JPH0628827A - Disk driving device - Google Patents

Abstract

PURPOSE:To attain stable recording and reproduction while interrupting a vertical action and a resonance action by locking a vertical movement mechanism driving a disk table at a prescribed height. CONSTITUTION:When an elevation motor is driven, an elevation block 6 is slid in a vertical direction along motor guide shafts 7, 7. When the elevation block 6 and a spindle motor 3 reach the prescribed position during the upward action, the upper horizontal plate 258a of a leaf spring 258 is fitted into a projecting part 6b, and the force for shifting the elevation block 6 to the side of chassis 2 is interrupted. When the elevation motor continues the rotation further, the upper horizontal plate 258a of the leaf spring 258 is separated off from the projecting part 6a of elevation block 6 since the leaf spring 258 is pressed in the direction A by the pin 257, then the downward movement is started. Thus, spindle motor 3 is locked to the prescribed height in the loading state, thereby the stable signal is read out and written in.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a vertical movement mechanism at the time of loading a disk, which is an essential part of a disk drive device for recording and / or reproducing information signals using a disk.

[0002]

2. Description of the Related Art A disc for recording and / or reproducing configured to record and / or reproduce an information signal by using a disc cartridge in which a recording disc such as an optical disc or a magneto-optical disc is housed. Drive devices have been proposed in the past.

This recording and / or reproducing disk drive device comprises a loading mechanism for transporting the disk cartridge to a predetermined mounting position, and a rotary drive mechanism for holding and rotating the recording disk of the disk cartridge at this mounting position. A pickup device for writing and / or reading information signals to and from the recording disk held by the rotation drive mechanism is provided on the chassis.

The loading mechanism includes a cartridge holder configured to hold a disk cartridge.
It is configured to be moved using a cam or the like. The cartridge holder holds the disc cartridge in a state parallel to the chassis, and moves the disc cartridge in a direction along the main surface of the disc, that is, in a direction parallel to the chassis. Then, when the recording disk comes to a position directly above the rotation drive mechanism, the disk cartridge is moved in a direction perpendicular to the chassis, that is, in a direction of approaching the chassis.

As described above, the recording disk of the disk cartridge moved and operated in the direction of approaching the chassis,
It is held by a rotary drive mechanism arranged on the chassis, and is rotationally operated by this rotary drive mechanism so that an information signal is written and / or read by the pickup device over the entire surface of the signal recording surface.

[0006]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention A disk drive device having a disk loading mechanism constructed with the above-mentioned cartridge holder needs to have a mechanism for moving and operating this cartridge holder. It is complicated and it is difficult to position the disk and downsize the device.

Therefore, the applicant of the present application has previously proposed a cartridge holder as an outer casing, as a disc drive device having a disc loading mechanism that simplifies the constitution of the device and enables positioning of the disc and downsizing of the device. We have proposed a structure in which a rotary drive mechanism is fixedly arranged, and a rotary drive mechanism is moved toward and away from the recording disk held in the cartridge holder.

That is, in the recording and / or reproducing disk drive device having this disk loading mechanism, the disk cartridge is inserted and operated in the direction along the main surface portion and held in the cartridge holder. In this disc loading mechanism, a disc table that serves as a rotation driving mechanism and a spindle motor that rotates the disc table are moved in a direction of approaching the disc of the disc cartridge held in the cartridge holder. . The disc table is moved to a position where it abuts the center of the disc, and holds the disc. Then, this disc table is rotated together with the disc by a spindle motor.

However, the conventional disk table that constitutes the vertical movement mechanism and the spindle motor that rotationally drives the disk table move in the direction of approaching the disk, and the disk is placed on the disk table and rotationally driven. In some cases, the spindle motor may move vertically. In addition, there is a problem that the spindle motor and the disk table that constitute the vertical movement mechanism vibrate beyond resonance at a predetermined frequency, and stable recording and / or reproducing of signals cannot be performed.

The present invention has been made to solve the above problems, and its purpose is to prevent vertical movement and resonance movement by locking the vertical movement mechanism at a predetermined height position. It is to obtain a disk drive capable of stable recording and / or reproduction.

[0011]

DISCLOSURE OF THE INVENTION The disk drive device of the present invention is designed so that the disk 102 is loaded into a position for rotationally driving the disk 102 as shown in FIG. 1 to record and / or reproduce the disk 102. In the disk drive device thus constructed, a holding means 28 for holding the disk 102 at a predetermined position, and a vertical movement having a disk rotation motor 3 for vertically moving with respect to the disk 102 arranged facing the holding means 28. Mechanisms 4 to 10, lock means 6b and 258 for locking the vertical movement mechanisms 4 to 10 at predetermined positions, and drive means 11 for driving the vertical movement mechanisms 4 to 10 are provided, and the lock means 6b is provided when the disc 102 is loaded. , 258
Thus, the vertical movement mechanisms 4 to 10 are locked at a predetermined height.

[0012]

In the disk drive device of the present invention, the vertical movement mechanism is provided with the locking means, so that the vertical movement mechanism and the vibration does not occur during loading.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. In this example, as shown in FIG. 1, a disk drive device having a disk loading mechanism according to the present invention is used to record and / or record information signals using a disk cartridge 101 in which an optical disk is housed in a cartridge.
Alternatively, it is an example applied to a disk drive device for reproducing.

As shown in FIGS. 12 and 13, the disc cartridge 101 is constructed by rotatably accommodating a magneto-optical disc 102 in a cartridge 108. The magneto-optical disk 102 has a disk substrate made of a transparent material such as synthetic resin and a signal recording layer made of a magnetic material adhered to one main surface of the disk substrate.
It has a disk shape. And this disc 102
A hub mounting hole is provided in the central portion of the. A disc hub 106 for attaching the disc 102 to the disc table 4 of the recording and / or reproducing disc drive device is attached to the hub attachment hole as described later. The disc hub 106 is formed of a metal or the like into a substantially disc shape, is substantially concentric with the disc 102, and is attached to the disc 102 by means such as adhesion or welding. At the center of the disc hub 106, a center hole 107 is formed which is centered on the center of curvature of a recording track which is substantially concentric and spirally formed on the signal recording layer.

The cartridge 108 is formed into a thin casing capable of accommodating the disk 102 by associating the pair of upper and lower halves 108a and 108b with each other. As shown in FIGS. 13 and 11, the disk 102 is provided on the upper main surface of the cartridge 108.
An upper recording / reproducing opening 104 is provided so that one of the main surface portions faces the outer side over the inner and outer circumferences. In addition, on the lower main surface portion of the cartridge 108, the disc 102
A lower recording / reproducing opening 110 is provided so that the other main surface portion of the above is exposed to the outside along the inner and outer circumferences. The lower recording / reproducing opening 110 is used as the upper recording / reproducing opening 10.
4 is formed at a position opposed to No. 4 and has substantially the same size as the upper recording / reproducing opening 104.

A chucking opening 109 for exposing the disk hub 106 to the outside is provided at the center of the lower main surface of the cartridge 108. Then, in the periphery of the chucking opening 109,
A positioning contact concave portion 105 is formed so that the cartridge positioning member 67 of the disk loading mechanism contacts.

A shutter member 103 is attached to the cartridge 108. This shutter member 1
Reference numeral 03 denotes a U-shaped member made of synthetic resin, a metal plate, or the like, which holds the upper and lower main surface portions of the front edge side portion of the cartridge 108 by means such as injection molding and bending. That is, the shutter member 103 includes an upper shutter plate portion 103a attached to the upper main surface portion of the cartridge, a lower shutter plate portion 103b facing the upper shutter plate portion in parallel with each other, and a shutter plate portion of each of these shutter plate portions. It has the connecting plate part 103c which connects base end sides, and is integrally comprised. The shutter member 103 has the connecting plate portion 103c attached to the front end surface portion of the cartridge 108, and the connecting plate portion 103c is slidably supported by the cartridge 108 along the front end surface portion. Each shutter plate 103a, 103b has
The pair of openings 112, 111 are provided at a position of the connecting plate portion closer to one side in the slidable direction with respect to the cartridge 108.
Are formed.

As shown in FIG. 12, when the shutter member 103 is in one position with respect to the cartridge 108, the other side portion of each shutter plate portion 103a, 103b is made to correspond to each recording / reproducing opening portion 104, 110. These recording / reproducing openings 104, 110 are closed, and as shown in FIG. 13, when the recording / reproducing openings 104, 110 are located at the other side of the cartridge 108, the openings 112, 111 are opened.
The recording / reproducing openings 104, 110 are opened in correspondence with the recording / reproducing openings 104, 110. In addition,
The shutter member 103 is elastically biased in one direction closing the recording / reproducing openings 104, 110 by a biasing spring (not shown) provided in the cartridge 108.

The front end face portion of the cartridge 108,
The shutter opening pin fitting portion 113 is located on one side of the connecting plate portion 103c when the recording / reproducing openings 104 and 110 are closed.

Then, each opening 1 of the shutter member 103
The reference numerals 12 and 111 are formed so as to hang on both side portions of the connecting plate portion 103c. That is, the connecting plate portion 10
The portion of 3c corresponding to each of the openings 112 and 111 is narrower than the other portions, and has a width smaller than the thickness of the disk 102. Also, the cartridge 1
08 is a portion facing the side edge of the disk 102 and corresponding to the recording / reproducing openings 104, 110, that is, the shutter member 103 when the recording / reproducing openings 104, 110 are opened. Front edge portion 116 of the cartridge 108 exposed to the outside through the openings 112 and 111 of the
Are thinner than the thickness of the disk 102.

Further, a locked recess 117 is provided on the other side edge of the cartridge 108. The locked recessed portion 117 is provided as a recessed portion opened to the main surface portion of the lower half 108b, that is, to the bottom surface side of the cartridge 108, at a substantially central position of the side edge portion on the other side of the cartridge 108.

As shown in FIG. 1, the disk drive for recording and / or reproducing has an outer casing 1 whose bottom portion is a chassis 2, and the outer casing 1 is open on the front side. . The open front side of the outer casing 1 is closed by a front panel 24. The front panel 24 has a slit-shaped disc cartridge insertion opening 25 into which the disc cartridge 101 can be inserted. The disc cartridge insertion port 25 can be opened and closed by an insertion port lid body 26. The insertion port cover 26 is formed in an elongated rectangular plate shape corresponding to the disc cartridge insertion port 25, and both end portions of the rotary shaft 27 attached along the longitudinal direction are provided at inner portions of the disc cartridge insertion port 25. Is rotatably supported at. This insertion palate 26 is
The disc cartridge insertion opening 25 is opened and closed by being rotated around the rotation shaft 27.

On the chassis 2 which is the bottom plate portion of the outer casing 1, there are arranged an optical block for signal recording / reproducing and an objective lens driving device portion, which is composed of a rotation driving means, an optical head means, a magnetic field generating means and the like. ing.

That is, on the chassis 2, there is provided a spindle motor 3 which constitutes a rotation driving means for rotating the disk 102 of the disk cartridge 101. The spindle motor 3 is attached to an elevating block 6 that constitutes loading means. The elevating block 6 is formed in a substantially annular shape, and the spindle motor 3 is fitted in the central hole 9 to support the spindle motor 3. The elevating block 6 has a plurality of shaft insertion holes 8, 8 and 8 provided with sliding bearings. The shaft insertion holes 8, 8 and
By inserting a plurality of motor guide shafts 7, 7, 7 planted in the chassis 2 into the chassis 8, the arrow M in FIG.
Further, as indicated by an arrow N, they are supported so as to be movable along the motor guide shafts 7, 7, 7 in the contact and separation directions with respect to the chassis 2. That is, the spindle motor 3 is movable in the contacting / separating direction with respect to the chassis 2. The spindle motor 3 is supported by a spindle shaft 5 integrated with a drive shaft which is substantially perpendicular to the chassis 2. The tip end side of the spindle shaft 5 faces the upper side of the chassis 2.

A disk table 4 is attached to the drive shaft of the spindle motor 3 so as to surround the peripheral portion of the spindle shaft 5 on the front end side. The disc table 4 is mounted on the disc table 10 so that the disc hub 106 attached to the disc 102 is placed.
6 is formed on a disk having a diameter substantially the same as that of No. 6. An annular magnet is integrally attached to the disc table 4 between the spindle shaft 5 and the peripheral portion of the disc table 4. The magnet serves to attract the disc hub 106 of the disc 102 placed on the disc table 4.

In addition, the upper surface of the lifting block 6 is shown in FIG.
As shown in FIG. 11, a substantially annular cartridge positioning member 67 is provided so as to be on the peripheral side of the disk table 4.
Is installed. On the chassis 2 side of the surface on which the disk hub 106 of the disk table 4 is placed,
Further, it is parallel to the surface of the disk table 4 on which the disk hub 106 is placed.

Then, on the chassis 2, a lifting block 6 is provided at a position on the front side of the spindle motor 3 together with the disk table 4 and the like in a contacting / separating direction (up and down) with respect to the chassis 2.
A moving operation mechanism for moving operation, that is, lifting operation is provided. The moving operation mechanism is configured to include an elevating motor 11 that serves as a drive motor, and a cam plate 15 that is rotationally operated by the elevating motor 11. The lift motor 11 is supported by a support member attached to the chassis 2, and the drive shaft 12 is arranged in parallel with the chassis 2. The lift motor 11 has a drive shaft 12 rotatably protruding from the casing toward the lift block 6.

As shown in the plan view of FIG. 3 and the side view of FIG. 4, the lifting motor 11 is attached to an L-shaped metal fitting 255, and the bottom surface of the L-shaped metal fitting 255 is fixed to the chassis 2.

A first gear 252 is fitted to the drive shaft 12 projecting from the L-shaped metal fitting 255 toward the lifting block 6 side, and the second gear 253 and the cam plate 15 are coaxial with each other in the L-shaped metal fitting 255. The first gear 252 is meshed with the second gear 253. Further, the third gear 256 has an L-shaped metal fitting 2
The shaft 55 is rotatably pivotally attached to the shaft 55 by the shaft 12b and meshed with the second gear 253. As shown in FIGS. 6 and 7, the cam portion of the cam plate 15 is engaged with the roller 254 fitted to the engaging pin 6a that is erected on the side portion of the elevating block 6.

A release pin 257 is erected on the third gear 256 in the direction of the elevating block 6, and a Z-shaped plate spring 258 disposed on the chassis 2 is provided on the elevating block 6 from the convex portion 6b. It is designed to be attached and detached.

As shown in FIG. 5, the elevating block 6 is provided with a convex portion 6b along its circumference, and when locked, the convex portion 6b of the elevating block 6 is placed on the upper horizontal plate 258a of the Z-shaped leaf spring 258. The lower horizontal plate 258 b is mounted and fixed on the chassis 2.

The elevating block 6 is elastically biased toward the chassis 2 by a tension spring 10 stretched between the elevating block 6 and the chassis 2.
The engagement pin 6a is brought into pressure contact with the cam plate 15 so as to abut and engage with the cam plate 15.

When the cam plate 15 is rotated by the lift motor 11, the lift block 6 is moved up and down by the cam plate 15. That is, the cam portion, which is the outer peripheral edge of the cam plate 15, is formed so as to form a part of a spiral shape, and the distance from the center changes depending on the rotation angle position. Therefore, as shown in FIG. 7 (in FIGS. 7 and 6, a configuration in which the cam plate 15 pushes up the lifting block to make it easier to understand is shown in FIGS. 7 and 6), the engaging pin is engaged. When the roller 254 fitted to 6a is located at a distance close to the center of the cam plate 15 by the cam portion, it is located close to (separated from) the chassis 2 and fitted to the engagement pin 6a as shown in FIG. When the mounted roller 254 is located at a distance farther from the center of the cam plate 15 by the cam portion, the roller 254 is located farther (closer) from the chassis 2. Reference numeral 202 denotes a shaft portion of the cam plate 15.

The lifting motor 11 may be a so-called stepping motor. In this case, it is possible to accurately control the rotational angle position.

Further, an optical pickup device, which is an optical head means composed of an optical block portion 18 and an objective lens driving device portion 17, is arranged on the chassis 2 at a position rearward of the spindle motor 3. This optical pickup device is also for irradiating the disc 102 mounted and mounted on the disc table 4 with a light beam for writing and reading an information signal.

As shown in FIG. 8, the optical block unit 18 accommodates and arranges a laser diode 50 as a light source and a plurality of optical devices for guiding a light beam emitted from the laser diode 50 in a block as a lens barrel. Is configured. That is, in the optical block unit 18, the divergent light beam emitted from the laser diode 50 is incident on the collimator lens 51, and is made into a parallel light beam by the collimator lens 51. The parallel light beam that has passed through the collimator lens 51 is incident on the galvanometer mirror 53 via the beam splitter prism 52. The galvano mirror 53 is controlled by the control means described later, and deflects the incident parallel light beam based on a predetermined control signal and reflects the deflected parallel light beam. The parallel light beam reflected by the galvanometer mirror 53 is emitted from the optical block unit 18 and is incident on the objective lens driving device unit 17.

The objective lens driving device section 17 has a frame, and a pair of guide shafts 63 and 64 are provided in the frame. The guide shafts 63 and 64 are supported by the frame while being parallel to each other and parallel to the chassis 2. A lens bobbin block 60 is arranged on the guide shafts 63 and 64. The lens bobbin block 60 is movable along the guide shafts 63 and 64 in the direction along the chassis 2. That is, the three guide rollers 61, 61, 61, 62, 6 are provided on both sides of the lens bobbin block 60, which are the sides facing the respective guide shafts 63, 64.
2, 62 are provided. Lens bobbin block 60
At least one of the guide rollers 61, 61, 61 on one side of the one side is 45 ° obliquely above the lens bobbin block 60.
Is supported by a support shaft projecting in the direction, and the other is supported by a support shaft projecting obliquely downward 45 ° from the lens bobbin block 60. Then, these guide rollers 61, 6
1 and 61 can roll on the guide shaft 63 so as to sandwich the guide shaft 63.
The guide rollers 62, 62, 62 on the other side of the lens bobbin block 60 are the guide rollers 63, 6 on the one side.
As in the case of 3, 63, at least one is supported by a support shaft projecting diagonally upward 45 ° from the lens bobbin block 60, and the other is diagonally below the lens bobbin block 60.
It is supported by a support shaft protruding in the 5 ° direction. And
These guide rollers 62, 62, 62 can roll on the guide shaft 64 so as to sandwich the guide shaft 64.

The movable direction of the lens bobbin block 60, that is, the guide shafts 63, 64
The axial direction of is a direction in which the spindle motor 3 comes in contact with and separates from the spindle motor 3, as indicated by an arrow L in FIG. Further, the lens bobbin block 60 is moved and operated along the guide shafts 63 and 64 by the feed motor 65 arranged in the frame of the objective lens driving device section 17. The feed motor 65 is of a so-called linear motor type.

On the upper surface of the lens bobbin block 60,
An objective lens 55 is provided. This objective lens 55
Is fixedly attached to the lens bobbin block 60. In addition, in the lens bobbin block 60, a reflection mirror 54 that reflects the parallel light beam incident from the optical block unit 18 and makes it enter the objective lens 55.
Is provided. That is, the collimated light beam that has entered the objective lens driving device section 17 from the optical block section 18 enters the objective lens 55 through the reflection mirror 54 to be a focused light beam, and the spindle shaft 5 The light is emitted to the upper side, which is the direction away from the chassis 2, in parallel with the.

The light beam emitted from the objective lens 55 and reflected by the disc 102 on the disc table 4 enters the objective lens 55 again to be a parallel light beam, and reaches the reflecting mirror 54. This reflection mirror 54 is
The light beam that is re-incident on the objective lens 55 and reaches the reflection mirror 54 is reflected and returned to the optical block portion 18 side. The optical block section 18 has a built-in photodetector and the like for detecting the light beam returned to the optical block section 18.
That is, the light beam returned from the objective lens driving device 17 to the optical block unit 18 returns to the beam splitter prism 52 via the galvano mirror 53. Here, the beam splitter prism 52 is the galvano mirror 5
The light beam returned from 3 is incident on the Wollaston prism 56 without returning to the collimator lens 51 side. The Wollaston prism 56 is formed by joining two right-angle prisms formed of a material having optical anisotropy such as calcite and quartz, in such directions that their optical axes are orthogonal to each other. This Wollaston Prism 5
The light beam incident on the beam splitter 6 is split into two linearly polarized lights having vibration planes orthogonal to each other. Then, the light beam that has passed through the Wollaston prism 56 passes through the condenser lens 57 and the multi-lens 58, and is received by the photodiode 59 that is a photodetector. The condenser lens 57 is a convex lens. The multi-lens 58 is a lens in which one surface is a concave surface and the other surface is a cylindrical surface (cylindrical surface).

Based on the light detection output from the photo diode 59, the amount of deviation in the optical axis direction of the objective lens 55 between the focal point of the light beam focused by the objective lens 55 and the signal recording surface of the disk 102. Is written on the recording track, and a tracking error signal indicating the amount of deviation between the focal point and the recording track formed on the signal recording surface in the direction orthogonal to the optical axis of the objective lens 55. It is possible to obtain a read signal or the like obtained by reading the upper signal.

Then, in the lens bobbin block 60,
As shown in FIGS. 1 and 9, the magnetic head support arm 19
A magnetic head device 66 serving as a magnetic field generating means is attached via the. The magnetic head device 66 is for applying an external magnetic field for writing an information signal to the disk 102. The magnetic head support arm 19 is supported at the base end side by the lens bobbin block 60, is bent in the middle, and the front end side faces the objective lens 55. The magnetic head device 66 is attached to the tip end side of the magnetic head support arm 19 and faces the objective lens 55. The magnetic head device 66 and the objective lens 55 form the disk 1
No. 02 and the working distance of the objective lens 55 are added to each other at an interval equal to the length.
The working distance of the objective lens 55 is the distance from the tip of the objective lens 55 to the focal point of the objective lens 55.

A cartridge holder 28 is arranged in the outer casing 1 so as to be located above the chassis 2. The cartridge holder 28 has a pair of holder portions 2 on both sides by means of bending a metal plate or the like.
It is formed in a substantially flat plate shape having 9 and 30. The pair of holder portions 29, 30 are bent so that both side portions of the cartridge holder 28 are bent toward the chassis 2 side, and the side edge portions of these both side portions are bent so as to be parallel to the chassis 2. The cross section has a hook shape. Both sides of the cartridge holder 28 are supported by the inner wall of the outer casing 1, and are arranged in parallel to the chassis 2.

The cartridge holder 28 includes the holder portions 2
A disc cartridge 101 is formed between 9 and 30 so that the disc cartridge 101 can be inserted and operated from the front side. And
The disc cartridge 101 inserted between the holders 29 and 30 is supported and held on both sides by the holders 29 and 30. The cartridge holder 28 is arranged such that its front portion is located on the rear side of the disc cartridge insertion slot 25. That is, the disc cartridge 101 inserted from the disc cartridge insertion port 25 is inserted between the holder portions 29 and 30 of the cartridge holder 28.

Then, on the upper surface of the cartridge holder 28, at the positions corresponding to the four corners of the cartridge 108 of the disk cartridge 101 inserted between the holders 29 and 30, the cartridge pressing spring portions 31, 32,
33 and 34 are provided. These cartridge pressing spring portions 31, 32, 33, 34 have U-shaped notches formed in the upper surface of the cartridge holder 28, and the inner portions of the notches bulge toward the chassis 2 side. It is formed by being bent. These cartridge pressing spring portions 31, 32, 33, 34 are provided in the holder portions 2 respectively.
Disk cartridge 10 inserted between 9 and 30
1 is pressed to the chassis 2 side.

Further, as shown in FIG. 1, a shutter opening rotation lever 37 for opening the shutter member 103 of the disk cartridge 101 is attached to the upper surface of the cartridge holder 28. The shutter opening rotary lever 37 is rotatably supported on the base end side by a substantially central portion on the front side of the cartridge holder 28 via a support shaft 38. The tip end side of the shutter opening rotation lever 37 is directed toward one side of the cartridge holder 28.

A shutter opening slider 43 is slidably attached to the shutter opening rotation lever 37. The shutter release slider 43 is formed in a substantially elongated plate shape and has a slide guide slit along the longitudinal direction. This shutter release slider 43
Is supported slidably in the arrangement direction of the guide pins 42 by inserting a pair of guide pins 42 set up on the shutter opening rotation lever 37 into the slide guide slits.

On the tip side of the shutter opening slider 43,
The shutter opening pin 41 is erected so as to hang down toward the chassis 2. The shutter opening pin 41 is inserted into the guide slit 36 provided on the upper surface of the cartridge holder 28, and the guide slit 3
It has entered between the holder parts 29 and 30 via 6.
In the guide slit 36, a portion extending from the front side portion of the cartridge holder 28 to the central portion of the cartridge holder 28 is an arc-shaped portion centered on the support shaft 38,
A portion extending from the central portion of the cartridge holder 28 to the rear side portion of the cartridge holder 28 is formed as a linear portion extending in the front-rear direction.

The shutter opening pin 41 moves within the arcuate portion of the guide slit 36 when the shutter opening rotation lever 37 rotates. Further, the shutter opening pin 41 is formed by sliding the shutter opening slider 43 with respect to the shutter opening rotating lever 37 when the shutter opening rotating lever 37 is rotated to form the central portion of the cartridge holder 28. , Move in the linear portion of the guide slit 36.

Then, the shutter opening rotation lever 37
Is urged to rotate by a torsion coil spring 39 whose coil portion is supported by the support shaft 38 in a direction in which the shutter opening pin 41 is on the front side. This torsion coil spring 39
One arm portion is locked to the locking portion of the shutter opening rotation lever 37, and the other arm portion is locked to the cartridge holder 2.
It is locked to the locking claw 40 provided on the No. 8. Further, the shutter release slider 43 has a tension coil spring 43a.
Thus, the shutter opening pin 41 is elastically biased in a direction to approach the support shaft 38. This tension coil spring 4
One end of the shutter 3a is locked to a locking portion on the base end side of the shutter opening slider 43, and the other end is locked to a locking claw provided on the shutter opening rotation lever 37.

In the initial state where the disc cartridge 101 is not inserted into the cartridge holder 28, the shutter opening pin 41 is positioned at the initial position where it abuts against the front end of the guide slit 36.

The control means of the recording and / or reproducing disk drive device is configured to have a control device (not shown). This control device operates the spindle motor 3, the optical pickup device, the magnetic head device 66, and the like manually from the outside of the recording and / or reproducing disk drive device based on various input signals. Operation signal input through the input device, a signal output from the optical pickup device, and the spindle motor 3
Further, a detection signal for detecting the rotation speed and the rotation angle position of the lift motor 11, a signal for detecting the completion of the insertion operation of the disc cartridge 101 into the cartridge holder 28, and the like are sent. In this recording and / or reproducing disk drive device, the tracking servo operation by driving the galvano mirror 53 in the optical pickup device, the focus servo operation by driving and controlling the up-and-down motor 11, and the rotation speed of the spindle motor 3 are predetermined. The spindle servo operation and the like for maintaining the speed are performed under the control of the control device.

In order to mount and operate the disk cartridge 101 in the disk drive apparatus according to this embodiment having the above-described structure, first, the disk cartridge 101 is
An insertion operation is performed through the disc cartridge insertion port 25, and the disc cartridge is held between the holder portions 29 and 30. At this time, the disc cartridge 101 is inserted with the shutter member 103 on the front side, as indicated by the arrow J in FIGS. 1 and 9. Then, the lower end side portion of the shutter opening pin 41 is the front end surface portion of the cartridge 108 and is the shutter member 10.
3 near the one end of the connecting plate portion 103c, that is, the shutter opening pin fitting portion 113. Then, when the disk cartridge 101 is further inserted into the inner side between the holder portions 29 and 30, the shutter opening pin 41 is pressed by the cartridge 108, and the shutter opening rotation lever 37 is twisted to attach the coil spring 39. While rotating against the force, it moves rearward along the arc portion of the guide slit 36.

When the shutter opening pin 41 is moved to approximately the center of the cartridge holder 28,
The connecting plate portion 10 of the shutter member 103 is formed by the lower end portion.
3c is pressed to open the recording / reproducing openings 104, 110 by the shutter member 103. When the shutter member 103 opens the recording / reproducing openings 104, 110, the shutter member 103 is closed. Openings 112, 11
The front end side portion of 1 is located substantially at the center of the front side portion of the cartridge 108. Then, cartridge 1
As shown in FIGS. 13 and 9, the front edge portion 116 of 08 is exposed to the outside through the openings 112 and 111 of the shutter member 103.

When the disk cartridge 101 is inserted further toward the rear side, the holder parts 29, 3 of the disk cartridge 101 are moved by the cartridge pressing spring parts 31, 32, 33, 34.
It is moved to the rear side while being pressed and supported by the chassis 2 side between 0. Then, the disk cartridge 101
First, the narrow portion of the connecting plate portion 103c is moved to the objective lens 55.
And the magnetic head device 66, then the leading edge portion 116 of the cartridge 108 is passed between the objective lens 55 and the magnetic head device 66, and as shown in FIG. It is inserted between the lens 55 and the magnetic head device 66. At this time, the gap between the objective lens 55 and the magnetic head device 66 is set to the disk 1
Since the disc 102 has a thickness larger than that of 02, the disc 102 is inserted between the objective lens 55 and the magnetic head device 66 without contacting the objective lens 55 or the magnetic head device 66.

At this time, the shutter opening pin 41 is pressed against the cartridge 108, so that the shutter opening slider 43 slides with respect to the shutter opening rotating lever 37 against the biasing force of the tension coil spring 43a. To be done. The shutter opening pin 41 is located inside the linear portion of the guide slit 36 on the rear side, that is, the support shaft 38.
It is moved in the direction of further separation.

At this time, the elevating block 6 is urged to move toward the chassis 2 by the tension coil spring 10 and is positioned at the initial position as shown in FIG. 2A.

When the disc cartridge 101 is inserted to a predetermined insertion completion position, as shown in FIG. 10, the disc table 4 and the disc hub 106 are substantially coaxial and face each other. . At this time, it is detected by a detection device (not shown) that the disc cartridge 101 has been mounted to the insertion completion position,
A detection signal indicating this detection is sent to the control device.

The detecting device has, for example, a so-called photocoupler, and is configured to detect the completion of the insertion operation of the disc cartridge 101 optically or by various other means. ing.

The control device to which the detection signal is sent from the detection device drives the lifting motor 11. This lifting motor 11
The cam plate 15 is rotationally operated by the drive of, and the lifting block 6 is moved to an upper side separated from the chassis 2 as indicated by an arrow N in FIG. That is, when the disc cartridge 101 is inserted into the cartridge holder 28 to a predetermined position, the spindle motor 3 rotates from a non-rotational driving position separated from the disc 102 to a rotation driving position closer to the disc 102 than the non-rotational driving position. It is moved to the position by the lifting motor 11. When the lifting block 6 is moved up and down to the rotational drive position, the disk hub 106 of the disk 102 is placed on the disk table 4 and the cartridge 108 is moved to the cartridge positioning member 6 as shown in FIG.
It is placed on 7. At this time, the tip end side of the spindle shaft 5 is fitted in the center hole 107. Further, at this time, in the cartridge 108, the positioning contact concave portion which is the peripheral portion of the chucking opening 109 is brought into contact with the cartridge positioning member 67.

The cartridge 108 thus placed on the cartridge positioning member 67 resists the biasing force of the cartridge pressing spring portions 31, 32, 33, 34, and the space between the holder portions 29, 30. Are moved away from the chassis 2. In addition, the disk 102 is
In this way, the disc hub 106 is placed on the disc table 4.
Is mounted on the cartridge 108, the cartridge 108 is separated from the inner wall portion of the cartridge 108. In the disk 102, since the distance between the upper surface of the disk table 4 and the cartridge positioning member 67 is always constant, in the cartridge 108,
The cartridge 108 is held at a fixed position. Further, the disc hub 106 is the disc table 4
It is held in pressure contact with the disk table 4 by the attraction force of the magnet provided above.

In this state, when the spindle motor 3 is driven, the disc 102 moves to the disc table 4
At the same time, it is rotated. The disk 102 is rotated by the spindle motor 3 at a predetermined angular velocity. Further, the optical pickup device including the optical block portion 18 and the lens bobbin block portion 17 and the magnetic head device 66 apply a magnetic field and irradiate a light beam to the disk 102 rotated by the spindle motor 3. By doing so, the information signal is written, and by irradiating the light beam, the already written information signal is read.

In this recording and / or reproducing disk drive device, when the elevating block 6 is moved down to the chassis 2 side as shown by the arrow M in FIG. 11, the disk cartridge 101 is moved to the position shown in FIG. As indicated by an arrow O, the ejection operation is performed to the front side of the cartridge holder 28 by the urging force of the tension coil spring 43a. Further, when the disc cartridge 101 is ejected to the front side of the central portion of the cartridge holder 28, the shutter opening rotation lever 37 is returned to the initial position by the torsion coil spring 39, and the shutter member 103 is opened at each opening. 10
4, 110 is closed.

The lock mechanism of the spindle motor 3 including the elevating block 6 of the present example in the disk drive for recording and / or reproduction having the above-mentioned structure will be described in detail with reference to FIGS.

As shown in FIG. 5, the elevation block 6 is provided with a convex portion 6b along the outer periphery of the elevation block 6, for example.
When the elevating block 6 comes to the uppermost position with the cam plate 15 via the elevating motor 11 as shown in FIG. 6 and the disc 102 is placed on the disc table 4 of the spindle motor 3, the upper horizontal plate of the leaf spring 258 is moved. It is mounted on 258a so as to prevent downward movement against the biasing force of the tension spring 10.

The relationship between the cam plate 15 and the roller 254 pivotally attached to the tip of the pin 6a that is erected on the elevating block 6 has been described above by providing it above the cam plate 15 in the principle diagrams of FIGS. Actually, as shown in FIG. 4, since it is arranged below the cam plate 15, the elevating block 6 arranged in the upper moving position.
The one that supports the tension spring 10 and the guide shaft 7,
Although only 7, the leaf spring 258 can completely lock the upper position.

That is, in this example, the operation is performed as shown in FIGS. 2A to 2C. In the initial state shown in FIG. 2A, the lifting block 6
The convex portion 6a of the plate presses the back surface of the vertical plate 258c of the plate spring 258.

Next, when the lifting motor 11 is driven, the first gear 252 rotates in accordance with the clockwise rotation of the drive shaft 12, and the second gear 253 meshing with the first gear 252 rotates counterclockwise. And the cam plate 15 rotates. The lifting block 6 to which the roller 254 in contact with the cam plate 15 is attached is the motor guide shaft 7,
Slide up and down along 7.

The third gear 256 meshed with the second gear 253 also rotates in the counterclockwise direction, for example, and the pin 257 also rotates in the counterclockwise direction.

As the lifting motor 11 is rotated, the convex portion 6a of the lifting block 6 moves upward while coming into contact with the back surface of the vertical plate 258c of the leaf spring 258, as shown in FIG. 2A. When the spindle motor 3 reaches the ascending / descending block 6 at the same time, the upper horizontal plate 2 of the leaf spring 258 reaches the convex portion 6b.
58b fits in and blocks the force that moves the lifting block 6 toward the chassis 2 side.

When the rotation of the lifting motor 11 is further continued, the pin 257 erected in the third gear 256 rotates as shown in FIG. 2C as shown in FIGS. 3 and 4, and comes to rotate as shown in FIG. 2C.
Of the leaf spring 258 is pressed against the leaf spring 258 in the direction of the arrow A.
8a separates from the convex portion 6a of the lifting block 6, and at this time,
The leaf spring 258 moves in the A direction and descends by an amount corresponding to the stroke of the cam portion of the cam plate 15.

According to the above configuration, the spindle motor 3
In the loading state in which the disk table 4 is fitted to the disk 102, the spindle motor 3 is locked at a specified height, and stable reading and writing of signals becomes possible.

In the above-described structure, the example in which the lock mechanism is provided by the convex portion 6a provided on the elevating block 6 and the plate spring 258 has been described. However, as shown in FIG. 14, the elevating block 6 is provided with a wedge-shaped concave portion 260. , The wedge 26 at the tip of the chassis 2
1 is fixed, the wedge 261 is engaged with the recess 260 at the upper moving position of the elevating block to bring it into the locked state, and the pin 257 is moved in the direction of arrow B to release this engagement. You can also

Further, in the above-mentioned configuration, an example in which a stepping motor or the like is used as the lifting motor 11 to perform lifting is described, but an example of a linear motor type lifting motor will be described with reference to FIGS.

FIG. 15 is a plan view of the linear type lifting motor of this example, and FIG. 16 is a view taken along the line BB ′ of FIG. 15, and the portions corresponding to those of FIGS. 1 and 2 are the same. The reference numerals are shown.

The elevating block 6 has a flat cylindrical shape,
The coil 300 is wound around the outer circumference. The center of the lifting block 6 is hollow and the spindle motor 3 is fitted therein. The disk table 4 is fitted on the spindle shaft 5 of the spindle motor 3, and an annular magnet 301 attracted to the disk hub 106 of the disk 102 is embedded on the disk table 4.

Shaft insertion holes 8, 8 are formed in the thickness direction with the center position of the lifting block 6 interposed therebetween, and the shaft insertion holes 8, 8 have a bearing structure as shown in FIG. 17 in which a stroke ball bearing is arranged. Is made.

That is, the motor guide shafts 7, 7 of this bearing are inserted into the center hole of the cage 303, and the cage 303 and the plurality of miniature steel balls 304 constitute a ball cage 305. By covering the outer cylinder on the outside, the reciprocating linear motion in the axial direction at the same time as the motion in the rotational direction makes it possible to construct the frictional resistance extremely small.

Accordingly, the spindle motor 3 fitted to the elevating block 6 is movable along the motor guide shafts 7, 7 in the direction in which the spindle motor 3 separates from and contacts the chassis 2.

Further, a stator is formed on the chassis 2 for linearly driving the lifting block. That is,
For example, two magnet holding yokes 306 are arranged on the chassis 2 so as to face the coil 300 wound around the elevating block 6. Magnets 307L and 307R are provided on the yoke 306.
Are attached to form a linear drive means.

Reference numeral 308 is a stopper having a substantially inverted L shape for defining the upward movement position of the elevating block 6.
One end is formed so as to be in contact with the upper surface of the lifting block 6, and the other end is fixed to the chassis 2.

According to the linear driving means having the above-mentioned structure, when the disk cartridge 101 is loaded into the cartridge holder 28 and brought to the specified position, the detection means detects the detection and the coil 300 is supplied with an electric current. , The direct driving force in the upward direction is applied to the magnets 307L and 30
It occurs between 7R, and the upper surface of the lifting block 6 contacts the stopper 308 and stops. The coil 3 is provided between the stopper 308 and the upper surface of the lifting block 6 and at the time of unloading.
It is possible to appropriately provide a shock absorbing means in order to absorb the shock when the lifting block 6 descends and comes into contact with the chassis 2 when the current supplied to 00 is cut off.

An example of such a shock absorbing means will be described with reference to FIGS. 18, 19A and B. FIG. 18 is a plan view similar to FIG. 15, FIGS. 19A and 19B are schematic side views similar to FIG. 16 taken along the line CC ′, and the linear driving means is exactly the same as FIG. 15 and FIG. In this example, the same lift plate 11 and first and second gears 252 and 253 as those described with reference to FIGS.
And 310 and 31 between the second gears 252 and 253.
1 is provided with an intermediate gear configured coaxially.

The disk cartridge 101 having the above-mentioned configuration
When the carriage comes to a predetermined position of the cartridge holder 28, the lifting motor 11 rotates, and the first gear 252 → the intermediate gear 31
0 → second gear 253 → cam plate 1 in the path of cam plate 15
Rotate 5.

When the tip of the lifting block 6 comes into contact with the stopper 308, loading is completed. Further, when a current is passed through the coil 300 at this point, the lifting block 6 is further moved up as shown in FIG. 19A by the linear motor operation.
The cam plate 15 and the roller 254 fitted to the pin 6a of the elevating block 6 are separated from each other, and the elevating block 6 is fixed and locked.

Next, when lowering the lifting block 6 (unloading state), the lifting motor 11 is driven to lower it through the gears 252, 310, 311 and 253 and the cam plate 15, and at this time, the linear motor system is operated. If the coil 300 is set so that no current flows, the tension spring 1
Damping is performed by an impact operation with 0, and an elevating means that does not damage the elevating block can be obtained.

Further, the cam portion of the cam plate 15 is a portion for holding the disc 102 on the disc table 4 as described above, and a portion for adjusting the height position of the disc cartridge 101 after the holding operation is completed. And the cam shape of the portion that performs the holding operation of the cam plate 15 is such that the elevating block 6 is moved abruptly to a predetermined height, and the height position of the disc cartridge 101 is adjusted. The cam shape may be such that the lifting block 6 can be moved within a minute distance.

If the elevating motor 11 can perform an accurate elevating operation with respect to the elevating block 6 with a minute movement amount of, for example, 1 μm while the disc table 4 holds the disc 102, With the disc table 4 holding the disc 102, the raising / lowering motor 11 or the linear motor raises / lowers the raising / lowering block 6 by a small amount to move the disc 1
It can be adjusted so that 02 is always at a predetermined position with respect to the objective lens 55.

That is, in such a recording and / or reproducing disk drive device, the elevating motor 11 and the linear motor are drive-controlled based on a so-called focus error signal obtained from the optical pickup device.
A so-called focus servo operation can be performed in which the signal recording surface of the disk 102 is always on the focus of the light beam formed by the objective lens 55. Therefore, in the optical pickup device that constitutes the recording and / or reproducing disk device, a so-called objective lens driving device for moving and operating the objective lens 55 in the optical axis direction, that is, a device that does not need an actuator can be obtained. .

[0090]

Since the configuration of this embodiment is configured as described above, the spindle motor 3 can be mechanically or electrically locked at a predetermined position so that the spindle motor 3 moves up and down or resonates at a predetermined frequency. A disk drive device that can eliminate the adverse effects such as the occurrence of the above problem can be obtained.

[Brief description of drawings]

FIG. 1 is an assembled perspective view showing a partially broken configuration of a disk drive device according to the present invention and a disk cartridge mounted in the disk drive device.

FIG. 2 is an explanatory view of the principle of lifting operation of the disk drive device of the present invention.

FIG. 3 is a plan view of an essential part of a lifting means of the disk drive device of the present invention.

FIG. 4 is a schematic side view of an essential part of the lifting means of the disk drive device of the present invention.

FIG. 5 is a perspective view of a main part of the disk drive device of the present invention.

FIG. 6 is an operation explanatory diagram (I) of the cam plate used in the disk drive device of the present invention.

FIG. 7 is an operation explanatory view (II) of the cam plate used in the disk drive device of the present invention.

FIG. 8 is an enlarged plan view showing the structure of an optical pickup device of the disk drive device with a part thereof cut away.

FIG. 9 is an enlarged side view showing a state in which a disc cartridge insertion operation has been started with respect to the disc drive device, with a part thereof broken away.

FIG. 10 is an enlarged side view showing a state in which a disc cartridge insertion operation has been completed with respect to the disc drive device, with a part thereof broken away.

FIG. 11 is an enlarged side view showing a state in which the holding operation for the disc cartridge inserted in the disc drive device is completed, with a part thereof broken away.

FIG. 12 is a perspective view showing the configuration of a disc cartridge mounted in the disc drive device as viewed from the bottom side.

FIG. 13 is a perspective view from the bottom side showing a state where the shutter member of the disc cartridge mounted in the disc drive device is released.

FIG. 14 is a side sectional view showing another embodiment of the lifting means of the disk drive device of the present invention.

FIG. 15 is a plan view of a linear motor used in the disk drive device of the present invention.

FIG. 16 is a side sectional view of a linear motor used in the disk drive device of the present invention.

FIG. 17 is a perspective view of a bearing bearing used in the disk drive device of the present invention.

FIG. 18 is a plan view showing another configuration of the linear motor used in the disk drive device of the present invention.

FIG. 19 is a schematic side view showing another configuration of the linear motor used in the disk drive device of the present invention.

[Explanation of symbols]

 3 Spindle Motor 4 Disc Table 6 Elevating Block 6b Convex Part 11 Elevating Motor 15 Cam Plate 101 Disc Cartridge 102 Disc 258 Leaf Spring

Claims (4)

[Claims] 1. A holding device for holding a disc at a predetermined position in a disc driving device configured to load the disc to a position where it is rotationally driven and to record and / or reproduce the disc. A vertical movement mechanism having a disk rotation motor that moves up and down with respect to the disk arranged facing the means, locking means for locking the vertical movement mechanism at a predetermined position, and drive means for driving the vertical movement mechanism. A disk drive device comprising the vertical movement mechanism locked to a predetermined height by the locking means when the disk is loaded. 2. The disk drive device according to claim 1, further comprising a spring member that engages with an engaging portion provided on the vertical movement mechanism and locks the vertical movement mechanism at a predetermined position. . 3. The disk drive device according to claim 1, wherein the drive means for driving the vertical movement mechanism is constituted by a linear actuator. 4. The disk drive device according to claim 1, wherein the lock means for locking the vertical movement mechanism at a predetermined position is configured to electromagnetically lock the linear actuator.