JPH07282575A - Optical disk driving device - Google Patents

Abstract

PURPOSE:To protect an optical disk from dust etc., by protecting the optical disk placed on a tray in a hermetic space by utilizing part of this tray and the sub-chassis disposed in the device when the-optical disk is withdrawn into an optical disk driving device. CONSTITUTION:This optical disk driving device has a frame body 1 constituting a casing, the first sub-chassis 2 supported liftably at this frame body 1, the second sub-chassis 6 engaging with the first sub-chassis when the first sub-chassis is risen, a main chassis 5 and the tray for loading the optical disk. Data are recorded on the optical disk by an access mechanism disposed in the main chassis 5 or the data of the optical disk are reproduced when the optical disk 4 is loaded. The hermetic space is composed of part 7a of the tray 7, the risen first sub-chassis 2 and the second sub-chassis engaging with the first sub-chassis when the tray 7 is inserted into the casing 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk drive device for driving an optical disk, and more particularly, to a dustproof mechanism for protecting an access mechanism portion, which is vulnerable to dust inside the drive device, inside an airtight container. Regarding

[0002]

2. Description of the Related Art Generally, in an optical disk drive, an optical disk is placed on a tray, and in that state, that is, the optical disk is placed on the tray, the tray is drawn into the optical disk drive, and then the tray Lower part to engage the center hole of the optical disc with the turntable, then lower the clamp plate, press the optical disc with a clamper rotatably attached to the clamp plate, and press the optical disc between the clamper and the turntable. And the optical disk is rotated by rotating the turntable with a motor.

During reproduction, if the positional relationship between the optical disc and the pickup changes due to surface deflection of the optical disc,
This state is detected, for example, as a focus shift, and the lens of the pickup is moved by the actuator based on the detection signal, so that the positional relationship between the pickup and the optical disk is adjusted, and stable reproduction can be performed.

However, in the conventional optical disk drive device as described above, the clamp plate is moved in the vertical direction in the device. Therefore, the mechanism is complicated, and further, the movement of the clamp plate and the pickup are performed. Separate drive motors are used to adjust the position of the included chassis to move, which complicates the mechanism of the device, increases the number of parts, and raises the cost.

In order to solve the above-mentioned problems, for example, in the invention disclosed in Japanese Patent Laid-Open No. 63-298793, a first member is supported by a chassis constituting a main body of an optical disk drive device so as to be vertically movable. A sub-chassis and a rotatably supported second sub-chassis are provided, and a turntable on which the optical disc is mounted and a motor for rotating the turntable are provided on the first sub-chassis. A pickup for reading the signal and a transfer means for transferring the pickup are provided on the second sub-chassis, and further, the first sub-chassis is moved up and down and the second sub-chassis is rotated at the same time. An elevating means having two states, that is, a state in which only the second sub-chassis is rotated, and an elevating means provided to face the turntable. A rotatable clamper and holding means for holding the clamper in a position facing the turntable substantially concentrically are provided, so that a single means holds the optical disc on the turntable and picks up the pickup. The position adjustment can be performed, the number of parts of the optical disk drive reproducing apparatus is reduced, and the cost is reduced.

[0006]

However, the above-mentioned Japanese Unexamined Patent Application Publication No.
In the invention described in Japanese Patent Laid-Open No. 3-298793, when the optical disk is placed on the tray and pulled into the apparatus main body, the spindle motor and the pickup that are lowered in the bent state are lifted and loaded. In the conventional tray-loading type optical disc driving device including the optical disc driving device described in 1), dust enters the inside of the drive from the gap between the front panel and the side plate, and further from the upper surface and the lower surface. There was a problem such as a failure of the access mechanism.

The present invention has been made in view of the above circumstances, and in particular, in an optical disk drive device, an access mechanism portion inside the drive, which is weak against dust, is made into a closed space, so that the access mechanism portion is dusted or the like. The purpose of the present invention is to provide a dustproof mechanism that protects against dust.

[0008]

In order to solve the above-mentioned problems, the present invention provides (1) a frame body which constitutes an enclosure, and a first sub-chassis supported by the frame body so as to be capable of moving up and down, A second sub-chassis that is fixed to the frame body and engages with the first sub-chassis when the first sub-chassis is raised, and an anti-vibration mount on the first sub-chassis. And a tray into which the optical disc is detachably mounted and the optical disc can be inserted into and removed from the enclosure. The main chassis is provided in the main chassis when the optical disc is inserted. In the optical disc drive device for recording data on the optical disc or reproducing the data on the optical disc by the access mechanism, when the tray is inserted into the casing, a part of the tray is raised. And serial first of the sub-chassis, the first
And a second subchassis engaged with the second subchassis to form a closed space, and further,
(2) The raising / lowering means and the raising / lowering drive section of the first sub-chassis are provided outside the sealed space, and further, (3)
A shutter for opening and closing a cutout portion provided in a part of the tray is provided, and (4) a rotation center is provided in a part of the first subchassis, and the first subchassis is provided with the rotation center. The second sub-chassis is rotatable, and (5) a fixing mechanism for fixing the main chassis is provided, and the main chassis is fixed to the first sub-chassis when an optical disc is ejected. When the optical disk is mounted, the main chassis is released from the first chassis, and (6) the tray retracting means and the retracting drive section are provided outside the sealed space. Further, (7) a clamper is rotatably provided in a part of the second sub-chassis, and the optical disk is fixed to a rotary motor of a part of the access mechanism section by the clamper. In addition, (8) a part of the tray has a member that engages with an opening on the front surface of the drive when the optical disk is ejected and closes the opening, and (9) when the tray is ejected, When a certain period of time has passed, a tray is housed regardless of the presence or absence of a disc to form a closed space, and (14) an opening is provided on the bottom surface of the first sub-chassis, and the opening is formed by a circuit board. Or (10) a frame body that constitutes an enclosure, and fixedly attached to the frame body, and
A first sub-chassis having an opening in a part thereof, a second sub-chassis provided in the first sub-chassis so as to be able to move up and down, and attached to the second sub-chassis via an antivibration mount. Also, the main chassis to which the access mechanism section for recording data on the optical disc or reproducing the data on the optical disc is fixed, and the optical disc are detachably mounted, and the optical disc can be inserted into and removed from the enclosure. And a tray to be inserted into
The subchassis opening is closed by a part of the tray to form a sealed space, and further, (1
1) A rotation center is provided in a part of the second sub-chassis,
The second sub-chassis is rotated about the rotation center so as to engage with the first sub-chassis, and (12) when a part of the tray is ejected from an optical disc, A member that engages with the opening of the first sub-chassis and closes the opening; further, (13) the first sub-chassis and the frame forming the enclosure are the same;
Alternatively, the drive front panel is common to the first subchassis and the frame body forming the housing, and further, (15)
It is characterized in that openings are provided in the bottom surfaces of the second sub-chassis and the first sub-chassis, and the openings are closed by a circuit board.

[0009]

When the optical disk mounted on the tray is drawn into the optical disk drive, the optical disk is protected in the hermetically sealed space by utilizing a part of the tray and a sub-chassis provided in the apparatus. Therefore, the optical disc is protected from dust and the like.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the invention according to claim 1, that is,
FIG. 1 is a side sectional view for explaining an embodiment of the invention in which a sealed space is formed by a first sub-chassis, a part of a tray, and a second sub-chassis, in which 1 is an optical disk drive. A frame body forming an enclosure of the apparatus, 2 is a first sub-chassis mounted in the frame body 1 so as to be able to move up and down, 3 is an anti-vibration mount, 4 is an optical disk, 5 is a main chassis,
A spindle motor 21, a pickup 27, etc. are mounted on the main chassis 5, and the main chassis 5 is attached to the first sub-chassis 2 via a vibration-proof mount 3 made of, for example, vibration-proof rubber, springs, etc. There is. 6
Is a second sub-chassis having a clamper 28, and the second sub-chassis 6 is fixed to the frame body 1. Reference numeral 7 is a tray for mounting the optical disc 4.

In FIG. 1, FIG. 1A shows a state in which the optical disc 4 is placed on the ejected tray 7, and FIG. 1B shows a state in which the optical disc 4 is placed on the tray 7. The tray 7 is drawn into the housing 1 of the optical disk drive, and FIG. 1C shows the second sub-chassis 6 when the optical disk is drawn into the apparatus as described above. The first sub-chassis 2 is raised with respect to the first sub-chassis 2 and a part of the tray 7a.
3 shows a state in which a closed space 8 is formed by the sub chassis 6 of FIG. As described above, according to the present invention, since the access mechanism portions that are weak against dust inside the optical disk drive device are housed in the sealed space, these access mechanism portions can be protected from dust and the reliability of the device is improved. Can be improved.

FIG. 2 shows an embodiment of the invention described in claim 2, that is, an embodiment in which the elevating means and the elevating drive part of the first sub-chassis 2 are provided outside the sealed space 8. 2A is an exploded perspective view for explaining, in FIG. 2A, 9 is a motor for vertically moving the first sub-chassis 2 in the vertical direction (direction of arrow C), 10 is a slide plate, and the slide plate 10 Is, for example, a shaft 1a having four elongated holes 10a and the elongated holes 10a provided upright on the frame body 1.
E-ring 1 that engages with the shaft 1a
The slide plate 10 can be moved in the direction of arrow B by preventing the slide plate 10 from coming off in the upward direction by c or the like.

Further, for example, two shafts 1b are erected on the frame body 1, and these shafts 1b are engaged with the holes 2a formed in the ear pieces 2'of the first sub-chassis 2. The first sub chassis 2 can move in the direction of arrow C. Further, the side wall 10 'of the slide plate 10
An oblique slot 10b is provided in the slot, and a pin 2b extending laterally of the first sub-chassis 2 is engaged with the slot 10b.

Further, the bottom plate of the slide plate 10 has an elongated hole 10c extending laterally (a direction perpendicular to the moving direction of the slide plate 10), and the elongated hole 10c is biased with respect to the rotation axis of the motor 9. An eccentric shaft 9a provided so as to be engaged is engaged. Therefore, when the motor 9 is rotated in the arrow A direction, the slide plate 10 is moved in the arrow B direction, and the first sub-chassis 2 is moved (moved up and down) in the arrow C direction.

2 (b) and 2 (c) show the motor 9
2B is a schematic plan view showing the relationship between the rotation of the slide plate 10 and the slide plate 10. FIG. 2B shows the state when the slide plate 10 is moved to the rightmost end in FIG. 2) shows the state when the slide plate 10 is moved to the leftmost end in FIG. Thus, in the embodiment shown in FIG. 2, the raising / lowering drive unit and the raising / lowering means for vertically moving the first sub-chassis 2 have the closed space 8 shown in FIG.
Since it is disposed on the outer side of the above, the reliability can be improved without discharging the grease or dust generated by the gear that is usually attached to the ascending / descending driving unit and the ascending / descending means into the sealed space 8.

FIGS. 3 and 4 show the invention according to claim 3,
That is, FIG. 3A is a diagram for explaining an embodiment in which a shutter that can be opened and closed is provided in a part of the tray 7.
Is an exploded perspective view, FIG. 3 (b) is a sectional view taken along line BB of FIG. 3 (a), FIG. 3 (c) is a view of FIG. 3 (a) viewed from the direction C, and FIG. FIG. 4 is a perspective view of a main part showing a connection relationship between the shutter 14 and the tray 7. As shown in FIG. 3A, in the U-shaped portion of the shutter 14 in which one side is bent in a U-shape with long sides,
The square member 15 having the central hole 15a is fixed by the screw 13, and when the shaft 17 is assembled in the tray 7, the shaft 17 is attached to the hole 15a of the square member 15 so as to be slidable. At this time, the tip of the long side of the U-shaped shutter 14 is held by the member 11. The shutter 14 is biased by a spring 16 so as to constantly prevent the hole 7c provided in the tray 7.
4 to open the shutter 14 against the spring 16
Is moved in the direction indicated by arrow C in FIGS. 3 (c) and 3 (d). Specifically, as shown in FIG. 4A, a lever 18 biased in the direction of arrow D is provided inside the second sub-chassis 6, and when the tray 7 is pulled in, the lever 18 is As shown in FIG. 4 (b), when the shutter 14 comes into contact and the tray 7 is further pulled in, the shutter 14 is pushed against the spring 16 by the lever 18, and finally, as shown in FIG. As shown in
Is designed to open.

5 and 6 show the invention according to claim 4,
That is, a diagram for explaining an embodiment in which a rotation center is provided in a part of the first sub-chassis 2 and the first sub-chassis 2 is rotatable with respect to the second sub-chassis 6, The second sub-chassis 6 and the first sub-chassis 2 are rotatably supported by a shaft 19 and are retained by an E-ring or a nut 19a. As shown in FIGS. 5A to 5C, the first sub-chassis 2 is rotated in the D direction about the shaft 19 by a known lifting device, and finally, as shown in FIG. As shown in FIG.
It becomes the same as the state of (c). Similar to the embodiment shown in FIG. 1, the main chassis 5 is attached to the first sub-chassis 2 via the vibration-proof mount 3, and the main chassis 5 has the spindle motor 21, the pickup 27, and the pickup 27. Is attached to the second sub-chassis 6, and a clamper 28 made of a magnetic material is loosely fitted and attached to the second sub-chassis 6. Therefore, after the optical disk 4 is placed on the tray 7, when the tray 7 is incorporated into the apparatus, the first sub-chassis 2 is raised and the optical disk 4 is moved by the spindle motor 21.
It floats up from the tray 7 (FIG. 5C), and at the same time, the clamper 28 is attracted by a magnet (not shown) provided on the spindle 21, and the optical disk 4 is sandwiched by the magnet and the spindle, and the optical disk 4 is held. It can be fixed on the spindle and rotatable.

FIG. 7 shows an invention according to claim 5, that is, a fixing mechanism for fixing the main chassis 5 is provided, and the main chassis 5 is fixed (locked) to the first sub-chassis 2 when the optical disk is ejected. However, FIG. 7A is a diagram for explaining an embodiment in which the fixing is released (unlocked) when the optical disc is mounted, and FIG. 7A shows an elastic rubber, a spring, etc., for isolating the main chassis 5 from disturbance. An example in which the vibration-proof mount 3 supports the first sub-chassis 2 is shown. In addition, FIG.
(I) shows a state in which the main chassis 5 is not locked, and FIGS. 7 (a)-(II) show a state in which the main chassis 5 is locked. The main chassis 5 is shown in FIGS. 7 (a)-(I). As described above, it is normally supported in a dull state within a range of 1 mm to 2 mm.

When the optical disk 4 is ejected, for example, when the optical disk 4 is placed on the tray 7 and pulled into the apparatus, the optical disk 4 is in the locked state shown in FIGS. 7 (a)-(II). 7 is pulled in together with the tray 7, the first sub-chassis 2 is raised and the optical disc 4 is clamped by the clamper 28 as described above.
The free state shown in (a)-(I) is obtained. 24 is a lock plate, and this lock plate 24 is, for example, as shown in FIG.
Has a pin 24a that engages with a hole 10d provided in the slide plate 10, and the lock plate 24 moves in the (B ') direction in conjunction with the movement of the slide plate 10 in the (B) direction. When the pin 5a provided on the main chassis 5 enters the V-shaped groove 24b provided on the lock plate 24, the movement of the main chassis 5 is changed as shown in FIG.
As shown in I), it is regulated, or as shown in FIGS. 7A to 7I, it is in a free state.

The timing for locking or freeing the movement of the main chassis 5 is determined by the slide plate 10
It can be adjusted by the position of the hole 10d provided in the. Further, when the optical disk 4 is inserted, the main chassis 5 is contracted in the A direction as shown in FIGS. Furthermore,
When the optical disc 4 is not inserted, as shown in FIG.
Since the state (II) is set, that is, the main chassis 5 is held, it is possible to prevent the main chassis 5 from crashing due to an impact or the like when a disturbance is applied.

FIG. 7C is a diagram for explaining an example of locking or freeing the main chassis 5 described above. The sensor 30 detects the presence or absence of the optical disk 4 and sends a signal to the drive controller 31. To drive the solenoid or motor 32 for moving the lock plate 24 to lock or free the main chassis 5 as described above.

FIG. 8 is a diagram for explaining an embodiment of the invention described in claim 6. In this embodiment, a rack 7b is provided on the side surface of a tray 7 for carrying an optical disk 4, and a motor 20 is provided. This rack 7b slides the tray 7 in the direction of arrow A through the gear 12 (12a, 12b, 12c) by rotating the tray 7 forward and backward. However, according to this embodiment, the rack 7b and the motor for driving the rack 7b are provided outside the enclosed space formed by the first sub-chassis 2, the second sub-chassis 6 and the tray portion 7a. 20, gears 12a, 12b, 12c, etc. can be provided, and in this way, the disk can be protected from the grease and gear residue generated from the tray drive section.

In a seventh aspect of the present invention, a clamper 28 for rotating the optical disk 4 is rotatably provided on a part of the second subchassis 6 by a rotary motor which is a part of an access mechanism. However, when the clamper 28 is provided in the fixed second sub-chassis 6 in a loosely fitted state in this manner, the optical disc can be mounted without newly providing a means for holding and moving the clamper 28. Become. The invention according to claim 8 is a part of the tray,
A member (see 7c in FIG. 14) that engages with the opening on the front surface of the drive when the disc is ejected and closes the opening is provided. Tray 7 even when the tray is ejected
The opening can be closed by the rear door portion 7c, and the reliability can be improved.

FIG. 9 shows the invention according to claim 9, that is, the invention in which the tray 7 is housed to form the closed space 8 regardless of the presence or absence of an optical disk when a certain time elapses during tray ejection. 1 is a diagram for explaining an embodiment, in which 35 is a tray detector, 36 is a drive controller, and after the tray detector 35 detects that the tray 7 is in an ejecting state, When a timer provided therein counts a certain time, the tray drive motor 20 is driven, and the rack 7 is driven via the gear 12 as described with reference to FIG.
b is driven and the tray 7 is pulled in.

FIG. 10 shows the first subchassis 2 and the second subchassis 6 when the closed space 8 is formed by a part of the tray 7, the second subchassis 6, and the first subchassis 2. FIG. 3 is a diagram showing a configuration of a joint portion with the sub-chassis 6, in which one of the sub-chassis is provided with a convex portion and the other concave portion, and the convex portion and the concave portion are engaged with each other. By doing so, the gap can be reduced as much as possible, and a more reliable sealed space can be formed.

In FIG. 11, a cushioning or elastic member is interposed in the uneven joint portion shown in FIG. 10 to further ensure the sealed space formed by the first sub-chassis 2 and the second sub-chassis 6. In FIG.
FIG. 11A is an enlarged view of a portion corresponding to the XI portion of FIG. 10, and FIG. 11B shows cushioning or elastic members 25a and 25b mounted on the convex portion of the second subchassis 6. It is a figure. In the case of the illustrated example, since the joint portion of the second sub-chassis 6 is formed to be convex, these buffer or elastic members 25
a and 25b are formed in an annular shape so as to be mounted inside and outside the convex portion, and the cushioning or elastic member 25a mounted inside is a cushioning or elastic member 25b mounted outside.
It is made smaller. After the buffering or elastic members 25a and 25b thus formed are mounted on the inner and outer surfaces of the convex surface of the joining portion, the first sub-chassis 2 and the second sub-chassis 6 are joined, and the joining shown in FIG. In comparison with the above, it is possible to more reliably form the closed space 8 and it is possible to more effectively prevent dust from entering the closed space.

FIG. 12 is a view for explaining an embodiment of the invention described in claim 10. As shown in the figure, an opening 22a is partially formed inside the frame body 1 constituting the housing. The first sub-chassis 22 is fixedly provided, and the second sub-chassis 2 is provided inside the first sub-chassis 22.
3 is provided so as to be able to move up and down, and data is recorded on the optical disc 4 through the vibration isolation mount 3 on the second sub-chassis 23,
Alternatively, the main chassis 5 to which the access mechanism for reproducing the data recorded on the optical disc 4 is fixed is provided, and when the tray 7 is inserted, a part 7 of the tray 7 is inserted.
the opening 22a of the first sub-chassis 22 by a
Is closed, and the second sub-chassis 23 is sealed in the first sub-chassis 22. Note that FIG.
2 (a) is a diagram showing a state before the tray 7 is inserted,
FIG. 12B is a diagram showing a state in which the tray 7 is inserted and the opening 22a of the first sub-chassis 22 is closed by a part 7a of the tray 7, and FIG. The state where the chassis 23 is raised and the optical disk 4 is chucked by the spindle motor 21 is shown.

FIG. 13 is a diagram for explaining an embodiment of the invention described in claim 11. In this embodiment, the embodiment shown in FIG. 12 raises the second sub-chassis 23. Instead of this, the second sub-chassis 23 is rotated around the rotation center 29, so that the optical disk 4 is chucked by the spindle motor 21. That is, FIG. 13A is a diagram showing a state before the tray 7 is inserted, and FIG.
Shows a state in which the tray 7 is inserted and the opening 22a of the first sub-chassis 22 is closed by a part 7a of the tray 7. FIG. 13 (c) shows the second sub-chassis 23.
Shows a state in which the optical disk 4 is rotated about the rotation center 29 and the optical disk 4 is chucked by the spindle motor 21.

FIG. 14 is a diagram for explaining an embodiment of the invention described in claim 12, which is the tray 7
A rear door 7c for closing the opening 22a of the first sub-chassis 22 at the time of ejecting the optical disc is provided in a part of the rear part of the rear sub door 7c.
The opening portion 22a of the first sub-chassis 22 is closed by the above so as to seal the inside of the first sub-chassis 22. This rear door 7c is applied to the optical disk drive device of the type shown in FIG. 1 as described in the invention of claim 8, and the opening formed by the first sub-chassis 2 and the second sub-chassis 6 is applied. The present invention is also applicable to other parts, and further to other embodiments described later, for example, an optical disk drive device in which a housing and a sub-chassis are the same or part of which is common. The opening at the front of the drive device is set to the rear door 7
It can be closed by c.

When the first sub-chassis 22 is fixedly attached to the frame body 1 forming the housing, the first sub-chassis 22 and the frame body 1 are the same or the front face of the drive. It will be easily understood that the panel portions may be the same, or the frame body 1 and the drive panel forming the casing with the first sub-chassis 22 may be the same (claim 13).

FIG. 15 is a diagram for explaining one embodiment of the invention as set forth in claim 14, which is the lower surface of the second sub-chassis 2 in the optical disk drive device shown in FIG. An opening 2'is provided, and the opening 2'is closed by a circuit board 37. Therefore, a mechanical unit, for example, the flexible cable 38 from the spindle motor 21, the pickup actuator 27, etc.
The connector 39 provided on the circuit board 37 is used to connect to an external electric circuit. In this case, it is necessary to newly provide a hole for inserting a flexible portion in the first sub-chassis 2. Therefore, there is no possibility that dust will enter the enclosed space in which the tray 7 is housed.

FIG. 16 is a diagram for explaining one embodiment of the invention described in claim 15. This embodiment is the same as the second subchassis 23 in the drive device shown in FIG.
Of the second sub-chassis 23, 22 on the lower surface of the first sub-chassis 22 while providing an opening 23 ′ on the lower surface of the first sub-chassis 22. The circuit board 37 for closing the openings 23 ', 22' of the above is provided, which allows the flexible connection of the spindle motor 28, the pick actuator 27, etc. to an external electric circuit as in the embodiment shown in FIG. This eliminates the need to provide a hole for use.

[0033]

As is apparent from the above description, the present invention has the following effects. Effect corresponding to claim 1: Since the access mechanism portion, which is weak against dust inside the optical disk drive device, can be protected in the sealed space, reliability is improved. Effect corresponding to Claim 2: Normally, grease and dust of the gear are attached to the lifting drive unit and the lifting unit, but it is possible to prevent the scattering of these from entering the inside of the optical drive device and improve the reliability. To do. Effect corresponding to claim 3: Conventionally, there is a notch in the tray portion, and the disc information surface is exposed when viewed from the back side of the tray until the optical disc is placed on the tray and inserted, and it is driven during insertion. In rare cases, grease or the like scattered from the part adheres to the optical disk, but by attaching a shutter to close the notch, such adhesion of grease or the like can be prevented. Effects corresponding to claims 4 and 11: Since the closed space is formed by rotating the first sub-chassis 2, accurate positioning can be performed with a simple mechanism and more complete sealing can be achieved. Effect corresponding to claim 5: Since the main chassis is fixed until the disc is mounted, it is not necessary to take an extra clearance space and damage due to impact can be prevented. Effect corresponding to claim 6: Similar to the invention of claim 2, the optical disk can be protected from grease, gear residue, etc. generated from the pull-in drive section. Effect corresponding to claim 7: Since the clamper is provided on the fixed sub-chassis in a loosely fitted state, it is possible to mount the disk without newly providing a means for holding and moving the clamper. Effects corresponding to claims 8 and 12: Even in the case of being most protected from dust (opened state in which the tray is discharged), the rear door of the tray prevents the opening, so that reliability is improved. Effect corresponding to claim 9: Since the most dangerous condition for dust can be suppressed in a short time, reliability is improved. Effect corresponding to claim 10: Since the first sub-chassis forming the closed space can be integrally formed without using a splice, a higher dustproof effect can be obtained. Generally, the invention of claim 1 is suitable for low cost because the number of parts is small, and the invention of claim 10 is suitable for downsizing because the moving member is small. Effect corresponding to claim 13: By making the housing and the front panel the same, it is possible to reduce the cost and size. Effects corresponding to claims 14 and 15: Conventionally, it was easy for dust to enter from the wiring portion to the circuit portion, but since the wiring can be performed outside the sealed space via the circuit board, the reliability is further improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram for explaining an embodiment of the invention described in claim 1.

FIG. 2 is a configuration diagram for explaining an embodiment of the invention described in claim 2;

FIG. 3 is a configuration diagram for explaining an embodiment of the invention described in claim 3;

FIG. 4 is a configuration diagram for explaining an embodiment of the invention described in claim 3;

5 is a configuration diagram for explaining an embodiment of the invention described in claim 4. FIG.

FIG. 6 is a configuration diagram for explaining an embodiment of the invention described in claim 4;

FIG. 7 is a configuration diagram for explaining an embodiment of the invention described in claim 5;

FIG. 8 is a configuration diagram for explaining an embodiment of the invention described in claim 6;

FIG. 9 is a configuration diagram for explaining an embodiment of the invention described in claim 9;

FIG. 10 is a diagram showing a joining structure of a first sub-chassis and a second sub-chassis.

FIG. 11 is a diagram showing another example of the joining structure of the first sub-chassis and the second sub-chassis.

FIG. 12 is a configuration diagram for explaining an embodiment of the invention described in claim 10;

FIG. 13 is a configuration diagram for explaining an embodiment of the invention described in claim 11;

FIG. 14 is a configuration diagram for explaining an embodiment of the invention described in claim 12;

FIG. 15 is a configuration diagram for explaining an embodiment of the invention described in claim 14;

FIG. 16 is a configuration diagram for explaining an embodiment of the invention described in claim 15;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Case or frame, 2 ... 1st subchassis, 3 ... Antivibration mount, 4 ... Optical disk, 5 ... Main chassis, 6 ...
Second sub-chassis, 7 ... tray, 8 ... closed space, 9 ...
Motor, 10 ... Slide plate, 12 (12a, 12b, 1
2c) ... gear, 13 ... screw, 14 ... shutter, 16 ...
Spring, 17 ... Shaft, 18 ... Lever, 19 ... Shaft, 19a ... E-ring, 20 ... Motor, 21 ... Spindle motor, 22 ... First sub-chassis, 23 ... Second sub-chassis, 24 ... Lock plate, 27 … Pickup actuator, 28… Clamper.

Claims (15)

[Claims] 1. A frame forming a housing, a first sub-chassis supported by the frame so as to be capable of moving up and down, a frame fixed to the frame, and when the first sub-chassis is raised, A second sub-chassis that engages with the first sub-chassis, a main chassis mounted on the first sub-chassis via an anti-vibration mount, and an optical disc are detachably mounted, and the optical disc is mounted. When the optical disk is inserted, data is recorded on the optical disk or data on the optical disk is recorded by an access mechanism provided on the main chassis when the optical disk is inserted. In an optical disk drive device for reproducing, when the tray is inserted into the housing, a part of the tray, the raised first sub-chassis, and the front of the first sub-chassis are engaged. An optical disk drive device characterized in that a sealed space is constituted by the second sub-chassis. 2. The optical disk drive device according to claim 1, wherein the raising / lowering means and the raising / lowering drive section of the first sub-chassis are provided outside the hermetically sealed space. 3. The optical disk drive device according to claim 1, further comprising a shutter that opens and closes a notch provided in a part of the tray. 4. The center of rotation is provided in a part of the first sub-chassis, and the first sub-chassis is rotated with respect to the second sub-chassis. The optical disk drive device described. 5. A fixing mechanism for fixing the main chassis, wherein the main chassis is fixed to the first sub-chassis when the optical disc is ejected, and the main chassis is fixed to the first chassis when the optical disc is mounted. The optical disc drive device according to claim 1, wherein the optical disc drive device is released from the fixed state. 6. The optical disk drive device according to claim 1, wherein the retracting means and the retracting drive portion of the tray are provided outside the closed space. 7. The clamper is rotatably provided in a part of the second sub-chassis, and the optical disk is fixed to a rotary motor of a part of the access mechanism section by the clamper. The optical disc drive device according to claim 1. 8. The optical disk drive device according to claim 1, wherein a part of the tray has a member that engages with an opening on the front surface of the drive and closes the opening when the optical disk is ejected. 9. The optical disk drive device according to claim 1, wherein the tray is accommodated to form a hermetically sealed space regardless of the presence or absence of an optical disk when a predetermined time has elapsed during the ejection of the tray. 10. A frame body forming an enclosure, a first sub-chassis fixedly attached to the frame body and partially having an opening, and capable of moving up and down in the first sub-chassis. And a second subchassis provided on the second subchassis, and an access mechanism unit that is attached to the second subchassis via an anti-vibration mount and that records data on the optical disc or reproduces data on the optical disc is fixed. The main chassis,
And a tray into which the optical disc is detachably mounted and which can be inserted into and removed from the housing. When the optical disc is mounted, the opening of the first sub-chassis is closed by a part of the tray. An optical disk drive device characterized by being peeled off to form a closed space. 11. A rotation center is provided in a part of the second sub-chassis, and the second sub-chassis is rotated around the rotation center to engage with the first sub-chassis. The optical disk drive device according to claim 10, wherein the optical disk drive device is configured as described above. 12. The optical disk drive device according to claim 10, wherein a part of the tray has a member that engages with the opening of the first sub-chassis and closes the opening when the optical disk is ejected. . 13. A drive front panel is common between the first sub-chassis and the frame body forming the housing, or the drive front panel is shared by the frame body forming the first sub-chassis and the housing. 11. The optical disk drive device according to claim 10. 14. The optical disk drive device according to claim 1, wherein an opening is provided on the bottom surface of the first sub-chassis, and the opening is closed by a circuit board. 15. The optical disk drive device according to claim 10, wherein openings are provided in the bottom surfaces of the second sub-chassis and the first sub-chassis, and the openings are closed by a circuit board.