JP2508649Y2 - Optical disc drive device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an optical disc drive device for optically writing and / or reading an information signal to / from an optical disc or the like.

[Outline of device]

The present invention is, for example, an optical disc drive device for optically writing and / or reading an information signal to and from an optical disc and the like. By providing the back panel that closes the side opening inside the external connection terminal provided on the printed circuit board facing the back opening, it is possible to prevent dust from entering the housing and to maintain a good long-term performance. Information signals are written and / or read.

[Conventional technology]

2. Description of the Related Art Conventionally, there has been proposed an optical disk which is configured to optically write and / or read an information signal (hereinafter, simply referred to as writing / reading) and is used as a recording medium of an information signal.

In order to write / read information signals to / from such an optical disc, a spindle motor for rotating the optical disc and an optical pickup device for writing / reading information signals by irradiating the recording surface of the optical disc with a laser are provided. The configured optical disc drive device is used.

For example, an optical disc drive device mounted on a computer or the like has a disc rotation drive device including the spindle motor or the like and an information reading device including an optical pickup device and the like built in the casing, and a disc that closes the front surface of the casing. A front panel having an insertion / removal opening is attached, and the front panel is provided opposite to the cooling fan provided on the rear side of the outer casing of the computer.

However, in most of the optical disk drive devices heretofore, no particular consideration has been given to the ventilation inside and outside the housing containing the disk rotation drive device and the information reading device. Therefore, the cooling fan provided facing the drive device draws air into the housing through the disk insertion / ejection opening provided on the front panel, and the dust carried by the air adheres to the lens surface of the optical disk or pickup. I have something to do.
If this is left as it is, the surface of the optical disk to which the light is irradiated and the lens surface of the pickup may become dirty and may become unreadable eventually. In particular, when used in a dusty place, dust is remarkably attached to the lens surface of the optical disc or the pickup, which shortens the life of the drive device.

Therefore, in order to prevent dust from entering the housing, it is conventionally proposed to cover the housing from the back side of the housing to the front side where the front panel is provided so as to cover the housing with a vinyl bag or the like. Has been done.

However, depending on the cover, the airtightness inside the housing can be ensured to some extent, but since the external connection terminal for connecting to the computer is provided on the back side of the housing, the airtightness at the mounting portion of the external connection terminal is improved. It will be incomplete, and it will not be possible to prevent the ingress of dust into the housing.

[Problems to be solved by the device]

Therefore, the present invention has been proposed in view of such conventional circumstances, and does not ensure the airtightness inside the housing in which the disk rotation drive device, the information reading device, etc. are built, and the inside of the housing is secured. An object of the present invention is to provide an optical disk drive device capable of preventing intrusion of dust and capable of writing / reading an excellent information signal for a long period of time.

[Means for solving the problem]

To achieve the above object, the present invention includes at least a spindle motor and an optical pickup device,
A housing whose front and rear sides are open, a front panel having a disk insertion / removal opening for closing the front opening of the housing, and a housing provided inside the housing, a part of which is located on the rear opening of the housing. A printed board, an external connection terminal disposed on the printed board exposed at the back side opening of the housing, and a back panel closing the back side opening of the housing. The back panel is provided inside the external connection terminal and closes a back side opening of the housing.

[Action]

In the optical disc drive device according to the present invention, a part of the printed circuit board is exposed at the opening on the back side of the housing in which the spindle motor, the optical pickup device, the printed circuit board or the like is built, and the external device is mounted on the printed circuit board. Since the connection terminal is provided and the back panel is provided inside the external connection terminal to close the back side opening of the housing, the airtightness on the back side is ensured and the housing is secured. Dust can be prevented from entering inside.

〔Example〕

Hereinafter, specific embodiments to which the present invention is applied will be described.

In this embodiment, an optical disk such as a CD-R is used as a cartridge.
A disk cartridge containing OM etc. is installed,
This is an example configured as an optical disc drive device for reading information signals from this CD-ROM.

As shown in FIG. 1, an optical disc drive device of the present embodiment mainly includes a casing (1) containing a disc rotation driving device including a spindle motor and an information reading device including an optical pickup device, and the casing (1). A front panel (2) for closing the front side and the back side of (1)
And a rear panel (3).

The housing (1) is, for example, a disk rotation driving device and an information reading device for reading information signals from a CD-ROM, and a printed circuit board (wiring circuit, electronic parts, etc. for driving these). 4) etc. are built in. The casing (1) is a casing having a rectangular cross section in which the front side on which the front panel (2) is provided and the rear side opposite thereto are open. The bottom of the housing (1) is provided with a spindle motor (5), an optical pickup device (6) or a loading mechanism (7) for moving the disk cartridge in and out of the housing (1). In this example, the loading mechanism (7) includes a cartridge holder (7a) for holding a cartridge, a disk insertion / removal opening and a spindle motor (5) provided with the cartridge holder (7a) on the front panel (2). A disk table (5a) provided at the tip of the drive shaft and an operating section (7b) for moving the disk table (5a) are used.

On the other hand, a printed circuit board (4) is provided on the top of the housing (1). This printed circuit board (4) is arranged with a minute gap to the inner wall surface (1a) of the housing (1), and one end of the printed board (4) is located on the back side opening (1b) of the housing (1). It is designed to face you. At one end of the printed circuit board (4) exposed at the rear side opening (1b), an external connector including various connectors for connecting the spindle motor (5), the optical pickup device (6) and the like to a computer is provided. A connection terminal (8) is provided. Then, in the rear side opening (1b), a sealing member (9) made of an elastic body is provided between one end of the printed circuit board (4) and the inner wall surface (1a) of the housing (1). The gap is closed. That is, the gap between the printed board (4) and the inner wall surface (1a) of the housing (1) is sealed by the sealing member (9),
Airtightness between the printed board (4) and the inner wall surface (1a) is ensured. The printed circuit board (4) may be closely attached to the inner wall surface (1a) of the housing (1).

The front panel (2) is a so-called decorative plate that closes the front opening (1c) of the housing (1) and blinds the spindle motor (5), the optical pickup device (6), etc. provided inside. It plays the role of. The front panel (2) is provided with a disc insertion / removal opening (2a) for attaching the disc cartridge to the loading mechanism (7). This disk insertion / extraction (2
a) is formed as a flat rectangular hole corresponding to the size of the disc cartridge, and the cartridge holder (7
a) the cartridge holder (7
It is provided at a position facing a).

On the other hand, the back panel (3) is for closing the back side opening (1d) of the housing (1) to ensure airtightness inside the housing (1). This back panel (3)
Is inside the external connection terminal (8), that is, on the printed circuit board (4) near the front panel (2) avoiding the external connection terminal (8) and on the bottom of the housing near the rear side opening (1b). It is provided across the inner wall surface (1d). That is,
The back panel (3) has one end (3a) provided on a printed circuit board (4) near the front panel (2) avoiding the external connection terminals (8) via a sealing member (10) made of an elastic body. The middle portion (3b) is bent so as to avoid the external connection terminal (8), and the other end (3b) is provided on the inner wall surface (1d) at the bottom of the housing near the rear opening (1d). As a result, the back side opening (1d) of the housing (1) is closed by the back panel (3), and a space between the printed board (4) and the inner wall surface (1d) of the bottom of the housing is sandwiched. Airtightness is ensured.

Further, in this example, in order to make the airtightness inside the housing (1) more reliable, the housing (1) has a bottom portion extending from the back surface side to the front surface side so as to wrap the housing (1). A cylindrical hermetic cover (11) is covered. The airtight cover (11) may be made of any material as long as it does not allow dust to pass therethrough and has excellent heat resistance, and may be formed of, for example, plastic, metal, resin film or the like.

The optical disc drive device configured as described above is mounted on an outer casing (12) of a computer or the like as shown in FIG. 2, for example. Usually, in a computer or the like, a cooling fan (13) for releasing heat generated from various devices built in the outer casing (12) to the outside is provided.
It is provided on the back side opposite to the front side on which the operation section is provided, and is designed to prevent the temperature inside the outer casing (12) from rising. In the conventional optical disk drive device, since the airtightness at the mounting portion of the external connection terminal was incomplete, the invasion of dust into the housing (1) was unavoidable. In the drive device, since the back side of the housing (1) is closed by the back panel (3) inside the external connection terminal (8), airtightness on the back side is ensured. Therefore, the suction from the cooling fan (13) prevents dust from entering the drive through the disc insertion / ejection opening (2a) formed in the front panel (2). This has been confirmed by the present inventors through experiments. That is, it is possible to prevent air from leaking to the back side by closing the back side and making the housing (1) a so-called dead end structure. Therefore, according to the optical disc drive device of the present embodiment, it is possible to prevent dust from adhering to the lens surface of the CD-ROM or the pickup built in the housing (1), and to obtain a good information signal for a long period of time. Reading can be performed, and the life of the drive device can be extended.

It should be noted that, in the above-described embodiment, the example using the CD-ROM is explained, but in the optical disc drive device of the present invention
It is effective not only for a CD-ROM but also for an optical disc on which information signals are optically written and / or read.

[Effect of device]

As is apparent from the above description, in the optical disc drive device of the present invention, the rear panel that closes the rear side opening of the housing in which the spindle motor, the optical pickup device, etc. are built is provided with the rear side opening. Since it is provided inside the external connection terminal provided at one end of the printed circuit board facing the front side, airtightness on the back side can be ensured and the housing can be reliably sealed.

Therefore, invasion of dust into the housing can be prevented, excellent writing / reading of information signals to / from the optical disk built in the housing can be performed for a long time, and the life of the drive device can be extended. .

This is particularly effective when the optical disk drive device of the present invention is mounted on a computer or the like having a cooling fan.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of an optical disk drive device to which the present invention is applied, and FIG. 2 is a sectional view showing an example in which the drive device is mounted on an outer casing of a computer. 1 …… Housing 2 …… Front panel 3 …… Rear panel 4 …… Printed circuit board 5 …… Spindle motor 6 …… Optical pickup device 8 …… External connection terminal 11 …… Sealing cover

Claims (1)

(57) [Scope of utility model registration request] 1. A housing in which at least a spindle motor and an optical pickup device are built in, a front side and a rear side of which are open, a front panel which is formed with a disk insertion opening for closing a front side opening of the housing, and the above housing. A printed circuit board provided inside the housing, a part of which is exposed at the back side opening of the housing; external connection terminals provided on the printed circuit board exposed at the back side opening of the housing; and a back surface of the housing. An optical disc, comprising: a rear panel that closes a side opening, wherein the back panel is provided inside the external connection terminal and closes a rear opening of the housing. Drive device.