QSFP-DD Connector Contact Module Assembly for Stable 50 Gbps Signals
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Solution Overview
Problem
Existing electrical connector assemblies with separate high-speed and sideband contact modules are cumbersome and complicated to assemble.
Innovation Solution
The differential pair contacts and sideband contacts are fixed to the insulator in different ways, allowing for easier assembly and a firmer, more stable structure, with the contact module being fixed as a whole through a metallic shell and connected to a metal cage for installation on a circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the high-speed contact module and sideband contact module are separated and assembled respectively, then the assembly process becomes complicated and cumbersome, but using a unified contact module structure simplifies the assembly process
Solution Approach 1:
The patent merges the high-speed contact module and sideband contact module into a single integrated contact module structure. The insulator houses both differential pair contacts (for high-speed signals) and sideband contacts (for low-speed signals) within one unified assembly, eliminating the need for separate assembly operations and reducing manufacturing complexity.
Solution Approach 2:
While maintaining a unified structure, the patent segments the contact module into functional regions: the upper part contains differential pair contacts for high-speed signals, while the lower part contains sideband contacts for low-speed signals. This segmentation allows different contact types to coexist in one module without interfering with each other's assembly or function.
2Stability of the object's composition
If differential pair contacts and sideband contacts are fixed to the insulator in the same way, then the manufacturing process is simpler, but fixing them in different ways provides a firmer and more stable structure
Solution Approach 1:
The patent applies different fixing methods to different contact types based on their specific requirements. Differential pair contacts are fixed using a first method optimized for high-speed signal integrity, while sideband contacts are fixed using a second method optimized for low-speed connections. This local differentiation enhances overall structural stability without significantly complicating the manufacturing process.
3Volume of moving object
If the contact module is designed as a stacked structure with upper and lower parts, then the structure becomes more compact, but the assembly process becomes more complex
Solution Approach 1:
The patent implements a stacked structure where the lower part of the contact module is positioned within or adjacent to the upper part, creating a compact vertical arrangement. The insulator serves as a common housing for both parts, with the differential pair contacts in the upper section and sideband contacts in the lower section, maximizing space utilization while maintaining structural integrity.
Data Source
AI summary
An electrical connector assembly includes: an insulative housing forming a front mating slot and a rear receiving space; a contact module received in the insulative housing and including an upper part and a lower part stacked with each other, each of the upper part and the lower part including a differential pair contact module having an insulator and a plurality of differential pair contact fixed in the insulator, each of the differential pair contact having a mating portion and a tail portion opposite to the mating portion; and a sideband contact module comprising sideband contacts, wherein the differential pair contacts and the sideband contacts are fixed to the insulator in different ways.