Disk Device PCB Side Wall Mounting for Board Area
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Solution Overview
Problem
The increasing performance of disk devices, such as hard disk drives, leads to a reduction in the board mountable area on the bottom surface of the housing, limiting the arrangement of electronic components and the number of magnetic disks.
Innovation Solution
The implementation of a disk device design where the PCB is attached to the outer surface of the side wall of the housing, rather than the bottom wall, allowing for a larger size and increased flexibility in designing the PCB without interfering with the internal components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the PCB is mounted on the bottom surface of the housing, then the disk device can be assembled, but the board mountable area is reduced and the arrangement of electronic components is limited
Solution Approach 1:
The patent moves the PCB mounting location from the bottom surface (2D plane) to the side surface of the housing, utilizing a different spatial dimension. This dimensional shift provides access to additional mounting area and allows electronic components to be arranged more freely on the side surface, resolving the contradiction between limited board area and arrangement flexibility.
2Productivity
If more or larger electronic components are mounted on the board, then the performance of the disk device is improved, but the board mountable area decreases
Solution Approach 1:
By relocating the PCB to the side surface of the housing, the patent accesses additional spatial dimensions for component placement. This enables mounting of more and larger electronic components without being constrained by the limited bottom surface area, thus improving disk device performance while maintaining adequate mounting space.
3Quantity of substance
If the number of magnetic disks is increased, then the storage capacity is improved, but the board mountable area is reduced
Solution Approach 1:
The relocation of the PCB to the side surface creates additional mounting real estate that can accommodate the increased electronics required for managing a higher number of magnetic disks. This dimensional shift decouples the constraint between disk quantity and available board area.
4Adaptability or versatility
If the PCB size is increased to accommodate more components, then the component arrangement flexibility is improved, but the interference with internal components may occur
Solution Approach 1:
The patent extracts the PCB from the bottom surface location and relocates it to the side surface of the housing. This separation removes the PCB from the internal component space, allowing the PCB to be enlarged for better component arrangement flexibility without causing interference with the magnetic disks and other internal components.
Data Source
AI summary
A disk device according to one embodiment includes magnetic disks, a spindle motor, a housing, a first board, and a first connector. The magnetic disks are arranged in an axial direction. The spindle motor rotates the magnetic disks about a first rotation axis. The magnetic disks and the spindle motor are accommodated in an inner space in the housing. The housing includes a first wall having the spindle motor attached thereto, and a second wall protruding from the first wall to surround the inner space. The first board is attached to an outer surface of the second wall. The first connector is attached to the first board and is connected to an external device. Each of the magnetic disks has a diameter of 80 mm or more and 100 mm or less. The housing has a maximum dimension of 26.2 mm or more in the axial direction.