Electromechanical restraint for door with automatic door closer

摘要

The electromechanical restraint uses an electromagnet (2) having an operating rod (14) attached to its armature, cooperating with two pivoted retaining claws (6) acting on a sliding block (8) of the door closer, to allow the door to be held in an open position. The retaining force provided by the restraint is continuously adjustable via a setting nut (4) and a spring (5) associated with a coupling (17,30) between the electromagnet and the operating rod.