Fuse Assembly Segmented Housing and Integral Electrodes
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Solution Overview
Problem
Conventional fuse assemblies can experience electrical arcs and bad contacts due to incomplete fuse filament breakage and welded electrode joints, which are prone to failure during use.
Innovation Solution
A fuse assembly design featuring a disconnection member with C-like shaped electrodes housed in an enclosed space formed by two casing members, allowing complete fuse element breakage and eliminating the need for welding, thus preventing electrical arcs and ensuring reliable contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the cover and base are solid, then the structure is simple and easy to manufacture, but the fuse filament may fail to completely break off leading to electrical arc
Solution Approach 1:
The housing is divided into a first housing portion and a second housing portion that can be separated from each other. This segmentation allows the fuse element to completely break off and be separated into the two housing portions when the fuse operates, preventing electrical arc between the fuse element ends while maintaining simple manufacturing of each individual housing portion.
2Ease of manufacture
If the electrode pieces are joined by welding, then the assembly process is straightforward, but the welded joints may break during usage causing bad contact
Solution Approach 1:
The first electrode and second electrode are merged into a single integral electrode structure that is directly formed as one piece within the housing. This eliminates the need for welding separate electrode pieces together, thereby avoiding welded joint failures while maintaining straightforward assembly as the integral electrode is installed as a single component.
3Reliability
If the fuse element can break completely, then electrical arc is avoided and safety is enhanced, but the electrode structure becomes more complex
Solution Approach 1:
The housing is segmented into two separable portions that accommodate the broken ends of the fuse element. This segmentation enables complete breakage of the fuse element to prevent electrical arc, while the electrode structure itself remains relatively simple as it consists of integral electrodes directly formed in the housing portions without complex additional components.
Data Source
AI summary
The fuse assembly contains a first casing member with a first chamber, and a second casing member with a second chamber. An enclosed space is thereby formed by joining the first and second casing members together. A disconnection member is sandwiched between the first and second casing members. The disconnection member contains two electrodes and a fuse element between the two electrodes. Each electrode contains a first lateral section, a vertical section, and a second lateral section, jointly and integrally forming a C-like shape. The electrodes are positioned at two opposing ends of the second casing member and the fuse element is housed in the enclosed space. The enclosed space allows the fuse element to break off completely, thereby avoiding electrical arc and achieving enhanced usage safety.