CN201052823Y - Portable antifouling folding bicycle - Google Patents

Abstract

The utility model relates to a portable dirtproof folding bicycle which can be folded to reduce the volume of the bicycle and is additionally provided with a speed-increasing gear for reducing the wheel radius, a dirtproof sleeve for keeping the outside of the bicycle clean and assistant wheels for the convenient pulling of the bicycle; the structure of the utility model is that: the utility model comprises a front upright tube, a back upright tube and a horizontal tube which are all made into retractable forms, wherein both ends of the horizontal tube are provided with a folding device respectively, both sides of a connecting point between a handle and the front upright tube are provided with a folding device respectively; by additional arrangement of the speed-increasing gear, the transmission ratio is increased and the wheel radius is reduced; by the retraction and folding, the volume of the bicycle is reduced; by the additional arrangement of the assistant wheels, the pulling of the folded bicycle is convenient. The portable dirt proof folding bicycle of the utility model has the advantages of small storage space, clean outside and the convenient pulling of the folded bicycle without lifting the whole bicycle; moreover, the utility model can be made of common materials and simple parts.

Description

Portable anti-soil foldable bicycle

Technical field

The utility model relates to a kind of bicycle, particularly by change vehicle structure, reduce wheel diameter, folding stand realizes dwindling the car stowage space, keep the outside vehicle cleaning by installing dirt proof sleeve additional, by installing the bicycle that tows after auxiliary steamboat conveniently folds additional.

Background technology

Existing bicycle particularly folded bicycle brings convenience for people's trip, but still fail to satisfy fully people's trip needs, especially can not be as dragging packet to bring folding bicycle into bus or subway train, to solve between door and the initial station, get to the station and the final destination (as the working place) between a trip difficult problem, in addition, if will have bus or subway train on the folded bicycle band now, expose the lubricating oil of chain and chain drum, expose the earth of wheel, besmirch passenger's clothing easily, bicycle as Chinese patent 200520107711 announcements, use new material to come expendable weight, reduced volume, but cost increases, cost an arm and a leg, seriously limited popularizing of this kind bicycle; The cycle frame that Chinese patent 200310117757 is announced dwindled volume, but vehicle's center of gravity is too high, and the boost installation complex structure also fails to be reduced to minimum with depositing volume, does not see and popularizes utilization.

Technology contents

In order to overcome the deficiencies in the prior art, the inventor designs a kind of novel antifouling portable folding bicycle through research repeatedly.This car reduces wheel diameter by adding multiplying wheel, set up to tow and tow after auxiliary wheel conveniently folds and will not mention by car load, folding stand, overlap and chain drum is installed and multiplying wheel, multiplying wheel and trailing wheel dwindle the car stowage volume, keep depositing or carrying clean environment by setting up dirt proof sleeve.

Technical scheme of the present invention is as follows:

Standpipe and front fork before portable anti-soil foldable bicycle comprises, rear profile tube and back vent, handlebar, transverse tube, front and back wheel, flywheel, wheel shaft, chain drum, multiplying wheel, chain, step, transmission arm, saddle, tow parts such as auxiliary wheel and dirt proof sleeve, rear profile tube is perpendicular to ground, the lower end is connected with trailing wheel and flywheel wheel shaft by back vent, the rear profile tube middle part, multiplying wheel is installed, the multiplying wheel wheel shaft is fixed on the rear profile tube, between multiplying wheel and flywheel, chain drum is installed, the chain drum wheel shaft is positioned at the place ahead of rear profile tube, the chain drum diameter is less than the back wheel diameter, the multiplying wheel diameter is identical with the back wheel diameter, saddle is installed on the top of rear profile tube, but smaller part portion horizontal direction is folding before the saddle, rear profile tube is made up of two parts up and down, the first half can be inserted in the lower part, preceding standpipe lower end is installed on the front-wheel wheel shaft by front fork, handgrip is installed on the top, preceding standpipe middle part is connected with the transverse tube front end by sleeve pipe, the transverse tube rear end is connected with rear profile tube, point of connection is above multiplying wheel, before standpipe form by two parts up and down, its first half can be inserted in the lower part, the handgrip middle part respectively is provided with a folding device with preceding standpipe point of connection both sides, after folding, the both sides of standpipe before handgrip is positioned over, be provided with folding device at the transverse tube front end, after folding, preceding standpipe lower part is close to the right side that is positioned over transverse tube, be provided with folding device in the transverse tube rear end, after folding, transverse tube is close to and is positioned over the rear profile tube lower part, on rear axle, installation can be around the support of wheel shaft rotation, and the support other end is installed and towed auxiliary wheel, and support is positioned over wheel shaft the place ahead level attitude, when towing vehicle, support rotates and opens, and tows auxiliary wheel and lands, between chain drum and the multiplying wheel, between multiplying wheel and the flywheel with chain gear, multiplying wheel, chain drum, chain, flywheel, the first half of trailing wheel wraps up with a dirt proof sleeve, and front-wheel is with another dirt proof sleeve parcel.

The folding process of vehicle:

Unclamp latching device, standpipe lower part before the preceding standpipe first half is inserted in is with the folding downwards respectively both sides that are positioned over preceding standpipe lower part of two side handles.With transverse tube front end folding point is that the axle center to right folding, makes it be close to the right side of transverse tube preceding standpipe lower part (comprising the front-wheel and the preceding standpipe first half that is inserted in).To ride and be folded to transmission arm.

So far, steamboat directly cleans Portable folding hand cart and has been folded into the T font.

With transverse tube rear end folding point is the axle center, and upset folding transverse tube in below makes transverse tube be close to (comprising preceding standpipe) left side of rear profile tube lower part to the left.The rear profile tube first half is inserted in lower part.The saddle forebody is folding downwards.

After folding the finishing, steamboat directly cleans the portable folding bicycle and is folded in the rear profile tube half area, and the top is a saddle.Tow as need, the standpipe first half before then pulling out is used as pull bar and is used.

Principle of the present invention is:

Recently reduce wheel diameter by adding multiplying wheel increase transmission, by the design of overlapping between chain drum and the multiplying wheel, between multiplying wheel and the trailing wheel, line between chain drum and multiplying wheel and flywheel and rear profile tube overlapping design reducing vehicle volume, by folding transverse tube, handgrip and foot-operated, standpipe and rear profile tube dwindle and deposit volume before shrinking, keep the outside vehicle cleaning by adding dirt proof sleeve, tow after auxiliary wheel conveniently folds by setting up to tow.

Compared with prior art, the substantive distinguishing features given prominence to of the present invention and progress are:

1, between trailing wheel and the chain drum, adopt the formula design of overlapping between chain drum and the multiplying wheel, dwindles the volume of actuating device;

2, chain drum is installed on (but not on multiplying wheel) between multiplying wheel and the flywheel, increases stability thereby lower the center of gravity;

3, line between chain drum and the flywheel and rear profile tube major part are overlapping, dwindle the vehicle volume;

4, supporting point concentrates on trailing wheel, and preceding standpipe and transverse tube bear than light load, therefore can do gentlyer, and volume is littler;

5, set up and tow auxiliary wheel, convenient towing after folding, even with the common iron manufacturing, weight is heavy slightly, also can allow the more weak women and children of muscle power conveniently tow, and will not mention by car load;

6, available common iron, gauge member manufacturing, simple in structure, technology is simple, and cost is low, easier popularizing;

7, in sprocket wheel, chain, multiplying wheel, flywheel and front and back wheel outside dirt proof sleeve is installed, folded bicycle more cleans;

8, in sum, the cleaning Portable folding hand cart after folding can easily be brought bus or subway train into.As the folded bicycle of 15 centimetres of wheel diameters, can be folded into to being about 50cm, wide 15cm, the volume of dark 20-30cm.

Description of drawings

Fig. 1 is improved portable anti-soil foldable bicycle integral structure figure;

Fig. 2 is the handgrip after folding, the preceding standpipe after the contraction and the constructional drawing of front-wheel;

Fig. 3 is the constructional drawing after a preceding standpipe of portable anti-soil foldable bicycle and a rear profile tube first half part are inserted in the latter half;

Fig. 4 is after portable anti-soil foldable bicycle transverse tube front end folds, the structure of preceding standpipe and the overlapping placement of transverse tube;

Fig. 5 is after portable anti-soil foldable bicycle transverse tube rear end folds, the structure of transverse tube and the overlapping placement of rear profile tube.

Claims (9)

1. portable anti-soil foldable bicycle, comprise front-wheel, front fork and preceding standpipe, handgrip, saddle, rear profile tube and back vent, trailing wheel, wheel shaft, chain drum, multiplying wheel, chain, foot-operated, transmission arm, transverse tube, latching device, folding device, tow auxiliary wheel and dirt proof sleeve, it is characterized in that: preceding standpipe, transverse tube and rear profile tube are the H type and install, preceding standpipe, rear profile tube is socketed to form by upper tube half and lower tube half respectively, a upper tube half part can be inserted in the lower tube half, latching device is established on the lower tube half top, multiplying wheel, chain drum is installed on rear profile tube lower part right side, handgrip is installed on preceding riser top ends, each side establish a folding device at handgrip and preceding standpipe point of connection, can distinguishing forward, standpipe folds, the saddle forebody is established folding device, fold-down is folded, transverse tube is connect by two pipe boxes and forms, a preceding semicanal part can be inserted in the back semicanal, back semicanal front end is established latching device, a folding device is respectively established in the transverse tube front-end and back-end, front end is folding to make preceding standpipe lower part be close to the transverse tube right side together with the upper tube half of being inserted in, the folding transverse tube that makes in rear end is close to rear profile tube lower part left side together with the preceding standpipe after folding, one dirt proof sleeve parcel multiplying wheel, chain drum, flywheel and trailing wheel, another dirt proof sleeve parcel front-wheel, tow auxiliary wheel and be installed on rear axle by support, be positioned over wheel shaft the place ahead level attitude, when towing, the lower end is opened rotation and is landed.

2. according to right 1 described portable anti-soil foldable bicycle, it is characterized in that: actuating device is made up of chain drum, multiplying wheel and flywheel, between chain drum and the multiplying wheel, be connected with chain between multiplying wheel and the flywheel.

3. according to right 1 described anti-soil foldable bicycle, it is characterized in that: partly overlapping installation between chain drum and the multiplying wheel, between multiplying wheel and the trailing wheel.

4. according to right 1 described portable anti-soil foldable bicycle, it is characterized in that: multiplying wheel and trailing wheel equal diameters, the chain drum diameter is less than the back wheel diameter, and the plumb cut in trailing wheel, chain drum and multiplying wheel the place ahead is same plane, and the chain drum axle center is positioned at the place ahead of rear profile tube.

5. according to right 1 described portable anti-soil foldable bicycle, it is characterized in that: chain drum is installed on the multiplying wheel below.

6. according to right 1 described portable anti-soil foldable bicycle, it is characterized in that: rear profile tube is installed on rear axle by back vent.

7. according to right 1 described portable anti-soil foldable bicycle, it is characterized in that: towing auxiliary wheel is simple and easy steamboat.

8. according to right 1 described portable anti-soil foldable bicycle, it is characterized in that: wheel diameter is not more than 30 centimetres.

9. according to right 1 described portable anti-soil foldable bicycle, it is characterized in that: vehicle can be used the common iron manufacturing, and vehicle available standards part or simple knot member are made.

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