EP0721067A2 - Vérin d'actionnement à fluide à capteur de champs magnétique - Google Patents

Vérin d'actionnement à fluide à capteur de champs magnétique Download PDF

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Publication number
EP0721067A2
EP0721067A2 EP95120518A EP95120518A EP0721067A2 EP 0721067 A2 EP0721067 A2 EP 0721067A2 EP 95120518 A EP95120518 A EP 95120518A EP 95120518 A EP95120518 A EP 95120518A EP 0721067 A2 EP0721067 A2 EP 0721067A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
permanent magnet
piston
piston arrangement
arrangement according
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
Application number
EP95120518A
Other languages
German (de)
English (en)
Other versions
EP0721067B1 (fr
EP0721067A3 (fr
Inventor
Albert Dipl -Ing. 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
Publication of EP0721067A2 publication Critical patent/EP0721067A2/fr
Publication of EP0721067A3 publication Critical patent/EP0721067A3/fr
Application granted granted Critical
Publication of EP0721067B1 publication Critical patent/EP0721067B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches

Definitions

  • the axial dimensions of the ring disk made of ferromagnetic material are at most half as large as the axial dimensions of the permanent magnet. This largely avoids scattering and concentrates the magnetic flux.
  • the bushing consists in particular of austenitic steel and is welded into the recess and receives the sensor in a blind hole. It is clear that in special cases, brazing instead of welding may be sufficient.
  • the inside of the cylinder is separated from the sensor by the welded socket and the blind hole in the socket. The sensor can be easily replaced.
  • the recess in the cylinder can extend into the interior of the cylinder. In this case it is advantageous if the inner end of the bushing is machined together with the inner surface of the cylinder. This procedure ensures that, despite the bushing used, the inner surface of the cylinder is completely smooth is, so that no additional stresses arise for the seals.
  • a recess 20 is provided in the wall of the cylinder 10, in which the bushing 21 is inserted or welded.
  • This bushing 21 receives the magnetic field sensor 2 in the blind bore 22, the connections of which are designated by 23.
  • the magnetic field sensor can be a reed switch, for example, which is housed in a protective tube. However, it is better to provide a magnetic field sensor which, in particular, has no moving parts and, for example, inductively determines the magnetic field and emits the corresponding signal.

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)
  • Fluid-Pressure Circuits (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
EP95120518A 1995-01-04 1995-12-23 Vérin d'actionnement à fluide à capteur de champs magnétique Expired - Lifetime EP0721067B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19500137A DE19500137A1 (de) 1995-01-04 1995-01-04 Druckmittelbetätigte Zylinder-Kolben-Anordnung mit einem Magnetfeldsensor
DE19500137 1995-01-04

Publications (3)

Publication Number Publication Date
EP0721067A2 true EP0721067A2 (fr) 1996-07-10
EP0721067A3 EP0721067A3 (fr) 1998-02-11
EP0721067B1 EP0721067B1 (fr) 2002-08-28

Family

ID=7750997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95120518A Expired - Lifetime EP0721067B1 (fr) 1995-01-04 1995-12-23 Vérin d'actionnement à fluide à capteur de champs magnétique

Country Status (3)

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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1445494A2 (fr) * 2003-02-04 2004-08-11 Mann+Hummel Gmbh Actionneur avec capteur de position
WO2004081388A1 (fr) * 2003-03-11 2004-09-23 Hydac Technology Gmbh Accumulateur a piston
DE102005030722A1 (de) * 2005-07-01 2007-01-04 Bosch Rexroth Teknik Ab Druckmittelzylinder
CN102943784A (zh) * 2012-11-19 2013-02-27 湖南特力液压有限公司 缸筒、液压缸及包含该液压缸的泵送设备
EP2878831A1 (fr) * 2013-11-07 2015-06-03 Bümach Engineering International B.V. Cylindre de travail
WO2017211519A1 (fr) * 2016-06-07 2017-12-14 Zf Friedrichshafen Ag Boîte de vitesses à dipositif de changement de vitesses

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29607993U1 (de) * 1996-05-03 1996-08-01 Festo Kg Kolben für einen Arbeitszylinder
DE19637296A1 (de) * 1996-09-13 1998-03-19 Wabco Gmbh Kolben/Zylinder-Anordnung
DE19712829B4 (de) * 1997-03-26 2005-02-17 Sick Ag Vorrichtung zur Erkennung der Position eines beweglichen Gegenstandes
DE19752671B4 (de) * 1997-11-28 2006-11-23 Ludwig Ehrhardt Gmbh Blockzylinder zur Aufnahme und Führung von Werkzeugen auf einer Werkzeugmaschine oder auf einem Arbeitstisch
DE19756637A1 (de) * 1997-12-19 1999-06-24 Zahnradfabrik Friedrichshafen Schalteinrichtung
DE19756639A1 (de) 1997-12-19 1999-06-24 Zahnradfabrik Friedrichshafen Schalteinrichtung
DE10053995A1 (de) * 2000-10-31 2002-05-08 Continental Teves Ag & Co Ohg In einen Hauptzylinder integrierter Signalgeber mit Hall-Sensor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093859A2 (fr) * 1982-04-02 1983-11-16 Robert Bosch Gmbh Piston pour contrôler sans contact la position duditpiston
DE3510601A1 (de) * 1985-03-23 1986-09-25 Wabco Westinghouse Steuerungstechnik GmbH & Co, 3000 Hannover Kolbeneinheit fuer einen arbeitszylinder mit einer einrichtung zum erfassen der kolbenposition
DE3738151A1 (de) * 1986-11-13 1988-05-26 Ckd Corp Kolbenpositionsdetektor fuer druckmittelzylinder
US4896584A (en) * 1986-10-22 1990-01-30 Kurt Stoll Piston-cylinder assembly
DE4116651A1 (de) * 1990-07-03 1992-01-09 Festo Kg Arbeitszylinder
DE4122481A1 (de) * 1991-07-06 1993-01-07 Kuhnke Gmbh Kg H Kolben-zylinder-anordnung
EP0620372A1 (fr) * 1993-04-15 1994-10-19 Hydraulik Techniek Vérin à fluide sous pression

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0093859A2 (fr) * 1982-04-02 1983-11-16 Robert Bosch Gmbh Piston pour contrôler sans contact la position duditpiston
DE3510601A1 (de) * 1985-03-23 1986-09-25 Wabco Westinghouse Steuerungstechnik GmbH & Co, 3000 Hannover Kolbeneinheit fuer einen arbeitszylinder mit einer einrichtung zum erfassen der kolbenposition
US4896584A (en) * 1986-10-22 1990-01-30 Kurt Stoll Piston-cylinder assembly
DE3738151A1 (de) * 1986-11-13 1988-05-26 Ckd Corp Kolbenpositionsdetektor fuer druckmittelzylinder
DE4116651A1 (de) * 1990-07-03 1992-01-09 Festo Kg Arbeitszylinder
DE4122481A1 (de) * 1991-07-06 1993-01-07 Kuhnke Gmbh Kg H Kolben-zylinder-anordnung
EP0620372A1 (fr) * 1993-04-15 1994-10-19 Hydraulik Techniek Vérin à fluide sous pression

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1445494A2 (fr) * 2003-02-04 2004-08-11 Mann+Hummel Gmbh Actionneur avec capteur de position
EP1445494A3 (fr) * 2003-02-04 2004-09-29 Mann+Hummel Gmbh Actionneur avec capteur de position
WO2004081388A1 (fr) * 2003-03-11 2004-09-23 Hydac Technology Gmbh Accumulateur a piston
US8365651B2 (en) 2003-03-11 2013-02-05 Hydac Technology Gmbh Piston-type accumulator
DE102005030722A1 (de) * 2005-07-01 2007-01-04 Bosch Rexroth Teknik Ab Druckmittelzylinder
CN102943784A (zh) * 2012-11-19 2013-02-27 湖南特力液压有限公司 缸筒、液压缸及包含该液压缸的泵送设备
CN102943784B (zh) * 2012-11-19 2015-06-10 湖南特力液压有限公司 缸筒、液压缸及包含该液压缸的泵送设备
EP2878831A1 (fr) * 2013-11-07 2015-06-03 Bümach Engineering International B.V. Cylindre de travail
WO2017211519A1 (fr) * 2016-06-07 2017-12-14 Zf Friedrichshafen Ag Boîte de vitesses à dipositif de changement de vitesses
CN109312856A (zh) * 2016-06-07 2019-02-05 Zf 腓德烈斯哈芬股份公司 具有切换单元的变速器

Also Published As

Publication number Publication date
ATE223002T1 (de) 2002-09-15
EP0721067B1 (fr) 2002-08-28
DE59510348D1 (de) 2002-10-02
DE19500137A1 (de) 1996-07-11
EP0721067A3 (fr) 1998-02-11

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