Shape memory alloy actuator subassembly with magnetic elements and fluidic valve incorporating the same

An actuator subassembly, comprising:

• a first and second stationary surface;
• a first and second movable element;
• a shape memory alloy wire fixed onto said first stationary surface and connected to said first movable element to move it from a rest position to an operative position;
• and
• a biasing means connected to one of said stationary surfaces and to one of said movable elements so as to act in opposition to the driving force exerted by said shape memory alloy wire,
• wherein the first and second movable elements are connected by a magnetic coupling via magnetic responsive elements comprising one or more sets of permanent magnets on one of the movable elements and one or more corresponding magnetic responsive elements on the other movable element, so that a displacement of the first movable element upon actuation of the shape memory alloy wire results also in a displacement of the second movable element from a rest position to an operative position, said magnetic coupling also providing for the return of both movable elements to their rest positions by the biasing means upon de-actuation of the shape memory alloy wire,
• wherein the second stationary surface is interposed between the first and second movable elements separating them, and
• wherein both extremities of the shape memory alloy wire are fixed to the first stationary surface and its median portion is connected to the first movable element in a V-shape or U-shape configuration.