CN210034380U - Gear shifting mechanism of double-clutch automatic transmission - Google Patents
Gear shifting mechanism of double-clutch automatic transmission Download PDFInfo
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- CN210034380U CN210034380U CN201920520096.2U CN201920520096U CN210034380U CN 210034380 U CN210034380 U CN 210034380U CN 201920520096 U CN201920520096 U CN 201920520096U CN 210034380 U CN210034380 U CN 210034380U
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Abstract
The utility model discloses a two separation and reunion automatic gearbox gearshift uses two declutch shafts and four shifting forks to realize the shifting of eight fender position, has simplified the structure, has reduced spare part quantity, improves the matching flexibility of derailleur. And the four gear shifting dials are respectively sleeved on the two shifting fork shafts in a pairwise manner, so that the speed changer is convenient to disassemble, assemble and repair. The shifting fork of shifting passes through the bearing and realizes removing through rolling friction mode on the declutch shift shaft, can reduce the mechanical wear between shifting fork and the declutch shift shaft, prolongs the life of spare part, improves the efficiency of shifting. A self-positioning steel ball M groove is arranged on the shifting fork, and the self-locking positioning precision of the shifting fork is proved.
Description
Technical Field
The utility model relates to a derailleur gearshift, concretely relates to two separation and reunion automatic transmission gearshifts.
Background
The double-clutch automatic transmission has the advantages that on the basis of the manual transmission, the double-clutch automatic transmission inherits the advantages of high transmission efficiency, compact running space, low price and the like of the manual transmission, the power of an engine can be always transmitted to wheels through switching between the two clutches, a vehicle can complete gear shifting under the condition of uninterrupted power, the gear shifting quality is guaranteed, and meanwhile the comfort, the power performance and the safety of an automobile are effectively improved.
In the double-clutch automatic transmission in the prior art, a shafting structure is that a middle shaft and a middle shaft are arranged between an input shaft and a differential mechanism at the same time, and only a gear shifting mechanism surrounds the input shaft when fork openings of shifting forks are gathered together. Taking a seven-gear double-clutch automatic transmission as an example, synchronizers with 8 gears are all arranged on a middle first shaft and a middle second shaft, 4 independent shifting fork shafts are mostly adopted in the existing gear shifting mechanism, a shifting fork of the corresponding synchronizer is fixed on each shifting fork shaft, and the shifting fork openings of the shifting forks extend to converge to the same position. The gear shifting structure has various parts and is not compact in structure, and a large amount of internal space of the transmission is occupied. Simultaneously, the shifting fork is driven to shift gears by the up-and-down movement of the shifting fork shaft, so that a shifting fork shaft movement space is reserved in the transmission box body, and the box body structure is complex.
Disclosure of Invention
The utility model discloses a two separation and reunion automatic gearbox gearshift, it is complicated to overcome the gearshift that exists among the prior art, consumes the problem in derailleur space, proposes under the prerequisite that satisfies gearshift function and performance, reaches compact structure, reduce cost's gearshift.
The utility model discloses a double-clutch automatic transmission gear shifting mechanism, which comprises a middle first shaft gear shifting mechanism 1, a middle second shaft gear shifting mechanism 2 and a gear shifting and transposition mechanism 3 which are mutually independent;
the middle shaft gear shifting mechanism comprises a middle shaft shifting fork shaft, a first odd-numbered gear shifting fork, a first even-numbered gear shifting fork, a first odd-numbered gear self-locking mechanism and a first even-numbered gear self-locking mechanism; the first odd-numbered gear shifting fork and the first even-numbered gear shifting fork are sleeved on the middle shaft shifting fork shaft in a hollow mode, the first odd-numbered gear shifting fork extends out of a first odd-numbered gear shifting fork opening, the first even-numbered gear shifting fork extends out of a first even-numbered gear shifting fork opening, the first odd-numbered gear self-locking mechanism achieves self-locking of the first odd-numbered gear shifting fork by locking the outer surface of the shifting fork sleeve, and the first even-numbered gear self-locking mechanism achieves self-locking of the first even-numbered gear shifting fork by locking the outer surface of the shifting fork sleeve;
the middle two-shaft gear shifting mechanism 2 comprises a middle two-shaft shifting fork shaft, a second odd-numbered gear shifting fork, a second even-numbered gear shifting fork, a second odd-numbered gear self-locking mechanism and a second even-numbered gear self-locking mechanism; the second odd-numbered gear shifting fork and the second even-numbered gear shifting fork are sleeved on the middle two-shaft shifting fork shaft in a vacant mode, the second odd-numbered gear shifting fork extends out of a second odd-numbered gear shifting fork opening, the second even-numbered gear shifting fork extends out of a second even-numbered gear shifting fork opening, the second odd-numbered gear self-locking mechanism achieves self-locking of the second odd-numbered gear shifting fork by locking the outer surface of the shifting fork sleeve, and the second even-numbered gear self-locking mechanism achieves self-locking of the second even-numbered gear shifting fork by locking the outer surface of the shifting fork;
a first interlocking structure and a second interlocking structure are arranged on the gear shifting and position changing mechanism; the first odd-numbered gear shifting fork opening and the second odd-numbered gear shifting fork opening extend to one position, a shifting block on the first interlocking structure rotates to shift one shifting fork to move up and down, and the other shifting fork is fixedly limited by the arc surface of a winding drum of an interlocking positioning surface on the first interlocking structure to realize gear interlocking; the first even-numbered shift fork port and the second even-numbered shift fork port extend to one position, a shifting block on the second interlocking structure rotates to shift one shift fork to move up and down, and the other shift fork is fixedly limited by the arc surface of a winding drum of the interlocking positioning surface on the second interlocking structure, so that gear interlocking is realized.
Furthermore, the rotation time sequence of the shifting block on the first interlocking structure and the shifting block on the second interlocking structure is set to be that when one of the shifting blocks shifts the corresponding shifting fork to be in gear, the other shifting block shifts the corresponding shifting fork to be in gear or be out of gear.
Furthermore, the first odd-numbered gear shifting fork is a first-gear fifth-gear shifting fork, the first even-numbered gear shifting fork is a fourth-gear reverse gear shifting fork, the second odd-numbered gear shifting fork is a third-gear seventh-gear shifting fork, and the second even-numbered gear shifting fork is a second-gear sixth-gear shifting fork.
Further, first odd number keeps off, first even number keeps off, second odd number keeps off and second even number keeps off self-locking mechanism all includes: a self-positioning steel ball M groove, a self-locking pin and a positioning steel ball; the self-positioning steel ball M groove is welded and fixed on the outer surface of the shifting fork sleeve, the self-locking pin is fixed on the transmission box body, and a spring of the self-locking pin pushes the positioning steel ball to be propped against the surface of the self-positioning steel ball M groove to realize shifting fork self-locking.
Further, rolling friction is realized through the bearing between the shifting fork body of the first odd-numbered gear shifting fork or the first even-numbered gear shifting fork or the second odd-numbered gear shifting fork or the second even-numbered gear shifting fork and the body of the middle shaft shifting fork shaft or the middle shaft shifting fork shaft, the bearing is in interference fit with the shifting fork body, and the shifting fork body is axially positioned through the step inside the shifting fork body.
The utility model discloses beneficial technological effect does:
1) the eight-gear shifting is realized by using the two shifting fork shafts and the four shifting forks, the structure is simplified, the number of parts is reduced, and the matching flexibility of the transmission is improved. And the four gear shifting dials are respectively sleeved on the two shifting fork shafts in a pairwise manner, so that the speed changer is convenient to disassemble, assemble and repair.
2) The shifting fork of shifting passes through the bearing and realizes removing through rolling friction mode on the declutch shift shaft, can reduce the mechanical wear between shifting fork and the declutch shift shaft, prolongs the life of spare part, improves the efficiency of shifting.
3) A self-positioning steel ball M groove is arranged on the shifting fork, and the self-locking positioning precision of the shifting fork is proved.
Drawings
FIG. 1 is a schematic structural view of a shifting mechanism of a dual clutch automatic transmission according to the present invention;
FIG. 2 is a cross-sectional view of the self-locking mechanism;
FIG. 3 is a schematic view of the operation of the pusher and the arc surface of the drum with the interlocked positioning surfaces;
FIG. 4 is a schematic view of the operation of the shift block at another angle with the arc surface of the drum with the interlocking positioning surface;
FIG. 5 is an operational schematic of a dual clutch automatic transmission shift mechanism;
FIG. 6 is a view showing the structure of each shift fork and its sleeved fork shaft.
Wherein, the middle first shaft gear shifting mechanism-1, the middle first shaft fork shaft-11, the first-gear five-gear shifting fork-13, the fourth-gear reverse gear shifting fork-12, the first-gear five-gear self-locking mechanism-14, the fourth-gear reverse gear self-locking mechanism-15, the first-gear five-gear shifting fork port-16, the fourth-gear reverse gear shifting fork port-17, the middle second shaft gear shifting mechanism-2, the middle second shaft fork shaft-21, the third-gear seven-gear shifting fork-22, the second-gear six-gear shifting fork-23, the third-gear seven-gear self-locking mechanism-24, the second-gear six-gear self-locking mechanism-25, the third-gear seven-gear shifting fork port-26, the second-gear six-gear shifting fork port-27, the bearing-28, the self-positioning steel ball M groove-241, the self-locking pin-242, the positioning steel ball-243, a shifting block-32.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 to 6, the utility model discloses a two separation and reunion automatic transmission gearshift, including mutually independent middle one shaft gearshift 1, middle two shafts gearshift 2 and the transposition mechanism 3 of shifting.
The middle shaft gear shifting mechanism 1 comprises a middle shaft shifting fork shaft 11, a first odd-numbered gear shifting fork, a first even-numbered gear shifting fork, a first odd-numbered gear self-locking mechanism and a first even-numbered gear self-locking mechanism. One way is that: the first odd-numbered gear shifting fork is a first-gear fifth-gear shifting fork 13, the first even-numbered gear shifting fork is a fourth-gear reverse gear shifting fork 12, the first odd-numbered gear self-locking mechanism is a first-gear fifth-gear self-locking mechanism 14, and the first even-numbered gear self-locking mechanism is a fourth-gear reverse gear self-locking mechanism 15. The first-gear fifth-gear shifting fork 13 and the fourth-gear reverse-gear shifting fork 12 are sleeved on the middle shaft shifting fork shaft 11 in a rolling friction mode through a bearing 28, the bearing 28 is in interference fit with the shifting fork body, a first-gear fifth-gear shifting fork opening 16 is extended out of the first-gear fifth-gear shifting fork 13, a fourth-gear reverse-gear shifting fork opening 17 is extended out of the fourth-gear reverse-gear shifting fork 12 through step axial positioning inside the shifting fork body, a first-gear fifth-gear self-locking mechanism 14 achieves self-locking of the first-gear fifth-gear shifting fork 13 through locking of the outer surface of a shifting fork sleeve, and a fourth-gear reverse-gear self-locking mechanism 15 achieves self-locking of.
The middle two-shaft gear shifting mechanism 2 comprises a middle two-shaft shifting fork shaft 21, a second odd-numbered gear shifting fork, a second even-numbered gear shifting fork, a second odd-numbered gear self-locking mechanism and a second even-numbered gear self-locking mechanism. One way is that: the second odd-numbered gear shifting fork is a third-gear seventh-gear shifting fork 22, the second even-numbered gear shifting fork is a second-gear sixth-gear shifting fork 23, the second odd-numbered gear self-locking mechanism is a third-gear seventh-gear self-locking mechanism 24, and the second even-numbered gear self-locking mechanism is a second-gear sixth-gear self-locking mechanism 25. The three-gear seven-gear shifting fork 22 and the two-gear six-gear shifting fork 23 are sleeved on the middle two-shaft shifting fork shaft 21 in a rolling friction mode through a bearing 28, the bearing 28 is in interference fit with the shifting fork body, a three-gear seven-gear shifting fork opening 26 is formed in the three-gear seven-gear shifting fork 22 in an extending mode, a two-gear six-gear shifting fork opening 27 is formed in the two-gear six-gear shifting fork 23 in an extending mode, the three-gear seven-gear self-locking mechanism 24 achieves self-locking of the three-gear seven-gear shifting fork 22 through locking of the outer surface of a shifting fork sleeve, and the two-gear six-gear self-locking mechanism 25 achieves self-.
A first interlocking structure and a second interlocking structure are arranged on the gear shifting and transposition mechanism 3; the first-gear fifth-gear shifting fork opening 16 and the third-gear seventh-gear shifting fork opening 26 extend to one position, one shifting fork is shifted to move up and down by rotating a shifting head 32 on the first interlocking structure, and the other shifting fork is fixedly limited by the cambered surface of an interlocking positioning surface winding drum 31 on the first interlocking structure, so that gear interlocking is realized. The fork opening 17 of the fourth reverse gear shifting fork and the fork opening 27 of the second sixth gear shifting fork extend to one position, one shifting fork is shifted to move up and down by rotating the shifting head 32 on the second interlocking structure, and the other shifting fork is fixedly limited by the cambered surface of the drum 31 of the interlocking positioning surface on the second interlocking structure, so that gear interlocking is realized. The rotation time sequence of the shifting block 32 on the first interlocking structure and the shifting block 32 on the second interlocking structure is set to be that when one shifting block shifts the corresponding shifting fork to be in gear, the other shifting block shifts the corresponding shifting fork to be in gear or be out of gear.
First keep off five keep off self-locking mechanism 14, four keep off reverse gear self-locking mechanism 15, three keep off seven keep off self-locking mechanism 24, keep off six keep off self-locking mechanism 25 and all contain: a self-positioning steel ball M slot 241, a self-locking pin 242 and a positioning steel ball 243. The self-positioning steel ball M groove 241 is fixed on the outer surface of the shifting fork sleeve in a welded mode, the self-locking pin 242 is fixed on the transmission box body, and a spring of the self-locking pin 242 pushes the positioning steel ball 243 to be abutted against the surface of the self-positioning steel ball M groove 241 to achieve shifting fork self-locking.
The operating principle of the gear shifting mechanism of the double-clutch automatic transmission is as follows:
realize the combination of shifting gears of many grades of gears: the first-gear fifth-gear shifting fork 13 and the fourth-gear reverse-gear shifting fork 12 are sleeved on the middle first-shaft shifting fork shaft 11 in an empty mode, the third-gear seventh-gear shifting fork 22 and the second-gear sixth-gear shifting fork 23 are sleeved on the middle second-shaft shifting fork shaft 21 in an empty mode, and the middle first-shaft shifting fork shaft 11 and the middle second-shaft shifting fork shaft 21 are independent from each other, so that multiple simultaneous gear engaging modes of the double-clutch automatic transmission can be realized; such as: reverse and first gear, first and second gear, second and third gear, third and fourth gear, fourth and fifth gear, fifth and sixth gear, sixth and seventh gear; and gear jumping and gear engaging: the first gear and the fourth gear, the second gear and the fifth gear, the third gear and the sixth gear, and the fourth gear and the seventh gear.
Realize keeping off the position auto-lock after putting into gear and neutral gear: when each shifting fork is in each gear or neutral gear, a spring in the self-locking pin 242 pushes the positioning steel ball 243 to be dead against the groove of the self-positioning steel ball M groove 241 of the gear, so that gear self-locking is realized. When the gear is shifted, the shifting fork moves to a target gear, the self-positioning steel ball M groove 241 pushes the positioning steel ball 243 to compress the spring, the gear is separated, and after the gear is hung into a preset gear, the spring extends to realize self-locking.
The interlocking of gears is realized: the first-gear fifth-gear shifting fork opening 16 and the third-gear seventh-gear shifting fork opening 27 are controlled by adopting a first interlocking structure, and the second-gear sixth-gear shifting fork opening 26 and the fourth-gear reverse-gear shifting fork opening 17 are controlled by adopting a second interlocking structure. In the gear engaging process, for engaging a first gear as an example, the first interlocking structure of the shift head 32 shifts the first-gear fifth-gear shifting fork 13 to move on the middle shaft shifting fork shaft 11 for shifting gears, the interlocking positioning surface winding drum 31 of the first interlocking structure is fixed on the cambered surface to limit the third-gear seventh-gear shifting fork 22 to move on the middle shaft shifting fork shaft 21 for shifting gears, meanwhile, the second interlocking structure of the shift head 32 shifts the second-gear sixth-gear shifting fork 23 to pre-engage or disengage on the middle shaft shifting fork shaft 21, and the interlocking positioning surface winding drum 31 of the second interlocking structure is fixed on the cambered surface to limit the fourth-gear reverse-gear shifting fork to move on the middle shaft 11 for shifting gears. Therefore, gear interlocking in the gear shifting process is realized.
Claims (5)
1. Double clutch automatic transmission gearshift, its characterized in that: the gear shifting mechanism comprises a middle one-shaft gear shifting mechanism (1), a middle two-shaft gear shifting mechanism (2) and a gear shifting and transposition mechanism (3) which are mutually independent;
the middle shaft gear shifting mechanism (1) comprises a middle shaft shifting fork shaft (11), a first odd-numbered gear shifting fork, a first even-numbered gear shifting fork, a first odd-numbered gear self-locking mechanism and a first even-numbered gear self-locking mechanism; the first odd-numbered gear shifting fork and the first even-numbered gear shifting fork are sleeved on the middle shaft shifting fork shaft (11) in a free mode, the first odd-numbered gear shifting fork extends out of a first odd-numbered gear shifting fork opening, the first even-numbered gear shifting fork extends out of a first even-numbered gear shifting fork opening, the first odd-numbered gear self-locking mechanism achieves self-locking of the first odd-numbered gear shifting fork by locking the outer surface of a shifting fork sleeve, and the first even-numbered gear self-locking mechanism achieves self-locking of the first even-numbered gear shifting fork by locking the outer surface of a shifting fork sleeve;
the middle two-shaft gear shifting mechanism (2) comprises a middle two-shaft shifting fork shaft (21), a second odd-numbered gear shifting fork, a second even-numbered gear shifting fork, a second odd-numbered gear self-locking mechanism and a second even-numbered gear self-locking mechanism; the second odd-numbered gear shifting fork and the second even-numbered gear shifting fork are sleeved on the middle two-shaft shifting fork shaft in a vacant mode, the second odd-numbered gear shifting fork extends out of a second odd-numbered gear shifting fork opening, the second even-numbered gear shifting fork extends out of a second even-numbered gear shifting fork opening, the second odd-numbered gear self-locking mechanism achieves self-locking of the second odd-numbered gear shifting fork by locking the outer surface of the shifting fork sleeve, and the second even-numbered gear self-locking mechanism achieves self-locking of the second even-numbered gear shifting fork by locking the outer surface of the shifting fork sleeve;
a shaft body of the gear shifting and transposition mechanism (3) is provided with a first interlocking structure and a second interlocking structure; the fork openings of the first odd-numbered gear shifting fork and the second odd-numbered gear shifting fork extend to one position, one shifting fork is shifted to move up and down by rotating a shifting head (32) on the first interlocking structure, and the other shifting fork is fixedly limited by the cambered surface of an interlocking positioning surface winding drum (31) on the first interlocking structure, so that gear interlocking is realized; the fork openings of the first even-numbered shift forks and the fork openings of the second even-numbered shift forks extend to one position, one shift fork is stirred to move up and down by rotating a shifting head (32) on the second interlocking structure, and the other shift fork is fixedly limited by the cambered surface of an interlocking positioning surface winding drum (31) on the second interlocking structure, so that gear interlocking is realized.
2. The dual clutch automatic transmission shift mechanism of claim 1, wherein: the rotation time sequence of the shifting block on the first interlocking structure and the shifting block on the second interlocking structure is set to be that when one shifting block shifts the corresponding shifting fork to be in gear, the other shifting block shifts the corresponding shifting fork to be in gear or out of gear.
3. The dual clutch automatic transmission shift mechanism of claim 2, wherein: the first odd-numbered gear shifting fork is a first-gear fifth-gear shifting fork, the first even-numbered gear shifting fork is a fourth-gear reverse gear shifting fork, the second odd-numbered gear shifting fork is a third-gear seventh-gear shifting fork, and the second even-numbered gear shifting fork is a second-gear sixth-gear shifting fork.
4. The dual clutch automatic transmission shift mechanism of claim 3, wherein: first odd number keeps off, first even number keeps off, second odd number keeps off and second even number keeps off self-locking mechanism all contains: a self-positioning steel ball M groove (241), a self-locking pin (242) and a positioning steel ball (243); the self-positioning steel ball M groove (241) is welded and fixed on the outer surface of a shifting fork sleeve, a self-locking pin (242) is fixed on a transmission box body, and a spring of the self-locking pin (242) pushes a positioning steel ball (243) to be dead against the surface of the self-positioning steel ball M groove (241) to realize shifting fork self-locking.
5. The dual clutch automatic transmission shift mechanism of claim 4, wherein: the shifting fork body of the first odd-numbered gear shifting fork or the first even-numbered gear shifting fork or the second odd-numbered gear shifting fork or the second even-numbered gear shifting fork and the body of the middle first-shaft shifting fork shaft or the middle second-shaft shifting fork shaft realize rolling friction through a bearing (28), and the bearing (28) is in interference fit with the shifting fork body and is axially positioned through the step inside the shifting fork body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920520096.2U CN210034380U (en) | 2019-04-17 | 2019-04-17 | Gear shifting mechanism of double-clutch automatic transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920520096.2U CN210034380U (en) | 2019-04-17 | 2019-04-17 | Gear shifting mechanism of double-clutch automatic transmission |
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| CN210034380U true CN210034380U (en) | 2020-02-07 |
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| CN201920520096.2U Active CN210034380U (en) | 2019-04-17 | 2019-04-17 | Gear shifting mechanism of double-clutch automatic transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899515A (en) * | 2019-04-17 | 2019-06-18 | 重庆青山工业有限责任公司 | Double-clutch automatic gearbox gearshift |
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- 2019-04-17 CN CN201920520096.2U patent/CN210034380U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109899515A (en) * | 2019-04-17 | 2019-06-18 | 重庆青山工业有限责任公司 | Double-clutch automatic gearbox gearshift |
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