JP5076205B2 - Torsional vibration attenuator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a torsional vibration attenuator, in particular a split flywheel, having at least one input part and at least one output part, said input part and output part being arranged coaxially with each other and at least one. The present invention relates to a type that can rotate relative to each other against the resistance of two energy storage devices.
[0002]
[Prior art]
For example, in a conventional torsional vibration attenuator as described in DE 198334728 A1, the output part is configured as a cast part. The structure as the cast part has the advantage that the heat generated during operation can be absorbed without the output part forming distortion. Of course, a relatively high processing cost is required to produce the cast part.
[0003]
[Problems to be solved by the invention]
The object of the present invention is to reduce the processing and manufacturing costs for a torsional vibration damper of the type mentioned at the outset.
[0004]
Furthermore, a torsional vibration attenuator constructed in accordance with the present invention allows for a compact configuration type in the radial and / or axial direction, such a torsional vibration attenuator having a laterally integrated drive and is provided. We want to be able to use even in the case of a car with a relatively small construction space.
[0005]
[Means for Solving the Problems]
The subject of the invention is a torsional vibration attenuator, in particular a split flywheel, having an input part and an output part, the input part and the output part being arranged coaxially with each other and the resistance of at least one energy storage device This is solved in that the output part is formed as a composite part made of at least two different materials. By configuring the output part as a composite part, the advantage is obtained that various materials having different properties can be combined with each other in relation to the function of each region of the output part.
[0006]
A feature of an advantageous embodiment of the torsional vibration attenuator is that the output comprises a holding device, a thermal buffer device and / or a heat induction device. The holding device serves to hold a thermal buffer device or a heat induction device which is preferably formed from one of at least two materials and is preferably formed from the other material of said at least two materials. In an advantageous manner, the thermal buffer device or the thermal storage device can consist of a cast part.
[0007]
A feature of another advantageous embodiment of the torsional vibration attenuator is that the holding device is made of a material that is easy to deform, in particular cold deformable. Good deformation processability ensures a cost-effective production of the holding device, for example by drawing and / or pressing of sheet material.
[0008]
Another advantageous embodiment of the torsional vibration attenuator is characterized in that the heat storage device is made of a material that also has a high heat conductivity. The high heat conductivity ensures that the heat generated during operation is quickly absorbed by the heat storage device and released, for example, to the holding device.
[0009]
A feature of another advantageous embodiment of the torsional vibration attenuator is that the holding device is provided with a plurality of functional points. Said functional part serves for example for fixing a heat induction device or a heat storage device and / or a clutch. The integration of the functional parts into the holding device offers the advantage that the heat induction device and / or the heat storage device can be produced in a casting process without the functional parts that have to be additionally processed. At least the components configured as a heat induction device and / or a heat storage device have a particularly simple configuration, for example, can be configured in a ring shape, which greatly simplifies and generates the components. Defective products are reduced. Such a configuration is particularly advantageous in the case of cast components. This is because this reduces the strain when the component cools and the formation of cast holes inside the component. Another advantageous embodiment of the torsional vibration attenuator is characterized in that the holding device forms a second ring-shaped region radially outward of the first ring-shaped region, the second ring-shaped region. In some cases, the plurality of openings are particularly equally distributed in the circumferential direction. Said openings serve to receive means for fixing the holding device to a flange cooperating with the energy storage. The fixing means can be, for example, a rivet coupling member.
[0010]
Another advantageous embodiment of a torsional vibration attenuator is characterized in that a third ring-shaped region is formed in the holding device, radially outside the second ring-shaped region, the third ring-shaped The heat storage or heat induction device can be contacted at least partially in the state where the output portion is incorporated. The third ring-shaped region forms an axial counterpart for the heat storage device or the heat induction device. At least one of the regions of the holding device can be configured as a circular ring.
[0011]
A feature of another advantageous embodiment of the torsional vibration attenuator is that a plurality of openings are arranged in the third ring-shaped region in a particularly evenly distributed manner in the circumferential direction, the openings being used for heat storage and / or heat induction devices. It is used to receive means for securing to the holding device. This fixing device can be, for example, a rivet coupling member.
[0012]
Another advantageous embodiment of the torsional vibration attenuator is characterized in that a plurality of protrusions are formed in the third ring-shaped region, the protrusions projecting to the side of the holding device facing the heat induction device, It is used to center and / or fix the guide device to the holding device. The protrusion provides the advantage that an additional fixing member, for example a rivet, can be abandoned. However, the protrusions can also be used only to guarantee pre-centering when assembling the heat storage or heat induction device and the holding device. This allows the bond undertaking to finally hold both components together to be formed in a simple manner. This is because in this case both components are already correctly positioned.
[0013]
Another advantageous embodiment feature of the torsional vibration attenuator is characterized in that a fourth ring-shaped region or section is configured on the radially outer side of the third ring-shaped region or section in the holding device. A plurality of openings are arranged in the region or section in the circumferential direction, in particular equally distributed, said openings being used for receiving means for fixing the clutch cover to the holding device, for example . The opening may include a thread for receiving a screw.
[0014]
Although the holding device can be constructed in one piece, it is also expedient for many fields of use that the holding device consists of at least two single components. This single component can be connected to each other, for example, via a rivet connection and / or a weld connection. What is appropriate in this case is that at least one of the components forms a cylindrical region or additional part which serves for radial support.
[0015]
This cylindrical region can be transferred in an advantageous manner to a radially extending region which is preferably configured in a ring shape. A component that forms a cylindrical or axial region in an advantageous manner via this radially extending region can be combined with another component of the holding device.
[0016]
Another advantageous embodiment of the torsional vibration attenuator is characterized in that the first, second, third and fourth ring-like regions extend in different planes perpendicular to the rotation axis of the output part. is there. The plane in which the first and third ring-shaped regions are arranged can advantageously be arranged between the plane in which the second and fourth ring-shaped regions are arranged. The plane in which the fourth ring-shaped region is disposed can be farther from the output portion than the plane in which the first, second, and third ring-shaped regions are disposed. A torsional vibration attenuator configuration having such characteristics has proven particularly advantageous for the function and assembly of the individual components.
[0017]
Another advantageous embodiment of the torsional vibration attenuator is characterized in that the plane in which the third ring-shaped area is arranged is arranged between the plane in which the first and second areas are arranged. is there. This arrangement has proven particularly advantageous in optimizing the configuration space for the individual components of the torsional vibration attenuator.
[0018]
Another advantageous embodiment feature of the torsional vibration attenuator is provided in the fourth ring-shaped region with means which serve to center the clutch cover with respect to the holding device. The centering means, for example, protrudes into the opening of the holding device facing the heat storage device and into a correspondingly configured opening in the clutch cover.
[0019]
Another advantageous embodiment of the torsional vibration attenuator is characterized in that an inclined surface is formed in the third and fourth ring-shaped regions and a heat storage device or a heat induction device is in partial contact with the inclined surface. . This allows the device to be supported radially outward. Such an encapsulation of a heat storage or heat induction device acts positively on the fixation of the device, especially at high rotational speeds.
[0020]
A feature of another embodiment of the torsional vibration attenuator is that the profile of the heat induction device is at least partially adapted to the profile of the holding device on the side facing the holding device. This ensures a good contact of the heat induction device with the holding device.
[0021]
A feature of another advantageous embodiment of the torsional vibration attenuator is that a plurality of openings are arranged in the heat induction device with a particularly even distribution in the circumferential direction, these openings inter alia fixing the heat induction device to the holding device and / or It is used to receive the means for centering. The fixing means in this case can be, for example, a roller configured in a rivet and / or holding device. Rivets or rollers can also be used for centering.
[0022]
Another advantageous embodiment of the torsional vibration dampener is characterized in that the holding device and the heat storage or heat induction device have partial surfaces which together form a friction surface. This friction surface cooperates with the friction lining of the clutch disc during operation.
[0023]
The friction surface formed by the partial surfaces of the two component parts, at least the holding device and the heat storage or heat induction device are first coupled together, and only after that, the partial surfaces of the two component parts form a friction surface. It can be manufactured by processing. In an advantageous manner, this processing can include at least one rotational operation. A particularly advantageous configuration of the torsional vibration attenuator is achieved by forming a friction surface section in which the partial surfaces of the holding device forming the friction surface are radially outward.
[0024]
A feature of another advantageous embodiment of the torsional vibration attenuator is that the holding device is configured as a thin plate deformation part. Constructing the holding device as a thin plate deformation part offers the advantage that the holding device can be manufactured with tools with integrated functional points. This has a positive effect on the production costs.
[0025]
Another advantageous embodiment feature of the torsional vibration dampener is that the holding device is made of non-alloyed or low-alloy building steel, such as StW23. Such steel can be deformed satisfactorily and nevertheless has sufficient strength. However, the holding device can also consist at least in part of aluminum or plastic.
[0026]
Another advantageous embodiment of the torsional vibration damper is characterized in that the heat induction device is formed from a casting, for example GG25. The use of castings has the advantage that both heat storage or heat induction device casting and possibly subsequent cutting can be carried out at a relatively low cost. Gray cast iron GG25 has the advantage of particularly good machinability.
[0027]
Another advantageous embodiment of the torsional vibration damper is characterized in that the input part is a component of a primary mass that can be coupled to the internal combustion engine and the output part is a secondary mass that can be coupled to the transmission input shaft. It is a component part of.
[0028]
For the configuration and function of the torsional vibration attenuator according to the invention, the retaining device has a radially outer ring-shaped region, which is also used for fixing the friction clutch cover. It also serves to partially form a friction surface that cooperates with the friction lining of the plate. What is appropriate in this case is that the holding device has a bowl-shaped part or a dish-shaped part on the radially inner side of the ring-shaped region on the radially outer side. It has received the ring-shaped component which forms a heat induction apparatus.
[0029]
The input portion of the torsional vibration attenuator can advantageously have at least two ring-shaped components that form at least a radially extending region that limits the ring-shaped chamber. An energy storage device may be at least partially received in the chamber. In order to obtain an energy storage device provided in the room, a flange connected to an output portion, in particular, a holding device, is provided. The flange extends from the inside in the radial direction into the chamber and supports or loads the energy storage device. Formed to load. One of the ring-shaped components that restricts the chamber in an advantageous manner, in particular the component adjacent to the internal combustion engine, has a radially inner region, through which the component is connected to the output shaft of the internal combustion engine. Can be bindable. This ring-shaped component can further serve for the centered bearing of the holding device. In this case, for this purpose, the ring-shaped component has an additional part in the axial direction, on which a bearing device is provided. The ring-shaped component adjacent to the holding device is configured inside the torsional vibration attenuator so that the component is in the axial dimension of the holding device as viewed in the axial direction of the torsional vibration attenuator. And can be arranged.
[0030]
Further advantages, features and details of the present invention are disclosed in the following description, in which various embodiments are individually described with reference to the drawings.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
A torsional vibration attenuator in the form of a flywheel 1 shown in FIG. 1 has a primary mass 2 that can be fixed to a crankshaft of an internal combustion engine of an automobile, and a bearing 3 is provided on the primary mass 2. The secondary mass body 4 is supported coaxially and rotatably about the rotation axis 5.
[0032]
The primary mass 2 is drivingly coupled to the secondary mass 4 via a damping device 7 having a compressible energy storage 6. The accumulator 6, in this case a circumferentially elongated coil spring with a large compression stroke, is received in a chamber 14 which can be at least partly filled with a viscous medium. The chamber 14 is limited by two components 15, 16 that can be manufactured from thin plates. The component 15 has a radially extending region 17 that can be coupled to the crankshaft of the internal combustion engine with a screw 18 radially inward and transitioning radially outward to an axial addition 19. Yes. A component 16 that forms a separation wall is tightly fixed to the additional portion 19. This component 16 holds the starting tooth ring 20 radially outward.
[0033]
The components 15, 16 have support areas 22, 23 for the energy storage 6. The output of the torsionally elastic damping device 7 is formed by a ring-shaped or flange-shaped component 24. The component 24 has an overhang 25 on the radially outer side. This overhang 25 extends in the radial direction between the end regions of two adjacent energy accumulators 6. During the relative rotation between the flange portion 24 and the primary mass body 2, the energy storage device 6 is compressed between the overhang portion 25 and the support regions 22 and 23.
[0034]
A radially inner region 26 of the flange 24 is fixedly connected to the secondary mass 4 by rivets 27. The radially inner edge region 28 of the component 24 forms a molded part that engages the corresponding molded part of the friction disk 29. The molding part and the corresponding molding part are advantageously configured such that there is a predetermined rotational play between them. Therefore, when the rotational direction is reversed between both mass bodies 2 and 4, the friction control disk 29 of the hysteresis device 30 does not act until the rotational play is used up initially.
[0035]
A friction disk 29 made of plastic is supported by a ring-shaped thin plate component 31. The thin plate component 31 is fixed to the primary mass body 2 by a roller 32. In the embodiment shown, the head of the screw 18 likewise serves to secure the component 31 in the axial direction. Between the friction disk 29 and the primary mass body 2 in the axial direction, an energy storage device contracted in the axial direction in the form of a disc spring 33 is arranged.
[0036]
In order to form the bearing 3, an additional portion 35 having an L-shaped cross section having a sleeve-like axial region 34 is formed in a region 17 extending in the radial direction. The sleeve-like region 34 extends in the axial direction into a notch 38 in the secondary mass 4. A sliding bearing bush 41 is arranged between the cylindrical surface 39 limiting the notch 38 and the cylindrical outer surface 40 of the sleeve-like region 34 in the radial direction. The sliding bearing bush 41 ensures both radial guidance and axial support of both fly masses 2,4.
[0037]
The secondary mass body 4 of the flywheel 1 includes a holding device 44 and a heat storage or heat induction device 46. The holding device 44 and the heat induction device 46 have a common flat friction surface 48 on the side opposite to the primary mass 2. The friction surface 48 is arranged perpendicular to the rotation axis 5 and is formed by turning.
[0038]
The heat induction device 46 has the shape of a circular ring having a substantially square cross-section and configured with an inclined shoulder 50. The inclined shoulder 50 is arranged at an angle of approximately 45 ° with respect to the axis of rotation 5 and is directed towards the primary mass 2. Further, the heat induction device 46 is provided with a hopper-shaped notch 51. This notch 51 has shifted to a cylindrical notch 52. The hopper-shaped notch 51 forms a through-opening that receives the rivet 54 in combination with the cylindrical notch 52. The rivet 54 shown in FIG. 1 is fixed to a stepped cylindrical notch 55 in the holding device 44. The end of the rivet 54 located in the hopper-like notch 51 of the heat induction device 46 expands conically and is turned flat at the end to form a common flat friction surface 48. .
[0039]
The notch 38 of the holding device 44 is formed by a sleeve-like region 57 disposed coaxially with the rotation axis 5. A first ring-shaped disk 58 extends from the sleeve-shaped region 57 in the radial direction. The first ring-shaped disk 58 has a through opening 59 cut out. Through opening 59 allows the passage of a mounting tool which serves to couple screw 18 to the crankshaft of the internal combustion engine. The transition between the sleeve-like region 57 and the first ring-shaped disc 58 is rounded.
[0040]
The first ring-shaped disk 58 is followed by a first transition region that is curved radially outward and curved toward the primary mass 2 as viewed in cross section. This transition region has transitioned to the second ring-shaped disc 62. A through opening 63 for the rivet 27 is cut out in the second ring-shaped disk 62. The rivet 27 serves to couple the holding device 44 with the flange-like component 24.
[0041]
Extending radially outward from the second ring-shaped disc 62 is a second transition region curved in a direction away from the primary mass 2 as viewed in cross section. Has shifted to a third ring-shaped disk 66. The third ring-shaped disc 66 has a hopper-like cutout 51 and a cylindrical cutout 52 that are useful for receiving the rivets 54.
[0042]
An inclined portion 68 extends parallel to the inclined shoulder 50 of the heat induction device 46 from the outer edge portion of the third ring-shaped disk 66. The inclined portion 68 forms the contact surface for the inclined shoulder 50 of the heat induction device 46 on the side opposite to the primary mass 2.
[0043]
A fourth ring-shaped disk 71 protrudes from the radially outer edge of the inclined portion 68, and a through opening 72 is notched in the disk 71. The through-opening 72 serves to receive fixing means not shown in FIG.
[0044]
The first, second, third and fourth disks 58, 62, 66 and 71 are arranged perpendicular to the rotation axis 5 and on different planes extending from each other. The second ring-shaped disc 62 is in contact with the flange-shaped component 24. The third ring-shaped disk 66 is arranged somewhat closer to the second ring-shaped disk 62 than the first ring-shaped disk 58. The fourth ring-shaped disk 71 is farther away from the second ring-shaped disk 62 than the first and third ring-shaped disks 58 and 66.
[0045]
2 is substantially equivalent to the tsumas flywheel 1 shown in FIG. The same parts are denoted by the same reference numerals, and to that extent, refer to the description of FIG. Only the differences between both embodiments are described below.
[0046]
In the embodiment shown in FIG. 1, the heat induction device 46 is held by the holding device 44 with a rivet 54. Since the rivet 54 is turned at the end face when the common flat friction surface 48 is machined, the friction surface 48 is closed.
[0047]
In the embodiment shown in FIG. 2, the heat induction device 46 is coupled to the holding device 44 by a roller 53. The roller 53 is formed on the holding device 44 by pressing. The notches 51 and 52 can be formed by a casting method, and the common flat friction surface 48 is interrupted in a state where the secondary mass body 4 is assembled.
[0048]
As a result of the construction of the flywheel 1 shown in FIGS. 1 and 2 as a composite part, the production costs are significantly reduced. In the embodiment shown in FIGS. 1 and 2, the energy accumulator is arranged radially outward. The heat induction device 46 is manufactured from cast iron GG25. The holding device 44 is manufactured from a thin plate StW23. The holding device 44 serves for bearing support, screwing and centering of the clutch cover, and coupling with the flange 24. The sheet section 44 is joined together with a heat induction device 46 configured as a raw cast section and then partially turned together and adjusted to be exactly flush with the cast to form part of the friction surface 48. Is made. The heat induction device 46 can be manufactured from GG25 based on its thermal induction effect and friction function and being encapsulated in the holding device 44. The holding device 44 can be coupled to the heat induction device 49 by a pin in addition to the rivet 54 or roller 53 shown. The holding device 44 is preferably constructed as a thin-drawing part.
[0049]
The embodiment shown in FIG. 3 has a configuration close to that of the embodiment shown in FIGS. The same parts are denoted by the same reference numerals, and to that extent, reference is made to the description of FIGS. Hereinafter, only differences between the examples will be mentioned here.
[0050]
Unlike the embodiment shown in FIGS. 1 and 2, in the embodiment shown in FIG. 3, the shoulder 50 of the heat induction device and the section 68 of the holding device 44 configured in a corresponding shape are lightly curved. It is made to be configured. The curvature of the holding device 44 with respect to the shoulder 50 of the section 68 is configured as a convex.
[0051]
In the embodiment shown in FIG. 3, not all symbols used in FIGS. 1 and 2 are used to make the drawing easier to see. In FIG. 3, the flywheel 1 is provided with a friction clutch 75. The friction clutch 75 has a clutch cover 76 fixed to the holding device 44. The clutch cover 76 supports a disc spring 77 that cooperates with the pressure plate 78. A crimping surface 79 that is congruent with the friction surface 48 is formed on the crimping plate 78. The crimping surface 79 is disposed so as to oppose the friction surface 48. Between the friction surface 48 and the crimping surface 79 are friction linings 80, 81 attached to the clutch disc 82. The clutch disc 82 is connected to the transmission input shaft 84 with a damping device 83 interposed therebetween.
[0052]
The clutch cover 76 is fixed to the holding device 44 with a screw 85. The screw 85 is screwed into a screw groove formed in an opening in the fourth ring-shaped disk 71. FIG. 4 shows a cross section shifted in the circumferential direction of the fourth disk 71 with respect to the cross section shown in FIG. From FIG. 4, it can be seen that the protrusion 86 is formed on the fourth ring-shaped disk 71. The protrusion 86 enters into a corresponding opening cut out in the clutch cover 76 in order to center the clutch cover 76 in a state in which the flywheel 1 is assembled. This facilitates overcoming the preload force of the disc spring 77 when assembling the flywheel 1.
[0053]
The advantages of the solution shown in FIGS. 3 and 4 are that it eliminates the need for cutting operations, drilling, threading, turning bearing seats, turning the clutch cover contact and attaching the centering pin to the holding device 44 configured as a thin plate part. In other words, manufacturing without using a tool becomes possible.
[0054]
The claims filed in this application are examples of proposals and do not imply waiver of patent protection in another form. Applicant reserves the right to apply for a patent for any combination of features currently disclosed in the specification and / or drawings.
[0055]
Citation of other claims used in the dependent claims indicates a modification of the invention of the independent claim due to the features of each dependent claim, and protection as an independent invention for the combination of features of the dependent claims cited. It should not be construed as an abandonment.
[0056]
Applicants reserve the right to make the subject of a dependent claim an independent claim or a split invention, as the subject of the dependent claim relates to the prior art of the prior art of the priority claim and may form a unique independent invention. . Further, the subject matter of the dependent claims also includes an independent invention having a configuration unrelated to the subject matter of the preceding dependent claims.
[0057]
The examples should not be construed as limiting the invention. Rather, many variations and modifications are possible within the disclosed frame. In particular, combinations or modifications associated with the individual features or elements or method steps shown in the description and the examples and in the claims and drawings can be conceived and combined with the solution of the problem by those skilled in the art. It is easy for a person skilled in the art, in terms of manufacturing, inspection and working methods, to arrange new equipment, objects or methods or sequence of method steps according to the features that can be combined.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view of a torsional vibration attenuator according to a first embodiment of the present invention.
FIG. 2 is a partial cross-sectional view of a torsional vibration attenuator according to a second embodiment of the present invention.
FIG. 3 is a partial sectional view of a torsional vibration attenuator according to a third embodiment of the present invention.
4 is a cross-sectional view of a portion of the centering device of the torsional vibration attenuator shown in FIG. 3;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Thousand flywheel, 2 Primary mass body, 3 Bearing, 4 Secondary mass body, 6 Energy storage device, 7 Damping device, 14 Chamber, 15, 16 Component part, 18 Screw, 19 Additional part, 20 Starting tooth ring, 22 , 23 Support region, 24 component part, 25 overhang part, 27 rivet, 29 friction control disk, 30 hysteresis device, 31 thin plate part, 35 additional part, 38 notch, 44 holding device, 46 heat storage or heat induction device, 50 Shoulder, 51 Notch, 52 Notch, 54 Rivet, 58 Disc, 62 Disc, 66 Disc, 71 Disc, 75 Friction Clutch, 76 Clutch Cover, 77 Disc Spring, 78 Crimp Plate, 80, 81 Friction Lining

Claims (32)

A torsional vibration damper, and at least one output portion and at least one input portion, an input portion and an output portion disposed coaxially with each other and together against the resistance of at least one蓄energy unit In the type that is relatively rotatable, the output part is formed as a composite part made of at least two different materials, and the output part (4) comprises a holding device (44) and a heat storage device (46). Torsional vibration, characterized in that the holding device (44) and the heat storage device (46) together have a partial surface forming a friction surface (48) Attenuator. It said holding device (44) is formed from a deformable easily processed material, vibration damper torsional according to claim 1. The torsional vibration attenuator according to claim 1 or 2 , wherein the heat storage device is made of a material having a good specific heat capacity. The torsional vibration attenuator according to any one of claims 1 to 3 , wherein the holding device (44) comprises a plurality of functional parts (55, 59, 63, 72). The torsional vibration attenuator according to any one of claims 1 to 4 , wherein the holding device has a substantially circular ring shape, and a cylindrical region is formed on an inner periphery of the circular ring. Has a first ring-shaped region which is arranged radially outwardly of the holding device the cylindrical region (57), a plurality of through openings to the area being cut, according to claim 5, wherein Torsional vibration attenuator. A second ring-shaped region arranged radially outwardly of the holding device a first ring-shaped region, the plurality of apertures in a ring-shaped region of said second circumferential direction and evenly 7. A torsional vibration dampener according to claim 6 , wherein the torsional vibration attenuator is arranged in a distributed manner and is used to receive means for securing the retaining device to a flange portion cooperating with the energy accumulator. The heat storage device has a third ring-shaped region configured outside the second ring-shaped region, and an output portion is attached to the third ring-shaped region. The torsional vibration dampener according to claim 7 , wherein at least partly contacts. The third plurality of apertures in a ring-shaped region circumferential direction, are arranged to be distributed evenly, the opening is used for fixing the heat storage device to the holding device, according to claim 8 Torsional vibration attenuator. A plurality of protrusions are configured in the third region, the protrusions protrude to the side of the holding device facing the heat storage device, and are used to fix the heat storage device to the holding device. The torsional vibration attenuator according to claim 8 or 9 . The holding device has a fourth ring-shaped region arranged radially outwardly of the third, in the circumferential direction in the ring-shaped region of the fourth, is distributed evenly plurality of openings arranged 11. A torsional vibration dampener according to any one of claims 8 to 10 , wherein the opening is used to receive means for securing a clutch cover to the holding device. Different planes in which the first ring-shaped region, the second ring-shaped region, the third ring-shaped region, and the fourth ring-shaped region extend perpendicular to the rotation axis of the output portion. The torsional vibration attenuator of claim 11 disposed within. A plane on which the first ring-shaped region and the third ring-shaped region are arranged is a plane on which the second region and the fourth region are arranged as viewed in the axial direction. The torsional vibration attenuator according to claim 11 or 12 , which is disposed between. The plane on which the fourth ring-shaped region is disposed is disposed farther from the input unit than the plane on which the first region, the second region, and the third region exist. The torsional vibration attenuator according to any one of claims 11 to 13 . The third plane of the ring-shaped region is arranged, said first region and said second region is located between the planes are located, one of the claims 8 to 14 A torsional vibration attenuator according to claim 1. The torsional vibration attenuator according to any one of claims 11 to 15 , wherein means for centering a clutch cover relative to the holding device is provided in the fourth ring-shaped region. Inclined portion is formed between the third region and the fourth region, the heat storage device to the inclined portion in at least partial contact any one of claims 11 to 16 Torsional vibration attenuator. The contour of the heat storage device on the side facing the holding device is adapted to form at least partially the holding device, vibration damper torsional any one of claims 1 to 17. Wherein the plurality of openings in the circumferential direction in the thermal storage device, is arranged to be distributed evenly, the opening is used for receiving the means for fixing and / or centering the heat storage device to the holding device, wherein Item 19. The torsional vibration attenuator according to any one of Items 1 to 18 . Said holding device is formed from at least one sheet deformed portion, vibration damper torsional any one of claims 1 to 19. It said holding device is formed, et al or non-alloy steel or low alloy steel, vibration damper torsional any one of claims 1 to 20. The torsional vibration attenuator according to claim 21, wherein the holding device is made of StW23. The heat storage device is cast product or al formation, vibration damper torsional any one of claims 1 to 22. The torsional vibration attenuator according to claim 23, wherein the heat storage device is formed of GG25. It said input portion (2) is a component of the primary mass capable of binding to the internal combustion engine, wherein the output portion is a component of the second mass member capable of binding to the transmission input shaft, claim 1 The torsional vibration attenuator according to any one of up to 24. The holding device has a ring-shaped region radially outward, and the region partially forms a friction surface that cooperates with the friction lining of the clutch disk of the friction clutch to fix the cover of the friction clutch 26. A torsional vibration attenuator according to claim 1 , wherein the torsional vibration attenuator is also used.   27. A torsion according to claim 26, wherein the holding device has a bowl-shaped portion radially inward of a radially outer ring-shaped region, the bowl-shaped portion receiving a ring-shaped component forming the heat storage device. Vibration attenuator.   The input part (2) has at least two ring-shaped components, the components having a radial region that limits a ring-shaped chamber at least partially receiving the energy accumulator. 28. A torsional vibration attenuator according to any one of 1 to 27.   One of the ring-shaped components has a radially inward region to fix the output shaft of the internal combustion engine, and the retaining ring (44) is rotatable using the ring-shaped component. 29. A torsional vibration attenuator according to claim 28, being supported.   30. A torsional vibration attenuator according to claim 29, wherein said ring-shaped component which can be coupled to the engine output shaft has an axial addition, on which a holding device (44) is mounted. . The holding device (44) is adjacent to one of the ring-shaped components and the axial dimension of the ring-shaped component is located within the axial dimension of the holding device (44). A torsional vibration attenuator according to any one of claims 28 to 30. The torsional vibration attenuator according to any one of claims 1 to 31, wherein the torsional vibration attenuator is a divided flywheel.

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