Rotatable Coaxial Connector Sleeve for Soldering Access
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Solution Overview
Problem
Conventional coaxial cable connectors require complex terminal processing and are difficult to attach at the connection site due to the lack of a guide for cutting the insulator and the rotational symmetry of the cable, which complicates soldering the central conductor.
Innovation Solution
A connector design featuring a rotatable inner sleeve with a cutout window that guides the cutting of the insulator and central conductor, allowing easy attachment and soldering by ensuring the cutout window does not intersect the central conductor, facilitating easier handling of the coaxial cable's curvature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If terminal processing is performed to expose the central conductor by removing the insulator, then the connector can be attached to the coaxial cable, but a dedicated terminal processing machine is required and the process becomes complex
Solution Approach 1:
The connector structure itself provides the cutting guide function through the inner sleeve and cylindrical member with cutout window, eliminating the need for external terminal processing machines. The insulator and central conductor are self-guided by the connector components during the cutting process.
Solution Approach 2:
The inner sleeve and cylindrical member serve multiple functions: they act as both the connector body and the cutting guide simultaneously. This multi-functional design integrates the attachment and cutting guidance functions into a single structure, reducing the need for separate dedicated tools.
2Reliability
If the outer conductor shell is attached to the front end of the coaxial cable, then electrical connection is achieved, but the solder window does not always face in a direction allowing easy soldering work due to cable curl
Solution Approach 1:
The cylindrical member is designed to be rotatable relative to the inner sleeve, allowing dynamic adjustment of the cutout window orientation. This rotation capability enables the solder window to be positioned in any desired direction, accommodating cable curls and making soldering accessible from any angle.
Solution Approach 2:
The cutout window is pre-positioned on the cylindrical member at the appropriate location before attachment. This preliminary positioning ensures that when the connector is attached, the solder window is already in a favorable position for soldering operations, anticipating the need for easy access.
3Reliability
If the outer conductor connecting portion is inserted between the insulator and outer conductor for electrical connection, then reliable electrical contact is achieved, but the outer conductor shell cannot be rotated with respect to the coaxial cable
Solution Approach 1:
The connector is divided into two rotatable segments: the inner sleeve and the cylindrical member. The cylindrical member can rotate relative to the inner sleeve, providing rotation capability for soldering access while the inner sleeve maintains the electrical connection through the outer conductor connecting portion.
Solution Approach 2:
The cutout window creates an asymmetric feature on the otherwise rotationally symmetric cylindrical member. This asymmetry provides a reference orientation for soldering while the rotational capability allows adjustment to achieve the desired orientation, resolving the conflict between electrical connection stability and soldering accessibility.
Data Source
AI summary
A connector includes an inner sleeve through which a central conductor and an insulator of a coaxial cable are passed, and an outer sleeve through which the central conductor, the insulator and a shield member of the coaxial cable are passed, the inner sleeve including a rotatable cylindrical member and having a cutout window opened by a predetermined angle range in a circumferential direction, a front end and a rear end of the cutout window in a direction along the central conductor coinciding with a front end of the central conductor and a front end of the insulator, respectively, the predetermined angle range of the cutout window being smaller than 180°, a straight line between both ends in the circumferential direction of the cutout window passing outside the central conductor.