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JPS56131221A - Piezoelectric torsional oscillation transducer - Google Patents

Piezoelectric torsional oscillation transducer

Info

Publication number
JPS56131221A
JPS56131221A JP3445780A JP3445780A JPS56131221A JP S56131221 A JPS56131221 A JP S56131221A JP 3445780 A JP3445780 A JP 3445780A JP 3445780 A JP3445780 A JP 3445780A JP S56131221 A JPS56131221 A JP S56131221A
Authority
JP
Japan
Prior art keywords
piezoelectric
metallic
torsional oscillation
film
mass
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.)
Pending
Application number
JP3445780A
Other languages
Japanese (ja)
Inventor
Sadayuki Takahashi
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 JP3445780A priority Critical patent/JPS56131221A/en
Publication of JPS56131221A publication Critical patent/JPS56131221A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/24—Constructional features of resonators of material which is not piezoelectric, electrostrictive, or magnetostrictive

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To mass-produce high-reliable oscillation transducers at low cost by forming thin piezoelectric films around the surfaces of constant-elasticity metallic round bars spirally. CONSTITUTION:On the flank of constant-elasticity metallic round bar 21, one thin piezoelectric film 22 is formed spirally by being sputtered. After a metallic electrode film is provided on the surface of the thin film, a polarizing treatment is only done in the thickness direction, and applying an AC signal between the metallic electrode film and the metallic round bar energizes torsional oscillations. This piezoelectric torsional oscillation transducer can be constituted without using adhesives and has less difficulties in manufacture technique, so that high-reliability piezoelectric torsional oscillation transducers can be mass-produced at low cost.
JP3445780A 1980-03-18 1980-03-18 Piezoelectric torsional oscillation transducer Pending JPS56131221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3445780A JPS56131221A (en) 1980-03-18 1980-03-18 Piezoelectric torsional oscillation transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3445780A JPS56131221A (en) 1980-03-18 1980-03-18 Piezoelectric torsional oscillation transducer

Publications (1)

Publication Number Publication Date
JPS56131221A true JPS56131221A (en) 1981-10-14

Family

ID=12414773

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3445780A Pending JPS56131221A (en) 1980-03-18 1980-03-18 Piezoelectric torsional oscillation transducer

Country Status (1)

Country Link
JP (1) JPS56131221A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6713944B2 (en) * 2002-01-02 2004-03-30 Omron Corporation Actuator and method of manufacturing a strain element
US7902722B2 (en) * 2008-04-03 2011-03-08 Dvx, Llc Transducer apparatus for intravascular blood flow measurement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5563114A (en) * 1978-11-07 1980-05-13 Seiko Instr & Electronics Ltd Mechanical filter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5563114A (en) * 1978-11-07 1980-05-13 Seiko Instr & Electronics Ltd Mechanical filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6713944B2 (en) * 2002-01-02 2004-03-30 Omron Corporation Actuator and method of manufacturing a strain element
US6983521B2 (en) 2002-01-02 2006-01-10 Omron Corporation Method of manufacturing a strain element
US7902722B2 (en) * 2008-04-03 2011-03-08 Dvx, Llc Transducer apparatus for intravascular blood flow measurement

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