EP3497350A1 - Centrifugal pendulum - Google Patents
Centrifugal pendulumInfo
- Publication number
- EP3497350A1 EP3497350A1 EP17735376.0A EP17735376A EP3497350A1 EP 3497350 A1 EP3497350 A1 EP 3497350A1 EP 17735376 A EP17735376 A EP 17735376A EP 3497350 A1 EP3497350 A1 EP 3497350A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pendulum
- centrifugal
- masses
- pendulum mass
- mass carrier
- 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.)
- Withdrawn
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 with a pendulum mass carrier rotatably mounted about an axis of rotation and distributed over the circumference of this pendulum masses suspended in the centrifugal force field of the rotating pendulum mass carrier along a given pendulum mass, the pendulum masses each from a recorded in a recess of the pendulum mass carrier middle part and two the pendulum mass carrier flanking side parts are formed and the pendulum track adjusting pendulum bearings are each formed from radially opposite raceways of the middle parts and the pendulum mass carrier and a rolling on the raceways pendulum role.
- Centrifugal pendulum serve in particular in drive trains of motor vehicles with speed-driven internal combustion engine of the torsional vibration isolation.
- the centrifugal pendulum on a about an axis of rotation, for example, the axis of rotation of the crankshaft of the internal combustion engine, rotatably arranged pendulum mass carrier on which distributed over the circumference pendulum masses are given pendulum by means of pendulum bearings.
- the pendulum masses When the pendulum mass carrier rotates, the pendulum masses are accelerated radially outwards and are displaceable by means of the self-aligning bearings on a given pendulum track, so that they can shift to smaller radii against the action of the centrifugal force when torsional vibrations occur and thereby compensate for the torsional vibrations.
- a typical arrangement of the pendulum masses on a pendulum mass carrier is known from DE 10 2013 214 829 A1.
- This shows a centrifugal pendulum with housed in recesses of the pendulum mass carrier middle parts with pendulum bearings radially superposed raceways.
- both sides of the pendulum mass carrier side parts are arranged, which are connected to each other with the arranged in the recesses of the pendulum mass carrier middle parts.
- the oscillatory mounting of the pendulum masses on the pendulum mass carrier takes place by means of two circumferentially spaced pendulum bearings, which are formed from radially superimposed raceways in the pendulum mass carrier and in the middle part, wherein on the radially opposite raceways a pendulum roller rolls.
- the object of the invention is therefore to propose a generic centrifugal pendulum, which causes less noise.
- object of the invention to provide such measures without additional components.
- the proposed centrifugal pendulum serves the speed-adaptive torsional vibration damping, in particular in a drive train with a speed-driven internal combustion engine.
- the centrifugal pendulum can be tuned to one or more vibration orders of the internal combustion engine.
- the centrifugal pendulum can be integrated as a separate device in the drive train or integrated into another device, such as a torsional vibration damper such as dual mass flywheel, in a Einwassenschwungrad, a friction clutch, a dual clutch, a clutch disc, a hydrodynamic torque converter or the like be.
- the centrifugal pendulum contains a pendulum mass carrier rotatably mounted about a rotation axis.
- the pendulum masses are in each case formed from a central part accommodated in a recess of the pendulum mass carrier and two side parts flanking the pendulum mass carrier.
- the side parts can be connected radially on the outside by means of connections such as webs or brackets and thus formed in one piece. For example, these can be punched and folded according to the connections.
- the pendulum tracks of the pendulum masses each set pendulum bearings, which are each formed from radially opposite tracks of the middle parts and the pendulum mass carrier and a rolling on the raceways pendulum role.
- the recesses may be open radially outside or formed closed.
- pendulum receiving the pendulum masses on the pendulum mass carrier two circumferentially spaced pendulum bearings per pendulum mass are provided in a preferred manner, so that a pendulum track of the pendulum mass results in accordance with a bifilar suspended pendulum.
- the pendulum track can be designed as a pendulum with parallel or trapezoidal arranged pendulum threads according to or as a freeform. A rotation of the pendulum masses during the pendulum movement can be provided. To adjust this pendulum track the raceways of the pendulum bearings are designed accordingly.
- the pendulum masses are at least partially supported against displacement from the pendulum bearings.
- measures are foreseen which will have a Avoid radial displacement of the pendulum masses in the entire circumference of a radial clearance between the spherical rollers and the central part in the recesses of the pendulum mass carrier, without hindering the movement of the central part in the recess on the maximum swing angle of the pendulum masses along the pendulum.
- the movement of the pendulum mass limiting stops can be provided between the pendulum masses.
- the stops are designed in particular as soft stops, for example by two circumferentially elastic stops in the circumferential direction of adjacent pendulum masses meet. In particular, such stops can be provided between the side parts.
- centrifugal pendulum pendulum masses may be provided between the pendulum masses and the pendulum mass, the movement of the pendulum mass limiting stops.
- the attacks can be formed from introduced into the side parts settings that engage axially in recesses of the pendulum mass carrier and prevent unwanted radial movement of the pendulum masses.
- the recesses in which the middle part is housed, and / or separate, adapted to the settings of the side parts recesses may be provided in the pendulum mass carrier.
- both side parts may have facing each other, meeting in the middle or at an axial distance designed outlets, so that the side parts are formed as equal parts.
- one of two circumferentially spaced-through points in a side part and the axially opposite position may be formed plan.
- all the adjustments can be provided on the other side part.
- an elastomeric element such as an elastomeric ring or an elastomeric disk formed with a closed opening, which are pushed onto the appropriate setting.
- an elastomer element positively and / or cohesively absorbed on the setting for example, be vulcanized.
- the throats can for example be cup-shaped and have an opening in the middle.
- annular collar which can be profiled on the front side, for example, can have incisions.
- a tab or the like can be issued from the one or more corresponding side parts and possibly folded over at the end into the plane of the recesses.
- the pendulum bearings opposite contour of the central part of the pendulum masses and a complementary mating contour of the recess of the pendulum mass carrier along the pendulum track form a play-afflicted attack.
- contour and counter contour are formed such that over the pendulum track of the pendulum masses a radial clearance is minimized and in this way the radial drop height of the pendulum mass is limited due to this game between contour and mating contour between the central part and recess of the pendulum mass carrier.
- contour and counter contour are designed so that over the entire swing angle between the stop limit maximum angles of a pendulum mass along the pendulum track with sufficient centrifugal force to maintain a rolling contact of the spherical rollers on the raceways, a touch of the middle part of the Recess is excluded.
- the middle part and the recess in the zero position of the pendulum mass can have two radially enlarged lugs centered on each other in the circumferential direction. Zero position means the position of the pendulum mass at maximum radius.
- the mutually facing lugs form a small radial gap to each other and move with displacement of the pendulum mass from the zero position along their opposite edges while maintaining a small distance past each other.
- On both sides of the flanks of the noses depressions may be provided, in which the maxima of the noses dive at large angles of oscillation.
- the middle parts and the recesses per pendulum mass in each case two circumferentially spaced, each containing a swing angle between zero position and a maximum swing angle contours and contours Contain that in each case Half of the swing angle of the pendulum masses along the pendulum track form a small radial distance from each other and thus limit the drop height of the pendulum masses with insufficient centrifugal force.
- a guide pin can be embedded in the middle part, which is accommodated in the side parts.
- the guide pin can form the contour of the central part or be part of this, which contour with the counter contour of the pendulum mass carrier interacts in such a way that on the swing angle of the pendulum masses a substantially constant gap between each pendulum mass and this receiving recess of the pendulum mass carrier is formed and so that a radial displacement of the pendulum mass with insufficient centrifugal force can be achieved with a hit the contour on the mating contour low noise fails.
- the guide pin can serve as a radially extended nose of the contour, which faces, for example, in zero position of the pendulum mass of a nose or a rounded elevation of the mating contour radially while maintaining a play-affixed stop, which is to be understood by a play-afflicted attack when centrifugal force the pendulum masses and the Pendulum mass carrier set a radial clearance and form in the absence of centrifugal force, the contour and the mating contour a stop, that is to come to lie in contact with each other.
- an elastic element for example a spring element or an elastomeric element, can be arranged between the middle part of the pendulum mass and the guide pin.
- the elastic element can be taken captive in a recess of the middle part and axially supported between the two side parts.
- the elastic element can be positively, positively and / or materially connected to the central part.
- the elastic displacement of the guide pin in conjunction with the action of the elastic element is made possible by a radially limited displaceable reception of the guide pin in the side parts.
- the side parts may have aligned in the radial direction slots, engage in the guides of the guide pin with radial clearance.
- the guide pins can form end stops for the elastic limitation of the oscillation angle of the pendulum masses.
- the mating contour can form a return to which the guide pin upon reaching the end position as maximum swing angle against the action of the elastic member strikes.
- a clearance between the central part and the recess set by the contours and counter contours can be many times smaller than the diameter of the pendulum roller.
- the set game over the entire swing angle of the pendulum masses at the shortest distance is less than one-tenth of the diameter of the spherical roller, preferably less than a fiftieth.
- FIG. 2 shows a side part of the centrifugal pendulum of FIG. 1 in a 3D view
- FIG. 3 shows a centrifugal pendulum modified in comparison with the centrifugal pendulum of FIG. 1 in a 3D partial view
- FIG. 4 shows a side part of the centrifugal pendulum of FIG. 3 in a 3D view
- FIG. 6 shows a detailed view of a centrifugal pendulum with the side part of FIG. 5,
- FIG. 7 shows a side part modified in relation to the side part of FIG.
- FIG. Figure 10 is a detailed view of a centrifugal pendulum with a contour and mating contour between the central part of the pendulum mass and recess of the pendulum mass carrier in zero position of the pendulum mass.
- FIG. 1 1 is a detailed view of the centrifugal pendulum of Figure 10 at maximum
- FIG. 12 shows a detail view of the centrifugal pendulum pendulum of FIG. 10 at maximum
- FIG. 13 shows a section through the upper part of a centrifugal pendulum modified in comparison with the centrifugal force pendulums of the preceding figures
- FIG. 14 shows a partial view of the centrifugal pendulum pendulum of FIG. 13 in the zero position
- Figure 15 is a partial view of the centrifugal pendulum of Figure 13 in fully deflected
- FIG 16 is a detail view of the centrifugal pendulum of Figures 13 to 15 with removed front side part
- FIG. 17 shows the detail of FIG. 16 with the front side part shown in phantom.
- FIG. 1 shows a part of the centrifugal force pendulum 1 in a 3D view with the pendulum mass carrier 2, which is arranged such that it can rotate about an axis of rotation.
- the pendulum mass carrier 2 which is arranged such that it can rotate about an axis of rotation.
- pendulum bearing pendulum masses 3 Distributed over the circumference are not shown by pendulum bearing pendulum masses 3 pendulum arranged along a predetermined by the pendulum bearings pendulum.
- the pendulum masses 3 are made of a central part, not shown, which forms the pendulum bearing with the pendulum mass carrier 2 and the two seetei- len 4, 5 formed.
- the side parts 4, 5 overlap the pendulum mass carrier 2 radially on both sides and thereby support the pendulum masses 3 on the pendulum mass carrier 2.
- the pendulum masses 3 are accelerated with sufficient centrifugal force on the pendulum bearings radially outward and are held in the pendulum bearings. If the centrifugal force is insufficient, the pendulum masses arranged radially above the axis of rotation drop radially inwards from their spherical bearings.
- axially aligned passages 6, 7 are provided on the side parts 4, 5, which extend into the recess 8 of the pendulum mass carrier 2.
- the passages 6, 7 on both side parts 4, 5 extending opposite to contact.
- the elastomer element 9 for example an O-ring, is arranged around the passages 6, 7. Due to the opposite arrangement of the respective halves 6, 7, the side parts 4, 5 may be formed as equal parts.
- FIG. 2 shows the side part 4 of FIG. 1 in a 3D view with the passages 6 as well as embossments 10 for connection like riveting to the middle part, wherein these have depressions corresponding to the embossings 10.
- FIG. 3 shows, in a 3D partial view, a version of the centrifugal force pendulum 1 a which is modified with respect to the centrifugal pendulum 1 of FIG.
- the side parts 4a, 5a each have only one passage per recess 8a, which essentially completely pass through the recess 8a of the pendulum mass carrier 2a.
- the passage 6a of the side part 4a passes through the recess 8a and contacts the flat side of the side part 5a without axial play or sets a predetermined axial clearance.
- FIG. 4 shows the side part 4a of FIG. 3 in a 3D view with the single through position 6a.
- the passages 6, 6a, 7 of Figures 1 to 4 are each formed circular.
- the passage 6b in the side part 4b shown in 3D view, is designed as a flared lip 1 1 b which is folded over into the recess adjacent to the recess.
- FIG. 6 shows a detail of the centrifugal pendulum 1 b with the side part 4 b shown in FIG.
- the tab 1 1 b engages in the recess 8b of the pendulum mass carrier 2b, which also serves to receive the central portion 12b of the pendulum mass 3b to form the self-aligning bearing 13b with the raceways 14b, 15b on which the shuttle roller 16b rolls.
- the tab 11b can serve as a travel limit for the pendulum mass 3b formed from two respective side parts and the middle part 12b and set an axial distance or an axial friction to the pendulum mass carrier 2b when the position is correspondingly flat.
- the tab 1 1 b may be formed wavy to provide a larger bending length to improve the voltage optimization and energy absorption.
- the side part 4c is provided in Figure 7 with a trained as a flap 1 1 c 6c, which is not folded.
- a plurality of tabs 11b, 11c may be provided which, for example, is spaced circumferentially in accordance with the penetrations 6 of FIG. 2 and / or in the same recess 8b can be provided.
- Figures 8 and 9 show different profiles 17, 18 of side parts, which are designed here as depressions 19 as slots in the annular collar 20 of the posts 6a to better pre-assemble the elastomer element 9, 9a according to Figures 1 and 3 and optionally hold ,
- Figures 10 to 12 show the centrifugal pendulum 1 d shown only partially in view at different angles of oscillation of the pendulum masses 3d. Shown is the pendulum mass carrier 2d with a means of the pendulum bearing 13d at this recorded center part 12d of the pendulum masses 3d. The side panels are not shown. The center part 12d accommodated in the recess 8d of the pendulum mass carrier 2d and the recess 8d form the contour 21d and the mating contour 22d on the opposite side of the self-aligning bearings 13d.
- Contour 21 d and counter contour 22 d are formed so that a radial clearance 23 d is minimized over the entire swing angle of the pendulum mass 3d, so that a displacement of the central portion 12 d from the pendulum bearing 13 d unaffected, for example, insufficient or no centrifugal force, that is not disturbing, for example, a noise is.
- contour 21 d and counter contour 22 d are formed as lugs 24 d, 25 d, which in the zero position of the pendulum mass 3d and the middle part 12 d - as in the one shown in Figure 10 - radially opposite each other.
- the middle parts 12d can be widened radially and optionally radially outside the pendulum mass support 2d in the circumferential direction, so that a mass contribution of the side parts is not necessary and this is omitted or provided, provided that an axial support of the middle parts 12d exists
- An axial support of the central parts 12d can be limited to the pendulum mass carrier 2d.
- contours 21 d and counter contours 22 d may be formed in further modifications of the centrifugal pendulum 1 d symmetrical or asymmetrical to the center line of the central portion 12 d.
- FIG. 13 shows the centrifugal force pendulum 1e modified in comparison with the centrifugal force pendulums 1, 1a, 1b, 1d of the preceding figures. Shown is only the upper part of the axis of rotation d arranged centrifugal pendulum 1 e.
- the pendulum mass carrier 2e receives at its recesses 8e each have a central portion 12e, which forms a pendulum mass 3e by means of the side parts 4e, 5e.
- the pendulum masses 3e are each riveted to the middle part 12e by means of the rivets 33e, which are sunk into the side parts 4e, 5e.
- a contour 21 e is arranged on the central part 12e, the with the arranged on the pendulum mass carrier 2e counter contour 22e forms a so-called play-related stop. This means that over the oscillation angle of the pendulum masses 3e a substantially equal radial clearance 23e is set. If the centrifugal force is insufficient, the contour 21 e and the mating contour 22e approach each other, and finally, due to the small radial play 23e, substantially noiselessly form a stop.
- the contour 21 e contains the guide pin 29e, which is guided by means of the projections 30e in the radially aligned slots 32e of the side parts 4e, 5e.
- the elastic element 31 e is arranged, which forms an elastic buffer between the guide pin 29e and the middle part 12e.
- the elastic member 31 e may be formed as a spring element or - as shown here - as an elastomeric element 34 e, which is axially secured between the two side parts 4 e, 5e and captively taken.
- FIG. 14 shows a partial view of the centrifugal pendulum 1 e of FIG. 13 with the front side part removed. This results in the view of the middle part 12e with the underlying side part 4e.
- the pendulum mass 3e is pivotally received by means of the spherical rollers 16e on the pendulum mass carrier 2e, the figure 14 shows the centrifugal pendulum 1 e in the zero position, ie at undeflected pendulum masses 3e.
- the guide pin 29e of the contour 21 e and the nose 25e of the mating contour 22e of the pendulum mass carrier 2e radially opposite to form the radial clearance 23e.
- the recess 35e is provided, in which the elastomeric element 34e is received.
- FIG. 15 shows the centrifugal pendulum 1 e in the representation of FIG. 14 at an end position of the pendulum mass 3 e.
- the guide pin 29e enters through Elastomer element 34e provided elastic contact with the recess 36e of the mating contour 22e of the pendulum mass carrier 2e and thus forms an elastic stop of the pendulum mass 3e relative to the pendulum mass carrier 2e.
- the elastomer element 34e can be bridged, for example, by means of the end stops 37e. It is understood that in the opposite end position of the pendulum masses 3e the same elastic stop can be provided.
- Figure 16 shows a 3D view of the region of the contour 21 e and the mating contour 22e of the centrifugal pendulum 1 e of Figures 13 to 15 with removed front side part.
- the elastomer element 34e is received against which is pressed in an exhaustion of the radial clearance 23e between the contour 21e and the mating contour 22e of the guide pin 29e.
- FIG. 17 shows a 3D view of the region of the contour 21 e and the mating contour 22e of the centrifugal pendulum 1 e of FIGS. 13 to 15 with the front side part 5e shown in transparent fashion with the guide pin 29e and the elastomer element 34e.
- the projection 30e of the guide pin 29e is radially limited displaceable in the slot 32e of the side part 5e.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Support Of The Bearing (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016215145.2A DE102016215145A1 (en) | 2016-08-15 | 2016-08-15 | centrifugal pendulum |
PCT/DE2017/100430 WO2018033170A1 (en) | 2016-08-15 | 2017-05-18 | Centrifugal pendulum |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3497350A1 true EP3497350A1 (en) | 2019-06-19 |
Family
ID=59284955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17735376.0A Withdrawn EP3497350A1 (en) | 2016-08-15 | 2017-05-18 | Centrifugal pendulum |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3497350A1 (en) |
CN (1) | CN109563904B (en) |
DE (2) | DE102016215145A1 (en) |
WO (1) | WO2018033170A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112343964A (en) | 2019-08-09 | 2021-02-09 | 法雷奥凯佩科液力变矩器(南京)有限公司 | Centrifugal force pendulum, torque transmission device comprising a centrifugal force pendulum and vehicle |
DE102019128055A1 (en) * | 2019-10-17 | 2021-04-22 | Schaeffler Technologies AG & Co. KG | Centrifugal pendulum and torsional vibration damper with this |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009042812A1 (en) * | 2008-11-24 | 2010-05-27 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Torsional damping device for motor vehicle, has flywheel element connected with output shaft of engine, and inertial masses guided into flange by body in statically determined manner, where paths lie in flange and inertial masses |
EP2652355B1 (en) * | 2010-12-15 | 2016-11-09 | Schaeffler Technologies AG & Co. KG | Centrifugal force pendulum and clutch disc having the same |
FR2989753B1 (en) * | 2012-04-20 | 2014-04-18 | Valeo Embrayages | PENDULAR DAMPING DEVICE, ESPECIALLY FOR A MOTOR VEHICLE TRANSMISSION |
US9689463B2 (en) | 2012-07-31 | 2017-06-27 | Schaeffler Technologies Gmbh & Co. Kg | Roller for a pendulum mass of a centrifugal force pendulum |
FR3008758B1 (en) * | 2013-07-19 | 2015-07-17 | Valeo Embrayages | PENDULUM OSCILLATOR TYPE DAMPING SYSTEM |
FR3018882B1 (en) * | 2014-03-18 | 2018-03-02 | Valeo Embrayages | PENDULAR DAMPING DEVICE, IN PARTICULAR FOR A MOTOR VEHICLE |
FR3019608B1 (en) * | 2014-04-04 | 2016-03-11 | Valeo Embrayages | TORSION OSCILLATION DAMPING DEVICE |
DE102014217251A1 (en) * | 2014-08-29 | 2016-03-03 | Schaeffler Technologies AG & Co. KG | centrifugal pendulum |
FR3027086B1 (en) * | 2014-10-14 | 2017-03-31 | Valeo Embrayages | TORSION OSCILLATION DAMPING DEVICE |
-
2016
- 2016-08-15 DE DE102016215145.2A patent/DE102016215145A1/en not_active Withdrawn
-
2017
- 2017-05-18 EP EP17735376.0A patent/EP3497350A1/en not_active Withdrawn
- 2017-05-18 CN CN201780047694.6A patent/CN109563904B/en active Active
- 2017-05-18 DE DE112017004091.4T patent/DE112017004091A5/en not_active Withdrawn
- 2017-05-18 WO PCT/DE2017/100430 patent/WO2018033170A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN109563904A (en) | 2019-04-02 |
DE102016215145A1 (en) | 2018-02-15 |
DE112017004091A5 (en) | 2019-05-09 |
CN109563904B (en) | 2020-12-18 |
WO2018033170A1 (en) | 2018-02-22 |
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