Fuse Line Fixing Structure With Curved Electrode Contact
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Solution Overview
Problem
The existing fuse structures face challenges in enlarging the contact area between the fuse line and electrodes, leading to compromised electrical transmission performance and reliability, and the vent holes can be jammed by solder or adhesives, causing potential explosions due to unrelieved energy.
Innovation Solution
A fuse line fixing structure featuring a base with support sections and curved electrodes with concave and convex engagement surfaces that increase contact area and a cover with a through opening to prevent jamming, allowing for enhanced electrical transmission and safety by maintaining the functionality of the venting mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fuse line is soldered to flat metal plate electrodes in a line-to-surface arrangement, then the structure is simple and easy to manufacture, but the contact area between the fuse line and electrode is limited, affecting electrical transmission performance and reliability
Solution Approach 1:
The electrode is designed with a curved plate structure instead of a flat plate, creating a concave engagement surface that matches the cylindrical shape of the fuse line. This curvature enables surface-to-surface contact between the fuse line and electrode, significantly enlarging the contact area and improving electrical transmission reliability while maintaining manufacturing feasibility
Solution Approach 2:
The electrode structure transitions from a two-dimensional flat plate to a three-dimensional curved plate with concave engagement surfaces. This dimensional change allows the electrode to wrap around or engage with the cylindrical fuse line, creating extensive surface-to-surface contact area that was not achievable with flat plates
2Object-affected harmful factors
If vent holes are formed in the base of the fuse, then explosion energy can be released, but the vent holes may be jammed by solder or adhesives during assembly, causing the fuse housing to explode
Solution Approach 1:
The vent hole is extracted from the base structure and relocated to the cover structure. This separation ensures that the vent hole is positioned away from soldering or bonding operations, preventing jamming by solder or adhesives while maintaining the explosion energy release function
Solution Approach 2:
The cover with the vent hole is designed to be assembled after the base and electrode are soldered together. This preliminary action sequence ensures that the vent hole remains unobstructed by solder or adhesives, maintaining reliable venting functionality while allowing proper assembly of other components
Data Source
AI summary
A fuse line fixing structure of a fuse includes a base having first and second support sections. The first support section has two sides each forming a first wing and a first concave surface is formed between the first support section and the first wings. First and second electrodes are respectively arranged at two ends of the base. The first electrode includes a first curved plate arranged between the first support section and the first wings. The first curved plate has a convex engagement surface positioned against the first concave surface and a concave engagement surface facing toward an upper side of the first concave surface. The fuse line straddles between the first and second support sections and has an outer circumferential surface in mutual contact, through surface to surface engagement, with the concave engagement surface of the first curved plate.