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1. WO1998034434 - PIEZOELECTRIC SPRING ELEMENT

Publication Number WO/1998/034434
Publication Date 06.08.1998
International Application No. PCT/CN1998/000017
International Filing Date 27.01.1998
Chapter 2 Demand Filed 03.09.1998
IPC
H04R 17/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
17Piezo-electric transducers; Electrostrictive transducers
CPC
H04R 17/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
17Piezo-electric transducers; Electrostrictive transducers
Applicants
  • BI, Jingjiang [CN]/[CN]
  • JIAO, Bingli [CN]/[CN]
  • ZHANG, Jinduo [CN]/[CN]
Inventors
  • BI, Jingjiang
  • JIAO, Bingli
  • ZHANG, Jinduo
Agents
  • CCPIT PATENT AND TRADEMARK LAW OFFICE
Priority Data
97 2 01121.804.02.1997CN
97 2 21443.722.07.1997CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) PIEZOELECTRIC SPRING ELEMENT
(FR) RESSORT PIEZO-ELECTRIQUE
Abstract
(EN)
This invention discloses a piezoelectric spring element used for inter-converting the mechanical energy and electrical energy. One or more turns of the spring element, which comprises the layer of piezoelectric material, are put into the form of a flat spiral, or spirit, and can be drived in curved mode or twisted mode. This piezoelectric can reduce its natural frequency without increasing its space length, and is suitable for receiving and transmitting audio signals; and can also notably increase the sensitivity of the inter-converting of mechanical energy and electrical energy.
(FR)
L'invention concerne un ressort piézo-électrique utilisé pour interconvertir l'énergie mécanique et l'énergie électrique. Ledit ressort, qui comporte une couche de matériau piézo-électrique, présente une ou plusieurs spires formant une spirale plane ou une hélice, et il peut être actionné en flexion ou en torsion. Ledit élément piézo-électrique peut réduire sa fréquence naturelle sans augmenter de longueur dans l'espace et est utilisé pour recevoir et émettre des signaux audio. Il peut aussi augmenter considérablement la sensibilité à l'interconversion énergie mécanique-énergie électrique.
Also published as
Latest bibliographic data on file with the International Bureau