CN101259865A

CN101259865A - Small wheel-diameter folding bicycle

Info

Publication number: CN101259865A
Application number: CNA2007100379681A
Authority: CN
Inventors: 梁德
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-09
Filing date: 2007-03-09
Publication date: 2008-09-10
Anticipated expiration: 2027-03-09
Also published as: CN100558597C

Abstract

The invention relates to a foldable bicycle with small-size wheel diameter adopted, which is characterized mainly in that: a frame is a duplex four-bar linkage mechanism; wherein, the main structure of the frame consists of a front stand pipe (1), a rear stand pipe (2), a lower connector pipe (4) and a slider (3) and a saddle supporting structure consists of the front stand pipe (1), the rear stand pipe (2), a saddle stand pipe (5) and a saddle pull rod (6). The foldable bicycle has the advantages that: when the slider (3) slides upward along the axial direction of the front stand pipe (1), the frond end of the rear stand pipe moves upward and the rear end of the rear stand pipe moves forward and simultaneously pulls the saddle stand pipe (5) to move forward so as to achieve the longitudinal linkage of various components of the frame, thereby realizing the effect of front and rear shrinkage of the frame. The frame structure can be conveniently folded and has small floor area after being folded; besides, after folding, the front and rear wheels are in the same straight line so that the bicycle can be pushed without needing to be carried by hands; after a handle unit (9) is whirled at an angle of 180 DEG, the compliance steering of the front wheel unit (7) can be realized by pushing the bicycle using hands to hold the saddle (10).

Description

Small wheel-diameter folding bicycle

Technical field

What the present invention relates to is a kind of folding bicycle, particularly a kind of small wheel-diameter folding bicycle.

Background technology

In the prior art, the method for folding of folding bicycle is commonplace be rotation hinge along a certain position of central frame beam with the bicycle doubling, the problem that the folding bicycle of this folding mode exists usually mainly contains:

1. folding convenient inadequately, because car load is along the doubling of central frame beam part, in the doubling process since originally the operator be in the central frame beam position, carrying out along with the doubling process, the operator can be gradually away from original midway location, cause the increase of vehicle body single-piece control difficulty. in order to guarantee that folding aftercarriage has the shape and better firm degree of rule more, need to attach other folding part and fastening parts usually in addition, therefore also increased folding step.

2. it is convenient inadequately to carry after folding, and the bicycle of folded structure is had bigger width usually after folding, and the portable inconvenience of carrying in addition because folded structure is limit, generally is difficult to implementation after folding.

3. there is wedge angle outstanding behind the folding back, for public transport such as public transport, the occasion adaptive capacity that subway etc. relatively crowd is low. the design of the miniature folding bicycle in some similar steamboats footpaths is also arranged on the domestic and international market at present, but for the firm degree of vehicle body, the level of comfort of riding, the folding convenient degree and folding after the comfort level neither one carried hold concurrently and tool solution.

Summary of the invention

The present invention is to provide a kind of steamboat footpath that is suitable for short distance traffic, can fast folding and the folding bicycle conveniently carried.

Technical scheme of the present invention is, with chassis structure is duplex four-bar linkage (with reference to figure 1), by preceding standpipe (1), rear profile tube (2), following connecting leg (4) and slide block mechanism (3) constitute the main support of vehicle frame, i.e. first four-bar linkage, and slide block (3) can move along preceding standpipe (1), when slide block (3) was locked on the preceding standpipe (1), this four-bar linkage promptly formed the three-legged structure of high stability; By preceding standpipe (1), rear profile tube (2), saddle standpipe (5) and saddle pull bar (6) constitute second four-bar linkage that supports saddle (10), after first four-bar linkage fixedly becomes three-legged structure, preceding standpipe (1) and relative locking the in rear profile tube (2) position, this moment, the saddle supporting construction also formed stable three-legged structure. when slide block (3) along preceding standpipe (1) when moving up, the individual component part that constitutes vehicle frame will be realized interlock and vertically be contracted to folded state, at this moment with the slide block locking, vehicle frame promptly is in tightening state, need not increase catch gear in addition.

Description of drawings

Fig. 1, each component part numbering of car load;

Fig. 2, the version before car load is folding;

Fig. 3, the version after car load is folding;

Fig. 4, preceding standpipe structure, outer tube (A) is an one-piece construction;

Fig. 5, preceding standpipe structure, outer tube (A) is a split-type structural.

The specific embodiment

Above described before standpipe (1) comprise outer tube (A) and interior pipe (B), interior pipe (B) places in the outer tube (A), and connects to be implemented in the outer tube (A) by bearing and rotate, the outer tube structure form of preceding standpipe (1) has two kinds of principal modes:

1. one-piece construction (Fig. 4);

External riser (A) is longer relatively, and slide block (3) directly acts on outer tube (A) outer wall, can slide up and down or locking along the outer tube axis direction.

2. split-type structural (Fig. 5).

External riser (A) is relatively short, and slide block (3) directly acts on interior pipe (B) outer wall, and slide block (3) can slide up and down or locking along interior pipe (B) axis direction, and interior pipe (B) can rotate in slide block (3) realizes the front-wheel steering function.

After vehicle frame shrank, with handlebar unit (9) Rotate 180 degree, the vehicle body single-piece took up an area of the space and further reduces, and when hand was held saddle unit (10) implementation, preceding wheel unit (7) can be realized follow-up steering.

In order to make the structure after folding compact more, the wheel that front and back wheel the adopted footpath of car is with 8 inch, and 10 inch or 12 inch are advisable.

This kind body frame structure for automotive is supported saddle height adjustment and handle height adjustment, can be suitable for different crowd and use.

The support of this kind body frame structure for automotive increases the front and back wheel shock mitigation system, and bumper can be built in the interior pipe B of preceding standpipe (1) and in the rear profile tube (2).

The invention has the advantages that:

1. folding convenient only namely can be realized the interlock contraction of vehicle frame integral body by moving slider.

2. body frame structure for automotive is take triangle as the basis, and rigidity is better.

3. carry conveniently, folding back front and back wheel in-line is directly carried out, but the front-wheel follow-up steering, need not be portable.

4. it is little that the space is taken up an area of in folding back, and thickness is little.

Claims

1. fast folding bicycle, comprise preceding wheel unit (7), rear wheel unit (8), handle unit (9) and saddle unit (10) and vehicle frame, wherein vehicle frame comprises preceding standpipe (1), rear profile tube (2), slide block (3), following connecting leg (4), saddle standpipe (5), and saddle pull bar (6), it is characterized in that: vehicle frame is the duplex four-bar linkage, wherein by preceding standpipe (1), rear profile tube (2), following connecting leg (4) and slide block (3) constitute the agent structure of vehicle frame, and, slide block (3) and following connecting leg (4), following connecting leg (4) and rear profile tube (2), rear profile tube (2) is hinged respectively with preceding standpipe (1), and slide block is installed on the preceding standpipe (1), and can slide and the location along preceding standpipe (1); By preceding standpipe (1), rear profile tube (2), saddle standpipe (5) and pull bar (6) constitute the saddle supporting construction, and, rear profile tube (2) and saddle standpipe (5), saddle standpipe (5) and saddle pull bar (6), saddle pull bar (6) and preceding standpipe (1) dumpling respectively connect.

2. small wheel-diameter folding bicycle according to claim 1, it is characterized in that: when slide block (3) along preceding standpipe (1) when upwards sliding, following connecting leg (4) front end moves up, the rear end moves forward, rear wheel unit (8) wheel unit (7) is forward drawn close, spur saddle standpipe (5) simultaneously and move forward, saddle unit (10) are drawn close to handle unit (9), reach each component part interlock of vehicle frame and realize the result that shrink the vehicle frame front and back.

3. small wheel-diameter folding bicycle according to claim 1, rear wheel unit (8) are installed in down connecting leg (4) rear end, and rear wheel drive system is installed in down on the connecting leg (4).

4. small wheel-diameter folding bicycle according to claim 1, its preceding standpipe (1) comprises external riser (A) and internal riser (B), internal riser (B) captive joint handle unit (9) and preceding wheel unit (7), and can rotate with respect to external riser (A).

5. fast folding bicycle according to claim 1, in order to realize necessary structure function, each component part of its vehicle frame is assembled by various parts.