Patent ID: 11889764
Assignee: MICROJET TECHNOLOGY CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  H | IPC H

Claim 0:
1. A piezoelectric actuator, comprising:
a suspension plate having a square shape and with a central portion and a periphery portion, wherein the suspension plate is permitted to undergo a curvy vibration from the central portion to the periphery portion, wherein the length of the suspension plate is in a range between 9 mm and 10 mm, and the thickness of the suspension plate is 0.27 mm;
an outer frame arranged around the suspension plate;
a plurality of brackets, wherein each of the plurality of brackets has two ends, a first end is perpendicular to and connected with the suspension plate, and a second end is perpendicular to and connected with the outer frame for elastically supporting the suspension plate, and each bracket has a length of 1.30 mm, and a width in a range of 0.45 mm; and
a piezoelectric ceramic plate having a square shape, wherein a length of a side of the piezoelectric ceramic plate is equal to or less than a length of a side of the suspension plate, and the piezoelectric ceramic plate is attached on a first surface of the suspension plate to drive the suspension plate to undergo the curvy vibration when a voltage is applied to the piezoelectric ceramic plate.