ES225489U - Improved mechanism for the closure and opening of automatic doors. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improved mechanism for the closing and opening of automatic doors, which being of the type comprising a reduction motor mounted next to the door which transmits its rotation to a lower pinion in which meshes a chain extended vertically upwards and tensioned in its upper part by another toothed wheel, said chain being the one that, with the aid of appropriate means of engagement, carries the counterweight to the effectors to motivate, by tilting, the closing and opening of the door, it is characterized by the fact of assembled in its counterweight, a double ratchet device, positionally adjustable, comprising two twin triggers arranged in opposition, articulated at one end and mutually linked by a spring, in which dual ratchet device engages a double regruesamiento on projection of the chain by both sides in order to bring it up or down, the mechanism also comprising an action device the opening of the door latches, operable by the aforementioned double thicknessing, and an automatic pushing device for the closing of the door equally operable by the double thicknessing, being also characteristic that in the opening and closing phases the motor rotates in corresponding reciprocally reciprocal directions, being able to regulate previously and at will the magnitude of its route. (Machine-translation by Google Translate, not legally binding)