Pendulum rocker damper with one pivot axis

Abstract

Pendulum rocker damper (1) with a pivot axis (D) for a drive train of a motor vehicle, comprising a rocker unit (4) for modulating a torque, comprising: - a primary flange (5) which can be connected to a first external connection (7) in a torque-transmitting manner; - at least one rocker element (9) prestressed by an energy storage element (10); - at least a first and a second role (11, 12); and - a secondary flange (6) which can be connected to a second external connection (8) in a torque-transmitting manner, wherein the first roller (11) is mounted to roll on a first rocker-side roller track (13) and a primary flange-side roller track (15) complementary to the first rocker-side roller track (13), wherein the second roller (12) is mounted to roll on a second rocker-side roller track (14) and a secondary flange-side roller track (16) complementary to the second rocker-side roller track (14), wherein a friction device (3) is arranged between the primary flange (5) and the secondary flange (6), wherein a first component (17) of the friction device (3) is rotationally fixed to the primary flange (5) and a second component (18) of the friction device (3) is rotationally fixed to the secondary flange (6), wherein the first component (17) is configured as a spring device (21) pre-tensioned in the axial direction (A) of the pendulum rocker damper (1) opposite the secondary flange (6) and / or wherein the second component (18) is configured as a spring device (21) pre-tensioned in the axial direction (A) of the pendulum rocker damper (1) opposite the primary flange (5), wherein the spring device (21) has two spring plates (22) attached to the secondary flange (6), wherein one of the spring plates (22) is arranged on one side of the secondary flange (6) and the other of the spring plates (22) in axial direction (A) is arranged on the other side of the secondary flange (6),and wherein both spring plates (22) clamp the primary flange (5) between them in a frictional engagement.

Description

[0001] The present invention relates to a pendulum rocker damper with a rotational axis for a drive train, comprising a rocker unit for modulating a torque.

[0002] So-called rocker dampers are known from the prior art. For example, DE 10 2019 121 204 A1 and DE 10 2019 121 205 A1 disclose rocker dampers for modulating the stiffness of a rotating shaft or a rotating shaft system in a drive train. These rocker dampers comprise a primary flange and a secondary flange, which are connected to one another in a torque-transmitting manner (in both directions). Interposed between them are a plurality of rocker elements (also referred to as rockers) and a plurality of spring elements. The rocker elements are supported in a relatively displaceable manner by means of at least one rolling element on the primary flange and / or the secondary flange. The rolling elements are clamped in a rolling manner between the respective transmission track and the complementary counter track by means of the spring elements.By means of this pendulum rocker damper, the relative angle of rotation between the primary flange and the secondary flange is converted into a spring travel of the spring elements.

[0003] Using the transmission tracks and the complementary mating tracks, which form a ramp mechanism, a transmission ratio can be adjusted, thus adjusting the stiffness of the pendulum rocker damper. Another advantage here is that the transmission ratio does not have to be constant; rather, the pitch of the ramp mechanism can be variably adjusted via the angle of rotation of the primary flange relative to the secondary flange.

[0004] Conventional rocker dampers require a large amount of space and are designed to reduce the stiffness of the rotating shaft. If so-called overtorques occur during operation—that is, torques that exceed the operating limit of one of the spring elements—the state of the art only provides space-consuming protection for the rocker damper against such peak loads.

[0005] The present invention is based on the object of at least partially overcoming the disadvantages known from the prior art and, in particular, of accommodating a friction device in the pendulum rocker damper in a way that is as space-neutral as possible.

[0006] This object is achieved according to the invention by a pendulum rocker damper according to claim 1 and a pendulum rocker damper according to claim 3 with a rotational axis for a drive train of a motor vehicle, having a rocker unit for modulating a torque, comprising: - a primary flange which can be connected to a first external connection in a torque-transmitting manner; - at least one rocker element prestressed by an energy storage element; - at least a first and a second role; and - a secondary flange that can be connected to a second external connection to transmit torque, wherein the first roller is mounted so as to be able to roll on a first roller conveyor on the rocker side and a primary flange-side roller conveyor complementary to the first roller conveyor on the rocker side, wherein the second roller is mounted so as to roll on a second roller conveyor on the rocker side and a secondary flange-side roller conveyor complementary to the second roller conveyor on the rocker side, and wherein a friction device is arranged between the primary flange and the secondary flange.

[0007] Since a first component of the friction device is non-rotatably connected to the primary flange and a second component of the friction device is non-rotatably connected to the secondary flange, the friction device can be accommodated in the rocker damper with as little space as possible. The friction device or the two components of the friction device create a frictional torque that counteracts an incoming torque and thus acts as a damper. The energy required to rotate the secondary flange relative to the primary flange is therefore partially dissipated in the friction device in the form of heat energy, resulting in a hysteresis dependent on the angle of rotation. In particular, the rocker damper proposed here can be used to modulate a torque in a small installation space and simultaneously implement protection against excessive torque.

[0008] Preferred embodiments are set out in the dependent claims.

[0009] In the following, reference is made to the specified axis of rotation whenever, without explicit indication to the contrary, the center, axial direction, radial direction, or direction of rotation and corresponding terms are used. Ordinal numbers used in the preceding and following descriptions serve only to clearly distinguish them and do not reflect the order or ranking of the designated components. An ordinal number greater than one does not necessarily imply that another such component must be present.

[0010] Preferably, the friction device is variable, ie the friction torque depends on the relative rotation of the secondary flange to the primary flange.

[0011] The rocker unit for modulating a torque comprises at least one rocker element. The rocker element is pivotably mounted, i.e., rockable, relative to the direction of rotation (or superimposed on the rotational movement) by means of at least one or more (preferably two or three) rollers on the primary flange and / or the secondary flange. Preferably, two energy storage elements and two rocker elements are provided.

[0012] If two or more rocker elements are provided, the at least one energy storage element is preferably provided between two rocker elements, wherein a rocking movement of the two rocker elements results in a relative movement of the two rocker elements to one another. The relative movement, in turn, results in a change in the energy potential of the at least one energy storage element. If two rocker elements are provided, one or two energy storage elements are preferably provided, which are preferably arranged at opposite ends of the rocker elements, and if there are three rocker elements, three energy storage elements are preferably provided. If only one rocker element is provided, the energy storage element is preferably arranged between the rocker element and either the secondary flange or the primary flange, so that a relative movement resulting from the rocking movement between the rocker element and the secondary flange orthe primary flange changes the energy potential of the energy storage element.

[0013] The primary flange of the rocker unit is connected or connectable to the first external connection in a torque-transmitting manner, and the secondary flange of the rocker unit is connected or connectable to the second external connection in a torque-transmitting manner. The primary flange, the secondary flange, and / or the at least one rocker element is / are preferably formed in a disk-like or disk-segment-like manner, particularly preferably by means of stamping and / or sheet metal forming.

[0014] The at least one roller is arranged on the rocker-side roller conveyor and the complementary primary flange-side roller conveyor in such a way that it is in a rest position within the roller conveyors when no torque is applied, or even when a low torque is applied. When a (larger) torque is applied, the at least one roller rolls on the corresponding roller conveyors (at least almost) without slippage. Preferably, the at least one roller is preloaded against the roller conveyors by means of the at least one energy storage element. The at least one roller and the corresponding roller conveyor thus form a ramp drive. The roller conveyors have a gradient selected such that additional (kinetic) energy or work is required to overcome the gradients. The required (kinetic) energy can be achieved by reducing torsional vibration or the torque to be modulated.For example, a stiffness or damping value can be represented or adjusted by means of the pitch of the roller conveyors and / or the stiffness of the energy storage element. This allows for modulated torque transmission from the primary flange to the secondary flange or vice versa. The at least one energy storage element is, for example, a helical compression spring, for example with a straight spring axis, a bow spring, or a gas pressure accumulator. The energy storage element can be expanded or compressed by a relative movement of the primary flange and the secondary flange.

[0015] In a preferred embodiment, two energy storage elements are arranged transversely to the axis of rotation in such a way that when a torque is introduced, both energy storage elements are compressed, so that the rigidity of the energy storage elements in interaction with the ramp gradient of the track pair(s) enables the torque to be modulated.

[0016] If, for example, a rotational movement is initiated from an external connection, such as the primary flange, the roller on the rocker-side roller conveyor and the complementary outer roller conveyor rolls (up) from its rest position in the corresponding direction on the ramp-like roller conveyor as a result of the relative movement between the primary flange and the secondary flange. Rolling up here merely illustrates the fact that work is being done. More precisely, due to the geometric relationship, an opposing force of the at least one energy storage element is overcome. Rolling down therefore means a release of stored (kinetic) energy from the at least one energy storage element. Up and down do not necessarily correspond to a spatial direction.

[0017] It should be noted that a rotational movement initiated via the secondary flange and the corresponding second external connection can also be torque-modulated in the manner described above. The rocker unit proposed here is extremely compact because the arrangement of the roller conveyors on each rocker element allows for a very compact design.

[0018] In a preferred embodiment, two sets of rollers are arranged between the primary flange and the secondary flange on two corresponding roller conveyor pairs, each with two roller conveyors. A first roller conveyor pair is arranged with a first rocker-side roller conveyor on the at least one rocker element and a primary flange-side roller conveyor on the primary flange in order to rollably accommodate at least one primary-side roller or a set of primary-side rollers. A second roller conveyor pair in this embodiment comprises a second rocker-side roller conveyor on the rocker element and a secondary flange-side roller conveyor on the secondary flange and is designed to rollably accommodate at least one secondary-side roller or a set of secondary-side rollers. The first roller conveyor pair is particularly preferably arranged radially outside the second roller conveyor pair.

[0019] It is advantageous if the first component is formed as one piece with the primary flange and / or if the second component is formed as one piece with the secondary flange. This allows for a particularly compact design of the pendulum rocker damper.

[0020] Furthermore, it is advantageous if the first component is designed as a section on the primary flange that projects inward in the radial direction of the rocker damper or is connected to the primary flange. This allows for a particularly compact design of the rocker damper.

[0021] Furthermore, it is advantageous if the second component is designed as a section on the secondary flange that projects outward in the radial direction of the rocker damper or is connected to the secondary flange. This allows for a particularly compact design of the rocker damper.

[0022] Preferably, the primary flange and the secondary flange overlap in the axial direction of the rocker damper. They are particularly preferably arranged in the same axial plane. This allows for a particularly compact design of the rocker damper.

[0023] It is advantageous if the first component is designed as a spring device prestressed in the axial direction of the pendulum rocker damper against the secondary flange and / or if the second component is designed as a spring device prestressed in the axial direction of the pendulum rocker damper against the primary flange.

[0024] Preferably, the spring device comprises two spring plates fastened to the secondary flange, wherein one of the spring plates is arranged on one side of the secondary flange and the other of the spring plates is arranged in the axial direction on the other side of the secondary flange, and wherein both spring plates clamp the primary flange between them in a frictional engagement.

[0025] It is advantageous if the spring plates are attached to the radially outwardly projecting portion of the secondary flange and are in frictional contact with a circular arc section of the primary flange, which is limited in the circumferential direction of the rocker damper by two radially inwardly projecting stops. The secondary flange-side section can engage one of the stops to limit the rotation of the rocker damper. This allows for a particularly compact design of the rocker damper.

[0026] Preferably, the spring device comprises two spring plates fastened to the primary flange, wherein one of the spring plates is arranged on one side of the primary flange and the other of the spring plates is arranged in the axial direction on the other side of the primary flange, and wherein both spring plates clamp the secondary flange between them in a frictional engagement.

[0027] It is advantageous if the spring plates are designed in the shape of a circular arc segment and are in frictional engagement with the outwardly projecting portion of the secondary flange. The primary flange has two stops that project radially inward and are spaced apart from each other in the circumferential direction of the rocker damper. The secondary flange-side section can engage one of the stops to limit the rotation of the rocker damper. This enables a particularly compact design of the rocker damper.

[0028] The invention described above is explained in detail below against the relevant technical background with reference to the accompanying drawings, which show preferred embodiments. The invention is in no way limited by the purely schematic drawings; it should be noted that the drawings are not to scale and are not suitable for defining proportions. Features that are not identified as essential to the invention in the following description of the drawings are to be understood as optional. In the drawings: Fig. 1: a first embodiment of a pendulum rocker damper with a friction device in a plan view; Fig. 2: the pendulum rocker damper Fig. 1 in a sectional view; Fig. 3: the pendulum rocker damper Fig. 1 in a plan view, wherein the upper, ie with respect to Fig. 2 the right rocker elements have been removed, in overrun mode ( Fig. 3a), in the neutral state ( Fig. 3b) and in train operation ( Fig. 3c); Fig. 4: the friction device of the pendulum rocker damper attached to a secondary flange from Fig. 1 without primary flange in a perspective view; Fig. 5: the friction device of the pendulum rocker damper attached to the secondary flange Fig. 1 with primary flange in a perspective view; Fig. 6: Details of the primary and secondary flange of the rocker damper from Fig. 1 in a plan view; Fig. 7: a second embodiment of a pendulum rocker damper with a friction device in a plan view ( Fig. 7a), whereby the provisions relating to Fig. 7a the upper rocker elements have been removed ( Fig. 7b), and where the information relating to Fig. 7a the upper rocker elements and parts of the friction device have been removed; Fig. 8: the friction device of the pendulum rocker damper attached to a primary flange from Fig. 7a without secondary flange in a perspective view; Fig. 9: the friction device of the pendulum rocker damper attached to the primary flange Fig. 7a with secondary flange in a perspective view; and Fig. 10: the friction device of the pendulum rocker damper attached to the primary flange Fig. 7a with secondary flange in a perspective view with a different cutting plane.

[0029] The Fig. 1 to 6 relate to a first embodiment of a pendulum rocker damper 1. With reference to Fig. 1, the basic structure and basic operation of the pendulum rocker damper 1 are described below, which are equally relevant for the second embodiment.

[0030] The pendulum rocker damper 1 has a rocker unit 4 for modulating a torque, which is arranged rotatably about a rotational axis D of the pendulum rocker damper 1. The rocker unit 4 has a primary flange 5, which can be connected to a first external connection 7 in a torque-transmitting manner, and a secondary flange 6, which can be connected to a second external connection 8 in a torque-transmitting manner. The secondary flange 6 is arranged within the primary flange 5 in the radial direction R of the pendulum rocker damper 1.

[0031] The rocker damper 1 is preferably provided in a drive train of a motor vehicle. For example, the primary flange 5 of the rocker unit 4 can be connected to friction linings of a clutch disc, the output side of a slip clutch, or the output side of a flywheel. For example, the secondary flange 6 of the rocker unit 4 can be connected to a hub 2 or encompass the hub 2, by means of which the rocker damper 1 can be mounted and connected, for example, to an intermediate shaft or an input shaft of a transmission.

[0032] The rocker unit 4 further comprises at least one rocker element 9 prestressed by an energy storage element 10. A plurality of rocker elements 9 (here two pairs, each spaced apart from one another in the axial direction A of the pendulum rocker damper 1 and connected to one another in a rotationally fixed manner by means of spacer bolts) are provided in the torque flow direction between the preferably annular primary flange 5 and the secondary flange 6. In the illustrated embodiment, the primary flange 5 and the secondary flange 6 are arranged in the axial direction A between two rocker elements 9 spaced apart from one another in the axial direction A.

[0033] The primary flange 5 and the secondary flange 6 overlap in the axial direction A of the pendulum rocker damper 1. In particular, the primary flange 5 and the secondary flange 6 are arranged in the same axial plane, at least in the region of the rocker elements 9. This means that at least one of the flanges 5, 6 is arranged completely within the axial extension of the other flange 6, 5.

[0034] Between the upper rocker element 9 shown in the illustration and the lower rocker element 9 shown in the illustration, two energy storage elements 10 are arranged, corresponding to the number of rocker elements 9. These energy storage elements are preferably designed as helical compression springs with a straight spring axis. The energy storage elements 10 hold the two rocker elements 9 in a rest position in the position shown. The energy storage elements 10 shown here are (optionally) identical.

[0035] The two rocker elements 9 are each connected to the primary flange 5 in a torque-transmitting manner solely by means of primary-side rollers 11 (here purely optionally four) via a first rocker-side roller conveyor 13 and a primary flange-side roller conveyor 15. The primary flange 5 forms the primary flange-side roller conveyor 15 and is thereby coupled to the rocker elements 9 via a cam mechanism thus formed by means of the first rocker-side roller conveyor 13. The primary-side rollers 11 are here (optionally) preloaded by means of the energy storage elements 10 against the respective corresponding primary flange-side roller conveyor 15 of the primary flange 5 and the first rocker-side roller conveyor 13 of the rocker elements 9 and can therefore only be moved in a rolling motion.

[0036] The rocker elements 9 are in turn coupled (forming a second rocker-side roller track 14) via a further cam mechanism formed there with a (here purely optionally single) secondary-side roller 12 via a secondary-flange-side roller track 16 to the secondary flange 6 and, via the latter, to the hub 2 in a torque-transmitting manner. The secondary flange 6 is connected to the hub 2 in a torque-transmitting manner purely optionally by means of a pre-damper (not shown).

[0037] Thus, the rocker unit 4 has at least a first and a second roller 11, 12. The first roller 11 is mounted so that it can roll on the first rocker-side roller conveyor 13 and the primary flange-side roller conveyor 15, which complements the first rocker-side roller conveyor 13. The second roller 12 is mounted so that it can roll on the second rocker-side roller conveyor 14 and the secondary flange-side roller conveyor 16, which complements the second rocker-side roller conveyor 14.

[0038] When a torque gradient is applied (from the primary flange 5 to the secondary flange 6), the primary flange 5 is rotated in the circumferential direction U of the pendulum rocker damper 1 relative to the secondary flange 6, and as a result, the rocker elements 9 in this embodiment are moved towards one another by the rollers 11, 12 rolling on the corresponding (ramp-like) roller tracks 13, 15, 14, 16 on the primary flange 5 and the rocker elements 9 or on the secondary flange 6 and the rocker elements 9. In this case, the energy storage elements 10 are compressed because a relative angle of rotation between the primary flange 5 and the secondary flange 6 is translated into a corresponding spring travel of the energy storage elements 10.

[0039] In this context, with regard to the first embodiment, reference is also made to the Fig. 3 a to 3c, in which the rocker elements 9 located at the top of the drawing plane have been removed, whereby the Fig. 3a the pendulum rocker damper 1 in overrun mode, the Fig. 3b the pendulum rocker damper 1 in the neutral state, and the Fig. 3c shows the pendulum rocker damper 1 in train operation.

[0040] The ratio between the angle of rotation and the spring travel can be adjusted via the geometry of the roller conveyors 13, 15, 14, and 16 (cam gears). The torque can be modulated via the stiffness (or, better, softness) of the energy storage elements 10, thus defining a torque gradient depending on the input torque.

[0041] In Fig. 2 is the pendulum rocker damper 1 from Fig. 1 in a sectional view, in which a friction device 3, which is arranged between the primary flange 5 and the secondary flange 6, and which in Fig. 1 is obscured by the rocker elements 9 located at the top of the drawing plane.

[0042] As can be seen in particular from the Fig. 2, Fig. 4 and Fig. 5, a spring device 21 is formed on the secondary flange 6, which is prestressed in the axial direction A against the primary flange 5. More precisely, the spring device 21 comprises two spring plates 22 fastened to the secondary flange 6. One of the spring plates 22 is arranged on one side of the secondary flange 6. The other of the spring plates 22 is arranged in the axial direction A on the other side of the secondary flange 6. Both spring plates 22 are prestressed against each other in the axial direction A in a tweezer-like manner, as can be seen in particular from Fig. 4, whereby both spring plates 22 clamp the primary flange 5 between them in a frictional manner, as can be seen in particular from Fig. 5. The spring device 21 or the two spring plates 22 are rotationally fixed with respect to the secondary flange 6.

[0043] The two spring plates 22 are attached to a section 20 on the secondary flange 6 that projects outwards in the radial direction R and are in frictional contact with a circular arc section 25 of the primary flange 5, which is limited in the circumferential direction U by two stops 24 of the primary flange 5 that project inwards in the radial direction R. Depending on whether the pendulum rocker damper 1 is in tension operation ( Fig. 3c and Fig. 6) or in overrun mode ( Fig. 3a), the section 20 on the secondary flange side, which projects outwards in the radial direction R, can come into contact with one of the stops 24 in order to limit the rotation of the pendulum rocker damper 1.

[0044] A first component 17 of the friction device 3, in the present embodiment the circular arc section 25 of the primary flange 5, is formed in a rotationally fixed manner with the primary flange 5. More precisely, the first component 17 is formed in one piece with the primary flange 5. A second component 18 of the friction device 3, in the present embodiment the section 20 projecting outward in the radial direction R, to which the spring device 21 or the two spring plates 22 is / are fastened, is formed in one piece with the secondary flange 6. Alternatively or additionally, the second component 18 can be formed as a spring device 21 preloaded in the axial direction A of the pendulum rocker damper 1 against the primary flange 5.

[0045] Preferably, the spring device 21 is provided near the secondary flange-side roller conveyor 16 on the secondary flange 6. In particular, the number of spring devices 21 corresponds to the number of secondary flange-side roller conveyors 16, two in the illustrated embodiment, i.e., two pairs of spring plates 22.

[0046] The Fig. 7a to 10 relate to a second embodiment of the pendulum rocker damper 1 with the friction device 3. Fig. 7a shows the pendulum rocker damper 1 in a top view. In Fig. 7b are those relating to Fig. 7a upper rocker elements 9 have been removed. In Fig. 7c are those relating to Fig. 7a upper rocker elements 9 and parts of the friction device 3 have been removed.

[0047] The spring device 21 has two spring plates 23 fastened to the primary flange 5. One of the spring plates 23 is arranged on one side of the primary flange 5. The other of the spring plates 23 is arranged in the axial direction A on the other side of the primary flange 5. Both spring plates 23 are prestressed against each other in the axial direction A in a tweezer-like manner, as can be seen in particular from Fig. 8, whereby both spring plates 23 clamp the secondary flange 6 between them in a frictional manner, as can be seen in particular from the Fig. 9 and Fig. 10. The spring device 21 or the two spring plates 23 are rotationally fixed with respect to the primary flange 5.

[0048] The two spring plates 23 are shaped like circular arc segments and are in frictional contact with the outwardly projecting section 20 of the secondary flange 6. The primary flange 5 has two stops 24 that project inward in the radial direction R and are spaced apart from one another in the circumferential direction U of the rocker damper 1. Depending on whether the rocker damper 1 is in tensile or overrunning operation, the section 20 on the secondary flange side, which projects outward in the radial direction R, can come into contact with one of the stops 24 to limit the rotation of the rocker damper 1.

[0049] The second component 18 of the friction device 3, in the present embodiment the section 20 of the secondary flange 6 projecting outward in the radial direction R, is formed in a rotationally fixed manner with the secondary flange 6. More precisely, the second component 18 is formed integrally with the secondary flange 6.

[0050] The first component 17 is connected to the primary flange 5 in a rotationally fixed manner in the form of a section 19 projecting inward in the radial direction R of the pendulum rocker damper 1, in the present embodiment as a spring device 21 preloaded in the axial direction A against the secondary flange 6 or as two spring plates 23. Alternatively, the first component can be formed on the primary flange 5 or be integral with the primary flange.

[0051] The preceding embodiments relate to a pendulum rocker damper 1 with a rotational axis D for a drive train of a motor vehicle, comprising a rocker unit 4 for modulating a torque, comprising: a primary flange 5, which can be connected to a first external connection 7 in a torque-transmitting manner; at least one rocker element 9 prestressed by a first energy storage element 10; at least one first and one second roller 11, 12;and a secondary flange 6, which can be connected to a second external connection 8 in a torque-transmitting manner, wherein the first roller 11 is mounted so as to roll on a first rocker-side roller track 13 and a primary flange-side roller track 15 complementary to the first rocker-side roller track 13, wherein the second roller 12 is mounted so as to roll on a second rocker-side roller track 14 and a secondary flange-side roller track 16 complementary to the second rocker-side roller track 14, wherein a friction device 3 is arranged between the primary flange 5 and the secondary flange 6, wherein a first component 17 of the friction device 3 is formed so as to be non-rotatable with the primary flange 5 and a second component 18 of the friction device 3 is formed so as to be non-rotatable with the secondary flange 6.;

[0052] The friction device 3 or the two components 17, 18 of the friction device 3 generate a frictional torque that counteracts an incoming torque and thus acts as a damper. The energy required for the relative rotation of the secondary flange 6 to the primary flange 5 is therefore partially dissipated in the friction device 3 in the form of heat energy, resulting in a hysteresis dependent on the angle of rotation. The friction device is preferably variable, i.e., the frictional torque depends on the relative rotation of the secondary flange 6 to the primary flange 5. In particular, the pendulum rocker damper 1 proposed here can be used to modulate a torque in a small installation space and, at the same time, to provide protection against excessive torque. List of reference symbols 1 pendulum rocker damper 2 Hub 3 Friction device 4 rocker unit 5 Primary flange 6 Secondary flange 7 primary-side external connection 8 secondary external connection 9 Rocker element 10 Energy storage element 11 primary role 12 secondary role 13 first rocker-side roller conveyor 14 second rocker-side roller conveyor 15 primary flange roller conveyor 16 secondary flange roller conveyor 17 first component 18 second component 19 inwardly projecting section 20 outwardly projecting section 21 Spring device 22 spring plate 23 spring plate 24 stops 25 circular arc section A axial direction D axis of rotation R radial direction U circumferential direction

Claims

[1] Pendulum rocker damper (1) with a rotational axis (D) for a drive train of a motor vehicle, comprising a rocker unit (4) for modulating a torque, comprising: - a primary flange (5) which can be connected to a first external connection (7) in a torque-transmitting manner; - at least one rocker element (9) prestressed by an energy storage element (10); - at least a first and a second roller (11, 12); and - a secondary flange (6) which can be connected to a second external connection (8) in a torque-transmitting manner, wherein the first roller (11) is mounted so as to be able to roll on a first roller conveyor (13) on the rocker side and a roller conveyor (15) on the primary flange side that is complementary to the first roller conveyor (13) on the rocker side, wherein the second roller (12) is mounted so as to roll on a second rocker-side roller conveyor (14) and a secondary flange-side roller conveyor (16) complementary to the second rocker-side roller conveyor (14), wherein a friction device (3) is arranged between the primary flange (5) and the secondary flange (6), wherein a first component (17) of the friction device (3) is formed in a rotationally fixed manner with the primary flange (5) and a second component (18) of the friction device (3) is formed in a rotationally fixed manner with the secondary flange (6), wherein the first component (17) is formed as a spring device (21) prestressed in the axial direction (A) of the pendulum rocker damper (1) against the secondary flange (6) and / or wherein the second component (18) is formed as a spring device (21) prestressed in the axial direction (A) of the pendulum rocker damper (1) against the primary flange (5), wherein the spring device (21) has two spring plates (22) fastened to the secondary flange (6), wherein one of the spring plates (22) is arranged on one side of the secondary flange (6) and the other of the spring plates (22) is arranged in the axial direction (A) on the other side of the secondary flange (6),and wherein both spring plates (22) clamp the primary flange (5) between them with frictional engagement., [2] Pendulum rocker damper (1) with a rotational axis (D) for a drive train of a motor vehicle, comprising a rocker unit (4) for modulating a torque, comprising: - a primary flange (5) which can be connected to a first external connection (7) in a torque-transmitting manner; - at least one rocker element (9) prestressed by an energy storage element (10); - at least a first and a second roller (11, 12); and - a secondary flange (6) which can be connected to a second external connection (8) in a torque-transmitting manner, wherein the first roller (11) is mounted so as to be able to roll on a first roller conveyor (13) on the rocker side and a roller conveyor (15) on the primary flange side that is complementary to the first roller conveyor (13) on the rocker side, wherein the second roller (12) is mounted so as to roll on a second rocker-side roller conveyor (14) and a secondary flange-side roller conveyor (16) complementary to the second rocker-side roller conveyor (14), wherein a friction device (3) is arranged between the primary flange (5) and the secondary flange (6), wherein a first component (17) of the friction device (3) is formed in a rotationally fixed manner with the primary flange (5) and a second component (18) of the friction device (3) is formed in a rotationally fixed manner with the secondary flange (6), wherein the first component (17) is formed as a spring device (21) prestressed in the axial direction (A) of the pendulum rocker damper (1) against the secondary flange (6) and / or wherein the second component (18) is formed as a spring device (21) prestressed in the axial direction (A) of the pendulum rocker damper (1) against the primary flange (5), wherein the spring device (21) has two spring plates (23) fastened to the primary flange (5), wherein one of the spring plates (23) is arranged on one side of the primary flange (5) and the other of the spring plates (23) is arranged in the axial direction (A) on the other side of the primary flange (5),and wherein both spring plates (23) clamp the secondary flange (6) between them with frictional engagement., [3] Pendulum rocker damper (1) according to claim 1 or 2, wherein the first component (17) is formed integrally with the primary flange (5) and / or wherein the second component (18) is formed integrally with the secondary flange (6). [4] Pendulum rocker damper (1) according to one of the preceding claims, wherein the first component (17) is formed in the form of a section (19) projecting inwards in the radial direction (R) of the pendulum rocker damper (1) on the primary flange (5) or is connected to the primary flange (5). [5] Pendulum rocker damper (1) according to one of the preceding claims, wherein the second component (18) is formed in the form of a section (20) projecting outwards in the radial direction (R) of the pendulum rocker damper (1) on the secondary flange (6) or is connected to the secondary flange (6). [6] Pendulum rocker damper (1) according to claim 1 in conjunction with claim 5, wherein the spring plates (22) are fastened to the section (20) projecting outwards in the radial direction (R) on the secondary flange (6) and are in frictional contact with a circular arc section (25) of the primary flange (5), which is delimited in the circumferential direction (U) of the pendulum rocker damper (1) by two stops (24) projecting inwards in the radial direction (R), wherein the section (20) on the secondary flange side can come into contact with one of the stops (24) in order to limit the rotation of the pendulum rocker damper (1). [7] Pendulum rocker damper (1) according to claim 2 in conjunction with claim 5, wherein the spring plates (23) are designed in the shape of a circular arc segment and are in frictional engagement with the outwardly projecting section (20) of the secondary flange (6), wherein the primary flange (5) has two stops (24) projecting inwards in the radial direction (R) and spaced apart from one another in the circumferential direction (U) of the pendulum rocker damper (1), and wherein the secondary flange-side section (20) can come into engagement with one of the stops (24) in order to limit the rotation of the pendulum rocker damper (1). [8] Pendulum rocker damper (1) according to one of the preceding claims, wherein the primary flange (5) and the secondary flange (6) overlap in the axial direction (A) of the pendulum rocker damper (1). [9] Pendulum rocker damper (1) according to claim 8, wherein the primary flange (5) and the secondary flange (6) are arranged in the same axial plane.

Images