JP2570180B2 - Arrangement structure of disk rotating table - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between a disk rotation table and a drive motor in precision equipment such as a CD-ROM, and more particularly to a disk rotation table arrangement having an effect of preventing vibration due to motor play.

[0002]

2. Description of the Related Art A disk rotating table of this kind is rotated by being connected to a rotating shaft of a driving motor. In some cases, vibration is generated due to play of a motor. In this case, a reading error may occur in reading data from a CD. there were.

Conventionally, the play of the disk rotating table driving motor has been reduced as shown in FIGS. FIG. 2 uses an attraction force generated by the magnetic force of a magnet, and FIG. 3 uses a spring force. These devices remove the backlash of the motor by applying a load such as a lateral pressure.

[0004]

In the prior art shown in FIGS. 2 and 3, parts such as magnets and springs are used to apply some lateral pressure to a rotary table or a motor shaft or the like in order to remove the play. There was a disadvantage that the structure became complicated. Furthermore, these parts have disadvantages such as an increase in cost and a change in load with time.

[0005]

In order to solve the above-mentioned problems, the present invention has an arrangement structure of a disk rotating table in which a gap between a rotating table and a mechanical chassis installed below the rotating table is arranged in a concave manner.

[0006] With the above structure, a pressure difference is generated in the flow of air below the rotary table, and the dynamic table pressure is applied to the rotary table to remove the play of the motor.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings. FIGS. 1A and 1B are diagrams showing an embodiment of the present invention, in which FIG. 1A is a side view, and FIG. 1B is an arrow view as seen from the AA direction of FIG.

In the figure, a rotary table 2 on which a disk 1 is mounted is connected to a drive motor 4 via a rotary shaft 3. In the present invention, the mechanical chassis 5 below the turntable 2 is formed in a cylindrical shape, and a slope 5 a is provided on a surface facing the turntable 2. By providing such a gradient 5a, a pressure difference is generated in the flow of air below the table 2 to apply pressure to the rotary table, thereby eliminating the effect of the play of the drive motor.

[0009]

According to the present invention, it is possible to obtain the same play as that of the prior art without increasing the number of parts. In addition, since the air flow is used, there is also an effect that the influence over time is eliminated.

[Brief description of the drawings]

FIGS. 1A and 1B are configuration diagrams of an embodiment of the present invention, in which FIG. 1A is a side view, and FIG.

FIG. 2 is a diagram showing a conventional technique using a magnet.

FIG. 3 is a diagram showing a conventional technique using a spring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc 2 Rotary table 3 Rotary axis 4 Driving motor 5 Mechanical chassis 6 Magnet 7 Spring

Claims (3)

(57) [Claims] And 1. A disk rotating table, and a drive motor, the disk, characterized in that to change the gap between the mechanical chassis located below the rotary table to apply air pressure to the rotary table to take Motagata Rotary table arrangement structure. 2. A drive motor, a rotary table connected to the drive motor and disposed on a chassis, and a motor play.
And a gradient provided on a chassis surface with respect to the rotary table for applying air pressure to the rotary table. 3. The arrangement structure of a disk rotating table according to claim 1, wherein a chassis surface below the rotating table is projected, and an end face is inclined with respect to the rotating table.