Garden Tool Battery Pack Mounting on Handle Assembly
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Solution Overview
Problem
In garden tools with electric starting engines, the vibration and heat generated by the engine can damage the battery pack and control panel, making them unreliable and difficult to maintain, especially since the engine and battery are often positioned behind the operator.
Innovation Solution
The battery pack is mounted on a handle assembly separate from the engine, allowing for easier installation and operation, with a detachable design and a circuit board positioned to reduce wiring complexity and improve accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the battery pack and engine are placed in the same location, then the structure is compact and power supply is convenient, but the battery pack is damaged by engine vibration and heat, reducing reliability
Solution Approach 1:
The patent divides the garden tool into distinct modules: the engine assembly and the handle assembly are separated. The battery pack is specifically placed on the handle assembly rather than with the engine, physically segmenting the heat-generating and vibration-generating components from the battery pack. This segmentation resolves the contradiction by maintaining structural organization while protecting the battery pack from damage.
Solution Approach 2:
The battery pack is extracted from the engine compartment and relocated to the handle assembly. This extraction removes the battery pack from the harmful environment of engine heat and vibration, while the engine retains its compact configuration. The handling assembly serves as a separate mounting location that provides both protection and accessibility.
2Device complexity
If the battery pack is placed behind the operator, then the engine and battery are compactly arranged, but detection and response to accidents are delayed
Solution Approach 1:
The patent redistributes components along the longitudinal axis of the tool. By placing the battery pack on the handle assembly (forward position) rather than behind the operator (rear position), the design utilizes the length dimension of the tool to achieve both compact arrangement and improved visibility. The operator can now see the battery pack location more easily while maintaining efficient power delivery to the engine.
3Ease of operation
If the battery pack is detachably mounted on the handle assembly, then installation is convenient and maintenance is easier, but the mounting structure becomes more complex
Solution Approach 1:
The patent implements a dynamic mounting system where the battery pack can be easily attached and detached from the handle assembly. The mounting structure includes features like positioning protrusions and corresponding recesses that guide proper alignment, along with simple fastening mechanisms. This dynamic design allows for quick installation and removal without requiring complex tools or procedures, resolving the contradiction between ease of operation and structural complexity.
Data Source
AI summary
A garden tool includes a power assembly comprising an internal combustion engine having a starter motor; a battery pack for supplying power to the starter motor; a connecting rod assembly having two ends; a working head assembly, the working head assembly and the power assembly being respectively arranged at the two ends of the connecting rod assembly; and a handle assembly including two handles. One of the handles is on a left side of the connecting rod assembly, and another of the handles is on a right side of the connecting rod assembly. The battery pack is detachably assembled on at least one of the handles.