KR19980017227A - Optical disc player - Google Patents

Abstract

The present invention discloses an optical disc player.

In a typical optical disc player, in transferring an optical disc, the optical disc has been conveyed through the frictional force between the front plate and the long guide roller. However, in the transfer process of the optical disk through such a frictional force is caused surface damage of the optical disk, in particular, there is a problem that the chucking operation is not made stable by external impact.

In order to solve this problem, the present invention minimizes surface damage by transferring only the rear side surfaces of the optical disk to the disk holder in a state of being pressed and supported. In particular, the chucking operation is carried out in a state of being pressed and supported by the disk holder. The chucking operation was made to be stable even by the impact from the.

Description

Optical disc player

1 is a plan view conceptually showing a typical optical disc player.

2 is a plan view conceptually showing the optical disc player according to the present invention;

3 is a front view of FIG. 2;

4 and 5 are a plan view and a front view when the optical disk transfer is completed.

6 is a plan view showing a state during play driving;

＊ Explanation of symbols for main parts of drawing *

10; main chassis 11; guide groove

20; driving unit 21; turn table

30; disc holders 31 and 32; upper and lower support plates

40; transfer means 41; guide boss

42; feed screw 43; guider

50; pressure release means 51, 52, 53: first, second, third switch

60; pickup unit G; gear group

B; bearing

TECHNICAL FIELD The present invention relates to an optical disk player, and more particularly to an improved optical disk player for stably transporting an optical disk.

In general, optical disks are relatively high density recording and reproducing and semi-permanent storage, compared to magnetic recording tapes and LPs, and optical disk players using them have been widely used in recent years.

Such optical disc players include a laser disk player and a compact disk player. Among such optical disk players, a compact disk player which is small in size and portable (hereinafter referred to as CDP) Abbreviation) is the most common.

In other words, the CDP has been proposed as a separate player, ie, portable or combined with an audio system, or in recent years, has been proposed as an automobile CDP in accordance with the trend of luxury vehicles.

Figure 1 shows such a general optical disc player.

This, the drive motor (M) is located on the inner surface of the main chassis 1, a plurality of gear groups (G) rotated by the drive motor (M) is located on one side of the front. At this time, one end of the rotating shaft 2 rotatably supported by the main chassis 1 of the other end of the gear g on the side corresponding to the gear g is press-fitted. That is, the rotation shaft 2 is rotationally driven by the gear g.

Further, on the outer circumferential surface of the rotary shaft 2, an elongated guide roller 3 which is interlocked and rotated by the rotation of the rotary shaft 2 is inserted.

Meanwhile, the upper surface of the main chassis 1 is in contact with and presses the upper surface of the optical disk D guided by the guide roller 3, thereby guiding the optical disk D together with the guide roller 3. The front top plate 4 for generating the pressing force is provided.

In addition, a chucking plate 5 is positioned above the rear surface of the main chassis 1 to receive the power from the driving motor M and chuck the optical disk D rotated at a predetermined angle and seated on the turn table. .

The optical disk player configured as described above, when the optical disk (D) is inserted from the front of the main chassis (1), the guide is rotated by receiving the power from the drive motor (M) through a plurality of gear groups (G) The optical disk D is guided by the pressing force between the roller 3 and the front top plate 4 to be seated on the turn table and simultaneously chucked by the chucking plate 5 to be driven to rotate together with the turn table, not shown. It is recorded / played back by the Pick-up Unit.

However, in such an optical disk flare, friction damage is applied to the entire surface of the optical disk D in the process of sliding the optical disk by the contact between the guide roller 3 and the front top plate 4. As a matter of course, the recording surface is severely damaged, causing a problem that the optical disc D must be discarded. In addition, since the optical disk D is seated on the turntable and chucked by the chucking plate 5, there is no means for firmly supporting the optical disk D, thereby causing a problem that the correct chucking operation cannot be performed when an external shock is applied. do.

The present invention has been made to solve such a conventional problem, and it is possible to prevent surface damage generated during the transfer process of the optical disk, and in particular to provide an optical disk player capable of stably performing the chucking operation. There is this.

In order to achieve the above object, an optical disk player according to the present invention includes a main chassis having a guide groove cut along an insertion direction of an optical disk on one side thereof; A driving unit located in the main chassis and provided with a driving motor and a turn table rotated by the driving motor; A disk holder for pressing and supporting both rear surfaces of the optical disk; Conveying means for slidingly conveying the disk holder into and out of the main chassis; And a pressing force release means for releasing the pressing force of the optical disc by the disc holder while the optical disc transferred by the transfer means is chucked to the turn table by the chucking operation of the driving unit and the clamper. It is characterized by.

One preferred feature of the present invention is that the upper and lower support plates to which the optical disk can be inserted are respectively provided on both sides of the front surface of the disk holder so as to be pressed against both sides of the rear surface of the optical disk.

Another preferred feature of the present invention, the transfer means, the guide boss is formed extending from one side of the disk holder slidably inserted into the guide groove of the main chassis; A transfer screw formed to extend in parallel with the guide groove of the main chassis with respect to the turn table, and a rear end thereof bearing supported to be idle in the main chassis; A guider extending from the lower side of the other side of the disc holder and fastened to the transfer screw; It is provided on the inner surface of the main chassis, a plurality of gear group for rotating the drive by rotating the drive screw;

Another preferred feature of the present invention, the pressing force release means is provided on one side of the rear of the main chassis, when the optical disk is located in the center of the turn table to be brought into contact with one side of the disk holder to transfer the disk holder A first switch to stop; A second switch located above the driving unit and contacting the upper surface of the driving unit to further transport the disc holder to the rear when the optical disk is chucked on the turn table; And a third switch located at a rear surface of the main chassis to contact the rear surface of the disk holder to limit a final transfer distance of the disk holder.

The present invention is to support the both sides of the rear surface of the optical disk through the disk holder to be conveyed toward the turntable, it is possible to prevent the surface damage of the optical disk due to frictional contact, in particular the chucking operation of the disk holder By being made in the state of supporting the optical disk through, the chucking operation can be performed stably even when an impact from the outside is applied.

Hereinafter, a preferred embodiment of an optical disc player according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a plan view conceptually showing an optical disc player according to the present invention, and FIG. 3 is a front view of FIG. 4 and 5 are a plan view and a front view when the optical disk transfer is completed, and FIG. 6 is a plan view showing a state during play driving.

As shown therein, the optical disc player according to the present invention includes a main chassis 10 having a guide groove 11 cut in a large direction along an insertion direction of the optical disc D, a driving motor m, It is roughly divided into a driving unit 20 having a turn table 21 rotated by a disk holder 30, a disk holder 30, a conveying means 40, and a pressing force release means 50.

The disk holder 30 described above is configured to pressurize and support both rear sides of the optical disc D. As shown in FIG. 3, the rear holder both sides of the optical disc D may be inserted into and inserted into both front sides thereof. Lower support plates 31 and 32 are respectively provided. At this time, the ends of each of the upper and lower support plates 31 and 32 are bent to open outward to facilitate the insertion of the optical disk D.

The conveying means 40 is for sliding conveying the disk holder 30 to the inside and the outside of the main chassis 10. Looking at the detailed structure, the guide boss 41 is formed from one side of the disk holder 30. The guide boss 41 is formed to be extended so that the guide boss 41 is slidably inserted into the guide groove 11 formed on the main chassis 10. In addition, the upper end portion is provided with a washer (W) so as to prevent the departure from the lower side. And the transfer screw 42 is located on one side of the main chassis 10, the transfer screw 42 is arranged to be parallel to the guide groove 11 of the main chassis 10 around the turn table 21. Is installed. In addition, the rear end of the transfer screw 42 is supported by a bearing (B) to be able to idle on the rear of the main chassis (10). At this time, the guider 43 integrally extended from the disc holder 30 is fastened on the transfer screw 42.

On the other hand, the drive screw (42) to substantially drive the rotation of the disk holder 30 coupled to the rotation drive, the drive motor (M) is located on the inner surface of the main chassis 10, the drive motor ( A plurality of gear groups G which are rotated and driven by receiving power from M) is provided, and the final gear g of the gear groups G rotates the feed screw 52.

The pressing force release means 50 is a disk holder such that the optical disk D can be rotated while the optical disk D is chucked on the turn table 21 through the driving unit 20, the clamper 22, or the like. Provided for releasing from the pressure-supported state by 30, they are roughly classified into first, second, and third switches 51, 52, and 53.

The first switch 51 is provided to stop the transfer of the disk holder 30 when the optical disk D is located at the center of the turn table 21, and one side of the main chassis 10 is provided. When provided in contact with the side of the disk holder 30 temporarily stops the operation of the drive motor (M) in connection with the microcomputer not shown.

The second switch 52 is located above the driving unit 20, and is in contact with the top surface of the driving unit 20 at the time when the optical disk D is chucked on the turn table 21. By reactivating the drive motor (M) through the micom serves to transfer the temporarily stopped disk holder 30 to the rear side.

The third switch 53 is released in a state in which the optical disk D, which is supported by the upper and lower support plates 31 and 32, is pressed by the disk holder 30 being moved backward by the second switch 52. At this point it serves to stop the transfer of the disk holder 30 completely. That is, the third switch 53 is provided on the rear side of the main chassis 10 and is in contact with the rear side of the disc holder 30 when the disc holder 30 is further conveyed to the rear side and at the same time the driving motor through the microcomputer. It is to stop M).

Reference numeral 60 is a pickup unit which is slidably transported in the radial direction of the optical disc D to perform recording / reproducing from the optical disc D. FIG.

The operation of the optical disk player of the present invention configured as described above will be described with reference to the accompanying drawings.

First, as shown in FIG. 2, the both sides of the rear side of the optical disc D are inserted and inserted into the upper and lower support plates 31 and 32 provided on both sides of the front surface of the disc holder 30, and then the driving motor M is operated. When the plurality of gear groups G are driven to rotate, the feed screw 42 is driven to rotate by the final gear g of the gear groups G. As shown in FIG. At this time, the guide screw 43 integrally extended from the lower side of the disc holder 30 is fastened to the transfer screw 42. As a result, the disc holder 30 extends from the upper side of the disc holder 30. Through the guide boss 41 slidably inserted into the guide groove 11 is to be transported into the main chassis 10.

In this case, as shown in FIG. 4, when the optical disk D is transferred through the disk holder 30 and positioned at the center of the turn table 21, the first switch 51 is disposed on one side of the disk holder 30. And the drive motor M is stopped in the drawing, so that the disc holder 30 temporarily stops its transfer.

In this state, the driving unit 20 is raised by the usual tilting means, the clamper 22 is lowered, and the operation of chucking the optical disk D on the turn table 21 is performed. At this time, when the chucking is completed, the upper surface of the driving unit 20 comes into contact with the second switch 52 as shown in FIG. 5, and at the same time, the drive motor M is driven again through a microcomputer to temporarily stop the disk. The holder 30 continues to advance backwards. When the disk holder 30 is further transported to the rear as described above, as shown in FIG. 6, the optical disk D, which is pressed and supported by the upper and lower support plates 31 and 32 of the disk holder 30, is pressurized. Is released from the state and becomes rotatable. In addition, when the optical disk D is released from the pressing force, the rear surface of the disk holder 30 is in contact with the third switch 53, whereby the operation of the driving motor M is stopped, resulting in the disk holder 30. ) Will no longer be transported. Therefore, while driving the turntable 21 and the optical disk (D) seated thereon through the drive motor (m), and while slidingly transporting the pickup unit 60 shown in phantom in the radial direction of the optical disk (D) Recording / playback is performed.

On the other hand, the process of drawing out the optical disk (D) in this state is made by the transfer process and the reverse operation.

That is, while the disk holder 30 is moved forward by the driving motor M, both rear side surfaces of the optical disk D, which are chucked on the upper and lower support plates 31 and 32, are inserted and inserted into the disk. The transfer of the disc holder 30 is stopped by the operation of the switch 51. Then, as the driving unit 20 and the clamper 22 return to their initial positions, the second switch 52 which has been in contact with the driving unit 20 is released therefrom to operate the driving motor M to operate the disc holder 30. ) To the front. Therefore, the optical disk D is drawn out in the state shown in FIG. 2, and the worker (consumer) takes out the drawn optical disk D from the disk holder 30.

As described above, according to the optical disc player according to the present invention, only the both sides of the rear surface of the optical disc is pressed against the disc holder, and thus the surface damage of the optical disc is easily prevented during the transfer process. Since the optical disk is supported by the optical disk, the chucking operation can be stably performed even when an external shock is applied. Therefore, there is an effect that can improve the reliability of the product by that much.

Claims (4)

A main chassis 10 in which a guide groove 11 is cut along the insertion direction of the optical disk D on one side thereof; A driving unit 20 located in the main chassis 10 and provided with a driving motor m and a turn table 21 rotated by the driving motor m; A disk holder 30 for pressing and supporting both rear surfaces of the optical disk D; Conveying means (40) for slidingly conveying the disk holder (30) to the inside and outside of the main chassis (10); The optical disk D transferred by the conveying means 40 to the disk holder 30 in a state where the chucking operation of the driving unit 20 and the clamper 22 is chucked to the turn table 21. And a pressing force release means (50) for releasing the pressing force of the optical disc (D). The method of claim 1, Optical disk players are provided with upper and lower support plates 31 and 32, respectively, on which both sides of the optical disk D may be inserted so as to press and support both rear surfaces of the optical disk D. . The method of claim 1, The conveying means 40 may include: a guide boss 41 extending from one side of the disc holder 30 to be slidably inserted into the guide groove 11 of the main chassis 10; The transfer screw is formed to extend parallel to each other with the guide groove 11 of the main chassis 10 around the turn table 21, the rear end of which is supported by the bearing (B) in the main chassis 10 so as to be idling ( 42); A guider (43) extending from the lower side of the other side of the disc holder (30) and fastened to the transfer screw (42); And a plurality of gear groups (G) provided on an inner surface of the main chassis (10) and driven to rotate by a driving motor (M) to rotate the transfer screw (30). The method of claim 1, The pressing force release means 50 is provided on one side of the rear surface of the main chassis 10 so that the optical disk D is in contact with one side surface of the disk holder 30 when the optical disk D is located at the center of the turn table 21. A first switch (51) for stopping the transfer of the disc holder (30); Located on the upper side of the driving unit 20, when the optical disk (D) is chucked on the turn table 21 is in contact with the upper surface of the driving unit 20 to further transport the disk holder 30 to the rear A second switch 52; And a third switch (53) positioned at a rear surface of the main chassis (10) to contact the rear surface of the disk holder (30) to limit a final transfer distance of the disk holder (30).