JP2953845B2 - 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. 36 is a plan view showing an example of such a case. Reference numeral 1 denotes a tray, which is arranged so as to be able to be pulled 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
A circular mounting surface 3 for mounting a CD is recessed. The mounting surface 3 is formed at three places with a predetermined distance C and a predetermined angular interval from the center of the tray 2. Placement surface 3
Is formed with a groove 4 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 is slidably (movable in the front-rear direction in FIG. 36) on a chassis (not shown). 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 the optional mounting surface 3 is rotated.
Are arranged at a predetermined reproduction position (a position corresponding to the disc crumb 7). Subsequently, the disk clamper 7 is lifted to lift the CD from the mounting surface 3 and is chucked. Then, a motor (not shown) connected to the disk crumber 7 rotates, and the optical pickup 6 slides (moves forward in FIG. 36), thereby performing reproduction.

[0004]

By the way, as described above, the tray 2 has 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, there is provided a disk apparatus for selecting and reproducing an arbitrary one of a plurality of disks, a first tray having a wall formed therein,
A second tray is provided so as to be rotatable along the wall of the first tray and has a plurality of mounting surfaces on which disks are mounted, and the second tray is located at the center of the first tray. And the second tray moves along the wall of the first tray.

[0007]

A plurality of discs 9 are placed on a plurality of placement surfaces 97 to 99 of the second tray 95, respectively. When an arbitrary disc 9 is selected, the second tray 95 rotates to a predetermined reproduction position. At this time, the second tray 95 rotates eccentrically with respect to the projection 82 arranged at the center of the first tray 70. Since the second tray 95 is disposed eccentrically with respect to the projection 82 of the first tray 70, the second tray 95 is
The tray 70 can be rotated while being regulated along the wall 84 of the tray 70. Therefore, the width of the first tray 70 can be reduced, and the size of the disk device can be reduced.

[0008]

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 70 pulled out. FIG. 1 shows a plane with a ceiling plate and the like (not shown) removed.

First, the overall configuration of the disk drive will be described with reference to FIG. 10 is a cabinet, 70 is a tray, and 95 is a CD tray. The cabinet 10 is configured so that the tray 70 can be pulled out. Tray 70 is C
The D tray 95 is configured to be rotatable.

Next, the structure of the cabinet 10 is shown in FIGS.
A description will be given based on FIG. FIG. 2 is a plan view of the cabinet, and FIG. 3 is a diagram showing a state before the drive mechanism of the tray 70 and the chucking mechanism of the CD 9 are attached to the cabinet 10. FIG. 4 is an enlarged sectional view taken along line II of FIG.
FIG. 5 is an enlarged sectional view taken along line II-II of FIG.

The cabinet 10 is integrally formed by a substrate 11, a pair of side plates 12, and a rear plate 13. Reference numeral 14 denotes a concave surface, and the concave surface 14 is formed substantially at the center of the substrate 11. A drive mechanism for the tray 70 and a cam mechanism for the disk support 56 to be described later are mounted on the concave surface 14. A motor mounting surface 15 and a cam mounting surface 16 as shown in FIGS. 3 to 5 are formed in the concave surface 14.

Hereinafter, the structure of the drive mechanism of the tray 70 will be described. The motor 17 is mounted on the bottom surface of the motor mounting surface 15 as shown by a broken line in FIG. The pulley 18 of the motor 17 projects above the motor mounting surface 15. Reference numeral 19 denotes a rotor.
9 is arranged near the motor mounting surface 15. Rotor 19
As shown in FIGS. 9 and 10, the pulley portion 20 and the gear portion 21 are integrally formed. 9 is a diagram showing an outline of a driving mechanism, and FIG. 10 is an exploded perspective view of the cabinet 10.

The rotor 19 is arranged in the cabinet 10 such that the large-diameter pulley portion 20 is on the upper side and the small-diameter gear portion 21 is on the lower side. The belt 22 is mounted on the pulley 18 and the pulley section 20, as shown in FIGS.

A gear 24 is provided on the front side of the cam mounting surface 16. The gear 23 is arranged between the gear 24 and the rotor 19. As shown in FIGS. 2, 9, and 10, the gear 23 has a large-diameter gear portion 23a and a small-diameter gear portion 23b integrally formed. The gear 23 is arranged in the cabinet 10 such that the small-diameter gear portion 23b is on the upper side and the large-diameter gear portion 23a is on the lower side. And rotor 1
The gear portion 21 of the gear 9 and the gear portion 23a of the gear 23 mesh with each other as shown in FIG.

As shown in FIGS. 6 to 8, the gear 24 is formed by integrally forming upper, middle, and lower three-stage gear portions 25-28. FIG. 6 is a bottom view of the gear 24, and FIG.
6 is a sectional view taken along line III-III in FIG. 6, and FIG. 8 is a sectional view taken along line IV-IV in FIG.

As shown in FIGS. 7 and 8, the gear portions 25 to 28 are formed so that their diameters are sequentially reduced from top to bottom. The gear portions 25 and 26 are formed above and below the upper stage of the gear 24, respectively. That is, as shown in FIGS. 7 and 8, the upper stage of the gear 24 has two gear portions 2 above and below it.
5, 26 are formed. The gear portion 25 is formed over a predetermined angular range θ1, as shown in FIG. Further, the gear portion 26 is formed over a predetermined angular range θ2.

The gear portions 25 and 26 are, as shown in FIG.
The gear teeth 25a and 26a serving as the start ends are formed so as to be at the same position in the upper and lower directions. Therefore, the gear 25
And 26 are set such that the angular ranges θ1 and θ2 are the same range with respect to the gear teeth 25a and 26a.

The gear portion 27 is formed at a middle stage of the gear 24, as shown in FIGS. The gear portion 27 is formed over the entire peripheral surface of the gear 24. The gear section 28 is shown in FIG.
As shown in FIG. 8 and FIG. The gear portion 28 has a predetermined angular range θ as shown in FIG.
3 are formed. Therefore, no gear teeth are formed in portions other than the angular ranges θ1 to θ3. Note that the angular range θ
1 and θ2 are set in consideration of the distance in which the tray 70 is slid. The angle range θ3 is set in consideration of, for example, an angle at which the support 54 is tilted, which will be described later.

As shown in FIGS. 2 and 8, a stopper 29 is provided on the gear 24 so as to protrude upward from an appropriate portion. The stopper 29 is provided for the tray 7 at a predetermined time.
This is to restrict 0 from being extracted. As shown in FIGS. 6 and 7, the operating rod 30 is provided on the gear 24 so as to protrude downward from an appropriate portion. The operation lever 30 is provided with an operation member 46 of a position detection body 46 described later.
This is for operating a.

The gear 23b of the gear 23 and the gear 27 of the gear 24 mesh with each other as shown in FIG. Gear part 2
7 has the gear teeth formed on the entire peripheral surface of the gear 24 as described above, so that the rotation of the motor 17 is always transmitted to the gear 24.

The gear 31 has, as shown in FIG.
4 near the middle of the left side. The gear 33 is provided on the left front side of the concave surface 14. That is, the gears 31, 33
Are arranged in series in the front-rear direction as shown in FIG.
As shown in FIG. 10, the gears 31 and 33 are formed by integrally forming large-diameter gears (large-diameter gears) 31a and 33a and small-diameter gears (small-diameter gears) 31b and 33b. The gears 31 and 33 are arranged in the cabinet 10 such that the large-diameter gear portions 31a and 33a are on the upper side and the small-diameter gear portions 31b and 33b are on the lower side. The gear 31 and the gear 33
Are set to be the same pitch circle.

The gear portion 25 of the gear 24 and the small-diameter gear portion 31b of the gear 31 mesh with each other as shown in FIGS. The gear portion 25 has the gear teeth formed only in the predetermined angular range θ1 as described above.
Rotates only over the angular range θ1 of the gear portion 25.

A gear 32 is disposed between the gears 24 and 33, as shown in FIG. This gear 32 has a gear 33
Is rotated in the direction opposite to the gear 31. The gear 32 meshes with the gear portion 26 of the gear 24 as shown in FIGS. The gear 32 meshes with the small-diameter gear portion 33b of the gear 33.

Since the gear portion 26 is formed only in the angle range θ2 having the same angle as the angle range θ1 of the gear portion 25 as described above, the gear 33 is formed in the angular range θ2 of the gear portion 26.
Rotate only over Therefore, the gears 31 and 33 rotate the same amount in different rotation directions. Gears 31 and 33
Large-diameter gear portions 31a and 33a mesh with a gear portion 93 of the tray 70 described later.

A cam 35 is provided on the cam mounting surface 16 as shown in FIGS. Hereinafter, the configuration of the cam 35 will be described with reference to FIGS. 11 is a plan view of the cam 35, FIG. 12 is a cross-sectional view taken along line VV of FIG. 11,
FIG. 13 is a development view of the cam surface.

The cam 35 has a substantially cylindrical shape, and its peripheral surface 3
Flanges 36a and 36b are integrally formed on the upper and lower ends of 5a. As shown in FIGS. 10 and 12, a cam surface 37 is provided on the peripheral surface 35a so as to project outward. The cam surface 37 is to be engaged with an engagement piece 58 of the support 54 described later. The cam surface 37 is, as shown in FIG.
It is formed with a predetermined inclination from the lower flange 36b to the upper flange 36a.

On the peripheral surface 35a of the cam 35, operating rods 38a, 38b are formed at two positions on the upper flange 36a side at an angle substantially corresponding to the rotation angle of the cam 35.
The operation rods 38a and 38b are provided with a position detecting body 47 described later.
The operator 47a is operated. Also, the cam 35
As shown in FIGS. 2, 11 and 12, a gear 39 is integrally formed on the upper surface of the gear. The gear portion 39 is formed over a predetermined angular range θ4, as shown in FIG. The cam 35 is disposed on the cabinet 10 such that the gear 39 is on the upper side.

The gear portion 28 of the gear 24 and the gear portion 39 of the cam 35 mesh with each other as shown in FIG. Since the gear portion 39 is formed only in the angular range θ4 as described above, the cam 35 rotates only over the angular range θ4 of the gear portion 39. Therefore, the tray 7 is driven by one motor 17.
0 and tilting of the support member 54 described later.

As shown in FIGS. 2 and 11, the cam 35 has a substantially V-shaped engaging portion 40 on the upper flange 36a.
a, 40b are formed. The engagement portions 40a, 40b
Engages with a locking piece 43 of a stopper 42 described later. Note that these gears 23, 24, 31 to 33, etc.
It is rotatably attached to the support shafts 41a to 41g as shown in FIG. These support shafts 41a to 41g are
4 is set up.

A stopper 42 is provided on the right side of the cam mounting surface 16 as shown in FIG. This stopper 42
Its planar shape is substantially L-shaped. At the left end of the stopper 42, a locking piece 43 protrudes. Stopper 42
Are the engagement portions 40a, 40b of the locking piece 43 and the cam 35.
Are arranged to be able to engage with each other. The stopper 42 is shown in FIG.
As shown in the figure, the right side spring receiving portion 42a is provided to project upward. The stopper 42 is supported by a support shaft 41h, and tilts around the support shaft 41h.

The concave surface 14 is provided near the support shaft 41h, as shown in FIG.
A spring receiver 44 as shown in FIG. As shown in FIG. 2, a spring 45 is mounted between the spring receiving portion 42a of the stopper 42 and the spring receiving portion 44. Therefore, the stopper 42 is always urged clockwise by the spring 45. Then, when a predetermined or more rotational force is applied to the cam 35, the stopper 42 tilts counterclockwise against the urging force of the spring 45. As a result, the cam 35 is released from the engagement with the stopper 42 and rotates.

As shown in FIG. 25, two position detectors 46 and 47 are disposed on the right side of the concave surface 14.
The position detector 46 is arranged such that the operation element 46 a can abut on the operation rod 30 of the gear 24. In addition, the position detector 4
7 is the operation lever 47a of the cam 35
8b.

The position detectors 46 and 47 are driven by the gear 24 or the cam 35 depending on the direction in which the operating members 46a and 47a are tilted clockwise or counterclockwise.
This is for detecting the rotation direction of. This is so configured that the tray 70 can be pulled out even in the play state, as will be described later, in the disk device of the present embodiment, so that the rotational state of the gear 24 or the cam 35 is determined by the position detectors 46 and 47. Detectable.

Next, the structure of the chucking mechanism will be described. This chucking mechanism is configured so that the tray 70 can be pulled out even in the play state. As shown in FIGS. 2 and 5, a notch 51 is formed in the substrate 11 on the rear side of the concave surface 14. On the notch 51,
As shown in FIGS. 5 and 31, the holding body 52 is
Are connected in parallel with the substrate 11 from the upper end. That is, the holder 52 is formed on the side opposite to the direction in which the tray 70 is pulled out. As shown in FIG. 2, a chucking member 53 is provided at the tip of the holding body 52.

As shown in FIGS. 2 and 31, the support 54 is fitted with play into the notch 51. Support 5
As shown in FIG. 31, the shaft 55 is pivotally supported near the rear center of the cabinet 10, and the support 54 is arranged to be tiltable with respect to the cabinet 10. Support 5
As shown in FIGS. 2 and 31, a disk support 56 is provided on the portion 4 corresponding to the chuck member 53.
A motor (not shown) is connected to the disk support 56. Also, the support 54 has a dashed line in FIG.
As shown in FIG. 1, an optical pickup 57 is arranged behind the disk support 56 so as to be slidable in the front-rear direction.

As shown in FIG. 31, an engagement piece 58 is provided on the support 54 so as to protrude forward from the lower end edge of the front end. The engagement piece 58 is formed so as to engage with the cam surface 37 of the cam 35. The support 54 tilts about its axis 55 as shown by the solid line and the two-dot chain line in FIG. That is, the rotation of the cam 35 causes the engagement piece 58 to move in the vertical direction along the inclination of the cam surface 37, so that the support 54 tilts. Therefore, when CD9 is chucked, as shown by the two-dot chain line in FIG.
The support 54 is set to be in a horizontal state. The reason why the chucking mechanism is arranged on the opposite side (rear side) of the tray 70 in the drawing direction is to prevent the chucking mechanism from hindering the tray 70 from being pulled out.

As shown in FIGS. 1 to 4, the cabinet 1
Rails 61 are integrally formed on the left and right ends of the zero. The rail 61 guides the movement of the tray 70 in the sliding (front-back) direction. 62 and 63 are stoppers,
The stoppers 62 and 63 are formed integrally with the cabinet 10.

As shown in FIGS. 2 to 4, the stoppers 62 are formed at appropriate positions on the left and right ends of the cabinet 10, respectively.
The upward movement of the tray 70 is restricted. The stopper 63 is formed near the rail 61 as shown in FIGS. 1 to 4, and prevents the tray 70 from being pulled out of the cabinet 10. The stopper 63 is formed at a position where the tray 70 is pulled out until the two mounting surfaces 97 to 99 of the CD tray 95 can be exposed, as shown in FIG.

Reference numeral 64 denotes a switch for detecting the position of the tray 70. The switch 64 is disposed on the rear side of the cabinet 10 as shown in FIGS.
Is stored in the cabinet 10.

The structure of the tray 70 will be described with reference to FIGS. FIG. 14 is a plan view of the tray 70, and FIG.
FIG. 7 is a diagram showing a state before a drive mechanism of the CD tray 95 is attached to the tray 70. 16 is an enlarged sectional view taken along line VI-VI of FIG. 15, and FIG. 17 is an enlarged sectional view taken along line VII-VII of FIG. 18 and 19 are views showing a drive mechanism of the CD tray 95, and FIGS. 20 and 21 are exploded perspective views of the tray 70.

The tray 70 has a motor mounting portion 70a on the right rear side and gear mounting portions 70b, 70b at two locations near the center.
c are respectively formed. The gear attachment portions 70b and 70c are connected. FIGS. 15 to 1 show the gear mounting portion 70b.
As shown in FIG. 7 and FIG. 20, a hole 70g is formed.
As shown in FIG. 15, the gear mounting portion 70c has a support shaft 70d and a recess 70e in the center thereof, and a square hole 70f formed on the right of the recess 70e.

A motor 71 is mounted on the tray 70 at a motor mounting portion 70a. As shown in FIGS. 18 and 21, a worm shaft 72 is rotatably attached to the bottom surface of the tray 70, as shown in FIGS. The worm shaft 72 has a pulley 73 at one end and a gear portion 74 at the other end. And the worm shaft 72
The pulley 73 is disposed so that the pulley 73 faces the motor mounting portion 70a and the gear portion 74 faces the square hole 70f. The pulley 73 of the worm shaft 72 and the pulley 71a of the motor 71 include:
As shown in the broken line in FIG. 18 and in FIG. 19, the belt 75 is hung.

As shown in FIG. 18, the gear 76 is rotatably mounted on a support shaft 70d of a gear mounting portion 70c.
As shown in FIGS. 19 and 20, the gear 76 is formed by integrally forming a large-diameter gear portion 76a and a small-diameter male screw-shaped gear portion 76b. The gear portion 76b of the gear 76 has a recess 70 so as to mesh with the gear portion 74 of the worm shaft 72.
e.

The gear mounting portion 7 is provided on the bottom of the tray 70.
A support plate 77 as shown in FIG. 21 is attached to a portion corresponding to 0b. The gear 79 is rotatably disposed on the support shaft 78 of the support plate 77, as shown in FIGS. As shown in FIG. 20, the gear 79 has a concave portion 80 formed on one surface (upper surface). The recess 80 is shown in FIG.
And a support plate 81 as shown in FIG. The support plate 81 has a protrusion 82 at the center thereof.
The support shafts 83 project from the center and away from each other in the same direction. The protrusion 82 fits with the support shaft 78 of the support plate 77, and the support shaft 83 fits with the cylindrical portion 96 of the CD tray 95.

As shown in FIGS. 18 and 19, the gear 79 has a large-diameter gear portion 79a and a small-diameter gear portion 79b.
Are integrally formed. And the gear 79 is the gear portion 7
9b and the gear portion 76a of the gear 76 are arranged so as to mesh with each other. The gear portion 79a meshes with a gear portion 102 of a CD tray 95 described later, as shown by a two-dot chain line in FIG.

FIG. 14, FIG. 16 and FIG.
As shown in FIG. 7, the wall portion 84 is formed in a substantially elliptical shape. The wall portion 84 is not formed on the left side of a notch 87 described later. The wall 84 has straight portions 84a to 84e and curved portions 84f to 84i. Also, the tray 70
, A groove 85 is recessed between the wall portion 84 and the gear mounting portions 70b, 70c. A lane surface 86 is formed between the wall 84 and the groove 85.

As shown in FIGS. 14 and 16, the tray 70 has a notch 87 formed in the center on the rear side thereof, that is, in a portion facing the disk support 56 and the optical pickup 57. The notch 87 is formed to allow the disk support 56 and the like to escape. The notch 87 allows the tray 70 to be pulled out of the cabinet 10 when the CD 9 is chucked.

As shown in FIG. 14, a light emitting element 88 and a light receiving element 89 as sensors are arranged on the tray 70 near the right rear side of the groove 85 so as to face each other. This sensor 8
Reference numerals 8 and 89 denote detection bodies 104 to 104 of a CD tray 95 described later.
It is arranged at a site corresponding to a narrow intersection T between the loci of 106.

As shown in FIG. 17, the tray 70 is provided with a rail receiver 90 at a position opposing the rail 61 of the cabinet 10 and a stopper receiver 91 at a position opposing the stopper 62 of the cabinet 10. Also,
The tray 70 has a gear 3 disposed in the cabinet 10.
A gear portion 93 is formed at a portion corresponding to 1 and 33. The gear portion 93 is for smoothly and properly pulling out the tray 70, and meshes with the gears 31 and 33.

Further, engaging pieces 94 are formed on the tray 70 at appropriate portions corresponding to the gears 24 arranged in the cabinet 10 as shown by the broken lines in FIG. When the gear 24 reaches a predetermined rotation angle (the chucking state of the CD 9), the stopper 29 of the gear 24 faces the engaging piece 94 of the tray 70, and the pulling out of the tray 70 is restricted. The front panel 65 as shown in FIG. 21 is attached to a cabinet body (not shown).

The structure of the CD tray 95 is shown in FIGS.
It will be described based on. FIG. 22 is a plan view of the CD tray 95, FIG. 23 is an enlarged sectional view taken along line VIII-VIII of FIG.
4 is an enlarged sectional view taken along line IX-IX of FIG.

As shown in FIGS. 1 and 22, the CD tray 95 has a triangular shape with three arc sides. A cylindrical portion 96 is formed at the center of the CD tray 95 as shown in FIGS. Also, the CD tray 95 has
On the upper surface, mounting surfaces 97 to 99 for mounting a CD are formed at three locations with a predetermined angular interval (120 degrees in this example).

As shown in FIGS. 1, 22, and 23, the CD tray 95 has mounting surfaces 97 to 9 from its outer periphery.
A notch 100 is formed toward the center of the CD tray 95 on the same line as the center of the CD tray 9. The notch 100 is formed up to the vicinity of the center of the mounting surfaces 97 to 99. And
The notch 100 is placed from the outer periphery of the CD tray 95 to the mounting surface 97-9.
The reason why the CD tray 95 is formed toward the center of the tray 9 is to prevent the CD tray 95 from colliding with the disk support 56 or the optical pickup 57 when the tray 70 is pulled out in the chucking state. The notch 100 is for making the CD 9 face the disk support 56 and the optical pickup 57.

As shown in FIGS. 1 and 24, the CD tray 95 is formed with a concave portion 101 from the outer periphery toward the outer periphery of the mounting surfaces 97 to 99. This recess 101
The notches 100 are formed at two places with respect to the mounting surfaces 97 to 99 at the two places. The recess 101 is, as shown in FIG.
It is set to be slightly lower than the mounting surfaces 97 to 99.
The concave portion 101 is a portion for allowing the CD 9 to be easily removed from the mounting surfaces 97 to 99.
That is, a space is provided by the recess 101 such that a fingertip can enter the lower surface of the CD 9.

As shown in the broken line of FIG. 22 and in FIG. 23, the gear portion 102 is formed on the CD tray 95 with the cylindrical portion 96 as the center. The gear portion 102 is formed inside the notch 100 of the mounting surfaces 97 to 99. The gear portion 102 is formed in an internal tooth shape as shown in FIGS. 23 and 24, and the gear portion 79a of the gear 79 arranged on the tray 70.
Meshes with The gear ratio between the gear portion 102 and the gear 79 is set to be 3: 2 as an example.

As shown by the broken line in FIG. 22, the CD tray 95 has an arc-shaped contact piece 10 near its outer periphery on the back surface.
3 and detection pieces 104 to 106 inside the contact piece 103.
Are formed in three places. The contact piece 103 and the detection piece 10
As shown in FIG. 23 and FIG. 24, 4 to 106 project downward. Detection pieces 104 to 106
Is set to be longer than the contact piece 103 as shown in FIG.

The tip of the contact piece 103 contacts the lane surface 86 of the tray 70 to make the rotation of the CD tray 95 smooth. In addition, the tips of the detection pieces 104 to 106 move in the grooves 85 of the tray 70.

When the detecting pieces 104 to 106 pass between the light emitting element 88 and the light receiving element 89, the CD tray 95
Of the mounting surfaces 97 to 99 are detected. In the state of FIG. 22, the detection piece 104 for detecting the first mounting surface 97 is disposed on the front side, and the second mounting surface 9 is disposed on the left side.
The detection piece 105 for detecting the third mounting surface 99 is disposed on the right side of the detection piece 105 for detecting the third mounting surface 99. As shown in FIGS. 22 and 23, the CD tray 95 has protrusions 97 a to 97 a slightly higher than the mounting surfaces 97 to 99 on the outer peripheral portion between the notch 100 and the recess 101.
99a are respectively formed. These protrusions 97a to 99a
Is for regulating the movement of CD9.

Next, the operation of the disk device of this embodiment will be described. First, the operation of the drive mechanism for pulling out the tray 70 from the cabinet 10 will be described with reference to FIGS.

In the disk device of this embodiment, the tray 70 can be pulled out in the stop state, and in addition to the CD 9
Of the tray 70 even in the chucking state, that is, in the play state.
Has been made to be able to draw out. Therefore, in this example, as shown in FIG.
The open / close buttons 66, 67 of the front panel 65
It is distributed individually. The open / close button 66 is for pulling out the tray 70 in the stop state. Open / close button 67
This is for pulling out the tray 70 in the play state.

When the open / close button 66 is pressed, the motor 17 rotates to rotate the gear 24 clockwise.
At this time, the gear 24 meshes with the gear portion 39 of the cam 35 but does not mesh with the gears 31 and 32. When the gear 24 rotates, the cam 35 rotates counterclockwise to release the chucking, and then the gear portion 25 of the gear 24 is rotated.
And the small-diameter gear portion 31b of the gear 31
Is moved forward. Therefore, the tray 70 is pulled out to the state shown in FIG. At this time, the gear 33
The gear 32 rotates counterclockwise because it meshes with the gear 93 of the tray 70, but the gear 32 that rotates clockwise
Is not engaged with the gear 24 rotating clockwise, so that there is no problem.

Since the gear 24 rotates clockwise, as shown by the two-dot chain line in FIG.
Tilts the operator 46a of the position detector 46 in the counterclockwise direction. Thus, it is detected that the tray 70 has been pulled out during the stop, and the detection signal is supplied to the control system.

Next, after the tray 70 is pulled out of the cabinet 10 to the state shown in FIG.
D9 is placed on the placement surfaces 97 to 99 of the CD tray 95.
When the open / close button 66 is pressed again in this state, the motor 17 rotates to rotate the gear 24 in the counterclockwise direction. As a result, the gear 31 rotates clockwise, so that the tray 70 is pulled back backward and stored in the cabinet 10.

To select CD9, three change buttons 68a to 68c arranged in the center of the upper end of the front panel 65
Then, two change buttons 68d and 68e (see FIG. 21) arranged at substantially the right center of the front panel 65 are pressed. The change buttons 68a to 68c can directly select the mounting surfaces 97 to 99, and the change buttons 68d and 68e rotate the CD tray 95 in the forward and reverse directions by 1/3 each so that the mounting surfaces 97 to 99 are changed. It is something to move.

For example, when a CD on the first mounting surface 97 is selected, the CD tray 95 in the state shown in FIG. 1 is rotated by 120 degrees, as shown in FIG. 97 must correspond to the disk support 56 or the like. That is, the CD tray 95 is rotated to the reproduction position on the first mounting surface 97. Hereinafter, the operation of the mechanism for rotating the CD tray 95 will be described with reference to FIG. 14 and FIGS.

First, when the change button 68a is pressed, the motor 71 rotates to rotate the gear 79 clockwise. At this time, as shown in FIG. 26, the gear 79 is engaged with the gear portion 102 of the CD tray 95. The CD tray 95 is configured such that the point at which the gear 79 and the gear portion 102 mesh with each other, the protrusion 82, and the center P are in a straight line. Therefore, the gear portion 1 of the CD tray 95
The moment M generated at 02 acts on the support shaft 83. C
Since the D tray 95 is fixed to the protruding portion 82 via the support shaft 83, the reaction moment Q
Occurs. Therefore, the CD tray 95 rotates clockwise as indicated by an arrow R in FIG. This principle applies a planetary gear mechanism. Then, since the center P of the CD tray 95 rotates eccentrically with respect to the projection 82 arranged at the center of the lane surface 86, the CD tray 95
The tray 95 rotates while being eccentric along the wall 84 as shown in FIG. In this case, since the CD tray 95 rotates while being regulated by the wall portion 84, the support plate 81 rotates in a direction opposite to the R direction. The CD tray 95 rotates while its center P is eccentric with a constant distance L with respect to the center (projection 82) of the tray 70.

In the CD tray 95 in which the notch 100 of the second mounting surface 98 corresponds to the disk support 56 in the state of FIG. 1, the projection 97 a of the first mounting surface 97 is It is in contact with the front side of the straight portion 84b. CD in this state
The positional relationship between the center P of the tray 95 and the protrusion 82 is such that the center P is located on the front side of the protrusion 82.

Subsequently, when the gear 79 rotates clockwise, the CD tray 95 rotates clockwise while being eccentric, as shown in FIG. And CD tray 9
When the tray 5 moves from the state shown in FIG. 1 to the state shown in FIG. 27, the CD tray 95 is formed such that the peripheral surface between the first mounting surface 97 and the third mounting surface 99 has a straight portion 84 a Abut the center of the

In the state of FIG. 27, that is, in the CD tray 95 in which the notch 100 of the first mounting surface 97 is horizontal with the left-right direction of the tray 70, the projection 98 of the second mounting surface 98
a is in contact with the linear portion 84 d of the wall portion 84. In this state, the center P is located on the right side of the protrusion 82.

Subsequently, when the CD tray 95 rotates while being eccentric, the CD tray 95 is moved to the projection 9 of the second mounting surface 98.
28 comes into contact with the front surface of the curved surface portion 84h of the wall portion 84 as shown in FIG. In this state, the center P is located on the rear side of the projection 82. When the CD tray 95 moves from the state shown in FIG. 27 to the state shown in FIG. 28, the projection 98a of the second mounting surface 98 has a curved surface portion 84h of the wall portion 84.
And the protrusion 99a of the third mounting surface 99 is
4 is in contact with the vicinity of the center of the straight portion 84a.

Further, when the CD tray 95 rotates while being eccentric, the CD tray 95 is moved to the projection 9 of the first mounting surface 97.
FIG. 29 shows a state in which 7a comes into contact with the linear portion 84c of the wall portion 84. In this state, the center P is located on the left side of the projection 82. When the CD tray 95 moves from the state of FIG. 28 to the state of FIG. 29, the projection 97a of the first mounting surface 97 moves from the curved surface portion 84g of the wall portion 84 to the linear portion 84c. , And the projection 98 of the second mounting surface 98
a rotates in a state of contact with the linear portion 84e of the wall portion 84.

Subsequently, when the CD tray 95 rotates while being eccentric, the CD tray 95 is brought into contact with the projection 99a of the third mounting surface 99 against the front side of the linear portion 84b of the wall 84 as shown in FIG.
State. When the CD tray 95 moves from the state shown in FIG. 29 to the state shown in FIG. 30, the protrusion 99a of the third mounting surface 99 has a curved surface portion 84f of the wall portion 84.
It rotates in a state of contact with.

When the above-described selection operation is completed, the gear 24 shown in FIG. 2 rotates counterclockwise. The gear portion 28 of the gear 24 meshes with the gear portion 39 of the cam 35 so that the cam 35
Rotates clockwise. When the cam 35 rotates, the engagement piece 58 of the support 54 shown by a solid line in FIG. 31 moves along the cam surface 37 of the cam 35. That is, the support 5
4 tilts clockwise about the axis 55 from the position indicated by the solid line in FIG. 31 to the position indicated by the two-dot chain line. As a result, the disk support 56 rises and lifts the CD 9 on the first mounting surface 97 of the CD tray 95. Therefore, CD
9 is chucked and played back in cooperation with the chucking member 53 as shown by the two-dot chain line in FIG.

Note that a slight play is provided in the gear teeth between the time when the tray 70 is stored and the time when the cam 35 is started. This is to prevent the CD tray 95 from rotating when the cam 35 is started while the tray 70 is being stored, thereby causing the reproduction positions of the mounting surfaces 97 to 99 to shift.

When the rotation of the cam 35 is completed and when the tray 70
A slight play is provided in the gear teeth between the time when the gear is pulled out. This is because the tray 7 is rotating while the CD tray 95 is rotating.
This is to prevent 0 from being extracted.

When the open / close button 66 is pressed in the play state, the gear 24 rotates clockwise, contrary to the above. Accordingly, the support 54 tilts counterclockwise to release the chucking, and the CD 9 is returned to the original mounting surface 97.

Since the operating rods 38a and 38b of the cam 35 operate the operating element 47a of the position detecting body 47, the state of the support 54 is detected.

In the disk device of this embodiment, even if one CD is in a chucking state, the tray 70 can be pulled out so that another CD can be replaced. Hereinafter, the operation of the tray 70 in the chucking state will be described.

When the open / close button 67 is pressed, the motor 17 rotates to drive the gear 24 in the counterclockwise direction. At this time, the gear 24 is meshed with the gear 32,
The gear 31 and the gear portion 39 of the cam 35 are not meshed. Since the gear 33 meshing with the clockwise rotating gear 32 rotates counterclockwise, the tray 70 moves forward and is pulled out to the state shown in FIG.
At this time, the gear 31 rotates counterclockwise since it meshes with the gear 93 of the tray 70.
Does not mesh with the gear 24 rotating counterclockwise, so that there is no problem.

Since the gear 24 rotates in the counterclockwise direction, as shown by a two-dot chain line in FIG.
0 tilts the operator 46a of the position detecting body 46 in the clockwise direction. As a result, it is detected that the tray 70 has been pulled out in the play state, and the detection signal is supplied to the control system.

Even in the play state, the tray 70 is pulled out to the state shown in FIG. Therefore, in this example, the CD placed on the second or third placement surface 98, 99 can be replaced.

In this case, the tray 70 is pulled out of the cabinet 10 while the CD tray 95 does not rotate and the positions of the mounting surfaces 97 to 99 are maintained. That is, when the tray 70 is pulled out while the CD tray 95 rotates,
C is placed on the mounting surface 97-99 of the chucked CD9
D is to be mounted, and one mounting surface 97 to 99
This is because there is a disadvantage that two CDs are superimposed on each other. In this state, the gear 24 is not engaged with the gear portion 39 of the cam 35, so that the chucking state is maintained.

After the replacement of the CD, the open / close button 67 is pressed again. Thus, contrary to the above, the gear 24 rotates clockwise to move the tray 70 to the cabinet 10.
Housed inside. In this case, also in this case, the tray 70 is stored in the cabinet 10 while the CD tray 95 does not rotate and the position state of the mounting surfaces 97 to 99 is maintained.

Here, the operation when the open / close buttons 66 and 67 are pressed in the play state or the stop state and the subsequent operation procedure will be described with reference to FIGS. 32 and 33.

First, the case where the open / close button 66 is pressed in the play state will be described. The operation in this case and the subsequent operation procedure proceed as in the related art, as shown in FIG. That is, when the open / close button 66 is pressed (step 120), the rotation of the disk support 56 stops and the rotation of the CD 9 stops (step 121). Then, after the support member 54 for supporting the CD 9 is lowered to release the chucking (step 122), the tray 70 is pulled out of the cabinet 10. That is, C
The tray 70 is pulled out while the D tray 95 rotates 2/3 clockwise (step 123).

In the pulled-out state, the CD 9 can be mounted, that is, newly loaded, or a replacement operation can be performed (step 124). Next, with the player pulled out, the play button 69
a (step 125), the CD tray 9
The tray 70 is accommodated while the tray 5 rotates １ ／ clockwise (step 126). After the tray 70 is stored, the support 54 rises and the chucking state (step 12).
7) and play is started (step 128).

After the CD 9 is loaded, the change button 68
When the user presses a to 68e (step 12)
9), the CD tray 95 plays the selected CD at the playback position (mounting surface 9).
The tray 70 is accommodated while rotating the tray 70 up to the position corresponding to 7 to 99 (step 13).
0). Thereafter, as described above, the play is started after the support 54 is raised (step 127) (step 1).
28).

When the open / close button 66 is pressed after the CD 9 is loaded (step 131), the play button 6
Similarly to the case of pressing the 9a, after the tray 70 is stored (step 132), the support body 54 is raised to be in a chucking state (step 133). When the play button 69a is pressed in this state (step 134), play is started (step 128).

When the open / close button is pressed in the stop state, the same operation as described above is performed except for step 121. The reason why the CD tray 95 is rotated when the tray 70 is opened and closed is in consideration of convenience in reproduction.

Next, a case where the open / close button 67 is pressed as shown in FIG. 33 will be described. When the open / close button 67 is pressed (step 135), the microcomputer determines whether or not the player is in a play state (step 13).
6). If it is determined that the player is not in the play state, the operation instruction of the open / close button 67 is not accepted (step 13).
7), the tray 70 is not pulled out of the cabinet 10 (step 138). That is, even if the open / close button 67 is pressed in the stop state, the tray 70 is not pulled out. When the play state is determined, the operation instruction of the open / close button 67 is accepted (step 139), and the tray is held in a state where the CD tray 95 does not rotate, that is, in a state where the positions of the mounting surfaces 97 to 99 of the CD tray 95 are maintained. 70 is withdrawn (step 140). In this case, the mounting surfaces 97 to 99 are released from the cabinet 10 because two mounting surfaces 98 and 99 other than the mounting surface 97 corresponding to the disk support 56 as shown in FIG. It is. Therefore, in a state where the mounting surfaces 98 and 99 are opened, other CDs 9 can be mounted on the mounting surface 97 other than the mounting surface 97 corresponding to the CD 9 being reproduced (step 141).

When the open / close button 67 is pressed again after the mounting of another CD 9 (step 142), the tray 70 is stored (step 143).

When the open / close button 66 is pressed (step 144), the tray 70 is stored. That is, regardless of the stop state or the play state, if the tray 70 is pulled out, the open / close button 66
By pressing, the tray 70 can be stored. As a modification, the CD tray 95 is stored once by pressing the open / close button 66 (step 144), the play state is stopped, the chucking state is released, and then the CD tray 95 is pulled out again. May be.

Then, after the reproduction of the CD 9 being reproduced is completed, the player immediately enters the play state by selecting and operating another newly mounted CD 9. Therefore, another CD 9 can be reproduced quickly and smoothly. Even if the change buttons 68a to 68e are pressed after another CD 9 is mounted, the tray 70
Is not stored.

The positional relationship between the center P of the CD tray 95 and the projection 82 in the state shown in FIG. 30 is such that the center P is located on the front side of the projection 82 as in FIG. That is, CD tray 9
When 5 rotates 120 degrees, that is, 1/3 rotation, the support plate 81 makes one rotation. This relationship is the same for the CD tray 95 and the gear 79. Therefore, the CD tray 9
When 5 rotates once (360 degrees), the gear 79 and the support plate 81 rotate three times.

The state shown in FIG. 1 and FIGS. 27 to 30 shows a state in which the CD tray 95 is rotated by ３, and the rotation of the CD tray 95 thereafter is also eccentric as described above. It is done while.

FIG. 34 is a diagram intermittently depicting the trajectory of the detection piece 106 of the CD tray 95 that moves on the groove 85 of the tray 70. Although FIG. 34 illustrates only the trajectory of the detection piece 106, the other detection pieces 104 and 105 also draw the same trajectory.

As described above, since the CD tray 95 rotates while being eccentric, the trajectory of the detection pieces 104 to 106 does not form a perfect circle with respect to the center (projection 82) of the tray 70. That is, the trajectories of the detection pieces 104 to 106 are partially curved as shown in FIG. 34, and the width between the trajectories is expanded.

Therefore, in this example, a sensor (light emitting element, light receiving element) for detecting the rotational position of the CD tray 95, that is, the reproduction position of the mounting surfaces 97 to 99, is located at a portion corresponding to the intersection T where the width between the tracks is narrow. ) 88 and 89 are arranged. Detection piece 104
14 pass through four intersections T. In this example, sensors 88 and 89 are arranged at positions corresponding to the intersection T on the right side of the notch 87, as shown in FIG. These sensors 88, 8
Reference numeral 9 denotes an arrangement in which the light emitting element 88 and the light receiving element 89 face each other with the intersection T as a center, as shown in FIG.

FIG. 35 is a diagram showing the state of detection of the reproduction position of the CD tray 95. FIG. 35 is a diagram in which the mounting surface 99 is disposed at the reproduction position, that is, at a position facing the disk support 56. Then, the detection piece 106 with respect to the mounting surface 99
Passes through the light emitting element 88 and the light receiving element 89,
It is detected that the mounting surface 99 is located at the reproduction position. In addition, when the other detection pieces 104 and 105 pass through the light emitting element 88 and the light receiving element 89, it is also detected that the placement surfaces 97 and 98 are located at the reproduction position.

In the disk device of this embodiment, the tray 7
A mounting surface 9 that is rotatably arranged at 0 and on which the CD 9 is mounted.
Since the CD tray 95 in which 7 to 99 are formed in three places is arranged eccentrically with respect to the center (projection 82) of the tray 70, the CD tray 95 is rotated while being regulated along the wall portion 84 of the tray 70. Can be done. Therefore, in this example, the width of the tray 70 in the left-right direction can be reduced, and the size of the disk device can be reduced.

Further, in the disk device of this embodiment, the light emitting element 88 and the light receiving element 89 are arranged so as to oppose the portion corresponding to the intersection T having a narrow width between the trajectories. 3) Even if the light emitting element 88 is used, the rotational position of the CD tray 95 (the reproducing position of the mounting surfaces 97 to 99) can be reliably detected, and the manufacturing can be performed at low cost.

Further, in the disk device of this embodiment,
The notch 100 is placed on the CD tray 95 from the outer periphery thereof on the mounting surface 97.
To the center of the gear portion 102.
Is smaller than the diameter between the notches 100, the tray 70 can be pulled out even in the play state by disposing the chucking mechanism on the side opposite to the pulling-out direction of the tray 70.

In the disk device of this embodiment, the open / close button 6 for pulling out the tray 70 in the stop state is used.
6, since the open / close button 67 for pulling out the tray 70 in the play state is arranged on the front panel 65, the tray 70 can be pulled out in the play state by pressing the open / close button 67, and the reproduction of the CD 9 being reproduced ends. Thereafter, by selecting and operating another newly inserted CD, another C
D can be reproduced quickly and smoothly.

Further, in the disk device of this embodiment,
Since the gear 24 is configured to drive the gears 31 and 33 and the cam 35 to rotate, the single motor 17 can take the tray 70 in and out and tilt the support 54.
Therefore, in this example, the number of parts (motor) can be reduced, and the cost can be reduced.

Further, in the disk device of this embodiment, the rotation direction of the gear 24 when the tray 70 is pulled out is different between the stop state and the play state. Since the position detector 46 for detecting the rotation direction of the gear 24 is arranged in correspondence with the operating rod 30 of the gear 24, the tray 70 is pulled out by one position detector 46 in either the stop state or the play state. Can be detected with a simple configuration.

In the above-described embodiment, the CD tray 95 is driven by the gear 79.
The driving method of the tray 95 is not limited to this, and for example, the same can be applied by driving the support plate 81. In the above embodiment, the mounting surface 97 formed on the CD tray 95 is used.
Although the number of ~ 99 is three, the number of mounting surfaces is not limited to this.

In the above embodiment, the tray 70
Although two open / close buttons 66 and 67 are provided, one open / close button for the tray 70 may be provided. In this case, even if one open / close button is pressed, it is determined based on a signal indicating whether the CD 9 is in the play state or the stop state, and the tray 70 is pulled out in a corresponding state.

Further, the above embodiment is an example of a disk device for a compact disk, but the present invention can be applied to a disk device using other disks. Further, the present invention can be applied to a disk device of a type capable of recording in addition to reproduction.

[0109]

According to the present invention, the second tray, which is rotatably disposed on the first tray and has a plurality of mounting surfaces on which the disks are mounted, is moved with respect to the center of the first tray. Since the second tray is eccentrically arranged, the second tray can be rotated while being regulated along the wall of the first tray. Therefore, according to the present invention, the width of the disk device can be reduced,
The size can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a disk device according to an embodiment.

FIG. 2 is a plan view of a cabinet.

FIG. 3 is a diagram illustrating an appearance of a cabinet.

FIG. 4 is an enlarged sectional view taken along the line II of FIG. 3;

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

FIG. 6 is a bottom view of the gear.

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

8 is a sectional view taken along line IV-IV in FIG.

FIG. 9 is a diagram showing a meshing state of gears.

FIG. 10 is an exploded perspective view of the cabinet.

FIG. 11 is a plan view of a cam.

FIG. 12 is a sectional view taken along line VV in FIG. 11;

FIG. 13 is a development view of a cam surface.

FIG. 14 is a plan view of a tray.

FIG. 15 is a diagram illustrating an appearance of a tray.

FIG. 16 is an enlarged sectional view taken along line VI-VI of FIG.

FIG. 17 is an enlarged sectional view taken along line VII-VII of FIG.

FIG. 18 is a diagram showing a meshing state of gears.

FIG. 19 is a view showing a meshing state of gears.

FIG. 20 is an exploded perspective view of the tray.

FIG. 21 is an exploded perspective view of the tray.

FIG. 22 is a plan view of a CD tray.

FIG. 23 is an enlarged sectional view taken along line VIII-VIII of FIG. 22;

FIG. 24 is an enlarged sectional view taken along line IX-IX of FIG. 22;

FIG. 25 is a diagram for explaining the operation of the position detection body.

FIG. 26 is a diagram illustrating a meshing state of gears.

FIG. 27 is a diagram showing an eccentric state of a CD tray.

FIG. 28 is a diagram showing an eccentric state of a CD tray.

FIG. 29 is a diagram showing an eccentric state of a CD tray.

FIG. 30 is a diagram showing an eccentric state of a CD tray.

FIG. 31 is a view showing a tilted state of a support.

FIG. 32 is a flowchart illustrating an operation by an open / close button and the like.

FIG. 33 is a flowchart for explaining an operation by an open / close button and the like;

FIG. 34 is a diagram illustrating a locus of a detection piece on a CD tray.

FIG. 35 is a diagram for describing a detection state of a reproduction position of a CD tray.

FIG. 36 is a plan view of a conventional example.

[Explanation of symbols]

 9 CD 10 Cabinet 17, 71 Motor 19 Rotor 23, 24, 31-33, 79 Gear 30, 38a, 38b Operating rod 35 Cam 37 Cam surface 39, 74, 76, 93, 102 Gear portion 39a Gear teeth 46, 47 Position detectors 46a, 47a Operators 54 Supporter 56 Disc support 57 Optical pickup 58 Engagement piece 65 Front panel 66, 67 Open / close button 70 Tray 72 Worm shaft 75 Belt 81 Support plate 82 Projection 83 Support shaft 84 Wall portion 84a-84e Linear portion 84f-84i Curved surface portion 85 Groove 86 Lane surface 87 Notch 88 Light emitting element 89 Light receiving element 95 CD tray 97-99 Mounting surface 97a-99a Projection 104-106 Detection piece P CD tray center L tray Center distance from CD tray M, Q Moment T Intersection

Claims (1)

(57) [Claims] 1. A disc device for selectively reproducing an arbitrary disc from a plurality of discs, comprising: a first tray having a wall formed therein; and a first tray having a wall formed to be rotatable along the wall of the first tray. A second tray having a plurality of mounting surfaces on which the discs are mounted, wherein the second tray is disposed eccentrically with respect to the center of the first tray, and Wherein the tray moves along a wall of the first tray.