CN2737655Y

CN2737655Y - Electric booster bicycle

Info

Publication number: CN2737655Y
Application number: CN 200420071216
Authority: CN
Inventors: 谭乾棠
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-06
Filing date: 2004-07-06
Publication date: 2005-11-02
Anticipated expiration: 2014-07-06

Abstract

The utility model relates to an electric booster bicycle which comprises an accumulator, a motor, a bicycle frame, a unidirectional fly wheel and wheel shafts, wheel rings and tyres on a front wheel and a back wheel, wherein wheel spokes are connected between the wheel shaft and the wheel ring, the wheel spoke on the back wheel is fixedly connected with a driving tooth ring which is concentric with the wheel ring of the back wheel, the motor drives an end roller cone through a chain belt transmission mechanism and drives an outer gear to be engaged with the driving tooth ring through the unidirectional driven small fly wheel, the end roller cone, the small fly wheel and the outer gear are all movably matched on the same short shaft, and the end roller cone or the outer gear and the small fly wheel are concentrically fixedly connected into integration. The utility model has the advantages of large starting traction force of the motor, good accelerating performance and grade climbing performance, convenient switching of human power and electric operation, higher electric appliance installation position, little potentiality of penetration influence by water on road surfaces and better security and stability, can generate power by the inertia energy of bicycles, and has good combination performance of shock resistance, tyre explosion prevention, etc.

Description

Electric assisted bicycle

[technical field]

The utility model relates to a kind of foot-operated aiding bicycle, and more particularly, the utility model relates to a kind of electrodynamic type assisted pedal stroke bicycle.

[background technology]

On common manpower bicycle, increase the dynamo-electric power-assist of cover system, can increase power, the speed of simple manpower bicycle, be suitable for how different crowd's needs.Wherein adopt the morpet of motor-assisted system usually simple, convenient, flexibly, of low pollution, stop freedom, thereby extensively adopted by the family of China and individual institute.Improvement along with people's life, the main flow walking-replacing tool and the machinery of riding instead of walk constantly upgrade: from bicycle to bus, from bus to motor bike, again from motor bike to sedan ... this development tendency is just in the ascendant, but society, nature, economic dispatch problems such as the energy shortage of companion's thing followed, environmental pollution, traffic congestion are becoming the powerful resistance of this development tendency of restriction also.Even in the All Around The World scope, bicycle is also ubiquitous because of its above-mentioned advantage: in developed country, the population that increases adopts bicycle to carry out short-range travelling, take exercises day by day, in developing country such as South East Asia or less developed country such as Africa, bicycle still has the market of accelerated development and popular.Can predict that in the decades in future, no matter in the city or the rural area of China, most populations also will be used as the most basic walking-replacing tool to bicycle, and electric assisted bicycle will be played the part of more and more important part therein.

Existing electric assisted bicycle is numerous in variety, its improvement technology also continues to bring out, improvement technology wherein, it is the Electric booster that the Chinese patent file of 88210261.U discloses a kind of bicycle that application number is arranged, and comprises DC machine, power-transfer clutch, storage battery, charger.And being magnetic shoe by four symmetries, the stator of motor constituted; Has friction wheel on the axle of motor; Power-transfer clutch comprises movable platen frame, base plate, decides contact, be fixed with support on the moving contact, movable grillage. have stage clip between the support on support and the base plate, the centre of base plate has adjustable column, move post by the switch that has spring to fix on the moving frame, have on the moving frame with the moving post of switch on moving contact decide head accordingly, moving frame can be respectively around the moving axis on the movable grillage, dead axle rotation on the base plate; But have the through hole of fixed electrical machinery on the movable grillage, an end of cable brake steel wire passes support and is fixed on the support.It is said that the major advantage of this device is: owing to replace chain-driving with friction wheel, thereby noise is little, and is cheap and just give maintenance; The stator of motor is to adopt four magnetic shoes, thereby has improved the power of motor, and the profile of motor and storage battery is correspondingly reduced; By give project organization rationally and car body can not be with charger, so compact conformation, outward appearance U.S. is easy to use, can be used on the bicycle such as bicycle-three-wheel vehicle.But obviously, adopt friction wheel to carry out power-assist with the mode that trailing wheel (or other drive wheels) outer rim rubs mutually, the outer intermarginal mutual friction mutually of drive wheel and friction wheel the power that can transmit very limited, be exposed to and be very easy to gather spot, greasy etc. influence on the outer wheel rim surface, cause this power transmission efficiency to be subjected to very big influence.

Similar techniques is improved and to be seen application number is 98248672.3 Chinese patent file, it discloses a kind of bicycle electric device that improves structure, the power of the electro-motor of the transmission device in its device is through driving chain wheel, realizes that by the outer sprocket wheel of short chain drive bicycle main shaft the inner sprocket that is positioned at outer sprocket wheel inboard side by side then drives the trailing wheel of bicycle by reel chain.In addition, at the other then lock of the housing of electro-motor one group of straining pulley is housed, the elasticity of the tight short chain that is used for pulling automatically is in case the anti-avulsion chain.This device still adopts traditional sprocket wheel, chain to drive trailing wheel, thereby for whole transmission device compactness, lightweight, the installation site of motor can only be installed in traditional vehicle frame near the shaft position nearby, there is the low excessively shortcoming in installation site, be subjected to the splash infiltration of water droplet of surface gathered water, wheel easily, cause fault, safety, less stable.And share same driving system with the foot-operated sprocket wheel of traditional manpower, chain, and by little with effective torque, available power is little, can cause the electric motor starting tractive force little, and acceleration capability is lower, and grade climbing performance is not good; During on-electric, manpower drives difficulty, and resistance is big; A series of problems such as structural drag is big, and energy consumption is big, and endurance is low, thus caused its marketing to be restricted.

Similarly also to see application number be 01208155.8 Chinese patent file in improvement, it discloses a kind of Vidacare corp of bicycle, this device is similar to traditional drive mechanism drive trailing wheel owing to still adopting, thereby still exist the motor installation site low excessively, be subjected to the splash infiltration of water droplet of surface gathered water, wheel easily, cause fault, safety, less stable, a series of problems such as effective torque is little, available power is little, acceleration capability is lower, grade climbing performance is not good, manpower drives difficulty during on-electric, structural drag is big, energy consumption is big, endurance is low.

Similarly also to see application number be 02244329.0 Chinese patent file in improvement, it discloses a kind of electronic accessory drives device of bicycle, one axostylus axostyle, actuation gear, interlock body are installed in the housing of this driver, and actuation gear other with electro-motor the transmission gear that conducts via active umbrella shape bar tooth, driven umbrella shape bar tooth be meshed, envelope by a cap again, its axostylus axostyle two ends are protruding to be exposed to outside the driver, with assembling chain drum, crank and pedal.The continuous loop tooth of actuation gear periphery then with electro-motor be meshed via the transmission gear of active umbrella shape bar tooth, driven umbrella shape bar tooth conduction.It is said that this device can be in the middle of existing car body framework, most convenient, install and tool economy easily, also can have electric boosted effect.But this vehicle motor device has the common problem of said apparatus.

It is 99208058.4 Chinese patent file that this type of improvement sees application number, it discloses the concentric two-axle gear of a kind of Electrical Bicycle, to distinguish electronic and foot-operated purpose simply, to have dual auxiliary function, that this bicycle has is electronic, foot-operated variable-ratio mechanism, be made as hollow by an outer shaft, one end and large fluted disc close admittedly, inner with bearing and day axle every establishing, and between sky axle and outer shaft, be provided with free-wheel clutch in addition.This device has shortcoming similar with said apparatus and problem.

[summary of the invention]

Above-mentioned shortcoming at prior art, the technical purpose that the utility model will reach is will provide a kind of startup tractive force of motor big, quicken and climbing property is good, manpower/electronic easy switching and electrical equipment installation site are higher, be not vulnerable to the wet infiltration influence of road surface water, and safety, stability is electric assisted bicycle preferably.

Another subsidiary technical purpose that the utility model will reach is that a kind of electric assisted bicycle that comprises good combination properties such as can utilizing the bicycle inertia energy generates electricity, antidetonation, runflat will be provided.

For this reason, the technical solution of the utility model is a kind of electric assisted bicycle, this electric assisted bicycle comprises vehicle frame, seat, steering handle, braking mechanism, step on handle and continuous stretcher, steerable front wheel, drive and use trailing wheel, unidirectional flywheel, wheel shaft on front-wheel and the trailing wheel, wheel rim, tire, between described wheel shaft and wheel rim, be connected with spoke, also be provided with storage battery and electrical motor on the described electric assisted bicycle, and be fixed with the driving gear ring concentric on the spoke of trailing wheel with the wheel rim of described trailing wheel, described electrical motor drives terminal gear wheel by the chain tape handler and is meshed with described driving gear ring through the small flywheel drive external gear of unidirectional drive, described terminal gear wheel, small flywheel, the equal running-fit of external gear is on same minor axis, and being connected with one heart between described terminal gear wheel or external gear and the small flywheel becomes one.For the less light and purposes such as expendable weight and transmission complexity of trying one's best with motor and servodrive mechanics work, passing electric assisted bicycle is always continued to use traditional sprocket wheel, chain system, and this causes electrical motor and electrical equipment thereof must be installed near the lower middle shaft position of bicycle, and this can cause motor and security appliance stability not good, the transmission switching efficiency is bad, and acceleration capability is relatively poor.Above-mentioned shortcoming at electric assisted bicycle of the present utility model, the utility model is at first started with from chain, the sprocket drive system of reform traditional bicycle, adopt with the wheel rim of trailing wheel, spoke on the concentric driving gear ring that the is connected stressed link of rotating as wheel rim, drive terminal gear wheel with electrical motor by the chain tape handler again and drive through the small flywheel of unidirectional drive again that mode that external gear is meshed with the driving gear ring drives wheel rim and even whole wheel rotates forward.Such structure, one because driving gear ring can accomplish than major diameter, the wheel rim that adopts the big arm of force helps simplifying people, machine driving, transmission device like this as electric boosted stressed link; The motorized motions arm of force is significantly increased, be equivalent to increase a deceleration boosting mechanism, therefore can reduce greatly for driving required staring torque, starting tractive effort is big especially, just can reach ultralow amount energy consumption behind the cruising, even adopt common even more low power motor also can easily start or rotating-wheel, improved the startup and the grade climbing performance of vehicle; And the wheel rim that adopts the big arm of force is as electric boosted stressed link, also can make the motor installation site bring up to the top of vehicle frame, thereby improved the safety performance of the water leakage of electrode and electrical equipment, add and adopted terminal gear wheel, small flywheel, the compact form of the equal running-fit of external gear on same minor axis, make the utility model bicycle easy switching aspect manpower/electronic two.Also be convenient to electrical motor and storage battery are attached on the extreme higher position of vehicle frame from traditional vehicle frame extreme lower position, increase waterproof, cross country power and safety performance, the service life of motor drive mechanism.

For further realizing above-mentioned principal advantages of the present utility model, the utility model is taked following concrete innovative approach: drive gear ring and be the internally toothed annulus on the inner ring surface that is located at described trailing wheel wheel rim, perhaps described driving gear ring is the external toothing that is fixed on the wheel spoke of described trailing wheel; Storage battery and electrical motor are located at the top of described vehicle frame.Described chain tape handler is sprocket wheel, link chain mechanism, and described terminal gear wheel is a chain sprocket structure; Perhaps, described chain tape handler is toothed belt, gear mechanism, and described terminal gear wheel is a gear structure, according to circumstances can select one of them and uses it.

For realizing another subsidiary technical purpose of the present utility model, the utility model increases by a cover elasticity clutch again on common single-stage unidirectional drive flywheel mechanism basis one-way drive mechanism is promptly: described terminal sprocket wheel or described external gear are axially fixed on the described minor axis, but wherein another then relative resilient be assemblied in slidably on the described minor axis, but between described terminal sprocket wheel and described external gear, also be provided with a cover elasticity clutch single direction ratchet mechanism.But this elasticity clutch single direction ratchet mechanism is specific as follows: being connected with one heart between described terminal gear wheel and the small flywheel becomes one, and is connected with axle sleeve on described external gear one end; Described terminal gear wheel or described external gear are axially fixed on the described minor axis, and wherein another then can be assemblied on the described minor axis axially slidably; Described small flywheel comprises two cover single direction ratchet mechanisms, and wherein a cover constant-mesh single direction ratchet mechanism is provided in a side of between the axle sleeve outer ring surface of the inner ring surface of described small flywheel wheel rim and described external gear; But between the end face that another set of clutch single direction ratchet mechanism is provided in a side of the terminal gear wheel in the described small flywheel wheel rim and the corresponding end face of the axle sleeve of described external gear, push away spring and corresponding thrust reverser mechanism and be provided with between the corresponding end face of the end face of the interior terminal gear wheel of described small flywheel wheel rim and the axle sleeve of described external gear; But described electrical motor is a generator-motor; Described minor axis is assemblied on the described vehicle frame.So just be integrated into the small flywheel power-transfer clutch.When needing, actuating motor just can drive small flywheel by chain and drive bicycle; When trailing wheel need brake when maybe needing to utilize the trailing wheel generating that inertia rotates, as long as driving thrust reverser mechanism slippages external gear and small flywheel wheel rim to hold together, but the trailing wheel of inertia rotation by drive gear ring and just can drive that external gear rotates with the small flywheel wheel rim and by chain with transfer of energy to generator motor, electric energy directly utilized or store in the storage battery.Electricity of accumulator can drive the direct motor drive bicycle again when needed.

As improved specific implementation of said structure and further improvement, thrust reverser mechanism of the present utility model comprises that activity is engaged in the anti-push shaft cover on the described minor axis, and described thrust reverser mechanism is connected with described braking mechanism.Between described electrical motor and storage battery, also be connected with charger to battery charge.When the needs brake deceleration, but press that braking mechanism can drive that thrust reverser mechanism closes up the clutch single direction ratchet mechanism and by exclusive chain tape handler drive that but generator motor generates electricity and store electrical energy in storage battery.

For can electric shift, sprocket wheel of the present utility model be severally to have different-diameter and the number of teeth but flat shape is fixed in the speed-changing chain group on the same axle sleeve side by side.

For realizing other subsidiary technical purpose of the present utility model, spider and Vee formation frame before vehicle frame of the present utility model comprises, before described spider comprise preceding pipe, go up pipe, pipe, rear profile tube down, described Vee formation frame comprises upright fork, chain stay, is articulated and connected by connecting pin between the front end of the rear end of the lower end of the rear profile tube of described preceding spider and/or following pipe and the chain stay of Vee formation frame; On described between pipe rear end and the rear profile tube for elasticity is connected, also be connected between on described upright fork top and the rear profile tube for elasticity.Like this, under the brake situation, front-wheel is because still preshoot and spacing out with trailing wheel of inertia reduces center of gravity, and easier controlling forms a kind of safer, emergency rating that elasticity is powerful, thereby improved the operation simplification, strengthened cross-country traveling ability, shock resistance.In addition, the cross section of the utility model tire comprises wheel rim, PU foaming tire and inflation cover tire from inside to outside successively.Like this in case blow out, unlikelyly cause excessive out of controlly, greatly increased safety performance.Be connected between the steering handle of the utility model embodiment (tap) and front wheel carrier make flute profile (rule or special-shaped) make steering handle can before and after adjust up and down, broad view, drive comfortable;

For further improving the Combination property of mentioning in the subsidiary technical purpose of the utility model, improvement of the present utility model is prolonged and foot drive device, promptly be equipped with one and step on handle and stretcher and fan-shaped active meshing wheel in the left and right sides of vehicle frame, the outer ring engaging tooth of the unidirectional flywheel on hind axle the right and left is meshed with the fan-shaped active meshing wheel of homonymy respectively, and stretcher is fixed on the described front end of stepping on handle, described fan-shaped active meshing wheel is fixed on the rear end of stepping on handle, on the handle body between the described two ends of stepping on handle, have pin-and-hole, be connected with the handle pin on vehicle frame, the described handle of stepping on is hinged on the vehicle frame by this pin-and-hole and handle pin; Initiatively meshing wheel is internally toothed annulus structure or inner arc chain segment structure, and described unidirectional flywheel outer ring is gear or sprocket wheel, steps on the end face or outer ring face that handle is connected this fan-shaped active meshing wheel; Stretcher is provided with the limit hook on one side.Of the present utility model back and forth scrunching in the driver train, internally toothed annulus with its inner ring but not the outer ring be meshed with external gear, can make installation dimension, length structure and the mechanical structure of stepping on handle more reasonable like this, and simplify for following transmission device and to lay the foundation.With internally toothed annulus with its inner ring but not the outer ring is meshed with external gear all fours, inner arc chain segment structure is that one section traditional chain segmental arc is welded on the fan-shaped framed structure, and with the inner ring of chain segmental arc but not the outer ring be meshed with sprocket wheel.The actuating device that scrunches of the present utility model had both fully phased out traditional circumference pedal-type chain wheel sprocket wheel, chain drive, transmission device, foot-operated handle is significantly extended, pin-and-hole and the handle pin of supporting being stepped on handle are opened between stretcher, the quadrant gear, utilize stretcher and with the mutual balance of weight of unidirectional flywheel ingear quadrant gear (this end of arc tooth is slightly heavy), only need just can reciprocally carry in order to lower whorl to scrunch with the stretcher that instep will have been stepped on easily apace by stretcher limit hook on one side.Therefore, device of the present utility model compared with traditional circumference pedal-type driver train have simple and practical, mechanism is light and handy, laborsaving, conspicuous advantage such as transmission is efficient, and the utility model can allow seat suitably adjust to car is anterior, make and stop over comfortablely, ride easily.

Be further to strengthen above-mentioned principal advantages of the present utility model, the utility model is taked following concrete innovative approach: the position of pin-and-hole and handle pin is in the described center of gravity of the rigid body that handle, stretcher and quadrant gear form or the front slightly stepped on; The position of described handle pin is in the rear lower of described vehicle frame near rear axis.Foot-operated like this handle just can be done longly especially, and it is laborsaving especially to ride, more help stretcher reciprocal leggiero about, more help the adjustment of seat on vehicle frame.

Trailing wheel central authorities directly are connected with the driving disk of unidirectional drive, this driving disk is connected with axle sleeve on the left and right two ends, be provided with antifriction-bearing box between described axle sleeve and the described hind axle, on the end face at the left and right two ends of described driving disk or be respectively equipped with unidirectional ratchet-gear wheel on the axle sleeve; The inner ring of two described unidirectional flywheels is movable respectively to be engaged on the axle sleeve of homonymy, and described unidirectional flywheel is provided with unidirectional ratchet and is meshed with the described unidirectional ratchet-gear wheel of this side respectively.Create like this and integrated automatic flywheel clutch, advance and retreat are conversion automatically, when particularly moveing backward, and not foot-operated can the rotation.

In a word, structural development of the present utility model has following advantage:

1) taking motorized motions and foot-operated being driven apart is two driving systems independently mutually, thereby motor is in office, and when Hou Douneng drives flywheel drives trailing wheel.

2) especially big moment drives.Because moving tooth directly is made in (medial and lateral) on the wheel rim, also promptly the arm of force is significantly increased, the arm of force reaches 2～10 times (relevant with the wheel rim size) than existing vehicle commander.Correspondingly, power of motor is constant, and tractive force will increase by 2～10 times.

3) ultralow amount energy consumption.Because drive torque is big, moving tooth radius is big, and the driving gear footpath is little, and various resistances are minimum, just can reach ultralow amount energy consumption (minimum limit of energy Danone loss) behind the cruising.

4) high carrying capacity, motor safety height.Because motor preposition on after poppet, to be attached on the extreme higher position of vehicle frame from traditional vehicle frame extreme lower position, is increased waterproof, cross country power and safety performance, the service life of motor drive mechanism with electrical motor.

5) laborsaving, manpower drives easily.Than drive existing bicycle can laborsavingly reach four times or more than! Because the big moment of the long arm of force drives and driving cog is integrated into the full automaticity flywheel clutch, the motor that just links whenever necessary is to reach the effect that reduces or increase resistance.So, do not need to drive motor rotation under many circumstances.As: when 1. battery does not have electricity; When 2. manpower drives; During 3. down little slope; 4. do its time spent etc. in addition for saves energy.When particularly manpower drives, eliminate the electromagnetic induction power that is produced when being used power of drive motor and motor rotation fully.So only this just can significantly reduce various wastes of power, than drive existing bicycle labor saving reach four times or more than.

6) the speed speed is adjustable.Except that the controllable motor speed governing, also can externally regulate and control speed and drive torque.Can be directly carry out outside speed governing by chain and driving cog group and adjust drive torque (same, but more simple and convenient easy-to-use) with existing variable speed bicycle principle in set of drive teeth (on motor drive shaft).Tractive force by the utility model device output is than the big several times of existing car, and the lifting that is expected to have now the battery-driven car tractive performance meets or exceeds motor bike.

7) brake energy storage is made the best use of everything.During brake, at first cut off the power supply, make the flywheel clutch engagement drive motor then, make motor become electrical generator, charge the battery through constant-current source circuit, make kinetic energy be transformed into electric energy, realize the reasonable recycle of energy, prolong the flying power of battery, realize making the best use of everything, a machine (motor) to be used.

8) high security, low use cost.During brake, at first outage makes flywheel clutch engagement (drive motor) electrification energy storage then, increases resistance, and vehicle is effectively slowed down, and reduces the loss of brake facing, reduces use cost, improves braking effect simultaneously, significantly improves safety.

9) multipurpose motor can be used to the generating illumination, makes the emergency communication power supply, or the like.

Electric booster system of the present utility model can be used for rotation and scrunch driven bicycle, also can be used for reciprocal pedal-type bicycle.Be specially adapted to bicycle, electric assisted bicycle (battery-driven car) contains two-wheeled three-wheel or multiwheel vehicle, the subway electric car, and train mixes power vehicle, electric car of public traffic etc.

Below, with accompanying drawing technical solution of the present utility model is described further in conjunction with specific embodiments.

[description of drawings]

Fig. 1 is the structural representation of Moped Scooter car load embodiment of the present utility model.

Fig. 2 is the schematic perspective view of the major part among Fig. 1.

Fig. 3 is the structural representation that back and forth scrunches actuating device of the utility model Moped Scooter.

Fig. 4 is the cross-sectional schematic of electronic unidirectional drive device in the electric boosted actuating device of the utility model.

Fig. 5 is the three-dimensional exploded view of the electronic unidirectional drive device among Fig. 4.

Fig. 6 is for back and forth scrunching the cross-sectional schematic that scrunches the unidirectional drive device in the actuating device.

Fig. 7 is the three-dimensional exploded view that scrunches the unidirectional drive device among Fig. 6.

Fig. 8 is the cross-sectional schematic of the utility model trouble-proof tire structure.

[specific embodiment]

Embodiment 1

As Fig. 1,2,3, be depicted as a kind of electric assisted bicycle, this electric assisted bicycle comprises vehicle frame 100, spider 110 and Vee formation frame 120 before this vehicle frame 100 comprises, before spider 110 comprise before pipe 111, on manage 112, manage 113 down, rear profile tube 114, Vee formation frame 120 comprises upright fork 121, chain stay 122, is articulated and connected by connecting pin 130 between the front end of the chain stay 122 of the rear end of pipe 113 and Vee formation frame 120 under the lower end of the rear profile tube 114 of preceding spider 110 reaches; Between last pipe 112 rear ends and rear profile tube 114, be connected, also be connected between upright fork 121 tops and rear profile tube 114 upper ends for elastic hinge 131 for elastic hinge 131.

The left and right sides of vehicle frame 100 is respectively equipped with and back and forth scrunches actuating device 500 (only showing one), on the handle body between the two ends of stepping on handle 540, have pin-and-hole, on vehicle frame chain stay 122 rear portions, be provided with handle pin 544, step on handle 540 and be hinged on the vehicle frame 100 by this pin-and-hole and handle pin 544;

Be equiped with electric boosted actuating device 600 on the vehicle frame 100, this device 600 comprises the driving gear ring of establishing on the spoke of trailing wheel 510 610 concentric with this rear rim 430, drives gear ring 610 and is the internally toothed annulus on the inner ring surface that is located at rear rim 430; But also be provided with storage battery 620 and generator-motor 630 on this stepping type morpet, between electrical motor 630 and storage battery 620, also be connected with to storage battery 620 electrically-charged chargers (not quite clear showing); This electrical motor 630 is assembled on the motor mounting frame 631 of vehicle frame 100 and by chain 640, intermediate chain wheel 650 and drives terminal sprocket wheel 660 and be meshed; Be connected with one heart between terminal sprocket wheel 660 and the small flywheel 670 and become one also and external gear 680 equal activities are engaged on the same minor axis 690 (referring to Fig. 5), minor axis 690 is fixed on the vehicle frame rear portion, and terminal sprocket wheel 660 is meshed with driving gear ring 610 through the small flywheel 670 drive external gears 680 of unidirectional drive; Terminal sprocket wheel 660 has different-diameter and the number of teeth but flat shape is fixed in the speed-changing chain group on the same axle sleeve side by side for several.

Electrical motor 630 is assembled on the motor mounting frame 631 of vehicle frame 100 and occupy vehicle frame 100 tops, and storage battery (this figure is not quite clear to be shown) also is assembled in vehicle frame 100 tops; The minor axis 690 that terminal sprocket wheel 660, small flywheel 670 and external gear 680 are fitted thereon jointly is assembled on the lateral plate 691 at rear portion of Vee formation frame 120.

Drive with trailing wheel 510 and tire 400 and be assemblied in promptly upright fork 121 rear ends, rear end of Vee formation frame 120 and the intersection of chain stay 122 rear ends by hind axle 520.

Seat 200 (not quite clear showing) is installed in the upper end of rear profile tube 114, the upper end of pipe 111 before steering handle 300 (not quite clear showing) is installed in; Vehicle frame 100 also comprises shelf 140.

Embodiment 2

As Fig. 4,5, be depicted as the electronic unidirectional drive device of two-stage series connection in the electric boosted actuating device 600 among the utility model embodiment, the coaxial mutually terminal sprocket wheel 660 that becomes one that is connected is engaged on the same minor axis 690 by antifriction-bearing box 675 and antifriction-bearing box 676 activities respectively with small flywheel 670 and external gear 680, wherein 690 of external gear 680 and minor axises are connected for axially fastening, and are connected with axle sleeve 683 on external gear 680 1 ends; 690 of terminal sprocket wheel 660 and small flywheel 670 and minor axises are for being in axial sliding connection; Small flywheel 670 relevant structures comprise two cover single direction ratchet mechanisms, and wherein a cover constant-mesh single direction ratchet mechanism is to be assembled by the elasticity ratchet 681 on axle sleeve 683 anchor rings of ratchet ring on small flywheel 670 inner ring surfaces 671 and external gear 680; But another set of clutch single direction ratchet mechanism 672 is by being assembled between the ratchet ring 682 on the corresponding end face of the ratchet ring 672 on terminal sprocket wheel 660 end faces that are located in small flywheel 670 wheel rims and the axle sleeve 683 of external gear 680, and be provided with between the end face of the terminal sprocket wheel 660 in the wheel rim 670 and the corresponding end face of the axle sleeve 683 of external gear 680 and push away spring 673 and corresponding thrust reverser mechanism 674, the axle sleeve structure of this thrust reverser mechanism 674 for linking with braking mechanism (not quite clear showing).

Embodiment 3

As Fig. 6,7, what be depicted as the two-stage series connection that back and forth scrunches actuating device 500 scrunches the unidirectional drive device, it comprises the directly driven roller 521 of affixed unidirectional drive of trailing wheel 510 central authorities, be connected with axle sleeve 5210 on these driven roller 521 left and right two ends, be provided with antifriction-bearing box 522 between axle sleeve 5210 and the hind axle 520, driven roller 521 1 sides are connected with brake disc 524; Be respectively equipped with unidirectional ratchet-gear wheel 5211 on the end face at driven roller 521 left and right two ends; A left side, right two unidirectional flywheels 543 comprise that traditional one-way ratchet mechanism interfaced comprises the elastic pawl 5431 on ratchet ring 5432 that is located on unidirectional flywheel 543 outer ring surfaces and the inner ring 5430 that is located at unidirectional flywheel 543, inner ring 5430 on the movable respectively axle sleeve 5210 that is engaged in homonymy, in addition, be equipped with the unidirectional ratchet that is meshed with the unidirectional ratchet-gear wheel 5211 of this side on the unidirectional flywheel 543 in both sides, this unidirectional ratchet comprises the ratchet dish that is arranged on unidirectional flywheel 543 end faces 5434 and the axial spring coil 5433 of pushing tow this unidirectional flywheel 543 in regular turn, and spring coil 5433 and unidirectional flywheel 543 are coaxial and be limited at thrust button 523 inboards that are fastenedly connected with hind axle 520.

Also be provided with single direction ratchet mechanism and ratchet 5230 thereof and antifriction-bearing box 5231 between thrust button 523 and the hind axle 520; Cooperate by screw thread guide groove 5231 is movable mutually between thrust button 523 and the unidirectional flywheel 543.

Wherein, failing the clear tradition that shows among Fig. 7, to be located at the ratchet ring 5432 and the elastic pawl 5431 of the one-way ratchet mechanism interfaced on the ring in the unidirectional flywheel 543 consistent with ratchet ring 671 and elasticity ratchet 681 structures shown in Fig. 5, can be referring to Fig. 5.

Embodiment 4

As Fig. 8, be depicted as the structure of trouble-proof tire 400 cross-sectional planes, the section drawing of tire 400 is from comprising inflation cover tire 410, PU foaming tire 420 and wheel rim 430 outside to inside successively, this wheel rim 430 is the rigidity circle bodies that are positioned at the outermost of trailing wheel 510 and front-wheel.

Claims

1, a kind of electric assisted bicycle, this electric assisted bicycle comprises vehicle frame (100), seat (200), steering handle (300), braking mechanism, the stretcher (541) of stepping on handle (540) and linking to each other, steerable front wheel, drive with trailing wheel (510), unidirectional flywheel (543), wheel shaft on front-wheel and the trailing wheel (520), wheel rim (430), tire (400), between described wheel shaft (520) and wheel rim (430), be connected with spoke, also be provided with storage battery (620) and electrical motor (630) on the described electric assisted bicycle, it is characterized in that: be fixed with the driving gear ring (610) concentric on the spoke of described trailing wheel (510) with the wheel rim (430) of described trailing wheel (510), described electrical motor (630) drives terminal gear wheel (660) by chain tape handler (640) and is meshed with described driving gear ring (610) through small flywheel (670) the drive external gear (680) of unidirectional drive, described terminal gear wheel (660), small flywheel (670), all running-fit is on same minor axis (690) for external gear (680), and being connected with one heart between described terminal gear wheel (660) or external gear (680) and the small flywheel (670) becomes one.

2, electric assisted bicycle as claimed in claim 1, it is characterized in that: described driving gear ring (610) is the internally toothed annulus on the inner ring surface that is located at described trailing wheel (510) wheel rim (430), and perhaps described driving gear ring (610) is the external toothing on the wheel spoke that is fixed on described trailing wheel (510); Described storage battery (620) and electrical motor (630) are located at the top of described vehicle frame (100).

3, electric assisted bicycle as claimed in claim 1 or 2 is characterized in that: described chain tape handler (640) is sprocket wheel, link chain mechanism, and described terminal gear wheel (660) is a chain sprocket structure; Perhaps, described chain tape handler (640) is toothed belt, gear mechanism, and described terminal gear wheel (660) is a gear structure.

4, electric assisted bicycle as claimed in claim 3, it is characterized in that: described terminal gear wheel (660) or described external gear (680) are axially fixed on the described minor axis (690), but wherein another then relative resilient be assemblied in slidably on the described minor axis (690), at described terminal gear wheel (660) and described external gear (680) but between also be provided with a cover elasticity clutch single direction ratchet mechanism.

5, electric assisted bicycle as claimed in claim 4 is characterized in that: being connected with one heart between described terminal gear wheel (660) and the small flywheel (670) becomes one, and is connected with axle sleeve (683) on described external gear (680) one ends; Described small flywheel (670) comprises two cover single direction ratchet mechanisms, and wherein a cover constant-mesh single direction ratchet mechanism is provided in a side of between axle sleeve (683) outer ring surface of the inner ring surface of described small flywheel (670) wheel rim and described external gear (680); But between the end face that another set of clutch single direction ratchet mechanism is provided in a side of the terminal gear wheel (660) in described small flywheel (670) wheel rim and the corresponding end face of the axle sleeve (683) of described external gear (680), push away spring (673) and corresponding thrust reverser mechanism and be provided with between the corresponding end face of the end face of the interior terminal gear wheel (660) of described small flywheel (670) wheel rim and the axle sleeve (683) of described external gear (680); Described electrical motor (630) but be generator-motor; Described minor axis (690) is assemblied on the described vehicle frame (100).

6, electric assisted bicycle as claimed in claim 5 is characterized in that: described thrust reverser mechanism comprises that activity is engaged in the anti-push shaft cover (674) on the described minor axis (690), and described thrust reverser mechanism is connected with described braking mechanism.

7, electric assisted bicycle as claimed in claim 3 is characterized in that: also be connected with between described electrical motor (630) and storage battery (620) to the electrically-charged charger of storage battery (620); Described terminal gear wheel (660) has different-diameter and the number of teeth but flat shape is fixed in the speed-changing chain group on the same axle sleeve side by side for several.

8, electric assisted bicycle as claimed in claim 3, it is characterized in that: described vehicle frame (100) comprises preceding spider (110) and Vee formation frame (120), spider (110) comprises preceding pipe (111), goes up pipe (112), manages (113), rear profile tube (114) down before described, described Vee formation frame (120) comprises upright fork (121), chain stay (122), is articulated and connected by connecting pin (130) between the rear end of the lower end of described rear profile tube (114) and/or following pipe (113) and the front end of chain stay (122); On described between pipe (112) rear end and the rear profile tube (114) for elasticity is connected, also be connected between on described upright fork (121) top and the rear profile tube (114) for elasticity.

9, electric assisted bicycle as claimed in claim 3 is characterized in that: the cross section of described tire (400) comprises wheel rim (430), PU foaming tire (420) and inflation cover tire (410) from inside to outside successively.

10, electric assisted bicycle as claimed in claim 3, it is characterized in that: the left and right sides of described vehicle frame (100) is equipped with one and steps on handle (540) and stretcher (541) and fan-shaped active meshing wheel (542), the outer ring engaging tooth (5435) of the unidirectional flywheel (543) on described hind axle (520) the right and left is meshed with the fan-shaped active meshing wheel (542) of homonymy respectively, described stretcher (541) is fixed on the described front end of stepping on handle (540), described fan-shaped active meshing wheel (542) is fixed on the described rear end of stepping on handle (540), on the handle body between the described two ends of stepping on handle (540), have pin-and-hole, be connected with handle pin (544) on described vehicle frame (100), the described handle (540) of stepping on is hinged on (100) on the described vehicle frame by this pin-and-hole and handle pin (544); Described active meshing wheel (542) is internally toothed annulus structure or inner arc chain segment structure, and described unidirectional flywheel (543) outer ring is gear or sprocket wheel, described stepping on the end face or outer ring face that handle (540) is connected this fan-shaped active meshing wheel (542); Described stretcher (541) is provided with limit hook (545) on one side.