• 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 damper for a motor vehicle torque transmission device, in particular of the long travel type, comprising a torque input element (22), a torque output element (28), at least one group (26) of different resilient members (26a, 26b), mounted between the input member and the torque output member and acting against the rotation of the input member (22) and the torque output member (28) relative to one another, the resilient members (26a, 26b) of the group of resilient members being arranged in series through a phasing member (30) such that the elastic members (26a, 26b) of the group (26) of elastic members deform in phase with each other, the group (26) of resilient members (26a, 26b) being received in a housing (44) asymmetrical with respect to a median radial plane of the housing (44).
    公开号:FR3023599A1
    申请号:FR1456726
    申请日:2014-07-11
    公开日:2016-01-15
    发明作者:Michael Hennebelle；Roel Verhoog
    申请人:Valeo Embrayages SAS；
    IPC主号:
    专利说明:

    [0001] The invention relates to a damper for a motor vehicle torque transmission device and to a motor vehicle torque transmission device having such a shock absorber. A damper for a motor vehicle torque transmission device is for example described in applications FR-A-2 947 025 or FR-A-2 988 455 in the name of the Applicant. It limits the transmission of torsional vibrations from the motor output shaft to the box input shaft. In known manner, such a damper comprises a torque input member, a torque output member, and resilient members mounted between the input member and the torque output member, and acting against the rotation of the input member and the torque output member relative to each other.
    [0002] When the damper is LTD ("Long Travel Damper" or "long travel damper"), it comprises several elastic members arranged in groups, the elastic members of the same group being arranged in series via a phasing member so that the elastic members of each group deform in phase with each other. The elastic members of the same group may be identical or have different characteristics, including length or stiffness. The phasing member may, in operation, compress the resilient members, both in the direction of rotation said forward direction in the opposite direction of rotation, said sense "retro". The forward direction corresponds to the case of operation in which a torque is transmitted from the torque input element to the torque output element. In certain phases of operation, for example when the user abruptly removes his foot from the accelerator, a resisting torque is transmitted from the torque output member to the torque input member, which may cause rotation of the phasing organ in the "retro" sense. The compression of the elastic members by the phasing member can then cause sliding of the elastic members relative to the input member and / or the torque output member. These sliding causes hysteresis in the transmission of torque by the damper. These slips can also cause premature wear of the elastic members by friction on the input member and / or the torque output member. The object of the present invention is to provide a damper for an improved motor vehicle torque transmission device, not having the disadvantages of the prior art or, at least, limiting their effects.
    [0003] Furthermore, it is known from [P-A-0 093 287 a clutch friction disk comprising different springs, received in windows, of different shapes, in the friction disc. The windows have in particular a radially internal side, which is rectilinear. The different springs in particular make it possible to adapt the rigidity and the vibration damping effect to different states of charge of the clutch. In order to achieve the object of the invention, there is provided a damper for a motor vehicle torque transmission device comprising a torque input element, a torque output element, at least one group of different elastic members. mounted between the input member and the torque output member and acting against the rotation of the input member and the torque output member relative to each other , the elastic members of the group of elastic members being arranged in series via a phasing member so that the elastic members of the group of elastic members deform in phase with each other, the group of resilient members being received in an asymmetrical housing relative to a median radial plane of the housing.
    [0004] Thus, advantageously, the housing receiving the elastic members may be shaped to provide satisfactory guidance of each of the elastic members, whereas in the prior art, only one elastic member per group was suitably guided, generally the longest or widest . Or in other words, according to the invention, it is ensured that all the elastic members of the same group of elastic members are, all along the housing, close to the inner face of the housing. More specifically, according to one aspect of the invention, it is ensured that the distance measured between the inner face of the housing and an outer periphery of each of the elastic members of the group is substantially constant throughout the housing. According to the invention, the shape of the housing is adapted to the shape of each elastic member of the same group of elastic member to ensure kinematic guidance of each of the elastic members during their compression. This ensures a better control of the hysteresis and the operation of the shock absorber. According to preferred embodiments, the damper may have one or more of the following characteristics, taken alone or in combination: the housing forms a bent tube whose bending radius measured along the housing, with respect to the center of the shock absorber, is variable; the bending radius is measured circumferentially along the housing; Throughout the housing, the cross section of the housing has a partially annular shape; each housing comprises first and second angular portions of substantially constant and distinct means of bending radii, and a third section connecting the first and second sections; - The third section is shaped so that the walls defining the housing are continuous and, preferably, do not show slope breaks; the torque input member comprises a first and a second guide rings, the housing being at least partially defined by a cup in the first and / or second guide ring; the elastic members are helical springs, preferably straight; at least one, preferably both, of the first section and the second section is shaped to ensure, in a position of the torque transmission device corresponding to an absence of torque transmission from the torque input element to the torque output member, at least one resilient member, preferably both, is in contact with a housing wall at six distinct points, preferably two of the contact points being located on a radially inner wall of the housing. housing and the other four points on a radially outer wall of the housing; the group of elastic members comprises at least first and second helicoidal springs of identical diameter and / or of different lengths; - The group of elastic members further comprises at least a third coil spring of less than the length of the first coil spring, of smaller diameter than the diameter of the first coil spring and disposed within the first coil spring. According to another aspect, the invention proposes a motor vehicle torque transmission device, comprising: - a clutch, comprising an input element coupled to a first shaft and an output element coupled to a second shaft, and - a damper according to one of the preceding claims, said damper being disposed between the output member of the clutch and the second shaft. According to a preferred embodiment, the transmission device may have the following characteristics: the device further comprises an impeller impeller and a turbine impeller, the impeller impeller being adapted to drive hydrokinetically the turbine wheel impeller through a reactor, the clutch and the turbine blade wheel being coupled to said output member.
    [0005] The invention will be better understood in the light of the description which follows, description given with reference to the accompanying drawings, in which: - Figure 1 shows schematically a torque transmission device between a motor output shaft and a shaft of gearbox input of a motor vehicle; - Figures 2 to 4 show schematically a damper adapted to be implemented in the torque transmission device of Figure 1, respectively in perspective in the assembled state, exploded view and seen from above; and - Figure 5 shows schematically in a view from above the damper of Figures 2 to 4, a guide ring has been removed.
    [0006] A torque transmission device 10 - here a hydrodynamic torque converter - is shown diagrammatically in FIG. 1. Such a torque transmission device is for example implemented in an automatic transmission of a motor vehicle. The torque transmission device may also be in a non-illustrated example a disk clutch. The torque transmission device 10 makes it possible to transmit the torque of a motor output shaft 12, typically the crankshaft, to a gearbox input shaft 14. To do this, the torque transmission device 10 can implement two parallel paths.
    [0007] A first route, implemented initially, consists in implementing an impeller impeller 16, adapted to hydrokinetically drive a turbine blade wheel 18 via a reactor 20. impeller 16 is coupled to the motor output shaft 12. The turbine wheel 18 is coupled to an assembly 22 of two guide rings of a damper 24, hereinafter referred to hereinafter as a front guide washer 22a and a guide washer. back 22b. Here, for example, the front guide ring 22a is secured in rotation with the turbine wheel 18. This can in particular be achieved by means of rivets. The damper 24, which will be described in more detail below with reference to Figures 2 to 5, essentially comprises one or more groups 26 of elastic members 26a, 26b coupling the set of guide washers 22 to an annular web 28 integral in rotation with the gearbox input shaft 14. The damper 24 also comprises a phasing member 30 to ensure that the elastic members 26a, 26b of the same group 26 act in phase. The damper 24 makes it possible to limit the transmission of vibrations and noise from the motor output shaft 12 to the gearbox input shaft 14. According to a second path, the torque transmission device 10 transmits the torque from the motor output shaft 12 to the transmission input shaft 14 through a locking clutch 32, the clutch 32 being, for example, of the disc type. This second path is implemented after the first, to avoid unwanted sliding between the turbine wheels and impeller steady state, that is to say after the hydraulic coupling of the output shaft motor 12 and the gearbox input shaft 14.
    [0008] The clutch 32 has an input member 34 coupled to the motor output shaft 12, and an output member 36 coupled to the guide washer assembly 22 by means of a splined hub 38 (see FIGS. 3), so that the damper 24 is also implemented in this case, to transmit the torque of the motor output shaft 12 to the gearbox input shaft 14. The fluted hub 38 is here attached to the rear guide ring 22b, for example using rivets. The damper 24 of the LTD type as illustrated in FIGS. 2 to 5 is described in more detail below. The two guide washers 22a, 22b of the damper 24 are integral in rotation. To do this, here, the front guide ring 22a has slots which receive lugs 23 of the rear guide washer 22b. These two guide washers 22a, 22b are elastically coupled to the annular web 28 by means of the groups 26 of resilient members 26a, 26b. The elastic members 26a, 26b may be of different lengths. The elastic members 26a, 26b are preferably straight springs with turns, which have a greater flexibility for the same length than the curved springs. It should be noted that a third coil spring of length less than the length of the first coil spring 26a, of diameter smaller than the diameter of the first coil spring 26a can be disposed inside the first coil spring 26a. The phasing member 30, integral in rotation with the guide washers 22a, 22b, ensures that the elastic members 26a, 26b of each group act in phase. Thus, the compression of the elastic members 26a, 26b makes it possible to filter the torsional vibrations of the motor output shaft 12 and not to transmit them, or at least at an attenuated level, to the box input shaft. 14. The compression of the elastic members 26a, 26b is formed between two bearing surfaces: one 28a integral with the web 28, here formed by the sides of a radial tab 40 of the web 28; the other 30a integral with the phasing member 30, here formed by the sides of a radial tab 42 of the phasing member 30. It should be noted here that the two bearing surfaces 28a, 30a are substantially inclined relative to a radial direction, for example at an angle of between 2 and 6 °.
    [0009] Furthermore, in order to avoid or at least reduce the sliding of the elastic members in the event of compression, each group 26 of elastic members 26a, 26b is received in a housing 44 located between the two guide rings 22a, 22b. The walls of this housing 44 are formed by the guide washers 22a, 22b to allow the guiding of the elastic members 26a, 26b during their possible compressions and thus prevent the sliding of these elastic members 26a, 26b. An internal volume of the housing 44 located between the guide rings 22a, 22b is available for the implantation of the elastic members. To do this, the walls of the housing formed by the guide rings 22a, 22b (and therefore the housing itself) are asymmetrical with respect to a median radial plane of the housing, that is to say with respect to a plane oriented along a radius of the damper 24 and dividing the housing 44 into two parts of identical length. The cross section of the internal volume of the housing 44 varies along the housing. In a preferred example, the section measured along the housing 44 is decreasing. It is thus possible to provide a housing for guiding the elastic members more effectively during their compression. Indeed, the inventors have found that the housings extending along a portion of torus, that is to say with a constant radius of curvature relative to the center of the damper, are generally provided to allow to guide effectively the larger of the two elastic members implemented. However, in this case, the lower-sized elastic member is then slid, because the guiding of the housing walls of this elastic member is not satisfactory. On the contrary, here, with asymmetrical walls, it is possible to adapt a section of the walls to one of the two elastic members and another section, distinct from the first, to the other of the two elastic members, thereby providing guidance. suitable for the two elastic members by the walls of the housing 44. The walls of each housing 44 formed by the guide washers 22a, 22b may in particular be formed by eyelets 46, 48 in the front and rear guide washers 22a, 22b, respectively. The blinkers 46, 48 are formed by the deformation of the surface of the guide washers 28a, 28b around an opening showing the springs 26a, 26b. The deformation of the surface of the guide washers 22a, 22b is such that the shape of this deformed surface corresponds substantially to the shape of the springs received. Due to the presence of the openings, the cross section of the housing 44 has a partially annular shape. Each housing 44 thus has a curved tube shape, of variable bending radius with respect to the center of the damper 24. A first section 44a of the housing 44, intended to receive a larger spring 26a, has a radius of curvature greater than a second section 44b, for receiving a smaller spring 26b. A third portion 44c of the housing 44, located between the first and second sections 44a, 44b ensures the regularity of the surfaces defining the housing 44, in particular their continuity, preferably without ruptures of slopes. More specifically, here, the bearing surfaces of the springs 26a, 26b defined by the eyelets are bent and form torus portions. Preferably, at least one of the first section 44a and the second section 44b is shaped to ensure, in a position of the damper corresponding to an absence of torque transmission, that at least one resilient member or spring 26a, 26b is in contact with a wall of the housing, in particular with the walls of the eyers 46, 48, at six distinct points. More preferably, the first section 44a and the second section 44b are shaped to ensure, in a position of the damper corresponding to a lack of torque transmission, that the two resilient members or springs 26a, 26b are in contact with a wall housing, especially with the walls of the blinkers 46, 48, at six distinct points. Preferably, on these six points of contact, two contact points are located on a radially inner wall and the other four points on a radially outer wall of the housing. Also preferably, on these contact points, two contact points, three are disposed on the front guide washer, and three are disposed on the rear guide washer. Thus, the groups of elastic members 26 are functionally interposed between the guide washers 22a, 22b and the annular web 28 to damp the vibrations from the motor output shaft and prevent their propagation to the input shaft of the gearbox. This damping is achieved by compressing the elastic members 26a, 26b. This compression of the elastic members 26a, 26b is achieved by limiting the sliding of the elastic members 26a, 26b. Furthermore, the phasing member 30 is also rotationally integral with a plate 50 carrying clocks with weights 52, which contributes to damping vibrations. Of course, the present invention is not limited to the single exemplary embodiment described above.
    权利要求:
    Claims (12)
    [0001]
    REVENDICATIONS1. Damper for a motor vehicle torque transmission device having a torque input member (22), a torque output member (28), at least one group (26) of different resilient members (26a, 26b) mounted between the input member and the torque output member and acting against the rotation of the input member (22) and the torque output member (28), one by relative to the other, the elastic members (26a, 26b) of the group of elastic members being arranged in series via a phasing member (30) so that the elastic members (26a, 26b) of the group (26) of elastic members deform in phase with each other, the group (26) of elastic members (26a, 26b) being received in a housing (44) asymmetrical with respect to a median radial plane of the housing (44).
    [0002]
    2. Damper according to claim 1, wherein the housing (44) forms a bent tube whose bending radius measured along the housing, relative to the center of the damper, is variable.
    [0003]
    3. Shock absorber according to one of claims 1 to 2, wherein, along the housing (44), the cross section of the housing (44) has a partially annular shape.
    [0004]
    4. Shock absorber according to one of claims 1 to 3, wherein each housing (44) comprises first (44a) and second (44b) angular sections of bending radii means substantially constant and distinct, and a third section (44c) connecting the first and second sections (44a, 44b).
    [0005]
    5. Damper according to claim 4, wherein the third section is shaped so that the walls delimiting the housing are continuous and, preferably, do not show slope breaks.
    [0006]
    6. Damper according to any one of the preceding claims, wherein the torque input member comprises a first (22a) and a second (22b) guide rings, the housing being at least partially defined by a blower (46). , 48) in the first and / or second guide ring (22a, 22b).
    [0007]
    Shock absorber according to claim 4, wherein at least one, preferably both, of the first section and the second section are shaped to ensure, in a position of the torque transmission device corresponding to a lack of transmission of torque from the torque input member to the torque output member, that at least one resilient member, preferably both, is in contact with a housing wall at six distinct points, preferably two of the points contact being located on a radially inner wall of the housing and the other four points on a radially outer wall of the housing.
    [0008]
    8. Damper according to any one of the preceding claims, wherein the resilient members (26a, 26b) are helical springs, preferably straight.
    [0009]
    9. Damper according to one of the preceding claims, wherein each group (26) of resilient members comprise at least first (26a) and second (26b) coil springs of the same diameter and / or different lengths.
    [0010]
    10. Damper according to claim 9, wherein the group (26) of elastic members (26a, 26b) further comprises at least one third coil spring of length less than the length of the first coil spring (26a), of smaller diameter to the diameter of the first coil spring (26a) and disposed within the first coil spring (26a).
    [0011]
    A motor vehicle torque transmitting device (10) comprising: - a clutch (32), comprising an input member (34) coupled to a first shaft (12) and an output member (22) coupled to a second shaft (14), and - a damper according to one of the preceding claims, said damper being disposed between the output member of the clutch and the second shaft.
    [0012]
    12 - Device according to the preceding claim, further comprising an impeller impeller (16) and a turbine impeller (18), the impeller impeller being adapted to hydrokinetically drive the impeller wheel (18) via a reactor (20), the clutch (32) and the turbine blade wheel (18) being coupled to said output member (22).
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2013140082A1|2012-03-20|2013-09-26|Valeo Embrayages|Torque transmission device for a motor vehicle|FR3057636A1|2016-10-18|2018-04-20|Valeo Embrayages|TORQUE TRANSMISSION DEVICE FOR A MOTOR VEHICLE|US1693765A|1926-05-06|1928-12-04|Parsons|Elastic drive|
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    DE3930715C2|1989-09-14|1991-07-11|J.M. Voith Gmbh, 7920 Heidenheim, De|
    JP3363302B2|1996-02-16|2003-01-08|株式会社エクセディ|Plate member of damper disk assembly|
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    CN103502682B|2011-03-08|2016-03-30|离合器实业有限公司|There is the friction clutch plate of damping spring|
    JP5573750B2|2011-03-28|2014-08-20|アイシン・エィ・ダブリュ株式会社|Damper device|
    WO2013146659A1|2012-03-27|2013-10-03|アイシン・エィ・ダブリュ工業株式会社|Arc spring and damper device|
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    JP5632444B2|2012-11-27|2014-11-26|株式会社エクセディ|Lock-up device|
    US20140374210A1|2013-06-20|2014-12-25|Valeo Otomotiv Sistemleri Endüstrisi A.S.|Powertrain mechanism for vehicles with internal combustion engine|
    CN203641364U|2013-12-30|2014-06-11|浙江华信汽车零部件有限公司|Large-rotation-angle multilevel-damping driven disc assembly|FR3023340B1|2014-07-04|2017-11-24|Valeo Embrayages|TORSION DAMPER FOR VEHICLE TRANSMISSION SYSTEM|
    JP6998648B2|2016-03-25|2022-01-18|株式会社エクセディ|Lock-up device for spring assembly and torque converter with it|
    FR3060689A1|2016-12-20|2018-06-22|Valeo Embrayages|TORSION DAMPER AND MOTOR VEHICLE|
    DE102017106230A1|2017-03-23|2018-09-27|Schaeffler Technologies AG & Co. KG|torsional vibration dampers|
    DE102018106451A1|2017-04-06|2018-10-11|Schaeffler Technologies AG & Co. KG|Torque transfer device|
    CN112879375B|2021-03-01|2021-11-05|湖南机电职业技术学院|Shock-absorbing hydraulic servo motor|
    法律状态:
    2015-07-31| PLFP| Fee payment|Year of fee payment: 2 |
    2016-01-15| PLSC| Publication of the preliminary search report|Effective date: 20160115 |
    2016-07-29| PLFP| Fee payment|Year of fee payment: 3 |
    2017-07-31| PLFP| Fee payment|Year of fee payment: 4 |
    2018-07-26| PLFP| Fee payment|Year of fee payment: 5 |
    2019-07-23| PLFP| Fee payment|Year of fee payment: 6 |
    2020-06-24| PLFP| Fee payment|Year of fee payment: 7 |
    2021-05-28| TP| Transmission of property|Owner name: VALEO KAPEC CO., LTD., KR Effective date: 20210422 |
    2021-07-07| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1456726A|FR3023599B1|2014-07-11|2014-07-11|DAMPER FOR A MOTOR VEHICLE TORQUE TRANSMISSION DEVICE|FR1456726A| FR3023599B1|2014-07-11|2014-07-11|DAMPER FOR A MOTOR VEHICLE TORQUE TRANSMISSION DEVICE|
    EP15172637.9A| EP2966313B1|2014-07-11|2015-06-18|Damper for a torque transmission device of a vehicle.|
    US14/792,175| US9746035B2|2014-07-11|2015-07-06|Damper for motor vehicle torque transmission device|
    JP2015136974A| JP6641107B2|2014-07-11|2015-07-08|Damper for automobile torque transmission device|
    KR1020150097757A| KR102361333B1|2014-07-11|2015-07-09|Damper for torque transmission device of automobile|
    CN201510404200.8A| CN105257755B|2014-07-11|2015-07-10|Damper for a motor vehicle torque transmission device|
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