CN203005086U - Electric car coaxial direct connection type drive axle assembly - Google Patents
Electric car coaxial direct connection type drive axle assembly Download PDFInfo
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- CN203005086U CN203005086U CN 201220736333 CN201220736333U CN203005086U CN 203005086 U CN203005086 U CN 203005086U CN 201220736333 CN201220736333 CN 201220736333 CN 201220736333 U CN201220736333 U CN 201220736333U CN 203005086 U CN203005086 U CN 203005086U
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Abstract
An electric car coaxial direct connection type drive axle assembly solves the problem that an exiting whole type electric drive axle structure can not meet requirements of matching chassises of all car models. The electric car coaxial direct connection type drive axle assembly comprises an axle housing, a drive motor, a reducer assembly, a differential assembly and a left and right axle shaft brake assembly, wherein the axle housing, the drive motor, the reducer assembly, the differential assembly and the left and right axle shaft brake assembly are assembled in the axle housing. The electric car coaxial direct connection type drive axle assembly is characterized in that the axle housing comprises cylinder-shaped housing assemblies and a left and right axle housing tube assembly; the drive motor, the reducer assembly and the differential assembly are assembled into the same cylinder-shaped housing assembly; a planetary gear carrier of the reducer assembly of a planetary reducer mechanism is connected together with spilt type differential case of the differential assembly, and two axle shaft gears of the differential assembly are respectively connected with a left axle shaft and a right axle shaft of the left and right axle shaft brake assembly in a spline fitting mode. The electric car coaxial direct connection type drive axle assembly is compact in structure, reasonable in design, uniform in load distribution, and light in mass, and meanwhile has driving, reducing and differential functions, and meets the requirements of matching with chassises of all car models.
Description
Technical field
The utility model relates to a kind of electric automobile driving apparatus, a kind of speed reducer assembly of integrated type electric drive axle and the drive motor coaxial associated mode drive axle of the electronlmobil assembly being arranged to optimize structure particularly, it is applicable to mate dissimilar electric automobile chassis.
Background technology
At present, the drive axle on common electric automobile chassis mainly is divided into two kinds, and a kind of is the independent bridge packet mode electric drive axle that the independent suspension electronlmobil adopts, and generally is used on electrocar.Another kind is to be used on the electronlmobil that adopts the integrated type electric drive axle, generally is used on Minitype electric lorry and electric coach.The scheme that the integrated type electric drive axle that uses in batches in market adopts mostly is greatly drive motor and the non-coaxial arrangement scheme of driving axle housing.What have directly is connected the drive motor output flange with the main tooth flange of traditional bevel gear driving bridge, drive motor and driving axle housing are arranged vertically.Also have the cylindric spiral gear that makes into traditional finishing bevel gear cuter engagement to mesh, the drive motor output flange is connected with the small column helical wheel, and drive motor and driving axle housing are arranged in parallel.These two kinds of arrangements all can cause the center of gravity of drive motor and the axis of axle housing that certain departing from arranged, and for fear of movement interference, drive motor can't be connected with vehicle frame.This just causes drive motor to be actually to be in the work of cantilever beam state.Axle housing bears the unnecessary moment of torsion that comes from drive motor constantly, causes the early stage torsional fatigue of axle housing to lose efficacy.As the electric drive axle of unsprung weight, its unsure state and excessive quality will directly affect the flexibility index of car load simultaneously.
Be CN102717707A's in the patent publication No. " electric automobile drive axle " in, disclosed is a kind of integrated type electric drive axle structure.The driving speed-changing mechanism that it adopts drive motor, speed-changing mechanism, box of tricks to form, although realize coaxial with the axis of axle housing the axis of drive motor, can reduce the unbalance loading of axle housing and on the impact of car load ride comfort, but, can find out from its accompanying drawing, this driving speed-changing mechanism is take sun wheel as input, planetary carrier is fixed, external toothing is output, and the radial dimension of required planet circular system is excessive, can not satisfy the requirement of car load road clearance.Simultaneously to bear moment of torsion as the mouth of main reduction gear very large for external toothing, affected greatly robust motion under its suspended state.When adopting Helical gear Transmission, the axial force that external toothing produces in the time of can't the balance transmission causes external toothing and differential casing connector stressing conditions very abominable.If connector has excessive distortion can make the gear engagement not in its work area, stationarity and noise objective will descend.Its lubrication problem that is positioned at the planetary gear set of axle housing top is difficult to solve in addition, and differential casing adopts integral structure, has increased the axial length of vehicle bridge drive part.Therefore, the above-mentioned problems that existing integrated type electric drive axle structure exists can't satisfy the requirement on the various vehicles of coupling chassis, and impact is applied.
The utility model content
The purpose of the utility model patent is to provide the coaxial associated mode drive axle of a kind of electronlmobil assembly, solve existing integrated type electric drive axle structure and had the problem that can't satisfy the chassis requirement of the various vehicles of coupling, its compact conformation, reasonable in design, load is evenly distributed, quality is relatively light, possesses simultaneously driving, deceleration, differential function, is conducive to satisfy the requirement of the various electric automobile chassis of coupling.
the technical scheme that the utility model patent adopts is: the coaxial associated mode drive axle of this electronlmobil assembly comprises axle housing, be assembled in the drive motor in axle housing, speed reducer assembly, differential assembly and a left side, the right axle shaft brake assembly, its technical essential is: described axle housing comprises barrel-type casing assembly and a left side, right axle housing pipe assembly, the drive motor rotor that is assembled in barrel-type casing assembly one side adopts hollow shaft structure, speed reducer assembly, differential assembly is assembled in barrel-type casing assembly opposite side, the dissection type differential gear box of the planetary gear carrier of speed reducer assembly and differential assembly links together, the sun wheel of speed reducer assembly is meshed with mafor planet gear, mafor planet gear is connected on the small planetary gear axle by spline fitted, sun wheel is connected in the hollow shaft mouth of drive motor rotor by spline fitted, small planetary gear is meshed with internal tooth outer ring on being fixed on the barrel-type casing assembly, two axle side gears of differential assembly respectively with a left side, the left side of right axle shaft brake assembly, right axle shaft is linked together with spline fitted.
The planetary gear carrier that described speed reducer assembly comprises the sun wheel of the hollow shaft mouth that is connected in the drive motor rotor, the mafor planet gear that is meshed with sun wheel, be connected in small planetary gear on same axle with mafor planet gear, be fixed on internal tooth outer ring on the barrel-type casing assembly, link together with the dissection type differential gear box of differential assembly.
Described differential assembly comprises the dissection type differential gear box, is fixed on the interior diff spider gear shaft of dissection type differential gear box, is assembled in the diff star-wheel on the diff spider gear shaft, the axle side gear that is meshed with the diff star-wheel.
Advantage and the good effect that the utlity model has are: because the utility model is improved on the architecture basics of integrated type electric drive axle, so the unbalance loading that reduces axle housing that it has the integrated type electric drive axle reaches the smooth-going sex advantage of car load.It adopts rotor the drive motor of hollow shaft structure and the speed reducer assembly that adopts planetary gear speed reducing mechanism to be assembled in same barrel-type casing assembly, left and right half can be passed the axle side gear spline fitted of quill shaft and differential assembly, consist of coaxial associated mode drive axle assembly, cleverly the drive motor housing is fused into the part of axle housing, not only save material, also fabulous assurance servo-electric motor hollow shafting rotor and poor deceleration system right alignment, reduce assembly error to the impact of system accuracy.Therefore, its compact conformation, reasonable in design, load is evenly distributed, and quality is relatively light, possesses simultaneously driving, deceleration, differential function, can also realize that the electronlmobil deceleration increases torsion effect.Because this coaxial associated mode drive axle assembly is inputted by sun wheel, planetary wheel carrier output is therefore when obtaining than big speed ratio, realize that power input shaft and output shaft are coaxial.Adopt the differential gear box of split type structure, diff star-wheel on the diff spider gear shaft, the axle side gear that is meshed with the diff star-wheel are arranged easily, utilize planetary gear carrier and dissection type differential gear box that speed reducer assembly and differential assembly are linked together, dwindled the axial length of vehicle bridge drive part, and can not cause the radius of vehicle bridge excessive, affect the ground Clearance.
In sum, the utility model can not only make the electronlmobil that configures have increases dynamic property, arrange easily, the chassis is without plurality of advantages such as unnecessary unbalance loading, unsprung weight reduce, and solved the problem that existing integrated type electric drive axle structure existence can't be satisfied the chassis requirement of the various vehicles of coupling, be conducive to satisfy the requirement of the various electric automobile chassis of coupling.
Description of drawings:
Below in conjunction with accompanying drawing, the utility model patent is further described:
Fig. 1 is electronic rear driving axle assembly
Fig. 2 is speed reducer assembly
Fig. 3 is differential assembly
sequence number explanation in figure: 1 left half axle brake assembly, 2 right axle shaft brake assemblys, 3 left axle housing pipe assemblies, 4 right axle housing pipe assemblies, 5 barrel-type casing assemblies, 6 drive motor, 7 speed reducer assemblies, 8 differential assemblies, 9 left half axles, 10 right axle shafts, 11 mafor planet gears, 12 planetary gear carriers, 13 hollow shaft mouths, 14 sun wheels, 15 small planetary gears, 16 internal tooth outer rings, 17 dissection type differential gear boxs, 18 diff star-wheels, 19 axle side gears, 20 diff spider gear shafts.
The specific embodiment
Describe the concrete structure of the utility model patent in detail according to Fig. 1 ~ 3.The coaxial associated mode drive axle of this electronlmobil assembly is improved on the architecture basics of integrated type electric drive axle.It comprises axle housing, is assembled in the drive motor 6 in axle housing, speed reducer assembly 7, differential assembly 8, and left and right half brake assembly 1, the parts such as 2.Its intermediate axle shell comprises barrel-type casing assembly 5 and left and right axle housing pipe assembly 3,4.The parts such as planetary gear carrier 12 that speed reducer assembly 7 comprises the sun wheel 14 of the hollow shaft mouth 13 that is connected in drive motor 6 rotors, the mafor planet gear 11 that is meshed with sun wheel 14, be connected in small planetary gear 15 on same axle with mafor planet gear 11, be fixed on internal tooth outer ring 16 on barrel-type casing assembly 5, link together with the dissection type differential gear box 17 of differential assembly 7.Differential assembly 8 comprises dissection type differential gear box 17, is fixed on the interior diff spider gear shaft 20 of dissection type differential gear box 17, is assembled in the diff star-wheel 18 on diff spider gear shaft 20, the parts such as axle side gear 19 that are meshed with diff star-wheel 18.
When the electric automobile chassis coupling has the coaxial associated mode drive axle of the electronlmobil assembly of These characteristics, after drive motor 6 energisings, output torque drives sun wheel 14 by hollow shaft mouth 13, sun wheel 14 evenly passes to power mafor planet gear 11, the small planetary gear 15 that rotates around sun wheel 14, and small planetary gear 15 is meshed with internal tooth outer ring 16 on being fixed on barrel-type casing assembly 5.By sun wheel 14 and mafor planet gear 11 and the small planetary gear 15 speed ratio relation with internal tooth outer ring 16, the low torque axis of high rotating speed of realizing sun wheel 14 changes the low rotation speed large torque of small planetary gear 15 and fixedly planetary gear carrier 12 outputs of small planetary gear 15 into and exports.Captive joint with planetary gear carrier 12 and dissection type differential gear box 17 by small planetary gear 15, with transmission of power in differential assembly 8.Dissection type differential gear box 17 in differential assembly 8 arrives diff star-wheel 18 by diff spider gear shaft 20 with transmission of power.Diff star-wheel 18 with transmission of power to the axle side gear 19 that is fixed in dissection type differential gear box 17.Two axle side gears 19 respectively with left and right half 9,10 with spline fitted, transfer torque in the wheel (not shown) that is fixed on left and right half 9,10 and realize Vehicle Driving Cycle.Vehicle realizes that by the rotation speed change of drive motor 6 height of automobile speed changes.If the both sides wheel (not shown) of automobile is different from traction, pass through diff star-wheel 18 and axle side gear 19 around self axis autobiography, satisfy the requirement of differential speed of vehicle.
Claims (3)
1. the coaxial associated mode drive axle of electronlmobil assembly, comprise axle housing, be assembled in the drive motor in axle housing, speed reducer assembly, differential assembly and a left side, the right axle shaft brake assembly, it is characterized in that: described axle housing comprises barrel-type casing assembly and a left side, right axle housing pipe assembly, the drive motor rotor that is assembled in barrel-type casing assembly one side adopts hollow shaft structure, speed reducer assembly, differential assembly is assembled in barrel-type casing assembly opposite side, the dissection type differential gear box of the planetary gear carrier of speed reducer assembly and differential assembly links together, the sun wheel of speed reducer assembly is meshed with mafor planet gear, mafor planet gear is connected on the small planetary gear axle by spline fitted, sun wheel is connected in the hollow shaft mouth of drive motor rotor by spline fitted, small planetary gear is meshed with internal tooth outer ring on being fixed on the barrel-type casing assembly, two axle side gears of differential assembly respectively with a left side, the left side of right axle shaft brake assembly, right axle shaft is linked together with spline fitted.
2. the coaxial associated mode drive axle of electronlmobil according to claim 1 assembly is characterized in that: the planetary gear carrier that described speed reducer assembly comprises the sun wheel of the hollow shaft mouth that is connected in the drive motor rotor, the mafor planet gear that is meshed with sun wheel, be connected in small planetary gear on same axle with mafor planet gear, be fixed on internal tooth outer ring on the barrel-type casing assembly, link together with the dissection type differential gear box of differential assembly.
3. the coaxial associated mode drive axle of electronlmobil according to claim 1 assembly is characterized in that: described differential assembly comprises the dissection type differential gear box, be fixed on diff spider gear shaft in the dissection type differential gear box, be assembled in the diff star-wheel on the diff spider gear shaft, the axle side gear that is meshed with the diff star-wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220736333 CN203005086U (en) | 2012-12-28 | 2012-12-28 | Electric car coaxial direct connection type drive axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220736333 CN203005086U (en) | 2012-12-28 | 2012-12-28 | Electric car coaxial direct connection type drive axle assembly |
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| Publication Number | Publication Date |
|---|---|
| CN203005086U true CN203005086U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220736333 Expired - Fee Related CN203005086U (en) | 2012-12-28 | 2012-12-28 | Electric car coaxial direct connection type drive axle assembly |
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| CN (1) | CN203005086U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029577A (en) * | 2012-12-28 | 2013-04-10 | 辽宁曙光汽车集团股份有限公司 | Coaxial direct-connection type drive axle assembly of electric automobile |
| CN104354591A (en) * | 2014-10-27 | 2015-02-18 | 杭州杭叉桥箱有限公司 | Drive axle with main speed reducer with planetary structure |
| WO2015039611A1 (en) * | 2013-09-22 | 2015-03-26 | 格源动力有限公司 | Coaxial motor variable torque differential assembly |
| WO2015039610A1 (en) * | 2013-09-22 | 2015-03-26 | 格源动力有限公司 | Coaxial motor having one gear shift |
| CN105539112A (en) * | 2015-12-28 | 2016-05-04 | 北京新能源汽车股份有限公司 | Power assembly and vehicle provided with same |
| CN106515404A (en) * | 2016-12-27 | 2017-03-22 | 重庆博迪威电动汽车有限责任公司 | Electrombile power transmission integrated system |
| CN108340737A (en) * | 2018-04-04 | 2018-07-31 | 清研新能源汽车工程中心（襄阳）有限公司 | A kind of electric axle assembly |
| CN108859710A (en) * | 2018-09-05 | 2018-11-23 | 阎国才 | Electric vehicle differential drive mechanism improves structure |
| CN110962506A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| CN110962507A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| CN110962505A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| CN111098639A (en) * | 2018-10-25 | 2020-05-05 | 合肥工业大学 | Straight beam structure axle with hollow separated cell shells |
-
2012
- 2012-12-28 CN CN 201220736333 patent/CN203005086U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029577A (en) * | 2012-12-28 | 2013-04-10 | 辽宁曙光汽车集团股份有限公司 | Coaxial direct-connection type drive axle assembly of electric automobile |
| CN103029577B (en) * | 2012-12-28 | 2015-09-09 | 辽宁曙光汽车集团股份有限公司 | The coaxial associated mode driving axis of electronlmobil |
| WO2015039611A1 (en) * | 2013-09-22 | 2015-03-26 | 格源动力有限公司 | Coaxial motor variable torque differential assembly |
| WO2015039610A1 (en) * | 2013-09-22 | 2015-03-26 | 格源动力有限公司 | Coaxial motor having one gear shift |
| CN104354591A (en) * | 2014-10-27 | 2015-02-18 | 杭州杭叉桥箱有限公司 | Drive axle with main speed reducer with planetary structure |
| CN105539112A (en) * | 2015-12-28 | 2016-05-04 | 北京新能源汽车股份有限公司 | Power assembly and vehicle provided with same |
| CN106515404A (en) * | 2016-12-27 | 2017-03-22 | 重庆博迪威电动汽车有限责任公司 | Electrombile power transmission integrated system |
| CN106515404B (en) * | 2016-12-27 | 2019-03-15 | 重庆博迪威电动汽车有限责任公司 | The transmission integrated system of electrical vehicular power |
| CN108340737A (en) * | 2018-04-04 | 2018-07-31 | 清研新能源汽车工程中心（襄阳）有限公司 | A kind of electric axle assembly |
| CN108859710A (en) * | 2018-09-05 | 2018-11-23 | 阎国才 | Electric vehicle differential drive mechanism improves structure |
| CN110962506A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| CN110962507A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| CN110962505A (en) * | 2018-09-30 | 2020-04-07 | 比亚迪股份有限公司 | Drive axle and vehicle with same |
| CN111098639A (en) * | 2018-10-25 | 2020-05-05 | 合肥工业大学 | Straight beam structure axle with hollow separated cell shells |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130619 Termination date: 20151228 |
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| EXPY | Termination of patent right or utility model |