Door lock with emergency unlocking arrangement

摘要

The lock for the shaft door of a machine or a train door has a housing (1) with a bolt (2). The housing contains a force-openable safety switch (19,33) or at least a component of a corresponding electrical safety switch. The lock has a manually operated connector (11) for actuation of the safety switch. The bolt operates with a coupling (3,4) to move the bolt to a release position, connected to the manual connector via a transmission (12,14).