Front Spoiler Device with Annular Insertion for Rigidity

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Solution Overview

Problem

Conventional front spoiler devices with central partitioning suffer from aesthetic quality deterioration due to visible partition lines and dimensional errors, which compromise both aerodynamics and appearance.

Innovation Solution

A front spoiler device design featuring a diffuser portion with a baffle plate and insertion space forming portion that extends along the bumper fascia's corner, allowing the spoiler body's vertical wall to be inserted, creating an annular connection that hides the partition line and enhances rigidity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the front spoiler device is divided into two parts at the lateral center position to absorb dimensional errors, then the dimensional control is improved, but a partition line appears and appearance quality deteriorates

Engineering Contradiction:
Improvedimensional controlVSAvoidappearance quality
Core Design Contradiction:
Manufacturing precisionVSShape

Solution Approach 1:

The patent introduces a buffer portion as an intermediary element between the left and right spoiler bodies. This buffer portion absorbs dimensional errors and prevents direct contact between the divided spoiler parts, thereby eliminating visible partition lines while maintaining dimensional control flexibility

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The spoiler device is segmented into left and right spoiler bodies that are relatively movable in the vehicle width direction, allowing independent adjustment to absorb dimensional errors without creating visible partition lines through the buffer portion design

Inventive Principle:
Principle #1Segmentation

2Loss of energy

If the front bumper extends laterally to cover the front wheel for better aerodynamics, then the aerodynamic characteristics are improved, but the device complexity increases

Engineering Contradiction:
Improveaerodynamic characteristicsVSAvoiddevice complexity
Core Design Contradiction:
Loss of energyVSDevice complexity

Solution Approach 1:

The spoiler device is divided into modular components (left and right spoiler bodies, buffer portion, mounting portions) that can be independently manufactured and assembled, simplifying the overall device complexity while achieving the extended lateral configuration for improved aerodynamics

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The left and right spoiler bodies are designed to be relatively movable in the vehicle width direction, providing dynamic adjustment capability that simplifies installation and accommodation of dimensional variations while maintaining the aerodynamic benefits of the extended configuration

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP2873592B1Front spoiler device
Publication Date: 2017.05.17 NISSAN MOTOR CO LTD
  • EP2873592B1 patent drawingFigure 1~2
  • EP2873592B1 patent drawingFigure 3~4
  • EP2873592B1 patent drawingFigure 5~6

AI summary

Provided is a front spoiler device that does not deteriorate the outward appearance quality with excellent aerodynamic performance. The front spoiler device includes a bumper fascia 11 forming the outer surface of a front bumper 10, a spoiler body 20 extending along the lower end of the bumper fascia 11 in the vehicle width direction, the spoiler body being provided with a vertical wall portion 21 facing the front of the vehicle, a diffuser portion 30 connected to each lateral end of the spoiler body 20 that extends in the vehicle downward direction and in the vehicle width direction along a corner portion of each lateral end on the lower end of the bumper fascia 11; and an insertion space forming portion 36 provided on the diffuser portion 30 that forms an insertion space into which at least the lateral end of the vertical wall portion 21 is insertable in the vehicle width direction to thereby form an annular shape with the baffle plate portion 31.