JP3114639B2 - 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 to which a disk such as a CD-ROM or a disk cartridge containing a disk can be mounted.

[0002]

2. Description of the Related Art As a storage medium for storing information such as a database and software, a disk-shaped storage medium reproduced by a laser pickup of an optical disk apparatus is used. In addition, the optical disc device includes
For example, CD (Compact Disc) or CD-RO
There are a "reproduction-only" type, which reads information stored on a disk called "M" or the like, and a "writable type", which can write information on the disk. In the writable type, a write-once optical disk device (CD-R) that can be written only once, a magneto-optical disk device that can be written any number of times, and a phase change disk (PD, CD-RW) device And the like.

[0003] Conventional optical disk devices are described above.
A plurality of optical disk devices are required because the disk is dedicated to the disk. In order to solve such inconvenience, for example, a disk device in which different types of disks can be mounted on the same tray has been developed.

[0004] As a conventional disk device to which such different types of disks are mounted, for example, there is one in which a disk cartridge containing a CD-ROM and a PD disk can be mounted on the same tray. FIG. 17 shows C
FIG. 4 is an exploded perspective view for explaining a conventional device in which a D-ROM or a disk cartridge can be mounted.

A turntable 2 for clamping a disk and an optical pickup 3 are arranged on a chassis 1, and a tray into which a CD-ROM or a disk cartridge (both not shown) is inserted. 4 is slidably mounted. This tray 4 is a CD
-It has a double structure including an inner tray 4a on which a ROM is mounted and an outer tray 4b on which a disk cartridge is mounted, and the inner tray 4a is mounted inside the outer tray 4b so as to be able to move up and down.

[0006] Incidentally, the inner tray 4a is a portion 4a ₁ mounting a small-diameter disk diameter disc 8cm is placed, a diameter of 12
cm disk and a disk mounting portion 4a ₂ to be placed. The inner tray 4a is normally biased to an upper position for supporting the CD-ROM, but is mounted so as to move down when a disk cartridge is mounted.

[0007] A support plate 5 for covering the upper space of the chassis 1 is mounted above the tray 4.
A shutter opening lever 6 for opening the shutter of the disk cartridge is supported on the lower surface of the disk cartridge. After the disk cartridge is mounted on the tray 4, the shutter opening lever 6 engages with the side of the shutter of the disk cartridge during the movement of the tray 4 into the apparatus, and is rotated by being pressed by the end of the disk cartridge. Thereby, the shutter is slid in the opening direction.

However, in the conventional apparatus as described above, since the shutter opening lever 6 rotatably attached to the support plate 5 is configured to open the shutter by the movement of the tray 4, the tray 4 is moved to a predetermined position. The shutter is fully opened immediately before reaching the mounting position. for that reason,
In the conventional device, since the shutter is fully opened after passing through the turntable 2, the mounting height position of the disk cartridge must be set to a height at which the shutter does not come into contact with the turntable 2, and accordingly the device is The thickness could not be reduced.

In order to solve such inconveniences, a method of providing a shutter opening lever at the rear of the tray 4 to eliminate the need for the support plate 5 and fully opening the shutter until the shutter reaches above the turntable 2 has been studied. Have been.

[0010]

As described above, in the configuration in which the shutter opening lever is provided at the rear portion of the tray 4, a gear is provided on the shutter opening lever, and the rack that meshes with the gear of the shutter opening lever is mounted on the base of the chassis 1. It is contemplated to be provided on top. As a driving means other than the rack, a method of driving a shutter opening lever by an actuator or the like has been studied.

In this configuration, the shutter of the disk cartridge can be fully opened before the shutter opening lever rotates with the movement of the tray 4 to reach the position above the turntable 2, so that the disk cartridge is opened by an amount corresponding to the opening of the shutter. Can be lowered, but the insertion height position of the tray 4 must be set so that the lower surface of the tray 4 does not interfere with driving means such as a rack provided on the base.

Therefore, in the case of the above-mentioned method, the insertion height position of the tray 4 is restricted by driving means such as a rack provided on the base, and it is not possible to further reduce the thickness of the apparatus. Especially for notebook computers, CDs
-There is a tendency that a disk device using a ROM or a disk cartridge as a storage medium is built-in as a standard equipment, and a reduction in thickness of the entire disk device has been desired.

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

[0014]

In order to solve the above problems, the present invention has the following features. Claim 1
According to the invention, in a disk device for performing recording or reproduction by opening a shutter of the disk cartridge when the tray reaches a mounting position by moving the tray into which the disk cartridge is inserted, the tray is supported by the tray, and A shutter opening member movably provided between a first position to be engaged and a second position to open the shutter; a driving position coupled to the shutter opening member on a base facing the tray; A drive member that is provided movably between a retracted position separated from the position and that rotates the shutter opening member to open the shutter as the tray moves to the mounting position; Moving means for moving the driving member to the retracted position before arriving at the position.

Therefore, according to the first aspect of the present invention, the shutter opening member opens the shutter of the disk cartridge in accordance with the insertion of the disk cartridge, and the moving member retracts the driving member before the tray arrives at the mounting position. Since the tray is moved to the position, the lower surface of the tray is prevented from interfering with the driving member, and the apparatus can be made thinner accordingly.

According to a second aspect of the present invention, in the disk device according to the first aspect, a gear is provided on the shutter opening member, and the driving member is a rack that meshes with a gear provided on the shutter opening member. It is characterized by the following.

Therefore, according to the second aspect of the present invention, since the driving member is a rack that meshes with the gear provided on the shutter opening member, the shutter opening member can be driven with a simple configuration, and the driving member can be driven. Since it can be formed in a thin plate shape, it is possible to cope with thinning.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a state where a tray of a disk device according to the present invention is pulled out, FIG. 2 is a side sectional view showing a state where the tray is pulled out, and FIG. 3 is a plan view showing a state where the tray is accommodated in the disk device. FIG. 4 is a side sectional view showing a state where the tray is accommodated in the disk device.

The disk device 11 (hereinafter referred to as "device") is a disk device connected to a personal computer (not shown) and used as an external storage device. This device 11
Is a disk cartridge 4 for CD-ROM or PD
5 (see FIG. 5) for receiving trays A and B
It is slidably provided in the direction. And the device 1
1 is a lock mechanism 1 for locking the tray 12 at the mounting position.
3 and a tray pressing mechanism 1 for pressing the tray 12 in the A direction
4 and a shutter opening / closing mechanism 15 for opening and closing the shutter of the disk cartridge.

When the eject button 17 provided on the front bezel 16 is pressed, the lock mechanism 13 is operated.
The lock lever 18 disposed on the lower surface of the second unit is separated from the lock pin 19 provided on the main body side to release the lock. When the lock of the tray 12 is released, the pressing lever 20 of the tray pressing mechanism 14 kicks the rear side wall 23 of the housing 22 by the spring force of the coil spring 21 and pushes the tray 12 in the direction A. This allows the operator to pull out the tray 12 to the disk replacement position.

A turntable 24 for driving a disk to rotate and an optical pickup 2 are provided on a bottom plate of the housing 22.
5 and a traverse 27 to which an optical pickup drive mechanism 26 is attached are provided rotatably in the up-down direction. The traverse 27 has a rotating shaft 27a at a rear portion, and is provided such that a front end is moved up and down in conjunction with the movement of the tray 12 in the A and B directions. That is, the traverse 27 descends while the tray 12 moves to the disk exchange position, and rises while the tray 12 moves to the mounting position.

An opening 98 through which the turntable 24 and the optical pickup 25 pass is provided in the base 22b of the housing 22, and positioning abutting portions 99 projecting inward from both side edges of the opening 98. Is provided. The traverse 27 is positioned at the recording / reproducing position with its upper surface abutting against the positioning abutment portion 99.

As shown in FIG. 4, when the tray 12 moves to the mounting position and the traverse 27 rotates upward, the turntable 24 mounted on the traverse 27
The disk 43 of the CD-ROM or the disk cartridge 45 mounted on the tray 2 is lifted from the mounting surface in the tray 12 or the disk cartridge and is clamped by the clamper 44 provided on the top plate 22a of the housing 22. Then, the optical pickup 25 performs the recording / reproducing operation while facing the recording surface of the disk 43.

An opening 29 having a shape corresponding to the turntable 24, the optical pickup 25, and the optical pickup driving mechanism 26 is formed in the cartridge mounting surface 12a of the tray 12. A CD-ROM is provided around the opening 29.
A plurality of disk support members 30 are provided in association with the mounting of the disk cartridge 45 that supports the outer periphery of the disk. In the present embodiment, each of the disk support members 30 (30a to 30a)
Reference numeral 30c) is attached so as to be housed in openings 12b arranged at 120-degree intervals on the cartridge mounting surface 12a.

Disk support member 30 (30a-30c)
Are formed in the same shape, and are rotatably supported by bearings 12d provided on the cartridge mounting surface 12a. Also, the disk support member 30 (30a to 30a)
30c) is held at a disk support position protruding above the opening 12b of the tray 12 by a torsion spring (hidden and invisible in FIGS. 1 and 3).

When the disk cartridge 45 is mounted, the disk support member 30 (30a to 30a)
c) pivots downward due to the weight of the disk cartridge 45 and rotates through the opening 12 provided in the cartridge mounting surface 12a.
b. FIG. 5 is a plan view showing the configuration of the disk cartridge.

In the disk cartridge 45, a disk 43 is housed in a box-shaped case 45a. The disk 43 is exposed on the upper and lower surfaces of the case 45a to enable recording and reproduction by the optical pickup 25. Opening 45b is formed to extend in the radial direction. Further, a shutter 45c for closing the opening 45b is attached to the upper and lower surfaces of the case 45a so as to be slidable in the C and D directions. When the shutter 45c is not mounted, the shutter 45c is urged to a position where the opening 45b is closed by a spring member (not shown). When the shutter 45c is inserted into the tray 12 and moved into the apparatus 11, the shutter 45c is opened and closed by the shutter opening / closing mechanism 15. The opening 45b is opened by sliding in the direction.

The rear side wall 23 of the tray 12 has
A shutter opening arm (shutter opening member) 31 for driving the shutter opening / closing mechanism 15 to open the shutter 45c of the disk cartridge 45 is rotatably mounted. The shutter opening arm 31 has a first arm 32 and a second arm 33 rotatably connected with the movement of the tray 12, and an engagement roller 34 provided at the tip of the second arm 33 has a disk. The cartridge 45 moves in the C and D directions orthogonal to the A and B directions in conjunction with the movement of the tray 12 while being engaged with the shutter 45 c of the cartridge 45.

Here, the configuration of the shutter opening / closing mechanism 15 and the shutter opening arm 31 which constitute the main parts of the present invention will be described. FIG. 6 is an exploded perspective view of the shutter opening arm 31, FIG. 7 is a rear view of the tray 12 to which the shutter opening arm 31 is attached as viewed from the rear side, and FIG. 8 is a plan view showing a state of the shutter opening / closing mechanism 15 before the cartridge is inserted. FIG. 9 is an exploded perspective view of the shutter opening / closing mechanism 15.

The shutter opening arm 31 has a pin 47 pivotally supported by a small hole 46 provided in the rear side wall 23 of the tray 12 and a small hole 48 at the base end of which the pin 47 is inserted. A first arm 32 rotatably supported,
A second arm 33 rotatably connected to an end of the first arm 32 by a burring caulking 51;
Guide pin 5 inserted into small hole 52 provided at one end of
3 and an engagement roller 34 rotatably supported by a shaft 55 inserted into a small hole 54 located on the distal end side of the guide pin 53.

The shutter opening arm 31 includes the first arm 3
The base end of the rear side wall portion 23 of the tray 12 is
And the tip of the second arm 33 is guided in the C and D directions by the guide pins 53, so that the second arm 33 rotates so as to extend along the rear side wall 23 of the tray 12 and 45c can be opened. At this time, the first arm 32 and the second arm 33
Since the height dimension is substantially the same as the thickness of the disc cartridge 45, the disc cartridge 45 is in close contact with the tray 12 so as not to protrude from the rear side. Therefore, the first arm 32 is located above the tray 12.
There is no need to provide a space for the second arm 33, and the thickness is reduced accordingly.

The first arm 32 and the second arm 33
Each of the pins 47 and the burring caulking 5 are formed by processing a sheet metal into a U shape to reduce the weight and secure the strength.
1. A guide pin 53 and a shaft 55 are inserted through a pair of small holes 48, a connecting hole 49, a connecting hole 50, and small holes 52 and 54 provided in upper and lower portions formed in a U-shape. The first arm 32 is integrally formed with an arc-shaped gear portion 56 on the lower base end side, and the power is transmitted to the gear portion 56 to rotate.

Further, a first arm 32 and a second arm 32 each having a U-shaped cross section are formed on the rear side wall portion 23 of the tray 12.
A convex portion 57 for fitting into the concave portion of the arm 33 is formed extending in the C and D directions. A guide groove 58 in which the guide pin 53 is fitted extends in the C and D directions on the upper surface of the convex portion 57. Is formed. Therefore, the guide pin 53 moves in the C and D directions along the guide groove 58 by the rotation of the first arm 32 and the second arm 33. Thus, the engagement pin 34 provided at the tip of the second arm 33 moves in the C and D directions to open and close the shutter 45c of the disk cartridge 45.

The torsion spring 60 shown by a broken line in FIG.
One end 60a is hung on the lower surface of the tray 12, and the other end 60b
Is hooked on the tip of the gear portion 56 of the first arm 32.
At the position shown in FIG. 8, the other end 60b of the torsion spring 60 is located on the right side of the line L connecting the pin 47 and the one end 60a.
2 is urged to rotate counterclockwise. Therefore, the second arm 33 is urged clockwise by the spring force of the torsion spring 60.

Therefore, before the disk cartridge 45 is inserted, the first arm 32 and the second arm 33
It is held in a folded shape. At this time, the engagement roller 34 is at the standby position displaced in the D direction. In FIG. 9, reference numeral 61 denotes a rack (drive member),
The gear portion 56 of the first arm 32 meshes with the gear portion 61a by the movement of
b so as to be rotatable. This rack 61
Is formed in a flat plate shape, and has a shaft hole 61b on the upper surface;
A first locking groove 61c formed in an arc shape centered on the shaft hole 61b, and a second locking formed in an arc shape centered on the shaft hole 61b symmetrically with the first locking groove 61c. Groove 61d,
A through hole 61e through which the shaft 62 is inserted is provided.

In the rack 61, the gear portion 61a has a first
The first arm 32 and the second arm 32 function as a driving member that meshes with the gear portion 56 of the arm 32 to drive the first arm 32 in the opening direction. The installation space is small and the structure is relatively simple. 33 can be driven. Since the rack 61 is formed of a flat plate-shaped member, it can be made thinner.

A mounting hole 22c into which the shaft 62 is fitted, a cam groove 22d formed so as to surround the mounting hole 22c, and a spring retaining portion 22e are provided on the base 22b to which the rack 61 is mounted. Have been. The cam groove 22d
Has an arcuate portion 22f and a locking portion 22g extending in a direction perpendicular to the end of the arcuate portion 22f.

Reference numeral 63 denotes a locking plate which locks the rack 61 and rotates the rack 61 to the retracted position with the movement of the tray 12 as described later. Further, on the lower surface of the locking plate 63, a shaft 63a which is fitted and supported in a shaft hole 61b provided in the center of the rack 61, and a rack 61
The first engaging portion 63b cut and raised to engage with the first locking groove 61c of the rack 61, and the second locking groove 61d of the rack 61
And a second engaging portion 63c formed of a protruding pin that protrudes so as to engage with the second engaging portion 63c.

The locking plate 63 has a shaft 63a, a first engaging portion 63b, and a second engaging portion 63c formed in the shaft hole 6 of the rack 61.
The first engagement groove 61c and the second engagement groove 61d, which are arc-shaped around the shaft hole 1b and the shaft hole 61b, can be rotated by a predetermined angle around the shaft hole 61b. .

One end of the locking plate 63 is a contact portion 63d projecting in the direction A from the side surface of the rack 61, and the other end is a spring retaining portion 63e. And
The locking plate 63 is a rack 61 extending in the C and D directions.
The rack 6 extends in the directions A and B so as to intersect.
1 is attached to the upper surface.

Reference numeral 64 denotes a torsion spring, one end 64a of which is hooked on a spring hook 22e of the base 22b, and the other end 64b.
Are latched on a spring latch 63e of the latch plate 63. Therefore, the locking plate 63 is provided with the torsion spring 6.
Although it is urged clockwise by the spring force of No. 4, it is locked so that it cannot rotate due to engagement with the rack 61.

The locking plate 63 is provided on the tray 12
Is pulled out in the direction A, the rack 61 is locked at the meshing position, the tray 12 is inserted in the direction B and the shutter 45c of the disk cartridge 45 is opened, and a rib (not shown) projecting from the lower surface of the tray 12 is opened. To rotate to the unlock position. As a result, the rack 61 rotates clockwise together with the locking plate 63, and thereby the tray 12
Is retracted from the moving path of the bearing portion 12d formed at the bottom.

FIG. 10 is a plan view showing an assembled state of the rack 61, the locking plate 63, and the torsion spring 64 when the tray 12 is pulled out to the disk replacement position. The rack 61 is rotatably attached to the base 22b by a shaft 62. Then, the locking plate 63 fits the shaft 63a into the shaft hole 61b of the rack 61, and fits the first engagement portion 63b into the first locking groove 61c of the rack 61.
In addition, the second engaging portion 63c is connected to the second locking groove 6 of the rack 61.
1d. The second engaging portion 63c protrudes longer than the first engaging portion 63b, and the second engaging portion 63c
Of the cam groove 22d formed in the base 22b.

In this state, one end 6 of the torsion spring 64
4a is hooked on the spring hooking portion 22e of the base 22b, and the other end 64b is hooked on the spring hooking portion 63e of the locking plate 63. At this time, since the second engaging portion 63c protruding downward from the locking plate 63 is fitted to the locking portion 22g extending in the C and D directions of the cam groove 22d, the spring force of the torsion spring 64 is provided. Even if urges the locking plate 63 in the direction B, the locking plate 63 is held at the position shown in FIG.

The shaft hole 61b, the first locking groove 61c, and the second locking groove 61d of the rack 61 interposed below the locking plate 63 have the shaft 63a, the first engaging portion 63b, and the second locking groove 61d. Is engaged with the rack 61, so that the rack 61
2 cannot be rotated, and is locked at the position shown in FIG.

Next, the operation of the shutter opening / closing mechanism 15 configured as described above will be described. 11 is a plan view showing a state in which the gear portion 56 of the first arm 32 meshes with the rack 61, FIG. 12 is a plan view showing an operation of opening the shutter 45c of the disk cartridge 45 as the tray 12 moves, and FIG. Shutter 45 of cartridge 45
It is a top view showing the state where c was fully opened.

[0047] When the rear side wall 23 of the tray 12 is the disc cartridge 45 is inserted into the tray 12 when in the P ₁ position (disc exchange position), with the engaging portion 45d of the shutter 45c as shown in FIG. 8 The mating roller 34 is engaged. When reaching the tray 12 is moved in the B direction P ₂ position as shown in FIG. 11, the gear portion 56 of the first arm 32 begins to mesh with the rack 61. At this time, the rack 61 is locked so as not to rotate by the action of the locking plate 63 and the torsion spring 64 described above.

Further, the tray 12 moves in the
_{At the third} position, since the gear portion 56 of the first arm 32 is engaged with the rack 61 as shown in FIG.
The first arm 32 rotates clockwise due to the relative displacement between the rack 2 and the rack 61, the second arm 33 connected to the first arm 32 by the burring caulking 51 rotates counterclockwise, and the guide pin 53 rotates. It moves in the C direction along the guide groove 58. Thus, the engagement roller 34 moves in the same direction to open the shutter 45c.

Then, the tray 12 moves in the direction B, and
_When reaching the _fourth position, as shown in FIG. 13, the first arm 32 and the second arm 33 are rotationally displaced so as to extend in the C and D directions, and the shutter opening arm 31 becomes linear. In this state, the disk cartridge 45 is
Is fully opened, the disk 43 is exposed, and recording and reproduction by the optical pickup 25 are enabled. At this time, the disk cartridge 45 is located in front of the turntable 24, and is fully opened before the shutter 45c passes above the turntable 24.

When the shutter opening arm 31 is fully opened, the first arm 32 and the second arm 3 are driven by the spring force of the torsion spring 60 that has biased the first arm 32.
3 is urged so as to be in close contact with the rear side wall portion 23 of the tray 12, and the shutter is held in a fully opened state. In the position shown in FIG. 12, the other end 60b of the torsion spring 60 is located on the line L connecting the pin 47 and the one end 60a, so that the spring force of the torsion spring 60 acts on the pin 47. .

In the position shown in FIG. 13, the other end 60b of the torsion spring 60 is located on the left side of the line L connecting the pin 47 and the one end 60a.
Urges the first arm 32 to rotate clockwise. As a result, the first arm 32 and the second arm 33 are held in the shutter fully open state.

As described above, the gear portion 56 of the first arm 32 engages with the rack 61 provided on the base 22b of the housing 22 with the relative displacement when the tray 12 moves in the direction B, and the shutter is opened. The arm 31 can open the shutter 45c of the disk cartridge 45 in a short time, and can fully open the shutter 45c before the front end of the disk cartridge 45 reaches the turntable 24.

Therefore, the conventional disk cartridge 4
Although the insertion height position of 5 is set to a height position where the shutter 45c passes above the turntable 24 so that the shutter 45c does not collide with the turntable 24, according to the present embodiment, the shutter 45c is fully opened. Since the disk 43 passes above the turntable 24, the insertion height can be lowered to such an extent that the disk 43 does not contact the turntable 24, and the device can be made thinner accordingly.
Further, since the shutter 45c passes below the clamper 44 with the shutter 45c fully opened, the clamper 44 can be disposed below the upper surface of the shutter 45c, which is advantageous in reducing the thickness of the apparatus. Further, a support plate for supporting the shutter opening member as in the conventional apparatus is not required, and the apparatus can be made thinner accordingly.

The position where the rack 61 and the locking plate 63 are attached overlaps with the position where the disk support member 30c provided on the tray 12 passes. for that reason,
On the lower surface of the tray 12, a bearing 12d that rotatably supports the disk support member 30c protrudes.
The sliding height position of the tray 12 must be increased so that 2d does not contact the rack 61 and the locking plate 63.

However, when the sliding height position of the tray 12 is increased as described above, the height of the apparatus becomes large despite the thinning of the apparatus. Therefore, in this embodiment, after the rib (moving means) 12e projecting from the lower surface of the tray 12 moves the locking plate 63 to the unlocked position, the rack 6
1 is configured to be displaced to a retracted position that does not contact the bearing 12d.

Here, the retracting operation of the rack 61, the locking plate 63, and the torsion spring 64 constituting the shutter opening / closing mechanism 15 will be described. FIG. 14 is a plan view showing a state immediately before the tray 12 moves in the direction B and the locking plate 63 is pressed in the locking releasing direction, and FIG.
FIG. 16 is a plan view showing a state in which the tray 3 starts operating in the unlocking direction, and FIG. 16 is a plan view showing a state in which the tray 12 is mounted at a predetermined mounting position.

As shown in FIG.
In the process of sliding back to the mounting position,
The rib 12e protruding from the lower surface on the back side of the locking plate 6
No. 3 is in contact with the contact portion 63d. Furthermore, if tray 12 is B
When sliding in the direction shown in FIG.
3 starts operating in the unlocking direction. That is, the locking plate 63 has a shaft 63a, a first engaging portion 63b, and a second engaging portion 63c each of which has a shaft hole 61b of the rack 61 and an arc-shaped first locking groove centered on the shaft hole 61b. Since 61c is fitted in the second locking groove 61d, the contact portion 63d is pressed in the B direction and rotates clockwise.

As described above, the locking plate 63 pressed by the rib 12e of the tray 12 rotates clockwise, and the second engaging portion 63c protruding below the locking plate 63 engages the cam groove 22d. It detaches from the locking portion 22g and reaches the arc-shaped portion 22f. Thereby, the locking of the locking plate 63 to the base 22b is released, and the locking plate 63
Indicates that the second engaging portion 63c is an arc-shaped portion 22f of the cam groove 22d.
Can be rotated along the axis.

Since the locking plate 63 is urged counterclockwise by the torsion spring 64, the contact portion 63d is pressed by the rib 12e of the tray 12.
Further, when the tray 12 slides in the B direction, as shown in FIG.
e and rotates clockwise together with the rack 61 to reach the retracted position. That is, the locking plate 63 is
Is rotated clockwise by a predetermined angle around the center, the first engaging portion 63b and the second engaging portion 63c contact the inner walls of the first locking groove 61c and the second locking groove 61d of the rack 61. Then, the rack 61 is pressed in the same direction.

As a result, the locking plate 63 and the rack 61 are pressed by the ribs 12e of the tray 12 and rotate to the retracted position. Then, as the tray 12 moves in the direction B, the contact portion 63d of the locking plate 63 moves
A rib 12f extending in the direction A from the rib 12e protruding to the back side of the second 2, a sloped portion 12g formed to avoid the bearing portion 12d, and A continuously with the sloped portion 12g.
It rotates clockwise while sliding on the rib 12h formed to extend in the direction.

Therefore, the locking plate 63 and the rack 6
1 is a disk support member 3 projecting from the lower surface of the tray 12
It pivots to a retracted position where it does not come into contact with the bearing portion 12d supporting Oc. Therefore, since the rack 61 and the locking plate 63 for driving the shutter opening arm 31 in the opening direction are retracted as described above, the sliding height position of the tray 12 is set to a low position close to the base 22b. Therefore, it is possible to cope with a reduction in the thickness of the device.

After the disk cartridge 45 is mounted in the apparatus as described above,
When taking out, the operator presses the eject button 17 provided on the front bezel 16. As a result, the lock mechanism 13 moves the lock lever 1 disposed on the lower surface of the tray 12.
The lock 8 is released from the lock pin 19 provided on the main body side. When the lock of the tray 12 is released, the pressing lever 20 of the tray pressing mechanism 14 kicks the rear side wall 23 of the housing 22 by the spring force of the coil spring 21 and
In the direction A. Thereby, the operator can use the tray 12
Can be pulled out to the disk replacement position.

After the eject operation, the disc cartridge 45 is moved as the tray 12 moves in the direction A.
After passing through the turntable 24, the shutter opening / closing mechanism 15 performs the reverse operation to close the shutter 45c.
In the above embodiment, the rack 61 functions as a driving member for driving the shutter opening arm 31 in the opening direction. However, the present invention is not limited to this, and the shutter opening arm 31 is driven by means other than the rack (for example, an actuator). You may make it do.

In the above-described embodiment, the ribs 12e of the tray 12 press the locking plate 63 to rotate the rack 61 to the retracted position. However, the present invention is not limited to this. As a matter of course, the motor may be driven to rotate the locking plate 63 to rotate the rack 61 to the retracted position.

The recording medium mounted on the tray 12 is not limited to the disk cartridge for CD-ROM or PD as in the above embodiment, but may be any other disk-shaped recording medium.
For example, the present invention can be applied to a disk on which a CD, a magnetic disk, a magneto-optical disk, an optical disk, and the like are mounted.

[0066]

As described above, according to the first aspect of the present invention, the shutter opening member opens the shutter of the disk cartridge when the disk cartridge is inserted, and the moving means before the tray arrives at the mounting position. As a result, since the driving member is moved to the retracted position, the lower surface of the tray is prevented from interfering with the driving member, and the apparatus can be made thinner accordingly.

According to the second aspect of the present invention, since the driving member is a rack that meshes with the gear provided on the shutter opening member, the shutter opening member can be driven with a simple structure, and the driving member can be driven. Since it can be formed in a thin plate shape, it is possible to cope with thinning.

[Brief description of the drawings]

FIG. 1 is a plan view showing a state where a tray of a disk device according to the present invention is pulled out.

FIG. 2 is a side sectional view showing a state where a tray is pulled out.

FIG. 3 is a plan view showing a state where the tray is accommodated in the disk device.

FIG. 4 is a side sectional view showing a state where the tray is accommodated in the disk device.

FIG. 5 is a diagram illustrating an example of a disk cartridge.

FIG. 6 is an exploded perspective view of a shutter opening arm.

FIG. 7 is a rear view of the tray to which the shutter opening arm is attached, as viewed from the rear side.

FIG. 8 is a plan view showing a state of a shutter opening / closing mechanism before a cartridge is inserted.

FIG. 9 is an exploded perspective view for explaining a configuration of a shutter opening / closing mechanism.

FIG. 10 is a plan view for explaining a state where the shutter opening / closing mechanism is assembled.

FIG. 11 is a plan view showing a state where the gear portion of the first arm meshes with the rack.

FIG. 12 is a plan view showing an operation of opening a shutter of the disk cartridge as the tray moves.

FIG. 13 is a plan view showing a state where the shutter of the disk cartridge is fully opened.

FIG. 14 is a plan view showing a state immediately before the tray moves in the direction B and the locking plate is pressed in the locking releasing direction.

FIG. 15 is a plan view showing a state in which the locking plate has started operating in the locking releasing direction.

FIG. 16 is a plan view showing a state where the tray is mounted at a predetermined mounting position.

FIG. 17 is an exploded perspective view for explaining a conventional apparatus in which a CD-ROM or a disk cartridge can be mounted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Disc apparatus 12 Tray 12e Rib 13 Lock mechanism 14 Tray pressing mechanism 15 Shutter opening / closing mechanism 16 Front bezel 17 Eject button 22 Housing 22d Cam groove 24 Turntable 25 Optical pickup 26 Optical pickup drive mechanism 27 Traverse 30 (30a-30c) Disk Support member 31 Shutter opening arm 32 First arm 33 Second arm 34 Engagement roller 45 Disk cartridge 45c Shutter 53 Guide pin 56 Gear part 58 Guide groove 60 Torsion spring 61 Rack 61a Gear part 61b Shaft hole 61c First locking groove 61d second locking groove 62 shaft 63 locking plate 64 torsion spring 63a shaft 63b first engaging portion 63c second engaging portion

Claims (2)

(57) [Claims] 1. A disk apparatus for performing recording or reproduction by opening a shutter of a disk cartridge when the tray reaches a mounting position by moving the tray into which the disk cartridge is inserted, wherein the shutter is supported by the tray, A shutter opening member movably provided between a first position for engaging the shutter and a second position for opening the shutter; a driving position coupled to the shutter opening member on a base opposed to the tray; A drive member provided to be movable between a retracted position separated from a drive position and rotating the shutter opening member as the tray moves to the mounting position to open the shutter; and Moving means for moving the driving member to the retracted position before arriving at the mounting position. Click device. 2. The disk device according to claim 1, wherein a gear is provided on the shutter opening member, and the driving member is a rack that meshes with a gear provided on the shutter opening member. .