Abstract:
A snap-acting hinge (1) with damped closure and opening angle of more than 90°, comprising a first articulated quadrilateral (2) and a second articulated quadrilateral (3), which have a first lever and a second lever (4, 5) in common and are provided with respective base elements constituted by a plate (6) for coupling to a fixed element (100) and by a plate (8) for fixing to a movable element (101), the hinge (1) being movable between an open configuration and a closed configuration, in which the fixing plate (8) has different arrangements with respect to the coupling plate (6) which are angularly spaced apart by an angle of more than 90°. The hinge further comprises first elastic means (12) for holding the open configuration which are associated with the first quadrilateral (2), second elastic means (13) for holding the closed configuration which are associated with the second quadrilateral (3) and damping means (14) that act in the transition from the open configuration to the closed configuration and which are interposed between the first lever (4) and the fixing plate (8).
Abstract:
A snap hinge (1) with damped closure, comprising a first articulated quadrilateral (2) and a second articulated quadrilateral (3) which share a first lever (4) and a second lever (5) and are provided respectively with a plate (6) for coupling to a first element (101) and with a plate (7) for fixing to a second element (102), said hinge (1) being movable alternately between an open configuration and a closed configuration, wherein said plates (6, 7) have different arrangements with respect to each other, the first quadrilateral (2) comprising a second arm (18) which is articulated to the coupling plate (6) and to an end of the second lever (5), the second quadrilateral (3) comprising a first arm (9) which is articulated to the fixing plate (7) and to an end of the first lever (4), said hinge (1) also comprising at least one damping element (8) that is interposed between said second quadrilateral (3) and said fixing plate (7) for damped transition from said open configuration to said closed configuration and said damping element (8) comprises a cylindrical main body (10) in which a stem (11) can slide axially, characterized in that said main body (10) has a first end (10a) which is associated, so that it can rotate, with said fixing plate (7) and said stem (11) is provided with a second end (11a) that can move with respect to said first end (10a) and is associated, so that it can rotate, with said first arm (9), the position of the stem (11) with respect to the body (10) defining various positions of the damping element (8), which in particular can move between a compression position, in which said ends (10a, 11a) of the main body (10) and of the stem (11) are mutually closer and the hinge (1) is in the open configuration, and an extended position, in which said ends (10a, 11a) of the main body (10) and of the stem (11) are mutually spaced and the hinge (1) is in the closed configuration.
Abstract:
An adjustable snap-acting hinge (1a, 1b), comprising a first articulated quadrilateral (2) and a second articulated quadrilateral (3), which can move on a working plane and share a first lever (4) and a second lever (5) and are provided respectively with a plate (6) for coupling to a first element (101) and with a plate (7) for fixing to a second element (102); further comprising elastic means (8) provided with two opposite ends that can move toward or away from each other and act between a point of the first lever (4) and a contrast element (9) associated with the coupling plate (6); the contrast element (9) can be arranged in at least one position for use, which lies between a first position in which the contrast element (9) is arranged at a maximum distance from the point of the first lever (4), and a second position in which the contrast element (9) is arranged at a minimum distance from the point of the first lever (4) in order to vary the preloading of the elastic means (8); the hinge (1a, 1b) also comprises locking means (10) for keeping the contrast element (9) in the position for use.