Pendulum rocker damper with a rotating shaft

Abstract

The present invention relates to a pendulum rocker damper (1) for a drive train of a motor vehicle, having an axis of rotation (D) and a rocker unit (4) for adjusting torque. The pendulum rocker damper (1) comprises 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) preloaded by an energy storage element (10), at least one first roller and at least 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. The first roller (11) is rollably mounted 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), the second roller (12) is rollably mounted 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), and a friction device (3) is disposed between the primary flange (5) and the secondary flange (6), a first component (17) of the friction device (3) is configured to rotate with the primary flange (5), and a second component (18) of the friction device (3) is configured to rotate with the secondary flange (6).

Description

[Technical Field]

[0001] The present invention relates to a pendulum rocker damper for a drivetrain having an axis of rotation and a rocker unit for modulating torque. [Background technology]

[0002] So-called pendulum rocker dampers are already known in the prior art. For example, pendulum rocker dampers for adjusting the stiffness of a rotating shaft or a rotating shaft system in a drive train are known from US Pat. No. 5,623,999 and US Pat. No. 5,623,999. These pendulum rocker dampers comprise a primary flange and a secondary flange, which are connected to each other (in both directions) so as to transmit torque. A plurality of rocker elements (also called rockers) and a plurality of spring elements are interposed. The rocker elements are supported by at least one rolling element on the primary flange and / or the secondary flange so as to be displaceable relative to each other. The rolling elements are clamped by a spring element so as to be rollable between a respective transmission track and a complementary counter track. The pendulum rocker damper converts the relative rotation angle between the primary flange and the secondary flange into a spring deflection of the spring element.

[0003] The transmission track and complementary counter track forming the ramp gear allow the transmission ratio to be adjusted, and thus the stiffness of the pendulum rocker damper. It is also advantageous that the transmission ratio does not have to be constant, but that the slope of the ramp gear can be variably adjusted via the rotation angle from the primary flange to the secondary flange.

[0004] Known pendulum rocker dampers require a large amount of installation space and are designed to reduce the stiffness of the rotating shaft. The only protection measures for pendulum rocker dampers against peak loads, such as excessive torques occurring during operation, i.e. torques exceeding the operating limit of one of the spring elements, are known from the prior art and require a large installation space. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] German Patent Application Publication No. 102019121204 [Patent Document 2] German Patent Application Publication No. 102019121205 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention is based on the object of at least partially overcoming the drawbacks known from the prior art, in particular of accommodating a friction device in a pendulum rocker damper with as little impact as possible on the installation space. [Means for solving the problem]

[0007] This object is achieved according to the invention by a pendulum rocker damper for a drive train of a motor vehicle, which has a rotation axis and a rocker unit for adjusting torque, as claimed in claim 1, wherein the pendulum rocker damper comprises: a primary flange that can be torque-transmittingly connected to the first external connection; at least one rocker element preloaded by an energy storage element; at least one first roller and at least one second roller; a secondary flange that can be connected to a second external connection portion for torque transmission; the first roller is rollably mounted on a first rocker-side roller track and a primary flange-side roller track complementary to the first rocker-side roller track; the second roller is rollably mounted on a second rocker-side roller track and a secondary flange-side roller track complementary to the second rocker-side roller track; A friction device is disposed between the primary flange and the secondary flange.

[0008] Because the first component of the friction device is configured to be non-rotatable relative to the primary flange and the second component of the friction device is configured to be non-rotatable relative to the secondary flange, the friction device can be housed in a pendulum rocker damper with minimal impact on installation space. The friction device or two components of the friction device generate a friction torque that counteracts the input torque, thus acting as a damper. Therefore, the energy required for relative rotation of the secondary flange relative to the primary flange is dissipated to some extent in the form of thermal energy within the friction device, resulting in hysteresis that depends on the rotation angle. In particular, the pendulum rocker damper proposed herein can be used to regulate torque in a small installation space while simultaneously providing protection against excessive torque.

[0009] Preferred exemplary embodiments are set forth in the dependent claims.

[0010] Unless otherwise specified, when the terms "central," "axial," "radial," or "rotational," and corresponding terms are used hereinafter, they refer to the described axis of rotation. Unless otherwise specified, ordinal numbers used in the preceding and following descriptions are for distinguishing purposes only and do not indicate the order or ranking of the named components. An ordinal number greater than one does not necessarily imply that additional such components must be present.

[0011] Preferably, the friction device is variable, ie the friction torque is dependent on the relative rotation of the secondary flange with respect to the primary flange.

[0012] The rocker unit for adjusting torque includes at least one rocker element. The rocker element is attached to the primary flange and / or the secondary flange by at least one or more (preferably two or three) rollers, so that it can pivot, i.e., oscillate, relative to the direction of rotation (or can be superimposed on the rotational movement). Preferably, two energy storage elements and two rocker elements are provided.

[0013] If two or more rocker elements are provided, at least one energy storage element is preferably provided between the two rocker elements, and the rocking movement of the two rocker elements results in relative movement of the two rocker elements relative to each other. This relative movement results in a change in the energy potential of the at least one energy storage element. If two rocker elements are provided, preferably one or two energy storage elements are provided, and these energy storage elements are preferably arranged at both ends of the rocker element in each case. If three rocker elements are provided, preferably three energy storage elements are 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 the energy potential of the energy storage element changes during the relative movement between the rocker element and the secondary flange or the primary flange resulting from the rocking movement.

[0014] The primary flange of the rocker unit is or can be torque-transmittingly connected to a first external connection, and the secondary flange of the rocker unit is or can be torque-transmittingly connected to a second external connection. The primary flange, the secondary flange, and / or the at least one rocker element are preferably formed, such as disks or disk segments, particularly preferably by stamping and / or sheet metal forming.

[0015] At least one roller is arranged on the rocker-side roller track and its complementary primary flange-side roller track so that it is in a stationary position within the roller track when no torque or a small torque is applied. When a (larger) torque is applied, the at least one roller rolls on the corresponding roller track with (at least almost) no slippage. Preferably, the at least one roller is preloaded against the roller track by at least one energy storage element. Thus, a ramp gear is formed by the at least one roller and the corresponding roller track. The roller track has a gradient selected so that additional (kinetic) energy or work is required to overcome the gradient. The required (kinetic) energy can be achieved by reducing torsional vibration or adjusting the torque. For example, stiffness or damping values ​​can be expressed or adjusted by the gradient of the roller track and / or the stiffness of the energy storage element. This allows for adjustment of torque transmission from the primary flange to the secondary flange or vice versa. The at least one energy storage element may be, for example, a helical compression spring, a bow spring, or a gas accumulator having a linear spring axis. The energy storage element may be extended or contracted by movement of the primary and secondary flanges relative to one another.

[0016] In a preferred embodiment, the two energy storage elements are positioned transversely to the axis of rotation such that when torque is applied, both energy storage elements are compressed, so that the torque can be regulated by the stiffness of the energy storage elements along with the ramp gradient of the path pair(s).

[0017] For example, when rotational motion is initiated by an external connection such as a primary flange, relative motion between the primary and secondary flanges causes rollers on the rocker-side roller track and the complementary outer roller track to roll (up) from their rest positions in corresponding directions on the ramped roller track. The term "rolling up" is used herein simply to describe that work is being performed. More precisely, due to a geometric relationship, the opposing force of at least one energy storage element is overcome. Thus, the term "rolling down" refers to the release of stored (kinetic) energy from at least one energy storage element. Thus, the terms "up" and "down" do not necessarily correspond to spatial directions.

[0018] It should be noted that the rotational movement initiated via the secondary flange and the corresponding second external connection can also regulate torque as described above.The rocker unit proposed herein is very compact as the arrangement of roller tracks on each rocker element allows for a very compact configuration.

[0019] In a preferred embodiment, two sets of rollers are provided between the primary flange and the secondary flange on two corresponding pairs of roller tracks, each having two roller tracks in each case. In this case, the first pair of roller tracks is arranged with a first rocker-side roller track of at least one rocker element and a primary flange-side roller track of the primary flange so as to rollably receive at least one primary roller or a set of primary rollers. In this embodiment, the second pair of roller tracks includes a second rocker-side roller track of the rocker element and a secondary flange-side roller track of the secondary flange, and is configured to rollably receive at least one secondary roller or a set of secondary rollers. Particularly preferably, the first pair of roller tracks is arranged radially outward of the second pair of roller tracks.

[0020] It is advantageous if the first component is formed integrally with the primary flange and / or if the second component is formed integrally with the secondary flange, which allows the pendulum rocker damper to be constructed particularly compactly.

[0021] It is further advantageous if the first component is formed as a part of the primary flange that projects radially inward of the pendulum rocker damper or is connected to the primary flange, which allows for a particularly compact design of the pendulum rocker damper.

[0022] It is further advantageous if the second component is formed as a part of the secondary flange that projects radially outward of the pendulum rocker damper or is connected to the secondary flange, which allows the pendulum rocker damper to be constructed particularly compactly.

[0023] Preferably, the primary and secondary flanges overlap in the axial direction of the pendulum rocker damper, and more preferably, they are arranged in the same axial plane, which allows for a particularly compact design of the pendulum rocker damper.

[0024] It is advantageous if the first component is configured as a spring device that preloads the pendulum rocker damper axially relative to the secondary flange and / or if the second component is configured as a spring device that preloads the pendulum rocker damper axially relative to the primary flange.

[0025] Preferably, the spring device has two spring leaves fixed to the secondary flange, one of the spring leaves being arranged on one side of the secondary flange and the other of the spring leaves being arranged on the other side of the secondary flange in the axial direction, and both spring leaves frictionally clamping the primary flange between them.

[0026] It is advantageous if the spring leaf is fixed to a radially outwardly projecting part of the secondary flange and is in friction-locking contact with a circular arc part of the primary flange, the circular arc part being limited in the circumferential direction of the pendulum rocker damper by two radially inwardly projecting stops, the part on the secondary flange being able to come into contact with one of the stops in each case to limit the rotation of the pendulum rocker damper, which allows the pendulum rocker damper to be constructed particularly compactly.

[0027] Preferably, the spring device has two spring leaves fixed to the primary flange, one of the spring leaves being arranged on one side of the primary flange and the other of the spring leaves being arranged on the other side of the primary flange in the axial direction, and both spring leaves frictionally clamping the secondary flange between them.

[0028] It is advantageous if the spring leaf is configured in the form of a circular arc segment and is in friction-locking contact with the outwardly projecting part of the secondary flange, the primary flange having two radially inwardly projecting stops spaced apart from one another in the circumferential direction of the pendulum rocker damper, the part facing the secondary flange being able to come into contact with one of the stops in each case to limit the rotation of the pendulum rocker damper, which allows the pendulum rocker damper to be configured particularly compact.

[0029] The above-mentioned invention will be described in detail below against the relevant technical background with reference to the accompanying drawings showing preferred exemplary embodiments. It should be noted that the present invention is in no way limited by the use of purely schematic drawings, which are not dimensionally accurate and are not suitable for defining proportions. In the following description of the drawings, features not specified as essential to the present invention are understood to be optional. [Brief explanation of the drawings]

[0030] [Figure 1] FIG. 1 is a top view of a first exemplary embodiment of a pendulum rocker damper with a friction device. [Figure 2] FIG. 2 is a cross-sectional view of the pendulum rocker damper of FIG. 1. [Figure 3] 3a, 3b, and 3c are top views of the pendulum rocker damper of FIG. 1 with the upper rocker element removed, i.e., the right-hand rocker element with reference to FIG. 2, showing the overrun mode (FIG. 3a), the neutral state (FIG. 3b), and the traction mode (FIG. 3c). [Figure 4] FIG. 2 is a perspective view of the friction device of the pendulum rocker damper of FIG. 1 secured to the secondary flange, but excluding the primary flange. [Figure 5] FIG. 2 is a perspective view of the friction device of the pendulum rocker damper of FIG. 1 secured to a secondary flange, including a primary flange. [Figure 6] FIG. 2 is a top view of the details of the primary and secondary flanges of the pendulum rocker damper of FIG. 1. [Figure 7] 7a is a top view of a second exemplary embodiment of a pendulum rocker damper with a friction device (FIG. 7b), with the upper rocker element removed with reference to FIG. 7a, and with the upper rocker element and part of the friction device removed with reference to FIG. 7a. [Figure 8] 7b is a perspective view of the pendulum rocker damper friction device of FIG. 7a secured to the primary flange, but not including the secondary flange. [Figure 9] 7b is a perspective view of the friction device of the pendulum rocker damper of FIG. 7a secured to the primary flange and including a secondary flange. [Figure 10] 7b is a perspective view of a friction device of the pendulum rocker damper of FIG. 7a fixed to the primary flange, including the secondary flange, in a different cross-sectional plane. DETAILED DESCRIPTION OF THE INVENTION

[0031] 1-6 relate to a first exemplary embodiment of a pendulum rocker damper 1. With reference to FIG. 1, the basic structure and basic mode of operation of the pendulum rocker damper 1 will be described below, which are equally relevant to the second exemplary embodiment.

[0032] Pendulum rocker damper 1 has rocker unit 4 for adjusting torque, and rocker unit 4 is arranged to rotate about rotation axis D of pendulum rocker damper 1. Rocker unit 4 has primary flange 5 which can be connected to first external connection part 7 so as to transmit torque, and secondary flange 6 which can be connected to second external connection part 8 so as to transmit torque. Secondary flange 6 is arranged inside primary flange 5 in radial direction R of pendulum rocker damper 1.

[0033] Pendulum rocker damper 1 is preferably installed in the drivetrain of an automobile. For example, primary flange 5 of rocker unit 4 may be connected to the friction lining of a clutch disc, the output side of a slip clutch, or the output side of a flywheel. For example, secondary flange 6 of rocker unit 4 may be connected to or include hub 2, which may allow pendulum rocker damper 1 to be attached to or connected to, for example, an intermediate shaft or the input shaft of a transmission.

[0034] Rocker unit 4 also has at least one rocker element 9 that is preloaded by energy storage element 10. A plurality of rocker elements 9 (in this case, two rocker elements each spaced apart in axial direction A of pendulum rocker damper 1 and non-rotatably connected to each other by a spacer bolt) are provided in the torque flow direction between preferably annular primary flange 5 and secondary flange 6. In the exemplary embodiment shown, primary flange 5 and secondary flange 6 are disposed in axial direction A between two rocker elements 9 that are spaced apart in axial direction A.

[0035] The primary flange 5 and the secondary flange 6 overlap in the axial direction A of the pendulum rocker damper 1. Specifically, the primary flange 5 and the secondary flange 6 are arranged in the same axial plane, at least in the area of ​​the rocker element 9. This means that at least one of the flanges 5, 6 is located completely within the axial extension of the other flange 6, 5.

[0036] Between the upper rocker element 9 as shown and the lower rocker element 9 as shown, two energy storage elements 10 are arranged here corresponding to the number of rocker elements 9, and these energy storage elements 10 are preferably configured as helical compression springs with straight spring axes. 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.

[0037] Each of the two rocker elements 9 is solely connected to the primary flange 5 in a torque-transmitting manner by (here only optionally four) primary rollers 11 via a first rocker-side roller track 13 and a primary flange-side roller track 15. The primary flange 5 forms the primary flange-side roller track 15 and is therefore coupled to the rocker element 9 via the cam gear thus formed by the first rocker-side roller track 13. The primary rollers 11 are here (optionally) preloaded by the energy storage element 10 against the respective primary flange-side roller track 15 of the primary flange 5 and first rocker-side roller track 13 of the rocker element 9 and can therefore only be moved in a rolling manner.

[0038] The rocker element 9 (forming a second rocker-side roller track 14) is torque-transmittingly connected to the secondary flange 6 and via this to the hub 2 via a further cam gear formed therein, by means of a (here purely optionally single) secondary roller 12, via a secondary flange-side roller track 16. The secondary flange 6 is torque-transmittingly connected to the hub 2, purely optionally by means of a pre-damper (not shown).

[0039] Thus, rocker unit 4 has at least a first roller 11 and a second roller 12. First roller 11 is rollably mounted on a first rocker-side roller track 13 and a primary flange-side roller track 15 that is complementary to first rocker-side roller track 13. Second roller 12 is rollably mounted on a second rocker-side roller track 14 and a secondary flange-side roller track 16 that is complementary to second rocker-side roller track 14.

[0040] When a torque gradient is applied (from the primary flange 5 to the secondary flange 6), the primary flange 5 rotates relative to the secondary flange 6 in the circumferential direction U of the pendulum rocker damper 1, causing the rocker elements 9 to move towards each other, in this embodiment, by the rollers 11, 12 rolling on corresponding (ramped) roller tracks 13, 15, 14, 16 of the primary flange 5 and the rocker element 9, or the secondary flange 6 and the rocker element 9. In this process, the energy storage element 10 is compressed, as the relative rotation angle between the primary flange 5 and the secondary flange 6 is translated into a corresponding spring deflection of the energy storage element 10.

[0041] In this context, reference is also made to Figures 3a to 3c for a first exemplary embodiment, in which the rocker element 9 located above the drawing plane has been removed, Figure 3a showing the pendulum rocker damper 1 in overrun mode, Figure 3b showing the pendulum rocker damper 1 in neutral state and Figure 3c showing the pendulum rocker damper 1 in traction mode.

[0042] The geometry of the roller tracks 13, 15, 14, 16 (cam gears) can be used to adjust the ratio between the rotation angle and the spring deflection. The torque can be regulated via the stiffness (or rather flexibility) of the energy storage element 10, i.e., a torque gradient can be defined as a function of the input torque.

[0043] FIG. 2 is a cross-sectional view of the pendulum rocker damper 1 of FIG. 1, showing the friction device 3 located between the primary flange 5 and the secondary flange 6, which in FIG. 1 is hidden by the rocker element 9 located above the drawing plane.

[0044] As can be seen in particular from Figures 2, 4 and 5, a spring device 21 is formed on the secondary flange 6, which is preloaded in the axial direction A relative to the primary flange 5. More precisely, the spring device 21 consists of two spring leaves 22 fixed to the secondary flange 6. One of the spring leaves 22 is arranged on one side of the secondary flange 6. The other spring leaf 22 is arranged on the other side of the secondary flange 6 in the axial direction A. As can be seen in particular from Figure 4, the two spring leaves 22 are preloaded against each other like tweezers in the axial direction A, and the two spring leaves 22 frictionally clamp the primary flange 5 between them, as can be seen in particular from Figure 5. The spring device 21 or the two spring leaves 22 cannot rotate relative to the secondary flange 6.

[0045] Two spring plates 22 are fixed to a radially outwardly projecting portion 20 of the secondary flange 6 and are in friction-locking contact with a circular arc portion 25 of the primary flange 5, which is limited in the circumferential direction U by two stops 24 of the primary flange 5 projecting inwardly in the radial direction R. Depending on whether the pendulum rocker damper 1 is in traction mode (Figures 3c and 6) or in overrun mode (Figure 3a), the secondary flange portion 20 projecting outwardly in the radial direction R can in each case come into contact with one of the stops 24 so as to limit the rotation of the pendulum rocker damper 1.

[0046] A first component 17 of the friction device 3, in this exemplary embodiment a circular arc portion 25 of the primary flange 5, is configured to be non-rotatable relative to the primary flange 5. More precisely, the first component 17 is formed integrally with the primary flange 5. A second component 18 of the friction device 3, in this exemplary embodiment a spring device 21 or a portion 20 projecting outward in the radial direction R, to which two spring plates 22 are fixed, is formed integrally with the secondary flange 6. Alternatively or additionally, the second component 18 may be configured as a spring device 21 preloaded in the axial direction A of the pendulum rocker damper 1 relative to the primary flange 5.

[0047] Preferably, the spring devices 21 are provided in the vicinity of the secondary flange side roller tracks 16 of the secondary flange 6. In particular, the number of spring devices 21 corresponds to the number of secondary flange side roller tracks 16, which in the illustrated exemplary embodiment are two, i.e., two pairs of spring plates 22.

[0048] Figures 7a to 10 relate to a second exemplary embodiment of a pendulum rocker damper 1 with a friction device 3. Figure 7a is a top view of the pendulum rocker damper 1. In Figure 7b, the upper rocker element 9 has been removed with reference to Figure 7a. In Figure 7c, the upper rocker element 9 and part of the friction device 3 have been removed with reference to Figure 7a.

[0049] The spring device 21 has two spring leaves 23 fixed to the primary flange 5. One of the spring leaves 23 is arranged on one side of the primary flange 5. The other of the spring leaves 23 is arranged on the other side of the primary flange 5 in the axial direction A. As can be seen in particular in Figure 8, the two spring leaves 23 are preloaded against each other in the axial direction A like tweezers, and the two spring leaves 23 frictionally clamp the secondary flange 6 between them, as can be seen in particular in Figures 9 and 10. The spring device 21 or the two spring leaves 23 cannot rotate relative to the primary flange 5.

[0050] The two spring plates 23 are configured in the form of arc segments and are in friction-locking contact with the outwardly projecting portions 20 of the secondary flange 6. The primary flange 5 has two stops 24 which project inward in the radial direction R and are spaced apart from each other in the circumferential direction U of the pendulum rocker damper 1. Depending on whether the pendulum rocker damper 1 is in traction mode or in overrun mode, the secondary flange portion 20 which projects outward in the radial direction R can in each case come into contact with one of the stops 24 so as to limit the rotation of the pendulum rocker damper 1.

[0051] The second component 18 of the friction device 3, which in the present exemplary embodiment is a portion 20 of the secondary flange 6 that projects outward in the radial direction R, is configured non-rotatable relative to the secondary flange 6. More precisely, the second component 18 is formed integrally with the secondary flange 6.

[0052] The first component 17 is in the form of an inwardly projecting portion 19 in the radial direction R of the pendulum rocker damper 1 and in this exemplary embodiment is non-rotatably connected to the primary flange 5 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 may be formed in or integral with the primary flange 5.

[0053] The aforementioned exemplary embodiment relates to a pendulum rocker damper 1 for a motor vehicle drivetrain, having an axis of rotation D and a rocker unit 4 for adjusting torque. The pendulum rocker damper 1 comprises 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 preloaded by an energy storage element 10, at least one first roller 11 and at least one second roller 12, and a secondary flange 6 which can be connected to a second external connection 8 in a torque-transmitting manner. The first roller 11 is mounted to be able 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, the second roller 12 is mounted to be able 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, and a friction device 3 is arranged between the primary flange 5 and the secondary flange 6, a first component 17 of the friction device 3 is configured to be non-rotatable relative to the primary flange 5, and a second component 18 of the friction device 3 is configured to be non-rotatable relative to the secondary flange 6.

[0054] The friction device 3 or its two components 17, 18 generate a friction torque that counteracts the input torque and thus acts as a damper. Therefore, the energy required for the relative rotation of the secondary flange 6 with respect to the primary flange 5 is dissipated to some extent in the form of thermal energy within the friction device 3, resulting in a rotation-angle-dependent hysteresis. Preferably, the friction device is variable, i.e., the friction torque depends on the relative rotation of the secondary flange 6 with respect to the primary flange 5. In particular, the pendulum rocker damper 1 proposed herein can be used to regulate torque in a small installation space while simultaneously providing protection against excessive torque. [Explanation of symbols]

[0055] 1 Pendulum Rocker Damper 2 Hub 3 Friction Devices 4 locker units 5 Primary flange 6 Secondary flange 7 Primary side external connection 8 Secondary side external connection 9 Rocker Elements 10 Energy Storage Elements 11 Primary roller 12 Secondary roller 13 First rocker side roller track 14 Second rocker side roller track 15 Primary flange side roller track 16 Secondary flange side roller track 17 First Component 18 Second Component 19 Inward protruding part 20 Outward protruding part 21 Spring Device 22 Spring Plate 23 Spring Plate 24 Stop part 25 Arc section A axis direction D rotation axis R Radial direction U Circumferential direction

Claims

1. A pendulum rocker damper (1) for a drive train of a motor vehicle, having a rotation axis (D) and a rocker unit (4) for adjusting torque, a primary flange (5) that can be connected to a first external connection (7) so as to transmit torque; at least one rocker element (9) preloaded by an energy storage element (10); At least one first roller and at least one second roller (11, 12); a secondary flange (6) that can be connected to a second external connection (8) so as to transmit torque; the first roller (11) is rollably mounted 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); the second roller (12) is rollably mounted 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); A pendulum rocker damper (1), wherein a friction device (3) is disposed between the primary flange (5) and the secondary flange (6), a first component (17) of the friction device (3) being configured to be non-rotatable relative to the primary flange (5), and a second component (18) of the friction device (3) being configured to be non-rotatable relative to the secondary flange (6).

2. 2. The pendulum rocker damper (1) of claim 1, wherein the first component (17) is integrally formed with the primary flange (5) and / or the second component (18) is integrally formed with the secondary flange (6).

3. 3. The pendulum rocker damper (1) of claim 1 or 2, wherein the first component (17) is formed on the primary flange (5) as a part (19) that protrudes inward in the radial direction (R) of the pendulum rocker damper (1) or is connected to the primary flange (5).

4. 2. The pendulum rocker damper (1) of claim 1, wherein the second component (18) is formed on the secondary flange (6) as a portion (20) that protrudes outward in the radial direction (R) of the pendulum rocker damper (1) or is connected to the secondary flange (6).

5. 2. The pendulum rocker damper (1) of claim 1, wherein the primary flange (5) and the secondary flange (6) overlap in the axial direction (A) of the pendulum rocker damper (1) and are arranged in the same axial plane.

6. 2. The pendulum rocker damper (1) of claim 1, wherein the first component (17) is configured as a spring device (21) preloaded in the axial direction (A) of the pendulum rocker damper (1) against the secondary flange (6) and / or the second component (18) is configured as a spring device (21) preloaded in the axial direction (A) of the pendulum rocker damper (1) against the primary flange (5).

7. 7. The pendulum rocker damper (1) of claim 6, wherein the spring device (21) comprises two spring leaves (22) fixed to the secondary flange (6), one of the spring leaves (22) being arranged on one side of the secondary flange (6) and the other of the spring leaves (22) being arranged on the other side of the secondary flange (6) in the axial direction (A), and the two spring leaves (22) frictionally clamp the primary flange (5) between them.

8. 8. The pendulum rocker damper (1) according to claim 7, wherein the spring leaf (22) is fixed to a portion (20) of the secondary flange (6) that projects outward in the radial direction (R) and is in friction-locking contact with a circular arc portion (25) of the primary flange (5), the circular arc portion (25) being limited in the circumferential direction (U) of the pendulum rocker damper (1) by two stops (24) that project inward in the radial direction (R), the portion (20) on the secondary flange side being able to come into contact with one of the stops (24) in each case so as to limit the rotation of the pendulum rocker damper (1).

9. 7. The pendulum rocker damper (1) of claim 6, wherein the spring device (21) comprises two spring leaves (23) fixed to the primary flange (5), one of the spring leaves (23) being arranged on one side of the primary flange (5) and the other of the spring leaves (23) being arranged on the other side of the primary flange (5) in the axial direction (A), and the two spring leaves (23) frictionally clamp the secondary flange (6) between them.

10. 10. The pendulum rocker damper (1) according to claim 9, wherein the spring leaf (23) is configured in the form of a circular arc segment and is in friction-locking contact with the outwardly projecting portion (20) of the secondary flange (6), the primary flange (5) having two stops (24) projecting inward in the radial direction (R) and spaced apart from each other in the circumferential direction (U) of the pendulum rocker damper (1), the portion (20) on the side of the secondary flange being able to come into contact with one of the stops (24) in each case so as to limit the rotation of the pendulum rocker damper (1).

Images