Fan Unit Vibration Isolation via Segmented Chassis Design
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Solution Overview
Problem
Conventional fan assemblies in electronic devices experience vibration transmission issues due to the axial fans being held by the chassis, which can adversely affect the connection between the power supply connector and the connection plug, leading to potential disconnection or failure.
Innovation Solution
A fan assembly design featuring a plurality of axial fans arranged in a direction intersecting the rotation axis, a connector for electrical connection, and a first vibration-proof portion on the chassis' outer surface to suppress vibration transmission, along with additional vibration-proof elements to prevent chassis abutment and enhance assembly workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If axial fans are held by the chassis, then the fan assembly structure is simple and easy to manufacture, but vibration is transmitted to the connector and connection plug, adversely affecting the connection
Solution Approach 1:
The chassis is divided into a first chassis portion and a second chassis portion, with the connector mounted on the first portion and the axial fans mounted on the second portion. This segmentation spatially separates the vibration source (fans) from the sensitive connection component, preventing vibration transmission while maintaining structural simplicity and ease of manufacture.
2Ease of operation
If guide pieces are slidably connected to the connection plug, then the connector and plug can be easily connected, but vibration is transmitted to the power supply connector and connection plug, potentially causing disconnection
Solution Approach 1:
The guide pieces are extracted from the connection plug and relocated to the second chassis portion, where they guide the insertion of the connection plug without being part of the plug itself. This extraction separates the guiding function from the connection component, allowing easy operation while preventing vibration transmission to the connection interface.
3Volume of moving object
If the chassis accommodates both axial fans and connector, then the structure is compact, but vibration from fans affects the connector location
Solution Approach 1:
The chassis is divided into two portions positioned at different locations, with the connector on the first portion and fans on the second portion. This spatial arrangement in another dimension (separate chassis portions rather than adjacent components) maintains compact overall volume while effectively isolating the connector from vibration harm.
Data Source
AI summary
A fan assembly includes axial fans, a connector, a chassis portion, and a first vibration-proof portion. The axial fans are arranged in a first direction intersecting the rotation axis extending in the axial direction. The connector is closer to one side of the first direction with respect to the axial fans, and electrically connects the axial fans and an external device. The chassis portion accommodates the axial fans and the connector. The first vibration-proof portion is located on an outer surface of an end portion on the one side in the first direction of the chassis portion, and protrudes outward.