Braking device for a movable door leaf and door closer having such a braking device
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United States of America Patent
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Nov 29, 2022
Grant Date -
Jul 18, 2019
app pub date -
Jan 2, 2019
filing date -
Jan 17, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A braking device for a movable door leaf comprises an electric braking motor to damp movement of the door leaf; a motor shaft coupleable with an axis of rotation of the door leaf; and a control unit to control the electric braking motor. A generator provides power to the control unit. A continuously variable transmission unit between the axis of rotation of the door leaf and either the motor shaft of the electric braking motor or the separate generator is controlled by a mechanical control such that the motor shaft of the electric braking motor and/or the separate generator, can be driven at a rotational speed independent of the rotational speed of the rotational axle of the door leaf. Also included is a door closer, having a rotatable door closer axis, coupleable with a door leaf, cooperating with a mechanical energy storage device, and a correspondingly designed braking device.
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