Motor Base Assembly Flexible Printed Circuit Adhesive Bonding
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Solution Overview
Problem
The existing head stack assembly configurations in storage devices are costly due to components like flex brackets, mounting screws, and gaskets, which also pose contamination risks and reduce drive cleanliness.
Innovation Solution
A flexible printed circuit assembly with a laminated structure and dynamic loop connection is used, eliminating the need for mounting screws and gaskets by utilizing an adhesive seal to secure the flexible printed circuit to the motor base assembly, thereby reducing manufacturing costs and contamination risks while maintaining electrical connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mounting screws and gaskets are used to secure the flex bracket to the motor base assembly, then the electrical connection and mechanical stability are improved, but the manufacturing cost increases and contamination risk increases
Solution Approach 1:
The patent removes mounting screws and gaskets from the assembly, extracting the harmful elements that cause contamination and high manufacturing costs while maintaining the essential electrical connection function through an alternative adhesive-based approach
Solution Approach 2:
The patent replaces the mechanical fastening system (screws and gaskets) with an adhesive bonding system, substituting a mechanical connection method with a chemical bonding method that eliminates contamination sources while maintaining structural integrity
2Stability of the object's composition
If mounting screws and gaskets are used to secure the flex bracket to the motor base assembly, then the mechanical stability is improved, but the drive cleanliness deteriorates due to contamination sources
Solution Approach 1:
The patent extracts and removes mounting screws and gaskets from the assembly, eliminating the contamination sources these components represent while maintaining mechanical stability through adhesive bonding
Solution Approach 2:
The patent employs a simple adhesive material that, while potentially less durable than mechanical fasteners, provides sufficient stability for the application and eliminates the contamination risks associated with reusable mechanical components like screws and gaskets
3Reliability
If flex bracket with mounting screw holes and gasket are used, then the electrical connection is secured, but the device complexity increases
Solution Approach 1:
The patent merges multiple separate components (flex bracket, mounting screws, gasket) into a simplified assembly where the flexible printed circuit board is directly bonded to the motor base assembly using adhesive, reducing the total number of parts while maintaining electrical connection reliability
Solution Approach 2:
The adhesive seal serves multiple functions simultaneously: it provides mechanical bonding, seals the electrical connection, and eliminates the need for separate gaskets and mounting hardware, reducing overall device complexity
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 configuration reduces manufacturing costs and minimizes contamination risks, enhancing drive cleanliness and reliability by eliminating the need for screws and gaskets while maintaining effective electrical connections.
Implementation Method 1
utilizing an adhesive seal to secure the flexible printed circuit to the motor base assembly
Data Source
AI summary
A motor base assembly for a storage drive assembly includes a basewall and a plurality of sidewalls extending from the basewall to define an interior of the motor base assembly. The motor base assembly also includes a stiffener support portion disposed within the interior of the motor base assembly. The stiffener support portion includes a stiffener guide slot and a hole adjacent to the stiffener guide slot. The stiffener guide slot is configured to hold a first plate section of a second stiffener region of a flexible printed circuit and the hole is configured to guide a first stiffener region of the flexible printed circuit.