EP3386646A1 - Schallwandleranordnung mit biegeelementen und verfahren zur herstellung einer schallwandleranordnung mit biegeelementen - Google Patents
Schallwandleranordnung mit biegeelementen und verfahren zur herstellung einer schallwandleranordnung mit biegeelementenInfo
- Publication number
- EP3386646A1 EP3386646A1 EP16781787.3A EP16781787A EP3386646A1 EP 3386646 A1 EP3386646 A1 EP 3386646A1 EP 16781787 A EP16781787 A EP 16781787A EP 3386646 A1 EP3386646 A1 EP 3386646A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- recess
- recesses
- bending
- layer
- transducer assembly
- 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- Withdrawn
Links
- 238000005452 bending Methods 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000012528 membrane Substances 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 39
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- B06B1/0607—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 multiple elements
- B06B1/0622—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 multiple elements on one surface
-
- 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
Definitions
- the invention relates to a Schwallwandleran extract with at least two bending elements and a method for producing a
- the document DE 39 20 872 A1 discloses a method for the production of ultrasonic transducers, in which a piezoceramic and thermoplastic material are joined together by heat bonding. To generate the necessary heat for the bonding heat loss heat is produced in the piezoceramic by applying electrical signals.
- Ultrasonic transducer array shown, which can be used as a focusing clinically usable ultrasound probe and a corresponding manufacturing method. Lateral side by side trained transducer cells are partially wired together electrically to achieve the desired focus of the ultrasonic conversion.
- the object of the invention is to protect the individual layer converter against external influences. Disclosure of the invention
- the acoustic transducer assembly has a perforated plate carrier which comprises one side with at least two spaced first recesses and which comprises an opposite side with at least two second recesses arranged at a distance.
- a first recess and a second recess are arranged adjacent to one another.
- a lateral extent of the second recess is greater than a lateral extent of the first recess, so that contact surfaces form on the first recess.
- Sound transducer assembly at least two bending elements, wherein a lateral extent of the bending elements is greater than the lateral extent of the first recesses.
- the lateral extent of the bending elements is smaller than the lateral extent of the second recesses.
- a bending element is arranged, wherein the bending element is partially electrically conductively connected to the bearing surfaces.
- the sound transducer arrangement has at least two piezo elements, wherein in each case a piezo element within the first recess below a
- Bending element is arranged and is electrically conductively connected to the bending element.
- a finishing layer is arranged above the perforated plate carrier and the bending elements. The finishing layer is with the
- Biegeiata represents the final layer is a membrane.
- the advantage here is that the individual bending elements are protected against external influences with piezoelectric element, since they are covered or covered by a single layer, namely the top layer.
- Biegeelement and a piezoelectric element comprise, have a symmetrical structure.
- the terminating layer has an electrical insulating layer which is connected to the bending elements and the perforated plate carrier.
- the advantage here is that a vibration-mechanical decoupling arises between the individual transducers.
- Metal layer arranged, in particular a continuous metal layer.
- each bending element has a structured conductive layer, which has a first region, which is arranged substantially centrally and contacts the piezoelectric elements in an electrically conductive manner.
- the structured leiore layer has a second region which is laterally disposed on the edges of the sides of each bending element and the bending element electrically conductively connects to the bearing surfaces.
- each piezoelectric element has a first electrode, which is arranged between the piezoelectric element and the first region of the structured conductive layer.
- each piezoelectric element has a second electrode opposite the first electrodes.
- the second electrode electrically conductively connected to a bonding wire. The advantage here is that the second electrode can be easily contacted with a mass.
- the first recesses are at least partially filled with a damping material.
- the damping material has in particular silicone.
- the hole plate carrier is electrically conductive.
- Perforated plate carrier has in particular a metal or a metallized ceramic.
- the inventive method for producing a sound transducer assembly comprises connecting each of a first electrode of at least two piezo elements, each having a bending element. This connection is made by means of a first region of a structured conductive layer, which is arranged on one side of the bending element. The flexure is on a side opposite the structured conductive layer
- a punch carrier plate comprising one side having at least two spaced first recesses and an opposite side having at least two spaced second recesses is applied to portions of the flexure and the top layer. Because the hole carrier plate first
- a second region of the structured conductive layer of the bending elements is connected to the bearing surfaces and lateral areas between the second recesses are with the
- the first recesses are filled with a damping material.
- the bending element is connected by means of electrically insulating adhesive with the final view.
- the lateral areas between the second recesses by means of electrically insulating adhesive with the
- the second region of the structured conductive layer of the bending elements is connected to the support surface by means of an electrically conductive adhesive.
- FIG. 2 shows a method for producing a sound traveling device.
- FIG. 1 shows a sectional view in the xz direction of FIG
- Sound transducer assembly 100 with three arranged by way of example
- Sound transducer unit comprises a piezoelectric element that is applied to a bending element.
- the connection of the piezoelectric element with the bending element takes place through a first region of a structured conductive layer, which is arranged on one side of the bending element.
- the bending element 111 is applied to an end layer 108 by means of an electrically insulating layer.
- the Bending element 111 is contacted by means of a second region of the electrically conductive layer, in particular with a perforated plate carrier.
- Perforated plate carrier 101 is additionally connected at the lateral areas between the second recesses with the end view. This connection is made using an electrically insulating adhesive.
- the piezoelectric element 106 is contacted by means of a bonding wire 113.
- the first recesses 102 are filled with a damping material.
- the damping material comprises in particular silicone.
- the end layer 108 is composed of multiple layers. One of the layers may include, for example, metal.
- this metal layer is connected to an electrical ground, so that an EMC shielding takes place.
- the metal layer is on the
- Finishing layer 108 is arranged.
- the finishing layer 108 comprises a film.
- the film has, for example, polyamide.
- the bending transducers 111 and 121 comprise a bending body comprising, for example, metal or a metallized ceramic.
- the thickness of the bending transducers 111 and 121 is preferably between 100 ⁇ and 700 ⁇ .
- the piezoelectric element 106 is adhesively bonded to the bending element 111.
- the piezoelectric element 106 carries on both sides a conductive metallization as an electrode.
- the thickness of the piezoelectric element 106 is 150 ⁇ to 700 ⁇ , preferably 200 ⁇ to 500 ⁇ .
- the perforated plate carrier 101 comprises conductive material, for example aluminum or a metallized ceramic and is connected to the electrical ground of the
- the hole plate carrier 101 is mechanically stiff, it carries the bending elements 106 and represents their vibration edge adjustment, so that a bending vibration is formed. Furthermore, the
- Perforated plate carrier 101 for a mechanical decoupling between the
- Transducer elements which means there is a low crosstalk between the transducer elements.
- a thickness of the perforated plate carrier is between 1 to 10 mm.
- the signal contacts of the piezo elements 106 can be carried out with the aid of wires.
- the wires are bonded or by means
- Both the basic shape of the piezo elements 106 and the basic shape of the bending elements 110 and 121 can be arbitrary.
- Piezo elements 106 and the bending transducers 110 and 121 different
- Adopt basic forms Preferred are regular shapes such as circular, elliptical, square, rectangular or polygonal.
- the sound transducer array comprises a number of sound transducer elements in the range of 2 to 250, preferably in the range of 5 to 50 and can assume any geometric basic shapes, preferably linear, matrix-shaped or oval.
- the distance between the piezoelectric transducer units is preferably less than half the airborne sound wavelength.
- FIG. 2 describes a method for producing a sound transducer arrangement 100.
- the method starts with a step 200, in which a first electrode of the piezo elements is connected to a respective bending element 111 and 121 by means of a first region of a structured conductive layer 110.
- the structured conductive layer is arranged on one side of the bending element 111 and 121.
- a terminating layer 108 is applied to an opposite side of the bending element 111 and 121 from the structured conductive layer.
- a perforated plate carrier 101 is applied.
- Punch plate carrier 101 comprises a first recess 102 and second recesses 103, which adjoin one another and wherein on the first recess 102 contact surfaces 104 form.
- the perforated plate carrier 101 thus connects a second region of the structured conductive layer of the
- the first recesses 102 are filled with damping material.
- Both the electrically insulating adhesive layer and the electrically conductive adhesive layer can be done simultaneously for all transducer elements via dispensing or screen printing.
- the features of the individual embodiments can be combined as desired.
- the sound converter arrangements can be used, for example, in motor vehicles for
- Logic systems are used for bearings. They can also be used in driverless transport systems, robots, vacuum cleaners, lawn mowers, electric wheelchairs and two-wheelers.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015224767.8A DE102015224767A1 (de) | 2015-12-10 | 2015-12-10 | Schallwandleranordnung und Verfahren zur Herstellung einer Schallwandleranordnung |
PCT/EP2016/074672 WO2017097472A1 (de) | 2015-12-10 | 2016-10-14 | Schallwandleranordnung mit biegeelementen und verfahren zur herstellung einer schallwandleranordnung mit biegeelementen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3386646A1 true EP3386646A1 (de) | 2018-10-17 |
Family
ID=57136886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16781787.3A Withdrawn EP3386646A1 (de) | 2015-12-10 | 2016-10-14 | Schallwandleranordnung mit biegeelementen und verfahren zur herstellung einer schallwandleranordnung mit biegeelementen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3386646A1 (de) |
CN (1) | CN108367313A (de) |
DE (1) | DE102015224767A1 (de) |
WO (1) | WO2017097472A1 (de) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6129596U (ja) * | 1984-07-24 | 1986-02-22 | 谷口 義晴 | 超音波送受信具の構造 |
US4754440A (en) * | 1985-12-27 | 1988-06-28 | Aisin Seiki Kabushikikaisha | Ultrasonic transducer |
US5174926A (en) * | 1988-04-07 | 1992-12-29 | Sahagen Armen N | Compositions for piezoresistive and superconductive application |
DE3920872A1 (de) | 1989-06-26 | 1991-01-03 | Siemens Ag | Verfahren zur herstellung von ultraschall-wandlern, insbesondere von schichtwandlern, die ausser piezoelektrischem material auch kunststoffmaterial umfassen |
US6058782A (en) * | 1998-09-25 | 2000-05-09 | Kulite Semiconductor Products | Hermetically sealed ultra high temperature silicon carbide pressure transducers and method for fabricating same |
JP3770114B2 (ja) * | 2001-07-11 | 2006-04-26 | 株式会社村田製作所 | 圧電型電気音響変換器およびその製造方法 |
US20050075572A1 (en) | 2003-10-01 | 2005-04-07 | Mills David M. | Focusing micromachined ultrasonic transducer arrays and related methods of manufacture |
JP2008191007A (ja) * | 2007-02-05 | 2008-08-21 | Denso Corp | センサ装置の取り付け構造 |
DE102007027936B4 (de) * | 2007-06-18 | 2009-09-10 | Giesecke & Devrient Gmbh | Tragbarer Datenträger |
JP4944159B2 (ja) * | 2009-06-02 | 2012-05-30 | Tdk株式会社 | 圧電アクチュエータ及び圧電アクチュエータの製造方法 |
DE102011079646A1 (de) * | 2011-07-22 | 2013-02-07 | Robert Bosch Gmbh | Ultraschallsensorvorrichtung zum Erfassen und/oder Senden von Ultraschall |
JP6135088B2 (ja) * | 2012-10-12 | 2017-05-31 | セイコーエプソン株式会社 | 超音波トランスデューサーデバイス、プローブヘッド、超音波プローブ、電子機器及び超音波診断装置 |
CN104022685B (zh) * | 2014-05-23 | 2017-03-08 | 厦门大学 | 运用于压电俘能器的调频阵列式压电悬臂梁俘能方法 |
-
2015
- 2015-12-10 DE DE102015224767.8A patent/DE102015224767A1/de not_active Withdrawn
-
2016
- 2016-10-14 WO PCT/EP2016/074672 patent/WO2017097472A1/de unknown
- 2016-10-14 CN CN201680071565.6A patent/CN108367313A/zh active Pending
- 2016-10-14 EP EP16781787.3A patent/EP3386646A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
CN108367313A (zh) | 2018-08-03 |
WO2017097472A1 (de) | 2017-06-15 |
DE102015224767A1 (de) | 2017-06-14 |
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