EP3551908A1 - Disque de friction d'embrayage et embrayage à friction comportant un tel disque - Google Patents
Disque de friction d'embrayage et embrayage à friction comportant un tel disqueInfo
- Publication number
- EP3551908A1 EP3551908A1 EP17829948.3A EP17829948A EP3551908A1 EP 3551908 A1 EP3551908 A1 EP 3551908A1 EP 17829948 A EP17829948 A EP 17829948A EP 3551908 A1 EP3551908 A1 EP 3551908A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- friction
- washer
- disc
- clutch
- friction washer
- 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- Withdrawn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
- 125000002015 acyclic group Chemical group 0.000 claims description 2
- 238000013016 damping Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/129—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means
- F16F15/1295—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means characterised by means for interconnecting driven plates and retainer, cover plates
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/129—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon characterised by friction-damping means
Definitions
- the present invention relates to a clutch friction disc having friction surfaces mounted so as to have no axial play.
- the invention also relates to a friction clutch comprising such a friction disc.
- the invention finds applications in the field of clutches for motor vehicles and, in particular, in the field of friction clutches for motor vehicles.
- a conventional clutch friction disc comprises, as shown in FIGS. 1A-1B, a support disk 101 made of sheet steel, in connection with an annular web 104, and bearing on each of its faces a packing of friction 102 constituted by a thick disc of friction material.
- the friction disc 100 is intended to be clamped between a pressure plate and a reaction plate of the clutch.
- These clutch plates are rotatably connected to a motor shaft 200 - which may be the crankshaft of the engine in an application to the motor vehicle.
- the friction disc 100 is set in rotation on a driven shaft 300 - which may be the input shaft of the gearbox in an application to the motor vehicle - through its hub 103.
- the pressure plate ensures the adhesion of the friction disc to the reaction plate.
- the pressure plate releases the friction linings, which leads to disengaging the drive shaft from the driven shaft of the gearbox.
- a friction clutch generally comprises, between the friction linings 102 and the hub 103, a torsion damping device 120 for filtering acyclisms (vibrations, jerks, etc.) between the engine and the gearbox.
- this damping device 120 comprises first and second guide rings 121, 122, secured to one another by means of spacers 106, and now the annular web 104 and the support disc 101 between them .
- each first and second guide ring 121, 122 comprises windows 125a, 125b formed in their thickness and adapted to each receive a high stiffness helical spring 124.
- the annular web 104 also comprises windows 125c, axially facing the windows 125a, 125b of the first and second guide rings 121, 122, and adapted to each receive one of the coil springs 124.
- Several coil springs 124 are thus mounted in the guide rings and the web, circumferentially, to form a circumferential elastic system. This elastic system contributes to the transmission of the torque between the guide washers and the sail - and therefore between the engine and the gearbox - and promotes a flexibility in the transmission of torque so as to limit jolts when the clutch is in the engaged position.
- acyclisms generated during transmission of the torque between the engine and the gearbox can be felt by the driver, especially in the presence of strong centrifugal effects. It has been found that these acyclisms can be reduced when the friction disk has friction surfaces. Indeed, it has been found that the number of friction surfaces has a direct effect on the damping jolts and other acyclisms.
- the applicant proposes a friction disc in which a first and a second friction washer are fixed so as to prevent any axial play of the friction washers within the friction disc while allowing the friction of surfaces between them, thus optimizing the filtration of the acyclisms.
- the invention relates to a clutch friction disc comprising:
- annular web adapted to be mounted around a driven shaft of rotation
- an acyclic damper device comprising a first and a second guide ring, integral with each other and each provided with windows receiving an elastic system with a circumferential effect
- This friction disc is characterized in that it comprises a first friction washer mounted between the first guide washer and the support disc and fixed without angular play on the annular web, and a second friction washer mounted between the first friction washer and the annular web and fixed without angular play on the first guide ring.
- the arrangement of the first and second friction washers of the friction disc has the advantage of increasing the number of friction surfaces within the friction disc, without increasing the axial clearances.
- the second friction washer is mounted within the support disc.
- the second friction washer is an integral part of the support disc.
- the first friction washer and the second friction washer are mounted so as to interlock. This intercrossing of the friction washers makes it possible to fix each of said washers while retaining their relative mobility.
- the clutch friction disc may further include one or more of the following features:
- the first friction washer comprises an annular friction zone and fixing fins and the second friction washer comprises an annular friction zone and connecting fins, the fixing fins of the first friction washer being circularly offset from the fins; connection of the second friction washer.
- the first friction washer and / or the second friction washer comprise at least one ply ensuring a difference in level between the annular friction zone and the fins.
- the first friction washer has two fixing fins, each fixing fin being provided with an orifice through which a rivet for fixing said friction washer on the annular web.
- the second friction washer has two connecting fins, each connecting fin being provided with an orifice through which a rivet fixing said friction washer on the first guide ring.
- the second friction washer is fixed on the first guide ring by rivets ensuring the attachment of the first and second guide rings therebetween.
- the invention relates to a friction clutch, in particular for a motor vehicle, comprising:
- reaction plate intended to be wedged in rotation on a driving shaft; a friction disk as defined above, bearing friction linings and intended to be wedged in rotation on a driven shaft, and
- a pressure plate capable of pressing the friction disc on the reaction plate.
- FIGS. 2A and 2B show, respectively, a semi-exploded perspective view and a front view of a friction disc according to the present invention
- FIG. 3A and 3B show views, respectively, of front and side of the first friction ring of a friction disc according to the present invention
- FIG. 4 represents a front view of the second friction washer of a friction disc according to the present invention.
- FIG. 5 shows a sectional view of a friction disc according to the present invention.
- the friction disc 100 of a friction clutch comprises a support disc 101 equipped with friction linings 102 and a central orifice 105 enabling it to be connected to the hub 103. of the clutch.
- the hub 103 is mounted on the driven shaft of the gearbox and is connected to the support disk 101 via an annular web 104.
- the friction disk 100 In the engaged position, a pressure plate applies a clamping force on the friction disc 100 so as to transmit the torque produced by the engine to the gearbox.
- the friction disk 100 comprises a damping device 120 mounted between the friction linings 102 and the central orifice 105 of said friction disc 100.
- This damping device 120 comprises a first and a second guide ring, respectively 121 and 122, rotatably mounted around the hub 103 and secured to one another by means of spacers (not visible in the figures).
- the annular web 104 is arranged between the two guide rings 121, 122 in a coaxial manner and comprises, on its inner periphery, a set of peripheral teeth meshing in slots arranged at the outer periphery of the hub 103.
- the damping device 120 further comprises a resilient circumferential effect system comprising several helical springs 124 of strong stiffness, identical or different from one spring to another.
- the coil springs 124 are housed in windows 125a, 125b, 125c respectively formed in the two guide washers 121, 122 and in the annular web 104.
- the coil springs 124 are circumferentially abutting on the guide washers 121, 122 and on the web 104.
- the elastic system with circumferential effect thus participates in the transmission of the rotational torque between the guide washers 121, 122 and the annular web 104.
- coil springs 124 for example four, are distributed over the circumference of the annular web 104 and guide washers 121, 122. These coil springs 124 are housed in windows 125a-125c arranged in each of the guide washers 121, 122 and in the annular web 104.
- the damping device also comprises a first friction washer 130 and a second friction washer 140.
- These friction washers 130, 140 serve to ensure a friction on one another and therefore to increase the number of friction surfaces.
- increasing the number of friction surfaces makes it possible to increase the resistance torque and thus to generate an additional hysteresis effect in the friction disc.
- doubling the number of friction surfaces doubles the resistance torque and therefore improves filtering of acyclisms.
- multiplying the number of friction surfaces also makes it possible to divide the elastic loads within the friction disc, which makes it possible for a identical result to that of the friction discs of the prior art, to use springs of lesser stiffness and thus to reduce the cost of the friction disc.
- the first friction washer 130 is an independent washer comprising an annular rubbing zone 131 and fixing fins 132, distributed laterally around the annular zone 131.
- the second friction washer 140 is a washer integrated in the support disc 101. This second friction washer 140 comprises an annular zone 141 and connecting fins 142, connecting the annular zone 141 to the support zone 143 of the support disc on which the gaskets 102 are mounted.
- first friction washer 130 is shown in a front view and a side view in Figures 3A-3B.
- These figures show the annular zone 131 on which are mounted, diametrically opposed, two fixing fins 132.
- Each fixing fin 132 is a tab integral with the annular zone 131 and can be attached to said annular zone, for example by welding , or manufactured in one piece with the annular zone 131, for example by cutting into a sheet.
- Each fixing fin 132 comprises an orifice 134 intended to be traversed by a fixing piece of the rivet type.
- each fastening fin 132 may comprise, at the joint between the fin and the annular zone, one or more folds 133 forming a difference in level between said fastening fin 132 and the zone annular 131.
- FIG. 4 An example of the second friction washer 140 is shown, in a front view, in Figure 4.
- This Figure 4 shows the support disc 101 with its support area 143 for receiving the friction linings.
- the support disc 101 incorporates, in its center, the second friction washer 140.
- This second friction washer 140 comprises an annular friction zone 141 concentric with the support zone 143 and connected to said zone
- the connecting fins 142 for example two in number, are positioned laterally on the periphery of the annular zone 141, in a diametrically opposite manner.
- each connecting fin 142 of the second friction washer 140 is a tab integral with the annular zone 141 which can be attached to said annular zone, for example by welding, or manufactured in one piece with the annular zone 141, for example by cutting in a sheet.
- Each of the connecting fins 142 may comprise, at the joint between the fin 142 and the annular zone 141, one or more folds 144 forming a difference in level between said connecting fin 142 and the annular zone 141.
- the first friction washer 130 is mounted between the first guide washer 121 and the support disc 101 and the second friction washer 140 is mounted between the annular web 104 and the first friction washer 130.
- the second friction washer 140 may be integrated into the support disc 101, as shown in FIGS. 2A-2B.
- the second friction washer 140 may also be a washer independent of the support disc, mounted between the first friction washer 130 and the annular web 140 and fixed on the guide washer 121, as explained more in detail thereafter.
- first friction washer 130 and the second friction washer 140 each comprise two fixing / connecting fins.
- the number of fixing or connecting fins may vary depending, for example, on the number of springs 124.
- the first friction washer 130 and the second friction washer 142 are stacked one on the other so that the fixing fins 132 of the first friction washer 130 are circularly shifted from the connecting fins 142 of the second friction washer 140.
- the two friction washers 130, 140 are positioned so that their annular zones 131, 141 are in parallel planes and that their fins 132, 142 do not do not overlap axially.
- the fins 132, 142 are placed so that, seen from the front, a straight line passing through the two fastening fins 132 is orthogonal to a straight line passing through the two connecting fins 142.
- the first friction washer 130 is fixed on the annular web 104 and the second friction washer 140 is fixed on the first guide washer 121.
- the fixing of the friction washers 130, 140 can be carried out by means of rivets R1, R2, as shown in FIG. 2B, or by any fixing means known to those skilled in the art.
- the first friction washer 130 is fixed by rivets R1 through the orifices 134 of said washer and the orifices 135 formed in the annular web 104.
- the second friction washer 140 is fixed by rivets R2 through orifices 145 formed in the support disk 101 near the connecting fins 142 and the orifices 146 formed in the first guide ring 121.
- the orifices 134 of the first friction ring 130 and the orifices 135 of the annular web 104 may be orifices made according to the invention for receiving the rivets R1.
- the orifices 145 of the support disk 101 and 146 of the first guide ring 121 can be existing orifices, originally used for securing the first guide ring 121 with the second guide ring 122 via the support disk 101.
- the rivets R1 may be rivets originally used to attach components of the friction disk, for example the rivets used to secure the two guide rings together.
- the rivets R2 may be added rivets in the friction disk to fix the second friction washer 140 on the first guide ring 121. The use of rivets originally used to fix friction disc components together allows a mass gain of the friction disc.
- the two friction washers 130, 140 are stacked one on the other but fixed on different friction disc components. Each friction washer being secured to a component of the friction disc, it does not have angular play. However, as the first guide ring and the annular web are rotatable relative to each other, the two friction rings are also rotatable relative to each other. Thus, under the effect of pressure springs 124, the two friction washers are pressed against each other and, because of their mobility in relative rotation, rub against one another. The friction forces exerted by a friction washer on the other friction washer generate an effect of hysteresis intervening in the filtration of the acyclisms between the engine and the box of speed.
- FIG. 5 is a sectional representation of a friction disc according to the invention. This FIG. 5 shows the support disc 101 with the second integrated friction washer 140. It also shows the annular web 104 on which the first friction washer 130 is fixed by the rivets R1.
- At least one of the two friction washers comprises folds 133, 144 ensuring a slope of the fins 132, 142 with respect to the annular zone 131, 141.
- This slope of at least one of the friction washers associated with the reverse fixing of said friction washers (attachment of the first friction washer to the annular web and attachment of the second friction washer to the first guide washer), generates an intercrossing of the friction washers 130, 140 within the friction disc. This interlacing of the first friction washer 130 with the second friction washer 140, visible in FIG. 5, allows the relative friction of the two friction washers 130, 140.
- the invention relates to a motor vehicle clutch which comprises:
- reaction plate intended to be wedged in rotation on a driving shaft
- friction disk bearing friction linings intended to be wedged in rotation on a driven shaft
- a damping device equipped with first and second friction washers as described above and ensuring a relatively smooth torque transmission between the engine and the gearbox.
- the friction disc and the clutch according to the invention comprise various variants, modifications and improvements which will become obvious to those skilled in the art, it being understood that these variants, modifications and improvements are part of the scope of the invention. invention as defined by the following claims.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1662135A FR3060074B1 (fr) | 2016-12-08 | 2016-12-08 | Disque de friction d'embrayage et embrayage a friction comportant un tel disque |
PCT/EP2017/082077 WO2018104530A1 (fr) | 2016-12-08 | 2017-12-08 | Disque de friction d'embrayage et embrayage a friction comportant un tel disque |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3551908A1 true EP3551908A1 (fr) | 2019-10-16 |
Family
ID=58162821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17829948.3A Withdrawn EP3551908A1 (fr) | 2016-12-08 | 2017-12-08 | Disque de friction d'embrayage et embrayage à friction comportant un tel disque |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3551908A1 (fr) |
CN (1) | CN110062856B (fr) |
BR (1) | BR112019011147A2 (fr) |
FR (1) | FR3060074B1 (fr) |
WO (1) | WO2018104530A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109537971A (zh) * | 2018-12-28 | 2019-03-29 | 北京筑信润捷科技发展有限公司 | 一种摩擦耗能阻尼器 |
FR3094432B1 (fr) * | 2019-03-29 | 2022-06-03 | Valeo Embrayages | Amortisseur de torsion et disque d’embrayage. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4533031A (en) * | 1981-06-30 | 1985-08-06 | Kabushiki Kaisha Daikin Seisakusho | Clutch disk having alternatingly connected subplates between friction washers |
DE3903652A1 (de) * | 1989-02-08 | 1990-08-09 | Fichtel & Sachs Ag | Reibeinrichtung fuer kupplungsscheiben |
DE19624684A1 (de) * | 1995-06-22 | 1997-01-02 | Exedy Corp | Reibungserzeugender Mechanismus |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2741925B1 (fr) * | 1995-12-04 | 1998-01-09 | Valeo | Dispositif amortisseur de torsion, notamment pour vehicule automobile |
FR2849126B1 (fr) * | 2002-12-18 | 2006-01-06 | Valeo Materiaux De Friction | Disque porte-garnitures propre a la constitution d'un disque de friction d'embrayage notamment pour vehicule automobile et embrayage comportant un tel disque |
DE112008000251A5 (de) * | 2007-03-19 | 2009-10-22 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Drehschwingungsdämpfer |
FR2936850B1 (fr) * | 2008-10-06 | 2010-11-19 | Valeo Embrayages | Embrayage a friction a amortisseur symetrique, notamment pour vehicule automobile, comprenant des moyens d'amortissement differencies. |
FR3009852B1 (fr) * | 2013-08-26 | 2015-08-28 | Valeo Embrayages | Mecanisme d'amortisseur d'embrayage a amortisseur principal et pre-amortisseur et systeme d'embrayage associe |
CN203822939U (zh) * | 2014-03-05 | 2014-09-10 | 浙江吉利控股集团有限公司 | 双联减振器 |
WO2016097493A1 (fr) * | 2014-12-15 | 2016-06-23 | Valeo Embrayages | Dispositif de transmission de couple, notamment pour vehicule automobile |
KR101724471B1 (ko) * | 2015-05-26 | 2017-04-18 | 현대자동차 주식회사 | 진동 저감 댐퍼를 갖는 알터네이터 유닛 |
-
2016
- 2016-12-08 FR FR1662135A patent/FR3060074B1/fr not_active Expired - Fee Related
-
2017
- 2017-12-08 BR BR112019011147A patent/BR112019011147A2/pt active Search and Examination
- 2017-12-08 EP EP17829948.3A patent/EP3551908A1/fr not_active Withdrawn
- 2017-12-08 CN CN201780076202.6A patent/CN110062856B/zh active Active
- 2017-12-08 WO PCT/EP2017/082077 patent/WO2018104530A1/fr unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4533031A (en) * | 1981-06-30 | 1985-08-06 | Kabushiki Kaisha Daikin Seisakusho | Clutch disk having alternatingly connected subplates between friction washers |
DE3903652A1 (de) * | 1989-02-08 | 1990-08-09 | Fichtel & Sachs Ag | Reibeinrichtung fuer kupplungsscheiben |
DE19624684A1 (de) * | 1995-06-22 | 1997-01-02 | Exedy Corp | Reibungserzeugender Mechanismus |
Non-Patent Citations (1)
Title |
---|
See also references of WO2018104530A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR3060074B1 (fr) | 2019-01-25 |
BR112019011147A2 (pt) | 2019-10-01 |
CN110062856A (zh) | 2019-07-26 |
WO2018104530A1 (fr) | 2018-06-14 |
FR3060074A1 (fr) | 2018-06-15 |
CN110062856B (zh) | 2021-07-09 |
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