Elevator Car Panel Fastening Using Segmented Clip-In Supports
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Solution Overview
Problem
The existing elevator car panel fastening systems are difficult to install and replace due to increasing frictional force along the entire height of the car, requiring the removal and reinsertion of multiple clamping sections, making the process cumbersome and time-consuming.
Innovation Solution
The implementation of easily mountable and replaceable panels with clip-in fastening elements attached to the car frame, allowing panels to be installed and removed from the interior, using omega-shaped supporting sections with spring properties for secure holding, and optional features like cutaways for non-destructive removal and exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If clamping sections are used to fasten panels along the entire height of the car, then the panels are securely fastened, but the installation and replacement become difficult and time-consuming due to continuously increasing frictional force
Solution Approach 1:
The continuous clamping section is divided into multiple discrete clamping sections distributed along the height of the panel. Each clamping section independently fastens the panel at specific locations, providing sufficient overall fastening strength while allowing individual sections to be manipulated separately during installation and replacement, thereby reducing the cumulative frictional force problem.
Solution Approach 2:
The panel design includes bent panel sections that extend beyond the panel edges, creating an overhang that facilitates the insertion and removal of clamping sections. This preliminary structural preparation allows workers to easily engage and disengage clamping sections without having to overcome excessive frictional forces along the entire panel height.
2Area of stationary object
If panels extend over the entire height of the car with continuous clamping, then complete coverage is achieved, but the force required for pushing clamping sections continuously increases
Solution Approach 1:
The fastening system is segmented into multiple discrete clamping sections rather than one continuous clamping mechanism. This segmentation allows each clamping section to be pushed independently over a shorter distance, significantly reducing the cumulative pushing force required compared to a continuous clamping system spanning the entire panel height.
Solution Approach 2:
The bent panel sections create an geometric advantage that reduces the insertion force needed for clamping sections. The bent configuration provides a mechanical advantage that cushions the pushing force requirement, allowing clamping sections to be easily installed without excessive force despite covering the entire panel height.
3Strength
If two clamping sections must be removed and reinserted for each panel replacement, then secure fastening is maintained, but the replacement process becomes cumbersome
Solution Approach 1:
The fastening system uses multiple discrete clamping sections that can be independently manipulated. When replacing a panel, workers can focus on removing and reinserting only the specific clamping sections adjacent to the replacement area, rather than having to handle all clamping sections along the entire panel height, thereby simplifying the replacement process while maintaining fastening security.
Solution Approach 2:
The bent panel sections extending beyond the panel edges create a geometric configuration that facilitates easy insertion and removal of clamping sections. This preliminary structural design cushions the complexity of the replacement operation, allowing rapid removal and reinstallation of clamping sections without cumbersome procedures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates quick installation and replacement of elevator car panels, enabling easy changes in appearance without significant effort, such as altering color schemes or adding features like ventilation grilles and lighting, while maintaining a secure and aesthetically seamless joint.
Implementation Method 1
omega-shaped supporting sections with spring properties for secure holding
Data Source
AI summary
An elevator car includes supporting sections, which are arranged on a car frame. Each supporting section has a foot, a first arm and a second arm. The foot is fastened to the car frame, at their free ends the arms converge and form a slit-shaped constriction, into which panel sections of panels that form walls or a ceiling can be clipped. The arms possess spring properties and, at the constriction, can be moved apart against a spring force. The arms hold the panel sections in position in the area of the constriction.