KR101733206B1 - Electric scooter having removal body structure - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric scooter having a detachable body structure, and more particularly to an electric scooter having a detachable body structure having a structure in which a base frame and a rear wheel portion can be detachably connected to each other.
An electric scooter having a detachable body structure according to the present invention comprises: a base frame; A front wheel having a front wheel rotatable with respect to the ground on the front side of the base frame; A rear wheel having a rear wheel rotatable with respect to the ground on the rear side of the base frame; A steering angle adjusting unit for adjusting a steering angle of the front wheel or the rear wheel by a user's operation; A driving unit for rotating the front wheel or the rear wheel by a power source; Wherein the rear wheel portion includes a rear wheel body having a rear wheel connected to a lower portion thereof and a front portion connected to a rear side of the base frame, Are connected to each other in a detachable manner.

Description

ELECTRIC SCOOTER HAVING REMOVAL BODY STRUCTURE,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric scooter having a detachable body structure, and more particularly to an electric scooter having a detachable body structure having a structure capable of detachably connecting a base frame and a rear wheel portion.

In general, an electric scooter drives a motor by a battery, and can be easily operated as a moving means for moving, so that anyone can learn easily, so that a person with a disability and an elderly person often use it.

On the other hand, the electric scooter is mostly a two-wheel system, and a three-wheel system is disclosed in Korean Patent Publication No. 10-2011-0093171.

However, in the prior art, there is a problem in that the electric scooter is integrally formed, so that it takes a lot of volume when mounted on a vehicle or is impossible to mount on a vehicle due to a volume problem.

It is an object of the present invention to provide an electric scooter having a detachable body structure in which a base frame and a rear wheel portion are detachably connected to each other .

To achieve the above object, an electric scooter having a detachable body structure according to the present invention comprises: a base frame; A front wheel having a front wheel rotatable with respect to the ground on the front side of the base frame; A rear wheel having a rear wheel rotatable with respect to the ground on the rear side of the base frame; A steering angle adjusting unit for adjusting a steering angle of the front wheel or the rear wheel by a user's operation; A driving unit for rotating the front wheel or the rear wheel by a power source; Wherein the rear wheel portion includes a rear wheel body having the rear wheel connected to a lower portion thereof and the front portion thereof connected to a rear side of the base frame, Are connected to each other in a detachable manner.

In the electric scooter having the detachable car body structure according to the present invention, the rear wheel body is provided with a hinge shaft which is long in the lateral direction on the front side, and protrudes forward at an upper position of the hinge shaft of the hinge, The base frame having a hook formed in a shape that can be hooked to the hooking hinge shaft on the rear side and a hooking hook formed on the hooking shaft in a state in which the hooking hook is hooked on the hooking shaft, A rear wheel coupling housing having a shape that allows the fitting protrusion to be inserted and coupled when the coupling protrusion is pivoted to the rear wheel coupling housing, And a lock pin protruding toward the lock pin insertion hole and fixing the rear wheel coupling housing and the fitting protrusion to each other And a gong.

Further, the electric scooter having a detachable body structure according to the present invention is configured such that when the fitting protrusion and the rear wheel coupling housing are coupled to each other, electric wiring is connected between the base frame and the rear wheel, do.

With the above construction, the electric scooter having the detachable car body structure according to the present invention can be mounted on the vehicle while the base frame and the rear wheel part are separated from each other and can be moved, and the base frame and the rear wheel part can be easily combined There are advantages to be able to.

1 is a front perspective view of an electric scooter according to an embodiment of the present invention;
2 is a rear perspective view of an electric scooter according to an embodiment of the present invention;
3 is a perspective view of a rear wheel steering unit according to an embodiment of the present invention.
4 is a block diagram of a main part of an electric scooter according to an embodiment of the present invention.
5 is a conceptual diagram of a normal traveling mode according to an embodiment of the present invention.
6 is a conceptual diagram of a rotating mode according to an embodiment of the present invention.
7 is a conceptual diagram of a steering interlocking mode according to an embodiment of the present invention.
8 is a perspective view of a main part of a rear wheel according to an embodiment of the present invention.
9 is a front view of a main portion of a rear wheel according to an embodiment of the present invention;
10 is a perspective view of a tilting angle adjusting unit according to an embodiment of the present invention.
11 is a side view of a tilting state of an electric scooter according to an embodiment of the present invention.
Fig. 12 is a perspective view showing a detachable structure of an electric scooter according to an embodiment of the present invention. Fig.
13 is a cross-sectional view of a driving drive unit according to an embodiment of the present invention

Hereinafter, an electric scooter according to the present invention will be described in detail with reference to embodiments shown in the drawings.

FIG. 1 is a front perspective view of an electric scooter according to an embodiment of the present invention, FIG. 2 is a rear perspective view of an electric scooter according to an embodiment of the present invention, FIG. 3 is a rear- FIG. 5 is a conceptual diagram of a normal traveling mode according to an embodiment of the present invention, and FIG. 6 is a perspective view of an embodiment of the present invention FIG. 7 is a conceptual diagram of a steering interlocking mode according to an embodiment of the present invention, FIG. 8 is a perspective view of a main portion of a rear wheel according to an embodiment of the present invention, FIG. 9 is a cross- 10 is a perspective view of a tilting angle adjusting unit according to an embodiment of the present invention, FIG. 11 is a side view of a tilting state of an electric scooter according to an embodiment of the present invention, FIG. 12 Of the present invention Is a perspective view showing a detachable structure for an electric scooter according to the embodiment, Figure 13 is a cross-sectional view of the running drive unit according to one embodiment of the present invention.

1 to 13, an electric scooter according to an embodiment of the present invention includes a base frame 10, a front wheel 20, a rear wheel 30, a steering angle adjuster 40, A driving unit 60, a mode selection unit 70, and a driving control unit 80. The control unit 50 includes a control unit 50, a driving unit 60, a mode selection unit 70,

The base frame 10 serves as a skeleton of the electric scooter according to the present invention and includes a fork support plate 11, a post connection plate 12, a locking hook 13, a rear wheel coupling housing 14, A lock pin 15, a seat 16, and a foot plate 17. [0031]

The fork support plate 11 is horizontally formed on the front side of the base frame 10 so that the fork 414 on which the front wheel 21 is mounted is rotatably supported for steering.

The post connection plate 12 is bent at both ends of the fork support plate 11 and extends upward so that the handle post cover 51 of the tilting angle control unit 50, which will be described later, .

The hooking hook 13 is formed to be hooked on a hooking hinge shaft 321 formed on the front side of the rear wheel body 32 from the rear side of the base plate 10.

The rear wheel coupling housing 14 is configured such that the base frame 10 or the rear wheel portion 30 is engaged with the engagement hinge shaft 321 in a state in which the engagement hook 13 is engaged with the engagement hinge shaft 321, The fitting protrusion 322 protruding in front of the rear wheel body 32 is inserted and engaged.

 The lock pin 15 is supported on the upper surface of the rear wheel coupling housing 14 and is inserted into the rear wheel coupling housing 14 by an external force in a state where the fitting projection 322 is inserted into the rear wheel coupling housing 14, And the rear wheel coupling housing 14 and the fitting protrusion 322 are fixed to each other.

In the present invention, when the fitting protrusions 322 and the rear wheel coupling housing 14 are coupled with each other, the electric wiring is formed between the base frame 10 and the rear wheel portion 30 do.

12, the rear side of the base frame 10 and the front side of the rear wheel body 32 are detachable from each other due to the organic coupling relationship of the components as described above, So that the base frame 10 and the rear wheel part 30 can be mounted on the vehicle while being separated from each other, and the base frame 10 and the rear wheel part 30 can be easily moved So that they can be used in combination.

The seat 16 is configured to allow a user to sit, and the footrest 17 is configured to put a user's foot on the road.

The front wheel 20 has a front wheel 21 rotatably rotatable relative to the ground on the front side of the base frame 10.

The steering angle of the front wheel 21 is adjusted by the front wheel steering unit 41 described later.

The rear wheel unit 30 includes a rear wheel 31 rotatably rotatable with respect to the ground on the rear side of the base frame 10.

The steering angle of the rear wheel 31 is regulated by a rear wheel steering unit 42 to be described later.

An electric scooter according to an embodiment of the present invention includes a front wheel 21 and a rear wheel 31. The rear wheel 311 includes a rear wheel 311 and a rear wheel 312, .

The first rear wheel 311 and the second rear wheel 312 are spaced apart from each other in a direction intersecting the longitudinal direction of the base frame 10 and are disposed below the rear ends of the rear body 32.

The rear wheel portion 30 includes a rear wheel body 32, a suspension 33, and a rotation restricting stopper 34. [

The rear wheel body 32 is connected to the rear side of the base frame 10 and functions as a support for the suspension 33 to be connected thereto.

12, the rear wheel body 32 according to an embodiment of the present invention includes a hinge shaft 321 which is long in the left and right direction on the front side, And a fitting protrusion 322 protruding forward from the base frame 10 and formed with a locking pin insertion hole 322a is detachably connected to the rear side of the base frame 10, The detailed description thereof will be omitted.

In addition, in the embodiment of the present invention, the components constituting the rear wheel steering unit 42 shown in FIG. 3 are built in the rear wheel body 32.

The suspension 33 absorbs an impact from the road surface and connects the rear wheel 31 to the rear wheel body 32. Referring to FIGS. 8 and 9, the suspension 33 includes a knuckle 331, an upper arm 332, A lower arm 333, a pivot housing 334, a shock absorber 335, and a coil spring 336.

The upper knuckle 331 is configured to mount the rear wheel 31 and the upper arm 332 and the lower arm 333 are hingedly connected to the upper and lower ends, respectively.

One end of the upper arm 332 is hingedly connected to the knuckle 331 on the rotational axis of the rear wheel 31 mounted on the knuckle 331.

One end of the lower arm 333 is hingedly connected to the knuckle 331 below the rotational axis of the rear wheel 31 mounted on the knuckle 331.

That is, the suspension 33 according to an embodiment of the present invention is a double wishbone type suspension 33 that is provided with the upper arm 332 and the lower arm 333 to ensure a comfortable ride feeling .

The upper arm 332 and the lower arm 333 are hingedly connected to the other ends of the upper arm 332 and the upper body is rotatably connected to the rear wheel body 32 by a pivot shaft 421 .

The pivot housing 334 according to an embodiment of the present invention includes a horizontal portion 334a formed vertically to the rear wheel pivot shaft 421 at an upper end to which the rear wheel pivot shaft 421 is connected, A vertical extension part 334b which is bent and extended downward from one end of the vertical extension part 334a and to which the upper end of the shock absorber 335 is connected; And an upper hinge portion 334c and a lower hinge portion 334d to which the other ends of the arms 333 are hinge-connected, respectively.

The pivot housing 334 has the rear wheel 31 disposed at a lower portion of the horizontal portion 334a and the vertical extension portion 334b disposed at an inner side of the rear wheel 31, And the lower hinge portion 334c and the lower hinge portion 334d protrude from the vertical extension portion 334b in a direction opposite to the direction in which the rear wheel 31 is disposed.

The suspension 33 according to the embodiment of the present invention can steer the rear wheel pivot shaft 421 with the center of rotation while the upper hinge portion 334c and the lower hinge portion 334c, And the protruding portion 334d is protruded to one side of the vertical extension portion 334b. Thus, the double wishbone type suspension structure can be maintained at the most compact size.

The lower end of the shock absorber 335 is connected to the lower arm 333 and the upper end of the shock absorber 335 is fixed to the pivot housing 334.

By adopting a structure in which the upper end of the shock absorber 335 is fixed to the pivot housing 334, the suspension 33 according to an embodiment of the present invention is capable of steering the rear wheel pivot shaft 421 .

The coil spring 336 is installed to surround the shock absorber 335.

The rotation restricting stopper 34 is disposed between the rear wheel body 32 and the horizontal portion 334a of the pivot housing 334 so that the pivot housing 334 rotates the rear wheel pivot shaft 421 at a predetermined angle The stopper protrusion 341 protruded upward from the horizontal portion 334a of the pivot housing 334 and the stopper protrusion 341 protruding upward from the lower portion 334a of the rear wheel body 334, And the stopper protrusion 341 is formed in a shape that allows the stopper protrusion 341 to be caught.

The steering angle adjusting unit 40 is configured to adjust the steering angle of the front wheel 21 or the rear wheel 31 by a user's operation. In the embodiment of the present invention, the front wheel steering unit 41, the rear wheel steering unit 42).

The front wheel steering unit 41 is configured to adjust the steering angle of the front wheel 21 so that the front wheel 21 is rotatably supported at the lower end of the front wheel steering unit 41, A handle post 415 connected to the upper end of the fork 414 at a lower end to extend upward and a steering post 415 extending upward from the fork 414, A handle 412 connected to the upper end of the handle post 415 so as to be able to adjust the steering angle of the front wheel 21 from a rotational amount of the front wheel steering shaft 411 directly or indirectly connected to the front wheel steering shaft 411, And a front wheel steering angle detecting sensor 413 for detecting the steering angle.

The handle post 415 may be tilted back and forth with respect to the longitudinal direction of the base frame 10 by a user's operation and a lower end of the handle post 415 may be connected to the fork 414 to transmit rotational force to the fork 414. [ And is connected to the upper end portion and the universal joint 416.

The user can easily adjust the steering angle of the front wheel 21 by the configuration of the front wheel steering unit 41 as described above and can adjust the steering angle of the front wheel 21 by the electric power .

The rear wheel steering unit 42 is configured to adjust the steering angle of the rear wheel 31. In the embodiment of the present invention, as shown in FIG. 3, the rear wheel steering unit 42 is connected to a rear wheel pivot shaft 421 by a belt 424, A rear wheel steering motor 422 capable of rotating the pivot shaft 421 and a rear wheel steering motor 422 directly or indirectly connected to the rear wheel pivot shaft 421 to detect a steering angle of the rear wheel 31 from a rotational amount of the rear wheel pivot shaft 421, And a rear wheel steering angle sensor 423 for detecting the rear wheel steering angle.

The rear wheel 31 is configured to be able to adjust the steering angle of the rear wheel 31 by means of the electric power by the configuration of the rear wheel steering unit 42. In an embodiment of the present invention, And a second rear wheel 312. The first rear wheel 311 and the second rear wheel 312 are each configured to be able to adjust the steering angle.

The tilting angle adjusting unit 50 is configured to fix and unlock the handle post 415 which is connected to the fork 414 by a universal joint 416 and is tilted at a predetermined angle. In an embodiment of the present invention, As shown in Fig. 10, includes a handle post cover 51, a pin insertion hole 52, a tilting guide hole 53, a pin releasing ring 54, and a QR lever 55 .

The handle post 41 is wrapped around the handle post 415 so that the handle post 415 can be tilted back and forth integrally with the handle post 415 without constraining the left and right rotation of the handle post 415, And the tilting hinge axis H is hingedly connected to the tilting hinge 12 at the center of rotation.

The pin insertion hole 52 is formed to pass through the post connection plate 12 or the handle post cover 51 with a certain distance from the tilting hinge axis H. In this embodiment, Is formed on the post connection plate (12).

The tilting guide hole 53 may be formed in the post connecting plate 12 or the post connecting plate 12 in which the pin insertion hole 52 is not formed along the rotational locus of the pin insertion hole 52 when the handle post 415 is tilted back and forth And is formed on the handle post cover 51 in a configuration of the handle post cover 51 according to an embodiment of the present invention.

The insertion pin 54 passes through the pin insertion hole 52 and the tilting guide hole 53 and is fastened.

The pin release claw 55 is fastened to one end of the insertion pin 54 so that the insertion pin 54 is not released.

The QR lever 56 is fastened to the other end of the insertion pin 54 and is pressed against the post connection plate 12 and the handle post cover 51 by the user's operation, .

The user can easily adjust the tilting angle of the handle post 415 by the configuration of the tilting angle adjuster 50 as described above to adjust the position of the handle 412 in accordance with the body of the user, As shown in FIG. 11, the handle post 415 is folded to minimize the volume, thereby facilitating mounting or storage on the vehicle.

The travel driving unit 60 is configured to rotate the front wheel 21 or the rear wheel 31 by a power source such as a battery (not shown) built in the base frame 10, And includes an in-wheel motor 61 and a heat dissipating means 62 as shown in Fig.

The in-wheel motor 61 has a stator 611 fixed to a shaft of the front wheel 21 or the rear wheel 31 for rotation and a rotor 612 rotating around the stator 611. The front wheel 21 Or the rim wheel of the rear wheel 31 is connected.

A plurality of coils are arranged in the circumferential direction of the stator 611 and a plurality of magnets are arranged in the circumferential direction of the rotor 612.

When electric power is sequentially supplied to the coils of the stator 611, a magnetic field is generated between the coils and the magnets to generate a torque, that is, a motor torque, The front wheel 21 or the rear wheel 31 are integrally rotated so that driving can be generated between the front wheel 21 and the road surface.

12 and 13, the heat dissipating means 62 includes a heat dissipating fin 621, a blowing fan 622, and a blowing fan 622. The heat dissipating means 621 is configured to dissipate heat generated in the in- ).

The radiating fins 621 are configured such that a plurality of the radiating fins 621 are radially spread from the center on the rim wheel and the protrusions are air-cooled by being in contact with air.

The blower fan 622 is configured to cool the in-wheel motor 61 by blowing air to a gap between the stator 611 and the rotor 612. In an embodiment of the present invention, The air induction slope is formed in the rotor 612 so that the radiating fin 621 blows air to the gap between the stator 611 and the rotor 612 when the rim wheel is rotated.

The front wheel 21 or the rear wheel 31 can be driven with a simple structure by adopting the in-wheel motor 61 as the traveling driving unit 60. As a result of the configuration of the heat dissipating means 62, The stable operation and control of the motor 61 can be realized and the lifetime of the in-wheel motor 1 can be improved.

The mode selection unit 70 is configured to select an operation mode by a user's operation. In an embodiment of the present invention, the mode selection unit 70 is implemented as a cluster provided on the front surface of the handle 412 for convenience of operation.

In one embodiment of the present invention, the operation mode selectable by the mode selection unit 70 includes a normal traveling mode 71, a rotation mode 72, and a steering interlock mode 73.

The travel control unit 80 controls the steering angle control unit 40 and the travel driving unit 60 according to the operation mode selected by the mode selection unit 70.

5, when the mode selecting unit 70 selects the normal traveling mode 71, the steering control unit 80 determines that the steering angle of the rear wheel 31 is greater than the steering angle of the rear wheel 31, And controls the rear wheel steering unit 42 so as to be fixed in a direction parallel to the longitudinal direction.

In this case, the user can steer by operating the front wheel steering unit 41 by an external force.

6, when the rotation mode 71 is selected in the mode selection unit 70, the travel control unit 80 controls the front wheels 21 and the rear wheels 31, 311, and 312, Controls the front wheel steering unit (41) and the rear wheel steering unit (42) so as to be arranged in a tangential direction of a power source for connecting three points in contact with the ground.

When the steering interlocking mode 73 is selected in the mode selection unit 70, the travel control unit 80 determines that the steering angle of the rear wheel 31 is greater than the steering angle of the front wheel 21 detected by the front wheel steering angle detection sensor 413, And controls the rear wheel steering unit 42 to correspond to the steering angle of the rear wheels.

That is, when the steering interlocking mode 73 is selected in the mode selection unit 70, the travel control unit 80 receives the steering angle change signal from the front wheel steering angle sensor 413 and operates the rear wheel steering motor 422 And when the steering angle of the rear wheel 31 sensed by the rear wheel steering angle sensor 423 coincides with the steering angle of the front wheel 21 sensed by the front wheel steering angle sensor 413, the operation of the rear wheel steering motor 422 .

The electric scooter according to the present invention is capable of various steering by the organic combination of the mode selection unit 70 and the travel control unit 80 as described above so that it is possible to perform various steering operations even when entering or leaving a narrow space such as a narrow passenger elevator It is possible to move and rotate in a desired direction in a boarding state without getting off.

The electric scooter described above and shown in the drawings is only one embodiment for carrying out the present invention and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the following claims, and the embodiments improved and changed without departing from the gist of the present invention are obvious to those having ordinary skill in the art to which the present invention belongs It will be understood that the invention is not limited thereto.

10 base frame
11 fork support plate
12 post connection plate
13 Hanging hook
14 Rear wheel coupling housing
15 lock pin
16 sheets
17 Scaffolding
20 front wheel section
21 Front wheel
30 rear wheel part
31 Rear wheel
311 1st rear wheel
312 second rear wheel
32 rear body
321 Jam Hinge Shaft
322 insertion projection
322a lock pin insertion hole
33 Suspension
331 knuckles
332 upper arm
333 Lower arm
334 Pivot housing
334a horizontal portion
334b vertical extension
334c Upper hinge part
334d Lower Hinge
335 Shock Absorber
336 coil spring
34 Restricted stopper
341 Stopper projection
342 Stopper jaws
40 steering angle control section
41 Front steering unit
411 Front steering shaft
412 Handle
413 Front wheel steering angle sensor
414 fork
415 handle post
416 universal joint
42 rear wheel steering unit
421 Rear pivot axis
422 Rear wheel steering motor
423 Rear wheel steering angle sensor
424 belt
50 tilting angle adjusting section
H tilting hinge shaft
51 Handle post cover
52-pin insertion hole
53 Tilting guide hole
54 insertion pin
55-pin release room
56 QR lever
60 running drive
61 In-wheel motor
611 stator
612 rotor
62 Heat dissipation means
621 heat sink fin
622 blowing fan
70 mode selection unit
71 Regular driving mode
72 Rotation mode
73 Steering mode
80 running control unit

Claims (3)

A base frame; A front wheel having a front wheel rotatable with respect to the ground on the front side of the base frame; A rear wheel having a rear wheel rotatable with respect to the ground on the rear side of the base frame; A steering angle adjusting unit for adjusting a steering angle of the front wheel or the rear wheel by a user's operation; A driving unit for rotating the front wheel or the rear wheel by a power source; The electric scooter according to claim 1,
The rear wheel unit includes a rear wheel body to which the rear wheel is connected to a lower portion and the front side is connected to a rear side of the base frame,
The rear side of the base frame and the front side of the rear wheel body are detachably connected,
The traveling drive unit includes an in-wheel motor and a heat dissipation unit,
Wherein the in-wheel motor includes a stator fixed to a shaft of the front wheels and a rear wheel, and a rotor rotating around the stator,
Wherein the front and rear wheel wheels are connected to the rotor,
Wherein the heat dissipating means includes a heat dissipating fin extending radially from the center on the rim wheel and having a protrusion contacted with air,
Wherein the radiating fin is inclined to blow air to a gap between the stator and the rotor when the rim wheel is rotated. The method according to claim 1,
The rear wheel body is provided with a fitting protrusion provided with a locking hinge shaft long in the left and right direction on the front side and protruding forward at an upper position of the locking hinge shaft and having a locking pin insertion hole formed in its upper surface,
Wherein the base frame includes a locking hook formed on the rear side so as to be hung on the locking hinge shaft and a locking protrusion formed on the locking protrusion when the locking protrusion is pivoted when the locking hinge shaft is rotated about the rotation center, The rear wheel coupling housing is supported on the upper surface of the rear wheel coupling housing and protrudes and retracts toward the lock pin insertion hole by an external force in a state where the fitting protrusion is inserted into the rear wheel coupling housing. And a lock pin for fixing the rear wheel coupling housing and the fitting projection to each other. 3. The method of claim 2,
And an electric wire is connected between the base frame and the rear wheel when the fitting protrusion and the rear wheel coupling housing are fitted to each other.

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