WO2021170757A1 - Dispositif amortisseur de torsion, siege pour dispositif amortisseur de torsion et procede de fabrication d'un amortisseur de torsion - Google Patents
Dispositif amortisseur de torsion, siege pour dispositif amortisseur de torsion et procede de fabrication d'un amortisseur de torsion Download PDFInfo
- Publication number
- WO2021170757A1 WO2021170757A1 PCT/EP2021/054754 EP2021054754W WO2021170757A1 WO 2021170757 A1 WO2021170757 A1 WO 2021170757A1 EP 2021054754 W EP2021054754 W EP 2021054754W WO 2021170757 A1 WO2021170757 A1 WO 2021170757A1
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- WIPO (PCT)
- Prior art keywords
- seat
- coaxial
- wall
- coaxial part
- orientation
- Prior art date
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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
- 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
- F16F15/1232—Wound springs characterised by the spring mounting
- F16F15/12326—End-caps for springs
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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
- 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
- F16F15/131—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 the rotating system comprising two or more gyratory masses
- F16F15/13142—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 the rotating system comprising two or more gyratory masses characterised by the method of assembly, production or treatment
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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
- 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
- F16F15/1203—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 manufacturing, e.g. assembling or testing procedures for the damper units
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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
- 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
- F16F15/131—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 the rotating system comprising two or more gyratory masses
- F16F15/133—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 the rotating system comprising two or more gyratory masses using springs as elastic members, e.g. metallic springs
- F16F15/134—Wound springs
- F16F15/13407—Radially mounted springs
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/0047—Measuring, indicating
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/46—Maintenance
Definitions
- Torsion damper device Seat for a torsion damper device and method of manufacturing a torsion damper
- the present invention relates to a torsion damper device, a seat for a torsion damper device and a method of manufacture of a torsion damper.
- damping devices concerned are of the type comprising two coaxial parts mounted in rotation with respect to each other against springs intervening circumferentially between them.
- Such a torsion damping device finds its application in particular in a clutch friction, in particular for a motor vehicle, in particular for trucks, or in a flywheel of such a motor vehicle, then commonly called double damping flywheel.
- the invention relates more particularly to the case where, between on the one hand at least one of the ends of at least one of the springs, and on the other hand one and the other of the coaxial parts, a seat intervenes circumferentially, a front part of which provides support for the spring, and a dorsal part of which supports against one and / or the other of the coaxial parts.
- Such seats can be mounted to pivot relative to the first and second coaxial parts about an axis parallel to the axis of rotation of the damping device.
- the seats sometimes called cups, allow the springs to work in good conditions, even at full torque, in particular by maintaining a certain parallelism between their ends.
- the seats are generally made of steel, typically of cast steel, and can optionally serve as a support for end caps made of elastic or plastic material which act as full torque stops before certain springs come to come in contiguous turns. They can also be made entirely of elastic or plastic material, and be made in particular by molding. [0008] These seats nevertheless tend to wear out and to widen at the level of their support zones which are in contact with the first and second coaxial parts, in particular in the upper part of their pivot, that is to say. that is to say the part of the pivot located radially outwards.
- This localized wear on the upper part of the pivots is caused by the friction of the seat against the first and second coaxial parts when the springs and the seats are subjected to significant centrifugal forces or to a significant pressure applied by the torque transmitted between the first and the second coaxial parts. the second coaxial part or when returning to neutral position (or zero torque).
- the present invention aims in particular to increase the life of the seats and to reduce the cost of manufacturing a torsion damping device.
- the invention relates to a torsion damper device comprising: a first coaxial part and a second coaxial part rotatably mounted with respect to each other around an axis of rotation (X), springs intervening circumferentially between the first coaxial part and the second coaxial part so as to elastically oppose a relative rotation of the first coaxial part and of the second coaxial part around the axis of rotation (X), a plurality of seats, each seat comprising on the one handa front part which rests against a spring end, and on the other hand a back part resting on the first coaxial part and / or the second coaxial part.
- one of the seats is a seat which can be mounted in a first orientation and in a second orientation, this seat being a used seat showing signs of wear.
- wear marks means wear marks visible to the naked eye.
- used shock absorber device means a shock absorber device which has already been used on a first vehicle in circulation and which has been placed in a recycling circuit due to alleged or observed failures during its use in the first vehicle .
- the used seat is mounted in the second orientation and has traces of wear caused by previous use in the first orientation.
- a seat can be mounted initially in two different positions and can be reused in one of the two positions so as to extend its life. This reduces the amount of waste in a used shock absorber device.
- a seat can be:
- the damping device with the used seat mounted in the second orientation is more economical while having damping properties substantially equivalent to an equivalent damping device provided only with new seats.
- each used seat comprises a dorsal face and at least one supporting relief protruding from the dorsal face and arranged to bear against the first coaxial part and / or the second coaxial part, the signs of wear being located more than 90% or entirely on said at least one support relief.
- the dorsal part of each used seat comprises a dorsal face and at least one support relief projecting from the dorsal face and arranged to bear against the first coaxial part and / or the second coaxial part, said at minus one support relief comprising, when observed in a plane perpendicular to the axis of rotation (X): - a vertex,
- traces of wear being located in part or in whole on the first wall.
- the second wall is able to cooperate with a support portion formed on the first coaxial part and / or on the second coaxial part so that the used seat is retained radially when it is subjected to centrifugal forces.
- the seats can be centrifuged and the radially outer walls of the support reliefs are pressed on the first part coaxial and / or the second coaxial part.
- Said at least one support relief extends in a direction parallel to the axis of rotation
- the top of the used seat comprises a demarcation separating the first wall and the second wall. This makes it easier to check during disassembly whether the wear is concentrated only on the first wall or whether the wear extends to both the first wall and the second wall. So when the wear is concentrated on the first wall on only one side of the boundary, the seat can be turned over for reuse. Conversely, if wear has spread to both sides of the boundary during the first use, the seat cannot be reused in the second orientation. Thus, the line visually indicates a limit that wear marks should not reach on first use if the seat is to be reused in the second orientation.
- the demarcation can be a groove.
- the demarcation can also be a line drawn on the top of the seat.
- the demarcation extends along an axis parallel to the axis of rotation X-The top may be a ridge extending along an axis parallel to the axis of rotation X and separating the first wall and the second wall. -The first wall and the second wall extend in a direction parallel to the axis of rotation X -The second wall is turned radially outwards so as to be retained radially by the bearing portion formed on the first coaxial part and / or on the second coaxial part. A portion turned radially outward does not necessarily extend strictly in the circumferential direction but may have a radial component.
- traces of wear of each used seat are located partly or totally outside the second wall. For example, more than 90% of the wear marks are located outside the second wall.
- the second orientation of the used seat in the torsion damping device corresponds to a rotation of the used seat of 180 degrees relative to its previous use in the first orientation. In other words, the used seat is reused upside down.
- -The spring associated with the used seat extends around a Y axis.
- the seat has an axis of rotation Y ’located substantially in the extension of the Y axis of the associated spring.
- the rotation of the used seat between its first orientation and its second orientation is around the Y ′ axis of the seat. -The rotation is a 180 degree rotation.
- the used seat comprises a front face arranged to come to bear against a spring end.
- the front face of the used seat is arranged perpendicular to the Y axis of the spring.
- -The used seat is a seat that swivels along an axis parallel to the axis of rotation
- X of the damping device and said at least one support relief is a pivoting projection.
- the used seat comprises a first axial wedging arrangement comprising axial wedging walls of the used seat relative to the first coaxial part and the second coaxial part, and a second axial wedging arrangement comprising also axial wedging walls of the used seat relative to the first coaxial part and the second coaxial part, the first axial wedging arrangement and the second axial wedging arrangement being arranged on either side of the pivoting projection, the axial wedging walls of the first axial wedging arrangement being arranged in the same planes as the axial wedging walls of the second axial wedging arrangement.
- the turning of the seat for its second use in the second orientation has no effect on the axial wedging of the components.
- the used seat has been used previously with the first axial wedging arrangement disposed radially outside the pivot projection and the used seat is used in the torsion damping device with the second axial wedging arrangement disposed radially outward. of the pivot protrusion.
- the pivoting projection formed on the dorsal part of the used seat is inserted into a first housing formed on the first coaxial part and / or a second housing formed on the second coaxial part, the pivoting projection being inserted in abutment in the first housing of the first coaxial part and / or in the second housing of the second coaxial part.
- the pivoting projection has the shape of a bar section.
- the used seat is made of metal, for example steel.
- One among the first coaxial part and the second coaxial part comprises two side washers integral in rotation with one another around the axis of rotation (X), and the other among the first part coaxial and the second coaxial part comprises an intermediate washer arranged around the axis of rotation (X) and axially between the two lateral washers, the springs of the torsion damping device being arranged in recesses of the intermediate washer and of the lateral washers of so as to compress circumferentially when the side washers and the intermediate washer of the damper move away from a relative angular position of rest, in other words when they rotate with respect to one another.
- first axial wedging arrangement and the second axial wedging arrangement each comprise a first rib and a second rib between which a slice of the intermediate washer is inserted.
- first rib comprises an outer wall against which one of the two lateral washers can bear axially and an inner wall against which the intermediate washer can bear axially.
- the second rib comprises an outer wall against which the other of the two side washers can bear axially and an inner wall against which the intermediate washer can bear axially.
- the edges of the two side washers are disposed axially on either side of the two ribs and a portion of the intermediate washer is disposed axially between the two ribs.
- the first axial wedging arrangement is symmetrical to the second axial wedging arrangement with respect to the axis of rotation Y 'of the used seat used for its passage from the first orientation to the second orientation.
- the used seat When observed along the Y axis of the spring, the used seat has an outline which has an axis of symmetry. -According to one embodiment, the used seat generally has an axis of symmetry as a whole.
- the axis of symmetry is the Y axis of the seat or the Y axis of the associated spring.
- the used seat comprises a mounting polarizer intended to prevent mounting of the used seat in the torsion damping device in the first orientation.
- the symmetry of the used seat is broken only by the mounting pin and / or signs of wear.
- the invention also relates to a seat (used or not) for a torsion damping device comprising on the one hand a front part which is intended to bear against a spring end, and on the other hand a part back which is intended to come to rest on a first coaxial part and / or a second coaxial part of the torsion damping device, in which the seat can be mounted in a first orientation and in a second orientation in the torsion damping device.
- This seat may have one or more of the following characteristics: -The dorsal part comprises a dorsal face and at least one support relief projecting from the dorsal face and arranged to bear against the first coaxial part and / or the second coaxial part, said at least one support relief comprising, when observed in a plane perpendicular to the axis of rotation (X):
- the first wall and the second wall are arranged on either side of an axis perpendicular to the dorsal face and passing through the top.
- the support relief extends in a direction parallel to the axis of rotation X
- the top of the seat comprises a demarcation separating the first wall and the second wall. As explained previously, it is easy to know whether signs of wear concern both walls or only one.
- the seat is a seat that swivels along an axis parallel to the axis of rotation X of the damping device and said at least one support relief is a pivoting projection.
- the dorsal part is arranged on a plane P and the support relief is a bar section having on one surface a substantially circular section of center C, the bar section forming an element of a pivot connection, the 'axis of the bar section passing through the center C of the bar section extending at a predetermined distance d not substantially equal to zero of the plane P.
- d> r / 3 we have d> r / 3, and preferably d> r / 2, in particular d> 2 r / 3, and in particular d> r.
- the seat comprises a first axial wedging arrangement comprising axial wedging walls of the seat relative to the first coaxial part and the second coaxial part, and a second axial wedging arrangement also comprising the axial wedging walls of the seat -in relation to the first coaxial part and the second coaxial part, the first axial wedging arrangement and the second axial wedging arrangement being arranged on either side of the pivoting projection, the wedging walls of the first axial wedging arrangement being arranged in the same planes as the axial wedging walls of the second axial wedging arrangement.
- the first axial wedging arrangement is symmetrical to the second axial wedging arrangement with respect to the axis of rotation Y 'of the seat used for its passage from the first orientation to the second orientation.
- the seat When viewed along the Y axis, the seat has an outline which presents an axis of symmetry.
- the seat generally has an axis of symmetry as a whole.
- the seat includes a mounting key.
- the seat can of course include any feature already mentioned above in connection with the torsion damper device.
- the invention also relates to a torsion damper device comprising:
- each seat comprising on the one hand a front part which bears against a spring end, and on the other hand a back part resting on the first coaxial part and / or the second coaxial part, in which at least one of the seats is a seat as described above.
- Said at least one of the seats is a used seat and shows signs of wear caused by a previous use in the first orientation.
- traces of wear are located in part or in whole on the first wall.
- the second orientation of the seat corresponds to a rotation of the seat of 180 degrees relative to the first orientation.
- the invention also relates to a method of manufacturing a torsion damper comprising a first coaxial part and a second coaxial part rotatably mounted with respect to one another around an axis of rotation X, springs housed in recesses of the first and second coaxial parts and intervening circumferentially between the first coaxial part and the second coaxial part so as to elastically oppose a relative rotation of the first coaxial part and of the second coaxial part about the axis of rotation X, a plurality of seats, each seat comprising on the one hand a front part which bears against a spring end and on the other hand a dorsal part resting on the first coaxial part and / or the second coaxial part, the manufacturing process comprising the following steps: providing a used seat showing signs of wear, mounting the used seat on a spring, inserting the assembly comprising the used seat and the spring in a recess of the first
- Each used seat is suitable for being mounted in a second orientation and in a first orientation.
- the used seat has been mounted according to the first orientation during a previous use, and the step of inserting the assembly comprising the used seat and the spring is such that the used seat is mounted according to the second orientation in the recesses of the first and second coaxial parts.
- each used seat comprises a dorsal face and at least one support relief projecting from the dorsal face and intended to bear against the first coaxial part and / or the second coaxial part, the relief d '' support comprising: - a summit,
- the step of inserting the assembly comprising the spring and the support seats being such that, when looking at the used seat in a plane perpendicular to the axis of rotation (X), the first wall is located in the torsion damping device radially inside the second wall.
- the second wall is devoid of signs of wear.
- the used seat comprises a first axial wedging arrangement and a second axial wedging arrangement intended to cooperate with first and second coaxial parts of the torsion damping device, the first axial wedging arrangement and the second axial wedging arrangement being located on either side of a pivoting projection of the used seat, the used seat having been used previously, in the first orientation, with the first axial wedging arrangement disposed radially outside the pivoting projection and the used seat being intended for use in the torsion damping device, according to the second orientation, with the second axial wedging arrangement disposed radially outside the pivot projection.
- said at least one support relief is formed in part or in whole by the pivoting projection.
- the used seat comprises a mounting key and, during the step of inserting the assembly comprising the used seat and the spring in the first and second coaxial parts, the assembly comprising the used seat and the spring passes through an assembly jig before being inserted into the recesses of the first and second coaxial parts, the assembly jig comprising an additional keying device, the additional keying device being arranged so that the assembly jig only allows the passage of the used seat in the second orientation.
- the used seat locator is formed on one of the first axial wedging arrangement and the second axial wedging arrangement.
- the manufacturing process comprises the following steps:
- one of the first coaxial part and the second coaxial part comprises two lateral washers integral in rotation with one another around the axis of rotation (X), and the other among the first coaxial part and the second coaxial part comprises an intermediate washer, the two side washers and the intermediate washer from the used shock absorber.
- it may be a method of repairing the used shock absorber.
- the invention also relates to the use of a used seat for the manufacture of a torsion damping device.
- the used seat and the torsion damping device may include one or more of the characteristics mentioned above.
- the used seat has been used previously in a first orientation and the used seat being used in a second orientation in the torsion damping device.
- FIG. 1 illustrates a prior art torsion damping device.
- FIG. 2 illustrates an assembly comprising a spring and two seats of another state-of-the-art torsion damping device.
- FIG. 3 illustrates a front view of a used seat of Figure 2.
- FIG. 4 illustrates a side view of a used seat of Figure 2.
- FIG. 5 illustrates the seat offset when it is subjected to centrifugal forces or when torque is transmitted.
- FIG. 6 illustrates a front view of a used seat of a first embodiment of the invention.
- FIG. 7 illustrates a side view, seen in a plane perpendicular to the axis of rotation of the shock absorber, of the used seat of Figure 6.
- FIG. 8 illustrates the principle of overturning the used seat in FIG. 6.
- FIG. 9 illustrates an assembly comprising a spring and two seats of a second embodiment of the invention.
- FIG. 10 illustrates a side view, seen in a plane perpendicular to the axis of rotation of the shock absorber, of a used seat of Figure 9.
- FIG. 11 illustrates a front view of the used seat of Figure 10.
- FIG. 12 illustrates a first assembly jig comprising a spring and two new seats.
- FIG. 13 illustrates the step of inserting the assembly comprising the spring and the seats.
- FIG. 14 illustrates a second assembly jig comprising a spring and two used seats, for manufacturing a torsion damping device according to the second embodiment.
- FIG 1 shows an example of a torsion damper device 1 known and disclosed in patent application FR3079580.
- the damping device 1 is here associated with a friction disc 2 and with a central hub 3 to form a clutch disc 1 intended to take place between the engine of a vehicle and its gearbox.
- the friction disc 2 has a circular friction lining.
- the friction lining is intended to be selectively pressed by a clutch mechanism against a fi> é flywheel. to the vehicle engine to transmit torque between the engine and the friction disc.
- the central hub 3 is for its part intended to be coupled in rotation, thanks to its internal splines, to the input shaft of the vehicle gearbox. A torque can thus be transmitted between the friction disc 2 and the central hub 3 or vice versa, via the torsion damper device 1.
- the torsion damping device 1 allows relative rotational movement around the X axis between the central hub 3 and the friction disc 2 to allow damping of torsional oscillations during torque transmission.
- the torsion damping device comprises, in the present example, five springs 4 disposed circumferentially around the central hub 3.
- the torsion damping device is adapted to compress the springs 4 between a first coaxial part 5 and a second coaxial part. 6 to ensure damping.
- the second coaxial part 6 consists of a pair of side washers 60 also called guide washers 60 which are integral in rotation with one another.
- the first coaxial part 5 comprises an intermediate washer 50, hereinafter referred to as the web 50, disposed axially between the two guide washers 60.
- the friction disc 2 is fixed to the web 50, for example by the intermediate rivets, and the two guide washers 60 are both fixed by rivets on the central hub 3, on either side of the web 5.
- the guide washers 60 and the web 50 thus constitute an axial stack of three discs with a possible relative rotation between the web 50 and the guide washers 60 which also corresponds, in the absence of a pre-damper, to the possible rotation between the friction disc 2 and the central hub 3.
- the web 50 has a window 7 and the guide washers 60 each have a window 8.
- the corresponding spring 4 is mounted in the windows 7, 8 so that its ends each cooperate with an edge of the window 7 and one edge of each window 8.
- the ends of the spring 4 cooperate with the windows 7, 8 by means of two seats 9 each placed at one end of the spring 4. Each of the seats 9 therefore bears against a edge of the window 7 and against an edge of each of the windows 8.
- Pivoting projections 10 are provided to allow pivoting of the seats 9 relative to the web 50 and relative to the guide washers 60.
- each spring 4 when a relative axial rotational movement takes place between the web 50 and the two guide washers 60, one of the seats 9 is compressed only by the web 50 and moves away from the edges of the windows 8 of the guide washers 60, while the other seat 9, on the opposite end of the spring 4, comes to rest only on the guide washers 60 while the edge of the window 7 of the veil 50 moves away.
- the spring 4 is in this way compressed during the relative movements between the web 50 and the guide washers 60 to ensure the function of torsion damping.
- the cooperation of the ends of the spring 4 with the web 50 and the guide washers 60 is optimized and made more reliable thanks to the seats 9 which allow the spring 4 to be held in place and provide an interface preventing the ends of the spring 4 from deteriorating too much on contact.
- the seats 9 also allow good guiding of the spring 4 thanks to the pivoting projections 10 ensuring compression of the spring 4 without parasitic force.
- the ends of the spring 4 remain substantially parallel to each other during its compression, thanks to the pivoting projections 10.
- the pivoting projection 10 bears jointly on three pivoting notches, namely the pivoting notch 53 of the web 50 in the center and, axially on either side of the latter, the two pivoting notches 63 guide washers 60.
- the housing created by the three pivot notches 53, 63 thus receives the pivot projection 10 allowing it to pivot about an axis extending axially, that is to say parallel to the axis rotation X
- the pivot notch 53 is provided on the corresponding edge of the window 7 and each pivot notch63 is provided on a corresponding edge of the window
- These seats 9 also include axial wedging arrangements, described below, comprising wedging walls which maintain the relative positions, along the axial direction, between the seat 9 and the web 50 and between the seat 9 and the guide washers 60.
- Each seat comprises a first wedging arrangement 120 and a second wedging arrangement 130 each comprising a first rib 121, 131 and a second rib 122, 132 between which a portion of the web 50 is inserted.
- the first rib 121, 131 comprises an outer wall 126, 136 against which one of the two side washers 60 can bear axially and an inner wall 123, 133 against which the web 50 can be supported axially.
- the second rib 122, 132 comprises an outer wall 128, 138 against which the other of the two side washers 60 can bear axially and an inner wall 125, 135 against which the veil 50 can be supported axially.
- edges of the two side washers 60 are disposed axially on either side of the two ribs 121, 122, 131, 132 and a portion of the web 50 is disposed axially between the two ribs.
- the pivot projection 10 When observed in a plane perpendicular to the axis of rotation (X), the pivot projection 10 comprises:
- this seat When it is mounted and the shock absorber is used, this seat therefore shows signs of wear 101 located partly or entirely on the outer wall due to the centrifugal forces and the attack forces of the seat by one of the coaxial parts, as explained previously.
- the outer wall is able to cooperate with a bearing portion formed on the first coaxial part or the second coaxial part so that the used seat is retained radially when it is subjected to centrifugal forces (FIG. 5 ).
- Figures 6 to 9 show a seat of a first embodiment of the torsion damping device.
- the first embodiment of the torsion damping device has coaxial parts 5, 6 and springs 4 of the same type as those illustrated in FIG. 1. Elements which are identical or perform the same function as the elements described above bear the same reference.
- the torsion damper device comprises a seat 9 which can be mounted in a first orientation 01 and in a second orientation 02, this seat 9 being a used seat mounted in the second orientation 02 and bearing traces of wear 101 caused by previous use in the first orientation 01.
- wear marks means wear marks visible to the naked eye.
- the seat 9 can be used initially in two different positions and be reused in one of the two positions so as to extend its life.
- the seat shown in Figures 6 and 7 is suitable for such reuse.
- This seat 9 comprises on the one hand a front part 9F which bears against a spring end 4, and on the other hand a back part 9D which bears on the first coaxial part 5 and / or the second coaxial part 6.
- the front part 9F comprises a front face arranged to bear against a spring end 4.
- the front face of the used seat 9 is arranged perpendicular to the Y axis of the spring.
- each used seat 9 comprises a back face 92 and at least one pivoting projection 10 projecting from the back face 92 and arranged to bear against the first coaxial portion 5 and / or the second portion coaxial 6.
- the signs of wear are located on the first wall 12, which is here on the top, that is to say radially on the outside when the seat is mounted in the shock absorber, as Figures 6 and 7 illustrate a worn seat in its first orientation.
- the seat is reused in a torsion damper according to the first embodiment of the invention so that its traces of 'wear 101 are located in part or in whole on the radially inner wall 12 (first wall 12).
- first wall 12 the second wall 11 which will be the most stressed during the “second use” of the seat, is itself in very good condition.
- the signs of wear 101 which are then found on the first wall 12 of the pivoting projection have no impact on the effectiveness of the torsion damping device.
- the passage from the first previous use of the seat in its first orientation 01 to its reuse (or second use) in its second orientation 02 is shown diagrammatically in FIG. 8.
- the second orientation 02 of the used seat 9 in the torsion damping device 1 corresponds to a rotation of the used seat by 180 degrees with respect to its first orientation 01 in the used shock absorber device.
- the spring associated with the used seat extends around a Y axis and the rotation of the used seat between its first orientation and its second orientation takes place around an axis Y 'of the seat substantially aligned with the Y axis of the spring with which he must cooperate.
- the used seat 9 is reused upside down.
- the traces of wear are located here entirely on the first wall 12.
- the second wall 11 is able to cooperate with a bearing portion 51 formed on the first coaxial part 5 and / or a second complementary bearing portion formed on the second coaxial part 6 so that the used seat 9 is retained radially when it is subjected to centrifugal forces.
- the pivot projection 10 extends in a direction parallel to the axis of rotation.
- the top S of the seat 9 is a ridge extending axially and separating the first wall and the second wall.
- the first wall 12 and the second wall 11 also extend in a direction parallel to the axis of rotation.
- the second wall 11 is located, relative to the axis of rotation X of the torsion damper and in the second orientation 02, radially outside the first wall 12.
- its second wall 11 is turned radially outwards so as to be held radially by the bearing portion formed on the first coaxial part 5 and / or the second complementary bearing portion formed on the second coaxial part 6.
- the traces of wear 101 of each used seat 9 are located entirely outside the second wall 11 when it is arranged to be reused in its second orientation.
- the X axis is shown in Figure 8 to distinguish the two orientations 01 and 02.
- the distance separating it from the seat 9 has of course been shortened.
- the used seat 9 comprises a first axial wedging arrangement 120 comprising axial wedging walls of the used seat relative to the first coaxial part 5 and the second coaxial part 6, and a second axial wedging arrangement 130 comprising walls axial wedging of the used seat relative to the first coaxial part 5 and the second coaxial part 6.
- the first axial wedging arrangement 120 and the second axial wedging arrangement 130 are arranged on either side of the pivoting projection 10.
- the axial wedging walls of the first axial wedging arrangement 120 are arranged in the same planes as the axial wedging walls of the second axial wedging arrangement 130.
- the used seat 9 has been used previously with the second axial wedging arrangement 130 disposed radially inside the pivoting projection and the used seat 9 is used in the torsion damping device with the first wedging arrangement 120 axial arranged radially inside the pivoting projection 10.
- the first wedging arrangement 120 and the second wedging arrangement 130 each comprise a first rib 121, 131 and a second rib 122, 132 between which a portion of the web 50 is inserted.
- the first rib 121, 131 comprises a first external wall 126, 136 against which one of the two lateral washers 60 can bear axially and a first internal wall 123, 133 against which the web 50 can be supported axially.
- the second rib 122, 132 comprises a second outer wall 128, 138 against which the other of the two side washers 60 can bear axially and a first inner wall 133, 135 against which the web 50peuts' press axially.
- pour mango Ubuntumentde axial wedging 120, 130 the edges of the two lateral washers 60 are disposed axially on either side of the two ribs 121, 122 131, 132 and a portion of the web 50 is disposed axially between these two ribs.
- the first axial wedging arrangement 120 is symmetrical to the second axial wedging arrangement 130 relative to the axis of rotation Y of the used seat used for its passage from the first orientation 01 to the second orientation 02.
- the axial wedging is identical in the first orientation 01 and the second orientation 02 of seat 9.
- the used seat 9 has an outline which has an axis of symmetry.
- the seat's axis of rotation Y ’ is therefore an axis of symmetry. Unlike the known seat of Figures 3 and 4, this seat can therefore be mounted according to the two orientations 01 and 02.
- the torsion damper device comprises a used seat 9 provided with a mounting key 98 intended to prevent reassembly of the used seat 9 in the torsion damper device in the first orientation 01.
- Figures 9 to 11 illustrate a used seat in its first orientation 01.
- the polarizer 98 of the used seat is here formed on the first axial wedging arrangement 120, on its ribs 121, 131.
- the polarizer here takes the form of cavities 98.
- the traces of wear are not concentrated on a pivoting projection but on a bearing relief of another type.
- the invention also relates to a method of manufacturing a torsion damper comprising a first coaxial part and a second coaxial part rotatably mounted with respect to one another around an axis of rotation X, springs housed in recesses of the first and second coaxial parts and intervening circumferentially between the first coaxial part and the second coaxial part so as to elastically oppose a relative rotation of the first coaxial part and of the second coaxial part about the axis of rotation X, a plurality of seats, each seat comprising on the one hand a front part which bears against a spring end and on the other hand a dorsal part resting on the first coaxial part and / or the second coaxial part, the manufacturing process comprising the following steps:
- each used seat 9 is adapted to be mounted in a first orientation 01 and in a second orientation 02, the used seat having been mounted in the first orientation in the used shock absorber device, and the step of disposing of the assembly comprising the used seat and the spring being such that the used seat is mounted in the second orientation in the recesses of the first and second coaxial parts.
- each used seat comprises a back face and at least one pivoting projection 10 projecting from the back face 92 and arranged to bear against the first coaxial part 5 and / or the second coaxial part 6 , the assembly comprising the used seat and the spring 4 being arranged so that said at least one pivoting projection 10 comprises, when observed in a plane perpendicular to the X axis:
- first wall 12 arranged radially inside the top S and connected to the second wall via the top S, the traces of wear 101 being located essentially, or even entirely, on the first wall 12 of said at least one pivoting projection 10.
- the used seat 9 comprises a first axial wedging arrangement 120 and a second axial wedging arrangement 130 intended to cooperate with the first and second coaxial parts 5 and 6 of the torsion damping device 1, the first axial wedging arrangement 120 and the second axial wedging arrangement 130 being located on either side of the pivoting projection 10 of the used seat 9, the used seat 9 having been used previously, in the first orientation 01, with the second axial wedging arrangement 130 disposed radially inside the pivot projection 10 and the used seat 9 being intended for use in the torsion damping device, according to the second orientation 02, with the first axial wedging arrangement 120 disposed radially inside the swivel protrusion 10.
- the used seat 9 comprises a mounting key 98 and the assembly comprising the used seat and the spring passes through a mounting jig before being introduced into the recesses of the first and second coaxial parts 5 and 6, the assembly jig comprising a complementary keying device cooperating with the assembly keying 98.
- a first assembly jig 201 can be used with new seats 9 provided with a polarizer 98.
- the complementary polarizer 198 of the first assembly jig 201 is arranged so that the first assembly jig 201 only allows the passage of the new seat 9 in the first orientation 01.
- a second mounting jig 202 can be used to reassemble the used seats in a torsion damper device.
- the complementary keying 298 of the second mounting jig 202 is arranged so that the second mounting jig 202 allows the passage of the used seat 9 only in the second orientation 02.
- the complementary keying 298 of the second jig assembly 202 is in a radially internal zone of the spring passage window while the complementary polarizer 198 of the first template of assembly 201 is in a radially outer region of the spring passage window.
- the seat cannot be reassembled in the "worn" position 01.
- the polarizer is here formed by two cavities 98 formed in the seat 9, more precisely in the axial wedging ribs 21 and 122.
- the complementary polarizer 198, 298 of the first and second mounting templates is a protuberance 198, 298.
- the cavity 98 slides around the protuberance 198, 298 during assembly of the assembly comprising the seats 9 and the spring 4 in the first and second coaxial parts.
- the cavity is formed on the mounting jig and the protuberance is formed on the seat.
- the manufacturing process can be implemented in two different contexts.
- shock absorbing devices are made with used seats 9.
- the used seats 9 then come from various used shock absorbers which have been dismantled and from which the used seats have been kept and stored to be reused.
- the used shock absorbers are repaired and their used seats 9 are wound upside down.
- dampers can for example have their side washers 60 and their intermediate washer 50 unchanged.
- FIG. 15 and 16 Another variant of the seat is shown in Figures 15 and 16.
- the seats pivot about an axis parallel to the 'axis of rotation X of the damping device and the support reliefs 10 are pivoting projections.
- the dorsal face 92 of the dorsal part 9D is arranged on a plane P and the support relief is a bar section having on one surface a substantially circular section of center C.
- the bar section forms an element of a pivot connection, the axis of the bar section passing through the center C of the bar section and extending at a predetermined distance d not substantially equal to zero of the plane P.
- a radius r of the substantially circular section of the bar section we ad> r / 3, and preferably d> r / 2, in particular d> 2r / 3, and in particular d> r.
- the friction disc can be mounted on a side washer and the central drive hub of the gearbox input shaft can be coupled to the web.
- the second coaxial part can be formed by a primary flywheel optionally provided with a cover and the first coaxial part can be formed by a web coupled to the secondary flywheel.
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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)
- Manufacturing & Machinery (AREA)
- Mechanical Operated Clutches (AREA)
- Springs (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/905,141 US20230114805A1 (en) | 2020-02-28 | 2021-02-25 | Torsion damper device, seat for a torsion damper device and method for manufacturing a torsion damper |
CN202180017630.8A CN115244314A (zh) | 2020-02-28 | 2021-02-25 | 扭转阻尼器装置、用于扭转阻尼器装置的座以及用于制造扭转阻尼器的方法 |
BR112022017117A BR112022017117A2 (pt) | 2020-02-28 | 2021-02-25 | Dispositivo amortecedor de torção, assento para dispositivo amortecedor de torção e processo de fabricação de um amortecedor de torção |
MX2022010662A MX2022010662A (es) | 2020-02-28 | 2021-02-25 | Dispositivo amortiguador de torsion, asiento para un dispositivo amortiguador de torsion y metodo para fabricar un amortiguador de torsion. |
EP21706986.3A EP4111072A1 (fr) | 2020-02-28 | 2021-02-25 | Dispositif amortisseur de torsion, siege pour dispositif amortisseur de torsion et procede de fabrication d'un amortisseur de torsion |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR2002046 | 2020-02-28 | ||
FR2002046A FR3107741B1 (fr) | 2020-02-28 | 2020-02-28 | Dispositif amortisseur de torsion et procédé de fabrication d’un amortisseur de torsion |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021170757A1 true WO2021170757A1 (fr) | 2021-09-02 |
Family
ID=70228329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/054754 WO2021170757A1 (fr) | 2020-02-28 | 2021-02-25 | Dispositif amortisseur de torsion, siege pour dispositif amortisseur de torsion et procede de fabrication d'un amortisseur de torsion |
Country Status (7)
Country | Link |
---|---|
US (1) | US20230114805A1 (fr) |
EP (1) | EP4111072A1 (fr) |
CN (1) | CN115244314A (fr) |
BR (1) | BR112022017117A2 (fr) |
FR (1) | FR3107741B1 (fr) |
MX (1) | MX2022010662A (fr) |
WO (1) | WO2021170757A1 (fr) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2627243A1 (fr) | 1988-02-11 | 1989-08-18 | Valeo | Dispositif amortisseur de torsion et volant pour transmission comportant un tel dispositif, notamment pour vehicule automobile |
EP0696694A1 (fr) | 1994-07-29 | 1996-02-14 | Aisin Seiki Kabushiki Kaisha | Disque absorbeur de couple de rotation |
DE19611507A1 (de) * | 1995-03-31 | 1996-10-02 | Valeo | Drehschwingungsdämpfer mit Metallsitzen für die Federn, insbesondere für Kraftfahrzeuge |
FR2875882A1 (fr) * | 2004-09-30 | 2006-03-31 | Valeo Embrayages | Siege a pivot deporte et amortisseur de torsion l'incluant |
EP2904290A1 (fr) | 2012-10-04 | 2015-08-12 | Valeo Embrayages | Dispositif d'amortissement de torsion a ressorts et sieges basculants |
EP3026293A1 (fr) | 2014-11-28 | 2016-06-01 | ZF Friedrichshafen AG | Ensemble de ressorts |
DE102018201536A1 (de) * | 2018-02-01 | 2019-08-01 | Zf Friedrichshafen Ag | Torsionsdämpfer für eine Kupplungsscheibe |
FR3079580A1 (fr) | 2018-03-30 | 2019-10-04 | Valeo Embrayages | Dispositif d'amortissement de torsion avec siege de ressorts a guidage axial |
-
2020
- 2020-02-28 FR FR2002046A patent/FR3107741B1/fr active Active
-
2021
- 2021-02-25 WO PCT/EP2021/054754 patent/WO2021170757A1/fr unknown
- 2021-02-25 US US17/905,141 patent/US20230114805A1/en active Pending
- 2021-02-25 BR BR112022017117A patent/BR112022017117A2/pt unknown
- 2021-02-25 EP EP21706986.3A patent/EP4111072A1/fr active Pending
- 2021-02-25 MX MX2022010662A patent/MX2022010662A/es unknown
- 2021-02-25 CN CN202180017630.8A patent/CN115244314A/zh active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2627243A1 (fr) | 1988-02-11 | 1989-08-18 | Valeo | Dispositif amortisseur de torsion et volant pour transmission comportant un tel dispositif, notamment pour vehicule automobile |
EP0696694A1 (fr) | 1994-07-29 | 1996-02-14 | Aisin Seiki Kabushiki Kaisha | Disque absorbeur de couple de rotation |
DE19611507A1 (de) * | 1995-03-31 | 1996-10-02 | Valeo | Drehschwingungsdämpfer mit Metallsitzen für die Federn, insbesondere für Kraftfahrzeuge |
FR2875882A1 (fr) * | 2004-09-30 | 2006-03-31 | Valeo Embrayages | Siege a pivot deporte et amortisseur de torsion l'incluant |
EP2904290A1 (fr) | 2012-10-04 | 2015-08-12 | Valeo Embrayages | Dispositif d'amortissement de torsion a ressorts et sieges basculants |
EP3026293A1 (fr) | 2014-11-28 | 2016-06-01 | ZF Friedrichshafen AG | Ensemble de ressorts |
DE102018201536A1 (de) * | 2018-02-01 | 2019-08-01 | Zf Friedrichshafen Ag | Torsionsdämpfer für eine Kupplungsscheibe |
FR3079580A1 (fr) | 2018-03-30 | 2019-10-04 | Valeo Embrayages | Dispositif d'amortissement de torsion avec siege de ressorts a guidage axial |
Also Published As
Publication number | Publication date |
---|---|
FR3107741B1 (fr) | 2022-06-03 |
FR3107741A1 (fr) | 2021-09-03 |
US20230114805A1 (en) | 2023-04-13 |
BR112022017117A2 (pt) | 2022-11-16 |
CN115244314A (zh) | 2022-10-25 |
EP4111072A1 (fr) | 2023-01-04 |
MX2022010662A (es) | 2022-09-23 |
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