Strip Fuse with Insulating Fill and Universal Mold
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Solution Overview
Problem
Traditional fuses experience air ionization and arcing phenomena when overloaded, leading to potential fires, electrical injuries, and explosions due to high temperatures damaging insulating housings, and require multiple molds for different sizes and shapes, increasing production costs and time.
Innovation Solution
A high breaking capacity strip fuse with an insulating housing and a fusing element featuring a fusible part, connecting terminals, and a tin layer, filled with insulating materials like silicone or ceramic powder to prevent arcing and improve heat absorption, along with a manufacturing method that uses a single mold to produce fuses of varying sizes and shapes by milling and punching, reducing production costs and time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fuses are used without insulating material filling, then the structure is simple and manufacturing is easy, but air ionization and arcing phenomenon occur causing safety hazards
Solution Approach 1:
The patent introduces insulating material as an intermediary substance filled into the housing cavity to mediate between the fusing element and the surrounding environment. This insulating material prevents direct contact between arc and housing, eliminating the safety hazard while maintaining structural simplicity.
Solution Approach 2:
The insulating material creates an inert environment within the housing cavity, preventing air ionization and arc formation. By replacing the reactive air atmosphere with an inert insulating medium, the patent eliminates arcing phenomena and improves safety without significantly complicating the device structure.
2Productivity
If different molds are used for different fuse sizes and shapes, then manufacturing precision is maintained, but production costs increase and production time increases due to frequent mold changes
Solution Approach 1:
The patent applies a universal mold design that can produce fuses of different sizes and shapes by using interchangeable inserts or adjustable components within the same mold base. This multi-functional approach maintains manufacturing precision while eliminating the need for multiple dedicated molds, thereby improving production efficiency and reducing mold change time.
Solution Approach 2:
The mold is segmented into modular components, allowing specific sections to be changed or adjusted without replacing the entire mold. This segmentation enables flexible production of different fuse configurations while maintaining precision, reducing the number of mold changes required and improving overall productivity.
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
The solution effectively prevents arcing and enhances the fuse's breaking capacity and temperature withstand ability, while simplifying production by reducing mold changes and costs, thereby improving safety and efficiency.
Implementation Method 1
filled with insulating material such as silicone, quartz sand, resin, ceramic powder/ceramic sand, steatite powder/steatite sand or saponite powder/saponite granules in the sealed housing of the fuse, which can solve the problem that the fuse of priority art is over loaded, the fusing will cause air ionization and trigger the technical problem of arcing phenomenon
Implementation Method 2
The surface of the fusible part is soldered with a tin layer
Implementation Method 3
the surface of the fusible part is soldered with a tin layer
Implementation Method 4
When the current is over load, the metal sheet or metal wire of the fuse generates high temperature and melts to interrupt current
Data Source
AI summary
The present invention relates to a high breaking capacity strip fuse, comprising an insulating housing and a fusing element. The fusing element includes a fusible part, a first connecting terminal and a second connecting terminal which are arranged at two ends of the fusible part and are integrally connected with the fusible part; the fusible part is fixed in the sealed cavity of the housing, and the sealed cavity is filled with insulating material. The present invention provides a fuse filling with insulating material, such as Silicone, quartz sand, resin, ceramic powder/ceramic sand, steatite powder/steatite sand, or saponite powder/saponite granules, in the sealed cavity, to solve the problem of causing the air to ionize and triggering arcing phenomenon of existing fuse during overload.