CN217107930U - Wet-type double clutch of double-clutch automatic transmission for car - Google Patents
Wet-type double clutch of double-clutch automatic transmission for car Download PDFInfo
- Publication number
- CN217107930U CN217107930U CN202220337262.7U CN202220337262U CN217107930U CN 217107930 U CN217107930 U CN 217107930U CN 202220337262 U CN202220337262 U CN 202220337262U CN 217107930 U CN217107930 U CN 217107930U
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- Prior art keywords
- clutch
- gear hub
- oil
- spline
- clutches
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- Expired - Fee Related
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 230000009977 dual effect Effects 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 6
- 239000003921 oil Substances 0.000 abstract description 39
- 239000010720 hydraulic oil Substances 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The utility model discloses a car is with two separation and reunion automatic gearbox's wet-type double clutch. The clutch mainly comprises a driving disc, an outer support, an inner support, a friction plate set and a gear hub, and can be regarded as comprising two ordinary clutches. The driving disk is connected with the engine, the outer support and the inner support are separated from each other, and power is transmitted through the gear hub. Such clutches can be engaged alternately by two clutches, and automatic shifting of the transmission is achieved. The gear shifting principle is that pressure oil is introduced into an oil way in a gear hub to push a piston to enable a friction plate set to generate friction force, and then power is transmitted to an input shaft of the transmission, and when hydraulic oil is introduced into two oil ways alternately, the power can be transmitted to the two input shafts through two clutches.
Description
Technical Field
The utility model relates to an automotive transmission field especially relates to a wet-type double clutch of double clutch DSG automatic transmission for car.
Background
With the increasing power density of vehicle transmission systems, various high performance power transmission systems have been proposed. In recent years, people in China have more and more bought automobiles with automatic transmissions and have higher requirements on the performances of the automobiles. The double-clutch automatic transmission has unique advantages, and compared with a manual transmission, the double-clutch automatic transmission has the advantages of high gear shifting efficiency, quicker and smoother gear shifting, energy loss reduction and the like; compared with other automatic transmissions, the automatic transmission has the advantages of low cost, high fuel economy and the like. The performance of a dual clutch automatic transmission is mainly determined by the dual clutch. Therefore, on the basis of the present industrial level in China, the research and development of the double clutch which has higher quality and is economical and practical is the main task of researching the double clutch automatic transmission.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a wet double clutch of a double-clutch automatic transmission for a car.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a wet type double clutch is equivalent to two common clutches which are combined together, a first clutch is located on the outer portion and connected with one input shaft through an inner support, a second clutch is located on the inner portion and connected with the other input shaft through an inner support, and a driving plate, an outer support of the first clutch, a gear hub and an outer support of the second clutch transmit power through splines.
Furthermore, the inner diameter of the parts of the first clutch is very large, so that a large cavity is left in the middle, and the inner diameter of the inner support (10) of the first clutch is ensured to be larger than the outer diameter of the outer support (5) of the second clutch, so that the second clutch can be inserted into the cavity of the inner support of the first clutch.
Furthermore, two rows of oil grooves are formed in the connection position of the first clutch outer support and the spline of the lower half portion of the gear hub, and a plurality of through holes are uniformly formed in the oil grooves in a rotating mode and used for introducing pressure oil into an oil path.
Furthermore, two oil paths with different lengths are arranged in the gear hub, two rows of oil grooves and two rows of through holes are formed in the spline of the lower half part of the gear hub and are used as inlets of the oil paths, and one row of oil grooves and one row of through holes are formed in the middle protruding part of the gear hub and the spline of the upper half part of the gear hub and are used as outlets of the two oil paths.
Furthermore, a closed space is formed between the first clutch piston and the first clutch outer support through a sealing ring, and pressure oil can enter the closed space through an oil outlet in the middle protruding portion of the gear hub to push the first clutch piston to move upwards, so that friction force is generated between the first clutch friction plate sets and power is transmitted.
Furthermore, a closed space is formed between the second clutch piston and the second clutch outer support through a sealing ring, and a row of through holes are formed in the joint of the second clutch outer support and the upper half part of the spline of the gear hub, so that pressure oil flowing out of an oil outlet in the upper half part of the spline of the gear hub can enter the closed space to push the second clutch piston to move upwards, and friction force is generated between the second clutch friction plate sets and power is transmitted.
The utility model has the advantages that:
1. the structure is very simple, the structure principle is consistent with that of a common clutch, only two clutches are combined together after being changed in size, the existing production line can be utilized during production, and the production efficiency is high in production practice.
2. By adopting the gear hub structure, the outer supports of the two clutches can be designed in a separated mode, so that the torque of an engine can be transmitted to the two clutches simultaneously, and the assembly work of the double clutches and the maintenance and replacement of damaged parts are facilitated.
3. Two oil paths of clutch hydraulic oil are arranged in the gear hub, so that the design of the oil paths can be simplified and the leakage of the hydraulic oil can be avoided.
Drawings
FIG. 1 is a schematic cross-sectional view of a wet dual clutch of a dual clutch automatic transmission for a car according to the present invention;
fig. 2 is a schematic diagram of the positions of two clutches of the wet dual clutch of the dual clutch automatic transmission for the car according to the present invention;
FIG. 3 is a schematic diagram of an oil path structure of a wet dual clutch of a dual clutch automatic transmission for a car according to the present invention;
fig. 4 is a schematic structural view of a gear hub of a wet dual clutch of the dual clutch automatic transmission for the car provided by the utility model;
fig. 5 is a schematic diagram of the connection between the driving disc of the wet dual clutch of the dual clutch automatic transmission for a car and the outer bracket of the clutch 1;
FIG. 6 is a schematic view of the connection between the inner support and the input shaft of the wet dual clutch of the dual clutch automatic transmission for a car according to the present invention;
in the figure: the clutch comprises a drive plate 1, a first clutch outer support 2, a gear hub 3, a first clutch piston 4, a second clutch outer support 5, a second clutch piston 6, a first clutch friction plate set 7, a second clutch friction plate set 8, a second clutch inner support 9, a first clutch inner support 10, an oil way 11 entering a first clutch, an oil way 12 entering a second clutch, a first clutch 13 and a second clutch 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1, a driving plate (1) is connected with a first clutch outer bracket (2) through splines and transmits torque, the first clutch outer bracket (2) is connected with the splines of the lower half part of a gear hub (3) and ensures that the lower surfaces of the first clutch outer bracket and the gear hub are in a plane, and a second clutch outer bracket (5) is connected with the splines of the upper half part of the gear hub (3) and ensures that the lower surface of the second clutch outer bracket (5) is tightly attached to the gear hub (3), so that the parts can be regarded as a whole through the function of the splines and transmit the torque of an engine together. The first clutch inner support (10) and the second clutch inner support (9) are fixed together with the two input shafts through splines respectively, so that power can be transmitted to the input shafts through the first clutch inner support and the second clutch inner support. The pistons (4) and (6) of the two clutches are positioned between the inner bracket and the outer bracket respectively, and the outer walls of the pistons are tightly attached to the inner wall of the outer bracket, so that the friction plate sets (7) and (8) can be pushed to move up and down. The two friction plate groups (7) and (8) are composed of four inner friction plates and three outer friction plates, are connected with the inner support and the outer support through splines, and are made of semimetal materials.
The first clutch piston (4) and the second clutch piston (6) are provided with ten small round tables for fixing the position of the spring, and spring retainer rings are arranged on the spring to fix the position of the spring. It is ensured that the piston can return to the initial position in the absence of pressure oil.
Referring to fig. 2, the gear hub (3) has two oil paths with different lengths, the oil path located on the outer side supplies hydraulic oil to the first clutch, and the oil path located on the inner side supplies hydraulic oil to the second clutch. Two rows of oil grooves and two rows of through holes are formed in the spline of the lower half part of the gear hub (3) and used as inlets of oil paths, and one row of oil grooves and one row of through holes are formed in the spline of the middle protruding part and the spline of the upper half part of the gear hub (3) and used as outlets of the two oil paths.
A closed space is formed between the first clutch piston (4) and the first clutch outer bracket (2) through a sealing ring, and pressure oil can enter the closed space through an oil outlet positioned in the middle convex part of the gear hub (3) to push the first clutch piston (4) to move upwards; a closed space is formed between the second clutch piston (6) and the second clutch outer support (5) through a sealing ring, and a row of through holes are formed in the connection position of the second clutch outer support (5) and the upper half part of the spline of the gear hub (3), so that pressure oil flowing out of an oil outlet in the upper half part of the spline of the gear hub (3) can enter the closed space to push the second clutch piston (6) to move upwards.
The working principle is as follows: when the transmission is used, the driving disk (1) is connected with an engine through a gear, the two inner supports are connected with input shafts of the two transmissions, and a bearing is required to be installed between the gear hub (3) and the input shafts. When pressure oil is introduced into an outer oil path, the pressure oil can enter a closed space between the first clutch piston (4) and the first clutch outer bracket (2) to push the first clutch piston (4) to move upwards, so that a friction force is generated by pressing the first clutch friction plate set (7), and the torque is transmitted to the first clutch inner bracket (10) and then to the transmission input shaft; when pressure oil is introduced into the inner side oil path, the pressure oil can enter a closed space between the second clutch piston (6) and the second clutch outer support (5) to push the second clutch piston (6) to move upwards, so that a friction force is generated by pressing the second clutch friction plate set (8), and the torque is transmitted to the second clutch inner support (9) and then to the transmission input shaft.
The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a car is with wet-type double clutch of double clutch automatic gearbox which characterized in that: the double clutch is equivalent to two common clutches which are combined together, the first clutch is sleeved at the periphery of the second clutch, the first clutch comprises a first clutch outer support (2), a first clutch piston (4), a first clutch friction plate set (7) and a first clutch inner support (10), the second clutch comprises a second clutch outer support (5), a second clutch piston (6), a second clutch friction plate set (8) and a second clutch inner support (9), and in addition, a power transmission part (1) and a gear hub (3) are arranged; the driving plate (1) is connected with the engine through a gear, the inner wall of the first clutch outer bracket (2) is provided with an internal spline which is connected with an external spline on the driving plate (1), so that power can be transmitted to the first clutch through the driving plate (1); the gear hub (3) is used for transmitting power to the second clutch, the gear hub (3) is of a structure with a middle bulge and outer splines on the upper section and the lower section, the first clutch outer support (2) is connected with the spline on the lower half part of the gear hub (3), and the second clutch outer support (5) is connected with the spline on the upper half part of the gear hub (3), so that the power is transmitted to the two clutches simultaneously, the two clutches are located at the same position in the axial direction, but the actual working areas are located on circumferences with different sizes; the middle of the inner supports of the two clutches is provided with an inner spline which is connected with the two input shafts through the spline, two oil paths with different lengths are arranged in the gear hub (3), pressure oil can respectively enter the two clutches through the two oil paths, and power can be transmitted to the transmission when the pressure oil is introduced.
2. The wet dual clutch of a dual clutch automatic transmission for a passenger car according to claim 1, characterized in that: the first clutch outer bracket (2) is provided with two rows of oil grooves at the connection part of the spline at the lower half part of the gear hub (3), and a plurality of through holes are uniformly formed in the oil grooves and used for introducing pressure oil into an oil path.
3. The wet dual clutch of a dual clutch automatic transmission for a passenger car according to claim 1, wherein: two rows of oil grooves and two rows of through holes are formed in the spline of the lower half portion of the gear hub (3) and serve as inlets of oil ways, and one row of oil grooves and one row of through holes are formed in the middle protruding portion of the gear hub (3) and the spline of the upper half portion of the gear hub and serve as outlets of the two oil ways.
4. The wet dual clutch of a dual clutch automatic transmission for a passenger car according to claim 1, wherein: a closed space is formed between the first clutch piston (4) and the first clutch outer support (2) through a sealing ring, pressure oil can enter the closed space through an oil outlet in the middle protruding portion of the gear hub (3) to push the first clutch piston (4) to move upwards, and friction force is generated between the first clutch friction plate sets (7) and power is transmitted.
5. The wet dual clutch of a dual clutch automatic transmission for a passenger car according to claim 1, wherein: a closed space is formed between the second clutch piston (6) and the second clutch outer support (5) through a sealing ring, a row of through holes are formed in the connection position of the second clutch outer support (5) and the upper half part of the gear hub (3) through a spline, so that pressure oil flowing out of an oil outlet in the upper half part of the gear hub (3) can enter the closed space to push the second clutch piston (6) to move upwards, and friction force is generated between the second clutch friction plate sets (8) and power is transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220337262.7U CN217107930U (en) | 2022-02-20 | 2022-02-20 | Wet-type double clutch of double-clutch automatic transmission for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220337262.7U CN217107930U (en) | 2022-02-20 | 2022-02-20 | Wet-type double clutch of double-clutch automatic transmission for car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217107930U true CN217107930U (en) | 2022-08-02 |
Family
ID=82597880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220337262.7U Expired - Fee Related CN217107930U (en) | 2022-02-20 | 2022-02-20 | Wet-type double clutch of double-clutch automatic transmission for car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217107930U (en) |
-
2022
- 2022-02-20 CN CN202220337262.7U patent/CN217107930U/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: 20220802 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |