CN2059144U

CN2059144U - Box type foldable bicycle

Info

Publication number: CN2059144U
Application number: CN 89202202
Authority: CN
Inventors: 刘满启
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-04
Filing date: 1989-03-04
Publication date: 1990-07-11

Abstract

The utility model relates to a box type foldable bicycle, which adopts that fore and after wheels are folded together, left and right pedals are reversely buckled between wheel spokes, two upright handle-bars are folded sideways, and the fore and after wheels, the left and right pedals and the two upright handle-bars are integrated in a main vehicle frame, and the speed-up mechanism of front axle drive and gear turnover wheel train is adopted. The utility model has artful design, compact structure, convenient carrying and simple and easy folding, and the utility model is a novel portable walk-substituting tool.

Description

Box type foldable bicycle

The utility model relate to a kind of can folding of bicycle, or rather, relate to a kind of can all folding handlebar, front fork, back vent and pedal and draw the bicycle that becomes suitcase type in.

Bicycle is the main vehicle that the present both urban and rural residents generally uses, and brings many facilities and enjoyment to people's life, and still, along with the progress of society, people have proposed new requirement and expectation to bicycle.One of them is that its volume of attempt change is big, and the defective of inconvenience is carried in carrying.Especially the user of inhabitation building in the city, carrying every day is picked up the car and is gone up downstairs, feels heavy inconvenience deeply, takes up an area of excessively when parking car again, more can not carry vehicle and go to the other places to ride instead of walk to go sightseeing.For this reason, people work out many Folding Bicycles.According to the knowledge of the applicant, these folded bicycles still have all limitations.But as the steamboat folding bicycle that the vehicle frame side of Sichuan in 1981 Chaoyang machine works trial-production is rolled over, parts such as its handlebar, pedal are not collapsible, so structure is not compact, and still sense is guided and supported not convenient.

The purpose of this utility model provides a kind of compact conformation, guides and supports box body type folding worker bicycle easily.

The box folding scheme that the utility model is the folding gathering of employing front and back wheel, left and right sides pedal oppositely is fastened between the wheel width of cloth bar and the three of vertical handlebar side-foldable preserves altogether in the main car frame framework realizes.And, cancelled axis, adopt the front axle driving and in front axle, set up the speed increasing mechanism of gear epicyclic train, both simplified driving device, guaranteed driving efficiency again.

Characteristics of the present utility model are that the floor area of bicycle parking, storage is greatly reduced, even less than 1/2 of ordinary bicycle, and, after folding, can be by the portable stair activity of rider, also can take take elevator or by train, the sightseeing of riding instead of walk when steamer, automobile out on tours.This car design concept is ingenious, and compact conformation is folding, launch simple and conveniently, is a kind of novel and portable vehicle.

Fig. 1 is the lateral plan that the utility model expands into riding condition.

Fig. 2 be the utility model be folded into guide and support, the lateral plan of accumulating state.

Fig. 3 is the transmission scheme drawing and the constructional drawing of the speedup epicyclic train of front axle.

Below in conjunction with accompanying drawing, the concrete elaboration introduced it.

Fig. 1 and Fig. 2 are respectively that expansion of the present utility model is ridden and folded and guides and supports or the lateral plan of accumulating state.Also represented the leading dimensions size under its two states among the figure.Vehicle seat 2 and vertical handlebar 1 are housed above main car frame 3.The root of two vertical handlebars is enclosed within the garden pipe on main car frame vertical shaft top, there is cone-shaped butterfly-shaped nut to come fastening location in the middle of the pipe of garden, when fly nut unclamped, two just mutual side-foldables of vertical handlebar were swung to the both sides of the vertical shaft of main car frame.Vehicle seat 2 is positioned at the top of main car frame 3, is foamed plastic or cavernous structure, is equipped with therebetween and guides and supports handgrip 12.Front forked frame 5 and rear crotch 4 are contained in the rear and front end of main car frame 3 respectively by the jointed shaft of fly nut locking.Unclamp fly nut, front forked frame 5 and rear crotch 4 can be held together to the crossbeam frame invagination overlapping of vehicle frame 3 with staggering mutually.The crank 10 of left and right pedal is sub-packed in the front axle two ends of front-wheel 6, and the speed increasing mechanism 8 that transfers from one department to another in gear week is housed on front axle.The crank root of left and right pedal is the square piece of carving, embed in the groove at front axle two ends, and be jointed shaft with the pin in the groove, crank can around 180 ° of rotations and pedal is embedded between the width of cloth bar of front-wheel.When folding, should first folding crank, left and right sides pedal is drawn in respectively after between the preceding spoke bar, loosening again fly nut is folding in carriage frame with front forked frame 5 and trailing wheel 7.The wheel disc lock 9 of the drag of steel rope manipulation is housed on the rear axle of trailing wheel 7.Also be equipped with when riding at the rear portion of rear crotch 4 is that car cover and clothes stand fold that to draw in be support body 11 for the box-type bracing frame.Height and length when car load launches are 1100 * 1860mm.(wheel diameter is 500mm) when handlebar, front fork, back vent and pedal folding respectively draw in into Fig. 2 state " casing ", its volume size is that length is 750 * 20 * 650mm.At this moment, can guide and support handgrip 12 carries car load easily or shelves on the spot.According to the materials used of making car body, complete vehicle weight is about about 10 kilograms.

The pedal crank is 10 among Fig. 2, and the satellite gear 14 in speedup epicyclic train all is fastened on rotation on the front axle 13.Gear ring 15 is to connect with front forked frame 5.16 of sun wheels are by being connected one with being fastenedly connected of shell 21 with width of cloth bar 17 with front tyre 18, shaft drying gear epicyclic train speed increasing mechanism before forming.Pedal when riding 10 rotations of pedal crank, drive and the fastening pinion carrier that fuses 19 rotations of front axle by front axle 13, make the planet axis 20 on the pinion carrier 19 be with 14 rotations of two satellite gears, the gear teeth of satellite gear 14 outside is along being fixed on gear ring 15 on the front forked frame 5 with nut 22 when rotating, its gear teeth inboard drives sun wheel 16 rotations again, the shell 21 of taking turns train because of sun wheel 16 and week is fastenedly connected, and shell 21 is connected with front-wheel 6 by width of cloth bar, thereby makes front-wheel 6 twirl by sun wheel 16.The modulus of each gear of this mechanism is M=1.5, and its number of teeth is respectively satellite gear Z=15, gear ring Z=60, sun wheel Z=30.According to planetary transmission than computing formula: i=(Z gear ring/Z sun wheel)+1, over-speed gear ratio that can this mechanism is:

i＝（60／30）＋1＝3

To ride velocity of rotation be 3600 times/hour as per hour pedaling, and when the wheel tyre diameter was 0.5 meter, the speed of a motor vehicle that can reach was:

V=π * D * n * i=3.14 * 0.5 * 3600 * 3=16.96 kilometer/hour.

Claims

A kind of box-type folding bicycle of being made up of main car frame, Foldable handlebar, front fork, back vent, front axle, rear axle and forward and backward wheel component that comprises is characterized in that:

1, front fork, back vent adopt the jointed shaft of fly nut locking to be installed in the rear and front end of main car frame respectively,

2, the crank of left and right pedal is sub-packed in the front axle two ends of front-wheel, and the speed increasing mechanism that transfers from one department to another in gear week is housed on front axle,

3, the root of two vertical handlebars is enclosed within the garden pipe on main car frame vertical shaft top, and the fly nut of a fastening location that can fold vertical handlebar mutually when it unclamps is arranged in the middle of the garden pipe,

4, the crank root of left and right pedal is for embedding the square piece of carving in the groove of front axle two ends, have in the groove one as crank can around 180 ° of rotations and the pin of the hinged S. A. between the spoke bar before pedal is embedded.