Vehicle body structure
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Solution Overview
Problem
Vehicles experience electromagnetic noise and static electricity interference, which can disrupt aerodynamics and reduce driving stability and fuel efficiency.
Innovation Solution
A vehicular body structure with an infrared reflection layer composed of parallel scaly metal pieces and non-conductive resin, acting as a condenser to store and neutralize charges, is integrated into the vehicle's interior components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional interior component without infrared reflection layer is used, then the vehicle structure is simpler and manufacturing is easier, but the vehicle receives more influence from electromagnetic noise and static electricity
Solution Approach 1:
The infrared reflection layer is designed to serve dual functions: reflecting infrared radiation for thermal insulation and acting as a condenser structure to suppress electromagnetic noise and static electricity. The scaly metal pieces within the layer create capacitor-like structures between adjacent scales, enabling electrostatic charge storage and discharge that neutralizes electromagnetic interference while the layer simultaneously provides infrared reflection.
Solution Approach 2:
The interior component uses a composite structure combining a base member made of thermosetting resin material with an infrared reflection layer containing scaly metal pieces embedded in resin. This composite design integrates the electrical properties of metal scales with the structural properties of thermosetting resin, creating a material that simultaneously provides mechanical strength, infrared reflection, and electromagnetic noise suppression capabilities.
2Object-affected harmful factors
If an infrared reflection layer with scaly metal pieces is added to the interior component, then electromagnetic noise suppression is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The manufacturing process merges the infrared reflection function and electromagnetic noise suppression function into a single integrated layer application step. The scaly metal pieces are embedded in the resin matrix of the infrared reflection layer during one coating or lamination process, eliminating the need for separate electrostatic treatment steps and simplifying overall manufacturing despite the enhanced functionality.
3Object-affected harmful factors
If the infrared reflection layer is made with conductive material to suppress electromagnetic noise, then electrostatic suppression is improved, but the infrared reflection function may be compromised
Solution Approach 1:
The infrared reflection layer exhibits local quality differentiation where scaly metal pieces provide localized conductive properties for electrostatic suppression while the overall layer structure maintains infrared reflection capabilities. The resin matrix between metal scales provides thermal insulation and supports the metal structure, creating local conductive pathways for charge discharge while preserving the layer's overall infrared reflective properties through its composite architecture.
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 structure stabilizes air flow, improves driving stability, and enhances fuel efficiency by reducing electromagnetic noise and static electricity interference.
Implementation Method 1
an infrared reflection layer disposed on a vehicular exterior side of the base member to be opposite the body panel. The infrared reflection layer is for reflecting infrared radiation entering from a body panel side
Implementation Method 2
two scary metal pieces that are arranged parallel to each other are held to be away from each other with the non-conductive resin. Accordingly, a structure similar to that of a condenser is obtained. Namely, charges are temporally stored in the infrared reflection layer
Implementation Method 3
The stored charges are concentrated on an edge portion of each scary metal piece and self-discharge (corona discharge) is caused. Ions created by the self-discharge attract ions of an opposite polarity and neutralization is caused
Implementation Method 4
the body and the air around the body are charged with a same polarity while the vehicle being moving, repulsion (a repulsion force) is caused between the body and the air and disturbance may occur in the air flow near the surface of the body such that the air flows away from the surface of the body
Data Source
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AI summary
A vehicular body structure includes a body panel 12 and an interior component 14. The interior component 14 includes a base member 30, a skin layer 32 that is disposed on a vehicular interior side of the base member 30 and configured as a design surface of a vehicular compartment, and an infrared reflection layer 38 that is configured as a most vehicular exterior side layer of the interior component 14 and for reflecting infrared radiation entering from a body panel 12 side. The base member 30, the skin layer 32, and the infrared reflection layer 38 are disposed on top of each other in layers. The base member 30 is made of thermosetting resin material. The infrared reflection layer 38 includes scary metal flakes 40 that are electrically conductive and non-electrically conductive resin 42 that holds the scary metal flakes 40 to be parallel to each other and to be overlapped in a thickness direction. The interior component 14 is mounted on the body panel 12 with a portion of the infrared reflection layer 38 being in contact with the body panel 12. Accordingly, a vehicular body structure that has an infrared reflecting function and effectively suppresses influence of electromagnetic noise and static electricity is provided.