Three-Axis Rear-View Mirror Assembly for Compact Aerodynamics
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Solution Overview
Problem
Existing rear-view mirrors for vehicles are bulky, affecting aerodynamics and fuel efficiency, and are fragile due to exposed rotation mechanisms.
Innovation Solution
A compact rear-view mirror design with a rotation mechanism on three axes, where the casing rotates around three geometric axes, housing the electric motors and actuator within the casing for protection and reduced size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the mirror is made large enough to allow a complete view of a field of vision as required by the Traffic Code, then the field of vision is sufficient, but the volumetric overall dimension becomes considerable
Solution Approach 1:
The patent implements a rotation mechanism that allows the mirror to rotate around a first geometric axis (perpendicular to the base support) and an actuator that enables rotation around a second geometric axis (perpendicular to the first axis). This dynamic positioning capability allows a compact mirror to achieve a complete field of vision by orienting it at different angles, eliminating the need for a large static mirror surface.
2Adaptability or versatility
If the considerable overall dimension of the rear-view mirror is maintained, then the complete view of field of vision is achieved, but the aerodynamic shape of the motor vehicle is negatively affected
Solution Approach 1:
The compact mirror assembly with dual-axis rotation capability allows the mirror to be positioned optimally for aerodynamics while maintaining complete field of vision coverage. The rotation around the first axis (vertical axis perpendicular to base support) and second axis (horizontal axis perpendicular to first axis) enables the mirror to achieve necessary viewing angles without requiring a large protruding structure that would disrupt vehicle aerodynamics.
3Ease of operation
If the rotation mechanism of the mirror on two axes is made accessible for adjustment, then the rear view adjustment is flexible, but the mechanism is exposed to impacts and tampering making the mirror fragile
Solution Approach 1:
The actuator is mounted inside the casing, which is rotatably mounted with the support arm. The mirror is securely mounted with the casing. This nested arrangement places the adjustment mechanism (actuator) within the protective enclosure of the casing, shielding it from external impacts and unauthorized tampering while preserving the rotation capabilities around both the first and second geometric axes for flexible mirror positioning.
Data Source
AI summary
Rear-view device for a vehicle comprising a support arm adapted to be securely mounted with said vehicle, a casing rotatably mounted with said support arm, and a mirror securely mounted with said casing. The casing rotates around a first geometric axis, to a second geometric axis and to a third geometric axis switching from a plurality of angular positions with respect to the support arm.