DE102012210845A1 - Concentric slave cylinder for use in e.g. hydraulic disengaging system of single-friction clutch of motor car, has stripping element including outer and inner stripping regions, which are formed by separate stripping ring - Google Patents
Concentric slave cylinder for use in e.g. hydraulic disengaging system of single-friction clutch of motor car, has stripping element including outer and inner stripping regions, which are formed by separate stripping ring Download PDFInfo
- Publication number
- DE102012210845A1 DE102012210845A1 DE201210210845 DE102012210845A DE102012210845A1 DE 102012210845 A1 DE102012210845 A1 DE 102012210845A1 DE 201210210845 DE201210210845 DE 201210210845 DE 102012210845 A DE102012210845 A DE 102012210845A DE 102012210845 A1 DE102012210845 A1 DE 102012210845A1
- Authority
- DE
- Germany
- Prior art keywords
- slave cylinder
- stripping
- piston
- scraper
- cylinder according
- 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.)
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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
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- 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
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- 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
- F16J15/56—Other sealings for reciprocating rods
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- 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
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
Die Erfindung betrifft einen Nehmerzylinder, insbesondere für eine Kupplungs- oder Bremsbetätigungseinrichtung, mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a slave cylinder, in particular for a clutch or brake actuator, with the features of the preamble of
Bei gattungsgemäßen konzentrischen Nehmerzylindern (Concentric Slave Cylinder – CSC) steht ein ringförmiger Kolben in einem engen Kontakt mit einer zwischen einer inneren und einer äußeren Zylinderwand eines Zylinderkörpers/Zylindergehäuses definierten Bohrung. Dadurch wird eine ringförmige Betätigungskammer geschaffen, in die ein Fluid eingeleitet werden kann, um den Kolben gegenüber dem Zylinder zu verschieben und so ein am Kolben oder Zylinder angeordnetes Ausrücklager zu bewegen. Üblicherweise ist am druckraumseitigen Ende des ringförmigen Kolbens eine Dichtung angeordnet, die den Druckraum (die ringförmige Betätigungskammer) zu seiner Umgebung hin abdichtet. Zur Vermeidung von Schmutzeintrag auf die jeweilige Lauffläche des Kolbens sind neben der Dichtung häufig auch Abstreifelemente vorgesehen, die während der Bewegung des Kolbens ein Eindringen von Partikeln aus der Umgebung verhindern bzw. diese wieder abstreifen sollen. In generic Concentric Slave Cylinders (CSC), an annular piston is in close contact with a defined between an inner and an outer cylinder wall of a cylinder body / cylinder housing bore. This provides an annular actuation chamber into which fluid can be introduced to displace the piston relative to the cylinder to move a release bearing disposed on the piston or cylinder. Usually, a seal is arranged at the pressure-chamber-side end of the annular piston, which seals the pressure space (the annular actuating chamber) to its surroundings. In order to prevent the entry of dirt on the respective running surface of the piston, scraper elements are frequently provided in addition to the seal, which during the movement of the piston prevent the penetration of particles from the surroundings or should strip them off again.
Zudem kann es insbesondere bei der Rückhubbewegung des Kolbens zu einem unerwünschten Nachfließen des Fluids/Öls aus dem Kupplungsraum der Nehmerzylindereinheit in den Druckraum kommen. Der Grund hierfür ist eine mangelhafte Abdichtung/Abstreifung an den Führungs-/Gleitflächen von Kolben und Zylindergehäuse, wodurch während der Vorhubbewegung des Kolbens das dort befindliche Öl nicht ausreichend zurückgedrängt wird. Bei der Rückhubbewegung des Kolbens gelangt dieses Öl in den Druckraum. So kommt es mit der Zeit zu einer ungewollten Befüllung des Druckmittelreservoirs, welches immer wieder entleert werden muss. Ein an den Gleitflächen befindlicher Ölfilm wird zwar benötigt, um ausreichend gute tribologische Bedingungen zu erzielen. Er sollte aber möglichst dünn sein, um ein Nachfließen des Öls und somit eine Befüllung des Reservoirs so gering wie möglich zu halten. Das an den Gleitflächen von Kolben und Zylindergehäuse vorhandene überschüssige Öl muss deshalb ebenfalls entfernt werden.In addition, in particular during the return stroke movement of the piston, an undesired subsequent flow of the fluid / oil out of the clutch space of the slave cylinder unit into the pressure chamber may occur. The reason for this is a poor seal / Abstreifung on the guide / sliding surfaces of the piston and the cylinder housing, which during the Vorhubbewegung the piston, the oil there is not sufficiently pushed back. During the return stroke of the piston, this oil enters the pressure chamber. So it comes with time to an unwanted filling of the pressure medium reservoir, which must be emptied again and again. Although an oil film located on the sliding surfaces is required in order to achieve sufficiently good tribological conditions. However, it should be as thin as possible in order to keep the oil flowing in and thus filling the reservoir as low as possible. The existing on the sliding surfaces of the piston and cylinder housing excess oil must therefore also be removed.
Aus der
Die
In der
Die Aufgabe der Erfindung besteht darin, einen Nehmerzylinder, insbesondere für eine Kupplungs- und Bremsbetätigungseinrichtung, zu schaffen, bei welchem ein einfach und kostengünstig herzustellendes sowie leicht zu montierendes Abstreifelement eingesetzt wird, das insbesondere die Funktion der Beseitigung eines Überschusses an Öl zwischen dem Kolben und dem Zylindergehäuse/Zylinderkörper optimal erfüllt.The object of the invention is a slave cylinder, in particular for a clutch and brake actuator to create, in which a simple and inexpensive to produce and easy to install scraper element is used, which optimally fulfills in particular the function of removing an excess of oil between the piston and the cylinder housing / cylinder body.
Die Aufgabe wird mit den Merkmalen des ersten Anspruchs gelöst. Weitere vorteilhafte Ausgestaltungen ergeben sich aus den Unteransprüchen.The object is achieved with the features of the first claim. Further advantageous embodiments will be apparent from the dependent claims.
Bei einem Nehmerzylinder, insbesondere für eine Kupplungs- oder Bremsbetätigungseinrichtung, mit einem in einem ringförmigen Druckraum eines Zylinderkörpers durch ein dem Druckraum zuführbares Druckfluid axial bewegbaren ringförmigen Kolben, welcher druckraumseitig mit einer Dichtung versehen ist, wobei der Druckraum zwischen einem äußeren ringförmigen Zylinderkörperbereich und einem inneren ringförmigen Zylinderkörperbereich gebildet ist, und zumindest ein Abstreifelement angeordnet ist, welches einen am Innenumfang des äußeren Zylinderkörperbereiches anliegenden äußeren Abstreifbereich und einen am Außenumfang des inneren Zylinderkörperbereiches anliegenden inneren Abstreifbereich aufweist, sind erfindungsgemäß der äußere Abstreifbereich und der innere Abstreifbereich jeweils von einem separaten Abstreifring gebildet. Dabei sind die Abstreifringe an dem Kolben und/oder an der Dichtung angeordnet. Die Abstreifringe können aber auch an dem Kolben und/oder an einem die Dichtung aufnehmenden Dichtungsträger angeordnet sein. In einer vorteilhaften Ausführung sind die Abstreifringe jeweils in einer an dem druckraumseitigen Ende des Kolbens radial umlaufend eingebrachten Nut angeordnet, wobei sich der äußere Abstreifring in einer an dem Kolben radial außen umlaufenden Nut und der innere Abstreifring in einer an dem Kolben radial innen umlaufenden Nut befinden. In vorteilhafter Weise liegen die Abstreifringe in radialer Richtung jeweils an dem komplementären Zylinderkörperbereich und in axialer Richtung an dem Dichtungsträger an. In einer weiteren vorteilhaften Ausführung sind die Abstreifringe jeweils in einer an dem Dichtungsträgers radial umlaufend eingebrachten Nut angeordnet. Der äußere Abstreifring und der innere Abstreifring weisen in Umfangsrichtung jeweils eine Unterbrechung auf. Außerdem haben die Abstreifringe im nicht montierten Zustand vorzugsweise eine unrunde Form und besitzen erst im eingebauten Zustand eine runde Form.In a slave cylinder, in particular for a clutch or brake actuator, with an annular piston in an annular pressure chamber of a cylinder body by a pressure fluid feedable pressure fluid axially movable annular piston which is provided on the pressure chamber side with a seal, wherein the pressure space between an outer annular cylindrical body portion and an inner Is formed annular cylindrical body portion, and at least one scraper element is arranged, which has a voltage applied to the inner circumference of the outer cylinder body portion outer scraper region and an outer circumference of the inner cylindrical body portion inner scraper region, the outer scraper region and the inner scraper each of a separate scraper ring are formed according to the invention. The scraper rings are arranged on the piston and / or on the seal. However, the scraper rings can also be arranged on the piston and / or on a seal carrier receiving the seal. In an advantageous embodiment, the scraper rings are each arranged in a radially encircling introduced at the pressure chamber side end of the piston groove, wherein the outer scraper ring in a piston on the piston radially outwardly circumferential groove and the inner scraper ring in a radially on the piston circumferential inside groove , In an advantageous manner, the scraper rings lie in the radial direction on the complementary cylinder body region and in the axial direction on the seal carrier. In a further advantageous embodiment, the scraper rings are each arranged in a radially circumferentially introduced groove on the seal carrier. The outer scraper ring and the inner scraper ring each have an interruption in the circumferential direction. In addition, the scraper rings in the unassembled state preferably have a non-circular shape and only have a round shape when installed.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispiels und zugehöriger Zeichnungen näher erläutert. Es zeigen:The invention is explained below with reference to an embodiment and associated drawings. Show it:
Auf die an sich bekannte Wirkungsweise des Nehmerzylinders soll hier nicht näher eingegangen werden. Durch den Einsatz der erfindungsgemäßen Abstreifringe
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Zylinderkörper/Zylindergehäuse Cylinder body / cylinder housing
- 1.11.1
- äußerer Zylinderkörperbereich outer cylinder body area
- 1.21.2
- innerer Zylinderkörperbereich inner cylinder body area
- 22
- Druckraum pressure chamber
- 33
- Kolben piston
- 3.13.1
- äußere Nut outer groove
- 3.23.2
- innere Nut inner groove
- 44
- Dichtung poetry
- 55
- Dichtungsträger seal carrier
- 66
- Abstreifelement stripping element
- 6.16.1
- äußerer Abstreifbereich/äußerer Abstreifring outer stripping area / outer scraper ring
- 6.26.2
- innerer Abstreifbereich/innerer Abstreifring inner stripping area / inner scraper ring
- AA
- Rotationsachse axis of rotation
- aa
- Unterbrechung interruption
- bb
- Unterbrechung interruption
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102009016297 A1 [0004] DE 102009016297 A1 [0004]
- DE 102008009655 A1 [0005] DE 102008009655 A1 [0005]
- DE 102009018573 A1 [0006] DE 102009018573 A1 [0006]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210210845 DE102012210845A1 (en) | 2012-06-26 | 2012-06-26 | Concentric slave cylinder for use in e.g. hydraulic disengaging system of single-friction clutch of motor car, has stripping element including outer and inner stripping regions, which are formed by separate stripping ring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210210845 DE102012210845A1 (en) | 2012-06-26 | 2012-06-26 | Concentric slave cylinder for use in e.g. hydraulic disengaging system of single-friction clutch of motor car, has stripping element including outer and inner stripping regions, which are formed by separate stripping ring |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102012210845A1 true DE102012210845A1 (en) | 2014-01-02 |
Family
ID=49754042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201210210845 Withdrawn DE102012210845A1 (en) | 2012-06-26 | 2012-06-26 | Concentric slave cylinder for use in e.g. hydraulic disengaging system of single-friction clutch of motor car, has stripping element including outer and inner stripping regions, which are formed by separate stripping ring |
Country Status (1)
Country | Link |
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DE (1) | DE102012210845A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015128309A1 (en) * | 2014-02-25 | 2015-09-03 | Heindl Energy Gmbh | Potential energy store with seal |
EP3683466A1 (en) * | 2019-01-21 | 2020-07-22 | FTE automotive GmbH | Central actuator for a hydraulic or pneumatic clutch activation |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008009655A1 (en) | 2007-03-12 | 2008-09-18 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | slave cylinder |
DE102009016297A1 (en) | 2008-04-14 | 2009-10-22 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Seal i.e. lip-seal, for e.g. piston-slave cylinder arrangement in hydraulic line for brake actuation, has base body whose width in area of front surface of base body corresponds to distance between two parallel sealing surfaces |
DE102009018573A1 (en) | 2008-05-13 | 2009-11-19 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Slave cylinder arrangement for e.g. clutch operating device, has stripping unit arranged between sealing unit and piston and comprising areas lying at inner and outer circumferences of outer body area and inner body area, respectively |
-
2012
- 2012-06-26 DE DE201210210845 patent/DE102012210845A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008009655A1 (en) | 2007-03-12 | 2008-09-18 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | slave cylinder |
DE102009016297A1 (en) | 2008-04-14 | 2009-10-22 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Seal i.e. lip-seal, for e.g. piston-slave cylinder arrangement in hydraulic line for brake actuation, has base body whose width in area of front surface of base body corresponds to distance between two parallel sealing surfaces |
DE102009018573A1 (en) | 2008-05-13 | 2009-11-19 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Slave cylinder arrangement for e.g. clutch operating device, has stripping unit arranged between sealing unit and piston and comprising areas lying at inner and outer circumferences of outer body area and inner body area, respectively |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015128309A1 (en) * | 2014-02-25 | 2015-09-03 | Heindl Energy Gmbh | Potential energy store with seal |
US10233897B2 (en) | 2014-02-25 | 2019-03-19 | Heindl Energy Gmbh | Potential energy store with seal |
EP3683466A1 (en) * | 2019-01-21 | 2020-07-22 | FTE automotive GmbH | Central actuator for a hydraulic or pneumatic clutch activation |
DE102019101452A1 (en) * | 2019-01-21 | 2020-07-23 | Fte Automotive Gmbh | Central actuator for hydraulic or pneumatic clutch actuation |
CN111457018A (en) * | 2019-01-21 | 2020-07-28 | Fte汽车有限责任公司 | Central actuator for hydraulic or pneumatic clutch actuation |
CN111457018B (en) * | 2019-01-21 | 2024-01-30 | Fte汽车有限责任公司 | Central actuator for hydraulic or pneumatic clutch actuation |
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R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140214 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140214 |
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R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20150407 |
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