Bearing Ring Wall Radial Support for Thin Fan Stability
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Solution Overview
Problem
The miniaturization trend in electronic devices poses a challenge in configuring fan structures to prevent overheating of electronic components like CPUs and GPUs, as traditional fan configurations struggle to provide adequate cooling while maintaining a compact size.
Innovation Solution
A rotational assembly featuring a bearing with a large diameter and a first ring wall that surrounds a rotating shaft, providing a larger superficial area for oil pressure and supporting force, which reduces the thickness of the structure while maintaining stability and reducing swinging of the shaft during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the bearing diameter is increased to provide larger supporting force, then the supporting capability is improved, but the device size increases
Solution Approach 1:
The bearing structure transitions from a conventional compact form to a ring wall configuration that extends in the radial dimension. The first ring wall protrudes radially from the base, creating a larger effective bearing diameter without proportionally increasing the axial thickness, thus providing larger supporting force while controlling overall device size.
Solution Approach 2:
The rotating shaft is sheathed in the first ring wall, pre-establishing a stable rotational support structure before operation. This preliminary configuration ensures that the bearing provides adequate supporting force from the start, maintaining stability during rotation without requiring additional support mechanisms that would increase device size.
2Volume of moving object
If the bearing thickness is reduced to achieve miniaturization, then the device size is reduced, but the supporting force decreases
Solution Approach 1:
Instead of increasing axial thickness to enhance supporting force, the design extends the bearing structure radially through the first ring wall. This dimensional shift allows the bearing to achieve larger supporting force through increased radial span while maintaining reduced axial thickness, effectively decoupling the trade-off between size and strength.
Solution Approach 2:
The first ring wall is strategically positioned and dimensioned to concentrate bearing capacity where needed. The ring wall's radial extension creates localized structural reinforcement that provides enhanced supporting force specifically at the bearing interface, while the rest of the device maintains miniaturized dimensions.
3Temperature
If a fan structure is configured to provide adequate cooling, then the cooling performance is improved, but the device size increases
Solution Approach 1:
The bearing structure with the first ring wall serves multiple functions: it provides rotational support for the rotating shaft and simultaneously acts as a structural framework that can integrate cooling features. The ring wall's geometry allows for potential incorporation of heat dissipation pathways or attachment points for cooling elements, enabling the bearing to contribute to both mechanical support and thermal management within the same structural volume.
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 solution effectively supports the rotating shaft with a reduced thickness, enhancing operational stability and suitability for thin electronic devices by providing a larger supporting force and minimizing swinging, thus addressing the cooling challenges in compact electronic systems.
Implementation Method 1
the entire bearing includes a large diameter and provides a larger superficial area to generate an effective oil pressure acting force
Data Source
AI summary
A pivoting assembly includes a base, a bearing, and a rotating shaft. The bearing is disposed on the base and includes a first ring wall. The rotating shaft is sheathed in the first ring wall and rotatably disposed on the first ring wall. In this way, a larger superficial area is provided to generate an effective oil pressure acting force.