Cable Seal Actuator With Ratchet-Limited Compression
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Solution Overview
Problem
Existing telecommunications enclosures face challenges in maintaining a secure and re-enterable seal for cables, as traditional seals can be compromised by moisture and contaminants, and require destruction for access.
Innovation Solution
A cable sealing unit with an actuator that applies spring pressure to a sealant using a ratchet arrangement to prevent over-compression, allowing for adjustable sealing and re-entry capabilities without damaging the enclosure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional seals are used in telecommunications enclosures, then sealing effectiveness is achieved, but the enclosure cannot be re-entered without destruction
Solution Approach 1:
The patent employs a dynamic seal compression mechanism where the seal compression force can be adjusted and released. The actuator system allows the seal to be compressed during installation for initial sealing, then the compression can be partially released to enable re-entry, while maintaining sufficient sealing force to prevent moisture intrusion. This dynamic adjustment resolves the contradiction between permanent sealing and re-entry capability.
Solution Approach 2:
The patent implements preliminary seal compression during the installation phase, where the actuator applies full compression force to ensure proper sealing before the enclosure is sealed. This preliminary action establishes the seal integrity, and subsequent controlled release of compression allows re-entry without compromising the fundamental seal structure, enabling both reliable sealing and future access.
2Reliability
If sealant is over-compressed to ensure sealing, then seal effectiveness improves, but the sealant may be damaged or the enclosure becomes non-re-enterable
Solution Approach 1:
The ratchet arrangement provides mechanical feedback that prevents over-compression of the sealant. The ratchet mechanism allows compression force to be applied in one direction while preventing reverse motion, enabling the operator to compress the sealant to the optimal level without exceeding it. This feedback mechanism ensures sufficient seal effectiveness while maintaining the ability to release compression for re-entry.
Solution Approach 2:
The actuator system with ratchet arrangement enables dynamic control of sealant compression. The system can apply compression force when needed for sealing, then selectively release the force to allow re-entry. The ratchet prevents accidental over-compression during installation, and the controlled release mechanism enables future access without damaging the sealant, resolving the contradiction between effective sealing and re-entry ease.
3Adaptability or versatility
If a fixed seal compression mechanism is used, then manufacturing is simple, but the seal cannot be adjusted for different cable configurations
Solution Approach 1:
The patent replaces a fixed compression mechanism with a dynamic actuator system that can adjust seal compression levels. The actuator includes a ratchet arrangement and release mechanism that allow the seal compression to be adjusted during installation and released for re-entry. This dynamic system provides adaptability for different cable configurations while using mechanical components that keep the overall complexity manageable through straightforward mechanical design.
Solution Approach 2:
The ratchet arrangement in the actuator mechanism provides self-regulating compression control. The ratchet automatically prevents over-compression by blocking reverse motion at the optimal compression point, eliminating the need for complex external control systems. This self-service feature enables adjustable sealing for various cable configurations while keeping the device complexity relatively low through inherent mechanical control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a reliable, adjustable, and re-enterable seal for telecommunications enclosures, effectively preventing moisture and contaminant intrusion while allowing for easy access and maintenance.
Implementation Method 1
The actuator includes a ratchet arrangement adapted to slip once a predetermined level of spring compression has been achieved to prevent over compression of the sealant.
Implementation Method 2
an actuator for applying spring pressure to a sealant of the cable sealing unit
Data Source
AI summary
The present disclosure relates to a cable sealing unit having an actuator for applying spring pressure to a sealant of the cable sealing unit. The actuator is adapted to prevent over compression of the sealant.