摘要:
Provided is a piezoelectric driving device 100 for a motor 101 including: a vibrating plate 40 which includes a fixed portion 42 and a vibrator portion 46 in which a piezoelectric element 50 is provided and which is supported by the fixed portion; and a contact portion 60 which comes into contact with a driven body 2 and transmits motion of the vibrating plate to the driven body, in which the fixed portion, the vibrator portion, and the contact portion are provided along an X direction in this order, when seen in a Y direction, when two directions parallel to a main surface of the vibrating plate and orthogonal to each other are set as the X direction and the Y direction and a direction orthogonal to the main surface of the vibrating plate is set as a Z direction.
摘要:
An ultrasonic motor comprising a rotor (18) shaped at least partially spherically and two actuators (2, 2') each comprising an element made from a piezoelectric material in the shape of a plate comprising at least one contact edge (4, 4') in contact with the rotor (18), said actuators (2, 2') also comprising, on one of the faces of same, electrodes intended to bias piezoelectric materials in a bending mode and in a longitudinal mode. The contact edges (4, 4') are concave and are formed by an arc of a circle of which the radius substantially corresponds to the radius of the surface of the rotor (18), said arc of a circle extending angularly according to a predetermined angle such that the bending mode and the longitudinal mode in which the piezoelectric material is biased are at the same frequency.
摘要:
L'invention est relative à un dispositif d'actionnement comprenant au moins un moteur piézo-électrique et une pièce mobile, dans lequel ledit moteur piézo-électrique est formé d'au moins un élément piézo-électrique associé à des moyens d'alimentation en courant électrique permettant d'induire des déformations oscillatoires dudit élément piézo-électrique, et dans lequel la pièce mobile comprend au moins une micro crémaillère destinée à permettre la transmission à la pièce mobile de la force motrice engendrée par les déformations oscillatoires de l'élément piézo-électrique.
摘要:
An ultrasonic actuator is capable of moving one-dimensionally or two-dimensionally on a flat plane, and can easily be assembled in a cylindrical portion such as a lens barrel of a camera. This ultrasonic actuator comprises a frame-like elastic member having an outer form in a regular square, and electro-mechanical converting elements which are joined to frame side portions of the elastic member for generating vibrations in a longitudinal vibration mode and a bending vibration mode in response to a drive signal so as to generate elliptic motion at predetermined positions in the frame side portions by a synthetic motion of the above-mentioned vibrations. The ultrasonic actuator can translate one-dimensionally or two-dimensionally on the flat plane upon application of a driving voltage onto each group of the opposed electro-mechanical converting elements.
摘要:
A linear motor is arranged to have two legs each of which have a different resonance frequency, when one of the legs is induced to resonate by applying a vibration having a frequency which corresponds to the resonance frequency of one of the legs, to the chassis of the motor, the motor proceeds in a first direction, while when a vibration having a second frequency which corresponds to the resonance frequency of the other leg is applied, the motor is propelled linearly in the other direction.
摘要:
A piezoelectric motor is disclosed, which comprises a slider including a tabular vibrator (1) in which a standing wave is excited, and a plurality of piezoelectric actuators (2, 3) securely mounted at the parts of the lower surface of the vibrator (1) corresponding to the loop and node of the standing wave and adapted to be deformed in phase with the standing wave.
摘要:
A linear motor is arranged to have two legs each of which have a different resonance frequency, when one of the legs is induced to resonate by applying a vibration having a frequency which corresponds to the resonance frequency of one of the legs, to the chassis of the motor, the motor proceeds in a first direction, while when a vibration having a second frequency which corresponds to the resonance frequency of the other leg is applied, the motor is propelled linearly in the other direction.
摘要:
Dosiervorrichtung (1) für ein elektrisch isolierendes flüssiges oder gasförmiges Medium (2), umfassend eine Düse (3) mit einer Düsennadel (4), wobei die Durchflussrate des Mediums (2) durch die Düse (3) über eine Linearbewegung der Düsennadel (4) steuerbar ist, wobei als Aktor für die Linearbewegung der Düsennadel (4) • mindestens zwei entlang der Längsachse (4a) der Düsennadel (4) versetzte Piezoelemente (5, 6; 5a, 6a), die zu einer linearen, auf die Mantelfläche (4b) der Düsennadel (4) gerichteten, Längenänderung anregbar sind, wobei durch diese Längenänderung jeweils ein Reibkontakt zwischen den Piezoelementen (5, 6; 5a, 6a) und der Düsennadel (4) herstellbar bzw. aufhebbar ist und wobei die Piezoelemente (5, 6; 5a, 6a) über einen parallel zur Düsennadel (4) verlaufenden Biegebalken (8; 8a) miteinander gekoppelt sind, und/oder • mindestens ein Piezoelement (7; 7a), das zu einer Kombination aus einer Längenausdehnung parallel zur Längsachse (4a) der Düsennadel (4) und einer Biegeschwingung anregbar ist, so dass durch die Biegeschwingung ein intermittierender Reibkontakt zwischen dem Piezoelement (7; 7a) und der Düsennadel (4) herstellbar ist,