CN2296304Y - Folding bicycle - Google Patents

Abstract

The utility model relates to a folding bicycle, which comprises a front wheel, a rear wheel, a bicycle frame, a saddle, a bicycle head and a pedaling device. The bicycle frame is provided with a folding mechanism of the bicycle frame, which comprises a middle vertical tube, a middle vertical casing tube, a tube bundle and a fast detachable unit; the bicycle head is provided with a rotating mechanism of a handle bar, which comprises a hanging neck of the handle bar, a front tube, a vertical tube of a front fork, a tube bundle and a fast detachable unit; the pedaling device is provided with a folding mechanism of a pedal, which comprises an upper crank, a lower crank, a fixed sleeve barrel and a spring. The utility model has the advantages of simple structure, convenient operation, light weight and firm structure.

Description

Folding bicycle

The utility model belongs to the bicycle field, and what be specifically related to is a kind of folding bicycle.

The technology of existing relevant folding bicycle is a lot, but most foldable structure is too complicated, not only increases car weight, and uses inconvenience, and is impracticable; What have then is unreasonable structure on the angle of mechanics, a kind of folding bicycle is disclosed as Chinese utility model patent 95216249, its vehicle frame is to be the front and back two-section in front-axle beam punishment, finish the folding of vehicle frame by the connection of folding rotation box between two-section, this folding mode makes the stressed bigger, both insecure also not attractive in appearance of folding rotation box.

The purpose of this utility model is the deficiency at the above prior art, and a kind of simple in structure, convenient and practical folding bicycle is provided.

The purpose of this utility model is achieved in that the utility model comprises front and back wheel, vehicle frame, saddle, headstock and foot pedal apparatus, the utility model is provided with a vehicle frame folding mechanism at vehicle frame, vehicle frame folding mechanism comprises neutral tube, neutral sleeve pipe, tube bank and Fast detachable unit, neutral tube and central siphon, back chain stay and rear stays fixedly fuse, neutral casing pipe sleeve is in the bottom of neutral tube, neutral sleeve pipe and front truck beam fixedly fuse, and the upper end mouth of pipe of neutral sleeve pipe is fastening with tube bank and Fast detachable unit; The utility model is provided with a handlebar rotating mechanism at headstock, what the handlebar rotating mechanism comprised handlebar hangs neck neck, preceding pipe, vertical tube of front fork, tube bank and Fast detachable unit, before pipe and vertical tube of front fork axle sleeve mutually, the lower end of vertical tube of front fork connects front fork, the upper end extend out to outside the preceding pipe, the upper end of hanging the neck neck connects handlebar, and the lower end is stretched into wherein from the upper end mouth of pipe of vertical tube of front fork, and the upper end mouth of pipe of vertical tube of front fork is fastening with tube bank and Fast detachable unit; The utility model is provided with a foot-operated fold mechanism at foot pedal apparatus, comprise crank, lower crank, fixed muffle and spring, last crank and lower crank are formed crank, the upper end of last crank connects axis, the lower end connecting pin pedal of lower crank, be connected with hinge between last crank and lower crank and be with fixed muffle in the junction, fixed muffle pushes up mutually with the spring that is enclosed within on the crank of its top.

Two fold mechanisms of the present utility model and handlebar rotating mechanism all are simply to transform to get final product on the original structure of bicycle in addition, have advantage simple in structure, easy to use, in light weight and that structure is firm.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the integral structure scheme drawing of the utility model embodiment.

Fig. 2 is the constructional drawing of the vehicle frame folding mechanism of the utility model embodiment.

Fig. 3 is the constructional drawing of the handlebar rotating mechanism of the utility model embodiment.

Fig. 4 is the constructional drawing of the foot-operated fold mechanism of the utility model embodiment.

Fig. 5 is the first folded state scheme drawing of the utility model embodiment.

Fig. 6 is the final folded state scheme drawing of the utility model embodiment.

As Fig. 1 Fig. 2 Fig. 3 and shown in Figure 4, the utility model embodiment comprises front and back wheel, vehicle frame, saddle, headstock and foot pedal apparatus, most of structure of the present utility model is identical with ordinary bicycle, only vehicle frame, headstock and foot pedal apparatus are transformed, be respectively equipped with vehicle frame folding mechanism, handlebar rotating mechanism and foot-operated fold mechanism and finish folding purpose.Vehicle frame folding mechanism comprises neutral tube 1, neutral sleeve pipe 2, tube bank 3 and Fast detachable unit 4, neutral tube 1 and central siphon 8, back chain stay 5 and rear stays 6 fixedly fuse and constitute a scalene triangle, neutral sleeve pipe 2 then is enclosed within the bottom of neutral tube 1, neutral sleeve pipe 2 fixedly fuses with front truck beam 7, the upper end mouth of pipe of neutral sleeve pipe 2 is equipped with tube bank 3 and Fast detachable unit 4, make it to be fixed together with tube bank 3 and Fast detachable unit 4 fastening its mouths of pipe with neutral tube 1, when needs are folding Fast detachable unit 4 being loosened, is that the axle center is rotated neutral sleeve pipe 2 and can be folded vehicle frame with neutral tube 1; What the handlebar rotating mechanism comprised handlebar hangs neck neck 9, preceding pipe 10, vertical tube of front fork 11, tube bank 3 and Fast detachable unit 4, before pipe 10 and vertical tube of front fork 11 axle sleeve mutually, the lower end of vertical tube of front fork 11 connects front fork 12, the upper end stretches out one outside preceding pipe 10, the upper end of hanging neck neck 9 connects handlebar, the lower end is stretched into wherein from the upper end mouth of pipe of vertical tube of front fork 11, the upper end mouth of pipe of vertical tube of front fork 11 is equipped with tube bank 3 and Fast detachable unit 4, fastening Fast detachable unit 4 can be hanging neck neck 9 and vertical tube of front fork 11 tightens together, and when loosening Fast detachable unit 4, but hang the handlebar up-down adjustment or the left-right rotation of neck neck 9 and one thereof; Foot-operated fold mechanism comprises crank 13, lower crank 14, fixed muffle 15 and spring 16, last crank 13 and lower crank 14 are formed crank, the upper end of last crank 13 connects axis, the lower end connecting pin pedal of lower crank 14, there is last crank recessed 17 lower end of last crank 13, there is lower crank protruding 18 upper end of lower crank 4, protruding 18 of last crank recessed 17 and lower crank flexibly connect by pin 19, fixed muffle 15 covers are lived in crank recessed 17 and lower crank protruding 18, the spring 16 that is enclosed within on the crank 13 withstands fixed muffle 15 up, last crank 13 and lower crank 14 are located by fixed muffle 15 and spring 16, when fixed muffle 15 is up carried, expose crank recessed 17 and lower crank protruding 18, this moment, lower crank 14 can and be finished folding around pin 19 rotations, when resetting fixed muffle 15 is up carried again, lower crank 14 is turned back and last crank 13 is in line, allow fixed muffle 15 under the elastic force of spring 16, reset and get final product.

The bicycle normal condition promptly as shown in Figure 1, this moment Fast detachable unit 4 all be in tightening state; When needs are folding, at first 180 ° of front vehicle wheel revolutions, unclamp the Fast detachable unit 4 of the vertical tube of front fork 11 upper end mouths of pipe again, neck neck 9 is hung in rotation makes the parallel fastening then with car body of handlebar Fast detachable unit 4, and this moment, bicycle was in first folded state as shown in Figure 5; For the second time folding is the Fast detachable unit 4 that unclamps the neutral sleeve pipe 2 upper end mouths of pipe, neutral sleeve pipe 2 to vehicle body one side that does not have chain drum rotate 180 ° again fastening Fast detachable unit 4 promptly finish folding of vehicle frame; Folding for the third time the folding of crank that be meant mentioned fixed muffle 15 and lower crank 14 is converted into the last crank 13 vertical fixed muffles 15 that put down is again got final product, and whole bicycle becomes final folded state promptly as shown in Figure 6 at this moment.

Claims (1)

1. folding bicycle, comprise front and back wheel, vehicle frame, saddle, headstock and foot pedal apparatus, it is characterized in that: described vehicle frame is provided with a vehicle frame folding mechanism, comprise neutral tube (1), neutral sleeve pipe (2), tube bank (3) and Fast detachable unit (4), neutral tube (1) fixedly fuses with central siphon (8), back chain stay (5) and rear stays (6), neutral sleeve pipe (2) is enclosed within the bottom of neutral tube (1), neutral sleeve pipe (2) fixedly fuses with front truck beam (7), and the upper end mouth of pipe of neutral sleeve pipe (2) is fastening with tube bank (3) and Fast detachable unit (4); Described headstock is provided with a handlebar rotating mechanism, what comprise handlebar hangs neck neck (9), preceding pipe (10), vertical tube of front fork (11), tube bank (3) and Fast detachable unit (4), before pipe (10) and vertical tube of front fork (11) axle sleeve mutually, the lower end of vertical tube of front fork (11) connects front fork (12), the upper end extend out to outside the preceding pipe (10), the upper end of hanging neck neck (9) connects handlebar, and the lower end is stretched into wherein from the upper end mouth of pipe of vertical tube of front fork (11), and the upper end mouth of pipe of vertical tube of front fork (11) is fastening with tube bank (3) and Fast detachable unit (4); Described foot pedal apparatus is provided with a foot-operated fold mechanism, comprise crank (13), lower crank (14), fixed muffle (15) and spring (16), the upper end of last crank (13) connects axis, the lower end connecting pin pedal of lower crank (14), be connected with hinge between last crank (13) and lower crank (14) and be with fixed muffle (15) in the junction, fixed muffle (15) pushes up mutually with the spring (16) that is enclosed within on the crank (13) of its top.

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