Foldable Elevator Car Ceiling for Tool-Free Roof Access
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Solution Overview
Problem
Existing elevator systems require the use of special tools and labor-intensive processes to access the top area of the elevator car for maintenance, inspection, or emergency evacuation, which is inefficient and potentially dangerous.
Innovation Solution
A ceiling panel system with rollers and cables that allows for easy folding and unfolding without the need for additional tools, enabling convenient access to the car roof for maintenance and evacuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an integrated ceiling panel design is used, then the structural integrity and aesthetics of the elevator car are improved, but the complexity and danger of accessing the car roof for maintenance increases
Solution Approach 1:
The ceiling panel is divided into multiple segments that can be independently folded back. The first ceiling panel segment and second ceiling panel segment are connected through hinges, allowing them to be folded step-by-step to expose the car roof without compromising the overall structural integrity when in closed position.
Solution Approach 2:
The ceiling panel transitions from a static integrated structure to a dynamic foldable structure. The hinges and operating device enable the ceiling panels to move between closed and open states, providing easy access to the car roof while maintaining structural integrity during normal operation.
2Device complexity
If manual operation with auxiliary tools is required, then the device complexity is reduced, but the time and labor required for maintenance operations increases
Solution Approach 1:
The operating device is integrated into the ceiling panel system itself, allowing the ceiling panels to be opened and closed using the built-in mechanical advantage system of rollers and cables. This self-service mechanism eliminates the need for external auxiliary tools while reducing the time and effort required for operation.
Solution Approach 2:
The operating mechanism is nested within the ceiling panel structure. The rollers are mounted on the ceiling panels, and the cables are routed through the elevator car interior, creating a compact integrated system that provides mechanical advantage without adding external complexity.
3Ease of operation
If the ceiling panel is made foldable for easy access, then the ease of operation for maintenance is improved, but the structural stability may be compromised
Solution Approach 1:
The ceiling is divided into fixed portions and foldable portions. The first and second ceiling panel segments are hinged to allow folding, while remaining connected to the fixed ceiling structure, thus maintaining overall stability while enabling localized movement for access.
Solution Approach 2:
The hinges and operating mechanisms are pre-installed and configured to ensure stable operation. The mechanical advantage system is designed to maintain controlled movement throughout the folding process, preventing instability or unintended movements during operation.
Data Source
AI summary
An elevator car ceiling system, an elevator car and an elevator system. The elevator car ceiling system includes a ceiling panel, arranged below a car roof of an elevator car and having a normal state and a folded state, the ceiling panel includes a first panel and a second panel connected to each other, and the first panel and the second panel are folded in the folded state to provide an opening to the car roof; and an operating device, arranged inside the elevator car and connected to the ceiling panel, the operating device is configured for operating to cause the ceiling panel to enter the folded state from the normal state, or to return to the normal state from the folded state.