Rear View Mirror Mounting Structure for Stable Extension and Pivoting
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Solution Overview
Problem
Power telescoping mirrors face challenges in supporting the weight of rear view devices when fully extended, experiencing vibration due to lack of rigid support, and limited pivoting adjustment which restricts the field of vision.
Innovation Solution
A rear view assembly with a mounting structure comprising a base frame with multiple mounting portions and fold arms on a powerfold mechanism, securely attached to the vehicle at two distinct locations, providing rigid support and enhanced pivoting range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single mounting structure is used to attach the rear view device, then the device complexity is reduced, but the rigidity and vibration resistance deteriorate
Solution Approach 1:
The mounting structure is divided into two separate mounting portions (first mounting portion and second mounting portion) that are spaced apart from each other on the base frame. This segmentation allows the rear view device to be attached at multiple locations, distributing the load and improving overall mounting rigidity while reducing vibration.
2Adaptability or versatility
If the rear view device is fully extended to increase viewing range, then the field of view is improved, but the weight support requirement and vibration increase
Solution Approach 1:
The base frame extends in multiple dimensions with mounting portions positioned at different locations and orientations. This multi-dimensional arrangement allows the rear view device to be supported at various angles and positions, enabling full extension for expanded viewing range while distributing the weight load across multiple attachment points to reduce vibration.
3Adaptability or versatility
If the mirror assembly is pivoted to adjust viewing angle, then the adaptability is improved, but the structural stability deteriorates when fully extended
Solution Approach 1:
The pivoting function is extracted from the mirror head or reflective element and relocated to the base frame level. The two mounting portions are positioned to allow the entire mirror assembly to pivot as a unified structure, providing adjustable viewing angles while maintaining structural stability even when the device is fully extended.
4Ease of operation
If the mirror head is pivoted for adjustment, then the ease of operation is improved, but the field of vision is limited
Solution Approach 1:
Instead of pivoting the mirror head or reflective element to change viewing angle, the invention inverts the approach by pivoting the entire mirror assembly at the base frame level. This allows the mirror to maintain its optimal orientation while the assembly itself rotates to provide different viewing angles, thereby expanding the field of vision without compromising ease of operation.
Data Source
AI summary
A rear view assembly for a vehicle comprises a rear view device having a viewing element and a housing, wherein the rear view device is attached to the vehicle via a mounting structure. The mounting structure comprises a base frame having an upper plate, a lower plate, a middle portion, a first mounting portion and a second mounting portion; a shaft configured on the base frame, and at least one fold arm configured on the shaft via a powerfold mechanism. The first mounting portion of the base frame is mounted on the vehicle at a first mounting location and the second mounting portion of the base frame is mounted on the vehicle at a second mounting location. The first mounting location is spaced apart from the second mounting location.