Connector Pin Housing Structure for Stable High-Frequency Spacing
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Solution Overview
Problem
The existing electrical connectors experience unstable holding positions of contact pins due to manufacturing tolerances, leading to variable separation distances and deteriorated signal transmission characteristics, especially in high-frequency bands.
Innovation Solution
The electrical connector design includes a housing with rectangular insertion holes and press-fitting mechanisms that securely sandwich contact pins, using flat receiving portions and second pressing ribs to maintain consistent separation distances and enhance signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a gap is provided between the inner peripheral surface of the insertion hole and the contact pin to allow insertion, then the contact pin can be inserted even with manufacturing tolerance variations, but the holding position becomes unstable and the separation distance cannot be kept constant
Solution Approach 1:
The insertion hole is divided into multiple functional sections: a first insertion portion with a larger diameter for initial insertion and tolerance accommodation, and a second insertion portion with a smaller diameter for precise positioning and stable holding. This segmentation allows the hole to perform both insertion and positioning functions separately, resolving the contradiction between ease of insertion and holding precision.
Solution Approach 2:
The first insertion portion with larger diameter performs the preliminary action of guiding and accepting the contact pin during insertion, accommodating manufacturing tolerances. Subsequently, the second insertion portion with smaller diameter performs the final positioning action, ensuring stable holding and constant separation distance. This preliminary action sequence resolves the contradiction by separating insertion and positioning functions.
2Adaptability or versatility
If the contact pin is loosely fitted in the insertion hole to accommodate manufacturing tolerances, then insertion is easier, but the contact pin rattles and the separation distance varies
Solution Approach 1:
The insertion hole is segmented into two distinct portions: the first insertion portion provides adaptability for easy insertion by accommodating manufacturing tolerances, while the second insertion portion ensures reliability by providing a tight fit that prevents rattling and maintains constant separation distance for stable signal transmission.
Solution Approach 2:
Different sections of the insertion hole have different local qualities: the first insertion portion has a larger diameter for adaptability and ease of insertion, while the second insertion portion has a smaller diameter for precision and reliability. This local quality differentiation allows the structure to simultaneously achieve insertion adaptability and signal transmission reliability.
3Ease of manufacture
If the separation distance between contact pins is not kept constant due to unstable holding positions, then manufacturing is more tolerant, but the signal transmission characteristics in high frequency band deteriorate
Solution Approach 1:
The insertion hole is segmented into a first insertion portion for tolerance accommodation and a second insertion portion for precision positioning. This segmentation enables the structure to simultaneously accept manufacturing tolerances during insertion while maintaining constant separation distance between contact pins for high-frequency signal transmission.
Solution Approach 2:
The first insertion portion performs the preliminary action of accommodating manufacturing tolerances during insertion, allowing ease of manufacture. The second insertion portion then performs the final positioning action that ensures constant separation distance, maintaining manufacturing precision for signal transmission characteristics.
Data Source
AI summary
An electrical connector includes a pair of contact pins and an insulating housing for containing the pair of contact pins therein. The contact pin includes a horizontally extending portion extending in an insertion and extraction direction of the mating connector and having a pair of surfaces, facing each other. The housing includes a cylindrical portion linearly extending in the insertion and extraction direction of the mating connector and containing the horizontally extending portion therein, and a pair of insertion holes passing through the cylindrical portion in the insertion and extraction direction of the mating connector and into which the horizontally extending portions of the pair of contact pins are respectively inserted. Each of the pair of insertion holes includes a first wall surface, a second wall surface, and a flat receiving portion formed on the first wall surface.