| 摘要 |
<p>A lock (1) with double keyhole (2, 3), particularly for the security of residential uses, comprising a box-like containment body (4) provided with suitable lateral openings (5), for the passage of at least one spring latch (6) and of at least one bolt (7), with a plurality of substantially laminar members (8) that are functionally associated with a first cylinder, operated by a respective key and accommodated in a first keyhole (2), with a rotatable element (9), for the engagement of a handle, which is associated with the at least one spring latch (6) by means of lever systems and is designed for the movement of the spring latch (6), and with a latch (10) that is functionally associated with a second cylinder, which is operated by a respective key and is accommodated in a second keyhole (3), and comprising a plate (12) that performs a translational motion and is functionally associated in an upper region with the rotatable element (9) and in a lower region with a laminar member (8) that is jointly connected to the bolts (7) by means of a carousel (13) that is pivoted, in another point, to the box-like body (4). The arrangement of the latch (10) in a preset positioning configuration, set by the second cylinder, produces a misalignment between an abutment member (14) of the rotatable element (9) on the translating plate (12) and the plate (12) itself, with consequent mutual uncoupling thereof; the rotation of the rotatable element (9), consequent to the rotation of the handle, causes the retraction of the at least one spring latch (6) and of the at least one bolt (7), unless the latch (10) is in the preset positioning configuration, in which the rotation determines only the retraction of the at least one spring latch (6).</p> |
