KR950005962B1 - Tilting apparatus for double side player of optical disk - Google Patents

Abstract

The tray of an optical disk player is shaken with the help of a U-type rack and a loading motor so that slanting of a disk is corrected. The apparatus includes a turn table for rotating a disk, a pick-up carrier (51) for reading data recorded in a disk, U-type racks (21,22) for guiding the pick-up carrier (51), a turning base (24) having a guide shaft (23) for guiding the pick-up carrier (51) horizontally, a tilter for coupling the turning base with the main base, a deviation adjuster for moving the guide shaft right to reft and vice versa.

Description

Tilting device for double-sided playing optical disc player

1 is a configuration diagram of a conventional optical disc player.

2 is a pickup installation state of a conventional optical disc player.

3 is a block diagram of a carrier equipped with a conventional pickup.

4 is a general pickup driving state according to the deflection of the conventional disk.

5 is an internal plan view showing a configuration of the present invention.

6 is a front view illustrating the reproduction state of the present invention.

7 is a rear view showing a pickup carrier turning state of the present invention.

8 is a configuration diagram of a pickup carrier of the present invention.

9 is another exemplary embodiment in which the hinge position of the present invention is changed.

10 is an operating state provided with a lifting device in the pickup of the present invention.

Figure 11 is an operating state with a tilting device in the pickup of the present invention.

* Explanation of symbols for main parts of the drawings

10: disc 11: main base

12: spindle motor 13: turntable

21, 22: U-shaped rack 23: guide shaft

24: turning base 25: holder

31: hinge 41: cam gear

42: cam 51: pickup carrier

52: pickup 61: deviation adjustment bracket

63: adjusting bolt 73: power switch

The present invention relates to a tilting apparatus of a double-sided playing optical disc player, and the U-shaped rack for guiding the driving of the pickup carrier is hinged to the main plate to swing, and then swings about the hinge axis by the driving of the loading motor. It is to compensate for sag.

In general, a conventional optical disc player includes a spindle motor 2 for driving an optical disc 10 mounted on a turntable 1 at a constant speed, as shown in FIGS. 1 and 2 of the accompanying drawings, and on an optical disc. The carrier 5 can be rotated along the pair of guide members 3 and 4 to reproduce the recorded signal, the pickup means 6 provided in the carrier, and the carrier can be rotated for reproduction on the opposite side of the disc recording surface. It is provided with a turning means (7) having a circular fixed gear (8) and a moving guide member (9). In addition, the carrier 5 is provided with three motors including pickup means 6 for reproducing signals recorded on the optical disc, and various parts for driving the motors. The three motors mounted in the carrier 5 are sliding motors 5c for simultaneously transmitting power to the horizontal movement gear 5a and the turning gear 5b of the carrier 5, as shown in FIG. And an inclination correcting motor 5d for correcting the degree of inclination of the pickup means 6 that sags when the disc is rotated, and an end of the disc on which one side of the disc is struck when the carrier 5 turns to the opposite side of the disc. And a height adjustment motor 5e for additionally correcting a height that is not sufficiently compensated by the tilt angle correction motor 5d when the inclination angle of the disk is large, while preventing the phenomenon of bumping, and the tilt angle correction motor 5d. ) Allows the pickup means 6 fixed to the first case 6b to maintain the left and right inclination angles with the pins 6c and 6d protruding from both ends of the case as the hinge points, and the height adjustment motor 5e. ) Is the pickup means (6) by the first moving member (6e) To allow for height adjustment.

Meanwhile, the pickup means 6 installed on the carrier 5 is formed along the horizontal movable gear 5a and the pair of guide members 3 and 4 driven by the power of the sliding motor 5c. The interlocking drive of the racks 3a and 4a reads signals recorded on the surface of the disk while moving at a constant speed from the inner circumference to the outer circumference of the disk 10. In order to obtain a stable signal, the recording surface of the disk 10 is read. In accordance with the movement of the optical pick-up means 6 along, the adjustment operation for obtaining the orthogonal state between the movement trajectory extension line of the irradiation light optical axis and the disk rotation center should be performed quickly. In other words, the disk 10 placed on the turntable 1 permits a change of +0.9 and -1.2 mm at the end of the disk in the rotating state, and +1.5 and -2.5 mm in the stopped state. Since the state of the disc 10 is sag, the objective lens 6a of the pickup means 6 should always be parallel to the disc.

As shown in FIG. 4, the carrier 5 on which the pickup means 6 is mounted is fixed to the guide members 3 and 4, and the pickup means 6 itself is fixed by the inclination angle correction motor 5d. It should be able to incline, and the height adjustment of the pickup means by the height adjustment motor 5e is made possible in case there is a considerable amount of deflection. In other words, the "A" state in FIG. 4 is a position for reproducing the inside of the disc 10, and the objective lens 6a of the pickup means 6 can maintain the neutral and can be reproduced without adjusting the inclination angle and height. As the carrier 5 gradually moves outward from the disk, the pick-up means 6 in which the carrier 5 is fixed to the hinge pins 6c and 6d in the " B " position is inclined without height adjustment. Only the correction is performed and the objective lens 6a is inclined as the inclination corresponding to the deflection angle of the disc 10 to detect and reproduce the correct focus. At this time, the objective lens 6a also moves finely by +1.7 mm.

Subsequently, when it reaches the "C" position, the objective lens 6a has the hinge pins 6c and 6d of the pickup means 6 so as to maintain a constant distance from the disk 10. 5f) is adjusted along with the descending height and at the same time the inclination angle correction is made so as not to affect the signal reproduction, and if the disc through this process (10a) after the disc is rotated upward for the disc top surface (10b) playback When it reaches the "D" position, the objective lens 6a is completely inserted into the carrier 5 by using the height adjusting motor 5e so that the objective lens 6a does not come into contact with the end of the disc during turning.

However, such a conventional pickup driving apparatus is provided with various driving motors 5c, 5d, and 5e in a form in which the carrier 5 is combined, and its structural assembly is also very complicated. In addition to acting as a large obstacle that delays the moving speed and the search time due to the increase in the weight of the carrier itself, a significant problem that greatly reduces the reliability of operation due to the complexity of the motor drive system is pointed out.

In addition, the above-described conventional configuration includes a spindle motor, a lift motor, and a tilting motor in the pickup carrier, which not only puts a large load on the motor during turning operation but also consumes a lot of current, and complicatedly configures a tilting mechanism in the pickup carrier. As it reduces the reliability of the product, and because the overall weight is large, the inertia force is large, so it is cumbersome to control during regeneration operation, and the loading motor for tray transfer is not used at all except the tray transfer operation. It was a lot of reality.

The present invention allows the U-shaped rack for guiding the driving of the pickup carrier to be hinged to the main plate in order to oscillate around the hinge axis by the driving of the loading motor to compensate for the deflection of the disk. At the same time, the guide shaft installed on the turning base provided with the U-shaped rack is operated left and right to correct the deviation of the center, thereby reducing the weight of the pickup carrier and simplifying the overall structure.

The present invention for achieving the above object is a turntable, which is fixed to a spindle motor mounted on the main base to rotate a disk, a pickup carrier equipped with a pickup for reading a record of the disk mounted on the turntable, and a transfer operation of the pickup carrier. A turning base provided with a pair of U-shaped racks for guiding the guide, a guide shaft for mounting the rack and guiding the horizontal movement of the pick-up carrier, and a tilting means configured to hinge by swinging the turning base to the main base; It is composed of the deviation adjusting means for horizontal operation of the shaft.

Referring to the configuration of the present invention in more detail based on the accompanying drawings as follows.

As shown in FIGS. 5 and 6, a pair of U-shaped records of the rotating disk 10 mounted on the turntable 13 mounted on the spindle motor 12 mounted on the main base 11 is rotated. In order that the pickup 52 installed in the pickup carrier 51 moving along the racks 21 and 22 is read and reproduced, the racks 21 and 22 are mounted and the pickup carrier 51 during the regeneration operation. The turning base 24 installed with the guide shaft 23 to guide the horizontal movement of the hinge to the main base 11 constitutes a tilting means to swing.

Here, the tilting means may include a turning base 24 provided with a U-shaped rack 21, 22, and a guide shaft 23 for guiding the transfer operation of the pickup carrier 51, on which the spindle motor 12 is mounted. The guide protrusion 24a coupled to the base 11 by the hinge 31 and formed at the tip of the turning base 24 is mounted to a loading motor (not shown) for mounting the disk 10 to the turntable 13. It is guided to the cam 42 of the cam gear 41 driven by the configuration so as to tilt and lift the pickup (52).

Here, the hinge 31 for installing the turning base 24 on the main base 11 is installed in front of the spindle motor 12 in which the turntable 13 is condensed, but the hinge 31 as shown in FIG. ) May be installed behind the spindle motor 12 on which the turntable 13 is condensed.

In addition, the tilting means may include a means for lifting the pickup 52 by installing a lifting motor on the pickup carrier 51 as shown in FIG. 10 of the accompanying drawings, by means of the cam gear 41 around the hinge 31. The pick-up carrier 51 is tilted at the swinging U-shaped racks 21, 22 and the turning base 24, and at the same time, the pick-up 52 is lifted so that the more accurate tilting is performed. As shown in FIG. 11, the pick-up carrier 51 is tilted by the turning base 24 swinging by the cam gear 41 around the hinge 31 by installing a tilt motor on the pick-up carrier 51. The tilting operation of 51 was performed to achieve a more accurate tilting operation.

In addition, the above-described configuration includes deviation adjusting means for horizontally operating the guide shaft 23 for guiding the sliding operation of the pickup carrier 51 to the horizontal direction so that the center line of the turntable 10 coincides with the transfer center line of the pickup 52. As shown in FIGS. 5 and 8 of the accompanying drawings, the above-described deviation-adjusting means has an upper side to which the U-shaped racks 21 and 22 are coupled to guide the slide operation of the pickup carrier 51. The tip of each guide shaft 23 installed at the lower and lower turning base 24 with the holder 25, and after coupling the guide hole 61a to the guide protrusion 24b of the turning base 24, the spring A bias adjustment bracket 61 was installed to be adjusted to the adjustment bolt 63 so as to be carried out at 62, and then the rear end of the guide shaft 23 was combined.

Referring to the effects of the present invention configured as described above according to the configuration as follows.

First, the plate 27 is installed on both the left and right sides by integrating a pair of U-shaped racks 21 and 22 having the rack gears formed in all the sections and the rack gears formed only in the turning section. To prevent distortion and reinforce the strength, then screw the turning plate 24 on the upper and lower sides.

In this way, the guide shaft 23 is provided as the holder 25 and the deviation adjusting bracket 61 in each turning base 24 integrally coupled to the upper and lower sides of the U-shaped racks 21 and 22. Here, the guide shaft 23 is coupled to the holder 25 so that the left and right flows at the same time, and the rear end is coupled to the deviation adjustment bracket 61, and the deviation adjustment bracket 61 is connected to the turning base 24. The guide hole 61a is coupled to the embossed protruding guide protrusion 24b and is supported by the spring 62 and horizontally slides the guide shaft 23 with the adjusting bolt 63 to pick up 52. Fine tune the center of movement. In addition, the switches 71 and 72 are fastened to the guide shaft 23.

The pick-up carrier 51 provided with the pickup 52 on the U-shaped racks 21 and 22 is installed to be transported along the U-shaped racks 21 and 22, and then the turntable 13 is compressed. The turning base 24 is coupled to the hinge 31 by the main base 11 on which the spindle motor 12 is mounted.

Such a configuration is that if the disk 10 is mounted on the turntable 13 by a loading device (not shown in the figure), the pickup carrier 5 is moved along the U-shaped racks 21 and 22 while the disk 10 is mounted. Play the record. Furthermore, the present invention secures the deck by fixing the rear end of the lever of the power switch 73 with the set screw from the outside so that the main base 11 and the turning base 24 do not flow through the spring force 81 during the movement of the set. . Therefore, when screwing the rear end of the power switch 73, the power can not be turned on, so there is no fear that the deck is operated and deformed during installation or transportation. In addition, the pickup carrier 51 of the present invention allows the pinion 54 to be synchronized to both sides so that the pinion 54 is horizontally moved and turned on the U-shaped rack 21 and the pinion 54 is installed on the pickup carrier 51. It is operated by the motor 53.

In the present invention described above, when the disk 10 is seated on the turntable 13 by a tray, which is a separate loading device (not shown), the slide motor 53 installed on the pickup carrier 51 is operated while receiving a playback signal. The on 54 is driven so that the pickup carrier 51 is guided to the guide shaft 23 while moving horizontally from the position of the switch 72 to start playback of the recording of the disc 10. At this time, the guide shaft 23 is adjusted in advance so that the center line of the turntable 13 and the moving center line of the pickup 52 coincide with each other. The loading motor for operating the carrier is engaged with the cam gear 41 to turn the turning base 24. To operate.

When the deflection of the disk 10 occurs in the above state, the loading motor is operated to rotate the cam gear 41 to turn the turning base 24 to guide the guide protrusion 24a to the cam 42 of the cam gear 41. The left and right swings to compensate for the deflection amount of the disk 10. In addition, a separate lifting device or tilting device may be further attached to the pickup carrier having the above configuration to achieve a more accurate tilting operation.

As described above, the present invention has a simple configuration of the pickup carrier by using a tilt and lift operation of the pickup using external power without its own power, and since only the slide light motor is mounted on the pickup carrier, the total weight is reduced, turning and searching The operation is quick and of course, the cost savings are realized by using the existing loading motor without constructing a separate power unit, and there is no fear that the operating parts such as the deck may be damaged due to the malfunction by fixing the power switch with a fixing screw during transportation. The centerline of the turntable and the center of movement of the pick-up can be easily adjusted, making it easy to use and improving the reliability of the product through smooth turning.

Claims (7)

A turntable fitted to the spindle motor mounted on the main base to rotate the disc, a pickup carrier equipped with a pickup for reading a record of the disc mounted on the turntable, a pair of U-shaped racks for guiding the transfer operation of the pickup carrier, A turning base on which the rack is installed and a guide shaft for guiding the horizontal movement of the pickup carrier, tilting means for hinge coupling the turning base to the main base, and a deviation adjustment for horizontally operating the guide shaft left and right. A tilting device for an optical disc player for playing on both sides, characterized by comprising means. The guide of claim 1, wherein the tilting means hinge-couples the turning base provided with the U-shaped rack and the guide shaft to guide the transfer operation of the pickup carrier to the main base on which the spindle motor is mounted, and formed at the tip of the turning base. A tilting device of a double-sided playing optical disc player, characterized in that the projection is guided to a cam of a cam gear driven by a loading motor for mounting the disc on a turntable to perform a tilt and lift operation of the pickup. The guide shaft according to claim 1, wherein the deviation adjusting means comprises: a guide shaft having a tip hinged to a turning base on which a U-shaped rack is mounted to guide a slide operation of the pickup carrier, and coupled to the rear end of the guide shaft and supported by a spring; Optical disc player for double-sided playing, characterized in that it consists of a deviation adjustment bracket that slides to the adjustment bolt by combining the guide hole to the guide guide of the base. The tilting apparatus for a double-sided playing optical disc player according to claim 1, further comprising a lift means for installing a lifting motor on the pickup carrier to lift the pickup. The tilting apparatus of claim 1 or 2, further comprising tilting means for tilting the pickup by installing a tilt motor in the pickup carrier. The tilting apparatus of claim 2, wherein a hinge for installing the turning base on the main base is installed in front of the spindle motor on which the turntable is condensed. 3. The tilting device of claim 2, wherein a hinge for installing the turning base on the main base is installed at the rear of the spindle motor on which the turntable is condensed.