CN2910764Y

CN2910764Y - Folding and portable bicycle

Info

Publication number: CN2910764Y
Application number: CN 200620124727
Authority: CN
Inventors: 隋东生
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-07-04
Filing date: 2006-07-04
Publication date: 2007-06-13
Anticipated expiration: 2016-07-04

Abstract

A folding and portable bicycle belongs to a small wheel folding bicycle and comprises a handle (1), a front fork (2), a back vertical girder (3), a bicycle seat (4), a pedal (11), a front wheel (5) and a back wheel (12), wherein, two intersectional large support frames are arranged between the front fork (2) and the back vertical girder (3). A central shaft (10), a wheel plate (13) and the pedal (11) are arranged on the intersection of the support frame. Each large support frame is formed by two small support frames which are hinged together. The large frame comprising the small support frames (6) and (9) are separately hinged on the top of the front fork (2) and the bottom of the back vertical girder (3), while the large support frame comprising the small frames (7) and (8) are hinged on the bottom of the front fork (2) and the top of the back vertical girder (3). A wheel plate (14) is arranged on the central shaft of the support frame (9) and forms a second-level transmission with the wheel plate (13) of the central plate. The first-level transmission is that the chain transmits to the wheel plate (14) by the wheel plate (13), while the second-level transmission is that the chain is transmitted to the back wheel by the wheel plate (14). The utility model is of large speed reducing rate, simple structure, good rigidity of the intersectional support girder, fast and convenient folding, portable wheels for dragging and pushing after folding.

Description

The easily pulled and folded portable bicycle

Technical field

The utility model is a kind of bicycle, particularly a kind of collapsible trundle bicycle.

Background technology

In daily life, bicycle is extraordinary walking-replacing tool, but depositing is a very big problem, folding bicycle has the little portable characteristics of taking up an area of, but folding of bicycle still volume is bigger than normal, reason is that wheel is very big, reduce wheel then speed ratio reduce, usually folding bicycle rigidity after expansion is very poor in addition, thereby impracticable, is difficult to promote.

Summary of the invention

The purpose of this utility model is to overcome the deficiency that above-mentioned known technology exists, thereby provides a kind of transmitting ratio height, good rigidly, be convenient to the easily pulled and folded portable bicycle that push-and-pull is carried.

The purpose of this utility model realizes in the following way:

This easily pulled and folded portable bicycle is by handlebar 1, front vehicle fork 2, back vertical tube 3, vehicle seat 4, pedal 11, front-wheel 5 and trailing wheel 12 are formed, wherein: the big support that has two intersections between front vehicle fork 2 and the back vertical tube 3, the support infall has axis 10, wheel disc 13 and pedal 11, every big support is respectively by two hinged forming of small rack, by small rack 6, the upper end of the 9 hinged front vehicle forks of forming 2 of big supports difference and the lower end of back vertical tube 3, by small rack 7, the lower end of the 8 hinged front vehicle forks of forming 2 of big supports difference and the upper end of back vertical tube 3, support 9 also has wheel disc 14 at the axis place, form the secondary transmission with axis wheel disc 13, chain is transferred to wheel disc 14 by wheel disc 13 and is the one-level transmission, and it is the secondary transmission that chain is transferred to trailing wheel by wheel disc 14.

Have bearing on the front vehicle fork 2 and be used for hinged big support.

Front vehicle fork 2, back vertical tube 3 connect for sleeve-type, are convenient to shrink.

Handlebar 1 folding backward.

The utility model compared with prior art has following advantage:

1, adopt multistage transmission, reduction ratio is big, can reduce the wheel footpath.

2, simple in structure, intersection strutbeam good rigidly.

3, folding quick and convenient, folding back two-wheeled lands can light push-and-pull.

Description of drawings

Fig. 1 is a structure diagram of the present utility model.

Fig. 2 is a folding scheme drawing of the present utility model.

Fig. 3 is the axis structural representation.

In Fig. 1: 1 handlebar; 2 front vehicle forks; 3 back vertical tubes; 4 vehicle seats; 5 front-wheels; 6 supports; 7 supports; 8 supports; 9 supports; 10 axis; 11 pedals; 12 trailing wheels; 13 wheel discs; 14 wheel discs.

The specific embodiment

See Fig. 1: this easily pulled and folded portable bicycle is by handlebar 1, front vehicle fork 2, back vertical tube 3, vehicle seat 4, pedal 11, front-wheel 5 and trailing wheel 12 are formed, wherein: the big support that has two intersections between front vehicle fork 2 and the back vertical tube 3, the support infall has axis 10, wheel disc 13 and pedal 11, every big support is respectively by two hinged forming of small rack, by small rack 6, the upper end of the 9 hinged front vehicle forks of forming 2 of big supports difference and the lower end of back vertical tube 3, by small rack 7, the lower end of the 8 hinged front vehicle forks of forming 2 of big supports difference and the upper end of back vertical tube 3, support 9 also has wheel disc 14 at the axis place.Form the secondary transmission with axis wheel disc 13, chain is transferred to wheel disc 14 by wheel disc 13 and is the one-level transmission, and it is the secondary transmission that chain is transferred to trailing wheel by wheel disc 14.

Have bearing on the front vehicle fork 2 and be used for hinged big support.

Handlebar 1 folding backward.

By shown in Figure 2, axis is upwards carried during folding, each support draws in to the centre by each hinge and lumps together, and two-wheeled lands and is convenient to carry out.

See Fig. 3: support 9 has two clamping plates and forms twin beams, and tubular bracket 7 is by passing between the twin beams and hinged by axis.

Claims

1, a kind of easily pulled and folded portable bicycle, by handlebar (1), front vehicle fork (2), back vertical tube (3), vehicle seat (4), pedal (11), front-wheel (5) and trailing wheel (12) are formed, it is characterized in that: the big support that has two intersections between front vehicle fork (2) and the back vertical tube (3), the support infall has axis (10), wheel disc (13) and pedal (11), every big support is respectively by two hinged forming of small rack, by small rack (6), the upper end of the big support hinged front vehicle fork of (9) forming of difference (2) and the lower end of back vertical tube (3), by small rack (7), the lower end of the big support hinged front vehicle fork of (8) forming of difference (2) and the upper end of back vertical tube (3), support (9) also has wheel disc (14) at the axis place, form the secondary transmission with axis wheel disc (13), chain is transferred to wheel disc (14) by wheel disc (13) and is the one-level transmission, and it is the secondary transmission that chain is transferred to trailing wheel by wheel disc (14).

2, easily pulled and folded portable bicycle according to claim 1 is characterized in that: have bearing on the front vehicle fork (2) and be used for hinged big support.

3, easily pulled and folded portable bicycle according to claim 1 is characterized in that: front vehicle fork (2), back vertical tube (3) connect for sleeve-type.

4, easily pulled and folded portable bicycle according to claim 1 is characterized in that: handlebar (1) folding backward.