An elevator door knife structure

By adopting a door knife base plate layout on both sides and a riveted hinged connection method in the elevator door knife structure, the problems of large space occupation and high complexity of the existing elevator door knife structure are solved, realizing the miniaturization and lightweighting of the elevator door operator, reducing production and maintenance costs, and meeting the needs of modern lightweight door operator systems.

CN224449945UActive Publication Date: 2026-07-03CANNY ELEVATOR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CANNY ELEVATOR
Filing Date
2025-08-12
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing elevator door operator structures are large in size and occupy a lot of space, making them difficult to adapt to modern, lightweight door operator systems. Their complex structure and numerous parts result in a large workload for assembly and adjustment, long production cycles, high costs, and increased energy consumption.

Method used

The design adopts a layout on both sides of the door knife base plate, combined with simplified connection methods of riveting and hinge, reducing the number of parts, and achieving synchronous movement of the blade assembly through the rotating arm assembly, simplifying the component structure and reducing weight and energy consumption.

Benefits of technology

This technology enables the miniaturization and weight reduction of elevator door operators, reduces assembly and adjustment difficulty, shortens production and maintenance cycles, reduces manufacturing costs and energy consumption, and meets the needs of modern lightweight door operator systems.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224449945U_ABST
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Abstract

This utility model discloses an elevator door knife structure, relating to the technical field of elevator mechanical transmission. It includes a door knife base plate, a rotating arm assembly, a blade assembly, a swing arm assembly, a car door lock hook assembly, and a fixed lock hook assembly. The rotating arm assembly, swing arm assembly, and car door lock hook assembly are all hinged to the door knife base plate, and the rotating arm assembly and swing arm assembly are riveted to the blade assembly. The blade assembly and swing arm assembly abut against the car door lock hook assembly. The fixed lock hook assembly restricts the rotation of the swing arm assembly. The door knife base plate and rotating arm assembly are located on one side of the door knife base plate, while the swing arm assembly, car door lock hook assembly, and fixed lock hook assembly are located on the other side. This component layout on both sides of the door knife base plate makes full use of space, significantly reducing the overall thickness and horizontal dimensions of the door knife. It solves the problem of traditional door knives occupying a large space and being difficult to adapt to lightweight door operator systems, thus facilitating the miniaturization and lightweight development of elevator door operators.
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