KR19980017836A - Disc loading device for compact disc player - Google Patents

Abstract

The present invention relates to a disc loading apparatus of a compact disc player, and more particularly, to a disc loading apparatus of a compact disc player, which allows the disc entering the inlet to be accurately guided and seated at the center part in the process of being seated on the turntable. An actuating lever 100 rotatably coupled to the top plate 13, the actuating lever 100 having an actuating pin 102 that interferes with a circumference of the disc when one side thereof enters the 12 cm disc D2; One of the pair of guide grooves 310 and 320 provides a first position 322 for setting the entry position of the 8 cm disc D1 and a second position 324 for setting the entry position of the 12 cm disc D2. Chucking plate 300 having a; It is rotatably fixed to the chucking plate 300, one side is interlocked with the operation lever 100, the other side and the first engaging jaw 212 to set the first position 322 in cooperation with the guide groove 320 An opening and closing plate 200 having a second catching jaw 214 for setting the second position 324; Hinge 412 and 422 rotatably coupled to the chucking plate 300, respectively, and a fixed end having gears 414 and 424 engaged with each other on the periphery, and hinges 412 and 422 on the other side. The brake pins 416 and 426 that rotate and are movably inserted along the pair of guide grooves 310 and 320 have a free end configured to protrude, and at least one of the brake pins is the first position 322. It is characterized by consisting of a pair of stop levers (410, 420) supported on the spring 428 on the chucking plate 300 to face the side.

Description

Disc loading device for compact disc player

The present invention relates to a disc loading apparatus of a compact disc player, and more particularly, to a disc loading apparatus of a compact disc player that allows the disc entering the inlet to be accurately guided and seated at the center part in the process of being seated on the turntable.

In general, a compact disc player mounts a disc on which a sound or video signal is recorded on a turntable, and rotates the disc using a spindle motor provided on the bottom of the turntable to rotate the turntable. A reproducing apparatus for reproducing a signal recorded on a disc by an optical pickup device that linearly reciprocates along a predetermined path in a main chassis so that a user can hear or see an audio and video. Referring to FIG. When the configuration of the player is schematically described, a loading motor 3 which is fixed on the main chassis 1 to perform loading of the disc is provided. One side is fixed to the main chassis (1) and the rotating plate which is linked to the moving plate 4 driven by the loading motor (3) is provided on each side.

The moving plate 4 is selectively powered by the loading motor 3 by a switching device such as a solenoid belt, for example, and as the moving plate 4 moves, the rotating plate 4 is fixed to the main chassis 1. Based on the rotational movement will be achieved.

The gear group 6 which decelerates to a constant speed by receiving power from the loading motor 3 is rotatably fixed to one of the rotation plates, and the end gear of the gear group is rotated at both ends of each rotation plate. It is connected to the roller 7 which is rotatably fixed to the stage, and is comprised so that the roller 7 may rotate. The roller 7 is configured in the form of a django which gradually decreases in diameter from both ends to the center in order to guide the disc to the center.

In addition, the rear end of the main chassis is provided with a chucking plate 50 that rotates in accordance with the movement of the moving plate 4 and supports the disk seated on the turntable 8.

The turntable 8 is fixed to a floating plate 10 which is spring-tipped against the main chassis and retains elasticity in the up and down direction, and the floating plate 10 has an optical pickup device 11 for reproducing a signal from a disc. It is installed to be movable. The optical pick-up apparatus includes an objective lens 12 that irradiates a laser generated from a pickup to a disk and simultaneously focuses laser light reflected from the disk to a required focus.

A top plate 13 is provided on an upper portion of the main chassis, and a guide plate 14 which contacts the upper surface of the disc when the disc is loaded is fixed to the bottom of the top plate 13.

On the other hand, at the disc inlet side of the main chassis 1, several optical sensors are provided for determining the entry and type of the disc by irradiating the disc with light.

In addition, on the top plate 13, one side has an operating pin 22 that interferes with the periphery of the disk when entering the 12cm disc (D2), the central portion of the operating lever 20 for operating the opening and closing plate 30 on the other side is rotated Possibly fixed.

The stop plate 40 is installed on the chucking plate 50 so as to be linearly movable in the front and rear directions by the guide pins 42 guided by the guide grooves 54. The stop plate 40 is supported by the spring 46 on the chucking plate 50 to retain the force toward the front at all times, and is formed on the chucking plate 50 in the front-rear direction on one side thereof so that the first plate 52a and A braking pin 44 slidably inserted into the braking groove 52 providing the second position 52b is projected upward.

In addition, the opening and closing plate 30 is rotatably fixed on the chucking plate 50, and one side interferes with the operation lever 20, and the other side cooperates with the braking groove 52 in the first position 52a. And a first catching jaw 32a for braking the 8cm disc D1 and a second catching jaw 32b for braking the 12cm disc D2 at the second position 52b. In addition, the opening and closing plate 30 is configured to have a force to be rotated toward the braking groove 52 at all times is supported by the spring 34 relative to the chucking plate 50.

Looking at the operation of such a compact disc player schematically, when a disc is inserted, the optical sensor detects it to drive the loading motor, and the roller 7 rotates according to the driving of the loading motor. Therefore, the disc located between the roller 7 and the guide plate 14 is slipped with respect to the guide plate 14 by the pressing force and the rotational force of the roller 7, and is inserted into the turntable to form a loading and loading of the loading motor. The chucking plate 9 receiving the power of the loading motor 3 is lowered by a switching device for switching the power, and the chucking operation is continuously performed. When the chucking of the disk is completed, the type of disk is determined by the signal combination of the optical sensors 15, and the spindle motor 15 is driven to fit the loaded disk so that the disk rotates. At this time, when the 8cm disc (D1) is inserted, the disc enters through the guide roller (7) and is caught by the stop plate (40) so that it can no longer enter and secures the entry position. At this time, since the opening and closing plate 30 is rotated to the braking groove 52 side by the spring 34, the braking pin 44 of the stop plate 40 is the first catching jaw 32a at the first position 52a. Since the movement of the stop plate 40 is restricted because it is caught in the 8cm disc (D1) is to secure the entry position.

And when the 12cm disk (D2) having a relatively large diameter enters, the periphery of the disk pushes the operation pin 22 of the operation lever 20 to the outside, so the tip of the operation lever 20 releases the opening and closing plate 30. Since the tip of the 12 cm disc (D2) pushes the stop plate 40, the stop plate 40 has the guide pins 42 and the braking pins 44 with the guide grooves 54 and the braking grooves 52, respectively. Retreat by moving along. At this time, the opening and closing plate 30 is repositioned by the spring 46 elastic force as the operating lever 20 gradually returns from the point when the maximum diameter of the 12 cm disc D2 passes through the operating pin 22, and the braking pin At the time when 44 reaches the second position 52b, the second catching jaw 32b restrains the braking pin 44 to provide the entry position of the 12 cm disc D2.

After the loading of the disk is completed, the feeding motor (not shown) is driven to move the optical pickup device to a turntable near or away from the turntable, and at the same time to irradiate the laser to the bottom of the disk and reflect the light. The video or audio signal is reproduced by the wavelength of.

On the other hand, when unloading, the unloading is performed only by the rotation of the guide roller 7 in the case of the 8cm disc D1, and in the case of the 12cm disc D2, the tip of the discharged disc is the operating pin of the operating lever 20. The stop plate 40, which is released by interfering with the 22, tries to move forward by the spring 46 elastic force and the conveying force of the guide roller 7 simultaneously act as unloading.

The compact disc player loading device having the above configuration has a problem that the loading operation is unstable because the configuration of regulating the positions of the 8 cm disc D1 and the 12 cm disc D2 is not only complicated, but a stable guide cannot be achieved during disc loading. there was.

That is, the disk should be seated on the turntable exactly when the entry is completed, which requires the disk to enter the center at the first entry. Conventionally, for this purpose, the roller 7 is configured in a django shape so that two points of the disk's circumference contact the roller 7 so that the disk is guided to the center part by the rotation of the roller 7, but the disc enters eccentrically. If the disc is allowed, the disc is allowed to enter. Since then, the disc is moved and the disc is moved while the roller itself performs a predetermined position correction as described above.

In particular, in the case of a small disk, the above problem has been aggravated. For example, as shown in FIG. 1, two types of discs have recently been developed, 8 cm discs (D1) and 12 cm discs (D2), and compact disc players are compatible with these two types of discs. Since the 8cm disc (D1) has a small size because it is made to have a problem that it is difficult to insert correctly in the center of the loading. Therefore, in the case of 8cm, when the disc is eccentric entry is made to have a force to be inserted more at the maximum insertion position, the stop plate 40 is limited by the opening and closing plate 30, the 8cm disc (D1) ) Is collided with the stop plate 40, so that not only the disk is damaged but also the loading operation becomes unstable.

Accordingly, the present invention has been made in view of the above problems, and an object thereof is to provide a disk loading apparatus of a compact disc player which can simplify the configuration and attain a stable disk loading operation.

1 is a plan view showing the configuration of a disc loading apparatus of a conventional compact disc player

2 is a plan view showing the configuration of a disc loading apparatus of a compact disc player according to the present invention;

Figure 3 is a plan view showing an operating state when using the 8cm disc of the disc loading device of the compact disc player according to the present invention

Figure 4a is a plan view showing the state before the entry of the operating state of using the 12cm disc of the disc loading apparatus of the compact disc player according to the present invention

Figure 4b is a plan view showing the state after the entry of the operating state of the disc loading device of the compact disc player according to the present invention when using the 12cm disc.

5 is a plan view showing another embodiment of the disc loading apparatus of the compact disc player according to the present invention;

Explanation of symbols on the main parts of the drawings

1: main chassis 13: top plate

100: operating lever 102: operating pin

200: opening and closing plate 202: spring

212: first jaw jaw 214: second jaw jaw

300: chucking plate 310, 320: guide groove

322: first position 324: second position

410, 420: stop lever 412, 422: hinge

414, 424: gear 416, 426: braking pin

D1: 8 cm disc D2: 12 cm disc

An object of the present invention is to be rotatably coupled to the top plate, one side of the 12cm disc (D2) when entering the operating lever having an operating pin to interfer with the peripheral edge of the disk; One is a chucking plate having a pair of guide grooves providing a first position for setting the entry position of the 8cm disc (D1) and a second position for setting the entry position of the 12cm disc (D2); It is rotatably fixed to the chucking plate, one side is interlocked with the operation lever, the other side is opened and closed the first engaging jaw for setting the first position and the second engaging jaw for setting the second position in cooperation with the guide groove A plate; A fixed end rotatably hinged on the chucking plate and formed with gears meshing with each other on the periphery of the chucking plate, and a free end rotatable around the hinge on the other side and protruding with a braking pin movably inserted along a pair of guide grooves; At least one can be achieved by the disk loading device of V-AL's compact disc player composed of a pair of stop levers spring-loaded on the chucking plate so that the braking pin is directed toward the first position side.

Best Mode for Carrying Out the Invention Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

Figure 2 shows the configuration of a preferred embodiment of the disk loading apparatus of the compact disc player according to the present invention, according to the present invention is that one side on the top plate 13 interferes with the periphery of the disc when entering the 12 cm disc (D2) The central portion of the operation lever 100 for operating the opening and closing plate 200 to be described later on the other side having an operation pin 102 is rotatably fixed.

And on the chucking plate 300, a pair of stop levers 410 and 420 rotatably coupled to the hinges 412 and 422 and having a fixed end formed in a circular shape and a free end pivoting around the hinge are provided. It is installed. Each of the stop levers 410 and 420 is formed with gears 414 and 424 that mesh with each other at a fixed end circumference, that is, at the circumference of the hinge 412 and 422. In addition, brake pins 416 and 426 are inserted into the other ends of the stop levers 410 and 420 to be movable along the guide grooves 310 and 320 formed in an arc shape on the chucking plate 300. It is composed of protrusions. Each of the guide grooves 310 and 320 is arranged on a circumference with respect to the hinges 412 and 422, respectively, at least one of which is a first position for setting the entry position of the 8 cm disc D1. 322 and a second position 324 for setting the entry position of the 12 cm disc D2.

On the other hand, the at least one stop lever is configured to hold the force to be positioned at the first position 322 side always spring (428) on the chucking plate 300.

In addition, the opening and closing plate 200 is rotatably fixed on the chucking plate 300, one side interferes with the operation lever 100, the other side cooperates with the guide groove 320, the first position 322 And a first catching jaw 212 for braking the 8cm disc D1 and a second catching jaw 214 for braking the 12cm disc D2 at the second position 324. In addition, the opening and closing plate 200 is configured to have a force to be rotated toward the guide groove 320 is always supported by the spring 202 relative to the chucking plate 300.

The disc loading apparatus of the compact disc player according to the present invention having such a configuration draws the disc into operation by operating the loading motor 3 when the disc enters. At this time, if the disk is an 8cm disk (D1) enters the peripheral edge of the disk does not interfere with the operating lever 100, in the case of 12cm disk (D2) enters while interfering with the operating lever (100).

Hereinafter, referring to the drawing, the operation state according to the type of the disc to be entered will be described first. Referring to FIG. 3, the 8 cm disc D1 will be described. When the disc D1 is inserted, the optical sensor senses this and drives the loading motor. The roller 7 rotates according to the driving of the loading motor. Therefore, the disk located between the roller 7 and the guide plate 14 is slipped with respect to the guide plate 14 by the pressing force and the rotational force of the roller 7, and is inserted into the turntable to form a loading and the loading motor power. The chucking plate 9 receiving the power of the loading motor 3 is lowered by a switching device for switching the chucking operation. When the chucking of the disk is completed, the type of disk is determined by the signal combination of the optical sensors 15, and the spindle motor 15 is driven to fit the loaded disk so that the disk rotates. The disc enters through the guide roller 7 and is caught by the brake pins 416 and 426 of the stop levers 410 and 420 so that the disc cannot enter any more to secure the entry position. At this time, since the opening and closing plate 200 is rotated to the guide groove 320 side by the spring 202, the brake pin 416 of the stop lever 410 is the first locking jaw 212 in the first position 322. Since the movement of the stop lever 410 is limited, and the stop lever 420 of the other side to be engaged is also fixed, the entry position of the 8 cm disc D1 is secured.

When the relatively large 12cm disc (D2) is entered, as shown in Figure 4a the front end of the disk pushes the operating pin 102 of the operating lever 100, the front end of the operating lever 100 is opened and closed Since the plate 200 is released, the stop levers 410 and 420 of the stop levers 410 and 422 are guide grooves 310 and 320, respectively, by the force of the end of the 12 cm disc D2 pushing the stop lever. And retreat by moving along the guide grooves 310 and 320. At this time, the opening and closing plate 200 is returned to its original position by the spring 428 elastic force as the operation lever 100 gradually returns from the point when the maximum diameter of the 12 cm disc D2 passes through the operation pin 102. At the time when 416 reaches the second position 324, as shown in FIG. 4B, the second locking jaw 214 restrains the brake pin 416 to provide an entry position of the 12 cm disc D2. .

After the loading of the disk is completed, the feeding motor (not shown) is driven to move the optical pickup device toward or near the turntable and irradiate the laser to the bottom of the disk and reflect the light. Video or audio signals are reproduced by the wavelength of light.

And, when unloading, in the case of 8cm disc (D1) unloading is made only by the rotation of the guide roller (7), in the case of 12cm disc (D2) the tip of the discharged disc is the operating pin of the operating lever 100 The stop levers 410 and 420, which are restrained by interfering with the 102, are forced to move forward by the spring 428 elastic force and the conveying force of the guide roller 7 simultaneously to unload.

On the other hand, the present invention, when the disc is unilaterally entered, the peripheral edge of the disc is in contact with the brake pin of any one side, and in that state is given a continuous entry force to move to the center portion to complete the entry into the correct position do.

In particular, in the case of a 12cm disc D2, when the brake pin 426 of one side (to the left in the drawing for convenience) is first contact-pressed by eccentric entry, the stop lever 420 having the brake pin 426 is pressed. At the same time as the rotation, the opposite stop lever 410 engaged with it rotates. In this case, the stop lever 410 on the opposite side receives a force to rotate in the same direction as the first stop lever 420. However, since the stop lever 410 on the opposite side is restricted from movement by the guide groove 320 and thus cannot be rotated, the 12 cm disc D2 moves to the center part and continues to move forward, and reaches the center part and brakes on both sides. Since the stop levers 410 and 420 are expanded to both sides from the moment of simultaneous contact with the pins 416 and 426, entry to the correct position is made.

Meanwhile, according to FIG. 5, the stop levers 410 and 420 may be moved by holding the spring 500 so as to move in the direction in which the braking pins 416 and 426 are close to each other. It is possible to achieve the purpose of the invention. That is, in this state, when the 12cm disc D2 enters the eccentricity, when the brake pin 426 of one side (to the left in the drawing for convenience) is first contact-pressed by the eccentric entry, the brake pin 426 has the brake pin 426. At the same time as the stop lever 420 rotates, the opposite stop lever 410 that is supported by the spring 500 rotates. At this time, the stop lever 410 on the opposite side is attracted to the first stop lever 420 by the spring 500 force, and thus receives the force to rotate in the same direction. However, since the stop lever 410 on the opposite side is restricted from the movement by the guide groove 320 and thus cannot be rotated, the stop lever 420 on the left side is limited to the rotation by the spring 500 force and thus the 12 cm disc D2. ) Moves to the center and continues to move forward, and since the stop levers 410 and 420 are extended to both sides from the moment of reaching the center and simultaneously contacting the brake pins 416 and 426 on both sides, the entry is made precisely. Entry to the location will be made.

As described above, the disc loading apparatus of the compact disc player according to the present invention has a fixed end on which one side is rotatably hinged to the chucking plate, and has a pair of stop levers having an operation pin guided to the chucking plate on the other side. In addition, the stop levers are rotated in the same direction so as to limit the configuration, and at the same time, it has the effect of improving the stability of the disc loading by guiding the 8 cm disc and the 12 cm disc precisely at the center.

Claims (1)

An actuating lever 100 rotatably coupled to the top plate 13, the actuating lever 100 having an actuating pin 102 that interferes with a circumference of the disc when one side thereof enters the 12 cm disc D2; One of the pair of guide grooves 310 and 320 provides a first position 322 for setting the entry position of the 8 cm disc D1 and a second position 324 for setting the entry position of the 12 cm disc D2. Chucking plate 300 having a; It is rotatably fixed to the chucking plate 300, one side is interlocked with the operation lever 100, the other side of the first catching jaw for setting the first position 322 in cooperation with any one guide groove 320 ( 212 and an opening and closing plate 200 having a second catching jaw 214 for setting the second position 324; Hinge 412 and 422 rotatably coupled to the chucking plate 300, respectively, and a fixed end having gears 414 and 424 engaged with each other on the periphery, and hinges 412 and 422 on the other side. The brake pins 416 and 426 that rotate and are movably inserted along the pair of guide grooves 310 and 320 have a free end configured to protrude, and at least one of the brake pins is the first position 322. Disc loading device of a compact disc player consisting of a pair of stop levers (410, 420) which is supported by a spring (428) to face the side.