WO2014023303A1 - Pendule à force centrifuge et embrayage à friction à pendule à force centrifuge - Google Patents

Pendule à force centrifuge et embrayage à friction à pendule à force centrifuge Download PDF

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Publication number
WO2014023303A1
WO2014023303A1 PCT/DE2013/200066 DE2013200066W WO2014023303A1 WO 2014023303 A1 WO2014023303 A1 WO 2014023303A1 DE 2013200066 W DE2013200066 W DE 2013200066W WO 2014023303 A1 WO2014023303 A1 WO 2014023303A1
Authority
WO
WIPO (PCT)
Prior art keywords
pendulum
centrifugal
guide
masses
damping
Prior art date
Application number
PCT/DE2013/200066
Other languages
German (de)
English (en)
Inventor
Uli Junker
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 DE201311003910 priority Critical patent/DE112013003910A5/de
Publication of WO2014023303A1 publication Critical patent/WO2014023303A1/fr

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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
    • F16F15/14—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 invention relates to a centrifugal pendulum for speed-dependent torsional vibration damping of a torque transfer device, in particular a friction clutch, with several pendulum masses, with at least one guide device defining at least one guide plane along which the pendulum masses are movably guided by means of at least one slotted guide on a respective path, and with damping elements for Impact absorption of an impact of the respective pendulum mass when reaching the end positions on its path.
  • the invention further relates to a friction clutch with a corresponding centrifugal pendulum.
  • centrifugal pendulum for speed-dependent torsional vibration damping within a friction clutch.
  • the centrifugal pendulum mass comprises a plurality of pendulum masses, at least one guide device defining a guide plane along which the pendulum masses are movably guided on a track by means of a slotted guide and the guide rollers, and damping elements for impact damping upon reaching the end position of the pendulum masses on their tracks.
  • the guide device is designed as a central guide flange in the form of a circular disk whose flanks form the guide surfaces for the pendulum masses.
  • the slide guide is formed by slide recesses in the guide flange and further slide recesses in the pendulum masses, in which the guide rollers can roll off or roll off.
  • the pendulum masses are designed as two-piece pendulum masses whose sub-masses are connected to each other by means of stepped bolts.
  • the stepped bolts pass through the guide flange by means of corresponding recesses which correspond to the slide recesses in the guide flange for the rollers.
  • the damping elements are designed as sheaths of central portions of the stepped bolt.
  • the middle sections are the sections of the stepped bolts which engage in the corresponding sliding recesses for the guide device.
  • the respective sheath is made of an elastic, damping plastic material.
  • the recesses for the stepped bolts in the guide means designed as a guide means must be made relatively wide, which is unfavorable for the strength of the guide means.
  • the damping elements are arranged with respect to the axis of rotation of the centrifugal pendulum pendulum ends of the pendulum masses.
  • the damping element can interact with a stop element of the guide device or with a peripheral end of another pendulum mass for impact damping.
  • damping elements Due to the arrangement of the damping elements at the ends of the pendulum masses, the following advantages arise: Other types of damping elements, such as the known from the prior art shells of bolts of pendulum masses can be omitted.
  • the damping elements according to the invention are mounted directly on the ends of the pendulum masses, which has the advantage that the pendulum masses are made particularly long and / or heavy, since they are damped in mutual striking by the damping elements. Stop noise is also effectively reduced since one pendulum mass in each case is "decelerated" by the pendulum mass lying next to it, and the small gap additionally favors this.
  • one of the damping elements particularly preferably each of the
  • Damping elements an elastomeric material on.
  • the damping element can also consist entirely of elastomeric material.
  • the elastomeric material is especially rubber.
  • the damping elements made of elastomeric material are preferably cast (e.g., by injection molding).
  • one of the damping elements is fastened in a material-locking and / or form-fitting manner to one of the peripheral ends of the respective pendulum mass.
  • the cohesive attachment is preferably a vulcanization and / or a bond.
  • the Dämfungs comprise spring elements.
  • Spring elements are attached as separate elements at the ends or formed by machining a pendulum mass blank in one piece with the pendulum mass at the circumferential end in).
  • the respective pendulum ends themselves are made elastic, e.g. meandering laser / water jet cuts or the like are attached.
  • the pendulum masses are circumferentially distributed with respect to the axis of rotation of the centrifugal pendulum.
  • each of the pendulum masses has a damping element at exactly one circumferential end.
  • the pendulum masses are made in two parts and the guide device is designed as a central guide flange, the lateral flanks each forms one of the guide planes along which the two-part pendulum masses are guided with its two masses on both sides of the guide flange.
  • the pendulum masses correspond - except for the damping elements - essentially the pendulum masses of the centrifugal pendulum (FKP) shown in the above-mentioned document DE 10 2006 028 556 A1.
  • FKP centrifugal pendulum
  • each of the two-part pendulum masses is attached to the one circumferential end of one of the damping elements on one part of the mass and at the other circumferential end of the damping elements on the other part mass.
  • the slide guide is formed by KulissenausEnglishache in the guide means and other KulissenausappelInstitut in the pendulum masses, the guide means take guide rollers for guiding the pendulum masses on their respective pendulum tracks.
  • the friction clutch according to the invention for coupling a drive shaft of a
  • Motor vehicle engine with at least one transmission input shaft comprises (a) a counterplate te, (b) a relatively displaceable to the counter-plate pressure plate for pressing a clutch disc between the counter-plate and the pressure plate and (c) at least one connected to the counter-plate and / or a clutch cover centrifugal pendulum, which is designed as above-mentioned centrifugal pendulum.
  • the centrifugal pendulum can be attached to any rotatably mounted transmission element of the friction clutch.
  • the friction clutch on a flywheel which encompasses the centrifugal pendulum or at least carries and further also forms the counter-plate.
  • the flywheel is designed as a dual mass flywheel with a primary mass and a secondary mass.
  • the at least one centrifugal pendulum is attached to the secondary mass.
  • Pendulum masses circumferentially distributed with respect to the axis of rotation of the friction clutch. If the centrifugal pendulum is carried by the flywheel, the pendulum masses are arranged circumferentially distributed on the flywheel.
  • FIG. 1 is a side view of a centrifugal pendulum with guide flange and attached two-piece pendulum masses according to an embodiment of the invention
  • FIG. 3 shows an end region of a pendulum mass for a centrifugal pendulum of FIG. 1 according to a first embodiment
  • FIG. 4 shows an end region of a pendulum mass for a centrifugal pendulum of FIG. 1 according to a second embodiment
  • FIG. 5 shows an end region of a pendulum mass for a centrifugal pendulum of Fig. 1 according to a third embodiment
  • Fig. 6 is a schematic sectional view through one of the two-piece pendulum masses of the centrifugal pendulum of Fig. 1 along the line Vl-Vl and
  • Fig. 7 is a schematic sectional view through a guide flange and several of the two-piece pendulum masses of the centrifugal pendulum of Fig. 1 along the line VII-VII.
  • Fig. 1 shows a centrifugal pendulum 10 for speed-dependent torsional vibration damping of a friction clutch or other torque transmitting device.
  • the centrifugal pendulum 10 has a trained as a central guide flange 12 guide means 14 which carries a plurality of pendulum masses 16 of the centrifugal pendulum 10 and defines two parallel guide planes along which the pendulum masses 16 are movably guided by link guides 18 on respective (pendulum) paths.
  • the central guide flange 12 has the shape of a circular disk and carries in the example shown in FIG. 1 four pendulum masses 16.
  • the pendulum masses 16 are made in two parts and have two interconnected sub-masses 20, 22, but together only in Figures 6 and 7 shown are. In the side views of Figures 1 to 5 each only one of the two sub-masses 20, 22 visible.
  • the slotted guides 18 are formed by slide recesses 24 in the guide device 14 and further slide recesses 26 in the pendulum masses 16 in which guide rollers 28 of the slotted guide 18 can roll or roll.
  • Per pendulum mass 16 two guide rollers 28 are provided.
  • Each of the pendulum masses 16 has a contour in side view which approximately corresponds to a circular disk sector and two with respect to the axis of rotation 34 of the centrifugal pendulum 10 has circumferential ends 30, 32.
  • the pendulum masses 16 are circumferentially distributed with respect to the axis of rotation 34 of the centrifugal pendulum 10, and the central axis of the circular disc, so that the peripheral ends 30, 32 of adjacent pendulum masses 16 are opposed to each other, but have a certain distance. Between the respective adjacent pendulum masses 16 thus forms a gap.
  • Each of the pendulum masses 16 has a damping element 36 on at least one of the peripheral ends 30. This respective damping element 36 is a damping element for impact absorption of an impact of the respective pendulum mass 16 when reaching the end positions on their (pendulum) path.
  • the damping element 36 cooperates with the respective other peripheral end 32 of the adjacent pendulum mass 16 and forms with the ends 30, 32 a respective end stop for the two adjacent pendulum masses 16. This has the advantage that the space is optimally utilized and the pendulum masses particularly can be tall and heavy.
  • the damping elements 36 at the ends 30, 32 are the only damping elements for impact damping of the pendulum masses 16. There are no other damping elements for this purpose.
  • the damping elements 36 of Figures 1 to 4, 6 and 7 are damping elements made of an elastomeric material, such as rubber.
  • the damping elements 36 are, for example, firmly bonded to the respective peripheral ends 30 of the pendulum masses 16.
  • the damping elements 36 are attached by means of vulcanization and / or gluing at the end 30.
  • the two sub-masses 20, 22 of the two-part pendulum masses 16 are connected to each other by means of connecting bolts 40.
  • connecting bolts 40 In the example shown, three connecting bolts 40 per pendulum mass 16 are provided.
  • the connection by means of the bolts 40 is preferably a riveted joint.
  • the connecting bolts 40 are accordingly rivet bolts.
  • Fig. 2 shows a part of the guide flange 14 formed as a guide device 14 with parts of the attached two-piece pendulum mass 16.
  • the arranged in front of the guide flange 12 part mass 20 is removed and gives the view free on the guide rollers 28, sections of the behind the guide flange 12th lying partial mass 22, the connecting pin 40 for connecting the two sub-masses 20, 22 and the Kulissenaus fundamentalun- gene 24, 26 for the rollers 28 and corresponding recesses 42 for the connecting pin 40.
  • Similar to the rollers 28 namely pass through the bolts 40 the guide flange 12th through the corresponding recesses 42.
  • no elastic sheath is provided, because the damping elements are yes to at least one the ends 30, 32 of the respective pendulum mass provided. This allows the corresponding recesses 42 (compared to the situation described in the prior art in the prior art) to be narrow, which increases the flange strength of the guide flange 12.
  • FIGS. 3 to 5 each show a peripheral end 30, 32 of a pendulum mass 16 (or a circumferential end of a partial mass 20, 22) with a damping element 36 disposed thereon in detail.
  • a bolt 40 and a part of the edge of the further ball recess 26 can be seen.
  • the damping element 36 of FIG. 3 is positively secured (and optionally also materially bonded) to the corresponding end 30, 32.
  • the damping element 36 of FIG. 4 is firmly bonded to the corresponding end 30, 32 and formed as an elastic cap.
  • the damping element 36 of FIG. 5 is designed as a spring element 38 and integrally formed at the end 30, 32.
  • the pendulum end 30, 32 is itself elasticized by e.g. meandering laser / water jet cuts or the like are attached.
  • Fig. 6 shows a schematic sectional view through one of the two-piece pendulum masses 16 of the centrifugal pendulum 10 along in Fig. 1 (as a dash-dot line) drawn section line Vl-Vl.
  • the corresponding slide recesses 26 and the connecting pins 40 are not shown.
  • a first damping element 36 is attached to the one partial mass 20 at the one circumferential end 30 and a second damping element 36 is attached to the other partial mass 22 at the other peripheral end 32.
  • Fig. 7 shows a schematic sectional view through the guide flange 12 and three of the four two-piece pendulum masses 16 of the centrifugal pendulum 10 of FIG. 1 along the (dashed line) drawn section line VII-VII.
  • the corresponding recesses 24, 26 and 42 and the connecting pin 40th are not shown.
  • the two connected by means of bolts 40, in particular riveted, sub-masses 20, 22 are symmetrical or balanced, since they are always mutually arranged.
  • the damping elements 36 can also be attached to both pendulum ends 30, 32 of each partial mass 20, 22 of a pendulum mass 16 (not shown).
  • damping elements 36 are attached directly to at least one of the circumferential ends 30, 32.
  • the damping elements 36 are attached directly to at least one of the circumferential ends 30, 32.
  • Flange 12 can be made substantially smaller and secondly, the pendulum masses 16 can be made longer and / or heavier, since they are attenuated in mutual striking by the damping elements 36. Stop noises are also effectively reduced since one of the pendulum masses 16 is "decelerated" by one of the circumferentially adjacent pendulum masses 16. The respective small gap between the ends 30, 32 of the adjacent pendulum masses 16 additionally favors this.
  • Such a centrifugal pendulum 10 is suitable for use in a torque transmission device, in particular in a friction clutch.
  • torque transmission devices are used for example in the drive train of vehicles, especially motor vehicles.
  • a friction clutch for coupling a drive shaft of an automotive engine with at least one transmission input shaft this preferably has the following components: (i) a counterplate, (ii) a pressure plate displaceable relative to the counterplate for pressing a clutch disc between the counterplate and the pressure plate, and (iii) at least one associated with the counter-plate and / or a clutch cover centrifugal pendulum 10th

Abstract

L'invention concerne un pendule à force centrifuge (10) destiné à amortir en fonction du nombre de tours les oscillations de rotation d'un dispositif de transmission de couple, en particulier d'un embrayage à friction, comprenant plusieurs masses pendulaires (16), au moins un dispositif de guidage (14) qui définit au moins un plan de guidage le long duquel les masses pendulaires (16) sont guidées mobiles chacune sur sa trajectoire au moyen d'au moins un guidage à coulisse (18), et des éléments d'amortissement (36) pour l'amortissement d'un choc des masses pendulaires (16) respectives au moment où elles atteignent la position extrême sur leur trajectoire. Selon l'invention, les éléments d'amortissement (36) sont disposés aux extrémités des masses pendulaires (16) qui sont circonférentielles relativement à l'axe de rotation (34) du pendule à force centrifuge (10). L'invention concerne en outre un embrayage à friction équipé d'un pendule à force centrifuge correspondant.
PCT/DE2013/200066 2012-08-06 2013-07-18 Pendule à force centrifuge et embrayage à friction à pendule à force centrifuge WO2014023303A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE201311003910 DE112013003910A5 (de) 2012-08-06 2013-07-18 Fliehkraftpendel und Reibungskupplung mit Fliehkraftpendel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012213884 2012-08-06
DE102012213884.6 2012-08-06

Publications (1)

Publication Number Publication Date
WO2014023303A1 true WO2014023303A1 (fr) 2014-02-13

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