Automotive Mirror Mounting Box Section for Vibration Control
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Solution Overview
Problem
Existing mirror mounting systems on automotive vehicles, particularly on the driver's door, face challenges with excessive vibration, which diminishes the mirror's effectiveness, especially when mounted on the outer door panel, as they fail to adequately control vibrations from the vehicle's power train and body.
Innovation Solution
A robust mirror mounting system is created using an outer panel with a mounting reinforcement and an outer belt reinforcement, separated by standoff structures, forming a box section that supports the mirror, thereby enhancing vibration control and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mirror is mounted on the outer door panel, then the mounting position is more accessible and aesthetically preferable, but excessive vibration from the vehicle's power train and body greatly diminishes the mirror's usefulness
Solution Approach 1:
The mounting system is divided into separate functional components: an outer panel with apertures, a mounting reinforcement with indexed apertures, an outer belt reinforcement with indexed apertures, and standoff structures. This segmentation allows each component to perform its specific function - the outer panel provides mounting position, the reinforcements provide structural support, and the standoffs provide vibration isolation, collectively solving the contradiction between accessibility and vibration control.
Solution Approach 2:
The standoff structures act as intermediary elements between the mounting reinforcement and the outer belt reinforcement. These standoffs create a box section configuration that provides vibration isolation while maintaining structural integrity, thereby mediating between the need for accessible mounting and the need to reduce vibration from the vehicle's power train and body.
2Object-affected harmful factors
If a doubler is attached to the inside of the door's outer panel to reduce vibration, then some vibration control is achieved, but it cannot cope with vibrations commonly experienced with larger mirrors
Solution Approach 1:
The mounting system uses a composite structure combining the outer panel, mounting reinforcement, outer belt reinforcement, and standoff structures to form a box section. This composite construction provides superior vibration resistance compared to a simple doubler, enabling the system to handle the vibrations commonly experienced with larger mirrors while maintaining strength.
Solution Approach 2:
The solution transitions from a two-dimensional doubler attached to the panel to a three-dimensional box section structure formed by the mounting reinforcement, outer belt reinforcement, and standoff structures. This dimensional change creates a rigid framework that provides enhanced vibration resistance and structural strength capable of handling larger mirror heads.
3Stability of the object's composition
If the mirror is placed in the sail portion where the door sash is joined to the upper portion, then rigid mounting is achieved, but the mirror placement becomes awkward with certain vehicles
Solution Approach 1:
The invention extracts the vibration control function from the mounting location itself and incorporates it into the mounting system components. By removing the dependency on the sail portion's structural characteristics and embedding vibration isolation features (standoff structures forming a box section) directly in the mounting assembly, the system achieves rigid mounting with vibration control at any location on the outer door panel, providing placement flexibility while maintaining stability.
Data Source
AI summary
An external mirror mounting system for an automotive vehicle includes an outer panel having a mounting reinforcement attached to an inner surface, and an extended outer belt reinforcement which is mounted with stand off structures to the mounting reinforcement, so that a box section is constituted for supporting a mirror attached to the outer surface of the outer panel.