Wire Waterproof Structure for Enhanced Reliability
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Summary
Problems
Existing wire waterproof structures face challenges in ensuring uniform filling of water-stopping materials with fillers in assemblies of multiple strands, leading to insufficient waterproofness and potential cracking under thermal stress.
Innovation solutions
A wire waterproof structure that uses a water-stopping material with a filler dispersed in a resin, where the filler has an average particle size of 1 μm or more and 15% or less of the strand diameter, and a content of 1 mass % or more to 20 mass % relative to the resin, allowing for efficient distribution and curing within minute voids between strands, using either soft or hard fillers to enhance toughness or mechanical strength.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If filler is added to water-stopping material to improve toughness and mechanical strength, then the material properties are improved, but uniform distribution in minute voids between strands becomes difficult to achieve
Why choose this principle:
The patent specifies precise parameter ranges for filler particle size (1 μm or more and 15% or less of strand outer diameter) and filler content (1 mass% or more and 20 mass% or less relative to resin material). These parameter optimizations enable the filler to distribute uniformly in minute voids while maintaining improved mechanical strength and toughness.
Principle concept:
If filler content is increased to enhance waterproofness and material properties, then the effectiveness of water-stopping material is improved, but the material becomes harder to fill uniformly in minute spaces between strands
Why choose this principle:
The patent optimizes filler content to 1 mass% or more and 20 mass% or less relative to resin material. This parameter range ensures sufficient waterproofness enhancement while maintaining adequate flowability for uniform filling of minute voids between strands during the waterproofing process.
Application Domain
Data Source
AI summary:
A wire waterproof structure that uses a water-stopping material with a filler dispersed in a resin, where the filler has an average particle size of 1 μm or more and 15% or less of the strand diameter, and a content of 1 mass % or more to 20 mass % relative to the resin, allowing for efficient distribution and curing within minute voids between strands, using either soft or hard fillers to enhance toughness or mechanical strength.
Abstract
A wire waterproof structure including a water-stopping material, wherein: the water-stopping material is configured to seal at least a partial region of a conductor comprising an assembly of a plurality of strands, the water-stopping material contains a resin material, and a filler dispersed in the resin material, and the filler has an average particle size of 1 μm or more and 15% or less of an outer diameter of the strands, and a content in the water-stopping material of 1 mass % or more and 20 mass % or less, relative to the resin material.