CN210178884U - Two-gear automatic gearbox of electric automobile - Google Patents
Two-gear automatic gearbox of electric automobile Download PDFInfo
- Publication number
- CN210178884U CN210178884U CN201920998115.2U CN201920998115U CN210178884U CN 210178884 U CN210178884 U CN 210178884U CN 201920998115 U CN201920998115 U CN 201920998115U CN 210178884 U CN210178884 U CN 210178884U
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- gear
- shaft
- shifting
- driving
- automatic
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- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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Abstract
The utility model provides an electric automobile second gear automatic gearbox, which comprises a housin, driving motor, the primary shaft, first driving gear, the second driving gear, the secondary shaft, with first driving gear meshing driven first gear of shifting, first bearing, with second driving gear meshing driven second gear of shifting, second bearing, install the tooth hub on the secondary shaft, can with first gear of shifting, gear shifting's ring gear matched with on the second gear of shifting, install in synchronizer ring gear outer groove and around declutch shift shaft pivoted shift fork, the gear shifting shaft, automatic gear shifting mechanism base, automatic gear shifting mechanism, install the third driving gear on the secondary shaft end, the third axle, install the fourth driving gear on the third axle, first driven gear, the output shaft, install the differential mechanism on the output shaft, the second driven gear. The utility model discloses automatically, realize the high-low gear conversion, power performance is good, and the noise is low, and transmission efficiency is high, and the gear shift is soft, energy-conservation. Can be widely applied to electric automobiles.
Description
Technical Field
The invention relates to a two-gear automatic gearbox of an electric automobile, which can be widely applied to the electric automobile.
Background
The existing electric automobile has no gearbox, only has a speed reducer with fixed speed ratio, and the speed reducer with fixed speed ratio has only one gear. The motor has large low-speed torque, and the efficiency of the motor is extremely low at the moment, so that the electric automobile consumes very large power when starting, accelerating and climbing steep slopes at low speed, the motor can also generate heat, and the endurance mileage of the electric automobile is greatly shortened when the electric automobile is used in hilly lands, mountain cities or congested cities. Therefore, the motor is often in a low-efficiency area, precious battery energy is wasted, the requirement on the driving motor is improved, and the driving range of the vehicle is reduced.
Disclosure of Invention
The invention aims to provide the two-gear automatic gearbox of the electric automobile, which can automatically realize high-low gear conversion, has good power performance, low noise, high transmission efficiency, soft gear shifting and energy conservation.
In order to achieve the purpose, the two-gear automatic gearbox of the electric automobile comprises a shell, a driving motor, a first shaft, a first driving gear, a second shaft, a first shifting gear, a first needle bearing, a second needle bearing, a gear hub, a second shifting gear, a second needle bearing, a second shifting gear and a second needle bearing, wherein the driving motor is arranged on the side face of the shell, the first shaft is connected with a driving shaft of the driving motor and is arranged in the shell, the first driving gear and the second driving gear are respectively arranged on the first shaft, the second shifting gear is arranged above the first shaft and is arranged in the shell, the first shifting gear is arranged on the second shaft and is in meshing transmission with the first driving gear, the first needle bearing is arranged between the second shaft and the first shifting gear, the second needle bearing is arranged between the second shaft and the second shifting gear, the gear, The gear shifting mechanism comprises a synchronizer gear ring, a shifting fork, a small shaft, an automatic shifting mechanism base, an automatic shifting mechanism, a third driving gear, a third shaft, a fourth driving gear, a first driven gear, an output shaft, a differential mechanism and a second driven gear, wherein the synchronizer gear ring is matched with a gear ring on a second shifting gear, the shifting fork is installed in an outer groove of the synchronizer gear ring and rotates around a shifting fork shaft, a small shaft on the shifting fork extends into a shifting shaft in a U-shaped groove, the automatic shifting mechanism base is installed on a shell, the automatic shifting mechanism is installed on the automatic shifting mechanism base and is connected with the shifting fork shaft through a key connection, the third driving gear is installed at the tail end of the second shaft, the third shaft is located above the second shaft and is installed in the shell, the fourth driving gear is installed on the third shaft, the first driven gear.
The invention relates to a two-gear automatic gearbox of an electric automobile. The inner hole of the second gear shifting gear is matched with the excircle of the second needle bearing, and the inner hole of the second needle bearing is matched with the excircle of the second shaft.
According to the two-gear automatic gearbox of the electric automobile, the first gear shifting gear and the second gear shifting gear rotate, and normally, power cannot be transmitted to the second shaft, and only idling is achieved. Only when the gear rings on the first gear shifting gear and the second gear shifting gear are matched with the synchronizer gear ring, the synchronizer gear ring rotates, the gear hub is driven to rotate through gear transmission, and the second shaft is driven to rotate.
The invention relates to a two-gear automatic gearbox of an electric automobile.A driving motor transmits power to a first shaft, the first shaft rotates, a first driving gear and a second driving gear on the first shaft rotate, the first driving gear is in constant meshing with a first gear shifting gear, the second driving gear is in constant meshing with a second gear shifting gear, the first driving gear and the second driving gear rotate, and the first gear shifting gear and the second gear shifting gear also rotate along with the first gear shifting gear and the second gear shifting gear. If the first shifting gear and the second shifting gear are not matched with the synchronizer gear ring, the second shaft cannot be driven to rotate, and the second shaft is in a neutral state.
The invention relates to a two-gear automatic gearbox of an electric automobile, which has the working principle that:
according to the external road condition, the automobile running condition, the loading condition, the self-set requirement of a driver and the like, the automatic gear shifting mechanism sends a signal to drive the gear shifting shaft to move along the shifting fork shaft, and the shifting fork is arranged in the outer groove of the synchronizer gear ring because the small shaft on the shifting fork extends into the U-shaped groove of the gear shifting shaft, so that when the gear shifting shaft moves, the synchronizer gear ring is driven to move, the driving motor drives the first shaft to rotate to drive the second driving gear on the first shaft to rotate, and the second driving gear drives the second gear shifting gear to rotate through gear transmission. When the synchronizer gear ring moves leftwards, the inner teeth of the synchronizer gear ring are matched with the gear ring on the second gear shifting gear to drive the synchronizer gear ring to rotate, the synchronizer gear ring drives the gear hub to rotate through gear transmission so as to drive the second shaft to rotate and drive the third driving gear on the second shaft to rotate, the third driving gear is normally meshed with the first driven gear to drive the third shaft to rotate, the fourth driving gear on the third shaft is meshed with the second driven gear on the differential mechanism to drive the differential mechanism to rotate, and therefore low-gear rotating speed is achieved.
In a similar way, the driving motor drives the first shaft to rotate, so as to drive the first driving gear on the first shaft to rotate, and the first driving gear drives the first gear shifting gear to rotate through gear transmission. When the synchronizer gear ring moves rightwards, the inner teeth of the synchronizer gear ring are matched with the gear ring on the first gear shifting gear to drive the synchronizer gear ring to rotate, the synchronizer gear ring drives the gear hub to rotate through gear transmission, so that the second shaft is driven to rotate, the third driving gear on the second shaft is driven to rotate, the third driving gear is normally meshed with the first driven gear to drive the third shaft to rotate, the fourth driving gear on the third shaft is meshed with the second driven gear on the differential mechanism to drive the differential mechanism to rotate, and high-grade rotating speed is achieved.
Therefore, the two-gear automatic gearbox of the electric automobile sends a signal through the automatic gear shifting mechanism to realize automatic two-stage speed change of high and low gears. Therefore, the high-low gear shifting can be automatically realized.
The two-gear automatic gearbox of the electric automobile disclosed by the invention is verified by experiments, the high-low gear conversion is automatically realized, the gear shifting is soft, the noise is low, the fatigue strength of a driver is reduced, the heating of a motor is reduced, the efficiency is greatly improved, the transmission efficiency is high, the electric energy is saved, the energy consumption is reduced, the dynamic property of the automobile is improved, the endurance mileage is increased, and the climbing capability can be increased at a low gear.
In conclusion, the two-gear automatic gearbox of the electric automobile automatically realizes high-low gear conversion, has good power performance, low noise, high transmission efficiency, soft gear shifting and energy conservation.
Drawings
The invention will be further described with reference to the accompanying drawings and examples thereof.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view a-a in fig. 1.
Detailed Description
In fig. 1 and 2, the two-gear automatic transmission for an electric vehicle of the present invention comprises a housing 1, a driving motor 2 mounted on a side surface of the housing, a first shaft 3 connected to a driving shaft of the driving motor and mounted in the housing, a first driving gear 4 and a second driving gear 5 mounted on the first shaft, a second shaft 6 disposed above the first shaft and mounted in the housing, a first shift gear 7 mounted on the second shaft and engaged with the first driving gear, a first needle bearing 8 mounted between the second shaft and the first shift gear, a second shift gear 9 mounted on the second shaft and engaged with the second driving gear, a second needle bearing 10 mounted between the second shaft and the second shift gear, a hub 11 located between two gear rings of the first shift gear and the second shift gear and mounted on the second shaft through a key connection, a synchronizer gear ring 12 which is in gear transmission with a gear hub and can be matched with gear rings on a first gear shifting gear and a second gear shifting gear, a shifting fork 14 which is arranged in an outer groove of the synchronizer gear ring and rotates around a shifting fork shaft 13, a small shaft on the shifting fork extends into a shifting shaft 15 in a U-shaped groove, an automatic gear shifting mechanism base 16 arranged on a shell, an automatic gear shifting mechanism 17 which is arranged on the automatic gear shifting mechanism base and connected with the shifting shaft through key connection, a third driving gear 18 arranged on the tail end of a second shaft, a third shaft 19 which is positioned above the second shaft and arranged in the shell, a fourth driving gear 20 arranged on the third shaft, a first driven gear 21 meshed with the third driving gear for transmission, an output shaft 22 arranged above the third shaft and arranged in the shell, a differential 23 arranged on the output shaft, and a second driven gear 24 arranged on the outer circle of the differential and meshed with the fourth driving gear for transmission.
Further, wheels 25 are shown mounted on both ends of the output shaft.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (1)
1. The automatic gearbox is characterized by comprising a shell, a driving motor arranged on the side face of the shell, a first shaft connected with a driving shaft of the driving motor and arranged in the shell, a first driving gear and a second driving gear which are respectively arranged on the first shaft, a second shaft positioned above the first shaft and arranged in the shell, a first shifting gear arranged on the second shaft and in meshing transmission with the first driving gear, a first needle bearing arranged between the second shaft and the first shifting gear, a second shifting gear arranged on the second shaft and in meshing transmission with the second driving gear, a second needle bearing arranged between the second shaft and the second shifting gear, a gear hub positioned between two gear rings of the first shifting gear and the second shifting gear and in key connection with the second shaft, a gear hub in meshing transmission with the gear hub and capable of being in meshing transmission with the first shifting gear, a second shifting gear arranged on the second shaft, a first gear arranged on the side face, The gear shifting mechanism comprises a synchronizer gear ring, a shifting fork, a small shaft, an automatic shifting mechanism base, an automatic shifting mechanism, a third driving gear, a third shaft, a fourth driving gear, a first driven gear, an output shaft, a differential mechanism and a second driven gear, wherein the synchronizer gear ring is matched with a gear ring on a second shifting gear, the shifting fork is installed in an outer groove of the synchronizer gear ring and rotates around a shifting fork shaft, the small shaft on the shifting fork extends into the shifting shaft in a U-shaped groove, the automatic shifting mechanism base is installed on a shell, the automatic shifting mechanism is installed on the automatic shifting mechanism base and is connected with the shifting fork shaft through a key connection, the third driving gear is installed at the tail end of the second shaft, the third shaft is located above the second shaft and is installed in the shell, the fourth driving gear is installed on the third shaft, the first.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920998115.2U CN210178884U (en) | 2019-06-29 | 2019-06-29 | Two-gear automatic gearbox of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920998115.2U CN210178884U (en) | 2019-06-29 | 2019-06-29 | Two-gear automatic gearbox of electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210178884U true CN210178884U (en) | 2020-03-24 |
Family
ID=69839447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920998115.2U Expired - Fee Related CN210178884U (en) | 2019-06-29 | 2019-06-29 | Two-gear automatic gearbox of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210178884U (en) |
-
2019
- 2019-06-29 CN CN201920998115.2U patent/CN210178884U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |