CN103683781A - Integrated direct-current brushless motor of wheel hub - Google Patents
Integrated direct-current brushless motor of wheel hub Download PDFInfo
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- CN103683781A CN103683781A CN201310701129.0A CN201310701129A CN103683781A CN 103683781 A CN103683781 A CN 103683781A CN 201310701129 A CN201310701129 A CN 201310701129A CN 103683781 A CN103683781 A CN 103683781A
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Abstract
The invention relates to an integrated direct-current brushless motor of a wheel hub. Compared with the prior art, the integrated direct-current brushless motor of the wheel hub overcomes the defect that an integrated direct-current brushless motor of a wheel hub cannot operate at a high speed. The integrated direct-current brushless motor comprises a motor shell, a motor shaft, a motor end cover, a stator and a magnetic steel ring. The motor shaft is installed in the center of the motor shell in a penetrating mode, the motor end cover and the motor shell are fixedly installed through a bearing, the inner circle of the magnetic steel ring is provided with magnetic steel in an adhering mode and is installed in the motor shell through the motor shaft in a penetrating mode, the stator is embedded on the magnetic steel ring and is installed through the motor shaft in a penetrating mode, wire windings penetrate through wire embedded troughs formed by clamping jaws of the stator and are connected outside through shaft holes in the motor shaft, and the wire embedded troughs are in asymmetric elliptic structures with wide outsides and narrow insides. According to the motor, high-power and low-speed large torque is achieved, starting currents are low, and the motor shaft is small in axial dimension and easy to assemble.
Description
Technical field
The present invention relates to DC Brushless Motor technical field, is a kind of wheel hub integrated DC brushless motor specifically.
Background technology
At present, the power set of known motorcycle are to be coordinated and formed by petrol engine and gearbox, and the characteristic of its fuel oil has caused exhaust emission and running cost to remain high.The idea that has occurred power-actuated motorcycle in order to solve these drawbacks, according to driven by power, need to charge and the restriction of the factor such as course continuation mileage because of battery, need the transmission efficiency of whole dynamical system high, therefore the best power source device of battery-operated motor cycle should be wheel hub and motor is integrated, be that adjustable-speed motor directly drives, reduce the mechanical loss in transmission process.
Wheel hub motor of electric motorcycle on market is generally that power is little, moment of torsion is little, material is poor, structure is poor, can not meet the technical conditions of replacing fuel oil motorcycle, does not reach the travel speed of battery-operated motor cycle.The wire casing on existing stator core in motor particularly, as shown in Figure 7, because the impact of wire insertion technology can not guarantee intensive, neat the arranging of wire casing inside conductor, because wire casing inside conductor cannot dense convergence, number of conductors is few, also just caused wire energising magnetic field interaction force rear and that epitrochanterian magnet steel produces little, the generation power or the induced potential that drive rotor banding dynamic load to rotate are together also just little, and nature cannot reach runs at high speed.Although have and occurred powerful wheel hub motor in part technology, but powerful wheel hub motor must be equipped with the motor shaft that axial dimension is large, cause wheel hub motor assembling difficulty, inconvenient maintenance, motor radiating is bad, useful life is short, cannot extensive use in real life.How to develop a kind of both can guaranteed output large, moment of torsion is large, can guarantee again that motor shaft axial dimension is little, assembling is easy to wheel hub integrated DC brushless motor has become and be badly in need of the technical problem that solves.
Summary of the invention
The object of the invention is in order to solve the defect that in prior art, wheel hub integrated DC brushless motor cannot be run at high speed, provide a kind of wheel hub integrated DC brushless motor to solve the problems referred to above.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of wheel hub integrated DC brushless motor, comprise electric machine casing, motor shaft, electric motor end cap, stator and magnetic steel ring, described motor shaft runs through the electric machine casing center that is arranged on, described electric motor end cap fixedly mounts by bearing and electric machine casing, on the inner ring of magnetic steel ring, paste magnet steel and run through and be arranged in electric machine casing by motor shaft, stator is embedded on magnetic steel ring and by motor shaft and runs through installation, in the line embedding groove forming between the claw of stator, all there is wire winding to pass, wire winding connects by the axis hole on motor shaft, described line embedding groove is asymmetric ellipsoidal structure wide outside and narrow inside.
Described electric machine casing is wheel rim, wheel hub hub core and monolateral end cap integral cast molding structure.
The material of described stator is high magnetic flux silicon steel.
At the bottom of the arc of described line embedding groove, radius is 2.5mm, and upper arc radius is 2mm, and the width of upper arc the widest part is 6.6mm, and at the bottom of arc, the width at narrow place is 5.1mm, and upper arc A/F is 2.3mm.
beneficial effect
A kind of wheel hub integrated DC brushless motor of the present invention, has compared with prior art realized that power is large, low-speed big, and starting current is little, and the little and assembling of motor shaft axial dimension easily.By adopting the sealing of electric motor end cap and electric machine casing to install, guaranteed that air can not enter motor internal, be applicable to rain mud dirt environment and use, reliability is high.By the design of the high magnetic flux silicon steel of stator strong permanent magnetic structure, played braking and energy back performance is good, without excitation, increase continual mileage, low noise, environment friendly and pollution-free.By rotor, adopt embedded magnet steel to design, met motor vehicle and jolted, large starting torque, at a high speed, the needs of rotating operation and weak-magnetic speed-regulating.By changing the shape of stator line embedding groove, improve the arranging density of energized conductor in stator, reduce magnetic gap and reach the object that improves magnetic field intensity.There is feature simple in structure, easy to maintenance, with low cost.
accompanying drawing explanation
Fig. 1 is plan structure cutaway view of the present invention
Fig. 2 is the structural representation of electric machine casing of the present invention
Fig. 3 is the structural representation of motor shaft of the present invention
Fig. 4 is the structural representation of magnetic steel ring of the present invention
Fig. 5 is the structural representation of stator of the present invention
Fig. 6 is the line embedding groove structure for amplifying schematic diagram of stator of the present invention
Fig. 7 is the line embedding groove structure for amplifying schematic diagram of stator in prior art
Fig. 8 is the A point enlarged drawing in Fig. 1
Wherein, 1-motor shaft, 2-bearing, the monolateral end cap of 3-, 4-electric motor end cap, 5-wheel hub hub core, 6-wheel rim, 7-magnetic steel ring, 8-magnet steel, 9-stator, 10-electric machine casing, 11-disc, 12-axis hole, 13-claw, 14-line embedding groove, 15-wire winding.
Embodiment
For making that architectural feature of the present invention and the effect reached are had a better understanding and awareness, in order to preferred embodiment and accompanying drawing, coordinate detailed explanation, be described as follows:
As shown in Fig. 1, Fig. 3 and Fig. 8, a kind of wheel hub integrated DC brushless motor of the present invention, comprises electric machine casing 10, motor shaft 1, electric motor end cap 4, stator 9 and magnetic steel ring 7.Motor shaft 1 runs through electric machine casing 10 centers that are arranged on, electric machine casing 10 middle parts namely, electric motor end cap 4 is by bearing 2 and electric machine casing 10 fixed installations, electric machine casing 10 and electric motor end cap 4 closed group of by motor shaft 1, being passed have been formed fit, cause air can not enter motor internal, be applicable to using in rain mud dirt environment, improved the reliability of equipment.On the inner ring of magnetic steel ring 7, paste magnet steel 8 and run through and be arranged in electric machine casing 10 by motor shaft 1, as shown in Figure 4, on the inner ring of magnetic steel ring 7, pasting magnet steel 8 and formed rotor, matching with stator 9.Stator 9 is embedded on magnetic steel ring 7 and by motor shaft 1 and runs through installation, has formed the coordinate installation of stator with rotor, and stator 9 and magnetic steel ring 7 are all to run through installation by motor shaft 1.Stator 9 is embedded in rotor, by the wire on stator 9, switches on, and causes rotor to rotate.On wheel hub hub core 5, be provided with disc 11, disc 11 can be so that whole device lightweight when in use increasing stator to the supporting role of load, and takes into account demand attractive in appearance.As shown in Figure 5 and Figure 6, between the claw 13 of stator 9, the line embedding groove 14 of composition is interior all has wire winding 15 to pass, claw 13 spreads all over the whole cylindrical of stator 9, and the gap mutually forming between every two claws 13 is line embedding groove 14, at the interior use wire of line embedding groove 14 winding 15, passes.Line embedding groove 14 is asymmetric ellipsoidal structure wide outside and narrow inside, by asymmetric ellipsoidal structure wide outside and narrow inside can by wire winding 15 sufficient, intensive through line embedding groove 14.Due to the line embedding groove 14 of the prior art asymmetric ellipsoidal structure that is outer narrow inner width, in carrying out the production technology that wire winding 15 passes, after the slot of appearance by line embedding groove 14 fits inside, inner wide mouthful can not be filled up again, and want by extruding or other modes, wire winding 15 to be squeezed toward wide mouthful from the slot of line embedding groove 14, by current production technology, cannot complete, the Kuan Kouchu that can only form as shown in Figure 7 still exists large quantity space cannot pass the situation of wire winding 15.As shown in Figure 6, line embedding groove 14 is designed to asymmetric ellipsoidal structure wide outside and narrow inside, the cylindrical place near stator 9 in line embedding groove 14 is wide, narrow near the inner circle of stator 9.When processing through wire winding 15, from wide mouthful of past narrow conducting wire winding 15 of inner circle of cylindrical, can realize very easily after first narrow place being filled up and wider mouthful of cylindrical being filled up, the wire winding 15 of having realized line embedding groove 14 maximizes through measuring.The alteration of form of line embedding groove 14 meets the shape that wire winding 15 is intensive, neatly arrange more, makes wire can be full of wire casing space as far as possible, thereby reaches the object that reduces the magnetic gap between conductor and iron core.In stator 9, line embedding groove 14, near the inner circle of stator 9,, at the bottom of arc, is comprised of two semicircles, and at the bottom of the arc of two semicircles, radius is 2.5mm; Line embedding groove 14, near the cylindrical place of stator 9, is gone up arc, two semicircles, consisted of, and the upper arc radius of two semicircles is 2mm.On line embedding groove 14, the place of arc and two sideline orthogonal forks is upper arc the widest part, and the width of upper arc the widest part is 6.6mm; At the bottom of line embedding groove 14 arcs, be the narrowest place at the bottom of arc with the place of two sideline orthogonals forks, at the bottom of arc, the width at narrow place is 5.1mm.The upper arc A/F of line embedding groove 14 is 2.3mm; Between two adjacent line embedding grooves 14, between central point, be apart at a distance of 13.3mm between 11.3mm, upper arc opening.From the contrast of Fig. 6 and Fig. 7, can find out, line embedding groove 14 shapes in Fig. 6 can be held more wire, and the magnetic gap between wire and iron core is also less simultaneously.The quantity that wire winding 15 passes is more, more intensive, can improve wire winding 15 at ferromagnet, i.e. arranging density in stator 9, by reducing magnetic gap to reach the object that improves magnetic field intensity.Wire winding 15 connects by the axis hole 12 on motor shaft 1, connects corresponding power supply unit and carry out power supply supply after connecting.
As shown in Figure 2, electric machine casing 10 is by wheel rim 6, wheel hub hub core 5 and the 3 integral cast moulding of monolateral end cap.Therefore without clamping again, can process at one time adding man-hour all location dimensions, guarantee concentricity.Avoid the error that in prior art, end cap and wheel rim split assembling produce, caused the nonconcentricity of motor stator and magnet steel (rotor), thereby produce non-uniform air-gap, affect the situation appearance of the electrical property of motor sky, load.In order further to promote magnetic field intensity, increase result of use, the material of stator 9 can be high magnetic flux silicon steel, by the method that adopts high magnetic flux silicon steel sheet to make iron core, further improves magnetic field intensity.When reality is used, wire winding 15 normally connects electricity by prior art, and inside conductor winding 15 is maximized passes for the line embedding groove 14 of stator 9, produces the magnetic field interaction force producing with epitrochanterian magnet steel and maximizes.Thereby drive generation power or the induced potential that rotor banding dynamic load is rotated together also just to maximize, impel electrical motors to running up.By not changing original motor shaft size, guaranteed high-power, high pulling torque, and owing to having adopted the structure of wheel rim 6, wheel hub hub core 5 and the 3 integral cast moulding of monolateral end cap, its installation and maintenance are easier, heat dispersion is better, and wheel hub waterproof effect is better.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection range that the present invention requires is defined by appending claims and equivalent thereof.
Claims (4)
1. a wheel hub integrated DC brushless motor, comprise electric machine casing (10), motor shaft (1), electric motor end cap (4), stator (9) and magnetic steel ring (7), described motor shaft (1) runs through electric machine casing (10) center that is arranged on, described electric motor end cap (4) is by bearing (2) and electric machine casing (10) fixed installation, on the inner ring of magnetic steel ring (7), paste magnet steel (8) and run through and be arranged in electric machine casing (10) by motor shaft (1), stator (9) is embedded in magnetic steel ring (7) and goes up and pass through motor shaft (1) and run through installation, in the line embedding groove (14) forming between the claw (13) of stator (9), all there is wire winding (15) to pass, wire winding (15) connects by the axis hole (12) on motor shaft (1), it is characterized in that: described line embedding groove (14) is asymmetric ellipsoidal structure wide outside and narrow inside.
2. a kind of wheel hub integrated DC brushless motor according to claim 1, is characterized in that: described electric machine casing (10) is wheel rim (6), wheel hub hub core (5) and monolateral end cap (3) integral cast molding structure.
3. a kind of wheel hub integrated DC brushless motor according to claim 2, is characterized in that: the material of described stator (9) is high magnetic flux silicon steel.
4. a kind of wheel hub integrated DC brushless motor according to claim 2, it is characterized in that: at the bottom of the arc of described line embedding groove (14), radius is 2.5mm, upper arc radius is 2mm, the width of upper arc the widest part is 6.6mm, at the bottom of arc, the width at narrow place is 5.1mm, and upper arc A/F is 2.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310701129.0A CN103683781A (en) | 2013-12-19 | 2013-12-19 | Integrated direct-current brushless motor of wheel hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310701129.0A CN103683781A (en) | 2013-12-19 | 2013-12-19 | Integrated direct-current brushless motor of wheel hub |
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| Publication Number | Publication Date |
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| CN103683781A true CN103683781A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310701129.0A Pending CN103683781A (en) | 2013-12-19 | 2013-12-19 | Integrated direct-current brushless motor of wheel hub |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100148597A1 (en) * | 2008-12-13 | 2010-06-17 | Zhongshan Broad-Ocean Motor Co., Ltd. | Direct current drive motor |
| CN201975965U (en) * | 2011-01-17 | 2011-09-14 | 山东新大洋机电科技有限公司 | Connected wheel hub full-plate motor for electric motorcycle |
| CN203027070U (en) * | 2012-12-07 | 2013-06-26 | 浙江旺得福车业有限公司 | Electric vehicle wheel hub motor with oil seal protecting cover |
| CN203313025U (en) * | 2013-05-23 | 2013-11-27 | 常州电时电动车辆科技有限公司 | Direct-current brushless hub motor |
| CN203645419U (en) * | 2013-12-19 | 2014-06-11 | 郝敬春 | Rim-hub integrated direct current brushless motor |
-
2013
- 2013-12-19 CN CN201310701129.0A patent/CN103683781A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100148597A1 (en) * | 2008-12-13 | 2010-06-17 | Zhongshan Broad-Ocean Motor Co., Ltd. | Direct current drive motor |
| CN201975965U (en) * | 2011-01-17 | 2011-09-14 | 山东新大洋机电科技有限公司 | Connected wheel hub full-plate motor for electric motorcycle |
| CN203027070U (en) * | 2012-12-07 | 2013-06-26 | 浙江旺得福车业有限公司 | Electric vehicle wheel hub motor with oil seal protecting cover |
| CN203313025U (en) * | 2013-05-23 | 2013-11-27 | 常州电时电动车辆科技有限公司 | Direct-current brushless hub motor |
| CN203645419U (en) * | 2013-12-19 | 2014-06-11 | 郝敬春 | Rim-hub integrated direct current brushless motor |
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Application publication date: 20140326 |