CN206041766U - There is a tooth in -wheel motor with glossy cunning of liquid lubrication - Google Patents

Abstract

The utility model discloses a there is a tooth in -wheel motor with glossy cunning of liquid lubrication, including left end lid, right -hand member lid, main shaft and wheel hub, left end lid through first bearing and an oil -sealing sleeve on the main shaft, be equipped with the oiling mouth on left end lid, right -hand member lid or the wheel hub, the right -hand member lid through second bearing and the 2nd oil -sealing sleeve on the main shaft, the left end lid passes through the sealing washer with the right -hand member lid 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 reduction mechanism that the two -stage slows 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 reduction gears adopts the high transmission efficiency of the glossy cunning of liquid lubrication, motor.

Description

A kind of wheel hub motor with teeth of use hydrodynamic lubrication oil lubrication

Technical field

The present invention relates to use the wheel hub motor with teeth of hydrodynamic lubrication oil lubrication, belong to machine field.

Background technology

The automobile-used wheel hub motor with teeth of electrical salf-walking, usually disposes high-speed driving motor, in wheel hub using planetary gear Reducing gear drives hub rotation, employs the dead axle planetary gear reducing mechanism of primary speed-down, and on its pinion frame Mono-directional overrun clutch is combined with, the coasting ability of bicycle is remained and is scrunched using the bicycle of this wheel hub motor and ride Function, but the mileages of continuation of bicycle does not obtain substantial raising, the motor that this wheel hub motor with teeth is used The low speed wheel hub motor that actually diameter is reduced, its rotating speed are usually no more than 1500 revs/min, are said also on stricti jurise It is high-speed electric expreess locomotive to be not really, and speed reducing ratio is usually 1:4.3, wheel hub motor is poor to the adaptability of wheel footpath, and this is built in Motor in wheel hub, its winding, permanent magnet etc. are open in wheel hub, it is impossible to be lubricated using lubricating oil, Reducing gear transmission efficiency is not high, and mechanical wear is larger.

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 using efficiently high-revolving Disc type iron core-free direct current generator is motor, with the wheel hub motor with teeth of hydrodynamic lubrication oil lubrication, is keeping axis structure Under the premise of, using the planetary gear reducing mechanism of double reduction, it is ensured that the reliability of hub motor structure；And due to slowing down The alternative of mechanism's speed reducing ratio is stronger, improves the wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication to electrical salf-walking The adaptability of Wheel specification.

Technical scheme：For solve above-mentioned technical problem, the present invention it is a kind of with hydrodynamic lubrication oil lubrication have gear hub electricity Machine, including left end cap, right end cap, main shaft and wheel hub, the left end cap passes through clutch shaft bearing and the first oil-sealing sleeve on main shaft, left End cap or right end cap or wheel hub are provided with pouring orifice, and right end cap passes through second bearing and the second oil-sealing sleeve on main shaft, left end cap It is connected with wheel hub by sealing ring with right end cap, the left end cap is connected with sun gear gear ring by reducing gear, solar wheeling tooth Circle is fixed on motor, drives solar wheeling tooth circle to rotate by motor, so as to drive left end cap to rotate by reducing gear, so as to Hub rotation, left end cap, right end cap and wheel hub is driven to pass through the first oil sealing, the second oil sealing and sealing ring by reducing gear and motor Sealing；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.

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, it is cased with the first disc, fourth bearing on the main shaft successively, determines Sub-disk, the second disc and 5th bearing, are cased with the first rotor disk, the second disc and on the first disc and fourth bearing The second rotor disk is cased with five bearings, is respectively equipped with the first groove, the first groove on the inside of the first rotor disk and the second rotor disk Permanent magnet is inside installed, several circumferential uniform coils are installed on the stator disc, on the outside of the first rotor disk and sun gear Gear ring is fixedly connected, and by sun gear gear ring output torque, the sun gear gear ring is provided with the first outage, on the second rotor disk It is provided with the second outage.

Preferably, the stator plate central is embedded with heat conduction ring, heat conduction ring is enclosed within main shaft.

Preferably, the end of the first rotor disk is provided with circle convex platform, it is recessed that the end of the second rotor disk is provided with annulus Groove, circle convex platform are inserted in ring groove, and circle convex platform is provided with sealing joint strip will be the first rotor disk and the second rotor disk close Envelope.

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.

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；The triangular inner hole of the coil is located at the interior angle on the inside of stator disc and is less than 60 °, triangular inner hole Radical length is 1/3rd of long diameter less than the radial diameter of coil.

Preferably, the inner circle of first disc and the second disc has a female thread, the interior diameter of female thread and its The diameter of the main shaft of position is consistent, and the female thread of the first disc and the second disc is in opposite direction.

The motor of the wheel hub motor with teeth of the present invention, employs axial magnetic field iron-free cored structure, motor gas-gap magnetic flux Density is less, and motor speed is high, and the power interval needed for normally being ridden with electric bicycle between its high efficient area is matched, can be big Amplitude improves the mileages of continuation of electric bicycle；This disk permanent-magnet dc motor, stator both sides respectively have one it is flat bowl-shape Rotor disk, two rotor disks are closely interlocked in the presence of magnetic field of permanent magnet, and the internal structure of motor is enclosed in In two rotor disks；The disk permanent-magnet dc motor of this enclosed construction with high speed characteristics, has been highly suitable as gear hub The motor of motor, and can be lubricated using lubricating oil；It is this with hydrodynamic lubrication oil lubrication have gear hub electricity Machine, needs, by above-mentioned technical proposal, effectively to prevent lubricating oil to outside wheel hub and to the seepage inside motor, improve The heat dispersion of motor.

Beneficial effect：The wheel hub motor with teeth of the use hydrodynamic lubrication oil lubrication of the present invention, as motor employs disk Formula 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 tool Have and good scrunch function of riding；Under the premise of axis structure is kept, using the planetary gear reducing mechanism of double reduction, it is ensured that The reliability of hub motor structure；And as the alternative of reducing gear speed reducing ratio is stronger, improve present invention liquid Adaptability of the wheel hub motor with teeth of body oil lubrication to rim of electric bicycle specification；The present invention uses hydrodynamic lubrication oil lubrication Wheel hub motor with teeth, the transmission efficiency of planetary gear reducing mechanism, cycle lie are long；In planetary gear reducing mechanism, by The moment of torsion born in primary speed-down gear is less, thus employs the form that steel gear is meshed with engineering plastic gear, both The reliability of slowing-down structure is ensure that, rotational noise can be effectively reduced again.

Description of the drawings

Fig. 1 is the overall structure diagram of the wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication.

Fig. 2 is the overall structure cut-away view of the wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication.

Fig. 3 is the motor structure cut-away view of the wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication.

Fig. 4 is the oil scraper ring schematic diagram of the wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication.

Fig. 5 is the first row oil-hole location schematic diagram of the wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication.

Fig. 6 is the second row oil-hole location schematic diagram of the wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication.

Fig. 7 is the planetary gear speed reducing mechanism scheme of installation of the wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication.

Fig. 8 is the external magnetic field analysis after the coil electricity of the wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication Figure.

Fig. 9 is the torsion of the adjacent permanent magnet body space adjustment test of the wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication Square efficiency chart.

Figure 10 is the wheel hub motor with teeth and commercially available cored wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication 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 use hydrodynamic lubrication oil lubrication of the invention, including left end cap 3rd, right end cap 4, main shaft 13 and wheel hub 2, left end cap 3 passes through clutch shaft bearing 5 and the first oil sealing 6 is enclosed within main shaft 13, left end cap 3, Right end cap 4 or wheel hub 2 are provided with pouring orifice 7, and right end cap 4 passes through second bearing 51 and the second oil sealing 61 is enclosed within main shaft 13, left End cap 3 and right end cap 4 are passed through sealing ring 8,81 and are connected with wheel hub 2 by screw, and sealing ring is made up of rubber, and left end cap 3 leads to Cross reducing gear to be connected with sun gear gear ring 14, sun gear gear ring 14 is fixed on motor 1, solar wheeling tooth is driven by motor 1 Circle 14 is rotated, so as to drive left end cap 3 to rotate by reducing gear, so as to drive wheel hub 2 to rotate, left end cap 3,4 and of right end cap Reducing gear and motor 1 are sealed by wheel hub 2 by the first oil sealing 6, the second oil sealing 61 and sealing ring；Reducing gear includes planet carrier 9th, several the first row star-wheels 10, several second planetary gears 11 and centre wheel 12, the first row star-wheel 10 and sun gear gear ring 14 Engagement, the first row star-wheel 10 are coaxially connected by rotary shaft with the second planetary gear 11, and rotary shaft is arranged on by 3rd bearing 15 On planet carrier 9, planet carrier 9 is sleeved on main shaft 13, and heart hole is provided with keyway wherein, makees backer by the convex shelves on main shaft 13 fixed Position, is locked by jump ring 26, pivot pin 25 and main shaft 13, and the second planetary gear 11 is engaged with the centre wheel 12 being fixed on left end cap 3, Constitute the dead axle planetary gear reducing mechanism of double reduction.

In the present invention, motor 1 include stator disc 21, be cased with main shaft 13 successively the first disc 16, fourth bearing 20, Stator disc 21, the second disc 161 and 5th bearing 201, are cased with the first rotor disk in the first disc 16 and fourth bearing 20 18, the second rotor disk 19, the first rotor disk 18 and the second rotor disk 19 is cased with the second disc 161 and 5th bearing 201 Inner side is respectively equipped with the first groove, is provided with permanent magnet 22, with sun gear gear ring 14 on the outside of the first rotor disk 18 in the first groove It is fixedly connected, by 14 output torque of sun gear gear ring, sun gear gear ring 14 is provided with the first outage 24, on the second rotor disk 19 The second outage 25 is provided with, 21 center of stator disc is embedded with heat conduction ring 17, and heat conduction ring 17 is enclosed within main shaft 13, to improve motor 1 Heat dispersion.The end of the first rotor disk 18 is provided with circle convex platform, and the end of the second rotor disk 19 is provided with ring groove, and annulus is convex Platform is inserted in ring groove, and circle convex platform is provided with sealing joint strip 26 and seals the first rotor disk 18 and the second rotor disk 19, Sealing joint strip 26, the first disc 16 and the second disc 161 are preventing lubricating oil to 1 internal leak of motor.The first rotor disk 18 and second rotor disk 19 in the presence of 22 magnetic field of permanent magnet, be pressed on sealing joint strip 26.First disc 16 and second Disc 161 is made up of the good toughness such as politef, nylon, the engineering plastics that corrosion resistance is strong, coefficient of friction is little, and which is cylindrical Diameter and fourth bearing 20,201 equal diameters of 5th bearing, snugly fit into the axle of the first rotor disk 18 and the second rotor disk 19 Interior is held, and makees synchronous axial system with the first rotor disk 18 and the second rotor disk 19.In first disc 16 and the second disc 161 Circle has female thread 29, and the interior diameter of female thread 29 is consistent with the diameter of the main shaft 13 of its position, the first disc 16 and the The female thread 29 of two discs 161 is in opposite direction, and the selection in concrete direction is determined by the rotation direction of motor 1；First disc 16 and second disc 161 when rotating with the first rotor disk 18 and the second rotor disk 19, by the crowding-out effect of female thread 29, oil Liquid is thrown out of outside motor 1.

In the present invention, permanent magnet 22 is fan-shaped Nd-Fe-B permanent magnet material, and 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 23.Permanent magnet 22 includes several permanent magnet units, adjacent Gap is left between two permanent magnet Unit 22, the size in gap is adapted to classical insulation.

As shown in Figure 5 and Figure 6, motor 1 is additionally provided with outage, and the wherein perforate direction of the first outage 24 is axial direction, opens It is located on sun gear gear ring 14, makes the bearing chamber of the first rotor disk 18 be connected with 1 external world of motor, the quantity in hole is optionally true Fixed, bore dia is 1～2mm, and hole position is positioned at the cylindrical place of the first disc 16；The perforate direction of the second outage 25 may be selected footpath To or it is oblique, the present embodiment perforate direction is for radially, hole position is located at the second disc in the bearing room of the second rotor disk 19 At 161, make the bearing chamber of the second rotor disk 19 be connected with 1 external world of motor, the quantity in hole optionally determines, bore dia be 1～ 2mm.The wheel hub motor with teeth of the use hydrodynamic lubrication oil lubrication of outage is provided with, under half wet face state, even if there is a small amount of oil Liquid is penetrated in the bearing room of rotor disk from the first disc 16 and the second disc 161, also can running up in motor 1 Under, the part fluid is discharged from outage.

As shown in Figure 1,3,21 center of stator disc in motor 1 is embedded with heat conduction ring 17, its axial height and stator disc 21 Axial height it is consistent；The endoporus of heat conduction ring 17 is provided with keyway, is socketed on main shaft 13 by pivot pin；Heat conduction ring 17 is by copper, height The good metal material of the heat conductivilitys such as strength aluminium alloy, ferrous metal is made, in 1 21 compression molding of stator disc of motor by which As inserts, the center of stator disc 21 is entrenched in.Heat when motor 1 works by produced by coil windings, by heat conduction ring 17 It is transmitted on 1 main shaft 13 of motor, then is outwards dissipated by bearing, lubricating oil, hub motor shell；Simultaneously as in motor 1 Fan-shaped permanent magnet 22 leaves gap, and motor 1 inside motor 1 can produce swirling eddy when operating, conduct heat to irony material Radiate on the first rotor disk 18 of material and the second rotor disk 19 and outwards.

As shown in Fig. 1,7, planet carrier 9 is sleeved on main shaft 13, and heart hole is provided with keyway wherein, by the convex shelves on main shaft 13 Make backer's positioning, locked by pivot pin 27, jump ring 28 and main shaft 13；The first row star-wheel 10 with the good nylon of intensity high-wearing feature or The engineering plastics such as polyformaldehyde are made, and the second planetary gear 11, centre wheel 12 are made using steel material, and wherein the second planetary gear 11 is Shaft coupling type gear, the first row star-wheel 10 and the second planetary gear 11 are installed by the combination of 3rd bearing 15 being embedded in planet carrier 9.

As shown in Figure 1, 2, in the bearing room of left end cap 3, right end cap 4 be located at wheel hub motor on the inside of be provided with the first oil sealing 6, Second oil sealing 61 is sleeved on the main shaft 13 of motor 1 side by side with clutch shaft bearing 5 and second bearing 51；In wheel hub 2 or left end cap 3 or The appropriate location of right end cap 4 is provided with the pouring orifice 7 of a lubricating oil.Preferably, pouring orifice 7 is arranged in by the present embodiment The cylindrical place of left end cap 3, and have bolt and the closure of " O " shape rubber ring, convenient addition or more oil change.

In actual production, in casting technique, wheel hub 2 can be merged with left end cap 3 or right end cap 4 and be cast into assembly Form.

Analyzed based on energization air core coil external magnetic field and tested, the present invention proposes with teeth with hydrodynamic lubrication oil lubrication The coil 23 of wheel hub motor is combined with the most economical effective of permanent magnet 22.Such as Fig. 8, outside to single energization air core coil The finite element analyses and experimental verification in magnetic field, energization air core coil center, magnetic induction is with the increase of coil radius First then increase is gradually reduced again, a peak value occurs in hollow adjacent edges, and hollow area is less, and magnetic field is gathered brighter It is aobvious；The magnetic induction on energization air core coil surface occurs in the near axis of coil, more remote apart from hub of a spool, particularly exists The outward flange of coil, decay is quickly；Air gap portion coil surface magnetic field intensity is maximum, with the increase of offline circle surface distance, Magnetic field intensity decays rapidly, numerical value very little；By the analysis verification to energization air core coil magnetic induction rule, use has been drawn The Technology Ways of the wheel hub motor with teeth of hydrodynamic lubrication oil lubrication are：Appropriate radical length (the sector magnet for reducing fan-shaped permanent magnet The inside and outside semidiameter of ferrum), as far as possible reduce coil hollow parts area.

Reduce the radical length of fan-shaped permanent magnet, part flux loss can be produced, following table becomes for the radical length of permanent magnet (air core coil is radially straight to change the Experimental comparison's data on the wheel hub motor cost with teeth with hydrodynamic lubrication oil lubrication, efficiency impact Footpath is D=32mm, the high 10.0mm of coil, copper enamel-covered wire line footpath 0.6mm, electrical current 3.5A, hollow radical length 9.6mm, fan Inside and outside diameter meansigma methodss 68mm of shape permanent magnet).Subtracting for the radical length with permanent magnet be can be seen that from the correction data of table 1 Little, coil flux loss increases therewith and in the trend for accelerating increase, and motor maximal efficiency is also accordingly reduced, the journey that efficiency is reduced Degree is become apparent from less than flux loss degree, the range of decrease of permanent magnet material cost.By Value Engineering, appropriateness reduces sector forever The radical length of magnet, the efficiency of motor and moment of torsion can decrease, but can more reduce the consumption of rare earth permanent magnet, motor More preferably, competitiveness is higher for economy.

Table 1

Technical side of 22 radical length of permanent magnet (the inside and outside semidiameter of fan-shaped permanent magnet) less than the radial diameter of coil 23 Case, arranges stopping means and provides necessary space for fixed coil 23, both proportionate relationships, determines limiting coil axle To the effect of displacement, such as take the width that laminates that 22 radical length of permanent magnet is 0.9D, stopping means and coil and be less than 0.05D, Gu Determine effect poor；And taking 22 radical length of permanent magnet less than 0.5D, then flux loss is larger, and Motor torque and efficiency also can be corresponding Ground is reduced；Experiment shows, correctly handles the proportionate relationship of 22 radical length of permanent magnet and the radial diameter of coil 23 well, can make electricity The advance of machine, reliability, economy are preferably balanced.

Embodiment

With the wheel hub motor with teeth of hydrodynamic lubrication oil lubrication, winding is made up of 6 coils 23, and the radial diameter of coil 23 is D=32mm, high 10.0mm, copper enamel-covered wire line footpath 0.67mm, the hollow radical length 9.6mm of triangle, 8 permanent magnet Unit 22 Inside and outside diameter meansigma methodss 68mm, axial height 6mm, radical length 20mm, wheel hub adopt speed reducing ratio for 1:8.74 planetary reduction gear Mechanism slows down, and the central angle of fan-shaped permanent magnet takes 45 °, 41 °, 38 ° respectively carries out contrast test；In Fig. 9, a represents the permanent magnet center of circle Angle is the curve of 45 ° of moments of torsion and efficiency, and b represents the curve that permanent magnet central angle is 41 ° of moments of torsion and efficiency, and c represents that permanent magnet is justified Heart angle is the curve of 38 ° of moments of torsion and efficiency, from from the torque efficiency curve chart shown in Fig. 9, the peak efficiency point of three kinds of motors Not Wei 83.8%, 83.1%, 80.6%, after reserving gap between two adjacent permanent magnets Unit 22, on electric efficiency affect not Substantially, less in the impact of high torque section, this result is also analyzed and experimental result kissing with energization air core coil external magnetic field Close；Gap change between permanent magnet 22 affects larger to the speed of motor, the no-load speed of three kinds of motors be respectively 281 turns/ Minute, 330 revs/min, 361 revs/min, it is possible thereby to targetedly adjust adjacent permanent magnet 22 between gap, improve The electric property of motor 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 or the two kinds of Technology Ways of line footpath for reducing wire；The line footpath for reducing wire can make winding electricity 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 21 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 23, its internal via shape is triangle, and outer loop-shaped is surrendered by the shape size of triangle plug, the line footpath of wire, wire The combined influence such as intensity 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.The endoporus of coil 23 Should be determined according to the number of coils of the line footpath of wire, the yield strength of wire, the size of stator disc diameter, winding with outer loop-shaped Fixed, Jing coiling and tests repeatedly, the triangular inner hole of coil 23 are located at the interior angle on the inside of stator disc and are less than 60 °, triangular inner hole Radical length less than coil 23 radial diameter be long diameter 1/3rd design, can preferably meet stator disc The requirement that 21 space utilization and magnetic field are gathered to 23 center of coil.

The wheel hub motor with teeth of the use hydrodynamic lubrication oil lubrication of the present invention, electric property are superior, except conventional motors structure Simply, outside the advantages of reliable, small volume, efficiency high, good speed adjustment features, as motor employs disc type iron core-free knot 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 has good pedaling Step on function of riding；Under the premise of axis structure is kept, using the planetary gear reducing mechanism of double reduction, wheel hub electricity had both been ensure that Machine 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 reductor The alternative of structure speed reducing ratio is stronger, improves the wheel hub motor with teeth of present invention hydrodynamic lubrication oil lubrication to electric bicycle The adaptability of wheel rim specification；With teeth wheel hub motor of the present invention with hydrodynamic lubrication oil lubrication, the transmission of planetary gear reducing mechanism Efficiency high, cycle lie are long；In planetary gear reducing mechanism, as the moment of torsion born by primary speed-down gear is less, thus adopt The form being meshed with engineering plastic gear with steel gear, both ensure that the reliability of slowing-down structure, can be effectively reduced again Rotational noise.

The wheel hub motor with teeth of the use hydrodynamic lubrication oil lubrication of the present invention, no-load current only has 0.3A, under low torque situation Can just reach high efficiency, such as Figure 10, in Figure 10, P1, N1, η 1 represents power, rotating speed and the efficiency of motor of the present invention respectively, P2, N2, η 2 represents power, rotating speed and the efficiency of contrast motor respectively, and power efficiency in 75W can just reach 75%, in electrical salf-walking Car normally ride needed for 80-150W power interval, the present invention wheel hub motor with teeth can be in 80% or so high efficiency Operation, compared with commercially available wheel hub motor with teeth, advantage clearly, is ridden condition, identical power consumption, pure in identical Under the situation of electric power traveling, its mileages of continuation is than in the continuing of the electric motor car of wheel hub motor with teeth that generally adopts in the market Journey improves more than 35%, improves more than 45% than the mileages of continuation of the electric motor car using low speed wheel hub motor.Other this Shen Inventor please is carried out to the electric bicycle model machine for adopting the wheel hub motor with teeth with hydrodynamic lubrication oil lubrication of the present invention Checking, can be carried out by the requirement of batch production, and the Mold Making of indivedual important aspects has been also carried out effective trial, electrical salf-walking Fault-free has ridden more than 6,000 kilometers to car sample car, and adopts 48V18AH lithium battery groups in certain specific experiment, successfully enters Pure electronic overlength distance of the single charge from Nanjing to 119 kilometers of Changzhou total length of having gone is ridden 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 (9)

1. a kind of wheel hub motor with teeth of use hydrodynamic lubrication oil lubrication, it is characterised in that：Including left end cap, right end cap, main shaft and Wheel hub, the left end cap pass through clutch shaft bearing and the first oil-sealing sleeve on main shaft, and left end cap or right end cap or wheel hub are provided with note Hydraulic fluid port, right end cap pass through second bearing and the second oil-sealing sleeve on main shaft, and left end cap and right end cap are connected with wheel hub by sealing ring Connect, the left end cap is connected with sun gear gear ring by reducing gear, and sun gear gear ring is fixed on motor, driven by motor Sun gear ring gear against rotation, so as to drive left end cap to rotate by reducing gear, so that drive hub rotation, left end cap, right end cap Pass through the first oil sealing, the second oil sealing and sealing ring by reducing gear and motor seal with wheel hub；The reducing gear includes planet Frame, several the first row star-wheels, several second planetary gears and centre wheel, the first row star-wheel are engaged with sun gear gear ring, The first row star-wheel is coaxially connected by rotary shaft with the second planetary gear, and rotary shaft is installed in planet carrier, OK by 3rd bearing Carrier is enclosed within main shaft, and the second planetary gear is engaged with the centre wheel being fixed on left end cap.

2. the wheel hub motor with teeth of use hydrodynamic lubrication oil lubrication according to claim 1, it is characterised in that：The planet carrier It is sleeved on main shaft, heart hole is provided with keyway wherein, makees backer's positioning by the convex shelves on main shaft, by jump ring, pivot pin and main shaft Locking.

3. the wheel hub motor with teeth of use hydrodynamic lubrication oil lubrication according to claim 1, it is characterised in that：The motor bag Containing stator disc, the first disc, fourth bearing, stator disc, the second disc and 5th bearing on the main shaft, is cased with successively, the The first rotor disk is cased with one disc and fourth bearing, is cased with the second rotor disk on the second disc and 5th bearing, first The first groove is respectively equipped with the inside of rotor disk and the second rotor disk, permanent magnet is installed, on the stator disc in the first groove Several circumferential uniform coils are installed, are fixedly connected with sun gear gear ring on the outside of the first rotor disk, by sun gear gear ring Output torque, the sun gear gear ring are provided with the first outage, and the bearing chamber of the second rotor disk is provided with the second outage.

4. the wheel hub motor with teeth of use hydrodynamic lubrication oil lubrication according to claim 3, it is characterised in that：The stator disc Center is embedded with heat conduction ring, and heat conduction ring is enclosed within main shaft.

5. the wheel hub motor with teeth of use hydrodynamic lubrication oil lubrication according to claim 3, it is characterised in that：Described first turn The end of sub-disk is provided with circle convex platform, and the end of the second rotor disk is provided with ring groove, and circle convex platform is inserted in ring groove, Circle convex platform is provided with sealing joint strip and seals the first rotor disk and the second rotor disk.

6. the wheel hub motor with teeth of use hydrodynamic lubrication oil lubrication according to claim 3, it is characterised in that：The permanent magnet For fan-shaped Nd-Fe-B permanent magnet material, its radical length be the inside and outside semidiameter of fan-shaped permanent magnet be coil radial diameter it is i.e. long straight 0.5-0.8 times of footpath.

7. the wheel hub motor with teeth of use hydrodynamic lubrication oil lubrication according to claim 3, it is characterised in that：The permanent magnet Comprising several permanent magnet units, gap, the size in gap and classical insulation between two adjacent permanent magnets unit, is left Adaptation.

8. the wheel hub motor with teeth of use hydrodynamic lubrication oil lubrication according to claim 3, it is characterised in that：The coil is The air core coil of circle copper enamel-covered wire coiling, its internal via shape is triangle, and the outer ring after coiling is shaped as pyriform；The coil Triangular inner hole is located at the interior angle on the inside of stator disc and is less than 60 °, and the radical length of triangular inner hole is less than the radial diameter of coil / 3rd of i.e. long diameter.

9. the wheel hub motor with teeth of use hydrodynamic lubrication oil lubrication according to claim 3, it is characterised in that：Described first gets rid of The inner circle of oil ring and the second disc has female thread, and the interior diameter of female thread is consistent with the diameter of the main shaft of its position, the The female thread of one disc and the second disc is in opposite direction.