EP0940801A3 - Ultrasonic transducer with moulded centering element - Google Patents

Ultrasonic transducer with moulded centering element Download PDF

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Publication number
EP0940801A3
EP0940801A3 EP99103792A EP99103792A EP0940801A3 EP 0940801 A3 EP0940801 A3 EP 0940801A3 EP 99103792 A EP99103792 A EP 99103792A EP 99103792 A EP99103792 A EP 99103792A EP 0940801 A3 EP0940801 A3 EP 0940801A3
Authority
EP
European Patent Office
Prior art keywords
ultrasonic transducer
moulded
centering element
transducer device
disc
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.)
Granted
Application number
EP99103792A
Other languages
German (de)
French (fr)
Other versions
EP0940801B1 (en
EP0940801A2 (en
Inventor
Rudolf Dipl.-Phys. Thurn
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0940801A2 publication Critical patent/EP0940801A2/en
Publication of EP0940801A3 publication Critical patent/EP0940801A3/en
Application granted granted Critical
Publication of EP0940801B1 publication Critical patent/EP0940801B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
    • B06B1/0662—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface
    • B06B1/067—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface which is used as, or combined with, an impedance matching layer

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measuring Volume Flow (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

Die erfindungsgemäße Ultraschallwandlereinrichtung weist einen Ultraschallwandler aus einer Piezokeramikscheibe (2) und einer Anpaßschichtscheibe (1) auf, die zumindest teilweise in einem Gehäuse (3) mittels eines Polymer-Schaumstoffs (5) eingebettet sind. Die Anpaßschichtscheibe (1) ist an ihrer Umfangsfläche durch ein Schaumstoff-Formteil (4) zentriert, das sich kostengünstig vorfertigen läßt und zudem die frontseitige Sichtfläche der Ultraschallwandlereinrichtung optisch nicht beeinträchtigt.

Figure 00000001
The ultrasonic transducer device according to the invention has an ultrasonic transducer consisting of a piezoceramic disc (2) and a matching layer disc (1) which are at least partially embedded in a housing (3) by means of a polymer foam (5). The adapter layer disk (1) is centered on its circumferential surface by a foam molded part (4) which can be prefabricated inexpensively and, moreover, does not visually impair the front face of the ultrasonic transducer device.
Figure 00000001
EP99103792A 1998-03-04 1999-02-26 Ultrasonic transducer with moulded centering element Expired - Lifetime EP0940801B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19809206A DE19809206C2 (en) 1998-03-04 1998-03-04 Ultrasonic transducer device with centering molding
DE19809206 1998-03-04

Publications (3)

Publication Number Publication Date
EP0940801A2 EP0940801A2 (en) 1999-09-08
EP0940801A3 true EP0940801A3 (en) 2001-06-20
EP0940801B1 EP0940801B1 (en) 2004-01-21

Family

ID=7859664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99103792A Expired - Lifetime EP0940801B1 (en) 1998-03-04 1999-02-26 Ultrasonic transducer with moulded centering element

Country Status (2)

Country Link
EP (1) EP0940801B1 (en)
DE (2) DE19809206C2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19957125A1 (en) * 1999-11-26 2001-06-21 Siemens Ag Ultrasound transducer
DE102018005540B4 (en) 2018-07-13 2022-06-09 Pepperl+Fuchs Ag 1D ultrasonic transducer unit
DE102018006139B3 (en) * 2018-08-03 2019-06-19 Pepperl+Fuchs Gmbh 1D ultrasonic transducer unit for area monitoring
DE102018006127B4 (en) * 2018-08-03 2021-07-08 Pepperl+Fuchs Ag 1D ultrasonic transducer unit for material detection
DE102018006130B3 (en) 2018-08-03 2019-08-08 Pepperl + Fuchs Gmbh 1D ultrasonic transducer unit for hazard detection for a vehicle
DE102022200918B3 (en) 2022-01-27 2023-04-27 Vitesco Technologies Germany Gmbh Method of manufacturing an ultrasonic sensor and ultrasonic sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3234896A1 (en) * 1982-09-21 1984-03-22 Siemens AG, 1000 Berlin und 8000 München Ultrasonic transducer
DE3734070A1 (en) * 1987-10-08 1989-04-20 Siemens Ag Syntactic damping foam
DE3823477A1 (en) * 1988-07-11 1990-01-18 Siemens Ag Process for producing ultrasonic transducers
US5329682A (en) * 1991-02-07 1994-07-19 Siemens Aktiengesellschaft Method for the production of ultrasound transformers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3301848C2 (en) * 1983-01-20 1984-11-08 Siemens AG, 1000 Berlin und 8000 München Ultrasonic transducer
DE4323134C1 (en) * 1993-07-10 1994-06-16 Pil Sensoren Gmbh Ultrasonic oscillator - has oversize matching body resting on support ring for acoustic dampening

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3234896A1 (en) * 1982-09-21 1984-03-22 Siemens AG, 1000 Berlin und 8000 München Ultrasonic transducer
DE3734070A1 (en) * 1987-10-08 1989-04-20 Siemens Ag Syntactic damping foam
DE3823477A1 (en) * 1988-07-11 1990-01-18 Siemens Ag Process for producing ultrasonic transducers
US5329682A (en) * 1991-02-07 1994-07-19 Siemens Aktiengesellschaft Method for the production of ultrasound transformers

Also Published As

Publication number Publication date
EP0940801B1 (en) 2004-01-21
DE19809206C2 (en) 2001-02-15
DE19809206A1 (en) 1999-09-23
EP0940801A2 (en) 1999-09-08
DE59908332D1 (en) 2004-02-26

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