Flexible Protective Sheet for Waterproof Wire Splices
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Solution Overview
Problem
Existing waterproofing methods for intermediate spliced portions of wires result in clearance formation between the waterproofing agent and the protective sheet, leading to reduced thickness and potential pooling of liquid, which compromises the waterproofing performance.
Innovation Solution
A method involving the application of a flexible protective sheet that deforms to maintain close contact with the waterproofing agent, ensuring it covers the spliced portion effectively, and can be cured with or without light, while being wound around the wires with tension to ensure thorough coverage and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproofing agent is applied to an intermediate spliced portion, then waterproofing is achieved, but the waterproofing agent shrinks or enters between cores or wires causing clearance formation between the resin case and cured adhesive
Solution Approach 1:
The resin case is prepared in advance with a predetermined volume that accounts for the expected shrinkage of the waterproofing agent. The case is designed to accommodate the volume change while maintaining close contact with the cured adhesive, preventing clearance formation.
Solution Approach 2:
The volume of the resin case is specifically designed to match the expanded volume of the waterproofing agent before curing. By controlling the case volume parameter, the invention compensates for the shrinkage that occurs during curing, ensuring no clearance forms between the case and cured adhesive.
2Ease of manufacture
If the waterproofing agent is allowed to shrink naturally, then curing is simplified, but the clearance may become larger and the thickness of the waterproof part becomes smaller
Solution Approach 1:
The resin case is pre-designed with a volume that anticipates the shrinkage of the waterproofing agent during curing. This preliminary design ensures that even as the agent shrinks, the case maintains sufficient thickness and prevents clearance formation, eliminating the need for complex curing control measures.
3Strength
If a rigid insulating resin sheet is used to cover the waterproofing agent, then structural support is provided, but clearances form between the sheet and cured photo-curable silicone resin
Solution Approach 1:
The invention uses a flexible resin case instead of a rigid insulating resin sheet. The flexible material can deform and conform to the shape of the cured waterproofing agent, maintaining close contact and preventing clearance formation while still providing sufficient structural support for the waterproofing structure.
4Reliability
If liquid is pooled in the clearance, then the waterproof part is compromised, but preventing liquid pooling requires eliminating clearances
Solution Approach 1:
The resin case is pre-designed with appropriate volume and geometry to prevent clearance formation in the first place. By anticipating the shrinkage behavior of the waterproofing agent during curing, the case is shaped to maintain uniform contact, eliminating spaces where liquid could pool and compromising waterproofing.
Solution Approach 2:
The volume and dimensional parameters of the resin case are specifically optimized to match the expanded state of the waterproofing agent before curing. This parameter control ensures that after shrinkage and curing, the case maintains close contact with the adhesive without creating liquid-pooling clearances.
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
This approach suppresses clearance formation, maintains uniform coating thickness, and enhances the waterproofing performance by ensuring the waterproofing agent effectively seals the gaps between wires, preventing liquid pooling and improving durability.
Implementation Method 1
The waterproofing agent may be photo-curable; the protective sheet may be capable of transmitting light for curing the waterproofing agent; and the waterproofing agent may be cured by irradiating light for curing the waterproofing agent
Data Source
AI summary
A waterproof intermediate spliced portion of wires includes an intermediate spliced portion of the wires, waterproofing agent supplied to the intermediate spliced portion and cured, and a protective sheet for covering around the waterproofing agent supplied to the intermediate spliced portion. The protective sheet has flexibility capable of being deformed following the deformation of the surface of the waterproofing agent supplied to the intermediate spliced portion and covers the waterproofing agent in a state held in close contact with the surface of the waterproofing agent.