JPH1186399A - Optical disk reproducer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the erroneous insertion of a disk without making the height of a door closing an optical disk inserting port higher by providing a protrusion preventing the optical disk from being inserted from the gap between the door and the optical disk inserting port when the door opening and closing the optical disk inserting port is closed. SOLUTION: When a disk 8 is to be inserted in the optical disk inserting port, a rubber roller arm 4 is rotated in a clockwise direction around an axis 7 and the disk 8 is held in between a rubber roller 5 and a disk guide 6 to be fed on a turntable 1a. When a clamp holder 2 is lowered and the disk 8 is clamped in between a clamper 3 and the turntable 1a, the rubber roller arm 4 is rotated in a counterclockwise direction and the disk inserting port is closed by a door 4a at this time. A protrusion 4b is provided at the upper part of the door 4a toward the outside. Thus, even when the tip of a second disk is directed toward the top of the door, the tip of the disk is caught by the protrusion 4b and the disk can not be inserted under the disk guide 6. Thus, the erroneous insertion of the disk is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk device such as a CD player and, more particularly, to a structure of an insertion opening of the optical disk.

[0002]

2. Description of the Related Art FIG. 2 shows an example of the structure of a conventional insertion door of a CD player. Although the floating chassis is not shown, the disk motor 1, the clamper holder 2 and its elevating mechanism (not shown), the disk guide 6, the rubber roller arm 4, and its rotating mechanism (not shown) shown in the figure, It supports an optical pickup (not shown) and its feed mechanism, and is supported by the main body chassis in a floating state by a damping mechanism composed of a spring and a damper during reproduction in which the disk 8 is clamped. When the disk is unclamped, the floating chassis is locked to the main chassis by a lock mechanism.

[0003] The disk motor 1 is fixed to a floating chassis, and its rotating shaft has a turntable 1a.
Is fixed. The clamper holder 2 has the clamper 3 mounted thereon and is moved up and down by an elevating mechanism. The disk guide 6 is fixed to the floating chassis. The rubber roller arm 4 rotatably supports the rubber roller 5, is rotatably supported by the floating chassis via the shaft 7, and is rotated by a rotation mechanism. A door 4a for opening and closing the disc insertion opening is fixed to the rubber roller arm 4.

FIG. 2A shows a disk unclamped state. At this time, the clamper holder 2 is raised, and the rubber roller arm 4 is rotated clockwise, and is urged by a spring to press the rubber roller 5 against the disk 8 inserted between the disk guide 6 and the rubber roller 5. And
The rubber roller 5 is driven to rotate by a drive mechanism (not shown) and sends the disk 8 onto the turntable 1a.

After that, the clamper holder 2 is lowered to lower the clamper 3 on the turntable 1a, whereby the turntable 1a attracts the clamper 3 by magnetic force and the disk 8 is clamped. In addition, the lock of the floating chassis is released, and the rubber roller arm 4
Is rotated counterclockwise, the rubber roller 5 is separated from the disk 8. In this way, the floating chassis shown in FIG.
Playback of the disc is performed. At this time, the door 4a covers the disc insertion port. The operation opposite to the above is performed when the disc is ejected after the reproduction is completed.

[0006]

In the above-described conventional CD player, the door 4a closes the disc insertion slot during disc reproduction, but since the door 4a is supported by the floating chassis, the door 4a cannot be moved. it can. Therefore, the disc can be pushed under the disc guide 6 by pushing down the door 4a with the second disc shown in the figure. Such an operation may damage the disk or break the device. Further, if the height of the door 4a is increased to prevent erroneous insertion of a disc, the rotation angle of the rubber roller arm 4 becomes large, and the height of the apparatus becomes high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the invention is to prevent an erroneous insertion of a disk without increasing the height of a door closing a disk insertion slot. A playback device is provided.

[0008]

An optical disk reproducing apparatus according to the present invention has a projection for preventing an optical disk from being inserted from a gap between the optical disk insertion opening and the insertion opening when the door is opened and closed. It is provided on the door.

In the above optical disk reproducing apparatus,
When the door is attached to the feed roller support arm and the feed roller support arm is rotated to a position where the feed roller is pressed against the optical disc, the door opens the optical disc insertion slot, and the feed roller support arm connects the feed roller to the optical disc. The door is configured to close the optical disk insertion slot when the door is turned to a position separated from the optical disk.

[0010]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1A shows a CD according to an embodiment of the present invention.
FIG. 1 shows the disc unclamped state of the player, and FIG.
(B) shows a disc clamp state of the CD player. In the figure, parts having the same functions as those shown in the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted.

A projection 4b is provided on the upper portion of the door 4a of the CD player according to the embodiment. For this reason, in the disk clamp state shown in FIG. 1B, even if the tip of the second disk is tilted upward, it is caught by the projection 4b and cannot be inserted under the disk guide, thereby preventing erroneous insertion of the disk. .

Although the embodiment is constructed as described above, the invention is not limited to this. For example, instead of fixing the door 4a as a separate member to the rubber roller arm 4, the door is integrally formed with a member constituting the rubber roller arm. May be formed.

[0013]

According to the present invention, erroneous insertion of a disc is prevented without increasing the height of a door closing a disc insertion slot, and the disc is not damaged. Further, the device can be made thin.

[Brief description of the drawings]

FIG. 1A is a side view showing a main part of a CD player according to an embodiment of the present invention, and FIG. 1B is a side view showing another state of the main part.

FIG. 2A is a side view showing a main part of a conventional CD player, and FIG. 2B is a side view showing another state of the main part.

[Explanation of symbols]

 Reference Signs List 1 disk motor, 1a turntable 2 clamper holder 3 clamper 4 rubber roller arm, 4a door, 4b projection 5 rubber roller 6 disk guide 7 axis 8 disk

Continuing on the front page (72) Inventor Shinji Masuda 1-14-6 Dogenzaka, Shibuya-ku, Tokyo Co., Ltd. Kenwood Corporation (72) Inventor Atsushi Ohno 1-14-6 Dogenzaka, Shibuya-ku, Tokyo Co., Ltd. Kenwood Corporation (72) Inventor Midori Murakami Kenwood Co., Ltd. 1-14-6 Dogenzaka, Shibuya-ku, Tokyo

Claims (2)

[Claims] 1. An optical disk playback apparatus comprising: a projection for preventing an optical disk from being inserted through a gap between the door and the insertion slot when the door for opening and closing the optical disk insertion slot is closed. apparatus. 2. The door is mounted on a feed roller support arm, and when the feed roller support arm is rotated to a position where the feed roller is pressed against the optical disc, the door opens the optical disc insertion slot, and the feed roller support arm is opened. 2. The optical disc apparatus according to claim 1, wherein the door closes the optical disc insertion slot when the feed roller is rotated to a position where the feed roller is separated from the optical disc.