JP2003100070A - Disk device with breathing filter assembly mounted thereon and the breathing filter assembly mountable on the device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk device mounted with a breathing filter assembly capable of maintaining space-saving in the device without the need for making an exclusive hole or the like on a cover and a base in order that the breathing filter assembly breathes external air from the outside of the device and to provide the breathing filter assembly to be mounted on the device. SOLUTION: The breathing filter assembly 6 is fitted to a magnetic disk device comprising; a flexible printed circuit board 4 including a connector 3 for exchanging an electric signal with the outside; and a device base 14 to which the flexible printed circuit board 4 is fitted. The breathing filter assembly 6 that gives no interference to the connector 3 projected from the flexible printed circuit board 4 and is fitted between the flexible printed circuit board 4 and the base 14 in a manner of vertically being clamped, is provided in the magnetic disk device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device equipped with a respiratory filter assembly and a respiratory filter assembly attachable to the disk device.

[0002]

2. Description of the Related Art There is a need for a breathing filter assembly for a magnetic disk drive which is compact and has a simple structure and which can adsorb corrosive gas for a long time and remove it from the inside of the drive. As one of the solutions, Japanese Patent Laid-Open No. 7-25426
Prior art as disclosed in No. 7 has been developed.

The technique disclosed in Japanese Patent Laid-Open No. 7-254267 is a breathing apparatus for a magnetic disk device including a base (base) of the magnetic disk device and a cover fixed to the base (base) and having a vent hole. A filter assembly, which has a ventilation inlet communicating with the ventilation hole and a ventilation outlet provided opposite to the ventilation inlet communicating with the inside of the magnetic disk device, and a casing fixed to the inner surface of the cover, A first filter, which is housed in the casing adjacent to the ventilation inlet and is made up of a plurality of fibers arranged in a direction substantially parallel to the air flow direction from the ventilation inlet to the ventilation outlet, and blocks the ventilation outlet. A second filter adhered to the casing, and an activated carbon layer housed inside the casing between the first filter and the second filter. It relates breathing filter assembly of the magnetic disk apparatus characterized by a.

However, in the above-mentioned prior art, in order for the breathing filter assembly to exchange the outside air with the outside of the apparatus, it was necessary to make a dedicated hole in the cover or the base.

A disk device such as a magnetic disk device is required to be downsized, and it is necessary to take measures such as reducing the number of parts inside the device in order to save space inside the device. In a disk device such as a magnetic disk device having a size of 1.8 inches or less, which is extremely small in size and in which it is difficult to secure an internal space, it is very difficult to incorporate the breathing filter assembly having the large-scale configuration as in the above-mentioned prior art into the device. It's getting harder.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and in order for the breathing filter assembly to exchange outside air with the outside of the device, a dedicated hole is provided in the cover or the base. The present invention relates to a breathing filter assembly capable of maintaining space saving inside a device without opening a breathing filter assembly, and a breathing filter assembly that can be attached to a disk device equipped with such a breathing filter assembly and the device. The purpose is to do.

[0007]

DISCLOSURE OF THE INVENTION A disk device according to the present invention is arranged in a disk device base and is provided with a connector for exchanging electrical signals with the outside, a flexible printed circuit board, the flexible printed circuit board and the disk device. A breathing filter assembly disposed between the bases so as to be sandwiched between the flexible printed circuit board and the disk base and attached to the disk device base without interfering with the connector. To do.

With such a disk device, it is possible to keep the inside of the device clean while maintaining space saving of the disk device.

Further, the disk device of the present invention has a disk device base having an opening, a flexible printed circuit board arranged in the disk device base, and a flexible printed circuit board attached to the flexible printed circuit board, and an external electrical signal. A connector for exchanging data between the flexible printed circuit board and the disk device base, the connector being attached to the flexible printed circuit board so as to project from the disk device base opening to the outside of the base. In addition, the connector has a cavity that does not interfere with the connector when the connector is projectingly arranged to the outside of the disk device base, and the opening of the disk device base is shared as the only contact part in contact with the outside air. It is characterized by comprising a respiratory filter assembly attached.

With such a disk device, since the breathing filter exchanges outside air with the outside of the device, it is not necessary to make a dedicated hole in the cover or the base, and the space saving of the disk device is maintained. It is possible to keep the inside of the device clean.

Further, in the breathing filter assembly of the present invention, an opening is provided in the base, and a breathing apparatus which can be attached to a disc device arranged so as to project a connector for exchanging an electric signal with the outside from the opening. The filter assembly is characterized in that a cavity having substantially the same shape as the base opening is formed near the center.

With such a breathing filter assembly, it is possible to save the space of the disk device equipped with this breathing filter assembly.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view for explaining the overall structure of a disk device according to an embodiment of the present invention. In the embodiments of the present invention, the contents will be described by taking a magnetic disk device as an example of the disk device. Needless to say, the present invention can be applied to other disk devices such as an optical disk device and a magneto-optical disk device.

FIG. 2 is a sectional view for explaining the details of the disk device according to the embodiment of the present invention and the breathing filter which can be attached to the device.

First, a magnetic disk device according to an embodiment of the present invention will be described with reference to FIG. The magnetic disk device of the present invention is equipped with a medium 1 having a magnetic layer formed on its surface and rotated by a spindle motor at a predetermined rotation speed. Tracks (called cylinders when there are a plurality of media) are concentrically formed on the medium 1, the track is divided into a plurality of sectors, and information is recorded / reproduced on / from the sectors.

In the magnetic disk device, the magnetized state of the magnetic layer on the medium 1 is read by the head 12 provided at the tip of the carriage 7 or the magnetized state of the magnetic layer on the medium 1 is changed by the head 12. Writing is performed by.

In the magnetic disk device, a head retracting member called a lamp 2 is provided on the device base 14 located on the outer peripheral portion of the medium 1, and when the magnetic disk device is powered off or the medium 1 is kept for a predetermined time. If no information is recorded / reproduced, the head leaves the medium 1 and stops operating on the lamp 2.

Further, a top cover 8 is attached to the magnetic disk device so that the upper portion of the device base 14 is sandwiched by a gasket (not shown) so that dust is prevented from entering the inside of the device from the outside. ing.

The conventional magnetic disk device has a device base 14
Alternatively, a breathing hole is provided in the top cover 8, and a breathing filter assembly is often attached to the inside of the device base 14 so as to cover the breathing hole, and the air pressure with the outside of the device is adjusted through this breathing hole.

In the magnetic disk device, a control circuit for controlling a mechanical section in the device is mounted outside the device base 14 on an external printed circuit board (not shown), and is mounted outside the device base 14.

Further, the magnetic disk device has a device base 14
In some cases, a flexible printed circuit board 4 is also provided inside, and a specific IC circuit such as a head IC 10 that amplifies an output signal of the head 12 may be mounted on the flexible printed circuit board 4. A connector 3 for exchanging electrical signals with an external printed circuit board is attached to the connector 4.

The connector 3 is attached by fixing the flexible printed circuit board 4 inside the device casing 14 so that the terminal 31 thereof projects to the outside through the opening 5 provided in the device base 14. Is.

Next, the breathing filter assembly 6 according to the embodiment of the present invention will be described.

In the magnetic disk device according to the embodiment of the present invention, a breathing filter assembly 6 is provided inside the device base 14. The breathing filter assembly 6 has a cubic shape and has a so-called annular shape (or donut shape) having a hollow portion 66 near the center thereof. In the breathing filter assembly 6, one surface with the cavity 66 is adhered to the flexible printed circuit board 4 with an adhesive 11 such as a double-sided tape, and the other surface with the cavity 66 sandwiches the gasket 9 and the device is provided. It is screwed to the base 14. That is, the breathing filter assembly 6 is mounted so as to be sandwiched between the flexible printed board 4 and the device base 14.

At this time, the opening 5 provided on the apparatus base 14 for arranging the connector 3 so as to project to the outside.
And the cavity 66 of the respiratory filter assembly 6 is formed in substantially the same shape. The terminal 31 of the connector 3 is adapted to project to the outside of the device base 14 through the cavity 66 of the respiratory filter assembly 6 and further through the opening 5 of the device base 14. At this time, the breathing filter assembly 6 is attached so that the connector 3 does not interfere with the projection of the connector 3 to the outside of the device base 14.
That is, the respiratory filter assembly 6 has a structure having a cavity 66 near the center thereof where the connector 3 does not interfere.

Further, this respiratory filter assembly 6
Is attached so that the opening 5 of the device base 14 is the only part that comes into contact with the outside air. In other words, the opening 5 of the device base 14 also serves as the breathing hole 61 of the breathing filter assembly 6. Or, it has a shared structure. That is, the cavity 6 of the respiratory filter assembly 6
6 has a breathing hole 61 on the inner side wall, and has a structure capable of contacting with the outside air without making a hole in the device base 14 or the top cover 8.

Next, the detailed structure of the respiratory filter assembly 6 according to the embodiment of the present invention will be described with reference to FIGS. 2, 3, and 4.

The breathing filter assembly 6 according to the embodiment of the present invention has a first layer 67 that secures an outside air passage and a second layer that is filled with activated carbon so as to retain dust and the like that enter the inside of the apparatus base 14 from the outside. It is composed of two layers 68.

A breathing hole 61 is provided in the inner wall of the cavity 66 in the first layer 67, and a long hole (channel) 64 is formed which has an effect of preventing the entry of dust and the like when the outside air passes inside. The end of the slot 64, that is, the outlet, is in contact with the second layer 68.

It is known that forming the elongated hole (channel) 64 as thin and long as possible has a great effect on preventing dust from entering, and in addition to the spiral shape as in the present embodiment. Alternatively, it may be formed in a labyrinth shape.

The second layer 68 is composed of an activated carbon layer 64 filled with activated carbon in order to collect dust or the like that would pass through the first layer 67 and enter the inside of the apparatus base 14. There is. Further, the second layer 68 has the above-mentioned first layer.
The ventilation hole 63 is formed in a portion in contact with the end of the layer 67, and forms a passage for guiding the outside air to the activated carbon layer 64.
The outer peripheral surface of the activated carbon layer 64 formed thereon serves as a vent hole 65 for the device base 14.

In this embodiment, the breathing hole 61 of the first layer 67 is provided.
Are arranged so as to face the cavity 66 of the respiratory filter assembly 6, and the only portion where the opening 5 of the device base 14 comes into contact with outside air, that is, the opening 5 of the device base 14 is the respiratory filter assembly 6. The breathing hole 61 is also used or shared.

With this structure, there is a breathing hole 61 on the inner wall of the cavity 66 of the breathing filter assembly 6,
The structure is such that the device base 14 and the top cover 8 can be brought into contact with the outside air without making holes.

In this embodiment, the case where the breathing filter assembly 6 is attached to the magnetic disk device has been described as an example, but the present invention is not limited to this. The present invention can be applied to other disk devices such as an optical disk device and a magneto-optical disk device.

[0036]

As described above in detail, according to the present invention, since the breathing filter assembly exchanges the outside air with the outside of the device, it is possible to save the inside of the device without making a dedicated hole in the cover or the base. It is possible to provide a respiratory filter assembly that can maintain space,
Further, it becomes possible to provide a disk device equipped with such a respiratory filter assembly and a respiratory filter assembly attachable to the device.

[Brief description of drawings]

FIG. 1 is a front view illustrating the structure of a magnetic disk device according to an embodiment of the invention.

FIG. 2 is a cross-sectional view illustrating the arrangement of a respiratory filter assembly mounted on the magnetic disk device according to the embodiment of the invention.

FIG. 3 is a diagram illustrating a first layer and a ventilation path of a respiratory filter assembly according to an embodiment of the present invention.

FIG. 4 is a diagram illustrating an activated carbon layer that is a second layer of the respiratory filter assembly according to the embodiment of the present invention.

[Explanation of symbols]

1 ... Media 2 ... lamp 3 ... Connector 31: Connector terminal 4 ......... Flexible Printed Circuit Board (FPC) 5 ………… Device base opening 6 ... Breathing filter assembly 61 ... Breathing hole 62 …… Channel 63 ... Vent surface 64: Activated carbon layer 65 ... Vent 66 ... Cavity 67 ... the first layer 68 ... second layer 7 ... Carriage 8 ... Top cover 9 ... Gasket 10 ... Head IC (IC circuit) 11 ... Adhesive 12 ... head 14 ... Device base

Claims (10)

[Claims] 1. A flexible printed circuit board, which is arranged in a disk device base and is provided with a connector for exchanging electrical signals with the outside, and is arranged between the flexible printed circuit board and the disk device base. A disk device comprising a substrate and a respiratory filter assembly that is attached to the disk device base so as to be sandwiched between the disk base and the connector without interfering with the connector. 2. The disk device according to claim 1, wherein the breathing filter assembly has a hollow portion near the central portion where the connector does not interfere. 3. The disk device according to claim 1, wherein the breathing filter assembly has an annular shape having a hollow portion near the central portion that does not interfere with the connector. 4. The disk device base has an opening,
The connector is disposed so as to project from the opening of the disk device base to the outside of the base, and the breathing filter assembly is attached only by the base opening so as to come into contact with outside air outside the base. The disk device according to claim 1, which is characterized in that. 5. The breathing filter assembly comprises: a first layer having a breathing hole facing the base opening, a slot through which outside air passes, and an outlet of the slot. The disk device according to claim 4, further comprising a second layer filled with the activated carbon layer. 6. A disk device base having an opening, a flexible printed circuit board arranged in the disk device base, and a connector mounted on the flexible printed circuit board for exchanging electrical signals with the outside. A connector mounted on the flexible printed circuit board so as to project from the disk device base opening to the outside of the base; and the connector is disposed between the flexible printed circuit board and the disk device base, and the connector is the disk. A breathing filter assembly mounted so as to have a cavity in which the connector does not interfere when it is arranged so as to project outside the device base, and to share the opening of the disk device base as the only contact part in contact with the outside air; Disk device consisting of. 7. The disk device according to claim 6, wherein the breathing filter assembly has an annular shape having a hollow portion near the central portion that does not interfere with the connector. 8. The breathing filter assembly comprises: a first layer having a breathing hole facing the base opening, and a long hole through which outside air passes from the breathing hole; and an outlet of the long hole. 7. The disk device according to claim 6, further comprising a second layer filled with an activated carbon layer. 9. A respiratory filter assembly attachable to a disk device, wherein an opening is provided in a base and a connector for exchanging an electrical signal with the outside is projected from the opening, the respiratory filter assembly comprising: The filter assembly is characterized in that a cavity having substantially the same shape as that of the base opening is formed in the vicinity of the center of the filter assembly. 10. The breathing filter assembly comprises: a first layer having a breathing hole facing the base opening, and a long hole through which outside air passes through the breathing hole; and an outlet of the long hole. 10. The respiratory filter assembly of claim 9 having a second layer filled with an activated carbon layer.