Fine Blanking Integrated Power Pins for Mobile Terminals
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Solution Overview
Problem
Existing methods for manufacturing power interfaces in mobile terminals are inefficient, requiring frequent battery charging and lacking in fast charging capabilities due to limited current-carrying capacity and complex manufacturing processes.
Innovation Solution
A method involving fine blanking of pin workblanks to create integrated power pins with increased cross-sectional area, allowing for improved current-carrying capacity and simplified manufacturing, thereby enhancing charging efficiency and reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If traditional stamping processes are used to manufacture power interfaces, then the manufacturing process is simple, but the current-carrying capacity is limited and charging speed is slow
Solution Approach 1:
The patent integrates multiple pin functions into a single integrated power pin structure. The first and second pins are merged into one unified component with a continuous metal strip, increasing the total current-carrying cross-sectional area while maintaining manufacturing simplicity through a single stamping process
2Area of stationary object
If multiple separate pins are used to increase current capacity, then the current-carrying area increases, but the manufacturing process becomes more complex
Solution Approach 1:
Multiple pin functions are combined into a single integrated power pin made from one continuous metal strip. This merging approach increases the effective current-carrying area while simplifying the manufacturing process to a single stamping operation, eliminating the need for multiple separate components and assembly steps
Solution Approach 2:
The patent transitions from a two-dimensional arrangement of separate pins to a three-dimensional integrated structure. The folded configuration creates multiple contact surfaces and current paths within a single component, effectively increasing the current-carrying cross-sectional area without proportionally increasing manufacturing complexity
3Manufacturing precision
If conventional blanking processes are used, then the manufacturing cost is low, but the surface quality has burrs and requires additional processing
Solution Approach 1:
The patent changes the key parameter of the blanking process from conventional cutting to fine blanking. This parameter change eliminates burr formation by using a specialized fine blanking die that produces clean, burr-free surfaces, thereby improving surface quality without adding separate deburring operations
Data Source
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AI summary
A power adapter, a mobile terminal, and a power interface (100) and a manufacturing method therefor. The manufacturing method comprises: S10, taking a pin blank (200) having a first side (201) and a second side (202) adjacent to each other; S20, fine-stamping the first side (201) in a predetermined stamping direction, rough edges being formed on the second side (202); and S30, adjusting the position of the pin blank (200), and fine-stamping the second side (202) in a predetermined direction, so as to form power pins (120) of the power interface (100).