JP2769594B2 - Cooling structure and dustproof case for medium read / write device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical means for air-cooling a recording medium such as a flexible disk read / write device and a magneto-optical disk read / write device without invading dust into a read / write device. Note that the medium read / write device mentioned here is used to include both a device that can perform both reading and writing of a recording medium and a device that performs only one of reading and writing.

[0002]

2. Description of the Related Art A medium read / write device must prevent dust from entering a read / write portion. In particular, in a read / write device for an optical disk or a magneto-optical disk, dust that has entered into the device adheres to an optical lens or the like provided in the read / write portion, so that normal reading / writing cannot be performed. The intrusion of dust into the medium storage section must be strictly prevented.
For this reason, a shutter is provided at the medium insertion opening of the optical disk or magneto-optical disk read / write device, and this shutter closes the medium insertion opening except when loading / unloading the medium to prevent dust from entering the bezel. I have.

On the other hand, in a high-density electric device, the amount of heat generated in a unit space at the time of operation becomes large, and there is a problem that the function of an electric device or an electronic element is deteriorated due to a rise in temperature. For this reason, consideration must be given to suppressing the heat generation of the device, and a cooling means for quickly dissipating the generated heat is required. In a relatively small office equipment such as a medium reading / writing device, an air cooling structure is used as a cooling structure, and a rear blow-out type cooling fan is provided on a rear surface (rear surface) of the device, and a suction air flow flowing to the cooling fan is used. A structure for cooling the inside of the device is employed.

Therefore, in an office computer equipped with a magneto-optical disk read / write device 2 as shown in FIG. 11, the medium insertion opening 21 of the read / write device is mounted facing the opening 29 provided in the front panel 24 of the device housing. A structure is employed in which a cooling fan 25 of a blowout type is provided behind the cooling fan and the medium read / write device 2 is cooled by the suction airflow.

[0005]

Normally, a medium read / write device is manufactured as one completed electric unit.
The outer box is not airtight. In a magneto-optical disk read / write device or the like, the shutter 31 is provided in the medium insertion port 21 as described above. However, it is difficult to completely seal the medium insertion port 21 with the shutter 31.
Although small, gaps often remain. Therefore, when the medium read / write device 2 is cooled by the cooling fan 25, the portion protruding behind the front panel 24 of the medium read / write device 2 is placed in a negative pressure environment, and passes from the front of the device to the bezel 32 through the gap of the shutter 31. Then, an air flow 26 flows from the bezel 32 to the drive unit 33 and flows from the drive unit 33 to the outside of the read / write device 2. This air flow causes dust to enter the bezel. In particular, in the magneto-optical disk read / write device delicate to dust, Due to the adhesion of the dust to the read / write section, there is a problem that malfunction or read / write failure occurs. In order to avoid this problem, a structure in which a shield plate 35 is provided between the medium read / write device 2 and the cooling fan 25 to block the air flow 26 passing through the medium read / write device 2 has been tried. The fact is that it is not. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to obtain technical means for achieving both dust-proofing and air-cooling of a medium read / write device such as a magneto-optical disk read / write device which does not like the entry of dust.

[0006]

According to the cooling structure of the medium reading / writing apparatus according to the present invention, the medium insertion opening 21 is connected to the front panel 24.
The medium read / write device 2 is mounted in communication with the opening 29 provided in the medium, and the cooling structure of the medium read / write device provided with the rear blow-out type cooling fan 25 behind the medium read / write device 2 projects rearward from the front panel 24 of the medium read / write device 2. 1 is a rectangular cylindrical dustproof case 1 in which one of the small faces is closed by a back plate 8.
The rectangular cylindrical dustproof case is attached to the back surface of the front panel 24 through the elastic sealing material 13 with its opening edge 15 in close contact with the outer surface of the dustproof case 1. The medium reading / writing device is cooled by a suction airflow of the cooling fan flowing through the medium.

[0007] The cooling structure of the medium read / write device according to the present invention, wherein the electrical connection cable 3 of the medium read / write device,
4 is pulled out from the opposite side of the medium insertion port 21 through the connectors 5 and 6, the dustproof case 1 is provided with a back plate 8 having openings 16 and 17 for connector insertion, and is connected to the medium read / write device 2. Connect the connectors 5 and 6 to the back plate 8
It can be connected to the medium read / write device 2 via a resilient sealing material 18 interposed in a compressed state between the connector and the outer peripheral surface of the connector or a flange 28 provided on the connector.

The dustproof case of the medium read / write device according to the present invention includes a case body 12 in the shape of a bottomed rectangular tube having one small face closed by a back plate 8.
6 and 17, and the connector insertion openings 16 and 17 have openings 1 having dimensions smaller than the outer dimensions of the connectors 5 and 6 to be inserted.
A resilient sealing material 18 having 9 and 20 is attached to the back plate 8, and a resilient front edge sealing material 13 is provided on the peripheral edge 15 of the opening-side small face of the case body 12. It is characterized in that it is mounted with the front end edge 14 protruding forward from the peripheral edge 15 of the case body.

[0009]

According to the above cooling structure, the medium reading / writing device 2
The portion behind the front panel 24 is cut off from the suction airflow (negative pressure environment) 26 of the cooling fan 25 by the dustproof case 1, and no airflow flows from inside the medium read / write device 2 to the rear. Therefore, there is no air flow that enters the medium read / write device 2 through the gap between the shutters 31, and dust can be prevented from entering the medium read / write device 2.

[0010] The dustproof case 1 has a peripheral edge 1 of the opening side small surface.
5 is a front panel 24 through a resilient leading edge seal 13.
Since there is no air gap between the dust-proof case 1 and the front panel 24, there is no gap between the dust-proof case 1 and the front panel 24. Further, the gaps between the connector insertion ports 16 and 17 provided in the back plate 8 of the dustproof case 1 and the connectors 5 and 6 are sealed by the resilient sealing material 18 compressed between the two when the connectors are connected.
There is no airflow through this section.

That is, since the air in the medium reading / writing device cannot flow out to the outside, even if it is heated by the heat, it only circulates inside, and there is no air flow entering the reading / writing device from outside. Intrusion of dust from the outside can be almost completely avoided. Further, heat generated in the read / write device is transmitted to the inner wall surface of the dustproof case 1 by the above-described internal circulation flow, and is carried away by the suction airflow of the cooling fan 25 flowing along the outer wall surface of the dustproof case 1. 2 is also possible.

The dustproof case having the above structure is mounted with the front edge sealing member 13 pressed against the back surface of the front panel 24 while covering the medium read / write device 2. By inserting 6, the cooling structure having the above-described structure is realized, so that it is possible to easily assemble an electric device having the cooling structure of the present invention.

[0013]

Next, an embodiment shown in the drawings will be described. FIGS. 1 to 6 show a first embodiment of the present invention.
And 3 are perspective views of the dustproof case as viewed from the front and the rear. FIG. 2 shows a medium read / write device (magneto-optical disk read / write device) 2 inserted into a dustproof case 1. FIG. 3 shows a power supply cable 3 and a signal cable 4 connected behind the medium read / write device. Connectors 5, 6
It is shown. The dustproof case 1 is formed by folding and bonding a thin sheet of polyvinyl chloride or polyamide into a folded box shape. It is what it was. The medium reading / writing device 2 is provided with a mounting screw hole 9 on its side, and a screw insertion hole 11 is provided at a position corresponding to the screw hole 9 on the side of the dustproof case.

A band-shaped front edge sealing material 13 made of a resilient material such as foamed polyurethane is wound around the periphery of the opening side small surface of the case body 12 in a wound state.
The front edge 14 of the front edge sealing material 13 is
Is mounted so as to protrude forward from the peripheral edge 15 of the opening-side fore-face.

As shown in FIG. 3, connector insertion ports 16 and 17 having dimensions larger than the outer dimensions of the connectors 5 and 6 are opened in the back plate 8 of the main body case. Then, the leading edge sealing material 1 is so covered as to cover the connector insertion openings 16 and 17.
Sheet-shaped resilient sealing material 1 made of the same material as
8 is attached to the outer surfaces of the case bodies 12 and 8 by being attached thereto. The connector insertion port 16 of the resilient sealing material 18
In the portion corresponding to 17, openings 19 and 20 having opening dimensions smaller than the outer dimensions of the connectors 5 and 6 are provided.

The medium reading / writing device 2 has its medium insertion port 21
Is fixed in the dustproof case 1 having the above structure with screws 23 to a bracket 22 provided on a frame of an electric device on which the medium read / write device 2 is mounted. In FIG. 4, the bracket 22 is illustrated as being separated from the side of the medium reading / writing device for easy understanding, but the bracket 22 is actually located immediately near the side of the medium reading / writing device 2. Bracket 22 and screw insertion hole 11 for dustproof case
When the screw 23 is screwed into the screw hole 9 of the medium reading and writing apparatus and fixed, the bracket 22 is slightly inwardly sunk by the tightening force of the screw 23, and the side of the dustproof case 1 is pressed against the side of the medium reading and writing apparatus 2. Therefore, a slight gap is formed between the upper and lower surfaces of the dustproof case and the upper and lower surfaces of the medium reading / writing device.

When the medium read / write device is fixed, as shown in FIG. 5, the front edge 14 of the front edge seal material 13 of the dustproof case is attached to the front panel 24 of the electronic device on which the medium read / write device is mounted. It is mounted so that it is pressed against the back of the camera. When the connectors 5 and 6 are inserted into the back of the medium read / write device 2 fixed to the electric device, the openings 19 and 20 of the resilient sealing material 18 provided on the back plate 8 of the dustproof case as shown in FIG. The peripheral edge is pressed against the peripheral surfaces of the connectors 5 and 6. That is, when the medium read / write device 2 is housed in the dustproof case 1, it is fixed to the electric device main body, and when the cables 3 and 4 are connected thereto, the leading edge sealing material 13 is resiliently pressed against the back of the front panel 24 of the electric device. The gap between the panel 24 and the case body 12 of the dust-proof case is closed, and the resilient sealing material 18 attached to the back plate of the dust-proof case is provided with connector insertion holes 16 and 17 formed in the back plate 8 and the connectors 5 and 6. And seal the gap between them.

A cooling fan 25 of a blow-out type is provided behind the medium read / write device mounted on the front panel side of the electric apparatus in this manner, and the suction air flow 26 cools the outer surface of the dustproof case 1. To The heat radiating action and the dustproof action of the medium read / write device 2 in this case have been described above.

In the above-described embodiment, the front edge sealing member 13 and the elastic sealing member 18 on the back of the dustproof case 1 are attached to the case body 12.
The sealing material 1
As shown in FIGS. 7 and 8, the structures 3 and 18 can be bonded to the back surface of the front panel 24 or bonded to the peripheral surfaces of the connectors 5 and 6. In addition, these sealing materials 13 and 18
Is fixedly attached by bonding or the like, and between the case body 12 and the front panel 24 or the case body 1
It is also possible to adopt a structure in which it is interposed between the connector 2 and the connectors 5 and 6. That is, as shown in FIG. 9, the frame-shaped flange 27 is projected behind the front panel 24, and the front edge sealing material 13 is fitted inside the flange 27, and the front edge of the case body 12 of the dustproof case is attached to the front edge sealing material 13. A flange 28 is provided on the outer periphery of the connectors 5 and 6 as shown in FIG.
A structure in which the elastic sealing material 18 formed in a rectangular frame shape is sandwiched in a compressed state may be adopted.

[0020]

According to the structure of the present invention described above,
The medium reading / writing device can be effectively cooled by the cooling fan without dust entering the medium reading / writing device. According to the present invention, it is possible to prevent dust from entering through a gap of a shutter provided at a medium insertion port of a medium reading / writing device, and thus, it is possible to read / write a magneto-optical disk or an optical disk which is liable to cause malfunction or reading error due to dust entry. It is particularly effective as a cooling structure of the device.

[Brief description of the drawings]

FIG. 1 is a schematic sectional side view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a dustproof case and a medium read / write device.

FIG. 3 is a perspective view showing a dustproof case and a connector inserted therein.

FIG. 4 is a perspective view showing an example of a fixing structure of the medium reading / writing device.

FIG. 5 is an enlarged sectional side view showing a closed structure of a front edge portion of the dustproof case.

FIG. 6 is an enlarged sectional side view showing a sealed structure of a connector connection portion of a dustproof case.

FIG. 7 is a schematic side view showing another example of the leading edge sealing structure.

FIG. 8 is a schematic cross-sectional side view showing another example of the sealed structure of the connector insertion portion.

FIG. 9 is a schematic cross-sectional side view showing still another example of the leading edge sealing structure.

FIG. 10 is a schematic cross-sectional side view showing still another example of the sealed structure of the connector insertion portion.

FIG. 11 is a view similar to FIG. 1, schematically showing a conventional structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dustproof case 2 Medium read / write device 3 Power cable 4 Signal cable 5 Connector 6 Connector 8 Back plate 12 Case main body 13 Front edge sealing material 14 Front edge 15 Peripheral edge 16 Connector insertion port 17 Connector insertion port 18 Resilient sealing material 19 Opening 20 Opening 21 Media slot 24 Front panel 25 Cooling fan 27 Flange 28 Flange 29 Opening

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 33/14

Claims (3)

(57) [Claims] 1. A medium reading / writing device (2) is mounted with a medium insertion opening (21) communicating with an opening (29) provided in a front panel (24), and a rear blow-out type cooling fan (25) is provided behind the device. In the cooling structure of a medium read / write device provided with a rectangular cylindrical dust-proof case, a part protruding backward from the front panel (24) of the medium read / write device (2) is closed at one of its small faces with a back plate (8).
The rectangular cylindrical dustproof case is inserted into the front panel (2) through an elastic sealing material (13).
4) Closely attached to the back of the
(1) The cooling structure for a medium reading / writing device, wherein the medium reading / writing device is cooled by a suction airflow of the cooling fan flowing in contact with the outer surface of (1). 2. An electrical connection cable for a medium read / write device.
(3) and (4) are connectors (5) and (5) from the opposite side of the media slot (21).
In the cooling structure of the medium reading / writing device drawn out through (6), the dustproof case (1) is provided with an opening for inserting a connector.
Connectors (5) and (6), which are provided with a back plate (8) having (16) and (17) and are connected to the medium reading / writing device (2), include the back plate (8) and the outer peripheral surface of the connector or the connector Resilient sealing material (18) interposed in a compressed state with the collar (28) provided in
The cooling structure for a medium reading / writing device according to claim 1, wherein the cooling structure is connected to the medium reading / writing device (2) via a medium. 3. A bottomed cylindrical case body (12) having one of its small faces closed by a rear plate (8), and the rear plate (8) has connector insertion ports (16) and (17). Equipped, connector insertion port (16), (1
In (7), an elastic sealing material (18) having openings (19) and (20) with dimensions smaller than the outer dimensions of the connectors (5) and (6) to be inserted is attached to the back plate (8). And the case body
On the periphery (15) of the opening-side small face of (12), a resilient front edge sealing material (13) is attached to the front edge (14) of the peripheral edge (15) of the case body.
A dustproof case for a medium read / write device, wherein the dustproof case is mounted so as to protrude forward.