Device for controlling closing sequence of fire protection door, has piston, threaded bolt and connection piece whose blockade of mobility along slide rail is transferred to blockade of mobility of snap joint, another bolt and hook part

摘要

The device has a movable leaf (1) including a holding part and a slider (3) that are connected by a mechanical transmission ratio. A hydraulic unit, a threaded sleeve and a two-armed lever are held at a slide rail (4) against translatory relative motion in a longitudinal direction. A blockade of mobility of a piston, a threaded bolt and a connection piece along the slide rail in a pivot axis of the leaf is transferred to a blockade of mobility of a snap joint, another bolt and a hook part in the pivot axis of the leaf by the mechanical transmission ratio.