| 摘要 |
This invention relates to a device for use in elevators for the unlocking and locking of closed doors, gates, bars or wickets. The device comprises a mechanical locking means arranged at the door, gate, bar or wicket and includes a locking bolt moved to locking position by a spring. The locking bolt is movable against the action of the spring to a non-locking position by means of an electromagnet which is arranged to be activated, by a lock actuator device carried by the elevator cage, when the cage is at a holding floor at which it is to be stopped. The locking means further includes an electrically conductive element, preferably in form of a contact washer around the locking bolt or a prolongation of the bolt, which element follows the motion of the locking bolt and operates to close an electric circuit when the bolt is in locking position. The circuit must be closed in order that the elevator can be moved from the holding floor, whereby an electrically controlled separately operable locking function is also achieved.
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