JP2785802B2 - Disc loading mechanism - 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 loading mechanism, and more particularly, to a disk loading mechanism for an apparatus that uses an entire optical disk by pulling it out of a cartridge and has optical heads on both sides of the disk.

[0002]

2. Description of the Related Art Conventionally, in an apparatus having optical heads on both sides of an optical disk, there have been the following disk loading mechanisms for inserting and removing the optical disk into and out of the apparatus. That is, the optical disk is placed on a predetermined sub-tray, and the sub-tray is moved. Then, the sub-tray is inserted between the upper and lower optical heads, the optical disk is transported to a predetermined position for reading data, and stopped at the predetermined position.

[0003] A spindle motor for rotating the optical disc is arranged at a predetermined position for playing, and a turntable for supporting the optical disc is arranged at the tip of the spindle motor. At this time,
The spindle motor is raised by a spindle motor lifting mechanism. For this reason, the optical disc is placed on the turntable, and the optical disc is separated from the sub-tray. Then, the optical disk is rotated by the rotation of the spindle motor, and data is read from the optical head.

[0004]

However, the above-mentioned conventional disk loading mechanism has the following disadvantages. That is, in a device having optical heads above and below, it is generally better to make the distance between the optical heads narrower from the viewpoint of securing the data reading and reading accuracy. However, on the other hand, in a method in which the disk is separated from the sub-tray only by raising the spindle motor, a sufficient distance between the disk and the sub-tray cannot be secured, and depending on design conditions, the optical disk contacts a part of the sub-tray. It was causing inconvenience.

When the distance between the optical disk and the sub-tray is small, there is a problem that the vertical positioning control of the spindle motor is difficult and complicated. Further, when optical disks having different thicknesses are used, the control is further complicated, and there is a disadvantage that the optical disk cannot be used in some cases.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to improve the disadvantages of the prior art and, in particular, to provide a disk loading mechanism capable of securing a sufficient space between a disk and a sub-tray after disk loading.

[0007]

According to a first aspect of the present invention, there is provided a disk loading mechanism, comprising: a sub-tray for holding a disk and moving the sub-tray to a predetermined position; , A carriage arm 1 a for urging the sub-tray 31 to move, and a spindle motor 26 for rotating the disk 32 at a predetermined position.
And a base body 50 for accommodating these components, and a tray separating means 47 for separating the disk tray 44 from the moving path at a predetermined position following the movement of the sub-tray 31 along the moving path. Has been adopted.

When the loading motor 4 rotates in the loading direction, the carriage arm 1a descends along the vertical portion of the carriage groove 22, and the pin 43 is inserted into the drawing hole 34 of the sub-tray 31. It is. Thereafter, the carriage arm 1a moves horizontally along the horizontal portion of the carriage groove 22 by the action of the rack 3, and the sub-tray 31 is pulled out horizontally with the disk 32 mounted.

The sub-tray 31 is drawn horizontally between the optical heads 52 and 53. At this time, the disc tray 44 is supported by a hinge member 47 connecting the tray base 48 mounted on the lower base main body 50 and the disc tray 44, and the hinge member 47 can rotate around a hinge shaft 49. it can.

When the disk 32 has moved to a predetermined position, the carriage arm 1a
4 comes into contact with the roller 45 attached thereto. After the contact, the carriage arm 1a continues to move and presses the disk tray 44. Accordingly, the disc tray 44 moves in the loading direction along with the movement of the carriage arm 1a, and at the same time, moves down due to the action of the hinge member 47.

The invention according to claim 2 employs a structure in which a spindle moving mechanism 25 for moving the spindle motor 26 close to and away from the movement path is provided on the base body 50, and the other structure is as described in claim 1 Same as the invention. With the above configuration, the spindle motor 26 is raised to a predetermined height by the spindle moving mechanism 25, and the disk 32 is carried on the turntable 27.

Further, according to the third aspect of the present invention, a magnetic hub 33 is formed in a central region of the disk 32, a spindle motor 26 is provided with a turntable 27, and the turntable 27 is provided with a predetermined magnet 28. ,
The magnetic hub 33 of the disk 32 is
The other configuration is claimed in claim 1.
Or, it is the same as the invention described in 2. With the above configuration, the disk 32 is carried on the turntable 27 attached to the upper part of the spindle motor 26. The magnetic hub 33 at the center of the optical disk 32 is moved by the magnet 28 fixed to the turntable 27.
Is attracted and fixed.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. First, FIG. 1 is a perspective view showing a disk transport mechanism of a disk loading mechanism 1 according to an embodiment of the present invention. FIG. 2 is a side view showing a cross-sectional view of some components of the disc loading mechanism 1 disclosed in FIG.

As is apparent from FIGS. 1 and 2, in the disc loading mechanism 1 of the present embodiment, a sub-tray 31 for carrying a disc 32 which is an optical disc and moving it to a predetermined position, and moving the sub-tray 31 to a predetermined position The disc tray 44 supported by the sub-tray 31
A carriage arm 1a for urging a driving force for movement to
A spindle motor 26 for rotating the disk 32 at a predetermined position, and a base body 50 for accommodating these components are provided. The disk tray 44 is separated from the moving path at a predetermined position following the movement of the sub-tray 31 along the moving path. A tray separating means 47 is provided.

Further, the disk loading mechanism 1 is equipped with a spindle moving mechanism 25 for moving the spindle motor 26 close to and away from the moving path on the base body 50. In addition, a magnetic hub 33 is formed in a central region of the disk 32, and a turntable 27 is mounted on the spindle motor 26, and a predetermined magnet 28 is provided on the turntable 27.
The second magnetic hub 33 is attracted.

The above will be described in detail. As shown in FIG.
Are carried on the sub-tray 31. This sub tray 3
Numeral 1 is formed in a plate shape, and a portion where the disk 32 is arranged is formed in a circular concave shape. The central portion of the hollow penetrates, and a turntable 27 of a spindle motor 26 described later is inserted into the hollow. Further, a predetermined drawer hole 34 is formed at one end (right side in FIG. 1) of the sub-tray 31 (see FIG. 2).

On both sides of the sub-tray 31, predetermined carriage arms 1a are provided. The carriage arm 1a is configured to move the above-described sub tray 31 into the cartridge 30.
It has a role to draw from. For this reason, a pin 43 is provided at a position corresponding to the drawout hole 34 of the sub-tray 31 in the carriage arm 1a. Further, a predetermined pin member 1b is provided on each carriage arm 1a so as to protrude outward in the horizontal direction.

A guide plate 2 for supporting the carriage arm 1a is provided on both sides of the carriage arm 1a.
Are arranged. A predetermined carriage groove 22 is formed in the guide plate 2, and the pin member 1 b of the carriage arm 1 a is inserted into the carriage groove 22. Further, a predetermined pulley 8 is provided in an upper region of the guide plate 2. The pulley 8 is for applying a driving force to a belt described later. It is engaged with the loading motor 4 via the shaft 7, the worm wheel 6, and the worm 5.

A predetermined rack 3 is provided on the guide plate 2. The rack 3 is provided with the pin member 1 described above.
b to move the carriage arm 1a horizontally and vertically. Therefore, a rack groove 21 is formed in the rack 3 for inserting the pin member 1b. In the rack groove 21, a horizontal portion and an inclined portion are integrally formed, and the inclined portion is formed by the guide plate 2.
Has a role of moving the carriage arm 1a in the vertical direction at one end (left side in FIG. 1). Also,
A predetermined belt 9 is attached to the rack 3 via a belt retainer 10.
Are engaged. The belt 9 transmits a driving force for moving the carriage arm 1a to the rack 3.

The disc loading mechanism 1 has:
As shown in FIG. 2, a disc tray 44 supporting the sub-tray 31 is provided. This disc tray 44
Are arranged at predetermined positions for reading data from the disk 32. And this disc tray 44
It is engaged with the base body 50 via the tray separating means 47. The tray separating means 47 is specifically composed of a hinge member 47. For this reason, as can be understood from FIG.
7, the disk tray 44 is lowered while maintaining the parallel state with respect to the base body 50. The hinge member 47 includes a disc tray 44.
Is connected to the cartridge 30 side.

At a predetermined position on the base body 50,
A spindle motor 26 is provided, and a turntable 27 having a magnet 28 is provided at the upper end of the spindle motor 26. This spindle motor 26
Is for carrying the disk 32 and rotating it. The spindle motor 26 is provided with a spindle moving mechanism 25, which moves up and down when the disk 32 is loaded and unloaded.

Further, optical heads 52 and 53 are arranged near the disk 32 positioned at a predetermined position. The optical heads 52 and 53 are for reading and writing data from both sides of the disk 32, and are constituted by optical sensors. Further, the distance between the optical heads 52 and 53 is described as being sufficiently ensured with the disk 32 therebetween, but this is described for the sake of explanation, and in practice, the optical heads and The distance between them and the disk 32 is small.

Next, the operation of the disk loading mechanism 1 configured as described above will be described. First, FIG.
When the cartridge 30 is inserted into the disc loading mechanism 1 as shown in (1), the slider 40 to which the spring 41 is engaged is pushed by the tip of the cartridge 30, and the insertion detection sensor 42, which is a light shielding type optical sensor, is shielded from light. The plate blocks, and it is detected that the cartridge 30 has been inserted.

At the same time, when the loading motor 4 shown in FIG. 1 rotates in the loading direction, the carriage arm 1a descends along the vertical portion of the carriage groove 22, and the pin 43 is inserted into the drawing hole 34 of the sub tray 31. Thereafter, the carriage arm 1a moves horizontally along the horizontal portion of the carriage groove 22 by the action of the rack 3, and the sub-tray 31 is pulled out horizontally with the disk 32 mounted.

The sub-tray 31 slides on the disk tray 44 and horizontally pulls out a gap between the lower head 52 attached to the lower base body 50 and the upper head 53 attached to the upper base body 51. Go.
At this time, the disc tray 44 is connected to the tray base 48 mounted on the lower base body 50 and the disc tray 4.
4 are supported by a hinge member 47 connecting the hinge members 4, and the hinge member 47 can rotate around a hinge shaft 49. A predetermined cut is formed at a position corresponding to the optical head and the spindle motor 26 at the center of the sub-tray 31 and the disc tray 44.
These members do not come into contact with each other even during movement.

The hinge member 47 is pulled toward the cartridge 30 by a spring 46 in an initial stage so that the height does not change during loading. Then, when the disk 32 has moved to a predetermined position, the carriage arm 1 a comes into contact with the roller 45 attached to the disk tray 44. Carriage arm 1a even after contact
Keeps moving and presses the disc tray 44. Accordingly, the disc tray 44 moves in the loading direction along with the movement of the carriage arm 1a, and at the same time, moves down due to the action of the hinge member 47.

When the rack 3 reaches a predetermined position, the loading sensor 24, which is a light-shielded optical sensor, is blocked by the shutter 23, and based on this signal, the loading motor 4 stops and the movement of the carriage arm 1a stops. .

After that, by the spindle moving mechanism 25,
The spindle motor 26 moves up to a predetermined height, and carries the disk 32 on the disk tray 44. At the position where the ascending is completed, the optical disk 32 is supported on a turntable 27 attached to the upper part of the spindle motor 26, and the magnet 28 fixed to the turntable 27 attracts the magnetic hub 33 at the center of the optical disk 32. It is fixed and the loading process is completed.

As described above, after the disk 32 is loaded, the sub-tray 3
Since 1 itself descends, a predetermined interval is secured between the disc 32 and the sub-tray 31. Therefore, the distance for raising the spindle motor 26 can be suppressed, and the disk 32 can be positioned at an appropriate position between the optical heads 52 and 53.

[0030]

Since the present invention is constructed and functions as described above, in particular, according to the first aspect of the present invention, the disk loading mechanism moves the disk tray at a predetermined position following the movement of the sub-tray along the movement path. The provision of the tray separating means for separating from the moving path provides an excellent effect that a sufficient space can be secured between the disk and the sub-tray. Along with this, there is an excellent effect that the distance for raising the spindle motor can be suppressed, and the disk can be easily positioned at an appropriate position between the optical heads.

According to the second aspect of the present invention, since the base body is provided with the spindle moving mechanism for moving the spindle motor close to and away from the moving path, an excellent effect that the positioning with respect to the optical head can be performed easily. Occurs.

Further, according to the third aspect of the present invention, a magnetic hub is formed in a central area of the disk, and a predetermined magnet is provided on a turntable of the spindle motor, and the magnetic hub of the disk is attracted and fixed by the magnet. And Therefore, there is an excellent effect that the contact separation operation of the disk with respect to the turntable can be easily performed, and the disk loading mechanism having such a function can be realized with a simple structure.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional side view of some components of the disc loading mechanism disclosed in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc loading mechanism 1a Carriage arm 25 Spindle moving mechanism 26 Spindle motor 27 Turntable 28 Magnet 31 Sub-tray 32 Disk (optical disk) 33 Magnetic hub 44 Disk tray 47 Tray separation means (hinge member) 50 Base body 52 Optical head 53 Optical head

Claims (3)

(57) [Claims] 1. A sub-tray for carrying a disk and moving it to a predetermined position, a disk tray for supporting the sub-tray at the predetermined position, a carriage arm for urging a driving force for moving the sub-tray, A spindle motor that rotates at a predetermined position; and a base body that houses these components. Tray separation means that moves the sub-tray at a predetermined position following the movement of the sub-tray along the movement path to separate the disk tray from the movement path. Disc loading mechanism characterized by being equipped. 2. The disk loading mechanism according to claim 1, wherein said base body is provided with a spindle moving mechanism for moving said spindle motor toward and away from a moving path. 3. A magnetic hub is formed in a central area of the disk, a turntable is provided on the spindle motor, a predetermined magnet is provided on the turntable, and the magnet attracts the magnetic hub of the disk. 3. The disc loading mechanism according to claim 1, wherein: