JPH079236Y2 - Disc tray of the disc carrier - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention is equipped with a compact disk for audio with a diameter of 8 cm, a compact disk for audio with a diameter of 12 cm, a compact disk for video, and a disk for video with a diameter of 20 cm and 30 cm. The present invention relates to an improvement of a disc tray that is used in a transport device that transports a disc from a position to a turntable and transports the disc to a position where the disc is placed and set on the turntable.

[Prior Art] A conventional disc tray of this type of disc carrier is
The upper surface thereof is formed as a flat surface as a whole so that the various sizes of disks can be placed thereon.

After the disk is placed on the turntable, the mounting surface stands by at a position slightly lower than the turntable.

[Problems to be solved by the device]

The disk set on the turntable as described above rotates to reproduce the recording, but as the disk rotates, the air on the surface in contact with the disk also starts flowing in the same direction as the rotation of the disk.

Then, since there is a disc tray near the bottom of the disc, air will flow over the disc tray,
There is a drawback that wind noise is generated.

The present invention is intended to solve the above-mentioned problems of the disc tray of the conventional disc transfer device, in which the rotational linear velocity of the disc surface becomes faster toward the outer periphery of the disc having a large diameter, so that the air flow becomes closer to the outer periphery. Focusing on the fact that the speed also increases, the object is to increase the gap between the disc and the disc tray toward the outer periphery to reduce wind noise generated in the disc tray.

[Means for Solving the Problems]

The present invention relates to a means for a disc tray of a disc transporting device for achieving the above-mentioned object, in a tray for transporting a loaded disc to a turntable, from the center side of the disc supporting surface toward the outer peripheral side. The taper surface is formed so that the outer peripheral side is lowered.

[Action]

Since the disc tray of the disc carrier of the present invention has a tapered surface that descends from the center side of the disc supporting surface to the outer periphery, after the disc tray sets the disc on the turntable, the upper surface of the turntable When it is further lowered, the gap between the disc and the disc tray increases toward the outer circumference.

However, the air flow on the disk surface becomes faster toward the outer circumference, but becomes slower as the distance from the disk surface increases.

Therefore, in the outer peripheral portion where a large wind noise is generated, the velocity of the air flow on the disc tray surface is weakened as the distance between the two increases, and the wind noise can be reduced.

[Example of device]

 Next, an example of implementation of the present invention will be described with reference to the drawings.

This tray A, compact disk 1 for audio with a diameter of 8 cm, video disk with a diameter of 12 cm, mounting area 2 for a compact disk for audio, disk mounting area 3 for a video with a diameter of 20 cm, diameter 30 cm The video disk mounting portion 4 is formed on the upper surface over several steps.

Further, from the mounting portion 4, a tapered conical surface 5 having a gentle conical shape that descends toward the outer circumference is formed.

This tray A is loaded from the loading position on which the discs of various sizes described above are placed by the transporting unit known as a conventionally known disc loading device.
After the disc is transported to the set position placed on the turntable, the disc is lowered to a position below the upper surface of the turntable and stands by.

Therefore, the gap between the lower surface of the disc set on the turntable and the tray A increases from the mounting portion 4 to the outer periphery.

When this disk is sandwiched between the turntable and the clamper and rotated by the rotation of the turntable, the air layer in contact with the turntable flows according to the rotation of the turntable.

The velocity of the air flow increases as the linear velocity of the disc increases toward the outer periphery of the disc, but decreases as the distance from the disc increases due to the resistance between the air layers.

Therefore, when the air flow in the outer peripheral portion hits the tray A, the speed of the air flow is slower than that in the case where the space between the tray A and the disk is equal, and the wind noise can be reduced more than in this case. It is a thing.

[Effect of device]

As described above, the present invention can reduce the wind noise caused by the rotation of the disc by only slightly changing the shape of the disc tray, and thus the cost is not increased. I have.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a plan view thereof. A: Disc tray, 4: Loading section, 5: Tapered surface.

Claims (1)

[Scope of utility model registration request] 1. A disc transporting device, wherein a tray for transporting a loaded disc to a turntable is formed with a tapered surface such that the outer peripheral side descends from the center side of the disc supporting surface toward the outer peripheral side. The device disc tray.