• 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 movably mounted on a support (2a, 2b) intended to be rotated about an axis (A), via rolling means (12). The support comprises first and second radially extending annular portions (2a, 2b) which are offset at least in part, axially from each other, at least one spacer (15) fixedly and axially mounted between the two parts (2a, 2b) of the support, the radially inner periphery (16) of the spacer (15) forming at least one raceway (18) for the rolling means (12), the pendulum mass (6) comprising at least one central portion (6a) located axially between the two parts (2a, 2b) of the support and whose radially outer periphery (7) forms at least one raceway (11) for the rolling means (12).
    公开号:FR3014982A1
    申请号:FR1362701
    申请日:2013-12-16
    公开日:2015-06-19
    发明作者:Giovanni Grieco
    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 filtration device, it may be necessary to increase the travel and / or mass of each of the pendular masses. The disadvantage of 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 significant contact pressure .
    [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 pendular damping device comprising at least one pendular mass movably mounted on a support intended to be driven in rotation about an axis, by means of rolling means, characterized in that the support 10 comprises a first and a second annular portion extending radially and offset, at least in part, axially relative to one another, at least one spacer mounted fixedly and axially between the first and second parts of the support , the radially inner periphery of the spacer forming at least one raceway for the rolling means, the pendulum having at least one central portion located axially between the first and second parts of the support and whose radially outer periphery forms the less a running track for the rolling means. Such a device provides a large deflection of the pendulum mass relative to the support. In addition, it is possible to easily increase the thickness (and therefore the mass) of the central part of the pendulum mass, which also increases the size of the bearing zones of the rolling means and therefore reduces the wear of the device. This device therefore offers increased efficiency, for a footprint and a reduced number of parts. The pendulum mass may further comprise at least two side portions, each located on the other side of the corresponding portion of the support, relative to the central portion, said side portions being fixed to the central portion. The pendulum mass then comprises three parts, so as to substantially increase its mass, and therefore the efficiency of the filtration.
    [0006] The lateral parts of the pendulum mass can be fixed to the corresponding central part by means of fastening means, such as rivets, passing through oblong arc-shaped holes of the parts of the support.
    [0007] In this case, the oblong holes are preferably dimensioned to ensure a maintenance of the rolling means between the raceways of the central portion of the mass and the rolling tracks of the support spacer, whatever the position of the pendulum mass relative to the support.
    [0008] In addition, the rolling means may comprise two rollers circumferentially offset from each other, each able to roll on a concave raceway of the inner peripheral edge of the support spacer and on a concave raceway of the outer edge of the central part of the pendulum mass.
    [0009] The pendulum mass may be movable relative to the support between two extreme positions, the maximum distance between the bearing tracks of the support spacer and the running tracks of the central part of the pendulum mass at the ends circumferential of said raceways, being smaller than the diameter of the rollers. This avoids that the rollers can be extracted from the spaces formed between the corresponding opposite rolling tracks of the support and the pendulum mass. In order to reduce the friction surfaces, each roll may comprise annular peripheral edges projecting axially on either side of the roll, able to bear on the parts of the support. Similarly, the parts of the support may comprise projecting zones axially able to bear on the lateral parts of the mass.
    [0010] Said projecting zones are for example made by deformation of material.
    [0011] According to one embodiment of the invention, the parts of the support are annular and each comprise a radially extending radially inner zone and a radially extending radially extending zone, axially offset from one another and connected to one another. to one another by a frustoconical connection zone, the inner zones of the two annular parts being pressed against each other and fixed to one another, and the radially outer regions of the two parts being axially spaced apart. one of the other. 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 exploded, partial and in perspective, of a pendulum damping device according to one embodiment of the invention, - Figure 2 is an exploded partial view in perspective of this device, - Figure 3 is a view. exploded and in perspective, illustrating the central part of a mass, two rollers and a spacer. FIG. 4 is a front view of the device; FIG. 5 is a half-sectional view along line VV of FIG. 4; FIG. 6 is a sectional view along the line VI-VI of FIG. 4, - Figure 7 is a view corresponding to Figure 4, wherein one of the pendular masses is in one of its extreme positions. Figures 1 to 6 show a pendulum damping device 1 for a motor vehicle, according to one 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 zone of 5. As can be seen better in FIG. 3, the internal zones 3 of the two annular parts 2a, 2b are pressed against each other and fixed to one another, while the radially outer zones 4 of the two parts 2a, 2b are spaced axially from each other. Pendular masses 6, here three in number, are mounted movably on the two parts 2a, 2b of the support. More particularly, each mass 6 comprises a central portion 6a and two lateral portions 6b, each extending radially and in the general shape of a circular arc. Each lateral portion 6b has an outer edge 7 extending facing the outer edges 8 of the two parts 2a, 2b of the support, an inner edge 9, the two edges 7, 9 being connected by radial ends 10. The central portion 6a has a similar structure, the outer edge 7, however, being offset radially inwards with respect to the outer edge 8 of the portions 2a, 2b of the support. The central portion 6a is disposed axially between the radially outer regions 4 of the two parts 2a, 2b of the support. The two lateral parts 6b are each located on the other side of the corresponding part 2a, 2b of the support, with respect to the central part 2a. The radially outer edge 10 of the central portion 6a of the pendulum mass 6 has two concave zones 11 circumferentially offset from one another and forming rolling tracks for rollers 12. For each pendulum 6, the side portions 6b and center portion 6a are secured to each other by three rivets 13 passing through elongated arcuate holes 14 formed in radially outer regions 4 of portions 2a, 2b of the support. Holes 14 have their concavity turned inward. Each mass 6 is thus movable between two extreme positions defined by pressing said rivets 13 on the bottoms or the circumferential ends of said elongated holes 14. For each pendulum mass 6, a spacer 15 is mounted between the radially outer regions 4 of the parts 2a, 2b of the support. Each spacer 15 has a generally circular arc shape, is located radially outside the central portion 6a of the mass 6, and has a radially inner edge 16 and a radially outer edge 17. The radially outer edge 17 of the spacer 15 extends opposite the outer edges 8 of the two parts 2a, 2b of the support. The inner edge 16 of the spacer comprises two concave zones 18, circumferentially offset from one another, and forming rolling tracks for the rollers 12. The two annular parts 2a, 2b and the spacers 15 of the support are fixed to each other by means of rivets 19. As best seen in FIG. 6, each roller 12 has two pins 20 extending axially on either side of the roll 12 and accommodated in oblong holes 21 in the form of an arc of the parts 2a, 2b of the support. The oblong holes 21 have their concavity turned radially inwards. In addition, each roller 12 has two annular peripheral edges 22 projecting axially towards the corresponding portions 2a, 2b of the support. These projecting edges 22 make it possible to reduce the surfaces in contact and thus the friction. Similarly, the parts 2a, 2b of the support comprise zones 23 protruding axially, obtained by local deformation of material, able to bear on the side portions 6b of the mass 6 (Figure 5). The protruding zones are intended to rest on the material parts 6b of the mass 6, more particularly during axial movements of the mass relative to the support. These projections 23 reduce the friction surface of the mass against the support. The shape of the rolling tracks 11, 18 defines the trajectory of the pendular masses 6 in operation, as is known per se.
    [0012] As can be seen in FIG. 7, in which one of the pendulum masses 6 is in one of these extreme positions, the rolling tracks 11, 18, the rollers 12 and the oblong holes 14, 21 are dimensioned in such a way that to ensure a maintenance of the rollers 12 between the rolling tracks 11 of the central portion of mass 6a and the raceways 18 of the spacer 15 of the support, regardless of the position of the pendular mass 6 relative to the support. In particular, the maximum distance between the rolling tracks 11, 18 of the support spacer 15 and the rolling tracks 11 of the central portion 6a of the pendulum mass 6, at the circumferential ends of said running tracks. 11, 18, is smaller than the diameter of the rollers 12, even in the extreme position of the pendulum mass 6. In particular, in operation, the support is rotated about an axis A and the masses 6 are subjected to centrifugal forces directed radially outward. Axis A is the axis of rotation of the gearbox. As indicated above, the use of pendulum masses 6 in three parts 6a, 6b makes it possible to increase substantially the mass of each of them, and therefore the efficiency of the filtration. Furthermore, the shape of the central portions 6a and spacers 15 provides a large deflection of the pendulum masses 6 relative to the support, which again allows to improve the efficiency of filtration.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Pendulum damping device (1) comprising at least one pendulum mass movably mounted on a support (2a, 2b) intended to be rotated about an axis (A), by means of rolling means ( 12), characterized in that the support comprises a first and a second annular portion (2a, 2b) extending radially and offset, at least in part, axially with respect to each other, at least one spacer ( 15) fixedly and axially mounted between the first and second parts (2a, 2b) of the support, the radially inner periphery (16) of the spacer (15) forming at least one raceway (18) for the rolling means ( 12), the pendulum mass (6) comprising at least a central portion (6a) situated axially between the first and second parts (2a, 2b) of the support and whose radially outer periphery (7) forms at least one raceway ( 11) for the rolling means (12).
    [0002]
    2. Device according to claim 1, characterized in that the pendulum mass (6) further comprises at least two side portions (6b), each located on the other side of the corresponding portion (2a, 2b) of the support, by relative to the central portion (6a), said side portions (6b) being attached to the central portion (6a).
    [0003]
    3. Device according to claim 2, characterized in that the lateral parts (6b) of the pendulum mass (6) are fixed to the corresponding central part (6a) by means of fixing means, such as rivets (13). ), passing through arcuate oblong holes (14) of the support portions (2a, 2b).
    [0004]
    4. Device according to claim 3, characterized in that the oblong holes (14) are sized to ensure a maintenance of the rolling means (12) between the rolling tracks (11) of the central portion (6a) of the mass ( 6) and the bearing tracks (18) of the spacer 3014 982 10 (15) of the support, regardless of the position of the pendulum mass (6) relative to the support.
    [0005]
    5. Device according to one of claims 1 to 5, characterized in that the rolling means comprise two rollers (12) circumferentially offset from each other, each able to roll on a concave raceway ( 18) of the inner peripheral edge (16) of the spacer (15) of the support and on a concave raceway (11) of the outer edge (7) of the central portion (6a) of the pendulum mass (6).
    [0006]
    6. Device according to claims 4 and 5, characterized in that the pendulum mass (6) is movable relative to the support between two extreme positions, the maximum distance between the raceways (18) of the spacer (15). ) of the support and the running tracks (11) of the central portion (6a) of the pendulum mass (6), at the circumferential ends of said raceways (11, 18) being smaller than the diameter of the rollers (12).
    [0007]
    7. Device according to claim 5 or 6, characterized in that each roller (12) has annular peripheral edges (22) projecting axially on either side of the roller (12), adapted to bear on the parts (2a, 2b) of the support. 20
    [0008]
    8. Device according to one of claims 2 to 7, characterized in that the portions (2a, 2b) of the support comprise zones (23) projecting axially, can bear on the side portions (6b) of the mass. (6).
    [0009]
    9. Device according to claim 8, characterized in that said projecting zones (23) are made by deformation of material.
    [0010]
    10. Device according to one of claims 1 to 9, characterized in that the parts (2a, 2b) of the support are annular and each comprise a radially inner zone (3) extending radially and a radially outer zone (4). extending radially, axially offset from one another and connected to each other by a frustoconical connection zone (5), the inner zones (3) of the two annular portions (2a, 2b) being plated against each other and fixed to one another, and the radially outer regions (4) of the two parts (2a, 2b) being spaced axially from each other.
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR3014982B1|2016-03-11|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102010049556A1|2009-11-16|2011-05-19|Schaeffler Technologies Gmbh & Co. Kg|Flywheel for vehicle clutch, has radial outer flywheel mass, radial inner hub and spring disk for connecting flywheel mass and hub, where hub and flywheel mass have stop mediums|
    DE102012219959A1|2011-11-28|2013-05-29|Schaeffler Technologies AG & Co. KG|centrifugal pendulum|
    FR2986593A1|2012-02-07|2013-08-09|Valeo Embrayages|PENDULAR DAMPING DEVICE|
    WO2013156733A1|2012-04-20|2013-10-24|Valeo Embrayages|Pendular damping device, especially for a motor vehicle transmission|FR3048472A1|2016-03-02|2017-09-08|Valeo Embrayages|BEARING MEMBER FOR PENDULAR DAMPING DEVICE|
    WO2017198922A1|2016-05-19|2017-11-23|Valeo Embrayages|Device for damping torsional oscillations for a vehicle transmission system|
    FR3058196A1|2016-10-27|2018-05-04|Valeo Embrayages|PENDULAR DAMPING DEVICE|DE102011010342A1|2010-02-16|2011-08-18|Schaeffler Technologies GmbH & Co. KG, 91074|Torque transfer device|
    FR2981714B1|2011-10-19|2013-11-01|Valeo Embrayages|PENDULUM OSCILLATOR TYPE DAMPING SYSTEM WITH IMPROVED GUIDE DEVICE|DE102014212812A1|2014-07-02|2016-01-07|Schaeffler Technologies AG & Co. KG|centrifugal pendulum|
    DE102015212180A1|2015-06-30|2017-01-05|Schaeffler Technologies AG & Co. KG|centrifugal pendulum|
    JP6534589B2|2015-09-11|2019-06-26|株式会社エクセディ|Torque fluctuation suppressing device, torque converter, and power transmission device|
    FR3046646B1|2016-01-08|2018-08-17|Valeo Embrayages|PENDULAR DAMPING DEVICE|
    CN105822722B|2016-06-12|2018-04-13|上海萨克斯动力总成部件系统有限公司|The vehicle shock absorber of double centrifugal pendulums|
    WO2018100006A1|2016-11-30|2018-06-07|Valeo Embrayages|Pendulum damping device|
    FR3059382B1|2016-11-30|2019-05-10|Valeo Embrayages|PENDULAR DAMPING DEVICE|
    JP6774352B2|2017-02-17|2020-10-21|株式会社エクセディ|Torque fluctuation suppression device, torque converter, and power transmission device|
    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 |
    2018-09-28| ST| Notification of lapse|Effective date: 20180831 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1362701A|FR3014982B1|2013-12-16|2013-12-16|PENDULAR DAMPING DEVICE|FR1362701A| FR3014982B1|2013-12-16|2013-12-16|PENDULAR DAMPING DEVICE|
    DE102014116855.0A| DE102014116855A1|2013-12-16|2014-11-18|Sway control device|
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