• 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:
    The invention relates to a pendulum damping device (1) comprising at least one pendulum mass (12) movably mounted on a support (2a, 2b) intended to be rotated about an axis (A), characterized in that the support comprises first and second annular portions (2a, 2b) extending radially and offset, at least in part, axially with respect to each other, the pendulum mass comprising at least a central portion (12a) located axially between the two parts (2a, 2b) of the support and two lateral parts (12b), each situated on the other side of the corresponding part (2a, 2b) of the support, with respect to the central part ( 2a).
    公开号:FR3014983A1
    申请号:FR1362706
    申请日:2013-12-16
    公开日:2015-06-19
    发明作者:Franck Cailleret
    申请人:Valeo Embrayages SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a pendular damping device, in particular for a motor vehicle.
    [0002] Such a device, also called pendulum oscillator or pendulum, is particularly intended to equip a transmission of a motor vehicle. In a motor vehicle transmission, at least one torsion damping system is generally associated with a clutch capable of selectively connecting the engine to the gearbox. An internal combustion engine generates acyclisms because of the successive explosions in the cylinders of the engine, these acyclisms varying in particular as a function of the number of cylinders. The damping system conventionally comprises springs and friction elements whose function is to filter the vibrations due to the rotation acyclisms of the engine and occurs before the transmission of the engine torque to the gearbox. This prevents such vibrations pass into the gearbox and cause shock, noise and unwanted noise.
    [0003] In order to further improve the filtration, it is known to use a pendulum damping device, in addition to the usual damping system. The patent application FR 2 981 714, in the name of the Applicant, discloses a pendular damping device comprising an annular support intended to be rotated about its axis and pendular masses mounted at the outer periphery of the support. Each mass is driven in a pendulum movement in operation and comprises two parts, mounted axially on either side of the support and connected by three spacers each through an opening of the support. A roller is mounted between a raceway formed in each spacer and the edge of the corresponding opening of the support. The spacers are attached to both parts of the mass by riveting. The heads of the rivets are supported on the outer radial faces of the parts of the mass, that is to say on the opposite sides to the annular support. The spacers and the rollers are all located in the same radial plane. In response to rotational irregularities or acyclisms, each mass moves in such a way that its center of gravity oscillates in a pendulum fashion. The oscillation frequency of each mass is proportional to the rotational speed of the motor shaft, the corresponding multiple may for example take a value close to the rank of the overriding harmonic of the vibrations responsible for the high irregularities of rotation in the vicinity of the idle . In order to increase the efficiency of such a filtering device, it may be necessary to increase the mass of each of the pendulum masses. The disadvantage of such an increase in mass is to generate significant wear in the areas of contact between the rollers and the bearing tracks of the support in particular, these contact areas being relatively reduced, which generates a contact pressure important.
    [0004] The patent application WO 2011/100945 proposes equipping a torque converter with a double pendulum device, that is to say having two supports fixed to each other, pendulum masses being mounted individually on each of the supports. More particularly, each pendulum mass comprises two parts located axially on either side of the support. The number of pendular masses being doubled, the efficiency of such a double pendulum device is improved. Furthermore, the contact areas are also doubled, because of the use of two supports, the wear of each support can be controlled.
    [0005] However, such a double pendulum device has a large footprint and a high number of parts, which impacts the cost of the assembly. The object of the invention is in particular to provide a simple, effective and economical solution to these problems. For this purpose, it proposes a pendulum damping device comprising at least one pendular mass movably mounted on a support intended to be rotated about an axis, characterized in that the support comprises a first and a second parts. 10 annular extending radially and offset, at least in part, axially relative to each other, the pendulum mass comprising at least a central portion located axially between the two parts of the support and two side parts, each located the other side of the corresponding part of the support, with respect to the central part. The pendulum mass having three parts, the mass of the latter can be increased substantially. Furthermore, the support having two parts, thereby significantly increases the contact areas to reduce the contact pressures and thus the wear of the support. The number of parts of the device remains limited, however, compared with the prior art, which allows to control the costs of such a device. According to one characteristic of the invention, each mass comprises rolling means bearing on the first part of the support at a first rolling track and a second rolling track circumferentially offset with respect to the other, said rolling means bearing on the second part of the support at a third raceway and a fourth raceway circumferentially offset relative to each other. In this case, the first and second parts of the support 30 may comprise deformable zones at the location of said raceways.
    [0006] The deformable zones make it possible to ensure that, in operation and under the effect of the centrifugal forces, the rolling means come to bear simultaneously on each of the rolling tracks. This ensures that the contact pressure exerted on each of the rolling tracks is relatively low. At least one part of the mass comprises two end zones offset circumferentially with respect to one another and movable relative to one another. This also ensures that the rolling means are properly supported on all of the bearing tracks of the support. In this case, the end zones of at least one of the parts of the pendulum mass may comprise stops capable of cooperating together so as to limit the displacement of one of said end zones relative to the other. . According to one embodiment of the invention, the end zones of at least one part of the pendulum mass can be connected by an elastically deformable connection zone. According to another embodiment of the invention, one of the end zones of at least one part of the pendulum mass comprises a projecting member, such as for example a tab having an enlarged end, inserted in a housing of complementary shape to the other end zone of said portion of the pendulum mass. In particular, the mounting clearance between the protruding member and the complementary housing can be reduced so as to allow limited movement of the end zones relative to each other. According to yet another embodiment of the invention, at least two parts of the pendulum mass each comprise first and second end zones offset circumferentially relative to each other and movable relative to each other. the other, the first end zones being located axially facing each other and the second end zones being situated axially opposite one another, the first end zone of the one of the parts of the pendulum mass being hinged about a pivot axis on the second end zone of the other part of the pendulum mass.
    [0007] In particular, the central part and the lateral parts of the pendulum mass may each comprise a first and a second end zone circumferentially offset relative to each other and movable relative to each other, the first end zones of the lateral parts being articulated on the second end zone of the central part, for example around the same pivot axis. The central part of each pendulum mass can be connected to each of the lateral parts by means of at least two spacers circumferentially offset with respect to each other, each spacer comprising a rolling track, the rolling means comprising rollers adapted to roll on the raceways of the spacers and on the raceways of the two parts of the support. In addition, the rollers and / or the spacers may be housed axially, at least in part, in oblong openings of the parts of the support. In addition, the various parts of the pendulum mass and the spacers can be fixed together, for example by riveting. As a variant, the rolling means may comprise, for each pendulum mass, two rollers each comprising two end zones able to bear on rolling tracks of the lateral parts of the mass, a central zone able to bear on a rolling track of the central portion of the mass, and two intermediate zones located between the central zone and each of the end zones, said intermediate zones being able to bear against the rolling tracks of the two parts of the support.
    [0008] The rolling tracks may for example be formed by the edges of oblong holes in an arc formed in the parts of the support and the pendulum mass. In this case, the intermediate zones of each roll may have a greater diameter than the central zone and the end zones of said roll, the length of each intermediate zone along the axis of the roll being greater than the thickness of the roll. corresponding part of the support. In this way, the intermediate zones of the rollers form bracing means between the different parts of the mass. Finally, the central part and the lateral parts of the mass can be fixed to each other, for example by riveting. The invention will be better understood and other details, features and advantages of the invention will become apparent on reading the following description given by way of non-limiting example with reference to the accompanying drawings, in which: FIG. 1 is a view 1 is a perspective view of the device of FIG. FIG. 4 is a front view of the device of FIGS. 1 to 2, FIG. 5 is a perspective view of a device according to a second embodiment of the invention, FIG. FIG. 6 is a perspective view of a device according to a third embodiment of the invention; FIG. 7 is a perspective view of a part of a pendulum mass equipped with spacers, belonging to the device of FIG. Figure 6, - Figure 8 e 1 is a perspective view of a pendulum mass of a device according to a fourth embodiment of the invention; FIG. 9 is a perspective view of part of the pendulum mass of FIG. 8; FIG. 10 is a perspective view of a device according to a fifth embodiment of the invention; FIG. 11 is a perspective view of a device according to a sixth embodiment of the invention; FIG. a perspective view of a pendular mass of the device of FIG. 11; - FIG. 13 is a perspective view of a part of the pendular mass of FIG. 12; FIG. 14 is a perspective view of a FIG. part of a device according to a seventh embodiment of the invention, - figure 15 is a detail view of a part of the device of figure 14, - figure 16 is a half-view in axial section of the device Figures 14 and 15. Figures 1 to 4 show a damping device pe ndulaire 1 for a motor vehicle, according to a first embodiment of the invention. The device comprises a support comprising a first and second annular portions 2a, 2b. Each annular portion 2a, 2b comprises a radially inner zone 3 extending radially and a radially outer zone 4 extending radially, axially offset from each other and connected to each other by a connection zone. 5. As can be seen more clearly in FIG. 3, the internal zones 3 of the two annular portions 2a, 2b are pressed against each other and fixed to one another, while the radially outer zones 4 two parts 2a, 2b are spaced axially from each other.
    [0009] Oblong openings 6 extend circumferentially in the radially outer regions of the two parts of the support. More particularly, each portion 2a, 2b has three oblong openings 6, separated from each other by radial bridges 7. Each opening 6 has an inner edge 8 and an outer edge 9, generally in an arc, connected to each other. the other by radial end edges 10. The outer edge 9 of each opening comprises two rounded cutouts 11, circumferentially offset from one another, and defining two raceways.
    [0010] Pendular masses 12, here three in number, are mounted movably on the two parts 2a, 2b of the support. More particularly, each mass 12 comprises a central portion 12a and two lateral portions 12b, each extending radially and in the general shape of a circular arc. Each portion 12a, 12b has an outer edge 13 extending opposite the outer edges of the two parts 2a, 2b of the support, an inner edge 14, the two edges 13, 14 being connected by radial ends 15. The central portion 12a is disposed axially between the radially outer regions 4 of the two parts 2a, 2b of the support. The two lateral portions 12b are each located on the other side of the corresponding portion 2a, 2b of the support, with respect to the central portion 2a. Two spacers 16 are mounted between each lateral portion 12b and the central portion 12a of the corresponding mass 12. Each mass 12 thus comprises two pairs of spacers 16, the spacers 16 of the same pair being arranged axially facing one of the other, the two pairs of spacers 16 being circumferentially offset from one another. Each spacer 16 has a radially inner edge equipped with a damping elastomeric strip 17, a concave radially outer edge 18 intended to form a raceway, said inner and outer edges 17, 18 being connected by end edges 19 globally radial. The different parts 12a, 12b of the pendulum mass 12 and the spacers 16 are fastened together by rivets 20, so as to form a single mobile unit assembly. Rollers 21 are mounted between the rolling tracks 18 of the spacers 16 and the rolling tracks 11 of the portions 2a, 2b of the support, formed by the cutouts 11. Each mass 12 thus cooperates with four different rollers 21. As best seen in Figure 3, each roller 21 has an annular peripheral edge 22 projecting axially towards the corresponding portion 12a, 12b of the mass 12.
    [0011] Such projecting edge 22 reduces the contacting surfaces, and therefore the friction. The shape of the rolling tracks 11, 18 defines the trajectory of the pendular masses 12 in operation, as is known per se. In particular, in operation, the support 2a, 2b is rotated about the axis A and the masses 12 are subjected to centrifugal forces directed radially outwards. The masses 12 thus exert a force on the zones 23 of the parts 2a, 2b of the support located radially outside the rolling tracks 11 of the support. These zones 23 are relatively narrow, that is to say have a relatively small radial dimension, so that they are elastically deformable. This makes it possible to compensate for any misalignment of the various rollers 21, so that the four rollers 21 bear simultaneously against the respective raceways 11, 18. As indicated previously, this makes it possible to avoid a risk of degradation. premature device. Such a risk is also avoided by the large number of contact areas between the rollers 21 and the support, due to the presence of a two-part support 2a, 2b. Moreover, the use of pendular masses 12 in three parts 12a, 12b makes it possible to increase substantially the mass of each of them, and therefore the efficiency of the filtration.
    [0012] FIG. 5 represents a second embodiment of the invention, which differs from that described above with reference to FIGS. 1 to 4 in that each portion 12a, 12b of the mass 12 comprises a first and a second end zone 24 , 25 circumferentially offset from one another and attached to each other by a radially inner connection zone 26 of small width, that is to say of small radial dimension, and elastically deformable. The radially outer edges of the two end zones 24, 25 comprise stops 27 facing each other, able to come into contact so as to limit the displacement of the two end zones 24, 25. one compared to the other. This limited displacement is dimensioned so as to be sufficient to ensure simultaneous support of the four rollers 21 at the respective raceways 11, 18. FIGS. 6 and 7 illustrate a third embodiment of the invention, which differs from that exposed in FIG. 5 in that the two lateral parts 12b each comprise two end zones 24, 25 completely separated from one another, and fixed respectively to each of the end zones 24, 25 of the central part. 12a. The central portion 12a has the same structure as that previously described, as can be seen in FIG. 7. It thus comprises two end zones 24, 25 connected by an elastically deformable zone 26. It will be noted that in FIG. one of the side portions 12b has been removed for illustration purposes. Figures 8 and 9 show a fourth embodiment of the invention, which differs from that shown in Figures 5 and 6 in that the elastically deformable connection zone 26 is located, not at the radially inner edge of the zones d end 24, 25, but at a radially median zone of said zones 24, 25. As before, stops 27 can limit the displacement of the end zones 24, 25 of the central portion 12a.
    [0013] FIG. 10 illustrates a fifth embodiment of the invention, which differs from those previously described in that each portion 12a, 12b of the mass 12 comprises two end zones 24, 25 separated from one another. The end zone 25 has a lug 28 whose free end is widened and is inserted into a housing 29 of complementary shape to the other end zone 24. The mounting clearance between the lug 28 and the complementary housing 29 is relatively small, for example of the order of 1 mm, so as to allow a limited displacement of the end zones 24, 25 relative to each other. FIGS. 11 to 13 show a sixth embodiment which differs from those previously described in that the central portion 12a and the lateral portions 12b of the pendular mass 12 each comprise a first and a second end zone 24, 25, offset circumferentially with respect to one another, the first end zones 24 of the lateral portions 12b being hinged to the second end zone 25 of the central portion 12a, about the same pivot axis 30. This axis 30 is engaged in the ears 31 of the corresponding zones 24, 25 of the portions 12a, 12b of each mass 12, said lugs 31 being located at the radially outer periphery of the mass 12. In addition, as in the preceding embodiments, the first end zones 24 are interconnected by means of the spacers 16 and corresponding rivets 20, and the second end zones 25 are connected between they through the spacers 16 and rivets 20 corresponding. The embodiments of FIGS. 5 to 13 allow a displacement of the first end zones 24 with respect to the second end zones 25, for each of the masses 12, to a sufficient extent to allow the four rollers 21 to come simultaneously in support. on the rolling tracks 18, 11 of the spacers 16 and the support 2a, 2b.
    [0014] Figures 14 to 16 illustrate a seventh embodiment in which each pendulum mass 12 is formed of a central portion 12a and two side portions 12b, said portions 12a, 12b of the mass 12 being mounted on the two parts 2a, 2b of the support by means of two rollers 32 circumferentially offset from one another. Each roll 32 has two end zones 32a, a central zone 32b and two intermediate zones 32c situated between the central zone 32b and each of the end zones 32a. The intermediate zones 32c of each roll 32 have a greater diameter than the central zone 32b and the end zones 32a of said roll 32. Moreover, the length of each intermediate zone 32c along the axis of the roll 32 is greater than the thickness of the portions 2a, 2b of the support, at least in the mounting zone of the rollers 32. The end zones 32a of the roll 32 are engaged in oblong holes in an arc of circle 33 formed in the lateral parts 12b of the corresponding mass 12. The oblong holes 33 have their concavity turned radially outwards. The intermediate zones 32c of the roll 32 are engaged in oblong circular-arc holes 34 formed in the parts 2a, 2b of the support. The oblong holes 34 have their concavity turned radially inwards. Finally, the central zone 32b of each roller 32 is engaged in a hole of complex shape of the central portion 12a of the mass 12 (FIG. 15). This hole comprises a portion 35a of similar shape to that of the hole of each lateral portion (arc concavity radially turned radially outwardly), to which is added a circular portion 35b allowing the passage of one of the intermediate portions 32c of the corresponding roller 32, to allow the mounting of the latter. The oblong holes 33, 34, 35a in an arc of the different parts 2a, 2b, 12a, 12b of the mass 12 and the support form rolling tracks for the rollers 32, the shape of these raceways defining the trajectory of the pendulum masses 12 in operation, as is known per se. The central portion 12a and the lateral portions 12b of the mass 12 are fixed to each other by means of rivets 20, here three in number, passing through elongated holes 36 in the shape of an arc of the parts 2a, 2b of the support, these holes 36 having their concavity turned radially inwards (Figure 14). As in the case of the embodiment of FIGS. 1 to 4, the zone 23 of the portions 2a, 2b of the support situated radially outside the oblong holes 34 is elastically deformable, so as to allow in particular the simultaneous support of all the intermediate zones 32c of the rollers 32 on the corresponding rolling tracks of the parts 2a, 2b of the support.
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. Pendulum damping device (1) comprising at least one pendulum mass (12) movably mounted on a support (2a, 2b) intended to be rotated about an axis (A), characterized in that the support has first and second annular portions (2a, 2b) extending radially and offset, at least in part, axially with respect to each other, the pendulum having at least one axially located central portion (12a) between the two parts (2a, 2b) of the support and two lateral parts (12b), each located on the other side of the corresponding part (2a, 2b) of the support, relative to the central part (2a).
    [0002]
    2. Device according to claim 1, characterized in that each mass (12) comprises rolling means (21) bearing on the first portion (2a) of the support at a first raceway (11) and a second rolling track (11) circumferentially offset relative to each other, said rolling means (21) bearing on the second portion (2b) of the support at a third rolling track (11); ) and a fourth rolling track (11) circumferentially offset relative to each other.
    [0003]
    3. Device according to claim 2, characterized in that the first and second portions (2a, 2b) of the support comprise deformable zones (23) at the location of said raceways (11).
    [0004]
    4. Device according to one of claims 1 to 3, characterized in that at least one of the parts (12a, 12b) of the mass (12) comprises two end zones (24, 25) circumferentially offset the relative to each other and movable relative to each other.
    [0005]
    5. Device according to claim 4, characterized in that the end zones (24, 25) of at least one of the parts (12a, 12b) of the pendulum mass (12) comprise stops (27) capable of cooperating together to limit movement of one of said end regions (24, 25) relative to the other.
    [0006]
    6. Device according to claim 4 or 5, characterized in that the end zones (24, 25) of at least one of the parts (12a, 12b) of the pendulum mass (12) are connected by a zone of link (26) elastically deformable.
    [0007]
    7. Device according to claim 4 or 5, characterized in that one (25) of the end zones (24, 25) of at least one of the parts (12a, 12b) of the pendulum mass (12). has a protruding member, such as for example a tab (28) having an enlarged end, inserted in a housing (29) of complementary shape to the other end zone (24) of said portion (12a, 12b). the pendulum mass (12).
    [0008]
    8. Device according to claim 4 or 5, characterized in that at least two parts (12a, 12b) of the pendulum mass (12) each comprise a first and a second end zones (24, 25) offset circumferentially. relative to one another, the first end regions (24) lying axially opposite one another and the second end zones (25) ) being located axially facing each other, the first end zone (24) of one of the parts (12a, 12b) of the pendulum mass (12) being hinged about a pivot axis (30) on the second end zone (25) of the other part of the pendulum mass (12).
    [0009]
    9. Device according to claim 8, characterized in that the central portion (12a) and the side portions (12b) of the pendulum mass (12) each comprise a first and a second end zones (24, 25), offset circumferentially relative to each other and movable relative to each other, the first end regions (24) of the lateral portions (12b) being hinged to the second end region (25) of the central portion (12a), for example around the same pivot axis (30).
    [0010]
    10. Device according to one of claims 2 to 9, characterized in that the central portion (12a) of each pendulum mass (12) is connected to each of the lateral portions (12b) via at least two spacers (16) circumferentially offset with respect to each other, each spacer (16) having a running track (18), the rolling means comprising rollers (21) adapted to roll on the running tracks (18) spacers (16) and on the rolling tracks (11) of the two parts (2a, 2b) of the support.
    [0011]
    11. Device according to claim 10, characterized in that the rollers (21) and / or the spacers (16) are housed axially, at least in part, in oblong openings (6) of the parts (2a, 2b) of the support .
    [0012]
    12. Device according to claim 10 or 11, characterized in that the different parts (12a, 12b) of the pendulum mass (12) and the spacers (16) secured together, for example by riveting (20).
    [0013]
    13. Device according to one of claims 2 to 9, characterized in that the rolling means comprise, for each pendulum mass (12), two rollers (32) each comprising two end zones (32a) adapted to come into operation. bearing on the rolling tracks (33) of the lateral parts (12b) of the mass (12), a central zone (32b) able to rest on a running track (34) of the central part (12a) of the mass (12), and two intermediate zones (32c) situated between the central zone (32b) and each of the end zones (32a), said intermediate zones (32c) being able to bear on the rolling tracks (11). ) of the two parts (2a, 2b) of the support.
    [0014]
    14. Device according to claim 13, characterized in that the intermediate zones (32c) of each roller (32) have a greater diameter than the central zone (32b) and the end zones (32a) of said roller (32). ), the length of each intermediate zone (32c) along the axis of the roller (32) being greater than the thickness of the corresponding portion (2a, 2b) of the support.
    [0015]
    15. Device according to claim 13 or 14, characterized in that the central portion (12a) and the side portions (12b) of the mass (12) are fixed to each other, for example by riveting.
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    引用文献:
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    法律状态:
    2015-12-31| PLFP| Fee payment|Year of fee payment: 3 |
    2016-12-29| PLFP| Fee payment|Year of fee payment: 4 |
    2018-01-02| PLFP| Fee payment|Year of fee payment: 5 |
    2019-12-31| PLFP| Fee payment|Year of fee payment: 7 |
    2020-12-31| PLFP| Fee payment|Year of fee payment: 8 |
    2021-12-31| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1362706A|FR3014983B1|2013-12-16|2013-12-16|PENDULAR DAMPING DEVICE|FR1362706A| FR3014983B1|2013-12-16|2013-12-16|PENDULAR DAMPING DEVICE|
    DE102014117000.8A| DE102014117000A1|2013-12-16|2014-11-20|Sway control device|
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