FR2745360A1 - Motor vehicle friction clutch housing unit - Google Patents

Motor vehicle friction clutch housing unit Download PDF

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Publication number
FR2745360A1
FR2745360A1 FR9602233A FR9602233A FR2745360A1 FR 2745360 A1 FR2745360 A1 FR 2745360A1 FR 9602233 A FR9602233 A FR 9602233A FR 9602233 A FR9602233 A FR 9602233A FR 2745360 A1 FR2745360 A1 FR 2745360A1
Authority
FR
France
Prior art keywords
flywheel
clutch
lining
housing
annular space
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.)
Granted
Application number
FR9602233A
Other languages
French (fr)
Other versions
FR2745360B1 (en
Inventor
Fabrice Blehaut
Hubert Dupuis
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Priority to FR9602233A priority Critical patent/FR2745360B1/en
Publication of FR2745360A1 publication Critical patent/FR2745360A1/en
Application granted granted Critical
Publication of FR2745360B1 publication Critical patent/FR2745360B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/72—Features relating to cooling
    • 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
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/46—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs in which two axially-movable members, of which one is attached to the driving side and the other to the driven side, are pressed from one side towards an axially-located member
    • F16D13/48—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs in which two axially-movable members, of which one is attached to the driving side and the other to the driven side, are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member
    • F16D13/50—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs in which two axially-movable members, of which one is attached to the driving side and the other to the driven side, are pressed from one side towards an axially-located member with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member in which the clutching pressure is produced by springs only
    • 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

Abstract

The unit contains an engine flywheel (6) solidly driven by the engine of the vehicle and a clutch mechanism (4) mounted in the interior of the clutch housing (2) concentrically defining around the engine flywheel an annular space. The housing supports a circular cladding (13) centred around the engine flywheel and masking the irregularities of the interior face of the housing in a way to give the annular space a uniform thickness.

Description

DISPOSITIF D'EMBRAYAGE A CARTER
ANTISIFFLEMENT
La présente invention concerne les embrayages à friction, notamment pour véhicules routiers, du type comportant un volant moteur solidaire du moteur d'entraînement du véhicule, et un mécanisme d'embrayage montés à l'intérieur d'un carter.CRANKCASE CLUTCH DEVICE
ANTISIZATION
The present invention relates to friction clutches, in particular for road vehicles, of the type comprising a flywheel integral with the vehicle drive motor, and a clutch mechanism mounted inside a casing.

Dans un tel dispositif d'embrayage, l'espace annulaire libre compns entre le volant moteur et la couronne de démarreur éventuellement fixée sur celui-ci est relativement étroit, et son épaisseur est variable car la surface intérieure du carter à ce niveau n'est pas régulière, de sorte qu'en l'absence de disposition particulière, le déplacement d'air engendré par la rotation du volant moteur, et/ou de la couronne de démarreur fixée sur celui-ci est à l'origine de bruits d'air désagréables.In such a clutch device, the free annular space compns between the flywheel and the starter ring possibly attached thereto is relatively narrow, and its thickness is variable because the inner surface of the casing at this level is not not regular, so that in the absence of any particular provision, the displacement of air generated by the rotation of the flywheel, and / or of the starter ring fixed on the latter is the source of noise. unpleasant looks.

La présente invention vise à faciliter l'écoulement de l'air entre un carter d'embrayage et le volant moteur disposé à l'intérieur de celuici, pour supprimer ces limites d'air.The present invention aims to facilitate the flow of air between a clutch housing and the flywheel arranged inside it, to remove these air limits.

Conformément à l'invention, ce problème est résolu en plaçant à l'intérieur du carter d'embrayage une garniture circulaire concentrique au volant moteur, de façon à masquer les irrégularités de la face intérieure du carter, et à donner à l'espace annulaire séparant le carter du volant une épaisseur uniforme
Dans le cas où la couronne du démarreur est fixée sur le volant moteur, l'invention prévoit que cette garniture s'étende également en regard de celle-ci.According to the invention, this problem is solved by placing inside the clutch housing a concentric circular lining on the flywheel, so as to mask the irregularities of the interior face of the housing, and to give the annular space. separating the flywheel housing a uniform thickness
In the case where the starter ring is fixed on the flywheel, the invention provides that this lining also extends opposite the latter.

De préférence, la garniture comporte sur un bord une partie incurvée, rabattue en direction du mécanisme d'embrayage. Preferably, the lining has on one edge a curved part, folded down towards the clutch mechanism.

D'autres caractéristiques et avantages de l'invention apparaîtront clairement à la lecture de la description suivante d'un mode de réalisation particulier de celle-ci, en se reportant aux dessins annexés, sur lesquels - la figure 1 représente en coupe, une transmission mécanique de
type connu, - la figure 2 met en évidence la présence d'une poche d'air entre le
carter et le volant moteur de la figure 1, - la figure 3 se rapporte à un dispositif d'embrayage conforme à
l'invention, et - la figure 4 illustre l'application de l'invention au niveau de la
poche d'air de la figure 2.Other characteristics and advantages of the invention will appear clearly on reading the following description of a particular embodiment thereof, with reference to the accompanying drawings, in which - Figure 1 shows in section, a transmission mechanical
known type, - Figure 2 highlights the presence of an air pocket between the
crankcase and flywheel of Figure 1, - Figure 3 relates to a clutch device according to
the invention, and - Figure 4 illustrates the application of the invention at the level of
air pocket of figure 2.

Sur la figure 1, on a représenté une transmission mécanique 1 de véhicule automobile comportant de façon classique à l'intérieur d'un carter d'embrayage 2 et d'un carter dit "de mécanisme" 3, un mécanisme d'embrayage 4 associé à un volant moteur 6 solidaire du vilebrequin (non représenté) du moteur d'entraînement du véhicule, et un dispositif de changement de vitesses 7 à arbres parallèles, dont le pignon de sortie 8 engrène avec la couronne 9 du différentiel 11 de la transmission. Ce schéma fait notamment apparaître un écart e entre le volant moteur 6 et le carter d'embrayage 2, plus important dans la partie supérieure que dans la partie inférieure de la coupe.In Figure 1, there is shown a mechanical transmission 1 of a motor vehicle conventionally comprising inside a clutch housing 2 and a so-called "mechanism" housing 3, a clutch mechanism 4 associated to a flywheel 6 secured to the crankshaft (not shown) of the vehicle drive engine, and a gear change device 7 with parallel shafts, the output pinion 8 of which meshes with the crown 9 of the differential 11 of the transmission. This diagram shows in particular a difference e between the flywheel 6 and the clutch housing 2, greater in the upper part than in the lower part of the section.

Comme indiqué plus haut, l'espace annulaire e séparant le volant moteur 6 du carter d'embrayage 2 n'a en effet pas la même épaisseur sur toute la circonférence du carter. La figure 2 reproduit partiellement une coupe transversale du carter d'embrayage 2, effectuée au niveau du volant moteur 6. Sur le secteur concerné, on voit que ce carter 2 s'écarte localement du volant 6, en formant devant celui-ci une poche 12 susceptible d'influer sur ltécoulement de l'air repoussé par le volant. Le profil extérieur cranté 6a du volant, est en effet à l'origine d'un déplacement d'air important entre celui-ci et le carter 2, variant bien entendu avec le régime du moteur.Les irrégularités de forme du volant 6 et du carter d'embrayage 2 mises en évidence sur la figure 2 engendrent donc, à l'intérieur de celui-ci, des variations de pression qui sont à l'origine de "sifflements" à certains régimes du moteur.As indicated above, the annular space e separating the flywheel 6 from the clutch housing 2 does not in fact have the same thickness over the entire circumference of the housing. Figure 2 partially reproduces a cross section of the clutch housing 2, taken at the flywheel 6. In the sector concerned, it can be seen that this housing 2 departs locally from the flywheel 6, forming a pocket in front of it 12 likely to influence the flow of air rejected by the steering wheel. The notched outer profile 6a of the flywheel is in fact at the origin of a significant displacement of air between the latter and the casing 2, of course varying with the engine speed. The irregularities in shape of the flywheel 6 and of the clutch housing 2 highlighted in Figure 2 therefore generate, inside thereof, pressure variations which are the cause of "whistling" at certain engine speeds.

Pour supprimer ce phénomène, I'invention prévoit de placer entre le carter 2 et le volant 6 une garniture 13, apparaissant sur les figures 3 et 4, qui est de préférence fixée sur la face intérieure du carter. Cette garniture est circulaire et concentrique au volant 6. Elle masque devant celui-ci les irrégularités de forme du carter d'embrayage 2, de sorte que l'espace annulaire e mentionné plus haut a une épaisseur constante sur toute la circonférence du volant 6. Dans l'exemple de réalisation de l'invention non limitatif illustré par la figure 3, on voit que le volant moteur 6 supporte la couronne du démarreur 14. Cette dernière présentant elle aussi des dents 14a, elle participe avec le volant moteur à la mise en déplacement d'air à l'intérieur du carter d'embrayage 2. Conformément à l'invention, la garniture aura dans ce cas une largeur suffisante pour s'étendre non seulement en regard du volant moteur 6 mais également en regard de la couronne 14.To eliminate this phenomenon, the invention provides for placing between the casing 2 and the flywheel 6 a lining 13, appearing in FIGS. 3 and 4, which is preferably fixed on the inner face of the casing. This lining is circular and concentric with the flywheel 6. It masks in front of it the irregularities in shape of the clutch housing 2, so that the annular space e mentioned above has a constant thickness over the entire circumference of the flywheel 6. In the embodiment of the nonlimiting invention illustrated by FIG. 3, it can be seen that the flywheel 6 supports the starter ring 14. The latter also having teeth 14a, it participates with the flywheel in setting in displacement of air inside the clutch housing 2. According to the invention, the lining will in this case have a sufficient width to extend not only facing the flywheel 6 but also facing the crown 14.

Enfin, en vue de limiter dans une large mesure les mouvemerltSs,d'air provoqués par la rotation du volant dans le carter 2 à l'espace annulaire délimité par ces derniers, la garniture 13 peut avantageusement comporter sur un bord une partie incurvée 13a, rabattue en direction du mécanisme d'embrayage 4, telle qu'elle apparaît sur la figure 3, ou sous une forme différente.Finally, with a view to limiting to a large extent the movement of air caused by the rotation of the flywheel in the casing 2 to the annular space delimited by the latter, the lining 13 can advantageously include on a side a curved part 13a, folded down towards the clutch mechanism 4, as it appears in FIG. 3, or in a different form.

En conclusion, les disposition proposées par l'invention, permettent de façon simple de supprimer la cause des sifflements liés à la rotation du volant moteur à 1' intérieur du carter de certains dispositifs d'embrayages connus. In conclusion, the arrangements proposed by the invention make it possible, in a simple manner, to eliminate the cause of the whistles linked to the rotation of the flywheel inside the housing of certain known clutch devices.

Claims (3)

REVENDICATIONS donner audit espace annulaire une épaisseur uniforme. les irrégularités de la face intérieure du carter (2), de façon à circulaire (13) centrée autour du volant moteur (6) et masquant (e), caractérisé en ce que le carter (2) supporte une garniture délimitant concentrique au volant moteur un espace annulaire mécanisme d'embrayage (4) montés à l'intérieur d'un carter (2) (6) solidaire entraîné par le moteur du véhicule et unCLAIMS give said annular space a uniform thickness. the irregularities of the inner face of the casing (2), in a circular (13) manner centered around the flywheel (6) and masking (e), characterized in that the casing (2) supports a lining delimiting concentric with the flywheel an annular space clutch mechanism (4) mounted inside a housing (2) (6) integral driven by the vehicle engine and a [1] Dispositif d'embrayage à friction comportant un volant moteur[1] Friction clutch device comprising a flywheel et de la couronne de démarreur (14) fixée sur celui-ci. and the starter ring (14) fixed thereon. ce que la garniture (13) s'étend en regard du volant moteur (6) that the lining (13) extends opposite the flywheel (6) [2] Dispositif d'embrayage selon la revendication 1, caractérisé en[2] Clutch device according to claim 1, characterized in d'embrayage (4). clutch (4). une partie incurvée (13a), rabattue en direction du mécanisme a curved part (13a), folded down towards the mechanism caractérisé en ce que la garniture (13) comporte sur un bord characterized in that the lining (13) has on one edge [3] Dispositif d'embrayage selon la revendication 1 ou 2,[3] Clutch device according to claim 1 or 2, d'embrayage (2).  clutch (2). caractérisé en ce que la garniture (13) est fixée sur le,,Farter  characterized in that the lining (13) is fixed on the ,, Farter [3] Dispositif d'embrayage selon la revendication 1, 2 ou 3,[3] Clutch device according to claim 1, 2 or 3,
FR9602233A 1996-02-23 1996-02-23 CLUTCH DEVICE WITH ANTI-STITCHING CASING Expired - Fee Related FR2745360B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9602233A FR2745360B1 (en) 1996-02-23 1996-02-23 CLUTCH DEVICE WITH ANTI-STITCHING CASING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9602233A FR2745360B1 (en) 1996-02-23 1996-02-23 CLUTCH DEVICE WITH ANTI-STITCHING CASING

Publications (2)

Publication Number Publication Date
FR2745360A1 true FR2745360A1 (en) 1997-08-29
FR2745360B1 FR2745360B1 (en) 1998-03-27

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ID=9489494

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9602233A Expired - Fee Related FR2745360B1 (en) 1996-02-23 1996-02-23 CLUTCH DEVICE WITH ANTI-STITCHING CASING

Country Status (1)

Country Link
FR (1) FR2745360B1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603326A (en) * 1952-07-15 La ps ley
GB912627A (en) * 1960-09-22 1962-12-12 Vauxhall Motors Ltd Improved clutch coupling arrangement
FR1475869A (en) * 1966-02-22 1967-04-07 Saviem Improved cooling device for clutch, especially industrial vehicle
US3366210A (en) * 1965-08-26 1968-01-30 Mack Trucks Wet clutch lubricating system
FR2224320A2 (en) * 1973-04-06 1974-10-31 Brown Tractors Ltd
US3937299A (en) * 1974-08-02 1976-02-10 Caterpillar Tractor Co. Bolt head shroud

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603326A (en) * 1952-07-15 La ps ley
GB912627A (en) * 1960-09-22 1962-12-12 Vauxhall Motors Ltd Improved clutch coupling arrangement
US3366210A (en) * 1965-08-26 1968-01-30 Mack Trucks Wet clutch lubricating system
FR1475869A (en) * 1966-02-22 1967-04-07 Saviem Improved cooling device for clutch, especially industrial vehicle
FR2224320A2 (en) * 1973-04-06 1974-10-31 Brown Tractors Ltd
US3937299A (en) * 1974-08-02 1976-02-10 Caterpillar Tractor Co. Bolt head shroud

Also Published As

Publication number Publication date
FR2745360B1 (en) 1998-03-27

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Effective date: 20131031