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JPS55123297A - Composite vibrator - Google Patents

Composite vibrator

Info

Publication number
JPS55123297A
JPS55123297A JP3143579A JP3143579A JPS55123297A JP S55123297 A JPS55123297 A JP S55123297A JP 3143579 A JP3143579 A JP 3143579A JP 3143579 A JP3143579 A JP 3143579A JP S55123297 A JPS55123297 A JP S55123297A
Authority
JP
Japan
Prior art keywords
vibrator
wave
receiving
elastic body
piezoelectric
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
JP3143579A
Other languages
Japanese (ja)
Other versions
JPS6255360B2 (en
Inventor
Katsumi Sugiuchi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP3143579A priority Critical patent/JPS55123297A/en
Publication of JPS55123297A publication Critical patent/JPS55123297A/en
Publication of JPS6255360B2 publication Critical patent/JPS6255360B2/ja
Granted 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
    • G10K9/121—Flextensional transducers
    • 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
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R17/08—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

PURPOSE:To improve wave-transmitting sensitivity and wave-receiving sensitivity by forming a wave-transmitting longitudinal vibrator and wave-receiving vibrator in a body as to an underwater acoustic detector. CONSTITUTION:Four piezoelectric or electrostrictive materials 2 are connected in parallel and stacked and metal elastic bodies 3 and 4 are bonded to both the ends to form wave-transmitting longitudinal vibrator 1, and piezoelectric sheet 10 provided with positive and negative electrodes on the top and reverse surfaces of a polymer piezoelectric matrial is bonded to thin disk cylindrical elastic body 9 to form a wave- receiving vibrator. Then, when vibrator 1 is driven at a resonance frequency from lead wires 5 and 6, vibration-directional resonance comes into effect and both the flanks are bellys while the center part is a node. As vibrator 1 contracts, elastic body 9 of the wave-receiving vibrator expands and as vibrator expands, elastic body 9 contracts; and sheet 10 deforms correspondingly to develop an output voltage between lead wires 11 and 12.
JP3143579A 1979-03-16 1979-03-16 Composite vibrator Granted JPS55123297A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3143579A JPS55123297A (en) 1979-03-16 1979-03-16 Composite vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3143579A JPS55123297A (en) 1979-03-16 1979-03-16 Composite vibrator

Publications (2)

Publication Number Publication Date
JPS55123297A true JPS55123297A (en) 1980-09-22
JPS6255360B2 JPS6255360B2 (en) 1987-11-19

Family

ID=12331148

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3143579A Granted JPS55123297A (en) 1979-03-16 1979-03-16 Composite vibrator

Country Status (1)

Country Link
JP (1) JPS55123297A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0556494A (en) * 1991-08-23 1993-03-05 Tech Res & Dev Inst Of Japan Def Agency Underwater transmitter-receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0556494A (en) * 1991-08-23 1993-03-05 Tech Res & Dev Inst Of Japan Def Agency Underwater transmitter-receiver

Also Published As

Publication number Publication date
JPS6255360B2 (en) 1987-11-19

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