KR101989735B1 - A foldable kick boards driven by battery - Google Patents

Abstract

Disclosed is an electric kickboard folded by a simple structure. According to the present invention, the electric kickboard comprises: a footplate for riding; a handle shaft installed in the front end part of the footplate to be rotated for steering; a front wheel installed on the front side of the footplate to be rotated for steering; and a rear wheel disposed on the rear side of the footplate. Moreover, the electric kickboard comprises: the handle shaft having a connection unit formed on a lower end part, wherein the connection unit includes a screw shaft installed in the center and a plurality of coupling protrusions arranged in a circular shape around the screw shaft; a connection bracket coupled to the front side shaft and having a through hole through which the screw shaft passes and a plurality of coupling grooves arranged to correspond to the coupling protrusions; a coupling cap including a screw hole coupled to the screw shaft; and a spring installed between the coupling cap and the connection bracket to elastically pull the connection unit connected to the coupling cap toward the connection bracket.

Description

[0001] A foldable kick boards driven by battery [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric kickboard, and more particularly, to a motorized kickboard which is foldable with a simpler structure and can be regulated to rotate in a folded state.

It is very important to construct the electric kickboard so that the handle shaft can be folded on the footboard for convenience of storage and movement. It goes without saying that the structure for folding the handle shaft is preferably simple. Further, in order to steer the handle shaft is rotatably supported with respect to the foot plate, it is preferable that the handle shaft is restricted in a state that the handle shaft can not rotate in the folded state.

However, since the folding structure of the known electric kickboard is somewhat complicated, there are various disadvantages. In addition, according to the related art, it is desirable to configure the handle shaft not to rotate, but the structure for restricting rotation in the folded state is also unnecessarily complicated.

An object of the present invention is to provide an electric kickboard having a simple structure and a folding structure capable of increasing productivity by efficient assembly process based on the simple structure.

It is another object of the present invention to provide a motorized kickboard which can most simply achieve a device capable of restricting rotation of a handle shaft in a folded state.

According to another aspect of the present invention, there is provided a footrest comprising: a footrest for riding; a handle shaft provided at a front end of the footrest and rotated for steering; a front wheel provided in front of the footrest and rotated for steering; Claims [1] An electric kickboard comprising: a rear wheel; A handle shaft having a connecting shaft having a screw shaft installed at the center and a plurality of fastening protrusions arranged in a circle around the screw shaft at a lower end; A connection bracket coupled to the front wheel shaft and having a through hole through which the screw shaft passes and a plurality of engagement grooves arranged to correspond to the engagement protrusion; A fastening cap having a screw hole coupled to the screw shaft; And a spring installed between the coupling cap and the connection bracket to elastically pull the connection portion connected to the connection cap toward the connection bracket.

Here, the fastening protrusion and the fastening groove preferably have a partial conical shape.

And stop means for inserting the stopper pin, which is vertically mounted on the connection bracket and is elastically supported upward by a spring, into a stop groove formed on the top surface of the foot plate when the handle shaft is folded close to the foot plate .

According to the present invention as described above, it is possible to fold the handle shaft close to the foot plate with the simplest configuration, and it is expected that there will be a convenient advantage in handling and moving the kick board as a whole. In addition, the handle shaft is not rotated in the folding state, so that more convenient handling is expected.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram for explaining folding of an electric kickboard according to the present invention. FIG.
Fig. 2 is a perspective view of the electric kickboard according to the present invention; Fig.
3 is an exploded perspective view of the main part of the electric kickboard according to the present invention.
4 is an explanatory view for explaining folding of the recess of the electric kickboard of the present invention.
Fig. 5 is an exemplary cross-sectional view of a motorized kickboard according to the present invention; Fig.

Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings.

1, a motorized kickboard according to the present invention (hereinafter, simply referred to as a kickboard) includes a foot 10 for riding a person, which may be referred to as a main body, 25 for steering the front wheel 12a. The handle shaft 20 is configured to be foldable so as to approach the foot plate 10 with respect to the joint portion 30 as shown in Fig. In addition, the electric kickboard of the present invention is provided with a suspension 40 which is installed on the front wheel 12a and the rear wheel 12b, respectively, and absorbs vibrations and shocks during traveling.

Next, the structure of the joint part 30 for folding the handle shaft 20 will be described with reference to FIGS. 2 and 3. FIG. A circular connecting portion 22 is formed at the lower end of the handle shaft 20 as viewed from the side. A screw shaft 22a is provided at the center of the connecting portion 22, A plurality of fastening protrusions 22b are formed.

3, the front wheel shaft 12, which is supported in a state of passing through the front end of the foot plate 10, is connected to the handle shaft 20 through a connection bracket 26 or the like do. The front wheel 12 is connected to the front wheel 12a through the steering device 40. [ The front wheel connecting portion 12e extending to the outside of the front wheel shaft 12 is connected to the lower end of the connecting bracket 26 by a plurality of bolts B. [ The front wheel axle 12 substantially extends through the front end of the footrest 10 and is linked to the rotation for steering the steering wheel shaft 20 and transmits it to the suspension 40.

The connecting bracket 26 is fastened to the front wheel shaft 12 by fastening the bolts B to the fastening holes 16a formed in the connecting portions 12e of the front wheel axle 12 through the through holes 26a . That is, the connection bracket 26 is engaged with the connection portion 22 formed at the lower end of the handle shaft 20 in a state where the connection bracket 26 is connected to and fixed to the front wheel shaft 12. In the connection bracket 26, a coupling groove 26b is formed so as to correspond to the coupling projection 22b.

5, the fastening protrusion 22b has a partial conical shape, and the fastening groove 26b is formed into a conical groove corresponding to the conical shape. Therefore, when the fastening protrusion 22b is engaged with the fastening protrusion 22b, the fastening protrusion 22b is completely in close contact with the fastening protrusion 22b, so that the connecting portion 22 and the connecting bracket 26 can be coupled without any clearance. However, in the present invention, the fastening protrusions 22b and the fastening grooves 26a are not limited to the above-described shapes, and it is sufficient that the fastening protrusions 22b and the fastening grooves 26a can fix the connecting brackets 26 and the connecting portions 22 while maintaining predetermined angular positions .

The screw shaft 22a of the connecting portion 22 is screwed to the fastening cap 28 while passing through the through hole 26c at the center of the connecting bracket 26. [ Therefore, when the fastening cap 28 is completely tightened, the connecting portion 22 in the screwed state and the fastening cap 28 are in the closest state, so that the spring 23 is completely compressed and the conical- 22b are completely engaged with the engaging groove 26a.

The connecting portion 22 and the fastening cap 28 are threadedly engaged with each other at a predetermined interval through the screw shaft 22a with the connecting bracket 26 through which the screw shaft 22a passes. Therefore, assuming that the electric train shaft 12 is in a fixed state, the elastic force of the spring 23 acts in the direction of pushing the fastening cap 28 to the right in the figure, which acts in the direction of pulling the connecting portion 22 to the right The same direction.

 That is, the resilient restoring force of the spring 23 pulls the connecting portion 22 to the right, so that the fastening protrusion 22b and the fastening groove 26a can be maintained in a coupled state. The inside of the fastening cap 28 and the hole 28a are screwed to the screw shaft 22a of the connecting portion 22 with the spring cover 27 interposed therebetween. Therefore, it can be seen that the fastening cap 28 and the connecting portion 22 connected to each other via the screw shaft 22a have a predetermined interval, and this gap can be adjusted by the rotation of the fastening cap 28 . A washer 27a is preferably inserted between the screw shaft 22a and the screw hole 28a.

5 shows a state in which the screw shaft 22a of the connecting portion 22 and the fastening cap 28 are closest to each other when the fastening cap 28 is rotated and tightened. In this state, the handle shaft 20 will be firmly supported in a raised state, and steering control at the time of driving is enabled in this state. At this time, the force by which the handle shaft 20 is supported can be said to be based on the force that the fastening protrusion 22a and the fastening groove 26b are held in engagement with each other.

On the opposite side of the fastening cap 28, the fastening screw 24a is finished by an end cap 24 screwed to the connecting portion 22. In the above state, the handle shaft 22 is in a standing state, and in this state, it will be possible to steer while riding the electric kickboard. When the operation is completed, folding the handle shaft 22 close to the foot plate 10 is advantageous for movement and storage, and the folding process will be described.

In order to fold the handle shaft 20, the fastening cap 28 must first be unscrewed from the screw shaft 22a at a certain level. That is, the fastening cap 28 must be loosened from the screw shaft 22a to such an extent that the fastening protrusion 22b can escape from the fastening groove 26b. However, the spring 23 pulls the connecting portion 22 toward the connecting bracket 26 by pushing the fastening cap 28 outward (right side in the figure) even when the fastening cap 28 is loosened up to this extent. Therefore, the fastening protrusion 22b and the fastening groove 26b remain engaged with each other even when the fastening cap 28 is loosened. Therefore, in the state where only the fastening cap 28 is loosened, the handle shaft 20 itself is not folded, which is a function as a safety device.

The operation of manually separating the connection bracket 26 and the connecting portion 22 from each other by a manual operation of the user in the state in which the fastening cap 28 is loosened (this operation is to substantially separate the fastening protrusions 22b and the fastening grooves 26b) The spring 23 is compressed so that the fastening protrusion 22a and the fastening groove 26b are separated from each other. The handle shaft 20 is foldable only in such a spaced state.

When the handle shaft 20 is folded in this state, the engaging projection 22a and the engaging groove 26b are folded to a desired angle in the released state. As in the illustrated embodiment, four fastening protrusions 22a and fastening grooves 26b are formed at regular intervals and the handle shaft 20 is rotated in the state where the fastening protrusions 22a and the fastening grooves 26b are displaced When the handle shaft 20 is rotated 90 degrees, the fastening protrusion 22a and the fastening groove 26b are temporarily caught again by the elastic force of the spring 23.

When the handle shaft 20 is rotated to a state in which the handle shaft 20 is completely close to the foot plate 10, the fastening protrusion 22a and the fastening groove 26b corresponding to the position are temporarily coupled by the restoring force of the spring 23 . When the fastening cap 28 is completely tightened with respect to the screw shaft 22a, the screw shaft 22a is returned to the state shown in FIG. 5. This state is a state in which the handle shaft 20 is raised upward, The same condition can be said.

Next, a function of preventing rotation of the handle shaft 22 in the folded state will be described. 2 and 3, the front wheel axle 12 for steering the front wheel 12a is connected to the front wheel 12 via the connecting bracket 26 by connecting the connecting portion 12e with the connecting bracket 26. [ And is connected to the handle shaft 20. Therefore, when the user operates the handle 25, the front wheel 12a is steered through the handle shaft 20, the connecting bracket 26, the train shaft 12, and the suspension 40. [

Therefore, when the rotating handle shaft 20 or the connecting bracket 26 and the foot plate 10 which does not rotate are connected to each other, rotation of the handle shaft 22 can be prevented. The rotation of the handle shaft 20 must be restricted in a state where the handle shaft 22 is folded toward the foot plate 10 side. 2, a pushing protrusion 14 is formed at the lower end of the rear side of the handle 20, and a connection bracket 26 and a connection portion 12e at positions corresponding to the pushing protrusion 14 are formed. Is formed with a pin casing 26d.

A stopper pin 26e is provided on the pin casing 26d. The stopper pin 26e is supported upward by the elastic member Sa inside the pin casing 26d, and protrudes for a predetermined period. 2, stopper grooves 13 (see FIG. 4) are formed at corresponding positions of the stopper pins 26e on the top surface 10a of the distal end portion of the foot plate 10 so that the stopper pins 26e are lowered The lower end thereof can be inserted. It is a matter of course that rotation of the handle shaft 20 can be prevented when the lower end of the stopper pin 26e is inserted into the stop groove formed in the upper end surface 10a of the distal end portion of the foot plate 10. [

4, when the handle shaft 20 is folded close to the foot plate 10, the pressing projection 14 at the lower end of the handle shaft 20 presses the upper end of the stopper pin 26e downward . Therefore, the stopper pin 26e is lowered from the state (a) to the state (b) and inserted into the stop groove 13. [ In this case, since the handle shaft 20 is connected to the foot plate 10 and the stopper pin 26e, rotation in the same direction as the steering is regulated.

As described above, according to the present invention, it is understood that the handle shaft 20 can be prevented from rotating in the folded state by using the stopper pin. Here, the stopper pin 26e is provided at the lowermost end of the handle shaft 20 which is rotated for steering and is elastically supported upward. The pushing protrusion 14 is located at a position that can be pressed by the folding of the handle shaft 20 As shown in Fig. If the handle shaft 20 is not rotated in the folded state as described above, it is convenient for the user to lift or move the handle shaft 20 by using the handle shaft 20.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept as defined by the appended claims. It is natural that the provision of the Patent Act is justified.

10 ..... Scaffolding
10a ..... tip top surface
12 ..... front wheel axle
12e ..... extension
13 ..... Stopping home
14 ..... pushing projection
20 ..... handle shaft
22 ..... connection
22a ..... Screw shaft
22b ..... fastening projection
23 ..... spring
25 ..... handle
26 ..... Connection bracket
26b ..... fastening groove
26c ..... through hole
28 ..... fastening cap
28a ...

Claims (3)

A motorized kickboard comprising: a footstool for boarding; a steering wheel shaft installed at a front end of the footstool for rotating for steering; a front wheel provided at the front of the footstool for rotating for steering; and a rear wheel installed at the rear of the footstool;
A handle shaft having a connecting shaft having a screw shaft installed at the center and a plurality of fastening protrusions arranged in a circle around the screw shaft at a lower end;
A connection bracket coupled to the front wheel shaft and having a through hole through which the screw shaft passes and a plurality of engagement grooves arranged to correspond to the engagement protrusion;
A fastening cap having a screw hole coupled to the screw shaft;
A spring (23) installed between the fastening cap and the connection bracket to elastically pull the connection portion connected to the fastening cap toward the connection bracket side; And
When the handle shaft is folded in a state close to the foot plate, a stopper pin, which is vertically installed on the connection bracket and is elastically supported upward by the elastic member Sa, is inserted into a stop groove 13 formed on the top surface of the foot plate A folding electric kickboard consisting of stop means.
The folding type electric kickboard according to claim 1, wherein the fastening protrusion and the fastening groove have a partial conical shape.




delete

Images