JP2003016750A - Disk drive - Google Patents

Abstract

(57) [Problem] To provide a small-sized and thinned disk drive device capable of reliably performing a vertical movement of a magnetic head with a simple configuration. A magnetic head, a magnetic head support member for supporting the magnetic head so that the magnetic head can be brought into contact with the disk, and the magnetic head can be separated from the disk, and a magnetic head A lift plate configured to be able to lift the support member,
And a moving means for moving the lift plate in a direction parallel to the disk. The moving means moves the lift plate along the above-mentioned direction until the lift plate comes into contact with the magnetic head support member, and the lift plate magnetically lifts the magnetic head support member so that the magnetic head separates from the disk. The lift plate is further moved in the above-mentioned direction while being in contact with the head support member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device for recording and / or reproducing information on a disk-shaped recording medium. More specifically, the present invention relates to a magnetic head lifting mechanism of a drive unit for a magneto-optical disk.

[0002]

2. Description of the Related Art Conventionally, an information recording / reproducing apparatus has been proposed which records and / or reproduces information by using a recording medium such as a magneto-optical disk or an optical disk. As such a recording medium, there has been proposed a disc cartridge in which a magneto-optical disc or an optical disc is housed in a cartridge. Further, the information recording / reproducing apparatus has an optical pickup and a magnetic head for writing information in and / or reading information from the recording medium.

Such an information recording / reproducing device is widely used as an optical disc device used for an audio disc device, a video disc device, or a data storage device of a computer.

Among optical disk devices, an MD (mini disk) device using a small-diameter disk as a medium is widely used as an audio disk device which is small and suitable for carrying. In addition to audio / video (AV) devices such as MDs, personal computers are rapidly becoming smaller and more portable. Therefore,
Further miniaturization and thinning of optical disc devices mounted on these devices and computers are desired.

In order to obtain a capacity necessary for recording an image or a moving image having a large data size in a small disc, it is necessary to improve the recording density. In recent years, techniques for improving the recording density of optical disks have been rapidly advancing. In particular, for magneto-optical disks, various super-resolution reproduction methods have been developed, and high recording densities that have not been available in the past have been realized.

In a magneto-optical disk drive, a magnetic head used for recording information is held at the tip of a leaf spring-like support member and faces the disk recording area through an opening provided in the cartridge. It is configured like this. The magnetic head is connected to an optical pickup on the opposite side of the disk with a connecting member, and is movable in the radial direction of the disk integrally with the optical pickup. Further, the magnetic head is pressed toward the disk by the supporting member so as to be close to the disk surface or slide on the disk surface at the time of recording information. As a result, the magnetic head can apply a predetermined magnetic field to the disk from just the opposite side of the laser spot emitted from the optical pickup.

At the time of reproducing information, the magneto-optical disk drive device reads the information only by the optical pickup, so that the magnetic head is unnecessary. In general, an optical disk drive has a magnetic head lifting mechanism that moves the magnetic head close to the disk only during recording and retracts the magnetic head away from the disk surface during playback in order to prevent wear and damage on the disk surface and the magnetic head. Is provided.

A conventional drive unit for such a magneto-optical disk will be described below with reference to the drawings.

FIG. 9 is a perspective view showing a cartridge used in a conventional disk drive device.

In FIG. 9, a cartridge 31 accommodates a disk 32 rotatably. Further, the cartridge 31 has an opening 33 for allowing the optical pickup and the magnetic head to face the disk recording surface. When the cartridge 31 is placed on the drive device, the shutter 34 moves to expose the opening. When the cartridge 31 is taken out from the drive device, the shutter 34 returns to the original position and closes the opening.

FIG. 10 is a plan view showing the structure of a conventional disk drive device 50. Further, FIG. 11 is a cross-sectional view of a conventional disk drive device.

Further, in order to make it easier to understand, FIG. 14 is a cross sectional view schematically showing a conventional disk drive device 50. Here, first, the contact / separation operation of the magnetic head with respect to the disk in the conventional disk device will be described with reference to FIGS.

FIG. 14A shows a conventional disk drive device 5.
0, the disk cartridge 31 is not inserted, FIG. 14B shows the conventional disk drive device 50 in which the magnetic head 40 is in contact with the disk 32, and FIG. 14C shows the conventional disk drive. In the apparatus 50, the magnetic head 40 is shown separated from the disk 32. When the disc cartridge 31 is inserted into the disc drive device 50, the respective components are arranged as shown in FIG. 14B so that the disc can be recorded. That is, the magnetic head 40 attached to the tip of the suspension 41 comes into contact with the disk 32. At this time, the lift plate 46 moves the suspension 41.
Is not in contact with. Next, since the magnetic head 40 is unnecessary when reproducing the disk 32, the lift plate 46 is
Rotates to lift the suspension 41, so that the magnetic head 40 is separated from the disk 32. That is,
The state shown in FIG. 14C is obtained.

As described above, in the conventional disk drive device 50, the height for rotating the lift plate 46 is required, so that the height h ₁ is required as a whole as shown in FIG. The thickness becomes large.

Next, the conventional disk drive device will be described in more detail with reference to FIGS.

In FIGS. 10 and 11, the cartridge 31 accommodating the disk 32 is held by the holder 39 and is in a position where information can be recorded / reproduced. The holder 39 is rotatably attached to the chassis 35 by rotating shafts 60 provided at both ends of the chassis 35. A guide shaft 38 is provided on the chassis 35,
The optical pickup 37 is movable along the guide shaft 38 in the radial direction of the disc by a transfer motor (not shown). The optical pickup 37 is the cartridge 3
The disk 32 is exposed through the opening at the bottom of the disk 1. A spindle (not shown) is provided at the center of the chassis 35.
And the disk 3 stored in the cartridge 31
Rotate 2.

The magnetic head 40 is attached to the tip of the suspension 41 and is connected to the optical pickup 37 by an angle 43. Then, these are integrally movable in the radial direction of the disk 32. The magnetic head base 42 is simultaneously provided on the angle 43.
The magnetic head base 42 is held parallel to the recording surface of the disk 32 above the angle 43, and is pressed by the leaf spring 57 toward the disk 32.

In this state, the suspension 41 bends above the natural state, and the magnetic head 40 moves toward the disk 3.
The disk 32 is pressed by being in contact with 2. As a result, the magnetic head 40 slides on the disk 32 with a predetermined pressing force, and a magnetic field is applied from the opposite side of the disk to the position of the beam spot irradiated from the optical pickup 37 to record information. Be seen.

Variations in the vertical position of the magnetic head and the angle of the disk 32 with respect to the recording surface due to surface deviation of the disk 32 are absorbed by deformation of the gimbal suspension portion 53 at the tip of the suspension 41. Further, the pressing force with which the magnetic head 40 presses the disk 32 is set to an extremely small force so that the disk 32 is not largely bent.
3 has a very low rigidity and a flexible structure.

The suspension 41 needs to be constructed so that the magnetic head 40 contacts the disk 32 through the opening of the cartridge 31. For this reason, the suspension 41 has a bent shape so as to avoid obstacles existing from the mounting portion to the angle 43 to the recording surface of the disk 32.

A slide plate 44 is attached to the upper surface of the holder 39 so as to be slidable in the insertion direction of the cartridge 31 (direction of arrow b in FIG. 10), and the engaging portion 45 is provided from the side surface of the holder 39 to the lower portion of the cartridge 31. And the slide plate 44 is driven by a drive mechanism (not shown) installed in the lower portion of the cartridge 31.

Further, a lift plate 46 is pivotally supported on the upper surface of the holder 39, and when the slide plate 44 is slid toward the rotation shaft 60 side of the holder 39, the inclined protrusion 48 of the slide plate 44 is lifted. By lifting the protruding portion 47 of 46, the lift plate 46 is inclined and the tip portion 46a is lifted. The magnetic head suspension 41 located above the lift plate 46 is lifted by tilting the lift plate 46 at any position from the inner circumference to the outer circumference of the disk 32, and the magnetic head 40 is separated from the disk 32 ( Lifted up).

In a magneto-optical disk, normally, the magnetic head is brought into contact with the disk only during recording and the magnetic head is lifted up during reproduction to prevent abrasion and damage of the disk and the magnetic head.

FIG. 12 is a plan view showing a conventional disk drive device with the magnetic head lifted up. FIG. 13 is a cross-sectional view showing a conventional disk drive device with the magnetic head lifted up.

In FIGS. 12 and 13, the slide plate 44 is slid toward the rotary shaft 60 side of the holder 39 by the drive mechanism installed under the holder 39 (direction of arrow b in FIG. 12). The inclined protrusion 48 is the protrusion 47 of the lift plate 46.
The lift plate 46 is lifted around the axis and tilted by digging under the magnetic head suspension 41.
Is deformed to the upper side and lifted. At this time, the tip portion of the magnetic head suspension 41 is attached to the magnetic head base 4
Abut the lower surface of 2. Further, the gimbal suspension portion 53 of the magnetic head suspension 41 is deformed downward, and the magnetic head 40 and the magnetic head suspension 4 are deformed.
1 is stored between the upper surface of the cartridge 31 and the magnetic head base 42.

The reason why the tip of the magnetic head suspension 41 is brought into contact with the magnetic head base 42 is that the tip of the magnetic head suspension 41 projects beyond the height of the magnetic head base 42 to increase the thickness of the entire apparatus. This is to prevent the magnetic head suspension 41 from being deformed due to a drop in the lifted-up state and an impact or an external force.

[0027]

However, the conventional disk drive device has the following problems.

As shown in FIG. 13, the thickness of the device indicated by the dimension D is the sum of the thickness of the chassis 35, the thickness of the cartridge 31, and the thickness of the magnetic head lifting mechanism above the cartridge 31. Decided. In order to lift the magnetic head 40 until it abuts the magnetic head base 42 above the cartridge 31, the lift amount L of the lift plate 46 needs to be at least a step H between the upper surface of the cartridge and the disk surface. If the lift amount L is made smaller than necessary, the magnetic head 40 may not be sufficiently separated from the disk 32, and the magnetic head 40 may collide with the disk 32 due to vibration or shock during reproduction. Further, if the magnetic head 40 cannot be brought into contact with the magnetic head base 42, the gimbal suspension portion 53 may be deformed by a drop impact or the like. Therefore, it is necessary to make the lift amount L sufficiently large, and it is not possible to reduce the thickness of the entire device.

As described above, when the drive mechanism for raising and lowering the magnetic head 40 is provided above the cartridge 31, the thickness of the apparatus is significantly increased. Even if the drive mechanism is provided below the cartridge 31, the thickness of the device is limited by the thickness of the drive mechanism, and it is difficult to reduce the thickness of the entire device even if the spindle and the optical pickup are made thinner. Furthermore, in this case, it is necessary to transmit power from the drive mechanism below the cartridge 31 to the lift plate 46 located above the cartridge 31, which complicates the structure.

The present invention has been made in view of the above problems, and provides a compact and thin disk drive device capable of surely performing the raising / lowering operation of the magnetic head with a simple structure. The purpose is to

[0031]

DISCLOSURE OF THE INVENTION The present invention is a disk drive device for driving a disk housed in a cartridge, wherein a magnetic head and the magnetic head can be brought into contact with the disk, and A magnetic head support member for supporting the magnetic head so that the magnetic head can be separated from the disk, a lift plate configured to be able to lift the magnetic head support member, and the lift Moving means for moving the plate in a direction parallel to the disk, the moving means,
The lift plate is moved along the direction until the lift plate contacts the magnetic head supporting member, and the lift plate lifts the magnetic head supporting member so that the magnetic head is separated from the disk. A disk device that further moves the lift plate along the direction in a state where the lift plate is in contact with the magnetic head support member, and the above object is achieved thereby.

[0032] One embodiment of the present invention further comprises a slide plate on which the lift plate is installed, and the moving means moves the lift plate by sliding the slide plate. Disk drive device.

One embodiment of the present invention is a holder for holding the cartridge and a link member having two ends, one end of which is rotatably attached to the chassis of the disk drive device, and A link member having an abutting portion that abuts the lift plate is provided at the other end, the holder is rotatably attached to the chassis, and the lift plate is pivotable on the slide plate. The holder is rotatably mounted, and when the holder is pivotally raised from the chassis so as to eject the cartridge, the abutting portion of the link member abuts on the lift plate so that the lift plate moves from the slide plate. The rotating plate is lifted up, and the lift plate further lifts the magnetic head support member so that the magnetic head is further separated from the disk. Is a disk drive.

In one embodiment of the present invention, an inclined protrusion is provided on a path along which the slide plate slides, and the moving means slides the slide plate so that the slide plate has the inclined protrusion. The disk drive device according to the above, wherein the lift plate on the slide plate further lifts the magnetic head support member by riding on.

One embodiment of the present invention further comprises a holder for holding the cartridge, and the cartridge has a curved region having an outer shape of an arc substantially concentric with the disk housed in the cartridge. The disk drive device as described above, wherein the moving means is located in a space defined by an inner wall of the holder and a curved region of the cartridge when the cartridge is mounted on the holder.

In one embodiment of the present invention, the holder is attached to a chassis of the disk device so as to be capable of being rotated and raised by two rotation shafts, and at least one of the rotation shafts is the above-mentioned. The disk drive device is provided inside both ends of the holder, and the disk drive device further includes deformation preventing means between the cartridge and the holder, and the deformation preventing means is provided when the cartridge is mounted on the holder. The disk drive device according to the above, which reduces the impact of the cartridge on the holder.

[0037]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 15 shows a disk drive device 100 of the present invention.
The cross-sectional view which showed typically was shown.

Here, first, (a) and (b) of FIG.
The contact / separation operation of the magnetic head with respect to the disk in the disk apparatus of the present invention will be described with reference to FIG.

The disk drive device 100 of the present invention enables the magnetic head 10 and the magnetic head 10 to be in contact with the disk 2 and the magnetic head 10 to be separated from the disk 2. Magnetic head 10
1 which is a magnetic head supporting member for supporting
1, a lift plate 16 configured to be able to lift the suspension 11, and a drive mechanism 17 that is a moving unit that moves the lift plate 16 in a direction parallel to the disc 2.

FIG. 15A shows a recordable state of the disk 2, and the magnetic head 10 attached to the tip of the suspension 11 is in contact with the disk 2. On the other hand, when reproducing the disk 2, the magnetic head 10 is unnecessary. For that purpose, first, the drive mechanism 17 includes the lift plate 16
The lift plate 16 is moved in a direction parallel to the disk 2 until the abutment contacts the suspension 11. Then, the drive mechanism 17 further moves the lift plate 16 along the direction parallel to the disc 2 with the lift plate 16 in contact with the suspension 11. As a result, the lift plate 16 lifts the suspension 11, and as a result, as shown in FIG.
As shown in (b), the magnetic head 10 is separated from the disk 2.

Thus, the disk drive device 10 of the present invention
0, the lift plate 16 is parallel to the disc 2 (see FIG.
5 (b) by moving in the direction of the arrow c)
Since contact / separation with respect to the disk 2 of 0 is performed,
The height of the device is generally h ₂ (h ₂ <
h ₁ ). Therefore, in the disk device 100 of the present invention, the thickness thereof can be reduced as compared with the conventional disk device 50 as shown in FIG.

Next, the disk drive apparatus of the present invention will be described in more detail with reference to FIGS.

FIG. 1 shows a disk drive device 100 of the present invention.
FIG. In FIG. 1, the disk drive device 10 is shown.
The cartridge 1 used for 0 is also shown.

The cartridge 1 has a disk 2 rotatably housed therein. Further, the cartridge 1 has an opening for the optical pickup 7 and the magnetic head 10 to face the disk recording surface.
When the cartridge 1 is placed on the cartridge 0, the shutter 4 moves to expose the opening, and when the cartridge 1 is removed from the disk drive device 100, the shutter 4 returns to its original position and closes the opening. To do.

A spindle motor 6 is fixed to the center of the chassis 5, and the spindle motor 6 rotationally drives the disk 2 stored in the cartridge 1. The optical pickup 7 writes information to the disc 2 and / or reads information from the disc 2, so that the optical pickup 7 can move inside and outside the disc 2 along a guide shaft 8 (see FIG. 4) fixed to the chassis 5. Held in.

Further, the holder 9 can be rotatably attached to the chassis 5. In this case, the rotation shaft of the holder 9 is provided at both ends of the inner part of the chassis 5 as viewed from the insertion opening of the cartridge 1, and the holder 9 can be rotated and raised from the chassis 5 around the rotation shaft. Can be configured.

Further, the tip portion 3 of the cartridge 1 may have a curved region having an outer shape of an arc substantially concentric with the disk 2 housed in the cartridge 1. In this case, when the cartridge 1 is mounted on the holder 9, the drive mechanism 17 can be located in the space defined by the inner wall of the holder 9 and the curved region of the cartridge 1.

FIG. 2 is a partial perspective view showing the structure of the drive mechanism 17 of the present invention. Note that FIG. 2 shows a state in which the cover is removed so that the internal structure of the drive mechanism 17 can be seen.

The holder 9 is attached to the chassis 11 of the disk device 100 so as to be able to rotate and rise by two rotating shafts. At least one of the rotating shafts is provided inside both ends of the holder 9. In FIG. 2, one side of the rotation shaft of the holder 9 is formed inside the end of the holder 9 so that the projection 9 a on the rear portion of the holder 9 engages with the shaft formed on the chassis 5.

When the holder 9 is rotated and lowered after the cartridge 1 is mounted, the disc 2 is ready for recording / reproducing. The magnetic head 10 is provided at the tip of the suspension 11 as in the conventional example, and is connected to the optical pickup 7 by the angle 13 via the suspension 11. The magnetic head base 12 is biased toward the disk 2 by a leaf spring 27 so as to be supported in parallel with the disk 2. Further, the magnetic head base 12 of the present invention is attached at a lower position than the conventional example.

A slide plate 14 may be attached to the holder 9 so as to be slidable parallel to the insertion direction of the cartridge 1 (or the recording surface of the disk 2). In this case, a pair of bearings is provided on the slide plate 14,
The lift plate 16 can be pivotally attached to this. The slide plate 14 is slid in parallel with the insertion direction of the cartridge 1 (or the recording surface of the disk 2) by the drive mechanism 17 arranged at the corner of the cartridge 1. The drive mechanism 17 includes a lift motor 18 and a speed reduction mechanism 1.
9 and a drive arm 20.

Further, as shown in FIG.
Is rotated by the gear train. A cam 29 is provided at the final stage of the gear train, and the cam 29 is engaged with the cam groove 20a of the drive arm 20. With this configuration,
When the lift motor 18 rotates in one direction, the drive arm 20 reciprocally rotates about the rotation shaft 20b. Further, the tip of the drive arm 20 is engaged with the engagement hook 21 of the slide plate 14. As a result, when the lift motor 18 rotates in one direction, the slide plate 14 is lifted by the lift plate 1 installed thereon.
Slide back and forth with 6.

The base 28 of the speed reduction mechanism 19 is fixed to the chassis 5, and the base 28 is provided with a projection 28a having a slit. Further, the protrusion 9b formed on the rear side surface of the holder 9 is engaged with the slit of the protrusion 28a. With such a configuration, when the cartridge 1 is inserted into the holder 9 or pulled out from the holder 9, the force received by the holder 9 is transmitted to the protrusion 28a, and the force received by the protrusion 28a is received by the chassis 5 via the base 28. It is like this. In this way, the protrusion 9b functions as a deformation preventing means installed between the cartridge 1 and the holder 9, and when the cartridge 1 is mounted on the holder 9, the impact of the cartridge 1 on the holder 9 is mitigated. To do. If the holder 9 receives a small force when pulling out the cartridge 1, the protrusion 9b may be provided with an abutting portion only on the back side of the cartridge.

When the optical pickup 7 is sent to the outermost circumference of the disk 2 together with the magnetic head 10, the angle 13 reaches the side of the lift motor 18, and the speed reduction mechanism 19 moves the angle 1.
Crawl under 3.

The lift plate 16 is pressed by a pressing spring 22 so that rattling does not occur. The lift plate 16 is located immediately below the suspension 11 and is in a position where it does not contact the suspension 11 when the slide plate 14 moves so as to come closest to the rotation axis side of the holder 9. At this time, the magnetic head 10 contacts the disk 2. In FIG. 1, the slide plate 14 is located farthest from the rotation shaft side of the holder 9. In this state, the lift plate 16 pushes up the suspension 11 and the magnetic head 10
Is retracted to the upper part of the cartridge and is at a position separated from the disk surface.

A holder link 24 may be provided on the side surface of the holder 9. The holder link 24 is a link member having two ends. One end of the holder link 24 is rotatably attached to the chassis 5 of the disk drive device 100. In addition, a contact portion that contacts the lift plate 16 is provided at the other end. Where the holder 9
Is rotatably attached to the chassis 5, and the lift plate 16 is rotatably attached to the slide plate 14.

When the holder 9 is rotated upward from the chassis 5 so as to eject the cartridge 1, the holder link 24
The abutting portion 25 of the above abuts on the lift plate 16 and the lift plate 16 pivots upward from the slide plate 14. And lift plate 16
Further lifts the suspension 11 so that the magnetic head 10 is further separated from the disk 2.

FIG. 3 is a plan view of the disk drive device 100 of the present invention with the magnetic head 10 lowered. 4 is a cross-sectional view of the disk drive device 100 of the present invention with the magnetic head 10 lowered.

The cartridge 1 is mounted, and the lifting motor 1
When the slide plate 14 moves toward the rotation shaft side of the holder 9 by 8 (in the direction of arrow a in FIG. 3), the lift plate 16 retracts to a position where it does not contact the suspension 11, and the magnetic head 1
0 descends to the recording surface of the disc 2. The magnetic head base 12 is provided at a height where the lift plate 16 can secure a minimum gap that does not come into contact with the suspension 11, and is at a position lower than that of the conventional example. This reduces the device thickness.

FIG. 5 is a plan view of the disk drive device 100 of the present invention with the magnetic head 10 lifted up. 6 is a cross-sectional view of the disk drive device 100 of the present invention with the magnetic head 10 lifted up.

When the slide plate 14 is moved to the position closest to the insertion opening of the cartridge 1 by the elevating motor 18, the lift plate 16 also moves forward with it and comes into contact with the suspension 11 to lift the magnetic head 10. The magnetic head 10 is supported by the lift plate 16 near the gimbal suspension portion 23, and the tip of the magnetic head 10 contacts the magnetic head base 12.

The suspension 11 is bent in the space between the lift plate 16 and the magnetic head base 12 and is retracted above the cartridge 1. Since the magnetic head base 12 is provided at a lower position with respect to the disk 2, the thickness dimension necessary for the upper portion of the cartridge 1 is reduced. At this time, part of the magnetic head 10 may enter the opening of the cartridge 1. Since the tip of the magnetic head 10 is pressed by the magnetic head base 12 and is supported by the lift plate 16 at a position close to the tip of the suspension 11, the magnetic head 10 is resistant to external impact and lifts up. The collision with the disk 2 and the deformation of the suspension 11 can be avoided.

FIG. 7 is a cross-sectional view of the disk drive device 100 of the present invention with the holder 9 being rotated and raised.

The disk drive device 100 has a holder 9 for holding the cartridge 1 and a holder link 24 having two ends. Further, the holder link 24 is a link member having two ends. Holder link 24
Has one end rotatably attached to the chassis 5 of the disk drive device 100. In addition, a contact portion that contacts the lift plate 16 is provided at the other end. Here, the holder 9 is rotatably attached to the chassis 5, and the lift plate 16 is rotatably attached to the slide plate 14.

When the holder 9 is rotated upward from the chassis 5 so as to eject the cartridge 1, the holder link 24
The abutting portion 25 of the above abuts on the lift plate 16 and the lift plate 16 pivots upward from the slide plate 14. And lift plate 16
Further lifts the suspension 11 so that the magnetic head 10 is further separated from the disk 2.

When replacing the cartridge 1, the holder 9
Is rotated around a rotation shaft provided in the inner part of the chassis 5 when viewed from the insertion opening of the cartridge 1.

First, the slide plate 14 is slid toward the opening of the holder 9 so that the lift plate 16 lifts the suspension 11 so that the magnetic head 10 is in the lift-up state. When the holder 9 is rotated, the holder link 24 rises in cooperation with the rise of the holder 9,
The contact portion 25 of the holder link 24 contacts the lift plate 16. Then, the abutting portion 25 urges the lift plate 16 as it is to further lift the lift plate 16. As a result, even if a part of the magnetic head 10 is inserted into the opening of the cartridge 1 during lift-up, the magnetic head 10 is further lifted during cartridge replacement and is completely retracted to the upper part of the cartridge 1. The contact between the cartridge 1 and the magnetic head 10 can be prevented.

FIG. 8 is a sectional view showing another embodiment of the disk drive device of the present invention.

In this embodiment, the inclined projection 26 is provided on the path along which the slide plate 14 slides. The driving mechanism 17 is configured such that the slide plate 14 slides on the inclined protrusion 26 so that the lift plate 16 on the slide plate 14 further lifts the suspension 11.

As a result, the magnetic head 10 can be completely retracted to the upper part of the cartridge 1 at the time of lift-up,
The disc drive device 100 of the present invention can be applied to a read-only disc having no opening in the upper portion of the cartridge, such as an MD (mini disc).

[0072]

According to the present invention, the operation of contacting / separating the magnetic head mounted on the magnetic head supporting member with respect to the disk is performed by the lift plate lifting or not lifting the magnetic head supporting member. As a result, the thickness of the disk drive device can be reduced without requiring a large thickness on the upper portion of the cartridge.

Further, according to the present invention, even if the magnetic head is not completely retracted to the upper part of the cartridge at the time of lift-up, the cartridge can be smoothly replaced without coming into contact with the cartridge. Therefore, the space required above the cartridge can be minimized, and the device can be made thin.

The present invention can also be applied to a read-only cartridge having no opening on the upper surface of the cartridge.

Further, according to the present invention, since it is not necessary to provide a space for the driving mechanism above and below the cartridge or in the periphery thereof, the apparatus can be made compact and thin.

Further, according to the present invention, since at least one of the rotating shafts of the holder is formed inside both ends of the holder, the drive mechanism of the magnetic head lifting mechanism can be arranged at the corner portion of the holder.

Further, according to the present invention, since the member fixed to the chassis receives the force received by the holder when the cartridge is replaced, the holder is deformed by the external force even when the rotating shaft is not at the end of the holder. There is no fear.

[Brief description of drawings]

FIG. 1 is a perspective view of a disk drive device of the present invention.

FIG. 2 is a partial perspective view showing the configuration of a drive mechanism of the present invention.

FIG. 3 is a plan view of the disk drive device of the present invention with the magnetic head lowered.

FIG. 4 is a cross-sectional view of the disk drive device of the present invention with the magnetic head lowered.

FIG. 5 is a plan view of the disk drive device of the present invention with the magnetic head lifted up.

FIG. 6 is a cross-sectional view of the disk drive device of the present invention with the magnetic head lifted up.

FIG. 7 is a cross-sectional view of the disk drive device of the present invention with the holder being rotated and raised.

FIG. 8 is a sectional view showing another embodiment of the disk drive device of the present invention.

FIG. 9 is a perspective view showing a cartridge used in a conventional disk drive device.

FIG. 10 is a plan view showing the configuration of a conventional disk drive device.

FIG. 11 is a cross-sectional view showing the configuration of a conventional disk drive device.

FIG. 12 is a plan view showing a conventional disk drive device with a magnetic head lifted up.

FIG. 13 is a transverse cross-sectional view showing a conventional disk drive device with a magnetic head lifted up.

FIG. 14 is a cross sectional view schematically showing a conventional disk drive device.

FIG. 15 is a cross-sectional view schematically showing the disk drive device of the present invention.

[Explanation of symbols]

1 cartridge 2 discs 3 Cartridge tip 4 shutter 5 chassis 6 Spindle motor 7 Optical pickup 8 Guide shaft 9 holder 10 magnetic head 11 suspension 12 Magnetic head base 13 angles 14 Slide plate 15 Bearing part 16 lift board 17 Drive mechanism 18 Lifting motor 19 Reduction mechanism 20 drive arm 21 Engagement hook 22 Pressing spring 23 Gimbal suspension section 24 Holder link 25 protrusions 26 Inclined protrusion 27 leaf spring 28 base 29 cam 100 disk drive

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Satoshi Minabe             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Tomio Yamamoto             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 5D075 AA03 CF07                 5D076 AA02 BB02 DD01 DD18 GG07

Claims (6)

[Claims] 1. A disk drive device for driving a disk housed in a cartridge, comprising: a magnetic head, a magnetic head for contacting the disk with the magnetic head, and a magnetic head for removing the magnetic head from the disk. A magnetic head supporting member for supporting the magnetic head so as to be separated from each other, a lift plate configured to be able to lift the magnetic head supporting member, and a direction parallel to the disk for the lift plate. Moving means for moving the lift plate along the direction until the lift plate contacts the magnetic head support member, and the lift plate lifts the magnetic head support member. As a result, the lift plate comes into contact with the magnetic head supporting member so that the magnetic head is separated from the disk. Further moved along the lift plate in said direction in a state, the disk device. 2. The disk drive device according to claim 1, further comprising a slide plate on which the lift plate is installed, wherein the moving unit moves the lift plate by sliding the slide plate. 3. A holder for holding the cartridge, and a link member having two ends, one end of which is rotatably attached to the chassis of the disk drive device,
And a link member provided with an abutting portion that abuts the lift plate at the other end, the holder is rotatably attached to the chassis, and the lift plate is attached to the slide plate. The holder is rotatably attached, and when the holder is rotated upward from the chassis so as to eject the cartridge, the abutting portion of the link member abuts on the lift plate and the lift plate slides. 3. The disk drive device according to claim 2, wherein the lift plate is rotated up from the plate, and the lift plate further lifts the magnetic head support member so that the magnetic head is further separated from the disk. 4. An inclined protrusion is provided on a path along which the slide plate slides, and the moving means slides the slide plate so that the slide plate rides on the inclined protrusion. 3. The disk drive device according to claim 2, wherein the lift plate above further lifts the magnetic head support member. 5. A holder for holding the cartridge is further provided, wherein the cartridge has a curved region having an outer shape of an arc substantially concentric with the disk housed in the cartridge, and the cartridge is provided in the holder. 2. The disk drive device according to claim 1, wherein the moving means is located in a space defined by an inner wall of the holder and a curved region of the cartridge when mounted. 6. The holder is attached to a chassis of the disk device so as to be capable of being rotated and raised by two rotation shafts, and at least one of the rotation shafts is located inside both ends of the holder. The disk drive device further includes deformation preventing means between the cartridge and the holder, and the deformation preventing means impacts the holder of the cartridge when the cartridge is mounted on the holder. The disk drive device according to claim 5, which alleviates the above.