Vehicle Door Mirror Base Member Mounting Rigidity
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Solution Overview
Problem
Conventional door mirror mounting structures in vehicles lack sufficient mounting rigidity, particularly due to the external placement of door mirrors which apply load away from the vehicle body, requiring enhanced structural support to maintain visibility and safety during side collisions.
Innovation Solution
A door structure with a base member mounted to the inner panel, featuring a patch member joined by an elastic member, reinforcing members extending along the vehicle width, and multiple joining points strategically positioned to enhance rigidity and dispersal of loads, forming an integral unit with the outer panel to increase mounting stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the door mirror is installed away from the vehicle body to exert its function, then the visibility for the driver is improved, but the mounting rigidity deteriorates due to the increased load distance
Solution Approach 1:
The base member extends in the vehicle width direction (lateral dimension) rather than only in the front-rear direction, creating a three-dimensional load distribution structure. This lateral extension allows the load to be dispersed across multiple joining points spaced apart in the width direction, thereby maintaining mounting rigidity while preserving the functional positioning of the door mirror away from the vehicle body.
Solution Approach 2:
The base member is divided into multiple segments or portions that extend laterally, with each segment joined to the door at different positions. This segmentation allows the load to be distributed across multiple discrete joining points rather than concentrated at a single location, improving overall mounting rigidity while maintaining the extended positioning of the door mirror.
2Stability of the object's composition
If multiple joining points are provided to enhance mounting rigidity, then the structural stability is improved, but the device complexity increases
Solution Approach 1:
The base member serves multiple functions simultaneously: it provides structural support for the door mirror, distributes loads across multiple joining points, and extends laterally to achieve both rigidity and functional positioning. This multi-functionality reduces the need for separate components, thereby maintaining mounting rigidity without proportionally increasing device complexity.
Solution Approach 2:
The base member integrates the load distribution function and the positioning function into a single structural element. By combining these functions, the structure achieves enhanced mounting rigidity through multiple joining points while avoiding the complexity of separate reinforcement components, thus resolving the contradiction between stability and complexity.
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 solution provides high mounting rigidity for exterior members like door mirrors, ensuring enhanced safety and reduced manufacturing time by distributing loads effectively across the vehicle width and front-rear directions, while maintaining visibility and safety during collisions.
Implementation Method 1
the patch member and the inner panel may be joined by an elastic member (for example, an elastic member 40 of an embodiment)
Data Source
AI summary
A front side door 2 has an inner panel 12 and an outer panel disposed on an outer side than the inner panel 12 in a vehicle width direction. A door mirror is disposed on the vehicle exterior side of the outer panel, and a base member 30 is disposed on the vehicle interior side of the door mirror with the outer panel interposed therebetween, the door mirror being mounted to the base member. The base member 30 is joined to the inner panel 12.