| 摘要 |
<p>#CMT# #/CMT# The system has a driving unit (2) and a coupling bush (3) driven in rotation around a rotation axis. Selection units (6) include a finger (7) and activating units (8) for activating the finger from an inactive position in which the finger is extended in a notch of the bush to prevent rotation of the bush, to an active position in which the finger is not extended in the notch to rotate the bush and the driving unit, and vice-versa. Control units control the selection units between the active and inactive positions, and vice-versa. #CMT#USE : #/CMT# System for controlling a locking and unlocking device of an emergency lock for a hoistway landing door of a lift. #CMT#ADVANTAGE : #/CMT# The system ensures simple and inexpensive controlling of the locking and unlocking device of the emergency lock and is adaptable to large number of hoistway landing doors of the lifts. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a front exploded perspective view of a control device for controlling a locking and unlocking device of an emergency lock for a hoistway landing door of a lift. 2 : Driving unit 3 : Coupling bush 6 : Selection units 7 : Finger 8 : Activating units.</p> |
