Dome-Type Optical Cable Junction Box With Adaptive Sealing
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Solution Overview
Problem
Conventional optical cable junction boxes lack sufficient fixing force and water-tightness, particularly when exposed to external forces, and have weak support for optical cables, leading to potential detachment and moisture ingress.
Innovation Solution
A dome-type mechanical optical cable junction box with a sealing unit that includes first and second pressing members and a deformable sealing member, coupled by a fastening unit, to enhance cable fixation and water-tightness, featuring a base member with support frames and a cover for airtight sealing, and additional components to prevent detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sealing structures are used with optical cables, then the sealing force is improved, but the support force for the cable becomes weak
Solution Approach 1:
The patent combines the sealing function and support function into a single integrated sealing unit. The sealing unit includes a sealing member with a sealing portion that contacts the cable outer sheath, and pressing members that apply force to both seal and support the cable simultaneously, eliminating the need for separate sealing and support structures
Solution Approach 2:
The sealing unit is designed to perform multiple functions: sealing (preventing moisture ingress), supporting (providing mechanical strength), and fixing (preventing cable detachment). The pressing members can be adjusted to provide both sealing force and support force, making the structure versatile for different cable types and installation conditions
2Reliability
If rigid sealing structures are used, then the sealing force is improved, but the adaptability to cable diameter changes deteriorates
Solution Approach 1:
The pressing members are designed with adjustable parameters, allowing the sealing unit to adapt to different cable diameters. The pressing members can be positioned at different locations and apply varying forces, enabling the same sealing unit to effectively seal cables of different sizes while maintaining adequate sealing force
Solution Approach 2:
The sealing unit incorporates dynamic elements that allow it to adapt to cable diameter variations. The pressing members can move or be adjusted to accommodate different cable sizes, and the sealing member can deform elastically to maintain contact with the cable outer sheath across a range of diameters
3Reliability
If complex sealing structures are used, then the water-tightness is improved, but the workability during coupling and decoupling deteriorates
Solution Approach 1:
The sealing unit is divided into modular components including the sealing member, pressing members, and fastening unit. This segmentation allows for easy assembly and disassembly - the sealing member can be independently replaced or adjusted without affecting the entire junction box structure, improving maintenance workability while maintaining water-tightness
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 enhanced cable fixing force and water-tightness, preventing detachment and moisture ingress, while allowing flexible adaptation to cable diameter changes and improving workability during coupling and decoupling.
Implementation Method 1
a fastening unit that presses the first and second pressing members toward the sealing member, causing the sealing member to be deformed and closely adhere to the outer circumference of the cable and the inner circumference of the mounting part
Data Source
AI summary
The dome-type mechanical optical cable junction box of the present invention includes a base member including a support frame on which splice trays for connecting optical cables are installed, and a plurality of mounting parts through which cables pass for cable entry and exit, supporting the support frame; a cover member coupled to the base member, enclosing the support frame to maintain airtightness; and a sealing unit coupled to each mounting part of the base member, encasing the cable, maintaining air-tightness with the exterior, and having at least one cable fixing part fixing the cable.