Trunk Flannel Sheet Layout for Vehicle Body Charge Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for suppressing positive electrostatic charges on vehicle bodies are inadequate for large-scale coverage, which can affect vehicle performance and safety.
Innovation Solution
A vehicle configuration that includes a charge accumulation prevention sheet made of natural fibers with zero electric potential in the triboelectric series, moisture-retaining properties, and air permeability, which is placed between the vehicle body and charge accumulating members to prevent charge accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a negative ion generator is used to eliminate positive electrostatic charges, then charge accumulation is suppressed, but coverage area is limited and cannot effectively suppress charges over large vehicle body areas
Solution Approach 1:
A conductive sheet is introduced as an intermediary component between the vehicle body and charge accumulating members (seats, carpets, trim). This sheet provides a continuous conductive path across large surface areas, enabling effective charge dissipation without requiring direct contact between charging objects and the vehicle body, thereby solving the coverage area limitation of point-source negative ion generators
Solution Approach 2:
The patent replaces the mechanical/electrical system of negative ion generation with an electrostatic field-based conductive sheet system. The conductive sheet creates a distributed electrostatic field that passively neutralizes charges over large areas without requiring active power consumption or complex mechanical components, achieving broader coverage with simpler implementation
2Object-affected harmful factors
If charge accumulating members are placed close to the vehicle body to improve charge elimination, then charge suppression effectiveness increases, but friction between components increases causing additional charge accumulation
Solution Approach 1:
The conductive sheet serves as a mediator that enables charge dissipation without requiring direct frictional contact. By placing the sheet between charge accumulating members and the vehicle body, it provides an alternative charge transfer path that eliminates the need for close physical contact, thereby preventing friction-induced charge generation while maintaining charge elimination effectiveness
Solution Approach 2:
The conductive sheet is implemented as a thin, flexible film that can be conformally attached to various vehicle body surfaces. This thin-film structure maintains close proximity to charge accumulating members for effective electrostatic field interaction while minimizing mechanical friction through its smooth, flexible nature, thus resolving the contradiction between charge suppression effectiveness and friction-induced charging
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 solution effectively suppresses the accumulation of positive electrostatic charges on the vehicle body, maintaining its electric potential at zero and ensuring optimal control and aerodynamic performance.
Implementation Method 1
the flannel cloth 40 suppresses electrostatic induction between the right cover plate 31 and the adjacently-located step portion 15B
Implementation Method 2
absorption of electromagnetic waves by the flannel cloth 40 having moisture-retaining property and air permeability is considered to be the reason
Data Source
AI summary
A vehicle includes a cover member provided in a trunk compartment of a vehicle body, and a flannel cloth arranged between an outer surface of the cover member and a rear floor panel. The flannel cloth is arranged so as to cover an entire region of the rear floor panel that faces the outer surface of the cover member.