EP0264547B1 - Sealed cover, especially for crank and gear housings for motor vehicles - Google Patents

Sealed cover, especially for crank and gear housings for motor vehicles Download PDF

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Publication number
EP0264547B1
EP0264547B1 EP87109840A EP87109840A EP0264547B1 EP 0264547 B1 EP0264547 B1 EP 0264547B1 EP 87109840 A EP87109840 A EP 87109840A EP 87109840 A EP87109840 A EP 87109840A EP 0264547 B1 EP0264547 B1 EP 0264547B1
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EP
European Patent Office
Prior art keywords
sealing
cover
flange surface
radial
housing
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.)
Expired - Lifetime
Application number
EP87109840A
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German (de)
French (fr)
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EP0264547A2 (en
EP0264547A3 (en
Inventor
Hans Dipl.-Ing. Deuring
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Cessione goetze Elastomere GmbH
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Goetze GmbH
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Publication of EP0264547A2 publication Critical patent/EP0264547A2/en
Publication of EP0264547A3 publication Critical patent/EP0264547A3/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00Casings, e.g. crankcases or frames
    • F02F7/0065Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F11/00Arrangements of sealings in combustion engines 
    • F02F11/007Arrangements of sealings in combustion engines  involving rotary applications

Definitions

  • the invention relates on the one hand to a housing closure cover with a shaft extending through the cover in the installed state with a dynamically acting seal for the shaft and a statically acting seal for the cover flange surface, the dynamic seal consisting of at least one, possibly spring-loaded, elastic sealing lip vulcanized onto the cover and the static seal consists of axially protruding, elastic sealing strips vulcanized into recesses in the sealing flange surface.
  • the invention on the other hand relates to a housing cover with a shaft extending in the installed state through the cover for crankshaft housings with an oil pan that can be flanged from below, with a dynamic seal for the shaft and two statically sealed flange surfaces that meet at an angle of usually 90 °, one of which is radial to tight connection with the crankshaft housing and the other axially extends to the tight connection with the oil pan, the dynamic seal consisting of at least one spring-loaded, elastic, vulcanized sealing lip, while for the static sealing of both flange surfaces axially or radially from the Flange surfaces projecting sealing strips are vulcanized.
  • crankshaft seal for internal combustion engines.
  • a sealing ring is pressed into a pressed sheet metal cover and is used exclusively to seal a shaft that is guided through the housing.
  • the crankshaft seal consists of several separate components, which involve a lot of assembly work when assembled.
  • additional measures must be taken for static sealing.
  • housing closure covers have already been created which have a combined seal, namely for the static as well as for the dynamic sealing point.
  • DE-PS 33 05 765 discloses such a housing cover.
  • This housing cover consists of an aluminum die-cast body, on the inner circumference of which an elastic sealing lip is arranged for sealing the continuous crankshaft, while for sealing the radial flange surface to be connected to the crankshaft housing and the axial flange surface to be connected to the oil pan, sealing limits in Form of elastic sealing strips vulcanized into grooves in the flange surfaces are provided. Additional radial and axial grooves with sealing strips provide a connection to the dynamic one Sealing lip produced, whereby the vulcanization of the sealing elements is particularly easy, especially in the transfer or compression molding process.
  • the task of the new invention is now to simplify the base body of the closure cover, in particular to minimize its processing outlay.
  • the cover consists of a profile-drawn sheet metal body with an essentially cup-shaped cross-section and has three radial surfaces arranged axially offset from one another, the bottom surface of the sheet metal body being the radial flange surface for connection to the lockable housing and the second, offset in stages Radial surface for receiving the sealing strips and the third radial surface for connecting the dynamic sealing lip.
  • grooves are no longer required to be milled in to accommodate the sealing strips.
  • the central radial surface which can also be formed when the tin pot is pulled, is used to hold and fasten the sealing strips. Due to the stepped design of the tin pot base, the incompressible material of the sealing strip can also move radially in the installed state.
  • the cover is drawn from a sheet metal body with an approximately cup-shaped cross-section, the radial flange surface being in the region of the inner circumference and the radial flange being in the region of the transition point Nsch measurements to the axial flange surface of the tin pot is profiled such that a recessed there is an additional area for receiving or connecting the sealing strips for the static sealing
  • This third, recessed radial flange surface thus allows in a simple manner the known connection of an uninterrupted sealing strip running in both planes with an angular configuration in the region of the radial and axial flange surfaces meeting at 90 °.
  • the graded profiling of the sheet metal body cross section contributes to a substantial stiffening of the same, so that it can be produced from relatively thin sheet metal and is thus much lighter in the finished state than the previously known aluminum die-cast body.
  • the sealing strips are vulcanized essentially in the transition region of the rounded edges of the recessed surface of the tin pot.
  • the rounding of the edges resulting from the pulling of the sheet metal body offers a relatively large base area for connecting the sealing strips, which should be made relatively narrow with their axially or radially projecting area and with a rectangular cross section, which is conducive to the sealing function.
  • sealing strip running parallel to the axial flange surface emerges at an acute angle to the radial or axial flange surface.
  • the housing closure cover shown in FIGS. 1 to 4 serves to seal a crankshaft housing of a motor vehicle engine with an oil pan that can be flanged from below.
  • the housing cover is shown in its commercial form.
  • the housing cover consists of a pot-shaped sheet metal body (1) which, to seal the crankshaft (not shown) that passes through when installed, has a dynamically loaded sealing ring (2) made of elastomer material and statically acting sealing strips (3 and 4), also made of elastomer material , which merge into one another.
  • the sheet metal body has three radial flange surfaces, the sealing ring (2) being attached to the flange surface (5), while the sealing strips (3 and 4) are vulcanized in the area of the flange surface (7) that is axially recessed relative to the flange surface (6).
  • the latter are connected to the sheet metal body with a relatively wide base area in the rounded sheet metal body region between the radial faces (6 and 7) and extend axially with a relatively narrow web (8) which emerges from the flange face (6).
  • the sheet metal body (1) with the flange surface (6) is braced against the (not shown) crankshaft housing with the aid of screws which can be inserted through the holes (9).
  • This flange connection is sealed by means of the sealing strip (3), in particular its axially protruding web (8).
  • the sealing strip (4) is used to seal the oil pan (not shown) which can be screwed against the crankshaft housing from below, which - as can be seen in FIG. 2 - at an acute angle both from the radial flange surface (6) and also emerges from the axial flange surface (10).
  • the oil pan (not shown) which can be screwed against the crankshaft housing from below, which - as can be seen in FIG. 2 - at an acute angle both from the radial flange surface (6) and also emerges from the axial flange surface (10).
  • two nuts (11) are welded into the cover, see Figure 1.
  • the holes (12) for receiving centering pins must be pointed out.
  • FIG. 5 shows a simplified, ring-shaped housing closure cover made of a sheet metal body (1 '), the sealing strip (3') being profiled in the area of its surface with two concentric and ring-shaped beads (13, 14).

Description

Die Erfindung betrifft einerseits einen Gehäuseverschlußdeckel mit einer im Einbauzustand durch den Deckel sich erstreckenden Welle mit einer dynamisch wirkenden Dichtung für die Welle und einer statisch wirkenden Dichtung für die Deckelflanschfläche, wobei die dynamische Dichtung aus mindestens einer an dem Deckel anvulkanisierten, gegebenenfalls federbelasteten, elastischen Dichtlippe und die statische Dichtung aus in Ausnehmungen der Dichtflanschfläche einvulkanisierten, axial hervorstehenden, elastischen Dichtstreifen besteht. Die Erfindung betrifft andererseits einen Gehäuseverschlußdeckel mit einer im Einbauzustand durch den Deckel sich erstreckenden Welle für Kurbelwellengehäuse mit von unten anflanschbarer Ölwanne, mit einer dynamischen Dichtung für die Welle sowie zwei unter einem Winkel von üblicherweise 90° aufeinandertreffenden, statisch abzudichtenden Flanschflächen, deren eine radial zur dichten Verbindung mit dem Kurbelwellengehäuse und deren andere axial zur dichten Verbindung mit der Ölwanne sich erstreckt, wobei die dynamische Dichtung aus mindestens einer gegebenenfalls federbelasteten, elastischen, anvulkanisierten Dichtlippe besteht, während für die statische Abdichtung beider Flanschflächen axial beziehungsweise radial aus den Flanschflächen hervorstehende Dichtstreifen anvulkanisiert sind.The invention relates on the one hand to a housing closure cover with a shaft extending through the cover in the installed state with a dynamically acting seal for the shaft and a statically acting seal for the cover flange surface, the dynamic seal consisting of at least one, possibly spring-loaded, elastic sealing lip vulcanized onto the cover and the static seal consists of axially protruding, elastic sealing strips vulcanized into recesses in the sealing flange surface. The invention on the other hand relates to a housing cover with a shaft extending in the installed state through the cover for crankshaft housings with an oil pan that can be flanged from below, with a dynamic seal for the shaft and two statically sealed flange surfaces that meet at an angle of usually 90 °, one of which is radial to tight connection with the crankshaft housing and the other axially extends to the tight connection with the oil pan, the dynamic seal consisting of at least one spring-loaded, elastic, vulcanized sealing lip, while for the static sealing of both flange surfaces axially or radially from the Flange surfaces projecting sealing strips are vulcanized.

Die DE-C-720 953 offenbart eine Kurbelwellendichtung für Brennkraftmaschinen. In einem aus Blech gepreßten Deckel ist ein Dichtungsring eingepreßt, der ausschließlich zur Abdichtung einer durch das Gehäuse geführten Welle dient. Die Kurbelwellendichtung besteht aus mehreren separaten Bauteilen, die beim Zusammenfügen einen hohen Montageaufwand mit sich bringen. Darüber hinaus müssen zur statischen Abdichtung zusätzliche Maßnahmen getroffen werden. Um diese Nachteile zu beheben, wurden bereits Gehäuseverschlußdeckel geschaffen, die eine kombinierte Abdichtung, nämlich für die statische als auch für die dynamische Dichtstelle, aufweisen.DE-C-720 953 discloses a crankshaft seal for internal combustion engines. A sealing ring is pressed into a pressed sheet metal cover and is used exclusively to seal a shaft that is guided through the housing. The crankshaft seal consists of several separate components, which involve a lot of assembly work when assembled. In addition, additional measures must be taken for static sealing. In order to remedy these disadvantages, housing closure covers have already been created which have a combined seal, namely for the static as well as for the dynamic sealing point.

Die DE-PS 33 05 765 offenbart einen solchen Gehäuseverschlußdeckel. Dieser Gehäuseverschlußdeckel besteht aus einem Aluminium-Druckguß-Körper, an dessen innerem Umfang eine elastische Dichtlippe zur Abdichtung der durchgehenden Kurbelwelle angeordnet ist, während zur Abdichtung der radialen, mit dem Kurbelwellengehäuse zu verbindenden Flanschfläche und der axialen, mit der Ölwanne zu verbindenden Flanschfläche Dichtgrenzen in Form von in Nuten der Flanschflächen einvulkanisierten elastischen Dichtstreifen vorgesehen sind. Durch zusätzliche radial und axial verlaufende Nuten mit Dichtstreifen ist dabei eine Verbindung zur dynamisch wirkenden Dichtlippe hergestellt, wodurch die Vulkanisation der Dichtelemente insbesondere Im Transfer- oder Compression-Moulding-Verfahren besonders einfach ist.DE-PS 33 05 765 discloses such a housing cover. This housing cover consists of an aluminum die-cast body, on the inner circumference of which an elastic sealing lip is arranged for sealing the continuous crankshaft, while for sealing the radial flange surface to be connected to the crankshaft housing and the axial flange surface to be connected to the oil pan, sealing limits in Form of elastic sealing strips vulcanized into grooves in the flange surfaces are provided. Additional radial and axial grooves with sealing strips provide a connection to the dynamic one Sealing lip produced, whereby the vulcanization of the sealing elements is particularly easy, especially in the transfer or compression molding process.

Im Rahmen der Weiterentwicklung der vorbekannten Lösung liegt der neuen Erfindung nunmehr die Aufgabe zugrunde, den Grundkörper des Verschlußdeckels zu vereinfachen, insbesondere dessen Bearbeitungsaufwand zu minimieren.As part of the further development of the previously known solution, the task of the new invention is now to simplify the base body of the closure cover, in particular to minimize its processing outlay.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Deckel aus einem profilgezogenen Blechkörper mit im wesentlichen topfförmigem Querschnitt besteht und drei axial zueinander versetzt angeordnete Radialflächen aufweist, wobei die Bodenfläche des Blechkörpers die radiale Flanschfläche zur Verbindung mit dem verschließbaren Gehäuse, die stufenförmig dagegen versetzt angeordnete zweite Radialfläche zur Aufnahme der Dichtstreifen und die dritte Radialfläche zur Anbindung der dynamischen Dichtlippe dient. Durch die Ausbildung des Gehäuseverschlußdeckels als gezogenes Blechteil mit drei axial zueinander versetzt angeordneten Radialflächen entfällt eine mechanische Nachbearbeitung. In einem Arbeitsgang können sowohl die elastische Dichtlippe als auch die Dichtstreifen für die statische Abdichtung im Vulkanisierwerkzeug angeformt werden.This object is achieved in that the cover consists of a profile-drawn sheet metal body with an essentially cup-shaped cross-section and has three radial surfaces arranged axially offset from one another, the bottom surface of the sheet metal body being the radial flange surface for connection to the lockable housing and the second, offset in stages Radial surface for receiving the sealing strips and the third radial surface for connecting the dynamic sealing lip. By designing the housing closure cover as a drawn sheet metal part with three radial surfaces arranged axially offset from one another, mechanical reworking is not necessary. Both the elastic sealing lip and the sealing strips for static sealing can be molded in the vulcanizing tool in one operation.

Gegenüber dem bisher verwendeten Aluminium-Druckguß-Körper brauchen keine Nuten mehr für die Aufnahme der Dichtstreifen eingefräst zu werden. Die zusätzlich beim Ziehen des Blechtopfes anformbare mittlere Radialfläche dient zur Aufnahme und Befestigung der Dichtstreifen. Durch die stufenförmige Ausbildung des Blechtopfbodens kann das inkompressible Material des Dichtstreifens im Einbauzustand auch radial ausweichen.Compared to the previously used die-cast aluminum body, grooves are no longer required to be milled in to accommodate the sealing strips. The central radial surface, which can also be formed when the tin pot is pulled, is used to hold and fasten the sealing strips. Due to the stepped design of the tin pot base, the incompressible material of the sealing strip can also move radially in the installed state.

Bei einem Gehäuseverschlußdeckel mit einer durch den Deckel sich erstreckender Welle für Kurbelwellengehäuse mit von unten angeflanschter Ölwanne, mit einer dynamischen Dichtung für die Welle sowie zwei unter einem Winkel von üblicherweise 90° aufeinandertreffenden statisch abzudichtenden Flanschflächen, deren eine Flanschfläche radial zur dichten Verbindung mit dem Kurbelwellengehäuse und deren andere axial zur dichten Verbindung mit der Ölwanne sich erstreckt, wobei die dynamische Dichtung aus mindestens einer gegebenenfalls federbelasteten, elastischen Dichtlippe besteht, während für die statische Abdichtung beider Flanschflächen axial beziehungsweise radial aus den Flanschflächen hervortretende Dichtstreifen anvulkanisiert sind, wird nach einem weiteren Gedanken der Erfindung der Deckel aus einem Blechkörper mit etwa topfförmigem Querschnitt gezogen, wobei im Bereich des Innenumfanges der radialen Flanschfläche und im Bereich der Übergangsstelle der radialen Flanschfläche zur axialen Flanschfläche der Blechtopf derart abgestuft profiliert ist, daß eine zurückgesetzte weitere Fläche zur Aufnahme beziehungsweise Anbindung der Dichtstreifen für die statische Abdichtung beider Flanschflächen vorhanden ist. Diese dritte, zurückgesetzte Radialflanschfläche gestattet so auf einfache Weise die an sich bekannte Anbindung eines in beiden Ebenen verlaufenden, ununterbrochenen Dichtstreifens mit eckiger Ausbildung im Bereich der unter 90° zusammentreffenden radialen und axialen Flanschflächen. Darüber hinaus trägt die abgestufte Profilierung des Blechkörperquerschnittes zu einer wesentlichen Versteifung desselben bei, so daß dieser aus relativ dünnem Blech hergestellt werden kann und somit im fertigen Zustand wesentlich leichter als der vorbekannte Aluminium-Druckguß-Körper ist.In the case of a housing cover with a shaft extending through the cover for crankshaft housings with an oil pan flanged from below, with a dynamic seal for the shaft and two statically sealed flange surfaces which meet at an angle of usually 90 °, one flange surface of which radially for tight connection to the crankcase and the other of which extends axially for a tight connection to the oil pan, the dynamic seal consisting of at least one spring-loaded, elastic sealing lip, if necessary, while sealing strips protruding axially or radially from the flange surfaces are vulcanized for the static sealing of both flange surfaces According to the invention, the cover is drawn from a sheet metal body with an approximately cup-shaped cross-section, the radial flange surface being in the region of the inner circumference and the radial flange being in the region of the transition point Nschfläche to the axial flange surface of the tin pot is profiled such that a recessed there is an additional area for receiving or connecting the sealing strips for the static sealing of both flange surfaces. This third, recessed radial flange surface thus allows in a simple manner the known connection of an uninterrupted sealing strip running in both planes with an angular configuration in the region of the radial and axial flange surfaces meeting at 90 °. In addition, the graded profiling of the sheet metal body cross section contributes to a substantial stiffening of the same, so that it can be produced from relatively thin sheet metal and is thus much lighter in the finished state than the previously known aluminum die-cast body.

Im Rahmen der weiteren Ausgestaltung der Erfindung wird vorgeschlagen, daß die Dichtstreifen im wesentlichen im übergangsbereich der abgerundeten Kanten der zurückgesetzt ausgebildeten Fläche des Blechtopfes anvulkanisiert sind. Die durch das Ziehen des Blechkörpers sich ergebenden Abrundungen der Kanten bieten eine relativ große Basisfläche für das Anbinden der Dichtstreifen, die mit ihrem axial beziehungsweise radial hervorstehenden Bereich relativ schmal und mit rechteckigem Querschnitt ausgebildet werden sollten, was der Dichtfunktion förderlich ist.In the further embodiment of the invention it is proposed that the sealing strips are vulcanized essentially in the transition region of the rounded edges of the recessed surface of the tin pot. The rounding of the edges resulting from the pulling of the sheet metal body offers a relatively large base area for connecting the sealing strips, which should be made relatively narrow with their axially or radially projecting area and with a rectangular cross section, which is conducive to the sealing function.

Weiterhin wird vorgeschlagen, daß der geradlinig zur Axialflanschfläche parallel verlaufende Dichtstreifen unter einem spitzen Winkel zur radialen beziehungsweise axialen Flanschfläche aus diesen hervortritt.It is also proposed that the sealing strip running parallel to the axial flange surface emerges at an acute angle to the radial or axial flange surface.

Denkbar ist es auch, die Dichtstreifen-Oberfläche derart zu profilieren, daß eine Mehrzahl von parallel zueinander verlaufenden Dichtwülsten entsteht.It is also conceivable to profile the sealing strip surface in such a way that a plurality of sealing beads running parallel to one another is produced.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Es zeigen:

  • Figur 1 eine Ansicht eines Gehäuseverschlußdeckels
  • Figur 2 einen Schnitt II-II gemäß Angabe in Figur 1
  • Figur 3 einen Teilschnitt III-III gemäß Angabe in Figur 1
  • Figur 4 eine Teilansicht IV gemäß Angabe in Figur 1
  • Figur 5 einen Teilschnitt durch einen ringförmigen Gehäuseverschlußdeckel
An embodiment of the invention is shown in the drawing. Show it:
  • Figure 1 is a view of a housing cover
  • Figure 2 shows a section II-II as shown in Figure 1
  • 3 shows a partial section III-III as indicated in FIG. 1
  • FIG. 4 shows a partial view IV as indicated in FIG. 1
  • Figure 5 shows a partial section through an annular housing cover

Der in Figur 1 bis 4 dargestellte Gehäuseverschlußdeckel dient zur Abdichtung eines Kurbelwellengehäuses eines Kraftfahrzeugmotors mit von unten anflanschbarer Ölwanne. Zum besseren Verständnis ist nur der Gehäuseverschlußdeckel in seiner handelsüblichen Form dargestellt.The housing closure cover shown in FIGS. 1 to 4 serves to seal a crankshaft housing of a motor vehicle engine with an oil pan that can be flanged from below. For a better understanding only the housing cover is shown in its commercial form.

Der Gehäuseverschlußdeckel besteht aus einem topfförmig gezogenen Blechkörper (1), der zur Abdichtung der im Einbauzustand hindurchgehenden Kurbelwelle (nicht dargestellt) einen dynamisch belasteten Dichtungsring (2) aus Elastomer-Werkstoff sowie statisch wirkenden Dichtstreifen (3 und 4), ebenfalls aus Elastomer-Werkstoff, die einstückig ineinander übergehen, aufweist. Der Blechkörper weist drei radiale Flanschflächen auf, wobei an die Flanschfläche (5) der Dichtungsring (2), während im Bereich der gegenüber der Flanschfläche (6) axial zurückgesetzten Flanschfläche (7) die Dichtstreifen (3 und 4) anvulkanisiert sind. Letztere sind mit einer relativ breiten Grundfläche im abgerundeten Blechkörperbereich zwischen den Radialflächen (6 und 7) mit dem Blechkörper verbunden und erstrecken sich axial mit einem relativ schmalen Steg (8), der aus der Flanschfläche (6) hervortritt. Im Einbauzustand wird der Blechkörper (1) mit der Flanschfläche (6) gegen das (nicht dargestellt) Kurbelwellengehäuse mit Hilfe von durch die Löcher (9) steckbaren Schrauben verspannt. Dabei wird diese Flanschverbindung mittels des Dichtstreifens (3), insbesondere dessen axial hervorstehenden Steges (8), abgedichtet.The housing cover consists of a pot-shaped sheet metal body (1) which, to seal the crankshaft (not shown) that passes through when installed, has a dynamically loaded sealing ring (2) made of elastomer material and statically acting sealing strips (3 and 4), also made of elastomer material , which merge into one another. The sheet metal body has three radial flange surfaces, the sealing ring (2) being attached to the flange surface (5), while the sealing strips (3 and 4) are vulcanized in the area of the flange surface (7) that is axially recessed relative to the flange surface (6). The latter are connected to the sheet metal body with a relatively wide base area in the rounded sheet metal body region between the radial faces (6 and 7) and extend axially with a relatively narrow web (8) which emerges from the flange face (6). In the installed state, the sheet metal body (1) with the flange surface (6) is braced against the (not shown) crankshaft housing with the aid of screws which can be inserted through the holes (9). This flange connection is sealed by means of the sealing strip (3), in particular its axially protruding web (8).

Zur Abdichtung der von unten gegen das Kurbelwellengehäuse verschraubbaren Ölwanne (nicht dargestellt) dient der Dichtstreifen (4), welcher - wie aus Figur 2 ersichtlich - unter einem spitzen Winkel sowohl aus der radialen Flanschfläche (6) als auch aus der axialen Flanschfläche (10) hervortritt. Für die Verschraubung der Ölwanne sind im Verschlußdeckel zwei Muttern (11) eingeschweißt, vergleiche Figur 1. Schließlich ist auf die Bohrungen (12) zur Aufnahme von Zentrierstiften hinzuweisen.The sealing strip (4) is used to seal the oil pan (not shown) which can be screwed against the crankshaft housing from below, which - as can be seen in FIG. 2 - at an acute angle both from the radial flange surface (6) and also emerges from the axial flange surface (10). For the screwing of the oil pan, two nuts (11) are welded into the cover, see Figure 1. Finally, the holes (12) for receiving centering pins must be pointed out.

In Figur 5 ist ein vereinfacht ausgebildeter, ringförmiger Gehäuseverschlußdeckel aus einem Blechkörper (1') dargestellt, wobei der Dichtstreifen (3') im Bereich seiner Oberfläche mit zwei konzentrisch und ringförmig zueinander verlaufenden Wülsten (13 14) profiliert ist.FIG. 5 shows a simplified, ring-shaped housing closure cover made of a sheet metal body (1 '), the sealing strip (3') being profiled in the area of its surface with two concentric and ring-shaped beads (13, 14).

Claims (6)

  1. Housing sealing cover with a shaft extending through the cover in the assembled state, with a dynamically acting seal for the shaft and a statically acting seal for the cover flange surface, wherein the dynamic seal consists of at least one elastic sealing lip (2) vulcanised onto the cover and spring loaded if necessary, and the static seal consists of axially projecting elastic sealing strips (3,4) vulcanised into recesses in the sealing flange surface, characterised in that the cover consists of a profile-drawn sheet metal body (1) of essentially cup-shaped cross-section and comprises three radial surfaces (5,6,7) axially offset from each other, wherein the bottom surface of the metal body (1), the radial flange surface (6) serves for connection to the closable housing, the second radial surface (7) which is offset from the latter in step fashion serves for receiving the sealing strips (3,4) and the third radial surface serves for connection of the dynamic sealing lip (2).
  2. Housing sealing cover with a shaft extending through the cover in the assembled state, for a crankcase with an oil sump which can be flanged on from below, with a dynamic seal for the shaft as well as two flange surfaces (6,10) which usually impinge on each other at an angle of 90° and are to be sealed statically and of which one extends radically for sealing-tight connection to the crankcase and the other extends axially for sealing-tight connection to the oil sump, wherein the dynamic seal consists of at least one, optionally spring-loaded, elastic sealing lip (2) attached by vulcanisation, while for static sealing of the two flange surfaces (6,10), sealing strips (3,4) which project axially or radically out of the flange surfaces (6,10) are attached by vulcanisation, characterised in that the cover consists of a sheet metal body (1) drawn essentially in a cup shape which, in the region of the inner periphery of the radial flange surface (6) and in the region of the junction between the radial flange surface (6) and the axial flange surface (10), is axially profiled in step fashion in such a way that another set-back surface (7) is provided for receiving or connecting the sealing strips (3,4) for sealing of the two flange surfaces (6,10).
  3. Housing sealing cover according to claim 1 or 2, characterised in that the sealing strips (3,4) are attached by vulcanisation essentially in the junction zone of the rounded edges of the flange surface (7) which is set back from the flange surface (6).
  4. Housing sealing cover according to claim 3, characterised in that the sealing strip (3) comprises an approximately rectangular cross-sectional profile (8) protruding axially beyond the radial flange surface (6).
  5. Housing sealing cover according to claim 3, characterised in that the sealing strip (4) extending parallel and rectilinearly to the axial flange surface (10) protrudes from the axial flange surface (10) at an acute angle thereto.
  6. Housing sealing cover according to claims 1 to 3, characterised in that the sealing strip (3') comprises a multi-profiled surface.
EP87109840A 1986-10-11 1987-07-08 Sealed cover, especially for crank and gear housings for motor vehicles Expired - Lifetime EP0264547B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863634735 DE3634735A1 (en) 1986-10-11 1986-10-11 LOCKING CAP, ESPECIALLY FOR CRANKSHAFT AND GEARBOX HOUSING IN MOTOR VEHICLES
DE3634735 1986-10-11

Publications (3)

Publication Number Publication Date
EP0264547A2 EP0264547A2 (en) 1988-04-27
EP0264547A3 EP0264547A3 (en) 1989-03-15
EP0264547B1 true EP0264547B1 (en) 1991-04-03

Family

ID=6311572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109840A Expired - Lifetime EP0264547B1 (en) 1986-10-11 1987-07-08 Sealed cover, especially for crank and gear housings for motor vehicles

Country Status (5)

Country Link
US (1) US4928980A (en)
EP (1) EP0264547B1 (en)
JP (1) JPS63243573A (en)
DE (1) DE3634735A1 (en)
ES (1) ES2021639B3 (en)

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US5152538A (en) * 1988-03-21 1992-10-06 Chicago Rawhide Manufacturing Company, Inc. Composite seal assembly
JPH0738768Y2 (en) * 1989-10-17 1995-09-06 エヌオーケー株式会社 Sealing device
DE4015409C1 (en) * 1990-05-14 1991-06-13 Audi Ag, 8070 Ingolstadt, De
DE4016020C2 (en) * 1990-05-18 1994-06-16 Goetze Ag Housing cover
EP0503143B2 (en) * 1991-03-11 2000-04-05 CR Elastomere GmbH Casing closing cover
DE4134316C3 (en) * 1991-03-11 2000-01-13 Cr Elastomere Gmbh Housing cover
DE4107783C2 (en) * 1991-03-11 1999-05-27 Cr Elastomere Gmbh Housing cover
DE4112937A1 (en) * 1991-04-20 1992-10-22 Goetze Ag HOUSING LID
DE4115922A1 (en) * 1991-05-16 1992-11-19 Freudenberg Carl Fa CRANKSHAFT GASKET FOR AN INTERNAL COMBUSTION ENGINE
DE4127067C1 (en) 1991-08-16 1993-03-25 Goetze Ag, 5093 Burscheid, De
DE4136890C2 (en) * 1991-11-09 1995-08-03 Goetze Elastomere Gmbh Housing cover
BR9201708A (en) * 1992-04-29 1993-11-03 Sabo Ind & Comercio Ltda INTEGRATED SEALING SYSTEM
DE4216568C2 (en) * 1992-05-20 1995-02-16 Freudenberg Carl Fa Crankshaft seal for an internal combustion engine
DE4217131C1 (en) * 1992-05-23 1993-12-16 Goetze Ag Housing cover with shaft seal - has fixing devices positively secured in holes before installation and released on engagement
US5228420A (en) * 1992-09-25 1993-07-20 Tsuchiya Mfg. Co., Ltd. Valve rocker cover
US5263444A (en) * 1993-02-16 1993-11-23 General Motors Corporation Seal, and sealed T-joint
DE59302516D1 (en) * 1993-03-12 1996-06-13 Bruss Dichtungstechnik Method of making a shaft seal
EP0615085B2 (en) * 1993-03-12 2000-01-26 Dichtungstechnik G. Bruss GmbH & Co. KG Method for making a shaft seal
EP0615084B1 (en) * 1993-03-12 1995-10-11 Dichtungstechnik G. Bruss GmbH & Co. KG Method for manufacturing a seal
JP3177086B2 (en) * 1994-02-07 2001-06-18 エヌオーケー株式会社 Sealing device
DE4426910C2 (en) 1994-07-29 1999-02-04 Cr Elastomere Gmbh Housing cover
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US5603297A (en) * 1996-01-18 1997-02-18 Acoust-A-Fiber Research And Development, Inc. Heat Shield
DE19606532C2 (en) 1996-02-22 1998-06-18 Cr Elastomere Gmbh Closure cover, in particular for engine and gearbox housings in motor vehicles
DE19606531C2 (en) * 1996-02-22 1998-10-01 Cr Elastomere Gmbh Closure cover made of sheet metal for crankshaft housings in motor vehicles
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Also Published As

Publication number Publication date
DE3634735A1 (en) 1988-04-21
EP0264547A2 (en) 1988-04-27
ES2021639B3 (en) 1991-11-16
DE3634735C2 (en) 1989-06-22
JPS63243573A (en) 1988-10-11
US4928980A (en) 1990-05-29
EP0264547A3 (en) 1989-03-15

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