Sensing mechanism for an assisted garage door

摘要

A garage door opening module is disclosed, the module comprises a power unit having a rotatable output drive, an endless transmission drive adapted to transfer movement from the rotatable output drive to a door drive, and a sensor mechanism positioned along the endless transmission drive and adapted to sense a transmission drive slack, the sensor mechanism adapted to stop the power unit when a transmission drive slack displacement threshold is reached. A method for actuating a garage door and a sensor module for preventing movements of an assisted garage door are also disclosed.

主权项

1. A garage door opening module comprising:
a power unit having a rotatable output drive, the power unit being adapted to move a garage door when the power unit is used in conjunction with the garage door; an endless transmission drive adapted to transfer movement from the rotatable output drive to a door drive; a locking mechanism adapted to manually lock the garage door in a closed position, the locking mechanism causing an increased tension in the endless transmission drive when the power unit moves the garage door while the locking mechanism manually locks the garage door in the closed position; and a sensor mechanism positioned along the endless transmission drive and adapted to sense a transmission drive slack, the sensor being in a non-actuated state when the tension of the endless transmission drive is below a transmission drive slack displacement threshold and being actuated when the tension in the endless transmission drive is increased to reach the transmission drive slack displacement threshold due to the power unit moving the garage door while the locking mechanism manually locks the garage door in the closed position, the sensor mechanism stopping a movement of the door drive when in the actuated state.