CN205469621U - Oscillating does not have actuating mechanism of dead point drive bicycle - Google Patents

Abstract

The utility model provides a bicycle cooperatees that oscillating does not have actuating mechanism of dead point drive bicycle oscillating does not have actuating mechanism of dead point drive bicycle and current, the only need is to current bicycle axis (four to six -tenehs), reform transform a little left side crank (8) and right crank (4), and increase left ratchet (7), right side ratchet (5), left side pawl (10), right side pawl (11), reverse wheel (1), wire rope (2) and dog (12) etc, and the fixed connection of left crank (8) and right crank (4) that will be original and bicycle axis (6) makes the swing rotation into and is formed by connecting. This kind of oscillating does not have dead point drive bicycle and has overcome the dead point problem that original bicycle rotary driving brought, because the swing angle only is between 72 degrees~90 degrees, far is lighter than 180 degrees of rotary driving simultaneously, so articulate length can have increase by a relatively large margin, just makes the driving moment have increase substantially at the same drive masterpiece under with like this. Thereby also make the climbing capability greatly increased of bicycle, can fully improve manpower drive's efficiency. This kind of oscillating does not have dead point drive arrangement can be applied to double round bicycle and the tricycle bicycle of riding of riding to and other driving system that need manpower drive.

Description

A kind of swing type drives the drive mechanism of bicycle without dead point

Technical field

This utility model relates to a kind of manpower riding bicycle, particularly relates to a kind of swing type without riding that dead point drives The drive mechanism of bicycle.

Background technology

Since creating the bicycle with Modern Significance before a century, the driving of bicycle is nearly all by people Tap pedal has rotated.Circle it is known that manpower steps pedal, not only have a fatal dead point to make Become the phenomenon of " the most idle ", even and if the lowest at the drive efficiency of dead center, thus this has resulted in limited The biggest waste of manpower.

Along with the diversity development of society, bicycle a kind of walking-replacing tool, but also be a kind of fitness tool and Sports tournament apparatus, or a kind of amusement toy etc..In numerous bicycle application, bicycle to be improved each Planting application function, and the manpower utilization ratio how improving bicycle should be all an important development direction, this is also people To required for the performance of bicycle.

Summary of the invention

This utility model relates to a kind of manpower riding bicycle, particularly relates to a kind of swing type without riding that dead point drives The drive mechanism of bicycle.This drive mechanism changes previous pedal circumference and steps pedal pattern, but at bicycle middle shaft Two ratchets of upper left and right fixed installation, are connected a ratchet on about two cranks installed with sliding pair with axis respectively, So when manpower steps the pedal of the crank other end, crank is around middle axis rotation, and the ratchet being simultaneously connected with crank is also Rotating, the other end of ratchet engages with ratchet, thus drives ratchet and pedal Tong Bu to rotate, ratchet and axis For fixing connection, and then by the sprocket wheel on axis and chain drive rear wheel.Meanwhile, when a foot-operated dynamic toe clip When a dynamic bent axle rotates, a steel wire rope being connected with two bent axles drive another one by a reverse wheel Crank makees counter rotational movement.Owing to ratchet is unidirectional transmission, when a foot-operated dynamic pedal rotates the angle of a ratchet slot After degree, the pedal just starting to step an other foot makees same motion.So change down when two foot alternate wheels and step left and right Pedal is achieved that the continuous rotation of axis.In this process, foot-operated dynamic left and right, left and right pedal, left and right bent axle and left and right ratchet All in alternatively swinging state, and left and right ratchet and axis and later transmission are at continuous rotary state.

Foot to step the angle turned over relevant with the groove number n on ratchet every time, for having the ratchet of n groove, then left or Right crus of diaphragm often steps a pedal, and ratchet gearing axis below and sprocket wheel etc. will rotate 360/n degree.

Owing to the pendulum angle of both feet can design in the upper and lower ± 360/2n degree scope with horizontal level as basic point, so For there is the ratchet of n groove, the cos that useful effect torque arm length is crankshaft length (360/2n) of bent axle～1 times.Generally Cos (360/2n) can be designed much larger than 0 and closer to 1.And for existing circumference drives bicycle, having of bent axle 0～1 times of the effect a length of crankshaft length of acting force arm.So, the bicycle of wobble drive not only avoids the driving of existing circumference The dead unit problem up and down of bicycle pedal, solves pedal in upper bottom dead center-nearby drive efficiency problem on the low side the most simultaneously.Reason In opinion, the groove number n of ratchet is the most, and the angle every time turned over can be the least, and the useful effect arm of force of bent axle can be the biggest.If but Ratchet slot number the most necessarily brings the most foot-operated angle turned over the least, if to reach same gait of march to need larger amplitude Degree ground changes follow-up Chain conveyer gear ratio, and this is unfavorable for sprocket design below.Therefore 4 grooves or the ratchet of five groove structures are selected It it is the moderate organization plan of comparison.

Further, since left and right crank is become present swing state by original rotary state, for ensureing the upper and lower of pedal Amplitude of fluctuation is constant with amplitude when rotating, and the length of crank can suitably increase.For having the ratchet of n groove, crank length 1/sin (360/2n) times can be increased.Owing to 1/sin (360/2n) is more than or equal to 1, so that crank length increases.Along with song The increase of handle length, will produce bigger rotating torque under identical stepping power of riding, such that it is able to make this without dead point pendulum Dynamic driving bicycle has bigger climbing capacity.

The technical solution of the utility model:

Drive the basic summary of the invention of bicycle without dead point according to above-mentioned swing type, pedal often swings the angle once turned over Spending relevant with the groove number n on ratchet, ratchet slot number n not only determines the rotational angle swung once, also determines having of bent axle Effect arm and the length of bent axle.If select 4 groove ratchets then left or right foot often step a pedal, ratchet gearing below in Axle and sprocket wheel rotate 360/4=90 degree, if selecting 5 groove ratchets then left or right foot often to step a pedal, ratchet gearing Axis and sprocket wheel below rotate 360/5=72 degree.Owing to the pendulum angle of both feet can design with horizontal level as basic point Upper and lower ± 36 degree (5 grooves 72 degree) or up and down ± 45 degree (4 groove 90 degree), so for 4 groove ratchets, the useful effect of bent axle Torque arm length is between 0.707～1 times of crankshaft length, and for 5 groove ratchets, the useful effect torque arm length of bent axle is Between 0.809～1 times of crankshaft length, its effective arm of force action length is bigger.And for existing circumference drives bicycle, Between useful effect torque arm length is crankshaft length 0～1 times of bent axle.It addition, for 4 groove ratchets, crank length can increase It is added to original 1.414 times, and for 5 groove ratchets, crank length can increase to original 1.701 times, the length of its bent axle Increasing degree is more moderate.

In the swing process of pedal and bent axle, for ensureing alternately swinging up and down of two pedals and bent axle, devise one Bar walks around the steel wire rope of reverse wheel, and the two ends of this steel wire rope are separately fixed near the centre position of left and right crank, by reverse wheel Realize the commutation up and down at steel wire rope two ends.When manpower steps downwards pedal, pedal and bent axle swung downward, meanwhile, connect On the crank of swung downward, steel wire rope one end also moves down, thus drives the other end of steel wire rope upwards to transport by reverse wheel Dynamic, owing to the other end of steel wire rope is connected with other crank, so another one pedal and bent axle will be swung up.Complete Two pedals in left and right and crank alternate swing.Here, in the case of reverse wheel position and swing stop are certain, steel The length of cord determines the size of foot-operated amplitude of fluctuation.Need the angle phase adjusting foot-operated amplitude of fluctuation with ratchet adjacent slot Corresponding.If foot-operated amplitude of fluctuation is less than the angle of ratchet adjacent slot, then cannot realize the purpose of ratchet Continuous Drive ratchet.If but Foot-operated dynamic amplitude is too many more than the angle of ratchet adjacent slot, then will result in the offside ratchet slot of ratchet too many, will produce bigger driving Dynamic impact, the also the most foot-operated amplitude of fluctuation of waste.Therefore, the length of steel wire rope to be adjusted makes foot-operated amplitude of fluctuation slightly larger than ratchet The angle of adjacent slot be advisable.And the swung downward stop of pedal and crank can weld by the correct position on the vehicle frame of bicycle Connect a block to limit the descending swing position of crank.

Accompanying drawing explanation

Fig. 1 swings without dead point drive mechanism front view；

Fig. 2 swings without dead point drive mechanism side view；

Fig. 3 five groove ratchet structure figure

Wherein: 1 reverse wheel；2 steel wire ropes；3 right pedals；4 right cranks；5 right ratchets；6 bicycle middle shafts； 7 left ratchets；8 left cranks；9 left foots are pedaled；10 left pawls；11 blocks；(note: right ratchet is arranged symmetrically with left pawl, Figure draws the most entirely)

Detailed description of the invention

The utility model discloses the drive mechanism of the riding bicycle that a kind of swing type drives without dead point.It swings without dead Point drive front view principle is as it is shown in figure 1, it swings without dead point drive mechanism side view principle as in figure 2 it is shown, its five groove Ratchet structure figure is as shown in Figure 3.Drive mechanism mainly includes: reverse wheel (1), steel wire rope (2), right pedal (3), right crank (4), right ratchet (5), bicycle middle shaft (6), left ratchet (7), left crank (8), left foot pedal (9), left pawl (10), right ratchet (11) formed with block (12) etc..

Drive mechanism basic structure of the present utility model is as follows: bicycle middle shaft (6) is the axis basis at former bicycle Upper repacking, main repacking is to make former bicycle middle shaft slightly lengthen, and inside the left and right crank of bicycle middle shaft (6) respectively Fixedly mount left ratchet (7) and right ratchet (5), simultaneously by between former bicycle middle shaft (6) and left crank (8) and right crank (4) Make pendulum rotating into be dynamically connected pair.Left foot pedals the installation of (9) and right pedal (3) and left crank (8) and right crank (4) and former bicycle Just the same.Hand over to prop up with left pawl (10) and right ratchet (11) respectively due to left crank (8) and right crank (4) and be connected, therefore exist Also left and right ratchet (7) will be driven to rotate together with (5) by left and right ratchet (10) and (11) while the crank single direction rotation of left and right. The lower dead center of the most left crank (8) and right crank (4) swung downward is adjusted by block (12), and left crank (8) and right song The distance that the top dead centre that handle (4) is swung up is pulled up by steel wire rope (2) limits, it is not necessary to block limits.It addition, reverse wheel (1) being arranged on before the big frame of former bicycle on tilted supporter, reverse wheel (1) walked around by steel wire rope (2), and two steel wire ends are solid respectively Be scheduled on left crank (8) and the medium position part of right crank (4), by adjust steel wire rope length regulate left crank (8) and The full swing angle value of right crank (4).The maximum angle value of left crank (8) and right crank (4) is omited than the angle value of ratchet slot Big, such as four groove ratchet structures (Fig. 2) can be adjusted to about 90+2 degree, and five groove ratchet structures (Fig. 3) can be adjusted to About 72+2 degree, mainly ensure left ratchet (7) and left pawl (10) and right ratchet (5) and right spine by the rocking test of crank Pawl (11) can normally replace engagement and be as the criterion.Block (12) can be made boss by the overcoat of bicycle middle shaft (6) and realize, Block can also be welded and fixed in bicycle frame to realize.

Swing type is without the ride of dead point driving bicycle: the riding bicycle that this swing type drives without dead point, on Car process is identical with former bicycle, and first general left foot is stepped on and pedaled on (9) at left foot, and left foot is pedaled (9) and driven left crank (8) to make the inverse time Pin rotary motion (see Fig. 2), rotating counterclockwise of left crank (8) drives left ratchet (7) to make counterclockwise further through left pawl (10) Rotate, owing to left and right ratchet (7) and (5) are connected for fixing with bicycle middle shaft (6), therefore will drive and bicycle middle shaft simultaneously The fixing big chain crop rotation connected rotates counterclockwise, drives bicycle rear motion eventually through chain and minor sprocket.When left crank (8) while making to rotate counterclockwise, owing to the commutation effect of steel wire rope (2) will drive right crank (4) to turn clockwise, simultaneously Right pedal (3) is also swung up.When left crank (8) encounter block (12) limited time, right crus of diaphragm starts to step right pedal (3), this Sample left and right foot alternately steps left foot and pedals (9) and right pedal (3) just completes the effect of driven left and right ratchet, again by left and right ratchet Driven complete the continuous rotation of bicycle middle shaft move ahead so that bicycle can rotate continuously.

The swing type of this utility model design, without dead point drive mechanism, is to improve to form on the basis of former bicycle. This bicycle can make left and right foot the most alternately step pedal, and by left and right crank, left and right ratchet and a left side The intermittently-driving effect of right ratchet drives the continuous rotation of bicycle middle shaft.Owing to wobble drive does not has dead point than rotating driving, And its average driving arm of force greatly about twice, therefore can make the driving force of bicycle increase, will have stronger climbing Slope ability.This swing type can apply to two-wheel riding bicycle and three-wheel riding bicycle without dead point driver, and Other needs manually driven dynamical system.

Claims (6)

1. a drive mechanism for the riding bicycle that swing type drives without dead point, mainly includes: reverse wheel (1), steel wire rope (2), right pedal (3), right crank (4), right ratchet (5), bicycle middle shaft (6), left ratchet (7), left crank (8), left foot are pedaled (9), left pawl (10) right ratchet (11) and block (12) etc., when manpower footing alternatively left foot respectively pedals (9) and right pedal (3) Time, make oscillating motion, left crank (8) and right crank (4) the most respectively by a left side by driving left crank (8) and right crank (4) respectively Ratchet (10) and right ratchet (11) alternately drive left ratchet (7) and right ratchet (5) to rotate the angle of a ratchet slot, left spine respectively Wheel (7) and right ratchet (5) are all fixing with bicycle middle shaft (6) to be connected, and therefore bicycle middle shaft (6) will be on left ratchet (7) and the right side Make under the driven of ratchet (5) to rotate continuously, thus complete the forward movement of bicycle.

2. the drive mechanism of the riding bicycle driven without dead point according to a kind of swing type described in right 1, is characterized in that left song Handle (8) and right crank (4) are to be that pendulum rotating is dynamically connected pair respectively with bicycle middle shaft (6).

The drive mechanism of the riding bicycle that a kind of swing type the most according to claim 1 drives without dead point, is characterized in that Left crank (8) and right crank (4) be respectively by swing mode by left pawl (10) and right ratchet (11) and left ratchet (7) and Right ratchet (5) alternate intermittent drives bicycle middle shaft (6), thus complete transmission after bicycle middle shaft (6) rotate fortune continuously Move.

The drive mechanism of the riding bicycle that a kind of swing type the most according to claim 1 drives without dead point, is characterized in that The swung downward lower dead center of left crank (8) and right crank (4) is carried out limiting location by block (12).

The drive mechanism of the riding bicycle that a kind of swing type the most according to claim 1 drives without dead point, is characterized in that When a pedal moves downward, by the steel wire rope (2) of reverse wheel (1), drive another one pedal is moved upward.

The drive mechanism of the riding bicycle that a kind of swing type the most according to claim 1 drives without dead point, is characterized in that The effective angle of obliquity degree of left crank (8) and right crank (4) is 72 degree or 90 degree, adjustable by the groove number of ratchet.