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WO2018091022A1 - Dispositif de transmission de couple - Google Patents

Dispositif de transmission de couple Download PDF

Info

Publication number
WO2018091022A1
WO2018091022A1 PCT/DE2017/100860 DE2017100860W WO2018091022A1 WO 2018091022 A1 WO2018091022 A1 WO 2018091022A1 DE 2017100860 W DE2017100860 W DE 2017100860W WO 2018091022 A1 WO2018091022 A1 WO 2018091022A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
pressure plate
connection
pressure
torque transmission
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.)
Ceased
Application number
PCT/DE2017/100860
Other languages
German (de)
English (en)
Inventor
Dirk Reimnitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to DE112017005870.8T priority Critical patent/DE112017005870A5/de
Publication of WO2018091022A1 publication Critical patent/WO2018091022A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • F16D25/086—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation the clutch being actuated by a push rod extending coaxially through the input or output shaft
    • 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
    • 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
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
    • 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
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • 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
    • 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
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
    • F16D2021/0607—Double clutch with torque input plate in-between the two clutches, i.e. having a central input plate
    • F16D2021/0615—Double clutch with torque input plate in-between the two clutches, i.e. having a central input plate the central input plate is supported by bearings in-between the two clutches

Definitions

  • the invention relates to a torque transmission device, comprising a pressure plate, which is arranged axially movable and can be connected to a component, and in which this component is associated with an actuating system for actuating the torque transmission device.
  • This torque transmission device can be designed as a friction clutch or as a friction brake.
  • a torque transmission device is understood as meaning a friction clutch or a friction brake.
  • a torque transfer device whose pressure plate, by means of one or more friction plates for switchable production of a frictional engagement between two rotating parts directly or indirectly against an axially fixed counter-plate to couple with an associated actuation system, certain connection devices are required.
  • these connecting devices are relatively expensive in construction and in the space requirement due to a mostly nested structure of two axially juxtaposed partial clutches and two coaxially superposed transmission input shafts for at least one of the pressure plates of one of the two partial clutches.
  • Such dual-clutch arrangements are known, for example, from US Pat
  • a dual clutch is used in the drive train of a motor vehicle, by means of a first partial clutch and a second partial clutch, a drive shaft of a drive motor, such as an internal combustion engine or an electric motor of a hybrid drive in an at least predominantly traction-free change with a first transmission input shaft of a first partial Component (28, 60) on two surfaces of the pressure plate (7, 53), which point in opposite directions, at least partially applied.
  • Torque transmission device according to any one of claims 1 to 3, characterized in that with the pressure plate (7, '53) to connecting member (28, 60) at least partially laterally in the circumferential direction of the connecting element (24, 46, 67, 74, 79) the pressure plate (7, 53) can be applied.
  • Torque transmission device characterized in that the connecting element (24, 46, 67, 74, 79) of the pressure plate (7, 53) or the connecting element (21, 43, 64, 71, 76) of the component ( 28, 60) has at least one radial undercut.
  • Torque transmission device characterized in that the connecting element (21, 43, 64, 71, 76) of the component (28, 60) formed in a directly adjacent to the pressure plate (7, 53) adjacent region at least partially circumferentially closed is.
  • Torque transmission device characterized in that a first pressure plate (7) is assigned to a first torque-transmitting device (1) designed as a double clutch and to a first component (28) designed as a tie rod. is connectable, said first component (28) radially engages over a second, gear-side partial coupling (6b) and an axially fixed first counter-plate (13), and in which for establishing the connection between the first pressure plate (7) and the first component (28 ) is arranged and / or formed:
  • a first connection element (24) on the pressure plate (7) which has a plurality of radially offset from the body of the pressure plate (7) and each with a first lateral bevel (39a) and a second lateral bevel (39b) and / or a tangential contact contour ( 84) has provided first connection extensions (38), exposed loads.
  • the characteristics of a friction clutch device can be improved if the diameter of the clutch plates is increased, since this increases the torque which can be transmitted with the same contact force. But also by the reduction of the clutch outer diameter, the coupling properties can be improved, as this reduces the moment of inertia of the friction clutch. This also applies analogously to friction brake devices. With the known connection techniques between a pressure plate and components of an actuating system, which must be connected to the pressure plate, however, a friction clutch device or a friction brake device can not be optimized in both directions.
  • the object of the invention was to propose a torque transmission device in the form of a friction clutch or friction brake with a pressure plate which permits a compact construction of the torque transmission device and / or improves its functional properties.
  • the radial installation space required for connecting the pressure plate to a component of an associated actuation system should be reduced compared to known technical solutions.
  • the invention was based on the finding that in a torque transmission device, in particular in a dual clutch with two axially juxtaposed partial clutches, the actuating systems are both arranged on the same side of the double clutch certain radial outer components, such as a tie rod or a pressure pot, on the one hand
  • this attachment unnecessarily increases the radial diameter of this torque transmission device or the available radial space for clutch disks or other friction surfaces. cheaply reduced.
  • This is the case, in particular, when the component and the pressure plate are riveted or screwed together via additional connecting elements or radially protruding projections, and these connecting elements are positioned radially over the coupling disks and / or the other friction surfaces.
  • Such fasteners can not radially as compact build as it can a connection device in which the component to be connected directly formed by means of suitably trained contours around formed on the pressure plate, formed to these geometrically complementary contours around or otherwise engaged and thereby secured.
  • the invention is therefore based on a torque transmission device, comprising a pressure plate, which is axially movable and can be connected to a component, and in which this component is associated with an actuating system for actuating the torque transmission device.
  • the invention provides that for connecting said component with the pressure plate on the component, a connecting element and on the pressure plate, a connection element is formed and / or attached, such that alone on the connecting element of the component and the connection element the pressure plate, the component and the pressure plate are firmly engageable with each other, so that alone by means of the connection between the component and the pressure plate between these two forces in both axial directions are transferable and / or ensured that the component and the pressure plate in the axial direction only together can move.
  • the directional indications "axial”, “radial”, “tangential” and “circumferential direction” refer to a rotational axis of the torque transmission device. If the following description of further developments and advantages as well as exemplary embodiments uses numerical terms such as “first”, “second”, “third”, etc., this only serves to distinguish different exemplary embodiments, and these numerals are therefore not used to define the number of such Components or devices.
  • the named component is here essentially in the form of a tie rod or a pressure pot, since these components are frequently used in double clutches. In principle, however, this is simply a component which may consist of one or more individual parts or of an assembly.
  • tie rod feet or pressure pad feet can be such individual parts.
  • This component must be attached to a pressure plate. About the component, the pressure plate can be moved and / or acted upon by a force.
  • Tie rod and pressure pot are usually used to engage radially and axially around the actuation of a pressure plate to another part coupling. However, they can also engage around or through other assemblies or around another component, or at least contribute to bridging an axial distance between the pressure plate and the associated actuating system.
  • a simple connection concept is presented in a torque transmission device in which a pressure plate of a friction clutch or a friction brake with a component of an actuating system for axially displacing the pressure plate can be connected in a compact, radially small-sized way.
  • connection concept for a pressure plate is particularly advantageous for dual clutches used in which two partial clutches are arranged axially adjacent to each other and the two actuation systems of the partial clutches on the same side of the double clutch , In this case, the pressure plate of the partial coupling arranged away from the two actuating systems can be space-savingly coupled with an associated actuation system, as previously.
  • the connecting device of a pressure plate according to the invention in a torque transmission device is not limited to use in dual clutches, but in principle is advantageously suitable for all types of friction clutch and Reibungsbrems adopteden to reduce their radial space, although their use in double clutches there is particularly advantageous.
  • the connecting element of the component and / or the connection element of the pressure plate are plastically deformable at least at their associated ends, and that by a plastic deformation of the connecting element to the connection element, or by a plastic deformation of the connection element to the connecting element , The connection between the component and the pressure plate can be produced.
  • the plastic deformation can be realized for example by bending, upsetting, spreading or thickening.
  • the component to be connected to the pressure plate is at least partially applied to both axial sides of the pressure plate. Due to the fact that the component surrounds the pressure plate axially on both sides, a transmission of motion can take place in both axial directions. Thus, the associated actuating system can actively engage and actively disengage the pressure plate.
  • the compound is therefore equally advantageous for Kupplungseinschsysteme as well as for Kupplungsausgursysteme.
  • it can be provided with the same effect that the component to be connected to the pressure plate on two surfaces of the pressure plate, which point in opposite directions, at least partially applied.
  • the component to be connected to the pressure plate can be applied at least partially laterally in the circumferential direction on the connection element of the pressure plate. Because the component rests laterally against the connection element, the two parts are secured in a tangential direction relative to one another against rotation.
  • the component to be connected to the pressure plate is made at least in the region of the connecting element of a ductile material, such as steel, aluminum, magnesium or an alloy of these substances, whereby this area during assembly of the friction clutch or friction brake trained torque transmission device is plastically deformable.
  • the component to be connected to the pressure plate has a thin-walled shape at least in the region of the connecting element, as is the case, for example, with metal sheets or sheet metal parts, so that the component is at least in the region of the connecting element during assembly Torque transmission device is deformable.
  • a deformation of the component can be made, such that the component in the region of the connecting element surrounds the pressure plate axially on both sides.
  • the component such as a tie rod or a pressure pot, this can be made partially or completely as sheet metal parts.
  • the pressure plate can also be made of a ductile material at least in the region of its connection element and / or be formed as a thin-walled metal sheet which can be deformed in the region of the connection element for producing the connection.
  • the pressure plate as usual may consist of cast iron or other poorly deformable material, which is suitable for the pressure plate.
  • connection element of the pressure plate has at least one radial undercut.
  • connection element of the pressure plate can consist of several undercuts or undercuts. Undercuts are often used in the casting technique to secure by means of projections which protrude from the casting, the casting against accidental dislocation, for example from a mold or the like. Undercuts can also be used to limit the displacement between two components. This limitation of the relative movement to one another can act on one side or in several directions.
  • a force transmission in the radial direction between the pressure plate and the component to be connected to the pressure plate can be effected by such undercuts.
  • the component can be held by the pressure plate in the radial direction.
  • a stability of the connection against attacking centrifugal forces, as they arise, for example, by the rotation of a clutch can be ensured.
  • this component in an assembly step can be formed on one side or on both sides of the pressure plate radially inward. The deformation can be carried out in other embodiments of the compound also radially outward or in the circumferential direction.
  • openings such as axial through-holes in the pressure plate, can also be used as means for producing be provided connection of the connection. These openings can be used to transmit forces in one or more directions and / or to limit movement in one or more directions.
  • An alternative embodiment for securing the centrifugal force stability of the connection can be achieved in that the connecting element of the component is formed in a region immediately adjacent to the pressure plate at least partially closed, so that the centrifugal forces can be absorbed by the closed circumference.
  • a first pressure plate of a first drive motor side part of a coupling coupling formed as a torque transfer device assigned and connectable with a trained as Switzerlandanker first component, said first component, a second, transmission side Partial coupling and an axially fixed first counter-plate radially overlaps, and arranged in the following for the preparation of the connection between the first pressure plate and the first component and / or is formed:
  • a first connecting element on the pressure plate which has a plurality of first contact extensions radially offset from the body of the pressure plate and each provided with a first lateral bevel and a second lateral bevel and / or a tangential contact contour;
  • first connecting element on the component which is circumferentially closed in the region of the pressure plate connection and has a plurality of first tie rod feet axially offset from the body of the component, each having at least one first tab projecting axially thereon,
  • a plurality in the component radially inwardly extending contours which form axial abutment surfaces for the pressure plate, wherein the pressure plate can be used with the connection extensions in the component and can be applied to the stop surfaces during assembly of the torque transmission device, and then the tabs axially behind the terminal extensions are umlegbar.
  • the tabs can hereby be additionally applied to lateral bevels or lateral surfaces of the connection extensions.
  • the radially inwardly extending contours can be formed as beads with frontal abutment surfaces.
  • a first pressure plate of a first, part of the drive motor side partial coupling of a torque converter designed as a double clutch and connectable with a trained as a tie rod first component is connectable, said first component, a second, gear side partial coupling as well as an axially fixed first counter-plate radially engages over and / or axially engages, and arranged in the following for the preparation of the connection between the first pressure plate and the first component and / or is formed:
  • a second connecting element on the pressure plate which has a plurality of second contact extensions radially offset from the body of the pressure plate and each having a radial undercut and each with a first lateral bevel and a second lateral bevel and / or a tangential contact contour;
  • a second connecting element on the component which, viewed in the circumferential direction of the component in the area of the pressure plate connection, is predominantly interrupted and which has a plurality of second tie rod feet axially offset from the body of the component, each having at least one second tongue axially projecting therefrom;
  • the pressure plate can be used with the terminal extensions in the component and can be applied to the stop surfaces, and then the tabs axially behind the terminal extensions and / or laterally of the terminal extensions foldable while the end portions of the component positively engage in the undercuts, so that in the mounted torque transmission device the pressure plate and the component are firmly connected to one another in the axial direction and are secured against rotation with respect to each other in the circumferential direction, and the connection is protected in the radial direction against attacking centrifugal forces.
  • a tie rod which extends radially within a double clutch over a central, axially fixed counter plate, be connected to a drive motor side arranged pressure plate.
  • the tie rod can be fixed in the axial direction and in the circumferential direction on the pressure plate, so that the pressure plate is coupled in the axial direction of movement for disengaging or engaging the relevant sub-coupling with an associated actuating system and in the circumferential direction, the two interconnected parts against rotation are secured against each other.
  • Axial forces can be transmitted via this connection in both directions, whereby not necessarily an actuating system is necessary, which applies such forces in both directions.
  • a plurality of attachment points for the pressure plate may be provided on the pressure plate facing side of the tie rod, ie on the drive motor side.
  • the tie rod can have a pot-like body in a slightly conical shape.
  • a plurality of beads are advantageously formed in the axial direction in the tie rod, which form end faces stop surfaces for the pressure plate.
  • the pressure plate When mounting the designed as a friction clutch Drehmomentübertra- supply device, the pressure plate can be used with their radially offset from their preferably annular body terminal extensions in the tie rod and pushed against these stop surfaces. Tabs, which are formed at the feet of the tie rod, protrude radially in this installed state over the connection extensions of the pressure plate and can then be folded behind the pressure plate. This can be done, for example, by pressing, changing or rolling.
  • the tie rod and the pressure plate are not only axially but also in the circumferential direction firmly connected to each other, the terminal extensions of the pressure plate in this exemplary embodiment may have lateral bevels to which the folded tie rod material is additionally applied.
  • the Anpressplattenfort not only axially enclosed by the tie rods, but at least partially in the circumferential direction.
  • the tie rod in the entire speed range of the drive shaft and thus the clutch, which withstands radially outward centrifugal force and does not expand radially outward.
  • the joints with the pressure plate should not be able to shift radially outward in the coupling operation.
  • the tie rod near the connection points to the pressure plate have a closed contour over the circumference, which receives centrifugal forces safely.
  • connection technique can be selected, which can also absorb forces in the radial direction. Then the tie rod can either absorb the centrifugal forces themselves or the Glasankerfpune be held by the pressure plate.
  • This can be achieved, for example, by means of radial undercuts in the attachment extensions of the pressure plate, into which the tie rod material is molded during assembly, as a result of which the tie rod feet are supported radially on the pressure plate.
  • This eliminates the need for a circumferentially closed contour in the vicinity of the connection.
  • This has the advantage that intermediate spaces between the tie rod feet can be used for other components, for example, in order to connect a central counterplate of the double clutch with a driver ring.
  • a third pressure plate of a third drive-motor-side partial clutch of a second torque transmission element designed as a double clutch assigned and can be connected to a second component designed as a pressure pot, wherein formed as a pressure pot second component radially engages over a fourth, triggers the part clutch and an axially stationary second central counter-plate and / or passes through, see to make the connection between the third pressure plate and the second component designed as a pressure pot are arranged and / or configured as follows:
  • a third, fourth or fifth connecting element of the pressure plate which has a plurality of first, second, third and / or fourth locking recesses arranged in the body of the pressure plate, and a third, fourth or fifth connecting element of the second component designed as a pressure pot, which has a plurality of having axially offset from the body of this component first, second or third Drucktopfffurfure, each having at least one axially projecting third, fourth, fifth and / or sixth tab,
  • the pressure plate with the connection recesses can be inserted into the second component designed as a pressure cup during assembly of the torque transmission device and subsequently the tabs can be deformed and applied to the front side of the pressure plate facing away from the component, such that the pressure plate and the pressure cup which are in the assembled torque transmission device formed second component in the axial direction are firmly connected to each other and in the circumferential direction against rotation against each other, and the compound is protected in the radial direction against attacking centrifugal forces.
  • a pressure plate can be pressed within a dual clutch of an associated actuating system via a pressure pot. If both partial clutches are arranged axially next to one another and both associated actuating clutches System arranged on the same side, ie on the transmission side of the clutch, so engages the pressure pot of those of the two sub-couplings, which faces away from the actuating system, in this embodiment, radially over the other sub-coupling over and through the central counter-plate.
  • the pressure pot is supported axially in a circumferential groove introduced into the end face of the pressure plate. At this groove, the axial forces that are required to close the clutch can be transferred from the pressure pot to the pressure plate.
  • the groove provides for a radial undercut, by means of which the pressure pot can be supported radially on the pressure plate. So that the pressure pot can not move axially relative to the pressure plate, tabs of the pressure cup run radially outward on the connection element of the pressure plate and are deformed on the other side of the pressure plate during coupling assembly. By this deformation, such as bending, upsetting or spreading, the ends of the pressure pot bottles are applied to the outside of the connecting element of the pressure plate and especially to the gegenplattenferne end face of the pressure plate. As a result, the pressure plate and the pressure pot are firmly connected to one another in this embodiment of the torque transmission device.
  • the pressure pot can not rotate relative to the pressure plate, acting in the circumferential direction stop surfaces may be provided on the pressure pot and the pressure plate.
  • This can be achieved, for example, by means of pressure-type top bottles, which can be supported laterally on the connection element of the pressure plate.
  • the circumferential groove on the pressure plate may alternatively consist of several short areas, which alternatively or additionally can support the pressure pot in the circumferential direction against the pressure plate and thereby prevent it from twisting.
  • connection between the pressure plate and the pressure pot can be achieved by various embodiments of connection elements of the pressure plate and to this complementary connection elements of the pressure pot are produced.
  • the connecting elements for the axial force transmission, the axial securing elements for the captive against the pressure or main force direction, the circumferential support and the radial force support can be arranged at all suitable locations of the Drucktopffußes or the pressure pot and are not fixed to a particular arrangement.
  • the print top feet may each have a central area for the transmission of the compressive forces and the radial support.
  • Two lateral tabs can take over both the circumferential support, wherein the tabs rest on adjacent guide surfaces of the pressure plate, as well as the axial captive securing the pressure pot against the main force direction.
  • the pressure plate may have bores or other recesses through which the tabs of the pressure pot project and can be bent or spread back for attachment.
  • the borehole edges can advantageously serve as bending edges, which facilitates the assembly.
  • Drilling or otherwise shaped or made Asked through holes in the pressure plate can also be effective as a support of the pressure pot in the radial direction to protect against centrifugal forces and in addition in the circumferential direction as rotation.
  • a radial protection of the connection against centrifugal forces can alternatively or additionally also be produced by a respective step formed on the pressure plate in the area of the connection elements for each pressure-point foot of the pressure pot.
  • bearing surfaces can be provided as an aid for the assembly in the vicinity of the elements to be plasticized, ie substantially in the vicinity of the tabs of the pressure pot.
  • the print pot roots may have recesses axially behind the connection tabs.
  • the support is advantageously carried out in the immediate vicinity of the introduction of force, whereby an unwanted deformation of the body of the pressure pot during assembly is excluded.
  • the pressure pot can be connected by means of the connecting elements in the transport state of the clutch unit, when the clutch is not yet mounted with the actuation systems and the pressure pot is not yet pressed against the pressure plate, advantageously captive connected to the rest of the coupling.
  • the invention relates specifically to a friction clutch, such as a dual clutch in a drive train of a motor vehicle, with at least one connecting device of a pressure plate according to at least one embodiment presented here.
  • the construction concept of the torque transmission device according to the invention can also be realized in a friction brake, which has at least one pressure plate with one of the described connection devices.
  • Fig. 1 is a schematic, half-longitudinal view of a double clutch with a connecting device of a pressure plate according to a first
  • Fig. 2 is a schematic perspective view of the pressure plate together with
  • 3a is an enlarged detail view of a connection point of the pressure plate with a tie rod of FIG. 2 before an assembly step
  • FIG. 3b shows the detail of FIG. 3a after assembly
  • FIG. 4 shows a schematic perspective view of a part of a double clutch similar to FIG. 1 with a connecting device of a pressure plate according to a second embodiment
  • FIG. 5 is an enlarged detail view of a connection point of the pressure plate of FIG. 4 in the assembled state
  • Fig. 6 is a schematic, half-longitudinal view of a second
  • FIG. 7a is an enlarged detail view of a connection point of the pressure plate with a pressure pot according to FIG. 6 before an assembly step
  • FIG. 8a is an enlarged detail view of another embodiment of a
  • 9a is an enlarged detail view of another embodiment of a
  • the first friction clutch or friction brake device 1 shown in FIG. 1 is designed as a double clutch, which can couple a drive shaft 2 of a drive motor, not shown, via a flywheel 3 with a first transmission input shaft 4 and / or a second transmission input shaft 5 of a transmission (not shown) ,
  • the two transmission input shafts 4, 5 are arranged coaxially and radially one above the other.
  • a first partial clutch 6a and a second partial clutch 6b are present.
  • the first partial clutch 6a has an axially displaceable first pressure plate 7 and a first clutch disc 8.
  • the first clutch disc 8 is rotatably connected to the first transmission input shaft 4 via a first disc damper 9 integrated therewith.
  • the second partial clutch 6b has an axially displaceable second pressure plate 10 and a second clutch disc 1 1.
  • the second clutch disc 1 1 is rotatably connected to the second transmission input shaft 5 via a second disc damper 12 integrated therewith.
  • the two disc damper 9, 12 allow a limited relative rotational movement between the radially outer part and the radially inner part of the respective clutch disc 8, 1 first
  • the two partial clutches 6a, 6b have a common first counter-plate 13, which is arranged as an axially fixed central plate between the two clutch discs 8, 1 1.
  • the counter plate 13 is rotatably mounted relative to the transmission input shafts 4, 5, wherein it is supported radially inwardly via a support bearing 14 on the second transmission input shaft 5.
  • On the friction clutch or friction brake device 1 a plurality of first leaf springs 41 and a plurality of second leaf springs 42 are arranged distributed over the circumference, by means of which the two press plates 7, 10 are kept spring-loaded and centered.
  • the arrangement can build radially small, the leaf springs 41, 42 are not radially outside the clutch plates 8, 1 1 but axially behind the pressure plates 7, 10 are arranged.
  • the counter plate 13 is composed of two sheet metal parts 15, 16.
  • Each of the two sheet-metal parts 15, 16 has a radially aligned friction surface 17, 18, namely the first sheet metal part 15 a first friction surface 17 and the second sheet metal part 16 a second friction surface 18.
  • the two pressure plates 7, 10 also each have one radially oriented friction surface 19, 20, namely, the first pressure plate 7, a third friction surface 19 and the second pressure plate 10, a fourth friction surface 20th
  • the counter-plate 13 engages radially outward in the axial direction on the adjacent two clutch plates 8, 1 1 and the two pressure plates 7, 10 away.
  • the first sheet-metal part 15 has a bent first collar 22, which extends axially away from the first friction surface 17 of the counter-plate 13 in the direction of the drive motor and merges axially endwise for connection with a driver ring 23 in a connection geometry or in a connecting element.
  • the driver ring 23 is provided for transmitting torque from the drive shaft 2 of the drive motor, not shown, on the counter-plate 13.
  • the formation of the coupling between the driver ring 23 and the drive motor can be done in a known manner, for example via a spline 32 as shown in Fig. 4, or by means of spring elements between the driver ring 23 and the
  • the second sheet-metal part 16 of the counter-plate 13 forms the second friction surface 18 of the counter-plate 13 facing the transmission and supports all rotatable parts of the first friction-clutch or friction-braking device 1 via the support bearing 14 on the second transmission input shaft 5.
  • the second sheet-metal part 16 has a bent second collar 25, which extends axially away from the friction surface 18 of the counter-plate 13 in the direction of the transmission and merges axially endwise for connection to a clutch cover 26 in a connection geometry or in a connecting element.
  • the clutch cover 26 enables a force transmission from a first actuation system 29 to the first pressure plate in the first partial clutch 6a in interaction with a first lever-spring element 27 and a first component 28 designed as a tie rod and connected to the first pressure plate 7 7 for pressing the associated first clutch disc 8 with the counter-plate 13.
  • the clutch cover 26 allows but also in the second part of the clutch 6b in conjunction with a second lever-spring element 30 a Power transmission from a second actuation system 31 to the second pressure plate 10 for pressing the associated second clutch disc 1 1 against the counter-plate 13.
  • the first clutch disc 8 can be pressed by axial displacement of the zug tasteigen first pressure plate 7 against the counter-plate 13, whereby in each case a frictional connection to torque transmission can be produced between the compressed first clutch disk 8 and the counterplate 13 and between the compressed first clutch disk 8 and the pressure plate 7.
  • the second clutch disc 1 1 are pressed by axial displacement of the zug tribaligen second pressure plate 10 against the counter plate 13, whereby between the compressed second clutch disc 1 1 and the counter plate 13 and between the compressed second clutch disc 1 1 and the Anpressplat - te 10 each a frictional connection for torque transmission can be produced.
  • connection geometry between the counter-plate 13 and the driver ring 23 on the one hand and between the counter-plate 13 and the clutch cover 26 on the other hand can therefore be additionally provided.
  • a radial space-saving connection geometry between the first pressure plate 7 arranged on the drive side and the first component 28 designed as a tie rod is described in more detail below.
  • this component 28 designed as a tie rod advantageously has a slightly conical shape radially outward.
  • the component 28 changes into a support region 33 for the first lever-spring element 27.
  • a first connecting element 21 with a plurality of first Switzerlandankermos 7 36 is present, which form attachment points for the first pressure plate 7.
  • the tie rod feet 36 each have an axially projecting first tab 37.
  • a plurality of beads 34 extending in the axial direction are formed in the component 28.
  • these end faces form radially short abutment surfaces 35 for the pressure plates 7.
  • the pressure plate 7 has radially outwardly to the connecting element 21 of the component 28 geometrically complementary first connection element 24 with a plurality of the body of the pressure plate 7 radially offset terminal extensions 38. At the lateral ends of the connection extensions 38, first bevels 39a and second bevels 39b are respectively formed in the circumferential direction.
  • the pressure plate 7 is inserted with its radially offset from its annular body terminal extensions 38 in the component 28 and pushed against the abutment surfaces 35.
  • the tabs 37 of the component 28, which now protrude radially beyond the terminal extensions 38 of the pressure plate 7, are then folded behind the pressure plate 7 radially inward. This can be done for example by pressing, crimping or rolling.
  • the component 28 and the pressure plate 7 are not only axially but also circumferentially firmly connected to each other, in this embodiment at the lateral ends of the terminal extensions 38 in the circumferential direction in each case the first bevels 39a and the second bevels 39b formed on which additionally abut the radially inwardly folded tabs 37 of the component 28.
  • the terminal extensions 38 of the pressure plate 7 are not only axially enclosed by the component 28 but at least partially also in the circumferential direction.
  • connection between the component 28, so the tie rod and the pressure plate 7 can not solve under the influence of the centrifugal force of the rotating assembly speed
  • the connecting element 21 on the component 28 in the vicinity of the Anpressplattenbefest Trent executed circumferentially closed.
  • intermediate webs 40 are formed for each.
  • These intermediate webs 40 are not arched but have a planar design in order to be able to better absorb the centrifugally directed centrifugal force.
  • 4 and FIG. 5 show a similar embodiment, in which, however, the component 28, ie the tie rod, is not peripherally closed in the area of the pressure plate connection and accordingly no intermediate webs 40 are formed.
  • the component 28 has a second connecting element 43 with a plurality of second tie rod feet 44 which form fastening points for the pressure plate 7.
  • the tie rod feet 44 each have an axially projecting second tab 45.
  • the pressure plate 7 has a second connection element 46 which is complementary to the second connection element 43 of the component 28 and has a plurality of second connection extensions 47 radially offset from the body of the pressure plate 7.
  • First bevels 39a and second bevels 39b are formed at the lateral ends of the terminal extensions 47 in the circumferential direction.
  • a radial undercut 48 is formed on the connection extensions 47 in each case.
  • the tie rod feet 44 can be supported radially on the pressure plate 7 to accommodate centrifugal forces. Since no intermediate webs 40 between the tie rod feet 44 are required in this embodiment, arise free Gaps that can be used for other components. 4 shows by way of example how fastening elements 59, which connect the counterplate 13 and the driver ring 23 with one another, are arranged in the circumferential direction between the tie rod feet 44, saving radial space, to approximately the same diameter as the pressure plate connection.
  • FIG. 6 shows a second friction clutch or friction brake device 49 designed as a double clutch, but not in a three-plate design with two pressure plates 7, 10 and a central counterplate 13, like the first friction clutch or friction brake device 1 according to FIG 1, but is implemented in a four-plate design, wherein the fourth plate is a further counter-plate 50 arranged on the drive side.
  • This friction clutch or friction brake device 49 can couple a drive shaft 2 of a drive motor with a first transmission input shaft 4 and a second transmission input shaft 5 of a transmission via a torsional vibration damper 51 designed as a dual mass flywheel.
  • a third partial clutch 52a and a fourth partial clutch 52b are provided.
  • the third partial clutch 52a has an axially displaceable third pressure plate 53, a third clutch plate 54 and the further counter plate 50.
  • the further counter-plate 50 is coupled on the drive side with the torsional vibration damper 51.
  • the third clutch plate 54 is rotatably connected to the first transmission input shaft 4.
  • the fourth partial clutch 52b has an axially displaceable fourth pressure plate 55 and a fourth clutch disc 56.
  • the fourth clutch disc 56 is non-rotatably connected to the second transmission input shaft 5.
  • the two partial clutches 52a, 52b have a common second counter-plate 57.
  • the second counter-plate 57 is arranged axially fixed centrally and in turn is supported via a support bearing 14 on the second transmission input shaft 5 from.
  • the counter-plate 57 has a third collar 58, bent on one side, which extends axially away from the body of the counter-plate 57 in the direction of the drive motor or to the drive shaft 2, thereby axially and radially engaging over the drive-mootor third sub-clutch 52a.
  • the third collar 58 goes axially end for connection to the other counter-plate 50 in a connection geometry not described here in more detail; he therefore has suitable fasteners.
  • the pressure plates of actuating systems can be pressed via pressure pots.
  • the pressure plate of the motor-proximal third sub-clutch 52a ie the third pressure plate 53
  • the pressure plate of the motor fourth fourth sub-clutch 52b is axially displaceable by a third actuating system 61 via a second component 60 designed as a pressure pot.
  • the pressure plate of the motor fourth fourth sub-clutch 52b so the fourth pressure plate 55 is axially displaceable by a fourth actuating system 63 via a further pressure pot 62.
  • the associated third clutch disc 54 is pressed between the third pressure plate 53 and the axially outer, further counter-plate 50.
  • the third pressure plate 53 can be axially displaced via the second component 60 designed as a pressure pot by means of the third actuating system 61.
  • the associated fourth clutch disc 56 is pressed between the fourth pressure plate 55 and the axially central second counter-plate 57.
  • the fourth pressure plate 55 can be axially displaced by the further pressure pot 62 by means of the fourth actuating system 63.
  • the second component 60 ie the pressure pot of the third sub-clutch 52a, which is further away from the two actuating systems 61, 63, engages axially and radially over the fourth sub-clutch 52b.
  • the second component 60 designed as a pressure pot is supported axially in a circumferential groove 69 introduced into the third pressure plate 53 at the front.
  • the circumferential groove 69 acts as a radial undercut, on which the second component 60 can be supported radially on the pressure plate 53.
  • the circumferential groove 69 is additionally effective as a centrifugal force backup.
  • the second component 60 is also secured to the third pressure plate 53 so that the component 60 does not act against the main force direction, so in this embodiment, contrary to the closing direction of the pressure plate 53 can solve. This will be discussed later.
  • FIGS. 7a and 7b in FIGS. 8a and 8b and in FIGS. 9a and 9b, three exemplary embodiments of connection geometries or connecting elements between the second component 60 designed as a pressure pot and the third pressure plate 53 are shown in greater detail.
  • the second component 60 designed as a pressure pot has a third connecting element 64.
  • This third connection element 64 comprises a plurality of first pressure-drop feet 65, which extend in the axial direction away from the main body of the second component 60.
  • a third tab 66a is formed on the respective printing-block roots 65 at its one lateral end and a fourth tab 66b is formed on the opposite other lateral end, which project in the axial direction from the printing-pot roots 65.
  • a central support region 70 is formed, which engages in the mounted state in an adjacent end-side circumferential groove 69 of the third pressing plate 53 and cooperates therewith.
  • the groove connection acts as a radial support of the second component 60 on the third pressure plate 53 and can thus absorb radial centrifugal forces. All elements that are multiple on the circumference and can transmit radial forces are also able to align the respective adjacent components relative to each other and center.
  • connection element 67 is formed, which is geometrically complementary to the connecting element 64 of the second component 60 is formed.
  • This connection element 67 comprises a plurality of first connection recesses 68a and second connection recesses 68b, which are distributed over the outer circumference of the body of the pressure plate 53, so that every End recess 68a, 68b can receive an adjacent tab 66a, 66b of the second component 60.
  • the tabs 66a, 66b of the second component 60 extend radially outward on the associated connection recesses 68a, 68b of the connection element 67 of the pressure plate 53 and become along the assembly on the other side of the pressure plate 53 deformed (see Fig. 7b).
  • this deformation for example bending, upsetting or spreading, the ends of the tabs 66a, 66b are applied to the connection element 67 of the third pressure plate 53 and especially to the end face of this third pressure plate 53.
  • the third pressure plate 53 and the second component 60 are firmly connected to each other.
  • the second component 60 can not rotate in the circumferential direction relative to the third pressure plate 53, it makes sense to provide abutment surfaces acting on the second component 60 and the third pressure plate 53 in the circumferential direction.
  • this is provided by the tabs 66a, 66b, which can be supported laterally on the connection recesses 68a, 68b.
  • the tabs 66a, 66b thus assume the circumferential support and the axial captive securing of the second component 60.
  • FIGS. 8a and 8b show a different connection geometry between the second component 60 and the third pressure plate 53.
  • a fourth connecting element 71 is formed on the second component 60 formed as a pressure pot, which has a plurality of second pressure pad feet 72, one of which Drucktopffuß 72 in Fig. 8a and Fig. 8b is shown by way of example.
  • the printing pot root 72 has a fifth tab 73, which has a trapezoidal cross section and extends in the axial direction away from the main body of the second component 60 in the direction of the adjacent third pressure plate 53.
  • a fourth connection element 74 is formed at the third pressure plate 53.
  • This fourth connection element 74 has in this embodiment, a plurality of third connection recesses 75, which are formed as approximately square punched.
  • connection tion 75 take the respectively associated fifth tab 73 during assembly in itself, so that they penetrate the connection recess 75 and bent on the side facing away from the second component 60 on the front side of the contact plate 53 and applied flat, the rounded edge of the Connection recess 75 can be used as a bending edge.
  • the second component 60 with the third contact plate 53 fixed and captive connected.
  • the connection recess 75 as a radial and circumferential support for the second component 60 is effective, so that no additional elements are required.
  • FIGS. 9a and 9b A similar exemplary embodiment with other deformation elements is shown in FIGS. 9a and 9b.
  • a fifth connecting element 76 is formed on the second component 60 designed as a pressure pot, which has a plurality of third pressure pot feet 77, of which a pressure pot root 77 is shown by way of example in FIGS. 9a and 9b.
  • the second component 60 has a sixth lug 78 which extends in the axial direction away from the main body of the second component 60 in the direction of the adjacent third pressure plate 53.
  • a fifth connection element 79 is formed in this embodiment.
  • the fifth connection element 79 has in this embodiment, a plurality of fourth connection recesses 80, which are formed as round holes.
  • the illustrated terminal recess 80 receives the adjacent sixth tab 78 during assembly, so that it projects through the fourth connection recess 80 and on the side facing away from the second component 60 on the front side of the third contact plate 53 is bent and applied flat, wherein the Edge of the fourth connection recess 80 can be used as a bending edge.
  • the second component 60 with the third contact plate 53 fixed and captive connected.
  • the fourth connection recess 80 acts as a radial and circumferential support for the second component 60, so that no additional elements are required for this function.
  • the sixth tabs 78 of the second component 60 are not bent in one piece, but spread apart behind the fourth connection recesses 80 (FIG. 9b).
  • the spread-apart plate halves 81 a, 81 b attach themselves to the edge of the fourth connection recess 80 and / or to the third pressure plate. te 53 on the side remote from the second component 60 side.
  • Spread tabs 78 are particularly well suited to securely and firmly fix a component to round holes in the axial direction. In order to spread the tabs 78, they must have been previously generated by columns. This splitting can be done either in advance prior to assembly or in an assembly step during assembly. For example, it is possible to perform the splitting and spreading of the tabs 78 in a single operation.
  • the third Drucktopffborne 77 of this embodiment have axially behind the tabs 78 each have a recess 82 which can be used to hold and support the component 60 in the bending and / or splitting of the tabs 78 in a mounting device.
  • FIGS. 9a and 9b show that a radial undercut for supporting the second component 60 in the radial direction can also be formed by a respective shoulder 83 on the third pressure plate 53, against which the respective pressure pot root 77 can rest in the radial direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

L'invention concerne un dispositif de transmission de couple (1), comprenant une plaque de pressage (7), qui est montée mobile dans le sens axial et qui peut être reliée à un élément structural (28), un système d'actionnement (29) servant à actionner le dispositif de transmission de couple (1) étant associé à cet élément structural (28). L'invention vise ici à obtenir une construction compacte et se caractérise à cet effet en ce que pour l'assemblage de l'élément structural (28) avec la plaque de pressage (7), un élément d'assemblage (21) est formé et/ou ajouté sur l'élément structural (28) et un élément de raccordement (24) sur la plaque de pressage (7), de telle sorte que l'élément structural (28) ainsi que la plaque de pressage (7) peuvent être amenés en prise solide l'un avec l'autre uniquement par le biais de l'élément d'assemblage (21) de l'élément structural (28) et par le biais de l'élément de raccordement (24) de la plaque de presage (7), de sorte que le seul assemblage de l'élément structural (28) et de la plaque de pressage (7) permet de transmettre les forces entre eux deux dans les deux directions axiales et/ou de garantir que l'élément structural (28) et la plaque de pressage (7) peuvent uniquement se déplacer ensemble dans la direction axiale. Le dispositif de transmission de couple (1) selon l'invention peut être réalisé sous la forme d'un accouplement à friction ou d'un frein à friction.
PCT/DE2017/100860 2016-11-21 2017-10-12 Dispositif de transmission de couple Ceased WO2018091022A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112017005870.8T DE112017005870A5 (de) 2016-11-21 2017-10-12 Drehmomentübertragungseinrichtung

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DE102016222892.7A DE102016222892B4 (de) 2016-11-21 2016-11-21 Drehmomentübertragungseinrichtung
DE102016222892.7 2016-11-21

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WO (1) WO2018091022A1 (fr)

Cited By (1)

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WO2019228586A1 (fr) * 2018-06-01 2019-12-05 Schaeffler Technologies AG & Co. KG Système d'embrayage multiple muni d'un pot de pression traversant un embrayage, module hybride et chaîne cinématique

Families Citing this family (1)

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DE102022109828B3 (de) 2022-04-25 2023-05-04 Schaeffler Technologies AG & Co. KG Drehmomentbegrenzungsvorrichtung

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WO2015144163A1 (fr) 2014-03-27 2015-10-01 Schaeffler Technologies AG & Co. KG Plateau intermédiaire pour embrayage à disques multiples et procédé de fabrication d'un plateau intermédiaire
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DE102014221396B3 (de) * 2014-10-22 2015-11-19 Schaeffler Technologies AG & Co. KG Druckplattenbaugruppe für eine Kupplungsvorrichtung ohne Blattfedern und Kupplungsvorrichtung

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FR2824370B1 (fr) * 2001-05-04 2003-06-27 Valeo Mecanisme d'embrayage a friction du type de diaphragme du genre tire commande en poussant
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EP1302687A2 (fr) * 2001-10-09 2003-04-16 ZF Sachs AG Dispositif à embrayages multiples
EP1524446A1 (fr) 2003-10-17 2005-04-20 LuK Lamellen und Kupplungsbau Beteiligungs KG Dispositif d'embrayage.
DE102006022054A1 (de) 2005-06-09 2006-12-14 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Kupplungsscheibe
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DE102016222892B4 (de) 2018-06-21
DE112017005870A5 (de) 2019-08-08

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