Patent ID: 8898860
Filing Date: 2014-12-02
Classification: E05D,E05F,E05Y,Y10T

Abstract:
1. A hinge device for a closing element which is anchored to a stationary support structure, comprising: a fixed element fixable to the stationary support structure; a movable element fixable to the closing element, said movable element and said fixed element being mutually coupled to rotate around a first longitudinal axis between an open position and a closed position; at least one slider slidably movable along said first axis between a compressed end position, corresponding to one of the closed or the open position of the movable element, and an extended end position, corresponding to the other of the closed or the open position of the movable element; and a counteracting elastic member acting on said at least one slider for an automatic returning thereof from one of said compressed and extended end positions toward the other one of said compressed and extended end positions, said counteracting elastic member being configured to slidably move along said first axis between maximum and minimum elongation positions, wherein one of said movable element or said fixed element comprises a generally box-shaped hinge body including at least one working chamber defining said first longitudinal axis to slidably house said at least one slider, the other one of said movable element or said fixed element including a pivot defining said first axis, said pivot and said at least one slider being mutually coupled in such a manner that the rotation of the movable element around said first axis corresponds to the sliding of the at least one slider along the same first axis and vice-versa, said pivot and said at least one slider being telescopically coupled each other, said pivot including a tubular body for internally housing at least one portion of said at least one slider, wherein said pivot includes a cylindrical portion having at least one pair of substantially equal grooves angularly spaced of 180° each including at least one helical portion wound around said first axis, said grooves being communicating with each other to define a single guide element passing through said cylindrical portion, wherein said slider includes an elongated body with at least one first end which comprises a first pin defining a second axis substantially perpendicular to said first axis, said first pin being inserted through said single guide element to slide therein, in such a manner to allow a mutual engagement of said cylindrical portion and elongated body, said elongated body of said at least one slider including a second end slidably moving between a position proximal to said cylindrical portion of said pivot, corresponding to the compressed position of said at least one slider, and a position distal from said cylindrical portion of said pivot, corresponding to the extended position of the slider, said counteracting elastic means being interposed between said cylindrical portion of said pivot and said second end of said at least one slider so that the former are in the position of maximum elongation when the latter is in the extended end position, wherein said tubular body of said pivot includes said single guide element, said at least one portion of said at least one slider including said first end reciprocally coupled with said single guide element, wherein said at least one slider includes a plunger element movable into said at least one working chamber along said first axis, said at least one working chamber including a working fluid acting on said plunger element to hydraulically counteract an action thereof, said plunger element including a pushing head configured to separate said at least one working chamber into at least one first and second variable volume compartments fluidly communicating with each other, wherein said pushing head of the plunger element includes a passing-through opening to put into fluidic communication said first and said second variable volume compartments and a valve element interacting with said opening to allow a passage of the working fluid between said first compartment and said second compartment during one of the opening or closing of the closing element and to prevent a backflow thereof during the other one of the opening or the closing of the same closing element, a hydraulic circuit being provided for the controlled backflow of said working fluid between said first compartment and said second compartment during the other of the opening and the closing of the same closing element, wherein said plunger element is tightly inserted into said at least one working chamber, said hinge body including at least partially said hydraulic circuit, said hydraulic circuit having at least one opening for the working fluid which is in said second compartment and at least one first opening and a second opening in said first compartment, said plunger element tightly housed in said at least one working chamber including a cylindrical rear portion unitary sliding therewith, said cylindrical rear portion of said plunger element being in a spaced relationship with said first and second opening of said circuit such as to remain fluidly uncoupled from said first opening during an entire stroke of said plunger element and such to remain fluidly coupled with said second outlet for an initial part of said stroke and to be fluidly uncoupled therefrom for a final second part of said stroke, so as to impart a latch action to the closing element toward the closed position when the movable element is in the proximity of the fixed element, and wherein said hinge body has at least one first adjustment screw having a first end interacting with said first outlet of said hydraulic circuit and a second end operable by a user from the outside to adjust the flow speed of said working fluid from said second compartment to said first compartment during the closing of the closing element, said hinge body further having a second adjustment screw having a first end interacting with said second outlet of said hydraulic circuit and a second end operable by a user from the outside to adjust a force by which the closing element latches toward the closed position.