WO2015188821A1 - Torsional vibration damper - Google Patents
Torsional vibration damper Download PDFInfo
- Publication number
- WO2015188821A1 WO2015188821A1 PCT/DE2015/200341 DE2015200341W WO2015188821A1 WO 2015188821 A1 WO2015188821 A1 WO 2015188821A1 DE 2015200341 W DE2015200341 W DE 2015200341W WO 2015188821 A1 WO2015188821 A1 WO 2015188821A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flywheel
- cover
- torsional vibration
- vibration damper
- radially
- Prior art date
Links
Classifications
-
- 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
Definitions
- the invention relates to a torsional vibration damper, in particular for the drive train of a motor vehicle.
- Torsional vibration dampers also called Torsionsschwingungsdämpfer, especially equipped with a centrifugal pendulum device, are well known in the art. So centrifugal pendulum devices are known to
- a flywheel are mounted as a flywheel and damp torsional vibrations caused by a drive motor designed as an internal combustion engine and which are transmitted to the drive train, which is regarded as disturbing.
- the flywheel is usually bolted directly to the crankshaft of the engine and arranged in a bell housing.
- the clutch is usually arranged on the flywheel and fixed to connect the drive motor by means of the clutch and a clutch disc provided with the transmission input shaft to transmit torque from the drive motor to the transmission input shaft can.
- the ambient conditions of the flywheel for example, the abrasion of the friction linings of the clutch disc and in the bell housing from the outside penetrating dirt, such as oil, dust or water, before, which can then settle the centrifugal force pen.
- the known centrifugal pendulum devices usually provide at least one flange and flyweights arranged thereon by means of roller elements, wherein the roller elements engage in guideways of the flange and in guideways of the flyweights, the dirt can settle on the roller elements and / or the guideways and the movement of the roller elements and thus impairing the function of the centrifugal pendulum device.
- due to the pollution and the resulting malfunction also unwanted noise may occur, which also applies to avoid.
- An embodiment of the invention relates to a torsional vibration damper with a disc-shaped flywheel having a radially inner first edge region and a radially outer second edge region, wherein between the two edge regions a centrifugal pendulum device is connected to the flywheel, wherein a disc-shaped cover is provided, which with the flywheel is connected to form a closed space area in which the centrifugal pendulum device is received.
- the cover element is connected to the flywheel mass radially on the outer edge region of the flywheel mass or, in particular, bears under prestressing. As a result, a secure connection is achieved to form a closed volume.
- the cover element is connected to an end face of the radially outer edge region or, in particular, bears under prestressing.
- a simple connection can be achieved for example by means of laser welding or the like.
- the cover element is connected to the radially outer edge region of the flywheel by welding or gluing.
- the cover is attached radially inwardly by means of a screw or rivet on the flywheel. This allows a connection to be used that already exists elsewhere. This saves effort and assembly time.
- Flywheel is also connected to the flywheel. Accordingly, it is advantageous if the cover rests radially inward on the flange. As a result, no further connection is required because the connection of the flange is also used to connect the cover.
- the cover is connected radially inwardly by means of a screw connection for connecting the flywheel with a crankshaft of an internal combustion engine with the flywheel.
- the cover is advantageously radially inward on the flywheel auf.Dde then no further connection is needed because the connection of the flywheel to the crankshaft is also used to connect the cover.
- the cover element is a cover plate. This allows a stable training with good connection and high longevity.
- FIG. 1 a schematic representation of a fourth embodiment of a torsional vibration damper according to the invention in half section.
- the torsional vibration damper 1 on a disc-shaped flywheel 3, a soft radially inner first edge region 4 and a radially outer second edge region 5 has.
- the radially inner first edge region 4 is oriented substantially in the radial direction and preferably serves for fastening the flywheel 3 to a crankshaft of an internal combustion engine or the like.
- the radially inner edge region 4 has a central opening 6, which can receive a shoulder of the crankshaft for centering.
- holes 7 are provided for screwing the flywheel 3 to the crankshaft by means of screws 8.
- the radially outer second edge region 5 is aligned substantially in the axial direction and carries an outer toothing 9, which is placed as a ring gear on the extending in the axial direction edge region 5.
- the radial direction is defined with respect to the axis of rotation 10 of the torsional vibration damper and a plane perpendicular thereto. The radial direction is in this plane perpendicular to the axis of rotation 10, an axial direction is aligned in the direction of the axis 10 and parallel thereto.
- the flywheel mass 3 is preferably designed as a rigid flywheel, in particular made of sheet metal or alternatively also of cast material.
- two regions 1 1, 12 are provided, which are aligned in the radial direction. These regions 1 1, 12 are connected to the regions 4, 5 via bulges or gradations 13, so that the flywheel mass 3 has, in section, a potted structure between the radially inner edge region 4 and the radially outer edge region 5.
- the centrifugal pendulum device 2 is connected in the flat area 1 1 with the flywheel 3.
- the flange 14 of the centrifugal pendulum device 2 is connected radially inwardly by means of the rivet element 15 with the flywheel 3.
- the rivet element 15 in each case passes through an opening of the flange 14 and the flywheel 3.
- the flange 14 is arranged starting from the radially inner attachment point 16 projecting radially outward.
- the flange 14 is flat, but it can also be potted or similar.
- flyweights 17 are arranged radially on the outside, which are arranged displaceable on the flange 14 via roller elements 18 designed as bearing elements.
- guide tracks 19 are provided both in the flyweights 17 and in the flange 14, which allow a displacement of the flyweights 17 both in the circumferential direction and in the radial direction relative to the flange 14.
- the second edge region 5 is configured as an annular region pointing in the axial direction, which radially outwardly overlaps the flyweights 17 and the flange 14. Furthermore, an approximately L-shaped additional element 20 is also connected radially outside as an encoder for a sensor with the flywheel mass ,
- a cover element 21 is provided, which extends essentially in the radial direction and rests radially outward on the end face 22 of the radially outer edge region 5.
- the cover element 21 is guided radially inward to the extent that it lies against the radially inner edge region 4.
- the cover 21 has openings 23 which are aligned with the openings 7 for reaching through the screws 8. The cover thus closes an internal volume 24 between the flywheel 3 and the cover 21st In this inner volume 24, the centrifugal pendulum device 2 is arranged and protected from contamination.
- the cover 21 is formed as a cover plate, which is connected radially outside with the edge region 5, in particular welded, is. Radially inside the cover 21 may be placed only on the edge region 4, wherein a seal is made by the screw. Also, the cover plate connected to the edge region 4, as welded, be.
- the cover 21 may be formed as a flat disc, or, as shown in Figure 1, be designed as a somewhat potted disc to provide the space required for the centrifugal pendulum device 2 space available.
- the torsional vibration damper 101 has a disk-shaped flywheel 103, which a radially inner first edge region 104 and a radially outer second edge region 105 has.
- the radially inner first edge region 104 is oriented essentially in the radial direction and preferably serves to fasten the flywheel 103 to a crankshaft of an internal combustion engine or the like.
- the radially inner edge region 104 has a central opening 106, which can receive a shoulder of the crankshaft for centering. Also, in the radially inner edge region 104 holes 107 for screwing the
- Flywheel 103 provided with the crankshaft by means of screws 108.
- the radially outer second edge region 105 is aligned substantially in the axial direction and carries an outer toothing 109, which is placed as a ring gear on the extending in the axial direction of the edge region 105.
- the radial direction is defined with respect to the axis of rotation 1 10 of the torsional vibration damper and a plane perpendicular thereto.
- the radial direction lies in this plane perpendicular to the axis 110 and an axial direction is in the direction of the axis
- the flywheel 103 is preferably designed as a rigid flywheel, in particular made of sheet metal or alternatively also of cast material.
- two regions 1 1 1 1, 1 12 are provided, which are aligned in the radial direction. These areas 1 1 1, 1 12 are connected to the areas 104, 105 via bulges or gradations 1 13, so that the flywheel 103 between the radially inner edge region 4 and the radially outer edge region 105 in
- Section has a potted structure.
- the centrifugal pendulum device 102 is as described for Figure 1 in the flat area
- the flange 14 of the centrifugal pendulum device 102 is connected radially inwardly to the flywheel 103 by means of the rivet element 15.
- the rivet element 1 15 engages in each case an opening of flange 1 14 and flywheel 103.
- the flange 1 14 is starting from the radially inside lying attachment point 1 16 arranged radially outwardly projecting.
- the flange 1 14 is flat, but it may also be potted or similar.
- flyweights 1 17 are arranged radially on the outside, which are arranged on the flange 1 14 designed to be displaceable on roller elements 1 18 formed as bearing elements.
- both in the flyweights 1 17 and in the flange 1 14 guideways 1 19 are provided which allow a displacement of the flyweights 1 17 both in the circumferential direction and in the radial direction relative to the flange 1 14. Accordingly, in the case of torsional vibrations, energy is temporarily withdrawn from the drive train and supplied again at a different time, so that an overall damping of the torsional vibration takes place.
- the second edge region 105 is designed as an annular region pointing in the axial direction, which radially overlaps the flyweights 1 17 and the flange 1 14. Furthermore, an approximately L-shaped additional element 120 is connected radially outside as a donor for a sensor with the flywheel.
- FIG. 2 shows that a cover element 121 is provided, which extends essentially in the radial direction and rests radially outward on the end face 122 of the radially outer edge region 105.
- the cover element 121 is guided radially inward to the extent that it rests against the region 11 1 at which the flange 14 is connected to the flywheel 103.
- the cover 121 has an opening 123 which are aligned with the openings for riveting the flywheel 103 and flange 1 14, so that the cover can be riveted together with the flange 1 14 and the flywheel.
- the cover thus closes an inner volume 124 between the flywheel 103 and the cover 121st In this inner volume 124, the centrifugal pendulum device 102 is arranged, which thereby protects against contamination.
- the cover element 121 is preferably designed as a cover plate, which is connected radially on the outside with the edge region 105, in particular as welded. Radially inside, the cover element 121 can only be applied to the rich be placed 1 1, whereby it undergoes a seal by riveting. Also, the cover plate with the range 1 1 1 connected in other ways, such as welded, be.
- the cover 21 is preferably formed as a potted or flat disk.
- FIGs 3 and 4 respectively show a third and a fourth embodiment of a torsional vibration damper 201, 301, which is similar in each case to an embodiment shown in Figures 1 or 2 in that the flywheel is formed with the cover substantially identical or similar, wherein However, the design of the centrifugal pendulum device differs.
- centrifugal pendulum devices 2 and 102 of Figures 1 and 2 have a flange 14, 1 14, on both sides of which respective centrifugal weights 17, 17 are arranged, which are held with roller elements 18, 1 18 at the centrally disposed flange 14, 1 14 displaceable ,
- centrifugal pendulum devices 202 and 302 of Figures 3 and 4 have two adjacently disposed flanges 214 and 314, which are formed as annular discs in the section about fork-shaped and arranged so that between see the two flanges 214 and 314, the flyweights 217 and 317 are arranged displaceably by means of the roller elements 218, 318.
- the two flanges 214 and 314 are connected by means of a rivet element 215, 315 with the respective flywheel 203, 303.
- the cover element 221 of the third exemplary embodiment of FIG. 3 extends essentially in the radial direction and is applied radially outward on the end face 222 of the radially outer edge region 205.
- the cover element 221 is guided radially inward to the extent that it lies against the radially inner edge region 204.
- the cover element 221 openings 223 which are aligned with the openings 207 for reaching through the screws 208.
- the cover 221 thus closes an internal volume 224 between the flywheel 203 and the cover 221. In this inner volume 224, the centrifugal pendulum device 202 described above is arranged and protected from contamination.
- the cover 221 is formed as a cover plate, which is connected radially outside with the edge region 205, in particular welded, is. Radially inside the cover 221 may be placed only on the edge portion 204, wherein a seal is made by the screw. Also, the shroud may be bonded to the edge portion 204 as welded.
- the cover member 221 may be formed as a flat disc, or, as shown in Figure 3, be designed as a somewhat potted disc to provide the space required for the centrifugal pendulum device 202 space available.
- FIG. 4 also shows that a cover element 321 is provided, which extends essentially in the radial direction and rests radially outward on the end face 322 of the radially outer edge region 305.
- the cover element 321 is guided radially inwardly to the inside so far that it rests against the region 31 1 or at the flanges 314 articulated there, where the flanges 314 are connected to the flywheel 303.
- the cover 321 has an opening 123 which are aligned with the openings for riveting of flywheel 303 and the flanges 314, so that the cover 321 can be riveted together with the flanges 314 and the flywheel 303.
- the cover thus closes an inner volume 324 between the flywheel 303 and the cover 321.
- the centrifugal pendulum device 302 is arranged, which thereby protects against contamination.
- the cover member 321 is preferably formed as a potted or flat disk.
- the cover element can also be designed as a plastic element and, for example, adhesively bonded or positively connected.
- the cover element is preferably under bias on the outer edge region 5, 105, 205, 305, wherein it is held radially inward by riveting or screwing.
- the cover element can also rest axially on the toothed ring, which is supported by the radially outer edge region as a toothed ring carrier.
- the above-described respective flywheel is preferably a rigid flywheel or a rigid flywheel.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112015002771.8T DE112015002771A5 (en) | 2014-06-11 | 2015-06-03 | torsional vibration dampers |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014211155.2 | 2014-06-11 | ||
DE102014211155 | 2014-06-11 | ||
DE102014225737.9 | 2014-12-12 | ||
DE102014225737 | 2014-12-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015188821A1 true WO2015188821A1 (en) | 2015-12-17 |
Family
ID=53498750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2015/200341 WO2015188821A1 (en) | 2014-06-11 | 2015-06-03 | Torsional vibration damper |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112015002771A5 (en) |
WO (1) | WO2015188821A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3057326A1 (en) * | 2016-10-12 | 2018-04-13 | Valeo Embrayages | INERTIA WHEEL FOR VEHICLE TRANSMISSION SYSTEM |
FR3057931A1 (en) * | 2016-10-25 | 2018-04-27 | Valeo Embrayages | COUPLER TORQUE TRANSMISSION DEVICE FOR A MOTOR VEHICLE |
FR3060073A1 (en) * | 2016-12-08 | 2018-06-15 | Valeo Embrayages | FLYWHEEL FOR CLUTCH OF MOTOR VEHICLE, DOUBLE-FLYING DAMPER AND CLUTCH EQUIPPED WITH SUCH A WHEEL |
WO2022078541A1 (en) * | 2020-10-14 | 2022-04-21 | Schaeffler Technologies AG & Co. KG | Crankshaft assembly comprising a centered vibration damper |
DE102022108530A1 (en) | 2022-04-08 | 2023-10-12 | Schaeffler Technologies AG & Co. KG | Gearbox housing |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004039905A1 (en) * | 2003-08-28 | 2005-03-17 | Zf Friedrichshafen Ag | Vibration damping system has first and second damping devices and a deflection mass support movable along deflection path which causes radial position of mass to change relative to rotational axis |
DE102011104407A1 (en) * | 2010-06-29 | 2012-04-19 | Schaeffler Technologies Gmbh & Co. Kg | Vibration isolation device for use in drive train of motor vehicle, has flywheel, where rotary bearing of pendulum mass and radial centrifugal support are separated against each other at distance |
WO2014012736A1 (en) * | 2012-07-19 | 2014-01-23 | Zf Friedrichshafen Ag | Damper assembly |
EP2706260A2 (en) * | 2012-09-06 | 2014-03-12 | Schaeffler Technologies AG & Co. KG | Torque transmission device |
DE102012221949A1 (en) * | 2012-11-30 | 2014-06-05 | Schaeffler Technologies Gmbh & Co. Kg | Rotational torque transmission device for drive train of crankshaft of internal combustion engine in e.g. motor car, has holding and fastening unit formed such that centrifugal force pendulum part lies in recess formed in rotatable part |
-
2015
- 2015-06-03 WO PCT/DE2015/200341 patent/WO2015188821A1/en active Application Filing
- 2015-06-03 DE DE112015002771.8T patent/DE112015002771A5/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004039905A1 (en) * | 2003-08-28 | 2005-03-17 | Zf Friedrichshafen Ag | Vibration damping system has first and second damping devices and a deflection mass support movable along deflection path which causes radial position of mass to change relative to rotational axis |
DE102011104407A1 (en) * | 2010-06-29 | 2012-04-19 | Schaeffler Technologies Gmbh & Co. Kg | Vibration isolation device for use in drive train of motor vehicle, has flywheel, where rotary bearing of pendulum mass and radial centrifugal support are separated against each other at distance |
WO2014012736A1 (en) * | 2012-07-19 | 2014-01-23 | Zf Friedrichshafen Ag | Damper assembly |
EP2706260A2 (en) * | 2012-09-06 | 2014-03-12 | Schaeffler Technologies AG & Co. KG | Torque transmission device |
DE102012221949A1 (en) * | 2012-11-30 | 2014-06-05 | Schaeffler Technologies Gmbh & Co. Kg | Rotational torque transmission device for drive train of crankshaft of internal combustion engine in e.g. motor car, has holding and fastening unit formed such that centrifugal force pendulum part lies in recess formed in rotatable part |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3057326A1 (en) * | 2016-10-12 | 2018-04-13 | Valeo Embrayages | INERTIA WHEEL FOR VEHICLE TRANSMISSION SYSTEM |
FR3057931A1 (en) * | 2016-10-25 | 2018-04-27 | Valeo Embrayages | COUPLER TORQUE TRANSMISSION DEVICE FOR A MOTOR VEHICLE |
FR3060073A1 (en) * | 2016-12-08 | 2018-06-15 | Valeo Embrayages | FLYWHEEL FOR CLUTCH OF MOTOR VEHICLE, DOUBLE-FLYING DAMPER AND CLUTCH EQUIPPED WITH SUCH A WHEEL |
WO2022078541A1 (en) * | 2020-10-14 | 2022-04-21 | Schaeffler Technologies AG & Co. KG | Crankshaft assembly comprising a centered vibration damper |
US12018731B2 (en) | 2020-10-14 | 2024-06-25 | Schaeffler Technologies AG & Co. KG | Crankshaft assembly comprising a centered vibration damper |
DE102022108530A1 (en) | 2022-04-08 | 2023-10-12 | Schaeffler Technologies AG & Co. KG | Gearbox housing |
Also Published As
Publication number | Publication date |
---|---|
DE112015002771A5 (en) | 2017-03-09 |
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