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
  • F16F15/16—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material
  • F16F15/165—Sealing arrangements
• • 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
  • F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
  • F16F15/131—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses
  • F16F15/139—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses characterised by friction-damping means
• • 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
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D13/00—Friction clutches
  • F16D13/58—Details
  • F16D13/70—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members
  • F16D2013/703—Pressure members, e.g. pressure plates, for clutch-plates or lamellae; Guiding arrangements for pressure members the pressure plate on the flywheel side is combined with a damper

Definitions

• the invention relates to a dual-mass flywheel having a rotatable about an axis input part with a primary flywheel and a limited compared to this against the action of housed in an annular chamber of the input part spring device rotatable output part with a secondary flywheel and connected to the secondary flywheel by means of arranged on a pitch rivets, the Spring device acting on flange.
• Dual-mass flywheels serve as torsional vibration dampers of the vibration isolation, in particular in drive trains of motor vehicles with a torsionally vibrating internal combustion engine.
• dual-mass flywheels have two inertia masses rotatably mounted against the action of a spring device, a primary flywheel being fixedly bolted to a crankshaft of the internal combustion engine and a secondary flywheel forming a counter-pressure plate for a friction clutch.
• the spring device for example distributed over the circumference arranged bow springs, is acted upon by disk parts of the primary flywheel and riveted by a secondary flywheel flange.
• the spring device is received in an annular chamber formed by disk parts of the primary flywheel which is designed to be open radially downwards, so that the flange part can engage from radially inside into the annular chamber and act upon the spring device.
• a sealing membrane is mounted between the flange and the secondary flywheel, which is applied under axial bias to a disc part of the primary flywheel, so that despite the relative rotation of the rotating masses occurring a seal of the annular chamber is made possible. Radially inside, the bearing between the flywheels seals the annular chamber.
• a dual mass flywheel is known in which the storage of the centrifugal masses is provided by means of a bearing radially within arranged on a pitch circle first openings for fastening the dual mass flywheel by means of screws between the primary flywheel and the crankshaft.
• second openings which are aligned with the first openings, through which the annular chamber can be contaminated, are provided on the secondary flywheel.
• the object of the invention is the development of a dual-mass flywheel with an at least almost watertight sealed annular chamber.
• the proposed dual-mass flywheel is rotatable about an axis of rotation and fixed to a drive part such as a crankshaft of an internal combustion engine.
• the input part of the dual mass flywheel is provided with mounting holes and screws, by means of which the dual mass flywheel is preferably screwed centered to the drive part.
• the input part is preferably made of formed sheet metal parts, which at the same time form, for example by means of a starter ring gear a primary flywheel.
• a spring device which is formed for example from distributed over the circumference bow springs, added.
• an output part Opposite the input part against the action of the spring means, an output part is arranged. Input part and output part are mounted on each other by means of a radially arranged within the mounting hole bearing.
• a bearing flange for receiving the bearing can be provided integrally on the input part in one piece or, for example, by means of the screw connection in two parts connected to the drive part.
• the input-side loading of the spring device in the circumferential direction by means of loading means of the input part, preferably by means of indentations on the disc part and the cover part.
• the output-side loading of the spring device in the circumferential direction by means of a flange, which engages by means of arms from radially inward into the annular chamber.
• the flange is connected by means of arranged on a pitch circle rivets with a secondary flywheel.
• the secondary flywheel may form a reaction plate for a friction clutch or the like.
• a sealing membrane Radially outside the pitch circle can be provided between the output part and the input part axially between the flange and the secondary flywheel mass a sealing membrane, the annular chamber in this area between the pitch circle and the cover part can seal.
• a relative rotation between the output part and the cover part is provided by means of a dynamic friction contact.
• a friction ring can be provided on the sealing membrane or on the cover part, on which a friction surface of the cover part or the sealing membrane slides.
• the annular chamber In order to seal the annular chamber radially within the pitch circle and thereby allow for example in off-road vehicles water passages without risking water penetration into the annular chamber and thus to prevent the washing out of the grease in the case of a greased spring means, the annular chamber is radially within the pitch circle by means of a sealed between the input part and the output part provided dynamic friction contact.
• this may be provided on fasteners and screws for receiving the dual-mass flywheel on a drive part, a cover plate, which provides the input-side sealing.
• the dynamic frictional contact between the cover plate and the output part can be formed.
• the friction ring may be arranged on an inner circumference of the flange part. The friction ring is biased under radial bias against a circumferential annular surface of an axial extension of the cover plate, so that a radial frictional contact between input part and output part is formed, in addition to the output member against the action of the spring means upon rotation of the input part as a friction device to provide a Reibhysterese can serve.
• the friction ring may be arranged on the cover disk, wherein the friction surface is provided on a component of the output part and is biased in a radial or preferably axial direction against the friction ring.
• the friction surface may be biased against the friction ring recorded on the rivets between the flange and the secondary flywheel sealing membrane.
• the sealing membrane may be formed such that it is biased radially within the pitch circle and radially outside of the pitch circle in each case against the input part preferably axially to form dynamic friction contacts and to seal the annular chamber.
• a sealing membrane attached to the input part and sealing relative to the output part can be provided.
• a sealing membrane can, for example, at fastening openings of the input part by means of Screws for receiving the dual-mass flywheel to be received on a drive part such as crankshaft and preferably be biased axially against a recorded on the flange friction ring.
• the sealing membrane can be arranged axially between the input part and a cover disk.
• the recording of a friction ring is in each case rotationally fixed to a component such as flange, cover part, cover plate and the like, for example by means of a latching positive connection and the like. Furthermore, the friction ring can be molded onto the corresponding component.
• the friction ring may be made of plastic such as an elastomer, thermoplastic or thermosetting plastic.
• the plastic may be reinforced with fibers, powders, spheres or the like of glass, carbon or the like.
• FIG. 1 shows a partial section through a dual-mass flywheel with a completely peeled annular chamber
• FIG 3 shows a partial section through a dual mass flywheel with respect to the dual mass flywheels of Figures 1 and 2 modified seal.
• the output part 12 is rotatably received by means of the bearing 1 1.
• the output part 12 includes the flange part 13 and serving as a counter-pressure plate for a friction clutch secondary flywheel 14th
• the spring device 15 is effectively arranged in the circumferential direction, which temporarily stores energy at a rotational vibration-related relative rotation of input part 2 and output part 12, and releases it again, so that an attenuation of the torsional moment with respect to the two-mass flywheel 1 is achieved.
• the input part 2 acts on the end faces of the bow springs 16 of the spring device 15 by means of non-visible indentations in the disk part 6 and in the cover part 8 in the circumferential direction.
• the output-side loading of the bow springs 16 takes place by means of radially expanded arms of the flange part 13 which engage radially from the inside into the annular chamber 9.
• the flange 13 is connected to the secondary flywheel 14 by means of rivets 18 arranged over the circumference on the pitch circle 17.
• the openings 19 are provided in the disk part 6, which are closed after riveting by means of the caps 20.
• the annular chamber is sealed radially outside and radially within the pitch circle 17 between input part 2 and output part 12 by means of dynamic friction contacts 22, 23 .
• the sealing membrane 24 is received axially between the flange 13 and the secondary flywheel 14 by means of the rivets 18.
• the sealing membrane 24 has the friction ring 25, which is biased by the sealing membrane 24 axially against the friction surface 26 as the sealing surface of the cover part 8.
• the dynamic friction contact 23 is provided. In the illustrated embodiment, this is formed from the cover plate 27 and the friction ring 28.
• the friction ring 28 is applied to the inner circumference of the flange 13 with the interposition of the tolerance ring 29 and forms with the friction surface 30 of the axial extension 31 of the cover plate 27, the radially biased dynamic friction contact 23.
• the cover plate 27 is connected by means of screws 5 with the input part. The formation of the dynamic friction contact 23 creates a further friction device.
• FIG. 1 shows the rotatable about the axis of rotation d two-mass flywheel 1 a with modified dynamic friction contact 23a in partial section.
• the sealing membrane 34a is arranged axially between the disk part 6a of the input part 2a and the cover disk 27a.
• the inner circumference of the flange part 13a receives the friction ring 28a against rotation on the projections 35a.
• the sealing membrane 34a is axially biased axially by means of the friction surface 30a against the friction ring 28a and forms the seal of the annular chamber 9a and a friction device.
• Figure 3 shows the rotatable about the axis of rotation d two-mass flywheel 1b with modified dynamic friction contact 23b in partial section.
• the sealing and the formation of a friction device between the input part 2b and the secondary flywheel 14b of the output part 12b is formed by the sealing membrane 24b arranged radially inwardly between the output part 12b and the flange part 13b and extended with respect to the sealing membrane 24 of FIG.
• the friction surface 30b is biased axially against the friction ring 28b.
• the friction ring 28b is mounted on the axial extension 31b of the cover plate 27b received by the input part 2b at the attachment openings 4b by means of the screws 5b.

Landscapes

• 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)
• Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=53276694

Family Applications (1)

Country Status (4)

Cited By (9)

Citations (8)

• 2015
  • 2015-04-16 DE DE112015002271.6T patent/DE112015002271A5/de not_active Ceased
  • 2015-04-16 MX MX2016012089A patent/MX2016012089A/es unknown
  • 2015-04-16 BR BR112016021545-1A patent/BR112016021545B1/pt active IP Right Grant
  • 2015-04-16 WO PCT/DE2015/200265 patent/WO2015172780A1/de active Application Filing

Patent Citations (8)

Also Published As

Similar Documents

Legal Events