JPH0628839A - Information storage device - Google Patents

Abstract

PURPOSE:To provide an information storage device capable of attaining a high density packaging and efficient cooling. CONSTITUTION:In the information storage device equipped with an information recording medium 2, mechansim part 1 which houses inside a head 3 operating at least the reading of data to the pertinent information recording medium 2, control circuit part 5 provided so as to be adjacent to the pertinent mechanism part 1 controlling the mechansim part 1 and fan 6 cool the mechansim part 1, the control circuit part 5 is housed in the inside part. Also a case 4 with a high heat conductivity, whose face is in contact with the outside of the mechansim part 1, is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording medium, a mechanism portion internally accommodating a head for reading at least data from the information recording medium, and a mechanism portion provided adjacent to the mechanism portion. The present invention relates to an information storage device including a control circuit unit that controls a unit and a fan that cools the mechanism unit.

In recent years, a large amount of information storage devices such as magnetic disk devices have been used in electronic computer systems, the proportion of which in the computer room has been increasing, and there is a great demand to reduce the floor area of the information storage devices. For this reason, for example, in a magnetic disk device, downsizing of a drive,
The mounting density is increasing. Therefore, an efficient cooling method has been demanded.

[0003]

2. Description of the Related Art FIG. 6 is a perspective view of a conventional magnetic disk device. In the figure, 1 is a magnetic disk inside, a head for reading / writing data from / to this magnetic disk, an accessor for moving this head to a desired track of the magnetic disk, a spindle motor for driving the magnetic disk to rotate at high speed, etc. Is an enclosure provided with. The enclosure 21 is generally made by aluminum die casting or the like having a high heat conductivity, and has fins 22 as a heat dissipation mechanism formed on the outer surface thereof.

Reference numeral 23 is a control circuit board including a spindle motor drive circuit, a positioning circuit, a read / write circuit, an interface control circuit and the like.

[0005]

However, in the case of the magnetic disk device having the above-mentioned structure, the surface area, that is, the heat dissipation area becomes smaller as the size of the component becomes smaller in order to realize high-density mounting. Also, the cooling mechanism is downsized, so that the cooling capacity is also reduced. Therefore, it is difficult to achieve a mounting arrangement capable of cooling the components evenly and efficiently in order to achieve small size and high density mounting.

Further, in order to perform sufficient cooling, there is a restriction that the mounting arrangement is determined so that the air is directly blown to the components in consideration of the cooling air passage, which impedes high-density mounting. . The present invention has been made in view of the above problems, and an object thereof is to provide an information storage device capable of high-density mounting and capable of obtaining efficient cooling.

[0007]

FIG. 1 shows the principle of the invention according to claim 1. In the figure, 1 is an information recording medium 2,
This is a mechanical unit that accommodates therein at least a head 3 that reads data from the information recording medium 2.

Reference numeral 4 designates a case having a high thermal conductivity which accommodates the control circuit portion 5 inside and is in surface contact with the outside of the mechanism portion 1. 6
Is a fan for cooling the mechanical unit 1.

Next, the invention according to claim 2 is such that the case 4 according to claim 1 is made of metal. Next, claim 3
In the invention described above, the case 4 described in claim 1 or 2 is filled with a heat conductor.

[0010]

In the information storage device according to the present invention, the control circuit section 5 is provided in the case 4 having a high thermal conductivity, and the case 4 is in surface contact with the outside of the mechanism section 1. The heat generated in 5 is transferred to the mechanism unit 1 via the case 4, and is radiated by the mechanism unit 1 cooled by the fan 6.

If fins are formed outside the mechanism section 1 as a heat dissipation mechanism, the heat dissipation effect can be further enhanced. In the information storage device according to the second aspect, since the case 4 is made of metal, the heat transfer characteristic from the case 4 to the mechanical section 1 becomes good.

In the information storage device according to the third aspect of the present invention, by filling the case 4 with the heat conductor, the heat transfer characteristic to the mechanism portion 1 is further improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the drawings. 2 is a perspective view for explaining an embodiment of the present invention, FIG. 3 is an enlarged perspective view of the case in FIG. 1, FIG. 4 is a sectional configuration view of the case in FIG. 3, and FIG. 5 is a cross section of the case in another embodiment. It is a block diagram.

In FIG. 2, reference numeral 11 denotes a magnetic disk, a head for reading / writing data from / to the magnetic disk, an accessor for moving the head to a desired track of the magnetic disk, and a high speed rotational drive for the magnetic disk. It is an enclosure as a mechanical unit provided with a spindle motor and the like. This enclosure 11 is
Generally made of aluminum with high heat conductivity,
Fins 12 are formed on the outer surface as a heat dissipation mechanism.

13 is a spindle motor drive circuit,
It is a case that accommodates a control circuit board (described later) including a positioning circuit, a read / write circuit, an interface control circuit, and the like.

Next, the case 13 will be described in detail with reference to FIGS. 3 and 4. In these figures, reference numeral 14 denotes a metal-made substantially rectangular base plate as a heat radiation surface that comes into surface contact with the outer surface of the enclosure 11. Attachment holes 14a are formed at four corners of the base plate 14.

Then, as shown in FIG. 2, the base plate 14 of the case 13 is in surface contact with the enclosure 11 by using the four screws 15 which are inserted through the holes 14a and screwed into the screw holes of the enclosure 11.

Returning to FIGS. 3 and 4, reference numeral 16 is a control circuit board disposed on the base plate 14. 1
Reference numeral 7 is a cover on the base plate 14 that covers the control circuit board 16.

The wind of a fan (cooling mechanism) not shown flows in the direction of the arrow in FIG. Next, the operation of the above configuration will be described. The heat generated in the integrated circuit 17 arranged on the control circuit board 16 is transferred to the enclosure 11 via the base plate 14 of the case 13. The heat transferred to the enclosure 11 is radiated from the outer surface of the enclosure 11 cooled by the fan.

According to the above configuration, the control circuit board 16 can be efficiently cooled without directly blowing air on the control circuit board 16. Therefore, there is no restriction that the mounting arrangement of components is determined in consideration of the cooling air flow path, and high-density mounting of the magnetic disk device becomes possible.

The present invention is not limited to the above embodiment. For example, as shown in FIG. 5, the case 13 ′ includes a base plate 14, a cover 17, and a control circuit board 16 provided on the cover 17 side, and the inside of the cover 17 is a heat conductor (for example, liquid, It may be filled with grease). With such a configuration, the heat generated from the control circuit board 16 can be efficiently supplied to the base plate 14,
It is transmitted to the enclosure 11.

Further, in the above embodiment, the magnetic disk device has been described, but the invention is not limited to this, and needless to say, an optical disk device, a magnetic tape device or the like may be used.

[0023]

As described above, according to the present invention, since the control circuit is housed in the case and the case is brought into surface contact with the mechanism portion, high density mounting is possible and efficient cooling is obtained. The information storage device can be realized.

[Brief description of drawings]

FIG. 1 is a principle diagram of the invention according to claim 1;

FIG. 2 is a perspective view illustrating an embodiment of the present invention.

FIG. 3 is an enlarged perspective view of a case in FIG.

4 is a cross-sectional configuration diagram of the case in FIG.

FIG. 5 is a cross-sectional configuration diagram of a case of another embodiment.

FIG. 6 is a perspective view of a conventional magnetic disk device.

[Explanation of symbols]

 1 Mechanism 2 Information Storage Medium 3 Head 4 Case 5 Control Circuit 6 Fan 7 Heat Dissipation Structure

Claims (3)

[Claims] 1. A mechanism section (1) containing an information recording medium (2) and a head (3) for reading at least data from the information recording medium (2), and the mechanism section (1). In the information storage device, which is provided adjacent to the control circuit unit (5) for controlling the mechanism unit (1) and a fan for cooling the mechanism unit (1), the control circuit unit (5) (4) having a high thermal conductivity that accommodates the inside of the mechanism part and is in surface contact with the outside of the mechanism part (1).
An information storage device comprising: 2. The information storage device according to claim 1, wherein the case is made of metal. 3. The information storage device according to claim 1, wherein the case is filled with a heat conductor.