CN86205812U - Foldable double chain wheels driven bicycle - Google Patents

Abstract

The utility model discloses a small-scale foldable double chain wheels driven bicycle. The driving device of the bicycle is arranged on two sides of the left side and the right side of the rear wheel. Using a pair of feet to step the foot pedal alternatively upwards and downwards drives the bicycle to go ahead, and the speed is the same as the common large scale bicycle. The front wheel of the bicycle can be small to 150 millimeters, and the rear wheel can be small to 400 millimeters; the front fork assembly, the saddle seat and the foot pedal can be folded. The bicycle is also provided with a vibration damping and proof device. The dimension after folded can be small to 950*450*200 millimeters; the bicycle is carried over conveniently to trains, buses and elevators, and the total folding time is no more than one minute. Riding this bicycle is labor saving, safe and fast, and the bicycle is fit for both the young and the old.

Description

Foldable double chain wheels driven bicycle

The utility model is a kind of improvement of bicycle.

Known bicycle kind is a lot, presses the vehicle frame branch, and heavy type, coventional type, hand-held design, steamboat type, racing car type are arranged, and can divide folding and folding in the steamboat type car again; Divide by transmission mechanism, crank drive, reciprocal transmission etc. are arranged.Bicycle common on the market mainly is made up of following parts: hinge wheel, chain, flywheel, pedal, crank, vehicle frame, front fork, saddle, handlebar, front-wheel and trailing wheel etc.After the driving process of car was foot-operated pedal, crank was made circular movement, and the hinge wheel of riveting on crank also rotates thereupon, thereby makes chain gear, and the transmission of chain drives the flywheel on the rear axle again, and car just advances.This type of drive has the dead angle, and only some merit is used for advancing of car, so the speed of a motor vehicle is unhappy, also effort.Announced a kind of pedal-type bicycle (notification number GG85203897) on " Chinese patent communique ", this vehicle speed is fast, laborsaving.But shortcoming is a complex structure, bicycle is advanced through twice transmission, and speed changing structure is not suitable for the steamboat type car that is used to fold.

The purpose of this utility model provides that a kind of size is little, the speed of a motor vehicle is fast, little, easy to carry, the Foldable bicycle of vibrations.It is by chain reciprocating realization between the crank press wheel of bicycle and arranged on left and right sides, minor sprocket, back sprocket wheel that this car drives, and only a transmission of need gets final product.Characteristics in the transmission are, chain is with the transmission of crank press crop rotation U-shaped, and the speed of a motor vehicle doubles, and crank is long and only move up and down, and do not have the transmission dead angle, so speed is quick and labour-saving.If add the marshall springs press rods on the car, the elastic force of saddle damping spring is delivered on the driving device, then can quicken again with laborsaving, this car is referred to as dual-power bicycle.The above-mentioned transmission device and the speed of a motor vehicle are favourable greatly to the miniaturization of car, and when wheel is little during to 150mm, the speed of a motor vehicle still can reach the speed of a motor vehicle of Oversize vehicle.For reduced volume, make portablely and folding, the utility model has been done improvement to parts such as the front fork of known bicycle, saddle, pedals; In order to alleviate the sharp pounding that causes because of wheel is little, the utility model has been taked the actv. earthquake counter measure, has added shockproof box of front fork and saddle damping spring.

The utility model has following accompanying drawing.

Fig. 1 the utility model dual-power bicycle scheme drawing.

Fig. 2 flywheel part sectional view.

Fig. 3 flywheel lateral plan.

Fig. 4 ratchet scheme drawing.

Fig. 5 ratchet section-drawing.

The very heavy groove scheme drawing of Fig. 6.

The very heavy grooved profile figure of Fig. 7.

Very heavy and the very heavy groove of Fig. 8 cooperates figure.

Fig. 9 dual-power bicycle running part scheme drawing.

The scheme drawing at sprocket wheel position behind Figure 10.

The handlebar rot scheme drawing of Figure 11 front fork parts.

The front fork folder scheme drawing of Figure 12 front fork parts.

Figure 13 front fork folder section-drawing.

The shockproof box scheme drawing of Figure 14 front fork parts.

Figure 15 pedal parts scheme drawing.

Figure 16 damping spring block diagram.

Figure 17 the utility model folds scheme drawing.

Describe embodiment in detail below in conjunction with accompanying drawing.Embodiment is a kind of folding stepping type small-wheel bicycle, and its running part is formed (seeing Fig. 1, Fig. 9 and Figure 10) by chain ［ 16 ］, left and right marshall springs press rods ［ 12 ］, marshall springs power wheel ［ 45 ］, crank press wheel ［ 46 ］, flywheel ［ 20 ］ and the back sprocket wheel ［ 47 ］ that is symmetrical in trailing wheel ［ 26 ］ both sides.Chain one end is fixed on the left marshall springs press rods ［ 12 ］, walk around left minor sprocket ［ 31 ］ in left marshall springs power wheel ［ 45 ］, left crank press wheel ［ 46 ］, the flywheel ［ 20 ］ then, go to through back sprocket wheel ［ 47 ］ that the right minor sprocket in the flywheel ［ 20 ］, right crank press are taken turns, right marshall springs power wheel again, be fixed at last on the right marshall springs press rods, left and right marshall springs press rods is symmetrical in the both sides (the right side part does not draw among Fig. 9) of bicycle saddle support ［ 25 ］.Back sprocket wheel ［ 47 ］ is a wheel flutter, for this reason, is inconsistent through the chain of sprocket wheel ［ 47 ］ later with the chain engages direction of and arranged on left and right sides, and chain ［ 16 ］ interlude is 90 and spends and turn to left and right two sections, to avoid owing to meshing the inconsistent distortion that causes chain of direction.The length of chain interlude will suit, can not be long can not be too short, with two joints and back sprocket wheel ［ 47 ］ and the engagement of left and right minor sprocket that prevents chain.Marshall springs power wheel ［ 45 ］ can be fixed on the saddle pillar ［ 25 ］, and its center shaft position is higher than the position of chain fixed end, and marshall springs power wheel ［ 45 ］ is located to put one and gone up chain guard ［ 14 ］.Crank press wheel ［ 46 ］ is fixed on the knee of toggle-action lever ［ 23 ］, and it and marshall springs power wheel ［ 45 ］, minor sprocket ［ 31 ］ are on the plane.Crank press wheel ［ 46 ］ and minor sprocket ［ 31 ］ have chain case ［ 21 ］ protection, have guided wheel slot ［ 28 ］ on the chain case ［ 21 ］, and its track is consistent with the travel path of crank press wheel ［ 46 ］.Back sprocket wheel ［ 47 ］ places the back lower place of trailing wheel ［ 26 ］, is fixed in the chain cover ［ 27 ］.Chain cover ［ 27 ］ is made with crash-resistant steel plate, not only protects back sprocket wheel ［ 47 ］, and can prevent to turn over behind the bicycle, plays the safety guard-safeguard effect.Chain case ［ 21 ］ and chain cover ［ 27 ］ are communicated with, and be unimpeded to guarantee chain ［ 16 ］ transmission between marshall springs power wheel ［ 45 ］, crank press wheel ［ 46 ］, minor sprocket ［ 31 ］ and back sprocket wheel ［ 47 ］.

The flywheel of present embodiment ［ 20 ］ is one and is made up of left and right two small flywheels that are assemblied on the back axle ［ 41 ］.Small flywheel is formed (seeing Fig. 2 and Fig. 8) by minor sprocket ［ 31 ］, outer bearing ［ 40 ］, neck bearing ［ 39 ］, very heavy groove ［ 38 ］, ratchet ［ 37 ］, big bearing ［ 36 ］, inner washer ［ 35 ］, cover of dust ［ 33 ］, outer washer ［ 32 ］, Spring Card ［ 42 ］ and very heavy ［ 43 ］.The fixing available nut of flywheel ［ 20 ］ on back axle ［ 41 ］.The minor sprocket number of teeth can be 8-30, and when one timing of crank press wheel stroke, the number of teeth is few more, and the speed of a motor vehicle is fast more, can select the suitable number of teeth as required.Adopt outer bearing ［ 40 ］ and neck bearing ［ 39 ］ can make flywheel ［ 20 ］ more stable with the relative position of back axle ［ 41 ］.Very heavy groove ［ 38 ］, ratchet ［ 37 ］, very heavy ［ 43 ］ and very heavy spring ［ 44 ］ constitute the power-transfer clutch of bicycle.Ratchet ［ 37 ］ is fixed on a skin ［ 34 ］ inner ring by its outside thread, and when minor sprocket ［ 31 ］ when rotating forward, very heavy ［ 43 ］ in very heavy groove ［ 38 ］ and ratchet ［ 37 ］ engagement have driven an axle skin ［ 34 ］ and rotated, thereby bicycle is travelled forward; Otherwise then separate minor sprocket ［ 31 ］ idle running.The axle skin ［ 34 ］ of bicycle can be done relative motion with back axle ［ 41 ］ by outer bearing ［ 40 ］, neck bearing ［ 39 ］ and big bearing ［ 36 ］.

The more known toggle-action lever of the toggle-action lever of present embodiment ［ 23 ］ length is long, and the centre is bending more than 1 times, and is laborsaving when foot-operated.Crank press wheel ［ 46 ］ is housed in the toggle-action lever knee, and toggle-action lever ［ 23 ］ is installed on the back vent ［ 19 ］, and it can rotate by bearing.Can fold with toggle-action lever ［ 23 ］ bonded assembly pedal parts ［ 24 ］.

Component set-ups such as the running part of said structure and toggle-action lever, pedal actuating device, its driving process is as follows: when foot-operated left foot is pedaled ［ 24 ］, left side toggle-action lever ［ 23 ］ moves down, the crank press wheel ［ 46 ］ that is fixed on the toggle-action lever ［ 23 ］ also moves down, thereby makes chain ［ 16 ］ to underdrive.The transmission of chain ［ 16 ］ has driven left minor sprocket ［ 31 ］ and has rotated forward, and very heavy ［ 43 ］ in the small flywheel in flywheel ［ 20 ］ left side and ratchet ［ 37 ］ engagement drive axle skin ［ 34 ］ and rotate thereupon, and bicycle promptly marches forward.Meanwhile, very heavy in the small flywheel of flywheel ［ 20 ］ right side separated with ratchet, minor sprocket idle running.In like manner, when riding right pedal, cause the transmission of right side running part corresponding component, make car forward.By left and right pin tap pedal up and down alternately, chain ［ 16 ］ in the reciprocal transmission in the left and right sides of car, advances bicycle by back sprocket wheel ［ 47 ］ fast like this.As can be seen from Figure 9, when crank press wheel ［ 46 ］ move down S apart from the time, chain becomes U-shaped, chain gear length is 2S, i.e. chain gear length is 2 times of crank press wheel ［ 46 ］ stroke, and does not have the transmission dead angle, thereby the speed of a motor vehicle heightens.

Marshall springs press rods ［ 12 ］ plays the effect to the bicycle additional power among Fig. 9.Marshall springs press rods ［ 12 ］ is along with damping spring ［ 13 ］ compresses and loosen and upper and lower move, and chain ［ 16 ］ is also because of being subjected to the effect transmission up or down of marshall springs press rods ［ 12 ］, and the rotation of minor sprocket has been quickened in this transmission, makes the rider more laborsaving.Therefore the driving of this car is subjected to the effect of dual power, and a kind of is the power of riding, and another kind is the elastic force of damping spring ［ 13 ］.Marshall springs elastic force is from the effect of human body to saddle ［ 10 ］, and this power passes to damping spring ［ 13 ］ by saddle fall way ［ 76 ］, sliding sleeve ［ 30 ］ and spring upper bracket ［ 73 ］ and following bracket ［ 74 ］.This car is referred to as dual-power bicycle.If the two ends of the chain of car are separately fixed on the left and right sides of chain stay ［ 17 ］, remove the marshall springs power wheel from, then just become the single action force bike.

The front fork parts of present embodiment are by making handlebar folding handlebar rot ［ 2 ］, fall way ［ 3 ］, preceding arm ［ 4 ］, front fork folder ［ 5 ］, vertical tube of front fork ［ 6 ］, the shockproof box of front fork ［ 7 ］, fork blade ［ 8 ］ form (see figure 1).The saddle parts are made up of saddle ［ 10 ］, saddle adjusting knob ［ 11 ］, marshall springs press rods ［ 12 ］, damping spring ［ 13 ］, saddle pillar ［ 25 ］, saddle fall way ［ 76 ］, sliding sleeve ［ 30 ］, turning cylinder ［ 22 ］, and turning cylinder can be the rivet form.The vehicle frame part is by pipe ［ 18 ］, upright fork ［ 19 ］, chain stay ［ 17 ］ are formed (see figure 1) down.

The handlebar of present embodiment ［ 1 ］ can rotate with respect to handlebar fall way ［ 3 ］ by handlebar rot ［ 2 ］.Handlebar ［ 1 ］ is fixed on the handlebar rot, and the sleeve pipe ［ 50 ］ of handlebar rot ［ 2 ］ is enclosed within outside the handlebar fall way ［ 3 ］, and a pin hole (seeing Figure 11) is respectively arranged on sleeve pipe ［ 50 ］ and the handlebar fall way.When bicycle is folding, is fixed on pin ［ 49 ］ on the spring leaf ［ 48 ］ and pierces into pin hole on sleeve pipe ［ 50 ］ and the handlebar fall way ［ 3 ］ simultaneously, sleeve pipe ［ 50 ］ can not be rotated with respect to fall way ［ 3 ］; During bicycle folding, as long as pin is pressed inward, while rotating casing ［ 50 ］ just can be according to folding requirement, forwards handlebar ［ 1 ］ near vehicle body appropriate location.

Present embodiment front fork parts can be folding by front fork folder ［ 5 ］; front fork folder ［ 5 ］ have one with preceding arm ［ 4 ］ bonded assembly folding joint ［ 51 ］; folding joint ［ 51 ］ cooperates by circular shaft ［ 61 ］ with folded slot ［ 53 ］; folding joint ［ 51 ］ can rotate around circular shaft ［ 61 ］; the outside of folding joint ［ 51 ］ and folded slot ［ 53 ］ is with folding protecting sleeve; the first half of protecting sleeve is a protection pipe ［ 57 ］; it is protected the connecting bridge of preceding arm ［ 4 ］ and folding joint ［ 51 ］ interior; pipe ［ 57 ］ bottom connects a protection semicircle pipe ［ 60 ］; this semicircle pipe ［ 60 ］ connects another protection semicircle pipe ［ 62 ］ by hinge ［ 56 ］ again; respectively connect a binding ［ 55 on two protection semicircle pipes; 59 ］; respectively open a tapped bore ［ 54 on the two boards; 52 ］, when two semicircle pipes closed, two bindings also closed; two bindings are clamped by two tapped bore ［ 52,54 ］ with nut ［ 63 ］.Like this, folding joint ［ 51 ］ just can not rotate, when guaranteeing by bike, with preceding arm ［ 4 ］ on a line of centers.When car is folding, as long as unclamp nut ［ 63 ］, open protection semicircle pipe ［ 62 ］, and, fold front fork again front fork part (comprising front-wheel) turnback, it tightly is attached on the vehicle frame, vehicle body is reduced greatly and shorten.

The fork blade ［ 8 ］ of present embodiment front fork parts is connected with vertical tube of front fork ［ 6 ］ by the shockproof box of front fork ［ 7 ］, and this is that a kind of elasticity connects, and the vibrations that can alleviate car can be regulated the elasticity size according to human body weight simultaneously.One ball cap ［ 67 ］ is arranged in the middle of the fork scapulet ［ 66 ］ of fork blade ［ 8 ］, be built-in with antivibration spring ［ 64 ］ at vertical tube of front fork ［ 6 ］, by the screw ［ 65 ］ that moves about of the circular hole scalable on the ball cap ［ 67 ］, the turn of the screw ［ 65 ］, fork blade ［ 8 ］ elasticity is just big, can be fit to the adult by bike, positive the turn of the screw ［ 65 ］, elasticity is just little, and suitable child by bike.One end of fork scapulet ［ 66 ］ has a slotted hole, runs through the width of fork scapulet ［ 66 ］, by long spiro nail ［ 68 ］, its end is fixed on the shockproof box, and its other end is blocked by shockproof box.Like this, fork blade ［ 8 ］ is with after front-wheel ［ 9 ］ is connected, the vibrations that alleviate car with regard to springiness.

The saddle pillar of present embodiment vehicle frame ［ 25 ］ is connected on the chain stay ［ 17 ］ by turning cylinder ［ 22 ］, can turning cylinder ［ 22 ］ be the axle center, rotates the available rivet form of turning cylinder ［ 22 ］ along standpipe ［ 15 ］.When saddle pillar ［ 25 ］ is not folding, utilize spring pin ［ 78 ］ to be fixed on the standpipe ［ 15 ］.Spring pin ［ 78 ］ is scalable by spring ［ 77 ］, and spring ［ 77 ］ is installed in going up in the pipe ［ 75 ］ of saddle pillar ［ 25 ］.When saddle pillar ［ 25 ］ is folding, with pin breakdown bar ［ 79 ］ spring pin ［ 78 ］ is ejected standpipe ［ 15 ］, just can down manage ［ 18 ］ direction to saddle pillar ［ 25 ］ and rotate, overlap on folding front fork parts, overall height has just reduced.

The standpipe of present embodiment vehicle frame ［ 15 ］ is an arc, and is consistent with the rotation track of saddle pillar ［ 25 ］ to guarantee.

The pedal parts of present embodiment ［ 24 ］ can fold, and pedal ［ 72 ］ can be that center of circle rotation reaches folding purpose with toggle-action lever ［ 23 ］ one ends by swinging head ［ 69 ］, pin ［ 70 ］, fixing collar ［ 71 ］.

The saddle of present embodiment ［ 10 ］ springiness, it is connected with damping spring ［ 13 ］ with following bracket ［ 74 ］ by fall way ［ 76 ］, sliding sleeve ［ 30 ］, spring upper bracket ［ 73 ］, produces cushioning effect.

The front-wheel of present embodiment ［ 9 ］ is of a size of 150mm, and trailing wheel ［ 26 ］ is of a size of 400mm.

In sum, be of a size of 950 * 450 * 200mm after the utility model is folding, can be carried into easily on train, automobile and the elevator, its speed of a motor vehicle is suitable with large-scale bicycle, and the vehicle body vibrations are little. Ride this car not only laborsaving but also fast, safety, all-ages. It is easy, quick that bicycle is amounted to, and can amount to complete in 1 minute.

Claims (16)

1, a kind of folding double-stranded wheel bicycle, mainly by chain, flywheel, crank, vehicle frame, front fork, saddle, handlebar, front-wheel and rear wheel part are formed, the driving device that is characterised in that of the present utility model is by chain [16], a left side, the right side is symmetrical in the marshall springs press rods [12] of trailing wheel [26] both sides, marshall springs power wheel [45], crank press wheel [46], flywheel [20] and back sprocket wheel [47] are formed, flywheel [20] is by a left side, two small flywheels of right symmetry are formed, small flywheel has minor sprocket [31], outer bearing [40], neck bearing [39], very heavy groove [38], ratchet [37], big bearing [36], inner washer [35], cover of dust [33], outer washer [32] and Spring Card [42] part, ratchet [37] has outer tired line to be fixed on a skin [34] inner ring, chain [16] two ends are separately fixed at a left side, on the right marshall springs press rods [12], chain [a 16] interlude and a left side, the right side is 90 degree for two sections and turns to, chain moves with crank press wheel [46] and takes the shape of the letter U, crank press wheel [46] is fixed on the toggle-action lever [23], the front fork parts have can make the folding rot [2] of handlebar [1] be connected with fall way [3] with handlebar [1], have the folding front fork folder [5] of front fork parts is connected with vertical tube of front fork [6] with preceding arm [4], the saddle parts have folding vehicle seat support [25] to be connected with chain stay [17] with saddle [10], and toggle-action lever is connected with folding pedal on [23].

2, bicycle as claimed in claim 1 is characterized in that toggle-action lever ［ 23 ］ is crooked shape, is fixed on the back vent ［ 19 ］.

3, bicycle as claimed in claim 1 or 2, the number of teeth that it is characterized in that minor sprocket ［ 31 ］ are 8-30.

4, bicycle as claimed in claim 1 or 2 is characterized in that the front fork parts are equipped with shockproof box ［ 7 ］.

5, bicycle as claimed in claim 3 is characterized in that the front fork parts are equipped with shockproof box ［ 7 ］.

6, bicycle as claimed in claim 1 or 2 is characterized in that the saddle parts have damping spring ［ 13 ］.

7, bicycle as claimed in claim 3 is characterized in that the saddle parts have damping spring ［ 13 ］.

8, bicycle as claimed in claim 4 is characterized in that the saddle parts have damping spring ［ 13 ］.

9, a kind of folding double-stranded wheel bicycle, mainly by chain, flywheel, crank, vehicle frame, front fork, saddle, handlebar, front-wheel and rear wheel part are formed, the driving device that is characterised in that of the present utility model is by chain ［ 16 ］, a left side, the right side is symmetrical in the crank press wheel ［ 46 ］ of trailing wheel ［ 26 ］ both sides, flywheel ［ 20 ］ and back sprocket wheel ［ 47 ］ are formed, flywheel ［ 20 ］ is by a left side, two small flywheels of right symmetry are formed, small flywheel has minor sprocket ［ 31 ］, outer bearing ［ 40 ］, neck bearing ［ 39 ］, very heavy groove ［ 38 ］, ratchet ［ 37 ］, big bearing ［ 36 ］, inner washer ［ 35 ］, cover of dust ［ 33 ］, outer washer ［ 32 ］ and Spring Card ［ 42 ］ part, ratchet ［ 37 ］ has outside thread to be fixed on a skin ［ 34 ］ inner ring, chain ［ 16 ］ two ends are separately fixed at the left and right sides of chain stay ［ 17 ］, chain ［ a 16 ］ interlude and a left side, the right side is 90 degree for two sections and turns to, chain moves with crank press wheel ［ 46 ］ and takes the shape of the letter U, crank press wheel ［ 46 ］ is fixed on the toggle-action lever ［ 23 ］, the front fork parts have the rot ［ 2 ］ that can make handlebar ［ 1 ］ folding, be connected with fall way ［ 3 ］ with handlebar ［ 1 ］, make the folding front fork folder ［ 5 ］ of front fork parts in addition, be connected with vertical tube of front fork ［ 6 ］ with preceding arm ［ 4 ］, the saddle parts have folding vehicle seat support ［ 25 ］ to be connected with chain stay ［ 17 ］ with saddle ［ 10 ］, and toggle-action lever is connected with folding pedal on ［ 23 ］.

10, bicycle as claimed in claim 9 is characterized in that toggle-action lever ［ 23 ］ is crooked shape, is fixed on the back vent ［ 19 ］.

11, as claim 9 or 10 described bicycles, the number of teeth that it is characterized in that minor sprocket ［ 31 ］ is 8-30.

12,, it is characterized in that the front fork parts are equipped with shockproof box ［ 7 ］ as claim 9 or 10 described bicycles.

13, bicycle as claimed in claim 11 is characterized in that the front fork parts are equipped with shockproof box ［ 7 ］.

14,, it is characterized in that the saddle parts have damping spring ［ 13 ］ as claim 9 or 10 described bicycles.

15, bicycle as claimed in claim 11 is characterized in that the saddle parts have damping spring ［ 13 ］.

16, bicycle as claimed in claim 12 is characterized in that the saddle parts have damping spring ［ 13 ］.

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