EP0892175A1 - Druckmittelbetätigbarer Arbeitszylinder - Google Patents
Druckmittelbetätigbarer Arbeitszylinder Download PDFInfo
- Publication number
- EP0892175A1 EP0892175A1 EP98890180A EP98890180A EP0892175A1 EP 0892175 A1 EP0892175 A1 EP 0892175A1 EP 98890180 A EP98890180 A EP 98890180A EP 98890180 A EP98890180 A EP 98890180A EP 0892175 A1 EP0892175 A1 EP 0892175A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- valve
- pressure medium
- cylinder
- closure element
- 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.)
- Granted
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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
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
-
- 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
- F15B15/1433—End caps
-
- 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
Definitions
- the invention relates to a pressure-actuated working cylinder, especially for the actuation of vehicle tops, with a cylinder tube, which one on at least one side of a piston movable therein Has pressure medium connection.
- Hydraulically operated working cylinders of this type are usually used for the application greater forces with a relatively small available space can be used because the pressure source in this case is relatively far without any problems can be arranged away from the working cylinder and only for connection relatively thin hydraulic lines are required.
- the relationship mentioned is therefore hydraulically operated working cylinders particularly preferred because in vehicles or in the for the operation of Folded covers or similar spaces available relatively little There is space and relatively high forces for safe operation are to be applied.
- the object of the present invention is to provide a working cylinder type mentioned in such a way that the disadvantages described known, such arrangements can be avoided and that in particular simple, space-saving and cost-effective way also security aspects the actuation of various elements with such working cylinders can be taken into account.
- This task is carried out in a cylinder of the type mentioned according to the present invention in that at least one in the piston when a certain pressure of the pressure medium supplied is exceeded in the bias valve opening the opposite cylinder space is arranged, and that a locking member is provided which the biasing valve via a Part of the piston stroke blocked. So this is primarily against the increase of the cylinder internal pressure effective beyond a predetermined value Safety device created directly in the working cylinder itself no other installations or cabling required and reliable is used when a certain security pressure is exceeded.
- pressure medium can usually be very easily from there via the anyway provided Drain the pressure medium connection - only in the event that such a working cylinder for example, can only be actuated on one side and on the other side either internally or externally (e.g. via springs or the like) should be set back, possibly for a reflux of the deactivated pressure medium or the undisturbed discharge in the case of compressed air or the like.
- the locking member can be a have finger-like closure element which the inflow opening of Bias valve closes to block it.
- the sealing element can be of one pressed into the essentially tubular closure element Ball be formed, which is an easy to carry out and attach Training of this sealing element allows.
- the respective pressure medium connection is a particularly preferred one further embodiment of the invention by the tubular closure element and on it laterally provided openings with the respective cylinder space connected, which also simplifies the design and manufacture results.
- Fig. 1 shows a partial longitudinal section through an inventive Working cylinder with the piston in one of those in the illustration right end position raised intermediate position
- Fig. 2 shows the working cylinder 1 with the piston completely in the illustration right end position.
- the working cylinder 1 shown is not shown here Actuated with hydraulic pressure medium, which via a Pressure medium connection 2 can be supplied or discharged.
- a Pressure medium connection 2 can be supplied or discharged.
- On the in the illustration not visible left side can be a second corresponding Connection should be provided - apart from that, the print medium could also can only be fed and discharged on one side, whereby on the other side of the Working cylinder 1, for example by means of springs, weights, the operated Element itself, or the like for a necessary reset could be.
- a piston 4 is movable in a cylinder tube 3 along the axis 5 arranged, which carries on its circumference a sealing arrangement 6 and with a piston rod 7, which on the left in the illustration on not evident way sealed by the cover of the working cylinder 1 ins Free is led, connected.
- this blocking member 18 has a finger-like closure element 19 on which the inflow opening on the blocked part of the piston stroke 12 of the bias valve 9 closes to block it.
- the substantially tubular closure member 19 has on its Ball 23 facing away from a collar 24, by means of which it in its Fig. 1 shown extended left end position under the force of Spring 20 is held. Marked this end position shown in Fig. 1 also the piston position from which the sealing element 22 or the ball 23 lifts off from the further seat edge 21 at the inflow opening 12 in the piston 4 and thus with the piston movement continuing to the left in the illustration stops blocking the preload valve 9.
- Fig. 1st shown left end position of the closure element 19 acts Bund 24 together with a retraction on a screw-in sleeve 25 which in Bottom 26 is screwed.
- a screw connection 27 of the pressure medium connection 2 which does not refer to here further interesting way in connection with a pressure medium line 28 stands and from which pressure medium via connecting channels 29 the interior of the Screw-in sleeve 25 or the closure element 19 can flow.
- the floor 26 is sealed against the cylinder tube 3 by means of a seal 30, which at its corresponding end by means of a compression 31 with the Bottom 26 is connected.
- Blocking organ could, of course, also apply accordingly to the other side of the working cylinder 1 may be provided, so that in both directions of movement appropriate security against exceeding great forces are given, which may also be on both sides could be different or different on both sides may be in the long position at the beginning of the piston movement. In this way can meet various requirements when using such working cylinders Be taken into account.
- the specific type of training and The arrangement of the preload valve or the preload valves can be opposite the arrangement shown and discussed can be varied as well as this applies to the blocking organ or the blocking organs.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
Description
Claims (5)
- Druckmittelbetätigbarer Arbeitszylinder (1), insbesonders zur Betätigung von Fahrzeugverdecken, mit einem Zylinderrohr (3), welches auf zumindest einer Seite eines darin bewegbaren Kolbens (4) einen Druckmittelanschluß (2) aufweist, dadurch gekennzeichnet, daß im Kolben (4) zumindest ein bei Überschreitung eines bestimmten Druckes des zugeführten Druckmittels in den gegenüberliegenden Zylinderraum (8) öffnendes Vorspannventil (9) angeordnet ist, und daß ein Sperrorgan (18) vorgesehen ist, welches das Vorspannventil (9) über einen Teil des Kolbenhubes blockiert.
- Arbeitszylinder nach Anspruch 1, dadurch gekennzeichnet, daß das Sperrorgan (18) ein fingerartiges Verschlußelement (19) aufweist, welches die Zuströmöffnung (12) des Vorspannventils (9) zu dessen Blockierung verschließt.
- Arbeitszylinder nach Anspruch 2, dadurch gekennzeichnet, daß das Verschlußelement (19) vom Bereich einer inneren Stirnseite des Zylinderrohres (3) her federbelastet in axialer Richtung begrenzt beweglich im Zylinderrohr (3) angeordnet ist und an seiner dem Kolben (4) zugewandten Seite ein mit der Zuströmöffnung (12) des Vorspannventils (9) nach Art eines Ventilsitzes zusammenwirkendes Dichtelement (22) aufweist.
- Arbeitszylinder nach Anspruch 3, dadurch gekennzeichnet, daß das Dichtelement (22) von einer in das im wesentlichen rohrförmig ausgebildete Verschlußelement (19) eingepreßten Kugel (23) gebildet ist.
- Arbeitszylinder nach Anspruch 4, dadurch gekennzeichnet, daß der jeweilige Druckmittelanschluß (2) durch das rohrförmige Verschlußelement (19) und daran seitlich vorgesehene Öffnungen (32) mit dem jeweiligen Zylinderraum (16) verbunden ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT121197 | 1997-07-16 | ||
AT1211/97 | 1997-07-16 | ||
AT121197 | 1997-07-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0892175A1 true EP0892175A1 (de) | 1999-01-20 |
EP0892175B1 EP0892175B1 (de) | 2002-09-25 |
Family
ID=3509029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980890180 Expired - Lifetime EP0892175B1 (de) | 1997-07-16 | 1998-06-24 | Druckmittelbetätigbarer Arbeitszylinder |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0892175B1 (de) |
DE (1) | DE59805662D1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101813106A (zh) * | 2009-02-21 | 2010-08-25 | 古斯塔夫瓦勒尔两合公司 | 气动工作缸 |
WO2013023316A2 (de) | 2011-08-16 | 2013-02-21 | Mueller Peter A | Fluidanschluss |
WO2013044403A1 (de) | 2011-09-29 | 2013-04-04 | Mueller Peter A | Steckkupplung |
DE102015118839A1 (de) * | 2015-11-03 | 2017-05-04 | Tkr Spezialwerkzeuge Gmbh | Hydraulikeinheit für ein mobiles Hydraulikwerkzeug |
CN114396414A (zh) * | 2022-03-28 | 2022-04-26 | 格力乐液压系统(常州)有限公司 | 自动切换差动状态的液压缸 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1039844B (de) * | 1957-05-23 | 1958-09-25 | Pumpenfabrik Urach | Hydraulischer Arbeitszylinder mit Daempfungseinrichtung |
JPS5965609A (ja) * | 1982-10-07 | 1984-04-13 | Tokyu Car Corp | シリンダの緩衝装置 |
DE4424927A1 (de) * | 1994-07-14 | 1996-01-18 | Kaup Gmbh & Co Kg | Hydraulik-Antriebsaggregat mit Kolbenstange |
-
1998
- 1998-06-24 DE DE59805662T patent/DE59805662D1/de not_active Expired - Fee Related
- 1998-06-24 EP EP19980890180 patent/EP0892175B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1039844B (de) * | 1957-05-23 | 1958-09-25 | Pumpenfabrik Urach | Hydraulischer Arbeitszylinder mit Daempfungseinrichtung |
JPS5965609A (ja) * | 1982-10-07 | 1984-04-13 | Tokyu Car Corp | シリンダの緩衝装置 |
DE4424927A1 (de) * | 1994-07-14 | 1996-01-18 | Kaup Gmbh & Co Kg | Hydraulik-Antriebsaggregat mit Kolbenstange |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 008, no. 170 (M - 315) 7 August 1984 (1984-08-07) * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101813106A (zh) * | 2009-02-21 | 2010-08-25 | 古斯塔夫瓦勒尔两合公司 | 气动工作缸 |
CN101813106B (zh) * | 2009-02-21 | 2015-01-14 | 古斯塔夫瓦勒尔两合公司 | 气动工作缸 |
WO2013023316A2 (de) | 2011-08-16 | 2013-02-21 | Mueller Peter A | Fluidanschluss |
WO2013044403A1 (de) | 2011-09-29 | 2013-04-04 | Mueller Peter A | Steckkupplung |
DE102015118839A1 (de) * | 2015-11-03 | 2017-05-04 | Tkr Spezialwerkzeuge Gmbh | Hydraulikeinheit für ein mobiles Hydraulikwerkzeug |
DE102015118839B4 (de) * | 2015-11-03 | 2017-06-01 | Tkr Spezialwerkzeuge Gmbh | Hydraulikeinheit für ein mobiles Hydraulikwerkzeug |
CN114396414A (zh) * | 2022-03-28 | 2022-04-26 | 格力乐液压系统(常州)有限公司 | 自动切换差动状态的液压缸 |
CN114396414B (zh) * | 2022-03-28 | 2022-06-21 | 格力乐液压系统(常州)有限公司 | 自动切换差动状态的液压缸 |
Also Published As
Publication number | Publication date |
---|---|
DE59805662D1 (de) | 2002-10-31 |
EP0892175B1 (de) | 2002-09-25 |
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