• 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 comprising at least one pendular mass movably mounted on a support, said mass comprising two parts arranged on either side of the support, connected by at least one spacer (4b) passing through a opening of the support, a roller being disposed between a raceway (11) of the spacer (4b) and a running track of the support. The raceway (11) of the spacer (4b) is formed by a first portion (P1) and a second portion (P2) symmetrical with respect to each other, with respect to a plane (Ps), the second portion (P2) being extended by a third portion (P3), opposite the first portion (P1).
    公开号:FR3033187A1
    申请号:FR1551643
    申请日:2015-02-26
    公开日:2016-09-02
    发明作者:Dominique Dael
    申请人:Valeo Embrayages SAS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a pendulum damping device.
    [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 exhibits acyclisms due to successive explosions in the cylinders of the engine, these acyclisms vary 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 from entering the gearbox and causing 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 device. The patent application FR 2981714, 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 operation and has two parts, mounted axially on either side of the support and connected by spacers each through an opening of the support. A roller is mounted between a raceway 3033187 2 formed in each spacer and the edge of the corresponding opening of the support. In response to rotational irregularities or acyclisms, each mass moves so 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 particular, each spacer has a median plane of symmetry. In order to increase the efficiency of the pendular masses, it is known to increase their movement. For this, one solution is to increase the length of the raceway of each spacer, and therefore also the dimensions of each spacer. As a result, it is then also necessary to increase the dimensions of the openings in the support, which affects its mechanical strength. The invention aims in particular to provide a simple, effective and economical solution to this problem.
    [0004] To this end, it proposes a pendulum damping device comprising at least one pendular mass movably mounted on a support, said mass comprising two parts arranged on either side of the support, connected by at least one spacer passing through a opening of the support, a roller being disposed between a raceway of the spacer and a raceway of the support, characterized in that the raceway of the spacer is formed by a first portion and a second portion symmetrical l one relative to the other, with respect to a plane, the second portion being extended by a third portion, opposite the first portion.
    [0005] The first portion is thus devoid of an extension opposite the second portion, so that the raceway is partially symmetrical, while being truncated on the side of the first portion. The raceway is formed solely by the first, second and third portions. According to the invention, the term "rolling track" designates the zone of the spacer on which the rolling bearing is caused to roll in operation, said running track being continuous and having a slope that is continuously increasing or decreasing, said running track being able to be formed of continuous curves contiguous and / or tangent to each other.
    [0006] Hereinafter, the center point of the tread is the point between the first and second portions of said track. In operation, each pendulum mass is caused to move on both sides of a so-called median position, especially when the support is rotated in a direction of rotation called direct or in a direction of rotation 15 contrary, said retro sense . In the middle position, the roller is located substantially at the midpoint of the raceway. The roller is thus caused to move on both sides of said midpoint. It turns out that in operation the roller has a travel on one side of the midpoint which is greater than the travel of the roller on the other side. This is the consequence of the "combined" pendulum kinematic movement. The second and third portions form the longest area of the track while the first portion forms the shortest area of the track, the two areas being separated by the midpoint.
    [0007] The invention therefore provides a spacer allowing a large clearance on one side of the midpoint, so as to dampen the acyclisms, while being smaller or truncated on the other side of the midpoint, so as to reduce the size of the spacer on this side. It is then also possible to reduce the dimensions of the corresponding opening 30 of the support, so as to increase the mechanical strength of the latter.
    [0008] When the mass comprises first and second spacers angularly offset from one another, the third zone of the first spacer may be located on the side of the second spacer and the third zone of the second spacer may be located on the second spacer. next to the first spacer. Preferably, the raceway of the spacer forms a concave surface turned radially outwardly. Furthermore, the bearing track of the support can form a concave surface turned radially inwards.
    [0009] In addition, the bearing race of the support may be formed by an edge of said opening. The roller may comprise studs extending axially on either side of the roller, engaged in oblong arcuate slots formed in the two parts of the pendulum mass.
    [0010] The pads limit in particular the movement of the roller, by abutment on the ends of the oblong slots. In addition, each mass may comprise first and second spacers, respectively passing through first and second openings of the support, a first roller being disposed between a raceway of the first spacer and a first raceway of the support, a second roller being disposed between a raceway of the second spacer and a second raceway of the support. The length of the third portion of the tread is for example between 0.1 and 0.8 times the length of the first portion or the second portion, preferably of the order of 0.4 times the length. of the first portion or the second portion. The mass may comprise at least two stops located for example at the ends of said mass, said stops being able to bear against an abutment complementary to the support in operation.
    [0011] In this case, the stops of the mass may be able to bear on the edges of the corresponding opening of the support. Preferably, each stop has a damping portion, for example of elastomeric material.
    [0012] The invention will be better understood and other details, characteristics 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. partial view, from the front, of a part of a pendulum damping device of the invention, in a median position of the pendular masses, - Figure 2 is a view corresponding to Figure 1, showing another position of masses, - Figure 3 is a front view of a spacer.
    [0013] Figures 1 to 3 show a pendulum damping device according to one embodiment of the invention. The device comprises pendulum masses 1, here two in number, mounted movably on a support 2. Each mass 1 comprises two parts 3 in the general shape of an arc (only one of the parts is shown), arranged with 2. The two parts 3 are connected by two spacers 4a, 4b extending axially and each passing through an oblong opening 5 in the general arc shape of the support. More particularly, each opening 5 has a radially inner edge 6 and a radially outer edge 7, connected to each other 25 by lateral edges 8 extending radially. The radially inner edge 6 has a portion 6a, and a portion 6b located radially outwardly with respect to the portion 6a, the two portions 6a, 6b being connected to each other by a curved connecting zone 6c. The radially outer edge 7 has a rounded recessed area 7a or a concave zone, the concavity of which is turned radially inwardly, said concave area 7a forming a rolling track for a roller 9. Each spacer 4a, 4b has a substantially planar radially inner surface 10, a radially outwardly concave surface 11, whose concavity is turned radially outwards, said inner and outer surfaces 10, 11 being connected by lateral surfaces 12. The radially outer surface 11 of each spacer 4a, 4b is intended to form a raceway for the corresponding roller 9. Each roller 9 has an axially central portion 9a, 10 intended to bear on the rolling tracks 7a, 11 of the support 2 and the spacer 4a, 4b, and axially extending cylindrical end pads 9b engaged in arcuate oblong slots 13 formed in the two portions 3 of the pendulum mass 1, the concavity of the arcuate lights 13 being turned radially outwards.
    [0014] Each mass 1 further comprises abutments 14 at its lateral ends. In particular, each abutment 14 is formed by a rivet 15 fixed to the parts 3 of the corresponding mass 1, and by an elastomer ring 16 mounted around the rivet 15 and located axially between the two parts 3 of the mass 1. Each abutment 14 is thus able to bear against an edge of the corresponding opening 5 of the support 2 in operation, as illustrated in FIGS. 1 and 2. As can be seen more clearly in FIG. 3, the rolling track of each spacer 4a, 4b is formed by a first portion P1 and a second portion P2 symmetrical with respect to each other, with respect to a plane Ps, the second portion P2 being extended by a third portion P3, opposite the first portion P1. The first portion P1 is thus devoid of extension at its free end, that is to say opposite the second portion P2, so that the raceway 11 is partially symmetrical, while being truncated on the side. of the first portion P1.
    [0015] The raceway 11 is formed solely by the first, second and third portions P1, P2, P3. The rolling track 11 is continuous and has a continuously increasing or decreasing slope and may be formed of contiguous continuous curves and / or in tangency to each other. The third portion P3 of the spacer 4a is located on the side of the spacer 4b and the third zone of the spacer 4b is located on the side of the spacer 4a. As indicated above, the center point M of the rolling track 11 is the point situated between the first and second portions P1, P2 of said track 11. In operation, each pendulum mass 1 is caused to move from one side to the other. other of a so-called median position, illustrated in Figure 1, in particular the rotation of the support 2 in a direction of rotation said direct or in a direction of rotation opposite, called retro direction. In the middle position, the roller 9 is located substantially at the midpoint M of the tread 11. The roller 9 is thus caused to move on either side of said midpoint M. It turns out that, in operation, the roller 9 has a travel on one side of the midpoint M which is greater than the travel of the roller 9 on the other side. This is the consequence of the "combined" pendulum kinematic movement. The particular position of the pendulum mass 1, namely the position illustrated in FIG. 2, corresponds to the maximum deflection due to a saturation state. The second and third portions P2, P3 form the longest zone of the track 11 while the first portion P1 forms the shortest zone of the track 11, the two zones being separated by the midpoint M. The invention therefore provides a spacer 4a, 4b allowing a large clearance on one side of the midpoint M, so as to provide a travel along a so-called pendulum kinematics combined greater long travel, whose purpose is to dampen the most important acyclisms , while being of smaller dimension or truncated on the other side of the midpoint M, so as to reduce the size of the spacer 4a, 4b of this side. It is then also possible to reduce the dimensions of the corresponding opening 5 of the support 2, so as to increase the mechanical strength of the latter.
    [0016] The length of the third portion P3 of the raceway 11 is, for example, equal to 0.4 times the length of the first portion P1 or the second portion P2, the first portion P1 and the second portion P2 having identical lengths. . 10
    权利要求:
    Claims (9)
    [0001]
    REVENDICATIONS1. Pendulum damping device comprising at least one pendulum mass (1) movably mounted on a support (2), said mass (1) comprising two parts (3) arranged on either side of the support (2), connected by at least one spacer (4a, 4b) passing through an opening (5) of the support (2), a roller (9) being disposed between a raceway (11) of the spacer (4a, 4b) and a track bearing (7a) of the support (2), characterized in that the raceway (11) of the spacer (4a, 4b) is formed by a first portion (P1) and a second portion (P2) symmetrical one relative to the other, with respect to a plane (Ps), the second portion (P2) being extended by a third portion (P3), opposite the first portion (P1).
    [0002]
    2. Device according to claim 1, characterized in that the raceway (11) of the spacer (4a, 4b) forms a concave surface turned radially outwardly.
    [0003]
    3. Device according to claim 1 or 2, characterized in that the raceway (7a) of the support (2) forms a concave surface turned radially inwardly.
    [0004]
    4. Device according to one of claims 1 to 3, characterized in that the raceway (7a) of the support (2) is formed by an edge (7) of said opening (5).
    [0005]
    5. Device according to one of claims 1 to 4, characterized in that the roller (9) comprises studs (9b) extending axially on either side of the roller (9), engaged in oblong slots ( 13) in the form of an arc formed in the two parts (3) of the pendulum mass (1).
    [0006]
    6. Device according to one of claims 1 to 5, characterized in that each mass (1) comprises a first and a second 30 spacers (4a, 4b), passing respectively through a first and a second openings (5) of the support ( 2), a first roller (9) being disposed between a raceway (11) of the first spacer (4a) and a first raceway (7a) of the support (2), a second roller (9) being disposed between a raceway (11) of the second spacer (4b) and a second raceway (7a) of the support (2). 5
    [0007]
    7. Device according to one of claims 1 to 6, characterized in that the length of the third portion (P3) of the raceway (11) is between 0.1 and 0.8 times the length of the first portion (P1) or the second portion (P2).
    [0008]
    8. Device according to one of claims 1 to 7, characterized in that the mass (1) comprises at least two stops (14), said stops (14) being able to bear against a complementary abutment (5). of the support (2) in operation.
    [0009]
    9. Device according to claim 8, characterized in that the stops (14) of the mass (1) are able to bear on the edges of the corresponding opening (5) of the support (2).
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    同族专利:
    公开号 | 公开日
    FR3033187B1|2017-02-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2981714A1|2011-10-19|2013-04-26|Valeo Embrayages|PENDULUM OSCILLATOR TYPE DAMPING SYSTEM WITH IMPROVED GUIDE DEVICE|
    EP2687749A1|2012-07-20|2014-01-22|Valeo Embrayages|Torsional damper with pendular mass|
    FR3000157A1|2012-12-20|2014-06-27|Valeo Embrayages|PENDULUM OSCILLATOR TYPE DAMPING DEVICES FOR EQUIPPING MOTOR VEHICLE TRANSMISSIONS|DE102018115801A1|2017-08-22|2019-02-28|Schaeffler Technologies AG & Co. KG|Centrifugal pendulum device|
    FR3084423A1|2018-07-30|2020-01-31|Valeo Embrayages|PENDULUM DAMPING DEVICE|
    WO2020200601A1|2019-04-03|2020-10-08|Valeo Embrayages|Pendulum damping device|
    法律状态:
    2016-02-29| PLFP| Fee payment|Year of fee payment: 2 |
    2016-09-02| PLSC| Search report ready|Effective date: 20160902 |
    2017-02-28| PLFP| Fee payment|Year of fee payment: 3 |
    2018-02-26| PLFP| Fee payment|Year of fee payment: 4 |
    2020-02-28| PLFP| Fee payment|Year of fee payment: 6 |
    2021-02-26| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1551643A|FR3033187B1|2015-02-26|2015-02-26|PENDULAR DAMPING DEVICE|FR1551643A| FR3033187B1|2015-02-26|2015-02-26|PENDULAR DAMPING DEVICE|
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