A four-fold safety window for a gantry car

The design of the gantry-type four-fold safety window solves the problem that the safety window inside the elevator car cannot be fully opened, ensuring unobstructed emergency escape routes, ensuring that the safety window can be fully opened in an emergency, avoiding interference with the car top components, and meeting the size requirements of different safety exits.

CN224604472UActive Publication Date: 2026-08-07ENVOL ELEVATOR CO LTD
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Patent Information

Application Number
CN202522545730.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-01
Publication Date
2026-08-07
Estimated Expiration
2035-12-01

AI Technical Summary

Technical Problem

The existing elevator car safety windows are designed as a single unit and cannot be fully opened. This results in the safety windows being blocked by the car top components when the car depth is small and the top floor height is low, leading to insufficient opening and increasing the difficulty of escape and posing a safety hazard.

Method used

The four-fold safety window adopts a gantry-type structure, which is connected by four window panels and hinges to achieve four-fold folding. Combined with the design of the rotary latch, it ensures that the window can be fully opened in an emergency and avoids interference with the car roof components.

Benefits of technology

It enables the safety window to be fully opened in an emergency, saving space, meeting the size requirements of different safety exits, and is easy to operate, facilitating long-term use and replacement of locks.

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Abstract

A four-fold safety window of a portal type car belongs to the technical field of elevator safety window. The safety window is installed at the window of the car top plate on the upper side of the car. The safety window comprises four separate window bodies, i.e. a first window body, a second window body, a third window body and a fourth window body which are sequentially connected together through hinges. The fourth window body is rotationally connected to the car top plate through a hinge at the end away from the third window body. The first window body cooperates with a switch baffle fixed on the car top plate. A rotating tongue lock is installed on the main plate surface of the first window body. When the rotating tongue lock rotates into or out of the lock hole penetrating through the first window body and the switch baffle, the rotating tongue lock stops or releases the upward opening of the first window body. The four-fold safety window has the advantages of simple processing and manufacturing, four-fold folding, smaller opening height than normal, space saving and interference solving.
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