CN2740519Y

CN2740519Y - Mini-bicycle

Info

Publication number: CN2740519Y
Application number: CN 200420069097
Authority: CN
Inventors: 张光华
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-05
Filing date: 2004-11-05
Publication date: 2005-11-16
Anticipated expiration: 2014-11-05

Abstract

The utility model discloses a mini-bicycle for men, women, old people and young people, which is the improvement on the CN03227862.4 folding bicycle. The differences between the utility model and the CN03227862.4 folding bicycle are that a folding back device is arranged at the joint between a crossbeam casing and a rear steel tube, perforations are arranged at the bottom of the folding device, and a cushion expansion rod can be folded through the rear steel tube. The distance between a rotational pedal shaft and an intermediate gear shaft which is positioned at the lower end of an inverted U-shaped connector is longer than the length of a pedal rod; the pedal rod and a supporter which is connected with the rear wheel are positioned at the same plane; the supporter is arranged at the crossbeam; a front wheel folding back device is arranged on a front steel tube; the pedal rod and pedals can rotate to the inside of the bicycle body; the thickness almost can not be found after being folded. The utility model has the advantages that the simple structure, the mini-bicycle can be folded easily in 10 seconds, after the bicycl is folded, the volume is 0.02-0.025 cubic meters, the weight is only 5-6 kilograms, the length of the bicycle after being folded is only 51 cm, the height is only 30-35 cm, the thickness is only 14 cm, the mini-bicycle which is more convenient to be taken is the minimal bicycle in the present world, and the mini-bicycle can be put in a carrier bag.

Description

The pocket bicycle

Technical field

The utility model relates to a kind of bicycle, especially a kind of folding pocket bicycle.

Background technology

Bicycle is the vehicle that people use always, existing Folding Bicycle, owing to will reach certain speed of a motor vehicle, just two are folded than big wheel and cross member of frame, perhaps also that the front hand grip expansion link is folding, can not be by the people's regulated at will length and the height at different height and age, structure is complicated, volume is bigger; My Chinese patent CN03227862.4 Folding Bicycle, but the simple regulated at will length of its structure, just; The speed of a motor vehicle is fast, volume is less but also not ideal, and its volume is still bigger.

The utility model content

The purpose of this utility model is that the Folding Bicycle to CN03227862.4 is further improved, and provides that a kind of structure is simple more, volume after folding is littler, it is convenient to carry, vehicle body is more stable, more firm pocket bicycle.

The part that the pocket bicycle is identical with CN03227862.4 comprises front vehicle wheel, rear wheel, the fixing preceding steel pipe of front vehicle wheel, the expansion link that links to each other with preceding steel pipe, free handle bar and dipping control, rotate pedal rod and axle thereof, pedal, height adjustable type seat cushion expansion link, seat cushion, the scalable crossbeam of plug-in type and the anchor fitting of steel pipe and back steel pipe before connecting, brake gear, the after cross member end is provided with an inverted U attaching parts, U type attaching parts lower end is provided with connection shaft, transmission device is realized by four sprocket wheels and two chains, it is characterized in that crossbeam overcoat and steel pipe junction, back are provided with the device that folds back, the folding device bottom is provided with perforation, turn down poststack behind the back steel pipe, the seat cushion expansion link can pass the back steel pipe and realize folding; The counter gear shaft of inverted U attaching parts lower end with rotate the pedal wheelbase from greater than pedal stroke length, pedal stroke be located at support that crossbeam is connected trailing wheel at grade, be equipped with folding device behind the front-wheel on the preceding steel pipe.

Pedal stroke is made up of cover and overcoat in rotatable, makes pedal stroke and pedal to the rotation of vehicle body the inside;

Be provided with folding device between seat cushion and the seat cushion expansion link;

The anchor fitting of described fixedly front and back crossbeam is for to have Baltimore groove in after cross member overcoat upper front end, Baltimore groove

Be provided with fixedly gong silk of two off-centre.

This pocket bicycle, as long as simple in structure, folding convenient is realized folding about 10 seconds; Folding volume has only the 0.02-0.025 cubic meter, and weight has only the vehicle commander after 5-6 kilogram, this car draw in to have only 51 centimeters, and height has only the 30-35 centimetre, and thickness has only 14 centimeters; It is minimum at present bicycle; It is square-folded to draw the back in, can very like a cork it be mentioned upstairs or on the bus or on other vehicle, can also deposit at the cloakroom in general supermarket, as long as can put into a little handbag, carry convenient, very convenient to the tourist; But its regulated at will length and height go for the people of different heights, both can be adapted to man, woman, old, children uses, and the speed of a motor vehicle is also faster than the speed of a motor vehicle of existing big bicycle.

Description of drawings

Fig. 1 is the overall structure scheme drawing;

Fig. 2 is an after cross member part-structure scheme drawing;

Fig. 3 is the chain sprocket structure scheme drawing.

The specific embodiment

Embodiment:

Present embodiment comprise front vehicle wheel 1, rear wheel 2, fixedly front vehicle wheel preceding steel pipe 4, the expansion link 5 that links to each other with preceding steel pipe, can carry out the free handle bar 6 that height is regulated, before steel pipe be provided with folding device 24 behind the front-wheel, because slightly 13 centimetres of this folding device height, the distance that makes end support and following end support on the car front-wheel is than having dwindled, move on the force, vehicle body is more steady; Front cross rail 17 can insert in the after cross member cover 18 and by anchor fitting and fix, and the anchor fitting of present embodiment is to have Baltimore groove 30 in after cross member overcoat upper front end, and groove is provided with fixedly gong silk 31 of two off-centre.After cross member 18 is provided with the device 25 that folds back with steel pipe 14 junctions, back, and the folding device bottom is provided with perforation 26, and back turnover poststack seat cushion expansion link 12 passes the back steel pipe and realizes folding; Have between seat cushion expansion link 12, seat cushion 13, seat cushion and the seat cushion expansion link of dipping control and be provided with folding device 29; Rotating pedal rod 9 is made up of interior cover 27 and overcoat 28, pedal 15, brake gear 16, be installed in counter gear shaft 19 and the distance of rotating pedal axle 10 on the inverted U attaching parts greater than pedal stroke length, pedal stroke and be located between crossbeam overcoat and the rear vehicle shaft support 32 at grade, pedal stroke and the pedal side of occupation of land not when folding, thus significantly reduced the thickness of folding back vehicle body; Make car also more stable.

Transmission device is realized by four sprocket wheels and two chains, minor sprocket 20 in four sprocket wheels and hinge wheel 21 are installed in two ends of inverted U attaching parts counter gear shaft, a hinge wheel 22 in addition is installed in a side of rotating the pedal axle, also have a minor sprocket 24 to be installed in a side of rear vehicle shaft 3, article two, chain 23 is connected the minor sprocket of homonymy respectively with hinge wheel, different sizes by these two pairs of sprocket wheels are realized the high speed ratio, make trundle reach the purpose of the high speed of a motor vehicle.

Claims

1, a kind of pocket bicycle, comprise front vehicle wheel, rear wheel, the fixing preceding steel pipe of front vehicle wheel, the expansion link that links to each other with preceding steel pipe, free handle bar and dipping control, rotate pedal rod and axle thereof, pedal, height adjustable type seat cushion expansion link, seat cushion, the scalable crossbeam of plug-in type and the anchor fitting of steel pipe and back steel pipe before connecting, brake gear, the after cross member end is provided with an inverted U attaching parts that connection shaft is housed, transmission device is realized by four sprocket wheels and two chains, it is characterized in that crossbeam overcoat and steel pipe junction, back are provided with the device that folds back, the folding device bottom is provided with perforation, turn down poststack behind the back steel pipe, the seat cushion expansion link can pass the back steel pipe and realize folding; The counter gear shaft of inverted U attaching parts lower end with rotate the pedal wheelbase from greater than pedal stroke length, pedal stroke be located at support that crossbeam is connected trailing wheel at grade, be equipped with folding device behind the front-wheel on the preceding steel pipe.

2, pocket bicycle according to claim 1 is characterized in that pedal stroke is made up of cover and overcoat in rotatable.

3, pocket bicycle according to claim 1 is characterized in that being provided with folding device between seat cushion and the seat cushion expansion link.

4, pocket bicycle according to claim 1, the anchor fitting that it is characterized in that described fixedly front and back crossbeam are by the fixing fixing Baltimore groove opened of after cross member overcoat upper front end of gong silk of two off-centre.