KR100918262B1 - A bicycle by rear wheel steering, front wheel driving. - Google Patents

Abstract

The present invention installs and drives the pedal 11 including the transmission gear device 1 on the front wheel, and changes the direction by installing chain gears 53 and 63 on the lower portion of the handle 70 and the rear wheel shaft. It's about a two-wheeled bike with a different structure than a bicycle.

The pedal shaft 17 is fixed to the center of the front wheel, which is composed of three gears and can be selectively driven in one direction, and has a transmission gear device 1 capable of obtaining 2-4 times the rotation force of the pedal rotation. The handle shaft 52 in which the shaft is separated by the shaft bearing connector 6 is fixed to the handle 70 on the wheel shaft frame 2. Another pair of tubular connector front axle frames (3) of the front wheels (40) are secured by a detachable tubular connector heel frame (8) and a tubular connector frame fastener (9), and a cylindrical connector heel frame (8). ) Maintains the center of the rear wheel 80 by fixing the axial bearing 82 for the rear axle connection. A body auxiliary frame 4 is installed between the two frames 2 and 3 of the front wheel 40. The support of the bicycle saddle 90 is installed where the lower part of the frame 4 and the cylindrical connector front axle frame 3 meet, so that the front wheel 40 and the saddle 90 have three frames (2, 3, 4). Is fixed to the handle shaft 52 of the handle 70 and the rotation chain gear cover 50 of the handle 70 and the rear wheel shaft frame 81 of the rear wheel 80. The rear wheel rotation chain gear cover 60 is connected by chain link cables 55 and 65 stacked with a vinyl hose to interlock with the steering wheel rotation. The rear wheel 80 is configured to rotate.In addition, as in a general bicycle, two saddle shock absorbers 93 and 94 are installed on the support of the bicycle saddle 90 to absorb shocks, and the brake on the rear wheel shaft frame 81 is braked. Is installed and connected to the handle and the cable of the handle 70. The front wheel axle frame 2 is provided with two left and right front axle shock absorbers 5 to buffer the handle 70. The present invention provides a driving method. It is expected that it will be very convenient when moving in conjunction with a car or public transportation, making the body smaller and more convenient.

Transmission gearbox, pedal, front wheel axle frame, front axle shock absorber, cable for chain linkage, spokes, handle, cylindrical connector front axle frame.

Description

Front wheel drive and rear wheel steering bikes {A bicycle by rear wheel steering, front wheel driving.}

1 is an overall side perspective view according to an embodiment of the present invention.

2 is a cross-sectional view of a transmission gear apparatus according to an embodiment of the present invention.

3 is a partial perspective view of a transmission gear apparatus according to an embodiment of the present invention.

4 is a partial perspective view of the rear wheel rudder according to the embodiment of the present invention.

5 is a left turn situation diagram according to an embodiment of the present invention.

Figure 6 is a right turn situation according to an embodiment of the present invention.

7 is a diagram showing a main body stretching according to an embodiment of the present invention.

(Code description of main parts of drawing)

1: Transmission Gear Unit 2: Front Wheel Shaft Frame

3: cylindrical connector front axis frame 4: body auxiliary frame

5: front shaft shock absorber 6: shaft bearing connector

7: rubber tube for handle 8: cylindrical connector heel frame

9: tubular connector frame fasteners

11: pedal 12: pedal upper arm

13 pedal lower arm 14 tension spring for arm tightening

15, 16: tension spring latch 17: pedal shaft

19: Transmission gear cover bearing 20: Spring disc for one direction rotation

21: spring latch for one direction rotation 22: pedal shaft gear

24,29: Gearbox for shifting gears 26, 27: Auxiliary gear bearing

28: auxiliary gear shaft fixing bracket 31: wheel shaft gear

35: wheel shaft gear fixing bolt 36: shift gear output cover

37: transmission gear input cover 38: cover hub

39: spoke 40: front wheels

50: Hendle's rotating chain gear cover 51: Chain guide

52, 62: Hendle shaft, rear wheel shaft 53, 63: Chain gear

54, 64: chain 55, 65: cable for chain connection

60: rear wheel rotation chaingear cover 70: Hendle

80: rear wheel 81: rear wheel shaft frame

82: shaft bearing for connecting the rear axle 83: brake

90: saddle bicycle 92: saddle height fastener

93, 94: saddle cushion 99: handle restoring spring

100: ground

The present invention is a significantly different structure from the existing bicycle to change the direction by installing a pedal including the transmission gear device (1) on the front wheels, and the chain gears (53, 63) on the handle lower and rear wheel shaft It's about a two-wheeled bicycle.

For a long time, bicycles have been loved as the eco-friendly and economical means of transportation that can move the fastest without the use of fuel and only depend on the manipulator's leg strength, and hundreds of millions of bicycles around the world still race on the road. For this reason, bicycles also progress every year. Although there are various technological advancements such as using a new material to make the body lighter and fold the frame to facilitate transportation, the basic bicycle frame remains unchanged. Connecting the front wheels and rear wheels to the frame, the pedal shaft is installed in the middle of the two wheels, the driving of the pedal is transmitted to the rear wheel portion, the front wheel is fixed with the handle is a conventional bicycle conventional technology. In addition, technical advances such as gears for speed and power distribution are easily installed to climb the hills. In the past, bicycles have been used as short-distance means of transportation, and lightweight and folding bicycles have been exhibited in consideration of movements related to automobiles or public transportation, but there are limitations in reducing the volume due to the principle limitations. I think.

The present invention has been made in order to overcome the above problems, the object is to remove the space occupied by the pedal in the existing bicycle by mounting the pedal (11) to the shaft of the front wheel as a method for reducing the length of the bicycle In this case, the conventional bicycle is to incorporate the transmission gear device (1) in the front wheel equipped with the pedal in consideration of the speed of the rear wheel per rotation of the pedal shaft 2-4 turns.

In addition, the pedal 11 is difficult to change the direction by the foot pressing the pedal when changing the direction because the front wheel 40 is installed. In order to solve this problem, the front wheel shaft and the handle shaft are separated, and the chain gears 53 and 63 are installed on the handle shaft and the rear wheel shaft, and the steering wheel is provided with a redirection device which can move in conjunction with the rear wheel.

In addition, since the pedal 11 is installed on the front wheel and both legs are in close contact, the pedal arms 12 and 13 are divided into two in consideration of the need to bend the legs a lot when the pedal approaches the top of the wheel. When entering the upper arm is configured to reduce the length of itself.

In addition, the longer the distance between the front wheel and the rear wheel, the more stable it is, but the overall length of the bicycle is increased, so when you are not used to it, you can widen the distance between the two wheels, and when you are good at using the bicycle, you can narrow the distance by simple operation of the user. The frame is constructed to reduce the overall length.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the present invention in more detail as follows. 1 is an overall side perspective view according to an embodiment of the present invention, the pedal shaft 17 is fixed to the center of the front wheel in which the transmission gear device 1 is built, and the shaft bearing connector ( The handle shaft 52 whose shaft is separated by 6) fixes the handle 70. Another pair of tubular connector front axle frames (3) of the front wheels (40) are secured by a detachable tubular connector heel frame (8) and a tubular connector frame fastener (9), and a cylindrical connector heel frame (8). ) Maintains the center of the rear wheel 80 by fixing the axial bearing 82 for the rear axle connection. A body auxiliary frame 4 is installed between the two frames 2 and 3 of the front wheel 40. The support of the bicycle saddle 90 is installed where the lower part of the frame 4 and the cylindrical connector front axle frame 3 meet, so that the front wheel 40 and the bicycle saddle 90 have three frames (2, 3, 4). Direction is fixed, the rotation chain gear cover 50 of the handle fixed to the handle shaft 52 of the handle 70 and the rear wheel rotation chain fixed to the rear wheel shaft frame 81 of the rear wheel 80 The gear cover 60 is connected to the chain connecting cables 55 and 65 so that the rear wheel 80 rotates in conjunction with the rotation operation of the handle. In addition, as in a general bicycle, two bicycle shock absorbers 93 and 94 are installed on the support of the bicycle saddle 90 to absorb shocks, and a brake brake 83 is provided on the rear wheel shaft frame 81. It is installed and connected to the handle and the cable of the handle 70. The front wheel shaft frame (2) is provided with two front axle shock absorbers (5) to cushion the handle (70).

The detailed configuration and operation process of the front wheel drive and rear wheel directional bicycle according to the present invention having the configuration as described above are divided into a pedal arm variable device, a drive device of a front wheel, a direction adjusting device, and an inter-axis distance adjusting device, which is a configuration for each function. The explanation is as follows.
The pedal arm variable device will be described in connection with a cross-sectional view of a transmission gear device according to an embodiment of the present invention of FIG. 2 and a partial perspective view of the transmission gear device of FIG. 3 as follows. The right pedal 11-1 is in a state of applying a force to the pedal by the leg, and the left pedal 11-2 is in a state of being raised upward in association with the right pedal 11-1 without applying force. to be. When the force is applied to the pedal, the pedal lower arm 13, which is fitted to the square pipe of the pedal upper arm 12, is exposed to the limiting elasticity of the tension spring 14 for tightening the arm, and the arms 12 and 13 of the pedal are extended. The pedal shaft 17 is rotated on the principle of the lever. At this time, the opposite pedal arms 12 and 13 are contracted to the maximum by the restoring elastic force of the tension spring 14 for tightening the arm, and the knee portion of the leg placed on the pedal 11-2 is raised only to an appropriate height.

The driving device of the front wheel will be described in connection with a partial cross-sectional view of the transmission gear device according to the embodiment of the present invention of FIG. 2 and the transmission gear device of FIG. 3 as follows. The rotation of the pedal shaft 17 rotates the spring disk 20 for one direction rotation, and the pedal shaft gear 22 is rotated by the spring latch 21 for the one direction rotation which stands with elastic force. At this time, in the reverse rotation of the pedal shaft 17, the one-way rotation spring latch 21 is seized and is not bitten by the pedal shaft gear 22 so as to be idle. That is, when the front wheel 40 is moved by the force of inertia, the pedal 11 does not turn along. The rotation of the pedal shaft gear 22 rotates the auxiliary gear 25 which is composed of one body and is fixed to the auxiliary gear assembly shaft fixing bracket 28 by the auxiliary gear bearings 26 and 27. The shift gear bundle 25 is composed of two gears of different diameters, one of which has a small diameter sub-gear 24 engaged with a large-diameter pedal shaft gear 22, and the other of which has a wheel shaft gear 31. Composed of a large diameter secondary gear 29 meshing with the pedal shaft 17 was configured to obtain a wheel shaft rotation of 2-4 revolutions per revolution. The wheel shaft gear 31 is fixed to the two bearings 33 and 34 and rotates, and does not interlock with the pedal shaft 17 at all. This wheel axle gear 31 is engaged with the shift gear output part cover 36 by means of two rows of wheel axle gear fixing bolts 35 to output the shift gear at the same speed as the rotation of the wheel axle gear 31. The sub cover 36 is rotated so that the wheel 40 rotates. In this case, the shift gear output part cover 36 is rotated by being bolted to the shift gear input input cover 37, which is fixed to the bearing 19 and does not interlock with the pedal shaft 17. A bolt coupling hole and a hole for inserting the spokes 39 may be formed at the coupling protrusion surfaces of the two covers 36 and 37 coupled by bolts, so that the spokes 39 may be mounted. This spoke 39 is coupled to the wheel ring and the front wheel 40 is composed of a tube and a tire, which is represented by the rotation of the wheel part 2 to 4 times faster with one rotation of the pedal shaft 17.

The direction adjusting device is described below with reference to a partial perspective view of the rear wheel rudder according to the embodiment of the present invention of FIG. 4, a left turn situation diagram of FIG. 5, and a right turn situation diagram of FIG. 6. The rotation chain gear cover 50 of the handle located at the top of FIG. 4 is fixed to the shaft bearing connector 6 of FIG. 1, and a chain gear 53 interlocked with the handle shaft 52 is installed therein. The chain gear 53 is held by the chain 54 so that the rotation of the handle 70 pushes and pulls the chain 54. At this time, the chain 54 is connected to the chain connecting cables 55 and 65, and also the rear wheel portion. It is connected to the chain 64, by rotating the chain gear 63 installed in the rear wheel rotation chain gear cover 60 fixed to the rear wheel shaft frame 81 of Figure 1 to eventually rotate the rear wheel shaft (62). In addition, the handle restoring spring 99, which is fixed to the chain gear 53 of the handle and has a constant restoring force, is stable because it has an effect of reducing the handle 70 in a straight direction. 5 shows that when the handle 70 is rotated by a predetermined angle 56 to the left in a left turn situation, the rear wheel 80 is rotated by an angle 66 by the chain connecting cables 55 and 65 connected in the reverse direction. Here, the ratio of the rear wheel side corresponding angle 66 to the steering wheel operating angle 56 is determined according to the ratio of the diameter of the chain gear 53 of the handlebar and the chain gear 63 of the rear wheel. 1: 1 ratio is the most stable. Figure 6 is a right turn can be turned right on the same principle as the left turn situation diagram listed above.

The shaft-to-axis distance adjusting device is described as a configuration diagram of the main body stretch according to the embodiment of the present invention of FIG. Loosen the pair of cylindrical connector heel frames (8) by an appropriate amount by releasing the cylindrical connector frame fasteners (9) (98) and tightening the cylindrical connector frame fasteners (9) again, increasing the distance between the front wheel axle and the rear wheel axle. Easy to center. The longer the user becomes more skilled, the shorter this length will be. When increasing the distance between the front and back, the chain connecting cable (55,65) is made from the length of the beginning, and the chain gear cover (50, 60) consists of a vinyl hose so that the chain connecting cable (55,65) can move freely. ) And the bolt is fixed, the vinyl hose is fixed to the chaingear cover (50, 60) and only the cable inside the vinyl hose is moved can secure a sufficient cable for chain connection. In addition, the bicycle saddle 90 was configured to enable the height adjustment (97) by utilizing the saddle height fixing bracket (92).

As described above, the present invention is a bicycle in which a driving method and a change of direction are remarkably different from a conventional bicycle, and, above all, a very convenient surface is expected to be made when the body is made small and easy to move in conjunction with a car or public transportation. In addition, the rotation method is significantly different from the conventional bicycle, the rear wheel operation method can encourage the curiosity of the teenagers is expected to play a part in the popularization of the bicycle.

Claims (5)

       When the pedal upper arm 12 and the pedal lower arm 13 fitted to the square pipes of the pedal upper arm 12 rotate the rotary shaft 17 by applying a force to the right pedal 11-1, The upper pedal and lower arms 12 and 13 are extended by the limiting elasticity of the tension spring 14, and the opposite pedal upper and lower arms 12 and 13 are contracted by the restoring elastic force of the tension spring 14 for tightening the arm. A pedal arm variable device; Two gears with different diameters, which are fixed to the two gears of the front wheels (40) by two gears (36,37), with the auxiliary gear bearings (26, 27) on the shaft fixing brackets (28). Shifting gear composed of a gear, one side of which has a small diameter auxiliary gear 24 to be engaged with the large diameter pedal shaft gear 22, and the other side of which has a large diameter auxiliary gear 29 to mesh with the wheel shaft gear 31; An auxiliary gear bundle 25 for driving the front wheels configured to obtain wheel shaft output of 2-4 revolutions per revolution of the pedal shaft 17; The chain 54 is bitten by the chain gear 53 which interlocks with the handle shaft 52 in the rotation chain gear cover 50 of the handle 70 fixed to the shaft bearing connector 6, and the chain 54. Is connected to the chain connecting cables 55 and 65 and connected to the rear wheel sub-chain 64, thereby turning the chain gear 63 installed on the rear wheel chain gear cover 60 fixed to the rear wheel shaft frame 81, A direction adjusting device capable of rotating the rear wheel shaft 62; A pair of cylindrical connector heel frames (8) embedded in a cylindrical connector front shaft frame (3) joined by a pair of left and right wheels of the front wheel is operated by operating the cylindrical connector frame fasteners (9). Front wheel drive and rear wheel direction bicycle, characterized in that consisting of; the distance between the shaft length adjustment device is increased. delete delete delete delete

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