DE10314962A1 - Seal for operating unit such as friction clutch has sealing lip sealing working chamber, and wiper axially spaced away from it, with seal fitted in slot, and in annular chamber between wiper and sealing lip has lubricant filling - Google Patents
Seal for operating unit such as friction clutch has sealing lip sealing working chamber, and wiper axially spaced away from it, with seal fitted in slot, and in annular chamber between wiper and sealing lip has lubricant filling Download PDFInfo
- Publication number
- DE10314962A1 DE10314962A1 DE10314962A DE10314962A DE10314962A1 DE 10314962 A1 DE10314962 A1 DE 10314962A1 DE 10314962 A DE10314962 A DE 10314962A DE 10314962 A DE10314962 A DE 10314962A DE 10314962 A1 DE10314962 A1 DE 10314962A1
- Authority
- DE
- Germany
- Prior art keywords
- seal
- sealing lip
- groove
- wiper
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
- F16J15/3236—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
- F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
- F16D25/083—Actuators therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/324—Arrangements for lubrication or cooling of the sealing itself
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
- F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2300/00—Special features for couplings or clutches
- F16D2300/08—Details or arrangements of sealings not provided for in group F16D3/84
Abstract
Description
Die Erfindung betrifft eine Dichtung für eine Betätigungseinrichtung gemäß dem Oberbegriff von Patentanspruch 1.The The invention relates to a seal for an actuating device according to the preamble of claim 1.
Aus
der
Ein gravierender Nachteil dieser Konstruktion liegt im Preis. Metall-Elastomerverbindungsteile sind prinzipbedingt vergleichsweise teuer. Des weiteren muss der Dichtungsträger mit dem Kolben verbunden werden.On serious disadvantage of this construction is the price. Metal-elastomer connection parts are comparatively expensive in principle. Furthermore, the seal carrier must be included be connected to the piston.
Aufgabe der vorliegenden Erfindung ist es, eine Dichtung zu realisieren, die einfach in der Montage ist und eine große Langzeitdichtwirkung gewährleistet.task of the present invention is to realize a seal which is easy to install and ensures a great long-term sealing effect.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass die Dichtung eine den Arbeitsraum abdichtende Dichtlippe und einen axial dazu beabstandeten Abstreifer aufweist, wobei die Dichtung in einer Nut gekammert ist und in einem Ringraum zwischen dem Abstreifer und der abdichtenden Dichtlippe mit einer Schmierstofffüllung versehen ist.According to the Task solved by that the seal has a sealing lip that seals the work area and has an axially spaced wiper, the seal is chambered in a groove and in an annular space between the wipers and the sealing sealing lip with a lubricant filling is.
Die Nut kann im Kolben oder im Zylinder ausgeführt sein und ermöglicht eine vergleichsweise elastische Dichtung, die auch in der Lage ist, einen Ausgleich der Toleranzen von Zylinder und Führungshülse herzustellen. Innerhalb der Dichtung sind drei Dichtungselemente vereinigt. In Richtung der Umgebung ist der Abstreifer angeordnet, der vor allem Staubpartikel abhalten soll. Die elastische Dichtung soll den Arbeitsraum zuverlässig abdichten, wobei die Schmierstofffüllung zwischen dem Abstreifer und der Dichtlippe als weitere Barriere wirkt. Insbesondere bei einem gasförmigen Druckmedium im Arbeitsraum erfüllt die Schmierstofffüllung eine zusätzliche Dichtwirkung. Des weiteren unterstützt sie im gewissen Maße die Dichtlippe, die dadurch vergleichsweise weicher ausgeführt werden kann.The Groove can be carried out in the piston or in the cylinder and enables one comparatively elastic seal that is also able to compensate the tolerances of the cylinder and guide sleeve. Within the seal three sealing elements are combined. In the direction The scraper, which primarily contains dust particles, is arranged in the vicinity should hold. The elastic seal should reliably seal the work area, taking the lubricant filling between the scraper and the sealing lip as a further barrier acts. Especially with a gaseous pressure medium in the work area Fulfills the lubricant filling an additional Sealing effect. It also supports the sealing lip to a certain extent, which can be made comparatively softer.
Um auch über einen längeren Zeitraum einen ggf. auftretenden Schmierstoffverlust ausgleichen zu können, ist der mit einer Schmierstofffüllung versehene Ringraum mit mindestens einer Schmierstoffvorratstasche verbunden.Around also about a longer one Compensate for any loss of lubricant that may occur to be able is the one with a lubricant filling Annulus connected to at least one lubricant storage pocket.
Schmierstoffverluste können z. B. dann auftreten, wenn die Dichtlippe oder der Abstreifer besonders stark verformt werden. Deshalb ist vorgesehen, dass die Schmierstoffvorratstasche am Grund des Ringraums angeordnet ist. In diesem Bereich wirkt sich die Verformung der Dichtlippe oder des Abstreifers am geringsten auf das Volumen des Ringraums aus, so dass ein weiterer Verlust von Schmierstoff minimiert ist.lubricant losses can z. B. occur when the sealing lip or the scraper particularly be strongly deformed. It is therefore envisaged that the lubricant reservoir is arranged at the bottom of the annulus. In this area affects the least amount of deformation of the sealing lip or wiper on the volume of the annulus, making another loss of lubricant is minimized.
Bei einer ersten Ausführungsform kommt eine Mehrzahl von Schmierstoffvorratstaschen zur Anwendung, die durch in Axialrichtung der Dichtung verlaufende Stege getrennt werden. Die Stege stützen die Dichtlippe und den Abstreifer zusätzlich.at a first embodiment a variety of lubricant storage bags are used, separated by webs running in the axial direction of the seal become. Support the webs the sealing lip and the wiper.
Alternativ besteht die Möglichkeit, dass die Schmierstoffvorratstasche von mindestens einer konzentrisch zum Ringraum angeordneten Nut gebildet wird.alternative it is possible, that the lubricant supply pouch is concentric by at least one to the annular space arranged groove is formed.
In weiterer vorteilhafter Ausgestaltung weist die Dichtung eine Nutgrunddichtfläche auf, deren Rückseite zum Arbeitsraum ausgerichtet ist. Über die Rückseite der Nutgrunddichtfläche kann druckabhängig die Vorspannung der Dichtung innerhalb der Nut gesteigert werden.In a further advantageous embodiment, the seal has a groove base sealing surface, the back is oriented towards the work area. Over the back of the groove base sealing surface can pressure dependent the preload of the seal within the groove can be increased.
Derselbe Effekt wird auch für die Dichtlippe ausgenutzt, indem die Dichtlippe der Dichtung und die Rückseite zur Nutgrunddichtfläche durch einen in Richtung des Arbeitsraums ausgerichteten Ringgraben getrennt sind.the same Effect is also for exploited the sealing lip by the sealing lip of the seal and the back to the groove base sealing surface through a ring trench aligned in the direction of the work area are separated.
Gemäß einem vorteilhaften Unteranspruch ist zwischen dem Abstreifer und einer axialen Anschlagfläche der Dichtung in einer Nutseitenwand der Nut für die Dichtung eine umlaufende Vertiefung eingeformt. Aufgrund der Vertiefung verlängert sich der Abstreifer, so dass bei einer vorgegebenen Elastizität der Abstreifer etwas stärker ausgeführt werden kann, das sich positiv auf die Lebensdauer des Abstreifers auswirkt.According to one advantageous subclaim is between the scraper and one axial stop surface the seal in a groove side wall of the groove for the seal a circumferential Indentation. Due to the deepening, the Scraper, so that with a given elasticity the scraper a little bit stronger accomplished can be positive for the life of the wiper effect.
In diesem Sinne kann zusätzlich oder alternativ zwischen dem Abstreifer und der axialen Anschlagfläche ein axialer Versatz ausgeführt sein.In this sense can additionally or alternatively between the wiper and the axial stop surface axial offset executed his.
Damit für einen besonders lang ausgeführten Abstreifer eine genügende Bewegungsfreiheit besteht, ist an der Nutseitenwand unterhalb des Abstreifers eine Fase angeformt.In order to for one executed particularly long Scraper a sufficient There is freedom of movement on the groove side wall below the Scraper formed a chamfer.
Zur Vermeidung von Deformationen der gesamten Dichtung innerhalb der Nut ist die Breite der Nut größer als die axiale Erstreckung der Nutgrunddichtfläche.To avoid deformations of the ge entire seal within the groove, the width of the groove is greater than the axial extent of the groove basic sealing surface.
Anhand der folgenden Figurenbeschreibung soll die Erfindung näher erläutert werden.Based The invention is explained in more detail in the following description of the figures.
Es zeigt:It shows:
Die
Der
Kolben gleitet auf einer Führungshülse
Die
Dichtflächen
zwischen dem Kolben und dem Zylinder und dem Kolben und der Führunghülse werden
von Dichtungen
Wie
aus den
Wie
bereits beschrieben verfügen
beide Dichtungen
In
der
Die
Die
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10314962A DE10314962A1 (en) | 2003-04-02 | 2003-04-02 | Seal for operating unit such as friction clutch has sealing lip sealing working chamber, and wiper axially spaced away from it, with seal fitted in slot, and in annular chamber between wiper and sealing lip has lubricant filling |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10314962A DE10314962A1 (en) | 2003-04-02 | 2003-04-02 | Seal for operating unit such as friction clutch has sealing lip sealing working chamber, and wiper axially spaced away from it, with seal fitted in slot, and in annular chamber between wiper and sealing lip has lubricant filling |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10314962A1 true DE10314962A1 (en) | 2004-10-28 |
Family
ID=33038846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10314962A Withdrawn DE10314962A1 (en) | 2003-04-02 | 2003-04-02 | Seal for operating unit such as friction clutch has sealing lip sealing working chamber, and wiper axially spaced away from it, with seal fitted in slot, and in annular chamber between wiper and sealing lip has lubricant filling |
Country Status (1)
Country | Link |
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DE (1) | DE10314962A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007039921A1 (en) * | 2005-10-05 | 2007-04-12 | Gefran S.P.A. | Sensor |
DE102007043971A1 (en) * | 2007-09-14 | 2009-05-20 | Zf Friedrichshafen Ag | actuator |
WO2011103894A1 (en) * | 2010-02-24 | 2011-09-01 | Wabco Gmbh | Device comprising a ring cylinder and a ring piston |
WO2011103896A1 (en) * | 2010-02-24 | 2011-09-01 | Wabco Gmbh & Co. Ohg | Device comprising a ring cylinder and a ring piston |
WO2011113406A3 (en) * | 2010-03-15 | 2011-12-08 | Schaeffler Technologies Gmbh & Co. Kg | Slave cylinder |
CN103573608A (en) * | 2012-07-23 | 2014-02-12 | 罗伯特·博世有限公司 | Sealing ring for a pump element of a vehicle brake system |
DE102013219842A1 (en) | 2012-10-10 | 2014-04-10 | Schaeffler Technologies Gmbh & Co. Kg | Sealing arrangement for use in e.g. hydraulic disengaging system for central release of friction clutch of motor vehicle, has sealing element arranged between inner wall of piston and cylinder wall, where wall radially encircles groove |
DE102014009882A1 (en) * | 2014-07-03 | 2016-01-07 | Carl Freudenberg Kg | seal |
WO2018024283A1 (en) * | 2016-08-05 | 2018-02-08 | Schaeffler Technologies AG & Co. KG | Pressure cylinder having a shrink ring which serves as a seal for simple mounting on a guide sleeve region of a housing |
WO2018065013A1 (en) * | 2016-10-07 | 2018-04-12 | Schaeffler Technologies AG & Co. KG | Hydrostatic actuator with a split dynamic seal portion |
-
2003
- 2003-04-02 DE DE10314962A patent/DE10314962A1/en not_active Withdrawn
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007039921A1 (en) * | 2005-10-05 | 2007-04-12 | Gefran S.P.A. | Sensor |
DE102007043971A1 (en) * | 2007-09-14 | 2009-05-20 | Zf Friedrichshafen Ag | actuator |
WO2011103894A1 (en) * | 2010-02-24 | 2011-09-01 | Wabco Gmbh | Device comprising a ring cylinder and a ring piston |
WO2011103896A1 (en) * | 2010-02-24 | 2011-09-01 | Wabco Gmbh & Co. Ohg | Device comprising a ring cylinder and a ring piston |
CN102770679A (en) * | 2010-02-24 | 2012-11-07 | 威伯科有限公司 | Device comprising a ring cylinder and a ring piston |
CN102770678A (en) * | 2010-02-24 | 2012-11-07 | 威伯科有限公司 | Device comprising a ring cylinder and a ring piston |
CN102803772B (en) * | 2010-03-15 | 2015-08-19 | 舍弗勒技术股份两合公司 | Slave cylinder |
WO2011113406A3 (en) * | 2010-03-15 | 2011-12-08 | Schaeffler Technologies Gmbh & Co. Kg | Slave cylinder |
CN102803772A (en) * | 2010-03-15 | 2012-11-28 | 舍弗勒技术股份两合公司 | Slave cylinder |
DE112011100927B4 (en) * | 2010-03-15 | 2020-03-12 | Schaeffler Technologies AG & Co. KG | Slave cylinder for a hydraulic release system of a friction clutch of vehicles |
CN103573608A (en) * | 2012-07-23 | 2014-02-12 | 罗伯特·博世有限公司 | Sealing ring for a pump element of a vehicle brake system |
DE102013219842A1 (en) | 2012-10-10 | 2014-04-10 | Schaeffler Technologies Gmbh & Co. Kg | Sealing arrangement for use in e.g. hydraulic disengaging system for central release of friction clutch of motor vehicle, has sealing element arranged between inner wall of piston and cylinder wall, where wall radially encircles groove |
DE102014009882A1 (en) * | 2014-07-03 | 2016-01-07 | Carl Freudenberg Kg | seal |
WO2018024283A1 (en) * | 2016-08-05 | 2018-02-08 | Schaeffler Technologies AG & Co. KG | Pressure cylinder having a shrink ring which serves as a seal for simple mounting on a guide sleeve region of a housing |
CN109563889A (en) * | 2016-08-05 | 2019-04-02 | 舍弗勒技术股份两合公司 | Pressure cylinder with the contractile ring for being used as sealing ring for being simply assembled on the guide sleeve region of shell |
CN109563889B (en) * | 2016-08-05 | 2021-04-13 | 舍弗勒技术股份两合公司 | Pressure cylinder with a shrink ring as a sealing ring for simple assembly on a guide sleeve region of a housing |
WO2018065013A1 (en) * | 2016-10-07 | 2018-04-12 | Schaeffler Technologies AG & Co. KG | Hydrostatic actuator with a split dynamic seal portion |
CN109804174A (en) * | 2016-10-07 | 2019-05-24 | 舍弗勒技术股份两合公司 | With the hydrostatic actuator for being divided into two-part dynamic sealing section |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OR8 | Request for search as to paragraph 43 lit. 1 sentence 1 patent law | ||
8105 | Search report available | ||
8110 | Request for examination paragraph 44 | ||
R120 | Application withdrawn or ip right abandoned |
Effective date: 20110415 |