EP1654726B1 - Sensor for a short-range detection system and/or parking system of a motor vehicle and method for the production thereof - Google Patents
Sensor for a short-range detection system and/or parking system of a motor vehicle and method for the production thereof Download PDFInfo
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- EP1654726B1 EP1654726B1 EP04733252A EP04733252A EP1654726B1 EP 1654726 B1 EP1654726 B1 EP 1654726B1 EP 04733252 A EP04733252 A EP 04733252A EP 04733252 A EP04733252 A EP 04733252A EP 1654726 B1 EP1654726 B1 EP 1654726B1
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- Prior art keywords
- sensor
- housing
- coating
- powder coating
- powder
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 238000001514 detection method Methods 0.000 title claims abstract description 4
- 238000000034 method Methods 0.000 title abstract description 3
- 239000011248 coating agent Substances 0.000 claims abstract description 52
- 238000000576 coating method Methods 0.000 claims abstract description 52
- 239000000843 powder Substances 0.000 claims abstract description 45
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 238000002604 ultrasonography Methods 0.000 claims abstract 2
- 239000007769 metal material Substances 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 230000002411 adverse Effects 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- CSPPKDPQLUUTND-NBVRZTHBSA-N Sethoxydim Chemical compound CCO\N=C(/CCC)C1=C(O)CC(CC(C)SCC)CC1=O CSPPKDPQLUUTND-NBVRZTHBSA-N 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- MCVPMHDADNVRKF-UHFFFAOYSA-N nabitan Chemical compound C=12C(CN(CC#C)CC3)=C3C(C)(C)OC2=CC(C(C)C(C)CCCCC)=CC=1OC(=O)CCCN1CCCCC1 MCVPMHDADNVRKF-UHFFFAOYSA-N 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Images
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
- 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
-
- 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
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
Definitions
- the invention relates to a sensor for a Nah Schlerkennungs- or Einpark Anlagensystem a vehicle, in particular an ultrasonic sensor, with a pot-like housing whose bottom is designed as a vibrating diaphragm, wherein the housing has a coating on at least the outside.
- Such sensors are known in many ways.
- the sensors send out signals that are reflected by objects in the immediate vicinity of the vehicle and are received by the sensors again. Due to the differences between the transmitted and received signals, conclusions can be drawn about objects in the immediate vicinity of the vehicle. DE 100 07 050 discloses such sensors.
- Known sensors are either coated with anodized or cathodic dip coating (KTL).
- KTL cathodic dip coating
- a black anodized coating has proven to be advantageous if the sensors are to be installed in the color black on the vehicle. If the sensors are to be painted in the body color, then a KTL coating has proved to be advantageous as a primer for the respective paint.
- a KTL coating is not weather-resistant and must therefore be painted over. Installation of the sensor with a KTL coating in the uncoated state is therefore not possible.
- the coating of the sensors is problematic because it does not affect the mechanical vibration characteristics of the membrane may negatively influence. Influencing the vibration properties leads to incorrect, and therefore unusable measured values.
- the present invention has for its object to provide a sensor of the type described above, which has a suitable coating that does not adversely affect the vibration characteristics of the membrane.
- the coating should be such that the sensor can be installed without an additional paint job.
- the coating should be weatherproof.
- a sensor of the type mentioned above such that the coating is a weather-resistant, overcoatable and the vibration behavior of the membrane is not or only slightly negatively affecting powder coating.
- a powder coating does not adversely affect the vibration behavior of the membrane in such a way that a measurement is not possible.
- An only insignificantly negative impairment of the powder coating is present if the coating indeed attenuates or impairs the emission or reception behavior of the sensor, the sensor nevertheless being suitable for a proximity detection or parking aid system.
- a weakening of the reception and / or transmission behavior of the diaphragm can be compensated, for example, by a change in the sensitivity of the sensor.
- a powder coating has the advantage that it is weather-resistant and that it is paintable. Sensors with powder-coated housings can consequently be painted or unpainted on the vehicle.
- the powder coating is black, since black housings of sensors on the vehicle do not attract attention. If the sensors are to be provided in body color, the housings can be painted accordingly.
- an advantageous embodiment of the invention provides that the housing is made of a metallic material and that the powder coating is located directly on the metallic material. Consequently, no further layer is present between the material and the powder coating, such as, for example, an anodized coating or a cathodic dip coating. Precisely because the powder coating is provided directly on the metallic material, the vibration behavior of the membrane, if at all, is affected only comparatively small.
- an intermediate layer is located between the metallic material and the powder coating.
- Such an intermediate layer can be applied for example in the pretreatment of the metallic material and be several micrometers thick.
- aluminum or one is provided as the metallic material.
- Aluminum, or an aluminum alloy has, in particular in conjunction with a powder coating, a particularly advantageous vibration behavior.
- a corresponding agent can be used for the pretreatment of the aluminum.
- a phosphoric acid pickling solution has proven to be suitable, for example with NABADUR (STI / 156) from NABU overseentechnik GmbH, in D-92507 Nabburg.
- the aluminum should also undergo a chromium-free pretreatment, for example with NABUTAN (STI / 310) from NABU overseentechnik GmbH, in D-92507 Nabburg.
- NABUTAN chromium-free pretreatment
- a preferred embodiment of the invention provides that the powder coating of an acrylic powder, a Polyester powder and / or made of an epoxy powder.
- An acrylic powder coating has proven to be particularly advantageous which is sold under the trade name ALESTA (AC3004-4905122 / AC3S20-9051) by DuPont Pulverlack GmbH & Co. KG, D-84051 Essenbach-Altheim.
- the powder coating can be at least partially overpainted in the vehicle color.
- the painting can be carried out before mounting the sensors or after assembly, together with the vehicle or the corresponding housing part.
- the invention also relates to a housing for a sensor according to the invention, which has a powder coating.
- the object mentioned in the introduction is also achieved by a method for producing a sensor according to the invention as claimed in claim 8.
- the material in particular aluminum, is coated with the corresponding powder by means of electrostatic charging (EPS).
- EPS electrostatic charging
- the powder is then baked in an oven at temperatures of about 180 ° to 220 ° object temperature and runs in this process to a powder coating. Once the parts have cooled down, they can either be installed directly or painted with another coating.
- Powder coating has the advantage that it offers high mechanical resistance and optimum corrosion protection. Nevertheless, the vibration behavior on membranes is not adversely affected.
- the housing 10 of a sensor 12 is shown in longitudinal section.
- the housing 10 is pot-shaped and has a bottom 14.
- the bottom 14 forms a vibratable membrane, which can be set by a disposed on the inside of the bottom 14 Piezo unit 16 in vibration.
- the piezoelectric unit 16 is driven by an electronics, which is housed in the pot-shaped housing and is not shown in the figure.
- a powder coating 18 is provided, which is represented by the dashed line 20.
- the outside of the housing 10 of the sensor 12 does not have to be completely powder-coated. It is crucial that the weather-exposed areas, in particular the bottom 14, a powder coating 18 has.
- the powder coating 18 is in particular an acrylic powder coating. Particularly advantageous is a coating with the trade name ALESTA DuPont has been found. Hiss the material of the housing 12, which may be in particular aluminum or an aluminum alloy, and the powder coating 18 may be provided an aluminum protective or pretreating intermediate layer.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
Abstract
Description
Die Erfindung betrifft einen Sensor für ein Nahbereicherkennungs- bzw. Einparkhilfesystem eines Fahrzeuges, insbesondere einen Ultraschallsensor, mit einem topfartigen Gehäuse, dessen Boden als schwingungsfähige Membran ausgebildet ist, wobei das Gehäuse auf wenigstens der Außenseite eine Beschichtung aufweist. Derartige Sensoren sind in vielfältiger Art und Weise bekannt.The invention relates to a sensor for a Nahbereicherkennungs- or Einparkhilfesystem a vehicle, in particular an ultrasonic sensor, with a pot-like housing whose bottom is designed as a vibrating diaphragm, wherein the housing has a coating on at least the outside. Such sensors are known in many ways.
Mit den Sensoren werden Signale ausgesendet, die an Objekten im Nahbereich des Fahrzeugs reflektiert werden und von den Sensoren wieder empfangen werden. Aufgrund den Unterschieden der gesendeten und empfangenen Signale lassen sich Rückschlüsse auf Gegenstände im Nahbereich des Fahrzeugs ziehen.
Bekannte Sensoren werden entweder mit Eloxal oder werden mittels kathodischer Tauchlackierung (KTL) beschichtet. Eine schwarze Eloxalbeschichtung hat sich dann als vorteilhaft erwiesen, wenn die Sensoren in der Farbe schwarz am Fahrzeug verbaut werden sollen. Sollen die Sensoren in der Wagenfarbe lackiert werden, so hat sich eine KTL-Beschichtung als Haftvermittler für den jeweiligen Lack als vorteilhaft erwiesen. Eine KTL-Beschichtung ist allerdings nicht witterungsbeständig und muss deshalb überlackiert werden. Ein Verbauen des Sensors mit einer KTL-Beschichtung im nichtlackierten Zustand ist deshalb nicht möglich. Die Beschichtung der Sensoren ist deshalb problematisch, weil sie die mechanischen Schwingungseigenschaften der Membrane nicht negativ beeinflussen darf. Eine Beeinflussung der Schwingungseigenschaften führt zu falschen, und damit unbrauchbaren Messwerten.Known sensors are either coated with anodized or cathodic dip coating (KTL). A black anodized coating has proven to be advantageous if the sensors are to be installed in the color black on the vehicle. If the sensors are to be painted in the body color, then a KTL coating has proved to be advantageous as a primer for the respective paint. However, a KTL coating is not weather-resistant and must therefore be painted over. Installation of the sensor with a KTL coating in the uncoated state is therefore not possible. The coating of the sensors is problematic because it does not affect the mechanical vibration characteristics of the membrane may negatively influence. Influencing the vibration properties leads to incorrect, and therefore unusable measured values.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Sensor der eingangs beschriebenen Art bereitzustellen, der eine geeignete Beschichtung aufweist, die die Schwingungseigenschaften der Membrane nicht negativ beeinflusst. Außerdem soll die Beschichtung derart sein, dass der Sensor ohne eine zusätzliche Lackierung verbaut werden kann. Die Beschichtung soll witterungsbeständig sein.The present invention has for its object to provide a sensor of the type described above, which has a suitable coating that does not adversely affect the vibration characteristics of the membrane. In addition, the coating should be such that the sensor can be installed without an additional paint job. The coating should be weatherproof.
Diese Aufgabe wird durch einen Sensor der eingangs genannten Art derart gelöst, dass die Beschichtung eine witterungsbeständige, überlackierbare und das Schwingungsverhalten der Membrane nicht oder nur unwesentlich negativ beeinträchtigende Pulverbeschichtung ist. Überraschenderweise hat sich gezeigt, dass eine Pulverbeschichtung das Schwingungsverhalten der Membrane nicht derart negativ beeinflusst, dass eine Messung nicht möglich ist. Eine nur unwesentlich negative Beeinträchtigung der Pulverbeschichtung liegt dann vor, wenn die Beschichtung das Abstrahl- bzw. Empfangsverhalten des Sensors zwar abschwächt oder beeinträchtigt, wobei der Sensor dennoch für ein Nahbereicherkennungs- bzw. Einparkhilfesystem geeignet ist. Eine Abschwächung des Empfangs- und/oder Sendeverhaltens der Membrane kann beispielsweise durch eine Veränderung der Empfindlichkeit des Sensors kompensiert werden. Gerade eine Pulverbeschichtung hat den Vorteil, dass sie witterungsbeständig ist und dass sie lackierbar ist. Sensoren mit Pulverbeschichteten Gehäusen können folglich lackiert oder unlackiert am Fahrzeug verbaut sein. Insbesondere ist vorteilhaft, wenn die Pulverbeschichtung schwarz ist, da schwarze Gehäuse von Sensoren am Fahrzeug nicht negativ auffallen. Sollen die Sensoren in Wagenfarbe bereit gestellt werden, können die Gehäuse entsprechend lackiert werden.This object is achieved by a sensor of the type mentioned above such that the coating is a weather-resistant, overcoatable and the vibration behavior of the membrane is not or only slightly negatively affecting powder coating. Surprisingly, it has been shown that a powder coating does not adversely affect the vibration behavior of the membrane in such a way that a measurement is not possible. An only insignificantly negative impairment of the powder coating is present if the coating indeed attenuates or impairs the emission or reception behavior of the sensor, the sensor nevertheless being suitable for a proximity detection or parking aid system. A weakening of the reception and / or transmission behavior of the diaphragm can be compensated, for example, by a change in the sensitivity of the sensor. Especially a powder coating has the advantage that it is weather-resistant and that it is paintable. Sensors with powder-coated housings can consequently be painted or unpainted on the vehicle. In particular, it is advantageous if the powder coating is black, since black housings of sensors on the vehicle do not attract attention. If the sensors are to be provided in body color, the housings can be painted accordingly.
Eine vorteilhafte Ausführungsform der Erfindung sieht vor, dass das Gehäuse aus einem metallischen Werkstoff ist und dass sich die Pulverbeschichtung unmittelbar auf dem metallischen Werkstoff befindet. Zwischen dem Werkstoff und der Pulverbeschichtung ist folglich keine weitere Schicht vorhanden, wie beispielsweise eine Eloxalschicht oder eine KTL-Beschichtung. Gerade dadurch, dass die Pulverbeschichtung unmittelbar auf dem metallischen Werkstoff vorgesehen ist, wird das Schwingungsverhalten der Membrane, wenn überhaupt, nur vergleichsweise gering beeinträchtigt.An advantageous embodiment of the invention provides that the housing is made of a metallic material and that the powder coating is located directly on the metallic material. Consequently, no further layer is present between the material and the powder coating, such as, for example, an anodized coating or a cathodic dip coating. Precisely because the powder coating is provided directly on the metallic material, the vibration behavior of the membrane, if at all, is affected only comparatively small.
Erfindungsgemäß ist allerdings auch denkbar, dass sich zwischen dem metallischen Werkstoff und der Pulverbeschichtung eine Zwischenschicht befindet. Eine derartige Zwischenschicht kann beispielsweise bei der Vorbehandlung des metallischen Werkstoffs aufgetragen werden und mehrere Mikrometer dick sein.According to the invention, however, it is also conceivable that an intermediate layer is located between the metallic material and the powder coating. Such an intermediate layer can be applied for example in the pretreatment of the metallic material and be several micrometers thick.
Vorteilhafter Weise ist als metallischer Werkstoff Aluminium oder eine vorgesehen. Aluminium, bzw. eine Aluminiumlegierung hat, insbesondere in Verbindung mit einer Pulverbeschichtung, ein besonders vorteilhaftes Schwingungsverhalten. Hierbei kann zur Vorbehandlung des Aluminiums ein entsprechendes Mittel verwendet werden. Als geeignet hat sich zunächst eine phosphorsaure Beizentfeffung erwiesen, beispielsweise mit NABADUR (STI/156) der Firma NABU-Oberflächentechnik GmbH, in D-92507 Nabburg. Das Aluminium sollte außerdem eine Chromfreie Vorbehandlung erfahren, beispielsweise mit NABUTAN (STI/310) der Firma NABU-Oberflächentechnik GmbH, in D-92507 Nabburg. Zwischen der dem metallischen Werkstoff und der Pulverbeschichtung befindet sich dann eine dünne Zwischenschicht aus NABUTAN.Advantageously, aluminum or one is provided as the metallic material. Aluminum, or an aluminum alloy has, in particular in conjunction with a powder coating, a particularly advantageous vibration behavior. In this case, a corresponding agent can be used for the pretreatment of the aluminum. At first, a phosphoric acid pickling solution has proven to be suitable, for example with NABADUR (STI / 156) from NABU Oberflächentechnik GmbH, in D-92507 Nabburg. The aluminum should also undergo a chromium-free pretreatment, for example with NABUTAN (STI / 310) from NABU Oberflächentechnik GmbH, in D-92507 Nabburg. Between the metallic material and the powder coating is then a thin intermediate layer of NABUTAN.
Eine bevorzugte Ausführungsform der Erfindung sieht vor, dass die Pulverbeschichtung aus einem Acrylpulver, einem Polyesterpulver und/oder aus einem Epoxidpulver hergestellt ist. Besonders vorteilhaft hat sich ein Acrylpulverlack erwiesen, der unter dem Handelsname ALESTA (AC3004-4905122 / AC3S20-9051) von der Firma DuPont Pulverlack Deutschland GmbH & Co. KG, D-84051 Essenbach-Altheim, vertrieben wird.A preferred embodiment of the invention provides that the powder coating of an acrylic powder, a Polyester powder and / or made of an epoxy powder. An acrylic powder coating has proven to be particularly advantageous which is sold under the trade name ALESTA (AC3004-4905122 / AC3S20-9051) by DuPont Pulverlack Deutschland GmbH & Co. KG, D-84051 Essenbach-Altheim.
Bei Sensoren, die in lackierte Stoßfänger eingebaut werden, kann die Pulverbeschichtung wenigstens abschnittsweise in der Fahrzeugfarbe überlackiert sein. Die Lackierung kann vor der Montage der Sensoren oder nach der Montage, zusammen mit dem Fahrzeug bzw. dem entsprechenden Gehäuseteil, erfolgen.For sensors that are installed in painted bumpers, the powder coating can be at least partially overpainted in the vehicle color. The painting can be carried out before mounting the sensors or after assembly, together with the vehicle or the corresponding housing part.
Die Erfindung betrifft außerdem ein Gehäuse für einen erfindungsgemäßen Sensor, das eine Pulverbeschichtung aufweist.The invention also relates to a housing for a sensor according to the invention, which has a powder coating.
Die eingangs genannte Aufgabe wird außerdem gelöst durch ein Verfahren zur Herstellung eines erfindungsgemäßen Sensors gemäß Anspruch 8. Bei der Pulverbeschichtung wird der Werkstoff, insbesondere Aluminium, mit dem entsprechenden Pulver mit Hilfe elektrostatischer Aufladung (EPS) beschichtet. Anschließend wird das Pulver in einem Ofen bei Temperaturen von ca. 180° bis 220° Objekttemperatur eingebrannt und verläuft bei diesem Prozess zu einer Pulverbeschichtung. Sobald die Teile abgekühlt sind, können Sie entweder direkt verbaut werden oder mittels einer weiteren Beschichtung lackiert werden.The object mentioned in the introduction is also achieved by a method for producing a sensor according to the invention as claimed in claim 8. In powder coating, the material, in particular aluminum, is coated with the corresponding powder by means of electrostatic charging (EPS). The powder is then baked in an oven at temperatures of about 180 ° to 220 ° object temperature and runs in this process to a powder coating. Once the parts have cooled down, they can either be installed directly or painted with another coating.
Eine Pulverbeschichtung hat den Vorteil, dass sie eine hohe mechanische Beständigkeit und einen optimalen Korrosionsschutz bietet. Dennoch wird das Schwingverhalten an Membranen nicht negativ beeinflusst.Powder coating has the advantage that it offers high mechanical resistance and optimum corrosion protection. Nevertheless, the vibration behavior on membranes is not adversely affected.
Weitere Einzelheiten und vorteilhafte Ausgestaltungen der Erfindung sind der folgenden Beschreibung zu entnehmen, in der die Erfindung anhand des in der Zeichnung dargestellten Ausführungsbeispiels näher beschrieben und erläutert ist.Further details and advantageous embodiments of Invention will be apparent from the following description in which the invention with reference to the embodiment shown in the drawing is described and explained.
In der Figur ist das Gehäuse 10 eines erfindungsgemäßen Sensors 12 im Längsschnitt dargestellt. Das Gehäuse 10 ist topfartig ausgebildet und weist einen Boden 14 auf. Der Boden 14 bildet eine schwingfähige Membrane, die von einer auf der Innenseite des Bodens 14 angeordneten Piezoeinheit 16 in Schwingungen versetzt werden kann. Die Piezoeinheit 16 wird dabei von einer Elektronik angesteuert, die im topfförmigen Gehäuse untergebracht ist und in der Figur-nicht dargestellt ist. Auf der Außenseite des Gehäuses 10 ist eine Pulverbeschichtung 18 vorgesehen, die durch die gestrichelte Linie 20 dargestellt wird. Um das Gehäuse der Wagenfarbe anzupassen, kann sich auf der Pulverbeschichtung 18 eine weitere Lackschicht befinden. Die Außenseite des Gehäuses 10 des Sensors 12 muss nicht vollständig pulverbeschichtet sein. Entscheidend ist, dass die der Witterung ausgesetzten Bereiche, insbesondere der Boden 14, eine Pulverbeschichtung 18 aufweist.In the figure, the
Die Pulverbeschichtung 18 ist insbesondere eine Acrylpulverbeschichtung. Als besonders vorteilhaft hat sich eine Beschichtung mit dem Handelsnahmen ALESTA der Firma DuPont herausgestellt. Zischen dem Material des Gehäuses 12, welches insbesondere Aluminium oder eine Aluminiumlegierung sein kann, und der Pulverbeschichtung 18 kann eine das Aluminium schützende oder vorbehandelnde Zwischenschicht vorgesehen sein.The
Alle in der Beschreibung, den nachfolgenden Ansprüchen und in der Zeichnung dargestellten Merkmale können sowohl einzeln, als auch in beliebiger Kombination miteinander erfindungswesentlich sein.All features described in the description, the following claims and in the drawing can be essential to the invention both individually and in any combination with one another.
Claims (10)
- Sensor (12) for a short-range detection system and/or parking system of a vehicle, especially an ultrasound sensor, with a pot-like housing (10), the base (14) of which is formed as an oscillating membrane and the housing having a coating on at least the outer side, characterized in that the coating is a powder coating (18) which is weatherproof, paintable and has no or no significant adverse influence on the oscillating behaviour of the membrane.
- Sensor (12) according to Claim 1, characterized in that the housing (10) is made of a metallic material and in that the powder coating (18) is directly on the metallic material.
- Sensor (12) according to Claim 1 or 2,
characterized in that the housing (10) is made of a metallic material and in that there is an intermediate layer between the metallic material and the powder coating (18). - Sensor (12) according to Claim 2 or 3,
characterized in that the metallic material is aluminium or an aluminium alloy. - Sensor (12) according to Claim 1, 2 or 3,
characterized in that the powder coating (18) is produced from an acrylic powder, a polyester powder and/or an epoxy powder. - Sensor (12) according to one of the preceding claims, characterized in that the powder coating (18) is of a dark colour and, in particular, a black colour.
- Sensor (12) according to one of the preceding claims, characterized in that the powder coating (18) is at least partially painted.
- Method for producing a sensor according to one of Claims 1 to 6, providing a pot-like housing (10), the base (14) of which is formed as an oscillating membrane, and the housing having a coating on at least the outer side, characterized in that the housing (10) is powder-coated to produce the powder coating (18) which is weatherproof, paintable and has no or no significant adverse influence on the oscillating behaviour of the membrane.
- Method for producing a sensor according to Claim 8, characterized in that, after the powder coating, the housing (10) is painted or is fitted without any further treatment.
- Method for producing a sensor according to Claim 8 or 9, characterized in that, before the powder coating, the housing (10) is pre-treated, in particular by applying an intermediate layer.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE10337734 | 2003-08-11 | ||
DE20316835 | 2003-11-03 | ||
PCT/EP2004/005242 WO2005024451A2 (en) | 2003-08-11 | 2004-05-15 | Sensor for a short-range detection system and/or parking system of a motor vehicle and method for the production thereof |
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EP1654726A2 EP1654726A2 (en) | 2006-05-10 |
EP1654726B1 true EP1654726B1 (en) | 2010-04-28 |
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EP04733252A Expired - Lifetime EP1654726B1 (en) | 2003-08-11 | 2004-05-15 | Sensor for a short-range detection system and/or parking system of a motor vehicle and method for the production thereof |
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US (1) | US7551520B2 (en) |
EP (1) | EP1654726B1 (en) |
CN (1) | CN1836270B (en) |
AT (1) | ATE466360T1 (en) |
DE (1) | DE502004011108D1 (en) |
ES (1) | ES2344897T3 (en) |
WO (1) | WO2005024451A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010063442A1 (en) * | 2010-12-17 | 2012-06-21 | Robert Bosch Gmbh | Sound-wave-based sensor i.e. ultrasound sensor, for detecting objects in environment of motor car during parking process, has membrane for generating and/or detecting sound waves and comprising protecting layers that are made of polymer |
WO2021008849A1 (en) | 2019-07-12 | 2021-01-21 | Audi Ag | Visible components with functional coating |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102005045306A1 (en) * | 2005-09-16 | 2007-03-29 | Valeo Schalter Und Sensoren Gmbh | Method for producing an ultrasonic sensor and ultrasonic sensor |
DE102006041975A1 (en) * | 2006-09-07 | 2008-03-27 | Hella Kgaa Hueck & Co. | Ultrasonic sensor and method for producing an ultrasonic sensor |
DE102009002983A1 (en) * | 2009-05-11 | 2010-11-18 | Robert Bosch Gmbh | Membrane pot for an ultrasonic transducer and sensor with it |
DE102009034418A1 (en) | 2009-07-23 | 2011-01-27 | Valeo Schalter Und Sensoren Gmbh | Membrane and method for producing a membrane for an ultrasonic transducer |
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DE102010044994A1 (en) * | 2010-09-10 | 2012-03-15 | Valeo Schalter Und Sensoren Gmbh | Ultrasonic transducer installed in bumper of vehicle, for driver assistance device, has membrane in which anti-vibration soft paint coating is formed on outer side |
US9007196B2 (en) | 2011-12-14 | 2015-04-14 | Ford Global Technologies, Llc | Cost effective auto-actuation door check |
CN104567962A (en) * | 2014-12-26 | 2015-04-29 | 常州波速传感器有限公司 | Ultrasonic sensor with coating improved |
DE102015106044A1 (en) * | 2015-04-21 | 2016-10-27 | Valeo Schalter Und Sensoren Gmbh | Ultrasonic sensor for a motor vehicle made of highly filled plastic, driver assistance system, motor vehicle and method |
DE112020002662A5 (en) * | 2019-06-04 | 2022-03-10 | Tdk Electronics Ag | ULTRASONIC TRANSDUCER AND METHOD OF MAKING AN ULTRASONIC TRANSDUCER |
DE102019115032A1 (en) * | 2019-06-04 | 2020-12-10 | Tdk Electronics Ag | Ultrasonic transducer |
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2004
- 2004-05-15 CN CN2004800228807A patent/CN1836270B/en not_active Expired - Lifetime
- 2004-05-15 ES ES04733252T patent/ES2344897T3/en not_active Expired - Lifetime
- 2004-05-15 AT AT04733252T patent/ATE466360T1/en not_active IP Right Cessation
- 2004-05-15 DE DE502004011108T patent/DE502004011108D1/en not_active Expired - Lifetime
- 2004-05-15 US US10/567,493 patent/US7551520B2/en active Active
- 2004-05-15 WO PCT/EP2004/005242 patent/WO2005024451A2/en active Application Filing
- 2004-05-15 EP EP04733252A patent/EP1654726B1/en not_active Expired - Lifetime
Cited By (3)
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DE102010063442A1 (en) * | 2010-12-17 | 2012-06-21 | Robert Bosch Gmbh | Sound-wave-based sensor i.e. ultrasound sensor, for detecting objects in environment of motor car during parking process, has membrane for generating and/or detecting sound waves and comprising protecting layers that are made of polymer |
WO2021008849A1 (en) | 2019-07-12 | 2021-01-21 | Audi Ag | Visible components with functional coating |
US12027038B2 (en) | 2019-07-12 | 2024-07-02 | Audi Ag | Visible components with functional coating |
Also Published As
Publication number | Publication date |
---|---|
WO2005024451A2 (en) | 2005-03-17 |
CN1836270A (en) | 2006-09-20 |
WO2005024451A3 (en) | 2006-03-02 |
CN1836270B (en) | 2010-05-12 |
US20070017807A1 (en) | 2007-01-25 |
US7551520B2 (en) | 2009-06-23 |
ES2344897T3 (en) | 2010-09-09 |
DE502004011108D1 (en) | 2010-06-10 |
EP1654726A2 (en) | 2006-05-10 |
ATE466360T1 (en) | 2010-05-15 |
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