DE59510348D1 - Fluid-operated cylinder-piston arrangement with a magnetic field sensor - Google Patents

Fluid-operated cylinder-piston arrangement with a magnetic field sensor

Info

Publication number
DE59510348D1
DE59510348D1 DE59510348T DE59510348T DE59510348D1 DE 59510348 D1 DE59510348 D1 DE 59510348D1 DE 59510348 T DE59510348 T DE 59510348T DE 59510348 T DE59510348 T DE 59510348T DE 59510348 D1 DE59510348 D1 DE 59510348D1
Authority
DE
Germany
Prior art keywords
piston
magnetic field
field sensor
fluid
cylinder
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.)
Expired - Fee Related
Application number
DE59510348T
Other languages
German (de)
Inventor
Dipl Beetz
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.)
BEETZ HYDRAULIK GmbH
Original Assignee
BEETZ 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 BEETZ HYDRAULIK GmbH filed Critical BEETZ HYDRAULIK GmbH
Application granted granted Critical
Publication of DE59510348D1 publication Critical patent/DE59510348D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches

Abstract

The piston-cylinder device has an annular permanent magnet (3) attached to the piston (11), cooperating with a magnetic field sensor (2) within the cylinder (10), for detecting the piston position. The permanent magnet is magnetised in the axial direction of the piston-cylinder device and provided by ferromagnetic discs (32,33) for guiding the magnetic flux. The piston has an open groove (31) receiving the permanent magnet, which has an outer dia. only slightly less than the inner dia. of the cylinder, which has a recess receiving a sleeve (21) of a non-magnetic material, incorporating the magnetic field sensor.
DE59510348T 1995-01-04 1995-12-23 Fluid-operated cylinder-piston arrangement with a magnetic field sensor Expired - Fee Related DE59510348D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19500137A DE19500137A1 (en) 1995-01-04 1995-01-04 Fluid-operated cylinder-piston arrangement with a magnetic field sensor

Publications (1)

Publication Number Publication Date
DE59510348D1 true DE59510348D1 (en) 2002-10-02

Family

ID=7750997

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19500137A Withdrawn DE19500137A1 (en) 1995-01-04 1995-01-04 Fluid-operated cylinder-piston arrangement with a magnetic field sensor
DE59510348T Expired - Fee Related DE59510348D1 (en) 1995-01-04 1995-12-23 Fluid-operated cylinder-piston arrangement with a magnetic field sensor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19500137A Withdrawn DE19500137A1 (en) 1995-01-04 1995-01-04 Fluid-operated cylinder-piston arrangement with a magnetic field sensor

Country Status (3)

Country Link
EP (1) EP0721067B1 (en)
AT (1) ATE223002T1 (en)
DE (2) DE19500137A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29607993U1 (en) * 1996-05-03 1996-08-01 Festo Kg Piston for a working cylinder
DE19637296A1 (en) * 1996-09-13 1998-03-19 Wabco Gmbh Piston / cylinder arrangement
DE19712829B4 (en) * 1997-03-26 2005-02-17 Sick Ag Device for detecting the position of a moving object
DE19752671B4 (en) * 1997-11-28 2006-11-23 Ludwig Ehrhardt Gmbh Block cylinder for holding and guiding tools on a machine tool or on a work table
DE19756639A1 (en) 1997-12-19 1999-06-24 Zahnradfabrik Friedrichshafen Gear changing system for stepped reduction gearbox of vehicle
DE19756637A1 (en) * 1997-12-19 1999-06-24 Zahnradfabrik Friedrichshafen Gear selection control for transmission
DE10053995A1 (en) * 2000-10-31 2002-05-08 Continental Teves Ag & Co Ohg Signal generator with Hall sensor integrated in a master cylinder
DE10304551A1 (en) * 2003-02-04 2004-08-12 Mann + Hummel Gmbh Control element with position detection
DE10310428A1 (en) 2003-03-11 2004-09-30 Hydac Technology Gmbh piston accumulators
DE102005030722A1 (en) * 2005-07-01 2007-01-04 Bosch Rexroth Teknik Ab Actuating cylinder used in handling and transport systems comprises a measuring unit with a magnetic field sensor arranged relative to the magnetic field at a specified angle to the main measuring direction
CN102943784B (en) * 2012-11-19 2015-06-10 湖南特力液压有限公司 Cylinder barrel, hydraulic cylinder and pumping equipment comprising hydraulic cylinder
DE202013010056U1 (en) * 2013-11-07 2015-02-10 Bümach Engineering International B.V. working cylinder
DE102016210002A1 (en) * 2016-06-07 2017-12-07 Zf Friedrichshafen Ag Gearbox with a switching unit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8209420U1 (en) * 1982-04-02 1983-09-15 Robert Bosch Gmbh, 7000 Stuttgart PISTON FOR CONTACTLESS PISTON POSITION SENSING
DE3510601A1 (en) * 1985-03-23 1986-09-25 Wabco Westinghouse Steuerungstechnik GmbH & Co, 3000 Hannover Piston unit for a working cylinder, with a device for detecting the piston position
CH674058A5 (en) * 1986-10-22 1990-04-30 Festo Kg
JPS63122902A (en) * 1986-11-13 1988-05-26 Ckd Controls Ltd Apparatus for confirming position of moving body
DE9010114U1 (en) * 1990-07-03 1990-09-06 Festo Kg, 7300 Esslingen, De
DE4122481C2 (en) * 1991-07-06 1995-08-31 Kuhnke Gmbh Kg H Piston-cylinder arrangement
DE9305640U1 (en) * 1993-04-15 1994-08-25 Hydraulik Techniek Pressure operated cylinder

Also Published As

Publication number Publication date
ATE223002T1 (en) 2002-09-15
DE19500137A1 (en) 1996-07-11
EP0721067A3 (en) 1998-02-11
EP0721067A2 (en) 1996-07-10
EP0721067B1 (en) 2002-08-28

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee