EP2882978A1 - Torsionsschwingungsdämpfer, zweimassenschwungrad und leistungsverzweigendes torsionsschwingungsdämpfersystem - Google Patents
Torsionsschwingungsdämpfer, zweimassenschwungrad und leistungsverzweigendes torsionsschwingungsdämpfersystemInfo
- Publication number
- EP2882978A1 EP2882978A1 EP13739386.4A EP13739386A EP2882978A1 EP 2882978 A1 EP2882978 A1 EP 2882978A1 EP 13739386 A EP13739386 A EP 13739386A EP 2882978 A1 EP2882978 A1 EP 2882978A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torsional vibration
- vibration damper
- spring
- receiving
- receiving element
- 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- Withdrawn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
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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
- F16F15/12—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
- F16F15/133—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 using springs as elastic members, e.g. metallic springs
- F16F15/134—Wound springs
- F16F15/1343—Wound springs characterised by the spring mounting
- F16F15/13453—Additional guiding means for springs
-
- 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
- F16F15/13157—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 with a kinematic mechanism or gear system, e.g. planetary
-
- 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
- F16F15/133—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 using springs as elastic members, e.g. metallic springs
- F16F15/134—Wound springs
- F16F15/13469—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations
- F16F15/13476—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates
- F16F15/13484—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates acting on multiple sets of springs
- F16F15/13492—Combinations of dampers, e.g. with multiple plates, multiple spring sets, i.e. complex configurations resulting in a staged spring characteristic, e.g. with multiple intermediate plates acting on multiple sets of springs the sets of springs being arranged at substantially the same radius
-
- 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
- Embodiments relate to a torsional vibration damper, a dual mass flywheel and a power split torsional vibration damper system for transmitting rotational motion from a drive side to an output side.
- Such rotational irregularities can be felt, for example, in the case of a drive train of a vehicle while driving. For reasons of comfort, but also for the protection of mechanical components of the drive train, it may therefore be desirable to eliminate rotational irregularities as far as possible, or at least to damp them.
- EP 1 584 838 A1 also relates to a torsional damping damper with at least one spring device consisting of a number of spring elements for the resilient coupling of a drive-side primary element to a drive-side secondary element.
- the torsional vibration damper in this case comprises sliding blocks for spacing adjacent spring elements.
- Solutions with trapped springs or spring elements are based on the fact that steel strikes steel, which can lead to a high material load at the contact points. Consequently, this can cause abrasion and noise. In addition, it may be possible that a durability and thus a lifetime for some solutions can be improved.
- the torsional vibration damper further includes a receiving member disposed between the first and second spring members and configured to receive the first and second spring members along a circumferential direction.
- the torsional vibration damper further includes guide means connected to the receiving member and configured to guide the receiving member along a radial direction.
- the guide device and the receiving element are in this case formed as separate components. Additionally or alternatively, the guide device comprises a first material and the receiving element comprises a second material different from the first material.
- Embodiments is thus based on the finding that a compromise between wear, comfort, noise, performance of a torsional vibration damper and possibly other parameters can be improved by the fact that the guide device and the receiving element are designed as separate components. Additionally or alternatively, a corresponding improvement of this compromise can also be achieved in that the guide device comprises a first material and the receiving element comprises a second material different therefrom, or the guide device and the receiving element are made of these. This makes it possible to use a material combination that is better matched to lower wear, higher comfort, lower noise or higher performance. This can for example be the case when the spring elements of the spring assembly are also made of the first material or include this.
- Embodiments further comprise a dual-mass flywheel, for example for a drive train of a vehicle, which comprises a torsional vibration damper according to an exemplary embodiment.
- Embodiments also include a power branching torsional vibration damper system for transmitting rotary motion from a drive side to an output side, the power branching torsional vibration damper system having a first torque transmission path disposed between the input side and the output side for transmitting a first torque component, a second torque transmission path disposed between the input side and the output side Transmitting a second torque component, a coupling assembly for superimposing the first torque component and the second torque component, and a phase shifter assembly for effecting a phase shift between rotational vibrations of the rotary motion transmitted to the coupling assembly via the first torque transmission path and the rotational vibrations transmitted across the second Transmit torque transmission path to the coupling arrangement w ground, wherein the phase shifter assembly comprises a torsional vibration damper according to an embodiment.
- the drive side and the output side thereof are generally substantially inelastically coupled inelastically to the spring assembly. Therefore, no further spring elements are generally connected between the drive side and the spring arrangement and the spring arrangement and the output side. It is important in this context that this refers only to the drive side and the output side of the actual torsional vibration damper. It can of course be coupled or combined in applications with other components comprising spring elements. The same can also apply to a corresponding sliding surface.
- a torsional vibration damper may further include a sliding surface connected to the drive side or the driven side is rotatably coupled, wherein the receiving element is designed to be in contact with the sliding surface above a predetermined first threshold speed.
- the receiving element and the sliding surface can in this case enter into frictional contact with each other.
- a frictional contact is in this case when two objects, so for example, the respective receiving element and the sliding surface frictionally contact each other, so that between them a force in the case of a relative movement perpendicular to a contact surface between them.
- a speed difference so for example, a slip exist.
- a frictional contact also includes a frictional or non-positive connection between the objects in question, in which a corresponding speed difference or slip substantially does not occur.
- This is a frictional or frictional connection by stiction, a cohesive connection by molecular or atomic interactions and forces and a positive connection by a geometric connection of the respective connection partners come about.
- the static friction thus presupposes in particular a normal force component between the two connection partners.
- the receiving element may make it possible that the receiving element generates a friction between the sliding surface and the output or drive side, with which the sliding surface is not connected rotatably. Thus, a corresponding performance of the torsional vibration damper can be improved thereby.
- noise that tends to increase comfort is generated by the torsional vibration damper.
- the guide means may be configured to reduce at least above the first threshold speed of a radial force acting between the receiving member and the sliding surface. In this way it may be possible to improve the operability of the torsional vibration damper in that, as a result of the movement of the guide device above the first threshold speed on the Receiving element exerted radial force a characteristic of the torsional vibration damper is better adapted to its conditions of use.
- the second material may be formed such that when compared to a receiving member made of the first material upon contact of the receiving element with the sliding surface noise and / or friction and / or wear is reduced. This may make it possible to reduce noise, friction and / or wear of the torsional vibration damper and thus to improve the aforementioned compromise.
- the guide means comprises the first material and the receiving member comprising second material different from the first material
- the second material is a metallic material, for example a steel or a metallic alloy
- the first material is a polymeric material
- a polyamide include.
- the spring elements are made of the first material or a comparable material, that is, for example, a metallic material (eg, steel or a metallic alloy), or at least comprise a noiseless, less weary, and possibly less frictionally stressed Guide the spring elements can be achieved.
- a metallic material eg, steel or a metallic alloy
- a torsional vibration damper further comprise a centering device, which is rotatably coupled to the drive side or the driven side, wherein the centering device is formed to the Center guide device with respect to the drive side or output side.
- a centering device which is rotatably coupled to the drive side or the driven side, wherein the centering device is formed to the Center guide device with respect to the drive side or output side.
- This may possibly make it possible to simplify mounting of the torsional vibration damper.
- an unintentional contact of individual components with one another may also be avoided, which in turn optionally improves comfort and reduces noise.
- the receiving member and the guide means may be formed to exert a force directed toward the sliding surface.
- the receiving element and the guide device can be designed such that the receiving element is pressed by the guide device on the sliding surface, so that they thus exert a corresponding force executed on the sliding surface.
- a friction in the interior of the torsional vibration damper can optionally be selectively increased, whereby the performance of the torsional vibration damper can be optionally increased, for example, in some operating conditions.
- this can for example be positively influenced by the design of guide device and receiving element as separate components or by the same choice of materials.
- this may optionally enable the contact element and the sliding surface to be in contact with each other regardless of rotational speed.
- the receiving element and the guide device may be designed to prevent an incontact between the sliding surface and the receiving element at least below a second threshold speed.
- the second threshold speed may be smaller than the first threshold speed, but also, for example, with a maximum allowable speed of the torsional vibration damper match.
- a frictional contact is present in this case, for example, when the objects in question are in contact with one another, whereby a relative movement, ie in particular also a speed difference or a slip, can exist between them.
- a frictional contact is thus a special form of the frictional connection or the frictional connection, which is based on a static friction and correspondingly requires a normal component of a force. This also makes it possible, if appropriate, to improve the performance of a torsional vibration damper by, for example, reducing friction. As a result, it may be possible to also reduce wear and noise and possibly improve comfort.
- the guide means may comprise at least one connecting portion extending substantially along a radial direction, which is connected to the receiving member and has a lesser extent in a circumferential direction than in the radial direction.
- the guide means may comprise at least two substantially identical support structures connected to the receiving member along an axial direction of opposite sides of the receiving member.
- a production of a torsional vibration damper can be simplified, for example, by reducing a number of different parts.
- such a torsional vibration damper may comprise a plurality of receiving elements, wherein the spring arrangement, the plurality of receiving elements are arranged and formed such that the rotational movement is transmitted in the context of a series circuit on the plurality of receiving elements.
- the guide device can in this case be connected to the receiving elements, wherein each receiving element of the plurality of receiving elements is connected to along the axial direction of opposite sides thereof with at least one holding structure, wherein the holding structures are substantially identical.
- the plurality of receiving elements comprise at least three receiving elements, wherein the receiving elements each have at least two mutually opposite sides of the same arranged contact surfaces, which are adapted to be connected to a support structure.
- the opposite contact surfaces of the receiving elements of the plurality of receiving elements may in this case have spacings along the axial direction which correspond to values of an arithmetic sequence.
- the distances along the axial direction of the contact surfaces of the receiving elements of the plurality of receiving elements can be arranged in such ascending or descending manner, so that two arranged in ascending order and thus successive distances each differ by a constant value.
- the support structures of the at least two support structures may at least partially comprise a bearing, for example a slide bearing, configured such that adjacent support structures are guided along the axial direction.
- Adjacent are two objects, between which no further object of the same type is arranged.
- Immediately adjacent are corresponding objects when they are adjacent, that is, for example, in contact with each other.
- the support structures of the at least two torsional vibration dampers may be at least partially guided by a guide member along the axial direction, the guide member being coupled to the drive side or the driven side of the torsional vibration damper.
- the guide component can be designed, for example, as part of the centering device. This may make it possible, if necessary, to reduce friction between the support structures of the guide device and thus possibly wear and noise. Accordingly, the performance and, if necessary, the comfort of the torsional vibration damper can be improved due to a more definite onset and presence of friction.
- At least one support structure of the plurality of support structures may include a blocking portion configured to contact a plurality of support structures or another component of the torsional vibration damper above a predetermined blocking speed of the torsional vibration damper and forms with this a frictional or non-positive contact.
- a blocking portion configured to contact a plurality of support structures or another component of the torsional vibration damper above a predetermined blocking speed of the torsional vibration damper and forms with this a frictional or non-positive contact.
- a torsional vibration damper comprise a further spring assembly comprising at least a first further spring element and a second further spring element, wherein the further spring arrangement is formed and arranged to transmit the rotational movement at least partially via the further spring arrangement.
- the torsional vibration damper may in such a case further comprise at least one further receiving element which is arranged between the first further spring element and the second further spring element, wherein the guide device comprises at least one holding structure which is connected to the receiving element and the at least one further receiving element such such that the holding structure and the receiving elements connected thereto have an integral rotational symmetry and / or a point symmetry with respect to an axis of rotation of the torsional vibration damper or of a center point.
- integrally formed component is understood as one which is made exactly from a contiguous piece of material.
- integral may therefore be used interchangeably with the terms "integral” or "one-piece.”
- a mechanical coupling of two components includes both direct and indirect coupling, electrical or other components in this case indirectly coupled together via another component or directly with each other such that they allow a signal exchange between the components in question.
- the corresponding coupling sections or completely for example, implemented electrically and optically, magnetically or by radio technology and implemented.
- the individual “directions” in the present case may not necessarily be a direction in the mathematical sense of a vector, but a line along which the corresponding movement takes place. Such a line can be straight but also bent. Absky here are directions that actually describe directions along a line, such as the direction of movement. Thus, for example, a first direction may be opposite to a second direction, but both run or be directed along a line also designated as a direction.
- a component may have n-fold rotational symmetry, where n is a natural number greater than or equal to 2.
- An n-fold rotational symmetry is present when the component in question, for example, about a rotational or symmetry axis by (360 n) is rotatable and thereby essentially in terms of form passes into itself, so with a corresponding rotation substantially to itself in the mathematical sense is shown.
- the component in the case of a complete rotation-symmetrical design of a component in any rotation about any angle about the axis of rotation or symmetry, the component essentially transits itself in terms of its shape, so it is essentially mapped onto itself in a mathematical sense.
- rotational symmetry Both an n-fold rotational symmetry as well as a complete rotational symmetry is referred to here as rotational symmetry.
- FIG. 1 shows an exploded perspective view of a dual mass flywheel according to an embodiment
- FIG. 2 shows a cross-sectional view through a dual-mass flywheel according to an embodiment comprising a torsional vibration damper according to one embodiment
- FIG. 1 shows an exploded perspective view of a dual mass flywheel according to an embodiment
- FIG. 2 shows a cross-sectional view through a dual-mass flywheel according to an embodiment comprising a torsional vibration damper according to one embodiment
- FIG. 1 shows an exploded perspective view of a dual mass flywheel according to an embodiment
- FIG. 2 shows a cross-sectional view through a dual-mass flywheel according to an embodiment comprising a torsional vibration damper according to one embodiment
- FIG. 1 shows an exploded perspective view of a dual mass flywheel according to an embodiment
- FIG. 2 shows a cross-sectional view through a dual-mass flywheel according to an embodiment comprising a torsional vibration damper according to one embodiment
- FIG. 1 shows an
- FIG. 3 shows a cross-sectional representation through a power-branching torsional vibration damper system according to an embodiment, which comprises a torsional vibration damper according to an exemplary embodiment
- FIG. 4 is a plan view of the torsional vibration damper of the power split torsional vibration damper system shown in FIG. 3; FIG.
- FIG. 5 shows a cross-sectional view through a dual-mass flywheel according to an embodiment, which comprises a torsional vibration damper according to an embodiment
- FIG. 6 shows a partial section illustration through the dual-mass flywheel according to an exemplary embodiment, which comprises a torsional vibration damper according to an exemplary embodiment
- FIG. 7 shows a plan view of the dual-mass flywheel from FIG. 6 from an output side without showing a secondary flywheel and a cover plate;
- Fig. 8 shows a perspective view of the dual mass flywheel of Figures 6 and 7 without a secondary flywheel and without the cover plate.
- FIGS. 6 to 8 shows a cross-sectional view through the dual-mass flywheel shown in FIGS. 6 to 8 along a first cross-sectional plane
- FIG. 10 shows a cross-sectional view through the dual-mass flywheel shown in FIGS. 6 to 9 along a second cross-sectional plane;
- Fig. 1 1 shows a perspective view of the dual mass flywheel shown in Figures 6 to 10 without the secondary side flywheel and the cover plate.
- Fig. 12 shows a cross-sectional view through the dual-mass flywheel shown in Figs. 6 to 11;
- FIG. 13 shows, in a perspective cross-sectional view, a receiving element, trapped by a holding component, of the dual-mass flywheel shown in FIGS. 6 to 12;
- Fig. 14 is a plan view of a support structure of the dual-mass flywheel shown in Figs. 6 to 13;
- Fig. 15 is a perspective view of the support structure shown in Fig. 14;
- Fig. 1 6 shows a perspective view of the guide device and some receiving elements of the dual-mass flywheel shown in Figs. 6 to 15;
- Fig. 17 shows a further perspective view of the guide device shown in Figure 1 6 and the majority of on acquisition elements.
- Fig. 18 is a perspective view of the guide means, the plurality of receiving members and the spring assembly of the dual-mass flywheel of Figs. 6 to 17;
- Fig. 19 is an enlarged view of the arrangements shown in Fig. 18 for illustrating an insert of plain bearings in the guide means;
- Fig. 20 shows a perspective view of the spring arrangement and the receiving elements for illustrating a connection of the guide device to the receiving elements
- Fig. 21 shows a cross-sectional view through the guide means and a receiving member connected thereto;
- Fig. 22 illustrates different forces acting on a receiving element along a radial direction
- Fig. 23 illustrates an initial situation before deformation of the guide means of a torsional vibration damper according to an embodiment
- Fig. 24 illustrates a deformation of the guide means of Fig. 23 due to centrifugal forces
- Fig. 25 illustrates the guide means of Figs. 23 and 24 in a maximum deformed condition
- Fig. 26 illustrates a friction torque curve as a function of a radial force of a dual-mass flywheel without captured receiving elements
- FIG. 27 illustrates a friction torque curve as a function of a radial force according to an exemplary embodiment with captured receiving elements
- FIG. 28 is a perspective view showing an enlargement of a combined centering device and a guide member for a support structure of a guide device of a torsional vibration damper according to an embodiment
- Fig. 29 is a perspective view of the centering device of Fig. 28;
- FIG. 30 illustrates a mounting of the centering device or the guide component on a hub disc of the torsional vibration damper
- FIG. 31 shows a perspective view corresponding to FIG. 29 of a centering device which is not designed as a guide component
- FIG. FIG. 32 shows the centering device shown in FIG. 29, before sliding onto a fastening pin of the hub disk from FIG. 28;
- FIG. 31 shows a perspective view corresponding to FIG. 29 of a centering device which is not designed as a guide component
- FIG. FIG. 32 shows the centering device shown in FIG. 29, before sliding onto a fastening pin of the hub disk from FIG. 28;
- FIG. 32 shows the centering device shown in FIG. 29, before sliding onto a fastening pin of the hub disk from FIG. 28;
- Fig. 33 shows a bending apart of Verrastungsbügeln the centering device when pushed onto the mounting pin
- FIG. 34 shows a perspective view of the centering device which is pushed onto the fastening pin and connected with it in a form-fitting manner
- FIG. 35 is a plan view of a torsional vibration damper according to another embodiment.
- Fig. 36 shows a plan view of a torsional vibration damper according to one embodiment with a spring assembly comprising at least one bow spring;
- FIG. 37 shows a perspective view of a guide device with a plurality of receiving elements which have no integral rotational symmetry
- FIG. 38 shows a guide device with a plurality of receiving elements, holding structures of the guide device having a blocking section with at least one further holding structure, as used, for example, in the power-branching torsional vibration damper system shown in FIG. 4;
- Fig. 39 shows an encapsulated or molded receiving element on a support structure
- Fig. 40 is a perspective view of the support structure shown in Fig. 39;
- Fig. 41 is a perspective view of a non-captured receiving member without a support structure;
- Fig. 42 shows a perspective view of a double-layered holding structure
- Fig. 43 shows a perspective view of a holding structure based on a retaining ring
- Fig. 44 is a perspective view of a support structure having a stiffener
- Fig. 45 is a perspective view of a two-part holding structure
- FIG. 46 shows a plan view of a torsional vibration damper with receiving elements trapped on the drive side and on the output side;
- Fig. 47 shows a further embodiment of a drive side and driven side arranged captive receiving element.
- rotational uniformities which may be, for example, fluctuations in torque or speed of a shaft.
- rotational uniformities which may be, for example, fluctuations in torque or speed of a shaft.
- torque or speed of a shaft For example, in principle, in the case of the use of an internal combustion engine often no constant torque is generated during a crankshaft revolution. This can be accompanied by variations in the speed which, for example in the case of a vehicle, can be felt by the driver during driving.
- Torsional vibration dampers are often based on the fact that amounts of energy which differ from an average due to the rotational irregularities are temporarily stored as part of an energy storage and released again when needed, so that a damping of rotational irregularities, ie a more uniform energy release is possible.
- torsional vibration dampers often have spring elements which are used for temporarily storing such energy peaks.
- Torsional vibration damper according to an embodiment, as described in more detail below, can therefore be used in the context of a variety of different applications and different Torsionsschwingungsdämpfertech- nologies. These include, for example, dual mass flywheels, absorber assemblies, torque converters, electric machines, power split torsional vibration damper systems, and other similar arrangements.
- essentially torsional vibration dampers are described in the context of dual-mass flywheels and power-branching torsional vibration damper systems.
- corresponding torsional vibration damper according to an embodiment can also be used in other techniques and technologies.
- torsional vibration dampers are mainly manufactured on the basis of steel, wherein in addition to the springs and essential other components are made of steel.
- steel components often impact other steel components, which can lead to high material stress at the contact points. This can also cause abrasion and noise.
- Torsional vibration damper according to one embodiment is based, inter alia, the finding that a leadership of metal springs in metal holders or other designated as flying receptacles is therefore often unfavorable than the use of corresponding receiving elements of a polymer material, so for example corresponding plastic parts.
- corresponding receiving elements can be manufactured both on the basis of such materials both between spring elements and on the drive side or on the drive side.
- Dual-mass flywheels serve to decouple rotational irregularities in drive trains, for example in a drive train of a vehicle.
- Friction between primary-side, that is to say drive-side parts and secondary-side, that is, output-side parts, can have an adverse effect on the ability of the torsional vibration damper to decouple or dampen the rotational irregularities.
- a friction between the spring plates and sliding shoes on the one hand and the primary flywheel of such a dual mass flywheel on the other hand can result in a not insignificant influence.
- FIG. 1 shows an exploded perspective view of a torsional vibration damper 100 according to an exemplary embodiment, which is more specifically a dual-mass flywheel 110.
- the dual-mass flywheel 1 10 in this case has a primary flywheel 120, which is designed to be pot-shaped.
- a spring arrangement 130 is arranged with a plurality of spring elements 140, wherein the spring elements 140 are arranged such that a rotational movement introduced by the primary flywheel 120 into the torsional vibration damper 100 via the spring elements 140 in the sense of a series connection of a drive side 150th , which is also referred to as an input side, to an output side 160 of the dual-mass flywheel 1 10 or Torsionsschwingungsdämpfers 100, which is also referred to as the output side.
- the spring arrangement 130 is in this case essentially inelastically or inelastically coupled to the drive side 150 and the output side 160 of the torsional vibration damper 100 itself.
- the torsional vibration damper 100 in FIG. 1 has two spring assemblies 130, 130 'coupled in parallel with each other between the drive side 150 and the driven side 1 60 of the torsional vibration damper 100.
- Each of these spring assemblies 130, 130 ' comprises a plurality of spring elements 140, wherein for ease of illustration in Fig. 1, only the spring elements 140 of the spring assembly 130 are designated by individual reference numerals.
- the spring arrangements 130 each comprise five spring elements 140-1, 140-5, which may be identical or different from each other.
- the spring element 140-2 has a smaller diameter of a spring wire than the other spring elements 140-1, 140-3, 140-4, 140-5 of the spring arrangement 130.
- the spring element 140-2 therefore has a softer spring characteristic than the others Spring elements 140 of the spring assembly 130th
- spring elements 140 shown in FIG. 1 are helical or barrel springs
- pneumatic spring elements or those based on an elastic polymer, for example rubber are biased in this case so as to reduce or prevent noise at low speeds and / or low load conditions (eg, when the internal combustion engine is idling).
- the spring elements, as shown in Fig. 1, are implemented as helical compression springs.
- the rotational movement introduced on the input side into the torsional vibration damper 100 is transmitted from the primary flywheel 120 via a respective engagement structure 180 to a receiving element 190-1 of the torsional vibration damper. damper 100 transmitted.
- the rotational movement 170 may in this case represent a tensile or a thrust movement.
- the receiving element 190-1 which on the drive side is in contact with the first spring element 140-1, is also referred to as a spring plate due to this exposed position. Also, the receiving element 190-6 is called due to its output side arrangement as a spring plate, while the other receiving elements 190-2, 190-5 are also referred to as sliding shoes. Between each two spring elements 140, a further receiving element 190-2, 190-5 is then arranged in each case, wherein the receiving element 190-5 is in contact with the fifth spring element 140-5. In addition, the fifth spring element 140-5 is also in contact with a receiving element 190-6, which in turn is in contact with a hub disc.
- the hub disc 200 Via a fastening structure 210, the hub disc 200 is connected to a secondary flywheel 220, so that the rotational movement is transmitted from the hub disc 200 via its internal teeth 210 on the secondary pulley 220 and thus on the output side 160 of the torsional vibration damper 100.
- the receiving elements 190-2, 190-5 are in this case mechanically connected to a guide device 230, wherein the guide device 230 is formed to guide the receiving elements 190 along a radial direction.
- the guide device 230 is formed to guide the receiving elements 190 along a radial direction.
- these can come into contact, for example, with a sliding surface 240, which is formed on an inner surface of the primary flywheel 120 oriented along a circumferential direction and an axial direction, with a corresponding counter sliding surface 250.
- the receiving elements 190 can come into frictional contact with respect to the primary flywheel 120 and thus develop friction for damping movement of the spring arrangement 130 or the corresponding spring arrangement 130 '.
- the guide device 230 can restrict a movement of the receiving elements 190 along the radial direction, which is why the arrangement of spring Arrangement 130, 130 ' , the receiving elements 190 and the hub disc 200 is also referred to as captive spring set with hub disc.
- the cover plate 270 is in this case connected to the primary flywheel 120 - for example by welding.
- the cover plate 270 also comprises corresponding engagement structures 180 for transmitting the rotational movement to the receiving elements 190.
- the secondary flywheel 220 can then be connected to other components, for example a drive train of a vehicle.
- FIG. 2 shows a cross-sectional view through a torsional vibration damper 100 or a dual mass flywheel 110 perpendicular to a rotation axis 290.
- the drive side 1 50 ie the primary flywheel 120
- the hub disk 200 is connected to the secondary flywheel 220, that is to say the output side 1 60, via a further rivet connection 320.
- the friction between the drive side 150 and the output side 1 60 can have a disadvantageous effect on the decoupling of the rotational irregularities.
- the friction between the different receiving elements 190 (spring plate and sliding shoes) on the one hand and the primary flywheel 120 on the other hand can have a not insignificant influence.
- embodiments can now make it possible to reduce the friction between the receiving elements 190 on the one hand and the primary flywheel 120 on the other hand to a minimum, and to prevent wear and thus to achieve an optionally improved decoupling with respect to rotational irregularities.
- a base in this case represents a dual-mass flywheel 1 10, as shown in FIGS. 1 and 2, and in which the receiving elements 190-2, 190-5 are caught by the guide device 230.
- the structure may be multi-part and include, for example, holding structures in the form of retaining plates. These can be connected to, for example, two opposing receiving elements 190 (sliding blocks) on a respective connecting element, so for example a rivet.
- a corresponding number and design of the guide device also referred to as catching device, can be selected here.
- the spring-holding receiving elements 190 are thereby caught by the guide device 230, which prevents the contact of these elements or the springs with the slide or sliding surface 240 or limited to a speed range above a threshold speed.
- an influence of a resulting normal force on the sliding surface 240 which is caused by the resulting centrifugal force and the radial spring force component, may be maintained at a lower level, despite contact of the receiving elements 190 with the sliding surface 240. In this way, a corresponding friction of the receiving elements 190 with respect to the sliding surface 240 and thus a damping can be reduced.
- the exact adjustment of the prevailing friction or damping can be defined essentially freely by a corresponding configuration of the guide device 230.
- the guide device 230 exert a force directed onto the sliding surface 240, so that a prevailing friction can optionally be intensified thereby.
- a guide device 230 can thus not only serve to catch a receiving element 190.
- the dual-mass flywheel 110 and other torsional vibration damper 100 is always referred to in the present description of a drive side 150 and a driven side 160, typically in such a torsional vibration damper 100, the direction of the torque flow can be reversed.
- the sliding surface 240 not only on the drive side, but on the output side with a corresponding component, so for example a correspondingly configured hub disc 200 are coupled.
- the spring assemblies 130 may well be implemented with different numbers, configurations, and design of spring members 140 than the five spring members described herein having two different spring characteristics.
- a torsional vibration damper 100 in connection with a dual-mass flywheel Before, however, further embodiments of a torsional vibration damper 100 in connection with a dual-mass flywheel are to be described in connection with the figures from FIG. 6, the use of a torsional vibration damper 100 will first be described in the context of a power-branching torsional vibration damper system.
- a rather low speed range occurs due to increasing stimulation. and economic and ecological framework conditions. These include, for example, requirements due to the so-called down-speeding, ie a reduction of engine speeds to reduce friction losses in the internal combustion engine, and / or a down-sizing, so reducing a number of cylinders of an internal combustion engine, also to reduce friction inside it .
- the aforementioned lower speed range often extends from an idling speed of about 500 rpm to speeds of about 1400 rpm.
- FIGS. 4 An embodiment of a power-branching torsional vibration damper system 400, which is also referred to as a power split system for short, will be described below in conjunction with FIGS.
- This can be made possible by a variation of the torsional stiffness of the torsional vibration damper 100 and a corresponding dual mass flywheel 1 10 a speed matched optimization of the vibration isolation.
- By a corresponding adaptation it may for example be possible to implement a speed-adaptive and / or load-adaptive torsion spring stiffness in the spring arrangement 130.
- the operating principle of a power split to reduce rotational irregularities which will be described below, remains fundamentally unaffected.
- FIG. 3 shows a half section through a power-branching torsional vibration damper system 400, which is also referred to below as a power split system 400 and comprises a torsional vibration damper 100 according to one exemplary embodiment.
- the power split system 400 serves to transmit a rotational movement from a drive side of the power split system 400, which coincides with the drive side 150 of the torsional vibration damper 100, to an output side 405 of the power split system 400.
- the power split system is based on the principle of power split. This means that the power split system 400 has a first torque path 410 and a second torque path 420, which are merged in a coupling arrangement 430 and combined with each other.
- the first torque transmission path 410 is hereby configured to transmit a first torque component from the drive side 150 to the output side 405, while the second torque transmission path 420 is configured to transmit a second torque component of the rotary motion from the drive side 150 to the output side 405.
- the torque components transmitted via the two torque transmission paths 410, 420 are superimposed in the coupling arrangement 430, which in the present case is formed by an arrangement of intermeshed, meshed and rotatably mounted gears and modeled on a planetary gear train, so that on the output side it is connected to a driven side connected to the coupling arrangement 430
- Component which in turn may be a secondary flywheel or a secondary flywheel 220, the entire transmitted torque can be tapped.
- the secondary flywheel 220 forms the output side 405 of the power split system 400.
- the torque to be transmitted is the sum of the two torque components transmitted via the two different torque transmission paths 410, 420. A sum of the two thus represents the total transmitted torque.
- phase shifter assembly 440 Disposed in the first torque path 410 is a phase shifter assembly 440 which effects a phase shift between torsional vibrations transmitted to the coupler assembly 430 via the first torque path 410 and the torsional vibrations transmitted to the coupler assembly via the second torque transfer path 420.
- the phase shift is in this case achieved in that in the first torque transmission path 410, a vibratory system is arranged, via which the first torque component is transmitted and which has a resonant frequency which is below a characteristic frequency of the torsional vibrations.
- the characteristic frequency may in this case be, for example, an idling speed of the engine of the powertrain of the vehicle, if such is to be implemented in the context of the power split system 400.
- the excitation or torsional vibration applied to an input of the oscillatory system is out of phase with the oscillation obtained at the output of the system concerned.
- the phase shift from the resonance frequency is 180 °.
- FIG. 4 shows a plan view of the torsional vibration damper 100 or the phase shifter arrangement 440.
- the drive side 150 of the torsional vibration damper 100 which is also the input side or drive side of the power split system 400 and configured as a cup-shaped member 450
- the rotational movement - as already explained in connection with FIG. 1 - about in Figs. 3 and 4 not shown engagement structures 180 on the spring assembly 130 and the further spring assembly 130 'transferred, which in turn each have a plurality of spring elements 140, which differ from the spring elements 140 shown in Fig. 1 with respect to their arrangement only in that it is in the present case are concentrically designed spring elements 140, in which an inner spring is enclosed by an outer spring.
- the two springs are designed here as spiral or barrel springs.
- the pot-shaped component 450 which is also referred to as the primary mass, in this case is screwed to a cover plate 460, so that a volume forms between the cover plate 460 and the component 450, in which the spring arrangement 130 as well as the receiving elements 190 and the hub disc 200 of the torsional vibration damper 100 are arranged.
- the guide device 230 is arranged, which is connected to at least some of the receiving elements 190 in the context of the power split system 400 shown in FIGS. 3 and 4.
- a receiving element 190 is arranged in each case.
- the receiving elements 190-1 and 190-6 again represent the connection of the spring arrangement 130 to the drive side 150 and the output side 1 60 of the torsional vibration damper 100.
- the torsional vibration damper 100 also has a guide device 230, which is mechanically coupled to the receiving elements 190-3, 190-4 and 190-5.
- the guide device 230 is again designed to guide the receiving elements 190-3, 190-4, 190-5 connected to it along the radial direction.
- FIG. 39 shows a perspective view of the guide device 230 and the receiving elements 190 connected thereto.
- the receiving element 190-2 is not connected to the guide device 230 and is therefore also referred to as a free sliding shoe.
- the receiving element 190-5 is designed with a lower rigidity than is the case, for example, with respect to the receiving elements 190-3 and 190-4 ,
- a rotational movement coupled into the power branching system 400 on the input side is thus arranged via the component 450, which simultaneously also represents the drive side 150 of the torsional vibration damper 100, via the engagement structures 180, not shown in FIGS. 3 and 4, to the spring arrangements 130 with their spring elements 140 and the corresponding ones Transfer elements 190. From there, the rotational movement is transmitted to the hub disc 200 and further via the attachment structure 210 to the coupling assembly 430.
- an intermediate mass 470 is also connected, with which a driving ring gear 480, designed as a planetary gear coupling arrangement, is screwed.
- the drive ring gear 480 engages a plurality of stepped planet wheels 490, which in turn are rotatably mounted on a planet carrier 500.
- the planet gears 490 are in this case connected via bearings 510, which are configured in the present case as a needle bearing rotatably connected to the planet carrier 500. Of course, however, other bearings can be used at this and in other places.
- the rotational movement is then transmitted via the planet gears 490 to a driven ring gear 520, with which the stepped planet wheels 490 are also engaged.
- the output ring gear 520 in this case has a smaller inner diameter than the drive ring gear 480.
- the output ring gear 520 is then bolted to the secondary flywheel 220 via a sealing plate 530.
- the second torque transmission path 420 runs in this case, bypassing the phase shifter 440.
- the planetary carrier 500 is rotatably screwed to the component 450.
- the second portion of the rotational movement of the component 450 is transmitted directly to the planet carrier 500 and via this and the planet carrier 500 rotatably connected planetary gears 490 also on the output ring gear 520 and on to the secondary flywheel 220.
- FIGS. 3 and 4 The structure of the overall system of the power split system 400 is shown in FIGS. 3 and 4.
- the receiving elements 190-1, 190-6 (spring plate) are connected to the spring assembly 130 via the hub disc 200 at also referred to as Hohlradumble intermediate mass 470 connected.
- the further receiving elements 190-2, 190-5 (sliding blocks) can be executed via the guide device 230, which is also referred to as "flyer” in comparison to a free and therefore frictional receiving element 190 rubbing from a threshold speed, friction or even frictionless
- the intermediate mass 470 is the drive ring gear 480.
- the planet carrier 500 is screwed directly to the component 450.
- This carries the stepped planet gears 490, wherein the output ring gear 520 is in operative connection with the stepped planetary gears 490.
- the sealing plate 530 and the secondary flywheel 220 is connected to the output ring gear 520.
- a dry clutch may optionally be provided as the output element.
- the output can also be connected, for example, by means of a wet-running or dry-running single, multiple or double clutch, a transmission input shaft or a torque converter.
- FIG. 5 shows a cross-sectional illustration through a torsional vibration damper 100 according to an exemplary embodiment, which in turn is in turn a two-mass flywheel 110.
- the illustration of the torsional vibration damper 100 in Fig. 5 differs from that in Fig. 2 essentially in that on the one hand, the sealing plate 260 is not implemented, but in its place the cover plate 270 has an axially extending portion through which a Gap seal with respect to the hub disc 200 is formed.
- the gap seal was formed between the sealing plate 260 and the cover plate 270, since the sealing plate 260 is non-rotatably connected to the hub disc 200 via the further rivet connection 320.
- FIG. 5 shows schematically the guide device 230 and its connection to the receiving elements 190.
- the guide device 230 comprises a plurality of holding structures 610-1, 610-6 which are offset along the axial direction, ie along the axis of rotation 290 are.
- the guide device 230 in the present embodiment comprises three holding structures 610-1, 610-2, 610-3 and 610-4, 610-5, 610-6, which are on both sides of the hub disc 200 are arranged. Of these, in each case a holding structure 610 is connected from both sides of the hub disc 200 to a receiving element 190, wherein this connection can take place, for example, via a rivet connection 620.
- the holding structures 610 are designed as holding plates and lie against a receiving element 190 on a contact surface 630 on both sides of the hub disc 200.
- the rivet connection 620 for fastening the holding structures 610 to the receiving element 190 likewise takes place in the region of the contact surfaces 630.
- the guide device 230 thus comprises a total of three pairs of holding structures 610-1, 610-4 and 610-2, 610-5 and 610-3, 610-6 three receiving elements 190 can be guided along the radial direction.
- the holding structures in the embodiments shown here are designed essentially identical, so that a production of a torsional vibration damper 100 according to an embodiment may optionally be simplified in that a number of different parts can be reduced. Likewise, this may possibly reduce the risk of incorrect assembly.
- the representation of the individual retaining structures 610 differs from one another only because of the position of the sectional plane of FIG. 5.
- FIG. 6 shows a partial sectional view of the dual mass flywheel from a transmission side, ie from the output side 1 60, in which the secondary flywheel 220 is partially shown
- Fig. 7 shows the dual mass flywheel 1 10 from the side of the transmission, so from the output side 1 60 without the secondary flywheel 220 and the cover plate 270.
- Fig. 8 shows the dual mass flywheel 1 10 without the secondary flywheel 220 and the cover plate 260, however Here a perspective view was chosen.
- the torsional vibration damper shown here again has two point-symmetrical or mirror-symmetrical, 180 "staggered spring arrangements 130, 130 ', which in turn each comprise five spring elements 140-1, 140-5 .
- the spring elements 140 are in this case arranged as one another screw or Barrel springs implemented, wherein the spring element 140-2 compared to the other spring elements has a diameter of the spring wires used, which is lower than that of the other spring elements 140.
- the spring element 140-2 compared to the other spring elements to a softer spring element, which is why this is also referred to as a "soft spring member", while the other spring elements are designated 140 as the "hard spring elements.” again, the spring elements can be mounted biased in compression and so for example, comprise one or more helical compression springs 140 again.
- the spring arrangements 130 are adjoined in each case on the drive side 150 and the output side 1 60 by a receiving element 190 - 1 or 190 - 6 (spring plate), via which the rotational movement can be introduced into or out of the spring arrangement 130.
- a receiving element 190-2, 190-5 arranged, which in turn are designed to receive the adjacent spring elements 140 and pass on forces exerted by these forces to the respective adjacent spring elements.
- the two drive-side or driven-side receiving elements 190-1, 190-6 and the receiving element 190-2 are configured here as non-captured receiving elements 190. In contrast to the other receiving elements 190-3 to 190-5, they have no mechanical connection to the likewise implemented guide device 230.
- An embodiment as captured receiving elements 190 is shown for example in FIGS. 45 and 46.
- the receiving elements 190-3, 190-4 and 190-5 are trapped receiving elements 190, which are mechanically connected to the guide device 230.
- the guide means 230 for each of the captured receiving elements 190 comprises two holding structures 610, which are arranged along the axial direction 290 on opposite sides of the hub disc 200. Again, these are in turn designed as holding plates which are in contact with respective contact surfaces 630 of the receiving elements 190 and are connected via a rivet connection 620 with the respective receiving element 190.
- the holding structures 610 are in the embodiment shown here - as previously mentioned - pronounced as a substantially sheet-like structures, which is why they are also referred to as holding plates.
- the holding structures 610 have an annular section 640, at which a connecting section 650 facing the respective receiving element 190 adjoins.
- the connecting portion 650 and the annular portion 640 are connected to each other, even integrally formed in the present embodiment.
- the connecting section has a greater extent or extent along the radial direction than along the circumferential direction and the axis of rotation 290. This makes it possible that the connecting portion 650 is elastically deformed under appropriate load by a centrifugal force acting on it and thus exerts a force on the receiving member 190 connected to it.
- the guide device 230 is therefore also referred to as a catching device in such a case.
- the connecting section 650 may also be possible to design the connecting section 650 such that it already exerts a radial force on the receiving element 190 when the torsional vibration damper 100 is at a standstill. so that it is pressed or pressed against the sliding surface 240.
- the guide device 230 is also referred to as a pressing device.
- a torsional vibration damper 100 not only the number and arrangement of the spring elements, but also the design of the guide means 230 may differ from the embodiment shown here.
- the number of captured receiving elements 190 and their arrangement along the circumferential direction of the torsional vibration damper may differ from the configuration shown here.
- connection 620 instead of the rivet connections shown here, for example the rivet connection 620, other non-positive, positive and / or cohesive connection techniques may also be used, as will be explained in more detail in the further course of the present description.
- the corresponding receiving elements 190 can also be locked or clipped, glued, welded, screwed or otherwise mechanically connected to the guide device 230.
- the selection of the connection technique used can be done by a variety of different parameters, such as a desired life, effort in terms of creating the relevant compound, costs and other factors.
- FIG. 8 furthermore shows the elastic coupling element 310, which is also referred to as an attachment plate and for connecting the torsional vibration damper 100 to a crankshaft of an internal combustion engine or another drive shaft, due to its perspective representation of the torsional vibration damper 100 can be used. This is hidden in FIGS. 6 and 7 by the torsional vibration damper 100.
- the elastic coupling element 310 can be used here to compensate for an axial distance between the internal combustion engine and the torsional vibration damper 100 as well as to compensate for or at least partially compensate for wobble oscillations or movements.
- FIG. 8 shows an implementation of a bearing 660 which decouples the output side 160 from the drive side 150 in a rotational manner along the axis of rotation 290.
- the bearing 660 is designed here as a multi-row, more precisely as a three-row ball bearing.
- the guide device 230 comprises a plurality of holding structures 610, also referred to as connecting elements, which can be designed, for example, as substantially annular holding plates or else multi-part constructions.
- the respective retaining structures 610 connect opposing receiving elements 190 (sliding shoes) with each other via their resilient action of the connecting portions 650.
- the radial forces of the opposing receiving elements 190 may be possible for the radial forces of the opposing receiving elements 190 to approximately compensate due to an equilibrium of forces forming, thus resulting in self-centering of the guide device 230.
- the receiving elements 190 which are also referred to as sliding elements
- the sliding surface 240 it may be advisable to design the retaining structures 610 with a sufficient rigidity in order to minimize radial deformations occurring as far as possible.
- this manufacturing tolerances and other unwanted parameters influence fluctuations in the gap between the sliding surface 240 and the captured receiving elements 190 have. It can It may be advisable to keep the manufacturing tolerances as small as possible within the framework of an overall weighing.
- the embodiment of a torsional vibration damper 100 shown in FIGS. 6 to 8 has three captured receiving elements 190 per side.
- the spring elements 140 of the spring assembly 130 are hereby arranged according to the scheme HWHHH, where H denotes a hard spring element 140 and W a soft spring element.
- the spring element 140-2 is designed as a single spring element as a soft element.
- the captured receiving elements 190 are in this case arranged between the adjacently arranged hard spring elements 140-3, 140-4 and 140-5 and between the soft spring element 140-2 and the adjacent hard spring element 140-3.
- the operability of the dual mass flywheel 1 10 depending on the application can be further improved.
- a corresponding arrangement of the spring elements 140 of those of an automatic transmission, a dual-clutch transmission or a hybrid drive can be changed.
- the corresponding receiving elements 190 (sliding shoes) with respect to the direction of movement in the dual mass flywheel 1 10 may be arranged in front of the corresponding spring elements 140 of the drive stage.
- one or more spring elements 140 can also be used as start-up spring elements which serve to prevent the system from starting at an engine start and the associated passage of the resonance speed, which is typically below the idling speed rises high. In such a case, it may therefore be advisable to design the relevant starting elements 190 of the spring elements 140 of the starting stage with a corresponding friction. This makes it possible to minimize the amplitude of the corresponding vibrations when passing through the resonance speed of the dual-mass flywheel 1 10 by the friction, ie by a corresponding damping.
- At least one spring element 140 which serves for overload protection of the torsional vibration damper 100 and the dual mass flywheel 1 10. This can be designed, for example, such that it is completely compressed or arrested only when it concerns a 1.3 times to 1.5 times a maximum engine torque.
- the spring elements 140 of the drive stage may be designed to be up to 1.3 times to 1.5 times the maximum engine torque, since these are responsible for the travel decoupling.
- they can also assume the function of the stop step and thus serve the step of the torsional vibration damper 100.
- a friction of the error elements 140, which are exclusively responsible for the gear, should therefore tend to be made rather low, which is why they can be supported for example via a corresponding captive receiving element 190.
- the spring elements 140 of the starting stage should build up friction at engine start, as in such a case, if necessary, a resonance damping is necessary, which is why this example as not captured recording elements 190 or even as pressed or pressed Receiving elements 190 can be implemented.
- a spring element 140 which is mainly, essentially exclusively or Finally, serves as a stop spring, so only a stop moment to cover the protection of the torsional vibration damper 100 should cover to avoid voltage spikes, it may therefore be advisable to design this with a corresponding friction.
- the number of captured receiving elements can correspond to a number of the corresponding spring elements 140 of the driving gear less 1.
- this rule of thumb also deviates, whereby, if appropriate, better matching to the requirements of an application can be achieved.
- the guide device 230 may be interesting to at least partially configure the guide device 230 such that it presses or presses the receiving elements 190 against the sliding surface 240.
- the receiving element 190 and the guide device 230 can be designed such that the guide device 230 effects a force on the sliding surface 240 independently of the rotational speed of the receiving element 190.
- the speed step spring elements 140 can be kept away from the sliding surface 240 in such a case by pulling holding structures 610, so for example pulling holding plates and thus work without friction or friction. Independently of this, the holding structures 610 hold or guide the receiving elements 190 even when the design is pressing.
- the receiving elements 190 are caught in pairs but independently of adjacent or adjacent receiving elements 190.
- a variable catching of the receiving elements 190 may be possible so that any necessary friction, as may be the case for example in the case of the starting stage, can be generated.
- the friction may be necessary for the starting stage, because the natural frequency of the dual-mass flywheel is driven through at engine start and an extreme swinging by friction, a corresponding damping can be prevented.
- the natural frequency is typically not traversed, since this is often well below the idle speed of the dual mass flywheel 1 10. Therefore, typically no friction or damping is needed in the drive stage.
- FIG. 9 and Fig. 10 show cross-sectional views through the dual-mass flywheel 1 10 and the corresponding torsional vibration damper 100, as has already been shown in Figs. 6 to 8.
- FIG. 9 shows a cross-sectional view along a sectional plane intersecting the hub disc 200 between the adjacent receptacles 190.
- Fig. 10 shows a cross-sectional view through the corresponding dual mass flywheel 1 10 by a captured receiving element 190th
- FIG. 9 illustrates an interaction of the engagement structures 180 of the primary flywheel 120 and the cover plate 270 with the receiving element 190 '- 6 associated with the spring arrangement 130 ' .
- Fig. 9 shows that the engagement structure 180 - depending on the direction of rotation or depending on the relative direction of rotation relative to a prevailing rotational movement - with the respective receiving element 190'-6 can communicate so as to pass the introduced into the drive side 150 rotational movement to the corresponding spring assembly 130 'on.
- the spring arrangement 130 ' is also referred to here as a further spring arrangement 130 ' .
- FIG. 9 again shows an arrangement of the holding structures 610 of the guide device 230.
- FIG. 10 shows more clearly the interaction of the holding structures 610, in particular of the holding structures 610-3, 610-6 of the guide device 230 with the receiving element 190-3 of the torsional vibration damper 100.
- FIG. 10 shows that the holding structures 610 with the Contact surfaces 630 are in contact and mechanically connected via a rivet 620 with the respective receiving element 190-3.
- FIG. 10 illustrates that the holding structures 610 are in contact with the contact surfaces 630 in the region of a respective recess 670 of the receiving elements 190.
- FIG. 10 also shows that the connecting portions 650 of the support structures 610 are connected to the annular portions 640 of the support structures 610 and that the substantial radial guidance is via the connection portions 650.
- FIG. 1 1 shows a perspective sectional view through the dual mass flywheel 1 10, as it was previously shown in connection with Figs. 6 to 10. To improve the representation here, the secondary flywheel 220 and the cover plate 270 is not shown. The cutting plane in this case runs along the radial direction and the axis of rotation, ie the axial direction. It is just placed so that in turn the receiving element 190-3 is cut. 1 1 shows the area and the internal structure of the receiving element 190-3, as well as its holding structures 610-3 and 610-6 of the guide device 230 connected thereto.
- FIG. 11 illustrates the arrangement of FIGS other components of the dual mass flywheel 1 10 in relation
- Fig. 1 1 1 by way of example to the support structures 610-3 and 610-6 that they lead in the embodiment shown here by 180 ° rotated or diametrically opposite receiving elements 190 radially.
- the holding structures 610 are arranged along the axial direction 290 on both sides of the receiving elements 190 and the hub disc 200, respectively.
- a holding structure on both sides of the hub disc 200 and the respective receiving element 190 is used here for the radial guidance of the same.
- FIG. 12 shows a plan view of the guide device 230 and the receiving elements 190-3, 190-4 and 190-5 connected thereto.
- the receiving element 190-3 is in this case guided radially by the support structures 610-3 and 610-6 axially facing each other closest to one another. Accordingly, the contact surfaces 630 of this receiving element 190-3 at a distance a from each other.
- the respective holding structures 610 rest against the respective contact surfaces 630 of the receiving element 190 and are mechanically connected to the receiving element 190 by a corresponding rivet connection 620.
- the adjacent receiving element 190-4 is in this case guided by holding structures 610-2 and 610-5 of the guide device 230, which are arranged along the axial direction 290 between the holding structures 610-3 and 610-1 and 610-6 and 610-4.
- the receiving element 190-4 is thus connected by the middle holding structures 610 along the axial direction. Its associated abutment surfaces, via which again the holding structures 610 abut the receiving element 190 and are connected to the latter via the corresponding rivet connection 620, have a spacing along the axial direction 290 (a + x).
- the receiving element 190-5 is guided by the axially most distant holding structures 610-1, 610-4 of the guide device 230.
- the corresponding holding structures 610 lie against the abutment surfaces 630 of the holder. meelements 190-5.
- the holding structures 610-1, 610-4 in this case have a distance along the axial direction 290 from each other, which is (a + 2x).
- the distances of the support structures 610 and the contact surfaces 630 of the receiving elements 190 are thus just dimensioned so that they can be arranged according to an arithmetic series. That is to say the respective distance values a, (a + x), (a + 2x) and optionally further distances can be arranged in such a way that they differ from each other by a substantially identical value.
- This value also referred to as the difference value, in the present case is x. In this way, it may be possible to use a limited installation space as efficiently as possible in such a way that a probability of contact between the individual support structures 610 with one another is reduced.
- abutment surfaces 630 are here formed on a flank of the recesses 670 running parallel to the radial direction and, depending on the receiving element 190, each have a spacing of a, (a + x) and (a + 2x).
- the axial distances of the support structures 610 to one another over a thickness of the receiving elements 190 (sliding shoes) on the recessed contour, ie its recesses 670 for receiving the support structures 610 can be defined.
- the distance between the holding structures 610 to each other can be chosen so that, if possible during operation no contact with other components even in the case of buckling of the support structures 610 or axial displacement occurs.
- FIG. 13 shows an enlarged view of the torsional vibration damper 100 or the dual mass flywheel 110 from the preceding FIGS. 6 to 12 in the region of the receiving element 190-3.
- FIG. 13 again shows the receiving element 190-3 with its essentially T-shaped recess 670 and the two holding structures 610-3, 610-6 of the guide device 230 for connecting the same.
- the spring element 140-2 is designed as a soft spring element
- the spring element 140-3 (not shown in FIG. 14) arranged adjacently on the opposite side of the receiving element 190-3 constitutes a hard spring element.
- the two spring elements 140-2, 140-3 are therefore different weight due to the different spring wire thicknesses. Therefore, due to different high centrifugal forces during operation of the dual mass flywheel 1 10, for example, due to a different heavy design of the spring elements 140-2, 140-3 on both sides of the receiving element 190-3 (shoe) a tilting moment arise, which of the support structures 610-3 , 610-6, since a support on the slide or sliding surface 240 can not or should not.
- the holding structures 610-3, 610-4 are configured accordingly T-shaped in this area, so that the respective tilting moment can be absorbed by the holding structures 610 by positive locking.
- a corresponding tilting moment for example, be absorbed by a form rivet.
- additional masses may be provided on the receiving elements 190 and / or on the support structures 610 for mass balance, so that in such a case, if necessary, the emergence of tilting moments can be completely prevented, but at least reduced. This can it may be possible to realize an identical load for all support structures 610.
- FIG. 13 furthermore illustrates, on the captured receiving element 190-3, that when the dual-mass flywheel 110 or the torsional vibration damper 100 stops, a distance d between the counter-sliding surface 250 of the receiving element 190-3 and the sliding surface 240 on the inner wall of the primary flywheel 120 is present. In other words, there is air between the respective receiving member 190 and the sliding surface 240.
- FIG. 14 and 15 show a plan view and a perspective view of a support structure 610, which is designed as a holding plate.
- the support structure 610 has an extension along the axial direction 290 that is smaller than those along the circumferential direction and the radial direction.
- a support structure 610 can be produced, for example, by stamping or another production method with the aid of which sheet-like materials can be processed.
- the holding structures 610 further comprise a transverse structure 680 in an area to enhance the uptake of the tilting moments described above. which is designed to come into contact with the receiving element 190 and / or to be attached thereto.
- the holding structure 610 further has an opening 690 in this area, which is configured with regard to its shape and configuration so that it can receive the rivet connection 620.
- the opening 690 may thus be designed, for example, round, but also differently. However, to accommodate the rivet connection 620, it may be appropriate to design these as a continuous opening 690.
- transverse structure 680 and the opening 690 another form for absorbing tilting moments can also be implemented, if such is necessary at all.
- opening 690 it may be possible to replace the opening 690 to provide a different structure for connecting the support structure 610 with the corresponding receiving element 190.
- the support structures 610 optionally have at least one, in the present case four, further openings or bores 700, which can be used, for example, to guide the support structures 610 relative to each other. As illustrated in FIG. 14, these further openings 700 are each arranged at an identical angle ⁇ relative to an axis of symmetry 710, the axis of symmetry 710 illustrating a twofold rotational symmetry or a point symmetry of the holding structure 610 in the present exemplary embodiment.
- the angle ⁇ can in this case be arranged such that the further openings 700 are arranged in so-called neutral zones in which the smallest possible deformation or deformation of the holding structures 610 occurs. In this way, it may be possible, if necessary, to center the holding structures 610 on each other or to guide them relative to one another by means of the further openings 700 mounted thereon, so that even in the case of deformation or deformation of the holding structures 610, in particular the connecting structures 650, centering or Leadership of the same is still possible.
- angle a that is to say the angle of the arrangement under which the further openings 700 are arranged, to values between 20 ° and 70 ° or between 30 ° and 60 °, that is to say, for example, to approximately 45 ° ,
- FIG. 16 particularly shows a further opening 700 in the holding structure 610-1 as well as a further opening 700 in the holding structure 610-6.
- These two further openings are (still) not equipped with a bearing 720 in the representation selected here, which can be designed, for example, as a plain bearing 730.
- the plain bearings 730 can in this case be designed as plastic slides 750, which each have at least one sliding surface 760, which are designed to come into frictional contact with an adjacent holding structure 610 and thus allow an axial guidance of the respective holding structures 610 to one another.
- the plastic slider 750 as shown in Fig. 1 6, moreover, a connection structure 770 which is formed with respect to their diameter and height above a surface 780 such that the plastic slider 750 inserted into the further opening 700 and fastened there is.
- the plastic slider 750 for example, in the region of the connecting structure 770 have a slot or a Phillips, so that the connecting structure 770 is compressible by a mechanical stress.
- a non-positive and / or positive connection of the bearing 720 with the corresponding holding structure 610 can be created.
- an axial spacer between the support structures 610 may also be a plastic clip, which is pluggable into the other openings or holes 700, a plastic ring or other spacers can be used.
- centering of the support structures 610 at the neutral points may also be appropriate.
- a compound in the form of radial and / or thrust bearings with the ring gear and / or the primary flywheel 120 and the cover plate 270 may be used.
- Another possibility is a radial or axial bearing by means of a connection of the support structures 610 with each other by plug-in plastic guides, so for example the plastic conductor 750, which can be attached to the ring gear or on the primary side (drive side 150). These can also take over the axial positioning of the support structures 610.
- connection types can be used for example clipping, gluing, plugging, encapsulation, screws and any other connection technology.
- a plastic can be used, which has a sound-absorbing property.
- the spacer may also be designed, for example, as a plastic ring, which is attached to the support structures 610. If necessary, this can also be used for centering and absorb radial forces.
- FIG. 17 shows a perspective view of the guide device 230 and the receiving elements 190 connected to it.
- the symmetry axis 710 is again drawn, as well as the position of the further openings 700 with respect thereto.
- the further openings 700 are arranged here at the angle ⁇ . However, they can also be arranged under individual angles if necessary.
- FIG. 17 also shows, however, that the receiving elements 190 along the circumferential direction of the torsional vibration damper 100, ie perpendicular to the axis of rotation 290, recesses 790 have been designed in terms of their shape so that they can accommodate the spring elements 140, not shown in FIG. 17 ,
- the recesses 790 can also show a perspective view of the catching device 230 and the receiving elements 190 connected to it, for example, have a concave shape, so that a cylindrical or barrel-shaped Spring or a corresponding spring element 140 in the recesses 790 is easily inserted.
- the concave configuration of the recesses 790 may in this case have, for example, a round or circular segment-shaped cross-section, wherein this may possibly change along the circumferential direction with respect to a radius or diameter.
- Such an embodiment may be useful, for example, if substantially rotationally symmetrical, so for example cylindrical or barrel-shaped spring elements 140 are to be used in the context of a torsional vibration damper 100.
- the receiving elements 190 receiving surfaces 800 which may be executed substantially flat and may be oriented perpendicular to the circumferential direction. If the spring elements 140 of the torsional vibration damper 100 are subjected to pressure and the recesses 790 are positioned radially further outside than the corresponding spring elements 140, this can result in a mechanical connection of the spring elements 140 and the receiving elements 190 in the context of a corresponding positive and / or frictional connection Connection may be possible without the use of additional connecting means.
- the spring elements 140 of the spring assembly 130 biased may make it possible, if necessary, to reduce negative effects due to a load-changing geometry of the spring elements 140 and their position in the dual mass flywheel 1 10 on the idling decoupling, possibly even completely avoided.
- FIG. 19 shows a perspective view of the guide device 230, the receptacle elements 190 connected thereto, and the spring set 130 and the further spring set 130 '. Due to the geometric configuration of the recesses, which is shown in order to simplify the illustration only in connection with the receiving element 190-2, a guide and a receptacle of the spring elements 140 can be made possible.
- FIG. 20 shows a perspective sectional view of the guide device 230, the receiving elements 190 connected to it and the spring elements 140 of FIG Spring arrangement 130.
- the cutting plane runs perpendicular to the circumferential direction through the receiving element 190-2 at the level of the rivet connection 620.
- the application of the holding structures 610 to the corresponding receiving elements 190 (sliding shoe ) take place for example by means of a distance rivet 810.
- Fig. 21 shows a non-perspective view of the sectional view of Fig. 20, in which just in the area of the rivet joint 620 a greater depth of detail can be seen.
- the rivet connection or the rivet 620 in the region of the receiving element 190-2 has a rivet sleeve 820 which extends substantially completely through a corresponding bore or opening in the receiving element 190.
- the rivet sleeve 820 may for example be designed so that it is in contact with the support structures 610-2, 610-5. This may possibly lead to a local deformation of the holding structures 610 in the region of the rivet sleeve 820. However, it may also be made somewhat shorter, so that the holding structures 610-2, 610-5 are directly in contact with the contact surfaces 630 of the receiving element 190.
- FIG. 22 shows a schematically simplified representation of a receiving element 190, which is in contact with spring elements 140 - 1, 140 - 2 on both sides.
- the receiving element 190 is in this case connected via a holding structure 610, which is formed as part of the guide device 230.
- FIG. 22 illustrates the forces applied to the receiving element 190.
- centrifugal forces 830-1 and 830-2 of the two spring elements 140-1 and 140-2 which are in contact with the receiving element 190, act on it.
- the centrifugal forces 830 can also act only proportionally on the receiving element 190 if, for example, the relevant spring elements 140 are likewise guided correspondingly on a side facing away from the receiving element 190.
- centrifugal forces 830 are in this case also directed radially outward, as a centrifugal force 840, which is a consequence of the mass of the receiving element 190.
- a centrifugal force 840 which is a consequence of the mass of the receiving element 190.
- the centrifugal forces 830 acting on the spring elements 140 are a consequence of their mass.
- a radial spring force component 850 which, like the aforementioned centrifugal forces 830, is directed radially outward.
- This resulting radial force F RES is compensated by a counterforce 860 of size F G , which is directed radially inward and is applied by the support structures 610 and the guide device 230, respectively, so that in an equilibrium of forces the resulting radial force is radially outward F RES Counterforce F G corresponds
- FIGS. 23, 24 and 25 thus show a sequence with regard to the mode of operation of the guide device 230 with increasing rotational speed.
- a detail of the torsional vibration damper 100 and the dual mass flywheel 1 10 is shown in each of FIGS. 23 to 25, in which the spring elements 140-2 to 140-4 and the receiving elements 190-3, 190-4 arranged therebetween are shown via corresponding support structures 610 of the guide device 230 are guided radially through this.
- the sliding surface 240 is again formed on an inner side of the primary flywheel 120, ie on the drive side 150.
- FIG. 23 shows a state in which the holding structures 610 are at a standstill of the torsional vibration damper 100 or at low rotational speeds in an initial form.
- the state shown in Fig. 23 is thus that of a no-load state in which no friction occurs, so that a gap between the receiving elements 190 and the sliding surface 240 its takes maximum value d. It is therefore believed that the support structures in the initial form, as shown in Fig. 23, have maximum air.
- Fig. 24 the situation is shown in the interior of the torsional vibration damper 100, in which the support structures 610 are radially deformed to the maximum au externally, so that the receiving elements 190 (sliding blocks) abut the sliding surface 240.
- This can occur, for example, when a speed or a load has exceeded a corresponding predetermined value, for example a second threshold speed.
- the mating sliding surfaces 250 of the receiving elements 190 begin to rub against the sliding surface 240.
- FIG. 25 shows the situation in which the torsional vibration damper 100 is loaded with a maximum load, so that the receiving elements 190 with their counter-sliding surfaces 250 abut in turn against the sliding surface 240 of the primary flywheel 120.
- the holding structures 610 are in turn deformed radially outward to a maximum extent Shen, wherein the receiving elements abut the sliding surface 240.
- the receiving elements 190 thus have no air with respect to the sliding surface 240.
- there is maximum friction so that an additional radial force has an effect only on the sliding surface 240, but not on the support structures 610. These are thus protected against overstretching in the sense of overload protection.
- the amount of friction of the paired receptacles 190 may be defined by defining a radial load dependent deformation of the support structures 610 by adjusting the geometry, the materials used, and the stiffness. This can be achieved, for example, by letting the holding structures 610 "fly" the receiving elements 190 at a specific distance (distance d in the starting position) over the sliding surface 240. These can thus be dependent on the radial force which arises, ie the sum of the centrifugal forces 830 , 840 and the radial spring force component 850 by a certain, namely the maximum distance d, outwardly deform until the receiving elements 190 abut the sliding surface 240.
- the trapped pairs of receiving elements 190 may be present at different radial loads. This makes it possible to control the friction load and / or speed dependent. For this purpose, it is sufficient to design the holding structures 610, that is, for example, the holding plates only differently rigid. A concern of the receiving elements 190 on the sliding surface 240 is hereby not necessary and can of course also be prevented or prevented by a correspondingly stable design of the support structures 610.
- FIGS. 26 and 27 thus contrast friction torque curves 870-1 and 870-2, which act as a function of a friction torque M R as a function of an acting radial force F res .
- the radial force is a function of the radial load and is, as explained in connection with FIG. 22, composed of the centrifugal forces 820, 830 and the radial force component of the spring force 850, so that the radial force F res as a function of the introduced torque M and a speed n can be represented.
- the speed n in this case influences the centrifugal forces, whereas the introduced torque M can influence the radial force component of the spring force by a corresponding deformation of the spring elements 140.
- FIG. 26 shows the friction torque curve 870-1 of a dual-mass flywheel 110 whose receiving elements 190 are not guided radially by a guide device 230. This increases from an initial value MO, which is due to the bias of the spring elements 140 and the resulting radial force component of the spring force, strictly monotonically increasing with increasing radial force F res .
- FIG. 27 shows the corresponding friction torque curve M R as a function of the radial force F res (friction torque curve 870-2), in which the receiving elements 190 are kept away from the sliding surface 240 on the primary flywheel 120 by the guide device 230 up to a second threshold speed.
- the value M ' 0 is in this case ideally identical, but may assume a higher value due to unwanted effects, but is typically smaller than the value M 0 of the dual-mass flywheel 110 without a guide device 230.
- Fig. 28 shows a perspective view of a hub disc 200 and a guide device 230, which a centering device 880 for the support structures 61 0 of the guide device 230.
- the centering device 880 is so in the present case with the output side 1 60, namely the hub disc 200 rotatably coupled, can however, in other embodiments also be coupled to the drive side 150.
- the centering device 880 is, as the following description will show, designed to center the guide device 230 with respect to the drive side 50 and / or the output side.
- the centering device 880 thus comprises a mounting bracket 890 and a fastening pin 900, which is connected to the hub disk 200 or is embodied as part thereof and is also referred to as a centering nose or a nose on the hub disk 200.
- the retaining clip 890 is shown here in FIG. 28 and the enlarged representation shown there in the installed state, in FIG. 29 in the non-installed state.
- the mounting bracket 890 has a portion 91 0 extending along the radial direction from the mounting post 900, not shown in FIG. 29, so that over at least one, in the present case four grooves 920, the support structures 610 can be received and guided along the radial direction.
- the grooves 920 are so radially in the installed state directed outward Shen, so that they can engage around the support structures 610 of radially inward. As a result, they are centered on the hub disc 200.
- grooves 920 are shown in the retainer 890 shown in Figs. 28 and 29, a number of grooves may be varied in other embodiments of such retainer.
- the brackets 890 in the embodiment shown in Figs. 28 and 29 are also guide members 930 which are adapted to guide the support structures 610 along the axial direction as well.
- the mounting bracket 890 has two opposing latching brackets 940 which adjoin a recess 950, so that the recess 950 and the latching brackets 940 are able to form a positive connection after latching the latching bracket 940 with the mounting pin 900.
- the recess 950 and the two Verrastungsbügel 940 have such a shape, so that on the one hand allow locking with the mounting pin 900 and on the other hand can form a positive connection with this after locking.
- FIG. 30 shows how the retaining bracket 890 or the guide component 930 approaches the fastening pin 900.
- FIG. 31 shows a representation similar to FIG. 29 of a further retaining clip 890, which does not differ from the retaining clip 890 shown in FIG. 30 with respect to the recess 950, the latching clip 940.
- the retaining bracket 890 has only one centering recess 960, which is wider than the groove 920 along the axial direction, instead of the grooves 920.
- FIGs 32, 33 and 34 illustrate a clip-on operation of the retaining clip 890, also referred to as a spacer.
- Fig. 32 shows schematically an approximation of the retaining clip 890 to the mounting pin 900. If the retaining clip 890 reaches the fastening pin 900 so that the latching clips 940 contact the fastening pin, they are bent outwards and the fastening pin 900 can slide into the recess 950 , If, as shown in Fig. 34, the mounting pin 900 is fully engaged in the recess 950, the Verrastungsbügel 940 move back to their original position and thus create together with the recess 950 due to their geometric configuration with respect to the mounting pin 900 a positive connection with this.
- a retaining clip 890 can be created on the hub disc 200, the primary flywheel 120, the cover plate 270, the secondary flywheel 220 or another drive-side or drive-side component of the torsional vibration damper 100 or the dual mass flywheel 110, using technically simple means and with little effort. over which the centering of the support structures 610 and optionally an axial guide of the same is possible.
- FIGS. 32 to 34 thus illustrate a centering of the retaining clip 890 on the nose 900.
- 35 shows a plan view of a torsional vibration damper 100 or a dual mass flywheel 110 according to an exemplary embodiment, which differs from that shown in FIG. 7 essentially by the arrangement of the spring elements and the arrangement and configuration of the receiving elements 190. 35 is a partial sectional illustration, since FIG. 35 also shows at least one section of the secondary flywheel 220, that is, the output side 1 60.
- the dual-mass flywheel shown in FIG. 35 also has five spring elements 140-1, 140-5 in each of the two spring arrangements 130, 130 '. however, of which the first spring element 140-1, the fourth spring element 140-4 and the fifth spring element 140-5 are configured as hard spring elements.
- the spring elements 140-2 and 140-3, so the second and the third spring element, are configured accordingly as a soft spring elements.
- the spring arrangement therefore corresponds to the arrangement HWWHH, where H stands for a hard spring element and W for a soft spring element.
- the receiving elements 190-1 and 190-6 which are substantially inelastically coupled to the drive side 150 and the output side 160, respectively, are configured as non-captured receiving elements 190, as in the previously described exemplary embodiments.
- the receiving elements 190-2 and 190-3 which are arranged between the first and second spring element 140-1, 140-2 and the second and the third spring element 140-2, 140-3, as well as not trapped or free receiving elements 190 configured.
- Only the receiving elements 190-4 and 190-5 are mechanically connected to the guide device 230, more precisely corresponding holding structures 610, as have already been described above, and thus form captured receiving elements 190.
- the dual-mass flywheel 110 as shown in FIG is, therefore, has only two captive receiving elements 190- 4, 190-5 per spring arrangement 130.
- the further spring arrangement 130 can be configured correspondingly symmetrical.
- FIG. 36 shows a comparison of the dual-mass flywheel 110 shown in FIG. 35 and the corresponding torsional vibration damper 100 and a variant in which a spring element 140 in the form of a bow spring 970 is used instead of at least two spring elements 140.
- a spring element 140 in the form of a bow spring 970 is used instead of at least two spring elements 140.
- a hard bow spring 970 can be used as a common spring element 140.
- a soft bow spring 970 can be used instead of the two soft spring elements 140-2, 140-3 for the starting stage.
- a shorter concentric with the soft bow spring inside hard spring or bow spring used so may optionally also be substituted for acting as a stop step first spring element 140-1 in the case of a corresponding embodiment of the bow spring 970.
- FIGS. 35 and 36 thus illustrate that within the scope of exemplary embodiments of a torsional vibration damper 100 completely different spring arrangements and arrangements of trapped or free receiving elements 190 can be implemented.
- a similarly acting or equivalent spring arrangement based on at least one bow spring 970 can be implemented, which optionally saves two or more spring elements 140 of the aforementioned variants.
- FIG. 37 shows a perspective illustration of a further guide device with a corresponding number of receiving elements 190, which, however, unlike those described above, are no longer designed symmetrically.
- the receiving elements 190-3, 190-4 and 190-5 are caught only on one side, so that the holding structures 610 no longer comprise diametrically opposite connecting sections for receiving the receiving elements 190.
- a centering device 880 As already described above, it may be advisable to radially guide a corresponding guide device 230 by means of a centering device 880, as already described above, in order to enable a corresponding radial force absorption via the latter.
- Such centering can be done inside, but also outside.
- it can optionally take place via the further openings 700 or other corresponding holes.
- the ring shape shown in FIG. 37 does not necessarily have to be implemented with the annular section 640 of the holding structures 610, since, for example, in the case of dual-mass flywheels 110, a swing angle is relatively high compared to a 360 ° full circle is small.
- a corresponding oscillation angle may be restricted to less than 90 °, in other embodiments to less than 70 °, for example to 60 ° and below.
- the support structures 610 of the guide device 230 need not be designed symmetrically. Nor do they have to catch two mutually opposite receiving elements 190 (sliding shoes). Thus, a one-sided power absorption of the radial forces is possible, and it may be advisable in this case, the radial forces occurring z. B. via the centering device 880 record. This, however, friction can be re-introduced into the system.
- FIG. 38 shows a further embodiment of a guide device 230 which has been used, for example, in the power split system 400 as shown in FIG. 4.
- FIG. 38 shows corresponding receiving elements 190, which are connected or coupled in the manner already described, that is to say for example via the rivet connections 620, to the holding structures 610 of the guide device 230.
- the support structure 610-1 and the support structure 610-4 for radially guiding the receiving element 190-3 differ from the other support structures 610 for the other two receiving elements 190-4, 190-5.
- the support structure 610-2 includes an annular portion 640 and corresponding connecting portions 650 for mechanical attachment to the receptacles 190
- the support structures 610-1, 610-4 include a blocking portion 980 instead of the disc-shaped annular portions 640, respectively which extends in the axial direction and not in the radial direction, such as the annular portions 640.
- the blocking sections 980 are designed such that above the predetermined blocking speed of the torsional vibration damper 100 the blocking section comes into contact with at least one further holding structure 610, for example the holding structure 610-2, of the plurality of holding structures this forms a frictional or non-positive contact.
- the spring elements 140 of the spring arrangement 130 in FIG. 4 are, as explained above, supported and guided by the receiving elements 190 (sliding shoes).
- One or more of these receiving elements 190 are attached to the guide means 230 in the form of the support structures 610, which may result in a reduction in friction for these, since they can be stored friction or friction to the primary flywheel.
- pairwise opposite receiving elements 190 are guided jointly by the guide device 230.
- the holding structures 610-1 and 610-4 arranged radially inwardly which have the previously mentioned blocking sections 980, can, due to their design, ie their geometrical relationships, select the material and / or a material thickness with a lower rigidity than the holding structures arranged further outwards 610 have. As a result, it may be possible that due to the radial centrifugal forces acting on these holding structures 610, the respective holding structures 610 are deformed or deformed such that the blocking sections 980 come into contact with at least one corresponding holding structure 610, for example a corresponding annular section 640, and so on Cause friction between the components concerned.
- the radial arrangement of the support structures 610 which are also referred to as fliers, is shown here only as an example and can of course be varied in other embodiments of a torsional vibration damper 100. However, it is advisable to arrange a support structure 610 having a lower radial spring stiffness at least partially radially within a support structure 610 having a higher radial spring stiffness to ensure the previously described function of the lock.
- the holding structures 610 and the receiving elements 190 deform radially outward.
- the one or more inner support structures 610 having a lower rigidity along the radial direction than the one or more outer support structures 110 is more deformed under the influence of the centrifugal force. If this is deformed so far that its outer side, that is to say the blocking section 980, bears against the inside of the radially outer holding structure 610, friction occurs between the two holding structures 610.
- the two holding structures 610 can no longer be excited by the motor excitation to a relative movement to each other due to the resulting frictional forces and the resistances resulting from the resulting under centrifugal non-circular shape.
- the spring elements 140 which are connected between the two interconnected holding structures 610, can thus also perform no or at most a strongly damped relative movement to one another.
- the overall stiffness of the torsional vibration damper 100 or the dual mass flywheel 110 can increase accordingly.
- the interlocking portion 980 may also contact other components of the torsional vibration damper 100 and establish a frictional contact therewith. This may be, for example, a component connected or coupled to the drive or driven side 150, 1 60. As a result, it may also be possible to positively influence a characteristic of the torsional vibration damper 100 by generating a corresponding friction via the blocking section 980.
- FIG 39 shows a schematic representation of a receiving element 190, which is cast on or molded onto a holding structure 610 which comprises a bent sheet-metal section 990.
- the receiving element 190 may be made in such a case, for example, from a pourable or injection moldable plastic, wherein the support structure 610 may be made of a metallic material, such as a steel or a metallic alloy.
- FIG. 40 shows a perspective view of the holding structure 610 shown in FIG. 39, that is to say of the corresponding curved sheet metal section 990.
- FIG. 41 schematically shows in simplified form a receiving element 190 which, in contrast to the receiving element 190 shown in FIG. 39, does not comprise a holding structure 610, so that the receiving element 190 in FIG. 41 is an un caught or free receiving element 190.
- Fig. 41 shows a receiving element 190, in which, unlike the case shown in Fig. 39, the holding plate is not molded or molded into the shoe.
- other joining techniques such as laying, clamping, riveting, screwing, gluing, plugging, clipping, crimping, pouring, or other positive engagement, may be used between the support structure 610 and the receiving member 190 become.
- a multiplicity of different techniques can thus be used.
- a buckling of the holding structures 610 under load can be counteracted, for example, by a corresponding design with regard to thickness, geometry and construction.
- multi-part holding structures 610 for example in the form of multi-part holding plates, can be used by a corresponding arrangement and connection of their individual parts, which can also prevent dents due to their design.
- two identical support structures 610 and retaining plates can be used together, as shown for example in Fig. 42.
- FIG. 42 shows a perspective view of a double-layer holding plate as holding structure 610.
- a holding plate with a reinforcing ring can be used, as shown for example in FIG. Also, as shown for example in FIG.
- holding plates can be used as holding structures 610, in which holding plates with a corresponding stiffening are used in the region of the loaded structures, that is to say in particular in the region of the connecting sections 650.
- two or more half holding plates or ring elements can be connected to each other, as shown for example in Fig. 45.
- FIG. 45 shows a two-part holding plate, which is configured from two substantially identically designed halves, which are mechanically connected to one another.
- holding structures 610 can also be produced on the basis of multi-part holding plates. Even if a riveting of the corresponding components is always shown in the variants shown in FIGS. 42 to 45, in other embodiments, the relevant individual components also crimped, welded together, plugged or connected to each other in a form-fitting, non-positive and / or cohesive manner in another way.
- FIG. 46 shows a representation similar to FIG. 7 of a torsional vibration damper 100 or a dual-mass flywheel 1 10.
- the variant shown in FIG. 46 differs from the variant shown in FIG. 7 with regard to the design of the hub disc 200
- Hub disc 200 in Fig. 7 is formed such that the receiving elements 190-1 or 190-6 (or 190-6 of the spring assembly 130 ') can slide on the hub disc 200 radially outward, and so with the sliding surface 240 in contact can occur, the hub disc 200, as shown in Fig. 46, both the spring assembly 130, as well as the further spring assembly 130 'facing retaining portions 1000 on.
- the retaining portions 1000 engage in recesses 1010 of the receiving elements 190-1 and 190-6 or the receiving elements 190 -1 and 190'-6 of the fault arrangement 130 'in such a way that due to a positive connection between the hub disc 200 and the respective receiving elements 190th a movement of the same is limited radially outward. In this way, it may be possible to completely bond over a contact of the respective receiving elements 190 with the sliding surface 240 or at least to limit them with regard to the acting force.
- Fig. 47 shows a further embodiment in which the hub wheel 200 is also through corresponding retaining portions 1000 in the position and formed corresponding to a touching of the receiving elements 190-1 and 190 '-6, by which the hub disc 200 into direct contact can enter the retaining portions 1000 of the hub disc 200 here radially outboard with the respective receiving elements 190 in contact. This also makes it possible to completely or at least partially prevent a corresponding contact of the receiving elements 190 with the sliding surface 240.
- FIGS. 46 and 47 thus show corresponding torsional vibration dampers 100 in which the spring plates are trapped.
- the retaining sections 1000 can be attributed to the guide device 230 if necessary.
- Embodiments of a torsional vibration damper 100 can thus be used, for example, as dual-mass flywheels 110 with trapped receiving elements 190 for reducing friction.
- the receiving elements 190 and the guide device can be configured as separate components, so a multi-part structure of the relevant arrangement can be made.
- corresponding Radialkraftab racelemente in the form of the support structures 610 (sheet metal rings) and corresponding spring guide elements so the receiving elements 190 are implemented, for example in the form of Kunststoffgleit Mern.
- the receiving elements 190 may in this case, for example, from a certain speed, for example, the second threshold speed, with the sliding surface 240 in contact.
- the radial rigidity of the guide device 230 can be deliberately exploited in order to control the friction as a function of the rotational speed.
- the receiving elements 190 can be coupled to holding structures 610 of different radial stiffness, whereby the spring elements can be deactivated differently by applying the receiving elements 190 to the sliding surface 240.
- the axial offset of the holding structures 610 can be compensated by an equally large axial offset of the abutment surfaces 670 (attachment surfaces) on the receiving elements 190.
- a part of the receiving elements 190 sliding shoes and / or spring plate
- a spacing of the holding structures 610 which can be moved circumferentially relative to each other can be achieved when the friction elements are clipped in, that is to say the holding clamps 890.
- a positive and possibly additional frictional radial securing of the receiving elements in or on the support structures 610 can take place, which are also referred to as flyer plates.
- Embodiments of a torsional vibration damper 100 can be used in all types of drives for passenger cars and commercial vehicles, as well as for all internal combustion engines and machines that require or make desirable minimization and / or decoupling of rotational irregularities.
- Combinable embodiments are, for example, with dual-mass wheels of any kind, but also with torsion dampers, external dampers, internal dampers, torsionally damped and standard clutch discs and torque converters, electric machines, absorbers of any kind, power split systems, slip clutches and other components reducing rotational nonuniformity.
- all types of transmission can basically be connected downstream of an embodiment. These include, for example, dual clutch transmissions of any kind.
- all types of clutches and starting elements so for example, hydrodynamically cooled clutches, double clutches and multi-plate clutches can also be used in combination with an embodiment used.
- any spring elements and spring arrangements can be caught within the scope of embodiments in the described ways and manners.
- a connection can be made to the receiving elements 190 (shoes and spring plate) of any kind.
- appropriate catching may be possible in connection with similar components holding or guiding the springs.
- suitable metal flyers, metal sliding shoes and sheet springs as well as other components can be used.
- the springs themselves can be caught if necessary.
- any friction device such as load friction discs for large Friction at large vibration angles and small friction at low angles of oscillation, and viscous friction devices and other corresponding systems can be combined to provide a damping especially when passing To allow resonance speeds. If necessary, it may be advisable to design these friction devices in such a way that they do not work in the driving position.
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- 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 |
|---|---|---|---|
| DE102012214361.0A DE102012214361A1 (de) | 2012-08-13 | 2012-08-13 | Torsionsschwingungsdämpfer, Zweimassenschwungrad und leistungsverzweigendes Torsionsschwingungsdämpfersystem |
| PCT/EP2013/064755 WO2014026811A1 (de) | 2012-08-13 | 2013-07-12 | Torsionsschwingungsdämpfer, zweimassenschwungrad und leistungsverzweigendes torsionsschwingungsdämpfersystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2882978A1 true EP2882978A1 (de) | 2015-06-17 |
Family
ID=48808314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13739386.4A Withdrawn EP2882978A1 (de) | 2012-08-13 | 2013-07-12 | Torsionsschwingungsdämpfer, zweimassenschwungrad und leistungsverzweigendes torsionsschwingungsdämpfersystem |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2882978A1 (de) |
| DE (1) | DE102012214361A1 (de) |
| WO (1) | WO2014026811A1 (de) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101417453B1 (ko) | 2012-12-06 | 2014-07-08 | 현대자동차주식회사 | 플라이휠의 댐핑장치 |
| DE102014006691A1 (de) | 2014-05-09 | 2015-11-12 | Zf Friedrichshafen Ag | Drehungleichförmigkeitsreduzierung durch Leistungsverzweigung - Kennlinienauslegung |
| DE102014216807B4 (de) | 2014-08-25 | 2023-06-29 | Schaeffler Technologies AG & Co. KG | Fliehkraftpendel |
| DE102015216154A1 (de) | 2015-08-25 | 2017-03-16 | Volkswagen Aktiengesellschaft | Startverfahren für eine Verbrennungskraftmaschine und Kraftfahrzeug |
| DE102015221542A1 (de) * | 2015-11-03 | 2017-05-04 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Steuereinheit zur Vermeidung von Zugaussetzern im Antriebsstrang eines Fahrzeugs |
| DE102017204146A1 (de) | 2017-03-14 | 2018-09-20 | Bayerische Motoren Werke Aktiengesellschaft | Torsionsschwingungsdämpfer sowie Antriebsstrang für ein Fahrzeug |
| DE102017212997A1 (de) | 2017-07-27 | 2019-01-31 | Volkswagen Aktiengesellschaft | Start-Stopp-Verfahren für einen Verbrennungsmotor, Verbrennungsmotor und Kraftfahrzeug |
| DE102017213003A1 (de) | 2017-07-27 | 2019-01-31 | Volkswagen Aktiengesellschaft | Start-Stopp-Verfahren für einen Verbrennungsmotor, Verbrennungsmotor und Kraftfahrzeug |
| DE102018106211A1 (de) | 2018-03-16 | 2019-09-19 | Volkswagen Aktiengesellschaft | Startverfahren für einen Verbrennungsmotor, Verbrennungsmotor und Kraftfahrzeug |
| JP7227804B2 (ja) * | 2019-03-15 | 2023-02-22 | 株式会社エクセディ | ダンパ装置 |
| DE102019127280A1 (de) * | 2019-09-02 | 2021-03-04 | Schaeffler Technologies AG & Co. KG | Torsionsschwingungsdämpfer |
| DE102021200819A1 (de) * | 2021-01-29 | 2022-08-04 | Zf Friedrichshafen Ag | Torsionsschwingungsdämpfer für einen Fahrzeugantriebsstrang |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4360352A (en) | 1981-03-27 | 1982-11-23 | Borg-Warner Corporation | Extended travel vibration damper assembly |
| DE19729999B4 (de) * | 1997-07-12 | 2006-12-14 | Zf Sachs Ag | Torsionsschwingungsdämpfer mit einer Dämpfungseinrichtung |
| EP1584838B1 (de) | 2004-04-07 | 2007-05-30 | BorgWarner Inc. | Torsionsschwingungsdämpfer |
| DE102006059054B4 (de) * | 2006-12-14 | 2016-09-22 | Borg Warner Inc. | Torsionsschwingungsdämpfer mit Endschuhen |
| DE102007016744A1 (de) | 2007-04-07 | 2008-10-09 | Zf Friedrichshafen Ag | Torsionsschwingungsdämpfer |
| WO2009015625A1 (de) * | 2007-08-02 | 2009-02-05 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Vorrichtung zur dämpfung von drehschwingungen |
-
2012
- 2012-08-13 DE DE102012214361.0A patent/DE102012214361A1/de not_active Withdrawn
-
2013
- 2013-07-12 WO PCT/EP2013/064755 patent/WO2014026811A1/de not_active Ceased
- 2013-07-12 EP EP13739386.4A patent/EP2882978A1/de not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014026811A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014026811A1 (de) | 2014-02-20 |
| DE102012214361A1 (de) | 2014-02-13 |
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