EP1593885B1 - Sealing ring - Google Patents

Sealing ring Download PDF

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Publication number
EP1593885B1
EP1593885B1 EP05009230A EP05009230A EP1593885B1 EP 1593885 B1 EP1593885 B1 EP 1593885B1 EP 05009230 A EP05009230 A EP 05009230A EP 05009230 A EP05009230 A EP 05009230A EP 1593885 B1 EP1593885 B1 EP 1593885B1
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EP
European Patent Office
Prior art keywords
sealing
sealing ring
support element
support
sealing elements
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.)
Not-in-force
Application number
EP05009230A
Other languages
German (de)
French (fr)
Other versions
EP1593885A1 (en
Inventor
Rolf Kotte
Rudolf Gibisch
Matthias Gruner
Hans Tremel
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.)
Bayerische Motoren Werke AG
Carl Freudenberg KG
Original Assignee
Bayerische Motoren Werke AG
Carl Freudenberg KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG, Carl Freudenberg KG filed Critical Bayerische Motoren Werke AG
Publication of EP1593885A1 publication Critical patent/EP1593885A1/en
Application granted granted Critical
Publication of EP1593885B1 publication Critical patent/EP1593885B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0276—Draining or purging

Definitions

  • the present invention relates to a sealing ring for particular provided on a flange sealing screws according to the preamble of claim 1.
  • a sealing ring which can be attached to a screw or a screw plug and has an annular sealing body is already based on the DE 39 03 780 known.
  • This sealing ring has a sealing body which has metallic inserts in pocket-shaped recesses on its radially outer peripheral surface, which are intended to limit the squeezing of the sealing ring when the sealing ring lying between the underside of a screw and a flange surface when tightening the screw plug with an axial acting compressive force is applied.
  • the arrangement of the deposits on the outer circumference of the sealing body is chosen so that the serving as a support body deposits are surrounded both on its upper side and on its underside of the elastomeric material of the sealing body.
  • the known sealing body is squeezed due to the undefined situation when tightening the screw plug, so that the situation may occur that the known sealing ring its original function, namely to produce a sealing surface, no longer able to exercise and also there is a risk that the under the locking screw when tightening the locking screw co-rotating known sealing ring from its formerly defined position between the screw plug and the flange surface and an uncontrolled and no longer centered to the screw shaft position assumes, which in turn increases the risk of leakage in the region of the sealing surface of the known sealing ring.
  • a sealing ring which has an annular groove with a capacity which corresponds to the volume of a sealing ring attached to the sealing body and allows deformation of the sealing body, so that the sealing body can be received in the annular groove.
  • This is to ensure that the sealing body can be pressed when screwing between a screw head and a support in the annular groove, which is flanked radially on both sides of groove flanks and thus the seal body should be protected from damage.
  • the known sealing ring on a base body made of a plastic material, on which at the top and the bottom of an annular groove is formed, in each of which a sealing body can be attached.
  • a gasket which has an annular radially inner support element, on which a sealing element can be formed radially outwardly, specifically on an outer section extending radially outwardly from the support element.
  • the sealing element has two sealing lips to be received in annular grooves of the flange surfaces to be sealed and may have a mounting projection radially outwardly.
  • a seal assembly for static sealing a fluid carrying connection between two interconnected devices with an elastomeric seal enclosing the fluid conducting connection has become known.
  • the seal has a web which can be buttoned into a peripheral groove of a plate and can be preassembled on a first device so that a uniform pressure is achieved during assembly of the second device.
  • a sealing ring has become known with a rigid support element on which sealing elements are arranged on both sides and the support element of the recording of compressive forces in the screwing of a first component in the form of a valve body against a second component in the form of a tap and a third component in the mold a shoulder serves.
  • the present invention seeks to further develop the known sealing ring such that a radial deflection of the Sealing elements bearing, attached to the support element elastomer body is avoided in a Axialdruckbeetzschung of the elastomeric body.
  • the invention now provides a sealing ring with an at least partially ring-shaped substantially rigid support member having support surfaces and radially on both sides adjacent to the support surfaces sealing elements, and the support element radially outwardly equiangularly arranged with each other unconnected surface segments with a cross-sectionally U-shaped elastomer body with sealing elements has.
  • the sealing ring provided according to the invention When the sealing ring provided according to the invention is brought into the region between a screw plug and a flange surface, then it comes when tightening the screw plug with its largely rigid support member with the flange associated underside of the stop collar of the screw plug and this opposite Verschraubungs resonance the flange in contact so that between the two support surfaces of the support member and the flange and the stop collar of the screw plug none of the sealing elements forming material is present, so for example no elastomeric material is present, which would tend to tighten the screw plug to uncontrolled radial displacement movement, so that is a defined position of the sealing ring between the stop collar of the screw plug and the screwing surface is given to the flange.
  • the arrangement of the sealing elements on the sealing ring is chosen so that they seal a gap or a gap surface in the flange radially on both sides against the environment of the gap or the gap surface. If, for example, the sealing ring rests on the flange surface in such a way that the supporting surface of the supporting element rests against the gap surface of the flange surface, then the sealing ring with its sealing elements arranged radially on both sides of this gap surface can seal the fluid emerging from the gap surface against the environment on both sides, so that the fluid, which may be, for example, motor oil, on the one hand not in the outward direction of the screw plug can step away and on the other hand not radially inwardly directed towards the shaft of the screw plug can occur and there so not with a in the region of the shaft the plug screw can mix existing second fluid.
  • the fluid which may be, for example, motor oil
  • the drain plug for example, the drain plug for the coolant of an internal combustion engine, so that a small amount of coolant at the threads of the engine block or the screw plug can pass, but not due to the radially inner sealing element of the sealing ring with the engine oil from the gap surface of the flange can mix.
  • the arrangement of the sealing elements on the sealing ring is provided so that they stand in the unloaded state in the axial direction of the support element on the support surfaces. It means in other words that when placing the sealing ring on the screw plug or the Verschraubungs phase the flange face the sealing elements come into contact with the respective surfaces and are loaded when tightening the screw plug with an axial force, which leads to a slight widening of the sealing elements, but not to an uncontrolled squeezing of the sealing elements, since the stronger tightening of the screw plug, the support surfaces of the support member of the sealing ring come into contact with the flange and the stop collar of the screw plug and thus a defined position of the sealing ring between the stop collar and the flange surface is maintained.
  • the sealing elements can be molded according to the invention to an elastomeric body which is connected to the support member on both sides of the gap surface so that the support surfaces are free of the elastomeric body.
  • the support member is an annular body formed with radially outwardly angularly arranged surface segments, which serve to connect the elastomeric body with at least one sealing element, so that the sealing elements having elastomeric body can be molded onto the annular support member and finds sufficient bonding surface on the surface segments ,
  • the surface segments of the support element may be surrounded by a U-shaped elastomer body having a respective sealing element on both legs.
  • the annular support member may also have an elastomeric body directed radially inwards, which has a sealing element towards the flange surface and the locking screw, and extends into the region of the shank of the locking screw.
  • the elastomer element located radially inwardly on the support element due to its extent, serves as centering for the sealing ring up to the region of the shank of the closure screw, preferably without threads.
  • the at least partially ring-shaped support member may have both radially outwardly and radially inwardly directed equiangularly arranged surface segments for connection of an elastomeric body with at least one sealing element, so that according to a development of the invention, the radially outer surface segments of the support element of a U-shaped in cross-section Elastomer body are surrounded, each having a sealing element on both legs of the U-shaped cross-section.
  • the support member may according to the invention directed radially inward extending into the region of the screw shaft and bear for centering on this and the flange and the locking screw out each have a sealing element, so that due to the centering of the sealing ring on the screw shaft and the rest the support member on the support surfaces on both the stop collar of the screw and on the flange a defined position of the sealing ring between the flange and locking screw when tightening the locking screw is maintained.
  • the support member may be formed of a metallic material, such as steel or aluminum, or of a plastic material.
  • the sealing elements can be semicircular in cross-section or, for example, in the form of a sealing lip and the sealing ring provided according to the invention can be provided, for example, to be arranged on a screw plug on a flange surface of an engine block, which in the area between the sealing elements a gap surface, for example due to the production of the engine block of different materials, and forms a separation surface or contact line between these two different materials and along which there may be a creeping of engine oil along the line of contact.
  • FIG. 1 The drawing shows a sectional view of a sealing ring 1 according to a first embodiment, as it is arranged between a screw plug 2 and a flange 3.
  • a screw plug 2 which serves as a drain plug for the discharge of the coolant from an engine block, which is formed of two different materials, namely in the range of the reference numeral 4, for example, magnesium or a magnesium alloy and in the region of the reference numeral 5 of, for example, aluminum or an aluminum alloy.
  • the reference numeral 6 denotes a contact line between the two different materials, along which it can come to creep of engine oil from the engine block, not shown.
  • Reference numeral 7 designates a coolant discharge passage from the engine block, which serves to discharge the coolant from the engine block during, for example, service work.
  • the closure screw 2 is by means of a thread 8 in the coolant channel. 7 fixed, along which - as a thread does not seal - can come out of small amounts of coolant. If a sealing element is now provided only in the radially outside of the contact surface forming a circumferential gap surface 6, it can lead to uncontrolled mixing of coolant and engine oil, which should be avoided.
  • the sealing ring 1 according to the invention is provided, which in the in Fig. 1 illustrated embodiment has an annular support member 9 and with support surfaces 10 and 11 on the stop collar 12 of the screw plug 2 and the flange 3 abuts.
  • the embodiment shown in the drawing of the sealing ring 1 has this in the radially outer region of the element 9 a cross-sectionally U-shaped sealing body 13, which has a semicircular sealing element 14 on both legs, which against both the stop collar 12 of the screw plug 2 and against the flange surface 3 seals.
  • a second sealing body 15 is integrally formed in this embodiment in the radially inner region with two sealing elements 16 which seal against the stop collar 12 and the flange 3.
  • the sealing body 16 extends radially inwardly into the region 17 of the formed without threads screw shank 18 to provide a centering for the sealing ring 1.
  • FIG. 2 The drawing shows a opposite to the in Fig. 1
  • the support element 9 of the sealing ring 19 after Fig. 2 a head 20 of the locking screw 2 cross-collar 21 and thus serves to center the sealing ring 19 on the screw head 20th
  • Fig. 2 illustrated sealing ring 19 a on the collar 21st formed sealing body 22 which extends in the radially inner region to the support surface 24 and has a sealing element 23 above the flange 3.
  • FIG. 3 The drawing shows a sealing ring 27 according to a second embodiment.
  • the support member 9 in the region of the support surfaces 10, 11 is annular and has directed radially inward and directed radially outwardly each have a web 28, so that the support member 9 in cross-section also as double T-shaped can be called.
  • the support element 9 is surrounded by a U-shaped sealing body 29 with two sealing elements 30 and at its radially inwardly directed region, the support member each have a sealing body 31 with associated sealing element 32.
  • the support member 9 extends at the in Fig. 3 illustrated embodiment of the sealing ring 27 into the region 17 of the screw shaft 18 and thus serves to center the sealing ring 27th
  • FIG. 4 The drawing shows a top view of a support element 9, as in the in Fig. 1 the drawing shown sealing ring 1 can be used.
  • the support element 9 has at its outer circumference arranged at equal angles connecting surfaces 33 for receiving an elastomeric body, which a sealing body 13 after Fig. 1 the drawing forms and at its top and bottom each have a sealing element 14.
  • connection surfaces 33 have a lower height compared to the height H of the support member 9, so that they can be completely encapsulated in the production of the sealing ring 1 by an elastomer material and thus a good surface connection of the elastomer material for forming the sealing body 13th can be achieved on the support element 9.
  • sealing ring 1 is characterized by the fact that it does not move compared to the above-described known sealing ring when tightening the screw plug 2 against the flange 3 and a safe investment of the sealing ring 1 both on the run-up collar of the screw 2 and the flange 3 is reached.
  • the sealing ring 2 according to the invention makes it possible to separate different liquid media present in the region of the sealing ring, so that mixing of a medium emerging from a contact line in the region of the flange surface with the other liquid medium present in the region of the screw shank is avoided.
  • the sealing ring according to the invention seals the two different media against the respective environment.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Glass Compositions (AREA)

Abstract

The sealing ring for especially for screw plugs (2) on a flange face (3) has a rigid support element (9) installed between the flange face and screw plug and lies against these components by support faces (10,11). The sealing ring (1) has at least one sealing element (14,16) radially adjacent to at least one of the support faces, and the sealing elements are designed so that they seal the gap face (6) radially on both sides against the environment. In the unloaded state the sealing elements protrude in the axial direction of the support element beyond the support faces. An independent claim is included of a use for the sealing ring which is for installed on a screw plug on a flange face of an engine block.

Description

Die vorliegende Erfindung betrifft einen Dichtring für insbesondere an einer Flanschfläche vorgesehene Verschlußschrauben nach dem Oberbegriff des Anspruches 1.The present invention relates to a sealing ring for particular provided on a flange sealing screws according to the preamble of claim 1.

Ein Dichtring, der an einer Verschraubung oder einer Verschlußschraube angebracht werden kann und einen ringförmigen Dichtkörper besitzt, ist bereits anhand der DE 39 03 780 bekannt geworden. Dieser Dichtring besitzt einen Dichtkörper, der in taschenförmigen Ausnehmungen an seiner radial außenliegenden Umfangsfläche metallische Einlagen besitzt, die dazu dienen sollen, das Verquetschen des Dichtrings zu beschränken, wenn der zwischen der Unterseite einer Schraube und einer Flanschfläche liegende Dichtring beim Anziehen der Verschlußschraube mit einer axial wirkenden Druckkraft beaufschlagt wird.A sealing ring which can be attached to a screw or a screw plug and has an annular sealing body, is already based on the DE 39 03 780 known. This sealing ring has a sealing body which has metallic inserts in pocket-shaped recesses on its radially outer peripheral surface, which are intended to limit the squeezing of the sealing ring when the sealing ring lying between the underside of a screw and a flange surface when tightening the screw plug with an axial acting compressive force is applied.

Es bedeutet dies mit anderen Worten, dass beim Anziehen der Verschlußschraube die in den taschenförmigen Ausnehmungen des Dichtkörpers liegenden metallischen Einlagen dafür sorgen sollen, dass der elastische Dichtkörper nicht so weit verquetscht wird, dass er seine Dichtfunktion nicht mehr ausüben kann.It means in other words that when tightening the screw plug lying in the pocket-shaped recesses of the sealing body metal inserts should ensure that the elastic sealing body is not so far squeezed that he can no longer exercise its sealing function.

Die Anordnung der Einlagen am Außenumfang des Dichtkörpers ist dabei so gewählt, dass die als Stützkörper dienenden Einlagen sowohl an ihrer Oberseite als auch an ihrer Unterseite vom Elastomerwerkstoff des Dichtkörpers umgeben sind. Wenn nun die Verschlußschraube angezogen wird, so führt dies zu einer in Axiallängsrichtung der Schraube wirkenden Druckkraft auf den bekannten Dichtring und - da die Stützelemente sowohl an ihrer Oberseite als auch an ihrer Unterseite vom Elastomerwerkstoff des Dichtkörpers umgeben sind - zu einem nicht definierten Nachgeben des bekannten Dichtkörpers unter der axial wirkenden Druckkraft der Verschlußschraube, so dass kein definiertes Anzugsmoment der Verschlußschraube mehr festgestellt werden kann. Zudem wird der bekannte Dichtkörper aufgrund der nicht definierten Situation beim Anziehen der Verschlußschraube verquetscht, so dass die Situation eintreten kann, dass der bekannte Dichtring seine ursprüngliche Funktion, nämlich eine Dichtfläche herzustellen, nicht mehr ausüben kann und außerdem besteht die Gefahr, dass sich der unter der Verschlußschraube beim Anziehen der Verschlußschraube mitdrehende bekannte Dichtring aus seiner vormals definierten Position zwischen der Verschlußschraube und der Flanschfläche löst und eine unkontrollierte und nicht mehr zum Schraubenschaft zentrierte Position einnimmt, was die Gefahr einer Leckage im Bereich der Dichtfläche des bekannten Dichtrings wiederum erhöht.The arrangement of the deposits on the outer circumference of the sealing body is chosen so that the serving as a support body deposits are surrounded both on its upper side and on its underside of the elastomeric material of the sealing body. Now, if the closure screw is tightened, this leads to an axial direction acting in the axial direction of the screw pressure force on the known sealing ring and - since the support elements are surrounded both at its top and on its underside by the elastomer material of the sealing body - to an undefined yielding of the known Sealing body under the axially acting pressure force of the screw plug, so that no defined tightening torque of the screw plug can be determined more. In addition, the known sealing body is squeezed due to the undefined situation when tightening the screw plug, so that the situation may occur that the known sealing ring its original function, namely to produce a sealing surface, no longer able to exercise and also there is a risk that the under the locking screw when tightening the locking screw co-rotating known sealing ring from its formerly defined position between the screw plug and the flange surface and an uncontrolled and no longer centered to the screw shaft position assumes, which in turn increases the risk of leakage in the region of the sealing surface of the known sealing ring.

Anhand der EP 1 391 640 A1 ist ein Dichtungsring bekannt geworden, der eine Ringnut mit einem Fassungsvermögen besitzt, welches dem Volumen eines am Dichtungsring angebrachten Dichtkörpers entspricht und eine Verformung des Dichtkörpers zulässt, so dass der Dichtkörper in der Ringnut aufgenommen werden kann. Damit soll erreicht werden, dass der Dichtkörper beim Verschrauben zwischen einem Schraubenkopf und einer Auflage in die Ringnut hineingedrückt werden kann, die radial beidseits von Nutflanken flankiert ist und somit soll der Dichtungskörper vor einer Beschädigung geschützt werden. Zu diesem Zweck weist der bekannte Dichtungsring einen Grundkörper aus einem Kunststoffwerkstoff auf, an dem an der Ober- und der Unterseite eine Ringnut ausgebildet ist, in der jeweils ein Dichtkörper angebracht werden kann.Based on EP 1 391 640 A1 a sealing ring has become known, which has an annular groove with a capacity which corresponds to the volume of a sealing ring attached to the sealing body and allows deformation of the sealing body, so that the sealing body can be received in the annular groove. This is to ensure that the sealing body can be pressed when screwing between a screw head and a support in the annular groove, which is flanked radially on both sides of groove flanks and thus the seal body should be protected from damage. For this purpose, the known sealing ring on a base body made of a plastic material, on which at the top and the bottom of an annular groove is formed, in each of which a sealing body can be attached.

Anhand der GB 2 375 149 A ist eine Dichtung bekannt geworden, die ein ringförmiges radial innenliegendes Stützelement aufweist, an dem radial außenliegend ein Dichtelement angeformt werden kann und zwar an einem sich vom Stützelement radial nach außen gerichtet erstreckenden äußeren Abschnitt. Das Dichtelement weist zwei zur Aufnahme in Ringnuten der abzudichtenden Flanschflächen aufzunehmende Dichtlippen auf und kann radial auswärtsgerichtet einen Montagevorsprung besitzen.Based on GB 2 375 149 A a gasket has become known, which has an annular radially inner support element, on which a sealing element can be formed radially outwardly, specifically on an outer section extending radially outwardly from the support element. The sealing element has two sealing lips to be received in annular grooves of the flange surfaces to be sealed and may have a mounting projection radially outwardly.

Anhand der AT 1 66 459 ist eine Abdichtung von Flanschverbindungen an Apparaturen, Rohrleitungen und dergleichen bekannt geworden, die dadurch gebildet wird, dass in schwalbenschwanzförmige Vertiefungen der einander gegenüberliegenden Flanschflächen eine aushärtbare Masse gebracht wird, in deren einander gegenüberliegende Stirnflächen eine Vertiefung angebracht wird zur Aufnahme einer dazwischen zu legenden Dichtung.Based on AT 1 66 459 a sealing of flanged connections to apparatuses, pipelines and the like has become known, which is formed by bringing a hardenable mass into dovetail-shaped recesses of the opposing flange surfaces, in whose opposing end faces a recess is provided for receiving a seal to be laid therebetween.

Anhand der DE 195 46 739 C2 ist eine Ablassschraube für einen Blechbehälter bekannt geworden, die mittels einer zwischengelegten Dichtungsscheibe mit dem Blechbehälter verschraubt werden kann.Based on DE 195 46 739 C2 a drain plug for a sheet metal container has become known, which can be screwed by means of an interposed sealing washer with the sheet metal container.

Anhand der DE 37 44 045 A1 ist eine Verbindung bekannt geworden mit zwei Kegelflanschen und einer dazwischen angeordneten Elastomerdichtung. Diese Dichtung weist dabei zwei Dichtwulste auf, an denen radial nach innen gerichtet ein Flachdichtteil angeformt ist und radial nach außen gerichtet ein Außendichtteil, an dem einen der Kegelflansche übergreifend im rechten Winkel ein Haltebund angeformt ist, sodass die Elastomerdichtung bereits bei der Montage der Verbindung am Kegelflansch fixiert ist.Based on DE 37 44 045 A1 a connection has become known with two conical flanges and an interposed elastomeric seal. This seal has two Dichtwulste at which radially inwardly directed a flat sealing part is formed and directed radially outward an outer sealing part, on which one of the conical flanges cross over a retaining collar is formed at right angles, so that the elastomer seal already in the assembly of the compound on Cone flange is fixed.

Anhand der DE 18 28 005 U ist eine Verschlussschraube mit einem an einer Zentrierschulter der Verschlussschraube angebrachten Dichtungsring bekannt geworden, der um einen geringen Betrag höher ist als die Höhe der Zentrierschulter.Based on DE 18 28 005 U is a screw plug with a mounted on a centering shoulder of the screw plug sealing ring has become known, which is higher by a small amount than the height of the Zentrierschulter.

Anhand der DE 199 11 696 A1 ist eine Dichtungsanordnung zum statischen Abdichten einer fluidführenden Verbindung zwischen zwei miteinander verbundenen Vorrichtungen mit einer die fluidführende Verbindung umschließenden elastomeren Dichtung bekannt geworden. Die Dichtung weist dabei einen Steg auf, der in eine Umfangsnut einer Platte einknöpfbar ist und an einer ersten Vorrichtung vormontierbar ist, damit bei der Montage der zweiten Vorrichtung eine gleichmäßige Pressung erreicht wird.Based on DE 199 11 696 A1 For example, a seal assembly for static sealing a fluid carrying connection between two interconnected devices with an elastomeric seal enclosing the fluid conducting connection has become known. In this case, the seal has a web which can be buttoned into a peripheral groove of a plate and can be preassembled on a first device so that a uniform pressure is achieved during assembly of the second device.

Anhand der FR-A-2 775 045 ist ein Verfahren zur Montage einer flexiblen Dichtung bekannt geworden und eine flexible Dichtung, die an einem runden Trägerkörper angebracht ist.Based on FR-A-2 775 045 For example, a method for assembling a flexible seal has become known and a flexible seal attached to a round support body.

Anhand der DE 201 06 824 U1 ist eine modifizierte gekammerte Flachdichtung bekannt geworden, die einen festen Stützring besitzt und eine in diesen einsetzbare Dichtung.Based on DE 201 06 824 U1 has become known a modified chambered flat gasket, which has a solid support ring and a usable in this seal.

Anhand der US-A-4 674 756 ist ein Dichtring mit einem starren Stützelement bekannt geworden, an dem beidseits Dichtelemente angeordnet sind und das Stützelement der Aufnahme von Druckkräften bei der Verschraubung eines ersten Bauteils in der Form eines Ventilkörpers gegen ein zweites Bauteil in der Form eines Zapfhahnes und eines dritten Bauteils in der Form einer Schulter dient.Based on US-A-4,674,756 a sealing ring has become known with a rigid support element on which sealing elements are arranged on both sides and the support element of the recording of compressive forces in the screwing of a first component in the form of a valve body against a second component in the form of a tap and a third component in the mold a shoulder serves.

Anhand der DE 196 52 782 A1 ist ein Dichtungselement bekannt geworden, an dem zwei konzentrische Dichtringe angeformt sind, wobei das Dichtungselement aus einer Gummischeibe besteht.Based on DE 196 52 782 A1 a sealing element has become known, on which two concentric sealing rings are formed, wherein the sealing element consists of a rubber disc.

Anhand der FR-A-2 549 593 ist eine Dichtungsanordnung an einem Wärmetauscher bekannt geworden, die eine Halteplatte aufweist mit zwei ringförmigen Dichtungen.Based on FR-A-2 549 593 a seal assembly has become known on a heat exchanger having a retaining plate with two annular seals.

Ausgehend hiervon liegt der vorliegenden Erfindung die Aufgabe zugrunde, den bekannten Dichtring derart weiterzubilden, dass ein radiales Ausweichen des die Dichtelemente tragenden, an dem Stützelement angebundenen Elastomerkörpers bei einer Axialdruckbeaufschlagung des Elastomerkörpers vermieden wird.Proceeding from this, the present invention seeks to further develop the known sealing ring such that a radial deflection of the Sealing elements bearing, attached to the support element elastomer body is avoided in a Axialdruckbeaufschlagung of the elastomeric body.

Der zur Lösung dieser Aufgabe geschaffene Dichtring weist die Merkmale des Anspruches 1 auf. Vorteilhafte Ausgestaltungen hiervon sind in den weiteren Ansprüchen beschrieben.The created for solving this problem sealing ring has the features of claim 1. Advantageous embodiments thereof are described in the further claims.

Die Erfindung schafft nunmehr einen Dichtring mit einem zumindest abschnittsweise ringförmig ausgebildeten weitgehend starren Stützelement, welches Stützflächen und radial beidseits benachbart zu den Stützflächen Dichtelemente besitzt, und das Stützelement nach radial außen gerichtete gleichwinkelig angeordnete untereinander unverbundene Flächensegmente mit einem im Querschnitt U-förmigen Elastomerkörper mit Dichtelementen besitzt.The invention now provides a sealing ring with an at least partially ring-shaped substantially rigid support member having support surfaces and radially on both sides adjacent to the support surfaces sealing elements, and the support element radially outwardly equiangularly arranged with each other unconnected surface segments with a cross-sectionally U-shaped elastomer body with sealing elements has.

Wenn der nach der Erfindung geschaffene Dichtring in den Bereich zwischen einer Verschlußschraube und einer Flanschfläche gebracht wird, dann kommt er beim Festziehen der Verschlußschraube mit seinem weitgehend starren Stützelement mit der der Flanschfläche zugeordneten Unterseite des Anlaufbunds der Verschlußschraube und der diesem gegenüberliegenden Verschraubungsfläche der Flanschfläche in Kontakt, so dass zwischen den beiden Stützflächen des Stützelements und der Flanschfläche sowie dem Anlaufbund der Verschlußschraube kein der die Dichtelemente ausbildender Werkstoff vorliegt, also beispielsweise kein Elastomerwerkstoff vorliegt, der beim Anziehen der Verschlußschraube zu einer unkontrollierten radialen Verschiebebewegung neigen würde, so dass also eine definierte Lage des Dichtrings zwischen dem Anlaufbund der Verschlußschraube und der Verschraubungsfläche an der Flanschfläche gegeben ist.When the sealing ring provided according to the invention is brought into the region between a screw plug and a flange surface, then it comes when tightening the screw plug with its largely rigid support member with the flange associated underside of the stop collar of the screw plug and this opposite Verschraubungsfläche the flange in contact so that between the two support surfaces of the support member and the flange and the stop collar of the screw plug none of the sealing elements forming material is present, so for example no elastomeric material is present, which would tend to tighten the screw plug to uncontrolled radial displacement movement, so that is a defined position of the sealing ring between the stop collar of the screw plug and the screwing surface is given to the flange.

Die Anordnung der Dichtelemente am Dichtring ist dabei so gewählt, dass diese einen Spalt oder eine Spaltfläche in der Flanschfläche radial beidseits gegen die Umgebung des Spaltes oder der Spaltfläche abdichten. Wenn nun beispielsweise der Dichtring an der Flanschfläche so aufliegt, dass die der Flanschfläche zugeordnete Stützfläche des Stützelements an der Spaltfläche der Flanschfläche aufliegt, so kann der Dichtring mit seinem radial beidseits dieser Spaltfläche angeordneten Dichtelementen das aus der Spaltfläche austretende Fluid gegenüber der Umgebung beidseits abdichten, so dass das Fluid, das beispielsweise Motoröl sein kann, einerseits nicht in Richtung nach außen von der Verschlußschraube weg treten kann und andererseits auch nicht radial nach innen gerichtet in Richtung zum Schaft der Verschlußschraube treten kann und sich dort also nicht mit einem im Bereich des Schaftes der Verschlußschraube vorhandenen zweiten Fluid mischen kann. So kann es sich bei der Verschlußschraube beispielsweise um die Ablaßschraube für das Kühlmittel eines Verbrennungsmotors handeln, so dass eine geringe Menge an Kühlmittel an den Gewindegängen des Motorblocks bzw. der Verschlußschraube vorbeitreten kann, sich aber aufgrund des radial innenliegenden Dichtelements des Dichtrings nicht mit dem Motoröl aus der Spaltfläche der Flanschfläche mischen kann.The arrangement of the sealing elements on the sealing ring is chosen so that they seal a gap or a gap surface in the flange radially on both sides against the environment of the gap or the gap surface. If, for example, the sealing ring rests on the flange surface in such a way that the supporting surface of the supporting element rests against the gap surface of the flange surface, then the sealing ring with its sealing elements arranged radially on both sides of this gap surface can seal the fluid emerging from the gap surface against the environment on both sides, so that the fluid, which may be, for example, motor oil, on the one hand not in the outward direction of the screw plug can step away and on the other hand not radially inwardly directed towards the shaft of the screw plug can occur and there so not with a in the region of the shaft the plug screw can mix existing second fluid. Thus, it may be the drain plug, for example, the drain plug for the coolant of an internal combustion engine, so that a small amount of coolant at the threads of the engine block or the screw plug can pass, but not due to the radially inner sealing element of the sealing ring with the engine oil from the gap surface of the flange can mix.

Die Anordnung der Dichtelemente am Dichtring ist dabei so vorgesehen, dass sie im unbelasteten Zustand in axialer Richtung des Stützelementes über die Stützflächen hervor stehen. Es bedeutet dies mit anderen Worten, dass beim Aufsetzen des Dichtrings an der Verschlußschraube bzw. der Verschraubungsfläche der Flanschfläche die Dichtelemente mit den jeweiligen Flächen in Kontakt kommen und beim Anziehen der Verschlußschraube mit einer Axialkraft belastet werden, die zu einem geringfügigen Verbreitern der Dichtelemente führt, nicht aber zu einem unkontrollierten Verquetschen der Dichtelemente, da beim stärkeren Anziehen der Verschlußschraube die Stützflächen des Stützelements des Dichtrings mit der Flanschfläche und dem Anlaufbund der Verschlußschraube in Kontakt kommen und somit eine definierte Lage des Dichtrings zwischen dem Anlaufbund und der Flanschfläche erhalten bleibt.The arrangement of the sealing elements on the sealing ring is provided so that they stand in the unloaded state in the axial direction of the support element on the support surfaces. It means in other words that when placing the sealing ring on the screw plug or the Verschraubungsfläche the flange face the sealing elements come into contact with the respective surfaces and are loaded when tightening the screw plug with an axial force, which leads to a slight widening of the sealing elements, but not to an uncontrolled squeezing of the sealing elements, since the stronger tightening of the screw plug, the support surfaces of the support member of the sealing ring come into contact with the flange and the stop collar of the screw plug and thus a defined position of the sealing ring between the stop collar and the flange surface is maintained.

Die Dichtelemente können dabei nach der Erfindung an einem Elastomerkörper angeformt sein, der am Stützelement beidseits der Spaltfläche so angebunden ist, dass die Stützflächen frei sind vom Elastomerkörper.The sealing elements can be molded according to the invention to an elastomeric body which is connected to the support member on both sides of the gap surface so that the support surfaces are free of the elastomeric body.

Nach der Erfindung ist das Stützelement ein ringförmig ausgebildeter Körper mit radial nach außen gerichtet winkelig angeordneten Flächensegmenten, die der Anbindung des Elastomerkörpers mit mindestens einem Dichtelement dienen, so dass der Dichtelemente aufweisende Elastomerkörper an das ringförmige Stützelement angespritzt werden kann und an den Flächensegmenten ausreichende Anbindungsfläche findet.According to the invention, the support member is an annular body formed with radially outwardly angularly arranged surface segments, which serve to connect the elastomeric body with at least one sealing element, so that the sealing elements having elastomeric body can be molded onto the annular support member and finds sufficient bonding surface on the surface segments ,

Wenn es gewünscht ist, sowohl an der dem Anlaufbund der Verschlußschraube zugewandten Seite als auch der der Flanschfläche zugewandten Seite Dichtelemente vorzusehen, dann können die Flächensegmente des Stützelements von einem im Querschnitt U-förmigen Elastomerkörper umgeben sein, der an beiden Schenkeln jeweils ein Dichtelement aufweist.If it is desired to provide sealing elements both on the side facing the stop collar of the screw plug and on the side facing the flange surface, then the surface segments of the support element may be surrounded by a U-shaped elastomer body having a respective sealing element on both legs.

Das ringförmige Stützelement kann auch in Richtung nach radial innen gerichtet einen Elastomerkörper aufweisen, der zur Flanschfläche und zur Verschlußschraube hin ein Dichtelement besitzt, und sich bis in den Bereich des Schaftes der Verschlußschraube hin erstreckt. Bei dieser Ausführungsform dient der am Stützelement radial innenliegende Elastomerkörper aufgrund seiner Erstreckung bis in den Bereich des vorzugsweise ohne Gewindegänge ausgebildeten Schaftes der Verschlußschraube als Zentrierung für den Dichtring.The annular support member may also have an elastomeric body directed radially inwards, which has a sealing element towards the flange surface and the locking screw, and extends into the region of the shank of the locking screw. In this embodiment, the elastomer element located radially inwardly on the support element, due to its extent, serves as centering for the sealing ring up to the region of the shank of the closure screw, preferably without threads.

Das zumindest abschnittsweise ringförmig ausgebildete Stützelement kann sowohl nach radial außen als auch nach radial innen gerichtete gleichwinkelig angeordnete Flächensegmente zur Anbindung eines Elastomerkörpers mit mindestens einem Dichtelement aufweisen, so dass nach einer Weiterbildung der Erfindung die radial außenliegenden Flächensegmente des Stützelements von einem im Querschnitt U-förmigen Elastomerkörper umgeben sind, der an beiden Schenkeln des U-förmigen Querschnitts jeweils ein Dichtelement besitzt.The at least partially ring-shaped support member may have both radially outwardly and radially inwardly directed equiangularly arranged surface segments for connection of an elastomeric body with at least one sealing element, so that according to a development of the invention, the radially outer surface segments of the support element of a U-shaped in cross-section Elastomer body are surrounded, each having a sealing element on both legs of the U-shaped cross-section.

Das Stützelement kann sich nach der Erfindung dabei nach radial innen gerichtet bis in den Bereich des Schraubenschaftes erstrecken und zur Zentrierung an diesem anliegen und zur Flanschfläche und zur Verschlußschraube hin jeweils ein Dichtelement aufweisen, so dass aufgrund der Zentrierung des Dichtrings an dem Schraubenschaft und dem Aufliegen des Stützelements über die Stützflächen sowohl am Anlaufbund der Schraube als auch an der Flanschfläche eine definierte Lage des Dichtrings zwischen Flanschfläche und Verschlußschraube beim Anziehen der Verschlußschraube erhalten bleibt.The support member may according to the invention directed radially inward extending into the region of the screw shaft and bear for centering on this and the flange and the locking screw out each have a sealing element, so that due to the centering of the sealing ring on the screw shaft and the rest the support member on the support surfaces on both the stop collar of the screw and on the flange a defined position of the sealing ring between the flange and locking screw when tightening the locking screw is maintained.

Das Stützelement kann dabei aus einem metallischen Werkstoff, wie beispielsweise Stahl oder Aluminium gebildet sein, oder auch aus einem Kunststoffwerkstoff. Die Dichtelemente können im Querschnitt halbkreisförmig oder beispielsweise in der Form einer Dichtlippe ausgebildet sein und der nach der Erfindung geschaffene Dichtring kann beispielsweise zur Anordnung an einer Verschlußschraube an einer Flanschfläche eines Motorblocks vorgesehen sein, die im Bereich zwischen den Dichtelementen eine Spaltfläche, beispielsweise aufgrund der Herstellung des Motorblocks aus unterschiedlichen Werkstoffen, aufweist, und eine Trennfläche bzw. Kontaktlinie zwischen diesen beiden unterschiedlichen Werkstoffen bildet und entlang der es zu einem Kriechen von Motoröl entlang der Kontaktlinie kommen kann.The support member may be formed of a metallic material, such as steel or aluminum, or of a plastic material. The sealing elements can be semicircular in cross-section or, for example, in the form of a sealing lip and the sealing ring provided according to the invention can be provided, for example, to be arranged on a screw plug on a flange surface of an engine block, which in the area between the sealing elements a gap surface, for example due to the production of the engine block of different materials, and forms a separation surface or contact line between these two different materials and along which there may be a creeping of engine oil along the line of contact.

Die Erfindung wird im folgenden anhand der Zeichnung näher erläutert. Diese zeigt in:

  • Fig. 1 eine Schnittdarstellung eines Dichtrings nach einer ersten Ausführungsform, der zwischen einer Flanschfläche und einer Verschlußschraube angeordnet ist;
  • Fig. 2 eine nicht von der vorliegenden Erfindung erfasste Darstellung
  • Fig. 3 eine Ansicht ähnlich Fig. 1 mit einem Dichtring nach einer zweiten Ausführungsform; und
  • Fig. 4 ein Stützelement eines Dichtrings in einer Draufsichtansicht; sowie
  • Fig. 5 das Stützelement nach Fig. 4 in einer perspektivischen Darstellung.
The invention will be explained in more detail below with reference to the drawing. This shows in:
  • Fig. 1 a sectional view of a sealing ring according to a first embodiment, which is arranged between a flange and a screw plug;
  • Fig. 2 a representation not covered by the present invention
  • Fig. 3 a view similar Fig. 1 with a sealing ring according to a second embodiment; and
  • Fig. 4 a support member of a sealing ring in a plan view; such as
  • Fig. 5 the support element after Fig. 4 in a perspective view.

Fig. 1 der Zeichnung zeigt in einer Schnittdarstellung einen Dichtring 1 nach einer ersten Ausführungsform, wie er zwischen einer Verschlußschraube 2 und einer Flanschfläche 3 angeordnet ist. Fig. 1 The drawing shows a sectional view of a sealing ring 1 according to a first embodiment, as it is arranged between a screw plug 2 and a flange 3.

Bei dem dargestellten Anwendungsfall handelt es sich um eine Verschlußschraube 2, die als Ablaßschraube für das Ablassen des Kühlmittels aus einem Motorblock dient, der aus zwei unterschiedlichen Werkstoffen gebildet ist, nämlich im Bereich des Bezugszeichens 4 beispielsweise aus Magnesium beziehungsweise einer Magnesiumlegierung und im Bereich des Bezugszeichens 5 aus beispielsweise Aluminium beziehungsweise einer Aluminiumlegierung. Das Bezugszeichen 6 bezeichnet eine Kontaktlinie zwischen den beiden unterschiedlichen Werkstoffen, entlang der es zu Kriechen von Motoröl aus dem nicht näher dargestellten Motorblock kommen kann.In the illustrated application is a screw plug 2, which serves as a drain plug for the discharge of the coolant from an engine block, which is formed of two different materials, namely in the range of the reference numeral 4, for example, magnesium or a magnesium alloy and in the region of the reference numeral 5 of, for example, aluminum or an aluminum alloy. The reference numeral 6 denotes a contact line between the two different materials, along which it can come to creep of engine oil from the engine block, not shown.

Mit dem Bezugszeichen 7 ist ein Kühlmittelablasskanal aus dem Motorblock bezeichnet, der zum Ablassen des Kühlmittels aus dem Motorblock während beispielsweise Servicearbeiten dient.Reference numeral 7 designates a coolant discharge passage from the engine block, which serves to discharge the coolant from the engine block during, for example, service work.

Die Verschlußschraube 2 wird mittels eines Gewindes 8 in dem Kühlmittelkanal 7 fixiert, entlang dem es - da ein Gewinde nicht dichtet - zum Austreten von geringen Mengen von Kühlmittel kommen kann. Wenn nunmehr nur im radial außerhalb der eine umlaufende Spaltfläche ausbildenden Kontaktlinie 6 ein Dichtelement vorgesehen ist, kann es zum unkontrollierten Mischen von Kühlmittel und Motoröl gelangen, was zu vermeiden ist.The closure screw 2 is by means of a thread 8 in the coolant channel. 7 fixed, along which - as a thread does not seal - can come out of small amounts of coolant. If a sealing element is now provided only in the radially outside of the contact surface forming a circumferential gap surface 6, it can lead to uncontrolled mixing of coolant and engine oil, which should be avoided.

Um nun das unkontrollierte Mischen dieser beiden flüssigen Medien Motoröl und Kühlmittel zu vermeiden, ist der erfindungsgemäße Dichtring 1 vorgesehen, der bei der in Fig. 1 dargestellten Ausführungsform ein ringförmig ausgebildetes Stützelement 9 aufweist und mit Stützflächen 10 und 11 an dem Anlaufbund 12 der Verschlußschraube 2 bzw. der Flanschfläche 3 anliegt.In order to avoid the uncontrolled mixing of these two liquid media engine oil and coolant, the sealing ring 1 according to the invention is provided, which in the in Fig. 1 illustrated embodiment has an annular support member 9 and with support surfaces 10 and 11 on the stop collar 12 of the screw plug 2 and the flange 3 abuts.

Bei der in Fig. 1 der Zeichnung dargestellten Ausführungsform des Dichtringes 1 weist dieser im radial außenliegenden Bereich des Elements 9 einen im Querschnitt U-förmigen Dichtkörper 13 auf, der an beiden Schenkeln jeweils ein halbkreisförmig ausgebildetes Dichtelement 14 besitzt, welches sowohl gegen den Anlaufbund 12 der Verschlußschraube 2 als auch gegen die Flanschfläche 3 abdichtet.At the in Fig. 1 the embodiment shown in the drawing of the sealing ring 1 has this in the radially outer region of the element 9 a cross-sectionally U-shaped sealing body 13, which has a semicircular sealing element 14 on both legs, which against both the stop collar 12 of the screw plug 2 and against the flange surface 3 seals.

Am Stützelement 9 ist bei dieser Ausführungsform im radial innenliegenden Bereich ein zweiter Dichtkörper 15 angeformt mit zwei Dichtelementen 16, die gegenüber dem Anlaufbund 12 und der Flanschfläche 3 abdichten. Bei dieser Ausführungsform erstreckt sich der Dichtkörper 16 radial nach innen gerichtet bis in den Bereich 17 des ohne Gewindegänge ausgebildeten Schraubenschaftes 18, um eine Zentrierung für den Dichtring 1 zu schaffen.On the support element 9, a second sealing body 15 is integrally formed in this embodiment in the radially inner region with two sealing elements 16 which seal against the stop collar 12 and the flange 3. In this embodiment, the sealing body 16 extends radially inwardly into the region 17 of the formed without threads screw shank 18 to provide a centering for the sealing ring 1.

Fig. 2 der Zeichnung zeigt ein gegenüber der in Fig. 1 dargestellten ersten Ausführungsform des Dichtrings 1 modifiziertes nicht von der Erfindung erfasstes Beispiel eines Dichtrings 19. Wie es ohne weiteres ersichtlich ist, weist das Stützelement 9 des Dichtrings 19 nach Fig. 2 einen den Kopf 20 der Verschlußschraube 2 übergreifenden Bund 21 auf und dient somit der Zentrierung des Dichtringes 19 am Schraubenkopf 20. Fig. 2 The drawing shows a opposite to the in Fig. 1 As is readily apparent, the support element 9 of the sealing ring 19 after Fig. 2 a head 20 of the locking screw 2 cross-collar 21 and thus serves to center the sealing ring 19 on the screw head 20th

Darüber hinaus besitzt der in Fig. 2 dargestellte Dichtring 19 einen am Bund 21 angeformten Dichtkörper 22, der sich im radial innenliegenden Bereich bis zur Stützfläche 24 erstreckt und der über der Flanschfläche 3 ein Dichtelement 23 besitzt.In addition, the in Fig. 2 illustrated sealing ring 19 a on the collar 21st formed sealing body 22 which extends in the radially inner region to the support surface 24 and has a sealing element 23 above the flange 3.

Da bei dem in Fig. 2 der Zeichnung dargestellten Beispiel des Dichtrings 19 eine Zentrierung des Dichtringes 19 mittels des Bundes 21 am Schraubenkopf 20 erreicht wird, erstreckt sich der am Stützelement 9 radial innenliegende Dichtkörper 25 nicht mehr bis in den Bereich 17 des Schraubenschaftes 18, besitzt aber ähnlich wie der in Fig. 1 dargestellte Dichtkörper 15 zwei Dichtelemente 26.Since at the in Fig. 2 the drawing shown example of the sealing ring 19 a centering of the sealing ring 19 is achieved by means of the collar 21 on the screw head 20, the support element 9 radially inner sealing body 25 no longer extends into the region 17 of the screw shaft 18, but has similar to that in Fig. 1 Sealing body 15 shown two sealing elements 26th

Fig. 3 der Zeichnung zeigt nun einen Dichtring 27 nach einer zweiten Ausführungsform. Fig. 3 The drawing shows a sealing ring 27 according to a second embodiment.

Wie es ohne weiteres ersichtlich ist, ist bei dieser Ausführungsform das Stützelement 9 im Bereich der Stützflächen 10, 11 ringförmig ausgebildet und besitzt nach radial innen gerichtet und auch nach radial außen gerichtet jeweils einen Steg 28, so dass das Stützelement 9 im Querschnitt betrachtet auch als doppel T-förmig bezeichnet werden kann.As is readily apparent, in this embodiment, the support member 9 in the region of the support surfaces 10, 11 is annular and has directed radially inward and directed radially outwardly each have a web 28, so that the support member 9 in cross-section also as double T-shaped can be called.

An seinem nach radial außen gerichteten Bereich ist das Stützelement 9 von einem im Querschnitt U-förmigen Dichtkörper 29 mit zwei Dichtelementen 30 umfaßt und an seinem nach radial innen gerichteten Bereich weist das Stützelement jeweils einen Dichtkörper 31 mit zugehörigem Dichtelement 32 auf. Das Stützelement 9 erstreckt sich bei der in Fig. 3 dargestellten Ausführungsform des Dichtrings 27 bis in den Bereich 17 des Schraubenschaftes 18 und dient somit der Zentrierung des Dichtrings 27.At its radially outwardly directed region, the support element 9 is surrounded by a U-shaped sealing body 29 with two sealing elements 30 and at its radially inwardly directed region, the support member each have a sealing body 31 with associated sealing element 32. The support member 9 extends at the in Fig. 3 illustrated embodiment of the sealing ring 27 into the region 17 of the screw shaft 18 and thus serves to center the sealing ring 27th

Fig. 4 der Zeichnung zeigt in einer Draufsichtansicht ein Stützelement 9, wie es bei dem in Fig. 1 der Zeichnung dargestellten Dichtring 1 zum Einsatz kommen kann. Fig. 4 The drawing shows a top view of a support element 9, as in the in Fig. 1 the drawing shown sealing ring 1 can be used.

Wie es ohne weiteres ersichtlich ist, weist das Stützelement 9 an seinem Außenumfang in gleichen Winkeln angeordnete Anbindungsflächen 33 zur Aufnahme eines Elastomerkörpers auf, der einen Dichtkörper 13 nach Fig. 1 der Zeichnung ausbildet und an seiner Oberseite und Unterseite jeweils ein Dichtelement 14 aufweist.As can readily be seen, the support element 9 has at its outer circumference arranged at equal angles connecting surfaces 33 for receiving an elastomeric body, which a sealing body 13 after Fig. 1 the drawing forms and at its top and bottom each have a sealing element 14.

Wie es Fig. 5 der Zeichnung zeigt, weisen die Anbindungsflächen 33 eine verglichen mit der Höhe H des Stützelements 9 geringere Höhe auf, so dass sie bei der Herstellung des Dichtrings 1 von einem Elastomerwerkstoff vollständig umspritzt werden können und somit eine gute flächige Anbindung des Elastomerwerkstoffs zur Ausbildung des Dichtkörpers 13 am Stützelement 9 erreicht werden kann.Like it Fig. 5 The drawing shows, the connection surfaces 33 have a lower height compared to the height H of the support member 9, so that they can be completely encapsulated in the production of the sealing ring 1 by an elastomer material and thus a good surface connection of the elastomer material for forming the sealing body 13th can be achieved on the support element 9.

Der nach der Erfindung geschaffene Dichtring 1 zeichnet sich nun dadurch aus, dass er sich verglichen mit dem eingangs geschilderten bekannten Dichtring beim Festziehen der Verschlußschraube 2 gegen die Flanschfläche 3 nicht verschiebt und eine sichere Anlage des Dichtrings 1 sowohl am Anlaufbund der Schraube 2 als auch an der Flanschfläche 3 erreicht wird. Darüber hinaus ermöglicht es der erfindungsgemäße Dichtring 2 im Bereich des Dichtringes vorhandene unterschiedliche flüssige Medien getrennt zu halten, so dass ein Vermischen eines aus einer Kontaktlinie im Bereich der Flanschfläche austretenden Mediums mit dem im Bereich des Schraubenschaftes vorhandenen anderen flüssigen Mediums vermieden wird. Zudem dichtet der erfindungsgemäße Dichtring die beiden unterschiedlichen Medien gegen die jeweilige Umgebung ab.The created according to the invention sealing ring 1 is characterized by the fact that it does not move compared to the above-described known sealing ring when tightening the screw plug 2 against the flange 3 and a safe investment of the sealing ring 1 both on the run-up collar of the screw 2 and the flange 3 is reached. In addition, the sealing ring 2 according to the invention makes it possible to separate different liquid media present in the region of the sealing ring, so that mixing of a medium emerging from a contact line in the region of the flange surface with the other liquid medium present in the region of the screw shank is avoided. In addition, the sealing ring according to the invention seals the two different media against the respective environment.

Obwohl bei den dargestellten Ausführungsformen als flüssige Medien einerseits Kühlflüssigkeit und andererseits Motoröl genannt wurden, ist es auch möglich, den erfindungsgemäßen Dichtring zum Abdichten anderer Medien, wie beispielsweise Luft und Bremsflüssigkeit oder dergleichen einzusetzen.Although in the embodiments shown as liquid media on the one hand cooling liquid and on the other hand motor oil were called, it is also possible to use the sealing ring according to the invention for sealing other media, such as air and brake fluid or the like.

Hinsichtlich vorstehend im einzelnen nicht näher erläuterter Merkmale der Erfindung wird im übrigen ausdrücklich auf die Ansprüche und die Zeichnung verwiesen.With regard to the above in detail not explained in detail features of the invention, reference is expressly made to the claims and the drawings.

Claims (8)

  1. Sealing ring with a substantially rigid support element (9) which is annular at least in portions and has support faces (10, 11) and sealing elements (14, 16; 30, 32) radially adjacent on both sides to the support faces (10, 11), characterised in that the support element (9) has surface segments (33) unconnected to one another, arranged in an equiangular manner and directed radially outwardly, which are surrounded by a cross-sectionally U-shaped elastomer body with sealing elements (14; 30).
  2. Sealing ring according to claim 1, characterised in that the sealing elements (14, 16; 30, 32) in the unloaded state project over the support faces (10, 11) in the axial direction of the support element (9).
  3. Sealing ring according to claim 1 or 2, characterised in that the sealing elements (14, 16; 30, 32) are formed on an elastomer body, which is connected to the support element (9) in such a way that the support faces (10, 11) are free of elastomer material.
  4. Sealing ring according to claim 1, characterised in that the sealing element (16) is formed on an elastomer body (15) directed radially inwardly on the support element (9).
  5. Sealing ring according to any one of claims 1 to 3, characterised in that the support element (9) has radially inwardly directed surface segments arranged in an equiangular manner to connect an elastomer body with sealing elements (32).
  6. Sealing ring according to claim 5, characterised in that the support element (9) is configured radially inwardly for centring on a screw shank.
  7. Sealing ring according to any one of the preceding claims, characterised in that the sealing elements (14, 16; 30, 32) are semicircular in cross-section or configured in the form of a sealing lip.
  8. Flange face (3) with a gap face (6) and closure screw (2) and a sealing ring (1) with a substantially rigid support element (9) which is annular at least in portions and can be brought into abutment with support faces (10, 11) on the flange face (3) having the gap face (6), and on the closure screw (2), and has sealing elements (14, 16; 30, 32) radially adjacent on both sides to the support faces (10, 11), which sealing elements seal the gap face (6) of the flange face (3) on both sides against the surroundings of the gap face (6), characterised in that the support element (9) has surface segments (33) which are unconnected to one another, arranged in an equiangular manner and directed radially outwardly and which are surrounded by a cross-sectionally U-shaped elastomer body with sealing elements (14; 30).
EP05009230A 2004-05-04 2005-04-27 Sealing ring Not-in-force EP1593885B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004021868 2004-05-04
DE102004021868A DE102004021868A1 (en) 2004-05-04 2004-05-04 seal

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Publication Number Publication Date
EP1593885A1 EP1593885A1 (en) 2005-11-09
EP1593885B1 true EP1593885B1 (en) 2009-01-21

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EP05009230A Not-in-force EP1593885B1 (en) 2004-05-04 2005-04-27 Sealing ring

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EP (1) EP1593885B1 (en)
AT (1) ATE421656T1 (en)
DE (2) DE102004021868A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015004111U1 (en) * 2015-06-12 2015-09-28 Hecker Holding Gmbh & Co. Kg Seal for sealing flange connections
DE102016100610A1 (en) * 2016-01-15 2017-07-20 Newfrey Llc Dowel-type insert and fastening method

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT166459B (en) *
DE1828005U (en) * 1960-10-15 1961-03-09 Daimler Benz Ag SCREW.
US4389047A (en) * 1981-01-02 1983-06-21 Hall Lawrence W Rotary exercise device
FR2549593B1 (en) * 1983-07-22 1987-04-10 Chausson Usines Sa HEAT EXCHANGER WATER BOX CONTAINING A SECONDARY HEAT EXCHANGER
US4674756A (en) * 1986-04-28 1987-06-23 Draft Systems, Inc. Structurally supported elastomer sealing element
DE3744045A1 (en) * 1987-12-24 1989-07-06 Linnemann Friedrich Connection
DE3903780C2 (en) * 1989-02-09 1996-03-21 Festo Kg Sealing ring
DE19546739C2 (en) * 1995-12-14 1999-08-19 Ford Werke Ag Drain plug for a tin container
DE19652782A1 (en) * 1996-12-19 1998-06-25 Valeo Gmbh Seal for oil cooler of water box, used in gearbox of motor vehicle
FR2775045B1 (en) * 1998-02-18 2000-05-12 Freudenberg Sa METHOD FOR MOUNTING A FLEXIBLE JOINT ON A WORKPIECE AND WORKPIECE EQUIPPED WITH SUCH A JOINT
DE19911696A1 (en) * 1999-03-16 2000-10-05 Bruss Dichtungstechnik Sealing device for sealing connection between car engine and oil filter or heat exchanger comprises annular plate with elastomeric sealing ring around its circumference
GB2375149B (en) * 2001-03-26 2004-07-21 John Henry A gasket
DE20106824U1 (en) * 2001-04-20 2001-08-30 Koethener Spezialdichtungen Gm Modified chambered flat gasket

Also Published As

Publication number Publication date
DE102004021868A1 (en) 2005-12-01
DE502005006510D1 (en) 2009-03-12
ATE421656T1 (en) 2009-02-15
EP1593885A1 (en) 2005-11-09

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