CN107842562B - Wet multiplate clutch for a transmission - Google Patents
Wet multiplate clutch for a transmission Download PDFInfo
- Publication number
- CN107842562B CN107842562B CN201710902644.3A CN201710902644A CN107842562B CN 107842562 B CN107842562 B CN 107842562B CN 201710902644 A CN201710902644 A CN 201710902644A CN 107842562 B CN107842562 B CN 107842562B
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- CN
- China
- Prior art keywords
- shaft sleeve
- sleeve
- friction plates
- clutch
- wedge block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 17
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- F16D13/00—Friction clutches
- F16D13/22—Friction clutches with axially-movable clutching members
- F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
- F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
-
- 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
- F16D28/00—Electrically-actuated clutches
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention provides a novel wet multi-plate clutch for a transmission on a vehicle, and belongs to the technical field of transmissions. It has solved the structure of current driving mode and all had defect scheduling problem. The invention relates to a novel wet multi-plate clutch for an automobile transmission, which comprises a first shaft sleeve, a second shaft sleeve and a wet multi-plate clutch, wherein the first shaft sleeve, the second shaft sleeve and the wet multi-plate clutch can be in wedging connection, an inner friction plate of the wet multi-plate clutch is provided with an inner sleeve, the outer side of the inner sleeve is uniformly provided with engaging teeth, and an inner ring surface of the first shaft sleeve is provided with an engaging tooth ring surface which can be in engaging connection with the inner sleeve of the wet multi-plate clutch.
Description
Technical Field
The invention belongs to the technical field of clutches, and particularly relates to a novel multi-plate clutch for an automobile transmission.
Background
The multi-plate clutch is one of the most commonly used clutches for automatic transmissions of automobiles, and in order to transmit a certain torque, a certain force is required to press the friction plates when the clutches are combined so as to ensure that the clutches do not slip. If the pressure is too low, the friction plate may slip and fail. The common wet-type multi-plate clutch engagement pressure mechanism is hydraulic, motor or the like. The pressing force applied to the friction plate is usually about 5000N.
The structure using hydraulic force is characterized in that a hydraulic cavity piston, a piston return spring and other mechanisms are required to be designed in a clutch shell, an oil way is required to be arranged in the center of a gear shaft, the structure is complex, the parts are more, the processing precision is high, and the requirement on a sealing element is strict, so that the structure is one of the difficulties in the design of an automatic transmission. The hydraulic boosting is also required to be provided with an oil pump which can maintain certain pressure and flow, and certain power is required to be consumed.
If the motor is selected to apply force, a larger motor is needed to achieve the force of reliable joint connection of the multi-plate clutch, and the force bearing is easy to damage due to the larger axial force, so that the two structures have defects.
Disclosure of Invention
The invention aims to provide a multi-plate clutch for a transmission, which overcomes the defects, fully exerts the advantage of stable engagement of a wet multi-plate clutch, uses smaller torque to effectively engage the wet multi-plate clutch, adopts a motor drive and inclined wedge reinforcement structure, ensures that the reliable engagement of the clutch can be ensured even if smaller thrust is applied, and is beneficial to obtaining better torque transmission consistency of the multi-plate clutch, overcoming possible axial errors and shaking, improving the engagement stability of the clutch, saving energy consumption and reducing cost through the structural design optimization of an inner friction plate and an outer friction plate; .
The purpose of the invention is realized in the following way:
A wet multiplate clutch for a transmission, characterized by: the novel sliding type bearing comprises a first shaft sleeve and a second shaft sleeve which can be mutually wedged and connected, wherein the second shaft sleeve is sleeved on the first shaft sleeve, the outer ring surface of the first shaft sleeve and the inner ring surface of the second shaft sleeve are smooth cylindrical surfaces, and the first shaft sleeve and the second shaft sleeve can slide relatively; the clutch assembly comprises a first shaft sleeve, an inner sleeve, an outer ring surface of the first shaft sleeve, a plurality of inner friction plates, a plurality of outer friction plates, a motor, a clutch tooth surface, a plurality of inner friction plates and a clutch tooth surface, wherein the inner sleeve is provided with inner sleeve teeth; the structure that first axle sleeve and second axle sleeve can wedge the connection is wherein: the front side of the second shaft sleeve is provided with a plurality of grooves, the front side of the first shaft sleeve is provided with a plurality of wedge blocks in a corresponding way, and the first shaft sleeve is in wedging connection with the second shaft sleeve through the matched connection of the wedge blocks and the grooves; wherein the plurality of inner friction plates and/or the plurality of outer friction plates are flat plates or have concave-convex texture outlines in the circumferential direction; the clutch housing is sleeved on the outer sides of the inner friction plates and the outer friction plates, the clutch housing is provided with engagement tooth surfaces to be engaged with the outer annular surface engagement teeth of the multi-plate clutch engagement disc assembly 3, and the outer annular surface engagement teeth are fixedly connected with the outer friction plates.
Preferably, in the case where the plurality of inner friction plates and/or the plurality of outer friction plates have a concave-convex textured profile in the circumferential direction, at least three or more convex portions uniformly distributed in the circumferential direction and at least three or more corresponding numbers of concave portions are provided, the convex portions and the concave portions being alternately arranged in the circumferential direction; the highest point of the convex portion and the lowest point of the concave portion are axially spaced from 0 to 5mm.
Preferably, the wedge block is provided with an inclined contact surface at one circumferential end of the first shaft sleeve, the groove is provided with an inclined contact surface matched with the inclined contact surface of the wedge block, and when the inclined contact surface of the wedge block and the inclined contact surface of the groove are in contact extrusion, opposite axial force is generated between the wedge block and the groove, and the second shaft sleeve is pushed by the axial force to axially move relative to the first shaft sleeve due to the axial fixation of the first shaft sleeve.
Preferably, the wedge is a right-angle trapezoid, and the groove is a right-angle trapezoid groove matched with the wedge in shape.
Preferably, the first shaft sleeve is of a structure with an I-shaped cross section and comprises an outer ring body and an inner ring body, the outer ring body and the inner ring body are connected through a middle annular body to form the first shaft sleeve of the I-shaped structure, one end of the outer ring body is convexly provided with the wedge block, and the inner ring surface of the inner ring body is provided with a meshing tooth ring surface.
Compared with the prior art, the invention has the following outstanding and beneficial technical effects:
1. Compared with the traditional wet multi-plate clutch hydraulic force application system, the hydraulic force application system is simple in structure and reliable in operation.
2. According to the clutch, axial reinforcement is generated through the wedging action of the second sleeve in the clutch, so that the clutch can be better engaged by superposing the driving moment of the motor, reliable engagement of the clutch is achieved, and the energy-saving effect is good; meanwhile, compared with the traditional large-torque motor, the motor with smaller motor can be properly selected, the cost and the structural arrangement volume are saved, the reliable engagement of the clutch is achieved, the energy-saving effect is good, and the weight is light.
3. The structural design of the inner friction plate and the outer friction plate, such as adopting the concave-convex texture profile, is favorable for obtaining better torque transmission consistency of the multi-plate clutch, avoiding any axial shaking possibly existing, compensating axial errors and improving the stability of clutch engagement.
4. The invention has no hydraulic system sealing requirement, less parts and low manufacturing cost.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Detailed Description
The invention is further described in the following examples with reference to the accompanying drawings: with reference to figures 1-2 of the drawings,
The novel wet multi-plate clutch for the automobile transmission comprises a first shaft sleeve 1 and a second shaft sleeve 2 which can be wedged and connected, and further comprises a wet multi-plate clutch engagement disc assembly 3 and a clutch housing 9, wherein the wet multi-plate clutch engagement disc assembly 3 is provided with an inner sleeve 4, meshing teeth are uniformly distributed on the outer ring surface of the inner sleeve 4, a meshing tooth ring surface 5 which can be meshed and connected with the meshing teeth of the inner sleeve 4 of the wet multi-plate clutch engagement disc assembly 3 is arranged on the inner ring surface of the first shaft sleeve 1, meshing teeth are uniformly distributed on the inner ring surface of the wet multi-plate clutch engagement disc assembly 3, the wet multi-plate clutch engagement disc assembly 33 comprises a plurality of inner friction plates and a plurality of outer friction plates, the inner friction plates and the outer friction plates are alternately arranged, and the meshing teeth of the inner ring surface of the engagement disc assembly 3 are fixedly connected with the inner friction plates.
The outer ring surface of the second sleeve 2 is uniformly provided with an engagement tooth surface 6 which can be engaged with the inner ring surface engagement tooth of the wet multi-plate clutch engagement disc assembly 3.
In the power transmission process, when the wet multi-plate clutch is connected, the motor drives the second sleeve 2 to axially move, when the inner friction plate and the outer friction plate are in a semi-clutch state, the inner friction plate starts to rotate due to the driving of the outer friction plate, the inner friction plate drives the second sleeve 2 to rotate again, so that the second sleeve 2 is wedged and connected with the first sleeve 1 to generate axial reinforcement, and at the moment, the axial reinforcement is superposed with the driving force of the motor to drive the second sleeve 2 to continue to axially move to finally complete connection of the inner friction plate and the outer friction plate, so that power transmission is realized.
The clutch housing 9 is sleeved on the outer sides of the inner friction plates and the outer friction plates, the clutch housing 9 is provided with an engagement tooth surface to be engaged with the outer annular surface engagement tooth of the wet multi-plate clutch engagement disc assembly 3, and the outer annular surface engagement tooth is fixedly connected with the outer friction plates.
The second shaft sleeve 2 is sleeved on the first shaft sleeve 1, the outer ring surface of the first shaft sleeve 1 and the inner ring surface of the second shaft sleeve 2 are smooth cylindrical surfaces, and the first shaft sleeve 1 and the second shaft sleeve 2 can slide relatively.
The structure that the first shaft sleeve 1 and the second shaft sleeve 2 can be wedged and connected is as follows: the front side of the second shaft sleeve 2 is provided with a plurality of grooves 7, preferably 3 grooves, the front side of the first shaft sleeve 1 is provided with a plurality of wedges 8 in a corresponding and protruding mode, and the first shaft sleeve 1 is wedged and connected with the second shaft sleeve 2 through the matched connection of the wedges 8 and the grooves 7.
The wedge block 8 is provided with an inclined contact surface at one circumferential end of the first shaft sleeve 1, the groove 7 is provided with an inclined contact surface 11 matched with the inclined contact surface of the wedge block 8, and when the inclined contact surface (inclined surface) of the wedge block and the inclined contact surface 11 (inclined surface) of the groove are in contact extrusion, opposite axial force is generated between the wedge block 8 and the groove 7, and the second shaft sleeve 2 is pushed by the axial force to move away from the first shaft sleeve axially due to the axial fixation of the first shaft sleeve 1.
The wedge block 8 is a right-angle trapezoid body, and the groove 7 is a matched right-angle trapezoid groove with a similar shape corresponding to the wedge block 8.
The first shaft sleeve 1 is of a structure with an I-shaped cross section and comprises an outer ring body and an inner ring body, the outer ring body and the inner ring body are connected through a middle annular body to form the first shaft sleeve 1 of the I-shaped structure, one end of the outer ring body is convexly provided with the wedge block 8, and the inner ring surface of the inner ring body is provided with a meshing tooth ring surface 5.
The inner sleeve 4 is fixedly connected with the inner end pressure plates 10 of the plurality of inner friction plates, and after the working bearing presses the second sleeve 2, the second sleeve 2 pushes the plurality of inner friction plates to move axially from the outer ends to the inner ends of the plurality of inner friction plates, and presses the inner end pressure plates 10, so that the clutch is gradually combined.
The working process of the invention comprises the following steps: when the clutch is required to be engaged, the working bearing applies an axial force to the second sleeve 2 to enable the second sleeve 2 to axially move, so that the inner friction plate and the outer friction plate are in a semi-clutch engagement state, the inner friction plate rotates to drive the second sleeve 2 to rotate, relative slip is generated between the second sleeve 2 and the first sleeve 1, the axial compression force is increased through the wedge, the second sleeve 2 is further boosted, and complete engagement of the inner friction plate and the outer friction plate is completed.
During the clutch release process, the working bearing moves reversely, no force is applied, the driving force is reduced, after that, when the rotating speed of the first shaft sleeve 1 is larger than that of the second shaft sleeve 2, the inclined wedge of the first shaft sleeve 1 does not apply force to the inclined surface of the groove 7 of the second shaft sleeve 2, the inclined surface of the groove of the second shaft sleeve 2 is not applied with force, so that the second shaft sleeve 2 slides to restore to the original position, and the inner friction plate and the outer friction plate are automatically separated.
The inner friction plates and/or the outer friction plates are made of steel plates or nylon plates or other materials, and the inner friction plates and the outer friction plates can be compressed in the axial direction to realize friction joint.
The inner friction plates and/or the outer friction plates are flat or have a concave-convex textured profile in the circumferential direction, preferably designed such that they are elastically deformable or elastic in the circumferential direction. In the case where the friction plate has a concave-convex textured profile in the circumferential direction, at least three or more convex portions uniformly distributed in the circumferential direction and at least three or more corresponding numbers of concave portions are provided, the convex portions and concave portions being alternately arranged in the circumferential direction, preferably four to eight pairs. Preferably the concave-convex textured profile is a mathematical curve profile. The highest point of the convex part and the lowest point of the concave part are 0-5 mm, preferably 2mm along the axial distance, and the arrangement of the concave-convex texture profile is beneficial to obtaining better torque transmission consistency of the multi-plate clutch, avoiding any axial shaking which may exist, compensating axial errors and improving the stability of clutch engagement.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (3)
1. A wet multiplate clutch for a transmission, characterized by: the novel sliding type bearing comprises a first shaft sleeve and a second shaft sleeve which can be mutually wedged and connected, wherein the second shaft sleeve is sleeved on the first shaft sleeve, the outer ring surface of the first shaft sleeve and the inner ring surface of the second shaft sleeve are smooth cylindrical surfaces, and the first shaft sleeve and the second shaft sleeve can slide relatively; the clutch assembly comprises a first shaft sleeve, an inner sleeve, an outer ring surface of the first shaft sleeve, a plurality of inner friction plates, a plurality of outer friction plates, a motor, a clutch tooth surface, a plurality of inner friction plates and a clutch tooth surface, wherein the inner sleeve is provided with inner sleeve teeth; the structure that first axle sleeve and second axle sleeve can wedge the connection is wherein: the front side of the second shaft sleeve is provided with a plurality of grooves, the front side of the first shaft sleeve is provided with a plurality of wedge blocks in a corresponding way, and the first shaft sleeve is in wedging connection with the second shaft sleeve through the matched connection of the wedge blocks and the grooves; wherein the plurality of inner friction plates and/or the plurality of outer friction plates are flat plates or have concave-convex texture outlines in the circumferential direction; the clutch housing is sleeved on the outer sides of the inner friction plates and the outer friction plates and provided with engagement tooth surfaces for being engaged with the outer ring surface engagement teeth of the multi-plate clutch engagement disc assembly, and the outer ring surface engagement teeth are fixedly connected with the outer friction plates; providing at least three or more convex portions uniformly distributed in the circumferential direction and at least three or more corresponding numbers of concave portions, the convex portions and the concave portions being alternately arranged in the circumferential direction, in the case that the plurality of inner friction plates and/or the plurality of outer friction plates have a concave-convex textured profile in the circumferential direction; the highest point of the convex part and the lowest point of the concave part are 0-5 mm along the axial distance; the wedge block is provided with an inclined contact surface at one circumferential end of the first shaft sleeve, the groove is provided with an inclined contact surface matched with the inclined contact surface of the wedge block, and when the inclined contact surface of the wedge block is in contact extrusion with the inclined contact surface of the groove, opposite axial force is generated between the wedge block and the groove, and the second shaft sleeve is pushed by the axial force to axially move relative to the first shaft sleeve due to the axial fixation of the first shaft sleeve.
2. The multiplate clutch of claim 1, wherein: the wedge block is a right-angle trapezoid body, and the groove is a right-angle trapezoid groove matched with the wedge block in shape.
3. The multiplate clutch of claim 1, wherein: the first shaft sleeve is of a structure with an I-shaped cross section and comprises an outer ring body and an inner ring body, the outer ring body and the inner ring body are connected through a middle annular body to form the first shaft sleeve of the I-shaped structure, one end of the outer ring body is convexly provided with the wedge block, and the inner ring surface of the inner ring body is provided with a meshing tooth ring surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710902644.3A CN107842562B (en) | 2017-09-29 | 2017-09-29 | Wet multiplate clutch for a transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710902644.3A CN107842562B (en) | 2017-09-29 | 2017-09-29 | Wet multiplate clutch for a transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107842562A CN107842562A (en) | 2018-03-27 |
| CN107842562B true CN107842562B (en) | 2024-06-14 |
Family
ID=61662154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710902644.3A Active CN107842562B (en) | 2017-09-29 | 2017-09-29 | Wet multiplate clutch for a transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107842562B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207297669U (en) * | 2017-09-29 | 2018-05-01 | 浙江鑫可精密机械有限公司 | Clutch for the wet-type multi-disc of speed changer |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB199965A (en) * | 1922-07-20 | 1923-07-05 | Frank Winterbottom | An improvement in or relating to certain motor vehicles |
| GB455222A (en) * | 1935-04-12 | 1936-10-12 | Frank Croft | Driving clutches |
| DE102009007835B4 (en) * | 2009-02-06 | 2022-08-18 | Magna powertrain gmbh & co kg | torque transfer arrangement |
| CN103967964B (en) * | 2014-04-10 | 2016-02-17 | 龙口中宇机械有限公司 | A kind of power transmission engaging and disengaging gear |
| CN104196914B (en) * | 2014-09-24 | 2017-09-22 | 重庆齿轮箱有限责任公司 | A kind of wet clutch |
| CN205089855U (en) * | 2015-10-09 | 2016-03-16 | 龙口中宇热管理系统科技有限公司 | Two -stage multi -disc formula electromagnetic clutch |
-
2017
- 2017-09-29 CN CN201710902644.3A patent/CN107842562B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207297669U (en) * | 2017-09-29 | 2018-05-01 | 浙江鑫可精密机械有限公司 | Clutch for the wet-type multi-disc of speed changer |
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| Publication number | Publication date |
|---|---|
| CN107842562A (en) | 2018-03-27 |
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Effective date of registration: 20210701 Address after: No.176, Gaoxin East 1st Road, Tongxiang Economic Development Zone, Tongxiang City, Jiaxing City, Zhejiang Province, 314500 Applicant after: Zhejiang Xinke Transmission Technology Co.,Ltd. Address before: No. 150, xitaihe Road, Haimen street, Jiaojiang District, Taizhou City, Zhejiang Province Applicant before: ZHEJIANG SIEKON PRECISION MACHINERY Co.,Ltd. |
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