RU87687U1 - FOLDING CITY BIKE - Google Patents

Abstract

Folding city bike, including frame, seat, front and rear wheels, pedals, steering wheel, front fork, chain transmission connecting the pedals to the rear wheel, characterized in that the steering wheel is made up of two feathers, each of which is installed in interconnected racks with spring clips installed in them, the saddle post through the axis of rotation is attached to the pedal carriage, the front strut with the front strut lock and the rear strut connected by the rear fork to the rear wheel are installed on the seat rack the rear fork lock and the rear fork lock are installed in the folded position, while the rear wheel is connected to the pedals by a double chain overdrive via an intermediate shaft.

Description

The invention relates to the field of trackless ground transportation and for the construction of a folding bike.

A large number of folding bikes are known. The most widespread are designs involving the rotation of two halves of the frame relative to each other in the horizontal plane and the rotation of the steering wheel. The advantage of such a constructive solution is its simplicity, and the disadvantages are not too high level of compactness and speed of folding the bike.

Known folding single-track vehicle (SU No. 1320117, IPC V62K 15/00, 1987), in which compactness is achieved by reducing the diameter of the wheels located after assembly in one plane. Folding bike is traditionally made two-wheeled, in which the saddle and steering wheel are mounted on their own racks, spaced apart from each other over a considerable distance.

The disadvantage of this bike is the reduction in ride quality, the inconvenience of landing, the danger during movement, since the saddle is located above the axis of the rear wheel, it may tip over when driving over a small obstacle.

Known folding bike containing a frame, a central node with pedals and cranks, front and rear wheels, cantilever located on one side on the swinging levers, freely adjustable steering wheel, a seat that can be folded (RU No. 2264945 MPK V62K 15/00, V62K 25/16 , B62K 25/30).

A disadvantage of the known bicycle is the complexity of the design, the complexity of folding and unfolding, the duration of these operations.

The invention solves the problem of simplifying the design of the bike, reducing the time of assembly and disassembly, increasing the compactness of the device.

The technical result is to reduce the time for folding and unfolding a bicycle, compactness, weight reduction.

The specified technical result is achieved by the fact that in a folding city bike including a frame, a seat, front and rear wheels, pedals, a steering wheel, a front fork, a chain gear connecting the pedals to the rear wheel, the new one is that the steering wheel is made of two feathers, each of which is installed in interconnected racks with spring clips installed in them, the saddle post is attached to the pedal carriage through the axis of rotation, the front strut with the front strut lock and rear s brace coupled rear fork with a rear wheel mounted on the frame rear fork latch and lock the rear fork in the folded position, the rear wheel via the intermediate shaft is connected to a double chain pedals overdrive.

Running the steering wheel with a composite of two feathers allows them to be folded along the axis of the bicycle.

The rear fork lock allows you to free the rear of the bike and rotate it along the axis of the bicycle along the axis of rotation of the pedals, which is automatically fixed by the rear fork lock in the assembled position.

The presence of the front strut retainer allows you to release the saddle post in one go, fold it back and lower the front strut to the frame.

The steering column lock allows the steering column to be released to lower back along the axis of the bicycle.

Due to the small diameter of the wheel, a double chain overdrive is used to reduce the speed of the pedals.

This bike travels the distance typical of a normal road bike with large diameter wheels in one pedal stroke.

Figure 1 shows a General view of the bike; figure 2 (photo) view of the bicycle in the working position; figure 3 (photo) shows the beginning of folding; figure 4 (photo) - shows the tipping of the saddle back; figure 5 (photo) shows the folding of the steering wheel feathers back; figure 6 (photo) shows the laying of the saddle on the feathers of the steering wheel forward; Fig. 7 (photo) front view of a folded bicycle; on Fig (photo) is a rear view of a folded bicycle.

Folding city bike contains a steering wheel made in the form of two feathers 1, each of which is installed in interconnected racks 2. They are equipped with spring retainers of feathers 3 for fixing the feathers of the steering wheel in the working position, and curved tubes 4 that make up the steering column. The steering column through the axis of rotation 5 is attached to the front fork 6. The latch of the steering column 7 is fixed to the axis of rotation 5 of the steering column and ensures the working position of the steering wheel. In the front fork 6, the front wheel is installed 8. Through the axis of rotation 9, the front of the bicycle is connected to the frame 10. The frame 10 is located low above the ground, which ensures a comfortable fit and fit. The rack 11 of the saddle 12 through the axis of rotation 13 is attached to the pedal carriage 14 mounted on the frame 10. On the rack 11 mounted struts 15 and 16 to ensure that the saddle 12 is fixed in the transport position. The brace of the front brace 17 is fixed on the strut 15. The lock of the rear fork 18 is mounted on the axis of rotation 13. The rear fork 19 is mounted on the strut 16. The rear wheel 20 is fixed to the rear fork 19. The rear wheel 20 is connected to the pedals 22 through the intermediate shaft 21. The rear fork lock 23 is installed on the pedal carriage 14 in the folded state. The pedal carriage 14 is connected to the rear wheel 20 and the intermediate shaft 21 with a double chain overdrive 24 to reduce the speed of the pedals 22. The wheels 8 and 20 are made of small diameter. The rear wheel 20 through the intermediate shaft 21 is connected to the pedals 22 with a double chain overdrive 24.

When the pedals 22 are rotated through the double chain drive 24 and the countershaft 21, the force is transmitted to the rear wheel 20. The latch 23 holds the rear of the bike when folded. Each feather of the steering wheel 1 rotates around a vertical axis in the uprights 2 and is fixed in position by a spring clip 3.

Folding the bike is as follows. When lifting the rear of the bicycle by the saddle rack 11 and pressing the lock of the rear fork 19, the rear fork of the bicycle 19 is released and rotated in a longitudinal plane along the axis of rotation of the pedal carriage 14. The rear fork 19 is locked in the turned position automatically using the lock 23 (Fig. .3).

When you press the latch 17 of the front strut 15 of the rack of the saddle 11, the saddle 12 is tilted back. The front strut 15 rotates forward and rests on the frame 10 (figure 4).

After releasing the clips 3, the feathers of the steering wheel 1 rotate along the bicycle. The steering column, including the steering wheel feathers 1, mounted on racks 2 with spring clips 3 and curved tubes 4, is released by the retainer 7 and released towards the pedal carriage 14 (Fig. 5).

The rack of the saddle 11 together with the saddle 12 is lowered towards the front fork 6 and rests on the axis of rotation 5 of the steering column (Fig.6).

The whole folding process takes less than ten seconds. Reverse transformation is even faster. All latches work automatically.

The movement of the bike is characterized by increased maneuverability. It is convenient to sit down and get off the bike. No special clothing is required for the ride. The frame is very low, so you can ride such a bicycle even in a dress, which is very convenient for women. The design of the bike is very reliable, easy to implement, practical and original. The problem of storage and transportation is completely resolved.

Claims (1)

Folding city bike, including frame, seat, front and rear wheels, pedals, steering wheel, front fork, chain transmission connecting the pedals to the rear wheel, characterized in that the steering wheel is made up of two feathers, each of which is installed in interconnected racks with spring clips installed in them, the saddle post through the axis of rotation is attached to the pedal carriage, the front strut with the front strut lock and the rear strut connected by the rear fork to the rear wheel are installed on the seat rack the rear fork lock and the rear fork lock are installed in the folded position, while the rear wheel is connected to the pedals by a double chain overdrive via an intermediate shaft.