EP0090823A1 - Annular piston for multidisk coupling - Google Patents

Annular piston for multidisk coupling

Info

Publication number
EP0090823A1
EP0090823A1 EP19820902981 EP82902981A EP0090823A1 EP 0090823 A1 EP0090823 A1 EP 0090823A1 EP 19820902981 EP19820902981 EP 19820902981 EP 82902981 A EP82902981 A EP 82902981A EP 0090823 A1 EP0090823 A1 EP 0090823A1
Authority
EP
European Patent Office
Prior art keywords
piston
axis
sleeves
wall
ring
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Withdrawn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
EP19820902981
Other languages
German (de)
French (fr)
Inventor
Karl-Heinz Fitz
Hans Poensgen
Dieter Rosenthal
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.)
Fritz Himmermann & Co KG GmbH
Original Assignee
Fritz Himmermann & Co KG GmbH
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 Fritz Himmermann & Co KG GmbH filed Critical Fritz Himmermann & Co KG GmbH
Publication of EP0090823A1 publication Critical patent/EP0090823A1/en
Withdrawn legal-status Critical Current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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
    • F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
    • F16D55/36—Brakes with a plurality of rotating discs all lying side by side
    • 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
    • F16D25/00—Fluid-actuated clutches
    • F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
    • F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
    • 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
    • F16D25/00—Fluid-actuated clutches
    • F16D25/12—Details not specific to one of the before-mentioned types
    • 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
    • F16D2125/00—Components of actuators
    • F16D2125/02—Fluid-pressure mechanisms
    • F16D2125/06—Pistons

Definitions

  • the invention relates to an annular piston for multi-disc clutches, in particular motor vehicle clutches, which is rotatable about the axis to be coupled and axially displaceable in the clutch against the force of coil springs and has a cylindrical piston wall and a piston crown extending at right angles to it, which has numerous , arranged concentrically to the axis , connected to the piston head, - the coil springs axially leading brackets is provided.
  • the well-known ring pistons of this type are die-cast parts made of a light metal alloy.
  • the brackets for the coil springs are formed by bolts cast onto the piston crown, onto which the coil springs are attached. These bolts are heavily loaded because the ring piston rotates in the clutch at a very high speed, for example 8000 revolutions per minute, as a result of which the coil springs press against the bolts with a very high centrifugal force. At high speeds, the centrifugal force becomes so great that the guide pins cannot apply the opposing centripetal force and break off at the piston crown.
  • the known ring pistons are made of a light metal in the die-casting process. Alloy are made ⁇ they have the disadvantage that they are relatively heavy and their production is expensive.
  • the object of the present invention is to create a ring piston for multi-disc clutches which can be produced with less effort than the known ring pistons and whose weight is lighter.
  • This object is achieved in that the ring piston is made of a fiber-reinforced plastic and the brackets for the coil springs are formed by integrally molded cylindrical sleeves, which are supported radially against the cylindrical piston wall and circularly against each other *
  • This ring piston has the advantage that the sleeves cast onto the piston crown hold the coil springs reliably, even at very high speeds.
  • the ring pistons produced in the injection molding process advantageously consist of a glass fiber reinforced polyamide.
  • the glass fiber content can be 20 to 40%, preferably 30%.
  • Such a material is lighter than light metal with the same resilience and has the advantage that the Processing technology is less complex than with the metal die casting process »
  • the sleeves can be supported against each other in a circular manner in that they are arranged next to one another without any spacing.
  • the sleeves can also be connected to one another via webs which are concentric to the axis.
  • the tangential support of the sleeves can follow that the sleeves lie against the inside of the cylindrical piston wall or that the sleeves over
  • FIG. 1 shows a sectional view along the line I-I in FIG. 2 of the annular piston
  • Fig. 3 is a sectional view along the line III-III in Fig. 4 of an annular piston and
  • FIG. 4 is a plan view of an annular piston with sleeves which are supported against the piston wall a ′′ via radially standing webs,
  • Fig. 5 is a sectional view along the line.
  • V-V in Figbericht 6 an annular piston and
  • FIG. 6 is a plan view of an annular piston, the sleeves of which bear against the cylindrical piston wall.
  • FIGS. 1 to 6 show ring pistons for vehicle clutches that are actuated by oil hydraulics.
  • the coil springs press the ring piston in the starting position.
  • the ring piston which is sealed against a cylindrical housing by piston rings, is pressed against the Pressure of the screws: axially displaced »The ring piston presses with its pressure surface against the disks of the clutch »
  • the annular piston 1 shown in FIGS. 1 and 2 has a cylindrical piston wall 2 and a piston head 3 running at right angles thereto.
  • the annular piston has an outer groove 4 and an inner groove 5, in each of which a piston ring is inserted.
  • Coil springs serve sleeves. 6, which are arranged concentrically to the axis 7 of the clutch on the piston crown 3.
  • the sleeves 6 are connected in one piece to the piston crown 3 and are connected to one another by means of webs 9 running circularly or concentrically to the axis 7. Furthermore, the sleeves 6 are supported against the piston wall 2 via 2 webs 10 and 11 of equal length, which are at an angle of 75 ° to each other. Because the sleeves 6 are integrally connected to one another and to the piston wall 2 by means of webs 9, 10 and 11, the annular piston has a very high degree of rigidity, and the sleeves can exert very large centrifugal forces in order to close the coil springs hold and guide »As shown in Fig.
  • the Wand ⁇ strength of the sleeves 6 may be less than 1 mm * Since the walls of the sleeves 6 via the webs 9, 10 and ' 11 are connected to each other as well as to the piston crown 3 and the piston wall 2, a very favorable material flow becomes when the plastic parts are sprayed created »
  • a short bolt 13 is arranged in the center of each sleeve 6 J and additionally holds the helical spring to be inserted into the sleeve 6 1 at one end.
  • the sleeves 6 "of the annular piston 1" are supported radially against the inside 14 of the cylindrical piston wall 2 by lying directly against this piston wall.
  • the circular support of the sleeves 6 " takes place - here also via short webs 9 "», which run concentrically to the coupling axis 7 "

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

Le piston annulaire pour accouplement multidisque, en particulier pour véhicule à moteur, est rotatif autour de l'axe (7) d'accouplement et déplaçable axialement contre la force exercée par des ressorts à boudin. Le piston présente une paroi cylindrique (2) et une paroi de base (3) s'étendant perpendiculairement à la paroi cylindrique. Plusieurs supports de guidage axial des ressorts à boudin, coaxiaux à l'axe (7), sont reliés à la paroi de base (3). Le nouveau piston annulaire (1) est fabriqué en matière synthétique armée de fibres, en particulier en polyamide armé de fibres de verre par un procédé de moulage par injection. Les supports pour les ressorts à boudin sont constitués par des manchons cylindriques (6) obtenus en une seule pièce. Radialement, ils prennent appui contre la paroi cylindrique (2) du piston et circulairement, ils se soutiennent mutuellement.The annular piston for multi-disc coupling, in particular for a motor vehicle, is rotatable about the coupling axis (7) and axially displaceable against the force exerted by coil springs. The piston has a cylindrical wall (2) and a base wall (3) extending perpendicular to the cylindrical wall. Several supports for axial guidance of the coil springs, coaxial with the axis (7), are connected to the base wall (3). The new annular piston (1) is made of fiber-reinforced synthetic material, in particular polyamide reinforced with glass fibers by an injection molding process. The supports for the coil springs consist of cylindrical sleeves (6) obtained in one piece. Radially, they bear against the cylindrical wall (2) of the piston and circularly, they support each other.

Description

Ringkolben für Mehrscheibenkupplung Ring piston for multi-disc clutch
Die Erfindung bezieht sich auf einen Ringkolben für Mehrscheibenkupplungen, insbesondere Kraftfahrzeug¬ kupplungen, der um die zu kuppelnde Achse drehbar und gegen die Kraft von Schraubenfedern axial verschiebbar in der Kupplung angeordnet ist und eine zylindrische Kolbenwand und einen rechtwinklig dazu verlaufenden Kolbenboden aufweist, der mit zahlreichen, konzentrisch zur Achse angeordneten, ,mit dem Kolbenboden verbundenen, -die Schraubenfedern axial führenden Halterungen versehen ist.The invention relates to an annular piston for multi-disc clutches, in particular motor vehicle clutches, which is rotatable about the axis to be coupled and axially displaceable in the clutch against the force of coil springs and has a cylindrical piston wall and a piston crown extending at right angles to it, which has numerous , arranged concentrically to the axis , connected to the piston head, - the coil springs axially leading brackets is provided.
Die bekannten Ringkolben dieser Art sind Druckgußteile aus einer Leichtmetall-Legierung» Die Halterungen für die Schraubenfedern werden von am Kolbenboden angegossenen Bolzen gebildet, auf die die Schraubenfedern aufgesteckt werden. Diese Bolzen sind hoch belastet, da der Ringkol— ben in der Kupplung mit sehr hoher Drehzahl, beispiels¬ weise 8000 Umdrehungen pro Minute, umläuft, wodurch sich die Schraubenfedern mit sehr großer Zentrifugalkraft gegen die Bolzen anlegen,. Bei hohen Drehzahlen wird die Zentrifugalkraft so groß, daß die Führungsbolzen die ent¬ gegengerichtete Zentripedalkraft nicht aufbringen können und am Kolbenboden abbrechen.. Obwohl die bekannten Ring¬ kolben im Druckgußverfahren aus einer Leichtmetall— Legierung hergestellt werden^ haben sie den Nachteil, daß sie relativ schwer sind und ihre Herstellung teuer ist..The well-known ring pistons of this type are die-cast parts made of a light metal alloy. The brackets for the coil springs are formed by bolts cast onto the piston crown, onto which the coil springs are attached. These bolts are heavily loaded because the ring piston rotates in the clutch at a very high speed, for example 8000 revolutions per minute, as a result of which the coil springs press against the bolts with a very high centrifugal force. At high speeds, the centrifugal force becomes so great that the guide pins cannot apply the opposing centripetal force and break off at the piston crown. Although the known ring pistons are made of a light metal in the die-casting process. Alloy are made ^ they have the disadvantage that they are relatively heavy and their production is expensive.
Aufgabe der vorliegenden Erfindung ist es, einen Ring¬ kolben für Mehrscheibenkupplungen zu schaffen, der mit geringerem Aufwand als die bekannten Ringkolben herstell¬ bar ist und dessen Gewicht leichter ist,. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Ringkolben aus einem faserarmierten Kunststoff hergestellt ist und die Halterungen für die Schraubenfedern von einstückig angeformten, zylindrischen Hülsen gebildet ist, die radial gegen die zylindrische Kolbenwand und zirkulär gegeneinander abgestützt sind* The object of the present invention is to create a ring piston for multi-disc clutches which can be produced with less effort than the known ring pistons and whose weight is lighter. This object is achieved in that the ring piston is made of a fiber-reinforced plastic and the brackets for the coil springs are formed by integrally molded cylindrical sleeves, which are supported radially against the cylindrical piston wall and circularly against each other *
Dieser Ringkolben hat den Vorteil, daß die am Kolben¬ boden angegossenen Hülsen die Schraubenfedern, auch bei sehr hohen Drehzahlen zuverlässig halten»This ring piston has the advantage that the sleeves cast onto the piston crown hold the coil springs reliably, even at very high speeds.
Die im Spritzgußverfahren hergestellten Ringkolben be¬ stehen vorteilhafterweise aus einem glasfaserarmierten Polyamid.. Der Glasfaseranteil kann bei 20 bis 40 %, vor¬ zugsweise bei 30 % liegen.. Ein derartiges Material ist bei gleicher Belastbarkeit leichter als Leichtmetall und hat den Vorteil, daß die Verarbeitungstechnik weniger aufwendig ist als beim Metall-Druckgußverfahren»The ring pistons produced in the injection molding process advantageously consist of a glass fiber reinforced polyamide. The glass fiber content can be 20 to 40%, preferably 30%. Such a material is lighter than light metal with the same resilience and has the advantage that the Processing technology is less complex than with the metal die casting process »
Die Hülsen können dadurch zirkulär gegeneinander abge¬ stützt sein, daß sie ohne Abstand nebeneinander angeord- net sind.. Die Hülsen können aber auch über konzentrisch zur Achse verlaufende Stege miteinander verbunden sein.The sleeves can be supported against each other in a circular manner in that they are arranged next to one another without any spacing. The sleeves can also be connected to one another via webs which are concentric to the axis.
Die tangentiale Abstützung der Hülsen kann dadurch er¬ folgen, daß die Hülsen an der Innenseite der zylindri- sehen Kolbenwand anliegen oder aber daß die Hülsen überThe tangential support of the sleeves can follow that the sleeves lie against the inside of the cylindrical piston wall or that the sleeves over
- Stege gegen diese zylindrische Kolbenwand abgestützt sind»- Webs are supported against this cylindrical piston wall »
In der folgenden Beschreibung werden unter Bezugnahme auf die Zeichnungen drei Ausführungsbeispiele der Er¬ findung näher erläutert» Es zeigenIn the following description, three exemplary embodiments of the invention are explained in more detail with reference to the drawings
Fig. 1 eine Schnittansicht nach der Linie I-I in Fig» 2 des Ringkolbens,1 shows a sectional view along the line I-I in FIG. 2 of the annular piston,
Fig.. 2 eine Draufsicht auf den Ringkolben mit Hülsen, die über schrägstehende Stege gegen die zylindrische Kolbenwand abgestütztsind,2 shows a plan view of the annular piston with sleeves which are supported against the cylindrical piston wall via inclined webs,
Fig.. 3 eine Schnittansicht nach der Linie III-III in Fig. 4 eines Ringkolbens undFig. 3 is a sectional view along the line III-III in Fig. 4 of an annular piston and
Fig. 4 eine Draufsicht auf einen Ringkolben mit Hülsen, die über radial stehende Stege gegen die Kolbenwand a " gestützt sind,4 is a plan view of an annular piston with sleeves which are supported against the piston wall a ″ via radially standing webs,
Fig, 5 eine Schnittansicht nach der Linie. V—V in Fig». 6 eines Ringkolbens undFig. 5 is a sectional view along the line. V-V in Fig ». 6 an annular piston and
Fig. 6 eine Draufsicht auf einen Ringkolben, dessen Hülsen an der zylindrischen Kolbenwand anliegen»6 is a plan view of an annular piston, the sleeves of which bear against the cylindrical piston wall.
Die Fig» 1 bis 6 zeigen Ringkolben für Fährzeugkupplun- gen, die ölhydraulisch betätigt werden, -Im ausgekuppel— ten Zustand drücken die Schraubenfedern den Ringkolben in Ausgangsstellung» Zum Einkuppeln wird der Ringkolben, der über Kolbenringe gegen ein zylindrisches Gehäuse abgedichtet ist, gegen den Druck der Schrauben.:dem axial verschoben» Dabei drückt der Ringkolben mit seiner Druckfläche gegen die Scheiben der Kupplung» FIGS. 1 to 6 show ring pistons for vehicle clutches that are actuated by oil hydraulics. In the disengaged state, the coil springs press the ring piston in the starting position. To engage, the ring piston, which is sealed against a cylindrical housing by piston rings, is pressed against the Pressure of the screws: axially displaced »The ring piston presses with its pressure surface against the disks of the clutch »
v Der in den Fig.. 1 und 2 dargestellte Ringkolben 1 hat eine zylindrische Kolbenwand 2 und einen dazu rechtwink¬ lig verlaufenden Kolbenboden 3» Der Ringkolben weist eins äußere Nut 4 und eine innere Nut 5 auf, in die jeweils ein Kolbenring eingesetzt wird. Zur Halterung derv The annular piston 1 shown in FIGS. 1 and 2 has a cylindrical piston wall 2 and a piston head 3 running at right angles thereto. The annular piston has an outer groove 4 and an inner groove 5, in each of which a piston ring is inserted. To hold the
Schraubenfedern dienen Hülsen. 6, die konzentrisch zur Achse 7 der Kupplung auf dem Kolbenboden 3 angeord¬ net sind. Die Hülsen 6 sind einstückig mit dem Kolben— boden 3 verbunden und sind gegeneinander über zirkulär beziehungsweise konzentrisch zur Achse 7 verlaufende Stege 9 miteinander verbunden». Ferner sind die Hülsen 6 über jeweils 2 gleich lange, im Winkel von 75° zueinan¬ der stehende Stege 10 und 11 gegen die Kolbenwand 2 ab¬ gestützt. Dadurch, daß die Hülsen 6 über Stege 9, 10 und 11 miteinander und mit der Kolbenwand 2 einstückig ver¬ bunden sind, hat der Ringkolben eine sehr hohe Form- steifigkeit, und die Hülsen können sehr große Zentripe- dalkräfte aufbringen, um die Schraubenfedern zu halten und zu führen» Wie Fig» 1 zeigt, befindet sich an der Rückseite des Ringkolbens eine Anlagefläche 15 und an der Vorderseite des Ringkolbens eine ringförmige Druck¬ fläche 16» Der Ringkolben kann im Spritzgußverfahren aus glasfaserverstärktem Polyamid so maßgenau hergestellt werden, daß lediglich die Nuten 4 und 5 für die Kolben- ringe und gegebenenfalls die Anlagefläche 15 und die Druckfläche 16 mechanisch zu bearbeiten sind» Die Wand¬ stärke der Hülsen 6 kann unter 1 mm liegen* Da die Wände dieser Hülsen 6 über die Stege 9, 10 und '11 miteinander sowie mit dem Kolbenboden 3 und der Kolbenwand 2 verbun— den sind, wird ein sehr günstiger Materialfluß beim Spritzen der Kunststoffteile sichergestellt»Coil springs serve sleeves. 6, which are arranged concentrically to the axis 7 of the clutch on the piston crown 3. The sleeves 6 are connected in one piece to the piston crown 3 and are connected to one another by means of webs 9 running circularly or concentrically to the axis 7. Furthermore, the sleeves 6 are supported against the piston wall 2 via 2 webs 10 and 11 of equal length, which are at an angle of 75 ° to each other. Because the sleeves 6 are integrally connected to one another and to the piston wall 2 by means of webs 9, 10 and 11, the annular piston has a very high degree of rigidity, and the sleeves can exert very large centrifugal forces in order to close the coil springs hold and guide »As shown in Fig. 1, there is a contact surface 15 on the rear of the annular piston and an annular pressure surface 16 on the front of the annular piston grooves 4 and 5 rings for the piston and, if appropriate, the bearing surface 15 and the pressure surface 16 mechanically treated are "the Wand¬ strength of the sleeves 6 may be less than 1 mm * Since the walls of the sleeves 6 via the webs 9, 10 and ' 11 are connected to each other as well as to the piston crown 3 and the piston wall 2, a very favorable material flow becomes when the plastic parts are sprayed created »
Bei dem Ausführungsbeispiel nach den Fig» 3 und 4 sind die Hülsen 6J des Ringkolbens 11 über radial stehende Stege 12 gegen die Innenseite 14 der im wesentlichenIn the embodiment of Figs' 3 and 4, the sleeves 6 J of the annular piston 1 1 via radial webs 12 standing against the inner side 14 of the substantially
O zylindrischen Kolbenwand 2 abgestützt» Ebenso wie bei dem Ausführungsbeispiel .nach den Fig. 1 und 2 sind die Hülsen 6 ' untereinander über zirkulär verlaufende Stege 9 ' gegeneinander abgestützt»O cylindrical piston wall 2 supported "Just as in the embodiment. According to FIGS. 1 and 2, the sleeves 6 'are mutually supported via circular webs 9'"
Im Zentrum jeder Hülse 6J ist ein kurzer Bolzen 13 ange¬ ordnet, der zusätzlich die in die Hülse 61 einzustecken¬ de Schraubenfeder an einem Ende festhält»A short bolt 13 is arranged in the center of each sleeve 6 J and additionally holds the helical spring to be inserted into the sleeve 6 1 at one end.
Bei dem Ausführungsbeispiel nach den Fig. 5 und 6 sind die Hülsen 6" des Ringkolbens 1" dadurch radial gegen die Innenseite 14 der zylindrischen Kolbenwand 2 abge¬ stützt, daß sie unmittelbar an dieser Kolbenwand an¬ liegen» Die zirkulare Abstützung der Hülsen 6" erfolgt - hier ebenfalls über kurze, konzentrisch zur Kupplungs¬ achse 7 verlaufende Stege 9"» 5 and 6, the sleeves 6 "of the annular piston 1" are supported radially against the inside 14 of the cylindrical piston wall 2 by lying directly against this piston wall. The circular support of the sleeves 6 " takes place - here also via short webs 9 "», which run concentrically to the coupling axis 7 "

Claims

P A T E N T A N S P R Ü C H E; PATENT CLAIMS;
1. Ringkolben für Mehrscheibenkupplung, der um die zu kuppelnde Achse (7) drehbar und gegen die Kraft von Schraubenfedern axial verschiebbar in der Kupplung ange¬ ordnet ist und der eine zylindrische Kolbenwand (2) und einen rechtwinklig dazu verlaufenden Kolbenboden (3) auf¬ weist und der mit zahlreichen, konzentrisch zur Achse (7) angeordneten, mit dem Kolbenboden (3) verbundenen, die Schraubenfedern axial führenden Halterungen versehen ist, d a d u r c h g e k e n n z e i c h n e t, daß der Ringkolben (1,1J,1") aus einem faserarmierten Kunststoff hergestellt ist und die Halterungen für die Schrauben— federn von einstückig angeformten, zylindrischen Hülsen- (6,6,,6n) gebildet sind, die radial gegen die äußere Kolbenwand (2) und zirkulär gegeneinander abgestützt sind..1. Ring piston for multi-disc clutch, which is rotatable about the axis to be coupled (7) and axially displaceable against the force of coil springs in the clutch and which has a cylindrical piston wall (2) and a piston crown (3) running at right angles to it has and which is provided with numerous concentric to the axis (7), connected to the piston head (3), the coil springs axially leading holders, characterized in that the annular piston (1.1 J , 1 ") is made of a fiber-reinforced plastic and the holders for the coil springs are formed from integrally molded cylindrical sleeves (6 , 6, 6, 6 n ) which are supported radially against the outer piston wall (2) and circularly against one another.
2.. Ringkolben nach Anspruch 1, dadurch gekennzeichnet, daß die konzentrisch zur Achse (7) angeordneten Hülsen (6,6J,6") ohne Abstand nebeneinander angeordnet sind»2. Ring piston according to claim 1, characterized in that the sleeves (6,6 J , 6 ") arranged concentrically to the axis (7) are arranged next to one another without a gap»
3» Ringkolben nach Anspruch 1, dadurch gekennzeichnet, daß die konzentrisch zur Achse (7) angeordneten Hülsen {6,61,6") über konzentrisch zur Achse (7) verlaufende Stege (9,9',9") miteinander verbunden sind.3 »ring piston according to claim 1, characterized in that the sleeves {6,6 1 , 6") arranged concentrically to the axis (7) are connected to one another via webs (9,9 ', 9 ") running concentrically to the axis (7) .
4. Ringkolben nach einem der Ansprüche 1 Tois 3, dadurch gekennzeichnet, daß die Hülsen (6n) die Kolbenwand. (2) an der Innenseite (14) tangieren.4. Annular piston according to one of claims 1 Tois 3, characterized in that the sleeves (6 n ) the piston wall. Tangent on the inside (14).
5. Ringkolben nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Hülsen (6,5. Ring piston according to one of claims 1 to 3, characterized in that the sleeves (6,
6J) über Stege (10,11 oder 12) gegen die Kolbenwand (2) abgestützt sind. 1 6, Ringkolben nach Anspruch 5, dadurch gekennzeichnet, daß jede Hülse (6J) über einen radial zur Achse (7) der Kupplung und radial zur Achse (8) der jeweiligen Hülse (6) verlaufenden Steg (12) gegen die Kolbenwand (2) ab—6 J ) are supported against the piston wall (2) via webs (10, 11 or 12). 1 6, ring piston according to claim 5, characterized in that each sleeve (6 J ) via a radially to the axis (7) of the coupling and radially to the axis (8) of the respective sleeve (6) extending web (12) against the piston wall ( 2) from—
5 gestützt ist.5 is supported.
7. Ringkolben nach Anspruch 5, dadurch gekennzeichnet, daß jede Hülse (6) über zwei gleich lange Stege (10,11) gegen die Kolbenwand (2) abgestützt ist, die im Winkel7. Ring piston according to claim 5, characterized in that each sleeve (6) is supported by two equally long webs (10, 11) against the piston wall (2), which is at an angle
10 von 60 bis 90° zueinander stehen und im wesentlichen radial zur Achse (8) der jeweiligen Hülse (6) verlaufen»10 are at 60 to 90 ° to each other and are essentially radial to the axis (8) of the respective sleeve (6) »
8. Ringkolben nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß im Zentrum jeder Hülse (61) am Kol-8. annular piston according to one of claims 1 to 7, characterized in that in the center of each sleeve (6 1 ) on the piston
15. benboden (2) ein kurzer Bolzen (13) angeformt ist»15 . benboden (2) a short bolt (13) is formed »
■ 9.. Ringkolben nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Ringkolben aus glasfaserver¬ stärktem Polyamid besteht» 20 ■ 9 .. ring piston according to one of claims 1 to 8, characterized in that the ring piston consists of glass fiber reinforced polyamide »20
2525
3030
5 5
EP19820902981 1981-10-08 1982-10-06 Annular piston for multidisk coupling Withdrawn EP0090823A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813139951 DE3139951A1 (en) 1981-10-08 1981-10-08 RING PISTON FOR MULTI-DISC CLUTCH
DE3139951 1981-10-08

Publications (1)

Publication Number Publication Date
EP0090823A1 true EP0090823A1 (en) 1983-10-12

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ID=6143639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820902981 Withdrawn EP0090823A1 (en) 1981-10-08 1982-10-06 Annular piston for multidisk coupling

Country Status (3)

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EP (1) EP0090823A1 (en)
DE (2) DE3139951A1 (en)
WO (1) WO1983001284A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD736260S1 (en) 2012-07-03 2015-08-11 Eaton Corporation Composite differential piston
USD735758S1 (en) 2014-10-13 2015-08-04 Eaton Corporation Composite differential plenum

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH288528A (en) * 1950-12-20 1953-01-31 Sueberkrueb Franz Multi-disc clutch.
US3072220A (en) * 1960-03-31 1963-01-08 Caterpillar Tractor Co Disc-type brake with vibration absorbing means
US3265167A (en) * 1964-07-10 1966-08-09 Goodyear Tire & Rubber Integral molded piston and lining for brakes and method for forming thereof
GB1520222A (en) * 1976-03-17 1978-08-02 Hooker Chemicals Plastics Corp Fluted core disc brake piston

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8301284A1 *

Also Published As

Publication number Publication date
DE8129402U1 (en) 1983-08-11
WO1983001284A1 (en) 1983-04-14
DE3139951A1 (en) 1983-04-28

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