TW519623B - Optical disk drive device - Google Patents

Abstract

An optical disk drive device is disclosed. The optical disk drive device comprises a magnet portion composed of a plurality of magnets arranged around the circumferential portion of an optical disk to alternately exhibit N and S polarities; a coil portion installed in the cartridge to correspond to the magnet portion; and a current supplying unit for supplying current to the coil portion and causing the optical disk to rotate due to the interaction between the coil portion and the magnet portion. Since the optical disk drive device having the able configuration can rotate an optical disk without using a spindle motor, the optical disk reproducing apparatus can be slim and light.

Description

519623 V. Description of the invention α) Background of the invention 1. Scope of the invention The present invention relates to an optical disc drive device, and more particularly to an optical disc drive device capable of driving an optical disc without a spindle motor. 2. Related technical description-Generally, a disc reproduction device such as a disc drive or a disc read-only memory (CD-ROM) drive includes a disc drive device for rotating the disc. ^ As shown in FIG. 1, the conventional optical disc drive device includes a turntable 2 for placing a disc 1, a positioner 4 for pressing down the placed disc 1, and a spindle motor 3 for driving the turntable 2 to rotate. In addition, the optical disc 1 is housed in a cassette 6 to protect the optical disc 1. As shown in FIGS. 2A and 2B, the cassette 6 includes upper and lower cases 6a and 6b, each of which is provided with a predetermined opening 6c to allow an optical pickup to access the optical disc in the optical disc reproduction device. 1; a shutter 6 f for selectively opening and closing the opening 6 c; and an opening cover 6 e for allowing the optical disc 1 to be inserted into or removed from the cassette 6. Therefore, when the cassette 6 is loaded into the optical disc reproduction apparatus, the shutter 6f is opened so that the optical pickup can access the optical disc 1 exposed from the opening 6c. In addition, the center portion 6 c ′ of the opening 6 c is located between the turntable 2 and the positioner 4, and the optical disc 1 is rotated by the spindle motor 3. Reference numeral 6 d indicates a peep hole for judging whether or not the optical disc 1 is present. At the same time, disc 1 is write-inhibited. Further, reference numeral 5 in Fig. 1 indicates a pedestal for mounting the spindle motor 3. When the optical disc 1 is loaded into the optical disc reproduction device, φ rises on the pedestal 5 and presses the optical disc between the turntable 2 and the positioner 4. However, since the turntable 2 and the spindle motor 3 must be installed when driving the optical disc 1 with the above-mentioned structure, the overall thickness of the optical disc reproduction apparatus is very thick. especially

8910062.ptd Page 4 519623 V. Description of the invention (2) This is because the spindle motor 3 must rotate the optical disc 1 at high speed, so be careful to limit the size of the spindle motor 3. Therefore, in order to make the optical disc reproduction device light and thin, an optical disc drive device for the optical disc 1 in the rotatable cassette 6 without the need of a core and shaft motor 3 is needed. SUMMARY OF THE INVENTION In order to solve the above problems, one object of the present invention is to provide an optical disc drive device having an improved structure, which can rotate an optical disc without a spindle motor. Therefore, in order to achieve the above object, Yu hereby provides an optical disc drive device for rotating the optical disc loaded in the cassette on the pedestal of the optical disc reproduction apparatus. The optical disc driving device includes a magnet part, which is composed of a plurality of magnets arranged around a peripheral part of the optical disc, to alternately present N poles and S poles; a coil part, corresponding to the magnet part installed in the cassette; and a current The supply unit is configured to supply a current to the coil portion and cause the optical disc to rotate due to an interaction between the coil portion and the magnet portion. The above-mentioned objects and advantages of the present invention can be more clearly understood from the detailed description of the preferred embodiments with reference to the accompanying drawings, which include: Description of the preferred embodiments FIG. 3 to FIG. 7 show an optical disc according to a first embodiment of the present invention Driving device. First, please refer to FIG. 3 to FIG. 5, a disc 10 is accommodated in a cassette 3 φ. The optical disc 10 has a magnet portion 11 formed along its circumference. The magnet section 11 includes a plurality of magnets arranged around the circumference of the optical disc 10 so as to alternately present N poles and S poles. The magnet portion 11 can be formed by using sintered gibbsite (f e r r i t e) or

8910062.ptd Page 5 519623 V. Description of the invention (3) Magnetic materials such as rare-earth magnets, or plastic magnets made by compression molding or injection molding using magnetic materials The slope coating method forms a thin film on the optical disc 10. The shaft 1 2 is installed at the center of the optical disc magazine 30. That is, the outer seat of the bearing 3 4 press-fitted with the shaft body 12 is rotated. In addition, the shaft body 12 is sandwiched between the support body 40 and the support body 40. Here, a ball bearing or a bearing, a hydraulic bearing, or an air bearing may be used. In addition, a magnet portion 11 is provided on a lower portion of the cassette 30, and a coil portion 21 is provided. The coil portion 21 is encircled, as shown in FIG. 6, and the self-reference numeral 22 is used to represent the magneto-electric conversion element by winding it. It can be used to detect the rotation position of the magnet portion 11. In addition, the circuit board 20 and the It is set in the cassette 30 as shown in FIGS. 3 and 7. When the cassette 30 is loaded with the optical disc 3 3, it is connected with a connector 60 to reconnect with the optical disc. Of course, it is controlled by the power supply 70 of the connector 60. The reference numeral 3 1 indicates that a pickup (not shown) is provided in the cassette 30 for accessing the optical disc 1; to selectively open or close the shutter and a peep hole of the opening 3 1 to determine the optical disc 1 0 status. In the above structure, if the coil part 21, the supply part 11 is used in accordance with the common use of the stator and the rotor, a rotating force is developed, so that the optical disc 10 can rotate the powder and the tree, or it can be rotated by spraying 10 The disc 10 is mounted on a ring and is mounted on a pedestal of a grease mixture or otherwise mounted in a mounting position together with a positioning other bearing, such as an oil-free bearing 3 4. The circuit board 20 includes a plurality of insoluble metal wire elements (Hall elemen is installed on the corresponding winding axis. The terminal part 33 is connected. When the device is regenerated, the power supply installed in the terminal part shall be installed by the device. An opening is formed in a predetermined control, and the reference numeral 35 indicates that it is possible: and the reference numeral 32 indicates that the magnet motor has the same rotation principle when an alternating current is required. In addition, when the optical disc is as above

8910062.ptd page 6 ⑷ Description of the invention; When rotating in L mode, or writing information into the device, the information is read from the optical disc 10 through the opening 31. The disc 10 can be used without ... f 1 0. Therefore, since the light 10 stored in the piece E 3 0 reads the information or the motor is rotated, it is allowed to write from the optical disc structure. It can be compared to Xi Liu and Zhuangbeixun to write the optical disc 10, so the optical disc is reproduced. The device is followed by the picture ί ί Ϊ is thinner. Dish drive Pei Zhi. 〇 The main figure 12 shows the light 300 according to the second embodiment of the present invention, FIGS. 8 to 12. The optical disc 100 is housed on a vertical surface of a cassette 110 including 22, and a magnet portion is arranged in a ring. 110. The magnet portion is in a position to alternate with the optical dimension ρ τ Shifang. That is, in the above-mentioned embodiment, the magnet portion is provided, but in this embodiment, the magnet portion η〇 is set to stop = Ju 1〇 〇 on the vertical surface of the circle. Therefore, the magnetic flux system of the magnet portion travels in a radial direction of 磲 100. In addition, a magnetic plate 120 is integrally provided at the center of the optical disc 丨 〇. When the pedestal 500 in an optical disc reproduction device rises or falls, the magnetic plate 1200 is attached to or detached from the magnet 5 provided on the pedestal 500. . ^ That is, the optical disc 100 is clamped between the magnetic plate 120 and the magnet 5 10 by a magnetic force. In addition, a ring-shaped vertical plate 340 is provided at the lower portion of the cassette 300 to face the magnet portion 110, and a circuit board 200 provided with a coil portion 210 is mounted on the inner surface of the vertical plate 340. Further, as shown in FIG. 11, the center portion of each coil of the coil portion 2 j 0 is provided with a Hall element 2 2 0 ′ as a magnetoelectric conversion element, which can be used to detect the rotation position of the magnet portion 1 10. In addition, as shown in FIGS. 8, 12 and 12, the circuit board 2000 is connected to a terminal 30 provided on the cassette 300. When the piece E300 is loaded into the disc reproduction device, the terminal portion 3300 is connected to a connector 600 for reproduction with the disc 8910062.ptd $ 7 pages 519623, invention description (5) loading ^ meat

Two = paper power connection. The power supplied via the connector 600 is controlled by a predetermined controller 700. Reference numeral 310 denotes an opening provided in the cassette _j, which can be used by a pickup (not shown) to access the disc; reference i ^ denotes a cover that can selectively open or close the opening 3 1 〇 Plate; reference numeral 3 2 0 indicates a peep hole for judging the state of the optical disk 100. In the above-mentioned structure, if an alternating current is supplied to the coil part 2 10, the magnetic rotation ^ 1 Q is developed in accordance with the same rotation principle as the commonly used motor, and a rotation of 1 'is made to rotate the optical disc 100. In addition, when the optical disc 100 is in the same manner as above, the pickup device reads information from the optical disc 100 through the opening 3 1 0, or writes the data to the optical disc 100. Therefore, in this embodiment, because the optical disc 100 contained in the film H 3 00 can also be rotated without using a spindle motor, at the same time, the information can be read from the optical disc 100, or the information can be read. Writing to a disc 丨 〇〇 Therefore, the structure of the disc reproduction device can be slimmer than a conventional device. In addition, the optical disc drive device according to the present invention can be applied to, for example, a positioning type optical disc reproduction device of a hard disk drive, as shown in FIGS. 3 and 4. The positioner 2 for holding the optical disc 1 'in the hard disk drive neither rises nor descends, but often contacts and fixes the optical disc 1 closely. Unlike the previous embodiments, the hard disk drive does not use the chip S. Reference numeral 4 denotes a swing arm pivotably mounted on one side of a base 3, and a pickup 5 is mounted thereon for writing information to or reading from the optical disc 1 '. Information.

Fig. 15 shows that the third embodiment of the present invention is applied to such a positioning type optical disc reproduction apparatus. As shown in FIG. 5, a base 50 is fixedly installed on the mandrel 30 ′, and the mandrel 30 ′ is press-fitted with a bearing 31 ′. In addition, the optical disc 10 is mounted on the outer race of the bearing 31 to rotate together with the outer race of the bearing

519623 V. Description of Invention (6)

. A magnet portion 丨 丨 is provided on the circumference of the optical disc 10, which is the same as the previous embodiment. A base 50, on which a circuit board 20 is mounted, is provided with a coil portion 21, which is provided on the magnet portion 1 '. As described above, the pair of coils 21 is supplied to the coil unit 21. According to the same rotation principle as that of a conventional motor, the optical disc 10 is rotated. When alternating current is applied, the magnet portion 11 develops a rotating force, so that the device shown in Fig. 16 is generated. Please refer to ‘Spindle 5 1 0’, which is arranged on the bearing 1 2 0. As in the previous figure 10 ’, its circumference includes a plurality of magnets N pole and S pole. The inner surface is in the above-mentioned frame iron part 1 10, development 100 ′ as described above 3 1 (Fig. 3). From the light showing the present photograph, Fig. 16 is pressed into the vertical table described in the outer seat. In addition, the bottom is installed with a single upper bearing 1 2 0. On the circle, according to the embodiment of the example, a disc is provided with a magnet portion on the surface of the optical disc 1 and a coil portion 2 1 0 is formed on the circular seat of the optical disc 1 0 0 '. A mandrel 5 1 0, in addition, the optical disc 1 0 0, is attached to the outer race to rotate together. 00 is housed in a piece of g300 1 1 0 ′. The peripheral portion of the magnet portion 1 1 0 'has a vertical plate 2 2 0, and a circuit board 2 0 0' of the vertical plate.

In the structure, if an alternating current is supplied to the coil part 2 1 0 ', a rotating force is generated to make the optical disk 丨 〇〇', as mentioned above, it will hurt the enemy, or the disk 1 100 will be rotated when rotating. In addition, when the disc head 5 '(Fig. 13) is written into the disc 100 through the opening information. Therefore, in the above-mentioned positioning type optical disc reproduction device, because the optical disc 100 can be rotated without using a spindle motor, it is still allowed to read or write information on the optical disc 100, so its architecture can be compared with a conventional device. Thinner. As described above, since the optical disc drive device according to the present invention can rotate the optical disk without using a spindle motor, it has the advantage that the optical disc reproduction device can

519623 V. Description of the invention (7) Lighter and thinner in 8910062.ptd Page 10 519623 Brief description of the diagram Brief description of the diagram Figure 1 is a sectional view of a conventional optical disc drive; Figures 2A and 2B are An exploded perspective view and a plan view showing a cassette structure of a conventional cassette optical disc; FIG. 3 is a plan view showing a disc drive device according to a first embodiment of the present invention; FIG. 4 is a sectional view taken along line IV-IV in FIG. 3 Figure 5 is a plan view showing the optical disc shown in Figure 3; Figure 6 is a plan view showing the circuit board shown in Figure 4; Figure 7 is a rear elevation view showing the terminal portion of the cassette shown in Figure 3 Fig. 8 is a plan view showing a disc drive device according to a second embodiment of the present invention; Fig. 9 is a sectional view taken along line IX-IX in Fig. 8; Fig. 10 is a perspective view showing the disc shown in Fig. 8 Figure 11 is a sectional view showing the circuit board shown in Figure 8; Figure 12 is a rear elevation view showing the terminal portion side of the cassette shown in Figure 8; Figure 13 is a perspective view showing A common positioning type optical disc drive device; FIG. 14 is a sectional view showing important parts in FIG. 13 Fig. 15 is a sectional view showing a disc drive device according to a third embodiment of the present invention; and Fig. 16 is a sectional view showing a disc drive according to a fourth embodiment of the present invention

8910062.ptd Page 11 519623 Schematic description of the disc drive.

Component reference table 1 Optical disc 2 Turntable 3 Mandrel motor 3a (not in the text) 4 Positioner 5 pedestal 6 Cassette 6 a Upper case 6 b Lower case 6 c Slot L 6 c 'Central hole 6 d Peephole 6 e Open cover 6 f Shroud 1 0 Optical disc 1 1 Magnet part 1 2 Shaft body 2 0 Circuit board 2 1 Coil part 2 2 Hall element 30 cassette 3 1 Opening hole

8910062.ptd Page 12 519623 Brief description of drawings 32 Peephole 3 3 Terminal section 3 4 Bearing 3 5 Shroud 4 0 Positioner 5 0 Pedestal 6 0 Connector 7 0 Controller 1 0 0 Disc 1 1 0 Magnet section 1 2 0 Magnetic plate 2 0 0 Circuit board 2 1 0 Coil section 2 2 0 Hall element 3 0 0 Magazine 3 1 0 Opening hole 3 2 0 Peephole 3 3 0 Terminal section 3 4 0 Vertical plate 3 5 0 Shroud 5 0 0 pedestal 5 1 0 magnet 6 0 0 connector 7 0 0 controller

8910062.ptd Page 13 519623 Brief description of the drawings 1 'Disc 2' Positioner 3 'Base 4' Swing arm 5 'Sensor head 6' (This component is not included in the text) 1 0 'Disc 1 1' Magnet 2 2 ' Circuit board 2 1 'coil section 3 0' spindle 3 Γ bearing 4 0 '(not in the text) 50' base 1 0 0 'disc 1 1 0' magnet section 1 2 0 'bearing 2 0 0' circuit board 2 1 0 'coil section 2 2 0' vertical plate 4 0 0 '(not in the text) 5 0 0' base 5 1 0, mandrel

8910062.ptd Page 14

Claims (1)

519623 VI. Application for patent scope 1. A magnetic part in an optical disc cartridge, within a line 3 · Ru and 4. Ru An 5. If it is straight 6 · Ru heart a electric coil application special unit package end-connect As for the application, including the re-application, the magnetic installation in the film application is installed on the surface. The application department installs the magnetically driven disc-turning iron part. The circle part is alternately provided. The flow supply part and the magnetic profit range include: sub-section, connector, film carrying range, several Holly range magnets, and hydraulic range iron. The unit is set on the film, which can be loaded for one turn. This device package includes multiple magnets, N pole and S pole. Corresponding magnet unit installation unit is used to supply the optical disc drive that is the first item among the iron units. It is set on a disc with the first item of a disc, or on a flat surface, or on a flat surface, or on a cassette power regeneration light. Use 2 or discs, 2 or discs to hang down. Connect the device disk drive to check the 3 items of water. The 5th item of the on-board range of the 5th item of the optical disc drive is a magnetic plate that is magnetic. Due to the interaction, it is clamped on the magnetic plate and the disc reproduction device base. , The ring is set in the cassette on the circumference of an optical disc; and the current is passed to the coil part, and the light is rotated. A moving device in which the current is connected to the coil section; and a terminal section when mounted in the optical disc reproduction device. Moving device, in which the coil part measures the rotation position of the magnet part. The disc drive described above is on a flat surface, and the coil portion is the horizontal surface of the disc. The above-mentioned optical disc driving device is a vertical moving device on a vertical surface with a coil portion facing the circumference of the optical disc. Among the optical discs, when the optical disc is loaded, the light is arranged between the magnets of the stand. 8910062.ptd Page 15 519623 VI. Application for patent scope 〇7. A kind of magnet drive on a base of an optical disc drive mounting device, the parts of which alternately form a coil part, a predetermined current for the coil part and the magnet 8. If the scope of patent application is set on the horizontal surface of the optical disc, facing 9. If the scope of patent application is set on a vertical plate on the circular base of the disc, the disc can be rotated to include multiple pairs of N poles and corresponding magnetic units of the S system. The phase surface of item 7 is on the flat surface of the disc water item 7 on the vertical surface of the disc, and the surface is rotatable, such a magnet pole; and the iron part and the coil part interact with the optical disc drive, and the line is flat. On the optical disc drive surface, an optical disc reproduction device is mounted on the optical disc revolvingly and includes: a ring mounted on the circumference of an optical disc and mounted on the base so that the optical disc rotates when a current is supplied. In the moving device, the magnet part and the coil part are installed on the base of the water. The moving device, the magnet part and the coil part are installed on a vertical surface provided on the circumference. 8910062.ptd Page 16