Dual-Handle Blower Layout for Recoil Balance and Lower Fatigue
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional blowers cause user fatigue due to recoil force and increased weight from battery packs, limiting long-term operation and performance.
Innovation Solution
A blower design featuring a double-handle structure with the battery pack positioned to reduce recoil force distance, allowing for increased battery pack weight and power, enhancing airflow volume while minimizing user burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the battery pack weight and blower weight are increased to improve performance, then the airflow volume and power are improved, but the user fatigue is increased and long-term operation is limited
Solution Approach 1:
The patent positions the battery pack as a counterweight component to balance the recoil force generated by the blower. By strategically locating the heavy battery pack near the center of gravity and using it to counterbalance the aerodynamic recoil, the design allows increased battery weight (improving airflow volume) without proportionally increasing user burden. The battery pack serves dual purposes: power supply and recoil counterbalancing.
2Productivity
If the battery pack weight is increased to improve performance, then the airflow volume is improved, but the user burden is increased
Solution Approach 1:
The battery pack is positioned to function as a counterweight that offsets the recoil force. The patent specifically locates the battery pack between the user's hands when holding the blower, allowing its weight to counterbalance the aerodynamic recoil rather than adding to the user burden. This enables higher battery capacity (and thus higher airflow volume) while maintaining ease of operation.
Solution Approach 2:
The patent positions the battery pack at the center of gravity of the blower assembly, creating a balanced configuration where the heavy battery pack is equidistant from the user's hands. This equipotential positioning ensures that the recoil force and battery weight work together rather than against each other, allowing improved performance without increased user burden.
3Ease of operation
If conventional single-handle design is used, then the device complexity is low, but the user fatigue from recoil force is high
Solution Approach 1:
The patent divides the single handle into two separate handles positioned on opposite sides of the blower tube assembly. This segmentation allows the user to grip the blower in a way that distributes the recoil force across both hands, with the battery pack positioned between them. The dual-handle configuration reduces user fatigue from recoil while maintaining relatively simple device complexity.
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 double-handle structure reduces user fatigue and increases airflow volume, improving blower performance and battery life by balancing the blower's weight and center of gravity.
Implementation Method 1
When the blower ejects gas, the ejected object generates a recoil force in a reverse direction due to conservation of momentum.
Implementation Method 2
a motor; a fan driven by the motor to rotate about a central axis
Implementation Method 3
a battery pack for supplying power to the motor
Data Source
AI summary
A blower includes: a motor; a fan driven by the motor to rotate about a central axis; a battery pack for supplying power to the motor; and a blower tube assembly forming an air inlet for the entry of air and an air outlet for the exit of the air. The blower further includes: a first handle forming a first grip for a hold and a second handle forming a second grip for a hold, where at least part of a projection of the battery pack along a radial direction of the central axis on a plane passing through the central axis is located between the first handle and the second handle.