JP2008305480A - Optical disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical disk drive which can certainly reduce a chucking noise. <P>SOLUTION: A slider 20 slides between a left slide position and a right slide position by rotation of a motor. A traverse mechanism rotates from a retracting position to a reproduction position when the slider 20 slides to the right slide position. First and second cam holes 20a and 20d are formed when first and second lifter bosses 23a and 23b of the traverse mechanism are inserted in the slider 20. First and second deforming parts 20b and 20e are formed in the slider 20. Loads are given to first and second lifter bosses 23a and 23b by the first and second deforming parts 20b and 20e when the slider 20 slides towards the right slide position and the traverse mechanism rotates in front of the reproduction position. Rotation speed of the traverse mechanism 10 falls off during the load is given to the first and second lifter bosses 23a and 23b. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

  In the optical disk apparatus, an optical disk such as a CD or a DVD is used as a storage medium. The optical disc apparatus is configured to incorporate a disc tray for loading an optical disc in a movable manner with respect to the main body case, pull out the disc tray to the outside of the main body case when the optical disc is attached or detached, and store the disc tray inside the main body case when used. The A spindle motor that rotates the optical disk loaded on the disk tray at high speed is provided inside the main body case. The spindle motor holds an optical disk and is attached with a turntable in which a magnet is embedded, and an iron plate as a magnetic body attracted by the magnetic force of the magnet of the turntable is provided inside the main body case. A clamper is arranged.

  A traverse mechanism having a spindle motor and an optical pickup is provided so as to be rotatable between a reproduction position for reproducing an optical disk and a retreat position retracted from the reproduction position, and after the disk tray is stored in the main body case. The traverse mechanism rotates to the playback position. When the traverse mechanism rotates to the reproduction position, the iron plate of the clamper is attracted by the magnetic force of the magnet of the turntable, and the optical disk is sandwiched between the turntable and the clamper. When replacing the optical disk, the traverse mechanism is displaced to the retracted position, the turntable and the clamper are separated, and the disk tray is pulled out of the main body case.

A chucking sound is generated when the clamper's iron plate is attracted by the magnetic force of the magnet of the turntable, and this chucking sound has a problem of giving the user unpleasant feeling. For this reason, techniques for reducing the chucking sound have been proposed (see, for example, Patent Documents 1 and 2).
Japanese Patent Laying-Open No. 2005-312148 JP 2007-042189 A

  However, in Patent Document 1, since the pulse cycle is switched according to the time from the start of loading, when the tray is pushed by the operator during loading, the pulse cycle is switched at a timing different from the desired timing. There is a problem that the traverse mechanism rotates to the reproduction position before the cycle is switched. In this case, the chucking sound cannot be reduced. In Patent Document 1, a detection unit is provided, and the pulse period is switched when detected by the detection unit, but there is no specific description of the detection unit. Furthermore, there is a problem that the cost is increased by providing the detection means.

  Further, in Patent Document 2, the tray loading / unloading path is divided into a plurality of sections, and the tray loading / unloading speed is switched for each section. In the section near the loading position, the tray loading speed is low. The traverse mechanism rotates to the reproduction position after the tray has moved to the carry-in position, and rotates using a motor for driving the tray as a drive source. For this reason, when the tray carry-in speed when moving to the carry-in position is lowered, the traverse mechanism rotates at a low speed, and the traverse mechanism can be rotated to the regeneration position without sufficient driving force of the motor. There was a problem that I could not.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an optical disc apparatus that can reliably reduce the chucking sound.

  In order to achieve the above object, an optical disc apparatus according to the present invention includes a traverse mechanism having a spindle motor that rotates an optical disc by a lifting / lowering means, and a retreat position in which the optical disc is reproduced and retracted downward from the reproduction position. In an optical disk apparatus that moves up and down between positions, a turntable that is provided in the spindle motor and holds the optical disk; and the optical disk is sandwiched between the turntable when the traverse mechanism is raised to the reproduction position And a load applying means for applying a load to the traverse mechanism to reduce the ascent speed of the traverse mechanism when the traverse mechanism is raised to just before the reproduction position. .

  The traverse mechanism is raised and lowered by rotation or movement. Examples of the optical disk include CD, DVD, dual disk, and SACD (hybrid disk). Furthermore, it is preferable to provide a magnet on one of the turntable and the clamper and a magnetic member that is attracted by the magnetic force of the magnet on the other.

  The elevating means includes a slider provided slidably; a boss provided in the traverse mechanism; and provided in the slider through which the boss is inserted, and according to the slide of the slider A lifting cam hole that guides the boss part to raise and lower the traverse mechanism; and the load applying means is provided in the slider, and has a small shape that makes the width of the lifting cam hole smaller than the boss part; A deformable portion that can be deformed into a large shape that allows the passage of the boss portion by making the width of the elevating cam hole substantially the same as the boss portion; and an urging force that urges the deformed portion toward the small shape And means.

  Further, it is preferable that the deforming portion is provided at a portion through which the boss portion passes when the traverse mechanism is raised to just before the reproduction position.

  Moreover, it is preferable that the said deformation | transformation part is integrally formed in the said slider, or is comprised separately from the said slider, and is comprised from the deformation member attached to the said slider. In addition, when forming the said deformation | transformation part integrally with the said slider, it is preferable to form the escape hole for making the deformation | transformation of the said deformation | transformation part easy in the said slider.

  According to the optical disk device of the present invention, when the traverse mechanism is raised to just before the reproduction position, a load is applied to the traverse mechanism to reduce the ascent speed of the traverse mechanism. Compared with the one that raises to the reproduction position, the chucking sound that occurs when the traverse mechanism rises to the reproduction position and the turntable contacts the clamper can be reduced.

  In addition, since the deformable deformable portion provided on the slider applies a load to the boss portion provided on the traverse mechanism and reduces the ascent speed of the traverse mechanism, the chucking sound can be easily reduced with a simple configuration. can do.

  As shown in FIGS. 1 and 2, the optical disk device 2 accesses a CD (optical disk) 3 to record and reproduce 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.

  In the case 4 of the optical disc apparatus 2, the disc tray 5 is stored in the case 4 when the CD 3 is played back (see FIG. 1) and exposed to the outside of the case 4 (see FIG. 2). It is attached to be movable between. Inside the case 4, a traverse mechanism 10 including an optical pickup 6, a pickup base 7, a spindle motor 8 and a turntable 9, a circuit board, and the like are incorporated. The case 4 includes an upper cover 4a and a lower cover 4b (see FIG. 4). The optical pickup 6, the pickup base 7, the spindle motor 8, and the turntable 9 are not shown in FIGS. 1 and 2, and are shown in FIGS.

  On the front surface of the case 4 are provided various switches such as a reproduction switch 12 for reproducing CD3, a stop switch 13 for stopping reproduction of CD3, and an opening / closing switch 14 for opening / closing the disk tray 5. A plurality of switches including these opening / closing switches 14 are connected to a control unit 15 that performs main control of the optical disc apparatus 2. When the open / close switch 14 is operated, the disc tray 5 is moved by a tray moving mechanism 30 described later. 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, instead of being provided on the front surface of the case 4.

  The disc tray 5 is loaded with the CD 3 and has a recess corresponding to the outer diameter of the CD 3. An insertion hole 5a through which the spindle motor 8 and the turntable 9 are inserted when the disk tray 5 is located at the storage position is formed at the center of the disk tray 5, and the optical pickup 6 accesses the CD 3 continuously to the insertion hole 5a. An access opening 5b is formed.

  As shown in FIGS. 3, 4, and 5, the optical pickup 6 includes an objective lens 16 that condenses the laser light emitted from the light emitting element on the recording surface of the CD 3, and is attached to the pickup base 7. The holding shaft 17 is movably held. The optical pickup 6 is moved in the axial direction (A direction in FIG. 3) of the holding shaft 17 which is the radial direction of the CD 3 by a known moving mechanism.

  The turntable 9 is attached to the rotating shaft of the spindle motor 8. On the upper surface of the turntable 9, an anti-slip sheet 18 is attached to prevent the CD 3 from slipping during CD3 reproduction. The turntable 9 is formed with a chucking core portion 9a for holding the CD3. The chucking core portion 9a is formed with an engagement hole 9b into which the engagement convex portion 25d of the clamper 25 is inserted. A magnet 19 is embedded in the chucking core portion 9a.

  Inside the case 4, a slider 20 for rotating the traverse mechanism 10 is provided. The slider 20 is provided so as to be slidable in the left-right direction. As will be described in detail later, the traverse mechanism 10 rotates in accordance with the slide of the slider 20.

  On the lower surface of the disc tray 5, a first guide rib 5c for guiding the first slider boss 20i of the slider 20 and a second guide rib 5d for guiding the second slider boss 20j are provided upright. Each of the guide ribs 5c and 5d is erected two by two, and each of the bosses 20i and 20j enters between the two ribs. Thus, when the disc tray 5 moves in the front-rear direction (vertical direction in FIG. 3), the bosses 20i, 20j are guided in the left-right direction by the guide ribs 5c, 5d, and the slider 20 slides in the left-right direction.

  Four dampers 21 and screws 22 are attached to the pickup base 7. Two screws 22 on the rear side (upper side in FIG. 3) are screwed to a mounting portion inside the case 4 via a damper 21, and the pickup base 7 is centered on the two screws 22. 5 is attached so as to be rotatable in the direction B in FIG.

  Two screws 22 on the front side (lower side in FIG. 3) are attached to a lifter 23 via a damper 21. That is, the lifter 23 is attached to the pickup base 7.

  A first lift turbo 23a inserted into the first cam hole 20a of the slider 20 and a second lift turbo 23b inserted into the second cam hole 20d are formed on the front surface of the lifter 23. A rotary shaft 23c is formed on the left and right side surfaces of the lifter 23, and the lifter 23 is attached to the case 4 so as to be rotatable in the direction B in FIG. 5 around the rotary shaft 23c. The rotary shaft 23c is not restricted in the vertical position in FIGS. 3 and 5, and when the pickup base 7 rotates around the upper screw 22 in FIG. 5, the rotary shaft 23c is in FIG. Move up and down. As a result, when the lifter 23 rotates, the pickup base 7 rotates in the direction B in FIG. 5 around the two screws 22 on the rear side (upper side in FIG. 3). In the present embodiment, the traverse mechanism 10 having the pickup base 7 and the lifter 23 rotates between a retreat position (see FIGS. 4 and 5) and a reproduction position (see FIG. 11) according to the slide of the slider 20. . The first and second lift turbos 23a and 23b are not formed integrally with the lifter 23, and lifter pins as separate members are attached to the lifter 23 instead of the first and second lift turbos 23a and 23b. May be.

  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 25a of the clamper 25 is formed on the bottom surface of the cover concave portion 4c. . The clamper 25 rotates in contact with the CD3 during reproduction of the CD3, and includes a main body portion 25a and a flange portion 25b. The main body portion 25a is formed with a smaller diameter than the insertion hole 4d, and the flange portion 25b is formed with a larger diameter than the insertion hole 4d. An insertion concave portion 25c into which the upper portion of the chucking core portion 9a is inserted is formed on the bottom surface of the main body portion 25a, and an engagement convex portion 25d to be inserted into the engagement hole 9b is erected in the insertion concave portion 25c. Has been. An iron plate 26 is attached to the main body portion 25a, and this iron plate 26 is attracted by the magnetic force of the magnet 19 embedded in the chucking core portion 9a. As a result, the clamper 25 is held by the chucking core portion 9a, and the CD3 is sandwiched between the turntable 9 and the clamper 25. Note that a sheet (not shown) that covers the cover recess 4c is attached to the upper cover 4a, so that the clamper 25 does not fall from the upper cover 4a. Moreover, in FIG.1 and FIG.2, illustration of the cover recessed part 4c is abbreviate | omitted.

  As shown in FIGS. 4 and 6, the slider 20 is easily deformed by the first cam hole 20a into which the first lift turbo 23a of the lifter 23 is inserted, the first deformation portion 20b, and the first deformation portion 20b. The first relief hole 20c for the second deformation, the second cam hole 20d into which the second riff turbos 23b is inserted, the second deformation portion 20e, and the second relief for facilitating the deformation of the second deformation portion 20e. A hole 20f is formed.

  The first deforming portion 20b has a small shape (see FIGS. 4 and 9) in which the gap (the width of the first cam hole 20a) with the upper wall surface 20g of the first cam hole 20a is smaller than that of the first riff turbos 23a. The gap with the upper wall surface 20g is substantially the same as that of the first riff turbos 23a and can be transformed into a large shape (see FIG. 10) that allows the first riff turbos 23a to pass through. It is formed to have. In the present embodiment, the urging means for urging the first deformable portion 20b toward the small shape is configured by the spring property of the first deformable portion 20b.

  Similarly to the first deformation portion 20b, the second deformation portion 20e has a small shape in which the gap (the width of the second cam hole 20d) with the upper wall surface 20h of the second cam hole 20d is smaller than that of the second riff turbos 23b ( 4 and FIG. 9) and a large shape (see FIG. 10) in which the gap between the upper wall surface 20h is substantially the same as that of the second riff turbos 23b and allows the second riff turbos 23b to pass through. It is formed to have a spring property toward the shape. The first and second deforming portions 20b and 20e are formed at positions where the traverse mechanism 10 comes into contact with the first and second riff turbos 23a and 23b when the traverse mechanism 10 rises to just before the reproduction position. In the present embodiment, the urging means that urges the second deforming portion 20e toward the small shape is configured by the spring property of the second deforming portion 20e. In place of the spring property of the first and second deformable portions 20b and 20e, a spring member such as a coil spring is provided so that the first and second deformable portions 20b and 20e are biased toward the small shape by the coil spring. It may be. Further, the shapes of the first and second deformable portions 20b and 20e can be appropriately changed according to the set amount of the load applied to the first and second lift turbos 23a and 23b.

  On the upper surface of the slider 20, a first slider boss 20i guided by the first guide rib 5c of the disc tray 5 and a second slider boss 20j guided by the second guide rib 5d are provided upright. A slider gear 20 k is formed on the front surface of the slider 20.

  When the disc tray 5 is located at the exposed position (see FIG. 3), the second slider boss 20j is guided by the second guide rib 5d, and the slider 20 is located at the left slide position (see FIG. 4). When the slider 20 is located at the left slide position, the traverse mechanism 10 is located at the retracted position.

  When the disc tray 5 moves from the exposure position (see FIGS. 2 and 3) toward the storage position (see FIG. 1), the second slider boss 20j is guided by the second guide rib 5d, and the slider 20 moves to the left slide position. Slide to the right.

  As shown in FIGS. 3 and 4, the slider gear 20 k meshes with a semicircular semicircular gear 29 that is rotatably provided inside the case 4. The semicircular gear 29 meshes only with the slider gear 20k when the slider 20 is positioned between the left slide position (see FIG. 4) and the gear meshing position (see FIG. 7). When the slider 20 slides from the left slide position to the gear meshing position and the semicircular gear 29 rotates, the semicircular gear 29 meshes with the third gear 31c of the tray moving mechanism 30. The semicircular gear 29 meshes with the third gear 31c when the slider 20 slides between the gear meshing position and the right slide position (see FIG. 11).

  As shown in FIGS. 7 and 8, a tray moving mechanism 30 that moves the disc tray 5 is provided inside the case 4. The tray moving mechanism 30 includes a tray gear 31, a relay pulley 32, a belt 33, a motor pulley 34, and a motor 35. The tray gear 31 and the relay pulley 32 are rotatably attached to a support shaft (not shown). The tray gear 31 is composed of a three-stage gear, and is a first-stage gear 31a, a second-stage gear 31b, and a third-stage gear 31c in order from the uppermost stage in FIG. The first stage gear 31 a meshes with a tray gear 5 e formed on the disc tray 5. In FIG. 8, the belt 33, the motor pulley 34, and the motor 35 are not shown in order to avoid cluttering the drawing.

  A relay gear 32a is formed on the relay pulley 32, and the relay gear 32a meshes with the second gear 31b. The relay pulley 32 is provided concentrically with the semicircular gear 29. The motor pulley 34 is attached to the motor shaft of the motor 35, and a belt 33 is wound around the relay pulley 32 and the motor pulley 34. The motor 35 is connected to the control unit 15, and the drive is controlled by the control unit 15. The controller 15 drives the motor 35 when the open / close switch 14 is operated.

  When the motor 35 is driven and the motor pulley 34 rotates, the relay pulley 32 rotates through the belt 33, and the tray gear 31 meshed with the relay gear 32a rotates. As the tray gear 31 rotates, the disk tray 5 moves in the front-rear direction (vertical direction in FIG. 7). In the present embodiment, when the motor 35 is driven so that the motor pulley 34 rotates in the clockwise direction, the disc tray 5 moves from the exposed position toward the storage position, and the motor pulley 34 rotates in the counterclockwise direction. When 35 is driven, the disc tray 5 moves from the storage position toward the exposure position.

  When the open / close switch 14 is operated when the disc tray 5 is located at the exposure position (see FIG. 3), the control unit 15 drives the motor 35 so that the motor pulley 34 rotates in the clockwise direction. By driving the motor 35, the disc tray 5 moves toward the storage position.

  Immediately before the disc tray 5 moves to the storage position, the slider 20 is guided by the first and second guide ribs 5c and 5d of the disc tray 5, and the gear meshing position where the semicircular gear 29 meshes with the third gear 31c. Slide until. When the slider 20 moves to the gear meshing position, the tray gear 5e is disengaged from the first gear 31a. When the semicircular gear 29 meshes with the third gear 31c, the slider 35 moves to the right via the motor pulley 34, the belt 33, the relay pulley 32, the tray gear 31, and the semicircular gear 29 by driving the motor 35. Slide. When the slider 20 slides to the right from the gear meshing position, the first slider boss 20i comes into contact with the first guide rib 5c, and the force of the slider 20 sliding to the right causes the disc tray 5 to move backward (upward in FIG. 7). ) To the storage position.

  When the slider 20 slides between the gear meshing position (see FIGS. 7 and 8) and the right slide position (see FIG. 11), the slider 20 slides by driving the motor 35, and the gear meshing position and the left slide position (see FIG. 3 and FIG. 4), it slides by the guide ribs 5c and 5d of the disc tray 5. In the present embodiment, the slide mechanism that includes the motor 35 and slides the slider 20 by the rotation of the motor 35 is configured by the tray moving mechanism 30.

  When the disk tray 5 is moved from the storage position toward the exposure position, the motor 35 is driven so that the motor pulley 34 rotates counterclockwise, and the slider 20 is slid leftward. When the slider 20 slides leftward to the gear meshing position, the first slider boss 20i comes into contact with the first guide rib 5c, and the disc tray 5 is moved forward (FIG. 7) by the force of the slider 20 sliding leftward. The tray gear 5e meshes with the first gear 31a, and the semicircular gear 29 is disengaged from the third gear 31c. Then, the drive of the motor 35 moves the disc tray 5 to the exposure position.

  As shown in FIG. 9, when the slider 20 slides from the gear meshing position (see FIG. 8) toward the right slide position by driving the motor 35, the first and second lift turbos 23 a and 23 b of the lifter 23 are the first. The lifter 23 is guided by the second cam holes 20a and 20d, and is rotated in the direction C in FIG. 5 about the rotation shaft 23c.

  When the lifter 23 is rotated, the traverse mechanism 10 is rotated in the direction C in FIG. 5 toward the reproduction position. That is, when the slider 20 slides toward the right slide position, the first lift turbo 23a of the lifter 23 is guided through the first cam hole 20a, and the traverse mechanism 10 is rotated toward the reproduction position.

  When the first riff turbos 23a is guided between the upper wall surface 20g of the first cam hole 20a and the first deforming portion 20b, the width of the first cam hole 20a is smaller than the diameter of the first riff turbos 23a. Therefore, when passing through this portion, the lifter 23 rotates while deforming the first deformation portion 20b.

  As shown in FIG. 10, when the first deforming portion 20b is deformed, a load is applied to the first riff turbos 23a due to the spring property of the first deforming portion 20b. When a load is applied to the first lift turbo 23a, the rotation speed of the lifter 23 decreases, and the rotation speed of the traverse mechanism 10 decreases accordingly. That is, the rotational speed of the traverse mechanism 10 decreases while the first deforming portion 20b applies a load to the first riff turbos 23a.

  Similarly, when the second riff turbos 23b is guided to the space between the upper wall surface 20h of the second cam hole 20d and the second deforming portion 20e, the width of the second cam hole 20d becomes equal to that of the second riff turbos 23b. Since the diameter is smaller than the diameter, when passing through this portion, the lifter 23 rotates while deforming the second deforming portion 20e, and the rotational speed of the traverse mechanism 10 decreases.

  As shown in FIG. 11, when the slider 20 slides to the right slide position, the traverse mechanism 10 is rotated to the reproduction position. In the present embodiment, the raising / lowering means for raising and lowering the traverse mechanism 10 is the tray moving mechanism 30, the first and second guide ribs 5 c and 5 d of the disk tray 5, the slider 20, and the first and second lift turbos of the lifter 23. 23 a and 23 b and a semicircular gear 29.

  When the traverse mechanism 10 rotates to the reproduction position, the chucking core portion 9a is inserted into the disc hole 3a of the CD3. Further, the upper portion of the chucking core portion 9a is inserted into the insertion concave portion 25c of the clamper 25, and the engagement convex portion 25d of the clamper 25 is inserted into the engagement hole 9b of the chucking core portion 9a. In this state, the clamper 25 to which the iron plate 26 is attached is attracted and held by the magnetism of the magnet 19 of the chucking core portion 9a, and the lower surface of the clamper 25 contacts the upper surface of the CD3. As a result, the CD 3 is sandwiched between the turntable 9 and the clamper 25, and the CD 3 is positioned in the vertical direction. At this time, a so-called chucking sound is generated, which is a contact between the chucking core portion 9a and the clamper 25. When the spindle motor 8 rotates during CD3 reproduction, the CD3, turntable 9 and clamper 25 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. Next, the open / close switch 14 is operated to move the disc tray 5 from the exposure position (see FIGS. 2 and 3) toward the storage position (see FIG. 1). When the opening / closing switch 14 is operated, the control unit 15 rotates the motor 35.

  When the disk tray 5 is moved from the exposed position toward the retracted position by the rotation of the motor 35, the first slider boss 20i of the slider 20 is guided by the first guide rib 5c, and the second slider boss 20j is guided by the second guide rib 5d. Then, the slider 20 slides to the right from the left slide position.

  When the disk tray 5 moves toward the storage position, the slider 20 slides toward the right slide position by driving the motor 35, and the traverse mechanism 10 is rotated from the retracted position to the reproduction position by the slide of the slider 20. .

  When the slider 20 slides toward the right slide position and the traverse mechanism 10 rotates to just before the reproduction position, the first and second riff turbos 23a and 23b come into contact with the first and second deforming portions 20b and 20e. . Due to this contact, a load is applied to the first and second lift turbos 23a and 23b. While the load is applied to the first and second riff turbos 23a and 23b, the rotational speed of the traverse mechanism 10 decreases.

  When the traverse mechanism 10 rotates to the reproduction position, the clamper 25 to which the iron plate 26 is attached is held by the magnetism of the magnet 19 of the chucking core portion 9a, and the CD3 is sandwiched between the turntable 9 and the clamper 25. Is done.

  As described above, when the traverse mechanism 10 is rotated to just before the reproduction position, the rotation speed of the traverse mechanism 10 is reduced. Therefore, as compared with the optical disc apparatus of the type that rotates the traverse mechanism 10 to the reproduction position at a constant rotation speed. The speed when the chucking core portion 9a contacts the clamper 25 can be reduced. Thereby, the chucking sound generated when the chucking core part 9a contacts the clamper 25 can be reduced.

  In addition, the first and second deforming portions 20b and 20e formed on the slider 20 apply a load to the first and second lift turbos 23a and 23b to reduce the rotational speed of the traverse mechanism 10. Thus, the chucking sound can be easily reduced with a simple configuration as compared with the one that decreases the rotational speed of the traverse mechanism 10. Further, in the case where the rotational speed of the traverse mechanism 10 is decreased by time timing, when the disc tray 5 is pushed from the exposure position toward the storage position by the operator, the traverse mechanism 10 reproduces before the rotational speed is decreased. However, in the present invention, even when the disc tray 5 is pushed from the exposure position toward the storage position by the operator, the rotational speed of the traverse mechanism 10 is reliably reduced. be able to.

  In the above embodiment, the first and second cam holes 20a and 20d are formed in the slider 20. However, the number of cam holes formed in the slider 20 can be changed as appropriate, and the deforming portion and the lifter can be changed accordingly. The number of bosses can be changed as appropriate.

  Moreover, in the said embodiment, in order to make a deformation | transformation of the 1st, 2nd deformation | transformation parts 20b and 20e easy, although the 1st, 2nd escape holes 20c and 20f were formed, the 1st, 2nd deformation | transformation parts 20b, Only 20e may be formed, and the first and second escape holes 20c and 20f may not be formed.

  Furthermore, in the said embodiment, although the 1st, 2nd deformation | transformation part 20b, 20e was integrally formed in the slider 20, instead of the 1st, 2nd deformation | transformation part 20b, 20e, as shown in FIG. The spring (deformable member) 40 may be attached to the slider 20, and as shown in FIG. 12A, one end 40a of the leaf spring 40 is attached to the slider 20 and the other end 40b is in a free state. Further, the first and second escape holes 20c and 20f are formed in a shape in which the leaf spring 40 can be deformed. As shown in FIG. 12 (B), while the load is applied to the first and second riff turbos 23a, 23b by the leaf spring 40, the rotational speed of the traverse mechanism 10 decreases, so that the chucking core portion The chucking sound generated when 9a contacts the clamper 25 can be reduced. Further, without providing the leaf spring 40, the shape of the leaf spring 40 may be formed integrally with the slider 20 as a deformed piece.

  Further, as shown in FIG. 13, instead of the first and second deforming portions 20b and 20e, a torsion spring (deforming member) 42 may be attached to the slider 20, and as shown in FIG. The main body portion 42a wound with a torsion spring is attached to the slider 20, the first arm portion 42b is brought into contact with the slider 20, and the second arm portion 42c is brought into a free state. Further, the first and second escape holes 20c, 20f are formed in a shape that allows the torsion spring 42 to be deformed. As shown in FIG. 13B, the rotation speed of the traverse mechanism 10 decreases while the load is applied to the first and second riff turbos 23a and 23b by the second arm portion 42c. The chucking sound generated when the core part 9a contacts the clamper 25 can be reduced.

  Furthermore, in the above embodiment, the magnet 19 of the chucking core portion 9a holds the iron plate 26 of the clamper 25 to hold the CD3 between the turntable 9 and the clamper 25. However, the turntable 9 and the clamper 25 The method of sandwiching the CD3 between the two can be changed as appropriate, and the CD3 may be sandwiched by the dead weight of the clamper 25 without using the magnet 19 and the iron plate 26. It is effective.

  In the above embodiment, the tray moving mechanism 30 includes the tray gear 31, the relay pulley 32, the belt 33, the motor pulley 34, and the motor 35. However, the number of gears, pulleys, and the like can be changed as appropriate. .

  Furthermore, in the above-described embodiment, the traverse mechanism 10 is lifted and lowered by the slide of the slider 20, but the traverse mechanism 10 may be lifted and lowered by a gear mechanism, a link mechanism, or the like without being limited thereto.

  In the above embodiment, the present invention is applied to the optical disk apparatus 2 incorporated in a personal computer. However, the present invention can also be applied to a thin-type optical disk apparatus incorporated in a notebook personal computer, and further, such as a CD player and a DVD player. It can also be implemented in various players.

  FIG. 14 shows another embodiment. Constituent members similar to those of the embodiment shown in FIGS. 1 to 11 are denoted by the same reference numerals, and the detailed description thereof is simplified. In this embodiment, a rotating lever 45 is provided in place of the first and second deformable portions 20b and 20e. The rotation lever 45 is rotatably attached to the inside of the case 4 around the shaft portion 45a, and is biased toward the initial position (see FIG. 14A) by the coil spring 46. In the present embodiment, the first and second riff turbos 23a and 23b are formed so as to protrude from the front surface of the slider 20, and the rotary lever 45 is formed at a portion protruding from the front surface of the slider 20. Abut.

  The lower cover 4b is formed with two restriction pieces 4e for restricting the rotation of the rotary lever 45 by the coil spring 46 and two attachment pieces 4f to which one end of the coil spring 46 is attached. The rotation lever 45 is formed with an attachment portion 45b to which the other end of the coil spring 46 is attached, and a contact portion 45c that contacts the first and second lift turbos 23a and 23b, with the shaft portion 45a as the center. The rotation of the rotation lever 45 is restricted by the attachment portion 45b coming into contact with the restriction piece 4e. The contact portion 45c is formed in a shape that can be elastically deformed. Two rotation levers 45 and two coil springs 46 are provided, respectively, and are attached to the front of the slider 20.

  The slider 20 is formed with an abutment convex portion 20 </ b> L that abuts against the abutment portion 45 c and rotates the rotation lever 45 against the bias of the coil spring 46 when sliding toward the right slide position. . As shown in FIG. 14B, when the slider 20 slides toward the right slide position and the traverse mechanism 10 rotates until just before the reproduction position, the contact convex portion 20L contacts the contact portion 45c and rotates. The lever 45 rotates against the bias of the coil spring 46. And the 1st, 2nd riff turbos 23a and 23b contact | abut to the contact part 45c, and a load is provided to 1st, 2nd riff turbos 23a and 23b by this contact. While the load is applied to the first and second riff turbos 23a and 23b, the rotational speed of the traverse mechanism 10 decreases.

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 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 disassembled perspective view which shows a slider and a lifter. It is a front view which shows the optical disk apparatus when 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 first and second riff turbos come into contact with the first and second deformable portions. It is lower surface sectional drawing which shows an optical disk apparatus when the 1st, 2nd riff turbos deform | transformed the 1st, 2nd deformation | transformation part. FIG. 5 is a lower side cross-sectional view showing the optical disc apparatus when the slider is located at the right slide position and the traverse mechanism is located at the reproduction position. It is a lower surface sectional view showing an optical disk device of an embodiment which attached a leaf spring to a slider. It is a lower surface sectional view showing an optical disk device of an embodiment which attached a torsion spring to a slider. It is lower surface sectional drawing which shows the optical disk apparatus of embodiment provided with the rotation lever and the coil spring.

Explanation of symbols

2 Optical disk device 3 CD (optical disk)
8 Spindle motor 9 Turntable 10 Traverse mechanism 20 Slider 20a, 20d 1st, 2nd cam hole 20b, 20e 1st, 2nd deformation part 23 Lifter 23a, 23b 1st, 2nd lift turbo (boss part)
25 clamper 30 tray moving mechanism 35 motor 40 leaf spring (deformable member)
42 Torsion spring (deformable member)

Claims (5)

In an optical disc apparatus that raises and lowers a traverse mechanism having a spindle motor that rotates an optical disc between a reproduction position for reproducing the optical disc and a retreat position that is retracted downward from the reproduction position by an elevating means.
A turntable provided in the spindle motor and holding the optical disc;
A clamper for sandwiching the optical disc with the turntable when the traverse mechanism is raised to the reproduction position;
An optical disc apparatus comprising: a load applying unit configured to apply a load to the traverse mechanism to reduce a rising speed of the traverse mechanism when the traverse mechanism is raised to just before the reproduction position. The lifting means is
A slider provided slidably,
A boss provided in the traverse mechanism;
An elevating cam hole that is provided in the slider and through which the boss portion is inserted, and that guides the boss portion according to sliding of the slider to raise and lower the traverse mechanism;
The load applying means includes
A small shape that is provided on the slider and that makes the width of the lift cam hole smaller than the boss portion, and a large shape that allows the width of the lift cam hole to be substantially the same as the boss portion and allows the passage of the boss portion. A deformable portion that can be deformed, and
2. The optical disk apparatus according to claim 1, further comprising: an urging unit that urges the deforming portion toward the small shape.   3. The optical disc apparatus according to claim 2, wherein the deforming portion is provided at a portion through which the boss portion passes when the traverse mechanism is raised to a position immediately before the reproduction position.   4. The optical disc apparatus according to claim 2, wherein the deforming portion is formed integrally with the slider.   4. The optical disc apparatus according to claim 2, wherein the deforming portion is provided separately from the slider and is composed of a deforming member attached to the slider.

Images