CN2224785Y

CN2224785Y - Multifunctional folding bicycle

Info

Publication number: CN2224785Y
Application number: CN 95206241
Authority: CN
Inventors: 李吉明
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-25
Filing date: 1995-03-25
Publication date: 1996-04-17
Anticipated expiration: 2005-03-25

Abstract

The utility model relates to a multifunctional folding bicycle. A double-hinge axle folding mechanism (3) which can be opened and rotated is arranged at the connection part of a front beams and a back beam (12) and (8); a front and a back wheels take two pin shafts (4) and (7) as a rotary point and then is rotated to 90 DEG from the center point of the folding mechanism in folding so that two wheels are folded in a same axial line and are parallel; a handle bar is composed of an inner sleeve handle (19) and an outer sleeve handle (20). When the bicycle is folded, the outer sleeve handle is pulled out and is turned downward to 90 DEG; the handle bar is collected at two sides of a handle pillar. The lower end of a fixed small wheel frame (5) under a center shaft (22) is provided with a universal wheel; the universal wheel which is put down and two parallel wheels form a trolley with three wheels. The utility model has the advantages of convenient folding, quick bicycle conversion, simple structure and long service life.

Description

A kind of multifunction folding bicycle

The utility model relates to a kind of multifunction folding bicycle.

China is bikedom, because bicycle body's heaviness, the scheme of folding bicycle is varied, and various schemes have all successfully realized the folding of car body.For example: " microlight-type Folding Bicycle " but (CN2101630) be a kind of not only fast folding but also the Folding Bicycle of quick-recovery soon, the front and back girder of this car is made by the rectangle hollow aluminium alloy extrusions." multifunctional folding bicycle " is a kind of folding convenient (CN2129732Y), can be used as the multifunctional folding bicycle of waggon after folding.Vehicle frame is trapezoidal, and last underbeam, handlebar are all collapsible.Above-mentioned two kinds of methods have all changed the technological process of production of ordinary bicycle largely, are not easy to go into operation, and complex structure.To so far, the folding bicycle burst is that the center folds with single jointed shaft only, so the two-wheel axle is not at an axis before and after the folding back, and wheel can not be parallel arranged side by side, so can not carry out easily after folding.

The purpose of this utility model is not change under the prerequisite of bicycle technological process substantially, designs a kind of folding convenient, recovers rapidly, and the two-wheel axle is at the parallel folding bicycle arranged side by side of same axis two-wheeled before and after the folding back.

Scheme of the present utility model is as follows: the foldable structure that is positioned in the middle of the front-axle beam back rest of vehicle frame is rotatable two hinge structures of splitting, and is installed near the axis, and the axis that makes two front and back wheel behind the vehicle frame rotary folding is on same axis.Front-axle beam adopts common double oblique beams structure, but installs anyhow auxiliary girder additional strengthening bending resistance, antitorque, the impact resistance of vehicle frame, and adopts tubular structure.Handlebar is folding wheel, tightens up the post both sides after folding, and mainly adopts overcoat handle and interior cover socket, by bolted connection and fastening.One movable little wheel carrier is set on axis simultaneously, and cardan wheel is installed in the bottom, falls little wheel carrier behind vehicle frame folding, and the cardan wheel wheel parallel with two formed a nimble buggy.

The utility model is simple in structure, does not change the ordinary bicycle technological process substantially.The two-wheel axle is on same axis before and after the folding back, and two wheels are parallel.Locking mechanism is also simple and convenient, and hinge-point is not the train spacing point of front and back car beam.Hinge-point is two.Decapacitation make easily the folding back of two wheels parallel outside, also having avoided stress point is that a place reduces the life-span of car.Folding convenient, the function of recovering to ride can be made buggy soon, again and use.

Below in conjunction with accompanying drawing the utility model is illustrated:

Fig. 1-Figure 11 is the utility model constructional drawing.Wherein Fig. 1 is an overall pattern.Fig. 2-Fig. 5 is the constructional drawing of the fold mechanism of vehicle frame.Fig. 2 is a scantling plan, and Fig. 3 is main part frame plate figure, and Fig. 4 is the front elevation that locks mechanism, and Fig. 5 is the birds-eye view of Fig. 4.Fig. 6-Fig. 9 is the constructional drawing of Foldable handlebar, two block diagram the when constructional drawing when Fig. 6 launches for handlebar, Fig. 7, Fig. 8 are represented respectively to fold, the section-drawing that Fig. 9 overlooks for handlebar.Figure 10, Figure 11 are the constructional drawing of little wheel carrier.

As shown in the figure, handle-bar stem (1) is positioned on the front fork, and handlebar (2) is collapsible, and the fold mechanism of vehicle frame (3) is positioned at the intersection of the front-axle beam (12,8) and the back rest (11).Form by front baffle (16), rear frame (14), frame plate (13), preceding bearing pin (7), rear pin shaft (4), Jiong shape locking pin (6), lock pin frame (18).Wherein front baffle (16) and front-axle beam (12,8) are fixing, the rear frame (14) and the back rest (11) and axis (22) are fixing, when need are folding, only need pull up Jiong shape locking pin (6), make the upset of front vehicle frame, after-frame, to begin with rear pin shaft (4) from the forward and backward framework (16) (14) of foldable structure from train spacing point be pivot point half-twist to the left to vehicle frame before and after this moment, and former again bearing pin (7) is 90 ° of pivot point right-hand revolutions, two wheel doublings before and after making, and the axle of front and back wheel is on an axis.The width between centers of the promptly preceding bearing pin (7) of the distance of forward and backward wheel, rear pin shaft (4), two wheels are parallel.The front truck beam adopts double bent tube by preceding girder (12), and preceding auxiliary girder (8) is formed, and in addition horizontal auxiliary girder (27), perpendicular auxiliary girder (17), to increase shock resistance, bending resistance, anti-twisting property.In the time of need recovering by bike function, two wheels are launched into 180 °, pivot point remains bearing pin (7), (4).After the expansion Jiong shape locking pin (6) is inserted on the lock pin frame (18), lock pin frame (18) is that two opposite L shaped members are formed, and is separately fixed at the train spacing point both sides of front baffle (16) and rear frame (14).After Jiong shape locking pin is plugged front and back car beam closely is fixed together.

Handlebar (2) is made up of (19), overcoat to (20) cover in tubular.Interior cover is fixed the back insertion to (19) and exceedingly high bar (31) in the post (1).Overcoat is on (20) groove (28) being arranged.Tie bolt (21) is connected outer grip (20) with interior grip (19), bolt (21) and interior grip (19) flexibly connect.When need are folding, as shown in Figure 7 nut unclamped outer grip (20) and be pulled to the top, the 90 ° of both sides that left and right sides handlebar can be folded in a post (1) of overturning then along groove (28).When recovering by bike function, cover getting final product so that the nut on the bolt (21) is fixing outside (19) in overcoat was enclosed within (20).

Little wheel carrier (5) is made up of adapter plate (9), clamp (23), connecting screw rod (24), stage clip (25), cardan wheel (26).Adapter plate (9) is captiveed joint with axis (22), is fixed with a set pin (29) on the adapter plate.Little wheel frame axle (5) is the cylinder of step, and the upper end is connected with adapter plate (9) by set pin (29).Little wheel carrier (5) can be a central movable along set pin (29).Be enclosed within the upper end of little wheel carrier (5) after two connecting screw rods (24) connect two clamps (23), clamp is the shoulder of little wheel carrier down for stage clip (25), stage clip down.Two clamps (23) after connecting pin (21) connects, upper and lower the moving of axle that can little wheel carrier (5).After folding car body is finished, clamp (23) is passed downwards, the axle of two clamps and folded little wheel carrier is fastened in the Jiong shape groove of adapter plate, make little wheel carrier fixing downward vertically, the little cardan wheel (26) of bottom and two wheels formation three-wheel vehicle.When recovering by bike function, promote clamp (23) downwards it is freed in the Jiong shape groove of adapter plate (9), the axle upset of little wheel frame axle (5) along set pin (29) snapped on the horizontal fork beam in back (10).

As shown in Figure 5, front baffle (16), rear frame (14) are fixed a thin steel shoe (32) afterwards respectively, and this baffle plate (32) is connected with the front and back frame fixation, and the no annexation of frame plate (13).Recovering to lock bicycle after the function by bike together with Jiong shape locking pin (6).

Claims

1, a kind of multifunction folding bicycle, front-axle beam is by preceding girder (12), preceding auxiliary girder (8) is formed, front-axle beam (12) (8), the back rest (11) is tubular structure, it is characterized in that the front and rear beam junction, have one can split two hinge fold mechanisms (3) of rotation on the axis (22), above-mentioned fold mechanism (3) is by former and later two rotary pin shafts (4) (7) and front baffle (16), rear frame (14), frame plate (13), lock pin frame (18), lock pin (6) is formed, front baffle (16) and preceding major-minor beam (12) (8) are fixing, the rear frame (14) and the back rest (11) and axis (22) are fixing, lock pin frame (18) and front and back frame fixation, Foldable handlebar (2) is made up of (19) and overcoat to (20) cover in tubular, in the cover and exceedingly high bar (31) fixed jacket on groove (28) is arranged, tie bolt (21) is connected overcoat to (20) and interior cover to (19), bolt (21) by overcoat the groove of (20) (21) and interior cover flexible connection.

2, a kind of multifunction folding bicycle according to claim 1, it is characterized in that axis (22) is provided with little wheel carrier (5), little wheel carrier (5) is by little wheel frame axle (5), adapter plate (9), clamp (23), connecting pin (24), stage clip (25), cardan wheel (26) is formed, two adapter plates (9) are captiveed joint with axis (22), the set pin (29) on two adapter plates (9) and the upper end of little wheel frame axle (5) flexibly connect, after connecting two clamps (23), two connecting pins (24) are enclosed within the top of little wheel frame axle (5), stage clip (25) is in the below of clamp (23), the shoulder of the other end of stage clip (25) and little wheel frame axle (5) joins, and there is a Jiong shape groove adapter plate (9) lower end.