EP1616108A2 - Improved clutch control release bearing - Google Patents

Improved clutch control release bearing

Info

Publication number
EP1616108A2
EP1616108A2 EP04742851A EP04742851A EP1616108A2 EP 1616108 A2 EP1616108 A2 EP 1616108A2 EP 04742851 A EP04742851 A EP 04742851A EP 04742851 A EP04742851 A EP 04742851A EP 1616108 A2 EP1616108 A2 EP 1616108A2
Authority
EP
European Patent Office
Prior art keywords
housing
clutch control
stopper according
fixed
control stopper
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP04742851A
Other languages
German (de)
French (fr)
Inventor
Daniel Maingaud
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Embrayages SAS
Original Assignee
Valeo Embrayages SAS
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 Valeo Embrayages SAS filed Critical Valeo Embrayages SAS
Publication of EP1616108A2 publication Critical patent/EP1616108A2/en
Withdrawn legal-status Critical Current

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
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
    • 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
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
    • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings
    • F16D23/142—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings with a resilient member acting radially between the bearing and its guide means
    • 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
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/06—Lubrication details not provided for in group F16D13/74

Definitions

  • the present invention relates to an improved clutch control stop, in particular for a motor vehicle.
  • a clutch control stop of the type comprising rolling means comprising rolling elements in contact with two opposite rolling tracks, respectively rotary and fixed in rotation, these rolling means being housed in a housing, of form general annular, delimited by two substantially coaxial parts, respectively rotary and fixed in rotation, between which are inserted sealing means intended to retain a lubricant contained in the housing.
  • the housing described in GB-A-1 101 035 is carried by a fixed rotating support, of generally annular shape.
  • This support is intended to connect the housing to means for controlling the stop, more particularly to a control fork for this stop.
  • the fixed part in rotation of the housing comprises an annular plate interposed between rollers, forming the rolling elements, and a shoulder, formed on the support, for the axial support of the fixed part in rotation of the housing on the support.
  • the fixed rotating track is delimited by a first face of the annular plate.
  • the support shoulder, formed on the support cooperates with a radially internal part of the second face of the annular plate (this second face is opposite to the fixed rolling track in rotation).
  • the sealing means described in GB-A-1 101 035 comprise first and second annular members cooperating respectively with the first and second faces of the annular plate forming the fixed part in rotation of the housing. More particularly, the second sealing member is in contact with a part of the second face of the annular plate which is radially external relative to the part of this second face in contact with the bearing shoulder formed on the support.
  • the invention particularly aims to optimize, on the one hand, the support on the support of the stationary part in rotation of the housing and, on the other hand, the axial size of this housing.
  • the subject of the invention is a clutch control stopper, of the aforementioned type, characterized in that the sealing means are placed in a geometric half-space delimited by a plane substantially perpendicular to an axis of revolution of the housing, the fixed rotating track extending outside this half-space or coinciding with the plane delimiting this half-space.
  • the rolling elements comprise rollers distributed in at least one ring around the axis of revolution of the housing, the axis of each roller being substantially perpendicular to the axis of revolution of the housing, the raceways fixed in rotation and rotary being substantially planar and perpendicular to the axis of revolution of the housing;
  • rollers are distributed in at least two concentric rings
  • the sealing means comprise two annular seals respectively radially internal and external;
  • the rolling elements are carried by a cage which is mounted with a radial clearance in the housing, in particular a radial clearance greater than 1 mm;
  • the control stop comprises means for radial and axial pre-positioning of the cage in the housing, integral with one of the raceways; - The cage is mounted with a radial clearance in the prepositioning means;
  • the rotary part of the housing is mounted with a radial clearance relative to the fixed part in rotation of this housing;
  • the housing is carried by a fixed rotating support, of generally annular shape, preferably intended to connect this housing to means for controlling the stop;
  • the annular support is provided with a flange against which the fixed part in rotation of the housing is held in abutment;
  • the control stop comprises elastic clamping means of the housing against the support flange;
  • the housing is mounted with a radial clearance on the annular support; - The housing is mounted without radial clearance on the annular support;
  • the rotary part of the housing is provided with two axial ends called proximal and distal, the rotary raceway being integral with the proximal end of the rotary part of the housing;
  • the proximal and distal ends of the rotating part of the housing are attached to each other or come integrally with each other;
  • the fixed rotating track is integral with the fixed rotating part of the housing
  • the fixed rotating track is formed on an annular plate interposed between the rolling elements and the fixed rotating part of the housing;
  • the fixed part in rotation of the housing is delimited by a body provided with a transverse wall delimiting the fixed raceway in rotation or forming a support for this fixed raceway in rotation;
  • a cover is attached to the body, the external seal being inserted axially between transverse walls of the cover and of the rotary part of the housing;
  • the external seal is integral with the body and cooperates with a transverse wall of the rotary part of the housing;
  • the fixed rotating track is formed on an annular plate forming the body of the fixed rotating part of the housing;
  • the internal seal is integral with the body and cooperates with a transverse or axial wall of the rotary part of the housing;
  • the internal seal is integral with the rotary part of the housing and cooperates with an axial or transverse wall of the body;
  • the annular plate forming the body is attached to the annular support, preferably by crimping;
  • the internal seal is integral with the rotary part of the housing, the internal seal being inserted radially between two axial walls of the annular support and of the rotary part of the housing, the axial wall of the annular support in contact with this internal seal being coated with a metal ring forming a bearing surface;
  • the internal seal is integral with the rotary part of the housing, the internal seal being interposed between an axial wall of the annular support and a transverse wall of the rotary part of the housing, the transverse wall of the support annular in contact with this internal seal being coated with a metal ring forming a bearing surface.
  • FIGS. 1 to 7 are views in axial section of a control stop d 'clutch according to respectively seven embodiments of the invention.
  • control stop 10 is intended, preferably, to equip a clutch mechanism coupling a shaft output of an internal combustion engine of a motor vehicle with a primary gearbox shaft.
  • the control stop 10 is intended to cooperate with the radially internal part of a diaphragm 12 of the clutch mechanism.
  • the control stop 10 comprises rolling means 14 housed in a housing 16, of generally annular shape. An axis X of revolution of the housing 16 is shown in FIG. 1.
  • the housing 16 is delimited by two substantially coaxial parts, respectively rotary 18 and fixed in rotation 20.
  • the rotary part 18 is preferably metallic.
  • Sealing means intended in particular to retain a lubricant contained in the housing 16, are interposed between the rotary 18 and rotationally fixed parts 20 of the housing 16. These sealing means preferably comprise two respectively radially internal annular seals 22 and external 24.
  • the rolling means 14 comprise rolling elements 26 in contact with two opposite rolling paths, respectively rotary CR and fixed in rotation CF.
  • the rolling elements consist of rollers 26 distributed in at least one ring around the axis of revolution X of the housing 16.
  • the axis of each roller 26 is substantially perpendicular to the axis of revolution X.
  • the CR and fixed rotation tracks CF are substantially planar and perpendicular to the axis of revolution X.
  • the housing 16 is carried by a support 28 fixed in rotation.
  • This support 28, of generally annular shape, is intended to connect the housing 16 to means for controlling the stop.
  • these control means comprise a conventional fork 30 shown in phantom in Figure 1.
  • the means of control could include hydraulic means such as a cylinder piston mounted concentric with the axis of revolution X.
  • proximal an element axially close to the fork 30 (axially distant from the diaphragm 12) and distal an element axially distant from the fork 30 (axially close to the diaphragm 12).
  • the annular support 28 is slidably mounted axially (substantially parallel to the axis of revolution X which roughly coincides with an axis of revolution of the diaphragm 12) on a tubular fixed guide 32 secured, for example, to a clutch bell .
  • the annular support 28 is provided with a flange 34, extending radially outwards from the support 28, separating two axial ends 28P and distal 28D respectively of the support.
  • the proximal end 28P of the annular support comprises an annular metal gutter 36 in which the fork 30 is fitted.
  • the gutter 36 therefore connects the annular support 28 to the fork 30.
  • the rest of the annular support 28 is preferably made of plastic.
  • the rotary part 18 of the housing 16 is provided with two axial ends called proximal 18P and distal 18D. These ends 18P, 18D form flanges of the rotary part 18. The distal end 18D bears on the diaphragm 12.
  • the rotary raceway CR is integral with the proximal end 18P of the rotary part 18 of the housing. More particularly, the rotary raceway CR forms a face of the end 18P.
  • the proximal 18P and distal 18D ends of the rotary part 18 of the housing 16 have come integrally with one another.
  • the fixed rotating part 20 of the housing 16 is delimited by a body 38), having a general shape of revolution, on which a cover 40 is attached, for example by crimping.
  • the fixed rolling track CF is formed on an annular plate 42 interposed between the rolling elements 26 and a transverse wall 38T of the body 38.
  • the wall 38T therefore forms a support for the annular plate 42 and the fixed raceway in rotation CF.
  • the housing 16 is held in abutment against a distal face 34D of the flange using elastic clamping means 44.
  • the elastic clamping means 44 cooperate, for example, with the external contour of the flange 34 and the cover 40 so as to keep the fixed part in support rotation 20 of the housing against the flange 34. It will be noted that the clamping means 44 allow a radial clearance of the housing 16 relative to the annular support 28.
  • the internal seal 22, of a conventional type, for example made of elastomer, is integral with the rotary part 18 of the housing 16 and cooperates with an axial wall, radially internal, 381 of the body 38 .
  • the external seal 24 of a conventional type for example made of elastomer, is interposed axially between a transverse wall 40T of the cover and the proximal end 18P of the rotary part of the housing forming a transverse wall opposite the wall 40T.
  • the external seal 24 is centered relative to the axis X by means of a shoulder E formed in the cover 40.
  • the rolling elements 26 are carried by a cage 46 which is mounted with a radial clearance in the housing 16, in particular a radial clearance greater than 1mm.
  • the cage 46 is pre-positioned, during the mounting of the rolling means 14 in the housing 16, using an annular member 48 forming means for radial and axial prepositioning of the cage 46 in the housing 16.
  • the member 48 for radial and axial prepositioning is for example crimped on the proximal end 18P of the rotary part 18 of the housing so as to be integral with the rotary raceway CR. It will be noted that the cage 46 is mounted with a radial clearance, for example of about 1 mm, in the pre-positioning member 48.
  • the rotary part 18 of the housing is mounted with a radial clearance, for example of approximately 1 mm, relative to the fixed part in rotation 20 of the housing 16.
  • the fixed rotating track CF extends outside this half-space or coincides with the plane delimiting this half-space.
  • FIG. 1 A half-space F and a plane P corresponding to the definition above are shown in FIG. 1 .
  • Figures 2 to 7 show the second to seventh embodiments of the invention. In these figures, elements similar to those of Figure 1 are designated by identical references.
  • the proximal 18P and distal 18D ends of the rotary part of the housing 16 are attached to each other. More particularly, the proximal 18P and distal 18D ends are provided with complementary toothing 50 connecting the two parts 18P, 18D in rotation with one another.
  • the internal seal 22 is integral with the radially internal axial wall 38I of the body of the housing.
  • the internal seal 22 cooperates with a transverse wall forming a radially internal extension 181 of a connection part of the distal end 18D with the proximal end 18P of the rotary part 18.
  • the internal 22 and external 24 seals are of the lip type.
  • the housing 16 of the control stop 10 does not include a cover.
  • the external seal 24 is integral with the body 38 of the housing 16. More particularly the internal 22 and external 24 seals are fixed by snap-fastening respectively to the radially internal axial wall 38I of the body and to a radially external axial wall 38E of this body. The internal 22 and external 24 seals cooperate respectively with the two transverse walls of the rotary part 18 of the housing formed by the proximal end 18P and the internal extension 181 of this part 18.
  • the fixed rolling track CF is formed directly on the transverse wall 38T of the body of the housing.
  • the fixed rotating track CF is integral with the fixed rotating part 20 of the housing. If necessary, the surface of the transverse wall 38T of the housing body, delimiting the fixed raceway in rotation CF, is treated in an appropriate manner.
  • the housing 16, containing the rolling means 14, forms a module which can be advantageously pre-assembled and then mounted on the support 28.
  • the lubricant can be incorporated into the housing 16 before mounting the module on the annular support 28.
  • the module, closed by the two seals, is clean and easy to handle. If necessary, the module can be subjected to tests and / or running-in before it is mounted on the annular support 28.
  • the proximal ends 18P and distal 18D of the rotary part 18 of the housing 16 have come integrally with one another.
  • the fixed rotating part 20 of the housing is delimited by, in addition to the bodies 38 and cover 40, the support 28. More particularly, in the embodiments shown in FIGS. 5 and 6, the internal seal 22 is interposed radially between two axial annular walls of the rotary part 18 of the housing and of the support 28. The internal seal 22 is integral with the rotary part 18 of the housing. The axial wall of the support 28 in contact with this internal seal 22 is coated with a metal ring 52, forming a bearing surface, optimizing the sliding of the seal 22 on the support 28.
  • the body 38 of the fixed rotating part 20 of the housing is formed by an annular plate.
  • the fixed rolling track CF is formed on this annular plate. In fact, the fixed rolling track CF rotates a distal face of the annular plate delimiting the body 38.
  • the axial and radial pre-positioning member 48 of the cage 46 does not exist.
  • the cover 40 centers the cage 46.
  • rollers 26 have smaller axial dimensions than in the previous embodiments and are distributed in at least two concentric rings. Thus, the friction of the rollers 26 on the corresponding raceways CR, CF are reduced.
  • the housing 16 is mounted without radial clearance on the annular support 28, the latter not having a flange 34.
  • the annular plate forming the body 38 of the fixed rotating part 20 of the housing is attached to the annular support 28, preferably by crimping.
  • the member 48 for radial and axial pre-positioning of the cage 46 is fixed, for example by crimping, to the annular plate forming the body 38 of the housing.
  • the pre-positioning member 48 is integral with the fixed raceway in rotation CF. It will be noted that the member 48 for radial and axial pre-positioning is fixed to the annular plate delimiting the body 38 by being interposed between this annular plate 38 and the cover 40.
  • the seventh embodiment of the invention shown in Figure 7 is close to the fifth embodiment.
  • the internal seal 22, integral with the rotary part 18 of the housing 16 is interposed between an axial annular wall of the rotary part 18 of the housing
  • this transverse wall, in contact with the internal seal 22, is coated with a metal ring 54 provided with a face, forming a bearing surface, optimizing the sliding of the seal 22 on the support 28 .
  • the internal seal 22 is provided with a metal frame 22A.
  • the internal seal 22 could be integral with the part of the support 28 delimiting the body 38 and cooperate with an axial wall of the rotary part 18 of the housing 16.
  • the seal 22 is in sliding contact with the rotary part 18 metal which avoids adding a metal ring to form the bearing surface of the seal 22.
  • the seals 22, 24 cooperate with a transverse plane wall or an axial annular wall.
  • the flexibility of the seals 22, 24 allows self-centering of the control stop 10 by relative radial displacement of the elements concerned with this stop.
  • a seal 22, 24 can be linked to its support by adhesion of the surfaces in contact with the seal and the support.
  • the position of the seals 22, 24 can be adapted to the amount of lubricant

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

The invention relates to a control release bearing consisting of bearing means (14) comprising bearing elements (26) which are in contact with two opposing raceways, namely one rotating raceway (CR) and one raceway which is fixed in rotation (CF). According to the invention, the bearing means (14) are housed in an essentially-circular casing (16) which is defined by two essentially-coaxial parts, namely one rotating part (18) and one part which is fixed in rotation (20). Sealing means (22, 24) are disposed between the aforementioned parts and are intended to retain lubricant contained in the casing (16). Moreover, said sealing means (22, 24) are placed in a geometric half-space (F) which is defined by a plane (P) that is essentially perpendicular to an axis of revolution (X) of the casing (16). The above-mentioned non-rotating raceway (CF) extends outside the half-space (F) or coincides with the plane (P) defining said space (F).

Description

Butée de commande d'embrayage perfectionnée. Improved clutch control bearing.
La présente invention concerne une butée de commande d'embrayage perfectionnée, notamment pour véhicule automobile. On connaît déjà dans l'état de la technique, notamment d'après GB-A-1 101The present invention relates to an improved clutch control stop, in particular for a motor vehicle. We already know in the prior art, in particular from GB-A-1 101
035, une butée de commande d'embrayage, du type comprenant des moyens de roulement comportant des éléments de roulement en contact avec deux chemins de roulement opposés, respectivement rotatif et fixe en rotation, ces moyens de roulement étant logés dans un boîtier, de forme générale annulaire, délimité par deux parties sensiblement coaxiales, respectivement rotative et fixe en rotation, entre lesquelles sont intercalés des moyens d'étanchéité destinés à retenir un lubrifiant contenu dans le boîtier.035, a clutch control stop, of the type comprising rolling means comprising rolling elements in contact with two opposite rolling tracks, respectively rotary and fixed in rotation, these rolling means being housed in a housing, of form general annular, delimited by two substantially coaxial parts, respectively rotary and fixed in rotation, between which are inserted sealing means intended to retain a lubricant contained in the housing.
Le boîtier décrit dans GB-A-1 101 035 est porté par un support fixe en rotation, de forme générale annulaire. Ce support est destiné à relier le boîtier à des moyens de commande de la butée, plus particulièrement à une fourchette de commande de cette butée. La partie fixe en rotation du boîtier comporte une plaque annulaire intercalée entre des rouleaux, formant les éléments de roulement, et un épaulement, ménagé sur le support, pour l'appui axial de la partie fixe en rotation du boîtier sur le support. Le chemin de roulement fixe en rotation est délimité par une première face de la plaque annulaire. L'épaulement d'appui, ménagé sur le support, coopère avec une partie radialement interne de la seconde face de la plaque annulaire (cette seconde face est opposée au chemin de roulement fixe en rotation).The housing described in GB-A-1 101 035 is carried by a fixed rotating support, of generally annular shape. This support is intended to connect the housing to means for controlling the stop, more particularly to a control fork for this stop. The fixed part in rotation of the housing comprises an annular plate interposed between rollers, forming the rolling elements, and a shoulder, formed on the support, for the axial support of the fixed part in rotation of the housing on the support. The fixed rotating track is delimited by a first face of the annular plate. The support shoulder, formed on the support, cooperates with a radially internal part of the second face of the annular plate (this second face is opposite to the fixed rolling track in rotation).
Les moyens d'étanchéité décrits dans GB-A-1 101 035 comprennent des premier et second organes annulaires coopérant respectivement avec les première et seconde faces de la plaque annulaire formant la partie fixe en rotation du boîtier. Plus particulièrement, le second organe d'étanchéité est en contact avec une partie de la seconde face de la plaque annulaire qui est radialement externe par rapport à la partie de cette seconde face en contact avec l'épaulement d'appui ménagé sur le support.The sealing means described in GB-A-1 101 035 comprise first and second annular members cooperating respectively with the first and second faces of the annular plate forming the fixed part in rotation of the housing. More particularly, the second sealing member is in contact with a part of the second face of the annular plate which is radially external relative to the part of this second face in contact with the bearing shoulder formed on the support.
La présence du second organe d'étanchéité en contact avec la seconde face de la plaque annulaire, d'une part, limite la dimension radiale de la partie de cette seconde face en appui contre le support et, d'autre part, augmente l'encombrement axial du boîtier.The presence of the second sealing member in contact with the second face of the annular plate, on the one hand, limits the radial dimension of the part of this second face bearing against the support and, on the other hand, increases the axial size of the housing.
L'invention a notamment pour but d'optimiser, d'une part, l'appui sur le support de la partie fixe en rotation du boîtier et, d'autre part, l'encombrement axial de ce boîtier. A cet effet, l'invention a pour objet une butée de commande d'embrayage, du type précité, caractérisée en ce que les moyens d'étanchéité sont placés dans un demi- espace géométrique délimité par un plan sensiblement perpendiculaire à un axe de révolution du boîtier, le chemin de roulement fixe en rotation s'étendant à l'extérieur de ce demi-espace ou coïncidant avec le plan délimitant ce demi-espace.The invention particularly aims to optimize, on the one hand, the support on the support of the stationary part in rotation of the housing and, on the other hand, the axial size of this housing. To this end, the subject of the invention is a clutch control stopper, of the aforementioned type, characterized in that the sealing means are placed in a geometric half-space delimited by a plane substantially perpendicular to an axis of revolution of the housing, the fixed rotating track extending outside this half-space or coinciding with the plane delimiting this half-space.
Du fait que le chemin de roulement fixe en rotation s'étend à l'extérieur du demi-espace contenant tous les moyens d'étanchéité entre les deux parties du boîtier respectivement rotative et fixe en rotation, ou coïncide avec le plan délimitant ce demi- espace, l'encombrement axial du boîtier est réduit et il est possible de placer la partie fixe en rotation du boîtier en appui axial sur un support sans être gênés par un organe d'étanchéité du boîtier intercalé entre le chemin de roulement fixe en rotation et le support. Suivant des caractéristiques optionnelles de différents modes de réalisation de cette butée de commande :The fact that the fixed rotating track extends outside the half-space containing all the sealing means between the two parts of the housing respectively rotary and fixed in rotation, or coincides with the plane delimiting this half space, the axial space requirement of the housing is reduced and it is possible to place the stationary part in rotation of the housing in axial support on a support without being hindered by a sealing member of the housing interposed between the rolling raceway and the support. According to optional characteristics of different embodiments of this control stop:
- les éléments de roulement comprennent des rouleaux répartis en au moins une couronne autour de l'axe de révolution du boîtier, l'axe de chaque rouleau étant sensiblement perpendiculaire à l'axe de révolution du boîtier, les chemins de roulement fixe en rotation et rotatif étant sensiblement plans et perpendiculaires à l'axe de révolution du boîtier ;the rolling elements comprise rollers distributed in at least one ring around the axis of revolution of the housing, the axis of each roller being substantially perpendicular to the axis of revolution of the housing, the raceways fixed in rotation and rotary being substantially planar and perpendicular to the axis of revolution of the housing;
- les rouleaux sont répartis en au moins deux couronnes concentriques ;- the rollers are distributed in at least two concentric rings;
- les moyens d'étanchéité comprennent deux joints annulaires respectivement radialement interne et externe ; - les éléments de roulement sont portés par une cage qui est montée avec un jeu radial dans le boîtier, notamment un jeu radial supérieur à 1 mm ;- The sealing means comprise two annular seals respectively radially internal and external; - The rolling elements are carried by a cage which is mounted with a radial clearance in the housing, in particular a radial clearance greater than 1 mm;
- la butée de commande comprend des moyens de pré-positionnement radial et axial de la cage dans le boîtier, solidaires de l'un des chemins de roulement ; - la cage est montée avec un jeu radial dans les moyens de prépositionnement ;- The control stop comprises means for radial and axial pre-positioning of the cage in the housing, integral with one of the raceways; - The cage is mounted with a radial clearance in the prepositioning means;
- la partie rotative du boîtier est montée avec un jeu radial par rapport à la partie fixe en rotation de ce boîtier ;- The rotary part of the housing is mounted with a radial clearance relative to the fixed part in rotation of this housing;
- le boîtier est porté par un support fixe en rotation, de forme générale annulaire, destiné de préférence à relier ce boîtier à des moyens de commande de la butée ;- The housing is carried by a fixed rotating support, of generally annular shape, preferably intended to connect this housing to means for controlling the stop;
- le support annulaire est muni d'un flasque contre lequel la partie fixe en rotation du boîtier est maintenue en appui ;- The annular support is provided with a flange against which the fixed part in rotation of the housing is held in abutment;
- la butée de commande comprend des moyens de serrage élastique du boîtier contre le flasque d'appui ;- The control stop comprises elastic clamping means of the housing against the support flange;
- le boîtier est monté avec un jeu radial sur le support annulaire ; - le boîtier est monté sans jeu radial sur le support annulaire ;- The housing is mounted with a radial clearance on the annular support; - The housing is mounted without radial clearance on the annular support;
- la partie rotative du boîtier est munie de deux extrémités axiales dites proximale et distale, le chemin de roulement rotatif étant solidaire de l'extrémité proximale de la partie rotative du boîtier ; - les extrémités proximale et distale de la partie rotative du boîtier sont rapportées l'une sur l'autre ou venues de matière l'une avec l'autre ;- The rotary part of the housing is provided with two axial ends called proximal and distal, the rotary raceway being integral with the proximal end of the rotary part of the housing; - The proximal and distal ends of the rotating part of the housing are attached to each other or come integrally with each other;
- le chemin de roulement fixe en rotation est solidaire de la partie fixe en rotation du boîtier ;- The fixed rotating track is integral with the fixed rotating part of the housing;
- le chemin de roulement fixe en rotation est ménagé sur une plaque annulaire intercalée entre les éléments de roulement et la partie fixe en rotation du boîtier ;- The fixed rotating track is formed on an annular plate interposed between the rolling elements and the fixed rotating part of the housing;
- la partie fixe en rotation du boîtier est délimitée par un corps muni d'une paroi transversale délimitant le chemin de roulement fixe en rotation ou formant appui pour ce chemin de roulement fixe en rotation ; - un capot est rapporté sur le corps, le joint externe étant intercalé axialement entre des parois transversales du capot et de la partie rotative du boîtier ;- The fixed part in rotation of the housing is delimited by a body provided with a transverse wall delimiting the fixed raceway in rotation or forming a support for this fixed raceway in rotation; - A cover is attached to the body, the external seal being inserted axially between transverse walls of the cover and of the rotary part of the housing;
- le joint externe est solidaire du corps et coopère avec une paroi transversale de la partie rotative du boîtier ; - le chemin de roulement fixe en rotation est ménagé sur une plaque annulaire formant le corps de la partie fixe en rotation du boîtier ;- The external seal is integral with the body and cooperates with a transverse wall of the rotary part of the housing; - The fixed rotating track is formed on an annular plate forming the body of the fixed rotating part of the housing;
- le joint interne est solidaire du corps et coopère avec une paroi transversale ou axiale de la partie rotative du boîtier ;- The internal seal is integral with the body and cooperates with a transverse or axial wall of the rotary part of the housing;
- le joint interne est solidaire de la partie rotative du boîtier et coopère avec une paroi axiale ou transversale du corps ;- The internal seal is integral with the rotary part of the housing and cooperates with an axial or transverse wall of the body;
- la plaque annulaire formant le corps est rapportée sur le support annulaire, de préférence par sertissage ;- The annular plate forming the body is attached to the annular support, preferably by crimping;
- la partie fixe en rotation du boîtier est délimitée par le support annulaire ;- The fixed rotating part of the housing is delimited by the annular support;
- le joint interne est solidaire de la partie rotative du boîtier, le joint interne étant intercalé radialement entre deux parois axiales du support annulaire et de la partie rotative du boîtier, la paroi axiale du support annulaire en contact avec ce joint interne étant revêtue d'une bague métallique formant surface de portée ;the internal seal is integral with the rotary part of the housing, the internal seal being inserted radially between two axial walls of the annular support and of the rotary part of the housing, the axial wall of the annular support in contact with this internal seal being coated with a metal ring forming a bearing surface;
- le joint interne est solidaire de la partie rotative du boîtier, le joint interne étant intercalé entre une paroi axiale du support annulaire et une paroi transversale de la partie rotative du boîtier, la paroi transversale du support annulaire en contact avec ce joint interne étant revêtue d'une bague métallique formant surface de portée.the internal seal is integral with the rotary part of the housing, the internal seal being interposed between an axial wall of the annular support and a transverse wall of the rotary part of the housing, the transverse wall of the support annular in contact with this internal seal being coated with a metal ring forming a bearing surface.
L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins dans lesquels les figures 1 à 7 sont des vues en coupe axiale d'une butée de commande d'embrayage selon respectivement sept modes de réalisation de l'invention.The invention will be better understood on reading the description which follows, given solely by way of example and made with reference to the drawings in which FIGS. 1 to 7 are views in axial section of a control stop d 'clutch according to respectively seven embodiments of the invention.
On a représenté sur la figure 1 une butée de commande selon un premier mode de réalisation de l'invention, désignée par la référence générale 10. Cette butée de commande 10 est destinée, de préférence, à équiper un mécanisme d'embrayage couplant un arbre de sortie d'un moteur à combustion interne d'un véhicule automobile avec un arbre primaire de boîte de vitesses.There is shown in Figure 1 a control stop according to a first embodiment of the invention, designated by the general reference 10. This control stop 10 is intended, preferably, to equip a clutch mechanism coupling a shaft output of an internal combustion engine of a motor vehicle with a primary gearbox shaft.
La butée de commande 10 est destinée à coopérer avec la partie radialement interne d'un diaphragme 12 du mécanisme d'embrayage.The control stop 10 is intended to cooperate with the radially internal part of a diaphragm 12 of the clutch mechanism.
La butée de commande 10 comprend des moyens de roulement 14 logés dans un boîtier 16, de forme générale annulaire. Un axe X de révolution du boîtier 16 est représenté sur la figure 1.The control stop 10 comprises rolling means 14 housed in a housing 16, of generally annular shape. An axis X of revolution of the housing 16 is shown in FIG. 1.
Le boîtier 16 est délimité par deux parties sensiblement coaxiales, respectivement rotative 18 et fixe en rotation 20. La partie rotative 18 est de préférence métallique. Des moyens d'étanchéité, destinés notamment à retenir un lubrifiant contenu dans le boîtier 16, sont intercalés entre les parties rotative 18 et fixe en rotation 20 du boîtier 16. Ces moyens d'étanchéité comprennent, de préférence, deux joints annulaires respectivement radialement interne 22 et externe 24.The housing 16 is delimited by two substantially coaxial parts, respectively rotary 18 and fixed in rotation 20. The rotary part 18 is preferably metallic. Sealing means, intended in particular to retain a lubricant contained in the housing 16, are interposed between the rotary 18 and rotationally fixed parts 20 of the housing 16. These sealing means preferably comprise two respectively radially internal annular seals 22 and external 24.
Les moyens de roulement 14 comportent des éléments de roulement 26 en contact avec deux chemins de roulement opposés, respectivement rotatif CR et fixe en rotation CF.The rolling means 14 comprise rolling elements 26 in contact with two opposite rolling paths, respectively rotary CR and fixed in rotation CF.
De préférence, les éléments de roulement sont constitués par des rouleaux 26 répartis en au moins une couronne autour de l'axe de révolution X du boîtier 16. L'axe de chaque rouleau 26 est sensiblement perpendiculaire à l'axe de révolution X. Les chemins de roulement rotatif CR et fixe en rotation CF sont sensiblement plans et perpendiculaires à l'axe de révolution X.Preferably, the rolling elements consist of rollers 26 distributed in at least one ring around the axis of revolution X of the housing 16. The axis of each roller 26 is substantially perpendicular to the axis of revolution X. The CR and fixed rotation tracks CF are substantially planar and perpendicular to the axis of revolution X.
Le boîtier 16 est porté par un support 28 fixe en rotation. Ce support 28, de forme générale annulaire, est destiné à relier le boîtier 16 à des moyens de commande de la butée. Dans l'exemple décrit, ces moyens de commande comprennent une fourchette classique 30 représentée en traits mixtes sur la figure 1. En variante, les moyens de commande pourraient comprendre des moyens hydrauliques tels qu'un piston de vérin monté concentrique avec l'axe de révolution X.The housing 16 is carried by a support 28 fixed in rotation. This support 28, of generally annular shape, is intended to connect the housing 16 to means for controlling the stop. In the example described, these control means comprise a conventional fork 30 shown in phantom in Figure 1. Alternatively, the means of control could include hydraulic means such as a cylinder piston mounted concentric with the axis of revolution X.
Dans ce qui suit, on qualifiera de "proximal" un élément proche axialement de la fourchette 30 (éloigné axialement du diaphragme 12) et de "distal" un élément éloigné axialement de la fourchette 30 (proche axialement du diaphragme 12).In what follows, we will qualify as "proximal" an element axially close to the fork 30 (axially distant from the diaphragm 12) and "distal" an element axially distant from the fork 30 (axially close to the diaphragm 12).
Le support annulaire 28 est monté coulissant axialement (sensiblement parallèlement à l'axe de révolution X qui coïncide à peu près avec un axe de révolution du diaphragme 12) sur un guide fixe tubulaire 32 solidaire, par exemple, d'une cloche d'embrayage. Le support annulaire 28 est muni d'un flasque 34, s'étendant radialement vers l'extérieur du support 28, séparant deux extrémités axiales respectivement proximale 28P et distale 28D du support.The annular support 28 is slidably mounted axially (substantially parallel to the axis of revolution X which roughly coincides with an axis of revolution of the diaphragm 12) on a tubular fixed guide 32 secured, for example, to a clutch bell . The annular support 28 is provided with a flange 34, extending radially outwards from the support 28, separating two axial ends 28P and distal 28D respectively of the support.
L'extrémité proximale 28P du support annulaire comporte une gouttière métallique annulaire 36 dans laquelle est emboîtée la fourchette 30. La gouttière 36 relie donc le support annulaire 28 à la fourchette 30. Mis à part la gouttière métallique 36, le reste du support annulaire 28 est de préférence en plastique.The proximal end 28P of the annular support comprises an annular metal gutter 36 in which the fork 30 is fitted. The gutter 36 therefore connects the annular support 28 to the fork 30. Aside from the metal gutter 36, the rest of the annular support 28 is preferably made of plastic.
La partie rotative 18 du boîtier 16 est munie de deux extrémités axiales dites proximale 18P et distale 18D. Ces extrémités 18P, 18D forment des collerettes de la partie rotative 18. L'extrémité distale 18D est en appui sur le diaphragme 12. Le chemin de roulement rotatif CR est solidaire de l'extrémité proximale 18P de la partie rotative 18 du boîtier. Plus particulièrement, le chemin de roulement rotatif CR forme une face de l'extrémité 18P.The rotary part 18 of the housing 16 is provided with two axial ends called proximal 18P and distal 18D. These ends 18P, 18D form flanges of the rotary part 18. The distal end 18D bears on the diaphragm 12. The rotary raceway CR is integral with the proximal end 18P of the rotary part 18 of the housing. More particularly, the rotary raceway CR forms a face of the end 18P.
Dans le premier mode de réalisation de l'invention représenté sur la figure 1, les extrémités proximale 18P et distale 18D de la partie rotative 18 du boîtier 16 sont venues de matière l'une avec l'autre.In the first embodiment of the invention shown in FIG. 1, the proximal 18P and distal 18D ends of the rotary part 18 of the housing 16 have come integrally with one another.
La partie fixe en rotation 20 du boîtier 16 est délimitée par un corps 38), ayant une forme générale de révolution, sur lequel est rapporté un capot 40, par exemple par sertissage.The fixed rotating part 20 of the housing 16 is delimited by a body 38), having a general shape of revolution, on which a cover 40 is attached, for example by crimping.
Dans le premier mode de réalisation de l'invention, le chemin de roulement fixe en rotation CF est ménagé sur une plaque annulaire 42 intercalée entre les éléments de roulement 26 et une paroi transversale 38T du corps 38. La paroi 38T forme donc un appui pour la plaque annulaire 42 et le chemin de roulement fixe en rotation CF.In the first embodiment of the invention, the fixed rolling track CF is formed on an annular plate 42 interposed between the rolling elements 26 and a transverse wall 38T of the body 38. The wall 38T therefore forms a support for the annular plate 42 and the fixed raceway in rotation CF.
Le boîtier 16 est maintenu en appui contre une face distale 34D du flasque à l'aide de moyens de serrage élastique 44. Les moyens de serrage élastique 44 coopèrent, par exemple, avec le contour externe du flasque 34 et le capot 40 de façon à maintenir en appui la partie fixe en rotation 20 du boîtier contre le flasque 34. On notera que les moyens de serrage 44 autorisent un jeu radial du boîtier 16 par rapport au support annulaire 28.The housing 16 is held in abutment against a distal face 34D of the flange using elastic clamping means 44. The elastic clamping means 44 cooperate, for example, with the external contour of the flange 34 and the cover 40 so as to keep the fixed part in support rotation 20 of the housing against the flange 34. It will be noted that the clamping means 44 allow a radial clearance of the housing 16 relative to the annular support 28.
Dans le premier mode de réalisation de l'invention, le joint interne 22, d'un type classique par exemple en élastomère, est solidaire de la partie rotative 18 du boîtier 16 et coopère avec une paroi axiale, radialement interne, 381 du corps 38.In the first embodiment of the invention, the internal seal 22, of a conventional type, for example made of elastomer, is integral with the rotary part 18 of the housing 16 and cooperates with an axial wall, radially internal, 381 of the body 38 .
Le joint externe 24, d'un type classique par exemple en élastomère, est intercalé axialement entre une paroi transversale 40T du capot et l'extrémité proximale 18P de la partie rotative du boîtier formant une paroi transversale en vis-à-vis de la paroi 40T. De préférence, le joint externe 24 est centré par rapport à l'axe X à l'aide d'un épaulement E ménagé dans le capot 40.The external seal 24, of a conventional type for example made of elastomer, is interposed axially between a transverse wall 40T of the cover and the proximal end 18P of the rotary part of the housing forming a transverse wall opposite the wall 40T. Preferably, the external seal 24 is centered relative to the axis X by means of a shoulder E formed in the cover 40.
Les éléments de roulement 26 sont portés par une cage 46 qui est montée avec un jeu radial dans le boîtier 16, notamment un jeu radial supérieur à 1mm. De préférence, la cage 46 est pré-positionnée, lors du montage des moyens de roulement 14 dans le boîtier 16, à l'aide d'un organe annulaire 48 formant moyens de prépositionnement radial et axial de la cage 46 dans le boîtier 16.The rolling elements 26 are carried by a cage 46 which is mounted with a radial clearance in the housing 16, in particular a radial clearance greater than 1mm. Preferably, the cage 46 is pre-positioned, during the mounting of the rolling means 14 in the housing 16, using an annular member 48 forming means for radial and axial prepositioning of the cage 46 in the housing 16.
Dans le premier mode de réalisation de l'invention, l'organe 48 de prépositionnement radial et axial est par exemple serti sur l'extrémité proximale 18P de la partie rotative 18 du boîtier de façon à être solidaire du chemin de roulement rotatif CR. On notera que la cage 46 est montée avec un jeu radial, par exemple d'environ 1 mm, dans l'organe de pré-positionnement 48.In the first embodiment of the invention, the member 48 for radial and axial prepositioning is for example crimped on the proximal end 18P of the rotary part 18 of the housing so as to be integral with the rotary raceway CR. It will be noted that the cage 46 is mounted with a radial clearance, for example of about 1 mm, in the pre-positioning member 48.
Par ailleurs, la partie rotative 18 du boîtier est montée avec un jeu radial, par exemple d'environ 1 mm, par rapport à la partie fixe en rotation 20 du boîtier 16.Furthermore, the rotary part 18 of the housing is mounted with a radial clearance, for example of approximately 1 mm, relative to the fixed part in rotation 20 of the housing 16.
Les différents jeux radiaux décrits ci-dessus permettent un auto-centrage de la butée de commande 10 pour le rattrapage éventuel d'un défaut d'alignement de l'arbre de sortie du moteur et de l'arbre primaire de boîte de vitesses.The different radial clearances described above allow self-centering of the control stop 10 for possible compensation of a misalignment of the output shaft of the engine and of the primary gearbox shaft.
On notera qu'il existe un demi-espace géométrique délimité par un plan sensiblement perpendiculaire à l'axe de révolution X tel que :It will be noted that there exists a geometric half-space delimited by a plane substantially perpendicular to the axis of revolution X such that:
- les joints d'étanchéité interne 22 et externe 24 sont placés dans ce demi- espace, etthe internal 22 and external 24 seals are placed in this half-space, and
- le chemin de roulement fixe en rotation CF s'étend à l'extérieur de ce demi- espace ou coïncide avec le plan délimitant ce demi-espace.- The fixed rotating track CF extends outside this half-space or coincides with the plane delimiting this half-space.
Grâce à cet agencement, aucun élément d'étanchéité ne limite la dimension radiale des surfaces d'appui du support 28 et du corps 38. Un demi-espace F et un plan P correspondant à la définition ci-dessus sont représentés sur la figure 1. On a représenté sur les figures 2 à 7 des deuxième à septième modes de réalisation de l'invention. Sur ces figures, les éléments analogues à ceux de la figure 1 sont désignés par des références identiques.Thanks to this arrangement, no sealing element limits the radial dimension of the bearing surfaces of the support 28 and of the body 38. A half-space F and a plane P corresponding to the definition above are shown in FIG. 1 . Figures 2 to 7 show the second to seventh embodiments of the invention. In these figures, elements similar to those of Figure 1 are designated by identical references.
On notera que sur les figures 2 à 7, le guide tubulaire 32 n'est pas représenté. De plus, sur les figures 2 à 4, le support annulaire 28 n'est pas représenté.Note that in Figures 2 to 7, the tubular guide 32 is not shown. In addition, in Figures 2 to 4, the annular support 28 is not shown.
Dans les deuxième à quatrième modes de réalisation de l'invention, représentés sur les figures 2 à 4, les extrémités proximale 18P et distale 18D de la partie rotative du boîtier 16 sont rapportées l'une sur l'autre. Plus particulièrement, les extrémités proximale 18P et distale 18D sont munies de dentures complémentaires 50 liant les deux parties 18P, 18D en rotation l'une avec l'autre.In the second to fourth embodiments of the invention, shown in FIGS. 2 to 4, the proximal 18P and distal 18D ends of the rotary part of the housing 16 are attached to each other. More particularly, the proximal 18P and distal 18D ends are provided with complementary toothing 50 connecting the two parts 18P, 18D in rotation with one another.
Par ailleurs, dans les deuxième à quatrième modes de réalisation de l'invention, le joint interne 22 est solidaire de la paroi axiale radialement interne 38I du corps du boîtier. Le joint interne 22 coopère avec une paroi transversale formant un prolongement radialement interne 181 d'une partie de liaison de l'extrémité distale 18D avec l'extrémité proximale 18P de la partie rotative 18.Furthermore, in the second to fourth embodiments of the invention, the internal seal 22 is integral with the radially internal axial wall 38I of the body of the housing. The internal seal 22 cooperates with a transverse wall forming a radially internal extension 181 of a connection part of the distal end 18D with the proximal end 18P of the rotary part 18.
Dans le troisième mode de réalisation de l'invention, représenté sur la figure 3, les joints d'étanchéité interne 22 et externe 24 sont du type à lèvre.In the third embodiment of the invention, shown in FIG. 3, the internal 22 and external 24 seals are of the lip type.
A la différence notamment des premier et deuxième modes de réalisation, le boîtier 16 de la butée de commande 10 selon le troisième mode de réalisation ne comporte pas de capot.Unlike in particular the first and second embodiments, the housing 16 of the control stop 10 according to the third embodiment does not include a cover.
Comme le joint interne 22, le joint externe 24 est solidaire du corps 38 du boîtier 16. Plus particulièrement les joints interne 22 et externe 24 sont fixés par encliquetage respectivement sur la paroi axiale radialement interne 38I du corps et sur une paroi axiale radialement externe 38E de ce corps. Les joints interne 22 et externe 24 coopèrent respectivement avec les deux parois transversales de la partie rotative 18 du boîtier formées par l'extrémité proximale 18P et le prolongement interne 181 de cette partie 18.Like the internal seal 22, the external seal 24 is integral with the body 38 of the housing 16. More particularly the internal 22 and external 24 seals are fixed by snap-fastening respectively to the radially internal axial wall 38I of the body and to a radially external axial wall 38E of this body. The internal 22 and external 24 seals cooperate respectively with the two transverse walls of the rotary part 18 of the housing formed by the proximal end 18P and the internal extension 181 of this part 18.
Dans le quatrième mode de réalisation de l'invention, représenté sur la figure 4, le chemin de roulement fixe en rotation CF est directement ménagé sur la paroi transversale 38T du corps du boîtier. Ainsi, le chemin de roulement fixe en rotation CF est solidaire de la partie fixe en rotation 20 du boîtier. Le cas échéant, la surface de la paroi transversale 38T du corps du boîtier, délimitant le chemin de roulement fixe en rotation CF, est traitée de façon appropriée.In the fourth embodiment of the invention, shown in FIG. 4, the fixed rolling track CF is formed directly on the transverse wall 38T of the body of the housing. Thus, the fixed rotating track CF is integral with the fixed rotating part 20 of the housing. If necessary, the surface of the transverse wall 38T of the housing body, delimiting the fixed raceway in rotation CF, is treated in an appropriate manner.
On notera que dans les quatre premiers modes de réalisation de l'invention représentés sur les figures 1 à 4, le boîtier 16, contenant les moyens de roulement 14, forme un module qui peut être avantageusement pré-assemblé puis monté sur le support 28. Le lubrifiant peut être incorporé dans le boîtier 16 avant montage du module sur le support annulaire 28. Le module, fermé par les deux joints d'étanchéité est propre et facile à manipuler. Le cas échéant, le module peut être soumis à des tests et/ou un rodage avant son montage sur le support annulaire 28. Dans les cinquième à septième modes de réalisation de l'invention, représentés sur les figures 5 à 7, les extrémités proximale 18P et distale 18D de la partie rotative 18 du boîtier 16 sont venues de matière l'une avec l'autre. Par ailleurs, la partie fixe en rotation 20 du boîtier est délimitée par, en plus des corps 38 et capot 40, le support 28. Plus particulièrement, dans les modes de réalisation représentés sur les figures 5 et 6, le joint interne 22 est intercalé radialement entre deux parois annulaires axiales de la partie rotative 18 du boîtier et du support 28. Le joint interne 22 est solidaire de la partie rotative 18 du boîtier. La paroi axiale du support 28 en contact avec ce joint interne 22 est revêtue d'une bague métallique 52, formant surface de portée, optimisant le glissement du joint 22 sur le support 28.Note that in the first four embodiments of the invention shown in Figures 1 to 4, the housing 16, containing the rolling means 14, forms a module which can be advantageously pre-assembled and then mounted on the support 28. The lubricant can be incorporated into the housing 16 before mounting the module on the annular support 28. The module, closed by the two seals, is clean and easy to handle. If necessary, the module can be subjected to tests and / or running-in before it is mounted on the annular support 28. In the fifth to seventh embodiments of the invention, shown in FIGS. 5 to 7, the proximal ends 18P and distal 18D of the rotary part 18 of the housing 16 have come integrally with one another. Furthermore, the fixed rotating part 20 of the housing is delimited by, in addition to the bodies 38 and cover 40, the support 28. More particularly, in the embodiments shown in FIGS. 5 and 6, the internal seal 22 is interposed radially between two axial annular walls of the rotary part 18 of the housing and of the support 28. The internal seal 22 is integral with the rotary part 18 of the housing. The axial wall of the support 28 in contact with this internal seal 22 is coated with a metal ring 52, forming a bearing surface, optimizing the sliding of the seal 22 on the support 28.
Dans le cinquième mode de réalisation de l'invention représenté sur la figureIn the fifth embodiment of the invention shown in the figure
5, le corps 38 de la partie fixe en rotation 20 du boîtier est formé par une plaque annulaire. Le chemin de roulement fixe en rotation CF est ménagé sur cette plaque annulaire. En effet, le chemin de roulement fixe en rotation CF forme une face distale de la plaque annulaire délimitant le corps 38.5, the body 38 of the fixed rotating part 20 of the housing is formed by an annular plate. The fixed rolling track CF is formed on this annular plate. In fact, the fixed rolling track CF rotates a distal face of the annular plate delimiting the body 38.
Par ailleurs, l'organe de pré-positionnement axial et radial 48 de la cage 46 n'existe pas. Le capot 40 réalise le centrage de la cage 46.Furthermore, the axial and radial pre-positioning member 48 of the cage 46 does not exist. The cover 40 centers the cage 46.
On notera que, dans l'exemple représenté sur la figure 5, les rouleaux 26 ont des dimensions axiales plus faibles que dans les modes de réalisation précédents et sont répartis en au moins deux couronnes concentriques. Ainsi, les frottements des rouleaux 26 sur les chemins de roulement correspondants CR, CF sont réduits.Note that, in the example shown in Figure 5, the rollers 26 have smaller axial dimensions than in the previous embodiments and are distributed in at least two concentric rings. Thus, the friction of the rollers 26 on the corresponding raceways CR, CF are reduced.
Dans le sixième mode de réalisation de l'invention représenté sur la figure 6, le boîtier 16 est monté sans jeu radial sur le support annulaire 28, ce dernier ne comportant pas de flasque 34. En effet, la plaque annulaire formant le corps 38 de la partie fixe en rotation 20 du boîtier est rapportée sur le support annulaire 28, de préférence par sertissage.In the sixth embodiment of the invention shown in Figure 6, the housing 16 is mounted without radial clearance on the annular support 28, the latter not having a flange 34. Indeed, the annular plate forming the body 38 of the fixed rotating part 20 of the housing is attached to the annular support 28, preferably by crimping.
Par ailleurs, dans le sixième mode de réalisation de l'invention, l'organe 48 de pré-positionnement radial et axial de la cage 46 est fixé, par exemple par sertissage, sur la plaque annulaire formant le corps 38 du boîtier. Ainsi, l'organe 48 de pré- positionnement est solidaire du chemin de roulement fixe en rotation CF. On notera que l'organe 48 de pré-positionnement radial et axial est fixé sur la plaque annulaire délimitant le corps 38 en étant intercalé entre cette plaque annulaire 38 et le capot 40.Furthermore, in the sixth embodiment of the invention, the member 48 for radial and axial pre-positioning of the cage 46 is fixed, for example by crimping, to the annular plate forming the body 38 of the housing. Thus, the pre-positioning member 48 is integral with the fixed raceway in rotation CF. It will be noted that the member 48 for radial and axial pre-positioning is fixed to the annular plate delimiting the body 38 by being interposed between this annular plate 38 and the cover 40.
Le septième mode de réalisation de l'invention représenté sur la figure 7 est proche du cinquième mode de réalisation.The seventh embodiment of the invention shown in Figure 7 is close to the fifth embodiment.
Toutefois, dans ce cas, le joint interne 22, solidaire de la partie rotative 18 du boîtier 16, est intercalé entre une paroi annulaire axiale de la partie rotative 18 du boîtierHowever, in this case, the internal seal 22, integral with the rotary part 18 of the housing 16, is interposed between an axial annular wall of the rotary part 18 of the housing
16 et une paroi transversale du support 28, Cette paroi transversale, en contact avec le joint interne 22, est revêtue d'une bague métallique 54 munie d'une face, formant surface de portée, optimisant le glissement du joint 22 sur le support 28.16 and a transverse wall of the support 28, this transverse wall, in contact with the internal seal 22, is coated with a metal ring 54 provided with a face, forming a bearing surface, optimizing the sliding of the seal 22 on the support 28 .
Le cas échéant, le joint interne 22 est muni d'une armature métallique 22A.Where appropriate, the internal seal 22 is provided with a metal frame 22A.
En variante, le joint interne 22 pourrait être solidaire de la partie du support 28 délimitant le corps 38 et coopérer avec une paroi axiale de la partie rotative 18 du boîtier 16. Dans cette variante, le joint 22 est en contact glissant avec la partie rotative 18 métallique ce qui évite de rapporter une bague métallique pour former la surface de portée du joint 22.As a variant, the internal seal 22 could be integral with the part of the support 28 delimiting the body 38 and cooperate with an axial wall of the rotary part 18 of the housing 16. In this variant, the seal 22 is in sliding contact with the rotary part 18 metal which avoids adding a metal ring to form the bearing surface of the seal 22.
On notera que, selon les modes de réalisation décrits ci-dessus, les joints d'étanchéité 22, 24 coopèrent avec une paroi plane transversale ou une paroi annulaire axiale. La souplesse des joints 22, 24 autorise un auto-centrage de la butée de commande 10 par déplacement relatif radial des éléments concernés de cette butée.It will be noted that, according to the embodiments described above, the seals 22, 24 cooperate with a transverse plane wall or an axial annular wall. The flexibility of the seals 22, 24 allows self-centering of the control stop 10 by relative radial displacement of the elements concerned with this stop.
Un joint 22, 24 peut être lié à son support par adhérisation des surfaces en contact du joint et du support.A seal 22, 24 can be linked to its support by adhesion of the surfaces in contact with the seal and the support.
La position des joints 22, 24 peut être adaptée à la quantité de lubrifiantThe position of the seals 22, 24 can be adapted to the amount of lubricant
(graisse) destinée à être contenue dans le boîtier 16. En particulier, dans les modes de réalisation de l'invention illustrés sur les figures 5 et 6, la position axiale du joint interne 22 peut être facilement ajustée en fonction de la quantité de lubrifiant destinée à être contenue dans le boîtier 16. (grease) intended to be contained in the housing 16. In particular, in the embodiments of the invention illustrated in FIGS. 5 and 6, the axial position of the internal seal 22 can be easily adjusted depending on the quantity of lubricant intended to be contained in the housing 16.

Claims

REVENDICATIONS
1. Butée de commande d'embrayage, du type comprenant des moyens de roulement (14) comportant des éléments de roulement (26) en contact avec deux chemins de roulement opposés, respectivement rotatif (CR) et fixe en rotation (CF), ces moyens de roulement (14) étant logés dans un boîtier (16), de forme générale annulaire, délimité par deux parties sensiblement coaxiales, respectivement rotative (18) et fixe en rotation (20), entre lesquelles sont intercalés des moyens d'étanchéité (22, 24) destinés à retenir un lubrifiant contenu dans le boîtier (16), caractérisée en ce que les moyens d'étanchéité (22, 24) sont placés dans un demi-espace géométrique (F) délimité par un plan (P) sensiblement perpendiculaire à un axe de révolution (X) du boîtier (16), le chemin de roulement fixe en rotation (CF) s'étendant à l'extérieur de ce demi-espace (F) ou coïncidant avec le plan (P) délimitant ce demi-espace (F).1. Clutch control bearing, of the type comprising rolling means (14) comprising rolling elements (26) in contact with two opposite rolling tracks, respectively rotary (CR) and fixed in rotation (CF), these rolling means (14) being housed in a housing (16), of generally annular shape, delimited by two substantially coaxial parts, respectively rotary (18) and fixed in rotation (20), between which sealing means are interposed ( 22, 24) intended to retain a lubricant contained in the housing (16), characterized in that the sealing means (22, 24) are placed in a geometric half-space (F) delimited by a plane (P) substantially perpendicular to an axis of revolution (X) of the housing (16), the fixed rotating track (CF) extending outside this half-space (F) or coinciding with the plane (P) delimiting this half space (F).
2. Butée de commande d'embrayage selon la revendication 1 , caractérisée en ce que les éléments de roulement comprennent des rouleaux (26) répartis en au moins une couronne autour de l'axe de révolution du boîtier (16), l'axe de chaque rouleau (26) étant sensiblement perpendiculaire à l'axe de révolution (X) du boîtier (16), les chemins de roulement fixe en rotation (CF) et rotatif (CR) étant sensiblement plans et perpendiculaires à l'axe de révolution (X) du boîtier (16). 2. clutch control stopper according to claim 1, characterized in that the rolling elements comprise rollers (26) distributed in at least one ring around the axis of revolution of the housing (16), the axis of each roller (26) being substantially perpendicular to the axis of revolution (X) of the housing (16), the fixed rotation (CF) and rotary (CR) raceways being substantially planar and perpendicular to the axis of revolution ( X) of the housing (16).
3. Butée de commande d'embrayage selon la revendication 2, caractérisée en ce que les rouleaux (26) sont répartis en au moins deux couronnes concentriques.3. Clutch control stopper according to claim 2, characterized in that the rollers (26) are distributed in at least two concentric rings.
4. Butée de commande d'embrayage selon l'une quelconque des revendications précédentes, caractérisée en ce que les moyens d'étanchéité comprennent deux joints annulaires respectivement radialement interne (22) et externe (24).4. Clutch control stopper according to any one of the preceding claims, characterized in that the sealing means comprise two respectively radially internal (22) and external (24) annular seals.
5. Butée de commande d'embrayage selon l'une quelconque des revendications précédentes, caractérisée en ce que les éléments de roulement (26) sont portés par une cage (46) qui est montée avec un jeu radial dans le boîtier (16), notamment un jeu radial supérieur à 1mm. 5. clutch control bearing according to any one of the preceding claims, characterized in that the rolling elements (26) are carried by a cage (46) which is mounted with a radial clearance in the housing (16), in particular a radial clearance greater than 1mm.
6. Butée de commande d'embrayage selon la revendication 5, caractérisée en ce qu'elle comprend des moyens (48) de pré-positionnement radial et axial de la cage (46) dans le boîtier (16), solidaires de l'un des chemins de roulement (CR, CF).6. clutch control bearing according to claim 5, characterized in that it comprises means (48) for radial and axial pre-positioning of the cage (46) in the housing (16), integral with one raceways (CR, CF).
7. Butée de commande d'embrayage selon la revendication 6, caractérisée en ce que la cage (46) est montée avec un jeu radial dans les moyens de pré-positionnement (48). 7. clutch control stopper according to claim 6, characterized in that the cage (46) is mounted with a radial clearance in the pre-positioning means (48).
8. Butée de commande d'embrayage selon l'une quelconque des revendications précédentes, caractérisée en ce que la partie rotative (18) du boîtier (16) est montée avec un jeu radial par rapport à la partie fixe en rotation (20) de ce boîtier (16).8. clutch control bearing according to any one of the preceding claims, characterized in that the rotary part (18) of the housing (16) is mounted with a radial clearance relative to the fixed part in rotation (20) of this housing (16).
9. Butée de commande d'embrayage selon l'une quelconque des revendications précédentes, caractérisée en ce que le boîtier (16) est porté par un support (28) fixe en rotation, de forme générale annulaire, destiné de préférence à relier ce boîtier (16) à des moyens (30) de commande de la butée.9. clutch control bearing according to any one of the preceding claims, characterized in that the housing (16) is carried by a support (28) fixed in rotation, of generally annular shape, intended preferably to connect this housing (16) to means (30) for controlling the stop.
10. Butée de commande d'embrayage selon la revendication 9, caractérisée en ce que le support annulaire (28) est muni d'un flasque (34) contre lequel la partie fixe en rotation (20) du boîtier (16) est maintenue en appui.10. clutch control stopper according to claim 9, characterized in that the annular support (28) is provided with a flange (34) against which the fixed part in rotation (20) of the housing (16) is held in support.
11. Butée de commande d'embrayage selon la revendication 10, caractérisée en ce qu'elle comprend des moyens (44) de serrage élastique du boîtier (16) contre le flasque d'appui (34).11. clutch control stopper according to claim 10, characterized in that it comprises means (44) for elastic tightening of the housing (16) against the support flange (34).
12. Butée de commande d'embrayage selon l'une quelconque des revendications 9 à 11 , caractérisée en ce que le boîtier (16) est monté avec un jeu radial sur le support annulaire (28).12. clutch control stopper according to any one of claims 9 to 11, characterized in that the housing (16) is mounted with a radial clearance on the annular support (28).
13. Butée de commande d'embrayage selon l'une quelconque des revendications 9 à 11, caractérisée en ce que le boîtier (16) est monté sans jeu radial sur le support annulaire (28). 13. clutch control stopper according to any one of claims 9 to 11, characterized in that the housing (16) is mounted without radial clearance on the annular support (28).
14. Butée de commande d'embrayage selon l'une quelconque des revendications précédentes, caractérisée en ce que la partie rotative (18) du boîtier (16) est munie de deux extrémités axiales dites proximale (18P) et distale (18D), le chemin de roulement rotatif (CR) étant solidaire de l'extrémité proximale (18P) de la partie rotative (18) du boîtier (16). 14. clutch control stopper according to any one of the preceding claims, characterized in that the rotary part (18) of the housing (16) is provided with two axial ends called proximal (18P) and distal (18D), the rotary raceway (CR) being integral with the proximal end (18P) of the rotary part (18) of the housing (16).
15. Butée de commande d'embrayage selon la revendication 14, caractérisée en ce que les extrémités proximale (18P) et distale (18D) de la partie rotative (18) du boîtier (16) sont rapportées l'une sur l'autre ou venues de matière l'une avec l'autre.15. Clutch control stopper according to claim 14, characterized in that the proximal (18P) and distal (18D) ends of the rotary part (18) of the housing (16) are attached to each other or come of matter with each other.
16. Butée de commande d'embrayage selon l'une quelconque des revendications 1 à 15, caractérisée en ce que le chemin de roulement fixe en rotation est solidaire de la partie fixe en rotation du boîtier (16).16. Clutch control stopper according to any one of claims 1 to 15, characterized in that the fixed rotating track is integral with the fixed rotating part of the housing (16).
17. Butée de commande d'embrayage selon l'une quelconque des revendications 1 à 15, caractérisée en ce que le chemin de roulement fixe en rotation (CF) est ménagé sur une plaque annulaire (42) intercalée entre les éléments de roulement (26) et la partie fixe en rotation du boîtier (16). 17. clutch control stopper according to any one of claims 1 to 15, characterized in that the fixed rotation raceway (CF) is formed on an annular plate (42) interposed between the rolling elements (26 ) and the fixed rotating part of the housing (16).
18. Butée de commande d'embrayage selon l'une quelconque des revendications 1 à 17, caractérisée en ce que la partie fixe en rotation (20) du boîtier (16) est délimitée par un corps (38), ayant une forme générale de révolution, muni d'une paroi transversale (38T) délimitant le chemin de roulement fixe en rotation (CF) ou formant appui pour ce chemin de roulement fixe en rotation (CF).18. clutch control stopper according to any one of claims 1 to 17, characterized in that the fixed rotating part (20) of the housing (16) is delimited by a body (38), having a general shape of revolution, provided with a transverse wall (38T) delimiting the fixed rotating track (CF) or forming a support for this fixed rotating track (CF).
19. Butée de commande d'embrayage selon les revendications 4 et 18 prises ensemble, caractérisée en ce qu'un capot (40) est rapporté sur le corps (38), le joint externe (24) étant intercalé axialement entre des parois transversales (40T, 18P) du capot (40) et de la partie rotative (18) du boîtier (16). 19. Clutch control stopper according to claims 4 and 18 taken together, characterized in that a cover (40) is attached to the body (38), the external seal (24) being interposed axially between transverse walls ( 40T, 18P) of the cover (40) and of the rotary part (18) of the housing (16).
20. Butée de commande d'embrayage selon les revendications 4 et 18 prises ensemble, caractérisée en ce que le joint externe (24) est solidaire du corps (38) et coopère avec une paroi transversale (18P) de la partie rotative (18) du boîtier (16).20. Clutch control stopper according to claims 4 and 18 taken together, characterized in that the external seal (24) is integral with the body (38) and cooperates with a transverse wall (18P) of the rotary part (18) of the housing (16).
21. Butée de commande d'embrayage selon l'une quelconque des revendications 18 à 20, caractérisée en ce que le chemin de roulement fixe en rotation (CF) est ménagé sur une plaque annulaire formant le corps (38) de la partie fixe en rotation (20) du boîtier (16).21. Clutch control stopper according to any one of claims 18 to 20, characterized in that the fixed rotation track (CF) is formed on an annular plate forming the body (38) of the fixed part in rotation (20) of the housing (16).
22. Butée de commande d'embrayage selon l'une quelconque des revendications 18 à 21, caractérisée en ce que le joint interne (22) est solidaire du corps (38) et coopère avec une paroi transversale (181) ou axiale de la partie rotative (18) du boîtier (16).22. clutch control stopper according to any one of claims 18 to 21, characterized in that the internal seal (22) is integral with the body (38) and cooperates with a transverse (181) or axial wall of the part rotary (18) of the housing (16).
23. Butée de commande d'embrayage selon l'une quelconque des revendications 18 à 21 , caractérisée en ce que le joint interne (22) est solidaire de la partie rotative (18) du boîtier (16) et coopère avec une paroi axiale (38I) ou transversale du corps (38). 23. clutch control stopper according to any one of claims 18 to 21, characterized in that the internal seal (22) is integral with the rotary part (18) of the housing (16) and cooperates with an axial wall ( 38I) or transverse of the body (38).
24. Butée de commande d'embrayage selon les revendications 9 et 21 prises ensemble, caractérisée en ce que la plaque annulaire formant le corps (38) est rapportée sur le support annulaire (28), de préférence par sertissage.24. clutch control stopper according to claims 9 and 21 taken together, characterized in that the annular plate forming the body (38) is attached to the annular support (28), preferably by crimping.
25. Butée de commande d'embrayage selon les revendications 4 et 9 prises en combinaison avec l'une quelconque des revendications 1 à 24, caractérisée en ce que la partie fixe en rotation (20) du boîtier (16) est délimitée par le support annulaire (28).25. clutch control stopper according to claims 4 and 9 taken in combination with any one of claims 1 to 24, characterized in that the fixed rotating part (20) of the housing (16) is delimited by the support annular (28).
26. Butée de commande d'embrayage selon la revendication 25, caractérisée en ce que le joint interne (22) est solidaire de la partie rotative (18) du boîtier (16), le joint interne (22) étant intercalé radialement entre deux parois axiales du support annulaire (28) et de la partie rotative (18) du boîtier (16), la paroi axiale du support annulaire (28) en contact avec ce joint interne (22) étant revêtue d'une bague métallique (52) formant surface de portée. 26. clutch control stopper according to claim 25, characterized in that the internal seal (22) is integral with the rotary part (18) of the housing (16), the internal seal (22) being interposed radially between two walls axial of the annular support (28) and the rotary part (18) of the housing (16), the axial wall of the annular support (28) in contact with this internal seal (22) being coated with a metal ring (52) forming bearing surface.
27. Butée de commande d'embrayage selon la revendication 25, caractérisée en ce que le joint interne (22) est solidaire de la partie rotative (18) du boîtier (16), le joint interne (22) étant intercalé entre une paroi axiale du support annulaire (28) et une paroi transversale de la partie rotative (18) du boîtier (16), la paroi transversale du support annulaire (28) en contact avec ce joint interne (22) étant revêtue d'une bague métallique (54) formant surface de portée. 27. clutch control stopper according to claim 25, characterized in that the internal seal (22) is integral with the rotary part (18) of the housing (16), the internal seal (22) being interposed between an axial wall of the annular support (28) and a transverse wall of the rotary part (18) of the housing (16), the transverse wall of the annular support (28) in contact with this internal seal (22) being coated with a metal ring (54 ) forming a bearing surface.
EP04742851A 2003-04-22 2004-04-21 Improved clutch control release bearing Withdrawn EP1616108A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0304942A FR2854215B1 (en) 2003-04-22 2003-04-22 IMPROVED CLUTCH CONTROL THRUST
PCT/FR2004/050165 WO2004094853A2 (en) 2003-04-22 2004-04-21 Improved clutch control release bearing

Publications (1)

Publication Number Publication Date
EP1616108A2 true EP1616108A2 (en) 2006-01-18

Family

ID=33104319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04742851A Withdrawn EP1616108A2 (en) 2003-04-22 2004-04-21 Improved clutch control release bearing

Country Status (4)

Country Link
EP (1) EP1616108A2 (en)
CN (1) CN1777764A (en)
FR (1) FR2854215B1 (en)
WO (1) WO2004094853A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006045241A1 (en) * 2006-09-26 2008-04-03 Schaeffler Kg Throw out bearing for vehicle clutch has needle bearings set at an angle to the shaft axis for self centering
DE102006059300A1 (en) * 2006-12-15 2008-06-19 Schaeffler Kg clutch release
DE102008011114A1 (en) 2008-02-26 2009-08-27 Schaeffler Kg Anti-friction bearing e.g. skew-angle roller bearing, for use as e.g. release bearing in double-clutch transmission, has housing disks with contact section at external side, where sections are connected with force transmitting elements
EP3467326B1 (en) * 2016-06-03 2020-06-17 Gree Electric Appliances, Inc. of Zhuhai Bearing and air conditioner
DE102020103595A1 (en) * 2020-02-12 2021-08-12 Schaeffler Technologies AG & Co. KG Release bearing arrangement for an axially movable piston of a clutch cylinder of a multi-plate clutch, clutch cylinder arrangement and double-plate clutch

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1004732A (en) * 1949-12-29 1952-04-02 Franc Sa Improvements to ball or roller thrust bearings and deep groove bearings
FR1427664A (en) * 1964-07-23 1966-02-11 Nadella Clutch system comprising a ball or roller thrust bearing
FR2028610A5 (en) * 1969-01-07 1970-10-09 Autolubrification Aps Vehicle disc clutch stops
DE10152484A1 (en) * 2000-11-30 2002-07-04 Ina Schaeffler Kg Sealing for a release bearing

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
FR2854215A1 (en) 2004-10-29
CN1777764A (en) 2006-05-24
WO2004094853A2 (en) 2004-11-04
FR2854215B1 (en) 2006-04-28
WO2004094853A3 (en) 2004-12-16

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