EP3880985A1 - Torsional vibration damping assembly - Google Patents
Torsional vibration damping assemblyInfo
- Publication number
- EP3880985A1 EP3880985A1 EP19806151.7A EP19806151A EP3880985A1 EP 3880985 A1 EP3880985 A1 EP 3880985A1 EP 19806151 A EP19806151 A EP 19806151A EP 3880985 A1 EP3880985 A1 EP 3880985A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- primary
- vibration damping
- friction
- torsional vibration
- friction ring
- 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- Withdrawn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
- 238000013016 damping Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 5
- 238000004146 energy storage Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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
- F16F15/129—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 characterised by friction-damping 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
- 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
- F16F15/139—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 friction-damping means
Definitions
- the present invention relates to a torsional vibration damping arrangement for a drive train of a motor vehicle.
- Torsional vibration damping arrangements for a drive train of a motor vehicle such as a dual mass damper (ZMG) or a dual mass flywheel (ZMS) are known per se. These are used, for example, in a drive train of a vehicle to dampen rotational irregularities, for example, introduced by a motor, which can lead to torsional vibrations.
- the torsional vibration damping arrangement mainly comprises a primary element and a secondary element which can be rotated against an energy store.
- friction arrangements are also known between the primary element and the secondary element, which additionally cause friction when the primary element is rotated relative to the secondary element. There is a desire to produce this friction arrangement inexpensively, and that it is easy to assemble.
- the object of the present invention to provide a torsional vibration damping arrangement, wherein the torsional vibration damping arrangement comprises a friction arrangement, wherein the friction arrangement can be produced inexpensively and that the function of the friction device is improved.
- a torsional vibration damping arrangement for a drive train of a motor vehicle, comprising a rotary axis A rotatable primary element and a rotatable against an energy store relative to the primary element ble secondary element, a friction arrangement being provided in the effective direction between the primary element and the secondary element and where in the friction arrangement comprises at least one friction ring, an energy store, a holding element and a control element, the friction ring, the energy store and the holding element being assigned to one element of the primary element or secondary element, the control element being the other element of the secondary element or primary element is assigned, the control element causing the friction ring to be driven in rotation, the control element being formed from the element of the primary element or secondary element by a reshaping process.
- the control element is formed by the shaping process from the secondary element.
- This method is of course also applicable to the primary element in the event that the control element is provided on the primary element.
- the control element rotates the friction ring only after the clearance angle has been exceeded.
- the clearance angle can of course be provided in both directions of rotation about the axis of rotation A.
- the friction ring can provide a recess, this recess providing a larger circumferential extension than is provided for the control element. This can have the effect that when the primary element is rotated relative to the secondary element, the friction ring is only rotated by the control element, that is to say the friction arrangement begins to act when the clearance angle provided for it is exceeded both in one direction of rotation and in the other direction of rotation . This can have the effect that the friction arrangement only begins to act at large amplitudes and thus the effect of the friction arrangement only comes into force when the clearance angle is exceeded.
- the holding element is non-rotatably connected to one element of the primary element or secondary element, the friction ring being clamped rotatably axially between a holding element and the one element of the primary element or secondary element against a force of the energy store.
- the energy storage which is advantageously carried out by one or more disc springs, on the one hand against the holding element and on the other hand against the friction ring or against one element of the primary element or secondary element.
- the friction ring is subjected to an axial force, which causes the friction ring to rub against one element of the primary element or secondary element with relative rotation against the one element of the primary element or secondary element and to generate a frictional torque. Since the friction ring is actuated by the control element, that is to say it is driven in rotation, the friction effect is achieved when the secondary element is turned to the primary element.
- the friction ring has an axial extent, the axial extent specifying the minimum axial distance between the primary element and the secondary element.
- the friction ring can not only perform the function for the friction arrangement, namely to provide the friction partner, but it can also be used as an axial stop between the primary element and the secondary element.
- the friction ring thus comprises two functions. First, the function of rubbing with a rubbing partner, i.e. H. the friction ring provides a friction surface against one element of the primary element or secondary element and it takes over the function of the axial stop, namely that the primary element does not strike the secondary element, but while maintaining the minimum axial distance caused by the axial extension the friction ring is specified, remains.
- This configuration of the friction ring means that there is no need for a separate axial stop that is often used.
- a pressure ring is provided axially between the friction ring and the energy store. This means that the additional pressure ring is inserted between the telescopic spring or springs and the friction ring. It can be partially provided that the pressure ring is designed to be non-rotatable but axially displaceable with the holding element. This configuration means that there is no relative rotation on the plate spring. The relative rotation, i.e. the friction arises only between the friction ring and the pressure ring on the one hand and on the other hand between the friction ring and the one element of the primary element or secondary element. This can reduce wear between the plate spring and the friction ring.
- the friction ring can be made of a wear-resistant material.
- the shaping process of the control element is carried out in the form of a rivet shape.
- the formation as a rivet formation is particularly inexpensive to produce and can be integrated at the same time as a further shaping process on the respective element of primary element or secondary element. As a result, it can be provided that no separate operation is provided for this.
- the friction arrangement is arranged radially within the energy store with respect to the axis of rotation A.
- the energy store is advantageously to be provided radially on the outside as far as possible, so that the friction arrangement is to be provided as far radially on the inside as possible with respect to space-saving design and towards the axis of rotation A.
- the friction arrangement is to be seen radially outside of a fastening of the primary element or of the secondary element to a drive unit.
- the energy store can consist of a plate spring or of axially staggered plate springs.
- disc springs are particularly space-saving energy stores and can advantageously be stacked axially, so that a desired axial pretensioning force on the friction ring can be provided without great effort.
- the plate spring can be installed in such a way that when the friction arrangement wears, the axially acting force through the plate spring remains almost constant over a predetermined wear path.
- Fig. 1 a torsional vibration damping arrangement according to the invention in one
- Cross-section; 2 shows a detail of a torsional vibration damping arrangement according to the invention in the region of the friction arrangement;
- FIG. 3 shows a cross section of a friction arrangement according to the invention
- Fig. 4 is a plan view of a friction arrangement according to the invention with control elements in a rest position;
- Fig. 5 is a plan view of a friction arrangement according to the invention, wherein in a
- FIG. 1 shows with FIG. 2 a torsional vibration damping arrangement 1 according to the invention.
- the structure of the torsional vibration damping arrangement 1 is as follows.
- a primary element 5 which, as provided here, is fastened by means of a screw connection to a drive unit (for example, not shown in more detail) represents the primary side.
- a secondary element 8 can also be seen, which acts against the force of an energy store 4, here in the form of helical compression springs, around the Axis of rotation A is relatively rotatable.
- the friction arrangement 20 is shown radially within the energy store 4, particularly before being watched in part in FIG. 2. It is seen here before that a holding element 24 is screwed non-rotatably to the primary element 5 by means of the screwing of the primary element to the drive unit.
- the holding element 24 has an S-shaped radially outside. Between the S-shaped deformation of the holding element 24 and the primary element 5, a friction ring 21 is provided axially staggered along the axis of rotation A, then a pressure ring 22 and two plate springs 33. The disc springs 33 exert an axial force. The axial force of the plate springs 33 is based on the one hand on the S-shaped formation of the holding element 24 and on the other hand on the pressure ring 22 which in turn exerts an axial force against the friction ring 21 and the friction ring 21 against the primary element 5.
- the pressure ring 22 provides an anti-rotation lock radially on the inside, as a result of which the pressure ring 22 is secured against rotation with respect to the holding element 24, but is still axially displaceable with respect to the holding element 24.
- the friction ring 21 is rotatably provided with respect to the primary element 5 and the pressure ring 22.
- the rotation of the retaining ring 21 can be opposite the primary element 5 and the pressure ring 22 only take place when this is rotatably carried by the secondary element 8.
- a control element 25 is provided on the secondary element 8.
- the control element 25 is formed by means of a molding process from the secondary element 8. It should be mentioned here that the control element is designed similar to a rivet shape 35.
- the control element 25 projects into a recess 40 in the friction ring 21, this being better seen in FIG. 4.
- the twisting action counteracts the frictional force on the friction arrangement, more precisely here between the friction ring 21 and the secondary element 5, and the friction ring 21 and the pressure ring 22.
- a further relative rotation of the primary element 5 relative to the secondary element 8 takes place only under the action of the friction arrangement 20.
- FIG. 3 shows the friction arrangement 21 according to the invention in a cross section separately.
- the control element 25 is shaped like a rivet shape 35 from the control element 8. This eliminates the fact that, for example, the control element 25 is designed as a separate component and subsequently has to be firmly connected to the secondary element 8 by means of a connecting process. Since the secondary element 8, as also shown here, Darge must already go through a shaping process, it can be provided in the same shaping process that the control elements 25 are shaped by means of the same shaping process from the secondary element 8.
- the friction ring 21 and the holding element 24 as well as the pressure ring 22 and the two plate springs 33 can also be seen here well.
- Radially on the inside of the secondary element 8 there is a toothing area with which the secondary element 8 can be connected, for example, to a transmission input shaft, not shown here.
- FIG. 4 shows a top view of a friction arrangement according to the invention. It can be clearly seen that here several control elements 25 extend around the circumference Axis of rotation A are evenly distributed. Also clearly visible is the recess 40 located on the friction ring 21. The control element 25 engages in this recess 40. It can be clearly seen that a circumferential extent of the recess 40 is greater than the circumferential extent of the control element 25. For the case provided here that the control element 25 is in a rest position in the middle of the recess 40 of the friction ring 21, applies that the secondary element 8 in both directions of rotation relative to the friction ring 21 has a clearance angle ai in one direction of rotation and a clearance angle a 2 the other direction of rotation.
- ai is equal to a 2 . Not shown here, however, it may also be the case that ai and a 2 may be different. This also means that in the event that the secondary element 8 rotates relative to the friction ring 21 in both directions only up to a value ai or a 2 about the axis of rotation A, the friction arrangement 20 has no effect at this angle of rotation. Only when the angle of rotation of the secondary element 8 relative to the friction ring 21 is larger than ai or ai, as seen in the respective direction, is it caused that the friction ring 21 is rotated by the control element 25. In retrospect of FIGS.
- FIG. 5 shows a top view similar to that in FIG. 4, but here the control element 25 has reached an end region of the recess 40 of the friction ring 21. This means that the clearance angle is used up in one direction, that is to say in the direction of angle of rotation a 2 . If the secondary element 8 were now rotated further relative to the friction ring 21, the friction ring 21 would be rotated and the further rotation would be opposed to the frictional force of the friction arrangement 20.
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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018219568.4A DE102018219568A1 (en) | 2018-11-15 | 2018-11-15 | Torsional vibration damping arrangement |
PCT/EP2019/081434 WO2020099618A1 (en) | 2018-11-15 | 2019-11-15 | Torsional vibration damping assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3880985A1 true EP3880985A1 (en) | 2021-09-22 |
Family
ID=68621255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19806151.7A Withdrawn EP3880985A1 (en) | 2018-11-15 | 2019-11-15 | Torsional vibration damping assembly |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3880985A1 (en) |
CN (1) | CN113056625B (en) |
DE (1) | DE102018219568A1 (en) |
WO (1) | WO2020099618A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10028150A1 (en) * | 2000-06-07 | 2001-12-13 | Mannesmann Sachs Ag | Multi-weight flywheel has two weight arrangements, axial support element, bearings, friction arrangement with contact formation and counter engaging formation. |
DE4327017C2 (en) * | 1992-08-20 | 2002-03-28 | Mannesmann Sachs Ag | torsional vibration damper |
EP1707843B1 (en) * | 2005-03-29 | 2015-07-22 | Valeo Embrayages | Double mass flywheel for vehicle |
DE102016223413A1 (en) * | 2015-11-30 | 2017-06-01 | Schaeffler Technologies AG & Co. KG | Dual mass flywheel with friction control disc |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2706006B1 (en) * | 1993-06-02 | 1995-07-07 | Valeo | Shock absorber steering wheel, especially for motor vehicles. |
FR2706963B1 (en) * | 1993-06-25 | 1995-09-15 | Valeo | |
DE19817906A1 (en) * | 1997-10-29 | 1999-05-06 | Rohs Voigt Patentverwertungsge | Torsion oscillation dampener for vehicular clutch |
CN101086279A (en) * | 2006-06-07 | 2007-12-12 | 卢克摩擦片和离合器两合公司 | Rotational vibration attenuation device |
DE102016210740A1 (en) * | 2016-06-16 | 2017-12-21 | Zf Friedrichshafen Ag | Torsion damper with a vibration-dependent friction device |
-
2018
- 2018-11-15 DE DE102018219568.4A patent/DE102018219568A1/en active Pending
-
2019
- 2019-11-15 EP EP19806151.7A patent/EP3880985A1/en not_active Withdrawn
- 2019-11-15 CN CN201980075717.3A patent/CN113056625B/en active Active
- 2019-11-15 WO PCT/EP2019/081434 patent/WO2020099618A1/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4327017C2 (en) * | 1992-08-20 | 2002-03-28 | Mannesmann Sachs Ag | torsional vibration damper |
DE10028150A1 (en) * | 2000-06-07 | 2001-12-13 | Mannesmann Sachs Ag | Multi-weight flywheel has two weight arrangements, axial support element, bearings, friction arrangement with contact formation and counter engaging formation. |
EP1707843B1 (en) * | 2005-03-29 | 2015-07-22 | Valeo Embrayages | Double mass flywheel for vehicle |
DE102016223413A1 (en) * | 2015-11-30 | 2017-06-01 | Schaeffler Technologies AG & Co. KG | Dual mass flywheel with friction control disc |
Non-Patent Citations (1)
Title |
---|
See also references of WO2020099618A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102018219568A1 (en) | 2020-05-20 |
CN113056625B (en) | 2022-11-15 |
CN113056625A (en) | 2021-06-29 |
WO2020099618A1 (en) | 2020-05-22 |
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