| 摘要 |
<p>A double action elastic hinge (10) for spectacles, which comprises, associated with the temple (12, 112) and the lug (14) of the spectacles, two articulation elements (16, 116, 216; 18) reciprocally hinged to allow the articulation of the temple (12, 212) with respect to the lug (14) between the open and closed positions, of which a first articulation element (16, 116, 216) comprises a box-like body (22, 122, 222, 322) which has a first front surface (34, 134, 234, 334) and inside which an elastic slider (26) is slidingly housed, and a second articulation element (18) constrained to the elastic slider (26) and which has a second shaped front surface (36) with a cam region (44, 144) which is able to slide on said first front surface (34, 134, 234, 334). An intermediate condition is provided in the movement of the temple (12, 112) and lug (14) in which the cam region (44, 144) determines a maximum emergence (A2) of the elastic slider (26) from the box-like body (22, 122, 222, 322). The first front surface (34, 134, 234, 334) has a convex shaped profile with a protruding region (42, 42a, 142, 242, 342) toward the outside of the box-like body (26). The second front region (36) is shaped in a manner mating with the first front surface (34, 134, 234, 334) so as to define a concavity (48) delimited on one side by the cam region (44, 144) and inside which the protruding region (42, 42a, 142, 242, 342) is located in the stable condition in which the temple (12, 212) is open with respect to the lug (14).</p> |
