RF Coaxial Connector With Elastic Axial Thrust
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Solution Overview
Problem
Existing RF coaxial connectors have high manufacturing costs due to machined components and unreliable electrical contacts, leading to reduced performance.
Innovation Solution
A connector design featuring slidably assembled outer and center conductors with bent electrical contact pins, elastic elements for axial thrust, and an insulator to enhance electrical contact reliability and reduce return loss, using a single conductive component formed by stamping and insert molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a machined contact ring component is used at the upper end of the RF coaxial connector, then the electrical contact is maintained, but the manufacturing cost is high
Solution Approach 1:
The contact ring and housing are merged into a single integrated component formed by stamping and insert molding. The contact pins are directly formed as integral parts of the contact ring structure, eliminating the need for separate machined contact ring components and reducing manufacturing complexity while maintaining electrical contact reliability
Solution Approach 2:
The manufacturing method changes from traditional machining to stamping and insert molding processes. This parameter change in the manufacturing approach significantly reduces production costs while the elastic sheet material properties are optimized to maintain reliable electrical contact through controlled pressure
2Device complexity
If the contact ring only contacts the upper PCB at its annular end surface, then the structure is simple, but the electrical contact is unreliable
Solution Approach 1:
The contact ring is segmented into multiple contact pins distributed around its circumference rather than a single annular contact surface. This segmentation provides multiple discrete electrical contact points, improving reliability by ensuring that if one contact point fails, others remain functional
Solution Approach 2:
The elastic sheet acts as an intermediary element between the contact ring and the housing. It transmits and distributes pressure uniformly to multiple contact pins, ensuring reliable electrical contact across all contact points while accommodating minor misalignments or variations in PCB positioning
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 improves electrical contact reliability and performance while reducing manufacturing costs by using stamped metal components and insert molding, ensuring consistent and efficient electrical connections between circuit boards.
Implementation Method 1
a first elastic element located outside of at least a portion of the outer conductor, one end of which is abutted against the insulation seat, and adapted to apply an axial thrust to the first outer conductor
Implementation Method 2
the first outer conductor comprising at least one electrical contact pins configured to be in electrical contact with a first electronic component
Data Source
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AI summary
The connector includes: an outer conductor (110, 120) comprising a first outer conductor (110) and a second outer conductor (120) which are slidably assembled together, the first outer conductor comprising at least one electrical contact pins (111) configured to be in electrical contact with a first electronic component (1); a center conductor (210, 220) provided in the outer conductor, and comprising a first center conductor (210) and a second center conductor (220) which are slidably assembled together; an insulation seat (140) molded on the first outer conductor by insert molding, the at least one electrical contact pins protruding out of a surface of the insulation seat; and a first elastic element (150) located outside of at least a portion of the outer conductor, one end of which is abutted against the insulation seat and adapted to apply an axial thrust to the first outer conductor. The at least one electrical contact pins of the first center conductor may be in reliable electrical contact with the first electronic component, thereby improving the electrical contact performance of the connector.