CN112360974A - Gear shifting mechanism and gear shifting method of automatic gearbox - Google Patents
Gear shifting mechanism and gear shifting method of automatic gearbox Download PDFInfo
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- CN112360974A CN112360974A CN202011245273.4A CN202011245273A CN112360974A CN 112360974 A CN112360974 A CN 112360974A CN 202011245273 A CN202011245273 A CN 202011245273A CN 112360974 A CN112360974 A CN 112360974A
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
- F16H2063/3066—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force using worm gears
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses a gear shifting mechanism and a gear shifting method of an automatic gearbox, which comprise a worm driving assembly, a gear shifting assembly, a worm gear transmission assembly, a first clutch and a second clutch, wherein the worm driving assembly is connected with the gear shifting assembly; the output end of the worm driving component is in transmission connection with the input end of the worm gear transmission component; the output end of the worm gear transmission assembly is in transmission connection with the midpoint of the gear shifting assembly; the first clutch and the second clutch are disposed between the first end and the second end of the shift assembly. The invention realizes high-precision and timely locking through the worm gear pair.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a gear shifting mechanism and a gear shifting method of an automatic gearbox.
Background
AT present, the new energy automobile transmission mainly adopts AMT, double-clutch (DCT), AT and other structures, wherein, the gear shifting mechanisms of the AMT and the double-clutch (DCT) transmission both adopt a displacement transmission reducer and an angular displacement sensor for monitoring the gear shifting position.
The gear shifting mechanism of the existing new energy automobile gearbox at least has the following problems:
1. the precision of the displacement sensor or the angular displacement sensor is low, and the accurate position control in the gearbox is difficult to realize by adopting a means that the sensor monitors the gear shifting position so as to facilitate the gear shifting mechanism to carry out gear shifting;
2. when the clutch (or synchronizer) is worn, the control program usually performs self-learning correction at intervals, and the change of the gear shifting stroke caused by the wear cannot be timely compensated.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the gear shifting mechanism and the gear shifting method of the automatic gearbox are provided, and the position locking precision and timeliness of the gear shifting mechanism are improved.
In order to solve the technical problems, the invention adopts the technical scheme that:
a gear shifting mechanism of an automatic gearbox comprises a worm driving assembly, a gear shifting assembly, a worm gear transmission assembly, a first clutch and a second clutch;
the output end of the worm driving assembly is in transmission connection with the input end of the worm gear transmission assembly to form a worm gear pair;
the output end of the worm gear transmission assembly is in transmission connection with the midpoint of the gear shifting assembly;
the first clutch and the second clutch are disposed between the first end and the second end of the shift assembly;
when the first end of the gear shifting assembly is separated from the first clutch and the second end of the gear shifting assembly is separated from the second clutch, the first clutch is separated from the first gear and the second clutch is separated from the second gear, and the automatic gearbox is in a neutral gear at the moment;
when the first end of the gear shifting assembly is combined with the first clutch, the first clutch is in transmission connection with the first gear, and the automatic gearbox is engaged in a first gear at the moment;
when the second end of the gear shifting assembly is combined with the second clutch, the second clutch is in transmission connection with the second gear, and the automatic gearbox is in second gear engagement at the moment.
In order to solve the technical problem, the invention adopts another technical scheme as follows:
a method of shifting a shift mechanism of an automatic transmission, comprising the steps of:
s1: when the first clutch is separated from the first gear and the second clutch is separated from the second gear, the automatic gearbox is in a neutral gear at the moment;
s2: the controller sends a first instruction to the gear shifting motor, the worm rotates forwards and drives the worm wheel to rotate anticlockwise, the rocker arm drives the first shifting fork to move rightwards through the gear shifting assembly under the driving of the worm wheel, the first end of the gear shifting assembly is combined with the first clutch at the moment, the first clutch is in transmission connection with the first gear, and the automatic gearbox is engaged in a first gear;
s3: the controller sends a second instruction to the gear shifting motor, the gear shifting motor drives, the worm rotates reversely and drives the worm wheel to rotate clockwise, the rocker arm drives the first shifting fork and the second shifting fork to move leftwards through the gear shifting assembly under the drive of the worm wheel, the first clutch is separated from the first gear at the moment, meanwhile, the second clutch is in transmission connection with the second gear, and the automatic gearbox is connected into a second gear.
The invention has the beneficial effects that: when the first end of the gear shifting component pushes the first clutch to be in transmission connection with the first gear, the gearbox can be engaged into a first gear, and when the second end of the gear shifting component pushes the second clutch to be in transmission connection with the second gear, the gearbox is engaged into a second gear. The invention adopts a worm gear pair transmission mode to drive the gear shifting assembly to swing left and right, so that the gear shifting of the gearbox is realized; the self-locking characteristic of the worm gear pair is utilized, so that locking is realized when the worm driving assembly is powered off, the locking action is rapid and timely, and the locking precision is high; in the gear shifting process, the positions of the first end and the second end of the gear shifting assembly do not need to be monitored, compensation calculation of clutch abrasion is not needed, and control is simpler; the whole structure is compact, the number of parts is small, the maintenance is simple, and the cost is low.
Drawings
Fig. 1 is a schematic structural view of a shift mechanism of an automatic transmission according to the present invention.
Description of reference numerals:
1. a worm drive assembly; 11. a worm; 12. a shift motor; 13. a controller;
2. a shift assembly; 21. a drive block; 211. a groove; 22. a shift lever; 23. a first shift fork; 24. A second fork; 25. a pin;
3. a worm gear assembly; 31. a worm gear; 32. a rocker arm; 33. a ball head;
4. a first clutch; 5. a second clutch; 6. a first gear; 7. a second gear;
8. a first input shaft; 81. a first bearing; 9. a second input shaft; 91. a second bearing.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, a gear shift mechanism of an automatic transmission includes a worm driving assembly, a gear shift assembly, a worm gear assembly, a first clutch and a second clutch;
the output end of the worm driving assembly is in transmission connection with the input end of the worm gear transmission assembly to form a worm gear pair;
the output end of the worm gear transmission assembly is in transmission connection with the midpoint of the gear shifting assembly;
the first clutch and the second clutch are disposed between the first end and the second end of the shift assembly;
when the first end of the gear shifting assembly is separated from the first clutch and the second end of the gear shifting assembly is separated from the second clutch, the first clutch is separated from the first gear and the second clutch is separated from the second gear, and the automatic gearbox is in a neutral gear at the moment;
when the first end of the gear shifting assembly is combined with the first clutch, the first clutch is in transmission connection with the first gear, and the automatic gearbox is engaged in a first gear at the moment;
when the second end of the gear shifting assembly is combined with the second clutch, the second clutch is in transmission connection with the second gear, and the automatic gearbox is in second gear engagement at the moment.
The working principle of the invention is as follows:
the gear shifting assembly is driven to move left and right through the worm gear pair, and timely and quick locking of gears of the gearbox is achieved.
From the above description, the beneficial effects of the present invention are: when the first end of the gear shifting component pushes the first clutch to be in transmission connection with the first gear, the gearbox can be engaged into a first gear, and when the second end of the gear shifting component pushes the second clutch to be in transmission connection with the second gear, the gearbox is engaged into a second gear. The invention adopts a worm gear pair transmission mode to drive the gear shifting assembly to swing left and right, so that the gear shifting of the gearbox is realized; the self-locking characteristic of the worm gear pair is utilized, so that locking is realized when the worm driving assembly is powered off, the locking action is rapid and timely, and the locking precision is high; in the gear shifting process, the positions of the first end and the second end of the gear shifting assembly do not need to be monitored, compensation calculation of clutch abrasion is not needed, and control is simpler; the whole structure is compact, the number of parts is small, the maintenance is simple, and the cost is low.
Further, the worm driving assembly comprises a worm, a gear shifting motor and a controller;
the controller is electrically connected with the gear shifting motor;
one end of the worm is in transmission connection with the output end of the gear shifting motor, and the other end of the worm is in transmission connection with the worm gear transmission assembly.
According to the description, the controller is used for controlling the current of the gear shifting motor and driving the gear shifting motor to rotate forwards and backwards, when the clutch completes the action and drives the gear to rotate, the gear shifting motor cannot continuously drive the worm driving assembly to rotate, namely, the gear shifting motor is locked, the controller monitors the current jump of the gear shifting motor, and due to the self-locking characteristic of the worm gear transmission pair, the combination state of the clutch can be kept at the moment, and the locking precision is high.
Furthermore, the first gear is arranged at one end of the first input shaft, and the other end of the first input shaft is provided with a first bearing;
the second gear is arranged at one end of the second input shaft, and the other end of the second input shaft is provided with a second bearing.
As can be seen from the above description, the first bearing is used for pushing the first clutch to be combined with the first gear, and the second bearing is used for pushing the second clutch to be combined with the second gear, so that timely gear shifting is ensured.
Further, the outer diameter of the first gear is smaller than the outer diameter of the second gear.
As can be seen from the above description, the outer diameter of the first gear is smaller than that of the second gear, so as to realize the power increase through the change of the transmission ratio after the gear shifting.
Further, the gear shifting assembly comprises a driving block, a gear shifting pull rod, a first shifting fork and a second shifting fork;
the driving block is arranged at the middle point of the gear shifting pull rod, the first shifting fork and the second shifting fork are respectively arranged at two ends of the gear shifting pull rod, and the first shifting fork and the second shifting fork are symmetrically arranged;
one end, far away from the gear shifting pull rod, of the first shifting fork can push the first clutch to be in transmission connection with the first gear through the first bearing;
one end, far away from the gear shifting pull rod, of the second shifting fork can push the second clutch to be in transmission connection with the second gear through the second bearing.
According to the description, the first shifting fork and the second shifting fork are used for respectively pushing the first bearing and the second bearing to be in contact with the corresponding clutches, so that the gears are quickly switched, and the gear switching is more reliable and stable; the driving block and the transposition gear lever are arranged and used for transmitting the driving force of the worm gear transmission assembly to the first shifting fork and the second shifting fork respectively, so that the gear switching process is more reliable.
Furthermore, one side of the driving block, which faces the worm gear transmission assembly, is provided with a groove used for being connected with the worm gear transmission assembly.
The groove is arranged to improve the reliability of the transmission action, and the condition that the worm gear transmission assembly cannot drive the driving block in the transmission process is avoided.
Further, the worm gear transmission assembly comprises a worm gear, a rocker arm and a ball head;
the worm wheel is in transmission connection with the output end of the worm driving assembly;
one end of the rocker arm is in transmission connection with the axis of the worm wheel, the other end of the rocker arm is in transmission connection with the center of the gear shifting assembly through the ball head, and the rocker arm can drive the gear shifting assembly to move left and right.
According to the description, the worm wheel is used for being in meshed transmission with the worm to form a worm wheel and worm pair, so that the locking precision is improved, a sensor for monitoring the positions of the first shifting fork and the second shifting fork is omitted, compensation calculation is not needed to be carried out by losing clutch abrasion, and the control process is simpler; the driving force transmission to the subassembly of shifting of worm wheel can be had with rocking arm and bulb, and the transmission process precision is higher, and is more reliable.
A method of shifting a shift mechanism of an automatic transmission, comprising the steps of:
s1: when the first clutch is separated from the first gear and the second clutch is separated from the second gear, the automatic gearbox is in a neutral gear at the moment;
s2: the controller sends a first instruction to the gear shifting motor, the worm rotates forwards and drives the worm wheel to rotate anticlockwise, the rocker arm drives the first shifting fork to move rightwards through the gear shifting assembly under the driving of the worm wheel, the first end of the gear shifting assembly is combined with the first clutch at the moment, the first clutch is in transmission connection with the first gear, and the automatic gearbox is engaged in a first gear;
s3: the controller sends a second instruction to the gear shifting motor, the gear shifting motor drives, the worm rotates reversely and drives the worm wheel to rotate clockwise, the rocker arm drives the first shifting fork and the second shifting fork to move leftwards through the gear shifting assembly under the drive of the worm wheel, the first clutch is separated from the first gear at the moment, meanwhile, the second clutch is in transmission connection with the second gear, and the automatic gearbox is connected into a second gear.
The invention is suitable for being mounted on pure electric vehicles, hybrid electric vehicles or other mechanical devices which strictly control weight, cost and the like.
Example one
Referring to fig. 1, a gear shift mechanism of an automatic transmission includes a worm drive assembly 1, a gear shift assembly 2, a worm gear assembly 3, a first clutch 4 and a second clutch 5; the output end of the worm driving assembly 1 is in transmission connection with the input end of the worm gear transmission assembly 3 to form a worm gear pair; the output end of the worm gear transmission component 3 is in transmission connection with the midpoint of the gear shifting component 2; the first clutch 4 and the second clutch 5 are arranged between the first end and the second end of the gear shifting assembly 2; when the first end of the gear shifting assembly 2 is separated from the first clutch 4 and the second end of the gear shifting assembly 2 is separated from the second clutch 5, the first clutch 4 is combined, the first clutch 4 is separated from the first gear 6, the second clutch 5 is separated from the second gear 7, the automatic transmission is in a neutral gear at the moment, and the first gear 6 transmits power to a corresponding driven gear to rotate; when the first end of the gear shifting assembly 2 is combined with the first clutch 4, the first clutch 4 is in transmission connection with the first gear 6, and the automatic gearbox is engaged in a first gear at the moment; when the second end of the gear shift assembly 2 is engaged with the second clutch 5, the second clutch 5 is in driving connection with the second gear 7, and the automatic transmission is engaged in the second gear.
Example two
The difference between this embodiment and the first embodiment is as follows:
referring to fig. 1, the worm drive assembly 1 includes a worm 11, a shift motor 12, and a controller 13; the controller 13 is electrically connected with the gear shifting motor 12; one end of the worm 11 is in transmission connection with the output end of the gear shifting motor 12, and the other end of the worm 11 is in transmission connection with the worm gear transmission component 3.
Referring to fig. 1, the first gear 6 is mounted on one end of the first input shaft 8, and the other end of the first input shaft 8 is mounted with a first bearing 81; the second gear 7 is attached to one end of the second input shaft 9, and the other end of the second input shaft 9 is attached to the second bearing 91.
Referring to fig. 1, the outer diameter of the first gear 6 is smaller than the outer diameter of the second gear 7.
Referring to fig. 1, the shift assembly 2 includes a driving block 21, a shift rod 22, a first fork 23 and a second fork 24; the driving block 21 is arranged at the middle point of the gear shifting pull rod 22, the first shifting fork 23 and the second shifting fork 24 are respectively arranged at two ends of the gear shifting pull rod 22, and the first shifting fork 23 and the second shifting fork 24 are symmetrically arranged; one end of the first shifting fork 23, which is far away from the gear shifting pull rod 22, can push the first clutch 4 to be in transmission connection with the first gear 6 through the first bearing 81; one end of the second fork 24, which is far away from the shift rod 22, can push the second clutch 5 to be in transmission connection with the second gear 7 through the second bearing 91. The shift rod 22 is connected to the driving block 21, the first fork 23 and the second fork 24 via pins 25.
Referring to fig. 1, a groove 211 for connecting with the worm gear assembly 3 is opened at one side of the driving block 21 facing the worm gear assembly 3.
Referring to fig. 1, the worm gear assembly 3 includes a worm wheel 31, a rocker arm 32, and a ball head 33; the worm wheel 31 is in transmission connection with the output end of the worm driving component; one end of the rocker 32 is in transmission connection with the axis of the worm wheel 31, the other end of the rocker 32 is in transmission connection with the center of the gear shifting assembly 2 through a ball head 33, and the rocker 32 can drive the gear shifting assembly 2 to move left and right. Specifically, the ball head 33 is embedded in the groove 211 of the driving block 21 in a left-right rotatable manner, and the worm 11 is in meshing transmission with the worm wheel 31.
In the present embodiment, during the first gear shift, the controller 13 monitors the current flowing through the shift motor 12. That is, when the engagement of the first clutch 4 is completed, the shift motor 12 cannot drive the worm wheel 31 and the rocker arm 32 to rotate, and the shift motor 12 is locked, so that the current passing through the shift motor is greatly increased. The controller 13 monitors the current jump and sends a stop command, and the combination state of the first clutch 4 is kept due to the self-locking characteristic of the worm gear and worm transmission pair.
During a second gear shift, the controller 13 monitors the current through the shift motor 12. When the second clutch 5 is engaged, the gear shift motor 12 cannot drive the worm wheel 31 and the rocker 32 to rotate, and the gear shift motor 12 is locked, so that the current passing through the gear shift motor is greatly increased. The controller 13 monitors the current jump and sends a stop command, and the combination state of the second clutch 5 is maintained due to the self-locking characteristic of the worm gear and worm transmission pair.
EXAMPLE III
A method of shifting a shift mechanism of an automatic transmission, comprising the steps of:
s1: when the first clutch 4 is separated from the first gear 6 and the second clutch 5 is separated from the second gear 7, the automatic transmission is in a neutral gear;
s2: the controller 13 sends a first instruction to the gear shifting motor 12, the worm 11 rotates positively and drives the worm wheel 31 to rotate anticlockwise, the rocker arm 32 drives the first shifting fork 23 to move rightwards through the gear shifting assembly 2 under the driving of the worm wheel 31, the first end of the gear shifting assembly 2 is combined with the first clutch 4 at the moment, the first clutch 4 is in transmission connection with the first gear 6, and the automatic gearbox is engaged in a first gear;
s3: the controller 13 sends a second instruction to the gear shifting motor 12, the gear shifting motor 12 drives the worm 11 to rotate reversely and drive the worm wheel 31 to rotate clockwise, the rocker arm 32 drives the first shifting fork 23 and the second shifting fork 24 to move leftwards through the gear shifting assembly 2 under the drive of the worm wheel 31, the first clutch 4 is separated from the first gear 6 at the moment, meanwhile, the second clutch 5 is in transmission connection with the second gear 7, and the automatic gearbox is engaged in the second gear.
In summary, according to the gear shifting mechanism and the gear shifting method of the automatic transmission provided by the invention, the first clutch and the second clutch are kept in a combined state after the gear is engaged through the self-locking characteristic of the worm-gear pair transmission, the locking action is rapid and timely, the locking precision is high, and the timeliness and the high precision of gear shifting of the gear shifting mechanism are ensured; the whole structure is simple, and the cost is low.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. The gear shifting mechanism of the automatic gearbox is characterized by comprising a worm driving assembly, a gear shifting assembly, a worm gear transmission assembly, a first clutch and a second clutch;
the output end of the worm driving assembly is in transmission connection with the input end of the worm gear transmission assembly to form a worm gear pair;
the output end of the worm gear transmission assembly is in transmission connection with the midpoint of the gear shifting assembly;
the first clutch and the second clutch are disposed between the first end and the second end of the shift assembly;
when the first end of the gear shifting assembly is separated from the first clutch and the second end of the gear shifting assembly is separated from the second clutch, the first clutch is separated from the first gear and the second clutch is separated from the second gear, and the automatic gearbox is in a neutral gear at the moment;
when the first end of the gear shifting assembly is combined with the first clutch, the first clutch is in transmission connection with the first gear, and the automatic gearbox is engaged in a first gear at the moment;
when the second end of the gear shifting assembly is combined with the second clutch, the second clutch is in transmission connection with the second gear, and the automatic gearbox is in second gear engagement at the moment.
2. The shift mechanism for an automatic transmission of claim 1, wherein said worm drive assembly includes a worm, a shift motor and a controller;
the controller is electrically connected with the gear shifting motor;
one end of the worm is in transmission connection with the output end of the gear shifting motor, and the other end of the worm is in transmission connection with the worm gear transmission assembly.
3. The gearshift mechanism for an automatic transmission according to claim 1, wherein said first gear is mounted to one end of a first input shaft, said other end of said first input shaft being provided with a first bearing;
the second gear is arranged at one end of the second input shaft, and the other end of the second input shaft is provided with a second bearing.
4. A gear change mechanism for an automatic transmission according to claim 1 or 3, wherein said first gear has an outer diameter smaller than an outer diameter of said second gear.
5. The shift mechanism of an automatic transmission according to claim 3, wherein the shift assembly includes a drive block, a shift rod, a first fork and a second fork;
the driving block is arranged at the middle point of the gear shifting pull rod, the first shifting fork and the second shifting fork are respectively arranged at two ends of the gear shifting pull rod, and the first shifting fork and the second shifting fork are symmetrically arranged;
one end, far away from the gear shifting pull rod, of the first shifting fork can push the first clutch to be in transmission connection with the first gear through the first bearing;
one end, far away from the gear shifting pull rod, of the second shifting fork can push the second clutch to be in transmission connection with the second gear through the second bearing.
6. The gearshift mechanism of an automatic transmission according to claim 5, wherein a groove for connecting with the worm gear assembly is formed on one side of the driving block facing the worm gear assembly.
7. The shift mechanism for an automatic transmission according to claim 1, wherein said worm gear assembly includes a worm gear, a rocker arm and a ball head;
the worm wheel is in transmission connection with the output end of the worm driving assembly;
one end of the rocker arm is in transmission connection with the axis of the worm wheel, the other end of the rocker arm is in transmission connection with the center of the gear shifting assembly through the ball head, and the rocker arm can drive the gear shifting assembly to move left and right.
8. A method of shifting a shift mechanism of an automatic transmission, comprising the steps of:
s1: when the first clutch is separated from the first gear and the second clutch is separated from the second gear, the automatic gearbox is in a neutral gear at the moment;
s2: the controller sends a first instruction to the gear shifting motor, the worm rotates forwards and drives the worm wheel to rotate anticlockwise, the rocker arm drives the first shifting fork to move rightwards through the gear shifting assembly under the driving of the worm wheel, the first end of the gear shifting assembly is combined with the first clutch at the moment, the first clutch is in transmission connection with the first gear, and the automatic gearbox is engaged in a first gear;
s3: the controller sends a second instruction to the gear shifting motor, the gear shifting motor drives, the worm rotates reversely and drives the worm wheel to rotate clockwise, the rocker arm drives the first shifting fork and the second shifting fork to move leftwards through the gear shifting assembly under the drive of the worm wheel, the first clutch is separated from the first gear at the moment, meanwhile, the second clutch is in transmission connection with the second gear, and the automatic gearbox is connected into a second gear.
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| TW201144636A (en) * | 2010-06-11 | 2011-12-16 | meng-hao Ji | Speed-change method and speed-change mechanism for electronic vehicle |
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| CN204344901U (en) * | 2013-08-01 | 2015-05-20 | 通用汽车环球科技运作有限责任公司 | For the gearshift with clutch and synchronizer of speed changer |
| DE102013021963A1 (en) * | 2013-12-20 | 2015-06-25 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | manual transmission |
| CN104913052A (en) * | 2014-03-10 | 2015-09-16 | 通用汽车环球科技运作有限责任公司 | A manual transmission |
| CN106051070A (en) * | 2015-04-08 | 2016-10-26 | 本田技研工业株式会社 | Speed change unit |
| CN106678360A (en) * | 2015-11-11 | 2017-05-17 | 上海汽车集团股份有限公司 | Car, gearbox of car and motor gear-shifting system and unit |
| CN205592378U (en) * | 2016-04-27 | 2016-09-21 | 吉林大学 | Two keep off automatically controlled AMT actuating mechanism that shifts |
| CN206017703U (en) * | 2016-08-30 | 2017-03-15 | 长城汽车股份有限公司 | Reducer assemblies |
| CN111623091A (en) * | 2020-06-10 | 2020-09-04 | 福建中青汽车技术有限公司 | Two-gear automatic gearbox |
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Application publication date: 20210212 |