Door closer, particularly for glass doors
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
A door closer for doors, particularly glass doors, which are supported by a stationary support structure and are movable between an open door position and a closed door position. The door closer comprises a box-shaped body and a pin reciprocally coupled to rotate around a first axis between the open door position and the closed door position. A closing mechanism causes the door to return automatically and a braking mechanism counteracts the action of the closing mechanism. First and second cam elements are unitary with the pin and interposed between a first and second plunger elements acting thereon.
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Citations
19 Claims
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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:
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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, and wherein 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. 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:
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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 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, and 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 pin is interposed between said first and second plunger elements, said first and second plunger elements being both slidably movable in a operating chamber internal to the box-shaped body along a second axis substantially perpendicular to said first axis, wherein said operating chamber comprises a working fluid, said first plunger element comprising a substantially cylindrical first back portion and a first front portion including said at least one first pushing head, said second plunger element comprising a substantially cylindrical second back portion and a second front portion which include said at least one second pushing head, wherein said operating chamber is separated into a first, a second and a third adjacent variable volume compartments in reciprocal fluidic communication, the first variable volume compartment including said first plunger element, the third variable volume compartment including said second plunger element, the second variable volume compartment including said pin, and wherein the door closer further comprises a flow control system for controlling the flow of the working fluid designed to allow the flow thereof from said first compartment to said third compartment through said second compartment upon the opening of the door and to allow a backflow thereof from said third compartment to said first compartment through said second compartment upon the closing of the door. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification