Grounding Adapter for Shielded Cable with Bonded Jacket
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Solution Overview
Problem
Shielded electronic communication cables face difficulties in connecting their metal foil shields to an electrical ground due to the shield being bonded to the outer jacket, making it challenging to establish an effective grounding mechanism.
Innovation Solution
A grounding adapter with a central band and extensions is designed to be wrapped around the inner jacket of the cable, allowing it to contact the shield and facilitate grounding by being integrated with a gland or P-clamp that connects to an electrical ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the shield is bonded to the outer jacket, then the cable structure is simplified and manufacturing is easier, but the shield cannot be easily connected to an electrical ground
Solution Approach 1:
The grounding adapter serves as an intermediary device that interfaces between the bonded shield and the grounding system. It includes a first contact point that engages with the shield and a second contact point that connects to ground, thereby mediating the grounding connection without requiring modification to the bonded cable structure.
Solution Approach 2:
The grounding adapter is divided into distinct functional segments: a body portion that interfaces with the cable, first contact points that engage the shield, and second contact points that connect to ground. This segmentation allows each component to perform its specific function independently while working together to achieve overall grounding.
2Strength
If the shield is bonded to the outer jacket, then the cable has better mechanical strength and water resistance, but the shield cannot be properly grounded
Solution Approach 1:
The grounding adapter acts as a mediator that preserves the bonded construction's mechanical integrity while establishing the necessary electrical ground connection. The adapter's design allows it to interface with the bonded shield without compromising the bond between the shield and outer jacket.
Solution Approach 2:
The grounding solution adds a new dimensional aspect to the cable assembly by introducing external grounding contacts that extend beyond the cable's bonded structure. This allows grounding functionality to be added without altering the original bonded construction in its primary dimension.
3Reliability
If a grounding mechanism is added to the bonded cable, then the shield can be grounded, but the device complexity increases
Solution Approach 1:
The grounding adapter is designed as a universal component that can be applied to various bonded cable configurations. It provides multiple contact points that can engage with different shield arrangements and offers both mechanical attachment and electrical grounding functions in a single device.
Solution Approach 2:
The grounding adapter combines multiple functions into a single integrated component: mechanical attachment to the cable, electrical contact with the shield, and connection to the grounding system. This merging reduces the overall complexity compared to using separate components for each function.
Data Source
AI summary
A grounding adapter to be used with a cable comprises a central band, a plurality of upper extensions, and a plurality of lower extensions. The central band may include an upper side, an opposing lower side, a left side, and an opposing right side to form a rectangle. The upper extensions may be spaced apart and coupled to the upper side of the central band. The lower extensions may be spaced apart and coupled to the lower side of the central band. Each upper extension and lower extension may have an isosceles triangle shape with a first side and a second side of equal length and a rounded corner therebetween. The lower extensions may be offset from the upper extensions such that a space between any two lower extensions aligns with an upper extension.