Wireless Elevator Door Locking to Prevent Wrong-Door Unlocking

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Solution Overview

Problem

Existing elevator door locking systems are prone to incorrect wiring connections or controller faults, leading to the risk of unlocking the wrong locks and exposing passengers to potential falls into the shaft.

Innovation Solution

Implementing wireless magnetic field induction current-controlled locks that use electro-magnetic coils and electro-magnets to unlock elevator doors, eliminating the need for external power wiring and ensuring secure door operation based on the proximity of the elevator car.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If wireless magnetic field induction current is used to control locks, then reliability is improved, but device complexity increases

Engineering Contradiction:

Improvedoor locking reliabilityVSAvoidlock system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the traditional mechanical wiring-based control system with a wireless magnetic field induction system. The controller uses magnetic field induction to wirelessly transmit unlocking signals to the locks, eliminating physical wire connections and reducing the risk of wiring errors while maintaining system reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a wireless magnetic field induction mechanism as an intermediary between the controller and the locks. This intermediary enables communication without direct electrical connections, reducing the complexity of wiring while ensuring reliable signal transmission for door unlocking operations.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If external power wiring is eliminated, then safety is improved, but manufacturing complexity increases

Engineering Contradiction:

Improvesafety hazards from wiring errorsVSAvoidlock installation complexity

Core Design Contradiction:

Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The patent eliminates external power wiring by using magnetic field induction to wirelessly power and control the locks. This substitution removes the harmful factor of wiring errors that could lead to unintended unlocking, while the modular design of the wireless system actually simplifies installation compared to traditional wired systems.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Ensures safe and reliable door unlocking by preventing unintended unlocking due to wiring errors or controller malfunctions, enhancing passenger safety by ensuring doors only open when the elevator car is correctly positioned.

Implementation Method 1

the lock being unlocked by a wireless magnetic field induction current

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

use electro-magnetic coils and electro-magnets to unlock elevator doors

Methodology Applied

Scientific EffectElectromagnet: Electromagnet

Data Source

PatentUS12515919B2Elevator and door lock therefor and method for unlocking thereof

Publication Date: 2026.01.06 TIETEL ISRAEL

AI summary

A lock for an elevator door, the lock being a wireless magnetic field induction current controllable lock.