• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Pendulum damping device (1), comprising; - a support (2) movable about an axis of rotation (X), - at least one pendular body (3), movable relative to the support (2) and - a noise attenuation system (30) producing during an impact of the pendulum body (3) on the support (2), arranged axially on each side of the support and axially clamping the support (2).
    公开号:FR3049034A1
    申请号:FR1652376
    申请日:2016-03-21
    公开日:2017-09-22
    发明作者:Michael Hennebelle；Giovanni Grieco；Roel Verhoog；David Salvadori
    申请人:Valeo Embrayages SAS；
    IPC主号:
    专利说明:

    Pendulum damping device
    The present invention relates to a pendular damping device, in particular for a motor vehicle transmission system.
    In such an application, the pendulum damping device can be integrated with a torsion damping system of a clutch capable of selectively connecting the heat engine to the gearbox, in order to filter the vibrations due to the acyclisms of the engine. Such a torsion damping system is for example a double damping flywheel.
    Alternatively, in such an application, the pendulum damping device may be integrated with a friction disc of the clutch or a hydrodynamic torque converter or a flywheel secured to the crankshaft or a double clutch dry or wet.
    Such a pendular damping device conventionally implements a support and one or more pendular bodies movable relative to this support, the displacement relative to the support of each pendulum body being guided by two rolling members cooperating on the one hand with bearing tracks secured to the support, and secondly with rolling tracks secured to the pendulum body.
    When starting or stopping the engine of the vehicle, low speeds can cause desynchronization of the pendulum bodies relative to the support, so that these pendular bodies can drop radially and strike against the support. Such a shock can cause vibrations of the support and / or undesirable noises. Such noises and / or undesirable vibrations may also occur during shocks between the pendular body and the support after the displacement of this pendulum body to filter a torsional oscillation.
    There is a need to reduce, in particular eliminate, the above disadvantages occurring especially during radial fall (s) of a pendular body on the support of a pendular damping device. The object of the invention is to meet this need and it achieves this, according to a first aspect, with the aid of a pendulum damping device comprising: a support movable about an axis of rotation; a pendular body movable relative to the support and - a noise attenuation system occurring during the impact of the pendular body against the support, this system being disposed axially on each side of the support and axially clamping the latter.
    The presence of the attenuation system makes it possible to pinch the support, which limits the vibrations of the latter following a shock of the pendular body on the latter. The attenuation system can thus act as a filter for these vibrations. This overcomes the problems identified above occurring for example when starting or when stopping the engine of the vehicle. Frequencies between 1000 Hz and 3000 Hz can for example be filtered. For the purposes of the present application: - "axially" means "parallel to the axis of rotation of the support", - "radially" means "along an axis belonging to a plane orthogonal to the axis of rotation of the support and intersecting this axis of rotation of the support ", -" angularly "or" circumferentially "means" around the axis of rotation of the support ", -" orthoradially "means" perpendicular to a radial direction ", -" integral "means" rigidly coupled ', - the resting position of a pendular body is that in which the pendulum is centrifuged without being subject to torsional oscillations from the acyclisms of the engine, and - the radial dimension of an element is the difference between (i) the largest distance from this element to the axis of rotation, and (ii) the smallest distance from this element to the axis of rotation.
    According to a first example of implementation of the invention, the attenuation system comprises a first part arranged axially of a first side of the support and a second part arranged axially of a second side of the support, the first part and the second part being separate parts secured to the support.
    The first part of the attenuation system and the second part of the attenuation system may both have the same shape when viewed perpendicularly to the axis of rotation.
    The joining between the first and second parts can be done without the help of additional piece. One of these parts for example male forms while the other of these parts bears female shapes, and these forms cooperate to allow this attachment, in particular by snapping.
    Alternatively, the connection between these first and second parts can be via connecting means, for example rivets or screws.
    In another variant, the connection between these first and second parts can be done via the support on which each of the first and the second part is fixed. Each part has for example pins cooperating in holes of the support to fix said part on the support.
    According to a second example of implementation of the invention, the attenuation system comprises a first part arranged axially on a first side of the support, and a second part arranged axially on a second side of the support, the first part and the second part forming a single piece overmolded on the support. Overmolding is for example carried out by three-dimensional printing on the support. Similarly to what has been mentioned in relation to the first example of implementation of the invention, the first and the second part of the attenuation system may have the same shape, when observed perpendicularly to the axis of rotation.
    According to this second example, the area of the support on which the noise attenuation system is overmoulded may comprise through-holes and these holes are then plugged by the overmolded material. This ensures a strong cohesion between the support and the noise attenuation system.
    According to either of the embodiments above, each part of the attenuation system may be made of plastic, for example PA66, PA64, Hvtrel®, a thermoplastic alloy or an elastomer, this list is not limiting.
    In all of the above, each of the first portion and the second portion of the attenuation system may be arranged to prevent radial overlap between the pendulum body and the attenuation system. As a result, the attenuation system remains permanently disposed radially below the pendulum body.
    The noise attenuation system can limit the radial displacement inwardly of the pendulum body, allowing, given the material in which this attenuation system is made to also damp the radial fall of the pendulum body against the support.
    A damping member of complementary abutment can in this case be provided, this damping member coming into abutment then allowing to dampen the abutment of the pendulum body against the support in the following positions: - the position to the result of a displacement in the counterclockwise direction of the pendulum body from the rest position to filter a torsion oscillation, and / or - the position at the end of a displacement in the non-trigonometric direction of this body pendular from the home position to filter a torsional oscillation.
    This damping member of complementary abutment is then carried by the pendular body and adapted to come simultaneously in contact with the pendulum body and the support for all or part of the aforementioned relative positions of the pendular body relative to the support.
    Each damping member of complementary abutment can be dedicated to a connecting member of the pendulum body when the latter has two pendulum masses interconnected by such a connecting member. Each damping member of complementary abutment may have elastic properties for damping shocks related to the abutment of the pendulum body against the support. This damping is then allowed by a compression of the damping member coming into complementary abutment, the latter being for example elastomer or rubber.
    When no axial overlap exists between the noise damping system and the pendulum body, at least one of the pendulum body and the support can carry at least one axial interposition piece, this axial interposition piece being in particular a coating deposited on the support or on the pendular body. In a variant, the axial interposition piece may be a pad carried by the support or by the pendular body. This pad can be made of plastic and it can be hung on the support, respectively on the pendulum body, via one or more fastening lugs mounted in one or more holes of the support, respectively of the pendular body. Such an interposition piece can thus limit the axial displacement of the pendular body relative to the support, thus avoiding axial shocks between said parts, and thus wear and unwanted noises, especially when the support and / or the pendulum are made of metal.
    Alternatively, each of the first and second portions of the noise attenuation system may be arranged to provide radial overlap between the radially outer zone of the noise attenuation system and the radially inner region of the pendulum body. Each part of the noise attenuation system can then have a reduced axial dimension, at the point where the radial overlap with the pendulum body occurs to release the axial space necessary for the displacement of this pendulum body. This radial overlap can allow each part of the attenuation system to form an axial interposition piece, thus replacing the aforementioned pads.
    The displacement of the pendular body relative to the support can be guided by two rolling members in which case the damping device is called "two-wire".
    Each rolling member cooperates for example with at least one first running track secured to the support and with at least one second running track integral with the pendulum body. Each rolling member cooperates for example with the running track (s) integral with the support and with the running track (s) integral with the pendular body only via its outer surface.
    Each rolling member is for example a roll of circular section in a plane perpendicular to the axis of rotation of the support. This roll may comprise several successive cylindrical portions of different radius. The axial ends of the roll may be devoid of a thin annular flange. The roller is for example made of steel. The roll may be hollow or full.
    In all the foregoing, the device comprises for example a number of pendulum bodies between two and eight, including three, four, five or six pendulous bodies. All these pendular bodies may succeed one another circumferentially. The device may thus comprise a plurality of planes perpendicular to the axis of rotation in each of which all the pendular bodies are arranged.
    In all that precedes the shape of the aforementioned first and second runways may be such that each pendular body is only displaced relative to the support in translation about a fictitious axis parallel to the axis of rotation of the support.
    As a variant, the shape of the rolling tracks may be such that each pendular body is displaced with respect to the support both: in translation about a fictitious axis parallel to the axis of rotation of the support and also in rotation around the center of gravity of said pendulum mass, such a movement being again called "combined movement" and disclosed for example in the application DE 10 2011 086 532.
    In all the foregoing, the pendular damping device may comprise two integral supports and the pendulum body may comprise only a single pendular mass disposed axially between the two supports, or, if appropriate, several pendular masses secured to one another and arranged axially. between the two supports. In this case, each support may comprise a noise attenuation system occurring during an impact of the pendular body against this support, said system axially clamping this support. In a variant, the noise attenuation system associated with each support is arranged axially only on the side of this support which is opposite the pendulum body.
    As a variant, in all the foregoing, the pendulum body may comprise a first pendulum mass arranged axially on one side of the support and a second pendulum mass disposed axially on a second side of the support and at least one connecting member solidifying this first and second pendulum mass.
    When the pendulum body comprises two pendular masses, the first part of the noise attenuation system may be arranged axially between the support and the first pendulum mass and the second part of said system may be arranged axially between the support and the second pendulum mass.
    With such a pendular body with two pendular masses, the radially outer zone of the first part of said system may have a reduced axial dimension, so as to increase the axial distance between the first pendulum mass and said radially outer zone, and the radially outer zone. the second part of said system may have a reduced axial dimension, so as to increase the axial distance between the second pendulum mass and said radially outer zone. As already mentioned, it is made here so that the radial overlap between the radially outer zone of the noise attenuation system and the radially inner zone of the pendular masses does not affect the displacement of these pendulum masses, and therefore the filtering performance. provided by the pendulum damping device.
    Still when the pendulum body comprises two pendular masses, at least one damping member coming into abutment of the pendulum body against the support can be connected to each part of the noise attenuation system. This abutment damping member is for example directly attached to each part of the noise attenuation system. Alternatively, the abutting damping member and each portion of the noise attenuation system are indirectly connected via the holder.
    Each abutment damping member may then be carried by the support and disposed axially between the first pendulum mass and the second pendulum mass of the body. Each abutment damping member is for example housed in the thickness of the support, being able to protrude locally beyond this thickness.
    Two abutment damping members carried by the support are for example dedicated to each pendulum body.
    Each of these abutment damping members carried by the support may be adapted to come into simultaneous contact with the pendulum body and the support for relative positions of the pendular body relative to the support, these relative positions comprising - the position at the result of a displacement in the counterclockwise direction of the pendulum body from the rest position to filter a torsion oscillation, and / or - the position at the end of a displacement in the non-trigonometric direction of this body pendulum from the rest position to filter a torsional oscillation, and / or - the position resulting from a radial fall of the pendulum body, for example when stopping or starting the engine of the vehicle.
    Each abutment damping member is for example made of elastomer. This abutment damping member is for example disposed at least partly in a window receiving a connecting member of the pendulum body.
    Each abutment damping member comes for example in contact with a connecting member for all or part of the relative positions of the pendular body relative to the aforementioned support.
    In addition to these damping members coming into abutment, each pendular body may carry an additional abutment damping member, being able to bear against the radially outer edge of the support, to participate in the damping of the abutment for all or part of the relative positions of the pendular body relative to the support mentioned above.
    When the pendulum body comprises two pendular masses and abutting damping members connected to the parts of the noise attenuation system are present, each of these abutment damping members can present successively when one moves radially outwards: a first portion of a first axial dimension, and a second portion of a second axial dimension, the second axial dimension being smaller than the first axial dimension. A chamfer is for example formed at the second portion of the abutment damping member. Such a configuration of these abutment damping members makes it possible to promote the creep of plastic material towards the pendulum masses, when this abutting damping member is compressed, and thus makes it more difficult to creep plastic material to parts of the noise attenuation system.
    According to a first preferred embodiment, the rolling member cooperates with a single first raceway and with only one second raceway, and the second raceway is defined by the connecting member of the pendular body. A portion of the contour of this connecting member defines for example the second rolling track. Alternatively, a coating may be deposited on this portion of the contour of the connecting member to form the second raceway. Such a connecting member is for example force-fitted via each of its axial ends into an opening in one of the pendular masses. Alternatively, the connecting member may be welded or screwed or riveted via its axial ends on each pendulum mass.
    According to the first preferred embodiment, the displacement of each pendular body relative to the support can be guided by at least two rolling members, in particular exactly two rolling members. Two connecting members each cooperating with a rolling member may be provided.
    Each rolling member can then be stressed only in compression between the first and second raceways mentioned above. These first and second raceways cooperating with the same rolling member may be at least partly radially opposite, that is to say that there are plans perpendicular to the axis of rotation in which these tracks both extend.
    According to the first preferred embodiment, each rolling member can be received in a window of the support already receiving a connecting member and receiving no other rolling member. This window is for example defined by a closed contour, a portion of which defines the first rolling track secured to the support which cooperates with this rolling member.
    According to a second preferred embodiment, the rolling member cooperates on the one hand with a single first raceway secured to the support, and on the other hand with two second raceways integral with the pendulum body. Each pendulum mass then has an opening of which part of the contour defines one of these second raceways.
    According to this second preferred embodiment, each connecting member includes for example several rivets, and this connecting member is received in a window of the support, while the rolling member is received in an opening of the support, distinct from a window receiving a liaison member.
    According to this second preferred embodiment, two rolling members can guide the displacement of the pendular body relative to the support, and each rolling member cooperates with a first rolling track dedicated to this rolling member and with two second running tracks dedicated to this running gear.
    According to this second preferred embodiment, each rolling member can then comprise successively axially: a portion disposed in an opening of the first pendulum mass and cooperating with the second rolling track formed by a part of the contour of this opening, a portion disposed in an opening of the support and cooperating with the first raceway formed by a portion of the contour of this opening, and - a portion disposed in an opening of the second pendulum mass and cooperating with the second raceway formed by a portion of the contour of this opening.
    According to this first example of implementation, there is a single support guiding via its second part the displacement of the pendular bodies.
    Regardless of the number of supports of the device and regardless of whether each pendulum body has two pendulum masses, each of the first and second parts of the noise attenuation system may have a plurality of circumferentially circumferentially closed contour cavities and not intended to receive means for fixing the support of said part of the attenuation system and / or means for fixing said part of the attenuation system to the other part of the attenuation system.
    Two successive cavities can be separated by material bridges forming radial ribs. Such cavities can give the noise attenuation system radial flexibility while maintaining the axial stiffness desired for the latter. Such cavities are thus not used for fixing the noise attenuation system on the support but other cavities could be provided in said system for this purpose.
    As a variant, each of the first part and the second part of the noise attenuation system may have no closed contour cavity, since such cavities are not intended to receive fastening means. In other words, all the cavities in the system serve to fix the latter on the support and / or to fix the first part of the system to the second part of the system.
    In all of the above, the radial dimension of each part of the noise attenuation system may be small compared to that of the support. The radial dimension of each part of the attenuation system represents for example between 10% and 30% of the radial dimension of the support.
    As a variant, the radial dimension of each part of the attenuation system may be greater relative to that of the support, being for example between 30% and 60% of the radial dimension of the support.
    The noise attenuation system may extend radially to the radially inner edge of the support.
    The axial dimension of each part of the attenuation system may depend on the axial dimension of the pendulum body. In the case of a pendular body with two pendular masses connected to each other, the axial dimension of each part of the attenuation system may be between 0.5 mm and 1.2 times the axial dimension of a pendulum mass, being in particular between 2 mm and the axial dimension of the pendulum mass, better being between 2 mm and 0.8 times the axial dimension of the pendulum mass. According to another of its aspects, the invention also relates to a pendulum damping device comprising: two integral and axially offset supports, the two supports being able to rotate about an axis, at least one pendular body; comprising only a single pendulum mass arranged axially between the two supports, or several pendular masses secured together and arranged axially between the two supports, each support carrying a noise attenuation system occurring during the impact of the pendulum body against this support, this system being disposed axially at least one side of the support, in particular at least on the side of this support axially facing the pendular body, in particular only on the side of this support axially opposite the pendular body.
    Each system can then be formed by only one of the parts of the noise attenuation system according to the preceding aspect of the invention. All that has been mentioned above, in particular with respect to the characteristics of such a part of the noise attenuation system, still applies to this other aspect of the invention. According to another aspect, the invention provides a pendulum damping device comprising: a support movable about an axis of rotation, at least one pendular body movable relative to the support, and a system of attenuation of the noise occurring during the impact of the pendulum body against the support, this system being arranged axially at least on one side of the support.
    All or part of what has been mentioned above still applies to this other aspect of the invention. The invention further relates, in another of its aspects, a component for a transmission system of a motor vehicle, the component being in particular a double damping flywheel, a hydrodynamic torque converter, a flywheel integral with the crankshaft, or a clutch friction disk or a double clutch dry or wet, this component comprising a pendulum damping device as defined above.
    The support of the pendular damping device may then be one of: - a web of the component, - a guide washer of the component, - a phasing washer of the component, or - a separate support of said web, said washer of guide and said phasing washer.
    In the case where the device is integrated with a flywheel secured to the crankshaft, the support can be integral with this flywheel.
    The component is in particular a clutch friction disc. In such a case, the support can be connected to the hub of the friction disk, being in particular welded to the hub of this friction disk. The invention will be better understood on reading the following description of non-limiting examples of implementation thereof and on examining the appended drawing in which: FIGS. 1 to 6 show a device for pendulum damping according to a first variant of a first embodiment of the invention, Figure 1 being a perspective view of this device, Figure 2 a sectional view along II-II of Figure 1, the FIGS. 3 and 4 are isolated views of the noise attenuation system of FIGS. 1 and 2, respectively in the exploded state and in the assembled state, FIGS. 5 and 6 respectively representing the device when the pendular bodies are at rest. and when they have moved from the rest position to the stop against the support, - Figure 7 shows, similarly to Figure 1, a device according to a second variant of the first embodiment of the invention, - FIGS. 8 to 12 show a damping device according to a third variant of the first example of implementation of the invention, FIGS. 8 and 9 being respectively exploded and assembled views, FIG. 10 being a front view of a detail of this device, FIGS. 11 and 12 being a side view of what is shown in FIG. 10, respectively without and with the pendulum shown, FIGS. Device according to a second example of implementation of the invention, Figures 13 and 14 being partial views of the device, respectively in the exploded state and in the assembled state, and Figure 15 being a sectional view along XV -XV of Figure 14, and - Figure 16 shows another example of pendulum damping device integrated in a clutch friction disc.
    FIG. 1 shows a pendular damping device 1 according to a first variant of a first exemplary implementation of the invention.
    This device 1 is here intended to be integrated with a clutch friction disk, for example associated with a heat engine including two, three or four cylinders.
    The pendulum damping device 1 comprises in the example under consideration: a support 2 able to move in rotation about an axis X, and a plurality of pendular bodies 3 movable relative to the support 2.
    The support 2 is for example intended to be welded to the hub of the clutch friction disc.
    In the example considered, three pendulous bodies 3 are provided, being uniformly distributed around the periphery of the X axis.
    The support 2 is here made in one piece, having a plate shape extending between two substantially parallel sides 4.
    As can be seen in FIGS. 1 and 2, each pendulum body 3 comprises in the example under consideration: two pendulum masses 5, each pendulum mass 5 extending axially facing one side of the support 2, and two connecting members 6 solidarisant the two pendulum masses 5.
    The connecting members 6, also called "spacers", are in the example considered angularly offset.
    In Figures 1, 2 and 5, the pendular damping device 1 is at rest, that is to say, it does not filter the torsional oscillations transmitted by the propulsion chain due to the acyclisms of the engine .
    In the example of Figures 1 and 2, each end of a connecting member 6 is welded to a pendulum mass 5, so as to secure these two pendulum masses 5 In variants, each of these ends could be force-fitted into an opening in one of the pendulum masses 5. Each connecting member 6 extends in part in a window 19 formed in the support 2. In the example, the window 19 defines a blank space inside the support 2 this window 19 being delimited by a closed contour 20.
    The device 1 further comprises in the example in question rolling members 11 guiding the displacement of the pendular bodies 3 relative to the support 2. The rolling members 11 are for example rollers.
    In the example described, the movement relative to the support 2 of each pendulum body 3 is guided by two rolling members 11, each of them cooperating in the example of the figures with one of the connecting members 6 of the body pendulum 3.
    Each rolling member 11 cooperates here with a single first running track 12 integral with the support 2, and with a single second raceway 13 secured to the pendulum body 3 to guide the displacement of the pendulum body 3.
    In the example considered, each second raceway 13 is formed by a portion of the radially outer edge of a connecting member 6.
    Each first rolling track is defined by a portion of the contour 20 of a window 19.
    Each first rolling track 12 is thus disposed radially opposite a second rolling track 13, so that the same running surface of a rolling member 11 rolls alternately on the first rolling track 12 and on the second rolling track 13. The rolling surface of the rolling member 11 is here a cylinder of constant radius.
    As can be seen in Figures 1 and 2, damping members 22 abutment of the pendulum body 3 against the support 2 are provided. Each connecting member 6 is here associated with such an abutment damping member 22, each of these being configured to interpose between this connecting member 6 and the radially inner edge of the window 19 receiving this body member. link 6.
    According to the invention, a system for attenuating the noise occurring during an impact of the pendulum body 3 on the support 2 is provided. This attenuation system 30 is here arranged on each side of the support 2 and axially clamps this support 2.
    The attenuation system 30 here comprises a first part 31 arranged axially on one side of the support 2 and a second part 32 arranged axially on a second side of the support 2. Each part 31, 32 of the attenuation system 30 is for example plastic, in particular PA66, PA64, Hytrel®, a thermoplastic alloy or elastomer.
    The first part 31 and the second part 32 are, according to the first example of implementation, separate parts secured to the support 2. Each portion 31, 32 has according to the first variant, a small radial dimension, the latter being for example included between 10% and 30% of the radial dimension of the support. Each portion 31, 32 here has an annular shape, when observed perpendicular to the axis of rotation X. Each portion 31, 32 then extends between a radially inner circular edge 33 and a radially outer circular edge 34.
    FIGS. 1 to 6 show that each portion 31, 32 of the noise attenuation system 30 has, according to this first variant of the first embodiment of the invention, a plurality of cavities 37 of closed contour succeeding one another circumferentially. These cavities 37 are two by two separated by material bridges 38 forming radial ribs. It can be seen that these cavities 37 are not intended to receive fastening means between the parts 31 and 32 or the support.
    The connection between the first and second parts 31 and 32 is according to the example of Figures 1 to 6 using male shapes 40 carried by the first part 31 and which cooperate with female shapes 41 carried by the second part 32 The fastening is effected for example by snapping. The male shapes 41 still allow the attenuation system 30 to be hooked onto the support 2, as can be seen in FIG. 2.
    The male shapes 41 and the female shapes 42 may be disposed radially inwardly with respect to the cavities 37.
    It can be seen in FIGS. 1 to 6 that each portion 31 and 32 of the attenuation system 30 is arranged radially inwardly relative to the pendulum bodies 3. The attenuation system 30 then forms a stop for the radially inward displacement of pendular bodies 3, and the material in which these parts 31 and 32 are made allows a damping of the radial falls of the pendular bodies 3.
    FIG. 7 represents a second variant of the first exemplary implementation of the invention. The device 1 differs essentially from that described with reference to FIGS. 1 to 6 in that the first portion 31 and the second portion 32 of the attenuation system 30 do not have a closed contour cavity which is not intended to receive means similar to those previously described. There is thus not, according to this second variant, radial ribs associated with the recessed structures of the parts 31 and 32 according to the first variant.
    Figures 8 to 12 show a third variant of the first embodiment of the invention.
    According to this third variant, the pendular damping device 1 comprises only two pendulous bodies 3, and no longer three.
    It can also be seen that each part 31, 32 of the noise attenuation system 30 has a larger radial dimension, this dimension being between 30% and 60% of the radial dimension of the support 2. It can also be seen that the radially inner edge 33 of each portion 31, 32 extends to the radially inner edge of the support 2.
    According to this third variant, the securing of the first portion 31 to the second portion 32 is via the support 2. Each portion 31, 32 carries for example pins 44 which snap into holes of complementary shape formed in the support 2 .
    Contrary to what has been described with reference to the first and second variants of FIGS. 1 to 7, each part 31, 32 of the attenuation system 30 radially overlaps, via its radially outer zone 46, the radially inner zone of the pendulum bodies 3. [ to confirm]
    Each of said radially outer zones 46 may have a reduced axial dimension, so as to release the axial space necessary for the displacement of the pendular bodies 3.
    In the variant of FIGS. 8 to 12, it can be seen that each portion 31, 32 of the noise attenuation system 30 is connected to two abutting damping members 50 of the pendulum body 3 against the support 2. described example, each abutment damping member 50 is received at the bottom, radially speaking, of a window 19 of the support 2 already receiving a connecting member 6 of the pendulum body. Each abutment damping member 50 is here fixed by the same rivet 51 to both the two parts 31 and 32 of the attenuation system 30, and the support 2. Alternatively, a rod from one of the parts 31 or 32 may be hot riveted in a hole in the other of the portions 31 and 32 to provide simultaneous fixation with the abutting damping member 50 and with the support 2.
    Each abutment damping member 50 carried by the support is here disposed axially between the first pendulum mass 5 and the second pendulum mass 5 of the pendulum body 3.
    Each abutment damping member 50 is here made of elastomer.
    Each of these abutment damping members 50 is here configured to come into simultaneous contact with a connecting member of a pendulum body 3 and the support 2 for relative positions of this pendulum body 3 with respect to the support 2 which are: - the position at the end of a displacement in the trigonometric direction of this pendulum body 3 from the rest position to filter a torsion oscillation, and / or - the position at the end of a displacement in the non-trigonometric direction of this pendulum body 3 from the rest position for filtering a torsional oscillation, and / or - the position resulting from a radial fall of the pendulum body 3, for example when stopping or starting the engine thermal of the vehicle.
    It can also be seen in FIGS. 8 to 12 that each pendulum body 3 further carries an additional abutment damping member 52. This additional abutment damping member 52, for example also made of elastomer, is suitable for to bear against the radially outer edge of the support 2, to participate in the damping of the abutment of the pendulum body 3 against the support 2 for all or part of the aforementioned relative positions of the pendulum body 3 relative to the support 2.
    Moreover, it can be seen in FIGS. 10 and 11 that each abutment damping member 50 has in this third variant when one moves radially outward successively: a first portion 55 of first axial dimension, and a second portion 56 of second axial dimension, the second axial dimension being smaller than the first axial dimension.
    This thinning of the abutment damping member 50 makes it possible to promote the flow of plastic material towards the pendulum masses 5, when this abutting damping member 50 is compressed.
    We will now describe, with reference to Figures 13 to 15, a damping device 1 according to a second example of implementation of the invention.
    Contrary to what has been mentioned above, the first part 31 of the attenuation system 30, which is arranged axially on the first side of the support 2, and the second part 32 of this system, which is arranged axially on the second side of the support 2 , form a single piece overmolded on the support 2. The overmolding is for example made by printing in three dimensions on the support. Similarly to what has been mentioned in connection with the first embodiment of the invention of FIGS. 1 to 12, the first 31 and the second 32 part of the attenuation system 30 have the same shape, when observed perpendicularly to the axis of rotation X.
    According to this second example of implementation, and as visible in FIG. 15, the zone of the support 2 on which the attenuation system 30 is overmolded comprises through-holes and these holes are then plugged by the overmolded material, so as to forming material bridges 56 between each portion 31, 32 of the attenuation system 30 on the one hand. This ensures a strong cohesion between the different parts 31, 32 of the attenuation system 30 on the one hand, and between the support 2 and the noise attenuation system 30 on the other hand. The invention is not limited to the examples which have just been described.
    In the example of FIG. 16, which may concern both the first implementation example and the second exemplary implementation, the support 2 comprises two distinct parts 7 and 8.
    The first part 7 extends mainly radially inside the second part 8 and this first part 7 serves to physically connect the pendular damping device 2 to the rest of the transmission system, the hub 70 of a friction disc clutch in the example described. This connection is made for example by welding the first portion 7 of the support 2 on the hub 70. The second portion 8 of the support serves to guide the displacement of the pendular bodies 3, carrying a plurality of first tracks 12.
    The first part 7 of the support is here obtained by cutting the central zone of the second portion 8 of the support 2.
    Applications to components other than a clutch friction disc, for example a double damping flywheel, a hydrodynamic torque converter, a wet or dry dual clutch or a flywheel integral with the crankshaft are also possible.
    权利要求:
    Claims (11)
    [1" id="c-fr-0001]
    claims
    Pendulum damping device (1), comprising; - a support (2) movable about an axis of rotation (X), - at least one pendular body (3), movable relative to the support (2) and - a noise attenuation system (30) producing during an impact of the pendulum body (3) on the support (2), arranged axially on each side of the support and axially clamping the support (2).
    [2" id="c-fr-0002]
    2. Device according to claim 1, the attenuation system (30) comprising a first portion (31) arranged axially of a first side of the support (2) and a second portion (32) arranged axially on a second side of the support, the first part (31) and the second part (32) being separate parts secured to the support (2).
    [3" id="c-fr-0003]
    3. Device according to claim 1, the attenuation system (30) comprising a first portion (31) arranged axially of a first side of the support (2), and a second portion (32) arranged axially of a second side the support (2), the first part (31) and the second part (32) forming a single piece overmolded on the support (2).
    [4" id="c-fr-0004]
    4. Device according to claim 2 or 3, each of the first portion (31) and the second portion (32) being arranged to prevent any radial overlap between the pendulum body (3) and the attenuation system (30). ) noise.
    [5" id="c-fr-0005]
    5. Device according to any one of claims 2 to 4, the noise attenuation system (30) limiting the radial displacement inwardly of the pendulum body (3).
    [6" id="c-fr-0006]
    6. Device according to claim 2 or 3, each of the first (31) and the second (32) portion being arranged to allow a radial overlap between the radially outer zone (46) of the attenuation system (30). and the radially inner zone of the pendulum body (3).
    [7" id="c-fr-0007]
    7. Device according to any one of the preceding claims, the pendulum body (3) comprising a first pendulum mass (5) arranged axially of a first side of the support (2) and a second pendulum mass (5) arranged axially of a second side of the support (2) and at least one connecting member (6) solidarisant this first (5) and the second (5) pendulum mass.
    [8" id="c-fr-0008]
    8. Device according to any one of claims 2 to 7, each of the first and second part (31, 32) of the attenuation system (30) of the noise being connected to at least one damping member coming in abutment (50) of the pendulum body (3) against the support (2).
    [9" id="c-fr-0009]
    9. Device according to claims 7 and 8, the abutment damping member (50) being carried by the support (2) and arranged axially between the first pendulum mass (5) and the second pendulum mass (5). .
    [10" id="c-fr-0010]
    10. Device according to claim 8 or 9, each abutment damping member (50) having successively when moving radially outwardly a first portion (55) of first thickness, and a second portion ( 56) of second thickness, the second thickness being less than the first thickness.
    [11" id="c-fr-0011]
    11. Device according to any one of claims 2 to 10, each of the first part (31) and the second part (32) of the noise attenuation system having a plurality of cavities (37) of closed contour succeeding one another circumferentially and not intended to receive means for fixing the support (2) of said portion (31, 32) of the noise attenuation system (30).
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3222876B1|2019-10-23|Pendulum damping device
    EP3380750B1|2019-07-24|Pendulum damping device
    EP3207278B1|2019-04-10|Device for damping torsional oscillations
    EP3190310B1|2019-10-23|Pendulum damping device
    FR3046649A1|2017-07-14|PENDULAR DAMPING DEVICE
    FR3070737B1|2019-08-23|PENDULUM DAMPING DEVICE
    FR3050500A1|2017-10-27|PENDULAR DAMPING DEVICE
    FR3043157A1|2017-05-05|TORSION OSCILLATION DAMPING DEVICE
    EP3225877A1|2017-10-04|Mounting for pendulum damping device and pendulum damping device comprising such a mounting
    FR3045121A1|2017-06-16|PENDULAR DAMPING DEVICE
    FR3047530A1|2017-08-11|PENDULAR DAMPING DEVICE
    EP3163118B1|2018-03-21|Device for damping torsional oscillations
    FR3038953A1|2017-01-20|TORSION OSCILLATION DAMPING DEVICE
    FR3035464A1|2016-10-28|LATERAL-LATERAL STOP PENDULUM -BIMATIERE
    EP3207279B1|2019-06-12|Device for damping torsional oscillations
    EP3115639B1|2018-03-07|Device for damping torsional oscillations
    FR3021080A1|2015-11-20|TORSION OSCILLATION DAMPING DEVICE
    FR3045122A1|2017-06-16|PENDULAR DAMPING DEVICE
    FR3031560B1|2019-11-15|TORSION OSCILLATION DAMPING DEVICE
    FR3049033A1|2017-09-22|PENDULAR DAMPING DEVICE
    FR3049031A1|2017-09-22|PENDULAR DAMPING DEVICE
    FR3047784A1|2017-08-18|PENDULAR DAMPING DEVICE
    FR3059750B1|2019-11-29|PENDULAR DAMPING DEVICE
    FR3058196B1|2019-06-28|PENDULAR DAMPING DEVICE
    FR3032764A1|2016-08-19|TORSION OSCILLATION DAMPING DEVICE
    同族专利:
    公开号 | 公开日
    EP3222876B1|2019-10-23|
    KR20170109498A|2017-09-29|
    CN107218348B|2021-11-02|
    EP3222876A1|2017-09-27|
    FR3049034B1|2018-08-17|
    CN107218348A|2017-09-29|
    BR102017005555A2|2017-11-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102011086436A1|2010-12-20|2012-06-21|Schaeffler Technologies Gmbh & Co. Kg|Torsional vibration damper device for torque transmission device, has flange that is rotatably mounted around central axis, and stop-damping device has mounting section extending in axial direction|
    DE102012214214A1|2011-09-05|2013-03-07|Schaeffler Technologies AG & Co. KG|Centrifugal pendulum for oscillation damping of coupling device, has stopping element mounted on flange and connected with inner edge of masses along radial direction of pendulum, so that radial motion of masses is limited|
    FR2990736A1|2012-05-21|2013-11-22|Valeo Embrayages|TORQUE TRANSMISSION DEVICE FOR MOTOR VEHICLE|
    US4356884A|1981-08-31|1982-11-02|Reynolds Metals Company|Acoustical enclosure system|
    US9032837B2|2009-08-05|2015-05-19|Chrysler Group Llc|Pendulum absorber system|
    US8424659B2|2010-01-27|2013-04-23|GM Global Technology Operations LLC|Vibration absorber|
    DE102010029464A1|2010-05-28|2011-12-01|Zf Friedrichshafen Ag|Torsionsschwingungsdämpferanordnung and vibration damper device, in particular in a Torsionsschwingungsdämpferanordnung|
    WO2012079557A1|2010-12-15|2012-06-21|Schaeffler Technologies AG & Co. KG|Centrifugal force pendulum and clutch disc having the same|
    DE102012221265B4|2011-12-07|2017-05-24|Schaeffler Technologies AG & Co. KG|Centrifugal pendulum with damper|
    JP5949790B2|2014-01-14|2016-07-13|トヨタ自動車株式会社|Torsional vibration reduction device|
    FR3025275B1|2014-08-28|2016-11-04|Valeo Embrayages|TORSION OSCILLATION DAMPING DEVICE|DE102018201199A1|2018-01-26|2019-08-01|Zf Friedrichshafen Ag|absorber system|
    DE102018210293A1|2018-06-25|2020-01-02|Zf Friedrichshafen Ag|Torsional vibration damping arrangement|
    FR3085732B1|2018-09-11|2021-11-26|Valeo Embrayages|PENDULUM CUSHIONING DEVICE|
    DE102021109421A1|2020-05-12|2021-11-18|Schaeffler Technologies AG & Co. KG|Centrifugal pendulum|
    法律状态:
    2017-03-31| PLFP| Fee payment|Year of fee payment: 2 |
    2017-09-22| PLSC| Publication of the preliminary search report|Effective date: 20170922 |
    2018-03-29| PLFP| Fee payment|Year of fee payment: 3 |
    2020-03-31| PLFP| Fee payment|Year of fee payment: 5 |
    2021-03-30| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1652376|2016-03-21|
    FR1652376A|FR3049034B1|2016-03-21|2016-03-21|PENDULAR DAMPING DEVICE|FR1652376A| FR3049034B1|2016-03-21|2016-03-21|PENDULAR DAMPING DEVICE|
    EP17161246.8A| EP3222876B1|2016-03-21|2017-03-16|Pendulum damping device|
    BR102017005555-8A| BR102017005555A2|2016-03-21|2017-03-20|PENDULUM DAMPING DEVICE|
    KR1020170034558A| KR20170109498A|2016-03-21|2017-03-20|Pendulum damping device|
    CN201710169235.7A| CN107218348B|2016-03-21|2017-03-21|Pendulum type vibration damper|
    [返回顶部]