3D Printed Potting Mold for Electrical Wiring Encapsulation

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Solution Overview

Problem

Current potting molds for electrical wiring are cumbersome, prone to leaking, and require removal after curing, which can lead to structural or electrical failures and moisture intrusion due to poor bonding and design inefficiencies.

Innovation Solution

A 3D printed potting mold designed to fit specific dimensions, featuring internal features for component support and a transparent material option for visibility, which can be formed to exact dimensions and contours, reducing material usage and leakage risks, and allowing for easier attachment and removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional potting molds are used, then electrical wiring can be protected, but the molds are cumbersome and require removal after curing

Engineering Contradiction:
Improveease of mold removalVSAvoidbonding reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent applies preliminary action by preparing the component surface with specific surface energy characteristics before applying the potting mold. The surface is treated to ensure optimal bonding conditions are established in advance, which allows the mold to be removed easily after curing without compromising the bonding reliability of the electrical wiring to the component surface.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If traditional potting molds are used, then electrical wiring can be protected, but the molds are prone to leaking and pooling of uncured potting material

Engineering Contradiction:
Improveencapsulation reliabilityVSAvoidleakage and pooling
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent applies parameter changes by optimizing the surface energy parameters of the component surface. By controlling the surface energy within specific ranges, the patent achieves optimal wetting and bonding of the potting material, preventing leakage and pooling while ensuring reliable encapsulation of the electrical wiring.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If traditional potting molds are used, then electrical wiring can be protected, but further processing of the cured potting material is required

Engineering Contradiction:
Improveprocessing efficiencyVSAvoidmanufacturing complexity
Core Design Contradiction:
ProductivityVSEase of manufacture

Solution Approach 1:

The patent applies self-service by designing the potting mold with self-release characteristics achieved through optimized surface energy parameters. The mold automatically releases from the cured potting material without requiring manual removal or additional processing steps, thereby improving productivity while maintaining ease of manufacture.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3471226B1Integrally bonded and installed protective enclosure
Publication Date: 2021.08.11 GOODRICH CORP
  • EP3471226B1 patent drawingFigure 1
  • EP3471226B1 patent drawingFigure 2
  • EP3471226B1 patent drawingFigure 3

AI summary

A protective enclosure for an electrically-conductive element disposed along a component surface includes a base (16, 116), a first side with an electrical connector, and a second side with an aperture for receiving a potting material (32). The base (16, 116), the first side, and the second side at least partially define an internal void, and the internal void communicates with an external environment via the aperture.