Outboard Motor Copilot Device for Steering Lock
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Solution Overview
Problem
Existing outboard motor steering systems lack a convenient and accessible mechanism for locking the motor in multiple steering positions, which can lead to increased prop torque and reduced steering control for operators.
Innovation Solution
A copilot device is introduced, featuring a manually operable input device and actuator mechanism that allows for easy locking and unlocking of the outboard motor in various steering positions, utilizing a brake mechanism with adjustable friction to facilitate smooth steering operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a steering lock mechanism is added to retain the outboard motor in multiple positions, then steering control is improved, but device complexity increases
Solution Approach 1:
The steering lock mechanism is divided into separate functional components: a friction plate for engagement, a friction lock with disc pads for securing, and an operation lever for actuation. This segmentation allows each component to perform its specific function efficiently while maintaining overall system manageability and reducing the complexity burden of the complete assembly.
2Reliability
If the friction lock is rigidly affixed to the outboard motor, then locking reliability is improved, but ease of repair worsens
Solution Approach 1:
The friction lock is designed as a separable component that can be extracted from the outboard motor assembly for service and replacement. The operation lever provides access to disengage the friction lock, allowing it to be removed and serviced without dismantling the entire steering mechanism, thus maintaining reliability while improving ease of repair.
3Ease of operation
If the copilot device is positioned above the steering arm for accessibility, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The copilot device is integrated with the existing steering arm structure, combining the locking function with the steering mechanism. The operation lever of the copilot device utilizes the same mechanical space and structural elements as the steering arm, allowing accessible operation from above while avoiding the need for separate, additional components that would increase complexity.
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
The copilot device enhances steering control by allowing operators to lock the outboard motor in desired positions, reducing prop torque and improving operational ease, while maintaining accessibility and ease of serviceability.
Implementation Method 1
The friction lock includes one or more disc pads. Movement of an operation lever urges the disc pads against the friction plate hold the friction plate and consequently, the steering arm, in a predetermined position.
Data Source
AI summary
An apparatus is for steering an outboard motor with respect to a marine vessel. The apparatus includes a transom bracket configured to support the outboard motor with respect to the marine vessel; a tiller for manually steering the outboard motor with respect to a steering axis; a steering arm extending above the transom bracket and coupling the tiller to the outboard motor such that rotation of the tiller causes rotation of the outboard motor with respect to the steering axis, wherein the steering arm is located above the transom bracket; and a copilot device configured to lock the outboard motor in each of a plurality of steering positions relative to the steering axis. The copilot device extends above and is manually operable from above the steering arm.