WO2012032964A1 - 動吸振器 - Google Patents
動吸振器 Download PDFInfo
- Publication number
- WO2012032964A1 WO2012032964A1 PCT/JP2011/069536 JP2011069536W WO2012032964A1 WO 2012032964 A1 WO2012032964 A1 WO 2012032964A1 JP 2011069536 W JP2011069536 W JP 2011069536W WO 2012032964 A1 WO2012032964 A1 WO 2012032964A1
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- WIPO (PCT)
- Prior art keywords
- roller
- vibration absorber
- dynamic vibration
- rolling
- disk
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
- F16F15/1407—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers the rotation being limited with respect to the driving means
- F16F15/145—Masses mounted with play with respect to driving means thus enabling free movement over a limited range
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2121—Flywheel, motion smoothing-type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/21—Elements
- Y10T74/2121—Flywheel, motion smoothing-type
- Y10T74/2131—Damping by absorbing vibration force [via rubber, elastomeric material, etc.]
Definitions
- the present invention relates to a dynamic vibration absorber capable of reducing torsional vibration of a power transmission system that occurs in association with torque fluctuation of an automobile engine.
- a dynamic vibration absorber is known as a means for reducing torsional vibration generated in a power transmission system.
- a dynamic vibration absorber is incorporated in a flywheel portion that is coupled to an engine crankshaft.
- a flywheel body in which a dynamic vibration absorber is incorporated has a plurality of circular rolling chambers. Each rolling chamber contains a spherical or roller-shaped rolling element.
- the dynamic vibration absorber when the flywheel body rotates, the rolling elements that resonate with the torsional vibration of a predetermined order of the power transmission system roll in the rolling chamber. Thereby, a dynamic vibration absorbing action is exhibited and torsional vibration can be absorbed.
- centrifugal pendulum type dynamic vibration absorber when the rotational speed of the power transmission system is high, the rolling element smoothly rolls along the rolling surface of the rolling chamber, so that torsional vibration can be absorbed. .
- the rotational speed of the power transmission system is low, such as when the engine is started or stopped, the centrifugal force acting on the rolling elements becomes small, and the rolling elements move irregularly within the rolling chamber. For this reason, a rolling element may collide with the inner wall of a rolling chamber, and an abnormal noise, a fine vibration, etc. may occur.
- Patent Document 1 discloses a centrifugal pendulum type vibration absorber that suppresses irregular movement of the pendulum and prevents the generation of abnormal noise and fine vibration when the rotational speed of the power transmission system becomes slow. Yes.
- the centrifugal pendulum type absorber disclosed in this document absorbs torsional vibrations when a pendulum housed in a rolling chamber resonates.
- a stopper protrusion is provided at the center of the side surface of the rolling element that is a centrifugal pendulum.
- a guide groove is provided on the side wall of the rolling chamber.
- the guide groove extends along an arc substantially concentric with the rolling surface of the rolling chamber in which the rolling elements roll.
- the stopper protrusion is loosely inserted into the guide groove and the stopper protrusion is brought into contact with the wall of the guide groove, whereby the trajectory of the rolling element is restricted to an arc shape extending along the rolling surface.
- the width and length of the guide groove are such that the stopper projection does not contact the wall of the guide groove during normal rolling of the rolling element and the rolling element moves away from the rolling surface or the rolling element rolls over a set angle ⁇ .
- the stopper projection and the end wall of the guide groove are set so as to abut only when moved.
- annular protrusion is formed on the outer peripheral edge of the rolling element.
- annular groove is formed in which the annular protrusion of the rolling element is fitted with a predetermined gap. The movement of the rolling element in the axial direction is restricted by fitting the annular protrusion into the annular groove.
- a rolling element rolls the general part which is a part except an annular groove in a rolling surface.
- a pair of rolling chambers having guide grooves must be formed for each of a plurality of rolling elements.
- the machining of the guide groove requires high-precision cutting so that the rolling elements roll smoothly.
- the stopper protrusion may come into contact with the guide groove wall depending on how the rolling element moves. There was also a problem that a collision sound was generated.
- An object of the present invention is to provide a dynamic vibration absorber capable of effectively absorbing torsional vibration generated in a power transmission system with a simplified structure and reduced manufacturing cost.
- a dynamic vibration absorber that is attached to a power transmission system and absorbs torsional vibrations accompanying engine torque fluctuations.
- the dynamic vibration absorber is provided on each of the disk-shaped body having a plurality of rolling holes on the outer periphery of the disk-shaped body, the plurality of rollers loosely fitted in the rolling holes of the disk-shaped body, and both surfaces of the disk-shaped body. And a pair of ring-shaped guide plates attached one by one.
- the rolling hole has an outer inner peripheral edge extending along an arc, and a groove extending over the entire circumference of the roller is formed on the outer peripheral surface of the roller, and the outer inner peripheral edge of the rolling hole is formed in the roller groove.
- each of both side surfaces of the roller is provided with a shaft protruding from the center of the roller, and the shaft of the roller is supported by a pair of guide plates.
- the torsional vibration generated in the power transmission system is absorbed by the rolling element rolling along the inner peripheral edge of the rolling hole by the torsional vibration of the disk-shaped main body.
- the disk-shaped main body is formed by punching from a plate material having a certain thickness simultaneously with the outer shape of the disk-shaped main body and the plurality of rolling holes.
- the guide plate can also be formed by press work like the disk-shaped main body. Therefore, since no cutting is required when manufacturing the dynamic vibration absorber, the manufacturing cost of the dynamic vibration absorber can be kept low.
- the plurality of rolling holes are provided in the disk-shaped main body, and the size of the pair of guide plates is smaller than the size of the circle including the respective axes of the rolling elements loosely fitted in the rolling holes. ing. For this reason, the mass of a some roller can be enlarged relatively, and, thereby, the absorption capability of a torsional vibration can be improved. In this way, the roller loosely fitted into the rolling hole is formed in a disk shape, and the thickness of the roller is changed to adjust the mass of the roller, thereby effectively absorbing the torsional vibration generated in the power transmission system. Can do.
- an elastic ring is attached to the shaft of the roller.
- the roller is preferably formed such that a disk having a small outer diameter is sandwiched between a pair of disks having a large outer diameter.
- the rollers can be formed by stacking the disks so that the disks having a small outer diameter are sandwiched by a pair of disks having a large outer diameter and press-fitting the shaft into the center hole of each disk. . Therefore, since no cutting is required when manufacturing the roller, the manufacturing cost of the dynamic vibration absorber can be further reduced.
- the disk-shaped main body is preferably formed by being punched from a plate material having a certain thickness together with the outer shape of the disk-shaped main body and the rolling holes.
- the disc-shaped main body is preferably formed by precision punching using hydrostatic pressure.
- a convex piece for supporting the roller shaft is preferably formed on the outer peripheral edge of the guide plate.
- the convex piece is preferably formed in an arc shape.
- (A) is a partial side view showing a dynamic vibration absorber according to an embodiment of the present invention
- (b) is a partial cross-sectional view taken along line 1b-1b of FIG. 1 (a).
- the side view which shows the whole disk-shaped main body which comprises a dynamic vibration absorber.
- (A) is a perspective view which shows the roller to which the elastic ring is not attached
- (b) is a perspective view which shows the roller to which the elastic ring was attached.
- the partial perspective view which shows the state which a dynamic vibration absorber is attached to the axis
- the side view which shows the dynamic vibration damper which concerns on another example of this invention.
- the dynamic vibration absorber includes a disk-shaped main body 1, a plurality of rollers 2, and a pair of guide plates 3a and 3b.
- Six rolling holes 4 are formed in the outer peripheral portion of the disc-shaped main body 1.
- the rolling holes 4 are arranged around the center of the disc-shaped main body 1 with an equiangular interval.
- the rolling hole 4 has a substantially elliptical shape.
- the rolling hole 4 has an outer inner peripheral edge 5 and an inner inner peripheral edge 6 having different shapes.
- the curvature radius of the outer inner peripheral edge 5 is set to be smaller than the curvature radius of the outer peripheral edge 7 of the disc-shaped main body 1.
- the outer inner peripheral edge 5 extends along an arc having a predetermined radius of curvature.
- the inner inner peripheral edge 6 extends along a curved line at both ends, and extends along a straight line at other portions.
- a center hole 8 through which a shaft extending from the power transmission system is inserted is formed at the center of the disc-shaped main body 1.
- six attachment holes 16 are formed in the disc-shaped main body 1.
- Each mounting hole 16 is disposed so as to correspond to the rolling hole 4 on the inner side of the rolling hole 4.
- the disk-shaped main body 1 is formed by being punched from a plate material having a certain thickness together with the outer shape of the disk-shaped main body 1, the plurality of rolling holes 4, the center hole 8, the plurality of mounting holes 16, and the like.
- the roller 2 is formed in a substantially disk shape as a whole. More specifically, the roller 2 is composed of a pair of first disks having a large outer diameter and a second disk having a small outer diameter, and the second disk is sandwiched from both surfaces by the pair of first disks. On the outer peripheral edge of the roller 2 formed in this way, a groove 9 is formed over the entire circumference of the roller 2.
- the groove 9 is located at the center in the axial direction on the outer peripheral edge of the roller 2.
- the outer peripheral edges of both side surfaces of the roller 2 are formed as ribs 10a and 10b, respectively.
- the groove 9 is located between the ribs 10a and 10b. That is, the outer peripheral edges of the pair of first disks having a large outer diameter are formed as ribs 10a and 10b, respectively.
- a space surrounded by the outer peripheral edge of the second disk having a small outer diameter and the pair of first disks is formed as the groove 9.
- the roller 2 has a pair of side surfaces 11a and 11b. Each of the pair of side surfaces 11a and 11b is formed with one shaft 12a and 12b protruding from the center of the roller 2. One elastic ring 13a, 13b is attached to each base end of the shafts 12a, 12b.
- the roller 2 is loosely fitted in the rolling hole 4 of the disc-shaped main body 1.
- the roller 2 can roll along the outer inner peripheral edge 5 of the rolling hole 4 formed in the disk-shaped main body 1.
- Guide plates 3 a and 3 b are attached to both surfaces of the disc-shaped main body 1. Both guide plates 3a and 3b are formed in a ring shape having the same shape and the same dimensions. Specifically, the guide plates 3a and 3b have gaps between the shafts 12a and 12b of the roller 2 and the arcuate convex pieces 14 when the roller 2 rolls along the outer inner peripheral edge 5 of the rolling hole 4. It is formed in the shape and dimension which can have.
- Six arc-shaped convex pieces 14 are formed on the outer peripheral edges of the guide plates 3a and 3b.
- the arcuate convex pieces 14 are arranged at equiangular intervals around the centers of the guide plates 3a and 3b.
- Six attachment holes 17 are formed in the guide plates 3a and 3b. Each mounting hole 17 is disposed so as to correspond to the arcuate convex piece 14 on the inner side of the arcuate convex piece 14.
- the guide plates 3a and 3b are arranged so as to sandwich the disc-shaped main body 1 from both sides, and the mounting holes 17 of the guide plates 3a and 3b are aligned with the mounting holes 16 of the disc-shaped main body 1.
- a pair of guide plates 3a and 3b are attached to both surfaces of the disc-shaped main body 1 by inserting and fixing the pins 18 into the mounting holes 17 of the guide plates 3a and 3b and the mounting holes 16 of the disc-shaped main body 1. It has been.
- the roller 2 loosely fitted in the rolling hole 4 is sandwiched between a pair of guide plates 3a and 3b attached to the disc-shaped main body 1. Specifically, the roller 2 is sandwiched between a pair of guide plates 3a and 3b at a portion closer to the center of the disc-shaped body 1 than the shafts 12a and 12b. For this reason, the roller 2 is held by the guide plates 3a and 3b so as not to fall off the rolling hole 4.
- the roller 2 is loosely fitted into the rolling hole 4.
- the outer inner peripheral edge 5 of the rolling hole 4 is engaged with the groove 9 of the roller 2.
- the outer peripheral edge 5 of the rolling hole 4 is sandwiched between the pair of ribs 10 a and 10 b of the roller 2. That is, the guide plates 3a and 3b are attached to both surfaces of the disc-shaped main body 1 so as to sandwich the roller 2 in a state where the outer inner peripheral edge 5 of the rolling hole 4 is sandwiched between the pair of ribs 10a and 10b. Yes.
- the roller 2 is attached to the disc-shaped main body 1 so that the outer peripheral surfaces of the guide plates 3a and 3b are brought into contact with the shafts 12a and 12b and the outer inner peripheral edge 5 is engaged with the groove 9. Accordingly, the roller 2 is loosely fitted into the rolling hole 4 and attached to the disc-shaped main body 1 without falling off the rolling hole 4.
- the position of the roller 2 does not change and does not move from the center position of the rolling hole 4.
- the rotational speed of the dynamic vibration absorber increases with engine torque fluctuation, that is, when the vehicle is accelerated, the position of the roller 2 changes and moves backward with respect to the rotational direction of the dynamic vibration absorber.
- the rotational speed of the dynamic vibration absorber becomes slow, that is, when the vehicle decelerates, the position of the roller 2 changes and moves forward with respect to the rotational direction of the dynamic vibration absorber.
- the roller 2 is supported by the arc-shaped convex pieces 14 of the guide plates 3a and 3b via the shafts 12a and 12b. As described above, the roller 2 moves forward and backward along the outer peripheral edge 5 of the rolling hole 4 in accordance with a change in the rotational speed of the dynamic vibration absorber. However, the roller 2 is formed so as not to cause the shafts 12a and 12b to interfere with the arcuate convex piece 14 during its own rolling. Further, even when the dynamic vibration absorber rotates, the roller 2 hardly rolls along the outer inner peripheral edge 5. Rolling of the roller 2 absorbs torsional vibration generated in the power transmission system due to engine torque fluctuation, but the rolling distance of the roller 2 at that time is very small.
- the roller 2 loosely fitted in the rolling hole 4 receives a centrifugal force and is engaged with the outer inner peripheral edge 5 of the rolling hole 4.
- the rotational speed of the dynamic vibration absorber is reduced when the engine is started or stopped, the centrifugal force received by the roller 2 is reduced, so that the roller 2 moves away from the outer inner peripheral edge 5 and the shaft of the roller 2 12a and 12b are brought into contact with the arcuate convex pieces 14 of the guide plates 3a and 3b through the elastic rings 13a and 13b.
- the disc-shaped main body 1 is formed by punching from a plate material having a certain thickness at the same time as the outer shape of the disc-shaped main body 1, the plurality of rolling holes 4, and the like. Further, similarly to the disc-shaped main body 1, the guide plates 3a and 3b can also be formed by press working. Therefore, since no cutting is required when manufacturing the dynamic vibration absorber, the manufacturing cost of the dynamic vibration absorber can be kept low.
- the dynamic vibration absorber has a structure in which the roller 2 is loosely fitted into the rolling hole 4 of the disc-shaped main body 1 and the roller 2 is sandwiched by the pair of guide plates 3a and 3b so as not to be detached from the rolling hole 4. Have.
- the size of the pair of guide plates 3 a and 3 b is smaller than the size of a circle including the shafts 12 a and 12 b of the roller 2 loosely fitted in the rolling holes 4.
- the mass of the plurality of rollers 2 can be relatively increased, and thereby the torsional vibration absorbing ability can be increased.
- the mass of the roller 2 can be freely adjusted, the mass of the roller 2 can be reduced by forming ring-shaped grooves on the side surfaces 11a and 11b of the roller 2, for example. Can do.
- the mass of the roller 2 can be increased by increasing the thickness of the roller 2 within a range that can be attached by replacing the guide plates 3a and 3b with other guide plates.
- the torsional vibration generated in the power transmission system can be effectively absorbed by appropriately changing the mass of the roller 2.
- the roller 2 is formed by sandwiching a disk having a small outer diameter by a pair of disks having a large outer diameter. According to this configuration, the rollers 2 can be formed by superimposing the disks so that the disks with a small outer diameter are sandwiched by a pair of disks with a large outer diameter and press-fitting the shaft into the center hole of each disk. it can. Therefore, since the cutting process is not required when manufacturing the roller 2, the manufacturing cost of the dynamic vibration absorber can be further reduced.
- the inner inner peripheral edge 6 may be an arc having a predetermined radius of curvature, similar to the outer inner peripheral edge 5.
- the disc-shaped main body 1 may be manufactured by a precision punching process (fine blanking process) using hydrostatic pressure in addition to a general punching process.
- a general punching process a fracture surface is generated in the disk-shaped main body 1.
- the outer peripheral edge of the disk-shaped main body 1 is generated without causing a fracture surface in the disk-shaped main body 1. 7, the rolling hole 4 and the center hole 8 can be sheared. Therefore, the disk-shaped main body 1 having high dimensional accuracy can be produced.
- the pair of guide plates 3 a and 3 b are fixed to both surfaces of the disc-shaped main body 1 inside the arc-shaped convex piece 14, but both surfaces of the disc-shaped main body 1 outside the arc-shaped convex piece 14. It may be fixed to.
- an outer peripheral edge 20 a of a pair of guide plates 20 having a ring shape is attached to a disk-shaped main body 25 in addition to an arc-shaped convex piece 24 that supports a roller 23 in a rolling hole 21.
- the attachment piece 26 may be formed.
- Each mounting piece 26 extends in the radial direction from the center of the guide plate 20, and is disposed at equal angular intervals around the center of the guide plate 20.
- the mounting pieces 26 and the arc-shaped convex pieces 24 are alternately arranged over the entire circumference of the guide plate 20 at the outer peripheral edge 20 a of the guide plate 20.
- a pair of guide plates 20 are attached to both surfaces of the disc-shaped main body 25 by inserting and fixing the pins 28 in the respective mounting pieces 26 and the respective mounting holes of the disc-shaped main body 25.
- the number of rolling holes 4 formed on the outer peripheral portion of the disc-shaped main body 1 and the number of rollers 2 that are loosely fitted in the rolling holes 4 may be changed to arbitrary numbers.
- each mounting hole 16 does not have to correspond to the rolling hole 4. Further, the position of each mounting hole 17 may not correspond to the arcuate convex piece 14.
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
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Abstract
Description
Claims (7)
- 動力伝達系に取り付けられてエンジンのトルク変動に伴う捩り振動を吸収する動吸振器において、
円盤状本体の外周部に複数の転動孔を有する円盤状本体と、
前記円盤状本体の転動孔に遊嵌される複数のローラと、
前記円盤状本体の両面のそれぞれに一つずつ取り付けられる一対のリング状のガイド板とを備え、
前記転動孔は、円弧に沿って延びる外側内周縁を有し、
前記ローラの外周面には、前記ローラの全周に亘り延びる溝が形成され、
前記ローラの溝には、前記転動孔の外側内周縁が係合され、
前記ローラの両側面のそれぞれには、前記ローラの中心から突出する軸が設けられ、
前記ローラの軸は、前記一対のガイド板によって支持されていることを特徴とする動吸振器。 - 請求項1記載の動吸振器において、
前記ローラの軸には、弾性リングが装着されていることを特徴とする動吸振器。 - 請求項1又は2記載の動吸振器において、
前記ローラは、外径の大きな一対の円盤により外径の小さい円盤を挟むようにして形成されていることを特徴とする動吸振器。 - 請求項1~3のうちいずれか一項に記載の動吸振器において、
前記円盤状本体は、前記円盤状本体の外形及び前記転動孔と共に、一定の厚みを有する板材から打ち抜かれて形成されることを特徴とする動吸振器。 - 請求項4記載の動吸振器において、
前記円盤状本体は、静水圧を利用した精密打抜き加工により形成されることを特徴とする動吸振器。 - 請求項1~5のうちいずれか一項に記載の動吸振器において、
前記ガイド板の外周縁には、前記ローラの軸を支持するための凸片が形成されていることを特徴とする動吸振器。 - 請求項6記載の動吸振器において、
前記凸片は円弧状に形成されていることを特徴とする動吸振器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2012532935A JP5851406B2 (ja) | 2010-09-08 | 2011-08-30 | 動吸振器 |
DE112011102989.6T DE112011102989B4 (de) | 2010-09-08 | 2011-08-30 | Schwingungstilger |
CN201180043776.6A CN103097765B (zh) | 2010-09-08 | 2011-08-30 | 动态吸振器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010-200640 | 2010-09-08 | ||
JP2010200640 | 2010-09-08 |
Publications (1)
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WO2012032964A1 true WO2012032964A1 (ja) | 2012-03-15 |
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PCT/JP2011/069536 WO2012032964A1 (ja) | 2010-09-08 | 2011-08-30 | 動吸振器 |
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US (1) | US8850927B2 (ja) |
JP (1) | JP5851406B2 (ja) |
CN (1) | CN103097765B (ja) |
DE (1) | DE112011102989B4 (ja) |
WO (1) | WO2012032964A1 (ja) |
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FR3044059B1 (fr) * | 2015-11-25 | 2017-11-24 | Valeo Embrayages | Dispositif d'amortissement pendulaire |
JP6471737B2 (ja) * | 2016-10-31 | 2019-02-20 | トヨタ自動車株式会社 | 捩り振動低減装置 |
JP6791057B2 (ja) * | 2017-08-09 | 2020-11-25 | トヨタ自動車株式会社 | 振り子式捩り振動低減装置 |
DE102021106179A1 (de) | 2021-03-15 | 2022-09-15 | Bayerische Motoren Werke Aktiengesellschaft | Drehschwingungsdämpfer und Antriebsstrang für ein Kraftfahrzeug sowie Verfahren |
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- 2011-08-30 JP JP2012532935A patent/JP5851406B2/ja active Active
- 2011-08-30 CN CN201180043776.6A patent/CN103097765B/zh active Active
- 2011-08-30 US US13/221,277 patent/US8850927B2/en active Active
- 2011-08-30 WO PCT/JP2011/069536 patent/WO2012032964A1/ja active Application Filing
- 2011-08-30 DE DE112011102989.6T patent/DE112011102989B4/de not_active Expired - Fee Related
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JPH08121187A (ja) * | 1994-10-20 | 1996-05-14 | Unisia Jecs Corp | 遠心振り子式吸振器 |
JPH09236155A (ja) * | 1996-02-29 | 1997-09-09 | Unisia Jecs Corp | 遠心振り子式吸振器 |
JP2000283242A (ja) * | 1999-03-16 | 2000-10-13 | Mannesmann Sachs Ag | 振動減衰装置 |
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Publication number | Publication date |
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JP5851406B2 (ja) | 2016-02-03 |
DE112011102989B4 (de) | 2016-01-21 |
DE112011102989T5 (de) | 2013-08-14 |
US20120222515A1 (en) | 2012-09-06 |
US8850927B2 (en) | 2014-10-07 |
CN103097765A (zh) | 2013-05-08 |
JPWO2012032964A1 (ja) | 2014-01-20 |
CN103097765B (zh) | 2014-12-10 |
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