WO2018077328A1 - Actionneur servant à l'actionnement d'un embrayage et chaîne de transmission de couple - Google Patents

Actionneur servant à l'actionnement d'un embrayage et chaîne de transmission de couple Download PDF

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Publication number
WO2018077328A1
WO2018077328A1 PCT/DE2017/100784 DE2017100784W WO2018077328A1 WO 2018077328 A1 WO2018077328 A1 WO 2018077328A1 DE 2017100784 W DE2017100784 W DE 2017100784W WO 2018077328 A1 WO2018077328 A1 WO 2018077328A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
actuator
spindle
radial projection
drive
Prior art date
Application number
PCT/DE2017/100784
Other languages
German (de)
English (en)
Inventor
Marko Heyne
Viktor Franz
Felix Bunout
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 DE112017005425.7T priority Critical patent/DE112017005425A5/de
Priority to CN201780065028.5A priority patent/CN109844342B/zh
Publication of WO2018077328A1 publication Critical patent/WO2018077328A1/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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D29/00—Clutches and systems of clutches involving both fluid and magnetic actuation
    • F16D29/005—Clutches and systems of clutches involving both fluid and magnetic actuation with a fluid pressure piston driven by an electric motor
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D2025/081—Hydraulic devices that initiate movement of pistons in slave cylinders for actuating clutches, i.e. master cylinders

Definitions

  • the invention relates to an actuator for actuating a clutch, in particular a friction clutch of a motor vehicle, as well as a
  • Friction clutches are well known for transmitting torque from a prime mover to a drivetrain, such as one
  • Known central disengers used in disengagement systems are, for example, electrical central disengagers or hydraulically functioning central disengagers.
  • the latter have a piston which can be displaced by a fluid pressure and thus actuate a lever of a clutch.
  • an actuator with planetary roller screw spindle which rotatably supports the spindle in a spindle drive in a fixed and translationally displaceable manner.
  • the spindle acts on a displaceably mounted piston for attachment of a fluid pressure.
  • a pressure piece is rotatably arranged, which serves as an interface to the piston.
  • actuators are already known which are embodied, for example, as shown in FIG.
  • Such an actuator 1 has between a spindle end, which is designed here as the cylinder 120 facing the end 12 of the drive member 10 formed as a spindle, and the cylinder 120 designed as a sheet metal pot 2 Connecting element 30 on.
  • This connecting element is the piston of the piston-cylinder unit and acts in the axial direction 30 positively on a radial projection 21 at the spindle end, so that on this form-fitting of the translationally displaceable spindle a force in the connecting element 30 and from this to the sheet metal pot 2 designed piston for the purpose of translational
  • Displacement of the sheet metal pot 2 is aufbringar.
  • the drive member 10 and the spindle is positively and / or non-positively connected via an undercut 4 with the spindle head 20.
  • the connecting element 30 designed by the radial projection 21, designed as a sheet metal pot 2 and serving as a piston, also holds a sealing ring 60 firmly in the axial direction via a positive connection 5.
  • Connecting element 30 is a forming process or a bending of a designed as a tab 3 region of the designed as a sheet metal pot 2
  • the present invention seeks to provide an actuator that combines a simple and inexpensive installation with optimum functionality and a long service life.
  • the features of the claims may be combined in any technically meaningful manner, for which purpose the explanations of the following description as well as features of the figures may be consulted which comprise additional embodiments of the invention.
  • the terms radial, axial and circumferential direction in the context of the present invention always refer to the axis of rotation of the friction coupling to be connected to the actuator, or to the longitudinal axis of the drive member.
  • the invention relates to an actuator for actuating a clutch, in particular a friction clutch of a motor vehicle.
  • the actuator comprises a translationally displaceable drive member, in particular a spindle of a spindle drive, and a piston of a piston-cylinder unit, wherein the drive member with the piston is mechanically coupled and the actuator has at the end facing the piston of the drive member has a radial projection.
  • the actuator according to the invention is thus a so-called MCA (modular clutch actuator) for actuating a clutch, namely preferably indirectly via a suitable transmission unit, such. a Gottausschreiber.
  • the spindle drive used is preferably a Planetenndzgetriebe for
  • Piston in the axial direction possible. This axial displacement of the piston of the piston-cylinder unit is transmitted hydraulically or pneumatically to another piston.
  • the piston-cylinder unit is also referred to as master cylinder or AMC (Actuator Master Cylinder).
  • the radial projection is preferably formed by the serving as a drive member spindle itself, or fixed to the spindle end.
  • Projection extends radially outward than the maximum radial
  • the axial enclosure of the radial projection by means of the shell unit is such that the shell unit at the radially outer edge of the radial projection encloses at least a segment of the circumference of the radial projection, so that Although an axial displacement of the shell unit with respect to the radial projection is preferably possible with a certain play, but is generally blocked.
  • An individual shell at least partially surrounds the edge of a segment of a radial projection designed as a cylinder.
  • Embodiment is designed such a single shell as a radial outer side of a hollow Tom.
  • the shell unit is composed of two identical individual shells.
  • This embodiment of the tray unit allows a simple and inexpensive installation. So it is now no longer necessary to perform a bending operation to produce a positive connection compared to the conventional, designed as a sheet metal fasteners elements.
  • the mechanical coupling of the piston with the drive member thus takes place via the radial projection and the shell unit.
  • the radial projection is preferably fixedly arranged on the drive member, and the shell unit acts positively and / or non-positively on the piston.
  • the tray unit serves as a
  • the shell unit has an inner space for receiving the radial projection whose maximum radial extent is greater than the maximum radial extent of the radial projection located in the interior, so that the shell unit and the radial projection in With respect to each other have a radial clearance.
  • the radial projection is rotationally symmetrical, so that according to the invention, the diameter of the interior is greater than that
  • Interior is in a rotationally symmetrical interior thus the diameter of the interior.
  • the inventive design of the actuator is an optionally occurring lateral offset and in certain areas also one
  • the drive member is a rotationally fixed and translationally displaceable spindle of a spindle drive, in particular a
  • the spindle is rotatably supported so that it performs an axial stroke upon rotation of an engaging in the thread of the spindle spindle nut.
  • the radial projection and the interior are designed substantially cylindrical. It may be that certain deviations from the cylindrical shape exist, such as rounded areas between the lateral surface and the top surfaces.
  • the interior and the radial projection are preferably rotationally symmetrical, so that the said ratios are to be applied to the diameters of the interior and the radial projection.
  • the radial projection may be formed by a spindle head which is mechanically at one end of a spindle forming the drive member
  • the spindle has an end region facing the piston at its circumference having circumferential groove, wherein the spindle head has at least one molding element which engages radially in the groove.
  • the molding element on the spindle head can be a peripheral bead or flanging, which engages in the groove or an exemption in the spindle, or even a single projection or a plurality of projections which engages radially in the groove and which engage radially in the groove.
  • the shell unit and the piston are mechanically connected to each other at least along the axial direction positively, wherein the positive connection is configured with an axial play. This means that a suitably trained
  • Form element of the shell unit for the realization of the positive connection and a correspondingly shaped mold element of the piston for the realization of the positive connection are dimensioned such that they are axially movable with respect to each other over a certain distance.
  • the pressure prevailing in the cylinder of the piston-cylinder unit acts on the piston.
  • Cantilever transmits.
  • the pressure force is transmitted to a seal arranged there, which in turn transmits the pressure force to the shell unit. Due to the axial play between the shell unit and the piston, the force introduction regions shell unit and the central region of the radial projection on the drive member are thus decoupled from one another. As a result, any dimensional tolerances that may occur on the piston, on the radial projection and / or on the shell unit do not have a negative effect here.
  • the piston is much less stressed by this division, because bending moments at the transition to the sealing base or the piston crown can no longer occur.
  • the actuator may comprise a reinforcing element which relates the individual shells of the shell unit in their positions fixed to one another positively and / or positively.
  • the reinforcing element is preferably designed for this purpose as a ring, extending from the radially outer side tabs or clips that engage in correspondingly shaped form elements on the half-shells, so that the half shells form a ring-shaped shell unit as a whole.
  • the material of the reinforcing element is preferably one which exposes the sealing surface of the inside of the piston-cylinder unit with a friction movement thereon to a lower abrasive wear. It is preferably provided that the reinforcing element at least on the inside of the
  • Cylinder of the piston-cylinder unit facing side of polyamide, in particular a non-fibrous polyamide, such as a non-glass fiber-filled polymer is executed.
  • a suitable for the purpose of reducing wear material of the tread of the cylinder may be, for example, a thermoplastic material with glass fiber filling.
  • this has a sealing ring as a seal, which is at least positively held by the piston, wherein the piston forms at least one radial projection, the
  • the radial projection may be formed as a radially encircling ring or shoulder or collar.
  • the diameter ratios of piston and sealing ring can also be designed such that in addition to the positive connection between the piston and sealing ring of the sealing ring is fixed by the piston frictionally.
  • the piston forms a collar as
  • an actuator for a clutch of a motor vehicle in which using a drive via a transmission, in particular a Planetenxxlzgetriebe, an axially displaceably mounted in a housing piston is displaced so fluidically to relocate another piston, which in turn like For example, in a known Gottitzer, a lever spring of the friction clutch actuated.
  • a drive via a transmission in particular a Planetenxxlzgetriebe
  • an axially displaceably mounted in a housing piston is displaced so fluidically to relocate another piston, which in turn like
  • a lever spring of the friction clutch actuated.
  • Torque transmission train comprising a drive unit with a
  • Actuator according to the invention for actuating the friction clutch wherein the output shaft for torque transmission by means of the friction clutch with the drive train is detachably connectable.
  • the friction clutch here is the introduction of at least one force in the friction clutch for the purpose of opening the friction clutch in a normally-engaged clutch, and for the purpose of closing the friction clutch in a normally-disengaged clutch to understand.
  • the torque transmission line is configured to be one of a
  • Drive unit for example an energy conversion machine, preferably an internal combustion engine or an electric drive machine,
  • a consumer is, for example, a drive wheel of a motor vehicle or an electric generator for providing electrical energy.
  • a recording of an inertial energy introduced by, for example, a drive wheel can also be implemented.
  • the drive wheel then forms the drive unit, wherein its inertial energy by means of the friction clutch to an electric generator for recuperation, ie for the electrical storage of the braking energy, in a suitably equipped drive train is transferable.
  • Fig. 2 an inventive actuator in an exploded view
  • Fig. 4 an inventive actuator in sectional view.
  • FIGS. 2 and 3 show the invention-relevant area of the invention
  • FIG. 2 shows the individual parts of the actuator in FIG.
  • the drive member 10 is configured as a spindle which cooperates with a spindle drive 1 1 only partially shown here.
  • the drive member 10 and the spindle is in the embodiment shown here translationally displaceable and rotatably mounted so that it performs a linear stroke upon rotation of a spindle nut on the spindle thread. This stroke acts on the piston 1 shown 10.
  • a so-called spindle head 20 is arranged at the piston 1 10 facing the end 12 of the drive member 10.
  • This spindle head 20 forms a clearly visible radial projection 21, which extends radially further outward than the drive member 10 itself.
  • This radial projection 21 is configured to a first
  • Reinforcing element 50 is provided, which the individual shells 41, 42 positively and / or non-positively arranged by engagement from the periphery and axially
  • FIG. 3 shows the invention-relevant section in the assembled state in the area of the actuator. Here it is evident that in the here shown
  • Embodiment of the spindle head 20 on the piston 1 10 facing the end 12 of the drive member 10 is seated.
  • the drive element 10, which is equipped as a spindle has a groove 13 on its circumference into which, in the embodiment shown here, a shaped element 34 formed on the inside of the spindle head engages by forming a bead 23. As a result, an axial displacement between the spindle head 20 and drive member 10 is prevented. It is also apparent from Figure 3, that the two individual shells a
  • Form shell unit 40 which here represents the connecting element 30 between the spindle head 20 and the piston 1 10.
  • the radially outer edge 22 of the radial projection 21 is surrounded by the shell unit 40 radially and in the edge region also axially.
  • the shell unit 40 thus forms an interior 31, which has a maximum radial extent 32.
  • This maximum radial extent 32 of the inner space 31 is much greater than the maximum radial extent 25 of the radial projection 21, thereby creating a radial clearance 70 between
  • Drive member 10 is made. This radial play 70 allows for a slight lateral displacement of the longitudinal axis of the drive member 10 with respect to the longitudinal axis of the piston-cylinder unit 100.
  • a sealing ring 60 is arranged, which is supported with its sealing base 61 on the reinforcing element 50.
  • the shell unit 40 or its individual shells are received in a groove 1 12 in the piston 1 10.
  • This groove 1 12 and the engaging portions of the shells of the shell unit 40 are dimensioned such that an axial play 80 exists.
  • This axial clearance 80 causes a decoupling of the acted upon by the compressive forces 130 parts of the actuator.
  • the piston 10 acted upon by pressure force 130 acts with its central region directly on the spindle head 20 and thus on the drive member 10.
  • the pressure force 130 on the sealing ring 60 and from there via the reinforcing element 50 on the shell unit 40 Due to the axial play 80 between the
  • Shell unit and the piston if necessary, existing tolerances or angular deviations do not significantly increase the wear.
  • Figure 4 shows a modular clutch actuator 200, in which case clearly the spindle drive 1 1 can be seen, which realizes the translational displacement of the designed as a spindle drive member 10. This leads to a

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

L'invention concerne un actionneur (1) servant à l'actionnement d'un embrayage, comportant un organe d'entraînement (10) pouvant être déplacé en translation, en particulier une broche d'un entraînement à broche, et un piston (100) d'une unité piston-cylindre (100), l'organe d'entraînement (10) étant accouplé mécaniquement au piston (110) et l'actionneur comprenant, à l'extrémité (12) de l'organe d'entraînement (10) tournée vers le piston (110), une saillie radiale (21). L'actionneur comporte en outre un ensemble de coques (40) composé de plusieurs coques individuelles (41, 42) et relié au piston (110), lequel ensemble de coques entoure la saillie radiale (21) axialement au moins dans certaines régions et radialement au moins dans certaines régions. L'invention concerne en outre une chaîne de transmission de couple. L'actionneur selon l'invention permet de relier, de manière avantageuse en termes de contraintes et sans surcroît de complexité lors de la conception et de la fabrication, un piston hydraulique à un entraînement linéaire tout en compensant le jeu radial.
PCT/DE2017/100784 2016-10-27 2017-09-14 Actionneur servant à l'actionnement d'un embrayage et chaîne de transmission de couple WO2018077328A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112017005425.7T DE112017005425A5 (de) 2016-10-27 2017-09-14 Aktor zur betätigung einer kupplung und drehmomentübertragungsstrang
CN201780065028.5A CN109844342B (zh) 2016-10-27 2017-09-14 用于操纵离合器的执行器和扭矩传递系

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016221159.5 2016-10-27
DE102016221159.5A DE102016221159A1 (de) 2016-10-27 2016-10-27 Aktor zur Betätigung einer Kupplung und Drehmomentübertragungsstrang

Publications (1)

Publication Number Publication Date
WO2018077328A1 true WO2018077328A1 (fr) 2018-05-03

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ID=60009390

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2017/100784 WO2018077328A1 (fr) 2016-10-27 2017-09-14 Actionneur servant à l'actionnement d'un embrayage et chaîne de transmission de couple

Country Status (3)

Country Link
CN (1) CN109844342B (fr)
DE (2) DE102016221159A1 (fr)
WO (1) WO2018077328A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021189316A1 (fr) * 2020-03-25 2021-09-30 舍弗勒技术股份两合公司 Actionneur hydraulique ayant un filtre magnétique et mécanisme d'actionnement d'embrayage hydraulique
DE102020111174B4 (de) 2020-04-24 2023-05-04 Schaeffler Technologies AG & Co. KG Aktor und Drehmoment-Übertragungseinrichtung

Citations (3)

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Publication number Priority date Publication date Assignee Title
WO2015117612A2 (fr) 2014-02-06 2015-08-13 Schaeffler Technologies AG & Co. KG Actionneur comprenant une vis à rouleaux satellites
EP2927528A2 (fr) * 2014-03-31 2015-10-07 Schaeffler Technologies GmbH & Co. KG Bloc de pédale d'embrayage
DE102014223479B3 (de) * 2014-11-18 2016-04-07 Schaeffler Technologies AG & Co. KG Verfahren zur Einstellung einer Anschlagposition eines hydrostatischen Kupplungsaktors

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US9151385B2 (en) * 2007-10-27 2015-10-06 Continental Teves Ag & Co. Ohg Multi-part piston construction for a brake caliper of a disk brake
DE102009021350A1 (de) * 2008-06-05 2009-12-17 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Kolbenstangenanbindung
DE102009005828A1 (de) * 2009-01-22 2010-07-29 Fte Automotive Gmbh Nehmerzylinder für ein schwingungsgedämpftes hydraulisches Kraftübertragungssystem, insbesondere eine hydraulische Kupplungsbetätigung für Kraftfahrzeuge
JP5368528B2 (ja) * 2011-10-17 2013-12-18 日信工業株式会社 静止用機械式ディスクブレーキ
CN202833777U (zh) * 2012-07-03 2013-03-27 浙江显峰汽车配件有限公司 一种汽车液压制动主缸
WO2014048427A1 (fr) * 2012-09-26 2014-04-03 Schaeffler Technologies AG & Co. KG Système de débrayage pour un embrayage d'un véhicule à moteur
DE102013213888B3 (de) * 2013-07-16 2014-11-13 Robert Bosch Gmbh Elektrohydraulischer Aktuator
KR102312769B1 (ko) * 2013-12-06 2021-10-15 섀플러 테크놀로지스 아게 운트 코. 카게 유성 롤러 스핀들(pwg)을 구비한 액추에이터
DE102014223596B4 (de) * 2014-11-19 2016-06-02 Schaeffler Technologies AG & Co. KG Kolben-Zylinder-Anordnung für eine hydraulische Ausrückeinrichtung, insbesondere einen Geberzylinder einer Kupplungsbetätigungseinrichtung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015117612A2 (fr) 2014-02-06 2015-08-13 Schaeffler Technologies AG & Co. KG Actionneur comprenant une vis à rouleaux satellites
EP2927528A2 (fr) * 2014-03-31 2015-10-07 Schaeffler Technologies GmbH & Co. KG Bloc de pédale d'embrayage
DE102014223479B3 (de) * 2014-11-18 2016-04-07 Schaeffler Technologies AG & Co. KG Verfahren zur Einstellung einer Anschlagposition eines hydrostatischen Kupplungsaktors

Also Published As

Publication number Publication date
DE102016221159A1 (de) 2018-05-03
CN109844342A (zh) 2019-06-04
CN109844342B (zh) 2021-03-02
DE112017005425A5 (de) 2019-07-25

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