Elevator door anti-pinch device

By combining photoelectric protection devices and contact protection components, the problem of false judgment caused by dust covering the sensors is solved, realizing fast and reliable anti-pinch protection for elevator doors and ensuring the safe operation of elevators.

CN224449947UActive Publication Date: 2026-07-03JINING SPECIAL EQUIP INSPECTION & RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JINING SPECIAL EQUIP INSPECTION & RES INST
Filing Date
2025-07-01
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

In existing elevator door anti-pinch devices, the sensors are easily covered by dust, making it impossible to accurately determine whether there are obstacles in the door area, which may lead to accidental injury to passengers.

Method used

The system employs a combination of photoelectric protection devices and contact protection components. The photoelectric protection devices detect obstacles through infrared transmitters and receivers, while the contact protection components form reliable contact through elastic contact plates and conductive plates, and remove dust with soft bristles, ensuring the reliability of the sensor.

Benefits of technology

It achieves fast and reliable anti-pinch protection for elevator doors, preventing accidental injury to passengers and ensuring the safe operation of elevators under various working conditions.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224449947U_ABST
    Figure CN224449947U_ABST
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Abstract

The utility model provides a kind of elevator door anti-pinch device, including a set of elevator door body, a set of photoelectric protection device is arranged between the elevator door body, each elevator door body is provided with anti-pinch plate, each anti-pinch plate and each elevator door body between are provided with connecting assembly, each anti-pinch plate and each elevator door body between are provided with contact protection assembly. This kind of elevator door anti-pinch device, the cooperation of the photoelectric protection device and contact protection assembly being set, first detection can be carried out between elevator door body, contact protection assembly will carry out re-detection to elevator door body, reliable contact between conducting sheet and elastic contact piece can be formed to form conducting path, so that elevator control system will trigger door machine to stop running or reverse door opening instruction, realize fast, reliable anti-pinch protection, effectively prevent passenger from being hurt, ensure the safe operation of elevator door body under various working conditions.
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