KR950005032B1 - Pick-up apparatus for cdp of double side - Google Patents

Abstract

Pickup module(51) reads data recorded on disk established and rotated in the turn table(11). Pickup(52) is established at center of the pickup module(51), clamper is established at one side of the module, and a pair of guiding rollers are established at the other side of the module. Pickup in the pickup module(51) is moved by a belt movement device and the pickup module can only be moved by U-turn.

Description

Pickup transfer device for double-sided playing optical disc player

1 is a side view showing the structure of a conventional optical disc player.

2 is a front view showing a pickup configuration of a conventional optical disc player.

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

4 is a plan view showing the overall configuration of the present invention.

5 is a front view showing the configuration of the conveying means of the present invention.

6 is a configuration diagram of the guide means of the present invention.

7 is a block diagram of a transmission means of the present invention.

8 is another configuration of the turning plate used in the present invention.

9 is a configuration and operation state diagram as a transmission means of the present invention,

(a) is a state diagram of gear shift engagement when sliding at low speed.

(b) is a state diagram of shift fork when sliding at low speed.

(c) is a state diagram of gear shift engagement when turning at high speed;

(d) shows the state of the shift fork during turning at high speed.

Figure 10 is an exemplary embodiment according to the conveyance belt constituting the conveying means of the present foot.

* Explanation of symbols for main parts of the drawings

11: turntable 21, 61: bracket

22, 22a, 22b: guide roller 23: turning plate

24, 24a: Upper idle roller 25, 25a: Lower idle roller

26, 26a: conveying belt 31: conveying motor

34a, 34b: reduction gear 41: transmission gear

42: loading plate 43: lever

44: fork 51: pickup module

52: pickup 53: clamper

54: guide roller 62: sprocket

The present invention relates to a pickup moving device of a double-sided performance optical disc player used to continuously reproduce the signals recorded on both sides of the disc of the double-sided performance optical disc player, in particular by a separate transfer means that is rotated by the drive of the motor mounted on the bracket By constructing a unique pickup module sliding and turning device so that only the pick-up module is moved U-turn, it improves the assembly and reduces the manufacturing cost by reducing the required parts, accelerates the turning speed and realizes synchronization, thus improving the reliability of the product. It is an improvement.

2. Description of the Related Art Generally, a conventional optical disc player includes a spindle motor 2 for constituting an optical disc 10 mounted on a turntable 1 at a constant speed, as shown in FIGS. 1 and 2, and on an optical disc. A carriage 5 moving along a pair of guide members 3 and 4 for reproducing the recorded signal, a pickup means 6 provided in the carriage, and a turning to rotate the carriage to reproduce the opposite side of the disc recording surface. Means 7 are provided.

The carriage 5 is also equipped with three motors including pickup means 6 for reproducing signals recorded on the optical disc, and various components for driving the motors.

The three motors mounted in the carriage 5 are sliding motors 5c for simultaneously transmitting power to the horizontal movement gear 5a and the turning gear 5b of the carriage 5, as shown in FIG. ), An inclination correcting motor 5d for correcting the degree of inclination of the pickup means 6 due to deflection when the disc is rotated, and the edge of the disc on which one side of the disc is struck when the carriage 5 turns to the opposite side of the disc. It is configured as a height adjustment motor 5e for additionally compensating for a height that is not sufficiently compensated by the tilt angle correction motor 5d when the disc tilts at the same time while preventing the phenomenon of hitting the end. The tilt angle correction motor 5d allows the pickup means 6 fixed to the first case 6d 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 picked up by the first moving member 6e. It is to enable height adjustment of (6).

The carriage 5 configured as described above includes racks 3a and 4a formed along the horizontal movable gear 5a driven by the power of the sliding motor 5c and the pair of guide members 3 and 4. By virtue of the engagement driving of the disc), the signal recorded on the surface of the disc is read while moving at a constant speed from the inner periphery of the disc 10 to the outer periphery.

At this time, the carriage (5), which performs accurate horizontal movement along the upper and lower pairs of guide members (3) and (4), first reproduces the bottom surface of the double-sided optical disk 10, and then turns to regenerate the upper surface. In the sliding motor 5c having the 5a, the turning gear 5b is simultaneously rotating so that the turning gear 5b is engaged with and moved along the inner surface of the circular fixed gear 8 so as to move the carriage (5c). 5) will be a natural twisting motion.

That is, after reproducing the signal recorded on the bottom surface of the disk 10 while moving along the lower guide member 4, the carriage 5 is released from the lower guide member 4, and then the circular fixed gear 8 Is coupled to the movement guide member (9) that is to be addressed to lead to the operation to turn upward.

However, such a conventional optical disc player is provided in a form in which various driving motors 5c, 5d, and 5e are combined in the carriage 5, and its structural assembly is also very complicated. Due to the increase in speed, it is acting as a big obstacle to shorten the movement speed and search time.

In addition, even when the carriage 5 equipped with the pickup means 6 is turned up and down for reproducing both sides of the disc 10, the carriage 5 is completely out of the disc 10. Since the turning is performed at the end, a lot of difficulties are involved in miniaturizing the device, such as a separate moving space required for turning the carriage, in addition to the disk installation space, and the turning means 5 is turned upside down when turning, so that the pickup means 6 The closed end of twisting the flexible wire for transmitting the read signal to the main body is generated.

In addition, three motors, a slide motor, a tilt servo motor and a height servo motor, are used to move the pickup to a carriage equipped with a pickup module. When searching or turning, the load on the motor is large and the moving speed is slow, so it takes a lot of time to select the recording. Since the volume must be turned off completely, the overall volume increases due to securing a large space and the flexible wire is twisted and broken.

The present invention has been made in view of the above-described conventional defects, the transfer operation of the pickup for reproducing the signal recorded on the surface of the optical disk by the conveying means by the belt so that only the pick-up module is moved U-turn, the fast turning operation The main purpose is to improve the reliability of the product by realizing the non-synchronization and simplifying the overall configuration to improve the assemblability and reduce the installation space.

The moving device according to the present invention for achieving the above object is a spindle for mounting and rotating the disk, a pickup module for reading the record of the disk mounted on the spindle, and one side of the pickup module coupled to the belt U-turn transfer Pickup module conveying means to be configured to be configured in parallel with the conveying means and guide means for guiding the transport of the pickup module.

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

The pickup module 51 which reads the record of the disk 10 mounted in the turntable 11 and reads the pivot 10 has a pickup 52 for reading the record of the disk 10 in the center of the upper surface as shown in FIG. The clamper 53 is installed on one side thereof, and a pair of guide rollers 54 are formed on the side opposite to the surface on which the clamper 53 is installed. Herein, the transfer means for sliding or u-turning the pickup module 51 will be described with reference to FIG.

The transfer means of the pickup module 51 is a U-shaped bracket 21 installed on one side of the pickup module 51, transmission means installed on the bracket 21 to drive the driving force of the motor 31, and the transmission means. In the center of the bent portion of the bracket 21 so as to be rotated by receiving power to the spinneret 23 is installed on the same axis as shown in FIG. The upper idler roller 24 installed at the tip of the bracket 21 on the top of the turning plate 23, the lower idler 25 installed at the tip of the bracket 21 on the bottom of the turning plate 23, and the turning plate ( 23) U-shaped wound on the upper idler roller 24 and the lower idler roller 25, the pickup module 51 is composed of a conveying belt 26 coupled to the clamper 53 by the driving of the turning plate 23. The pickup module 51 is moved u-turn to read the record of the disc 10.

And the transmission means is connected to the motor 31 and the electric belt 32, as shown in Figure 7 attached to the dual gear 33 consisting of two teeth with different outer diameters, and received from the motor 31 A reduction gear (34a) 34b for reducing the rotation speed, an idle gear (35) for connecting the reduction gear (34b) and the drive gear (23a) of the turning plate (23), and the double gear (33); It is provided between the reduction gears 34a and constitutes a shifting means for shifting the driving speed of the turning plate 23.

As shown in FIG. 9, the shifting means is provided with a sleeve 41b on the upper end of the large-speed low-speed electric gear 41a provided at the upper side, and has a small high-speed electric gear 41c at the lower side thereof. The transmission gear 41 which is integrally formed to be raised and lowered, and the lever 43 which is coupled to one end of the sleeve 41b and the other end of which is operated by the loading plate 42 are elevated. It consists of a fork 44 to make.

In addition, the conveying belt 26 used in the conveying means is composed of a wire or a timing belt, and the turning plate 23 or upper and lower idles wound so as to contact the friction protrusion of the conveying belt 26 made of the timing belt. The rollers 24 and 25 and the guide rollers 22 may also be configured as timing pulleys.

In addition, the guide means for guiding the pick-up module 51 of the present invention during the U-turn operation, as shown in Figure 6 of the accompanying drawings to form a guide rail (61a) in the U-shaped bracket (61) of the guide rail (61a) The bending plate 23 and the coaxial shaft 23b are fixed to each other to form a U-turn sprocket 62 which rotates.

According to the present invention having the above-described configuration, the disc 10 is mounted on the turntable 11 and the pickup module 51 moves to read the records recorded on both sides of the disc 10.

In this operation, first, when the driving force of the transfer motor 31 installed on the outside is transmitted to the double gear 33 by the electric belt 32, the transmission gear 41 is attached to (a) and (b) of FIG. Likewise, the power transmitted at a low speed is lowered through the reduction gears 34a and 34b, and then the driving plate 23 is driven by the idle gear 35 of the transfer belt 26 wound on the turning plate 23. The pickup module 51 mounted on the conveying belt 26 in a rotational manner slides to reproduce the recording recorded on the bottom surface of the disc 10.

In the above operation, the recording of the recording recorded on the bottom surface of the disk 10 is finished, and at the same time, the pickup module 51 makes a U-turn to move the recording recorded on the upper surface of the disk 10. The fork 44 coupled to operate along the long hole 43b formed at the other end of the lever 43 while the front end of the lever 43 pushes one end of the lever 43 to rotate about the pin 43a is rotated. As shown in (c) and (d) of FIG. 9, the transmission gear 41 is raised to become a high speed transmission state, and the u-turn operation is quickly moved.

When the U-turn operation of the pickup module 51 is completed by the above operation, the loading plate 42 retracts, and the lever 43 returns to the elastic force of the spring 45 so that the transmission gear 41 descends again and the low speed state is maintained. Then, the recording recorded on the upper surface of the disk 10 of the pickup module 51 is reproduced.

In performing the above operation, the guide means corresponds to the sprocket 62 in proportion to the friction projection of the timing belt, which is the transfer belt 26, so that the pick-up module 51 can be completely guided at any position during the turning operation. It was made to be out of sync.

Referring to the embodiment of the present invention described above in accordance with the configuration of the transport means as follows.

(Example 1)

As shown in FIG. 5, a turning plate 23 made of a timing pulley is installed at the center of the bent portion of the bracket 21, and the guide roller 22 having a large outer diameter is freely rotated on the same axis as the turning plate 23. As shown in FIG. The upper idle roller 24 and the lower idle roller 25 are installed at the tip of the bracket 21 on the top of the turning plate 23 and the tip of the bracket 21 on the bottom of the turning plate 23, and then the friction protrusion The conveying belt 26, which is a timing belt protruding from the outer edge, is wound around the turning plate 23 so as to be inscribed on the guide roller 22 and the upper and lower idle rollers 24 and 25 and installed on the conveying belt 26. The pick-up module 51 to slide and turn.

(Example 2)

As shown in (a) of FIG. 10, the bracket 21 is provided at the bent portion of the bracket 21 and constitutes a timing pulley, and the bracket 21 is arranged so that the upper edge of the outer edge of the turning plate 23 coincides with the lower edge of the outer edge. ) The upper idle roller 24 installed at the tip, the lower idle roller 25 installed at the tip of the bracket 21 so that the outer edge bottom line of the turning plate 23 and the upper end of the outer edge coincide with each other, and the rear of the turning plate 23. Two guide rollers 22a and 22b which are installed on the upper and lower sides of the upper idler roller 24 and the lower idler roller 25 so as to coincide with the lower liner, and friction protrusions are formed on the outer circumferential surface and are external to the turning plate 23. The upper idler roller 24 and the lower idler roller 25 and the two guide rollers 22a and 22b may be configured by a transfer belt 26 made of a timing belt wound in a U shape so as to be inscribed. 26) the pick-up module 51 is installed so that the U-turn is transported.

(Example 3)

As shown in (b) of FIG. 10, the turning plate 23 configured to be rotated by the driving of the motor 31 to the U-shaped bracket 21 installed on one side of the pickup module 51 and configured as a timing pulley, It is installed at the tip of the bracket 21 so that the top line of the turning plate 23 and the top of the outer edge and the upper idle roller 24a configured as a timing pulley, and the end of the bracket 21 so that the bottom line of the turning plate 23 and the bottom of the outer edge coincide. A plurality of guide rollers 22a installed and positioned to be located on the lower idle roller 25a formed of a tie-mill pulley, the lower idle line 24a of the upper idle roller 24a in front of the turning plate 23, and the upper idle line 25a of the lower idle roller 25a. ) 22b and a conveying belt 26a made of a timing belt having friction protrusions formed on the inner circumferential surface thereof, thereby turning the conveying belt 26a with the turning plate 23, the upper idle roller 24a, and the lower idle roller 24b. U-shaped so as to be inscribed and circumscribed to the guide rollers 22a and 22b. The take-up module 51 is installed in the transfer valve 26a to be wound in a mold so as to transfer the u-turn.

(Example 4)

As shown in (c) of FIG. 10, in the same configuration as in the third embodiment, the guide roller 22 has a single roller such that its outer diameter matches the upper line of the upper idle roller 24a and the upper idle line of the lower idle roller 25a. The pickup module 51 is configured to be transferred to a U-turn.

(Example 5)

As shown in (d) of FIG. 10, the guide rollers 22a are installed in close contact with the guide rollers 22a and 22b in the same configuration as in the third embodiment so as to be in close contact with the dolly plate 23 side. The conveying belt 26a guided by the 22b is in close contact with the turning plate 23 so that the pick-up module 51 is u-turned.

(Example 6)

As shown in (e) of FIG. 10, a turning plate 23 formed at a bent portion of the bracket and formed of a timing pulley, and a top end of the turning plate 23 and an outer edge of the turning plate 23 are installed at the tip of the bracket 21. The upper idle roller 24a constituted by the timing pulley, the lower idle roller 25a formed at the tip of the bracket 21 and the lower idle roller 25a constituted by the timing pulley so that the lower end line of the turning plate 23 coincides with the lower end of the outer edge, and the turn plate 23 Friction protrusions are formed on the inner circumference of the upper idle roller 24a and the lower idle roller 25a, and the guide roller 22 is circumscribed, and the transfer belt 26a, which is a timing belt, is wound in a U-shaped pickup module ( 51) to make a U-turn transfer.

According to the present invention, the pick-up module is lightened and the U-turn operation of the pick-up in a minimum space is achieved by separating the sliding motor and installing it in the external chassis and allowing only the pick-up module to move and turn by the transfer belt. As a result, the overall volume is small and there is no fear of twisting the flexible wire, and it is equipped with a transmission so that the turning operation of the pick-up module can be performed quickly, and the sprocket with the gear ratio coinciding on the same axis as the turning plate can be turned. It is a new and useful invention that not only realizes no synchronization but also has a simple configuration and is easy to assemble and maintain.

Claims (13)

A spindle for mounting and rotating a disk, a pickup module for reading a record of the disk mounted on the spindle, a pickup module transfer means for coupling one side of the pickup module to a belt for u-turn transfer, and parallel to the transfer means. Pick-up moving device of the two-sided playing optical disk player, characterized in that configured as a guide means for guiding the transfer of the pickup module. According to claim 1, wherein the pick-up module is configured to install a pickup for reading the disc record in the center of the upper surface, a clamper on one side, and a pair of guide rollers on the side opposite to the surface on which the clamper is installed Pick-up device of the optical disk player for playing on both sides characterized in that. According to claim 1, The transfer means, the U-shaped bracket installed on one side of the pickup module, the transmission means installed on the bracket for transmitting the driving force of the motor, the bent portion of the bracket to be rotated by receiving power to the transmission means A rotation plate installed at the center and having separate guide rollers having different diameters on the same axis, an upper idle roller installed at the end of the bracket on the upper end of the turning plate, and a lower idle roller installed at the end of the bracket on the lower end of the turning plate. And a U-shaped wound around the turning plate, the upper idle roller and the lower idle roller, and a pickup module coupled to the clamper, and configured to read the disc record by moving the pickup module u-turn by driving the turning plate. Pick-up transfer device for an optical disc player for playing on both sides. According to claim 1, The transfer means, the U-shaped bracket installed on one side of the pickup module, the transmission means is installed on the bracket for transmitting the driving force of the motor, the bending of the bracket to be rotated by receiving power to the transmission means And a lower idler installed at the bracket so that the turning plate composed of a timing pulley, the upper idler roller at the end of the bracket so that the outer edge top line and the lower edge of the turn plate coincide with each other, Rollers, two guide rollers installed on the upper and lower rear side of the turning plate to be aligned on the upper line of the upper idler roller and the lower idle roller lower line, and friction protrusions are formed on the outer circumferential surface, and the outer idler roller and the lower children Timing belts wound in a U-shape to inscribe the roller and the two guide rollers Pick-up moving device of the optical disk player for playing on both sides, characterized in that consisting of. According to claim 1, The conveying means, the U-shaped bracket installed on one side of the pickup module, the transmission means is installed on the bracket for transmitting the driving force of the motor and the bent portion of the bracket to be rotated by receiving power to the transmission means A top plate roller installed at the end of the bracket so that the top line of the turn plate and the top of the outer edge coincide with each other, and a top pulley roller formed of the timing pulley, and a bottom end of the top plate and the bottom end of the top plate. A lower idle roller, a plurality of guide rollers installed to coincide with the upper idle roller lower line and the lower idle roller upper line in front of the turning plate, a friction protrusion is formed on the inner circumferential surface and inscribed in the turning plate, the upper idle roller and the lower idle roller. Tie wound in U-shape to be circumscribed on guide roller Pick-up transfer device for an optical disc player for playing on both sides, characterized by consisting of a mining belt. The optical disc for a double-sided playing according to claim 1, wherein the guide means forms a guide rail on the U-shaped bracket, and configures a U-turn sprocket which is pivotally coaxially rotated on the bending part of the guide rail by the turning plate. Player's Pickup Shifter. According to claim 3, 4 or 5, wherein the transmission means, a double gear consisting of two gears connected to the motor and the electric belt and the outer diameter is different, and a deceleration to reduce the rotational speed received from the motor Double-sided permanent optical disc player, characterized in that it comprises a gear, the idle gear for connecting the reduction gear and the drive gear of the turning plate and the transmission means installed between the double gear and the reduction gear to change the driving speed of the turning plate. Pickup shifter. The optical disc player according to claim 1 or 3, wherein the belt of the conveying means is constituted by a timing belt, and a turning plate and an idle roller which are wound to contact the friction protrusion of the timing belt are constituted by a timing pulley. Pickup shifter. 4. The pickup moving device of claim 1 or 3, wherein the belt of the transfer means comprises a wire. According to claim 3, wherein the turning plate, the upper idle roller and the lower idle roller is composed of a timing pulley and the diameter of the guide roller to be smaller than the turning plate, so that the inner plate and the outer idler roller and the outer idle roller A pickup moving device of a double-sided performance optical disc player, characterized in that it is formed by winding a conveying belt made of a timing belt formed with a friction protrusion on an inner circumference in a U shape. The pickup moving device of claim 2, wherein the guide roller is configured as a single roller so that the outer diameter of the guide roller matches the upper line of the upper idle roller lower line and the lower idle roller upper line. 6. The pickup moving apparatus of claim 5, wherein the guide roller is installed to be in close contact with the turning plate so that the timing belt guided to the guide roller is in close contact with the turning plate. [8] The transmission gear according to claim 7, wherein the transmission means comprises a sleeve formed at an upper end of a large-speed low-speed electric gear installed at an upper side thereof and integrally formed at a lower speed high-speed electric gear at a lower side thereof so as to be elevated. It is coupled to the other end is coupled to the lever operated by the loading plate pickup pickup device for a double-sided playing optical disc player, characterized in that composed of a fork for lifting the transmission gear.