CN206041731U - Disk does not have iron core direct current motor driven and has tooth in -wheel motor - Google Patents

Disk does not have iron core direct current motor driven and has tooth in -wheel motor Download PDF

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Publication number
CN206041731U
CN206041731U CN201620987270.0U CN201620987270U CN206041731U CN 206041731 U CN206041731 U CN 206041731U CN 201620987270 U CN201620987270 U CN 201620987270U CN 206041731 U CN206041731 U CN 206041731U
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motor
ring
wheel hub
iron core
gear
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眭华兴
眭重兴
高波
高峰
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眭华兴
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Abstract

The utility model discloses a disk does not have iron core direct current motor driven and has tooth in -wheel motor, including left end lid, right -hand member lid, main shaft and wheel hub, left end lid through first bearing cover on the main shaft, the right -hand member lid through second bearing cover on the main shaft, the left end lid covers with the right -hand member to be connected with wheel hub, the left end lid is connected with sun gear ring through the reduction gears, and sun gear ring fixes on the motor, drives sun gear ring through the motor and rotates to drive the left end lid through the reduction gears and rotate, thereby it rotates to drive wheel hub. The utility model discloses keeping leading to under the axle construction prerequisite, adopting the planetary gear mechanism two -stage to slow down, both guaranteeing the reliability of in -wheel motor structure, it does not have iron core direct current motor's high speed performance and obtains full play to enable the disk again, and the one -level is slowed down the part and has been adopted steel gear and engineering plastics gear engaged with form, has both guaranteed the reliability of reduction gears, can reduce the rotational noise effectively again.

Description

A kind of wheel hub motor with teeth of disc type iron core-free DC motor Driver
Technical field
The present invention relates to the wheel hub motor with teeth of disc type iron core-free DC motor Driver, belongs to electric motors.
Background technology
Existing electric bicycle, more using low speed wheel hub motor, has an advantage in that:Power of motor is big, and motor typically need not Safeguard, transmission efficiency, but as this motor has magnetic hysteresis resistance, weaken or even lose the work(of riding of electric bicycle Can, electric boosted type bicycle gradually gone on the development course of motorized easypro formula, its motor power and travel speed Remote super existing national standard.Motorized electric bicycle, vehicle accident take place frequently, it has also become a kind of society that need be solved is asked Topic.
There is magnetic hysteresis resistance for overcoming motor, the motor manufacturer with all directions motor as representative is proposed shaft type High speed wheel hub motor with teeth.The rated power of this motor meets existing national standards, and is combined with its pinion frame Mono-directional overrun clutch, efficiently solves impact of the magnetic hysteresis resistance of motor to riding.The driving of this wheel hub motor with teeth Motor is substantially exactly the low speed wheel hub motor that diameter is reduced, and its rotating speed is usually no more than 1500 revs/min, on stricti jurise To say that it is high-speed electric expreess locomotive be also not really, so employing the dead axle planetary gear reducing mechanism of primary speed-down, speed reducing ratio is usually 1: 4.3, wheel hub motor is poor to the adaptability of wheel footpath.
Both the above main flow motor, is Nd-Fe-B permanent-magnet D, with simple structure, reliable, small volume, Lightweight, rated efficiency is high, good speed adjustment features the advantages of, but due to the low speed characteristics of electric bicycle, actually riding In journey, motor often operates in inefficient interval, and the mileages of continuation of electric bicycle is not high, it is difficult to meet masses and raising is continued The consumption demand of mileage.
China Patent No. 201010247971.8 discloses a kind of ultrathin high-power direct current magnetoelectric motor, it is proposed that Yi Zhongyou Select the coil for being shaped as sector using the outer ring of flat enamel-covered wire coiling, be superimposed to form coil windings, Single-layer Windings around After making, fixed glue being coated on its surface and being fixed, winding is arranged in the groove of stator frame and by interior trim ring and external pressure Circle is fixed.Actual situation is, it is ensured that the outer ring of coil is shaped as sector, and the area of the triangular inner hole of coil needs enough Greatly, the number of turn of reduction winding, and so coil of coiling, stator disc low space utilization, magnetic field concentration are poor, are to reduce magnetic flux Loss, permanent magnet must have enough radical lengths, therefore the overlapping region very little of interior trim ring, outer trim ring and fan-shaped winding, only The coil windings that fixed glue is coated on surface are easy to damage of falling apart as clockwork feed under the situations such as vibration, heating. And adopt the coil of round conductor coiling, then need the round wire for selecting the less yield strength of line footpath low keep outer loop-shaped For sector, it is also not possible to produce powerful direct current permanent magnet motor.The heavy-duty motor of high current will necessarily be produced more Heat, it is desirable to have reliable heat sink conception, the invention employ high intensity, high rigidity, heat-resisting, resistance to punching resistance, aging-resistant work The stator frame of engineering plastics precision injection molding, its thermal conductivity coefficient typically only have 0.04W/mK, and the coil of flat wire coiling around Group requires that the air gap flux density of stator disc both sides is strictly equal, and the rotor disk fixed by two bearings at flat thin stator frame center is very Difficult meeting so high requirement, rotor disk slightly biases flat enamel wire coil and will generate heat, and the higher heat production of rotating speed is more Many, substantial amounts of heat is closed in rotor disk, cannot also be passed through stator frame made by engineering plastics and be dissipated, its technical scheme sheet Body just has significant deficiency.
China Patent No. 201010289645.3 discloses a kind of energy-saving hub motor, equally employs disc type iron core-free straight Stream motor, and using electric vehicle hub as rotor disk, directly by In-wheel motor driving electric motor car, the invention is also combined in wheel hub Version identical disc type iron core-free electromotor, recharges to accumulator for collecting the electric energy produced by vehicle braking, from And play the effect of energy-conservation.Substantially, the inductance value of disc type iron core-free direct current generator is less, belongs to the category of low-power machine, its Most prominent advantage is high rpm low torque and without magnetic hysteresis resistance, and the efficiency during slow-speed of revolution is very low, and to motor work(on market Rate requires the low speed sightseeing electric car of less 72V voltages, and its motor rated power has also required that 5000W, on electric vehicle hub The pitch circle of hub stud holes to rim bolt hole pitch circle between space be limited, arrange high-power in this limited space Disc type iron core-free direct current generator and disc type iron core-free electromotor cannot accomplish, moreover by the description of the invention, the energy-conservation The electric motor car of wheel hub motor can only install the solid tyre without the need for inflation.
Application number 201310033295.8 discloses a kind of disc type iron core-free permanent magnet DC motor, is the electricity that an axle is rotated Machine, its technical scheme for adopting is:The axial symmetry conical ring Circular Winding that coil windings are made up of multi-section circular arc, conical ring Tip forms two different internal diameter sizes near stator axle center, after the central axis trisection of axial symmetry conical ring, wherein bores The internal diameter at shape ring tip is 2/3rds of another internal diameter, and this Circular Winding, the space availability ratio of stator disc are very low, magnetic field collection Poly- property is worse, and " stator armature winding directly has winding to be molded using iron-free core structure " referred in scheme, also without realization Possibility, be to clear unordered winding outlet in injection moulding process, conforming product rate can be very low.The invention " annular around Interval setting hall magnetic sensor in group ", even more against the scheme of general knowledge, nine pins of three Hall elements need Concatenated by wire in the inter-air space of very little, its technology difficulty is very big, and is arranged on the Hall in the middle of Circular Winding Sensor, its metal pin can generate heat rapidly under action of alternating magnetic field, burn Hall element.
The patent No. 201310310431.3 discloses a kind of disc type iron core-free permanent-magnet brushless DC electric machine, employs and application A kind of number similar annulus winding of disc type iron core-free permanent magnet DC motor disclosed in 201310033295.8, which is away from shaft end Arc radius be proximate to 1.5-2 times of arc radius of shaft end, the arc radius of two stringcourse parts are remote from the circular arc of shaft end 3-5 times of radius, the space availability ratio of stator disc are very low, and magnetic field concentration is worse, and coil windings lack stopping means, It is difficult to displacement of the limiting coil in axial direction;The invention motor employs the disc type iron core-free unidirectional current that a kind of outer rotor case is rotated Machine, goal of the invention are indefinite, and the specific aim for arranging four O-ring seals is not strong, and motor lacks PTO and fixed dress Put, on motor shaft, also seemingly have improper using two kinds of totally different bearings of specification, motor starts using without position hall position sensors When motor shake hysteresis phenomenon occurs.
The content of the invention
Goal of the invention:In order to overcome the deficiencies in the prior art, the present invention to provide a kind of disc type iron core-free unidirectional current The wheel hub motor with teeth that machine drives, after the wheel hub motor with teeth using the disc type iron core-free DC motor Driver of the present invention, voluntarily Car still scrunches function of riding with good, and the mileages of continuation under pure driven by power situation, than presently commercially available electrical salf-walking Car has increased significantly.
Technical scheme:For solve above-mentioned technical problem, the present invention a kind of disc type iron core-free DC motor Driver it is with teeth Wheel hub motor, including left end cap, right end cap, main shaft and wheel hub, the left end cap is enclosed within main shaft by clutch shaft bearing, right end cap It is enclosed within main shaft by second bearing, left end cap and right end cap are connected with wheel hub, the left end cap passes through reducing gear and the sun Wheel gear ring connection, sun gear gear ring are fixed on motor, drive solar wheeling tooth circle to rotate by motor, so as to pass through reducing gear Left end cap is driven to rotate, so as to drive hub rotation;The reducing gear includes planet carrier, several the first row star-wheels, some Individual second planetary gear and centre wheel, the first row star-wheel are engaged with sun gear gear ring, and the first row star-wheel and the second planetary gear are logical Cross rotary shaft coaxially connected, rotary shaft is installed in planet carrier by 3rd bearing, and planet carrier is enclosed within main shaft, the second planetary gear Engage with the centre wheel being fixed on left end cap.
Preferably, the sun gear gear ring includes the gear teeth and the installing ring coaxial with the gear teeth, installing ring is fixed on motor On, oil shield is cased with outside installing ring, oil shield is tightly connected with left end cap, and reducing gear is wrapped in left end cap and oil shield shape Into space in.
Preferably, the planet carrier is sleeved on main shaft, heart hole is provided with keyway wherein, is leaned on by the convex shelves on main shaft Mountain positions, by jump ring, pivot pin and spindle lock.
Preferably, the motor includes stator disc, fourth bearing, stator disc and the 5th axle on the main shaft, is cased with successively Hold, in fourth bearing and 5th bearing, be cased with the first rotor disk and the second rotor disk, the first rotor disk and the second rotor disk respectively Inner side be respectively equipped with the first groove, permanent magnet is installed in the first groove, is fixed with sun gear gear ring on the outside of the first rotor disk Connection, by sun gear gear ring output torque, the stator disc is provided with the pears for installing coil of several annular spread Shape hole, coil are fixed in pyriform hole by stopping means, and coil is connected with the core of a cable for electric power and signal transmission.
Preferably, the stopping means include inner ring rib, outer ring flange, annular circuit board and trim ring, the stator The one side of disk is extended with inner ring rib and outer ring flange, and stator disc opposite side is provided with annular circuit board and trim ring, loop circuit Plate is fixed on the inside of stator disc, and trim ring is located on the outside of stator disc, by inner ring rib, outer ring flange, annular circuit board and trim ring The axial displacement of limiting coil.
Preferably, the stator disc is sequentially with three the second grooves, the second groove row away from the one side of inner ring rib It is listed between adjacent two pyriforms hole and Hall element, Hall element is installed in the center of circle side of stator disc, the second groove Pin and the loop circuit plate weld being fixed on stator disc, annular circuit board is connected with core of a cable.
Preferably, the coil is the air core coil for justifying copper enamel-covered wire coiling, its internal via shape is triangle, after coiling Outer ring be shaped as pyriform and match with pyriform hole;The triangular inner hole of the coil is located at the interior angle on the inside of stator disc and is less than 60 °, the radical length of triangular inner hole is 1/3rd of long diameter less than the radial diameter of coil.The coil of pyriform is left and right Symmetrical structure, the axis of symmetry of each coil point to the center of circle of permanent magnet, and the length of coil axis of symmetry is long diameter, triangle Endoporus is isosceles triangle, and the height on endoporus base is the radical length of triangle, i.e., triangular inner hole is along permanent magnet diameter side Length upwards.
Preferably, being equipped with louvre on the first rotor disk and the second rotor disk.
Preferably, the permanent magnet is fan-shaped Nd-Fe-B permanent magnet material, its radical length is the inside and outside of fan-shaped permanent magnet Semidiameter is 0.5-0.8 times of the i.e. long diameter of radial diameter of coil.
Preferably, the permanent magnet includes several permanent magnet units, between leaving between two adjacent permanent magnets unit Gap, the size in gap are adapted to classical insulation.
Beneficial effect:The wheel hub motor with teeth of the disc type iron core-free DC motor Driver of the present invention, is keeping axis structure Under the premise of, using planetary gears double reduction, it is ensured that the reliability of hub motor structure;And as reducing gear subtracts The alternative of fast ratio is stronger, improve the present invention disc type iron core-free DC motor Driver wheel hub motor with teeth to it is electronic from The adaptability of driving wheel rim specification;In the planetary gear reducing mechanism of its double reduction, born due to primary speed-down gear Moment of torsion is less, thus employs the form that steel gear is meshed with engineering plastic gear, both ensure that the reliability of reducing gear, Rotational noise can be effectively reduced again.
Description of the drawings
Fig. 1 is the hub motor structure schematic diagram with teeth of disc type iron core-free DC motor Driver of the present invention.
Fig. 2 is the wheel-hub motor planetary reductor composition with teeth of disc type iron core-free DC motor Driver of the present invention.
Fig. 3 is the motor side view of the wheel hub motor with teeth of disc type iron core-free DC motor Driver of the present invention.
Fig. 4 is that the planetary gear speed reducing mechanism of the wheel hub motor with teeth of disc type iron core-free DC motor Driver of the present invention installs signal Figure.
Fig. 5 is the stator disc schematic diagram of the wheel hub motor with teeth of disc type iron core-free DC motor Driver of the present invention.
Fig. 6 is coil, Hall element and the ring of the wheel hub motor with teeth of disc type iron core-free DC motor Driver of the present invention Shape circuit board scheme of installation.
Fig. 7 is the external magnetic field after the coil electricity of the wheel hub motor with teeth of disc type iron core-free DC motor Driver of the present invention Analysis chart.
Fig. 8 is the adjacent permanent magnet body space adjustment test of the wheel hub motor with teeth of iron-core-free DC motor Driver of the present invention Torque efficiency figure.
Fig. 9 is the wheel hub motor with teeth and commercially available cored wheel hub motor with teeth of iron-core-free DC motor Driver of the present invention Moment of torsion-power-efficient-rotating speed comparison diagram.
Specific embodiment
As shown in Figures 1 to 7, the wheel hub motor with teeth of a kind of disc type iron core-free DC motor Driver of the invention, including Left end cap 3, right end cap 4, main shaft 10 and wheel hub 2, the left end cap 3 are enclosed within main shaft 10 by clutch shaft bearing 5, and right end cap 4 leads to Cross second bearing 51 to be enclosed within main shaft 10, left end cap 3 and right end cap 4 are connected with wheel hub 2 by screw, in casting technique, can The wheel hub 2 is merged into the assembly form that is cast into left end cap 3 or right end cap 4, the left end cap 3 is by reducing gear and too Sun wheel gear ring 11 connects, and sun gear gear ring 11 is fixed on motor 1, drives sun gear gear ring 11 to rotate by motor 1, so as to logical Crossing reducing gear drives left end cap 3 to rotate, so as to drive wheel hub 2 to rotate;The reducing gear comprising planet carrier 6, several the One planetary gear 7, several second planetary gears 8 and centre wheel 9, the first row star-wheel 7 are engaged with sun gear gear ring 11, the first row Star-wheel 7 is coaxially connected by rotary shaft with the second planetary gear 8, and rotary shaft is installed in planet carrier 6 by 3rd bearing 20, planet Frame 6 is enclosed within main shaft 10, and the second planetary gear 8 is engaged with the centre wheel 9 being fixed on left end cap 3, constitutes determining for double reduction Axle planetary gear reducing mechanism, its reducing gear are lubricated using solid oil.
In the present invention, the sun gear gear ring 11 includes the gear teeth and the installing ring coaxial with the gear teeth, and installing ring is fixed on On motor 1, oil shield 12 outside installing ring, is cased with, oil shield 12 is tightly connected with left end cap 3, and reducing gear is wrapped in left end cap 3 and oil shield 12 formed space in.Oil shield 12 is the round-meshed flat bowl structure in bottom, is made by engineering plastics molding Into, on left end cap 3, limiting diffusion of the lubricating oil in wheel hub 2.
In the present invention, the material of the first row star-wheel 7 is the engineering plastics such as the good nylon of intensity high-wearing feature or polyformaldehyde, Second planetary gear 8, the material of centre wheel 9 are steel, and the planet carrier 6 is sleeved on main shaft 10, and heart hole is provided with keyway wherein, Make backer's positioning by the convex shelves on main shaft 10, locked by jump ring 28, pivot pin 29 and main shaft 10, wherein the second planetary gear 8 is connection Shaft type gear.
In the present invention, the motor 1 includes stator disc 13, is cased with fourth bearing 14, stator on the main shaft 10 successively It is cased with the first rotor disk 15 and the second rotor disk in disk 13 and 5th bearing 141, fourth bearing 14 and 5th bearing 141 respectively 16, louvre 27 is equipped with the first rotor disk 15 and the second rotor disk 16, be conducive to dissipation motor 1 produced when working Heat, the inner side of the first rotor disk 15 and the second rotor disk 16 is respectively equipped with the first groove, is provided with permanent magnetism in the first groove Body 17, is fixedly connected with sun gear gear ring 11 on the outside of the first rotor disk 15, by 11 output torque of sun gear gear ring, the stator Disk 13 is provided with the pyriform hole 21 for installing coil 18 of several annular spread, and coil 18 is fixed on pears by stopping means In shape hole 21, air core coil of the coil 18 for circle copper enamel-covered wire coiling, its internal via shape is triangle, and its outer ring is shaped as The shape matched with pyriform hole 21, coil 18 are connected with the core of a cable 19 for electric power and signal transmission.
In the present invention, the stopping means include inner ring rib 24, outer ring flange 25, annular circuit board 22 and trim ring 23, the one side of the stator disc 13 is extended with inner ring rib 24 and outer ring flange 25, and 13 opposite side of stator disc is provided with annular electro Road plate 22 and trim ring 23, annular circuit board 22 are fixed on the inner side of stator disc 13, and trim ring 23 is located at the outside of stator disc 13, passes through Inner ring rib 24, outer ring flange 25, the axial displacement of 23 limiting coil 18 of annular circuit board 22 and trim ring.
In the present invention, the stator disc 13 is sequentially with three the second grooves 30 away from the one side of inner ring rib, and second Groove 30 is arranged between adjacent two pyriforms hole 21 installs hall sensing in the center of circle side of stator disc 13, the second groove 30 Device 26, the pin of Hall element 26 are welded with the annular circuit board 22 being fixed on stator disc 13, annular circuit board 22 and electricity Cable bundles 19 connect.
In the present invention, the permanent magnet 17 is fan-shaped Nd-Fe-B permanent magnet material, and its radical length is fan-shaped permanent magnet 17 Inside and outside semidiameter be 0.5-0.8 times of the i.e. long diameter of radial diameter of coil 18.The permanent magnet 17 includes several permanent magnetism Body Unit 17, leaves gap between two adjacent permanent magnets Unit 17, the size in gap is adapted to classical insulation.
In the present invention, the first rotor disk 15 and the second rotor disk 16 are made up of ferrous material, and its profile is flat It is bowl-shape, the bearing chamber of the first rotor disk 15 on the inside of which, by the sun gear gear ring 11 being fixed on the outside of which as bearing rib;Second It is partial on the outside of which and is provided with bearing rib in the bearing chamber position of rotor disk 16.The first rotor disk 15 and the second rotor disk 16 also may be used With by irony annulus and aluminium alloy or it is compound with engineering plastics make, its profile is flat bowl-shape, the bearing of the first rotor disk 15 Room on the inside of which, by the sun gear gear ring 11 being fixed on the outside of which as bearing rib;The bearing chamber position of the second rotor disk 16 is inclined To on the outside of which and it is provided with bearing rib.The advantage of the program is:The outlet hole position on main shaft 10 is left inside flat thin motor 1 Put, and the space that wire harness is connected with winding outlet, annular circuit board, using composite manufacture the first rotor disk 15 and the Two rotor disks 16, the weight of motor 1 can be lighter.
Analyzed based on energization air core coil external magnetic field and tested, the present invention proposes the line of disc type iron core-free direct current generator Circle 18 is combined with the most economical effective of permanent magnet 17.Such as Fig. 5, by the finite element to single energization air core coil external magnetic field Then analysis and experimental verification, energization air core coil center, magnetic induction first increase again with the increase of coil radius It is gradually reduced, a peak value occurs in hollow adjacent edges, hollow area is less, and magnetic field is gathered more obvious;Energization tubular wire The magnetic induction on circle surface occurs in the near axis of coil, more remote apart from hub of a spool, particularly in the outward flange of coil, Decay is quickly;Air gap portion coil surface magnetic field intensity is maximum, and with the increase of offline circle surface distance, magnetic field intensity declines rapidly Subtract, numerical value very little;By the analysis verification to energization air core coil magnetic induction rule, disc type iron core-free unidirectional current has been drawn The Technology Ways of machine are:Suitably reduce the radical length (the inside and outside semidiameter of sector electromagnet) of fan-shaped permanent magnet 17, subtract as far as possible The area of 18 hollow parts of little coil.
Reduce the radical length of fan-shaped permanent magnet 17, part flux loss can be produced, following table is long for the radial direction of permanent magnet 17 (air core coil radial diameter is D=to Experimental comparison's data that degree change is affected on disc type iron core-free direct current generator cost, efficiency 32mm, the high 10.0mm of coil, copper enamel-covered wire line footpath 0.6mm, electrical current 3.5A, the hollow radical length 9.6mm of triangle, fan Inside and outside diameter meansigma methodss 68mm of shape permanent magnet).The radical length with permanent magnet 17 be can be seen that from the correction data of table 1 Reduce, 18 flux loss of coil increases therewith and in the trend for accelerating increase, and motor maximal efficiency is also accordingly reduced, and efficiency is reduced Degree be less than flux loss degree, the range of decrease of 17 material cost of permanent magnet becomes apparent from.By Value Engineering, appropriateness reduces The radical length of fan-shaped permanent magnet 17, the efficiency of motor and moment of torsion can decrease, but can more reduce disappearing for rare earth permanent magnet Consumption, more preferably, competitiveness is higher for the economy of motor.
Table 1
Technical side of 17 radical length of permanent magnet (the inside and outside semidiameter of fan-shaped permanent magnet) less than the radial diameter of coil 18 Case, arranges stopping means and provides necessary space for fixed coil 18, both proportionate relationships, such as takes permanent magnet 17 radially Length is that the width that laminates of 0.9D, stopping means and coil 18 is less than 0.05D, and fixed effect is poor;And take permanent magnet 17 radially Length is less than 0.5D, then flux loss is larger, and Motor torque and efficiency also correspondingly can be reduced;Experiment shows, correctly handles well The proportionate relationship of the radial diameter of 17 radical length of permanent magnet and coil 18, obtains can the advance of motor, reliability, economy To preferably balancing.
Embodiment
Disc type iron core-free direct current generator, winding are made up of 6 coils 18, and the radial diameter of coil 18 is D=32mm, high 10.0mm, copper enamel-covered wire line footpath 0.67mm, the hollow radical length 9.6mm of triangle, the inside and outside diameter of 8 permanent magnet Unit 17 Meansigma methodss 68mm, axial height 6mm, radical length 20mm, wheel hub adopt speed reducing ratio for 1:8.74 planetary gear speed reducing mechanism slows down, The central angle of fan-shaped permanent magnet 17 takes 45 °, 41 °, 38 ° respectively and carries out contrast test;In Fig. 8, a represents that permanent magnet central angle is 45 ° The curve of moment of torsion and efficiency, b represent the curve that permanent magnet central angle is 41 ° of moments of torsion and efficiency, and c represents that permanent magnet central angle is The curve of 38 ° of moments of torsion and efficiency, from from the torque efficiency curve chart shown in Fig. 8, the peak efficiency of three kinds of motors is respectively 83.8%th, 83.1%, 80.6%, after reserving gap between two adjacent permanent magnets Unit 17, electric efficiency is affected not substantially, Less in the impact of high torque section, this result is also analyzed with energization air core coil external magnetic field and experimental result matches;Forever Gap change between magnet 17 affects larger to the speed of motor, respectively 281 revs/min of the no-load speed of three kinds of motors, 330 revs/min, 361 revs/min, it is possible thereby to targetedly adjust the gap between adjacent permanent magnet 17, improve motor Electric property is adapting to the change of wheel hub motor reducing gear speed reducing ratio and rim of electric bicycle size.
Relative to cored motor, the inductance value of the coil windings of disc type iron core-free motor is less, and less inductance value makes The electric property of motor shows as high rpm low torque, and the length of the number of turn and wire that increase coil windings can improve its inductance Amount, can take the diameter for increasing coil 18 or the two kinds of Technology Ways of line footpath for reducing wire;The line footpath for reducing wire can make winding Resistance rises and reduces power of motor, and the length of the number of turn and wire for increasing coil windings can increase the cost and body of motor Product, therefore it is required that increase the number of turn and length of the wire of setting line footpath in the limited space of stator disc 13 as much as possible, preferably Method for winding be:Winding clamp is laminated coiling wire, thus the line of coiling with the triangle rod Jing after chamfered as plug Circle 18, its internal via shape is triangle, and outer loop-shaped is strong by the shape size of triangle plug, the line footpath of wire, wire surrender The combined influence such as degree and winding tension resembles a pear in shape.
Analyzed based on air core coil external magnetic field and experimental result, the area of coil hollow parts should be reduced as far as possible, and Hollow area is less, and the outer loop-shaped of coil is closer to circle, can not make full use of the space of stator disc 13.Coil 18 it is interior Hole and outer loop-shaped should be counted according to the coil 18 of the line footpath of wire, the yield strength of wire, the size of 13 diameter of stator disc, winding Amount determines that Jing coiling and tests repeatedly, the triangular inner hole of coil 18 are located at the interior angle on the inside of stator disc and are less than 60 °, triangle The radical length of endoporus is less than the design that the radial diameter of coil is 1/3rd of long diameter, can preferably meet stator The requirement that the space utilization of disk 13 and magnetic field are gathered to 18 center of coil.
The wheel hub motor with teeth of disc type iron core-free DC motor Driver of the present invention, electric property are superior, except conventional motors Outside the advantages of simple structure, reliable, small volume, efficiency high, good speed adjustment features, as motor employs disc type iron-free Cored structure, motor are lightweight, and high speed performance is good, and no-load current is little and without magnetic hysteresis resistance so that electric bicycle have it is good Scrunch function of riding;Under the premise of axis structure is kept, using planetary gears double reduction, wheel hub motor had both been ensure that Reliability of structure, can make the high speed performance of disc type iron core-free direct current generator be not fully exerted again;And due to reducing gear The alternative of speed reducing ratio is stronger, improves the wheel hub motor with teeth of disc type iron core-free DC motor Driver of the present invention to electronic The adaptability of bicycle rim specification;The wheel hub motor with teeth of disc type iron core-free DC motor Driver of the present invention, its double reduction Planetary gear reducing mechanism in, as the moment of torsion born by primary speed-down gear is less, thus employ steel gear and engineering The form that plastic gear is meshed, both ensure that the reliability of slowing-down structure, can be effectively reduced rotational noise again.
The wheel hub motor with teeth of the disc type iron core-free DC motor Driver of the present invention, no-load current only have 0.3A, low torque High efficiency can be just reached under situation, and in Fig. 9, P1, N1, η 1 represents power, rotating speed and the efficiency of motor of the present invention, P2, N2, η respectively 2 represent the contrast power of motor, rotating speed and efficiency respectively, and such as Fig. 9, power efficiency in 75W can just reach 75%, it is electronic from Driving normally ride needed for 80-150W power interval, the present invention wheel hub motor with teeth can with 80% or so it is efficient Rate run, compared with commercially available wheel hub motor with teeth, advantage clearly, identical ride condition, identical power consumption, Under the situation of pure electric power traveling, its mileages of continuation continues than the electric motor car of wheel hub motor with teeth that generally adopts in the market Mileage improves more than 35%, improves more than 45% than the mileages of continuation of the electric motor car using low speed wheel hub motor.In addition originally Electric bicycle sample of the inventor of application to the wheel hub motor with teeth of the disc type iron core-free DC motor Driver of the employing present invention Machine is verified that can carry out by the requirement of batch production, the Mold Making of indivedual important aspects has been also carried out effective trial, Fault-free has ridden more than 6,000 kilometers to electric bicycle sample car, and adopts 48V18AH lithium battery groups in certain specific experiment, Successfully carry out pure electronic overlength distance of the single charge from Nanjing to 119 kilometers of Changzhou total length to ride test.
The above is only the preferred embodiment of the present invention, it should be pointed out that:For the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (10)

1. a kind of wheel hub motor with teeth of disc type iron core-free DC motor Driver, it is characterised in that:Including left end cap, right end cap, Main shaft and wheel hub, the left end cap are enclosed within main shaft by clutch shaft bearing, and right end cap is enclosed within main shaft by second bearing, left end Lid and right end cap are connected with wheel hub, and the left end cap is connected with sun gear gear ring by reducing gear, and sun gear gear ring is fixed on On motor, solar wheeling tooth circle is driven to rotate by motor, so as to drive left end cap to rotate by reducing gear, so as to drive wheel hub Rotate;The reducing gear includes planet carrier, several the first row star-wheels, several second planetary gears and centre wheel, and described the One planetary gear is engaged with sun gear gear ring, and the first row star-wheel is coaxially connected by rotary shaft with the second planetary gear, and rotary shaft passes through 3rd bearing is installed in planet carrier, and planet carrier is enclosed within main shaft, and the second planetary gear is nibbled with the centre wheel being fixed on left end cap Close.
2. the wheel hub motor with teeth of disc type iron core-free DC motor Driver according to claim 1, it is characterised in that:It is described Sun gear gear ring includes the gear teeth and the installing ring coaxial with the gear teeth, and installing ring is fixed on motor, is cased with oil shield outside installing ring, Oil shield is tightly connected with left end cap, and reducing gear is wrapped in the space that left end cap and oil shield are formed.
3. the wheel hub motor with teeth of disc type iron core-free DC motor Driver according to claim 1, it is characterised in that:It is described Planet carrier is sleeved on main shaft, and heart hole is provided with keyway wherein, makees backer's positioning by the convex shelves on main shaft, by jump ring, pivot pin With spindle lock.
4. the wheel hub motor with teeth of disc type iron core-free DC motor Driver according to claim 1, it is characterised in that:It is described Motor includes stator disc, is cased with fourth bearing, stator disc and 5th bearing, fourth bearing and 5th bearing on the main shaft successively It is upper to be cased with the first rotor disk and the second rotor disk respectively, it is recessed first to be respectively equipped with the inside of the first rotor disk and the second rotor disk Groove, is provided with permanent magnet, is fixedly connected with sun gear gear ring on the outside of the first rotor disk in the first groove, defeated by sun gear gear ring Go out moment of torsion, the stator disc is provided with the pyriform hole for installing coil of several annular spread, and coil passes through stopping means It is fixed in pyriform hole, coil is connected with the core of a cable for electric power and signal transmission.
5. the wheel hub motor with teeth of disc type iron core-free DC motor Driver according to claim 4, it is characterised in that:It is described Stopping means include inner ring rib, outer ring flange, annular circuit board and trim ring, and the one side of the stator disc is extended with inner ring rib And outer ring flange, stator disc opposite side is provided with annular circuit board and trim ring, and annular circuit board is fixed on the inside of stator disc, trim ring On the outside of stator disc, by the axial displacement of inner ring rib, outer ring flange, annular circuit board and trim ring limiting coil.
6. the wheel hub motor with teeth of disc type iron core-free DC motor Driver according to claim 5, it is characterised in that:It is described Stator disc is sequentially with three the second grooves, meta of second groove arrangement in adjacent two pyriforms hole away from the one side of inner ring rib In the center of circle side of stator disc, Hall element is installed in the second groove, the pin of Hall element be fixed on stator disc Loop circuit plate weld, annular circuit board is connected with core of a cable.
7. the wheel hub motor with teeth of disc type iron core-free DC motor Driver according to claim 4, it is characterised in that:It is described Coil is the air core coil for justifying copper enamel-covered wire coiling, and its internal via shape is triangle, the outer ring after coiling be shaped as pyriform and with Pyriform hole matches;The triangular inner hole of the coil is located at the interior angle on the inside of stator disc and is less than 60 °, the radial direction of triangular inner hole Length is 1/3rd of long diameter less than the radial diameter of coil.
8. the wheel hub motor with teeth of disc type iron core-free DC motor Driver according to claim 4, it is characterised in that:It is described Louvre is equipped with the first rotor disk and the second rotor disk.
9. the wheel hub motor with teeth of disc type iron core-free DC motor Driver according to claim 4, it is characterised in that:It is described Permanent magnet is fan-shaped Nd-Fe-B permanent magnet material, and the inside and outside semidiameter of the i.e. fan-shaped permanent magnet of its radical length is the radial diameter of coil 0.5-0.8 times of i.e. long diameter.
10. the wheel hub motor with teeth of disc type iron core-free DC motor Driver according to claim 4, it is characterised in that:Institute Permanent magnet is stated comprising several permanent magnet units, gap between two adjacent permanent magnets unit, is left, the size in gap with it is electric Performance parameter is adapted to.
CN201620987270.0U 2016-08-29 2016-08-29 Disk does not have iron core direct current motor driven and has tooth in -wheel motor Withdrawn - After Issue CN206041731U (en)

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CN201620987270.0U CN206041731U (en) 2016-08-29 2016-08-29 Disk does not have iron core direct current motor driven and has tooth in -wheel motor

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Application Number Priority Date Filing Date Title
CN201620987270.0U CN206041731U (en) 2016-08-29 2016-08-29 Disk does not have iron core direct current motor driven and has tooth in -wheel motor

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CN206041731U true CN206041731U (en) 2017-03-22

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106208511A (en) * 2016-08-29 2016-12-07 眭华兴 A kind of disc type iron core-free DC motor Driver have gear hub motor
CN110601637A (en) * 2019-09-30 2019-12-20 重庆虎溪电机工业有限责任公司 Disc type motor driving power generation controller
CN112072849A (en) * 2020-09-26 2020-12-11 南京好龙电子有限公司 Coaxial speed reducing motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106208511A (en) * 2016-08-29 2016-12-07 眭华兴 A kind of disc type iron core-free DC motor Driver have gear hub motor
CN106208511B (en) * 2016-08-29 2019-02-01 眭华兴 A kind of hub motor with teeth of disc type iron core-free direct current generator driving
CN110601637A (en) * 2019-09-30 2019-12-20 重庆虎溪电机工业有限责任公司 Disc type motor driving power generation controller
CN112072849A (en) * 2020-09-26 2020-12-11 南京好龙电子有限公司 Coaxial speed reducing motor

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