阅读说明：本技术 扭矩传递装置 (Torque transmission device ) 是由 伊沃·阿格纳 奥德丽·利特 多米尼克·瓦格纳 于 2019-09-12 设计创作，主要内容包括：本发明涉及具有一个压紧装置(151；152)的一种扭矩传递装置(123),包含压紧体(154),用于在所述压紧体(154)和一个配对体(158)之间压紧摩擦元件(155、156),其中,所述压紧装置(151；152)对于在径向上穿过所述压紧装置(151；152)的质量重心的第一径向轴(141)而言具有第一惯性矩,并且对于在径向上垂直于所述第一径向轴(141)穿过所述压紧装置(151；152)的质量重心的第二径向轴(142)而言具有不同于第一惯性矩的第二惯性矩,以便形成所述压紧装置(151；152)各向异性的质量分布。为了在结构、生产技术和/或功能方面改进所述扭矩传递装置(123),至少一个与本质上具有各向同性质量分布的所述压紧体(154)刚性连接的零件(160)具有各向异性的质量分布,以便形成所述压紧装置(151；152)各向异性的质量分布。(The invention relates to a torque transmission device (123) having a pressing device (151; 152), comprising a pressing body (154) for pressing a friction element (155, 156) between the pressing body (154) and a counter-body (158), wherein the pressing device (151; 152) has a first moment of inertia for a first radial axis (141) passing radially through the center of mass of the pressing device (151; 152) and a second moment of inertia, different from the first moment of inertia, for a second radial axis (142) passing radially perpendicular to the first radial axis (141) through the center of mass of the pressing device (151; 152), in order to form an anisotropic mass distribution of the pressing device (151; 152). In order to improve the torque transmission device (123) with respect to structure, production technology and/or function, at least one component (160) which is rigidly connected to the pressure body (154) and has an essentially isotropic mass distribution has an anisotropic mass distribution in order to form an anisotropic mass distribution of the pressure device (151; 152).)

1. A torque transmission device (123) having a pressing device (151; 152), comprising a pressing body (2; 30; 153; 154) for pressing friction elements (155, 156) between the pressing body (2; 30; 153; 154) and a counter-body (158), wherein the pressing device (151; 152) has a first moment of inertia for a first radial axis (141) passing radially through the center of mass of the pressing device (151; 152) and a second moment of inertia, different from the first moment of inertia, for a second radial axis (142) passing radially perpendicularly to the first radial axis (141) through the center of mass of the pressing device (151; 152), in order to form an anisotropic mass distribution of the pressing device (151; 152), characterized in that at least one component (81-86; 160) rigidly connected to the pressing body (2; 30; 153; 154) having an essentially isotropic mass distribution has a first moment of inertia An anisotropic mass distribution in order to form an anisotropic mass distribution of the holding-down device (151; 152).

2. Torque transmitting device according to the general concept of claim 1, characterized in that exactly one of said parts (160; 81-86) rigidly connected to said pressure body (2; 30; 153; 154) having an essentially isotropic mass distribution has an anisotropic mass distribution in order to form an anisotropic mass distribution of said pressure device (151; 152).

3. Torque transmitting device according to one of the preceding claims, characterized in that said part (160; 81-86) rigidly connected to said compression body (2; 30; 153; 154) with an essentially isotropic mass distribution has an anisotropy of 10% to 25%.

4. Torque transmitting device according to one of the preceding claims, characterized in that said pressing means (151; 152) has an anisotropic mass distribution of less than ten percent.

5. Torque transmitting device according to one of the preceding claims, characterized in that said part (84-86; 160) rigidly connected to said pressure body (2; 30; 153; 154) also serves an additional function in said pressure device (151), in particular as a tie rod (16; 26; 146).

6. Torque transmitting device according to one of the preceding claims, characterized in that said part (84-86) rigidly connected to said pressure body (2; 30; 153; 154) is a connecting means (28) rigidly connecting said pressure body (2; 30; 153; 154) and at least one further functional part (16; 26; 66) of said pressure means (151; 152) together, wherein said connecting means (28) and/or said further functional part (16; 26; 66) have an anisotropic mass distribution.

7. Torque transmitting device according to one of the preceding claims, characterized in that said parts (81-83) rigidly connected to said compression body (2) are solely used for creating an anisotropic mass distribution of said compression means (151).

8. Torque transmitting device according to one of the preceding claims, characterized in that said part (160; 86) rigidly connected to said compression body (153; 154) has a radial mass reduction portion (51-54; 171; 173) and/or a mass increase portion (65) in order to create an anisotropic mass distribution of said compression means (151; 152).

9. Torque transmitting device according to one of the preceding claims, characterized in that the area of a single contact surface between said compression body (2; 30; 153; 154) and said at least one part (81-86; 160) is less than one thousand square millimetres.

10. The pressing device (151), the pressing body (2; 30; 153; 154), the friction element (155, 156), the counter body (158) and/or a component (81-86; 160) rigidly connected to the pressing body (2; 30; 153; 154), in particular a tie rod (26; 146), are used for the torque transmission device (123) of one of the preceding claims.

Technical Field

The invention relates to a torque transmission device having a pressing device, comprising a pressing body for pressing a friction element between the pressing body and a counter body, wherein the pressing device has a first moment of inertia for a first radial axis passing through the center of mass of the pressing device in the radial direction and a second moment of inertia for a second radial axis passing through the center of mass of the pressing device perpendicular to the first radial axis, which is different from the first moment of inertia, in order to form an anisotropic mass distribution of the pressing device.

Background

Known from german patent application DE 102015200109 a1 is a pressure plate for pressing a clutch disk of a friction clutch, having a friction plate body forming a friction surface for abutting against the clutch disk, wherein the friction plate body has a first moment of inertia for a first radial axis passing through the center of mass of the friction plate body in the radial direction and a second moment of inertia for a second radial axis passing through the center of mass of the friction plate body in the radial direction perpendicular to the first radial axis, wherein the first moment of inertia and the second moment of inertia are different. A clutch mechanism is known from german patent application DE 102015114278 a1, which comprises three components which are rotationally symmetrical about a rotational axis of the mechanism, wherein the components are each formed by a plate, a cover and a diaphragm spring which is mounted in an interposed manner between the plate and the cover, wherein at least one of the components has a discontinuity in its mass per unit area and/or its distribution of stiffness on at least one radial axis.

Disclosure of Invention

The object of the invention is to improve the pressing device according to the general concept of claim 1 in terms of structure, production technology and/or function.

A torque transmission device with a pressing device comprises a pressing body for pressing a friction element between the pressing body and a mating body, wherein the pressing device has a first moment of inertia for a first radial axis passing through a center of mass of the pressing device in a radial direction, and a second moment of inertia for a second radial axis passing through the center of mass of the compression device in a radial direction perpendicular to the first radial axis, which is different from the first moment of inertia, in order to create an anisotropic mass distribution of the pressing device, the object of the invention is achieved for such a torque transmission device, i.e. at least one of the parts rigidly connected to the compression body having an essentially isotropic mass distribution has an anisotropic mass distribution in order to form an anisotropic mass distribution of the compression device. The holding-down device comprises in particular only the holding-down body and the component. If necessary, the pressing device can also comprise various components fixedly connected with the pressing body. Preferably, the holding-down device comprises at least one part rigidly connected to the holding-down body with an essentially isotropic mass distribution, the part having an anisotropic mass distribution in order to form an anisotropic mass distribution of the holding-down device. For example, the pressure body can be a pressure plate of a friction clutch. For example, the friction element may be a clutch plate of a friction clutch. Of course, the pressure body can also be a sheet, for example a steel sheet of an oil-impregnated clutch. In this case, the friction element may be a friction plate of the wet clutch. Of course, the friction element can also be a brake disk of the brake. In this case, the pressing body and the mating body may be brake shoes of a brake. Preferably, the friction element is provided with a friction lining. Alternatively or additionally, the pressure body can also be provided with a friction lining. In contrast to the friction plate bodies known from german patent application DE 102015200109 a1, the pressure body of the claimed pressure device has essentially no anisotropic mass distribution. The advantage is that the functionality of the pressure body, in particular of the pressure plate, is not changed or influenced. Preferably, such a pressing device, including also the pressing body itself, is balanced. Preferably, the mass center of gravity of the pressing device after the balancing process is within a range of one rotation axis of the pressing device.

Alternatively to a torque transmission device according to the generic concept of claim 1, the object of the invention is achieved in that exactly one of the parts rigidly connected to the pressure body has an anisotropic mass distribution in order to form an anisotropic mass distribution of the pressure device. In this way, the production and assembly of the torque transmitting device can be simplified. The part is essentially of a rotationally symmetrical design. Preferably, the part has at least one torus. For example, the torus may be an open torus. For example, the open torus can be designed as a circlip or similar circlip, which is also referred to as a slotted ring or split ring. Of course, the torus can also be of closed design. For example, a closed torus may be a continuous circumferentially homogenous material. The torus can adopt an integral or split design. In this way, the torus can be composed of multiple parts in segments.

A preferred embodiment of the torque transmission device is characterized in that the component rigidly connected to the pressure body with an essentially isotropic mass distribution has an anisotropy of ten to twenty-five percent. It is particularly preferred that the part rigidly connected to the compression body with an essentially isotropic mass distribution has an anisotropy of from fifteen to seventeen percent. Within the framework of the invention, the moment of inertia of a component or an assembly is observed about a radial axis of rotation x or y in the center of mass of the component or assembly. The unit commonly used is kilograms by square millimeters. The axes of rotation x and y are perpendicular to each other and parallel to the friction surface of the pressing device forming a set of coordinate systems. The zero points of the x and y coordinates are located at the mass center of gravity of the part or assembly. In particular, what is meant here is not the axis of rotation of the pressing device, but a first radial axis or a second radial axis, about which the part or component rotates during operation of the pressing device and in a drive train equipped with a torque transmission device. Compaction bodies with an essentially isotropic mass distribution may have an anisotropy of up to about one percent due to manufacturing tolerances. Here, anisotropy is the percentage difference in inertia between each other on the x and y axes through the center of mass. The inertia of at least one element rigidly connected to the pressure body about the radial axes of rotation x and y corresponds in absolute terms to thirty percent to sixty percent of the inertia of the pressure body connected thereto. Now, if the part has an anisotropy of about fifteen to seventeen percent, a four to five percent anisotropy will be obtained for a torque-transmitting device, which may also be referred to as an assembly. With the preferred incorporation of additional measures, such as an eccentrically machined or smooth friction surface, such an anisotropy of four to five percent is sufficient to significantly reduce undesirable noise during operation of the torque transfer device. If it is desired that the anisotropy of the torque transfer device be up to ten percent and the inertia of the part about its x and y axes be substantially the same in absolute magnitude as the inertia of the compression body itself, then preferably an anisotropy of about ten to twenty-five percent should be achieved on the part. For example, the additional measures comprise at least one eccentric groove in a friction surface of the friction element. Such a friction element designed as a friction plate is known, for example, from the unpublished german patent application DE 102018100803. Alternatively or additionally, additional measures include the use of a soft damper in the radial direction.

A further preferred embodiment of the torque transmission device is characterized in that the mass distribution of the anisotropy of the pressure means is less than ten percent. In particular, the anisotropic mass distribution of the pressing device is between four and five percent. Near isotropic pressure plates may have an anisotropy of up to about one percent due to manufacturing tolerances. The anisotropy is here the percentage difference in inertia between the x or y axes through the center of mass, in particular the inertia of the two radial axes, relative to one another. The inertia of the attachment piece about the radial axes of rotation x and y corresponds in absolute magnitude to thirty to sixty percent of the inertia of the pressure plate connected thereto. Now, if the attachment has an anisotropy of about fifteen to seventeen percent, an anisotropy of four to five percent is obtained for the pressure plate + rivet joint + attachment as an assembly. In the case of the incorporation of additional measures, such as an eccentric machining or a smooth friction surface, an anisotropy of four to five percent is sufficient.

A further preferred embodiment of the torque transmission device is characterized in that the component rigidly connected to the pressure body has an additional function in the pressure device, in particular as a tension rod. That is, the part has a dual function. On the one hand, it is used to form an anisotropic mass distribution of the holding-down device. In addition, the component serves to transmit the contact pressure between the contact body and another component of the contact device or of the torque transmission device.

For example, the torque transmission of the pressure body, which is designed as a pressure plate, is effected by means of leaf springs. The leaf spring achieves the transmission of the torque while at the same time allowing an axial movement between the pressure body and the counter body, or a component connected to the counter body. For example, the component can be a synchronizer ring which is connected to a further component of the pressure device, for example a central plate of a dual clutch, so that a force-transmitting connection is formed. In the case of a component preferably designed as a pull rod, the component preferably serves to transmit an axial actuating force of an actuating device, for example with a lever spring, to the pressure body.

A further preferred embodiment of the torque transmission device is characterized in that the component rigidly connected to the pressure body is a connecting device which rigidly connects the pressure body to at least one further functional part of the pressure device, wherein the connecting device and/or the further functional part has an anisotropic mass distribution. For example, the part can be a synchronizing ring which completely surrounds the pressure body and is intended to form a force-transmitting connection with a further component, for example a central plate or a tie rod.

A further preferred embodiment of the torque transmission device is characterized in that the component rigidly connected to the pressure body is used only for forming an anisotropic mass distribution of the pressure device. In order to form an anisotropic mass distribution, the part rigidly connected to the compression body has a radial mass-reducing portion and/or a mass-increasing portion. The mass adding portion may be realized by a mass body, such as a mass protrusion, or by a rivet body, which forms a rigid connection with the part. The mass reduction may be achieved by holes or grooves or indentations in the part.

A further preferred embodiment of the torque transmission device is characterized in that the part rigidly connected to the pressure body has a radial mass-reducing portion and/or a mass-increasing portion in order to form an anisotropic mass distribution of the pressure device.

A further preferred embodiment of the torque transmission device is characterized in that the area of the individual contact surface between the pressure body and the at least one component is less than one thousand square millimeters. Preferably, in the event of heating of the pressure body during operation of the pressure device, this makes it possible to prevent heat transfer or to only reduce the amount of heat transfer between the pressure body and the component. For example, the respective contact surface is provided at a local elevation of the pressure body, by means of which the pressure body is in contact with a connecting element, which likewise can be used for connecting the leaf spring elements. For example, three contact surfaces are provided for forming a stable connection between the pressure body and the at least one component. Preferably, the sum of all contact surfaces is less than three thousand square millimetres.

A further preferred embodiment of the torque transmission device is characterized in that at least one component is preferably fastened to a fastening point of the pressure body for fastening a functional part of the pressure device. In this way, structural design and manufacturing costs can be reduced.

The invention further relates to a holding-down device, a holding-down body, a friction element, a counter-body and/or a component rigidly connected to the holding-down body, in particular a tie rod, for the aforementioned torque transmission device. The components may be traded separately.

Drawings

Further advantages, features and details of the invention are apparent from the following description of different embodiments with reference to the drawings. Brief description of the drawings:

FIG. 1 is a cross-sectional view of a torque transfer device with a compression device including a compression body for compressing a friction element between the compression body and a mating body;

FIG. 2 is an isolated top view of the compression body of FIG. 1;

FIG. 3 is a perspective view of the compression body of FIG. 2;

FIG. 4 is a perspective view of the compression body of FIG. 3 with a component rigidly secured thereto, referred to as a tension rod;

FIG. 5 is a top view of the compression body of FIG. 4 with the tension rod therein; drawing (A)

Fig. 6 to 13 are sectional views of a pressing body for illustrating different measures for the realization of an anisotropic mass distribution;

FIG. 14 is a perspective view of a compression body with tie rods and an additional feature for achieving anisotropic mass distribution;

FIG. 15 is a top view of the compression device of FIG. 14;

FIG. 16 is another perspective view of the compression device of FIG. 14;

FIG. 17 is a bottom view of the device of FIG. 14;

FIG. 18 is a compression body with a pull rod having an anisotropic mass distribution;

FIG. 19 is a perspective view of a portion of the compression device of FIG. 1;

FIG. 20 is a right side elevational view of the torque transmitting device of FIG. 1;

FIGS. 21 through 24 are different perspective views of the torque transmitting device of FIG. 1;

FIG. 25 is a simplified schematic illustration of another compression body of the torque transfer device of FIG. 1 having a member rigidly secured thereto to achieve an anisotropic mass distribution;

FIG. 26 is a top view of the compression body of FIG. 25 with features; and is

Figure 27 is a perspective view of the compression body of figures 25 and 26 with features.

Detailed Description

A powertrain system 120 with a torque transfer device 123 is illustrated in cross-section in fig. 1. The torque transfer device 123 is a clutch assembly including a dual clutch 124 located in a dual clutch transmission of the powertrain system 120. The dual clutch 124 comprises two clutches 122, 121, which are also referred to as partial clutches 121, 122. The clutch 121 is also referred to as the K1 clutch. The clutch 122 is also referred to as the K2 clutch.

In terms of drive, the torque transmission device 123 is connected via a coupling 170 to a drive unit, for example a crankshaft of an internal combustion engine, which is indicated in fig. 1 only by reference numeral 139. An output member is connected to a driven device via a torsional vibration damper 125.

The input part of the torque transmission device 123 is connected in a rotationally fixed manner to the center plate 127 via a clutch cover 126. The center plate 127 is rotatable about a rotational axis 138 by means of support bearings 128. In the axial direction, the center plate 127 is arranged between a pressure plate 129 of the clutch 121 and a pressure plate 130 of the clutch 122. The axial concept is directed to the axis of rotation 138 of the center plate 127. Axially means towards or parallel to said axis of rotation 138 of said central plate 127.

A clutch disk 131 of the clutch 121 may be clamped between the center plate 127 and the hold-down plate 129 for torque transmission. A clutch plate 132 may be captured between the center plate 127 and the hold-down plate 130 for torque transfer. The clutch disk 131 is connected in a rotationally fixed manner to a transmission input shaft, in which a hub 133 engages. The clutch disk 132 is connected in a rotationally fixed manner to a transmission input shaft designed as a hollow shaft, in which a hub 134 engages.

The dual clutch 124 is actuated by an actuating device 135. The actuating means 135 comprises two lever springs 143, 144. The pressure plate 130 is actuated by means of the lever spring 144, i.e. is displaced in the axial direction relative to the central plate 127. In terms of actuation, the lever spring 143 is connected to the pressure plate 129 via a tension rod 146. Between the two lever springs 143, 144, a lever spring seat 145 is arranged, on which the two lever springs 143, 144 are indirectly supported.

The central plate 127 of the dual clutch 124 is a counterpart 158 of the two pressure devices 151, 152. In the pressing device 151, the pressing plate 129 forms a pressing body 153. The clutch disk 131 forms a friction element 155 in the pressing device 151. The pressure plate 130 forms a pressure body 154 in the pressure device 152. The clutch disk 132 forms a friction element 156 in the hold-down device 152.

For clutches and multi-clutches, high frequency noise may be caused during coasting, which is also referred to as squeaking or squeaking. In the process, the inclined end of the pressing plate is connected with the radial end of the gearbox shaft. Through this connection, vibrations are induced and high frequency noise is ultimately caused.

As shown in fig. 2 to 4, 14 to 20 and 26, 27, the pressing device 151 of the torque transmitting device 123; 152 have different moments of inertia, which pass through the first radial axis 141 and the second radial axis 142, which is designed as a tilting axis perpendicular to said first radial axis 141. Preferably, the different moments of inertia through the two radial axes 141, 142 are not achieved by the different moments of inertia of the pressure bodies 153, 154, but by means of a part 160 arranged outside the pressure bodies 153, 154 and temperature-insulated therefrom; 81; 82; 83; 84; 85 parts by weight; 86, respectively. The pressure bodies 153, 154 have, viewed axially, an almost identical mass distribution over their entire circumference.

In fig. 2 and 3, the pressure body 153 is shown separately in different views. The compression body 153 essentially has the shape of a torus. Radially on the outside, the pressure body 153 has a total of six connection regions 8, 9 for rigidly fixing the tie rod (146 in fig. 1). The connecting region 8 serves only for the rigid connection of the tie rod.

The connecting region 9 serves, on the one hand, for rigidly connecting the tie rod. On the other hand, the connection region 9 serves for fixing the flat spring 1. The leaf spring 1 serves to connect the pressure body 153 to a counterpart (158 in fig. 1) of the dual clutch in a rotationally fixed manner. In the case of clutch actuation, the leaf spring 1 can effect an axial movement of the pressure body 153 relative to the counter body 158.

Fig. 3 shows that one end of the leaf spring 1 is fastened to the pressure body 153 in the connecting region 9 by means of a rivet element 3. The rivet element 3 forms an additional mass by means of which the mass distribution of the holding-down device (151 in fig. 1) can be influenced in a targeted manner. The riveting element 3 is arranged on the second radial axis 142. That is to say, the riveting element 3 has a dual function. On the one hand, it serves to fix the leaf spring 1 to the pressure body 153. In addition, the mass distribution of the holding-down device (151 in fig. 1) can be set in a targeted manner by means of a plurality of said rivet elements 3.

Fig. 4 and 5 show how the tie rod 146 is rigidly connected by means of the rivet elements 4, 5 and the pressure body 153. The rivet elements 4, 5 likewise have a double function. On the one hand, they serve to rigidly connect the tie rod 146 and the compression body 153. In addition, the rivet elements 4, 5 form additional masses, by means of which the mass distribution of the holding-down device (151 in fig. 1) can be adjusted in a targeted manner.

In fig. 6 to 9, four different embodiments of the pressure body 2 are shown in simplified form in cross section. In fig. 6 to 9, the pressure body 2 has a friction surface 7. During operation of the pressure body 2, if the associated clutch is actuated, the friction surface 7 comes into contact with a friction element (155 in fig. 1). The frictional heat generated in the process should be transmitted as little as possible to the part 81 rigidly connected to the pressure body 2; 82, or such heat transfer should be minimized.

In fig. 6, the part 81 is designed as an additional part 11, which is fastened to the pressure body 2 by means of a rivet element 10. The additional part 11 may be of a one-piece or two-piece design. By means of the additional part 11, the mass distribution of the pressure body 2 can be adjusted in a targeted manner. For this purpose, the additional part 11 can be designed as a closed torus.

In the closed ring, holes can be provided at suitable locations in order to change the mass distribution of the pressure body 2. In addition, mass projections can be provided on the additional part 11 in order to change the mass distribution of the pressure body 2. The additional part 11 is used only to change the mass distribution of the pressure body 2. Radially on the outside, a leaf spring 13 is fastened to the pressure body 2 by means of a rivet element 12.

Fig. 7 shows that the tension rod 16 is fastened to the pressure body 2 radially on the outside by means of a rivet element 15. In the case of a simultaneous observation of fig. 6 and 7, it can be concluded that the additional part 11 is designed as a closed torus. The additional part 11 may have essentially the shape of a ring washer with a through hole for fixing the riveting element 10.

As can be seen in fig. 8 and 9, the means 82 for adjusting the mass distribution of the pressure body 2 can likewise be designed as an additional component 18. The attachment part 18 is fixed to the radially outer pressure body 2 by means of the rivet elements 12, 15. As shown in fig. 8, the rivet element 12 serves to fix the leaf spring 13 to the pressure body 2. As shown in fig. 9, the rivet element 15 serves to fix the tie rod 16 to the pressure body 2.

The advantage of the part 82 in fig. 8 and 9 is that the already existing connection region of the pressure body 2 can be used for rigidly connecting the attachment part 18 to the pressure body 2. As shown in fig. 8, the additional part 18 extends radially inward on the side of the pressure body 2 facing away from the friction surface 7. In this way, a joint can be formed in the radial direction between the additional part 18 and the friction surface 7 of the pressure body 2.

Fig. 10 and 11 show that a similar additional part 20 for forming the part 83 can likewise be rigidly connected to the pressure body 2 without radially overlapping the friction surface 7 of the pressure body 2. The part 83 or the additional part 20 can have regions of different thickness on its periphery in order to influence the mass distribution of the holding-down device (151 in fig. 1) in a targeted manner.

In fig. 12 and 13, said part 84 is an additional part 24, which has a double function. The additional part 24 is fastened to the pressure body 2 on the side facing away from the friction surface 7 by means of a rivet element 22. Radially on the outside, the flat spring 13 is fixed to the additional part 24 by means of the rivet element 12. The flat spring 13 serves to form a rotationally fixed connection to a counterpart (158 in fig. 1). In addition, the tie rod 16 is fixed to the radially outer additional part 24. The tie rod 16 is rigidly connected to the accessory part 24 by means of the rivet element 15.

Fig. 14 to 17 show a pressure body 30 with an essentially isotropic mass distribution. On the pressure body 30, the tie rod 26 is fastened by means of a connecting device 28, in particular an intermediate piece 28, which together with the connecting device 28 forms the part 85. Preferably, the tie rods 26 have an essentially anisotropic mass distribution. The intermediate part 28 is fixed to the pressure body 30 by means of a rivet element 31. As an alternative or in addition to the tie rod 26, the intermediate piece 28 may have an anisotropic mass distribution.

The intermediate piece 28 has a mass projection 32 projecting radially inwardly, forming a mass increasing portion. By means of the mass projection 32, the mass distribution in the holding-down device (151 in fig. 1) can be adjusted as desired. For this purpose, the mass projection 32 can also be arranged differently from fig. 14 to 17. In addition, the mass projections 32 may have different thicknesses in order to form the desired mass distribution.

Fig. 18 and 19 show a particularly preferred embodiment, which makes it possible to vary or adjust the mass distribution of the pressing device (151 in fig. 1) particularly effectively. The pressure body 153 is rigidly connected to the tie rod 146 via a foot part 41 arranged radially on the outside. In fig. 19 and 20, rivet elements, which are not labeled in detail, are used to form the rigid connection.

In order to influence the mass distribution of the holding-down device 151, additional masses 42 to 44 projecting radially inward are formed on the tie rod 146. In the region of the second radial axis 142, a total of six additional masses can be arranged. In addition, additional masses 45, 56 are formed on the tie rod 146. The additional masses 42 to 46 can be realized on the tie rod 146 with low construction and production costs.

In addition, the tie rod 146 has a plurality of holes 51 to 54 in a peripheral portion facing away from the pressing body 153. By the targeted formation of the holes 51 to 54 with reduced mass, the mass distribution of the holding-down device 151 can be effectively changed or adjusted as an alternative to the additional masses 42 to 46 or in addition to the additional masses 42 to 46.

In fig. 21 to 24, different perspective views of the holding-down device 151 are shown in the assembled state in order to illustrate the influencing measures of the mass distribution. The additional masses 42 to 46 serve to achieve a targeted mass increase about the radial axis 141. The bores 51 to 54 are used for a targeted mass reduction about the radial axis 142.

Fig. 25 to 27 show an exemplary embodiment which makes it possible to effectively influence or adjust the mass distribution of the pressure body 154 in the pressure device (152 in fig. 1). The element 86 for adjusting or influencing the mass distribution of the holding-down device is the additional component 64. The additional part 64 is rigidly connected to the pressure body 154 by means of the rivet element 65. Here too, the contact surface between the additional part and the pressure body is reduced, so that the heat transfer is reduced.

From a simultaneous observation of fig. 25 to 27, it can be seen that with the attachment part 64, the mass distribution of the holding-down device can be adjusted or changed in a simple manner on the attachment part 64 by means of a targeted mass increasing portion on one axis and/or a mass decreasing portion 171 to 173 on the other axis. Anisotropy is achieved due to the imbalance of inertial masses formed by two mutually orthogonally arranged axes. In this process, the additional part 64 has a double function. On the radially outer side of the attachment part 64, a leaf spring element 66 is provided. The flat spring element 66 is fixed to the attachment part 64 by means of a rivet element 67. By means of the flat spring element 66, the pressure body 154 is connected to a counter body (158 in fig. 1) in a rotationally fixed but axially displaceable manner.

List of reference numerals

1 sheet spring

2 pressing body

3 riveting element

4 riveting element

5 riveting element

7 friction surface

8 connecting region

9 connection region

10 rivet element

11 additional component

12 riveting element

13 leaf spring

15 riveting element

16 draw bar

18 additional component

20 additional parts

22 riveting element

24 additional component

26 draw bar

28 connecting device, in particular intermediate piece

30 compression body

31 riveting element

32 mass increasing part, especially mass lug

41 foot portion

42 additional mass

43 additional mass

44 additional mass

45 attachment parts

46 attachment member

51 mass reduction part, especially hole

52 mass reduction part, especially hole

53 mass reduction part, especially hole

54 mass reduction parts, especially holes

64 Accessory component

65 riveting element

66 leaf spring element

67 riveting element

81 parts

82 parts

83 parts (C)

84 parts

85 details of

86 parts

120 power assembly system

121 clutch

122 clutch

123 torque transmitting device

124 double clutch

125 torsional vibration damper

126 clutch cover

127 center plate

128 support bearing

129 hold-down plate

130 pressing plate

131 clutch friction plate

132 Clutch friction plate

133 axle hub

134 axle hub

135 actuating device

138 rotating shaft

139 internal combustion engine

141 first radial axis

142 second radial axis

143 lever type spring

144 lever type spring

145 lever type spring seat

146 draw bar

151 hold-down device

152 hold-down device

153 pressing body

154 compression body

155 friction element

156 frictional element

158 counterpart

160 parts

170 are engaged with

171 mass reduction fraction

172 mass reduction fraction

173 mass reduction portion