Lead Wire Connector Waterproofing and Layout Design

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Solution Overview

Problem

Conventional solenoid valves face issues with water infiltration through exposed connectors, which complicates layout design and storage due to protruding components, and requires additional space for coupling and separation.

Innovation Solution

A lead wire connector with a U-shaped configuration outside an insulation block, coated with epoxy, prevents water ingress and allows flexible placement, reducing the connector's volume for easier transport and storage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the connector protrudes from the solenoid for easy coupling and separation, then the ease of operation is improved, but the device complexity and space requirements increase

Engineering Contradiction:
Improvecoupling and separationVSAvoidlayout design
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The connector is separated from the solenoid body by introducing a flexible lead wire, allowing the connector to be positioned independently. This segmentation enables the connector to protrude for easy coupling while the lead wire manages the spatial arrangement, reducing overall device complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lead wire acts as a flexible connection element that allows the connector to be positioned optimally for operation while accommodating compact device layout. The flexibility of the lead wire enables easy coupling and separation without requiring complex mechanical structures.

Inventive Principle:
Principle #30Flexible shells and thin films

2Ease of operation

If the connector is exposed to the outside for installation, then the ease of operation is improved, but the reliability deteriorates due to water infiltration

Engineering Contradiction:
ImproveinstallationVSAvoidwater infiltration
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The lead wire serves as an intermediary element between the connector and the solenoid body. By routing the lead wire through a waterproof seal or grommet in the solenoid housing, it creates a protected pathway that allows electrical connection while preventing water infiltration, thus maintaining both installation ease and reliability.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If the connector protrudes to the outside, then the ease of operation is improved, but the volume of the device increases making transport and storage difficult

Engineering Contradiction:
Improvecoupling and separationVSAvoidconnector volume
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The lead wire provides dynamic positioning capability, allowing the connector to protrude during operation for easy coupling but be retracted or folded back during transport and storage. This dynamic arrangement reduces the effective volume during non-operational states while maintaining operational accessibility.

Inventive Principle:
Principle #15Dynamics

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 effectively prevents water infiltration, facilitates layout design in confined spaces, and simplifies coupling and separation processes, enhancing operational efficiency and storage convenience.

Implementation Method 1

when epoxy is coated on one end of the insulation block from which the lead wire is drawn, the inflow of water may be surely prevented

Methodology Applied
Scientific EffectWaterproofing: Coatings

Data Source

PatentEP3244490B1Lead wire connector and solenoid valve including same
Publication Date: 2019.12.11 UNICK
  • EP3244490B1 patent drawingFigure 1
  • EP3244490B1 patent drawingFigure 2
  • EP3244490B1 patent drawingFigure 3

AI summary

The present inventive concept relates to a lead wire connector and a solenoid valve including the same, the lead wire connector preventing the inflow of foreign substances containing water, facilitating a layout design for coupling and separation, and being conveniently transported and stored. The lead wire connector comprises: an insulation block protruding to the outside of a solenoid; a power terminal provided inside the insulation block and electrically connected to the solenoid; a lead wire connected to the power terminal and extended to the outside of the insulation block; a wire tube encompassing at least a part of the lead wire; and a connector provided at the end of the lead wire. In addition, the solenoid valve includes the solenoid operated according to whether electric power is applied thereto.