Piezoelectric modular motor with stator having two active faces - has both faces excited by transducers having two active faces insulated by coaxial element

The piezoelectric motor has a stator part (1) having two annular parts (4,5) excited by piezoelectric transducers with two active faces (7,6) which are respectively insulated by a coaxial insulation element (9). The rotor (2) has two annular parts (14,16) arranged symmetrically with respect to the m...

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Bibliographische Detailangaben
Hauptverfasser: MINOTTI PATRICE, FROELICHER MICHEL, GONNARD PAUL, EYRAUD LUCIEN
Format: Patent
Sprache:eng ; fre
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Zusammenfassung:The piezoelectric motor has a stator part (1) having two annular parts (4,5) excited by piezoelectric transducers with two active faces (7,6) which are respectively insulated by a coaxial insulation element (9). The rotor (2) has two annular parts (14,16) arranged symmetrically with respect to the median plane (3). The piezoelectric transducers are constituted by a number of parts which are cut out in a film of piezoelectric material. USE/ADVANTAGE - Motor has improved symmetry which optimises piezoelectric effects produced which makes it suitable for use in medical micro-mechanics. La présente invention concerne un moteur piezoélectrique constitué par une partie statorique (1) présentant deux parties annulaires (4, 5) excitées par des transducteurs piezoélectriques à deux faces actives respectivement (7, 6) isolés par une pièce d'isolation coaxiale (9). La partie rotorique (2) présente deux parties annulaires (14, 16) disposées symétriquement par rapport à un plan médian (3). L'invention concerne également un assemblage d'éléments moteurs en série.