Motor Vehicle Mirror Baffle for Flow Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing exterior mirror devices for vehicles face challenges in reducing wind resistance and noise emissions due to inefficient air flow separation at the base of the mirror, leading to increased noise and wind resistance during vehicle operation.
Innovation Solution
The exterior mirror device incorporates baffle elements at the base of the mirror, designed to extend at a right angle to the peel-away edge, with multiple parallel baffle elements that can be integrated or attached, featuring curved sections to deflect air flow and prevent eddy currents, thereby optimizing air flow guidance and reducing noise emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional mirror housing design is used, then manufacturing is simpler, but air flow separation is inefficient leading to increased noise and wind resistance
Solution Approach 1:
The baffle element is designed to extend at a right angle to the peel-away edge at the base of the mirror, creating an equipotential flow guidance structure that optimizes air flow separation and reduces eddy currents, thereby decreasing noise emission and wind resistance
Solution Approach 2:
The baffle element features a curved surface that guides air flow smoothly along the base of the mirror, preventing turbulent eddy currents and improving aerodynamic performance, which reduces noise and wind resistance
2Object-affected harmful factors
If baffle elements are added to improve air flow, then noise and wind resistance are reduced, but device complexity increases
Solution Approach 1:
The baffle element is integrated with the mirror base structure, merging the air flow guidance function into the existing support structure. This reduces device complexity by eliminating separate components while still achieving improved air flow separation and reduced wind resistance
3Reliability
If multiple baffle elements are provided, then air flow separation is improved, but manufacturing complexity increases
Solution Approach 1:
The baffle element is designed as a segmented structure with multiple parallel elements that can be manufactured separately and then assembled into the mirror base. This segmentation allows for simplified manufacturing of individual components while achieving reliable air flow guidance through the combined structure
Solution Approach 2:
The baffle elements are pre-formed as separate components with optimized geometries before assembly into the mirror base. This preliminary action allows for precise manufacturing of each element and simplifies the final assembly process, maintaining high air flow guidance reliability while easing manufacturing complexity
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
This design significantly reduces noise emission and wind resistance by improving air flow separation at the base of the mirror, enhancing the aerodynamic performance and mechanical stability of the mirror device, even at high air flow velocities.
Implementation Method 1
separation of the flow due to eddies at the base of the mirror is reduced or prevented
Implementation Method 2
the flow behavior of air is further improved during vehicle operation, in particular with the flow noises and wind resistance being reduced
Data Source
AI summary
An exterior mirror device for a motor vehicle comprises a mirror housing in which at least one mirror element and/or one camera sensor is/are arranged, comprising a mirror base which supports the mirror housing at one end and is or can be attached to the motor vehicle at the other end, and comprising at least one baffle element for influencing the air flow along the exterior mirror device. It is provided that the baffle element on the base of the mirror is designed so that it ends at a right angle to the peel-away edge of the air flow on the base of the mirror at the peel-away edge.