Cable Splice Box Waterproofing via Pillar Grooves and Elastic Sleeve
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Solution Overview
Problem
Conventional cable splice boxes face difficulties in operation, high costs, and inconsistent construction quality, particularly in mid-span branch connections, where the elastic contracting sleeve fails to maintain a waterproof structure due to gaps between cables with different cross-sections, leading to water leakage and compromised signal transmission.
Innovation Solution
A cable splice box design featuring a pillar with longitudinal grooves and slits, combined with an elastic contracting sleeve, forms a first waterproof structure with a cylindrical shape and cross-section, ensuring no gaps or dents, and the radial contracting force maintains tightness, overcoming the limitations of prior art.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the elastic contracting sleeve is used for waterproofing treatment, then construction convenience and cost are improved, but the waterproof structure cannot be maintained due to gaps between cables with different cross-sections
Solution Approach 1:
The patent introduces a filler material as an intermediary substance between cables of different cross-sections. This filler material fills the gaps and voids created by the elastic contracting sleeve, ensuring complete waterproof sealing while maintaining the simplicity and low cost of the elastic sleeve method. The filler acts as a mediator that resolves the geometric incompatibility between cables of varying sizes.
Solution Approach 2:
The patent employs parameter changes by using a filler material with specific properties (viscosity, elasticity, waterproof characteristics) that can adapt to the varying gaps between cables. The filler material's parameters are selected to ensure it can flow into and seal all irregular spaces, then maintain its sealing properties under various environmental conditions, thus achieving reliable waterproofing.
2Quantity of substance
If the heat-shrinkable type is used for waterproofing treatment, then cost is reduced, but construction quality becomes inconsistent and toxic gases are generated
Solution Approach 1:
The patent replaces the thermal field method (heat-shrinkable) with a mechanical field method (elastic contracting sleeve). The elastic sleeve uses mechanical elastic deformation instead of thermal contraction, eliminating the need for torching equipment and toxic gases. This substitution maintains low material cost while significantly improving construction quality consistency and safety.
Solution Approach 2:
The patent uses an elastic contracting sleeve that is simple, inexpensive, and single-use. The sleeve is a disposable component that provides consistent performance without requiring complex equipment or skilled operation, thereby maintaining low cost while ensuring construction quality consistency through its inherent elastic properties.
3Reliability
If the bolt mechanical type is used for waterproofing treatment, then waterproof reliability is improved, but device complexity and construction requirements increase
Solution Approach 1:
The patent uses a flexible elastic contracting sleeve instead of rigid bolt mechanical components. The elastic sleeve is a thin, flexible shell that can conform to the cable geometry and provide waterproof sealing through its elastic contraction. This approach achieves reliable waterproofing with minimal component complexity, eliminating the need for multiple bolts, washers, and complex assembly procedures.
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 simplifies operation, reduces costs, and ensures consistent construction quality, enhancing the waterproofing effect and durability of fiber-optic cable networks by utilizing the radial contracting force of the elastic sleeve to maintain tightness and prevent water ingress.
Implementation Method 1
a second waterproof structure including an elastic contracting sleeve disposed on the outer surface and enveloping the first waterproof structure
Implementation Method 2
the radial contracting force maintains tightness
Data Source
Figure 1(A)~1(C)
Figure 2(A)~2(C)
Figure 3(A)~3(C)
AI summary
A cable connection casing (1) comprises a pillar (5), wherein a waterproof structure is formed between the pillar (5) and a cable. When the cable connection casing is carrying out halfway guiding branch connection, the pillar coordinates with an elastic contracting sleeve (13) to perform waterproof processing, so as to solve the technical problems in the prior art that when the cable connection casing which uses the elastic contracting sleeve to perform waterproof processing is carrying out the halfway guiding branch connection, the operation is difficult to handle, the cost is high, and the construction quality is inconsistent.