Walk-Behind Tool Handle Blower for Cooling and Insect Repelling
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Solution Overview
Problem
Users of outdoor power tools, such as mowers, experience discomfort due to high temperatures and insect disturbances, which affect work efficiency and experience.
Innovation Solution
A walk-behind power tool equipped with a blowing device that includes a fan or bladeless fan mechanism to generate airflow, connected to the tool's energy source via a USB interface or inductive charging, for temperature reduction and insect repelling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a blowing device is added to the walk-behind power tool, then user comfort is improved by cooling and insect repelling, but device complexity increases
Solution Approach 1:
The patent combines a blowing device with an existing walk-behind power tool (mower), integrating multiple functions into a single device. The blowing device includes a fan driven by a motor that can be powered by the tool's existing energy source, creating a multi-functional system that provides both cutting and cooling/insect repelling capabilities.
Solution Approach 2:
The blowing device is designed to serve multiple purposes: cooling the user during hot weather and repelling insects. The same fan system that generates cooling airflow also creates the air movement necessary to deter insects, allowing a single added component to address multiple harmful factors simultaneously.
2Object-affected harmful factors
If a blowing device with motor and fan is added, then cooling and insect repelling functions are achieved, but weight of the tool increases
Solution Approach 1:
The blowing device is designed to be self-powered by utilizing the existing energy source (battery) of the walk-behind power tool. The motor driving the fan draws power from the same battery that powers the cutting mechanism, eliminating the need for a separate power source and reducing overall weight compared to having dual independent power systems.
3Ease of operation
If the blowing device is integrated into the handle device, then ease of operation is improved by positioning airflow near user, but device complexity increases
Solution Approach 1:
The blowing device is specifically positioned at the handle device location, which is close to the user's body during operation. This localized placement ensures that the cooling airflow and insect repelling effects are concentrated where they are most needed - around the user - rather than distributing the function throughout the entire tool structure.
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 blowing device effectively reduces user discomfort by providing cooling airflow and repelling insects, enhancing the overall work experience.
Implementation Method 1
a first motor driving at least fan blades to rotate to generate an airflow
Implementation Method 2
an energy source providing energy for at least the movement of the working assembly and a charging portion configured to be electrically connected to the walk-behind power tool so as to cause the first motor to obtain energy
Data Source
AI summary
A walk-behind power tool includes: an energy source providing energy for at least the movement of a working assembly; and a blowing device including a connecting portion configured to be connected to the walk-behind power tool, a first motor driving at least fan blades to rotate to generate an airflow, and a charging portion configured to be electrically connected to the walk-behind power tool so as to cause the first motor to obtain energy.