KR20160071047A - Double interlocking speed change bicycle capable of controlling positon of pedal and saddle - Google Patents

Abstract

The present invention relates to a double speed changing bicycle capable of adjusting the positions of a pedal and a saddle, which enables a user to selectively couple pedals to the front of a saddle or a part directly under the saddle. The le speed changing bicycle capable of adjusting the positions of a pedal and a saddle, according to an embodiment of the present invention, comprises: a frame body which has wheels, a handlebar, and a saddle; a first sprocket which is installed in the front of one surface of the frame body to be rotated; a second sprocket which is installed on the first sprocket and a first crank shaft to be rotated; a third sprocket which is installed in the center of one surface of the frame body to be rotated; a fourth sprocket which is installed on the third sprocket and a second crank shaft to be rotated; a fifth sprocket which is installed in the rear of one surface of the frame body to be rotated; a first chain which is connected between the first and third sprockets; a second chain which is selectively connected to the gap between the second and fifth sprockets or the gap between the fourth and fifth sprockets; and pedals which are coupled to the second crank shaft in the case that the second chain is connected to the gap between the second and fifth sprockets and are coupled to the first crank shaft in the case that the second chain is connected to the gap between the fourth and fifth sprockets.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dual-speed bicycle capable of adjusting the position of a pedal and a saddle.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dual speed change bicycle capable of adjusting the position of a pedal and a saddle, and more particularly to a dual speed change bicycle capable of selectively positioning a pedal of a bicycle capable of double speed change, Speed bicycle capable of controlling the position of a pedal and a saddle where the bicycle can be used in various postures according to the terrain of the place where the bicycle is operated.

Generally, bicycles are used as a power source for people, so they are not polluted, they are inexpensive and easily accessible, and they are widely used in sports and leisure activities as well as in transportation. In order to increase the mobility of the bicycle, the pedal gear is generally disposed at a position corresponding to the rear wheel gear Diameter.

It is also possible to form a control handle that allows the rear wheel gear or pedal gear to be in the form of a gearbox that combines gears divided into several sizes and allows the position of the rear wheel gear to be changed in the handle, The bicycle can be used conveniently by relieving pressure.

However, since the rear wheel gear can not be installed indefinitely in a limited bike frame, a bicycle capable of dual speed change has been known in recent years. According to this conventional technique, Korean Patent Laid-Open Publication No. 10-2005-0040169 Quot; bicycle with intermediate gear "

However, in the case of such a conventional technique, since the pedal is positioned directly under the saddle of the bicycle, the upper body should be pushed forward too far to grasp the handle so that shoulder pain, back pain, pelvic pain and groin pain may be caused there was.

In order to overcome such a problem, a pedal is placed on the side of a seat tube on which a saddle is installed in a bicycle frame on November 26, 2013 (Korean Patent Application No. 10-2013-144319) by the applicant of the present invention Instead, the pedal is located at the front of the seat tube, so that the bicycle can ride in a straight posture compared to when the pedal is positioned below the seat tube, preventing shoulder pain, back pain, pelvic pain and groin pain and pedaling the stairs in a climbing posture The knee and femur are simultaneously moved up and down simultaneously, and at the same time, the handle that grips the upper limb and the chest in a unilateral state can be used to pull out the muscular strength and to transmit the force easily. And "double-shift bike capable of right pedaling posture" in which safety accidents can be prevented.

However, since the bicycle must be operated in various postures according to the occupant who uses the bicycle, or the terrain of the section where the bicycle is operated, there is a disadvantage that it is difficult for the occupant to take a desired posture with the bicycle in which the pedal position is located in front of the seat tube .

Therefore, it is an object of the present invention to provide a bicycle capable of selectively engaging a pedal of a bicycle capable of dual speed change, either directly under the saddle or forward, so that the bicycle can be moved in various postures according to the preference of the occupant, A dual-speed bicycle capable of adjusting the position of a pedal and a saddle that can be used.

The object of the present invention is to provide a frame body in which wheels are rotatably provided at front and rear sides, a handle for controlling the direction of the front wheel is disposed at the front upper side, and a saddle is provided at the rear side, A second sprocket disposed between the first sprocket and a front side of the frame body so as to be rotatable on the first sprocket and the first crankshaft; A third sprocket rotatably installed at a center of one side of the main body; a third sprocket disposed between the center of one side of the frame body and the third sprocket, and rotatably mounted on the third sprocket and the second crank shaft; A sprocket, a fifth sprocket rotatably installed at a rear side of one side of the frame body, A second chain selectively connected between the second sprocket and the fifth sprocket or between the fourth sprocket and the fifth sprocket; a second chain selectively connected between the second sprocket and the fifth sprocket; A pedal coupled to the second crankshaft when coupled to the sprocket and coupled to the first crankshaft when the second chain is coupled between the fourth sprocket and the fifth sprocket; This is accomplished by providing a dual-speed bicycle capable of adjusting the position of the saddle.

According to a preferred feature of the present invention, the saddle is positionally adjusted in the forward and backward directions on the frame body.

According to a preferred aspect of the present invention, an installation frame capable of adjusting an angle and a height is provided on the frame body.

According to a preferred feature of the present invention, an umbrella / mass production or a windshield panel is selectively installed in the installation frame.

According to the preferred embodiment of the present invention as described above, the dual-speed bicycle capable of adjusting the position of the pedal and the saddle can selectively couple the pedal of the bicycle capable of double shift to either the lower or the front of the saddle, The bicycle can be used in various postures depending on the sign or the terrain at which the bicycle is operated.

1 is a perspective view of a dual-speed bike capable of adjusting the position of a pedal and a saddle according to an embodiment of the present invention;
FIG. 2A and FIG. 2B are conceptual views illustrating the operation of a dual-shift bike capable of adjusting the position of a pedal and a saddle according to an embodiment of the present invention;
FIGS. 3A through 3C illustrate operation of a dual-speed bike capable of adjusting the position of a pedal and a saddle according to an embodiment of the present invention;
FIGS. 4A and 4B are views showing the state of use of a dual-speed bike capable of adjusting the position of a pedal and a saddle according to an embodiment of the present invention;

FIG. 1 is a perspective view of a dual speed change bicycle capable of adjusting the position of a pedal and a saddle according to an embodiment of the present invention. FIGS. 2a and 2b show a pedal and saddle position control according to an embodiment of the present invention. 3A to 3C show an operation diagram of a dual speed change bicycle capable of adjusting the position of a pedal and a saddle according to an embodiment of the present invention, and Figs. 4A and 4B show the operation of the double- A state of use of a dual speed change bicycle capable of adjusting the position of a pedal and a saddle according to an embodiment of the present invention is shown.

The dual-speed bicycle capable of adjusting the position of the pedal and the saddle according to the preferred embodiment of the present invention is characterized in that the wheel is rotatably provided at the front and the rear, the handle for controlling the direction of the front wheel is provided at the front upper side, A first sprocket disposed rotatably on a front side of one side of the frame body, and a second sprocket positioned between the front side of the frame body and the first sprocket, A third sprocket rotatably mounted on a crankshaft, a third sprocket rotatably installed at a center of one side of the frame body, and a second sprocket positioned between a center of one side of the frame body and the third sprocket, A fourth sprocket rotatably mounted on the third sprocket and the second crank shaft, A first chain connected between the first sprocket and the third sprocket and a second chain connected selectively between the second sprocket and the fifth sprocket or between the fourth sprocket and the fifth sprocket; A second chain is coupled to the second crankshaft when the second chain is connected to the second sprocket and the fifth sprocket, and when the second chain is connected between the fourth sprocket and the fifth sprocket, 1 pedal engaged on the crankshaft.

Hereinafter, the constituent members of the dual speed change bike 1 capable of adjusting the position of the pedal and the saddle according to the preferred embodiment of the present invention and their interlocking relationship will be described in detail with reference to FIG. 1 to FIG. 4B.

Here, the frame body 10 is provided with a wheel 11 rotatably mounted on the front and rear sides thereof, and a handle 12 on which the direction of the front wheel 11 is controlled on the front upper side, and a saddle 14 And serves as the skeleton of the bicycle in which the above-mentioned wheels 11, the handle 12 and the saddle 14 as well as the constituent members to be described later are operatively installed.

The frame body 10 may be variously sized for children, adults, and the like. The material of the frame body 10 may be variously formed of metal, carbon, or the like.

The saddle 14 is supported on the crotch part of the bicycle occupant and is adjustably positioned in the forward and backward directions on the frame body 10 side. 3A, the saddle 14 is moved forward and backward along the frame body 10. After the movement is completed, the frame body 10 is fixed by the fixing screw 15, It is a matter of course that various methods according to the prior art can be used.

The installation frame 13 is installed on the frame body 11 so that the angle and the height of the installation frame 13 are adjustable so that the umbrella / mass production 120 or the windshield panel 130, which will be described later, It is the role that can be installed.

The mounting frame 13 is positioned in the frame body 11 directly behind the handle 12. The mounting frame 13 is angled in the form of a ball joint and is installed in a double pipe shape so that the upper pipe is drawn out in the lower pipe, . Therefore, the umbrella / mass production 120 may be installed on the installation frame 13 side as shown in FIGS. 3B and 4A, and the windshield panel 130 may be installed as shown in FIGS. 3C and 4B It is possible. Also, although not shown, the above-described installation frame 13 may be moved back and forth on the frame body 11. [

A first sprocket 20 is rotatably installed on the front side of the frame body 10. The first sprocket 20 includes a first sprocket 50 to be described later, And the chain 80 is connected.

A second sprocket 30 is positioned between the front side of the frame body 10 and the first sprocket 20 described above and the second sprocket 30 is connected to the second chain 90 ) Are selectively connected to each other. At this time, the second sprocket 30 is rotatably installed on the first sprocket 20 and the first crankshaft 40 described above.

A third sprocket 50 is rotatably installed at the center of one side of the frame body 10. The third sprocket 50 is connected to the first sprocket 20 together with the first sprocket 20, (80) are connected to each other.

A fourth sprocket 60 is positioned between the center of one side of the frame body 10 and the third sprocket 50. The fourth sprocket 60 is positioned such that the second chain 90 It is to be connected. At this time, the fourth sprocket 60 is rotatably installed on the third sprocket 50 and the second crankshaft 70 described above.

The fourth sprocket 60 described above may cause interference with the second chain 90 when the second chain 90 described above is connected to the second sprocket 30 other than the fourth sprocket 60 , And the fifth sprocket 100 to be described later is formed of a plurality of sprockets to adjust the gear ratio. Accordingly, the fourth sprocket 60 has a diameter smaller than that of the second sprocket 30, and when the second sprocket 30 is connected to the sprocket having the smallest diameter among the fifth sprockets 100, Size.

On the other hand, a fifth sprocket 100 is rotatably installed on the rear side of one side of the frame body 10. The fifth sprocket 100 is connected to the rear wheel 11 of the bicycle on the same axis, And is selectively connected to the second sprocket 30 or the fourth sprocket 60 by the second chain 90. As described above, the fifth sprocket 100 includes a plurality of sprockets and is configured to control the gear ratio. The fifth sprocket 100 is the same as the sprocket of the bicycle according to the prior art in which gear change is possible, so that the detailed description will be omitted for the sake of simplification of the description.

The first chain 80 is connected between the first sprocket 20 and the third sprocket 50 and the second sprocket 30 and the fifth sprocket 100 or the fourth sprocket 60 described above are connected. And the second chain 90 is selectively connected between the first sprocket 100 and the fifth sprocket 100.

The first chain 80 described above is always connected between the first sprocket 20 and the third sprocket 50 and the second chain 90 described above is connected between the second sprocket 30 and the fifth sprocket 100 Or between the fourth sprocket 60 and the fifth sprocket 100, as shown in FIG. At this time, the length adjusting method of the second chain 90 is the same as the length adjusting method of the bicycle chain according to the related art, and the detailed description will be omitted for the sake of simplification of the description.

The pedal 110 is selectively coupled to the first crankshaft 40 or the second crankshaft 70. The pedal 110 is rotated by a predetermined amount of kinetic energy To the rotation energy of the wheel 11.

When the second chain 90 is connected to the second sprocket 30 and the fifth sprocket 100, the pedal 110 is engaged on the second crankshaft 70, Is coupled on the first crankshaft (40) when connected between the fourth sprocket (60) and the fifth sprocket (100).

That is, when the passenger pedals the pedal 110 coupled to the second crankshaft 70 as shown in FIG. 2A, the third sprocket 50, the first chain 80, the first sprocket 20, And this power is transmitted to the second sprocket 30 by the first crankshaft 40. In this case, The power is transmitted in the order of the second sprocket 30, the second chain 90, and the fifth sprocket 100, and the power transmitted to the rear wheels 11 of the bicycle is finally transferred to the rear wheels 11 of the bicycle.

2b, when the occupant pedals the pedal 110 coupled to the first crankshaft 40, power is transmitted in the order of the first sprocket, the first chain 80, and the third sprocket 50 And this power is transmitted to the fourth sprocket 60 by the second crankshaft 70. The power is transferred in the order of the fourth sprocket 60, the second chain 90, and the fifth sprocket 100, and the power transmitted to the rear wheels 11 of the bicycle is finally transferred to the rear wheels 11 of the bicycle.

As described above, according to the dual speed change bicycle 1 in which the position of the pedal and the saddle can be adjusted, the position of the pedal 110 is shifted to the lower or right side of the saddle 14 according to the symbol of the bicycle occupant or the terrain in which the bicycle is operated And the saddle 14 can also be moved in the forward and backward directions on the frame body 10 so that the rider can run the bicycle in a comfortable posture or a desired posture from the standpoint of the passenger.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It is not limited.

1: Dual shift bike with adjustable pedal and saddle position
10: frame body
11: Wheels
12: Handle
13: Installation frame
14: Saddle
15: Securing screw
20: First sprocket
30: Second sprocket
40: first crankshaft
50: Third sprocket
60: Fourth sprocket
70: Second crankshaft
80: First chain
90: second chain
100: fifth sprocket
110: Pedal
120: Umbrella / mass production
130: Windshield panel

Claims (4)

A frame body rotatably provided at front and rear sides of the vehicle, a handle rotatably mounted on a front upper side of the frame body, and a saddle mounted on a rear side of the frame body;
A first sprocket rotatably installed at a front side of one side of the frame body;
A second sprocket disposed between the first sprocket and a front side of the frame body and rotatably mounted on the first sprocket and the first crankshaft;
A third sprocket rotatably installed at a center of one side of the frame body;
A fourth sprocket disposed between the center of one side of the frame body and the third sprocket and rotatably mounted on the third sprocket and the second crankshaft;
A fifth sprocket rotatably installed behind one side of the frame body;
A first chain connected between the first sprocket and the third sprocket;
A second chain selectively connected between the second sprocket and the fifth sprocket or between the fourth sprocket and the fifth sprocket;
The second chain is coupled on the second crankshaft when connected to the second sprocket and the fifth sprocket and the second chain is coupled on the first crankshaft when the second chain is connected between the fourth sprocket and the fifth sprocket, Wherein the pedal and the saddle are adjustable in position. The method according to claim 1,
Wherein the saddle is positioned in the forward and backward directions on the frame body. The method according to claim 1,
Wherein the frame body is provided with an installation frame capable of adjusting an angle and a height of the frame. The method of claim 3,
Wherein the installation frame is provided with an umbrella / mass production or windshield panel selectively.

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