CN2382632Y - Folding bicycle - Google Patents

Abstract

The utility model discloses a folding bicycle, which comprises a handlebar, a bicycle beam, a front wheel, a rear wheel, a saddle and pedals, wherein, the bicycle beam comprises a shaft core of the bicycle beam, and a shaft sleeve of the bicycle beam; the front end of the shaft core of the bicycle beam is connected with a front tube of the bicycle beam, and a vertical tube of a front fork used for supporting the front wheel passes through the front tube of the bicycle beam; the shaft center of the front tube of the bicycle beam is deviated from the center line of the front and the rear wheels, the vertical tube of a front fork can rotate in the front tube of the bicycle beam and can be used as the function of a folding shaft, causing the rotation degree of the front wheel to be overlapped partially with the rear wheel; a spring pin and an anti-loose screw are arranged on the shaft sleeve of the bicycle beam, and the shaft core of the bicycle beam is fixed on the shaft sleeve of the bicycle beam. When the spring pin and the anti-loose screw are loosened, the shaft core of the bicycle beam can move backwards.

Description

Folding bicycle

The utility model relates to a kind of folding bicycle.

Along with the continuous development of society, new type traffic tool is more and more, and traffic is more and more flourishing, but traditional bicycle not only is not eliminated, and has obtained great development on the contrary, constantly weeds out the old and bring forth the new towards superior, convenient purification, personalized direction.In the city, because the living space is narrow, people wish that bicycle occupies little space as far as possible, are put in automobile rear cabinet or top cover upstairs or with bicycle in order to carry bicycle, and it is little that people wish that also bicycle can be tried one's best.Certainly, in the rural area,, wish especially that on the road of mire bicycle is convenient to lift with hands because road conditions is poor.But then, bicycle also will satisfy the needs of people's saddle horse, and its size can not be too little.This just requires bicycle to fold.

The purpose of this utility model is exactly in order to overcome the above problems, and a kind of bicycle is provided, can it is folding when needing, and reduce it and take up space, be convenient to deposit and carry.

The utility model realizes that the scheme of above-mentioned purpose is: a kind of folding bicycle, comprise handlebar, Che Liang, front-wheel, trailing wheel, saddle, stretcher, it is characterized in that: described car beam comprises car beam axle core, car beam axle sleeve, pipe is connected before car beam axle core front end and the car beam, and the vertical tube of front fork that is used for supporting front-wheel pipe before the car beam passes; The line of centers of the axis deviation front and back wheel of pipe before the car beam, vertical tube of front fork can rotate and can play the effect of folding shaft therein, and front-wheel 180 degree that turn left partly are superimposed together with trailing wheel; On car beam axle sleeve, also have spring pin and jam nut, car beam axle core is fixed on the car beam axle sleeve; When trip spring pin and jam nut, can move car beam axle core backward.

Adopt the beneficial effect of above scheme: when needing to fold, only need unclamp spring pin and screw on the axle sleeve, car beam axle core is moved backward, front-wheel 180 degree that rotate backward partly are superimposed together with trailing wheel, can finish to a certain degree folding, bicycle is taken up space reduce greatly, easy to carry and store.

Fig. 1 is a folding bicycle deployed condition scheme drawing.

Fig. 2 is a folding bicycle folded state scheme drawing.

Fig. 3 is the folded state schematic top plan view.

Fig. 4 is one of part amplification plan view (handlebar, Che Liang, saddle pipe, an axis).

Fig. 5 is two (bent axle, luggage carrier, suspended axle, rear wheel frames) of part amplification plan view.

Fig. 6 is three kinds of telescoping mechanism axis cores, axle sleeve, spring pin, screw scheme drawing.

Fig. 7 is a stretcher folding device scheme drawing.

Fig. 8 is a part critical component scheme drawing in the stretcher folding device.

Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.

Embodiment one: see Fig. 1, Fig. 2, shown in folding bicycle comprise handlebar 1, Che Liang, front-wheel 9, trailing wheel 29, saddle 15, stretcher 23, described car beam comprises car beam axle core 11, car beam axle sleeve 12, pipe 10 is connected before car beam axle core 11 front ends and the car beam, and the vertical tube of front fork 8 that is used for supporting front-wheel 9 is managed 10 before the car beam and passed; The line of centers of the axis deviation front and back wheel 9,29 of pipe 10 before the car beam, vertical tube of front fork 8 can rotate and can play the effect of folding shaft therein, and front-wheel 9 180 degree that turn left are superimposed together with trailing wheel 29 parts; On car beam axle sleeve 12, also have spring pin 4 and jam nut 7, car beam axle core 11 is fixed on the car beam axle sleeve 12; When trip spring pin 4 and jam nut 7, can move car beam axle core 11 backward.

Similar with the car beam, described handlebar 1 also comprises handlebar axis core 5 and handlebar axle sleeve 6, and has spring pin 4 and jam nut 7 that the two is fixed, and when unclamping, handlebar axis core 5 can move in handlebar axle sleeve 6; Described saddle 15 also comprises saddle axle core 14 and saddle axle sleeve 13, and has spring pin 4 and jam nut 7 that the two is fixed, and when unclamping, saddle axle core 14 can move in saddle axle sleeve 15.Handlebar can also interlock to the oblique turnback in centre and keep flat, as shown in Figure 3.

Folding bicycle also includes the folding device of stretcher 23 in this example, and it comprises axis 17, crank 18, anistree tube 19, anistree core 20, stretcher folding shaft 21, assembling screw 22, stretcher 23; In anistree tube 19 anises that are fixed in the crank 17, the size of the anise of anistree tube 19 and folding shaft 21 both inner rings matches, and anistree core 20 can slide therein, and stretcher 23 is enclosed within on the folding shaft 21, fixes with screw pins; Folding shaft 21 is screwed in the crank 18.When anistree core 20 is extracted stretcher folding shaft 21, make stretcher 23 rotate 90 degree to 180 degree to the centre, can finish the folding of stretcher.

During expansion, need not unclamp the spring pin 4 of each burst, need only also upward get final product in axle sleeve (6,12,13) by shifting axle core (5,11,14) with jam nut lock shaft core (5,11,14).

More than be the main contents general introductions,, below structure and effect be further described for the ease of understanding.

1, agent structure: see that Fig. 1,2,3,4,5 luggage carriers 16, car beam axle sleeve 12, saddle axle sleeve 13, axis 17 and suspended axle core 24 link together, the bearing at suspended axle core 24 two is connected with rear wheel frame 26, and pendulum spring 27 is connected between rear wheel frame 26 and the luggage carrier 11.Car beam axle core 11 front ends are connected with pipe 10 before the car beam, the outside that protrudes in that section vertical tube of front fork 8 of the preceding pipe 10 of car beam is inserted in a sleeve pipe again, and with screw pins the two is fixed, sleeve pipe (on the left side) is connected with handlebar axle sleeve 6 (on the right) again, and the effect of sleeve pipe is convenient for assembly and change part.Handlebar axis core 5 upper ends are connected with U-shaped frame 2, and two of U-shaped frame 2 is a U-lag, and the both sides of U-shaped are removed in the centre, and a Cincinnati so just can be placed folding left and right handlebar 1 of coming.Handlebar 1 is connected by the angled handlebar folding shaft 3 of pendulum with U-shaped frame 2, and can interlock after folding keeps flat.Spring pin 4 is on one side of U-shaped, and its angle upwards prevents that handlebar 1 from upwards rotating.

2, three axle sleeves 6,12,13 and an axle core 5,11,14: the axle sleeve of handlebar 1, car beam and saddle 15-axle core mechanism is identical, sees Fig. 6 a, 6b.All there are jam nut 7 and spring pin 4 in the outside of three axle sleeves 6,12,13, and screw plays the effect of becoming flexible of preventing.Spring pin 4 plays the effect that prevents that the core from sliding, and the angle of selling at car beam axle core 11 places prevents that car beam axle core 11 from sliding backward backward, but can be to front slide, angle at handlebar 1 and saddle pipe place pin is downward, prevents handlebar axis core 5, saddle axle core 14 to lower slider, but can upwards slide.The tail end of three axle cores 5,11,14 all has outstanding spacing 30, prevents that the core 5,11,14 from deviating from from axle sleeve 6,12,13.

3, stretcher is folding: see Fig. 7, Fig. 8 a, 8b, 8c, 8d, it comprises axis 17, speed change axis, crank 18, anistree tube 19, anistree core 20, stretcher folding shaft 21, assembling screw 22, stretcher 23.In anistree tube 19 anises that are fixed in the crank 17, the anise of anistree tube 19 and folding shaft 21 both inner rings big or small the same.Anistree core 20 can slide therein, and stretcher 23 is enclosed within on the folding shaft 21, fixes with screw pins; There is the double nuts location in the outside, and assembling screw 23 is enclosed within on the folding shaft 21, fixes with latch, and the two is screwed in the crank 18, and latch is taken out, and fixing assembling screw 22 and crank 18 with screw pins, folding shaft can be rotated in crank 18 and do not deviate from like this.In the middle of folding shaft, anistree core 20, the crank 18 through hole is arranged all, an iron wire is inserted in the through hole, the head that iron wire is expanded places the major part of anistree core through hole, the other end is stretched out crank and is made a small circle, stretch out crank 18 slightly, can hook small circle with cleek when folding and extract anistree core 20, Folding pedal plate 23.The center of anistree core 20 and the misalignment of folding shaft anise, both only cooperate a running condition direction, as long as stretcher is turned to the right and left (running condition), anistree core 20 inserts in the folding shaft anise under the pressure of spring naturally, and needn't remove to stir anistree core 20 during expansion.The speed change axis plays the effect that improves rotating speed, because trailing wheel is too little, it has two gears arranged side by side and chain, and one links to each other with axis, and another links to each other with back flying wheel.

Number in the figure and part title are listed as follows: 1: handlebar, 2:U shape frame, 3: handle bar folding Axle, 4: spring catch, 5: handlebar axis core, 6: handlebar axle sleeve, 7: jam nut, 8: front fork Standpipe, 9: front-wheel, 10: front-wheel, 11: car beam axle core, 12: car beam axle sleeve, 13: saddle Axle sleeve, 14: saddle axle core, 15: saddle, 16: luggage carrier, 17: axis, 18: crank, 19: anistree tube, 20: anistree core, 21: pedal folding shaft, 22: assembling screw, 23: pin Pedal, 24: suspended axle core, 25: bearing, 26: rear wheel frame, 27: hang spring, 28: become Speed axis, 29: trailing wheel, 30: spacing.

Claims (3)

1. folding bicycle, comprise handlebar (1), car beam, front-wheel (9), trailing wheel (29), saddle (15), stretcher (23), it is characterized in that: described car beam comprises car beam axle core (11), car beam axle sleeve (12), pipe (10) is connected before car beam axle core (11) front end and the car beam, and the vertical tube of front fork (8) that is used for supporting front-wheel (9) is managed (10) before the car beam and passed; The line of centers of the axis deviation front and back wheel (9,29) of pipe (10) before the car beam, vertical tube of front fork (8) can rotate and can play the effect of folding shaft therein, and front-wheel (9) 180 degree that turn left are superimposed together with trailing wheel (29) part; Go up spring pin (4) and jam nut (7) in addition at car beam axle sleeve (12), car beam axle core (11) is fixed on the car beam axle sleeve (12); When trip spring pin (4) and jam nut (7), can move car beam axle core (11) backward.

2. folding bicycle as claimed in claim 1, it is characterized in that: described handlebar (1) also comprises handlebar axis core (5) and handlebar axle sleeve (6), and having spring pin (4) and jam nut (7) that the two is fixed, when unclamping, handlebar axis core (5) can move in handlebar axle sleeve (6); Described saddle (15) also comprises saddle axle core (14) and saddle axle sleeve (13), and has spring pin (4) and jam nut (7) that the two is fixed, and when unclamping, saddle axle core (14) can move in saddle axle sleeve (15).

3. folding bicycle as claimed in claim 1 or 2, it is characterized in that: also include the folding device of stretcher (23), it comprises axis (17), crank (18), anistree tube (19), anistree core (20), stretcher folding shaft (21), assembling screw (22), stretcher (23); Anistree tube (19) is fixed in the anise in the crank (17), and the size of the anise of anistree tube (19) and both inner rings of folding shaft (21) matches, and anistree core (20) can slide therein, and stretcher (23) is enclosed within on the folding shaft (21), fixes with screw pins; Folding shaft (21) is screwed in the crank (18).

Images