WO2017101929A1 - Centrifugal pendulum - Google Patents
Centrifugal pendulum Download PDFInfo
- Publication number
- WO2017101929A1 WO2017101929A1 PCT/DE2016/200551 DE2016200551W WO2017101929A1 WO 2017101929 A1 WO2017101929 A1 WO 2017101929A1 DE 2016200551 W DE2016200551 W DE 2016200551W WO 2017101929 A1 WO2017101929 A1 WO 2017101929A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pendulum
- masses
- centrifugal
- pendulum masses
- helical compression
- 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 centrifugal pendulum with a rotatably mounted about a rotation axis arranged Pendelmassentrager and circumferentially distributed arranged on the pendulum mass carrier by means of a pendulum track pendulum bearings recorded pendulum masses, wherein between each two circumferentially adjacent pendulum masses each end face a helical compression spring is arranged.
- Centrifugal pendulum are sufficiently known from drive trains of motor vehicles.
- a pendulum mass carrier is rotatably received about an axis of rotation, for example, a crankshaft of an internal combustion engine, a transmission input shaft of a transmission or the like.
- Pendulum masses distributed over the circumference are arranged on the pendulum mass carrier and suspended in a plane perpendicular to the axis of rotation relative to the pendulum mass carrier. Due to this pendulum suspension, the pendulum masses in the centrifugal force field of the rotating pendulum mass carrier form a speed-adaptive torsional vibration damper, in that the pendulum masses withdraw energy from the drivetrain during torque peaks due to appropriate deflection and feed it at torque minima.
- the pendulum masses can be distributed axially between two side parts, which form the pendulum mass carrier, over the circumference, these pendulum masses being held by means of spherical bearings in the centrifugal force field of the rotating pendulum mass carrier on a predetermined pendulum track.
- the pendulum masses are strongly deflected or displaced radially inward, so that impact noises can occur.
- a centrifugal pendulum mass with a pendulum mass carrier formed from a central flange part with pendulum masses arranged on both sides, in which a helical compression spring is arranged in the circumferential direction between circumferentially adjacent pendulum masses.
- a centrifugal pendulum known in which between two circumferentially adjacent, arranged between two pendulum mass carrier disc parts forming pendulum masses a helical compression spring is arranged.
- Such helical compression springs space the adjacent pendulum masses elastically from each other, so that a striking of the pendulum masses is reduced or even prevented.
- the helical compression springs are accelerated radially under the influence of centrifugal force, so that they buckle radially and can come to rest against the pendulum masses, so that noises are generated and the helical compression springs can be damaged.
- the object of the invention is the advantageous development of a generic centrifugal pendulum.
- object of the invention a buckling of the
- the object of the invention to propose a simple and easy to install centrifugal pendulum.
- the object is solved by the subject matter of claim 1.
- the dependent claims give advantageous embodiments of the subject matter of claim 1 again.
- the proposed centrifugal pendulum is provided in particular for a drive train of a motor vehicle with a torsionally vibrating engine.
- the centrifugal pendulum pendulum contains a pendulum mass carrier, which is formed from two disc parts or as a pendulum flange and which is rotatable about an axis of rotation.
- the pendulum mass carrier can be arranged, for example, on a single-mass flywheel, a primary or secondary part of a dual-mass flywheel, on a clutch disc, in or outside a hydrodynamic torque converter or the like.
- the pendulum mass carrier receives distributed over the circumference pendulum masses that are included between the two disc parts or both sides of the pendulum.
- the pendulum masses are held on the disc parts or on the pendulum flange by means of self-aligning bearings in the centrifugal force field of the rotating pendulum mass carrier on a given pendulum track.
- the pendulum masses are suspended eccentrically to the axis of rotation pendulum by the pendulum bearing on the pendulum mass carrier and take under centrifugal force their working position, which is detuned by the torsional vibrations while absorbing energy, so that a redeeming effect occurs.
- the pendulum bearings are in this case formed of complementary trained raceways in the disc parts or the pendulum and in the pendulum masses, on each of which a rolling element, for example, rolls a spherical roller.
- the pendulum bearings form a predetermined pendulum motion, the circular arc or formed in almost any arbitrary shape, for example against the circular arc shape so detuned, for example, may be provided at the end with a reduced radius that Impact of pendulum masses at the maximum swing angles are unlikely.
- the self-aligning bearings are represented, for example, by means of recesses in the disk parts or in the pendulum flange and in the pendulum masses, correspondingly formed raceways being provided on the recesses on which the raceways overlap rolling elements such as spherical rollers or the like.
- the raceways can depict a monofilar suspension of the pendulum masses in the sense of a pendulum of a pendulum, but it has proved advantageous to image a bifilar suspension of the pendulum masses by means of two pendulum bearings spaced apart in the circumferential direction.
- a pendulum movement corresponding to a parallel arrangement of the pendulum threads can be provided.
- a pendulum guide corresponding to a trapezoidal arrangement of the pendulum threads is proposed, in which the pendulum masses additionally perform a self-rotation during the pendulum movement, so that an additional mass inertia and thus an improved insulation effect can be provided.
- each helical compression springs are arranged on the front side, which prevent contact of the end faces in the circumferential direction of adjacent pendulum masses at high angles of oscillation of the pendulum masses.
- In order to prevent buckling of the helical compression springs at high speeds and thus high centrifugal force and circumferentially spaced pendulum masses at low angles of oscillation and thus to prevent noise and the helical compression damaging contacts with the pendulum masses without substantially hindering the movement of the pendulum masses are respectively in the Front ends of the pendulum mass recesses provided in which the end portions of the helical compression springs receiving plastic cages losiersi- are attributed to them.
- the Kunststoffkafige prevent direct contact of the helical compression springs with the pendulum masses and thereby prevent noise and damage to the helical compression springs.
- the plastic cages have cylindrical, blind-hole-like, in the recesses dipping openings in which the end portions of the helical compression springs are accommodated.
- the plastic cages may have abutting areas on the end faces of the pendulum masses.
- centrifugal pendulum pendulum mass carrier is designed as a pendulum, at the pendulum masses are arranged on both sides, wherein axially opposite pendulum masses are connected by means of recesses of the pendulum flange thorough connecting means to pendulum mass units, said between two circumferentially adjacent pendulum masses arranged helical compression springs at least at one Side of the pendulum are arranged.
- centrifugal pendulum pendulum mass carrier of two disc parts with a receiving area on which the two disc parts are axially spaced apart, formed, wherein the pendulum masses are received in the receiving area.
- the plastic cages can be extended axially relative to the pendulum masses and the pendulum flange or the side parts axially spaced from the pendulum masses the.
- the plastic cages can be extended axially on one side in the direction of the pendulum flange so that the axially opposite pendulum masses of a pendulum mass unit are positioned centrally on the pendulum flange.
- the plastic cages can be axially extended on both sides, so that the pendulum masses are positioned centrally between the two disc parts.
- the pendulum masses may for example be formed from a plurality of layered metal sheets, wherein at least one arranged between the outer metal discs sheet metal disc has a return, that is opposite the other metal discs at least in the region of the end faces of the pendulum masses a smaller circumference or recesses, so that in this recess immerse the plastic cage by means of a nose and may optionally form a Klips- or locking connection.
- the nose can be pressed or clamped in the recess and thus the plastic cage can be frictionally connected to the pendulum mass.
- Figure 1 is a partial view of a pendulum mass of a centrifugal pendulum with a
- the pendulum mass 1 shows the pendulum mass 1 in view.
- the general structure of a centrifugal pendulum can be found in the cited prior art.
- the pendulum mass 1 represents one of the distributed over the same trained pendulum masses of a centrifugal pendulum.
- the pendulum mass 1 has at its peripheral end faces 2 recesses 3, in which plastic cages 4 are secured against loss on both sides.
- the plastic cages 4 have a cylindrical, blind hole-like opening 5, in which the end regions 7 of the helical compression springs 6 are introduced. In this way, a buckling of the helical compression springs 6 is prevented radially outward with a touch of the pendulum masses 1.
- adjacent pendulum masses are arranged with the same plastic cages.
- the plastic cages 4 have opposite the openings 5 extended, applied to the end faces 2 contact areas 8, which also serve as a stop buffer of the pendulum masses 1 against each other with complete compression of the helical compression springs 6.
- the pendulum mass 1 is formed of three layered metal discs, which are riveted together by means of the rivets 9.
- the circumferentially spaced provided in the pendulum mass 1 recesses 15 each take the rolling elements 16, such as a spherical roller, on the raceway 18 and in recesses of the two pendulum mass 1 axially surrounding disc tracks provided to form a self-aligning bearing 17 rolls.
- the pendulum mass 1 in section through the plastic cage 4 with the opening 5, which receives the helical compression spring 6.
- the middle sheet metal disk 10 is provided with the recess 13 with respect to the outer metal disks 1 1, 12.
- the plastic cage in the pendulum mass 1 has the nose 14, which dips into the recess 13 and can be locked, clipped, pressed or otherwise frictionally or positively connected for fastening the plastic cage 4 thereto ,
- the plastic cage 4 axially relative to the pendulum mass 1, for example, by 0.5mm to 1 mm, preferably by 0.8mm per side extended extensions 19, so that originally existing plastic spacers can be omitted on the disc parts or on the pendulum mass.
- the rolling elements 16 are extended axially relative to the extensions 19 and engage in recesses of the not shown, the pendulum mass 1 flanking disc parts and form on to the raceways 18 (Figure 1) of the pendulum mass 1 complementary trained Laufbah- NEN a rolling contact.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
- Rolling Contact Bearings (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680069677.8A CN108368912B (en) | 2015-12-17 | 2016-11-25 | Centrifugal force pendulum |
DE112016005785.7T DE112016005785A5 (en) | 2015-12-17 | 2016-11-25 | centrifugal pendulum |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015225621.9A DE102015225621A1 (en) | 2015-12-17 | 2015-12-17 | centrifugal pendulum |
DE102015225621.9 | 2015-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017101929A1 true WO2017101929A1 (en) | 2017-06-22 |
Family
ID=57708252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2016/200551 WO2017101929A1 (en) | 2015-12-17 | 2016-11-25 | Centrifugal pendulum |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN108368912B (en) |
DE (2) | DE102015225621A1 (en) |
WO (1) | WO2017101929A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020107701B4 (en) | 2020-03-20 | 2022-06-30 | Schaeffler Technologies AG & Co. KG | Process for the manufacture of pendulum masses for a centrifugal pendulum |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014082629A1 (en) | 2012-11-30 | 2014-06-05 | Schaeffler Technologies AG & Co. KG | Torque transmission device and drive train with torque transmission device |
DE102014216540A1 (en) * | 2013-09-16 | 2015-03-19 | Schaeffler Technologies AG & Co. KG | Centrifugal pendulum device with compression springs |
WO2015144169A1 (en) | 2014-03-27 | 2015-10-01 | Schaeffler Technologies AG & Co. KG | Centrifugal force pendulum comprising a spring arrangement |
WO2015149802A1 (en) * | 2014-04-01 | 2015-10-08 | Schaeffler Technologies AG & Co. KG | Centrifugal pendulum device with a protective device |
WO2015149789A1 (en) | 2014-03-31 | 2015-10-08 | Schaeffler Technologies AG & Co. KG | Centrifugal force pendulum device having a guide element |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10209409A1 (en) * | 2001-03-08 | 2002-09-12 | Luk Lamellen & Kupplungsbau | Torsional vibration damper esp. divided flywheel has helical pressure spring with windings in one section having smaller outer diameter than windings outside this section |
EP1865222A1 (en) * | 2006-06-10 | 2007-12-12 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Pendulum device operating with centrifugal force |
DE102012204222A1 (en) * | 2011-03-31 | 2012-10-04 | Schaeffler Technologies AG & Co. KG | Centrifugal pendulum device |
-
2015
- 2015-12-17 DE DE102015225621.9A patent/DE102015225621A1/en not_active Withdrawn
-
2016
- 2016-11-25 WO PCT/DE2016/200551 patent/WO2017101929A1/en active Application Filing
- 2016-11-25 CN CN201680069677.8A patent/CN108368912B/en active Active
- 2016-11-25 DE DE112016005785.7T patent/DE112016005785A5/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014082629A1 (en) | 2012-11-30 | 2014-06-05 | Schaeffler Technologies AG & Co. KG | Torque transmission device and drive train with torque transmission device |
DE102014216540A1 (en) * | 2013-09-16 | 2015-03-19 | Schaeffler Technologies AG & Co. KG | Centrifugal pendulum device with compression springs |
WO2015144169A1 (en) | 2014-03-27 | 2015-10-01 | Schaeffler Technologies AG & Co. KG | Centrifugal force pendulum comprising a spring arrangement |
WO2015149789A1 (en) | 2014-03-31 | 2015-10-08 | Schaeffler Technologies AG & Co. KG | Centrifugal force pendulum device having a guide element |
WO2015149802A1 (en) * | 2014-04-01 | 2015-10-08 | Schaeffler Technologies AG & Co. KG | Centrifugal pendulum device with a protective device |
Also Published As
Publication number | Publication date |
---|---|
DE102015225621A1 (en) | 2017-06-22 |
CN108368912B (en) | 2020-11-27 |
CN108368912A (en) | 2018-08-03 |
DE112016005785A5 (en) | 2018-09-06 |
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