High-Frequency Power Supply Line Positioning and Holding
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Solution Overview
Problem
The existing power supply lines for high-frequency current face issues with unstable positioning of inner and outer tube portions, increased high-frequency resistance, high production costs, and difficulties in securely fixing and positioning the power supply lines in trolley systems due to material limitations and design flaws.
Innovation Solution
The power supply line design incorporates multiple connecting portions between the inner and outer tube portions, with raised connecting portions and guide grooves to enhance positioning accuracy and throughput, and a holding structure with flat shoulder or protrusion and groove configurations to prevent upward removal and rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single connecting portion is used to connect inner and outer tube portions, then the structure is simple, but the positioning accuracy becomes unstable and high-frequency resistance increases
Solution Approach 1:
The single connecting portion is divided into multiple connecting portions (first, second, third connecting portions) distributed around the circumference. This segmentation improves positioning stability and reduces high-frequency resistance by providing multiple contact points, while each individual connecting portion remains structurally simple.
2Manufacturing precision
If inner and outer tube portions are formed as one piece from a single copper plate, then positioning accuracy is improved, but production cost increases and throughput decreases
Solution Approach 1:
The conductor is divided into separately formable inner tube portion and outer tube portion that are connected through connecting portions. This allows independent manufacturing of each tube portion, improving production throughput and reducing costs, while the connecting portions ensure proper positioning and electrical contact.
Solution Approach 2:
The connecting portions serve as intermediaries between the inner and outer tube portions, enabling separate manufacturing of the tubes while maintaining their positional relationship and electrical connection, thus resolving the conflict between separate manufacturing and positioning accuracy.
3Reliability
If the holding member recess portion is formed to conform to the circular cross-section of the power supply line, then the power supply line can be held, but it can be easily removed upward and rotated
Solution Approach 1:
The recess portion is designed with asymmetric features including a flat bottom surface and step-like stoppers that create an asymmetric engagement geometry. This prevents the circular power supply line from being easily removed upward or rotated, while still allowing for installation. The asymmetric design creates mechanical interference that resists unwanted movements.
Solution Approach 2:
The recess portion incorporates a groove that engages with a protrusion on the power supply line, creating a curved engagement interface. This curved geometry, combined with the flat bottom surface, provides both holding capability and resistance to rotation and upward removal.
Data Source
AI summary
A power supply line for high-frequency current has a two-layered tubular conductor including an inner tube portion and an outer tube portion which is concentric to the inner tube portion and integrally linked thereto by four connecting portions along the entire length in the longitudinal direction. The four connecting portions are circumferentially disposed at predetermined intervals. By providing the four connection portions between the inner tube portion and the outer tube portion, it is possible to more accurately position the inner tube portion and to reduce high frequency resistance when compared with the likes of conventional power supply lines for high-frequency current having only one connecting portion between an inner tube portion and an outer tube portion.