US 9,810,012 B2
Low-bulkiness hydraulic hinge
Luciano Bacchetti, Nave (IT)
Assigned to IN & TEC S.R.L., Brescia (IT)
Appl. No. 15/113,421
Filed by IN & TEC S.R.L., Brescia (IT)
PCT Filed Jan. 27, 2015, PCT No. PCT/IB2015/050603
§ 371(c)(1), (2) Date Jul. 21, 2016,
PCT Pub. No. WO2015/111027, PCT Pub. Date Jul. 30, 2015.
Claims priority of application No. VI2014A0021 (IT), filed on Jan. 27, 2014.
Prior Publication US 2017/0030125 A1, Feb. 2, 2017
Int. Cl. E05D 7/08 (2006.01); E05F 3/10 (2006.01); E05F 3/20 (2006.01)
CPC E05F 3/104 (2013.01) [E05F 3/10 (2013.01); E05F 3/20 (2013.01); E05Y 2201/638 (2013.01); E05Y 2800/268 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A low-bulkiness hydraulic hinge for rotatably moving and controlling a closing element anchored to a stationary support structure between an open position and a closed position, the hinge comprising:
a hinge body anchorable to one of the stationary support structure or the closing element, said hinge body internally comprising a working chamber with a front wall and a bottom wall faced thereto;
a pivot defining a first longitudinal axis anchorable to the other one of the stationary support structure and the closing element, said pivot and said hinge body being coupled to each other to rotate around said first axis or an axis parallel thereto between the open position and the closed position of the closing element;
a slider slidably movable within said working chamber along a second axis between a position distal from said bottom wall and a position proximal thereto, said pivot and said slider being reciprocally coupled so that a rotation of the closing element around said first axis corresponds to an at least partial sliding of said slider along said second axis, said slider including an axial blind hole;
a hydraulic damping system acting on said slider to hydraulically damp a movement of the closing element during opening and/or closing movement, said hydraulic damping system including a working fluid entirely contained in a hydraulic circuit internal to said slider;
a separation element fixed on said hinge body and inserted within said axial blind hole to remain faced to a bottom wall thereto, the slider sliding along said second axis with respect to said separation element;
a support rod defining said second axis having a first end reciprocally connected to the bottom wall of said working chamber and a second end inserted within said blind hole to connect to said separation element; and
a counteracting elastic member to remain interposed between said bottom wall of said working chamber and said slider to act on said slider to return it from the proximal position to the distal position,
wherein said hydraulic circuit includes the blind hole of said slider, said separation element dividing the slider in at least one first and one second variable volume compartments fluidly communicating with each other, said at least one first and one second variable volume compartments being configured to have at the distal position of said slider respectively a maximum and a minimum volume, and
wherein said separation element comprises at least one pass-through opening to put in fluid communication said at least one first variable volume compartment and said at least one second variable volume compartment and a valve including an obstructing element interacting with said opening to enable a controlled passage of the working fluid between said at least one first compartment and at least one second compartment.