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EP1488133A1 - Palier de groupes commutable a amortissement hydraulique - Google Patents

Palier de groupes commutable a amortissement hydraulique

Info

Publication number
EP1488133A1
EP1488133A1 EP03744715A EP03744715A EP1488133A1 EP 1488133 A1 EP1488133 A1 EP 1488133A1 EP 03744715 A EP03744715 A EP 03744715A EP 03744715 A EP03744715 A EP 03744715A EP 1488133 A1 EP1488133 A1 EP 1488133A1
Authority
EP
European Patent Office
Prior art keywords
shut
chamber
unit bearing
damping channel
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03744715A
Other languages
German (de)
English (en)
Inventor
Tillmann Freudenberg
Erhard Moog
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP1488133A1 publication Critical patent/EP1488133A1/fr
Withdrawn legal-status Critical Current

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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/26—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions

Definitions

  • the invention relates to a switchable unit bearing with hydraulic damping, in particular for mounting drive and / or transmission units in motor vehicles, comprising at least one working chamber and an equalizing chamber, which are separated from one another by a partition, but are hydraulically connected to one another via a damping channel, and at least one Another damping channel, which can be closed by sealingly placing a shut-off body which can be displaced along an adjustment path on an associated seat.
  • An agate gate bearing of the type mentioned is known, for example, from DE 198 61 063 C2.
  • the known aggregate warehouse has a work space and an equalization space, a partition being arranged between the work space and the equalization space.
  • the known aggregate bearing comprises a damping channel between the working space and the compensation space for damping low-frequency, large-amplitude vibrations and a membrane which can be moved back and forth in a recess in the direction of the vibrations introduced to isolate high-frequency, small-amplitude vibrations.
  • the known aggregate bearing has an opening arranged centrally within the partition, which can be closed by tightly fitting a shut-off element which can be moved axially in the bearing onto a seat in the partition assigned to it.
  • the partition is made in two parts in the axial direction and forms a nozzle cage, the above-mentioned membrane made of elastomeric material being arranged within the nozzle cage, which is circular and has a central recess corresponding to the opening.
  • the sealing body For the eradication of vibrations when a connected internal combustion engine is idling, the sealing body is removed from the opening by moving it axially downward, so that the liquid column within the opening can move out of phase with the vibrations introduced due to idling. This creates an absorber effect.
  • the opening is closed by the sealing body and the bearing according to the invention functions in this operating state like well-known hydraulically damping bearings, in which the membrane is loosely moved back and forth within the partition wall to isolate higher-frequency, small-amplitude, motor-excited vibrations is.
  • the damping fluid within the damping channel swings back and forth out of phase.
  • a disadvantage of the known aggregate bearing is that the area available for the loose membrane is greatly reduced by the central opening. This has a disadvantageous effect on the damping of the small-amplitude, high-frequency acoustic vibrations. Furthermore, the sealing body in the central opening must be able to withstand the possibly increased pressure in the work space or be movable against this pressure, for which purpose larger adjustment forces are required. Another disadvantage is the complex structure of the well-known assembly warehouse and its large dimensions.
  • the object of the invention is to further develop an assembly bearing of the known type in such a way that it has a simpler structure, requires less installation space and, moreover, requires less adjusting forces for the idling circuit. This object is achieved with an aggregate bearing with all the features of claim 1.
  • Advantageous embodiments of the invention are described in the subclaims.
  • the present invention takes advantage of the symmetry of an aggregate bearing with respect to its longitudinal axis in a simple manner.
  • a switchable unit bearing with hydraulic damping in particular for mounting drive and / or transmission units in motor vehicles, comprising at least one working chamber and one compensation chamber, which are separated from one another by a partition, but are hydraulically connected to one another via a damping channel, and at least one further damping channel, which is due to the tight placement of a Shut-off body displaceable along an adjustment path can be closed on an assigned seat
  • the further damping channel is designed and arranged with respect to the axis of symmetry of the bearing in such a way that the forces acting on the shut-off body by the hydraulic fluid cancel each other out.
  • the damping channel designed in a simple manner as a radial opening in the manner of an annular gap between the working chamber and the compensation chamber, with a passage opening pointing in the radial direction with respect to the axis of symmetry to a connecting chamber designed in the manner of an annular gap towards the compensation chamber.
  • the shut-off body is formed by a sealing ring that can be moved back and forth between an opening and a closing position along an adjustment path that is arranged on this through-opening and runs perpendicular to the flow direction, ie parallel to the bearing axis.
  • connection chamber to the compensation chamber connects radially outward to the further damping channel.
  • the shut-off body or the sealing ring advantageously has a permanent magnetic material, and a device is provided for generating the corresponding switching magnetic fields.
  • the device for generating the magnetic fields is preferably an electromagnet.
  • the electromagnet is advantageously also annular, at least in segments, in correspondence with the sealing ring.
  • a particularly simple space-saving construction is obtained if the electromagnet is arranged in a chamber adjoining the connection chamber to the compensation chamber with the shut-off device.
  • the shut-off body or the sealing ring consist of a magnetic elastomer.
  • the density of elastomers is usually in the range of the density of the damping fluid, so that a further reduction in the adjusting forces of the shut-off body is achieved by this measure.
  • the space required is further minimized if the damping channel is at least partially arranged within the partition between the working and equalizing chambers.
  • the further damping channel is in particular dimensioned such that it is suitable for decoupling and eradicating low-frequency, high-amplitude vibrations of a drive unit when idling.
  • the switchable unit bearing according to the invention has, in addition to the first and the further damping channel, a further decoupling device known per se for absorbing and damping high-frequency, small-amplitude, acoustic vibrations, the switchable unit bearing according to the invention combines all the advantages of a known idle switch bearing but in contrast to the known designs by a simple structure, a compact design, and low energy consumption. The invention is explained in more detail below with reference to the drawing.
  • FIGS 1a and b in a schematic longitudinal sectional view of a preferred embodiment of a switchable assembly bearing according to the invention in the closed position (a) and with another damping channel (b) open.
  • FIGS. 1a and b show a hydraulically damped unit bearing 1 according to the invention, which has a working chamber 10 and a compensation chamber 20 which are filled with a conventional hydraulic fluid.
  • the working chamber 10 is delimited by a frustoconical wall 3 made of rubber-elastic material, the so-called suspension spring.
  • the compensation chamber 20 is limited by a cup-shaped wall 4, which is also made of rubber-elastic material, for example an unpressurized volume bellows.
  • the motor-side bearing plate 3.1 is received, which is provided with a protruding screw bolt 3.2 for attachment to the motor.
  • a partition 50 is arranged between the working chamber 10 and the compensation chamber 20, in which a loose cage 52 is provided for receiving a loose membrane 54.
  • a damping channel 60 is also introduced, which hydraulically connects the two liquid-filled chambers 10 and 20 to one another.
  • the lower boundary wall 4 of the compensation chamber 20 is surrounded by a housing 4.1 on which a vertically protruding screw bolt 4.2 is provided for fixing the assembly bearing 1 on the body side.
  • the further damping channel 70 for the eradication of vibrations caused by idling is arranged in the partition 50. It can be seen that the further damping channel 70 in the present embodiment of the invention in the sectional view passes from the working chamber 10 in an approximately 90 ° bend from the vertical to the horizontal and opens into the connecting chamber 80 to the compensation chamber 20.
  • the further damping channel 70 and the connecting chamber 80 are designed in the manner of an annular gap as a peripheral circumferential opening.
  • a sealing ring 90 made of elastomeric magnetic material is located in the connecting chamber 80 as a shut-off body.
  • the sealing ring 90 can be moved back and forth in the connecting chamber 80 between two webs 81, 82, which serve as a stop, in the axial direction between an open and a closed position. It can be seen in FIGS. 1 a and b that the adjustment path of the sealing ring 90 runs perpendicular to the opening direction of the further damping channel 70.
  • an electromagnet 100 which is also peripheral in correspondence with the sealing ring 90 is provided and is arranged in a chamber 85 directly adjacent to the connecting chamber 80. In the closed position shown in FIG. 1a, the sealing ring 90 lies against the lower web 82 and, with its radially inner surface, seals the further damping channel 70 in a liquid-tight manner.
  • the sealing ring 90 By reversing the polarity of the electromagnet, the sealing ring 90 is brought into the opening position shown in FIG. 1b. It rests on the upper web 81 and thus provides the passage opening of the further damping channel 70
  • the sealing ring 90 can be kept currentless in the position shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Devices Of Dampers And Springs (AREA)

Abstract

La présente invention concerne un palier de groupes commutable (1) à amortissement hydraulique, destiné notamment à servir de support à des groupes d'entraînement et/ou de transmission dans des véhicules, ledit palier comprenant: au moins une chambre de travail (10) et une chambre de compensation (20) qui sont séparées par une paroi de séparation (50) tout en pouvant communiquer d'un point de vue hydraulique par un canal d'amortissement (60); au moins un autre canal d'amortissement (70) qui peut être refermé par mise en place de façon étanche d'un corps d'obturation (90) qui peut se déplacer le long d'une trajectoire de déplacement, sur un siège correspondant. Selon l'invention, l'autre canal d'amortissement est conçu et disposé, par rapport à l'axe de symétrie du palier, de sorte que les forces qui agissent sur le corps d'obturation par l'intermédiaire du liquide hydraulique, se compensent entre elles. Ainsi, pratiquement aucune force n'agit sur le corps d'obturation et celui-ci peut effectuer un mouvement de va-et-vient entre une position d'ouverture et une position de fermeture, avec des forces de déplacement limitées, ce qui permet au mécanisme d'actionnement du corps d'obturation d'être sensiblement simplifié et d'obtenir une structure sensiblement plus simple et plus compacte du groupe.
EP03744715A 2002-03-27 2003-03-26 Palier de groupes commutable a amortissement hydraulique Withdrawn EP1488133A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10213996A DE10213996A1 (de) 2002-03-27 2002-03-27 Schaltbares Aggregatelager mit hydraulischer Dämpfung
DE10213996 2002-03-27
PCT/EP2003/003124 WO2003081080A1 (fr) 2002-03-27 2003-03-26 Palier de groupes commutable a amortissement hydraulique

Publications (1)

Publication Number Publication Date
EP1488133A1 true EP1488133A1 (fr) 2004-12-22

Family

ID=28050947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03744715A Withdrawn EP1488133A1 (fr) 2002-03-27 2003-03-26 Palier de groupes commutable a amortissement hydraulique

Country Status (5)

Country Link
US (1) US7338036B2 (fr)
EP (1) EP1488133A1 (fr)
AU (1) AU2003226713A1 (fr)
DE (1) DE10213996A1 (fr)
WO (1) WO2003081080A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007014710B4 (de) * 2007-03-23 2009-02-26 Carl Freudenberg Kg Hydrolager
JP2008298156A (ja) * 2007-05-31 2008-12-11 Tokai Rubber Ind Ltd 流体封入式防振装置
DE102008061869A1 (de) 2008-12-15 2010-08-19 Carl Freudenberg Kg Hydrolager und Düsenkäfig dafür
DE102010021193B4 (de) * 2010-05-21 2012-10-25 Carl Freudenberg Kg Trennwand für ein Hydrolager
DE102010060885A1 (de) * 2010-08-26 2012-03-01 Contitech Vibration Control Gmbh Motorlager für ein Kraftfahrzeug
DE102010045277B4 (de) * 2010-09-14 2013-09-19 Carl Freudenberg Kg Trennwand für ein Hydrolager
DE102010048259A1 (de) 2010-10-12 2012-05-10 Volkswagen Ag Hydraulisch gedämpftes Lager
JP6166975B2 (ja) * 2013-07-24 2017-07-19 Ｋｙｂ株式会社 ダンパマウント装置
DE102017101968B4 (de) 2017-02-01 2020-07-23 Vibracoustic Gmbh Hydrolager

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4583723A (en) * 1983-06-10 1986-04-22 Toyoda Gosei Co., Ltd. Elastically damping device for suspension of engine
JPS60234144A (ja) * 1984-05-03 1985-11-20 Toyoda Gosei Co Ltd 液体封入防振装置
US4872652A (en) * 1986-06-11 1989-10-10 Firma Carl Freudenberg Two chamber engine mount
DE3619685A1 (de) * 1986-06-11 1987-12-17 Freudenberg Carl Fa Zweikammermotorlager
JPS6330623A (ja) 1986-07-21 1988-02-09 Toyo Tire & Rubber Co Ltd 液体減衰式防振マウント
JP3713765B2 (ja) * 1995-10-06 2005-11-09 日産自動車株式会社 防振支持装置
DE19861063C2 (de) * 1998-02-25 2002-02-14 Freudenberg Carl Kg Hydraulisch dämpfendes Lager
DE10017634B4 (de) 2000-04-03 2011-04-14 Anvis Deutschland Gmbh Hydraulisch geschaltetes Lager
DE10206927B4 (de) * 2002-02-19 2004-11-18 Trelleborg Automotive Technical Centre Gmbh Hydraulisch dämpfendes Lager

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03081080A1 *

Also Published As

Publication number Publication date
DE10213996A1 (de) 2003-10-16
US20050218571A1 (en) 2005-10-06
WO2003081080A1 (fr) 2003-10-02
US7338036B2 (en) 2008-03-04
AU2003226713A1 (en) 2003-10-08

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