CN102720805A - Automatic transmission and vehicle including the automatic transmission - Google Patents
Automatic transmission and vehicle including the automatic transmission Download PDFInfo
- Publication number
- CN102720805A CN102720805A CN2011100776860A CN201110077686A CN102720805A CN 102720805 A CN102720805 A CN 102720805A CN 2011100776860 A CN2011100776860 A CN 2011100776860A CN 201110077686 A CN201110077686 A CN 201110077686A CN 102720805 A CN102720805 A CN 102720805A
- Authority
- CN
- China
- Prior art keywords
- gear
- clutch
- automatic transmission
- input shaft
- gear train
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/12—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with means for synchronisation not incorporated in the clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
Abstract
An automatic transmission comprises: a double clutch comprising a first clutch and a second clutch, a first input shaft connected to the first clutch, a second input shaft connected to the second clutch through the first input shaft, and an output shaft. The automatic transmission also comprises a synchronizer, a one-way clutch, and a gear reduction mechanism including a first gear set and a second gear set. The first gear set comprises a first gear and a second gear meshed with each other, and the second gear set comprises a third gear and a fourth gear meshed with each other. The third gear is fixed on the second input shaft through the one-way clutch, and the synchronizer is fixed on the second input shaft. The automatic transmission and a vehicle including the automatic transmission are characterized in that the one-way clutch is disposed between the third gear and the second input shaft to prevent power from being transmitted to the second input shaft from the output shaft through the second gear set. Furthermore, wear of the double clutch is effectively reduced, and the service life of the double clutch is increased.
Description
Technical field
The present invention relates to a kind of automatic transmission and comprise the vehicle of this automatic transmission.
Background technique
At present, along with the fast development of trailer reversing automation, automotive transmission is just presenting rapid growth momentum.Present automatic gearbox mainly contains torque converter (AT), stepless speed variator (CVT) and the present high electric control mechanical speed changer (AMT) of transmission efficiency.
The AMT that is superior to AT and CVT at aspects such as transmission efficiency and cost of production owing to have the advantage of the existing manual transmission production investment of the desired high fuel economy of automobile industry development, low emission and protection, has received the attention of motor-dom.
But in the using process of AMT, find its shortcoming gradually: vehicle is in shift process, and after clutch separation, the power of motor can not be delivered to wheel, causes power interruption, and the driver has the pause and transition in rhythm or melody sense, has influenced the power character of vehicle and the travelling comfort of taking.
For head it off, need control accurately shift process.Particularly, need the power assembly of power plant and speed changer formation be mated at aspects such as speed discrepancy, moments of torsion accurately and control in order to reduce the shock extent that shift process produces.
The appearance of DCT (dual-clutch transmission) has solved this problem.But in the shift process of DCT, the transmission of power is through the combine realization of synchronizer with sliding gear collar, handles complicated; If after gear switches, the sliding gear collar of a last gear and synchronizer do not break off, and power can pass back to another input shaft; Make the clutch plate high speed rotating; Consumed energy not only, and can cause the wearing and tearing of clutch, shorten the working life of clutch.
Summary of the invention
The present invention provides a kind of vehicle that can effectively protect the automatic transmission of double clutch and comprise this automatic transmission for solving the technical problem that existing dual-clutch transmission causes the double clutch wearing and tearing easily.
One aspect of the present invention provides a kind of automatic transmission; Comprise: first input shaft of double clutch, hollow, second input shaft and output shaft; Said double clutch comprises first clutch and second clutch; Said first input shaft is connected with first clutch, and the hollow space that said second input shaft passes said first input shaft is connected with said second clutch, wherein; Said automatic transmission also comprises synchronizer, overrunning clutch and reduction gears mechanism; Said reduction gears mechanism comprises first gear train and second gear train, and said first gear train comprises intermeshing first gear and second gear, and said first gear and second gear are fixedly mounted on respectively on said first input shaft and the output shaft; Said second gear train comprises intermeshing the 3rd gear and the 4th gear; Said the 3rd gear be installed on said second input shaft through overrunning clutch so that from second input shaft to output shaft unidirectional delivery power, said the 4th gear is fixedly mounted on the said output shaft, said synchronizer is installed on said second input shaft and can be synchronous with said the 3rd gear.
Further; Said overrunning clutch comprises inner ring and outer ring, and when the rotating speed of outer ring was lower than the rotating speed of inner ring, overrunning clutch was in bonding state; When the rotating speed of outer ring is higher than the rotating speed of inner ring; Overrunning clutch is in and surmounts state, and the inner ring of said overrunning clutch is fixed on said second input shaft, and said the 3rd gear set is on the outer ring of said overrunning clutch.
Also be installed with output gear on the said output shaft.
Said double clutch is a wet-type dual-clutch.
The velocity ratio of said first gear train is less than the velocity ratio of said second gear train.
When said first clutch separation, when second clutch combined, said second gear train formed first gear.
When said first clutch combination, when second clutch separated, said first gear train formed second gear.
When said first clutch separation, when second clutch combined, if the power reverse of second input shaft input, said synchronizer and the 3rd gear were synchronous, and said second gear train forms the gear that reverses gear.
The present invention also provides a kind of vehicle on the other hand; Comprise power source and differential mechanism, wherein, said vehicle also comprises above-mentioned automatic transmission; Said power source is connected with the double clutch of said automatic transmission, and the output shaft of said automatic transmission is connected with said differential mechanism.
Further, said power source is a motor.
Automatic transmission of the present invention and comprise the vehicle of this automatic transmission; Between the 3rd gear and second input shaft, be provided with overrunning clutch; Thereby can prevent that stopping power is from the transmission of output shaft warp second gear train to second input shaft; And then effectively reduce the wearing and tearing of double clutch, the working life of improving double clutch.
Description of drawings
Fig. 1 is the structural representation sketch of the automatic transmission that provides of one embodiment of the present invention;
Fig. 2 is automatic transmission that one embodiment of the present invention the provides state simplified schematic diagram when being in first gear, and wherein, heavy line is represented power transmission line;
Fig. 3 is speed changer that one embodiment of the present invention the provides state simplified schematic diagram when being in second gear, and wherein, heavy line is represented power transmission line;
Fig. 4 is that the speed changer that one embodiment of the present invention provides is in the state simplified schematic diagram when reversing gear gear, and wherein, heavy line is represented power transmission line;
Fig. 5 is the structural representation sketch of the vehicle that provides of one embodiment of the present invention.
Embodiment
Clearer for technical problem, technological scheme and beneficial effect that the present invention is solved, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
According to one embodiment of the present invention; As shown in Figure 1, one aspect of the present invention provides a kind of automatic transmission, comprising: first input shaft 4, second input shaft 10 and the output shaft 12 of double clutch 1, hollow; Double clutch 1 comprises first clutch 3 and second clutch 2; First input shaft 4 is connected with first clutch 3, and the hollow space that second input shaft 10 passes first input shaft 4 is connected with second clutch 2, wherein; This automatic transmission also comprises synchronizer 9, overrunning clutch 8 and reduction gears mechanism; Reduction gears mechanism comprises that first gear train 6 and second gear train, 11, the first gear trains 6 comprise that intermeshing first gear 5 and second gear, 15, the first gears 5 and second gear 15 are fixedly mounted on respectively on first input shaft 4 and the output shaft 12; Second gear train 11 comprises intermeshing the 3rd gear 7 and the 4th gear 14; The 3rd gear 7 be installed on second input shaft 10 through overrunning clutch 8 so that from second input shaft 10 to output shaft 12 unidirectional delivery power, the 4th gear 14 is fixedly mounted on the output shaft 12, synchronizer 9 is installed on second input shaft 10 and can be synchronous with the 3rd gear 7.
Synchronizer 9 is mainly used in the 3rd gear 7 synchronous, so that second input shaft 10 can be through second gear train 11 to output shaft 12 transferring power.
According to one embodiment of the present invention, double clutch 1 is a wet-type dual-clutch.
Further; Overrunning clutch 8 comprises inner ring and outer ring, and when the rotating speed of outer ring was lower than the rotating speed of inner ring, overrunning clutch 8 was in bonding state; When the rotating speed of outer ring is higher than the rotating speed of inner ring; Overrunning clutch 8 is in and surmounts state, and the inner ring of overrunning clutch 8 is fixed on second input shaft 10, and the 3rd gear 7 is sleeved on the outer ring of overrunning clutch 8.
The effect of overrunning clutch is to make certain element rotate locking on another direction by certain direction.According to different roller-type overrunning clutch and the free wheeling sprag clutchs of being divided into of the transmission of power device of installing between inner ring and the outer ring (like roller or voussoir).Those skilled in the art can select the overrunning clutch of suitable type as required.
According to one embodiment of the present invention, when the rotating speed of outer ring was lower than the rotating speed of inner ring, overrunning clutch 8 was in bonding state, and power can be delivered to output shaft 12 through second gear train 11 from second input shaft 10; When the rotating speed of outer ring was higher than the rotating speed of inner ring, overrunning clutch 8 was in and surmounts state, and at this moment, the power of output shaft 12 can not be delivered to second input shaft 10.
For the ease of the output of power, preferably, also be installed with output gear 13 on the output shaft 12 so that will be input to the power of automatic transmission and output to wheel (through realizations such as differential mechanisms).
For better protection double clutch 1, preferably, the velocity ratio of first gear train 6 is less than the velocity ratio of second gear train 11, and promptly first gear train 6 can form high gear, and second gear train 11 can form low gear.As can so that the velocity ratio of first gear train less than 1; And the velocity ratio of second gear train is greater than 1.Thereby those skilled in the art can rationally be provided with the gear that the velocity ratio of first gear train 6 and second gear train 11 is confirmed vehicle as required.
When first clutch 3 separation, when second clutch 2 combined, second gear train 11 formed first gear.
When first clutch 3 combinations, when second clutch 2 separated, first gear train 6 formed second gear.
When first clutch 3 separation, when second clutch 2 combined, if the power reverse of second input shaft, 10 inputs, synchronizer 9 and the 3rd gear 7 were synchronous, and second gear train 11 forms the gear that reverses gear.
Shift process below in conjunction with the detailed explanation automatic transmission of the present invention of accompanying drawing:
According to one embodiment of the present invention; Of Fig. 2; Control first clutch 3 separates, and second clutch 2 combines, and power will be delivered to overrunning clutch 8 from the second clutch 2 and second input shaft 10; Because the rotating speed of the inner ring of overrunning clutch 8 is greater than the rotating speed of outer ring, power will be delivered to output gear 13 places on the output shaft 12 through the overrunning clutch 8 and second gear train 11.In this process, second gear train 11 works and forms first gear.
For better protection double clutch 1, preferably, first gear train 6 is a train of reduction gears, and promptly the velocity ratio of first gear train 6 is greater than 1.
When first gear; Because second gear 15 is fixed on the output shaft 12, second gear 15 can drive first gear 5 and rotate, because the velocity ratio of first gear train 6 is greater than 1; At this moment; The rotating speed of first gear 5 will be less than the rotating speed of second gear 15, and the rotating speed of the part that promptly is connected with first input shaft 4 of driven plate of first clutch 3 will effectively reduce this moment, thereby help protecting first clutch 3.
According to one embodiment of the present invention, as shown in Figure 3, control first clutch 3 combines, and second clutch 2 separates, and power will be delivered to the output gear 13 on the output shaft 12 from first clutch 3, first input shaft 4 and first gear train 6.In this process, first gear train 6 works and forms second gear.
When second gear, because the 4th gear 14 is fixed on the output shaft 12, the 4th gear 14 can drive the 3rd gear 7 and rotate; At this moment, the rotating speed of the outer ring of overrunning clutch 8 is higher than the rotating speed of inner ring, and overrunning clutch 8 is in and surmounts state; At this moment; The power of output shaft 12 can not be delivered to second input shaft 10, is not rotated so second clutch 2 can not drive, so can effectively protect second clutch 3.
Simultaneously, the switching of first gear and second gear only need be controlled first clutch 3 and second clutch 2 and alternately combine get final product with separating, thereby effectively reduces shift impact, shortens (or elimination) power interruption time, thus the riding comfort of raising vehicle.
According to one embodiment of the present invention; As shown in Figure 4; When the power reverse that is input to this automatic transmission (can control the motor counter-rotating as adopting the be used as power vehicle in source of motor), control first clutch 3 separates, and second clutch 2 combines; Simultaneously control synchro 9 and the 3rd gear 7 are synchronous, and power will be delivered to the output gear 13 on the output shaft 12 from second clutch 2, second input shaft 10, synchronizer 9 and second gear train 11.In this process, second gear train 11 works and forms the gear that reverses gear.
When reversing gear gear; Because second gear 15 is fixed on the output shaft 12, second gear 15 can drive first gear 5 and rotate, because the velocity ratio of first gear train 6 is greater than 1; At this moment; The rotating speed of first gear 5 will be less than the rotating speed of second gear 15, and the rotating speed of the part that promptly is connected with first input shaft 4 of driven plate of first clutch 3 will effectively reduce this moment, thereby help protecting first clutch 3.
According to one embodiment of the present invention; As shown in Figure 5, the present invention also provides a kind of vehicle on the other hand, comprises power source 16 and differential mechanism 17; Wherein, This vehicle also comprises above-mentioned automatic transmission, and power source 16 is connected with the double clutch 1 of automatic transmission, and the output shaft 12 of automatic transmission is connected with differential mechanism 17.
Power source 16 can select motor or motor that power is provided as required, and power source 16 can be fixed together like welding, riveted joint etc. through various suitable manner with double clutch 1.
Further, this power source 16 is a motor.When motor reversed, promptly may command double clutch 1 was realized reversing gear with synchronizer 9.
Automatic transmission of the present invention and comprise the vehicle of this automatic transmission; Between the 3rd gear and second input shaft, be provided with overrunning clutch; Thereby can prevent that stopping power is from the transmission of output shaft warp second gear train to second input shaft; And then effectively reduce the especially wearing and tearing of second clutch of double clutch, improve the working life of double clutch.
Simultaneously, the velocity ratio of first gear train when second gear driven, first gear rotates, can effectively reduce the rotating speed of first gear greater than 1, thereby reduces the rotating speed of first clutch driven plate, helps the protection of first clutch.
So automatic transmission of the present invention and comprise the vehicle of this automatic transmission can effectively be protected first clutch and second clutch, the working life that helps improving double clutch.
In addition, in the handoff procedure of first gear and second gear, need not the participation of synchronizer, thereby simplified the shift control mode, also reduced the quality of automatic transmission simultaneously, simplify the structure, reduced taking up room.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. automatic transmission; Comprise: first input shaft of double clutch, hollow, second input shaft and output shaft; Said double clutch comprises first clutch and second clutch; Said first input shaft is connected with first clutch, and the hollow space that said second input shaft passes said first input shaft is connected with said second clutch, it is characterized in that; Said automatic transmission also comprises synchronizer, overrunning clutch and reduction gears mechanism; Said reduction gears mechanism comprises first gear train and second gear train, and said first gear train comprises intermeshing first gear and second gear, and said first gear and second gear are fixedly mounted on respectively on said first input shaft and the output shaft; Said second gear train comprises intermeshing the 3rd gear and the 4th gear; Said the 3rd gear be installed on said second input shaft through overrunning clutch so that from second input shaft to output shaft unidirectional delivery power, said the 4th gear is fixedly mounted on the said output shaft, said synchronizer is installed on said second input shaft and can be synchronous with said the 3rd gear.
2. automatic transmission as claimed in claim 1 is characterized in that said overrunning clutch comprises inner ring and outer ring; When the rotating speed of outer ring is lower than the rotating speed of inner ring; Overrunning clutch is in bonding state, and when the rotating speed of outer ring was higher than the rotating speed of inner ring, overrunning clutch was in and surmounts state; The inner ring of said overrunning clutch is fixed on said second input shaft, and said the 3rd gear set is on the outer ring of said overrunning clutch.
3. automatic transmission as claimed in claim 1 is characterized in that, also is installed with output gear on the said output shaft.
4. automatic transmission as claimed in claim 1 is characterized in that, said double clutch is a wet-type dual-clutch.
5. automatic transmission as claimed in claim 1 is characterized in that the velocity ratio of said first gear train is less than the velocity ratio of said second gear train.
6. automatic transmission as claimed in claim 5 is characterized in that, when said first clutch separation, when second clutch combined, said second gear train formed first gear.
7. automatic transmission as claimed in claim 6 is characterized in that, when said first clutch combination, when second clutch separated, said first gear train formed second gear.
8. automatic transmission as claimed in claim 6 is characterized in that, when said first clutch separates; When second clutch combines; If the power reverse of second input shaft input, said synchronizer and the 3rd gear are synchronous, and said second gear train forms the gear that reverses gear.
9. vehicle; Comprise power source and differential mechanism, it is characterized in that said vehicle also comprises any described automatic transmission among the claim 1-8; Said power source is connected with the double clutch of said automatic transmission, and the output shaft of said automatic transmission is connected with said differential mechanism.
10. vehicle as claimed in claim 9 is characterized in that, said power source is a motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110077686.0A CN102720805B (en) | 2011-03-30 | 2011-03-30 | A kind of automatic transmission and comprise the vehicle of this automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110077686.0A CN102720805B (en) | 2011-03-30 | 2011-03-30 | A kind of automatic transmission and comprise the vehicle of this automatic transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102720805A true CN102720805A (en) | 2012-10-10 |
| CN102720805B CN102720805B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110077686.0A Active CN102720805B (en) | 2011-03-30 | 2011-03-30 | A kind of automatic transmission and comprise the vehicle of this automatic transmission |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174815A (en) * | 2013-03-28 | 2013-06-26 | 陈奇 | Double clutch automatic transmission with reverse gear and parking locking mechanism for electric car |
| CN106321746A (en) * | 2015-07-01 | 2017-01-11 | 现代自动车株式会社 | Transmission for vehicle |
| RU172383U1 (en) * | 2016-07-01 | 2017-07-06 | Государственное бюджетное образовательное учреждение высшего профессионального образования Нижегородский государственный инженерно-экономический университет (НГИЭУ) | MECHANISM OF CHANGE OF TRANSMISSION |
| CN109340361A (en) * | 2018-11-19 | 2019-02-15 | 吉林省晟林汽车传动科技有限公司 | L formula gear shifting structure |
| CN109356979A (en) * | 2018-11-07 | 2019-02-19 | 柳州惠林科技有限责任公司 | A kind of single clutch two-shift automatic variable speed device having reverse gear |
| CN109356980A (en) * | 2018-11-07 | 2019-02-19 | 柳州惠林科技有限责任公司 | A kind of no reverse gear third gear single-direction transmission two-shift automatic variable speed device |
| CN109849643A (en) * | 2019-03-21 | 2019-06-07 | 浙江鑫可精密机械有限公司 | A kind of new energy vehicle retarder system |
| WO2019129202A1 (en) * | 2017-12-29 | 2019-07-04 | 比亚迪股份有限公司 | Gearbox, power drive system, and vehicle |
| CN110005763A (en) * | 2017-12-29 | 2019-07-12 | 比亚迪股份有限公司 | Speed changer, power-driven system and vehicle |
| CN110182047A (en) * | 2019-06-13 | 2019-08-30 | 淮阴工学院 | A kind of transmission integrated system of electric powered motor |
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| CN2924171Y (en) * | 2006-05-31 | 2007-07-18 | 华南理工大学 | Dual-clutch type automatic transmission for preventing two-gear from being locked |
| CN101204924A (en) * | 2006-12-19 | 2008-06-25 | 比亚迪股份有限公司 | Electric motor vehicle driving system |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174815A (en) * | 2013-03-28 | 2013-06-26 | 陈奇 | Double clutch automatic transmission with reverse gear and parking locking mechanism for electric car |
| CN103174815B (en) * | 2013-03-28 | 2015-09-16 | 合肥工业大学 | The double-clutch automatic gearbox of band reverse gear used for electric vehicle and parking locking mechanism |
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| RU172383U1 (en) * | 2016-07-01 | 2017-07-06 | Государственное бюджетное образовательное учреждение высшего профессионального образования Нижегородский государственный инженерно-экономический университет (НГИЭУ) | MECHANISM OF CHANGE OF TRANSMISSION |
| CN109990054A (en) * | 2017-12-29 | 2019-07-09 | 比亚迪股份有限公司 | Speed changer, power-driven system and vehicle |
| WO2019129202A1 (en) * | 2017-12-29 | 2019-07-04 | 比亚迪股份有限公司 | Gearbox, power drive system, and vehicle |
| CN110005763A (en) * | 2017-12-29 | 2019-07-12 | 比亚迪股份有限公司 | Speed changer, power-driven system and vehicle |
| CN109356979A (en) * | 2018-11-07 | 2019-02-19 | 柳州惠林科技有限责任公司 | A kind of single clutch two-shift automatic variable speed device having reverse gear |
| CN109356980A (en) * | 2018-11-07 | 2019-02-19 | 柳州惠林科技有限责任公司 | A kind of no reverse gear third gear single-direction transmission two-shift automatic variable speed device |
| CN109340361A (en) * | 2018-11-19 | 2019-02-15 | 吉林省晟林汽车传动科技有限公司 | L formula gear shifting structure |
| CN109849643A (en) * | 2019-03-21 | 2019-06-07 | 浙江鑫可精密机械有限公司 | A kind of new energy vehicle retarder system |
| CN109849643B (en) * | 2019-03-21 | 2021-08-13 | 浙江鑫可传动科技有限公司 | New energy vehicle retarder system |
| CN110182047A (en) * | 2019-06-13 | 2019-08-30 | 淮阴工学院 | A kind of transmission integrated system of electric powered motor |
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|---|---|
| CN102720805B (en) | 2016-03-02 |
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