Elevator Car Movable Wall Panel for Hoistway Access
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Solution Overview
Problem
Accessing and maintaining components located outside the elevator car, such as within the hoistway, is difficult and poses safety risks for mechanics.
Innovation Solution
The elevator car features movable wall panels that can be pivoted or slid into an open position from inside the car, providing access to external components without requiring entry into the hoistway, along with safety switches to prevent movement when panels are not closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mechanic enters the hoistway to access components outside the elevator car, then access to external components is achieved, but safety risks and difficulty increase
Solution Approach 1:
The patent creates a nested access system where the movable wall panel forms an intermediate chamber between the elevator car interior and the hoistway. This nested structure allows mechanics to access external components through a protected intermediate space rather than directly entering the hazardous hoistway environment, thus improving safety while maintaining accessibility.
Solution Approach 2:
The movable wall panel acts as an intermediary element that creates a buffer zone or intermediate chamber. This mediator structure allows safe access to components located outside the elevator car without requiring direct entry into the hoistway, thereby resolving the contradiction between ease of access and safety by introducing a protective intermediate space.
2Ease of repair
If the elevator car structure is modified to provide internal access to external components, then maintenance ease is improved, but device complexity increases
Solution Approach 1:
The patent employs a movable wall panel that can dynamically change position between closed and open states. This dynamic element allows the elevator car structure to adapt between two configurations: a closed state for normal operation and an open state for maintenance access. The dynamic nature of the panel reduces the need for complex permanent openings or removable panels, simplifying the overall structure while enabling easy maintenance access to external components.
Data Source
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AI summary
An elevator car (6) comprises at least one movable wall panel (16, 18), which is movable between a closed position, in which the at least one movable wall panel (16, 18) constitutes a portion of a sidewall of the elevator car (6), and at least one open position providing an opening (24) which allows access to areas outside the elevator from inside the elevator car (6). The at least one movable wall panel (16, 18) includes a first movable wall panel (16) constituting or supporting a car operation panel (7b).