JPH02128382A - Arm of magnetic disk device - Google Patents

Abstract

PURPOSE:To reduce the load on the spindle motor of a magnetic disk device and to reduce the heat generation of the device by obliquely cutting the surface of the arm of the device in parallel with the radial direction of a magnetic disk. CONSTITUTION:The surface C in parallel with the radial direction of a magnetic head 11 of an arm 10 which is provided with a head 12 for performing data writing/reading against the disk 11 and driven by means of a carriage 13 so as to position the head 12 to an aimed track is obliquely cut so that the air resistance of the arm 10 can be reduced. As a result, the load on a spindle motor decreases and the heat produced by this magnetic disk device can be reduced.

Description

Detailed Description of the Invention [Summary] An arm of a magnetic disk device that is provided with a head for writing/reading data on a magnetic disk, and is driven by a carriage so that the head is positioned on a target track. With regard to Configure.

[Industrial Application Field] The present invention relates to an arm of a magnetic disk device, which is provided with a head for writing/reading data on a magnetic disk, and is driven by a carriage so that the head is positioned on a target track. Regarding.

In recent years, magnetic disk drives are required to have higher data transfer speeds, and spindle motors that rotate magnetic disks have been made faster. As a result, the air resistance due to the arm increases, which increases the load on the spindle motor and increases the heat generated by the magnetic disk device.Therefore, it is desired to reduce the air resistance due to the arm.

[Prior Art] Next, a conventional example will be explained using the drawings. FIG. 7 is a configuration diagram of a conventional magnetic disk device, and FIG. 8 is a diagram explaining the arm in FIG. 7, in which (a) is a plan view, (b) is a front view,
(c) is a left side view.

In these figures, 1 is a spindle with a built-in spindle motor, and 2 is a plurality of magnetic disks attached to the spindle 1. The magnetic disk 2 is driven by a spindle motor to rotate at a constant speed (for example, 3600 rpm) in the direction indicated by the dotted arrow. 3.4
is a head that is provided facing each disk surface and writes/reads data to/from the disk 2. Head 3.
4 is provided on an arm 5 provided opposite each disk surface. A carriage (actuator) 6 moves the head 3.4 to a target track via the arm 5. In addition, in FIG. 7, solid line arrows indicate the flow of wind generated as the disk 2 rotates.

[Problems to be Solved by the Invention] In the conventional example with the above configuration, the shape of the arm 5 is as shown in FIG. Orthogonal.

Therefore, there is a problem that the air resistance due to the arm 5 increases, the load on the spindle motor increases, and the heat generation of the magnetic disk device increases.

The present invention has been made in view of the above problems, and an object thereof is to provide an arm for a magnetic disk device that can reduce the load on the spindle motor and reduce heat generation of the magnetic disk device.

[Means for Solving the Problems] FIG. 1 is a diagram showing the principle of the present invention, and FIG. 2 is a sectional view taken along line B-8 of the principle diagram shown in FIG.

In FIG. 1, reference numeral 10 denotes an arm of a magnetic disk device, which is provided with a head 12 for writing/reading data on a magnetic disk 11, and is driven by a carriage 13 so that the head 12 is positioned on a target track. It is.

A surface C of the arm 10 parallel to the radial direction of the disk 11 is cut diagonally.

[Operation] In the arm of the magnetic disk drive shown in FIG. 1, since the surface C of the arm 10 parallel to the radial direction of the disk 11 is cut obliquely, air resistance due to the arm 10 is reduced.

[Example] Next, an example of the present invention will be described using the drawings. Third
The figure is a configuration diagram showing one embodiment of the present invention, and FIG. 4 is a diagram explaining the arm shown in FIG. 1, in which (a) is a plan view, (b) is a front view, (c) is a left side view, FIG. 5 and FIG. 6 are diagrams explaining other embodiments.

In FIG. 3, 21 is a spindle with a built-in spindle motor, and 22 is a plurality of magnetic disks attached to the spindle 21. The magnetic disk 22 is driven by a spindle motor to rotate at a constant speed in the direction of the dotted arrow. Heads 23 and 24 are provided opposite to each disk surface and read/write data to/from the disk 22 . The heads 23, 24 are mounted on arms 25 provided opposite each disk surface. A carriage (actuator) 26 moves the heads 23 and 24 to a target track via the arm 25. In addition, in FIG. 3, solid line arrows indicate the flow of wind generated as the disk 22 rotates.

As shown in FIGS. 4(a) to (C), the arm 25 is parallel to the radial direction of the disk, and the distal end surface E of the arm 25 is cut obliquely so that the cross-sectional shape has a pointed shape. ing.

According to such a configuration, the air resistance caused by the arm 25 is smaller than that of the conventional example. Therefore, the load on the spindle motor is reduced, and the heat generated by the magnetic disk device is reduced.

Note that the present invention is not limited to the above embodiments.

For example, in the above embodiment, the surface of the arm 25 parallel to the radial direction of the disk and the tip surface E of the arm 25 are:
Although the arm 30 is cut diagonally so as to have a pointed cross-sectional shape, the arm 30 may have a tapered surface as shown in FIGS. 5(a) and 5(b). Further, the diagonally cut surface may be only a surface parallel to the radial direction of the disk.

Furthermore, although the above embodiments have been described using a linear type carriage, the present invention can also be applied to an arm 32 driven by a rotary type carriage 31 as shown in FIG.

[Effects of the Invention] As explained above, according to the present invention, the surface parallel to the radial direction of the magnetic disk is cut diagonally, thereby reducing the load on the spindle motor and the heat generation of the magnetic disk device. It is possible to realize an arm of a magnetic disk device that can perform

[Brief explanation of the drawing]

Fig. 1 is a diagram of the principle of the present invention, Fig. 2 is a sectional view taken along line BB of the principle diagram shown in Fig. 1, Fig. 3 is a configuration diagram showing an embodiment of the present invention, and Fig. 4 is a diagram of the principle diagram shown in Fig. 1. FIG. 5 and FIG. 6 are diagrams explaining other embodiments, FIG. 7 is a configuration diagram of a conventional magnetic disk device, and FIG. 8 is a diagram explaining the arm shown in FIG. 7. It is a diagram. 1 to 6, 10.25.30.32 is an arm, 11.22 is a magnetic disk, 12.23.24 is a head, and 13.26 is a carriage.

Claims (1)

[Claims] A head (12) for writing/reading data to/from a magnetic disk (11) is provided, and a carriage (13) positions the head (12) on a target track. Arm (10) of a driven magnetic disk device
An arm for a magnetic disk device, characterized in that a surface parallel to the radial direction of the magnetic disk (11) is cut obliquely.