JP2007293962A - Loading mechanism of disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a loading mechanism of a disk device with a simple mechanism wherein, an amount of eccentricity to a turn table is small and a clamp operation is stabilized. <P>SOLUTION: The loading mechanism of the disk device is constituted so that a disk guide part 3b retreats a disk 10 single body to the disk feeding direction to separate the disk 10 single body from a positioning member, a center hole 10a of the disk fits to a disk fitting part and the disk 10 is clamped by a clamper 6 pushed up by the turntable and the turntable 3a, in a process that a reproduction unit chassis rises up and the disk guide part 3b enters into the center hole 10a of the disk after the disk 10 single body is sent to the forward direction until it contacts the positioning member by providing the positioning member fixed to the chassis for the clamp operation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a loading mechanism of a disk device, and more particularly to a positioning means during reproduction.

  As a loading mechanism of a conventional disk device, a tray type loading mechanism is known in which a disk is placed on a tray and the tray is moved to convey the disk from the outside of the housing toward a reproduction position. This tray-type loading mechanism has a problem that a large tray is moved in and out of the casing, so that the mechanism becomes complicated and the apparatus becomes large. Therefore, a slot-in type loading mechanism in which a single disk is conveyed by a feed roller or a lever has come to be often used.

  In the slot-in type loading mechanism, when the disk is transported to the upper side of the turntable, it is brought into contact with the positioning member and stopped. Must be separated from the disc.

  In the disk drive device proposed in Japanese Patent Application Laid-Open No. 2006-12277, the contact member, which is the positioning member, is erected on the rotation arm, and the disk is brought into contact with the contact member and stopped. Slightly pivot away the contact member from the disk. This disk drive device has a problem that the mechanism is complicated to rotate the rotating arm, and the manufacturing cost is increased.

  In the disc centering device proposed in Japanese Patent Application Laid-Open No. 2003-257109, after the disc comes into contact with the stopper portion 21 or the contact piece 22 that is a positioning member and stops, the clamper moves in the direction of the turntable 6 and the clamper The disk is pulled back by contacting the edge of the center hole of the disk and separated from the stopper portion 21 or the contact piece 22.

  In this disk centering device, the center axis is aligned with the turn table by fitting the clamper to the turn table, and the center axis is aligned with the clamper by fitting the disk to the clamper. That is, the disc is indirectly centered on the turntable via the clamper. For this reason, the amount of eccentricity of the disc with respect to the turntable increases. However, when the disc is rotated at a high speed, there is a problem in that the reproduction function deteriorates due to touching.

Further, the disc is fed to the upper side of the turntable 6 in a cantilever state held by the guide 11 and the feed roller 10, and the disc is dropped onto the turntable 6 by lowering the feed roller 10 during clamping. As described above, since the disk is dropped at the time of clamping, there is a problem that a sound is generated at the time of clamping or the operation becomes unstable.
JP 2006-12277 A, paragraph 0090, paragraph 0091, FIG. 11, FIG. JP-A-2003-257109, paragraph 0007, paragraph 0011, paragraph 0020, FIG. 3, FIG. 5, FIG.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a loading mechanism for a disk device that has a simple mechanism, a small amount of eccentricity with respect to the turntable, and a stable clamping operation. There is to do.

  The loading mechanism of the disk device according to the present invention includes a disk transport means for feeding a disk alone until it abuts against a positioning member fixed to the chassis, a disk guide portion whose diameter decreases toward the tip, and a disk fitting portion at a lower portion thereof. A playback unit chassis that holds a disk motor having a turntable fixed to a rotating shaft, drive means for raising the playback unit chassis relative to the chassis, and a clamper supported by a member fixed to the chassis The disc guide portion is moved in the forward direction until the disc unit comes into contact with the positioning member, and then the disc guide portion is moved into the center hole of the disc in the process of raising the reproducing unit chassis. The single disk is moved backward with respect to the disk feeding direction and separated from the positioning member. In which the center hole of the disk is configured to clamp the disc by pushed up clamper and the turntable by the turntable as well as mating with the disk engaging portion Te.

  In the loading mechanism of the disk device, the reproducing unit chassis is supported by the sub chassis in a floating state by an elastic member, and the driving means drives the reproducing unit chassis via the sub chassis.

  In the loading mechanism of the disk device, the driving means rotates the sub chassis about one axis with respect to the chassis.

  In the loading mechanism of each of the disk devices, the clamper is mounted on a member fixed to the chassis so as to pass through a member fixed to the chassis.

  In the loading mechanism of each disk device, the clamper and the turntable clamp and clamp the disk by magnetic force.

  The loading mechanism of the disk device according to the present invention is simple in mechanism, has a small amount of eccentricity with respect to the turntable, and stabilizes the clamping operation.

  The best mode for carrying out the present invention will be described below with reference to examples.

  FIG. 1 is a plan view showing a loading mechanism of a disk apparatus according to a first embodiment of the present invention, with a part of the member being seen through, and FIG. 2 is a side view showing the loading mechanism of the disk apparatus shown in FIG.

  The chassis 1 shown in the figure supports the entire mechanism. The subchassis 2 is rotatably supported by the chassis 1 via a shaft 2a provided upright on the subchassis 2. A disc motor (not shown) in which the turntable 3 a is fixed to the rotating shaft is fixed to the reproduction unit chassis 3. The reproduction unit chassis 3 also supports an optical pickup and its driving mechanism.

  A tapered inclined portion 3b is provided on the top of the turntable 3a. The reproduction unit chassis 3 is supported in a floating state within a predetermined stroke by the sub chassis 2 through an elastic member 9 having a function as a damper.

  A boss 2 b erected on the subchassis 2 passes through the cam groove of the slider 4. The slider 4 is slidably supported by the chassis 1, and a rack 4a provided on the slider 4 can mesh with the gear 5 as shown in detail in FIG. The gear 5 is rotatably supported by the chassis 1 and is rotationally driven by a driving mechanism (not shown).

  The cover 7 fixed to the chassis 1 is provided with a hole 7a, and the clamper 6 is suspended above the turntable 3a by the cover 7 so as to be inserted through the hole 7a. The cover 7 is provided with a stopper pin 7b that comes into contact with the disk so as to extend downward.

  As shown in detail in FIG. 9, rubber disk feed rollers 8a and 8a are fitted on a shaft 8d rotatably supported by the roller lever 8, and a gear 8b is fixed. The gear 8b is rotationally driven by a drive mechanism (not shown).

  The roller lever 8 is supported by the chassis 1 so as to be rotatable about shafts 8e and 8e provided upright on the roller lever 8, and is urged in a direction in which it is pressed against the chassis 1 by a spring (not shown). The roller lever 8 is further provided with a pin 8c driven by a slider (not shown).

  In the above configuration, it is not shown that the disc has been inserted from the disc insertion opening not shown in the initial state shown in FIGS. 1 and 2 to a position immediately before being held between the disc feed rollers 8a and 8a and the chassis 1. When detected by the detector, the gear 8b is rotationally driven by the drive mechanism.

  Then, the disc pushed in until it comes into contact with the disc feed rollers 8a and 8a is drawn into the inside by the disc feed rollers 8a and 8a. At this time, the disc feed rollers 8a and 8a are pushed up against the elasticity of the spring. However, since the disc feed rollers 8a and 8a are rotating, the feeling of insertion is not impaired.

  3 and 4 show the way in which the disk 10 is being sent. At this time, the center hole 10a of the disk 10 does not reach the upper side of the turntable 3a. When the disk 10 is further fed, as shown in FIG. 5, the disk 10 comes into contact with the stopper pins 7b and 7b and is positioned in a direction perpendicular to the feeding direction, and the center hole 10a slightly advances from the center of the turntable 3a. The disk 10 is stopped at the position.

  This state is detected by a detector (not shown), the roller lever 8 is rotated against the spring force by a slider (not shown), and the disc feed rollers 8 a and 8 a are separated from the disc 10. Then, the slider 4 is pushed rightward in FIG. 10A by a trigger mechanism (not shown), and the rack 4a meshes with the gear 5 as shown in FIG. 10B.

  Thereafter, the gear 5 is rotated by the drive mechanism, and the slider 4 is fed rightward in FIG. Then, the sub-chassis 2 is rotated in the clockwise direction in FIG. 6 by the cam groove of the slider 4 through which the boss 2b of the sub-chassis 2 is inserted, and the turntable 3a is raised in the direction of drawing an arc (the direction of arrow A in FIG. 11). . FIG. 6 corresponding to FIG. 5 shows a state in which the turntable 3a is in the middle of ascending.

  The state in which the turntable 3a is raised is shown in detail in FIG. FIG. 11A shows the initial state of the turntable 3a ascending. In this state, the inclined portion 3b of the turntable 3a is not in contact with the edge of the center hole 10a of the disk 10.

  When the turntable 3a further rises in the direction A in FIG. 11 (b), the inclined portion 3b of the turntable 3a contacts the edge of the center hole 10a of the disc 10, and the disc 10 is moved in a direction opposite to the direction in which the disc is sent. Returned in the direction of arrow B, the disk 10 is separated from the stopper pin 7b.

  When the turntable 3a is further raised, the cylindrical portion below the inclined portion 3b of the turntable 3a is fitted into the center hole 10a of the disc 10, and the disc 10 is positioned concentrically with the turntable 3a. Then, the clamper 6 is lifted by the turntable 3 a and is separated from the cover 7. This state is shown in FIG.

  In this state, the clamper 6 is positioned concentrically with the turntable 3a by fitting with the inclined portion 3b of the turntable 3a, and is in a disk clamped state in which the disk 10 is pressed against the turntable 3a by a magnetic force, that is, a reproducing state. The reproduction state is also shown in FIGS. When the disc is ejected (unloaded) from the apparatus, the reverse operation is performed.

  In this embodiment, since the disk 10 is directly positioned by the turntable 3a, the eccentricity with respect to the turntable 3a can be reduced. In addition, a mechanism for driving the stopper pin 7b to separate the disk 10 from the stopper pin 7b is not required, and the apparatus can be simply configured. Furthermore, since the clamping operation is performed by the turntable 3a lifting the disc 10, the operation is smoother than the operation of dropping the disc on the turntable, and the clamping operation is performed quietly and reliably.

  The loading mechanism of the disk apparatus according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 12 is a plan view showing a state immediately after the disk is inserted in the loading mechanism of the disk device according to Embodiment 2 of the present invention, and FIG. 13A is a plan view showing a state in the middle of the disk conveyance in the loading mechanism of the disk device. FIG. 13B is a side view showing a loading mechanism of the disk device, and FIG. 14 is a perspective view showing a portion of the loading mechanism of the disk device.

  In this example, the disk feed roller 8a and its driving mechanism of the first embodiment are replaced with a driving roller 23, a driven roller 24 and its driving mechanism. Other configurations are the same as those of the first embodiment.

  The left slider 21 and the right slider 22 shown in the figure are slidably supported by the chassis 1 and are urged toward each other by a tension coil spring 26. Racks 21a and 22a provided on the left slider 21 and the right slider 22, respectively, mesh with an idler gear 25 that is rotatably supported by the chassis 1, and the left slider 21 and the right slider 22 are synchronized with each other and away from each other. Move in the direction.

  A drive roller 23 integral with the gear 23a is rotatably supported on a shaft erected on the left slider 21. A driven roller 24 is fixed and supported by a shaft erected on the right slider 22. The gear 23a is rotationally driven by a drive mechanism (not shown).

  As shown in FIG. 14, when the disk 10 is inserted in the direction of the arrow, the side of the disk is sandwiched between the drive roller 23 and the driven roller 24. When it is detected that the disk 10 has been inserted to a predetermined position, the drive roller 23 is driven to rotate until the disk 10 contacts the stopper pins 7b and 7b.

  Then, a detector (not shown) detects it and the driving roller 23 stops, and the left slider 21 and the right slider 22 are moved by a driving mechanism (not shown), so that the driving roller 23 and the driven roller 24 are moved to the disk 10. More separated. Note that the idler gear 25 may be driven to rotate in only one direction, and the left slider 21 and the right slider 22 may be driven by the gear.

  After that, the disk 10 is clamped and separated from the stopper pins 7b and 7b as in the first embodiment. Unloading is performed by the reverse operation. In the unloading operation, the driving roller 23 and the driven roller 24 are in a self-locking state due to frictional force when the driving roller 23 and the driven roller 24 hold the disk, and the driving roller 23 and the driven roller are not pushed out by the elastic force of the tension coil spring 26. 24 is arranged.

  This embodiment has the same effect as that of the first embodiment. Further, since the recording surface of the disk is not slid against the guide member, the recording surface of the disk is not damaged. Play.

  The embodiment is configured as described above, but the invention is not limited to this. For example, the playback unit chassis may be raised by parallel movement without rotating. Further, instead of attracting the clamper to the turntable by magnetic force, a recess provided in the center of the clamper may be pushed by a leaf spring supported by the reproduction unit chassis or the like. Further, the disc may be sent in the direction of the reproduction position by a lever.

  Further, the inclined portion of the turntable may be formed so that the edge of the longitudinal section becomes a curve. And if it is made to connect smoothly with a disc fitting part, clamping operation will be performed more smoothly.

FIG. 3 is a plan view showing a part of the loading mechanism of the disk device according to the first embodiment of the present invention. It is a side view which shows the state shown in FIG. 1 of the loading mechanism of the disk apparatus. It is a top view which shows the other state of the loading mechanism of the disc apparatus seeing through a part member. FIG. 4 is a side view showing the state shown in FIG. 3 of the loading mechanism of the same disk device. FIG. 10 is a plan view showing still another state of the loading mechanism of the disk device with a part of members being seen through. FIG. 6 is a side view showing the state shown in FIG. 5 of the loading mechanism of the same disk device. FIG. 10 is a plan view showing still another state of the loading mechanism of the disk device with a part of members being seen through. It is a side view which shows the state corresponding to FIG. 7 of the loading mechanism of the disk apparatus. It is a top view which shows the part of the loading mechanism of the disc apparatus. It is a top view which shows the other part of the loading mechanism of the disk apparatus. It is a partial side view which shows the effect | action of the loading mechanism of the disc apparatus. It is a top view which shows the disk insertion initial state in the loading mechanism of the disk apparatus which is Example 2 of this invention. FIG. 13A is a plan view showing a state in the middle of the disk conveyance in the loading mechanism of the disk device, and FIG. 13B is a front view showing the loading mechanism of the disk device. It is a perspective view which shows the part of the loading mechanism of the disc apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chassis 2 Subchassis, 2a axis | shaft, 2b Boss 3 Playback unit chassis, 3a Turnable, 3b Inclined part 4 Slider, 4a Rack 5 Gear 6 Clamper 7 Cover, 7a Hole, 7b Stopper pin 8 Roller lever, 8a Disc feed roller, 8b Gear, 8c pin, 8d shaft, 8e shaft, 9 elastic member, 10 disk, 10a center hole, 21 left slider, 21a rack, 22 right slider, 22a rack, 23 driving roller, 23a gear, 24 driven roller, 25 idler gear, 26 tension coil spring

Claims (5)

A disk transport means for feeding a single disk until it comes into contact with a positioning member fixed to the chassis, a disk guide portion whose diameter decreases toward the tip, and a turntable having a disk fitting portion at the bottom are fixed to the rotating shaft. A reproducing unit chassis that holds the disc motor, a drive unit that raises the reproducing unit chassis with respect to the chassis, and a clamper supported by a member fixed to the chassis. After being fed in the forward direction until it abuts against the member, the disk guide portion retracts the disc alone with respect to the disc feed direction in the process in which the playback unit chassis rises and the disc guide portion enters the center hole of the disc. The center hole of the disc is separated from the positioning member and the disc fitting portion Loading mechanism of the disk device configured to clamp the disc by with the clamper and the turntable, which is pushed up by the turntable fits. The disk drive loading mechanism according to claim 1, wherein the reproduction unit chassis is supported by the sub chassis in a floating state by an elastic member, and the driving unit drives the reproduction unit chassis via the sub chassis. The disk drive loading mechanism according to claim 2, wherein the driving unit rotates the sub-chassis about one axis with respect to the chassis. 4. The loading mechanism for a disk device according to claim 1, wherein the clamper is placed on a member fixed to the chassis so as to pass through a member fixed to the chassis. 5. The loading mechanism for a disk device according to claim 1, wherein the clamper and the turntable clamp the disk by magnetic force.

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