JP2558388Y2 - Disk unit - Google Patents

Description

[Detailed description of the invention]

[0001]

INVENTION The present invention relates relates to a disk apparatus, particularly to disk apparatus configured to accommodate the thickness of the apparatus.

[0002]

2. Description of the Related Art For example, in a magnetic disk device called a hard disk device, a plurality of disks are stacked coaxially to increase the storage capacity. In this type of apparatus, a plurality of disks are coaxially fixed to a motor hub of a disk drive motor by a disk clamp mechanism.

[0003] On the base, a drive motor for driving the magnetic disk to rotate, a head arm for supporting the magnetic head, and an actuator for driving the head arm so that the magnetic head moves along the recording surface of the magnetic disk. Is provided. A connector to which a cable drawn from a computer is connected is provided below the base, and the dimensions and shape of the connector are determined by standards.

[0004]

However, in the above-mentioned magnetic disk drive, the number of magnetic disks increases with the increase of the storage capacity, so that the height of the drive itself increases, and the storage capacity is increased and the computer capacity is increased. There is also a demand for a thinner type that fits in the storage space on the side.

However, the distance between the magnetic disks is determined by the thickness of the magnetic head, and the height of the lower part of the base cannot be changed by the above connector, so that it is difficult to reduce the thickness of the apparatus. . The present invention aims to provide a disk device in which the above-described problems.

[0006]

According to the present invention, a disk is rotated.
A drive motor for rotating the disk and reading a signal to the disk.
A head for reading and writing, and the head
Head support means for supporting the disc so as to be movable in the radial direction of the disc,
A connector for making an electrical connection to an external device
The disk drive provided in the drive,
The motor, the head and the head supporting means are
Same direction with respect to scan, by the same angle inclined, the head
A first space is formed below the disk on the side located above.
On the disk on the side where the head is located below.
A second space is formed in the first and second spaces.
The connector is stored in one of the spaces.
It is characterized by the following.

[0007]

According to the present invention, the drive motor, the head and the head are provided.
In the same direction and at the same angle with respect to the base
To support the disc in an inclined state.
Space above or below the tilted disc.
Can be Also, the magnetic disk is located above
Forming a first space below the side and a magnetic disk
Forming a second space above the side where is located below
Can be created, so one of the first and second spaces
Storing the connector in the space makes the device thinner
Can be achieved.

[0008]

1 to 3 show the present invention.Disk unit
1 shows a magnetic disk device as one embodiment.Magnetic disk
The magnetic device 1 is mounted on a base 2 made of aluminum die-cast.
Drive motor 4 for driving disks 3a to 3d, magnetic head 5
Head arm supporting a to 5h(Head support means)
6. An actuator 7 for driving the head arm 6 is provided.
It becomes.

The magnetic disk drive 1 comprises a base 2 and a base 2
The four magnetic disks 3a to 3d are accommodated in a space 9 formed between the magnetic disk 3 and the cover 8 that covers the magnetic disk, thereby increasing the storage capacity. On the lower side of the base 2, a connector 10 to which a cable from a computer (not shown) is connected.
And a substrate (not shown). The dimensions, shape, number of pins, and the like of the connector 10 are determined by standards.

Since the base 2 is made of aluminum die-cast, the mounting surface 11 of the drive motor 4, the mounting surface 12 of the head arm 6, and the mounting surface 13 of the actuator 7 are integrally formed by a metal mold. To 13 are cut. Each of the mounting surfaces 11 to 13 is at a predetermined angle θ with respect to the plane portion 2a of the base 2 (about 1.5 ° in this embodiment).
It is formed so as to be inclined. The mounting surfaces 11 to 13 are inclined at the same angle and in the same direction.

That is, each of the mounting surfaces 11 to 13 is inclined in the direction opposite to the position where the connector 10 is mounted, and the magnetic disks 3a to 3d are inclined so that the connector 10 is lifted up and the head arm 6 is lowered. ing. As shown in FIG. 4, the drive motor 4 is fixed on a mounting surface 11 inclined at a predetermined angle θ, and a motor hub 14 supporting the magnetic disks 3a to 3d is rotatably supported on the upper part of the drive motor 4. A ring-shaped spacer 15 is interposed between the magnetic disks 3a to 3d, and the uppermost magnetic disk 3d is pressed by a clamper 28 fixed to the upper end of the motor hub 14 by a screw 27.

The driving motor 4 has a stator 16 with a screw 17.
And the stator 16 is provided with a drive coil 18. A support shaft 19 is inserted into a center hole 16 a of the stator 16, and a cover 8 is fixed to an upper end of the support shaft 19 by screws 21.

A rotor 22 of the drive motor 4 is disposed on the outer periphery of the drive coil 18 so as to face the same. The rotor 22 is formed in an annular shape, and an annular magnet 23 is fixed to an inner peripheral surface thereof. The rotor 22 is fixed to the bottom of the motor hub 14, and drives the motor hub 14 and the magnetic disks 3a to 3d to rotate.

Since the motor hub 14 is rotatably supported via bearings 24 and 25 fitted to the support shaft 19, the motor hub 14 rotates at a high speed by the rotational driving force of the driving motor 4. Magnetic heads 5a to 5h supported by leaf spring-like supports 26a to 26h extending from arm portions 6a to 6e of the head arm 6 with respect to the upper and lower surfaces of the magnetic disks 3a to 3d.
Slightly floats to perform magnetic recording and reproduction.

Here, in the disk clamp mechanism having the above structure, since the magnetic disks 3a to 3d are provided on the mounting surface 11 inclined at the predetermined angle θ, the center of gravity is When the magnetic disks 3a to 3d rotate off the center, the rotation speed of the magnetic disks 3a to 3d rotating integrally with the motor hub 14 tends to be different between when rotating upward from below and when rotating downward from above, and the disk rotation speed is constant. Disappears. For this purpose, a hole 28 a for inserting a balance adjusting screw 29 other than the screw 27 is formed in the clamper 28, and a screw hole (not shown) for screwing the screw 29 is provided at the upper end of the motor hub 14. ing.

The holes 28a are formed alternately with holes through which the screws 27 for fixing the disk are inserted (hidden and invisible by the screws 27 in FIG. 1). Then, at the time of the assembling process, for example, the magnetic disks 3a to 3d are set upright so that the magnetic disks 3a to 3d are in a vertical state.
The balance adjusting screw 29 is inserted through one of the holes 28a so that d does not rotate.

The balance adjusting screw 29 allows the magnetic disks 3a to 3d to rotate stably despite being inclined at a predetermined angle θ. Further, each of the magnetic disks 3a to 3d
As shown in FIG. 2, the connector 10 is inclined upward so that the side of the connector 10 is lifted up and the side of the head arm 6 is lowered, but the lowermost magnetic disk 3a is provided in the base 2 with a gap Sa (about 1.3).
mm) , the connector 1
A space (first space) for storing 0 can be secured.
Further, the uppermost magnetic disk 3d is also provided with a gap Sb in the cover 8.
Not contact via (approximately 1 mm), header between the cover 8
Space for storing the actuator 7 of the arm 6
(Second space) can be secured.

Accordingly, the height of the magnetic disk drive 1 can be made smaller than in the prior art to reduce the thickness.
That is, conventionally, a gap is formed between the uppermost magnetic disk 3d and the cover 8 so that the upper end of the motor hub 14 does not abut on the cover 8, and the uppermost magnetic disk 3d is located in this gap. This enables a reduction in thickness.

The head arm 6 is mounted on the mounting surface 1 of the base 2.
The shaft 30 that is screwed into the screw hole 12a provided on the shaft 2 and stands upright
Are supported via bearings 31 and 32, and support portions 26a to 26h supporting the magnetic heads 5a to 5h at one end.
Is fixed, and the driving coil 33 of the actuator 7 is attached to the other end.
Is attached. Since the mounting surface 12 is also inclined at the same angle in the same direction as the mounting surface 11, the shaft 30 stands upright in parallel with the support shaft 19 supporting the motor hub 14. Therefore, each of the magnetic heads 5a to 5h, together with the head arm 6 driven by the actuator 7,
The magnetic recording and reproduction are performed while moving along the 3d recording surface while floating.

As shown in FIG. 2, since the head arm 6 is inclined at a predetermined angle θ, the uppermost arm 6e to which the support 26h is attached can be made thicker, and the strength is increased. Further, in the actuator 7, a sector-shaped magnet 35 (broken line in FIG. 1) is attached to a lower yoke 34 fixed to the mounting surface 13 of the base 2 at a vertical position facing the drive coil 33 mounted on the head arm 6. ) And an arc-shaped upper yoke 36 are provided. Since the position of the lower yoke 34 is lowered by an amount corresponding to the inclination of the mounting surface 13 of the base 2, the thickness of the upper yoke 36 can be increased. As a result, the actuator 7 is less likely to be magnetically saturated, the driving torque can be increased, and the leakage magnetic flux can be reduced, so that the driving efficiency of the head arm 6 can be improved.

As described above, the drive motor 4 for driving the magnetic disks 3a to 3d, the head arm 6 for supporting the magnetic heads 5a to 5h, and the actuator 7 for driving the head arm 6 are inclined at the same angle in the same direction. Therefore, the storage capacity of the magnetic disks 3a to 3d can be increased, the device can be made thinner, and a space for mounting the connector 10 can be secured.

In the above-described embodiment, an apparatus in which four magnetic disks are mounted is described as an example. However, the present invention is not limited to this.
For example, it is needless to say that the present invention can be applied to a configuration in which one or two or more magnetic disks are coaxially stacked.
In the above embodiment, the driving motor 4, the head arm 6,
The mounting surfaces 11, 12, and 13 of the actuator 7 are provided on the base 2 by integral molding.
For example, a spacer having an inclined surface may be mounted and fixed on the base 2. In this case, a positioning boss may be provided on the base such that the inclined surfaces of the spacers are in the same direction.

Further, the inclination direction of each of the mounting surfaces 11, 12, 13 is not limited to the above embodiment, and it goes without saying that it may be inclined in other directions. In the above embodiment, the magnetic
Although the description has been given of the case of the
For example, an optical disk device or a magneto-optical disk device
It is needless to say that the present invention can be applied to the above.

[0024]

[Effect of the invention] As described above, disk apparatus according to the present invention, the drive motor, the head and the head supporting means to the base
Since the disk is tilted in the same direction and at the same angle,
It can be supported in an inclined state, and the inclined display
A space can be formed above or below the workpiece. Ma
In addition, the first empty space is located below the side where the magnetic disk is located above.
The side where the gap is formed and the magnetic disk is located below
The second space can be formed above the
Connect the connector to either one of the first and second spaces
By storing, the device can be made thinner.
You. Also, a second empty space is provided above the side where the disk is located below.
Since the gap can be secured , the upper arm portion of the head arm can be thickened to increase the strength, and the upper yoke of the actuator can be thickened to increase the driving torque.

[Brief description of the drawings]

Is a plan view of an embodiment in disk device according to the disclosed exemplary invention.

FIG. 2 is a longitudinal sectional view taken along the line II-II in FIG.

3 is a side view showing a connector attached to disk device.

FIG. 4 is an enlarged longitudinal sectional view showing a drive motor and a motor hub.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic disk drive 2 Base 3a-3d Magnetic disk 4 Drive motor 5a-5h Magnetic head 6 Head arm 7 Actuator 8 Cover 10 Connector 11-13 Mounting surface 14 Motor hub 18 Drive coil 19 Support shaft 28 Clamper 29 Balance adjustment screw 33 Drive Coil 34 Lower yoke 36 Upper yoke

Claims (1)

(57) [Scope of request for utility model registration] A drive motor for driving a disk to rotate;
To read / write signals to / from the disk
Head and the head can be moved in the radial direction of the disc.
Head support means for supporting and electrical connection with external devices
And a connector provided on the base.
The drive motor, the head, and the head support means.
The head is tilted in the same direction and at the same angle with respect to the base, and
A space above the disk on the side where the head is located below.
2 space is formed, and the space is formed in one of the first and second spaces.
A disk device containing a connector.