PCB Board-to-Board Structure for More Weld Legs in Narrow Boards
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Solution Overview
Problem
The number of connecting pins between a bottom board and a functional board in a general PCB is relatively small, limiting the number of weld legs leading out from the functional board when its width is constrained.
Innovation Solution
A board-to-board connection structure comprising a bottom board with first and second pads, a functional board with third and fourth pads, a first partition board with a second slot, and a first bridge board with fifth and sixth pads, allowing the functional board to penetrate through slots and be installed on the bottom and bridge boards, with pads connected to expand weld legs perpendicularly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the width of the functional board is limited, then the board size is controlled, but the number of weld legs leading out from the functional board becomes relatively small
Solution Approach 1:
The patent introduces bridge boards that extend weld legs in the horizontal direction (another dimension) rather than being constrained by the vertical width of the functional board. The bridge boards create additional pathways for weld legs to connect to the bottom board, effectively increasing the number of connections without increasing the functional board's width.
Solution Approach 2:
The bridge boards act as intermediary components between the functional board and the bottom board. These intermediaries provide additional connection points and extend the weld leg pathways, allowing more weld legs to be formed without requiring a wider functional board.
2Quantity of substance
If additional connectors are welded to increase connecting pins, then the number of connecting pins increases, but the device complexity increases
Solution Approach 1:
The patent merges the functions of the functional board, bridge boards, and bottom board into an integrated connection structure. The bridge boards are seamlessly incorporated into the existing board assembly, providing additional connecting pins without requiring separate additional connector components, thus increasing connectivity while minimizing complexity increase.
Solution Approach 2:
The bridge boards serve multiple functions: they extend weld legs, provide additional connection points, and maintain structural integrity. This multi-functionality allows the structure to achieve more connecting pins without proportionally increasing complexity, as the same components perform multiple roles.
Data Source
AI summary
A board-to-board connection structure for a PCB is disclosed. When a bottom board is welded to a functional board, weld legs thereof can be expanded in a perpendicular direction by means of a first bridge board, and the number of the weld legs of the bottom board to the functional board is no longer limited by the width of the functional board; a first partition board can prevent a short circuit between a third pad and a fourth pad on the functional board, and isolate a sixth pad on the first bridge board from a first pad on the bottom board; and at the same time, the first partition board can connect a second pad on the bottom board to a fifth pad of the first bridge board.