Sealed Inline Fuse Module for Remote Mounting and Easy Replacement

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Solution Overview

Problem

Existing fuse modules in vehicular applications often require direct mounting to an electrical source, lack remote placement options, and fail to provide a fluidically sealed and easily removable fuse solution.

Innovation Solution

A sealed inline fuse module with a fuse holder made of electrically insulating material, featuring integrated electrical cables and a fusible element within a mounting block, allowing for remote placement and easy replacement, while maintaining electrical and fluidic sealing through a bolt and nut mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fuse module is mounted directly to an electrical source, then electrical connection is simplified, but placement flexibility is reduced

Engineering Contradiction:
Improveplacement flexibilityVSAvoidmounting structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fuse module is segmented into a separate mounting structure with integrated cables and a separate fuse holder, allowing the module to be placed remotely from the electrical source while maintaining simplified electrical connection through the pre-integrated cable assembly

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mounting structure serves multiple functions: it provides mechanical support, electrical connection through integrated cables, and fluidic sealing, eliminating the need for separate mounting brackets and connection components

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Object-affected harmful factors

If a fuse module is sealed from the environment, then fluidic protection is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvefluidic protectionVSAvoidmanufacturing complexity
Core Design Contradiction:
Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The sealing function is merged with the mounting structure by integrating an O-ring seal directly into the mounting body, eliminating the need for separate sealing components and reducing manufacturing steps while providing comprehensive fluidic protection

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The fuse holder is nested within the sealed mounting structure, with the O-ring seal positioned between the mounting structure and fuse holder to create a fluidically sealed environment without requiring complex external sealing mechanisms

Inventive Principle:
Principle #7Nested doll (Nesting)

3Ease of repair

If a fuse is permanently installed, then electrical connection reliability is improved, but replaceability is reduced

Engineering Contradiction:
Improvefuse replaceabilityVSAvoidelectrical connection reliability
Core Design Contradiction:
Ease of repairVSReliability

Solution Approach 1:

The electrical connection is designed with a dynamic bolted joint that allows the fuse to be easily removed and reinstalled, while the connection maintains reliable electrical contact when assembled through the bolt and nut mechanism with integrated sealing

Inventive Principle:
Principle #15Dynamics

4Ease of manufacture

If integrated cables are used, then installation simplicity is improved, but cable replacement difficulty increases

Engineering Contradiction:
Improveinstallation simplicityVSAvoidcable replacement difficulty
Core Design Contradiction:
Ease of manufactureVSEase of repair

Solution Approach 1:

The cable assembly is segmented into a removable fuse holder component and a fixed mounting structure with integrated cable terminals, allowing the fuse to be replaced independently while the cables remain permanently installed, providing both installation simplicity and repairability

Inventive Principle:
Principle #1Segmentation

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

Enables remote placement and easy replacement of fuses, providing effective overcurrent protection and preventing electrical damage by ensuring a fluidically sealed and electrically insulated connection.

Implementation Method 1

Upon the occurrence of an overcurrent condition, a fusible element within the fuse module melts, disintegrates, or otherwise opens to arrest the flow of current

Methodology Applied
Scientific EffectMelting: Melting

Implementation Method 2

a fuse holder having a main body portion formed of an electrically insulating material

Methodology Applied
Scientific EffectElectrical insulation: Electrical Resistance

Implementation Method 3

the main body portion defining a hollow interior... providing a fluidically sealed environment

Methodology Applied
Scientific EffectPhysical containment sealing: Physical Containment

Data Source

PatentUS12183531B2Sealed inline fuse module
Publication Date: 2024.12.31 SUZHOU LITTELFUSE OVS LTD
  • US12183531B2 patent drawing
  • US12183531B2 patent drawing
  • US12183531B2 patent drawing

AI summary

A fuse holder including a main body portion formed of an electrically insulating material, the main body portion defining a hollow interior and having first and second through holes formed in opposing rear and front walls thereof, respectively, the first and second through holes being aligned with one another, an integrated first electrical cable having a first ring terminal extending into the hollow interior of the main body portion, the first ring terminal disposed on the rear wall and aligned with the first through hole in the rear wall, and an integrated second electrical cable having a second ring terminal extending into the hollow interior of the main body portion, the second ring terminal disposed on the front wall and aligned with the second through hole in the front wall.