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 pendulum mass carrier rotatably arranged about an axis of rotation, on which pendulum masses distributed on both sides over the circumference in the centrifugal force field of the pendulum mass carrier rotating about the axis of rotation by means of self-aligning bearings between end positions are pendulum supported, with axially opposite pendulum masses being supported by the pendulum masses Connection means are each connected to a pendulum mass unit and the pendulum mass units are supported radially inward.
• Generic centrifugal pendulums are used individually or in combination with torsional vibration dampers for torsional vibration isolation in drive trains with internal combustion engines subject to torsional vibrations.
• Flierzu are pendulum masses on a pendulum mass carrier by means of self-aligning bearings
• the self-aligning bearings are formed from tracks provided on the pendulum masses and on the pendulum flange and a pendulum roller rolling on these. This he enables a radial support of the pendulum masses in the centrifugal force field.
• the self-aligning bearings are not radially fixed, so that the self-aligning rollers can lift off the raceways when torque peaks are entered, for example during start-stop processes of the internal combustion engine or there is insufficient centrifugal force, and contact noises arise when there is renewed contact.
• the object of the invention is to develop a generic Fliehkraftpen dels.
• the object of the invention is to propose a centrifugal pendulum in which a contactless regular operation and a support when the pendulum is lifted roll is possible with simple means.
• the proposed centrifugal pendulum contains a pendulum mass carrier which is arranged to be rotatable about an axis of rotation.
• the pendulum mass carrier can be designed as a disk-shaped pendulum flange and driven directly by a crankshaft of an internal combustion engine or preferably integrated into a torsional vibration damper on the output side.
• the centrifugal pendulum can be part of a flywheel such as a single or dual mass flywheel, a torsional vibration damper, a clutch disc or a hydrodynamic torque converter.
• the pendulum mass carrier can be provided for additional functions, for example as a flange part for loading a spring device on the output side, as an output hub or the like of a torsional vibration damper.
• Pendulum masses are distributed on the pendulum mass carrier on both sides over the circumference, for example in two, three, four or six divisions, and are pendulum-supported in the centrifugal force field of the pendulum mass carrier rotating around the axis of rotation by means of self-aligning bearings between end positions. Axially opposite pendulum masses are more penetrating by means of the pendulum mass carrier Connection means connected to each pendulum mass unit.
• the pendulum mass sen and the pendulum mass carrier contain mutually complementary, a pendulum path of the pendulum mass units predetermined, worked on recesses raceways, a pendulum roller overlaps the axially opposite recesses so that the pendulum mass units are supported by means of this on the pendulum mass carrier against the centrifugal force and dependent on the Shape of the tracks can run the given aerial tramway between limit positions in the circumferential direction.
• two pendulum mass units spaced apart in the circumferential direction, the center of gravity of the pendulum mass unit including pendulum bearings are provided.
• free swing tracks or swing tracks of a suspended on swing threads Fadenpen dels corresponding swing tracks with parallel pendulum referred to as parallel or trapezoidal pendulum designated trapezoidal arrangement of the pendulum threads be vorgese hen.
• the pendulum masses or pendulum mass units are supported radially inward to prevent the play of the pendulum rollers within the recesses, for example if the centrifugal force is too low to reduce torque peaks and the like entered in the centrifugal pendulum and thereby avoid or at least minimize contact noise when the pendulum rollers come into contact with the raceways, the end position limits of the raceways or the pendulum masses Contact of the pendulum rollers to the raceways, non-contact and thus uninterrupted pendulum operation with simple means is proposed.
• the at least one plastic ring can be produced, for example, by means of an injection molding process, 3D printing process or the like.
• one support can each be arranged in an area of an end position of a pendulum mass.
• the at least one plastic ring part can be provided on one side of the Pendelmas senarmes with axially expanded support cams on one side and fastening cams on the other side for fastening the plastic ring part to the pendulum mass carrier.
• a single plastic ring part may be sufficient, which supports only one side of the pendulum masses, whereby the entire pendulum mass unit is supported as a result of the connection with the axially opposite pendulum mass.
• a plastic ring part can be provided on both sides so that the pendulum masses on both sides of the pendulum mass carrier are supported radially inward and a complete support geometry can be provided.
• the fastening cams can engage in separate openings in the pendulum mass carrier.
• the fastening cams of the plastic ring parts can each interlock in a complementary manner within an opening and form a common support ring.
• a single plastic ring part can be accommodated on an inner circumference of the central opening of the pendulum mass carrier, axially at least on one side, for example completely circumferentially on each side or over the circumference on both Pages alternately extended support cams to form the support tongues and radially outside fastening cams for fastening the plastic ring part to the pendulum mass carrier are provided.
• the support cams formed from plastic can serve directly as stops for the pendulum masses.
• rings made of elastic material for example rubber rings, are held captive on the support cams.
• the cams - from support cams and / or the fastening cams - can be designed to be elastic with regard to their diameter. This means that they can be compressed and expand again under tension after the rings or the plastic ring part have been assembled.
• the cams can be slotted out forms. A diameter of the slotted support cams can be greater than a diameter of the rings, so that the rings are threaded on when the support cams are pressed together and are then held captive against the widening support cams while they are pretensioned.
• the cams can have expansions at their free end relative to their remaining diameter.
• the rings can be pushed over the extensions after they have been pressed together, the extensions such as After releasing the plate, form an undercut so that the rings are positively received on the support cams.
• the plastic ring part can be latched to the pendulum mass carrier by means of the fastening cams.
• the fastening cams can have extensions at their free end in the form of an elastic plate which, after the fastening cams are pressed together, passes through an opening in the pendulum mass carrier and in its end position engages over the opening.
• the fastenings can optionally be pressed into the opening with elastic deformation of a plate attached at the end.
• Figure 1 is a centrifugal pendulum with a support containing plastic ring part in view
• Figure 2 shows a section through the centrifugal pendulum of Figure 1 along the section line A-A and
• Figure 3 shows a section through the centrifugal pendulum of Figure 1 along the section line B-B.
• FIG. 1 shows the centrifugal pendulum 1 with the ordered, annular disk-shaped pendulum mass carrier 2 rotatable about the axis of rotation d in a view.
• the pendulum masses 3 are arranged on both sides of the pendulum mass carrier 2, a front one of the pendulum masses 3 being removed for the sake of clarity.
• the axially opposite pendulum masses 3 are each connected to each other by means of the recesses 4 of the pendulum mass carrier 2 penetrating connecting means 5 to form pendulum masses units 6, for example riveted.
• the pendulum mass units 6 are each suspended in a pendulum fashion by means of two pendulum bearings 7 spaced around the center of gravity S of the pendulum mass units 6 in the circumferential direction, so that they can pendulum along a predetermined pendulum path in the centrifugal force field of the pendulum mass carrier 2 rotating about the axis of rotation d between two end positions. If torsional vibrations are present, the oscillation angles and thus the radius of the pendulum mass units 6 to the axis of rotation d change, so that they absorb and release potential energy and thus cancel the torsional vibrations depending on centrifugal force and thus adapting to the speed.
• the self-aligning bearings 7 contain in the pendulum masses 3 and in the pendulum mass carrier 2 recesses 8 with raceways, each of which a pendulum roller 9 passes through the Ausnaturalun gene 8 and rolls on the raceways.
• the pendulum mass units 6 are supported radially outward on the pendulum mass carrier 2 by means of the pendulum rollers 9 when there is sufficient centrifugal force.
• the pendulum mass carrier 2 is arranged supports 10 are provided at the end positions of the pendulum mass units 6. For the number of pendulum mass units here four and the two end positions per pendulum mass unit 6, eight supports 10 are provided from.
• the supports 10 are provided in one piece as axially expanded support cams 11 on the plastic ring part 12, which axially counteracts the support cams 11. overlying here three fastening cams 13 is fastened to the pendulum mass carrier 2 be.
• the support cams 11 each contain a ring 14 made, for example, of rubber, rubber, elastic plastics or similar material, which is securely drawn onto the support cams 11 at a minimal distance from the Pen delmassen 3 in the corresponding end position and on the corresponding side of the pendulum mass carrier 2 .
• the minimum distance is set in such a way that with a regular vibration behavior of the pendulum mass units 6 with pendulum rollers 9 that do not lift off the raceways, contact with the pendulum masses 3 is avoided, and the pendulum mass units 6 when the pendulum rollers 9 lift by means of contact of the pendulum masses 3 on the rings 14 can be supported elastically and with little noise.
• a single plastic ring part 12 is received on only one side of the pendulum mass carrier 2.
• a further plastic ring part for example designed as an identical part with the plastic ring part 12, can be attached to the other side of the pendulum mass carrier 2 in order to ensure, for example, a completely symmetrical stop of the pendulum mass units 6.
• FIG. 2 shows a schematic, not true-to-scale sectional view of the centrifugal pendulum 1 of FIG. 1, which is arranged around the axis of rotation d, along the cutting line AA.
• the support cams 11 are designed to be elastic with regard to their diameter in that they are slotted, as shown here, so that they can be compressed and can accommodate the ring 14 in an elastically pretensioned manner.
• the elastic ring 14 is captively and axially open by means of the stop 15 and the plate 16 forming an undercut for this the position of the pendulum mass 3 to be supported (FIG. 1) is set on the respective support cam 11 and is pulled up.
• FIG. 3 shows a schematic sectional illustration, not true to scale, of the centrifugal pendulum 1 of FIG. 1 along the section line BB.
• the plastic ring part 12 is latched onto the pendulum mass carrier 2 by means of the three fastening cams 13 here, only one of which can be seen in the sectional view.
• the fastening cams 13, which are elastic with respect to their diameter, are for example slotted here, are pressed into the openings 17 of the pendulum mass carrier 2 and, by means of the plate 18 arranged at the end, form an undercut with them to axially secure the plastic ring part 12 to the pendulum mass carrier 2.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Acoustics & Sound (AREA)
• Aviation & Aerospace Engineering (AREA)
• Mechanical Engineering (AREA)
• One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
• Rolling Contact Bearings (AREA)
• Vibration Dampers (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=75786871

Family Applications (1)

Country Status (4)

Family Cites Families (10)

• 2021
  • 2021-04-15 EP EP21723121.6A patent/EP4150230A1/de not_active Withdrawn
  • 2021-04-15 CN CN202180033569.6A patent/CN115552146A/zh active Pending
  • 2021-04-15 DE DE102021109421.6A patent/DE102021109421A1/de active Pending
  • 2021-04-15 WO PCT/DE2021/100344 patent/WO2021228307A1/de unknown

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