DE102009034402A1 - Hydraulic cylinder i.e. master cylinder, for hydraulic release system, that is utilized for actuating clutch of motor vehicle, has annular sealing-/stripping element between piston and housing, and formed as single piece at piston - Google Patents
Hydraulic cylinder i.e. master cylinder, for hydraulic release system, that is utilized for actuating clutch of motor vehicle, has annular sealing-/stripping element between piston and housing, and formed as single piece at piston Download PDFInfo
- Publication number
- DE102009034402A1 DE102009034402A1 DE102009034402A DE102009034402A DE102009034402A1 DE 102009034402 A1 DE102009034402 A1 DE 102009034402A1 DE 102009034402 A DE102009034402 A DE 102009034402A DE 102009034402 A DE102009034402 A DE 102009034402A DE 102009034402 A1 DE102009034402 A1 DE 102009034402A1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- sealing
- stripping element
- hydraulic cylinder
- hydraulic
- 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- Withdrawn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
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- 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
-
- 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
- F16D25/088—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members being distinctly separate from the axis of rotation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
- F15B7/06—Details
- F15B7/08—Input units; Master units
-
- 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
- F16D2025/081—Hydraulic devices that initiate movement of pistons in slave cylinders for actuating clutches, i.e. master cylinders
-
- 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
Abstract
Description
Die Erfindung betrifft einen Hydraulikzylinder mit einem in einem Zylindergehäuse geführten und mittels einer Kolbenstange bewegbaren Kolben und mit wenigstens einem zwischen Kolben und Zylindergehäuse vorgesehenen Dicht-/Abstreifelement.The The invention relates to a hydraulic cylinder with a in a cylinder housing guided and movable by a piston rod piston and at least one between the piston and the cylinder housing provided sealing / wiping element.
Gattungsgemäße Hydraulikzylinder finden beispielsweise in Kupplungsausrücksystemen zur Betätigung einer Kupplung eines Kraftfahrzeuges Anwendung. Ein in Kupplungsausrücksystemen eingesetzter Geberzylinder umfasst einen Kolben, der in einem mit Fluid durchströmbaren Zylindergehäuse geführt und über eine Kolbenstange bewegbar ist. Üblicherweise ist das Zylindergehäuse aus Kunststoff gefertigt und weist einen Zulaufanschluss und einen Druckanschluss sowie einen als Sackloch gestalteten Druckraum auf, in dem der Kolben axial verschiebbar angeordnet ist. Der Druckraum wird durch eine Führungshülse gebildet, welche den Kolben umschließt. An einem Ende ist der Kolben mit der Kolbenstange verbunden, durch die der Kolben betätigt wird. Dabei besteht insbesondere im Bereich des der Kolbenstange zugewandten Endes des Kolbens die Gefahr, dass Schmutzpartikel in den Druckraum gelangen können. Dies kann zu Beschädigungen an den Reibflächen zwischen dem Kolben und der Innenwand der Führungshülse und somit zu Betriebsstörungen bei den bekannten Hydraulikzylindern führen.generic Hydraulic cylinders find, for example, in Kupplungsausrücksystemen for actuating a clutch of a motor vehicle application. A master cylinder used in clutch release systems comprises a piston which can be flowed through in a fluid Cylinder housing guided and over a Piston rod is movable. Usually, the cylinder housing made of plastic and has an inlet connection and a Pressure connection and designed as a blind hole pressure chamber, in which the piston is arranged axially displaceable. The pressure room is formed by a guide sleeve which enclosing the piston. At one end is the piston with connected to the piston rod through which the piston is actuated. In this case, in particular in the region of the piston rod facing At the end of the piston there is a risk of dirt particles in the pressure chamber can reach. This can damage the Friction surfaces between the piston and the inner wall of the guide sleeve and thus to malfunction in the known hydraulic cylinders to lead.
Aus
dem Stand der Technik sind Lösungen bekannt, die diesen
Nachteil beseitigen und ein Eindringen von Schmutzpartikeln in den
Druckraum verhindern sollen. Zu diesem Zweck weisen gattungsgemäße
Hydraulikzylinder Dichtelemente auf, die neben einer Abdichtung
zwischen der Umfangsfläche des beweglichen Kolbens bzw.
der Kolbenstange und einer zylindrischen Fläche des ortsfesten
Zylindergehäuses auch als Abstreifelement fungieren. Ein derartiger
Dicht- und Abstreifring wird beispielsweise in
Aus
Auch
die in
Ein
aus
Die Aufgabe der Erfindung besteht darin, einen gattungsgemäßen Hydraulikzylinder zu entwickeln, der sich durch eine bauraum- und gewichtsreduzierte Bauweise und funktionssichere Arbeitsweise auszeichnet sowie einen geringen Fertigungsaufwand aufweist.The The object of the invention is a generic Hydraulic cylinder to develop, which is characterized by a space and Weight-reduced design and functionally reliable operation is characterized and has a low production cost.
Diese Aufgabe wird mit einem Hydraulikzylinder mit den Merkmalen des ersten Patentanspruchs gelöst. Vorteilhafte Ausbildungen ergeben sich aus den Unteransprüchen.These Task is with a hydraulic cylinder with the characteristics of the first Patent claim solved. Advantageous training results from the dependent claims.
Erfindungsgemäß ist das Dicht-/Abstreifelement einstückig an den Kolben angeformt. Dabei ist das Dicht/Abstreifelement vorzugsweise durch Spritzgießen an den Kolben angeformt. Der Kolben und das Dicht-/Abstreifelement sind in einem Zwei-Phasen-Spritzgießverfahren hergestellt. Der Kolben besteht vorzugsweise aus dem Werkstoff Vyncolit und das Dicht-/Abstreifelement aus dem Werkstoff EPDM.According to the invention the sealing / stripping element integrally formed on the piston. In this case, the sealing / wiping element is preferably by injection molding formed on the piston. The piston and the sealing / wiping element are manufactured in a two-phase injection molding process. The piston is preferably made of the material Vyncolit and the Sealing / scraper element made of EPDM material.
Das Dicht-/Abstreifelement ist ringförmig ausgebildet, wobei das Dicht-/Abstreifelement nahe dem kolbenstangenseitigen Ende des Kolbens an den Kolben angeformt ist. Der Innendurchmesser des Dicht-/Abstreifelementes ist kleiner als der Durchmesser des Kolbens und der Außendurchmesser des Dicht-/Abstreifelementes ist etwas größer als der Durchmesser des Kolbens. An dem Außendurchmesser des Dicht-/Abstreifelementes ist eine als Abstreifkante ausgebildete Durchmesservergrößerung vorgesehen. Vorzugsweise ist der Hydraulikzylinder ein Geberzylinder eines hydraulischen Ausrücksystems.The sealing / stripping element is annular, wherein the sealing / stripping element is formed near the piston rod end of the piston to the piston. The inner diameter of the sealing / stripping element is smaller than the diameter of the piston and the outer diameter of the sealing / stripping element is slightly larger than the diameter of the piston. At the outer diameter of the sealing / stripping element, a diameter enlargement designed as a scraping edge is provided. Preferably, the hydraulic cylinder is a master cylinder of a hydraulic Ausrücksys tems.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispieles näher erläutert.The Invention will be described below with reference to an embodiment explained in more detail.
Es zeigen:It demonstrate:
In
In
an sich bekannter Art und Weise wird in einem Zylindergehäuse
Nahe
der Aufnahme
Als
Werkstoff findet der Kunststoff EPDM für das Dicht-/Abstreifelement
Das
Dicht-/Abstreifelement
Die
Herstellung des Hydraulikzylinders mit dem Kolben
Voraussetzung
für den Erhalt eines einzigen, aus zwei Komponenten bestehenden
Bauteiles (Kolben
Der
im Ergebnis des Fertigungsprozesses erhaltene Kolben
Durch
die Ausbildung des Kolbens
- 11
- Zylindergehäusecylinder housing
- 22
- Kolbenpiston
- 2.12.1
- Aufnahme für Kolbenstangeadmission for piston rod
- 33
- Kolbenstangepiston rod
- 44
- Dicht-/AbstreifelementSealing / stripping element
- 4.14.1
- Abstreifkantestripping
- DD
- Außendurchmesser des Dicht-/Abstreifelementesouter diameter of the sealing / stripping element
- dd
- Innendurchmesser des Dicht-/AbstreifelementesInner diameter of the sealing / stripping element
- Kdkd
- Durchmesser des Kolbensdiameter of the piston
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
- - DE 3601746 C2 [0003] - DE 3601746 C2 [0003]
- - DE 4435260 A1 [0004] - DE 4435260 A1 [0004]
- - DE 69611891 T2 [0005] - DE 69611891 T2 [0005]
- - DE 102005041418 A1 [0006] DE 102005041418 A1 [0006]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009034402A DE102009034402A1 (en) | 2008-08-04 | 2009-07-23 | Hydraulic cylinder i.e. master cylinder, for hydraulic release system, that is utilized for actuating clutch of motor vehicle, has annular sealing-/stripping element between piston and housing, and formed as single piece at piston |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008036333.2 | 2008-08-04 | ||
DE102008036333 | 2008-08-04 | ||
DE102009034402A DE102009034402A1 (en) | 2008-08-04 | 2009-07-23 | Hydraulic cylinder i.e. master cylinder, for hydraulic release system, that is utilized for actuating clutch of motor vehicle, has annular sealing-/stripping element between piston and housing, and formed as single piece at piston |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009034402A1 true DE102009034402A1 (en) | 2010-02-25 |
Family
ID=41566977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009034402A Withdrawn DE102009034402A1 (en) | 2008-08-04 | 2009-07-23 | Hydraulic cylinder i.e. master cylinder, for hydraulic release system, that is utilized for actuating clutch of motor vehicle, has annular sealing-/stripping element between piston and housing, and formed as single piece at piston |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102009034402A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011007643A1 (en) * | 2011-04-19 | 2012-10-25 | Gustav Magenwirth Gmbh & Co. Kg | Encoder for hydraulic actuator of disk brake of bicycle, has clamping unit that is formed at internal cross-section of handlebar by inner wedging |
DE102020112629A1 (en) | 2020-05-11 | 2021-11-11 | Schaeffler Technologies AG & Co. KG | Master cylinder |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4435260A1 (en) | 1993-10-13 | 1995-04-20 | Schaeffler Waelzlager Kg | Master cylinder |
DE3601746C2 (en) | 1985-04-13 | 1995-11-16 | Festo Kg | Sealing and wiper ring for a piston-cylinder arrangement |
DE69611891T2 (en) | 1995-12-05 | 2001-07-19 | Valeo | Hydraulic motor vehicle clutch actuation incorporating a cylinder with a metallic piston |
DE102005041418A1 (en) | 2004-09-17 | 2006-03-30 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulic master cylinder for motor vehicle clutch actuator has piston with movable seal assembly formed by lipped seal ring |
-
2009
- 2009-07-23 DE DE102009034402A patent/DE102009034402A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3601746C2 (en) | 1985-04-13 | 1995-11-16 | Festo Kg | Sealing and wiper ring for a piston-cylinder arrangement |
DE4435260A1 (en) | 1993-10-13 | 1995-04-20 | Schaeffler Waelzlager Kg | Master cylinder |
DE69611891T2 (en) | 1995-12-05 | 2001-07-19 | Valeo | Hydraulic motor vehicle clutch actuation incorporating a cylinder with a metallic piston |
DE102005041418A1 (en) | 2004-09-17 | 2006-03-30 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydraulic master cylinder for motor vehicle clutch actuator has piston with movable seal assembly formed by lipped seal ring |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011007643A1 (en) * | 2011-04-19 | 2012-10-25 | Gustav Magenwirth Gmbh & Co. Kg | Encoder for hydraulic actuator of disk brake of bicycle, has clamping unit that is formed at internal cross-section of handlebar by inner wedging |
DE102020112629A1 (en) | 2020-05-11 | 2021-11-11 | Schaeffler Technologies AG & Co. KG | Master cylinder |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 H, DE |
|
R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120824 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120824 |
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R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140213 Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140213 |
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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: 20150126 |
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R005 | Application deemed withdrawn due to failure to request examination |