Linear piezoelectric motor with self locking means
AssigneeNanyang Technological University
InventorsBryan Kok Ann Ngol, Lennie Enk Ng Lim, Wu Lin
Life of this patent
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Abstract
A linear piezoelectric motor which includes a piezoelectric actuator; an actuator container which contains the piezoelectric actuator; an actuator slope which is supported by and slidably connected to an actuator slope support, the actuator slope is able to correspond with a surface portion of the actuator container; an output bar which shares a common axis with the actuator and the actuator container and comes in contact with at least one of the actuator and the actuator container on one end of the output bar and an axial load is applied on an opposite end of the output bar; and at least one output slope which is slidably connected to at least one output support.
Claims15
A linear piezoelectric motor, comprising:
- a piezoelectric actuator;
- an actuator container for containing the piezoelectric actuator, the actuator container having a sloped surface at one end and being slidable along a linear axis;
- an input slope member that includes a sloped surface which cooperates with the sloped surface of the actuator container;
- an output bar, having one end coupled to the actuator container and aligned with the linear axis, having a load applied to the opposite end of the output bar, and having at least one sloped surface;
- and
- an output slope member which cooperates with the sloped surface of the output bar.
A linear piezoelectric motor, comprising:
- a piezoelectric actuator;
- an actuator container which holds and contains the piezoelectric actuator;
- an actuator feeding screw which engages the actuator container and contacts a feeding support;
- an output shaft, which is axially aligned with the piezoelectric actuator and the actuator container;
- an output feeding screw, which engages the output shaft and contacts an output feeding support;
- wherein the movement of the piezoelectric actuator, the actuator feeding screw, and the output feeding screw displace the output shaft.
Dependencies are inferred from the claim text.