Adjustable Tool for Elevator Landing Door Lock Alignment
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Solution Overview
Problem
Current elevator systems require technicians to adjust the alignment of elevator car and landing door components from the top, necessitating a safety volume and additional space, which is inefficient and time-consuming, especially during maintenance when precision adjustments are needed.
Innovation Solution
A tool with a telescoping element and adjustable parts that can be mounted inside the elevator car door, simulating the elevator car door coupling to allow for adjustments of landing door locks from within the elevator car, eliminating the need for top access and enabling multiple adjustments without reconfiguring the tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If technicians adjust door alignment from the top of the car, then they can directly view and measure clearance between components, but a safety volume and additional space are required above the car
Solution Approach 1:
The patent inverts the traditional adjustment approach by moving the measurement and adjustment function from the top of the car to the interior of the car. The tool is mounted on the interior door panel rather than requiring access from above, eliminating the need for safety volume while maintaining measurement capability through the use of a scale and visual indicators visible from inside the car.
Solution Approach 2:
The patent introduces a tool as an intermediary device that bridges the gap between the interior mounting location and the exterior door components. The tool includes an exterior portion that extends through the door opening to engage with the door coupling and landing door lock, allowing measurement and adjustment to be performed from inside the car while still accessing the external components.
2Manufacturing precision
If technicians access door components from the top of the car, then alignment can be adjusted, but the process is time-consuming and requires reconfiguration for each landing
Solution Approach 1:
The patent creates a universal tool that can be mounted once on the interior door panel and used to adjust door alignment at multiple landings without reconfiguration. The tool remains fixed in the door opening while the car moves between landings, allowing the same tool to serve multiple adjustment functions across different floors, thereby eliminating repetitive installation and reconfiguration time.
Solution Approach 2:
The tool is pre-mounted on the interior door panel before the adjustment process begins. This preliminary installation establishes a fixed reference point and measurement system that remains in place throughout the entire multi-landing adjustment process, eliminating the need for repeated setup and configuration at each landing.
3Ease of operation
If a fixed measurement tool is used inside the car, then adjustments can be made from interior, but the tool must accommodate varying door opening sizes
Solution Approach 1:
The patent incorporates a telescoping element in the tool that allows the exterior portion to dynamically adjust its length. This dynamic adjustment capability enables the tool to accommodate varying door opening sizes and configurations while maintaining its mounting position on the interior door panel, providing both ease of operation and adaptability.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3C
AI summary
A tool for adjusting landing door locks in an elevator shaft is provided. The tool includes a first part that is adjustable in length and configured to be mounted in an elevator door opening and a second part movably attached to the first part and configured to simulate an elevator door coupling, the second part moveable along the length of the first part.