DE102009000463A1 - Method for manufacturing fitting module of gas sensor, involves injection molding and sintering ceramic body that is formed to fit in housing, where injection molding of ceramic body is made directly onto sensor element of gas sensor - Google Patents
Method for manufacturing fitting module of gas sensor, involves injection molding and sintering ceramic body that is formed to fit in housing, where injection molding of ceramic body is made directly onto sensor element of gas sensor Download PDFInfo
- Publication number
- DE102009000463A1 DE102009000463A1 DE200910000463 DE102009000463A DE102009000463A1 DE 102009000463 A1 DE102009000463 A1 DE 102009000463A1 DE 200910000463 DE200910000463 DE 200910000463 DE 102009000463 A DE102009000463 A DE 102009000463A DE 102009000463 A1 DE102009000463 A1 DE 102009000463A1
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- DE
- Germany
- Prior art keywords
- ceramic body
- sensor element
- injection molding
- ceramic
- gas sensor
- 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.)
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-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/4078—Means for sealing the sensor element in a housing
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einem Verfahren zur Herstellung eines Verbauungsmoduls eines Gassensors nach dem Oberbegriff des Anspruchs 1.The The invention is based on a method for producing a building module a gas sensor according to the preamble of claim 1.
Bei
einem bekannten Verfahren zur Herstellung eines aus einem Sensorelement
und einem Keramikkörper bestehenden Verbauungsmoduls (
Offenbarung der ErfindungDisclosure of the invention
Das erfindungsgemäße Verfahren mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass durch das Spritzgießen des Keramikkörpers unmittelbar auf den dafür bestimmten Sensorabschnitt das Verfahren zur Herstellung des gasdichten Verbauungsmoduls wesentlich vereinfacht und verkürzt wird. Das bei dem bekannten Herstellungsverfahren getrennte und schrittweise durchgeführte Herstellen des Keramikkörpers durch Spritzgießen mit Vorsehen eines Durchsteckkanals für das Sensorelement unter Anpassen des Kanalquerschnitts an den Querschnitt des Sensorelements und einen beim Sintern einsetzenden Materialschwund und das positionsgenaue Einschieben des Sensorelements in den Keramikkörper sowie die Fixierung des Sensorelements im Durchgangskanal entfallen ebenso wie die Notwendigkeit, zur Gewährleistung der Gasdichtheit zwischen Sensorelement und Keramikkörper eine weiche, leichtfließende, innere Materialkomponente des Keramikkörpers vorzusehen, der im aufwendigen Zweikomponenten-Spritzgussverfahren hergestellt werden muss.The inventive method with the features of Claim 1 has the advantage that by injection molding of the ceramic body directly on the intended Sensor section, the method for producing the gastight Verbauungsmoduls considerably simplified and shortened. The in the known The production process is separate and gradual Producing the ceramic body by injection molding with provision of a penetration channel for the sensor element below Adjusting the channel cross section to the cross section of the sensor element and an onset of sintering material shrinkage and positionally accurate Insertion of the sensor element in the ceramic body as well the fixation of the sensor element in the passage omitted as well like the need to ensure gas tightness between sensor element and ceramic body a soft, easily flowing, to provide inner material component of the ceramic body, which are produced in a complex two-component injection molding process got to.
Auch auf das üblicherweise bei planaren Sensorelementen nach Sinterung durchgeführte, aufwendige Schleifen der Kanten zur Vermeidung von unzulässig hohen mechanischen Spannungen im Betrieb kann verzichtet werden, da diese Problematik durch das Direktumspritzen des vorzugsweise ungesinterten Sensorelements vermieden werden kann, wenn in dem nicht vom Keramikkörper umhüllten Bereich des Sensorelements dessen Seitenkanten mit einer vom Keramikkörper ausgehenden ”Keramikzunge” belegt werden. Die Funktionsschichten des Sensorelements werden dabei durch geeignete Formgebung des Spritzgusswerkzeugs abgedeckt und vor überströmender Spritzgussmasse geschützt. Mit dem erfindungsgemäßen Verfahren können sehr dünne Sensorelemente, die leicht zerbrechen, ebenso zuverlässig zum Verbauungskörper gefügt und im Gehäuse verbaut werden, wie dickere Sensorelemente in Stabform oder beliebiger anderer geometrischer Form.Also usually on the planar sensor elements Sintering carried out, consuming grinding of the edges to avoid unacceptably high mechanical stresses in the Operation can be dispensed with, since this problem is due to the direct encapsulation the preferably non-sintered sensor element can be avoided, if not wrapped in the ceramic body Area of the sensor element whose side edges with one of the ceramic body outgoing "ceramic tongue" are occupied. The Functional layers of the sensor element are thereby formed by suitable shaping covered by the injection mold and before overflowing Injection molding protected. With the invention Procedures can be very thin sensor elements that easy to break, just as reliable to the obstruction body be joined and installed in the housing, like thicker ones Sensor elements in rod form or any other geometric Shape.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Verfahrens möglich.By the measures listed in the further claims are advantageous developments and improvements of the claim 1 specified method possible.
Gemäß einer vorteilhaften Ausführungsform der Erfindung wird zum Spritzgießen des Keramikkörpers ein die gewünschte Form des Keramikkörpers vorgebendes Spritzgusswerkzeug verwendet, in das das Sensorelement vorzugsweise als ungesinterter Grünling eingelegt wird. Beim anschließenden Sinterprozess werden Sensorelement und darauf aufgespritzter Keramikkörper gemeinsam gesintert. Die gemeinsame Sinterung verhindert ein unzulässig starkes Verkrümmen des insbesondere dünnen Sensorelements.According to one advantageous embodiment of the invention is for injection molding of the ceramic body a the desired shape of Ceramic body using prescribing injection molding tool, in which the sensor element preferably as unsintered green compact is inserted. During the subsequent sintering process Sensor element and sprayed ceramic body together sintered. The common sintering prevents an unacceptably strong Warp the particular thin sensor element.
Gemäß einer vorteilhaften Ausführungsform der Erfindung weist das Sensorelement einen Keramikträger auf und bestehen Keramikträger und Keramikkörper aus demselben Keramikmaterial, vorzugsweise einem keramischen Spritzguss-Compound. Dadurch weisen Sensorelement und Keramikkörper die gleiche Sinterkinetik auf, so dass beim gemeinsamen Sintern des ungesinterten Sensorelements und des direkt aufgespritzten Keramikkörpers ein monolithischer Verbauungskörper entsteht. Eine gleiche Sinterkinetik lässt sich auch bei Verwendung von unterschiedlichen Keramikmaterialien erreichen, wenn diese bezüglich ihrer Sinterkinetik entsprechend angepasst werden.According to one advantageous embodiment of the invention, the sensor element a ceramic carrier and consist ceramic carrier and ceramic body of the same ceramic material, preferably a ceramic injection molding compound. As a result, have sensor element and ceramic bodies have the same sintering kinetics, so that in the common sintering of the unsintered sensor element and the directly sprayed ceramic body a monolithic Building body arises. An equal sintering rate lets even when using different ceramic materials reach, if this according to their sintering kinetics accordingly be adjusted.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Die Erfindung ist anhand eines in der Zeichnung dargestellten Ausführungsbeispiels in der nachfolgenden Beschreibung näher erläutert. Es zeigen in schematischer Darstellung:The Invention is based on an embodiment shown in the drawing explained in more detail in the following description. In a schematic representation:
Das
in
Zur
Verbauung in einem metallischen Gehäuse
Zur
Herstellung des Verbauungsmoduls
Das
beschriebene Verfahren zur Herstellung des Verbauungsmoduls
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102007025626 A1 [0002] - DE 102007025626 A1 [0002]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910000463 DE102009000463A1 (en) | 2009-01-29 | 2009-01-29 | Method for manufacturing fitting module of gas sensor, involves injection molding and sintering ceramic body that is formed to fit in housing, where injection molding of ceramic body is made directly onto sensor element of gas sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910000463 DE102009000463A1 (en) | 2009-01-29 | 2009-01-29 | Method for manufacturing fitting module of gas sensor, involves injection molding and sintering ceramic body that is formed to fit in housing, where injection molding of ceramic body is made directly onto sensor element of gas sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009000463A1 true DE102009000463A1 (en) | 2010-08-05 |
Family
ID=42308720
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200910000463 Withdrawn DE102009000463A1 (en) | 2009-01-29 | 2009-01-29 | Method for manufacturing fitting module of gas sensor, involves injection molding and sintering ceramic body that is formed to fit in housing, where injection molding of ceramic body is made directly onto sensor element of gas sensor |
Country Status (1)
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DE (1) | DE102009000463A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011078129A1 (en) | 2011-06-27 | 2012-12-27 | Robert Bosch Gmbh | Method for manufacturing sensor element of oxygen sensor for detecting characteristic of gas in gas compartment, involves arranging functional element in unsintered state in mold cavity of molding tool |
DE102011082173A1 (en) | 2011-09-06 | 2013-03-07 | Robert Bosch Gmbh | Sensor element e.g. lambda probe for detecting e.g. temperature of e.g. nitrogen oxide in gas space, used in motor car, has porous shaped portion that embeds sides of functional element and is spaced by air gap from functional element |
CN103922753A (en) * | 2013-01-11 | 2014-07-16 | 罗伯特·博世有限公司 | Method for producing a receptacle for a sensor element |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007025626A1 (en) | 2006-07-19 | 2008-01-24 | Robert Bosch Gmbh | gas sensor |
-
2009
- 2009-01-29 DE DE200910000463 patent/DE102009000463A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007025626A1 (en) | 2006-07-19 | 2008-01-24 | Robert Bosch Gmbh | gas sensor |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011078129A1 (en) | 2011-06-27 | 2012-12-27 | Robert Bosch Gmbh | Method for manufacturing sensor element of oxygen sensor for detecting characteristic of gas in gas compartment, involves arranging functional element in unsintered state in mold cavity of molding tool |
DE102011082173A1 (en) | 2011-09-06 | 2013-03-07 | Robert Bosch Gmbh | Sensor element e.g. lambda probe for detecting e.g. temperature of e.g. nitrogen oxide in gas space, used in motor car, has porous shaped portion that embeds sides of functional element and is spaced by air gap from functional element |
CN103922753A (en) * | 2013-01-11 | 2014-07-16 | 罗伯特·博世有限公司 | Method for producing a receptacle for a sensor element |
DE102013200281A1 (en) | 2013-01-11 | 2014-07-17 | Robert Bosch Gmbh | Method for producing a receptacle for a sensor element |
US9877396B2 (en) | 2013-01-11 | 2018-01-23 | Robert Bosch Gmbh | Method for producing a receptacle for a sensor element |
CN103922753B (en) * | 2013-01-11 | 2018-05-22 | 罗伯特·博世有限公司 | The method that manufacture is used for the receiver of sensing element |
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Legal Events
Date | Code | Title | Description |
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R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: G01N0027403000 Ipc: G01N0027406000 |
|
R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: G01N0027403000 Ipc: G01N0027406000 Effective date: 20140721 |
|
R012 | Request for examination validly filed | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |