Fan Guard Flexible Compression Member for Varying Flange Depths
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Solution Overview
Problem
Existing fan guards face challenges in securely attaching to fans with varying flange depths, leading to inefficiencies in installation time and manufacturing costs due to the need for customizable solutions or insecure attachments that result in rattling during operation.
Innovation Solution
A fan guard design incorporating a flexible member that compresses to accommodate different flange thicknesses, combined with snaps, ensures secure attachment without custom spacers, allowing for a single frame design that adjusts to various flange sizes and reduces manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws are used to attach fan guards to fans, then secure attachment is achieved, but installation time increases
Solution Approach 1:
The patent employs a flexible snap-fit member that can elastically deform to accommodate variations in flange depth. This flexible component allows for quick installation by simply snapping into place without requiring tools like screws, while still providing secure attachment through elastic retention force.
Solution Approach 2:
The snap-fit member is designed with elastic properties that allow it to change its physical state (compressed or expanded) during installation. This parameter change enables the member to adapt to different flange depths and maintain secure attachment without requiring precise manufacturing tolerances or custom spacers.
2Reliability
If custom spacers are used to accommodate different flange depths, then secure attachment is achieved, but manufacturing cost and complexity increase
Solution Approach 1:
The snap-fit member serves multiple functions: it accommodates various flange depths through elastic deformation, provides secure attachment through snap-fit engagement, and eliminates the need for custom spacers or specialized components for different fan sizes. This universal solution simplifies the overall assembly design.
Solution Approach 2:
The snap-fit member incorporates dynamic elastic properties that allow it to adapt to different installation conditions. Rather than being a rigid fixed-depth component, the elastic member can compress or expand to match the specific flange depth, providing a single universal solution for multiple fan configurations.
3Ease of manufacture
If a single frame design is used for all fan sizes, then manufacturing cost decreases, but secure attachment for all flange depths cannot be ensured
Solution Approach 1:
The elastic snap-fit member acts as a flexible element within the single frame design that compensates for variations in flange depth. This allows the frame itself to remain a standard universal component while the flexible member adapts to different fan sizes, maintaining both manufacturing simplicity and attachment reliability.
4Manufacturing precision
If rigid attachment methods are used, then manufacturing precision can be maintained, but rattling during operation occurs
Solution Approach 1:
The elastic snap-fit member provides a flexible connection that can absorb vibrations and prevent rattling during fan operation. Unlike rigid attachments that transmit vibrations directly, the elastic member acts as a vibration isolator while maintaining secure attachment, eliminating the harmful rattling effect.
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
Facilitates fast and secure fan installation with reduced manufacturing costs and eliminates rattling issues by accommodating a range of flange thicknesses with a single frame design, enhancing operational stability and efficiency.
Implementation Method 1
The flexible member may compress backwards into a cavity between the flexible member and the frame depending an the thickness of the flange of the fan
Implementation Method 2
a flexible member that compresses to accommodate different flange thicknesses
Data Source
AI summary
Example implementations relate to a fan guard device. One example fan guard device includes a frame to receive a fan. The example fan guard device includes a plurality of snaps extending in a first direction from the frame. The snaps engage the fan. The fan guard device includes at least one flexible member extending in the first direction from the frame to engage a flange of the fan. The flexible member may compress and remain in contact with the flange. The amount of compression of the at least one flexible member may accommodate a range of flange thicknesses of the fan.