EP2167831A2 - Mecanisme perfectionne pour embrayage, notamment de vehicule automobile - Google Patents
Mecanisme perfectionne pour embrayage, notamment de vehicule automobileInfo
- Publication number
- EP2167831A2 EP2167831A2 EP08806163A EP08806163A EP2167831A2 EP 2167831 A2 EP2167831 A2 EP 2167831A2 EP 08806163 A EP08806163 A EP 08806163A EP 08806163 A EP08806163 A EP 08806163A EP 2167831 A2 EP2167831 A2 EP 2167831A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- diaphragm
- cover
- branch
- clutch
- support member
- 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- Withdrawn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
-
- 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
Definitions
- the present invention relates to the field of clutch mechanisms of a motor vehicle.
- a clutch is intended to couple rotating members driving and driven substantially aligned axes of rotation.
- the rotary driving member is coupled to the engine, more particularly to a crankshaft of the engine, and the driven rotary member is generally coupled to a gearbox shaft.
- the clutch usually comprises a mechanism rotated by the driving member. This mechanism comprises a lid, a diaphragm and a pressure plate, all connected in rotation with the driving member.
- the diaphragm encloses a friction disk, connected in rotation with the driven rotary member, between the pressure plate and a reaction plate secured to rotate the lid.
- the diaphragm forms a lever having a hinge axis embodied by the first and second bearing and hinge parts.
- the diaphragm forms a lever of the first kind, that is to say a lever subjected to an action force and a reaction force, applied on both sides of the hinge axis.
- the diaphragm is capable of tilting around the axis of articulation between an engaged position, towards which this diaphragm is elastically biased, and a disengaged position, towards which this diaphragm is displaced by a control stop against its restoring force. .
- the diaphragm In the engaged position, the diaphragm is guided in rotation by the first support and articulation part, and bears on the second support and articulation part so as to exert a load on the pressure plate. In the disengaged position, the diaphragm is guided in rotation by the second support and articulation part, and bears on the first support part and in order to cancel the load exerted on the pressure plate.
- the support and articulation parts form a joint of rigid or elastic type.
- one of the bearing and hinge parts is resiliently biased toward the other of the bearing and hinge parts, so as to elastically tighten the diaphragm between these parts. This avoids the appearance of a clearance between the diaphragm and the bearing and articulation parts despite the wear of these elements.
- An elastic type joint is generally more economical than a rigid type of articulation since it allows a greater tolerance of the spacing between the bearing and articulation parts.
- This mechanism comprises a cover in which is housed a diaphragm. This diaphragm is articulated between first and second bearing and articulation parts carried by the cover.
- the first support and articulation part is formed by an elastic articulation member in the general shape of "C".
- This "C” member is carried by a support member attached to the lid.
- the "C” member comprises a first attachment branch on the support member and a second branch forming the first support and articulation part of the diaphragm.
- the second support and articulation portion of the diaphragm is formed by an annular rib formed on the lid.
- the second branch of the elastic member is elastically deformable, so as to be elastically biased towards a pinch position of the diaphragm between the first and second bearing and articulation parts.
- the mechanism provided with a hinge member as described in FR-A-2 791 406 is advantageous in particular in that it allows a simple mounting of the diaphragm and in that the shape of the elastic member gives the articulation an optimal elasticity.
- the mechanism takes a position called "storage" when it is not yet mounted on the flywheel. It is a position of static equilibrium that the diaphragm takes under the effect of its elasticity. In such a configuration, the diaphragm exerts on the articulation member a force which is greater than the forces usually exerted on this member under normal conditions of use of the clutch. The joint may therefore suffer undesirable wear when the clutch is without its storage position.
- the object of the invention is in particular to remedy this drawback by providing a mechanism whose elastic articulation is more resistant to the temporary forces exerted on the articulation member in the storage configuration of the mechanism.
- the subject of the invention is a mechanism for a clutch, particularly a motor vehicle, characterized in that it comprises: a cover in which a diaphragm is housed,
- a "C” shaped member carried by a support member attached to the cover, the "C” member comprising a first attachment branch on the support member and a second branch provided with a free end forming a first part of support and articulation of the diaphragm,
- the second branch being elastically deformable so as to be resiliently biased towards a minimum spacing position of the branches allowing the diaphragm to be clamped between the first and second parts; support and articulation, and the support member having a limit stop deformation of the second branch against its restoring force. Thanks to the limit stop, the deformation of the elastic member
- the limitation is chosen such that, when the mechanism is in the storage configuration, the spacing between the first and second branches of the "C" member does not exceed a predetermined value slightly greater than the maximum spacing usual first and second branches when the clutch is in a normal configuration of use after mounting in a vehicle.
- the forces supported by the elastic member during the storage of the mechanism are only slightly higher than those supported during normal use of the clutch.
- a hinge member according to the invention may further comprise one or more of the following features: the support comprises a body of generally cylindrical shape extending through first and second orifices formed respectively in the first and second branches of the "C" member, the first leg resting on a shoulder of the body.
- the "C” member is immobilized in rotation about the axis of the body by cooperation of complementary contours formed on the first branch and the body.
- the first branch is clamped between the shoulder and the cover, the support member has a first hooking end on the cover and a second end bearing a heel on which is formed the limit of deformation stop, the first and second branches of the organ "C” extending between the first end of hooked and the heel of the support.
- the free end of the second branch is curved along a curvature which is projecting in contact with the diaphragm.
- the mechanism comprises a wear-compensating device designed to compensate for the wear of a clutch friction disk when the mechanism is arranged in this clutch.
- the invention also relates to a clutch, in particular for a motor vehicle, characterized in that it comprises a mechanism as defined above.
- FIG. 1 is a view in axial section of a clutch according to an example embodiment of the invention
- FIG. 1 is a perspective view of a hinge member of the clutch of Figure 1.
- FIG. 1 shows a clutch for a motor vehicle according to an exemplary embodiment of the invention, comprising a mechanism designated by the general reference 10.
- the mechanism 10 comprises a lid 12 of general shape of revolution, in which is housed a diaphragm 14 elastically deformable like a Belleville washer.
- the lid 12 and the diaphragm 14 are substantially coaxial.
- the diaphragm 14 can be actuated by a control stop (not shown) and cooperate with a pressure plate 16 housed in the cover 12 and integral in rotation with the latter .
- the diaphragm 14 thus forms a lever of the first kind, articulated between first 18A and second 18B bearing and articulation parts, carried by the cover 12.
- the first support and articulation part 18A is formed by hinge members 22 carried by the cover 12 and distributed circumferentially on the cover 12.
- the second support and articulation part 18B is formed by an annular rib circumferential 23, continuous or not, formed on the cover 12 opposite the first support portion and articulation 18A.
- the second support and articulation part 18B could be carried by one or more support and articulation members attached to the cover 12.
- Each articulation member 22 is intended to exert an axial elastic force on the diaphragm 14, so as to form an elastic hinge.
- the clutch comprises at least three hinge members 22, for example six.
- Each articulation member 22, one of which is shown in greater detail in FIG. 2, comprises a "C" -shaped elastic member 24 and a support member 26 carrying this elastic member 24.
- the support member 26 comprises a body 27 of generally cylindrical shape, comprising first 28 and second 29 coaxial cylindrical portions, extending between first 27A and second 27B ends of the body.
- the second cylindrical portion 29 has a radius greater than that of the first cylindrical portion 28, so that a shoulder 30 is formed at the junction between the first 28 and second 29 cylindrical portions.
- the support member 26 is attached to the cover 12.
- the body comprises, on its first end 27A, means 31 for hooking onto the cover.
- these means 31 form a rivet, housed in an orifice 32 formed in the cover 12 and fixed to the cover 12 by crimping.
- the attachment means 31 comprise means for immobilizing the support member 22 in rotation.
- These rotational immobilization means 22 comprise complementary contours, comprising, for example, complementary flats formed on the first end 27A of the support member 26 and the orifice 32.
- the elastic member 24 in "C” comprises a first hooking branch 24A on the support member 26 and a second branch 24B forming the first support and articulation part 18A of the diaphragm 14.
- the first branch 24A of the elastic member 24 has an orifice 34, through which extends the first portion 28 of the body 27, substantially without radial play.
- the orifice 34 and the first body portion 28 comprise complementary contours, comprising, for example, complementary flats intended to immobilize the elastic member 24 in rotation about the axis of the body 27.
- first portion 28 of the body 27 is fixed to the cover so that the first branch 24A is pinched between the shoulder 30 and the cover 12 and thus immobilized with respect to this cover 12.
- the second branch 24B also has an orifice 36, through which the second portion 29 of the body 27 extends.
- the second branch 24B has a free end 37 curved with a protruding curvature in contact with the diaphragm 14, so as to form the first part 18A of support and articulation.
- This second branch 24B is elastically deformable so as to be resiliently biased towards a minimum spacing position of the branches allowing the pinch of the diaphragm between the first 18A and second 18B parts of support and articulation.
- the body 27 of the support member 26 has, on its second end 27B, a heel 38 (for example in the form of polyhedron), extending transversely the second cylindrical portion 29.
- This heel 38 made of material with the second part 29, comprises a stop 40 for limiting the deformation of the second branch 24B against its return force.
- first 24A and second 24B branches of the elastic member 24 extend between the first end 27A of the body 27 and the heel 38.
- the abutment 40 in addition to limiting the elastic deformation of the elastic member 24, also limits the displacement of the diaphragm 14.
- the abutment 40 thus enables the elastic member 24 to be safeguarded. slackening by plastic deformation.
- the invention is thus particularly advantageous in the case of a mechanism 10 whose diaphragm generates, in storage position, significant forces on the joints, such as a mechanism comprising a wear-compensating device, intended to compensate the wear of a friction disc of the clutch.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0756622A FR2919032B1 (fr) | 2007-07-19 | 2007-07-19 | Mecanisme perfectionne pour embrayage, notamment de vehicule automobile |
PCT/FR2008/051245 WO2009019360A2 (fr) | 2007-07-19 | 2008-07-04 | Mecanisme perfectionne pour embrayage, notamment de vehicule automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2167831A2 true EP2167831A2 (fr) | 2010-03-31 |
Family
ID=39052612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08806163A Withdrawn EP2167831A2 (fr) | 2007-07-19 | 2008-07-04 | Mecanisme perfectionne pour embrayage, notamment de vehicule automobile |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2167831A2 (fr) |
KR (1) | KR20100044178A (fr) |
FR (1) | FR2919032B1 (fr) |
WO (1) | WO2009019360A2 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2994237B1 (fr) * | 2012-08-03 | 2015-07-03 | Valeo Embrayages | Mecanisme d'embrayage, notamment pour vehicule automobile |
DE102014207339A1 (de) * | 2013-05-14 | 2014-11-20 | Schaeffler Technologies Gmbh & Co. Kg | Nietanordnung und Reibungskupplungseinrichtung |
DE102015221137A1 (de) * | 2015-10-29 | 2017-05-04 | Zf Friedrichshafen Ag | Druckplattenbaugruppe für eine Reibungskupplung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1519703A (fr) * | 1967-02-10 | 1968-04-05 | Ferodo Sa | Perfectionnements apportés aux embrayages |
FR2774732B1 (fr) * | 1998-02-12 | 2000-06-02 | Valeo | Dispositif d'embrayage a friction, notamment pour vehicule automobile |
FR2791406B1 (fr) | 1999-03-24 | 2001-05-18 | Valeo | Dispositif de montage d'un diaphragme sur un couvercle d'embrayage |
-
2007
- 2007-07-19 FR FR0756622A patent/FR2919032B1/fr not_active Expired - Fee Related
-
2008
- 2008-07-04 KR KR1020107001117A patent/KR20100044178A/ko not_active Application Discontinuation
- 2008-07-04 WO PCT/FR2008/051245 patent/WO2009019360A2/fr active Application Filing
- 2008-07-04 EP EP08806163A patent/EP2167831A2/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2009019360A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009019360A2 (fr) | 2009-02-12 |
FR2919032B1 (fr) | 2009-10-16 |
WO2009019360A3 (fr) | 2009-04-02 |
KR20100044178A (ko) | 2010-04-29 |
FR2919032A1 (fr) | 2009-01-23 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20091105 |
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AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
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AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: OSMAN, HAFIZ Inventor name: DEQUESNES, LAURENT Inventor name: LECOCQ, EMMANUEL Inventor name: DHALLEINE, CHRISTOPHE |
|
17Q | First examination report despatched |
Effective date: 20110606 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20111018 |