Surface Mount Coaxial Connector Insert Molding
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Solution Overview
Problem
Surface mount type coaxial connectors face challenges in achieving a lower profile and reduced size due to the need for a thick insulating base for press fitting, and difficulties in maintaining the projecting portion between signal and ground connections as the connector size is reduced.
Innovation Solution
A coaxial connector design featuring a cylindrical signal conductor with axial slits, an insulator with a circular convex portion, and a ground conductor with circular fittings, all integrally formed by insert molding, allowing for reduced size and low profile while ensuring contact stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If press fitting method is used to ensure contact stability, then connection reliability is improved, but insulator thickness increases preventing lower profile
Solution Approach 1:
The patent merges the insulator base and the projecting portion into a single integrated insulator structure formed by insert molding. This integration eliminates the need for separate press fitting operations while maintaining contact stability, thereby achieving lower profile without sacrificing connection reliability.
Solution Approach 2:
The insert molding process performs the contact stabilization action during the initial molding stage itself, rather than requiring subsequent press fitting. The projecting portion is pre-formed as part of the insulator base structure, ensuring contact stability is built-in from the start while minimizing overall thickness.
2Volume of moving object
If connector size is reduced, then space occupation is decreased, but maintaining projecting portion becomes difficult
Solution Approach 1:
The patent implements a nested structure where the signal conductor fitting portion is positioned within the ground conductor fitting portion, and the insulator projecting portion is integrated within the overall insulator base. This nesting allows the connector to maintain its essential structural features in a compact form, reducing overall size while preserving the necessary projecting portion for contact stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design enables a compact, low-profile coaxial connector with improved contact stability and reduced size, enabling higher frequency signal handling and reliable connections.
Implementation Method 1
an insulator base having a projecting portion of which a transparent hole is provided therein with the contact conductor for signal connection
Implementation Method 2
this coaxial connector is configured such that the contact conductor for signal connection and the contact conductor for ground connection are press fitted into the insulator base
Data Source
AI summary
A surface mount type coaxial connector 1 to be mounted on a circuit wiring board 50 comprises: a contact 10 for signals having a cylindrical fitting portion 11 for signals divided by first slits 111a housing 20 having a circular convex portion 22 which surrounds the fitting portion 11 for signals via a first space S1; and a ground shell 30 having a circular fitting portion 32 for ground which surrounds the convex portion 22 via a second space S2, and the contact 10 for signals, the housing 20, and the ground shell 30 are integrally formed by insert molding.