EP1217221A3 - Fluid power cylinder - Google Patents

Fluid power cylinder Download PDF

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Publication number
EP1217221A3
EP1217221A3 EP01890344A EP01890344A EP1217221A3 EP 1217221 A3 EP1217221 A3 EP 1217221A3 EP 01890344 A EP01890344 A EP 01890344A EP 01890344 A EP01890344 A EP 01890344A EP 1217221 A3 EP1217221 A3 EP 1217221A3
Authority
EP
European Patent Office
Prior art keywords
piston rod
piston
power cylinder
fluid power
indicator 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.)
Withdrawn
Application number
EP01890344A
Other languages
German (de)
French (fr)
Other versions
EP1217221A2 (en
Inventor
Gerhard Dipl.-Ing. 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 EP1217221A2 publication Critical patent/EP1217221A2/en
Publication of EP1217221A3 publication Critical patent/EP1217221A3/en
Withdrawn legal-status Critical Current

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
    • F15B15/1457—Piston rods
    • 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
    • F15B15/2861—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT using magnetic means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

Ein Druckmittelzylinder (1) weist eine in axialer Richtung abgedichtet aus dem Zylinder (2) geführte, mit dem Kolben (3) mitbewegte Kolbenstange (4) auf, die ein längserstrecktes, unterschiedlich magnetisierte Zonen aufweisendes Indikatorelement (6) trägt, das durch eine im Bereich der Herausführung (7) der Kolbenstange (4) angeordnete Sensoreinrichtung (10) zur Ermittlung der Kolbenposition abtastbar ist. Zur Vereinfachung der Herstellung und zur Erleichterung der Abdichtbarkeit der Kolbenstange bei möglichst unbeeinflußter Festigkeit derselben ist das Indikatorelement (6) in einer in der Kolbenstange (4) im wesentlichen zentral angeordneten Axialbohrung (15) untergebracht.

Figure 00000001
A pressure medium cylinder (1) has a piston rod (4), which is sealed in the axial direction from the cylinder (2) and moves with the piston (3), which carries an elongated, differently magnetized zones indicator element (6), which by a in Area of the lead-out (7) of the piston rod (4) arranged sensor device (10) can be scanned to determine the piston position. The indicator element (6) is accommodated in an axial bore (15) which is arranged essentially centrally in the piston rod (4) in order to simplify the manufacture and to facilitate the sealability of the piston rod with the strength thereof being unaffected as much as possible.
Figure 00000001
EP01890344A 2000-12-20 2001-12-19 Fluid power cylinder Withdrawn EP1217221A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT21162000 2000-12-20
AT21162000 2000-12-20

Publications (2)

Publication Number Publication Date
EP1217221A2 EP1217221A2 (en) 2002-06-26
EP1217221A3 true EP1217221A3 (en) 2004-03-17

Family

ID=3689890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01890344A Withdrawn EP1217221A3 (en) 2000-12-20 2001-12-19 Fluid power cylinder

Country Status (1)

Country Link
EP (1) EP1217221A3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002098692A1 (en) * 2001-06-01 2002-12-12 Bayerische Motoren Werke Aktiengesellschaft System for opening and closing a folding top or displaceable vehicle roof on a convertible vehicle
CN101427106B (en) * 2006-03-28 2012-02-22 诺格伦有限责任公司 Displacement sensor for a rod
DE102016116780A1 (en) * 2016-09-07 2018-03-08 Elgo Electronic Gmbh & Co. Kg Piston-cylinder device and use of such

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3324584A1 (en) * 1982-07-07 1984-01-12 Linde Ag, 6200 Wiesbaden Device for detecting a relative displacement position
US4717874A (en) * 1984-02-10 1988-01-05 Kabushiki Kaisha Sg Reluctance type linear position detection device
JPS635201A (en) * 1986-06-25 1988-01-11 Denki Kagaku Kogyo Kk Apparatus for detecting linear displacement
US4876945A (en) * 1987-10-13 1989-10-31 Festo Kg Piston and cylinder unit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE501291C2 (en) 1992-09-23 1995-01-09 Mecman Ab Rexroth Device for positioning piston cylinder assemblies
DE9412435U1 (en) 1994-08-02 1994-09-29 Festo Kg, 73734 Esslingen Working cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3324584A1 (en) * 1982-07-07 1984-01-12 Linde Ag, 6200 Wiesbaden Device for detecting a relative displacement position
US4717874A (en) * 1984-02-10 1988-01-05 Kabushiki Kaisha Sg Reluctance type linear position detection device
JPS635201A (en) * 1986-06-25 1988-01-11 Denki Kagaku Kogyo Kk Apparatus for detecting linear displacement
US4876945A (en) * 1987-10-13 1989-10-31 Festo Kg Piston and cylinder unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 203 (P - 715) 11 June 1988 (1988-06-11) *

Also Published As

Publication number Publication date
EP1217221A2 (en) 2002-06-26

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