JPH01312799A - Disk reproducing device - Google Patents

Abstract

PURPOSE:To make even a large sized disk stable with less vibration without using a strong disk drive motor by forming a blade part having a shape acting a resistance received by air resistance at driving in a direction stabilizing a disk to a disk support part. CONSTITUTION:A blade 2 is arranged to a disk stabilizer 1. The disk stabilizer 1 is brought into contact with a magnet clamper 3 and fixed by a bonding or proper means. Moreover, the disk stabilizer 1 is integrated up to the blade 2 by a material with light and spring property such as a synthetic resin. Through the constitution above, even a large sized disk is made stable without using a motor with a large torque. Furthermore, the blade is provided to a part being a loop of the vibration of the disk and the vibration is prevented efficiently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disc reproducing device, and more particularly to a disc reproducing device suitable for reducing the adverse effects of disc vibration on an original signal.

[Conventional technology]

In a disc recording/reproducing device having the functions of a player, a recorder, or both, the most important thing is faithful recording and reproduction of the original signal. Recently, vibration has been attracting a lot of attention as a factor that has an adverse effect on this. Especially when it comes to digital audio (e.g. CDs)
It is known that the sound recording performance of a player (player) can be dramatically improved by absorbing and removing unnecessary vibrations.

For this reason, some disk holders are equipped with a disk stabilizer to keep the disk stable (for example, r
FMfan Extra Edition” (published on November 20, 1988, pages 111 and 125-127).

[Problem to be solved by the invention]

In the above conventional technology, the disc is stabilized by the weight of the disc stabilizer, but with this method, the motor load for rotating the disc increases at startup and stop.
There is a limit to the weight of the stabilizer. When considering a stabilizer for a disc with a diameter of 30 centimeters like a VD, the motor must be extremely powerful.

SUMMARY OF THE INVENTION An object of the present invention is to provide a disc playback device that can reduce vibrations and stabilize even large discs without using a powerful disc rotation motor.

[Means to solve the problem]

The above object is achieved by arranging blades on the disk holding part.

[Effect]

A disk holder equipped with vanes rotates together with the disk. This rotation generates a drag force due to air resistance on the blades of the disk holder, and this force can hold down the disk, prevent resonance, and stabilize the disk.

〔Example〕

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

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a sectional view of the same side.

In these figures, a disc stabilizer 1 is provided with blades 2. As shown in FIG. The disc stabilizer 1 is in contact with the magnetic clamper 3 and is fixed by adhesive or other suitable means. It is preferable that the disc stabilizer 1 is made of synthetic resin or the like, which is lightweight and has spring properties, and is integrally molded up to the blades 2.

In addition, 4 indicates a CD, 5 indicates a turntable, and 6 indicates a motor.

〔Effect of the invention〕

According to the present invention, even large-sized disks can be stabilized without using a large-torque motor.

Furthermore, it is possible to efficiently prevent vibration by providing a blade at the part of the disk that becomes the antinode of vibration.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a sectional view of the same. 1...Disc stabilizer, 2...Blade, 3...
-Magnetic clamper, 4...CD (compact disc), 5...turntable, 6...motor.

Claims (1)

[Claims] 1. In a disc playback device that holds a disc in a disc holder and rotates it, and reproduces a signal from the disc, drag force applied to the disc holder due to air resistance during rotation stabilizes the disc. 1. A disc playback device characterized in that a blade portion is formed with a shape that acts in a direction to cause the disc to change.