WO2021073684A1 - Torsional vibration damper - Google Patents

Torsional vibration damper Download PDF

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Publication number
WO2021073684A1
WO2021073684A1 PCT/DE2020/100858 DE2020100858W WO2021073684A1 WO 2021073684 A1 WO2021073684 A1 WO 2021073684A1 DE 2020100858 W DE2020100858 W DE 2020100858W WO 2021073684 A1 WO2021073684 A1 WO 2021073684A1
Authority
WO
WIPO (PCT)
Prior art keywords
vibration damper
torsional vibration
torque
arc spring
intermediate plate
Prior art date
Application number
PCT/DE2020/100858
Other languages
German (de)
French (fr)
Inventor
Marc Finkenzeller
Roman Weisenborn
Pascal Strasser
Original Assignee
Schaeffler Technologies AG & 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 & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Priority to EP20799609.1A priority Critical patent/EP4045815A1/en
Priority to DE112020005144.7T priority patent/DE112020005144A5/en
Priority to CN202080070757.1A priority patent/CN114502857A/en
Publication of WO2021073684A1 publication Critical patent/WO2021073684A1/en

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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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
    • F16F15/131—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses
    • F16F15/13142—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses characterised by the method of assembly, production or treatment
    • F16F15/1315—Multi-part primary or secondary masses, e.g. assembled from pieces of sheet steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • 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
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
    • F16F15/145—Masses mounted with play with respect to driving means thus enabling free movement over a limited range
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K2006/4825—Electric machine connected or connectable to gearbox input 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
    • F16D2013/703—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members the pressure plate on the flywheel side is combined with a damper
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/22—Vibration damping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the invention relates to a torsional vibration damper which can be used in a drive train of a hybrid vehicle and which is constructed as a two-mass flywheel and which comprises a primary part and a multi-part secondary part which are arranged so as to be rotatable about an axis of rotation relative to one another, as well as a spring damper device which absorbs torsional vibrations of the primary part and / or of the secondary part, furthermore the torsional vibration damper comprises a separating clutch which is assigned to an arc spring flange of the secondary part and which includes an actuating device and a clutch disc inserted between an axially displaceable pressure plate and the arc spring flange.
  • torsional vibration dampers constructed as dual mass flywheels (DMF) are known from the prior art.
  • DMF dual mass flywheels
  • DE 102012 202 255 A1 shows such a torsional vibration damper which can be used for eradication or damping and which can be used in a drive train between the crankshaft of the internal combustion engine and, for example, a clutch upstream of the manual gearbox.
  • a torsional vibration damper is usually connected downstream of the internal combustion engine, to which the electric motor is connected, in order to save weight and space in the torque flow.
  • a friction or separating clutch is provided between the internal combustion engine and the electric motor, which clutch enables the internal combustion engine to be decoupled when the motor vehicle is driven exclusively by the electric motor should.
  • a centrifugal pendulum can be used to achieve the required isolation goals of the drive train.
  • EP 2 769 112 A1 shows a drive train for a hybrid vehicle.
  • a crankshaft of the internal combustion engine is connected via a torsional vibration damper to an input side of a clutch designated as a K0 separating clutch.
  • a torque is transmitted via this clutch to an output element of the K0 separating clutch, which is coupled to an automatic transmission via a transmission input shaft, for example.
  • a two-mass flywheel constructed as a torsional vibration damper is known, which is intended for the hybrid drive train of a combustion engine-driven vehicle, the secondary part of the two-mass flywheel being assigned a centrifugal pendulum device.
  • the arc spring flange of the modular torsional vibration damper is extended radially on the inside and formed into a bearing dome which is supported on the primary part via a support bearing.
  • the curved spring flange includes a torque pot aligned in the output direction and concentric to the axis of rotation, to which an intermediate plate, which can optionally be expanded to form a centrifugal pendulum device, is fastened with positive fit and play, which is in contact via a leaf spring with the pressure plate, which is in contact by means of a lever spring of the actuating device the clutch is axially displaceable.
  • the intermediate plate also called the cover
  • the intermediate plate is positively positioned axially on the torque cup via a toothing, with torque transmission from the arc spring flange always taking place via the torque cup to the intermediate plate and then via the leaf spring to the pressure plate.
  • the arc spring flange is assigned a torque pot aligned in the output direction and concentrically to the axis of rotation, to which an intermediate plate is fastened in a form-fitting manner and with play.
  • the intermediate plate which performs several functions, is connected to the pressure plate of the separating clutch via a leaf spring.
  • the intermediate plate can assume a support function for the pendulum masses of a centrifugal pendulum device.
  • the inventive concept advantageously offers the possibility of expanding the modular torsional vibration damper to achieve improved damping with little effort by a centrifugal pendulum device.
  • the torsional vibration damper can thus be adapted to different drive train combinations, for example in that a centrifugal pendulum can optionally be implemented in connection with the intermediate plate in order to improve the isolation goals.
  • a structurally and at the same time functionally improved torsional vibration damper can be realized, which is simple and inexpensive to manufacture and does not require any additional effort during assembly.
  • the intermediate plate when the separating clutch is disengaged, the intermediate plate is acted upon by a restoring force of the leaf spring cooperating with the pressure plate. Due to the existing installation clearance between the torque pot and the intermediate plate, full performance is not achieved.
  • the flybridge vehicle In the open state of the Trennkupp development, the flybridge vehicle is usually driven exclusively by the electric motor, with the internal combustion engine at a standstill.
  • the lever spring that interacts with the actuating device also called a plate spring, is frictionally supported on a locking ring inserted in a groove of the torque cup via a wire ring and the intermediate plate.
  • the intermediate plate is additionally supported frictionally on the torque pot and thus at the same time the existing centrifugal pendulum device is connected to the torque pot as required.
  • This structural design advantageously enables simple assembly and, if necessary, also simple dismantling of the intermediate plate without an additional, play-free material or form-fitting connection such as a welded or riveted connection.
  • the Fliehkraftpen del For an internal combustion engine, the Fliehkraftpen del adopted forms a supplementary measure for vibration damping.
  • An advantageous embodiment of the invention provides that cam tracks for running rollers of pendulum masses of the centrifugal pendulum are introduced into the intermediate plate, which is axially fixed via a locking ring attached to the end of the torque cup.
  • the torsional vibration damper can thus be supplemented by a centrifugal pendulum device by adding the pendulum masses, rollers and securing elements by means of a simple measure.
  • the torque pot rests against the arc spring flange with a closed sheet metal ring and is fastened by means of circumferentially positioned rivet connections.
  • the sheet metal ring close on one side, beveled at right angles, ge by longitudinal slots separated sections, which are guided through openings in the arc spring flange and aligned concentrically to the axis of rotation in the built-in state.
  • the torque pot is supported in the radial direction on the intermediate plate and thus effectively protected against deformation at high speeds and the associated centrifugal force.
  • at least one leaf spring is provided for torque transmission from the intermediate plate to the pressure plate.
  • the pressure plate preferably includes a plurality of radially aligned tabs guided through longitudinal slots by the torque pot, to which the Blattfe is attached.
  • the leaf spring which enables axial displacement of the pressure plate, also creates a restoring force for the actuator of the actuating device of the K0 separating clutch when the separating clutch is open.
  • a hydraulic actuator also known as a Concentric Slave Cylinder (CSC), consisting of a hydrostatic slave cylinder, which is connected via a hydraulic line to a master cylinder that is actuated by a driver by means of a clutch pedal, is preferably suitable for actuating the separating clutch.
  • the slave cylinder is assigned a release bearing designed as a roller bearing, which is in contact with the separating clutch directly via the lever spring.
  • the invention can be transferred to a mechanical or electromechanical actuating device.
  • the friction surface of the arc spring flange and / or the friction surface of the pressure plate can be roughened or profiled if necessary to achieve higher friction in the manufacturing process, for example during the punching process or, if necessary, by additional machining.
  • a cylindrical leg enclosing the centrifugal pendulum device at a radial distance from one another is attached to a cover element of the primary part and, for example, retains pendulum masses released from the centrifugal pendulum device in the event of damage.
  • Fig. 1 shows a torsional vibration damper in half section in a first Auspar approximately form with a K0 separating clutch and a variably connected centrifugal pendulum device
  • FIG. 2 shows the detail Z from FIG. 1 in an enlarged illustration.
  • a built as a two-mass flywheel Drehschwingungsdämp fer 1 is shown, which is preferably be true for a drive train of a flybridge vehicle, which includes an internal combustion engine and an electric motor as a drive, which are not shown.
  • the torsional vibration damper 1 comprises on the drive side a primary part 2 screwed to the internal combustion engine and a multi-part secondary part 3 associated with an output side, which are arranged to be rotatable together about an axis of rotation 4 and rotatable relative to one another.
  • an arc spring 5 In the torque flow between the primary part 2 and the secondary part 3, an arc spring 5, a closing spring damper device 6 is arranged.
  • the arc springs 6 inserted in a spring space 8 delimited by the primary part 2 and an associated cover element 7 are supported on the one hand on the primary part 2 and on the other hand on an arc spring flange 9 assigned to the secondary part 3, which forms the output element of the spring damper device 6.
  • the relative rotation between the primary part 2 and the secondary part 3 enables a support bearing 10 designed as a roller bearing.
  • the arc spring flange 9 is extended radially inward and formed into a bearing dome 11, which is supported by means of the support bearing 10 on a shoulder of an angled holder 12 is, which is taken together with the primary part 2 via crankshaft bolts 13 on a crankshaft flange 14 fasten.
  • a friction ring 16, 17 is supported radially on the inside on both sides of the arc spring flange 9, each of which is acted upon by a disc spring 18, 19, which is is mutually supported on the primary part 2 and the cover element 7 of the primary part 2.
  • the torsional vibration damper 1 includes a KO separating clutch 15 which is connected to the arc spring flange 9 of the secondary part 3 and which is designed as a friction clutch.
  • the KO separating clutch 15 comprises a torque pot 20 fastened to the arc spring flange 9, which for this purpose rests against the arc spring flange 9 with a closed sheet metal ring 22 and is fastened by means of riveted connections 41.
  • the sheet metal ring 22 is joined by sections bent at right angles, separated by longitudinal slots 31, which are guided through openings 21 in the arc spring flange 9.
  • an intermediate plate 23 which can optionally be expanded to form a centrifugal pendulum device 24, is arranged in a form-fitting manner via a toothing (not shown), on which pendulum masses 29 of a centrifugal pendulum device 24 are attached on both sides via rollers can be.
  • cam tracks (not shown) for the running rollers of the pendulum masses 29 are introduced into the intermediate plate 23, which is axially fixed via a locking ring 30 attached to the end of the torque cup 20.
  • a burst protection 40 for the Fliehkraftpen delISS 24 is on the cover element 7 of the primary part 2, the Fliehkraftpen del Hughes 24 radially spaced enclosing angled sheet is introduced.
  • the intermediate plate 23 is in contact via leaf springs 25 (shown in FIG. 2) with a pressure plate 26, which is axially displaceable by means of a lever spring 27, also called a cup spring, of an actuating device 28 of the KO separating clutch 15.
  • the pressure plate 26 comprises a plurality of radially aligned, guided through longitudinal slots 31 of the torque pot 20 brackets 32 to which the leaf springs 25 are attached.
  • the hydraulic actuator 28 also called Concentric Slave Cylinder (CSC) includes a slave cylinder 37 which is connected via a hydraulic line to a master cylinder (not shown) which can be operated by a driver by means of a clutch pedal.
  • the slave cylinder 37 is a assigned as a roller bearing release bearing 38, which is directly connected to the lever spring 27 in an operative connection.
  • the torque transmission also known as the torque path
  • the torque transmission always runs from the bow spring flange 9 via the torque pot 20 to the intermediate plate 23, also known as the cover, and then via at least one leaf spring 25 to the pressure plate 26 a force application to the lever spring 27, whereby the pressure plate 26 moves axially in the direction of the primary part 2 and thereby a clutch disc 33 presses against a friction surface of the arc spring flange 9, creating a frictional connection for torque transmission.
  • the torque path runs from the clutch disk 33 into an associated output hub 34, the plug-in toothing 35 of which is intended, for example, for the form-fitting reception of a transmission input shaft (not shown).
  • the K0 separating clutch 15 is shown in the geöff designated state in which the drive of the hybrid vehicle takes place without internal combustion engine.
  • the intermediate plate 23 is pressed with a preload spring force of the leaf spring 25 against the stop forming a stop, fixed to the torque pot 20 Si cherungsring 30, with due to the existing game between torque pot 20 and intermediate plate 23 no full performance can be achieved.
  • the Hebelfe 27 is supported by a wire ring 36 on the intermediate plate 23, which is force-locked against the locking ring 30 becomes.
  • FIG. 2 clarifies the intermediate plate 23 supported on the securing ring 30 and the tabs 32 of the pressure plate 26, which are guided through the longitudinal slots 31 of the torque top 20, in a larger representation Wire ring 36 is shown, which is supported by force from the lever spring 27 on the side facing away from the hedging ring 30 on the intermediate plate 23.
  • FIG. 2 shows the leaf spring 25 fastened to the intermediate plate 23 by means of riveted connections 39.

Abstract

The invention relates to a torsional vibration damper (1) which is installed in a powertrain of a hybrid vehicle and is designed as a dual-mass flywheel and which comprises a primary section (2), a multipart secondary section (3), and a spring damping device (6) that damps torsional vibrations of the primary section (2) and/or the secondary section (3). The torsional vibration damper (1) additionally comprises a KO separating clutch (15) which is paired with an arc spring flange (9) of the secondary section (3) and comprises an actuation device (28) and a clutch disc (33) that is installed between an axially movable pressing plate (26) and the arc spring flange (9), said arc spring flange being supported against the radial inner face of the primary section (2) via a support bearing (10). The arc spring flange (9) is paired with a torque pan (20) which is aligned concentrically to the rotational axis (4) and to which an intermediate plate (23) is secured that can optionally be upgraded into a centrifugal pendulum device (24) and is in contact with the pressing plate (26) via a leaf spring (25), said pressing plate being axially movable by means of a lever spring (27) of the KO separating clutch (15).

Description

Drehschwinaunasdämpfer Torsional vibration damper
Die Erfindung betrifft einen Drehschwingungsdämpfer, der in einen Antriebsstrang ei nes Hybridfahrzeugs einsetzbar und als Zweimassenschwungrad aufgebaut ist und der ein Primärteil und ein mehrteiliges Sekundärteil umfasst, die um eine Drehachse relativ zueinander verdrehbar angeordnet sind, sowie eine Federdämpfereinrichtung, welche Drehschwingungen des Primärteils und/oder des Sekundärteils dämpft, wei terhin umfasst der Drehschwingungsdämpfer eine Trennkupplung, die einem Bogen federflansch des Sekundärteils zugeordnet ist und die eine Betätigungseinrichtung einschließt sowie eine zwischen einer axial verschiebbaren Anpressplatte und dem Bogenfederflansch eingesetzte Kupplungsscheibe. The invention relates to a torsional vibration damper which can be used in a drive train of a hybrid vehicle and which is constructed as a two-mass flywheel and which comprises a primary part and a multi-part secondary part which are arranged so as to be rotatable about an axis of rotation relative to one another, as well as a spring damper device which absorbs torsional vibrations of the primary part and / or of the secondary part, furthermore the torsional vibration damper comprises a separating clutch which is assigned to an arc spring flange of the secondary part and which includes an actuating device and a clutch disc inserted between an axially displaceable pressure plate and the arc spring flange.
In Kraftfahrzeugen, die durch Brennkraftmaschinen angetrieben werden, wird durch die Funktionsweise der Brennkraftmaschine von deren Kurbelwelle ein nicht kontinu ierliches Drehmoment in Form von Drehschwingungen auf den Antriebsstrang über tragen. Zur Dämpfung der Drehschwingungen sind aus dem Stand der Technik als Zweimassenschwungräder (ZMS) aufgebaute Drehschwingungsdämpfer bekannt. Beispielsweise zeigt die DE 102012 202 255 A1 einen derartigen zur Tilgung oder Dämpfung einsetzbaren Drehschwingungsdämpfer, der in einem Antriebsstrang zwi schen der Kurbelwelle der Brennkraftmaschine und beispielsweise einer dem Schalt getriebe vorgelagerten Schalttrennkupplung einsetzbar ist. In motor vehicles that are driven by internal combustion engines, a noncontinuous torque in the form of torsional vibrations is transmitted to the drive train by the functioning of the internal combustion engine from its crankshaft. To dampen the torsional vibrations, torsional vibration dampers constructed as dual mass flywheels (DMF) are known from the prior art. For example, DE 102012 202 255 A1 shows such a torsional vibration damper which can be used for eradication or damping and which can be used in a drive train between the crankshaft of the internal combustion engine and, for example, a clutch upstream of the manual gearbox.
Um strenger werdende Emissionsnormen sowie die geforderten Flottenverbräuche er füllen zu können, setzen viele Automobilhersteller auf eine Hybridisierung des An triebsstranges. Bei Kraftfahrzeugen mit einem Hybridantrieb, der eine Brennkraftma schine (BKM) und zumindest einen Elektromotor umfasst, ist um Gewicht und Bau raum zu sparen im Drehmomentfluss üblicherweise der Brennkraftmaschine ein Dreh schwingungsdämpfer nachgeschaltet, an den sich der Elektromotor anschließt. Dabei ist zwischen der Brennkraftmaschine und dem Elektromotor eine Reibungs- bzw. Trennkupplung vorgesehen, die ein Entkoppeln der Brennkraftmaschine ermöglicht, wenn der Antrieb des Kraftfahrzeugs ausschließlich über den Elektromotor erfolgen soll. Um die geforderten Isolationsziele des Antriebsstrangs zu erreichen, kann ein Fliehkraftpendel eingesetzt werden. In order to be able to meet the stricter emission standards and the required fleet consumption, many automobile manufacturers rely on hybridization of the drive train. In motor vehicles with a hybrid drive, which includes an internal combustion engine (BKM) and at least one electric motor, a torsional vibration damper is usually connected downstream of the internal combustion engine, to which the electric motor is connected, in order to save weight and space in the torque flow. In this case, a friction or separating clutch is provided between the internal combustion engine and the electric motor, which clutch enables the internal combustion engine to be decoupled when the motor vehicle is driven exclusively by the electric motor should. A centrifugal pendulum can be used to achieve the required isolation goals of the drive train.
In der EP 2 769 112 A1 ist ein Antriebsstrang für ein Hybridfahrzeugs gezeigt. Dabei ist eine Kurbelwelle der Brennkraftmaschine über einen Drehschwingungsdämpfer mit einer Eingangsseite einer als K0-Trennkupplung bezeichneten Schaltkupplung ver bunden. Über diese Kupplung wird ein Drehmoment auf ein Abtriebselement der K0- Trennkupplung übertragen, das beispielsweise über eine Getriebeeingangswelle mit einem Automatikgetriebe gekoppelt ist. EP 2 769 112 A1 shows a drive train for a hybrid vehicle. A crankshaft of the internal combustion engine is connected via a torsional vibration damper to an input side of a clutch designated as a K0 separating clutch. A torque is transmitted via this clutch to an output element of the K0 separating clutch, which is coupled to an automatic transmission via a transmission input shaft, for example.
Aus der DE 10 2019 112 430 A1 ist ein als Drehschwingungsdämpfer aufgebautes Zweimassenschwungrad bekannt, das für den Hybridantriebsstrang eines brennkraft maschinengetriebenen Fahrzeugs bestimmt ist, wobei dem Sekundärteil des Zwei massenschwungrades eine Fliehkraftpendeleinrichtung zugeordnet ist. From DE 10 2019 112 430 A1 a two-mass flywheel constructed as a torsional vibration damper is known, which is intended for the hybrid drive train of a combustion engine-driven vehicle, the secondary part of the two-mass flywheel being assigned a centrifugal pendulum device.
Es ist die Aufgabe der vorliegenden Erfindung, einen baulich und/oder funktional ver besserten, eine Kupplung einschließenden, modular aufgebauten Drehschwingungs dämpfer bereitzustellen, der vereinfacht und kostengünstig herstellbar ist. It is the object of the present invention to provide a structurally and / or functionally improved, a clutch including, modular torsional vibration damper, which is simplified and inexpensive to manufacture.
Die zuvor genannte Problemstellung wird mittels eines Drehschwingungsdämpfers ge löst, der gemäß den Merkmalen des Patentanspruchs 1 aufgebaut ist. Vorteilhafte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen angegeben. The aforementioned problem is solved by means of a torsional vibration damper, which is constructed according to the features of claim 1. Advantageous embodiments of the invention are given in the dependent claims.
Erfindungsgemäß ist der Bogenfederflansch des modulartig aufgebauten Drehschwin gungsdämpfers radial innenseitig verlängert und zu einem Lagerdom geformt, der über ein Stützlager an dem Primärteil abgestützt ist. Weiterhin schließt der Bogenfe derflansch einen in Abtriebsrichtung und konzentrisch zu der Drehachse ausgerichte ten Drehmomenttopf ein, an dem formschlüssig und spielbehaftet ein optional zu einer Fliehkraftpendeleinrichtung ausbaufähiges Zwischenblech befestigt ist, welches über eine Blattfeder mit der Anpressplatte in Kontakt steht, die mittels einer Hebelfeder der Betätigungseinrichtung der Trennkupplung axial verschiebbar ist. Bevorzugt ist das auch Deckel genannte Zwischenblech über eine Verzahnung form schlüssig auf dem Drehmomenttopf axial positioniert, wobei eine Drehmomentüber tragung von dem Bogenfederflansch ausgehend stets über den Drehmomenttopf zu dem Zwischenblech und anschließend über die Blattfeder zu der Anpressplatte erfolgt. Dazu ist dem Bogenfederflansch ein in Abtriebsrichtung und konzentrisch zu der Drehachse ausgerichteter Drehmomenttopf zugeordnet, an dem formschlüssig und spielbehaftet ein Zwischenblech befestigt ist. Das mehrere Funktionen ausübende Zwischenblech ist über eine Blattfeder mit der Anpressplatte der Trennkupplung ver bunden. Weiterhin kann das Zwischenblech eine Trägerfunktion für die Pendelmassen einer Fliehkraftpendeleinrichtung übernehmen. Die Gegendruckplatte zur Anpressplat te, zwischen denen die Kupplungsscheibe bzw. Mitnehmerscheibe der Trennkupplung geführt ist wird, bildet der Bogenfederflansch, der damit als thermische Masse nutzbar ist. According to the invention, the arc spring flange of the modular torsional vibration damper is extended radially on the inside and formed into a bearing dome which is supported on the primary part via a support bearing. Furthermore, the curved spring flange includes a torque pot aligned in the output direction and concentric to the axis of rotation, to which an intermediate plate, which can optionally be expanded to form a centrifugal pendulum device, is fastened with positive fit and play, which is in contact via a leaf spring with the pressure plate, which is in contact by means of a lever spring of the actuating device the clutch is axially displaceable. Preferably, the intermediate plate, also called the cover, is positively positioned axially on the torque cup via a toothing, with torque transmission from the arc spring flange always taking place via the torque cup to the intermediate plate and then via the leaf spring to the pressure plate. For this purpose, the arc spring flange is assigned a torque pot aligned in the output direction and concentrically to the axis of rotation, to which an intermediate plate is fastened in a form-fitting manner and with play. The intermediate plate, which performs several functions, is connected to the pressure plate of the separating clutch via a leaf spring. Furthermore, the intermediate plate can assume a support function for the pendulum masses of a centrifugal pendulum device. The counter-pressure plate to the Anpressplat te, between which the clutch disc or drive plate of the separating clutch is guided, forms the arc spring flange, which can thus be used as thermal mass.
Vorteilhaft bietet das erfindungsgemäße Konzept die Möglichkeit, den modulartig auf gebauten Drehschwingungsdämpfer zur Erzielung einer verbesserten Dämpfung mit geringem Aufwand durch eine Fliehkraftpendeleinrichtung zu erweitern. Der Dreh schwingungsdämpfer kann somit an unterschiedliche Antriebsstrang-Kombinationen angepasst werden, beispielsweise indem optional in Verbindung mit dem Zwischen blech ein Fliehkraftpendel realisierbar ist, um die Isolationsziele zu verbessern. Mit der Erfindung ist folglich ein baulich und gleichzeitig funktional verbesserter Drehschwin gungsdämpfer realisierbar, der einfach und kostengünstig herstellbar ist und keinen Mehraufwand bei der Montage erfordert. The inventive concept advantageously offers the possibility of expanding the modular torsional vibration damper to achieve improved damping with little effort by a centrifugal pendulum device. The torsional vibration damper can thus be adapted to different drive train combinations, for example in that a centrifugal pendulum can optionally be implemented in connection with the intermediate plate in order to improve the isolation goals. With the invention, a structurally and at the same time functionally improved torsional vibration damper can be realized, which is simple and inexpensive to manufacture and does not require any additional effort during assembly.
Gemäß einem bevorzugten Aufbau des erfindungsgemäßen Drehschwingungsdämp fers wird bei geöffneter Trennkupplung das Zwischenblech von einer Rückstellkraft der mit der Anpressplatte zusammenwirkenden Blattfeder beaufschlagt. Aufgrund des vorhandenen Einbauspiels zwischen dem Drehmomenttopf und dem Zwischenblech stellt sich dabei keine volle Performance ein. Im geöffneten Zustand der Trennkupp lung erfolgt üblicherweise der Antrieb des Flybridfahrzeugs ausschließlich über den Elektromotor, wobei die Brennkraftmaschine still steht. Bei geschlossener Trennkupplung verbunden mit einem Antrieb des Fahrzeugs durch die Brennkraftmaschine ist die mit der Betätigungseinrichtung zusammenwirkende, auch Tellerfeder genannte Hebelfeder über einen Drahtring und dem Zwischenblech kraftschlüssig an einem in einer Nut des Drehmomenttopfes eingesetzten Sicherungs ring abgestützt. Aufgrund dieser Anordnung ist das Zwischenblech zusätzlich reib schlüssig an den Drehmomenttopf abgestützt und somit gleichzeitig die vorhandene Fliehkraftpendeleinrichtung bedarfsgerecht an dem Drehmomenttopf angebunden. Vorteilhaft ermöglicht dieser konstruktive Aufbau eine einfache Montage sowie gege benenfalls auch eine einfache Demontage des Zwischenbleches ohne eine zusätzli che, spielfreie Stoff- oder formschlüssige Verbindung wie beispielsweise eine Schweiß- oder Nietverbindung. Für einen Brennkraftantrieb bildet die Fliehkraftpen deleinrichtung eine ergänzende Maßnahme zur Schwingungsdämpfung. According to a preferred construction of the torsional vibration damper according to the invention, when the separating clutch is disengaged, the intermediate plate is acted upon by a restoring force of the leaf spring cooperating with the pressure plate. Due to the existing installation clearance between the torque pot and the intermediate plate, full performance is not achieved. In the open state of the Trennkupp development, the flybridge vehicle is usually driven exclusively by the electric motor, with the internal combustion engine at a standstill. When the clutch is closed, connected to a drive of the vehicle by the internal combustion engine, the lever spring that interacts with the actuating device, also called a plate spring, is frictionally supported on a locking ring inserted in a groove of the torque cup via a wire ring and the intermediate plate. Due to this arrangement, the intermediate plate is additionally supported frictionally on the torque pot and thus at the same time the existing centrifugal pendulum device is connected to the torque pot as required. This structural design advantageously enables simple assembly and, if necessary, also simple dismantling of the intermediate plate without an additional, play-free material or form-fitting connection such as a welded or riveted connection. For an internal combustion engine, the Fliehkraftpen deleinrichtung forms a supplementary measure for vibration damping.
Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, dass in dem Zwischenblech, welches axial über einen endseitig an dem Drehmomenttopf befestigten Sicherungs ring fixiert ist, Kurvenbahnen für Laufrollen von Pendelmassen der Fliehkraftpen deleinrichtung eingebracht sind. Damit kann der Drehschwingungsdämpfer durch Hin zufügen der Pendelmassen, Laufrollen und Sicherungselemente mittels einer einfa chen Maßnahme durch eine Fliehkraftpendeleinrichtung ergänzt werden. An advantageous embodiment of the invention provides that cam tracks for running rollers of pendulum masses of the centrifugal pendulum are introduced into the intermediate plate, which is axially fixed via a locking ring attached to the end of the torque cup. The torsional vibration damper can thus be supplemented by a centrifugal pendulum device by adding the pendulum masses, rollers and securing elements by means of a simple measure.
Als Maßnahme zur Schaffung einer dauerfesten Befestigung ist vorgesehen, dass der Drehmomenttopf mit einem geschlossenen Blechring an dem Bogenfederflansch an liegt und mittels umlaufend positionierten Nietverbindungen befestigt ist. An dem Blechring schließen sich einseitig rechtwinkelig abgekantete, durch Längsschlitze ge trennte Abschnitte an, die durch Öffnungen im Bogenfederflansch geführt und im Ein bauzustand konzentrisch zu der Drehachse ausgerichtet sind. Im Einbauzustand ist der Drehmomenttopf in radialer Richtung an dem Zwischenblech abgestützt und damit bei hohen Drehzahlen und der damit verbundenen Fliehkraft wirksam vor einer Ver formung geschützt. Gemäß einer bevorzugten Ausführungsform ist zur Drehmomentübertragung von dem Zwischenblech auf die Anpressplatte zumindest eine Blattfeder vorgesehen. Vor zugsweise schließt dazu die Anpressplatte mehrere radial ausgerichtete, durch Längsschlitze von dem Drehmomenttopf geführte Laschen ein, an denen die Blattfe der befestigt ist. Die eine axiale Verschiebung der Anpressplatte ermöglichende Blatt feder bewirkt zudem eine Rückstellkraft für den Aktor der Betätigungseinrichtung der K0-Trennkupplung bei geöffneter Trennkupplung. As a measure to create a permanent fastening, it is provided that the torque pot rests against the arc spring flange with a closed sheet metal ring and is fastened by means of circumferentially positioned rivet connections. At the sheet metal ring close on one side, beveled at right angles, ge by longitudinal slots separated sections, which are guided through openings in the arc spring flange and aligned concentrically to the axis of rotation in the built-in state. In the installed state, the torque pot is supported in the radial direction on the intermediate plate and thus effectively protected against deformation at high speeds and the associated centrifugal force. According to a preferred embodiment, at least one leaf spring is provided for torque transmission from the intermediate plate to the pressure plate. To this end, the pressure plate preferably includes a plurality of radially aligned tabs guided through longitudinal slots by the torque pot, to which the Blattfe is attached. The leaf spring, which enables axial displacement of the pressure plate, also creates a restoring force for the actuator of the actuating device of the K0 separating clutch when the separating clutch is open.
Zur Betätigung der Trennkupplung eignet sich bevorzugt eine auch Concentric Slave Cylinder (CSC) genannte hydraulische Betätigungseinrichtung, bestehend aus einem hydrostatischen Nehmerzylinder, welcher über eine Hydraulikleitung mit einem Ge berzylinder verbunden ist, der mittels eines Kupplungspedals von einem Fahrer betä tigt wird. Der Nehmerzylinder umfasst ein als Wälzlager ausgeführtes Ausrücklager zugeordnet, welches unmittelbar über die Hebelfeder mit der Trennkupplung in Kon takt steht. Alternativ zu einer hydraulischen Betätigungseinrichtung ist die Erfindung übertragbar auf eine mechanische oder elektromechanische Betätigungseinrichtung. A hydraulic actuator, also known as a Concentric Slave Cylinder (CSC), consisting of a hydrostatic slave cylinder, which is connected via a hydraulic line to a master cylinder that is actuated by a driver by means of a clutch pedal, is preferably suitable for actuating the separating clutch. The slave cylinder is assigned a release bearing designed as a roller bearing, which is in contact with the separating clutch directly via the lever spring. As an alternative to a hydraulic actuating device, the invention can be transferred to a mechanical or electromechanical actuating device.
Als Maßnahme, um eine höhere Reibung innerhalb der Trennkupplung zwischen der Anpressplatte sowie dem als thermische Masse der Trennkupplung dienenden Bogen federflansch zu bekommen, an denen die auch Mitnehmerscheibe genannte Kupp lungsscheibe geführt ist, bietet es sich an, zumindest eine dieser Reibflächen zu profi lieren. Dazu kann die Reibfläche des Bogenfederflansches und/oder die Reibfläche der Anpressplatte bei Bedarf zur Erzielung einer höheren Reibung im Herstellungs prozess, beispielsweise beim Stanzvorgang oder falls nötig durch eine ergänzende spanende Bearbeitung angeraut oder profiliert werden. As a measure to get a higher friction within the separating clutch between the pressure plate and the arched spring flange serving as the thermal mass of the separating clutch, on which the clutch disc, also known as the drive plate, is guided, it is advisable to profi at least one of these friction surfaces. For this purpose, the friction surface of the arc spring flange and / or the friction surface of the pressure plate can be roughened or profiled if necessary to achieve higher friction in the manufacturing process, for example during the punching process or, if necessary, by additional machining.
Weiterhin bietet es sich an, den erfindungsgemäß aufgebauten Drehschwingungs dämpfer mit einem Berstschutz zu versehen. Dazu ist an einem Deckelelement des Primärteils ein die Fliehkraftpendeleinrichtung radial beabstandet umschließender zy lindrischer Schenkel angebracht, der beispielsweise im Schadensfall von der Flieh kraftpendeleinrichtung gelöste Pendelmassen zurückhält. Nachfolgend wird die Erfindung anhand von einer bevorzugten Ausführungsform unter Bezugnahme auf zwei beigefügte Figuren erläutert. Die Erfindung ist jedoch nicht auf die gezeigte Ausführungsform beschränkt. Gleiche bzw. wirkungsgleiche Bauteile sind in den Figuren mit den gleichen Bezugszeichen versehen. Dabei zeigen: Furthermore, it is advisable to provide the torsional vibration damper constructed according to the invention with a burst protection. For this purpose, a cylindrical leg enclosing the centrifugal pendulum device at a radial distance from one another is attached to a cover element of the primary part and, for example, retains pendulum masses released from the centrifugal pendulum device in the event of damage. The invention is explained below on the basis of a preferred embodiment with reference to two attached figures. However, the invention is not restricted to the embodiment shown. Components that are the same or have the same effect are provided with the same reference symbols in the figures. Show:
Fig. 1 einen Drehschwingungsdämpfer im Halbschnitt in einer ersten Ausfüh rungsform mit einer K0-Trennkupplung und einer variabel angebundenen Fliehkraftpendeleinrichtung; und Fig. 1 shows a torsional vibration damper in half section in a first Ausfüh approximately form with a K0 separating clutch and a variably connected centrifugal pendulum device; and
Fig. 2 das Detail Z aus der Fig. 1 in einer vergrößerten Darstellung. FIG. 2 shows the detail Z from FIG. 1 in an enlarged illustration.
In der Fig. 1 ist ein als Zweimassenschwungrad aufgebauter Drehschwingungsdämp fer 1 gezeigt, der vorzugsweise für einen Antriebsstrang eines Flybridfahrzeugs be stimmt ist, das als Antrieb eine Brennkraftmaschine und einen Elektromotor ein schließt, die nicht dargestellt sind. Der Drehschwingungsdämpfer 1 umfasst antriebs seitig ein mit der Brennkraftmaschine verschraubtes Primärteil 2 sowie ein mehrteili ges, einer Abtriebsseite zugeordnetes Sekundärteil 3, die gemeinsam um eine Dreh achse 4 drehbar und relativ zueinander verdrehbar angeordnet sind. Im Drehmoment fluss zwischen dem Primärteil 2 und dem Sekundärteil 3 ist eine Bogenfedern 5 ein schließende Federdämpfereinrichtung 6 angeordnet. Zur Drehmomentübertragung stützen sich die in einem vom Primärteil 2 und einem zugehörigen Deckelelement 7 begrenzten Federraum 8 eingesetzten Bogenfedern 6 einerseits an dem Primärteil 2 und andererseits an einem dem Sekundärteil 3 zugeordneten Bogenfederflansch 9 ab, der das Ausgangselement der Federdämpfereinrichtung 6 bildet. Die relative Verdre hung zwischen dem Primärteil 2 und dem Sekundärteil 3 ermöglicht ein als Wälzlager ausgeführtes Stützlager 10. Dazu ist der Bogenfederflansch 9 radial nach innen ver längert und zu einem Lagerdom 11 geformt, der mittels des Stützlagers 10 auf einer Tragschulter eines abgewinkelten Halters 12 abgestützt ist, der gemeinsam mit dem Primärteil 2 über Kurbelwellenschrauben 13 an einem Kurbelwellenflansch 14 befes tigt ist. Als Maßnahme, um den Federraum 8 der Federdämpfereinrichtung 5 abzu dichten, ist radial innenseitig beidseitig an dem Bogenfederflansch 9 ein Reibring 16, 17 abgestützt, der jeweils von einer Tellerfeder 18, 19 kraftbeaufschlagt ist, die ge- genseitig an dem Primärteil 2 bzw. dem Deckelelement 7 des Primärteils 2 abgestützt ist. In Fig. 1, a built as a two-mass flywheel Drehschwingungsdämp fer 1 is shown, which is preferably be true for a drive train of a flybridge vehicle, which includes an internal combustion engine and an electric motor as a drive, which are not shown. The torsional vibration damper 1 comprises on the drive side a primary part 2 screwed to the internal combustion engine and a multi-part secondary part 3 associated with an output side, which are arranged to be rotatable together about an axis of rotation 4 and rotatable relative to one another. In the torque flow between the primary part 2 and the secondary part 3, an arc spring 5, a closing spring damper device 6 is arranged. For torque transmission, the arc springs 6 inserted in a spring space 8 delimited by the primary part 2 and an associated cover element 7 are supported on the one hand on the primary part 2 and on the other hand on an arc spring flange 9 assigned to the secondary part 3, which forms the output element of the spring damper device 6. The relative rotation between the primary part 2 and the secondary part 3 enables a support bearing 10 designed as a roller bearing. For this purpose, the arc spring flange 9 is extended radially inward and formed into a bearing dome 11, which is supported by means of the support bearing 10 on a shoulder of an angled holder 12 is, which is taken together with the primary part 2 via crankshaft bolts 13 on a crankshaft flange 14 fasten. As a measure to seal the spring chamber 8 of the spring damper device 5, a friction ring 16, 17 is supported radially on the inside on both sides of the arc spring flange 9, each of which is acted upon by a disc spring 18, 19, which is is mutually supported on the primary part 2 and the cover element 7 of the primary part 2.
Weiterhin schließt der Drehschwingungsdämpfer 1 eine mit dem Bogenfederflansch 9 des Sekundärteils 3 verbundene KO-Trennkupplung 15 ein, die als Reibungskupplung ausgeführt ist. Die KO-Trennkupplung 15 umfasst einen an dem Bogenfederflansch 9 befestigten Drehmomenttopf 20, der dazu mit einem geschlossenen Blechring 22 an dem Bogenfederflansch 9 anliegt und mittels Nietverbindungen 41 befestigt ist. An dem Blechring 22 schließen sich rechtwinkelig abgekantete, durch Längsschlitze 31 getrennte Abschnitte an, die durch Öffnungen 21 im Bogenfederflansch 9 geführt sind. Furthermore, the torsional vibration damper 1 includes a KO separating clutch 15 which is connected to the arc spring flange 9 of the secondary part 3 and which is designed as a friction clutch. The KO separating clutch 15 comprises a torque pot 20 fastened to the arc spring flange 9, which for this purpose rests against the arc spring flange 9 with a closed sheet metal ring 22 and is fastened by means of riveted connections 41. The sheet metal ring 22 is joined by sections bent at right angles, separated by longitudinal slots 31, which are guided through openings 21 in the arc spring flange 9.
Auf einem in Abtriebsrichtung konzentrisch zu der Drehachse 4 ausgerichteten Ab schnitt des Drehmomenttopfes 20 ist formschlüssig über eine Verzahnung (nicht ge zeigt) ein optional zu einer Fliehkraftpendeleinrichtung 24 ausbaufähiges Zwischen blech 23 angeordnet ist, an dem beidseitig über Laufrollen geführte Pendelmassen 29 einer Fliehkraftpendeleinrichtung 24 angebracht werden können. Entsprechend sind in dem Zwischenblech 23, welches axial über einen endseitig an dem Drehmomenttopf 20 befestigten Sicherungsring 30 fixiert ist, Kurvenbahnen (nicht gezeigt) für die Lauf rollen der Pendelmassen 29 eingebracht. Als Berstschutz 40 für die Fliehkraftpen deleinrichtung 24 ist an dem Deckelelement 7 des Primärteils 2 ein die Fliehkraftpen deleinrichtung 24 radial beabstandet umschließendes abgewinkeltes Blech ange bracht. On a section of the torque pot 20 aligned concentrically to the axis of rotation 4 in the output direction, an intermediate plate 23, which can optionally be expanded to form a centrifugal pendulum device 24, is arranged in a form-fitting manner via a toothing (not shown), on which pendulum masses 29 of a centrifugal pendulum device 24 are attached on both sides via rollers can be. Correspondingly, cam tracks (not shown) for the running rollers of the pendulum masses 29 are introduced into the intermediate plate 23, which is axially fixed via a locking ring 30 attached to the end of the torque cup 20. As a burst protection 40 for the Fliehkraftpen deleinrichtung 24 is on the cover element 7 of the primary part 2, the Fliehkraftpen deleinrichtung 24 radially spaced enclosing angled sheet is introduced.
Über Blattfedern 25 (gezeigt in Fig. 2) steht das Zwischenblech 23 mit einer Anpress platte 26 in Kontakt, die mittels einer auch Tellerfeder genannten Hebelfeder 27 einer Betätigungseinrichtung 28 der KO-Trennkupplung 15 axial verschiebbar ist. Die An pressplatte 26 umfasst mehrere radial ausgerichtete, durch Längsschlitze 31 des Drehmomenttopfes 20 geführte Laschen 32, an denen die Blattfedern 25 befestigt sind. Die auch Concentric Slave Cylinder (CSC) genannte hydraulische Betätigungs einrichtung 28 schließt einen Nehmerzylinder 37 ein, welcher über eine Hydrauliklei tung mit einem Geberzylinder (nicht gezeigt) verbunden ist, der mittels eines Kupp lungspedals von einem Fahrer betätigt werden kann. Dem Nehmerzylinder 37 ist ein als Wälzlager ausgeführtes Ausrücklager 38 zugeordnet, welches unmittelbar mit der Hebelfeder 27 in einer Wirkverbindung steht. The intermediate plate 23 is in contact via leaf springs 25 (shown in FIG. 2) with a pressure plate 26, which is axially displaceable by means of a lever spring 27, also called a cup spring, of an actuating device 28 of the KO separating clutch 15. The pressure plate 26 comprises a plurality of radially aligned, guided through longitudinal slots 31 of the torque pot 20 brackets 32 to which the leaf springs 25 are attached. The hydraulic actuator 28 also called Concentric Slave Cylinder (CSC) includes a slave cylinder 37 which is connected via a hydraulic line to a master cylinder (not shown) which can be operated by a driver by means of a clutch pedal. The slave cylinder 37 is a assigned as a roller bearing release bearing 38, which is directly connected to the lever spring 27 in an operative connection.
Die auch Drehmomentpfad genannte Drehmomentübertragung verläuft von dem Bo genfederflansch 9 stets über den Drehmomententopf 20 zu dem auch Deckel genann ten Zwischenblech 23 und anschließend über zumindest eine Blattfeder 25 zu der An pressplatte 26. Zum Einrückten der K0-Trennkupplung 15 erfolgt über die Betäti gungseinrichtung 28 eine Krafteinleitung auf die Hebelfeder 27, wodurch sich die An pressplatte 26 axial in Richtung des Primärteils 2 verschiebt und dabei eine Kupp lungsscheibe 33 an eine Reibfläche des Bogenfederflansches 9 presst, wodurch ein Reibschluss für eine Drehmomentübertragung entsteht. Der Drehmomentpfad verläuft von der Kupplungsscheibe 33 in eine zugehörige Abtriebsnabe 34, deren Steckver zahnung 35 beispielsweise zur formschlüssigen Aufnahme einer Getriebeeingangs welle (nicht gezeigt) bestimmt ist. In der Fig. 1 ist die K0-Trennkupplung 15 im geöff neten Zustand gezeigt, in dem der Antrieb des Hybridfahrzeugs ohne Brennkraftma schine erfolgt. Dabei wird das Zwischenblech 23 mit einer Vorlastfederkraft der Blatt feder 25 gegen den einen Anschlag bildenden, am Drehmomenttopf 20 fixierten Si cherungsring 30 gedrückt, wobei aufgrund des vorhandenen Spiels zwischen Dreh momenttopf 20 und Zwischenblech 23 keine volle Performance erreichbar ist. Im ge schlossenen Zustand, bei betätigter K0-Trennkupplung 15 und laufender Brennkraft maschine, bei dem die Fliehkraftpendeleinrichtung 24 erforderlich ist, ist die Hebelfe der 27 über einen Drahtring 36 an dem Zwischenblech 23 abgestützt, der kraftschlüs sig mit hoher Kraft gegen den Sicherungsring 30 gedrückt wird. Damit ist das Zwi schenblech 23 zusätzlich reibschlüssig an den Drehmomenttopf 20 angebunden und somit gleichzeitig die Fliehkraftpendeleinrichtung 24 bedarfsgerecht mit dem Dreh momenttopf 20 verbunden. Diese Anordnung ermöglicht eine einfache Montage und ggfs. Demontage des Zwischenblechs 23 ohne eine zusätzliche, spielfreie Stoff- oder formschlüssige Verbindung. The torque transmission, also known as the torque path, always runs from the bow spring flange 9 via the torque pot 20 to the intermediate plate 23, also known as the cover, and then via at least one leaf spring 25 to the pressure plate 26 a force application to the lever spring 27, whereby the pressure plate 26 moves axially in the direction of the primary part 2 and thereby a clutch disc 33 presses against a friction surface of the arc spring flange 9, creating a frictional connection for torque transmission. The torque path runs from the clutch disk 33 into an associated output hub 34, the plug-in toothing 35 of which is intended, for example, for the form-fitting reception of a transmission input shaft (not shown). In Fig. 1, the K0 separating clutch 15 is shown in the geöff designated state in which the drive of the hybrid vehicle takes place without internal combustion engine. The intermediate plate 23 is pressed with a preload spring force of the leaf spring 25 against the stop forming a stop, fixed to the torque pot 20 Si cherungsring 30, with due to the existing game between torque pot 20 and intermediate plate 23 no full performance can be achieved. In the closed state, with the K0 separating clutch 15 actuated and the internal combustion engine running, in which the centrifugal pendulum device 24 is required, the Hebelfe 27 is supported by a wire ring 36 on the intermediate plate 23, which is force-locked against the locking ring 30 becomes. So that the inter mediate sheet 23 is additionally frictionally connected to the torque pot 20 and thus at the same time the centrifugal pendulum device 24 connected to the torque pot 20 as needed. This arrangement enables simple assembly and, if necessary, dismantling of the intermediate plate 23 without an additional, play-free material or form-fitting connection.
Die Fig. 2 verdeutlicht durch eine größere Darstellung das an dem Sicherungsring 30 abgestützte Zwischenblech 23 sowie die durch Längsschlitze 31 des Drehmomenttop fes 20 geführten Laschen 32 der Anpressplatte 26. Weiterhin ist die Einbaulage des Drahtrings 36 gezeigt, der von der Hebelfeder 27 kraftbeaufschlagt an der vom Siche rungsring 30 abgewandten Seite am Zwischenblech 23 abgestützt ist. Außerdem zeigt die Fig. 2 die mittels Nietverbindungen 39 an dem Zwischenblech 23 befestigte Blatt feder 25. 2 clarifies the intermediate plate 23 supported on the securing ring 30 and the tabs 32 of the pressure plate 26, which are guided through the longitudinal slots 31 of the torque top 20, in a larger representation Wire ring 36 is shown, which is supported by force from the lever spring 27 on the side facing away from the hedging ring 30 on the intermediate plate 23. In addition, FIG. 2 shows the leaf spring 25 fastened to the intermediate plate 23 by means of riveted connections 39.
Bezuqzeichenliste Drehschwingungsdämpfer Primärteil Sekundärteil Drehachse Bogenfeder Federdämpfereinrichtung Deckelelement Federraum Bogenfederflansch Stützlager Lagerdom Halter Kurbelwellenschrauben Kurbelwellenflansch Trennkupplung Reibring Reibring Tellerfeder Tellerfeder Drehmomenttopf Öffnung Blechring Zwischenblech Fliehkraftpendeleinrichtung Blattfeder Anpressplatte Hebelfeder Betätigungseinrichtung Pendelmasse Sicherungsring Längsschlitz Lasche Kupplungsscheibe Abtriebsnabe Steckverzahnung Drahtring Nehmerzylinder Ausrücklager Nietverbindung Berstschutz Nietverbindung Bezuqzeichenliste Torsional vibration damper primary part secondary part axis of rotation arc spring spring damper device cover element spring chamber arc spring flange support bearing bearing dome holder crankshaft screws crankshaft flange disconnecting clutch friction ring friction ring disc spring disc spring torque pot opening sheet metal ring intermediate plate centrifugal pendulum device leaf spring pressure plate lever spring actuating device pendulum mass locking ring longitudinal slot Bracket clutch disc output hub spline wire ring slave cylinder release bearing rivet connection burst protection rivet connection

Claims

Patentansprüche Claims
1. Drehschwingungsdämpfer (1 ), der in einen Antriebsstrang eines Hybridfahr zeugs einsetzbar und als Zweimassenschwungrad aufgebaut ist, und der ein Primärteil (2) und ein mehrteiliges Sekundärteil (3) umfasst, die um eine Dreh achse (4) relativ zueinander verdrehbar angeordnet sind, sowie eine Fe derdämpfereinrichtung (6) einschließt, welche Drehschwingungen des Primär teils (2) und/oder des Sekundärteils (3) dämpft, weiterhin umfasst der Dreh schwingungsdämpfer (1) eine Trennkupplung (15), welche einem Bogenfeder flansch (9) des Sekundärteils (3) zugeordnet ist und die eine Betätigungsein richtung (28) einschließt sowie eine zwischen einer axial verschiebbaren An pressplatte (26) und dem Bogenfederflansch (9) eingesetzte Kupplungsscheibe (33), dadurch gekennzeichnet, dass der Bogenfederflansch (9) des modulartig aufgebauten Drehschwingungsdämpfers (1) radial innenseitig über ein Stützla ger (10) an dem Primärteil (2) abgestützt ist und an dem Bogenfederflansch (9) ein in Abtriebsrichtung und konzentrisch zu der Drehachse (4) ausgerichteter Drehmomenttopf (20) befestigt ist, an dem formschlüssig und spielbehaftet ein Zwischenblech (23) befestigt ist, welches über eine Blattfeder (25) mit der An pressplatte (26) in Kontakt steht, die mittels einer Hebelfeder (27) der Trenn kupplung (15) axial verschiebbar ist. 1. Torsional vibration damper (1), which can be used in a drive train of a hybrid vehicle and is constructed as a dual-mass flywheel, and which comprises a primary part (2) and a multi-part secondary part (3) which are arranged so that they can be rotated relative to one another about an axis of rotation (4) , as well as a spring damper device (6) which dampens torsional vibrations of the primary part (2) and / or of the secondary part (3), furthermore the torsional vibration damper (1) comprises a separating clutch (15) which is attached to an arc spring flange (9) of the Secondary part (3) is assigned and which includes an actuating device (28) and a clutch disc (33) inserted between an axially displaceable pressure plate (26) and the arc spring flange (9), characterized in that the arc spring flange (9) of the modular structure Torsional vibration damper (1) is supported radially on the inside via a Stützla ger (10) on the primary part (2) and on the arc spring flange (9) an in Abtriebsric Attention and concentrically to the axis of rotation (4) aligned torque pot (20) is attached, to which an intermediate plate (23) is attached in a form-fitting manner and with play, which is in contact via a leaf spring (25) with the pressure plate (26), which by means of a lever spring (27) of the separating clutch (15) is axially displaceable.
2. Drehschwingungsdämpfer (1) nach Anspruch 1, dadurch gekennzeichnet, dass bei geöffneter Trennkupplung (15) das Zwischenblech (23) von einer Rückstell kraft der mit der Anpressplatte (26) zusammenwirkenden Blattfeder (25) beauf schlagt ist. 2. Torsional vibration damper (1) according to claim 1, characterized in that when the separating clutch (15) is open, the intermediate plate (23) is acted upon by a restoring force of the leaf spring (25) cooperating with the pressure plate (26).
3. Drehschwingungsdämpfer (1 ) nach Anspruch 1 oder 2, dadurch gekennzeich net, dass bei geschlossener Trennkupplung (15) die mit der Betätigungseinrich tung (28) zusammenwirkende Hebelfeder (27) über einen Drahtring (36) und das Zwischenblech (23) kraftschlüssig an einem Sicherungsring (30) des Drehmomenttopfes (20) abgestützt ist. 3. Torsional vibration damper (1) according to claim 1 or 2, characterized in that when the separating clutch (15) is engaged with the actuating device (28) cooperating lever spring (27) via a wire ring (36) and the intermediate plate (23) frictionally a locking ring (30) of the torque pot (20) is supported.
4. Drehschwingungsdämpfer (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in dem Zwischenblech (23) Kurvenbahnen für Laufrollen von Pendelmassen (29) der Fliehkraftpendeleinrichtung (24) einge bracht sind. 4. Torsional vibration damper (1) according to one of the preceding claims, characterized in that in the intermediate plate (23) cam tracks for rollers of pendulum masses (29) of the centrifugal pendulum device (24) are introduced.
5. Drehschwingungsdämpfer (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Drehmomenttopf (20) mit einem geschlos senen Blechring (22) an dem Bogenfederflansch (9) anliegt und mittels Niet verbindungen (41) befestigt ist und der Blechring (22) durch Öffnungen (21) im Bogenfederflansch (9) geführte, rechtwinkelig ausgerichtete, durch Längsschlit ze (31) getrennte Abschnitte einschließt. 5. Torsional vibration damper (1) according to one of the preceding claims, characterized in that the torque pot (20) rests with a closed sheet metal ring (22) on the arc spring flange (9) and is fastened by means of rivet connections (41) and the sheet metal ring (22) ) through openings (21) in the arc spring flange (9) guided, at right angles, by longitudinal slits ze (31) includes separate sections.
6. Drehschwingungsdämpfer (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zur Drehmomentübertragung von dem Zwi schenblech (23) auf die Anpressplatte (26) mehrere Blattfedern (25) vorgese hen sind, wobei die Anpressplatte (26) über radial ausgerichtete, durch Längs schlitze (31) des Drehmomenttopfes (20) geführte Laschen (32) mit den Blatt federn (25) verbunden ist. 6. Torsional vibration damper (1) according to one of the preceding claims, characterized in that several leaf springs (25) are provided for the transmission of torque from the intermediate plate (23) to the pressure plate (26), the pressure plate (26) via radially aligned, through longitudinal slots (31) of the torque pot (20) guided tabs (32) with the leaf springs (25) is connected.
7. Drehschwingungsdämpfer (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Drehmomenttopf (20) im Einbauzustand in radialer Richtung an dem Zwischenblech (23) abgestützt ist. 7. Torsional vibration damper (1) according to one of the preceding claims, characterized in that the torque pot (20) in the installed state is supported in the radial direction on the intermediate plate (23).
8. Drehschwingungsdämpfer (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein mechanisches, elektromechanisches oder ein hydraulisches Einrücksystem als Betätigungseinrichtung (28) für die K0- Trennkupplung (15) vorgesehen ist. 8. Torsional vibration damper (1) according to one of the preceding claims, characterized in that a mechanical, electromechanical or a hydraulic engagement system is provided as the actuating device (28) for the K0 separating clutch (15).
9. Drehschwingungsdämpfer (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Reibfläche des Bogenfederflansches (9) und/oder eine Reibfläche der Anpressplatte (26) zur Erzielung einer höheren Reibung angeraut und/oder profiliert ist. 9. Torsional vibration damper (1) according to one of the preceding claims, characterized in that a friction surface of the arc spring flange (9) and / or a friction surface of the pressure plate (26) is roughened and / or profiled to achieve higher friction.
10. Drehschwingungsdämpfer (1 ) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an einem Deckelelement (7) des Primärteils (2) ein die Fliehkraftpendeleinrichtung (24) radial beabstandet umschließender Berstschutz (40) vorgesehen ist. 10. Torsional vibration damper (1) according to one of the preceding claims, characterized in that a burst protection (40) surrounding the centrifugal pendulum device (24) at a radial distance from one another is provided on a cover element (7) of the primary part (2).
PCT/DE2020/100858 2019-10-17 2020-10-05 Torsional vibration damper WO2021073684A1 (en)

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DE112020005144.7T DE112020005144A5 (en) 2019-10-17 2020-10-05 torsional vibration damper
CN202080070757.1A CN114502857A (en) 2019-10-17 2020-10-05 Torsional vibration damper

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WO2021073683A1 (en) 2021-04-22
CN114502857A (en) 2022-05-13

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