GB1514967A - Piezoelectric transducers - Google Patents

Piezoelectric transducers

Info

Publication number
GB1514967A
GB1514967A GB4380875A GB4380875A GB1514967A GB 1514967 A GB1514967 A GB 1514967A GB 4380875 A GB4380875 A GB 4380875A GB 4380875 A GB4380875 A GB 4380875A GB 1514967 A GB1514967 A GB 1514967A
Authority
GB
United Kingdom
Prior art keywords
resonator
bimorph
piezoelectric
cone
transducer
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
GB4380875A
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing 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
Priority claimed from JP1974135778U external-priority patent/JPS5619520Y2/ja
Priority claimed from JP14192074U external-priority patent/JPS5167684U/ja
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of GB1514967A publication Critical patent/GB1514967A/en
Expired legal-status Critical Current

Links

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
    • B06B1/0603—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 a piezoelectric bender, e.g. bimorph

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

1514967 Piezoelectric transducers MURATA MFG CO Ltd 24 Oct 1975 [8 Nov 1974 21 Nov 1974] 43808/75 Heading H4J A piezoelectric transducer for transmitting or receiving ultrasonic waves comprises a base-plate 1 (Fig. 1) having a cylindrical supporting frame 2. One side of a piezoelectric bimorph 6 is secured to the supporting frame 2 by an elastic organic binder and a resonator 8 formed of synthetic resin is attached to the central region of the other side of the bimorph 6. The resonator 8 is a frustum of a cone, of a square pyramid (Fig. 4a, not shown) or a hexagonal pyramid (Fig. 4b, not shown). The cylindrical supporting frame 2 has a diameter equal to the diameter of a nodal circle developed at a predetermined resonant frequency of the transducer. A casing 9, preferably cylindrical, protects the bimorph 6. The resonator 8 may be of A.B.S. or polycarbonate resin. The base-plate 1 is of synthetic resin or other insulating material. The frame 2 may be separate from but attached to the baseplate 1 or the two may be integrally moulded. A metal shield plate 4 is provided. The piezoelectric bimorph 6 is square and is of ceramic. In a first alternative embodiment (Fig. 5, not shown) a piezoelectric bimorph disc has a resonator (11) in the form of a frustum of a cone, the small base portion being recessed. In a second alternative embodiment (Fig. 6, not shown) the resonator (13) is in the form of a cone having an axial aperture (14). The transducer may be used in remote control of a T.V. set.
GB4380875A 1974-11-08 1975-10-24 Piezoelectric transducers Expired GB1514967A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1974135778U JPS5619520Y2 (en) 1974-11-08 1974-11-08
JP14192074U JPS5167684U (en) 1974-11-21 1974-11-21

Publications (1)

Publication Number Publication Date
GB1514967A true GB1514967A (en) 1978-06-21

Family

ID=26469539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4380875A Expired GB1514967A (en) 1974-11-08 1975-10-24 Piezoelectric transducers

Country Status (5)

Country Link
DE (1) DE2547606A1 (en)
FR (1) FR2290816A1 (en)
GB (1) GB1514967A (en)
IT (1) IT1049046B (en)
NL (1) NL7513035A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003105527A1 (en) * 2002-06-05 2003-12-18 Sportzwhistle Pty Ltd Piezoelectric transducer systems
GB2521762A (en) * 2013-12-27 2015-07-01 Furuno Electric Co Ultrasonic transmitting and/or receiving device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4283649A (en) * 1978-09-21 1981-08-11 Murata Manufacturing Co., Ltd. Piezoelectric ultrasonic transducer with resonator laminate
JPS57166800A (en) * 1981-04-07 1982-10-14 Nippon Soken Inc Ultrasonic wave transmitter and receiver

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003105527A1 (en) * 2002-06-05 2003-12-18 Sportzwhistle Pty Ltd Piezoelectric transducer systems
US7309942B2 (en) 2002-06-05 2007-12-18 Sportzwhistle Pty Ltd Piezoelectric transducer systems
GB2521762A (en) * 2013-12-27 2015-07-01 Furuno Electric Co Ultrasonic transmitting and/or receiving device
GB2521762B (en) * 2013-12-27 2020-10-07 Furuno Electric Co Ultrasonic Transmitting and/or Receiving Device, Underwater Detection Apparatus, and Method for Manufacturing Ultrasonic Transmitting and/or Receiving Device

Also Published As

Publication number Publication date
IT1049046B (en) 1981-01-20
FR2290816B1 (en) 1982-10-01
DE2547606A1 (en) 1976-05-13
FR2290816A1 (en) 1976-06-04
NL7513035A (en) 1976-05-11

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19951023