WO2018082739A1 - Drive train - Google Patents

Drive train Download PDF

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Publication number
WO2018082739A1
WO2018082739A1 PCT/DE2017/100914 DE2017100914W WO2018082739A1 WO 2018082739 A1 WO2018082739 A1 WO 2018082739A1 DE 2017100914 W DE2017100914 W DE 2017100914W WO 2018082739 A1 WO2018082739 A1 WO 2018082739A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing element
cover
drive train
input shaft
transmission input
Prior art date
Application number
PCT/DE2017/100914
Other languages
German (de)
French (fr)
Inventor
Lutz Ische
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 DE112017005601.2T priority Critical patent/DE112017005601A5/en
Publication of WO2018082739A1 publication Critical patent/WO2018082739A1/en

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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • 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
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • F16H21/22—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric
    • F16H21/24—Crank gearings; Eccentric gearings with one connecting-rod and one guided slide to each crank or eccentric without further links or guides
    • 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
    • F16H41/00—Rotary fluid gearing of the hydrokinetic type
    • F16H41/24—Details
    • 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
    • F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3224—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip capable of accommodating changes in distances or misalignment between the surfaces, e.g. able to compensate for defaults of eccentricity or angular deviations
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports

Definitions

  • the invention relates to a powertrain comprising a torque converter coupled to a transmission input shaft and having a lid and a sealing member coupled to the lid adapted to seal a gap between the lid or a lid hub of the torque converter and the transmission input shaft.
  • Such drive trains are known from the prior art, in which a torque converter is provided, whose lid or lid hub is adjacent to a transmission input shaft.
  • the adjacent to the lid hub or the lid so ultimately the coupling point between the lid or lid hub and transmission input shaft spaces are sealed by a sealing element against each other.
  • the sealing element ultimately seals the gap between the cover or the cover hub and the transmission input shaft, so that a fluid exchange between the two spaces, which are acted upon in particular by different pressures, is not possible.
  • a sealing element receptacle is provided according to the invention in a drive train of the type mentioned, in which the sealing element is arranged to be movable in the radial direction.
  • the invention is therefore based on the idea not to press the sealing element into a cover hub or a cover of the torque converter, but to provide a sealing element receiving, in which the sealing element is received radially movable.
  • the sealing element receptacle allows a radial movement of the sealing element, so that when a displacement of the crankshaft to the transmission input shaft no forced force arises, which acts on the transmission input shaft and thus on the bearing of Leitradstutzens.
  • the sealing element can be moved in the sealing element receiving in the radial direction, so that a potential axial offset can be compensated, but the sealing effect remains ensured. This advantageously prevents or at least reduces the transmission or emergence of positive forces, since the axial offset between the crankshaft and the transmission input shaft does not result in a damaging force on the bearing of the stator nozzle.
  • the sealing element receptacle is arranged on the cover or on a cover hub of the torque converter. Accordingly, the sealing element receptacle, in which the sealing element is arranged to be radially movable, can be arranged directly on the cover or, alternatively, can be arranged on a lid rivet of the torque converter coupled, in particular riveted, to the cover.
  • the sealing element receptacle can be formed integrally with or separately from the cover or the cover hub of the torque converter.
  • the sealing element receptacle is formed separately from the cover or the cover hub of the torque converter, this can be achieved by welding and / or pressing in sen and / or riveting and / or gluing and / or caulking and / or clipping on the lid or the lid hub be arranged.
  • metal-active gas welding, laser welding, capacitor discharge welding, resistance spot welding, resistance hump welding or similar welding methods can be used as the welding method.
  • a method with the lowest possible energy input should be chosen, so that the sealing element is not damaged when attaching the sealing element holder.
  • the drive train according to the invention can be developed to the effect that the sealing element has an annular support member or is coupled to an annular support member.
  • the sealing element has a preferably made of plastic, in particular an elastomer, formed, elastic element which is coupled to a carrier element.
  • the support member is annular according to this development and coupled to the elastic element.
  • the carrier element has a larger diameter than the elastic element and engages around this.
  • the elastic element is arranged between the carrier element and the transmission input shaft and seals the two spaces adjoining the elastic element, ie a gap between the transmission input shaft and the cover hub or the cover.
  • the carrier element is correspondingly positioned in the sealing element receptacle, wherein the elastic element is deformed in accordance with the movement of the carrier element. This prevents that a forced force is exerted on the transmission input shaft and thus on the bearing of the Leitradstutzens, which can damage the bearing.
  • a further embodiment of the drive train according to the invention may consist in that the carrier element has a radial section and an axial section formed at an angle thereto and connected to the radial section.
  • the cross section of the carrier element is therefore, for example, L-shaped, with the radial section extending substantially in the radial direction and the axial section extending substantially in the axial direction. Due to the rectangular profile of the carrier element, the sealing element receives the necessary stability, so that when an axial offset between the crankshaft and the transmission input shaft, the elastic element defor- can be miert to prevent a forced force is effected on the bearing of Leitradstutzens. Furthermore, it is ensured that the sealing element, in particular the carrier element remains movable in the radial direction.
  • the carrier element is fixed in the axial direction, since it bears against at least two opposite points or two sections of the sealing element receiving, whereby the axial position of the support element and thus the sealing element is fixed, but the radial position in dependence of the positioning of the crankshaft and the transmission input shaft variable is.
  • FIG. 1 shows a drive train according to the invention according to a first embodiment
  • FIG. 2 shows a drive train according to the invention according to a second embodiment.
  • FIG. 1 shows a schematic section of a drive train 1 comprising a torque converter 3 coupled to a transmission input shaft 2 with a cover 4 and a sealing element 5 coupled to the cover 4, which is designed to offset the two spaces 6, 7 adjoining the sealing element 5 against each other seal, wherein a sealing element receptacle 8 is provided, in which the sealing element 5 is arranged to be movable in the radial direction.
  • the sealing element receptacle 8 is connected to a cover hub 9.
  • the sealing element holder 8 is formed as a deep-drawn sheet metal part and welded to the lid 9.
  • the lid hub 9 is in turn riveted to the cover 4 of the torque converter 3.
  • the sealing element 5 is arranged radially movable within the sealing element receptacle 8.
  • a receiving area 13 for the sealing element 5 is therefore limited by sections 10, 1 1 of the sealing element holder 8 and a portion 12 of the lid hub 9.
  • the sealing element 5 is arranged radially movable. This makes it possible to compensate for an axial offset between the crankshaft (not shown) and the transmission input shaft 2.
  • the axial offset of the crankshaft is transmitted through the cover 4 of the torque converter 3 and the cover hub 9 to the sealing element receiving 8.
  • the sealing element 5 is moved or positioned radially in the sealing element receptacle 8.
  • the sealing element 5 has a carrier element 14 and an elastic element 15, which are coupled or connected to one another. Depending on the position of the support member 14, this causes a force on the elastic member 15 and deforms it. Due to the radial mobility of the support member 14, an axial offset can be compensated without a force on the transmission input shaft 2 and thus on a bearing of a Leitradstutzens (not shown) is effected.
  • the support member 14 further includes a radial portion 16 and an axial portion 17.
  • the carrier element therefore has a substantially L-shaped cross-section and is in axial contact with the sections 10, 12 in abutment.
  • the axial position of the carrier element 14 is therefore substantially fixed.
  • the support member 14 in the radial direction play to the section 1 1, that is, a certain tolerance between the axial portion 17 and the portion 1 1 and the support member 14 thus in the radial direction with a corresponding deformation of elastic element 15 is movable.
  • FIG. 2 shows a drive train 18 according to the invention according to a second embodiment.
  • the basic structure of the drive train 18 is the same as that of the drive train 1 of FIG. 1.
  • the same reference numerals are therefore used for the same components.
  • the drive train 18 of FIG. 2 has a sealing element receptacle 19, which is pressed into the cover hub 9.
  • a sealing element 5 is arranged in the sealing element receptacle 19 and can be moved radially in the sealing element receptacle. recorded 19.
  • the description of the function of the drive train 1 of Figure 1 is therefore transferable to the drive train 18.

Abstract

The invention relates to a drive train (1, 18), comprising a torque converter (3), which is coupled to a transmission input shaft (2) and has a cover (4), and a sealing element (5) coupled with the cover (4), said sealing element being designed to seal a gap between the cover (4) or a cover hub (9) of the torque converter (3) and the transmission input shaft (2), wherein a sealing element receptacle (8, 19) is provided, in which the sealing element (5) is movably arranged in the radial direction.

Description

Antriebsstrang  powertrain
Die Erfindung betrifft einen Antriebsstrang, umfassend einen mit einer Getriebeeingangswelle gekoppelten Drehmomentwandler mit einem Deckel und einem mit dem Deckel gekoppelten Dichtelement, das dazu ausgebildet ist, einen Spalt zwischen dem Deckel oder einer Deckelnabe des Drehmomentwandlers und der Getriebeeingangswelle abzudichten. The invention relates to a powertrain comprising a torque converter coupled to a transmission input shaft and having a lid and a sealing member coupled to the lid adapted to seal a gap between the lid or a lid hub of the torque converter and the transmission input shaft.
Derartige Antriebsstränge sind aus dem Stand der Technik bekannt, bei denen ein Drehmomentwandler vorgesehen ist, dessen Deckel bzw. Deckelnabe an eine Getriebeeingangswelle angrenzt. Die an die Deckelnabe bzw. den Deckel, also letztlich die Kopplungsstelle zwischen Deckel oder Deckelnabe und Getriebeeingangswelle angrenzenden Räume werden dabei mittels eines Dichtelements gegeneinander abgedichtet. Das Dichtelement dichtet dabei letztlich den Spalt zwischen dem Deckel bzw. der Deckelnabe und der Getriebeeingangswelle ab, so dass ein Fluidaustausch zwischen den beiden Räumen, die insbesondere mit unterschiedlichen Drücken beaufschlagt sind, nicht möglich ist. Such drive trains are known from the prior art, in which a torque converter is provided, whose lid or lid hub is adjacent to a transmission input shaft. The adjacent to the lid hub or the lid, so ultimately the coupling point between the lid or lid hub and transmission input shaft spaces are sealed by a sealing element against each other. The sealing element ultimately seals the gap between the cover or the cover hub and the transmission input shaft, so that a fluid exchange between the two spaces, which are acted upon in particular by different pressures, is not possible.
Es ist dazu ferner bekannt, in den Deckel oder insbesondere die Deckelnabe ein Dichtelement, beispielsweise einen Dichtring, einzupressen, um die beschriebene Dichtwirkung zu erzielen. Dabei ist es möglich, dass ein Achsversatz, also ein Versatz zwischen der Kurbelwelle und der Getriebeeingangswelle, eine Zwangskraft erzeugt, die durch das eingepresste Dichtelement auf die Getriebeeingangswelle übertragen wird. Mit anderen Worten wird eine Kraft auf die Getriebeeingangswelle bewirkt, sofern ein Versatz zwischen der Kurbelwelle und der Getriebeeingangswelle besteht. Dies hat zur Folge, dass die auf die Getriebeeingangswelle übertragene Kraft insbesondere auf das Lager des Leitradstutzens des Drehmomentwandlers wirkt, wodurch dieses beschädigt werden kann. Der Erfindung liegt daher die Aufgabe zu Grunde, einen Antriebsstrang anzugeben, bei dem eine Übertragung von Zwangskräften auf das Lager des Leitradstutzens reduziert oder verhindert wird. It is also known to press into the lid or in particular the lid hub a sealing element, such as a sealing ring, in order to achieve the sealing effect described. It is possible that an axial offset, ie an offset between the crankshaft and the transmission input shaft, generates a force which is transmitted to the transmission input shaft by the pressed-in sealing element. In other words, a force is applied to the transmission input shaft if there is an offset between the crankshaft and the transmission input shaft. As a result, the force transmitted to the transmission input shaft acts in particular on the bearing of the nozzle of the torque converter, whereby it can be damaged. The invention is therefore based on the object to provide a drive train in which a transmission of positive forces is reduced or prevented on the bearing of Leitradstutzens.
Zur Lösung dieser Aufgabe ist bei einem Antriebsstrang der eingangs genannten Art erfindungsgemäß eine Dichtelementaufnahme vorgesehen, in welcher das Dichtelement in Radialrichtung beweglich angeordnet ist. To solve this problem, a sealing element receptacle is provided according to the invention in a drive train of the type mentioned, in which the sealing element is arranged to be movable in the radial direction.
Die Erfindung beruht sonach auf der Idee, das Dichtelement nicht in eine Deckelnabe bzw. einen Deckel des Drehmomentwandlers einzupressen, sondern eine Dichtelementaufnahme vorzusehen, in der das Dichtelement radial beweglich aufgenommen ist. Die Dichtelementaufnahme ermöglicht dabei eine radiale Bewegung des Dichtelements, so dass bei einem Versatz der Kurbelwelle zur Getriebeeingangswelle keine Zwangskraft entsteht, die auf die Getriebeeingangswelle und somit auf das Lager des Leitradstutzens wirkt. Stattdessen kann das Dichtelement in der Dichtelementaufnahme in Radialrichtung bewegt werden, so dass ein potenzieller Achsversatz ausgeglichen werden kann, die Dichtwirkung jedoch gewährleistet bleibt. Dadurch ist vorteilhafterweise eine Übertragung bzw. ein Entstehen von Zwangskräften verhindert oder zumindest reduziert, da sich der Achsversatz zwischen der Kurbelwelle und der Getriebeeingangswelle nicht in einer schädlichen Zwangskraft auf das Lager des Leitradstutzens niederschlägt. The invention is therefore based on the idea not to press the sealing element into a cover hub or a cover of the torque converter, but to provide a sealing element receiving, in which the sealing element is received radially movable. The sealing element receptacle allows a radial movement of the sealing element, so that when a displacement of the crankshaft to the transmission input shaft no forced force arises, which acts on the transmission input shaft and thus on the bearing of Leitradstutzens. Instead, the sealing element can be moved in the sealing element receiving in the radial direction, so that a potential axial offset can be compensated, but the sealing effect remains ensured. This advantageously prevents or at least reduces the transmission or emergence of positive forces, since the axial offset between the crankshaft and the transmission input shaft does not result in a damaging force on the bearing of the stator nozzle.
Besonders bevorzugt ist bei dem erfindungsgemäßen Antriebsstrang vorgesehen, dass die Dichtelementaufnahme an dem Deckel oder an einer Deckelnabe des Drehmomentwandlers angeordnet ist. Demnach kann die Dichtelementaufnahme, in der das Dichtelement radial beweglich angeordnet ist, direkt an dem Deckel angeordnet sein oder alternativ an einer mit dem Deckel gekoppelten, insbesondere genieteten, Deckelnabe des Drehmomentwandlers angeordnet sein. Die Dichtelementaufnahme kann dabei einteilig mit oder separat zu dem Deckel bzw. der Deckelnabe des Drehmomentwandlers ausgebildet sein. Particularly preferably, it is provided in the drive train according to the invention that the sealing element receptacle is arranged on the cover or on a cover hub of the torque converter. Accordingly, the sealing element receptacle, in which the sealing element is arranged to be radially movable, can be arranged directly on the cover or, alternatively, can be arranged on a lid rivet of the torque converter coupled, in particular riveted, to the cover. The sealing element receptacle can be formed integrally with or separately from the cover or the cover hub of the torque converter.
Sofern die Dichtelementaufnahme separat zu dem Deckel oder der Deckelnabe des Drehmomentwandlers ausgebildet ist, kann diese durch Schweißen und/oder Einpres- sen und/oder Nieten und/oder Kleben und/oder Verstemmen und/oder Einclipsen an dem Deckel oder der Deckelnabe angeordnet sein. Insbesondere kann als Schweißverfahren Metall-Aktiv-Gas-Schweißen, Laserschweißen, Kondensatorentladungsschweißen, Widerstandspunktschweißen, Widerstandsbuckelschweißen oder ähnliche Schweißverfahren eingesetzt werden. Insbesondere ist ein Verfahren mit möglichst geringem Energieeintrag zu wählen, damit das Dichtelement beim Befestigen der Dichtelementaufnahme nicht beschädigt wird. If the sealing element receptacle is formed separately from the cover or the cover hub of the torque converter, this can be achieved by welding and / or pressing in sen and / or riveting and / or gluing and / or caulking and / or clipping on the lid or the lid hub be arranged. In particular, metal-active gas welding, laser welding, capacitor discharge welding, resistance spot welding, resistance hump welding or similar welding methods can be used as the welding method. In particular, a method with the lowest possible energy input should be chosen, so that the sealing element is not damaged when attaching the sealing element holder.
Der erfindungsgemäße Antriebsstrang kann dahingehend weitergebildet werden, dass das Dichtelement ein ringförmiges Trägerelement aufweist oder mit einem ringförmigen Trägerelement gekoppelt ist. Das Dichtelement weist dazu ein bevorzugt aus Kunststoff, insbesondere einem Elastomer, ausgebildetes, elastisches Element auf, das mit einem Trägerelement gekoppelt ist. Das Trägerelement ist gemäß dieser Weiterbildung ringförmig ausgebildet und mit dem elastischen Element gekoppelt. Das Trägerelement weist einen größeren Durchmesser auf als das elastische Element und umgreift dieses. Das elastische Element ist dabei zwischen dem Trägerelement und der Getriebeeingangswelle angeordnet und dichtet die beiden an das elastische Element angrenzenden Räume, also einen Spalt zwischen der Getriebeeingangswelle und der Deckelnabe bzw. dem Deckel ab. In Abhängigkeit eines Versatzes zwischen Kurbelwelle und Getriebeeingangswelle wird das Trägerelement entsprechend in der Dichtelementaufnahme positioniert, wobei das elastische Element entsprechend der Bewegung des Trägerelements deformiert wird. Dadurch wird verhindert, dass eine Zwangskraft auf die Getriebeeingangswelle und somit auf das Lager des Leitradstutzens ausgeübt wird, die das Lager beschädigen kann. The drive train according to the invention can be developed to the effect that the sealing element has an annular support member or is coupled to an annular support member. For this purpose, the sealing element has a preferably made of plastic, in particular an elastomer, formed, elastic element which is coupled to a carrier element. The support member is annular according to this development and coupled to the elastic element. The carrier element has a larger diameter than the elastic element and engages around this. The elastic element is arranged between the carrier element and the transmission input shaft and seals the two spaces adjoining the elastic element, ie a gap between the transmission input shaft and the cover hub or the cover. Depending on an offset between the crankshaft and the transmission input shaft, the carrier element is correspondingly positioned in the sealing element receptacle, wherein the elastic element is deformed in accordance with the movement of the carrier element. This prevents that a forced force is exerted on the transmission input shaft and thus on the bearing of the Leitradstutzens, which can damage the bearing.
Eine weitere Ausgestaltung des erfindungsgemäßen Antriebsstrangs kann darin bestehen, dass das Trägerelement einen Radialabschnitt und einen gewinkelt dazu ausgebildeten und mit dem Radialabschnitt verbundenen Axialabschnitt aufweist. Der Querschnitt des Trägerelements ist sonach beispielsweise L-förmig, wobei sich der Radialabschnitt im Wesentlichen in Radialrichtung und sich der Axialabschnitt im Wesentlichen in Axialrichtung erstreckt. Aufgrund des rechtwinkligen Profils des Trägerelements erhält das Dichtelement die nötige Stabilität, so dass bei einem Achsversatz zwischen Kurbelwelle und Getriebeeingangswelle das elastische Element defor- miert werden kann, um zu verhindern, dass eine Zwangskraft auf das Lager des Leitradstutzens bewirkt wird. Ferner wird gewährleistet, dass das Dichtelement, insbesondere das Trägerelement in Radialrichtung beweglich bleibt. Bevorzugt ist das Trägerelement dabei in Axialrichtung festgelegt, da es an wenigstens zwei gegenüberliegenden Punkten bzw. zwei Abschnitten der Dichtelementaufnahme anliegt, wodurch die axiale Position des Trägerelements und somit des Dichtelements festgelegt ist, die Radialposition jedoch in Abhängigkeit der Positionierung der Kurbelwelle und der Getriebeeingangswelle variabel ist. A further embodiment of the drive train according to the invention may consist in that the carrier element has a radial section and an axial section formed at an angle thereto and connected to the radial section. The cross section of the carrier element is therefore, for example, L-shaped, with the radial section extending substantially in the radial direction and the axial section extending substantially in the axial direction. Due to the rectangular profile of the carrier element, the sealing element receives the necessary stability, so that when an axial offset between the crankshaft and the transmission input shaft, the elastic element defor- can be miert to prevent a forced force is effected on the bearing of Leitradstutzens. Furthermore, it is ensured that the sealing element, in particular the carrier element remains movable in the radial direction. Preferably, the carrier element is fixed in the axial direction, since it bears against at least two opposite points or two sections of the sealing element receiving, whereby the axial position of the support element and thus the sealing element is fixed, but the radial position in dependence of the positioning of the crankshaft and the transmission input shaft variable is.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnungen erläutert. Die Zeichnungen sind schematische Darstellungen und zeigen: The invention will be explained below with reference to embodiments with reference to the drawings. The drawings are schematic representations and show:
Figur 1 einen erfindungsgemäßen Antriebsstrang gemäß einem ersten Ausführungsbeispiel; und 1 shows a drive train according to the invention according to a first embodiment; and
Figur 2 einen erfindungsgemäßen Antriebsstrang gemäß einem zweiten Ausführungsbeispiel. 2 shows a drive train according to the invention according to a second embodiment.
Figur 1 zeigt einen schematischen Ausschnitt eines Antriebsstrangs 1 , umfassend einen mit einer Getriebeeingangswelle 2 gekoppelten Drehmomentwandler 3 mit einem Deckel 4 und einem mit dem Deckel 4 gekoppelten Dichtelement 5, das dazu ausgebildet ist, die beiden an das Dichtelement 5 angrenzenden Räume 6, 7 gegeneinander abzudichten, wobei eine Dichtelementaufnahme 8 vorgesehen ist, in welcher das Dichtelement 5 in Radialrichtung beweglich angeordnet ist. FIG. 1 shows a schematic section of a drive train 1 comprising a torque converter 3 coupled to a transmission input shaft 2 with a cover 4 and a sealing element 5 coupled to the cover 4, which is designed to offset the two spaces 6, 7 adjoining the sealing element 5 against each other seal, wherein a sealing element receptacle 8 is provided, in which the sealing element 5 is arranged to be movable in the radial direction.
Ersichtlich ist die Dichtelementaufnahme 8 mit einer Deckelnabe 9 verbunden. In diesem Ausführungsbeispiel ist die Dichtelementaufnahme 8 als tiefgezogenes Blechteil ausgebildet und mit der Deckelnabe 9 verschweißt. Die Deckelnabe 9 ist wiederum mit dem Deckel 4 des Drehmomentwandlers 3 vernietet. Das Dichtelement 5 ist innerhalb der Dichtelementaufnahme 8 radial beweglich angeordnet. Ein Aufnahmebereich 13 für das Dichtelement 5 wird sonach durch Abschnitte 10, 1 1 der Dichtelementaufnahme 8 sowie einen Abschnitt 12 der Deckelnabe 9 begrenzt. Innerhalb dieses Auf- nahmebereichs 13 ist das Dichtelement 5 radial beweglich angeordnet. Dadurch ist es möglich, einen Achsversatz zwischen der Kurbelwelle (nicht dargestellt) und der Getriebeeingangswelle 2 auszugleichen. Der Achsversatz der Kurbelwelle wird durch den Deckel 4 des Drehmomentwandlers 3 bzw. die Deckelnabe 9 auf die Dichtelementaufnahme 8 übertragen. In Abhängigkeit der Positionierung bzw. der Relativposition zwischen Kurbelwelle und Getriebeeingangswelle 2 wird das Dichtelement 5 in der Dichtelementaufnahme 8 radial bewegt bzw. positioniert. As can be seen, the sealing element receptacle 8 is connected to a cover hub 9. In this embodiment, the sealing element holder 8 is formed as a deep-drawn sheet metal part and welded to the lid 9. The lid hub 9 is in turn riveted to the cover 4 of the torque converter 3. The sealing element 5 is arranged radially movable within the sealing element receptacle 8. A receiving area 13 for the sealing element 5 is therefore limited by sections 10, 1 1 of the sealing element holder 8 and a portion 12 of the lid hub 9. Within this Acquisition area 13, the sealing element 5 is arranged radially movable. This makes it possible to compensate for an axial offset between the crankshaft (not shown) and the transmission input shaft 2. The axial offset of the crankshaft is transmitted through the cover 4 of the torque converter 3 and the cover hub 9 to the sealing element receiving 8. Depending on the positioning or the relative position between the crankshaft and the transmission input shaft 2, the sealing element 5 is moved or positioned radially in the sealing element receptacle 8.
Zum Ausgleichen eines Achsversatzes weist das Dichtelement 5 ein Trägerelement 14 und ein elastisches Element 15 auf, die miteinander gekoppelt oder verbunden sind. In Abhängigkeit der Position des Trägerelements 14, bewirkt dieses eine Kraft auf das elastische Element 15 und verformt dieses. Aufgrund der radialen Beweglichkeit des Trägerelements 14 kann ein Achsversatz ausgeglichen werden, ohne dass eine Kraft auf die Getriebeeingangswelle 2 und somit auf ein Lager eines Leitradstutzens (nicht dargestellt) bewirkt wird. To compensate for an axial offset, the sealing element 5 has a carrier element 14 and an elastic element 15, which are coupled or connected to one another. Depending on the position of the support member 14, this causes a force on the elastic member 15 and deforms it. Due to the radial mobility of the support member 14, an axial offset can be compensated without a force on the transmission input shaft 2 and thus on a bearing of a Leitradstutzens (not shown) is effected.
Das Trägerelement 14 weist ferner einen Radialabschnitt 16 und einen Axialabschnitt 17 auf. Ersichtlich weist das Trägerelement daher einen im Wesentlichen L-förmigen Querschnitt auf und steht in Axialrichtung mit den Abschnitten 10, 12 in Anlage. Die axiale Position des Trägerelements 14 ist sonach im Wesentlichen festgelegt. In der in Figur 1 dargestellten Situation ist ferner ersichtlich, dass das Trägerelement 14 in Radialrichtung Spiel zu dem Abschnitt 1 1 hat, also eine gewisse Toleranz zwischen dem Axialabschnitt 17 und dem Abschnitt 1 1 besteht und das Trägerelement 14 somit in Radialrichtung unter entsprechender Deformation des elastischen Elements 15 beweglich ist. The support member 14 further includes a radial portion 16 and an axial portion 17. As can be seen, the carrier element therefore has a substantially L-shaped cross-section and is in axial contact with the sections 10, 12 in abutment. The axial position of the carrier element 14 is therefore substantially fixed. In the situation shown in Figure 1 is also seen that the support member 14 in the radial direction play to the section 1 1, that is, a certain tolerance between the axial portion 17 and the portion 1 1 and the support member 14 thus in the radial direction with a corresponding deformation of elastic element 15 is movable.
Figur 2 zeigt einen erfindungsgemäßen Antriebsstrang 18 gemäß einem zweiten Ausführungsbeispiel. Der grundsätzliche Aufbau des Antriebsstrangs 18 gleicht dem des Antriebsstrangs 1 von Figur 1 . Gleiche Bezugszeichen werden daher für gleiche Bauteile verwendet. Im Unterschied zum Antriebsstrang 1 von Figur 1 weist der Antriebsstrang 18 von Figur 2 eine Dichtelementaufnahme 19 auf, die in die Deckelnabe 9 eingepresst ist. Analog zum Antriebsstrang 1 von Figur 1 ist in der Dichtelementaufnahme 19 ein Dichtelement 5 angeordnet, das radial beweglich in der Dichtelement- aufnahme 19 aufgenommen ist. Die Beschreibung der Funktion des Antriebsstrangs 1 von Figur 1 ist sonach auf den Antriebsstrang 18 übertragbar. Figure 2 shows a drive train 18 according to the invention according to a second embodiment. The basic structure of the drive train 18 is the same as that of the drive train 1 of FIG. 1. The same reference numerals are therefore used for the same components. In contrast to the drive train 1 of FIG. 1, the drive train 18 of FIG. 2 has a sealing element receptacle 19, which is pressed into the cover hub 9. Analogous to the drive train 1 of FIG. 1, a sealing element 5 is arranged in the sealing element receptacle 19 and can be moved radially in the sealing element receptacle. recorded 19. The description of the function of the drive train 1 of Figure 1 is therefore transferable to the drive train 18.
Bezuqszeichenliste Antriebsstrang Tag List Drive train
Getriebeeingangswelle Transmission input shaft
Drehmomentwandler torque converter
Deckel cover
Dichtelement sealing element
Raum room
Raum room
Dichtelementaufnahme Sealing element receptacle
Deckelnabe cover hub
Abschnitt  section
Abschnitt  section
Abschnitt  section
Aufnahmebereich  reception area
Trägerelement  support element
elastisches Element  elastic element
Radialabschnitt  radial section
Axialabschnitt  axial
8 Antriebsstrang8 powertrain
9 Dichtelementaufnahme 9 sealing element holder

Claims

Patentansprüche claims
Antriebsstrang (1 , 18), umfassend einen mit einer Getriebeeingangswelle (2) gekoppelten Drehmomentwandler (3) mit einem Deckel (4) und einem mit dem Deckel (4) gekoppelten Dichtelement (5), das dazu ausgebildet ist, einen Spalt zwischen dem Deckel (4) oder einer Deckelnabe (9) des Drehmomentwandlers (3) und der Getriebeeingangswelle (2) abzudichten, dadurch gekennzeichnet, dass eine Dichtelementaufnahme (8, 19) vorgesehen ist, in welcher das Dichtelement (5) in Radialrichtung beweglich angeordnet ist. A drive train (1, 18) comprising a torque converter (3) coupled to a transmission input shaft (2) with a cover (4) and a sealing element (5) coupled to the cover (4) and adapted to form a gap between the cover (4) or a cover hub (9) of the torque converter (3) and the transmission input shaft (2), characterized in that a sealing element receiving (8, 19) is provided, in which the sealing element (5) is arranged to be movable in the radial direction.
Antriebsstrang nach Anspruch 1 , dadurch gekennzeichnet, dass die Dichtelementaufnahme (8, 19) an dem Deckel (4) oder an einer Deckelnabe (9) des Drehmomentwandlers (3) angeordnet ist. Drive train according to claim 1, characterized in that the sealing element receiving means (8, 19) is arranged on the cover (4) or on a cover hub (9) of the torque converter (3).
Antriebsstrang nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Dichtelementaufnahme (8, 19) durch Schweißen und/oder Einpressen und/oder Nieten und/oder Kleben und/oder Verstemmen und/oder Einclipsen an dem Deckel (4) oder der Deckelnabe (9) angeordnet ist. Drive train according to claim 1 or 2, characterized in that the sealing element receptacle (8, 19) by welding and / or pressing and / or riveting and / or gluing and / or caulking and / or clipping on the cover (4) or the lid hub ( 9) is arranged.
Antriebsstrang nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Dichtelement (5) ein ringförmiges Trägerelement (14) aufweist oder mit einem ringförmigen Trägerelement (14) gekoppelt ist. Drive train according to one of the preceding claims, characterized in that the sealing element (5) has an annular support member (14) or is coupled to an annular support member (14).
Antriebsstrang nach Anspruch 4, dadurch gekennzeichnet, dass das Trägerelement (14) einen Radialabschnitt (16) und einen gewinkelt dazu ausgebildeten und mit dem Radialabschnitt (16) verbundenen Axialabschnitt (17) aufweist. Drive train according to claim 4, characterized in that the carrier element (14) has a radial portion (16) and an angled thereto and formed with the radial portion (16) connected to the axial portion (17).
PCT/DE2017/100914 2016-11-07 2017-10-25 Drive train WO2018082739A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112017005601.2T DE112017005601A5 (en) 2016-11-07 2017-10-25 DRIVE TRAIN

Applications Claiming Priority (2)

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DE102016221713.5A DE102016221713A1 (en) 2016-11-07 2016-11-07 powertrain
DE102016221713.5 2016-11-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE953029C (en) * 1954-02-03 1956-11-22 Goetzewerke Shaft seal sealing on both sides
EP0439676A1 (en) * 1990-01-16 1991-08-07 Firma Carl Freudenberg Oil seal
JP2004353840A (en) * 2003-05-30 2004-12-16 Okamura Corp Torque converter and vehicle using the same
DE102014225925A1 (en) * 2014-12-15 2016-06-16 Elringklinger Ag Sealing arrangement and method for mounting a seal assembly
US20160201802A1 (en) * 2014-12-08 2016-07-14 United Technologies Corporation Knife edge seal tree

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE953029C (en) * 1954-02-03 1956-11-22 Goetzewerke Shaft seal sealing on both sides
EP0439676A1 (en) * 1990-01-16 1991-08-07 Firma Carl Freudenberg Oil seal
JP2004353840A (en) * 2003-05-30 2004-12-16 Okamura Corp Torque converter and vehicle using the same
US20160201802A1 (en) * 2014-12-08 2016-07-14 United Technologies Corporation Knife edge seal tree
DE102014225925A1 (en) * 2014-12-15 2016-06-16 Elringklinger Ag Sealing arrangement and method for mounting a seal assembly

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DE102016221713A1 (en) 2018-05-09

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