KR200229084Y1 - Electric kick board - Google Patents

Abstract

The present invention relates to an electric kickboard. It is fixed to the handlebar having a handle on the top and the vertical frame is installed on the front wheel at the bottom; A scaffold having a front end connected to the vertical frame and providing a plane; A rear wheel assembly which is installed at the rear end of the scaffold to support the rear end of the scaffold and generates rotational torque by receiving external power, and has a cylindrical shape and a wheel is provided on the outer circumference thereof; A battery for supplying electricity to the rear wheel assembly through a power line; And a switch installed between the battery and the rear wheel assembly to control supply of electricity flowing from the battery to the rear wheel assembly.

Electric kickboard of the present invention made as described above, by installing a battery-powered electric motor on the wheel of the kickboard, for example, even if one leg can not be used to move the kickboard and move relatively long distances without fatigue of the leg It can be used conveniently inside buildings such as university campuses, hospital corridors or large shops, and it can be used for other sports leisure and transportation.

Description

Electric kick board {Electric kick board}

The present invention relates to a kickboard mainly for children, and more particularly to an electric kickboard configured to be driven by the rotational force of the motor by mounting the motor on the kickboard.

Recently, the popular kickboard is light and small, so it is easy to handle, so children can ride freely. The kickboard includes a front wheel and a rear wheel and a handle for steering the footrest and the front wheel, and is configured to put one foot on the footrest and move the ground forward with the other foot.

On the other hand, the kickboard is used not only for children, but also for college students or office workers as a short distance means of transportation, and especially the students using the kickboard on the campus of the university without a proper means of the trend is increasing.

However, in the conventional kickboard, one foot must be placed on the footrest and the ground must be pushed by the force by pushing the ground with the other foot. For example, if one leg cannot be used, the kickboard cannot be used. In addition, if the moving distance is relatively long, you may run out of power while riding on the kickboard, and if there is an uphill road, there is a problem in that the kickboard cannot be realistically used.

The present invention has been made to solve the above problems, by installing a battery-powered electric motor on the wheel of the kickboard, for example, even if one leg can not be used to move on the kickboard, even relatively long distance without fatigue of the leg Its purpose is to provide an electric kickboard that is mobile and noise-free, which can be used in buildings such as university campuses, hospital corridors or large stores, and can be used for other sports leisure and transportation.

1 is a perspective view showing an electric kick board according to an embodiment of the present invention.

Figure 2 is a partial perspective view of the rear wheel frame fixed to the rear end of the kickboard.

Figure 3 is an exploded perspective view schematically showing the rear wheel assembly of the electric kickboard according to an embodiment of the present invention.

4 is a cross-sectional view taken along the line IV-IV of FIG. 1.

5 is a cross-sectional view taken along the line VV of FIG. 4.

Figure 6 is a perspective view showing another example of the electric kickboard according to an embodiment of the present invention.

7 is a perspective view showing another example of the electric kickboard according to an embodiment of the present invention.

8 is a view showing for explaining the circuit configuration of the electric kickboard according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

11: Vertical frame 13: Footrest

15: handlebar 17: switch

19: battery 21: battery cable

23: Jack 25: battery terminal

27: front wheel 29: rear wheel assembly

31: rear frame 33: power line

35: rubber wheel 37: support

39: Nut 41: Casing

43, 44: Female thread 45: Supporting protrusion

47: through-hole 49: inlet

51: permanent magnet 53: coil

55: stator 57: rotor

59: Drive Gear 61: Planetary Gear

63: ring gear 65: gear support shaft

67: Belt 71: Buckle

73: connecting member 75: hub motor

77: Handle 79: Extension

81: Inner passage 85: Hole

87: bearing

In order to achieve the above object, the present invention, the handle bar having a handle is fixed on the top and the vertical frame is installed on the front wheel at the bottom; A scaffold having a front end connected to the vertical frame and providing a plane; A rear wheel assembly which is installed at the rear end of the scaffold to support the rear end of the scaffold and generates rotational torque by receiving external power, and has a cylindrical shape and a wheel is provided on the outer circumference thereof; A battery for supplying electricity to the rear wheel assembly through a power line; And a switch installed between the battery and the rear wheel assembly to control supply of electricity flowing from the battery to the rear wheel assembly.

In addition, the rear wheel frame is fixed to the rear end of the footrest to install the rear wheel assembly to the footrest, the rear wheel assembly, the rubber wheel in contact with the ground on the outer periphery of the casing having a cylindrical shape; It is characterized in that it comprises a hub motor which is provided horizontally in the casing, both ends penetrate through the casing and fixed to the rear wheel frame, respectively, and rotate the casing.

The hub motor may include a stator having a coil having both ends fixed to the rear wheel frame through the casing and connected to the power line therein; Rotating by the electromagnetic force inside the stator has a rotary shaft having the same central axis as both ends of the stator, the rotor comprises a rotor fixed to the rotating shaft, the stator at least one meshing with the drive gear The planetary gear is rotatably installed, and an inner circumferential surface of the casing is provided with a ring gear meshing with the planetary gear. When power is supplied to the coil, rotational force of the driving gear is transmitted to the casing through the planetary gear and the ring gear. Rotation of the casing is characterized in that.

In addition, the battery is fixed to the vertical frame or scaffolding, the switch is installed in the handlebar, the power line is connected to the rear wheel assembly one end and the other end is connected to one terminal of the switch, the other terminal and the battery of the switch It is connected by a cable, characterized in that the battery cable is removable for the battery.

In addition, the battery is provided in a separate belt to supply power to the rear wheel assembly with the user wearing the belt, the switch is installed on the handlebar, the power line is connected to the rear wheel assembly one end and the other end of the switch It is connected to the terminal, the other terminal of the switch and the battery is connected by a battery cable, characterized in that the battery cable is removable for the battery.

In addition, the battery is provided with a battery terminal, the end of the battery cable is provided with a jack that is fitted to the terminal so that the battery cable is detachable with respect to the battery, the switch is driven at the time of the rear wheel assembly only when pressed as a normally open switch This is characterized in that it is made.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a perspective view showing an example of an electric kickboard according to an embodiment of the present invention.

Referring to the drawings, the motorized kickboard according to the present embodiment includes a vertical frame 11, a footrest 13 connected to the vertical frame 11 and providing a flat surface, and a front wheel supporting the footrest 13. 27) and rear wheel assembly (29).

The vertical frame 11 takes the form of a hollow pipe, and an insertion hole 49 is formed in the outer circumference thereof. The insertion port 49 is a hole provided to be connected to the switch 17 to be raised after the power line 33 to be described later is inserted into the vertical frame (11). The handle bar 15 is horizontally fixed to the upper end of the vertical frame (11). Like the vertical frame 11, the handle bar 15 is a steering means made of hollow pipes, and left and right handles 77 are fitted at both ends.

The handle bar 15 is provided with a switch 17. The switch 17 is a normally open switch which is always in an off state and is turned on by a user to cut off or connect a circuit between the battery 19 and the rear wheel assembly 29 which will be described later. Do it. To this end, one terminal of the switch 17 is connected to a power line 33 to be described later, and the other terminal is connected to the battery cable 21.

Preferably, a button (not shown) for selectively connecting both terminals in the switch 17 is elastically supported to the outside by a spring (not shown), so that the power line 33 and the battery cable 21 are pressed only when the button is pressed. ) Connection is made and the power line 33 and the battery cable 21 are automatically cut off by the restoring force of the spring.

In addition, the switch 17 is preferably positioned on the side of the one-side handle 77 so that the thumb can be pressed.

The battery cable 21 is an electric wire connected internally to the terminal of the switch 17 in the handle bar 15, and a jack 23 is provided at an end thereof. The jack 23 is a conventional jack that is inserted into the battery terminal 25 provided in the battery 19 so that electricity of the battery 19 is supplied to the rear wheel assembly 29.

On the other hand, the battery 19 is fixed to the vertical frame (11). The battery is a rechargeable battery, the capacity of which may vary depending on the embodiment, but it is preferable to use a battery having a capacity that can be usually charged at home.

The battery 19 is provided with a battery terminal 25. The battery terminal 25 is located on the side of the switch 17 in order to easily plug in the jack 23 as a terminal from which electricity of the battery is drawn out. Meanwhile, since the jack 23 may be inserted into or detached from the battery terminal 25, the user may unplug the jack 23 from the battery terminal 25 to prevent discharge of the battery after using the kickboard. good. If you want to use the kickboard again plug the jack 23 into the battery terminal 25 is of course used.

Front wheels 27 provided at the lower end of the vertical frame 11 is a known rubber wheel to switch the progress of the kickboard according to the handle bar 15 to the left and right.

The footrest 13 is a flat rectangular plate on which a person climbs, and the front end is connected to the vertical frame 11, and the rear wheel assembly 29 is installed at the rear end. The vertical frame 11 and the footrest 13 are connected by a connection member 73. The connecting member 73 is a member that is pinned to the footrest 13 in a state fixed to the vertical frame 11, and a through hole 47 through which the power line 33 penetrates is formed in the center thereof.

The rear wheel assembly 29 generates a driving force for moving the electric kickboard of the present embodiment. It takes the form of a substantially cylindrical and is connected to the footrest 13 by supporting the rear wheel frame 31 on both sides. The rear wheel frame 31 is a pair of steel that extends to the rear of the footrest 13 with one end fixed to the bottom surface of the footrest 13, as shown in FIG. 37) is provided. The support 37 functions to support the stator (55 of FIG. 4) to be rotated to be described later.

The rear wheel assembly 29 has a cylindrical casing (41 in FIG. 3) having a rounded circumference and flat sides, a hub motor (75 in FIG. 4) provided inside the casing 41, and an outer circumference of the casing 41. It is configured to include a rubber wheel 35 is fixed to.

In addition, both ends of the hub motor 75 is provided with a support protrusion 45 having a rectangular shape as shown in FIG. 3, wherein the support protrusion 45 is inserted into the support hole 37 of the rear wheel frame 31. do. Therefore, the rear wheel assembly 29 may be supported by the rear wheel frame 31. Detailed configuration and operation of the rear wheel assembly 29 will be described later.

The rubber wheel 35 is a driving wheel that is firmly fixed to the outer circumference of the casing 41 to push the ground as the casing rotates in contact with the ground so that the kickboard can move.

Meanwhile, the power line 33 for supplying electricity to the hub motor 75 has a connection member 73 passing through the lower portion of the scaffold 13 with one end connected to a coil (53 in FIG. 4) in the rear wheel assembly 29. After passing through the through-hole 47 of the vertical frame 11 is raised through the internal space of the switch 17 installed in the handle bar 15 is connected internally.

Since the power line 33 passes through the through hole 47 of the connecting member 73, the power line 33 is not stretched downward and is positioned in the vertical frame 11 through the insertion port 49 of the vertical frame 11. The exposure can be minimized to keep it clean. According to an embodiment, the power line 33 may be tightly tied to the footrest 13 or the connection member 73 by a known tie band.

Figure 2 is a partial perspective view showing a rear wheel frame fixed to the rear end of the electric kickboard.

As shown, the rear wheel frame 31 is a pair of two and the ends are opened with respect to each other to accommodate the rear wheel assembly 29 in between. In addition, as described above, the square support 37 provided at the end of the rear wheel frame 31 accommodates the square support protrusions 45 at both ends of the hub motor stator (55 in FIG. 4) to support the stator so as not to rotate. to be.

Figure 3 is an exploded perspective view schematically showing the rear wheel assembly of the electric kickboard according to an embodiment of the present invention.

Referring to the drawings, it can be seen that the rubber wheel 35 is fixed to the center outer circumference of the rear wheel assembly 29, the casing 41. Installation method, size and shape of the rubber wheel 35 can be modified according to the embodiment, of course.

In addition, a circular hole 85 is formed in both planar portions of the casing 41, and both end portions of the stator 55 of the hub motor (75 of FIG. 4) extend outward through the hole 85. Here, both end portions are integral with the stator 55 and have a rounded cross section (79 of FIG. 4), a rectangular support protrusion 45, and female threads 43 and 44. ). Both end portions of the stator 55 have the same rotation center axis, of course.

In addition, the extension portion 79, the support protrusion 45 and the female screw (43, 44) is formed integrally, the extension portion 79, the support protrusion 45 and the female screw 44 on one side of the inside As in 4, there is an internal passage.

As a result, as described above, since the support protrusion 45 is fixed by the rear wheel frame 31 and the extension portion 79 penetrates the hole 85, the stator 55 does not rotate even when the casing 41 rotates. .

Nuts 39 are coupled to the female threads 43 and 44 on both sides. The nut 39 is coupled to the female screws 43 and 44 to support the rear wheel frame 31 toward the casing 41 so that the rear wheel assembly 29 is not separated from the rear wheel frame 31. The nut 39 on one side of the nut passes through the power line 33 connected to the coil (53 in FIG. 4).

4 is a cross-sectional view taken along the line IV-IV of FIG. 1.

As shown, the rubber wheel 35 is fixed to the center of the outer circumference of the casing 41 having a cylindrical shape. In addition, holes 85 are formed in both side surfaces of the casing 41 so that both side extension portions 79 of the stator 55 extend through the holes 85 to the outside of the casing 41 and then the rear wheel frame 31. Is supported. At this time, the outer circumferential surface of the extension portion 79 supports the casing 41 through the bearing 87.

In addition, as described above, the stator 55 installed inside the casing 41 does not rotate because both ends are fixed to the square support (37 in FIG. 2) of the rear wheel frame 31.

The stator 55 has a coil 53 wound therein like a known motor and accommodates the rotor 57. The rotor 57 is fixed to the permanent magnet 51 is rotated by the electromagnetic induction principle when electricity is applied to the coil 53.

The power line 33 for supplying electricity to the coil 53 is connected to the coil 53 through an inner passage 81 formed in the stator 55. The inner passage 81 is a passage connected to the coil through the female screw 44 and the support protrusion 45 and the extension portion 79 on one side, and is formed during the manufacture of the stator 55.

On the other hand, the stator 55 is provided with two gear support shaft (65). The gear support shaft 65 is a circular shaft, integral with the stator 55, and a planetary gear 61 is fitted to each outer circumference. In addition, a bearing (not shown) is installed between the gear support shaft 65 and the planetary gear 61 so that the planetary gear 61 rotates smoothly with respect to the gear support shaft 65. The number of the gear support shaft 65 and the planetary gear 61 may of course vary depending on the embodiment.

The drive gear 59 is fixedly coupled to the rotating shaft of the rotor 57. The drive gear 59 is fixed to the rotating shaft of the rotor 57 and meshes with the planetary gear 61.

In addition, a ring gear 63 is provided on the inner circumferential surface of the casing 41. The ring gear 63 meshes with the planetary gear 61 as a gear fixed to the inner circumferential surface of the casing 41. Accordingly, the rotating torque of the drive gear 59 is transmitted to the ring gear 63 through the planetary gear 61 so that the casing 41 rotates. That is, when electricity is supplied to the coil 53, the casing 41 is rotated.

5 is a cross-sectional view taken along the line VV of FIG. 4.

As shown, the planetary gears 61 are located on opposite sides of the drive gear 59 fixed to the rotor 57, and the ring gear 63 is located outside the planetary gear 61. It's in congruence. The planetary gear 61 is rotatably supported by the gear support shaft 65 of the stator 55 to transmit the rotational force of the drive gear 59 to the ring gear 63. That is, since the planetary gear 61 does not rotate but only rotates in place, when the drive gear 59 rotates in the direction of arrow a, the ring gear 63 rotates in the direction of arrow b.

6 is a perspective view showing another example of the electric kickboard according to an embodiment of the present invention.

The same reference numerals as the above reference numerals denote the same members having the same function.

Referring to the drawings, it can be seen that the battery 19 is installed on the scaffold (13). Thus, by installing the battery 19 to the footrest 13 will be able to move the entire center of gravity to the bottom. According to an exemplary embodiment, the position of the battery 19 may be fixed to the bottom surface of the footrest 13 or may be installed at the rear side of the footrest 13.

7 is a perspective view showing another example of the electric kickboard according to an embodiment of the present invention.

As shown, it can be seen that the battery 69 is provided in a separate belt 67 instead of being fixed to the kickboard. The belt 67 is a belt worn by a person riding a kickboard by fastening the buckle 71 to the waist. The battery terminal 25 is also provided on the outer surface of the battery 69 provided in the belt 67. Therefore, when the user presses the switch 17 while the belt 67 is put on the waist and the jack 23 is inserted into the battery terminal 25, the kickboard moves.

8 is a view showing a circuit configuration of the electric kickboard according to an embodiment of the present invention.

Referring to the drawing, the power line 33 connects the rear wheel assembly 29 and one terminal of the switch 17, and the other terminal of the switch 17 and the battery 19 are connected by the battery cable 21. have. On the other hand, since the battery 19 is provided with a battery terminal 25 as described above, the battery cable 21 and the battery 19 can be easily separated or connected when necessary.

The switch 17 is a normal normally open switch, which is normally open and connects both terminals as it is pushed by an external force.

Operation of the electric kickboard of the present invention made as described above is made as follows.

First, the jack 23 of the battery cable 21 is inserted into the battery terminal 25 in order to use the electric kickboard. As the battery 19 and the battery cable 21 are connected in this way, the preparation for driving the rear wheel assembly 29 is completed. At this time, if the battery is a battery that is provided in the belt 67 as shown in Figure 7, of course, the user must first wear the belt 67.

When the switch 17 is pressed in this state, electricity of the battery 19 is transferred to the coil (53 in FIG. 4) in the rear wheel assembly 29 through the battery cable 21, the switch 17, and the power line 33. As described above, when electricity is supplied to the coil 53, the rotor 57 rotates according to the principle of electromagnetic induction. When the rotor 57 rotates, the rotational force of the rotor 57 is transmitted to the casing 41 through the drive gear 59, the planetary gear 61, and the ring gear 63 to rotate the casing 41. . Since the stator 55 is fixedly supported by the rear wheel frame 31, the casing 41 rotates with respect to the rear wheel frame 31. Since the rubber wheel 35 is fixed to the outer circumference of the casing 41, the kickboard is advanced.

As described above, if the hand is released from the switch 17 while moving on the kickboard, the operation of the rear wheel assembly 29 may be stopped and the kickboard may be raised.

The present invention has been described in detail through specific embodiments, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. In addition, in the present embodiment, the driving wheel is installed behind the scaffolding, but according to the embodiment, it can be manufactured as a front wheel driving type.

In addition, as the battery is gradually miniaturized, the installation position of the battery may be changed in various ways. In addition to the belt, for example, the battery may be provided in a user's backpack or pocket of clothes.

Electric kickboard of the present invention made as described above, by installing a battery-powered electric motor on the wheel of the kickboard, for example, even if one leg can not be used to move the kickboard and move relatively long distances without fatigue of the leg It can be used conveniently inside buildings such as university campuses, hospital corridors or large shops, and it can be used for other sports leisure and transportation.

Claims (6)

A handle bar having a handle at the top thereof and a vertical frame at which the front wheel is installed at the bottom thereof; A scaffold having a front end connected to the vertical frame and providing a plane; A rear wheel assembly which is installed at the rear end of the scaffold to support the rear end of the scaffold and generates rotational torque by receiving external power, and has a cylindrical shape and a wheel is provided on the outer circumference thereof; A battery for supplying electricity to the rear wheel assembly through a power line; And a switch disposed between the battery and the rear wheel assembly to control a supply of electricity flowing from the battery to the rear wheel assembly. The method of claim 1, The rear wheel frame is fixed to the rear end of the footrest to install the rear wheel assembly on the footrest, The rear wheel assembly may include a casing having a cylindrical shape fixed to a rubber wheel in contact with the ground on an outer circumference thereof; An electric kickboard, comprising: a hub motor horizontally provided inside the casing, both ends penetrating through the casing, respectively fixed to the rear wheel frame, and rotating the casing. The method of claim 2, The hub motor includes: a stator having a coil having both ends fixed to the rear wheel frame through the casing and connected to the power line therein; Rotating by the electromagnetic force inside the stator has a rotation axis having the same central axis as both ends of the stator, and includes a rotor having a drive gear fixed to the rotation shaft, The stator is provided so that at least one planetary gear that engages with the drive gear is rotatable, and a ring gear that engages with the planetary gear is provided on an inner circumferential surface of the casing. An electric kickboard characterized in that the casing is rotated by being transmitted to the casing through the planetary gear and the ring gear. The method of claim 1, The battery is fixed to a vertical frame or scaffolding, the switch is installed in the handlebar, the power line is connected to the rear wheel assembly one end and the other end is connected to one terminal of the switch, the other terminal and the battery of the switch to the battery cable Electric kickboard, characterized in that connected by the battery cable is removable for the battery. The method of claim 1, The battery is provided in a separate belt to supply power to the rear wheel assembly while the user wears the belt, the switch is installed in the handlebar, the power line is connected to the rear wheel assembly one end and the other end and the other end of the switch And the other terminal of the switch and the battery are connected by a battery cable, wherein the battery cable is removable from the battery. The method according to claim 4 or 5, The battery terminal is provided on the battery so that the battery cable is detachable with respect to the battery, and an end of the battery cable is provided with a jack fitted to the terminal, and the switch is driven at all times when the switch is pressed as a normally open switch. Electric kickboard, characterized in that.