KR20070082502A - Optical disc device and control method for the same - Google Patents

Abstract

An optical disc device and a control method therefor are provided to have a compact structure in which the number of components is reduced, be stable in vibration or impact, automatize the insertion or ejection of a disc by a slot-in type, load discs of various sizes having a large diameter and a small diameter, and limit the entire thickness within a permitted value. A main unit rotates a turntable in which a disc is chucked, has an optical pickup, and records/reproduces data in/from the disc. A lever member guides a side of the disc, loads the disc to a position having the same center as the turntable, and unloads the disc in the inverse direction. A driving source(300) operates the lever member. The lever member is operated to have inter-different loci according to a diameter of the disc to be capable of loading/unloading discs of various diameters.

Description

Optical disc device and control method for the same

1 is a perspective view showing the appearance of the optical device according to the invention.

2 is a perspective view showing a state in which a large diameter disk starts to push the guide lever and the loading lever in the optical device according to the present invention.

3 is a perspective view showing a state in which a large-diameter disk starts to contact the eject lever after moving the guide lever and the loading lever in the optical device according to the present invention;

4 is a perspective view showing a state before a large diameter disk is loaded and then chucked in the optical device according to the present invention;

5 is a perspective view showing a state in which the large-diameter disk shown in FIG. 4 is chucked to the turntable and the lever member is escaped.

6 is a perspective view showing a state in which the small diameter disk is chucked to the turntable and the lever member is escaped in the optical device according to the present invention.

Figure 7 is a rear view showing a state in which the locking means and the lever member according to the present invention is locked.

FIG. 8 is a rear view showing a state in which the locking means and the lever member shown in FIG. 7 are unlocked by being pushed by a large diameter disk. FIG.

9 is a rear view illustrating the correlation between the locking means and the small diameter disk according to the present invention.

FIG. 10 is an explanatory view showing an enlarged view of the first and second locking units shown in FIG. 8;

11 is a rear view showing a standby state of the sub slider according to the present invention;

12 is a rear view showing the state of the sub slider when the large diameter disk is chucked in the present invention;

Fig. 13 is a rear view showing the state of the sub slider when the small diameter disk is chucked in the present invention.

14 is a flowchart of a control method of an optical device according to the present invention.

Fig. 15 is a plan view of the optical device at the instant of initiating manual insertion of a large diameter disk for explaining the operation of the protection means of the present invention.

Fig. 16 is a plan view of the optical device showing a state in which a large diameter disk is manually inserted to a position where the operation of the driving means is turned on.

FIG. 17 is an enlarged view of a portion E of FIG. 16.

18 is an enlarged view showing a state in which loads acting in the loading direction of the disk by the protection means are absorbed;

<Explanation of symbols for main parts of the drawings>

10 ... Slot 20 ... Bezel

30 ... Eject button 40 ... Indication lamp

50 ... Unchucking rod 60 ... Unchucking rod hole

100 ... main unit 110 ... turntable

120 ... spindle motor 130 ... optical pickup

200 ... Lever member 210 ... Guide lever

211 ... first secondary link 212 ... second secondary link

213 ... First secondary link hinge 214 ... Secondary secondary link hinge

215 ... guide lever first hinge 216 ... guide lever second hinge

Guide lever spring 219 Disc guide surface

220 first boss 230 eject lever

235 ... disc contact of eject lever 250 ... loading lever

251 ... first loading lever 252 ... second loading lever

253 ... first loading lever hinge 254 ... second loading lever hinge

255 ... disc contact of the loading lever 256 ... loading cam boss

260 ... the second boss 300 ... the driver

301 ... warm gear 305 ... gear train

350 ... main slider 355 ... rack

351,377 ... Connection link cam 361 ... 1st loading cam

362 ... Second Loading Cam 370 ... Sub Slider

371 ... first guide lever cover 372 ... second guide lever cover

374 ... guide lever control part 375 ... first eject lever escape part

376 ... 2nd eject lever escape part 378 ... guide lever regulating link cam

379 ... chucking / unchucking guide 380 ... guide lever regulation link

381 ... guide lever regulatory link boss 390 ... connection link

391 Link Link Boss 410 ... 1st Link

411 ... first cam 412 ... first hinge

415 ... first locking part 416 ... first loading part

420 ... 2nd Link 421 ... 2nd Cam

422 ... second hinge 425 ... second locking part

426 ... 2nd loading section 440 ... shutter

450 ... guide lever switch 460 ... drive switch

500 ... Frame 710 ... Eject lever spring

720 ... Absorption Spring 730 ... Eject Lever Detection Switch

740 ... Pressure Fleet Home 750 ... Pressure

DL ... large diameter disk DS ... small diameter disk

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device and a control method thereof, and more particularly, to an optical device and a method of controlling the same, in which an optical disk can be inserted or taken out through a slot.

There are various types of information storage media for storing information, such as magnetic disks such as floppy disks and hard disks, magnetic tapes, semiconductor memory chips such as ROM or RAM, and optical disks for recording data using lasers.

Among such information storage media, an optical disk (hereinafter referred to as a disk) is rapidly increasing information storage capacity due to the development of related technologies, and its price is also relatively inexpensive, so it is widely used. Disks are classified into compact disks (CDs) and digital versatile disks (DVDs) according to information storage capacity. Discs that can be recorded, erased, and played back include 650MB CD-R, CD-RW, 4.7GB DVD-R, DVD + R, DVD-RW, and DVD + RW. Furthermore, HD-DVD and Blu-ray discs with recording capacity of 20GB or more are being developed.

Recently, there has been an attempt to use a disk of an optical device as an information storage medium of a portable electronic device such as a notebook or a camcorder. However, there are various problems in using the conventional optical device in a portable electronic device such as a camcorder. That is, the size and thickness of the device is too large to be portable, and when the conventional slim optical device is applied, insertion or ejection of a disk is inconvenient. Compared with the conventional optical device which mounts and loads the disk in a cassette or tray, the optical device of the slot-in type which can automatically insert or eject the disk through a narrow slot formed as wide as the disk width on one side of the optical device. The device is preferred.

On the other hand, conventionally developed slot-in optical device has a disadvantage that can be used only a disk (hereinafter referred to as a large diameter disk) that is substantially 12cm in diameter. However, due to the trend toward higher density of disks, the demand for optical device devices that can correspond to disks whose diameters are substantially 8 cm (hereinafter, referred to as small diameter disks) is rapidly increasing. Here, as the standard specifications of the disc change, the diameters of the large diameter disc and the small diameter disc may vary. In addition, the optical device mounted on a portable information device such as a notebook computer is slim, and its overall thickness is often limited to less than an allowable value. Here, the allowable value is 12.7mm, but can be changed according to the standard specification change of the optical device. In a slim optical device device capable of loading large diameter disks as well as small diameter disks in a slot-in manner and where the overall thickness is limited within tolerances, the structure for loading and chucking the disks must be compactly arranged. If the structure for loading and chucking the disk is excessively light and short, it becomes vulnerable to vibration or shock, and there is a fear that an error occurs when reading or writing information on the disk.

Until now, a slim optical device device that is stable to vibration and shock and whose overall thickness is within the allowable value has been simplified, and that a slot-in method for loading disks of various sizes having a large diameter and a small diameter has not been developed and commercialized. It is true.

The technical problem of the present invention is to improve the above-mentioned problems, and is a compact structure with a simplified number of parts, which is stable to vibration and shock, and the disk insertion or ejection is automated in a slot-in manner, and has a large diameter and a small diameter. Disclosed are an optical device and a method of controlling the same, which can load discs of various sizes and limit the overall thickness within an allowable value.

In order to achieve the above object, the optical device according to the present invention,

A main unit for rotating the turntable on which the disk is chucked, and having an optical pickup for recording / reproducing data on the disk;

A lever member for guiding the side of the disk to load the disk into a position concentric with the turntable and to unload it in the opposite direction;

Drive means for operating the lever member; Including;

The lever member is operated to have different trajectories according to the diameter of the disk, it is characterized in that the loading / unloading of the disk of various diameters.

In one embodiment, the lever member,

An eject lever for applying an elastic force in the unloading direction to the disk;

A guide lever forming a disk guide surface extending linearly along the loading direction of the disk;

A loading lever which pushes the disk and moves in the reverse direction when the disk is unloaded; It includes.

In one embodiment, the guide lever is a four-section link structure, and is operated while being substantially parallel to the loading direction of the disc.

In one embodiment, the optical device,

Locking means for locking the operation of the guide lever and the loading lever in a standby state and releasing the locking when both the guide lever and the loading lever are pushed by the disc when the disc is manually inserted into the slot; ; It characterized in that it further comprises.

In one embodiment, the locking means,

A first link having a first cam connected to a first boss provided in the guide lever and pivoted about a first hinge by a movement of the first cam;

A second link having a second cam connected to a second boss provided in the loading lever and pivoted about a second hinge by movement of the second cam; It includes.

In an embodiment, the first and second links are pivotally coupled to opposite sides of the first and second cams based on the first and second hinges.

In one embodiment, the first and second cams are provided with a first locking portion and a second locking portion, respectively, in portions of which the shape is bent, and the first locking portion restricts the first boss to lock the guide lever. And the second locking portion regulates the second boss to lock the loading lever.

In an embodiment, when the first and second links are rotated in opposite directions when the disk is manually inserted, the inflection degree of the first and second locking portions is alleviated, thereby reducing the inclination of the guide lever and the loading lever. Locking is released.

In one embodiment, the first and second cams have first and second loading portions, respectively,

The large diameter disk is loaded / unloaded as the first and second bosses are moved along the first and second loading portions, respectively, the first boss is locked and the second boss is moved along the second loading portion. Small diameter discs are loaded / unloaded.

In one embodiment, the driving means,

Drive source;

A main slider having a rack connected to the drive source and operating the lever member while being linearly moved; It includes.

In one embodiment, the main slider,

A first loading cam for moving the large diameter disk by operating the loading lever;

A second loading cam for moving the small diameter disk by operating the loading lever; It is provided.

In one embodiment, when the disc is manually inserted through the slot in the standby state, either one of the first and second loading cams is selected by a difference in the amount of movement of the loading lever that is pushed and moved by the disc.

In one embodiment, the loading lever is provided with a loading cam boss connected to any one of the first and second loading cams according to the diameter of the disc to be inserted.

In one embodiment, the first and second loading cams evacuate the loading lever from the side of the disk when the disk is chucked to the turntable.

In one embodiment, the driving means,

A reciprocating portion connected to the main slider, the guide lever escape portion for evacuating the guide lever from the side of the disc and the eject lever escape portion for evacuating the eject lever from the side of the disc when the disc is chucked to the turntable. A sub slider provided; It further includes.

In one embodiment, the sub slider,

First and second guide lever escape parts for escaping the guide lever to different positions according to the diameter of the disk;

First and second eject lever escape parts for escaping the eject lever to different positions according to the diameter of the disk; It is provided.

In one embodiment, one of the first and second guide lever escape parts is selected by a difference in the amount of movement of the guide lever pushed by the disk.

In one embodiment, one of the first and second eject lever escape parts is selected by a difference in the amount of movement of the eject lever pushed by the disk.

In one embodiment, the sub slider,

A guide lever restricting portion which regulates the movement of the guide lever when the small diameter disk is loaded to closely contact the side of the disk; It is further provided.

In one embodiment, the sub slider includes a chucking / unchucking guide for guiding the lifting and lowering of the main unit during chucking / unchucking of the disk; It is further provided.

In one embodiment, the driving means,

Regulating the movement of the guide lever when the large diameter disk is loaded, the guide lever is in close contact with the side of the disk, when the chucking of the large diameter disk is rotated by the sub-slide guide lever regulation to release the regulation link; It is further provided.

In one embodiment, the driving means comprises: a connection link connecting the main slider and the sub slider to each other; It is further provided.

In one embodiment, the main slider further comprises a connection link cam for operating the connection link.

In one embodiment, the loading lever is,

A first loading lever having one end connected to the main slider and pivoting about a first loading lever hinge;

A second loading lever pivoted about a second loading lever hinge, one end of which is pivotally connected to the first loading lever, and the other end of which is in contact with the disk side; It includes.

In one embodiment, the optical device, the shutter is moved to a position to block the slot when the loading of the disk is completed; It further includes.

In one embodiment, the shutter is operated by the main slider.

In one embodiment, the guide lever and the loading lever are elastically biased in a direction in contact with the side of the disk.

In one embodiment, the optical device includes a diameter detecting means for detecting the diameter of the disk inserted into the slot; It includes more.

In one embodiment, the diameter detecting means includes a guide lever switch that recognizes the disk as a large diameter disk when pressed in contact with the guide lever when the disk is loaded.

In one embodiment, the optical device includes a drive switch to turn on / off the operation of the drive means; Further, wherein when the disk is manually inserted into the slot when the disk is moved to the on position of the drive switch, the drive switch is turned on and the drive means is operated, when the disc unloading the disc Outside the on position, the drive switch is turned off, the operation of the drive means is stopped and the disc is unloaded by the elastic force of the eject lever.

In one embodiment, the guide lever, the eject lever and the loading lever are simultaneously moved to load / unload a large diameter disk, the guide lever is locked and the eject lever and the loading lever are moved and the small diameter disk is moved. Load / unload

In one embodiment, the guide lever and the loading lever is characterized in that the separation distance of the portion adjacent to the slot in the standby state is larger than the diameter of the small diameter disk and smaller than the diameter of the large diameter disk.

In one embodiment, the overall thickness of the optical device is within an allowable value and can be mounted to a notebook computer.

On the other hand, the control method of the optical device according to the present invention,

A main unit for rotating the turntable on which the disk is chucked, and having an optical pickup for recording / reproducing data on the disk;

A lever member inserted into a slot and corresponding to a disc having a diameter of various sizes, the lever member for guiding the side of the disc to load the disc into a position concentric with the turntable and to unload it in the opposite direction;

Drive means for operating the lever member;

Diameter sensing means for sensing the diameter of the disk inserted into the slot; In the control method of an optical device comprising:

(a) determining the diameter of the disk by the diameter sensing means;

(b) loading the disc into a position concentric with the turntable while the lever member is moved in different trajectories according to the diameter of the disc;

(c) chucking the disk to the turntable;

(d) escaping from the side of the disk while the lever member is moved to a different position according to the diameter of the disk;

(e) recording / reproducing data after loading, chucking, and evacuation of the disc; Characterized in that it comprises a.

Hereinafter, with reference to the accompanying drawings will be described embodiments of the present invention; The same reference numerals denote the same elements, and firstly, various modifications are possible within the scope of the same idea without being limited to those illustrated in the accompanying drawings.

1 is a perspective view showing the appearance of the optical device according to the present invention. A bezel 20 is provided on the front side of the optical device. The slot 10 provided in the bezel 20 serves as a passage through which the disc is inserted and taken out. Pressing the eject button 30 provided on the bezel 20 unloads the disk that has been loaded into the optical device. The operating state of the optical device is indicated by the indicator lamp 40. In one embodiment, the optical device according to the present invention is a slim optical device that can be mounted on a notebook computer with a total thickness t within an allowable value (for example, 12.7 mm). The lever member 200 and the driving means according to the present invention are advantageous in the slimming of the optical device because the size thereof is compact and the number of parts is simplified.

2 is a perspective view showing a state in which the large-diameter disk DL starts to push the guide lever 210 and the loading lever 250 in the optical device according to the present invention. Referring to this, the main unit 100, the lever member 200 is shown.

The main unit 100 includes a turntable 110 for seating a disk, a spindle motor 120 for rotating the turntable 110, an optical pickup 130 for recording and reproducing data by irradiating light onto the disk, and an optical pickup 130. ) Is provided with a feeding motor (not shown) for moving the disc in the tracking direction of the disc.

The lever member 200 guides the inserted disk through the slot 10 to load and then chuck the disk to a position concentric with the turntable 110, and unloads the disk and unloads it in the reverse direction. The driving means to be described later operates the lever member 200 to load / unload the disk, and the main unit 100 is lifted / lowed to chuck / unchuck the disk to the turntable 110.

The lever member 200 includes an eject lever 230, a guide lever 210, and a loading lever 250. The eject lever 230 provides a force necessary for the unloading of the disk by applying elastic force to the disk in the unloading direction (the negative direction of the y-axis).

The guide lever 210 forms a disc guide surface 219 extending in a straight line along the disc loading direction (y-axis positive direction). Guide lever 210 is a four-section link structure is operated while maintaining a state substantially parallel to the loading direction of the disk. This is to ensure stable loading / unloading performance of the disk.

In order to maintain a constant direction of the guide lever 210, the guide lever 210, the first auxiliary link 211, the second auxiliary link 212 is preferably moved in a parallelogram. One end of the first auxiliary link 211 is rotated around the first auxiliary link hinge 213 provided on the optical device device side, and the other end thereof is connected to the guide lever first hinge 215 provided on the guide lever 210 side. Pivoted. Similarly, one end of the second auxiliary link 212 is rotated around the second auxiliary link hinge 214 provided on the photonic device side, and the other end thereof is the guide lever second hinge provided on the guide lever 210 side. 216 is pivotally coupled. Preferably, the length of the first auxiliary link 211 and the second auxiliary link 212 is the same.

The loading lever 250 is provided at a position adjacent to the slot 10 and pushes the disk to load the disk, and moves the disk in the opposite direction when the disk is unloaded to guide the disk in the slot 10 direction. The guide lever 210 and the loading lever 250 operated by the plurality of cams are preferably elastically biased in one direction for accurate position control. In one embodiment, since the elastic force of the guide lever spring (see FIG. 7, 218) acts on the first auxiliary link 211 in contact with the disk, the guide lever 210 is elastically biased in the direction of contact with the disk. Although not shown, it is preferable that an elastic member is provided to the loading lever 250 and the eject lever 230 to impart an elastic force in the disc contact direction.

3 is a perspective view showing a state in which the large-diameter disk DL is started to contact the eject lever 230 after moving the guide lever 210 and the loading lever 250 in the optical device according to the present invention. As will be described below, the guide lever 210 and the loading lever 250 of the present invention are unlocked only when all of them are pushed by a manually inserted disk. In the case of inserting the large diameter disk DL, the guide lever 210 is moved to secure a loading space. The disc continues to move and begins to push the eject lever 230. The drive means turned on / off by the drive switch (see FIG. 11, 460) operates the lever member 200.

Although not shown, when the disk is manually inserted into the slot 10, when the disk is moved to the on position of the driving switch 460, the driving switch 460 is turned on and the driving means is operated, and the disk is unloaded when the disk is unloaded. When the drive switch 460 is out of the on position, the drive switch 460 is turned off and the operation of the drive means is stopped. At this time, the disk is preferably unloaded by the elastic force of the eject lever 230.

As shown in FIG. 11 and below, the driving switch 460 is provided at a predetermined position on the eject lever 230 trajectory, and is preferably turned on / off according to the rotation amount of the eject lever 230. For example, the drive switch 460 is turned on and the drive means at a point where the diameter portion of the disc inserted manually passes through a virtual straight line extending from the disc contact portion 255 of the loading lever 250 and the guide lever 210. The operation of is preferably started and the disk is loaded automatically.

4 is a perspective view showing a state before the chucking after the large-diameter disk DL is loaded in the optical device according to the present invention. The driving means raises the main unit 100 to chuck the disk to the turntable 110 when the disk is loaded to a position concentric with the turntable 110. FIG. 5 is a perspective view illustrating a state in which the large-diameter disk DL shown in FIG. 4 is chucked to the turntable 110 and the lever member 200 is escaped. When the chucking of the disk is completed, the lever member 200 escapes from the outer circumference of the disk for rotation of the disk. The drive means evacuates the lever member 200 from the side of the disk.

Unloading and unchucking of the disc are done in the reverse order of FIG. 2 to FIG. 5. An unchucking rod 50 is provided in the frame 500 that forms the exterior of the optical device. The main unit 100 is provided with an unchucking rod hole 60 that exposes the unchucking rod 50 in the disc direction during unchucking. Although not shown, a main unit boss is provided on the side of the main unit 100, and a main unit cam connected to the main unit boss is provided on the side of the main slider 350. Therefore, the main slider 350 moves the main unit 100 up and down while moving linearly. When the main unit 100 is lowered, the unchucking rod 50 protrudes into the unchucking rod hole 60 and unchucks the disk.

6 is a perspective view illustrating a state in which the small diameter disk DS is chucked to the turntable 110 and the lever member 200 is escaped in the optical device according to the present invention. According to the diameter of the disk, the lever member 200 is operated to have different trajectories. 6 and 5, in the case of the small diameter disk DS, the guide lever 210 remains locked in the standby state and the loading state and is evacuated from the side of the disk upon completion of chucking. The amount of rotation of the loading lever 250 is larger for the small diameter disk DS. The movement amount of the eject lever 230 is smaller in the case of the small diameter disk DS.

5 and 6 together, the shutter 440 is raised to block the slot 10. If another disk is inserted into the slot 10 while the disk is loaded, the lever member 200 may be damaged. The shutter 440 is raised to a position for blocking the slot 10 in the state where the disc is loaded and lowered to a position for opening the slot 10 in the state where the disc is unloaded. To this end, the shutter 440 is preferably operated by the main slider 350 to be described later. The detailed structure in which the main slider 350 operates the shutter 440 may be various embodiments and is not illustrated.

7 is a rear view illustrating a locked state of the locking means and the lever member 200 according to the present invention. FIG. 8 is a rear view showing a state in which the locking means and the lever member 200 shown in FIG. 7 are pushed off by the large-diameter disk DL. 7 and 8 together, locking means and drive means are shown. The locking means locks the operation of the guide lever 210 and the loading lever 250 in the standby state, and when the guide lever 210 and the loading lever 250 are both pushed when the disc is manually inserted into the slot 10. Only release the lock. The drive means includes a drive source 300 and a main slider 350. The main slider 350 is connected to the driving source 300 by the worm gear 301, the gear train 305, the rack 355, and moves the lever member 200 while moving linearly.

The main slider 350 includes a first loading cam 361 and a second loading cam 362. Cams for operating the loading lever 250 are separately provided according to the diameter of the disk, such as the first loading cam 361 and the second loading cam 362, so that the loading lever 250 has different trajectories according to the diameter of the disk. Is moved to. The first loading cam 361 moves the large diameter disk DL by operating the loading lever 250 when loading the large diameter disk DL. The second loading cam 362 moves the small diameter disk DS by operating the loading lever 250 when loading the small diameter disk DS.

When the disc is manually inserted through the slot 10 in the standby state, either one of the first and second loading cams 361 and 362 is selected by a difference in the amount of movement of the loading lever 250 that is pushed and moved by the disc. The loading cam boss 256 provided on the loading lever 250 is connected to any one of the first and second loading cams 361 and 362 according to the diameter of the disc to be inserted.

As shown in FIG. 7, the loading cam boss 256 is in a position close to the second loading cam 362 in the standby state. As shown in FIG. 8, since the rotation amount of the loading lever 250 is relatively large according to the manual insertion of the large diameter disk DL, the loading cam boss 256 is rotated to a position close to the first loading cam 361. If the manual insertion is continued, the operation of the driving means is turned on and the driving force is transmitted to the main slider 350 so that the loading cam boss 256 is moved along the first loading cam 361.

Since the rotation amount of the loading lever 250 is very small when the small diameter disk DS is manually inserted as shown in FIG. 9, the loading cam boss 256 is positioned close to the second loading cam 362 and does not leave the standby position. can not do it. If the manual insertion continues, the operation of the driving means is turned on and the driving force is transmitted to the main slider 350 so that the loading cam boss 256 is moved along the second loading cam 362. Therefore, the loading cam boss 256 and the loading lever 250 linked thereto according to the diameter of the disk draw different trajectories, and as a result, they can correspond to disks of various diameters.

The loading lever 250 includes a first loading lever 251 and a second loading lever 252. One end of the first loading lever 251 is connected to the main slider 350 by the loading cam boss 256, and is rotated about the first loading lever hinge 253. The second loading lever 252 is rotated about the second loading lever hinge 254, one end of which is pivotally coupled to the first loading lever 251, and the other end has a disk contact portion 255.

The locking means comprise a first link 410 and a second link 420. The first link 410 includes a first cam 411 and is rotated about the first hinge 412 by the movement of the first cam 411. The first cam 411 is connected to the first boss 220 provided in the guide lever 210. The second link 420 has a second cam 421 and is rotated about the second hinge 422 by the movement of the second cam 421. The second cam 421 is connected to the second boss 260 provided on the loading lever 250.

The first and second links 410 and 420 are pivotally coupled to opposite sides of the first and second cams 411 and 421 based on the first and second hinges 412 and 422. The first and second cams 411 and 421 are provided with a first locking portion 415 and a second locking portion 425 at portions where the shape is bent. The first locking portion 415 locks the guide lever 210 by regulating the first boss 220 and the second locking portion 425 locks the loading lever 250 by regulating the second boss 260. . When the large diameter disk DL is manually inserted, when the pivoted first and second links 410 and 420 rotate in opposite directions, the degree of inflection of the first and second locking portions 415 and 425 is alleviated to guide the guide. The locking of the lever 210 and the loading lever 250 is released. On the other hand, since the first and second links 410 and 420 cannot be rotated in opposite directions when the small diameter disk DS is manually inserted, the locking of the guide lever 210 and the loading lever 250 is not released.

FIG. 10 is an explanatory diagram illustrating an enlarged view of the first and second locking units 415 and 425 illustrated in FIG. 8. 7, 8, and 10 together, the first auxiliary link hinge 213 serving as the pivot center of the first boss 220 and the first loading lever hinge serving as the pivot center of the second boss 260 ( 253 is shown. Referring to FIG. 10, the positions of the first cam 411 and the second cam 421 in the locked state are shown by solid lines, and the positions of the first cam 411 and the second cam 421 in the unlocked state are dotted lines. Has been shown.

For example, when the large diameter disk DL is manually pushed in the locked state, a counterclockwise rotation force is applied to the first loading lever 251 about the first loading lever hinge 253. In this case, the second link 420 receives the rotational force in the clockwise direction about the second hinge 422 by the second boss 260. The first link 410 pivotally coupled to the second link 420 and rotated in opposite directions receives a rotational force in a counterclockwise direction about the first hinge 412. Although the first cam 411 has a dotted line shape in FIG. 10, the first locking portion 415 acts on the first boss 220 by the tensile force T with the first auxiliary link hinge 213 as a reference point. 1 The locking of the boss 220 is not released.

On the other hand, if a clockwise rotational force is applied to the first auxiliary link 211 provided on the guide lever 210 side, the rotational force M based on the first auxiliary link hinge 213 acts on the first boss 220. As the first cam 411 becomes a dotted line shape shown in FIG. 10, the degree of inflection of the first locking part 415 is alleviated. The first boss 220 to which the rotational force M is applied passes zigzag through the assembly gap existing between the first locking portions 415, and the locking is easily released. Therefore, in the present invention, the locking is released only when pushing the loading lever 250 and the guide lever 210 at the same time, and when locking only one, the locking is not released.

9 is a rear view illustrating the correlation between the locking means and the small diameter disk DS according to the present invention. The guide lever 210 and the loading lever 250 have a separation distance ΔL of a portion adjacent to the slot 10 in the standby state larger than the diameter of the small diameter disk DS and smaller than the diameter of the large diameter disk DL. desirable. Therefore, the locking is released because the guide lever 210 and the loading lever 250 are pushed simultaneously when the large diameter disk DL is manually inserted in the standby state, but when the small diameter disk DS is manually inserted, the guide lever ( Since only one of the 210 and the loading lever 250 is pushed, the locking is not released.

Referring back to FIG. 10, the first and second cams 411 and 421 have first and second loading portions 416 and 426, respectively. The first and second bosses 220 and 260 move along the first and second loading portions 416 and 426 respectively when the large diameter disk DL is loaded, and are loaded and unloaded when the small diameter disk DS is loaded. The first boss 220 is locked and loaded / unloaded while the second boss 260 is moved along the second loading unit 426. The small diameter disk DS passes through the locked guide lever 210 and the loading lever 250 as it is, and moves the eject lever 230 to turn on the driving switch 460 described above. When the driving switch 460 is turned on, the loading lever 250 is moved along the second loading part 426 despite the locking of the guide lever 210 to load the small diameter disk DS. That is, the guide lever 210, the eject lever 230 and the loading lever 250 are moved at the same time to load / unload the large diameter disk (DL). Meanwhile, the guide lever 210 is locked and the eject lever 230 and the loading lever 250 are moved to load / unload the small diameter disk DS.

The optical device of the present invention preferably comprises diameter sensing means for sensing the diameter of the disk inserted into the slot 10. The diameter sensing means has a guide lever switch 450. The guide lever switch 450 recognizes that the large diameter disc DL is loaded when the guide lever switch 450 is pressed by the contact of the guide lever 210 when the disc is loaded. The operation timing of the driving means is determined by the diameter sensing means and the drive switch 460. When it is recognized that the large diameter disk DL is loaded, the operation timing of the driving means should be adjusted to move the lever member 200 to the position shown in FIG. 5, and when it is recognized that the small diameter disk DS is loaded, the driving The timing of the operation of the means should be varied to move the lever member 200 to the position shown in FIG. Therefore, it is preferable that a plurality of drive switches 460 be provided at different positions so that the on positions of the drive switches 460 are distinguished from each other according to the diameter of the disk.

11 is a rear view illustrating the standby state of the sub slider 370 according to the present invention. FIG. 12 is a rear view showing the state of the sub slider 370 when the large-diameter disk DL is chucked in the present invention. FIG. 13 is a rear view showing the state of the sub slider 370 when the small diameter disk DS is chucked in the present invention. 11 to 13, the driving means may further include a sub slider 370, a guide lever regulating link 380, and a connecting link 390.

The sub slider 370 is connected to the main slider 350 by a connecting link 390 and reciprocated. The sub slider 370 may move the first and second guide lever escape parts 371 and 372 for escaping the guide lever 210 to different positions according to the diameter of the disc, and the eject lever 230 may be different depending on the diameter of the disc. First and second eject lever escape portions 375 and 376 to escape to position.

When the large diameter disk DL is chucked, the first guide lever escape portion 371 escapes the guide lever 210 from the side of the disk, and the second guide lever 210 performs the chucking of the small diameter disk DS. In this case, the guide lever 210 escapes from the side of the disk. When the large ejection disk DL is chucked, the first eject lever escape portion 375 escapes the eject lever 230 from the side of the disk, and the second eject lever escape portion 376 is chucked by the small diameter disk DS. When complete, the eject lever 230 is evacuated from the side of the disk. One of the first and second guide lever escape parts 371 and 372 is selected by the difference in the amount of movement of the guide lever 210 which is pushed and moved by the disc. Again, either one of the first and second eject lever escape sections 375, 376 is selected by the difference in the amount of movement of the eject lever 230 that is pushed and moved by the disc.

The sub slider 370 regulates the movement of the guide lever 210 so that the guide lever restricting portion 374 closely adheres to the side surface of the small diameter disk DS when the small diameter disk DS is loaded. It is preferable to provide. The sub slider 370 preferably further includes a chucking / unchucking guide 379 for guiding the lifting and lowering of the main unit 100 during chucking / unchucking of the disc.

The guide lever regulating link 380 regulates the movement of the guide lever 210 to closely adhere the guide lever 210 to the side of the large diameter disk DL when loading the large diameter disk DL, and the large diameter disk DL. When chucking is completed, the regulation is released by rotating by the sub slider 370. The guide lever regulating link 380 is operated by connecting the guide lever regulating link boss 381 provided in the guide lever regulating link 380 to the guide lever regulating link cam 378 provided in the sub slider 370.

The connecting link 390 interlocks the main slider 350 and the sub slider 370 with each other. The connection link cams 351 and 377 provided on the main slider 350 and the sub slider 370 are connected to the respective connection link bosses 391 provided on the connection link 390 to operate the connection link 390. After the disk is chucked, the evacuation of the loading lever 250 depends on the shapes of the first and second loading cams 361 and 362 provided on the main slider 350.

14 is a flowchart of a control method of an optical device according to the present invention. When power is applied to the optical device (step 600), the main unit 100, the lever member 200, and the driving means enter the standby state (step 610). When the loading instruction of the disc is input, the optical device checks whether the main unit 100, the lever member 200, and the driving means are in the initial reset positions shown in Figs. 2, 7, and 11 (step 620). ). The optical device is operated to reach the initial reset position if it is out of the initial reset position. If it is determined that the optical device is in the initial reset position, the diameter of the disk is determined by the diameter detecting means (step 630).

If it is recognized that the disk inserted into the slot 10 is the large diameter disk DL, the lever member 200 moves the trajectory for loading the large diameter disk DL and turns the large diameter disk DL to the turntable 110. ) To a location that is concentric with the step (step 640). As the main unit 100 moves up and down, the large diameter disk DL is chucked to the turntable 110 (step 641). When the chucking is completed, the lever member 200 is moved to the escape position with respect to the large diameter disk DL (step 642).

If the disc inserted in the slot 10 is recognized as the small diameter disk DS, the lever member 200 moves the trajectory for loading the small diameter disk DS and loads the small diameter disk DS ( Step 650). As the main unit 100 is elevated, the small diameter disk DS is chucked to the turntable 110 (step 651). When the chucking is completed, the lever member 200 is moved to the escape position with respect to the small diameter disk DS (step 652).

When loading and chucking of the large or small diameter discs DL and DS is completed (step 660), the optical device records / reproduces data on the disc (step 670). If the unloading command is input to the optical device after recording / reproducing of data is completed, the above process is performed in reverse order. That is, the lever member 200 which has been moved to the escape position is in close contact with the side of the large diameter or the small diameter disks DL and DS, and as the main unit 100 descends, the large diameter or the small diameter disks DL and DS are moved. After being unchucked by being pushed by the unchucking rod 50, the lever member 200 moves a track divided by the diameter of the disk and unloads the disk in the slot 10 direction.

Fig. 15 is a plan view showing the operation of the protection means of the present invention and is a plan view of the optical device at the moment of manually inserting the large-diameter disk DL. Fig. 16 is a plan view of the optical device showing the state in which the large-diameter disk DL is manually inserted to the position where the operation of the driving means is turned on. FIG. 17 is an enlarged view illustrating a portion E of FIG. 16. 18 is an enlarged view showing a state in which loads acting in the loading direction of the disk by the protecting means are absorbed.

15 to 18 together, the configuration and operation of the protection means will be described. The protecting means is for absorbing abnormal loads acting on the lever member 200 (see FIG. 3) to prevent breakage of the optical device. The protective member of the present invention can absorb the abnormal load acting upon loading / unloading of the large diameter disk DL as well as the small diameter disk DS (see FIG. 6). ) Is shown only. 6, 9, and 13 may refer to the detailed trajectory of the lever member 200 when loading / unloading the small diameter disk DS.

In the state of Fig. 15 corresponding to the initial loading of the disc, the operation of the driving means is off. As the manual insertion of the disc continues, the drive switch 460 detects this when the disc is inserted to the position shown in FIG. 16 and the operation of the drive means is turned on.

When power is supplied to the optical device and the operation of the driving means is possible, even if a disc is inserted beyond the position shown in FIG. 16, the device is not damaged because the lever member 200 is driven along a predetermined trajectory. However, when the power supply of the optical device is turned off, if the disc is forcibly inserted beyond the positions shown in Figs. 16 and 17, the operation of the driving means is turned on, the load unreasonably loaded in the lever member 200 in the loading direction. This can damage the device. Similarly, when the disk is unloaded by the operation of the driving means, if the disk is unloaded in the unloading direction by force, the lever member 200 is subjected to an excessive load in the loading direction, and thus the device may be damaged. Protective means elastically absorb this unreasonable load.

In one embodiment, the guide lever 210 consists of first and second auxiliary links 211 and 212, and the loading lever 250 (see FIG. 2) consists of first and second loading levers 251 and 252. The power of the driving source 300 is transmitted to the rack 355 of the main slider 350 through the worm gear 301 and the gear train 305. Of the lever member 200, the guide lever 210 (see FIG. 2) and the loading lever 250 may freely move a predetermined trajectory in a state in which the locking means is released in an elastically biased state in the unloading direction. In the manual insertion of the large diameter disk DL, the locking of the guide lever 210 and the loading lever 250 is released. As the manual insertion of the large-diameter disk DL continues, when the driving means is turned on, the guide lever 210 or the loading lever 250 is driven by the driving means. At this time, the external force applied through the disk is transmitted to the driving means through the guide lever 210 or the loading lever 250 may damage the device. In addition, when the eject lever 230 is driven by the operation of the driving means, the external force applied to the eject lever 230 through the disk is transmitted to the driving means may damage the device.

The protection means may be provided in the eject lever 230 having the largest amount of rotation among the lever members 200. In this embodiment, the protection means includes an absorbing spring 720, a press 750, an eject lever detection switch 730, and a press bleed groove 740.

The eject lever 230 is elastically biased in the unloading direction by the eject lever spring 710. The absorbing spring 720 is provided separately from the eject lever spring 710 to act on the eject lever 230 in the loading direction. Function to elastically absorb abnormal loads. The pressing part 750 is provided in the eject lever 230 and is interlocked with the ejecting lever 230. The pressing part 750 is in contact with one end of the absorption spring 720 and elastically compresses the absorption spring 720. The eject lever detection switch 730 is interlocked with the eject lever 230 and operates the driving switch 460 according to the rotation amount of the eject lever 230, or is connected to the sub slider 370 to change the operation mode of the optical device. Switch. The pressing part escape groove 740 separates the operation of the pressing part 750 and the eject lever detecting switch 730 from each other, and the movement of the eject lever detecting switch 730 is not interrupted by the moving pressing part 750. Do not. Therefore, even when the movement of the eject lever detection switch 730 is stopped, the absorption spring 720 may be elastically compressed by the movement of the eject lever 230 and the pressing part 750. In one embodiment, the absorbing spring 720 is an annular spring that is fitted to the rotation center of the eject lever 230, one end of which is fixed to the eject lever detection switch 730 and the other end is in contact with the pressing part 750. do.

The state of the protection means shown in Figs. 15 to 17 corresponds to the point of manual insertion from the beginning of manual insertion of the disc to the position where the drive means is intended to be on, so that the absorption spring without elastic compression of the absorption spring 720 is provided. The state 720 is rotated together with the eject lever detection switch 730. When the forced insertion of the disc continues beyond the positions of FIGS. 16 and 17 where the operation of the drive means is intended to be turned on, the eject lever detection switch 730 despite the eject lever 230 being continuously rotated as shown in FIG. ) Rotation is stopped and the absorbing spring 720 is elastically compressed by the pressing part 750 provided in the eject lever 230 to absorb the abnormal load. When power is normally supplied to the optical device, the driving source 300 drives the rack 355 to move the main slider 350 based on the positions shown in FIGS. 16 and 17, but power is supplied to the optical device. If not, even when the eject lever 230 is rotated to the position shown in FIG. 18, the driving source 300 is stopped, so that the main slider 350 maintains the standby position.

As described above, according to the optical device of the present invention and its control method, the number of parts is simplified and has a compact structure capable of limiting the overall thickness within the allowable value, and the insertion or ejection of the disk is automated in a slot-in manner, As the lever member moves different trajectories according to the diameter difference of, it is possible to load disks of various sizes with large diameters and small diameters, and it is equipped with a protective means to elastically handle abnormal loads acting upon loading / unloading of disks. Absorption can prevent damage to the device.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

Claims (40)

A main unit for rotating the turntable on which the disk is chucked, and having an optical pickup for recording / reproducing data on the disk; A lever member for guiding the side of the disk to load the disk into a position concentric with the turntable and to unload it in the opposite direction; Drive means for operating the lever member; Including; And the lever member is operated to have different trajectories according to the diameter of the disk, thereby loading / unloading disks of various diameters. The method of claim 1, The lever member is An eject lever for applying an elastic force in the unloading direction to the disk; A guide lever forming a disk guide surface extending linearly along the loading direction of the disk; A loading lever which pushes the disk and moves in the reverse direction when the disk is unloaded; An optical device comprising a. The method of claim 2, The guide lever has a four-section link structure, and is operated while maintaining a state substantially parallel to the loading direction of the disk. The method of claim 2, Locking means for locking the operation of the guide lever and the loading lever in a standby state and releasing the locking when both the guide lever and the loading lever are pushed by the disc when the disc is manually inserted into the slot; ; An optical device comprising a further. The method of claim 4, wherein The locking means, A first link having a first cam connected to a first boss provided in the guide lever and pivoted about a first hinge by a movement of the first cam; A second link having a second cam connected to a second boss provided in the loading lever and pivoted about a second hinge by movement of the second cam; An optical device comprising a. The method of claim 5, The first and second links, Opposite sides of the first and second cams are pivotally coupled to each other based on the first and second hinges. The method of claim 6, The first and second cams are provided with a first locking portion and a second locking portion, respectively, at portions where the shape thereof is bent. And the first locking portion restricts the first boss to lock the guide lever, and the second locking portion regulates the second boss to lock the loading lever. The method of claim 7, wherein When the first and second links are rotated in opposite directions when the disc is manually inserted, the degree of inflection of the first and second locking portions is alleviated, thereby releasing the locking of the guide lever and the loading lever. The optical device characterized in that. The method of claim 5, The first and second cams have first and second loading portions, respectively, The large diameter disk is loaded / unloaded as the first and second bosses are moved along the first and second loading portions, respectively. And the small diameter disk is loaded / unloaded as the first boss is locked and the second boss is moved along the second loading portion. The method of claim 2, The drive means, Drive source; A main slider having a rack connected to the drive source and operating the lever member while being linearly moved; An optical device comprising a. The method of claim 10, The main slider, A first loading cam for moving the large diameter disk by operating the loading lever; A second loading cam for moving the small diameter disk by operating the loading lever; An optical device comprising a. The method of claim 11, When the disc is manually inserted through the slot in the stand-by state, any one of the first and second loading cam is selected by the difference in the amount of movement of the loading lever that is pushed and moved by the disc . The method of claim 12, And a loading cam boss connected to any one of the first and second loading cams according to the diameter of the inserted disk. The method of claim 11, The first and second loading cam, And the loading lever is evacuated from the side of the disk when the disk is chucked to the turntable. The method of claim 10, The drive means, A reciprocating portion connected to the main slider and having a guide lever escape portion for evacuating the guide lever from the side of the disc when the disc is chucked to the turntable and an eject lever escape portion for escaping the eject lever from the side of the disc. A sub slider; The optical device according to claim 1, further comprising. The method of claim 15, The sub slider, First and second guide lever escape parts for escaping the guide lever to different positions according to the diameter of the disk; First and second eject lever escape parts for escaping the eject lever to different positions according to the diameter of the disk; An optical device comprising a. The method of claim 16, And any one of the first and second guide lever escape parts is selected by a difference in the amount of movement of the guide lever pushed by the disk. The method of claim 16, And one of the first and second eject lever escape parts is selected by a difference in the amount of movement of the eject lever pushed by the disk. The method of claim 15, The sub slider, A guide lever restricting portion which regulates the movement of the guide lever when the small diameter disk is loaded to closely contact the side of the disk; It further comprises a photonic device. The method of claim 15, The sub slider, A chucking / unchucking guide for guiding the lifting and lowering of the main unit during chucking / unchucking of the disc; It further comprises a photonic device. The method of claim 15, The drive means, Regulating the movement of the guide lever when the large diameter disk is loaded, the guide lever is in close contact with the side of the disk, when the chucking of the large diameter disk is rotated by the sub-slide guide lever regulation to release the regulation link; It further comprises a photonic device. The method of claim 15, The drive means, A connection link connecting the main slider and the sub slider to each other; It further comprises a photonic device. The method of claim 22, The main slider, And a link link cam for operating said link link. The method of claim 10, The loading lever is A first loading lever having one end connected to the main slider and pivoting about a first loading lever hinge; A second loading lever pivoted about a second loading lever hinge, one end of which is pivotally connected to the first loading lever, and the other end of which is in contact with the disk side; An optical device comprising a. The method of claim 10, A shutter which is moved to a position to block the slot when loading of the disk is completed; The optical device according to claim 1, further comprising. The method of claim 25, And the shutter is operated by the main slider. The method of claim 2, And the guide lever and the loading lever are elastically biased in a direction in contact with the side of the disk. The method of claim 2, Diameter sensing means for sensing the diameter of the disk inserted into the slot; An optical device comprising a further. The method of claim 28, The diameter sensing means, And a guide lever switch for recognizing the disk as a large diameter disk when the disk is pressed in contact with the guide lever when the disk is loaded. The method of claim 2, A drive switch for turning on / off an operation of the drive means; More, When the disc is manually inserted into the slot, when the disc is moved to the on position of the drive switch, the drive switch is turned on and the driving means is operated. When the disc is unloaded, the disc is out of the on position. And the disk is unloaded by the elastic force of the eject lever. The method of claim 2, The guide lever, the eject lever and the loading lever are moved simultaneously to load / unload a large diameter disc, And the guide lever is locked and the eject lever and the loading lever are moved to load / unload a small diameter disk. The method of claim 31, wherein And the guide lever and the loading lever have a separation distance of a portion adjacent to the slot in a standby state larger than the diameter of the small diameter disk and smaller than the diameter of the large diameter disk. The method of claim 1, An optical device having a thickness that can be mounted on a notebook computer. The method of claim 2, Protective means for elastically absorbing the load acting in the loading direction on the lever member when the manual insertion of the disk is continued beyond the position at which the operation of the drive means is turned on during loading of the disk; An optical device comprising a further. The method of claim 34, The protective means, When the disk is unloaded and the movement of the disk in the unloading direction is suppressed while the disk is unloaded, the load acting in the loading direction on the lever member is resiliently absorbed. Optical device. The method of claim 35, wherein The protective means, An absorption spring provided separately from an eject lever spring for elastically biasing the eject lever in an unloading direction, the absorbing spring elastically absorbing a load acting in the loading direction on the eject lever; An optical device comprising a. The method of claim 36, The protective means, A press part which is interlocked with the eject lever and elastically compresses the absorbing spring to elastically absorb a load acting in the loading direction on the eject lever; An eject lever detection switch interlocked with the eject lever and configured to turn on / off an operation of the driving means; A pressing part escape groove for preventing interference between the pressing part and the eject lever detecting switch being moved; An optical device comprising a further. The method of claim 37, wherein And the absorption spring is elastically compressed by the movement of the eject lever and the pressing part even when the movement of the eject lever detection switch is stopped. The method of claim 38, The absorption spring, An annular spring fitted to the rotation center of the eject lever, one end is fixed to the eject lever detection switch and the other end is in contact with the pressing portion. A main unit for rotating the turntable on which the disk is chucked, and having an optical pickup for recording / reproducing data on the disk; A lever member inserted into a slot and corresponding to a disk having a diameter of various sizes, the lever member for guiding the side of the disk to load the disk into a position concentric with the turntable and to unload it in the opposite direction; Drive means for operating the lever member; Diameter sensing means for sensing the diameter of the disk inserted into the slot; In the control method of an optical device comprising: (a) determining the diameter of the disk by the diameter sensing means; (b) loading the disc into a position concentric with the turntable while the lever member is moved in different trajectories according to the diameter of the disc; (c) chucking the disk to the turntable; (d) escaping from the side of the disk while the lever member is moved to a different position according to the diameter of the disk; (e) recording / reproducing data after loading, chucking, and evacuation of the disc; Control method of an optical device, characterized in that it comprises a.

Images