EP1128074A2 - Actionneur entraíné par un fluide - Google Patents

Actionneur entraíné par un fluide Download PDF

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Publication number
EP1128074A2
EP1128074A2 EP00890380A EP00890380A EP1128074A2 EP 1128074 A2 EP1128074 A2 EP 1128074A2 EP 00890380 A EP00890380 A EP 00890380A EP 00890380 A EP00890380 A EP 00890380A EP 1128074 A2 EP1128074 A2 EP 1128074A2
Authority
EP
European Patent Office
Prior art keywords
piston rod
actuator
piston
cylinder tube
displacement sensor
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Withdrawn
Application number
EP00890380A
Other languages
German (de)
English (en)
Other versions
EP1128074A3 (fr
Inventor
Gerhard Huber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoerbiger Hydraulik GmbH
Original Assignee
Hoerbiger Hydraulik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hoerbiger Hydraulik GmbH filed Critical Hoerbiger Hydraulik GmbH
Publication of EP1128074A2 publication Critical patent/EP1128074A2/fr
Publication of EP1128074A3 publication Critical patent/EP1128074A3/fr
Withdrawn legal-status Critical Current

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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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2892—Means for indicating the position, e.g. end of stroke characterised by the attachment means

Definitions

  • the invention relates to a fluid-operated actuator, in particular a hydraulic working cylinder, with a hollow cylinder tube, two end pieces, one in the cylinder tube the effect of a working fluid displaceable piston and at least one with the piston connected, led out sealed by one of the end pieces piston rod, and at least one connection for introducing the working fluid into one between at least one of the end pieces and the piston formed working space of the actuator, opposite the first piston rod, a second piston rod is connected to the piston, which passed through the second end piece and sealed with the second piston rod a displacement sensor is coupled, which is provided at the end of the actuator that the first piston rod is opposite.
  • a fluid-operated actuator in particular a hydraulic working cylinder, with a hollow cylinder tube, two end pieces, one in the cylinder tube the effect of a working fluid displaceable piston and at least one with the piston connected, led out sealed by one of the end pieces piston rod, and at least one connection for introducing the working fluid into one between at least one of the end pieces and the piston formed working space of
  • EP 0 326 070 A2 there is a testing machine system with a hydraulic one Drive described, in which the working cylinder itself in a stationary frame is stationary and the displacement transducer is also in a certain spatial Distance from the cylinder is attached to this frame.
  • a direct connection is not between the working cylinder and the displacement transducer or its mounting location provided so that no system is described which is suitable for installation in motor vehicles between two mutually movable articulation points suitable and also accordingly can be made small and yet robust.
  • the latter is also the case for the device for measuring the volume change of liquids the case that is disclosed in EP 0 275 825 A1.
  • the displacement sensor too not directly connected to the working cylinder, but only like this on the same Carrier plate of the support structure attached. It is also parallel to the working cylinder arranged next to this.
  • actuators are used on many other areas, where it is also particularly important, the exact position to know the piston rod, for example in order to supply the working fluid according to the position to control or other movements to the position of the actuator or of adapt to this moving component.
  • the complicated processes of entering and leaving Extending convertible tops can be carried out safely and in an optimized manner, just like that Opening or closing trunk lids, engine compartment covers, doors or convertible top flaps.
  • the object of the present invention was therefore an actuator as stated at the beginning, in which the determination of the position of the piston rod is simple and safe and while maintaining a very compact, yet mechanically robust design of the entire arrangement can be accomplished, so that the actuator in particular Use in motor vehicles is suitable.
  • the actuator described at the outset is characterized in that that a rigid connector from the second end piece to one for coupling of the actuator to any other component designed floor element and that the displacement sensor is mounted on this rigid connection.
  • a rigid connector from the second end piece to one for coupling of the actuator to any other component designed floor element and that the displacement sensor is mounted on this rigid connection In order to is the direct coupling of the displacement sensor to the actuator while avoiding Intermediate pieces or lines to achieve an extremely stable, robust and compact Construction as well as avoiding measurement inaccuracies in any Position of the actuator possible.
  • the actuator can be just a little longer conventional cylinder can be installed without having to rely on the position determination arrangement special consideration must be given at the end.
  • a particularly mechanically stable embodiment can be achieved if the rigid connector by extending the cylinder tube over the second End piece is given up to the floor element.
  • the extension of the cylinder tube second piston rod tubular, substantially cylindrical, surrounds and with a longitudinal slot is provided, through which the second piston rod with the displacement sensor connected is.
  • a structurally simple coupling of the displacement sensor to the piston of the actuator can be achieved according to a further feature of the invention in that the second Piston rod is rigidly connected to the piston in a manner known per se, and that thereon a pin which protrudes laterally and preferably perpendicular to the second piston rod is provided is, which engages in a guide that is rotatably in one with the displacement sensor connected and pivotable in a plane parallel to the longitudinal axis of the actuator Lever is incorporated in the longitudinal direction, preferably as an elongated hole in the Lever, which also ensures a secure connection.
  • the displacement sensor is formed by a rotary sensor, which with the second piston rod is connected.
  • the displacement sensor is on a mounting bracket on the working cylinder, preferably on the cylindrical extension of the cylinder tube, attached, giving a simple and functional attachment variant is.
  • FIG. 1 shows a side view of an actuator according to the invention and FIG. 2 is a longitudinal section through the actuator of FIG. 1.
  • a cylinder tube 1 is provided with connections 2 for the supply and discharge of the working fluid, preferably a hydraulic oil, preferably to both work rooms 3, which Working spaces 3 in the area of section 1a of the cylinder tube 1 between the piston 4 and the two end pieces 5, 6 are formed.
  • the working fluid preferably a hydraulic oil
  • a first piston rod 7 is through the first end piece 5, which the cover of the Actuator forms, passes through sealed and carries the rod head at the outer end 8, which is designed for coupling to a further component of the overall system.
  • Piston rod 9 On the side of the piston 4 opposite the piston rod 7 there is a second one Piston rod 9 is provided and rigidly attached to it in the longitudinal direction. Preferably this second piston rod 9 is exactly aligned with the extension of the first piston rod 7 provided with this.
  • both piston rods 7, 9 could be made in one piece Component executed and the piston 4 placed on this component essentially in the middle his.
  • the section 1b of the cylinder tube 1 surrounds the second piston rod 9 in an extension of section 1a and is supported by a bottom element 10 at the end of the actuator completed, which is opposite the first end piece 5.
  • the floor element 10 is analog the rod head 8 is designed for coupling to a further component of the overall system.
  • section 1b of the cylinder tube 1 there is an elongated hole 11 in the longitudinal direction thereof cut out through which elongated hole 11 a pin 12 protrudes.
  • This pin 11 is connected to the second piston rod 9 or made in one piece with it and protrudes away from it laterally, preferably substantially perpendicular to its longitudinal axis.
  • the Pin 12 engages in an elongated hole 13 which is worked out in a lever 14 which again is rotatably connected to a rotary sensor 15 as the actual displacement sensor.
  • the Rotation sensor 15 is directly on section 1b of cylinder tube 1, i.e. directly on the invention Actuator mounted, for which purpose the section 1b, for example, a laterally projecting mounting bracket 16.
  • the rotation sensor 15 is advantageously not in one plane with the connections 2, but are the two levels, which are the connections 2 and the rotary sensor 15 or contain the mounting bracket 16, pivoted against each other. Since the lever 14 essentially is consequently parallel to the plane of the rotation sensor 15 or the mounting bracket 16 also the longitudinal slot 11 relative to the plane of the connections 2 by a certain one Offset.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
EP00890380A 2000-01-21 2000-12-20 Actionneur entraíné par un fluide Withdrawn EP1128074A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT90002000 2000-01-21
AT902000A AT408476B (de) 2000-01-21 2000-01-21 Fluidbetätigter aktuator

Publications (2)

Publication Number Publication Date
EP1128074A2 true EP1128074A2 (fr) 2001-08-29
EP1128074A3 EP1128074A3 (fr) 2003-09-03

Family

ID=3610493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00890380A Withdrawn EP1128074A3 (fr) 2000-01-21 2000-12-20 Actionneur entraíné par un fluide

Country Status (2)

Country Link
EP (1) EP1128074A3 (fr)
AT (1) AT408476B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6863334B2 (en) * 2001-06-01 2005-03-08 Bayerische Motoren Werke Aktiengesellschaft System for opening and closing a folding top or displaceable vehicle roof on a convertible vehicle
EP3702628A1 (fr) * 2019-02-26 2020-09-02 Amazonen-Werke H. Dreyer GmbH & Co. KG Dispositif de détection de la hauteur de levage d'une tige de piston dans un cylindre

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121504A (en) * 1977-01-21 1978-10-24 Inovec, Inc. Cylinder positioning systems
JPS5431200A (en) * 1977-08-10 1979-03-07 Fuji Heavy Ind Ltd High-lift apparatus for aircraft
DE3870876D1 (de) * 1988-08-18 1992-06-11 Festo Kg Linear-antriebseinrichtung.
DE3941748C2 (de) * 1989-12-18 1995-03-09 Siemens Ag Elektro-pneumatische oder -hydraulische Linear-Antriebsvorrichtung
DE4128959A1 (de) * 1991-08-30 1993-03-04 Schaeff Karl Gmbh & Co Schaufellader-kippzylinder
US6299108B1 (en) * 1997-12-12 2001-10-09 Jeffrey V. Lindstrom Method and apparatus for detecting skew and asymmetry of an airplane flap

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6863334B2 (en) * 2001-06-01 2005-03-08 Bayerische Motoren Werke Aktiengesellschaft System for opening and closing a folding top or displaceable vehicle roof on a convertible vehicle
EP3702628A1 (fr) * 2019-02-26 2020-09-02 Amazonen-Werke H. Dreyer GmbH & Co. KG Dispositif de détection de la hauteur de levage d'une tige de piston dans un cylindre

Also Published As

Publication number Publication date
ATA902000A (de) 2001-04-15
AT408476B (de) 2001-12-27
EP1128074A3 (fr) 2003-09-03

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