JPH048872B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a magnetic disk device having a cooling fan on the front side of the device and having each unit arranged inside the device housing. The present invention relates to a magnetic disk device in which units are arranged to improve the cooling effect.

(2) Prior Art and Problems Conventionally, this type of magnetic disk device has a laminar flow type cooling fan 2 inside a front panel 1 on the front side of the device, as shown in FIG. In order to increase the cooling effect, a magnetic disk sealed inside the housing of the disk enclosure 4 is mounted in the housing 3 near the rear of the cooling fan 2 so that the surface of the magnetic disk medium is parallel to the bottom surface of the housing 3. The heat generating section protruding from the bottom side is mounted facing the bottom surface of the housing 3, a control circuit section 5 is provided on the side of the disk enclosure 4, and a power supply unit 6 is arranged at the rear of the device. was. Recently, as the rotational speed of a magnetic disk increases, the amount of heat generated by the DC motor that drives the magnetic disk increases, and the inside of the device housing 3 has become denser, causing the inside of the magnetic disk device to become hotter. It was something like that.

However, the cooling air by the cooling fan 2 is
As shown in FIG. 1, it flows into the interior from the front side of the front panel 1 as shown by arrow A, then rises inside the front panel 1 and is bent on the top surface of the device housing 3 as shown by arrow B. The water flows along the top and side surfaces of the disk enclosure 4 toward the rear of the device.

The reason for this will be explained using FIGS. 1 and 2. Second
In the figure, the same parts as in FIG. 1 are represented by the same numbers. Cooling air is taken in from the front panel 1 in the direction of A in the figure, and is sent at pressure P in the direction of arrow B' by the cooling fan 2. but,
If cooling air is sent in the direction of arrow C in the figure at a pressure P', P>P' due to the structure of the cooling fan 2, so sufficient airflow will not be obtained and the cooling effect inside the disk enclosure will deteriorate. . Therefore, the cooling air must flow in the direction of arrow B shown in FIG. However, since the cooling air flows upward in this way, the cooling air does not flow much to the heat generating parts such as the spindle motor and rotary voice coil motor that are protruded from the bottom side of the housing of the disk enclosure 4. However, the cooling effect was poor. As a result, the spindle motor, voice coil motor, etc. of the disk enclosure 4 overheat, causing equipment failure.

Additionally, the structure of the disk enclosure itself causes the following problems, which are illustrated in Figure 3.
This will be explained using FIGS. 4 and 5. Figure 3 is the first
FIG. 3 is a top plan view of the housing of the disk enclosure 4 in the figure. FIG. 4 is a bottom plan view of the disk enclosure 4 seen from the bottom of the housing. In the drawing, 7 is a signal cable for reading, writing, etc. 8, 8' is a cable to a rotary voice coil motor for driving a magnetic head and a cable to a spindle motor for driving a magnetic disk, and 9 is a cable for increasing the cooling effect. 1 is a spindle motor that protrudes outside the housing of the disk enclosure 4; 10 is a rotary voice coil motor that also protrudes outside the disk enclosure in order to increase the cooling effect; 22 is an elastic cushioning material such as anti-vibration rubber; 23 is a The mounting members 24 are mounting screws, and 25 is the floor surface of the housing. To make the disk enclosure 4 removable from the magnetic disk housing 25, the mounting screws 24 are inserted into the through holes on the side edges of the mounting members 23 fixed to the disk enclosure 4, and the mounting screws 24 are inserted into the through holes of the side edges of the mounting members 23 fixed to the disk enclosure 4. It is set in the buffer material 22. However, as shown in FIGS. 3 and 4, the disk enclosure 4 is equipped with a spindle motor 9.
A cable 8' for supplying driving power, etc., a cable 8 for driving the rotary voice coil motor 10,
Signal cable 7 for controlling reading and writing of information
is connected and wired around it, and other signal cables 11 are also wired. When the disk enclosure 4 is installed horizontally with respect to the magnetic disk medium surface inside the housing as shown in FIG. 1, each cable will cover the top of the mounting screw 24. Therefore, when removing or installing the disk enclosure 4, the work of tightening or loosening the mounting screws 24 from the upper part of the disk enclosure 4 using a screwdriver or the like becomes extremely troublesome. Furthermore, I had to be careful when handling the screwdriver etc. so as not to damage each cable. Furthermore, as the mounting density of magnetic disk casings increases recently, the above-mentioned drawbacks will increase even more.
Furthermore, as shown in FIG. 4, on the bottom side of the disk enclosure 4, there is a pivot section inside a rotary voice coil motor section 10 that seeks the magnetic head provided inside the housing.
When transporting the magnetic disk device, it is necessary to fix the pivot with the wing nut 12, but since the bottom side of the disk enclosure 4 faces the bottom of the device housing 3, it is not necessary to fix the pivot or maintain it. It was difficult to do.

(3) Purpose of the Invention The present invention has been made to solve the above-mentioned problems, and provides a magnetic disk device that can improve the cooling effect on the heat generating part of a disk enclosure and improve workability and maintainability. The purpose is to provide

(4) Structure of the Invention According to the present invention, a magnetic disk medium and a magnetic head are sealed inside a housing, and a spindle motor for driving the magnetic disk medium and a voice coil motor for driving the magnetic head are installed in the housing. A magnetic disk device equipped with fixed disk enclosures and having a cooling fan on the front, wherein a spindle motor and a voice coil motor in the disk enclosure are arranged so as to protrude from one side of the housing. The disk enclosure is mounted so that the magnetic disk medium is perpendicular to the bottom surface of the magnetic disk device housing, and an air path for cooling air by the cooling fan is provided between the disk enclosure and the inner wall of the device housing. This is achieved by providing a magnetic disk device characterized in that the spindle motor and the voice coil motor have projecting portions from the housing located within the air passage.

(5) Embodiments of the invention Hereinafter, embodiments of the invention will be described in detail with reference to the accompanying drawings.

FIG. 6 is a perspective view showing a magnetic disk device according to the present invention. A front panel 1 is provided on the front side of the device, and a cooling fan 2 is provided inside this front panel 1. The cooling fan 2 is used to cool each unit disposed within the device housing 3, and is a laminar flow type fan with high blowing pressure.

A disk enclosure 4 is arranged on one side near the rear of the cooling fan 2, for example on the left side inside the housing 3 in FIG. This disk enclosure 4 has a plurality of stacked magnetic disks as recording media inside its housing, and is further provided with a magnetic head that seeks the medium surface of the magnetic disks to write or read data.
The magnetic disk is laid down horizontally so that its medium surface is approximately vertical, and a spindle motor for driving the magnetic disk, a voice coil motor for driving the magnetic head, etc. are provided outside the housing to protrude from the bottom side of the housing. The heat generating portion is directed toward one side of the device housing 3 so that the cooling air from the cooling fan 2 can pass through the bottom side.

The other side adjacent to the disk enclosure 4 and near the rear of the cooling fan 12, for example, the sixth
In the figure, a control circuit section 15 is arranged on the right side inside the casing 3. This control circuit section 15
is used to set the position of the magnetic head, select any one of a plurality of magnetic heads, or issue write and read commands. A power supply unit 16 is disposed within the device housing 3 at the rear of the device. In addition,
In FIG. 6, reference numeral 17 is an interface section for inputting and outputting signals with other devices.

Next, referring to FIGS. 6, 7, 8, and 9, a structure for mounting the disk enclosure substantially vertically will be specifically described.

FIG. 7 is an explanatory diagram of main parts showing the mounting structure of the disk enclosure according to the present invention.

The disk enclosure 4 is attached to the floor surface 25 at a predetermined position of the magnetic disk device housing.
At the four corners of the bottom of the disk enclosure 4 (see Figure 8), there are elastic cushioning materials 2 such as anti-vibration rubber.
2, 22... are attached, and this elastic cushioning material 2
A support frame 39 is sandwiched between the bottoms of 2 and 22,
As shown in FIG. 9, the support rail 3 has a U-shaped cross section.
0 is attached. The support frame 39
As shown in FIG. 7, the raised pieces 31, 31 are raised at appropriate heights along the side surfaces of the disk enclosure 4, and the upper ends of these raised pieces 31, 31 are bent approximately horizontally, as shown in FIG. A mounting screw 32 is screwed into the. This mounting screw 32
The above-mentioned rising piece 3 is attached to the mounting frame 35 described later.
This is for attaching the disk enclosure 4 into the magnetic disk device by fixing the disk enclosures 1 and 31.

A mounting frame 3 is located around the mounting position of the disk enclosure 4 in the magnetic disk device.
5 and 35 are erected on the floor 25 by welding or the like.
This mounting frame 35 is for mounting the disk enclosure 4 at a predetermined position within the magnetic disk device, and is provided along the rising pieces 31, 31 at locations corresponding to the rising pieces 31, 31 of the supporting frame 39. They are raised to approximately the same height, and their upper ends are bent approximately horizontally.

In addition, in FIGS. 8 and 9, the reference numeral 36 is a spindle motor for driving the magnetic disk.
Reference numeral 37 is a rotary voice coil motor section for seeking the magnetic head, and reference numeral 12 is a wing nut for fixing the pivot section of the rotary voice coil motor section 37.

In order to attach such a disk enclosure 4 to the floor surface 25 inside the magnetic disk device, the seventh
As shown in the figure, first, the disk enclosure 4 is placed on the floor surface 25 between mounting frames 35, 35, . . . erected around the mounting position of the disk enclosure 4. At this time, the rising pieces 31, 31... of the support frame 39 of the disk enclosure 4 are positioned so as to face each of the mounting frames 35, 35..., and the upper ends of the rising pieces 31, 31... The axes of the mounting screws 32, 32 screwed into the mounting frames 35, 35, . Next, the above mounting screws 32, 32
... by rotating the mounting frames 35, 35...
...screw into the screw hole of disk enclosure 4.
The mounting frames 35, 35 stand up from the floor surface 25 with the rising pieces 31, 31... of the support frame 39.
It is fixed to... In this way, the disk enclosure 4 is attached to a predetermined position within the magnetic disk device so that it can be buffered via the elastic cushioning materials 22, 22, . . . .

In this way, in the magnetic disk device in which the disk enclosure 4, the control circuit section 15, the power supply unit 16, and other units are arranged,
When the cooling fan 12 is driven, the cooling air is
It flows into the inside of the front panel 1 from the front side as shown by arrow C in FIG. As shown, the water flows along the top and side surfaces of the disk enclosure 4 and the control circuit section 15 toward the rear of the device. At this time, since the heat generating part on the bottom side of the disk enclosure 4 is directed toward one side of the device housing 3, when the cooling air flows in the direction of arrow E, the heat generating part is cooled. .

That is, as shown in FIG.
Cooling air is taken in as shown by arrow C,
It is sent in the direction of arrow D. The cooling air sent out in the direction of arrow D is dispersed and flows as shown by arrow E to cool the spindle motor 36 and rotary voice coil motor 37, which generate a large amount of heat.

Furthermore, the cables 7, 8, 8' are as before,
Covering the mounting screws 32, the cables 7, 8,
8' can be arranged so that it does not pass through the upper part of the mounting screw 32.

In addition, since the bottom side of the disk enclosure 4 faces one side of the device housing 3, when the housing 3 is opened, the voice coil motor pivot part on the bottom side can be fixed by the wing nut 12. It's easy to do.

(5) Effects of the Invention Since the present invention is configured as described above, it is possible to cool the heat generating parts such as the spindle motor for driving the magnetic disk and the rotary voice coil motor provided on the bottom side of the disk enclosure 4. fan 12
Since the heat generating part of the disk enclosure faces the side of the device housing, the effect of heat on the printed circuit board etc. can be improved. can be reduced. Therefore, it is possible to prevent the heat generating portion of the disk enclosure 4 from overheating, thereby reducing the cause of failure of the device. Further, according to the present invention, the cables 7, 8', 8 are attached to the mounting screws 3
2. Can be placed without occupying the space above.

Further, since the present invention is configured as described above, the mounting frame 35, which is erected from the floor surface 25 of the device,
The rising piece 3 of the support frame 39 stands up on the peripheral side of the disk enclosure 4 at 35...
1, 31... can be fixed at a position higher than the floor 25, and the workability of mounting and mounting the disk enclosure 4 can be improved even in a high-density magnetic disk device. I can do it.

In addition, since the bottom side of the disk enclosure faces one side of the device housing 3, opening the housing 3 allows the pivot of the rotary voice coil motor section that seeks the magnetic head provided on the bottom side. part can be easily exposed.
Therefore, it is possible to easily fix the pivot portion during transportation of the magnetic disk device, and the maintainability of this portion can be improved.

[Brief explanation of drawings]

FIG. 1 is an internal layout diagram showing a conventional magnetic disk device, FIG. 2 is a diagram for explaining the state of a cooling fan, FIGS. 3 and 4 are diagrams for explaining the structure of a disk enclosure, FIG. 5 is a diagram for explaining the mounting structure of a conventional disk enclosure, FIG. 6 is an internal layout diagram showing a magnetic disk device according to the present invention, and FIGS. 7, 8, and 9 are diagrams according to the present invention. FIG. 3 is a diagram for explaining the mounting structure of the disk enclosure. In the drawing, 1 is a front panel, 2 is a cooling fan, 3 is a magnetic disk housing, 4 is a disk enclosure, 7, 8, 8' are cables, 9, 3
6 is a spindle motor, 10 and 37 are voice coil motor sections, 22 is an elastic buffer, 30 is a support rail, 31 is a rising piece of a support frame, 32 is a mounting screw, and 35 is a mounting frame.

Claims (1)

[Scope of Claims] 1. A disk enclosure is installed in which a magnetic disk medium and a magnetic head are sealed inside a housing, and a spindle motor for driving the magnetic disk medium and a voice coil motor for driving the magnetic head are respectively fixed to the housing. and a cooling fan on the front surface, wherein a spindle motor and a voice coil motor in the disk enclosure are arranged to protrude from one side of the housing, and the disk enclosure is connected to the magnetic disk device. A magnetic disk medium is mounted so as to be perpendicular to the bottom surface of the housing, and a cooling air passage is formed by the cooling fan between the disk enclosure and the inner wall of the device housing, and the spindle motor and a protruding portion of the voice coil motor from the housing is located within the air passage.