CN112303141A - Clutch cover assembly and clutch - Google Patents
Clutch cover assembly and clutch Download PDFInfo
- Publication number
- CN112303141A CN112303141A CN201910700432.6A CN201910700432A CN112303141A CN 112303141 A CN112303141 A CN 112303141A CN 201910700432 A CN201910700432 A CN 201910700432A CN 112303141 A CN112303141 A CN 112303141A
- Authority
- CN
- China
- Prior art keywords
- clutch cover
- cover assembly
- drive
- clutch
- pressure plate
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims description 30
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
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
- F16D13/58—Details
-
- 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
- F16D13/58—Details
- F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
Abstract
The invention relates to a clutch cover assembly and a clutch. The clutch cover assembly includes: a clutch cover (1) that can rotate in a certain rotational direction when the motor vehicle is driven by a drive device to travel; a pressure plate (2) which is arranged coaxially with the clutch cover and can rotate together with the clutch cover; a spring element which is located between the clutch cover and the pressure plate, the pressure plate being axially displaceable relative to the clutch cover by means of the spring element; a first drive plate (3) arranged in a tangential direction, the first drive plate being fixed to the clutch cover at a front end in the rotational direction and to the pressure plate at a rear end in the rotational direction; a second drive strap (4) arranged in a tangential direction, the second drive strap being fixed to the pressure plate at a front end in the rotational direction and to the clutch cover at a rear end in the rotational direction; the first drive strap and the second drive strap are arranged radially offset from one another. The clutch includes the above clutch cover assembly.
Description
Technical Field
The invention relates to the technical field of clutches. The present invention particularly relates to a clutch cover assembly and a clutch including the same.
Background
In a friction clutch for a motor vehicle, a clutch cover, a pressure plate, and a main spring element are generally included. The clutch cover has an axis and is fixable to a drive plate rotatable in a predetermined rotational direction. The pressure plate is connected to the clutch cover and rotates together with the clutch cover about a common axis, the pressure plate being further capable of limited axial movement relative to the clutch cover. The main spring element is supported axially at one end on the clutch cover and at the other end on the pressure plate in order to be able to urge the pressure plate towards the clutch disk. The clutch cover and the pressure plate are connected by a plurality of webs designed as leaf spring assemblies and transmit torque by means of the webs. The web is generally arranged in such a way that the web is essentially tangential in its longitudinal direction to a common axis relative to the clutch cover and the pressure plate. In general, in the design of a friction clutch of the type described above, the front ends of all the coupling webs in the rotational direction are fixed to the clutch cover and the rear ends of all the coupling webs in the rotational direction are fixed to the pressure plate. This corresponds to the knowledge that the motor vehicle is driven by a drive device, for example an internal combustion engine, under normal conditions and the leaf spring assembly should be stretched under normal operating conditions.
A large number of embodiments of the connecting webs designed as leaf springs are known. For example, DE 102017108239 a1 discloses a clutch for a motor vehicle, which comprises a pressure plate and a clutch cover, to which leaf spring elements are respectively fastened, wherein the leaf spring elements are connected on one side by rivets and the leaf spring elements have a support section, by means of whose edge matching the pressure plate or the clutch cover they can surround in order to hold the rivets. A torque transmission device is also known, for example, from DE 102008061588B 4, which comprises two parts which are connected by means of a web designed as a leaf spring, wherein the web has a through-hole which is penetrated by a connecting piece at each end and a disk-spring-type adjustment region which surrounds the through-hole.
However, during operation of the friction clutch, the impact due to resonance and/or shock may cause damage to the leaf spring, such as buckling or kinking of the leaf spring due to insufficient bending strength, etc.
In the solutions that exist today, it is often necessary to use leaf springs with a high safety factor in terms of maximum engine torque and impact torque. This may in some cases result in a great loss of the leaf spring and/or the clutch in other properties.
Disclosure of Invention
The object of the present invention is therefore to provide a clutch or clutch cover assembly which has a good combination of properties, in particular an improved impact resistance.
The above technical problem is solved by a clutch cover assembly. The clutch cover assembly is used for a motor vehicle with a driving device. The clutch cover assembly mainly includes: the clutch cover can be rotated in a defined direction of rotation when the motor vehicle is driven by a drive device, the pressure plate is arranged coaxially with the clutch cover and can rotate together with the clutch cover, and a spring element, which is held, for example, in the clutch cover and by means of which the pressure plate can be moved axially relative to the clutch cover, is located between the clutch cover and the pressure plate.
According to an aspect of the present invention, the clutch cover assembly further includes a first transmitting plate arranged substantially in a tangential direction and a second transmitting plate arranged substantially in the tangential direction, wherein the first transmitting plate is fixed to the clutch cover at a front end in the above-mentioned rotational direction and fixed to the pressure plate at a rear end in the above-mentioned rotational direction, and the second transmitting plate is fixed to the pressure plate at a front end in the above-mentioned rotational direction and fixed to the clutch cover at a rear end in the above-mentioned rotational direction, wherein the first transmitting plate and the second transmitting plate are arranged offset from each other in a radial direction.
The clutch cover can be driven by a drive of the motor vehicle. The drive device may be an internal combustion engine and/or an electric machine. For example, the clutch cover may be coupled to a mass flywheel driven by the internal combustion engine. For another example, the clutch cover may be connected to a member driven by a motor. Depending on the position of the clutch cover in the drive train of the motor vehicle and the connection, it can be determined that the clutch cover rotates in a certain rotational direction when the motor vehicle is driven by the drive device.
The spring element, as the main element for the axial displacement of the pressure plate relative to the clutch cover, preferably rests on the pressure plate at one end and on the clutch cover at the other end, so that the actuating lever is formed. By means of the spring element in cooperation with an actuator in the clutch system, the pressure plate can be switched axially between an engaged position, in which it presses against the clutch disk, and a disengaged position, in which it is disengaged from the clutch disk, in order to effect engagement and disengagement of the clutch.
The drive strap can be designed as a leaf spring. In particular, the transmission plate may be a single-piece leaf spring, or the transmission plate may be a leaf spring assembly formed by arranging at least two single-piece leaf springs one above the other. Since the drive strap has an elasticity in the axial direction, in particular after assembly, it is ensured that torque can always be transmitted between the clutch cover and the pressure plate. In addition, the drive strap can also serve as an auxiliary element for the axial displacement of the pressure plate.
In one embodiment of the invention, two types of webs, namely a first web and a second web, are provided in the clutch cover assembly, which webs are arranged offset from one another in the radial direction. Each of the drive straps has two ends in the respective longitudinal direction, a drive end connected to the drive member in the clutch cover and the pressure plate and a driven end connected to the driven member in the clutch cover and the pressure plate. When the transmission piece rotates along with the clutch cover and the pressure plate around a common axis, if the driving end of the transmission piece is positioned in front of the rotating direction and the driven end of the transmission piece is positioned behind the rotating direction, the transmission piece is in a stretching state; if the drive end of the drive strap is rearward in the direction of rotation and the driven end of the drive strap is forward in the direction of rotation, the drive strap is in a stressed state. By the above-described opposite arrangement of the first and second drive webs, one of the first and second drive webs can always be in tension and serve as the primary power-transmitting element in the current rotational direction when the clutch cover and pressure plate are rotated in either direction. Thus, by the coordinated action of the two types of drive straps, each drive strap is less prone to buckling or kinking even under resonance and/or impact conditions. So that no special elements have to be used in the design of the clutch to prevent buckling or kinking of the webs, resulting in a loss of other functional aspects of the clutch.
In a preferred embodiment, the clutch cover assembly comprises two or more first drive plates and two or more second drive plates, wherein the first drive plates are evenly distributed in the circumferential direction and the second drive plates are evenly distributed in the circumferential direction. Thus, torque can be stably and uniformly transmitted between the clutch cover and the pressure plate. In addition, the drive strap can also serve as a centering element for the pressure plate.
In a preferred embodiment, the first drive strap is arranged radially outside the clutch cover assembly and the second drive strap is arranged radially inside the clutch cover assembly. When the motor vehicle is driven by the drive unit, the radially outer first connecting web is in the desired stretched state. In the case of normal driving of a motor vehicle, this design is advantageous with regard to the transmission efficiency and the service life of the components, in particular of the fastening elements of the first connecting webs and the connecting webs.
In an alternative embodiment, the first drive strap is arranged radially inward of the clutch cover assembly and the second drive strap is arranged radially outward of the clutch cover assembly.
In an advantageous embodiment, the radially outwardly arranged transmission webs are connected, for example riveted, to the clutch cover and the pressure plate, respectively, so that a simple and reliable holding is achieved.
In an advantageous embodiment, the radially inwardly arranged driver webs are each connected to the clutch cover by means of bolts or pins, so that a simple and reliable holding is achieved.
In this case, the spring element is advantageously fastened to the clutch cover by means of bolts or pins. The spring element and the driver blade arranged radially inside can thus be fixed to the clutch cover by means of a common fastening element, so that a space-saving holding of the driver blade can be achieved with the existing structure for holding the spring element.
In this case, the pressure plate is advantageously formed with lug portions extending toward the radial inner side, the drive webs arranged on the radial inner side being connected, for example riveted, to the respective lug portions. The radially inner drive strap can thereby be arranged in the space radially inside the pressure plate and the clutch cover, so that the axial dimension of the clutch cover assembly is not increased.
In a preferred embodiment, the spring element is designed as a diaphragm spring.
The above technical problem is also solved by a clutch including the above clutch cover assembly. Here, the clutch can be used as a dry clutch, for example. The clutches can be designed, for example, as one or both of the dual clutches.
In summary, through the above-mentioned opposite arrangement of the first transmission piece and the second transmission piece, the transmission pieces are not easy to buckle or kink even under resonance and/or impact conditions, and meanwhile, due to the opposite arrangement of the first transmission piece and the second transmission piece, when the first transmission piece/the second transmission piece is severely impacted, the second transmission piece/the first transmission piece which are oppositely arranged can play a certain protection role, so that the impact resistance of the clutch is enhanced. So that no special elements have to be used in the design of the clutch to prevent buckling or kinking of the webs, resulting in a loss of other functional aspects of the clutch. In addition, due to the arrangement of the first drive strap and the second drive strap in a radially spaced manner, the space of the pressure plate and the clutch cover on the radial inner side can be fully utilized, and the clutch, particularly the clutch cover assembly, can maintain a small axial dimension.
Drawings
Preferred embodiments of the present invention are schematically illustrated in the following with reference to the accompanying drawings. The attached drawings are as follows:
figure 1 is a front view of a clutch cover assembly according to a preferred embodiment of the present invention,
fig. 2 is a partial perspective view of the clutch cover assembly according to fig. 1.
Detailed Description
Fig. 1 and 2 show a front view and a partial perspective view of a clutch cover assembly according to a preferred embodiment of the present invention, respectively. The clutch cover assembly is an integral part of a clutch for a motor vehicle. The clutch cover assembly mainly comprises a clutch cover 1, a pressure plate 2 and a spring element (not shown) between the clutch cover 1 and the pressure plate 2, which are coaxially arranged.
In the present embodiment, when the motor vehicle is driven by a drive device such as an internal combustion engine, the clutch cover 1 rotates the pressure plate 2 together, for example, in the direction indicated by the arrow in fig. 1.
The pressure plate 2 can be moved axially relative to the clutch cover 1 by means of spring elements, not shown, and a clutch actuator, also not shown, in order to engage and disengage the clutch.
The spring element can be designed as a conventional diaphragm spring, which for example comprises an annular section and separating fingers extending from the annular section substantially radially towards the inside. The radially outer end of the diaphragm spring, i.e. the peripheral portion of the annular section, which is able to be actuated by the clutch actuator, i.e. the finger end of the release finger, abuts against the pressure plate 2, and the diaphragm spring is held in its annular section on the clutch cover 1, for example by means of bolts 7, so that the diaphragm spring forms an actuating lever which is able to actuate the pressure plate 2. At the fulcrum of the diaphragm spring, i.e. at the bolt 7, support rings may be provided on both axial sides of the diaphragm spring.
As shown in fig. 1, the clutch cover assembly also includes two sets of tangentially-disposed drive plates, a first set of drive plates and a second set of drive plates. In the present embodiment, the first group of drive plates includes three first drive plates 3 arranged uniformly in the circumferential direction, and the second group of drive plates also includes three second drive plates 4 arranged uniformly in the circumferential direction.
As can be seen from fig. 1 and 2, each first drive plate 3 is fixed to the clutch cover 1 by caulking at the front end in the rotational direction indicated by the arrow. Each first transmission plate 3 is fixed to the pressure plate 2 by caulking at the rear end in the rotational direction as indicated by the arrow. As shown in fig. 2 in particular, each second drive strap 4 is fixed by riveting to a radially inwardly extending lug portion 5 of the pressure plate 2 at the forward end in the rotational direction indicated by the arrow. Each second transmission strap 4 is fixed to the clutch cover 1 at the rear end in the rotational direction indicated by the arrow by the aforementioned bolt 7 for holding the diaphragm spring. Thus, all the second transmission plates 4 are arranged radially inside the clutch cover 1 and the pressure plate 2, and the clutch cover assembly can maintain a small axial dimension. Through the reverse arrangement of the first transmission piece 3 and the second transmission piece 4, the transmission pieces can resist resonance and/or impact cooperatively, so that buckling or kinking is not easy to occur, and the impact resistance of the clutch is enhanced integrally.
Although possible embodiments have been described by way of example in the above description, it should be understood that numerous embodiment variations exist, still by way of combination of all technical features and embodiments that are known and that are obvious to a person skilled in the art. It should also be appreciated that the exemplary embodiment or exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration of the invention in any way. From the foregoing description, one of ordinary skill in the art will more particularly provide a technical guide to convert at least one exemplary embodiment, wherein various changes may be made, particularly in matters of function and structure of the components described, without departing from the scope of the following claims.
List of reference numerals
1 Clutch cover
2 pressure plate
3 first driving plate
4 second driving strap
5 lug part of pressure plate
6 rivet
7 bolt
8 rivet
Claims (10)
1. A clutch cover assembly for a motor vehicle having a drive apparatus, the clutch cover assembly comprising:
-a clutch cover (1) rotatable in a determined direction of rotation when the motor vehicle is driven by the drive device to travel;
-a pressure plate (2) arranged coaxially with the clutch cover (1) and rotatable jointly with the clutch cover (1);
-a spring element between the clutch cover (1) and the pressure plate (2), wherein the pressure plate (2) is axially displaceable relative to the clutch cover (1) by means of the spring element;
characterized in that the clutch cover assembly further comprises:
a first tangentially arranged drive plate (3), the first drive plate (3) being fixed to the clutch cover (1) at a front end in the direction of rotation and to the pressure plate (2) at a rear end in the direction of rotation;
a second transmission strap (4) arranged in a tangential direction, the second transmission strap (4) being fixed to the pressure plate (2) at a front end in the rotational direction and to the clutch cover (1) at a rear end in the rotational direction;
wherein the first drive strap (3) and the second drive strap (4) are arranged radially offset from one another.
2. A clutch device according to claim 1, characterised in that the clutch cover assembly comprises two or more first transmission plates (3) and two or more second transmission plates (4), wherein the first transmission plates (3) are evenly distributed in the circumferential direction and the second transmission plates (4) are evenly distributed in the circumferential direction.
3. Clutch cover assembly according to claim 1, characterized in that the first drive strap (3) is arranged radially outside the clutch cover assembly and the second drive strap (4) is arranged radially inside the clutch cover assembly.
4. The clutch cover assembly of claim 1, wherein the first drive strap is disposed radially inward of the clutch cover assembly and the second drive strap is disposed radially outward of the clutch cover assembly.
5. Clutch cover assembly according to claim 3 or 4, wherein the drive straps (3) arranged radially outside are connected with the clutch cover (1) and the pressure plate (2), respectively.
6. Clutch cover assembly according to claim 3 or 4, wherein the driver blade (4) arranged radially inside is connected to the clutch cover (1) by means of a bolt (7) or pin, respectively.
7. Clutch cover assembly according to claim 6, wherein the spring element is fixed to the clutch cover (1) by means of the bolt (7) or the pin.
8. Clutch cover assembly according to claim 3 or 4, wherein the pressure plate (2) is configured with lug parts (5) extending towards the radial inner side, the drive straps (4) arranged at the radial inner side being connected with the respective lug parts (5), respectively.
9. The clutch cover assembly of claim 1, wherein the spring element is configured as a diaphragm spring.
10. A clutch, characterized in that it comprises a clutch cover assembly according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910700432.6A CN112303141A (en) | 2019-07-31 | 2019-07-31 | Clutch cover assembly and clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910700432.6A CN112303141A (en) | 2019-07-31 | 2019-07-31 | Clutch cover assembly and clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112303141A true CN112303141A (en) | 2021-02-02 |
Family
ID=74486079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910700432.6A Pending CN112303141A (en) | 2019-07-31 | 2019-07-31 | Clutch cover assembly and clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112303141A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES269403A1 (en) * | 1960-08-02 | 1961-11-16 | Franaaise Du Ferodo Sa | Improvements in or relating to friction clutches |
| GB1311637A (en) * | 1970-10-04 | 1973-03-28 | Aisin Seiki | Diaphragm clutch assembly |
| US6305520B1 (en) * | 1999-05-31 | 2001-10-23 | Luk Lamellon Und Kupplungsbau Gmbh | Friction clutch |
| EP1657463A1 (en) * | 2004-11-12 | 2006-05-17 | Aisin Seiki Kabushiki Kaisha | Clutch adjustment apparatus |
| CN104930119A (en) * | 2014-03-18 | 2015-09-23 | 舍弗勒技术股份两合公司 | Flywheel, clutch and flywheel clutch assembling body |
| CN204755643U (en) * | 2015-03-25 | 2015-11-11 | 湖北三环离合器有限公司 | Clutch case and pressure disk assembly |
| CN106133360A (en) * | 2014-03-27 | 2016-11-16 | 舍弗勒技术股份两合公司 | Multidisk clutch |
| CN208153575U (en) * | 2018-04-18 | 2018-11-27 | 浙江奥德华汽配有限公司 | A kind of clutch compressing disc and cap assembly |
| DE102017119106A1 (en) * | 2017-08-22 | 2019-02-28 | Schaeffler Technologies AG & Co. KG | Friction clutch for a motor vehicle |
| DE102017126799A1 (en) * | 2017-11-15 | 2019-05-16 | Schaeffler Technologies AG & Co. KG | Self-energizing friction clutch with leaf springs |
-
2019
- 2019-07-31 CN CN201910700432.6A patent/CN112303141A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES269403A1 (en) * | 1960-08-02 | 1961-11-16 | Franaaise Du Ferodo Sa | Improvements in or relating to friction clutches |
| GB1311637A (en) * | 1970-10-04 | 1973-03-28 | Aisin Seiki | Diaphragm clutch assembly |
| US6305520B1 (en) * | 1999-05-31 | 2001-10-23 | Luk Lamellon Und Kupplungsbau Gmbh | Friction clutch |
| EP1657463A1 (en) * | 2004-11-12 | 2006-05-17 | Aisin Seiki Kabushiki Kaisha | Clutch adjustment apparatus |
| CN104930119A (en) * | 2014-03-18 | 2015-09-23 | 舍弗勒技术股份两合公司 | Flywheel, clutch and flywheel clutch assembling body |
| CN106133360A (en) * | 2014-03-27 | 2016-11-16 | 舍弗勒技术股份两合公司 | Multidisk clutch |
| CN204755643U (en) * | 2015-03-25 | 2015-11-11 | 湖北三环离合器有限公司 | Clutch case and pressure disk assembly |
| DE102017119106A1 (en) * | 2017-08-22 | 2019-02-28 | Schaeffler Technologies AG & Co. KG | Friction clutch for a motor vehicle |
| DE102017126799A1 (en) * | 2017-11-15 | 2019-05-16 | Schaeffler Technologies AG & Co. KG | Self-energizing friction clutch with leaf springs |
| CN208153575U (en) * | 2018-04-18 | 2018-11-27 | 浙江奥德华汽配有限公司 | A kind of clutch compressing disc and cap assembly |
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