WO2020173515A1 - Dispositif de découplage à poulie pourvu d'un flux de lubrifiant dans la direction préférentielle - Google Patents

Dispositif de découplage à poulie pourvu d'un flux de lubrifiant dans la direction préférentielle Download PDF

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Publication number
WO2020173515A1
WO2020173515A1 PCT/DE2019/101086 DE2019101086W WO2020173515A1 WO 2020173515 A1 WO2020173515 A1 WO 2020173515A1 DE 2019101086 W DE2019101086 W DE 2019101086W WO 2020173515 A1 WO2020173515 A1 WO 2020173515A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulley
decoupler
friction ring
pulley decoupler
receiving space
Prior art date
Application number
PCT/DE2019/101086
Other languages
German (de)
English (en)
Inventor
Joseph GISSLER
Fritz Kornmeier
Christian Bruder
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
Application filed by Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Priority to KR1020217022276A priority Critical patent/KR20210126555A/ko
Priority to CN201980088187.6A priority patent/CN113302420A/zh
Publication of WO2020173515A1 publication Critical patent/WO2020173515A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
    • F16F15/14—Suppression 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
    • F16F15/1407—Suppression 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
    • F16F15/1414—Masses driven by elastic elements
    • F16F15/1435—Elastomeric springs, i.e. made of plastic or rubber
    • F16F15/1442—Elastomeric springs, i.e. made of plastic or rubber with a single mass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H2055/366—Pulleys with means providing resilience or vibration damping

Definitions

  • the invention relates to a pulley decoupler for the damping of Drehun uniformities for a motor vehicle, with a pulley for directing a torque in or out, which has a traction device receiving area for force-transferring the contacting of an endless traction device, such as a belt, a (entrainment) ) Flange for starting or introducing the torque, which is preferably arranged coaxially to the pulley and which is preferably rotatably mounted in a limited angular range relative to the pulley, at least one elastic element interposed between the pulley and the flange, which is preferably the pulley and the flange torque-transmitting and vibration-damping ver binds, a cover attached to the pulley, which forms a receiving space with the pulley in which a lubricant, such as grease, is for the elastic element, and with a Re ibring, which rests against the lid.
  • a lubricant such as grease
  • Pulley decouplers are already known from the prior art.
  • DE 10 20213 206 444 A1 discloses a drive wheel with a drive pulley having a traction means connection area and a shaft connection area which can be rotated relative to the traction means connection area against the damping effect of at least one torsional vibration damping device, the torsional vibration damping device being combined with a sealing and positioning device which is used to position the drive pulley in the axial direction.
  • the sealing and positioning device is formed by a plate spring and a friction ring preloaded by the plate spring and covers a spring receiving space filled with lubricant.
  • WO 2012/075 984 A1 discloses a belt pulley damper for damping torsional vibrations of a drive shaft, with a belt pulley for driving a traction means, in particular a tension belt, an input flange that can be connected to the drive shaft in a rotationally fixed manner, the input flange having at least one fastening means, in particular has an opening for connecting the inlet flange to the drive shaft, a torsional vibration damper, especially Special decoupler for torsional vibrations, for the transmission of a torque introduced via the input flange to the pulley and a bearing formed between the pulley and the input flange to support the pulley on the input flange, the bearing being in the radial direction between the fastening means and an axis of rotation of the input flange is arranged.
  • the lubricant (collected in the undercut) pushes outwards in an undirected manner, which can lead to a shortage of lubricant in the (spring) receiving space, which is also referred to as a spring channel, or even to a leakage of lubricant from inside the pulley decoupler .
  • a pulley decoupler is to be provided in which it is excluded that the lubricant escapes or collects there, in particular in the area of the friction ring.
  • the friction ring has an inner circumferential surface which is inclined to an axial direction of the pulley decoupler in such a way that centrifugal force-induced forced flow of the lubricant into the receiving space is enforced during operation.
  • the inner circumferential surface has a slope through which a preferred direction of the lubricant at speed in the direction of the belt Disk decoupler interior, ie the receiving space, is generated. The slope can be linear or non-linear.
  • the friction ring can have an inner diameter that increases in the direction of the receiving space. This means that the inner diameter becomes larger with the axial extension in the radial direction.
  • the inside diameter thus increases from axially outside to axially inside (in the radial direction).
  • an inner diameter is on an axially outer side, i. on a side facing away from the receiving space or facing away from the pulley, smaller than on an axially inner side, i.e. on a side of the friction ring facing the receiving space or facing the pulley.
  • the inner circumferential surface can correspond to a jacket surface of a truncated cone, an angle between a cone axis and a surface line of the truncated cone being less than 10 °. This ensures that the difference between the inside diameter on the axially outside and the inside diameter on the axially inside does not become too great, so that a radial extension of the section that forms the inner circumferential surface can be made small. It is particularly preferred if the angle is between 2 and 5 °, more preferably between 3 and 4 °. These angle values have proven to be particularly suitable and at the same time easy to produce.
  • an outer diameter of an outer circumferential surface of the section that forms the inner circumferential surface is constant.
  • the friction ring can be attached to a straight inner circumferential surface of the cover in a simple side.
  • the inner peripheral surface can have a curvature.
  • the lubricant can be fed into the interior of the pulley decoupler even at low speeds.
  • the inner circumferential surface can be curved elliptically, hyperbolically or parabolically.
  • the friction ring can have an axially extending tubular portion, the thickness, i. the radial extension of the tubular section tapers in the direction of the receiving space.
  • the preferred direction can thus be implemented in a simple manner.
  • the pulley decoupler can have a plate spring which is attached in such a way that it applies an axial preload to the friction ring in the direction of the cover.
  • a permanent friction torque / damping torque is applied by the friction ring to the cover, which advantageously has a vibration-damping effect.
  • the friction ring is preferably arranged in the axial direction between the cover and the plate spring.
  • the friction ring rests on a radial inside and / or on an axial outside of the cover. Simple positioning of the friction ring relative to the cover can thus be ensured and at the same time a large friction surface can be provided between the cover and the friction ring.
  • the cover, the friction ring and / or the plate spring can delimit the receiving space in an axial direction. This ensures that the lubricant cannot escape from the receiving space.
  • the receiving space can preferably be limited by the belt pulley, in particular completely enclosed.
  • the pulley decoupler can have a torsional vibration damper that is fixed to the flange or fixed to the pulleys. In this way, the torsional vibrations can also be dampened, which has an advantageous effect on the acoustic behavior.
  • the invention relates to a pulley decoupler (RSE) with a grease filling.
  • RSE pulley decoupler
  • the problem with a pulley decoupling system is that, due to wear and acoustics, lubricants are required that are thrown around inside the decoupling element / pulley decoupler (at speed, i.e. during operation) due to centrifugal forces and are in the start-stop mode Area of the friction ring (or the friction rings) and / or the hub are coming. As the speed increases, the lubricants push outwards in an undirected manner, which can lead to a lack of lubricant inside / in the spring duct and to lubricant leakage.
  • a belt pulley decoupler is provided with a friction ring which has a bevel, so that a preferred direction of the lubricants is generated at speed in the direction of the interior of the belt pulley coupler.
  • Fig. 1 is a longitudinal sectional view of a Riemeninent coupler according to the invention with a friction ring which generates a preferred direction for lubricants.
  • FIG. 1 shows a belt pulley decoupler 1 according to the invention for damping rotational irregularities for a motor vehicle.
  • auxiliary units of an internal combustion engine can be driven by means of an endless traction device such as a V-belt or a toothed belt.
  • an auxiliary unit is a generator or an air conditioning compressor.
  • the pulley decoupler 1 has a pulley 2 for Einlei or Auslei th a torque.
  • the pulley 2 has a Switzerlandstoffabilitybe rich 3 for force-transmitting contact with the endless traction means.
  • the traction device receiving area 3 is formed with teeth.
  • the pulley decoupler 1 has a flange 4 for introducing or introducing the torque.
  • the flange 4 is rotatably coupled to the belt pulley 2.
  • the flange 4 is arranged coaxially to the pulley 2.
  • the flange 4 and the belt pulley 2 are mounted in such a way that they can be rotated relative to one another in a limited angular range.
  • the pulley decoupler 1 has an elastic element 5.
  • the elastic element 5 serves as a spring device between the belt pulley 2 and the flange 4.
  • the elastic element 5 is interposed between the belt pulley 2 and the flange 4 in the torque flow.
  • the elastic element 5 ver binds the flange 4 to the belt pulley 2 in a torque-transmitting and vibration-damping manner.
  • the elastic element is designed as an arc spring 6.
  • the pulley decoupler 1 has a cover 7.
  • the cover 7 is firmly attached to the pulley 2.
  • the cover 7 and the pulley 2 form egg NEN receiving space 8.
  • the receiving space 8 is formed axially between the cover 7 and the belt pulley 2.
  • the receiving space 8 can hereinafter also be referred to as an interior space of the pulley decoupler 1 or as a spring channel.
  • the elastic element 5 is arranged in the receiving space 8. By doing Receiving space 8 is added lubricant.
  • the elastic element 5 is thus lubricated.
  • the lubricant that accumulates at speed in a radially outer region of the receiving space 8, ie inside the pulley decoupler 1, is indicated in FIG. 1 by hatching made of mutually parallel, interrupted lines.
  • the pulley decoupler 1 has a friction ring 9.
  • the friction ring 9 rests on the cover 7.
  • the friction ring 9 is pressed against the cover 7 so that the friction ring applies a (permanent) friction torque / damping torque to the cover 7.
  • the vibrations are dampened by the friction ring 9, since the energy of the pulley decoupler 1 is converted into thermal energy.
  • the friction ring 9 rests on an axially outer surface, i. E. on an axial side of the cover 7 facing away from the pulley.
  • the friction ring 9 rests on a (radial) inner peripheral surface of the cover 7.
  • the friction ring 9 has a (radial) inner circumferential surface 10 which is inclined towards an axial direction of the pulley decoupler 1.
  • the inner circumferential surface 10 is inclined in such a way that, when the pulley decoupler 1 is in operation, the lubricant is forced / guided into the receiving space 8 as a result of centrifugal force.
  • the axial direction is a direction along a longitudinal axis L of the pulley decoupler 1.
  • the inner peripheral surface 10 is inclined to the axial direction so that the diameter of the inner peripheral surface 10 is toward the pulley 2, i. towards the interior of the pulley decoupler 1, increases. That is, an inner diameter of the friction ring 9 increases toward the interior / an interior of the pulley decoupler 1.
  • the friction ring 9 has a disc-shaped portion extending in the radial direction and a tubular portion extending in the axial direction, i. a section with an annular cross-section cut from.
  • the thickness of the tubular section tapers in the direction of the interior of the pulley decoupler 1.
  • the inner peripheral surface 10 has the shape of a lateral surface of a truncated cone.
  • the inner circumferential surface 10 is conical in shape. det.
  • An angle which is enclosed between a cone axis and a generatrix of the cone frustum is smaller than 10 °.
  • the angle is constant.
  • the inner peripheral surface 10 is inclined in the longitudinal section by the angle to the axial direction. In the embodiment shown, the angle is less than 10 °.
  • the angle is preferably smaller than 5 °, for example between 2 and 5 °. The angle between 3 and 4 ° is also preferred.
  • the inner diameter of the friction ring 9 cannot increase continuously either.
  • the inner circumferential surface 10 can have a curvature.
  • the inner peripheral surface 10 may be elliptical, i. with positive curvature, hyperbolic, i.e. with negative curvature, or parabolic, i.e. with constant curvature, is curved.
  • the inner circumferential surface 10 can thus be curved convexly or concavely.
  • the pulley decoupler 1 has a plate spring 11.
  • the plate spring 11 is attached in such a way that it applies an axial preload to the friction ring 9.
  • the plate spring 11 rests on an axially outer surface, i. on an axial side facing away from the cover, of the friction ring 9.
  • the friction ring 9 is pressed against the cover 7 by the spring force of the Tellerfe 11.
  • the friction ring 9 is thus arranged in the axial direction between the cover 7 and the plate spring 11.
  • the receiving space 8 is covered by the plate spring 11.
  • the friction ring 9 serves as a seal between the cover 7 and the plate spring 11 and prevents lubricant leakage.
  • the belt pulley 2 is rotatably mounted on a hub 13 of the belt pulley decoupler 1 via a bearing 12.
  • the hub 13 is non-rotatably connected to a crankshaft of the internal combustion engine.
  • the flange 4 is attached to the hub 13 in a rotationally fixed manner.
  • the hub 13 has a radially outwardly projecting, preferably circumferential, edge 14 on which the belt pulley 2 is supported in the axial direction. Between the edge 14 and the pulley 2, a second friction ring 15 is arranged, which applies a frictional torque / damping torque to the pulley.
  • a torsional vibration damper 16 is attached on the pulley decoupler 1, a torsional vibration damper 16 is attached. The torsional vibration damper 16 is firmly connected to the flange 4 (and the hub 13).
  • a fastening means 17 connects the hub 13, the flange 4, the plate spring 11, the torsional vibration damper 16 and a disk 18 firmly to one

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Pulleys (AREA)

Abstract

L'invention concerne un dispositif de découplage à poulie (1) destiné à amortir les irrégularités de rotation d'un véhicule automobile, comprenant une poulie (2) destinée à l'entrée ou la sortie d'un couple, qui présente une zone de réception des moyens de traction (3) pour la mise en contact par transmission de force d'un moyen de traction sans fin, une bride (4) couplée en rotation à la poulie (2) pour la sortie ou l'entrée d'un couple, un élément élastique (5, 6) intermédiaire entre la poulie (2) et la bride (4), un couvercle (7) fixé à la poulie (2) qui forme avec la poulie (2) un espace de réception (8) pour l'élément élastique (5), et un anneau de friction (9) qui repose sur le couvercle (7). L'anneau de friction (9) comprend une surface périphérique intérieure (10) qui est inclinée par rapport à une direction axiale du dispositif de découplage à poulie (1) de telle manière que, pendant le fonctionnement, la force centrifuge oblige le lubrifiant à s'écouler dans l'espace de réception (8).
PCT/DE2019/101086 2019-02-26 2019-12-13 Dispositif de découplage à poulie pourvu d'un flux de lubrifiant dans la direction préférentielle WO2020173515A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020217022276A KR20210126555A (ko) 2019-02-26 2019-12-13 선호 방향으로 윤활제 흐름을 갖는 풀리 디커플러
CN201980088187.6A CN113302420A (zh) 2019-02-26 2019-12-13 具有沿主要方向的润滑剂流的皮带盘脱耦器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019104813.3 2019-02-26
DE102019104813.3A DE102019104813B4 (de) 2019-02-26 2019-02-26 Riemenscheibenentkoppler mit Schmierstofffluss in Vorzugsrichtung

Publications (1)

Publication Number Publication Date
WO2020173515A1 true WO2020173515A1 (fr) 2020-09-03

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Application Number Title Priority Date Filing Date
PCT/DE2019/101086 WO2020173515A1 (fr) 2019-02-26 2019-12-13 Dispositif de découplage à poulie pourvu d'un flux de lubrifiant dans la direction préférentielle

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KR (1) KR20210126555A (fr)
CN (1) CN113302420A (fr)
DE (1) DE102019104813B4 (fr)
WO (1) WO2020173515A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021106825A1 (de) 2021-03-19 2022-09-22 Schaeffler Technologies AG & Co. KG Riemenscheibenentkoppler mit seitlich zum Riementräger angeordneten Dämpfungsfedern
DE102021106827B3 (de) 2021-03-19 2022-07-28 Schaeffler Technologies AG & Co. KG Riemenscheibenentkoppler mit aufgeteilter Lagerung
DE102021106819B3 (de) 2021-03-19 2022-06-15 Schaeffler Technologies AG & Co. KG Riemenscheibenentkoppler mit Riementräger und unabhängig von dem Riementräger gedämpftem Zusatzriementräger
DE102021106826B3 (de) 2021-03-19 2022-08-04 Schaeffler Technologies AG & Co. KG Riemenscheibenentkoppler mit Riementräger und gekoppelt mit dem Riementräger gedämpftem Zusatzriementräger
DE102021106830B3 (de) 2021-03-19 2022-06-15 Schaeffler Technologies AG & Co. KG Riemenscheibenentkoppler mit Schaufelgeometrie zum Einleiten eines Kühlfluids

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008058499A2 (fr) * 2006-11-15 2008-05-22 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Roue d'entraînement comportant au moins une poulie d'entraînement
WO2012075984A1 (fr) 2010-12-09 2012-06-14 Schaeffler Technologies AG & Co. KG Amortisseur à poulie
WO2013155615A1 (fr) * 2012-04-18 2013-10-24 Litens Automotive Partnership Dispositif de transmission d'énergie comprenant un découpleur à roue libre
DE102013206444A1 (de) 2012-04-24 2013-10-24 Schaeffler Technologies AG & Co. KG Triebrad

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4225314B4 (de) * 1991-08-07 2004-08-05 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Triebscheibe
EP2031272A3 (fr) * 2007-08-27 2010-07-28 LuK Lamellen und Kupplungsbau Beteiligungs KG Amortisseur de vibrations de torsions
WO2014094760A1 (fr) * 2012-12-19 2014-06-26 Schaeffler Technologies AG & Co. KG Découpleur pour l'amortissement d'une transmission de couple entre un arbre d'entraînement d'un véhicule automobile et une poulie
DE102015210164B3 (de) * 2015-06-02 2016-11-03 Schaeffler Technologies AG & Co. KG Riemenscheibenentkoppler mit Gleitschalen
DE102017115466A1 (de) * 2017-07-11 2019-01-17 Schaeffler Technologies AG & Co. KG Riemenscheibenentkoppler mit integrierter Rutschkupplung sowie ein Nebenaggregatetrieb mit einem solchen Riemenscheibenentkoppler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008058499A2 (fr) * 2006-11-15 2008-05-22 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Roue d'entraînement comportant au moins une poulie d'entraînement
WO2012075984A1 (fr) 2010-12-09 2012-06-14 Schaeffler Technologies AG & Co. KG Amortisseur à poulie
WO2013155615A1 (fr) * 2012-04-18 2013-10-24 Litens Automotive Partnership Dispositif de transmission d'énergie comprenant un découpleur à roue libre
DE102013206444A1 (de) 2012-04-24 2013-10-24 Schaeffler Technologies AG & Co. KG Triebrad

Also Published As

Publication number Publication date
DE102019104813B4 (de) 2021-01-21
CN113302420A (zh) 2021-08-24
KR20210126555A (ko) 2021-10-20
DE102019104813A1 (de) 2020-08-27

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