Coaxial Connector Crimping Portions Nested Cable Design
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Solution Overview
Problem
Existing coaxial connectors face challenges in connecting multiple coaxial cables in parallel without increasing the size of the connector, due to limited space between crimping portions.
Innovation Solution
A coaxial connector design featuring crimping portions formed from a bent plate member with an inner hook and an outer hook, where the inner hook is shorter than the outer hook, allowing for efficient crimping of coaxial cables while reducing the space between adjacent crimping portions, thus preventing size increase.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple crimping portions are disposed on an external terminal to connect multiple coaxial cables in parallel, then the capability to connect multiple cables is improved, but the space between adjacent crimping portions increases leading to size increase
Solution Approach 1:
The crimping portion is formed by bending a plate member to follow the outer circumference of the coaxial cable, creating a nested structure where the plate member wraps around the cable. This nesting approach allows multiple crimping portions to be arranged in a compact circular pattern around the central conductor, maximizing space utilization and reducing the overall area occupied by multiple cable connections.
Solution Approach 2:
The invention transitions from a linear arrangement of crimping portions to a two-dimensional circular arrangement by bending the plate member to follow the outer circumference of the coaxial cable. This dimensional change allows multiple crimping portions to be positioned at different angular positions around the cable, effectively utilizing the radial dimension to reduce the space between adjacent crimping portions while maintaining the ability to connect multiple cables in parallel.
2Reliability
If the crimping portion is formed to tightly follow the outer circumference of the coaxial cable, then the connection reliability is improved, but the manufacturing complexity increases
Solution Approach 1:
The invention changes the geometric parameters of the crimping portion by defining specific hook lengths (inner hook shorter than outer hook) and their positions relative to the coaxial cable center. These parameter specifications provide clear manufacturing targets that simplify the bending process while ensuring the crimping portion follows the outer circumference of the cable, thereby maintaining connection reliability without excessive manufacturing complexity.
Solution Approach 2:
The crimping portion employs asymmetric hook design where the inner hook extends inward from the connection portion and is shorter than the outer hook which extends outward. This asymmetric configuration optimizes the crimping action by providing different functional characteristics for inner and outer hooks, improving connection reliability while the defined geometric relationships simplify the manufacturing process by providing clear design criteria.
Data Source
AI summary
A coaxial connector includes internal and external terminals, and an insulation member disposed between the terminals. The external terminal includes a holding portion that holds coaxial cables, and crimping portions. A crimping portion outermost in an arrangement direction of the cables is formed from a plate member bent to follow an outer circumference of the cable, and includes a connection portion connectable with the holding portion between both end portions in the arrangement direction. An inner hook extends inward in the arrangement direction from a point of intersection between the connection portion connectable with the holding portion and a virtual straight line orthogonal to the arrangement direction and passing a center of the cable, in a cross-sectional view orthogonal to a longitudinal direction of the cable. An outer hook extends outward in the arrangement direction from the point of intersection. The inner hook is shorter than the outer hook.