Elevator Ceiling Panel Pivoting Mechanism for Maintenance Access
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Solution Overview
Problem
Installation and maintenance of lighting elements in elevator cars, particularly those at the ceiling, are difficult due to limited access.
Innovation Solution
An elevator car design featuring a removable inner ceiling panel with protrusions that pivot and lock, allowing easy access for installation and maintenance by switching the locking mechanism between locked and unlocked states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If lighting elements are installed at the ceiling of the elevator car, then illumination of the interior space is improved, but access for installation and maintenance becomes difficult
Solution Approach 1:
The ceiling panel is divided into a removable inner ceiling panel and a fixed outer ceiling structure. The inner ceiling panel containing lighting elements can be detached as a separate unit, allowing maintenance personnel to access and replace lighting components without disassembling the entire ceiling structure or working at height.
Solution Approach 2:
The inner ceiling panel with lighting elements is extracted as a removable component from the fixed ceiling structure. This extraction allows the lighting elements to be accessed, removed, and replaced by simply detaching the inner panel, converting a difficult ceiling-level maintenance task into an accessible panel-level operation.
2Ease of operation
If the ceiling panel is made removable for easy maintenance access, then ease of operation is improved, but structural stability may be compromised
Solution Approach 1:
The ceiling structure incorporates a dynamic locking mechanism that transitions between locked and unlocked states. During normal operation, the locking mechanism secures the inner ceiling panel to maintain structural integrity. During maintenance, the locking mechanism can be unlocked to allow panel removal, providing both stability and accessibility as needed.
Solution Approach 2:
The locking mechanism changes its engagement parameter between locked and unlocked states. When locked, the panel is firmly secured to maintain ceiling stability. When unlocked, the panel can be easily removed for maintenance. This parameter change allows the same structure to provide both structural integrity and maintenance accessibility.
Data Source
Figure 1
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AI summary
An elevator car (6) comprises a ceiling (12) and two bars (18a, 18b) extending parallel to and spaced apart from each other along the ceiling (12), wherein each of the bars (18a, 18b) comprises a first opening (22a, 22b) and a second opening (24a, 24b). The elevator car (6) further comprises a ceiling panel (20) with two protrusions (26a, 26b) extending from opposite sides of the ceiling panel (20) and configured such as to be received within the first openings (22a, 22b) of the bars (18a, 18b), thereby allowing for a pivoting motion of the ceiling panel (20) around an axis extending between the two protrusions (26a, 26b); and at least one locking mechanism (28), which is switchable between a locked state and an unlocked state. In its locked state, the at least one locking mechanism (28) engages with one of the second openings (24a, 24b) for locking the ceiling panel (20) to at least one of the bars (18a, 18b) when the ceiling panel (20) is pivoted into an operating position in which the ceiling panel (20) extends parallel to the bars (18a, 18b). In its unlocked state, the at least one locking mechanism (28) allows the ceiling panel (20) to pivot from the operating position to a maintenance position in which the ceiling panel (20) is inclined with respect to the bars (18a, 18b).