Elevator Door Locking Beak Assembly with Magnetic Detection
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Solution Overview
Problem
Current elevator door safety mechanisms are inadequate, relying on unreliable electronic components or noisy contact-based systems, which can fail to prevent doors from opening when the elevator is not at a safe level, leading to safety hazards and code compliance issues.
Innovation Solution
A safety mechanism using an adjustable zone target and magnets in a detector arm to detect the leveling zone, with a beak assembly that locks and unlocks the doors without physical contact, allowing doors to open only when the elevator is safely aligned with the hoist way.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contact-based door restraint mechanisms are used, then door locking reliability is improved, but noise increases and weight increases requiring slower door operation
Solution Approach 1:
The patent replaces the mechanical contact-based door restraint system with a magnetic field-based detection system. The detector assembly uses magnets to sense the car's position relative to the landing zone without physical contact, eliminating the noise generated by mechanical contact while maintaining reliable door locking control
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the detector and the car door system. The magnets in the detector assembly create a magnetic field that interacts with the target zone to detect positioning without direct mechanical contact, serving as a non-contact mediator that eliminates noise while preserving functional reliability
2Reliability
If contact-based door restraint mechanisms are used, then door locking reliability is improved, but device weight increases
Solution Approach 1:
The patent replaces heavy mechanical contact components with a lightweight magnetic detection system. The detector assembly using magnets and a target zone eliminates the need for heavy mechanical contactors, solid vanes, and associated actuating mechanisms, significantly reducing the weight of the door restraint system while maintaining reliable door locking control
Solution Approach 2:
The magnetic field serves as a lightweight intermediary that transmits positioning information without requiring heavy mechanical structures. The magnets and target zone create a lightweight sensing system that replaces bulky mechanical contact-based restraint mechanisms, reducing overall system weight while preserving functional reliability
3Measurement precision
If electronic door restraint systems are used, then door control precision is improved, but system reliability deteriorates when power is lost
Solution Approach 1:
The patent implements a self-service mechanism where the magnetic detector assembly passively detects the car's position through magnetic field interaction without requiring external power. The system uses the inherent magnetic properties of the target zone and magnets to automatically determine positioning and control door locking, ensuring continuous operation and reliability even when electrical power is lost
Solution Approach 2:
The patent replaces electronic power-dependent systems with a magnetic field-based detection system that operates without external power. The magnetic interaction between the detector assembly and target zone provides passive, power-independent positioning detection, maintaining system reliability during power loss while achieving precise door control
4Productivity
If magnetic detector assembly is used, then door operation speed is improved, but measurement precision must be maintained
Solution Approach 1:
The patent replaces slow mechanical contact-based detection with a magnetic field-based detection system that operates at higher speeds. The magnetic detector assembly can rapidly sense the car's position relative to the landing zone without the mechanical contact and wear limitations, enabling faster door operation while maintaining precise leveling zone detection through optimized magnet positioning and target zone design
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
This solution provides a reliable, quiet, and efficient door locking system that ensures elevator doors remain closed when outside the safe leveling zone, enhancing passenger safety and compliance with safety codes by allowing doors to open only when the elevator is at a safe level, while also allowing faster door operation.
Implementation Method 1
uses an adjustable zone target and one or more magnets mounted in a detector arm to detect the leveling zone of an elevator car
Data Source
AI summary
The disclosure provides an apparatus and mechanism for and elevator safety mechanism. The safety mechanism can include a lock bar, a beak assembly, a detector assembly, and a linkage rod providing communication between the beak assembly and the detector assembly. The beak of the beak assembly can engage a catch in the lock bar when the safety mechanism is in a closed position, preventing the doors of the elevator from further opening.