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1. WO2000038309 - PIEZOELECTRIC ACTUATOR, TIME PIECE, AND PORTABLE DEVICE

Publication Number WO/2000/038309
Publication Date 29.06.2000
International Application No. PCT/JP1999/004877
International Filing Date 08.09.1999
IPC
H01L 41/09 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive elements
09with electrical input and mechanical output
CPC
H01L 41/0913
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive devices
09with electrical input and mechanical output ; , e.g. actuators, vibrators
0906using longitudinal or thickness displacement combined with bending, shear or torsion displacement
0913with polygonal or rectangular shape
H02N 2/004
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
2Electric machines in general using piezo-electric effect, electrostriction or magnetostriction
0005producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
001Driving devices, e.g. vibrators
003using longitudinal or radial modes combined with bending modes
004Rectangular vibrators
H02N 2/103
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
2Electric machines in general using piezo-electric effect, electrostriction or magnetostriction
10producing rotary motion, e.g. rotary motors
103by pressing one or more vibrators against the rotor
Applicants
  • SEIKO EPSON CORPORATION [JP]/[JP] (AllExceptUS)
  • MIYAZAWA, Osamu [JP]/[JP] (UsOnly)
  • HASHIMOTO, Yasuharu [JP]/[JP] (UsOnly)
  • FUNASAKA, Tsukasa [JP]/[JP] (UsOnly)
  • FURUHATA, Makoto [JP]/[JP] (UsOnly)
Inventors
  • MIYAZAWA, Osamu
  • HASHIMOTO, Yasuharu
  • FUNASAKA, Tsukasa
  • FURUHATA, Makoto
Agents
  • KAWASAKI, Kenji
Priority Data
10/36354321.12.1998JP
10/36354621.12.1998JP
10/36355021.12.1998JP
11/25022503.09.1999JP
11/6915815.03.1999JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) PIEZOELECTRIC ACTUATOR, TIME PIECE, AND PORTABLE DEVICE
(FR) ACTIONNEUR PIEZO-ELECTRIQUE, COMPTEUR DE TEMPS ET DISPOSITIF PORTABLE
Abstract
(EN)
A vibration board (10) composed of a rectangular laminate of a piezoelectric element and a reinforcement member is supported on a base by means of a support (11). The support (11) elastically urges the vibration board toward a rotor (100) so that a projection (36) provided on the vibration board (10) may come into contact with the periphery of the rotor (100). When the vibration board (10) is vibrated to the right and left by the application of voltage from a driver circuit (not shown), the rotor (100) rotates clockwise with the displacement of the projection (36).
(FR)
L'invention concerne une plaque vibrante (10) constituée d'un stratifié rectangulaire d'un élément piézo-électrique et d'un élément de renforcement, et posée sur un socle par un support (11). Le support (11) exerce une pression élastique sur la plaque vibrante pour la pousser vers un rotor (100), de sorte qu'une projection (36) ménagée sur la plaque vibrante (10) puisse venir au contact de la périphérie du rotor (100). Lorsque la plaque vibrante (10) est vibré de droite à gauche par application d'une tension délivrée par un circuit de commande (non présenté), le rotor (100) effectue une rotation dans le sens des aiguilles d'une montre suivant en cela le mouvement de la projection (36).
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