Handheld Fan Arched Mesh Assembly for Larger Motors and Adjustable Airflow
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Solution Overview
Problem
Existing handheld fans are limited by their design, which restricts the use of larger motors and fan blades with superior fluid dynamics, and have non-adjustable airflow angles due to fixed grilles and handles.
Innovation Solution
A handheld fan design featuring a mesh grid assembly with arc-shaped mesh components and a pivotable handle assembly, allowing for a larger motor and fan blades with improved fluid dynamics, and adjustable airflow angles through a pivotable mesh grid and handle system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If the front and rear grilles are fixed together as single units with straight or radially curved spokes, then the structure is simple and easy to manufacture, but the accommodating space for motors and fan blades is limited, resulting in suboptimal airflow performance
Solution Approach 1:
The patent applies curvature by designing arc-shaped spokes that extend in both radial and axial directions, creating a three-dimensional arched structure. This curved geometry efficiently utilizes the available space between front and rear grilles, maximizing the accommodating volume for motors and fan blades while maintaining structural integrity.
Solution Approach 2:
The patent transitions from two-dimensional flat or radially curved spokes to three-dimensional arc-shaped spokes that extend in multiple directions (radial and axial). This dimensional change creates additional internal volume without significantly increasing external dimensions, resolving the contradiction between compact size and accommodating space.
2Adaptability or versatility
If the front and rear grilles are fixed relative to handles, then the structure is stable and simple, but the airflow angle is non-adjustable or only allows minimal adjustments, reducing versatility
Solution Approach 1:
The patent introduces dynamic adjustability by enabling the front grille to rotate relative to the handle around a rotation axis. This dynamic mechanism allows users to adjust the airflow direction according to different usage scenarios, transforming a static structure into an adaptable system while maintaining reasonable structural simplicity.
Data Source
AI summary
A handheld fan comprises a mesh grid assembly, a motor, and fan blades, wherein the mesh grid assembly comprises a front mesh component and a rear mesh component, the front mesh component and the rear mesh component are fixedly combined with each other, at least one portion of the front mesh component extends in a direction away from the rear mesh component, and at least one portion of the rear mesh component extends in a direction away from the front mesh component; the motor is accommodated between the front mesh component and the rear mesh component, and the motor drives the fan blades to rotate between the front mesh component and the rear mesh component.