Disk Device Column Recess Attachment for Airtight Base
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Solution Overview
Problem
The manufacturing of disk devices, such as hard disk drives, faces challenges in designing the peripheral components, particularly in forming support structures like protrusions and columns, which can lead to issues like blowholes and gas leaks, making it difficult to achieve precise and airtight constructions.
Innovation Solution
The design incorporates a column and protrusion system where the column is attached to a recess in the base rather than a through-hole, allowing for easier manufacturing and preventing gas leaks, while the protrusion is formed shorter to avoid deformation and facilitate assembly, with a screw system ensuring precise alignment and attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a through-hole is used to attach the column to the base, then the column can be securely fixed, but gas leaks and blowholes occur making it difficult to achieve airtight construction
Solution Approach 1:
The patent divides the attachment structure into two separate components: a recess formed in the base and a column attached to that recess. This segmentation eliminates the need for a through-hole that penetrates the base, thereby preventing gas leaks while maintaining secure attachment of the rotational component.
2Stability of the object's composition
If the protrusion is formed longer to provide support, then structural stability is improved, but deformation occurs during manufacturing and assembly
Solution Approach 1:
The patent uses a recess that is partially formed in the base rather than a complete through-hole. This partial action provides sufficient structural support for stabilizing the rotational component while avoiding the excessive length that would cause deformation during manufacturing and assembly.
3Manufacturing precision
If complex support structures are designed to ensure precision, then rotational accuracy is improved, but manufacturing complexity increases leading to blowholes and assembly difficulties
Solution Approach 1:
The patent extracts the harmful through-hole structure from the design and replaces it with a simpler recess structure. This extraction eliminates the complexity of forming complete through-holes while maintaining the necessary precision for rotational accuracy, thereby reducing manufacturing complexity and preventing blowholes.
Data Source
AI summary
According to one embodiment, a disk device includes a plurality of magnetic disks, a casing, a column, a rotary component, and a screw. The casing includes a base having an inner space in which the plurality of magnetic disks is accommodated, and a first cover attached to the base to close the space. The column with a screw hole, is located in the space and is attached to the base by being fitted into a recess formed in the base. The rotary component is located in the space, surrounds the column, and is configured to rotate about the column. The screw is fitted into the screw hole through the first cover.