Removable Cable Storage Element for Junction Box Handling

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Solution Overview

Problem

Existing junction boxes require installers to support both the junction box and a mobile basket simultaneously when handling excess cable, making the operation impractical and posing a risk to the equipment.

Innovation Solution

A junction box design featuring a removable storage element with a cable entry passage and storage space for excess cable, allowing the storage element to be detached from the housing body, facilitating easier handling and maintaining connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a mobile basket is used to store excess cable inside the junction box, then the excess cable can be stored and accessed, but the installer must support both the junction box and the basket simultaneously, making the operation impractical and posing a risk to the equipment

Engineering Contradiction:
Improveease of handling excess cableVSAvoidcomplexity of handling equipment
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The storage element is segmented from the junction box housing, allowing it to be removed and handled independently. This segmentation enables the storage element to be detached, reducing the complexity of handling equipment by eliminating the need to support both the junction box and basket simultaneously.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The storage element is extracted from the junction box as a removable component. This extraction allows the storage element to be taken out when not needed, simplifying the overall system and reducing handling complexity during installation and maintenance operations.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If the storage element is fixed inside the junction box, then the excess cable is securely stored, but it interferes with the closing of the box and hinders installer access during installation and maintenance operations

Engineering Contradiction:
Improvesecurity of cable storageVSAvoidaccessibility to excess cable
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The storage element is designed with dynamic characteristics, being removable rather than fixed. This allows the storage element to be positioned inside the junction box when cable storage is needed, and removed when installer access is required, providing flexibility that resolves the contradiction between security and accessibility.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The storage element is pre-configured with cable management features such as guide channels and retention structures that secure cables before the element is installed in the junction box. This preliminary preparation ensures secure cable storage while allowing easy removal when access is needed.

Inventive Principle:
Principle #10Preliminary action

3Ease of operation

If the storage element is designed to be removable, then installer access to excess cable is improved, but the cable management complexity increases

Engineering Contradiction:
Improveaccessibility to excess cableVSAvoidcomplexity of cable management
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The storage element merges multiple functions into a single component: cable storage, cable guidance, and cable retention. By combining these functions in one removable element, the overall cable management complexity is reduced compared to having separate mechanisms for each function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The storage element is designed as a multi-functional component that serves as both a storage container and a cable management system. It includes integrated features such as entry passages for cable access, internal structures for cable coiling, and retention mechanisms, all in one removable unit that simplifies overall system complexity.

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

Data Source

PatentEP4528346B1Connection box comprising a removable member for storing an excess length of cable
Publication Date: 2026.03.11 AGINODE GRP
  • EP4528346B1 patent drawingFigure 1
  • EP4528346B1 patent drawingFigure 2~3
  • EP4528346B1 patent drawingFigure 4

AI summary

The invention relates to an electrical and/or optical junction box (10) for at least one distribution cable to a plurality of branch cables, said junction box comprising: - a box body (12) defining a receiving cavity (14) for at least one connection element (28), - a storage element (30) for an excess length of distribution cable, characterized in that the storage element (30) is mounted removably on the box body (12) to allow the removal of the storage element (30), the storage element (30) forming at least one cable entry passage (26).