WO2015192841A1 - Centrifugal pendulum - Google Patents

Centrifugal pendulum Download PDF

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Publication number
WO2015192841A1
WO2015192841A1 PCT/DE2015/200343 DE2015200343W WO2015192841A1 WO 2015192841 A1 WO2015192841 A1 WO 2015192841A1 DE 2015200343 W DE2015200343 W DE 2015200343W WO 2015192841 A1 WO2015192841 A1 WO 2015192841A1
Authority
WO
WIPO (PCT)
Prior art keywords
pendulum
centrifugal
flange
liquid
further
Prior art date
Application number
PCT/DE2015/200343
Other languages
German (de)
French (fr)
Inventor
Stephan Maienschein
Original Assignee
Schaeffler Technologies AG & Co. KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE102014211860 priority Critical
Priority to DE102014211860.3 priority
Application filed by Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2015192841A1 publication Critical patent/WO2015192841A1/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
    • F16F15/1407Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
    • F16F15/145Masses mounted with play with respect to driving means thus enabling free movement over a limited range
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00Purpose; Design features
    • F16F2230/04Lubrication

Abstract

A centrifugal pendulum (100) comprises a pendulum flange (110) mounted in such a way as to be rotatable about an axis of rotation (105), and a pendulum mass (115) mounted in a radially outer zone of the pendulum flange (110) is such a way as to be movable within the plane of rotation. A liquid feeder (140) is mounted in a radially inner zone of the pendulum flange (110). According to the invention, the pendulum flange (110) is designed to redirect liquid discharged from the feeder (140) in the radial or axial direction.

Description

 centrifugal pendulum

The invention relates to a centrifugal pendulum. In particular, the invention relates to a centrifugal pendulum, which is arranged in an environment of a liquid lubricant.

A centrifugal pendulum comprises a pendulum flange and a pendulum mass. The pendulum flange is rotatably mounted about an axis of rotation and usually torque-connected to an element which transmits torque in a drive train. The pendulum mass is slidably mounted in the plane of rotation on the pendulum flange, wherein a displacement in the circumferential direction is associated with a change in the distance of the center of mass of the pendulum mass from the axis of rotation. As a result, the centrifugal pendulum acts like a short-term energy storage to eliminate rotational irregularities of the pendulum flange around the axis of rotation. The centrifugal pendulum can be used in particular in a drive train on board a motor vehicle. Often the centrifugal pendulum is part of a device for transmitting torque, wherein the device comprises other elements, such as a friction clutch, a spring damper or a dual mass flywheel. Both the centrifugal pendulum and one of the other elements may have parts which are mounted to move against each other. These parts can be lubricated and / or cooled by means of a lubricant, wherein the lubricant can be accommodated in the region of the device for transmitting torque.

In one embodiment, a lubrication system is provided that conveys the lubricant through a system of channels by means of a pump or other active device. In particular, in a compact structure for the transmission of torque, which includes other elements besides the centrifugal pendulum, the flow of cooling or lubricating fluid through the centrifugal pendulum, in particular the pendulum, may be hindered. An element of the The direction can be insufficiently cooled or lubrication of one of the elements can be undersized.

It is an object of the present invention to provide an improved centrifugal pendulum for use in conjunction with a fluid circulation system. The invention solves this problem by means of a centrifugal pendulum and a device for transmitting torque with the features of the independent claims. Subclaims give preferred embodiments again. A centrifugal pendulum comprises a pendulum flange, which is rotatably mounted about a rotation axis, and a pendulum mass, which is slidably mounted in a radially outer region of the pendulum flange in the plane of rotation. In a radially inner region of the pendulum flange, a liquid supply is attached. In this case, the pendulum flange is adapted to forward liquid emerging from the supply in the radial or axial direction.

Due to the geometric design of the pendulum flange for the purpose of conducting the liquid, an element in the region of the centrifugal pendulum that must be forced cooled or forcibly lubricated, for example, a friction clutch, a pendulum, a damper or a spring damper, be supplied in an improved manner with liquid from the feed , The liquid may in particular comprise an oil or another liquid lubricant. In particular, in conjunction with a hydraulic element which can be actuated by means of the liquid, the present invention is advantageously used.

In one embodiment, the liquid is passed in the direction of the pendulum mass. The pendulum mass can be flowed around so improved the liquid to exert a cooling or lubricating effect. The liquid can also be forwarded in the direction of a further element in the region of the centrifugal pendulum, whereby in particular a compact or integrated construction of a device for transmitting torque is possible.

In one embodiment, the pendulum flange abuts axially on a further element and has a bead, wherein the bead together with the further element a forms radial channel. A known, planar pendulum flange can be easily formed by providing the bead to form the radial channel to forward the liquid in the radial direction. As a result, in particular the pendulum mass improved can be supplied with liquid. The bead can be introduced into the pendulum flange in a simple, rapid and cost-effective manner.

In a particularly preferred embodiment, the centrifugal pendulum comprises a hub to which the pendulum flange is attached, with a portion of the hub covering the bead. As a result, both a load-resistant as well as efficient training of the radial channel can be realized on the centrifugal pendulum.

In a further preferred embodiment, the pendulum flange is axially exposed at its radially inner boundary and the flared area is located in the exit area of the feeder to receive liquid leaking from the feeder. Thus, the liquid can be easily collected and directed to forward in the axial or radial direction. Compared to a known pendulum flange only minor changes may be required so that the centrifugal pendulum can be provided with little manufacturing effort. In yet another embodiment, the centrifugal pendulum comprises a hub to which the pendulum flange is attached, the hub comprising an axial recess for the passage of passed-on fluid. Particularly with an axial arrangement of a plurality of elements in a device for transmitting torque, elements other than the centrifugal pendulum can be supplied with liquid in an improved manner.

In yet another embodiment, the pendulum flange may include an axial recess for passage of passed-on fluid. The centrifugal pendulum may comprise a hub to which the pendulum flange is attached, the feed comprising a coaxial recess and a radial aperture in the hub. The exit of the supply can thus be stopped with respect to the pendulum, so that the exiting liquid can be passed in an improved manner by an element on the pendulum. In another embodiment, the centrifugal pendulum against the feed is rotatably mounted. In this case, the supply can be simple and the centrifugal pendulum can be adapted to redirect at one or more points on a circumference about the axis of rotation liquid emerging from the feed.

The centrifugal pendulum can comprise a further pendulum flange, wherein the pendulum mass is mounted axially between the two pendulum flanges. In particular, in this embodiment, a radially inner end portion of one of the pendulum flanges can be formed in an improved manner, to redirect or forward liquid emerging from the feed.

The pendulum flange may abut axially on another element of the centrifugal pendulum, the pendulum flange extending further radially inwardly than the further element and the radially inner portion of the pendulum flange being in the exit region of the supply for receiving liquid exiting the supply. This embodiment can be particularly simple to construct, so that the above-described, improved effect of forwarding the liquid can be realized simply and inexpensively.

A means for transmitting torque comprises the centrifugal pendulum as described above and optionally at least one of a friction clutch, a pendulum, a damper, a spring damper and a dual mass flywheel. Other elements may also be included. The elements can be designed to save space or highly integrated with the centrifugal pendulum, wherein the cooling or lubricating effect of the liquid can be provided to elements of the device.

The invention will now be described in more detail with reference to the attached figures. Showing:

Figure 1 is a centrifugal pendulum and

FIGS. 2 to 4 show further embodiments of a pendulum flange on the centrifugal pendulum of FIG. 1. Figure 1 shows a centrifugal pendulum 100, which may be part of a device for transmitting torque in particular. The centrifugal force pendulum 100 and optionally further elements of the device for transmitting torque are rotatably mounted about a rotation axis 105. In this case, the centrifugal pendulum 100 comprises at least one pendulum flange 1 10 and a pendulum mass 1 15. In the illustrated embodiment, a second pendulum 120 is still provided, the pendulum mass 1 15 is mounted axially between the pendulum flanges 1 10 and 120. The pendulum mass 1 15 is slidably mounted in a plane of rotation about the axis of rotation 105 by means of a pendulum roller 125. In the present embodiment, the pendulum mass 1 15 comprises a plurality of axially arranged sheets, although other embodiments are possible. In particular, the pendulum mass 15 can also be mounted displaceably only on a pendulum flange 1 10. In this case, portions of the pendulum mass 15 can be provided on different axial sides of the pendulum flange 110.

In the illustrated exemplary embodiment, the centrifugal pendulum 100 further includes a hub 130 to which the pendulum flange 1 10 and in the present case also the further pendulum 120 is connected torque-locking. The hub 130 is partially axially on the pendulum flange 1 10, wherein instead of the hub 130 and another element of the centrifugal pendulum pendulum pendulum pendulum 1 100 100 can rest axially. For connection, a rivet 135 is provided in the illustrated embodiment. While the pendulum mass 1 15 is located in a radially outer region of the pendulum 1 1, in particular radially outside the attachment point with the rivet 135, a supply 140 is provided for liquid in a radially inner region, in particular radially within the attachment point with the rivet 135. The liquid may in particular comprise a lubricant, for example oil.

Preferably, the feed 140 is part of a cooling or lubricating system that includes a pumping device.

The pendulum flange 1 10 is geometrically designed such that liquid exiting from the feeder 140, in the radial or axial direction is forwarded. As a result, the liquid can be conveyed to predetermined points on the centrifugal pendulum 100 or an adjacent element on the means for transmitting torque. be directed. In the illustrated embodiment, the hub 130 has an axial recess 145 for allowing fluid exiting the feed 140 to pass axially toward another member of the torque transmitting device.

Regardless of the presence and shape of the recess 130, the pendulum flange 1 10 preferably has a bead 150 which extends in the radial direction. The bead 150 is covered in one embodiment in the axial direction by a portion of the hub 130; In another embodiment, however, the bead 150 can also be covered by another element, in particular by the further pendulum flange 120, or remain uncovered. The bead forms a channel for the passage of radial fluid, in particular in the direction of the pendulum mass 1 15 or the shuttle roller 125. Wear, noise emission or heating in this area can be reduced by the targeted radially outwardly promoted liquid.

In the embodiment shown, the pendulum flange 1 10 extends radially inwardly further than the component to which the pendulum flange 1 10 axially abuts, in this case a portion of the hub 130. In this case, the pendulum flange 1 10 preferably extends radially straight and is not cranked , Between the innermost portion of the pivoting flange 110 and an axially adjacent element, in the present case a further section of the hub 130, a kind of pocket is formed in which liquid emerging from the feed 140 can collect. Favored by the centrifugal force of the centrifugal force pendulum 100 rotating around the rotation axis 105, the liquid from the pocket is conveyed through the radial channel, which is formed here mainly by the bead 150 explained above. In other embodiments, a radial channel may also be formed in other ways, for example by a corresponding recess in a portion of the hub 130. An axial channel may also be fed by liquid from the pocket.

FIG. 2 shows a further embodiment of a pendulum flange 110 on the centrifugal pendulum 100 of FIG. 1. Here, the pendulum flange 1 10 is axially cranked or axially exposed in the region of a radially inner boundary, so that a flared area 205 in the region of the feed 140 (not shown). Out of feeder 140 In this way, the liquid which forms can thus be collected in an improved manner between the exposed region 205 and an element abutting axially on the pendulum flange 11, in this case a section of the hub 130, and be transported further from there. In the illustrated embodiment, the transport of the liquid takes place only via the axial recess 145 in the hub 130, in other embodiments, the further transport can also take place in other ways, in particular also in other directions.

FIG. 3 shows yet another embodiment of the pendulum flange 110 on the basis of the embodiment of FIG. 2. Here, the feed 140 comprises a coaxial recess 305 in the hub 130 and a radial recess 310. Fresh liquid is introduced into the recess by the above-mentioned system 305 promoted and can escape from there through the radial recess 310. In the present embodiment, the exposed portion 205 is in the discharge direction, so that the liquid can be jammed or redirected through the exposed portion 205. The issued area 205 forms under the influence of centrifugal force, so to speak, a fluid pocket.

FIG. 4 shows yet another embodiment of the pendulum flange 110 on a centrifugal pendulum 100. Differing from the embodiments described above, here the second pendulum flange 120 is attached to the hub 130 by means of the rivet 135 and the first pendulum flange 10 is attached to the second by means of a further rivet 405 Pendulum 120. At its radially inner boundary or generally in a radially inner region of the pendulum flange 1 10 is axially exposed, so that between the issued area 205 and an axially adjacent element, in this case the further pendulum 120, liquid can accumulate, from the supply 140 (not shown) exits. In the pendulum 120 an axial recess or an axial opening 410 is provided to discharge the accumulated liquid in the axial direction. The embodiments illustrated in the various FIGS. 1 to 4 can be combined with one another. In this case, the pendulum flange 1 10 is always geometrically shaped such that liquid emerging from the feed 140 is passed on in the radial or axial direction in order to enable or to improve cooling or lubrication. In particular, the liquid may be in a radially outer region of the Centrifugal pendulum 100 are forwarded where movable elements of the centrifugal pendulum 100 are cooled or lubricated.

LIST OF REFERENCE NUMBERS

100 centrifugal pendulum

 105 axis of rotation

 1 10 pendulum flange

 1 15 pendulum mass

 120 additional pendulum flange

 125 pendulum roller

 130 hub

 135 rivets

 140 feeder

 145 axial recess

 150 beading

205 cranked or flared area

305 coaxial recess

 310 radial recess

405 rivets

 410 axial recess, axial breakthrough

Claims

claims
Centrifugal pendulum (100) with:
 a pendulum (1 10) which is rotatably mounted about a rotation axis (105); a pendulum mass (1 15) which is slidably mounted in a radially outer region of the pendulum (1 10) in the plane of rotation,
 wherein in a radially inner region of the pendulum (1 10) a liquid supply (140) is provided;
characterized in that
 the pendulum flange (1 10) is adapted to forward liquid emerging from the supply (140) in the radial or axial direction.
Centrifugal pendulum (100) according to claim 1, wherein the liquid in the direction of the pendulum mass (1 15) is forwarded.
Centrifugal pendulum (100) according to claim 2, wherein the pendulum (1 10) abuts axially on a further element (130) and a bead (150), wherein the bead (150) forms a radial channel together with the further element (130) ,
The centrifugal pendulum (100) of claim 3, further comprising a hub (130) to which the shuttle flange (110) is attached, a portion of the hub (130) covering the bead (150).
Centrifugal pendulum (100) according to one of the preceding claims, wherein the pendulum flange (1 10) is axially exposed at its radially inner boundary and the issued area (205) in the exit region of the feed (140) to liquid emerging from the feed (140) take.
A centrifugal pendulum (100) as claimed in any one of the preceding claims, further comprising a hub (130) to which the pendulum flange (110) is attached, the hub (130) including an axial recess (145) for passage of passed-on fluid.
Centrifugal pendulum (100) according to one of the preceding claims, wherein the pendulum flange (1 10) comprises an axial recess (410) for the passage of forwarded liquid.
8. centrifugal pendulum (100) according to one of the preceding claims, further comprising a hub (130) on which the pendulum flange (1 10) is fixed, wherein the feed (140) has a coaxial recess (305) and a radial recess (310) in the hub (130).
9. centrifugal pendulum (100) according to one of claims 1 to 7, wherein the centrifugal force pendulum (100) relative to the feed (140) is rotatably mounted.
10. centrifugal pendulum (100) according to any one of the preceding claims, further comprising a further pendulum (120), wherein the pendulum mass (1 15) axially between the two pendulum flanges (1 10, 120) is mounted.
1 1. Centrifugal pendulum (100) according to one of the preceding claims, wherein the pendulum (1 10) abuts axially on another element (130) of the centrifugal pendulum (100), the pendulum (1 10) extends further radially inwardly than the further element (130 ) and the radially inner portion of the pendulum (1 10) in the exit region of the feed (140) to absorb liquid emerging from the feed (140).
12. A device for transmitting torque, comprising a centrifugal pendulum (100) according to one of the preceding claims.
PCT/DE2015/200343 2014-06-20 2015-06-03 Centrifugal pendulum WO2015192841A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102014211860 2014-06-20
DE102014211860.3 2014-06-20

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201580032832.4A CN106471278B (en) 2014-06-20 2015-06-03 Centrifugal force pendulum
DE112015002910.9T DE112015002910A5 (en) 2014-06-20 2015-06-03 centrifugal pendulum

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WO2015192841A1 true WO2015192841A1 (en) 2015-12-23

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Application Number Title Priority Date Filing Date
PCT/DE2015/200343 WO2015192841A1 (en) 2014-06-20 2015-06-03 Centrifugal pendulum

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DE (1) DE112015002910A5 (en)
WO (1) WO2015192841A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017211204A1 (en) 2017-06-30 2019-01-03 Zf Friedrichshafen Ag Absorber system
FR3070463A1 (en) * 2017-08-30 2019-03-01 Valeo Embrayages Dry pendulum damping device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2127888A (en) * 1934-12-11 1938-08-23 Sarazin Raoul Roland Raymond Vibration reducing device
US5879237A (en) * 1995-03-07 1999-03-09 Komatsu Ltd. Device for damping rotational fluctuation and torsional vibration of rotary shaft
US20140090514A1 (en) * 2011-05-31 2014-04-03 Matthias Tögel Drive system for a vehicle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011076169A2 (en) * 2009-12-21 2011-06-30 Schaeffler Technologies Gmbh & Co. Kg Centrifugal pendulum mechanism
WO2011110168A1 (en) * 2010-03-11 2011-09-15 Schaeffler Technologies Gmbh & Co. Kg Centrifugal pendulum mechanism
FR2986592B1 (en) * 2012-02-07 2020-01-03 Valeo Embrayages Torque transmission device for a motor vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2127888A (en) * 1934-12-11 1938-08-23 Sarazin Raoul Roland Raymond Vibration reducing device
US5879237A (en) * 1995-03-07 1999-03-09 Komatsu Ltd. Device for damping rotational fluctuation and torsional vibration of rotary shaft
US20140090514A1 (en) * 2011-05-31 2014-04-03 Matthias Tögel Drive system for a vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017211204A1 (en) 2017-06-30 2019-01-03 Zf Friedrichshafen Ag Absorber system
WO2019001851A1 (en) 2017-06-30 2019-01-03 Zf Friedrichshafen Ag Lubricated absorber system
FR3070463A1 (en) * 2017-08-30 2019-03-01 Valeo Embrayages Dry pendulum damping device

Also Published As

Publication number Publication date
CN106471278B (en) 2019-07-05
DE112015002910A5 (en) 2017-03-02
CN106471278A (en) 2017-03-01

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