CN103661762A - Electric power bicycle and motor drive system arranged in electric power bicycle - Google Patents
Electric power bicycle and motor drive system arranged in electric power bicycle Download PDFInfo
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- CN103661762A CN103661762A CN201310578171.8A CN201310578171A CN103661762A CN 103661762 A CN103661762 A CN 103661762A CN 201310578171 A CN201310578171 A CN 201310578171A CN 103661762 A CN103661762 A CN 103661762A
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Abstract
The invention provides an electric power bicycle and a motor drive system arranged in the electric power bicycle. The motor drive system comprises a first end cover assembly, a second end cover assembly, a shell assembly, a torque transducer, a motor assembly, an intermediate shaft assembly, a planet speed reducing mechanism, a clutch mechanism and a crankset chain wheel assembly, wherein the torque transducer assembly is connected to the intermediate shaft assembly and used for detecting torque generated by manpower, the motor assembly comprises a motor stator and a motor outer rotor, the motor stator is connected to the first end cover assembly, the motor outer rotor is connected to the intermediate shaft assembly, the input end of the planet speed reducing mechanism is connected to the motor outer rotor, the output end of the planet speed reducing mechanism is connected to the clutch assembly, the clutch assembly is connected to the intermediate shaft assembly, and the crankset chain wheel assembly is connected to the clutch assembly. According to the electric power bicycle and the motor drive system arranged in the electric power bicycle, the electric power bicycle can be driven by motor power and manpower jointly, and labor and energy are saved in the riding process.
Description
Technical field
The present invention relates to motor driver, relate in particular to a kind of built-in motor drive system and electric assisted bicycle of using with the electric assisted bicycle of torque sensor.
Background technology
Traditional Electrical Bicycle is all the electric power-assisted that provides of the additional wheel hub electric motor of stampede power by rider and obtain the power advancing, make electric booster bicycle can not cause too large burden to rider's muscle power, and after leisure, can also reach the effect of body-building.But because prior art is that form with wheel hub motor directly drives front-wheel or trailing wheel mostly, wheel hub motor belongs to slowspeed machine, lower at the moment rotating speed starting, starting current is larger, and in low speed situation, the lower battery of electric bicycle course continuation mileage that causes of efficiency is not enough in addition; In addition, at pure manpower, trample in situation, rotor can be followed wheel transfer, and motor coil can produce reverse electromagnetic resistance, causes bicyclist comparatively to require great effort in pure manpower situation; The size that output power of motor can not be trampled dynamics with manpower changes, cause motor can not long-time running in efficient district.
Summary of the invention
For defect of the prior art, the object of this invention is to provide the built-in motor drive system that the electric assisted bicycle with torque sensor that a kind of people of meeting generally drive mode is used, this system has volume compact, hill climbing ability is powerful, efficiency is high, band torque sensor intelligence regulates the advantages such as power.
The built-in motor drive system of using according to electric assisted bicycle provided by the invention, comprises first end cap assemblies 101, the second end-cap assembly 108, housing unit 104, torque sensor 102, electric machine assembly 103, Middle shaft assembly 105, planetary gear speed reducing mechanism 106, clutch mechanism 107 and chain wheel chain wheel assembly 109;
First end cap assemblies 101, housing unit 104, the second end-cap assembly 108 connect and compose drive system shell successively; Torque sensor 102, electric machine assembly 103, Middle shaft assembly 105, planetary gear speed reducing mechanism 106, clutch mechanism 107 are arranged in described drive system shell;
The input end of planetary gear speed reducing mechanism 106 is connected on motor outer rotor 7, and mouth is connected on clutch pack 107;
Chain wheel chain wheel assembly 109 is connected in clutch pack 107.
Preferably, torque sensor assembly 102 comprises shaft type moment inductor and/or velocity response sensor, and Middle shaft assembly 105 comprises axis 1; Shaft type moment inductor, velocity response sensor are installed on respectively on axis 1.
Preferably, electric machine assembly 103 also comprises stator support 4, clutch shaft bearing 28 and the second bearing 29, and Middle shaft assembly 105 comprises axis 1;
Motor stator 5 is arranged on first end cap assemblies 101 by stator support 4, and motor outer rotor 7 is connected with axis 1 by clutch shaft bearing 28, and motor outer rotor 7 is arranged on stator support 4 by the second bearing 29.
Preferably, planetary gear speed reducing mechanism 106 comprises one-level planet circular system, secondary planet train, shares inner gear 9 and planet stent 10, shares inner gear 9 and is arranged on described drive system shell;
One-level planet circular system comprises primary centre sun wheel 27 and one-level satellite gear 26; Primary centre sun wheel 27 is arranged on motor outer rotor 7 axial vane surfaces as input end, one-level satellite gear 26 is arranged on planet stent 10, electric machine assembly (103) drives 27 rotations of primary centre sun wheel, primary centre sun wheel 27 drives planet stent 10 to run slowly by one-level satellite gear 26, realizes primary speed-down;
Secondary planet train comprises secondary center sun wheel 24 and secondary planet wheel 25; Secondary center sun wheel 24 is arranged on planet stent 10, secondary planet wheel 25 is arranged on the outer ring 11 of power-transfer clutch of clutch mechanism 107, secondary center sun wheel 24 is along with planet stent 10 rotation, and by secondary planet, take turns 25 and drive clutch outer 11 to rotate, and realizes double reduction;
One-level satellite gear 26 and 27 external toothings of primary centre sun wheel and the interior engagement of shared inner gear 9, one-level satellite gear 26 is arranged between primary centre sun wheel 27 and shared inner gear 9, secondary planet wheel 25 and 24 external toothings of secondary center sun wheel and the interior engagement of shared inner gear 9, secondary planet wheel 25 is arranged between secondary center sun wheel 24 and shared inner gear 9.
Preferably, clutch mechanism 107 comprises clutch outer 11, power-transfer clutch centre circle 17, power-transfer clutch liner 21; Middle shaft assembly 105 comprises axis 1;
Clutch outer 11 is connected with planetary gear speed reducing mechanism 106, and power-transfer clutch centre circle 17 is connected with axis 1 by power-transfer clutch liner 21;
When electric machine assembly 103 drives the rotative speed of clutch outer 11 to be greater than chain wheel chain wheel assembly 109 rotating speed by planetary gear speed reducing mechanism 106, clutch outer 11 and 17 engagements of power-transfer clutch centre circle, power-transfer clutch liner 21 and power-transfer clutch centre circle 17 depart from, clutch outer 11 band dynamic clutch centre circle 17 rotations, further drive chain wheel chain wheel assembly 109 rotations that are fitted on power-transfer clutch centre circle 17, finally realize motor and drive;
When the rotating speed of trampling axis 1 when manpower is greater than chain wheel chain wheel assembly 109 rotating speed, power- transfer clutch liner 21 and 17 engagements of power-transfer clutch centre circle, clutch outer 11 and power-transfer clutch centre circle 17 depart from, 21 band dynamic clutch centre circle 17 rotations of power-transfer clutch liner, further drive chain wheel chain wheel assembly 109 rotations that are fitted on power-transfer clutch centre circle 17, finally realize manpower and drive.
Preferably, the type of electric machine assembly 103 is external rotor permanent magnetic brushless DC electric machine.
Preferably, planetary gear speed reducing mechanism 106 adopts two NEW type planetary gear speed reducing mechanisms to connect and shares the structure of internally toothed annulus.
Preferably, clutch mechanism 107 is Wedge-type bidirectional clutch.
Preferably, flanged of clutch outer 11 and be threaded the satellite gear that hole is used for fixing planetary gear speed reducing mechanism 106.
Electric assisted bicycle provided by the invention, comprises above-mentioned built-in motor drive system.
Compared with prior art, the present invention has following beneficial effect:
The intelligent control system that the present invention adopts torque sensor and controller to combine, manpower is trampled pedal crank to the mid-torsional deflection causing, and torque sensor is converted to the voltage signal linear relevant to electric signal by torsional deflection amount.Torque sensor detects pedal force size, speed sensor detects tramples velocity magnitude, two kinds of signals are passed to controller through communication interface, controller carries out determining after analyzing and processing output torque and the rotating speed of motor to two kinds of signals, finally realize motor power-assisted and manpower and trample the object of common driving, make the process of riding laborsaving and energy-conservation.
Accompanying drawing explanation
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is structural representation of the present invention;
Fig. 2 is exploded view of the present invention.
In figure:
101 is first end cap assemblies;
102 is torque sensor assembly;
103 is electric machine assembly;
104 is housing unit;
105 is Middle shaft assembly;
106 is planetary gear speed reducing mechanism;
107 is clutch pack;
108 is the second end-cap assembly;
109 is chain wheel chain wheel assembly;
1 is axis;
2 is left end cap;
3 is torque sensor;
4 is stator support;
5 is motor stator;
6 is casing;
7 is motor outer rotor;
8 is magnet steel;
9 for sharing inner gear;
10 is planet stent;
11 is clutch outer;
12 is the 3rd bearing;
13 is right end cap;
14 is chain wheel;
15 is the 4th bearing;
16 is chain wheel lock screw;
17 is power-transfer clutch centre circle;
18 is the 5th bearing;
19 is chain wheel nut;
20 is the 6th bearing;
21 is power-transfer clutch liner;
22 is chain wheel support;
23 is the 7th bearing;
24 is secondary center sun wheel;
25 is secondary planet wheel;
26 is one-level satellite gear;
27 is primary centre sun wheel;
28 is clutch shaft bearing;
29 is the second bearing;
30 is the 8th bearing.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
Motor driven systems of the present invention detects manpower by torque sensor 102 and tramples the moment of torsion of generation, according to pedal force size, control motor and export in proportion driving torque, thereby realizing manpower, to trample moment higher, motor is larger according to the ratio output torque of program setting, realize motor and help power-actuated function, and manpower and the common driving of motor power-assisted can guarantee that motor, always in the operation of efficient district, reaches energy-conservation object.
The embodiment providing below in conjunction with concrete accompanying drawing makes and further describing the present invention:
The present invention includes housing unit 104, electric machine assembly 103, Middle shaft assembly 105, planetary gear speed reducing mechanism 106, clutch mechanism 107, first end cap assemblies 101, the second end-cap assembly 108, torque sensor 102 and chain wheel chain wheel assembly 109.Housing unit 104 comprises shell 6, and first end cap assemblies 101 comprises that left end cap 2, the second end-cap assemblies 108 comprise right end cap 13.
Motor stator 5 is fixed on left end cap 2 by stator support 4, and left end cap 2 is fixed on casing 6, and motor outer rotor 7 is connected with axis 1 by clutch shaft bearing 28.
Described planetary gear speed reducing mechanism 106 has one-level planet circular system and secondary planet train, one-level planet circular system comprises primary centre sun wheel 27, one-level satellite gear 26, shares inner gear 9, there is flange face feature one end of described primary centre sun wheel 27, be fixed on motor outer rotor 7 axial vane surfaces as input end, sharing inner gear 9 is fixed on casing 6, one-level satellite gear 26 is fixed on planet stent 10, motor 103 drives 27 rotations of one-level sun wheel, one-level sun wheel 27 drives planet stent 10 to run slowly by one-level satellite gear 26, realizes primary speed-down.Secondary planet train comprises secondary center sun wheel 24, secondary planet wheel 25, shares inner gear 9, secondary center sun wheel 24 is fixed on planet stent 10, secondary planet wheel 25 is fixed on the outer ring 11 of power-transfer clutch, secondary center sun wheel 24 is along with planet stent 10 rotations, by secondary planet, take turns 25 and drive clutch outer 11 rotations, realize double reduction.
Described clutch mechanism 107 is Wedge-type bidirectional clutch, flanged of bidirectional clutch outer ring 11 and be threaded hole and be used for fixing satellite gear, bidirectional clutch centre circle 17 is connected with axis 1 by power-transfer clutch liner 21, and bidirectional clutch outer ring 11 is connected with secondary planet wheel 25.
Two-way clutch implementation is as follows: when electric machine assembly 103 drives the rotative speed of clutch outer 11 to be greater than chain wheel chain wheel assembly 109 rotating speed by planetary gear speed reducing mechanism 106, clutch outer 11 and 17 engagements of power-transfer clutch centre circle, power-transfer clutch liner 21 and power-transfer clutch centre circle 17 depart from, clutch outer 11 band dynamic clutch centre circle 17 rotations, further drive chain wheel chain wheel assembly 109 rotations that are fitted on power-transfer clutch centre circle 17, finally realize motor and drive; When the rotating speed of trampling axis 1 when manpower is greater than chain wheel chain wheel assembly 109 rotating speed, power- transfer clutch liner 21 and 17 engagements of power-transfer clutch centre circle, clutch outer 11 and power-transfer clutch centre circle 17 depart from, 21 band dynamic clutch centre circle 17 rotations of power-transfer clutch liner, further drive chain wheel chain wheel assembly 109 rotations that are fitted on power-transfer clutch centre circle 17, finally realize manpower and drive.
Therefore according to electric assisted bicycle provided by the invention, it adopts described built-in motor drive system, can under three kinds of different modes, drive: motor drive mode, manpower pattern and the power-assisted pattern of riding of riding.
Motor drive mode: after electric machine assembly 103 energisings, under the effect of the electromagnetic force that motor outer rotor 7 produces at electromagnetic induction, drive 27 rotations of primary centre sun wheel, primary centre sun wheel 27 drives planet stent 10 runnings by one-level satellite gear 26, secondary center sun wheel 24 is fixed on planet stent 10, secondary center sun wheel 24 is along with planet stent 10 runnings, secondary center sun wheel 24 is taken turns 25 by secondary planet and is driven 11 runnings of double rolling key clutch outer ring, clutch outer 11 and power-transfer clutch centre circle 17 are now in engagement, power-transfer clutch centre circle 17 rotates under the drive of clutch outer 11, power-transfer clutch centre circle 17 and power-transfer clutch liner 21 are now in disengaged position, axis 1 can not followed motor outer rotor 7 runnings, chain wheel chain wheel assembly 109 is fixed together with power-transfer clutch centre circle 17 under the effect of chain wheel nut 19, chain wheel chain wheel assembly 109 is along with power-transfer clutch centre circle 17 rotates together, finally realize the running of chain wheel chain wheel assembly 109, reach the effect of motorized motions, realize Electrical Bicycle normally travels under motor drives.
The manpower pattern of riding: electric machine assembly 103 no powers, electric machine assembly 103 is not worked, manpower pushes pedals drives axis 1, axis 1 band dynamic clutch liner 21, power-transfer clutch liner 21 and power-transfer clutch centre circle 17 are in engagement, power-transfer clutch centre circle 17 is along with axis 1 rotates together, now power-transfer clutch centre circle 17 and clutch outer 11 are in disengaged position, clutch outer 11 can not followed axis 1 rotation, chain wheel chain wheel assembly 109 is fixed together with power-transfer clutch centre circle 17 under the effect of chain wheel nut 19, chain wheel chain wheel assembly 109 is along with power-transfer clutch centre circle 17 rotates together, finally realize the running of chain wheel chain wheel assembly 109, reach the manpower object of riding, realize under manpower driving and normally travelling.
The power-assisted pattern of riding: this pattern is aforementioned two kinds of pattern combineds action, in the time of electric machine assembly 103 energising operation, bicyclist also manpower tramples drive motor.Manpower is trampled axis 1, and axis 1, under the effect of pedal force, deformation occurs, and torque sensor assembly 102 analyzes by detection the pedal force that deformation quantity detects axis 1, and controller is processed 103 runnings of drive motor assembly by signal.When electric machine assembly 103 drives the rotating speed of clutch outer 11 to be greater than chain wheel chain wheel assembly 109 rotating speed by planetary gear speed reducing mechanism 106, clutch outer 11 and 17 engagements of power-transfer clutch centre circle, realize motor and drive; When in manpower is trampled, 1 rotating speed is greater than chain wheel chain wheel assembly 109 rotating speed, power- transfer clutch liner 21 and 17 engagements of power-transfer clutch centre circle, realize manpower and drive.Under power-assisted is ridden pattern, motor drives and manpower drives and hockets, and finally realizes that motor drives and manually driven effect superposes, and bicyclist can not feel very painstaking long-distance when riding or climbing.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. a built-in motor drive system, it is characterized in that, comprise first end cap assemblies (101), the second end-cap assembly (108), housing unit (104), torque sensor assembly (102), electric machine assembly (103), Middle shaft assembly (105), planetary gear speed reducing mechanism (106), clutch mechanism (107) and chain wheel chain wheel assembly (109);
First end cap assemblies (101), housing unit (104), the second end-cap assembly (108) connect and compose drive system shell successively; Torque sensor assembly (102), electric machine assembly (103), Middle shaft assembly (105), planetary gear speed reducing mechanism (106), clutch mechanism (107) are arranged in described drive system shell;
Torque sensor assembly (102) is connected in Middle shaft assembly (105), the moment of torsion that torque sensor assembly (102) produces for detection of manpower;
Electric machine assembly (103) comprises motor stator (5) and motor outer rotor (7); Motor stator (5) is connected in first end cap assemblies (101), and motor outer rotor (7) is connected in Middle shaft assembly (105);
It is upper that the input end of planetary gear speed reducing mechanism (106) is connected to motor outer rotor (7), and mouth is connected on clutch pack (107);
Clutch pack (107) is connected in Middle shaft assembly (105);
Chain wheel chain wheel assembly (109) is connected in clutch pack (107).
2. built-in motor drive system according to claim 1, is characterized in that, torque sensor assembly (102) comprises shaft type moment inductor and/or velocity response sensor, and Middle shaft assembly (105) comprises axis (1); Shaft type moment inductor, velocity response sensor are installed on respectively on axis (1).
3. built-in motor drive system according to claim 1, is characterized in that, electric machine assembly (103) also comprises stator support (4), clutch shaft bearing (28) and the second bearing (29), and Middle shaft assembly (105) comprises axis (1);
Motor stator (5) is arranged on first end cap assemblies (101) by stator support (4), motor outer rotor (7) is connected with axis (1) by clutch shaft bearing (28), and motor outer rotor (7) is arranged on stator support (4) by the second bearing (29).
4. built-in motor drive system according to claim 1, it is characterized in that, planetary gear speed reducing mechanism (106) comprises one-level planet circular system, secondary planet train, shares inner gear (9) and planet stent (10), shares inner gear (9) and is arranged on described drive system shell;
One-level planet circular system comprises primary centre sun wheel (27) and one-level satellite gear (26); Primary centre sun wheel (27) is arranged on motor outer rotor (7) axial vane surface as input end, one-level satellite gear (26) is arranged on planet stent (10), electric machine assembly (103) drives primary centre sun wheel (27) rotation, primary centre sun wheel (27) drives planet stent (10) to run slowly by one-level satellite gear (26), realizes primary speed-down;
Secondary planet train comprises secondary center sun wheel (24) and secondary planet wheel (25); Secondary center sun wheel (24) is arranged on planet stent (10), secondary planet wheel (25) is arranged on the outer ring (11) of power-transfer clutch of clutch mechanism (107), secondary center sun wheel (24) is along with planet stent (10) rotation, and take turns (25) drive clutch outer (11) rotation by secondary planet, realize double reduction;
One-level satellite gear (26) and primary centre sun wheel (27) external toothing, and mesh with shared inner gear (9) is interior, one-level satellite gear (26) is arranged between primary centre sun wheel (27) and shared inner gear (9); Secondary planet wheel (25) and secondary center sun wheel (24) external toothing, and and shared inner gear (9) in engagement, secondary planet take turns (25) be arranged on secondary center sun wheel (24) and shared inner gear (9) it.
5. built-in motor drive system according to claim 1, is characterized in that, clutch mechanism (107) comprises clutch outer (11), power-transfer clutch centre circle (17), power-transfer clutch liner (21); Middle shaft assembly (105) comprises axis (1);
Clutch outer (11) is connected with planetary gear speed reducing mechanism (106), and power-transfer clutch centre circle (17) is connected with axis (1) by power-transfer clutch liner (21);
When electric machine assembly (103) drives the rotative speed of clutch outer (11) to be greater than chain wheel chain wheel assembly (109) rotating speed by planetary gear speed reducing mechanism (106), clutch outer (11) and power-transfer clutch centre circle (17) engagement, power-transfer clutch liner (21) and power-transfer clutch centre circle (17) depart from, clutch outer (11) band dynamic clutch centre circle (17) rotation, further drive chain wheel chain wheel assembly (109) rotation being fitted on power-transfer clutch centre circle (17), finally realize motor and drive;
When the rotating speed of trampling axis (1) when manpower is greater than chain wheel chain wheel assembly (109) rotating speed, power-transfer clutch liner (21) and power-transfer clutch centre circle (17) engagement, clutch outer (11) and power-transfer clutch centre circle (17) depart from, power-transfer clutch liner (21) band dynamic clutch centre circle (17) rotation, further drive chain wheel chain wheel assembly (109) rotation being fitted on power-transfer clutch centre circle (17), finally realize manpower and drive.
6. built-in motor drive system according to claim 1, is characterized in that, the type of electric machine assembly (103) is external rotor permanent magnetic brushless DC electric machine.
7. built-in motor drive system according to claim 1, is characterized in that, planetary gear speed reducing mechanism (106) adopts two NEW type planetary gear speed reducing mechanisms to connect and shares the structure of internally toothed annulus.
8. the built-in motor drive system that electric assisted bicycle according to claim 1 is used, is characterized in that, clutch mechanism (107) is Wedge-type bidirectional clutch.
9. built-in motor drive system according to claim 5, is characterized in that, flanged of clutch outer (11) and be threaded the satellite gear that hole is used for fixing planetary gear speed reducing mechanism (106).
10. an electric assisted bicycle, is characterized in that, comprises the built-in motor drive system described in any one in claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310578171.8A CN103661762B (en) | 2013-11-18 | 2013-11-18 | Electric assisted bicycle and its built-in motor drive system |
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| CN201310578171.8A CN103661762B (en) | 2013-11-18 | 2013-11-18 | Electric assisted bicycle and its built-in motor drive system |
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| CN103661762A true CN103661762A (en) | 2014-03-26 |
| CN103661762B CN103661762B (en) | 2017-10-10 |
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| CN104724244A (en) * | 2014-10-31 | 2015-06-24 | 太仓市悦博电动科技有限公司 | Built-in-motor electric-bicycle middle axle force moment sensing system |
| WO2015161545A1 (en) * | 2014-04-22 | 2015-10-29 | 苏州八方电机科技有限公司 | Electric bicycle central axle torque speed sense device |
| EP3012181A1 (en) | 2014-10-21 | 2016-04-27 | Wuxi Aimeike Power Machinery Company Limited | Mid-motor drive system for an electric bicycle |
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Address after: 201108 Minhang District City, Shanghai Road, No. 2060, 1-3 floor, 5 Patentee after: Xin'an Naida drive technology (Shanghai) Limited by Share Ltd Address before: 201108 Minhang District City, Shanghai Road, No. 2060, 1-3 floor, 5 Patentee before: Xinan Naida Drive Technology (Shanghai) Co.,Ltd. |
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Effective date of registration: 20180329 Address after: 214199 power equipment Industrial Park, Donggang Town Industrial Park, Xishan District, Wuxi City, Jiangsu Patentee after: Drive technology (Jiangsu) Co., Ltd. Address before: 201108 Minhang District City, Shanghai Road, No. 2060, 1-3 floor, 5 Patentee before: Xin'an Naida drive technology (Shanghai) Limited by Share Ltd |