KR19980023451A - Disk Clamping Device for Optical Player - Google Patents

Abstract

The present invention discloses a disc clamping device of an optical disc player.

In general, in the optical disc player, since the components for clamping the optical disc on the turntable, that is, the clamper has a structure suspended on the clamp plate, interference occurs during the transfer of the optical disc. There is a problem that the product is enlarged by keeping enough space between each other. In addition, the clamper was easily detached by the impact from the outside, which caused a failure of the device.

In order to solve this problem, the present invention provides compact parts for clamping an optical disk such as a clamper on a turn table, thereby achieving compactness of the product, eliminating interference with the optical disk, and particularly stable even when an external shock is applied. The clamping operation can be performed.

Description

Disk Clamping Device for Optical Player

1 is a perspective view showing a disk clamping device of a typical optical disk player.

Figure 2 is a partially cutaway perspective view of the disk clamping device according to the present invention.

3 is a combined cross-sectional view of FIG.

4 and 5 are cross-sectional views showing an operating state.

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

10 ... Hemispherical guide boss 11 ... Guide hole

12,13 ... left and right guide grooves 20 ... pressure bar

21 ... Pressure plate 22 ... Pressure rod

30 ... clamper31 ... torsion spring

40 ... Stopper 50 ... Clamp Plate

S ... spring

The present invention relates to an optical disk player, and more particularly, to a disk clamping device for accurately seating and supporting an optical disk guided by a tray on a turn table.

In general, an optical disc player is provided with a clamping device in which a laser disc (hereinafter abbreviated as LD) and a compact disc (hereinafter abbreviated as CD) can be selectively mounted.

That is, as shown in FIG. 1, a clamp plate 3 is positioned on an upper portion of the turn table 2 that is axially supported by the rotation shaft 1 on the driving motor M, and the clamp plate 3 is located on the turn table ( A clamper 4 for pressing and supporting the optical disk D seated on 2) is provided.

However, such a clamping device causes interference with the clamper 4 installed on the lower surface of the clamp plate 3 in the process of guiding the optical disk D, thereby causing a problem of failing to perform a stable guiding operation. In order to solve the problem, the height between the turntable 2 and the clamper 4 must be sufficiently secured, resulting in a problem in that the compactness of the product cannot be achieved. In addition, since the clamper 4 has a structure suspended from the lower surface of the clamper plate 3, when the impact from the outside is applied, the clamper 4 is easily detached, resulting in a product defect.

The present invention has been made to solve such a conventional problem, and does not generate interference when guiding an optical disc, and in particular, it is possible to compact the product and to provide a stable clamping operation. It is an object to provide a disk clamping device.

In order to achieve the above object, the disc clamping device of an optical disc player according to the present invention extends in a hemispherical shape from a center upper surface of the turn table in clamping an optical disc seated on a turntable rotated by a spindle motor. A hemispherical guide boss formed at a center thereof with a guide hole communicating in the longitudinal direction, the left and right guide grooves communicating with the guide hole at a predetermined depth in a radial direction thereof; It is installed to be slidable up and down along the inner surface of the hemispherical guide boss, the lower plate is provided with an inverted triangular pressure plate, the pressure bar extending on the upper surface of the center of the pressure plate; A clamper installed on the left and right guide grooves, the clamper being slid and moved toward the turn table by the pressing of the pressing plate of the pressing table; A spring for elastically supporting the clamper in a direction opposite to the pressing direction of the pressing section; And a stopper formed to extend parallel to each other from an upper surface of the hemispherical guide boss around the guide hole to define an upper feed amount of the presser.

One preferable feature of the present invention is that a spring for elastically supporting the pressing table upward is provided between the lower surface of the pressing plate of the pressing table and the upper surface of the turn table.

Another desirable feature of the present invention is that the bottom surfaces of the left and right guide grooves of the hemispherical guide boss provided with the clamper form an inclined surface with a predetermined curvature, and the lower surface of the clamper has the same curvature as the inclined surfaces of the left and right guide grooves. It is in what forms a slope.

In the present invention, since each component for clamping is provided on the upper surface of the center of the turntable, interference does not occur during the guiding process of the optical disk, and compactness of the product can be achieved. Since the state can be maintained at all times, a stable clamping operation can be performed.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a disc clamping apparatus of an optical disc player according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a partially cutaway perspective view of the disk clamping device according to the present invention, Figure 3 is a combined cross-sectional view, Figure 4 and Figure 5 is a cross-sectional view showing an operating state.

As shown therein, the disk clamping apparatus of the optical disk player according to the present invention is roughly divided into a hemispherical guide boss 10, a presser 20, a clamper 30, and a stopper 40.

The above-mentioned hemispherical guide boss 10 extends from the center upper surface of the turntable T, and the guide hole 11 penetrates in the longitudinal direction in the center, and communicates with the guide hole 11 in the radial direction. Left and right guide grooves 12 and 13 are formed to have a predetermined depth.

The pressing table 20 is installed to be slidable in the up and down directions of the guide boss 10, that is, is installed to be slidable along the guide hole 11 and the left and right guide grooves 12 and 13. In the lower portion, an inverted triangular pressure plate 21 is provided, and the pressure plate 22 is formed on the upper portion of the pressure plate 21.

On the other hand, the clamper 30 is installed in the left and right guide grooves 12 and 13 of the hemispherical guide boss 10 so as to be slidable along the bottom surface, respectively, the pressing table 20 by the upper and lower sliding operation. It is selectively pressurized to slide along the left and right guide grooves 12 and 13 toward the turntable T.

At this time, it is preferable to have inclined surfaces 12a and 13a having a predetermined curvature in the bottom surface of the left and right guide grooves 12 and 13 so that the clamper 30 can be slid more smoothly. It will be desirable to have a slope 30a of the same slope as well.

In addition, the clamper 30 is elastically supported in the direction opposite to the pressing direction of the pressing table 20 by the spring 31, it is preferable to use the torsion spring 31 as such a spring (31) Do. That is, the hinge shaft 14 is provided on the hemispherical guide boss 10, the projection 32 is provided on each clamper 30, and the torsion spring 31 is inserted into the hinge shaft 14, By coupling one end to the projection 32, the clamper 30 will be elastically supported upwards, that is, in a direction opposite to the pressing direction of the pressing table 20. In addition, when the clamper 30 is elastically supported in this way, the pressing table 20 for pressing the clamper 30 also obtains a return force to the initial position. That is, the pressing table 20 is also elastically supported upward.

At this time, the spring (S) is interposed between the lower surface of the pressing table 20, that is, the lower surface of the pressing plate 21 and the upper surface of the turn table (T) in order to return the pressing table 20 to the initial position more reliably. This would be more desirable.

On the other hand, the stopper 40 prevents the presser 20 elastically supported upward by the torsion spring 31 and the spring S from being separated from the hemispherical guide boss 10 due to elastic force and impact from the outside. It is provided so as to be formed in the shape of a bridge (bredge) around the guide hole 11 of the hemispherical guide boss (10).

Reference numeral 50 is a conventional, a clamp plate that is rotated around the main chassis when clamping.

Looking at the operation of the present invention configured as described above is as follows.

First, when the optical disk D is seated on the upper surface of the turn table T by a disk conveying means (for example, a tray or a guide roller, etc.), not shown, the clamp plate 50 is rotated at the same time to press the pressure table 20. Pressurizing rod 22 is pressed downward. As a result, as shown in FIGS. 4 and 5, the entire presser 20 is slid downward along the left and right guide grooves 12 and 13 of the guide hole 11 of the hemispherical guide boss 10. The lower pressing plate 21 presses the clamper 30 positioned on the left and right guide grooves 12 and 13. Therefore, the clampers 30 are respectively conveyed toward the turntable T side, and the respective ends thereof pressurize and support the upper surface of the optical disk D seated on the turntable T. Therefore, the turn table T is driven to rotate through the spindle motor M and recorded and reproduced through a pickup unit (not shown).

On the other hand, when the optical disk D is to be taken out in such a state, when the clamp plate 50 is rotated to return to the initial position and releases the force that has pressed the pressing table 20, the pressing table 20 ) Is transferred upward by the elastic force of the spring (S) and the elastic force of the torsion spring (31) elastically supporting the clamper (30) upwards to be locked to the stopper (40) as a result of the clamper (30) and pressure As the base 20 is all restored to the initial position, the optical disc D can be taken out.

As described above, according to the disk clamping apparatus of the optical disk player according to the present invention, the components of the optical disk can be clamped on the upper surface of the turntable without separately providing a clamper on the clamp plate, thereby providing a compact product. It is possible to extend, and the interference in the process of transferring the optical disk is excluded, and in particular, the clamping operation can be stably performed even by the impact from the outside, thereby improving the reliability of the device.

Claims (3)

In clamping an optical disc seated on a turntable driven by a spindle motor, Left and right guide grooves extending from the upper surface of the center of the turn table T in a hemispherical shape, the guide hole 11 is formed in the center in communication with the guide hole 11 in the longitudinal direction. A hemispherical guide boss 10 having a predetermined depth of 12 and 13; The hemispherical guide boss 10 is installed to be slidable up and down along an inner surface, and an inverted triangular pressure plate 21 is provided at a lower portion thereof, and a pressure rod 22 is extended on a center upper surface of the pressure plate 21. Pressing table 20; A clamper (30) installed on the left and right guide grooves (12, 13) and slidingly moved toward the turn table (T) by pressing the pressing plate (21) of the pressing table (20); A spring 31 for elastically supporting the clamper 30 in a direction opposite to the pressing direction of the pressing table 20; And a stopper 40 formed to extend parallel to each other from an upper surface of the hemispherical guide boss 10 around the guide hole 11 to limit an upper feed amount of the pressing table 20. Disc flapping device for disc players. The method of claim 1, Disk clamping of the optical disc player provided with a spring S for elastically supporting the pressing table 20 upward between the lower surface of the pressing plate 21 of the pressing table 20 and the upper surface of the turn table T. Device. The method of claim 1, Bottom surfaces of the left and right guide grooves 12 and 13 of the hemispherical guide boss 10 provided with the clamping 30 form inclined surfaces 12a and 13a of a predetermined curvature, and the lower surface of the clamper 30 is left And a disk clamping device for an optical disk player which forms an inclined surface 30a having the same curvature as the inclined surfaces 12a and 13a of the right guide grooves 12 and 13.