JP2956469B2 - Disk unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

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

In a conventional apparatus, a tray on which a disk is placed is driven by a motor. When the tray moves out of the housing, the disk is placed on a 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 a motor as described above, a motor for driving the tray and a transmission mechanism for transmitting the driving force to the tray are necessary, and it is difficult to reduce the size and thickness of the apparatus accordingly. , Could not be incorporated into the notebook computer case.

[0004] Therefore, a disk device has been developed which eliminates the need for the motor and transmission mechanism as described above, and moves the tray to a disk mounting position inside the housing or a disk replacement position outside the housing by manual operation.

[0005]

However, in the apparatus configured to move the tray by manual operation, there is no mechanism for locking the tray at a predetermined disk replacement position when the tray is pulled out of the housing. In many cases, the tray was pulled out only before the disk replacement position, or the tray was pulled out too far until it came into contact with the tray prevention pin.

[0006] Therefore, when the disc is placed in the tray with the tray pulled out to the position just before the disc replacement position, the disc may come into contact with the casing and be damaged because the tray does not completely come out of the casing. was there. Also, if the tray is repeatedly pulled out until it comes into contact with the pin, the pin will be damaged,
There was a risk that the tray would fall off the housing.

Therefore, an object of the present invention is to provide a disk device which solves the above-mentioned problems.

[0008]

The invention according to claim 1 is provided so as to be movable to a disk mounting position in a housing or a disk replacement position pulled out of the housing by a manual operation, and has a width smaller than an outer diameter of the disk. A tray formed with a small size, a cover portion that covers a part of the disc protruding from one side of the tray and forms a space below, a lock mechanism that locks the tray at the disc mounting position, and an eject operation. a driving means for driving the locking mechanism to unlock the tray, the
Provided on a tray, pressing against the inner wall of the housing,
Even though the lock of the tray by the lock mechanism is released
An ejecting pressing mechanism for pushing the tray in the ejecting direction , a turntable provided on the tray for rotating a disk as a recording medium, and a pickup provided on the tray and detecting information recorded on the disk, Provided on either the tray or the housing, when the tray is moved to a disk replacement position,
And a locking member for locking the tray by engaging the other of the tray and the housing.

Further, according to the invention described in claim 2, the locking member is supported by an elastic member provided on one of the tray and the housing, and the tray or the tray is moved in a process of moving the tray. One of the housings is pressed laterally. According to the third aspect of the present invention, there is provided a tray which is movably provided to a disk mounting position in a housing or a disk replacement position pulled out of the housing, and has a width smaller than an outer diameter of the disk. A cover portion that covers a part of the disc protruding from one side of the tray and forms a space below, a lock mechanism that locks the tray at the disc mounting position, and the tray by an eject operation. Driving means for driving the lock mechanism so as to release the lock, and provided on the tray and pressing the inner wall of the housing.
The tray is locked by the lock mechanism.
An ejecting pressing mechanism for pushing the tray in the ejecting direction as the tray is released, a turntable provided on the tray for rotating a disk as a recording medium, and information provided on the tray and recorded on the disk. A first pickup provided on the tray for detecting, wherein the tray is engaged with the housing to lock the tray so as to restrict the movement of the tray in one direction when the tray is moved to a disk replacement position; When the tray is provided in the housing and the tray is moved to the disk replacement position,
A second locking member for locking the tray so as to engage with the tray and restrict movement of the tray in the other direction.

[0010]

According to the first aspect of the present invention, since the width of the tray is smaller than the outer diameter of the disk, the cover portion is formed.
The space formed below the tray can be effectively used, and the mounted disk can be protected by covering a part of the disk protruding to the side of the tray. The lock mechanism locks the tray at the disc loading position, which prevents the tray from moving on its own, and the eject push mechanism pushes the tray in the eject direction. Can be withdrawn. In addition, an ejection pressing mechanism is provided on the tray.
The tray is pushed out a predetermined distance.
The ejector pressing mechanism can be made compact.
You. Further, when the tray is moved to the disk replacement position, the tray is locked by the locking member, so that the tray can be prevented from falling off and the disk can be accurately mounted. In addition, according to the second aspect, the tray is prevented from rattling by pressing the other of the tray and the housing to the side during the movement of the tray by the locking member.

According to the third aspect, similarly to the first aspect, the tray is formed below the cover since the width of the tray is smaller than the outer diameter of the disk .
The space can be effectively used, and the mounted disk can be protected by covering a part of the disk protruding to the side of the tray. The lock mechanism locks the tray at the disc loading position, which prevents the tray from moving on its own, and the eject push mechanism pushes the tray in the eject direction. Can be withdrawn. Also, Iji
The press mechanism is provided on the tray.
Because it is configured to extrude only a predetermined distance,
The pressure mechanism can be made compact. Further, when the tray is moved to the disk replacement position by the first locking member, the movement of the tray in one direction is restricted, and the movement of the tray in the other direction is restricted by the second locking member. Is securely locked at the disk replacement position to prevent the tray from falling off.

[0012]

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

The apparatus 1 generally comprises a tray 2 for receiving 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 loaded disc (C
A turntable 6 for rotating a D-ROM, a locking mechanism 7 for locking the tray 2 when the tray 2 is moved to the disk replacement position, and locking the tray 2 when the tray 2 is moved to the disk mounting position. And a lock mechanism 8.

FIG. 1 shows a state in which the top plate 9 shown in FIG.
FIG. 2 shows a state where the top plate 9 is removed and the tray 2 is moved to a disk replacement position where the tray 2 is pulled out of the apparatus. The tray 2 is formed so that the width thereof is smaller than the outer diameter of the disk so that a part of the disk (not shown) protrudes from the tray 2 and slides in the A and B directions by manual operation. It reaches the disk replacement position or the disk mounting position.

For this reason, the tray 1 is provided with A, B
Since a drive mechanism for driving in the direction (including a motor and a transmission mechanism) is not provided, and the number of parts is reduced accordingly, miniaturization and thinning are achieved. Reference numeral 10 denotes a chassis, which includes a storage portion 10a for storing the above mechanisms, and a cover portion 10b that covers a portion of the disk that protrudes from the tray 2 to protect the protruding disk.
The space below the cover 9b is a space.
The other devices in the notebook computer to which is installed will be provided.

A front bezel 11 is fixed to the front end of the tray 2 and slides in the directions A and B integrally with the tray 2. At the center of the front bezel 11, a switch button 12 for releasing the lock by the lock mechanism 8 when pulling out the tray 2 is provided. 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 as described later, thereby facilitating the pull-out operation of the tray 2.

As shown in FIGS. 3 and 5, the tray 2
A disk facing surface 2a that forms a space for the disk to face, a pickup and turntable opening 2b formed in the disk facing surface 2a, and a finger when taking out the disk placed on the disk facing surface 2a. And an arc-shaped opening 2c for taking out a disk into which a disk is inserted.

The disk facing surface 2a has a lateral width smaller than the outer diameter of the disk so as to cover the storage portion 10a of the chassis 10, and is formed so as to cover about ／ of the area of the disk. As a result, the size of the device 1 can be reduced. As shown in FIGS. 3 and 6, the sub-chassis 3 has a rectangular frame 3a on which the tray 2 is mounted and fixed and has an opening for a pickup and a turntable, and is provided on the right side of the frame 3a. , B, 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.

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

Movable rail 17 and fixed rail 18
Has a C-shaped cross section and has inwardly bent edges 17a and 18a. On the lower edge 17a of the movable rail 17, a rack 17b extending in the longitudinal direction is provided. Also, 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 the first track 19a with which the edge 17a of the movable rail 17 engages and the first track 19a with which the edge 18a of the fixed rail 18 engages. Second trajectory 19b, the first trajectory 19a and the second
And a groove 19c formed between the track 19b.
A pinion 20 is rotatably housed at an intermediate position in the longitudinal direction of the groove 19 c of the slide rail 19. The upper and lower portions of the pinion 20 are respectively provided on the movable rail 1.
7, meshes with the racks 17b, 18b of the fixed side rail 18.

In the guide rail mechanism 15, the movable rail 17 is screwed to the side wall 10c of the chassis 10, and the fixed rail 18 is screwed to the bracket 3b of the sub-chassis 3 supporting 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 while the pinion 20 moves.
To rotate. As the pinion 20 rotates, the slide rail 19 slides in the direction A with respect to the movable rail 17.

As shown in FIG. 11, the movable rail 17 of the guide rail mechanism 16 includes pressing portions 14a, 1 of a guide rail pressing member 14 provided on the sub-chassis 3.
4b. These pressing parts 14a, 14b
Are bent into a crank shape so as to function as leaf springs, and are bent outward when fastened to the movable rail 17.

For this reason, the movable side rail 17 is
4a, 14b, the tray sliding direction (A,
B direction), and is pressed in the X direction perpendicular to (X direction) to prevent rattling in the lateral direction and to provide the pressing portions 14a, 14b.
Thereby, dimensional errors of the chassis 10 and the sub-chassis 3 can be absorbed. As shown in FIG. 8A, when the movable rail 17 is pressed in the X direction, the movable rail 17
A first gap S1 is formed between the movable rail 17 and the fixed rail 18, and a second gap S2 is formed between the fixed rail 18 and the second track 19 b of the slide rail 19. A third gap S3 is formed between the slide rail 19 and the first track 19a.

Accordingly, the first to third gaps S are provided between the rails 17 to 19 of the guide rail mechanism 16 as described above.
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 slide the tray 2 in a state in which the movable rail 17 is pressed in the X direction without rattling in the lateral direction. Can be.

The fixed side rail 18 and the movable side rail 17
Slide rail 19 interposed between the fixed rail 1
Since the movable rail 17 is slidably engaged with the movable rail 8 and the movable rail 17, the movable rail 17 can move with a stroke twice as much as the moving distance 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 in the housing to the disk replacement position outside the housing, and can move the movable rail 17.
Is pressed in the X direction, the rattling of the tray 2 in the lateral direction can be prevented, and the tray 2 can be pulled out smoothly.

Accordingly, since the vibration due to the sliding operation of the tray does not propagate to the turntable 6 and the pickup section 5 provided on the tray 2, a decrease in detection accuracy when detecting information recorded on the disk recording surface is prevented. You. As described above, the tray 2 is slidably guided by the guide rail mechanisms 15, 16 interposed between the both sides of the sub-chassis 3 and the side walls 10c, 10d of the chassis 10, and the tray 2 is moved to the disk mounting position. At one time, each rail 17 ~
19 is housed in the chassis 10 as shown in FIG.

When the tray 2 is pulled out in the direction A and moved to the disk replacement position, the slide rail 19 slides in the direction A by a 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.
As shown in FIGS. 2, 3 and 12, above the sub-chassis 3, a pickup unit 5 and a turntable 6 are provided.
Is provided. The drive unit 21 includes a base 22 fixed above 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 disk radial direction, and an attachment unit attached to the base 22. And the turntable 6 that has been set.

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 parallel to and guides the pickup unit 5. Therefore, the pickup section 5 is provided so as to face the opening 22a of the base 22 extending in the radial direction of the disc, and both sides are slidably guided by the lead screw 26 and the guide shaft 27.

Since the pickup section 5 has an engaging section 28 which engages with the threaded section of the lead screw 26, the pickup section 5 moves in the disk radial direction when the lead screw 26 is rotated by the rotation of the pickup driving motor 24. I do. Further, the turntable 6 has a turntable driving motor 29 at a lower portion thereof. When the tray 2 arrives at a predetermined mounting position in the apparatus 1, the turntable driving motor 29 drives the disc clamped on the turntable 6 at a constant speed at a constant speed.

As shown in FIGS. 7 and 13, the locking mechanism 7 is a mechanism for locking the tray 2 when the tray 2 moves to the disk exchange position shown in FIG. The locking mechanism 7 is provided on the tray 2 and engages with the locking hole 30 formed in the chassis 10 to lock the tray 2 when the tray 2 is moved to the disk replacement position. Member 3
1 and a second locking member 33 that is provided on the side wall 10c of the chassis 10 and locks the tray 2 by engaging with the recess of the tray 2 when the tray 2 moves to the disk replacement position.

As shown in FIG. 14, the first locking member 31 is provided at the end of the bracket 3b of the sub-chassis 3, and is provided on the lower surface 3d of the end of the bracket 3b.
4 and a locking portion 31b provided at the end of the leaf spring 31a. Locking part 31b
Is a sliding contact surface 31c for slidingly contacting the chassis 10, and the chassis 1
It has a locking surface 31d locked in the locking hole 30 of 0, and an inclined surface 31e used when the locking portion 31b separates from the locking hole 30.

Therefore, before the tray 2 is moved to the disk replacement position, as shown in FIG. 14A, the first locking member 31 has the sliding contact surface 31c of the locking portion 31b.
And the leaf spring 31a is bent in the C direction.
That is, the sliding contact surface 31c of the locking portion 31b is formed by the leaf spring 31a.
Is pressed by the chassis 10, the reaction force of the leaf spring 31 a 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
The friction when c slides on the chassis 10 is reduced, and the movement of the tray 2 is not hindered. When the tray 2 moves to the disk replacement position, the locking portion 31b is displaced in the direction D as shown in FIG.
0, and the locking surface 31d is fixed to the locking hole 30.
Abuts the edge of zero. Thereby, the movement of the tray 2 in the A direction is restricted.

When the tray 2 moves in the direction B, the inclined surface 31e of the locking portion 31b rides on the edge of the locking hole 30 and is displaced in the direction C so that the lock is released. Therefore, the movement of the tray 2 only in the direction A at the disc replacement position is restricted and the movement in the direction B is permitted by the engagement between the first locking member 31 and the locking hole 30.

As shown in FIG. 15, the second locking member 33
Comprises a roller 35 that rolls on the side wall 2e of the tray 2 and a roller support member 36 that rotatably supports the roller 35. The roller 35 moves the tray 2
Rolls the side wall 2e, and when the tray 2 moves to the disk mounting position or the disk replacement position, the tray 2 fits into the recesses 2f and 2g provided on the side wall 2e to regulate the movement of the tray 2.

One end 36a of the roller supporting member 36 is fastened to the side wall 10d of the chassis 10 by a rivet 37, and a roller 35 is supported on the tip 36c of the arm 36b. The arm 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 2 e of the tray 2. When the roller 2 is moved to the position,
f, 2g to lock the tray 2.

As shown in FIGS. 7 and 16, the lock mechanism 8 is provided on the mounting portion 45a of the frame 3a of the sub-chassis 3, and is locked by a 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 to rotate the lock lever 39 to a lock position or an unlock position.

As shown in an enlarged manner in FIG. 16, the lock lever 39 is provided with a shaft 41 that stands on the frame 3a of the sub-chassis 3.
Arm 39c having, at its tip, a bearing portion 39a that fits with the engaging roller 38 of the chassis 10
And a connecting arm 39d connected to the plunger 43 driven by the solenoid 42. Solenoid 4
When the switch button 12 of the front bezel 11 is turned on, the magnet 2 is excited to suck the plunger 43. The end of the plunger 43 is penetrated and connected to a hole 39e formed in the connecting arm 39d of the lock lever 39.

The plunger 43 draws the connecting arm 39d by the electromagnetic force of the solenoid 42. Therefore,
The lock lever 39 is urged in the G direction by a torsion spring (not shown).
b is engaged with the locking roller 38 to be in a locked state. When the plunger 43 is attracted by the electromagnetic force of the solenoid 42, the plunger 43 rotates in the H direction about the shaft 41 and
9b is separated from the locking roller 38 to enter the unlocked state.

Incidentally, as shown in FIG.
The ejecting pressing member urged in the direction B by the coil spring 47 is provided on the mounting portion 46 of the frame 3a. The ejecting pressing member has a long hole 48a that fits into a pin 49 rising from the frame 3a of the sub-chassis 3, and is slidably mounted in the A and B directions. One end of the coil spring 47 is hooked on the hook pin 3d of the sub-chassis 3, and the other end is held by the hook 4
8b.

Therefore, when the lock by the lock mechanism 8 is released, the ejecting pressing member becomes the coil spring 47.
The rear part 10g of the chassis 10 is pressed by the spring force of.
The sub-chassis 3 moves in the direction A due to the reaction. As a result, the tray 2 provided on the sub-chassis 3
In this case, the front bezel 12 is moved in the direction A by a predetermined distance from the housing of the notebook computer (not shown), so that the tray 2 can be easily pulled out. Then, the front bezel 12 is manually
When pulled in the direction, the tray 2 moves to the disk exchange position as shown in FIG.

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
The drive unit 2 via the flexible cable 52
The first pickup 5, the turntable 6, and the pickup driving motor 24 are connected to a board 53 for external connection. Therefore, the pickup 5, the turntable 6, and the pickup driving motor 24 perform a predetermined operation according to the control signal output from the circuit board 51.

Incidentally, the flexible cable 52 is interposed in a gap between the sub-chassis 3 and the side wall of the storage portion 10a of the chassis 10 in a state of being slackened in a U-shape, so that the sliding operation of the tray 2 is performed. It is provided so as not to interfere. Here, the operation of the CD-ROM drive device 1 configured as described above will be described. As shown in FIGS. 1, 12, and 13, a tray 2 is housed in the apparatus 1 before the disc is mounted. In a state where the tray 2 is mounted in the apparatus, FIG.
The lock mechanism 8 provided on the sub-chassis 3 as shown in FIG.
Is locked by the locking roller 38 of the chassis 10 and, as shown in FIG.
3 is fitted in the concave portion 2f of the tray 2,
The tray 2 and the sub-chassis 3 are locked at a mounting position in the apparatus.

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, the lock lever 39 rotates about the shaft 41 in the H direction, and the claw 39b is moved. The lock is released from the locking roller 38. As described above, when the lock of the sub-chassis 3 by the lock mechanism 8 is released, the ejecting pressing member shown in FIG. 13 presses the rear portion 10 g of the chassis 10 by the spring force of the coil spring 47. 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 concave portion 2f of the tray 2, but as shown in FIG.
The ejection pressing member is a rear portion 10 g of the chassis 10.
When pressed, the roller 2 rolls on the inclined portion of the recess 2 f and slides on the side wall 2 e of the tray 2. Therefore, the sub-chassis 3 and the tray 2 are moved in the direction A by a predetermined distance to a position where the front bezel 12 protrudes from the housing of the notebook computer (not shown) so that the tray 2 can be easily pulled out. When the front bezel 12 is manually pulled in the direction A, the movable rails 17 of the pair of guide rail mechanisms 15 and 16 slide in the direction A along the slide rails 19 as shown in FIG. The slide rail 19 slides in the direction A along the fixed side rail 18.

Further, when the front bezel 12 is pulled in the direction A, the sub-chassis 3 and the tray 2 slide in the direction A while being guided by the pair of guide rail mechanisms 15 and 16. During the sliding operation in the direction A, 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 aforementioned guide rail pressing member 1
4 pushes the movable rail 17 of the guide rail mechanism 15 in the X direction, so that the rattling of the tray 2 in the horizontal direction is prevented, and the tray 2 can be pulled out smoothly. FIG. 2, FIG.
As shown in FIG. 7, when the tray 2 moves to the disk replacement position, as shown in FIG. 15C, the roller 35 of the locking member 33 clicks into the recess 2g of the tray 2, and As shown in (B), the locking portion 3 of the locking member 31
1b is displaced in the direction D and fits into the locking hole 30 of the chassis 10, and the locking surface 31d contacts the edge of the locking hole 30. As a result, the tray 2 is locked at the disc replacement position and the movement in the direction A is restricted.

Therefore, the roller 35 of the locking member 33 is fitted into the recess 2g of the tray 2 as described above during the process of pulling the front bezel 12 in the direction A.
Are locked, and the operational feeling is improved. Therefore, the tray 2 is prevented from dropping due to excessive pulling of the tray 2 in the direction A, or the tray 2 is not stopped before reaching the disk replacement position because the disk replacement position is not known.

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

Therefore, the tray 2 slides in the direction B from the disk exchange position while being guided by the pair of guide rail mechanisms 15 and 16, and returns to the disk mounting position shown in FIGS. 1, 8 and 13. At this time, the roller 3 of the locking member 33
Since the roller 5 rolls while being pressed by the side wall 2e of the tray 2, the rattling of the tray 2 is prevented, and the tray 2 slides stably and smoothly.

When the tray 2 arrives at the disk mounting position, the roller 35 of the locking member 33 clicks into the concave portion 2f of the tray 2 and the lock lever 39 of the lock mechanism 8 locks the chassis 10. It is locked by the roller 38. Therefore, the user can feel that the tray 2 has arrived at the disk mounting position by a click feeling when the roller 35 of the locking member 33 is fitted into the concave portion 2f of the tray 2.

It should be noted that the present invention is directed to a CD-ROM as in the above embodiment.
The present invention is similarly applied to not only the ROM drive device but also other disk-shaped recording media such as a CD, a magnetic disk, a magneto-optical disk, and an optical disk.

[0054]

As described above, according to the first aspect of the present invention, since the width of the tray is smaller than the outer diameter of the disk, the space formed below the cover is effectively used. In addition, the mounted disk can be protected by covering the part of the disk protruding to the side of the tray with the cover portion. In addition, since the tray is locked at the disk mounting position by the lock mechanism, the tray can be prevented from moving on its own,
Since the eject pressing mechanism pushes the tray in the eject direction by the eject operation, the tray can be smoothly pulled out even by a manual operation. Also for eject
A pressing mechanism is provided on the tray to move the tray a predetermined distance.
Configuration, so that the ejection pressing mechanism
It can be made compact. Further, when the tray is moved to the disk replacement position, the tray is locked by the locking member, so that the tray can be prevented from falling off and the disk can be accurately mounted. Further, according to the second aspect, the tray can be prevented from rattling by pressing the other of the tray and the casing to the side while the locking member moves the tray.

According to the third aspect, similarly to the first aspect, the tray is formed below the cover since the width of the tray is smaller than the outer diameter of the disk .
The space can be effectively used, and the mounted disk can be protected by covering a part of the disk protruding to the side of the tray. The lock mechanism locks the tray at the disc loading position, which prevents the tray from moving on its own, and the eject push mechanism pushes the tray in the eject direction. Can be withdrawn. Also, Iji
The press mechanism is provided on the tray.
Because it is configured to extrude only a predetermined distance,
The pressure mechanism can be made compact. Further, when the tray is moved to the disk replacement position by the first locking member, the movement of the tray in one direction is restricted, and the movement of the tray in the other direction is restricted by the second locking member. Can be reliably locked at the disk replacement position to prevent the tray from falling off.

[Brief description of the drawings]

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

FIG. 2 is a perspective view of a state where a tray is pulled out.

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

FIG. 4 is an exploded perspective view following the lower part of FIG. 3;

FIG. 5 is a plan view of a 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 a guide rail mechanism.

FIG. 8 is a longitudinal 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 showing a state in which a top plate is removed.

FIG. 13 is a plan view of the tray with a part cut away.

FIG. 14 is an enlarged side sectional view for explaining the operation of the first locking member.

FIG. 15 is an enlarged plan view illustrating an operation of a second locking member.

FIG. 16 is an enlarged plan view showing a lock lever.

FIG. 17 is a plan view showing a state where the tray is pulled out to a tray disk replacement position.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CD-ROM drive device 2 Tray 3 Subchassis 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 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

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 17/04 A47B 88/00

Claims (3)

(57) [Claims] 1. A tray provided by a manual operation so as to be movable to a disk mounting position in a housing or a disk replacement position pulled out of the housing, and having a width smaller than an outer diameter of the disk, and one side of the tray. If you cover a part of the disc that protrudes ,
A cover part that forms a space below, a lock mechanism that locks the tray at the disc mounting position, a driving unit that drives the lock mechanism so that the tray is unlocked by an eject operation , Is provided and presses the housing inner wall,
The lock of the tray by the lock mechanism is released.
A pushing mechanism for ejecting the tray in the ejecting direction , a turntable provided on the tray for rotating a disc as a recording medium, and a pickup provided on the tray and detecting information recorded on the disc. And locking provided on one of the tray or the housing and engaging the other of the tray or the housing to lock the tray when the tray is moved to the disk replacement position. A disk device comprising: a member; 2. The locking member is supported by an elastic member provided on one of the tray and the housing, and holds the other of the tray and the housing in the process of moving the tray. 2. The disk device according to claim 1, wherein the disk device is pressed in a direction. 3. A tray provided by a manual operation so as to be movable to a disk mounting position in the housing or a disk replacement position pulled out of the housing, and having a width smaller than an outer diameter of the disk, and one side of the tray. If you cover a part of the disc that protrudes ,
A cover part that forms a space below, a lock mechanism that locks the tray at the disc mounting position, a driving unit that drives the lock mechanism so that the tray is unlocked by an eject operation , Is provided and presses the housing inner wall,
The lock of the tray by the lock mechanism is released.
A pushing mechanism for ejecting the tray in the ejecting direction , a turntable provided on the tray for rotating a disc as a recording medium, and a pickup provided on the tray and detecting information recorded on the disc. A first latch provided on the tray, the first latch being engaged with the housing to lock the tray so as to restrict the movement of the tray in one direction when the tray is moved to the disk exchange position. A second member provided on the housing and engaging the tray to lock the tray so as to restrict the movement of the tray in the other direction when the tray is moved to a disk replacement position. A disk device, comprising: a stop member.