KR19980044033U - Disc presser on optical disc player - Google Patents

Abstract

The present invention relates to a disc pressing device of a disc player, and forms a groove 240 on the circumferential surface to clamp the disk 10 seated on the turntable 70, and the groove of the clamper 200 The lower end is fastened so as to flow up and down in a state in which the separation is prevented to 240, and is connected to the lifting means provided on one side of the deck to operate the holder 300 up and down at a predetermined angle, and the spindle during the lowering operation of the holder 300. The landing of the clamper 200 of the disk 10 coincides with the center line of the cap 60, which is mounted at the end of the rotation shaft 50 of the motor 40, into which the disk hole of the disk 10 is fitted, and the center line of the clamper 200. The guide means for guiding to be made precisely, characterized in that the guide means for the vertical operation of the elevating means on the bottom surface of the V-shaped groove 220 formed in the center of the upper surface of the clamper 200, and the holder 300 opposite thereto. Along the V-shaped groove 220 And a v-shaped protrusion 320 to prevent the clamper 200 from tilting, and the v-shaped protrusion of the holder enters the v-shaped groove at the same time as the clamper lands on the disc and is located at the center line of the cap, thereby being located on the top surface of the disc. There is an effect that a stable landing is achieved without tilting the lower surface of the clamper.

Description

Disc presser on optical disc player

1 is a cross-sectional view showing the configuration of a disc pressing device of an optical disc player according to the prior art;

Figure 2 is a cross-sectional view showing the configuration and operation of the disk pressing device of the optical disc player 2 (a) and 2 (b) according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: disk 40: spindle motor

50: rotation axis 60: cap

70: turntable 200: clamper

220: V-shaped groove 300: Holder

320: V-shaped protrusion

The present invention relates to a disc pressing device of an optical disc player that achieves a stable landing of a clamper that presses a disc seated on a turntable by attaching it to its tip during vertical operation of the disc pressing device.

In general, a disc pressing device of an optical disc player compresses a rotating disc mounted on one side of a deck for tracking operation of a pickup and stability of a device.

As shown in FIG. 1, the disk pressing device includes a clamper 20 for compressing the disk 10 and a holder 30 for attaching the clamper 20 and acting up and down while applying a pressing force to the clamper 20. When the disk 10 of the disk 10 is fitted to the cap 60 mounted on the rotation shaft 50 end of the spindle motor 40 and the disk 10 is seated on the turntable 70, the disk pressing device is lowered. Thus, the clamper 20 mounted on the bottom of the holder 30 compresses the disk 10 at a predetermined pressure.

In this state, the rotation shaft 50 rotates according to the operation of the spindle motor 40, and the turntable 70, the cap 60, and the disk 10 rotate in the same manner. At this time, the disk 10, which rotates at a high speed due to the clamping of the clamper 20, is stabilized and the laser light emitted from the light source of the optical system is projected onto the recording surface of the disk 10, thereby reproducing image and sound signals.

However, the disc pressing device of the conventional optical disc player has the clamper 20 of the gap 80 due to the gap 80 between the holders 30 considering the eccentricity of the clamper 20 during the high speed rotation of the disc 10. The disk 10 is landed in a state inclined to one side, that is, in an inclined state. As a result, the clamper 20 of the disk 10 is incompletely squeezed, which causes the disk 10 to shake during the high-speed rotation, resulting in poor recording surface reproduction of the disk 10.

The present invention has been made to solve the above problems, the object of the present invention is to provide a stable landing of the clamper on the disk surface with a guide means for matching the center line between the clamper and the cap in the lowering operation of the disk pressing device The present invention provides a disc pressing device of an optical disc player.

When described in detail with reference to the accompanying drawings an embodiment of the present invention for realizing the above object is as follows.

In the drawing, the disk pressing device of the disk player according to the present invention forms a recess 240 on a circumferential surface of the clamper 200 for pressing the disk 10 seated on the turntable 70; The lower end is fastened around the groove 240 so that up and down flow is prevented from being separated from the groove 240 of the clamper 200, and is connected to a lifting means provided on one side of the deck to operate up and down at a predetermined angle ( 300); In the lowering operation of the holder 300 is mounted to the end of the rotation shaft 50 of the spindle motor 40 to match the center line of the cap 60 and the center line of the clamper 200 in which the disk ball of the disk 10 is fitted (the disk ( The guide means for inducing the landing of the clamper 200 of 10) to be made correctly is characterized as a configuration.

The guide means is indented to the v-shaped groove 220 formed in the center of the upper surface of the clamper 200 and the v-shaped groove 220 in accordance with the vertical operation of the lifting means on the bottom surface of the holder 300 facing the clamper (clamper ( It consists of a V-shaped protrusion 320 to induce a stable landing of 200.

Referring to the effect of the present invention by the above configuration is as follows.

2 (a) shows a state where the disk pressing device is raised by the elevating means. At this time, the v-shaped protrusion 320 of the holder 300 maintains the state spaced apart from the v-shaped groove 220 of the clamper 200 by a predetermined range.

In the above state, as shown in FIG. 2 (b), the disc hole of the disc 10 is inserted into the cap 60 mounted on the upper end of the spindle motor 40 so that the disc 10 rests on the turntable 70. The disk presser lowers. At this time, the V-shaped protrusion 320 of the holder 300 enters the V-shaped groove 220 at the same time as the clamper 200 lands on the disk 10 and is located at the center line of the cap 60 so that the upper surface of the disk 10 is located. In the lower surface of the clamper 200, a stable landing is made.

Therefore, the balance of the disk 10 rotating at a high speed is maintained, so that a good reproduction of the recording system of the disk 10 is ensured.

Claims (2)

A clamper for forming a recess in the circumferential surface to press the disk seated on the turntable; A holder which is fastened at a lower end so as to flow up and down in a state in which the recess of the clamper is prevented from being separated, and is connected to a lifting means provided at one side of the deck to operate up and down at a predetermined angle; Optical disks, characterized in that the guide disk is mounted to the rotary shaft end of the spindle motor during the lowering operation of the holder to guide the clamper landing of the disk accurately by matching the centerline of the cap into which the disk hole of the disk is fitted and the centerline of the clamper. Player's disc presser. The method of claim 1, The guide means is formed by forming a V-shaped groove formed in the center of the upper surface of the clamper and a V-shaped protrusion which is settled in the V-shaped groove according to the vertical movement of the elevating means on the lower surface of the holder opposite thereto to match the centerline of the clamper and the cap. Disc pressing device of the optical disc player, characterized in that.