WO2021239400A1 - Coupelle de diaphragme - Google Patents

Coupelle de diaphragme Download PDF

Info

Publication number
WO2021239400A1
WO2021239400A1 PCT/EP2021/061644 EP2021061644W WO2021239400A1 WO 2021239400 A1 WO2021239400 A1 WO 2021239400A1 EP 2021061644 W EP2021061644 W EP 2021061644W WO 2021239400 A1 WO2021239400 A1 WO 2021239400A1
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
pot
electrical connecting
connecting elements
diaphragm
Prior art date
Application number
PCT/EP2021/061644
Other languages
German (de)
English (en)
Inventor
Andre Gerlach
Bernd SCHEUFELE
Friedrich Kneule
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 WO2021239400A1 publication Critical patent/WO2021239400A1/fr

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
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2207/00—Details of diaphragms or cones for electromechanical transducers or their suspension covered by H04R7/00 but not provided for in H04R7/00 or in H04R2307/00
    • H04R2207/021—Diaphragm extensions, not necessarily integrally formed, e.g. skirts, rims, flanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/025—Diaphragms comprising polymeric materials
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/204—Material aspects of the outer suspension of loudspeaker diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
    • H04R2440/05—Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery

Definitions

  • the invention relates to a diaphragm pot, in particular for a sound transducer, as well as a sound transducer with the diaphragm pot.
  • the invention also relates to a method for producing a diaphragm pot and a method for producing a sound transducer.
  • the document DE19626293 describes the electrical contacting of a piezo element of an ultrasonic sensor by means of contact springs.
  • the contact springs are cast in an annular connecting body made of plastic. This connecting body is in turn pressed into a pot-shaped oscillating element. This enables mechanical and electrical contact of the contact springs with the piezo element and the inner jacket surface of the electrically conductive, pot-shaped oscillating element.
  • the object of the present invention is to develop a simplified structure for a diaphragm pot.
  • a diaphragm pot according to claim 1 is proposed.
  • a sound transducer according to claim 7 as well as a method for producing a membrane pot according to claim 12 and a method for producing a sound transducer according to claim 13 are proposed.
  • the diaphragm pot which is particularly suitable for a sound transducer, has a diaphragm, in particular a vibratory diaphragm.
  • the membrane of the membrane pot is designed in one piece as a plastic component, in particular as a fiber-plastic composite component.
  • the diaphragm pot has at least two electrical connecting elements for electrically connecting a transducer element, in particular a piezoelectric transducer element of the sound transducer, to a printed circuit board.
  • the at least two electrical connection elements are at least partially integrated into the membrane of the membrane pot.
  • the electrical connection elements can for example be at least partially cast into the membrane.
  • This form-fitting and / or material connection between the at least two electrical connecting elements and the membrane of the diaphragm pot is preferably designed to be non-detachable.
  • the membrane pot preferably also has a wall, the membrane and the wall of the membrane pot being designed in one piece as a plastic component, in particular as a fiber-plastic composite component.
  • the at least two electrical connection elements are also at least partially integrated into the wall of the membrane pot.
  • the membrane is preferably designed as a circular area, to which a preferably correspondingly circular cylindrical wall adjoins in the membrane pot.
  • the membrane can also be designed as an oval surface or as a rectangular surface, the wall of the membrane pot having a corresponding shape, thus, for example, also being configured as an oval cylinder or as a rectangular cylinder.
  • the membrane preferably has a fiber reinforcement at least in part.
  • This fiber reinforcement is preferably designed as a fiber mat.
  • the fiber mat is preferably arranged centrally in the membrane as a fiber reinforcement.
  • the membrane or a partial area of the membrane is preferably reinforced with fibers as a first area of the fiber-plastic composite component and the The wall of the membrane pot is designed as a second area of the fiber-plastic composite component free of fibers.
  • the plastic of the fiber-plastic composite component is preferably selected from a thermoplastic or thermosetting plastic.
  • the at least two electrical connection elements for the electrical connection of the converter element to the printed circuit board are preferably designed as at least two electrical contact pins, in particular electrical plug-in pins. These electrical contact pins are designed to be electrically conductive from metal, in particular copper, and represent a simple, mechanically stable possibility of electrically connecting the transducer element to the printed circuit board.
  • the at least two electrical connection elements preferably each have a first and a second electrical contact-making side.
  • the first contacting side is designed for making electrical contact with the transducer element and is at least partially, in particular completely, integrated into the membrane of the membrane pot.
  • the first and second electrical contacting side are preferably to be understood here as end pieces, in particular edge regions, of the electrical connection elements, which are designed, for example, as electrical contact pins.
  • the membrane which is arranged on a bottom surface of the membrane pot and the, in particular hollow-cylindrical wall of the membrane pot, preferably form an interior space of the membrane pot.
  • the at least two electrical connecting elements are preferably arranged completely outside the interior of the membrane pot.
  • the at least two electrical connection elements are preferably at least partially embedded in the membrane of the membrane pot in such a way that the at least two electrical connection elements are positively connected to the membrane of the membrane pot.
  • the membrane pot preferably also has at least one stiffening element for stiffening the wall of the membrane pot.
  • the at least one stiffening element is arranged in the interior of the diaphragm pot, which is spanned by the wall and membrane of the diaphragm pot, in particular completely in the interior of the diaphragm pot.
  • the purpose of the stiffening element is to decouple the wall of the diaphragm pot in terms of vibration mechanics from the, in particular vibratable, diaphragm of the diaphragm pot.
  • the stiffening element preferably has a configurable influence on the functional vibration properties of the membrane pot (for example, resonance frequency, damping and directional characteristic).
  • the at least one stiffening element is preferably connected to the diaphragm pot in a form-fitting and / or force-fitting manner.
  • the stiffening element can be glued to the diaphragm pot, for example, and / or there is a press connection between the stiffening element and the diaphragm pot.
  • the stiffening element is preferably detachably connected to the membrane pot. In this context, for example, a click connection of the stiffening element with the membrane pot, in particular the wall of the membrane pot, can be provided.
  • the at least one stiffening element is preferably also integrated into the wall of the membrane pot.
  • the stiffening element By integrating the stiffening element into the wall of the diaphragm pot and thus the one-piece design of the diaphragm pot, the construction of the diaphragm pot is made much simpler than conventionally manufactured diaphragm pots, the components of which are individually assembled.
  • the stiffening element can for example be cast into the wall.
  • the stiffening element is preferably designed to connect opposing surfaces of the wall, in particular the wall, which is designed in the shape of a hollow cylinder, to one another.
  • the stiffening element is arranged on a side of the interior of the membrane pot opposite the membrane. This results in an optimal vibration-mechanical decoupling of the membrane from the wall of the membrane pot.
  • the stiffening element is preferably designed in the form of a plate.
  • the stiffening element is preferably made of a metal, in particular aluminum.
  • the stiffening element is formed from a plastic or a fiber-plastic composite.
  • Another object of the present invention is a sound transducer, in particular an ultrasonic transducer, which has the membrane pot described above, a transducer element, in particular a piezoelectric transducer element, and a printed circuit board.
  • the printed circuit board or circuit board is a carrier for electronic components of the sound transducer.
  • the circuit board is used for mechanical fastening and electrical connection of the sound transducer.
  • the diaphragm pot here has a membrane.
  • the membrane of the membrane pot is designed in one piece as a plastic component, in particular as a fiber-plastic composite component.
  • the diaphragm pot has at least two electrical connection elements for the electrical connection of the transducer element to the circuit board. These at least two electrical connecting elements are at least partially integrated into the membrane of the membrane pot.
  • the one-piece construction of the membrane and the integration of the at least two electrical connecting elements into the membrane of the membrane pot result in a sound transducer with a simple and particularly robust structure.
  • the at least two electrical connection elements are preferably designed as contact pins, in particular electrical plug-in pins.
  • the transducer elements which are designed in particular as piezo transducers with corresponding contact electrodes, are therefore in electrically conductive contact with the electrical connecting elements.
  • the electrical connecting elements are in turn contacted with the circuit board. This means that the transducer can be operated electrically.
  • the transducer element is preferably designed as a piezoelectric transducer element with an upper side and a lower side.
  • the top of the piezoelectric transducer element is aligned in the direction of the diaphragm of the diaphragm pot.
  • the top and the bottom are preferably designed as flat surfaces of the piezoelectric transducer element.
  • the at least two electrical connecting elements are at least partially integrated into the membrane of the membrane pot in such a way that the at least two electrical connecting elements, in particular the previously described first contacting side of the respective electrical connecting element, are at least indirectly connected to the top of the transducer element, which are in particular formed with electrodes of the traveling element. An electrical connection of the piezo transducer is thus established simply via the top of the piezo transducer.
  • the upper side of the transducer element is preferably indirectly connected to the at least two electrical connecting elements by means of an electrically conductive adhesive.
  • a cohesive connection between the transducer element and electrical connecting elements is thus established.
  • the electrical conductivity of the adhesive also guarantees the electrical connection between the piezoelectric transducer element and the electrical connection elements. A connection by means of electrically conductive wires can therefore be dispensed with.
  • the adhesive prevents the piezoelectric traveling element from being displaced in a main direction of extent of the diaphragm pot, in particular in a longitudinal axis of the diaphragm pot.
  • the membrane and the transducer element are preferably connected to one another in a form-fitting manner.
  • the positive connection preferably prevents the transducer element from being displaced in the radial direction of the diaphragm pot, in particular in a circumferential direction of the diaphragm pot.
  • the positive connection is preferably made by engaging an elevation or a peg of the membrane with a hole or a depression in the transducer element.
  • Another object of the present invention is a method for producing the membrane pot described above.
  • at least two electrical connecting elements are initially arranged on a fiber reinforcement, in particular a fiber mat. Arranging the connecting elements on the fiber reinforcement can mean connecting the components loosely or firmly to one another.
  • the fiber reinforcement, in particular the fiber mat serves as a base on which the at least two electrical connecting elements are then arranged.
  • the preassembled first assembly is then introduced into a cavity of a casting machine.
  • the casting machine is in particular one Injection molding machine.
  • a plastic material is then injected into the cavity.
  • the fiber reinforcement is here completely and the at least two electrical connecting elements are at least partially enclosed by the plastic material. This leads to the fact that the membrane pot is formed with the membrane and the at least two electrical connecting elements.
  • the at least two electrical connecting elements are at least partially integrated into the membrane of the membrane pot.
  • At least one stiffening element for stiffening the wall of the diaphragm pot is preferably attached to the diaphragm pot.
  • the stiffening element can be attached, for example, to a side opposite the membrane of the, in particular hollow cylindrical, wall of the membrane pot.
  • the stiffening element can, for example, be glued to the wall of the membrane pot.
  • the stiffening element can also be introduced into the cavity of the tool, in particular of the injection molding tool. The plastic material is then injected into the cavity. The stiffening element is at least partially in contact with the plastic material and / or is enclosed by the plastic material. The stiffening element is thus also integrated into the diaphragm pot.
  • Another object of the present invention is a method for producing the sound transducer described above.
  • the first subassembly is first preassembled again by arranging the at least two electrical connecting elements on a fiber reinforcement, in particular a fiber mat.
  • a first contact-making side of the respective electrical connection element is then at least indirectly connected to an upper side of a transducer element, in particular to electrodes of the traveling element.
  • This method step generates a second assembly which also includes the first assembly.
  • This preassembled second assembly is then introduced into a cavity of a casting machine, in particular an injection molding machine.
  • a plastic material is then injected into the cavity. When injected, the fiber reinforcement becomes complete and the at least two electrical connection elements are at least partially enclosed by the plastic material.
  • the at least two electrical connection elements are thus at least partially integrated into the membrane of the membrane pot.
  • a second contact-making side of the respective electrical connection element is then connected to a printed circuit board.
  • the sound transducer is thus formed with the transducer element, the printed circuit board and the diaphragm pot, comprising the diaphragm and the at least two electrical connecting elements.
  • the first contact-making side of the respective electrical connection element is preferably connected to the upper side of the transducer element by means of an electrically conductive adhesive.
  • the printed circuit board is preferably also attached in a housing of the sound transducer and the housing is in turn connected to the membrane pot of the sound transducer in a materially and / or form-fitting and / or force-fitting manner.
  • Figure 1 shows an embodiment of a sound transducer.
  • Figures 2a and 2b show a method for producing a sound transducer. Embodiments of the invention
  • FIG. 1 shows a sound transducer 1 in cross section.
  • the sound transducer here has a membrane pot 5.
  • the diaphragm pot 5 in turn has an oscillatable diaphragm 10.
  • the membrane 10 of the membrane pot 5 is designed in one piece as a fiber-plastic composite component with a fiber reinforcement 15.
  • the fiber reinforcement 15 is designed as a fiber mat.
  • the membrane pot 5 also has two electrical connecting elements 20a and 20b for the electrical connection of a transducer element 25 to a printed circuit board 45 of the sound transducer 1.
  • the two electrical connection elements 20a and 20b are at least partially integrated into the membrane 10 of the membrane pot 5.
  • the electrical connection elements 20a and 20b are embedded in a partial area 24a and 24b in the membrane 10 of the membrane pot 5 in such a way that the two electrical connection elements 20a and 20b are positively connected to the membrane 10 of the membrane pot 5.
  • the two electrical connecting elements 20a and 20b which are designed as contact pins, each have a first 21a and 21b and a second electrical contacting side 22a and 22b.
  • the first contacting side 21a and 21b of the respective electrical connecting element 20a and 20b is used for making electrical contact with the sound transducer 1.
  • the membrane pot 5 also has a wall 6.
  • the membrane 10 and the wall 6 of the membrane pot 5 are designed in one piece as a fiber-plastic composite component.
  • the two electrical connection elements 20a and 20b are also at least partially integrated into the wall 6 of the membrane pot 5.
  • the membrane 10 has a circular oscillation surface which adjoins the wall 6 in the membrane pot 5.
  • the membrane 10 is arranged on a bottom of the membrane pot 5 and, together with the wall 6 of the membrane pot 5, which in this embodiment is designed in the shape of a hollow cylinder, an interior space 18 of the membrane pot 5 is spanned.
  • the electrical connecting elements 20a and 20b are arranged outside the interior 18 of the diaphragm pot 5.
  • the membrane pot 5 has a stiffening element 35 for stiffening the wall 6 of the membrane pot 5.
  • the stiffening element 35 is arranged completely in the interior space 18 of the diaphragm pot 5 and, in this exemplary embodiment, connects opposite surfaces of the wall 6 to one another.
  • the stiffening element 35 which in this case is made of aluminum, thus supports the wall 6 and thus prevents the wall 6 from oscillating when the membrane 10 vibrates.
  • the plate-shaped stiffening element 35 in this exemplary embodiment is on one of the membrane 10 opposite side of the interior 18 of the membrane pot 5 is arranged.
  • the stiffening element 35 is materially connected to the wall 6, for example by means of gluing.
  • the transducer element 25 of the sound transducer 1 is designed as a piezoelectric transducer element with an upper side 11a and a lower side 11b.
  • the upper side 11 a is oriented in the direction of the membrane 10 of the membrane pot 5.
  • the first contact side 21a and 21b of the respective electrical connection element 20a and 20b is connected to electrodes 30 of the traveling element 25, arranged on the top side 11a of the transducer element 25, by means of an electrically conductive adhesive 40.
  • the adhesive 11 prevents the traveling element 25 from being displaced in a main direction of extent 36 of the membrane pot 5.
  • the membrane 10 has a pin 17 as an elevation.
  • the piezo element 25 has a hole 19 as a recess. The pin 17 and the hole 19 are in engagement, as a result of which a positive connection between the membrane 10 and the transducer element 25 is created. This positive connection prevents the transducer element 25 from being displaced in the radial direction 37 of the diaphragm pot 5.
  • Figures 2a and 2b show schematically a method for producing a sound transducer 1.
  • a preassembled second assembly 2 is shown.
  • two contact pins are initially arranged as electrical connection elements 20a and 20b on a fiber reinforcement 15, which in this case is designed as a fiber mat.
  • a first assembly 3 is generated, which later represents a membrane pot 5 in the finished product.
  • Each electrical connection element 20a or 20b has a first contact-making side 21a or 21b, which is used for making electrical contact with the sound transducer 1.
  • This first contact side 21a and 21b is connected in a subsequent method step by means of an electrically conductive adhesive 40 to the electrodes 30 on an upper side 11a of a transducer element 25.
  • the first assembly 3 comprehensive second assembly 2 generated.
  • the preassembled second subassembly 2 is introduced into a cavity, not shown here, of a casting machine, in particular an injection molding machine.
  • a plastic material is then injected into the cavity.
  • the fiber reinforcement 15 is completely enclosed and the at least two electrical connecting elements 20a and 20b are at least partially enclosed by the plastic material.
  • the two electrical connection elements 20a and 20b are thus at least partially integrated into a vibratory membrane 10 of the membrane pot 5.
  • a second contact side 22a and 22b of the respective connecting element 20a and 20b is electrically connected to a printed circuit board 45.
  • the sound transducer 1 is thus formed with the transducer element 25, the printed circuit board 45 and the diaphragm pot 5, comprising the diaphragm 10 and the at least two electrical connecting elements 20a and 20b.
  • the second subassembly 2 has a cavity 19 between the transducer element 25 and the fiber reinforcement 15 prior to the injection of the plastic material.
  • This cavity 19 is filled with the plastic material when the plastic material is injected, as a result of which a pin 17 is produced as an elevation in the membrane 10. This creates a form-fitting connection between the membrane 10 and the transducer element 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne une coupelle de diaphragme (5), en particulier pour un transducteur acoustique (1), la coupelle de diaphragme (5) comprenant un diaphragme (10). Le diaphragme (10) de la coupelle de diaphragme (5) est réalisé d'une seule pièce en tant qu'élément en plastique, en particulier un élément composite en fibres plastiques. La coupelle de diaphragme (5) comprend au moins deux éléments de connexion électrique (20a, 20b) pour connecter électriquement un élément transducteur (25), en particulier un élément transducteur piézoélectrique du transducteur acoustique (1), à une carte de circuit imprimé (45). Lesdits éléments de connexion électrique (20a, 20b) sont au moins partiellement intégrés dans le diaphragme (10) de la coupelle de diaphragme (5).
PCT/EP2021/061644 2020-05-25 2021-05-04 Coupelle de diaphragme WO2021239400A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020206431.8 2020-05-25
DE102020206431.8A DE102020206431A1 (de) 2020-05-25 2020-05-25 Membrantopf

Publications (1)

Publication Number Publication Date
WO2021239400A1 true WO2021239400A1 (fr) 2021-12-02

Family

ID=75888006

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/061644 WO2021239400A1 (fr) 2020-05-25 2021-05-04 Coupelle de diaphragme

Country Status (2)

Country Link
DE (1) DE102020206431A1 (fr)
WO (1) WO2021239400A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19626293A1 (de) 1996-07-01 1998-01-08 Teves Gmbh Alfred Ultraschallwandler mit Kontaktglied
EP1921464A2 (fr) * 2006-11-07 2008-05-14 Meta System S.p.A. Dispositif détecteur, notamment pour des applications d'aide au stationnement des véhicules et de protection contre des intrusions
WO2018177945A1 (fr) * 2017-03-30 2018-10-04 Robert Bosch Gmbh Transducteur acoustique comprenant un élément transducteur piézocéramique intégré dans une membrane oscillante
DE102017216868A1 (de) * 2017-09-25 2019-03-28 Robert Bosch Gmbh Schallwandler
WO2020249457A1 (fr) * 2019-06-13 2020-12-17 USound GmbH Transducteur acoustique de type mems muni d'une membrane formée de polymère

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19626293A1 (de) 1996-07-01 1998-01-08 Teves Gmbh Alfred Ultraschallwandler mit Kontaktglied
EP1921464A2 (fr) * 2006-11-07 2008-05-14 Meta System S.p.A. Dispositif détecteur, notamment pour des applications d'aide au stationnement des véhicules et de protection contre des intrusions
WO2018177945A1 (fr) * 2017-03-30 2018-10-04 Robert Bosch Gmbh Transducteur acoustique comprenant un élément transducteur piézocéramique intégré dans une membrane oscillante
DE102017216868A1 (de) * 2017-09-25 2019-03-28 Robert Bosch Gmbh Schallwandler
WO2020249457A1 (fr) * 2019-06-13 2020-12-17 USound GmbH Transducteur acoustique de type mems muni d'une membrane formée de polymère

Also Published As

Publication number Publication date
DE102020206431A1 (de) 2021-11-25

Similar Documents

Publication Publication Date Title
EP3320694B1 (fr) Module à carte de circuit imprimé mems à structure piézoélectrique intégrée et ensemble transducteur acoustique
DE102008041132A1 (de) Biegewandler zum Erzeugen von elektrischer Energie aus mechanischen Verformungen
DE19922148A1 (de) Piezoelektrisches akustisches Bauteil
WO1999053475A1 (fr) Element de contact pour un detecteur ultrasonore
EP1890162A2 (fr) Dispositif de mesure électrique
WO2011073414A2 (fr) Ensemble oscillant pour transducteur ultrasonore et procédé de fabrication de cet ensemble oscillant
DE10229845A1 (de) Piezoelektrischer Elektroakustischer Transducer
WO2021239400A1 (fr) Coupelle de diaphragme
EP3600698A1 (fr) Transducteur acoustique comprenant un élément transducteur piézocéramique intégré dans une membrane oscillante
EP0909223B1 (fr) Transducteur ultrasonique avec element de contact
WO2021197848A1 (fr) Corps de diaphragme
DE112018005685B4 (de) Durchflussmesser
WO2019057375A1 (fr) Transducteur acoustique
DE102013114045A1 (de) System zur Bestimmung und/oder Überwachung einer Prozessgröße eines Mediums
EP3374235B1 (fr) Sonde acoustique pour l'émission et/ou la réception de signaux acoustiques
DE102012107315B4 (de) Schwingvorrichtung für eine Füllstandsmesseinheit
EP3600697B1 (fr) Transducteur acoustique comprenant un élément transducteur intégré dans une membrane oscillante et comportant un polymère électroactif
DE102018115553A1 (de) Ultraschallsensor-Baugruppe und Ultraschallsensorvorrichtung
EP3625587A1 (fr) Module électronique
DE102022213522A1 (de) Motorkontaktplatte für ein Steuergerät und Steuergerät
DE102022211328A1 (de) Sensorbaugruppe für ein Fahrzeug
DE20301325U1 (de) Piezoelektrischer Taster
WO2019197268A1 (fr) Transducteur acoustique
EP2007178B1 (fr) Appareil électronique doté d'au moins un élément de raccordement électrique et procédé de fabrication d'un élément de raccordement
DE102022203361A1 (de) Ultraschallsensor für ein Kraftfahrzeug

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21724596

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21724596

Country of ref document: EP

Kind code of ref document: A1