Connector Strip Layout for PCB Clearance Without Dummy Poles
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Solution Overview
Problem
Existing connector strips face challenges in achieving increased clearances and creepage distances without enlarging their overall dimensions, particularly when accommodating special potentials like ground potential, and require dummy poles or increased contact spacing.
Innovation Solution
The connector strip design allows for locally increased distances between soldering sections without altering the overall size, achieved by varying the distance between adjacent soldering sections while maintaining uniform contact spacing for plug-in contacts, using offset soldering sections and connecting sections with mirror symmetry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the distance between soldering sections is increased to achieve greater clearances and creepage distances, then safety and insulation performance are improved, but the overall dimensions of the connector strip increase
Solution Approach 1:
The patent applies local quality by differentiating the spacing between soldering sections from the spacing between plug-in contacts. Specifically, the distance between soldering sections of adjacent contact elements is designed to be greater than the contact spacing, creating locally increased clearances and creepage distances only in the soldering region while maintaining uniform contact spacing on the plug-in contact side. This resolves the contradiction by improving reliability locally without increasing the overall connector strip dimensions.
2Reliability
If dummy poles are inserted to increase clearances, then insulation performance is improved, but the device complexity and installation space increase
Solution Approach 1:
The patent extracts the unnecessary dummy poles from the connector strip design. Instead of inserting additional dummy contact elements to achieve required clearances, the invention modifies the spacing between soldering sections of existing contact elements. By removing dummy poles and adjusting soldering section distances, the patent reduces device complexity while maintaining the required clearance and creepage distances for insulation performance.
3Reliability
If the contact spacing on the plug-in contact side is increased to achieve necessary clearances, then insulation performance is improved, but the installation space and overall size increase
Solution Approach 1:
The patent segments the connector strip into two distinct regions with different spacing requirements: the plug-in contact region maintains uniform, compact contact spacing for space efficiency, while the soldering region implements increased distances between soldering sections for insulation performance. This segmentation allows each region to be optimized independently, achieving the required clearance distances without increasing the overall installation space or area of the connector strip.
Data Source
AI summary
A connector strip configured for soldering to an electrical printed circuit board, having an insulating housing and multiple electrical contact elements that are fixed in place in the insulating housing and are arranged next to, and spaced apart from, one another in a row direction, wherein each contact element has at least one electrical plug-in contact that, on a mating face side of the connector strip, is configured for insertion of a mating plug contact associated as a mating part. At least one soldering section is configured for soldering into or soldering onto a solder terminal of the electrical printed circuit board. The electrical plug-in contacts are spaced uniformly apart from one another in a predetermined contact spacing in the row direction.