| 摘要 |
A lock ( 1 ) comprises at least a bolt ( 7 ) actuated by means of a flexible shape memory element ( 14 ), which can take an extended and a shortened configuration as a result of heating. Constraint means (P, 10, 17 ) cause the arrangement of at least an intermediate portion of the shape memory element ( 13 ), within which portion said element is associated to the bolt ( 7 ); the constraint means (P, 10, 17 ) are in such relative positions that said intermediate portion of the shape memory element ( 14 ) takes a substantially V-shaped arrangement at least when the first controlled element ( 7 ) is in its operating position.
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