Partial Housing Coating for Sealed Electrical Connectors
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Solution Overview
Problem
Existing electrical connectors face challenges in achieving waterproof and dustproof performance while maintaining structural strength and stability, particularly in miniaturized designs with varying environmental requirements.
Innovation Solution
The electrical connector features a first housing with a divided exterior wall, where a coating layer is applied only to a second area, allowing a sealing ring to be disposed in a first area without the coating, enhancing the binding force and structural strength, and includes pins with coating layers for soldering on a circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a coating layer is applied to the entire exterior wall of the first housing, then the corrosion resistance and surface quality are improved, but the binding force between the sealing ring and the housing deteriorates
Solution Approach 1:
The patent applies the local quality principle by dividing the exterior wall into two distinct areas: a first area with a coating layer for corrosion protection and a second area without coating for optimal sealing ring binding. This localized differentiation allows each region to have the specific surface properties needed for its function, resolving the contradiction between overall corrosion resistance and localized sealing performance.
2Volume of moving object
If the electrical connector is miniaturized, then the compactness and integration are improved, but the structural strength and stability deteriorate
Solution Approach 1:
The patent employs composite materials by combining the coated first area and the uncoated second area within the same housing structure. This composite approach allows the housing to exhibit different surface properties in different regions, enabling miniaturization while maintaining structural integrity through optimized material distribution and localized surface characteristics.
Data Source
AI summary
An electrical connector including an insulating body, multiple terminals, a first housing, and a sealing ring is provided. The terminals are disposed in the insulating body. The first housing is assembled to the insulating body and surrounds the insulating body and the terminals. An exterior wall of the first housing is divided into a first area and a second area which are different from each other. A coating layer is disposed onto a surface of the second area. A surface of the first area is a raw material surface of the first housing. The sealing ring is disposed in the first area.