Multi-Level Fender Mounting for Motorcycle Rigidity
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Solution Overview
Problem
The existing fender supporting structures for two-wheeled motor vehicles compromise on rigidity and design flexibility due to the need for enlarged dimensions to secure the front fender's mounting portion, which limits the outer shape and aesthetic appeal.
Innovation Solution
The implementation of a fender supporting structure with at least two mounting surfaces at different heights on both the fender and the supporting member, allowing for increased rigidity and bending strength without enlarging the fender's outer shape, and the use of a cover member to conceal the supporting member, enhancing the vehicle's appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the dimension of the front fender in the width direction is enlarged to secure the supporting rigidity at the mounting portion, then the mounting portion rigidity is improved, but the outer shape of the front fender becomes larger than necessary and design flexibility is reduced
Solution Approach 1:
The invention transitions from a single-level mounting surface to a multi-level mounting structure. By forming mounting surfaces at different heights (first mounting surface at a higher level and second mounting surface at a lower level), the patent utilizes the vertical dimension to enhance mounting portion rigidity without increasing the horizontal width of the fender. This dimensional change allows the fender to achieve sufficient structural strength while maintaining a compact outer shape.
2Strength
If the dimension of the front fender in the width direction is enlarged to secure the rigidity of the entire front fender, then the overall rigidity is improved, but the outer shape becomes larger and aesthetic appeal is reduced
Solution Approach 1:
The patent employs multi-level mounting surfaces arranged in the vertical direction to enhance the overall rigidity of the front fender. The first mounting surface (higher level) and second mounting surface (lower level) create a stepped structure that provides multiple attachment points for the fender supporting member, thereby distributing structural loads more effectively and improving overall rigidity without requiring an increase in the fender's width.
3Reliability
If the mounting surface dimension is increased to provide sufficient attachment area, then the mounting stability is improved, but the fender width must be increased which limits design freedom
Solution Approach 1:
The invention divides the mounting surface into multiple separate levels (first mounting surface and second mounting surface at different heights). This segmentation allows the mounting function to be distributed across multiple surfaces, providing sufficient attachment area and stability without requiring a single large-width mounting surface. The segmented approach enables the fender to maintain a compact width while achieving reliable mounting through multiple distributed attachment points.
Data Source
AI summary
A fender supporting structure of a two-wheeled motor vehicle capable of securing the rigidity of a mounting portion of a front fender and the rigidity of the entire front fender is provided, without enlarging the outer shape of the front fender more than necessary. In a fender supporting structure of a two-wheeled motor vehicle including a fender formed in an arc shape along the shape of a wheel, and a fender supporting member on which the fender is mounted from under the fender supporting member so as to cover an area above the wheel, at least two mounting surfaces at different levels in height are formed on the fender, at least two mounting surfaces at different levels in height are formed on the fender supporting member, and the fender is joined to the fender supporting member with these mounting surfaces.