DE3716996A1 - Verformungselement - Google Patents

Verformungselement

Info

Publication number
DE3716996A1
DE3716996A1 DE19873716996 DE3716996A DE3716996A1 DE 3716996 A1 DE3716996 A1 DE 3716996A1 DE 19873716996 DE19873716996 DE 19873716996 DE 3716996 A DE3716996 A DE 3716996A DE 3716996 A1 DE3716996 A1 DE 3716996A1
Authority
DE
Germany
Prior art keywords
deformation element
strips
heating element
deformation
film heating
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Withdrawn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
DE19873716996
Other languages
English (en)
Inventor
Wolfgang Adamitzki
Friedhelm Sick
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.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Priority to DE19873716996 priority Critical patent/DE3716996A1/de
Publication of DE3716996A1 publication Critical patent/DE3716996A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00Electrothermal relays
    • H01H61/01Details
    • H01H61/013Heating arrangements for operating relays
    • GPHYSICS
    • G12INSTRUMENT DETAILS
    • G12BCONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B1/00Sensitive elements capable of producing movement or displacement for purposes not limited to measurement; Associated transmission mechanisms therefor
    • G12B1/02Compound strips or plates, e.g. bimetallic

Landscapes

  • Surface Heating Bodies (AREA)
  • Resistance Heating (AREA)

Description

Die Erfindung bezieht sich auf ein Verformungselement, welches aus zwei miteinander verbundenen Materialstrei­ fen mit unterschiedlichen Dehnungskoeffizienten gebildet ist und eine elektrische Heizung zum Erwärmen und damit Verformen des Verformungselementes aufweist. Solche Ver­ formungselemente sind in Bimetallschaltern vorgesehen und allgemein bekannt.
Bei den bekannten Bimetallschaltern wird die bei Erwär­ mung des Verformungselementes auftretende Bewegung für schalttechnische Zwecke genutzt, beispielsweise bei einem Thermostat. Die zusätzliche Heizung, welche aus einer um das Verformungselement geschlungenen Heizwick­ lung besteht, führt zu einem nicht auf Magnetisierung beruhenden elektro-mechanischen Schalter.
Nachteilig bei den bekannten Schaltern ist es, daß sie durch die Anordnung der Heizung relativ aufwendig werden und deshalb teuer in der Herstellung sind. Da es sich bei solchen Verformungselementen und den aus ihnen gebildeten Schaltern jedoch meist um Massenartikel handelt, ist es wünschenswert, wenn diese so einfach wie möglich ausgebildet sind, damit sie kostengünstig herge­ stellt werden können.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfor­ mungselement der eingangs genannten Art derart auszu­ bilden, daß es möglichst einfach aufgebaut und dadurch kostengünstig herstellbar ist.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die elektrische Heizung ein fest mit dem Verformungs­ element verbundenes Folienheizelement ist.
Solche Folienheizelemente werden für andere Zwecke in großen Stückzahlen verwendet und sind deshalb kosten­ günstig erhältlich. Sie bestehen aus einer Kunststoff­ folie, welche einseitig dünn metallisiert und als Schutz oder Isolierung wieder mit einer Kunststoffolie über­ zogen ist. Die Metallisierung kann durch Bedampfen, Be­ sputtern oder Auflaminieren einer Metallfolie erfolgen. Die Metallschicht des Folienheizelementes kann, muß aber nicht, strukturiert sein.
Das erfindungsgemäße Verformungselement ist sehr kosten­ günstig herstellbar und sieht aus wie ein übliches Bime­ tallelement. Es nimmt auch nicht mehr Platz ein als ein solches Bimetallelement, so daß es wesentlich kompakter ist als übliche Dehnungselemente mit einer elektrischen Heizung.
Ganz besonders günstig ist es, wenn das Folienheizele­ ment zwischen den beiden Materialstreifen vorgesehen ist, da es dort vor mechanischer Beschädigung geschützt ist.
Eine alternative Ausführungsform besteht darin, daß das Folienheizelement auf einem der Materialstreifen vor­ gesehen ist. Denkbar ist hierbei, daß das Folienheiz­ element entweder auf einer der Außenseiten des Dehnungs­ streifens oder aber auf einer vorspringenden Fläche eines Materialstreifens angeordnet wird, auf der weiter hinten der andere Materialstreifen angeordnet ist.
Das Folienheizelement ist sehr einfach mit den Material­ streifen verbunden, wenn es auf oder zwischen die Mate­ rialstreifen geklebt ist.
Das Verbinden der Materialstreifen und des Folienheiz­ elementes miteinander ist ganz besonders einfach, wenn die Materialstreifen aus einem Kunststoff mit unter­ schiedlichem Dehnungskoeffizienten bestehen.
Ebenfalls sind die Materialstreifen und das Folienheiz­ element sehr einfach miteinander verbunden, wenn gemäß einer anderen Ausgestaltung der Erfindung die Material­ streifen unter Einschluß des Folienheizelementes mit­ einander verschweißt sind.
Die Erfindung läßt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips sind drei davon in der Zeichnung dargestellt und werden nachfol­ gend beschrieben. Die Zeichnung zeigt in
Fig. 1 eine perspektivische Darstellung einer ersten Ausführungsform eines erfindungsge­ mäßen Dehnungselementes,
Fig. 2 eine perspektivische Darstellung einer zweiten Ausführungsform eines erfindungsge­ mäßen Dehnungselementes,
Fig. 3 eine perspektivische Darstellung einer dritten Ausführungsform eines erfindungsge­ mäßen Dehnungselementes.
Die drei Figuren zeigen jeweils Dehnungselemente, welche aus zwei aufeinanderliegenden Materialstreifen 1, 2 und einem Folienheizelement 3 aufgebaut sind. Das Folien­ heizelement 3 kann von üblicher Bauart und zum Anschluß zweier elektrischer Leiter 4, 5 ausgebildet sein. Bei der Ausführungsform gemäß Fig. 1 ist das Folienheiz­ element 3 zwischen die Materialstreifen 1, 2 geklebt. Gemäß Fig. 2 befindet es sich oben auf dem oberen Materialstreifen 1.
Bei der Ausführungsform gemäß Fig. 3 ist der untere Materialstreifen 2 breiter als der obere Materialstrei­ fen. Dadurch entsteht eine vorspringende Fläche 6, auf der das Folienheizelement 3 aufgebracht ist.

Claims (7)

1. Verformungselement, welches aus zwei miteinander verbundenen Materialstreifen mit unterschiedlichen Dehnungskoeffizienten gebildet ist und eine elektrische Heizung zum Erwärmen und damit Verformen des Verformungs­ elementes aufweist, dadurch gekennzeichnet, daß die elektrische Heizung ein fest mit dem Verformungselement verbundenes Folienheizelement (3) ist.
2. Verformungselement nach Anspruch 1, dadurch gekenn­ zeichnet, daß das Folienheizelement (3) zwischen den beiden Materialstreifen (1, 2) vorgesehen ist.
3. Verformungselement nach Anspruch 1, dadurch gekenn­ zeichnet, daß das Folienheizelement (3) auf einem der Materialstreifen (1) vorgesehen ist.
4. Verformungselement nach einem oder mehreren der voran­ gehenden Ansprüche, dadurch gekennzeichnet, daß das Folienheizelement (3) auf oder zwischen die Material­ streifen (1, 2) geklebt ist.
5. Verformungselement nach einem oder mehreren der voran­ gehenden Ansprüche, dadurch gekennzeichnet, daß die Materialstreifen (1, 2) aus einem Kunststoff mit unter­ schiedlichem Dehnungskoeffizienten bestehen.
6. Verformungselement nach einem oder mehreren der voran­ gehenden Ansprüche, dadurch gekennzeichnet, daß die Materialstreifen (1, 2) unter Einschluß des Folienheiz­ elementes (3) miteinander verschweißt sind.
7. Verformungselement nach einem der mehreren der voran­ gehenden Ansprüche, dadurch gekennzeichnet, daß ein Mate­ rialstreifen (2) breiter als der andere Materialstreifen (1) ist und das Folienheizelement (3) sich auf dem vor­ springenden Teil der Fläche (6) befindet, auf welcher der andere Materialstreifen (1) aufgebracht ist.
DE19873716996 1987-05-21 1987-05-21 Verformungselement Withdrawn DE3716996A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873716996 DE3716996A1 (de) 1987-05-21 1987-05-21 Verformungselement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873716996 DE3716996A1 (de) 1987-05-21 1987-05-21 Verformungselement

Publications (1)

Publication Number Publication Date
DE3716996A1 true DE3716996A1 (de) 1988-12-08

Family

ID=6328004

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873716996 Withdrawn DE3716996A1 (de) 1987-05-21 1987-05-21 Verformungselement

Country Status (1)

Country Link
DE (1) DE3716996A1 (de)

Cited By (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3841557A1 (de) * 1988-12-09 1990-06-13 Fraunhofer Ges Forschung Mikromechanischer manipulator
FR2647566A1 (fr) * 1989-05-23 1990-11-30 Al Sabagh Abdulrahman Dispositif d'aeration automodulaire destine a regulariser la temperature dans une enceinte
EP0478956A2 (de) * 1990-10-04 1992-04-08 Forschungszentrum Karlsruhe GmbH Mikromechanisches Element
DE4406377A1 (de) * 1994-02-26 1995-08-31 Abb Patent Gmbh Vorrichtung zur Beheizung eines Streifens aus Thermobimetall, Formgedächtnislegierung oder dergleichen
EP0999934A1 (de) * 1997-07-15 2000-05-17 Silver Brook Research Pty, Ltd Thermisch betätigter tintenstrahl
US6746105B2 (en) 1997-07-15 2004-06-08 Silverbrook Research Pty. Ltd. Thermally actuated ink jet printing mechanism having a series of thermal actuator units
US6776476B2 (en) 1997-07-15 2004-08-17 Silverbrook Research Pty Ltd. Ink jet printhead chip with active and passive nozzle chamber structures
US6783217B2 (en) 1997-07-15 2004-08-31 Silverbrook Research Pty Ltd Micro-electromechanical valve assembly
US6786570B2 (en) 1997-07-15 2004-09-07 Silverbrook Research Pty Ltd Ink supply arrangement for a printing mechanism of a wide format pagewidth inkjet printer
US6824251B2 (en) 1997-07-15 2004-11-30 Silverbrook Research Pty Ltd Micro-electromechanical assembly that incorporates a covering formation for a micro-electromechanical device
US6834939B2 (en) 2002-11-23 2004-12-28 Silverbrook Research Pty Ltd Micro-electromechanical device that incorporates covering formations for actuators of the device
US6880918B2 (en) 1997-07-15 2005-04-19 Silverbrook Research Pty Ltd Micro-electromechanical device that incorporates a motion-transmitting structure
US6880914B2 (en) 1997-07-15 2005-04-19 Silverbrook Research Pty Ltd Inkjet pagewidth printer for high volume pagewidth printing
US6886917B2 (en) 1998-06-09 2005-05-03 Silverbrook Research Pty Ltd Inkjet printhead nozzle with ribbed wall actuator
US6886918B2 (en) 1998-06-09 2005-05-03 Silverbrook Research Pty Ltd Ink jet printhead with moveable ejection nozzles
US6916082B2 (en) 1997-07-15 2005-07-12 Silverbrook Research Pty Ltd Printing mechanism for a wide format pagewidth inkjet printer
US6918707B2 (en) 1997-07-15 2005-07-19 Silverbrook Research Pty Ltd Keyboard printer print media transport assembly
US6927786B2 (en) 1997-07-15 2005-08-09 Silverbrook Research Pty Ltd Ink jet nozzle with thermally operable linear expansion actuation mechanism
US6929352B2 (en) 1997-07-15 2005-08-16 Silverbrook Research Pty Ltd Inkjet printhead chip for use with a pulsating pressure ink supply
US6932459B2 (en) 1997-07-15 2005-08-23 Silverbrook Research Pty Ltd Ink jet printhead
US6935724B2 (en) 1997-07-15 2005-08-30 Silverbrook Research Pty Ltd Ink jet nozzle having actuator with anchor positioned between nozzle chamber and actuator connection point
US6976751B2 (en) 1997-07-15 2005-12-20 Silverbrook Research Pty Ltd Motion transmitting structure
US6986613B2 (en) 1997-07-15 2006-01-17 Silverbrook Research Pty Ltd Keyboard
US7008046B2 (en) 1997-07-15 2006-03-07 Silverbrook Research Pty Ltd Micro-electromechanical liquid ejection device
US7008041B2 (en) 1997-07-15 2006-03-07 Silverbrook Research Pty Ltd Printing mechanism having elongate modular structure
US7022250B2 (en) 1997-07-15 2006-04-04 Silverbrook Research Pty Ltd Method of fabricating an ink jet printhead chip with differential expansion actuators
US7040738B2 (en) 1997-07-15 2006-05-09 Silverbrook Research Pty Ltd Printhead chip that incorporates micro-mechanical translating mechanisms
US7044584B2 (en) 1997-07-15 2006-05-16 Silverbrook Research Pty Ltd Wide format pagewidth inkjet printer
US7066574B2 (en) 1997-07-15 2006-06-27 Silverbrook Research Pty Ltd Micro-electromechanical device having a laminated thermal bend actuator
US7111924B2 (en) 1998-10-16 2006-09-26 Silverbrook Research Pty Ltd Inkjet printhead having thermal bend actuator heating element electrically isolated from nozzle chamber ink
US7131715B2 (en) 1997-07-15 2006-11-07 Silverbrook Research Pty Ltd Printhead chip that incorporates micro-mechanical lever mechanisms
US7144519B2 (en) 1998-10-16 2006-12-05 Silverbrook Research Pty Ltd Method of fabricating an inkjet printhead chip having laminated actuators
US7147302B2 (en) 1997-07-15 2006-12-12 Silverbrook Researh Pty Ltd Nozzle assembly
US7147305B2 (en) 1997-07-15 2006-12-12 Silverbrook Research Pty Ltd Printer formed from integrated circuit printhead
US7175260B2 (en) 2002-06-28 2007-02-13 Silverbrook Research Pty Ltd Ink jet nozzle arrangement configuration
US7195339B2 (en) 1997-07-15 2007-03-27 Silverbrook Research Pty Ltd Ink jet nozzle assembly with a thermal bend actuator
US7207654B2 (en) 1997-07-15 2007-04-24 Silverbrook Research Pty Ltd Ink jet with narrow chamber
US7240992B2 (en) 1997-07-15 2007-07-10 Silverbrook Research Pty Ltd Ink jet printhead incorporating a plurality of nozzle arrangement having backflow prevention mechanisms
US7246884B2 (en) 1997-07-15 2007-07-24 Silverbrook Research Pty Ltd Inkjet printhead having enclosed inkjet actuators
US7246883B2 (en) 1997-07-15 2007-07-24 Silverbrook Research Pty Ltd Motion transmitting structure for a nozzle arrangement of a printhead chip for an inkjet printhead
US7252366B2 (en) 1997-07-15 2007-08-07 Silverbrook Research Pty Ltd Inkjet printhead with high nozzle area density
AU2005239718B2 (en) * 1997-07-15 2007-08-09 Memjet Technology Limited Thermal actuator with corrugated heater element
US7267424B2 (en) 1997-07-15 2007-09-11 Silverbrook Research Pty Ltd Wide format pagewidth printer
US7278711B2 (en) 1997-07-15 2007-10-09 Silverbrook Research Pty Ltd Nozzle arrangement incorporating a lever based ink displacement mechanism
US7287836B2 (en) 1997-07-15 2007-10-30 Sil;Verbrook Research Pty Ltd Ink jet printhead with circular cross section chamber
US7303254B2 (en) 1997-07-15 2007-12-04 Silverbrook Research Pty Ltd Print assembly for a wide format pagewidth printer
US7334873B2 (en) 2002-04-12 2008-02-26 Silverbrook Research Pty Ltd Discrete air and nozzle chambers in a printhead chip for an inkjet printhead
US7360872B2 (en) 1997-07-15 2008-04-22 Silverbrook Research Pty Ltd Inkjet printhead chip with nozzle assemblies incorporating fluidic seals
US7381340B2 (en) 1997-07-15 2008-06-03 Silverbrook Research Pty Ltd Ink jet printhead that incorporates an etch stop layer
US7401901B2 (en) 1997-07-15 2008-07-22 Silverbrook Research Pty Ltd Inkjet printhead having nozzle plate supported by encapsulated photoresist
US7407269B2 (en) 2002-06-28 2008-08-05 Silverbrook Research Pty Ltd Ink jet nozzle assembly including displaceable ink pusher
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US7434915B2 (en) 1997-07-15 2008-10-14 Silverbrook Research Pty Ltd Inkjet printhead chip with a side-by-side nozzle arrangement layout
US7461924B2 (en) 1997-07-15 2008-12-09 Silverbrook Research Pty Ltd Printhead having inkjet actuators with contractible chambers
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US7758142B2 (en) 2002-04-12 2010-07-20 Silverbrook Research Pty Ltd High volume pagewidth printing
US7784902B2 (en) 1997-07-15 2010-08-31 Silverbrook Research Pty Ltd Printhead integrated circuit with more than 10000 nozzles
US7802871B2 (en) 1997-07-15 2010-09-28 Silverbrook Research Pty Ltd Ink jet printhead with amorphous ceramic chamber
US7854500B2 (en) 1998-11-09 2010-12-21 Silverbrook Research Pty Ltd Tamper proof print cartridge for a video game console
US7891767B2 (en) 1997-07-15 2011-02-22 Silverbrook Research Pty Ltd Modular self-capping wide format print assembly
US7967418B2 (en) 1997-07-15 2011-06-28 Silverbrook Research Pty Ltd Printhead with nozzles having individual supply passages extending into substrate
US8029101B2 (en) 1997-07-15 2011-10-04 Silverbrook Research Pty Ltd Ink ejection mechanism with thermal actuator coil
US8109611B2 (en) 2002-04-26 2012-02-07 Silverbrook Research Pty Ltd Translation to rotation conversion in an inkjet printhead

Cited By (257)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3841557A1 (de) * 1988-12-09 1990-06-13 Fraunhofer Ges Forschung Mikromechanischer manipulator
FR2647566A1 (fr) * 1989-05-23 1990-11-30 Al Sabagh Abdulrahman Dispositif d'aeration automodulaire destine a regulariser la temperature dans une enceinte
EP0478956A2 (de) * 1990-10-04 1992-04-08 Forschungszentrum Karlsruhe GmbH Mikromechanisches Element
DE4031248A1 (de) * 1990-10-04 1992-04-09 Kernforschungsz Karlsruhe Mikromechanisches element
EP0478956A3 (en) * 1990-10-04 1992-11-25 Kernforschungszentrum Karlsruhe Gmbh Micromechanical element
DE4406377A1 (de) * 1994-02-26 1995-08-31 Abb Patent Gmbh Vorrichtung zur Beheizung eines Streifens aus Thermobimetall, Formgedächtnislegierung oder dergleichen
US7217048B2 (en) 1997-07-15 2007-05-15 Silverbrook Research Pty Ltd Pagewidth printer and computer keyboard combination
US7278711B2 (en) 1997-07-15 2007-10-09 Silverbrook Research Pty Ltd Nozzle arrangement incorporating a lever based ink displacement mechanism
US6746105B2 (en) 1997-07-15 2004-06-08 Silverbrook Research Pty. Ltd. Thermally actuated ink jet printing mechanism having a series of thermal actuator units
US6776476B2 (en) 1997-07-15 2004-08-17 Silverbrook Research Pty Ltd. Ink jet printhead chip with active and passive nozzle chamber structures
US6783217B2 (en) 1997-07-15 2004-08-31 Silverbrook Research Pty Ltd Micro-electromechanical valve assembly
US6786570B2 (en) 1997-07-15 2004-09-07 Silverbrook Research Pty Ltd Ink supply arrangement for a printing mechanism of a wide format pagewidth inkjet printer
US6824251B2 (en) 1997-07-15 2004-11-30 Silverbrook Research Pty Ltd Micro-electromechanical assembly that incorporates a covering formation for a micro-electromechanical device
US8419165B2 (en) 1997-07-15 2013-04-16 Zamtec Ltd Printhead module for wide format pagewidth inkjet printer
US6840600B2 (en) 1997-07-15 2005-01-11 Silverbrook Research Pty Ltd Fluid ejection device that incorporates covering formations for actuators of the fluid ejection device
US6848780B2 (en) 1997-07-15 2005-02-01 Sivlerbrook Research Pty Ltd Printing mechanism for a wide format pagewidth inkjet printer
US6880918B2 (en) 1997-07-15 2005-04-19 Silverbrook Research Pty Ltd Micro-electromechanical device that incorporates a motion-transmitting structure
US6880914B2 (en) 1997-07-15 2005-04-19 Silverbrook Research Pty Ltd Inkjet pagewidth printer for high volume pagewidth printing
US8408679B2 (en) 1997-07-15 2013-04-02 Zamtec Ltd Printhead having CMOS drive circuitry
US8287105B2 (en) 1997-07-15 2012-10-16 Zamtec Limited Nozzle arrangement for an inkjet printhead having an ink ejecting roof structure
US6916082B2 (en) 1997-07-15 2005-07-12 Silverbrook Research Pty Ltd Printing mechanism for a wide format pagewidth inkjet printer
US6918707B2 (en) 1997-07-15 2005-07-19 Silverbrook Research Pty Ltd Keyboard printer print media transport assembly
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US6929352B2 (en) 1997-07-15 2005-08-16 Silverbrook Research Pty Ltd Inkjet printhead chip for use with a pulsating pressure ink supply
US6932459B2 (en) 1997-07-15 2005-08-23 Silverbrook Research Pty Ltd Ink jet printhead
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