WO2019192658A1 - Amortisseur pour un embrayage à friction et embrayage à friction - Google Patents

Amortisseur pour un embrayage à friction et embrayage à friction Download PDF

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Publication number
WO2019192658A1
WO2019192658A1 PCT/DE2019/100298 DE2019100298W WO2019192658A1 WO 2019192658 A1 WO2019192658 A1 WO 2019192658A1 DE 2019100298 W DE2019100298 W DE 2019100298W WO 2019192658 A1 WO2019192658 A1 WO 2019192658A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotation
damper
friction clutch
input part
leaf spring
Prior art date
Application number
PCT/DE2019/100298
Other languages
German (de)
English (en)
Inventor
Sebastian Heuberger
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
Publication of WO2019192658A1 publication Critical patent/WO2019192658A1/fr

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
    • 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
    • F16F15/121—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 using springs as elastic members, e.g. metallic springs
    • F16F15/1215—Leaf springs, e.g. radially extending
    • 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
    • F16F15/1204—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 with a kinematic mechanism or gear system
    • F16F15/1205—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 with a kinematic mechanism or gear system with a kinematic mechanism, i.e. linkages, levers
    • 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

Definitions

  • the present invention relates to a damper for a friction clutch, in particular for a drive train of a motor vehicle, and a corresponding Reibkupp- ment.
  • Couplings are used in motor vehicles in the drive train to transmit torque between two elements that are not permanently operated at the same speed, but where it is necessary to connect or disconnect them depending on the situation.
  • centrifugal clutches are known gene, for example, from DE 10 2016 204 111 or DE 10 2016 211 217, in which rotational speed dependent centrifugal weights by the centrifugal - be deflected radially outward force, be used to impart a frictional connection. Due to the centrifugal weights to be used, it is often not possible to use standard known vibration dampers for suppressing unwanted oscillation frequencies in a small space.
  • the object of the present invention is to at least partially overcome the problems known from the state of the art and in particular to provide a damper which permits damping of unwanted vibrations even in a small space.
  • the damper according to the invention for a friction clutch in particular for a friction clutch for a drive train of a motor vehicle, with an input part arranged about an axis of rotation and an input part about the rotation axis limited against the action of a spring device rotatable output part, characterized in that the Spring device comprises at least one leaf spring, which are connected by a first rotation element to the input part and a second rotation element with the output part, wherein the first and second rotation element are freely rotatably formed in each case a recess of the leaf spring, wherein the first rotation element on a first circular path is movable about the axis of rotation and on a second circular path about the first rotary element.
  • the input part and the output part of the damper are thus connected to one another via at least one leaf spring, preferably at least two, particularly preferably three leaf springs. If there is a relative rotation of the output part to the input part, this results in a deflection and extension of the leaf spring due to the movement of the first rotation element both on the first circular path and on the second circular path. This leads to a restoring force in the leaf spring, which counteracts the deflection and leads to a return, so that the starting part and the input part rotate uniformly again.
  • the embodiment with leaf springs leads to a very flat construction of the damper in the direction of the axis of rotation, so that such a damper can also be realized in small construction spaces, such as in motorcycles.
  • the damper further comprises at least one centrifugal weight, which is limited in a radial direction with respect to the axis of rotation movable.
  • the design with at least one centrifugal weight, which is movable in the radial direction, allows the configuration of a so-called centrifugal force coupling, in which frictional engagement between friction partners can be enabled or released by the centrifugal weights, which depend on the rotational speed.
  • the output part can be connected to a hub.
  • torque can be transmitted to the hub via the damper and successively to a shaft connected to the hub.
  • This is preferably a transmission input shaft of a downstream transmission.
  • the at least one leaf spring is designed such that it applies a restoring force when a distance between the first and the second rotation element increases.
  • the rotation elements in the leaf spring Due to the movable mounting of the rotation elements in the leaf spring they can be deflected gegapt.
  • the first rotational element will move relative to the second rotational element on the first circular path in the circumferential direction.
  • this leads to an extension of the connection between the first rotation element and the second rotation element, which is evident in the extension of the leaf spring between the rotation elements.
  • this extension moves in the context of the Hooke's range of the respective leaf spring, so that a restoring force is generated which counteracts the extension of the leaf spring and wants to shorten it again to the original distance ,
  • a restoring force is generated which counteracts the extension of the leaf spring and wants to shorten it again to the original distance .
  • a friction clutch comprising at least one damper as described here.
  • the input part has a carrier for at least one friction element.
  • the carrier may in particular be a plate carrier on which friction elements for connection to a counterpressure plate for generating a friction plate Final can be connected to the interruptible transmission of torque.
  • damper can be applied and applied to the friction clutch and the motor vehicle, and vice versa.
  • Fig. 1 is a view of a section of an example of a friction clutch
  • 3 shows a second view of a part of a damper; 4 shows a section of the damper;
  • Fig. 7 an example of a damper characteristic.
  • 1 shows schematically a detail of an example of a friction clutch 1 with a damper 2. This has an output part 3 and an input part 4.
  • the output part 3 is arranged about a rotation axis d.
  • the input part 4 is limited in relation to the output part 3 against the action of a spring device 5 about the rotation axis d rotatable.
  • the spring device 5 comprises in this example three leaf springs 6, which are each connected to a first rotary member 7 with the output part 3 and a second rotary member 8 with the input part 4, wherein first 7 and second rotary member 8 freely rotatable in each case a recess the respective leaf spring 3 are formed.
  • the damper 2 also has centrifugal weights 9, which are movable in the radial direction 10 depending on centrifugal force. These can be used for speed-dependent actuation of the friction clutch.
  • the output part 3 further has a carrier (disk carrier) 11, via which friction partner of the friction clutch can be connected to the output part 3.
  • a detachable frictional connection with another friction partner can be produced by means of these, so that torque can be transmitted, for example, from the crankshaft of an engine.
  • Fig. 2 shows the input part 4 of the friction clutch 1 with leaf springs 6, first rotation elements 7 and second rotation elements 8 in a perspective view, Fig. 3 in a front view.
  • the first rotary element 7 is on the one hand movable on a first circular path 12 about the axis of rotation d and on the other hand on a second circular path 13 about the second rotary element 8.
  • the first circular path 12 has a first radius 14 and the second circular path 13 a second radius 15, which is different from the first radius 14.
  • the first center 16 of the first circular path 12 lies on the axis of rotation d, while the second center 17 is located in the center of the second rotary element 8.
  • the first rotational element 7 is deflected on both circular paths 12, 13 due to the different radii 14 , 15 of the circular paths 12, 13 about different centers 16, 17 there is a change in a distance 18 between the first 7 and second rotation elements 8.
  • a restoring force acts on the leaf spring 6, which dampens the non-uniform rotation and would like to achieve a uniform rotation of the output part 3 and input part 4 again.
  • FIG. 4 shows a detail of the connection of leaf spring 6 and output part 3 via the first rotary element 7 on the one hand and leaf spring 6 and input part 4 via the second rotary element 8 on the other hand.
  • the first rotation element 7 can rotate freely in a first recess 19 of the leaf spring 6 and the second rotation element 8 can rotate freely in a second recess 20 of the leaf spring 6.
  • the first rotation element 7 is connected to the output part 3 such that it can also rotate relative to the output part 3, but this is fixed in the direction of the rotation axis d with the leaf spring 6.
  • the second rotation element 8 can rotate freely with respect to the input part 4, but blocks movement of the leaf spring 6 relative to the input part 4 in the direction of the rotation axis d.
  • FIG. 4 further shows a bearing 21, via which the input part 4 of the dampers 2 is mounted on a shaft (not shown), for example a transmission input shaft.
  • FIGS. 5 and 6 show the change in the distance 18 between the first rotary element 7 and the second rotary element 8 in detail.
  • FIGS. 5 and 6 show a change in length 22 of the distance 18 between the first rotational element 7 and the second rotational element 8 as a function of a deflection angle 23 on the second circular path 13 about the second center 17.
  • Fig. 7 shows an example with the; Damper 2 achievable damper characteristic 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

L'invention concerne un amortisseur (2) pour un embrayage à friction (1), en particulier pour un embrayage à friction (1) pour une chaîne cinématique d'un véhicule automobile, pourvu d'une pièce d'entrée (4) agencée autour d'un axe de rotation (d) et d'une pièce de sortie (3) pouvant tourner par rapport à la pièce d'entrée (4) autour de l'axe de rotation (d) de manière limitée dans le sens contraire de l'action d'un équipement de ressort (5). L'invention se caractérise en ce que l'équipement de ressort (5) comprend au moins un ressort à lames (6) qui est relié par un premier élément de rotation (7) à la pièce d'entrée (4) et par un deuxième élément de rotation (8) à la pièce de sortie (3), le premier élément de rotation (7) et le deuxième élément de rotation (8) étant conçus de manière à pouvoir tourner librement chacun dans un orifice (19, 20) du ressort à lames (6), le premier élément de rotation (7) étant mobile sur une première voie circulaire (12) autour de l'axe de rotation (d) et sur une deuxième voie circulaire (13) autour du deuxième élément de rotation (8).
PCT/DE2019/100298 2018-04-05 2019-04-01 Amortisseur pour un embrayage à friction et embrayage à friction WO2019192658A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018108039.5 2018-04-05
DE102018108039.5A DE102018108039B3 (de) 2018-04-05 2018-04-05 Dämpfer für eine Reibkupplung sowie Reibkupplung

Publications (1)

Publication Number Publication Date
WO2019192658A1 true WO2019192658A1 (fr) 2019-10-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2019/100298 WO2019192658A1 (fr) 2018-04-05 2019-04-01 Amortisseur pour un embrayage à friction et embrayage à friction

Country Status (2)

Country Link
DE (1) DE102018108039B3 (fr)
WO (1) WO2019192658A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19943036A1 (de) * 1999-09-09 2001-03-15 Mannesmann Sachs Ag Antriebssystem
DE102013201269A1 (de) * 2012-02-17 2013-09-05 Schaeffler Technologies AG & Co. KG Reibungskupplung mit Fliehkraftpendel
DE102013226053A1 (de) * 2013-12-16 2015-06-18 Volkswagen Aktiengesellschaft Verbindungselement
DE102016204111A1 (de) 2016-03-14 2017-09-14 Schaeffler Technologies AG & Co. KG Reibungskupplung
DE102016211217B3 (de) 2016-06-23 2017-12-14 Schaeffler Technologies AG & Co. KG Fliehkraftkupplung mit reibungsminimiertem Koppelbolzen und Antriebsstrang

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19914871C2 (de) * 1999-04-01 2003-06-12 Freudenberg Carl Kg Drehzahladaptiver Schwingungstilger
GB0111616D0 (en) * 2001-05-12 2001-07-04 Automotive Products Uk Ltd Driven plate for friction clutch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19943036A1 (de) * 1999-09-09 2001-03-15 Mannesmann Sachs Ag Antriebssystem
DE102013201269A1 (de) * 2012-02-17 2013-09-05 Schaeffler Technologies AG & Co. KG Reibungskupplung mit Fliehkraftpendel
DE102013226053A1 (de) * 2013-12-16 2015-06-18 Volkswagen Aktiengesellschaft Verbindungselement
DE102016204111A1 (de) 2016-03-14 2017-09-14 Schaeffler Technologies AG & Co. KG Reibungskupplung
DE102016211217B3 (de) 2016-06-23 2017-12-14 Schaeffler Technologies AG & Co. KG Fliehkraftkupplung mit reibungsminimiertem Koppelbolzen und Antriebsstrang

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