EP2164081A2 - Aimant commutable - Google Patents

Aimant commutable Download PDF

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Publication number
EP2164081A2
EP2164081A2 EP09169917A EP09169917A EP2164081A2 EP 2164081 A2 EP2164081 A2 EP 2164081A2 EP 09169917 A EP09169917 A EP 09169917A EP 09169917 A EP09169917 A EP 09169917A EP 2164081 A2 EP2164081 A2 EP 2164081A2
Authority
EP
European Patent Office
Prior art keywords
switching
switching element
piston
contacts
magnetic piston
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Withdrawn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
EP09169917A
Other languages
German (de)
English (en)
Other versions
EP2164081A3 (fr
Inventor
Hans-Joerg Gasser
Ewald Lampl
Wolfgang Blaffert
Andreas Giefer
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.)
MSG Mechatronic Systems GmbH
Original Assignee
MSG Mechatronic Systems 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 MSG Mechatronic Systems GmbH filed Critical MSG Mechatronic Systems GmbH
Publication of EP2164081A2 publication Critical patent/EP2164081A2/fr
Publication of EP2164081A3 publication Critical patent/EP2164081A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1844—Monitoring or fail-safe circuits
    • H01F2007/185—Monitoring or fail-safe circuits with armature position measurement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H01H2071/046—Means for indicating condition of the switching device exclusively by position of operating part, e.g. with additional labels or marks but no other movable indicators

Definitions

  • the invention relates to a switching magnet according to the preamble of claim 1.
  • Switching magnets are known, which are provided with an interrogator for detecting the position of a magnetic piston (armature) (for example, extended according to the criteria - retracted) of the switching magnet.
  • interrogators include switch contacts (e.g., reed contacts or microswitches) external of the solenoid, actuated by the magnetic piston or an axis moved by the magnetic piston.
  • the invention achieves this object by providing a switching magnet with the characterizing features of claim 1.
  • Advantageous embodiments of the switching magnet according to the invention are set forth in the dependent claims.
  • the switching magnet according to the invention requires a much smaller space than conventional solenoids with anchor position query due to the integration of the Endlagenabfrage invention in the solenoids. Furthermore, in the case of the switching magnet according to the invention, no additional contacts, including cabling, have to be mounted outside the switching magnet. Rather, the anchor position query by a controller etc. directly by connecting the controller with connections to the solenoid. Another significant advantage of the switching magnet according to the invention is that the armature position sensing device is protected in the solenoid arranged and therefore offers excellent reliability and longevity.
  • the switching magnet according to the invention has at least one piston position detector integrated in the switching magnet.
  • the piston position detector detects at least two different positions of the magnetic piston, so that with a single piston position detector and thus with minimal component expenditure, for example, the starting and the end position of the magnetic piston can be determined.
  • the piston position detector In order to achieve optimum protection of the piston position detector against environmental influences and external mechanical forces, it is provided to install the piston position detector in the bobbin and / or to arrange the piston position detector at least partially between the bobbin and the magnetic piston.
  • the piston position detector comprises at least two contacts and a switching element, wherein the switching element is directly or indirectly actuated by the magnetic piston and opens and / or closes when actuated contacts.
  • the switching element is arranged on the magnetic piston or possibly on the axis or may be formed as a part of the magnetic piston or the axis.
  • the opening and closing of contacts is effected in one embodiment of the invention by the switching element triggered mechanical deflection of a contact towards another contact or away from another contact.
  • the switching element is designed as an electrically conductive element which, when actuated, is brought into or out of electrically conductive engagement with at least two electrical contacts. It is advantageous in some applications, when the electrically conductive switching element is arranged electrically isolated on the magnetic piston or optionally on the axis.
  • the piston position detector can detect clearly defined positions of the magnetic piston, preferably at least one contact and / or the switching element has switching sections defined by shaping. Only at these switching sections in or out of engagement with another contact or the switching element is possible.
  • the switching sections are formed as projections, paragraphs or depressions.
  • the contacts are perfectly protected against environmental influences, if they are at least partially included in the bobbin.
  • the same purpose also serves to guide the contacts in or on at least one flange of the bobbin so that they protrude radially beyond this flange.
  • Electromagnetic solenoids also called solenoids or electromagnetic actuators
  • solenoids are used in many areas to perform setting or switching functions. It is often necessary to be able to check in which position the piston (also referred to as anchor) of the solenoid is currently. In most cases, the possible end positions of the Kobens are queried.
  • the solenoid 10 has a housing 1, which serves as a magnetic iron yoke element.
  • a housing 1 which serves as a magnetic iron yoke element.
  • winding 3 of an excitation coil is housed. End surfaces of the housing in each case abut against an end flange 4b, 4c of the bobbin 4.
  • the bobbin 4 has a central passage opening 4a with a central axis.
  • a pole core 2 is arranged in the through hole 4 a, but projects in part beyond the through hole 4 a and is inserted with its protruding end into a first through hole 1 a of the housing 1.
  • annular plain bearing bush 6a which consists of a lubricious material or is provided on its inner peripheral surface with a sliding layer, for example a PTFE layer.
  • a further passage opening 1b is formed coaxially with the Through hole 4a of the bobbin 4 is aligned.
  • a second annular plain bearing bush 6b is seated in the through hole 1b of the housing 1 and extends into the through hole 4a of the bobbin 4.
  • a magnetic piston 5 is accommodated from a soft magnetic material, which extends inwardly beyond the plain bearing bush 6b in the Through opening 4a of the bobbin 4 extends.
  • an axis 7 (also referred to as a push rod) is inserted from a non-magnetic material.
  • This axis 7 extends through an axial passage opening 2b of the pole core 2 or through the first plain bearing bush 6a out of the switching magnet 10.
  • a coil spring 9 is disposed in the through hole 2b of the pole core 2 about the axis 7 around.
  • One end of the coil spring 9 rests against the plain bearing bush 6a, the other end of the coil spring 9 abuts on the magnetic piston 5 and biases the magnetic piston 5 in a Hubgglingsposition HA (see. Fig. 3A ), which is defined by the abutment of a displaceably arranged on the axis 7 or the magnetic piston 5 stop element on an abutment.
  • the magnetic piston 5 is displaceable along the center axis of the bobbin 4 (see double arrow A), wherein between the magnetic piston 5 and the pole core 2, a working air gap 8 is formed whose axial length changes with the displacement of the magnetic piston 5.
  • the magnetic piston 5 When the exciting coil winding 3 is energized, the magnetic piston 5 is moved from its stroke initial position HA in the direction of the pole core 2 to a stroke end position HE, which is defined in the present example as a position in which the magnetic piston 5 with its conical Part of the pole core 2 is present. Damping disks 11 dampen the stop of the magnetic piston both at its initial position HA and at its end position HE.
  • At least one piston position detector 20 is installed in the switching magnet 10 according to the invention. In the present embodiment, both the reaching of the stroke initial position HA and the reaching of the stroke end position HE are detected with the piston position detector 20.
  • a piston position detector 20 is integrated in the switching magnet 10, the at least one, but preferably at least two different positions of the magnetic piston 5 detected.
  • the piston position detector 20 is installed in the bobbin 4 or parts thereof may be arranged between the bobbin 4 and the magnetic piston 5.
  • the piston position detector comprises in this embodiment, a plurality of contacts 21, 22, 23 and a switching element 24 which is formed as an annular web of the magnetic piston 5 and thus moves together with the magnetic piston 5 (actuated) and when actuated contacts 21, 22 and 22, 23 opens and / or closes.
  • the switching element could also be arranged on the axis 7.
  • the switching element 24 is an electrically conductive element, which, when actuated, is brought into electrically conductive engagement with two electrical contacts when it is located at a position in which at least one contact 21, 22 has switching sections 25, 26, 27, which Projections are formed. When the switching element 24 is moved away from these switching sections 25, 26, 27, the electrically conductive connection between adjacent contacts is interrupted.
  • the contacts 21, 22, 23 are formed as contact springs which exert a mechanical bias on the switching element 24 when the switching element 24 is in the region of the switching sections 25, 26, 27.
  • switching sections may also include shoulders or depressions. To avoid short circuits, the switching element 24 can be arranged electrically isolated on the magnetic piston 5 or optionally on the axis 7.
  • Fig. 1 and Fig. 2 shows an embodiment of the switching magnet 10 according to the invention with so-called external contacts, which are contacts (also) are guided on the outer surface of the cylindrical base portion of the bobbin 4.
  • FIGS. 4A, 4B and 4C show a variant of a switching magnet 10 "according to the invention, which differs from the above-described first embodiment in that it has internal contacts 41, which are contacts, which are guided on the inner surface of the cylindrical base portion of the bobbin 4.
  • the other components of Solenoids 10 substantially correspond to those of the above-described solenoid 10, so that reference may be made to the above paragraphs with regard to the description of their form and function.
  • FIGS. 3A, 3B and 3C show a further embodiment of a switching magnet 10 'according to the invention with four contacts 31, 32, 33, 34th
EP09169917.3A 2008-09-10 2009-09-10 Aimant commutable Withdrawn EP2164081A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATGM484/2008U AT13504U1 (de) 2008-09-10 2008-09-10 Schaltmagnet

Publications (2)

Publication Number Publication Date
EP2164081A2 true EP2164081A2 (fr) 2010-03-17
EP2164081A3 EP2164081A3 (fr) 2013-06-26

Family

ID=41258756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09169917.3A Withdrawn EP2164081A3 (fr) 2008-09-10 2009-09-10 Aimant commutable

Country Status (2)

Country Link
EP (1) EP2164081A3 (fr)
AT (1) AT13504U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010039584A1 (de) * 2010-08-20 2012-02-23 Zf Friedrichshafen Ag Magnetaktuator mit Zustandssensor
EP2587496A1 (fr) 2011-10-27 2013-05-01 MSG Mechatronic Systems GmbH Aimant commutable bistable avec détecteur de position de piston
WO2016142105A1 (fr) * 2015-03-06 2016-09-15 Zf Friedrichshafen Ag Dispositif de commutation électromagnetique et procédé de fonctionnement du dispositif de commutation électromagnétique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29703587U1 (de) * 1997-02-28 1998-06-25 Fev Motorentech Gmbh & Co Kg Elektromagnetischer Aktuator mit Näherungssensor
FR2807871A1 (fr) * 2000-04-12 2001-10-19 Schneider Electric Ind Sa Electroaimant pour appareil interrupteur comprenant deux enroulements montes en serie ou en parallele
EP1818951A1 (fr) * 2006-02-06 2007-08-15 MSG Mechatronic Systems GmbH Electroaimant de levage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3832505A (en) * 1973-05-15 1974-08-27 F Wong Piston actuated switch with screw threads on piston and housing
US5172298A (en) * 1990-01-09 1992-12-15 Honda Giken Kogyo Kabushiki Kaisha Electromagnetic actuator
JPH10174408A (ja) * 1996-12-06 1998-06-26 Seiko Epson Corp 振動装置
JP2002048506A (ja) * 2000-08-04 2002-02-15 Matsushita Electric Ind Co Ltd 電磁アクチュエータ用位置センサ
DE10228856A1 (de) * 2002-06-27 2004-01-22 Siemens Ag Direktantrieb für eine Drosselklappenwelle in einem Drosselklappenstutzen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29703587U1 (de) * 1997-02-28 1998-06-25 Fev Motorentech Gmbh & Co Kg Elektromagnetischer Aktuator mit Näherungssensor
FR2807871A1 (fr) * 2000-04-12 2001-10-19 Schneider Electric Ind Sa Electroaimant pour appareil interrupteur comprenant deux enroulements montes en serie ou en parallele
EP1818951A1 (fr) * 2006-02-06 2007-08-15 MSG Mechatronic Systems GmbH Electroaimant de levage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010039584A1 (de) * 2010-08-20 2012-02-23 Zf Friedrichshafen Ag Magnetaktuator mit Zustandssensor
EP2587496A1 (fr) 2011-10-27 2013-05-01 MSG Mechatronic Systems GmbH Aimant commutable bistable avec détecteur de position de piston
WO2016142105A1 (fr) * 2015-03-06 2016-09-15 Zf Friedrichshafen Ag Dispositif de commutation électromagnetique et procédé de fonctionnement du dispositif de commutation électromagnétique

Also Published As

Publication number Publication date
EP2164081A3 (fr) 2013-06-26
AT13504U1 (de) 2014-02-15

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