Hard Hat Fan Mounting Bracket and Duct System
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Solution Overview
Problem
Conventional hard hats with integrated fans often provide inadequate cooling, restrict accessory attachment, and hinder fan adjustment, leading to uncomfortable and obstructed fan positioning, especially in hot and unventilated environments.
Innovation Solution
A hard hat fan system featuring a detachable fan mounting bracket, a hinge with a stopping structure, and a manifold system that includes a primary duct and secondary ducts with air vents for improved air distribution and cooling, along with a power source system for counterbalancing weight and accessory attachment, allowing for secure and adjustable fan placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fan is integrated into the hard hat shell, then cooling function is provided, but accessory attachment is restricted and fan adjustment is hindered
Solution Approach 1:
The fan system is segmented from the hard hat shell through a detachable mounting bracket. The bracket includes a mounting plate with channels that couple to ridges on the shell, allowing the fan to be attached and detached independently. This segmentation resolves the contradiction by enabling accessory attachment flexibility while maintaining cooling functionality when the fan is mounted.
Solution Approach 2:
The fan mounting system incorporates a hinge with a stopping structure that enables dynamic positioning. The hinge allows the fan to be adjusted to different angles and positions, with the stopping structure preventing excessive movement. This dynamic capability resolves the contradiction by allowing fan adjustment for optimal cooling while maintaining secure attachment.
2Temperature
If a fan is integrated into the hard hat shell, then cooling function is provided, but fan adjustment is hindered
Solution Approach 1:
The hinge mechanism with stopping structure provides dynamic adjustment capability. The hinge allows the fan assembly to rotate and adjust to different positions, while the stopping structure defines acceptable range limits. This enables easy fan adjustment for optimal cooling performance without requiring disassembly or complex mechanisms.
Solution Approach 2:
The mounting bracket serves as an intermediary between the fan and the hard hat shell. It includes a mounting plate with channels that couple to ridges on the shell, providing a flexible interface that allows fan adjustment while maintaining secure attachment. This intermediary structure resolves the contradiction by decoupling the fan adjustment function from the rigid shell structure.
3Temperature
If air is directed through the impact absorbing layer, then cooling efficiency is improved, but the structure becomes more complex
Solution Approach 1:
The air distribution system merges the primary duct with secondary ducts that utilize the existing impact absorbing layer structure. The impact absorbing layer includes channels that serve dual purposes: providing structural impact protection and guiding air flow from the fan to air vents. This merging resolves the contradiction by using the existing layer for both protection and air distribution, avoiding additional complex structures.
Solution Approach 2:
The impact absorbing layer is designed with integrated air channels that provide multiple functions: structural impact protection and air flow guidance. The channels extend from the outer surface to air vents, allowing the same structure to serve both safety and cooling distribution purposes. This multi-functionality resolves the contradiction by eliminating the need for separate air distribution structures.
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 system provides enhanced cooling comfort, secure accessory attachment, and adjustable fan positioning, improving user safety and productivity in various work environments by ensuring effective air circulation and balanced weight distribution.
Implementation Method 1
The fan system is configured to provide fluid communication for air between and exterior of the shell and the interior region
Implementation Method 2
The impact absorbing layer has an outer surface and an inner surface opposite the outer surface. The outer surface of the impact absorbing layer is coupled to the inner surface of the shell
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A hard hat fan system, comprising: a shell (11) having an inner surface and an outer surface opposite the inner surface; a fan (800) coupled to the outer surface of the shell; an impact absorbing layer (810), comprising: an outer surface (834) coupled to the inner surface of the shell; an inner surface (80) opposite the outer surface of the impact absorbing layer, the inner surface of the impact absorbing layer defining an interior region configured to receive a head of a user; a recessed surface (842) formed in the outer surface of the impact absorbing layer, the recessed surface defining a channel extending along the outer surface of the impact absorbing layer; and an air vent (844) extending from the recessed surface, through the impact absorbing layer, and to the inner surface of the impact absorbing layer; and a primary duct extending between the fan and the impact absorbing layer, the primary duct directing air into an inlet side of the channel; wherein the channel defines a secondary duct between the outer surface of the impact absorbing layer and the inner surface of the shell, such that air flows from the inlet side of the channel to the air vent and into the interior region; and wherein the hard hat fan system is configured to provide fluid communication for air between an exterior of the shell and the interior region.