CN104052189A - Rotor structure of differential motor for electric vehicle - Google Patents
Rotor structure of differential motor for electric vehicle Download PDFInfo
- Publication number
- CN104052189A CN104052189A CN201310634645.6A CN201310634645A CN104052189A CN 104052189 A CN104052189 A CN 104052189A CN 201310634645 A CN201310634645 A CN 201310634645A CN 104052189 A CN104052189 A CN 104052189A
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- rotor
- differential
- electric vehicle
- yoke
- shaft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a rotor structure of a differential motor for an electric vehicle. When the differential motor is applied to the electric vehicle, transmission components, such as a gearbox and a main reducing gear, of the electric vehicle can be omitted, the differential motor and a rear axle are integrated, a drive system is greatly simplified, and the transmission efficiency is improved; in this way, the structure of the electric vehicle is improved, the cost of the electric vehicle is reduced, the driving range of the electric vehicle can be effectively increased, and the use range of the electric vehicle is expanded. However, the differential motor is not effectively applied on the market at present, mainly because an existing designed differential motor is hard to manufacture and high in maintenance cost. According to the rotor structure of the differential motor for the electric vehicle, a rotor of the differential motor is decomposed into a rotor portion and a differential shaft portion, each portion is independently manufactured, and then the portions are connected and matched with each other, so that the integrated rotor is formed. By the adoption of the rotor structure of the differential motor for the electric vehicle, due to the fact that the machining technology and the machining device of an existing motor are adopted, the machining difficulty is reduced, and the machining quality is guaranteed. Due to the fact that the rotor portion and the differential shaft portion can be machined and produced respectively at the same time, the production cycle is shortened, the production efficiency is improved, and the maintenance cost is reduced.
Description
Affiliated technical field
The present invention relates to a kind of electric vehicle differential speed motor rotor structure, belong to electric vehicle chassis Driving technique field and field of motor manufacturing.
Background technology
In existing driving system for electric vehicles, the drive system of vehicle adopts " drive motors+gearbox+main reducing gear+driving wheel " pattern substantially, in this system, main reducing gear (claiming again back axle or propons) has differential function, can ensure in the time that turn inside diameter travels, the inner side moving runner of electric motor car is slack-off, and the moving runner in outside accelerates, vehicle is turned smoothly, ensure vehicle driving safety.But in this system, too much because of drive disk assembly, there is a large amount of energy to be consumed, therefore, Design of Electric Vehicles personnel have proposed the simple and direct pattern of " differential speed motor+driving wheel ", have proposed revolutionary improvement to drive system of electric motor vehicle, are the developing direction of following motor vehicle type of drive.
After electric motor car uses differential speed motor to drive, can save the drive disk assembly such as gearbox, main reducing gear of electric motor car, differential speed motor and back axle are integrated, drive system is simplified greatly, improved transmission efficiency, thereby improve electric vehicle structure, reduce electric motor car cost, reduce failure rate, can effectively improve the continual mileage of vehicle, widen the range of application of motor vehicle.This kind of scheme proposed for many years, and relevant patent is also a lot, but on market, effectively do not applied all the time, and main cause has following 2 points:
The one, the existing patent about differential speed motor is mostly that whole electric vehicle designer proposes, related patent is all to imagine from the requirement of car load, discuss many from the overall structure of motor vehicle, key technology to concrete differential speed motor and key structure relate to seldom, inadequate to the further investigation of differential speed motor.
The 2nd, the differential speed motor that existing patent is discussed, all differential mechanism is direct and rotor is made of one, and differential mechanism is directly embedded in the middle of the axle of motor, and this has brought very large difficulty to manufacturing of differential speed motor.More seriously, once differential mechanism is defective in quality, differential mechanism can not take out maintain and replace, can only integral replacing rotor, this differential speed motor that employing rare earth permanent-magnetic material is made, because the shared cost of permanent magnetic material is larger, be substantially equivalent to change whole motor if change rotor, maintenance cost is too large.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, differential speed motor technology is further developed, propose a kind of electric vehicle differential speed motor rotor structure, fundamentally solve a differential speed motor manufacture difficult problem in process of production, reduce maintenance cost.
Technical solution of the present invention is: electric vehicle differential speed motor rotor is divided into rotor portion and differential shaft part, and rotor portion is mainly made up of rotor subject and yoke, is the main body that differential speed motor produces electromagnetic torque.Differential shaft is mainly made up of left and right semiaxis and differential mechanism, its Main Function be by the transmission of torque of rotor part to differential mechanism, then by after the power transmission shaft that adds export to driving wheel, differential shaft also has differential action simultaneously, meets the needs of vehicle smooth-ride.Differential shaft supports the rotor portion of differential speed motor in addition, and rotor portion is normally worked in differential speed motor, carries out energy exchange.Rotor portion and differential shaft part are distinguished processing and manufacturing, rotor portion is sleeved on differential shaft, and is connected with hole back-up ring and be linked into differential speed motor rotor entirety by key.Pull down hole with facilitating separation rotor part and differential shaft after back-up ring, repair or replace parts.
Principle of the present invention is: the torque that differential speed motor produces on rotor subject 1 by electromagnetic coupled, pass to yoke 2 by key 3, yoke 2 passes to left half axle 4 and right axle shaft 6 by connecting key 7 again, left and right semiaxis passes to differential mechanism by this torque by 4 protruding axles on differential mechanism 5 again, after differential mechanism 5 is connected with the power transmission shaft in electric motor car, by this transmission of torque to electric bicycle drive wheel, thereby drive electric motor car operation.In the time that turn inside diameter travels, the differential mechanism in differential shaft plays differential action.
The present invention's advantage is compared with prior art: the rotor of differential speed motor is made up of rotor portion and differential shaft two parts, and each several part is individual components, has again the assembly relation of interconnecting, and reaches the object that interconnects cooperation.The present invention has used processing technology and the process equipment of existing motor, has reduced difficulty of processing, has ensured crudy.Rotor portion and differential shaft can be distinguished processing simultaneously, have shortened the production cycle, have improved production efficiency.Most importantly when differential mechanism or rotor portion one side is when defective in quality, rotor portion and differential shaft can be thrown off mutually, through row modular repair or replacing, are unlikely to integral replacing differential speed motor rotor, have reduced maintenance cost.
Brief description of the drawings
Fig. 1 is a kind of electric vehicle differential speed motor rotor structure schematic diagram of the present invention.
Fig. 2 is the yoke schematic diagram of a kind of electric vehicle differential speed motor rotor structure of the present invention.
Fig. 3 is the left half axle schematic diagram of a kind of electric vehicle differential speed motor rotor structure of the present invention.
Fig. 4 is the rotor portion schematic diagram of a kind of electric vehicle differential speed motor rotor structure of the present invention.
Fig. 5 is the differential shaft schematic diagram of a kind of electric vehicle differential speed motor rotor structure of the present invention.
Fig. 6 is the differential speed motor schematic diagram after a kind of electric vehicle differential speed motor rotor structure assembling of the present invention.
Embodiment
As shown in Figure 1, electric vehicle differential speed motor rotor is mainly by rotor subject 1, yoke 2, key 3, left half axle 4, differential mechanism 5, right axle shaft 6, connecting key 7, for hole, back-up ring 8, fastening bolt 9, end plate 10, connecting bolt 11, bearing 12 etc. form.
Processing technology of the present invention is as follows:
Rotor subject 1 by the requirement processing and fabricating of design of electrical motor after, the inner circle of processing rotor main body 1 makes it coordinate with the excircle dimension of yoke 2, and processes the keyway of the key 3 coordinating with yoke 2 at the internal circular surfaces of rotor subject 1.
As shown in Figure 2, process the cylindrical of yoke 2 and the inner circle dimensional fits of rotor subject 1, on the cylindrical of yoke 2, have the keyway of the key 3 coordinating with rotor subject 1.The inner circle of processing yoke 2 coordinates with the excircle dimension that right axle shaft 6 forms with left half axle 4, the keyway that has the connecting key 7 that the cylindrical that forms with right axle shaft 6 with left half axle 4 coordinates in the inner circle of yoke 2, this keyway will ensure that differential shaft packs into or exits from rotor portion one end.On the inner surface of yoke 2, also to process the annular groove of placed hole back-up ring 8, process the silk hole that end plate 10 is installed in the both ends of the surface of yoke 2.
As shown in Figure 3, first left half axle 4 and right axle shaft 6 will process the seam and the connecting filament hole that on the mating surface of laying the differential mechanism chamber of differential mechanism 5, inner via hole, left half axle 4 and right axle shaft 6 that power transmission shaft passes through, process the location that cooperatively interacts, when inner via hole assembles for vehicle, power transmission shaft is by being connected with differential mechanism, and therefore this inner via hole diameter is greater than the external diameter of power transmission shaft.Then with fastening bolt 9, left half axle 4 and right axle shaft 6 are tightened to an entirety, entirety is carried out fine finishining left half axle 4 makes it coordinate with yoke 2 endoporus with the cylindrical of right axle shaft 6, on left half axle 4 and right axle shaft 6, process the bearing gear of laying bearing 12, process in left half axle 4 and the joint portion of right axle shaft 64 circular holes laying differential mechanism 5 protruding axles again, on the cylindrical of left half axle 4 and right axle shaft 6, process the keyway of laying connecting key 7.
It is of the present invention that to turn allotment of labor's skill as follows:
Rotor subject 1 is closely enclosed within yoke 2 by key 3, then connects into an entirety through two end-stopping plates 10, connecting bolt 11, consists of rotor portion, as shown in Figure 4.
Unclamp fastening bolt 9, left half axle 4 separates with right axle shaft 6, and it is middle with right axle shaft 6 that differential mechanism 5 packs left half axle 4 into, forms a whole by fastening bolt 9 is fastening, forms differential shaft, as shown in Figure 5.
The rotor portion being made up of rotor subject 1 and yoke 2 is sleeved on by key 7 on the differential shaft being made up of left half axle 4 differential mechanism 5 right axle shafts 6, key 7 carries out radial location transmitting torque, use back-up ring 8 to carry out axial location by hole, last two ends are installed bearing 12 and are formed complete differential speed motor rotor, as shown in Figure 1.
Differential speed motor rotor becomes differential speed motor with parts overall package such as its differential speed motor stator, electric motor end cap, position transducers, as Fig. 6.Left and right power transmission shaft is connected with differential mechanism by left and right semiaxis inner via hole, driving torque.In the time of vehicle straight-line travelling, differential speed motor rotor and left and right power transmission shaft synchronous speed are rotated, and the driving wheel rotating speed of vehicle both sides is identical.In the time that turn inside diameter needs differential, the planetary gear of differential mechanism and spider gear rotate, and left and right power transmission shaft and rotor relatively rotate, and the rotating speed of left and right two power transmission shafts is unequal, drive the speed of electric motor car left and right wheel turns inconsistent, and turn inside diameter is travelled.
When differential mechanism 5 or rotor portion is defective in quality when needing repairing or changing, unload hole back-up ring 8 and just differential shaft can be separated with rotor portion, change or keep in repair, avoid integral replacing rotor.
Claims (4)
1. an electric vehicle differential speed motor rotor structure, mainly by rotor subject (1), yoke (2), key (3), left half axle (4), differential mechanism (5), right axle shaft (6), connecting key (7), back-up ring for hole (8), fastening bolt (9), end plate (10), connecting bolt (11), the compositions such as bearing (12), it is characterized in that: rotor subject (1) is contained in yoke (2) by key (3) adapter sleeve, again through two end-stopping plates (8), connecting bolt (11) connects into an entirety, become rotor portion, by fastening bolt (9), left half axle (4), differential mechanism (5) are tightened to an entirety with right axle shaft (6), form differential shaft, the rotor portion being formed by rotor subject (1) and yoke (2), be sleeved on by connecting key (7) on the differential shaft being formed by left half axle (4) and right axle shaft (6) and differential mechanism (5), carry out axial location by hole back-up ring (8) again, install the complete differential speed motor rotor of the rear composition of bearing (12).
2. a kind of electric vehicle differential speed motor rotor structure according to claim 1, it is characterized in that: rotor subject (1) by the requirement processing and fabricating of design of electrical motor after, the inner circle of processing rotor main body (1) makes it coordinate with the cylindrical of yoke (2), and processes the keyway of the key (3) coordinating with yoke (2) at the internal circular surfaces of rotor subject (1).
3. a kind of electric vehicle differential speed motor rotor structure according to claim 1, it is characterized in that: the inner circle dimensional fits of the cylindrical of yoke (2) and rotor subject (1), on the cylindrical of yoke (2), have the keyway of the key (3) coordinating with rotor subject (1), the inner circle of yoke (2) coordinates with the excircle dimension that right axle shaft (6) forms with left half axle (4), in the inner circle of yoke (2), have the keyway of the connecting key (7) coordinating with the cylindrical of right axle shaft (6) formation with left half axle (4), this keyway will ensure that differential shaft packs into or exits from rotor portion one end, on the inner surface of yoke (2), also to process the annular groove of back-up ring for placed hole (8), process the silk hole that end plate (10) is installed in the both ends of the surface of yoke (2).
4. a kind of electric vehicle differential speed motor rotor structure according to claim 1, it is characterized in that: left half axle (4) processes the differential mechanism chamber of laying differential mechanism (5) separately with right axle shaft (6), the inner via hole that power transmission shaft passes through, cooperation seam and connecting filament hole that both connect, then left half axle (4) and right axle shaft (6) are tightened to an entirety by fastening bolt (9), entirety is carried out fine finishining left half axle (4) makes it coordinate with the endoporus of yoke (2) with the cylindrical of right axle shaft (6), on left half axle (4) and right axle shaft (6), process the bearing gear of laying bearing (12), process in left half axle (4) and the joint portion of right axle shaft (6) 4 circular holes laying the protruding axle of differential mechanism (5), on the cylindrical of left half axle (4) and right axle shaft (6), process the keyway of laying connecting key (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310634645.6A CN104052189A (en) | 2013-11-26 | 2013-11-26 | Rotor structure of differential motor for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310634645.6A CN104052189A (en) | 2013-11-26 | 2013-11-26 | Rotor structure of differential motor for electric vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN104052189A true CN104052189A (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310634645.6A Pending CN104052189A (en) | 2013-11-26 | 2013-11-26 | Rotor structure of differential motor for electric vehicle |
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| CN (1) | CN104052189A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186770A (en) * | 2015-08-01 | 2015-12-23 | 谷伟 | Differential dual-output motor |
| CN107342672A (en) * | 2016-05-01 | 2017-11-10 | 李启飞 | Powered magnetic differential device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004037266A1 (en) * | 2004-07-31 | 2006-02-16 | Linde Ag | Drive axle especially for land vehicles has electric motor and differential integrated into the electric motor rotor and two drive shafts with reduction drive gears |
| CN201191795Y (en) * | 2008-04-30 | 2009-02-04 | 上海中上汽车科技有限公司 | Differential mechanism electric motor |
| CN101521431A (en) * | 2009-03-10 | 2009-09-02 | 江西江铃汽车集团实业有限公司 | Motor with double output shaft sleeves and differential function |
| CN201388111Y (en) * | 2009-04-22 | 2010-01-20 | 邹本武 | Permanent magnet motor with built-in compensating gear |
| CN203014575U (en) * | 2012-12-19 | 2013-06-19 | 耀马车业(中国)有限公司 | Brushless motor with built-in differential mechanism |
| CN103299516A (en) * | 2011-01-11 | 2013-09-11 | 株式会社捷太格特 | Device for transmitting driving force of motors |
-
2013
- 2013-11-26 CN CN201310634645.6A patent/CN104052189A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004037266A1 (en) * | 2004-07-31 | 2006-02-16 | Linde Ag | Drive axle especially for land vehicles has electric motor and differential integrated into the electric motor rotor and two drive shafts with reduction drive gears |
| CN201191795Y (en) * | 2008-04-30 | 2009-02-04 | 上海中上汽车科技有限公司 | Differential mechanism electric motor |
| CN101521431A (en) * | 2009-03-10 | 2009-09-02 | 江西江铃汽车集团实业有限公司 | Motor with double output shaft sleeves and differential function |
| CN201388111Y (en) * | 2009-04-22 | 2010-01-20 | 邹本武 | Permanent magnet motor with built-in compensating gear |
| CN103299516A (en) * | 2011-01-11 | 2013-09-11 | 株式会社捷太格特 | Device for transmitting driving force of motors |
| CN203014575U (en) * | 2012-12-19 | 2013-06-19 | 耀马车业(中国)有限公司 | Brushless motor with built-in differential mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186770A (en) * | 2015-08-01 | 2015-12-23 | 谷伟 | Differential dual-output motor |
| CN107342672A (en) * | 2016-05-01 | 2017-11-10 | 李启飞 | Powered magnetic differential device |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140917 |