US 12,085,064 B2
Actuator subassembly controlled by shape memory alloy wires, system comprising a plurality of such subassemblies and control method for such system
Markus Köpfer, Stoedtlen-Regelsweiler (DE)
Assigned to ACTUATOR SOLUTIONS GMBH, Gunzenhausen (DE)
Appl. No. 18/681,898
Filed by ACTUATOR SOLUTIONS GMBH, Gunzenhausen (DE)
PCT Filed Aug. 12, 2022, PCT No. PCT/EP2022/072691
§ 371(c)(1), (2) Date Feb. 7, 2024,
PCT Pub. No. WO2023/017158, PCT Pub. Date Feb. 16, 2023.
Claims priority of application No. 102021000021887 (IT), filed on Aug. 13, 2021.
Prior Publication US 2024/0263622 A1, Aug. 8, 2024
Int. Cl. F03G 7/06 (2006.01)
CPC F03G 7/06143 (2021.08) 14 Claims
OG exemplary drawing
 
1. An actuator subassembly comprising:
a quadrangular frame, preferably square-shaped, with four corner connectors,
a movable element placed in correspondence of the center of said quadrangular frame and connected thereto by elastically deformable arms,
a first shape memory alloy wire fixed onto two of said corner connectors located at opposing positions, and
a second shape memory alloy wire fixed onto the other two opposing corner connectors, such that two wire planes, each containing a shape memory alloy wire with its relevant corner connectors, intersect at an angle of 90°±20°,
said first shape memory alloy wire contacting a first surface of said movable element and said second shape memory alloy wire contacting a second surface of the movable element, said second surface being opposed to said first surface such that the two shape memory alloy wires are arranged in an antagonistic configuration in which they exert a force in opposite directions on the movable element.