Optical Cable Strength Member Retention Assembly
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Solution Overview
Problem
Existing optical cable enclosure systems require tools for anchoring strength members, result in bulky designs due to coaxial compression inserts, and have inconvenient holding elements that are integral with the base or connected to the cable retention position, making installation difficult and inefficient.
Innovation Solution
A modular enclosure system with a separate reel and reel seat for winding and securing optical cable strength members, allowing easy installation without tools and reducing bulkiness by decoupling the strength member retention from the cable path, featuring a reel that can be pressure-fixed into a corresponding seat and designed for easy separation from the enclosure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw-type fasteners are used to anchor strength members, then reliable anchoring is achieved, but additional tools (screwdriver) are required and installation becomes more complex
Solution Approach 1:
The patent replaces the screw-type mechanical fastening system with a press-fit mechanical system. The retention block features a recess that receives the strength member end, and a compression insert that applies radial compression force to secure the strength member without requiring screws or additional tools. This substitution maintains anchoring reliability while dramatically simplifying installation.
Solution Approach 2:
The retention block and compression insert system is designed to be self-contained within the enclosure base. The compression insert automatically applies compression force when installed, eliminating the need for external tools or complex anchoring procedures. The system serves itself by integrating the anchoring function directly into the cable management structure.
2Reliability
If compression inserts are arranged coaxially with the cable, then strength members can be secured, but the enclosure becomes bulky
Solution Approach 1:
The patent transitions from a coaxial (one-dimensional) arrangement to a lateral (two-dimensional) arrangement. The retention block and compression insert are positioned laterally adjacent to the cable path rather than coaxially within it. This dimensional change allows strength member retention functionality to be added without increasing the cable path diameter, thereby preventing bulkiness in the enclosure.
3Device complexity
If holding elements are integral with the base, then structural simplicity is achieved, but installation and maintenance become inconvenient
Solution Approach 1:
The patent segments the retention functionality from the enclosure base by using a separate retention block that can be independently installed and removed. The retention block contains the recess and works with the compression insert to provide strength member retention. This segmentation allows the retention system to be easily installed, maintained, or replaced without affecting the base structure, significantly improving installation convenience and maintainability.
Data Source
Figure 1~2
Figure 3
Figure 3.1~3.2
AI summary
It is disclosed an enclosure for housing and fastening a lengthof optical cable, said optical cable having an outer sheath and a flexible strength member, wherein the enclosure comprises a fixing element and a retention assembly, said fixing element being adapted for engaging a portion of the outer sheath and said retention assembly being adapted for fastening said flexible strength member. The fixing element and the retention assembly are independent from each other. The retention assembly comprises a reel and a reel seat. The reel is adapted to receive at least one turn of the flexible strength member wound thereon and to be inserted without rotation into the reel seat. The reel seat is adapted for housing the reel. The reel seat is shaped at least partially mating the shape of the reel.