JP3001070B2 - 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 suitable for, for example, selecting and reproducing an arbitrary one of a plurality of compact disks.

[0002]

2. Description of the Related Art Among disk devices, for example, there is a disk device in which a plurality of compact disks (CDs) are separately loaded at the same time and an arbitrary CD is selectively reproduced (referred to as a CD autochanger).

FIG. 11 is a plan view of one example of the above. Reference numeral 1 denotes a tray, which is arranged so as to be able to be drawn out from a cabinet (not shown). The tray 1 has a rotating shaft 1a protruding from the center thereof. Reference numeral 2 denotes a tray, which has a cylindrical shape whose lower part is open. This tray 2 has C
A circular mounting surface 3 for mounting D is recessed.
The three mounting surfaces 3 are arranged at a predetermined distance C from the center of the tray 2 and at a predetermined angular interval. A groove 4 is formed in the mounting surface 3 toward its center point. A hole 5 is provided at the center of the tray 2. Then, the rotating shaft 1a of the tray 1 and the hole 5 of the tray 2 are fitted and fixed, and the tray 2 is rotatably disposed. Reference numeral 6 denotes an optical pickup which slides on a chassis (not shown) (moves in the front-rear direction in FIG. 11).
It is arranged as possible. Reference numeral 7 denotes a disk crumb, which is arranged to be vertically movable. Then, when a CD selection operation is performed, the tray 2 rotates and an arbitrary mounting surface 3 is arranged at a predetermined position (a position corresponding to the disc crumb 7).
Next, when a play operation is performed, the disc crumb 7 rises to lift the CD from the mounting surface 3 and is chucked. Then, while the motor (not shown) connected to the disk crumber 7 rotates, the optical pickup 6 slides (moves forward in FIG. 11), thereby performing reproduction.

[0004]

By the way, as described above, the tray 2 is provided with three mounting surfaces 3 on each of which three CDs are separately arranged. Therefore, the diameter of the tray 2 needs to be at least twice as large as the diameter of the mounting surface 3 and twice as large as the distance C, which causes a problem that the disk device itself becomes large.

Therefore, an object of the present invention is to reduce the size of a disk drive.

[0006]

According to the present invention, in a disk device for selectively reproducing an arbitrary one from a plurality of disks, a first tray having a cam, and a first tray rotatable. A plurality of holes are provided above the cam, and a plurality of holes are provided at the upper portion of the cam, and a rotating disk for selecting the disk is supported on the rotating disk via a pin so as to be tiltable and vertically movable, and the lower surface has A plurality of second trays on which the discs are placed, having an engaging portion for passing through the hole of the turntable and engaging with the cam of the first tray; and The rotating disc is rotated so that the engaging portion of the second tray is engaged with the cam so that the second trays are arranged so as to three-dimensionally intersect with each other. The above second trays It is intended to be arranged so as not to overpass.

[0007]

First, a plurality of CDs are placed on a plurality of second trays 50, respectively. Next, when an arbitrary CD is selected, the turntable 3
0 rotates until the selected second tray 50 reaches a predetermined reproduction position. When the turntable 30 rotates, the contact shaft 59, which is the engaging portion of the second tray 50, engages with the rail 16, which is a cam, so that the second trays 50 cross each other three-dimensionally. For this reason, the width of the first tray 13 can be reduced by the three-dimensional intersection of the second trays 50, and the disk device can be downsized. Also, when playing a CD,
Since the second trays 50 are arranged so that they do not cross each other, the CD can be played back in a stable state.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a plan view of the disk device with the tray 13 pulled out. FIG. 1 shows a plane with a ceiling plate (not shown) removed. First, the overall configuration of the disk device will be described with reference to FIG.

A cabinet 10 has a box shape with an open front. Reference numeral 10a denotes a stopper having an L-shaped cross section, which is disposed at four appropriate positions. The stopper 10a regulates the upward movement of the tray 13 described later. 11 is a rail, and a cabinet 1
0 are set up on the left and right ends. The rail 11 guides the movement of the tray 13 described later in the sliding (front-back) direction. Reference numeral 12 denotes a switch for detecting the position of the tray 13, which is disposed on the rear side of the cabinet 10.
The switch 12 is for confirming that the tray 13 is stored in the cabinet 10.

Reference numeral 13 denotes a tray, which is a rotary plate 30 described later.
And a CD tray 50. This tray 1
3 is drawn out from the front of the cabinet 10 as shown in FIG. Hereinafter, the configuration of the tray 13 will be described with reference to FIGS. FIG. 2 is a plan view of the tray 13,
FIG. 3 is a sectional view taken along line II of FIG.

An elongated elliptical recess 13a is formed on the tray 13 before and after it. At the center of the recess 13a, a shaft 14 protrudes from the substrate 13b. This axis 1
4 is fitted into a hole 34 of the turntable 30 described later. Reference numeral 15 denotes a hole which has a substantially rectangular shape elongated in the front-rear direction. The hole 15 is formed at a position facing an optical pickup 73 and a disk clamper 72 described later.

Reference numeral 16 denotes a rail, which is arranged around the shaft 14. The rail 16 is used for a CD tray 50 described later.
Abuts on the contact shaft 59. Rail 16 is C
This is for regulating the vertical position of the D tray 50.
The rail 16 includes lane surfaces 16a to 16e. As shown in FIG. 3, the lane surfaces 16a and 16b are recessed from the reference plane L of the substrate 13b. Lane surface 16c
Is an uphill slope, and the lane surface 16d is a downhill slope. The lane surface 16e is set at a predetermined height as shown in FIG.

Reference numeral 17 denotes a rail, which is arranged on the outer periphery of the rail 16. The rail 17 comes into contact with a guide shaft 58 of the CD tray 50 described later. Rail 17
Is for regulating the tilt position and the vertical position of the CD tray 50. Therefore, the rail 17 is provided with a guard 18 in addition to the lane surfaces 17a to 17f. The lane surfaces 17a to 17c are recessed from the reference surface L of the substrate 13b (see FIG. 3). The lane surface 17d has an upward slope,
The lane surface 17e has a downward slope. The lane surface 17f is set at a predetermined height as shown in FIG.

As shown in FIG. 2, the guard 18 is provided upright adjacent to the inner periphery of the lane surfaces 17a to 17f. In addition, as shown in FIG.
The hole 15 is located between the holes 17 and 17c.

Reference numeral 19 denotes a stopper, which is arranged as a pair of right and left. The stopper 19 is for preventing the tray 13 from being pulled out of the cabinet 10. Further, four rollers 20 are arranged on the substrate 13b at a predetermined angular interval. The roller 20 comes into contact with a bottom surface of the turntable 30 described later to make the turntable 30 rotate smoothly.

A step 21 having a predetermined height is provided in front of the outer periphery of the recess 13a. The surface 21a of this step portion 21,
Reference numeral 21b contacts a bottom surface of a CD tray 50 described later. The surface 21a is an uphill slope as shown in FIG. The surface 21b is a flat surface. Reference numeral 22 denotes a step, which forms the same ellipse as the outer peripheral edge of the recess 13a. The step portion 22 is set slightly higher than the step portion 21 as shown in FIG. Surfaces 22a and 22b of step 22
Is in contact with the bottom surface of the CD tray 50. Surface 22a is shown in FIG.
As shown in FIG. Surface 22b
Is a flat surface.

Reference numeral 23 denotes a lane, which is connected in an elliptical shape. The lane 23 uses the left and right ends of the tray 13 and is set higher than the step 22. Lane 2
3 is composed of lane surfaces 23a to 23d. The lane surface 23a is a downward slope as shown in FIG. The lane surface 23b is a gentle uphill slope. The other lane surfaces 23c and 23d are flat surfaces.

A motor 24 is arranged on the right side of the rear side of the tray 13. The motor 24 has a gear 2
5 is driven. The gear 25 meshes with a gear 43 of the turntable 30 described later (see FIGS. 8 and 9).

Next, the structure of the turntable 30 arranged in the recess 13a of the tray 13 will be described. FIG.
FIG. 5 is a sectional view taken along line II-II of FIG.

As shown in FIG. 5, the rotary disk 30 has a cylindrical portion 31 at its center. An upper wall 33 having a screw hole 32 is arranged on the upper end side of the cylindrical portion 31. In the cylindrical portion 31, a hole 34 is formed below the upper wall 33. The diameter of the hole 34 is set slightly larger than the diameter of the shaft 14 of the tray 13.

A rotary tray 30 has a CD tray 50 to be described later.
Are arranged in three sets. Hereinafter, a set of tilting means will be described. Reference numeral 36 denotes a notch, which is arranged near the cylindrical portion 31. In addition, the notches 36 are arranged at three places around the cylindrical portion 31, respectively. Notch 36
As shown in FIG. 4, the elliptical portion 36a and the rectangular portion 36b are formed.
b and communicates with a part of the inner periphery thereof, and is thus integrated as a whole. The elliptical portion 36a regulates a movement amount of a contact shaft 59 of the CD tray 50 described later. The elliptical portion 36a is a portion that also serves as a relief for the disc crumb 72 disposed below the hole 15 of the tray 13. The rectangular portion 36b is formed over the moving range of the optical pickup 73 disposed below the hole 15 of the tray 13.

Reference numeral 37 denotes a projection, which is substantially semicircular. The protrusion 37 is arranged between the notch 36 and the outer peripheral edge of the turntable 30, as shown in FIG. Also, protrusion 3
Reference numeral 7 is set to a predetermined height as shown in FIG. The protruding portion 37 has a mounting surface 5 for the CD tray 50 on its upper surface.
5 contacts the lower surface.

Numeral 38 denotes a fulcrum, which is arranged on the outer peripheral edge of the turntable 30 at a predetermined angular interval (120 degrees in this example). The fulcrum 38 is set slightly higher than the protrusion 37, as shown in FIG. A hole 39 is formed in the upper surface of the fulcrum 38. The fulcrum portion 38 is a portion that forms a center of the tilt of the CD tray 50 by fitting a cylindrical portion 52 of the CD tray 50 described later into the hole 39.

Numeral 40 denotes a long hole, and a fulcrum 38 and a notch 36
It is arranged between. As shown in FIG. 4, the long hole 40 is an arc-shaped long hole centered on the fulcrum 38. The slot 40 is provided with a guide shaft 5 of a CD tray 50 described later.
8 is restricted. The other two sets of tilting means have the same configuration as described above, as shown in FIG.

The other configuration of the rotary disk 30 is as follows. Numerals 41 are engraved I to III, which are marks indicating the order of the CD tray 50. The position of the turntable 30 is detected by the mark 41 and a sensor arranged at a predetermined position. A V-shaped notch 45 is formed on the periphery corresponding to the mark 41 (see FIG. 4). Reference numeral 42 denotes a support piece, which is arranged on the back surface of the turntable 30. As shown in FIG. 4, the support piece 42 is formed in an arc shape near the fulcrum 38 and around the cylindrical portion 31. The support piece 42 is in contact with an appropriate portion of the recess 13 a of the tray 13 to make the rotation of the turntable 30 smooth. Reference numeral 43 denotes a gear, which is engraved on the outer peripheral surface of the turntable 30. Reference numeral 44 denotes a flange, which protrudes outward from the lower end of the outer peripheral edge of the turntable 30.

Finally, the configuration of the CD tray 50 that tilts and moves up and down on the tray 13 will be described. FIG. 6 shows C
FIG. 7 is a plan view of the D tray 50, and FIG. 7 is a sectional view taken along line III-III in FIG.

The CD tray 50 has a substantially circular plate shape as shown in FIGS. CD tray 50
In FIG. 6, a fulcrum 51 as shown in FIG. 6 is connected to the disk 54 and is integrated as a whole. As shown in FIG. 7, the fulcrum portion 51 has a tubular portion 52 and a concave portion 53 formed on the back surface thereof. The recess 53 is formed around the cylindrical portion 52. The cylindrical portion 52 is fitted into the hole 39 of the fulcrum portion 38 of the turntable 30. Thereby, the CD tray 50 can be connected to the turntable 30.

The disk portion 54 is a circle slightly larger in diameter than a CD. The disk portion 54 has a mounting surface 55 on its upper surface.
Is recessed. That is, as shown in FIG. 7, an edge 55 a set slightly higher than the mounting surface 55 protrudes from the outer periphery of the mounting surface 55. The movement of the CD is regulated by the edge 55a.

Reference numeral 56 denotes a notch, which is formed from the center of the disk portion 54 toward the front side. This notch 56 corresponds to FIG.
As shown in FIG. 5, the shape of the notch 36 of the turntable 30 is substantially the same. The notch 56 is formed in such a shape for the same reason as the notch 36 of the turntable 30, such as the escape of the disk crumb 72.

Numeral 57 denotes a wall, which protrudes upward from the outer periphery of the edge 55a of the mounting surface 55, as shown in FIGS. The wall 57 is provided for smoothly moving the CD tray 50 along the lane 23 of the tray 13 or the like. As shown in FIG. 6, the wall 57 is not formed in the right semicircular portion. The reason why the wall 57 is not formed in the right semicircular portion is that the CD trays 50 intersect with each other as shown in FIGS. 8 and 9 so as not to disturb the intersection. It is. On the right side of the notch 56, as shown in FIG. The stopper section 60 regulates the tilt range of the other CD tray 50. Reference numeral 58 denotes a guide shaft, which protrudes from the rear surface of the disk portion 54. The guide shaft 58 is disposed on the fulcrum 51 side (rear side) as shown in FIGS. The guide shaft 58 is fitted with play into the long hole 40 of the turntable 30 and moves along the lane surface 17.

Reference numeral 59 denotes a contact shaft, which protrudes from the back surface of the disk portion 54. 6 and 7.
As shown in FIG. 2, the fulcrum 51 is disposed on the right side in a direction orthogonal to the center of the cylinder 52 and the center of the disk 54. As shown in FIG. 7, the tip of the contact shaft 59 is formed in a spherical shape. The contact shaft 59 is fitted with play into the notch 36 of the turntable 30 and moves along the lane surface 16. Note that the guide shaft 58 and the contact shaft 59 are
When the mounting surface 55 is set in a horizontal state, it is set to have the same length as the reference surface L of the tray 13.

Next, the assembling of the disk device of this embodiment will be described. First, in order to attach the CD tray 50 to the turntable 30, the CD tray 50 is set at an appropriate position and the cylindrical portion 52 is set.
Into the hole 39 of the fulcrum 38 of the turntable 30. Then, with a pin (not shown) inserted from above the cylindrical portion 52, a coil spring (not shown) is inserted from below into a hole in the fulcrum portion 38 of the turntable 30. To fix the coil spring in this state, from below the CD tray 50,
A spring receiver (not shown) is inserted and fixed. Thus, the CD tray 50 is constantly urged toward the turntable 30 by the coil spring. However, CD tray 5
When an upward force acts on the CD tray 50,
Moves upward against the urging force of the coil spring. That is, the CD tray 50 is attached to the turntable 30 so as to be vertically movable. Also, the CD tray 50
The guide shaft 58 and the contact shaft 5
9 is tiltably attached within a range that can be moved by the long hole 40 and the notch 36 of the rotating disk 30. In addition,
The other two CD trays 50 are similarly attached to the turntable 30.

Next, in order to mount the rotary disk 30 with the CD tray 50 mounted thereon to the tray 13, the cylindrical portion 31 of the rotary disk 30 is fitted to the shaft 14 of the tray 13. In this state, the upper wall 33 of the cylindrical portion 31 of the turntable 30 is in contact with the tip end surface of the shaft 14 of the tray 13, and the turntable 30 is disposed at a predetermined height. Then, the turntable 30 is rotatably attached to the tray 13 by fitting the screws 35 shown in FIG. 1 into the screw holes 32 of the turntable 30 and the screw holes 14 a of the shaft 14 of the tray 13. In addition, the plate-shaped stopper piece 71
As shown in FIG. 1, it is arranged on a flange 44 of the turntable 30 and regulates upward movement of the turntable 30.

Finally, the tray 1 on which the turntable 30 is mounted
In order to attach the tray 3 to the cabinet 10, the tray 13 is slid from the front of the cabinet 10 and inserted.
This insertion is performed in a state where the rail receiver 26 and the stopper receiver 27 of the tray 13 shown in FIG. Do. The tray 13 is attached to the cabinet 10 so as to be slidable in the front-rear direction, as shown in FIG. At this time, the tray 13 is prevented from being pulled out of the cabinet 10 by the stoppers 10a, 19 and the like.

The operation of the disk device of this embodiment will be described with reference to FIG. 1 and FIGS.

First, when the open / close button (not shown) of the tray 13 is pressed, the tray 13 is moved to the cabinet 1.
0 (the state shown in FIG. 8) is pulled out of the cabinet 10. With the tray 13 pulled out (the state shown in FIG. 1), a CD (not shown) is
It is placed on the mounting surface 55 of the tray 50. By rotating the turntable 30 in this state, the remaining CD tray 50
Put a CD on it. Then, 3 placed on the tray 13
When selecting, for example, a CD on the CD tray (selected CD tray) 50a of the inscription 41 (I) from the CDs, the user presses a selection button (not shown). Then, since the motor 24 is driven to rotate the gear 25,
The rotating disk 30 meshing with the gear 25 rotates. As a result, as shown in FIG. 8, the selected CD tray 50a
The disk portion 54 tilts in a state where it contacts the lane surface 23a. In this state, the guide shaft 5 of the selected CD tray 50a is
8 is in contact with the lane surface 17f, and the contact shaft 59 is in contact with the lane surface 16e. At this time, the other two CD trays (the CD trays of inscriptions 41 (II) and (III)) 50 b and 5
0c, the CD tray 50b is, as shown in FIG.
The guide shaft 58 is disposed in contact with the lane surface 17a, and the contact shaft 59 is disposed in contact with the lane surface 16b. The CD tray 50b is held at a position where the disk portion 54 comes into contact with the lane surface 23b. In the CD tray 50c, the guide shaft 58 is disposed at a position facing the hole 15 of the tray 13, and the contact shaft 59 is disposed in contact with the lane surface 16b. Accordingly, as shown in FIG. 8, the other CD trays 50b and 50c are placed below the mounting surface 55 of the selected CD tray 50a with respect to the selected CD tray 50a. Are arranged to intersect. At this time, the height positions of the CD trays 50a to 50b are such that the selected CD tray 50a is located at a higher position, the next CD tray 50b is located at a lower position, and the CD tray 50c is located at a lower position.

Subsequently, the turntable 30 rotates, and the CD trays 50a to 50c move to the state shown in FIG. The selected CD tray 50a in this state is arranged at a position where the guide shaft 58 and the contact shaft 59 face the hole 15 of the tray 13. The selected CD tray 50a is held in a state where the disk portion 54 is in contact with the surface 22b of the step portion 22 of the tray 13.

The CD tray 50b is held in the state of the selected CD tray 50a in FIG. Therefore,
As shown in FIG. 9, the positional relationship between the selected CD tray 50a and the CD tray 50b is such that the CD tray 50b intersects the mounting surface 55 of the selected CD tray 50a.
The CD tray 50c is arranged at a position where the guide shaft 58 and the contact shaft 59 climb the slopes of the lane surfaces 16a and 17d. The CD tray 50c is arranged in a state where the disk portion 54 is in contact with the lane surface 23b.

Further, when the turntable 30 is rotated, FIG.
The CD trays 50a to 50c move to the state shown in FIG. FIG. 10 is a diagram showing the final stop position of the selected CD tray 50a. In this figure, the selected CD tray 50a
The guide shaft 58 is arranged in a state in which the guide shaft 58 contacts the lane surface 17c, the contact shaft 59 contacts the lane surface 16b, and the disc portion 54 contacts the lane surface 23d. In this state, the mounting surface 55 of the selected CD tray 50a is held horizontally. That is, the height of the lane surface 23d of the tray 13 is C
When the disk portion 54 of the D tray 50 is in contact with the lane surface 23d, the guide shaft 58 and the contact shaft 59 are
The setting surface 55 is set so as to be in a horizontal state in a state where the mounting surface 55 abuts on c and 16b. In order to securely fix the turntable 30 at this stop position, a notch 45 of the turntable 30 is engaged with a V-shaped stopper provided on a chassis (not shown).

In this state, as shown in FIG. 10, the notch 36 of the turntable 30 and the notch 56 of the selected CD tray 50a are arranged at the same position with respect to the hole 15 of the tray 13. In this state, as shown in FIG. 10, the disk clamper 72 and the optical pickup 73 arranged on the chassis face the hole 15 of the tray 13, the notch 36 of the turntable 30, and the notch 56 of the selected CD tray 50a, respectively. ing. In other words, the disc crumb 72 or the optical pickup 73 can abut or oppose the CD.

As shown in FIG. 10, the CD tray 50b has the guide shaft 58 on the lane surface 17b, the contact shaft 59 on the lane surface 16b, and the disk portion 54 on the lane surface 23d.
Are arranged in contact with each other. CD tray 50c
The guide shaft 58 is arranged in a state in which the guide shaft 58 contacts the lane surface 17f, the contact shaft 59 contacts the lane surface 16e, and the disc portion 54 contacts the lane surface 23c. Therefore, in this state,
As shown in FIG. 10, the CD trays 50 are arranged without crossing each other.

When the play button (not shown) is pressed after the above selection operation is completed, the disc
2 rises and lifts the CD from the mounting surface 55 of the CD tray 50. As a result, the CD is chucked in cooperation with a chucking mechanism (not shown), and reproduction is performed.

In the disk device of this embodiment, a plurality of C
The D tray 50 is arranged so as to be tiltable and vertically movable with respect to the tray 13, and the CD trays 50 cross each other at the time of selecting a CD. It is possible to reduce the size of the disk device.

In the above embodiment, the tray 13
Although the number of CD trays 50 arranged on the top is three,
The number of trays is not limited to this. Although the above embodiment is an example of a disk device for a compact disk, the present invention can be applied to other disks. Further, the present invention can be applied to a disk device of a type capable of recording in addition to reproduction.

[0045]

According to the present invention, the plurality of second trays on which the discs are placed are arranged so as to be tiltable and vertically movable and intersect at the time of selecting a disc. The width of the disk unit can be reduced by the amount
The size can be reduced. In addition, during reproduction of the disc, the second trays are arranged so that they do not cross each other, so that reproduction can be started in a stable state.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment.

FIG. 2 is a plan view of a tray.

FIG. 3 is a sectional view taken along the line II of FIG. 2;

FIG. 4 is a plan view of the turntable.

FIG. 5 is a sectional view taken along line II-II of FIG.

FIG. 6 is a plan view of a CD tray.

FIG. 7 is a sectional view taken along the line III-III in FIG. 6;

FIG. 8 is a diagram showing a state where a CD tray is tilted and moved up and down.

FIG. 9 is a diagram showing a state in which a CD tray is tilted and moved up and down.

FIG. 10 is a diagram showing a state where a CD tray is tilted and moved up and down.

FIG. 11 is a plan view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cabinet 13 Tray 13a Depression 13b Substrate 15 Hole 16, 17 Rail 16a-16e, 17a-17f Lane surface 18 Guard 21,22 Stepped portion 23 Lane 23a-23d Lane surface 30 Turntable 31 Cylindrical portion 36 Notch 38 Support point portion 40 Length Hole 50 (50a to 50c) CD tray 52 Tube part 54 Disk part 55 Mounting surface 56 Notch 58 Guide shaft 59 Contact shaft 72 Disk crumb 73 Optical pickup

Claims (1)

(57) [Claims] 1. A disc apparatus for selecting and reproducing an arbitrary disc from among a plurality of discs, comprising: a first tray having a cam; A rotating disk for selecting the disk, having a plurality of holes, supported by the rotating disk via a pin so as to be tiltable and vertically movable, and having a lower surface passing through the hole of the rotating disk and A plurality of second trays having an engaging portion for engaging with the cam of the first tray, and a plurality of second trays on which the discs are mounted; When the engaging portion of the second tray is engaged with the cam, the second trays are arranged so that they intersect three-dimensionally, and when the disc is played, the two trays intersect three-dimensionally. Not to be placed Disk apparatus according to claim.