EP0723634A1 - Diaphragm clutch cover with stop lugs capable of distinguishing between different cover types - Google Patents
Diaphragm clutch cover with stop lugs capable of distinguishing between different cover typesInfo
- Publication number
- EP0723634A1 EP0723634A1 EP95925036A EP95925036A EP0723634A1 EP 0723634 A1 EP0723634 A1 EP 0723634A1 EP 95925036 A EP95925036 A EP 95925036A EP 95925036 A EP95925036 A EP 95925036A EP 0723634 A1 EP0723634 A1 EP 0723634A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover
- diaphragm
- lugs
- stop
- fixing lugs
- 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- Withdrawn
Links
Classifications
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- 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
- F16D13/00—Friction clutches
- F16D13/58—Details
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- 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
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/583—Diaphragm-springs, e.g. Belleville
- F16D13/585—Arrangements or details relating to the mounting or support of the diaphragm on the clutch on the clutch cover or the pressure plate
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- 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
- F16D13/00—Friction clutches
- F16D13/58—Details
- F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
- F16D13/71—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members in which the clutching pressure is produced by springs only
Definitions
- the present invention relates to covers for a diaphragm clutch, in particular for a motor vehicle, and to unitary assemblies, called clutch mechanisms, comprising such a cover as described in documents FR-A-2 585 424, EP-A-0 535 702 and FR-A-2 242 892.
- a diaphragm clutch mechanism comprises, in a unitary manner, a set of annular parts, namely a cover 1 usually made of sheet metal, a pressure plate 5, usually made of cast iron, a metal diaphragm 6.
- the cover in the form of a hollow plate, has a bottom, of transverse orientation, perforated centrally and at its outer periphery a flange, generally of transverse orientation, directed radially in the direction opposite to the axis of the assembly.
- This rim comprises a first series of coplanar areas 2 by which it is intended to be fixed on a reaction plate shown diagrammatically at 100 in FIG. 1, and a second series of coplanar areas 3, axially set back from the previous ones, by which it is coupled, in a manner known per se, by elastic tongues 4, here of tangential orientation, to the pressure plate 5 thus linked in rotation to the cover with axial mobility.
- areas 2 have holes 120, 121 for respectively the passage of fixing members and centering pins carried by the reaction plate 100.
- the pads 3 are perforated for fixing the tabs 4, which are fixed by fastening members at one of their ends to radial legs of the plate 5 and at the other of their ends to the pads 3 to favor of said holes.
- the diaphragm 6 comprises a peripheral part in the shape of a Belleville washer 7 and a central part fragmented in radial fingers 8 through slots 9, coming from enlarged passages 10 formed between the fingers 8 at the level of the rooting zone of the fingers 8 at the Belleville washer 7.
- This diaphragm 6 has a frustoconical shape in the free state and is here metallic.
- the external periphery of the Belleville washer 7 acts on a fragmented annular boss (not referenced in FIG. 1) of the pressure plate 5, while the internal periphery of this Belleville washer 7 is supported on a primary support 11 carried by the bottom of the cover 1 and formed here by means of a stamped 11 made in the cover.
- this primary support can be formed by means of a rod carried by the cover.
- the reaction plate 100 In a motor vehicle, the reaction plate 100, optionally in two parts for forming a damping flywheel, is intended to be fixed on the crankshaft of the motor vehicle engine, while the friction disc is fixed in rotation on the gearbox input shaft.
- you To disengage the clutch, you must act by pushing, in the direction of arrow A in FIG. 1, on the end of the fingers 8 using a clutch release bearing (not shown) to tilt the diaphragm 6 and stop its action on the pressure plate 5. The tabs 4 then recall the plate 5 towards the bottom of the cover.
- the diaphragm 6 is pivotally mounted on the cover 1 using assembly means pivotally securing the diaphragm to the cover.
- assembly means pivotally securing the diaphragm to the cover.
- these means include the primary support 11 above, retaining members 12, relatively thin and flat, and a crown 13 of frustoconical shape.
- These retaining members 12 are here produced in one piece from the bottom of the cover, in stamped sheet metal, by cutting and folding. These members 12 therefore consist of fixing lugs with an axial part 14 passing through the aforementioned passages 10 and a radial end wing 15 folded radially in the direction opposite to the axis of the assembly, by means of a groove 16 practiced in the axial part 14, for definition of a wedging elbow and mounting of the crown 13 between the diaphragm 6 and the wing 15.
- fixing lugs 12 come from the internal periphery of the bottom of the cover and alternate with abutment lugs 22, also coming from the internal periphery of the cover.
- These tabs 22, generally of transverse orientation, are able to cooperate with the diaphragm 6, more precisely with the fingers 8 thereof, when the clutch mechanism is not yet attached to the reaction plate 100, limit the inclination of the diaphragm.
- the external periphery of the crown 13, usually called the crown ring, provides a secondary support 17 to the diaphragm and this substantially opposite the primary support 11 carried by the cover 1.
- the crown 13 has for example at its outer periphery a rounded edge 21 forming the secondary support 17 and at its inner periphery edges 22,23 in contact with the part 14 and the wing 15 respectively.
- the groove 16 is of trapezoidal shape with two inclined bottoms 20 and a bottom 19.
- a rounded zone connects the stamping 11 to the axial part 14 of the fixing lugs.
- the diaphragm is thus pivotally mounted between its supports 17 and it and when the clutch is disengaged the diaphragm 6 bears on the secondary support 17.
- a support ring 113 is interposed axially between the radial wing 15 of the fixing lugs 12 and the ring 13, which here entirely extends radially beyond the axial part 14 of the lugs 12.
- a rod can be interposed between said diaphragm and the folded wing of the legs.
- the assembly means comprise a support crown 113, it must also be engaged and in if one or more support rods are provided, these must of course be fitted.
- a clutch cover of the above-mentioned type comprising at its internal periphery an alternation of fixing and abutment tabs is characterized in that it comprises at least one abutment tab notched right through.
- this notch we can locate, for example using an optical detector or a mechanical detector, the correct cover.
- the covers with long fixing lugs for mounting a crown ring and a support crown may have a notched stop tab, while the covers with short fixing lugs for mounting a ring crown or of a ring may not present a notch at their stop tab. So they can easily be differentiated using an optical, mechanical or other detector.
- a series of notched stop lugs is provided, and this in a regular manner.
- the covers with long fixing lugs can have a first series of notched stop lugs and the covers with short fixing lugs a second series of notched stop lugs and circumferentially offset relative to the lugs of said first series.
- a clutch mechanism is characterized in that it comprises a cover according to the invention.
- FIG. 1 is an axial sectional view of a clutch mechanism of the prior art
- FIG. 2 is an enlarged view of a detail of Figure 1 corresponding to the insert II of this Figure 1;
- - Figure 3 is a partial view in axial section relating to a bracket before folding its end;
- Figure 4 is a view similar to Figure 3 for another embodiment
- FIG. 5 is an elevational view of a cover according to the invention.
- FIG. 6 is an enlarged view of a detail of Figure 1 corresponding to the insert VI of this figure 5.
- a clutch cover 1 according to the invention intended to equip the clutch mechanism of figure 1.
- This cover 1 therefore comprises before folding before final assembly an end wing in the extension in the axial part of the fixing lugs 12 as visible in FIG. 3.
- This metal cover here in stamped sheet metal, is provided, as mentioned above, at its internal periphery in one piece with an alternation of fixing lugs 12 suitable for axially passing through the diaphragm and of stop lugs 22, generally of orientation, intended to come into contact with the diaphragm to limit the inclination thereof.
- the stop tabs 22 are wider circumferentially than the fixing tabs 12.
- the fixing lugs 12 like the stop lugs 22, are distributed angularly regularly at 40 ° relative to each other and an angle of 20 ° exists between a fixing lug 12 and an adjacent stop lug 22.
- This cover therefore has nine fixing lugs and nine stop lugs distributed regularly.
- the cover 1 therefore also has coplanar fixing pads 2 and coplanar pads 3 for fixing the tangential tongues of FIG. 1 at its outer periphery.
- a clutch cover of the above-mentioned type is characterized in that at least one of these abutment tabs 22 is cut right through.
- the cover has a series of notched stop lugs 122 regularly distributed circularly at 120 ° relative to each other.
- These stop tabs 122 have notches 123 generally in the shape of a U. The notches affect the tabs 122 centrally.
- These three notches 123 here have a semi-circular bottom for passage of a circular rod and are open in the direction of the axis of the assembly for easy threading on said rods, the distribution at 120 ° of the notches favoring the positioning of the cover. .
- the cover is oriented, for example using the passage holes 21 or 121 of these areas 2 or using the passage holes of the areas 3, so that if the legs 122 are not the right ones no rod can pass through the notches 123.
- optical detectors can be used. It will also be appreciated that an operator can more easily locate the covers and that the notches 123 do not profoundly modify the manufacturing tools.
- the various covers can have series of notched stop lugs and determined as a function of the length of the fixing lugs.
- the notches are therefore positioned according to the type of cover, with alternating series of notches from one cover to another.
- the cuts can have another shape.
- they may have a lesser depth.
- the notches can consist of closed holes. They may not be identical to each other.
- the clutch mechanisms can be more easily identified once the fixing lugs have been folded.
- the fixing lugs produced in one piece by cutting and folding the cover are provided, rods, a ring-ring and a support ring which can be associated with said legs in the aforementioned manner.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Diaphragm clutch mechanism cover of the type including at its inner periphery diaphragm securing lugs (12) alternating with stop lugs (22) having an overall transverse orientation, for cooperating with the diaphragm. The cover is characterized in that at least one stop lug (122) has a through groove. The gear cover is suitable for motor vehicles.
Description
COUVERCLE D'EMBRAYAGE POUR MÉCANISME D'EMBRAYAGE À DIAPHRAGME, DONT LES PATTES DE BUTÉE.PERMETTENT DE DISTINGUER LES DIFFERENTS TYPES DE COUVERCLE. CLUTCH COVER FOR DIAPHRAGM CLUTCH MECHANISM, OF WHICH THE STOP LEGS ARE ALLOWED TO DISTINGUISH THE DIFFERENT TYPES OF COVER.
La présente invention concerne les couvercles pour embrayage à diaphragme, notamment pour véhicule automobile, et les ensembles unitaires, dits mécanismes d'embrayage, comportant un tel couvercle tel que décrit dans les documents FR-A-2 585 424, EP-A-0 535 702 et FR-A-2 242 892.The present invention relates to covers for a diaphragm clutch, in particular for a motor vehicle, and to unitary assemblies, called clutch mechanisms, comprising such a cover as described in documents FR-A-2 585 424, EP-A-0 535 702 and FR-A-2 242 892.
Ainsi qu'on le sait (figures 1 à 4) un mécanisme d'embrayage à diaphragme comporte, de manière unitaire, un ensemble de pièces annulaires, à savoir un couvercle 1 usuellement en tôle, un plateau de pression 5, usuellement en fonte, un diaphragme 6 métallique.As is known (FIGS. 1 to 4), a diaphragm clutch mechanism comprises, in a unitary manner, a set of annular parts, namely a cover 1 usually made of sheet metal, a pressure plate 5, usually made of cast iron, a metal diaphragm 6.
Le couvercle 1, en forme d'assiette creuse, comporte un fond, d'orientation transversale, troué centraiement et à sa périphérie externe un rebord, globalement d'orientation transversale, dirigé radialement en direction opposée à l'axe de 1'ensemble.The cover 1, in the form of a hollow plate, has a bottom, of transverse orientation, perforated centrally and at its outer periphery a flange, generally of transverse orientation, directed radially in the direction opposite to the axis of the assembly.
Ce rebord comporte une première série de plages coplanaires 2 par lesquelles il est destiné à être fixé sur un plateau de réaction schématisé en 100 à la figure 1, et une deuxième série de plages coplanaires 3, en retrait axialement par rapport aux précédentes, par lesquelles il est attelé, de manière connue en soi, par des languettes élastiques 4, ici d'orientation tangentielle, au plateau de pression 5 lié ainsi en rotation au couvercle avec mobilité axiale. Ici les plages 2 comportent des trous 120,121 pour respectivement le passage d'organes de fixation et de pions de centrage portés par le plateau de réaction 100.This rim comprises a first series of coplanar areas 2 by which it is intended to be fixed on a reaction plate shown diagrammatically at 100 in FIG. 1, and a second series of coplanar areas 3, axially set back from the previous ones, by which it is coupled, in a manner known per se, by elastic tongues 4, here of tangential orientation, to the pressure plate 5 thus linked in rotation to the cover with axial mobility. Here areas 2 have holes 120, 121 for respectively the passage of fixing members and centering pins carried by the reaction plate 100.
De même, les plages 3 sont trouées pour la fixation des languettes 4, qui sont fixées par des organes de fixation à l'une de leur extrémité à des pattes radiales du plateau 5 et à 1'autre de leur extrémité aux plages 3 à la faveur desdits trous.Likewise, the pads 3 are perforated for fixing the tabs 4, which are fixed by fastening members at one of their ends to radial legs of the plate 5 and at the other of their ends to the pads 3 to favor of said holes.
Le diaphragme 6 comporte une partie périphérique en forme de rondelle Belleville 7 et une partie centrale fragmentée en
doigts radiaux 8 par des fentes 9, issues de passages élargis 10 ménagés entre les doigts 8 au niveau de la zone d'enracinement des doigts 8 à la rondelle Belleville 7. Ce diaphragme 6 a une forme tronconique à l'état libre et est ici métallique. La périphérie externe de la rondelle Belleville 7 agit sur un bossage annulaire fragmenté (non référencé à la figure 1) du plateau de pression 5, tandis que la périphérie interne de cette rondelle Belleville 7 prend appui sur un appui primaire 11 porté par le fond du couvercle 1 et formé ici à la faveur d'un embouti 11 pratiqué dans le couvercle.The diaphragm 6 comprises a peripheral part in the shape of a Belleville washer 7 and a central part fragmented in radial fingers 8 through slots 9, coming from enlarged passages 10 formed between the fingers 8 at the level of the rooting zone of the fingers 8 at the Belleville washer 7. This diaphragm 6 has a frustoconical shape in the free state and is here metallic. The external periphery of the Belleville washer 7 acts on a fragmented annular boss (not referenced in FIG. 1) of the pressure plate 5, while the internal periphery of this Belleville washer 7 is supported on a primary support 11 carried by the bottom of the cover 1 and formed here by means of a stamped 11 made in the cover.
En variante comme décrit dans le document FR-A-2 242 892 cet appui primaire peut être formé à la faveur d'un jonc porté par le couvercle.As a variant, as described in document FR-A-2 242 892, this primary support can be formed by means of a rod carried by the cover.
Normalement l'embrayage est engagé et le diaphragme 6 prend appui sur l'embouti il pour action sur le bossage du plateau de pression 5 afin de serrer les garnitures de frottement d'un disque de friction 101 (représenté de manière schématique à la figure 1) entre les plateaux de pression et de réaction.Normally the clutch is engaged and the diaphragm 6 is supported on the stamped there for action on the boss of the pressure plate 5 in order to tighten the friction linings of a friction disc 101 (shown schematically in Figure 1 ) between the pressure and reaction plates.
Dans un véhicule automobile, le plateau de réaction 100, éventuellement en deux parties pour formation d'un volant amortisseur, est destiné à être fixé sur le vilebrequin du moteur du véhicule automobile, tandis que le disque de friction est calé en rotation sur l'arbre d'entrée de la boîte de vitesses. Pour désengager l'embrayage il faut agir en poussant, dans le sens de la flèche A de la figure 1, sur l'extrémité des doigts 8 à l'aide d'une butée de débrayage (non représentée) pour faire basculer le diaphragme 6 et faire cesser son action sur le plateau de pression 5. Les languettes 4 rappellent alors le plateau 5 en direction du fond du couvercle.In a motor vehicle, the reaction plate 100, optionally in two parts for forming a damping flywheel, is intended to be fixed on the crankshaft of the motor vehicle engine, while the friction disc is fixed in rotation on the gearbox input shaft. To disengage the clutch, you must act by pushing, in the direction of arrow A in FIG. 1, on the end of the fingers 8 using a clutch release bearing (not shown) to tilt the diaphragm 6 and stop its action on the pressure plate 5. The tabs 4 then recall the plate 5 towards the bottom of the cover.
A cet effet le diaphragme 6 est monté de manière pivotante sur le couvercle 1 à l'aide de moyens d'assemblage assujettissant de manière pivotante le diaphragme au couvercle. A la figure 1, ces moyens comportent l'appui primaire 11 précité, des organes de retenue 12, relativement minces et plats, et une couronne 13 de forme tronconique.For this purpose the diaphragm 6 is pivotally mounted on the cover 1 using assembly means pivotally securing the diaphragm to the cover. In Figure 1, these means include the primary support 11 above, retaining members 12, relatively thin and flat, and a crown 13 of frustoconical shape.
Ces organes de retenue 12 sont ici issus d'un seul tenant du fond du couvercle, en tôle emboutie, par découpe et pliage.
Ces organes 12 consistent donc en des pattes de fixation avec une partie axiale 14 traversant les passages 10 précités et une aile radiale d'extrémité 15 pliée radialement en direction opposée à l'axe de l'ensemble, à la faveur d'une saignée 16 pratiquée dans la partie axiale 14, pour définition d'un coude de calage et montage de la couronne 13 entre le diaphragme 6 et l'aile 15.These retaining members 12 are here produced in one piece from the bottom of the cover, in stamped sheet metal, by cutting and folding. These members 12 therefore consist of fixing lugs with an axial part 14 passing through the aforementioned passages 10 and a radial end wing 15 folded radially in the direction opposite to the axis of the assembly, by means of a groove 16 practiced in the axial part 14, for definition of a wedging elbow and mounting of the crown 13 between the diaphragm 6 and the wing 15.
Ces pattes de fixation 12 sont issues de la périphérie interne du fond du couvercle et alternent avec des pattes de butée 22, issues également de la périphérie interne du couvercle.These fixing lugs 12 come from the internal periphery of the bottom of the cover and alternate with abutment lugs 22, also coming from the internal periphery of the cover.
Ces pattes 22, globalement d'orientation transversale, sont propres à coopérer avec le diaphragme 6, plus précisément avec les doigts 8 de celui-ci pour, lorsque le mécanisme d'embrayage n'est pas encore rapporté sur le plateau de réaction 100, limiter l'inclinaison du diaphragme.These tabs 22, generally of transverse orientation, are able to cooperate with the diaphragm 6, more precisely with the fingers 8 thereof, when the clutch mechanism is not yet attached to the reaction plate 100, limit the inclination of the diaphragm.
C'est pour cette raison qu'on a représenté en pointillés dans la partie basse de la figure 1 l'inclinaison des doigts 8 dans cette position, le diaphragme étant globalement plan lorsque l'embrayage est engagé et que les garnitures de friction du disque de friction 101 sont neuves.It is for this reason that the dotted lines in the lower part of FIG. 1 have been shown the inclination of the fingers 8 in this position, the diaphragm being generally flat when the clutch is engaged and the friction linings of the disc. friction rings 101 are new.
La périphérie externe de la couronne 13, usuellement dénommée couronne-jonc, offre un appui secondaire 17 au diaphragme et ce sensiblement en regard de l'appui primaire 11 porté par le couvercle 1.The external periphery of the crown 13, usually called the crown ring, provides a secondary support 17 to the diaphragm and this substantially opposite the primary support 11 carried by the cover 1.
La couronne 13 présente par exemple à sa périphérie externe une arête arrondie 21 formant l'appui secondaire 17 et à sa périphérie interne des arêtes 22,23 au contact respectivement de la partie 14 et de l'aile 15. Usuellement la saignée 16 est de forme trapézoïdale avec deux fonds inclinés 20 et un fond 19. Une zone arrondie raccorde l'embouti 11 à la partie axiale 14 des pattes de fixation.The crown 13 has for example at its outer periphery a rounded edge 21 forming the secondary support 17 and at its inner periphery edges 22,23 in contact with the part 14 and the wing 15 respectively. Usually the groove 16 is of trapezoidal shape with two inclined bottoms 20 and a bottom 19. A rounded zone connects the stamping 11 to the axial part 14 of the fixing lugs.
Le diaphragme est ainsi monté de manière pivotante entre ses appuis 17 et il et lors du désengagement de l'embrayage le diaphragme 6 prend appui sur l'appui secondaire 17.The diaphragm is thus pivotally mounted between its supports 17 and it and when the clutch is disengaged the diaphragm 6 bears on the secondary support 17.
En variante (figure 4) , comme divulgué dans le document EP-As a variant (FIG. 4), as disclosed in the document EP-
A-0 535 702, une couronne de support 113 est interposée axialement entre l'aile radiale 15 des pattes de fixation 12 et la couronne 13, qui s'étend ici toute entière radialement au- delà de la partie axiale 14 des pattes 12.
En variante comme représenté dans le susmentionné documentA-0 535 702, a support ring 113 is interposed axially between the radial wing 15 of the fixing lugs 12 and the ring 13, which here entirely extends radially beyond the axial part 14 of the lugs 12. Alternatively as shown in the aforementioned document
FR-A-2 242 892, les pattes de fixation 12 par leur aile radialeFR-A-2 242 892, the fixing lugs 12 by their radial wing
15 peuvent offrir directement l'appui secondaire au diaphragme.15 can directly offer secondary support to the diaphragm.
En variante un jonc peut être interposé entre ledit diaphragme et l'aile repliée des pattes.As a variant, a rod can be interposed between said diaphragm and the folded wing of the legs.
Dans tous les cas le couvercle subit une opération de découpe puis de mise en forme et enfin le détourage pour présenter, comme visible à la figure 3, avant assemblage du diaphragme 6 une aile d'extrémité 15 droite, en étant parallèle à l'axe de l'ensemble et ce dans l'alignement de la partie axiale 14.In all cases the cover undergoes a cutting and shaping operation and finally the trimming to present, as visible in FIG. 3, before assembly of the diaphragm 6 a right end wing 15, being parallel to the axis of the assembly and this in alignment with the axial part 14.
Ensuite on enfile le diaphragme 6 et la couronne jonc 13 sur les pattes 12 non repliées, puis en final on replie radialement lesdites ailes 15. Lorsque les moyens d'assemblage comportent une couronne de support 113, il faut également engager celle-ci et dans le cas où il est prévu un ou des joncs d'appui il faut bien entendu monter ceux-ci.Then the diaphragm 6 and the ring crown 13 are threaded onto the legs 12 which are not folded, then in the end said wings 15 are folded radially. When the assembly means comprise a support crown 113, it must also be engaged and in if one or more support rods are provided, these must of course be fitted.
A l'issue de l'opération de pliage, il est appliqué dans le cadre des figures 1 et 4 une précontrainte à la couronne 13, qui usuellement présente une charge supérieure à celle exercée sur le diaphragme par la butée de débrayage, ledit diaphragme 6 étant ainsi constamment en appui sur l'appui primaire en étant serré élastiquement. II se pose donc un problème avec ces types de couvercle à pattes de fixation. En effet avant l'opération finale de pliage des pattes, il ne faut pas se tromper de couvercle.At the end of the folding operation, it is applied in the context of FIGS. 1 and 4 a prestress to the crown 13, which usually has a load greater than that exerted on the diaphragm by the clutch release bearing, said diaphragm 6 thus being constantly supported on the primary support while being tightened elastically. There is therefore a problem with these types of cover with fixing lugs. In fact, before the final leg folding operation, you should not make the wrong cover.
Par exemple il ne faut pas prendre des couvercles destinés au montage d'une couronne-jonc et d'une couronne de support pour monter uniquement une couronne-jonc et vice versa car le mécanisme d'embrayage ne fonctionnerait pas de manière correcte, voire même ne fonctionnerait pas du tout.For example, do not take covers intended for mounting a ring crown and a support crown to mount only a ring crown and vice versa because the clutch mechanism would not function correctly, or even would not work at all.
Cela n'est pas évident car les couvercles ont la même configuration et ne diffèrent uniquement que par la longueur axiale des pattes de fixation.This is not obvious since the covers have the same configuration and differ only in the axial length of the fixing lugs.
Compte tenu de l'épaisseur de la couronne de support ou d'un jonc la différence de longueur n'est pas très importante par rapport celle des pattes de fixation supportant uniquement une couronne-jonc.
Certes on peut graver de manière différente les couvercles pour les reconnaître mais un risque d'erreur existe toujours.Given the thickness of the support ring or of a ring, the difference in length is not very large compared to that of the fixing lugs supporting only a ring ring. Of course you can engrave the covers differently to recognize them, but there is always a risk of error.
La présente invention a pour objet de pallier de manière simple et économique ces inconvénients. Suivant l'invention un couvercle d'embrayage du type sus- indiqué comportant à sa périphérie interne une alternance de pattes de fixation et de butée est caractérisé en ce qu'il comporte au moins une patte de butée entaillée de part en part. Ainsi grâce à cette entaille on peut repérer, par exemple à l'aide d'un détecteur optique ou d'un détecteur mécanique, le bon couvercle. Par exemple les couvercles à pattes de fixation longues pour montage d'une couronne-jonc et d'une couronne de support peuvent présenter une patte de butée entaillée, tandis que les couvercles à pattes de fixation courtes pour montage d'une couronne-jonc ou d'un jonc peuvent ne pas présenter d'entaille au niveau de leur patte de butée. Ainsi on peut aisément les différencier et ce à l'aide d'un détecteur optique, mécanique ou autres.The object of the present invention is to overcome these drawbacks in a simple and economical manner. According to the invention a clutch cover of the above-mentioned type comprising at its internal periphery an alternation of fixing and abutment tabs is characterized in that it comprises at least one abutment tab notched right through. Thus thanks to this notch we can locate, for example using an optical detector or a mechanical detector, the correct cover. For example, the covers with long fixing lugs for mounting a crown ring and a support crown may have a notched stop tab, while the covers with short fixing lugs for mounting a ring crown or of a ring may not present a notch at their stop tab. So they can easily be differentiated using an optical, mechanical or other detector.
Par exemple avec le bon couvercle on peut éclairer une cellule à travers l'échancrure ou passer une tige à travers celle-ci. Ainsi les risques d'erreur sont éliminés.For example with the right cover you can light a cell through the notch or pass a rod through it. Thus the risk of error is eliminated.
De préférence on prévoit une série de pattes de butée entaillées et ce de manière régulière. Par exemple les couvercles à pattes de fixation longues peuvent présenter une première série de pattes de butée entaillées et les couvercles à pattes de fixation courtes une deuxième série de pattes de butée entaillées et décalées circonférentiellement par rapport aux pattes de ladite première série.Preferably, a series of notched stop lugs is provided, and this in a regular manner. For example, the covers with long fixing lugs can have a first series of notched stop lugs and the covers with short fixing lugs a second series of notched stop lugs and circumferentially offset relative to the lugs of said first series.
Ainsi on peut monter les couvercles sur des chandelles équipées de tiges destinées à pénétrer dans les entailles, seuls les bons couvercles se montant sur lesdites chandelles.Thus one can mount the covers on candles fitted with rods intended to penetrate into the notches, only the correct covers being mounted on said candles.
Suivant l'invention un mécanisme d'embrayage est caractérisé en ce qu'il comporte un couvercle selon l'invention. La description qui va suivre illustre l'invention en regard des dessins annexés dans lesquels :According to the invention a clutch mechanism is characterized in that it comprises a cover according to the invention. The description which follows illustrates the invention with reference to the appended drawings in which:
- la figure 1 est une vue en coupe axiale d'un mécanisme d'embrayage de l'art antérieur , -- Figure 1 is an axial sectional view of a clutch mechanism of the prior art, -
- la figure 2 est une vue à plus grande échelle d'un détail de la figure 1 correspondant à l'encart II de cette figure 1 ;
- la figure 3 est une vue partielle en coupe axiale se rapportant à une patte de fixation avant pliage de son extrémité ;- Figure 2 is an enlarged view of a detail of Figure 1 corresponding to the insert II of this Figure 1; - Figure 3 is a partial view in axial section relating to a bracket before folding its end;
- la figure 4 est une vue analogue à la figure 3 pour un autre exemple de réalisation ;- Figure 4 is a view similar to Figure 3 for another embodiment;
- la figure 5 est une vue en élévation d'un couvercle selon 1'invention ;- Figure 5 is an elevational view of a cover according to the invention;
- la figure 6 est une vue à plus grande échelle d'un détail de la figure 1 correspondant à l'encart VI de cette figure 5. A la figure 4 on voit un couvercle d'embrayage 1 selon l'invention destiné à équiper le mécanisme d'embrayage de la figure 1.- Figure 6 is an enlarged view of a detail of Figure 1 corresponding to the insert VI of this figure 5. In Figure 4 we see a clutch cover 1 according to the invention intended to equip the clutch mechanism of figure 1.
Ce couvercle 1 comporte donc avant pliage avant assemblage final une aile d'extrémité dans le prolongement dans la partie axiale des pattes de fixation 12 comme visible à la figure 3.This cover 1 therefore comprises before folding before final assembly an end wing in the extension in the axial part of the fixing lugs 12 as visible in FIG. 3.
Ce couvercle métallique, ici en tôle emboutie, est doté, de manière précitée, à sa périphérie interne d'un seul tenant d'une alternance de pattes de fixation 12 propres à traverser axialement le diaphragme et de pattes de butée 22, globalement d'orientation, destinées à venir en contact avec le diaphragme pour limiter l'inclinaison de celui-ci. Les pattes de butée 22 sont plus larges circonférentiellement que les pattes de fixation 12.This metal cover, here in stamped sheet metal, is provided, as mentioned above, at its internal periphery in one piece with an alternation of fixing lugs 12 suitable for axially passing through the diaphragm and of stop lugs 22, generally of orientation, intended to come into contact with the diaphragm to limit the inclination thereof. The stop tabs 22 are wider circumferentially than the fixing tabs 12.
Ici les pattes de fixation 12, tout comme les pattes de butée 22, sont réparties angulairement régulièrement à 40° les unes par rapport aux autres et un angle de 20° existe entre une patte de fixation 12 et une patte de butée 22 adjacente.Here the fixing lugs 12, like the stop lugs 22, are distributed angularly regularly at 40 ° relative to each other and an angle of 20 ° exists between a fixing lug 12 and an adjacent stop lug 22.
Ce couvercle présente donc neuf pattes de fixation et neuf pattes de butée réparties régulièrement. Le couvercle 1 présente donc également à sa périphérie externe des plages coplanaires de fixation 2 et des plages coplanaires 3 de fixation des languettes tangentielles de la figure 1.This cover therefore has nine fixing lugs and nine stop lugs distributed regularly. The cover 1 therefore also has coplanar fixing pads 2 and coplanar pads 3 for fixing the tangential tongues of FIG. 1 at its outer periphery.
Ceci étant rappelé suivant l'invention un couvercle d'embrayage du type sus-indiqué est caractérisé en ce qu'au moins l'une de ces pattes de butée 22 est entaillée de part en part.This being recalled according to the invention a clutch cover of the above-mentioned type is characterized in that at least one of these abutment tabs 22 is cut right through.
Ici le couvercle présente une série de pattes de butée 122 entaillées réparties régulièrement circulairement à 120° les unes par rapport aux autres.
Ces pattes de butée 122 présentent des entailles 123 globalement en forme de U. Les entailles affectent centralement les pattes 122.Here the cover has a series of notched stop lugs 122 regularly distributed circularly at 120 ° relative to each other. These stop tabs 122 have notches 123 generally in the shape of a U. The notches affect the tabs 122 centrally.
Ces trois entailles 123 présentent ici un fond semi- circulaire pour passage d'une tige circulaire et sont ouvertes en direction de l'axe de l'ensemble pour enfilage aisé sur lesdites tiges, la répartition à 120° des entailles favorisant le positionnement du couvercle.These three notches 123 here have a semi-circular bottom for passage of a circular rod and are open in the direction of the axis of the assembly for easy threading on said rods, the distribution at 120 ° of the notches favoring the positioning of the cover. .
On notera qu'une faible distance existe entre le fond de l'entaille et l'embouti 11 formant l'appui primaire de basculemen .It will be noted that a small distance exists between the bottom of the notch and the stamp 11 forming the primary tilting support.
Ainsi lors de l'assemblage final, le couvercle est orienté, par exemple à l'aide des trous de passage 21 ou 121 de ces plages 2 ou à l'aide des trous de passage des plages 3, en sorte que si les pattes 122 ne sont pas les bonnes aucune tige ne pourra passer à travers les entailles 123.Thus during the final assembly, the cover is oriented, for example using the passage holes 21 or 121 of these areas 2 or using the passage holes of the areas 3, so that if the legs 122 are not the right ones no rod can pass through the notches 123.
Par contre, pour les couvercles à pattes de fixation de longueur adéquate, les tiges pourront passer.On the other hand, for covers with fixing lugs of adequate length, the rods can pass.
En variante on peut utiliser des détecteurs optiques. On appréciera également qu'un opérateur peut repérer plus aisément les couvercles et que les entailles 123 ne modifient pas profondément les outils de fabrication.Alternatively, optical detectors can be used. It will also be appreciated that an operator can more easily locate the covers and that the notches 123 do not profoundly modify the manufacturing tools.
Ainsi qu'on l'aura compris on peut entailler les pattes 222 pour les types de couvercle à pattes de fixation de longueur différente par rapport au couvercle de la figure 5.As will be understood, it is possible to cut the lugs 222 for the types of cover with fixing lugs of different length relative to the cover in FIG. 5.
Ainsi les différents couvercles peuvent présenter des séries de pattes de butée entaillées et déterminées en fonction de la longueur des pattes de fixation.Thus, the various covers can have series of notched stop lugs and determined as a function of the length of the fixing lugs.
Les entailles sont donc positionnées en fonction du type de couvercle, avec alternance des séries d'entailles d'un couvercle à l'autre.The notches are therefore positioned according to the type of cover, with alternating series of notches from one cover to another.
Bien entendu la présente invention n'est pas limitée à l'exemple de réalisation décrit.Of course, the present invention is not limited to the embodiment described.
Ainsi les entailles peuvent avoir une autre forme. Par exemple elles peuvent avoir une profondeur moindre. En variante les entailles peuvent consister en des trous fermés. Elles peuvent ne pas être identiques entre elles.So the cuts can have another shape. For example, they may have a lesser depth. As a variant, the notches can consist of closed holes. They may not be identical to each other.
On notera aussi que l'on peut repérer plus aisément les mécanismes d'embrayage une fois le pliage des pattes de fixation effectué.
Bien entendu dans tous les cas des pattes de fixation issues d'un seul tenant par découpe et pliage du couvercle sont prévues, des joncs, une couronne-jonc et une couronne de support pouvant être associés auxdites pattes de manière précitée.
It will also be noted that the clutch mechanisms can be more easily identified once the fixing lugs have been folded. Of course, in all cases, the fixing lugs produced in one piece by cutting and folding the cover are provided, rods, a ring-ring and a support ring which can be associated with said legs in the aforementioned manner.
Claims
REVENDICATIONS
1- Couvercle d'embrayage pour mécanisme d'embrayage à diaphragme, du genre comportant à sa périphérie interne une alternance de pattes de fixation (12) pour le diaphragme et de pattes de butée (22), globalement d'orientation transversale, propres à coopérer avec le diaphragme, caractérisé en ce qu'au moins une patte de butée (122) est entaillée de part en part.1- Clutch cover for diaphragm clutch mechanism, of the type comprising at its internal periphery alternating fixing lugs (12) for the diaphragm and thrust lugs (22), generally of transverse orientation, suitable for cooperate with the diaphragm, characterized in that at least one stop tab (122) is cut right through.
2- Couvercle selon la revendication 1, caractérisé en ce que l'entaille (123) a en section globalement la forme d'un U.2- Cover according to claim 1, characterized in that the notch (123) has in cross section generally the shape of a U.
3- Couvercle selon la revendication 2, caractérisé en ce que le fond de l'entaille (123) est semi-circulaire.3- Cover according to claim 2, characterized in that the bottom of the notch (123) is semi-circular.
4- Couvercle selon la revendication 1, caractérisé en ce qu'il comporte une série de pattes de butée (122) entaillées et réparties régulièrement circonférentiellement.4- Lid according to claim 1, characterized in that it comprises a series of stop tabs (122) notched and regularly distributed circumferentially.
5- Couvercle selon la revendication 4, caractérisé en ce que la série de pattes de butée (122) est entaillée et déterminée en fonction de la longueur des pattes de fixation.5- Cover according to claim 4, characterized in that the series of stop lugs (122) is notched and determined according to the length of the fixing lugs.
6- Mécanisme d'embrayage du genre comportant un couvercle (1) , un diaphragme (6) monté de manière pivotante sur le couvercle à l'aide de pattes de fixation (12) issues d'un seul tenant avec le couvercle (1) , un plateau de pression (5) soumis à l'action du diaphragme (6) et lié en rotation avec mobilité axiale par rapport au couvercle à l'aide de languettes tangentielles (4), caractérisé en ce qu'il comporte un couvercle selon la revendication 1.
6- Clutch mechanism of the kind comprising a cover (1), a diaphragm (6) pivotally mounted on the cover by means of fixing lugs (12) coming in one piece with the cover (1) , a pressure plate (5) subjected to the action of the diaphragm (6) and linked in rotation with axial mobility relative to the cover using tangential tongues (4), characterized in that it comprises a cover according to claim 1.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9409397 | 1994-07-25 | ||
FR9409397A FR2722850B1 (en) | 1994-07-25 | 1994-07-25 | CLUTCH COVER FOR DIAPHRAGM CLUTCH MECHANISM, WHOSE THROUGH LEGS ALLOW TO DISTINGUISH THE DIFFERENT TYPES OF COVER AND CLUTCH MECHANISM COMPRISING SUCH A COVER |
PCT/FR1995/000926 WO1996003589A1 (en) | 1994-07-25 | 1995-07-11 | Diaphragm clutch cover with stop lugs capable of distinguishing between different cover types |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0723634A1 true EP0723634A1 (en) | 1996-07-31 |
Family
ID=9465870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95925036A Withdrawn EP0723634A1 (en) | 1994-07-25 | 1995-07-11 | Diaphragm clutch cover with stop lugs capable of distinguishing between different cover types |
Country Status (5)
Country | Link |
---|---|
US (1) | US5813507A (en) |
EP (1) | EP0723634A1 (en) |
KR (1) | KR100357648B1 (en) |
FR (1) | FR2722850B1 (en) |
WO (1) | WO1996003589A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2797005B1 (en) * | 1999-07-13 | 2001-12-07 | Valeo | DIAPHRAGM CLUTCH MECHANISM, ESPECIALLY FOR A MOTOR VEHICLE |
DE102010028538B4 (en) * | 2010-05-04 | 2020-09-03 | Zf Friedrichshafen Ag | Coupling assembly with wear compensation |
DE102013206548A1 (en) * | 2013-04-12 | 2014-10-16 | Schaeffler Technologies Gmbh & Co. Kg | Pressure plate assembly and coupling device with pressure plate assembly |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2242892A5 (en) * | 1973-08-27 | 1975-03-28 | Ferodo Sa | Motor vehicle diaphragm clutch unit - locking projections engage outer ends of radial diaphragm openings |
DE2843272A1 (en) * | 1978-10-04 | 1980-04-17 | Luk Lamellen & Kupplungsbau | FRICTION CLUTCH |
DE2843317A1 (en) * | 1978-10-04 | 1980-04-17 | Luk Lamellen & Kupplungsbau | FRICTION CLUTCH |
FR2520823B1 (en) * | 1982-02-04 | 1986-03-28 | Valeo | FRICTION CLUTCH MECHANISM PROVIDED WITH AN IMPROVED TRAVEL LIMITATION DEVICE, PARTICULARLY FOR A MOTOR VEHICLE |
FR2538058B1 (en) * | 1982-12-16 | 1988-07-29 | Valeo | CLUTCH MECHANISM, ESPECIALLY FOR A MOTOR VEHICLE |
DE8334542U1 (en) * | 1983-12-01 | 1992-12-24 | LuK Lamellen und Kupplungsbau GmbH, 7580 Bühl | Friction clutch |
FR2564545B1 (en) * | 1984-05-16 | 1986-10-24 | Valeo | DIAPHRAGM CLUTCH MECHANISM AND MANUFACTURING METHOD THEREOF. |
DE3516264A1 (en) * | 1984-12-21 | 1986-06-26 | LuK Lamellen und Kupplungsbau GmbH, 7580 Bühl | Assembly for transmitting torque by means of friction |
FR2585424B1 (en) * | 1985-07-29 | 1989-12-29 | Valeo | DIAPHRAGM CLUTCH MECHANISM, ESPECIALLY FOR A MOTOR VEHICLE |
FR2682170B1 (en) * | 1991-10-02 | 1998-01-09 | Valeo | DIAPHRAGM CLUTCH, ESPECIALLY FOR MOTOR VEHICLES. |
DE4201417B4 (en) * | 1992-01-21 | 2004-05-19 | Zf Sachs Ag | Tool for dismantling a motor vehicle friction clutch |
-
1994
- 1994-07-25 FR FR9409397A patent/FR2722850B1/en not_active Expired - Fee Related
-
1995
- 1995-07-11 EP EP95925036A patent/EP0723634A1/en not_active Withdrawn
- 1995-07-11 KR KR1019960701525A patent/KR100357648B1/en not_active IP Right Cessation
- 1995-07-11 US US08/617,863 patent/US5813507A/en not_active Expired - Fee Related
- 1995-07-11 WO PCT/FR1995/000926 patent/WO1996003589A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9603589A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR960705150A (en) | 1996-10-09 |
WO1996003589A1 (en) | 1996-02-08 |
FR2722850A1 (en) | 1996-01-26 |
FR2722850B1 (en) | 1996-09-06 |
KR100357648B1 (en) | 2003-03-03 |
US5813507A (en) | 1998-09-29 |
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