Saddle-ride Foot Rest Rigidity Weight Reduction
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Solution Overview
Problem
Foot rests for saddle-ride type vehicles face a challenge in achieving a balance between rigidity and weight reduction, as existing designs with thicker plates for rigidity result in increased weight.
Innovation Solution
The design incorporates saw-shaped pegs on foot-placing portions and reinforcement members arranged in an X-shape, with varying plate thicknesses and reinforcement rib structures, allowing for increased rigidity while reducing weight and improving mud discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the plate thickness of foot-placing portions is increased to secure rigidity, then the rigidity of the foot-placing portion is improved, but the weight of the foot rest increases
Solution Approach 1:
The patent applies local quality by making the third foot-placing portion (which serves as kick pedal stopper) thicker than the first and second foot-placing portions. This localized thickening provides enhanced rigidity specifically where needed to stop the kick pedal, while keeping other areas thinner to reduce overall weight. The reinforcement members are also strategically positioned to provide local structural support.
Solution Approach 2:
The foot rest is divided into multiple foot-placing portions (first, second, and third) with different thicknesses and functions. The third foot-placing portion is segmented to serve dual purposes as both a foot-placing surface and a kick pedal stopper. Reinforcement members are used to segment and distribute structural support across different areas of the foot rest.
2Strength
If reinforcement members are added to connect foot-placing portions, then the rigidity of the foot rest is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into the third foot-placing portion by making it thicker and positioning it to serve as both a foot-placing surface and a kick pedal stopper. This consolidation reduces the need for separate components and simplifies the overall structure while maintaining required rigidity and functionality.
Data Source
AI summary
Foot rests are provided for a saddle-ride type vehicle each including a step portion for placing a foot and an attachment portion which extends from the step portion toward a vehicle body frame and is turnably attached to a corresponding one of step brackets on the vehicle-body-frame side. The step portion includes: a first foot-placing portion, a second foot-placing portion, and a third foot-placing portion which extend in a vehicle width direction; a first reinforcement member and a second reinforcement member which connect the first foot-placing portion and the second foot placing portion; and a third reinforcement member and a fourth reinforcement member which connect the first foot-placing portion and the third foot-placing portion.