WO2016146122A1 - Fliehkraftpendel - Google Patents
Fliehkraftpendel Download PDFInfo
- Publication number
- WO2016146122A1 WO2016146122A1 PCT/DE2016/200134 DE2016200134W WO2016146122A1 WO 2016146122 A1 WO2016146122 A1 WO 2016146122A1 DE 2016200134 W DE2016200134 W DE 2016200134W WO 2016146122 A1 WO2016146122 A1 WO 2016146122A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pendulum
- centrifugal
- masses
- energy storage
- support member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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
- F16F15/14—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, in particular for a torsional vibration damper of a drive train of a motor vehicle with a support member rotatably mounted about a rotation axis and at this pendulum masses by means of pendulum bearings with pendulum in the centrifugal force field of the rotating support member.
- Centrifugal pendulum serve the speed-adaptive torsional vibration isolation and are used in particular in drive trains with a torsionally vibrating internal combustion engine.
- the torsional vibration isolation takes place by swinging suspended in the centrifugal force field pendulum suspended on a support member pendulum masses of torque peaks registered energy as potential energy and then return to the drive train.
- a centrifugal pendulum can-as is known, for example, from WO2014 / 082629 A1-be provided on a single-mass flywheel, for example a single-mass flywheel made of sheet metal.
- a centrifugal pendulums on a torsional vibration damper corresponding to the document WO2014 / 1 14 280 A1 on a clutch disc, according to the document EP 2 600 030 A1 hydrodynamic torque converter, be provided on a housing of a friction clutch or similar locations of the drive train.
- pendulum masses can be arranged axially between two side parts, which form the carrier part, distributed over the circumference.
- the pendulum masses can - as known from DE 10 201 1 103 471 A1 - be supported by means of energy storage against each other in the circumferential direction, for example as hard attacks to prevent.
- the vibration order from which the centrifugal pendulum is tuned to be disturbed can be disturbed.
- the object of the invention is to propose a centrifugal pendulum whose insulation effect is improved, especially at low speeds.
- the proposed centrifugal pendulum is intended in particular for a torsional vibration damper of a drive train of a motor vehicle.
- the centrifugal pendulum can be used separately as a speed-adaptive torsional vibration damper.
- the centrifugal pendulum can be integrated into another unit of the drive train, for example, on and / or output side in said torsional vibration damper, for example in a dual mass flywheel, in a clutch disc, in a friction clutch, in a hydrodynamic torque converter, to a rotor of an electric machine or the like .
- the centrifugal pendulum can be housed inside or outside of a converter housing, so be operated wet or dry.
- a carrier part of the centrifugal pendulum can be arranged on an input part and / or an output part of a torsional vibration damper of a lockup clutch, for example a so-called lock-up damp
- the carrier part is provided as a pendulum mass carrier which is arranged so as to be rotatable about an axis of rotation and on which at least two, preferably between two and six, extend over distributed around the circumference, arranged by means of two rolling elements spaced apart from each other in the circumferential direction, such as pendulum rollers, which are displaceable pendulum masses.
- the rotating about the axis of rotation support member may be formed of an annular one-piece or formed from several ring segments central pendulum on which pendulum masses are arranged on both sides, wherein axially opposite pendulum masses are connected by means of cutouts of the pendulum by cross-connecting means.
- the support member may be formed of two side parts which form between axially expanded areas in which the pendulum masses are accommodated.
- the pendulum masses can be formed from several, for example, two axially layered pendulum mass parts.
- the pendulum masses are suspended by means of circumferentially spaced pendulum bearings pendulum on the support member.
- the pendulum bearings are each formed of a rolling element such as spherical roller and provided on the support member and the pendulum mass parts raceways on which roll the spherical rollers under centrifugal force of the radially outwardly accelerated pendulum masses.
- the spherical rollers each roll on tracks with predetermined shape curves, which are complementary to each other in the pendulum masses and in the support member.
- recesses are respectively provided, on which the raceways are introduced.
- a spherical roller engages over the recesses in the support member and in the pendulum mass, so that in each case a pendulum bearing is formed. Due to the shape of the form curves of the raceways while the pendulum is given as pendulum vibration of a pendulum mass, for example, a pendulum oscillation in free form or a pendulum oscillation according to a bifilar as parallel or trapezoidal suspended from the support member pendulum mass.
- the restoring force can be increased compared to the pendulum masses.
- This has the particular advantage that, as a result of the centrifugal force decreasing as a result of the reduced rotational speed of the carrier part, the insulating effect of the centrifugal force pendulum that is thereby reduced can be counteracted. Due to the increased restoring forces of the pendulum masses by means of the energy storage, the insulating effect of the centrifugal pendulum against torsional vibrations, especially in internal combustion engines with an already available at low speed high torque with appropriate torque fluctuations, for example, diesel engines or gasoline engines with electrically operated turbochargers can be effectively used. In particular, by means of the proposed centrifugal pendulum already smaller at speeds
- centrifugal pendulum energy storage can be effectively arranged in the circumferential direction on both sides between the pendulum masses and the support part.
- the restoring force of the pendulum masses is increased in both directions relative to a neutral position.
- An optionally occurring detuning of the set oscillation order of the centrifugal force pendulum by the at least one energy accumulator can be compensated, for example, by pendulum movements of the pendulum masses relative to the support part depending on the effect of the at least one energy accumulator and of curves of raceways and rolling elements of the pendulum bearings rolling on these raceways are tuned to a predetermined order of vibration.
- a tuning of the centrifugal pendulum pendulum in an advantageous manner is not limited to the pendulum mass movement in the centrifugal force field but rather taking into account the pendulum motion with the built-between support member and the pendulum mass energy storage and its effect on a
- Oscillation angle of the pendulum mass can be done.
- the influence of the energy storage disturbing the order of vibration can be compensated, for example, by adapting the raceways of the pendulum masses and / or the support member to the disturbance, for example, be made flatter, so that the radial portion of the raceways decreases with increasing swing angle and thus the centrifugal force restoring forces are reduced ,
- an interpretation of at least one energy storage such that a force caused by the energy storage restoring force of the pendulum masses in a neutral position when falling below a predetermined speed is greater than a conditional by the centrifugal restoring force of the pendulum masses.
- the spring force of the energy storage can be designed over the oscillation angle so that the energy storage is particularly effective at low speeds, for example less than 1500 / min, preferably less than 1000 / min.
- the effect of the energy storage can be suspended at higher speeds.
- the at least one energy store may be formed from at least one torsion spring, for example at least one or more nested, parallel or serially arranged helical compression springs or tension springs.
- leaf springs, disc springs or cup spring packages of disc springs and / or the like connected in series can be provided.
- the at least one energy store can be supported radially outward by means of a supporting device, for example a buckling protection against centrifugal force.
- the supporting device can be moved below a predetermined rotational speed. be effective, for example, by a radial clearance between the energy storage and the support device is provided, which is reduced with increasing centrifugal force by an intended buckling of the energy storage.
- a friction-reducing intermediate element can be provided on support surfaces of the at least one energy accumulator between it and the carrier part or between the latter and the pendulum mass.
- the intermediate element can be, for example, a disk coated on both sides or with material having a low coefficient of friction or formed from this material.
- the support surfaces of the energy store and / or the pendulum surface may be coated with such a material.
- Low frictional coefficient materials may include, for example, plastics such as perfluorinated polymers (PTFE, PVDF, etc.), ceramics, or the like.
- the at least one energy store can be arranged radially inside, radially outside or at the radial height of the pendulum masses. In an arrangement at radially equal height of the energy storage can be arranged axially adjacent to the pendulum mass or arranged in sections of the pendulum masses. In the case of an arrangement of the energy storage devices provided radially outside or radially within the pendulum masses, the pendulum mass can have a radially expanded tab forming a loading area for acting on the energy accumulator. In this case, in the case of pendulum masses arranged on both sides of the carrier part, the tabs of axially opposite pendulum masses can be connected to one another by means of a bow forming the loading area.
- Figure 1 is a schematic partial view of a centrifugal pendulum with energy storage between the support member and the pendulum masses
- Figures 1 and 2 show the arranged around the rotational axis d in a drive train of a motor vehicle, in particular in a torsional vibration damper centrifugal pendulum 1 with the support member 2 and distributed over the circumference arranged pendulum masses 3 in a schematic representation.
- the support member 2 is connected in the embodiment shown by means of the openings 4 with an input part or an output part of a torsional vibration damper, for example, riveted.
- the support member 2 is formed as a pendulum 5 and has on both sides pendulum masses 3, wherein axially opposite pendulum masses 3 by means of recesses of the pendulum flange 5 by cross-connecting means 6 are fixedly connected together to pendulum mass units 7.
- the oscillating in the centrifugal force field of the rotating support member 2 arrangement of pendulum masses 3 or pendulum mass units 7 takes place in each case by means of two spaced pendulum bearings 23. These are formed from recesses 8, 9 of the pendulum flange 5 and the spherical rollers 10, which on tracks 1 1, 12 of the recesses 8, 9 and pass axially through the recesses 8, 9.
- the shape of the raceways 1 1, 12 are the pendulum motion of the pendulum masses in the centrifugal force field under the influence of torsional vibrations, for example, the internal combustion engine of the drive train before.
- the spacers 13 set the distance of the pendulum masses to the support part 2.
- the insulation effect of the centrifugal pendulum due to the inherent in a speed range with low speeds of the support member 2 about the axis of rotation d, for example, less than 1000 / min returning centrifugal force, the insulation effect of the centrifugal pendulum, because the forces acting on the pendulum mass restoring forces can be reduced.
- the restoring force in the exemplary embodiment shown is increased in both circumferential directions by an energy store 14 in each case.
- the energy storage 14 between the carrier part 2 and the pendulum masses 3 in the circumferential direction effectively inserted, for example, biased.
- the energy storage 14 are formed in the embodiment shown from helical compression springs 15 which are acted upon by support surfaces 16 of the support member 2 and by means of support surfaces 17 of radially expanded tabs 18 of the pendulum masses 3 in the circumferential direction as soon as the pendulum masses 3 oscillate relative to the support member 2.
- the tabs 18 axially opposite pendulum masses 3 are connected by means of the bracket 19, which forms the support surface 17.
- a provision results in each case by means of a restoring force provided by the energy storage 14 in the illustrated Neuraigna.
- the restoring force acts in the same direction as the restoring force of the pendulum masses 3 displacing radially outward along the raceways 11, 12 in the centrifugal force field under the influence of torsional vibrations.
- the centrifugal force predominates and at low rotational speeds that of the energy accumulators caused restoring force.
- the intermediate elements 20 are formed or coated from material with a low coefficient of friction.
- the supporting device 21 is provided radially outside the energy store 14 and is connected to the carrier part 2 in a manner not shown. Furthermore, in the exemplary embodiment shown, the supporting device 21 has the radial gap 22 with respect to the energy stores 14, so that contact and therefore friction between the energy stores 14 and the supporting device 21 are maintained at low rotational speeds and support only occurs with increasing rotational speeds.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112016001276.4T DE112016001276A5 (de) | 2015-03-19 | 2016-03-10 | Fliehkraftpendel |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015204994.9A DE102015204994B4 (de) | 2015-03-19 | 2015-03-19 | Fliehkraftpendel |
| DE102015204994.9 | 2015-03-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016146122A1 true WO2016146122A1 (de) | 2016-09-22 |
Family
ID=55701651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2016/200134 Ceased WO2016146122A1 (de) | 2015-03-19 | 2016-03-10 | Fliehkraftpendel |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE102015204994B4 (de) |
| WO (1) | WO2016146122A1 (de) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4340293A1 (de) * | 1993-11-26 | 1995-06-01 | Freudenberg Carl Fa | Drehschwingungstilger |
| EP1775496A2 (de) * | 2005-10-13 | 2007-04-18 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Drehschwingungsdämpfungseinrichtung |
| US20110180358A1 (en) * | 2010-01-27 | 2011-07-28 | Gm Global Technology Operations, Inc. | Vibration absorber |
| DE102011103471A1 (de) | 2010-06-29 | 2011-12-29 | Schaeffler Technologies Gmbh & Co. Kg | Fliehkraftpendel |
| DE102011004443A1 (de) * | 2011-02-21 | 2012-08-23 | Zf Friedrichshafen Ag | Schwingungsdämpfungseinrichtung |
| EP2600030A2 (de) | 2011-12-01 | 2013-06-05 | Schaeffler Technologies AG & Co. KG | Drehmomentwandler |
| DE102013208430A1 (de) * | 2012-05-16 | 2013-11-21 | Schaeffler Technologies AG & Co. KG | Fliehkraftpendel |
| WO2014023303A1 (de) | 2012-08-06 | 2014-02-13 | Schaeffler Technologies AG & Co. KG | Fliehkraftpendel und reibungskupplung mit fliehkraftpendel |
| WO2014082629A1 (de) | 2012-11-30 | 2014-06-05 | Schaeffler Technologies AG & Co. KG | Drehmomentübertragungseinrichtung und antriebsstrang mit drehmomentübertragungseinrichtung |
| WO2014114280A1 (de) | 2012-12-20 | 2014-07-31 | Schaeffler Technologies AG & Co. KG | Fliehkraftpendel |
| DE102013201981A1 (de) | 2013-02-07 | 2014-08-07 | Audi Ag | Drehschwingungsdämpfer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012217958A1 (de) * | 2012-10-01 | 2014-04-03 | Schaeffler Technologies Gmbh & Co. Kg | Fliehkraftpendel |
| DE102014207229A1 (de) * | 2013-05-06 | 2014-11-06 | Schaeffler Technologies Gmbh & Co. Kg | Fliehkraftpendel |
-
2015
- 2015-03-19 DE DE102015204994.9A patent/DE102015204994B4/de not_active Revoked
-
2016
- 2016-03-10 WO PCT/DE2016/200134 patent/WO2016146122A1/de not_active Ceased
- 2016-03-10 DE DE112016001276.4T patent/DE112016001276A5/de not_active Withdrawn
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4340293A1 (de) * | 1993-11-26 | 1995-06-01 | Freudenberg Carl Fa | Drehschwingungstilger |
| EP1775496A2 (de) * | 2005-10-13 | 2007-04-18 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Drehschwingungsdämpfungseinrichtung |
| US20110180358A1 (en) * | 2010-01-27 | 2011-07-28 | Gm Global Technology Operations, Inc. | Vibration absorber |
| DE102011103471A1 (de) | 2010-06-29 | 2011-12-29 | Schaeffler Technologies Gmbh & Co. Kg | Fliehkraftpendel |
| DE102011004443A1 (de) * | 2011-02-21 | 2012-08-23 | Zf Friedrichshafen Ag | Schwingungsdämpfungseinrichtung |
| EP2600030A2 (de) | 2011-12-01 | 2013-06-05 | Schaeffler Technologies AG & Co. KG | Drehmomentwandler |
| DE102013208430A1 (de) * | 2012-05-16 | 2013-11-21 | Schaeffler Technologies AG & Co. KG | Fliehkraftpendel |
| WO2014023303A1 (de) | 2012-08-06 | 2014-02-13 | Schaeffler Technologies AG & Co. KG | Fliehkraftpendel und reibungskupplung mit fliehkraftpendel |
| WO2014082629A1 (de) | 2012-11-30 | 2014-06-05 | Schaeffler Technologies AG & Co. KG | Drehmomentübertragungseinrichtung und antriebsstrang mit drehmomentübertragungseinrichtung |
| WO2014114280A1 (de) | 2012-12-20 | 2014-07-31 | Schaeffler Technologies AG & Co. KG | Fliehkraftpendel |
| DE102013201981A1 (de) | 2013-02-07 | 2014-08-07 | Audi Ag | Drehschwingungsdämpfer |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112016001276A5 (de) | 2018-01-11 |
| DE102015204994B4 (de) | 2017-08-10 |
| DE102015204994A1 (de) | 2016-09-22 |
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