KR100268260B1 - Loading and unloading apparatus of an optical disk - Google Patents

Abstract

PURPOSE: A loading and unloading device for an optical disk is provided to perform insertion of a tray having an optical disk and elevation of a deck base for loading/unloading the optical disk by using one loading motor and an interlocking frame. CONSTITUTION: A tray is inserted to a case(50) while mounting optical disks having different sizes. A driving unit is installed on a front direction of the case for supplying driving force of loading/unloading the optical disks. An interlocking unit reciprocates to an insertion direction of the tray and a perpendicular direction thereof. A deck base elevating unit reciprocates to the insertion direction of the tray while elevating a deck base including an optical pickup. A chucking unit is installed on a cover plate of the case for chucking the optical disk mounted on a turntable of the optical pickup. A rack is integrally formed with the tray for horizontally moving the tray by being engaged with the driving unit.

Description

Device for loading and unloading optical discs

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for loading and unloading optical disks, and more particularly, to minimize the number of parts for loading and / or unloading a tray on which an optical disk is seated, in particular an optical disk. A device for loading and unloading an optical disc capable of lightening, thinning, simplifying and miniaturizing a recording and reproducing apparatus.

In general, an optical disc D used in a recording / reproducing apparatus such as a digital versatile disc (DVD) is a recording medium for recording information on or playing back information recorded on a concentric track. The information recorded on the disc is realized by an optical disc loading mechanism for loading and unloading an optical disc and an optical pickup device for reproducing information by radiating a semiconductor laser beam to a pit of a recording surface.

The optical disk loading mechanism includes a tray on which the optical disk is mounted; A case in which the tray is releasably mounted; A drive unit installed inside the case to move the tray horizontally; And a plurality of gear groups engaged with the loading part for closely contacting the optical disk to the upper turntable of the deck base to lower the tray in the vertical direction.

In addition, the optical pickup device is installed on the deck base so that the staff can move back and forth, the deck base is equipped with a plurality of gear trains are interlocked by the driving force of the transfer motor and the transfer motor for transferring the optical pickup device radius of the optical disk The information is recorded on the recording surface of the optical disc or the recorded information is reproduced while the optical pickup apparatus is transported in the radial direction.

However, the number of parts and workmanship as installed in the case is a drive unit for retracting and / or withdrawing the tray as described above, a loading unit for loading and / or unloading an optical disc, and a plurality of gear groups engaged therewith. As a result, the assembly and structure of the component parts are complicated.

In addition, there is a problem in that the space inside the case cannot be effectively used, so that it cannot adequately cope with the trend of requiring thinning of the optical disk recording / reproducing apparatus.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to draw and / or retract a tray on which an optical disk is mounted, and to lift and lower a deck base to load / unload an optical disk. It can be executed by one loading motor and frame linked with it, which can reduce the number of parts and workmanship to a minimum, and also reduce the cost, especially loading and unloading optical discs that can reduce the size of the case. To provide a loading device.

1 is an exploded perspective view showing an optical disk loading and unloading apparatus according to the present invention;

Figure 2 is a bottom view showing a tray on which an optical disk is seated in the loading and unloading apparatus according to the present invention,

3 is a view showing an optical disk loading and unloading apparatus according to the present invention, a plan view excluding the tray,

Figure 4 is an exploded perspective view showing an enlarged driving means, interlocking means and the deck base lifting means for raising and lowering the deck base in accordance with the present invention,

Figure 5 is a side cross-sectional view showing a state in which the tray is inserted into the case in the loading and unloading apparatus according to the present invention,

Figure 6 is a plan view showing the operating state of the elevating means when the deck base of FIG.

7 is a side cross-sectional view showing a state in which the deck base is raised and lowered,

8 is a side sectional view showing a state in which a tray is taken out of the apparatus for loading and unloading an optical disc according to the present invention.

Explanation of symbols on the main parts of the drawings

10 tray 12,84 rack

12a: Feed groove 12b: Guide groove

20: guide portion 22: holder

24: compression springs 30, 34, 38: first, second and third locking parts

50: Case 52: Deck Base

54,56: First and second locking release projections 58: Spindle motor

60: turntable 62: optical pickup device

70: loading motor 72: coupling

74: worm shaft 76: worm gear

78: transmission gear 80: slide member

80a: stairwell 82: protrusion

90 frame 90a: guide ball

92,94: first and second pole 96: wing portion

100: pull-push member 102: fixing piece

102a: slope 102b: locking jaw

In order to achieve the above object, the present invention is the case that the opening is formed in the front; A tray to be pulled into / out of the case and to selectively seat optical disks of different sizes; Driving means installed in front of the case and providing a driving force for loading / unloading the optical disk; Interlocking means for reciprocating in the direction of retraction / retraction of the tray in association with the driving means; Deck base lifting means for lifting up and down the deck base on which the optical pickup device is mounted at a predetermined angle while linearly reciprocating in the draw / pull direction of the tray by the interlocking means; And chucking means mounted on the cover plate of the case, chucking the optical disc seated on the turntable of the optical pickup apparatus lifted by the deck base lifting means, and loading and unloading of the optical disc. Provide a loading device.

According to a preferred embodiment of the present invention, the driving means includes a loading motor in which a rotating shaft is press-fitted, a worm shaft coupled with the rotating shaft and a coupling, a worm gear engaged with the worm shaft, and an worm gear meshed with the worm gear. It has a transmission gear for moving.

Interlocking means according to a preferred embodiment of the present invention is provided with a slide member is formed so as to engage a portion of the deck base lifting means and the rack engaged with the transmission gear having a projection portion is inserted into the guide groove of the tray. do.

Deck base lifting means according to a preferred embodiment of the present invention is a first pole and a second pole portion is inserted into the step hole of the slide member, and the frame reciprocating linearly reciprocating in the direction perpendicular to the slide member when the slide member, and Guide holes guided by the worm gears and the transmission gears respectively disposed on the upper surface of the frame, and wing portions extending from both sides of the frame, respectively, are provided with pull-push members for pulling or rolling the deck base.

Hereinafter, preferred embodiments of the optical disk loading and unloading apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 illustrate an apparatus for loading and unloading an optical disk according to the present invention, wherein the apparatus for loading and unloading an optical disk includes a tray 10 on which an optical disk D is mounted, and the tray ( 10) a case 50 for drawing out and / or drawing in, a drive means installed in front of the case 50 for loading / unloading an optical disk, an interlocking means interlocking with the driving means, and a straight line by the interlocking means. The reciprocating conveyance is composed of a deck base lifting means for raising and lowering the deck base 52 at a predetermined angle, and chucking means coupled to the upper case 50 to chuck the optical disk on the turntable.

The bottom surface of the tray 10 is small and concentric with the first seating groove 10a and the first seating groove 10a, for example, to allow the optical disk having a diameter of 12 cm and 8 cm to be combined. A second seating groove 10b having a diameter is formed, respectively, and the first and second insertion holes 10c and 10d and the guide hole 10e are formed at the front and the rear of the bottom surface, respectively. 10e) The guide part 20 having a predetermined height with respect to the bottom surface of the tray 10 is integrally injection molded.

A holder 22 having a guide bar 22a is mounted to the guide portion 20 so as to be inserted into both ends of the guide hole 10e so as to be movable forward and backward, and moved to the rear side at one end of the guide bar 22a. The compression spring 24 for returning the holder 22 to the initial state is connected, and the case 50 is vertically installed in the holder 22 and the first insertion hole 10c of the tray 10 to use the tray. A first locking portion 30 and a pair of second locking portions 34 are provided to lock the 12 cm optical disk D seated on 10 at three locations to prevent separation of the optical disk.

The first locking portion 30 is a locking piece 32 rotatably hinged on the upper surface of the holder 22, the second locking portion 34 is hinged in the first insertion hole (10c) 1 lever 36 and the locking projection (36a) protruding on one side end thereof and the locking groove (36b) is formed on the opposite side and the locking projection (14b) protruding inwardly of the first insertion hole (10c) is fitted. do.

A third locking portion 38 is provided in the second insertion hole 10b to lock the optical disk D 'having a diameter of 8 cm at two locations to prevent separation thereof. The third locking portion 38 is provided. ) Is a return spring for returning the second lever 40 by one end connected to the bottom of the second lever 40 and the second lever 40 and the tray 10 which are hinged to the second insertion hole 10d. (42). And, the second lever 40 is coupled to the same height as the bottom surface of the second seating groove (10b) so that interference does not continue when the optical disk (D) of 12cm seated on the tray 10 is loaded. do.

The bottom surface of the tray 10 is engaged with the driving means described later, as shown in FIG. 2, and the rack 12 for horizontally moving the tray 10 is integrally formed, and the tray 10 is guided to one side of the rack 12. At the same time, a feed groove 12a and a guide groove 12b formed therein are formed in a longitudinal direction so as to transfer the interlocking means to be described later in one direction.

On the upper surface of the deck base 52, the first and second levers 36 and 40 which selectively lock the optical disks D (D ') having a diameter of 12 cm or 8 cm may be released. And the second unlocking protrusions 54 and 56 are fixed, and the length of the second unlocking protrusions 56 is the second lever 40 when the optical disc D of 12 cm is seated on the tray 10. Shorter than the length of the first unlocking projection 54 so that one end does not touch the surface of the optical disk (D).

A spindle motor 58 is provided between the first unlocking protrusions 54 to rotate the optical disk in a linear velocity manner, and the non-magnetic portion of the optical disk is in close contact with the rotating shaft of the spindle motor 58. The turntable 60 is coupled, and on one side of the turntable 60, an optical pickup device 62 for recording information by radiating a semiconductor laser beam onto a recording surface of the optical disk or reproducing the recorded information is installed to be linearly reciprocated. do.

The drive means is installed in the case 50 and the worm shaft 74 and the worm coupled with the loading motor 70, the rotating shaft 70a and the coupling shaft 72 coupled to the rotating shaft 70a to provide a driving force. Worm gear 76 made up of first and second gears 76a and 76b meshed with shaft 74 to transmit a driving force, and transmission gear 78 meshed with worm gear 76 to transfer interlocking means. And a transmission gear 78 is a first gear 78a engaged with the second gear 76b of the worm gear 76 and a second gear 78b engaged with the rack 12 of the tray 10. ).

As shown in FIG. 4, the interlocking means includes a protrusion 84 and a rack 84 engaged with the transmission gear 78 so as to be partially inserted into the guide groove 12b of the tray 10, and a pair of stairs. Ball 80a is provided with a slide member 80 is formed.

The deck base lifting means includes first and second poles 92 and 94 inserted into the step holes 80a of the slide member 80, and the slide member 80 is perpendicular to the retracting direction of the tray 10. The frame 90 is linearly reciprocated in the Y-axis direction of the tray 10, the worm gear 76 and the transfer gear 78 disposed on the upper surface of the frame 90 by reciprocating in the X-axis direction. A pull-push for protruding obliquely upward from the guide hole 90a guided by the guide hole and the wing 96 extending from both sides of the frame 90 to pull or push the deck base 52. A member 100 is provided.

The pull-push member 100 is formed on each of the fixing piece 102 and the inclined surface 102a having the same inclined surface 102a on both sides thereof so as to be inserted into the insertion hole 52a of the deck base 52, thereby loading or loading the optical disk. When the unloading is completed, it becomes a locking step 102b for limiting the rise and fall of the deck base 52.

The chucking means is typically provided with a rocker 106 fixed by caulking of the cover plate 104 and a clamper 108 coupled to one end thereof to chuck the optical disk.

The operation of the optical disk loading and unloading apparatus according to the present invention configured as described above will be described in detail with reference to FIGS. 5 to 8.

In the present invention, the operation of vertically using a case for loading / unloading an optical disk will be described.

Ejecting buttons (not shown) mounted on the front of the case 50 installed vertically for recording information on the recording surfaces of optical disks D (D ') having different sizes or for reproducing information from the optical disks. When pressed, the tray 10 is drawn out to the front of the case 50 by the rotation of the rotation shaft 70a of the loading motor 70 and the worm shaft 74 coupled to the coupling 72.

That is, as the first gear 76a of the worm shaft 74 and the worm gear 76 are rotated in engagement with each other, the second gear 78b of the transmission gear 78 engaged with the second gear 76b rotates, thereby disagreeing. It is horizontally moved by the rack 12 engaged with the first gear 78a integrally mounted on the upper surface. At this time, the guide groove 12b formed on the bottom surface of the tray 10 moves along the protrusion 82 of the slide member 80, and the second gear 78b of the transmission gear 78 is the slide member 80. It is rotated without engaging the rack 84 of.

Thereafter, any one of the optical disks D (D ') having a diameter of 12 cm or 8 cm on the first or second seating grooves 10a and 10b of the drawn out tray 10. While seating, lock. That is, when the optical disk D of 12 cm is seated on the first seating groove 10a, the locking piece 32 is rotated so that the tip thereof protrudes toward the front of the holder 22, and a pair of first levers ( The artificial disk 36 is artificially operated to be inclined with respect to the bottom surface of the tray 10, and then the optical disk D is positioned below the locking piece 32 and the first lever 36.

When the first lever 36 is pressed in the state where the optical disk D of 12 cm is positioned in this way, the locking projection 14 projecting inwardly of the first insertion hole 10c is caught by the locking groove 36b. The tip portion of the projection 36a and the locking piece 32 locks the optical disk D at three locations. When the optical disk D 'of 8 cm is seated on the second seating groove 10b, the optical disk D' is seated while artificially pulling the second lever 40 as described above.

At this time, the second lever 40 is returned to the initial position by the restoring force of the return spring 42 connected to the bottom surface of the second lever 40 and the tray 10, thereby locking the optical disc D 'at two positions. Accordingly, the removal of the optical disks D and D 'may be prevented while the tray 10 is introduced into the case 50.

On the other hand, when the ejecting button is pressed again to load the optical disk seated on the tray 10, the first motor 78a of the transmission gear 78 engaged with the loading motor 70 rotates at the same time as the loading motor 70 rotates in reverse. While introducing the tray 10 into the case 50 as shown in FIG.

Then, the transfer gear 78 from the time when the tray 10 is completely drawn into the case 50, that is, when the projection 82 of the slide member 80 is moved to the feed groove 12a having a gentle curve. Of the second gear 78b is engaged with the rack 84 formed on one surface of the slide member 80 to start the transfer in the X-axis direction.

That is, as shown in FIG. 6, when the slide member 80 is transferred, the first and second poles 92 and 94 protruding from the upper surface of the frame 90 are stepped holes 80a of the slide member 80. Moving along, and at the same time as the frame 90 is moved straight forward, the fixing piece 102 inserted into the insertion hole (52a) of the deck base 52 is pulled deck base (52).

Deck base 52 is guided by the axis of the worm gear 76 and the transmission gear 78 penetrated into the guide hole (90a) of the frame 90, respectively, as shown in Figure 7 the locking step of the inclined surface (102a) ( The nonmagnetic portion of the optical disk is brought into close contact with the turntable 60 while lifting upwards along the inclined surface 102a of the fixing piece 102 until it is caught by 102b). At this time, while the clamper 108 forming the chucking means is lowered on the upper surface of the optical disk, the nonmagnetic portion of the optical disk is firmly adhered to the upper surface of the turntable 60 to complete the chucking, and at the same time, the upper surface of the deck base 52 Portions of the fixed first and second locking release protrusions 54 and 56 are inserted into the first insertion hole 10c and the second insertion hole 10d, respectively, so that the first and second levers 36 and 40 are respectively provided. Slide to unlock the optical disc.

Here, when the second lever 40 is pushed by the second locking release protrusion 56 as it is mounted on the same surface as the bottom surface of the second seating groove 10b, one end of the second lever 40 is first made. The contact with the surface of the optical disc D of 12 cm is prevented without departing from the height difference of the second seating groove 10d with respect to the first seating groove 10c.

When the loading of the optical disc is completed as described above, the optical pickup device 62 installed on the deck base 52 records information on the recording surface of the optical disc while linearly reciprocating the radial direction of the optical disc rotating at linear speed. Or to reproduce information from an optical disc.

On the other hand, when unloading the optical disk seated on the tray 10, as shown in Figure 8 and the worm shaft 74 coupled to the loading motor 70 and its rotating shaft 70a and the coupling 72 and When the worm gear 76 and the transmission gear 78 engaged therewith are rotated in the opposite directions, respectively, the slide member 80 is moved in the X-axis direction, and the frame 90 is moved forward and positioned in an initial state. The base 52 is lowered by the pushing force of the pull-push member 100 and the restoring force of the elastic plate (not shown) which fixes the deck base 52 to the case 50, and closely adheres to the nonmagnetic portion of the optical disk. It is to separate the turntable 60.

As described above, according to the optical disk loading and unloading apparatus according to the present invention, the operation of taking out and / or retracting the tray on which the optical disk is mounted and the lifting and lowering operation of the deck base for loading / unloading the optical disk are performed. It can be executed by the drive means and the frame interlocked with it, thereby reducing the number of parts and labor can be minimized, as well as the cost can be reduced, in particular the size of the case can be reduced.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (6)

A case having an opening formed on the front surface thereof; A tray to be pulled into / out of the case and to selectively seat optical disks of different sizes; Driving means installed in front of the case and providing a driving force for loading / unloading the optical disk; Interlocking means reciprocating in a direction perpendicular to a drawing / drawing direction of the tray in association with the driving means; Deck base lifting means for lifting up and down the deck base on which the optical pickup device is mounted at a predetermined angle while linearly reciprocating in the draw / pull direction of the tray by the interlocking means; And a chucking means mounted on a cover plate of the case, for chucking the optical disc seated on the turntable of the optical pickup apparatus lifted by the deck base lifting means, and loading and unloading of the optical disc. Device. The rack according to claim 1, wherein a rack engaged with the driving means and horizontally moving the tray is integrally formed on the bottom surface of the tray, so as to guide the tray adjacent to the rack and to reciprocate the interlocking means. Apparatus for loading and unloading an optical disc, characterized in that the transfer groove and the guide groove in communication therewith is formed. According to claim 1, wherein the driving means is a loading motor with a rotary shaft is press-fitted, the worm shaft coupled to the rotary shaft and the coupling, the worm gear meshed with the worm shaft, the worm gear is meshed with the worm gear to the interlocking means Apparatus for loading and unloading an optical disc comprising a transfer gear for moving. According to claim 1, wherein the linkage means is a rack engaged with the transmission gear having a projection portion is inserted into the guide groove of the tray, and a slide member formed with a stepped hole so that a portion of the deck base lifting means is inserted Apparatus for loading and unloading optical discs, characterized in that. The frame of claim 1, wherein the deck base lifting means comprises: first and second poles, a part of which is inserted into a step hole of the slide member, a frame which is reciprocally moved in a direction perpendicular to the slide member when the slide member is reciprocated; Guide balls guided by the worm gears and the transmitters respectively disposed on an upper surface of the guide, and wing portions connected to both sides of the frame, respectively, are provided as pull-push members for pulling or pushing the deck base. Apparatus for loading and unloading optical discs. The deck base according to claim 5, wherein the pull-push member is formed on both sides thereof with the same inclined surface so as to be inserted into the insertion hole of the deck base, and is formed on the inclined surface, respectively, when the loading or unloading of the optical disk is completed. Apparatus for loading and unloading an optical disc, characterized in that it has a locking step for limiting the rise and fall of the.

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