KR20190131805A - Electric surfboard - Google Patents

Abstract

The present invention relates to an electric surfboard and, more specifically, to an electric surfboard having an improved structure capable of naturally cooling a motor unit and a control unit generating much heat in the surfboard and, also, stopping operation of the surfboard by checking whether a user is dislodged from the surfboard while the surfboard is operated. To achieve the purpose of the present invention, the electric surfboard includes: a board housing; a pair of foot fixing units individually fixed to the front and rear of the upper surface of the board housing; a detachable battery pack unit installed on the upper surface of the board housing toward the lower surface in a space between the foot fixing units; a control room unit naturally cooled by water flowing on a rear surface when a motor of the board is driven, by being connected and fixed to the lower surface of the board housing in a space between the lower surface of the battery pack unit and the lower surface of the board housing; a motor unit driving along the operation of the control room unit and naturally cooled by the water flowing on the rear surface when the motor of the board is driven as the motor unit is installed on the lower surface of the board by being connected and fixed to one side of the control room unit; and a water jet unit connected in a series with the motor unit to generate propulsion of the board in accordance with the operation of the motor unit. The battery pack unit is installed at the center forming the center of gravity in the board in accordance with the series arrangement of the motor unit and the water jet unit.

Description

Electric surfboard {Electric surfboard}

The present invention relates to an electric surfboard, and more particularly, to check whether the user is separated during the driving of the surfboard to stop the driving of the surfboard, and also generates heat from the control unit and the motor unit generating a lot of heat in the surfboard. The present invention relates to an electric surfboard with improved structure capable of naturally cooling.

The surf board driven by the motor has a problem in that the motor does not stop when the user rides the surf board and loses its center from the surf board and does not stop. In order to solve this problem, the prior document 10-1758290 to control the speed of the motor by the handle portion. However, the handle portion for controlling the surf board may not be provided in the surf board as necessary, so in consideration of such a situation comprehensively requires the invention to detect the user when the departure from the surf board and stop driving.

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

Republic of Korea Patent Publication No. 10-1753612 (Invention name: smart binding detachable device for snowboard) Republic of Korea Patent Publication No. 10-1819497 (Invention name: skateboard traveling device equipped with a removable footrest that can be controlled by a portable smart device) Republic of Korea Patent Publication No. 10-1758290 (Name of the invention: Modular surf boards promoted by the water jet) Japanese Patent Laid-Open No. 9-76990 Japanese Patent Laid-Open No. 10-314365 United States Patent Application Publication US 2010/0059969

Therefore, the present invention was created in order to solve the above-mentioned problems, and detects whether the user has escaped from the surf board to stop the driving of the motor and to cool the heat generated from the motor unit and the controller by natural cooling. Its purpose is to provide the invention.

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

The above-described object of the present invention is a removable battery which is mounted in a direction from the upper surface to the lower surface of the board housing in the space between the board housing, a pair of foot fixing portions respectively fixed to the front and rear of the upper surface of the board housing, the foot fixing portion A control room part which is naturally cooled by water flowing in the back surface when the motor of the board is driven by being fixedly coupled to the lower surface of the board housing in a space between the pack part and the lower surface of the battery pack part and the lower surface of the board housing; Drives in accordance with the drive of the control room, and coupled to one side of the control room is disposed on the lower surface of the board is a motor part that is naturally cooled by water flowing through the back when driving the motor of the board, and the driving force of the board according to the drive of the motor And a water jet unit connected in series with the motor unit to generate the battery pack unit, wherein the battery pack unit is arranged in series with the motor unit and the one-jet unit. 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 units are disposed and connected to the lower surface of the battery pack unit and the upper surface of the control room unit, respectively, so that power of the battery pack unit is supplied to the control room unit.

In addition, a first partition wall protruding upwardly on one side upper surface of the control room part, a second partition wall formed inside the first partition wall while protruding upward, and the first partition wall and the second partition wall are formed on an upper surface of the control room part. Waterproof grooves formed in the interspace, and the connector insertion groove is formed in the interior of the second partition wall is inserted into the control room connector,

The lower surface of the battery pack part includes a mounting groove, a base portion provided in the mounting groove, and a protrusion provided in the base portion to form a shape corresponding to the first and second partition walls, and is fitted and fixed in the circumferential direction of the protrusion to be waterproofed together with the protrusion. It further comprises a waterproof sealing part inserted into the groove, the control room connector is formed protruding upwards, the power connection terminal unit provided between the first and second guides, the first and second guides spaced apart from each other, and the first, It is provided between the two guides, and includes a control terminal for transmitting a control signal transmitted from the control room,

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

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

In addition, the detachment detecting unit is fixed to the detachable portion provided with the magnetic, the upper surface of the board, the detachable portion is mounted on the upper surface of the holder by the magnetic force, it is seated on the lower surface of the holder to interact with the magnetic to fix the detachable portion The metal part may include a sensor part disposed on a lower surface of the holder part to detect a magnetic field and generate a departure detection signal by being detached from the holder part when the user detaches from the board.

In addition, the removable battery pack unit mounted in the direction of the lower surface from the upper surface of the board housing, the holder to be in communication with the internal space of the battery pack portion is fixed to the holder to release the battery heat generated in the battery pack portion to the outside to allow air circulation It further comprises a circulation portion,

The air circulation unit has a head portion provided inside the fiber portion for air circulation, a length extending from the head portion, a pillar portion fixed with 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 to prevent water from seeping when fixed to the holder.

According to the present invention as described above has the effect of stopping the driving of the motor by detecting whether or not the user is separated from the surf board and cooling the heat generated from the motor unit and the controller by natural cooling.

The following drawings, which are attached to this specification, illustrate one preferred embodiment of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a perspective view of a surf board according to a first embodiment of the present invention,
2 is a cross-sectional view of a surf board according to a first embodiment of the present invention;
3 and 4 are views showing a battery connector connection portion according to a first embodiment of the present invention,
5 and 6 are views showing a control room connector connection according to a first embodiment of the present invention,
7 and 8 are cross-sectional views of the batter connector connecting portion and the control room connector connecting portion according to the first embodiment of the present invention;
9 is an exploded view of a surf board according to a first embodiment of the present invention;
10 is a view in which the surf board according to the first embodiment of the present invention is advanced on the water,
11 is a perspective view of a surf board including a departure detection unit for detecting a departure of the user 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 are exploded views 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 the air circulation unit according to the second embodiment of the present invention.

Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention. In addition, one Example described below does not unduly limit the content of this invention described in the Claim, and the whole structure demonstrated by this Embodiment is not necessarily required as a solution of this invention. In addition, the matters obvious to those skilled in the art and the art may be omitted, and the description of the omitted elements (methods) and functions may be sufficiently referred to without departing from the spirit of the present invention.

(First embodiment)

In the electric surf board 10 according to the first embodiment of the present invention, the control room part and the motor part are disposed on the bottom surface of the board housing to be cooled by water flowing on the back of the surf board, and the connector connection between the battery pack part and the control room part is performed. It is the device which newly invented the structure. As illustrated in FIG. 1, the surf board 10 is provided with foot fixing parts 11a and 11b at the front and the rear of the upper surface of the housing 10 of the surf board, respectively. Accordingly, the user of the surf board can drive the surf board in a desired direction by inserting the foot into the foot fixing portions 11a and 11b, respectively. The foot fixing parts 11a and 11b may be provided diagonally or in a straight line at the front and the rear of the upper surface of the surf board 10, respectively. 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 and provided. Since the surf board 10 according to the present invention moves by power, when the user rides the surf board from the sea and leaves the surf board 10, the ankle band 12 and the magnetic senses connected to each other are interlocked with each other. The surf board 10 is automatically stopped by stopping the supply of power supplied to the apparatus.

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 toward the lower surface from the upper surface of the housing 10. Can be attached and detached conveniently. The battery pack part 100 is disposed in the space between the foot fixing parts 11a and 11b, which is approximately the center area of the housing 10, to hold the entire center of gravity of the surf board 10. The lower surface of the battery pack unit 100 and the bottom surface of the housing are provided with an insertion space into which the control room unit 200 to be described later is inserted. The battery pack unit 100 supplies power to the surf board by packaging the 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 200 supplies power to the control room unit 200 and receives the data transmitted from the control room unit 200. 200 and the connector need to be connected to each other. Hereinafter, a method of interconnecting the battery pack unit 100 and the control room unit 200 will be described.

As shown in FIG. 3, a battery connector connection part is disposed at a central portion of one end portion of the rear part 120 of the battery pack part 100. The battery connector connection part is roughly composed of a seating groove 121, a base part 122, a protrusion 123, a connector insertion groove 124, a waterproof sealing part 125, and a battery connector part 140. The mounting groove 121 is formed in consideration of the depth that the protrusion 123 can be inserted into the waterproof groove 215, as shown in FIG. The mounting groove 121 has a base portion 122 and a protrusion 123 protruding upward from the base portion 122 and having a predetermined thickness. The protrusion 123 is formed such that the connector insertion groove 124 is formed at an inner side so that the battery connector 140 is inserted. The protrusion 123 is a circle or ellipse shape is provided with a waterproof sealing portion 125 in the outer circumferential direction to prevent water from coming in from the outside. The waterproof sealing part 125 is fixed to the upper surface of the base part 122 while being fixed to the outer circumferential direction of the protrusion 123. The waterproof sealing part 125 includes first, second and third sealing protrusions 125a, 125b and 125c which are formed to protrude more than the adjacent circumferential surface in the circumferential direction as shown in FIG. 8. The first, second, and third sealing protrusions 125a, 125b, and 125c are formed to be spaced apart from each other in a vertical direction. The first, second, and third sealing protrusions 125a, 125b, and 125c are in close contact with the inner side surface of the first partition wall 212 when they are inserted into the waterproof grooves 215 to prevent water from seeping into the inside. 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 circumferential thickness of the waterproof sealing portion 125 to protrude at intervals from each other in the vertical direction, there is an advantage that can be easily removable while achieving a waterproof function.

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

The control room unit 200 according to the first exemplary embodiment of the present invention is disposed in a space formed between the battery pack unit 100 and the bottom surface of the housing 10 as shown in FIGS. 1 and 2. Therefore, the control room unit 200 is disposed below the battery pack unit 100 vertically. As the battery pack unit 100 is disposed on the bottom surface of the housing 10, the battery pack unit 100 may be naturally cooled by water as shown in FIG. 10. The control room unit 200 controls the driving of the motor. As an example, the surf board 10 drives the motor to move forward while outputting a predetermined output according to the user's manipulation, and when the user leaves the surf board 10, the surf board 10 detects the departure and stops the driving of the surf board 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 compartmentalized battery insertion groove 13. As shown in FIGS. 5 and 9, the control room unit 200 includes a control room cover 210, a control circuit unit 220, and a room housing 230. The control circuit unit 220 is inserted into 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 240, which are control room connector connections, are provided. Are formed respectively arranged. The control room connector connection is formed at a vertically downward position corresponding to the battery connector connection. The first and second partitions 212 and 213 are spaced apart from each other by a predetermined distance and formed in an upward direction to form the waterproof groove 215. The shape of the first and second partitions 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 part 100 and the control room part 200 are connected to each other, the protrusion part 123 and the waterproof sealing part 125 are inserted into the waterproof groove 215 to prevent water from penetrating into the inside. Perform. The first partition 212 has a larger diameter than the second partition 213. As the connector inserting groove 214 is formed inside the second partition 213, the control room connector 240 is inserted and fixed to the inside as illustrated in FIG. 6.

The control room connector 240 protrudes upward and is connected to a power supply provided in a 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. And a terminal portion 242 and a control terminal portion 243. The first and second guides 241a and 241b are inserted into and connected to the first and second guide grooves 141a and 141b when the control room connector connection part and the battery connector connection part are connected to each other, thereby guiding the mutual connection and firmly connecting the connectors. I support it. The power connection terminal portion 242 is inserted into and connected to the power connection terminal insertion groove 142 when the control room connector connection portion and the battery connector connection portion are connected to each other, so that power is supplied from the battery pack part 100 to the control room portion 200. The control terminal unit 243 is inserted into and connected to the control terminal insertion groove 143 when the control room connector connection unit and the battery connector connection unit are connected to each other, thereby controlling the control signal generated in the control circuit unit 220 by the battery management system of the battery pack unit 100. (BMS) or conversely, a signal generated in the BMS is transmitted to the control circuit unit 220. As shown in FIGS. 7 and 8, the control room connector connection part and the battery connector connection part are connected to each other to exchange power or data with each other.

As shown in FIG. 2 and FIG. 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. Since the room housing 230 and the motor unit 300 are closely fixed to the bottom bottom surface of the surf board and directly connected to each other, the room housing 230 and the motor unit 300 may be naturally cooled by water flowing through the rear surface. That is, as shown in FIG. 10, the rear surface of the room housing 230 and the motor unit 300 is immersed in the water when the surf board 10 is operated. In this case, when the surf board 10 is advanced, the water The room housing 230 and the motor unit 300 may be naturally cooled by the water flowing in the back surface immersed in the water.

The motor unit 300 may be roughly configured as a motor housing 320 and a motor rear cover 330 which perform a waterproof function while surrounding the motor 310 and the motor 310 rotating under the control of the control circuit unit 220. Can be. The water jet unit includes an impeller 410 and a shaft 420 rotated by the rotation of the jet tunnel 400 and the motor 310 to inject the sucked water backward, and the guide vane 500 to guide the injected water. And a jet nozzle unit 600.

The battery pack unit 100 and the control room unit 200 are sequentially disposed in an approximately central region of the housing 10 of the surf board. The control room unit 200 is disposed below the battery pack unit 100 vertically. In addition, the motor unit 300 and the water jet units 400, 500, and 600 are directly connected in one horizontal direction (the right direction with reference to FIG. 2) in one side of the control room 200. The first foot fixing part 11a is disposed at the front of the battery pack part 100 and the second foot fixing part 11b is disposed at the rear of the battery pack part 100 for the center of the surf board. The second foot fixing part 11b is preferably provided in the upper region of the motor part 300 and the water jet part 400, 500, 600 for the center of gravity.

(2nd Example)

Surf board 10 for detecting the departure of the user according to the second embodiment of the present invention automatically stops the surf board when the user leaves the surf board (for example, when the user falls on the water while riding the surf board) It is an invention that allows the user to easily recover the surfboard.

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 Figure 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 allow air circulation. The detachment detecting part 700 includes a detachable part 710, a holder part 720, a metal part 730, and a magnetic switch sensor part 740.

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

The holder part 720 has a seating groove 721 in which the detachable part 710 is seated on an upper surface thereof, and a thread groove part for fixing the air circulation part 750 to be described later 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 part 730 is seated at a position corresponding to the seating groove 721. When the metal part 730 is seated in the seating groove 723 of the lower surface of the holder and the detachable part 710 is seated in the seating groove 721 of the upper surface of the holder, the detachable part 710 is held by the magnetic force. 720 is fixedly attached. The holder part 720 is formed on an upper surface of the battery pack part 100.

The metal part 730 is mounted on the mounting groove 723 of the holder part using a metal material such as iron so that the magnetic force and the magnetic force of the detachable part described above are applied. The magnetic 712 and the metal part 730 have a circular or elliptic cross section. The magnetic switch sensor unit 740 is provided near the metal part 730 to detect the magnetic field. That is, the sensor unit 740 is provided with a sensor for detecting a magnetic field, and a control unit for generating a departure detection signal in response to the sensor signal. The sensor unit 740 may be disposed near the bottom of the metal unit 730 to recognize the magnetic field well. 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. For example, the sensor unit 740 may be disposed in the lower region of the metal portion so that the metal portion 730 partially overlaps with the arrangement region. The control unit receives a signal from the sensor detecting the detachment of the detachable unit 710, generates a detachment detection signal, and generates a driving stop signal for stopping the driving of the motor based on the detachment detection signal and transmits it to the control room unit 200. do. The control room unit 200 stops the driving of the motor according to the driving stop signal to stop the surf board when the user is separated from the surf board 10.

The air circulation portion 750 is screwed into the threaded groove portion 722 of the holder portion. As shown in FIGS. 15 and 16, the air circulation 750 includes a head 751 and a pillar 752 extending in length from the head. A thread is formed in the outer circumferential direction of the pillar portion 752 and screwed to the threaded groove portion 722. The head portion 751 protrudes outwardly to allow air circulation when the pillar portion 752 is screwed to the holder portion 720. Nasan acid is formed on the outer side of the pillar portion 752, and the inner side is hollow. As the hollow portion 752 is inserted into and fastened to the holder portion 720, the hollow portion may communicate with the inside of the battery pack portion 100 so that the heat of the battery pack portion 100 may flow into the inside of the pillar portion 752. Can be. The head portion 751 has a larger diameter than the pillar portion 752. Inside the head 751 is provided a fiber portion 753 that is smaller than the outer diameter of the head 751 and larger than the inner diameter of the pillar 752. The fiber portion 753 communicates with the inside of the pillar portion 752, so that the 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 inside the head 751 to discharge the heat of the battery to the outside, the head portion 751 is preferably provided with a discharge groove 756 along the outer circumferential surface at regular intervals. Do. As an example, the fiber portion 753 may be a membrane made of a microporous fluorine resin, which may simultaneously perform a water circulation function and an air circulation function (waterproof, windproof, moisture permeable). The waterproof ring part 754 is inserted into the lower surface 755 of the head 751 to prevent water from flowing into the battery pack part 100 from the outside through the pillar part 752.

Meanwhile, the departure detecting unit 700 described above is fixedly attached by a magnetic field and senses the user's departure by sensing the magnetic field. As another example of the departure detecting unit 700, the weight sensor may be attached to the surf board 100, and the user may check whether the user has separated 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 is provided with the foot fixing parts (11a, 11b) and by electrically connecting the weight sensor and the controller with each other, the control unit according to the signal of the weight sensor Detect deviations. If the user's departure is detected, the control unit stops the drive of the muter. The weight sensor may be disposed on either side or both sides of the plurality of foot fixing portions.

In the following description of the present invention, those skilled in the art and those skilled in the art may omit descriptions, and descriptions of such omitted components (methods) and functions may be sufficiently referred to without departing from the technical spirit of the present invention. Could be.

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

As mentioned above, although demonstrated with reference to one Embodiment of this invention, this invention is not limited to this, A various deformation | transformation and an application are possible. That is, those skilled in the art will readily appreciate that many modifications are possible without departing from the spirit of the invention. In addition, when it is determined that the detailed description of the known function and its configuration or the coupling relationship for each configuration of the present invention may unnecessarily obscure the subject matter of the present invention, it should be noted that the detailed description is omitted. something to do.

10: surfboard (or housing)
11a, 11b: foot fixing part (or foot rest)
12: ankle band (or band portion)
13: battery insertion groove
14: connecting cable
100: battery pack unit
110: cell part
120: lower surface (or rear)
121: settling groove
122: base part
123: projection
124: Connector Insertion Groove
125: waterproof sealing part
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 bulkhead
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 unit
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 part
700: deviation detection unit
710: detachable part (or contact part)
711: magnetic cap
711a: first fixing hole
711b: second fixing hole
711c: Magnetic Receptacle Home
711d: Magnetic film seating groove
712 magnetic (or magnet)
713: magnetic film portion (or magnetic film portion)
720: Holder
721: removable seating recess
722: thread groove
723: metal seating groove
730 metal parts
740: magnetic switch sensor unit
750: air circulation
751 head
752: pillar
753: fiber part
754: waterproof ring
755: guide part
756: exhaust groove

Claims (3)

Board housing,
Band part worn by the user,
A magnetic field is formed and fixedly attached to the housing by a magnetic force, and is detached from the housing when the user detaches from the board by being physically connected to the band part to detect the user's detachment;
And a controller configured to receive a departure detection signal generated by the departure detection unit and generate a driving stop signal to stop the board.
The method of claim 1,
The departure detecting unit,
Detachable part equipped with magnetic,
A holder part fixed to the upper surface of the board, wherein the detachable part is seated on the upper surface by a magnetic force,
A metal part seated on a lower surface of the holder part to fix and attach the detachable part by interacting with the magnetic;
And a sensor unit disposed on the lower surface of the holder unit to detect a magnetic field and generate a detection signal by detaching the detachable unit from the holder unit when the user detaches from the board. Surf board.
The method of claim 2,
Removable battery pack unit mounted in the lower surface direction from the upper surface of the board housing,
An air circulation unit configured to be fixed to the holder so as to communicate with an internal space of the battery pack unit, thereby discharging battery heat generated in the battery pack unit to the outside and allowing air circulation;
The air circulation unit,
Head portion provided inside the fiber portion to be air circulation,
A pillar extending in length from the head and fixed to the holder by a thread;
A guide portion formed on the lower surface of the head, and
It is provided in the lower surface of the guide portion in the circumferential direction electric surfboard for detecting the user's departure characterized in that it comprises a waterproof ring to prevent water from penetrating when fixed to the holder.

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