Pivotable Shaft Weed Wacker for Inaccessible Trimming
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Solution Overview
Problem
Conventional weed wackers face difficulties in reaching inaccessible areas such as weeds under bushes or lawn furniture, and are prone to damage when used near trees or shrubs due to their fixed design.
Innovation Solution
A mono-filament whip type weed cutter with a pivotable shaft and hinge joint, featuring interconnected support shafts, a rotating wheel, and a gear lock bar, allowing the cutting head to be positioned at various angles to access hard-to-reach areas without damaging the equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed design weed wacker is used, then the structure is simple and easy to manufacture, but it cannot reach inaccessible areas such as under bushes or lawn furniture
Solution Approach 1:
The shaft is divided into two separate sections (first shaft section and second shaft section) that can move independently relative to each other through the hinge joint, allowing the cutting head to reach inaccessible areas while maintaining manageable component sizes
Solution Approach 2:
The hinge joint enables the shaft to transition from a fixed rigid structure to a dynamic articulated structure that can bend and adapt its angle, allowing the cutting head to access areas under bushes and lawn furniture while the gear lock bar provides stability when needed
2Reliability
If a fixed design weed wacker is used, then the structure is stable, but it is prone to damage when brought into close proximity to trees, shrubs, or lawn furniture
Solution Approach 1:
The articulated hinge joint allows the shaft to flex and adapt its configuration when encountering obstacles like trees or shrubs, preventing damage by allowing the operator to maneuver the cutting head around obstacles rather than forcing through them
Solution Approach 2:
Dividing the shaft into two sections connected by a hinge joint creates independent movement capability, allowing one section to absorb or adapt to contact with obstacles while the other section maintains operational position
Data Source
AI summary
A mono-filament whip type weed cutter incorporating a pivotable shaft that enables the weed cutter to reach otherwise inaccessible weeds. The mono-filament whip type weed cutter includes two interconnected first and second trimmer support shafts. A rotating wheel connected to one end of the pivotable shaft. A power source is connected to an opposite end of the pivotable shaft. A hinge joint including a sprocket is disposed between and interconnecting the first and second trimmer support shafts. A gear lock bar secures the sprocket in place to position the first and second trimmer support shafts with respect to each other.