DE102014213116A1 - torsional vibration dampers - Google Patents

Abstract

The invention relates to a torsional vibration damper (1) having a damper part (3) and a damper flange part (4) which is rotatable against the action of energy storage devices relative to the damper part (3) within a torsional backlash. The damper part (3) comprises a sliding shell (2) radially outer circumferential region of the energy storage devices (F1) encompassing sliding surfaces (7.1, 7.2) and the Dämpferflanschteil (4) spaced in the circumferential direction and the energy storage devices (F1) in the circumferential direction between receiving and acted upon loading areas. The invention is characterized in that the sliding shell (2) is formed by at least two sliding shell parts (2.1, 2.2) which are at least indirectly connected to one another and each have one or more sliding surfaces (7.1, 7.2), wherein the sliding surfaces (7.1, 7.2) the individual slip-shell parts (2.1, 2.2) are arranged spaced from one another in the axial direction, forming a completely circumferential axial gap (8), in which the damper flange part (4) engages or extends therethrough.

Description

The invention relates to a torsional vibration damper, in detail with the features of the preamble of claim 1.

Such a torsional vibration damper is for example in the document DE 10 2011 015 637 A1 disclosed. The torsional vibration damper comprises a damper component and a damper flange part that can be rotated in a limited manner against the action of energy storage devices with respect to the damper component within a torsional backlash. The damper component is designed radially on the outside as a sliding shell and surrounds the radially outermost peripheral region of the energy storage devices. The damper flange part comprises circumferentially spaced and the energy storage devices circumferentially between them receiving and acted upon Beaufschlagungselemente. Cutouts are formed in the sliding shell, in which the loading elements radially engage in the cutouts while permitting the play of backlash. In this case, the cutouts are located at a radially outer peripheral portion of the sliding shell in the area in which the energy storage devices are pressed by centrifugal force most to the sliding shell to reduce the friction between the energy storage devices and the sliding shell. The specific embodiment relates to a damper assembly with a damper stage.

Based on this prior art, the present invention seeks to further develop a torsional vibration damper such that the radial support of the energy storage units with simultaneous friction reduction in the radially outer region for energy storage devices in torsional vibration damper designs with a plurality of staggered in the radial direction damper stages is used.

The solution according to the invention is characterized by the features of claim 1. Advantageous embodiments are described in the subclaims.

A torsional vibration damper having a damper portion and a damper flange portion constrained against the action of energy storage devices against the damper portion within a torsional backlash, the damper portion comprising a sliding cup with the radially outer peripheral portion of the energy storage devices at least partially encompassing sliding surfaces and the damper flange portion circumferentially spaced and the energy storage devices in the circumferential direction has between receiving and acted upon Beaufschlagungsbereiche, according to the invention is characterized in that the sliding of at least two at least indirectly rotatably connected to each other and sliding surfaces having Gleitschalenteilen is formed, wherein the sliding surfaces of the individual Gleitschalenteile spaced to form a circumferentially circumferential cutout to each other in the axial direction are arranged, in which the damper f lanschteil engages or extends therethrough.

The term "part" is to be understood functionally and is not limited to a single component in terms of structural design. Thus, a damper part in the form of a primary part of one or more components, which are connected to each other rotatable or non-driving, are formed.

If two components are connected at least indirectly, the connection can be made directly or indirectly via further intermediate components and / or transmission means.

Under energy storage devices are understood in particular arrangements of single or multiple spring devices. A single spring device may comprise at least one spring element or at least two or a plurality of spring elements. Embodiments of a single spring device with a plurality of spring elements are characterized by a parallel arrangement of these, for example in the form of nested spring elements or a series arrangement of spring elements or a combination of the two aforementioned possibilities.

The function of the sliding surfaces consists in the at least indirect support of the energy storage devices by line or surface contact with the outer peripheral surfaces of these under relative movement relative to these.

A major advantage of a split formed sliding shell is a simple integration in complex damper designs, easy installation and the ability to provide very large Gleitflächenbereiche. Furthermore, the sliding surface regions can be positioned arbitrarily with respect to the outer circumference of the energy storage device with simple assembly.

The split design of the sliding shell also offers the advantage that it can also be used in damper designs with a plurality of mutually offset in the radial direction and coupled to each other via a common damper flange damper assemblies in the radially inner damper stages used. Particularly advantageous is the embodiment in torsional vibration dampers with several parallel damper stages, in which the energy storage devices comprising damper stage is arranged radially inwardly and the radially outer damper stage includes at least one hydraulic damper assembly.

With regard to the execution of the individual sliding surface, in a first embodiment it is possible to design the individual sliding surface on a sliding shell part as sliding surface circumferentially closed circumferentially. Providing a circumferential sliding surface simplifies production in integral training with the sliding shell part as well as on a separate component , in particular support element.

In a second embodiment, the single sliding surface on a sliding shell part can be designed as extending over a partial area in the circumferential direction extending surface, wherein at a sliding shell part in the circumferential direction at least two such sliding surfaces are arranged spaced from each other. The training takes place at least in the unloaded state on the extension of the spring device to be supported in the circumferential direction.

With regard to an advantageous further embodiment, the individual sliding surface is formed on a sliding shell part in such a way that it regards the energy storage device in the circumferential direction around the longitudinal axis of the individual spring device characterizing the longitudinal direction of the energy storage device on the outer circumference of the spring device in an angle range between 20 ° and 70 °, preferably 40 ° ° and 65 ° surrounds. This corresponds to a view in axial section, i. a sectional plane which can be described by the axis of rotation of the torsional vibration damper and a perpendicular thereto, embracing the spring device with respect to a coordinate system to the longitudinal axis of the energy storage device in the first and fourth quadrant. The sliding surface can thereby ensure both a radial support and axial support, since the force acting as a result of the centrifugal force and the spring forces at compression of the springs forces are divided into a radially acting and an axial force component.

The sliding surfaces provided on a Gleitschalenteil form axial and / or radial support surfaces. In a particularly advantageous embodiment, the sliding surfaces provided on a Gleitschalenteil form both axial and radial support surfaces for the energy storage devices.

• – Anprägen
• – Umformen
• – Trennen und Umformen
• – spanende Bearbeitung.

The individual sliding surfaces themselves can either be formed directly on the sliding shell part, in particular integrally formed on a sliding shell part. The integration offers the advantage of training at anyway existing wall areas free of additional space and material required. In an advantageous embodiment, the sliding shell part is designed as a shaped sheet metal part and the sliding surfaces produced by at least one method selected from the group of the following methods:

• - Imprinting
• - Forming
• - separating and forming
• - Machining.

In an alternative embodiment, the individual sliding surface is formed on a separate component, in particular supporting element, which is connected at least with a firm grip to the sliding shell part. The arrangement on a separate component offers the advantage that the basic component, i. the supporting elements supporting member does not need to be additionally processed.

• – kraftschlüssig
• – formschlüssig
• – stoffschlüssig.

The connection between the support element and the sliding shell part is carried out as a connection selected from the group of following connections:

• - non-positive
• - positive fit
• - cohesive.

In a particularly advantageous embodiment, the connection is releasable by positive engagement.

The sliding surface may be further hardened or coated to increase the strength and the characterizing properties thereof.

With regard to the materials used for the sliding surfaces bearing components there are a number of possibilities. These can be made of metal, plastic, ceramic or composite materials, with good sliding properties and favorable wear properties are in the foreground.

The connection of the Gleitschalenteile takes place outside the sliding surfaces. This is preferably solvable.

In a particularly advantageous embodiment, the split sliding shell is used in parallel dampers with a plurality of staggered in the radial direction arranged damper stages. For this purpose, the torsional vibration damper comprises at least one primary part formed by the damper part and a secondary part designed as a damper flange which, relative to one another in the circumferential direction, counteracts the effect of at least two radially offset energy storage units comprising damper stages which are effective in both damper stages, two side disks spaced apart from one another in the axial direction and at least indirectly connected to one another in a rotationally fixed manner, and the secondary part comprises at least one middle disk arranged between the side disks. This torsional vibration damper is characterized in that the individual sliding surfaces are assigned to the damper part of the radially inner damper stage. In particular, when the radially outer damper stage additionally or alternatively has a hydraulic damper assembly with damping chambers, which are filled with a damping medium and each having at least one throttle opening, wherein the hydraulic damper stage is acted upon via the damper flange, the split sliding provides the advantage of a simple feasible combined Axial and radial support.

Radially staggered arrangements in series dampers are also conceivable.

The solution according to the invention is explained below with reference to figures.

It details the following:

1a illustrates in schematic simplified representation of the formation of a torsional vibration damper with split sliding shell;

1b illustrates in schematic simplified representation of the formation of a torsional vibration damper in the form of a parallel damper with split sliding shell;

2a and 2 B show by way of example a structural design according to 1b in two views;

3 shows a perspective view of an advantageous embodiment of the sliding surface on a support element;

4a shows in a section of a damper part in a view in the axial direction of an embodiment with circumferentially circumferential sliding surface;

4b shows in a section of a damper part in a view in the axial direction of an embodiment with circumferentially spaced sliding surfaces;

5a to 5c show exemplary ways of forming the sliding surfaces.

The 1a and 1b illustrate in schematic highly simplified representation based on a functional sketch the basic structure and the basic function of a torsional vibration damper according to the invention 1 with split slip bowl 2 , The torsional vibration damper 1 includes at least one damper part 3 , For example, in the form of a single or multi-part primary part and a circumferentially relative to this limited rotatable Dämpferflanschteil 4 as a secondary part, which may also be formed in one or more parts. damper part 3 and damper flange part 4 Depending on their integration into a drive train, they can be used as input or output part of the torsional vibration damper 1 act and are here via a, energy storage devices in the form of spring means F1 comprehensive damper stage 5 coupled together. The damper part 3 forms a sliding shell 2 with the radially outer peripheral region of the spring devices F1 relative to the encompassing sliding surfaces 7.1 . 7.2 , The damper flange part 4 has circumferentially spaced, not shown here and the spring means F1 in the circumferential direction between receiving and acted upon Beaufschlagungsbereiche. The slip bowl 2 is inventively of at least two rotatably connected to each other and each sliding surfaces, here 7.1 and 7.2 , having Gleitschalenteilen 2.1 . 2.2 formed, with the sliding surfaces 7.1 . 7.2 the individual sliding shell parts 2.1 . 2.2 forming a circumferentially circumferential axial gap 8th are arranged spaced apart in the axial direction with respect to the course of the axis of rotation R. The damper flange part 4 engages at least in the axial gap 8th one.

The non-rotatable connection of Gleitschalenteile 2.1 . 2.2 takes place outside the sliding surfaces 7.1 . 7.2 carrying area. The formation of the connection can be non-positively, for example via a screw, positively, for example, via a riveted or cohesively, preferably non-positive or positive fastening means are used.

In contrast, shows 1b an advantageous embodiment of a torsional vibration damper 1 in the form of a parallel damper with split sliding shell 2 , The damper part 3 and damper flange part 4 are at least two offset in the radial direction to each other staggered damper stages 5 and 6 coupled together. These damper stages 5 . 6 may additionally be arranged in the axial direction to each other with offset. This means that at least for a portion of the entire operating range of the torsional vibration damper 1 the torque transmission over both damper stages 5 and 6 done together. The damper stages 5 and 6 can be performed in various ways. These can be through one or more damper assemblies be characterized, which in turn may be connected in series or in parallel.

In the 1b illustrated damper arrangements of the damper stages 5 and 6 are as mechanical damper arrangements 9 and 10 executed, comprising in each case spring means F1 and F2 as a means for torque transmission and / or damping coupling between the relatively limited circumferentially rotatable damper parts of the damper stages 5 and 6 , In the case shown in training of the torsional vibration damper 1 as a parallel damper relative to each other in the circumferential direction rotatable damper components of the damper assembly 9 from the damper part 3 and the damper flange 4 educated. This applies analogously to the damper arrangement 10 the second damper stage 6 , Between the damper components of the individual damper assemblies 9 and 10 the means for torque transmission and / or damping coupling in the form of the spring means F1 and F2 are arranged. The region of the damper flange part acting on the spring devices F2 4 is by the circumferentially closed circumferential axial gap 8th , formed by the spaced arrangement of the sliding surfaces 7.1 . 7.2 , passed through. The region extends in the radial direction over the arrangement region of the sliding surfaces 7.1 . 7.2 ,

The individual spring devices F1 and F2 in the embodiments of 1a and 1b can be formed by individual spring elements or arranged parallel to each other, in particular arranged one another spring elements.

According to a particularly advantageous embodiment, the spring means F1 of the damper stage 5 as bow springs and the spring means F2 of the damper stage 6 designed as compression springs, in particular short compression springs. These act, especially when designed as a short compression springs, in an angle range> 0 ° to 5 ° before reaching the Endverdrehwinkels the damper. Particularly advantageous are short springs that act in the range> 0 ° to 2 °. However, smaller working angles> 0 ° or larger working angles> 5 ° are also conceivable up to the total torsional angle of the damper.

The sliding surfaces 7.1 and 7.2 each viewed in axial section extend over a portion of the outer peripheral surfaces of the spring means F1 for the realization of the radial and / or axial support. In the case shown, the theoretically possible effective sliding surface area extends in axial section in the outer circumferential direction of the spring devices, as in FIG 2c in a view 2a shown, in an angular range of about 20 ° to 70 °, preferably 40 ° to 60 ° to the spring device F1. That is, based on a coordinate system applied to the longitudinal axis L of the spring device F1 (extending direction in the longitudinal direction of the spring device) whose X direction coincides with the axial direction and whose Y direction coincides with the direction perpendicular to the axial direction, the extension range is defined by an angle αA (FIG. Initial range) in the range of 20 ° to 40 °, starting from X up to an extension end angle αE of 65 ° to 70 °. The arrangement is preferably carried out such that both a support in the radial and axial directions is given. This is ensured by the fact that the single sliding surface 7.1 . 7.2 with respect to their orientation with respect to the center axis of the spring device is characterized by a directional component in the radial and axial directions.

The extent of the individual sliding surface 7.1 . 7.2 in the circumferential direction takes place over at least a portion of the extension of the spring device F1.

The 2a and 2 B illustrate a particularly advantageous embodiment of a torsional vibration damper 1 in a further development according to 1b comprising a damper part 3 and a damper flange 4 which are rotatable in the circumferential direction limited relative to each other, wherein at least two damper stages 5 and 6 are arranged between them. The damper stages 5 and 6 are also arranged offset to one another in the radial direction, wherein the radially inner damper stage 5 a mechanical damper assembly 9 includes while the radially outer damper stage 6 a mechanical damper assembly 10 and a hydraulic damper assembly 11 includes. In this case, the hydraulic damper arrangement acts 11 in the damper stage 6 at least over a portion of the Verdrehwinkelbereichs the first damper stage 5 parallel to this. The mechanical damper arrangement 10 the second damper stage 6 acts over a portion of the Verdrehwinkelbereichs the second damper stage in parallel with the hydraulic damper assembly. The mechanical damper arrangement 10 is arranged and designed such that it is effective only in a portion of the total operating range of the second damper stage, in particular the effective Verdrehwinkelbereichs, with this portion until reaching the stop position of the two damper parts, in particular damper part 3 and damper flange 4 the second damper stage 6 , extends.

The 2a and 2 B illustrate a particularly advantageous structural configuration of a design of the torsional vibration damper 1 in a basic configuration according to 1b , The 2a shows an axial gap in the axial section and 2 B a section perpendicular to the axis of rotation R in a view of the damper flange 4 , Recognizable are the two damper stages 5 and 6 , which are arranged in the radial direction in different diameter ranges.

The damper part 3 is designed in several parts and includes two side windows by way of example 12.1 and 12.2 and further two housing parts 13.1 and 13.2 that same slices 12.1 and 12.2 under formation of an interior 14 enclose. The damper flange part 4 comprises, for example, at least one or more disk-shaped elements, which with circumferentially extending formed and spaced-apart recesses 15 are executed, wherein each of these recesses in the circumferential direction facing each other two contact surfaces 16 and 17 forms, at which at least one end portion of the spring means F1 of the damper stage 5 come to the concern. The damper flange part 4 further comprises radially-facing protrusions 19 , in particular in the form of cams, between them and the damper part 3 the components of the damper assemblies 10 and 11 are arranged. The housing parts 13.1 . 13.2 form a liquid-tight interior 14 ,

The hydraulic damper assembly 11 comprises a floating damping ring, which one piece or not shown here, as in the 2 B reproduced, from a plurality of circumferentially spaced from each other and with the damper part 3 and the damper flange 4 cooperating ring segments 21 consists. This forms in each case with the damper part 3 first displacement chambers 22 and the damper flange 4 second displacement chambers 23 fluidly communicating with each other via openings 24 in the ring segment. The individual ring segments 21 are inside the damper part 3 , especially in the side windows 12.1 and 12.2 , rotatably mounted and both relative to the damper part 3 as well as the damper flange 4 limited rotatable guided. With none of the two torsional vibration damper parts, however, this is in positive connection. In detail, forms a single ring segment 21 with the damper part 3 at least one radially outer first displacement chamber 22 and with the damper flange 4 second displacement chambers 23 , The ring segment 21 has at its outer periphery at least two projections, which are the first displacement chamber 22 together with the inner circumferential surface on the damper part 3 limit. To form the second displacement chambers 23 has the single ring segment 21 in the circumferential direction facing projections which the cams 19 at least partially executed in the radial and axial directions to form a distance enclosing in the non-operating position. In particular, so-called bulges are provided which receive the cams arranged on the outer circumference of the damper flange or in which they are immersed. The individual displacement chambers - first displacement chamber 22 and second displacement chamber 23 - Are of different sizes. Preferably, to control the damping effect is a throttle point in the first displacement chamber 22 intended. This is preferably in two sub-chambers 22.1 and 22.2 divided. These sub-chambers are made by the floating damping ring and the damper part 3 , In particular a non-rotatably connected with this spacer and centering 25 formed, wherein between the spacer and centering element 25 and the outer circumference of the ring segment 21 , in particular the circumferential surface oriented in the radial direction, and / or the inner circumference of the housing or the housing parts and the spacer and centering element 25 at least a gap 26 , which forms a throttle point, is executed. This connects the two on both sides of the spacer and centering element 25 and the ring segment 21 trained displacement chambers 22.1 and 22.2 , In this case, a single radial gap between the spacer and centering element 25 and the connecting element in the radial direction or in each case at least one gap between the spacer and centering element 25 and housing inner wall and ring segment 21 be formed. The gap can in particular radially between the housing inner wall and the spacer and centering 25 and / or outer circumference of the ring segment 21 viewed in the circumferential direction between the circumferentially facing projections and the spacer and centering 25 be executed. At least one side surface of the column 26 can at least partially from the side windows 12.1 . 12.2 be formed.

The displacement of damping medium in the second displacement chambers 23 takes place through gaps between the damping ring, in particular the ring segments 21 and the projections of the damper flange 4 , The projections of the ring segment have corresponding abutment surfaces which bound the first displacement chambers in the circumferential direction. The subdivision into the two subchambers takes place essentially by the intermediate order of the so-called spacer and centering bushing. This is passed in the circumferential direction through the entire unit in the axis-parallel direction and fixed, for example by means of a fastening element on the damper part. In this case, a plurality of such spacers and centering bushes is provided over the circumference of the entire clutch away. These are preferably arranged at a uniform distance from each other in the circumferential direction and between the cams formed in the circumferential direction 19 at the damper flange 4 , The distance and centering device carries in the illustrated case far a cam, the component the damper part 3 is. This comprises a relative to the damper part fixed part, which may be integrally formed on the damper part, in particular housing, or as a separate element with this in entraining manner rotatably connected. Also coupled to this is a moving part 27 , Between the fixed part and the movable part is the spring device F2, which has the tendency to the two cam parts, fixed part and movable part, apart and an additional force in the end region of the mutual rotation of the two damper parts 3 . 4 applied.

In a simplified embodiment, the spacer and centering element 25 also in one piece, free of an integrated spring device F2 accordingly 1a be executed. The hydraulic damper assembly 11 with the floating damping ring acts analog.

To the ring segment 21 to be able to apply the cams 19 damper flange 4 through the axial gap 8th formed by the spaced-apart sliding surfaces 7.1 . 7.2 , guided.

The sliding surfaces 7.1 . 7.2 are here by separate at least mitnahmefest with the Gleitschalenteil 2.1 connected support elements 20.1 and 20.2 educated. Exemplary is the support element 20.1 in a perspective view in 3 shown. The single support element 20.1 . 20.2 is preferably made of sheet steel by deep drawing. This has a substantially U-shaped profile with a first leg 20.1.1 , a second leg 20.1.2 and a jetty 20.1.3 on. The thigh 20.1.2 is applied to the spring device F1 and serves for the at least partial radial and axial support of the energy storage device F1. The on the thigh 20.1.2 formed sliding surface 7.1 extends in the circumferential direction at least over a partial region of the extension of the spring device F1 in the unloaded state, preferably over the entire extension region of the spring device F1 in the circumferential direction. The individual support elements 20.1 . 20.2 are each spaced circumferentially on the damper part 3 arranged.

The 4a and 4b illustrate in schematic representation basic variants of the design of the sliding surfaces. According to 4a can the single sliding surface 7.1 on a sliding shell part 2.1 be completely circumferential in the circumferential direction and thus formed closed.

In contrast, shows 4b an education with segmented Gleitschalenteil based on a section of a Gleitschalenteil 2.1 , The single sliding surface 7.1 to 7.1 is in each case only extending over a partial area extending in the circumferential direction. It is a plurality of sliding surfaces 7.1 respectively. 7.2 spaced from one another in the circumferential direction.

The 5a to 5c show examples of possible basic training for sliding surfaces 7.1 on Gleitschalenteilen 2.1 on the basis of a section of an axial section. According to the 5a and 5b are the sliding surfaces 7.1 . 7.2 integral to the Gleitschalenteilen 2.1 educated. 5a shows a possible formation by shaping in the production of Gleitschalenteiles 2.1 For example, by deep drawing. The 5b shows a variant of the Gleitflächenbereitstellung over from the basic element of the sliding shell herausfiegbare by partial separation areas. The 5c shows an embodiment with a separate component 20.1 , which has connecting elements 29 or by form and / or adhesion to the Gleitschalenteil 2.1 connected is.

LIST OF REFERENCE NUMBERS

1

 torsional vibration dampers

2

 sliding

2.1, 2.2

 Gleitschalenteile

3

 damper part

4

 damper flange

5

 damper stage

6

 damper stage

7.1, 7.2

8th

 axial gap

9

 damper arrangement

10

 mechanical damper arrangement

11

 hydraulic damper assembly

12.1, 12.2

 side window

13.1, 13.2

 housing part

14

 inner space

15

 recess

16

 contact surface

17

 contact surface

18

 connection

19

 Projection, cam

20.1, 20.2

 support element

20.1.1; 20.1.2

 leg

20.1.3

 web

21

 ring segment

22

 displacement chamber

22.1, 22.2

 member chamber

23

 displacement chamber

23.1, 23.2

 member chamber

24.1, 24.2

 openings

25

 centering

26

 Gap, throttle point

27

 moving part

28

 spring cup

29

 connection

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102011015637 A1 [0002]

Claims (13)

Torsional vibration damper ( 1 ) with a damper part ( 3 ) and one against the action of energy storage devices relative to the damper part ( 3 ) within a torsional backlash limited rotatable damper flange part ( 4 ), wherein the damper part ( 3 ) a slip bowl ( 2 ) with the radially outer peripheral portion of the energy storage devices (F1) encompassing sliding surfaces ( 7.1 . 7.2 ) and the damper flange part ( 4 ) spaced circumferentially and the energy storage devices (F1) in the circumferential direction between them receiving and acted upon loading areas; characterized in that the sliding cup ( 2 ) of at least two at least indirectly rotatably connected to each other and one or more sliding surfaces ( 7.1 . 7.2 ) having Gleitschalenteilen ( 2.1 . 2.2 ) is formed, wherein the sliding surfaces ( 7.1 . 7.2 ) of the individual sliding shell parts ( 2.1 . 2.2 ) forming a completely circumferentially extending axial space ( 8th ) are arranged spaced apart in the axial direction, in which the damper flange part ( 4 ) engages or extends therethrough. Torsional vibration damper ( 1 ) according to claim 1, characterized in that a single sliding surface ( 7.1 . 7.2 ) on a single sliding shell part ( 2.1 . 2.2 ) as peripherally circumferentially closed sliding surface ( 7.1 ) is executed. Torsional vibration damper ( 1 ) according to claim 1, characterized in that a single sliding surface ( 7.1 . 7.2 ) on a single sliding shell part ( 2.1 . 2.2 ) than over a portion in the circumferential direction about the axis of rotation of the torsional vibration damper ( 1 ) extending extending surface and on a single sliding shell part ( 2.1 . 2.2 ) in the circumferential direction at least two such sliding surfaces ( 7.1 . 7.2 ) are arranged spaced from each other. Torsional vibration damper ( 1 ) according to claim 3, characterized in that the extension region of a single sliding surface ( 7.1 . 7.2 ) in the circumferential direction about the axis of rotation of the torsional vibration damper ( 1 considered) corresponds at least to the extension region of which is supported on this energy storage device (F1) in the circumferential direction. Torsional vibration damper ( 1 ) according to one of claims 1 to 4, characterized in that the individual sliding surface ( 7.1 . 7.2 ) on a sliding shell part ( 2.1 . 2.2 ) is formed in such a way, the energy storage device (F1) in the circumferential direction of the individual energy storage device (F1) in a plane through a circumferential direction of the torsional vibration damper (F1) 1 ) extending longitudinal axis of the individual energy storage device (F1) and a perpendicular considered to encompass in an angular range between 20 ° and 70 °, preferably 40 ° to 65 ° viewed from a parallel to the axis of rotation of the torsional vibration damper through the longitudinal axis of the energy storage device (F1) considered. Torsional vibration damper ( 1 ) according to one of claims 1 to 5, characterized in that on a single sliding shell part ( 2.1 . 2.2 ) provided sliding surfaces ( 7.1 . 7.2 ) form axial and / or radial support surfaces for the energy storage devices (F1). Torsional vibration damper ( 1 ) according to one of claims 1 to 6, characterized in that the individual sliding surface ( 7.1 . 7.2 ) integral to a sliding shell part ( 2.1 . 2.2 ) is trained. Torsional vibration damper ( 1 ) according to claim 7, characterized in that the sliding shell part ( 2.2 . 2.2 ) is designed as a sheet metal part and the sliding surfaces ( 7.1 . 7.2 ) are formed by at least one of the following methods: - embossing - forming - separating and subsequent forming Torsional vibration damper ( 1 ) according to one of claims 1 to 8, characterized in that the individual sliding surface ( 7.1 . 7.2 ) on a separate at least ratcheting with the Gleitschalenteil ( 2.1 . 2.2 ) connected component, in particular support element ( 20.1 . 20.2 ) is trained. Torsional vibration damper ( 1 ) according to claim 9, characterized in that the sliding shell ( 2 Segmented in the circumferential direction of at least two circumferentially spaced from each other, sliding surfaces ( 7.1 . 7.2 ) supporting support elements ( 20.1 . 20.2 ) is formed. Torsional vibration damper ( 1 ) according to claim 9 or 10, characterized in that the connection between the support element ( 20.1 . 20.2 ) and Gleitschalenteil ( 2.1 . 2.2 ) as a compound selected from the group of following compounds: - non-positive - positive - cohesive Torsional vibration damper ( 1 ) according to one of claims 1 to 11, comprising at least one of the damper part ( 3 ) formed primary part and a damper flange ( 4 ) performed secondary part, the relative to each other in the circumferential direction against the Effect of at least two mutually offset in the radial direction and energy storage units (F1, F2) having damper stages ( 5 . 6 ) are rotatable, wherein the damper part ( 3 ) spaced apart in the axial direction and at least indirectly rotatably connected side windows ( 12.1 . 12.2 ) and the secondary part at least one between the side windows ( 12.1 . 12.2 ) arranged center disc, characterized in that the individual sliding surfaces ( 7.1 . 7.2 ) on the damper part ( 3 ) of the radially inner damper stage ( 5 ) assigned. Torsional vibration damper ( 1 ) according to claim 12, characterized in that the radially outer damper stage ( 6 ) comprises a hydraulic damper arrangement with damping chambers, which are filled with a damping medium and each having at least one throttle opening, wherein the hydraulic damper stage via the damper flange ( 4 ) can be acted upon.

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