KR20150090670A

KR20150090670A - Four wheel bi-cycle

Info

Publication number: KR20150090670A
Application number: KR1020140011576A
Authority: KR
Inventors: 김영대
Original assignee: 김영대
Priority date: 2014-01-29
Filing date: 2014-01-29
Publication date: 2015-08-06

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a four-wheeled bicycle, and more particularly, to a four-wheeled bicycle having a rotary shaft for transmitting rotational force to the front and rear of a frame, and a pair of front wheels and rear wheels, A bicycle can be safely and easily taken out by a novice, a child, an elderly person or the like by stably holding the bicycle tilted more than a wheel or a separate auxiliary wheel, and the interval between the pair of front wheels is smaller than the interval between the pair of rear wheels, It can safely hold the electric tilting, and the bike can be safely redirected when making a direction call, thus guaranteeing the safety of the user.

Description

Four wheel bi-cycle

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a four-wheeled bicycle, and more particularly, to a four-wheeled bicycle having a rotary shaft for transmitting rotational force to the front and rear of a frame, and a pair of front wheels and rear wheels, A bicycle can be safely and easily taken out by a novice, a child, an elderly person or the like by stably holding the bicycle tilted more than a wheel or a separate auxiliary wheel, and the interval between the pair of front wheels is smaller than the interval between the pair of rear wheels, A four-wheel bicycle that safely holds the electric tilting and ensures that the bike can be safely redirected when making a direction call, thus assuring the safety of the user.

Generally, a bicycle generally refers to means for rolling a rear wheel or a front wheel, and is a bicycle for a child or an adult who uses a front wheel as a driving wheel and a rear wheel as a driving wheel (hereinafter, referred to as a 'bicycle' .).

[0004] Among bicycles that drive the rear wheels, children ride bicycles are equipped with auxiliary wheels on both sides of the rear wheel to prevent the bicycle from falling down.

However, when the bicycle having the auxiliary wheels is operated as described above, since the auxiliary wheels are rotated only in the direction of straightening, when the cornering is performed, the auxiliary wheels are pulled toward the cornering without changing their directions, And frequently fall down in the cornering direction.

In addition, when the cornering is performed, the wheels on the cornering side are not rotated and friction is generated on the ground in the cornering direction. As a result, the circumferential end of the auxiliary wheel wears only on the outer side. Of course, it also had the problem of falling easily during cornering.

The bicycle equipped with the above-mentioned auxiliary wheel is used as a means of transportation by children and beginners as well as elderly people with weak body strength. However, when the elderly people get more weight than the children, when the elderly people ride on the cornering as described above, the frictional force between the wheels and the ground on the cornering side becomes strong due to the heavy weight.

Therefore, the wheels on the cornering side are not drawn in the cornering direction due to the strong friction between the auxiliary wheels and the ground, which are not changed in direction, and the bicycle is tilted at the moment of cornering, which causes fatal injuries to the elderly with weak bones .

Japanese Patent Application Laid-Open No. 10-2011-0095429 Registration Utility Model No. 20-0360657

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

A pair of front wheels and a pair of rear wheels are formed at both ends of the rotary shaft so that the bicycle can be more stably tilted than the conventional two wheels or three or more separate wheels. It is aimed to provide a four-wheeled bicycle for anyone who is a beginner, a child, or an elderly person to ride the bicycle safely and easily.

In addition, since the interval between the pair of front wheels is smaller than the interval between the pair of rear wheels, a four-wheel bicycle can be provided to safely secure the tilting of the electric motor, There is another purpose.

In order to accomplish the above object, the present invention is characterized in that a frame having a handle mounted on one end thereof is mounted, a saddle which can be seated by a user is mounted on a central upper end of the frame, and front wheels and rear wheels are rotatably mounted A bicycle in which a gear is rotatably mounted by a pedal which is mounted and moves the wheel at the lower center of the frame,

The bicycle according to any one of claims 1 to 4, wherein the rotation axis is formed on both sides of the frame, and is protruded to the outside of the frame, and a front wheel and a rear wheel are installed on both ends of the rotation axis to prevent tilting of the bicycle will be.

As described above, the four-wheel bicycle of the present invention is provided with a rotating shaft for transmitting rotational force to the front and rear of the frame, and a pair of front wheels and rear wheels are formed at both ends of the rotating shaft, Whether you are a beginner, a child or an elderly person, the bicycle can be safely and easily hired by steadily holding the bicycle tilted more than the wheel or the separate auxiliary wheels.

In addition, since the interval between the pair of front wheels is smaller than the interval between the pair of rear wheels, it is possible to safely hold the electric tilting and securely change the direction of the bicycle during a direction call, thereby assuring safety of the user.

1 is a perspective view of a four-wheeled bicycle according to an embodiment of the present invention,
2 is a plan view of a four-wheel bicycle according to an embodiment of the present invention.

The present invention has the following features in order to achieve the above object.

The present invention is characterized in that a frame having a knob mounted on one end thereof is mounted, a saddle which can be seated by a user is mounted on a central upper end of the frame, a front wheel and a rear wheel are rotatably mounted on both sides of the frame, A bicycle having a gear rotatably mounted by a pedal that moves a wheel at a central lower end thereof,

The front and rear wheels are installed on both ends of each of the rotating shafts to prevent the bicycle from tilting.

The present invention having such characteristics can be more clearly described by the preferred embodiments thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing in detail several embodiments of the present invention with reference to the accompanying drawings, it is to be understood that the present invention is not limited to the details of construction and the arrangement of components shown in the following detailed description or illustrated in the drawings will be. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front," "back," "up," "down," "top," "bottom, Expressions and predicates used herein for terms such as "left," " right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation. Also, terms such as " first "and" second "are used herein for the purpose of the description and the appended claims, and are not intended to indicate or imply their relative importance or purpose.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

FIG. 1 is a perspective view of a four-wheel bicycle according to an embodiment of the present invention, and FIG. 2 is a plan view of a four-wheel bicycle according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, the four-wheel bicycle 60 of the present invention is generally provided with a frame 10 on one side of which a handle 11 is mounted, A saddle 12 to which a user can be seated is mounted and the front wheel 20 and the rear wheel 30 are rotatably mounted on both sides of the frame 10, The gears 50 and 51 are rotatably mounted by a pedal 13 that is provided on the vehicle body.

1 and 2, a rotary shaft 40 is formed on both sides of the frame 10 and is protruded to the outside of the frame 10, A pair of front wheels 20 and rear wheels 30 are provided at the ends to prevent the bicycle 60 from tilting.

The width W2 between the pair of front wheels 20 is narrower than the width W1 between the pair of rear wheels 30 as shown in Fig. 2. That is, the width W2 between the pair of rear wheels 30 Is formed to be wider than the width W2 between the pair of front wheels 20 so that the bicycle 60 can be easily turned and prevented from tilting at the same time.

1, the gears 50 and 51 include a gear 50 for a pedal and a gear 51 for a rotary shaft formed on a rotary shaft 40 connected to the rear wheel 30, The gear 50 and the rotary shaft gear 51 are connected to the chain 52 so that the rotational force of the pedal 13 is transmitted to the rear wheel 30. [ At this time, pedals 13 are provided on both side surfaces of the pedal gear 50 so that the user turns the pedal 13 to rotate the pedal gear 50. The pedal gear 50 and the rotary shaft gear 51 are formed in multiple stages and are adjustable in various stages to adjust the speed.

1 and 2, the frame 10 is connected to a rotary shaft 40 formed on both sides by bearings (not shown) so that the frame 10 is supported while the rotary shaft 40 is rotated. At this time, The end of the frame 10 connected to the rotary shaft 40 is branched to both sides and connected to the rotary shaft 40 as shown in FIG.

2, the branched portion of the frame 10 extends to both sides of the frame 10 and is connected to the rotary shaft 40 so that the frame 10 is centered on both side rotary shafts 40. [

10: Frame 11: Handle
12: Saddle 13: Pedal
20: Front wheel 30: Rear wheel
40: rotation shaft 50: gear for pedal
51: gear for rotating shaft 52: chain
60: Bicycles

Claims

A saddle 12 capable of placing a user is mounted on a central upper end of the frame 10 and a saddle 12 is mounted on both sides of the frame 10, A bicycle 60 in which gears 50 and 51 are rotatably mounted by a pedal 13 which rotatably mounts a rear wheel 20 and a rear wheel 30 and moves a wheel at a lower center of the frame 10, In this case,
The front and rear wheels 20 and 30 are provided on both ends of the respective rotary shafts 40. The rotary shafts 40 are formed on both sides of the frame 10, Is provided to prevent the bicycle (60) from tilting.

The method according to claim 1,
The gear includes a pedal gear 50 and a rotary shaft gear 51 formed on a rotary shaft 40 connected to the rear wheel 30. The pedal gear 50 and the rotary shaft gear 51, Is connected to the chain (52) so that the rotational force of the pedal (13) is transmitted to the rear wheel.

The method according to claim 1,
The width W2 between the pair of front wheels 20 is smaller than the width W1 between the pair of rear wheels 30 so that the bicycle 60 can be easily turned and prevented from tilting. Four-wheel bikes.

The method according to claim 1,
The frame 10 is connected to a rotary shaft 40 formed on both sides by a bearing and an end of the frame 10 connected to the rotary shaft 40 is branched to both sides and connected to the rotary shaft 40, Wherein the branched portion of the frame (10) extends to both sides of the frame (10) so that the frame (10) is centered on the two rotary shafts (40) and connected to the rotary shaft (40).