JP2848240B2 - Disc tray - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk tray in which disks having different diameters are installed, moved, and then mounted on disk rotation driving means.

[0002]

2. Description of the Related Art In recent years, disc players for reproducing discs of various diameters have been required to maintain the performance while reducing the number of parts and improving the assemblability for cost reduction. Along with this, a reduction in the number of parts is required for a disk tray, which is one of the components.

[0003] The configuration of a conventional disk tray will be described below. FIG. 5 is a perspective view showing the configuration of a conventional disk tray.

In FIG. 5, reference numeral 11 denotes a disk player main body, and reference numeral 21 denotes a disk tray. In order to enable the disks 3 having different diameters to be installed concentrically, the disk 3 is positioned closer to the center according to the outer diameter of the disk 3. First, second, third, and fourth annular concave portions 24 to 27 are provided, and the disks 3 of each diameter are installed in each of the annular concave portions 24 to 27 on a one-to-one basis.
Reference numeral 22 denotes a disk protection member, which is the third and fourth annular concave portions 26, 2 on which the large disk 13 which is easily damaged is installed.
7 are provided on the lower surface of the disk 7 to prevent direct contact between the signal surface of the disk 3 and the disk tray 21 to prevent deterioration of the signal reading ability due to scratches or the like. Reference numeral 10 denotes a tray driving device for moving the disc tray 21 between a first position at which the disc 3 can be taken out and a second position at which the disc 3 is reproduced, and 12 rotates the disc 3 on the disc tray 21 at the second position. Disk rotation driving means for causing

The operation of the disk tray configured as described above will be described. As is well known, in order to rotate and reproduce the disks 3 of various diameters by the disk rotation driving means 12, a disk tray 21 having concentric annular concave portions corresponding to the respective diameters is placed on the disk 3 at the first position. Is installed,
It is moved to the second position by the tray driving means 10 and rotated and reproduced by the disk rotation driving means 12.

[0006]

However, in the conventional configuration, in order to prevent scratches and dirt from adhering to the signal surface of the disk, it is necessary to prevent the disk from contacting the tray with the bottom surface of the annular concave portion of each diameter. In this case, it is necessary to provide a sufficient number of disk protection members in a one-to-one relationship with the diameter of the disk. In this case, only the types of disk diameters on which the disk protection members can be installed are required. Accordingly, the number of disk protection members increases, and the number of parts and the number of steps for assembling also greatly increase.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems.
It is an object of the present invention to provide a disk tray which is cost-effective in terms of assembly man-hours.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a method for forming a plurality of annular concave portions having different diameters corresponding to the settable disk diameters on a bottom surface of a plurality of annular concave portions having a continuous step. , An integrated disk protection member is provided.

[0009]

With this configuration, the disk tray can be configured by greatly reducing the number of disk protection members for the types of disks having a diameter that can be installed and requiring prevention of scratches and dirt adhesion. Improve the assemblability less,
A cost-effective disc tray can be provided.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a disk tray according to a first embodiment of the present invention, and FIG. 2 is an enlarged view of a main part of the disk tray. In FIG. 1, similarly to the conventional example, in order to enable four types of disks 3 having different diameters to be installed concentrically on the disk tray 1, first to fourth annular members corresponding to four types of disk diameters are provided. Recesses 4 to 7 are provided. There is a first annular recess 4 having the smallest diameter at the innermost circumference,
Next, the second annular concave portion 5 having the next smaller diameter whose bottom surface is raised by one step from the bottom surface of the first annular concave portion 4, and the outer peripheral surface has a bottom surface one step higher than the second annular concave portion. A third annular recess 6 having a smaller diameter is provided, and a fourth annular recess 7 having the largest diameter and a bottom surface one step higher than the bottom surface of the third annular recess 6 is provided on the outer periphery thereof. I have. Numeral 2 denotes a disk protection member, which is provided continuously on the bottom surfaces of the fourth annular concave portion 7 and the third annular concave portion 6 as shown in FIG. In this embodiment, four disk protection members 2 are provided for one type of disk 3 so that the disk can be stably installed. This one kind of disk 3
Needless to say, the number of disk protection members 2 for protecting the disk need not be four.

The disk protective member 2 is generally made of felt, synthetic leather, or the like. To make the structure inexpensive, a sheet material such as felt, synthetic leather, or the like is formed by using an adhesive or the like to form a disk tray 1. Attached to. For this reason, since the disk protection member 2 has a thickness, when the disk protection member 2 is attached to the disk tray 1, as shown in FIG. The position where the height changes is larger than the outer diameter 8 of the small disk 3a corresponding to the annular concave portion 6 and the position where it enters the annular concave portion 7 in order to prevent the disk 3a from entering the outer diameter 8 of the disk 3a. It has become. Thus, the small disk 3a can be installed without being affected by the thickness of the disk protection member 2, and the large disk 3b can be installed as shown in FIG. In addition, since the disk protection member 2 is a flat plate having a waist and flexibility, the disk protection member 2 is prevented from peeling off due to bending at a position where the height changes.
In consideration of the assemblability of the disk protection member 2, the mounting surface at the position where the height changes is a continuous inclined surface 9.

This makes it possible to use one disk protection member corresponding to the first diameter disk and one disk protection member corresponding to the second diameter disk.

As described above, the number of disk protection members 2 for holding disks of two different diameters is half that required conventionally, thereby reducing the number of parts used and the number of assembly steps by about half. It becomes possible.

In this embodiment, the disk protection member 2 is provided only in the two stages of the third and fourth annular concave portions 6 and 7, but it is needless to say that the present invention is not limited to this.

[0016]

As described above, according to the present invention, it is possible to greatly reduce the number of disk protection members for holding disks of several diameters from the conventionally required number, thereby reducing the amount of material used. Thus, the number of assembling steps can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disc tray according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of a disk tray according to the first embodiment.

FIG. 3 is a sectional view of a disk protection member when a small disk is installed.

FIG. 4 is a sectional view of a disk protection member when a large disk is installed.

FIG. 5 is a perspective view of a conventional disk tray.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 disk tray 2 disk protection member 3 disk 4 first annular recess 5 second annular recess 6 third annular recess 7 fourth annular recess 8 annular recess outer diameter position 9 inclined surface 10 tray driving means 11 body 12 disk Rotation drive means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G11B 33/02 501 G11B 33/02 503 G11B 17/04 301

Claims (3)

(57) [Claims] 1. A tray driving means for moving a disc tray, and a first position of a main body in which a disc can be set by the tray driving means to a second position in the main body in which the disc can be rotationally driven by a rotary driving means. A disk tray for use in a disk player constituted by a movable disk tray, wherein said annular concave portion has a plurality of circular concave portions having a plurality of diameters different in depth and capable of concentrically installing a plurality of diameter disks. A disc tray provided with an integral disc protection member provided over a bottom surface of a plurality of continuous annular concave portions having different diameters; 2. An adjacent annular concave portion having a diameter larger than the outer diameter of one of the small-diameter annular concave portions and a bottom surface of the other small-diameter annular concave portion extending from the bottom surface of the other small-diameter annular concave portion. 2. The disk tray according to claim 1, wherein the disk tray has a surface of a disk protection member having a variable height. 3. A boundary surface between a bottom surface of a small-diameter annular concave portion and a bottom surface of a large-diameter annular concave portion having a different height among mounting surfaces of a disk protection member on a disk tray is constituted by an inclined surface. The disc tray according to claim 2, wherein