KR101800941B1

KR101800941B1 - Scooter with steering means

Info

Publication number: KR101800941B1
Application number: KR1020150172006A
Authority: KR
Inventors: 김정태
Original assignee: 주식회사 엠스키
Priority date: 2015-12-04
Filing date: 2015-12-04
Publication date: 2017-11-23
Also published as: KR20170065798A

Abstract

The present invention relates to a kick scooter that achieves steering by tilting. These kick scooters usually consist of a front wheel, a board and a rear wheel, also called a kickboard.
The user grasps the steering wheel provided at the upper end of the front wheel part to maintain the direction adjustment and balance, and puts one foot on the board part, and paces the ground with the other foot and rolls.
The kick scooter is used not only as a means of movement but also as a sport and a playground for children.

Description

{SCOOTER WITH STEERING MEANS}

The present invention relates to a kickboard, that is, a kick scooter (Kickscooter). Generally, the kick scooter includes 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.

Generally, a kick scooter includes a front wheel part; Board part; And a rear wheel portion.

In order to increase the easiness of centering, a configuration is provided in which the rear wheels of the rear wheel are provided with two rear wheels and are arranged in parallel to each other with a distance to the left and right sides of the board. This is a useful structure 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.

In order to solve such a problem, a kick scooter having the steering means illustrated in FIGS. 1 to 4 is also provided.

In the kick scooter of the present invention,

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.

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 that is formed on the rear side 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.

1 is a perspective view showing the entire structure.
Fig. 2 is an exemplary view showing a change in direction of a front wheel from a front view in a tilting operation; Fig.
Fig. 3 is a view showing a steering operation for redirecting a part in a plane, showing an example before A steering; Fig. B is an example of steering operation; to be.
Figure 4 is an illustration of a portion of A taken from side; B A simplified diagram that is simplified by using lines and arcs to express tilting and steering motion.
Hereinafter, an embodiment of a kick scooter of the present invention is shown.
5 is an exploded perspective view.
FIG. 6 is an exploded perspective view of a structure to be assembled with the assembled FIG. 14; FIG.
Fig. 7 is an exploded perspective view of a structure to be assembled with the assembled Fig. 15; Fig.
Figure 8 is a perspective view from the bottom.
FIG. 18A of FIG. 9 is a plan view; FIG. 18B is a bottom plan view;
FIG. 19A of FIG. 10 is an exemplary view of the operation as viewed from the bottom; FIG. 19B is an explanatory view;
Fig. 11 illustrates a spring. Fig. 20A is a perspective view. Fig. 20B is a plan view; 20C is a side view;

Generally, a kick scooter that tilts and steers the front wheel portion to the left and right comprises a front wheel portion 100, a board portion 200, and a rear wheel portion 300, as shown in FIGS. 1 and 2.

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 his / her foot on the foot plate 220, the front wheel assembly 210 comprises the front wheel assembly 100,

The rear wheel part 300 includes a rear wheel wr for rolling motion and is configured in the rear jig 230. At this time, the rear jig 230 may be provided with a foot brake 231 for braking the rear wheel wr. The present invention is based on the construction of such a kick scooter.

On the other hand, the configuration of the kick scooter described above can be further specified as follows,

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.

1 and 2, the lower end of the handle strut 120 is fixed to the front upper portion of the board unit 200, and the handle strut 120 is installed (vertically installed) A 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 to tilt the board unit 200 sideways as shown in FIG. ).

The kick scooter having the above-described configuration is configured to organically transmit the tilting b1 to the front wheels to steer it. It does not steer the handle strut 120 by turning the handle 110 to the left or right like a conventional kick scooter or bicycle. Referring to FIGS. 2 to 4 and the steering principle,

The example of FIG. 4B shows the components in simplified symbol form in order to show the interaction between the respective components of the front wheel part 100. In particular, compared with the example of FIG. 2 shown in the front view, the steering caster inclination angle a1 ) To express a figure that was slightly sideways.

2, 3B, and 4B, when the user grasps the handle 110 and tilts the handle strut 120 sideways and tilts the kick scooter (b1), the steering support frames 211a, 211b And the steering support shaft 212 formed by the inclination of the steering caster inclination a1 is also inclined. At this time, since the distance between the front wheel wf and the ground is unchanged, the steering shaft portion 131 hinged to the steering support 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. 3B. 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.

3B, the steering lever 130 is moved to the side (c2) so that the steering shaft portion 131 performs the directional switching (c1), and the steering operation of the front wheel is performed .

As shown in FIGS. 3 and 4A, since a tilting restoration spring is connected to the rear of the steering lever 130, the tilting restoration spring can be restored to the state shown in FIGS. 4B and 3B, The steering lever 130 can be elastically restored to the state shown in FIG. 4A by applying an elastic restoring force to the steering lever 130.

Next, an embodiment of the kick scooter of the present invention will be described in detail with reference to the drawings attached to FIG. 5 and the followings.

5 and 9, the kick scooter according to the embodiment of the present invention includes steering means 300 for controlling the directions of left and right front wheels wf: wfa, wfb for rolling motion, A front wheel part (100); A board portion 200 having a steering means fixing groove 220h formed at a front end thereof to couple the front wheel portion 100 and the steering means 300; A rear wheel portion provided with an outer ring or an outer ring; . The parts omitted in the above description refer to the views of the other drawings in Fig. 1 and below.

A handle strut fixing shaft 310 is vertically disposed at an upper end of the steering means 300 and the handle strut fixing shaft 310 is connected to a lower end of the handle strut 120 of the front wheel unit 100 Respectively.

The steering means 300 is provided as a completely independent unit. Accordingly, as shown in FIG. 6, the board unit 200 can be inserted and coupled by a single fitting operation. Therefore, it is advantageous for mass production at the work site, and repair and replacement of parts can be performed quickly and efficiently during use.

For this purpose, after the steering means fixing groove 220h is formed in the center of the front end of the board unit 200 in the longitudinal direction of the board unit 200, the steering means fixing shaft 320 of the steering unit 300 Insert and fix it. At this time, the inner periphery of the steering means fixing groove 220h should be formed to correspond to the outer periphery of the steering means fixing shaft 320. In the example of the drawing, the steering means fixing shaft 320 takes the shape of a pipe or rod having a circular cross-section. After the fitting, it can be fixed by screwing or the like of a conventional method.

The shape of the front end of the board unit 200 corresponds to the shape of the gull of the branch shaft 330 (330a, 330b) of the steering unit 300 and prevents the tension and shrinking action of the springs 360 (360a, 360b) A chamfer is applied to the left and right sides of the front end so as to take a V or W shape as a whole in plan view. And a hole for forming the steering means fixing groove 220h is horizontally opened from a concave portion of the shape. In addition, a spring rear hanger shaft h3 for fixing the rear ends 362 of the left and right springs 360 (360a, 360b) is provided at the lower left and right ends of the front end of the board unit 200, respectively. Reference is also made to Figs. 7 and 8 in this regard.

5, a Y-shaped structure having a Y-shape is formed in a horizontal direction at the lower end of a vertically erected steering strut fixing shaft 310. As shown in FIG.

More specifically, a seagull V-shaped branch shaft 330 (330a, 330b) extending from the lower end of the handle strut fixing shaft 310 to the front left and right sides is disposed, Shaped steering shaft 320 is disposed to form a Y-shaped structure as a whole together with the branch shaft 330 (330a, 330b).

Steering frame support shafts 331 (331a, 331b) are formed in the right and left front ends of the branch shafts 330 (330a, 330b) in the vertical direction. Here, the vertical direction is expressed for convenience of explanation, and it means a direction in which the steering caster tilting angle a1 is inclined forward. It is to be noted that like reference numerals are used throughout the description of the present invention. Further, in the entire description of the present invention, the horizontal direction in the configuration related to the above configuration reflects the steering caster inclination angle a1 as a meaning perpendicular to the vertical direction.

In addition, the relationship between the steer angle of the steering caster and the steering action that occurs when the kick scooter is tilted to the left and right will refer to the above description and the drawings in Figs.

5, the rear ends of the left and right branch shafts 330 (330a and 330b) and the front ends of the steering means fixing shafts 320 are fixed to the handle strut fixing shaft 310 It can be simply provided by welding, so that the manufacturing method can be simplified.

The left and right steering frames 340 (340a, 340b) are hinged to the steering frame support shafts 331 (331a, 331b) on the left and right sides so that they can rotate (refract) in the horizontal direction.

The steering frame 340 (340a, 340b) takes a C shape as viewed from the front, takes a rectangular shape as viewed from the side, and takes a roughly rectangular shape with one side shorter in plan view. The steering frame 340 (340a, 340b) includes a side plane f1, an upper plane f2 and a lower plane f3, and the front wheels wf are arranged in parallel to each other in parallel to the side plane f1 , And a front wheel shaft (sh) for bearing the front wheel (wf) is constituted.

Holes perforated in the vertical direction on the same vertical line are formed on the upper plane f2 and the lower plane f3. The holes are formed on the upper plane f3 and the lower plane f3 with a distance therebetween in front of and behind the upper plane f3 and the lower plane f3. The holes are referred to as a steering frame front shaft hole 341 and a steering frame rear shaft hole 342, respectively. On the other hand, the front wheel sh is disposed rearwardly behind the steering frame front shaft hole 341.

Holes perforated in the vertical direction are formed in the steering frame support shafts 331a and 331b and vertical holes of the steering frame support shafts 331a and 331b are aligned with the steering frame front shaft hole 341 And the steering frame support shafts 331 (331a, 331b) are interposed between the upper plane (f3) and the lower plane (f3). The hinge coupling is configured by a method in which the front hinge axis h1 is engaged with a vertical hole of the steering frame support shaft 331 (331a, 331b) and the steering frame front shaft hole 341 at a time.

Steering levers 350 are spaced laterally parallel to the rear of the branching shafts 330 (330a, 330b). That is, the steering lever 350 is spaced below the handle strut fixing shaft 310.

The right and left ends of the steering lever 350 are formed with steering lever shaft holes 351a and 351b which are perforated in the vertical direction respectively so that the steering lever shaft holes 351 and 351a and 351b and the steering frame rear shaft hole 342 are rotated in the horizontal direction. In the hinge coupling, the rear hinge shaft h2 is formed by vertically inserting the steering shaft rear shaft hole 342 and the steering lever shaft holes 351, 351a and 351b in the vertical direction at the same time. It should be noted here that the left and right ends of the steering lever 350 are located at the bottom of the lower plane f3 of the steering frame 340 (340a, 340b), as in the example of Fig.

10A and 10B illustrate the working principle. When the kick scooter is tilted by tilting the kick scooter to either side, the front wheel wf is turned in the direction of tilting. At this time, the steering lever 350 moves in the opposite direction. As a result, the distance between the rear hinge axis h2 and the spring rear hinge axis h3 fastened to the steering frame becomes very far from either the left or right side, and at the same time. The spring 360 is also very stretched (x1 -> x21). On the other hand, the other spring 360 is compressed, and the degree of compression is very small.

6 to 11, the spring 360 is provided with a member such as a synthetic resin, a rubber, a rubber band, a coil spring, or the like capable of exerting a tensile force. The spring 360 may be formed as a ring or a hook And includes a spring front end 361 and a spring rear end 362 to be taken. The spring front end 361 is fitted and fastened to the rear hinge axis h2 and the spring rear end 362 is fitted and fastened to the spring rear end h3.

In the case of being provided in the form of a metal tension coil spring, it can take the form as shown in the example of Fig.

11B, the spring front end 361 takes the form of a ring and the spring rear end 362 takes the form of a V-shaped hook. At the time of manufacturing and assembling work, A spring-shaped spring front end 361 in the form of a ring is disposed between the upper plane f3 and the lower plane of the steering frame 340 (340a, 340b), and the steering frame rear shaft hole 342 and the spring shear (361) at a time. Thereafter, the spring 360 provided by a coil spring of metal is slightly pulled to fasten the spring rear end 362 to the spring rear end hook h3. Since the spring rear end 362 is V-shaped, the fixing positions m1 and m2, which are fitted to the V-shaped wedge shape according to the outer circumferential size of the spring rear hanger shaft h3, Thereby adjusting the initial tension of the elastic member 360.

And the spring front end 361 may be spaced from the lower plane f3 of the steering frame 340 (340a, 340b) by forming an elevation hi from the floor, as in the example of Fig. Accordingly, the degree of interference and friction generated when the spring 360 contacts the lower plane f3 can be reduced,

100: front wheel 110: handle 120: handle strut 130: steering lever
200: board part 210: front jig 220: foot plate 230: rear jig
300: rear wheel portion 310: rear jig

Claims

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,
Wherein the rear wheel portion includes a rear wheel for rolling motion,
Wherein the front wheels are composed of a first front wheel and a second front wheel, the pair of front wheels being spaced apart from each other by a distance in the front of the board portion,
The steering unit is provided as an independent unit and is coupled to the board unit 200 by a single fitting operation,
The V-shaped branching shafts 330a and 330b extending from the lower end of the handle strut fixing shaft 310 to the front left and right sides are arranged to reflect the steering caster inclination angle a1, A steering means fixing shaft 320 extending in one shape toward the rear is disposed, and the whole takes a Y shape,
Steering frame support shafts 331a and 331b are formed at the front ends of the left and right sides of the branch shafts 330a and 330b,
Left and right steering frames 340 (340a, 340b) are hinged to the steering frame support shafts 331 (331a, 331b) on the left and right sides so as to be rotatable in the horizontal direction,
The steering frame 340 (340a, 340b)
And a lower planar surface (f1), wherein the front surface (wf) is arranged in parallel to the front surface (wf) and the front surface (wf , A front wheel shaft (sh) to be supported is constituted,
Two holes spaced apart forward and rearward are formed at a time in the vertical direction perpendicular to the phase plane f2 and the lower plane f3 so as to form the steering frame forward shaft hole 341 and the steering frame rear shaft hole 342, the front wheel sh is disposed rearwardly of the steering frame front shaft hole 341 rearward,
Holes are formed in the steering frame support shafts 331a and 331b in the vertical direction so that the holes of the steering frame support shafts 331a and 331b and the steering frame front shaft holes 341 correspond to each other, The steering frame support shafts 331 (331a, 331b) are interposed between the plane (f3) and the lower plane (f3)
The hinge coupling is configured by a method in which the front hinge axis h1 is engaged with the hole of the steering frame support shaft 331 (331a, 331b) and the steering frame front shaft hole 341 at a time,
The left and right ends of the steering lever 350 are spaced apart from the left and right sides of the steering shaft 340 (340a, 340b) Is positioned at the bottom of the lower plane f3,
Steering lever shaft holes 351 a and 351 b formed in the right and left ends of the steering lever 350 are formed in the vertical direction so that the steering lever shaft holes 351 a and 351 b and the steering frame rear shaft holes 342 b Wherein the hinge connection is performed such that the rear hinge shaft h2 is engaged with the steering shaft rear shaft hole 342 and the steering lever shaft holes 351 and 351a and 351b in the vertical direction at the same time The spring forward ends 361 of the left and right springs 360 (360a, 360b) are fitted and fastened to the rear hinge axis (h2)
So that the front wheel part 100 and the steering unit 300 are coupled to the board part 200,
A steering member fixing groove 220h is formed in a longitudinal direction of the board unit 200 at the front end of the board unit 200. An inner periphery of the steering member fixing groove 220h is connected to the steering member fixing shaft 320 The steering member fixing shaft 320 is inserted into the steering member fixing groove 220h so as to be fixed to the steering member fixing groove 220h,
The shape of the front end of the board unit (200)
A chamfer is applied to the right and left ends of the front end in correspondence with the V shape of the branch shaft 330 (330a, 330b) so as to prevent the tensile and contracting action of the right and left angular springs 360 (360a, 360b) A hole for forming the steering means fixing groove 220h is formed in a concave portion of the shape and a rear end of each spring of the left and right springs 360 (360a, 360b) is formed at the lower left and right ends of the front end of the board portion 200 And a spring rear hanger shaft (h3) for fixing the spring (362)
Which is characterized by a tilting-type turning kick scooter.

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