阅读说明：本技术 扭振减振器 (Torsional vibration damper ) 是由 M·克拉佩里希 H·蒙德 R·汉纳佩尔 于 2019-12-23 设计创作，主要内容包括：本发明涉及一种扭振减振器(1),其具有输入件(2)和输出件(3),所述输入件和输出件以能相对彼此扭转的方式布置,所述扭振减振器具有包括弹簧元件(5、6)的弹簧减振器装置(4),所述输入件(2)布置为能相对于所述输出件(3)抵抗所述弹簧减振器装置(4)的弹簧元件(5、6)的回位力扭转,所述弹簧减振器装置(4)具有腔(11),在该腔中布置有所述弹簧减振器元件,所述腔(11)由弹簧膜(14)盖上,所述输入件(2)相对于所述输出件(3)在径向方向上和/或在轴向方向上在其可移动性方面被至少一个止挡(15)限界。(The invention relates to a torsional vibration damper (1) having an input part (2) and an output part (3) which are arranged so as to be rotatable relative to one another, having a spring damper arrangement (4) comprising spring elements (5, 6), the input part (2) being arranged so as to be rotatable relative to the output part (3) against a restoring force of the spring elements (5, 6) of the spring damper arrangement (4), the spring damper arrangement (4) having a chamber (11) in which the spring damper elements are arranged, the chamber (11) being covered by a spring film (14), the input part (2) being delimited in relation to the output part (3) in terms of its displaceability in a radial direction and/or in an axial direction by at least one stop (15).)

1. A torsional vibration damper (1) having:

an input member (2); and

an output member (3) for outputting,

the input element and the output element are arranged in a manner that they can be twisted relative to one another;

a spring damper device (4) having spring elements (5, 6),

wherein the input part (2) is arranged so as to be rotatable relative to the output part (3) against a restoring force of a spring element (5, 6) of the spring damper device (4), wherein the spring damper device (4) has a cavity (11) in which the spring damper element is arranged, wherein the cavity (11) is covered by a spring membrane (14), characterized in that the input part (2) is delimited in relation to the output part (3) in a radial direction and/or in an axial direction with respect to the displaceability of the input part by at least one stop (15).

2. Torsional vibration damper (1) according to claim 1, characterized in that the spring membrane (14) is connected on the one hand to the output (3) and on the other hand bears against the input (2), or the spring membrane (14) is connected on the one hand to the input (2) and on the other hand bears against the output (3).

3. Torsional vibration damper (1) according to claim 2, characterized in that the spring membrane (14) is sealingly connected on the one hand to the output (3) and on the other hand sealingly bears against the input (2), or that the spring membrane (14) is sealingly connected on the one hand to the input (2) and on the other hand sealingly bears against the output (3).

4. Torsional vibration damper (1) according to one of the preceding claims, characterized in that an element connected to the output (3) is overlapped by an element connected to the input (2) in the radial and/or axial direction to serve as a stop (15) for the radial and/or axial movability of the output (3) relative to the input (2).

5. Torsional vibration damper (1) according to one of claims 1 to 4, characterized in that an element connected to the input part (2) is overlapped by an element connected to the output part (3) in the radial direction and/or in the axial direction in order to serve as a stop (15) for the radial and/or axial movability of the input part (2) relative to the output part (3).

6. The torsional vibration damper (1) according to any of claims 1 to 5, characterized in that the element connected with the input (2) and/or with the output (3) is a ring element and/or a disc, which extends substantially in a radial direction.

7. Torsional vibration damper (1) according to one of claims 1 to 6, characterized in that the element connected to the input (2) and/or to the output (3) is a centrifugal force pendulum device (8) and/or a flange element (9) of a centrifugal force pendulum device (8) and/or a pendulum mass (10) of a centrifugal force pendulum device (8).

8. Torsional vibration damper (1) according to one of the claims 1 to 7, characterized in that the ring element or the disc is riveted, crimped or welded with the input (2) or with the output (3).

9. The torsional vibration damper (1) as claimed in claim 6, 7 or 8, characterized in that the ring element or the disc (12, 13) is connected radially inside or radially outside with the input (2) or with the output (3).

10. Torsional vibration damper (1) according to any of the preceding claims, characterized in that the spring membrane (14) itself serves as a stop (15).

Technical Field

The invention relates to a torsional vibration damper, in particular for a drive train of a motor vehicle.

Background

Torsional vibration dampers are known in a variety of ways in the prior art, for example as dual mass flywheel or clutch dampers for the drive train of a motor vehicle. A torsional vibration damper usually has an input part and an output part, wherein, for example, a spring damper arrangement is provided in the torque flow between the input part and the output part, which spring damper arrangement transmits torque between the input part and the output part. The spring damper arrangement here damps torsional vibrations, for example, which originate from the drive motor on the input side, so that these torsional vibrations are only transmitted in a damped manner to the aggregate connected downstream of the output element.

Such torsional vibration dampers can also have further means for damping or damping torsional vibrations, for example centrifugal force pendulum devices or the like.

In particular, in the case of spring damper arrangements, a chamber is formed by the input part, which is optionally filled with a lubricant, which is sealed off from the output part by the spring film. For this purpose, the membrane lies sealingly against the input part and is connected sealingly to the output part. In the event of a rotation of the input part relative to the output part, the membrane optionally also serves as a friction damping device. Such a membrane can also be provided essentially without sealing tasks to serve as a friction damping device. For this purpose, the membranes are in each case pre-pressed in the axial direction against their contact surfaces.

During the assembly of such a torsional vibration damper or during the transport of such a torsional vibration damper, it can happen that the torsional vibration damper acts on the output part and is detached from the input part, which deforms the membrane. During the reassembly, the membrane naturally remains deformed and therefore no longer produces the axial pressure or abutment originally provided, so that the friction no longer has the desired degree. This impairs the overall torsional vibration damping, which can result in the torsional vibration damper becoming unusable overall.

Disclosure of Invention

The object of the invention is to provide a torsional vibration damper which protects the membrane better in order to avoid damage to the membrane.

The object of the invention is achieved by the features of claim 1.

One embodiment of the present invention relates to a torsional vibration damper having: an input member; and an output, the input and the output being arranged in a twistable manner relative to each other; a spring damper device having a spring element, wherein the input part is arranged so as to be rotatable relative to the output part against a restoring force of the spring element of the spring damper device, wherein the spring damper device has a chamber in which the spring damper element is arranged, wherein the chamber is covered by a spring film, wherein the input part is delimited relative to the output part in a radial direction and/or in an axial direction with respect to its displaceability by at least one stop. This limits the displaceability of the input part relative to the output part (or vice versa) in the radial direction and/or in the axial direction, so that no inadmissible deformation of the spring membrane occurs.

It is also advantageous if the spring film is connected to the output part on the one hand and rests against the input part on the other hand, or if the spring film is connected to the input part on the one hand and rests against the output part on the other hand. Thereby, the spring film can be used as a friction element. It can therefore also be advantageous for the spring film to rest against the input element or the output element with the friction body in the intermediate position.

It is also advantageous if the spring film is connected to the output element in a sealing manner on the one hand and bears against the input element in a sealing manner on the other hand, or if the spring film is connected to the input element in a sealing manner on the one hand and bears against the output element in a sealing manner on the other hand. Thereby, additionally or mainly a sealing function is achieved in order to seal the cavity. It is advantageous here for the cavity to be filled, for example, with a lubricant.

It is also advantageous if the element connected to the output is overlapped by an element connected to the input in the radial and/or axial direction in order to act as a stop for the radial and/or axial movability of the output relative to the input. The movability of the input part relative to the output part in the radial and/or axial direction is thereby limited in order to avoid damage to the spring membrane.

It is also advantageous if the element connected to the input part is overlapped by an element connected to the output part in the radial direction and/or in the axial direction in order to serve as a stop for the radial and/or axial movability of the input part relative to the output part. The movability of the input part relative to the output part in the radial and/or axial direction is thereby very effectively limited, in order to avoid damage to the spring membrane.

It is also advantageous if the element connected to the input and/or to the output is a ring element and/or a disk, which extends substantially in the radial direction. An advantageous component which has already been used and is present is thereby also used for the purpose of forming the stop, which contributes to saving additional components.

It is also advantageous if the element connected to the input and/or to the output is a centrifugal force pendulum device and/or a flange element of a centrifugal force pendulum device and/or a pendulum mass of a centrifugal force pendulum device. An advantageous component which has already been used and is present is thereby also used for the purpose of forming the stop, which contributes to saving additional components.

It is particularly advantageous if the ring element or the disk is riveted, crimped or welded to the input or to the output and in particular forms part of the input or output.

It is also advantageous if the ring element or the disk is connected to the input or to the output radially on the inside or radially on the outside.

In another embodiment, it is also practical that the spring membrane itself acts as a stop. Thereby, no additional components are required.

Drawings

The invention will be explained in more detail below with reference to preferred embodiments and with reference to the drawings.

Shown here are:

FIG. 1 is a schematic half-sectional view of an embodiment of a torsional vibration damper according to the present invention, an

Fig. 2 is a schematic half-section view of an alternative embodiment of a torsional vibration damper according to the present invention.

Detailed Description

Fig. 1 shows a torsional vibration damper 1 in half section, which can be embodied, for example, as a dual clutch damper, a dual mass flywheel, or the like. The torsional vibration damper 1 is designed so as to be able to twist about an axis x-x.

The torsional vibration damper 1 has an input part 2 and an output part 3. The input element 2 can be configured, for example, as a primary flywheel mass, and the output element 3 can be configured here as a secondary flywheel mass.

The input element 2 can be connected, for example, to a crankshaft of an internal combustion engine or the like, for example, can be screwed. For this purpose, the input part 2 has a screw connection opening 17 on the radial inside, through which a screw can be passed in order to be able to screw the input part 2 onto the crankshaft.

In the torsional vibration damper 1, the input part 2 and the output part 3 are arranged so as to be rotatable relative to one another.

A spring damper arrangement 4 is provided, which is provided with spring elements 5, 6. The spring elements 5, 6 are supported in the circumferential direction on the input part 2 and on a flange 7 connected to the output part 3, which is not visible in fig. 1. With the spring elements 5, 6 connected in between, a torque can be transmitted from the input element 2 to the output element 3. The input part 2 is arranged so as to be rotatable relative to the output part 3 against the restoring force of the spring elements 5, 6 of the spring damper arrangement 4.

Furthermore, a centrifugal force pendulum device 8 is optionally formed on the flange 7, so that the flange 7 of the spring damper device 4 is, for example, simultaneously formed as a flange element 9 of the centrifugal force pendulum device 8, on which a pendulum mass 10 is movably arranged.

The input part 2 forms a chamber 11, which can be assigned to the spring damper arrangement 4, since the spring elements 5, 6 are arranged in the chamber 11.

The chamber 11 is formed by the disks 12, 13 of the input element, the chamber also being covered laterally by a spring membrane 14.

In order to avoid possible damage to the spring membrane 14, the input part 2 is delimited in terms of its displaceability in the radial direction and/or in the axial direction relative to the output part 3 by at least one stop 15.

In this case, it can be seen in fig. 1 that the spring film 14 is fixedly connected to the output part 3 on the one hand, and that the spring film 14 bears against the input part 2 or the disk 13 on the other hand. Alternatively, the spring film 14 can be connected on the one hand also to the input part 2 and on the other hand rest against the output part 3. Thus, there can be a direct abutment, or (as shown in fig. 1) an abutment in the case of a friction ring 16 connected in between, etc.

It is also possible here for the spring film 14 to be connected to the output part 3 in a sealing manner on the one hand and to lie against the input part 2 in a sealing manner on the other hand. Alternatively, the spring membrane 14 can also be connected to the input part 2 in a sealing manner on the one hand and bear against the output part 3 in a sealing manner on the other hand.

Fig. 1 also shows that the element connected to the output part 3 (i.e. the pendulum mass 10) is overlapped by an element connected to the input part 2 (disk 13) in the radial and axial directions in order to act as a stop for the radial and axial movability of the output part 3 relative to the input part 2. In this case, it is also possible to provide only one radial or axial overlap to form a radial or axial stop. In this case, the pendulum mass 10 together with the friction ring 16 or together with the disk 13 forms a stop.

Alternatively, the element connected to the input part 2 can also be overlapped by an element connected to the output part 3 in the radial and/or axial direction in order to serve as a stop for the radial and/or axial movability of the input part 2 relative to the output part 3.

In this case, the element connected to the input part 2 and/or to the output part 3 (disk 13 or friction ring 16) is a ring element and/or a disk which extends substantially in the radial direction.

The elements connected to the input part 2 and/or to the output part 3 are also the centrifugal force pendulum device 8 and/or the flange element 9 of the centrifugal force pendulum device 8 and/or the pendulum mass 10 of the centrifugal force pendulum device 8.

Thus, a ring element or disc (e.g. disc 13) can be riveted, crimped or welded to the input 2 or alternatively to the output 3. In principle, the ring element or the disk is connected radially on the inside or radially on the outside to the input 2 or to the output 3.

Alternatively, the spring membrane 14 itself can also serve as a stop.

Fig. 2 shows a further alternative embodiment, in which the stop 15 is formed by the disk 13 overlapping the pendulum mass 10 in the axial and radial direction. The remaining features are substantially configured according to fig. 1, and reference is therefore made to this.

List of reference numerals

1 torsional vibration damper

2 input member

3 output member

4 spring shock absorber device

5 spring element

6 spring element

7 Flange

8 centrifugal force pendulum device

9 Flange element

10 pendulum mass

11 chamber

12 disks

13 disc

14 spring film

15 stop

16 friction ring

17 are screwed into the openings.