JP2000149532A - Disc device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the thickness of a compact disc player. SOLUTION: An insulator 54 is composed of a member 94 which has a recessed part 94c recessed inward between swollen parts 94a and 94b. A turntable chassis 51 is supported by the recessed part 94c. A hollow part 94d is formed inside the member 94 and the pin 91 of a main chassis 31 is inserted into the hollow part 94d. With this constitution, the turntable chassis 51 can be turned freely with the insulator 54 as the center of rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device suitable for use in, for example, a compact disk player.

[0002]

2. Description of the Related Art FIGS. 13 and 14 show an example of a configuration of a loading device in a conventional compact disc player. FIG. 13 is a plan view, and FIG. 14 is a side view. As shown in these figures, a sub-chassis 2 is supported by a main chassis 1 so as to be rotatable about a pin 2a. A turntable chassis 4 is supported on the sub-chassis 2 via an insulator 3. The turntable chassis 4 supports a turntable 5,
The pickup 6 is supported movably in the left-right direction in the figure.

[0003] When the drive gear 7 rotates, the cam barrel 8 having the cam 9 rotates. A pin 10 provided on the sub-chassis 2 is fitted to the cam 9.

Accordingly, when the drive gear 7 is rotated to drive a tray (not shown) into the apparatus main body, the cam cylinder 8 rotates in conjunction with the drive. At a predetermined timing, the pin 10 is guided by the cam 9 and moves downward in FIG. Accordingly, the sub-chassis 2 rotates counterclockwise in FIG. 14 around the pin 2a, and the turntable 5 sinks downward. This allows
14 without the tray hitting the turntable 5.
, The disk placed on the tray can be transferred to a predetermined loading position.

When the tray is placed at a predetermined position, the pin 10 is guided by the cam 9 to move the pin 10 upward in FIG. Thus, the sub-chassis 2 rotates clockwise in FIG. 14 around the pin 2a, and the turntable 5 fits into the center hole of the disk. Thus, the disk is placed on the turntable 5.

[0006]

In the conventional apparatus, the sub-chassis 2 is rotatably supported with respect to the main chassis 1, and the turntable chassis 4 is supported on the sub-chassis 2 via the insulator 3. Therefore, there has been a problem that the overall height of the device is increased and miniaturization is difficult. In addition, there is a problem that the number of parts increases and the cost increases.

The present invention has been made in view of such a situation, and aims at simplifying the configuration, enabling a reduction in the thickness, reducing the number of parts, and reducing the cost.

[0008]

According to a first aspect of the present invention, there is provided a disk drive comprising: a turntable for rotating a mounted disk; a turntable chassis for supporting the turntable; and a main chassis for supporting the turntable chassis. An insulator interposed between the turntable chassis and the main chassis table, wherein the insulator comprises a hollow elastic member having a concave portion and a pair of inflatable portions sandwiching the concave portion. The turntable chassis is supported and supported by being sandwiched and held in the recess by the inflatable portion.

In the disk device according to the first aspect, the insulator interposed between the turntable chassis and the main chassis table has a hollow elasticity having a concave portion and a pair of expansion portions sandwiching the concave portion. The turntable chassis is supported by the main chassis and is held by the inflatable portion in the concave portion.

[0010]

1 to 5 show the configuration of an embodiment of a disk drive according to the present invention. FIG. 1 is a perspective view showing a state where the tray 32 is accommodated in the main chassis 31, and FIG. 2 is an exploded perspective view in the embodiment of FIG. FIG. 3 shows FIGS. 1 and 2
FIG. 4 is a plan view showing a configuration in which a drive mechanism and a turntable chassis 51 are mainly attached to the embodiment shown in FIG.
Is a front view thereof. FIG. 5 is a plan view showing a state where the tray 32 has advanced and retracted.

As shown in these figures, a guide 31a is provided on the side of the main chassis 31, and a rail (projection) 32a of the tray 32 is engaged with the guide 31a. Thereby, the tray 32 is moved to the position shown in FIGS.
Is movable in the direction indicated by the arrow.

A projection 35 is provided on the main chassis 31, and the chucking chassis 33 is fixed to the projection 35 by screws. This chucking chassis 33
Is formed with a small-diameter chucking pulley 34a and a large-diameter chucking pulley 3a.
The chucking pulley 34 made of 4b is rotatably held. The chucking pulley 34b chucks the disk 92 (FIG. 12) mounted on the turntable 53 (FIG. 5).

A recess 38 for mounting a disk 92 is formed in the tray 32, and a hole 3 for disposing a turntable 53 and a pickup 52 is further provided inside the recess 38.
7 are formed. At the rear of the tray 32, locking portions 36 are formed on the left and right sides. When the tray 32 is retracted farthest from the main chassis 31 (to the far right in FIGS. 3 and 5), the protrusion 33 b of the chucking chassis 33 is positioned near the locking portion 36. Has been made. A rack 68 is formed on one side (upper side in FIG. 5) of the tray 32, and a pin 40 is planted behind the opposite side. When the tray 32 advances to a predetermined position (the leftmost position in FIG. 5) (the main body 91 (FIG. 1)
2) when it has advanced the most, and the main chassis 3
The projection 41 is formed so as to be engaged with the projection 41.

As shown in FIGS. 3 and 5, an oval loading motor 61 is mounted on the main chassis 31 so that the rotation axis thereof is parallel to the direction of movement of the tray 32 (parallel to the paper). . A motor pulley 62 made of a synthetic resin is connected to a tip of the rotating shaft. The motor pulley 62 has a tapered surface 62a. The loading pulley 63 made of, for example, silicon rubber is rotatably supported by the main chassis 31 so as to have a rotation axis perpendicular to the rotation axis of the loading motor 61. The loading pulley 63 also has a tapered surface 63a, and the tapered surface 63a comes into contact with the tapered surface 62a of the motor pulley 62 so that its rotation is transmitted.

As shown in a partially enlarged view in FIG. 6, the loading pulley 63 has a rotation shaft 80 at the center thereof, and a cavity 80a is formed therein. A pin 83 formed on the main chassis 31 is fitted into the cavity 80a. A cavity 83a is formed in the pin 83, into which a spring 81 and a pin 82 are inserted. The spring 81 presses the pin 82 upward in the drawing, and the upper end of the pin 82 presses the inner wall of the rotating shaft 80 upward. As a result, the tapered surface 63a of the loading pulley 63 becomes the tapered surface of the motor pulley 62. 62a. Thus, the rotation of the motor pulley 62 is reliably transmitted to the loading pulley 63.

A gear 64 is formed coaxially below the loading pulley 63. And this gear 64
Are engaged with a gear 65, and a small-diameter gear 66 is coaxially coupled to the gear 65. The gear 66 meshes with a drive gear 67. And, this drive gear 67
Are engaged with the rack 68 of the tray 32 (FIG. 5).

As shown in FIG. 7, the driving gear 67 includes an upper gear 67a and a lower gear 67b, and a cam 67c is formed therebetween. This cam 6
A pin 71b of the rotating plate 71 (FIG. 3) is fitted into 7c. Then, with the rotation of the drive gear 67, the pin 71b is guided by the cam 67c, and the rotating plate 71 is perpendicular to the plane of FIG. 3 around the projection 71a rotatably supported by the main chassis 31. It is adapted to be pivoted in the direction.

The hole 37 shown in FIG.
The turntable chassis 51 is arranged as shown in FIG. The turntable chassis 51 is supported by the main chassis 31 via an insulator 54. The turntable chassis 51 is provided with a turntable 53 and a pickup 52.
The turntable 53 is adapted to rotate the disk when the disk is placed thereon. When the disc is placed on the turntable 53, the chucking pulley 34b shown in FIG. 2 presses the disc onto the turntable 53. The pickup 52 is located on the turntable chassis 51,
It is movable in the left-right direction of FIG.

FIG. 8 shows an enlarged cross-sectional configuration of the insulator 54. As shown in the figure, the insulator 54 is composed of a member 94 made of rubber.
4b, there is a recess 94c that is recessed inward, and the turntable chassis 51 is supported in the recess 94c. A hollow portion 94d is formed inside the member 94, and a pin 91 of the main chassis 31 (or the rotating plate 71) is inserted therein. A screw 93 is screwed to the pin 91 via a washer 92.
The washer 92 prevents the member 94 from falling off the pin 91.

As a result, even if the main chassis 31 vibrates due to external vibration or the like, the vibration is attenuated by the member 94, and the vibration is reduced by the turntable chassis 51.
It is made difficult to be transmitted to. Also, the recess 94
The distance between the pin c and the pin 91 is set relatively large, so that the turntable chassis 51 is not only slightly movable up and down in FIG.
The turntable chassis 51 can be inclined within a range of a predetermined angle with respect to 1.

FIGS. 9 and 10 show a state in which the rotating plate 71 and the turntable chassis 51 are rotated about the insulator 54 as a fulcrum. FIG.
Indicates a state in which the tray 32 has advanced from the main chassis 31. At this time, as shown in FIG.
1 rotates clockwise in the figure with the projection 71a as a fulcrum. The turntable chassis 51 rotates counterclockwise around an insulator 54 shown on the right side in the figure as a fulcrum. The turntable chassis 51 and the rotating plate 71 are connected via an insulator 54 shown on the left side in the figure. However, as described above, since the insulator 54 holds the turntable chassis 51 rotatably, Such rotation of the turntable chassis 51 is allowed.

As shown in FIG. 9, the turntable 53
Is moved to the lower side in the figure, even if the tray 32 moves to the right side in the figure, the turntable 53 does not become an obstacle.

On the other hand, when the tray 32 is retracted to a predetermined position, as shown in FIG. 10, the turntable chassis 51 and the rotating plate 71 are returned to a horizontal state.
As a result, the turntable 53 protrudes upward and is inserted into the center hole of the disc carried by the tray 32. As a result, the disc is chucked between the chucking pulley 34 and the turntable 53.

Next, the operation will be described. Now, as shown in FIG. 3, when the tray 32 is stored in the rightmost position with respect to the main chassis 31,
When the advance of the tray 32 is commanded, the loading motor 6
1 is energized and it is rotated. This rotation is performed after the direction of the rotation axis is rotated by 90 degrees by the motor pulley 62 and the loading pulley 63, and then the gear 64 and the gear 6 are rotated.
5, transmitted to the drive gear 67 via the gear 66. Thereby, the drive gear 67 is rotated counterclockwise in FIG. The drive gear 67 is engaged with the rack 68 of the tray 32 as shown in FIG. 5, so that the rack 68 is moved to the left in FIG. 3, and is advanced from the main chassis 31 as shown in FIG. .

The state where the tray 32 is shown in FIG. 3 (accommodation position).
7, the pin 71b of the rotating plate 71 is fitted to the upper stage of the cam 67c shown in FIG. When the drive gear 67 rotates, the pin 71b is moved downward in FIG. 7 according to the inclined surface 67d of the cam 67c with the rotation. As a result, the rotating plate 71 is turned around the projection 71a.
It rotates clockwise as shown in FIG. Since the turntable chassis 51 is coupled to the turning plate 71 via the insulator 54, the turntable chassis 51 also turns counterclockwise in FIG. 9 at the same time. Since the turntable chassis 51 sinks downward as described above, the operation of moving the tray 32 to the unloading position is performed without any trouble.

When the tray 32 has advanced to a predetermined position, as shown in FIG.
Abuts on the protrusion 41 of the main chassis 31. As a result, the right side portion of the tray 32 in the figure is further
You will not be able to enter from.

On the other hand, the drive gear 67 is further driven so that the tray 32 is advanced from the main body 98. As a result, as shown in FIG. 11, only the left portion of the tray 32 in the figure advances forward (upward in the figure) from the main body 98.
Finally, the pin 40 on the left side in the drawing (disposed behind the pin 40 on the right by the distance d) comes into contact with the projection 41. As a result, the tray 32 can no longer advance. At this time, the rotation of the drive gear 67 is stopped. As a result, as shown in FIG. 11, the tray 32 stops at a position slightly rotated to the side on which the rack 68 is formed (the right side in FIG. 11).
FIG. 11 illustrates the inclination with a large inclination for convenience of explanation. However, in actuality, the inclination is relatively small, and the user recognizes that the tray 32 and the main body 98 are substantially parallel.

In such a position, when a disc is placed on the concave portion 38 of the tray 32 and loading is commanded, the loading motor 61 is rotated in a direction opposite to the above-described case. Thus, the driving gear 67 is rotated clockwise in FIG. At this time, as described above, since the tray 68 is provided with the rack 68 only on one side thereof, a force acts on only the rack 68 side, and a moment that rotates clockwise in FIG. Will do. However, as mentioned above,
The tray 32 is already stopped in a state where it is slightly rotated clockwise. As a result, it can no longer rotate clockwise. Therefore, the tray 32 is smoothly retracted toward the main body 98 without rattling.

In FIG. 11, the pins 40 and the projections 41 are also formed on the right side of the tray 32 and the main chassis 31 for convenience of explanation. However, in the embodiments of FIGS. The stopper by the right pin 40 and the projection 41 is not actually formed. Instead, at the time of unloading, as shown in FIG. 7, the engagement between the pin 71 b of the rotating plate 71 and the end 67 e of the cam 67 c is
It occurs at a timing slightly earlier than the engagement of the projection 41 with the zero. That is, during unloading, the pin 7
After the rotation of the drive gear 67 is stopped by the engagement between the end 1e and the end 67e, the tray 32 attempts to further advance due to inertia. As a result, the right side of the tray 32 stops at the engagement position between the pin 71b and the end 67e, but the left side further advances and stops at the position where the pin 40 and the projection 41 are engaged.

When the drive gear 67 rotates clockwise to retract the tray 32 toward the main body 98, when the tray 32 moves to a predetermined position, as shown in FIG.
Is lifted by the inclined surface 67d of the cam 67c. As a result, the rotating plate 71 rotates counterclockwise in FIG. 9 around the projection 71a. Thereby, the turntable chassis 51 is also lifted upward in FIG. When the pin 71b reaches the upper groove (FIG. 7) of the cam 67c, the rotating plate 71 and the turntable chassis 51 are held in a horizontal state (FIG. 10). At this time, the turntable 53 is fitted into the center hole of the disk. Then, the chucking pulley 34b presses the disc onto the turntable 53. Therefore, it is possible to rotate the turntable 53 to reproduce information from the disk.

On the other hand, this disc player is normally used horizontally mounted, but there is a case in which unloading is commanded when the disc player is erroneously mounted vertically. In other words, the unloading command is issued in a state in which the body is rotated clockwise by 90 degrees from the state shown in FIG. In this case, as described above, the turntable chassis 51 and the rotating plate 71 sink, so that the disc placed on the turntable 53 falls downward (to the right in FIG. 10). However, in the present embodiment, since the locking portion 36 is formed on the tray 32, the disk is locked by the locking portion 36,
It is prevented that it falls further into the body 98 further. Further, in order to ensure the locking by the locking portion 36, a projection 33 b is provided on the chucking plate 34, and the projection 33 b extends to the vicinity of the locking portion 36. As a result, when the disc falls, the locking portion 36
Is suppressed as it jumps. As a result, the disk 99 is securely locked by the locking portion 36.

Thereafter, when the tray 32 is advanced from the main body 98 to a predetermined position, the position of the locking portion 36 is adjusted so that the disk 99 locked by the locking portion 36 is sufficiently exposed from the main body 98. Is set (FIG. 12). Therefore, the user can use the disk 9 locked on the locking portion 36.
9 can be taken out without fail. When the disc 99 is at the original position, place the disc 99 in the tray 3
Needless to say, it can be easily detached from 2.

[0033]

As described above, according to the disk device of the first aspect, the insulator interposed between the turntable chassis and the main chassis table is provided with a concave portion and a pair of expansions sandwiching the concave portion. The main chassis is supported by a hollow elastic member and the turntable chassis is sandwiched and held in the concave portion by the expansion portion. This eliminates the need for a mechanism for rotatably supporting the device, and makes it possible to reduce the thickness and cost of the device.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of an embodiment of a disk drive according to the present invention.

FIG. 2 is an exploded perspective view of the embodiment shown in FIG.

FIG. 3 is a plan view showing the configuration of an embodiment of the disk drive of the present invention.

FIG. 4 is a front view of the embodiment shown in FIG.

FIG. 5 is a plan view showing a state where the tray 32 of the embodiment shown in FIG. 3 has advanced and retracted.

FIG. 6 is an enlarged sectional view showing a more detailed configuration of a motor pulley 62 and a loading pulley 63 in the embodiment shown in FIGS. 3 and 5;

FIG. 7 is a diagram illustrating a cam formed on a side surface of the drive gear 67 in the embodiment shown in FIGS. 3 and 5;

8 is an insulator 54 in the embodiment of FIG.
FIG. 3 is a cross-sectional view illustrating a detailed configuration example of FIG.

FIG. 9 shows a tray 3 according to the embodiment shown in FIGS. 3 and 5;
It is a sectional side view which shows the state which pulled out.

FIG. 10 is a side sectional view showing a state in which the tray 32 of the embodiment shown in FIGS. 3 and 5 is accommodated.

11 is a diagram illustrating a state in which the tray 32 of the embodiment shown in FIGS. 3 and 5 is advanced most from the main body 91. FIG.

FIG. 12 is a diagram illustrating a state in which the tray 32 has advanced while the disc 92 of the embodiment shown in FIGS. 3 and 5 is locked by the locking portion 36.

FIG. 13 is a plan view showing a configuration of an example of a conventional disk device.

FIG. 14 is a side view of the example of FIG.

[Explanation of symbols]

31 main chassis, 32 trays, 33 chucking chassis, 34 chucking pulley, 36
Locking portion, 40 pins, 41 protrusion, 51 turntable chassis, 52 pickup, 53 turntable, 54 insulator, 61 loading motor, 62 motor pulley, 63 loading pulley, 67 drive gear, 68 rack,
71 rotating plate, 80 rotating shaft, 81 spring

Claims (1)

[Claims] A turntable for rotating a loaded disk; a turntable chassis for supporting the turntable; a main chassis for supporting the turntable chassis; and a turntable chassis and the main chassis table. An insulator interposed therebetween, wherein the insulator is formed of a hollow elastic member having a concave portion and a pair of inflatable portions sandwiching the concave portion, and is axially supported by the main chassis and includes the inflatable portion. Wherein the turntable chassis is sandwiched and held in the recess.