof groove 215. The shape of the first and second partition walls 212 and 213 is preferably formed in the same manner as the shape of the protrusion 123 and the waterproof sealing portion 125 described above. Accordingly, when the battery pack unit 100 and the control room unit 200 are connected to each other, the protrusion 123 and the waterproof sealing unit 125 are inserted into the waterproof groove 215 to provide a waterproof function to prevent water from permeating into the interior. Perform. The first partition wall 212 has a larger diameter than the second partition wall 213. As the connector insertion groove 214 is formed inside the second partition wall 213, the control room connector 240 is inserted and fixed inward as illustrated in FIG. 6.

The control room connector part 240 is formed to protrude in the upper direction, and the power supply provided in the space between the first and second guides 241a and 241b and the first and second guides 241a and 241b provided at a predetermined distance from both sides It includes a terminal portion 242 and a control terminal portion 243. The first and second guides 241a and 241b are inserted and connected to the first and second guide grooves 141a and 141b when the control room connector connection portion and the battery connector connection portion are connected to each other, and guide the mutual connection and firmly connect the connector when connecting. Support. The power connection terminal portion 242 is inserted into the power connection terminal insertion groove portion 142 when the control room connector connection portion and the battery connector connection portion are connected to each other, thereby supplying power from the battery pack portion 100 to the control room portion 200. The control terminal part 243 is inserted into the control terminal insertion groove 143 when the control room connector connection part and the battery connector connection part are connected to each other, so that the control signal generated by the control circuit part 220 is controlled by the battery management system of the battery pack part 100 (BMS) or, conversely, a signal generated by the BMS is transmitted to the control circuit unit 220. 7 and 8, the control room connector connection portion and the battery connector connection portion are connected to each other to exchange power or data with each other.

2 and 9, the motor unit 300 is directly connected to one end of the room housing 230. In addition, the water jet unit (400,500,600) is also arranged in series with the motor unit 300. The room housing 230 and the motor unit 300 are fixed to the bottom of the bottom of the surfboard and are directly connected to each other, so that there is an advantage that it can be naturally cooled by water flowing through the rear surface. That is, as shown in FIG. 10, when the surfboard 10 is operated, the rear surface of the room housing 230 and the motor unit 300 is submerged in water, and when the surfboard 10 is advanced, water The room housing 230 and the motor unit 300 may be naturally cooled by water flowing through the rear surface.

The motor unit 300 is roughly composed of a motor 310 that rotates under the control of the control circuit unit 220 and a motor housing 320 that performs a waterproof function while enclosing the motor 310 and a motor rear cover 330. You can. The water jet unit is a jet tunnel unit 400 that injects the inhaled water rearward, an impeller 410 and a shaft 420 rotating by rotation of the motor 310, and a guide vane unit 500 that guides the jetted water And a jet nozzle unit 600.

The battery pack unit 100 and the control room unit 200 are sequentially arranged in a substantially central area of the housing 10 of the surfboard. The control room unit 200 is disposed vertically below the battery pack unit 100. In addition, in one horizontal direction (the right direction based on FIG. 2) of the control room unit 200, the motor unit 300 and the water jet units 400, 500, and 600 are directly connected, respectively. For the center of gravity of the surfboard, the first foot fixing portion 11a is disposed in front of the battery pack portion 100, and the second foot fixing portion 11b is disposed behind the battery pack portion 100. It is preferable for the center of gravity that the second foot fixing part 11b is provided in the upper regions of the motor part 300 and the water jet part 400,500,600.

(Second example)

The surfboard 10 for detecting a user's departure according to the second embodiment of the present invention automatically stops the surfboard when the user leaves the surfboard (for example, when the user rides the surfboard and falls into the water) It is an invention that allows the user to easily retrieve the surf board.

The departure detection unit 700 according to the second embodiment of the present invention is disposed on the upper surface of the housing 10 as shown in FIG. 11, preferably disposed on the upper surface of the battery pack unit 100 in the battery pack unit It is good to discharge the generated heat to the outside and to allow air circulation. The detachment detection unit 700 includes a detachable unit 710, a holder unit 720, a metal unit 730, and a magnetic switch sensor unit 740.

The detachable portion 710 includes a magnetic cap portion 711, first and second fixing holes 711a and 711b, a magnetic 712, and a magnetic film portion 713. 12 to 14, the magnetic cap portion 711 is provided with a receiving groove 711c for accommodating the magnetic 712 inward and a seating groove 711d in which the magnetic film portion 713 is seated. Therefore, the magnetic cap 711 is accommodated inside the magnetic cap portion 711, and the magnetic film portion 713 (magnetic cover portion) prevents the external exposure of the magnetic 712 and covers the magnetic 712 so as to support the lower surface. It is inserted and seated under the magnetic cap portion 711. The magnetic 712 of the detachable portion 710 forms a magnetic field around it, and a magnetic force acts on the metal portion 730, which will be described later, and is fixedly attached to the holder portion 720. The first and second fixing holes 711a and 711b are formed at regular intervals on the upper surface of the magnetic cap part 711. The ankle band 12 and the detachable portion 710 worn by the user are tied to each other by a connecting cable 14 as shown in FIG. 11. At this time, the connection cable 14 is connected to the ankle band 12 through the first and second fixing holes 711a and 711b. Therefore, when the user boards the surfboard and enjoys surfing and falls into the water inadvertently, the detachable portion 710 and the ankle band 12 are tied to each other, so that the detachable portion 710 deviates from the force of the magnetic force and the holder portion 720 It is detached from. When the detachable portion 710 is attached to the holder portion 720, a magnetic field is formed around the magnetic 712, and accordingly, the control unit (not shown) detects that the user is riding, and the detachable portion 710 is the holder portion When detached from 720, since the magnetic field is not formed around, the controller detects that the user has deviated from the surfboard. That is, the control unit generates a departure detection signal according to whether a magnetic field is formed around the departure detection unit 700.

The holder part 720 has a seating groove 721 on which the detachable part 710 is seated on the upper surface, and a threaded groove part (so that the air circulation part 750 described later is screwed next to the seating groove 721) 722) is formed through. The lower surface of the holder portion 720 is formed with a seating groove 723 in which the metal portion 730 is seated at a position corresponding to each other. When the metal part 730 is seated in the seating groove 723 of the lower surface of the holder part and the detachable part 710 is seated in the seating groove 721 of the upper surface of the holder part, the detachable part 710 is attached to the holder part by magnetic force. 720). The holder part 720 is formed on the upper surface of the battery pack part 100.

The metal part 730 is seated on the seating groove 723 of the holder part using a metal material such as iron so that the magnetic part 712 and the magnetic force act on the detachable part. The magnetic section 712 and the metal section 730 are formed in a circular or elliptical cross section. A magnetic switch sensor unit 740 is provided in the vicinity of the metal unit 730 to sense a magnetic field. That is, the sensor unit 740 is provided with a sensor that detects a magnetic field and a control unit that receives a signal from the sensor and generates a departure detection signal. The sensor unit 740 is preferably disposed near the lower portion of the metal unit 730 to recognize the magnetic field. If the sensor unit 740 is incorrectly disposed, even when the detachable unit 710 is fixedly attached to the holder unit 720, an error signal indicating the detachment may be generated. The sensor unit 740 is preferably disposed in the lower region of the metal portion so that the metal portion 730 partially overlaps the arrangement region. The control unit receives a signal from a sensor detecting the detachment of the detachable unit 710, generates a departure detection signal, and generates a stop operation signal to stop driving the motor based on the departure detection signal and transmits it to the control room 200 do. The control room unit 200 stops the driving of the motor according to the stop driving signal, thereby stopping the surfboard when the user leaves the surfboard 10.

The air circulation portion 750 is screwed to the threaded groove portion 722 of the holder portion. 15 and 16, the air circulation portion 750 includes a head portion 751 and a pillar portion 752 extending from the head portion. Threads are formed in the outer circumferential direction of the columnar portion 752 to be screwed to the threaded groove portion 722. The head portion 751 protrudes to the outside so that air circulation occurs when the pillar portion 752 is screwed to the holder portion 720. Nasan acid is formed on the outside of the pillar portion 752, and the inside is made of hollow. Even if the pillar portion 752 is inserted into the holder portion 720 as it is made of hollow, it may communicate with the inside of the battery pack portion 100 so that the heat of the battery pack portion 100 flows into the inside of the pillar portion 752. You can. The head portion 751 has a larger diameter than the pillar portion 752. The inside of the head portion 751 is provided with a fiber portion 753 that is smaller than the outer diameter of the head portion 751 and larger than the inner diameter of the pillar portion 752. The fiber portion 753 communicates with the inside of the pillar portion 752 so that heat generated in the battery pack portion 100 is discharged to the outside through the pillar portion 752 and the fiber portion 753, and air circulation is performed. In order for the fiber portion 753 inserted into the inside of the head portion 751 to discharge heat of the battery to the outside, it is preferable that the discharge groove 756 is formed at regular intervals along the outer circumferential surface of the head portion 751. Do. The fiber portion 753 is, for example, a membrane of fluorine resin with a fine hole, and may be a membrane that can simultaneously perform an air circulation function (waterproof, windproof, and moisture permeable) as well as a waterproof function. A waterproof ring portion 754 is inserted into the lower surface 755 of the head portion 751 in a circumferential direction so that water does not flow into the interior of the battery pack portion 100 through the pillar portion 752 from the outside.

Meanwhile, the departure detection unit 700 described above is fixedly attached by a magnetic field and senses a magnetic field to detect a user's departure. As another example of the departure detection unit 700, a weight sensor is attached to the surfboard 100, and it can be determined whether the user has deviated according to the detection signal of the weight sensor. That is, by placing the weight sensor on the lower surface of the upper surface of the housing 10 with the foot fixing parts 11a and 11b and electrically connecting the weight sensor and the controller to each other, the controller controls the user's signal according to the signal of the weight sensor. Deviation can be detected. When the user's departure is detected, the control unit stops driving the motor. The weight sensor may be arranged on either side or both sides of the plurality of foot fixing parts.

In the description of the present invention, descriptions that are obvious to those skilled in the art and those skilled in the art may be omitted, and descriptions of the omitted components (methods) and functions may be sufficiently referenced without departing from the technical spirit of the present invention. Will be able to.

Descriptions of the components and functions of the above-described parts have been described separately from each other for convenience of description, and if necessary, any one component and function may be implemented by being integrated into other components, or may be implemented by being further subdivided.

As described above, with reference to one embodiment of the present invention, the present invention is not limited to this, and various modifications and applications are possible. That is, those skilled in the art will readily understand that many modifications are possible without departing from the gist of the present invention. In addition, it should be noted that when it is determined that a detailed description of a known function related to the present invention and its configuration or a coupling relationship for each configuration of the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description is omitted. something to do.

10: Surf board (or housing)
11a, 11b: foot fixing (or footrest)
12: ankle band (or band part)
13: battery insertion groove
14: connecting cable
100: battery pack unit
110: cell part
120: lower surface (or rear)
121: Settling home
122: base portion
123: protrusion
124: connector insertion groove
125: waterproof sealing
125a: first sealing protrusion
140: battery connector
141a: first guide groove
141b: second guide groove
142: Power connection terminal insertion groove
143: Control terminal insertion groove
200: control room
210: control room cover
211: upper surface
212: first partition wall
213: second partition wall
214: connector insertion groove
215: waterproof groove
220: control circuit
230: room housing
240: control room connector
241a: First Guide
241b: Second Guide
242: power connection terminal
243: control terminal
300: motor unit
310: motor
320: motor housing
330: motor rear cover
400: jet tunnel
410: impeller
420: shaft
500: guide vane
600: jet nozzle unit
700: departure detection unit
710: detachable portion (or contact portion)
711: Magnetic cap
711a: First fixing hole
711b: Second fixing hole
711c: Magnetic acceptance groove
711d: Magnetic film seating groove
712: Magnetic (or magnet)
713: Magnetic film portion (or magnetic film portion)
720: holder
721: Detachable seating groove
722: thread groove
723: Metal part seating groove
730: metal part
740: Magnetic switch sensor unit
750: air circulation section
751: Head
752: Column
753: fiber section
754: waterproof ring
755: guide section
756: discharge groove

Claims (3)

Board housing,
Band part worn by the user,
When a magnetic field is formed and fixedly attached to the housing by a magnetic force, and being physically connected to the band portion, when the user leaves the board, it is detached from the housing to detect the user's departure, and
It includes a control unit for receiving a departure detection signal generated by the departure detection unit to generate a drive stop signal to stop the board,
The departure detection unit,
Detachable part with magnetic,
Holder portion is fixed to the upper surface of the board, the detachable portion is seated on the upper surface by a magnetic force,
A metal portion seated on the lower surface of the holder portion and fixedly attached to the detachable portion by interacting with the magnet
When the user detaches from the board, the detachable portion is detached from the holder portion to recognize a magnetic field, and includes a sensor portion disposed on the lower surface of the holder portion to generate a departure detection signal. Surfboard.
delete According to claim 1,
Detachable battery pack unit mounted from the upper surface of the board housing to the lower surface,
Further comprising an air circulation portion that is fixed to the holder portion so as to communicate with each other in the interior space of the battery pack portion to discharge the battery heat generated in the battery pack portion to the outside and air circulation,
The air circulation unit,
The head portion is provided inside the fiber portion to be air circulation,
A pillar portion extending from the head portion and fixed to the holder by a screw thread,
Guide portion formed on the lower surface of the head, and
It is provided in the circumferential direction on the lower surface of the guide portion, the electric surfboard to detect the departure of the user, characterized in that it comprises a waterproof ring portion to prevent water from permeating when fixed to the holder.

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