Locking device for escape door

Abstract

The invention provides a locking device for an escape door. The locking device comprises a mounting plate, a driving component, a locking component, an unlocking component and a lock pin, wherein the mounting plate is mounted in an escape door frame; the driving component comprises a shaft holder, an input shaft, a cam, a driving rod, a guiding block, an output shaft and a square baffle block; the locking component comprises a box body, a spring bolt, a resetting extension spring, a long box body hole and a pin shaft; the unlocking component is mounted on an input shaft of the driving component and comprises a push rod unlocking device and a key unlocking device; the lock pin is mounted on the mounting plate and is corresponding to the spring bolt; under the effect of gravity, the driving component and the output shaft thereof are maintained on the locking positions of the locking component; the unlocking component is used for driving the input shaft of the driving component to rotate and act on the cam; the cam is used for driving the square baffle block to linearly move and driving the driving rod to move along the same direction; when the output shaft reaches the top of the long box body hole, the unlocking is realized; when the output shaft reaches the bottom of the long box body hole, the locking is realized.

Description

technical field [0001] The invention relates to the technical field of escape emergency doors, in particular to various types of rail transit platform full / half-height doors, screen doors and other escape emergency doors with special locking requirements. Background technique [0002] With the construction and development of rail transit platform full / half-height doors and screen door systems in recent years, as well as the design and production of other special locking requirements for safety, the core door lock device technology for escape emergency doors has been rapidly developed and widely used. In the prior art, there are two common escape emergency door lock devices as follows: [0003] 1. An external push rod lock is adopted. The push rod lock is installed outside the escape emergency door frame as a whole. The door opening push rod is close to the track side, which is easy to invade the limit and affect the driving safety. At the same time, it affects the appearance...

AI Technical Summary

Problems solved by technology

[0003] 1. An external push rod lock is adopted. The push rod lock is installed outside the escape emergency door frame as a whole. The door opening push rod is close to the track side, which is easy to invade the limit and affect the driving safety. At the same time, it affects the appearance and consistency of the door body. Its transmission mechanism, locking The design of the mechanism makes it possible to use other methods to act on the lock tongue of the locking mechanism to release the lock, which is not conducive to the safe operation and management of the user unit. In addition, if the lock tongue protrudes outside the emergency door body under normal conditions, the user must close the door. The door can be closed smoothly only after one unlocking action. If it is used negligently, a collision will occur, causing damage to personnel, the door body, and the push rod lock.

[0004] 2. The general built-in push rod lock is adopted. The design of its transmission mechanism and locking mechanism makes it possible to use other methods to act on the lock tongue of the locking mechanism to release the lock, which is not conducive to the safe operation and management of the user unit, and its lock tongue Under normal conditions, the outside of the escape emergency door body is highlighted. When the user closes the door, the user must perform an unlocking action to close the door smoothly. If the user is negligent, a collision will occur, causing damage to the person, the door body, and the push rod lock.

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