Modular Jet Pump Shield for Pontoon Boat Installation
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Solution Overview
Problem
Conventional jet pumps for watercraft are time-consuming to install, require numerous holes in the hull for component accommodation, leading to potential leakages and alignment issues, and are often incompatible with different watercraft sizes.
Innovation Solution
A compact modular 'plug and play' jet pump assembly for watercraft, comprising a marine engine, a jet drive with a rotatable shaft, and a shield that can be quickly assembled outside the boat and secured to the middle pontoon, creating a waterproof seal and reducing installation time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional jet pump installation methods are used, then the jet pump can be installed in the watercraft, but the installation process takes 5-7 hours and requires drilling numerous holes through the hull
Solution Approach 1:
The jet pump assembly is divided into separate modular components: the jet pump housing, the shield assembly with integrated mounting brackets, and the exhaust system. These segments can be assembled independently and then quickly integrated into the watercraft, eliminating the need for time-consuming custom fabrication and reducing installation time from 5-7 hours to approximately 1-2 hours.
Solution Approach 2:
The shield assembly is pre-fabricated with integrated mounting brackets and alignment features before delivery to the watercraft. This preliminary preparation allows the assembly to be directly installed into pre-prepared openings in the hull, eliminating the need for on-site drilling and alignment operations, thereby significantly reducing installation time.
2Ease of manufacture
If multiple holes are drilled through the hull to accommodate jet pump components, then the jet pump can be installed, but the risk of leakages increases
Solution Approach 1:
The shield assembly integrates multiple functions into a single component: it provides structural support for the jet pump, serves as a mounting platform for the exhaust system, and acts as a waterproof barrier when installed in the hull opening. This merging eliminates the need for multiple separate holes and fasteners, reducing leakage paths while maintaining installation ease.
Solution Approach 2:
A waterproof gasket or seal is introduced as an intermediary element between the shield assembly and the hull opening. This seal prevents water leakage at the interface, allowing the assembly to be easily installed while maintaining reliability against leakages.
3Adaptability or versatility
If conventional jet pumps are configured for single size watercraft, then the design is simplified, but compatibility with different watercraft sizes is limited
Solution Approach 1:
The shield assembly is designed with universal mounting brackets and adjustable components that can accommodate different watercraft sizes and configurations. The integrated design allows the same basic assembly to be adapted to various hull types and dimensions, providing versatility without requiring multiple specialized designs, thus balancing adaptability with reasonable complexity.
4Strength
If the jet pump assembly is installed with multiple fasteners and holes, then the components can be secured, but alignment issues and vibrations increase
Solution Approach 1:
The shield assembly incorporates asymmetric alignment features and self-leveling characteristics that automatically compensate for minor installation variations. The integrated mounting brackets are designed with built-in alignment guides and adjustment capabilities, allowing the assembly to self-correct alignment issues while maintaining strong securing through the same integrated fastening system, thereby eliminating the trade-off between securing strength and alignment precision.
Data Source
AI summary
A jet pump assembly includes a marine engine, a jet drive and a shield adapted to be secured to a transom of a watercraft. The shield has arms to which the marine engine is secured and legs to which an intake mount is secured. The jet drive is supported by the intake mount. The shield has at least one flange adapted to be secured to a middle toon of a pontoon boat. The shield covers an opening in the middle toon through which the marine engine is passed during assembly. A gasket between the shield and opening prevents water from entering the middle toon.