Test Point Adaptor Conical Contact Sealing
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Solution Overview
Problem
Conventional sliding connections in test point adaptors for coaxial cables often lack reliable electrical continuity and watertight seals, leading to potential signal leakage and structural damage during testing, especially with increasing digital signal usage in communication networks.
Innovation Solution
A test point adaptor design featuring a main body with a center conductor, a transverse test body with an outer conductive sleeve and conical contact surfaces, and a cap with an annular groove and sealing member, providing a sliding connection that maintains electrical continuity and watertight sealing without damaging the coaxial cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sliding connection is used in the test point adaptor, then the ease of operation is improved, but the reliability of electrical continuity deteriorates
Solution Approach 1:
The contact surfaces are changed from flat to conical geometry, creating a taper ratio that ensures continuous radial contact between the cap and outer sleeve during sliding engagement. This geometric parameter change maintains reliable electrical continuity while preserving the ease of sliding connection.
Solution Approach 2:
The conical contact surfaces act as an intermediary mechanism between the sliding cap and the outer sleeve, distributing contact pressure along the conical interface to ensure continuous electrical contact throughout the sliding engagement process.
2Ease of operation
If a sliding connection is used in the test point adaptor, then the ease of operation is improved, but the sealing performance deteriorates
Solution Approach 1:
The sealing function is segmented from the sliding connection function. The sealing member is positioned at the interface between the cap and outer sleeve, creating a dedicated sealing zone that operates independently from the sliding engagement mechanism, thereby maintaining both ease of operation and sealing performance.
Solution Approach 2:
The sealing member acts as an intermediary element between the cap and outer sleeve, providing a watertight barrier that prevents RF signal leakage while allowing the sliding connection to function independently.
3Reliability
If increased force is applied during sliding connection, then the electrical continuity is improved, but structural damage to the coaxial cable may occur
Solution Approach 1:
The conical contact surfaces change the force distribution pattern from concentrated point contact to distributed linear contact along the cone surface. This geometric parameter change allows sufficient contact force for electrical continuity while distributing the load to prevent structural damage to the coaxial cable.
Solution Approach 2:
The conical geometry provides a gradual engagement path that cushions the insertion force, preventing sudden impact loads that could damage the coaxial cable while ensuring progressive establishment of electrical contact.
Data Source
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AI summary
A test point adaptor for coaxial cables includes a main body, a test body, and a cap. The main body has a first longitudinal axis and includes a first end comprising a first interface, a second end comprising a second interface, and a first center conductor extending at least from the first interface lo the second interface. The test body has a second longitudinal axis arranged transversely to the main body and includes an outer conductive sleeve, a test body end comprising a third interface, an electrically conductive contact member in electrical contact with the first center conductor, and a gripping arrangement electrically coupled with the electrically conductive contact member. The third interface includes a conical contact surface of the outer conductive sleeve. The cap includes a sleeve configured to matingly engage an outer surface of the outer conductive sleeve.