Motorcycle Wing Support Structure for Forward Front-Wheel Downforce
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Solution Overview
Problem
Existing wing members for straddled vehicles struggle to generate downforce at a relatively forward position, leading to difficulty in applying the downforce to the front wheel and compromising the rigidity and strength of the wing member.
Innovation Solution
A wing member design with a support structure that includes a first and second attachment portion and an arm, where the wing extends forward of the support, featuring a curved trailing edge to reduce weight and air resistance, ensuring sufficient rigidity and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the wing extends more forward than the support, then the downforce generation position shifts forward, but the rigidity and strength of the wing member deteriorate
Solution Approach 1:
The support is divided into a first attachment portion and a second attachment portion disposed at different longitudinal positions. The wing is segmented into a forward protrusion extending beyond the support front end and a main body portion supported by the support. This segmentation allows the forward protrusion to generate downforce at a forward position while the main body portion maintains structural strength through proper support.
Solution Approach 2:
The support structure is extended in the longitudinal direction by providing both a first attachment portion at a forward position and a second attachment portion at a rearward position. This dimensional extension of the support structure enables the wing to extend forward beyond the support while maintaining adequate support coverage, thus resolving the contradiction between forward downforce generation and structural strength.
2Force
If the wing extends more forward than the support, then the downforce generation position shifts forward, but the rigidity of the wing member deteriorates
Solution Approach 1:
The wing is segmented into a forward protrusion that extends beyond the support front end and a main body portion that is supported by the support structure. This segmentation allows the forward protrusion to generate downforce at a forward position while the main body portion maintains structural rigidity through proper support by the first and second attachment portions.
Solution Approach 2:
The support structure is extended in the longitudinal direction with the first attachment portion positioned forward and the second attachment portion positioned rearward. This dimensional extension provides adequate support coverage for the wing's extended configuration, maintaining rigidity while enabling forward downforce generation.
3Force
If the wing extends more forward than the support, then it is easy to generate downforce at a forward position, but it becomes difficult to firmly support the wing
Solution Approach 1:
The support is segmented into two attachment portions: a first attachment portion that attaches to the vehicle body and joins the wing, and a second attachment portion disposed rearward that also attaches to the vehicle body. This segmentation provides multiple support points, firmly supporting the wing even when it extends forward beyond the support structure.
Solution Approach 2:
An arm is added as a connecting component between the second attachment portion and the wing. This dimensional addition creates a triangular support configuration that enhances support firmness while allowing the wing to extend forward, thus maintaining both downforce generation capability and support firmness.
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 allows for effective generation of downforce at a forward position, enhancing the rigidity and strength of the wing member while minimizing air resistance, thus effectively applying the downforce to the front wheel.
Implementation Method 1
the trailing edge of the wing includes a curved portion that curves convexly forward in a plan view of the straddled vehicle
Implementation Method 2
The wing extends rearward toward the outside in the transverse direction of the straddled vehicle. The wing generates a downforce.
Data Source
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AI summary
There is disclosed a wing member (30) for a straddled vehicle (1) including a support (40) and a wing (50); the wing (50) being supported by the support (40); the support (40) having a front end (40a); the wing (50) including a forward protrusion (60); the forward protrusion (60) being located more forward than the front end (40a); the support (40) including a first attachment portion (41), a second attachment portion (42), and an arm (43); the first attachment portion (41) being attached to the vehicle body (3) and joined to the wing (50); the second attachment portion (42) being disposed more rearward than the first attachment portion (41) and is attached to the vehicle body (3); the arm (43) being joined to the second attachment portion (42) and is joined to the wing (50); the wing (50) having a trailing edge (54) in vehicle plan view; the trailing edge (54) including a curved portion (55) that curves convexly forward in vehicle plan view.