Segmented Elevator Lighting Cover for Wall Damage Prevention
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Solution Overview
Problem
Conventional elevator cage lighting devices face challenges in installability due to the need for an elongated lighting cover that can extend over the entire cage length, leading to potential damage to the cage walls or the lighting cover during installation, especially when rotating the cover to fit the width direction.
Innovation Solution
A cage lighting device with a lighting cover attachment member that includes a main cover and auxiliary covers, where the auxiliary covers are smaller in lengthwise dimension than the main cover, allowing them to slide and be fixed in positions that prevent contact with the cage walls, thereby facilitating easy installation without damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If an elongated lighting cover extending over the entire cage length is used, then the lighting coverage is improved, but the lighting cover may contact the cage wall causing damage
Solution Approach 1:
The lighting cover is divided into multiple separate lighting covers instead of using a single elongated cover. Each lighting cover has a limited length that prevents contact with cage walls, eliminating the damage risk while collectively providing full lighting coverage through multiple units installed at different positions along the cage
Solution Approach 2:
The lighting covers are arranged in the depth direction (front-rear direction) of the cage rather than extending in the width direction. This dimensional change allows full lighting coverage to be achieved without requiring long covers that would contact the cage walls
2Area of stationary object
If the lighting device is disposed to extend in the width direction of the cage, then the lighting coverage is improved, but sufficient space for rotating the lighting cover is required reducing installability
Solution Approach 1:
The lighting device is configured to extend in the depth direction of the cage rather than the width direction. This allows the lighting cover to be installed by simply transporting it through the car doorway without requiring rotation maneuvers, significantly improving installability while still achieving comprehensive lighting coverage
Solution Approach 2:
The lighting cover is segmented into multiple shorter units that can be individually transported through the car doorway and installed at different positions, eliminating the need to rotate a single long cover and simplifying the installation process
3Area of stationary object
If the lighting device is disposed to extend in the width direction of the cage, then the lighting coverage is improved, but the lighting cover may contact the cage wall causing damage
Solution Approach 1:
The lighting device is oriented to extend in the depth direction of the cage rather than the width direction. This dimensional reorientation ensures that the lighting cover does not contact the cage walls during installation or operation, eliminating the damage risk while maintaining effective lighting coverage
Solution Approach 2:
The lighting cover is divided into multiple shorter segments that are installed at different positions along the cage. Each segment is short enough to prevent wall contact, and together they provide comprehensive lighting coverage without requiring the cover to span the entire width of the cage
Data Source
AI summary
In a cage lighting device for an elevator, a lighting cover includes a main cover, a first auxiliary cover opposing a first cage wall, and a second auxiliary cover opposing a second cage wall. Respective dimensions of the first and second auxiliary covers in a lengthwise direction of the lighting cover are smaller than a dimension of the main cover in the lengthwise direction of the lighting cover. By loosening a first auxiliary cover fastening tool, the first auxiliary cover becomes capable of sliding in the lengthwise direction relative to a lighting cover attachment member between a position adjacent to the main cover and a position contacting the first cage wall.