Unlocking device for elevator landing door

An unlocking device for an elevator landing door comprises a connecting rod mechanism and a rotating mechanism, the connecting rod mechanism comprises a base, an ejector rod fixed to the upper end ofthe base, a mounting base arranged on the landing door and a spring arranged on the ejector rod in a...

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Bibliographic Details
Main Author LI JIAJIANG
Format Patent
LanguageChinese
English
Published 08.01.2021
Subjects
ACCESSORIES THEREFOR
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
FIXED CONSTRUCTIONS
HANDCUFFS
HAULING
HOISTING
KEYS
LIFTING
LOCKS
PERFORMING OPERATIONS
SAFES
TRANSPORTING
WINDOW OR DOOR FITTINGS
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Summary:An unlocking device for an elevator landing door comprises a connecting rod mechanism and a rotating mechanism, the connecting rod mechanism comprises a base, an ejector rod fixed to the upper end ofthe base, a mounting base arranged on the landing door and a spring arranged on the ejector rod in a sleeving mode, the spring is located between the mounting base and the base, and the ejector rod isarranged in the mounting base in an up-down moving mode. The upper end of the ejector rod is connected with a door lock switch of the landing door; the rotating mechanism comprises a rotating piece and a lock piece, the lock hole end of the lock piece is arranged on the landing door, the other end of the lock piece is connected with the rotating piece, the rotating piece rotates under the drivingof the key, the upper end of the rotating piece comprises an arc-shaped top plate, and the two ends of the arc-shaped top plate are bent downwards; one end of the arc-shaped top plate is located below the base. The contact par
Bibliography:Application Number: CN202020929057U