JPH0359867A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To obtain a magnetic disk device which can position a magnetic head in a stable state by making a collar or a vibration proof rubber to be an oval shape. CONSTITUTION:An oval hole is made in the circular vibration proof rubber 3 and the collar 4 whose shape is oval is mounted on the vibration proof rubber 3. The spring constants of the vibration proof rubber 3 in the directions of X and Y can be adjusted by the compression of the collar 4, and only the spring constant in either of the direction of X or Y can be changed. Since only the spring constant in the specified direction can freely be set, the rolling of a disk enclosure in the specified direction can be controlled. Thus, the magnetic head can be positioned in the stable state.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a magnetic disk device, and particularly to a disk enclosure equipped with a head assembly and a disk assembly, or a plurality of disk enclosures with collars mounted concentrically inside. The present invention relates to a magnetic disk drive that is attached to a frame via anti-vibration rubber.

[Conventional technology]

Conventionally, this type of magnetic disk device has a disk assembly equipped with a head assembly and a disk assembly, as shown in FIG.
Enclosure 1 is disk enclosure 1
Attach collar 7 to frame 2 for attaching to the system side.
are attached at multiple locations with screws 5 via vibration isolating rubber 6 that is concentrically mounted inside.

However, since the load is not applied equally to all the vibration isolating rubbers 6 that support the disk enclosure 1, if vibration isolating rubbers of the same shape and hardness are used, the difference in displacement between the vibration isolating rubbers cannot be calculated. Ljiru. When vibration etc. are applied to the frame 2, the disk enclosure 1 behaves unstablely (referred to as rolling), and the rotating magnetic disk (
(not shown) caused a gyroscopic movement, which caused an adverse effect on the positioning of the magnetic head. Therefore, conventionally,
In order to suppress the rolling of the disk enclosure 1, the hardness of the anti-vibration rubber 6 was changed to adjust the amount of displacement and maintain balance.

[Problem to be solved by the invention]

The conventional magnetic disk drive described above has a circular shape as shown in Figures 2(a) and (b) using anti-vibration rubber, so by changing the hardness it can be used not only in the required direction but also in other directions. This also changes the spring constant in the direction, which has the disadvantage of adversely affecting the previously stable direction.

An object of the present invention is to stabilize the state in which the disk enclosure is held against the frame of the magnetic disk drive, and to position the magnetic head while keeping the behavior of the disk enclosure stable when the frame is subjected to vibrations etc. from the outside. An object of the present invention is to provide a magnetic disk device δ.

[Means to solve the problem]

The magnetic disk device id of the present invention? The anti-vibration rubber or collar has an oval outer shape.

[Effect]

Depending on the length of the major and minor axes of the ellipse, the X direction (long axis direction)
, the spring constant in the Y direction (minor axis direction) can be set to 111.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1(a) is a plan view of the area around the anti-vibration rubber of a magnetic disk device according to an embodiment of the present invention, and FIG. 1(b) is a plan view of the area around the vibration-proof rubber
It is a sectional view taken along the line A-A of FIG.

In this embodiment, an oval hole is made in the circular vibration isolating rubber 3, and a collar 4 having an oval outer shape is attached to the vibration isolating rubber 3. The rest is the same as the conventional example shown in FIG.

The spring constants of the anti-vibration rubber 3 in the X direction and the Y direction can be adjusted by adjusting the flatness of the collar 4, and it is also possible to change the spring constant in either the X direction or the Y direction. Further, the same applies to a combination in which the outer shape of the collar is circular and the outer shape of the anti-vibration rubber is oval.

〔Effect of the invention〕

As explained below, in the present invention, by making the anti-vibration rubber or the collar into an elliptical shape, only the spring constant of the specific direction σ11 can be freely set.
This has the effect of suppressing the enclosure from rolling in a specific direction.

[Brief explanation of drawings]

FIG. 1(a) is a plan view of the area around the anti-vibration rubber of a magnetic disk device according to an embodiment of the present invention, and FIG. 1(b) is a plan view of the area around the vibration-proof rubber
2(a) is a cross-sectional view taken along line A-A of FIG. 3.
The surrounding plan view, Figure 2 (b) is A-A in Figure 2 (a)
A line sectional view and FIG. 3 are exploded perspective views of a disk enclosure 1 and a frame 2 of a conventional magnetic disk device. 1... Disk enclosure 2... Frame, 3... Anti-vibration rubber, 4...
...Color, 5...Screw.

Claims (1)

[Claims] 1. In a magnetic disk drive in which a disk enclosure equipped with a head assembly and a disk assembly is attached to a frame via a plurality of anti-vibration rubbers having a collar concentrically attached inside, the collar or A magnetic disk device characterized in that the vibration-proof rubber has an oval outer shape.