Pivoting Fuse Shuttle for Accessible Fuse Replacement
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Solution Overview
Problem
Replaceable fuses in electrical transmission equipment are difficult to access and replace, especially in poorly accessible locations, and large fuse boxes complicate safe insertion and prevent access to hot power lines.
Innovation Solution
A fuse holder with a housing and pivotally and slidably cooperating fuse shuttle that allows for easy loading and secure positioning of fuses, enabling pivoting movement of at least 20 degrees and resilient receptacles for cylindrical fuse ends, facilitating safe and efficient replacement without disabling power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If fuse boxes are made large to accommodate multiple fuses, then more fuses can be stored, but access to fuses becomes more difficult
Solution Approach 1:
The fuse box is segmented into multiple independent fuse holders, each capable of holding one or more fuses. This segmentation allows the overall system to accommodate many fuses while maintaining compact individual units that are easy to access. Each fuse holder can be independently accessed without disturbing other fuses in the box.
Solution Approach 2:
The fuse holder incorporates a movable fuse receiving device that can pivot between a first position (for easy access and fuse insertion) and a second position (for secure operation). This dynamic mechanism allows the fuse to be easily accessed when needed while maintaining a compact profile when not in use, resolving the contradiction between accommodation capacity and accessibility.
2Reliability
If fuses are made large for safe handling, then safety is improved, but insertion into fuse box becomes more difficult
Solution Approach 1:
A fuse holder acts as an intermediary device between the large fuse and the fuse box. The fuse holder provides a mechanism for safely holding and manipulating the large fuse, making it easier to insert and remove from the fuse box without direct handling of the fuse itself. This intermediary structure enables safe handling of large fuses while facilitating easy insertion.
Solution Approach 2:
The movable fuse receiving device pivots between positions to facilitate easy insertion of large fuses. When in the first position, the receiving device is accessible for loading large fuses. When pivoted to the second position, it secures the fuse in place. This dynamic movement makes insertion easier while maintaining safety during operation.
3Ease of operation
If fuse box is minimized in size for easy access, then accessibility is improved, but safe insertion becomes more difficult
Solution Approach 1:
The fuse holder serves as an intermediary that provides a safe interface for inserting fuses into the compact fuse box. It includes features such as insulated barriers and guided insertion paths that prevent contact with hot power lines while maintaining a compact overall size. This intermediary structure enables safe insertion in minimized fuse box configurations.
Solution Approach 2:
The fuse holder is pre-configured with proper insulation, positioning features, and safety barriers before the fuse insertion process. This preliminary preparation ensures that even in a minimized fuse box, the insertion process remains safe by preventing contact with hot power lines from the outset, rather than requiring complex safety measures during the actual insertion.
Data Source
AI summary
A holder for receiving fuses is provided. The holder includes a housing and a fuse shuttle. The fuse shuttle is slidably cooperable with the housing in a first portion of the housing and pivotally cooperable with the housing in a second portion of the housing. The fuse shuttle and the housing define a fuse loading position and a fuse operational position.