FAB Floor Grating Cable Duct for Safe Semiconductor Cable Routing
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Solution Overview
Problem
High-altitude work during cable laying in semiconductor fabrication facilities poses significant risks of falls and accidents, including injuries and fatalities, due to the need for workers to access cable trays installed in elevated areas.
Innovation Solution
A grating system with a cable duct that allows cables to be laid safely and efficiently from the FAB floor to the clean sub-FAB without high-altitude work, using a cover, plate, and housing structure with a cable duct that includes rotatable cylindrical bodies for easy installation and a connection rotation mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cable trays are installed in high areas to accommodate cables, then cable management is achieved, but workers are exposed to fall risks during installation and maintenance
Solution Approach 1:
The patent transitions cable tray installation from a high-altitude three-dimensional space to a ground-level two-dimensional plane by introducing a grating system that extends cable routing capabilities to the floor level, eliminating the need for workers to access elevated cable trays
Solution Approach 2:
The grating system acts as an intermediary structure between the elevated cable trays and the ground level, providing a safe working platform and alternative cable access route that mediates the harmful interaction between workers and high-altitude environments
2Area of stationary object
If cable trays are installed at elevated locations, then space utilization is improved, but the complexity of cable installation and maintenance increases
Solution Approach 1:
The patent segments the cable routing system into multiple accessible points by introducing grating openings at ground level, allowing cable installation and maintenance to be performed in discrete, manageable sections rather than requiring access to the entire elevated cable tray system
Solution Approach 2:
Instead of bringing workers up to the cable trays, the patent inverts the approach by bringing the cable access points down to worker level through the grating system, reversing the traditional vertical access hierarchy
3Ease of manufacture
If conventional cable tray structures are used, then cable routing is achieved, but workers must perform high-altitude work leading to safety incidents
Solution Approach 1:
The patent extracts the cable access function from the elevated cable tray structure and relocates it to the ground level through the grating system, separating the cable routing function from the high-altitude environment that creates safety risks
Data Source
AI summary
Provided is a grating for fall prevention and a cable duct mounted on the grating, which includes: a cover; a plate which forms the floor surface of the FAB where the production equipment is located, and includes a rectangular opening provided in the center and a seating part provided around the opening where the cover is placed; and a housing which is provided below the plate, accommodates the cables of the production equipment that come down through adjacent gratings forming the floor surface of the FAB, and sends the cables down to the clean sub FAB (CSF) through the cable duct mounted in the second opening on the floor.