KR20160103472A - Scooter with steering means - Google Patents

Abstract

The present invention relates to a child kick scooter (Kickscooter), which is usually composed of a front wheel part, a board part and a rear wheel part, and is also called a kickboard.
The steering wheel provided at the upper end of the front wheel is grasped to adjust the direction and balance, and one foot is put on the board, and the other foot is put on the ground and rolls.
The kick scooter is used not only as a moving means but also as a movement and a playground.

Description

[0001] SCOOTER WITH STEERING MEANS [0002]

The present invention relates to a kick scooter (Kickscooter), also referred to as a kickboard, and typically the kick scooter comprises a front wheel, a board and a rear wheel.

The user holds the steering wheel provided at the upper end of the front wheel part with his / her hands and adjusts and balances the steering wheel. The driving force is obtained by putting one foot on the board and rolling the ground with the other foot.

The kick scooter is used as a movement and a playground for children, and is also used as a means of moving near.

In the prior art related to the present invention, a kick scooter including a front wheel part, a board part and a rear wheel part is provided as in the example of Fig.

Specifically, in the rear wheel portion, a rear wheel is provided with two rear wheels, and the rear wheels are disposed in parallel to each other with a distance left and right of the board portion. This is a structure that is easy to maintain when the user is a young child or a beginner.

However, since the left and right rear wheels arranged in plural are spaced apart by a considerable distance, there is a possibility that a safety accident may be caused when the foot is tilted to get a thrust to the rear wheel.

Further, the structure of the conventional kick scooter is not easy to tilt the kick scooter to the left or right, i.e., to perform the tilting operation.

On the other hand, the kick scooter usually has a foot brake. The foot brake refers to a braking means for causing the bottom of the foot brake to come into contact with the upper end of the rear wheel of the kick scooter so as to generate a braking force when the user depresses the foot downward. Such a foot brake is disadvantageous in that when a foreign object such as soil or sand is applied to the outer circumferential surface of the rear wheel in contact with the ground, the slip occurs and the frictional force is lowered, so that the braking force is weakened.

The kick scooter of the present invention is designed to solve the above-described problems,

Thereby eliminating the possibility that the user comes into contact with the rear wheel during the operation of spurping the floor to kick the kick scooter to obtain the driving force,

The front wheel is used as a left and right double wheel structure so that the center can be maintained easily, and a tilting operation in which the kick scooter is tilted to the left and right can be performed, so that the centrifugal force generated when the corner is rotated,

At the same time, at the time of steering operation to change the direction to left and right, steering function is induced by tilting to make an organic functional relation between tilting and direction change, and to enhance the balance sense of the user by using this.

On the other hand, another object of the present invention is to provide a foot brake means with more reliable braking force.

To achieve the above-described object, a kick scooter of the present invention includes:

A front wheel; Board part; A rear wheel portion,

Wherein the front wheel portion includes: a front wheel that performs rolling motion; And steering means for controlling the direction of the front wheel,

The board unit includes: a footrest on which a user puts his / her foot; A front jig in which the front wheel part is formed in front of the foot plate; And a rear jig which is formed in the rear portion of the foot plate,

The rear wheel portion includes a rear wheel that performs rolling motion,

Wherein the front wheels are composed of a first front wheel and a second front wheel arranged so as to be spaced apart from each other at a distance in the front of the board portion,

The rear wheel includes a first rear wheel and a second rear wheel.

According to the configuration of the present invention,

It is possible to minimize the possibility that the foot is in contact with the rear wheel when the user runs the kick scooter and spurs the ground,

It is possible to tilt the kick scooter tilting left and right so as to oppose the centrifugal force when the corner is rotated, and at this time, it is possible to control the steering in the left and right direction by using the tilting It is possible to improve the sense of balance of the user.

Further, in a foot brake that performs braking by stepping on the foot, a braking force that is more reliable than that of the conventional foot brake can be exhibited, so that the braking force can be quickly braked in a dangerous situation.

Brief Description of the Drawings Fig. 1 is a view showing an example of a kick scooter according to the related art, in which rear wheels are separated in parallel. Fig. However, the reference numerals shown in Fig. 1 are not related to the reference numerals of the present invention.
Hereinafter, embodiments of the present invention will be described.
Fig. 2 is a perspective view showing the whole. Fig.
3 is a perspective view seen from the back side.
Fig. 4 is a perspective view seen from the bottom side; Fig.
FIG. 5 is a partially enlarged view showing a part separated from the bottom side. FIG.
Fig. 6 shows only the portion shown on the bottom side. A is a perspective view seen from the anterior floor; B is a perspective view from the back bottom.
Fig. 7 is an enlarged view of a portion of Fig. 6, which is enlarged from the rear. Fig.
FIG. 8 is a perspective view of the above-described FIG. 6. FIG.
Fig. 9 is an exemplary view showing a frontal direction change of the front wheel in a tilting operation; Fig.
Fig. 10 is an exemplary view of the steering operation for redirecting, which is shown in a plane illustrating a part before steering A; Fig. B is an example of steering operation; to be.
11 is an exemplary view of a portion of A; B A simplified diagram that is simplified by using lines and arcs to express tilting and steering motion.
12 is a planar perspective view of another example of the present invention.
13A is a side view and a rear view showing an example of another part of the present invention; 13B is an operation diagram showing the operation state thereof.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

2 to 4, the kick scooter of the present invention comprises a front wheel part 100, a board part 200 and a rear wheel part 300.

The front wheel portion 100 includes front wheels wf (wf1, wf2) for rolling motion and steering means for controlling the direction of the front wheels.

The board unit 200 includes a front jig 210 in front of the foot plate 220 and a rear jig 230 in the rear of the foot plate 220. A user places a foot on the foot plate 220, and the front wheel unit 210 is formed on the front jig 210.

The rear wheel part 300 includes a rear wheel wr for rolling motion and is configured in the rear jig 230. The rear jig 230 may be provided with a foot brake 231 for braking the rear wheel wr.

The rear wheel wr of the rear wheel portion 300 is configured such that a pair of the first rear wheel wr1 and the second rear wheel wr2 are in contact with each other on the left and right sides of the rear jig 230 rearward of the board portion 200, . Accordingly, since the left and right widths are narrow, even if the plurality is provided, a plurality of left and right sides are provided without contacting the feet of the user, thereby providing a structure easy to center. Such a structure is organically related when turning using a tilting action, thus allowing for the tilting and at the same time providing an adequate balance.

More specifically,

The front wheels wf are composed of a first front wheel wf1 and a second front wheel wf2 which are disposed apart from each other in the front of the board unit 200 with a distance therebetween.

A means for switching the direction of the front wheel wf includes a caster means for switching the direction to a place tilted tilting like a truck structure of a skateboard and a caster means for steering , and a four-ring linkage for steering.

2, 3 and 5, the lower end of the handle strut 120 is fixed to the front upper portion of the board unit 200 to construct a handle strut 120 (refer to The handle 110 is attached to the upper end of the handle strut 120 so that the user tilts the handle strut 120 to either side as shown in FIG. Tilting (b1). The kick scooter according to the present invention is to mechanically transmit the tilting (b1) to the front wheels for steering. It is not intended to steer the handle strut 120 by turning the handle 110 like a normal kick scooter.

3 and 5, the handle strut 120 is tightly fixed to the strut fixing pipe 211 of the front jig 210 and tightened with a screw or the like to prevent the release of the fixed state Other attachment means may be used.

The strut fixing pipe 211 is formed by taking an empty pipe shape in the vertical direction of the front jig 210.

2 to 5, the front cover 210a is formed in an arcuate shape protruding upward in front of the board part 200, and is resistant to a load acting in a vertical direction, And its tip (front side) has an inclined portion 210b inclined downward forward. The left and right ends of the inclined portion 210b protrude further forward to cover the lower portion of the inclined portion 210b so as to block external exposure of the steering shaft portion 131 and the structure associated therewith. The top cover 210a has a Y-shape as a whole when viewed from the top.

4 and 5, a portion of the structure related to the steering is blocked and protected from the dust or the like coming from the ground floor at the bottom of the front jig 210, The Bartum cover 210c is attached.

An internal structure for steering the front wheel wf is illustrated in Figs. 6 and 8 by way of example.

Steerable support frames 211a and 211b projecting respectively forward and rightward from the strut fixing pipe 211 and having a V shape are formed. A steering support shaft 212 extends downwardly from left and right ends of the V shape of the steering support frames 211a and 211b. A steering support shaft 212 is inclined to the steering support shaft 212, The caster inclination angle a1 is given. The inclination angle a1 of the steering caster acts as a caster at the time of tilting (b1) of the kick scooter to cause a change in direction to the front wheel wf. Since the V shape of the steering support frames 211a and 211b is integrated with the strut fixing pipe 211, the movement of the steering strut 120 in the left and right tilting tilting motion is transmitted to the steering shaft portion 131 without leakage . In addition, when a strong impact is applied from the ground, the V-shaped steering support frames 211a and 211b can play a role of absorbing the impact with predetermined elasticity. Since the V-shape has a very simple structure, it is possible to support the steering shaft portion 131 with a minimum amount of members.

The steering shaft 131 is hinged at the lower end of the steering shaft 212 so that the steering shaft 131 can rotate horizontally. The steering shaft 131 has an L shape and a bent portion of the L shaped body sh2 directly hinges the steering support shaft 212. The L- A rotary shaft sh1 for supporting the front wheel wf is extended and the other end of the L shape hinges with the steering lever 130. [

The steering lever 130 has a rectangular shape such as a long bar, and both left and right ends of the steering lever 130 are hinged to the other end of the steering shaft 131 in a horizontal direction. Linear tilting restoring springs (spring: spring1, spring2) having an elastic force are disposed at the middle left and right sides of the steering lever 130, respectively. The tilting restoration spring imparts a restoring force to stand the original kick posture of the kick scooter of the present invention after the tilting (b1) operation, thereby helping to maintain balance in use. In addition, when the kick scooter is not used, And the like.

The front end of the tilting restoration spring is fixed to the steering lever 130 and the rear end thereof is fixed to the lower end of the front jig 210 across the lower end of the strut fixing pipe 211. At the lower end of the front jig 210, spring fixing parts 213 (213a and 213b) are arranged in parallel to the left and right to protrude downward. 7, the rear end of the tilting restoration spring is provided so as to be wound twice or more in the form of a coil sp, And are fixed to the spring fixing portions 213a and 213b, respectively.

Hereinafter, the steering principle of the kick scooter of the present invention will be described with the above-described configuration.

Relevant illustrations are shown in front elevation in Figures 9-11. Here, the example of FIG. 11B shows the components in simplified symbol form in order to show the interaction between the respective components of the front wheel 100, and in particular, compared with the example of FIG. 9 shown in the front view, (a1), which is a representation of a slightly slanted sideways appearance.

9, 10B, and 11B, when a user grasps the handle 110 and tilts the handle strut 120 sideways to apply the tilting (b1) operation to the kick scooter of the present invention, the steering support frame 211a, and 211b are inclined sideways, and the steering support shaft 212 formed by giving the steering caster inclination angle a1 is also inclined together. At this time, since the distance between the front wheel wf and the ground is unchanged, the steering shaft 131 hinged to the steering shaft 212 rotates the hinge at a predetermined angle spin. The left and right front wheels wf1 and wf2 switch the direction by the spin to perform the steering b2 action. This is a kind of caster effect.

An example of the hinge hinge is shown in FIG. 10B. A bearing is interposed between the steering shaft 212 and the steering shaft 131 about a shaft, So that the load can be held and rotated. At this time, since the left and right front wheels wf1 and wf2 are mutually restrained by four hinges, the left and right front wheels wf1 and wf2 are synchronized with each other to perform a steering operation.

10B, the steering lever 130 is moved to the side (c2), so that the steering shaft portion 131 performs the direction change (c1), and the steering operation of the front wheel .

As shown in FIGS. 10 and 11A, since a tilting restoration spring is connected to the rear of the steering lever 130, after the tilting restoration spring reaches the states shown in FIGS. 11B and 10B, The elastic restoring force is applied to the steering lever 130, and the elastic restoring force can be restored to the state of FIG. 11A again.

In the example of FIG. 12A, the tilting restoration spring is formed in an arc shape. The front end of the tilting restoring spring is firmly fixed to the rear of the steering lever 130 and the rear end of the tilting restoring spring is fixed to the spring fixing portion 213 The shape of the arc changes as shown in the example of FIG. 12B along with the movement of the steering lever 130. That is, the curvature or (half) diameter of the arc is changed. Therefore, the deformation of the tilting restoration spring acts as an elastic force, so that the steering lever 130 can be elastically restored to its original position.

On the other hand, in the example of FIG. 13A, the foot brake 231 of the present invention is shown,

The front end of the foot brake 231 is coupled to the upper end of the rear jig 230 as a movable hinge shaft h so that the body of the foot brake 231 can move up and down.

A wedge type brake pad 231a protruding downward from the bottom of the body of the foot brake 231 in an inverted pyramid shape is provided. The inverted pyramid shape of the wedge-shaped brake pads 231a should be formed in a shape corresponding to the shape of the upper space between the left and right rear wheels wr1 and wr2.

When the user pushes down the upper surface of the foot brake 231 as in the operation of the example shown in FIG. 13B, the wedge-shaped brake pad 231a is engaged with the upper side clearance between the two rear wheels wr1 and wr2 So that the upper inside of the left and right rear wheels wr1 and wr2 is pressed by the wedge action. Therefore, even if foreign matter is applied to the outer bottom surfaces of the rear wheels wr (wr1, wr2), the left and right side surfaces of the wedge type brake pad 231a rub the inside of the left and right rear wheels wr1, wr2, The slip does not occur because it is not in contact with the foreign matter. Therefore, even if the rear wheels wr (wr1, wr2) roll on the soil or the sand, a reliable braking effect irrespective of the road surface environment to roll can be relied, and particularly, a strong braking force can be exhibited by the wedge action.

100: front wheel part
110: Handle
120: handle strut
130: Steering lever
200: board part
210: front jig
220: Scaffolding
230: rear jig
300: rear wheel
310: rear jig

Claims (3)

In a kick scooter,
A front wheel; Board part; A rear wheel portion,
Wherein the front wheel portion includes: a front wheel that performs rolling motion; And steering means for controlling the direction of the front wheel,
The board unit includes: a footrest on which a user puts his / her foot; A front jig in which the front wheel part is formed in front of the foot plate; And a rear jig that is formed on the rear side of the foot plate,
And the rear wheel portion includes a rear wheel that performs rolling motion. The method according to claim 1,
Wherein the front wheel comprises a first front wheel and a second front wheel arranged such that a pair of the front wheels are spaced apart from each other by a distance in the front of the board portion. The method according to claim 1,
And the rear wheel includes a first rear wheel and a second rear wheel.

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