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Door closer, particularly for glass doors

  • US 8,677,560 B2
  • Filed: 04/18/2013
  • Issued: 03/25/2014
  • Est. Priority Date: 09/06/2010
  • Status: Active Grant
First Claim
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1. A door closer for a door which is supportable by a stationary support structure, the door being movable between an open door position and a closed door position, the door closer comprising:

  • a box-shaped body anchorable to one of the stationary support structure or the door;

    a pin defining a first longitudinal axis, the pin being anchorable to the other one of the stationary support structure or the door, said pin and said box-shaped body being reciprocally and rotatably coupled to rotate around said first longitudinal axis between the open door position and the closed door position;

    a closing mechanism for automatic return of the door from the open to the closed position;

    a braking mechanism acting on said closing mechanism configured to counteract an action thereof;

    said closing mechanism comprising a first cam element interacting with a first plunger element movable within said box-shaped body between a first compressed end position corresponding to the open door position and a first extended end position corresponding to the closed door position; and

    said braking mechanism comprising a second cam element interacting with a second plunger element movable within said box-shaped body between a second compressed end position, corresponding to the closed door position and a second extended end position, corresponding to the open door position;

    wherein both said first and said second cam elements are unitary with said pin,wherein said first plunger element comprises at least one first pushing head interacting with at least one substantially first countershaped seat of said first cam element, said second plunger element including at least one second pushing head interacting with at least one second substantially countershaped seat of said second cam element,wherein said at least one first and second pushing heads comprise respectively at least one first and second front faces, said at least one first and second countershaped seats comprising respective at least one first and second contact surfaces, said at least one first and second front faces being in contact engagement with said at least one first and second contact surfaces,wherein said pin is interposed between said first and second plunger elements, andwherein said first and second plunger elements are both slidably movable in an operating chamber internal to the box-shaped body along a second axis substantially perpendicular to said first axis, both said at least one first and said second pushing heads being shaped to define respectively at least one first and second planes substantially perpendicular to said first axis.

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