EP0270917A2 - Spring elastic eccenter bearing for a displacement machine - Google Patents

Spring elastic eccenter bearing for a displacement machine Download PDF

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Publication number
EP0270917A2
EP0270917A2 EP87117346A EP87117346A EP0270917A2 EP 0270917 A2 EP0270917 A2 EP 0270917A2 EP 87117346 A EP87117346 A EP 87117346A EP 87117346 A EP87117346 A EP 87117346A EP 0270917 A2 EP0270917 A2 EP 0270917A2
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EP
European Patent Office
Prior art keywords
bearing
eccentric
rubber
elastic
recess
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Granted
Application number
EP87117346A
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German (de)
French (fr)
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EP0270917B1 (en
EP0270917A3 (en
Inventor
Hans Paul Maier
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Agintec AG
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Agintec AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/008—Driving elements, brakes, couplings, transmissions specially adapted for rotary or oscillating-piston machines or engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C17/00—Arrangements for drive of co-operating members, e.g. for rotary piston and casing
    • F01C17/06—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements
    • F01C17/063—Arrangements for drive of co-operating members, e.g. for rotary piston and casing using cranks, universal joints or similar elements with only rolling movement

Definitions

  • the invention relates to a spring-elastic eccentric bearing for displacement machines, the Vedränger perform a circular translational movement around an eccentric.
  • Such a displacement machine designed as a rotary piston machine can be found, for example, in DE-OS 22 30 773.
  • the displacer (piston) executes a circular (translational) movement around an eccentric.
  • eccentric shafts in a machining or built version have to be produced in a costly manner.
  • Displacers for pumps can be formed axially on one side or double-sided in such machines, so that there is in itself the possibility of supporting the displacers both radially and axially acting. In this way, depending on the choice of the spring characteristics, an adjustment of the pressure ranges for such pumps can be selected.
  • Such pressure-limited positive displacement pumps partly have the characteristics of flow pumps without the disadvantages such as a lack of self-priming ability, cavitation problems with restricted pipe cross sections and the like of flow machines.
  • a displacement machine with a curved displacer which is rotatably mounted on an eccentric coupled to a rotatably mounted drive shaft and is guided by this to perform a circular movement in a correspondingly curved displacement chamber with an inlet and an outlet .
  • the displacer can be deflected against the action of an elastic force from the contact position with the wall of the displacement chamber along lines of contact parallel to the axes of curvature.
  • a metallic spring element which acts as an energy store, is provided to generate the elastic force.
  • the spring element can be formed by the displacer formed as a leaf spring bent about a bending axis parallel to the axis of the circular movement.
  • the spring element can also be formed by an elastically deflectable wobble rod, which is articulated at one end to the displacer and is mounted between its ends in a ball joint, the center of which lies on the axis of rotation of the drive shaft.
  • DE-OS 26 03 462 discloses a positive displacement machine for compressible media.
  • the displacer describes a circular translational movement around an eccentric track.
  • it is essential to provide an anti-rotation device for the displacer, since otherwise the displacer would immediately suffer mechanical damage if the rotation was slight, in addition to the circular movement.
  • These displacement machines are also expensive
  • the displacer can also be axially suspended and additionally supported with an integrated anti-rotation device.
  • a known anti-rotation lock comprises a plurality of balls, each loaded by compression springs, which execute a slight eccentric movement in correspondingly designed pans.
  • the invention has for its object to design the spring-elastic eccentric bearing for the displacer of a positive displacement machine so that it can be manufactured more cost-effectively.
  • a bearing disk in which a recess for receiving a shaft is arranged eccentrically to the outer bearing shell, the material filling the space between the bearing shell and the recess being designed to be rubber-elastic.
  • the bearing disk according to the invention since it is already possible to impart different spring characteristics to a plastic by means of electron beam crosslinking, it would be possible to form the bearing disk according to the invention in one piece.
  • the outer bearing jacket is a bearing ring, into which a bush forming the aforementioned recess is vulcanized.
  • the bearing ring can preferably be the inner ring of a rolling bearing.
  • Rubber for example, can be used as the rubber-elastic material.
  • the operating temperatures for the choice of rubber material and the desired operating pressures for the Shore hardness (spring characteristic) of the rubber as well as for the cross-sections of the eccentric bearings are decisive through specifically arranged and designed cross-sectional weakenings (notches, beads and / or channels or the like). in the rubber-elastic material achieve a certain spring characteristic.
  • the bearing disc according to the invention is simple to manufacture, quick and easy to assemble, reliable in operation but economical in maintenance. Tests have shown that the spring-elastic bearings according to the invention not only achieve the specified operating pressures perfectly, but that, in particular in multi-shaft machines, the tolerances of the individual machine parts are compensated properly.
  • An eccentric bearing designed not only in the radial direction but also in the axial direction is characterized in accordance with the invention in that the bearing ring and / or the bushing covers or covers a portion of the end faces of the rubber-elastic material.
  • An equally inexpensive to manufacture as well as reliably working anti-rotation device for the displacer according to the invention consists of a bearing disc in the eccentric to the outer bearing jacket, a recess for receiving a pin or the like. is arranged, wherein the bearing disk consists of two cover disks sandwiching between them a layer of rubber-elastic material.
  • FIG. 1 shows a bearing disc 3, in which a recess 5 for receiving a shaft, not shown, is arranged eccentrically to the outer bearing jacket 4. That the gap between the bearing jacket 4 and the recess 5 filling material 7 is formed rubber-elastic.
  • the outer bearing jacket 4 is formed by a bearing ring 8, into which a bush 9 forming the said recess 5 is vulcanized.
  • Figures 3 and 4 show that the bearing ring 8 also be the inner ring of a roller bearing 10.
  • the inner diameter of the bearing ring 4 is a multiple of that of the bushing 9.
  • the bearing disk 3 has spring-elastic properties exclusively in the radial direction.
  • both the bearing ring 8 and the bushing 9 can each have a portion of the end faces of the rubber-elastic material 7 with a collar 11 or 12 cover.
  • the spring-elastic path in the radial direction is determined by the radial distance 15 between the collar 11 and the bushing 9 or by the radial distance 16 between the collar 12 and the bearing ring 8. In the exemplary embodiment, this radial spring travel is relatively short; Figure 7 shows that the resilient design is greater in the axial direction. This results from the axial distance between said collars 11 and 12 and from the elasticity of the rubber-elastic material 7.
  • the radial distances 15, 16 between the collar 11 and the bush 9 or the collar 12 and the bearing ring 8 can be made of the rubber-elastic material 7 filled out or left out of this material.
  • the bearing disc 3 according to FIGS. 8 and 9 has spring-elastic properties only in the axial direction.
  • the bearing plate 3 from two cover plates 14 sandwiching a layer of rubber-elastic material 7 between them.
  • a recess 5 for receiving a pin or the like is arranged eccentrically to the outer bearing jacket 4.
  • FIG. 9 shows that the rubber-elastic material 7 is arched somewhat radially inwards between the two cover disks 14 both in the area of the bearing casing 4 and in the area of the recess 5.
  • FIG. 11 shows a cross section through a displacement machine and reveals a displacer 1 which carries out a translational movement about an eccentric a with respect to a displacement chamber or a displacement housing 2.
  • the displacer 1 is driven in a conventional manner via an eccentric shaft 6.
  • a bearing disk 3 according to FIGS. 1 to 6 can be used for the eccentric bearing of the displacer.
  • FIGS. 10 and 11 also show an anti-rotation device for the displacer 1.
  • This anti-rotation device is formed by a bearing disk 3 according to FIGS. 8 and 9, that is to say a bearing disk which is designed to be spring-elastic only in the axial direction.
  • a pin 13 engages in the recess 5 arranged eccentrically to the outer bearing jacket 4 by the dimension a.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Support Of The Bearing (AREA)
  • Soil Working Implements (AREA)

Abstract

The invention relates to a spring-elastic eccentric bearing for displacement machines whose displacing devices carry out a circular translational movement about an eccentric. To produce a cost-effective design, a bearing disc is proposed in which a cut-out for holding a shaft is arranged eccentrically with respect to the outer bearing jacket, the material filling the space between the bearing jacket and the cut-out being of elastomer construction.

Description

Die Erfindung betrifft eine federelastische Exzenterlagerung für Verdrängermaschinen, deren Vedränger eine kreisende Trans­lationsbewegung um einen Exzenter ausführen.The invention relates to a spring-elastic eccentric bearing for displacement machines, the Vedränger perform a circular translational movement around an eccentric.

Eine derartige, als Kreiskolbenmaschine ausgelegte Verdänger­maschine läßt sich z.B. der DE-OS 22 30 773 entnehmen. Der Ver­dränger (Kolben) führt eine kreisende (translatorische) Bewegung um einen Exzenter aus. Hierfür müssen in kostenaufwendiger Weise Exzenterwellen in zerspanender oder gebauter Ausführung herge­stellt werden. Bei der Wahl bestimmter Betriebsdrücke dieser z.B. als Pumpen ausgeführten Verdrängermaschinen ergeben sich immer wieder Probleme bei der Auslegung und Tolerierung der Exzenterwellen der Verdrängerlager. Verdränger für Pumpen können in derartigen Maschinen axial einseitig oder doppelseitig ausge­bildet werden, so daß an sich die Möglichkeit besteht, die Ver­dränger sowohl radial - als auch axial wirkend federnd zu lagern. Hierdurch kann je nach Wahl der Federkennlinien eine Einstellung der Druckbereiche für solche Pumpen gewählt werden. Derartige druckbegrenzte Verdrängerpumpen haben teilweise die Charakteristik von Strömungspumpen, ohne die Nachteile wie z.B. mangelnde Selbstansaugfähigkeit, Kavitationsprobleme bei gedros­selten Rohrquerschnitten und dergl. von Strömungsmaschinen zu besitzen.Such a displacement machine designed as a rotary piston machine can be found, for example, in DE-OS 22 30 773. The displacer (piston) executes a circular (translational) movement around an eccentric. For this, eccentric shafts in a machining or built version have to be produced in a costly manner. When choosing certain operating pressures of these displacement machines, for example designed as pumps, there are always problems with the design and tolerance of the eccentric shafts of the displacement bearings. Displacers for pumps can be formed axially on one side or double-sided in such machines, so that there is in itself the possibility of supporting the displacers both radially and axially acting. In this way, depending on the choice of the spring characteristics, an adjustment of the pressure ranges for such pumps can be selected. Such pressure-limited positive displacement pumps partly have the characteristics of flow pumps without the disadvantages such as a lack of self-priming ability, cavitation problems with restricted pipe cross sections and the like of flow machines.

In der CH-PS 555 476 ist eine Verdrängermaschine mit einem ge­krümmten Verdränger offenbart, der drehbar auf einem an eine drehbar gelagerte Antriebswelle gekoppelten Exzenter gelagert ist und durch diesen zur Ausführung einer kreisenden Bewegung in einer entsprechend gekrümmten Verdrängerkammer mit einem Ein- und Auslaß geführt ist. Der Verdränger ist gegen die Wir­kung einer elastischen Kraft aus der Berührungslage mit der Wan­dung der Verdrängerkammer längs zu den Krümmungsachsen paralle­len Berührungslinien auslenkbar. Zur Erzeugung der elastischen Kraft ist ein metallisches, als Kraftspeicher wirkendes Feder­element vorgesehen. Das Federelement kann durch den als um eine zur Achse der kreisenden Bewegung parallele Biegeachse gebogene Blattfeder gebildeten Verdränger gebildet sein. Das Federelement kann aber auch durch einen elastisch durchbiegbaren Taumelstab gebildet werden, der an seinem einen Ende kugelgelenkig am Ver­dränger angelenkt und zwischen seinen Enden in einem Kugelgelenk gelagert ist, dessen Zentrum auf der Drehachse der Antriebswelle liegt.In CH-PS 555 476 a displacement machine with a curved displacer is disclosed, which is rotatably mounted on an eccentric coupled to a rotatably mounted drive shaft and is guided by this to perform a circular movement in a correspondingly curved displacement chamber with an inlet and an outlet . The displacer can be deflected against the action of an elastic force from the contact position with the wall of the displacement chamber along lines of contact parallel to the axes of curvature. A metallic spring element, which acts as an energy store, is provided to generate the elastic force. The spring element can be formed by the displacer formed as a leaf spring bent about a bending axis parallel to the axis of the circular movement. The spring element can also be formed by an elastically deflectable wobble rod, which is articulated at one end to the displacer and is mounted between its ends in a ball joint, the center of which lies on the axis of rotation of the drive shaft.

Bei Verdrängermaschinen dieser Bauart ergeben sich erhebliche funktionstechnische Probleme. Der genannte elastisch durchbieg­bare Taumelstab läßt sich aus dichtungstechnischen Gründen nicht realisieren. Gebaute Exzenterwellen mit metallischen Federn be­nötigen zusätzliche Führungselemente zur Abstützung und besitzen daher auch zusätzliche Kostennachteile.With displacement machines of this type, there are considerable functional problems. The elastically deflectable wobble rod mentioned cannot be realized for reasons of sealing technology. Built eccentric shafts with metallic springs require additional guide elements for support and therefore also have additional cost disadvantages.

Die DE-OS 26 03 462 offenbart eine Verdrängermaschine für kom­pressible Medien. Auch hier beschreibt der Verdränger eine krei­sende Translationsbewegung um eine Exzenterbahn. Bei derartigen Bauarten ist es unumgänglich, für den Verdränger eine Verdreh­sicherung vorzusehen, da andernfalls der Verdränger bei einer auch nur geringen, zusätzlich zur Kreisbewegung ausgeführten Drehbewegung sofort eine mechanische Beschädigung erleiden würde. Auch für diese Verdrängermaschinen kommen kostenaufwendig ge­ baute oder zerspanend hergestellte Exzenterwellen zum Einsatz, wobei der Verdränger auch axial gefedert und mit einer inte­grierten Verdrehsicherung zusätzlich gelagert sein kann. Eine bekanntgewordene Verdrehsicherung umfaßt mehrere, jeweils druck­federbelastete Kugeln, die in entsprechend ausgebildeten Pfan­nen eine geringe exzenterförmige Bewegung ausführen.DE-OS 26 03 462 discloses a positive displacement machine for compressible media. Here, too, the displacer describes a circular translational movement around an eccentric track. In such designs, it is essential to provide an anti-rotation device for the displacer, since otherwise the displacer would immediately suffer mechanical damage if the rotation was slight, in addition to the circular movement. These displacement machines are also expensive Built or machined eccentric shafts are used, the displacer can also be axially suspended and additionally supported with an integrated anti-rotation device. A known anti-rotation lock comprises a plurality of balls, each loaded by compression springs, which execute a slight eccentric movement in correspondingly designed pans.

Der Erfindung liegt die Aufgabe zugrunde, die eingangs erläuter­te federelastische Exzenterlagerung für den Verdränger einer Ver­drängermaschine konstruktiv so zu gestalten, daß sie sich kosten­günstiger herstellen läßt.The invention has for its object to design the spring-elastic eccentric bearing for the displacer of a positive displacement machine so that it can be manufactured more cost-effectively.

Diese Aufgabe wird gemäß der Erfindung gelöst durch eine Lager­scheibe, in der exzentrisch zum äußeren Lagermantel eine Aus­nehmung für die Aufnahme einer Welle angeordnet is, wobei das den Zwischenraum zwischen Lagermantel und Ausnehmung ausfüllende Material gummielastisch ausgebildet ist.This object is achieved according to the invention by a bearing disk in which a recess for receiving a shaft is arranged eccentrically to the outer bearing shell, the material filling the space between the bearing shell and the recess being designed to be rubber-elastic.

Da es durch Elektronenstrahlvernetzung bereits möglich ist, einem Kunststoff unterschiedliche Federcharakteristiken zu ver­leihen, bestände die Möglichkeit, die erfindungsgemäße Lager­scheibe einteilig auszubilden. Für eine eher konventionelle Herstellung ist es jedoch vorteilhaft, wenn der äußere Lagerman­tel ein Lagerring ist, in den eine die genannte Ausnehmung bil­dende Buchse einvulkanisiert ist. Dabei kann der Lagerring vor­zugsweise der Innenring eines Wälzlagers sein.Since it is already possible to impart different spring characteristics to a plastic by means of electron beam crosslinking, it would be possible to form the bearing disk according to the invention in one piece. For a more conventional production, however, it is advantageous if the outer bearing jacket is a bearing ring, into which a bush forming the aforementioned recess is vulcanized. The bearing ring can preferably be the inner ring of a rolling bearing.

Als gummielastisches Material kann z.B. Kautschuk Verwendung finden. Dabei sind die Betriebstemperaturen für die Werkstoff­wahl des Kautschuks und die gewünschten Betriebsdrücke für die Shore-Härte (Federkennlinie)des Kautschuks sowie für die Quer­schnitte der Exzenterlagerungen bestimmend.Durch gezielt angeord­nete und ausgebildete Querschnittsschwächungen (Kerben, Sicken und/oder Kanäle o.dergl.) im gummielastischen Material läßt sich eine bestimmte Federkennlinie erzielen.Rubber, for example, can be used as the rubber-elastic material. The operating temperatures for the choice of rubber material and the desired operating pressures for the Shore hardness (spring characteristic) of the rubber as well as for the cross-sections of the eccentric bearings are decisive through specifically arranged and designed cross-sectional weakenings (notches, beads and / or channels or the like). in the rubber-elastic material achieve a certain spring characteristic.

Die erfindungsgemäße Lagerscheibe ist einfach herzustellen, schnell und komplikationslos zu montieren, zuverlässig im Be­trieb aber genügsam in der Wartung. Versuche haben gezeigt, daß bei den erfindungsgemäßen federelastischen Lagerungen nicht nur die vorgegebenen Betriebsdrücke einwandfrei erreicht, sondern daß insbesondere bei mehrwelligen Maschinen die Toleranzen der einzelnen Maschinenteile einwandfrei kompensiert werden.The bearing disc according to the invention is simple to manufacture, quick and easy to assemble, reliable in operation but economical in maintenance. Tests have shown that the spring-elastic bearings according to the invention not only achieve the specified operating pressures perfectly, but that, in particular in multi-shaft machines, the tolerances of the individual machine parts are compensated properly.

Für die Drehmoment-Übertragung zwischen Welle und gummielasti­scher Exzenterlagerung können alle denkbaren formschlüssigen und/oder kraftschlüssigen Verbindungstechniken wie Gewinde, Keil-/Nut-Verbindung, Aufpressen o.dergl. gewählt werden.For the torque transmission between shaft and rubber-elastic eccentric bearing, all conceivable positive and / or non-positive connection technologies such as thread, key / groove connection, pressing or the like can be used. to get voted.

Eine nicht nur in radialer Richtung sondern auch in axialer Richtung federelastisch ausgebildete Exzenterlagerung ist er­findungsgemäß dadurch gekennzeichnet, daß der Lagerring und/oder die Buchse mit einem Kragen einen Teilbereich der Stirnseiten des gummielastischen Materials abdeckt bzw. abdecken.An eccentric bearing designed not only in the radial direction but also in the axial direction is characterized in accordance with the invention in that the bearing ring and / or the bushing covers or covers a portion of the end faces of the rubber-elastic material.

Eine ebenso preiswert herzustellende wie zuverlässig arbeitende Verdrehsicherung für den Verdränger besteht erfindungsgemäß aus einer Lagerscheibe in der exzentrisch zum äußeren Lagermantel eine Ausnehmung für die Aufnahme eines Zapfens o.dergl. angeord­net ist, wobei die Lagerscheibe aus zwei Deckscheiben besteht, die zwischen sich sandwichartig eine Schicht aus gummielasti­schem Material einschließen.An equally inexpensive to manufacture as well as reliably working anti-rotation device for the displacer according to the invention consists of a bearing disc in the eccentric to the outer bearing jacket, a recess for receiving a pin or the like. is arranged, wherein the bearing disk consists of two cover disks sandwiching between them a layer of rubber-elastic material.

In der Zeichnung sind einige als Beispiele dienende Ausführungs­formen der Erfindung dargestellt. Es zeigen:

  • Figur 1 eine Lagerscheibe in Draufsicht;
  • Figur 2 einen Querschnitt der Lagerscheibe gemäß Figur 1;
  • Figur 3 in einer abgewandelten Ausführungsform eine Lager­scheibe in einer Darstellung gemäß Figur 1;
  • Figur 4 die Lagerscheibe gemäß Figur 3 im Querschnitt (obere Hälfte) sowie in Stirnansicht (untere Hälfte);
  • Figur 5 eine abgewandelte Ausführungsform einer Lagerscheibe in einer Darstellung gemäß Figur 1;
  • Figur 6 die andere Stirnseite der Lagerscheibe gemäß Figur 5;
  • Figur 7 ein Querschnitt gemäß der Linie VII-VII in Figur 6;
  • Figur 8 eine abgewandelte Ausführungsform einer Lagerscheibe in einer Darstellung gemäß Figur 5;
  • Figur 9 einen Querschnitt durch die Lagerscheibe gemäß Figur 8;
  • Figur 10 in Draufsicht und zum Teil im Schnitt gemäß der Linie B-B in Figur 11 eine Exzenterlagerung mit einer Ver­drehsicherung für einen Verdränger und
  • Figur 11 in vergrößertem Maßstab einen Schnitt gemäß der Linie A-A in Figur 10.
Some exemplary embodiments of the invention are shown in the drawing. Show it:
  • Figure 1 shows a bearing washer in plan view;
  • Figure 2 shows a cross section of the bearing washer according to Figure 1;
  • Figure 3 in a modified embodiment, a bearing plate in a representation according to Figure 1;
  • Figure 4 shows the bearing washer according to Figure 3 in cross section (upper half) and in front view (lower half);
  • FIG. 5 shows a modified embodiment of a bearing disk in a representation according to FIG. 1;
  • FIG. 6 the other end face of the bearing disk according to FIG. 5;
  • 7 shows a cross section along the line VII-VII in Figure 6;
  • FIG. 8 shows a modified embodiment of a bearing disk in a representation according to FIG. 5;
  • 9 shows a cross section through the bearing washer according to FIG. 8;
  • Figure 10 in plan view and partly in section along the line BB in Figure 11, an eccentric bearing with an anti-rotation device for a displacer and
  • FIG. 11 shows an enlarged section along the line AA in FIG. 10.

Figur 1 zeigt eine Lagerscheibe 3, in der exzentrisch zum äußeren Lagermantel 4 eine Ausnehmung 5 für die Aufnahme einer nicht dargestellten Welle angeordnet ist. Das den Zwischenraum zwischen Lagermantel 4 und Ausnehmung 5 ausfüllende Material 7 ist gummielastisch ausgebildet. Der äußere Lagermantel 4 wird durch einen Lagerring 8 gebildet, in den eine die genannte Aus­nehmung 5 bildende Buchse 9 einvulkanisiert ist.FIG. 1 shows a bearing disc 3, in which a recess 5 for receiving a shaft, not shown, is arranged eccentrically to the outer bearing jacket 4. That the gap between the bearing jacket 4 and the recess 5 filling material 7 is formed rubber-elastic. The outer bearing jacket 4 is formed by a bearing ring 8, into which a bush 9 forming the said recess 5 is vulcanized.

Die Figuren 3 und 4 lassen erkennen, daß der Lagerring 8 auch der Innenring eines Wälzlagers 10 sein kein. In beiden Aus­führungsbeispielen gemäß den Figuren 1 bis 4 beträgt der Innen­durchmesser des Lagerringes 4 ein Mehrfaches von dem der Buchse 9.Figures 3 and 4 show that the bearing ring 8 also be the inner ring of a roller bearing 10. In both exemplary embodiments according to FIGS. 1 to 4, the inner diameter of the bearing ring 4 is a multiple of that of the bushing 9.

Bei den beiden Ausführungsbeispielen gemäß den Figuren 1 bis 4 weist die Lagerscheibe 3 ausschließlich in radialier Richtung federelastische Eigenschaften auf.In the two exemplary embodiments according to FIGS. 1 to 4, the bearing disk 3 has spring-elastic properties exclusively in the radial direction.

Um eine nicht nur in radialier Richtung sondern auch in axialer Richtung federelastisch ausgebildete Exzenterlagerung zu er­halten, können gemäß den Figuren 5 bis 7 sowohl der Lagerring 8 als auch die Buchse 9 jeweils mit einem Kragen 11 bzw. 12 einen Teilbereich der Stirnseiten des gummielastischen Materials 7 abdecken. Der federelastische Weg in radialer Richtung wird be­stimmt durch den Radialabstand 15 zwischen dem Kragen 11 und der Buchse 9 bzw. durch den Radialabstand 16 zwischen dem Kra­gen 12 und dem Lagerring 8. Im Ausführungsbeispiel ist dieser radiale Federweg verhältnismäßig kurz ausgebildet; Figur 7 läßt erkennen, daß die federelastische Ausbildung in Axial­richtung größer ist. Diese ergibt sich aus dem Axialabstand zwischen den genannten Kragen 11 und 12 sowie aus der Elastizität des gummielastischen Materials 7. Die genannten Radialabstände 15,16 zwischen dem Kragen 11 und der Buchse 9 bzw. dem Kragen 12 und dem Lagerring 8 können von dem gummi­elastischen Material 7 ausgefüllt oder aber von diesem Material ausgespart sein.In order to obtain an eccentric bearing designed not only in the radial direction but also in the axial direction, according to FIGS. 5 to 7 both the bearing ring 8 and the bushing 9 can each have a portion of the end faces of the rubber-elastic material 7 with a collar 11 or 12 cover. The spring-elastic path in the radial direction is determined by the radial distance 15 between the collar 11 and the bushing 9 or by the radial distance 16 between the collar 12 and the bearing ring 8. In the exemplary embodiment, this radial spring travel is relatively short; Figure 7 shows that the resilient design is greater in the axial direction. This results from the axial distance between said collars 11 and 12 and from the elasticity of the rubber-elastic material 7. The radial distances 15, 16 between the collar 11 and the bush 9 or the collar 12 and the bearing ring 8 can be made of the rubber-elastic material 7 filled out or left out of this material.

Die Lagerscheibe 3 gemäß den Figuren 8 und 9 weist nur in axialer Richtung federelastische Eigenschaften auf. Hier besteht die Lagerscheibe 3 aus zwei Deckscheiben 14, die zwischen sich sandwichartig eine Schicht aus gummielastischem Material 7 ein­schließen. Wie bei den vorgehend beschriebenen Ausführungsformen ist auch hier exzentrisch zum äußeren Lagermantel 4 eine Aus­nehmung 5 für die Aufnahme eines Zapfens oder dergl. angeordnet. Figur 9 läßt erkennen, daß das gummielastische Material 7 so­wohl im Bereich des Lagermantels 4 als auch im Bereich der Aus­nehmung 5 etwas radial nach innen zwischen die beiden Deckschei­ben 14 eingewölbt ist.The bearing disc 3 according to FIGS. 8 and 9 has spring-elastic properties only in the axial direction. Here there is the bearing plate 3 from two cover plates 14 sandwiching a layer of rubber-elastic material 7 between them. As in the embodiments described above, a recess 5 for receiving a pin or the like is arranged eccentrically to the outer bearing jacket 4. FIG. 9 shows that the rubber-elastic material 7 is arched somewhat radially inwards between the two cover disks 14 both in the area of the bearing casing 4 and in the area of the recess 5.

Die Figuren 10 und 11 zeigen die Einsatzmöglichkeiten für die vorstehend beschreibenen Lagerscheiben. Dabei zeigt Figur 11 einen Querschnitt durch eine Verdrängermaschine und läßt einen Verdränger 1 erkennen, der gegenüber einer Verdrängerkammer bzw. einem Verdrängergehäuse 2 eine Translationsbewegung um einen Exzenter a ausführt. Hierbei erfolgt der Antrieb des Ver­drängers 1 in herkömmlicher Weise über eine Exzenterwelle 6. Erfindungsgemäß kann für die Exzenterlagerung des Verdrängers 1 eine Lagerscheibe 3 gemäß den Figuren 1 bis 6 Verwendung finden. Zusätzlich zeigen die Figuren 10 und 11 auch noch eine Verdreh­sicherung für den Verdränger 1. Diese Verdrehsicherung wird ge­bildet durch eine Lagerscheibe 3 gemäß den Figuren 8 und 9, also eine Lagerscheibe, die ausschließlich in Axialrichtung federelastisch ausgebildet ist. In die um das Maß a exzentrisch zum äußeren Lagermantel 4 angeordnete Ausnehmung 5 greift ein Zapfen 13 ein.Figures 10 and 11 show the possible uses for the bearing disks described above. FIG. 11 shows a cross section through a displacement machine and reveals a displacer 1 which carries out a translational movement about an eccentric a with respect to a displacement chamber or a displacement housing 2. Here, the displacer 1 is driven in a conventional manner via an eccentric shaft 6. According to the invention, a bearing disk 3 according to FIGS. 1 to 6 can be used for the eccentric bearing of the displacer. In addition, FIGS. 10 and 11 also show an anti-rotation device for the displacer 1. This anti-rotation device is formed by a bearing disk 3 according to FIGS. 8 and 9, that is to say a bearing disk which is designed to be spring-elastic only in the axial direction. A pin 13 engages in the recess 5 arranged eccentrically to the outer bearing jacket 4 by the dimension a.

Claims (8)

1. Federelastische Exzenterlagerung für Verdrängermaschinen, deren Verdränger (1) eine kreisende Translationsbewegung um einen Exzenter ausführen, gekennzeichnet durch eine Lagerscheibe (3), in der exzentrisch zum äußeren Lagermantel (4) eine Ausnehmung (5) für die Aufnahme einer Welle (6) angeordnet ist, wobei das den Zwischenraum zwi­schen Lagermantel (4) und Ausnehmung (5) ausfüllende Material (7) gummielastisch ausgebildet ist.1. Spring-elastic eccentric bearing for displacement machines, the displacer (1) of which performs a circular translational movement around an eccentric, characterized by a bearing disc (3), in the eccentric to the outer bearing jacket (4), a recess (5) for receiving a shaft (6) is arranged, the material (7) filling the space between the bearing jacket (4) and the recess (5) being designed to be rubber-elastic. 2. Exzenterlagerung nach Anspruch 1, dadurch gekennzeichnet, daß der äußere Lagermantel (4) in Lagerring (8) ist, in den eine die genannte Ausnehmung (5) bildende Buchse (9) einvulkanisiert ist.2. Eccentric bearing according to claim 1, characterized in that the outer bearing casing (4) in the bearing ring (8), in which a said recess (5) forming the bushing (9) is vulcanized. 3. Exzenterlagerung nach Anspruch 2, dadurch gekennzeichnet, daß der Lagerring (8) der Innenring eines Wälzlagers (10) ist.3. eccentric bearing according to claim 2, characterized in that the bearing ring (8) is the inner ring of a rolling bearing (10). 4. Exzenterlagerung nach Anspruch 2 oder 3, dadurch gekennzeich­net, daß der Innendurchmesser des Lagerringes (8) ein Mehr­faches von dem der Buchse (9) beträgt.4. eccentric bearing according to claim 2 or 3, characterized in that the inner diameter of the bearing ring (8) is a multiple of that of the bushing (9). 5. Exzenterlagerung nach einem der vorhergehenden Ansprüche, da­durch gekennzeichnet, daß das gummielastische Material (7) Kautschuk ist.5. eccentric bearing according to one of the preceding claims, characterized in that the rubber-elastic material (7) is rubber. 6. Exzenterlagerung nach einem der vorhergehenden Ansprüche, ge­kennzeichnet durch gezielt angeordnete und ausgebildete Querschnittsschwächungen im gummielastischen Material (7) zur Erzielung einer bestimmten Federkennlinie.6. eccentric bearing according to one of the preceding claims, characterized by specifically arranged and formed cross-sectional weakenings in the rubber-elastic material (7) to achieve a certain spring characteristic. 7. Exzenterlagerung nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß der Lagerring (8) und/oder die Buchse (9) mit einem Kragen (11,12) einen Teilbereich der Stirnseiten des gummielastischen Materials(7) abdeckt bzw. abdecken.7. Eccentric bearing according to one of claims 2 to 6, characterized in that the bearing ring (8) and / or the bushing (9) with a collar (11, 12) covers or covers a portion of the end faces of the rubber-elastic material (7) . 8. Exzenterlagerung nach Anspruch 1, gekennzeichnet durch eine Verdrehsicherung für den Verdränger (1), bestehend aus einer Lagerscheibe (3), in der exzentrisch zum äußeren Lager­mantel (4) eine Ausnehmung (5) für die Aufnahme eines Zapfens (13) o.dergl. angeordnet ist, wobei die Lagerschei­be (3) aus zwei Deckscheiben (14) besteht, die zwischen sich sandwichartig eine Schicht aus gummielastischem Material (7) einschließen.8. eccentric bearing according to claim 1, characterized by an anti-rotation device for the displacer (1), consisting of a bearing disc (3) in the eccentric to the outer bearing jacket (4), a recess (5) for receiving a pin (13) o. the like The bearing disk (3) consists of two cover disks (14) which sandwich a layer of rubber-elastic material (7) between them.
EP87117346A 1986-12-10 1987-11-25 Spring elastic eccenter bearing for a displacement machine Expired - Lifetime EP0270917B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3642116 1986-12-10
DE19863642116 DE3642116A1 (en) 1986-12-10 1986-12-10 SPRING-ELASTIC ECCENTRIC BEARING FOR DISPLACEMENT MACHINES

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EP0270917A2 true EP0270917A2 (en) 1988-06-15
EP0270917A3 EP0270917A3 (en) 1988-09-14
EP0270917B1 EP0270917B1 (en) 1991-12-11

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EP87117346A Expired - Lifetime EP0270917B1 (en) 1986-12-10 1987-11-25 Spring elastic eccenter bearing for a displacement machine

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EP (1) EP0270917B1 (en)
DE (2) DE3642116A1 (en)
ES (1) ES2026887T3 (en)

Cited By (3)

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US5154592A (en) * 1989-10-20 1992-10-13 Tokico Ltd. Scroll type fluid apparatus with rotation restraining mechanism
US5201645A (en) * 1992-07-20 1993-04-13 Ford Motor Company Compliant device for a scroll-type compressor
WO2016067206A1 (en) * 2014-10-30 2016-05-06 Valeo Japan Co., Ltd. Compressor, notably for motor vehicles

Families Citing this family (2)

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DE3729319C2 (en) * 1987-09-02 1995-11-16 Bock Gmbh & Co Kaeltemaschinen Scroll compressor
DE4116827C2 (en) * 1990-05-30 2002-10-17 Volkswagen Ag Eccentric drive with a bearing arrangement having an elastic bedding

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CH253005A (en) * 1945-11-29 1948-02-15 Otto Herfeld & Co Running stain for shoes.
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CH453005A (en) * 1967-03-03 1968-05-31 Mefina Sa Crank, especially for sewing machine
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GB533960A (en) * 1938-09-01 1941-02-25 Zd Y Ringhoffer Tatra As Improvements in resilient members for the attachment of various components of motor vehicles
US2475247A (en) * 1944-05-22 1949-07-05 Mikulasek John Planetary piston fluid displacement mechanism
CH253005A (en) * 1945-11-29 1948-02-15 Otto Herfeld & Co Running stain for shoes.
CH453005A (en) * 1967-03-03 1968-05-31 Mefina Sa Crank, especially for sewing machine
FR2107783A5 (en) * 1970-09-18 1972-05-05 Schwermasch Liebknecht Veb K
DE2518150A1 (en) * 1975-04-24 1976-11-04 Fichtel & Sachs Ag Eccentric for radial or rotary engines - comprises cylindrical sleeve connected eccentrically to shaft by connecting member of non-circular section
DE3538522A1 (en) * 1985-06-04 1986-12-04 Volkswagen AG, 3180 Wolfsburg Positive-displacement machine for compressible media

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5154592A (en) * 1989-10-20 1992-10-13 Tokico Ltd. Scroll type fluid apparatus with rotation restraining mechanism
US5201645A (en) * 1992-07-20 1993-04-13 Ford Motor Company Compliant device for a scroll-type compressor
WO2016067206A1 (en) * 2014-10-30 2016-05-06 Valeo Japan Co., Ltd. Compressor, notably for motor vehicles
FR3027972A1 (en) * 2014-10-30 2016-05-06 Valeo Japan Co Ltd COMPRESSOR, IN PARTICULAR FOR MOTOR VEHICLE
CN107076144A (en) * 2014-10-30 2017-08-18 法雷奥日本株式会社 It is particularly used for the compressor of motor vehicles
JP2017532495A (en) * 2014-10-30 2017-11-02 株式会社ヴァレオジャパン Car compressor
CN107076144B (en) * 2014-10-30 2020-04-17 法雷奥日本株式会社 Compressor, in particular for a motor vehicle

Also Published As

Publication number Publication date
DE3642116A1 (en) 1988-06-23
EP0270917B1 (en) 1991-12-11
DE3775187D1 (en) 1992-01-23
ES2026887T3 (en) 1992-05-16
DE3642116C2 (en) 1989-12-21
EP0270917A3 (en) 1988-09-14

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