Shield Connector Multi-Point Fixing for Impedance Stability
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Solution Overview
Problem
Conventional shield connectors fail to effectively suppress rattling and inclination between the inner housing and base, leading to impedance mismatches and deterioration of communication quality in shielded cables.
Innovation Solution
The shield connector features a base and inner housing with front-rear and vertical restricting convex portions and corresponding cut and hole configurations that engage to restrict relative movements and inclination, ensuring stable positioning and preventing impedance changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the inner housing and base are fixed at one position only, then the structure is simple, but the rattling and inclination between inner housing and base cannot be effectively suppressed
Solution Approach 1:
The fixing structure is segmented into multiple independent fixing positions distributed around the inner housing and base. Each fixing position includes corresponding convex portions and concave portions that work independently to restrict movement in different directions, collectively achieving comprehensive stability while maintaining structural simplicity
Solution Approach 2:
The fixing structure transitions from single-point fixation to multi-point fixation distributed in multiple dimensions around the inner housing and base. The convex and concave portions are arranged at different angular positions and heights, creating a three-dimensional fixing network that effectively suppresses rattling and inclination
2Stability of the object's composition
If multiple fixing positions are added to suppress rattling, then the stability improves, but the device complexity increases
Solution Approach 1:
Multiple fixing positions are merged into an integrated structure where the convex portions and concave portions form a unified fixing system. The fixing features are combined with the overall housing and base geometry, achieving multi-point fixation without adding separate components or complex assembly steps
Solution Approach 2:
The convex and concave portions are designed to automatically engage and fix the inner housing to the base through their geometric interlocking. The structure self-fixes at multiple positions without requiring additional fasteners, adhesives, or complex assembly operations, maintaining simplicity while achieving stable fixation
Data Source
AI summary
A shield connector includes an inner housing to hold terminals connected to wires and a shield shell to accommodate the inner housing and the end of the shielded cable. The shield shell includes a base and a cover to cover the inner housing. The base includes a bottom plate to cover a lower surface of the inner housing and base-side plates to cover side surfaces of the inner housing. A front-rear restricting convex portion extends vertically and engages a front-rear restricting cut to restrict relative movements of the inner housing and the base in a front-rear direction. A vertical restricting convex portion engages a vertical restricting hole to restrict relative vertical movements of the inner housing and the base.