PCB Connector Insulating Wall for Creepage and Alignment
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Solution Overview
Problem
Existing high-voltage power supply connection members face challenges in maintaining accurate positioning on circuit boards while ensuring a sufficient creepage distance between board connection portions.
Innovation Solution
A connector design featuring a housing with a plate-shaped insulating wall between adjacent board connection portions, where the insulating wall protrudes further than the board connection portions and is positioned within an insertion hole on the circuit board, enhancing alignment and creepage distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ribs are used to separate adjacent output protrusions, then creepage distance between connection portions is ensured, but positioning accuracy with respect to the circuit board deteriorates
Solution Approach 1:
The insulating wall is divided into multiple plate-shaped insulating walls, each disposed between adjacent board connection portions. This segmentation allows each insulating wall to independently provide creepage distance while the collective arrangement maintains positioning accuracy through coordinated insertion into respective insertion holes.
Solution Approach 2:
The plate-shaped insulating walls act as intermediary elements between adjacent board connection portions. These insulating walls protrude from the housing and are inserted into insertion holes of the circuit board, serving as mediators that both ensure creepage distance and enable precise positioning through the insertion hole interface.
2Manufacturing precision
If the insulating wall protrudes further than board connection portions, then positioning accuracy is improved through insertion hole engagement, but device complexity increases
Solution Approach 1:
The plate-shaped insulating walls serve multiple functions simultaneously: they provide electrical insulation between adjacent board connection portions, ensure adequate creepage distance, and enable precise positioning by engaging with insertion holes in the circuit board. This multi-functionality reduces the need for separate positioning components, thereby not increasing overall device complexity.
Solution Approach 2:
The insulating walls extend in the protruding direction beyond the board connection portions, utilizing the dimensional space along the insertion direction. This dimensional extension allows the insulating walls to engage with insertion holes for positioning while maintaining insulation function, resolving the contradiction without adding complex structural elements.
Data Source
AI summary
A connector includes a housing and a pair of terminal fittings accommodated in the housing. The terminal fittings respectively include board connection portions each protruding from a lower surface (one surface) of a terminal fixing portion of the housing and each positioned in a connection hole of the circuit board. The housing includes a plate-shaped insulating wall disposed between the board connection portions, which are adjacent to each other, and protruding downward from the lower surface (one surface) of the terminal fixing portion of the housing. A protruding end of the insulating wall is farther from the lower surfaceN (one surface) of the terminal fixing portion of the housing than protruding ends of the board connection portions are. The insulating wall is disposed in an insertion hole of the circuit board in a positioned state.