EP1064645B1 - Transducteur ultrasonore - Google Patents

Transducteur ultrasonore Download PDF

Info

Publication number
EP1064645B1
EP1064645B1 EP98959707A EP98959707A EP1064645B1 EP 1064645 B1 EP1064645 B1 EP 1064645B1 EP 98959707 A EP98959707 A EP 98959707A EP 98959707 A EP98959707 A EP 98959707A EP 1064645 B1 EP1064645 B1 EP 1064645B1
Authority
EP
European Patent Office
Prior art keywords
housing
ultrasonic converter
converter according
bowl
ring
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
Application number
EP98959707A
Other languages
German (de)
English (en)
Other versions
EP1064645A2 (fr
Inventor
Herbert Arnold
Dieter Karr
Meike Fehse
Peter Rapps
Waldemar Ernst
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1064645A2 publication Critical patent/EP1064645A2/fr
Application granted granted Critical
Publication of EP1064645B1 publication Critical patent/EP1064645B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Definitions

  • the invention is based on an ultrasonic transducer with a pot-like housing with an annular wall and a bottom surface as a membrane, with the On the inside of the bottom surface, a piezo element is applied, which has connection lines connected is.
  • An ultrasonic transducer is known from EP 0 075 302 B1, which has a cup-shaped housing having. Such ultrasonic transducers are used, for example, as sensors for Distance measuring devices used.
  • EP 477 575 A1 describes an ultrasonic transducer and a method for producing the Ultrasonic transducer is known, in which with the help of different shapes to one Piezoceramic disc a pourable matching material is arranged, which is a pot formed. The piezoceramic disc is contacted by wires that are connected by a poured damping material run and open into a connector. The In one embodiment, damping material forms a ring for holding.
  • DE 34 41 684 A1 describes an electroacoustic transducer with an aluminum pot and a piezoceramic disk arranged thereon, which is connected via flexible wires a circuit board is contacted. Is on a housing made of an elastic material arranged a connector that leads out of the housing. There is a on the aluminum pot Ring arranged for holding in the elastic material.
  • the object of the present invention is to provide an ultrasonic transducer stable contact for secure mounting.
  • the edge facing away from the bottom surface is surrounded by a decoupling ring and that the decoupling ring is designed as a holder for the connecting lines.
  • the annular wall of the pot-like housing has a contour that is rises above the outside of the annular wall of the pot-like housing, the decoupling ring on the outside corresponding to this contour Has contour for secure attachment of the ultrasonic transducer to an opening.
  • a first advantageous embodiment of the Ultrasonic transducer according to the invention is that the Decoupling ring essentially fills the housing and provided with holes to hold the connecting cables is.
  • the Decoupling ring has a central opening at the Edge grooves arranged to hold the connection lines are. It is advantageous if one of them is not Decoupling part of the interior of the Housing including the central opening with a Damping material is filled.
  • An advantageous embodiment of the invention Ultrasonic transducer is that the connecting lines are flexible.
  • the flexible Connection lines for example formed by strands is still an easy assembly of the Ultrasonic transducer according to the invention on a circuit board possible, the connecting cables through the bracket in the holes arranged in the respective grid dimension fit.
  • the connecting lines held in the decoupling ring rigidly formed and with flexible pipe sections with the Piezo element are connected.
  • this one Design provided that the decoupling ring except the Holes for holding the connection lines an opening and that the opening and one not of that Decoupling part of the interior of the Housing are filled with a damping material.
  • the figures show the exemplary embodiments in one view from the direction of radiation or Receiving direction (a) and a plan view of the Connection side (b) and each as a longitudinal section (c) or (d).
  • the illustrated embodiments each contain one, for example made of aluminum, Sensor transducer pot 1, on the bottom of which the piezo element 2 attached, for example glued.
  • a decoupling ring 4, 6, 9 made of elastic material, preferably made of silicone, provided the edge of the Converter pot 1 includes.
  • a corresponding contour of the transducer pot 1 and on the Outside of the decoupling ring 4, 6, 9 is used for secure attachment by simple Press into a corresponding opening of the body part, not shown.
  • connecting strands 3 with the piezo element 2 contacted.
  • the decoupling ring 4 comprises a central opening, at the edge of which grooves are provided for holding the connecting strands 3.
  • the remaining cavities are filled with a damping material 5, for example with a silicone foam.
  • the decoupling ring 6 is designed such that it occupies the entire interior of the sensor pot 1.
  • a bore running through the entire decoupling ring 6 is provided in each case.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Measuring Volume Flow (AREA)

Claims (10)

  1. Transducteur d'ultrasons, muni d'un boítier (1) en forme de creuset avec une paroi annulaire et une surface couverte comme membrane, pour lequel un élément piézoélectrique (2) est placé sur le côté intérieur de la surface couverte et est connecté à l'aide de lignes de raccordement (3, 7, 8), le bord du boítier en forme de creuset contourné par la surface couverte est entouré d'un anneau de découplage (4, 6, 9) et l'anneau de découplage (4, 6, 9) constitue le dispositif de fixation des lignes de raccordement (3, 8),
    caractérisé en ce que
    la paroi annulaire du boítier en forme de creuset (1) présente un contour qui se trouve au-dessus du côté extérieur de la paroi annulaire du boítier en forme de creuset (1), et l'anneau de découplage (4, 6, 9) présente, sur son côté extérieur, un contour correspondant à ce contour afin d'assurer une fixation sûre du transducteur d'ultrasons au niveau d'une ouverture.
  2. Transducteur d'ultrasons selon la revendication 1,
    caractérisé en ce que
    le boítier en forme de creuset est en aluminium.
  3. Transducteur d'ultrasons selon l'une des revendications précédentes,
    caractérisé en ce que
    l'anneau de découplage (6) du boítier (1) apporte essentiellement des satisfactions et est équipé de trous permettant de fixer les lignes de raccordement (3).
  4. Transducteur d'ultrasons selon l'une des revendications 1 ou 2,
    caractérisé en ce que
    l'anneau de découplage (4) présente une ouverture centrale sur le bord de laquelle des rainures sont creusées pour permettre de fixer les lignes de raccordement (3).
  5. Transducteur d'ultrasons selon la revendication 4,
    caractérisé en ce qu'
    une partie de l'espace intérieur du boítier en forme de creuset (1) non occupée par l'anneau de découplage (4), y compris l'ouverture centrale, est remplie d'un matériau d'atténuation (5).
  6. Transducteur d'ultrasons selon l'une des revendications précédentes,
    caractérisé en ce que
    les lignes de raccordement (3) sont flexibles.
  7. Transducteur d'ultrasons selon la revendication 1 ou 2,
    caractérisé en ce que
    les lignes de raccordement (8) contenues dans l'anneau de découplage (9) sont rigides et reliées à l'élément piézoélectrique (2) par l'intermédiaire de sections de lignes (7) flexibles.
  8. Transducteur d'ultrasons selon la revendication 7,
    caractérisé en ce que
    l'anneau de découplage (9) présente une ouverture en dehors des trous de fixation des lignes de raccordement (8), et cette ouverture ainsi qu'une partie de l'espace intérieur du boítier en forme de creuset (1), non occupée par l'anneau de découplage (9), sont remplies d'un matériau d'atténuation (11).
  9. Transducteur d'ultrasons selon l'une des revendications 7 ou 8,
    caractérisé en ce que
    les lignes de raccordement (8) rigides sont courbées de 90 ° à l'extérieur du boítier en forme de creuset (1).
  10. Transducteur d'ultrasons selon l'une des revendications précédentes,
    caractérisé en ce que
    les lignes de raccordement (8) comportent une nervure (10), de préférence ronde, à la surface de l'anneau de découplage (9).
EP98959707A 1997-10-07 1998-10-05 Transducteur ultrasonore Expired - Lifetime EP1064645B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19744229A DE19744229A1 (de) 1997-10-07 1997-10-07 Ultraschallwandler
DE19744229 1997-10-07
PCT/DE1998/002938 WO1999018563A2 (fr) 1997-10-07 1998-10-05 Transducteur ultrasonore

Publications (2)

Publication Number Publication Date
EP1064645A2 EP1064645A2 (fr) 2001-01-03
EP1064645B1 true EP1064645B1 (fr) 2003-09-24

Family

ID=7844817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98959707A Expired - Lifetime EP1064645B1 (fr) 1997-10-07 1998-10-05 Transducteur ultrasonore

Country Status (4)

Country Link
US (1) US6374676B1 (fr)
EP (1) EP1064645B1 (fr)
DE (2) DE19744229A1 (fr)
WO (1) WO1999018563A2 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19927797C1 (de) * 1999-06-18 2000-12-07 Fraunhofer Ges Forschung Ultraschallwandler und Verfahren zu seiner Herstellung
DE10106477C2 (de) * 2001-02-13 2002-12-19 Fraunhofer Ges Forschung Ultraschallwandler mit Gehäuse
EP1654726B1 (fr) 2003-08-11 2010-04-28 Valeo Schalter und Sensoren GmbH Capteur destine a un systeme de detection de proximite ou d'aide au stationnement d'un vehicule et son procede de production
DE10341422A1 (de) * 2003-09-09 2005-03-31 Sick Engineering Gmbh Ultraschallwandleranordnung
JP4306561B2 (ja) 2004-08-11 2009-08-05 株式会社デンソー 超音波センサ
DE102005039093A1 (de) * 2005-08-08 2007-02-15 Valeo Schalter Und Sensoren Gmbh Ultraschallsensor, Entkopplungsmaterial für einen Ultraschallsensor und Verfahren zur Lackierung eines Ultraschallsensors
CN101258772B (zh) * 2005-09-09 2012-04-25 株式会社村田制作所 超声波传感器
KR101239306B1 (ko) * 2006-02-14 2013-03-05 가부시키가이샤 무라타 세이사쿠쇼 초음파 센서 및 그 제조방법
KR101001766B1 (ko) 2006-02-14 2010-12-15 가부시키가이샤 무라타 세이사쿠쇼 초음파 센서
DE102006011155A1 (de) 2006-03-10 2007-09-13 Robert Bosch Gmbh Ultraschallsensor
DE102006028212A1 (de) * 2006-06-14 2007-12-20 Valeo Schalter Und Sensoren Gmbh Ultraschallsensor
DE102006040344B4 (de) * 2006-08-29 2022-09-29 Robert Bosch Gmbh Haltevorrichtung für einen Ultraschallwandler
DE102006050037A1 (de) * 2006-10-24 2008-04-30 Robert Bosch Gmbh Ultraschallwandler
DE102007043500A1 (de) * 2007-09-12 2009-03-19 Valeo Schalter Und Sensoren Gmbh Einbauanordnung für ein schwingungsempfindliches Bauteil, insbesondere eines Ultraschallwandlers, und Verfahren zum Einbau des Bauteils
US8129220B2 (en) 2009-08-24 2012-03-06 Hong Kong Polytechnic University Method and system for bonding electrical devices using an electrically conductive adhesive
DE102009040374A1 (de) * 2009-09-07 2011-03-17 Valeo Schalter Und Sensoren Gmbh Ultraschallwandler mit einem Entkopplungsring
DE102009046972A1 (de) * 2009-11-23 2011-05-26 Robert Bosch Gmbh Ultraschallsensor
JP5522100B2 (ja) * 2010-05-28 2014-06-18 株式会社村田製作所 超音波センサ
KR20120136653A (ko) * 2011-06-09 2012-12-20 삼성전기주식회사 초음파 센서
DE102011079646A1 (de) * 2011-07-22 2013-02-07 Robert Bosch Gmbh Ultraschallsensorvorrichtung zum Erfassen und/oder Senden von Ultraschall
US9518850B2 (en) 2012-09-28 2016-12-13 United Technologies Corporation Embedded cap probe
US10072963B1 (en) * 2014-07-11 2018-09-11 Nick V. Solokhin Ultrasonic volume-sensing transducer instrument with concave transceiver element
DE102015216200A1 (de) * 2015-08-25 2017-03-02 Robert Bosch Gmbh Akustischer Sensor mit einem Gehäuse und einem an diesem Gehäuse angeordneten Membranelement
US10330455B2 (en) 2016-09-19 2019-06-25 United Technologies Corporation Tri-axial capacitance probe with case integrated housing
JP6939429B2 (ja) 2017-11-02 2021-09-22 株式会社デンソー 超音波センサ
DE102018106333A1 (de) * 2018-03-19 2019-09-19 HELLA GmbH & Co. KGaA Sensorvorrichtung zur Erfassung von Schall, insbesondere zur Erfassung von Körperschall an einem Fahrzeug

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US3890423A (en) * 1973-07-27 1975-06-17 Nusonics Electroacoustic transducer assembly
CA1087004A (fr) 1976-08-11 1980-10-07 Michael J. Hampshire Generateur de son
US4228379A (en) * 1978-08-28 1980-10-14 American District Telegraph Company Diaphragm type piezoelectric electroacoustic transducer
DE3137745A1 (de) 1981-09-23 1983-04-07 Egon 5000 Köln Gelhard Sensor fuer die durchfuehrung der distanzmessung nach dem ultraschalll-echoprinzip
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EP0477575A1 (fr) * 1990-09-25 1992-04-01 Siemens Aktiengesellschaft Convertisseur ultrasonique, en particulier pour la mesure de flux d'air et de gaz, et son procédé de fabrication
US5121628A (en) 1990-10-09 1992-06-16 Merkl Arthur W Ultrasonic detection system
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Also Published As

Publication number Publication date
WO1999018563A3 (fr) 1999-06-10
WO1999018563A2 (fr) 1999-04-15
EP1064645A2 (fr) 2001-01-03
DE59809750D1 (de) 2003-10-30
DE19744229A1 (de) 1999-04-29
US6374676B1 (en) 2002-04-23

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