KR980011246A - The disk guiding device of the optical disk player - Google Patents

Abstract

The present invention discloses a disk guiding apparatus for an optical disk player.

Generally, in an optical disc player, it is desired to properly place 8 cm and 12 cm optical discs on the turn table in the main new city.

The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a disc drive apparatus and a disc drive apparatus which can easily place a disc having a different diameter through a plurality of guider pairs, a support post and a spring, Further improved reliability

Description

The disk guiding device of the optical disk player

FIG. 1 is a plan view conceptually showing a disc guiding apparatus according to the present invention. FIG.

2 and 3 are plan views showing the guiding state of the 8 cm disc.

4 and 5 are plan views showing a guiding state of a 12 cm disc.

DESCRIPTION OF THE REFERENCE NUMERALS

10: main chassis 11, 12: guide slot

20, 30, 40, 50: first and second guider pairs 20a, 30a:

21, 31, 41, 51: first and second support posts 22: guide posts

62, 62 ': engagement surface 60, 60': stopper

70: moving plate 71, 72, 73: first, second, third,

71a, 72a, 73: engaging surface 80: moving plate

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk player, and more particularly, to a disk guide apparatus for positioning two disks having different diameters on a turntable.

In general, optical discs can record data at a relatively high density compared with magnetic recording tapes and LPs, and can be semi-permanently stored. Recently, optical disc players using such optical disc players have become popular.

Such optical disk players include a laser disk player and a compact disk player. Among such optical disk players, a compact disk player (CDP Abbreviated as " abbreviated ").

That is, the CDP has been proposed to be a separate player, that is, portable or combined with an audio system, or has come into the market in recent years and is proposed as a CDP for automobiles according to the advancement of automobiles.

Such a CDP is usually designed to record and reproduce an optical disc having a smaller diameter than LDP, that is, a disc having a diameter of 8 cm / 12 cm.

In this case, optical disks having different diameters must be recorded and reproduced through a single player. In order to facilitate the recording / reproducing operation, optical discs of different sizes are mounted on the turntable It is necessary to precisely guide and position it.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to easily guide a disc having a diameter of 8 cm / 12 cm onto a turn table of a main stream.

In order to achieve the above object, a disc guiding apparatus of an optical disc player according to the present invention includes a disk guiding apparatus for guiding an 8 cm / 12 cm disc on a turn table provided on a center surface of a main chassis, Wherein the first and second guide slots are formed on at least one of the front and rear sides of the disk, the first and second guide slots being gradually inclined toward the rear side with respect to the guide direction of the disk; And a first support post is extended on a front side end portion thereof, and a quadrangular-shaped engagement defect is formed on the rear side of the first support post, A first guide pair formed; A guide post extended from one side of the first guider corresponding to the first guide slot of the main chassis and slid along the first guide slot; And a second support post is extended at a front side end portion thereof, and at least a second support post of at least one side of the second support post is connected to a second side of the second chassis of the main chassis A second guider pair slidably installed along the guide slot; A locking means for locking the 8 cm disc to limit its loading position and releasing locking when the 12 cm disc is inserted; A chucking plate rotatably hinged to a rear end of the main chassis and chucking the disc on a turntable; A first spring that is coupled between both ends of the rear end of the first guider pair so as to elastically support the first guide pair in an inward direction; A second spring that is coupled to a front side end portion of the second guide pair and both ends of the second guide pair so as to elastically support the second guider pair toward the front side; A pressing force releasing means for releasing a contact state between the first and second support posts and the disk in a state in which the optical disk is seated on the middle of the turntable; And the like.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

FIG. 1 is a plan view conceptually showing a disc guiding apparatus according to the present invention, FIGS. 2 and 3 are plan views showing guiding process of an 8 cm disc, and FIGS. 4 and 5 show a guiding process of a 12 cm disc FIG.

As shown therein, the disc guiding apparatus of the optical disc player according to the present invention includes a main chassis 10 having a pick-up unit (not shown) including a turntable on its inner center surface .

On the main chassis 10, more specifically, on at least one of the front and rear sides of the main chassis 10 (the one formed on the left side is illustrated), the rear side The first and second guide elongated holes 11 and 12 are gradually inclined toward the first and second guide holes 11 and 12, respectively.

On the other hand, on the main chassis 10, the first pair of guiders 20, 30 are positioned symmetrically with respect to each other in the longitudinal direction. At this time, the first guider pair 20, 30 is pivotably hinged to the main chassis 10 on its center side, and first support posts 21, 31 are extended on the front side thereof.

A first guide slot 11 is formed in either one of the first guide pairs 20 and 30, that is, the first guide pair 20 on the side corresponding to the first guide slot 11 of the main chassis 10 The guide post 22 is extended so as to be slidable. In addition, the first guide pair 20, 30 is elastically supported in the inward direction by a first spring S having both ends coupled between the rear end portions thereof. In the rear surface of the first guide pair 20, 30, there are formed substantially rectangular engagement grooves 20a, 30a.

The second guider pair 40 and 50 are symmetrically positioned on the rear side of the main chassis 10 in the longitudinal direction. Each rear end of the second guider pair 40 and 50 is connected to the first guider pair 20, 30, respectively, and second support posts 41, 51 are respectively extended at the front side end portions thereof. At this time, the second support post 41 on the side of the second support posts 41, 51 corresponding to the second guide slot 12 of the main chassis 10 is slidable along the second guide slot 12 . The second pair of guides 40 and 50 are elastically supported by the front side end portions thereof and the second spring S 'having both ends thereof coupled to the main chassis 10 toward the front side.

As described above, the first and second guide slots 11 and 12 are formed on only one side of the main chassis 10, and a guide formed on the first and second guide pairs 20, 30, 40, Since the first and second guider pairs 20, 30, 40 and 50 are coupled to each other so that the posts 22 and the second support posts 41 are slidably inserted, It is not necessary to provide a post or the like.

At this time, since the 8 cm / 12 cm discs (D, D ') have different diameters, it is necessary to limit the loading distance when guiding the 8 cm disc (D). For this purpose, locking means is provided to lock the loading position of the 8cm disc D when the 8cm disc D is inserted, and to release the locking when the 12cm disc D 'is inserted.

A detailed structure of the locking means is shown in FIG. 1, wherein one side of the main chassis is pivotably hinged to one side of the main chassis, and stoppers 60 and 60 ', both ends of which are extended in a crooked shape, .

At this time, engagement surfaces 61 and 16 'for selectively engaging with the second support posts 41 and 51 of the second guide pair 40 and 50 are formed at inner ends of the stoppers 60 and 60' At the outer end of the stoppers 60 and 60 ', auxiliary guide posts 62 and 62' slidably inserted into the rectangular engaging grooves 20a and 30a of the first guide pair 20 and 30 are extended. The stoppers 60 and 60 'are resiliently supported in the respective inward directions by a third spring S "at which both ends thereof are coupled between their respective outer ends and the main chassis 10.

The discs D and D 'are supported by the first and second support posts 21, 31, 41 and 51, respectively, in a state where the discs D and D' And the first and second springs S and S ', and the elastic force of the first and second springs S and S'. That is, the turntable can not rotate together with the rotation of the turntable. Accordingly, the urging force between the first and second support posts 21, 31, 41, 51 and the disc D, D 'is released.

The pressing force releasing means is largely divided into a moving plate 70 and first, second and third releasing pieces 71, 72 and 73.

The moving plate 70 is slidably installed on the inside and outside of the main chassis 10 by guiding means. A plurality of guide grooves 70a are formed on the upper surface of the moving plate 70 along the longitudinal direction.

The first, second and third releasing pieces 71, 72 and 73 are sequentially formed from the inner and both sides of the moving plate 70 and include first and second supporting posts 21, 31, 41 and 51, And have engagement surfaces 71a, 72a and 73a which are in contact with the guide posts 62 and 62 ', respectively.

A plurality of guide protrusions 14 inserted into the guide groove 70a of the moving plate 70 are formed in the main chassis 10 so as to be extended do.

A driving motor M is mounted on the inner surface of the main chassis 10 on which a gear G is pivotally supported on a rotating shaft and meshed with the gear G, And is extended to a predetermined length of the rack (R).

The unillustrated reference numeral 80 is a chucking plate that is hinged to the rear side of the main chassis 10 so that its rear end is rotatable to chuck the discs D and D 'on the turntable.

The operation of the disk guiding apparatus according to the present invention will now be described.

First, in the case of guiding the 8-cm disc D having a relatively small diameter, as shown in FIG. 1, when the disc D is initially inserted, the front side of the first guider pair 20, Is inserted in sliding contact with the first support posts (21, 31) protruding from the end portions. At this time, since the initial positions of the first support posts 21, 31 of the first guider pair 20, 30 are kept at substantially the same distance as the outer diameter of the 8 cm disk D, the disk D is smoothly moved to the main chassis 10 and contacted with the second support posts 41, 51 of the second guider pair 40, 50.

At this time, the second guider pair (40, 50) having the second support posts (41, 51) is kept in the locked state so as not to be further rotated by the lock-kings end, that is, the stoppers (60, 60 '). That is, the disk D is locked by the engagement between the stoppers 60 and 61 'and the second support posts 41 and 51 and the elastic force of the second and third springs S' and S ' The forwarding is not performed and the loading is completed.

On the other hand, in such a state, when a disk player is applied to an automobile or the like, a very severe flow is generated, and a floating margin for preventing influence of disturbance or the like caused by such a flow must be ensured, The disc D must be released from the state in which it is pressed and supported by the first and second support posts 21, 31, 41,

In this way, the pressing force is released by the pressing force releasing means, and the moving plate 70 is advanced and conveyed toward the back side through the guiding means. That is, when the moving plate 70 is advanced and conveyed through the mutual action of the drive motor M, the gear G and the rack R provided on the inner surface of one side of the moving plate 70, A plurality of guide grooves 70a formed in the longitudinal direction on the upper surface thereof are conveyed along the projections 14 protruding from the main chassis 10. [ 2, the engaging surfaces 72a of the second releasing pieces 72 provided on the inner and opposite surfaces of the moving plate 70 are engaged with the auxiliary guide posts 62 and 62 'on the stoppers 60 and 60' And presses it in the outward direction. The locking state between the engagement surfaces 61 and 61 'of the stoppers 60 and 60' and the second support posts 41 and 51 of the second pair of guiders 40 and 50 is released, The guide grooves 20 and 30 are opened outward by the engagement grooves 20a and 30a to which the auxiliary guide posts 62 and 62 'are coupled.

When the moving plate 70 is further advanced toward the rear side in this state, the engaging surface 73a of the third releasing piece 73 provided on the inner and opposite surfaces of the moving plate 70, as shown in FIG. 3, The second support posts 41 and 51 of the second guider pair 40 and 50 are pressed outwardly so that the pressurized state between the second support posts 41 and 51 and the disc D is released .

Therefore, the disk D is easily chucked to the turntable yarn through the chucking plate 80 and the recording / reproducing is performed through the pickup unit.

The process of guiding the 12 cm disc D 'will be described as follows.

When the disc D 'is initially inserted, the outer peripheral surface of the rear surface of the disc D' presses the first support posts 21 and 31 of the first guider pair 20 and 30 outwardly, The first guider pair 20 and 30 are mutually engaged and opened outward by sliding the guide post 22 outward along the first guide slot 11. At this time, the locking state between the stoppers 60 and 60 'and the second guider pair 40 and 50 is released by the first guider pair 20 and 30 being opened outward. That is, as the first guider pair 20, 30 spreads outward, the auxiliary guide posts 62, 62 'of the stoppers 60, 60' inserted into the engagement grooves 20a, 30a are simultaneously transported outward The stoppers 60 and 60 'are also opened outward to release the locking state between the engagement surfaces 61 and 61' and the second support posts 41 and 51. Thus, the second guider pair (40, 50) is in a rotatable state.

4, the rear side of the disc D 'is moved to the second support post (not shown) of the second guider pair 40, 50 so that the disc D' is further advanced toward the rear side in this state Whereby the second guider pair 40 and 50 is pulled outward by sliding the second support post 41 on one side along the second guide slot 12 And eventually the second support posts 41, 51 are brought into contact with the inner surface of the moving plate 70, whereby further rotation is inhibited.

That is, loading of the disk D 'is completed. On the other hand, in this state, since the disc D 'is in a state of being pressed and supported by the second support posts 41 and 51, the pressing force must be released. The moving operation of the driving motor M and the gear G and the rack R provided on the inner surface of one side of the moving plate 70 can be performed by the guiding means A plurality of guide grooves 70a formed in the longitudinal direction on the upper surface of the moving plate 70 are conveyed along the protrusions 14 protruding from the main chassis 10.

At this time, when the movie plate 70 advances forward to some extent, the gap between the inner surface of the moving plate 70 and the first release piece 71, particularly the gap between the second guider pair 40, The engaging operation with the moving plate 70 is released and then the moving plate 70 is advanced and conveyed so that the holding posts 41, The second guider pair 40, 50 is opened further outward by the second guider 71a pressing the second support posts 41, 51 to the space of the gap. 5, the contact state between the second support posts 41, 51 and the disc D 'is released, so that the disc D' is seated on the turntable through the chucking plate 80, The recording / reproducing operation is performed through the pickup unit which is not connected.

When the disc D 'is unloaded in this state, the first and second guider pairs 20, 30, 40 and 50 and the stoppers 60 and 60' , S ', S ") in the initial state shown in Fig.

As described above, according to the disk guiding apparatus of the optical disk player of the present invention, guiding of the disk of 8 cm / 12 cm can be easily performed, and it can be positioned accurately on the center of the turntable. Even if the disc is eccentrically inserted, it can be corrected by correcting it, and the center of the disc can be guided on the turntable. Therefore, the reliability of the optical disc player employing the same is further improved.

Claims (4)

In order to selectively guide the 8 cm / 12 cm disc, at least one of the front and rear sides of the disc guiding device of the optical disc player is provided with a rear side with respect to the guide direction of the discs D and D ' A main chassis 10 having first and second guide slots 11 and 12 gradually inclined toward the main chassis 10; The first support posts (21, 31) are formed on the main chassis (10) so as to be symmetrically symmetrical with respect to each other in the longitudinal direction. And a pair of first guider pairs 20 and 30 having rectangular engaging grooves 20a and 30a formed on the rear side thereof; A guide post 22 extended from one side of the first guider 20 corresponding to the first guide slot 11 of the main chassis 10 and slid along the first guide slots 11, ; And a pair of second support posts (41, 51) are formed at the front side end portion of each of the first and second guider pairs (20, 30) 2 support post 41 includes a second guider pair 40, 50 slidably mounted along the second guide slot 12 of the main chassis 10; A locking means for locking the 8cm disc (D) to limit its loading position, and releasing locking when the 12cm disc (D ') is inserted; A chucking plate (80) hingedly coupled to the rear surface of the main chassis (10) at a rear end thereof for chucking the disc (D, D ') on the turntable; A first spring S which is coupled between the rear ends of the pair of first guiders 20 and 30 so as to elastically support the pair of first guiders 20 and 30 in the inward direction; The front end of the second guider pair 40 and 50 and the opposite ends of the second guider pair 40 and 50 are engaged with each other on the main chassis 10 so as to elastically support the second guider pair 40 and 50 toward the front side. ')and; The first and second support posts 21, 31, 41 and 51 and the discs D and D 'are in contact with each other for releasing the contact state between the first and second support posts 21, 31, 41 and 51 with the optical discs D and D' A pressing force releasing means; Wherein the optical disc player includes a plurality of optical discs. 2. The apparatus according to claim 1, wherein the locking means comprises: a main chassis (10) having a center side on one side thereof pivotably hinged to each other, both ends of the main chassis (10) (60, 60 ') having engagement surfaces (61, 61') for selectively contacting the second support posts (41, 51) of the second guider pair (40, 50); An auxiliary guide post (62, 62 ') extending from the outer end of the stopper (60, 60') and slidably inserted into the rectangular engaging groove (20a, 30a) of the first guider pair (20, 30) )Wow; And a third spring S 'which is coupled to the outer ends of the stoppers 60 and 60' and both ends of the main chassis 10 to elastically support the stoppers 60 and 60 'in the inward direction, Player's disk guiding device. 2. The apparatus according to claim 1, wherein the pressing force releasing means is provided slidably along inner and outer sides of the main chassis (10) by guiding means, and a plurality of guide grooves (70a) are formed on the upper surface thereof in the longitudinal direction A moving plate (70); And engaging faces 71a and 71b which are respectively formed on both inner surfaces of the moving plate 70 and contact the first and second support posts 21, 31, 41 and 51 and the auxiliary guide posts 62 and 62 ' First, second and third releasing pieces (71, 72, 73) having first, second and third retaining portions (72a, 73a); Wherein the optical disc player is a disc player. The apparatus of claim 3, wherein the guiding means comprises: a plurality of guide protrusions (14) protruding from the main chassis (10) and inserted into the guide grooves (70a) of the moving plate (70); A drive motor M positioned on an inner surface of the main chassis 10 and having a gear G supported on its rotation axis; A rack (R) extending in the longitudinal direction from the inner surface of one side of the moving plate (70) so as to engage with the gear (G) of the driving motor (M); Wherein the optical disc player is a disc player. ※ Note: It is disclosed by the contents of the first application.