KR20160065241A - Electromotive kick board - Google Patents

Abstract

Disclosed is an electromotive kick board capable of maintaining a constant speed automatically. According to one aspect of the present invention, provided is an electromotive kick board including: a handle part where a handle is formed at an upper part, and a brake lever to brake the rotation of a rear wheel is comprised at one side of the handle, and a handle stem combined to a front wheel is included at the lower part; an electric motor to deliver power to the rear wheel; a driving part to deliver rotary force of the electric motor to the rear wheel; a board frame part which has one end combined to the lower part of the handle stem, and has the other end combined to the driving member; and a control part maintaining the speed of the electromotive kick board within a constant range. The electromotive kick board can prevent an accident caused by overspeed by maintaining a constant speed.

Description

Electromotive kick board

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric kickboard having a power unit, and more particularly, to an electric kickboard capable of automatically maintaining a constant speed.

In general, a kickboard or a scooter is a traveling board which is used by a child or a young person as a means of short distance driving or playing, and is a traveling board for putting a foot on a footboard and forcing another foot to sprint the ground. And a handle and other members for adjusting the running direction. Such a traveling board is a mechanism that allows one to enjoy a sense of passion and sense of speed by driving a front and rear wheels while holding a pair of feet on the board frame member while adjusting the steering wheel and holding the other foot on the ground.

In particular, recently, a kickboard with a motor or an engine is mounted. In particular, an electric kickboard driven by a motor is driven by a battery or a battery power source as in the case of starting the vehicle. After that, a battery (battery) And the electric motor is driven by the supply so that the electric running can be performed. This electric type kickboard is equipped with a power transmission means for transmitting the rotational power of the electric motor to the rear wheels, enabling faster and more convenient movement and operation. It is not limited to children and adolescents, .

Korean Patent Publication No. 2002-0065260

The present invention provides an electric kickboard capable of preventing accidents due to overspeed by maintaining a constant speed.

According to an aspect of the present invention, there is provided an electric kickboard comprising: a handle formed at an upper end thereof; a brake lever for braking the rotation of a rear wheel on one side of the handle; and a handle An electric motor for transmitting power to the rear wheel, a driving unit for transmitting a rotational force of the electric motor to the rear wheel, a control unit coupled to the lower end of the handle stem at one end, And a control unit for maintaining the speed of the frame unit and the electric kickboard within a certain range.

In one embodiment, the control unit performs a PI control (proportional-integral control) based on the measured output of the electric motor and a measurement module for measuring the output of the electric motor to maintain the speed of the electric kickboard within a certain range And a control module for controlling the display device.

In one embodiment, the control unit further includes a motor controller for controlling an output of the electric motor, wherein the control module controls the motor controller to output a control signal, which is calculated through PI control based on the measured output of the electric motor, .

In one embodiment, the control unit may include a gyro sensor measuring a slope value of the electric kickboard relative to the ground surface, and a control module maintaining the speed of the electric kickboard based on the slope value measured.

According to another aspect of the present invention, there is provided an electric kickboard comprising a handle at an upper end thereof, a brake lever for braking the rotation of a rear wheel on one side of the handle, and a handle stem coupled to a lower end thereof, A driving unit for transmitting rotational force of the electric motor to the rear wheel; a driving unit for driving the rear wheels, the driving unit being coupled to a lower end of the handle stem at one end and the driving unit coupled to the other end, Wherein the control unit includes a measurement module for measuring an output of the electric motor, a gyro sensor for measuring an inclination value of the electric kickboard with respect to the ground surface, and a controller PI control (proportional-integral control) based on the output of the electric motor, The electric Kick Scooters comprising a control module to maintain the velocity of the motor-driven Kick Scooters into a range is provided on the basis of the value to cry.

The electric kickboard according to an embodiment of the present invention maintains a constant speed, thereby preventing an accident caused by overspeed.

BRIEF DESCRIPTION OF THE DRAWINGS A brief description of each drawing is provided to more fully understand the drawings recited in the description of the invention.
1 is an overall perspective view of an electric kickboard according to the present invention,
2 is an exploded perspective view showing the inside of a driving unit of an electric kickboard according to the present invention.
3 is a block diagram showing a schematic structure of a control unit for controlling the speed of an electric kickboard according to an embodiment of the present invention.
4 is a block diagram showing a schematic structure of a control unit for controlling the speed of an electric kickboard according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, the present invention will be described in detail with reference to the embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 1 is an overall perspective view of an electric kickboard according to the present invention. FIG. 2 is an exploded perspective view of a drive unit and a drive unit cover of an electric kick according to the present invention.

Referring to FIGS. 1 and 2, an electric kickboard according to an embodiment of the present invention includes a knob at an upper end thereof, and a handle (not shown) including a handle stem 24 at a lower end of which a front wheel 26 is rotatably coupled. (20). The handle 22 of the handle stem 24 may be provided in parallel with the handle 22 and may include a brake lever 42 for braking the rotation of the rear wheel. And can be connected to the brake 46 located in the driving portion 60 by the wire 44.

Meanwhile, the electric kick board can be fastened to the driving unit 60 including the rear wheel 58 at one end thereof. The driving unit 60 may be fastened to be detachable. The driving unit 60 may have a hollow portion for receiving a plurality of battery cells therein.

The electric kickboard includes an electric motor (53) for transmitting power to the rear wheel, a driving unit (60) for transmitting rotational force of the electric motor to the rear wheel, And a board frame 30 to which the driving member is coupled to the other end.

The driving unit 60 includes a rear wheel 58, a brake for braking the rear wheel 58, pulleys 54 and 56 mounted on the rotary shaft of the electric motor 53, pulleys 54 and 56, And a belt 57 for interlocking with the drive unit 60. The drive unit 60 may be stacked and protected by a cover formed with the electric switch button 52 protruded in a state of being engaged with the drive unit 60. [

The board frame part 30 has a lower end of the handle stem 24 at one end and a driving part 50 at the other end of which a rear wheel 58 is rotatably mounted and a brake 46 is engaged Can be combined. Here, the driving unit 60 may be formed integrally with the board frame unit 30 without being detachably coupled to the board frame unit 30. Alternatively, the driving unit 60 may be detachably coupled to the board frame unit 30, You may.

The brake 46 fixedly coupled to the frame 51 of the driving unit 60 is closely contacted with the outer circumferential surface of the rear wheel 58 in accordance with the operation of the brake lever 42 and is braked. At this time, it is needless to say that the brake may be replaced by a brake provided with a friction pad for braking the rear wheel 58 with frictional force.

The cover of the driving unit 60 is provided with a power switch 52 for supplying power to the motor 53 to the battery cell. The power switch 52 may be a switch such as a push button switch and a push-pull switch for operating by using the user's foot, but it is preferable to use a push switch that applies power only when the user pushes the switch.

A pulley 54 is fixedly coupled to the motor shaft of the driving unit 60 and a pulley 56 for engaging with a pulley 54 fixedly coupled to the motor shaft is fixedly coupled to the rotary shaft 55 of the rear wheel 58 . A one-way clutch 59 may be provided on the inner side of a selected one of the two pulleys 54 and 56. The one-way clutch 59 allows the rotational force of the motor 53 to be transmitted to the rotational force of the wheel (For example, when the rotational force of the wheel due to the rolling motion exceeds the rotational force of the motor), the driving force of the electric motor 53 is transmitted to the rear wheel 58 (58).

The electric kickboard may further include a controller for maintaining the speed of the electric kickboard within a predetermined range. Hereinafter, the controller according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4, respectively. .

3 is a block diagram showing a schematic structure of a control unit for controlling the speed of an electric kickboard according to an embodiment of the present invention.

Referring to FIG. 3, the controller 100 may include a measurement module 110, a control module 120, and a motor controller 130.

Herein, a module may mean a functional and structural combination of hardware for carrying out the technical idea of the present invention and software for driving the hardware. For example, the module may refer to a logical unit of a predetermined code and a hardware resource for executing the predetermined code, and it does not necessarily mean a physically connected code or a kind of hardware But can be easily deduced to the average expert in the field of the present invention.

The measurement module 11 can measure the output of the electric motor 53. [

The control module 12 may perform PI control based on the measured output of the electric motor 53 to maintain the speed of the electric kickboard within a predetermined range. The predetermined range may be within a maximum speed (for example, 10 km / h) at a preset minimum speed (for example, 0 km / h or 5 km / h).

Meanwhile, the motor controller 130 may control the output of the electric motor, and the control module 120 may control the control signal calculated through the PI control based on the measured output of the electric motor 53, Controller.

The control module 120 has a simple instruction and can be implemented as a RISC chip such as an AVR having a high operation speed. For example, the control module 120 may be implemented as an RISC chip such as an art mega 128. The motor controller 130 may be, for example, a BLDC controller.

The following code shows an example of an algorithm for the control module 12, which is implemented as an art mega 128, to generate a control signal.

ISR (TIMERO_OVF_vect)

 {

   TCNT = 256 - 16 // 1 msec interrupt

ADCSRA | = 0x40;

while (! (ADCSRA &0x10));

ADCSRA | = 0x10;

sensor_input = ADC;

err = Temp_ref - sensor_input

P_cont = Kp * err; // P Control

I_cont = I_cont + Ki * err; // I Control

if (I_cont> I_Limit) I_cont = I_Limit;

else if (I_cont <-I_Limit) I_cont = -I_Limit;

PI_cont = P_cont + I_cont;

if (PI_cont> PI_Limit) PI_cont = PI_Limit;

else if (PI_cont <-PI_Limit) PI_cont = -PI_Limit;

}

The control module 120 may transmit the control signal PI_cont generated by the algorithm to the motor controller 130.

4 is a block diagram showing a schematic structure of a control unit for controlling the speed of an electric kickboard according to another embodiment of the present invention.

Referring to FIG. 4, the controller 200 may include a gyro sensor 210 and a control module 220.

The gyro sensor 210 may measure a tilt value of the electric kickboard with respect to the ground surface.

The control module 220 may maintain a constant speed range of the electric kickboard based on the measured slope value. For example, the control module 220 may calculate the degree to which the electric kickboard is naturally accelerated by gravity based on the measured slope value, and may calculate the degree to which the electric kickboard is naturally accelerated by gravity, The output of the motor 53 can be controlled. For the latter, the controller 200 may further include the motor controller described above.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be.

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Should be interpreted as being included in.

Claims (5)

As an electric kickboard,
A handle portion having a handle at an upper end thereof, a handle portion having a brake lever for braking the rotation of a rear wheel on one side of the handle, and a handle stem to which a front wheel is coupled at a lower end;
An electric motor for transmitting power to the rear wheel;
A driving unit for transmitting rotational force of the electric motor to the rear wheel;
A board frame part coupled to a lower end of the handle stem at one end and coupled to the driving part at another end; And
And a control unit for maintaining the speed of the electric kickboard within a predetermined range.
The method according to claim 1,
Wherein,
A measurement module for measuring an output of the electric motor; And
And a control module that performs PI control based on the measured output of the electric motor to maintain the speed of the electric kickboard within a predetermined range.
3. The method of claim 2,
Wherein,
Further comprising a motor controller for controlling an output of the electric motor,
The control module includes:
And transmits the control signal calculated through the PI control based on the measured output of the electric motor to the motor controller.
The method according to claim 1,
Wherein,
A gyro sensor measuring an inclination value of the electric kickboard with respect to the ground surface; And
And a control module that maintains the speed of the electric kickboard within a certain range of speed based on the measured slope value.
As an electric kickboard,
A handle portion having a handle at an upper end thereof, a handle portion having a brake lever for braking the rotation of a rear wheel on one side of the handle, and a handle stem to which a front wheel is coupled at a lower end;
An electric motor for transmitting power to the rear wheel;
A driving unit for transmitting rotational force of the electric motor to the rear wheel;
A board frame part coupled to a lower end of the handle stem at one end and coupled to the driving part at another end; And
And a controller for maintaining the speed of the electric kickboard within a predetermined range,
Wherein,
A measurement module for measuring an output of the electric motor;
A gyro sensor measuring an inclination value of the electric kickboard with respect to the ground surface; And
A proportional-integral control based on the measured output of the electric motor, and a control module for keeping the speed of the electric kickboard within a certain range based on the measured slope value.

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