ELECTRICALLY-CONTROLLED ACTUATOR DEVICE, AND WASHING AGENTS DISPENSING DEVICE COMPRISING SUCH AN ACTUATOR DEVICE
The actuator device (1) comprises: - a stationary support structure (2, 3), - a movable member (5) displaceable relative to said structure (2, 3), and - a wire (SMW) of a shape-memory material, which extends in the structure (2, 3) between two anchoring elements (15, 16) and the movable member (5, 6...
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Zusammenfassung: | The actuator device (1) comprises: - a stationary support structure (2, 3), - a movable member (5) displaceable relative to said structure (2, 3), and - a wire (SMW) of a shape-memory material, which extends in the structure (2, 3) between two anchoring elements (15, 16) and the movable member (5, 6) such that the wire (SMW) shortens when an electric current flows therethrough, causing a displacement of the movable member (5, 6) against the action of a contrast member (8). In the structure (2, 3) there are 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 the corresponding anchoring element (15, 16) of the wire (SMW), such as to cause a deflection of the wire (SMW) between each anchoring element (15, 16) and the movable member (5, 6).
L'invention concerne un dispositif actionneur (1) qui comprend : - une structure porteuse stationnaire (2, 3), - un élément mobile (5) pouvant se déplacer par rapport à ladite structure (2, 3) et - un fil (SMW) fait dans un matériau à mémoire de forme qui s'étend dans la structure (2, 3) entre deux éléments d'ancrage (15, 16) et l'élément mobile (5, 6), si bien que le fil (SMW) se raccourcit lorsqu'il est parcouru par un courant, ce qui commande un déplacement de l'élément mobile (5, 6) contre l'effet d'un élément de rappel (8). Il est prévu dans la structure (2, 3) deux éléments de renvoi (21, 22 ; 23, 24) disposés sur la longueur du fil à mémoire de forme (SMW), chacun étant disposé entre l'élément mobile (5, 6) et l'élément d'ancrage (15, 16) correspondant du fil (SMW) afin de provoquer un renvoi du fil (SMW) entre chacun des points d'ancrage (15, 16) et l'élément mobile (5, 6). |
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