JPS6050743A - Reproducer of optical disk record - Google Patents

Abstract

PURPOSE:To load assuredly an optical disk with simple constitution even in case the disk is loaded erroneously by providig a guide sloping part and a position control part for the disk at a disk store part of a tray, and also a disk position control part at the tray inlet/outlet of a cabinet respectively. CONSTITUTION:An optical disk 25 is loaded to the disk store part 16 of a tray main body 13 with the disk stuch out toward the end of the part 16, and an ejection key 14 is operated. In such a case, the fringe part of the disk 25 touches the end of opening part 22 of a front panel 12, and a control part 21 and is therefore shifted toward an arrow C as the disk is loaded toward an arrow B. When the disk 25 is loaded more toward B, the fringe part of the disk is detached from the edge of the part 22 and abuts on a projection part 24 for control of disk position at the right side to receive the position control. Thus the disk 25 is shifted toward C when it is loaded further. When the disk is shifted toward C until its maximum diameter part abuts on the part 24, the disk is guided by a sloping part 20 of the part 16 to receive the position correction to the part 16. Thus the disk 25 is loaded correctly to the part 16.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement of an optical disc record playback device suitable for an optical DAD (digital audio disc) system.

[Technical background of the invention and its problems]

Recently, in the field of audio equipment, high-fidelity W t [Le fc Me PCM (]Fres Court Modulation)
Digital recording and reproducing methods using technology have emerged and are becoming popular. This is called digital audio, and the principle is to make the audio characteristics independent of the characteristics of the recording medium and far superior to the conventional analog system. This is because it has been established. In this case, a system that uses a disk as a recording medium is called a DAD system, and optical, electrostatic, and mechanical playback methods are known. Regardless of which of these playback methods is adopted, the playback device that embodies it must be able to satisfy various advanced functions and performances not found in conventional devices. required.

For example, in an optical disc record playback device using the CD (compact disc) method among optical playback methods, digital (PCM) is used as opposed to a transparent resin disk.
An optical disk with a diameter of 12I:1n and a thickness of 1.2mm, which is coated with a metal thin film that forms bits (irregularities with different reflectances) corresponding to the digital data, is produced using the CLV (constant linear velocity) method. It is driven at variable rotational speeds of about 200 to 500 r, p, m. In this case, the above-mentioned disk has a track pitch of 1.6 μm and contains a huge amount of information that can be played in stereo for about 1 hour, so it is equipped with various advanced functions and performances. This is easily understood.

The next requirement for the above-mentioned optical disc record playback device is to organically combine additional functions in accordance with various requirements with each mechanical part in a simple configuration in order to further improve functionality and performance. The objective is to ensure that the various requirements are satisfied.

By the way, specific additional functions may be used to improve the handling of the disc and to further promote protection measures such as damage prevention.

However, in such an optical disc record playback device, for example, if a disc is loaded by mistake and the disc is loaded, the disc may be damaged. In order to ensure reliable loading even under any miscontainment conditions, the structure is simple, and without increasing its size, it improves its handling and promotes protective measures. be.

[Purpose of the invention]

This invention was made in view of the above circumstances, and provides an extremely good optical disc record that has a simple structure, promotes protection measures for optical discs, and makes it possible to improve the handling properties. The purpose is to provide a playback device.

[Summary of the invention]

That is, the present invention provides an optical disc record playback device in which a tray containing optical discs in a substantially horizontal manner is loaded horizontally into and out of a cabinet, in which the tray corresponds to the disc accommodating portion of the tray. an inclined part for guiding the disc and a regulating part for regulating the disc position, and a regulating part for regulating the disc position is provided in the entrance/exit part of the cabinet in correspondence with the disc accommodating part of the tray, The present invention is characterized in that, when a disc is incorrectly accommodated, the position is corrected in conjunction with loading by cooperation of the inclined part and the regulating part of the tray and the regulating part of the cabinet.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

Figures 1 and 2 are CDs to which this invention is applied, respectively.
This figure shows the disc loading mechanism of a type of optical disc record playback device.

That is, in the disc loading mechanism section, a tray main body 13, which stores an optical disc (not shown in FIGS. 1 and 2) in a substantially horizontal manner, is mounted on the front surface of the cabinet 11, with respect to the 9-channel 12. It is disposed such that it can be freely moved in and out in the directions of arrows (A) and (B) via a loading mechanism (not shown). The tray body 13 is the eject key 1 provided on the front panel 12.
In conjunction with the operation 4, the loading mechanism is driven to a predetermined state, and the disc is loaded while being guided by a guide rail 15 (see FIG. 2) to the disc loading/unloading position and the drive position.

Here, a mechanism for preventing erroneous disk loading, which is constructed for the disk loading mechanism section, will be explained.

In this case, first, the disk is accommodated in a substantially horizontal manner, and the stone tray main body 13 has a generally concave disk accommodating portion 16 formed on its upper surface in a substantially circular shape corresponding to the disk. Four parts 17 and 18 for attaching and detaching a disc are formed near both ends of the disc accommodating part 16, corresponding to the maximum diameter part thereof. A through hole 19 for transmitting a laser beam is formed in the disk housing portion 16 in the depth direction from the substantially central portion of the bottom surface thereof, and a through hole 19 is formed in correspondence with a turntable and an optical pickup (not shown). A disc guiding inclined part 20 which is inclined inwardly along the inner periphery of the disc is formed so that its front side is eccentrically wide in the direction of both ends with respect to the recessed parts 17 and 1B. Further, the tray main body 13 has a regulating portion 21 for regulating the disk position that engages with the peripheral edge of the disk and the inclined portion 21 on the upper surface thereof.
It is provided protrudingly on the front side corresponding to 0.

On the other hand, the above front A? The channel 12 is formed with an opening 22 for inserting and removing the tray, and a pair of protrusions 23 and 24 for regulating the disk position are provided at the upper end of the opening 22 at a position recessed from the front surface of the opening 22. The maximum diameter portion of the disk accommodating portion 16 of the main body 13 is also formed at narrow intervals. In this case, these protrusions 23 and 24 have a distance (a) between their tips and the top surface of the tray body 13 (see Figure 2).
The thickness of the disk is 1.2 m), and the disks are formed so that the distance between the disks is even narrower.

That is, in the above configuration, as shown in FIG. 3, the optical disc 25 may be incorrectly accommodated in such a way that it protrudes toward one end (to the right in the figure) with respect to the disc accommodating portion 16 of the tray body 13. When the eject key 14 is operated, as the eject key 14 is loaded in the direction of arrow (B), its periphery comes into contact with one end of the opening 22 of the front/mother panel 12, as shown in FIG. 4, and its position is regulated. At the same time, the peripheral edge on the rear end side comes into contact with the regulating part 2, so the arrow mark (Q)
direction. As shown in FIG. 5, when the disk 25 is further loaded in the direction of arrow CB, its peripheral edge is separated from the end of the opening 22 and comes into contact with the protrusion 24 on the right side of the figure. Since the position is restricted by the loading process, it is further moved in the direction of arrow (C). At this time, as the disk 25 is loaded as shown in FIG. 6, when the disk 25 is moved in the direction of arrow (C) until its maximum diameter comes into contact with the protrusion 24, the disk accommodating portion 16 is tilted. 20, and is corrected and accommodated in the disk accommodating section 16-. As a result, the disk 25 is transferred to the tray main body 13.
When the loading in the direction of the arrow (B) is completed, the disk is flanged to the turntable in a playable state by a disk clamper mechanism (not shown), and the disk can be played in conjunction with a play key (not shown). It is something.

Furthermore, if the disk 25 is incorrectly accommodated in such a way that it protrudes toward the other end (left side in the figure) with respect to the disk accommodating portion 16,
The other end of the opening 22 of the operation panel 12 and the protrusion 23 on the right side in the figure, the regulating part 21 and the inclined part 2 of the tray body 13
In almost the same way as the correction operation described above, in cooperation with o,
It is corrected and accommodated in the disk accommodating portion 16, and its explanation will be omitted here.

In this manner, the four surface grooves for preventing disc loading are provided with an inclined part 20 for guiding the disc and a regulating part 21 for regulating the disc position in the disc accommodating part 16 of the tray body 13, and with respect to the front panel 12. A protrusion 23, 24 for disc position regulation corresponding to the disc accommodating part 16 is provided at a predetermined position of the opening 220, and the position of the misaccommodated disc 25 is corrected by cooperation with the disc accommodating part 16. Constructed to prevent incorrect installation. This makes it possible to reliably prevent the disc 25 from being erroneously mounted, and to improve the protection measures for the disc 25 and the ease of its handling.

Furthermore, the present invention is not limited to the above-mentioned embodiment, but as shown in FIG. It is equally effective even if it is formed at a constant rate without causing any damage.=10-.

In each of the above-mentioned embodiments, the opening 22 for tray entry and exit formed in the operation panel 12 of the cabinet 11 is also used for regulating the disk position. Against the tray body 13
It is equally effective to provide a dedicated disc position regulating part on the outside of the loading track so as to face the peripheral edge of the disc 25 and correspond to the disc accommodating part 16.

〔Effect of the invention〕

As detailed above, according to the present invention, with a simple configuration,
Furthermore, it is possible to provide an extremely good optical disc record playback device that promotes protection measures for the optical disc and improves its handling properties.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an optical disc record playback device showing an embodiment of the present invention, FIG. 2 is a sectional view of FIG. 1,
3 to 6 are plan views showing the operating state of FIG. 1, and FIG. 7 is a perspective view showing another embodiment of the present invention. 11... Cabinet, 12... Front panel, 13
...Tray body, 14...Eject key, 15.
...Guide rail, 16...Disk storage section, 17.
18... recessed part, 19... through hole, 20... inclined part,
21... Regulation part, 22... Opening part, 23.24...
-Protrusion, 25...disc.

Claims (1)

[Claims] In an optical disc record playback device in which a tray containing optical discs in a substantially horizontal manner is loaded horizontally into and out of a cabinet, a disc guiding portion is provided for the tray corresponding to the disc accommodating portion of the cabinet. A slope part and a regulating part for regulating the disc position are provided, and a regulating part for regulating the disc position is provided at the entrance/exit part of the cabinet in correspondence with the disc accommodating part of the tray, to prevent the optical disc from being erroneously accommodated. An optical disc record reproducing apparatus, characterized in that the position is corrected in conjunction with loading by cooperation between the inclined part and the regulating part of the tray and the regulating part of the cabinet.