DE102014216469A1 - Control unit for a motor vehicle having a first printed circuit board section with at least one sensor element and a second, mechanically decoupled from the first printed circuit board section - Google Patents
Control unit for a motor vehicle having a first printed circuit board section with at least one sensor element and a second, mechanically decoupled from the first printed circuit board section Download PDFInfo
- Publication number
- DE102014216469A1 DE102014216469A1 DE102014216469.9A DE102014216469A DE102014216469A1 DE 102014216469 A1 DE102014216469 A1 DE 102014216469A1 DE 102014216469 A DE102014216469 A DE 102014216469A DE 102014216469 A1 DE102014216469 A1 DE 102014216469A1
- Authority
- DE
- Germany
- Prior art keywords
- circuit board
- printed circuit
- intermediate region
- board section
- thickness
- 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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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0277—Bendability or stretchability details
- H05K1/0278—Rigid circuit boards or rigid supports of circuit boards locally made bendable, e.g. by removal or replacement of material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0026—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units
- H05K5/0078—Casings, cabinets or drawers for electric apparatus provided with connectors and printed circuit boards [PCB], e.g. automotive electronic control units specially adapted for acceleration sensors, e.g. crash sensors, airbag sensors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09009—Substrate related
- H05K2201/09036—Recesses or grooves in insulating substrate
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10151—Sensor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
- H05K2201/2009—Reinforced areas, e.g. for a specific part of a flexible printed circuit
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/20—Details of printed circuits not provided for in H05K2201/01 - H05K2201/10
- H05K2201/2045—Protection against vibrations
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
- H05K2203/0228—Cutting, sawing, milling or shearing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4688—Composite multilayer circuits, i.e. comprising insulating layers having different properties
- H05K3/4691—Rigid-flexible multilayer circuits comprising rigid and flexible layers, e.g. having in the bending regions only flexible layers
Abstract
Es wird ein Steuergerät für ein Kraftfahrzeug, beispielsweise für Insassenschutzeinrichtungen oder die Fahrdynamiksensierung, mit einem ersten Leiterplattenabschnitt (3a) mit zumindest einem Sensorelement (MEMS) sowie einem zweiten, vom ersten mechanisch entkoppelten, jedoch elektrisch verbundenen Leiterplattenabschnitt (3c, 3e) mit weiteren Schaltungselementen vorgestellt, bei dem der erste und zweite Leiterplattenabschnitt aus einem gemeinsamen Leiterplattenstück (3) durch Dickenreduzierung zumindest ein verdünnter Zwischenbereich (3b, 3d) erzeugt ist, wobei auf oder im Zwischenbereich (3b, 3d) Leiterbahnen zum elektrischen Verbinden der Leiterplattenabschnitte (3a, 3c, 3e) angeordnet sind. Dabei können im verdünnten Zwischenbereich (3b, 3d) zwischen Leiterplattenabschnitten (3a, 3c, 3e) in vorgegebenem Abstand zu den Leiterplattenabschnitten (3a, 3c, 3e) sowie in vorgegebener Breite und/oder Dicke lokale Dickstellen (3g) verbleiben und zudem auf den Dickstellen (3g) innerhalb des Zwischenbereichs zusätzliche Entkopplungsmasse(n) (m) angeordnet sein.It is a control device for a motor vehicle, for example for occupant protection devices or driving dynamics sensing, with a first circuit board portion (3a) with at least one sensor element (MEMS) and a second, mechanically decoupled from the first, but electrically connected circuit board portion (3c, 3e) with other circuit elements in which the first and second printed circuit board section is produced from a common printed circuit board piece (3) by reducing the thickness of at least one thinned intermediate region (3b, 3d), whereby printed conductors for electrically connecting the printed circuit board sections (3a, 3c) are arranged on or in the intermediate region (3b, 3d) , 3e) are arranged. In this case, in the thinned intermediate region (3b, 3d) between printed circuit board sections (3a, 3c, 3e) at a predetermined distance from the printed circuit board sections (3a, 3c, 3e) and in predetermined width and / or thickness, local thick places (3g) remain and, in addition, contact the Thick places (3g) within the intermediate area additional decoupling mass (s) (m) may be arranged.
Description
Die Erfindung betrifft ein Steuergerät für ein Kraftfahrzeug sowie ein Verfahren zu dessen Herstellung gemäß den Oberbegriffen der unabhängigen Ansprüche. The invention relates to a control device for a motor vehicle and a method for its production according to the preambles of the independent claims.
Ein solches Steuergerät beispielsweise aus der die
Aufgabe der Erfindung ist daher, ein verbessertes Verfahren zur Herstellung eines solchen Steuergeräts sowie ein entsprechendes Steuergerät anzugeben.The object of the invention is therefore to provide an improved method for producing such a control device and a corresponding control unit.
Diese Aufgabe wird durch die Merkmale der unabhängigen Ansprüche gelöst. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen, wobei auch Kombinationen und Weiterbildungen einzelner Merkmale miteinander denkbar sind.This object is solved by the features of the independent claims. Advantageous developments of the invention will become apparent from the dependent claims, and combinations and developments of individual features are conceivable with each other.
Ein wesentlicher Gedanke der Erfindung besteht darin, dass ausgehend von der
Für die vorliegende Erfindung ist die Anordnung der Leiterplattenabschnitte in einem Winkel zueinander zwar nicht erforderlich, jedoch hat sich die Beherrschbarkeit der Technologie und die Eignung für eine mechanische Entkopplung der Leiterplattenabschnitte voneinander aber durch Versuche nachweisen lassen und so ergibt sich eine besonders geeignete Möglichkeit der Herstellung der erfindungsgemäßen Steuergeräte.Although the arrangement of the printed circuit board sections at an angle to one another is not required for the present invention, the controllability of the technology and the suitability for mechanical decoupling of the printed circuit board sections from each other has been demonstrated by experiments, and this results in a particularly suitable way of producing the printed circuit board Control devices according to the invention.
Das Steuergerät dient also beispielsweise für Steuerung und damit auch Auslösung von Insassenschutzeinrichtungen oder der Erfassung und Bereitstellung von Fahrdynamik-Sensordaten und weist einen ersten Leiterplattenabschnitt mit zumindest einem Sensorelement sowie zumindest einen zweiten, vom ersten mechanisch entkoppelten, jedoch elektrisch verbundenen Leiterplattenabschnitt mit weiteren Schaltungselementen auf. Selbst verständlich können auch noch weitere zusätzliche Leiterplattenabschnitte als auch weiterer elektronischer Bauelemente auf den 1. Leiterplattenabschnitt mit zusammen mit dem Sensorelement angeordnet sein.The control unit thus serves, for example, for controlling and thus triggering occupant protection devices or detecting and providing driving dynamics sensor data and has a first printed circuit board section with at least one sensor element and at least one second circuit board section mechanically decoupled, but electrically connected to further circuit elements. Of course, even further additional printed circuit board sections as well as further electronic components can be arranged on the first printed circuit board section together with the sensor element.
Kerngedanke ist also, dass der erste und zweite Leiterplattenabschnitt aus einem gemeinsamen Leiterplattenstück durch Dickenreduzierung zumindest ein verdünnter Zwischenbereich erzeugt ist, wobei auf oder im Zwischenbereich Leiterbahnen zum elektrischen Verbinden der Leiterplattenabschnitte angeordnet sind. Die Dickenreduzierung kann dabei beispielsweise durch Tiefenfräsen, Ätzen oder vergleichbare an sich bekannte Fertigungstechnologien für Leiterplatten erzeugt werden. The core idea is therefore that the first and second printed circuit board section is produced from a common printed circuit board section by reducing the thickness at least a thinned intermediate region, wherein on or in the intermediate region conductor tracks for electrically connecting the printed circuit board sections are arranged. Thickness reduction can be produced, for example, by deep milling, etching or comparable production technologies known per se for printed circuit boards.
Die Schnittstellen zwischen den beiden Leiterplattenabschnitten 1 & 2 jeweils zu den dickenreduzierten Leiterplattenstücken dienen aufgrund des Querschnittswechsels der Körperschalldämpfung zwischen den beiden Leiterplattenabschnitten. The interfaces between the two
Die Leiterbahnen können dabei entweder auf einer nicht durch die Dickenreduzierung beeinflussten Außenseite des Leiterplattenstück oder bei entsprechenden Mehrebenenleiterplatten im Inneren, also innenliegenden Leiterplattenebenen realisiert werden. Zudem sind vorzugsweise Dämpfungselemente gerade für den 1. Leiterplattenabschnitt mit den Sensorelementen vorgesehen.The conductor tracks can be realized either on an outside of the printed circuit board piece that is not influenced by the reduction in thickness or in the case of corresponding multi-level printed circuit boards in the interior, that is to say internal printed circuit board levels. In addition, damping elements are preferably provided for the first printed circuit board section with the sensor elements.
Vorzugsweise sind auf dem zweiten oder einem weiteren dritten, vom ersten ebenfalls durch Dickenreduzierung zumindest eines verdünnten Zwischenbereichs wiederum entkoppelten Leiterplattenabschnitts die Steckerkontakte angeordnet. The plug contacts are preferably arranged on the second or a further third printed circuit board section, which in turn is decoupled from the first printed circuit board section, likewise by reducing the thickness of at least one thinned intermediate region.
Dadurch wird sichergestellt, dass mechanische Bewegungen ausgehend vom Steckerbereich nicht auf dasjenige Leiterplattenstück mit dem bzw. den Sensorelement(en) gelangen. This ensures that mechanical movements, starting from the connector area, do not reach that part of the board with the sensor element (s).
Neben dem Maß der Dickenreduzierung bzw. der verbleibenden Dicke im verdünnten Zwischenbereich im verdünnten Zwischenbereich und dem Abstand zwischen den Leiterplattenabschnitten bzw. der entsprechenden Breite des Zwischenbereichs können in einer bevorzugten Weiterbildung zwischen Leiterplattenabschnitten in vorgegebenem Abstand zu den Leiterplattenabschnitten sowie in vorgegebener Breite und/oder Dicke lokale Dickstellen verbleiben, welche ebenfalls die Schwingungseigenschaften und damit die Entkopplung der Leiterplattenabschnitte voneinander beeinflussen. Vorzugsweise kann dabei auf den Dickstellen innerhalb des Zwischenbereichs eine zusätzliche Entkopplungsmasse angeordnet werden. Auf diesen Dickstellen werden beispielsweise mittels Dickschichtauftrags oder Löten oder Kleben zusätzliche Entkopplungsmassen angeordnet.In addition to the extent of the thickness reduction or the remaining thickness in the thinned intermediate region in the thinned intermediate region and the distance between the printed circuit board sections and the corresponding width of the intermediate region, in a preferred development between printed circuit board sections at a predetermined distance from the printed circuit board sections and in a predetermined width and / or thickness remain local thick areas, which also influence the vibration characteristics and thus the decoupling of the printed circuit board sections from each other. Preferably, an additional decoupling mass can be arranged on the thick places within the intermediate area. On these thick places additional decoupling materials are arranged, for example by means of thick-layer application or soldering or gluing.
Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf Figuren näher erläutert, wobei funktional gleichartige Teile üblicherweise mit identischen Bezugszeichen versehen sind.The invention will be explained in more detail by means of embodiments with reference to figures, wherein functionally similar parts are usually provided with identical reference numerals.
Die
Der 1. Leiterplattenabschnitt
Zudem wird eine thermische Entkopplung des Leiterplattenabschnitts
Die Platzierung von Sensorelementen zur erwünschten Körperschallsensierung hingegen kann auf Leiterplattenabschnitt
Zudem kann der Flächenbedarf des Steuergeräts reduziert werden, indem bei gleicher Steuergerätegrundfläche durch Nutzung einer weiteren PCB-Fläche unter Anwendung einer 180° Biegung des gedünnten Leiterplattenbereichs ein weiterer Leiterplattenabschnitt parallel angeordnet wird.In addition, the space requirement of the control unit can be reduced by a further printed circuit board section is arranged in parallel with the same control unit base area by using a further PCB surface using a 180 ° bend of the thinned circuit board area.
Der 1. Leiterplattenabschnitt
Die äußere elektrische Kontaktierung des Steuergerät erfolgt über einen Steckerbereich
In dieser und den folgenden Figuren nicht mehr dargestellt, aber selbst verständlich natürlich vorhanden sind weitere elektrische oder elektronische Komponenten auf diesem 2. Leiterplattenabschnitt
Die Leiterplattenabschnitte
Die
Die
Die
Die
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- WO 2004/003571 A1 [0002] WO 2004/003571 A1 [0002]
- DE 2007011293 A1 [0002] DE 2007011293 A1 [0002]
- EP 1575344 B1 [0005] EP 1575344 B1 [0005]
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014216469.9A DE102014216469A1 (en) | 2014-08-20 | 2014-08-20 | Control unit for a motor vehicle having a first printed circuit board section with at least one sensor element and a second, mechanically decoupled from the first printed circuit board section |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014216469.9A DE102014216469A1 (en) | 2014-08-20 | 2014-08-20 | Control unit for a motor vehicle having a first printed circuit board section with at least one sensor element and a second, mechanically decoupled from the first printed circuit board section |
Publications (1)
Publication Number | Publication Date |
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DE102014216469A1 true DE102014216469A1 (en) | 2016-02-25 |
Family
ID=55273798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102014216469.9A Withdrawn DE102014216469A1 (en) | 2014-08-20 | 2014-08-20 | Control unit for a motor vehicle having a first printed circuit board section with at least one sensor element and a second, mechanically decoupled from the first printed circuit board section |
Country Status (1)
Country | Link |
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DE (1) | DE102014216469A1 (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004003571A1 (en) | 2002-06-28 | 2004-01-08 | Siemens Vdo Automotive Corporation | Assembling method and sensor assembly including stacked printed circuit boards with common attachment |
EP1575344B1 (en) | 2004-03-11 | 2007-05-30 | Siemens Aktiengesellschaft | Control device |
DE102007011293A1 (en) | 2007-03-08 | 2008-09-11 | Conti Temic Microelectronic Gmbh | Electronic module, has movement-sensitive sensors on circuit support, where circuit support has two sections which are formed by cutting it and sections are mechanically decoupled |
DE102008025938A1 (en) * | 2008-05-30 | 2009-12-03 | Continental Automotive Gmbh | Printed circuit board arrangement for control unit of internal combustion engine of motor vehicle, has plug connectors conductive coupled with related rigid regions and positioned adjacent to one another to form common plug connector unit |
DE102010062759A1 (en) * | 2010-12-09 | 2012-06-14 | Zf Friedrichshafen Ag | Printed circuit board arrangement e.g. high-density interconnect printed circuit board arrangement, for gear box control device of motor car, has two printed circuit boards extending adjacent to each other in common plane |
DE102013212265A1 (en) * | 2013-06-26 | 2014-12-31 | Zf Friedrichshafen Ag | Electronic unit and method for manufacturing an electronic unit |
DE102013216493A1 (en) * | 2013-08-20 | 2015-02-26 | Zf Friedrichshafen Ag | Printed circuit board having a first rigid circuit board portion and a second rigid circuit board portion and method of providing the circuit board |
DE102013018204A1 (en) * | 2013-10-30 | 2015-04-30 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Electronic assembly for a motor vehicle door handle with a flexible printed circuit board |
-
2014
- 2014-08-20 DE DE102014216469.9A patent/DE102014216469A1/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004003571A1 (en) | 2002-06-28 | 2004-01-08 | Siemens Vdo Automotive Corporation | Assembling method and sensor assembly including stacked printed circuit boards with common attachment |
EP1575344B1 (en) | 2004-03-11 | 2007-05-30 | Siemens Aktiengesellschaft | Control device |
DE102007011293A1 (en) | 2007-03-08 | 2008-09-11 | Conti Temic Microelectronic Gmbh | Electronic module, has movement-sensitive sensors on circuit support, where circuit support has two sections which are formed by cutting it and sections are mechanically decoupled |
DE102008025938A1 (en) * | 2008-05-30 | 2009-12-03 | Continental Automotive Gmbh | Printed circuit board arrangement for control unit of internal combustion engine of motor vehicle, has plug connectors conductive coupled with related rigid regions and positioned adjacent to one another to form common plug connector unit |
DE102010062759A1 (en) * | 2010-12-09 | 2012-06-14 | Zf Friedrichshafen Ag | Printed circuit board arrangement e.g. high-density interconnect printed circuit board arrangement, for gear box control device of motor car, has two printed circuit boards extending adjacent to each other in common plane |
DE102013212265A1 (en) * | 2013-06-26 | 2014-12-31 | Zf Friedrichshafen Ag | Electronic unit and method for manufacturing an electronic unit |
DE102013216493A1 (en) * | 2013-08-20 | 2015-02-26 | Zf Friedrichshafen Ag | Printed circuit board having a first rigid circuit board portion and a second rigid circuit board portion and method of providing the circuit board |
DE102013018204A1 (en) * | 2013-10-30 | 2015-04-30 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Electronic assembly for a motor vehicle door handle with a flexible printed circuit board |
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