KR101698962B1 - Double interlocking speed change bicycle capable of controlling positon of pedal and saddle - Google Patents

Abstract

The present invention can selectively couple a pedal of a bicycle capable of dual speed change to either the lower or the front of the saddle so that the bicycle can be used in various postures according to the preference of the occupant or depending on the terrain at which the bicycle is operated The present invention relates to a dual-speed bicycle capable of adjusting the position of a pedal and a saddle.
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 a wheel is rotatably provided on the front and rear sides, a handle for controlling the direction of the front wheel is provided on the front side, A first sprocket rotatably installed on one side of a first crankshaft provided in front of the frame body, and a second sprocket rotatably mounted on the other side of the first crankshaft A third sprocket rotatably installed on one side of a second crank shaft provided at the center of the frame body; a fourth sprocket rotatably installed on the other side of the second crank shaft; A fifth sprocket rotatably installed at the rear of the main body, and a second sprocket disposed 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; and a second chain selectively connected between the first crankshaft and the second crankshaft, As shown in FIG.

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 motorcycle comprising a front wheel and a rear wheel, the wheel being rotatably mounted on the front and rear sides thereof, the front wheel having a steering wheel controlled by the front wheel, A first sprocket rotatably installed on one side of a first crank shaft provided in front of the frame body; a second sprocket rotatably installed on the other side of the first crank shaft; A fourth sprocket rotatably installed on the other side of the second crankshaft; a fifth sprocket rotatably installed on the rear side of the frame body; A first chain connected between the first sprocket and the third sprocket, and a second chain connected between the second sprocket and the fifth sprocket, or A second chain selectively connected between the fourth sprocket and the fifth sprocket; and a pedal selectively coupled to both ends of the first crankshaft or the second crankshaft. By providing a possible dual-speed bike.

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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, one of the umbrella, the mass production or the windshield panel is selectively installed in the above-mentioned 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 a wheel is rotatably provided on the front and rear sides, a handle for controlling the direction of the front wheel is provided on the front side, A first sprocket rotatably installed on one side of a first crankshaft provided in front of the frame body, and a second sprocket rotatably mounted on the other side of the first crankshaft A third sprocket rotatably installed on one side of a second crank shaft provided at the center of the frame body; a fourth sprocket rotatably installed on the other side of the second crank shaft; A fifth sprocket rotatably installed at the rear of the main body, and a second sprocket disposed 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; and a second chain selectively connected between the first crankshaft and the second crankshaft, As shown in FIG.

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 the upper front side thereof for controlling the direction of the front wheel 11, The saddle 14 is adjustable in the front and rear direction and is provided with the wheel 11, the handle 12 and the saddle 14 as described above. will be.

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. In such a position adjustment method, the saddle 14 is movable in the forward and backward directions along the frame body 10 as shown in FIG. After the movement is completed, a method of fixing on the frame body 10 by the fixing screw 15 is used, and in addition to this, 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. The installation frame 13 includes one of the umbrella 120, the mass production or the windshield panel 130 It can be installed selectively.

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, . In such an installation frame 13, one of umbrella, mass production and windshield panel can be selectively installed. That is, as shown in FIGS. 3B and 4A, the umbrella 120 may be installed on the installation frame 13 side, or the windshield panel 130 may be installed as shown in FIGS. 3C and 4B have. In addition, 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 one side of the first crankshaft 40 provided in front of the frame body 10 described above. And the first chain 80 together with the three sprockets 50 are connected.

A second sprocket 30 is rotatably installed on the other side of the first crankshaft 40. The second sprocket 30 rotatably supports the second chain 90 to be described later, .

A third sprocket 50 is rotatably installed on a side of the second crankshaft 70 provided at the center of the frame body 10 described above. And serves to connect the first chain (80) together with the sprocket (20).

A fourth scrocket 60 is rotatably mounted on the other side of the second crankshaft 70. The fourth sprocket 60 has a function of selectively connecting the second chain 90 . 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.

A fifth sprocket 100 is rotatably mounted on the rear of the frame body 10. The fifth sprocket 100 is connected to the rear wheel 11 of the bicycle on the same axis, The first sprocket 30 or the fourth sprocket 60 and 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, a chain having a different length is used or its length is adjusted. In this case, when a chain having a different length is used, the method of adjusting the length of the second chain 90 is the same as the method of adjusting the length of the bicycle chain according to the prior art, so that the detailed description will be omitted for the sake of simplicity.

Meanwhile, the pedal 110 is selectively coupled to both ends of the first crankshaft 40 or the second crankshaft 70 described above. The pedal 110 serves to convert the kinetic energy due to the pedaling of the occupant to the rotational energy of the wheel 11 according to the rotation of the pedal 110.

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
130: Windshield panel

Claims (4)

A frame body rotatably provided with wheels at front and rear sides thereof, a handle having a front wheel controlled at a front upper side thereof, and a saddle capable of adjusting the positions of the front and rear wheels by a fixing screw at a rear upper side thereof;
A first sprocket rotatably installed on one side of a first crank shaft provided in front of the frame body;
A second sprocket rotatably installed on the other side of the first crankshaft;
A third sprocket rotatably installed on one side of a second crankshaft provided at the center of the frame body;
A fourth sprocket rotatably installed on the other side of the second crankshaft;
A fifth sprocket rotatably installed behind 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; And
A pedal that is selectively coupled to both ends of the first crankshaft or the second crankshaft, and a dual-speed bike capable of adjusting the position of the pedal and the saddle. 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, a parasol, or a windshield panel. The pedal and the saddle are adjustable in position. delete

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