CN112443590B - Vehicle and wet-type double clutch - Google Patents
Vehicle and wet-type double clutch Download PDFInfo
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- CN112443590B CN112443590B CN201910841396.5A CN201910841396A CN112443590B CN 112443590 B CN112443590 B CN 112443590B CN 201910841396 A CN201910841396 A CN 201910841396A CN 112443590 B CN112443590 B CN 112443590B
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- outer hub
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/10—Clutch systems with a plurality of fluid-actuated 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention relates to the field of clutches, and particularly discloses a wet-type double clutch, which comprises a main hub, a first clutch and a second clutch, wherein the first clutch comprises a first outer hub, a first inner hub, a first friction plate group and a first piston, which are fixedly connected to the main hub; the second clutch comprises a second outer hub, a second inner hub, a second friction plate set and a second piston, wherein the second outer hub, the second inner hub, the second friction plate set and the second piston are fixedly connected to the main hub and arranged on the inner side of the first outer hub; a first balance cavity is formed between the first piston and the second outer hub, a second balance cavity is formed between the second piston and the main hub, the first balance cavity and the second balance cavity are communicated with each other and are radially arranged, a first oil duct is formed in the main hub, and the first oil duct is communicated with the first balance cavity or the second balance cavity. The wet-type double clutch can reduce the axial length of the clutch assembly, optimize the overall layout, has a more compact structure, is more favorable for the arrangement of the transmission assembly, and can also reduce the processing difficulty and the processing cost.
Description
Technical Field
The invention relates to the technical field of clutches, in particular to a vehicle and a wet-type double clutch.
Background
A dual clutch transmission (twin clutch) has the flexibility of a manual transmission and the comfort of an automatic transmission, and can provide uninterrupted power output, and thus is widely used in various types of automobiles. The double clutch comprises a dry clutch and a wet clutch, wherein the wet clutch controls the separation and combination of the clutches through oil pressure, and the double clutch has the advantages of good heat dissipation effect, long service life, stable power transmission and the like. However, the existing wet double clutch has the following disadvantages:
1. four oil passages are axially arranged on the main hub, and each oil passage has a corresponding wall thickness as a support, so that the axial size of the main hub is longer, and the overall arrangement of the transmission is influenced;
2. because the axial oil passage needs to be provided with the axial hole on the end face of the main hub for penetrating and draining, the more the oil passage is, the more the number of the oil holes penetrating the oil passage is, and the processing difficulty and the cost are increased;
3. the pressure chambers and the balance chambers of the two clutches are axially and sequentially arranged, so that the axial length of the area close to the axis is increased, the utilization rate of the axial space of the area far away from the axis is reduced, and the integral arrangement of the transmission is influenced.
Under the current trend of automobile technology development, how to further simplify the structure, reduce the volume and reduce the processing and production cost of the wet double clutch under the condition of ensuring the function and performance of the wet double clutch is an important technical problem to be solved by the technical personnel in the field at present.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a vehicle and a wet-type dual clutch, which can reduce the axial length of a clutch assembly, optimize the overall layout, have a more compact structure, facilitate the arrangement of a transmission assembly, and reduce the processing difficulty and the processing cost.
Based on this, in one aspect of the present invention, there is provided a wet type dual clutch including:
the clutch comprises a main hub, a first clutch and a second clutch, wherein the first clutch and the second clutch are sleeved on the main hub;
the first clutch comprises a first outer hub fixedly connected to the main hub, a first inner hub, a first friction plate set and a first piston capable of moving along the axial direction to press or release the first friction plate set;
the second clutch comprises a second outer hub, a second inner hub, a second friction plate set and a second piston, wherein the second outer hub, the second inner hub and the second friction plate set are fixedly connected to the main hub and arranged on the inner side of the first outer hub, and the second piston can axially move to press or release the second friction plate set;
the first piston is axially slidably connected between the first outer hub and the second outer hub, and the second piston is axially slidably connected between the second outer hub and the main hub;
a first balance cavity is formed between the first piston and the second outer hub, a second balance cavity is formed between the second piston and the main hub, the first balance cavity and the second balance cavity are communicated with each other and are radially arranged, a first oil duct is formed in the main hub, and the first oil duct is communicated with the first balance cavity or the second balance cavity.
Preferably, the second outer hub has a first oil hole formed therein, the second piston has a second oil hole formed therein, and the first oil hole and the second oil hole communicate the first balance chamber with the second balance chamber.
Preferably, one end of the first friction plate group facing the first piston is provided with a first elastic member connected with the first outer hub, and one end of the second friction plate group facing the second piston is provided with a second elastic member connected with the second outer hub.
Preferably, a first pressure chamber is formed among the first outer hub, the first piston and the second outer hub, a second pressure chamber is formed among the second outer hub, the second piston and the main hub, and the first pressure chamber and the second pressure chamber are distributed along the radial direction;
and the main hub is provided with a second oil duct communicated with the first pressure cavity and a third oil duct communicated with the second pressure cavity.
Preferably, a first balance piston is connected between the first piston and the second outer hub, and a second balance piston is connected between the second piston and the main hub;
a third elastic piece used for providing restoring elastic force for promoting the first piston to be away from the first friction plate set is connected between the first balance piston and the first piston, and a fourth elastic piece used for providing restoring elastic force for promoting the second piston to be away from the second friction plate set is connected between the second balance piston and the second piston.
Preferably, the first elastic member and the second elastic member are both wave springs, and the third elastic member and the fourth elastic member are both spiral springs provided in the axial direction.
Preferably, the wet double clutch further comprises a driving plate connected to the first outer hub;
a first clamp spring is arranged between the driving disc and the first outer hub, a second clamp spring is arranged between the second friction plate group and the second outer hub, and the driving disc is connected with the first outer hub through a spline and the first clamp spring;
a first limiting device is arranged between the driving disc and the first inner hub, a second limiting device is arranged between the first inner hub and the second inner hub, and a third limiting device is arranged between the second inner hub and the main hub.
Preferably, the first friction plate group and the second friction plate group are arranged along the radial direction;
the first outer hub and the first inner hub are respectively connected to two radial sides of the first friction plate group, the second outer hub and the second inner hub are respectively connected to two radial sides of the second friction plate group, and a third oil hole, a fourth oil hole, a fifth oil hole and a sixth oil hole which are mutually communicated are respectively formed in the first outer hub, the first inner hub, the second outer hub and the second inner hub;
and a seventh oil hole is formed in the position, close to the main hub, of the second balance piston, and the seventh oil hole is communicated with the second balance cavity and the sixth oil hole.
Preferably, the first balance piston is in interference fit with the first piston through a sealing element, the second balance piston is in interference fit with the second piston through a sealing element, and the first piston is in interference fit with the first outer hub and the second outer hub through a sealing element;
a first sealing ring is arranged between the second piston and the second outer hub, a second sealing ring is arranged between the second piston and the main hub, the second piston is in interference fit with the second outer hub through the first sealing ring, and the second piston is in interference fit with the main hub through the second sealing ring;
and the main hub is provided with a third clamp spring and is connected with the second balance piston through the third clamp spring.
In another aspect of the present invention, a vehicle is further provided, which includes the wet double clutch in any one of the above technical solutions.
Compared with the prior art, the invention has the beneficial effects that:
the wet type double clutch comprises a main hub, a first clutch and a second clutch, wherein the first clutch and the second clutch are sleeved on the main hub, the first clutch comprises a first outer hub, a first inner hub, a first friction plate group and a first piston, the second clutch comprises a second outer hub, a second inner hub, a second friction plate group and a second piston, the second outer hub is arranged on the inner side of the first outer hub, a first balance cavity is formed between the first piston and the second outer hub, a second balance cavity is formed between the second piston and the main hub, the first balance cavity and the second balance cavity are communicated with each other and are radially arranged, a first oil duct communicated with the first balance cavity or the second balance cavity is arranged on the main hub, the main hub provides balance oil for the first balance cavity and the second balance cavity through the first oil duct, so that the first balance cavity and the second balance cavity can share one oil duct, and the problem that the first balance cavity and the second balance cavity are respectively provided with the oil duct on the main hub is solved, the processing difficulty and the processing cost are reduced, and meanwhile, because the oil passages are axially arranged along the main hub, the number of the oil passages is small, the axial length of the main hub can be reduced, and the double clutch is more compact in structure and smaller in occupied space. In addition, first balanced chamber and the radial arrangement of second balanced chamber also can make the double clutch more even in radial ascending arrangement, and overall contour is more regular, has avoided being close to the regional axial length of axis longer, has kept away from the regional short problem of axial length of axis, and overall layout is more reasonable, effectively improves the space availability factor, more is favorable to arranging of derailleur assembly.
Drawings
Fig. 1 is a schematic diagram of a wet dual clutch provided in an embodiment of the present invention;
FIG. 2 is a schematic illustration of a first clutch of the embodiment of the present invention;
fig. 3 is a schematic diagram of a second clutch of the embodiment of the invention.
10, a main hub; 11. a first oil passage; 12. a second oil passage; 13. a third oil passage; 14. a third clamp spring; 15. a main oil gallery; 16. a first oil inlet; 17. a second oil inlet; 20. A first clutch; 21. a first outer hub; 211. a third oil hole; 22. a first inner hub; 221. A fourth oil hole; 23. a first friction plate set; 24. a first piston; 25. a first balance chamber; 26. a first elastic member; 27. a first pressure chamber; 28. a first balance piston; 29. a third elastic member; 30. a second clutch; 31. a second outer hub; 311. a first oil hole; 312. a second clamp spring; 313. a fifth oil hole; 32. a second inner hub; 321. a sixth oil hole; 33. a second friction plate set; 34. a second piston; 341. a second oil hole; 35. a second equilibrium chamber; 36. a second elastic member; 37. a second pressure chamber; 38. a second balance piston; 381. a seventh oil hole; 39. A fourth elastic member; 40. a drive disc; 41. a first clamp spring; 50. a first limiting device; 60. A second limiting device; 70. a third limiting device; 80. a first seal ring; 90. and a second seal ring.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred apparatus or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, the wet dual clutch of the present invention is schematically illustrated, and includes a main hub 10, and a first clutch 20 and a second clutch 30 sleeved on the main hub 10. As shown in fig. 2, the first clutch 20 includes a first outer hub 21, a first inner hub 22, a first friction plate set 23, and a first piston 24, and the first outer hub 21 is fixedly connected to the main hub 10. As shown in fig. 3, the second clutch 30 includes a second outer hub 31, a second inner hub 32, a second friction plate set 33 and a second piston 34, and the second outer hub 31 is fixedly connected to the main hub 10 and is disposed inside the first outer hub 21. In the present embodiment, the first outer hub 21 and the second outer hub 31 are both welded to the main hub 10. The first piston 24 is axially slidably connected between the first outer hub 21 and the second outer hub 31, one end of the first piston 24 faces one end of the first friction plate set 23, and the first piston 24 is axially movable to press or release the first friction plate set 23. The second piston 34 is axially slidably connected between the second outer hub 31 and the main hub 10, one end of the second piston 34 is opposite to one end of the second friction plate set 33, and the second piston 34 is axially movable to press or release the second friction plate set 33.
More importantly, as shown in fig. 1, a first balance cavity 25 is formed between the first piston 24 and the second outer hub 31, a second balance cavity 35 is formed between the second piston 34 and the main hub 10, both the first balance cavity 25 and the second balance cavity 35 are used for storing balance oil, the first balance cavity 25 and the second balance cavity 35 are communicated with each other and radially arranged, the main hub 10 is provided with a first oil passage 11, the first oil passage 11 penetrates through the peripheral wall of the main hub 10, the main oil passage 15 is arranged inside the main hub 10, and the first oil passage 11 communicates the first balance cavity 25 or the second balance cavity 35 with the main oil passage 15. In the present embodiment, the first balance chamber 25 is farther from the axis, the second balance chamber 35 is closer to the axis, and the second balance chamber 35 communicates with the main oil gallery 15 through the first oil gallery 11. Thus, the balance oil can enter the second balance cavity 35 from the main oil passage 15 through the first oil passage 11 and then radially flow into the first balance cavity 25 from the second balance cavity 35, so that one oil passage supplies oil to two balance cavities, and the number of the oil passages is reduced.
According to the wet-type double clutch based on the technical characteristics, the first balance cavity 25 and the second balance cavity 35 are communicated with each other and are radially arranged, the first oil channel 11 communicated with the first balance cavity 25 or the second balance cavity 35 is formed in the main hub 10, and the main hub 10 supplies balance oil to the first balance cavity 25 and the second balance cavity 35 through the first oil channel 11, so that the first balance cavity 25 and the second balance cavity 35 can share one oil channel, the problem that the oil channels are required to be formed in the main hub 10 for the first balance cavity 25 and the second balance cavity 35 respectively is avoided, the number of the oil channels is reduced, the processing difficulty and the processing cost are reduced, and meanwhile, the oil channels are arranged along the axial direction of the main hub 10 and are small in number, so that the axial length of the main hub 10 can be reduced, and the structure of the double clutch is more compact and the occupied space is smaller. In addition, first balanced chamber 25 and the radial arrangement of second balanced chamber 35 also can make the double clutch more even in radial ascending arrangement, and overall profile is more regular, has avoided being close to the regional axial length of axis longer, has kept away from the regional short problem of axial length of axis, and overall layout is more reasonable, effectively improves space availability factor, more is favorable to arranging of derailleur assembly.
Specifically, a first oil hole 311 is opened in the second outer hub 31, a second oil hole 341 is opened in the second piston 34, and the first oil hole 311 and the second oil hole 341 enable the first balance cavity 25 to communicate with the second balance cavity 35, so that the balance oil entering the second balance cavity 35 from the main oil gallery 15 through the first oil gallery 11 can enter the first balance cavity 25 through the second oil hole 341 and the first oil hole 311 in sequence, and the first balance cavity 25 and the second balance cavity 35 are supplied with oil at the same time.
Preferably, the first friction plate group 23 is provided with a first elastic member 26 at an end facing the first piston 24, the second friction plate group 33 is provided with a second elastic member 36 at an end facing the second piston 34, the first elastic member 26 is connected with the first outer hub 21, and the second elastic member 36 is connected with the second outer hub 31. Further preferably, the first elastic member 26 and the second elastic member 36 are both wave springs having splines, the first elastic member 26 is connected to the first outer hub 21 by the splines, and the second elastic member 36 is connected to the second outer hub 31 by the splines. The wave spring is added between the friction plate set and the piston, the half-joint point is judged by utilizing the rigidity change point of the wave spring, the situation that a pressure point corresponding to artificially defined transmission of corresponding torque is the half-joint point is replaced, the logic of judging the half-joint point of the clutch is changed, the precision of searching the pressure corresponding to the half-joint point is improved, the driving smoothness is improved, and the transmission efficiency is improved. Specifically, taking the first piston 24 as an example, when the first piston 24 moves axially toward the first friction plate set 23, the axial displacement of the first piston 24 and the magnitude of the oil pressure in the first pressure chamber 27 are detected, and a curve of the displacement of the first piston 24 as a function of the oil pressure in the first pressure chamber 27 is drawn, so as to form a spring stiffness curve, when the first piston 24 continues to move axially and the first piston 24 just starts to contact (directly contact or indirectly contact through an elastic member) with the first friction plate set 23, the first elastic member 26 is pressed, the first elastic member 26 starts to generate a reverse acting force, which is superimposed on the stiffness of the existing return spring, and simultaneously, the axial movement of the first piston 24 is hindered, so that the slope of the spring stiffness curve acting on the first piston 24 immediately changes, and a break point occurs, which corresponds to a pressure point, the half joint point can be determined.
Further, a first pressure chamber 27 is formed between the first outer hub 21, the first piston 24 and the second outer hub 31, and a second pressure chamber 37 is formed between the second outer hub 31, the second piston 34 and the main hub 10, specifically, the first pressure chamber 27 is located inside the first outer hub 21, on the right side of the first piston 24 and outside the second outer hub 31, the second pressure chamber 37 is located inside the second outer hub 31, on the right side of the second piston 34 and outside the main hub 10, and the first pressure chamber 27 and the second pressure chamber 37 are distributed in the radial direction. The peripheral wall of the main hub 10 is provided with a second oil passage 12 communicated with the first pressure chamber 27 and a third oil passage 13 communicated with the second pressure chamber 37, the hydraulic oil flowing from the first oil inlet 16 enters the first pressure cavity 27 through the second oil passage 12, the hydraulic oil flowing from the second oil inlet 17 enters the second pressure cavity 37 through the third oil passage 13, the hydraulic oil entering the first pressure cavity 27/the second pressure cavity 37 can push the first piston 24/the second piston 34 to move leftwards, and gradually press the first friction plate group 23/the second friction plate group 33, the first friction plate group 23 can be pressed to enable the first outer hub 21 and the first inner hub 22 to be synchronous, and the second friction plate group 33 is pressed to enable the second outer hub 31 and the second inner hub 32 to be synchronous, so that power transmission is achieved respectively.
Preferably, a first balance piston 28 is connected between the first piston 24 and the second outer hub 31, a second balance piston 38 is connected between the second piston 34 and the main hub 10, a third elastic member 29 is connected between the first balance piston 28 and the first piston 24, the third elastic member 29 is used for providing a return elastic force for urging the first piston 24 to move away from the first friction plate set 23, a fourth elastic member 39 is connected between the second balance piston 38 and the second piston 34, and the fourth elastic member 39 is used for providing a return elastic force for urging the second piston 34 to move away from the second friction plate set 33. The third elastic member 29 and the fourth elastic member 39 are preferably helical springs arranged along the axial direction, when the hydraulic oil in the first/second pressure chambers 27/37 rises to a certain extent, the hydraulic oil pushes the first/second pistons 24/34 to move to the left, so that the first/second elastic members 26/36 compress; when the hydraulic oil pressure in the first/second pressure chambers 27/37 decreases, the elastic force of the third/fourth elastic members 29/39 urges the first/second pistons 24/34 to return to the right. In other embodiments, the third elastic member 29 and the fourth elastic member 39 can be replaced by other springs such as disc springs, so long as the same function can be achieved, and the description thereof is omitted.
Further, the wet-type dual clutch further includes a driving plate 40 connected to the first outer hub 21, a first snap spring 41 is disposed between the driving plate 40 and the first outer hub 21, and the driving plate 40 is connected to the first outer hub 21 through a spline and the first snap spring 41. A second snap spring 312 is arranged between the second friction plate group 33 and the second outer hub 31, and the second friction plate group 33 is connected with the second outer hub 31 through a spline and the second snap spring 312.
A first limiting device 50 is arranged between the driving disc 40 and the first inner hub 22, a second limiting device 60 is arranged between the first inner hub 22 and the second inner hub 32, a third limiting device 70 is arranged between the second inner hub 32 and the main hub 10, and the first limiting device 50, the second limiting device 60 and the third limiting device 70 all play a limiting role so that the relative positions of the driving disc 40, the first inner hub 22, the second inner hub 32 and the main hub 10 are fixed. In this embodiment, the first position-limiting device 50 is preferably a plastic retainer ring, and the second position-limiting device 60 and the third position-limiting device 70 are preferably thrust bearings. It will be appreciated that in other embodiments, the first limiting device 50 may be replaced with a thrust bearing.
In a preferred embodiment, the first friction plate set 23 and the second friction plate set 33 are arranged in the radial direction, so that the length of the clutch in the axial direction is further reduced. In the present embodiment, each of the first and second friction plate sets 23 and 33 includes three disc-shaped friction plates and four disc-shaped steel plates. The first outer hub 21 and the first inner hub 22 are respectively connected to two radial sides of the first friction plate group 23, and the second outer hub 31 and the second inner hub 32 are respectively connected to two radial sides of the second friction plate group 33, and are all connected through a spline. The first outer hub 21, the first inner hub 22, the second outer hub 31 and the second inner hub 32 are opened with a third oil hole 211, a fourth oil hole 221, a fifth oil hole 313 and a sixth oil hole 321, which are communicated with each other, respectively. The third to sixth oil holes 211 to 321 are arranged radially from the outside to the inside. Specifically, the cooling oil passes through the third limiting device 70, and due to the radially outward plum blossom, enters the second friction plate group 33 from the sixth oil hole 321, cools the second friction plate group 33, flows out of the fifth oil hole 313, enters the first friction plate group 23 from the fourth oil hole 221, is discharged from the third oil hole 211 after cooling the first friction plate group 23, and can achieve a good cooling and heat dissipation effect, and the heat resistance of the clutch is effectively improved.
The second balance piston 38 is provided with a seventh oil hole 381 close to the main hub 10, the seventh oil hole 381 communicates the second balance cavity 35 and the sixth oil hole 321, and excess balance oil in the second balance cavity 35 can flow to the sixth oil hole 321 through the seventh oil hole 381, then sequentially pass through the second friction plate group 33, the fifth oil hole 313, the fourth oil hole 221, the first friction plate group 23, and finally be discharged from the third oil hole 211.
Preferably, the first balance piston 28 is in interference fit with the first piston 24 through a sealing member, the second balance piston 38 is in interference fit with the second piston 34 through a sealing member, the first piston 24 is in interference fit with the first outer hub 21 and the second outer hub 31 through a sealing member, in this embodiment, the first piston 24, the first balance piston 28 and the second balance piston 38 are made of metal, and the sealing members are made of rubber attached to a metal framework through a vulcanization process. A first sealing ring 80 is arranged between the second piston 34 and the second outer hub 31, a second sealing ring 90 is arranged between the second piston 34 and the main hub 10, the second piston 34 is in interference fit with the second outer hub 31 through the first sealing ring 80, the second piston 34 is in interference fit with the main hub 10 through the second sealing ring 90, and the joints of the components can be sealed through the interference fit, so that the sealing performance of each pressure cavity and each balance cavity is ensured. In other embodiments, the second seal 90 may be replaced by rubber vulcanization of the surface of the second piston 34. The main hub 10 is provided with a third clamp spring 14, and the main hub 10 is connected to the second balance piston 38 through the third clamp spring 14.
In order to achieve the same purpose, the invention further provides a vehicle, which has the wet double clutch in the technical scheme, so that the vehicle also has all the technical effects of the wet double clutch, and the details are not repeated herein.
It should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected" and "connected" in the description of the invention are to be construed broadly and may for example be fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
In summary, the wet-type dual clutch of the invention comprises a main hub, a first clutch and a second clutch, wherein the first clutch and the second clutch are sleeved on the main hub, the first clutch comprises a first outer hub, a first inner hub, a first friction plate set and a first piston, the second clutch comprises a second outer hub, a second inner hub, a second friction plate set and a second piston, a first balance cavity is formed between the first piston and the second outer hub, a second balance cavity is formed between the second piston and the main hub, the first balance cavity and the second balance cavity are communicated with each other and are arranged in a radial direction, so that the problem that oil ducts are required to be respectively arranged on the main hub for the first balance cavity and the second balance cavity is avoided, the processing difficulty and the processing cost are reduced, the axial length of the main hub is reduced, the structure of the dual clutch is more compact, the occupied space is smaller, and the arrangement of the dual clutch in the radial direction is more uniform, the arrangement of the transmission assembly is more facilitated. In addition, through increasing first elastic component and second elastic component, can improve the precision of looking for clutch half joint, improve the ride comfort, promote transmission efficiency, have higher popularization and application and worth.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. A wet dual clutch, comprising:
the clutch comprises a main hub, a first clutch and a second clutch, wherein the first clutch and the second clutch are sleeved on the main hub;
the first clutch comprises a first outer hub fixedly connected with the main hub, a first inner hub, a first friction plate set and a first piston capable of moving along the axial direction to press or release the first friction plate set;
the second clutch comprises a second outer hub, a second inner hub, a second friction plate set and a second piston, wherein the second outer hub is fixedly connected with the main hub and arranged on the inner side of the first outer hub, and the second piston can axially move to press or release the second friction plate set;
the first piston is axially slidably connected between the first outer hub and the second outer hub, and the second piston is axially slidably connected between the second outer hub and the main hub;
a first balance piston is connected between the first piston and the second outer hub, and a second balance piston is connected between the second piston and the main hub;
a first balance cavity is formed among the first piston, the second outer hub and the first balance piston, a second balance cavity is formed among the second piston, the main hub and the second balance piston, the first balance cavity and the second balance cavity are communicated with each other and are radially arranged, a first oil duct is formed in the main hub, and the first oil duct is communicated with the first balance cavity or the second balance cavity;
and a first oil hole is formed in the second outer hub, a second oil hole is formed in the second piston, and the first balance cavity is communicated with the second balance cavity through the first oil hole and the second oil hole.
2. A wet dual clutch according to claim 1, wherein the first set of friction plates is provided with a first resilient member connected to the first outer hub at an end facing the first piston, and the second set of friction plates is provided with a second resilient member connected to the second outer hub at an end facing the second piston.
3. A wet double clutch according to claim 1, characterized in that a first pressure chamber is formed between the first outer hub, the first piston and the second outer hub, a second pressure chamber is formed between the second outer hub, the second piston and the main hub, the first pressure chamber and the second pressure chamber being distributed in a radial direction;
and the main hub is provided with a second oil duct communicated with the first pressure cavity and a third oil duct communicated with the second pressure cavity.
4. Wet dual clutch according to claim 2,
a third elastic piece used for providing restoring elastic force for promoting the first piston to be away from the first friction plate set is connected between the first balance piston and the first piston, and a fourth elastic piece used for providing restoring elastic force for promoting the second piston to be away from the second friction plate set is connected between the second balance piston and the second piston.
5. The wet dual clutch according to claim 4, wherein the first and second elastic members are both wave springs, and the third and fourth elastic members are both axially disposed helical springs.
6. Wet dual clutch according to one of the claims 1 to 5, characterized in that the wet dual clutch further comprises a driving disc connected to the first outer hub;
a first clamp spring is arranged between the driving disc and the first outer hub, a second clamp spring is arranged between the second friction plate group and the second outer hub, and the driving disc is connected with the first outer hub through a spline and the first clamp spring;
a first limiting device is arranged between the driving disc and the first inner hub, a second limiting device is arranged between the first inner hub and the second inner hub, and a third limiting device is arranged between the second inner hub and the main hub.
7. The wet dual clutch as claimed in claim 4, wherein the first set of friction plates and the second set of friction plates are disposed radially;
the first outer hub and the first inner hub are respectively connected to two radial sides of the first friction plate group, the second outer hub and the second inner hub are respectively connected to two radial sides of the second friction plate group, and a third oil hole, a fourth oil hole, a fifth oil hole and a sixth oil hole which are communicated with each other are respectively formed in the first outer hub, the first inner hub, the second outer hub and the second inner hub;
and a seventh oil hole is formed in the position, close to the main hub, of the second balance piston, and the seventh oil hole is communicated with the second balance cavity and the sixth oil hole.
8. The wet dual clutch of claim 4, wherein the first balance piston is in interference fit with the first piston through a seal, the second balance piston is in interference fit with the second piston through a seal, and the first piston is in interference fit with the first and second outer hubs through a seal;
a first sealing ring is arranged between the second piston and the second outer hub, a second sealing ring is arranged between the second piston and the main hub, the second piston is in interference fit with the second outer hub through the first sealing ring, and the second piston is in interference fit with the main hub through the second sealing ring;
and the main hub is provided with a third clamp spring and is connected with the second balance piston through the third clamp spring.
9. A vehicle characterized by comprising a wet double clutch as claimed in any one of claims 1 to 8.
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| CN201910841396.5A CN112443590B (en) | 2019-09-05 | 2019-09-05 | Vehicle and wet-type double clutch |
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| CN201910841396.5A CN112443590B (en) | 2019-09-05 | 2019-09-05 | Vehicle and wet-type double clutch |
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| CN113048160A (en) * | 2021-03-17 | 2021-06-29 | 重庆青山工业有限责任公司 | Wet-type double clutch structure |
| DE102021203150B3 (en) * | 2021-03-29 | 2022-09-01 | Magna Pt B.V. & Co. Kg | multiple clutch assembly |
| CN113027939B (en) * | 2021-04-14 | 2024-05-14 | 博格华纳联合传动系统有限公司 | Integrated sequential double-clutch and shock absorber integrated device with compact modularized design |
| CN113374802B (en) * | 2021-06-25 | 2023-01-24 | 盛瑞传动股份有限公司 | Separation spring connecting structure, transmission with separation spring connecting structure and assembly method |
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