Head stack assembly and disk drive apparatus provided with the same
A magnetic head and component technology, applied in the field of magnetic head stack components, can solve the problems that the position of the center of gravity is easy to fluctuate, increase assembly deviation, and the number of assembly processes cannot be reduced.
Inactive Publication Date: 2009-07-01
KK TOSHIBA
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0009] However, in the case of a configuration in which puppet arms and spacers are stacked in layers, as described in the above patent documents, it is difficult to reduce the manufacturing cost of the entire magnetic head stack assembly because the puppet arms require relatively high cost.
In addition, the number of assembly steps cannot be reduced since the puppet arms and spacers to compensate for the HGA reduction must be attached to the support portion during assembly
For each group of puppet arms, the assembly deviation will be increased, making the position of the center of gravity prone to fluctuations
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] Now referring to the drawings, an HDD according to an embodiment of the present invention will be described in detail. figure 1 Shows the internal structure of the HDD with the top cover removed. Such as figure 1 As shown, the HDD has a housing 10. The housing 10 includes a base 12 in the form of a rectangular box with an open top, and a top cover 14 fixed to the base by screws 11 to close the top opening of the base. The base 12 includes a rectangular bottom wall 12a and a side wall 12b installed along the outer edge of the bottom wall.
[0023] The housing 10 accommodates a magnetic disk 16 as a recording medium, and a spindle motor 18 as a driving part for supporting and rotating the magnetic disk. The spindle motor 18 is located on the bottom wall 12a. The size of the housing 10 is large enough to accommodate a plurality of disks, for example two, and the spindle motor 18 is configured to support and drive two disks.
[0024] The housing 10 also contains a magnetic he...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
Login to View More
Abstract
According to one embodiment, a head stack assembly includes a bearing portion configured to be mounted with a maximum number of arms and a plurality of spacers, a smaller number of arms than the maximum number attached to the bearing portion and extending in the same direction from the bearing portion, a spacer attached to the bearing portion and stacked in layers between the adjacent arms, suspensions and heads attached to the arms, individually, a support frame which supports a coil, and a dummy spacer attached to the bearing portion so as to overlap the arms. The dummy spacer integrally includes a spacer body formed with a thickness equal to the sum of those of the smaller number of arms than the maximum and the spacer arranged between the smaller number of arms, and a balancing portion extending along the extension of the arms from the spacer body.
Description
Background technique [0001] The present invention relates to a head stack assembly for a disk drive unit having a disk recording medium, and to a disk drive unit having the assembly. [0002] In recent years, disk devices, such as magnetic disk devices, optical disk devices, etc., have been widely used as external recording devices for computers or image recording devices. [0003] A magnetic disk device, such as a hard disk drive (HDD), generally includes one or more magnetic disks, spindle motors, magnetic head(s), head stack components, voice coil motors, circuit board units, etc. The spindle motor drives the disk to rotate. The head reads from the disk and writes data to the disk. The head stack assembly supports the head. The voice coil motor drives the head stack assembly. These components are contained in a housing with a basic sealing structure. [0004] The head stack assembly includes a bearing part, a head suspension assembly (HGA) extending from the supporting part, an...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/48G11B5/55
CPCG11B5/5569
Inventor 伊藤一朗藤本真仁
Owner KK TOSHIBA