EP1363268A2 - Sensor, insbesondere Ultraschallsensor, und Verfahren zur Herstellung - Google Patents
Sensor, insbesondere Ultraschallsensor, und Verfahren zur Herstellung Download PDFInfo
- Publication number
- EP1363268A2 EP1363268A2 EP03006213A EP03006213A EP1363268A2 EP 1363268 A2 EP1363268 A2 EP 1363268A2 EP 03006213 A EP03006213 A EP 03006213A EP 03006213 A EP03006213 A EP 03006213A EP 1363268 A2 EP1363268 A2 EP 1363268A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- housing parts
- housing
- welding
- welded
- 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- Withdrawn
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Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
- G10K9/22—Mountings; Casings
Definitions
- the invention relates to a sensor, in particular one Ultrasonic sensor one Motor vehicle environment detection system, with one out several housing parts assembled housing and with sensor components housed within the housing.
- the invention is based, sensors to provide a high level of functional reliability, a high durability and low manufacturing costs.
- the sensors are also said to be robust against environmental influences his.
- a particularly preferred embodiment of the invention has the advantage that the enclosed by the housing parts Sensor interior at least largely with a filling or Potting compound is filled.
- the sensor is preferably completely filled with filler or potting compound. By the filling or potting compound becomes an additional one Sealing effect generated, which the sensor components additionally protects against penetrating moisture.
- a filling or potting compound also has the Advantage that the sensor components are fixed in their position fixed and permanently preserved. This will The added effect is that the case looks like a one-piece vibrating body behaves. A Relative movement of the individual components of the sensor is due to their firm anchoring in the Filling or potting compound excluded. Such a achievable swinging ability contributes to a more uniform Emission characteristic of the sensor. The ability to vibrate depends primarily on the geometries of the housing parts and the sensor components, the materials used and the Filling or potting compound.
- a particularly advantageous, easy to assemble, moisture-proof and permanently functional sensor arises when the housing parts in the joined state welded together, especially laser welded, ultrasonic welded, friction welded, hot air welded or the like.
- the individual housing parts are preferably made of plastic and are made by welding moisture-proof joined together.
- the Housing parts integrally and possibly also are positively connected.
- cohesive Connect for example by gluing
- the Housing parts connected to each other in a moisture-tight manner become.
- It can be advantageous to relieve the adhesive spots be to add the housing parts additionally form-fitting. Mechanical ones that occur are advantageous Loads due to the positive locking of the housing parts intercepted and the glue points are relieved.
- a particularly advantageous sensor is obtained if only two housing parts to be joined together available. Such a component reduction has only one lying between the two housing parts Joining section to realize the moisture-proof is. Moisture in other places can therefore not in penetrate the sensor. Providing only two Housing parts also leads to a more uniform and thus better vibration behavior of the sensor.
- An advantageous embodiment of the invention stands out characterized in that at least two housing parts in the Area in which they are joined together, one at least largely circular or cylindrical Have cross-section.
- Such circular and / or cylindrical cross sections are particularly suitable, to be joined together moisture-tight.
- welding or gluing is on such cross sections advantageously possible.
- the sensor components can in particular be a cup-shaped membrane and connected to the membrane electronic components, preferably on a Printed circuit board are arranged include.
- the membrane and the electronic components as such can be separate manageable assemblies are preassembled and at Assembly of the sensor can be inserted into this.
- a housing part Housing part has tightly penetrating connector strands, which are connected to the electronic components.
- connector strands is a contacting of the sensor with, for example, a control unit or Evaluation unit possible without moisture in the Sensor can penetrate.
- the task mentioned at the outset is also supported by a Method for producing a sensor according to the invention solved, the housing parts by welding, especially by laser welding, ultrasonic welding, Friction welding, hot air welding or the like with each other be added.
- the mass is advantageously hot and has a low mass Viscosity on. As the mass cools down, the viscosity increases to the crowd.
- the potting or filling compound can be according to the invention also a foam, in particular a closed pore foam, act. The ability to vibrate of the sensor also depends crucially on this Material properties of the potting or Filling mass.
- a sensor 10 according to the invention is shown in the figure Exploded view shown.
- the sensor 10 is a Ultrasonic sensor for a vehicle environment detection system and is used, for example, in the bumpers of a vehicle assembled.
- the sensor 10 comprises two housing parts 12 and 14 made of plastic and arranged inside the sensor 10 Sensor components 16.
- the sensor components 16 comprise one Pot-shaped ultrasonic membrane 18, which via lines 20 with an electronic component 22 carrying circuit board 24 is connected. Furthermore, in the assembled state sleeve-like sealing or damping element 25 between the Membrane 18 and the housing part 12 are provided.
- a first assembly step in which the individual parts of the sensor 10 pushed into one another in the axial direction the mutually facing end faces of the Housing parts 12 and 14 flat against each other.
- the housing part 14 provides a ring section 38, which in the assembled Condition on the inside of the housing part 12 largely lies flat and form-fitting. This will make it radial intercepted acting forces.
- a second assembly step they become flat abutting or interlocking sections the housing parts 12 and 14 moisture-proof with each other connected.
- This can be done especially by welding, for example laser welding, ultrasonic welding, Friction welding, hot air welding or the like. And / or by cohesive joining, such as gluing, respectively. Because of such a moisture tight Connection of the two housing parts can no moisture penetrate into the sensor 10 from the outside.
- the Housing parts 12, 14 enclosed sensor interior completely filled with a filling or potting compound.
- a probe through one of the Housing parts 12 or 14 penetrates into the sensor 10 and the appropriate mass is injected into the sensor 10.
- the filling or potting compound has a relatively high Temperature and high viscosity. This will ensures that the sensor 10 or within the Housing parts 12 and 14 provided sensor components 16 completely embedded in the filling or potting compound become. It is achieved that the sensor components 16 permanently fixed in position and protected from environmental influences to be protected. The components 16 are also preserved.
- the sensor 10 is uniform Vibration behavior like a one-piece, uniform Has vibrating body. This has a positive effect on that Emission behavior of the sensor 10. Depending on the used Materials and intended geometries can Vibration ability of the sensor 10 can be influenced. The fact that the two housing parts 12 and 14 by the Join tightly and firmly connected, point they also have a uniform vibration behavior. Relative movements between the two housing parts 12 and 14 cannot occur.
- the sensor 10 consequently has the advantage that, on the one hand is moisture-proof. On the other hand, he points a uniform focus on the radiation retention of the Sensor positive impact, vibration behavior.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
Description
Claims (14)
- Sensor (10), insbesondere Ultraschallsensor eines Fahrzeugumfelderfassungssystems, mit einem aus mehreren Gehäuseteilen (12, 14) zusammengesetzten Gehäuse und mit innerhalb des Gehäuses untergebrachten Sensorbauteilen (16), dadurch gekennzeichnet, dass die Gehäuseteile (12, 14) feuchtigkeitsdicht miteinander gefügt sind.
- Sensor (10) nach Anspruch 1, dadurch gekennzeichnet, dass der von den Gehäuseteilen (12, 14) umschlossene Sensorinnenraum wenigstens weitgehend mit einer Füll- bzw. Vergussmasse ausgefüllt ist.
- Sensor (10) nach Anspruch 1 oder 2,dadurch gekennzeichnet, dass die Gehäuseteile (12, 14) im gefügten Zustand miteinander verschweißt sind, insbesondere lasergeschweißt, ultraschallgeschweißt, reibgeschweißt, heißluftgeschweißt, odgl. sind.
- Sensor (10) nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass die Gehäuseteile (12, 14) miteinander stoffschlüssig und ggf. auch formschlüssig verbunden sind.
- Sensor (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass lediglich zwei miteinander zu fügende Gehäuseteile (12, 14) vorhanden sind.
- Sensor (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens zwei Gehäuseteile (12, 14) in dem Bereich, in dem sie miteinander gefügt sind, einen wenigstens weitgehend kreisrunden und/oder zylindrischen Querschnitt aufweisen.
- Sensor (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gehäuseteile (12, 14) in dem Bereich, in dem sie miteinander gefügt sind, flächig aneinander stoßen und/oder flächig ineinander greifen.
- Sensor (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass an der Innenseite der Gehäuseteile (12, 14) Führungs- und/oder Halteabschnitte (26) für die Sensorbauteile (18, 24) vorgesehen sind.
- Sensor (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sensorbauteile (16) umfassen eine topfförmige Membrane (18) und mit der Membrane (18) verbundene elektronische Bauteile (22), die vorzugsweise auf einer Leiterplatine (24) angeordnet sind.
- Sensor (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens ein Gehäuseteil (14) das Gehäuseteil (14) dicht durchgreifende Steckerlitzen aufweist, die mit den elektronischen Bauteilen (22, 24) verbunden sind.
- Verfahren zur Herstellung eines Sensors (10) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Gehäuseteile (12, 14) durch Schweißen, insbesondere durch Laserschweißen, Ultraschallschweißen, Reibschweißen, Heißluftschweißen, odgl. miteinander gefügt werden.
- Verfahren zur Herstellung eines Sensors (10) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Gehäuseteile (12, 14) miteinander stoffschlüssig und ggf. auch formschlüssig verbunden werden.
- Verfahren nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass die Sensorbauteile (16) und die Gehäuseteile (12, 14) entlang einer Linie (40) bzw. von einer Richtung her miteinander montierbar bzw. fügbar sind.
- Verfahren nach Anspruch 11, 12, oder 13, dadurch gekennzeichnet, dass nach dem Fügen der Gehäuseteile (12, 14) Vergussmasse bzw. Füllmasse in den Sensor (10) eingespritzt wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10221303 | 2002-05-14 | ||
DE2002121303 DE10221303A1 (de) | 2002-05-14 | 2002-05-14 | Sensor, insbesondere Ultraschallsensor, und Verfahren zur Herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1363268A2 true EP1363268A2 (de) | 2003-11-19 |
EP1363268A3 EP1363268A3 (de) | 2008-10-15 |
Family
ID=29265267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03006213A Withdrawn EP1363268A3 (de) | 2002-05-14 | 2003-03-20 | Sensor, insbesondere Ultraschallsensor, und Verfahren zur Herstellung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1363268A3 (de) |
DE (1) | DE10221303A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102393216A (zh) * | 2011-08-02 | 2012-03-28 | 上官明禹 | 一种制造超声波传感器的方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10340551A1 (de) * | 2003-09-01 | 2005-04-14 | Siemens Ag | Sensorkopf |
DE102004020858A1 (de) * | 2004-04-28 | 2005-11-24 | Siemens Ag | Sensoranordnung und Verfahren zum Herstellen einer Sensoranordnung |
DE102004054059B4 (de) * | 2004-11-05 | 2019-05-23 | Continental Automotive Gmbh | Sensoranordnung und Verfahren zum Herstellen einer Sensoranordnung |
DE102005032808A1 (de) * | 2004-12-13 | 2007-01-18 | Krohne Ag | Meßgerät |
DE102005002626A1 (de) * | 2005-01-12 | 2006-07-20 | Valeo Schalter Und Sensoren Gmbh | Sensor für ein Nahbereichserkennungs- beziehungsweise Einparkhilfesystem eines Fahrzeugs und Kontaktdraht hierfür |
DE102005009620A1 (de) | 2005-02-23 | 2006-08-31 | Valeo Schalter Und Sensoren Gmbh | Ultraschallsensor |
ITMO20110053A1 (it) | 2011-03-07 | 2012-09-08 | Meta System Spa | Procedimento per la realizzazione di un dispositivo sensore, in particolare di un dispositivo sensore impiegabile in sistemi di assistenza al parcheggio per veicoli |
DE102013223912A1 (de) | 2013-11-22 | 2015-05-28 | Zf Friedrichshafen Ag | Sensorvorrichtung und Verfahren zum Herstellen einer Sensorvorrichtung |
DE102013022063A1 (de) | 2013-12-23 | 2015-06-25 | Valeo Schalter Und Sensoren Gmbh | Verfahren zum Herstellen eines Ultraschallsensors für ein Kraftfahrzeug |
DE102018102784B4 (de) | 2018-02-08 | 2023-09-21 | Valeo Schalter Und Sensoren Gmbh | Verfahren und Vorrichtung zum Verbinden zweier Bauteile, sowie deren Verwendung |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0837342A1 (de) * | 1996-10-15 | 1998-04-22 | Denso Corporation | Ultraschall- und Hindernisdetektor, der Hindernisse sicher erkennen kann |
DE19835782A1 (de) * | 1997-08-23 | 1999-04-01 | Itt Mfg Enterprises Inc | Ultrschallwandler mit in Wandlerlängsrichtung angeordneter Platine für eine elektrische Schaltung |
DE19752921A1 (de) * | 1997-11-28 | 1999-06-02 | Bosch Gmbh Robert | Ultraschallsensor |
WO2000050853A1 (en) * | 1999-02-26 | 2000-08-31 | M & Fc Holding Company | Transducer configurations and related method |
DE19939747A1 (de) * | 1999-08-21 | 2001-03-01 | Valeo Schalter & Sensoren Gmbh | Befestigungseinrichtung zur Befestigung von Ultraschallwandlern an Fahrzeugen |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0159169A3 (de) * | 1984-04-09 | 1987-07-01 | Toyota Jidosha Kabushiki Kaisha | Verfahren zum Verbinden verschiedenartiger synthetischer Harze |
IT214347Z2 (it) * | 1988-03-31 | 1990-05-03 | Veglia Borletti Srl | Trasduttore di tipo perfezionato |
DE3827937A1 (de) * | 1988-08-12 | 1990-02-15 | Siemens Ag | Elektrischer messwertaufnehmer |
DE4003656A1 (de) * | 1990-02-07 | 1991-08-08 | Guenther W Gmbh | Gehaeuse-bausatz fuer elektromechanische oder elektronische sensoren |
NO911774D0 (no) * | 1991-05-06 | 1991-05-06 | Sensonor As | Anordning ved innkapsling av et funksjonsorgan, samt fremgangsmaate for fremstilling av samme. |
DE4305439C2 (de) * | 1993-02-23 | 1999-10-21 | Eldo Elektronik Service Gmbh | Umkapselung für einen elektronischen Sensor zur Feldstärkemessung |
DE4311963C2 (de) * | 1993-04-10 | 1996-10-24 | Endress Hauser Gmbh Co | Füllstandsmeßgerät |
DE4340177A1 (de) * | 1993-11-25 | 1995-06-01 | Mannesmann Kienzle Gmbh | Meßwertgeber |
DE4405438C2 (de) * | 1994-02-21 | 2002-02-07 | Mannesmann Vdo Ag | Drehzahlgeber |
EP0751865B2 (de) * | 1994-03-31 | 2004-07-14 | Marquardt GmbH | Werkstück aus kunststoff und herstellungsverfahren für ein derartiges werkstück |
JPH0821775A (ja) * | 1994-07-08 | 1996-01-23 | Fuji Koki Seisakusho:Kk | 圧力センサ |
DE4426812A1 (de) * | 1994-07-28 | 1996-02-08 | Siemens Ag | Wasserdichtes Gehäuse mit Steckverbindung zum Schutz von Elektronikschaltkreisen |
DE19504608C2 (de) * | 1995-02-11 | 2002-03-21 | Balluff Gebhard Feinmech | Positionssensor und Verfahren zur Herstellung desselben |
DE19601987A1 (de) * | 1996-01-20 | 1997-07-24 | Teves Gmbh Alfred | Überlackierbarer Stoßfänger mit Ultraschallwandler |
DE19610167C1 (de) * | 1996-03-15 | 1997-02-13 | Elbagu Mes Und Regelungstechni | Meßgerät zur Ermittlung von Zustandsgrößen eines flüssigen Mediums |
DE29916221U1 (de) * | 1999-09-15 | 1999-12-30 | A B Elektronik Gmbh | Kurbelwellengeber |
DE10014992C2 (de) * | 2000-03-25 | 2002-01-31 | Bosch Gmbh Robert | Sensoranordnung |
-
2002
- 2002-05-14 DE DE2002121303 patent/DE10221303A1/de not_active Withdrawn
-
2003
- 2003-03-20 EP EP03006213A patent/EP1363268A3/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0837342A1 (de) * | 1996-10-15 | 1998-04-22 | Denso Corporation | Ultraschall- und Hindernisdetektor, der Hindernisse sicher erkennen kann |
DE19835782A1 (de) * | 1997-08-23 | 1999-04-01 | Itt Mfg Enterprises Inc | Ultrschallwandler mit in Wandlerlängsrichtung angeordneter Platine für eine elektrische Schaltung |
DE19752921A1 (de) * | 1997-11-28 | 1999-06-02 | Bosch Gmbh Robert | Ultraschallsensor |
WO2000050853A1 (en) * | 1999-02-26 | 2000-08-31 | M & Fc Holding Company | Transducer configurations and related method |
DE19939747A1 (de) * | 1999-08-21 | 2001-03-01 | Valeo Schalter & Sensoren Gmbh | Befestigungseinrichtung zur Befestigung von Ultraschallwandlern an Fahrzeugen |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102393216A (zh) * | 2011-08-02 | 2012-03-28 | 上官明禹 | 一种制造超声波传感器的方法 |
Also Published As
Publication number | Publication date |
---|---|
DE10221303A1 (de) | 2003-11-27 |
EP1363268A3 (de) | 2008-10-15 |
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