JPH0536221A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To prevent the damage due to an unprepared impact and to obtain a high reliable device by providing the device having sealed structure, a head loading/unloading mechanism operating at the time of being attached/detached to an external equipment and a lock mechanism. CONSTITUTION:A magnetic disk 13, a magnetic head for recording/reproducing 14 and an actuator for positioning of a head 16 are housed in a thin sealed case 11. A connector terminal 28 is exposed and provided on the outer side surface of the case 11, and the sealed case 11 is provided so as to enable being attached/detached to the external equipment such as a personal computer 31. And a mechanism interlocking the sealed case 11 with being attached/detached action to the external equipment and loading/unloading the magnetic head 14 onto the disk 13, and a mechanism locking/unlocking the actuator 16 are provided. Consequently, when the device is not loaded, the head 14 is in an unloaded condition and comes into no contact with the disk 13 then the unprepared transferring of the actuator 16 is locked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk device, and more particularly to a replaceable card type magnetic disk device which can be attached to and detached from a device housing such as a personal computer, a workstation or a word processor.

A magnetic disk device, particularly a magnetic disk device using a hard disk, has an advantageous feature that it has a larger recording capacity and a faster access speed during recording / reproducing than a magnetic disk device using a floppy disk. However, it is impossible to easily replace the hard disk,
It also has the drawback of being difficult. Therefore, there is a need for a magnetic disk device that allows such a hard disk to be easily replaced.

[0003]

2. Description of the Related Art A conventional magnetic disk device of a removable medium type using a hard disk has an advantage that a hard disk can be appropriately replaced by an operator when data is exchanged between different systems or when a device failure occurs.

[0004]

However, when the disk is replaced, the installation environment of the hard disk and the magnetic head for recording / reproducing with respect to the hard disk is exposed to the atmosphere that contains the most disliked dust and impure gas. Therefore, the dustproof of the installation environment part of the hard disk and the magnetic head becomes incomplete, and it becomes difficult to maintain the hermeticity.

Further, the rotation accuracy of the exchangeable hard disk mounted on the rotary spindle is quite strict, and the axis misalignment is
Since the m-order is required, the holding mechanism of the removable hard disk having the operation compatibility with other devices becomes relatively complicated, which is disadvantageous for high-density recording and miniaturization.

Therefore, if the hard disk and its rotating spindle system and the magnetic head and its carriage system are integrated into a sealed module and this replaceable sealed module is used, the hermeticity can be maintained. However, there is a problem that the reliability is insufficient because the protection against the impact such as a drop during the handling by the operator, the non-operation, or the transportation is insufficient.

In view of the above-mentioned conventional problems, the present invention makes a fixed medium type magnetic disk device into a hermetically sealed card type so that it can be inserted into and removed from a device housing of a computer or the like, and the magnetic head is operated in association with the inserting / removing operation. An object of the present invention is to provide a novel magnetic disk device in which a magnetic disk is loaded / unloaded, and in the unload state, the magnetic disk and an actuator for positioning a head are locked and protected.

[0008]

In order to achieve the above object, the present invention provides a magnetic disk, a recording / reproducing magnetic head, and a head positioning actuator in a thin sealed container. In a magnetic disk device that is housed in and is provided so as to expose the connector terminals on the outer surface of the thin hermetically sealed container, and the thin hermetically sealed container can be inserted into and removed from the device housing. A load / unload mechanism for loading / unloading the magnetic head to / from the magnetic disk is provided in association with the insertion / removal operation with respect to the apparatus housing.

According to a second aspect of the invention, a lock mechanism for fixing the operation of the magnetic disk and the actuator for positioning the head in the unload state is provided in the thin hermetic container.

[0010]

According to the present invention, the fixed medium type magnetic disk device is a replaceable sealed card type, and when mounted in the device housing, the magnetic head is loaded on the magnetic disk to enable the recording / reproducing of information. When not mounted, the magnetic head is unloaded to eliminate contact with the magnetic disk, and the accidental movement of the magnetic disk and the actuator for head positioning is locked to ensure safe and reliable handling. A highly replaceable card-type magnetic disk device can be obtained.

[0011]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic plan view showing an embodiment of a magnetic disk device according to the present invention.

In the figure, reference numeral 11 denotes a thin hermetic container, and at least one magnetic disk 13 mounted on a rotary spindle 12 in the thin hermetic container 11 and recording / reproducing information corresponding to the magnetic disk 13. An actuator 16 for head positioning is provided which supports the magnetic head 14 for performing the above-mentioned operation via a support spring (not shown) and a head arm 15.

In the vicinity of the outer circumference of the magnetic disk 13, a load / unload member 17 for loading / unloading the magnetic head 14 to / from the magnetic disk 13 and the magnetic head 14 are provided.
A stopper 18 for fixing the actuator 16 is arranged near the outer side of the head arm 15 when is unloaded, and a coil spring 20 is attached to one end at a side portion along the magnetic disk 13 and the actuator 16. A drive bar 19 is arranged so as to be movable in its length direction as indicated by an arrow.

Also, the drive bar 19 with its coil spring 20
Includes a first lock lever 21 provided with a pad 23 made of a rubber material or the like for fixing a disk so as to be interlocked with its movement in the length direction, and a second lock lever 22 for pressing the head arm 15 against the stopper 18. They are supported by the support shafts 24 and 25, and arranged so as to be engaged and connected by the projecting pins 26.

Further, on the outer surface of the thin closed container 11,
A driving hole 27 for pressing the other end of the drive bar 19 to operate it, and a drive for inputting / outputting signals for recording / reproducing with the magnetic head 14, a spindle motor (not shown), the head positioning actuator 16 and the like. A connector terminal 28 for power supply connection is provided, and the card-type magnetic disk device 30 having such a configuration has the connector terminal 28.
And a corresponding operation terminal 34 for pressing the other end of the drive bar 19 and operating the corresponding connector terminal 33 on the inner end surface,
For example, a housing portion for a personal computer (device housing) 31
It can be inserted and removed from 32.

The inside of the thin closed container 11 and the drive bar 19
As shown in the partially enlarged cross-sectional view of FIG. 2, an O-ring 29 is interposed between a support shaft 25 supporting the second lock lever 22 to seal the outside area airtightly.

Then, as shown in FIG. 3, the card type magnetic disk device 30 is provided with an accommodating portion 32 of a personal computer 31.
When inserted inside, as shown in FIG. 1, the connector terminal 33 on the side of the accommodating portion 32 and the connector terminal 28 on the side of the card type magnetic disk device 30 are connected and the actuating projection 34 on the accommodating portion 32 side is connected. Drive bar 19 on the card type magnetic disk device 30 side
The other end of the magnetic disk 13 is pressed,
Further, the head arm 15 supporting the magnetic head 14 in the unloaded state on the loading / unloading member 17 is pressed against the stopper 18, and the second lock lever 22 for fixing the actuator 16 and the magnetic disk 13 are pressed and fixed. The first lock lever 21 provided with the pad 23 is rotated in the direction to release the fixation, and the magnetic disk 13 can be rotated, and the magnetic head 14 is loaded and accessible.

When the card type magnetic disk device 30 is taken out from the accommodating portion 32, the drive bar 19 is moved toward the operation hole 27 by the bias of the coil spring 20, and the pad 23 is interlocked with this. The first lock lever 21 and the second lock lever 22 provided with are rotated, the rotation of the magnetic disk 13 is fixedly locked by the first lock lever 21, and the magnetic head 14 is locked by the second lock lever 22. The supported head arm 15 is pressed against the stopper 18 to unload the magnetic head 14 onto the load / unload member 17, and at the same time, the actuator 16 can be fixedly locked.

As a mechanism for locking / unlocking the magnetic disk 13 and the actuator 16, for example, as shown in FIG.
When the lid 31a of the personal computer 31 is closed with the card type magnetic disk device 30 inserted in 32, the protruding pin 35 is pressed to activate the drive bar 19 on the card type magnetic disk device 30 side. It is also possible to lock the magnetic disk 13 and the actuator 16 so that when the lid 31a is opened, the pressed state of the projecting pin 35 is released and the lock is released.

Further, an opening / closing lid which opens / closes in conjunction with the insertion / removal operation of the card type magnetic disk device 30 may be provided at the opening of the accommodating portion 32 of the personal computer 31.

[0021]

As is apparent from the above description, according to the magnetic disk device of the present invention, the inside of the device has a closed structure that is shielded from the outside air, and can be inserted into and removed from and replaced with a device such as a personal computer. Yes, the magnetic head can be loaded / unloaded and the magnetic disk / actuator can be locked / unlocked in conjunction with the insertion / removal operation, so accidental shock during handling or carrying can be protected and safety can be ensured. It has an excellent advantage that a replaceable card type magnetic disk device having high reliability and reliability can be realized.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a magnetic disk device of the present invention.

FIG. 2 is a partially enlarged cross-sectional view for explaining the sealing structure between the inside of the thin closed container and the drive bar disposition region of the present invention.

FIG. 3 is a perspective view for explaining an inserting / removing operation of the magnetic disk device of the present invention with respect to a personal computer.

[Explanation of symbols]

11 Thin airtight container 12 rotating spindle 13 magnetic disk 14 magnetic head 15 head arm 16 actuators 17 Load / unload components 18 stopper 19 Drive bar 20 coil spring 21 1st lock lever 22 Second lock lever 23 pads 24,25 support shaft 26 protruding pin 27 Working hole 28, 33 connector terminals 29 O-ring 30 card type magnetic disk unit 31 personal computer 31a lid 32 accommodation 34 Actuating protrusion 35 protruding pin

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazuhiko Takaishi             1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture             Within Fujitsu Limited

Claims (2)

[Claims] 1. A magnetic disk (13), a magnetic head (14) for recording / reproducing, and an actuator (1) for head positioning.
6) and are housed in a thin hermetically sealed container (11), and provided so that the connector terminals (28) are exposed on the outer surface of the thin hermetically sealed container (11). In a magnetic disk device that can be inserted into and removed from the (31), the magnetic head (14) is inserted into the thin airtight container (11) in association with the insertion / removal operation with respect to the device housing (31). (1
A magnetic disk device characterized in that a load / unload mechanism for loading / unloading is provided for 3). 2. The magnetic disk according to claim 1, wherein a lock mechanism for fixing the operation of the magnetic disk (13) and the head positioning actuator (16) in the unload state is provided in the thin hermetic container. apparatus.