JP3607628B2 - Information processing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information processing apparatus applied as an optical disk recording / reproducing apparatus that performs information processing on a medium such as an optical disk.
[0002]
[Prior art]
An optical disk recording / reproducing apparatus includes a pickup chassis (hereinafter referred to as a PU chassis) in a frame, a disk motor for rotationally driving the optical disk on the PU chassis, an optical head that scans light on the optical disk, and processes information. It is equipped with.
[0003]
This optical disk recording / reproducing apparatus can handle both an optical disk stored in a cartridge and a bare optical disk not stored in the cartridge (hereinafter referred to as a cartridge-compatible type), and a naked optical disk not stored in the cartridge. That can only be handled (hereinafter referred to as cartridge-incompatible type).
[0004]
In the cartridge-compatible apparatus, one end side of the PU chassis is rotatably supported by the frame via a hinge spring, and a boss portion is projected on the other end side. The boss portion of this PU chassis is engaged with the cam groove of the cam slider. A cartridge or a tray for loading / unloading the optical disk is provided in the frame.
[0005]
When the cartridge or the optical disk is taken into a predetermined position in the frame by the tray, the PU chassis is raised and tilted by the sliding operation of the cam slider, and the disk motor is clamped by the disk motor. After being clamped by the disk motor in this way, the optical disk is driven to rotate, and information is recorded and reproduced by scanning the optical disk on the rotated optical disk with an optical head.
[0006]
In addition, in a cartridge-incompatible device, a sub chassis is disposed outside the PU chassis via a damper, and one end of the sub chassis is rotatably supported by a frame via a hinge spring, and a boss is mounted on the other end of the sub chassis. Projecting part. The boss portion of the sub chassis is engaged with the cam groove of the cam slider.
[0007]
In addition, an optical disc tray is provided in the frame, and the sub chassis is moved up and down by a sliding operation of the cam slider.
[0008]
When the optical disk is taken into a predetermined position in the frame by the tray, the sub chassis is lifted and tilted by the sliding operation of the cam slider, and the optical disk is clamped by the disk motor. After being clamped by the disk motor in this way, the optical disk is driven to rotate, and information is recorded and reproduced by scanning the optical disk on the rotated optical disk with an optical head.
[0009]
In both cases of the cartridge-compatible device and the cartridge-incompatible device described above, a vibration-proof mechanism is required to prevent vibration during rotation of the optical disk.
[0010]
In a cartridge-compatible device, there is not enough clearance between the cartridge and the optical disk, so the entire frame housing the PU chassis, disk motor, optical head, tray, etc. is held in the exterior chassis via the main damper as a unit. To prevent vibration.
[0011]
In addition, in a cartridge non-compatible device, only the PU chassis is vibrated.
[0012]
By the way, in a cartridge-incompatible apparatus, in recent years, since the reading speed has been increased, the optical disk has been rotated at a higher speed, and considering the use of the eccentric gravity center disk, it is necessary to adopt a vibration-proof configuration with a higher attenuation factor and a lower resonance frequency. There is.
[0013]
[Problems to be solved by the invention]
However, the necessity of centering when the optical disk is clamped to the disk motor causes design restrictions such as the dimensional accuracy and rigidity of the damper, and the vibration-proof performance is limited.
[0014]
Also, in cartridge-compatible devices, the entire frame that houses the PU chassis, disk motor, optical head, tray, etc. is integrated and held on the exterior chassis via the main damper. Prone to noise.
[0015]
For this reason, there is no problem when using a cartridge that rotates at a relatively low speed. However, in the case of a bare optical disk that is originally intended to be rotated at a high speed, the number of rotations must be suppressed, and the speed of reading cannot be increased. is there.
[0016]
The present invention has been made paying attention to the above circumstances, and the object of the present invention is to ensure alignment of the medium and the drive motor while maintaining high vibration isolation in a cartridge-incompatible device. In addition, an object of the present invention is to provide an information processing apparatus that can perform high-speed rotation when a bare medium is used.
[0017]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention includes a main frame placed on a base via a main damper, a sub-frame provided in a tiltable manner in the main frame, A holding frame that is supported in the sub-frame via a sub-damper, and a medium that is held by the holding frame and stored in the cartridge, or is taken in alone without being stored in the cartridge. A drive motor for rotating the medium; an information processing means for scanning the medium rotated by the drive motor to process information; and a drive means for causing the drive motor to clamp the medium by tilting the sub-frame. And locking means for locking the holding frame and restricting its movement, and when the drive motor clamps the medium The holding frame is locked by the locking means, and after clamping, when the medium is not stored in the cartridge, the lock is released and the medium is stored in the cartridge. In some cases, it is characterized by comprising operating means for continuing without releasing the lock.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
[0020]
FIG. 1 is a partially exploded perspective view showing a cartridge-compatible optical disk recording / reproducing apparatus as an information processing apparatus.
[0021]
In the figure, reference numeral 1 denotes a main frame. The main frame 1 is placed on a base 2 via a plurality of main dampers 3. A sub chassis 4 as a sub frame is provided in the main frame 1. The rear end portion of the sub chassis 4 is rotatably supported by the main frame 1 via a hinge spring 5. The front end side of the sub chassis 4 is supported by a cam slider 16 that constitutes drive means.
[0022]
Elevating grooves 16a, 16a are formed in the cam slider 16, and clamp bosses 4a, 4a engaged with the elevating grooves 16a, 16a are projected from the front end portion of the sub chassis 4. The cam slider 16 is slid as will be described later, and by this sliding operation, the front end side of the sub-chassis 4 is moved up and down to tilt the sub-chassis 4.
[0023]
On the sub chassis 4, a pickup chassis (hereinafter referred to as “PU chassis”) 6 as a holding frame is supported via a plurality of sub dampers 26. On the PU chassis 6, a disk motor 10 as a drive motor for rotationally driving an optical disk 27 as a medium, an optical pickup 9 as information processing means for irradiating the optical disk 27 with light, and this optical pickup 9 in the radial direction of the optical disk 27. A feed motor 11 that travels along is mounted.
[0024]
A lock arm 7 constituting a locking means is provided on the rear side of the sub chassis 4 so as to be rotatable via a support shaft 7a, and a connecting arm 8 constituting an operation means is supported on one side of the sub chassis 4. It is rotatably provided via a shaft 8a.
[0025]
A boss 8 b is provided on one end side of the connecting arm 8, and a lock cam 7 b that engages with the boss 8 b is formed on one end side of the lock arm 7. The lock arm 7 is rotated with the rotation of the connecting arm 8.
[0026]
One end of the connecting slider 12 constituting the operating means is connected to one end of the connecting arm 8 via a connection pin 12a, and the connecting arm 8 is rotated about the support shaft 8a by a sliding operation of the connecting slider 12. It has become.
[0027]
Bosses 12b and 12b project from the upper surface of the connecting slider 12, and a drive boss 12c projects from one end. A holding slider 13 constituting a locking means is slidably provided on the upper surface of the connecting slider 12. The holding slider 13 is formed with cam grooves 13a, 13a for engaging the bosses 12b, 12b of the connecting slider 12, and the holding slider 13 is slid in the front-rear direction.
[0028]
Further, as shown in FIG. 5, an arc-shaped lock head portion 7 c is projected and formed on the other end side of the lock arm 7, and the other end side of the lock arm 7 is attached to the sub chassis 4. The compression spring 22 is pressed in the direction of the PU chassis 6.
[0029]
A lock receiving portion 6a having a V-groove shape is provided at the center of the rear end side of the PU chassis 6, and a lock head portion 7c of the lock arm 7 is engaged with the lock receiving portion 6a. The movement in the plane direction and the vertical direction on the rear end side of the PU chassis 6 is restricted and held.
[0030]
Further, as shown in FIG. 6, arc-shaped holding head portions 6 b and 6 b are formed at both corners on the front end side of the PU chassis 6, and V groove portions 13 b and 13 b are formed at both ends of the holding slider 13. ing. The PU chassis 6 is held by the holding head portions 6b, 6b being engaged with the V-grooves 13b, 13b, so that the movement of the front end side in the planar direction and the vertical direction is restricted.
[0031]
On the other hand, on the front end side of the frame 1, a drive lever 14 constituting an operation means is rotatably attached via a support shaft 14b. A spring 17 is connected to one end side of the drive lever 14 and is urged to rotate counterclockwise. A drive pin 14a is projected from the other end of the drive lever 14, and a long hole 14c is formed in the center portion along the vertical direction. The drive boss portion 12 c of the connecting slider 12 is engaged with the long hole 14 c of the drive lever 14.
[0032]
A detection lever 15 as a switching means is provided in the vicinity of one end side of the drive lever 14. The detection lever 15 is pivotally attached to the front end side of the frame 1 with a support shaft 15a, and has a concave groove 15b for engagement. The detection lever 15 is elastically biased by a spring 18 connected to the lower end side thereof, and the concave groove 15b is engaged with and disengaged from one end side of the drive lever 14. By this engagement / disengagement, the rotation of the drive lever 14 is restricted, or this restriction is released.
[0033]
The cam slider 16 is formed with upper and lower drive grooves 16b and 16c located on the lower side of the elevating groove 16a. A rack 23 is provided on the cam slider 16, and a drive motor 25 that rotates forward and backward is connected to the rack 23 via a drive gear 24.
[0034]
Next, a case where the bare optical disk 27 is taken into the optical disk recording / reproducing apparatus configured as described above will be described.
[0035]
2 to 4 and FIG. 19 show an initial state before the bare optical disk 27 is taken. That is, the cam slider 16 is positioned at the left end, the sub chassis 4 is tilted downward, and the PU palm 6 is locked by the lock arm 7 and the holding slider 13 to restrict the movement. Further, as shown in FIG. 22, the groove 15b of the detection lever 15 is separated from the drive lever 14 and is in a non-engaged state.
[0036]
FIG. 7 to FIG. 9 further show a state in which FIG. 20 shows that the optical disk 27 is taken into a predetermined position in the apparatus and the optical disk 27 is clamped to the disk motor 10.
[0037]
That is, at this time, the cam slider 16 is slid from the left end to the center by the drive motor 25. As a result, the drive boss portions 4 a, 4 a of the sub chassis 4 move upward along the elevating grooves 16 a, 16 a of the cam slider 16, the sub chassis 4 tilts upward, and the optical disk 27 is clamped to the disk motor 10. At the time of clamping, the concave groove 15b of the detection lever 15 is separated from the drive lever 14 and is in a non-engaged state as shown in FIG.
[0038]
10 to 12 show a state in which the lock of the PU chassis 6 is released after the optical disk 27 is clamped by the disk motor 10.
[0039]
That is, at this time, the cam slider 16 is slid further from the center to the right end by the drive motor 25. As a result, the drive boss portions 4a, 4a of the sub chassis 4 move relatively horizontally along the elevating grooves 16a, 16a of the cam slider 16, and the drive pin 14a of the drive lever 14 moves along the upper drive groove 16c of the cam slider 16. Rise. At this time, since the detection lever 15 and the drive lever 14 are in the disengaged state, the drive lever 14 rotates counterclockwise around the support shaft 14b as shown in FIG. By this rotation, the connecting slider 12 is slid in the left direction in the figure via the drive boss portion 12c. By this sliding movement, the bosses 12 b and 12 b of the connecting slider 12 move along the cam grooves 13 a and 13 a of the holding slider 13. By this movement, the holding slider 13 moves forward, and the V-grooves 13b and 13b are separated from the bosses 6b and 6b at both corners of the front end of the PU chassis 6 to release the front side lock.
[0040]
Further, when the connecting slider 12 slides in the left direction in the figure, the connecting arm 8 rotates in the direction of the arrow about the support shaft 8 a, and the boss portion 8 b on one end side of the cam portion 7 b of the lock arm 7 moves. Push in. As a result, the lock arm 7 rotates in the direction of the arrow about the support shaft 7 a against the urging force of the spring 22, and the lock head portion 7 c is separated from the lock receiving portion 6 a of the PU chassis 6, so that the rear side Release the lock. As a result, the holding restrictions on the three lock portions of the PU chassis 6 are all released, and the PU chassis 6 is supported on the sub chassis 4 only by the dampers 26.
[0041]
Next, the case where the cartridge 19 is taken into the optical disc recording / reproducing apparatus will be described.
[0042]
FIGS. 13 to 15 and FIG. 21 show a state in which the cartridge 19 is taken in and the optical disk 27 is clamped to the disk motor 10.
[0043]
That is, when the cartridge 19 is inserted into the apparatus, as shown in FIG. 25, the upper side of the detection lever 15 is pressed and rotated by the cartridge 19, and the drive lever 14 is engaged with the concave groove 15a of the detection lever 15. The rotation is restricted.
[0044]
When the cartridge 19 reaches a predetermined position, the cam slider 16 is slid from the left end to the center by the drive of the drive motor 25. As a result, the drive boss portions 4a, 4a of the sub chassis 4 move relatively upward along the elevating grooves 16a, 16a of the cam slider 16, the sub chassis 4 tilts upward, and the optical disk 27 in the cartridge 19 moves to the disk motor 10. To be clamped.
[0045]
16 to 18 show a state in which the cam slider 16 is further slid and moved to the right end after the optical disk 27 in the cartridge 19 is clamped by the disk motor 10. When the cam slider 16 moves, the pin 14a of the drive lever 14 tends to face the drive groove 16c on the upper side of the cam slider 16. However, since the rotation of the drive lever 14 is restricted by the detection lever 15, It remains in the drive groove 16b. Therefore, the holding slider 13 and the lock arm 7 do not operate, and the locked state of the PU chassis 6 is held.
[0046]
As a result, the PU chassis 6, the sub chassis 4, the cam slider 16, the drive gear 24, and the entire frame 1 on which these are mounted are vibration-isolated between the exterior chassis 2 via the main damper 3.
[0047]
Note that, regardless of the presence or absence of the cartridge 19, the PU chassis 6 is held on the sub chassis 4 during tray loading, disk clamping, and releasing operations.
[0048]
As described above, when the cartridge 19 with a relatively low rotational speed of the disk 27 is used, the entire mechanism is isolated from vibration, and when the bare disk 27 requiring high rotation is used, the PU chassis 6 is unlocked. Therefore, only the PU chassis 6 can be damped. Therefore, the occurrence of chatter noise between the components can be suppressed, and the bare disk 27 can be rotated at high speed.
[0049]
FIG. 26 is a perspective view showing an optical disc recording / reproducing apparatus according to another embodiment of the present invention.
[0050]
The device shown in FIG. 26 is a cartridge-incompatible device, that is, a device dedicated to an optical disk. This device is a cartridge-detecting device shown in FIG. The damper 3 for the purpose of isolating the entire 1 is removed.
[0051]
The operation is the same as that when the bare disk 27 described in FIG. 1 is used, and the PU chassis 6 is locked to the sub chassis 4 at the time of tray loading, disk clamping, and release. Is retracted and supported on the sub chassis 4 by the dampers 26 in a relatively free state.
[0052]
Also in this embodiment, when the disk 27 is clamped to the disk motor 10, the PU chassis 6 is locked and its movement is restricted, so that the disk motor 10 and the disk 27 can be reliably aligned. .
[0053]
Therefore, in the design of the damper, restrictions such as hardness, elastic modulus, damping rate, or dimensional accuracy can be reduced, so that high vibration isolation performance can be obtained and cost can be reduced.
[0054]
In addition, since it is not necessary to consider relief for disc displacement during clamping and releasing operation of the bare disc 27, the clearance can be designed to be small, and the apparatus can be made thin.
[0055]
In any of the above-described embodiments, when the optical disk apparatus is transported, the PU chassis 6 is locked by the lock arm 7 and the holding slider 13 so that the movement is restricted, thereby preventing rattling. In addition, the occurrence of creep or the like can be prevented.
[0056]
【The invention's effect】
As described above, according to the present invention, when the medium is clamped to the drive motor, the holding frame is locked to restrict its movement, and after the clamp, the lock is released. Can be done. Therefore, in the design of the damper, restrictions such as hardness, elastic modulus, damping rate, or dimensional accuracy can be reduced, high anti-vibration performance can be obtained, the medium can be rotated at high speed, and the cost can be reduced. .
[0057]
In addition, when using a cartridge with a relatively low rotation speed of the medium, the entire mechanism is vibrated, and when using a bare medium that requires high rotation, the holding frame is unlocked. Damping is possible, and the rotation speed is not suppressed when a bare medium is used, and rotation at high speed is possible.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an optical disc recording / reproducing apparatus according to an embodiment of the present invention.
FIG. 2 is a plan view showing an optical disc recording / reproducing apparatus.
FIG. 3 is a front view showing a drive lever and a detection lever of the optical disc recording / reproducing apparatus.
FIG. 4 is a front view showing a cam slider of the optical disc recording / reproducing apparatus.
FIG. 5 is a perspective view showing an engagement portion between a PU chassis and a lock arm.
FIG. 6 is a perspective view showing an engagement portion between a PU chassis and a holding slider.
FIG. 7 is a plan view showing a state in which an optical disc is taken into an optical disc recording / reproducing apparatus and clamped by a disc motor.
FIG. 8 is a front view showing a state of a drive lever and a detection lever when an optical disc is clamped by a disc motor.
FIG. 9 is a front view showing the position of a cam slider when an optical disk is clamped by a disk motor.
FIG. 10 is a plan view showing a state in which the PU chassis is unlocked after the optical disk is clamped by the disk motor.
FIG. 11 is a front view showing a state of the drive lever and the detection lever when the lock of the PU chassis is released.
FIG. 12 is a front view showing the position of the cam slider when the lock of the PU chassis is released.
FIG. 13 is a plan view showing a state where the cartridge is taken in and the optical disc is clamped by the disc motor.
FIG. 14 is a front view showing a state of a drive lever and a detection lever when an optical disk of a cartridge is clamped by a disk motor.
FIG. 15 is a front view showing the position of a cam slider when an optical disk of a cartridge is clamped by a disk motor.
FIG. 16 is a plan view showing a state where the cam slider is further slid after the optical disk of the cartridge is clamped by the disk motor.
FIG. 17 is a front view showing a state of the drive lever and the detection lever when the cam slider is further slid.
FIG. 18 is a front view showing a position when the cam slider is further slid.
FIG. 19 is a side view showing a state in which the sub chassis is tilted downward.
FIG. 20
The side view which shows the state which the sub chassis tilted upwards and the optical disk was clamped by the disk motor.
FIG. 21 is a side view showing a state where the sub chassis is tilted upward and the optical disk of the cartridge is clamped by the disk motor.
FIG. 22 is a diagram showing a non-engagement state of the detection lever and the drive lever.
FIG. 23 is a diagram showing a non-engagement state of the detection lever and the drive lever at the time of taking in the optical disc.
FIG. 24 is a diagram showing an operation state of a drive lever when an optical disc is taken in.
FIG. 25 is a diagram illustrating an engagement state between a detection lever and a drive lever when a cartridge is taken in.
FIG. 26 is a perspective view showing an apparatus dedicated to an optical disc according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Main frame, 2 ... Exterior chassis (base), 3 ... Main damper, 4 ... Sub chassis, 5 ... Hinge spring, 6 ... PU chassis (holding frame), 7 ... Lock arm (locking means), 8 ... Connection arm (operation) Means), 9 ... Optical pickup (information processing means), 10 ... Disc motor (drive motor), 11 ... Feed motor, 12 ... Connection slider (operation means), 13 ... Holding slider (lock means), 14 ... Drive lever ( Operation means), 15 ... detection lever (switching means), 16 ... cam slider (drive means), 17 ... drive lever spring, 18 ... detection lever spring, 19 ... cartridge, 20 ... tray, 22 ... hinge spring, 24 ... drive Gear: 25: Drive motor (drive means), 26: Sub-damper, 27: Optical disk (medium), 4a: Clamp boss, 7a: Support shaft, 7b ... 8a ... support shaft, 8b ... boss, 12a ... connecting pin, 12b ... boss, 12c ... drive boss, 13a ... slide cam groove, 13b ... holding receiving portion, 14a ... drive pin, 14b ... support shaft, 14c ... Long hole, 15a ... support shaft, 15b ... concave groove, 16a ... elevating groove, 16b ... lower drive groove, 16c ... upper drive groove.

Claims (7)

A main frame placed on the base via a main damper;
A subframe that is tiltably provided in the main frame;
A holding frame supported via a sub-damper in the sub-frame;
A drive motor for rotating a medium held in the holding frame and housed in the cartridge or taken in, or a medium taken alone without being housed in the cartridge;
Information processing means for scanning and processing information on a medium rotated by the drive motor;
Drive means for clamping the medium to the drive motor by tilting the sub-frame;
Locking means for locking the holding frame and restricting its movement;
When the medium is clamped by the drive motor, the holding frame is locked by the locking means, and after the clamping, when the medium is not stored in the cartridge, the lock is released, When the medium is stored in the cartridge, operation means for continuing without releasing the lock;
An information processing apparatus comprising: The said drive means is provided with the slider which has a raising / lowering groove | channel which engages the boss part protrudingly provided in the said sub-frame, The said sub-frame is raised / lowered and tilted by sliding operation of this slider. Information processing equipment. The information processing apparatus according to claim 1, wherein the lock unit includes a lock member that is detachably engaged with the holding frame and locked. 2. The information processing apparatus according to claim 1, wherein unlocking of the holding frame or continuation of the locking after the medium is clamped is switched by a switching lever. The information processing apparatus according to claim 2, wherein the operation unit includes an operation lever operated by a slide operation of the slider. 5. The information processing apparatus according to claim 4, wherein the switching lever operates based on a cartridge being taken in. The information processing apparatus according to claim 1, wherein the holding frame is locked by a lock unit based on the absence of a medium in the apparatus.

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