Cable Harness Partial Cover for Spiral Shield Stability
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Solution Overview
Problem
Coaxial cables with spiral shields often experience degraded transmission characteristics due to uneven separation of wires when exposed and sandwiched, leading to performance issues.
Innovation Solution
A cable harness design where the outer conductor's partially-exposed portion is covered by a second insulator's partial cover, preventing uneven separation of wires and maintaining transmission quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a spiral shield is used as an outer conductor to reduce the outer diameter of the coaxial cable, then the cable size is reduced, but the wires of the spiral shield are relatively easy to be separated from one another when exposed and sandwiched, causing transmission characteristics to be degraded
Solution Approach 1:
The patent applies preliminary action by pre-arranging the spiral shield wires within a groove structure before the sandwiching operation. The groove confines the wires in their proper positions, preventing them from separating unevenly when the connector components are assembled. This preliminary structural arrangement ensures that the wires maintain their intended configuration throughout the assembly process, thereby preserving transmission characteristics while still using the space-efficient spiral shield design.
2Ease of manufacture
If the outer conductor is formed of a spiral shield for easier manufacturing and smaller size, then the cable becomes more compact and easier to manufacture, but the wires might be unevenly separated when exposed and sandwiched between connector components
Solution Approach 1:
The patent employs a groove structure that acts as a flexible constraint mechanism. The groove is formed in the insulator material and provides a flexible yet effective pathway that guides and confines the spiral shield wires. This groove structure allows the wires to be easily inserted and assembled while simultaneously preventing their uneven separation during the sandwiching process, thus resolving the contradiction between ease of manufacture and manufacturing precision.
3Ease of operation
If the spiral shield wires are exposed for connection to the connector, then electrical connection is enabled, but the wires are prone to uneven separation leading to degraded transmission characteristics
Solution Approach 1:
The patent applies the nesting principle by placing the spiral shield wires within a groove that is nested within the insulator structure. The groove is formed as a recess or cavity within the insulator material, creating a nested configuration where the conductive wires are housed within the insulating groove. This nested arrangement allows the wires to be exposed for electrical connection to the connector while simultaneously providing structural confinement that prevents uneven separation, thereby maintaining both ease of operation and reliability.
Data Source
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AI summary
A cable harness comprises a coaxial cable and a connector. The coaxial cable comprises an outer conductor formed of a plurality of wires and a second insulator covering the outer conductor. The outer conductor has a partially-exposed portion. The partially-exposed portion is formed with a connection portion. The second insulator has a partial cover. In a perpendicular plane perpendicular to the front-rear direction, the partial cover covers the partially-exposed portion while at least the connection portion is exposed. The connector comprises a second conductor. The second conductor has a pressure-holding portion. The pressure-holding portion presses the partial cover to hold the partial cover and is connected to the connection portion in a perpendicular direction perpendicular to the front-rear direction.