USB Plug Fixing Structure for Stable Weld-Free Assembly
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Solution Overview
Problem
Existing USB connectors have poor integrity, high production costs, and complex structures due to exposed metal housings and welding connections, which hinder practicality and simplicity.
Innovation Solution
A USB plug design featuring an extending plate integrally connected to the lower housing, a contact pad structure on the circuit board, and a metal housing that sleeves outside the extending plate and contact pad, with a fixing structure between the housings providing an interference fit and a latching mechanism for stability and easy installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If exposed metal housings with additional connection means (welding) are used, then the USB connector achieves structural strength, but the integrity deteriorates and production cost increases
Solution Approach 1:
The patent integrates the connection function directly into the metal housing structure by designing the extending plate as an integral part of the housing, eliminating the need for separate welding operations. The contact pad structure is directly formed on the circuit board, merging the connection means with the housing itself, thereby improving integrity while maintaining structural strength.
2Strength
If exposed metal housings with additional connection means are used, then the USB connector achieves structural strength, but the production cost increases
Solution Approach 1:
By combining the housing structure and connection means into a single integrated component, the patent eliminates separate welding operations and reduces the number of parts. The extending plate is formed as one piece with the metal housing, and the contact pad structure is directly created on the circuit board, simplifying manufacturing processes and reducing production costs while maintaining structural strength.
Solution Approach 2:
The patent segments the USB connector into distinct functional modules: the metal housing with extending plate, the circuit board with contact pad structure, and the insulating housing. This segmentation allows each component to be manufactured independently using optimized processes and then assembled, reducing overall production complexity and cost.
3Strength
If exposed metal housings with additional connection means are used, then the USB connector achieves structural strength, but the structure becomes complex
Solution Approach 1:
The patent merges the housing structure with the connection means by designing the extending plate as an integral part of the metal housing and the contact pad structure as a direct formation on the circuit board. This integration eliminates separate connection components and simplifies the overall structure while maintaining the necessary structural strength for reliable connections.
Data Source
AI summary
The present invention provides a USB plug with fixing structure for convenient installation, and tends to provide a USB plug with better integrity, simple structure and practicability, the key point of the technical solution of the present invention is that a USB plug body includes an upper housing, a lower housing and circuit boards disposed in the upper housing and the lower housing, the USB plug further includes a plug portion including an extending plate integrally connected with the lower housing, a contact pad structure integrally connected with the circuit board and abutting the extending plate, and a metal housing sleeved outside the extending plate and the contact pad structure, and the present invention is applied to the technical field of USB plugs.