Electrically-controlled actuator device, and washing agents dispensing device comprising such an actuator device

Electrically-controllable actuator device (1) comprising

• a support structure (2, 3) which is stationary in the operation,
• a movable member (5, 6) displaceable relative to said structure (2, 3), and
• a wire (SMW) made of a shape-memory wire, which extends in said structure (2, 3) between the movable member (5, 6) and electric connection members (12, 13) carried by said support structure (2, 3), such that said wire (SMW) shortens when an electric current flows therethrough, causing a displacement of the movable member (5, 6) against the action of contrast means (8);
• respective anchoring elements (15, 16) being fastened to end portions of the shape-memory wire (SMW) and being retained in the support structure (2, 3);
• in said structure (2, 3) there being provided two deflection members (21, 22;
• 23, 24) disposed along the path of the shape-memory wire (SMW), each one between the movable member (5, 6) and a corresponding anchoring element (15, 16) of the wire (SMW), such as to cause a deflection of said wire (SMW) between each anchoring element (15, 16) and the movable member (5, 6), so that the shape-memory wire (SMW) follows an essentially M-shaped path;
• the actuator device (1) being characterised in that said electric connection members (12, 13) are carried by a circuit board (11), which is disposed in said support structure (2, 3) and to which the ends of the shape-memory wire (SMW) are connected, in that said anchoring elements (15, 16) are shaped like disks, inserted into respective retaining seats (19, 20) predisposed in said support structure (2, 3), and in that between said anchoring elements (15, 16) and the circuit board (11) loose end portions of said shape-memory wire (SMW) extend.