DE102007054887A1 - Sealing device for e.g. rim of wheel of heaviest commercial motor vehicle, has ring seals with inner sealing rings held in prestressed manner and pressed to appropriate counter surfaces by positive pressure lying in chamber - Google Patents
Sealing device for e.g. rim of wheel of heaviest commercial motor vehicle, has ring seals with inner sealing rings held in prestressed manner and pressed to appropriate counter surfaces by positive pressure lying in chamber Download PDFInfo
- Publication number
- DE102007054887A1 DE102007054887A1 DE102007054887A DE102007054887A DE102007054887A1 DE 102007054887 A1 DE102007054887 A1 DE 102007054887A1 DE 102007054887 A DE102007054887 A DE 102007054887A DE 102007054887 A DE102007054887 A DE 102007054887A DE 102007054887 A1 DE102007054887 A1 DE 102007054887A1
- Authority
- DE
- Germany
- Prior art keywords
- sealing
- ring
- sealing device
- chamber
- ring seals
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
- B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
- B60C23/00363—Details of sealings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
- B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
- B60C23/00309—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors
- B60C23/00318—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors on the wheels or the hubs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
Description
Die Erfindung betrifft eine Dichtungsvorrichtung für ein Kraftfahrzeugrad zum Verändern des Reifenluftdrucks während der Fahrt.The The invention relates to a sealing device for a motor vehicle wheel for Changing the tire air pressure while driving.
Auf
zwei axialen Ringdichtungen zur Abdichtung einer zwischen den Ringdichtungen
gebildeten Kammer zur Druckluftdurchführung beruhende Dichtungsvorrichtungen
sind bekannt, siehe
Die Aufgabe der Erfindung besteht darin, eine Dichtungsvorrichtung mit sehr langer Standzeit bereitzustellen, die insbesondere auch bei schweren Fahrzeugen eine zuverlässige Veränderung des Reifenluftdrucks während der Fahrt gestattet.The The object of the invention is to provide a sealing device To provide a very long service life, especially in heavy vehicles a reliable change the tire air pressure while driving allowed.
Die Erfindung löst diese Aufgabe mit den Mitteln von Anspruch 1. Weil die inneren Dichtringe nicht mit Vorspannung beaufschlagt sind, können die Ringdichtungen im drucklosen Dauerbetrieb im Wesentlichen berührungs- und somit verschleißfrei laufen. Dies ermöglicht insbesondere die Verwendung von Trockenlaufdichtungen. Durch Anlegen eines Überdrucks in der Durchgangsöffnung relativ zum Atmosphärendruck werden die inneren Dichtringe axial frei verschoben, bis die Dichtfläche jeweils an einer entsprechenden Gegenlauffläche anliegt. Die Ringdichtungen kommen auf diese Weise praktisch sofort in Eingriff. Die inneren Dichtringe werden nur solange an die Gegenlauffläche gedrückt, wie der Überdruck in der Durchgangsöffnung anliegt. Die erfindungsgemäße Dreh-Druck-Zuführung ist zur Luftdruckregelung in Reifen auch von schwersten Nutzfahrzeugen, das heißt bei einem Luftdruck bis beispielsweise 10 bar, geeignet.The Invention solves this problem by the means of claim 1. Because the inner sealing rings are not biased are, the ring seals can in unpressurized continuous operation essentially contact-free and therefore wear-free to run. This allows in particular the use of Dry-running seals. By applying an overpressure in the passage opening relative to the atmospheric pressure the inner sealing rings are moved axially freely until the sealing surface respectively abuts against a corresponding mating surface. The ring seals come in this way almost immediately engaged. The inner ones Sealing rings are pressed against the mating surface only as long as how the overpressure rests in the passage opening. The rotary-pressure supply according to the invention is for air pressure control in tires of even the heaviest commercial vehicles, the is at an air pressure to, for example, 10 bar, suitable.
Die Betriebsbedingungen lassen sich wie folgt zusammenfassen. Abzudichtendes Medium: Luft. Schmierung: Überwiegend oder ausschließlich Trockenlauf der Dichtung. Abzudichtender Druck: kurzfristig bis etwa 10 bar. Drehzahl: bis etwa 700 U/min.The Operating conditions can be summarized as follows. be sealed Medium: air. Lubrication: Mainly or exclusively dry run the seal. Pressure to be sealed: short term up to about 10 bar. Speed: up to about 700 rpm.
Vorzugsweise weisen die axialen Ringdichtungen jeweils ein nichtmetallisches Dichtelement mit guter Trockenlaufbeständigkeit beispielsweise auf der Basis eines PTFE-Compounds auf. Es ist vorteilhaft, wenn das nichtmetallische Dichtelement Teil des axial verschiebbaren inneren Dichtrings ist. Die Gegenlauffläche kann dann von einem metallischen äußeren Dichtring gebildet werden, der eine Ableitung der Reibungswärme an ein mit dem äußeren Dichtring verbundenes metallisches Bauteil, insbesondere Achse bzw. Welle oder Gehäuse, ermöglicht.Preferably The axial ring seals each have a non-metallic Sealing element with good dry-running resistance, for example based on a PTFE compound. It is advantageous if the non-metallic sealing element part of the axially displaceable inner sealing ring is. The mating surface can then from formed a metallic outer sealing ring be a derivative of the frictional heat with a the outer sealing ring connected metallic Component, in particular axle or shaft or housing allows.
In einer konstruktiv bevorzugten Ausführungsform steht ein innerer Dichtring mit dem gegenüberliegenden äußeren Dichtring drehfest aber axialverschiebbar in Eingriff, um Rotationsreibung zwischen diesen Komponenten und entsprechenden Verschleiß zu vermeiden.In a structurally preferred embodiment is inner sealing ring with the opposite outer Seal rotatably but axially displaceable engaged to rotational friction between these components and corresponding wear too avoid.
Die Erfindung wird im Folgenden anhand vorteilhafter Ausführungsformen unter Bezugnahme auf die beigefügten Figuren erläutert. Dabei zeigt:The Invention will be described below with reference to advantageous embodiments explained with reference to the accompanying figures. Showing:
Die
Dichtungsvorrichtung
Die
Dichtungsvorrichtung
Die
erste Ringdichtung
Der äußere
Dichtring
Die
zweite Ringdichtung
Der äußere
Dichtring
Die
axiale Verschiebung des innere Dichtring
Zum
Schutz insbesondere der Dichtfläche
Die
Dichtelemente
Die
die Gegenlaufflächen bildenden äußeren Dichtringe
Die
Funktionsweise der Dichtungsvorrichtung
Es
sei nun angenommen, dass während der Fahrt der Reifenluftdruck
erhöht werden soll. Dies kann beispielsweise bei einem
geländegängigen Fahrzeug beim Übergang
von Gelände, wo mit reduziertem Reifenluftdruck gefahren
wird, auf eine asphaltierte Straße zweckmäßig
sein. Wenn eine entsprechende Bedieneinrichtung betätigt
wird, veranlasst eine nicht gezeigte Steuervorrichtung beispielsweise
durch öffnen eines ebenfalls nicht gezeigten Ventils, dass
der Kanal
Sobald
der gewünschte Reifendruck erreicht ist, was beispielsweise
durch einen entsprechenden Sensor festgestellt werden kann, wird
die Leitung
Für
die Funktionssicherheit der Dichtungsvorrichtung
Das zuvor Beschriebene gilt mutatis mutandis auch für den umgekehrten Fall, wenn während der Fahrt Luft aus dem Reifen entnommen und beispielsweise einem Druckluftspeicher zugeführt werden soll.The previously described applies mutatis mutandis to the reverse Fall when air is removed from the tire while driving and for example supplied to a compressed air reservoir should.
Die
Ausführungsform gemäß
Die
inneren Formteile
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - EP 0521719 A1 [0002] - EP 0521719 A1 [0002]
- - EP 0656267 B1 [0002] EP 0656267 B1 [0002]
- - DE 10019641 A1 [0002] - DE 10019641 A1 [0002]
- - DE 10309591 A1 [0002] - DE 10309591 A1 [0002]
- - DE 10324410 A1 [0002] - DE 10324410 A1 [0002]
- - EP 1607241 A1 [0002] EP 1607241 A1 [0002]
- - EP 1671816 A1 [0002] - EP 1671816 A1 [0002]
- - DE 19545172 C2 [0017] - DE 19545172 C2 [0017]
- - DE 29818952 U1 [0018] DE 29818952 U1 [0018]
Claims (16)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007054887A DE102007054887A1 (en) | 2007-11-15 | 2007-11-15 | Sealing device for e.g. rim of wheel of heaviest commercial motor vehicle, has ring seals with inner sealing rings held in prestressed manner and pressed to appropriate counter surfaces by positive pressure lying in chamber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007054887A DE102007054887A1 (en) | 2007-11-15 | 2007-11-15 | Sealing device for e.g. rim of wheel of heaviest commercial motor vehicle, has ring seals with inner sealing rings held in prestressed manner and pressed to appropriate counter surfaces by positive pressure lying in chamber |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007054887A1 true DE102007054887A1 (en) | 2009-06-04 |
Family
ID=40585672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007054887A Ceased DE102007054887A1 (en) | 2007-11-15 | 2007-11-15 | Sealing device for e.g. rim of wheel of heaviest commercial motor vehicle, has ring seals with inner sealing rings held in prestressed manner and pressed to appropriate counter surfaces by positive pressure lying in chamber |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102007054887A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2308698A3 (en) * | 2009-10-08 | 2011-09-14 | CLAAS Industrietechnik GmbH | Tyre pressure regulator with rotary feed-through and valve assembly |
WO2014177139A1 (en) * | 2013-04-30 | 2014-11-06 | Schaeffler Technologies Gmbh & Co. Kg | Bearing having a rotary feed-through |
WO2019101686A1 (en) * | 2017-11-21 | 2019-05-31 | Schaeffler Technologies AG & Co. KG | Seal assembly for a rotary feed-through of a wheel bearing of a motor vehicle |
WO2019137572A1 (en) * | 2018-01-15 | 2019-07-18 | Schaeffler Technologies AG & Co. KG | Wheel bearing for a motor vehicle wheel |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0521719A1 (en) | 1991-07-05 | 1993-01-07 | Eaton Corporation | Drive axle sleeve and seal assembly |
EP0656267B1 (en) | 1993-12-01 | 1998-04-29 | Skf France | Roller bearing equipped with a fluid tight passage device |
DE29818952U1 (en) | 1997-09-15 | 1999-01-14 | Dichtungstechnik G. Bruss GmbH & Co KG, 22955 Hoisdorf | Shaft seal |
DE19545172C2 (en) | 1995-12-04 | 1999-09-23 | Bruss Dichtungstechnik | Compact seal |
DE10019641A1 (en) | 2000-04-19 | 2001-11-08 | Freudenberg Carl Fa | Sealing arrangement |
DE10309591A1 (en) | 2002-03-06 | 2003-09-18 | Skf Ind Spa | Device for introducing compressed air into the pneumatic tire of a vehicle wheel via the hub comprises a sealing device inserted between a first and a second ring to form an intermediate chamber connecting a first and a second air channel |
DE10324410A1 (en) | 2002-05-31 | 2003-12-24 | Skf Ind Spa | Bearing unit for the wheel hub of a vehicle, which is equipped with a tire inflation system |
DE10044885B4 (en) * | 2000-09-12 | 2004-08-05 | Gkn Walterscheid Gmbh | Device for filling or deflating the tire of a vehicle, in particular a tractor |
DE102004021161A1 (en) * | 2004-04-29 | 2005-11-24 | Kessler & Co. Gmbh & Co. Kg | System for passage of compressed air between the interior of a rotating vehicle tire and a nonrotating tire pressure control unit incorporates air channels and switchable sealing rings |
EP1607241A1 (en) | 2004-06-15 | 2005-12-21 | S.N.R. Roulements | Roller bearing with air passage in a bore provided with grooves |
EP1671816A1 (en) | 2004-12-15 | 2006-06-21 | Aktiebolaget SKF | A bearing unit for the hub of a motor vehicle wheel |
-
2007
- 2007-11-15 DE DE102007054887A patent/DE102007054887A1/en not_active Ceased
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0521719A1 (en) | 1991-07-05 | 1993-01-07 | Eaton Corporation | Drive axle sleeve and seal assembly |
EP0656267B1 (en) | 1993-12-01 | 1998-04-29 | Skf France | Roller bearing equipped with a fluid tight passage device |
DE19545172C2 (en) | 1995-12-04 | 1999-09-23 | Bruss Dichtungstechnik | Compact seal |
DE29818952U1 (en) | 1997-09-15 | 1999-01-14 | Dichtungstechnik G. Bruss GmbH & Co KG, 22955 Hoisdorf | Shaft seal |
DE10019641A1 (en) | 2000-04-19 | 2001-11-08 | Freudenberg Carl Fa | Sealing arrangement |
DE10044885B4 (en) * | 2000-09-12 | 2004-08-05 | Gkn Walterscheid Gmbh | Device for filling or deflating the tire of a vehicle, in particular a tractor |
DE10309591A1 (en) | 2002-03-06 | 2003-09-18 | Skf Ind Spa | Device for introducing compressed air into the pneumatic tire of a vehicle wheel via the hub comprises a sealing device inserted between a first and a second ring to form an intermediate chamber connecting a first and a second air channel |
DE10324410A1 (en) | 2002-05-31 | 2003-12-24 | Skf Ind Spa | Bearing unit for the wheel hub of a vehicle, which is equipped with a tire inflation system |
DE102004021161A1 (en) * | 2004-04-29 | 2005-11-24 | Kessler & Co. Gmbh & Co. Kg | System for passage of compressed air between the interior of a rotating vehicle tire and a nonrotating tire pressure control unit incorporates air channels and switchable sealing rings |
EP1607241A1 (en) | 2004-06-15 | 2005-12-21 | S.N.R. Roulements | Roller bearing with air passage in a bore provided with grooves |
EP1671816A1 (en) | 2004-12-15 | 2006-06-21 | Aktiebolaget SKF | A bearing unit for the hub of a motor vehicle wheel |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2308698A3 (en) * | 2009-10-08 | 2011-09-14 | CLAAS Industrietechnik GmbH | Tyre pressure regulator with rotary feed-through and valve assembly |
WO2014177139A1 (en) * | 2013-04-30 | 2014-11-06 | Schaeffler Technologies Gmbh & Co. Kg | Bearing having a rotary feed-through |
DE102013207855B4 (en) * | 2013-04-30 | 2021-02-11 | Schaeffler Technologies AG & Co. KG | Bearings with a rotary feedthrough and a tire pressure control system with such a bearing |
WO2019101686A1 (en) * | 2017-11-21 | 2019-05-31 | Schaeffler Technologies AG & Co. KG | Seal assembly for a rotary feed-through of a wheel bearing of a motor vehicle |
WO2019137572A1 (en) * | 2018-01-15 | 2019-07-18 | Schaeffler Technologies AG & Co. KG | Wheel bearing for a motor vehicle wheel |
DE102018100750B4 (en) | 2018-01-15 | 2022-04-28 | Schaeffler Technologies AG & Co. KG | Wheel bearing for mounting a motor vehicle tire of a motor vehicle |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
OP8 | Request for examination as to paragraph 44 patent law | ||
R002 | Refusal decision in examination/registration proceedings | ||
8131 | Rejection | ||
R003 | Refusal decision now final |
Effective date: 20110315 |