DE102007013529A1 - Hydraulic cylinder, particularly for hydraulic power steering in motor vehicle, has cylindrical shaped housing, which has casing section and discharge opening formed in casing section - Google Patents
Hydraulic cylinder, particularly for hydraulic power steering in motor vehicle, has cylindrical shaped housing, which has casing section and discharge opening formed in casing section Download PDFInfo
- Publication number
- DE102007013529A1 DE102007013529A1 DE102007013529A DE102007013529A DE102007013529A1 DE 102007013529 A1 DE102007013529 A1 DE 102007013529A1 DE 102007013529 A DE102007013529 A DE 102007013529A DE 102007013529 A DE102007013529 A DE 102007013529A DE 102007013529 A1 DE102007013529 A1 DE 102007013529A1
- Authority
- DE
- Germany
- Prior art keywords
- hydraulic cylinder
- cylinder according
- piston
- casing section
- air entrapment
- 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- Withdrawn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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/10—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of power unit
- B62D5/12—Piston and cylinder
-
- 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
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
Die Erfindung betrifft einen Hydraulikzylinder, insbesondere für eine hydraulische Hilfskraftlenkung in einem Kraftfahrzeug, mit einem im wesentlichen zylinderförmigen Gehäuse, das einen Mantelabschnitt aufweist, einem im Gehäuse axial verschiebbaren Kolben und wenigstens einer im Mantelabschnitt gebildeten Auslaßöffnung, wobei der Kolben über die Auslaßöffnung geschoben werden kann.The The invention relates to a hydraulic cylinder, in particular for a hydraulic power steering system in a motor vehicle, with a substantially cylindrical housing, which has a skirt portion, one in the housing axially displaceable piston and at least one formed in the shell portion Outlet opening, the piston over the outlet opening can be pushed.
Bei Hydraulikzylindern besteht allgemein das Problem, daß Lufteinschlüsse im Arbeitsmedium die Funktion des Hydraulikzylinders beeinträchtigen und außerdem zu einer unerwünschten Geräuschentwicklung führen. Die Lufteinschlüsse, die sich im oberen Bereich des Hydraulikzylinders sammeln, können grundsätzlich über die Druckanschlüsse des Hydraulikzylinders abgeführt werden. Bauraumbeschränkungen und besondere technische Anforderungen lassen jedoch in vielen Fällen keine Anordnung der Druckanschlüsse im oberen Bereich des Hydraulikzylinders zu, wodurch die Entlüftung des Hydraulikzylinders erschwert wird. Dies trifft insbesondere auf horizontal eingebaute Hydraulikzylinder für hydraulische Hilfskraftlenkungen zu.at Hydraulic cylinders generally has the problem that air pockets in the working medium affect the function of the hydraulic cylinder and also undesirable noise to lead. The air pockets that are in the upper Collect area of the hydraulic cylinder, basically over discharged the pressure ports of the hydraulic cylinder become. Space limitations and special technical Requirements, however, in many cases leave no order the pressure connections in the upper area of the hydraulic cylinder to, whereby the venting of the hydraulic cylinder difficult becomes. This applies in particular to horizontally installed hydraulic cylinders for hydraulic power steering systems too.
Zur
Lösung dieses Problems bei einem Bremsdruckzylinder schlägt
die gattungsbildende
Die Erfindung schafft eine alternative, kostengünstige Lösung zur Entlüftung eines Hydraulikzylinders, bei dem die Druckanschlüsse nicht im oberen Bereich angeordnet sind.The Invention provides an alternative, cost effective solution for venting a hydraulic cylinder, in which the pressure connections not arranged in the upper area.
Gemäß der Erfindung ist hierzu bei einem Hydraulikzylinder der eingangs genannten Art vorgesehen, daß der Kolben wenigstens einen Lufteinschlußkollektor aufweist. Im Gegensatz zu den bekannten Lösungen sind die Lufteinschlußkollektoren nicht fest im Hydraulikzylinder angebracht, sondern Teil des beweglichen Kolbens. Beim Verschieben des Kolbens über die Auslaßöffnungen werden die Lufteinschlüsse wie bei den bekannten Lösungen durch die Auslaßöffnungen abgeführt. Die erfindungsgemäße Konstruktion hat jedoch den Vorteil, daß der Kolben mit den Lufteinschlußkollektoren eine vormontierbare Baueinheit darstellt und als Ganzes in das Gehäuse des Hydraulikzylinders eingesetzt werden kann. Die bislang erforderliche separate Montage der Lufteinschlußkollektoren im Gehäuse entfällt.According to the Invention is for this purpose in a hydraulic cylinder of the aforementioned Art provided that the piston at least one air entrapment collector having. In contrast to the known solutions are the Air entrapment collectors not firmly in the hydraulic cylinder attached, but part of the moving piston. When moving of the piston via the outlet openings become the air pockets as in the known solutions discharged through the outlet openings. However, the construction according to the invention has the Advantage that the piston with the air inclusion collectors represents a pre-assembled unit and as a whole in the housing the hydraulic cylinder can be used. The previously required separate installation of air entrapment collectors in the housing eliminated.
Der Lufteinschlußkollektor definiert bei den bevorzugten Ausführungsformen der Erfindung einen in Umfangsrichtung des Mantelabschnitts verlaufenden Ringkanal.Of the Air entrapment collector defined in the preferred embodiments the invention extending in the circumferential direction of the jacket portion Annular channel.
Um den Lufteinschlußkollektor gegen Verdrehung und axiale Verschiebung relativ zu einer Welle, auf der der Kolben gelagert ist, zu sichern, kann der Lufteinschlußkollektor wenigstens eine Fixierlasche aufweisen, die mit einer Ausnehmung der Welle zusammenwirkt.Around the air entrapment collector against torsion and axial Displacement relative to a shaft on which the piston is mounted is to secure, the air entrapment collector can at least have a fixing tab, with a recess of the shaft interacts.
Für den Fall, daß der Hydraulikzylinder zwei (z. B. an entgegengesetzten Enden angeordnete) Auslaßöffnungen aufweist, ist es zweckmäßig, daß der Kolben zwei Lufteinschlußkollektoren aufweist, die vorzugsweise beide einen in Umfangsrichtung des Mantelabschnitts verlaufenden Ringkanal definieren.For the case that the hydraulic cylinder two (for example, at opposite End disposed) has outlet openings is it is expedient that the piston two air inclusion collectors preferably, both in the circumferential direction of the skirt portion define extending annular channel.
Gemäß einer besonders vorteilhaften Ausführungsform der Erfindung sind die Lufteinschlußkollektoren Teile eines einstückig ausgebildeten Profils, das auf einer Welle gelagert ist. In diesem Fall kann der Kolben insgesamt im wesentlichen einstückig ausgeführt werden, da keine zusätzlichen Verbindungs- oder Trägerteile notwendig sind.According to one particularly advantageous embodiment of the invention the air entrapment panels parts of one piece trained profile, which is mounted on a shaft. In this In the case of the piston as a whole may be substantially in one piece be executed because no additional connection or carrier parts are necessary.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung und aus den beigefügten Zeichnungen, auf die Bezug genommen wird. In den Zeichnungen zeigen:Further Features and advantages of the invention will become apparent from the following Description and from the accompanying drawings, to which Reference is made. In the drawings show:
In
An
den beiden stirnseitigen Enden des Gehäuses
Der
Kolben
Im
Betrieb des Hydraulikzylinders werden durch die Bewegung des Kolbens
Die
Der
Kolben
Die
beiden U-förmigen Querschnitte sind durch einen Mittelabschnitt
Wie
in
Die
den Teilräumen
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 3115273 A1 [0003] DE 3115273 A1 [0003]
- - DE 4419312 A1 [0003] - DE 4419312 A1 [0003]
- - DE 10314242 A1 [0003] - DE 10314242 A1 [0003]
- - JP 55135211 A [0003] JP 55135211 A [0003]
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007013529A DE102007013529A1 (en) | 2007-03-21 | 2007-03-21 | Hydraulic cylinder, particularly for hydraulic power steering in motor vehicle, has cylindrical shaped housing, which has casing section and discharge opening formed in casing section |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007013529A DE102007013529A1 (en) | 2007-03-21 | 2007-03-21 | Hydraulic cylinder, particularly for hydraulic power steering in motor vehicle, has cylindrical shaped housing, which has casing section and discharge opening formed in casing section |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007013529A1 true DE102007013529A1 (en) | 2008-09-25 |
Family
ID=39713019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007013529A Withdrawn DE102007013529A1 (en) | 2007-03-21 | 2007-03-21 | Hydraulic cylinder, particularly for hydraulic power steering in motor vehicle, has cylindrical shaped housing, which has casing section and discharge opening formed in casing section |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102007013529A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUB20155797A1 (en) * | 2015-11-20 | 2017-05-20 | Ognibene Power Spa | PISTON CYLINDER GROUP |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55135211A (en) | 1979-04-10 | 1980-10-21 | Aisin Seiki Co Ltd | Air-bleeder for hydraulic cylinder |
DE3115273A1 (en) | 1980-04-19 | 1982-04-08 | Lucas Industries Ltd., Birmingham, West Midlands | Hydraulic pressure cylinder |
DE4419312A1 (en) | 1994-06-01 | 1995-12-07 | Nokia Deutschland Gmbh | speaker |
DE10314242A1 (en) | 2003-03-29 | 2004-11-18 | Zf Lenksysteme Gmbh | servo cylinder |
EP1602543A1 (en) * | 2004-06-04 | 2005-12-07 | ZF Friedrichshafen AG | Master cylinder |
-
2007
- 2007-03-21 DE DE102007013529A patent/DE102007013529A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55135211A (en) | 1979-04-10 | 1980-10-21 | Aisin Seiki Co Ltd | Air-bleeder for hydraulic cylinder |
DE3115273A1 (en) | 1980-04-19 | 1982-04-08 | Lucas Industries Ltd., Birmingham, West Midlands | Hydraulic pressure cylinder |
DE4419312A1 (en) | 1994-06-01 | 1995-12-07 | Nokia Deutschland Gmbh | speaker |
DE10314242A1 (en) | 2003-03-29 | 2004-11-18 | Zf Lenksysteme Gmbh | servo cylinder |
EP1602543A1 (en) * | 2004-06-04 | 2005-12-07 | ZF Friedrichshafen AG | Master cylinder |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUB20155797A1 (en) * | 2015-11-20 | 2017-05-20 | Ognibene Power Spa | PISTON CYLINDER GROUP |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20140322 |