WO2010123166A1

WO2010123166A1 - Tandem bicycle

Info

Publication number: WO2010123166A1
Application number: PCT/KR2009/002170
Authority: WO
Inventors: 최의정
Original assignee: Choi Eui Jeong
Priority date: 2009-04-24
Filing date: 2009-04-24
Publication date: 2010-10-28

Abstract

The present invention relates to a tandem bicycle and comprises: a front wheel and a rear wheel; a main handle bar to steer the front wheel; a main frame which separates the front wheel and the rear wheel; a saddle unit made of a pair of saddles each having a hip supporting part adapted to support the rider’s hips, and a protrusion formed on the hip supporting part and arranged between the legs of the driver, wherein the hip supporting part of each saddle are opposite to each other and are supported independently by the upper side of the main frame; a main rotational shaft adapted to rotate on the main frame; a pair of main pedals which are connected with an interval to the main rotational shaft for rotating the main rotational shaft; a rear-wheel shaft adapted to rotate on the main frame, and which has the rear wheel mounted on thereto; a main power-transmission part which links the main rotational shaft and the rear-wheel shaft and transmits the rotational force generated at the main rotational shaft to the rear-wheel shaft. In this way, not only can two riders sit back to back and move safely while ascertaining conditions at the front and rear, but also the joy of riding on a bicycle can be enhanced.

Description

2-seater bicycle

The present invention relates to a two-seater bicycle, and more particularly, to a two-seater bicycle in which two drivers can use the bicycle with their back to each other.

As the obesity population is rapidly increasing for modern people who lack exercise compared to the food consumed by the development of civilization, the importance of health due to adult diseases is a hot topic.

Various diet products are being introduced to reduce body fat due to obesity, which is the cause of adult disease, but it is developed without considering professionalism and the diet effect is not reviving on expectations.

Various electric vibration belts using electricity are used to reduce belly fat, but vibration of some parts of the body while standing or sitting does not provide a condition to break down body fat. However, the moment you use the belt, you will feel cool and will not reach the conditions where your body fat can be broken down.

Recently, meridian massage using microscopic movements is used to remove or reduce body fat accumulated in belly, thighs, and face, but this effect also temporarily disperses the accumulated fat to other places at the moment of massage by a massage specialist. After a while, it will return to its original state, which also does not match the effect.

It is true that ordinary people as well as experts have a lack of awareness of exercise, so they tend to concentrate on exercise for physical fitness, which is a stumbling block to exercise while doing short time exercise. It is helpful for muscle exercise, but it is not very helpful for breaking down body fat.

Cycling for aerobic exercise is a great help for aerobic exercise, but as many as 17 million cars are repeatedly standing and going in a narrow country like Korea, even if there is a bicycle-only road on the road due to traffic congestion Due to the high pollution caused by the fact that it is having a great difficulty in securing a bicycle driver.

As such, automobiles should be driven only by necessity and should focus on securing a bicycle driver.

The supply of general bicycles should not only be universal, but if the bicycles are made safe, interesting and fun, it will be a great help to secure the bottom line.

Recently, two-seater bicycles, which can be enjoyed by two people instead of using bicycles alone, are becoming widespread.

In the conventional two-seater bicycle, the two persons should drive only in front of the front, and the driver riding behind should only drive in front of the back of the person in front, so it was difficult to keep an eye on the front. It was difficult for the driver to be exposed to anxiety and danger.

Therefore, driving on a general road using a conventional two-seater bicycle has many problems due to risks, so it is not practical to buy a two-seater bicycle and it is hardly put to practical use. It was limited to feeling.

In addition, when riding a bicycle for a long time, the pelvis and waist is not only tired, but also due to the disappearance of the interest is bored because there is a problem that the exercise interest is lowered.

An object of the present invention is to provide a two-seater bicycle that can be safely exercised while ensuring the front and rear situation by two drivers to ride on the back to each other, as well as double the pleasure of riding a bicycle.

Means for Solving the Problems According to the present invention, a front wheel and a rear wheel; A main handle for steering the front wheels; A main frame spaced apart from the front and rear wheels; A pair of saddles each having a buttock support that supports the buttocks of the driver and a protrusion that protrudes from the buttock support and is disposed between the legs of the driver, and the buttock support portions of each saddle face each other and are spaced apart from each other above the main frame A saddle unit; A main rotating shaft rotatably provided on the main frame; A pair of main pedals coupled to the main rotary shaft at intervals to rotate the main rotary shaft; A rear wheel shaft spaced apart from the main rotation shaft and rotatably installed on the main frame, and having a rear wheel mounted thereon; The main rotating shaft and the rear wheel shaft is connected to each other, and provides a two-seater bicycle comprising a main power transmission for transmitting the rotational force generated from the main rotating shaft to the rear wheel shaft.

Here, the main power transmission unit, the drive sprocket mounted to the main rotation shaft; One or more driven sprockets mounted to the rear wheel shaft; It is preferable to include a main chain interconnecting any one of the drive sprocket and the driven sprocket, and transmits the rotational force generated in the main rotation shaft to the rear wheel shaft.

The driven sprocket is composed of a plurality of, each of the driven sprocket has a different diameter, so that the multi-stage can be changed to not only adjust the number of rotation of the rear wheel, but also to variously control the lifting frequency of the saddle do.

In addition, the auxiliary rotary shaft is located between the main shaft and the rear wheel shaft, rotatably installed on the main frame; A pair of auxiliary pedals coupled to the auxiliary rotation shaft at intervals to rotate the auxiliary rotation shaft; A pair of auxiliary sprockets mounted to the auxiliary rotating shaft and the main rotating shaft, respectively; By connecting the pair of auxiliary sprockets and further comprising an auxiliary chain for transmitting the rotational force generated from the auxiliary rotational shaft to the main rotational shaft, by rotating the pair of auxiliary pedals can increase the rotational force of the main rotational shaft Will be.

On the other hand, the auxiliary chain is preferably cross-linked to the pair of auxiliary sprockets.

In addition, having a grippable grip, and further comprising an auxiliary handle disposed opposite to the main handle with the pair of saddles interposed therebetween and fixed to the main frame, the driver in the rear stably centers the bicycle while driving. You can catch it.

Therefore, according to the above-mentioned means for solving the above problem, two drivers may ride on their backs to each other to securely move while ensuring the front and rear situation, as well as double the enjoyment of riding a bicycle.

1 is a perspective view of a two-seater bicycle according to the present invention;

2 is a front view of FIG. 1,

3 is a rear view of FIG. 1;

4 is a plan view of FIG. 1.

＊ Description of symbols for main parts of the drawings ＊

11: front wheel 17: main handle

21: rear wheel 23: rear wheel shaft

25 main frame 31 saddle unit

33a, 33b: saddle 35: buttocks support

37: protrusion 41: main axis of rotation

45: main pedal 53a: drive sprocket

53b: Driven sprocket 55: Main chain

71: auxiliary rotation shaft 73: auxiliary pedal

75a, 75b: secondary sprocket 77: secondary chain

81: auxiliary handle 83: grip

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 show a two-seater bicycle according to the present invention. As shown in these drawings, the two-seater bicycle according to the present invention is a front wheel 11 which is steered by the main handle 17, a rear wheel 21 that rotates by the rotational force of the main pedal 45, and the front wheel ( 11) and the main frame 25 to rotatably support the rear wheel 21.

The front wheel shaft 13 is coupled to the center of the front wheel 11, the front wheel shaft 13 is rotatably supported by the front wheel frame (15).

The main handle 17 for steering the front wheels 11 is disposed above the front wheel frame 15. The main handle 17 is provided with a pair of grippable grips 19.

The rear wheel 21 is disposed at a distance from the front wheel 11, the rear wheel shaft 23 is coupled to the center of the rear wheel 21, the rear wheel shaft 23 is rotatably supported on the main frame 25 have.

The main frame 25 forms a truss structure connecting the front wheel 11 and the rear wheel 21. The main frame 25 located above the front wheel 11 is provided with a fixed shaft 27 through which the front wheel frame 15 passes.

On the upper side of the main frame 25 between the front wheel 11 and the rear wheel 21, a saddle unit 31 is provided which allows two drivers to sit against each other. Saddle unit 31 is composed of a pair of saddles (33a, 33b), each saddle (33a, 33b) is an arch-shaped buttock support portion 35 for comfortably supporting the buttocks of the sciatic part of the driver, and buttock support portion (35) Protruding from and having a protrusion 35 disposed between both legs of the driver. The pair of

saddles

33a and 33b are arranged so that two drivers face each other. That is, the buttock support portions 35 of the

saddles

33a and 33b are disposed to face each other, and the protrusions 35 of the

saddles

33a and 33b are provided with the main handle 17 and the auxiliary handle 81 to be described later. It is arranged to face. Accordingly, the two drivers can sit on the

saddles

33a and 33b with their backs facing each other.

In addition, a main rotary shaft 41 that is rotated by the main pedal 45 is rotatably installed on the main frame 25 between the front wheel 11 and the rear wheel 21.

A pair of main pedals 45 for rotating the main rotary shaft 41 are coupled to both ends of the main rotary shaft 41.

On the other hand, the main rotary shaft 41 and the rear wheel shaft 23 are interconnected by the main power transmission unit. The main power transmission unit includes a drive sprocket 53a mounted on the main rotation shaft 41, a plurality of driven sprockets 53b mounted on the rear wheel shaft 23, a drive sprocket 53a, and a plurality of driven sprockets 53b. It has a main chain 55 which interconnects any one of them and transmits the rotational force generated in the main rotation shaft 41 to the rear wheel shaft 23.

Each

sprocket

53a, 53b is mounted at one end of the main shaft 41 and the rear wheel shaft 23 to form the same plane.

In particular, the plurality of driven sprockets 53b have different diameters so that the rotation speed of the rear wheel 21 can be changed by the operation of the shifting unit to be described later.

Here, the diameter of the drive sprocket 53a is preferably larger than the diameter of each driven sprocket 53b.

As a result, the main power transmission unit transmits the rotational force of the main rotary shaft 41 to the rear wheel shaft 23, and the rear wheel 21 has a driving function.

Meanwhile, the two-seater bicycle according to the present invention further has a shift unit of a known bicycle, and the main handle 17 is equipped with a shift operation unit 63, and the main chain 55 on the rotational track of the main chain 55. The shift lever 65 which selectively hangs in any one of the several driven sprocket 53b is arrange | positioned, and the shift lever 65 and the shift operation part 63 are mutually connected by the shifting cable 67. As shown in FIG.

Thus, when the shift operation unit 63 is operated so that the shifting cable 67 is tensioned and relaxed during the rotation of the main chain 55, the shifting cable 67 tensions and relaxes the shift lever 65 so that the main chain ( 55) is selectively caught by any one of the plurality of driven sprockets 53b having different diameters. That is, for example, when the main chain 55 is rotated while pulling the shifting cable 67 connected to the shift lever 65, the driven sprocket 53b of the plurality of driven sprockets 53b is caught in a relatively large diameter. The rear wheel 21 rotates at a lower speed than the normal rotation speed by releasing at a low speed, and releases the shifting cable 67 and rotates the main chain 55 so that a relatively small diameter of the plurality of driven sprockets 53b is driven. The rear wheel 21 rotates at a higher speed than the normal rotation speed by being caught at the sprocket 53b and shifting at a high speed. Here, the transmission unit may be optionally interposed.

On the other hand, in the two-person bicycle according to the present invention, the auxiliary rotation shaft 71 is located between the main rotation shaft 41 and the rear wheel shaft 23, the auxiliary rotation shaft 71 is rotatably installed on the main frame 25. .

A pair of auxiliary pedals 73 for rotating the auxiliary rotation shaft 71 are coupled to both ends of the auxiliary rotation shaft 71.

A pair of

auxiliary sprockets

75a and 75b are mounted on the auxiliary rotation shaft 71 and the main rotation shaft 41, respectively. Each of the

auxiliary sprockets

75a and 75b is mounted on the other end of the auxiliary rotation shaft 71 and the main rotation shaft 41 in the same plane at intervals from the driving sprocket 53a of the main power transmission unit. Here, it is preferable that the pair of

auxiliary sprockets

75a and 75b have the same diameter.

The pair of

auxiliary sprockets

75a and 75b are interconnected by the auxiliary chain 77, and the auxiliary chain 77 serves to transmit the rotational force generated by the auxiliary rotation shaft 71 to the main rotation shaft 41. Here, the auxiliary chain 77 is preferably cross-crossed in a pair of auxiliary sprockets (75a, 75b), the auxiliary rotation shaft 71 and the main rotation shaft 41 is always rotated in the same direction.

As a result, by rotating the pair of auxiliary pedals 73, the rotational force of the main rotary shaft 41 can be increased.

In addition, the two-seater bicycle according to the present invention further has an auxiliary handle 81 that allows the driver riding in the rear to stably center the bicycle while driving.

The auxiliary handle 81 has a grippable grip 83, which is fixed to the main frame 25 symmetrically with the main handle 17 with a pair of

saddles

33a and 33b interposed therebetween. .

In addition, the two-seater bicycle according to the present invention has a brake lever 91, a brake pad 95, and a brake cable 95 for braking driving of the rear wheel 21.

The brake lever 91 is mounted to the main handle 17, the brake pad 95 contacts and is spaced from the side of the rear wheel 21, and the brake lever 91 and the brake pad 95 are connected to the brake cable 95. Are connected by

Accordingly, the brake cable 95 is tensioned and relaxed as the brake lever 91 is operated to contact and space the brake pads 95 from the side surfaces of the rear wheels 21, thereby providing a space between the brake pads 95 and the rear wheels 21. The frictional force of the can be adjusted, it is possible to simply brake the driving of the rear wheel (21).

By this configuration, the use of a two-seater bicycle according to the present invention will be described.

When two drivers sit on their backs with their

saddles

33a and 33b positioned forward and backward, respectively, each driver steps on the main pedal 45 and the auxiliary pedal 73 in their respective traveling directions to assist the driver. The rotational force of the auxiliary rotating shaft 71 rotated by the pedal 73 is transmitted to the main rotating shaft 41 through the auxiliary chain 77.

At the same time, the rotational force of the main rotary shaft 41 by the rotation of the main pedal 45 is transmitted to the rear wheel shaft 23 through the main chain 55 together with the rotational force generated from the auxiliary rotary shaft 71, the rear wheel shaft 23 Rotates, and the bicycle moves forward.

As described above, the two-seater bicycle according to the present invention rotates by stepping on the main pedal 45 and the auxiliary pedal 73 in a state where two drivers face each other and sit on the

saddles

33a and 33b positioned before and after the bicycle. The rear situation is caused by two drivers having their backs turned to each other in an interesting way by pedaling 45,73 in their respective forwarding directions but traveling in one direction only by the steering of the main handle 17. You can have a conversation with the driver who is driving forward, and sometimes you will be able to enjoy the bike while notifying you of the situation behind you.

In addition, the driver who rides in the rear breaks the stereotype that the bicycle only travels forward, while riding the bicycle with interest and fun, preventing adult diseases and improving physical strength.

Therefore, the two drivers can ride on their backs to each other, and can safely exercise while securing the front and rear situations, as well as double the enjoyment of riding a bicycle.

Meanwhile, in the above-described embodiment, the main power transmission unit of the main rotating shaft and the rear wheel shaft is described as having a driving sprocket, a driven sprocket, and a main chain to transmit the rotational force of the main pedal, but a pair of the main rotating shaft and the rear wheel shaft is provided. Of course, the belt pulley can be mounted and the belt pulleys can be interconnected by belts to transfer the rotational force of the main rotating shaft to the rear wheels.

In addition, in the above-described embodiment, a pair of auxiliary sprockets and an auxiliary chain are provided on the main rotating shaft and the auxiliary rotating shaft to transmit the rotational force of the auxiliary pedal to the main rotating shaft, but a pair of belts are provided between the main rotating shaft and the auxiliary rotating shaft. Of course, by mounting the pulleys and interconnecting each belt pulley with a belt can transmit the rotational force of the auxiliary rotary shaft to the main rotary shaft.

In addition, in the above-described embodiment, a plurality of driven sprockets are described as being mounted to the rear wheel shaft, but only one driven sprocket may be mounted to the rear wheel shaft.

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

Claims

Front and rear wheels;

A main handle for steering the front wheels;

A main frame spaced apart from the front wheel and the rear wheel;

And a pair of saddles each having a buttock support for supporting the buttocks of the driver and a protrusion which protrudes from the buttock support and is disposed between both legs of the driver, wherein the buttock support portions of the saddles face each other and are at an upper side of the main frame. A saddle unit spaced apart from each other;

A main rotating shaft rotatably provided on the main frame;

A pair of main pedals coupled to the main rotary shaft at intervals to rotate the main rotary shaft;

A rear wheel shaft spaced apart from the main rotation shaft and rotatably installed on the main frame and on which the rear wheel is mounted;

And a main power transmission unit which connects the main rotation shaft and the rear wheel shaft to each other and transmits the rotational force generated from the main rotation shaft to the rear wheel shaft.
The method of claim 1,

The main power transmission unit,

A drive sprocket mounted to the main rotating shaft;

One or more driven sprockets mounted to the rear wheel shaft;

And a main chain interconnecting any one of the driving sprocket and the driven sprocket, and transmitting a rotational force generated from the main rotation shaft to the rear wheel shaft.
The method of claim 2,

The driven sprocket is made of a plurality, each of the driven sprockets, characterized in that having a different diameter from each other.
The method according to any one of claims 1 to 3,

An auxiliary rotation shaft positioned between the main rotation shaft and the rear wheel shaft and rotatably installed on the main frame;

A pair of auxiliary pedals coupled to the auxiliary rotation shaft at intervals to rotate the auxiliary rotation shaft;

A pair of auxiliary sprockets mounted to the auxiliary rotating shaft and the main rotating shaft, respectively;

And an auxiliary chain connecting the pair of auxiliary sprockets to each other and transmitting the rotational force generated from the auxiliary rotating shaft to the main rotating shaft.
The method of claim 4, wherein

The auxiliary chain is a two-seater bike characterized in that the cross hook to the pair of auxiliary sprocket.
The method of claim 1,

The gripper has a grippable gripper, wherein the pair of saddles are disposed between the main handle and the auxiliary handle fixed to the main frame.