KR20120037835A - Universal folding bicycle - Google Patents

Abstract

PURPOSE: A universal foldable bicycle is provided to functionally manufacture various types of bicycles by changing position of all parts which is structurally and ergonomically important. CONSTITUTION: A universal foldable bicycle comprises a front wheel(22), a front swing arm(4), a handle bar(9), a rear wheel(13), and a saddle(16). The front swing arm is attached on a head assembly(2) of a frame through a front arm(1). The handle bar is attached through a rotating joint(5), a telescopic rod(6), a handle bar shaft(8), or a handle bar attachment member(7). The rear wheel is attached in a rear swing arm(10) connected to a central assembly(11) mounted on the frame. The saddle is mounted on a telescopic stem(15) and attached to the end of the frame directly or with a pin(14). The front arm and the front swing arm are connected each other by a front joint(17) and a front wheel telescopic spring device(18) or the front joint and a front wheel spring device(19).

Description

Universal folding bicycle

The present invention relates to a universal folding bicycle.

Currently known types of folding bicycles are designed to be folded and stored in a pack having a size corresponding to the height of the bicycle or smaller.

Bicycles that are foldable in their own size are described in WO 97/10141. This bicycle is a universal type of men's bicycle. The bicycle is folded by rotating a rear fork composed of a chain support together with a rear wheel and a central portion of the bicycle toward the front wheel. The saddle swings backwards and the handlebars and pedals remain in place. This folding operation is not only time-consuming but also requires a tool, and the size of the bicycle in the folded state is not practical.

U. S. Patent No. 5,125, 678 describes a universal type of men's bicycle having wheels of a universal form. The bike is designed for quick folding by removing both wheels, removing the rear fork, and swinging the saddle support forward to the saddle tube. A tool is needed to fold this type of bicycle. In addition, the size is not suitable, and the design does not meet the ergonomic requirements.

The bicycle according to US Pat. No. 4,895,386 is capable of being folded and stored in a pack having a height corresponding to the height of the structure. The front wheel of the bicycle, which is installed on the fork, constitutes a unit with the head assembly, the handlebar attachment member and the handlebar in the front tube. The saddle together with the stem and the saddle tube constitute a second unit. There are two diagonal couplings between the handlebar assembly and the saddle tube, which are attached to the front and rear units by two alternating pins. The central assembly with pedals and rear wheels is attached to the lower connection. The bicycle is folded by rotating the connections about the pins respectively. At this stage, the bicycle is shortened and its rear portion is arranged in line with the front portion with the handlebars. The pedals and handlebars are not folded and remain in their original width. The disadvantage of this configuration is that the diameter of the wheels should be small, the chain should be open and have a relatively large size even after folding.

U. S. Patent No. 5,205, 573 discloses a compact, collapsible bicycle. This bicycle is described as a universal type men's bicycle with wheels of normal size. The folding of the bicycle is centered around the rear fork, which can be split at the position where the saddle support is attached to the chain support. After removing the front and rear wheels, the rear fork is divided and the saddle support is swinged forward to the saddle tube around the pin located under the saddle. The change delay swings forward of the front fork around the center pin. Rotating the handlebar 90 degrees completes the folding process. Although it is possible to fold the bike to a relatively small size, this process is time consuming and requires experience. In addition, tools are required. The configuration of the bicycle is limited in variability. For this reason, the bicycle of the above configuration is not useful to the general user.

U. S. Patent No. 4,634, 138 describes a bicycle having a frame, an elongated handlebar attachment member, and a long saddle stem in the form of a circle. The wheels of this bike have a small diameter. The overall configuration of this bike gives the impression of a scooter with pedals and handlebars. Folding the bike requires tools, risks of folding the pedals, open drive chains and limited design variability.

Bicycles according to US Pat. No. 4,598,923 are foldable to the size of the trunk. This bike has small diameter wheels. Folding of the bicycle is accomplished by sliding the front wheels into the hollow of the frame after the release of the auxiliary pins and rotating the front wheels backward. The handlebar is folded back after releasing the pins on the handlebar attachment. Folding the hollows of the frame and the long hollows of the saddle against each other forms a trunk. Remove the pedal and store it in the trunk. The disadvantage of the bicycle is that the front and rear wheels have a small diameter and, as a result, the rolling resistance on the unpaved road is too large. The structure itself is also sharp at the edges, resulting in a very high risk of injury.

Folding bicycles with wheel springing are disclosed in DE 4313832. The bike is based on a swing lever with a built-in rotary on the spring-loaded rear wheels relative to the main frame. The lever can be rotated forward and the front wheels are positioned by the folding mechanism of the front wheel swing lever. The size of the above folded bicycle does not provide any convenience for transportation.

The basic disadvantages of the bicycles are small wheel diameter, open chain, relatively large folded state, time-consuming folding, requiring skilled skills, the use of tools, and the stability of the bicycle. It is low and does not have springs for wheels and saddles.

This universal folding bicycle eliminates the disadvantages of existing configurations. The bike consists of a central assembly with pedals through the frame, handlebars, front and rear wheels, saddles and cranks. The front swing arm to which the front wheel is coupled is attached to the front arm connected to the head assembly. The adjustable handlebars are attached to the head assembly via rotating joints, telescopic handlebars rods or handlebar attachments. The rear wheel is attached to the rear swingarm. The rear swingarm is connected to a central assembly mounted on the frame, including a crank and a pedal. Saddles connected to the raised stems are mounted using pins on the rear of the frame or on the front of the frame. The front arm and front swing arms are interconnected by a front joint or front wheel spring or front wheel spring device. The rear swingarm is connected to the end of the frame via a rear wheel spring or rear wheel spring. The front wheel is attached to the front swing arm by a unidirectional free bearing, and the rear wheel is attached in a similar manner to the rear swing arm, which can be equipped with an auxiliary arm. The front release spring device or front wheel spring device, the rotary joint, the rear wheel spring device or the rear wheel spring device, the handlebar shaft, and the cranks connected to the pedal are all provided with quick release members. The saddle may be located inside the saddle swinging arm. The saddle is preferably provided with a retractable saddle spring device or a saddle arm spring device. The sunken saddle spring device is attached to the end of the frame, and the saddle arm spring device is attached to the center of the frame. The height of the handlebars is adjustable in the range of 600 to 1100 mm from the ground by telescopic rods and in the range of 290 to 620 mm from the saddle in the horizontal direction. The distance from the ground of the frame at the transverse may be 150 to 780 mm. The saddle is adjustable in the range of 70 to 150 mm in the horizontal direction before and after, and in the range of 500 to 1,100 mm in the vertical direction from the ground. In addition, it is preferable to have elasticity in the range of 55 to 125 mm from the ground. The handlebar axis limits the positioning of the handlebars and subsequently stabilizes the handlebars at the required position. The front and rear wheels preferably have elasticity in the range of 55 to 210 mm and the steering angle is in the range of 65 to 80 degrees. The axle base of the front and rear wheels should be in the range of 600 to 1,210 mm. Folding of the bicycle is done in the following way. Release the handlebar quick release member, rotate the handlebar 90 degrees to the vertical position, release the rotary joint quick release member, and then swing the handlebar above the mountain bike or to the rear of another type of bike. Thereafter, the front wheel spring type quick release member or front wheel spring quick release member is released, and the front wheel swing arm, fender, and front wheel spring type spring or front wheel spring mechanism with the front wheels coupled are moved to the center of the frame. . In this state, the saddle is slid outward from the sunken stem located on the saddle swingarm and equipped with a sunk saddle spring device or a saddle arm spring device and then swings to the center of the frame. The rear wheel swings with the rear swing arm, which may be provided with an auxiliary arm, to the center of the frame with its quick release members released. Pedals located at a height of 260 to 350 mm from the ground are removed with the crank with its quick release members released. Folding of the bicycle is not limited to the above process. Folding can begin from any part of the structure. The development takes place in the reverse order of the above process.

The bicycle in the folded state is square in shape with the same size as the front and rear wheels with front and rear wheels or fenders.

The bicycle described in the present invention has a front, rear wheel, saddle, and a complete spring device of the handle bar. It is thus possible to change the positions of all parts that are important in ergonomics and construction, including the distance of the central assembly from the ground, steering angle, front wheel track length, axle base, handlebars and saddle positions. Thus, it is possible to manufacture functionally various types of bicycles from children's bicycles, ladies' bicycles, road racing bicycles, and mountain bicycles. Ladies' bicycles have design variables that are safe, stable in steering, and provide comfortable driving even on the stone paved roads of the historic centre. The rear swing arms are equipped with transmission gears, which enable driving on ramps and on rough roads.

Urban bicycles have a low height frame from the ground to provide comfort when moving up and down. With this configuration, the foldable bicycle of the present invention is suitable for racing, play, and school, work, shopping, and moving to the inside and outside of the city.

Mountain bikes were developed for racing on paved and unpaved roads. The bike can be adjusted perfectly according to the adult's weight and height requirements.

Road bikes were developed primarily for racing on hardened roads for demanding users. The bike is capable of adjusting the handlebars to a lower position allowing high speed sprinting or an upper position for recreational exercise using narrow racing tires. This allows for a fast and comfortable run with less rolling resistance.

The saddle provided with a spring device allows for increased comfort when driving on a pavement.

Various variations of a child's bicycle to urban, racing or mountain use may also be used for the same purposes as the corresponding bicycle types for adults. These bicycles also have variations in the positions of the parts that are important in ergonomics and construction.

Another advantage of the present invention is that it is possible to manufacture bicycles with wheel diameters suitable for the individual motorcycle types. The size of the bicycle in the folded state corresponds to a square having the same side as the diameter of the wheel with wheels or fenders, and can be folded without any tools. The bike can be folded in the size of a trunk for easy transport as a personal cargo in a car, bus, train, plane, boat or elevator. Folding requires no skill and is less than 2 minutes. .

Application examples of the present invention to be protected by patents are shown in the accompanying drawings. 1 shows a side view of a ladies bicycle. Wheels and saddle spring arrangements and adjustable saddles, handlebars are intensively shown.
2 shows a side view of an urban bicycle. Springs of wheels and saddles and adjustable saddles, handlebars are intensively shown.
3 shows a side view of a mountain bike. Springs of wheels, saddles and handlebars and adjustable saddles, handlebars are intensively shown.
4 shows a side view of a road bike. Springs of wheels and saddles and adjustable saddles, handlebars are intensively shown.
Figure 5 shows a side view of the folding process of the wheels, saddles, and handlebars of a ladies' bicycle.
FIG. 6 is a front view of the folded ladies bicycle, FIG. 7 is a side view thereof, FIG. 8 is a rear view thereof, and FIG. 9 is a plan view thereof.
FIG. 10 shows a side view of the folding process of the wheels, handlebars and saddle of an urban bicycle, FIG. 11 is a side view of the frame with a folding pedal, FIG. 12 is a top view of the folded urban bicycle, and FIG. The front front view, FIG. 14 is a side view, FIG. 15 is the back side
It is also.
FIG. 16 shows a side view of a folding process of wheels, handlebars and saddles of a mountain bike, FIG. 17 is a front view of a folded mountain bike, FIG. 18 is a side view of the mountain bike, FIG. 19 is a rear view, and FIG. Top view.
FIG. 21 is a side view of a road racing bicycle, illustrating the folding process of wheels, handlebars, and saddles. FIG. FIG. 22 is a front view of the folded road racing bicycle, FIG. 23 is a side view thereof, FIG. 24 is a rear view thereof, and FIG. 25 is a plan view thereof.

Example 1

The universal folding bicycle of FIG. 1 consisting of a central assembly with pedals attached through a frame, handlebars, wheels, saddles and cranks is a ladies' bicycle. The bicycle is designed by attaching the front swing arm 4 to the front arm 1 via the front joint 17 and connecting the front swing arm 4 to the head assembly 2 of the frame 3. It features a prize. The front arm 1 and the front swing arm 4 are interconnected by a front wheel spring device 19 having a quick release member 19 '. The head assembly 2 is equipped with a rotary joint 5 having a quick release member 5 'and a handlebar 9 which is adjustable by the sunken rod 6. They are attached to handlebar 8 by quick release member 8 '.

A rear swing arm 10 is mounted on the central assembly 11 formed of the pedals, the crank 12 and the quick release member 12 '.

This rear swing arm 10 is located on the frame 3. The saddle 16 is positioned on the frame 3, and the end of the saddle 16 is connected with the sunken stem 15 and the sunken saddle spring device 24. The rear swing arm 10 and the end of the frame 3 are connected by a rear wheel spring device 21 having a quick release member 21 '. The front wheel 22 and the rear wheel 13 are attached to the front swing arm 4 and the rear swing arm 10 by unidirectional free bearings, respectively.

5 to 9 show the folding process of the wheels, the handlebars and the saddle and the respective views of the folded ladies' bicycle.

The bicycle is folded by releasing the handlebar shaft quick release member 8 'and rotating the handlebar 9 by 90 degrees to a vertical position. Thereafter, the rotary joint quick release member 5 'on the handlebar shaft 8 is released. Then, the handle bar 9 is swinged until it stops backward. In this state, the saddle 16 is swinged so that it can be slid along with the retractable stem 15 and the retractable saddle spring device 24. Thereafter, the saddle is moved horizontally until it stops forward. After the quick release member 19 'is released, the front wheel 22 is swinged downward. The front swing arm 4 along with the front wheel 22 is rotated about the front joint 17 to move to the center of the frame 3. After the rear wheel spring device quick release member 21 'is released, the rear wheel 13 swings downward. Then, the rear wheel 13 is moved to the center of the frame 3 while rotating about the central assembly (11). Finally, the quick release members of the pedals with the crank 12 'are released, and the pedals with the crank 12' are slid to the center of the frame 3. The unfolding operation of the bicycle is performed in the reverse order of the above process.

Example 2

The configuration shown in FIG. 2 is implemented in that the front swing arm 4 together with the front arm 1 is connected to the front wheel retracting spring device 18 via a front wheel retracting spring device quick release member 18 '. It is an urban bicycle different from the bicycle described in Example 1. An auxiliary arm 26 is mounted to the rear swing arm 10 via an auxiliary arm rotation joint 27. Rear wheel arm spring device 20 is attached to rear swing arm 10 via quick release member 20 '. Since the bicycle is an urban bicycle, the saddle 16 is not provided with the spring-loading device 24.

10 to 15 show the folding process of the wheels, the handlebars and the saddle and the respective views of the folded illustrated bicycle. This bicycle is folded in a manner similar to the bicycle described in Example 1. The difference is that the saddle 16 slides out with the sunken stem 15 and then swings. The saddle 16 is then inserted in the center of the frame 3. After releasing the quick release member 18 ', the front wheel 22 is swing-moved, and after releasing the quick release member 20', the rear wheel 13 is swing-moved.

The deployment operation of the bicycle is performed in the reverse order of the above process.

Example 3

3 shows a mountain bike having a different configuration from that of the second embodiment in that the handlebar 9 is mounted by the handlebar attachment member 7 of the head assembly 2. The bicycle does not have an auxiliary arm 26, but the saddle 16 is provided with a saddle swing arm 23. At the same position as the rear wheel retracting spring device 20, a retracting saddle spring device 24 is attached, all of which are connected to the frame 3.

16 to 20 illustrate the folding process of the wheels, the handlebars and the saddle and the respective views of the folded mountain bike. Folding of this bicycle is made similar to the folding process shown in the first embodiment.

Example 4

FIG. 4 has a configuration different from that of FIG. 1 in that the handlebar 9 having the handlebar shaft quick release member 8 'is mounted to the head assembly 2 by the handlebar attachment member 7. A racing bike is shown. The handlebar is capable of swinging upwardly about the handlebar shaft 8. The saddle 16 having a saddle swinging arm 23 is attached to the front end of the frame by a pin 14. The saddle arm spring device 25 is connected to the center of the frame 3. The rear wheel spring device 21 is attached to the rear swing arm 10 and the end of the frame 3 via the quick release member 21 '.

21 to 25 illustrate the folding process of the wheels, the handlebars and the saddle, and the respective views of the folded road racing bicycle. The folding process of the bicycle is performed in Example 1 except that the left and right sides of the handlebar 9 are moved upwardly about the handlebar shaft 8 after the quick release member 8 'is released. Similar to the folding process shown.

Front arm (1)
Head Assembly (2)
Frame (3)
Front swing arm (4)
Swivel Joint (5)
Retractable Rod (6)
Handlebar Attachment Member (7)
Handlebar Shaft (8)
Handlebar (9)
Rear swing arm (10)
Central Assembly (11)
Crank (12)
Rear wheels (13)
Pin (14)
Retractable Stem (15)
Saddle (16)
Front joint (17)
Front wheel type spring device (18)
Front wheel spring device (19)
Rear wheel retractable spring device (20)
Rear wheel spring device (21)
Front wheel (22)
Saddle Swing Arm (23)
Mounting Saddle Spring Device (24)
Saddle Arm Spring Device (25)
Secondary Arm (26)

Claims (17)

In the general-purpose folding bicycle composed of a central assembly with a pedal attached through a frame, a handlebar, a front wheel, a saddle, and a crank, the front swing arm 4 to which the front wheel 22 is coupled is connected to the front arm 1; The handlebar 9, which is attached to the head assembly 2 of the frame 3, and which is freely adjustable to the head assembly 2, by rotating the joint 5, the retracting rod 6 and the handlebar shaft 8. Rear swing arm (10) attached via a handlebar attachment member (7), the rear wheels (13) being formed of pedals and cranks (12) and connected to a central assembly (11) mounted to the frame (3). And a saddle 16 mounted to the sunken stem 15 to the front end of the frame 3 either directly at the end of the frame 3 or via the pin 14 and attached to the front arm 1. And the front swing arm 4 are interconnected by the front joint 17 and the front wheel spring type device 18 or the front joint 17 and the front wheel spring device 19. The rear swing arm 10 is connected to the end of the frame 3 by the rear wheel spring type device 20 or the rear wheel spring device 21, and the front wheel 22 and the rear wheel 13 are freely unilaterally. It is attached to the front swing arm 4 and the rear swing arm 10 by bearings, and the front wheel spring type device 18, the front wheel spring device 19, the rotary joint 5, and the rear wheel spring type device 20, quick release members 18 ', 19', 5 ', 20', on the rear spring device 21, the handlebar shaft 8 and the cranks connected to the pedal 12, A universal folding bicycle characterized by including 21 ', 8' and 12 '. The saddle (16) according to claim 1, wherein the saddle (16) is located inside the saddle swinging arm (23), and is provided with a retractable saddle spring device (24) or a saddle arm spring device (25). ) Is attached to the end of the frame (3), and the saddle arm spring device (25) is attached to the center of the frame (3). The general-purpose folding bicycle according to claim 1 or 2, wherein the rear swing arm (10) is provided with an auxiliary arm (26). 4. The height of the handlebars 9 according to any one of the preceding claims, wherein the height of the handlebars 9 is adjustable within the range of 600 to 1,100 mm from the ground by the sunken rod 6 and from 290 to the saddle in the horizontal direction. Universal folding bicycle, characterized in that adjustable in the range of 620 mm. 5. The general purpose folding bicycle according to claim 1, wherein the height of the frame (3) in the transverse section is from 150 to 780 mm from the ground. 6. The saddle 16 according to any one of claims 1 to 5, wherein the saddle 16 is adjustable in the range of 70 to 150 mm in the horizontal direction before and after, and in the range of 500 to 1,100 mm in the vertical direction from the ground. And elasticity in the range of 55 to 125 mm from the ground. 7. Universal folding according to one of the preceding claims, characterized in that the handlebar shaft (8) limits the positioning of the handlebar (9) and subsequent stabilization at one of the defined positions. bicycle. 8. The height of the rear wheel spring type device 20 or the rear wheel spring device 21 as well as the front wheel type spring device 18 or the front wheel spring device 19. Universal folding bike, characterized in that in the range of to 210mm. 9. A general purpose folding bicycle according to any one of the preceding claims, characterized in that the steering angle (28) of the front wheels (22) is in the range of 65 to 80 degrees. 10. Universal folding bicycle according to any one of the preceding claims, characterized in that the mandrel bases of the front wheels (22) and rear wheels (13) are in the range of 600 to 1,210 mm. 11. The handlebar (9) according to any of the preceding claims, wherein the handlebar (9) releases the handlebar shaft quick release member (8 '), rotates the handlebar (9) by 90 degrees to a vertical position, and rotates. A universal folding bicycle, which can be folded backward or upward while the joint quick release member 5 'is released. The front swing arm (4) according to any one of the preceding claims, wherein the front swing arm (4) comprises a front wheel (22), a fender (29) attached thereto and a front wheel retracting spring device (18) or a front wheel spring device (19). Universal folding type, characterized in that together with the release of the quick release member 18 'or 19' can swing to the center of the frame 3 The saddle (16) according to any one of the preceding claims, wherein the saddle (16) is in the state in which the sunk stem (15) is slid outwardly, or the sunk stem (15) has the sunk saddle spring device (24). Or a saddle arm spring device (25) with a saddle swing arm (23) attached to the universal folding bike, characterized in that the sliding movement to the center of the frame (3) in the sliding state. 14. The rear wheel (13) according to any one of the preceding claims, wherein the rear wheel (13) is with the rear swing arm (10) or with the auxiliary arm (26) with the quick release members (20 '), (21') released. A universal folding bicycle, characterized in that the swing moveable to the center of the frame (3). 15. The pedal according to claim 1, wherein the pedals located at a height of 260 to 350 mm from the ground can be removed with the crank 12 with the quick release members 12 ′ released. Universal folding bicycle. 16. The bike according to any one of claims 1 to 15, wherein the size of the bicycle in the folded state is equal to the diameter of the front wheel 22 having the front fender 29 or the diameter of the rear wheel 13 having the rear fender 30. A general-purpose foldaway bicycle, characterized by matching a square with the same side. 17. The universal folding bicycle according to any one of claims 1 to 16, wherein the folding bicycle is foldable without using any tools.

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