JPH07254263A - Disk device - Google Patents

Abstract

(57) [Summary] [Object] It is an object of the present invention to provide a disk device which is constructed so that a tray can be manually put in and taken out, and which has a reduced thickness. A CD-ROM drive device 1 includes a turntable 6 for rotating a disc, a pickup 5 for detecting information recorded on the disc, a base 22 for supporting the turntable 6 and the pickup 5, and a base 22.
Mounted on the tray 12, and supporting the base 12 and the tray 12 that moves to the disk mounting position in the housing or the disk replacement position pulled out of the housing by the manual operation, and supports the tray 12 via the base 22. A sub-chassis 3 slidably provided in the sub-chassis 3, and a vibration-proof member 55 provided between the sub-chassis 3 and the base 22 to elastically support the base 22 and the tray 12 to absorb vibration.
And.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device, and more particularly to a disk device incorporated in a notebook personal computer or the like as a CD-ROM drive device.

[0002]

2. Description of the Related Art For example, a compact disc (diameter 12 cm) reproduced by a laser pickup is used as a storage medium for storing information such as a database and software.
Or 8 cm) is being used. Therefore, a built-in CD-ROM drive device that is built in the housing is being developed so that it can be incorporated in a miniaturized notebook personal computer or the like.

In the conventional apparatus, the tray on which the disc is placed is driven by a motor, and when the tray moves out of the housing, the disc is placed on the turntable in the tray.
The tray is returned to the housing by the driving force of the motor again. However, in the method of driving the tray with the motor as described above, a motor for driving the tray and a transmission mechanism for transmitting the driving force to the tray are required, and it is difficult to make the apparatus smaller and thinner by that amount. , Could not be built into the case of a laptop computer.

For this reason, a disk device is being developed in which the above-mentioned motor and transmission mechanism are unnecessary and the tray is manually moved to a disk mounting position inside the housing or a disk exchange position outside the housing.

[0005]

In the apparatus configured to move the tray by manual operation, the tray is supported by the sub chassis, and the tray is slidably guided by the guide rails engaging with both sides of the sub chassis. It is like this. However, in the configuration in which the turntable and the pickup are provided integrally with the tray, in order to prevent vibration from propagating to the turntable and the pickup which are precision parts, the base and the sub-chassis supporting the turntable and the pickup are prevented. A vibration damping member made of rubber that absorbs vibration is interposed therebetween.

However, in the above device, since the tray is directly fixed to the sub-chassis, when vibration is generated, it is propagated to the tray, and the turntable and the pickup of the base supported via the vibration isolating member are combined with the tray. Swing with different cycles. Therefore, when a relatively large vibration is generated and the vibration damping member is elastically deformed, the turntable and the pickup may swing and the disc clamped on the turntable may come into contact with the tray.

Further, when the tray is at the disc mounting position, it is necessary to sufficiently separate the top plate from the upper end of the turntable in order to prevent the turntable that swings when vibration occurs from contacting the top plate that covers the chassis. Therefore, the thinning of the device is limited accordingly. Therefore, an object of the present invention is to provide a disk device that solves the above problems.

[0008]

According to a first aspect of the present invention, there is provided a turntable for rotating a disk as a recording medium,
A pickup that detects information recorded on the disc, a base that supports the turntable and the pickup, and a disc mounting position that is attached to the base and is manually operated to the disc mounting position inside the casing or the disc exchange position pulled out of the casing. A sub-chassis that supports the tray that moves and a base that supports the tray via the base, and that is slidably provided on a chassis, and is provided between the sub-chassis and the base. And a vibration damping member that elastically supports the tray and absorbs vibrations.

According to a second aspect of the present invention, when the tray is at the disc mounting position, an opening is provided in a portion of the top plate that covers the chassis, the portion facing the turntable, and the opening is thinner than the top plate. It is characterized by being closed by a lid.

[0010]

According to the first aspect of the present invention, since the tray is fixed to the base and the vibration isolating member for elastically supporting the base and the tray to absorb the vibration is provided between the sub-chassis and the base, the turn is prevented. Since not only the base supporting the table and the pickup but also the tray is elastically supported, the disc clamped on the turntable is prevented from coming into contact with the tray.

Further, according to the second aspect, when the tray is at the disc mounting position, an opening is provided in a portion facing the top plate facing the turntable, and the opening is closed by a lid thinner than the top plate. As a result, the distance between the top plate and the turntable can be reduced, and the device can be made thinner.

[0012]

1 to 4 show an embodiment of a disk device according to the present invention. In each figure, CD-as a disk device
The ROM drive device 1 (hereinafter referred to as "device") is a built-in device that is built in the housing of a notebook computer (not shown).

This device 1 generally has a tray 2 for inserting a disk (not shown), a sub-chassis 3 for supporting the tray 2, and a tray sliding mechanism 4 for slidably supporting the tray 2. , An optical pickup unit 5 provided on the sub-chassis 3, and a mounted disc (C
A turntable 6 for rotating the D-ROM), a locking mechanism 7 for locking the tray 2 when the tray 2 moves to the disc exchange position, and a lock for the tray 2 when the tray 2 moves to the disc mounting position. And a lock mechanism 8.

FIG. 1 shows the tray 2 with the top plate 9 shown in FIG. 3 removed.
Shows a state in which the tray has been moved to the disc mounting position housed in the apparatus, and FIG. The tray 2 is formed such that a part of a disk (not shown) protrudes from the tray 2 and has a lateral width smaller than the outer diameter of the disk, and slides in the A and B directions by a manual operation. The disc replacement position or the disc mounting position is reached.

Therefore, the apparatus 1 has trays A, B
Since a driving mechanism (composed of a motor, a transmission mechanism, etc.) for driving in the direction is not provided and the number of parts is reduced accordingly, the size and thickness are reduced. Reference numeral 10 denotes a chassis, which includes a storage portion 10a for storing the above-mentioned mechanisms, and a cover portion 10b for covering the disc protruding from the tray 2 so as to cover the disc below.
A space below the cover 9b is a space, for example, the device 1
Other devices in the notebook computer to which the is assembled will be installed.

A front bezel 11 is fixed to the front end of the tray 2 and slides integrally with the tray 2 in the A and B directions. A switch button 12 for unlocking the lock mechanism 8 when the tray 2 is pulled out is provided at the center of the front bezel 11. Therefore, when the switch button 12 is turned on in the state shown in FIG. 1, the front bezel 11 projects forward (direction A) by about 5 to 10 mm to facilitate the pulling operation of the tray 2, as described later.

As shown in FIGS. 3 and 5, the tray 2 is
A disk facing surface 2a forming a space for facing the disk, an opening 2b for a pickup and a turntable formed in the disk facing surface 2a, and a finger for taking out the disk placed on the disk facing surface 2a. And an arc-shaped opening 2c for ejecting the disc.

The disk facing surface 2a has a width dimension smaller than the disk outer diameter so as to cover the housing portion 10a of the chassis 10, and is formed so as to cover an area of about ⅔ of the disk. As a result, the device 1 can be downsized. As shown in FIGS. 3 and 6, the sub-chassis 3 is provided on the right side of the quadrangular frame 3a having the tray 2 mounted and fixed and having openings for a pickup and a turntable. , And a guide rail pressing member 14 screwed to the left side surface 3c of the frame 3a. The guide rail pressing member 14 has a pair of pressing portions 14a and 14b protruding above the frame 3a. Also, the frame 3a has
As will be described later, a hooking portion 3d to which a coil spring 47 that biases the ejecting pressing member 47 is hooked, and a vibration isolator 55.
And a screw hole 3e for screwing the base 22 therethrough.

As shown in FIGS. 3, 4 and 7 to 10, the tray sliding mechanism 4 has a pair of guide rail mechanisms 15 and 16 mounted on both sides of the sub chassis 3. The pair of guide rail mechanisms 15 and 16 are respectively fixed to the movable side rail 17 fixed to the bracket 3b of the sub chassis 3, the fixed side rail 18 extending parallel to the movable side rail 17, and the movable side rail 17. And a slide rail 19 which is interposed between the side rail 18 and slidably engaged with both members.

Movable side rail 17 and fixed side rail 18
Has a C-shaped cross section and has edges 17a and 18a bent inward. A rack 17b extending in the longitudinal direction is provided on the lower edge 17a of the movable rail 17. Further, the upper edge 1 of the fixed side rail 18
8a is provided with a rack 18b extending in the longitudinal direction.

The slide rail 19 has an H-shaped cross section, and has a first track 19a with which the edge 17a of the movable rail 17 engages, and a first track 19a with which the edge 18a of the fixed rail 18 engages. Second orbit 19b, first orbit 19a and second
Groove 19c formed between the track 19b and the track 19b.
A pinion 20 is rotatably housed at an intermediate position in the longitudinal direction of the groove 19c of the slide rail 19. The upper and lower parts of the pinion 20 are respectively on the movable side rail 1
7, and is engaged with the racks 17b and 18b of the fixed side rail 18.

In the guide rail mechanism 15, the movable side rail 17 is screwed to the side wall 10c of the chassis 10 and the fixed side rail 18 is screwed to the bracket 3b of the sub chassis 3 which supports the tray 2. Therefore,
When the tray 2 is pulled out, the fixed side rail 18 slides in the A direction with respect to the slide rail 19 and the pinion 20.
To rotate. As the pinion 20 rotates, the slide rail 19 slides in the A direction with respect to the movable rail 17.

Further, as shown in FIG. 11, the movable side rail 17 of the guide rail mechanism 16 has the pressing portions 14a, 1a of the guide rail pressing member 14 provided on the sub-chassis 3.
It is screwed to 4b. The pressing portions 14a and 14b
Are bent into a crank shape so as to function as leaf springs, and bend outward when fastened to the movable side rail 17. Therefore, the movable side rail 17 has the pressing portion 1
Due to the elastic restoring force of 4a and 14b, the tray sliding direction (A,
It is pressed in the X direction, which is orthogonal to the (B direction), and rattling in the lateral direction is prevented.

As shown in FIG. 8A, the movable side rail 1
When 7 is pressed in the X direction, a first gap S1 is formed between the movable side rail 17 and the fixed side rail 18, and between the fixed side rail 18 and the second track 19b of the slide rail 19 is formed. The second gap S2 is formed, and the third gap S3 is formed between the movable side rail 17 and the first track 19a of the slide rail 19.

Therefore, the above-described first to third gaps S are provided between the rails 17 to 19 of the guide rail mechanism 16.
Since 1 to S3 are formed, the sliding resistance between the rails 17 to 19 is reduced. Therefore, the guide rail mechanism 16 can slidably support the tray 2 with low friction, and the movable side rail 17 is pushed in the X direction to slide the tray 2 in a state without rattling in the lateral direction. You can

Further, the fixed side rail 18 and the movable side rail 17
The slide rail 19 interposed between the fixed side rail 1 and
8 and the movable side rail 17 are slidably engaged, so that the movable side rail 17 can be moved with a stroke twice as much as the movement amount of the slide rail 19. Therefore, the guide rail mechanisms 15 and 16 can extend the stroke for guiding the tray 2 from the disk mounting position inside the housing to the disk exchange position outside the housing, and the movable side rail 17 is provided.
By pushing in the X direction, rattling of the tray 2 in the lateral direction can be prevented and the tray 2 can be pulled out smoothly.

Therefore, since the vibration due to the sliding movement of the tray does not propagate to the turntable 6 and the pickup section 5 provided on the tray 2, the deterioration of the detection accuracy when detecting the information recorded on the disk recording surface is prevented. It Thus, the tray 2 is slidably guided by the guide rail mechanisms 15 and 16 interposed between both sides of the sub-chassis 3 and the side walls 10c and 10d of the chassis 10, and the tray 2 is placed at the disc mounting position. There are rails 17-
19 is housed in the chassis 10 as shown in FIG.

Then, when the tray 2 is pulled out in the A direction and moved to the disc exchange position, the slide rail 19 slides in the A direction by the distance L with respect to the fixed side rail 18 as shown in FIG. The side rail 17 slides in the A direction by a distance L with respect to the slide rail 19.
Further, as shown in FIGS. 2, 3 and 12 and 13, a drive unit 21 having a pickup unit 5 and a turntable 6 is provided above the sub chassis 3.
The drive unit 21 includes a base 22 attached to the upper portion of the sub chassis 3, a pickup unit 5 attached to the base 22, a pickup drive unit 23 for moving the pickup unit 5 in the disc radial direction, and a base 2
2 and the turntable 6 attached to it.

Further, the tray 2 is attached to the upper portion of the base 22 of the drive unit 21. A vibration damping member 55 that absorbs vibration is provided between the sub chassis 3 and the base 22. Therefore, the base 22
The vibration of the pickup unit 5 and the turntable 6 attached to the is absorbed by the vibration isolating member 55, so that the influence of the vibration during the sliding operation of the tray 2 is mitigated.

The pickup driving section 23 includes a pickup driving motor 24 provided on the lower surface of the base 22, a transmission mechanism 25 including a plurality of gears, a lead screw 26 driven via the transmission mechanism 25, and a lead screw 26.
And a guide shaft 27 that extends in parallel with and guides the pickup unit 5. Therefore, the pickup portion 5 is provided so as to face the opening 22a of the base 22 extending in the disc radial direction, and both sides thereof are slidably guided by the lead screw 26 and the guide shaft 27.

Since the pickup portion 5 has the engaging portion 28 that engages with the thread portion of the lead screw 26, when the lead screw 26 is rotationally driven by the rotation of the pickup driving motor 24, it moves in the disc radial direction. To do. The turntable 6 has a turntable driving motor 29 in the lower part thereof. The turntable drive motor 29 drives the disc clamped on the turntable 6 at a constant rotation speed when the tray 2 reaches a predetermined mounting position in the apparatus 1.

As shown in FIG. 14, the base 22 has an opening 22a extending in the disk radial direction so that the pickup portion 5 and the turntable 6 face each other. As shown in FIG. 15, the turntable mounting portion 2 on which the turntable 6 is mounted is mounted on the lower surface of the base 22.
2b and a pickup driving unit mounting portion 2 to which a pickup driving unit 23 for driving the pickup unit 5 is mounted
2c are provided.

In addition, at three locations on the peripheral edge of the base 22,
Mounting portions 22d to 22f for mounting the base 22 on the sub chassis 3 are provided. Each mounting portion 22d-2
Each of the 2f is formed in a U shape so that the vibration isolator 55 can be mounted from the side, and is thinner than the surroundings.
As shown in FIG. 16, the anti-vibration member 55 is made of elastic rubber and has a constricted portion 55 that fits into the mounting portions 22d to 22f.
a, a first damper 55b formed above the constricted portion 55a, and a second damper 55b formed below the constricted portion 55a.
And the damper 55c are integrally formed. Further, the anti-vibration member 55 has a through hole 55d in the center when viewed from above,
It is formed in a ring shape.

The first damper 55b and the second damper 55c have an air spring structure in which air chambers 55e and 55f are formed in close contact with the outer periphery of the screw 56 inserted into the through hole 55d. . Therefore, the vibration isolator 55 fits the constricted portion 55a from the side of each of the mounting portions 22d to 22f, and then inserts the male screw 56a of the screw 56 into the through hole 55d while screwing it into the screw hole 3e of the sub chassis 3. To combine. Thus, the base 22 is supported by the sub chassis 3 via the vibration isolator 55.

The screws 56 are the through holes 55 of the vibration isolator 55.
Since it is inserted through d, it does not contact the base 22,
2 interference is prevented. Further, the head portion 56a of the screw 56 fixes each mounting portion 22d to 22f of the base 22 via the first damper 55b. Therefore, the base 22
Irrespective of the direction of vibration, the first damper 55b and the second damper 55b
The damper 55c is elastically supported by elastic deformation and is provided so as to absorb vibration. Therefore,
The pickup unit 5 and the turntable 6 attached to the base 22 do not have to be affected by vibration even when vibration occurs during the sliding operation of the tray 2, and the decrease in detection accuracy due to vibration is prevented.

However, when a relatively large vibration is generated, the vibration isolating member 55 is largely elastically deformed, so that the base 22 is swung. Since the tray 2 is directly fixed to the base 22, the tray 2 swings together with the base 22 when the vibration damping member 55 is largely elastically deformed. Therefore, the clamped disc of the turntable 6 swings together with the tray 2 and is prevented from coming into contact with the tray 2. That is, when the anti-vibration member 55 is elastically deformed, the disc is prevented from coming into contact with and damaging the tray 2, so that the distance between the disc and the tray 2 is conventionally 5 mm in consideration of the swing and warpage of the disc. In the present invention, as shown in FIG. 17, the gap L between the disc D _A clamped on the turntable 6 and the disc facing surface 2 a of the tray 2 is set to the level L.
_A can be reduced to about 1 mm, and as a result, the device can be made thin.

As shown in FIGS. 17 to 19, the tray 2
An opening 9a is formed in a portion of the top plate 9 which the upper portion of the turntable 6 faces when the disc is in the disc mounting position. The plate thickness t _a of the top plate 9 (the thickness is about 1
It is closed by a lid 57 that is thinner than mm. The plate thickness t _{b of the} lid 57 is about 0.2 mm, which is about ⅕ of the plate thickness t _a of the top plate 9.

Therefore, the top plate 9 can be lowered to a position where the lid 57 does not come into contact with the turntable 6, so that the device can be thinned accordingly. When the tray 2 slides in the direction A, the upper portion of the turntable 6 makes sliding contact with the lower surface of the top plate 9. The lid 57 is placed on a mounting portion 9b provided around the opening 9a of the top plate 9, and is fitted to three bosses 9c protruding from the mounting portion 9b, and the upper end of the boss 9c is caulked. . That is, the lid 57 is formed in the same shape corresponding to the opening 9a, and holes 57a into which the boss 9c fits are formed at three positions in the peripheral portion thereof.

Since the mounting portion 9b of the top plate 9 is lowered by one step, the upper surface of the lid 57 is substantially level with the upper surface of the top plate 9. In addition, a reinforcing rib 57b is formed in a U-shape on the lid 57, and an arc-shaped projection 57c that slidably contacts the upper portion of the turntable 6 is formed at an end portion in the A direction. Therefore, when the tray 2 slides in the direction A, the upper portion of the turntable 6 is pushed downward while slidingly contacting the inclined projection 57c of the lid 57 as shown in FIG.

At this time, the first damper 55b and the second damper 55c of the vibration isolating member 55 are vertically compressed to allow the turntable 6 to descend. Therefore, the turntable 6 slides the tray 2 in the direction A, smoothly contacts the lower surface of the top plate 9, and reduces friction on the lower surface of the top plate 9. As shown in FIGS. 7 and 21, the locking mechanism 7 is a mechanism for locking the tray 2 when the tray 2 moves to the disc exchange position shown in FIG. The locking mechanism 7 is provided on the tray 2, and is a first locking that locks the tray 2 by engaging the locking hole 30 formed in the chassis 10 when the tray 2 moves to the disc replacement position. It comprises a member 31 and a second locking member 33 which is provided on the side wall 10c of the chassis 10 and which locks the tray 2 by engaging with the recess of the tray 2 when the tray 2 moves to the disc exchange position.

As shown in FIG. 22, the first locking member 31 is provided at the end of the bracket 3b of the subchassis 3, and the rivet 3 is attached to the lower surface 3d of the end of the bracket 3b.
It is composed of a leaf spring 31a fastened by No. 4 and an engaging portion 31b provided at the tip of the leaf spring 31a. Locking part 31b
Is a sliding contact surface 31c for slidingly contacting the chassis 10, and the chassis 1
The locking surface 31d is locked in the locking hole 30 of 0, and the inclined surface 31e is used when the locking portion 31b is separated from the locking hole 30.

Therefore, before the tray 2 is moved to the disc exchange position, as shown in FIG. 22 (A), in the first locking member 31, the sliding contact surface 31c of the locking portion 31b is the chassis 10.
And the leaf spring 31a is bent in the C direction.
That is, the sliding contact surface 31c of the locking portion 31b is caused by the leaf spring 31a.
Is pressed against the chassis 10, the reaction force of the leaf spring 31a acts on the tray 2. Therefore, tray 2
The vertical spring is prevented by the spring force of the leaf spring 31a.

Since the locking portion 31b is made of synthetic resin, the frictional resistance is relatively small. Therefore, the sliding contact surface 31
Friction at the time of c slidingly contacting the chassis 10 is reduced, and the movement of the tray 2 is not hindered. Then, when the tray 2 is moved to the disc exchange position, the locking portion 31b is displaced in the D direction as shown in FIG.
No. 0 locking hole 30 and the locking surface 31d has a locking hole 3
It abuts the edge of 0. As a result, the tray 2 is restricted from moving in the A direction.

When the tray 2 moves in the B direction, the inclined surface 31e of the locking portion 31b rides on the edge portion of the locking hole 30 and is displaced in the C direction to be in the unlocked state. Therefore, the tray 2 is restricted from moving in the A direction only at the disc exchange position by the engagement of the first locking member 31 and the locking hole 30, and is allowed to move in the B direction.

As shown in FIG. 23, the second locking member 33
Is composed of a roller 35 rolling on the side wall 2e of the tray 2 and a roller support member 36 rotatably supporting the roller 35. The roller 35 moves the tray 2 to move the tray 2.
When the tray 2 moves to the disk mounting position or the disk exchange position, it fits into the recesses 2f and 2g provided in the side wall 2e and restricts the movement of the tray 2 while rolling the side wall 2e.

One end 36a of the roller support member 36 is fastened to the side wall 10d of the chassis 10 by a rivet 37, and the roller 35 is supported at the tip 36c of the arm portion 36b. The arm portion 36b of the roller support member 36 functions as a leaf spring that presses the roller 35 in the E direction. That is,
The roller support member 36 rotatably supports the roller 35, and also functions as a leaf spring that presses the roller 35 against the side wall 2e of the tray 2. When moved to the position, the pressing force of the roller supporting member 36 causes the concave portion 2 to move.
The tray 2 is locked by fitting with f and 2g.

As shown in FIGS. 7 and 24, the lock mechanism 8 is provided on the mounting portion 45a of the frame 3a of the sub-chassis 3 and is locked by the locking roller 38 provided on the bottom 10f of the chassis 10. And a solenoid 40 provided on the mounting portion 45b of the frame 3a of the sub-chassis 3 for rotating the lock lever 39 to the locked position or the unlocked position.

The lock lever 39 is, as shown in an enlarged view in FIG. 24, a shaft 41 that stands upright on the frame 3a of the sub-chassis 3.
Arm 39c having at its tip a bearing 39a that fits in the end and a claw 39b that engages with the locking roller 38 of the chassis 10.
And a connecting portion arm 39d connected to the plunger 43 driven by the solenoid 42. Solenoid 4
When the switch button 12 of the front bezel 11 described above is turned on, No. 2 is excited and attracts the plunger 43. The end of the plunger 43 penetrates and is connected to a hole 39e formed in the connecting arm 39d of the lock lever 39.

Further, the plunger 43 pulls the connecting portion arm 39d by the electromagnetic force of the solenoid 42. Therefore,
The lock lever 39 is biased in the G direction by a torsion spring (not shown), and this spring force causes the claw portion 39 to move.
The lock roller 38 is brought into engagement with the lock roller 38b to be locked. Then, when the plunger 43 is attracted by the electromagnetic force of the solenoid 42, the plunger 43 is rotated about the shaft 41 in the H direction and the claw portion 3 is rotated.
9b is separated from the locking roller 38 and is in the unlocked state.

As shown in FIG. 21, the sub chassis 3
An ejecting pressing member 48 biased in the B direction by a coil spring 47 is provided on the mounting portion 46 of the frame 3a. The ejecting pressing member 48 has a long hole 48a that fits into a pin 49 standing upright from the frame 3a of the subchassis 3, and is slidably mounted in the A and B directions. One end of the coil spring 47 is hooked on the hooking pin 3d of the sub-chassis 3, and the other end is hooked on the hooking portion 48b of the ejecting pressing member 48.

Therefore, when the lock by the lock mechanism 8 is released, the ejecting pressing member 48 presses the rear portion 10g of the chassis 10 by the spring force of the coil spring 47. Due to the reaction, the sub chassis 3 moves in the A direction. As a result, the tray 2 provided on the sub chassis 3
The front bezel 12 moves in the direction of a predetermined distance A from the housing of a laptop computer (not shown), and the operation of pulling out the tray 2 becomes easy. Then, the front bezel 12 is manually A
When it is pulled in the direction, the tray 2 moves to the disc exchange position as shown in FIG.

Further, as shown in FIG. 4, a circuit board 51 for driving and controlling each part of the drive unit 21 is attached to the lower surface of the tray 2. This circuit board 51 is
The drive unit 2 is connected via the flexible cable 52.
1 pickup 5, turntable 6, pickup driving motor 24 and a substrate 53 for external connection. Therefore, the pickup 5, turntable 6, and pickup driving motor 24 perform a predetermined operation according to the control signal output from the circuit board 51.

The flexible cable 52 is interposed in the gap between the sub-chassis 3 and the side wall of the storage portion 10a of the chassis 10 in a U-shape so as to prevent the tray 2 from sliding. It is provided so as not to interfere. Here, the operation of the CD-ROM drive device 1 having the above configuration will be described. As shown in FIGS. 1, 12, and 21, the apparatus 1 before mounting the disc has a tray 2 housed in the apparatus. When the tray 2 is installed in the device, as shown in FIG.
A lock mechanism 8 provided on the sub chassis 3 as shown in FIG.
Lock lever 39 is locked to the locking roller 38 of the chassis 10 and, as shown in FIG.
The roller 35 of No. 3 is fitted in the recess 2f of the tray 2,
The tray 2 and the sub-chassis 3 are locked at the mounting position in the device.

When the switch button 12 of the front bezel 11 is turned on, the plunger 43 is attracted by the electromagnetic force of the solenoid 42, and the lock lever 39 rotates about the shaft 41 in the H direction to move the claw portion 39b. The lock roller 38 is separated from the locking roller 38 and is in the unlocked state. In this way, when the lock of the sub chassis 3 by the lock mechanism 8 is released, the ejecting pressing member 48 shown in FIG.
The rear portion 10g of the chassis 10 is pressed by the spring force of.
Due to the reaction, the sub chassis 3 and the tray 2 move in the A direction.

The roller 35 of the locking member 33 is fitted in the recess 2f of the tray 2, but as shown in FIG.
The ejecting pressing member 48 is the rear portion 1 of the chassis 10.
When 0g is pressed, the inclined portion of the concave portion 2f rolls and comes into sliding contact with the side wall 2e of the tray 2. Therefore, the sub-chassis 3 and the tray 2 move in the direction A for a predetermined distance to a position where the front bezel 12 projects from the housing of the notebook computer (not shown) and the operation of pulling out the tray 2 is easy. And
When the front bezel 12 is manually pulled in the A direction,
As shown in 0, the pair of guide rail mechanisms 15, 16
The movable rail 17 slides in the A direction along the slide rail 19, and the slide rail 19 slides in the A direction along the fixed rail 18.

When the tray 2 slides in the direction A, the upper portion of the turntable 6 is pushed downward while slidingly contacting the inclined projection 57c of the lid 57. At that time, the first damper 55b and the second damper 55c of the vibration isolating member 55 described above.
Is compressed in the vertical direction, so that the turntable 6 smoothly slides on the lower surface of the top plate 9. Furthermore, front bezel 1
When 2 is pulled in the A direction, the sub chassis 3 and the tray 2 slide in the A direction while being guided by the pair of guide rail mechanisms 15 and 16. During the sliding operation in the A direction, the roller 35 of the locking member 33 rolls while being pressed by the side wall 2e of the tray 2, so that the tray 2 is prevented from rattling in the lateral direction and is stable and smooth. Slide.

Further, the guide rail pressing member 1 described above is used.
4 pushes the movable side rail 17 of the guide rail mechanism 15 in the X direction, the rattling of the tray 2 in the lateral direction is prevented, and the tray 2 can be pulled out smoothly. 2 and 2
When the tray 2 is moved to the disc exchange position as shown in FIG. 5, the roller 35 of the locking member 33 is click-fitted into the recess 2g of the tray 2 as shown in FIG. As shown in (B), the locking portion 3 of the locking member 31.
1b is displaced in the D direction and fits into the locking hole 30 of the chassis 10, and the locking surface 31d abuts on the edge of the locking hole 30. As a result, the tray 2 is locked at the disc replacement position and its movement in the A direction is restricted.

Therefore, in the process of pulling the front bezel 12 in the direction A, the roller 35 of the locking member 33 fits into the recess 2g of the tray 2 as described above, so that the tray 2 is clicked.
Will be locked, and the feeling of operation will be good. Therefore, the tray 2 is prevented from being pulled too much in the direction A and the tray 2 is prevented from falling off, or the tray 2 is not stopped before reaching the disc replacement position because the disc replacement position is unknown.

When the tray 2 is locked at the disc exchange position in this way, the disc is clamped on the turntable 6 and then the front bezel 11 is pressed in the B direction. When the front bezel 11 is pressed in the B direction, the roller 35 of the locking member 33 rolls in the concave portion 2g of the tray 2 to reach the side wall 2e, and the locking member 31 causes the inclined surface 3 of the locking portion 31b.
1e rides on the edge portion of the locking hole 30 and is displaced in the C direction to be in the unlocked state.

Therefore, the tray 2 slides in the direction B from the disc exchange position while being guided by the pair of guide rail mechanisms 15 and 16, and returns to the disc mounting position shown in FIGS. 1, 12 and 21. Also at this time, the roller 35 of the locking member 33 rolls while being pressed by the side wall 2e of the tray 2, so that the tray 2 is prevented from rattling in the lateral direction and slides stably and smoothly.

When the tray 2 arrives at the disc mounting position, the roller 35 of the locking member 33 click-fits into the recess 2f of the tray 2, and the lock lever 39 of the lock mechanism 8 locks the chassis 10. The roller 38 is locked. Therefore, it is possible to feel by touch that the tray 2 has arrived at the disc mounting position by a click feeling when the roller 35 of the locking member 33 is fitted into the recess 2f of the tray 2.

The present invention is a CD-type disc as in the above embodiment.
The same applies not only to the ROM drive device, but also to other disk-shaped recording media such as CDs, magnetic disks, magneto-optical disks, and optical disks. Further, the disk device of the present invention has been described as an example in which the disk device is housed in the housing of a notebook computer, but the invention is not limited to this, and other electronic devices can be used as external devices separate from the electronic devices. It can also be applied to a device having the above configuration.

[0063]

As described above, according to claim 1, the tray is fixed to the base, and the base and the tray are elastically supported between the sub-chassis and the base to absorb the vibration. Since the disk is provided, not only the base supporting the turntable and the pickup but also the tray is elastically supported, so that the disc clamped on the turntable is prevented from coming into contact with the tray. Accordingly, the distance between the disc clamped on the turntable and the tray can be reduced, and the device can be made thinner.

According to the second aspect, when the tray is at the disc mounting position, an opening is provided in a portion of the turntable facing the top plate, and the opening is closed by a lid thinner than the top plate. Therefore, the distance between the top plate and the turntable can be made as small as possible, and the device can be thinned accordingly.

[Brief description of drawings]

FIG. 1 is a perspective view of a CD-ROM drive device as an embodiment of a disk device according to the present invention.

FIG. 2 is a perspective view showing a state in which a tray is pulled out.

FIG. 3 is an exploded perspective view of a CD-ROM drive device.

FIG. 4 is an exploded perspective view continued to the lower part of FIG.

FIG. 5 is a plan view of the tray.

FIG. 6 is a diagram of a sub-chassis.

FIG. 7 is a plan view showing a state where both sides of the sub chassis are supported by guide rail mechanisms.

FIG. 8 is a vertical sectional view showing a guide rail mechanism and a pressing member.

FIG. 9 is a side view for explaining the guide rail mechanism when the tray is stored.

FIG. 10 is a side view for explaining the guide rail mechanism when the tray is pulled out.

FIG. 11 is an enlarged view showing a guide rail mechanism and a pressing member.

FIG. 12 is a plan view with a top plate removed.

FIG. 13 is a side view showing a state in which a base and a tray are mounted on the sub chassis.

FIG. 14 is a diagram for explaining the upper surface side of the base.

FIG. 15 is a view for explaining the lower surface side of the base.

FIG. 16 is an enlarged vertical sectional view showing a vibration isolating member interposed between the base and the sub chassis.

FIG. 17 is a vertical cross-sectional view showing a positional relationship between a tray, a turntable, a top plate and a lid.

FIG. 18 is a plan view of a lid that closes the opening of the top plate.

FIG. 19 is an enlarged vertical sectional view showing the positional relationship between the turntable, the top plate and the lid when the tray is at the disc mounting position.

FIG. 20 is an enlarged longitudinal sectional view showing the positional relationship between the turntable, the top plate and the lid when the tray slides in the A direction.

FIG. 21 is a plan view in which a part of the tray is cut away.

FIG. 22 is an enlarged side sectional view showing the action of the first locking member.

FIG. 23 is an enlarged plan view for explaining the action of the second locking member.

FIG. 24 is an enlarged plan view showing a lock lever.

FIG. 25 is a plan view showing a state in which the tray disc is pulled out to the exchange position.

[Explanation of symbols]

 1 CD-ROM drive device 2 Tray 3 Sub chassis 4 Tray sliding mechanism 5 Pickup part 6 Turntable 7 Locking mechanism 8 Lock mechanism 10 Chassis 11 Front bezel 12 Switch button 14 Guide rail pressing member 15, 16 Guide rail mechanism 17 Movable Side rail 18 Fixed side rail 19 Slide rail 20 Pinion 21 Drive unit 22 Base 23 Pickup drive unit 24 Pickup drive motor 26 Lead screw 27 Guide shaft 30 Locking hole 31 First locking member 33 Second locking member 35 Roller 36 Roller Supporting Member 38 Locking Roller 39 Lock Lever 42 Solenoid 48 Ejecting Pressing Member 51 Circuit Board 52 Flexible Cable 55 Anti-Vibration Member 57 Lid

Claims (2)

[Claims] 1. A turntable for rotating a disc as a recording medium, a pickup for detecting information recorded on the disc, a base for supporting the turntable and the pickup, and a base mounted on the base and manually operated. A tray that moves to a disk mounting position inside the housing or a disk replacement position that is pulled out of the housing, and a base that supports the base and that supports the tray via the base, and is slidably provided on the chassis. A disk device, comprising: a chassis; and a vibration-proof member provided between the sub-chassis and the base to elastically support the base and the tray to absorb vibration. 2. When the tray is at the disc mounting position, an opening is provided in a portion of the top plate that covers the chassis, the portion facing the turntable, and the opening is closed by a lid thinner than the top plate. The disk device according to claim 1, wherein the disk device is a disk device.