Universal Lighting Assembly for Walk-Behind Lawn Mowers
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Solution Overview
Problem
Walk-behind lawn mowers pose safety risks and visibility challenges, especially in low-light conditions, due to the difficulty in seeing the mowing area and potential obstructions, leading to accidents from rotating blades.
Innovation Solution
A universal lighting assembly that detachably couples to variously sized and shaped handles of walk-behind lawn mowers using spring-biased lateral arms, providing directional and intensity adjustable illumination with LEDs to enhance visibility and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If mowing is performed in low-light conditions to avoid heat, then energy consumption is reduced and operator comfort is improved, but visibility of the mowing area and obstructions deteriorates
Solution Approach 1:
The patent introduces lighting assemblies as an intermediary element that provides artificial illumination to the mowing area. The lighting assembly includes a light source, housing, and mounting structure that attaches to the mower handle, serving as a mediator between the operator and the low-light environment to enable safe operation during cooler hours.
2Reliability
If lighting assembly is added to improve visibility, then safety and visibility are improved, but device complexity increases
Solution Approach 1:
The lighting assembly is designed with universal mounting capabilities that can attach to various handle types and sizes. The adjustable mounting structure and multiple attachment points allow the same lighting unit to be installed on different mower models, reducing overall system complexity through standardization and multi-functionality.
Solution Approach 2:
The lighting system is divided into separate modular components including the light source, housing, mounting brackets, and adjustment mechanisms. This segmentation allows for easier installation, maintenance, and replacement of individual parts without affecting the entire system, thereby managing complexity.
3Adaptability or versatility
If lighting assembly is made universal for various handle sizes, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The mounting structure incorporates adjustable and movable components that can adapt to different handle diameters and configurations. The dynamic adjustment mechanisms allow the mounting brackets to accommodate various handle sizes within specified ranges, achieving universality without requiring extremely tight manufacturing tolerances for all possible variations.
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 lighting assembly improves safety and visibility during low-light mowing operations by providing focused illumination of the mowing area, reducing the risk of accidents and ensuring a neatly mowed lawn.
Implementation Method 1
spring-biased lateral arms
Implementation Method 2
at least one LED
Data Source
AI summary
A universal lighting assembly detachably couples to a handle of a walk-behind lawn mower to illuminate areas in front of lawn mower. The assembly is universal, and thus operable with wide varieties of walk-behind lawn mowers. The lighting assembly comprises a light housing having a left side, a right side, and a front face with at least one LED. A left-side and a right-side arm project outwardly from the light housing. A concave clamp from each arm couples to the mower handles. A cylindrical drum couples to the left-side and right-side arms. The clamps and drum are stationary and not designed to rotate when clamped to the handle; thereby permitting rotation of the housing. A spring is housed within the cylindrical drum and with opposing ends coupled to left and right-side arms. The spring biases each arm in a longitudinal direction of cylindrical drum against lawn mower handles.