JPH04258846A - Disk reproducing device - Google Patents

Abstract

PURPOSE:To prevent the reproducing device and a disk from being damaged by preventing a new disk from mounting, onto a disk holding part in a disk reproducing position on a tray in the disk reproducing device of a changer system capable of changing disks by ejecting the tray under reproducing. CONSTITUTION:A shutter support 50 is fixedly disposed on a mechanical chassis 40 in the reproducing device main body 28, and is fitted with a shutter 52 freely slidably in the direction of arrows E and E'. When the tray (disk transfer body) 26 is ejected from the reproducing device main body 28, bosses 78 and 80 on the tray 26 are brought into contact with shutter protrusion parts 64 and 66 so that the shutter 52 is drawn out of the reproducing device main body 28 to cover the disk holding part 34A in the disk reproducing position, where any new disk is prevented from mounting. When the tray 26 is housed in the reproducing device main body 28, a tip part 62 of the shutter is pressed by a lid 82 to be pushed into the reproducing device main body 28.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a changer-type disc playback device in which a plurality of discs can be set on a rotating table. This prevents a new disc from being erroneously mounted in the position where the disc currently being played should be mounted.

0002

2. Description of the Related Art Conventionally, a disc playback apparatus is known in which a rotary table is placed on a tray so that a plurality of discs can be set at the same time and played back continuously. In conventional disc playback devices of this type, playback must be stopped when replacing a disc, and it is not possible to eject the tray 12 and replace the disc while the disc is being played.

[0003] Therefore, in order to solve the drawbacks of such conventional devices, Japanese Patent Application No. Hei 1-12 filed by the present applicant has been proposed.
A disc reproducing device described in the specification and drawings of No. 4681 has been proposed. FIG. 2 is described therein as an example. The tray 26 is moved in the direction of arrow A relative to the main body 28 of the playback device to be stored and ejected. Tray 2
A rotary table 30 is mounted on 6 so as to be rotatable in the direction of arrow B. A rotation center 3 is located on the rotary table 30.
Multiple (here, 5) holding disk 1 around 2
A disk holding portion 34 is formed. The disc holding part 34 has a groove 34a for a 12cm CD and a groove 34a for an 8cm CD.
A groove 34b for D is provided. A notch 36 for inserting a playback unit is formed in the disc holding portion 34 toward the outer circumference of the rotary table 30. An opening 38 is formed in the center of the rear end of the disc tray 26, and communicates with the notch 36 of the disc holder 34 at that position, so that the playback unit 29 can be pulled out from there in the playback state and removed from the tray 26.
allows for the discharge of

At the center of the rear end of the mechanical chassis 40 in the main body 28 of the playback device, a holder 42 equipped with a turntable and a playback head as a playback unit 29 is located below the tray 26 and mounted on a rotating shaft 44 as shown by arrow C. It is rotatably supported around the center. In addition, the mechanical chassis 40 includes a tray 2.
A disk clamper 46 is fixedly installed above the turntable 6 and facing the turntable. The holder 42 and the disc clamper 46 constitute a disc mounting mechanism 45.

When the holder 42 is rotated upward with the tray 26 housed in the playback device main body 28, the turntable and playback head rise and are inserted into the notch 36 of the disc holder 34A at the playback position. As a result, the disc 1 is placed on the turntable and the disc holder 3 is placed on the turntable.
4A and is clamped by a disk clamper 46. In this state, the playback head can perform playback. If you try to eject the disc during playback,
Since the regeneration unit 29 is pulled out horizontally from the notch 36 and the opening 38, the regeneration unit 29 is removed from the tray 26 while continuing regeneration.
can be pulled out from the playback device main body 28 to replace the disc.

[0006]

[Problem to be solved by the invention] Said patent application No. 1-124
In the case where the tray 26 is ejected during playback to enable disk exchange as in the disk playback device described in the specification and drawings of No. 681, in order to enable disk exchange for many disk holders 34, The tray 26 is ejected from the playback device main body 28 as far as possible. However, in this case, the disc holding portion 34A at the disc playback position also comes out of the playback device main body 28 by half (
(See Figure 2), if a new disc is inserted here by mistake, when the tray 26 is pushed in, this new disc will collide with the playback unit 29 that is in the playback state, causing the playback unit 29 and the playback There was a risk of damaging the old disk or the new disk.

[0007] The present invention has been made in view of the above-mentioned points, and aims to provide a disc playback device that prevents a new disc from being erroneously inserted into the mounting position of the disc being played. .

[0008]

[Means for Solving the Problems] In a disc playback device that enables disc conversion by ejecting a disc transporting body during playback, the present invention prevents a disc from being attached to the disc holder at a disc playback position. When the disc mounting prevention means and the disk transporting body are ejected, the disc mounting prevention means is shifted to a state where it prevents the mounting of a disc, and when the disc transporting body is stored, the disc mounting prevention means is moved to a state where it prevents the disc from being mounted. and a driving means for changing the state to a state that allows the mounting of a disc.

[0009]

[Operation] According to the present invention, a movable disc mounting prevention means and its driving means are disposed, and when the disc transport body is ejected, the disc mounting prevention means is moved to a state where it prevents the disc from being mounted. When the transport body is stored, the disc mounting prevention means is configured to shift to a state that allows the disc to be mounted, so that when the disc transport body is ejected during disc playback, there is no possibility that the disc being played will be placed in the wrong position. This prevents the player from loading a new disc, thereby preventing damage to the playback unit and the disc.

0010

[Embodiment] An embodiment of the present invention will be described below. FIG. 1 is a plan view showing the internal structure of a disc playback device to which the present invention is applied, in a tray ejected state. Figure 2 above
The same reference numerals are used for parts common to . The tray 26 is moved in the direction of arrow A relative to the main body 28 of the playback device to be stored and ejected. A rotary table 30 is placed on the tray 26 in the direction of arrow B.
It is mounted so that it can rotate in any direction. rotary table 3
A plurality of (five in this case) disk holding portions 34 for holding the disk 1 around the rotation center 32 are formed on the disk 0 . The disc holding portion 34 here includes a groove 34a for a 12 cm CD and a groove 34b for an 8 cm CD. A notch 36 for inserting a playback unit is formed in the disc holding portion 34 toward the outer circumference of the rotary table 30. An opening 38 is formed in the center of the rear end of the disc tray 26, and communicates with the notch 36 of the disc holder 34A at the disc playback position, so that the playback unit 29 can be pulled out from there and placed in the tray 26 while still in the playback state. Allow for evacuation. Note that the tray 26 and the rotary table 30 constitute a disk transport body.

At the center of the rear end of the mechanical chassis 40 in the playback device main body 28, there is a section shown in FIG.
As shown in FIG. 2, a holder 42 holding a turntable 31 and a reproducing head 33 is rotatably supported around a rotating shaft 44 as shown by an arrow C. As shown in FIG. In addition, mechanical chassis 4
A disk clamper 46 is fixedly installed at the turntable 31 facing the turntable 31. The holder 42 and the disc clamper 46 constitute a disc mounting mechanism 45.

When the holder 42 is rotated upward by the driving force of a motor or the like while the tray 26 is housed in the playback device main body 28, the turntable 31 and the playback head 33 rise to the position of the disc holding section 34A at the playback position. It is inserted into the notch 36. As a result, the disc 1 mounted on the disc holder 34A is placed on the turntable, pulled up from the disc holder 34A, and clamped by the disc clamper 46. In this state, playback head 3
3 can be reproduced. When the disc is ejected in the playback state, the playback unit 29 is pulled out horizontally from the notch 36 and the opening 38, so the tray 26 can be pulled out from the playback main body 28 and the disc can be replaced while continuing playback. .

A tray 26 is provided in the center of the mechanical chassis 40.
A shutter support 50 is fixedly disposed along the moving direction. A shutter 52 (disc loading prevention means) is disposed on the lower surface of the shutter support 50 so as to be movable along the moving direction of the tray 26. The detailed configuration of the shutter support 50 and shutter 52 is shown in FIG. The shutter support 52 is made of a metal plate or the like, and is fixed to the mechanical chassis 40 by passing screws through holes 54. An opening 56 is formed at the rear of the shutter support 50 to allow the disk clamper 46 to pass therethrough. Furthermore, slits 58 to 61 are formed in the front portion of the shutter support 50 to support the shutter 52 in a horizontal manner so as to be movable in the directions of arrows E and E'.

The shutter 52 is made of a plastic plate, a metal plate, or the like. In this embodiment, the width of the shutter 52 is formed to be larger than the diameter of the 8 cm CD, but if it is made of a transparent plate such as a smoked plate, it can be confirmed whether or not the 8 cm CD is inserted. Even if it is not transparent, it can be confirmed whether the 8cm CD is inserted by making the shape so that the entire 8cm CD is not hidden, or by making a hole or slit. Also, 12cmC
It can also be formed to be larger than the diameter of D.

The shutter 52 includes a tip portion 62 for covering the disk holding portion 34A at the disk playback position to prevent mounting of a new disk, and a drive portion for sliding the shutter 52 in the direction of arrow E (ejecting direction). It has protrusions 64, 66 to which force is applied. The tip portion 62 is formed in an arc shape. Further, on the upper surface of the shutter 52, arrows E,
Guide boss 71~ for slidably supporting E'
74 is attached. The guide boss 71 is inserted from the rear end of the slit 59, and its tip 71a passes over the portion 76 between the slits 59 and 58 and passes through the slit 58.
is inserted into the shutter 52 to support the rear part of the shutter 52 so that it does not move in the vertical and horizontal directions. Further, the guide bosses 72, 73, and 74 support the front portion of the shutter 52 so that it does not move in the vertical and horizontal directions. With this configuration, the shutter 52 can slide in the directions of arrows E and E' with respect to the shutter support 50.

In FIG. 1, bosses 78 and 80 (protrusions) are formed on both sides of the opening 38 of the tray 26. As shown in FIG. These bosses 78 and 80 are connected to the shutter 52 when the tray is ejected.
The shutter 5 is used as a driving means when the tray 26 is ejected.
Rear ends 64a, 66a of the protrusions 64, 66 of No. 2 (Fig. 4)
The shutter 52 comes into contact with the shutter 52 and acts to pull out the shutter 52. Further, a lid 82 (protrusion) is formed at the front center of the tray 26 so as to face the tip 62 of the shutter 52 . This lid 82 is the shutter 52 when storing the tray.
As a driving means, when the tray 26 is stored, it comes into contact with and presses the shutter tip 62 to push the shutter 52 into the playback device main body 28.

The operation of the shutter 52 when discharging and storing the tray with the above configuration will be explained. When the tray is ejected, as shown in FIG. 1, the tray 26 is ejected and the bosses 78 and 80 on the tray 26 come into contact with the protrusions 64 and 66 of the shutter 52 to pull out the shutter 52. The state of engagement between the boss 78 and the shutter protrusion 64 at the time of tray ejection is shown in FIG. 5 as a sectional view taken along the line FF in FIG. 1. When the shutter 52 is pulled out, it covers the disc holding portion 34A at the disc playback position and prevents the mounting of a new disc. As for the other disk holders 34, the disks can be replaced and new disks can be installed. Furthermore, if the tray is ejected during disc playback,
The rotary table 30 is not rotatable. Further, when tray ejection is performed during non-playback (at this time, all discs are removed from the turntable and placed on the tray 26), the rotary table 30 is made rotatable and all discs held are The disk in the section 34 can be replaced. Rotation of the rotary table 30 can be prevented by using, for example, an electrically driven locking mechanism.

When storing the tray, the lid 82 of the tray 26 presses the shutter tip 62, pushing the shutter 52 into the playback device main body 28 as shown in FIG. In this state, the shutter 52 is removed from the disc holder 34A at the disc playback position, so it does not interfere with the disc playback by the playback unit 29, and the disc being played back can be returned to the disc holder 34A.

[0019]

[Modification] The present invention can also be applied to a magazine rack in which the disk transport body is used and a suction type in which the disk mounting mechanism is used. Further, in the above embodiment, the present invention is applied to a CD player, but it can also be applied to other disc playback devices.

[0020]

As explained above, according to the present invention, the movable disk mounting means and its driving means are arranged, and the disk mounting prevention means prevents the mounting of the disk when the disk transport body is ejected. When the disc transport body is stored, the disc mounting prevention means is set to a state where disc mounting is permitted, so that a new disc may be accidentally inserted into the position where the disc being played back should be mounted. This prevents the playback unit and disc from being damaged.

[Brief explanation of the drawing]

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

FIG. 2 is a perspective view showing a conventional disc playback device.

FIG. 3 is a sectional view taken along the line DD in FIG. 1.

4 is a detailed view of the shutter support 50 and shutter 52 of FIG. 1. FIG.

FIG. 5 is a sectional view taken along the line FF in FIG. 1.

6 is a plan view showing the tray storage state of the disc playback device of FIG. 1. FIG.

[Explanation of symbols]

1 Disk 26 Tray (disc transport body) 30 Rotary table (disc transport body) 31 Turntable 33 Playback head 34 Disc holding section 34A Disc holding section 36 at the disk playback position
Notch 38 Opening 45 Disk mounting mechanism 46 Disc clamper 52 Shutter (disc mounting prevention means) 78, 8
0 Boss (driving means) 82 Lid (driving means)

Claims (1)

[Claims] 1. A disc transporting body that moves relative to an apparatus main body to be stored and ejected and has a plurality of disc holding parts, and a turntable and a playback head that are provided within the apparatus main body separately from the disc transporting body. and a disc mounting mechanism for selectively mounting a disc held in one of the disc holding parts on the turntable with the disc transport body housed in the apparatus main body, In the disc playback device, the disc transporting body can be independently ejected while the disc is being played, and the disc is not mounted on the disc holding part by blocking part or all of the disc holding part at the disc playback position. a movable disk mounting prevention means for blocking the mounting; when the disk transport body is ejected, the disc mounting prevention means is moved to a state of inhibiting the mounting of the disc; and when the disc transport body is stored, the disc mounting prevention means is moved to a state where the disc mounting is inhibited; A disc playback device comprising driving means for shifting a disc mounting prevention means to a state that allows disc mounting.