Console Box Lid Load Absorption via Rupture Mechanism

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Solution Overview

Problem

Next-generation vehicles with larger batteries installed in the rear center console reduce the storage capacity and depth of console boxes, making it difficult for the lid to absorb emergency loads effectively due to insufficient gap depth.

Innovation Solution

A console box design featuring inwardly-bent and outwardly-bent parts with a space-inserted part and a rupture expected part that absorbs emergency loads by deforming and rupturing to distribute the load efficiently, even with a shallow storage container.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If a battery is installed in the rear center console to improve energy efficiency and reduce emissions in next-generation vehicles, then energy efficiency is improved, but the storage capacity and depth of the console box are reduced

Engineering Contradiction:
Improveenergy efficiencyVSAvoidstorage capacity
Core Design Contradiction:
Use of energy by moving objectVSVolume of stationary object

Solution Approach 1:

The patent divides the console box structure into multiple functional zones: a storage container for general items, a deformation absorbing structure with inwardly-bent and outwardly-bent parts for load management, and a rupture expected part as a safety mechanism. This segmentation allows the battery to occupy the rear portion while maintaining usable storage space in the front portion.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent utilizes the vertical dimension by creating a deformation absorbing structure that extends downward from the storage container. The inwardly-bent part folds downward and inward to form a space part, effectively using vertical space to create load absorption capacity without reducing the horizontal storage volume.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Volume of stationary object

If the storage container is made shallow to accommodate the battery, then battery installation is enabled, but the ability to absorb emergency loads is reduced

Engineering Contradiction:
Improvestorage depthVSAvoidload absorption capability
Core Design Contradiction:
Volume of stationary objectVSStrength

Solution Approach 1:

The patent pre-configures a deformation absorbing structure consisting of an inwardly-bent part and an outwardly-bent part that are designed to deform in advance of any emergency load event. The inwardly-bent part is pre-formed with bendable sections, and the outwardly-bent part is positioned to engage with it, creating a ready-to-absorb load path before any impact occurs.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent converts the potential harm of a shallow storage container (reduced load absorption) into a benefit by designing a controlled deformation mechanism. The rupture expected part is intentionally designed to break under emergency loads, allowing the structure to deform in a controlled manner that absorbs impact energy, thereby protecting occupants while accommodating the battery.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

3Volume of stationary object

If the gap to the bottom of the storage container is reduced to maximize storage space, then storage capacity is improved, but the ability to absorb emergency loads is insufficient

Engineering Contradiction:
Improvestorage volumeVSAvoidemergency load protection
Core Design Contradiction:
Volume of stationary objectVSReliability

Solution Approach 1:

The patent introduces a deformation absorbing structure as an intermediary element between the storage container and the battery. This structure includes an inwardly-bent part that forms a space part and an outwardly-bent part with a rupture expected part, acting as a mediator that absorbs emergency loads through controlled deformation and rupture, thereby protecting both the storage container and battery while maintaining minimal gap depth.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

The design allows for effective absorption of emergency loads and expansion of storage capacity by optimizing the deformation and rupture of specific parts to manage load distribution and depth limitations.

Implementation Method 1

a rupture expected part that is provided at the outwardly-bent part, the rupture expected part being configured to be broken when an emergency load is applied to the lid part from above

Methodology Applied
Scientific EffectFracture mechanics: Fracture Mechanics

Implementation Method 2

an inwardly-bent part that is formed on the upper edge part of each side-wall of the console body, the inwardly-bent part being formed by downwardly and inwardly bent in the console body

Methodology Applied
Scientific EffectPlastic deformation: Plasticity

Data Source

PatentUS9925927B2Console box
Publication Date: 2018.03.27 CALSONIC KANSEI CORP
  • US9925927B2 patent drawing
  • US9925927B2 patent drawing
  • US9925927B2 patent drawing

AI summary

A console box includes a console body including a pair of right and left side-walls, a storage container accommodated in the console body, a lid part openably placed in contact with upper edge parts of the console body, and an inwardly-bent part formed on the upper edge part of each side-wall of the console body, the inwardly-bent part being overlapped with the corresponding side-wall in an inside-and-outside direction so as to form a space part between the inwardly-bent part and the corresponding side-wall. The console box further includes an outwardly-bent part and a space-inserted part that are formed near an upper edge part of the storage container, and a rupture expected part provided at the outwardly-bent part, the rupture expected part being configured to be broken when an emergency load is applied to the lid part from above.