Personal Watercraft Front Bumper Structure for Splash Deflection
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Solution Overview
Problem
Personal watercrafts experience water hitting the occupant during low-speed planing due to the configuration of the front bumper covering the gunnel line, leading to potential splashing and infiltration.
Innovation Solution
A front bumper unit is designed with a sloping surface and guide surfaces to guide water outward, a deck cover to prevent infiltration, and a reinforcement member to support the bumper unit, ensuring wave returning performance and reducing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the front bumper is attached to cover the gunnel line, then the structural integrity and protection of the watercraft body is improved, but water splashing and infiltration into the footwell occurs during low-speed planing
Solution Approach 1:
The front bumper unit is divided into multiple components: a front bumper main body, a deck cover, and a reinforcement member. This segmentation allows each component to serve specific functions - the front bumper provides structural protection, the deck cover prevents water infiltration, and the reinforcement member enhances overall strength, thereby resolving the contradiction between structural integrity and water splashing prevention
Solution Approach 2:
The deck cover acts as an intermediary element between the front bumper and the footwell area. It serves as a barrier that prevents water from infiltrating into the footwell while maintaining the protective function of the front bumper, thus resolving the contradiction between structural protection and water splashing
2Object-affected harmful factors
If the front bumper unit is designed with sloping surface and guide surfaces, then water guidance and splashing prevention is improved, but the device complexity increases
Solution Approach 1:
The sloping surface and guide surfaces are integrated into the deck cover component rather than being separate parts. This merging of functions into a single component achieves effective water guidance and splashing prevention while minimizing the increase in device complexity
Solution Approach 2:
The deck cover features a sloping surface with curved geometry that naturally guides water away from the footwell area. This curved design effectively directs water flow without requiring complex mechanical structures, thereby preventing water splashing while maintaining simplicity
3Stability of the object's composition
If the front bumper unit includes reinforcement member, then the resistance to deformation and structural stability is improved, but the weight and manufacturing complexity increase
Solution Approach 1:
The reinforcement member is strategically positioned at the rear of the front bumper unit where structural support is most needed. This localized reinforcement provides enhanced structural stability and resistance to deformation without unnecessarily increasing overall weight or manufacturing complexity throughout the entire bumper assembly
Data Source
AI summary
A personal watercraft includes a watercraft body and a front bumper unit. The watercraft body includes a hull, a deck, and a gunnel line being a joint between the hull and the deck. The front bumper unit is attached to a front of the watercraft body. The front bumper unit has a front end located above and forward of the gunnel line in a side view of the watercraft body.