GB978202A - Improvements in or relating to electro-acoustic transducers - Google Patents

Improvements in or relating to electro-acoustic transducers

Info

Publication number
GB978202A
GB978202A GB36663/62A GB3666362A GB978202A GB 978202 A GB978202 A GB 978202A GB 36663/62 A GB36663/62 A GB 36663/62A GB 3666362 A GB3666362 A GB 3666362A GB 978202 A GB978202 A GB 978202A
Authority
GB
United Kingdom
Prior art keywords
abutment
metal
rigid
metal layers
piezo
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
Application number
GB36663/62A
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 and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
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 and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB978202A publication Critical patent/GB978202A/en
Expired 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
    • 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
    • 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
    • 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
    • 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
    • H04R7/22—Clamping rim of diaphragm or cone against seating

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

978,202. Piezo - electric instruments. SIEMENS & HALSKE A.G. Sept. 27, 1962 [Sept. 29, 1961], No. 36663/62. Heading H4J. A membrane of an electro-acoustic transducer consists of or includes a plate of piezoelectric material coated on each side with a layer of metal and is mounted by being gripped in the region of its periphery, the roughness of each of the two sides of the piezo-electric plate not exceeding five microns. The membrane is preferably mounted between a rigid abutment and a resilient abutment. A microphone or loudspeaker comprises two discs 4, 5 (Fig. 1) of piezo-electric material each of thickness about 0.2 mm. and produced by grinding, followed by lapping or polishing. Each has a surface roughness of less than five microns and each is coated on opposite sides with metal layers 8, 9, 10, 11. Layers 8, 9 are cemented or soldered together. The discs 4, 5 are gripped between a rigid annular spigot 6 and a ring 7 of soft rubber, foam material or soft thermoplastics. The metal layers each have a diameter of about 0.91 times the diameter of the rigid abutment. Metal layers 8, 9 as well as metal layers 10, 11 are provided with contacts (not shown) for electrical connections. In a modification rigid abutment 12 (Fig. 2) is of acute-angled cross-section, the edge of the angle being rounded off. A spring ring 13 of sheet metal abutting cover 2 or attached thereto provides a resilient abutment. Alternatively the rigid abutment is a metal toroid 14 (Fig. 3) and the resilient abutment is a soft rubber toroid 15.
GB36663/62A 1961-09-29 1962-09-27 Improvements in or relating to electro-acoustic transducers Expired GB978202A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES76040A DE1144770B (en) 1961-09-29 1961-09-29 Electroacoustic converter

Publications (1)

Publication Number Publication Date
GB978202A true GB978202A (en) 1964-12-16

Family

ID=7505841

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36663/62A Expired GB978202A (en) 1961-09-29 1962-09-27 Improvements in or relating to electro-acoustic transducers

Country Status (6)

Country Link
US (1) US3222462A (en)
BE (1) BE623017A (en)
CH (1) CH415759A (en)
DE (1) DE1144770B (en)
GB (1) GB978202A (en)
NL (1) NL283763A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3453458A (en) * 1965-04-19 1969-07-01 Clevite Corp Resonator supporting structure
US3359435A (en) * 1965-05-04 1967-12-19 James E Webb Holder for crystal resonators
US3497729A (en) * 1967-01-20 1970-02-24 Us Navy Mount for acoustic transducers
US3573394A (en) * 1967-09-14 1971-04-06 Ind Scient Research Corp Piezoelectric microphone with biasing means
NL6813993A (en) * 1968-09-30 1970-04-01
US3638052A (en) * 1969-09-22 1972-01-25 Dynamics Corp America Electroacoustic transducers of the bilaminar flexural vibrating type
US3708702A (en) * 1970-12-02 1973-01-02 Siemens Ag Electroacoustic transducer
US3721840A (en) * 1971-09-14 1973-03-20 Nittan Co Ltd Sound generator
GB1515287A (en) * 1974-05-30 1978-06-21 Plessey Co Ltd Piezoelectric transducers
US4240002A (en) * 1979-04-02 1980-12-16 Motorola, Inc. Piezoelectric transducer arrangement with integral terminals and housing
US4246447A (en) * 1979-05-29 1981-01-20 Iec Electronics Corporation Piezoelectric transducer drive
CH642503A5 (en) * 1979-08-02 1984-04-13 Landis & Gyr Ag Ultrasound converter
DE3013788C2 (en) * 1980-04-10 1982-11-25 Siemens AG, 1000 Berlin und 8000 München Piezoceramic disc for a signal generator to generate an acoustic signal
US4373119A (en) * 1980-12-05 1983-02-08 Motorola, Inc. Adjustable transducer
US4941202A (en) * 1982-09-13 1990-07-10 Sanders Associates, Inc. Multiple segment flextensional transducer shell
US4475014A (en) * 1982-09-13 1984-10-02 Harman-Motive Inc. Acoustical transducer
FR2583115B1 (en) * 1985-06-10 1989-03-10 Centre Techn Ind Mecanique ELECTROFLUIDIC TRANSDUCER OF THE NOZZLE / PALLET TYPE AND HYDRAULIC SERVOVALVE EQUIPPED WITH SUCH A TRANSDUCER
US4708600A (en) * 1986-02-24 1987-11-24 Abujudom Ii David N Piezoelectric fluid pumping apparatus
EP0333055B1 (en) * 1988-03-17 1994-11-02 TDK Corporation Piezoelectric buzzer and a method of manufacturing the same
IT216578Z2 (en) * 1989-05-15 1991-09-16 Face Standard Ind PIEZOCERAMIC CAPSULE FOR TELEPHONE DEVICES.

Also Published As

Publication number Publication date
DE1144770B (en) 1963-03-07
BE623017A (en)
NL283763A (en)
US3222462A (en) 1965-12-07
CH415759A (en) 1966-06-30

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