Patent ID: 9353563
Filing Date: 2016-05-31
CPC Classification: E05D,E05F,E05Y,Y10T

Claim Text:
1. A hinge for automatically closing a closing element which is anchored to a stationary support structure, the hinge comprising: a fixed element configured to be fixed to the stationary support structure; a movable element fixable to the closing element, the movable element and the fixed element being mutually coupled so that the closing element rotates around a longitudinal axis between an open position and a closed position, one of the movable element or the fixed element comprising a box-shaped hinge body including a working chamber defining the longitudinal axis, the other one of the movable element and the fixed element including a pivot coaxial to the longitudinal axis; a slider slidably movable within the working chamber between a retracted end position and an extended end position, the pivot and the slider being telescopically coupled to each other such that a rotation of the movable element around the longitudinal axis corresponds to a sliding of the slider along the longitudinal axis and vice versa; and a counteracting elastic member acting on the slider for automatically returning the slider from the retracted end position toward the extended end position, the counteracting elastic member being configured to slidably move along the longitudinal axis between a maximum elongation position, corresponding to the extended end position of the slider, and a minimum elongation position, corresponding to the retracted end position of the slider, wherein the pivot includes a cylindrical portion having a plurality of substantially equal grooves angularly spaced 180° each including a helical portion wound around the longitudinal axis, the grooves being communicating with each other to define a single guide element passing through the cylindrical portion, wherein the slider includes an elongated body with a first end which comprises a pin transversely inserted through the single guide element to slide therein, such to allow a mutual engagement of the cylindrical portion and the elongated body, the elongated body of the slider including a second end slidably moving between a position proximal to the cylindrical portion of the pivot, corresponding to the retracted position of the slider, and a position distal from the cylindrical portion of the pivot, corresponding to the extended position of the slider, the counteracting elastic member being interposed between the cylindrical portion of the pivot and the second end of the slider so that the cylindrical portion is in a position of minimum elongation when the second end is in the retracted end position and in a position of maximum elongation when the slider is in the extended end position, such to promote an automatic closing of the closing element from the open position, and wherein the box-shaped hinge body includes a support portion to be loaded by the pivot, the support portion being configured to separate the box-shaped hinge body into a first area and a second area, the pivot being housed into the first area, the counteracting elastic member being housed in the second area.