SCA Connector Chamfer for Blind Mating Alignment
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Solution Overview
Problem
Current SCA connectors often fail to mate properly due to binding issues when the angle of plugging a disk drive into a midplane diverges from perpendicular, preventing alignment of the plug and receptacle connectors despite conforming to industry standards.
Innovation Solution
The introduction of a chamfer at one or both ends of the insulative shell of the receptacle SCA connector modifies the D-shaped housing, allowing for smoother mating by preventing binding and facilitating alignment of the plug and receptacle connectors, even in cases of misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the plug and receptacle SCA connectors are designed to conform to SCA-2 industry standard, then the connector compatibility and standardization are improved, but the mating reliability deteriorates when plugging angle diverges from perpendicular
Solution Approach 1:
The patent modifies the geometric parameters of the receptacle connector by adding a chamfer to the insulative shell. This parameter change allows the connector to accommodate varying plugging angles while maintaining reliable contact engagement, thus improving mating reliability without sacrificing standardization compatibility
Solution Approach 2:
The chamfer is pre-formed on the receptacle connector housing before mating occurs. This preliminary geometric modification prepares the connector to guide and accommodate the plug connector at non-perpendicular angles, preventing binding before contact engagement can occur
2Ease of manufacture
If the plug and receptacle SCA connectors are designed with D-shaped housing conforming to standard, then the connector structure and manufacturing are simplified, but the ease of operation deteriorates due to binding during mating
Solution Approach 1:
Instead of modifying the entire D-shaped housing structure, the patent applies a localized chamfer only to the specific region of the insulative shell where binding occurs during mating. This localized modification maintains the overall simple D-shaped structure for ease of manufacture while improving ease of operation by eliminating the binding issue
3Ease of operation
If the alignment guides are designed to facilitate blind mating, then the ease of operation is improved, but the device complexity increases due to additional structural features
Solution Approach 1:
The patent combines the alignment function with the existing insulative shell structure by adding a chamfer to the same component that houses the alignment guides. This merging approach improves blind mating capability through the chamfer's angle-correcting function without adding separate structural features, thus avoiding increased device complexity
Data Source
AI summary
Described is a single connector attachment (SCA) connector that improves blind mating between plug and receptacle SCA connectors. The SCA connector has an insulative shell with opposing end walls and opposing sidewalls. The end walls and sidewalls define a substantially rectangular recess within which a plurality of electrical contacts is disposed. One of the end walls of the shell has a chamfer. The slope of the chamfer enables plug and receptacle SCA connectors to continue coming together although their respective housings may come against each other before the alignment guiding features of the SCA connectors are able to achieve alignment.