Vehicle Composite Member With Ferrous Perimeter Collision Reinforcement

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Solution Overview

Problem

Existing vehicle composite members are vulnerable to damage from collision loads due to the lack of ferrous members at the front section, and the joining of aluminum and ferrous metals requires specialized equipment, increasing production costs and reducing efficiency.

Innovation Solution

A vehicle composite member with a lightweight panel and a ferrous perimeter member integrated together, allowing for a ferrous metal-on-ferrous metal join, which eliminates the need for specialized joining equipment and provides protection against collision loads.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If a lightweight panel is used to reduce vehicle weight, then the vehicle weight is reduced, but the panel becomes vulnerable to damage from collision loads

Engineering Contradiction:
Improvevehicle weightVSAvoidcollision resistance
Core Design Contradiction:
Weight of moving objectVSStrength

Solution Approach 1:

The invention creates a composite member by integrating a lightweight panel with a ferrous perimeter member, combining the weight advantages of lightweight materials with the strength advantages of ferrous materials. The ferrous perimeter member specifically reinforces the front section to resist collision loads while the lightweight panel maintains overall vehicle weight reduction.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The vehicle body is divided into different material zones: a lightweight panel for the main body area and a ferrous perimeter member for the front section requiring collision resistance. This segmentation allows each part to be optimized for its specific function.

Inventive Principle:
Principle #1Segmentation

2Weight of moving object

If aluminum and ferrous metal are joined together to create a composite member, then weight reduction is achieved, but specialized joining equipment is required increasing production costs

Engineering Contradiction:
Improvevehicle weightVSAvoidproduction cost
Core Design Contradiction:
Weight of moving objectVSEase of manufacture

Solution Approach 1:

The composite member is segmented into a lightweight panel and a ferrous perimeter member that can be manufactured separately using different processes, then joined together. This allows each component to be optimized for its material properties while enabling flexible manufacturing and joining strategies.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different parts of the vehicle body are made from different materials appropriate to their functional requirements: lightweight materials in non-critical areas and ferrous materials in collision-prone areas, with joining methods selected locally based on the specific requirements of each interface.

Inventive Principle:
Principle #3Local quality

3Weight of moving object

If aluminum and ferrous metal are joined together to create a composite member, then weight reduction is achieved, but production efficiency is reduced due to specialized joining equipment requirements

Engineering Contradiction:
Improvevehicle weightVSAvoidproduction efficiency
Core Design Contradiction:
Weight of moving objectVSProductivity

Solution Approach 1:

The composite member is divided into separately manufacturable components (lightweight panel and ferrous perimeter member) that can be produced through different manufacturing processes and then assembled, allowing for parallel production and reducing bottlenecks associated with specialized joining equipment.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lightweight panel and ferrous perimeter member are prepared and pre-assembled into a composite member before final vehicle assembly, allowing the joining operation to be performed in advance when conditions are optimized and reducing the complexity of final vehicle production.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS10940898B2Vehicle composite member, vehicle, vehicle manufacturing method, and mixed flow production method
Publication Date: 2021.03.09 TOYOTA JIDOSHA KK
  • US10940898B2 patent drawing
  • US10940898B2 patent drawing
  • US10940898B2 patent drawing

AI summary

A vehicle composite member to be joined at a perimeter section to a ferrous vehicle body member is provided. The vehicle composite member includes a lightweight panel that is formed of a lightweight material having a lighter specific weight than iron, and a ferrous perimeter member that has been integrated with the lightweight panel. The perimeter section is configured by the ferrous perimeter member.