Braking device for a movable door leaf and a door closer having such a braking device
AssigneeGeze GmbH
InventorsMatthias Hucker, Erhard Hahn
Life of this patent
Estimating the term…
Abstract
A braking device for a moveable door leaf includes an electrical brake motor operated as a generator. The motor shaft of which is rotatable by a movement of the door leaf and which can be controlled for regulating the closing speed of the door leaf by an electronic evaluation and control unit, which is at least partially provided with electrical energy by an electric motor operated as a generator and/or by an additional generator unit. The electronic evaluation and control unit is operable in a sleep mode and is cyclically displaceable into a waking state depending on the closing speed of the door leaf. A door closer with a mechanical energy storage and a braking device is also disclosed.
Claims10
A braking device (12) for a moveable door leaf (18), comprising:
- an electrical brake motor (20) operated as a generator, the electrical brake motor (20) having a motor shaft (22) rotatable by a movement of the door leaf (18);
- and
- an electronic evaluation and control unit (28) operatively coupled to the motor shaft (22), the electronic evaluation and control unit (28) configured to control the motor shaft (22) for regulating a closing speed of the door leaf (18), the electronic evaluation and control unit (28) at least partially provided with electrical energy by the brake motor (20) or by an additional generator unit, the electronic evaluation and control unit (28) operable in a sleep mode and a waking state, and, wherein, upon detection of a closing movement of the door leaf, the electronic evaluation and control unit (28) is cyclically displaceable between the sleep mode and the waking state depending on a rotational speed of the motor shaft (22) corresponding to the closing speed of the door leaf (18), and the electronic evaluation and control unit (28) is cyclically displaced between the sleep mode and the waking state at a first frequency during a first closing movement of the door leaf (18) having a first closing speed and the electronic evaluation and control unit (28) is cyclically displaced between the sleep mode and the waking state at a second frequency greater than the first frequency during a second closing movement of the door leaf (18) having a second closing speed greater than the first closing speed.
Dependencies are inferred from the claim text.