Rearview Mirror Assembly With Rigid Impact-Load Support
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Solution Overview
Problem
Conventional rearview mirrors suffer from glass shattering due to poor toughness, causing deformation and breakage during impact, especially in CCC head impact tests.
Innovation Solution
An impact-resistant rearview mirror design that bonds the reflective mirror to the display module's screen with an adhesive layer and supports the reflective mirror through a rigid loop formed by the heat dissipation plate, support plate, and mounting bracket, distributing impact forces to prevent glass deformation and breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the reflective mirror is mounted with a gap between the display screen and the mirror surface, then the mirror can be independently positioned, but the glass becomes vulnerable to impact and shatters easily
Solution Approach 1:
The patent merges the reflective mirror assembly with the display module assembly by bonding them together with adhesive. This creates a unified structure where the display module and reflective mirror form a combined unit that is mounted to the housing, eliminating the vulnerability of the independently suspended mirror while maintaining proper positioning.
2Device complexity
If the reflective mirror is suspended within the housing window area, then the housing structure remains simple, but the glass deforms and breaks under impact force
Solution Approach 1:
The patent combines the reflective mirror assembly and display module assembly into a single integrated unit that is mounted to the housing as one component. This merging approach maintains housing structure simplicity while the combined unit provides mutual support, with the display module and mirror reinforcing each other against impact forces.
3Illumination intensity
If the glass material is used for the reflective mirror surface, then the mirror provides good reflectivity, but the material has poor toughness and exceeds yield strength during deformation
Solution Approach 1:
The patent creates a composite structure by bonding the glass reflective mirror to the display module assembly. This composite construction combines the high reflectivity of glass with the structural support and toughness of the display module housing, allowing the glass to maintain its optical properties while the composite structure prevents it from exceeding yield strength during impact.
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
The design enhances the mirror's impact resistance by transmitting external forces through a rigid loop structure, preventing the reflective glass from deforming and breaking upon impact.
Implementation Method 1
an inner side surface of the reflective mirror and an outer surface of the display screen are pasted together via an adhesive layer
Implementation Method 2
an external force may be transmitted from the display module to the base through force conduction when the force impacts the reflective mirror
Data Source
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Figure 5
AI summary
An impact-resistant rearview mirror includes a housing (10), a display module (30), a reflective mirror (20), and a mounting bracket (40), where the housing (10) includes a front housing (11) and a rear housing (12) that are mutually matched, a rear side of the display module (30) is a heat dissipation plate (33), a front side is a display screen (31), the mounting bracket (40) includes a base (42) and a support plate (41) that is supportingly connected to the base (42), the display module (30) and the support plate (41) are installed in the housing (10), the heat dissipation plate (33) is fixedly connected to the support plate (41) and causes the support plate (41) to support the heat dissipation plate (33), the reflective mirror (20) is installed on the front housing (11) and located on a front side of the display screen (31), and an inner side surface of the reflective mirror (20) and an outer surface of the display screen (31) are pasted together via an adhesive layer (21). When an external force impacts the reflective mirror (20), the force may be transmitted from the display module (31) to the base (42), preventing the reflective mirror (20) from deforming and breaking due to impact.