Elevator Door Coupling Lock With Rotor Linkage for Misalignment Safety
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Solution Overview
Problem
Existing coupling and locking devices for elevator doors are inefficient, lacking in precision and speed, and are not durable enough to meet the requirements of modern elevator standards, such as EN 81-20 and EN 81-50, which prioritize safety in misaligned door configurations.
Innovation Solution
A mechanical coupling and locking device with a rotor mechanism that enhances the sensitivity and precision of the hooking lever movement, utilizing a parallelogram mechanism and rotating levers to ensure rapid and precise alignment and locking of elevator doors, incorporating rolling bearings for enhanced durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cost-effective route is chosen for door coupling and locking devices, then manufacturing cost is reduced, but the duration and precision of coupling operation deteriorates
Solution Approach 1:
The patent implements a dynamic coupling mechanism where the coupling element can transition between engaged and disengaged states based on door alignment. The mechanism uses movable components that automatically adjust their position and function depending on the operational state, enabling precise coupling only when doors are properly aligned while maintaining cost-effectiveness through simplified static configurations.
Solution Approach 2:
The invention changes the operational parameters of the coupling mechanism by introducing a rotor that converts rotational motion into linear displacement of the coupling element. This parameter transformation enables the system to achieve high precision coupling operations through controlled mechanical movement, while the overall device remains cost-effective by using simple mechanical components rather than complex systems.
2Ease of manufacture
If cost-effective route is chosen for door coupling and locking devices, then manufacturing cost is reduced, but the speed of locking operation deteriorates
Solution Approach 1:
The locking mechanism employs dynamic elements that can rapidly transition between locked and unlocked states. The coupling element is designed to move quickly between positions when actuated, and the rotor mechanism provides fast rotational-to-linear conversion, enabling rapid locking operations while maintaining cost-effectiveness through simple mechanical design.
Solution Approach 2:
The system performs preliminary alignment and positioning actions before the final locking engagement. The coupling element is pre-positioned and ready to engage, and the rotor mechanism is pre-configured to provide rapid motion when activated, reducing the overall locking time while keeping the device simple and cost-effective.
3Device complexity
If simple mechanical mechanism is used for coupling and locking, then device complexity is reduced, but durability and resistance deteriorates
Solution Approach 1:
The patent incorporates dynamic elements that automatically adjust to operational conditions, enhancing durability without increasing overall system complexity. The coupling mechanism includes movable components that can absorb shocks and adapt to variations in door alignment, while the rotor provides smooth motion transformation, reducing wear on mechanical parts.
Solution Approach 2:
The design includes cushioning elements and shock-absorbing features that protect the mechanical components from excessive forces and impacts. The coupling mechanism is designed to handle misalignment and operational shocks without damage, maintaining reliability while keeping the overall device simple and cost-effective.
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
The device provides faster and more precise operation with improved durability, ensuring safe and efficient alignment and locking of elevator doors, even in misaligned configurations, thereby preventing accidental openings during malfunctions.
Implementation Method 1
incorporating rolling bearings for enhanced durability
Data Source
AI summary
A coupling and locking device for synchronous doors of an elevator. The device includes a pair of coupling blades movable on a base plate, a pair of rotating levers hinged to the coupling blades to form a parallelogram mechanism, and a hooking lever movable to engage a fixed component of the elevator. The hooking lever is connected to a first rotating lever by a rotor mechanism having a primary rotor rotatable around a fixed pin on the base plate, and a secondary rotor with a first connecting pin for connection to the first rotating lever and a second connecting pin for connection to the primary rotor. A third connecting pin connects the hooking lever with the secondary rotor such that movement of the coupling blades causes a rotation of the hooking lever. The secondary rotor has an arc-shaped slot, within which the third connecting pin is inserted.