Sailboat Control Handle with Multi-Mode Engagement Positions
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Solution Overview
Problem
Current control systems for electric drive systems on sailboats lack an intuitive and efficient method to manage different drive modes, including forward, reverse, idle, and energy generation, which can be cumbersome and inefficient, especially when integrated with steering mechanisms.
Innovation Solution
A control handle with multiple engagement positions for a sailboat's electric drive system, allowing a user to switch between forward drive, reverse drive, idle drive, and hydro energy generation modes using a single hand, with an electronic control unit receiving signals to control the electric machine connected to the propeller, enabling wireless or wired communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate levers are used to control motor speed and direction, then the electric motor can be controlled, but the control complexity increases and operational efficiency decreases
Solution Approach 1:
The patent combines multiple control functions (forward/reverse drive mode selection and speed control) into a single control handle with integrated mechanisms. The handle includes both a rotational control mechanism for speed regulation and a longitudinal movement mechanism for drive mode selection, allowing the operator to control the electric motor's direction and speed with one hand using one unified device rather than separate levers
Solution Approach 2:
The control handle is designed as a multi-functional device that can perform multiple operations: selecting forward drive mode, selecting reverse drive mode, and controlling motor speed, all through a single handle. This universal control mechanism replaces what would traditionally require separate control devices, simplifying the overall control system while maintaining comprehensive functionality
2Ease of operation
If the control handle is positioned away from the steering wheel, then the control mechanisms can be separate, but the operator cannot easily control both steering and drive modes simultaneously
Solution Approach 1:
The control handle is integrated with the steering wheel assembly, positioned on the same pedestal or mounting structure. This physical integration allows the operator to access both steering and drive control functions from a single location, enabling simultaneous control of boat direction and motor operation without requiring hand movement between separate control stations
3Loss of energy
If the propeller creates drag in idle mode, then the boat experiences resistance, but the propeller is still connected to the electric machine
Solution Approach 1:
The control system dynamically adjusts the connection state between the propeller and electric machine based on the selected drive mode. In idle mode, the system automatically disconnects the propeller from the electric machine to eliminate drag resistance, while maintaining the capability to quickly reconnect when drive modes are selected. This dynamic adjustment optimizes energy efficiency without compromising operational reliability
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
Enables seamless control of the electric drive system with one hand, reducing operational complexity and energy efficiency by allowing the sailboat to generate electricity while sailing, minimizing drag in idle mode, and ensuring easy access near the steering wheel for convenient operation.
Implementation Method 1
an electric machine (5) that is drivingly connected to a propeller (7)
Implementation Method 2
a propeller (7)... In the first engagement position, the forward drive mode is engaged, which will rotate the propeller in a forward direction
Implementation Method 3
In the fourth engagement position, the hydro energy generation mode is engaged, in which the electric machine is rotated by the propeller such that the electric machine generates electricity to charge the battery
Data Source
AI summary
A control handle for controlling an electric drive system of a sailboat is provided. The control handle comprises a handle and a handle shaft, where the control handle is provided with a plurality of engagement positions. A first engagement position is adapted to engage a forward drive mode of the electric drive system, a second engagement position is adapted to engage a reverse drive mode of the electric drive system, a third engagement position is adapted to engage an idle drive mode of the electric drive system, and a fourth engagement position is adapted to engage a hydro energy generation mode of the electric drive system.