CN1389359A - Electric-aid bicycle - Google Patents
Electric-aid bicycle Download PDFInfo
- Publication number
- CN1389359A CN1389359A CN02118381A CN02118381A CN1389359A CN 1389359 A CN1389359 A CN 1389359A CN 02118381 A CN02118381 A CN 02118381A CN 02118381 A CN02118381 A CN 02118381A CN 1389359 A CN1389359 A CN 1389359A
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- China
- Prior art keywords
- rotor core
- mentioned
- motor
- magnet
- stator
- Prior art date
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Classifications
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
- H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2791—Surface mounted magnets; Inset magnets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/20—Electric propulsion with power supplied within the vehicle using propulsion power generated by humans or animals
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/12—Bikes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/12—Motorcycles, Trikes; Quads; Scooters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Brushless Motors (AREA)
Abstract
A motor-assisted bicycle. A motor of a brush-less structure incorporated in the rear wheel has the following structure. The motor is provided with a rotor core 321 made of magnetic substance and integrated with a hub of the rear wheel and a stator 38 disposed opposite to the rotor core. The rotor core 321 is provided with a plurality of openings arranged in the circumferential direction of the rear wheel. In the openings, magnets 351 (N, S) are symmetrically arranged with a void 322D in the central area. In the magnet, voids 322E, 322F are formed in a part on the stator 38 side. A commutating pole part 323 is formed between the opening, respectively, by the rotor core. Among the magnetic fluxes of the magnets, the magnetic flux passing a bridge-like part 322BR between the voids 322D and 322E is contributed to the generation of torque, thereby reducing magnetic friction. Increase of torque can be obtained by action of the commutating pole.
Description
Technical field
The present invention relates to a kind of electrically assisted bicycle, particularly relate to a kind of like this electrically assisted bicycle, this electrically assisted bicycle makes the motor densification as the assistive drive source, and can make brisk operation become possibility by the magnetic friction minimizing that makes motor.
Background technology
Having the power that will be added in pedal by manpower and be legpower is delivered to the manpower drive-system of trailing wheel and can auxiliary power be appended to the electrically assisted bicycle of motor driven system of manpower drive-system corresponding to legpower known.The assistive drive source with motor driven system of disclosing in No. 2829808, Japanese Patent releasing bulletin is that groups of motors installs to the electrically assisted bicycle in the wheel hub of trailing wheel.In this electrically assisted bicycle, when descending etc. was assisted without motor, the revolution of magnetic pole stopped, and armature is kept its revolution along with the revolution of trailing wheel, so motor is as the electrical generator effect, by the regeneration action to the storage battery supplying electric current.
In above-mentioned electrically assisted bicycle, even when not regenerating action when walking at a high speed etc., because armature turns round with trailing wheel, so, produce magnetic friction.Generally speaking, when increasing the torque of motor, magnetic friction increases.Therefore, as only being to want to reduce magnetic friction, then the torque of motor can not be as desired big.Therefore, in the electrically assisted bicycle of above-mentioned communique,, can not avoid complex structureization and maximization, so hope has the method for improvement though realized the torque raising by speed reduction gearing is set.
Summary of the invention
The present invention makes in view of the above problems, and its purpose is to provide a kind of and does not lose big torque, can reduce magnetic friction and can make the electrically assisted bicycle of constructing simplification and miniaturization.
In order to achieve the above object, electrically assisted bicycle of the present invention is assembled the motor of the propulsive effort that is used for auxiliary manpower generation in wheel, it the 1st is characterised in that: said motor is the brushless structure, have and the rotor core of the wheel hub all-in-one-piece magnetic substance of above-mentioned wheel and the stator that disposes in opposite directions with this rotor core, at the axially open of above-mentioned rotor core formation towards above-mentioned wheel, a plurality of peristomes along the circumferential as prescribed arranged spaced of this wheel, make the circumferential two ends of above-mentioned wheel accommodate permanent magnet at above-mentioned peristome with having the space, between above-mentioned each peristome, form compensating pole by above-mentioned rotor core, simultaneously, the polarity of above-mentioned permanent magnet is different between the peristome of adjacency.
In addition, the of the present invention the 2nd is characterised in that: the permanent magnet that is contained in above-mentioned peristome has the space along the circumferential separate configuration of above-mentioned wheel and at central portion in this peristome, the part in the said stator side also forms the space between week in above-mentioned permanent magnet and above-mentioned peristome.
According to the 1st feature, can reduce leakage magnetic flux by the space that is formed at the permanent magnet two ends towards above-mentioned compensating pole, simultaneously, can increase and rotor core and stator between the magnetic flux of air gap orthogonal.Therefore, can increase the generation torque of motor.
In addition,, increase magnetic flux, and the magnetic circuit from the permanent magnet to the stator side is narrowed down, strong magnetic force is died down, reduce the excessive magnetic friction when walking at a high speed by the space of the part of the stator side of being located at permanent magnet by compensating pole according to the 2nd feature.
Description of drawings
Fig. 1 is the cross sectional drawing of motor that is used for the electrically assisted bicycle of an embodiment of the present invention.
Fig. 2 is the lateral plan of the electrically assisted bicycle of an embodiment of the present invention.
Fig. 3 is the main portion cross sectional drawing that comprises the manpower drive division of force testing device.
Fig. 4 is that the A-A of Fig. 3 is to view.
Fig. 5 is the main portion amplification profile diagram of Fig. 3.
Fig. 6 is the main portion cross sectional drawing with the face of motor drive shaft orthogonal.
Fig. 7 is the front elevation of the rotor core of maintenance permanent magnet.
Fig. 8 is the main portion enlarged drawing of rotor core.
Fig. 9 is the main portion enlarged drawing of the rotor core of the state of maintenance permanent magnet.
Figure 10 is the figure of the function that is used to illustrate the space part of being located at rotor core when electronic ().
Figure 11 is the figure of the function (during regeneration) that is used to illustrate the space part of being located at rotor core.
Figure 12 is the main portion enlarged drawing of Figure 10.
Figure 13 is the main portion enlarged drawing of Figure 11.
Figure 14 is the front elevation of rotor core of the motor of the 2nd form of implementation.
Figure 15 is the main portion enlarged drawing under the state of the peristome intercalation permanent magnet of Figure 14.
Figure 16 is the front elevation of rotor core of the motor of the 3rd form of implementation.
Figure 17 is the main portion enlarged drawing under the state of the peristome that permanent magnet is intercalated in Figure 16.
Figure 18 is the front elevation of rotor core of the motor of the 4th form of implementation.
Figure 19 is the main portion enlarged drawing under the state of the peristome intercalation permanent magnet of Figure 18.
Figure 20 is the front elevation of rotor core of the motor of the 5th form of implementation.
Figure 21 is the main portion enlarged drawing under the state of the peristome intercalation permanent magnet of Figure 20.
Figure 22 is the front elevation of rotor core of the motor of the 6th form of implementation.
Figure 23 is the main portion enlarged drawing under the state of the peristome intercalation permanent magnet of Figure 22.
Figure 24 is the main portion cross sectional drawing of face the 7th form of implementation and axle orthogonal motor.
Figure 25 is the control circuit figure of motor.
Figure 26 is the control time chart constantly that motor is shown.
Figure 27 is the front elevation of the motor of modified example.
Figure 28 is the main portion enlarged drawing of Figure 27.
The specific embodiment
A form of implementation of the present invention is described with reference to the accompanying drawings.Fig. 2 is the lateral plan of the electrically assisted bicycle with control setup of an embodiment of the present invention.The vehicle frame 1 of electrically assisted bicycle have the head pipe 2 that is positioned at vehicle body the place ahead, from the beginning manage 2 lower extending tubes 3 that extend towards the back lower place, be connected in back vent 4 that lower extending tube 3 extends towards the rear, reach the vehicle seat column 5 that erects towards the top bottom from lower extending tube 3.
But at head pipe 2 free rotaring ground supporting front forks 6.Front-wheel 7 is supported with axle in lower end at front fork 6, installs in the upper end of front fork 6 and turns to handgrip 8.Turning to handgrip 8 that brake rocker arm 9 is set, the drag-line 10 of drawing from brake rocker arm 9 is connected to the front-wheel brake 11 that is fixed in front fork 6.Equally, the brake cable pull that rear wheel brake is used also is located at and is turned to handgrip 8, but has omitted diagram.In addition, be provided for detecting the braking sensor (not shown) of the state of this brake rocker arm 9 at brake rocker arm 9.
The left and right sides stay 12 that is connected to vehicle seat column 5 upper ends extends towards the back lower place, nearby engages with back vent 4 in the lower end.Engaging back vent 4 and the member supporting trailing wheel 13 that stay 12 forms, in addition, be supported on above-mentioned member ground is provided as auxiliary power source on the axle identical with the wheel hub of trailing wheel 13 motor 14.As motor 14, be preferably the three-phase brushless motor of high torque (HT), low friction.The concrete structure and the control of this motor 14 will be explained below.
The upper end that is installed in to heavens at vehicle seat column 5 adjustable car load seats 15 has the bolster 16 of vehicle seat 15.To be arranged between vehicle seat column 5 and the trailing wheel 13 to the storage battery 17 of motor 14 supply capabilities below the vehicle seat 15.Storage battery 17 remains on the carriage 18 that is fixed in vehicle seat column 5.At carriage 18 power supply 19 is set, this power supply 19 simultaneously, is connected to the electrode of storage battery 17 by the not shown motor 14 that is wired to.The top of storage battery 17 by by with 20 and the connector supporting that constitutes of fastener 21 in vehicle seat column 5.
Below, the force testing device that is installed on crank shaft 22 is described.Fig. 3 is the cross sectional drawing of crank shaft 22 peripheries, and Fig. 4 is that the A-A of Fig. 3 is to view.Screw-in covers 101L, 101R at the two ends of the support tube 100 that is fixed in lower extending tube 3, is being formed at difference intercalation ball bearing of main shaft 102L, 204R between the step that covers 101L, 101R and crank shaft 22, but free rotaring ground supporting crank shaft 22.
End is by the nut 103C difference fixed crank 23 (right side only is shown) that is suitable for bolt 103B about crank shaft 22.The fixing inner ring 105 of mono-directional overrun clutch 104 between crank 23 and support tube 100.But the periphery at inner ring 105 is passed through sleeve 105A free rotaring ground supporting drive sprocket 25.The axial direction position of drive sprocket 25 is by nut 106A and plate 106B restriction.
Be wholely set lid 107 at drive sprocket 25, at the spatial allocation driver plate 108 that centers on by these drive sprockets 25 and lid 107.Driver plate 108 relative drive sprockets 25 are coaxial, and on the gyratory directions that with crank shaft 22 is axle, allow mutually scheduled volume skew supported.
Cross drive sprocket 25 and driver plate 108 a plurality of (being 6 here) hole 109 is set, accommodate compression coil spring 110 respectively in the inboard in this hole 109.When the skew that produces mutually 108 of drive sprocket 25 and driver plates towards gyratory directions, compression coil spring 110 relativity shifts produce resistance ground effect.
Week forms the ratchet 111 as the outer ring of mono-directional overrun clutch 104 in the wheel hub of driver plate 108, this ratchet 111 be supported on above-mentioned inner ring 105 and engage towards radiating the ratchet 113 that direction applies elastic force by spring 122.Be provided for antisoiling cover 114 at mono-directional overrun clutch 104.
Lug boss 115 engaging hole engaged 116 of the legpower transmission usefulness that is fixed in legpower transmission ring 124 are set at driver plate 108.Be provided for hole 117 that lug boss 115 is engaged with conjugate foramen 116 at drive sprocket 25, lug boss 115 connects these holes 117 and is coupled to conjugate foramen 116.
Is the Sensor section (pedaling force sensor) 47 that lower extending tube 3 sides are installed force testing device at drive sprocket 25 by vehicle body.Pedaling force sensor 47 has the sensor body that is used to form magnetic loop 121 that the outer ring 120 that is fixed in drive sprocket 25 and relative this outer ring 120 can be provided with freely to rotate.
Fig. 5 is the amplification profile diagram of sensor body 121.With above-mentioned crank shaft 22 coil 125 is set with one heart, is provided with axial both sides that are disposed at this coil 125 and pair of core 126A, the 126B that stretches out towards coil 125 peripheral direction.The 1st inductor 127 and the 2nd inductor 128 of ring-type are set between above-mentioned 126A unshakable in one's determination, 126B in addition.The 1st inductor 127 and the 2nd inductor 128 can produce displacement mutually in a circumferential direction corresponding to the legpower that transmits from legpower transmission ring 124, are changed the overlapped quantitative changeization of the part between 126A unshakable in one's determination, 126B by this displacement.As a result, when switching in coil 125, the magnetic flux that comprises the magnetic loop of 126A unshakable in one's determination, 126B and sleeve unshakable in one's determination 129 and the 1st inductor 127 and the 2nd inductor 128 changes corresponding to legpower.Therefore, thus can change and detect legpower by detecting inductance as the coil 125 of the function of this magnetic flux.In Fig. 5, symbol 130,131 is the supporting member of sensor body 121, and symbol 132 is a bearing, the lead of symbol 133 for drawing from coil 125.
Above-mentioned pedaling force sensor has carried out more detailed explanation at the applicant's the specification sheets in first to file (the flat 11-251870 of Japanese patent application number).Pedaling force sensor is not limited to have the occasion of above-mentioned structure, also can use known sensor.
Fig. 1 is the cross sectional drawing of motor 14.Be incorporated with the cylinder 30 of change-speed box by axle 31 supportings at the plate 29 that stretches out towards the rear from the junction surface of the lower end of the rear end of back vent 4 and stay 12.Periphery at cylinder 30 cooperates wheel hub 32.Wheel hub 32 is for having the ring bodies of inner core and urceolus, and the inner peripheral surface contact of inner core is at cylinder 30 outer peripheral faces.The connecting panels 33 that stretch out from cylinder 30 are fixed by bolt 34 in side at wheel hub 32.The neodium magnet 35 that the configuration of predetermined distance ground constitutes the rotor-side magnetic pole of motor 14 that separates in interior week at the urceolus of wheel hub 32.It is the rotor core that urceolus constitutes holding magnet 35.
At the periphery fitted bearing 36 of the inner core of wheel hub 32, cooperate stator back plate 37 in the periphery of this bearing 36.At the periphery configuration stator 38 of stator back plate 37, install by bolt 40.Make stator 38 and rotor core is the urceolus configuration of wheel hub 32 with having the regulation slight gap, installs around three-phase coil 39 at this stator 38.
In the side of stator back plate 37 optical sensor 41 is set.Optical sensor 41 cuts off light path, result, output pulse waveform signal intermittently by the annular component 42 of being located at this wheel hub 32 when wheel hub 32 revolutions.Annular component 42 can cut off optical sensor 41 intermittently when revolution light path ground has regular rectangular teeth shape.Detect position signal according to above-mentioned pulse waveform signal as the wheel hub 32 of rotor.Optical sensor 41 is arranged at 3 positions mutually corresponding to each of motor 14, works as the magnetic pole sensor and the rotary sensor of motor 14.
In addition, control circuit board 43 is set in the side of stator back plate 37, according to as the position signal of the optical sensor 41 of magnetic pole sensor to the control of switching on of above-mentioned three-phase coil 39.Control elements such as CPU and FET are installed on this control circuit board 43.And control circuit board 43 is integrated with the installation base plate of optical sensor 41 usefulness.
Wheel rim bonded assembly spoke 44 at the fixing and not shown trailing wheel of the periphery of wheel hub 32.In addition, by bolt 45 analog brackets 46, carriage 46 is by the plate 29 of not shown bolted joint to above-mentioned vehicle frame at stator back plate 37 and the opposition sides sides that above-mentioned control circuit board 43 grades are installed.
At wheel hub 32 hole that transparent resin (transparent glasses lens) 32A embeds is set, the hole that transparent glasses lens 37B embeds is set similarly at the stationary housings 37A that is fixed in stator back plate 37.These transparent glasses lens 32A and 37B make can see motor 14 inside from the outside, so, can obtain special aesthetic, simultaneously, can partly form wheel hub 32 and stationary housings 37A, thereby obtain the effect of expendable weight by resin.
Like this, be provided with by with the stator of axle 31 arranged coaxial of trailing wheel 13 and the three-phase brushless motor 14 that rotor constitutes, produce the auxiliary power that appends to the manpower that transmits by chain 17 and driven sprocket 26.Motor 14 also can be arranged on front-wheel certainly.
Fig. 6 is the main portion cross sectional drawing on motor 14 and faces axle 31 orthogonals, and Fig. 7 is the front elevation of the rotor core of holding magnet 35, and Fig. 8 is the main portion enlarged drawing of rotor core, and Fig. 9 is the main portion enlarged drawing of the rotor core of holding magnet state.The motor 14 of this form of implementation constitutes by stator 38 with as the wheel hub 32 around the rotating outer rotor of these stator 38 peripheries as described above.
The rotor core 321 that keeps above-mentioned magnet 35 in the form of a ring, intercalation is to the interior week of the urceolus portion of outer rotor 32.Rotor core 321 constitutes by stacked silicon steel thin slice, by 30 ° of intervals the peristome at totally 12 places (grooving) 322 is set along its circumferencial direction.The magnet 35 that is intercalated in peristome 322 constitutes the alternate configurations N utmost point (35N) and the S utmost point (35S) by ferrite.Work as pole-supplying part 323 between each peristome 322 of adjacency.Magnet 35 as Fig. 6, as shown in Figure 9, being central portion is the section type drum type section shape of heavy wall (convexity).
In addition, stator 38 is same with rotor core 321, constitutes by stacked silicon plate, comprises stator core 381 and stator salient poles 382.In each stator salient poles 382 with one pole centralized system coiling stator winding 383 (corresponding) with three-phase coil 39.
The section form of the shape of peristome 322 and magnet 35 is inequality, magnet 35 is being inserted under the state of peristome 322, form the 1st space 322A in the both sides along circumferencial direction of each magnet 35, in addition, stator 38 sides at the both ends of each magnet 35 form the 2nd space 322B (with reference to Fig. 6, Fig. 9).
Below, with reference to Figure 10, Figure 11 explanation be formed at and magnet 35 between the effect of each space part 322A, 322B of peristome 322.Figure 10 is the figure that illustrates from the magnetic flux distribution of storage battery 17 when motor 14 is powered, and Figure 11 is the figure that the magnetic flux distribution when making motor 14 regenerate action is shown.
When by above-mentioned control basal plate 43 from storage battery 17 when each stator winding 383 is supplied with exciting currents, as shown in Figure 10, it is peripheral direction that the magnetic line of force that the stator salient poles 382N that becomes the N utmost point from excitation produces towards the radiation direction leads to the back side from the stator-side surface of S utmost point magnet 35S, its major part is via the 32B of urceolus portion and the pole-supplying part 323 of wheel hub (outer rotor) 32, is that stator salient poles 382S, the stator core 381 of the S utmost point turns back to the stator salient poles 382N that above-mentioned excitation is the N utmost point via the excitation of adjacency.
At this moment, owing to form the 1st space 322A, so the leakage magnetic flux from the sidepiece of each magnet 35 towards pole-supplying part 323 reduces in the both sides along the circumferential direction of magnet 35, the major part of magnetic line of force is led to the 32B of urceolus portion of outer rotor 32 from magnet 35, arrives stators 38 sides via pole-supplying part 323 then.As a result, the vertical composition of the magnetic flux by the air gap between rotor core 321 and the stator salient poles 382 increases, so, compare with the occasion that the 1st space 322A is not set, can make and torque takes place increase.In addition, because the magnetic circuit of all sides is limited by the 2nd space 322B in the rotor core 321, so the leakage magnetic flux by all sides in the rotor core 321 also reduces.
Figure 12 amplifies the scheme drawing that the magnetic line of force among Figure 10 is shown.As shown in figure 12, reduce interior all 324 amounts (amount of dotted line) of leaking along rotor core 321 towards the magnetic flux B1 of stator salient poles 382S direction by the side's of the 2nd space 322B 3220B from pole-supplying part 323, magnetic flux B1 is guided to stator salient poles 382S effectively.In addition, the opposing party of the 2nd space 322B (3221B) prevents to drain to pole-supplying part 323 sides from interior all 324 the magnetic flux B2 of magnet 35N by rotor core 321, guides magnetic flux B2 effectively towards stator salient poles 382S.As a result, the vertical composition of the magnetic flux by the air gap between rotor core 321 and the stator 38 further increases, and the driving torque of motor is further increased.
On the other hand, when motor 14 produced the regeneration action, as shown in figure 11, the magnetic flux that produces from each magnet 35 formed closed magnetic circuit with stator salient poles and stator core, so, can be at the rotating speed corresponding generation current of stator winding 383 generations with rotor.
The voltage stabilizer that the regenerative voltage of motor 14 is restricted to predetermined value is set, when regenerative voltage reaches the adjustment voltage (for example 14.5V) of this voltage stabilizer, can makes the ground connection side short circuit among the power supply EFT of output control circuit (aftermentioned) of motor 14.Like this, short circuit current is flowed in each stator winding 383 with lagging phase, reduce, increase the leakage magnetic flux that is connected between the adjacent magnets 35, reduce the magnetic friction of motor 14 thereby make by the magnetic line of force in the stator 38.
Figure 13 is for amplifying the scheme drawing of the magnetic line of force that Figure 11 is shown.As shown in figure 13, between magnet 35S, the 35N of adjacency, produce magnetic flux B3 via the outer circumference portion 325 of rotor core 321, via the magnetic flux B4 of the pole-supplying part 323 of rotor core 321, by rotor core 321 interior perimembranous 324 magnetic flux B5, reach magnetic flux B6 via interior perimembranous 324, air gap and the stator salient poles 382N of rotor core 321.
As described above, according to this form of implementation, motor 14 has pole-supplying part 323 35 of the magnet that remains in rotor core 321, between magnet 35 in motor 14 and the rotor core 321 space 322A, 322B are set, so, the leakage magnetic flux that the magnet of adjacency is 35 reduces, and the magnetic flux of the air gap portion orthogonal between rotor core 321 and the stator 38 increases.Therefore, the torque that motor 14 is produced increases, and can prevent that when being regenerated by motor 14 magnetic friction from increasing.
Figure 14 is the front elevation of the rotor core of the present invention's the 2nd form of implementation, and Figure 15 is the main portion enlarged drawing of the rotor core of holding magnet, the identical or equal part of the symbolic representation identical with Fig. 7, Fig. 9.In the 2nd form of implementation, the peristome 322 of rotor core 321 is trapezoidal substantially, the rectangular magnet 35 of intercalation in peristome 322.Be formed for preventing the 1st space 322A at the short brink of magnet 35 in the leakage magnetic flux of 35 of the magnet of adjacency with oblong section.In addition, form the 2nd space 322B in the stator side bight of magnet 35 with the magnetic circuit of restriction along interior all sides of rotor core 321.
Figure 16 is the front elevation of the rotor core of the 3rd form of implementation of the present invention, and Figure 17 is the main portion enlarged drawing of the rotor core of holding magnet, the identical or equal part of the symbolic representation identical with Fig. 7, Fig. 9.In the 3rd form of implementation, the peristome 322 of rotor core 321 is the drum type of abnormity, the magnet 35 of intercalation drum type in peristome 322 (middle convex).Both sides at the magnet 35 of the circumferencial direction of rotor core 321 form the 1st space 322A bigger than above-mentioned each form of implementation, with the leakage magnetic flux of 35 of the magnet that prevent adjacency.In addition, form the magnetic circuit of the 2nd space 322B in the stator side bight of magnet 35 with restriction all sides in the rotor core 321.
Figure 18 is the front elevation of the rotor core of the 4th form of implementation of the present invention, and Figure 19 is the main portion enlarged drawing of the rotor core of holding magnet, the identical or equal part of the symbolic representation identical with Fig. 7, Fig. 9.In the 4th form of implementation, the peristome of rotor core 321 322 is for being provided with the abnormity of otch in the both sides of drum type portion, interrupts the magnet 35 that face is a drum type in that rotor core 321 is embedded.Be formed for the 1st space 322A with the leakage magnetic flux of 35 of the magnet that prevent adjacency in the both sides of the magnet 35 of the circumferencial direction of rotor core 321.In addition, form the magnetic circuit of the 2nd space 322B in the stator side bight of magnet 35 with restriction all sides in the rotor core 321.In the 4th form of implementation, the 1st space 322A and the 2nd space 322B are integral, and the size of the 2nd space 322B is set greatlyyer.
Figure 20 is the front elevation of the rotor core of the 5th form of implementation of the present invention, and Figure 21 is the main portion enlarged drawing of the rotor core 321 of holding magnet, the identical or equal part of the symbolic representation identical with Fig. 7, Fig. 9.In the 5th form of implementation, the peristome 322 of rotor core 321 is the drum type of abnormity, interrupts the magnet 35 that face is a drum type in that peristome 322 is embedded.Both sides at the magnet 35 of the circumferencial direction of rotor core 321 form the 1st space 322A, with the leakage magnetic flux of 35 of the magnet that prevent adjacency.
In addition, in the 5th form of implementation,, form the otch 322C that extends towards two bights of magnet 35 from interior all sides of rotor core 321 as substituting of the 2nd space 322B.This otch 322C is used to limit the magnetic circuit along all sides in the rotor core 321, plays the same effect with the 2nd space 322B.
Figure 22 is the front elevation of the rotor core of the 6th form of implementation of the present invention, and Figure 23 is the main portion enlarged drawing of the rotor core of holding magnet, the identical or equal part of the symbolic representation identical with Fig. 7, Fig. 9.In the 6th form of implementation, the peristome 322 of rotor core 321 is the drum type of abnormity, interrupts the magnet 35 that face is a drum type in that peristome 322 is embedded.Both sides at the magnet 35 of the circumferencial direction of rotor core 321 form the 1st space 322A, with the leakage magnetic flux of 35 of the magnet that prevent adjacency.In addition, be formed for limiting the 2nd space 322B of the magnetic circuit of all sides in the rotor core 321 in the stator side bight of magnet 35.
Figure 24 is the main portion front cross sectional drawing of the motor 14 of the 7th form of implementation of the present invention, the identical or equal part of the symbolic representation identical with Fig. 6.In the 7th form of implementation, the magnet that remains in rotor core 321 is separated into the configuration of 2 parts.That is, as 1 group, organize (8 groups) by 45 ° of arranged spaced along the circumferencial direction of rotor core 321 with 2 of the magnet of homopolarity more.For example, in Figure 24, be conceived to magnet 351S, 252S.Section form is that rectangular 2 magnet 351S, 253S are the identical utmost point (the S utmost point), all is neodium magnet.The 3rd space 322D is set between two magnet 351S and 352S, simultaneously, forms the 4th space 322E, 322F respectively in stator 38 sides of two magnet 351S and 352S.The 3rd space 322D side of magnet 351S and magnet 352S is towards the periphery bias of rotor core 321.And it is identical with above-mentioned each form of implementation between many each magnet of group pole-supplying part 323 to be set.
The following describes the state of formation of the magnetic flux of above-mentioned formation.The magnetic force of neodium magnet is very strong, so, in order to reduce magnetic friction, make from the magnetic flux by the bridge shape part 322BR between the 3rd space 322D and the 4th space 322E in the magnetic flux of each magnet and produce torque.For example, from the magnetic flux B10 of N utmost point magnet 351N and 352N by bridge portion 322BR, and air gap arrival stator salient poles 382Sa, 382Sb by 38 of rotor core 321 and stators.Then, arrive S utmost point magnet 351S, 352S through stator salient poles 382N from bridge portion 322BR.Further, connect S utmost point magnet 351S, 352S and lead to the magnetic flux B11 at the back side (outer circumferential side of rotor core 321) through pole-supplying part 323 arrival stator salient poles 382Sb.Part among the magnetic flux B11 at perforation S utmost point magnet 351S, the 352S arrival back side becomes towards the leakage magnetic flux (shown by dashed lines) of the N utmost point magnet 351N of adjacency.
Like this, flow into the magnetic line of force of stator 38 sides by air gap by surround the bridge portion 322BR of both sides by the space, so magnetic flux is less from N utmost point magnet 351N, 352N.For this reason, when motor does not drive the high-speed cruising that does not yet carry out actification, can reduce magnetic friction.On the other hand, when switching in motor 14, B11 increases torque by magnetic flux (compensating pole magnetic flux).
In addition, when regeneration output, as described above, the magnetic flux that each magnet produces forms closed magnetic circuit with stator salient poles and stator core, so, can produce identical with each form of implementation of fwd at stator winding 383 with the corresponding generation current this point of rotor speed.
Figure 25 is the output control circuit figure of motor 14, and Figure 26 is the figure that the energising moment and energising work wave are shown.As shown in figure 25, full-wave rectifier 71 has FET (being generally individual on-off element) 71a, 71b, 71c, 71d, 71e, the 71f that is connected to threephase stator coil 39, and this FET71a-71f is by actuator 72 control of switching on.The energising work wave is set by work wave configuration part 73 according to the indication of supplying with from motor torque calculating part 64, is input to actuator 72.The actual walking resistance corresponding driving power ground that motor torque calculating part 64 for example can produce with vehicle calculates motor 14 desired torques according to the output of the speed of a motor vehicle and pedaling force sensor 47 and the rotating speed of motor 14 etc.An example of the method for calculating that requires motor torque that is undertaken by motor torque calculating part 64 is recorded in the specification sheets of patent application (patent application 2001-55399 number) of control setup of the previous electrically assisted bicycle that proposes of the applicant.
In the driving that applies auxiliary power constantly, supply with the energising work wave from work wave configuration part 73 to actuator 72, actuator 72 makes the FET71a-71f conducting according to this energising work wave, from storage battery 17 supplying electric currents.In the occasion that produces regenerative current, in the regeneration moment of the electric angle that is offset 180 degree from above-mentioned driving constantly, supply with the energising work waves from work wave configuration part 73 to actuator 72, actuator 72 is according to this energising work wave conducting FET71a-71f.When pressing regeneration constantly with the FET71a-71f conducting, the electric current that results from stator coil 39 is by the FET71a-71f rectification, to storage battery 17 power supplies.
Be for driving constantly or be the regeneration moment, judging according to the motor torque T that requires that supplies with from motor torque calculating part 64 by torque judging part 74.When the required value T of motor torque is timing, will switch on to constantly being set at drives constantly, when the required value T of motor torque when negative, will switch on is set at the regeneration moment constantly.
In Figure 26, the FET71a-71f angle that will switch on is set at the ground conductings of electric angle 120 degree.This illustrates and drives energising constantly constantly, and in regeneration constantly, FET71a, 71c, the 71e that makes upper side staggers from this drivings and 180 spend electric angles constantly.
In above-mentioned each form of implementation, illustrated to make motor 14 the be outer-rotor type i.e. occasion of outer transition, but the invention is not restricted to this, for the inboard at stator make rotor rotating in the motor of transition suitable too.
Figure 27 illustrates the front elevation that motor 14 is deformed into the example of interior transition, and main portion only is shown among the figure.Motor 14 constitutes by the stator 90 of general cylindrical shape with at the rotor 80 of the inboard rotating general cylindrical of this stator 90.Rotor 80 and stator 90 are all stacked and constitute by the silicon steel thin slice.
At the stator salient poles 91 of said stator 90 stator winding 92 of reeling respectively.On above-mentioned rotor 80, section is roughly the circular-arc permanent magnet 85 that is made of the neodymium based material towards axially being inserted in 12 peristomes 811 that circumferencial direction forms at interval with 30 degree.The protrusion side of magnet 85 is towards the configuration of the center of gyration ground of rotor 80.Work as pole-supplying part 813 between each adjacent peristome 811.
In this modified example, the section form of the shape of above-mentioned peristome 811 and magnet 85 is also inequality, magnet 85 is being inserted under the state of peristome 811, forms space 812 in the both sides along circumferencial direction of each magnet 85.
According to this formation, when from storage battery 17 when each stator winding 92 is supplied with exciting currents, as amplification among Figure 28 illustrates, the magnetic line of force that becomes the stator salient poles 91 (N) of the N utmost point to produce from excitation leads to the back side (outer circumferential side) from the stator-side surface of S utmost point magnet 85S, its major part is via pole-supplying part 813, and become the stator salient poles 91 (S) of the S utmost point via adjacent excitation, turn back to the stator salient poles 91 (N) that above-mentioned excitation becomes the N utmost point.
In this modified example, each magnet 85 form space 812 along the both sides of circumferencial direction, reduce to the leakage magnetic flux of pole-supplying part 813 from the sidepiece of each magnet 85, so the major part of magnetic line of force arrives stators 90 sides from each magnet 85 via pole-supplying part 813.As a result, the vertical composition of the magnetic flux by the air gap between rotor 80 and the stator 90 increases, and compares with the occasion that above-mentioned space 812 is not set, and can increase driving torque.
On the other hand, when motor 14 is regenerated when action, because the magnetic flux that takes place from each magnet 85 forms closed magnetic circuit with the core part of stator salient poles 91 and stator 90, so, can produce the corresponding generation current of rotating speed with rotor 80 at stator winding.
In addition, magnet 85 adopts the strong neodymium based magnet of magnetic force, and, protruding magnet 85 to center of gyration ground layout circle arcuation, thereby the magnetic force that directly leads to stator 90 from the outer surface of magnet 85 is reduced, so, the friction force when working can be reduced significantly as electrical generator.
By above explanation as can be known, according to the 1st aspect of the present invention or the 2nd aspect, because the part of the wheel hub of trailing wheel forms the rotor core of motor, so, can be by motor direct drive trailing wheel, and can when car retardation, charge by the power supply of actification to motor.And motor is a brushless structure, can be by the enough torques of effect generation in the space between its rotor core of the compensating pole between the permanent magnet that is contained in the rotor core and permanent magnet and maintenance.Therefore, do not use the structure of complexity such as speed reduction gearing to drive trailing wheel by motor.
Particularly according to the 2nd aspect, when motor does not drive the high-speed cruising that does not yet carry out actification, by reducing magnetic friction by the leakage magnetic flux between rotor core, so, carry out the friction of motor when not driving in the time of can when utilizing the big torque characteristics of brushless motor, reducing high-speed cruising.
Claims (2)
1. electrically assisted bicycle, assembling is used for the motor of the propulsive effort that auxiliary manpower produces in wheel; It is characterized in that:
Said motor is a brushless structure, has and the rotor core of the wheel hub all-in-one-piece magnetic substance of above-mentioned wheel and the stator that disposes in opposite directions with this rotor core;
Form axially open in above-mentioned rotor core towards above-mentioned wheel, along a plurality of peristomes of the circumferential as prescribed arranged spaced of this wheel;
Permanent magnet is accommodated at the circumferential two ends that are housed in above-mentioned wheel at above-mentioned peristome with having the space;
Between above-mentioned each peristome, form compensating pole by above-mentioned rotor core, simultaneously,
The polarity of above-mentioned permanent magnet is different between the peristome of adjacency.
2. electrically assisted bicycle, assembling is used for the motor of the propulsive effort that auxiliary manpower produces in wheel; It is characterized in that:
Said motor is a brushless structure, has and the rotor core of the wheel hub all-in-one-piece magnetic substance of above-mentioned wheel and the stator that disposes in opposite directions with this rotor core;
Form axially open in above-mentioned rotor core towards above-mentioned wheel, along a plurality of peristomes of the circumferential as prescribed arranged spaced of this wheel;
Accommodate permanent magnet at above-mentioned peristome, this permanent magnet has the space along the circumferential separate configuration of above-mentioned wheel and at central portion, also has the space in the part of said stator side;
Between above-mentioned each peristome, form compensating pole by above-mentioned rotor core, simultaneously,
The polarity of above-mentioned permanent magnet is different between the peristome of adjacency.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001164280A JP4662220B2 (en) | 2001-05-31 | 2001-05-31 | Electric assist bicycle |
| JP164280/2001 | 2001-05-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1389359A true CN1389359A (en) | 2003-01-08 |
| CN1251900C CN1251900C (en) | 2006-04-19 |
Family
ID=19007125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021183813A Expired - Fee Related CN1251900C (en) | 2001-05-31 | 2002-04-26 | Electric-aid bicycle |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4662220B2 (en) |
| CN (1) | CN1251900C (en) |
| DE (1) | DE10219332B4 (en) |
| NL (1) | NL1020257C2 (en) |
| TW (1) | TW530773U (en) |
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| CN100380787C (en) * | 2003-10-10 | 2008-04-09 | 日产自动车株式会社 | Magnetic circuit structure for rotary electric machine |
| CN101826822B (en) * | 2009-03-05 | 2013-01-02 | 叶贞枝 | Power mechanism with low energy consumption |
| CN104097737A (en) * | 2013-04-10 | 2014-10-15 | 株式会社岛野 | Bicycle drive unit |
| CN104126266A (en) * | 2012-02-20 | 2014-10-29 | 利莱森玛电机公司 | Rotor of rotating machine with flux concentration |
| CN104185591A (en) * | 2012-04-04 | 2014-12-03 | 罗伯特·博世有限公司 | Electrically driven two-wheeled vehicle |
| CN105846568A (en) * | 2016-03-23 | 2016-08-10 | 东南大学 | Modularized rotor of outer rotor hub motor |
| CN104158320B (en) * | 2013-05-14 | 2017-07-07 | 雅马哈发动机株式会社 | Saddle-type electric vehicle drive mechanism and Saddle-type electric vehicle |
| CN113306665A (en) * | 2021-06-08 | 2021-08-27 | 范文睿 | Magnetic power-assisted rotating shaft driver |
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| JP3638944B1 (en) | 2004-02-04 | 2005-04-13 | 山洋電気株式会社 | Method for determining pole arc ratio of rotary motor with built-in permanent magnet and rotary motor with built-in permanent magnet |
| FR2891801B1 (en) * | 2005-10-10 | 2009-05-15 | Jjg Partenaires Eurl Sarl | ELECTRIC BIKE |
| JP5479676B2 (en) * | 2007-11-29 | 2014-04-23 | 株式会社クリーンクラフト | Outer rotor motor |
| FR2949028B1 (en) * | 2009-08-04 | 2014-06-27 | Daniel Giudice | MOTOR ELECTRIC WHEEL ADAPTED TO A ROLLING VEHICLE DIMMER. |
| JP2011116298A (en) * | 2009-12-07 | 2011-06-16 | Mitsuba Corp | Power unit of electric two-wheeler, and electric two-wheeler |
| EP2586694A4 (en) * | 2010-06-23 | 2018-01-10 | NTN Corporation | Electrically assisted bicycle |
| JP2013126859A (en) * | 2011-11-15 | 2013-06-27 | Yamaha Motor Co Ltd | Wheel for saddle-ride type electric vehicle, wheel-driving electric motor for saddle-ride type electric vehicle, and saddle-ride type electric vehicle |
| DE102013202011A1 (en) * | 2013-02-07 | 2014-08-07 | Robert Bosch Gmbh | Drive motor for the gearless drive of a two-wheeler |
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| KR101514822B1 (en) * | 2013-06-21 | 2015-04-23 | 한국파워트레인 주식회사 | Brush Less DC Motor |
| WO2015037127A1 (en) * | 2013-09-13 | 2015-03-19 | 三菱電機株式会社 | Permanent magnet-embedded electric motor, compressor, and refrigerating and air-conditioning device |
| CN103963908A (en) * | 2014-04-29 | 2014-08-06 | 高伯强 | Energy-saving electric bike |
| US10333362B2 (en) | 2014-10-15 | 2019-06-25 | Accelerated Systmes Inc. | Internal permanent magnet motor with an outer rotor |
| TWI646016B (en) * | 2016-05-31 | 2019-01-01 | 廖和宥 | A bicycle drive unit |
| JP2020014303A (en) * | 2018-07-17 | 2020-01-23 | 株式会社ｅ−Ｇｌｅ | Outer rotor type motor and electric vehicle |
| JP7156018B2 (en) * | 2018-12-27 | 2022-10-19 | 株式会社デンソー | Rotating electric machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4418454A1 (en) * | 1994-05-26 | 1995-11-30 | Siemens Ag | Synchronous machine external rotor design |
| JP3308828B2 (en) * | 1996-10-18 | 2002-07-29 | 株式会社日立製作所 | Permanent magnet rotating electric machine and electric vehicle using the same |
| JP3301962B2 (en) * | 1997-04-14 | 2002-07-15 | 三洋電機株式会社 | Motor rotor |
| JPH1149061A (en) * | 1997-08-07 | 1999-02-23 | Sony Corp | Bicycle with auxiliary power |
| US6093985A (en) * | 1999-04-07 | 2000-07-25 | Chen; Tun-I | Non-brush type direct current motor for electric bicycle |
| EP1104077B1 (en) * | 1999-11-19 | 2012-12-26 | Honda Giken Kogyo Kabushiki Kaisha | Permanent magnet rotary electric motor |
-
2001
- 2001-05-31 JP JP2001164280A patent/JP4662220B2/en not_active Expired - Fee Related
-
2002
- 2002-03-26 NL NL1020257A patent/NL1020257C2/en not_active IP Right Cessation
- 2002-04-22 TW TW091205418U patent/TW530773U/en not_active IP Right Cessation
- 2002-04-26 CN CNB021183813A patent/CN1251900C/en not_active Expired - Fee Related
- 2002-04-30 DE DE10219332A patent/DE10219332B4/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100380787C (en) * | 2003-10-10 | 2008-04-09 | 日产自动车株式会社 | Magnetic circuit structure for rotary electric machine |
| CN101826822B (en) * | 2009-03-05 | 2013-01-02 | 叶贞枝 | Power mechanism with low energy consumption |
| CN104126266A (en) * | 2012-02-20 | 2014-10-29 | 利莱森玛电机公司 | Rotor of rotating machine with flux concentration |
| CN104185591A (en) * | 2012-04-04 | 2014-12-03 | 罗伯特·博世有限公司 | Electrically driven two-wheeled vehicle |
| CN104097737A (en) * | 2013-04-10 | 2014-10-15 | 株式会社岛野 | Bicycle drive unit |
| CN104097737B (en) * | 2013-04-10 | 2016-08-24 | 株式会社岛野 | Bicycle driving device |
| TWI597204B (en) * | 2013-04-10 | 2017-09-01 | 島野股份有限公司 | Bicycle drive unit |
| CN104158320B (en) * | 2013-05-14 | 2017-07-07 | 雅马哈发动机株式会社 | Saddle-type electric vehicle drive mechanism and Saddle-type electric vehicle |
| CN105846568A (en) * | 2016-03-23 | 2016-08-10 | 东南大学 | Modularized rotor of outer rotor hub motor |
| CN113306665A (en) * | 2021-06-08 | 2021-08-27 | 范文睿 | Magnetic power-assisted rotating shaft driver |
| CN113306665B (en) * | 2021-06-08 | 2023-04-14 | 范文睿 | Magnetic power-assisted rotating shaft driver |
Also Published As
| Publication number | Publication date |
|---|---|
| NL1020257C2 (en) | 2003-02-18 |
| NL1020257A1 (en) | 2002-12-03 |
| JP2002356190A (en) | 2002-12-10 |
| JP4662220B2 (en) | 2011-03-30 |
| CN1251900C (en) | 2006-04-19 |
| DE10219332B4 (en) | 2007-07-19 |
| DE10219332A1 (en) | 2002-12-12 |
| TW530773U (en) | 2003-05-01 |
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