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.

The present invention pertains to the technological sector of household items and refers, more specifically, to a passive safety device applied to doors in order to prevent them, when closing unexpectedly, from causing accidents to body parts of humans or animals. Since the safety devices applied for this purpose present the obstacle of being removed or disarmed when the user wishes to close the door (7), the present invention presents a passive combination (1) endowed with rod (2) and fastening element (4) that should be attached to the handle (5) present on the door (7) in such a way as to move together with it (5). This causes the rod (2) endowed or not with a stop (3) to stand between the door (7) and the frame (6) passively in order to prevent the unexpected closing of the door and preserve the security space (8) preventing body parts of people or animals from being crushed.

A braking device for a moveable door leaf comprises an electrical brake motor being 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 means of an electronic evaluation and control unit, which is at least partially providable with electrical energy by an electric motor being operated as a generator, particularly the brake motor, and/or by means of an additional generator unit. The electronic evaluation and control unit is thus operable in a sleep mode and is cyclically displaceable into a waking state depending on the closing speed of the door leaf, wherein the wake-up frequency with which the electronic evaluation and control unit is cyclically awakened during a respective closing movement of the door leaf is less at relatively lower closing speeds of the door leaf than at relatively greater closing speeds of the door leaf. A door closer with a mechanical energy storage and a correspondingly designed braking device is also disclosed.

A door operator comprises a rotary shaft, a chain disk for rotating the rotary shaft, and a locking mechanism for locking the rotary shaft. The locking mechanism comprises a bidirectional rotary block, a plurality of push pins and anti-rotation posts. When the chain disk rotates, the push pins urge the bidirectional rotary block to rotate the rotary shaft, and when the rotary shaft rotates, the of anti-rotation posts lock the bidirectional rotary block, and preclude the rotary shaft from rotating.

A door operator comprises a rotary shaft, a chain disk for rotating the rotary shaft, and a locking mechanism for locking the rotary shaft. The locking mechanism comprises a bidirectional rotary block, a plurality of push pins and anti-rotation posts. When the chain disk rotates, the push pins urge the bidirectional rotary block to rotate the rotary shaft, and when the rotary shaft rotates, the of anti-rotation posts lock the bidirectional rotary block, and preclude the rotary shaft from rotating.

A guard for and method of preventing household doors from slamming shut when excessive force is used while closing is disclosed. The guard includes a padded body and an attachment mechanism for hanging the guard from a door knob in a manner that allows the guard to swing freely with respect to the door knob. In some embodiments, the guard can include certain electronics to indicate and/or store door slam events.

A door operator comprises a rotary shaft, a chain disk for rotating the rotary shaft, and a locking mechanism for locking the rotary shaft. The locking mechanism comprises a bidirectional rotary block, a plurality of push pins and anti-rotation posts. When the chain disk rotates, the push pins urge the bidirectional rotary block to rotate the rotary shaft, and when the rotary shaft rotates, the of anti-rotation posts lock the bidirectional rotary block, and preclude the rotary shaft from rotating.