Integrated Asynchronous Door Knife for Elevator Car Lock
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Solution Overview
Problem
The existing technologies for elevator car door locks require separate mounting and debugging of door knives and car door locks, leading to inefficiency and increased failure rates, as well as high costs and safety concerns.
Innovation Solution
An asynchronous door knife integrated with the elevator car door lock, featuring a track rack, dynamic blade, unlocking blade, lock hook, and lifting mechanism, allows for easier mounting and debugging, enhancing safety performance by integrating the door knife with the car door lock and enabling efficient unlocking through lifting and rotating mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If door knives and car door locks are separately arranged and mounted, then each component can be independently installed, but the mounting and debugging process becomes complex and time-consuming, increasing failure rates
Solution Approach 1:
The patent combines the door knife and car door lock into a single integrated assembly. The door knife is mounted on the car door lock base frame, allowing both components to be installed together as one unit. This integration eliminates the need for separate mounting and cooperative debugging, significantly simplifying the installation process and reducing failure rates while maintaining independent installability through the unified design.
2Reliability
If an independent car door lock is mounted with unlocking blades on each floor, then the car door can be locked and unlocked, but precise alignment becomes difficult when the car is at high floors, increasing mounting difficulty and failure rate
Solution Approach 1:
The patent employs a dynamic linkage mechanism involving a linkage rod connecting the unlocking blade to the lock hook. When the unlocking blade moves, the linkage rod transmits this motion dynamically to lift the lock hook, which then releases the latch. This dynamic transmission mechanism compensates for alignment variations at different floors, making precise mounting less critical while maintaining reliable locking and unlocking functionality.
3Reliability
If a protecting wall is mounted on the inner surface of the well, then passenger safety is improved, but installation cost and time increase significantly
Solution Approach 1:
The patent extracts the safety function from the traditional protecting wall structure and integrates it into the car door lock mechanism itself. The lock hook and latch system provides the necessary safety function within the existing car door assembly, eliminating the need for separate protecting wall installation. This approach maintains passenger safety while significantly reducing installation time and cost.
Data Source
AI summary
An asynchronous door knife comprises a track rack and a base plate; a dynamic blade and an unlocking blade which are connected on the front of the base plate in a swinging manner; a knife lifting ball which is arranged on the dynamic blade; a lock hook which is arranged on the back of the base plate and correspondingly buckled with a latch, wherein the unlocking blade is connected on the base plate through a lifting plate; the lifting plate is hinged on the base plate and comprises a first swing arm and a second swing arm; the first swing arm is hinged with the unlocking blade; the second swing arm is connected with an unlocking connecting rod; a lifting hole is additionally formed on the base plate; the middle of the lock hook is hinged with the unlocking connecting rod through the lifting hole.