JPH0562395A - Magnetic disk and lift mechanism for magnetic head - Google Patents

Abstract

PURPOSE:To exclude CSS(contact start stop) for device start/stop between a magnetic disk medium and a magnetic head. CONSTITUTION:A ring 5 having at least two slopes 4a and one recessed groove 3 is provided in an outermost peripheral part 2 of a magnetic disk medium 1, and a slope 4 of a supporting spring 8 of a magnetic head slider 7 provided on a magnetic head Assy 6 is brought into contact with the ring 5 to detach the magnetic head slider 7 from the recording face of the disk medium 1.

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 which is one type of storage device for electronic computers or personal computers, and more particularly to a magnetic disk and magnetic head lift mechanism for storing data.

[0002]

2. Description of the Related Art Conventionally, a magnetic disk head assembly (Assy) mounted on a magnetic disk device for recording and reproducing information contacts a part of a magnetic disk medium of a coating type or a continuous thin film type. The so-called CSS (contact
The start / stop type method is often used.

However, in recent years, the magnetic disk device has been remarkably miniaturized, thinned, and has a large capacity, and the above-mentioned coated magnetic disk medium has been changed to a continuous thin film medium type, and further reliability, especially durability and There is a strong demand for improvement in impact resistance.

Conventionally, as a technique of improving durability and impact resistance of this kind, a fixed cam having an inclined portion is arranged near the outermost diameter portion of the magnetic disk medium, and the magnetic head is provided on the inclined portion of the fixed cam. The Assy is mounted on the magnetic disk medium so as to be detached from the magnetic disk medium, and mounted on the magnetic disk medium to be attached to the magnetic disk medium.

[0005]

The conventional fixed cam described above has a drawback in that it cannot be mounted due to a reduction in the mounting area inside the apparatus as the magnetic disk apparatus becomes smaller and thinner.

An object of the present invention is to provide a lift mechanism for a magnetic disk and a magnetic head that eliminates the CSS operation that was performed when the device was started and stopped.

[0007]

In order to achieve the above object, a magnetic disk according to the present invention is a magnetic disk medium in which a disk medium and a ring are combined, and the disk medium is a data writing device. And a recording surface on which the reproduction is performed, the ring has an inclined portion which is connected to the outermost peripheral edge of the disk medium in a concavo-convex manner and is provided along the entire circumference of the disk medium. Has an inclined surface whose height gradually increases from the inner circumference side to the outer circumference side, and tilts the supporting spring of the magnetic head slider when the magnetic head slider on which the magnetic head is mounted moves to the outermost circumference side of the disk medium. It has a function of bending by the surface to lift the magnetic head from the recording surface of the disk medium.

Further, in the lift mechanism of the magnetic head according to the present invention, the lift mechanism of the magnetic head is formed by combining the ring and the magnetic head assembly, and the ring is a recording medium for writing and reproducing data. The magnetic head assembly floats the magnetic head to the recording surface of the disk medium and has an inclined portion which is connected to the outermost peripheral edge of the disk medium having the surface and is provided along the entire circumference of the disk medium. A magnetic head slider that moves along,
A magnetic head slider support spring for elastically supporting the magnetic head slider, wherein the magnetic head assembly includes a spring for supporting the magnetic head slider when the magnetic head slider moves to the outermost peripheral side of the disk medium. The magnetic head is lifted from the recording surface of the disk medium by being bent by the inclined portion of the ring.

[0009]

According to the present invention, the ring is provided with an inclined portion for lifting the magnetic head, and the ring is attached to the outermost peripheral edge of the disk medium by concavo-convex coupling.

[0010]

The present invention will be described below.

FIG. 1A is a plan view showing an embodiment of the present invention, and FIG. 1B is a partially enlarged sectional view.

In the figure, in this embodiment, a magnetic disk and a magnetic head assembly (Assy) 6 are combined.

As shown in FIGS. 1A and 1B, the magnetic disk comprises a disk medium 1 and a ring 5.

The disk medium 1 has a recording surface on which data is written and reproduced.

The ring 5 is formed as a resin molded body using, for example, Teflon resin or hard silicone rubber. The ring 5 has a concave groove 3 on the inner peripheral side, and is concavely and convexly coupled to the outermost peripheral portion 2 of the disk medium 1 by the concave groove 3.

Further, the ring 5 has inclined portions 4 provided along the entire circumference of the disc medium 1 on the front and back sides of the disc medium 1, respectively. Inclined portion 4 shown in FIG.
Has a linear inclined surface 4a whose height gradually increases linearly from the inner peripheral side to the outer peripheral side.

The linear inclined surface 4a of the inclined portion 4 is inclined upward with respect to the recording surface of the disk medium 1 with an inclination angle of about 5 ° to 12 °.

The magnetic head Assy 6 angularly rotates about a rotation axis 6a, and includes a magnetic head slider 7 for floating a magnetic head (not shown) and moving it along the recording surface of the disk medium 1, and a magnetic head slider 7. It has a magnetic head slider support spring 8 which is elastically supported.

The magnetic head slider support spring 8 has an inclined portion 8a at the front and rear ends.

The operation of the lift mechanism of the magnetic head using the magnetic disk medium shown in FIGS. 1A and 1B will be described.

A magnetic head Assy 6 for writing or reading information is arranged on the disk medium 1.

When the magnetic disk device issues a stop command,
The magnetic head Assy6 follows the control of the circuit section of the device.
It moves from the normal recording area position to the outermost peripheral side of the disk medium while controlling the speed.

At this time, the support spring 8 of the magnetic head slider 7 included in the magnetic head Assy 6 is attached to the inclined surface 4a of the inclined portion 4 provided on the ring 5 provided on the outermost peripheral portion 2 of the magnetic disk medium 1. The inclined portion 8a abuts as shown in FIG.
It is possible to separate it from the recording surface of.

Further, when an operation command of the apparatus is issued from the control circuit, the magnetic head Assy that is in contact with the ring 5
The support spring 8 of 6 moves from the outer peripheral side of the magnetic disk medium 1 to the inner peripheral side while sliding smoothly on the inclined surface 4a of the inclined portion 4 provided on the ring 5. As a result, the magnetic head As
The magnetic head slider 7 included in sy6 can be attached to the recording surface of the disk medium 1.

Further, as described above, the magnetic head assembly
The magnetic head slider 7 can be detached from the disk medium 1 by contacting the ring 5 at the outermost peripheral portion 2 of the disk medium 1 with the support spring 8 included in the disk medium 1. Therefore, when the conventional apparatus is started and stopped. It is possible to eliminate the CSS that was used.

In this way, it is possible to prevent the damage due to the external force generated when the apparatus is moved or transported and stored, and the attraction between the disk medium 1 and the magnetic head slider 7 is prevented. Therefore, it is possible to finally prevent the durability of the device from being lowered.

FIG. 3 is an enlarged sectional view showing another embodiment of the present invention.

In this embodiment, the inclined surface 4a of the inclined portion 4 is formed into a curved surface shape 9.

The magnetic head As is attached to the inclined surface 4a of the curved shape 9.
By contacting the support spring 8 provided in sy6, the magnetic head slider 7 can be disengaged from the disk medium 1 by the operation command described in the embodiment of FIG.
It is possible to obtain the same effect as that of the embodiment of FIG.

[0030]

As described above, according to the present invention, a ring having an inclined portion is formed on the outermost peripheral portion of a disk medium by concavo-convex coupling,
By abutting a support spring provided in the magnetic head Assy on the ring, the magnetic head slider can be detached from the surface of the disk medium, and the CSS that was used when the conventional device was started and stopped can be eliminated. Therefore, the reliability of the device can be improved.

[Brief description of drawings]

FIG. 1A is a plan view showing an embodiment of the present invention,
(B) is a partially enlarged view.

FIG. 2 is an enlarged view showing an operation.

FIG. 3 is a sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disk medium 2 Outermost peripheral portion 3 Recessed groove 4 Sloping portion 4a Sloping surface 5 Ring 6 Magnetic head Assy 7 Magnetic head slider 8 Support spring 9 Curved shape

Claims (2)

[Claims] 1. A magnetic disk medium which is a combination of a disk medium and a ring, the disk medium having a recording surface on which data is written and reproduced, and the ring is the disk medium. The outermost peripheral edge is concavo-convexly coupled, and has an inclined portion provided along the entire circumference of the disk medium, and the inclined portion has an inclined surface whose height gradually increases from the inner peripheral side to the outer peripheral side, When the magnetic head slider carrying the magnetic head moves to the outermost peripheral side of the disk medium, it has a function of bending the supporting spring of the magnetic head slider on the inclined surface to lift the magnetic head from the recording surface of the disk medium. A magnetic disk characterized by being a thing. 2. A lift mechanism for a magnetic head comprising a combination of a ring and a magnetic head assembly, wherein the ring has an uneven coupling on the outermost peripheral edge of a disk medium having a recording surface on which data is written and reproduced. The magnetic head assembly includes a magnetic head slider that floats the magnetic head and moves it along the recording surface of the disk medium, and a magnetic head slider that has an inclined portion that is provided along the entire circumference of the disk medium. And a magnetic head slider support spring for elastically supporting the slider, wherein the magnetic head slider has a support spring for the magnetic head slider that tilts the ring when the magnetic head slider moves to the outermost peripheral side of the disk medium. Of the magnetic head, wherein the magnetic head is lifted from the recording surface of the disk medium by being bent by the portion. Lift mechanism.