JPH10172215A - Disc loading apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a thinner mechanism by moving downward a self-aligning member when providing the self-aligning member to move in the vertical direction against a turntable to load or eject a disc for the turntable. SOLUTION: When arms 6, 7 are driven in the direction to become close with each other, a contact plate 10 is depressed to move downward a self- aligning member 8. When the arms 6, 7 are driven to become far with each other, the arms 6, 7 are separated from the contact plate 10 and the self-aligning member 8 moves upward with an elastic force of a compressed coil spring 11'. When a disc 1 is loaded, a clamper 3 rises and after the disc 1 is fed on the turn table by a loading apparatus under the condition that the self-aligning member 8 moves downward, the self-aligning member 8 rises to move downward the clamper 3. The clamper 3 is attracted by a magnet 12 fixed to the self- aligning member 8. The disc 1 is driven to rotate by a disc motor 5 conforming to the clamper 3 positioned by the self-aligning member 8. Thereby, the mechanism can be formed thinner as much as the distance indicated by D.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk recording / reproducing apparatus, and more particularly to a disk mounting apparatus for mounting a disk on a turntable.

[0002]

2. Description of the Related Art FIG. 4A is a cross-sectional view showing a disk mounting state of a conventional disk mounting apparatus, and FIG. 4B is a cross-sectional view showing a disk loading or ejecting state of the same disk mounting apparatus. Disk motor 5 shown in the figure
Is fixed to the mechanical chassis 13. The turntable 2 is fixed to the rotating shaft of the disk motor 5. At the center of the turntable 2, a convex portion 2a for positioning the disk 1 is integrally formed.

[0003] The clamper 3 is mounted on a clamper lift plate 4 and is disposed above the turntable 2 and is moved up and down by the vertical movement of the clamper lift plate 4. When the disc is loaded, the disc 1 is fed onto the turntable 2 by a loading device (not shown) with the clamper 3 raised, and then the clamper 3 is lowered. Then, the magnet 12 with the clamper 3 fixed to the turntable 2
Is adsorbed. As shown in FIG. 4A, the disk 1 is positioned on the convex portion 2a, is pressed against the turntable 2 by the clamper 3, and is driven to rotate by the disk motor 5.

[0004]

In the above-described conventional disk mounting apparatus, when loading or ejecting the disk 1, the disk 1 is turned so as to avoid the projection 2a of the turntable 2 as shown in FIG. The distance indicated by A from the upper surface of the table 2 must be made. Therefore, a space for the clamper 3 must be provided from the upper surface of the turntable 2 by a distance indicated by B in FIG. 4A, and there is a problem that the mechanism becomes thick.

The present invention has been made in view of the above-mentioned point, and an object of the present invention is to make it possible to load or eject a disk without leaving a disk larger than an upper surface of a turntable, thereby making a conventional mechanism possible. An object of the present invention is to provide a disk mounting device that can be made thinner than a disk.

[0006]

According to the disk mounting apparatus of the present invention, a centering member which fits into a center hole of a disk is provided so as to be vertically movable with respect to a turntable, and the disk is loaded or ejected with respect to the turntable. The alignment member is configured to move down when the adjustment is performed.

Further, in the disk mounting device, the disk is mounted or released by vertically moving the alignment member.

Further, in each of the disk mounting devices, the alignment member is urged upward, and the alignment member is moved up and down by the movement of an arm which comes into contact with the alignment member or a member fixed to the alignment member. Things.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk loading device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1A is a plan view of a disk mounting device according to an embodiment of the present invention.
FIG. 2B is a cross-sectional view showing the disk mounting device. FIG.
FIGS. 1A and 2B are a plan view and a cross-sectional view, respectively, showing the same disc mounting apparatus.
2B shows the state when the disk is mounted, and FIGS. 2A and 2B show the state when the disk is loaded or the disk is ejected. 1 (a) and 1 (b) show some parts except for members.

The disk motor 5 shown in FIG. 1 is fixed to a mechanical chassis 13. A turntable 9 is fixed to a rotating shaft of the disk motor 5. A centering member 8 for positioning the disk 1 is fitted to the turntable 9 so as to be vertically movable. A contact plate 10 is fastened to the bottom of the alignment member 8 with a screw 14, and the contact plate 10 extends from the slit of the turntable 9 to the outside of the turntable 9.

A compression coil spring 11 interposed between the turntable 9 and the alignment member 8 urges the alignment member 8 upward. The arms 6 and 7 slidably supported in the left-right direction by the mechanical chassis 13 are driven by a drive mechanism (not shown) in a direction approaching or moving away from each other. When the arms 6 and 7 are driven in the approaching direction,
The contact plate 10 is pushed down to lower the alignment member 8. When the arms 6 and 7 are driven away from each other, the arms 6 and 7 are separated from the contact plate 10 and the centering member 8 is raised by the elastic force of the compression coil spring 11.

The clamper 3 is mounted on the clamper lift plate 4 and is disposed above the turntable 9 and is moved up and down by the vertical movement of the clamper lift plate 4. When the disc is mounted, the clamper 3 is raised, and the disc 1 is fed onto the turntable 2 by a loading device (not shown) in a state where the alignment member 8 is lowered, and then the alignment member 8 is raised and the clamper 3 is lowered. You. Then, the clamper 3 is attracted to the magnet 12 fixed to the alignment member 8. The disk 1 is positioned on the alignment member 8 as shown in FIG. 1B, is pressed against the turntable 2 by the clamper 3 and is driven to rotate by the disk motor 5.

As shown in FIG. 2B, when the disk 1 is loaded or ejected, the distance between the disk 1 and the upper surface of the turntable 2 is a small distance C because the alignment member 8 is lowered. be able to. Therefore, the space for the clamper 3 can be made only the distance indicated by D in FIG. 1B from the upper surface of the turntable 2, and the mechanism can be made thin.

FIG. 3 shows a schematic configuration of a disk mounting apparatus according to another embodiment of the present invention. In this example, the alignment member that moves up and down by fitting with the turntable 9 is the alignment member lower portion 8a.
And a centering member upper portion 8b, so that the centering member can expand and contract vertically. The centering member upper portion 8b is raised and lowered by a compression coil spring and an arm in the same manner as shown in FIGS. 1 and 2, but those members are not shown in FIG.

When the centering member upper portion 8b rises, the centering member lower portion 8a is lifted by the centering member upper portion 8b and rises.
FIG. 3 (a) shows the alignment member lower portion 8a and the alignment member upper portion 8b.
Indicates a state in which has risen. When the alignment member upper portion 8b is lowered, the alignment member lower portion 8a is lowered by its own weight. FIG.
(B) shows a state where the alignment member lower part 8a and the alignment member upper part 8b are lowered. Other configurations are the same as those shown in FIGS. In this example, the thickness when the alignment member is lowered can be reduced, and the mechanism can be further reduced.

In the embodiment, the example in which the alignment member is moved up and down by the lifting mechanism has been described. However, the alignment member may be moved up and down by the disk by abutting the disk and the tapered portion of the alignment member when the disk is transferred. .

[0017]

According to the disk mounting apparatus of the present invention,
Since the centering member for positioning the disk in the radial direction retreats from the moving path for transferring the disk in the horizontal direction, the distance for separating the disk upward from the turntable can be reduced, and the mechanism can be thinned.

Further, since the alignment member is raised in the direction of the clamper when the disc is mounted, the stroke for moving the clamper up and down can be reduced, and the clamp mechanism can be downsized.

[Brief description of the drawings]

FIG. 1A is a plan view showing a disk mounting device according to an embodiment of the present invention excluding some members, and FIG. 1B is a cross-sectional view showing the disk mounting device.

FIG. 2A is a plan view showing another state of the disk mounting apparatus with some members cut away, and FIG. 2B is a state of the disk mounting apparatus shown in FIG. 2A. It is sectional drawing.

FIG. 3 is a sectional view showing a schematic configuration of a disk mounting device according to another embodiment of the present invention.

FIG. 4A is a cross-sectional view showing an example of a conventional disk mounting device, and FIG. 4B is a cross-sectional view showing another state of the disk mounting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc 2 Turntable, 2a convex part 3 Clamper 4 Clamper raising / lowering plate 5 Disk motor 6, 7 Arm 8 Alignment member 9 Turntable 10 Contact plate 11 Compression coil spring 12 Magnet 13 Mechanical chassis 14 Screw

Claims (3)

[Claims] An alignment member fitted to a center hole of a disk is provided so as to be vertically movable with respect to a turntable, and the alignment member is lowered when the disk is loaded or ejected from the turntable. Disk mounting device configured in 2. The disk mounting device according to claim 1, wherein the disk is mounted or released by vertically moving the alignment member. 3. The disk according to claim 1, wherein the centering member is urged upward, and the centering member is moved up and down by the movement of an arm in contact with the centering member or a member fixed to the centering member. Mounting device.