TRIGGER UNIT FOR ACTUATING AN ELEVATOR BRAKE DEVICE

The invention relates to a trigger unit (1) for actuating an elevator brake device (23), comprising a trigger main part (2) which can be installed on an elevator car, a trigger (20), and a coupling element (22), via which the trigger unit (1) can be connected to an elevator brake device (23). The trigger unit (1) is preferably designed as an assembly which is completely separate from the aforementioned elevator brake device (23) and which is connected to the elevator brake device (23) solely via the coupling element (22) when installed in the intended manner. The trigger unit (1) comprises a trigger clamping surface (7) which can be actuated by a trigger (20) and which, after being triggered, is moved together with a clamping roller (5) transversely to the elevator travel direction in the direction of the paired elevator guide rail (6) until the clamping roller (5) is clamped between the trigger clamping surface (7) and the elevator rail (6) and rolls between the trigger clamping surface (7) and the elevator rail (6). The invention is characterized in that at least one eccentric roller (9) is provided preferably directly next to or coaxially to the clamping roller (5), said eccentric roller having an eccentric design and being mounted so as to come into contact with the guiding rail (6) rather than with the clamping roller (5) during the course of the triggering process and so as to release the further movement of the clamping roller (5) towards the guide rail (6) only after the eccentric roller rolls on the guide rail (6).