CN2236995Y

CN2236995Y - Foldable bicycle

Info

Publication number: CN2236995Y
Application number: CN 95225435
Authority: CN
Inventors: 姜志奎
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-11-02
Filing date: 1995-11-02
Publication date: 1996-10-09
Anticipated expiration: 2005-11-02

Abstract

The utility model relates to a foldable bicycle which relates to a bicycle for traveling. The utility model is composed of a bicycle frame, a front fork, a bicycle handle, a bicycle saddle, a front and a back wheels, a left and a right pedals and a drive mechanism, wherein, the bicycle frame comprises a main bicycle frame and an auxiliary bicycle frame, the main bicycle frame is formed by connecting the front bicycle frame and the back bicycle frame by a bicycle frame folding device, and the main bicycle frame can be folded forwards and backwards. The bicycle handle is composed of a left bicycle handle, a right bicycle handle and a draw hook, and the bicycle handle which is arranged on the top of a front fork by a handle seat and a short shaft is turned and folded up and down. The right pedal which is arranged on a centre shaft by a pedal connecting device, a short shaft and a top screw can be turned up and down. The utility model has the advantages of simple structure, good rigidity and convenient transportation. The utility model is convenient to fold and unfold, the volume of the utility model is small after folded, and the utility model occupies small area when stored in a folding way.

Description

Collapsible bicycle

The utility model relates to a kind of bicycle of riding instead of walk.

Bicycle is a kind of instrument of riding instead of walk, all is widely used in the city and the rural area of China, and particularly in the city, bicycle is still the main vehicle of student, working clan and general resident trip so far.Because China's urban population is many, density is big, the bicycle enormous amount in the city, according to incompletely statistics, the bicycle owning amount in one 3,000,000 population city is up to hundreds thousand of and even up to a million.So many bicycle driving is crowded self-evident, singly be that to deposit also be a great problem, it is serious to add the bicycle theft phenomenon, many residents have to bicycle is moved into indoor, make original more crowded to capacity with regard to narrow and small room, for the resident who lives in high-rise apartment building, remove car and upstairs can't bear the heavy load especially.In this case, Foldable bicycle arises at the historic moment.In general, Foldable bicycle reduces greatly through volume after folding, and both convenient carrying can reduce occupation space when depositing again, therefore is subjected to very much citizen, particularly high building apartment resident's welcome.According to the retrieval, Foldable bicycle design plan of the prior art reaches the hundreds of kind, folds with regard to main fold concertina-wise and the folded formula of side of adopting of folding mode.Make a general survey of the Foldable bicycle design plan of these patterns, though characteristics are respectively arranged, but owing to pursue the regular of the volume reduce after folding and shape, thereby folding position is generally lost too much, not only make the folding and expansion of bicycle become very loaded down with trivial details, and weakened rigidity when car load is ridden greatly, thereby increased the insecurity of riding.In addition, folding position too much also must make the process for machining and manufacturing of bicycle complicated, and manufacturing cost also improves relatively.

The purpose of this utility model promptly is to design less, the car load good rigidly in a kind of folding position, and it is convenient to fold and launch, and folding back is regular, the Collapsible bicycle that volume is little.

To achieve these goals, the bicycle frame folding unit of the utility model employing particular design connects front vehicle frame and back vehicle frame and makes it and can fold front and back.Bicycle frame folding unit is made of front and back hinge and minor axis and locating dowel pin, the front and back hinge respectively with the welding of front and back vehicle frame, both can rotate around minor axis, can utilize the locating dowel pin location again, guaranteed the rigidity of car load.Meanwhile, employing handle seat and drag hook are installed in the left and right sides handlebar top of front fork and left and right sides handlebar can be spun upside down respectively folding, reduce volume after folding effectively and make it regular.In addition, adopt the pedal adaptor union, minor axis and jackscrew are installed in the axis right side with right pedal and can spin upside down foldingly, further reduce volume after folding and make it more regular.For the ease of the lifting of vehicle seat with turn to an additional spanner on vehicle seat binding bolt nut.Be described in further detail below in conjunction with the technical characterictic of specific embodiment the utility model Collapsible bicycle.

Accompanying drawing 1 is the structural representation of the utility model Collapsible bicycle;

Accompanying drawing 2 and accompanying drawing 3 are respectively front elevation and the lateral plan after the utility model Collapsible bicycle folds;

Accompanying drawing 4 is the structural representation of handlebar;

Accompanying drawing 5 and accompanying drawing 6 are respectively the front elevation and the birds-eye view of bicycle frame folding unit;

Accompanying drawing 7,8,9 is respectively right pedal and faces, overlooks and left view.

1-9 with reference to the accompanying drawings, the utility model Collapsible bicycle mainly is made up of vehicle frame, front fork, handlebar, vehicle seat, front and back wheel and left and right sides pedal and transmission device.

Vehicle frame comprises that main car frame and subframe 1, main car frame are similar to V-arrangement, is formed by connecting by bicycle frame folding unit 4 by front vehicle frame 2 and back vehicle frame 3, and axis 5 is equipped with in its bottom.Bicycle frame folding unit is formed by connecting by minor axis 8 by preceding hinge 6 and back hinge 7 and can rotates around minor axis 8.Preceding hinge 6 and front vehicle frame 2 welding, back hinge 7 and 3 welding of back vehicle frame, have the loose pin 9 and the guide 10 of working in coordination on back hinge and the preceding hinge respectively, the top of location lock 9 has a drop handle 11, locating dowel pin 9 can be proposed from guide 10 or insert by drop handle 11.

Front fork 12 is installed in the front end of front vehicle frame 2.Vehicle seat 13 is installed in the rear end of back vehicle frame 3 by binding bolt 14, and the lifting of vehicle seat for convenience and turning to has a spanner 15 on the binding bolt nut.Handlebar is made of left handlebar 16, right handlebar 17 and drag hook 18, a left side handlebar 16 and right handlebar 17 be by being installed in seat 19 and minor axis 20 and minor axis 21 left and right sides, top of front fork 12, left handlebar 16 and right handlebar 17 with seat 19 is worked in coordination and can spin upside down folding around minor axis 20 and minor axis 21 respectively.The two ends of drag hook 18 by link up with 22 and hook 23 be hooked on the handlebar of the left and right sides its adjustable length respectively.Front vehicle wheel 24 is a flower wheel, is installed in the lower end of front fork 12 by wheel shaft, and rear wheel 25 is a driving wheel, is installed in the rear end of subframe 1 by wheel shaft.

Transmission device comprises drive sprocket 26, flywheel 27 and chain 28, and drive sprocket 26 and flywheel 27 are installed in respectively on axis 5 and the rear vehicle shaft, and chain 28 is around between drive sprocket 26 and the flywheel 27 and works in coordination with it.Left foot is pedaled 29 left sides that are installed in axis 5, right pedal 30 by pedal adaptor union 31, minor axis 32 and jackscrew 33 be installed in axis 5 the right side and can be folding around the upset of minor axis 32 front and back.

When folding, at first take off handlebar drag hook 18 and left handlebar 16 and the upset downwards of right handlebar 17 difference is folding, unclamp back foot jackscrew 33 then and upwards overturn right pedal 30 folding.During folding stand, utilize drop handle 11 that locating dowel pin 9 is extracted from guide 10 earlier, to be break with front vehicle frame 2 and back vehicle frame 3 folding and make drive sprocket 26 outwardly with minor axis 8 then.At last, utilize spanner 15 to unclamp vehicle seat binding bolt 14, vehicle seat 13 is descended and turn to, promptly finish the folding of car load.Reversed in order during expansion.

The utility model folding point is few, and is folding and launch all easily, and particularly the rigidity of car load is guaranteed.Volume after folding is little and regular, is convenient to carrying, takes up an area of few when depositing.Therefore, being particularly suitable for the high-rise apartment building resident uses.

Claims

1, a kind of Collapsible bicycle of riding instead of walk is made up of vehicle frame, front fork, handlebar, vehicle seat, front and back wheel and left and right sides pedal and transmission device; Described vehicle frame comprises main car frame and subframe, and main car frame is similar to V-arrangement, and axis is equipped with in its bottom; Described front fork is installed in the front end of main car frame, and vehicle seat is installed in the main car frame rear end by binding bolt, and handlebar is installed in the top of front fork; Described front vehicle wheel is a flower wheel, is installed in the lower end of front fork by wheel shaft, and rear wheel is a driving wheel, is installed in the rear end of subframe by wheel shaft; Described left foot is pedaled the left and right sides that is installed in axis with right pedal respectively, described transmission device comprises drive sprocket, flywheel and chain, drive sprocket and flywheel are installed in respectively on axis and the rear vehicle shaft, chain is around between drive sprocket and the flywheel and works in coordination with it, of the present utility model be characterised in that described main car frame be formed by connecting by bicycle frame folding unit by front vehicle frame and back vehicle frame and can bicycle frame folding unit be before and after the break folding described handlebar by left handlebar, right handlebar and drag hook are formed, left side handlebar and right handlebar are by being installed in seat and minor axis the left and right sides, top of front fork and can spinning upside down folding around minor axis, the two ends of drag hook are hooked on respectively on the handlebar of the left and right sides, its adjustable length; Described right pedal is installed on the axis by pedal adaptor union and minor axis and jackscrew and can spins upside down foldingly around minor axis, and described vehicle seat binding bolt nut has handle.

2, Collapsible bicycle according to claim 1, it is characterized in that described bicycle frame folding unit is formed by connecting by minor axis and can be rotated around minor axis by preceding hinge and back hinge, preceding hinge and front vehicle frame welding, back hinge and back vehicle frame welding, have the loose pin and the guide of working in coordination on back hinge and the preceding hinge respectively, the locating dowel pin top has a drop handle.