• 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, 11) of the type comprising at least one pendulum mass (2, 20) movably mounted on a support (4), said pendulum mass (2, 20) consisting of two flyweights ( 3, 17) disposed on the other side of the support (4), connected between internal faces (5) by at least one spacer (6) fixed by at least one rivet (23) and passing through a slot (10) of said support (4), a roller being arranged between the support (4) and the pendulum mass (2, 20), characterized in that said rivet (23) comprises two bouterolles (25).
    公开号:FR3064323A1
    申请号:FR1752347
    申请日:2017-03-22
    公开日:2018-09-28
    发明作者:Matthieu Malley；Gabriel BOUCHE
    申请人:Valeo Embrayages SAS；
    IPC主号:
    专利说明:

    (57) Pendulum damping device (1, 11) of the type of those comprising at least one pendulum mass (2,20) movably mounted on a support (4), said pendulum mass (2, 20) being formed of two weights (3, 17) arranged on either side of the support (4), connected between internal faces (5) by at least one spacer (6) fixed by at least one rivet (23) and passing through a light (10 ) of said support (4), a roller being arranged between the support (4) and the pendular mass (2, 20), characterized in that said rivet (23) comprises two dowels (25).

    -1 Process for manufacturing a pendulum damping device and device obtained by this process
    TECHNICAL FIELD OF THE INVENTION.
    The present invention relates to a process for manufacturing a pendulum damping device, in particular for a motor vehicle, as well as the device obtained by this process.
    TECHNOLOGICAL BACKGROUND OF THE INVENTION.
    io Such a device, also called a pendulum oscillator or pendulum, is in particular intended to equip a transmission of a motor vehicle.
    In a motor vehicle transmission, at least one torsional damping system is generally associated with a clutch capable of selectively connecting the engine to a gearbox, such as a friction clutch or a hydrokinetic coupling device comprising a locking clutch.
    Indeed, an internal combustion engine generates acyclisms due to the successive explosions in the engine cylinders, these acyclisms varying in particular depending on the number of cylinders.
    The damping system, which conventionally includes springs and friction weights, therefore has the function of filtering torsional vibrations due to acyclic rotation of the engine and intervenes before the transmission of engine torque to the gearbox. This is to prevent such vibrations from entering the transmission and causing unwanted impact, noise and noise.
    In order to further improve filtration, it is known to use a pendulum damping device, in addition to the usual damping system.
    An example of a pendulum damping device is described in patent application FR2981714 in the name of the applicant. This device comprises an annular support intended to be driven in rotation about its axis and pendular masses in two parts, mounted axially on either side of the support, at the periphery.
    Spacers passing through the lights in the support connect the two parts of the pendulum masses by riveting. A roller is mounted between a track
    -2bearing provided on each spacer and an edge of the corresponding lumen of the support.
    In this device, the rivet heads bear on the external radial faces of the pendulum masses, and extend axially from these faces. The volume swept in operation is relatively large, which requires dimensioning the surrounding parts accordingly.
    In patent application FR3009853, also in the name of the applicant, a method of mounting by force-fitting the ends of the spacers in openings of the pendulum masses eliminates the rivets, and therefore overcomes this drawback.
    However, a method of mounting the pendulum masses by conventional riveting may remain advantageous to implement, since it has the advantage of being simpler than the latter method, although it has other known drawbacks.
    In particular, a conventional riveting (rivet with a head and a chisel) over a significant thickness (greater than 15 mm) does not allow the hole on the head side to be correctly filled.
    A display is known to the inventive entity, which consists in gradually enlarging the holes as we approach the head, but this display is not valid when end pieces, like each parts of the pendulum masses are the same.
    The head counting also makes it possible to optimize the filling on the side of the rivet, but does not guarantee homogeneous filling of the assembly, on which a good resistance of the spacers in centrifugation depends.
    Another difficulty is making holes in a sheet if the diameter of the holes is less than the thickness of the sheet.
    In a particular model of pendulum damping device manufactured by the applicant, pendulum masses having a thickness of 8 mm, a rivet hole must have a diameter of 8 mm, or a rivet having a nominal diameter of 6 mm would be ideal for dimensions.
    GENERAL DESCRIPTION OF THE INVENTION.
    The present invention therefore relates to a method of manufacturing a pendulum damping device overcoming the above drawbacks.
    - 3 The process in question is of the type comprising those of a step of assembling at least one pendulum mass movably mounted on a support, this mass being formed by two weights arranged on either side of the support , connected between internal faces by at least one spacer passing through a lumen of the support, a roller being arranged between the pendulum mass and the support.
    The process for manufacturing a pendulum damping device according to the invention comprises a preliminary step comprising:
    - A first phase making by punching the first holes of a first predetermined diameter in each of the weights, the first predetermined diameter being at least equal to a thickness of each of these weights;
    - A second phase by punching a tapered bore to a predetermined depth in each of the first holes on an external face of the weights and pushing a material of these weights in the first holes;
    - A third phase making by punching second holes of a second predetermined diameter in the first holes;
    a difference between the thickness of each of the weights and the predetermined depth being at most equal to the second predetermined diameter.
    The preliminary step may also include a countersinking of the external faces of the weights around the tapered bore. The counterbore removes the tapered bore from the outside surfaces of the counterweights.
    The depth of the tapered bore and the countersink can be between 50% and 70%, preferably between 57% and 62%, preferably equal to 60% of the axial thickness of the counterweight.
    In the method of manufacturing a pendulum damping device according to the invention, the assembly step comprises:
    - A first insertion sequence in each of the second holes of a rivet formed by a metal rod having a nominal diameter substantially equal to the second predetermined diameter;
    - A second sequence of formation of two snaps by punching the ends of this rivet, each of the snaps being substantially embedded in the conical bore.
    -4When a counterbore phase is carried out, this counterbore allows, when punching the ends of the rivet, not to damage or deform the external surfaces of the counterweights. The countersinking also allows the rivet not to protrude axially from the outer surfaces of the weights.
    In the method of manufacturing a pendulum damping device according to the invention, a filling rate of the conical bore is greater than 80%, preferably greater than 90%.
    According to the invention also, all of the operations from the first sequence to the second sequence are executed cold.
    îo According to the invention also, the material of the weights can be a sheet of steel having a first Vickers hardness of between 100 and 450 Hv. The material of the metal rod can have a Brinell hardness of between 40 and 100 HrB
    According to the invention also, independently or in combination, the first predetermined diameter can be 8 mm, the second predetermined diameter can be 6 mm, the predetermined depth can be 2 mm, the thickness can be 8 mm and the depth of the the counterbore may be 2mm.
    The invention also relates to a pendulum damping device of the type of those comprising at least one pendulum mass movably mounted on a support, this mass being formed by two weights arranged on either side of the support, connected between internal faces by at least one spacer fixed by at least one rivet and passing through a lumen of the support, a roller being arranged between the support and the pendulum mass.
    According to the invention, this rivet is remarkable in that it comprises two snaps.
    These snaps are advantageously embedded, at least in part, in tapered bores on the external faces of the counterweights.
    The external faces of the counterweights may include a countersink around the tapered bore. The depth of the tapered bore and the countersink can be between 50% and 70%, preferably between 57% and 62%, preferably equal to 60% of the axial thickness of the counterweight.
    In the pendulum damping device according to the invention, a filling rate of these conical bores is greater than 80%, preferably greater than 90%.
    - 5 These few essential specifications will have made obvious to the skilled person the advantages provided by the pendulum damping device according to the invention compared to the state of the prior art.
    The roller guiding the movement of the pendulum mass relative to the support can be arranged between the spacer, then forming a bearing spacer, and an edge of the light. As a variant, the roller is arranged between openings made directly in the two counterweights and a light distinct from the light passed through by the spacer. In this variant, the openings of the weights are axially offset from the lumens of the support.
    Preferably, two rollers guide the movement of the pendulum mass. Preferably, the device comprises between 2 and 8 pendulum masses, preferably between 3 and 6.
    The detailed specifications of the invention are given in the description which follows in conjunction with the attached drawings. It should be noted that these drawings have no other purpose than to illustrate the text of the description and do not in any way constitute a limitation of the scope of the invention.
    BRIEF DESCRIPTION OF THE DRAWINGS.
    Figures 1a and 1b are respectively a partial view of a pendulum damping device known from the state of the art showing a pendulum mass, and an axial section of this pendulum mass showing its assembly by rivet.
    Figure 2 is a simplified block diagram of a manufacturing method according to the invention of a pendulum damping device.
    Figures 3a and 3b are respectively a partial view of a pendulum damping device according to the invention showing a pendulum mass, and an axial section of this pendulum mass showing its assembly by rivet.
    DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION.
    In the pendulum damping device 1 known from the state of the art, partially shown in FIG. 1a, a pendulum mass 2 is formed by two weights 3 arranged on either side of an annular support 4.
    As the axial section of FIG. 1b clearly shows, the flyweights 3 are connected between internal faces 5 by means of at least one spacer 6 (Three in the example shown). This spacer is fixed by at least one rivet (Two
    -6in the example shown), including a head 7 and a snap 8 protruding from the external faces 9 of the counterweights 3.
    In a manner known per se, the spacer 6 comprises a rolling track for a roller (not shown) rolling on the other hand on an edge of a slot 10 of the support 4.
    During a pendulum movement of the pendulum mass 2 when the support 4 is in rotation about the axis XX ', the volume swept by the heads 7 and the snaps 8 of the rivets 7, 8 is relatively large, which requires to size the surrounding rooms accordingly, as has already been indicated in the preamble.
    The method of manufacturing a pendulum damping device 11 according to the invention, illustrated in Figure 2, overcomes this drawback.
    Conventionally, such a manufacturing method comprises a step of assembling 12 a set of weights 13 on the annular support 4 to produce the pendular damping device 11.
    The set of weights 13 is most often produced during a preliminary step 14 from a metal sheet 15.
    In the manufacturing process 12, 14 according to the invention, the preliminary step 14 comprises:
    - A first phase 16 making by punching the first holes of a first diameter of 8 mm in weights 17 obtained from a steel sheet 15 having a thickness of 8 mm. This first phase 16 does not pose any feasibility problem, since the first diameter is at least equal to the thickness of the counterweights 17.
    - a second phase 18 producing, by punching, a conical bore 19 to a depth of 2 mm (shown in FIG. 3b showing a pendulum mass 20 at the end of the assembly step 12) in the first holes on the external face 9 of the weights 17 and pushing the metal of the weights 17 into these first holes.
    - A third phase 21 making by punching second holes of a second diameter of 6 mm at the bottom of the first bored holes. A thickness remaining to be drilled at the bottom of the first holes being no more than 6 mm, this third phase 21 also poses no feasibility problem, since the second diameter is at least equal to this remaining thickness.
    The set of weights 13 thus prepared can be assembled on the support 4 during the assembly step 12.
    In the manufacturing process according to the invention, this assembly step comprises:
    - A first sequence 22 of insertion of a rivet 23 formed by a metal rod having a nominal diameter of 6 mm in each of the second holes;
    - A second sequence 24 of forming two snaps 25 by punching the ends of the rivet 23. As clearly shown in Figure 3b, each of these snaps 25 is substantially embedded in the conical bore 19. to In this way, the rivets 23 do not exceed the weights 17, as can be seen in Figure 3a showing an assembled product (in partial view). A counterbore phase during the preliminary step 14 could also be provided to leave an axial distance between the rivets 23 and the outer surfaces 9. The counterbore may have a depth of 2mm.
    The manufacturing process described above makes it possible to achieve a filling rate of the conical bore 19, with good homogeneity, greater than 80%, which is the guarantee of good resistance of the pendulum mass 20 in centrifugation. .
    The operations of these assembly sequences 22, 24, 26 are carried out cold.
    The steel sheet 15 used preferably has a first Vickers hardness of between 100 and 450 Hv, and the metal rod of a rivet 23 advantageously has a Brinell hardness of between 40 and 100 HrB.
    It goes without saying that the invention is not limited to the preferred preferred embodiments described above.
    In particular, the dimensions indicated only correspond to a particular pendulum damping device model developed by the applicant where an assembly is carried out by rivets 23 with a nominal diameter of 6 mm while the sheet 15 to be punched has a thickness of 8 mm. Those skilled in the art will adapt the manufacturing process according to the invention as much as necessary to other nominal diameters of rivets 23 and to other sheet thicknesses 15.
    The invention therefore embraces, on the contrary, all possible variant embodiments within the limits of the subject of the claims below.
    权利要求:
    Claims (8)
    [1" id="c-fr-0001]
    1) Manufacturing method (12, 14) of a pendulum damping device (1, 11) of the type of those comprising a step of assembling (12) at least one pendulum mass (2, 20) mounted with movably on a support (4), said mass
    5 pendulum (2, 20) being formed of two weights (3, 17) arranged on either side of said support (4), connected between internal faces (5) by at least one spacer (6) passing through a light (10 ) of said support (4), a roller being arranged between the pendulum mass and the support, characterized in that it comprises a preliminary step (14) comprising:
    îo - a first phase (16) making by punching first holes of a first predetermined diameter in each of said weights (17), said first predetermined diameter being at least equal to a thickness of each of said weights (17);
    - a second phase (18) by punching a conical bore (19) on
    A predetermined depth in each of said first holes on an external face (9) of said weights (17) and pushing a material of said weights (17) into said first holes;
    - A third phase (21) producing by punching second holes of a second predetermined diameter in said first holes;
    A difference between said thickness and said predetermined depth being at most equal to said second predetermined diameter.
    [2" id="c-fr-0002]
    2) manufacturing method (12, 14) of a pendular damping device (11) according to claim 1, characterized in that said preliminary step comprises
    25 also a phase of countersinking the external faces (9) of the weights around the tapered bore.
    [3" id="c-fr-0003]
    3) Method of manufacturing (12, 14) of a pendulum damping device (11) according to any one of claims 1 and 2, characterized in that said
    30 assembly step (12) includes:
    - a first sequence (22) of insertion into each of said second holes of a rivet (23) formed by a metal rod (23) having a nominal diameter substantially equal to said second predetermined diameter;
    -9- a second sequence of formation of two snaps (25) by punching the ends of said rivet (23), each of said snaps (25) being substantially embedded in said conical bore (19).
    5
    [4" id="c-fr-0004]
    4) Manufacturing method (12, 14) of a pendulum damping device (11) according to any one of the preceding claims 2 or 3, characterized in that a filling rate of said conical bore (19) is higher at 80%, preferably greater than 90%.
    îo
    [5" id="c-fr-0005]
    5) A method of manufacturing (12, 14) of a pendulum damping device (11) according to any one of the preceding claims 2 to 4, characterized in that all of the operations from said first sequence (22) to said second sequence (24) are executed cold.
    15
    [6" id="c-fr-0006]
    6) A method of manufacturing (12, 14) of a pendulum damping device (11) according to any one of the preceding claims 2 to 5, characterized in that said material is a steel sheet (15) having a first Vickers hardness between 100 and 450 Hv, and in that a material of said metal rod (23) has a Brinell hardness between 40 and 100 HrB ..
    [7" id="c-fr-0007]
    7) A method of manufacturing (12, 14) of a pendulum damping device (11) according to any one of the preceding claims 1 to 6, characterized in that said first and second predetermined diameters are respectively 8 mm and 6 mm, said predetermined depth is 2 mm, and said thickness is 8
    25 mm.
    [8" id="c-fr-0008]
    8) Pendulum damping device (1, 11) of the type of those comprising at least one pendulum mass (2, 20) mounted movably on a support (4), said pendulum mass (2, 20) being formed of two weights (3, 17) arranged
    30 on either side of the support (4), connected between internal faces (5) by at least one spacer (6) fixed by at least one rivet (23) and passing through a lumen (10) of said support (4), a roller being arranged between the support (4) and the pendulum mass (2, 20), characterized in that said rivet (23) comprises two dowels (25).
    -109) Pendulum damping device (11) according to claim 8 above, characterized in that said snaps (25) are embedded, at least in part, in conical bores (19) of the external faces (9) of said weights ( 17).
    5 10) pendulum damping device (11) according to claim 9, characterized in that a filling rate of said conical bores (19) is greater than 80%, preferably greater than 90%.
    (State of the art) Fig. 1 b
    2/3
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    WO2012150399A1|2011-05-04|2012-11-08|Valeo Embrayages|Torsion damping device with limited travel pendular flyweights|
    DE102013208430A1|2012-05-16|2013-11-21|Schaeffler Technologies AG & Co. KG|centrifugal pendulum|
    DE102014213298A1|2014-07-09|2016-01-14|Schaeffler Technologies AG & Co. KG|Pendulum mass and use of a pendulum mass|KR20200083080A|2018-12-28|2020-07-08|주식회사 카펙발레오|Pendulum Damper and Torque Converter for Motor Vehicle Having the Same|EP1556628B1|2002-10-23|2006-07-26|Hasse & Wrede GmbH|Viscous torsional vibration damper comprising cooling channels|
    FR2981714B1|2011-10-19|2013-11-01|Valeo Embrayages|PENDULUM OSCILLATOR TYPE DAMPING SYSTEM WITH IMPROVED GUIDE DEVICE|
    JP5315427B2|2012-02-16|2013-10-16|株式会社エクセディ|Flywheel assembly|
    EP2861889B1|2012-06-19|2020-03-25|Schaeffler Technologies AG & Co. KG|Centrifugal-force pendulum device comprising a pendulum roller|
    DE102014202552A1|2013-02-12|2014-08-14|Schaeffler Technologies Gmbh & Co. Kg|Centrifugal pendulum device|
    FR3007091B1|2013-06-18|2015-07-03|Herakles|SELF-TEMPERATURE BONDING ASSEMBLY|
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    DE112014004404A5|2013-09-26|2016-06-16|Schaeffler Technologies AG & Co. KG|Centrifugal pendulum device|FR3097022B1|2019-06-06|2021-06-25|Valeo Embrayages|PENDULUM CUSHIONING DEVICE|
    CN110640071B|2019-09-27|2021-02-19|陕西科技大学|Method for riveting medium-thickness metal plate without protrusions on two sides|
    法律状态:
    2018-03-29| PLFP| Fee payment|Year of fee payment: 2 |
    2018-09-28| PLSC| Search report ready|Effective date: 20180928 |
    2020-03-31| PLFP| Fee payment|Year of fee payment: 4 |
    2021-03-30| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1752347A|FR3064323B1|2017-03-22|2017-03-22|METHOD FOR MANUFACTURING A PENDULUM DAMPING DEVICE AND DEVICE OBTAINED THEREBY|
    FR1752347|2017-03-22|FR1752347A| FR3064323B1|2017-03-22|2017-03-22|METHOD FOR MANUFACTURING A PENDULUM DAMPING DEVICE AND DEVICE OBTAINED THEREBY|
    DE112018001521.1T| DE112018001521T5|2017-03-22|2018-03-19|METHOD FOR MANUFACTURING A BUMP DAMPING DEVICE AND DEVICE OBTAINED BY THIS METHOD|
    PCT/FR2018/050654| WO2018172678A1|2017-03-22|2018-03-19|Method for manufacturing a pendulum damping device and device obtained by this method|
    KR1020197027381A| KR20190126813A|2017-03-22|2018-03-19|Method for manufacturing pendulum damping device, and device obtained by this method|
    CN201880013426.7A| CN110325762A|2017-03-22|2018-03-19|For manufacturing the method and the device that obtains by this method of pendulum-type damping unit|
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