Door Mirror Edge Layout to Reduce Height and Vignetting
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Solution Overview
Problem
Existing vehicle mirror designs often result in increased mirror height direction dimensions due to the coverage of the peripheral edge frame portion around the entire mirror, which can lead to space constraints and potential vignetting issues.
Innovation Solution
A vehicle mirror device with a covering section that is disposed at least on the left and right sides of the mirror, but not on the upper and lower sides, combined with a perimeter body that projects or indents towards the front-face side to minimize contact and vignetting, while allowing for adjustment mechanisms to optimize the mirror's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the peripheral edge frame portion is disposed at the entire peripheral direction of the mirror, then the mirror structure is complete and protective, but the mirror height direction dimension increases
Solution Approach 1:
The covering section is segmented to be disposed only at the left and right sides of the mirror, excluding the upper and lower sides. This segmentation allows the mirror height dimension to be reduced while maintaining structural integrity through the combination of the covering section and perimeter body at critical locations.
Solution Approach 2:
The covering section is strategically positioned only where needed (left and right sides) rather than uniformly around the entire mirror. This local quality approach reduces the overall height dimension while providing protection and structural support at the most critical peripheral locations.
2Reliability
If the covering section is disposed at the entire peripheral direction, then the mirror is fully protected, but vignetting occurs and field of view is reduced
Solution Approach 1:
The covering section is divided and positioned only at the left and right sides of the mirror, leaving the upper and lower sides exposed. This segmentation prevents the covering section from obstructing the field of view while still providing necessary protection at the peripheral edges where it is most effective.
Solution Approach 2:
The covering section is asymmetrically positioned to exclude the upper and lower sides of the mirror, creating an optimized configuration that balances protection with field of view requirements. The perimeter body complements this asymmetric arrangement to provide targeted protection without causing vignetting.
Data Source
AI summary
In a door mirror device, a covering section covers a peripheral face of the mirror. The covering section is disposed at least at a portion of a combined range of a vehicle width direction inside and a vehicle width direction outside of the mirror, and the covering section is also not disposed at least at a portion of a combined range of an upper side and a lower side of the mirror. This thereby enables a height direction dimension of the door mirror device to be small.