JP3582236B2 - Optical disk drive - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
Optical disk devices such as CD-ROM and DVD-ROM / RAM.
[0002]
[Prior art]
The so-called tray attachment / detachment system, in which an optical disk is mounted on a transfer member called a tray drawn out of the optical disk device housing and moved to the inside of the housing to mount the optical disk on the optical disk device, Since a general user is accustomed to directly mounting a CD (compact disc) with a generally-used CD player, the CD-ROM has become mainstream.
[0003]
However, due to its structure, a gap is formed in the entrance of the optical disk of the front panel, so that dust easily enters. Dust accumulates on the objective lens of the optical pickup, hinders the passage of laser light, and causes data reading errors and the like. It is a well-known fact that an optical disk device is susceptible to dust, and a dustproof structure for preventing dust from entering is required.
[0004]
As described in Japanese Utility Model Unexamined Publication No. Sho 61-45762, a conventional apparatus is provided with a double door at a disk slot of the apparatus in order to prevent dust from entering. The door closes the disk slot when the disk is mounted and when the disk is not mounted, thereby preventing dust from entering.
[0005]
[Problems to be solved by the invention]
However, in the above-mentioned known example, the number of parts is increased and the structure is complicated. In addition, dust enters not only from the front of the apparatus but also from the side and the rear, and depending on the dust-proof structure of that part, there may be no dust-proof effect at all, and the description of the entire apparatus is unclear. is there. It is necessary to make the whole device dustproof. In addition, a dustproof structure including the incorporation into a personal computer is required.
[0006]
Further, in recent years, the vibration of the optical pickup mechanism due to the unbalanced rotation of the optical disk accompanying the high-speed rotation (high-speed data transfer technology) of the optical disk of the apparatus has been transmitted to the housing, and the noise causing resonance has been a problem.
[0007]
SUMMARY OF THE INVENTION It is an object of the present invention to simplify the dust structure of the optical disk entrance and to make the entire apparatus dust-proof.
[0008]
Another object of the present invention is to provide an anti-vibration structure for preventing resonance of a housing due to transmission of rotational vibration.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention
An elastic plate-shaped cushion cushion is attached between the tray panel and the tray. When the tray is pulled into the apparatus, the cushion is pressed against the optical disk slot of the front panel, and the optical disk slot is inserted. It was made to be a shielding plate to block the.
[0010]
In addition, the top cover and the bottom cover are fixed to the mechanical base approximately on the axis of the mounting screw hole of the device, and the ribs of the mechanical base are sandwiched between the top cover and the bottom cover, and the top cover and the bottom cover are fixed together. Even when the device is mounted in a personal computer, the bottom cover does not open to the outside to keep the dust-proof structure, and the resonance of the top cover and the bottom cover due to the vibration caused by the high-speed rotation of the optical disk of the device is suppressed.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is an exploded perspective view showing one embodiment of an optical disk device according to the present invention, wherein 1 is an optical disk, 2 is a tray panel, 3 is a boss cushion, 4 is a tray, 5 is a front panel, 6 is a front substrate, 7 is a mechanical base, 8 is an optical pickup mechanism, 9 is a main board, 10 is a top cover, 11 is a bottom cover, 12 is a bowl cover, and 13 is a loading mechanism.
[0013]
In FIG. 1, a mechanical base 7 is a resin member serving as a base on which exterior components such as the loading mechanism 13, the optical pickup mechanism 8, and the top cover 10 are mounted.
[0014]
The main board 9 is a circuit board having an input / output connector 9a for controlling the operation of the apparatus and inputting / outputting data. As will be described later, the main board 9 is fixed to the top cover 10 with screws 9b. And, in the mounted state, it functions as a shielding plate for preventing dust from entering the apparatus.
[0015]
The front substrate 6 is a circuit substrate provided with a headphone 6a, a headphone volume 6b, an LED 6c, an eject button 6d, and the like, and is connected to the main substrate 9 by a flexible substrate 6e.
[0016]
The optical pickup mechanism 8 reads data from the optical disk 1 and writes data to the optical disk 1. The flexible substrates 8a and 8b are connected to the main substrate 9.
[0017]
The front substrate 6 and the optical pickup mechanism 8 are connected to the main substrate 9 by flexible substrates 6e, 8a, and 8b. However, as shown in FIG. 3, in order to prevent dust from entering, and to prevent the tray 4 from contacting when moving. Through a hole 7 a of the mechanical base 7.
[0018]
Returning to FIG. 1, the loading mechanism 13 is a drive mechanism that moves the tray 4 that transports the optical disc 1 into the apparatus and moves the optical pickup mechanism 8 up and down, and is controlled by the main substrate 9. (A description of its operation and structure is not particularly important and will be omitted.)
The tray panel 2 is a design (decorative) resin member attached to the front of the tray 4. To the tray panel 2, a resin cushion 3 made of elastic neoprene rubber or the like is adhered and fixed. FIG. 2 shows the shapes of the tray panel 2 and the bow cushion 3. In FIG. 2, the tray panel 2 is provided with a mounting claw 2 a that engages with the tray panel 2 mounting hole 4 a of the tray 4. The claw 2a has a positioning (seat) 2b between the tray panel 2 and the tray 4 such that there is a space substantially equal to the thickness of the later described cushion 3. A dowel 2c is provided for positioning when the bow cushion 3 is attached. Further, a stopper 2d is provided to engage with the projection 4b of the tray 4 so as not to come off after the hook 2a is engaged.
[0019]
The bow cushion 3 is provided with a claw 2a of the tray panel 2 and relief holes 3a and 3b for a stopper 2d. Further, there are positioning holes 3c and 3d for fitting into the dowels 2c of the tray panel 2. An adhesive 3e is attached to the attachment surface, and is attached to the tray panel 2. The adhesive material 3e of the bow cushion 3 is made of a rigid base material such as polyester in order to easily and accurately perform the attaching operation. After bonding the boss cushion 3 to the tray panel 2, the tray panel 2 is engaged with the claws of the tray 4 and is slid until it gets over the stopper 2 d to be assembled.
[0020]
With this structure, the number of components can be minimized. With this shape, there is no problem such as peeling because the bonding area is large. In addition, the area to be punched out by drilling during manufacturing is small, and there are few discarded parts, so it is environmentally friendly.
[0021]
At the position where the tray 4 is pulled into the apparatus, as shown in FIG. 4, the boss cushion 3 comes into pressure contact with (or is in contact with) the optical disk 1 slot 5 a of the front panel 5, and the optical disk 1 slot 5 a To prevent dust from entering the device. As described above, since the bow cushion 3 is a material having elasticity, even if it is pressed, it does not load the loading mechanism 13.
[0022]
Returning to FIG. 1 again, the bowl cover 12 is a dustproof resin member that prevents dust from entering through a gap between the input / output connector 9a of the main board 9 and the main board 9, and is attached to the mechanical base 7 with the snap claws 12a.
[0023]
The top cover 10 is an exterior member. Since the main board 9 is generally grounded on a metal member such as the top cover 10 for circuit design, the main board 9 is screwed to the top cover 10 with a screw 9b.
[0024]
The bottom cover 11 is provided with mounting screw holes 11a on both sides and a bottom surface in accordance with a standard for mounting the device in a mounting bay of a personal computer, a workstation or the like. Inside the screw hole 11a of the device, a screw tip relief space 7b is provided in the mechanical base 7 so that the tip of the screw 11b does not come into contact when mounting using the mounting screw hole 11a. Further, since all the screw holes 11a are not always used in the screw-escape space 7b when the device is mounted, even if dust enters from the unused screw holes 11a, the dust is prevented from entering the inside of the device. There is a need. Further, the bottom cover 11 is generally electrically grounded similarly to the top cover 10. Therefore, the top cover 10 and the bottom cover 11 are generally electrically connected by screwing.
[0025]
The screwing position of the device of the present invention is provided on the general axis of the mounting screw hole 11 a of the bottom cover 11. Further, as shown in FIG. 3, a rib 7c of the mechanical base 7 is sandwiched between the top cover 10 and the bottom cover 11, and both are narrowed down with screws 10a. Since the inside of the device is shielded from the outside by the inner wall ribs 7d, even if dust enters through the mounting screw hole 11a, the dust does not enter the device and a dustproof structure can be obtained.
[0026]
If the screwing position is provided on the axis of the mounting screw hole 11a, when the device is mounted in a mounting bay of a personal computer or the like, a force is applied to the mounting screw 11b of the personal computer or the like so that the mounting screw portion 11a opens outward. In addition, since the device is least stressed and hardly deformed, the dust-proof structure can be maintained.
[0027]
That is, the dimensions of the mounting bay of a personal computer or the like are slid from the outside into the mounting bay, so that the dimensions of the mounting bay are always larger. In this case, the side plate 11c of the bottom cover 11 is expanded outward by the mounting screws 11a. However, according to this structure, since the top cover 10 is screwed on the line of force, the bottom cover 11 is difficult to open.
[0028]
If the screwing position is not on the line of force, a bending moment is generated, so that the bottom cover 11 is deformed and easily opened outward. When the side plate 11c of the bottom cover 11 opens outward, dust enters through the opened gap. In addition, there is a possibility that the main body of the apparatus may be damaged by deformation.
[0029]
When the rib 7c of the mechanical base 7 is sandwiched between the top cover 10, the bottom cover 11 and the top cover 10, the top cover 10 and the bottom cover 11 are firmly fixed to the mechanical base 7. Without the rib 7c, the top cover 10 is not fixed by screwing to the mechanical base 7, so that the top cover 10 becomes unstable and resonates when the rotational vibration of the optical disc 1 is transmitted, causing noise such as chatter.
[0030]
Further, with regard to the screwing position, it is difficult to fix a plurality of screws at positions other than on the approximate axis of the mounting screw hole due to space limitations. This will be described with reference to FIG. In the figure, the shape of the mechanical base 7 is changed from that of the present invention for easy understanding. In this figure, it is easier to provide a screw between a than in FIG. 1 and there is no particular problem. Since the flexible boards 8a and 8b of the optical pickup mechanism 8 pass between the points b and b, it is difficult to avoid such space. Even if it can be screwed, the balance of screwing is bad. Between c, there are a claw 7e for temporarily fixing the bottom cover 11, a gear 13a of the loading mechanism 13, a claw 5b of the front panel 5, and the like. In order to avoid interference with them, the members are subject to considerable design constraints, and the degree of freedom in design is lost. Assuming that only one portion between the positions a is screwed, the front cover 10 is fixed on the front side with the claw 7e. Since the fixing is unstable, resonance easily occurs.
[0031]
With the above configuration, this embodiment has the following effects.
[0032]
According to the present invention, the dust protection of the front can be performed only by the bow cushion 3 as shown in FIG. 2, so that the dust protection structure can be simplified. There is no problem with the strength of fixing the boudin cushion.
[0033]
As is clear from FIGS. 3 and 4 (sections AA and BB in the exploded perspective view of FIG. 1), the inside of the device having the optical pickup mechanism 8 has the front side with the bobbin cushion 3, and the rear side with the rear side. Since the bottom cover 11 and the mechanical base 7 on both sides and the bottom surface are enclosed by the main board 9 on the both sides and the bottom surface of the mechanical cover 7, it is in a sealed state, and can prevent dust from entering the device.
[0034]
Since the top cover 10 and the bottom cover 11 are screwed on the general axis of the mounting screws 11a, when the apparatus is mounted on a personal computer or the like, it is possible to prevent the bottom cover 11 from being opened due to mounting, and to maintain the dustproof structure even after mounting. Can be a body structure. The deformation of the device body can also be prevented.
[0035]
Since the ribs 7c of the mechanical base 7 are sandwiched and screwed between the top cover 10 and the bottom cover 11, the bottom cover 11 and the top cover 10 can be grounded, and at the same time, the top cover 10 is firmly fixed to the mechanical base 7 and vibrated. It is possible to prevent chatter.
[0036]
In addition, the groove 7b through which the screw flange of the bottom cover 11 of the mechanical base 7 passes and the clearance space for the mounting screw hole 11a can be shared, so that the structure of the mechanical base 7 is simplified.
[0037]
And so on.
[0038]
【The invention's effect】
As explained above, according to the present invention,
The dustproof structure at the front can be simplified.
[0039]
A dustproof structure can be used for the entire device.
[0040]
Even when mounted on a personal computer, the dustproof performance does not deteriorate.
[0041]
The exterior parts can be firmly fixed to the mechanical base, and noise such as chatter due to rotational vibration of the optical disk of the optical pickup can be reduced.
[0042]
The mechanical base can have a simple structure.
[0043]
And so on.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an optical disk device according to the present invention; FIG. 2 is a detailed view of the shapes of a tray panel and a bow cushion; FIG.
FIG. 4 is a cross section BB of FIG.
FIG. 5 shows a general method of screwing a top cover and a bottom cover.
DESCRIPTION OF SYMBOLS 1 ... Optical disk 2 ... Tray panel 2a ... Mounting claw 2b ... Positioning 2c ... Dowel 2d ... Stopper 3 ... Booth cushion 3a, 3b ... Escape hole 3e ... Adhesive material 4 ... Tray 4a ... Mounting hole 4b ... Protrusion 5 ... Front panel 5a ... Outlet 5b ... Claw 6 ... Front board 6a ... Headphone 6b ... Headphone volume 6c ... Display LED 6d ... Eject button 6e ... Flexible board 7 ... Mechanical base 7a ... Hole 7c ... Rib 7d ... Inner rib 7e ... Claw 8 ... Optical pickup mechanism 8a, 8b ... Flexible board 9 ... Main board 9a ... I / O connector 10 ... Top cover 11 ... Bottom cover 11a ... Mounting screw hole 11b ... Screw 11c ... Side plate 12 ... Boudin cover 12a ... Snap claw 13 ... Loading mechanism 13a …gear

Claims (6)

An optical disc apparatus including a tray on which an optical disc is placed, an optical disc transfer member having a tray panel located on the front of the tray, a loading mechanism for moving the transfer member into and out of the apparatus, and a main body having a slot for taking the transfer member in and out. At
Between the tray and the tray panel, said only set the smaller than the tray panel the loading and unloading opening is larger than plate-like elastic member, plate-like elastic bodies projecting positioning of the plate-like elastic body provided on the tray panel the optical disk apparatus characterized that you have have a positioning hole of substantially the same shape to fit with. 2. The optical disk device according to claim 1, wherein the elastic body is a foamed neoprene rubber. 2. The optical disk device according to claim 1, wherein the tray panel and the elastic body are locked. 2. The optical disk device according to claim 1, wherein the tray panel and the elastic body are attached to each other. 2. The optical disk device according to claim 1, wherein the access port is sealed with the elastic body in a state where the transfer member is carried in. 2. The optical disk device according to claim 1, further comprising a mechanical base on which the optical pickup mechanism, the optical disk transport member, and the loading mechanism are mounted.

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