CN202200826U - All-electric wheel assembly - Google Patents
All-electric wheel assembly Download PDFInfo
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- CN202200826U CN202200826U CN2011202005302U CN201120200530U CN202200826U CN 202200826 U CN202200826 U CN 202200826U CN 2011202005302 U CN2011202005302 U CN 2011202005302U CN 201120200530 U CN201120200530 U CN 201120200530U CN 202200826 U CN202200826 U CN 202200826U
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- wheel
- electric
- magneto
- wheel hub
- suspension
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Abstract
The utility model relates to an all-electric wheel assembly comprising a wheel hub and a tyre, wherein the wheel hub is internally provided with a sealed containing space, the space is internally provided with a sun wheel, a plurality of planetary gears which are driven to rotate by a plurality of permanent magnet motors are arranged along the axial direction of the sun wheel, and the relationship between the gear number Z of the sun wheel and the planetary gears N meets the formula that Z=KN, wherein K and N are respectively to be an integral number which is more than 2. Furthermore, the all-electric wheel assembly further comprises a set of initiative suspension systems formed by a set of worm wheels and worm rods. By adopting the plurality of permanent magnet motors, the all-electric wheel assembly drives the planetary gears on output shafts of the permanent magnet motors to transmit force moment and rotation speed to the sun wheel and finally drives the wheel hub to rotate by the sun wheel. The permanent magnet motors are distributed in the shape of planets and used for jointly driving the sun wheel, so that the aim of expanding the force moment and the power can be simultaneously achieved; and the axial sizes of the motors do not need to be enlarged, and the space of the wheel hub is sufficiently used, so that the basic appearance characteristic of the wheel hub is kept. The necessary function requirement of the future high-performance all-electric vehicle can be met due to the initiative suspension systems.
Description
Technical field
The utility model relates to a kind of automotive wheel assembly, more particularly, relates to a kind of many three-phase motor with permanent magnets all-electric wheel set that drive, the band active suspension that adopts planetary layout.
Background technology
Wheel hub motor is used in Electrical Bicycle and Moped Scooter in a large number at present, but the use in electronlmobil is still rare.Major cause is; Each wheel hub of electronlmobil needs the continuous moment of 20-200Nm, the continuous power of 2-200KW usually; And hub rotation speed is not high again, has only 1000-1500rpm usually, therefore; Making directly will inevitably be very big by motor-driven words diameter, and used material and the cost of motor can be very high.The method that solves is to adopt reducing gear, and this method can increase by a retarder of 5: 1 usually, can rotating speed of motor be brought up to 5000-7500rpm, and the volume of motor can reduce exponentially, and this scheme is referred to as the wheel motor scheme usually.But also there is the too big shortcoming of motor axial dimension in this traditional wheel motor scheme, and has destroyed the flat basic profile characteristics of wheel hub motor, is unfavorable for the layout of wheel hub on car load.
Application number 200410037252.8; The Chinese invention patent of " a kind of structure that constitutes wheel hub motor with plural electrical motor " by name; Proposition disperses power with the structure that plural electrical motor constitutes electric bicycle hub motor, reaches cost-cutting and through changing the purpose that number of motors disposes the different capacity product.This scheme is only applicable to low power wheel hub of electric bicycle, and the drive multiple of plural electrical motor can increase the control difficulty and control cost.
In addition, active suspension is the indispensable function of the all-electric car of following High Performance, and the structure of power wheel hub is unfavorable for the active suspension of integrated complicacy, or does not have the active suspension of the integrated complicacy in space at all.
The utility model content
The technical matters that the utility model will solve is; Motor axial dimension to the above-mentioned wheel motor of prior art is big; The car load layout that is unfavorable for wheel hub; Adopt the wheel hub of plural electrical motor to be only applicable to the defective that electronic bicycle of miniwatt and control difficulty and cost height, traditional wheel hub structure are unfavorable for integrated active suspension, a kind of all-electric wheel set is provided.
The utility model solves the technical scheme that its technical matters adopted: construct a kind of all-electric wheel set; Comprise wheel hub and the tire of being located at said wheel hub periphery; It is characterized in that; The central authorities of said wheel hub are provided with a fully enclosed accommodation space, and the side wall centers of said accommodation space is provided with perforation, the interior wheel shaft that is equipped with hollow through bearing of said perforation;
In said accommodation space, be installed with the sun wheel of passing said wheel shaft; Circumferencial direction along said sun wheel is evenly equipped with N satellite gear; Each said satellite gear rotates by being fixed in the magneto-electric machine driven in rotation on the vehicle frame and then driving said sun wheel, and the reduction ratio of said sun wheel and said satellite gear is 4: 1-6: 1;
The stator zero-bit of said magneto-electric machine and rotor zero-bit are all alignd with the zero-bit of said satellite gear, thereby make the teeth groove interlock of zero-bit and said sun wheel of said satellite gear; The number of teeth of said sun wheel is Z, and then Z satisfies following formula:
Z=KN, wherein N and K are the integer greater than 2;
This all-electric wheel set also comprises active suspension, said active suspension comprise with the suspension drive motor of vehicle frame captive joint, with said suspension drive motor output shaft bonded assembly worm screw, the worm gear that cooperates with said worm screw, the screw that can rotate with said worm gear and be fixed on the suspension and can the rotation of said screw be converted into the leading screw that suspension moves up and down.
The described all-electric wheel set of the utility model, wherein, said active suspension also comprises with said suspension fixes and is located at the peripheral energy stroage spring that is in half compressive state of said worm gear.
The described all-electric wheel set of the utility model; Wherein, Said accommodation space is by surrounding with said wheel hub shape sidewall that be complementary and substrate that be used for fixing said magneto-electric machine and said wheel hub; On said substrate, the circumferential direction of the said wheel hub in edge is evenly equipped with the through hole that equates with said satellite gear quantity, and the output shaft of said magneto-electric machine is assemblied in the said through hole through bearing; Appropriate location on said substrate also is provided with the mounting hole of the output shaft that is used to install said suspension drive motor, the output shaft of said suspension drive motor through bearing installation in said mounting hole.
The described all-electric wheel set of the utility model, wherein, the peripheral region that said substrate and said wheel hub join also is provided with movable sealing structure.
The described all-electric wheel set of the utility model wherein, wherein also is equipped with position transduser on a said magneto-electric machine.
The described all-electric wheel set of the utility model, wherein, said position transduser comprises Hall switch, magnetic coder, magslip or photoelectric encoder.
The described all-electric wheel set of the utility model, wherein, the winding of all said magneto-electric machines and the lead-in wire of position transduser formation wire harness are sealed in the said wheel shaft and from said wheel shaft and pass.
The described all-electric wheel set of the utility model, wherein, said magneto-electric machine is the three-phase motor with permanent magnets of Y form coil, and all said magneto-electric machines adopt parallel connection or series connected mode to electrically connect.
The described all-electric wheel set of the utility model, wherein, this all-electric wheel set also comprises driving governor, said driving governor adopts three-phase square wave electric current or three-phase sine-wave current drives to said magneto-electric machine.
The described all-electric wheel set of the utility model, wherein, this all-electric wheel set comprises also and the coaxial mounted drg of said sun wheel that said drg comprises plate disc brake or drum brake mechanism.
Implement the all-electric wheel set of the utility model; Have following beneficial effect: the utility model adopts many magneto-electric machines, is also finally rotated by the sun wheel drive hub to sun wheel carry-over moment and rotating speed through the planetary wheel that drives on the magneto-electric machine output shaft.Many magneto-electric machines are planetary layout, and the driven in common sun wheel reaches the purpose of moment and power expansion simultaneously, and the axial dimension of motor needn't enlarge, and make full use of the space of wheel hub, have kept the basic profile characteristics of wheel hub.In addition; Adding active suspension that worm gear forms by suspension drive motor, leading screw and screw can drive the suspension motor according to the battery-driven car master controller and rotate; Make screw mandrel and screw add the worm and gear perpendicular movement that worm gear is formed; Thereby make that wheel hub can perpendicular movement with respect to suspension, reach the effect of Active Suspension.
Description of drawings
To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:
Fig. 1 is the structural representation of a kind of all-electric wheel set preferred embodiment of the utility model;
Fig. 2 is the three-dimensional structure diagram of a kind of all-electric wheel set preferred embodiment of the utility model;
Fig. 3 is the front view of a kind of all-electric wheel set preferred embodiment of the utility model;
Fig. 4 is the circuit diagram of three magneto-electric machine three phase windings parallel connections in a kind of all-electric wheel set preferred embodiment of the utility model;
Fig. 5 is the circuit diagram of three magneto-electric machine three-phase windings in series in a kind of all-electric wheel set preferred embodiment of the utility model.
The specific embodiment
As shown in Figure 1, simultaneously referring to Fig. 2 and Fig. 3.In the preferred embodiment of the utility model, this all-electric wheel set comprises wheel hub 1 and tire 2, and the central authorities of wheel hub 1 are provided with a fully enclosed accommodation space, is provided with perforation in the side wall centers of this accommodation space, is equipped with the wheel shaft 3 of hollow in the perforation through bearing.Secondly, in accommodation space, also being installed with the sun wheel 4 of passing wheel shaft 3, also is in above-mentioned accommodation space; Circumferencial direction along sun wheel 4 is evenly equipped with N satellite gear 5; Each satellite gear 5 is by being fixed on magneto-electric machine 6 driven in rotation on the vehicle frame, and then drives sun wheel 4 rotations, and in order to control the rotating speed of wheel; Reduce the axial dimension of motor, regulation sun wheel 4 is 4 with the reduction ratio of satellite gear 5: 1-6: 1 as far as possible.
Because in the preferred embodiment of the utility model, the rotating speed of wheel hub 1 is about 1000rpm, reduction ratio is defined in 4: 1～and about 6: 1, is defined in the rotating speed of electrical motor about 4000～6000rpm exactly.Generally can think: motor speed improves 4～6 times, and power of motor can improve 4～6 times, because: power of motor P=T ω; T is a moment, and ω=2 л n/60 are cireular frequencys, and T moment is constant; Motor size is constant, and ω improves, and motor horsepower output P has also just improved.The utility model improves rotating speed of motor through the deceleration of gear, and the power density of electric vehicle hub has been improved.And motor speed can not surpass 6000～10000rpm, because the iron loss and the noise of motor can increase sharply at this moment, the life-span of motor also is a problem.So reduction ratio is defined in 4: 1～about 6: 1 relatively rationally.
It should be noted that as shown in Figure 2, in when assembling; The stator zero-bit 601 of magneto-electric machine 6 is all alignd with the zero-bit 501 of satellite gear 5 with the rotor zero-bit; Thereby make the zero-bit 501 of satellite gear 5 and the teeth groove interlock of sun wheel 4, so just guaranteed sun wheel 4 when rotated, the phase place of the counter electromotive force of three phase windings of many magneto-electric machines 6 is all identical; And if the number of teeth of sun wheel 4 is Z, then should satisfy following formula between the number of the tooth number Z of sun wheel and satellite gear 5:
Z=KN, wherein N and K are the integer greater than 2.
This is because if N=3, then the counter electromotive force of three magneto-electric machines is respectively E
A1, E
A2, E
A3, phase place is identical, the series connection back:
Total electro-motive force E
a=E
A1+ E
A2+ E
A3=3E
A1If phase place is inequality, series connection back E
aThe amplitude of synthetic counter electromotive force can reduce, and phase place also can change, and synthetic electrical efficiency must descend.So, guarantee that the zero-bit alignment is very important, simultaneously; With three permanent magnet motors 6, the tooth number Z of corresponding sun wheel 4 should be 3 multiple, and this point is extremely important equally; Because if the tooth number Z of sun wheel 4 is multiples of 4; Therefore the teeth groove interlock of three satellite gears 5 and sun wheel 4 in any case all be asymmetric, can not guarantee also that the counter electromotive force phase place of three permanent magnet motor 6 three phase windings is all identical.
In addition; This all-electric wheel set also comprises active suspension, this active suspension comprise with the suspension drive motor 7 of vehicle frame captive joint, with suspension drive motor 7 output shaft bonded assembly worm screw (not shown)s, the worm gear 9 that cooperates with this worm screw, can with the screw 10 of worm gear 9 rotations and be fixed on the suspension 8 and can the rotation of screw 10 be converted into the leading screw 11 that suspension 8 moves up and down.The effect of active suspension is: the three-phase permanent magnet motor that drives usefulness through 1 suspension; Promptly hang drive motor 7, drive worm gear 9 relative leading screws 11 and rotate, leading screw 11 is fixed on the suspension 8; The rotation of suspension drive motor 7 makes suspension 8 perpendicular movements, reaches the purpose of Active Suspension.
And in order to utilize gravity and car body inertia, above-mentioned active suspension also comprises the energy stroage spring that is in half compressive state 12 of fixing and be located at worm gear 9 peripheries with suspension 8.The zero-bit of the energy stroage spring 12 of active suspension is in half compressive state, when on the active suspension during cart body, pushes away on energy stroage spring 12 power-assisteds, and when the drop-down car body of active suspension, the perpendicular movement of energy stroage spring 12 compressed energy-storages and damping car body.
Further, above-mentioned accommodation space is surrounded by the sidewall of and substrate 16 that be used for fixing magneto-electric machine 6 and wheel hub 1 that be complementary with wheel hub 1 shape.On substrate 16, be evenly equipped with the through hole that equates with satellite gear 5 quantity along the circumferential direction of wheel hub 1, the output shaft of magneto-electric machine 6 is assemblied in this through hole through bearing 15.Sun wheel 4 is rigidly connected with wheel hub 1, so wheel hub 1 can rotate with respect to the fixing substrate 16 of magneto-electric machine 6.In addition, the appropriate location on substrate 16 also is provided with the mounting hole that is used to install the output shaft that hangs drive motor 7, and the output shaft of suspension drive motor 7 passes through bearing installation in this mounting hole.
Preferably, the peripheral region that joins at aforesaid substrate 16 and wheel hub 1 also is provided with movable sealing structure 17.Movable sealing structure 17 can be the stator wire loop in stator wire loop or band labyrinth, and with one or several rubber ring on the rotor, or the seal ring of composite material constitutes movable sealing structure 17; Also can be the stator wire loop in wire loop or band labyrinth on the rotor, one or several rubber ring on the stator, or the seal ring of composite material constitutes movable sealing structure 17.Because during wheel hub 1 rotation, sun wheel 4 rotations also produce positive pressure in the fully enclosed accommodation space, thereby guaranteed the malleation motion sealing in the airtight accommodation space.
Preferably, wherein on a magneto-electric machine 6 position transduser is housed also, and position transduser can be Hall switch, magnetic coder, magslip or photoelectric encoder.
In the preferred embodiment of the utility model, the winding of all magneto-electric machines 6 and the lead-in wire of position transduser are made into wire harness and are sealed in the wheel shaft 3 of above-mentioned hollow and from wheel shaft 3 and pass.
Further, above-mentioned magneto-electric machine 6 all adopts the three-phase motor with permanent magnets of Y form coil, and all magneto-electric machines 6 adopt parallel connection or series connected mode to electrically connect.As shown in Figure 4, the three-phase motor with permanent magnets of many Y form coils can be in parallel according to U phase, V phase, W, forms one group of UVW three phase winding, perhaps also can U phase, V phase, W be in series according to mode as shown in Figure 5, forms one group of UVW three phase winding.
Because the satellite gear 5 and sun wheel 4 interlocks of many three-phase motor with permanent magnets 6 through separately, be equivalent to separately output shaft by the three-phase motor with permanent magnets of series connected, a mechanically coaxial equivalence.When sun wheel 4 rotations, the counter electromotive force phase place of many three-phase motor with permanent magnets 6 is all identical; Otherwise; When many three-phase motor with permanent magnets 6 are driven; Since separately satellite gear 5 all with sun wheel 4 interlocks; So the rotating speed of many three-phase motor with permanent magnets 6 with turn to inevitable consistent, so many three-phase motor with permanent magnets 6 are equivalent to output shaft by the three-phase motor with permanent magnets of series connected, a mechanically coaxial equivalence.
Therefore can use the three-phase motor with permanent magnets of a driving governor to an equivalence, promptly many magneto-electric machines 6 adopt three-phase square wave electric current or three-phase sine-wave current drives.
Further, sun wheel 4 can adopt metal gear, and 5 in planetary wheel can adopt any in metal gear or the non-metallic gear.And sun wheel 4 can adopt in inner gear or the external gear any, and in the preferred embodiment of the utility model, what sun wheel 4 adopted is external gear.
Understandable, this all-electric wheel set should comprise also and sun wheel 4 coaxial mounted drgs that drg generally includes brake component 13 and brake disc 14.Drg belongs to existing known technology, can adopt any one of plate disc brake or drum brake mechanism.
The utility model adopts many magneto-electric machines, is also finally rotated by the sun wheel drive hub to sun wheel carry-over moment and rotating speed through the planetary wheel that drives on the magneto-electric machine output shaft.Many magneto-electric machines are planetary layout, and the driven in common sun wheel reaches the purpose of moment and power expansion simultaneously, and the axial dimension of motor needn't enlarge, and make full use of the space of wheel hub, have kept the basic profile characteristics of wheel hub.In addition; Being also advantageous in that of many motors, multirow star gear drive mode; Output shaft is along circumference multiple spot, symmetry, evenly stressed and driving; Have stressed and mass distribution symmetry, evenly, the influence in motor gear gap is also because the average effect of Multipoint Drive is suppressed greatly, so the noise during the wheel hub high speed revolution also reduces greatly.
Series of advantages such as therefore the utlity model has the power density height, moment is big, torque fluctuations is little, noise is low, overload capacity is strong, mass distribution is even, stock utilization is high, cost is low and axial dimension is little.
In addition; Adding active suspension that worm gear forms by suspension drive motor, leading screw and screw can drive the suspension motor according to the battery-driven car master controller and rotate; Make screw mandrel and screw add the worm and gear perpendicular movement that worm gear is formed; Thereby make that wheel hub can perpendicular movement with respect to suspension, reach the effect of Active Suspension, can satisfy the indispensable functional requirement of the all-electric car of following High Performance.
Above embodiment only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement in view of the above, can not limit the protection domain of the utility model.All equalizations of being done with the utility model claim scope change and modify, and all should belong to the covering scope of the utility model claim.
Claims (10)
1. all-electric wheel set; Comprise wheel hub (1) and be located at the tire (2) of said wheel hub (1) periphery; It is characterized in that; The central authorities of said wheel hub (1) are provided with a fully enclosed accommodation space, and the side wall centers of said accommodation space is provided with perforation, the interior wheel shaft (3) that is equipped with hollow through bearing of said perforation;
In said accommodation space, be installed with the sun wheel (4) of passing said wheel shaft (3); Circumferencial direction along said sun wheel (4) is evenly equipped with N satellite gear (5); Each said satellite gear (5) rotates by being fixed in magneto-electric machine (6) driven in rotation on the vehicle frame and then driving said sun wheel (4), and the reduction ratio of said sun wheel (4) and said satellite gear (5) is 4: 1-6: 1;
The stator zero-bit (601) of said magneto-electric machine (6) and rotor zero-bit are all alignd with the zero-bit (501) of said satellite gear (5), thereby make the teeth groove interlock of zero-bit (501) Yu said sun wheel (4) of said satellite gear (5); The number of teeth of said sun wheel (4) is Z, and then Z satisfies following formula:
Z=KN, wherein N and K are the integer greater than 2;
This all-electric wheel set also comprises active suspension, said active suspension comprise with the suspension drive motor (7) of vehicle frame captive joint, with said suspension drive motor (7) output shaft bonded assembly worm screw, the worm gear (9) that cooperates with said worm screw, the screw (10) that can rotate with said worm gear (9) and be fixed on the suspension (8) and can the rotation of said screw (10) be converted into the leading screw (11) that suspension (8) moves up and down.
2. all-electric wheel set according to claim 1 is characterized in that, said active suspension also comprises the energy stroage spring that is in half compressive state (12) of fixing and be located at said worm gear (9) periphery with said suspension (8).
3. all-electric wheel set according to claim 1; It is characterized in that; Said accommodation space is surrounded by sidewall that be complementary with said wheel hub (1) shape and substrate that be used for fixing said magneto-electric machine (6) (16) and said wheel hub (1); On said substrate (16), the circumferential direction of the said wheel hub in edge (1) is evenly equipped with the through hole that equates with said satellite gear (5) quantity, and the output shaft of said magneto-electric machine (6) is assemblied in the said through hole through bearing (15); Appropriate location on said substrate (16) also is provided with the mounting hole of the output shaft that is used to install said suspension drive motor (7), the output shaft of said suspension drive motor (7) through bearing installation in said mounting hole.
4. all-electric wheel set according to claim 3 is characterized in that, said substrate (16) also is provided with movable sealing structure (17) with the peripheral region that said wheel hub (1) joins.
5. all-electric wheel set according to claim 1 is characterized in that, wherein on the said magneto-electric machine (6) position transduser is housed also.
6. all-electric wheel set according to claim 5 is characterized in that said position transduser comprises Hall switch, magnetic coder, magslip or photoelectric encoder.
7. all-electric wheel set according to claim 6 is characterized in that, the winding of all said magneto-electric machines (6) and the lead-in wire of position transduser formation wire harness are sealed in the said wheel shaft (3) and from said wheel shaft (3) and pass.
8. according to each described all-electric wheel set of claim 1-7, it is characterized in that said magneto-electric machine (6) is the three-phase motor with permanent magnets of Y form coil, and all said magneto-electric machines (6) adopt parallel connection or series connected mode to electrically connect.
9. all-electric wheel set according to claim 8 is characterized in that, this all-electric wheel set also comprises driving governor, and said driving governor adopts three-phase square wave electric current or three-phase sine-wave current drives to said magneto-electric machine (6).
10. all-electric wheel set according to claim 1 is characterized in that, this all-electric wheel set comprises also and the coaxial mounted drg of said sun wheel (4) that said drg comprises plate disc brake or drum brake mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202005302U CN202200826U (en) | 2011-11-10 | 2011-11-10 | All-electric wheel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202005302U CN202200826U (en) | 2011-11-10 | 2011-11-10 | All-electric wheel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202200826U true CN202200826U (en) | 2012-04-25 |
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ID=45964962
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202005302U Expired - Fee Related CN202200826U (en) | 2011-11-10 | 2011-11-10 | All-electric wheel assembly |
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| CN (1) | CN202200826U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104002660A (en) * | 2014-06-10 | 2014-08-27 | 山东交通学院 | Hydraulic drive driving wheel of independent drive-brake and active suspension |
| CN104281074A (en) * | 2014-03-19 | 2015-01-14 | 黄克亚 | Bicycle measuring and controlling device |
| CN106655579A (en) * | 2016-11-30 | 2017-05-10 | 青岛敏深风电科技有限公司 | Hybrid electric vehicle |
| CN107444007A (en) * | 2017-08-18 | 2017-12-08 | 华中科技大学 | A kind of electric wheel and vehicle with built-in suspension |
| CN107848403A (en) * | 2016-04-06 | 2018-03-27 | Ntn株式会社 | In-wheel motor drive unit |
-
2011
- 2011-11-10 CN CN2011202005302U patent/CN202200826U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104281074A (en) * | 2014-03-19 | 2015-01-14 | 黄克亚 | Bicycle measuring and controlling device |
| CN104002660A (en) * | 2014-06-10 | 2014-08-27 | 山东交通学院 | Hydraulic drive driving wheel of independent drive-brake and active suspension |
| CN104002660B (en) * | 2014-06-10 | 2017-02-08 | 山东交通学院 | Hydraulic drive driving wheel of independent drive-brake and active suspension |
| CN107848403A (en) * | 2016-04-06 | 2018-03-27 | Ntn株式会社 | In-wheel motor drive unit |
| CN106655579A (en) * | 2016-11-30 | 2017-05-10 | 青岛敏深风电科技有限公司 | Hybrid electric vehicle |
| CN106655579B (en) * | 2016-11-30 | 2023-07-18 | 青岛敏深风电科技有限公司 | Hybrid electric vehicle |
| CN107444007A (en) * | 2017-08-18 | 2017-12-08 | 华中科技大学 | A kind of electric wheel and vehicle with built-in suspension |
| CN107444007B (en) * | 2017-08-18 | 2018-06-26 | 华中科技大学 | A kind of electric wheel and vehicle with built-in suspension |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20141110 |
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| EXPY | Termination of patent right or utility model |