CN1049630C - Intelligent type electricity-aid hub - Google Patents
Intelligent type electricity-aid hub Download PDFInfo
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- CN1049630C CN1049630C CN96109332A CN96109332A CN1049630C CN 1049630 C CN1049630 C CN 1049630C CN 96109332 A CN96109332 A CN 96109332A CN 96109332 A CN96109332 A CN 96109332A CN 1049630 C CN1049630 C CN 1049630C
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- pedal torque
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- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000007639 printing Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
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- 238000000605 extraction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The present invention belongs to the technical field of an electric boosted bicycle. The present invention comprises a foot pedal torque detection device and an electric drive device, wherein the foot pedal torque detection device is a comparator torque detection device capable of detecting the rotation phase of rotation speed simultaneously; the detection device and the electric drive device are both arranged in the outer shell of a rotary wheel hub integrally. The present invention adopts a comparison principle of the rotation phase of a new concept, and the turning moment of a foot pedal on a rotating component is measured directly and accurately by a simple mechanism. Because of the refinement of the structure of a mechanism for detecting the turning moment and rotation speed for the design of the overall structure of an electric wheel hub, the structural arrangement of the electric drive device can have large optimum design independence.
Description
The invention belongs to the electromotive power assisted bicycle technical field, the particularly reform of pedal torque, speed detecting unit and whole wheel hub structure design in the intelligent type electricity-aid hub.
Electromotive power assisted bicycle is the hand-held design vehicle of a kind of manpower driving and driven by power and usefulness.Onrelevant between general electromotive power assisted bicycle manpower driving and the driven by power.And advanced bicycle with intellectual electric driver will at first be measured the size of torque (or claiming pedal moment) of bicyclist's pedal power and the size of rotating speed, and control to adjust the size of the horsepower output and the electric current of electrical motor as control signal with this torque value and tachometer value, not only alleviate the effect of manpower but also power saving to reach.The microcomputerized control technology is as extensively adopting in each technical field than proven technique at present, so the gordian technique of this intelligent mode is how to measure the size of each moment pedal torque and the size of rotating speed, so that carry out Based Intelligent Control according to these two numerical value in good time.And the difficult point of measuring pedal torque is that when bicyclist's pedal application of force each parts that transmit this pedal torque are all among gyrating.If directly use various sensors to survey pedal powers, then these sensors also certainly will gyrate, and the lead-in wire that signal is spread out of from sensor also will be among the rotation winding that does not stop and become a unmanageable problem.Simultaneously, this torque checking system will keep stable, reliable and high duplication in the process of riding all the year round.For solving these special technique difficult points in the measurement of electromotive power assisted bicycle pedal torque, different testing agencies has appearred.Wherein a kind of scheme is with pedal torque measuring mechanism and the electric driver mechanism formation intelligent type electricity-aid hub that is combined as a whole.
An example of the prior art is on hind axle, and elastic body shift fork and screw inclined plane cam are made on the dish of same garden.When applying pedal power, the spiral inclination wedge surface promotes one can be along the nylon sliding part of axial direction slip.There is a garden ring-type electric conductor the end of nylon spare in rotation, and in its disposed outside a motionless coil is arranged, and when axial straight-line displacement took place nylon spare, the inductance of coil changed, and this longitudinal travel variable signal has promptly been represented the variation of pedal torque.But this kind structure is owing to will convert pedal torque to axial straight-line displacement by screw inclined plane cam etc., and then measure longitudinal travel by axial sensor, so this a succession of axial means will take bigger axial arrangement size, cause the axial dimension of electric wheel hub to become big.Simultaneously, owing to will arrange above-mentioned a series of torque measurement mechanism on the center shaft position,,, and make electric wheel hub become a very big pan so the overall radial dimension of electric wheel hub also can only become greatly so electric driver mechanism must be avoided the center shaft position.And the required tachometer value of Based Intelligent Control also must be finished by the rotary speed detecting system and the tachogen that are provided with separately in addition.
The objective of the invention is to for overcoming the weak point of prior art, grind and create the diverse intelligent electric runner hub of a kind of principle, the checking system of this intelligent electric runner hub will not adopt the principle that pedal torque is converted to straight-line displacement, and the principle of comparing in the rotation position of adopting ideamonger, directly accurately measure pedal torque on the parts that rotating by simple mechanism, simultaneously torque checking system that must be provided with respectively in the above-mentioned example and rotary speed detecting system are served as simultaneously by a unique sensing system.And on the electric wheel hub general structure design, because torque and the structural of rotary speed tester structure refine, can make on the structural arrangement of electric driver mechanism has bigger optimal design independence.
The intelligent electric runner hub that a kind of electric power-assisted vehicle of the present invention is used, comprise pedal torque detecting device and electric driver, it is characterized in that said pedal torque detecting device for detecting the rotation phase comparative torque master of rotating speed simultaneously, said detecting device and electric driver are installed in rotatable the wheel and are an integral body in the hub shell.
The said pedal torque detecting device of the present invention comprises detecting sensor, also comprise the one group of turning unit that is arranged in any one rotating shaft of bearing or transmitting pedal torque, this turning unit is bearing in elastomeric two ends respectively, invest one group of relative rotation detection ring on this turning unit respectively, the same garden of said each detection ring has on week and is the angle mark member that known spacings is arranged more than two, and said detecting sensor is arranged on the not kinetoplast with respect to the position of angle mark member.
Adopt above-mentioned intelligent electric runner hub, after pedal was stressed, the turning unit on the electric wheel hub axle was also with torque suspension, and the elastic body that is bearing between the two halves of turning unit will deform.Because elastomeric distortion will relatively rotate between coaxial two parts turning unit.Be attached to two groups of angle mark members on the detection ring on this two halves respectively, for example transmission area also turns over an angle each other.When not stressing, the transmission area on the halves hides light tight mutually, because the angle that staggers, two transmission areas will be overlapped and printing opacity.Pedal power is big, and the two detection rings angle that staggers is big, and two transmission area laps are big more, and the printing opacity time is long more.But because the rotating speed speed is changing constantly, so the time of printing opacity is the size of authentic representative relative rotation not, also need and be separated by printing opacity time of transmission area of known angle of period profile compares, could really draw the accurate size of corner mutually, thereby accurately measure pedal torque.A principle of comparing that Here it is.And the printing opacity situation of the known angle of the period profile that usefulness has measured also can draw tachometer value simultaneously exactly by analytical cycle signal or known angle signal.During detection, can go out the integrated signal of two detection rings with a sensor, also available two sensors detect the signal of each detection ring respectively.Fig. 1 is under four kinds of situations, the signal graph that sensor receives.(A) integrated signal of one group of detection dish receiving with a sensor of expression, the value of pedal torque is by relative rotation signal t
1(i.e. the printing opacity time of an overlapping transmission region) and known angle signal T
1The ratio of (through the time between two adjacent overlapping transmission regions) is determined, and tachometer value can be by known angle signal T
1Directly determine.(B) in, the size of pedal torque is the same with (A), but the rotating speed difference.So t
2And T
2Numerical value and (A) in different, but t
2And T
2Ratio and t
1And T
1Ratio equate.(C) in, the figure of expression signal when pedal torque becomes big, t at this moment
3And T
3Ratio increase.(D) represent when detecting two relative rotation detection dishes respectively relative rotation signal t with two sensors
4Extraction method.And known angle signal both can use T
4, also can use T
4', among the figure up and down two signals be two sensors detected signals respectively.
The present invention proposes to utilize and rotate the principle of comparing in the position, directly measure the new solution of the relative rotation of the one group of turning unit that bears torque, take this directly to measure the pedal torque on the parts that rotating, and need not convert thereof into non-rotary displacement signal, also can measure the necessary speed revolution value of Based Intelligent Control simultaneously simultaneously.
The sensor of the invention described above also can be condenser or inductance type or eddy current sensor, and said angle mark member then is a kind of of the plane in zone of the certain angle that constitutes of medium or metal or one section angle grid line or angle tooth.Said sensor can also be Magnetic Sensor, said angle mark the member also plane in the certain angle zone that constitutes of magnetic material or one section angle grid line, angle tooth.
The present invention has following preceence:
The first, rotate the phase comparative detecting device and detect torque and tachometer value owing in electric wheel hub, be provided with, control so can carry out intellectuality electric wheel hub, have and not only alleviate the characteristics of manpower but also power saving, consumption of current reduces greatly than non intelligentization electric wheel hub.
The second, owing in electric wheel hub, do not need to convert pedal torque to axial linear position, so the axial arrangement size is little, the structure space that whole torque and speed detecting unit take is also very little.It is more reasonable that this just makes on the electric wheel hub general design, and the overall volume of whole electric wheel hub is reduced greatly.
The 3rd, torque master in the electric wheel hub and speed detecting unit can be served as simultaneously by same sensor detecting system, and this is that prior art can not be accomplished.
The 4th, structure is very succinct, because the principle that adopts the position to compare, so the survey precision height.Because parts are few, reliability, long-time stability also are improved.
The 5th, assembling, adjustment are simply, conveniently.
The 6th, the torque in the electric wheel hub, speed detecting unit can be arranged on any one parts that bears or transmit pedal torque easily.Also the collecting of electrical controls also can be arranged in the electric wheel hub.
Description of drawings:
Fig. 1 is the signal graph of testing agency among the present invention.
Fig. 2 is the overall structure scheme drawing of a kind of embodiment of the present invention.
Fig. 3 is a present embodiment testing agency principle schematic.
The present invention proposes a kind of intelligent type electricity-aid hub embodiment shown in Fig. 2-3, describes the structure and the working process of present embodiment in conjunction with the accompanying drawings in detail.
The overall structure of present embodiment as shown in Figure 2, it comprises the wheel hub shell that is combined into unitary rotation by rotating left and right sides end cap 6,8 and hub body 7, and the electric driver mechanism 9 and the testing agency's three parts that are provided with are wherein formed.Wherein electric driver mechanism is made up of the motor and the gear reduction that are installed in the motionless aluminium backing.Its concrete structure is not shown, can adopt any electric driver mechanism in the electric wheel hub of existing various electric power-assisted vehicles.The last side of same axle of electric driver mechanism is equipped with two plate-like turning units 4 and 5 of testing agency, two turning unit facing surfaces respectively have four semi-round grooves, form the slotted eye of settling spring 3, the outer garden week of two turning units is fixed with two relative rotation detection rings 2 respectively, all equal intervals have six groups of printing opacity slotted holes in the same garden of every detection ring, photoelectric detector 1 is installed in two arm inside face places that are fixed on the type support on the aluminium backing, and is corresponding with the printing opacity slotted hole position of detection ring.Each printing opacity slotted hole angle is 20 °, as shown in Figure 3.Right rotation parts 4 link to each other by screw thread with flywheel among Fig. 2.Its working process as: pedal torque passed to the right rotation parts by flywheel when pedal was stressed, pass to anticlockwise parts 5 by spring again, and the left rotation and right rotation parts are produced relative rotation, be separately fixed at printing opacity slotted hole on the detection ring on two turning units, do not hide mutually when stressing, a relative rotation and printing opacity each other stagger after stressed.At this moment opto-electronic pickup receives relative rotation information, with known angle information, then can calculate torque value and pass the speed value, these data will be the foundations of electric driver mechanism being carried out intelligent control, under the control of function unit, behind the motor process two-stage gear reduction of electric driver mechanism, then can promote to take turns the hub shell unitary rotation.
Fig. 3 is testing agency's principle schematic.Bear pedal torque on the left and right sides two halves turning unit 11.Wherein half imports pedal torque, second half output.The two ends of elastic body 12 are bearing in respectively on the left and right two halves turning unit 11.Two relative rotation detection rings 13 are separately fixed on the two halves turning unit 11.At six groups of loop holes 14 that equidistantly become 30 ° of angles of relative rotation detection ring 13 upper edge garden Zhou Kaiyou, opto-electronic pickup 10 is accepted the optical signal of the overlapping light transmission part 15 of two detection rings.
Claims (6)
1, the used intelligent electric runner hub of a kind of electric power-assisted vehicle, comprise pedal torque detecting device and electric driver, it is characterized in that said pedal torque detecting device for detecting the rotation phase comparative torque master of rotating speed simultaneously, said detecting device and electric driver are installed in rotatable the wheel and are an integral body in the hub shell.
2, as the said intelligent electric runner hub of claim 1, it is characterized in that said pedal torque detecting device comprises detecting sensor, also comprise the one group of turning unit that is arranged in any one rotating shaft of bearing or transmitting pedal torque, this turning unit is bearing in elastomeric two ends respectively, invest one group of relative rotation detection ring on this turning unit respectively, the same garden of said each detection ring has on week and is the angle mark member that known spacings is arranged more than two, and said detecting sensor is arranged on the not kinetoplast with respect to the position of angle mark member.
3,, it is characterized in that said sensor is a kind of of transmission-type or reflective photoelectric sensor, transmission area, echo area or the grating that said angle mark member is a certain angle a kind of as the said intelligent electric runner hub of claim 2.
4, as the said intelligent electric runner hub of claim 2, it is characterized in that said sensor is a kind of of condenser, inductance type or eddy current sensor, said angle mark member is the plane in the certain angle zone that constitutes of medium or metal, or one section angle grid line or angle tooth.
5, as the said intelligent electric runner hub of claim 2, it is characterized in that said sensor is a Magnetic Sensor, said angle mark member is plane, angle grid line or the angle tooth in the certain angle zone of magnetic material formation.
6,, it is characterized in that also comprising being arranged on said electric control unit of taking turns in the hub shell as claim 1,2,3,4 or 5 described intelligent electric runner hubs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96109332A CN1049630C (en) | 1996-09-20 | 1996-09-20 | Intelligent type electricity-aid hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96109332A CN1049630C (en) | 1996-09-20 | 1996-09-20 | Intelligent type electricity-aid hub |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1148013A CN1148013A (en) | 1997-04-23 |
| CN1049630C true CN1049630C (en) | 2000-02-23 |
Family
ID=5120336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96109332A Expired - Fee Related CN1049630C (en) | 1996-09-20 | 1996-09-20 | Intelligent type electricity-aid hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1049630C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462500B (en) * | 2009-01-06 | 2012-07-04 | 丁宏 | Rear shaft accurate boosting signal acquisition control system of electric assisted bicycle |
| DE102022212947A1 (en) | 2022-12-01 | 2024-06-06 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hub unit of a bicycle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100389A (en) * | 1985-04-01 | 1985-12-20 | 机械工业部第八设计研究院 | Asynchronous motor torque---rotary speed property dynamic testing method and device |
| CN87211236U (en) * | 1987-09-28 | 1988-06-01 | 上海铁道学院 | High-precision torque and rotation speed transducer |
| US4968145A (en) * | 1987-04-28 | 1990-11-06 | Hamamatsu Photonics K.K. | Non-contacting revolving speed detecting apparatus |
| US5450915A (en) * | 1993-12-20 | 1995-09-19 | Li; I-Ho | Electric motor-in-wheel |
-
1996
- 1996-09-20 CN CN96109332A patent/CN1049630C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100389A (en) * | 1985-04-01 | 1985-12-20 | 机械工业部第八设计研究院 | Asynchronous motor torque---rotary speed property dynamic testing method and device |
| US4968145A (en) * | 1987-04-28 | 1990-11-06 | Hamamatsu Photonics K.K. | Non-contacting revolving speed detecting apparatus |
| CN87211236U (en) * | 1987-09-28 | 1988-06-01 | 上海铁道学院 | High-precision torque and rotation speed transducer |
| US5450915A (en) * | 1993-12-20 | 1995-09-19 | Li; I-Ho | Electric motor-in-wheel |
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| Publication number | Publication date |
|---|---|
| CN1148013A (en) | 1997-04-23 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |