DE102018123742A1 - Centrifugal pendulum - Google Patents

Abstract

The invention relates to centrifugal pendulums (1) with a pendulum flange (2) rotatably arranged about an axis of rotation (d) and on this by means of self-aligning bearings (12) in the centrifugal force field of the pendulum flange (2) rotating about the axis of rotation (d) along a predetermined pendulum path, capable of oscillation Pendulum mass units (3) distributed around the circumference with pendulum masses (4) arranged on both sides over the circumference on the pendulum flange (2), the pendulum bearings (12) each consisting of raceways arranged radially one above the other in recesses (6) of the pendulum flange (2) received, axially opposite pendulum masses (4) connecting the middle part (5) of the pendulum mass units (3) and the pendulum flange (2) and a rolling element rolling on these raceways are formed. In order to manufacture the centrifugal force pendulum more easily and cost-effectively, the pendulum flange (2) has axially offset regions (7) at least over a partial circumference, and supports (10) of the pendulum mass units (3) with radial play that are dependent on the pendulum flange (2) are dependent on the pendulum path along the Division of the areas (7) between these and the pendulum masses (4) is provided.

Description

The invention relates to a centrifugal pendulum with a pendulum flange rotatably arranged about an axis of rotation and on this by means of self-aligning bearings in the centrifugal force field of the pendulum flange rotating about the axis of rotation along a predetermined pendulum path, oscillating pendulum mass units distributed over the circumference with pendulum masses arranged on the pendulum flange distributed over the circumference, wherein the self-aligning bearings are each formed between raceways arranged radially one above the other of a central part of the pendulum mass units and axially opposite pendulum masses which is received in recesses of the pendulum flange and the pendulum mass unit and a rolling element which rolls on these raceways.

A generic centrifugal pendulum is from the document DE 10 2016 222 247 A1 known.

The object of the invention is the development of a generic centrifugal pendulum. In particular, it is an object of the invention to produce a generic centrifugal pendulum easily and inexpensively and to provide the pendulum masses as identical parts for several variants.

The object is solved by the subject matter of claim 1. The claims dependent on this represent advantageous embodiments of the subject matter of claim 1.

The proposed centrifugal pendulum contains a pendulum flange arranged rotatably about an axis of rotation and on this by means of self-aligning bearings in the centrifugal force field of the pendulum flange rotating about the axis of rotation along a predetermined pendulum path, oscillating pendulum mass units arranged distributed over the circumference. The pendulum mass units are made up of pendulum masses, or thin cover plates, which are distributed over the circumference on both sides, and a central part, which optionally carries mass, connecting the pendulum bearings, each consisting of raceways between the central parts accommodated in a recess of the pendulum flange and the pendulum flange and one on each rolling elements rolling these raceways, for example a pendulum roller.

To stabilize the pendulum mass units against tilting, the pendulum flange has axially offset regions at least over a partial circumference. Between these areas and the pendulum masses, radially backlash-proof supports of the pendulum mass units with respect to the pendulum flange along the pendulum path are provided depending on the division of the regions to form the tilt protection. The inside of the pendulum masses and the areas are profiled in such a way that essentially the same radial play is maintained along the aerial tramway, so that if the centrifugal force is insufficient, the radial play is reduced and a noisy, gravity-related shift of the pendulum mass units to the radially inward direction is prevented.

For example, these areas can be formed by a pot that runs radially within the pendulum masses and, with one side of the pendulum masses, forms the supports that are subject to play radially over the entire pendulum path of the pendulum mass units.

Furthermore, in the case of impressions distributed over the circumference with the same division as the division of the recesses, the impressions can form the supports with the pendulum masses on one side.

In the case of impressions distributed over the circumference with different pitches compared to the division of the recesses, the supports can be provided in the case of impressions overlapping with the recesses in the circumferential direction between them and the pendulum masses arranged radially outside, and in the case of non-overlapping impressions the supports can be axially in line between the middle part and the Pendulum flange.

Against the background that in the case of pendulum flanges with function-related areas such as pots or embossments on the radially inner side of the recesses, as a result of which it is not possible to guide the middle parts or a rubber buffer accommodated thereon, profiling can be provided on the radially inner contour of the pendulum masses , which is complementary to a contour of the areas.

For example, in the case of centrifugal pendulums with circumferential pot on the inside of the recesses, the pendulum masses can be provided at least on the side of the pot for guiding and providing the tilt protection, depending on the pot depth, either alone or together with the central part or with a rubber buffer arranged thereon. In order to ensure guidance, if the pendulum mass units are jointly guided by means of the pendulum masses and the middle parts, the profiling of the pendulum masses is additionally adapted to the profiling of the middle parts or their rubber buffers in addition to the adaptation between pot and pendulum masses. In the case of guidance solely by means of the pendulum masses, the profiling of the pendulum masses is based on the profiling of the recesses or the axially spaced areas adapted. In the case of centrifugal pendulums with potting interrupted over the circumference or impressions which are provided with the same pitch as the recesses, the supports can be designed accordingly.

In the case of centrifugal pendulums with divisions that differ from the areas, the guide is alternately provided between the pendulum masses and the areas and, if there is no support option due to the division, between the central part or a rubber buffer arranged on the latter and the inner areas of the recesses. The same pendulum masses can be provided for several embodiments of the centrifugal pendulum regardless of the guidance.

• - Die Pendelmasseneinheiten können beispielsweise in einem Antriebsstrang eines Kraftfahrzeugs beispielsweise beim Abschalten der Brennkraftmaschine früh abgestützt werden, so dass ein störendes Abschaltklappern vermieden wird;
• - Die Pendelmassen sind aufgrund der engen Führung mittels eines an den Mittelteilen angeordneten Gummipuffers gegenüber den Ausnehmungen und/oder mittels einer Profilierung der Innenseiten der Pendelmassen gegenüber einer freigesparten Profilierung wie Gegenkontur der axial verlagerten Bereiche des Pendelflanschs auf eine vorgegebene Hüllkontur beschränkt;
• - Die Pendelmassen können trotz unterschiedlicher Topfungsteilung insbesondere für dieselbe Tilgerordnung gleich ausgeführt sein;
• - Trotz Topfungen und/oder Anprägungen am Pendelflansch kann ein Verkippschutz innerhalb der Ausnehmungen vorgesehen sein, so dass abhängig von der Teilung der Bereiche die an dem Mittelteil vorgesehenen Gummipuffer neben einer Anschlagdämpfung zudem als Führungselement dienen können.

The proposed tilt protection of the pendulum mass units with respect to the pendulum flange by means of the corresponding radial guide with play can achieve the following advantages in particular:

• The pendulum mass units can, for example, be supported early in a drive train of a motor vehicle, for example when the internal combustion engine is switched off, so that disruptive shut-off rattling is avoided;
• - The pendulum masses are limited to a given envelope contour due to the narrow guidance by means of a rubber buffer arranged on the middle parts relative to the recesses and / or by profiling the inside of the pendulum masses compared to a free profile such as the counter-contour of the axially displaced regions of the pendulum flange;
• - The pendulum masses can be made the same, in particular for the same damper order, despite different pot division;
• - Despite potting and / or impressions on the pendulum flange, tilt protection can be provided within the recesses, so that, depending on the division of the areas, the rubber buffers provided on the middle part can also serve as a guide element in addition to a stop damping.

• 1 ein Fliehkraftpendel in Ansicht,
• 2 den oberen Teil des Fliehkraftpendels der 1 im Schnitt entlang der Schnittlinie A-A,
• 3 den oberen Teil des Fliehkraftpendels der 1 im Schnitt entlang der Schnittlinie B-B,
• 4 eine Teilansicht des Fliehkraftpendels der 1,
• 5 eine Teilansicht des Fliehkraftpendels der 1,
• 6 eine Teilansicht des Fliehkraftpendels der 1 und
• 7 eine Teilansicht des Fliehkraftpendels der 1.

The invention is based on the 1 to 7 illustrated embodiment explained in more detail. These show:

• 1 a centrifugal pendulum in view,
• 2nd the upper part of the centrifugal pendulum 1 on average along the cutting line AA ,
• 3rd the upper part of the centrifugal pendulum 1 on average along the cutting line BB ,
• 4th a partial view of the centrifugal pendulum 1 ,
• 5 a partial view of the centrifugal pendulum 1 ,
• 6 a partial view of the centrifugal pendulum 1 and
• 7 a partial view of the centrifugal pendulum 1 .

The 1 shows the centrifugal pendulum 1 in view with that around the axis of rotation d arranged pendulum flange and the pendulum mass units distributed over the circumference 3rd , a part of which is only partially shown.

The pendulum mass units 3rd are distributed over the circumference and on both sides of the pendulum flange 2nd arranged pendulum masses 4th and that in the recesses 6 of the pendulum flange received middle parts 5 educated.

The pendulum flange 2nd has axially expanded areas 7 so that sole guidance and radial support of the pendulum mass units 3rd by means of the rubber buffers arranged axially in line on the middle parts 8th radially inwards and a tilt protection on the areas 7 not possible. To nevertheless depend on the division of the areas 7 To achieve radial support over the entire circumference are on the inside of the pendulum masses 4th Profilings 9 provided with the areas 7 the playful support 10th over the entire, from that between the middle parts and the pendulum flange 2nd trained self-aligning bearings 12th predefined aerial tramway. Outside the areas 7 the playful supports take place 11 between the radially inner sides of the recesses 6 of the pendulum flange 2nd and the rubber buffers 8th of the middle parts 5 .

The 2nd shows the upper part of the around the axis of rotation d arranged centrifugal pendulum 1 on average along the cutting line AA the 1 . The cut shows that as an expression 13 trained area 7 of the pendulum flange 2nd which with the pendulum mass 4th the pendulum mass unit 3rd the radially playful support 10th forms as a radial guide with insufficient centrifugal force and as a tilt protection of the pendulum mass unit 3rd opposite the pendulum flange 2nd serves.

The 3rd shows the upper part of the around the axis of rotation d arranged centrifugal pendulum 1 on average along the cutting line BB the 1 . Im between the areas 7 ( 1 ) Radial backlash-free support is provided in the free division area 11 between the rubber buffers 8th of the middle part 5 the pendulum mass unit 3rd and the lower part of the recess 6 of the pendulum flange 2nd .

The 4th shows a detail of the centrifugal pendulum 1 the 1 to 3rd with the pendulum mass 4th with the profiling 9 and the opposite embossing 13 in neutral position of the centrifugal pendulum 1 .

The 5 shows a detail of the centrifugal pendulum 1 the 1 to 4th with deflected pendulum mass 4th . The profiling 9 radially opposite counter-profiling 14 the stamping 13 is designed such that the entire pendulum of the pendulum mass unit 3rd the radially playful support 10th remains essentially the same.

The 6 shows a detail of the centrifugal pendulum 1 the 1 to 5 with the middle part 5 and the rubber buffer 8th of the middle part 5 opposite counter-profiling 15 the recess 6 of the pendulum flange 2nd in neutral position of the centrifugal pendulum 1 with the front pendulum mass removed.

The 7 shows a detail of the centrifugal pendulum 1 the 1 to 6 with deflected pendulum mass unit 3rd with the middle part 5 with the front pendulum mass removed. The rubber buffer 8th radially opposite counter-profiling 15 the recess 6 of the pendulum flange 2nd is designed such that the entire pendulum of the pendulum mass unit 3rd the radially playful support 11 opposite the rubber buffer 8th remains essentially the same.

Reference list

1

Centrifugal pendulum

2nd

Pendulum flange

3rd

Pendulum mass unit

4th

Pendulum mass

5

Middle section

6

Recess

7

Area

8th

Rubber buffer

9

Profiling

10th

Support

11

Support

12th

Self-aligning bearing

13

Embossing

14

Counter-profiling

15

Counter-profiling

A-A

Cutting line

B-B

Cutting line

d

Axis of rotation

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included 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.

Patent literature cited

• DE 102016222247 A1 [0002]

Claims (4)

Centrifugal pendulum (1) with a pendulum flange (2) rotatably arranged around an axis of rotation (d) and distributed over the circumference by means of self-aligning bearings (12) in the centrifugal force field of the pendulum flange (2) rotating about the axis of rotation (d) along a predetermined pendulum path arranged pendulum mass units (3) with pendulum masses (4) distributed over the circumference on both sides of the pendulum flange (2), the pendulum bearings (12) each consisting of axially between raceways arranged radially one above the other in a recess (6) of the pendulum flange (2) opposing pendulum masses (4) connecting the middle part (5) of the pendulum mass units (3) and the pendulum flange (2) and a rolling element rolling on these raceways, characterized in that the pendulum flange (2) axially offset regions (7) at least over a partial circumference has and radially playful supports (10) of the pendulum mass units (3) with respect to the pendulum flange (2) along the aerial tramway are provided depending on the division of the areas (7) between the pendulum masses and the areas (7). Centrifugal pendulum after Claim 1 , characterized in that a radially circumferential pot is provided on the pendulum flange, on which one side of the pendulum masses forms the supports. Centrifugal pendulum after Claim 1 , characterized in that in the case of impressions distributed over the circumference with the same division as the division of the recesses, the impressions form the supports with the pendulum masses on one side. Centrifugal pendulum after Claim 1 , characterized in that in the case of impressions (13) arranged distributed over the circumference with a different division than the division of the recesses (6), the supports (10) in the event of overlaps with the recesses (6) in the circumferential direction between these and the radial Pendulum masses (4) arranged outside take place and, in the case of non-overlapping impressions (13), the supports (11) take place axially in line between the middle part (5) and the pendulum flange (2).

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