Lawn Mower Control Panel and Seat Plate Integration
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Solution Overview
Problem
Existing lawn mower designs often have control panels that are not ergonomically positioned, making it difficult for operators to comfortably reach and actuate controls, and the fuel tank placement can obstruct the operator's view and increase the risk of debris accumulation in control cavities.
Innovation Solution
The design features a control panel positioned between an arm support surface and an elongated support structure that remains stationary with the seat plate, allowing for easy access to controls by the operator, and a U-shaped fuel tank placement that centralizes the center of gravity and minimizes obstruction, while also providing a gap for debris removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the control panel is positioned on a fixed structure away from the seat, then the control panel structure is simplified, but the operator cannot easily reach and actuate the controls
Solution Approach 1:
The control panel is merged with the armrest assembly, which is itself coupled to the movable seat plate. This integration allows the control panel to move with the seat, maintaining constant accessibility to the operator without requiring separate positioning mechanisms. The armrest serves dual functions as both support structure and control panel mounting structure.
Solution Approach 2:
The control panel is made dynamically positioned by coupling it to the movable seat plate through the armrest assembly. As the seat plate moves forward and backward, the control panel moves with it, ensuring the controls remain within easy reach of the operator throughout the range of motion.
2Volume of moving object
If the fuel tank is positioned close to the control panel, then the overall machine size is reduced, but debris can accumulate in the control cavity and the operator's view is obstructed
Solution Approach 1:
The fuel tank is extracted from immediate proximity to the control panel and positioned in the space between the seat assembly and the discharge opening. This separation removes the harmful effects of debris accumulation near controls and improves operator visibility while still maintaining a compact overall machine configuration.
Solution Approach 2:
The fuel tank is positioned in a different spatial dimension - between the seat assembly and discharge opening rather than directly adjacent to the control panel. This three-dimensional arrangement optimizes space utilization while avoiding the harmful effects of close proximity between fuel tank and controls.
3Volume of moving object
If the control panel is positioned far from the seat, then there is more space for fuel tank placement, but the controls become difficult to reach
Solution Approach 1:
The control panel is merged with the armrest assembly that is coupled to the movable seat plate, ensuring it moves with the seat and remains within easy reach. This integration allows the fuel tank to be positioned in the available space between the seat and discharge opening without compromising control accessibility.
Data Source
AI summary
A lawn mower includes a seat plate movably coupled to the frame. An operator seat is coupled to the seat plate. An armrest is laterally spaced from the operator seat and includes an elongated support, an arm support surface, and a control panel. The elongated support has a first end fixed to the seat plate and a second end. The arm support surface is coupled to the second end and can support a user's arm. The control panel is positioned between the arm support surface and the second end of the elongated support. The control panel is fixed to the elongated support for movement with the seat plate such that the control panel remains stationary relative to the seat plate. The control panel includes an actuator to control a function of the lawn mower. The actuator is configured to be actuated while the user's arm is on the support surface.