Modular Junction Box Assembly for Replaceable Electronic Elements

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Solution Overview

Problem

The existing junction boxes require replacement of both the housing and bottom plate when electronic elements are changed, leading to increased manufacturing costs and limitations in structure, dimension, and type of elements that can be mounted.

Innovation Solution

The housing and bottom plate are separately arranged, allowing only the bottom plate to be replaced when electronic elements are changed, with features like grooves and extensions for secure mounting and electrical connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the housing and bottom plate form an integrated structure, then the structural strength is improved, but the manufacturing cost increases when electronic elements need replacement

Engineering Contradiction:
Improvestructural strengthVSAvoidmanufacturing cost
Core Design Contradiction:
StrengthVSEase of manufacture

Solution Approach 1:

The housing is divided into two separate components: the main housing body and the bottom plate. These two parts are connected through positioning structures (positioning grooves and positioning protrusions) and fastening mechanisms. This segmentation allows the bottom plate to be replaced independently when electronic elements need replacement, while the main housing body can be reused, thereby reducing manufacturing costs while maintaining structural integrity through the designed connection mechanisms.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If the housing and bottom plate are integrated, then the structural stability is improved, but the replacement complexity increases

Engineering Contradiction:
Improvestructural stabilityVSAvoidreplacement complexity
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The housing is segmented into a reusable main body and a replaceable bottom plate. The positioning grooves and protrusions ensure stable assembly, while the separate fastening mechanisms enable straightforward disassembly and replacement of the bottom plate without affecting the main housing structure, thus reducing replacement complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The bottom plate is extracted as a separate, independently replaceable component from the housing system. This extraction allows the bottom plate to be removed and replaced without disturbing the main housing body or other components, significantly simplifying the replacement process while maintaining structural stability through the positioning and fastening mechanisms.

Inventive Principle:
Principle #2Taking out (Extraction)

3Adaptability or versatility

If different mounting structures are designed for different electronic elements, then the adaptability is improved, but the device complexity increases

Engineering Contradiction:
ImproveadaptabilityVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The bottom plate is designed as a universal mounting platform that can accommodate different types and dimensions of electronic elements. The positioning grooves and fastening mechanisms provide standardized mounting interfaces that work with various electronic components, eliminating the need for different housing designs for different elements and thus reducing overall device complexity while maintaining high adaptability.

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

Data Source

PatentEP4366162B1Junction box and method for mounting a junction box
Publication Date: 2025.11.26 JIANGXI JINKO PV MATERIAL CO LTD
  • EP4366162B1 patent drawingFigure 1~2
  • EP4366162B1 patent drawingFigure 3~4
  • EP4366162B1 patent drawingFigure 5~6

AI summary

A junction box and a method for mounting a junction box. The junction box includes a housing and an assembly module. The housing is hollow inside to form an accommodation space. The accommodation space passes through two sides of the housing along a thickness direction of the junction box. The assembly module includes a bottom plate and an electronic element. Along the thickness direction of the junction box, the bottom plate is mounted on one side of the housing, the bottom plate and the housing define an accommodation cavity, the electronic element is mounted on the bottom plate, and at least part of the electronic element is located in the accommodation cavity. The housing and the bottom plate are separately arranged and connected to each other.