JP4735839B2 - Optical disk device - Google Patents

Description

  The present invention relates to an optical disc apparatus for reproducing and recording information recorded on a disc.

  Optical disks such as CD-R and DVD are widely used as storage media for personal computers. An optical disk device is built in a personal computer, and these optical disks can be used. The optical disk apparatus records information by irradiating the optical disk with laser light while moving in the radial direction of the optical disk and rotating the optical disk loaded on the disk tray at high speed, or laser light reflected from the optical disk And an optical pickup for reading out information. The disc tray is provided so as to be movable between an exposed position exposed to the outside of the housing when the optical disc is attached and detached and a storage position stored inside the housing.

  There are a plurality of types of optical disks having different diameters, such as an 8 cm optical disk with a diameter of 8 cm and a 12 cm optical disk with a diameter of 12 cm. For this reason, Patent Document 1 proposes a disk device in which a recess for placing an 8 cm optical disk is formed in the disk tray, and a flange-shaped protrusion for preventing the optical disk from dropping off is provided at the periphery of the recess. Yes.

  Patent Document 2 proposes a disk device in which a holding member for holding a disk from the out-of-plane direction is provided on the disk tray, and the holding member is movable. In this disk device, a plurality of types of disks having different diameters can be loaded by moving the holding member according to the diameter of the disk inserted into the recess of the disk tray.

  However, since Patent Documents 1 and 2 described above are structures that hold the outer periphery of the disc, they can only deal with discs having a prescribed disc diameter and shape, such as a 10 cm optical disc having a diameter of 10 cm or a rectangular shape. In order to cope with such a disk, etc., there is a problem that the structure for holding the disk becomes complicated and large, and the disk device itself becomes large.

Therefore, the applicant of the present invention holds a disc holder that is inserted into the disc hole of the optical disc and holds the optical disc in the disc tray, and holds the disc holder when the disc is unloaded, and holds the disc holder when the disc is loaded A holder clamp mechanism for releasing the optical disc, and 8cm optical disc and 12cm optical disc, as well as optical discs of other diameters (for example, 10cm optical disc) and non-circular optical discs (for example, rectangular optical disc) can be accurately positioned in the center of the disc tray. And a disk alignment mechanism (see Patent Document 3) that can be loaded into the disk.
JP-A-8-124264 JP 2001-67671 A JP 2003-223755 A

  However, in Patent Document 3, the optical disk is held by the disk holder, and the disk holder is held by the alignment ring of the turntable provided in the spindle motor. Since the process is performed via the ring and the disk holder, there is a problem that the alignment accuracy is deteriorated due to the accumulation of component dimensional errors as compared with the case where the optical disk is held only by the turntable.

  Further, in Patent Document 3, since the spindle motor is provided with an alignment ring and a spring for urging the alignment ring, there is a problem that the structure of the spindle motor is complicated and the cost is increased.

  Further, in Patent Document 3, an inclined claw piece is provided on a pickup base that movably supports a pickup unit, and this inclined claw piece is in sliding contact with an inclined claw piece formed on a holder of a holder clamp mechanism when loading a disc. The holder is moved by this, and the holding of the disc holder by the holder clamp mechanism is released. When the disc is played back, the pickup base is always in contact with the holder. Further, there is a problem that the vibration absorption performance of the pickup base by the damper attached to the pickup base is deteriorated.

  The present invention has been made to solve the above-described problems, and can accurately hold an optical disk having a different diameter or a non-circular optical disk on a spindle motor without deteriorating the swingability of the pickup base. Another object of the present invention is to provide an optical disc apparatus that can be accurately held and positioned by a spindle motor without dropping the optical disc when the casing is placed in either the vertical orientation or the horizontal orientation.

  In order to achieve the above object, an optical disk apparatus according to the present invention is equipped with a spindle motor for rotating an optical disk and an optical pickup, a reproduction position for recording and / or reproducing data on the optical disk, and a retreat retracted from the reproduction position. A pickup base that is displaceable between positions; a chucking core that is provided on the spindle motor and holds the optical disk; an exposed position that is exposed to the outside of the casing when the optical disk is attached and detached; and is stored inside the casing A disc tray that is movable between the storage position and the chucking core, wherein the pickup base is displaced to the playback position after the disc tray is moved to the storage position. The pickup base is provided with the retracted position and the reproduction position. A disc positioning and holding portion that is inserted into a disc hole of the optical disc to hold the optical disc when it is displaced between the base intermediate position between and the reproduction position, and that positions the optical disc in the radial direction; Projecting from the disk loading surface of the disk tray, the disk tray moves between the exposed position and the storage position, and the pickup base moves between the retracted position and the base intermediate position. A disc holder that is inserted into the disc hole and holds the optical disc when the optical disc is held by the disc positioning holding portion, and the holding of the optical disc by the disc holder is released. It is characterized by.

  The displacement of the pickup base includes rotation and movement. Examples of the optical disk include CD, DVD, dual disk, and SACD (hybrid disk). Further, examples of the disk positioning and holding portion include one formed integrally with the chucking core, one provided as a member separate from the chucking core, and the like.

  The disc holder is formed with a mounting portion on which the optical disc is placed; an insertion portion inserted into the disc hole; a diameter larger than the disc hole and elastically deformable, and is inserted through the disc hole. A holding portion for holding the optical disc; and an insertion hole through which the disc positioning holding portion is inserted. When the pickup base is displaced between the base intermediate position and the reproduction position, the disc It is preferable that the positioning holding part is inserted through the insertion hole, protrudes from the mounting part, and is inserted into the disk hole.

  Furthermore, when the pickup base is provided on the disc holder and the pickup base is displaced from the retracted position to the base intermediate position, the pickup base is engaged with an engaging portion provided on the chucking core, and the pickup base is It is preferable to provide an engagement claw that releases the engagement with the engagement portion when the displacement is made.

  A slider that is slidable between a first position for displacing the pickup base to the retracted position and a second position for displacing the pickup base to the reproduction position; The slider is slid to the first position when moved to the exposure position, and the slider is moved to the first position and the second position when the disc tray is moved from the exposure position toward the storage position. And a slider guide portion that is slid to an intermediate slider position.

A holder clamper that is displaceable between a holder holding position for holding the disc holder and a holder holding release position for releasing the holding; and biasing means for biasing the holder clamper toward the holder holding position And provided on the slider, the slider slides from the first position to a third position for displacing the pickup base to the base intermediate position, and then contacts the holder clamper to hold the holder clamper in the holder A clamper displacement portion that is displaced to a release position; and the disc holder released from being held by the holder clamper is positioned between the chucking core and the optical disc and is held by the chucking core. Is preferred. The displacement of the holder clamper includes rotation and movement. Further, examples of the urging means include a spring portion formed integrally with the holder clamper, a spring member separate from the holder clamper, and the like.

  Moreover, it is preferable to provide a slide mechanism for sliding the slider between the slider intermediate position and the second position. The slide mechanism preferably has a slide member that slides the slider, such as a motor. Further, it is preferable that the slide mechanism is connected to the disc tray and moves the disc tray.

  When the slider is slid from the slider intermediate position toward the second position by the slide mechanism, the disk tray is moved to the storage position, and the slider is moved from the second position by the slide mechanism. It is preferable that a tray guide unit that moves the disk tray from the storage position toward the exposure position when the slider is slid toward the slider intermediate position is provided.

  According to the optical disk apparatus of the present invention, a spindle motor for rotating the optical disk and an optical pickup are attached, and the optical disk apparatus is freely displaceable between a reproduction position for recording and / or reproducing data on the optical disk and a retreat position retracted from the reproduction position. A pickup base provided on the spindle motor and holding the optical disk; and movable between an exposed position exposed to the outside of the housing when the optical disk is attached and detached and a storage position stored in the housing And a disc tray, wherein the pickup base is provided at a chucking core and the pickup base is located between the retracted position and the playback position. When moving between the intermediate position and the playback position, A disk positioning and holding portion for holding the optical disk inserted into the hole and positioning the optical disk in the radial direction; and disposed so as to protrude from the disk loading surface of the disk tray so that the disk tray is between the exposed position and the storage position. And a disk holder that holds the optical disk inserted into the disk hole when the pickup base moves between the retracted position and the base intermediate position, and holds the optical disk by the disk positioning holding unit. Since the holding of the optical disk by the disk holder is released, the optical disk having a different diameter or a non-circular optical disk can be accurately held by the chucking core, and the optical disk can be moved to another member (disc Without using a holder). It can be, furthermore, vertically the housing, even when placed sideways in either direction, without dropping an optical disk can be held accurately chucking the core.

  Also, the disc holder has a mounting portion on which the optical disc is placed; an insertion portion that is inserted into the disc hole; a diameter larger than the disc hole and is elastically deformable, and is inserted through the disc hole to hold the optical disc And when the pickup base is displaced between the base intermediate position and the reproduction position, the disk positioning holding part is inserted through the insertion hole. Since it protrudes from the mounting portion and is inserted into the disc hole, the optical disc can be easily held on the chucking core with a simple configuration.

  Furthermore, when the pickup base is provided on the disc holder and the pickup base is displaced from the retracted position to the intermediate position of the base, it engages with an engaging portion provided on the chucking core, and when the pickup base is displaced to the reproduction position, Since it has an engaging claw that releases the engagement with the joint part, there is no state where the optical disk is not held by either the disk positioning holding part or the disk holder, even when the casing is placed vertically, The optical disk can be reliably held on the chucking core.

  1 and 2 show the appearance of an optical disc apparatus 2 using the present invention. The optical disc device 2 accesses a CD (compact disc) 3 which is an optical disc, and records and / or reproduces data on the CD 3, and is incorporated in a personal computer or the like. The optical disc apparatus 2 can also reproduce a DVD or the like.

  A player unit 11 including a disc tray 5, an optical pickup 6, a pickup base 7, a spindle motor 8, a chucking core 9, a turntable 10, a circuit board and the like is incorporated in the main body case 4 of the optical disc apparatus 2. . The main body case 4 includes an upper cover 4a and a lower cover 4b (see FIG. 8). The optical pickup 6, the pickup base 7, the spindle motor 8, the chucking core 9, and the turntable 10 are not shown in FIGS. 1 and 2, and are shown in FIGS. FIG. 1 shows a state in which the disc tray 5 is located at a storage position in which the disc tray 5 is stored inside the main body case 4 during CD3 reproduction. FIG. 2 shows an exposed position where the disc tray 5 is exposed to the outside of the main case 4. The state located in is shown.

  An open / close switch 14 for opening and closing the disk tray 5 is provided on the front surface of the main body case 4. Various switches such as a reproduction switch and a stop switch are provided around the open / close switch 14, and a plurality of switches including the open / close switch 14 are connected to a control unit 15 that performs main control of the optical disc apparatus 2. ing. Note that the switch including the open / close switch 14 may be provided on the personal computer in which the optical disc apparatus 2 is incorporated, without being provided on the front surface of the main body case 4.

  The disc tray 5 is provided to be movable between a storage position (see FIG. 1) stored inside the main body case 4 during CD3 reproduction and an exposed position (see FIG. 2) exposed outside the main body case 4. It is moved by a tray moving mechanism 40 described later. When the disc tray 5 is moved, the open / close switch 14 is operated.

  As shown in FIG. 3, the disc tray 5 is loaded with CD3, and has a recess corresponding to the outer diameter of CD3. An insertion hole 5a through which the spindle motor 8 and the chucking core 9 are inserted when positioned at the storage position is formed at the center of the disk tray 5, and the optical pickup 6 is connected to the CD 3 continuously to the insertion hole 5a. An access opening 5b for access is formed.

  A disc holder 20 for holding the CD 3 is inserted through the insertion hole 5 a of the disc tray 5. A first holder clamper 21 and a second holder clamper 22 for supporting the disc holder 20 are attached to the lower surface of the disc tray 5 so as to be rotatable about rotation shafts 21a and 22a, respectively. As will be described in detail later, the first holder clamper 21 and the second holder clamper 22 hold the disc holder 20 when the disc tray 5 moves between the exposure position and the storage position, and when reproducing the CD3, The holding of the holder 20 is released. Thereby, the disc holder 20 holds the CD3 when the disc tray 5 moves between the exposure position and the storage position, and releases the holding of the CD3 when reproducing the CD3. The disk holder 20 is held by the first and second holder clampers 21 and 22 so that the upper surface of the disk holder 20 protrudes from the disk loading surface of the disk tray 5 (see FIG. 8).

  The first holder clamper 21 is made of an elastically deformable resin, and includes an arm portion 21b formed with a rotating shaft 21a, a clamp portion 21c formed at the tip of the arm portion 21b, and a spring portion (biasing means) 21d. And comprising. The arm portion 21b is formed with a contact portion 21e that contacts the first slider pin (clamper displacement portion) 25c of the slider 25. The clamp portion 21 c has a tip that is formed in a substantially square shape in cross section, and supports the left end of the main body portion 20 a of the disc holder 20 that has a substantially square shape in cross section. The spring portion 21d functions as a mold spring and is in contact with a first spring hooking rib 5e (see FIG. 7) formed on the lower surface of the disc tray 5. By the biasing by the spring portion 21d, the first holder clamper 21 is biased toward the direction (C direction in FIG. 7) for supporting the disc holder 20, and is positioned at the holder holding position (see FIG. 7). To do.

  The second holder clamper 22 is made of an elastically deformable resin, and includes an arm portion 22b formed with a rotating shaft 22a, a clamp portion 22c formed at the tip of the arm portion 22b, and a spring portion (biasing means) 22d. And comprising. A contact portion 22e that contacts the first slider pin 25c of the slider 25 is formed in the arm portion 22b. The clamp portion 22c has a tip that is formed in a substantially letter-shaped cross section, and supports the right end of the disc holder 20 that has a substantially letter-shaped section. The spring portion 22d functions as a mold spring and is in contact with a second spring hooking rib 5f (see FIG. 7) formed on the lower surface of the disc tray 5. Due to the biasing by the spring portion 22d, the second holder clamper 22 is biased to the direction in which the disc holder 20 is supported (direction D in FIG. 7), and to the holder holding position (see FIG. 7). To position.

  As shown in FIG. 4, the disc holder 20 includes a ring-shaped main body (mounting portion) 20 a and a holder rib (insertion portion) 20 b erected in an arc shape on the main body 20 a and is elastically deformable. It is made of resin. An anti-slip sheet 23 is attached to the upper surface of the main body 20a to prevent the CD 3 from slipping during CD3 reproduction. The side surface of the main body portion 20a is tapered so as to have a substantially square cross section. 4A is a perspective view, and FIG. 4B is a side sectional view of the holding rib 20c and the engaging rib 20d.

  The holder rib 20b is cut out at three positions at a pitch of 120 °. At the three cut out positions, a holding rib (holding portion) 20c for holding the CD 3 and an engaging rib for engaging with the chucking core 9 are provided. 20d are formed. A plurality of slits (insertion holes) 20e through which the positioning ribs 9b (see FIG. 5) of the chucking core 9 are inserted are formed in the main body 20a, the holder ribs 20b, and the holding ribs 20c at a constant pitch. The holder rib 20b has an outer diameter smaller than the diameter of the disc hole 3a of the CD3.

  The holding rib 20c is formed in a substantially T-shaped cross section, and the outer peripheral side end of the upper end portion is formed so as to protrude to the outer peripheral side from the diameter of the disk hole 3a when holding the CD3. The portion of the upper end portion of the holding rib 20c that protrudes to the inner peripheral side becomes an operation unit that is operated when the user releases the holding of the CD 3 by the disc holder 20.

  The engagement rib 20d is formed in a substantially U-shaped cross section and is formed to protrude inward from the holder rib 20b. An engaging claw 20f that protrudes in the inner circumferential direction and engages with the chucking core 9 is formed at the lower end portion of the engaging rib 20d.

  As shown in FIG. 5, the chucking core 9 attached to the spindle motor 8 is formed with a core portion 9a for chucking the CD3. The core portion 9a is formed with positioning ribs (disk positioning holding portions) 9b that protrude radially at a pitch of 120 °. The positioning rib 9b holds and positions the CD 3, and is formed with a larger diameter than the holder rib 20b of the disc holder 20. The positioning rib 9b is inserted into the disc hole 3a through the slit 20e. Further, on the upper surface of the chucking core 9, a non-slip sheet 24 for preventing the disc holder 20 from slipping during CD3 reproduction is attached.

  The core portion 9a is formed in a tapered shape having a diameter that decreases toward the lower side, and an engaging portion 9c that engages with the engaging rib 20d is formed over the entire circumference. The core portion 9a is formed with an engagement hole 9d into which the engagement convex portion 10d of the turntable 10 is inserted. Further, two magnets 16 are embedded in the chucking core 9 at a pitch of 180 °. The number of magnets 16 is not limited to two and can be changed as appropriate.

  As shown in FIG. 6, at the time of CD3 reproduction, the positioning rib 9b of the chucking core 9 is inserted through the slit 20e of the disc holder 20, protrudes to the outer peripheral side from the holder rib 20b, and is inserted into the disc hole 3a. . That is, during CD3 reproduction, CD3 is held and positioned in the radial direction by the positioning rib 9b.

  As shown in FIG. 7, a pickup base 7 to which an optical pickup 6 and a spindle motor 8 are attached and a slider 25 are provided inside the main body case 4. A chucking core 9 is attached to the spindle motor 8.

  The optical pickup 6 incorporates an objective lens 26 that condenses the laser light emitted from the light emitting element on the recording surface of the CD 3, and is held movably on a holding shaft 27 attached to the pickup base 7. The optical pickup 6 is moved in the axial direction (A direction in FIG. 7) of the holding shaft 27 which is the radial direction of the CD 3 by a known unit moving mechanism.

  As shown in FIGS. 7, 8 and 9, on the lower surface of the disk tray 5, a first guide rib (slider guide portion) 5c for guiding the first slider pin 25c of the slider 25 and a second slider pin 25d are guided. A second guide rib (slider guide portion) 5d, a first spring hook rib 5e for the spring portion 21d of the first holder clamper 21, a second spring hook rib 5f for the spring portion 22d of the second holder clamper 22, Is erected. Each of the guide ribs 5c and 5d is erected two by two, and each of the pins 25c and 25d is inserted between the two ribs. Thus, when the disc tray 5 moves in the front-rear direction (vertical direction in FIG. 7), the pins 25c, 25d are guided in the left-right direction by the guide ribs 5c, 5d, and the slider 25 slides in the left-right direction. 7 is a front view, FIG. 8 is a lower side sectional view, and FIG. 9 is a right side sectional view.

  Four dampers 31 are attached to the pickup base 7 with screws 32. Two screws 32 on the rear side (upper side in FIG. 7) are screwed to a mounting portion inside the main body case 4 via a damper 31, and the pickup base 7 is centered on the two screws 32. In FIG. 9, it is attached so as to be rotatable in the B direction.

  Two screws 32 on the front side (the lower side in FIG. 7) are attached to the rotation base 33 via a damper 31. A first base pin 33a inserted into the first guide hole 25a of the slider 25 and a second base pin 33b inserted into the second guide hole 25b are formed on the front surface of the rotary base 33. A rotation shaft 33 c is formed on the left and right side surfaces of the rotation base 33, and the rotation shaft 33 c is rotatably mounted inside the main body case 4. As a result, the rotation base 33 is rotatable in the direction B in FIG. 9 about the rotation shaft 33c. The rotary shaft 33c is not restricted in the vertical position in FIGS. 7 and 9, and when the pickup base 7 rotates around the upper screw 32 in FIG. 9, the rotary shaft 33c is in FIG. Move up and down. As a result, when the rotary base 33 rotates, the pickup base 7 rotates in the direction B in FIG. 9 about the two screws 32 on the rear surface side (upper side in FIG. 7). In the present embodiment, the pickup base 7 rotates between a retracted position (see FIG. 9) and a reproduction position (see FIG. 18) according to the slide of the slider 25.

  The upper cover 4a is formed with a two-step stepped cover concave portion 4c, and an insertion hole 4d for inserting the main body portion 10a of the turntable 10 is formed on the bottom surface of the cover concave portion 4c. Yes. The turntable 10 rotates while being in contact with the CD3 during reproduction of the CD3, and includes a main body portion 10a and a flange portion 10b. The main body 10a is formed with a smaller diameter than the insertion hole 4d, and the flange 10b is formed with a larger diameter than the insertion hole 4d. An insertion recess 10c into which the upper portion of the chucking core 9 and the upper portion of the disc holder 20 are inserted is formed on the bottom surface of the main body portion 10a, and the engagement protrusion 10c is inserted into the engagement hole 9d. Part 10d is erected. A metal plate (not shown) is attached to the main body portion 10a, and this metal plate is held by the magnetism of the magnet 16 embedded in the chucking core 9, whereby the turntable 10 is chucked. It is held by the core 9. In FIGS. 1 and 2, the cover recess 4c is not shown.

  As shown in FIGS. 8 and 10, the slider 25 has a first guide hole 25a into which the first base pin 33a of the rotary base 33 is inserted, and a second guide hole 25b into which the second base pin 33b is inserted. A first slider pin (clamper displacement portion) 25c guided by the first guide rib 5c of the disc tray 5 and a second slider pin 25d guided by the second guide rib 5d are formed. Each slider pin 25c, 25d is erected on the upper surface of the slider 25. A slider gear 25 e is formed on the front surface of the slider 25.

  When the disc tray 5 is located at the exposed position (see FIG. 7), the second slider pin 25d is guided by the second guide rib 5d, and the slider 25 takes out the disc as the first position where the pickup base 7 is located at the retracted position. It is located at a position (see FIG. 8). When the disc tray 5 moves from the exposure position (see FIG. 2) toward the storage position (see FIG. 1), the first slider pin 25c is guided by the first guide rib 5c, and the second slider pin 25d is moved to the second position. Guided by the guide rib 5d, the slider 25 slides from the disk take-out position (see FIG. 8) to the gear meshing position (see FIG. 12) as the slider intermediate position.

  As shown in FIGS. 7 and 8, the slider gear 25 e meshes with a semicircular semicircular gear 35 that is rotatably provided inside the main body case 4. The semicircular gear 35 meshes only with the slider gear 25e when the slider 25 is positioned between the disk take-out position (see FIG. 8) and the gear meshing position (see FIG. 12). When the slider 25 slides from the disk take-out position to the gear meshing position and the semicircular gear 35 rotates, the semicircular gear 35 is the third stage of the tray gear 41 of the tray moving mechanism 40 for moving the disk tray 5. Engages with the gear 41c. The semicircular gear 35 meshes with the third gear 41c when the slider 25 slides between the gear meshing position and the disk holding position (see FIG. 18).

  As shown in FIGS. 11 and 12, when the disc tray 5 moves from the exposed position toward the storage position, the first slider pin 25c is guided by the first guide rib 5c, and the second slider pin 25d is guided by the second guide rib 5d. The slider 25 slides from the disk take-out position to the gear meshing position. 11 is a front view, and FIG. 12 is a lower side cross-sectional view.

  A tray moving mechanism 40 is provided inside the main body case 4. The tray moving mechanism 40 includes a tray gear 41, a relay pulley 42, a belt 43, a motor pulley 44, and a motor 45. The tray gear 41 and the relay pulley 42 are rotatably attached to a support shaft (not shown). The tray gear 41 is composed of a three-stage gear, and is a first-stage gear 41a, a second-stage gear 41b, and a third-stage gear 41c in order from the uppermost stage in FIG. The first stage gear 41 a meshes with a tray gear 5 g formed on the disc tray 5.

  A relay gear 42a is formed on the relay pulley 42, and the relay gear 42a meshes with the second gear 41b. The relay pulley 42 is provided concentrically with the semicircular gear 35. The motor pulley 44 is attached to the motor shaft of the motor 45, and a belt 43 is wound around the relay pulley 42 and the motor pulley 44. The motor 45 is connected to the control unit 15, and the drive is controlled by the control unit 15. The controller 15 drives the motor 45 when the open / close switch 14 is operated.

  When the motor 45 is driven and the motor pulley 44 rotates, the relay pulley 42 rotates through the belt 43, and the tray gear 41 meshed with the relay gear 42a rotates. As the tray gear 41 rotates, the disc tray 5 moves in the front-rear direction (vertical direction in FIG. 11). In the present embodiment, when the motor 45 is driven so that the motor pulley 44 rotates clockwise, the disc tray 5 moves from the exposed position toward the storage position, and the motor pulley 44 rotates counterclockwise. When 45 is driven, the disk tray 5 moves from the storage position toward the exposure position.

  When the semicircular gear 35 meshes with the third gear 41c, when the motor 45 is driven, the semicircular gear 35 rotates via the motor pulley 44, the belt 43, the relay pulley 42, and the tray gear 41. Then, the slider 25 engaged with the semicircular gear 35 slides. That is, when the slider 25 slides between the gear meshing position (see FIG. 12) and the disk holding position (see FIG. 18), it slides by driving the motor 45, and the gear meshing position and the disk take-out position (FIG. 8). When the first and second guide ribs 5c and 5d of the disc tray 5 are slid, they are slid.

  A slider switch 47 that detects the position of the slider 25 is provided inside the main body case 4. The slider switch 47 is connected to the control unit 15 and outputs an extraction position signal to the control unit 15 when it is detected that the slider 25 is positioned at the disk extraction position, and the slider 25 is positioned at the disk holding position. When this is detected, a holding position signal is output to the control unit 15. The controller 15 stops driving the motor 45 when the take-out position signal and the holding position signal are input.

  When the opening / closing switch 14 is operated while the take-out position signal is input, the controller 15 stops the input of the take-out position signal (the slider 25 slides from the disk take-out position toward the disk holding position), and the motor When the motor 45 is driven so that the pulley 44 rotates in the clockwise direction and the open / close switch 14 is operated while the holding position signal is input, the input of the holding position signal is stopped (the slider 25 is moved to the disk holding position). Slide toward the disk removal position), and the motor 45 is driven so that the motor pulley 44 rotates counterclockwise.

  When the motor 45 is driven so that the motor pulley 44 rotates in the clockwise direction and the disk tray 5 is moved from the exposed position toward the storage position, the slider 25 is moved to the disk immediately before the disk tray 5 moves to the storage position. Guided by the first and second guide ribs 5c and 5d of the tray 5, it slides from the disk take-out position to the gear meshing position. When the slider 25 slides to the gear meshing position, the tray gear 5g is disengaged from the first gear 41a. When the semicircular gear 35 is engaged with the third gear 41c and the slider 25 is slid to the right, the first slider pin 25c comes into contact with the first guide rib 5c, and the slider 25 is moved to the right. Due to the sliding force, the disc tray 5 moves rearward (upward in FIG. 11) to the storage position. In the present embodiment, the first slider pin 25c also functions as a tray guide portion that moves the disk tray 5 to the storage position when the slider 25 is slid from the disk take-out position to the gear meshing position.

  When the disk tray 5 is moved from the storage position toward the exposure position, the motor 45 is driven so that the motor pulley 44 rotates counterclockwise, and the slider 25 is slid leftward. When the slider 25 slides leftward to the gear meshing position, the first slider pin 25c comes into contact with the first guide rib 5c, and the disc tray 5 is moved forward (FIG. 11) by the force of the slider 25 sliding leftward. The tray gear 5g meshes with the first stage gear 41a, and the semicircular gear 35 is disengaged from the third stage gear 41c. Then, the drive of the motor 45 moves the disc tray 5 to the exposure position.

  As shown in FIGS. 13 and 14, when the slider 25 slides to the core engagement position by driving the motor 45, the first and second base pins 33a and 33b of the rotary base 33 are moved to the first and second guide holes 25a. , 25b, and the rotation base 33 is rotated about the rotation shaft 33c in the direction B in FIG. 13 is a lower side sectional view, FIG. 14 is a right side sectional view, FIG. 13 (B) is an enlarged view of a range surrounded by a two-dot chain line in FIG. 13 (A), and FIG. 14 (B) is a diagram. It is an enlarged view of the range enclosed with the dashed-two dotted line of 14 (A). When the slider 25 slides to the core engagement position, the disc tray 5 is moved to the storage position (see FIGS. 1 and 15).

  When the rotary base 33 is rotated, the pickup base 7 is accordingly rotated in the direction B in FIG. 14 to the rib insertion position (base intermediate position), and the positioning rib 9b of the chucking core 9 is the slit of the disc holder 20. 20e is inserted and inserted into the disc hole 3a of the CD3. When the positioning rib 9b is inserted through the slit 20e, the engaging portion 9c contacts the engaging claw 20f, the engaging rib 20d spreads outward, and when the positioning rib 9b is further moved, the engaging rib 20d becomes the original. Return to shape. Thereby, the engaging portion 9c and the engaging claw 20f are engaged, and in this state, the positioning rib 9b is inserted into the disc hole 3a (held by the chucking core 9).

  As shown in FIGS. 15 and 16, when the slider 25 is slid to the clamp release position by driving the motor 45, the first slider pin 25 c of the slider 25 is brought into contact with the contact portion 21 e of the first holder clamper 21 and the second holder. It enters between the contact portion 22e of the clamper 22. As a result, the first holder clamper 21 is rotated in the direction D in FIG. 15 and the second holder clamper 22 is rotated in the direction C in FIG. 15 to the holder holding release position. The holding of the holder 20 is released. At this time, the disc holder 20 is sandwiched between the CD 3 held by the chucking core 9 and the chucking core 9. As a result, the disk holder 20 also moves in accordance with the movement (rotation) of the chucking core 9 (pickup base 7). 15 is a front view, FIG. 16 is a lower side cross-sectional view, and FIG. 16B is an enlarged view of a range surrounded by a two-dot chain line in FIG.

  As shown in FIGS. 17 and 18, when the slider 25 slides to the disk holding position as the second position where the pickup base 7 is positioned at the reproduction position by the drive of the motor 45, the first and second bases of the rotary base 33. The pins 33a and 33b are guided by the first and second guide holes 25a and 25b, and the rotation base 33 is rotated about the rotation shaft 33c. 17 is a front view, FIG. 18 is a lower side cross-sectional view, and FIG. 18B is an enlarged view of a range surrounded by a two-dot chain line in FIG.

  When the rotation base 33 is rotated, the pickup base 7 is rotated to the reproduction position accordingly, and the upper part of the chucking core 9 and the upper part of the disc holder 20 are inserted into the insertion recess 10c of the turntable 10, The engaging projection 10 d of the turntable 10 is inserted into the engaging hole 9 d of the chucking core 9. In this state, the turntable 10 to which the metal plate is attached is held by the magnetism of the magnet 16 of the chucking core 9 and the lower surface of the turntable 10 contacts the upper surface of the CD 3. As a result, the CD 3 is positioned in the vertical direction. When the spindle motor 8 rotates during CD3 reproduction, the CD3, chucking core 9, turntable 10 and disk holder 20 rotate together.

  The operation of the optical disc apparatus 2 configured as described above will be described. In order to reproduce the CD3, first, the CD3 is loaded into the disc tray 5. At this time, if the CD 3 is pressed downward, the holding rib 20c of the disc holder 20 is deformed inward, and the holding rib 20c is inserted through the disc hole 3a, and after that, the holding rib 20c is returned to the original. Return to shape. As a result, CD3 is held by the holding rib 20c. Note that the CD 3 is removed from the disc holder 20 after the holding rib 20c is deformed inward with a finger or the like.

  Next, when the open / close switch 14 is operated to move the disc tray 5 from the exposed position (see FIGS. 2 and 7) toward the storage position (see FIGS. 1 and 15), the first slider pin 25c of the slider 25 is moved. Is guided by the first guide rib 5c, the second slider pin 25d is guided by the second guide rib 5d, and the slider 25 slides from the disk take-out position (see FIG. 8) to the gear meshing position (see FIG. 12). When the slider 25 slides to the gear meshing position, the semicircular gear 35 meshes with the third gear 41c of the tray gear 41 of the tray moving mechanism 40. At this time, the control unit 15 drives the motor 45 so that the motor pulley 44 rotates in the clockwise direction, and the motor 45 drives the motor 45 via the motor pulley 44, the belt 43, the relay pulley 42, and the tray gear 41. Thus, the semicircular gear 35 rotates clockwise, and the slider 25 engaged with the semicircular gear 35 slides to the right.

  When the slider 25 slides to the core engagement position (see FIG. 13) by driving the motor 45, the pickup base 7 is rotated, and the positioning rib 9b of the chucking core 9 is inserted through the slit 20e of the disk holder 20. The CD3 is inserted into the disc hole 3a of the CD3, and the CD3 is positioned in the radial direction by the positioning rib 9b. When the positioning rib 9b is inserted through the slit 20e, the engaging portion 9c contacts the engaging claw 20f, the engaging rib 20d spreads outward, and when the positioning rib 9b is further moved, the engaging rib 20d becomes the original. Return to shape. Thereby, the engaging portion 9c and the engaging claw 20f are engaged, and in this state, the positioning rib 9b is inserted into the disc hole 3a (held by the chucking core 9). When the slider 25 slides to the core engagement position, the disc tray 5 is moved to the storage position (see FIGS. 1 and 15).

  When the slider 25 slides to the clamp release position (see FIG. 16) by driving the motor 45, the first and second holder clampers 21 and 22 are rotated to the holder holding release position by the first slider pin 25c of the slider 25, The holding of the disc holder 20 by the first and second holder clampers 21 and 22 is released.

  When the slider 25 slides to the disk holding position (see FIG. 18) by driving the motor 45, the pickup base 7 is rotated, the turntable 10 is held by the magnet 16 of the chucking core 9, and the upper surface of the CD 3 The lower surface of the turntable 10 comes into contact with. As a result, the CD 3 is positioned in the vertical direction. When the spindle motor 8 rotates during disk reproduction, the CD 3, the turntable 10, and the disk holder 20 rotate together.

  Thus, when the disc tray 5 moves between the exposure position and the storage position and when the pickup base 7 rotates between the retracted position and the rib insertion position, the CD 3 can be held by the disc holder 20. Furthermore, when the pickup base 7 rotates between the rib insertion position and the reproduction position and during CD3 reproduction, the CD3 is positioned in the radial direction by the positioning rib 9b of the chucking core 9, so that the main body case 4 The CD 3 can be accurately held by the chucking core 9 without dropping the CD 3 when the CD 3 is placed vertically or horizontally, and the CD 3 can be held by other members (disc holder 20) during CD 3 playback. It can be held by the chucking core 9 without going through. Further, since the positioning rib 9b and the disc holder 20 both hold the disc hole 3a of the CD 3, even when the optical disc has a different diameter or a non-circular optical disc, the positioning rib 9b and the disc holder 20 are accurately held and positioned on the chucking core 9. Can be made.

  When the slider 25 slides to the gear meshing position, the semicircular gear 35 meshes with the third gear 41c of the tray gear 41, and when the slider 25 slides between the gear meshing position and the disk holding position, Since the slide is performed by driving the motor 45, the motor 45 can be driven between the gear meshing position where the load applied to the slider 25 is large and the disk holding position in order to rotate the pickup base 7.

  Further, since the positioning rib 9b is inserted into the disc hole 3a in a state where the engaging portion 9c of the chucking core 9 and the engaging claw 20f of the disc holder 20 are engaged, the CD 3 is inserted into the positioning rib 9b and the disc holder. There is no state in which the main body case 4 is placed vertically, and the CD 3 can be reliably held by the chucking core 9 even when the main body case 4 is placed vertically.

  Further, since the first and second holder clampers 21 and 22 are rotated from the holder holding position to the holder holding release position by the first slider pin 25c of the slider 25, the pickup base 7 is moved to the first and second pickups during CD3 playback. Since there is no contact with the second holder clampers 21 and 22, rotation of the pickup base 7 is impeded compared to a type in which the pickup base is brought into contact with the holder clamper and the holding of the disc holder by the holder clamper is released. In addition, it is possible to prevent the vibration absorption performance of the pickup base 7 by the damper 31 from being lowered.

  In the above embodiment, three positioning ribs 9b of the chucking core 9 and holding ribs 20c of the disc holder 20 are formed, but the number of these is not limited to three and can be changed as appropriate. .

  In the above embodiment, the tray moving mechanism 40 includes the tray gear 41, the relay pulley 42, the belt 43, the motor pulley 44, and the motor 45. However, the number of gears, pulleys, and the like can be changed as appropriate. .

1 is an external perspective view of an optical disc apparatus embodying the present invention. 1 is an external perspective view of an optical disc apparatus with a disc tray exposed. FIG. It is a perspective view which shows a disc tray, a disc holder, a 1st holder clamper, and a 2nd holder clamper. It is the perspective view and lower side sectional drawing which show a disc holder. It is the perspective view and lower side sectional drawing which show a chucking core. It is the perspective view and lower surface sectional drawing which show the chucking core and disk holder of the state by which the positioning rib was penetrated by the slit. It is a front view which shows the optical disk apparatus when a disk tray is located in an exposure position. It is a lower surface sectional view showing an optical disc device when a disc tray is located in an exposure position. It is right side sectional drawing which shows an optical disk apparatus when a disk tray is located in an exposure position. It is a perspective view which shows a slider and a rotation base. It is a front view which shows an optical disk device when a disk tray is located in a storing position and a slider is located in a gear meshing position. FIG. 6 is a lower side cross-sectional view showing the optical disc apparatus when the disc tray is located at the storage position and the slider is located at the gear meshing position. FIG. 6 is a lower side cross-sectional view showing the optical disc apparatus when the disc tray is located at the storage position and the slider is located at the core engagement position. FIG. 6 is a right side cross-sectional view showing the optical disc apparatus when the disc tray is located at the storage position and the slider is located at the core engagement position. It is a front view which shows an optical disk apparatus when a disk tray is located in a storing position and a slider is located in a clamp release position. FIG. 5 is a lower side cross-sectional view showing the optical disc apparatus when the disc tray is located at the storage position and the slider is located at the clamp release position. FIG. 6 is a front view showing the optical disc apparatus when the disc tray is located at the storage position and the slider is located at the disc holding position. FIG. 5 is a lower side sectional view showing the optical disc apparatus when the disc tray is located at the storage position and the slider is located at the disc holding position.

Explanation of symbols

2 Optical disk device 3 CD (optical disk)
4 Body case (housing)
5 Disc tray 5c First guide rib (slider guide part)
5d Second guide rib (slider guide part)
7 Pickup base 8 Spindle motor 9 Chucking core 9b Positioning rib (disc positioning holding part)
9c Engagement part 20 Disc holder 20a Main part (mounting part)
20b Holder rib (insertion part)
20c Holding rib (holding part)
20e slit (insertion hole)
20f engaging claw 21 first holder clamper 21d, 22d spring portion (biasing means)
22 Second holder clamper 25 Slider 25c First slider pin (clamper displacement part)
40 Tray moving mechanism (sliding mechanism)

Claims (7)

A spindle motor that rotates an optical disc, an optical pickup, and a pickup base that is freely displaceable between a reproduction position for recording and / or reproducing data on the optical disc and a retraction position that is retracted from the reproduction position;
A chucking core provided in the spindle motor and holding the optical disc;
A disc tray movable between an exposed position exposed outside the housing when the optical disc is attached and detached and a storage position stored inside the housing; and
In the optical disc apparatus for moving the pickup tray to the playback position after moving the disc tray to the storage position,
Provided in the chucking core, and when the pickup base is displaced between a base intermediate position between the retracted position and the reproduction position and the reproduction position, the pickup base is inserted into a disk hole of the optical disk and A disk positioning holding unit for holding the optical disk and positioning the optical disk in the radial direction;
Projecting from the disk loading surface of the disk tray, the disk tray moves between the exposed position and the storage position, and the pickup base moves between the retracted position and the base intermediate position. A disc holder that is inserted into the disc hole to hold the optical disc when
The optical disc apparatus, wherein the optical disc is held by the disc holder when the optical disc is held by the disc positioning holding portion. The disc holder is formed with a mounting portion on which the optical disc is placed, an insertion portion inserted into the disc hole, a diameter larger than the disc hole and elastically deformable, and is inserted through the disc hole. A holding portion for holding the optical disc, and an insertion hole through which the disc positioning holding portion is inserted,
When the pickup base is displaced between the base intermediate position and the reproduction position, the disk positioning holding part is inserted through the insertion hole and protrudes from the mounting part to be inserted into the disk hole. 2. The optical disk apparatus according to claim 1, wherein   When the pickup base provided on the disc holder is displaced from the retracted position to the base intermediate position, it engages with an engaging portion provided on the chucking core, and the pickup base is displaced to the reproduction position. The optical disk apparatus according to claim 1, further comprising an engaging claw that releases the engagement with the engaging portion when it is performed. A slider slidable between a first position for displacing the pickup base to the retracted position and a second position for displacing the pickup base to the reproduction position;
Provided on the disc tray, the slider is slid to the first position when the disc tray is moved to the exposed position, and the slider is moved when the disc tray is moved from the exposed position toward the storage position. 4. The optical disk apparatus according to claim 1, further comprising: a slider guide portion that slides the slider to a slider intermediate position between the first position and the second position. 5. A holder clamper that is freely displaceable between a holder holding position for holding the disc holder and a holder holding releasing position for releasing the holding;
Biasing means for biasing the holder clamper toward the holder holding position;
The slider is provided on the slider, and after the slider slides from the first position to a third position for displacing the pickup base to the base intermediate position, the slider abuts on the holder clamper to move the holder clamper to the holder holding release position. A clamper displacement portion that is displaced to
5. The optical disc apparatus according to claim 4, wherein the disc holder released by the holder clamper is positioned between the chucking core and the optical disc and is held by the chucking core .   6. The optical disc apparatus according to claim 4, further comprising a slide mechanism that slides the slider between the slider intermediate position and the second position.   When the slider is slid from the slider intermediate position toward the second position by the slide mechanism, the disk tray is moved to the storage position, and the slider is moved from the second position by the slide mechanism. 7. The optical disc apparatus according to claim 6, further comprising a tray guide portion that moves the disc tray from the storage position toward the exposure position when the slider is slid toward the slider intermediate position.

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