A shaft door for an elevator has a door guard arrangement that includes a force sensor and a safety switch, wherein the force sensor comprises a contact unit and a spring mechanism with a spring. The force sensor senses a presence of an object clamped by the shaft door due to the shaft door closing wherein the contact element contacts the clamped object and transfers a force to the spring. The spring mechanism activates the safety switch to send a door-to-open command to a door operator of the elevator when the force transferred to the spring exceeds a stiffness of the spring.
SHAFT DOOR WITH A DOOR GUARD ARRANGEMENT
2024-06-06
Patent
Electronic Resource
English
IPC: | B66B Aufzüge , ELEVATORS |
Door guard with door protector to prevent door scratches
European Patent Office | 2021
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