KR200339946Y1 - Device for distinguishing disk size of disk player - Google Patents

Abstract

The present invention relates to a disc discrimining apparatus of a disc player having a structure capable of making the disc player cheaper and making it slim by identifying the size of the disc in a simpler way. The disc discrimination apparatus of the optical disc player according to the present invention is formed inside a pair of linear guide grooves 5 formed in the upper plate 2, respectively, in a pair of fixing grooves 5a positioned at a position 8 cm or more apart. A pair of lateral shift levers 10 positioned and having first pins 11 guiding the disk to the chucking position and operating simultaneously by gear connection; Connected to the transverse lever 10 via a connecting link 12 and having a second pin 14 contacting the disk when the disk is in the chucking position, the second pin 14 being defined by the disk; When it is positioned at the position of the swing lever 13 for operating the movable piece 22 connected with the chucking lever means 3 to operate the chucking lever means 3 for operating the disk chucking plate 4. Includes; The first pins 11 are separated from the fixing grooves 5a of the linear guide grooves 5 when the discs to be loaded are in contact at the same time.

Description

Device for distinguishing disk size of disk player

The present invention relates to a disc player, and more specifically, to determine the size of the disc loaded in the slot-in (slot-in) type disc player, disc determination of the disc player that can easily chuck the loaded disc Relates to a device.

In general, a disc player is a device for recording information on a disc or reproducing information recorded on a disc by irradiating light onto a disc-shaped recording medium such as a compact disc (CD), a digital video disc (DVD), or the like. The type of the recording medium is the same, but the recording method is divided into a compact size and a general size according to the size of the recording surface, and the disc reproducing apparatus automatically recognizes and reproduces the type of the recording medium.

Particularly, in the slot-in type disc player used in the slim disc player, the disc player adopting the roller method itself is driven by the rollers in the disc player, unlike the tray type, when the recording medium is loaded. Since it adopts a loading method, there is an advantage that the protection aspect and the loading and unloading of the internal device of the disc player can be automated, which is widely used in expensive products.

However, in order to automate loading / unloading, since an initial loading operation is required to detect the disc to be inserted and seat it on the turntable when the recording medium is initially inserted into the inlet of the disc player, the recording medium is inserted and There is a need for a sensor capable of identifying the type of recording medium.

Therefore, in the related art, as shown in FIG. 1, a main substrate 102 mounted below the disc player 101 and a subsidiary substrate 103 mounted above are provided, and the sub-substrates 103 are located at different positions. The light emitting units 104 and 105 are provided, and the main substrate 102 is provided with the light receiving units 106 and 107 at positions corresponding to the light emitting units 104 and 105, respectively. That is, the signal emitted from the light emitting units 104 and 105 is blocked by the inserted disc, and thus the insertion of the disc is sensed by not being received by the light receiving units 106 and 107, while the disc size is sensed so as to detect the initial loading and recording medium. Identifies the size.

In the sensor sensing method, when a disc, which is a recording medium, is inserted into a disc player, the light on the light emitting unit detects the insertion of the disc according to whether the light receiving unit receives the light, and all the light applied to the two light receiving units is blocked by the disc. In this case, it is determined that the recording medium has a general size, that is, a size of 12 cm, and when the light of the outer light emitting part is not applied to the light receiving part, it is determined that it is a compact recording medium, that is, a recording medium having a size of 8 cm. .

However, in the conventional disc player, when the compact disc is inserted and ejected, the disc starts to be ejected, the ejection position recognition, and the reinsertion recognition are inefficiently performed, thereby increasing the cost and degrading workability.

In order to solve this problem, Korean Patent Application Publication No. 1999-0034219 published on August 25, 1999 discloses a "sensing device for an optical recording medium using a switch."

The invention is a pair of levers for guiding a compact disc of 8 cm and a disc of 12 cm inserted into the disc player, and a lever means for guiding switching according to the amount of movement to the lever means moving according to the size of the disc. Switch means. That is, each switch means located inside and outside is operated by lever means moving in accordance with the size of the disc, so as to drive a loading motor for moving the disc into the player.

In order to sense disks of the conventional different sizes as described above, by having a configuration in which a pair of switches operated by lever means moved by the disks are positioned at different positions, The use of lever means for operating costs and operating switches increases the complexity of the structure, which impairs the slimming of the disc player.

Accordingly, an object of the present invention is to provide a disc discrimining apparatus of a disc player having a structure which can make the disc player cheaper and make it slim by identifying the size of the disc in a simpler way.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 schematically shows a disc discrimination apparatus of a conventional disc player.

2 is a schematic perspective view of a disc discrimination apparatus of a disc player according to the present invention.

FIG. 3 is a plan view of the disc discrimination apparatus of the disc player shown in FIG. 2; FIG.

Fig. 4 is a bottom view of the disc discrimination apparatus of the disc player shown in Fig. 2 with the pickup apparatus removed.

5A and 5B are diagrams for illustrating the loading state of a disc of small size, for example having a size of 8 cm.

6A and 6B illustrate the loading state of a disc of normal size, for example having a size of 12 cm.

7 is a partially exploded perspective view for illustrating chucking lever means for chucking a disk to a turntable;

Explanation of symbols on the main parts of the drawings

1: optical disc player 2: top plate

3: chucking lever means 4: chucking plate

5: straight guide groove 5 a: fixing groove

6: double circular guide groove 6a: inner groove

6b: outer groove 7: photo sensing hole

8: loading motor 9: roller

10: lateral shift lever 11: first pin

12: Link link 13: Swing lever

14 second pin 15 rotating plate

16 gear unit 17 straight gear unit

18: guide groove 19: pin member

20: tension spring 21: turning point

22: moving piece 23: chucking lever

24: gear portion 25: small gear

26: compression spring 27: circular guide groove

28: chucking plate holder 29: wing

An object as described above is a disc player in which a disc is inserted by driving a loading motor when the disc is inserted, as long as it is formed inside a pair of straight guide grooves formed in the upper plate and positioned at a position 8 cm or more apart. A pair of lateral movement levers each having a pair of first pins positioned in the pair of fixing grooves to guide the disc to the chucking position and operating simultaneously by a gear connection; A disc chucking plate connected to the transverse lever via a connecting link, the disc having a second pin contacting the disc when the disc is in the chucking position and when the second pin is positioned in the predetermined position by the disc A pivoting lever for actuating a moving piece associated with the chucking lever means to actuate the chucking lever means for activating the chucking lever means; The first pins may be achieved by the disc discrimining apparatus of the disc player according to the present invention, wherein when the discs to be loaded are in contact with each other, the first pins are separated from the fixing grooves of the straight guide grooves.

In the above, the first pins are located at a position where contact with the disk is prevented when the disk is operated by the chucking lever means.

In the above, the second pin is located in the double arc-shaped grooves connected to each other, and moves to the inner and outer grooves of the double arc-shaped groove to operate the moving piece according to the size of the inserted disk.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 2 is a schematic perspective view of the disc discrimination apparatus of the disc player according to the present invention, FIG. 3 is a plan view of the disc discrimination apparatus of the disc player shown in FIG. 2, and FIG. 4 is a view of FIG. 2 with the pickup apparatus removed. View of the disc discrimination apparatus of a conventional disc player.

As shown in FIGS. 2 to 4, the disc player 1 according to the present invention has a top plate 2 having a plurality of guide balls formed thereon and provided with a chucking plate 4 for chucking the disc, and a chucking plate 4. And lever means 3 for disc chucking provided on the side for chucking the disc.

The upper plate 2 has a pair of linear guide grooves 5 extending laterally on both sides of the chucking plate 4 positioned at the center, and a double arc-shaped guide groove formed of two circular arc grooves 6a and 6b ( 6) is formed in the rear part. In addition, the upper plate 2 is formed with a photosensor sensing hole 7 in front of the disk for detecting the disk is inserted into the player. As shown in FIG. 4, the roller 9 located in front of the inner side of the upper plate 2 is used when the disk is detected by a photosensor (not shown), which causes the loading motor 8 to be driven by a signal from the photosensor. It is operated to insert the disc into the player 1 by driving.

On the other hand, in the linear guide groove 5, each of the first pins 11 provided to the pair of lateral movement levers 10, which are disposed symmetrically with respect to the chucking plate 4 around the chucking plate 4, respectively. Is inserted. Each of the straight guide grooves 5 is formed in the inner end portion such that the fixing grooves 5a face the front of the disc player 1 at a predetermined angle, as shown in Fig. 6B. 11 are located in the fixing groove 5a of the straight guide groove 5. These fixing grooves 5a have a distance of at least 8 cm or more so that the disk CD1 having a size of 8 cm can pass, as can be seen from FIG. 5B. In addition, the fixing groove 5a is formed such that when the first pins 11 are positioned in the fixing groove 5a, a line connecting the centers of the first pins 11 passes through the center of the chucking plate 4. Initially, the centers of the first pins 11 are arranged parallel to the center of the chucking plate 4.

Each of the lateral movement levers 10 has a linear gear portion 17 engaged with the gear portion 16 formed on the outer circumferential portion of the rotating plate 15 at an inner end portion thereof, and a portion where the linear gear portion 17 is formed. Adjacent to the straight guide groove 18 is formed. The pin member 19 provided on the upper plate 3 is positioned to be guided along the guide groove 18 so as to prevent jamming due to eccentricity when the lateral movement levers 10 move laterally. , The lateral movement levers 10 can move accurately. Each of the lateral movement levers 10 is connected to each other by a pair of tension springs 20 as shown in the figure, and each of the lateral movement levers 10 are connected by these tension springs 20. The gear portion 17 formed in the field is securely engaged with the gear portion 16 formed on the rotating plate 15.

The rotating plate 15, which is gear-coupled with the respective lateral movement levers 10, is connected to each other via a chucking plate holder 28 and a pin (not shown) which receives the chucking plate 4 therein. The chucking plate holder 28 is connected to the chucking lever means 3 by a wing piece 28. Therefore, the rotating plate 15 is rotated by a predetermined range by the rotation of the chucking plate holder 28 when the chucking lever means 3 is operated to chuck the disc.

On the other hand, the second pin 14 provided on the turning lever 13 is located in the double arc-shaped guide groove 6 formed at the rear of the upper plate 2, and the turning lever 13 is the transverse lever 10. The movement of the transverse movement lever 10 is transmitted through the connecting link 12 as they move, and actuates the chucking lever means 3 according to this movement. The second pin 14 provided on the pivot lever 13 is located in an arcuate groove 6a initially located inside, as shown in the figure. The arcuate groove 6a is formed such that the disk CD1 to be chucked is in contact with the pin 14 when the disk CD1 having a size of 8 cm is positioned at the chucking position as shown in FIGS. 5A and 5B. The arcuate groove 6b formed on the outer side is formed by the disk CD2 and the second pin 14 when the disk CD2 having a size of 12 cm is positioned at the chucking position as shown in FIGS. 6A and 6B. It is formed to be in contact.

The turning lever 13 is installed on the upper plate 2 so as to pivot about the connection point 21 located in the arc-shaped guide groove 27 as shown in the drawing, and has a moving part having a gear part 24 ( 22). The moving piece 22 is connected with some clearance with the chucking lever 23 which comprises the chucking lever means 3 of the disc player 1 as shown in more detail in FIG. In order to prevent the chucking lever 23 and the moving piece 22 from flowing due to this play, a compression spring 26 is provided between the moving piece 22 and the chucking lever 23. When the moving piece 22 moves by the turning of the turning lever 13, the gear part 24 formed in the moving piece 22 moves to the front of the disc player 1, and at this time, the moving piece 22 The gear part 24 provided in the gear meshes with the small gear 25 that is rotated by the driving of the loading motor 8. The gear portion 24 is engaged with the small gear 25 which is rotated by the driving of the loading motor 8, so that one chucking lever 23 is driven by the loading motor 8 to drive the disc player 1. Moving forward, the other chucking lever 23a moves to the rear of the disc player 1. As the chucking lever 23a moves forward, the turntable (not shown) connected to the chucking lever 23a also rises to the pickup position simultaneously with the chucking of the disk.

The operation of the disc discrimination apparatus of the disc player according to the present invention having the structure as described above will be described with reference to Figs. 5A to 6B.

5A and 5B show a state in which a compact disc having a size of 8 cm is inserted into the disc player 1, and FIGS. 6A and 6B show a disc having a size of 12 cm in the disc player 1. It is a figure which shows the state inserted respectively.

As shown in FIG. 5A, when the compact disc CD1 having a size of 8 cm is inserted into the disc player 1, sensing light of a photosensor (not shown) irradiated through the photosensor sensing hole 7 is detected. Blocked by the disc CD1, an insertion signal of the disc CD1 is generated. The loading motor 8 is operated by this signal so that the roller 9 is operated to load the disc CD1 into the disc player 1. Therefore, the disc CD1 is inserted into the disc player 1 by the roller 9. At this time, the disc CD1 is eccentrically out of the correct loading position so that the disc CD1 is made of one of the first pins 11 protruding into the disc player 1 through the straight guide groove 5. When only one pin 11 is in contact, the fixing groove 5a because the first pin 11 in contact with the disc CD1 is interlocked with the other first pin 11 through the lateral movement levers 10. It does not fall out of.

Therefore, when the disc CD1 is in contact with one of the first pins 11, according to the present invention, the fixing groove (not shown) is formed at the inner end of the straight guide groove 5 by the pin 11 to which the disc CD1 is in contact. Instead of disengaging from 5a), the disk CD1 is guided to the chucking plate 4 located in the center portion by the first pin 11 in contact.

As described above, while the disc CD1 is guided so as to be accurately positioned on the chucking plate 4 by the pin 1, the inner portion of the disc CD1 is double arced guide groove (as shown in Fig. 5B). In contact with the second pin 14 located at the end of the inner groove 6a of 6), the second pin 14 is pushed outward. When the center of the disc CD1 is positioned to coincide with the center of the chucking plate 4, by the movement of the second pin 14, the turning lever 13 connected to the pin 14 is operated to operate the chucking lever. The means 3 are operated as described above. Therefore, the moment the center of the disc CD1 is located in the center of the chucking plate 4, the disc CD1 is chucked by the chucking plate 4 so that the information is read by the pick-up apparatus.

On the other hand, the disk CD2 having a size of 12 cm is a pair of first pins 11 respectively positioned in the fixing grooves 5a of the pair of linear guide grooves 5 as shown in FIGS. 6A and 6B. ) Are simultaneously in contact with the disc CD2, so that the first pins 11 are separated from the fixing groove 5a. The first pins 11 separated from the fixing groove 5a are moved outward along the straight guide groove 5 by the disk CD2 which is continuously moving. As the first pins 11 are separated from the fixing grooves 5a and move along the straight guide grooves 5, the transverse movement levers 10 in which the first pins 11 are installed move in the tension transverse direction, and one side transversely. The connecting link 12 connected with the directional lever 10 is pivoted about the connecting point 21, and moves along the arc-shaped guide groove 27. As a result of the movement of the link link 12, the pivot lever 13 connected through the link link 12 and the link point 21 is pivoted as shown in FIG. 6B, such that the second pin 14 is double arced. It moves to the groove 6b of the outer side of the guide groove 6.

When the center of the disk CD2 having a size of 12 cm is located at the center of the chucking plate 4, like the 8 cm disk CD1 as described above, the turning lever 13 connected to the second pin 14 is provided. ) And the chucking lever means 3 is operated so that the moment the center of the disc CD2 is located at the center of the chucking plate 4, the disc CD2 is chucked by the chucking means and picked up by the pick-up device. The information is read.

On the other hand, when the disk CD2 is chucked by the chucking plate 4, the first pins 11 are outside the straight guide groove 5 by the rotational operation of the rotating plate 15 by the chucking lever means 3. By being located at, it can be prevented from interfering with the disc CD2 being rotated during the drive of the disc player 1.

According to the disc discrimination apparatus of the disc player according to the present invention having the structure as described above, discs of different sizes are guided to the chucking position by pins, and the positions of the pins for actuating the chucking means change according to the size of the disc. Therefore, by identifying the size of the disc in a simpler method than in the related art, the disc player can be manufactured more inexpensively, and the disc player can be made slimmer by omitting a separate device for determining the disc size.

Claims (3)

A disc player in which a disc is inserted by driving a loading motor when the disc is inserted, It has a pair of first pins which are formed inside a pair of straight guide grooves formed in the upper plate and are located in a pair of fixing grooves respectively positioned at a distance of 8 cm or more and guide the disk to the chucking position. A pair of transverse levers actuated simultaneously by; A disc chucking plate connected to the transverse lever via a connecting link, the disc having a second pin contacting the disc when the disc is in the chucking position and when the second pin is positioned in the predetermined position by the disc A pivoting lever for actuating a moving piece associated with the chucking lever means to actuate the chucking lever means for activating the chucking lever means; And the first pins are separated from the fixing grooves of the straight guide grooves only when the loaded discs contact at the same time. 2. A disc discrimination apparatus according to claim 1, wherein the first pins are located at positions where contact with the disc is prevented when the disc is operated by the chucking lever means. The method according to claim 1 or 2, wherein the second pin is located in a double arc-shaped groove connected to each other, and moves to the inner and outer grooves of the double arc-shaped groove according to the size of the inserted disk to move the moving piece. Disc disc discrimination apparatus of a disc player, characterized in that the operation.