SPLIT ELECTRIC SKATEBOARD
A split electric skateboard that includes a deck, a battery unit, a front bracket, a rear bracket, wheels, a main control module, hub motors, a heat dissipator, and a remote control module. The wheels include driven wheels and drive wheels. The split electric skateboard is rationally designed to guarantee the safety, reliability, and stability of the tire bead during high-speed use. The design makes it more convenient to remove and replace the tire bead. Additionally, even when then battery runs out of power, the skateboard may still be used as a common skateboard such that the regenerated energy during non-electric use may be absorbed by the battery unit to achieve a battery charging effect.
The present application claims priority 35 U.S.C. § 119 to Chinese Patent Publication No. CN 201720494463.7 (filed on May 5, 2017), which is hereby incorporated by reference in its entirety.
TECHNICAL FIELDEmbodiments relate to an electric skateboard, more particularly, a split electric skateboard.
BACKGROUNDSkateboarding is becoming more and more common in outdoor activities. Electric skateboards have attracted much attention and is popular as a newly-emerged branch of skateboarding. Electric skateboards, however, seen in current markets have a design that includes one long box (that includes a battery, a control module, and other accessories) installed under an ordinary board, a motor arranged externally, and a main wheel which is driven to rotate via a belt transmission. With such conventional structure, the skateboard will appear more complicated and cumbersome. The board lacks elasticity and shock-absorbing effect. The skateboard is driven using a large current, and energy consumption increases greatly. This shortens the mileage range of the skateboard. The belt transmission also requires regular replacement. When in a non-powered state, the electric skateboard cannot be used as an ordinary (i.e., non-electric/manually powered) skateboard. Moreover, in terms of technology design, some skateboards use electronic speed control (ESC) as an aero-model, which makes the board less stable in performance.
SUMMARYIn accordance with embodiments, a split electric skateboard is provided to solve the above-listed problems. To achieve the above-mentioned purpose, embodiments provides the following technical solution: a split electric skateboard comprising a board or deck, a battery unit, a front bracket and a rear bracket respectively positioned at the front end and the rear end of the deck, wheels including two driven wheels and two drive tire beads, a main control module, hub motors, a heat dissipator, and a remote control module.
The left end and the right end of the front bracket are equipped with the driven wheels, while the left end and the right end of the rear bracket are equipped with the hub motors. The hub motors are covered with drive tire beads.
The battery unit may be mounted in the rear region at a bottom surface of the deck, and includes a charging port. The bottom surface of the deck may also may include the main control module, which is operatively connected to the battery unit, the hub motors, and a power actuator which is arranged at an electric control box. The heat dissipator may be arranged on a metal (e.g., aluminum) substrate of the main control module. The remote control module and the main control module are in electronic communication.
A further solution of embodiments also includes casing components that include a battery cover, a dust cover, and the electric control box. The dust cover is arranged on the charging port. The battery unit is internally built in the battery cover, the battery cover being fixed and arranged in the front end of the bottom surface of the deck. The battery cover is designed with a through-hole used for installing the charging port. The main control module is externally positioned on the deck with the electric control box and particularly within electric control box. The control box is fixed and arranged in the rear end of the bottom surface of the deck.
Another solution of embodiments is that the battery unit comprises 18650 rechargeable battery unit.
Yet and still, a further solution of embodiments is that the drive tire beads are fitted on the casing of hub motors by joggle of a mating surface groove.
As a further solution of embodiments is that an external side of the hub motors is connected with a motor edge cover via a plurality of fastening screws.
As a further solution of embodiments is that an outer surface of the deck is pasted with sandpaper.
Compared with contemporary designs, some advantages of embodiments are as follows. The split electric skateboard has a rational design, compact structure, and aesthetically pleasing shape. The split electric skateboard is simple to use and has satisfactory popularizing significance in market. The split design retains the elasticity of the deck and comfort when a user is passing through obstacles to the greatest extent. Safety, reliability, and stability of the tire beads are guaranteed during high-speed use. Removal and replacement of the tire beads may be done in a convenient manner. When power to the battery runs out, the split electric skateboard may be converted to a manually driven one, such that energy regenerated during such manual use may be absorbed by the battery to achieve a recharging state of the battery.
As illustrated in
The front bracket 3 and the rear bracket 11 are respectively positioned at the front end and the rear end of deck 1. The deck 11 may be pasted with sandpaper.
The battery unit 2 may comprise, for example, an 18650-type rechargeable battery unit, and may be positioned in a bottom/back surface of the deck 1. The battery unit 2 may be connected to a charging port 5. The battery unit 2 may be internally built in the battery cover 6. The battery cover 6 may fixed and installed in the front end of bottom surface of the deck 1, for example, mechanically by screws. The battery cover 6 may be mounted with through-hole(s) used for installing the charging port 5. The dust cover 7 may be positioned on the charging port 5.
The bottom surface at the rear region of the deck 1 may also include the main control module 16. The external side of the main control module 16 may be set with the electric control box 9. The electric control box 9 may be fixed and installed, for example, at a bottom surface of the rear end of the deck 1 by screws. A power actuator 8 may be installed in the electric control box 9.
The heat dissipator 10 may be fitted on a metal (e.g., aluminum) substrate of the main control module 16. The main control module 16 may be fixed and connected within the electric control box 9 by screws. The heat dissipating side of the heat dissipator 10 may be externally placed in a heat dissipation and ventilation opening of the electric control box 9. A lead wire of the charging port 5 may be connected to a charging lead wire of the battery unit 2. A power line of battery unit 2 may be connected to a corresponding power port of the main control module 16. A lead wire of the two hub motors 12 may be connected to a lead wire output power port of the main control module 16. A lead wire of the power actuator 8 may be connected to a corresponding power port of the main control module 16. The skateboard and the remote control module 17 are powered on and perform communication matching, the remote control module 17 may be connected to the main control module 16, then the remote control module 17 may exhibit complete control of the skateboard and multiple operation functions of soft starting may be achieved.
As illustrated in
During installation, firstly, the motor edge cover 14 may be installed in the rotor assembly 104 of the hub motors 12 from side edge. Using fastening screws 15 for fixation, then hub motors 12 may be installed in the rear bracket 11. The motor wire 101 may be led out from the axial center of the motor main shaft 102. The motor main shaft 102 may be inlaid in axial center of the stator assembly 103. The axial centers of both the motor main shaft 102 and the stator assembly 103 are mounted with positioning clipping slots, the positioning clipping slots of each being buckled, fixed, and connected with each other. The rotor assembly 104 may be installed in the bearing wall of both sides of the stator assembly 103. A clipping piece may be set in axial center of the rotor assembly and occludes with the bearing of the stator assembly 103 to guarantee that the rotor assembly 104 does not deviate from stator assembly 103.
As it includes an aluminum casing, the rotor assembly 104 may be protected by the whole semi-enclosed aluminum casing. The round outer wall of the aluminum casing may be set with an evenly distributed convex. The convex may be a “tenon-shaped” convex. The rotor assembly 104 may be covered with the drive tire beads 13.
The internal wall of the drive tire beads 13 may be set with groove which matches the convex in the external wall of the rotor assembly 104, the groove may be “mortise-structured” groove, the groove matches the convex in the casing of the rotor assembly 104 so that drive tire beads are able to perfectly fit the casing of the rotor assembly 104 and it may be guaranteed that drive tire beads 13 will not slip during rotation.
The motor edge cover 14 may be fixed and connected in the position of the front opening of the rotor assembly 104 by a plurality of the fastening screws 15. The motor edge cover 14 may be used for fixing the axial position of the drive tire beads 13 to guarantee that the drive tire beads 13 do not deviate during rotation. The drive tire beads 13 may be made of polyurethane (PU) materials. The diameter of the motor edge cover 6 may be greater than the internal diameter of hollow cylindrical tire beads 5. The motor edge cover 6 may be in the external side of the tire beads 5. The matching between the drive tire beads 13 and the rotor assembly 104 adopts a “tenon-and-mortise” structure to guarantee both reliability and stability of the wheels rotation and great improvement in replacement and maintenance of the tire beads. The rotor assembly 104 may be small and portable in structure and may be directly positioned within the PU-textured wheel. The wire may be led out from axial center so that the structural design of the skateboard may be greatly simplified.
As illustrated in
The signal indicator light may include light guide columns 207 that are associated with a corresponding one a skateboard battery capacity indicator light, a gear indicator light, a control module battery capacity indicator light, and a remote control module recharging indicator light. There are four lights in the skateboard battery capacity indicator light, the number of the lit-up lights indicates the skateboard battery capacity which may be watched by a user at any time. The remote control module recharging indicator light adopts a dual-color recharging indicator light: a red color visually indicates “recharging in progress,” while a green color visually indicates “recharging completed.”
The gear indicator light adopts a three-color (e.g., blue, green, and red) gear status light which corresponds to three different gear modes which are high speed, medium speed and low speed. The different flicker frequency of the remote control module battery capacity indicator light corresponds to the remote control module battery capacity which are 100%, 50%, and 20%. The casing includes a right side cover 201 and a left side cover 206, the right side cover 201 and left side cover 206 being fixed and connected mechanically by a plurality of bolts. The casing 201, 206 may include, in an interior space thereof, the printed circuit board (PCB) 209, the joystick 202, and the rechargeable lithium battery 2010.
The speed-regulating rod may be inserted in the shaft of the joystick 202, and the signal indicator light may be installed in printed circuit board (PCB) 209. The light guide columns 207 may be placed for receipt respectively by the corresponding square-shaped hole positions of the left side cover 206. The forward-backward rotation switch-over key 208 may be buckled in the printed circuit board (PCB) 209. The power key 204 and the gear switch-over key 205 are respectively received by corresponding two round-shaped hole positions pre-reserved in left side cover 206. The printed circuit board (PCB) 209 may be installed by clipping, for example, within the left side cover 206. The printed circuit board (PCB) may also be fixed in the left side cover 206 by screws.
The joystick 202 and the speed-regulating rod 203 may be put in the upper left corner of the casing. In the upper left end of the casing, an arc-shaped through-hole may be provided for rotation of the speed-regulating rod 203. The speed-regulating rod 203 is to extend to the outside of the casing. The lead wire of the joystick 202 may be connected to a corresponding terminal of the printed circuit board (PCB) 209. The rechargeable lithium battery 2010 may be connected to a corresponding terminal of the printed circuit board (PCB) 209.
A user may push the power actuator 204 for a predetermined length of time such as, for example, three seconds, to activate the power supply of the remote control module 17. The electric skateboard may be powered on complete matching procedure and receives a signal emitted from the remote control module 17. Setting the forward-backward rotation switch 208 at a forward rotation to propel forward the speed-regulating rod 203, and thus, the electric skateboard will move in forward direction. As the propelling range of the speed-regulating rod 203 increases, the electric skateboard will gradually increase speed. A user may manipulate the speed-regulating rod 203 backward from a neutral position to achieve a braking effect such that the skateboard gradually decreases speed until coming to a stop. A user may manipulate the forward-backward rotation switch 208 to a backward rotation, which in turn moves the speed-regulating rod 203 to a forward position, thereby moving the electric skateboard in a reversed direction. The accelerating and braking functions are the same with the ones of the forward direction.
A working principle of embodiments is such that, during installation, the motor edge cover 14 may be mounted in the motor from a side edge, and then fixing them mechanically via fastening screws 15. The hub motors 12 may then be installed in the rear bracket 11 and also fixed. The dissipating side of the heat dissipator 10 is externally set in the heat dissipation and ventilation opening of the electric control box 9 for heat dissipation.
The split electric skateboard and remote control module 17 may be activated, and communication synching may then conducted for them. The remote control module 17 is operatively connected to the main control module 16 such that the remote control module 17 may completely control the split electric skateboard to realize the plurality of operation functions of the soft start.
Structurally, the split electric skateboard adopts a two-end layout design, i.e., battery-and-control module layout, thickness of the split electric skateboard may be 12 mm to enable an optimum elasticity and shock-absorbing effect which cannot be achieved by the contemporary electric skateboard.
In design of the main control module 16, a switch-over of the remote control over forward rotation and backward rotation may make the motor drive signal of the main control module 16 and the Hall sensor signal's linear ordering conduct corresponding switch-over and load in the motor's stator's assembly to generate a reversed magnetic field, and the motor's outer rotor assembly may rotate from a forward direction to a backward direction after functioned by the force moment generated from the reversed magnetic field. Meanwhile, the motors' drive signal and the Hall sensor's signal are a group of signals with pulse-width that may be modulated. As the propelling range of the control module's speed-regulating rod varies, the pulse-width produced will also vary with it, and the frequency of the drive signal will also vary. In that way, the rotation speed loaded in and generated from the motor will achieve a modulatable effect.
In driving force, the design of the dual-drive hub motor having a lengthened stator strong driving force may be adopted, the highest speed per hour reaches the test value of 45 km/h and a slope of 20° C. may be easily climbed upward. Moreover, the battery unit configuration made up of twenty (20) cells of the 18650 dynamic battery enables an overall riding journey to reach over 30 km.
In design of the wheels, in consideration of the tire bead's maintenance and replacement, a new type of buckling technique for the electric motor and the tire beads may be made to guarantee both tire bead's safety, reliability, and stability during high-speed travel of the split electric skateboard. The design also enables convenient removal and replacement of the tire beads. Even when the battery capacity is depleted, the split electric skateboard may still be used in a manual state as ordinary (non-electric) skateboard such that the energy regenerated during this state may be absorbed by the battery, to obtain a recharging effect of the battery.
The split electric skateboard has a rational design, compact structure, and aesthetically pleasing shape. The split design, to the greatest extent, retains elasticity of the deck and thereby provides comfort in passing through obstacles. The tire bead's safety, reliability, and stability during high-speed travel are guaranteed. It may be more convenient to remove and replace the tire bead. In addition, even when the battery capacity is depleted, the split electric skateboard may still be used in a manual state such that the regenerated energy during this manual state may be absorbed by the battery to achieve a recharging effect. The split electric skateboard may be simple to use and provides a satisfactory market popularizing value.
In the description of the split electric skateboard, it may be necessary to state that, unless otherwise stipulated or regulated, the term “set,” “connected together” and “connection” should be understood in their general meaning. For example, the “connection” may be a fixed connection, a demountable connection, or an integral connection. The “connected together” may be a direct connection, or an indirect connection, or connected together within two components. For general technicians in the field, it may be feasible to understand the specific meanings of the foregoing terms in this utility model under specific circumstances.
What may be described in detail in the above paragraphs may be this patent's fair implementation method. However, embodiments may be not be limited to the above-mentioned implementation method. Within the knowledge range of general technicians in this field, it is practicable to make variations without deviating from the tenet of embodiments.
ADDITIONAL NOTES AND EXAMPLESExample One may include a split electric skateboard comprising: a deck having a bottom surface and an upper surface to be engaged by a user during use of the split electric skateboard; a battery unit arranged on the bottom surface of the deck, the battery unit connected to a charging port; a first bracket arranged at a front of the deck; a second bracket arranged at a rear of the deck; driven wheels operatively connected to the first bracket; drive wheels operatively connected to the second bracket, the drive wheels including hub motors; a main control module arranged on the bottom surface of the deck and which is configured to control operation of the split electric skateboard, the main control module being operatively connected to the hub motors and the battery unit; an electric control box configured to cover the main control module, and which includes a power actuator arranged on the bottom surface of the deck which is operatively connected to the main control module; and a heat dissipator arranged on an aluminum substrate of the main control module.
Example Two may include the split electric skateboard of Example One, further comprising a remote control module operatively connected to the main control module and configured to remotely control operation of the split electric skateboard.
Example Three may include the split electric skateboard of Example One, wherein the drive wheels comprise tire beads configured to cover the hub motors.
Example Four may include the split electric skateboard of Example One, wherein the tire beads are fitted on a casing of the hub motors via a mating surface groove.
Example Five may include the split electric skateboard of Example One, further comprising an edge cover fixed to an external surface of a corresponding one of the hub motors.
Example Six may include the split electric skateboard of Example Five, wherein the edge cover is fixed to the external surface via a plurality of fastening screws.
Example Seven may include the split electric skateboard of Example One, further comprising casing components that include: a battery cover configured to cover the battery unit; dust cover arranged on the charging port; and the electric control box.
Example Eight may include the split electric skateboard of Example Seven, wherein the battery cover includes a through-hole to receive the charging port.
Example Nine may include the split electric skateboard of Example One, wherein the battery unit comprises a rechargeable battery unit that is configured to be recharged during manual use of the split electric skateboard.
Example Ten may include the split electric skateboard of Example One, further comprising sandpaper arranged on the upper surface of the deck.
Example Eleven may include a split electric skateboard comprising: a deck having a bottom surface and an upper surface to be engaged by a user during use of the split electric skateboard; a battery unit arranged on the bottom surface of the deck; driven wheels arranged at a front of the deck via a first bracket; drive wheels arranged at a rear of the deck via a second bracket, the drive wheels including hub motors; a main control module arranged on the bottom surface of the deck and which is configured to control operation of the split electric skateboard, the main control module being operatively connected to the hub motors and the battery unit; and a heat dissipator arranged on the main control module.
Example Twelve may include the split electric skateboard of Example Eleven, further comprising a remote control module operatively connected to the main control module and configured to remotely control operation of the split electric skateboard.
Example Thirteen may include the split electric skateboard of Example Eleven, wherein the drive wheels comprise tire beads configured to cover the hub motors.
Example Fourteen may include the split electric skateboard of Example Eleven, wherein the tire beads are fitted on a casing of the hub motors via a mating surface groove.
Example Fifteen may include the split electric skateboard of Example Eleven, further comprising an edge cover fixed to an external surface of a corresponding one of the hub motors.
Example Sixteen may include the split electric skateboard of Example Fifteen, wherein the edge cover is fixed to the external surface via a plurality of fastening screws.
Example Seventeen may include the split electric skateboard of Example Eleven, further comprising a battery cover configured to cover the battery unit.
Example Eighteen may include the split electric skateboard of Example Eleven, further comprising an electric control box configured to cover the main control module.
Example Nineteen may include the split electric skateboard of Example Eleven, wherein the battery unit comprises a rechargeable battery unit that is configured to be recharged during manual use of the split electric skateboard.
Example Twenty may include a split electric skateboard comprising: a deck; a battery unit arranged on the deck; driven wheels arranged at a front of the deck; drive wheels including hub motors arranged at a rear of the deck; a main control module arranged on the bottom surface of the deck and which is configured to control operation of the split electric skateboard, the main control module being operatively connected to the hub motors and the battery unit; and a heat dissipator arranged on the main control module.
The terms “coupled,” “attached,” or “connected” may be used herein to refer to any type of relationship, direct or indirect, between the components in question, and may apply to electrical, mechanical, fluid, optical, electromagnetic, electromechanical or other connections. In addition, the terms “first,” “second,” etc. are used herein only to facilitate discussion, and carry no particular temporal or chronological significance unless otherwise indicated.
Those skilled in the art will appreciate from the foregoing description that the broad techniques of the embodiments can be implemented in a variety of forms. Therefore, while the embodiments have been described in connection with particular examples thereof, the true scope of the embodiments should not be so limited since other modifications will become apparent to the skilled practitioner upon a study of the drawings, specification, and following claims.
LIST OF REFERENCE NUMERALS1—deck
2—battery unit
3—front bracket
4—driven wheels
5—charging port
6—battery cover
7—dust cover
8—power actuator
9—electric control box
10—heat dissipator
11—rear bracket
12—hub motors
13—drive tire beads
14—motor edge cover
15—fastening screws
16—main control module
17—remote control module
101—motor wire
102—motor main shaft
103—stator assembly
104—rotor assembly
201—right side cover (remote control module)
202—joystick (remote control module)
203—speed-regulating rod (remote control module)
204—power actuator (remote control module)
205—gear switch-over key (remote control module)
206—left side cover (remote control module)
207—light guide columns (remote control module)
208—forward/backward rotation switch-over key (remote control module)
209—printed circuit board (PCB) (remote control module)
2010—rechargeable lithium battery (remote control module)
Claims
1. A split electric skateboard, comprising:
- a deck having a bottom surface and an upper surface to be engaged by a user during use of the split electric skateboard;
- a battery unit arranged on the bottom surface of the deck, the battery unit connected to a charging port;
- a first bracket arranged at a front of the deck;
- a second bracket arranged at a rear of the deck;
- driven wheels operatively connected to the first bracket;
- drive wheels operatively connected to the second bracket, the drive wheels including hub motors;
- a main control module arranged on the bottom surface of the deck and which is configured to control operation of the split electric skateboard, the main control module being operatively connected to the hub motors and the battery unit;
- an electric control box configured to cover the main control module, and which includes a power actuator arranged on the bottom surface of the deck which is operatively connected to the main control module; and
- a heat dissipator arranged on an aluminum substrate of the main control module.
2. The split electric skateboard of claim 1, further comprising a remote control module operatively connected to the main control module and configured to remotely control operation of the split electric skateboard.
3. The split electric skateboard of claim 1, wherein the drive wheels comprise tire beads configured to cover the hub motors.
4. The split electric skateboard of claim 1, wherein the tire beads are fitted on a casing of the hub motors via a mating surface groove.
5. The split electric skateboard of claim 1, further comprising an edge cover fixed to an external surface of a corresponding one of the hub motors.
6. The split electric skateboard of claim 5, wherein the edge cover is fixed to the external surface via a plurality of fastening screws.
7. The split electric skateboard of claim 1, further comprising casing components that include:
- a battery cover configured to cover the battery unit;
- dust cover arranged on the charging port; and
- the electric control box.
8. The split electric skateboard of claim 7, wherein the battery cover includes a through-hole to receive the charging port.
9. The split electric skateboard of claim 1, wherein the battery unit comprises a rechargeable battery unit that is configured to be recharged during manual use of the split electric skateboard.
10. The split electric skateboard of claim 1, further comprising sandpaper arranged on the upper surface of the deck.
11. A split electric skateboard, comprising:
- a deck having a bottom surface and an upper surface to be engaged by a user during use of the split electric skateboard;
- a battery unit arranged on the bottom surface of the deck;
- driven wheels arranged at a front of the deck via a first bracket;
- drive wheels arranged at a rear of the deck via a second bracket, the drive wheels including hub motors;
- a main control module arranged on the bottom surface of the deck and which is configured to control operation of the split electric skateboard, the main control module being operatively connected to the hub motors and the battery unit; and
- a heat dissipator arranged on the main control module.
12. The split electric skateboard of claim 11, further comprising a remote control module operatively connected to the main control module and configured to remotely control operation of the split electric skateboard.
13. The split electric skateboard of claim 11, wherein the drive wheels comprise tire beads configured to cover the hub motors.
14. The split electric skateboard of claim 11, wherein the tire beads are fitted on a casing of the hub motors via a mating surface groove.
15. The split electric skateboard of claim 11, further comprising an edge cover fixed to an external surface of a corresponding one of the hub motors.
16. The split electric skateboard of claim 15, wherein the edge cover is fixed to the external surface via a plurality of fastening screws.
17. The split electric skateboard of claim 11, further comprising a battery cover configured to cover the battery unit.
18. The split electric skateboard of claim 11, further comprising an electric control box configured to cover the main control module.
19. The split electric skateboard of claim 11, wherein the battery unit comprises a rechargeable battery unit that is configured to be recharged during manual use of the split electric skateboard.
20. A split electric skateboard, comprising:
- a deck;
- a battery unit arranged on the deck;
- driven wheels arranged at a front of the deck;
- drive wheels including hub motors arranged at a rear of the deck;
- a main control module arranged on the bottom surface of the deck and which is configured to control operation of the split electric skateboard, the main control module being operatively connected to the hub motors and the battery unit; and
- a heat dissipator arranged on the main control module.
Type: Application
Filed: Nov 14, 2017
Publication Date: Nov 8, 2018
Inventor: Yuan JI (LiuAn City)
Application Number: 15/811,874
