EP1654726B1 - Capteur destine a un systeme de detection de proximite ou d'aide au stationnement d'un vehicule et son procede de production - Google Patents
Capteur destine a un systeme de detection de proximite ou d'aide au stationnement d'un vehicule et son procede de production Download PDFInfo
- Publication number
- 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
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- housing
- coating
- powder coating
- powder
- 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.)
- Expired - Lifetime
Links
- 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
- 239000003795 chemical substances by application Substances 0.000 description 1
- 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
- 238000010422 painting Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Claims (10)
- Capteur (12) pour un système de détection de zone de proximité ou d'aide au stationnement d'un véhicule, notamment capteur à ultrasons, comprenant un boîtier (10) en forme de pot dont le fond (14) est réalisé sous la forme d'une membrane pouvant osciller, le boîtier présentant un revêtement au moins sur le côté extérieur, caractérisé en ce que le revêtement est un revêtement par poudre (18) résistant aux intempéries, vernissable et n'affectant pas ou seulement de manière négligeable la caractéristique oscillante de la membrane.
- Capteur (12) selon la revendication 1, caractérisé en ce que le boîtier (10) est composé d'un matériau métallique et que le revêtement par poudre (18) se trouve directement sur le matériau métallique.
- Capteur (12) selon la revendication 1 ou 2,
caractérisé en ce que le boîtier (10) est composé d'un matériau métallique et qu'une couche intermédiaire se trouve entre le matériau métallique et le revêtement par poudre (18). - Capteur (12) selon la revendication 2 ou 3,
caractérisé en ce que le matériau métallique est de l'aluminium ou un alliage d'aluminium. - Capteur (12) selon la revendication 1, 2 ou 3, caractérisé en ce que le revêtement par poudre (18) est fabriqué à partir d'une poudre d'acrylique, d'une poudre de polyester et/ou d'une poudre d'époxy.
- Capteur (12) selon l'une des revendications précédentes, caractérisé en ce que le revêtement par poudre (18) présente une couleur sombre et notamment une couleur noire.
- Capteur (12) selon l'une des revendications précédentes, caractérisé en ce que le revêtement par poudre (18) est vernis au moins sur certaines portions.
- Procédé de fabrication d'un capteur selon l'une des revendications 1 à 6, un boîtier (10) en forme de pot dont le fond (14) est réalisé sous la forme d'une membrane pouvant osciller étant fourni, le boîtier présentant un revêtement au moins sur le côté extérieur, caractérisé en ce que le boîtier (10) est revêtu de poudre pour réaliser le revêtement par poudre (18) résistant aux intempéries, vernissable et n'affectant pas ou seulement de manière négligeable la caractéristique oscillante de la membrane.
- Procédé de fabrication d'un capteur selon la revendication 8, caractérisé en ce qu'après le revêtement par poudre, le boîtier (10) est vernis ou assemblé sans autre traitement.
- Procédé de fabrication d'un capteur selon la revendication 8 ou 9, caractérisé en ce que le boîtier (10) est soumis à un traitement préalable avant le revêtement par poudre, notamment en appliquant une couche intermédiaire.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10337734 | 2003-08-11 | ||
DE20316835 | 2003-11-03 | ||
PCT/EP2004/005242 WO2005024451A2 (fr) | 2003-08-11 | 2004-05-15 | Capteur destine a un systeme de detection de proximite ou d'aide au stationnement d'un vehicule et son procede de production |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1654726A2 EP1654726A2 (fr) | 2006-05-10 |
EP1654726B1 true EP1654726B1 (fr) | 2010-04-28 |
Family
ID=34276509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04733252A Expired - Lifetime EP1654726B1 (fr) | 2003-08-11 | 2004-05-15 | Capteur destine a un systeme de detection de proximite ou d'aide au stationnement d'un vehicule et son procede de production |
Country Status (7)
Country | Link |
---|---|
US (1) | US7551520B2 (fr) |
EP (1) | EP1654726B1 (fr) |
CN (1) | CN1836270B (fr) |
AT (1) | ATE466360T1 (fr) |
DE (1) | DE502004011108D1 (fr) |
ES (1) | ES2344897T3 (fr) |
WO (1) | WO2005024451A2 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010063442A1 (de) * | 2010-12-17 | 2012-06-21 | Robert Bosch Gmbh | Schallwellenbasierter Sensor mit einer Schutzschicht zur Umfelddetektion und Verwendung desselben |
WO2021008849A1 (fr) | 2019-07-12 | 2021-01-21 | Audi Ag | Composant visible à revêtement fonctionnel |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1836270B (zh) * | 2003-08-11 | 2010-05-12 | 瓦莱奥开关传感器有限公司 | 用于车辆的传感器及其制造方法和传感器壳体 |
DE102005045306A1 (de) * | 2005-09-16 | 2007-03-29 | Valeo Schalter Und Sensoren Gmbh | Verfahren zur Herstellung eines Ultraschallsensors sowie Ultraschallsensor |
DE102006041975A1 (de) * | 2006-09-07 | 2008-03-27 | Hella Kgaa Hueck & Co. | Ultraschallsensor und Verfahren zur Herstellung eines Ultraschallsensors |
DE102009002983A1 (de) * | 2009-05-11 | 2010-11-18 | Robert Bosch Gmbh | Membrantopf für einen Ultraschallwandler und Sensor damit |
DE102009034418A1 (de) | 2009-07-23 | 2011-01-27 | Valeo Schalter Und Sensoren Gmbh | Membran und Verfahren zur Herstellung einer Membran für einen Ultraschallwandler |
US20130105670A1 (en) | 2010-07-02 | 2013-05-02 | Marko Borosak | Pulsed laser signal disrupting device incorporating led illuminator |
DE102010044994A1 (de) * | 2010-09-10 | 2012-03-15 | Valeo Schalter Und Sensoren Gmbh | Ultraschallwandler für eine Fahrerassistenzeinrichtung |
US9007196B2 (en) | 2011-12-14 | 2015-04-14 | Ford Global Technologies, Llc | Cost effective auto-actuation door check |
CN104567962A (zh) * | 2014-12-26 | 2015-04-29 | 常州波速传感器有限公司 | 一种改进涂装的超声波传感器 |
DE102015106044A1 (de) * | 2015-04-21 | 2016-10-27 | Valeo Schalter Und Sensoren Gmbh | Ultraschallsensor für ein Kraftfahrzeug aus hochgefülltem Kunststoff, Fahrerassistenzsystem, Kraftfahrzeug sowie Verfahren |
DE112020002662A5 (de) * | 2019-06-04 | 2022-03-10 | Tdk Electronics Ag | Ultraschall-wandler und verfahren zur herstellung eines ultraschall-wandlers |
DE102019115032A1 (de) * | 2019-06-04 | 2020-12-10 | Tdk Electronics Ag | Ultraschall-Wandler |
DE102020202544A1 (de) | 2020-02-27 | 2021-09-02 | Brose Fahrzeugteile Se & Co. Kommanditgesellschaft, Bamberg | Ultraschallsensor eines Kraftfahrzeugs |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3311519B2 (ja) * | 1994-10-25 | 2002-08-05 | ティーディーケイ株式会社 | 圧電サウンダ |
DE19744229A1 (de) | 1997-10-07 | 1999-04-29 | Bosch Gmbh Robert | Ultraschallwandler |
DE10023065B4 (de) | 2000-02-12 | 2006-03-02 | Volkswagen Ag | Ultraschallsensor für ein Kraftfahrzeug |
DE10007050A1 (de) * | 2000-02-17 | 2001-08-23 | Volkswagen Ag | Ultraschallsensor |
EP1202249A1 (fr) * | 2000-10-26 | 2002-05-02 | Imra Europe S.A. | Transducteur étanche pour une array à demi-longeur d'onde |
WO2002071002A1 (fr) | 2001-03-02 | 2002-09-12 | Spanner-Pollux Gmbh | Transducteur destine a un debitmetre ultrasonique |
DE10159679A1 (de) * | 2001-11-30 | 2003-06-12 | Valeo Schalter & Sensoren Gmbh | Ultraschallsensoreinheit und Verfahren zur Herstellung |
EP1308084A1 (fr) * | 2002-10-02 | 2003-05-07 | Ciba SC Holding AG | Combinaison UV-absorbante avec un effet synergistique |
CN1836270B (zh) * | 2003-08-11 | 2010-05-12 | 瓦莱奥开关传感器有限公司 | 用于车辆的传感器及其制造方法和传感器壳体 |
-
2004
- 2004-05-15 CN CN2004800228807A patent/CN1836270B/zh not_active Expired - Lifetime
- 2004-05-15 ES ES04733252T patent/ES2344897T3/es not_active Expired - Lifetime
- 2004-05-15 AT AT04733252T patent/ATE466360T1/de not_active IP Right Cessation
- 2004-05-15 DE DE502004011108T patent/DE502004011108D1/de 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/fr active Application Filing
- 2004-05-15 EP EP04733252A patent/EP1654726B1/fr not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010063442A1 (de) * | 2010-12-17 | 2012-06-21 | Robert Bosch Gmbh | Schallwellenbasierter Sensor mit einer Schutzschicht zur Umfelddetektion und Verwendung desselben |
WO2021008849A1 (fr) | 2019-07-12 | 2021-01-21 | Audi Ag | Composant visible à revêtement fonctionnel |
US12027038B2 (en) | 2019-07-12 | 2024-07-02 | Audi Ag | Visible components with functional coating |
Also Published As
Publication number | Publication date |
---|---|
WO2005024451A2 (fr) | 2005-03-17 |
CN1836270A (zh) | 2006-09-20 |
WO2005024451A3 (fr) | 2006-03-02 |
CN1836270B (zh) | 2010-05-12 |
US20070017807A1 (en) | 2007-01-25 |
US7551520B2 (en) | 2009-06-23 |
ES2344897T3 (es) | 2010-09-09 |
DE502004011108D1 (de) | 2010-06-10 |
EP1654726A2 (fr) | 2006-05-10 |
ATE466360T1 (de) | 2010-05-15 |
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