Conductive Adhesive Motor Mount for HDD Interference Suppression
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Solution Overview
Problem
Current Hard Disk Drive (HDD) assemblies experience performance degradation due to interference signals conducted through the metal enclosure, primarily caused by high resistance between components, which can originate from various sources including wireless communication signals.
Innovation Solution
The implementation of a high conductive adhesive and/or high conductive bearing seal to create a low resistance path between the motor assembly and the case, effectively suppressing interference signals by enhancing electrical conductivity within the HDD.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mounting methods are used to assemble the motor assembly to the base, then the manufacturing process is simple, but high resistance paths are created that conduct interference signals
Solution Approach 1:
The patent changes the electrical resistance parameter of the mounting adhesive from high resistance (traditional) to low resistance (conductive), transforming the electrical properties of the bonding material to suppress interference signals while maintaining the mounting function
Solution Approach 2:
The conductive adhesive serves as an intermediary material between the motor assembly and base, providing both mechanical bonding and electrical conduction functions, thereby eliminating the need for separate bonding and grounding operations
2Object-affected harmful factors
If conductive adhesive is used to provide low resistance path, then interference signals are suppressed, but the adhesive selection and application process becomes more complex
Solution Approach 1:
The conductive adhesive performs multiple functions simultaneously: mechanical bonding between components and electrical conduction for interference suppression, eliminating the need for separate bonding and grounding materials or processes
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
This solution significantly reduces parasitic resistance and capacitive elements, minimizing interference signals and improving HDD performance with minimal modifications to the manufacturing process and existing HDD structure.
Implementation Method 1
mounting the stationary portion of the motor assembly to the base utilizing the adhesive such that the adhesive provides a low resistance path between the base and the motor assembly
Data Source
AI summary
A method for manufacturing a hard disk drive is described. The method includes providing a motor assembly, the motor assembly comprising a stationary portion and a rotatable portion for rotating a magnetic disk with respect to said stationary portion and providing a base for receiving the motor assembly. The method further includes providing an adhesive for mounting the motor assembly to said base wherein the adhesive is electrically conductive and mounting the stationary portion of the motor assembly to the base utilizing the adhesive such that the adhesive provides a low resistance path between the base and the motor assembly.