Storage Box Reinforcing Walls Prevent Wall Deformation

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Solution Overview

Problem

Traditional electrical junction boxes face difficulties in assembling electronic control units due to the deformation of side walls caused by the pressure from bundled electric wires and connectors, leading to inefficient operations.

Innovation Solution

The design incorporates reinforcing walls that contact the inner surfaces of the storing room body, providing a repelling force against external forces, thus preventing deformation and facilitating smooth assembly of the electronic control unit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If electric wires are bundled and pushed into the accommodating space outside the unit storing room, then the electric wires can be connected to the electronic control unit, but the side walls of the unit storing room are pressed and bent inwards, making it difficult to store the electronic control unit

Engineering Contradiction:
Improveease of wire connectionVSAvoidease of storing electronic control unit
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The box body is divided into functionally independent spaces: a unit storing room for the electronic control unit and an accommodating space for electric wires and connectors. The partition wall with inclined surfaces creates a clear separation, allowing wires to be arranged in the accommodating space without pressing against the unit storing room side walls, thus resolving the contradiction between wire connection ease and electronic control unit storage ease.

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If the side walls of the unit storing room are thin to reduce overall box size, then the box becomes more compact, but the side walls deform easily when external force is applied from electric wires or connectors

Engineering Contradiction:
Improveoverall box sizeVSAvoidside wall resistance to deformation
Core Design Contradiction:
Volume of moving objectVSStrength

Solution Approach 1:

The partition wall is designed with inclined surfaces that protrude into the unit storing room before the electronic control unit is installed. This preliminary structural arrangement prevents external forces from electric wires and connectors from acting directly on the unit storing room side walls, thereby preventing deformation even when the side walls are made thin for compactness.

Inventive Principle:
Principle #10Preliminary action

3Device complexity

If the electronic control unit is accommodated in a unit storing room with side walls that can bend, then the box structure remains flexible and easy to assemble, but the electronic control unit cannot be smoothly stored due to wall deformation

Engineering Contradiction:
Improveassembly flexibilityVSAvoidassembling efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

By segmenting the box body into distinct spaces with a partition wall featuring inclined surfaces, the design maintains structural flexibility for easy assembly while preventing wall deformation in the unit storing room. This segmentation allows the partition wall to absorb assembly flexibility needs without compromising the stability required for smooth electronic control unit installation, thereby improving productivity.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP2690733B1Storage box and electrical connection box
Publication Date: 2015.12.30 YAZAKI CORP
  • EP2690733B1 patent drawingFigure 1
  • EP2690733B1 patent drawingFigure 2
  • EP2690733B1 patent drawingFigure 3

AI summary

A storing box of the present invention includes a first lower member (12) which includes a first lower member body (C) which is assembled to a storing room body (B) to cover a bottom port (20b), and a reinforcing wall (30a to 33a) which enters into the storing room body (B) and contacts with the inner surfaces of the storing room body (B) when the first lower member body (C) is assembled to the storing room body (B).