CN207931484U - Coaxial-type electric drive axle - Google Patents
Coaxial-type electric drive axle Download PDFInfo
- Publication number
- CN207931484U CN207931484U CN201820145625.0U CN201820145625U CN207931484U CN 207931484 U CN207931484 U CN 207931484U CN 201820145625 U CN201820145625 U CN 201820145625U CN 207931484 U CN207931484 U CN 207931484U
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- output shaft
- level
- bridge tube
- motor
- shaft
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Abstract
The utility model discloses a kind of coaxial-type electric drive axles, including motor, retarder and bridge tube；The motor shaft and rotor that motor includes shell, is set in shell；Retarder includes gear drive group, differential mechanism, the first output shaft, the second output shaft；Bridge tube includes the first bridge tube and the second bridge tube；Motor shaft and rotor rigid connection, shell and the first bridge tube, the second bridge tube pass through flanged joint, one end of gear drive group is connect with motor shaft by spline, and the other end and the differential mechanism of gear drive group are rigidly connected, and differential mechanism is connect with the first output shaft, the second output shaft by spline；Motor shaft is hollow-core construction, and the first output shaft, the second output shaft are arranged in the both ends of the motor shaft of hollow-core construction respectively, and motor shaft and the first output shaft, the second output shaft, the first bridge tube, the second bridge tube are coaxially disposed.The utility model avoids drive axle and generates torsion shake in use, avoids vehicle electric shock or phenomenon of nodding, improves vehicle comfort and stability.
Description
Technical field
The utility model belongs to electric vehicle engineering field more particularly to a kind of coaxial-type electric drive axle.
Background technology
Currently, electronic automobile-used drive axle is made of 3 motor, retarder and bridge tube components, motor and retarder hang over bridge
Pipe is outer, as shown in Figure 1.
Motor is the power source of drive axle, after energization, the rotor 2 and motor shaft 1 that are rigidly connected integral while being rotated, defeated
Go out torque and rotating speed；Level-one driving gear shaft 3 is connect by spline with motor shaft 1, and power input is obtained；
Level-one driving gear is engaged with level-one driven gear 4, and level-one driven gear 4 is driven to rotate；Level-one driven gear 4 with
Two level driving gear shaft 5 is rigidly connected, to which two level driving gear rotates together；Two level driving gear and two level driven gear 6
Engagement drives two level driven gear 6 to rotate；Two level driven gear 6 is rigidly connected with differential mechanism 7, and differential mechanism 7 is driven to rotate；Difference
Fast device 7 is connect with output shaft 8 by spline, is driven semiaxis rotation, is realized power output.Bridge tube 9 passes through damping spring and vehicle body
Connection supports car body weight.
The defect of the prior art：
Motor and retarder are arranged in outside 8 center line of output shaft, can generate gravitational moment to the center line, drive axle is made to generate
Shake is turned round, automobile electric shock is caused or phenomenon of nodding, comfort is poor.
Utility model content
The purpose of this utility model is to provide a kind of coaxial-type electric drive axles, it is intended to avoid drive axle using process
Shake is turned round in middle generation, avoids vehicle electric shock or phenomenon of nodding, and then improves vehicle comfort and stability.
The utility model is realized in this way a kind of coaxial-type electric drive axle, including：Motor, retarder, Yi Jiqiao
Pipe；
Wherein, the motor include shell, the motor shaft and rotor that are set in the shell；The retarder includes tooth
Take turns transmission group, differential mechanism, the first output shaft and the second output shaft；The bridge tube includes the first bridge tube and the second bridge tube；
The motor shaft and rotor rigid connection, the shell pass through flange with first bridge tube, the second bridge tube
Connection, one end of the gear drive group are connect with the motor shaft by spline, the other end of the gear drive group and institute
Differential mechanism rigid connection is stated, the differential mechanism is connect with first output shaft, the second output shaft by spline；
The motor shaft is hollow-core construction, and first output shaft, the second output shaft are arranged in the hollow-core construction respectively
Motor shaft both ends, and the motor shaft and first output shaft, the second output shaft, the first bridge tube, the second bridge tube are coaxial
Setting.
The further technical solution of the utility model is that the centre position of first output shaft is provided with bearing.
The further technical solution of the utility model is that motor shaft oil sealing is provided on the motor shaft, described first
The first output shaft oil sealing is provided on output shaft.
The further technical solution of the utility model is that the gear drive group includes：Level-one driving gear, level-one from
Moving gear, two level driving gear shaft, two level driving gear and two level driven gear；
Wherein, the level-one driving gear passes through spline and the motor axis connection；The level-one driving gear with it is described
Level-one driven gear engages；The two level driving gear shaft rigidly connects with the level-one driven gear, two level driving gear respectively
It connects；The two level driving gear is engaged with the two level driven gear；The two level driven gear rigidly connects with the differential mechanism
It connects；The differential mechanism exports axis connection with first output shaft, second respectively by spline.
The further technical solution of the utility model is that the coaxial-type electric drive axle is applied to electric vehicle, institute
Bridge tube is stated to connect with body of a motor car by damping spring.
The utility model has the beneficial effects that：The utility model coaxial-type electric drive axle will be through the above technical solutions, will
The motor shaft and first output shaft, the second output shaft, the first bridge tube, the second bridge tube are coaxially disposed, make the motor and
The center of gravity of retarder is located on the center line of first bridge tube and the second bridge tube, to first bridge tube and the second bridge tube center
The gravitational moment of line is zero, generates torsion shake in use so as to avoid drive axle, avoids vehicle electric shock or phenomenon of nodding,
And then improve vehicle comfort and stability.
Description of the drawings
Fig. 1 is the structural schematic diagram of electric drive axle in the prior art；
Fig. 2 is the structural schematic diagram of the coaxial electric drive axle preferred embodiment of the utility model；
Fig. 3 is the enlarged diagram in the portions A in Fig. 2.
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific implementation mode
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.
Fig. 2 to Fig. 3 shows the coaxial electric drive axle in the utility model preferred embodiment, the coaxial electric drive axle
Motor shaft and the first output shaft, the second output shaft, the first bridge tube, the second bridge tube are coaxially disposed, the weight of motor and retarder is made
The heart is located on the center line of the first bridge tube and the second bridge tube, and the gravitational moment to the first bridge tube and the second bridge tube center line is zero, from
And avoid drive axle and generate torsion shake in use, avoid vehicle electric shock or phenomenon of nodding, and then improve vehicle and relax
Adaptive and stability.
Specifically, Fig. 2 is the structural schematic diagram of the coaxial electric drive axle preferred embodiment of the utility model, Fig. 3 is in Fig. 2
The enlarged diagram in the portions A.
As shown in Figure 2 to Figure 3, the coaxial electric drive axle of the present embodiment includes motor, retarder and bridge tube.
It should be noted that the coaxial electric drive axle of the present embodiment be applied to electric vehicle, bridge tube by damping spring with
Body of a motor car connects, to support car body weight.
The motor shaft 6 and rotor 7 that in the present embodiment, motor includes shell, is set in shell；Retarder includes that gear passes
Dynamic group, differential mechanism 10, the first output shaft 2 and the second output shaft 11；Bridge tube includes the first bridge tube 1 and the second bridge tube 12.
Motor shaft 6 and rotor 7 are rigidly connected, and by flanged joint, gear passes for shell and the first bridge tube 1, the second bridge tube 12
One end of dynamic group is connect with motor shaft 6 by spline, and the other end and the differential mechanism 10 of gear drive group are rigidly connected, differential mechanism 10
It is connect by spline with the first output shaft 2, the second output shaft 11.
Motor shaft 6 is hollow-core construction, and the first output shaft 2, the second output shaft 11 are arranged in the motor shaft 6 of hollow-core construction respectively
Both ends, and motor shaft 6 and the first output shaft 2, the second output shaft 11, the first bridge tube 1, the second bridge tube 12 are coaxially disposed.
As shown in figure 3, in the present embodiment, the first output shaft 2 uses a monoblock type semiaxis, from the motor shaft of hollow-core construction
It being passed through among 6, unilateral gap is smaller, when the first bridge tube 1 bears car weight deformation, the first bridge tube 1 generation flexural buckling, first
Output shaft 2 can be also bent, and the endoporus of the first output shaft 2 and motor shaft 6 may interfere, in order to reduce the first output shaft 2
To the relative displacement of motor shaft 6 deformation, the present embodiment is supported in the centre position of the first output shaft 2 using bearing 3, to reduce the
The flexible deformation of one output shaft 2 avoids interfering with 6 endoporus of motor shaft so that the operation of the first output shaft 2 is more steady.It is specific real
Shi Shi can also be supported using bearing 3 to reduce the flexible deformation of the second output shaft 11 in the centre position of the second output shaft 11,
It avoids interfering with 6 endoporus of motor shaft so that the operation of the second output shaft 11 is more steady.
In the present embodiment, gear drive group includes：Level-one driving gear 8, level-one driven gear 14, two level driving gear shaft
13, two level driving gear and two level driven gear 9.
Wherein, level-one driving gear 8 is connect by spline with motor shaft 6；Level-one driving gear 8 and level-one driven gear 14
Engagement；Two level driving gear shaft 13 is rigidly connected with level-one driven gear 14, two level driving gear respectively；Two level driving gear with
Two level driven gear 9 engages；Two level driven gear 9 is rigidly connected with differential mechanism 10；Differential mechanism 10 is by spline respectively with first
Output shaft 2, the connection of the second output shaft 11.
In addition, in order to improve the leakproofness of coaxial electric drive axle, the present embodiment is provided with motor shafting oil on motor shaft 6
Envelope 5, is provided with the first output shaft oil sealing 4 on the first output shaft 2.
The operation principle of the coaxial electric drive axle of the utility model is as follows:
After electrical power, the rotor 7 and motor shaft 6 that are rigidly connected integral while rotating, output torque and rotating speed；Level-one
Driving gear 8 is connect by spline with motor shaft 6, and power input and rotating speed are obtained；Level-one driving gear 8 and level-one driven gear
14 engagements when level-one driving gear 8 rotates, drive level-one driven gear 14 to rotate；Two level driving gear shaft 13 and level-one are driven
Gear 14 is rigidly connected, and when level-one driven gear 14 rotates, two level driving gear shaft 13 is driven to rotate；Two level driving gear and two
Grade driven gear 9 engages, and when two level driving gear rotates, two level driven gear 9 is driven to rotate；Two level driven gear 9 and differential
Device 10 is rigidly connected, and differential mechanism 10 is made to rotate together；Differential mechanism 10 is connected by spline and the first output shaft 2, the second output shaft 11
It connects, makes the first output shaft 2, the rotation of the second output shaft 11, to realize power output.
The utility model has the beneficial effects that：The utility model coaxial-type electric drive axle will be through the above technical solutions, will
Motor shaft and the first output shaft, the second output shaft, the first bridge tube, the second bridge tube are coaxially disposed, and make the center of gravity of motor and retarder
On the center line of the first bridge tube and the second bridge tube, the gravitational moment to the first bridge tube and the second bridge tube center line is zero, to
It avoids drive axle and generates torsion shake in use, avoid vehicle electric shock or phenomenon of nodding, and then it is comfortable to improve vehicle
Property and stability.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (5)
1. a kind of coaxial-type electric drive axle, which is characterized in that including：Motor, retarder and bridge tube；
Wherein, the motor include shell, the motor shaft and rotor that are set in the shell；The retarder includes that gear passes
Dynamic group, differential mechanism, the first output shaft and the second output shaft；The bridge tube includes the first bridge tube and the second bridge tube；
The motor shaft and rotor rigid connection, the shell and first bridge tube, the second bridge tube by flanged joint,
One end of the gear drive group is connect with the motor shaft by spline, the other end and the differential of the gear drive group
Device is rigidly connected, and the differential mechanism is connect with first output shaft, the second output shaft by spline；
The motor shaft is hollow-core construction, and first output shaft, the second output shaft are arranged in the electricity of the hollow-core construction respectively
The both ends of arbor, and the motor shaft is coaxially disposed with first output shaft, the second output shaft, the first bridge tube, the second bridge tube.
2. coaxial-type electric drive axle according to claim 1, which is characterized in that the centre position of first output shaft
It is provided with bearing.
3. coaxial-type electric drive axle according to claim 1, which is characterized in that be provided with motor shaft on the motor shaft
Oil sealing is provided with the first output shaft oil sealing on first output shaft.
4. the coaxial-type electric drive axle according to claims 1 to 3 any one, which is characterized in that the gear drive
Group includes：Level-one driving gear, level-one driven gear, two level driving gear shaft, two level driving gear and two level driven tooth
Wheel；
Wherein, the level-one driving gear passes through spline and the motor axis connection；The level-one driving gear and the level-one
Driven gear engages；The two level driving gear shaft is rigidly connected with the level-one driven gear, two level driving gear respectively；Institute
Two level driving gear is stated to engage with the two level driven gear；The two level driven gear is rigidly connected with the differential mechanism；Institute
It states differential mechanism and axis connection is exported with first output shaft, second by spline respectively.
5. the coaxial-type electric drive axle according to claims 1 to 3 any one, which is characterized in that the coaxial-type electricity
Dynamic drive axle is applied to electric vehicle, and the bridge tube is connect by damping spring with body of a motor car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820145625.0U CN207931484U (en) | 2018-01-29 | 2018-01-29 | Coaxial-type electric drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820145625.0U CN207931484U (en) | 2018-01-29 | 2018-01-29 | Coaxial-type electric drive axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207931484U true CN207931484U (en) | 2018-10-02 |
Family
ID=63650301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820145625.0U Active CN207931484U (en) | 2018-01-29 | 2018-01-29 | Coaxial-type electric drive axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207931484U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649139A (en) * | 2019-01-29 | 2019-04-19 | 台州恒跃新能源科技有限公司 | A kind of coaxial electric car rear axle assy |
-
2018
- 2018-01-29 CN CN201820145625.0U patent/CN207931484U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109649139A (en) * | 2019-01-29 | 2019-04-19 | 台州恒跃新能源科技有限公司 | A kind of coaxial electric car rear axle assy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191224 Address after: 563000 Guizhou new energy automobile industrial park, Nanguan sub district office, southern New District, Zunyi City, Guizhou Province Patentee after: ZUNYI DADIHE ELECTRIC CO., LTD. Address before: 518000 building 7, building J, Dongjiang science and Technology Park, Tong family community, Gongming office, Guangming District, Shenzhen, Guangdong Patentee before: SHENZHEN GREATLAND ELECTRICS INC. |