WO2007063247A1 - Ensemble de friction pour embrayage notamment de vehicule automobile - Google Patents
Ensemble de friction pour embrayage notamment de vehicule automobile Download PDFInfo
- Publication number
- WO2007063247A1 WO2007063247A1 PCT/FR2006/051246 FR2006051246W WO2007063247A1 WO 2007063247 A1 WO2007063247 A1 WO 2007063247A1 FR 2006051246 W FR2006051246 W FR 2006051246W WO 2007063247 A1 WO2007063247 A1 WO 2007063247A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- washer
- friction
- guide washers
- web
- friction assembly
- Prior art date
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
- 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
- F16F15/121—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 using springs as elastic members, e.g. metallic springs
- F16F15/123—Wound springs
- F16F15/1238—Wound springs with pre-damper, i.e. additional set of springs between flange of main damper and hub
-
- 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 friction assembly for clutch including motor vehicle.
- a clutch friction assembly may include:
- the main and secondary damping means can dampen the vibrations due in particular to motor acyclisms.
- the main damping means essentially act when a speed is engaged, and the secondary damping means act essentially when the gearbox is in neutral.
- Such a friction assembly has the particular disadvantage of having a high axial size, which makes it difficult to compatible with the geometric constraints inherent in particular to the design of certain powertrains.
- the present invention aims to overcome this particular disadvantage.
- - Main damping means comprising elastic means and two sets of friction, and - secondary damping means arranged radially inside said elastic means, one of said friction assemblies being located at least partly radially to the inside of said elastic means, the other friction assembly being located at least partly radially outside said elastic means.
- said friction assembly comprises two guide washers connected together by spacers, and a web interposed between said two guide washers and traversed by said spacers, this web comprising notches corresponding to said spacers allowing a limited rotation of said web relative to said webs; said two guide washers, said elastic means comprising a plurality of helical springs interposed between said web and said two guide washers; the friction assembly located at least partly radially inside said elastic means comprises a small washer with tabs interposed between one of the two guide rings and said web, a small elastic washer interposed between said one of the two guide washers and said small washer with tabs, and a small friction washer interposed between said web and the other of said two guide washers,
- said small friction washer comprises axially oriented fingers cooperating with said other one of said two guide washers,
- the friction assembly located at least partly radially outside said elastic means comprises a large washer with tabs disposed radially outside said web, a large spring washer interposed between one of the two guide rings and said large washer with tabs, and a large friction washer interposed between said large flanged washer and the other of said two guide washers,
- said large friction washer comprises axially oriented fingers cooperating respectively with said notches
- said notches have an asymmetric shape, and comprise on the one hand a profile rounded at one of their ends intended to cooperate with a spacer when the torque is transmitted from the gearbox to the engine, and on the other hand a tooth at the other of their ends for cooperating with a finger of said large friction washer when the torque is transmitted from the engine to the gearbox.
- FIG. 1 is an exploded perspective view of a friction assembly according to the invention
- FIG. 2 is a view from above of this friction assembly
- FIG. 3 is a view in axial section along the line 3-3 of FIG. 2 of this friction assembly
- FIG. 4 is a view from above of this friction assembly in torque transmission configuration from the engine to the gearbox ("direct" transmission mode); this figure comprises four angular sectors A, B, C and D for which, respectively: no part has been removed,
- FIG. 5 is a view similar to that of Figure 4, for a torque transmission configuration of the gearbox to the engine (transmission mode "retro").
- the friction assembly according to the invention comprises a first guide ring 1 at the periphery of which are arranged friction linings 3.
- a second guide ring 5 is connected to the first guide ring 1 by a plurality (5 in the example shown) of spacers 7.
- a web 9 is mounted between the first 1 and second 5 guide washers.
- This sail comprises at its periphery notches 11 traversed by the spacers 7.
- Helical springs 13 are arranged in housings 15 distributed in a circular manner on the web 9. These coil springs cooperate with housings 17 and 19 respectively formed in the guide rings 1 and 5.
- the sail 9 comprises in its center an orifice 21 adapted to receive a notched hub 23.
- the orifice 21 and the notched hub 23 are shaped so that it can rotate in a limited manner inside thereof. Edges 25, 27 formed in the central zones of the two guide rings 1, 5 as well as springs 31 of smaller size than the springs 13, are provided so as to damp the torque of rotation of the hub 23 relative to the web 9 .
- washers and springs form secondary damping means (or "pre-damping") known per se, and it is not useful to describe them in more detail in the context of the disclosure of the present invention.
- a large washer 33 comprising a plurality of tabs 35 is arranged radially outside the web 9, as is particularly visible in FIG. 3.
- the tabs 35 and the large washer 33 cooperate with grooves 37 formed in the first washer of FIG.
- the first guide ring 1 comprises, on a radially outer periphery, a progressive disc bearing friction linings 3 and comprising the grooves 37.
- a large elastic washer 39 of the "Belleville” washer type, is interposed between the first guide washer 1 and the flanged washer 33.
- the large elastic washer 39 is interposed between the progressive disc and the flanged washer 33.
- This large elastic washer 39 has a plurality of notches 41 cooperating with the spacers 7, preventing the rotation of this large elastic washer 39 relative to the first guide ring 1.
- the large elastic washer 39 bears on a shoulder 43 of the large tab washer 33.
- a large friction washer 45 is also interposed between the large flanged washer 33 and the second guide washer 5.
- This large friction washer 45 has fingers 47 folded axially, able to cooperate with the notches 11 of the web 9.
- notches 11 of the web 9 have a particular asymmetrical shape: these notches have in fact a rounded profile 48a at one of their ends, and a tooth 48b to the other end, whose function will be explained later.
- a small washer 49 comprising a plurality of tabs 51 is disposed between the first guide washer 1 and the web 9, as is particularly visible in FIG. 3.
- the tabs 51 of this small washer 49 cooperate with orifices 53 formed in the first guide ring 1.
- a small elastic washer 55 is interposed between the first guide washer 1 and the small lug washer 49.
- a small friction washer 57 is also interposed between the web 9 and the second guide washer 5.
- This small friction washer 57 has fingers 59 folded axially, able to cooperate with the second guide ring 5.
- the large elastic washer 39, the large washer with legs 33 and the large friction washer 45 on the one hand, and the small elastic washer 55, the small washer with tabs 49 and the small friction washer 57 on the other hand form two friction assemblies which, in combination with the springs 13, define primary damping means, also called "primary" means.
- This friction assembly is intended to be placed inside a clutch interposed between a driving shaft (also called “primary”) and a driven shaft (also called “secondary”).
- the first guide washer 1 is intended to be coupled in rotation to the drive shaft via the friction linings 3 clamped by pressure plates (not shown). When this coupling is performed, the two guide washers 1 and 5, as well as the large elastic washer 39, the large tab washer 33, the small spring washer 51 and the small tab washer 49 rotate together.
- the web 9 can in turn oscillate in rotation with respect to the aforementioned members, within the limit authorized by the circumferential length of the notches 11.
- the two sets of friction (large elastic washer 39, large washer with tabs 33 and large friction washer 45 on the one hand, and small elastic washer 55, small washer with legs 49 and small washer of friction 57 on the other hand) forming part of the main damping means, are active.
- the web 9 can therefore be subjected to a regime of damped oscillations constituting a first level of damping of jolts and vibrations transmitted by the shaft leading to the first washer. guidance 1.
- the smaller springs 31 and the borders 25, 27 of the two guide washers 1, 5 allow them to establish a damped oscillation regime of the hub 23 relative to the web 9.
- the damping means of the rotation of the hub 23 relative to the sail 9 are sized to absorb the jolts and vibrations of the drive shaft essentially when the gearbox is in neutral , while the damping means of the rotation of the web 9 relative to the guide washers 1 and 5 are dimensioned so as to allow the absorption of jolts and vibrations of the driving shaft essentially when a speed is engaged.
- the friction assembly comprising the large elastic washer 39, the large tab washer 33 and the large friction washer 45 are arranged radially outside the coil springs 13.
- the secondary damping means 23, 25, 27, 31 the friction assembly comprising the small elastic washer 55, the small washer to lugs 49 and the small friction washer 57, the elastic means 13 of the main damping means, and finally the friction assembly comprising the large elastic washer 39, the large lug washer 33 and the large friction washer 45.
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- 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
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0619046A BRPI0619046A8 (pt) | 2005-11-30 | 2006-11-29 | conjunto de fricção para embreagem |
DE112006003263.1T DE112006003263B4 (de) | 2005-11-30 | 2006-11-29 | Reibeinheit für eine Kupplung, insbesondere für Kraftfahrzeuge |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0553651 | 2005-11-30 | ||
FR0553651A FR2894003B1 (fr) | 2005-11-30 | 2005-11-30 | Ensemble de friction pour embrayage notamment de vehicule automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007063247A1 true WO2007063247A1 (fr) | 2007-06-07 |
Family
ID=36992599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2006/051246 WO2007063247A1 (fr) | 2005-11-30 | 2006-11-29 | Ensemble de friction pour embrayage notamment de vehicule automobile |
Country Status (4)
Country | Link |
---|---|
BR (1) | BRPI0619046A8 (fr) |
DE (1) | DE112006003263B4 (fr) |
FR (1) | FR2894003B1 (fr) |
WO (1) | WO2007063247A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2558907A1 (fr) * | 1984-01-28 | 1985-08-02 | Fichtel & Sachs Ag | Disque d'embrayage pour un embrayage a disque de friction pour vehicule automobile |
EP0189249A1 (fr) * | 1985-01-10 | 1986-07-30 | Automotive Products Public Limited Company | Amortisseur de vibrations de torsion |
FR2660721A1 (fr) * | 1990-04-10 | 1991-10-11 | Fichtel & Sachs Ag | Amortisseur d'oscillations de torsion. |
FR2728643A1 (fr) * | 1994-12-23 | 1996-06-28 | Valeo | Dispositif d'amortissement de torsion |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2726618B1 (fr) | 1994-11-08 | 1996-12-13 | Valeo | Amortisseur de torsion, notamment friction d'embrayage pour vehicule automobile |
FR2854671B1 (fr) | 2003-05-05 | 2006-04-28 | Valeo Embrayages | Embrayage a friction, en particulier pour un vehicule automobile |
-
2005
- 2005-11-30 FR FR0553651A patent/FR2894003B1/fr active Active
-
2006
- 2006-11-29 DE DE112006003263.1T patent/DE112006003263B4/de active Active
- 2006-11-29 BR BRPI0619046A patent/BRPI0619046A8/pt active Search and Examination
- 2006-11-29 WO PCT/FR2006/051246 patent/WO2007063247A1/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2558907A1 (fr) * | 1984-01-28 | 1985-08-02 | Fichtel & Sachs Ag | Disque d'embrayage pour un embrayage a disque de friction pour vehicule automobile |
EP0189249A1 (fr) * | 1985-01-10 | 1986-07-30 | Automotive Products Public Limited Company | Amortisseur de vibrations de torsion |
FR2660721A1 (fr) * | 1990-04-10 | 1991-10-11 | Fichtel & Sachs Ag | Amortisseur d'oscillations de torsion. |
FR2728643A1 (fr) * | 1994-12-23 | 1996-06-28 | Valeo | Dispositif d'amortissement de torsion |
Also Published As
Publication number | Publication date |
---|---|
DE112006003263T5 (de) | 2008-12-11 |
FR2894003A1 (fr) | 2007-06-01 |
DE112006003263B4 (de) | 2018-10-31 |
BRPI0619046A8 (pt) | 2018-05-08 |
FR2894003B1 (fr) | 2008-10-24 |
BRPI0619046A2 (pt) | 2011-09-20 |
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