DE102005044392A1 - Piezoelectric actuator, has contact pins joined to metallization via electrically conductive contacts - Google Patents
Piezoelectric actuator, has contact pins joined to metallization via electrically conductive contacts Download PDFInfo
- Publication number
- DE102005044392A1 DE102005044392A1 DE102005044392A DE102005044392A DE102005044392A1 DE 102005044392 A1 DE102005044392 A1 DE 102005044392A1 DE 102005044392 A DE102005044392 A DE 102005044392A DE 102005044392 A DE102005044392 A DE 102005044392A DE 102005044392 A1 DE102005044392 A1 DE 102005044392A1
- Authority
- DE
- Germany
- Prior art keywords
- piezoelectric actuator
- solder material
- metallization
- contact pins
- electrically conductive
- 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- Withdrawn
Links
- 238000001465 metallisation Methods 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 37
- 229910000679 solder Inorganic materials 0.000 claims abstract description 30
- 238000002844 melting Methods 0.000 claims abstract description 14
- 230000008018 melting Effects 0.000 claims abstract description 9
- 238000005476 soldering Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/87—Electrodes or interconnections, e.g. leads or terminals
- H10N30/875—Further connection or lead arrangements, e.g. flexible wiring boards, terminal pins
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
- H10N30/06—Forming electrodes or interconnections, e.g. leads or terminals
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Die Erfindung betrifft das Gebiet der Piezoaktoren.The Invention relates to the field of piezoelectric actuators.
Bei Piezoaktoren sind die Metallisierungen des Aktorkörpers mit den Kontaktstiften über elektrisch leitende Kontakte verbunden, die z.B. aus mehreren dünnen parallelen Drähten (einer so genannten „Harfe") bestehen. Es hat sich jedoch gezeigt, dass während des Betriebs des Piezoaktors die Verbindung zwischen der Metallisierung des Aktorkörpers und den Kontaktstiften erhöhter Belastung ausgesetzt ist und die Lebensdauer des Piezoaktors oftmals durch Brüche oder Störungen dieser Verbindung limitiert ist.at Piezo actuators are the metallizations of the actuator body with the pins over electrically conductive contacts connected, e.g. from several thin parallel wires It has (a so-called "harp") However, it turned out that during the operation of the piezoelectric actuator the connection between the metallization of the actuator body and the contact pins increased Load is exposed and the life of the piezoelectric actuator often through breaks or faults this connection is limited.
Es stellt sich daher die Aufgabe, einen Piezoaktor zu schaffen, bei der eine verbesserte Verbindung zwischen der Metallisierung des Aktorkörpers und den Kontaktstiften erreicht werden kann.It Therefore, the task is to create a piezoelectric actuator, at the improved connection between the metallization of the Actuator body and the contact pins can be achieved.
Diese Aufgabe wird mit einem Piezoaktor gemäß den Merkmalen des Anspruchs 1 gelöst. Demgemäß ist ein Piezoaktor umfassend einen Aktorkörper, mindestens eine Metallisierung und mindestens einen Kontaktstift, welcher mit der mindestens einen Metallisierung verbinden ist, vorgesehen, welcher dadurch gekennzeichnet ist, dass in der Verbindung ein niedrig schmelzendes Lotmaterial verwendet wird und/oder vorgesehen ist.These Task is with a piezoelectric actuator according to the features of the claim 1 solved. Accordingly, a Piezoactuator comprising an actuator body, at least one metallization and at least one contact pin connected to the at least one metallization is provided, provided, which is characterized in that used in the compound a low melting solder material is and / or is provided.
Durch diese Vorgehensweise kann je nach Anwendung einer oder mehrere der folgenden Vorteile erreicht werden:
- – Dadurch, dass die Lotverbindung niedrig schmelzend ist, kann eine zuverlässige Verbindung auch bei hohen Temperaturen erreicht werden.
- – Die Lotverbindung ist vorzugsweise so niedrig schmelzend, dass sie bei Betriebstemperatur des Piezoaktors zumindest teilweise aufgeschmolzen ist. Dadurch werden etwaige Risse oder Brüche an den Lotstellen geheilt bzw. entfernt.
- – Durch die Wahl einer niedrig schmelzenden Lötverbindung kann der Anwendungs-Temperaturbereich des Piezoaktors erweitert werden.
- – Thermo-mechanische Spannungen im Piezoaktor werden gemildert bzw. minimiert.
- – Durch die Verwendung eines solchen Lötmaterials ist auch der Wärmefluss im Piezoaktor optimierbar.
- - The fact that the solder joint is low melting, a reliable connection can be achieved even at high temperatures.
- - The solder joint is preferably so low melting that it is at least partially melted at the operating temperature of the piezoelectric actuator. As a result, any cracks or fractures are cured or removed at the Lotstellen.
- - By choosing a low-melting solder joint, the application temperature range of the piezoelectric actuator can be extended.
- - Thermo-mechanical stresses in the piezoelectric actuator are mitigated or minimized.
- - Through the use of such a solder material and the heat flow in the piezoelectric actuator can be optimized.
Gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung ist das Lotmaterial an der mindestens einen Metallisierung angebracht und/oder vorgesehen. Dadurch kann insbesondere der „Selbstreparatureffekt" bei vielen Anwendungen erreicht werden.According to one preferred embodiment of The present invention is the solder material on the at least one Metallization attached and / or provided. As a result, in particular the "self-repair effect" can be achieved in many applications become.
Gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung besitzt das Lotmaterial einen Schmelzpunkt von ≥ 50 °C und ≤ 200 °C. Dieser Schmelzpunkt hat insbesondere bei vielen Anwendungen den Vorteil, dass bei Betriebstemperatur des Piezoaktors das Lotmaterial zumindest teilweise flüssig ist. Bevorzugt besitzt das Lotmaterial einen Schmelzpunkt von ≥ 80 °C und ≤ 180 °C, noch bevorzugt ≥ 100 °C und ≤ 150 °C.According to one preferred embodiment of present invention, the solder material has a melting point of ≥ 50 ° C and ≤ 200 ° C. This Melting point has the advantage in particular in many applications that at the operating temperature of the piezoelectric actuator, the solder material at least partly liquid is. Preferably, the solder material has a melting point of ≥ 80 ° C and ≤ 180 ° C, more preferably ≥ 100 ° C and ≤ 150 ° C.
Gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung ist das Lotmaterial zumindest teilweise von einem Stützwerkstoff umgeben. Dadurch kann auch bei Verflüssigung des Lotmaterials eine stabile und effektive Verbindung erreicht werden.According to one preferred embodiment of present invention, the solder material is at least partially of a support material surround. As a result, even with liquefaction of the solder material a stable and effective connection can be achieved.
Gemäß einer bevorzugten Ausführungsform der vorliegenden Erfindung besteht der Stützwerkstoff aus einem isolierenden Kunststoff.According to one preferred embodiment of Present invention, the support material consists of an insulating Plastic.
Die vorliegende Erfindung betrifft außerdem ein Verfahren zum Herstellen eines erfindungsgemäßen Piezoaktors, enthaltend die Schritte:
- a) Verbinden mindestens einer Metallisierung des Piezoaktors mit zu mindestens einem der Kontaktstifte führenden Verbindungselementen durch Löten mit dem niedrig schmelzenden Lotmaterial
- b) Anbringen des Stützwerkstoffes um das Lötmaterial, bevorzugt durch Giessen.
- a) connecting at least one metallization of the piezoelectric actuator with at least one of the contact pins leading connecting elements by soldering with the low-melting solder material
- b) attaching the support material to the solder material, preferably by casting.
Dadurch kann ein erfindungsgemäßer Piezoaktor auf effektive und sichere Weise hergestellt werden.Thereby can a piezoelectric actuator according to the invention be produced in an effective and safe way.
Die vorgenannten sowie die beanspruchten und in den Ausführungsbeispielen beschriebenen erfindungsgemäß zu verwendenden Bauteile unterliegen in ihrer Größe, Formgestaltung, Materialauswahl und technischen Konzeption keinen besonderen Ausnahmebedingungen, so dass die in dem Anwendungsgebiet bekannten Auswahlkriterien uneingeschränkt Anwendung finden können.The the aforementioned and the claimed and in the embodiments described to be used according to the invention Components are subject in size, shape design, Material selection and technical conception no special exceptions, so that the selection criteria known in the field of application apply without restriction can find.
Weitere Einzelheiten, Merkmale und Vorteile des Gegenstandes der Erfindung ergeben sich aus den Unteransprüchen sowie aus der nachfolgenden Beschreibung der zugehörigen Zeichnungen, in denen – beispielhaft – mehrere Ausführungsbeispiele des erfindungsgemäßen Piezoaktors dargestellt sind. In den Zeichnungen zeigt:Further Details, features and advantages of the subject matter of the invention emerge from the dependent claims as well as from the following description of the accompanying drawings, in which - by way of example - several Embodiments of the inventive piezoelectric actuator are shown. In the drawings shows:
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005044392A DE102005044392A1 (en) | 2005-09-16 | 2005-09-16 | Piezoelectric actuator, has contact pins joined to metallization via electrically conductive contacts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005044392A DE102005044392A1 (en) | 2005-09-16 | 2005-09-16 | Piezoelectric actuator, has contact pins joined to metallization via electrically conductive contacts |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005044392A1 true DE102005044392A1 (en) | 2007-03-29 |
Family
ID=37832420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005044392A Withdrawn DE102005044392A1 (en) | 2005-09-16 | 2005-09-16 | Piezoelectric actuator, has contact pins joined to metallization via electrically conductive contacts |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005044392A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE131265T1 (en) * | 1983-07-06 | 1985-08-14 | Mecondor S.p.A., Mailand/Milano | MULTILAYERED HIGH CAPACITY RAILS. |
DE2910078C2 (en) * | 1978-03-15 | 1989-03-09 | Gould Inc., Rolling Meadows, Ill., Us | |
DE29511991U1 (en) * | 1995-07-28 | 1995-09-21 | Metallwerke Otto Dingerkus GmbH, 57439 Attendorn | Safety valve |
DE19715488C1 (en) * | 1997-04-14 | 1998-06-25 | Siemens Ag | Piezoelectric actuator |
DE19931927A1 (en) * | 1999-07-08 | 2001-08-09 | Bosch Gmbh Robert | Manufacture of piezoelectric actuator for fuel injection system in internal combustion engine, by separating piezoceramic multilayers from base material using water jet cutting |
DE10215572A1 (en) * | 2001-04-10 | 2002-12-05 | Murata Manufacturing Co | Ceramic electronic component used in electronics comprises ceramic body, terminal electrodes on body, and connecting clamps for connecting electrodes using tin-containing solder |
-
2005
- 2005-09-16 DE DE102005044392A patent/DE102005044392A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2910078C2 (en) * | 1978-03-15 | 1989-03-09 | Gould Inc., Rolling Meadows, Ill., Us | |
DE131265T1 (en) * | 1983-07-06 | 1985-08-14 | Mecondor S.p.A., Mailand/Milano | MULTILAYERED HIGH CAPACITY RAILS. |
DE29511991U1 (en) * | 1995-07-28 | 1995-09-21 | Metallwerke Otto Dingerkus GmbH, 57439 Attendorn | Safety valve |
DE19715488C1 (en) * | 1997-04-14 | 1998-06-25 | Siemens Ag | Piezoelectric actuator |
DE19931927A1 (en) * | 1999-07-08 | 2001-08-09 | Bosch Gmbh Robert | Manufacture of piezoelectric actuator for fuel injection system in internal combustion engine, by separating piezoceramic multilayers from base material using water jet cutting |
DE10215572A1 (en) * | 2001-04-10 | 2002-12-05 | Murata Manufacturing Co | Ceramic electronic component used in electronics comprises ceramic body, terminal electrodes on body, and connecting clamps for connecting electrodes using tin-containing solder |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection | ||
8170 | Reinstatement of the former position | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20110401 |