CN109768680A - A kind of electric bicycle hub motor with teeth - Google Patents

Abstract

The invention discloses a kind of electric bicycle hub motor with teeth, including main shaft, wheel hub and end cap, driving motor and deceleration mechanism on main shaft may be rotatably mounted at；The driving motor is disc type iron core-free direct current generator, including two rotor disks that may be rotatably mounted on main shaft, the stator disc being fixedly mounted on main shaft, is equipped with permanent magnet on the inside of rotor disk and is equipped with air port, at least set the device that catches the wind in a rotor disk；Coil and Hall sensor are installed on the stator disc.The coil winding is in the triangular core of nonmetallic materials, and alternately equipped with the mounting hole of three Hall sensor mounting grooves and loop line plate on stator disc, coil and Hall sensor are connect with core of a cable.Technical solution of the present invention has excellent performance the good structural stability of hub motor, airtightness and thermal diffusivity etc., and takes full advantage of disc type iron core-free direct current generator in the higher efficiency in low torque stage, and the mileages of continuation of electric bicycle greatly improved.

Description

A kind of electric bicycle hub motor with teeth

Technical field

The present invention relates to a kind of electric bicycle hub motor, especially electric bicycle hub motor with teeth, drivings Motor is disc type iron core-free direct current generator.

Background technique

Existing electric bicycle mostly uses low speed hub motor, the advantage is that: power of motor is big, motor is generally not necessarily to Maintenance, transmission efficiency is high, but since this motor is there are magnetic hysteresis resistance, weakens or even lose riding for electric bicycle Function, electric boosted type bicycle have gradually gone on the development course of motorized Shu Shihua, driving motor power and traveling speed Remote super " the electric bicycle technical specification of security " newly promulgated of degree.

To overcome driving motor, there are magnetic hysteresis resistances, using all directions motor as the motor manufacturer of representative, introduce to early stage domestic Japanese Yamaha electric bicycle internal rotor semi-shaft type hub motor with teeth improve, be proposed the high-speed wheel of shaft type Hub motor.The rated power of this motor meets new national regulation, and be combined on its pinion frame mono-directional overrun from Clutch efficiently solves influence of the magnetic hysteresis resistance of motor to riding.The driving motor of this hub motor is substantially exactly The low speed hub motor for the outer rotor form that diameter reduces, in low torque, efficiency is lower, general only not high in power requirement Light-duty power-assist type electric bicycle on use.

Both the above mainstream motor, is Nd-Fe-B permanent-magnet D, simple, reliable for operation, small in size with structure, Light-weight, the advantages that rated efficiency is high, good speed adjustment features, but due to the low speed characteristics of electric bicycle, actually riding Motor often operates in the inefficient section much smaller than rated efficiency in journey, and the mileages of continuation of electric bicycle is not high, it is difficult to full The public consumption demand to mileages of continuation is improved of foot.

China Patent No. 201010289645.3 discloses a kind of energy-saving hub motor, uses disc type iron core-free direct current Machine, and using electric vehicle hub as rotor disk, directly by In-wheel motor driving electric vehicle, which is also combined in wheel hub The identical disc type iron core-free generator of structure type, recharges for collecting electric energy caused by vehicle braking to battery, thus Play energy-efficient effect.The torque of this hub motor, driving vehicle driving all directly acts on the copper wire of air core coil On, must be using the structure type for directly driving electric vehicle hub it is worthless, the structure type and also heavy-duty motor Heat production is more, and lacks effective heat dissipation technology scheme, therefore theoretically can determine whether, the technical solution is without in all senses Practicability, it is impossible to realize its goal of the invention.Substantially, the inductance of disc type iron core-free direct current generator is smaller, belongs to small-power The scope of motor, most prominent advantage are high rpm low torques and without magnetic hysteresis resistance, and the efficiency when slow-speed of revolution is very low, and The low speed sightseeing electric car of lesser 72V voltage is required power of motor in the market, and motor rated power also requires to have 5000W, the pitch circle of hub stud holes is limited to the space between the pitch circle in rim bolt hole on electric vehicle hub, is had at this Powerful disc type iron core-free direct current generator and disc type iron core-free generator are arranged in the space of limit to be accomplished, moreover By the description of the invention, the electric vehicle of the energy-saving hub motor can only install the solid tyre without inflation.

China Patent No. ZL 201620995774.7 discloses a kind of disc type iron core-free direct current generator, using double rotor single The technical solution of stator proposes a kind of air core coil it is preferable to use the peripheral shape of circle copper enameled wire coiling for pyriform, peace On the stator disc being made of insulating material, and through limiting device fixed coil, rotor disk is put down made of ferrous material The bowl-shape disk in bottom, permanent magnet are pulled on the inside of rotor disk, realize two rotor disk upper magnetic poles using the mutual attractive force of permanent magnet Accurate correspondence, pass through on the first rotor disk install sun gear gear ring output motor torque.China Patent No. ZL 201621115521.2 a kind of energy-saving electric bicycle hub motor is disclosed, using the disk of ZL 201620995774.7 Driving motor of the formula iron-core-free direct current generator as hub motor, by double reduction planetary gear mechanism by driving motor Power passes to wheel hub, both technical solutions, and disc type iron core-free direct current generator is applied successfully to electric bicycle neck Domain, the mileages of continuation of electric bicycle improve 40% or more, and energy non-resistance is ridden under power failure state.Disc type iron-free The architectural characteristic of core motor shows that all torsion torque when vehicle operation is averaged the tubular wire being assigned under work done state On every copper conductor of circle, especially for vehicle in heavy duty or when persistently climbing, the motor feels hot makes the self-adhesion Qi intensity of air core coil When reduction, air core coil is easily deformed；Requirement of the new electric bicycle technical specification of security to electric bicycle fordability It is enhanced, therefore should also take measures to meet the requirement standardized in technical solution.

Disc type iron core-free direct current generator is widely used in the disc driver of computer field, this high speed low torque Low-power machine occurs generally in the form of thin type printed circuit single rotor disc type electric machine, considers torque to coil without excessive Deformation and the influence of the factors such as motor radiating, in the disc type iron core-free wind-driven generator of application of special occasions, stator disc size compared with Greatly, and without considering commutation and the thermal diffusivity of motor, usually by coil die stamping after molding polymer material stator disc On, coil windings are wrapped up by polymer material completely, thus coil windings can bear biggish torque.It is promoted as driving electricity The output power of the disc type iron core-free direct current generator of machine, it is necessary to overcome influence of the thermodynamics factor to electrical-coil winding, the technology So far it can only be successfully applied to the low-power machine reason for it of the single-turn minor structure of printed circuit motor form.

Summary of the invention

Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention mentions on the basis of experimental exploring repeatedly For a kind of electric bicycle hub motor with teeth, driving motor is disc type iron core-free direct current generator, effectively overcome heating power because Influence of the element to disc type iron core-free direct current generator coil windings realizes disc type iron core-free direct current generator and leads in electric bicycle The successful application in domain, engineering reliability and compliance are guaranteed, and electric bicycle, which still has, good scrunches function of riding Can, the mileages of continuation under the situation that is driven by pure electric power has increased significantly than presently commercially available electric bicycle.

Technical solution: in order to solve the above technical problems, a kind of electric bicycle hub motor with teeth of the invention, including master Axis may be rotatably mounted at wheel hub and end cap, driving motor and deceleration mechanism on main shaft；The driving motor is disc type iron-free Core direct current generator including the first rotor disk that may be rotatably mounted on main shaft and the second rotor disk, is fixedly mounted on main shaft Permanent magnet is installed on the inside of stator disc, the first rotor disk and the second rotor disk；Several coils are installed on the stator disc With three Hall sensors, coil is fixed by limiting devices such as inner ring rib, outer ring flange, outside casing, loop line plates, Coil and Hall sensor are connect with core of a cable.The effect of the first rotor disk and the second rotor disk in magnetic field of permanent magnet Under can closely be connected in any circumferential position, the coil by self-adhesion circle enameled wire be wound on the three of nonmetallic materials On angular inner core, there are the positioning groove that is welded of the Hall sensor by conducting electrical angle setting, institute in loop line plate periphery It states Hall sensor to be welded on the periphery of annular circuit board and positioned by positioning groove, the stator disc is molded by insulating materials Coil is installed again after molding, is alternately equipped with three Hall sensor mounting grooves and ring on the baffle of nearly main shaft side between its coil The mounting hole of shape wiring board, the baffle between the coil of stator disc far from main shaft side is equipped with the mounting hole of installation limiting device, described The first rotor disk and the second rotor disk are equipped with several air ports, at least one in the first rotor disk and the second rotor disk is set There is the device that catches the wind.

Preferably, the first rotor disk is using irony disk and sun gear gear ring as inserts, by aluminum alloy materials Die cast, the second rotor disk is using irony disk as inserts by aluminum alloy materials die cast.Irony disk is as rotor disk The back iron of permanent magnet, permanent magnet are closely pull-in in the irony disk of the first rotor disk and the second rotor disk, magnetic circuit quilt It is limited in two irony disks to be formed by enclosure space, eliminates permanent magnet magnetic leakage；Sun gear gear ring and rotor disk are whole Die casting, simple and reliable for structure, arranged radially is compact, leaves space for the installation of sealing ring.

Preferably, the coil is wound in the triangular core of nonmetallic materials by self-adhesion enamel insulated round copper wire, triangle Shape inner core is made of ceramics, glass, composite material with glass fibre etc., and triangular core circulates equipped with motor inner air Through-hole, be located at stator disc on the inside of angle less than 60 °.

Preferably, the loop line plate, there are also several mounting holes of circumferential arrangement, mounting hole is pressed with its periphery The positioning groove that is welded that three Hall sensors of electrical angle setting are connected, is arranged alternately, loop line plate is by sky in the circumferential Heart metal rivet is fixedly connected with stator disc, and the inner hole of hollow metal rivet can pass through the phase line or coil outlet of core of a cable.

Preferably, the air port is located at the first rotor disk and the second rotor disk periphery, the air port of the first rotor disk is row Air port, the device that catches the wind are located at the air port on the inside of it, and the second rotor disk is air inlet, and the device that catches the wind sets air port on the outside Place, the device that catches the wind are that inclined-plane or half are tubaeform, and opening direction is consistent with motor direction of rotation.

Preferably, the two sides that the main shaft is located at stator disc are respectively equipped with convex gear and circlip, or equal in stator disc two sides Radial displacement of the stator disc on main shaft is limited as the installation positioning anchor of stator disc equipped with circlip.

Preferably, the device that catches the wind is boss, boss extends from the side wall in air port, the end of boss and air port it is another One side wall is equipped with gap.

Preferably, the outside of the wheel hub and end cap and main shaft junction are equipped with sealing ring, the main shaft is located at cable Harness hole one end is equipped with fluid sealant compound lining mouth.

Preferably, the inner ring rib and outer ring flange and stator disc are integrally molded, the outside casing is sector, Molded by polymer material, one end has split pin, and the longitudinal edge that outside casing is equipped with the same end the same face of split pin has Chamfering, outside casing imperforation pin one end are equipped with chamfering in the longitudinal edge of the one side far from split pin.

Preferably, the baffle between the coil of the stator disc far from main shaft is equipped with limiting device mounting hole, mounting hole For the lockhole of the split pin of outside casing, lockhole is made of the circular hole of two different inner diameters, installs the bore inner diameter of outside casing one side Less than the bore inner diameter of outer ring flange one side, stator disc, which is located at the lockhole of installation outside casing, is equipped with arc groove.

The utility model has the advantages that axis structure electric bicycle hub motor with teeth of the invention, under the premise of keeping axis structure, Slowed down using planetary gear reducing mechanism, takes full advantage of the high rotary speed property of disc type iron core-free direct current generator, make have gear hub Motor has higher torque, and the torque for directly acting on coil reduces, and the first rotor disk and the second rotor disk are in permanent magnet magnetic It is closely interlocked under the action of, two rotor disk permanent magnet pole automatic and accurates are corresponding, do not use the routine sides such as bolt Method connection, improves the radial space utilization rate of hub motor, and since coil winding is in the triangle for such as ceramics for having through-hole On shape inner core, the globality of coil is increased substantially, and is unlikely to deform at high temperature, along on rotor disk be arranged air port and Catch the wind device, efficiently solves rotor disk two sides in the disc type dual-rotor structure inside disc style D. C. motor of symmetrical structure form The heat that coil windings generate is discharged motor immediately, and is formed in hub interior by the characteristic that the symmetrical heat of air pressure cannot dissipate Circulating current, heat diffuse to rapidly hub interior and are dissipated by aluminum wheel hub, and motor internal temperature rise is controlled, coil The adhesion strength of winding will not reduce, and permanent magnet demagnetization will not occur under extreme use condition in hub motor or burning machine is existing As.In addition, inner circle is equipped with sealing ring on the outside of wheel hub and end cap, main shaft is equipped with fluid sealant compound lining mouth, in addition when installation end cap Using conventional gluing packaging technology, the airtight performance of hub motor is guaranteed, and is able to satisfy new specification completely to electric bicycle The requirement of fordability, realizes the purpose of the present invention.

Detailed description of the invention

Fig. 1 is a kind of electric bicycle hub motor structure schematic diagram with teeth of the present invention.

Fig. 2 is a kind of electric bicycle hub motor schematic three dimensional views with teeth of the present invention.

Fig. 3 is a kind of electric bicycle hub motor stator disc schematic diagram with teeth of the present invention.

Fig. 4 is a kind of electric bicycle hub motor loop line plate structural schematic diagram with teeth of the present invention.

Fig. 5 is a kind of electric bicycle hub motor the first rotor dish structure schematic diagram with teeth of the present invention.

Fig. 6 is a kind of electric bicycle of present invention hub motor air port with teeth and apparatus structure cut-away illustration of catching the wind.

Fig. 7 is a kind of electric bicycle hub motor outside casing schematic diagram with teeth of the present invention.

Fig. 8 is driving motor disc type iron core-free direct current generator schematic three dimensional views of the present invention.

Fig. 9 is a kind of electric bicycle hub motor 200W model machine with teeth " power-efficiency-torque " curve of the present invention Figure.

Figure 10 is a kind of electric bicycle hub motor 200W model machine with teeth of the present invention and commercially available 250W hub motor with teeth " power-efficient-torque-rotation speed " comparison diagram

Figure 11 is commercially available 300W electric bicycle low speed hub motor " power-efficiency-torque " curve graph.

Specific embodiment

As shown in Figures 1 to 8, a kind of electric bicycle hub motor with teeth of the invention, including main shaft 1, rotatable peace Wheel hub 2 and end cap 3, driving motor 4 and deceleration mechanism 5 on main shaft；The driving motor is disc type iron core-free direct current Machine, including the first rotor disk 6 that may be rotatably mounted on main shaft and the second rotor disk 7, the stator disc being fixedly mounted on main shaft 8, the inside of the first rotor disk 6 and the second rotor disk 7 is equipped with permanent magnet 9；Several coils are installed on the stator disc 8 10 and three Hall sensors 11, coil 10 passes through inner ring rib 31, outer ring flange 32, outside casing 33, loop line plate 14 etc. Limiting device is fixed, and limiting device is fixed on stator disc 8, and coil 10 and Hall sensor 11 are connect with core of a cable 12.Institute Stating the first rotor disk 6 and the second rotor disk 7 can closely be engaged under the action of 9 magnetic field of permanent magnet in any circumferential position Together, without other security measures after installation, the coil 10 is wound in the triangle of nonmetallic materials by self-adhesion circle enameled wire On core 13, there is the positioning groove 25 that is welded of the Hall sensor 11 by conducting electrical angle setting in 14 periphery of loop line plate, The Hall sensor 11 is welded on the periphery of annular circuit board 14 and is positioned by positioning groove 25, and the stator disc 8 is by insulating After material compression molding coil 10 is installed again, is alternately equipped with three hall sensings on the baffle of nearly 1 side of main shaft between its coil 10 The mounting hole 16 of device mounting groove 15 and loop line plate 14, the baffle between the coil of stator disc 8 far from main shaft 1 are equipped with limit Device mounting hole, the first rotor disk 6 and the second rotor disk 7 are equipped with several air ports 17, the first rotor disk 6 and second At least one in rotor disk 7 is equipped with the device 18 that catches the wind.

In the present invention, the first rotor disk 6 is by irony disk 19 and sun gear gear ring 20 as inserts, by aluminium Alloy material die cast, the second rotor disk 7 is by irony disk 19 as inserts by aluminum alloy materials die cast；First turn The outside of sub-disk 6 and the second rotor disk 7 is equipped with radial reinforcing rib 21；Back iron of the irony disk 19 as permanent magnet 9, permanent magnet 9 It is closely pull-in in the irony disk 19 of the first rotor disk 6 and the second rotor disk 7, magnetic circuit is limited in two ironys Disk 19 is formed by enclosure space, shortens the length of magnetic path, eliminates permanent magnet magnetic leakage；Sun gear gear ring 20 and first 6 integral die-cast of rotor disk, the power output structure of motor is simple and reliable, and arranged radially is compact, reserves for the installation of sealing ring 22 Space.Sun gear gear ring 20 is rotated with driving motor 4, to be passed to the torque of driving motor 4 by deceleration mechanism 5 Central gear 23 with runner hub 2 to rotate.

In the present invention, the coil 10 is wound on the triangular core 13 of nonmetallic materials by self-adhesion enamel insulated round copper wire On, triangular core 13 is made of ceramic, and is equipped with the through-hole 24 of motor inner air circulation, is located on the inside of stator disc Angle is less than 60 °.

In the present invention, there are also several mounting holes 26 of circumferential arrangement, mounting holes 26 for the loop line plate 14 With the positioning groove 25 that is welded of three Hall sensors 11 by conducting electrical angle setting of its periphery, alternately set in the circumferential It sets, the width of positioning groove 25 and the equivalent width of Hall sensor 11, loop line plate 14 is by hollow metal rivet 27 and determines Sub-disk 8 is fixedly connected, and according to wiring needs, the phase line of core of a cable 12 or the outlet of coil 10 can be from hollow metal rivets 27 Inner hole pass through.

In the present invention, the air port 17 is located at 7 periphery of the first rotor disk 6 and the second rotor disk, the first rotor disk 6 Air port 17 is exhaust outlet, and at the air port that device 18 is located on the inside of it of catching the wind, the air port 17 of the second rotor disk 7 is air inlet, is caught the wind Device 18 is set at air port on the outside, and the device 18 that catches the wind may be selected inclined-plane, half forms such as tubaeform, opening direction and is driven The direction of rotation of dynamic motor 4 is consistent.

In the present invention, the two sides that the main shaft 1 is located at stator disc 8 are respectively equipped with convex gear 28 and circlip 29, or in stator 8 two sides of disk are equipped with circlip 29, as the positioning anchor that stator disc 8 is installed, limit radial position of the stator disc 8 on main shaft 1 It moves.

In the present invention, the outside of the wheel hub 2 and end cap 3 and the junction of main shaft 1 are equipped with sealing ring 22, the master Axis 1 is located at 12 outlet hole one end of core of a cable and is equipped with fluid sealant compound lining mouth 30, after stator module assembles and completes circuit concatenation, The threading hole on sealant closure main shaft is injected from gum-injecting port 30.

In the present invention, the inner ring rib 31 and outer ring flange 32 and 8 molded, the external pressure of one of stator disc Item 33 is sector, and by polymer material injection molding, one end has split pin 34, and outside casing 33 is equipped with the same of split pin 34 The longitudinal edge of end the same face has chamfering, and 33 imperforation pin of outside casing, 34 one end is equipped in the longitudinal edge of the one side far from split pin Chamfering.

In the present invention, the baffle between the coil 10 of the stator disc 8 far from main shaft 1 is equipped with limiting device mounting hole, Mounting hole 16 is the lockhole 35 of the split pin 34 of outside casing 33, and lockhole 35 is made of the circular hole of two different inner diameters, installs external pressure Item 33 bore inner diameter be less than outer ring flange 32 while bore inner diameter, stator disc 8 be located at installation outside casing 33 lockhole It is equipped with arc groove 36 at 35, the installation of outside casing 33 is facilitated to fix.Several outside casings 33 form the external pressure of an occlusion Circle, is fixedly connected, to limit the displacement in the radial direction of coil 10 with stator disc 8 by split pin 34 and lockhole 35.

Embodiment one

Electric bicycle has gear hub motor, voltage rating 48V, rated power 200W, including spoke formula rear-guard wheel hub 2, end cap 3, axis 1, driving motor 4 is double rotor single stator disc type iron-core-free direct current generator, using double reduction planetary gear Deceleration mechanism 5 slow down, planetary gear reducing mechanism include planet stent 37, duplex nylon planetary gear 38, central gear 23 and There are convex gear in the sun gear gear ring 20 being fixedly connected with motor, compound planet gear inside, and convex gear two sides are equipped with bearing, socket In the fixing axle of planet carrier, and by circlip locking；The reduction ratio of planetary gear speed-reduction structure is set as 1:8.12；Disc type without Eight magnetic grades of use of iron core direct current generator totally 16 fan-shaped permanent magnets, permanent magnet interior diameter 47mm, overall diameter 91mm are axial The winding of height 6mm, stator disc 8 are made of six coils 10, stator disk diameter 108mm, and the radial diameter of coil 10 is D= 34mm, high 7.6mm, copper enameled wire line footpath 0.71mm, ceramic triangular core radical length 11.6mm；In the first rotor disk 6 The wind page that catches the wind of eight bevel-faced forms is set at outer circle on the inside of motor, and 8 air inlets are arranged in the outer circle of the second rotor disk 7.The sample The electric property of machine is substantially better than any type of hub motor with teeth in the market, and Fig. 9 shows model machine and certain esbablished corporation volume Constant voltage 48V rated power 250W motor is normally ridden power-torque-efficiency-curve under situation in electric bicycle Comparison diagram (1 is the present embodiment model machine in figure), it can be seen in figure 9 that model machine can reach high efficiency when torque is smaller, Clearly, it is the common low of 350W that the feeling of riding of the present embodiment model machine is even 48V rated power with voltage to energy-saving effect Fast hub motor (see Figure 10) compares favourably；It there are no infiltration phenomenon after sample car travels one hour in the rain, in wheel hub, in Nanjing The climbing test that lofty mountains garden carries out, tests winding temperature in disc type iron core-free direct current generator with electric-resistivity method, coil is most High temperature rises to 72 DEG C, complies fully with expected design.In terms of efficiency curve Fig. 8 of electromechanical testing, the efficiency section of model machine is wide, high Efficiency section is in the section 2~18N.m.Sample car (20 inches) maximum speed per hour 25Km/h, instrument when flat urban road expires electrician's condition Table shows that average operating current is about 3.9A, compared with commercially available same type electric bicycle 5A-6A operating current, energy-saving effect Obviously, under the situation that identical condition of riding, identical power consumption, pure electric power travel, mileages of continuation compares existing market On the mileages of continuation of the electric vehicle of hub motor with teeth that generallys use improve 35% or more, than using low speed hub motor The mileages of continuation of electric vehicle improve 45% or more, when urban congestion section is ridden, advantage is more obvious.

Embodiment two

Electric bicycle has a gear hub motor, voltage rating 48V, rated power 300W, 16 inches of integral type wheel hubs, Its driving motor uses 12 pole double rotor single stator disc type iron-core-free direct current generators, permanent magnet interior diameter 64mm, radical length 22mm, winding circuitry number are 3, and 8 diameter 125mm of stator disc, the radial diameter of coil 10 is D=34mm, high 7.0mm, copper enamel-cover Line line footpath 0.60mm, ceramic 13 radical length 11.6mm of triangular core, using primary speed-down planetary gear mechanism, reduction ratio 1:5 times, table 1 is the dynamometer test data of model machine, as can be seen that model machine peak efficiency is 83.9% in table, input power from 58W~542W is in the efficiency section greater than 70%, and input power is in efficient greater than 80% from 85W~300W In rate section, efficiency section is very wide, coincide very much between high efficient area with practical power interval needed for operating condition of normally riding, And the 350W electric bicycle low speed hub motor shown in Figure 10 is reviewed, it is 230W~515W between the high efficient area greater than 80%, The advantage of model machine is obvious.

Table 1

Electric bicycle hub motor with teeth of the present invention has overturned the disc type iron core-free motor that motor field generally believes It can apply to the traditional cognitive of the small power high speed low torque direct current generator of printed circuit formula, electric property is superior, in addition to passing Unite simple electric machine structure, reliable for operation, small in size, high-efficient, good speed adjustment features the advantages that outside, since driving motor uses Disc type iron core-free structure, motor is light-weight, and high speed performance is good, and no-load current is small and without magnetic hysteresis resistance, to make electric bicycle Have the function of that good scrunch is ridden；Under the premise of keeping axis structure, using double reduction planetary gear mechanism, both guaranteed The reliability of hub motor structure, and so that the high speed performance of disc type iron core-free direct current generator is not fully exerted；And row In star gear reduction, the form that powder metallurgical gear is meshed with engineering plastic gear can be used, moreover it is possible to effectively drop Underneath drive noise.The above is only a preferred embodiment of the present invention, it should be pointed out that: for the common skill of the art For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these are improved and profit Decorations also should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of electric bicycle hub motor with teeth, including main shaft, wheel hub and end cap, driving on main shaft may be rotatably mounted at Motor and speed reducer structure；The driving motor be disc type iron core-free direct current generator, including may be rotatably mounted on main shaft first The inside installation of rotor disk and the second rotor disk, the stator disc being fixedly mounted on main shaft, the first rotor disk and the second rotor disk There is permanent magnet；Several coils and three Hall sensors are installed, coil is kept off by inner ring rib, outer ring on the stator disc Side, outside casing, loop line plate are fixed, and coil and Hall sensor are connect with core of a cable, it is characterised in that: described first turn Sub-disk and the second rotor disk are equipped with several air ports, at least one in the first rotor disk and the second rotor disk is equipped with the dress that catches the wind It sets.

2. a kind of electric bicycle hub motor with teeth according to claim 1, it is characterised in that: the coil is self-adhesion Circle enameled wire is wound in the triangular core of nonmetallic materials, and loop line plate periphery has by conducting electrical angle setting The positioning groove that is welded of Hall sensor, the Hall sensor are welded on the periphery of annular circuit board and are determined by positioning groove Position, the stator disc install coil after being pressed and molded by insulating materials again, alternately set on the baffle of nearly main shaft side between its coil There are three Hall sensor mounting groove and the mounting hole for installing annular wiring board, separate main shaft side between the coil of stator disc Baffle is equipped with limiting device mounting hole.

3. a kind of electric bicycle hub motor with teeth according to claim 1, it is characterised in that: the first rotor disk It is using irony disk and sun gear gear ring as inserts, by aluminum alloy materials die cast, the second rotor disk makees irony disk It is inserts by aluminum alloy materials die cast.

4. a kind of electric bicycle hub motor with teeth according to claim 1, it is characterised in that: the triangular core Equipped with through-hole, triangular core is made of one of ceramics, glass, composite material with glass fibre material, and it is fixed to be located at Angle on the inside of sub-disk is less than 60 °.

5. a kind of electric bicycle hub motor with teeth according to claim 1, it is characterised in that: the loop line plate There are also several mounting holes of circumferential arrangement, three Hall sensors by conducting electrical angle setting of mounting hole and its periphery The positioning groove that is welded is arranged alternately in the circumferential, and loop line plate is fixedly connected by hollow metal rivet with stator disc.

6. a kind of electric bicycle hub motor with teeth according to claim 1, it is characterised in that: several described air ports It is located at the periphery of the first rotor disk and the second rotor disk, the device that catches the wind of the first rotor disk is located at the air port on the inside of it, and second The device that catches the wind of rotor disk is set at air port on the outside.

7. a kind of electric bicycle hub motor with teeth according to claim 1, it is characterised in that: the device that catches the wind is convex Platform, boss extend from the side wall in air port, and the end of boss and another side wall in air port are equipped with gap.

8. a kind of electric bicycle hub motor with teeth according to claim 1, it is characterised in that: the wheel hub and end cap Outside and main shaft junction are equipped with sealing ring, and the main shaft is located at cable beam hole one end equipped with fluid sealant compound lining mouth.

9. a kind of electric bicycle hub motor with teeth according to claim 1, it is characterised in that: the inner ring rib and outer It encloses rib and stator disc is integrally molded, the outside casing is sector, and molded by polymer material, one end has opening Pin, the longitudinal edge that outside casing is equipped with the same end the same face of split pin have chamfering, and outside casing imperforation pin one end is far from opening The longitudinal edge of the one side of pin is equipped with chamfering.

10. a kind of electric bicycle hub motor with teeth according to claim 1 or 8, it is characterised in that: the stator disc Coil between far from main shaft baffle be equipped with limiting device mounting hole, mounting hole be outside casing split pin lockhole, lockhole It is made of the circular hole of two different inner diameters.