Electrical Connector Two-Step Assembly Staggered Retention
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Solution Overview
Problem
Existing electrical connectors with insulative housings and contact modules suffer from unstable retention due to the securing mechanism, which can lead to potential disconnection issues between printed circuit boards.
Innovation Solution
An electrical connector design featuring an insulative housing with a contact module assembled via two perpendicular steps, utilizing protrusions and ribs in a staggered arrangement to securely engage the contact module, ensuring reliable retention through multiple engagement points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contacts are secured to the housing at the middle section via a securing block, then the contacts are retained to the housing, but the retention is unstable and may cause disconnection
Solution Approach 1:
The housing is divided into multiple retention cavities, each containing engagement protrusions that work with corresponding engagement grooves on the contact modules. This segmentation distributes the retention force across multiple points rather than relying on a single securing block, thereby improving retention stability while maintaining structural simplicity
Solution Approach 2:
The contact modules are nested within the housing structure, with engagement protrusions fitting into engagement grooves in a nested manner. This nested arrangement provides stable retention through precise geometric interlocking, eliminating the need for additional securing blocks and reducing overall device complexity
2Reliability
If the contact module is assembled to the housing in a single step, then the assembly process is simple, but the retention stability is insufficient
Solution Approach 1:
The engagement protrusions and grooves are pre-formed during the molding process of the housing and contact modules respectively. This preliminary action ensures that when the contact modules are inserted into the housing, the engagement features are already in position, providing stable retention without requiring complex multi-step assembly operations
Solution Approach 2:
The engagement protrusions and grooves are designed to automatically align and engage when the contact modules are inserted into the housing. This self-aligning, self-engaging mechanism provides stable retention through the staggered arrangement of engagement features, eliminating the need for additional securing operations or complex assembly tools
3Reliability
If multiple engagement points are used to secure the contact module, then retention stability is improved, but the device structure becomes more complex
Solution Approach 1:
Multiple engagement protrusions are integrated into the housing structure as a unified feature set, and multiple engagement grooves are formed on the contact modules as corresponding features. This merging of multiple engagement points into the basic structural design provides stable retention through distributed loading without adding separate components or complex assembly mechanisms
Solution Approach 2:
The engagement protrusions and grooves serve dual functions: they provide mechanical retention through the staggered engagement arrangement and simultaneously guide the alignment of contact modules during assembly. This multi-functionality achieves stable retention with a simple geometric feature set, avoiding the need for separate alignment and retention mechanisms
Data Source
AI summary
An electrical connector includes an insulative housing and a contact module essentially composed of a plurality of contacts integrally formed within an insulator via an insert-molding process wherein the contact module is assembled to the housing via two steps along different directions perpendicular to each other. The housing forms a plurality of protrusions engaged with the corresponding ribs of contact module in the vertical direction so as to retain the contact module to the housing reliably. All the insulator, the contacts and the housing are arranged in a staggered manner.