Modular Connector Assembly Positioning and Signal Integrity
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Solution Overview
Problem
Modular electrical connector assemblies face challenges in maintaining accurate conductor positioning and signal integrity due to coupling and cross-talk issues, especially as signaling speeds increase, while also requiring compact designs and cost reduction.
Innovation Solution
The connector assembly uses a modular design with overmoulded lead frame assemblies, where sub-modules are assembled to form conductor modules with precise positioning structures, allowing reliable alignment and robust construction, and includes features like retaining structures and stand-off structures to prevent interference and enhance signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conductors are arranged in a compact modular connector assembly, then the connector size is reduced and manufacturing cost is lowered, but the coupling and cross-talk between conductors increases due to reduced distance
Solution Approach 1:
The connector assembly is divided into multiple conductor modules, each containing a subset of conductors. This segmentation allows for better spacing and positioning control within each module while maintaining overall compactness. The housing is also segmented with dedicated compartments for each conductor module, enabling precise positioning that reduces unwanted electromagnetic coupling between adjacent conductors.
Solution Approach 2:
Different positioning structures and spacing configurations are applied to different conductor modules based on their specific signal requirements. Critical signal pairs receive enhanced spacing or shielding arrangements, while less sensitive conductors use standard positioning. This localized optimization maintains signal integrity for high-speed signals while preserving overall connector compactness.
2Manufacturing precision
If conductor modules are pre-assembled from sub-modules, then assembly reliability and positioning accuracy are improved, but the device complexity and number of components increases
Solution Approach 1:
Conductor modules are pre-assembled with integrated positioning structures built into the housing during the housing manufacturing process. Alignment features,定位 pins, and spacing elements are incorporated into the housing design before final conductor module assembly, ensuring that when sub-modules are combined, the conductors automatically achieve precise relative positioning without requiring additional adjustment or complex fixtures.
Solution Approach 2:
Multiple positioning functions are merged into integrated structures. The housing contains both mechanical support and positioning features, alignment pins serve both as location references and as mechanical constraints, and the conductor module design combines electrical connectivity with structural alignment. This merging reduces the number of separate positioning components needed while maintaining high positioning accuracy.
Data Source
AI summary
A connector assembly is provided which includes a housing and at least one conductor module. The conductor module comprises at least a first sub-module and a second sub-module attached together to form the conductor module. The conductor module is at least partially received in the housing. The housing and the first sub-module include cooperating positioning structures for positioning the at least one conductor module into the housing such that the position of the second sub-module with respect to the housing is determined by the position of the first sub-module with respect to the housing in at least a first direction (X; Z). A connector assembly is also provided in which at least one contact includes at least one contact beam of which a part is resiliently displaceable substantially parallel to a side wall of the housing from a preload position to a second position for receiving a mating contact. The housing includes a stand-off structure configured to cooperate with at least a portion of the contact to provide and maintain a separation between at least the contact portion and the first side wall in and between the preload position and the second position.