CN2501787Y

CN2501787Y - Fast folding bicycle

Info

Publication number: CN2501787Y
Application number: CN 01252092
Authority: CN
Inventors: 刘奥宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-10-10
Filing date: 2001-10-10
Publication date: 2002-07-24
Anticipated expiration: 2011-10-10

Abstract

Disclosed is a fast folding bicycle which comprises a small front wheel, a big rear wheel, a foldable beam, and a manpower driving mechanism. The utility model is characterized by fast folding, fast unfolding, simple structure and easy carrying.

Description

The fast folding bicycle

The utility model relates to a kind of transport facility, the Collapsible mobile transport facility that particularly a kind of front-wheel is little, trailing wheel is big.

The bicycle of Xiao Shouing mostly is the bicycle of fixed sturcture in the market, because of fixed sturcture bicycle volume big, weight is big, not Easy Move, be placed on indoor stolen easily, and various folding bicycles will carry out two usually, folding more than three times, so complex structure, the productive costs height, the price height, use gathering after the purchase, launch the link multi-user and feel trouble, and to folding bicycle, because the inventor has not only adopted the same macrostructure of front and back wheel when designing, but also has ignored the size of vehicle frame between front and back wheel, has promptly ignored the size of handlebar apart from vehicle frame between the seat bar, the size of this part vehicle frame is too big after the doubling, head and shoulders above the size of chain wheel leading edge of trailing wheel trailing edge, thereby in the trial-manufacture of sample process, can not make car fold into having only of imagination in advance than a minimum size that wheel is more bigger, the doubling bicycle is difficult to carry out.

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of fast folding bicycle that front-wheel is little, trailing wheel is big reasonable in design, simple in structure is provided.

Fast bundle folding bicycle of the present utility model by little front-wheel, big trailing wheel, folding stand, can draw tap in and seat, Power train and brake system etc. constitute.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the deployed configuration scheme drawing with fast folding bicycle of little front-wheel, big trailing wheel of the present utility model.

Fig. 2 is the foldable structure scheme drawing of fast folding bicycle of the present utility model.

Fig. 1 is the little front-wheel that has of the present utility model, the deployed configuration scheme drawing of the fast folding bicycle of big trailing wheel, (1) is front-wheel among the figure, (2) be trailing wheel, (3) leading axle sleeve, (4) leading bar, (5) be handle, the handle left and right sides is pulling and pushing structure for fold-down stack structure or fit, the brake hand can be installed on the handle (5) pulls, bicycle bell, change-speed box speed regulation device etc., (6) be crossbeam before the vehicle frame, (7) be back vehicle frame bottom girder, (8) be chain wheel, (9) be flywheel, (10) be seat bar, (11) be seat, (12,19) be the lifting bar locker, it can be that involute spanner locker or spiral shell are attacked nut spanner locker, (13) be the back skew girder of vehicle frame, (14) be folding lock rotating shaft, (15) be folding lock latch, (16) be stretcher, stretcher is fixed sturcture or folding structure, (21) be foot-driven lever, foot-driven lever is pole spar or hollow stem, (17) be the vehicle frame pillar, (18) be crossbeam behind the vehicle frame between folding lock and pillar (17), preceding crossbeam (6) and back crossbeam (18) can be horizontal structure beam or incline structure beam, for making folding back car load volume minimum, on the left of back crossbeam (18) length is no more than from chain wheel (8) left side top to pillar (17) or to bottom bracket axle (20) left side top, launching running condition, pin hole on folding lock latch (15) the locking crossbeam (6), the centre plane of crossbeam (6) vertical direction and the centre plane of back vehicle frame direction are in the same plane, in the vertical direction, in the past the folding lock place of crossbeam (6) low order end to the length of front-wheel (1) high order end claims front truck should equal equidirectional folding lock place, back crossbeam (18) left side to the length of trailing wheel (2) low order end that goes up apart from L1 and claims back spacing L2, be L1=L2, certainly, L1 also can be slightly larger than or be slightly less than L2, before and after utilizing like this two-wheel diameter difference and trailing wheel (2) high order end to chain wheel (8) high order end apart from this segment length of sum, provide the length space for preceding crossbeam (6) being folded to afterwards in the spacing L2; When folding, on pull out folding lock latch (15), before crossbeam (6) transfer, be stacked to trailing wheel (2) and overlap, open lifting bar locker (12,19), respectively seat bar (10) and faucet lever (4) are contracted to rounding state downwards, make the fast folding bicycle be in folded state, certainly also can faucet lever be designed to folding structure toward the both sides overturning, seat bar is designed to the folding structure of overturning backward by folding lock.

Fig. 2 is the foldable structure scheme drawing of fast folding bicycle of the present utility model, the utility model folding bicycle area after folding gathering the in is only bigger than trailing wheel, if trailing wheel (2) adopts 18 types or 20 types then the folding back of car load area is only suitable with 22 types or 24 type wheel areas, certainly trailing wheel (2) is not got rid of other model wheel of employing yet, vehicle frame pillar of the present utility model (17) is pillar (17) bottom is welded on the bottom bracket axle (20) except that adopting conventional confguration, in order to dwindle the space after seat draws in, also can adopt the back prop structure, be that pillar (17) gets around between the back vehicle frame bottom girder (7) that bottom bracket axle (20) is welded on bottom bracket axle rear side and trailing wheel (2) both sides, or two back vehicle frame bottom girders (7) and bottom bracket axles (20) are welded on the pipe sidewall of pillar (17), pillar (17) bottom not back cover is a hollow structure, and institute's spacing diameter is greater than the diameter of seat bar (10), so that seat bar (10) can pass freely through this space when shrinking.

Power-driven mechanism of the present utility model adopts chain wheel---chain---flywheel group or gear cluster or belt---structures such as belt pulley set or gear cluster, adopt chain wheel---chain---during flywheel, can adopt common chain wheel flywheel group also can adopt speed change chain wheel flywheel group.

Folding bicycle of the present utility model adopts front-wheel big, the structure that trailing wheel is little, solved the difficult problem that vehicle frame can't draw in forr a short time when adopting a folding lock doubling bicycle dexterously, simultaneously because trailing wheel is identical with ordinary bicycle trailing wheel size, therefore the speed of a motor vehicle is also identical with ordinary bicycle, as long as the front-wheel type selecting suitably just can make car be folded to minimum, do not influence safety by bike again, in addition, because the simplification of foldable structure, the user not only draws in and launches soon, and on making, also reduced technology difficulty, and reduced operation, reduced productive costs, saved the manpower in producing, electric power resource, and this structure is reasonable in design, also is feasible in actual manufacturing, and the car that produces is practical.

Most preferred embodiment of the present utility model equals back spacing L2 and front-wheel (1) is 16 types for adopting front truck apart from L1, trailing wheel (2) is 18 types or 20 types wheel footpath, part can adopt aluminum alloy and/or iron and/or engineering plastics and/or carbon fiber and other light-high-strength High molecular material and/or the making of other alloy material on front and back wheel inner ring and vehicle frame and the car, in order to alleviate tare, foot-driven lever can change hollow tubular into by pole spar and make.

Claims

1, a kind of fast folding bicycle, constitute by front-wheel, trailing wheel, tap, vehicle frame, Power train, brake system, it is characterized in that car body is made of crossbeam, bottom girder (7), seat bar (10), seat (11), cant beam (13), the pillar (17) that leading axle sleeve (3), tap, faucet lever (4) and preceding crossbeam (6), back crossbeam (18), folding lock (21) are combined into, the radius of front-wheel (1) is less than the radius of trailing wheel (2).

2, press claims 1 described fast folding bicycle, it is characterized in that front truck equals back spacing L2 apart from L1.

3, press claims 1 described fast folding bicycle, it is characterized in that front truck apart from L1 less than back spacing L2.

4,, it is characterized in that the frame beam that preceding crossbeam (6), back crossbeam (18) constitute is horizontal structure beam and or cant beam by claim 1 or 2 or 3 described fast folding bicycles.

5, by the described fast folding bicycle of claim 1, it is characterized in that tap, seat are liftable structure or folding structure.

6, by the described fast folding bicycle of claim 1, it is characterized in that pillar (17) gets around between the back vehicle frame bottom girder (7) that bottom bracket axle (20) is welded on bottom bracket axle rear side and trailing wheel (2) both sides, or bottom bracket axle (20), vehicle frame bottom girder (7) are welded on the sidewall of pillar (17), pillar (17) bottom is back cover not, and the bottom that the seat bar (10) in the pillar (17) can pass freely through pillar (17) constitutes the back prop structure.

7, press claims 1 or 6 described fast folding bicycles, it is characterized in that pillar (17) is common pillar or back prop structure, the left and right sides handle of faucet lever (5) is that foldable structure or fit pull and push structure, and back crossbeam (18) length is less than or equal to the distance of top to pillar (17), chain wheel left side.

8, press claims 1 or 2 or 3 or 4 or 5 or 6 or 7 described fast folding bicycles, it is characterized in that described foot-driven lever (21) is solid construction or hollow structure.