EP0112562A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Ultrasonic transducer and method for manufacturing the same
Assignee: Toshiba Corp
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Filing: 1983-12-22
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Granted: —
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Expires: 2003-12-22
Abstract
Abstract An ultrasonic transducer comprising piezoelectric resonators, a matching layer (24) formed on the ultrasonic oscillation surfaces of the resonators (12), and a backing material (15) adhered on the opposite surface to the ultrasonic oscillation surface, wherein a cylindrical case (14) is fixed to the circumference of the resonators (12) and the backing material (15) is formed by being cast into the case (14). A method for manufacturing the ultrasonic transducer, wherein the piezoelectric ceramic (12) is temporarily fixed on a metal support and devided into a predetermined shape and a backing material (15) is formed as such that lead wires (13) are allowed to extend through the backing material (15).
Inventors
- 👤 Susumu Enjoji
- 👤 Kazufumi Ishiyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 12:57
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0607; G; G01; G01N; G01N29/00; G01N29/22; G01N29/24; G01N29/2437; G01N29/245; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
125 words
An ultrasonic transducer having piezoelectric resonators consisting of a piezoelectric ceramic and having predetermined divided shapes obtained by dividing a piezoelectric ceramic, a matching layer formed on an ultrasonic oscillation surface of each of said piezoelectric resonators, and a backing material adhered on an opposite surface to the ultrasonic oscillation surface of each of said piezoelectric resonators, characterized in that a cylindrical case (14) is provided which has one end bonded to a peripheral edge of the piezoelectric ceramic (12) and extends in a direction away from the ultrasonic oscillation surfaces, the backing material (15) is cast into and filled in an extending portion of said case (14), and lead wires (13) from electrodes of said piezoelectric resonators (12) extend through the backing material (15).
Claim 2
Dependent Claim
125 words
An ultrasonic transducer having piezoelectric resonators consisting of a piezoelectric ceramic and having predetermined divided shapes obtained by dividing a piezoelectric ceramic, a matching layer formed on an ultrasonic oscillation surface of each of said piezoelectric resonators, and a backing material adhered on an opposite surface to the ultrasonic oscillation surface of each of said piezoelectric resonators, characterized in that a cylindrical case (14) is provided which has one end bonded to a peripheral edge of the piezoelectric ceramic (12) and extends in a direction away from the ultrasonic oscillation surfaces, the backing material (15) is cast into and filled in an extending portion of said case (14), and lead wires (13) from electrodes of said piezoelectric resonators (12) extend through the backing material (15).
Claim 3
Dependent Claim
43 words
A transducer according to claim 1, characterized in that said matching layer (24) is formed on the ultrasonic oscillation surfaces through a conductive adhesive layer (26), and ground lead wires are connected to said piezoelectric resonators (22a-22d) through said conductive adhesive layer (26).
Claim 4
Dependent Claim
27 words
A transducer according to claim 1, characterized in that the injection backing material (15) consists of a mixture of an epoxy resin adhesive and a metal powder.
Claim 5
Dependent Claim
18 words
A transducer according to claim 1, characterized in that said matching layer (24) consists of an epoxy resin.
Claim 6
Dependent Claim
23 words
A transducer according to claim 1, characterized in that the piezoelectric ceramic (22) is divided such that said piezoelectric resonators (22a-22d) are ring-shaped.
Claim 7
Dependent Claim
23 words
A transducer according to claim 1, characterized in that the piezoelectric ceramic (22) is divided such that said piezoelectric resonators (22a-22d) are dice-shaped.
Claim 8
Independent Claim
143 words
A method for manufacturing an ultrasonic transducer, comprising the steps of cutting a piezoelectric ceramic (12) into ultrasonic vibrator elements (12a-12d) having a predetermined shape with a laser beam or an ultrasonic beam, connecting lead wires (13) to said elements (12a-12d), and covering said elements (12a-12d) with a backing material (15), characterized by further comprising the steps of: temporarily fixing a piezoelectric ceramic (12) on a metal support (11); dividing the piezoelectric ceramic (12) into ultrasonic resonator elements (12a-12d) of a predetermined shape and connecting lead wires (13) to said elements (12a-12d), respectively; adhering one end of a cylindrical case (14) to a peripheral edge of the piezoelectric ceramic (12) on said metal support (11); forming a backing material (15) on the piezoelectric ceramic (12), such that the lead wires (13) extend through the backing material (15); and removing said metal support (11).
Claim 9
Independent Claim
143 words
A method for manufacturing an ultrasonic transducer, comprising the steps of cutting a piezoelectric ceramic (12) into ultrasonic vibrator elements (12a-12d) having a predetermined shape with a laser beam or an ultrasonic beam, connecting lead wires (13) to said elements (12a-12d), and covering said elements (12a-12d) with a backing material (15), characterized by further comprising the steps of: temporarily fixing a piezoelectric ceramic (12) on a metal support (11); dividing the piezoelectric ceramic (12) into ultrasonic resonator elements (12a-12d) of a predetermined shape and connecting lead wires (13) to said elements (12a-12d), respectively; adhering one end of a cylindrical case (14) to a peripheral edge of the piezoelectric ceramic (12) on said metal support (11); forming a backing material (15) on the piezoelectric ceramic (12), such that the lead wires (13) extend through the backing material (15); and removing said metal support (11).
Claim 10
Dependent Claim
28 words
A method according to claim 7, characterized in that the body of the backing material (15) is formed by cating a backing material into said cylindrical case (14).
Claim 11
Dependent Claim
18 words
A method according to claim 7, characterized in that the body of the backing material (15) is preformed.
Claim 12
Dependent Claim
35 words
A method according to claim 7, further comprising the step of coating a conductive adhesive layer (26) on the ultrasonic oscillation surfaces of said elements (22a-22d) and connecting ground lead wires to said elements (22a-22d).
Claim 13
Dependent Claim
27 words
A method according to claim 7, characterized in that said step of dividing the piezoelectric ceramic (22) into said elements (22a-22d) is performed with a laser beam.
Claim 14
Dependent Claim
27 words
A method according to claim 7, characterized in that said step of dividing the piezoelectric ceramic (22) into said elements (22a-22d) is performed with an ultrasonic beam.
References Cited (Backward Citations)
No citation records indexed.
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