CN202574553U - Electric power assisting device for bicycle - Google Patents
Electric power assisting device for bicycle Download PDFInfo
- Publication number
- CN202574553U CN202574553U CN2012201497770U CN201220149777U CN202574553U CN 202574553 U CN202574553 U CN 202574553U CN 2012201497770 U CN2012201497770 U CN 2012201497770U CN 201220149777 U CN201220149777 U CN 201220149777U CN 202574553 U CN202574553 U CN 202574553U
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- Prior art keywords
- shell
- bicycle
- output shaft
- fixed
- wheel
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- Expired - Fee Related
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/70—Rider propelled cycles with auxiliary electric motor power-driven at single endless flexible member, e.g. chain, between cycle crankshaft and wheel axle, the motor engaging the endless flexible member
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses an electric power assisting device for a bicycle, which is characterized by comprising a center shaft installed on a bicycle frame, a toothless flywheel assembled on the center shaft through a toothless flywheel one-way clutch, and a chain wheel fixed on the toothless flywheel, wherein the chain wheel is connected with a flywheel, which is fixed on a bicycle back wheel, through a chain; the electric power assisting device also comprises an electric drive unit and an electric drive sprocket wheel; the electric drive unit comprises a shell fixed on the bicycle frame, and a motor, a planet gear speed reducer, an inner tooth ring, an inner tooth ring one-way clutch and an output shaft which are arranged in the shell; a motor rotating shaft is connected with the inner tooth ring through the planet gear speed reducer in a transmission mode; the inner tooth ring is assembled on the output shaft through the inner tooth ring one-way clutch; the output shaft extends out of the shell and is fixed with the electric drive sprocket wheel; and the electric drive sprocket wheel meshes with the chain. The utility model has the advantages of simplified structure, stable operation and large output torque, and can greatly enhance the climbing capacity of the electric bicycle.
Description
Technical field
the utility model relates to a kind of bicycle electric work-saving device.
Background technology
Electrical Bicycle since its brisk characteristics such as laborsaving and pollution-free promote the use in China just day by day.Mostly the electric driver that adopts on the conventional at present Electrical Bicycle is wheel hub motor; This wheel hub motor usually by main shaft, through the wheel hub shell of bearing installation on main shaft, be located at motor in the wheel hub shell, gear reduction, power-transfer clutch and form jointly with the wheel hub end housing that the wheel hub shell fixes.Said gear reduction is mainly by being fixed on the sun gear on the rotor and constituting with the sun gear planet gear meshed; The fixing internally toothed annulus that is meshed with planetary wheel on the said wheel hub outer casing inner wall, thus make the wheel hub shell to rotate by motor-driven.Said power-transfer clutch then is assemblied on the axis with planetary wheel.When concrete work: adopt battery and controller to come the drive motor rotor to rotate, rotor then drives planetary wheel, gear ring rotation through sun gear, and by the free-wheel clutch drive hub shell transfer torque of gear ring through being coupled with it.Said hub shell and the bicycle rear of taking turns bound, and then is fixed with flywheel (band tooth) on the bicycle rear, and this flywheel links to each other with chain wheel on being fixed on bicycle middle shaft through chain.Said flywheel has the free-wheel clutch function, and when guaranteeing the wheel hub motor driven in rotation, chain and chain wheel can transfers.
however adopt wheel hub motor to have following problems as the electric driver of Electrical Bicycle: 1. because wheel hub motor is directly to drive the wheel output torque; So can't change speed ratio; Improve output torque thereby promptly have no idea to underspeed through gearshift, so hill climbing ability is often not fully up to expectations as automobile; 2. in order to guarantee enough output torques,, just must select more high-performance motor for use, certainly will increase cost and weight like this, also can increase the burden of battery to remedy the deficiency of hill climbing ability.3. owing to being to come bonded assembly through spoke between wheel hub motor and wheel, so not being that the professional is very difficult oneself assembles, and often is not easy to maintenance and repacking to bicycle.
Summary of the invention
the utility model purpose is: a kind of designs simplification is provided, and running is stable, and the big bicycle electric work-saving device of output torque, and this device is installed on the Electrical Bicycle can strengthen its hill climbing ability greatly.
The technical scheme of
the utility model is: a kind of bicycle electric work-saving device; It is characterized in that comprising the axis that is installed on the bicycle rack, be assemblied in the anodontia flywheel on the axis and be fixed on the chain wheel on the anodontia flywheel that said chain wheel links to each other with flywheel on being fixed on bicycle rear by chain by anodontia flywheel free-wheel clutch; Also comprise electric driver and electric drive sprocket; Said electric driver comprises the shell that is fixed on the bicycle rack and motor, planetary gear reducing mechanism, internally toothed annulus, internally toothed annulus free-wheel clutch and the output shaft be located in the shell; Machine shaft is in transmission connection through planetary gear reducing mechanism and internally toothed annulus; Said internally toothed annulus is assemblied on the output shaft through the internally toothed annulus free-wheel clutch, and said output shaft stretches out shell and electric drive sprocket is fixed, electric drive sprocket then with chain engages.
are preferred; Electric driver described in the utility model also further comprise be located in the shell, fix with shell and with the interior axle of the coaxial setting of machine shaft; Have the axis hole that supplies output shaft to stretch out on the said shell, between the axis hole inner edge on said output shaft front end and the shell output shaft outer bearing is installed; And the output shaft rear end forms the interior ring of a circle around interior axle, between said interior ring and the interior axle output shaft neck bearing is installed, and it is peripheral that said internally toothed annulus free-wheel clutch is positioned at said ring.End with output shaft in the utility model is positioned on the interior axle through the output shaft neck bearing; The other end is positioned on the shell of electric driver through the output shaft outer bearing; Because of interfixing between interior axle and the shell; So can guarantee that through the location of inside and outside two bearings output shaft bears bigger diametral load, strengthens the run stability of electric driver greatly.
are preferred; The version of planetary gear reducing mechanism described in the utility model is following: it comprises the sun gear that is fixed on the machine shaft and is distributed in sun gear three dual gears on every side; Each dual gear constitutes by co-axially fixed prime planetary wheel and back level planetary wheel; Said three prime planetary wheels all with sun gear engagement, a level planetary wheel then all meshes with internally toothed annulus after three.
are preferred; Be fixed with erecting frame described in the utility model on the bicycle rack, the cover top portion of said electric driver is accomplished the upper and lower location for electric driver through being bolted on the erecting frame with this; Shell one side of said electric driver also is fixed with connecting panel simultaneously; Said connecting panel is provided with perforate, is fixed with the axis sleeve on the said bicycle rack, is located in the bottom bracket axle tube in said; Said connecting panel is placed on the axis sleeve fixing by the perforate on it, accomplish center and left and right location for electric driver with this.
are preferred, the utility model also comprise the tensioner that is movably arranged on the shell be pivoted on the tensioner and with the idler sprocket of chain engages, also be provided with the tensioner spring between said tensioner and the shell.Said tensioner, tensioner spring and idler sprocket and the assembly relation between them are routine techniques, increase the purpose of idler sprocket in the utility model, and the one, in order to increase the cornerite of electric drive sprocket, guarantee transmission power; The 2nd, in order to ensure chain certain tensile force is arranged, can not cause faults such as chain.
are preferred, and motor described in the utility model is the external stator inner rotor core.
are the same with routine techniques, and the two ends of axis described in the utility model all are fixed with crank, and pivoting on the crank is equipped with pedal.
The concrete operation principles of the utility model is following:
said chain wheels (being installed on the anodontia flywheel), electric drive sprocket, flywheel (being installed on the bicycle rear), idler sprocket, chain have been formed a chain drive system.Chain wheel wherein, electric drive sprocket are driving wheel, and flywheel then is a flower wheel.
are when machine operation; The electricity drive sprocket clockwise rotates; Drive chain wheel, anodontia flywheel, flywheel and bicycle rear running through chain; Because the anodontia flywheel that is installed on the chain wheel has the cause of one-way clutch, this moment, anodontia flywheel was the state that is in " leave ", and promptly axis is to follow anodontia flywheel commentaries on classics.
are stepped on pedal through pin and are driven crank and axis rotation when manpower is ridden, and clockwise rotate through the anodontia flywheel drive chain wheel with middle axle mounting, drive flywheel and bicycle rear running by chain again; Owing to drive the output shaft of electric drive sprocket and drive the cause that the internally toothed annulus free-wheel clutch is housed between the internally toothed annulus of its running; At this moment; Electricity drive sprocket and the internally toothed annulus that drives it are the states that is in " leaving "; Be that internally toothed annulus, three dual gears and machine shaft can and then not change, so just reduced riding resistance greatly.
The utility model has the advantages that:
This bicycle electric work-saving device that the utility model provides is compared with the work-saving device of the employing wheel hub motor of routine, and following three advantages are arranged:
are 1. for the higher motor of rotating speed; Electric driver in the utility model is implemented to drive through the sprocket system that an electric drive sprocket on the special output shaft drives bicycle; Since the number of teeth of electric drive sprocket can design-calculated less than the number of teeth of flywheel; Especially for the multi-change speed car, therefore the number of teeth of big flywheel even can surpass three times of the electric drive sprocket number of teeth on its trailing wheel can obtain very big speed ratio; Export bigger driving force, thereby strengthened the hill climbing ability of Electrical Bicycle greatly.
2. are positioned at output shaft one end of electric driver in the utility model through the output shaft neck bearing on the axle; The other end is positioned on the shell of electric driver through the output shaft outer bearing; Because of interfixing between interior axle and the shell; So can guarantee that through the location of inside and outside two bearings output shaft bears bigger diametral load, thereby strengthen the run stability of the utility model greatly.
The structure that wheel hub motor shell and bicycle rear are bound in the prior art is 3. compared in
; Electric driver in the utility model has special output shaft and comes bicycle rear is implemented to drive through sprocket system; The event structure is simplified more and is independent; Dismounting is also convenient, and easy Electrical Bicycle to employing the utility model keeps in repair and reequips.Because the utility model can be exported very high moment of torsion, alleviated superpower requirement relatively in addition, reduced cost of bicycle and weight to a certain extent for motor.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Fig. 1 is the structural front view of the utility model;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3 is the independent structure cutaway view of electric driver among Fig. 1.
wherein: 1, axis; 2, anodontia flywheel; 3, chain wheel; 4, chain; 5, electric drive sprocket; 6, erecting frame; A, electric driver; 7, shell; 8, motor; 9, internally toothed annulus; 10, internally toothed annulus free-wheel clutch; 11, output shaft; 11a, interior ring; 12, interior axle; 13, output shaft outer bearing; 14, output shaft neck bearing; 15, sun gear; 16, dual gear; 16a, prime planetary wheel; 16b, back level planetary wheel; 17, bolt; 18, connecting panel; 19, axis sleeve; 20, idler sprocket; 21, crank; 22, screw; 23, tensioner; 24, tensioner spring.
The specific embodiment
embodiment: combine Fig. 1, Fig. 2 and shown in Figure 3, this bicycle electric work-saving device that the utility model provides mainly is made up of axis 1, anodontia flywheel 2, chain wheel 3, chain 4, electric drive sprocket 5, erecting frame 6, electric driver A, connecting panel 18, idler sprocket 20, crank 21, tensioner 23 and tensioner spring 24 jointly.
are specifically as shown in Figure 1; The same with routine techniques; Be fixed with axis sleeve 19 on the said bicycle rack (not drawing among the figure); Said axis 1 is located in the axis sleeve 19, and the two ends of said axis 1 all are fixed with crank 21, and pivoting on the crank 21 is equipped with pedal (not drawing among the figure).Said anodontia flywheel 2 is assemblied on the axis 1 by anodontia flywheel free-wheel clutch (invisible among the figure); Chain wheel 3 is fixed on the anodontia flywheel 2, and said chain wheel 3 links to each other with flywheel (not drawing among the figure) on being fixed on bicycle rear (not drawing among the figure) by chain 4.
The key features of
the utility model is the design to electric driver A, and this electric driver A has shell 7.In conjunction with shown in Figure 2; Be fixed with erecting frame 6 on the said bicycle rack, shell 7 tops of said electric driver A are fixed on the erecting frame 6 through bolt 17, accomplish the upper and lower location for electric driver A with this; Shell 7 one sides of said electric driver A also are fixed with connecting panel 18 through screw 22 simultaneously; Said connecting panel 18 is provided with perforate, and this connecting panel 18 is placed on the axis sleeve 19 fixing by the perforate on it, accomplish center and left and right location for electric driver A with this.
specifically combine shown in Figure 3, are provided with motor 8, planetary gear reducing mechanism, internally toothed annulus 9, internally toothed annulus free-wheel clutch 10, output shaft 11, interior axle 12, output shaft outer bearing 13 and output shaft neck bearing 14 in the shell 7 of the A of electric driver described in the utility model.Motor described in the present embodiment 8 is the external stator inner rotor core; Its rotating shaft is in transmission connection through planetary gear reducing mechanism and internally toothed annulus 9; Said internally toothed annulus 9 is assemblied on the output shaft 11 through internally toothed annulus free-wheel clutch 10; It is fixing that said output shaft 11 stretches out the axis hole and the electric drive sprocket 5 that have on the shell 7,5 of electric drive sprockets and chain 4 engagements.
In described in
present embodiment axle 12 with shell 7 fixing and with the coaxial setting of the rotating shaft of motor 8, installation output shaft outer bearing 13 between the axis hole inner edge on said output shaft 11 front ends and the shell 7; And output shaft 11 rear ends form the interior ring 11a of a circle around interior axle 12, between said interior ring 11a and the interior axle 12 output shaft neck bearing 14 are installed, and it is peripheral that said internally toothed annulus free-wheel clutch 10 is positioned at said ring 11a, as shown in Figure 3.End with output shaft 11 in the utility model is positioned on the interior axle 12 through output shaft neck bearing 14; The other end is positioned on the shell 7 of electric driver A through output shaft outer bearing 13; Because of interfixing between interior axle 12 and the shell 7; So can guarantee that through the location of inside and outside two bearings output shaft 11 bears bigger diametral load, strengthens the run stability of electric driver A greatly.
Planetary gear reducing mechanism described in
present embodiment by be fixed in motor 8 rotating shafts sun gear 15 be distributed in three dual gears 16 around the sun gear 15 (among Fig. 3 only visible two) and constitute; Each dual gear 16 constitutes by co-axially fixed prime planetary wheel 16a and back level planetary wheel 16b; Said three prime planetary wheel 16a all mesh with sun gear 15; Level planetary wheel 16b then all meshes with internally toothed annulus 9 after three, and is as shown in Figure 3.
are as shown in Figure 1, are movably installed with tensioner 23 on the shell described in the present embodiment 7, and pivoting on the said tensioner 23 is equipped with and chain 4 ingear idler sprockets 20, is provided with tensioner spring 24 between said tensioner 23 and the shell 7.Increase the purpose of idler sprocket 20 in the utility model, the one, in order to increase the cornerite of electric drive sprocket 5, guarantee transmission power; The 2nd, in order to ensure chain 4 certain tensile force is arranged, can not cause faults such as chain.
In conjunction with Fig. 1-shown in Figure 3, the concrete operation principles of present embodiment is following:
said chain wheel 3 (being installed on the anodontia flywheel 2), electric drive sprocket 5, flywheel (being installed on the bicycle rear), idler sprocket 20, chain 4 have been formed a chain drive system.Wherein chain wheel 3, electric drive sprocket 5 are driving wheel, and flywheel then is a flower wheel.
are when motor 8 work; Electricity drive sprocket 5 clockwise rotates; Drive the flywheel running on chain wheel 3, anodontia flywheel 2 and the bicycle rear through chain 4, rotate, because the anodontia flywheel 2 that is installed on the chain wheel 3 has the cause of one-way clutch thereby drive bicycle rear; This moment, anodontia flywheel 2 was the states that are in " leave ", and promptly axis 1 is to follow anodontia flywheel 2 commentaries on classics.
are when manpower is ridden; Step on pedal (not drawing among the figure) through pin and drive crank 21 and axis 1 rotation; And drive chain wheels 3 through the anodontia flywheel of installing with axis 12 and clockwise rotate, drive flywheels by chain 4 again and turn round with bicycle rear; Owing to drive the output shaft 11 of electric drive sprocket 5 and drive the cause that internally toothed annulus free-wheel clutch 10 is housed between the internally toothed annulus 9 of its running; At this moment; Electricity drive sprocket 5 and the internally toothed annulus 9 that drives it are the states that are in " leaving "; Be that internally toothed annulus 9, three dual gears 16 and motor 8 rotating shafts can and then not changeed, so just reduced riding resistance greatly.
the foregoing description certainly only are the technical conceive and the characteristics of explanation the utility model; Its purpose is to let the people who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection domain of the utility model with this.All modifications of doing according to the spirit of the utility model main technical schemes all should be encompassed within the protection domain of the utility model.
Claims (7)
1. bicycle electric work-saving device; It is characterized in that comprising the axis (1) that is installed on the bicycle rack, be assemblied in the anodontia flywheel (2) on the axis (1) and be fixed on the chain wheel (3) on the anodontia flywheel (2) that said chain wheel (3) links to each other with flywheel on being fixed on bicycle rear by chain (4) by anodontia flywheel free-wheel clutch; Also comprise electric driver (A) and electric drive sprocket (5); Said electric driver (A) comprises the shell (7) that is fixed on the bicycle rack and is located at motor (8), planetary gear reducing mechanism, internally toothed annulus (9), internally toothed annulus free-wheel clutch (10) and the output shaft (11) in the shell (7); Motor (8) rotating shaft is in transmission connection through planetary gear reducing mechanism and internally toothed annulus (9); Said internally toothed annulus (9) is assemblied on the output shaft (11) through internally toothed annulus free-wheel clutch (10); It is fixing with electric drive sprocket (5) that said output shaft (11) stretches out shell (7), and electric drive sprocket (5) then meshes with chain (4).
2. bicycle electric work-saving device according to claim 1; It is characterized in that said electric driver (A) also comprise be located in the shell (7), with shell (7) fixing and with the interior axle (12) of the coaxial setting of motor (8) rotating shaft; Have the axis hole that supplies output shaft (11) to stretch out on the said shell (7), between the axis hole inner edge on said output shaft (11) front end and the shell (7) output shaft outer bearing (13) is installed; And output shaft (11) rear end forms the interior ring (11a) of a circle around interior axle (12); Between ring (11a) and the interior axle (12) output shaft neck bearing (14) is installed in said, said internally toothed annulus free-wheel clutch (10) is positioned at said ring (11a) periphery.
3. bicycle electric work-saving device according to claim 1 and 2; It is characterized in that said planetary gear reducing mechanism comprises is fixed on the sun gear (15) in motor (8) rotating shaft and is distributed in sun gear (15) three dual gears (16) on every side; Each dual gear (16) constitutes by co-axially fixed prime planetary wheel (16a) and back level planetary wheel (16b); Said three prime planetary wheels (16a) all with sun gear (15) engagement, a level planetary wheel (16b) then all meshes with internally toothed annulus (9) after three.
4. bicycle electric work-saving device according to claim 1; It is characterized in that being fixed with on the said bicycle rack erecting frame (6); Shell (7) top of said electric driver (A) is fixed on the erecting frame (6) through bolt (17); Shell (7) one sides of said electric driver (A) also are fixed with connecting panel (18) simultaneously, and said connecting panel (18) is provided with perforate, is fixed with axis sleeve (19) on the said bicycle rack; Said axis (1) is located in the axis sleeve (19), and said connecting panel (18) is placed on axis sleeve (19) by the perforate on it and goes up fixing.
5. according to claim 1 or 4 described bicycle electric work-saving devices; It is characterized in that also comprising the tensioner (23) that is movably arranged on the shell (7) and be pivoted on that tensioner (23) is gone up and with chain (4) ingear idler sprocket (20), also be provided with tensioner spring (24) between said tensioner (23) and the shell (7).
6. bicycle electric work-saving device according to claim 1 and 2 is characterized in that said motor (8) is the external stator inner rotor core.
7. according to claim 1 or 4 described bicycle electric work-saving devices, it is characterized in that the two ends of said axis (1) all are fixed with crank (21), crank (21) is gone up to pivot pedal is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201497770U CN202574553U (en) | 2012-04-11 | 2012-04-11 | Electric power assisting device for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201497770U CN202574553U (en) | 2012-04-11 | 2012-04-11 | Electric power assisting device for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202574553U true CN202574553U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201497770U Expired - Fee Related CN202574553U (en) | 2012-04-11 | 2012-04-11 | Electric power assisting device for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202574553U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632963A (en) * | 2012-04-11 | 2012-08-15 | 苏州工业园区同盛车业有限公司 | Electric power assisting device for bicycles |
| CN104276249A (en) * | 2014-10-09 | 2015-01-14 | 王春阳 | Intelligent uniform-force pedal moped |
| CN107428393A (en) * | 2015-02-13 | 2017-12-01 | 斯沃莱茨德塞格尔公司 | Electric bicycle transmission system, method and apparatus |
| WO2024021788A1 (en) * | 2022-07-29 | 2024-02-01 | 广东威灵电机制造有限公司 | Mid-drive motor and electric bicycle |
-
2012
- 2012-04-11 CN CN2012201497770U patent/CN202574553U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632963A (en) * | 2012-04-11 | 2012-08-15 | 苏州工业园区同盛车业有限公司 | Electric power assisting device for bicycles |
| CN104276249A (en) * | 2014-10-09 | 2015-01-14 | 王春阳 | Intelligent uniform-force pedal moped |
| CN104276249B (en) * | 2014-10-09 | 2016-07-13 | 王春阳 | The even power assisted pedal stroke car of intelligence |
| CN107428393A (en) * | 2015-02-13 | 2017-12-01 | 斯沃莱茨德塞格尔公司 | Electric bicycle transmission system, method and apparatus |
| US10358133B2 (en) | 2015-02-13 | 2019-07-23 | Civilized Cycles Incorporated | Electric bicycle transmission systems, methods, and devices |
| CN107428393B (en) * | 2015-02-13 | 2020-05-15 | 斯沃莱茨德塞格尔公司 | Electric bicycle transmission system, method and apparatus |
| WO2024021788A1 (en) * | 2022-07-29 | 2024-02-01 | 广东威灵电机制造有限公司 | Mid-drive motor and electric bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20140411 |