Marine Propulsion Lower-Case Power Layout for Simpler Wiring
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Solution Overview
Problem
Conventional marine propulsion devices require complex wiring of power lines from the hull to the lower case through the upper case, leading to upsizing of the device.
Innovation Solution
Locate at least a portion of the driven unit, electric actuator, power generator, and first power line within the lower case, eliminating the need for wiring through the upper case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If power lines are wired from the hull to the lower case through the interior of the upper case, then the battery and shift motor can be powered, but the wiring becomes complicated and the device size increases
Solution Approach 1:
The patent merges the power generator, electric actuator, and their power lines into the lower case assembly. By combining these components that were previously distributed across multiple cases, the patent eliminates the need for complex wiring through the upper case interior, directly resolving the wiring complexity issue while maintaining power supply functionality.
Solution Approach 2:
The patent extracts the power generator and electric actuator from the traditional distribution across upper and lower cases, and consolidates them entirely within the lower case. This extraction and relocation eliminates the wiring pathway through the upper case interior, simplifying the overall wiring structure while preserving the necessary power supply connections.
2Ease of operation
If power lines are wired from the hull to the lower case through the interior of the upper case, then the battery and shift motor can be powered, but the device size increases
Solution Approach 1:
By merging the power generator, electric actuator, and power lines into the lower case, the patent eliminates the need for additional wiring space in the upper case. This consolidation reduces the overall device volume while maintaining all necessary power supply connections, directly addressing the upsizing problem.
3Quantity of substance
If the battery is disposed in the hull, then power can be stored, but power lines must be routed from the hull to the lower case through the upper case
Solution Approach 1:
The patent combines the power generator with the electric actuator and power lines in the lower case, creating a self-contained power and control system. This merging eliminates the need for separate power line routing from the hull battery through the upper case, reducing wiring complexity while preserving the battery's power storage function in the hull.
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
Simplifies the wiring of power lines and avoids upsizing of the marine propulsion device by integrating key components and power lines within the lower case.
Implementation Method 1
a power generator to generate power using a torque of the drive shaft or the propeller shaft
Data Source
AI summary
A marine propulsion device includes a drive shaft, a propeller shaft, and a lower case that houses the propeller shaft. In the marine propulsion device, a power generator generates power using a torque of the drive shaft or the propeller shaft, and the generated power is supplied to an electric actuator to drive a driven unit through a first power line, wherein the electric actuator is controlled by a controller. At least a portion of the driven unit, at least a portion of the electric actuator, at least a portion of the power generator, and the first power line are located in the lower case.