Fusion Splicer Housing Case With Closed-Lid Cable Passage

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Solution Overview

Problem

Existing housing cases for fusion splicers require a large arrangement space when power is supplied due to the need to keep the lid open to prevent the power supply cable from being pinched, leading to potential damage.

Innovation Solution

The housing case design includes an insertion portion for the cable that allows it to be inserted through the case when the lid is closed, along with sealing members to prevent pinching and protect against water and dust, enabling power supply with the lid shut.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the lid body is kept open to prevent cable pinching, then cable damage is prevented, but the arrangement space required increases

Engineering Contradiction:

Improvecable damage preventionVSAvoidarrangement space

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The side wall is segmented into multiple portions: a first side wall portion, a second side wall portion, and a third side wall portion. The insertion portion is formed by making the first and second side wall portions detachable from the third side wall portion, creating a segmented structure that allows cable passage while maintaining overall case integrity when closed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The insertion portion acts as an intermediary structure between the interior and exterior of the housing case. It provides a dedicated pathway for cables to pass through the closed lid body without being pinched, mediating the conflict between sealed enclosure and cable connectivity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Area of stationary object

If the lid body is closed to reduce arrangement space, then space efficiency improves, but cable pinching and damage risk increase

Engineering Contradiction:

Improvearrangement spaceVSAvoidcable pinching

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The side wall is divided into detachable portions that form the insertion portion, creating a controlled opening pathway that prevents cable pinching while allowing the lid to remain closed for space efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The insertion portion serves as an intermediary structure that eliminates cable pinching by providing a dedicated passage through the closed lid body, mediating between the sealed enclosure and cable connectivity requirements.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the lid body is closed to maintain sealed environment, then protection against water and dust improves, but cable insertion becomes difficult

Engineering Contradiction:

Improveprotection against water and dustVSAvoidcable insertion

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The side wall is segmented into detachable portions that form the insertion portion, creating a controlled access point that allows cable insertion while maintaining the sealed environment when closed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The insertion portion acts as an intermediary structure that facilitates cable insertion through the closed lid body without compromising the sealed environment, mediating between accessibility and protection requirements.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12384598B2Housing case for fusion splicer and fusion splicer set

Publication Date: 2025.08.12 SUMITOMO ELECTRIC OPTIFRONTIER CO LTD

AI summary

A housing case for a fusion splicer is a housing case for housing the fusion splicer for an optical fiber. The housing case for a fusion splicer includes a case main body including a first side wall, and a lid body attached to the case main body to be openable and closable. The lid body includes a second side wall configured to match the first side wall when closed. At least one of the first side wall and the second side wall includes an insertion portion configured for a cable extending from the inside of the housing case to the outside thereof to be inserted through the insertion portion in a state where the lid body is closed with respect to the case main body.