JPH0562398A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To secure the clearance between a magnetic disk and a magnetic head, to keep a suspension spring force, and to reduce the occurrence of dust at the time of load/unload, especially, at the time of unload. CONSTITUTION:One end of a beam 8 having a projection 6 in the other end is stuck to a suspension 3. In the unload state, a load bar 7 is moved in the direction of an arrow to push up the beam 8, and the projection 6 is pressed to the suspension 3, and a magnetic disk 1 and a magnetic head 4 enter into the non-contacting state.

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 magnetic disk device having a load / unload mechanism.

[0002]

2. Description of the Related Art In a conventional magnetic disk device, a magnetic head for reading and writing data is supported on the surface of the magnetic disk when the magnetic disk is rotating at an operating rotational speed. The magnetic head is held by a suspension and fixed to a head arm of a linear or rotary actuator. When the magnetic disk device is stopped, the head arm moves to the outermost periphery of the magnetic disk movable range, and the rod-shaped structure rotates and slides between the magnetic disk and the suspension, so that the magnetic disk and the magnetic head are kept in non-contact with each other. Be drunk Load this magnetic head holding mechanism /
It is called the unload mechanism.

The operation of the load / unload mechanism will be described in detail with reference to FIG.

The head arm 2 when the magnetic disk device is stopped
Moves to the outermost periphery of the movable range of the magnetic disk 1 and is locked at that position. In this state, the load bar 7 exists between the magnetic disk 1 and the head arm 2 in a state where they do not contact each other, and the load bar 7 slightly moves in parallel toward the magnetic head 1 from the side of the head arm 2 to The suspension 3 fixed to the head arm 2 is pushed up at an angle toward the disk 1. Therefore, the magnetic head 4 and the magnetic disk 1 are not in contact with each other, and serve as a means for preventing adsorption and the like.

[0005]

In this conventional magnetic disk device, the clearance between the head arm 2 and the magnetic disk 1 is limited, and the load bar 7 is slid in parallel with the clearance and the suspension 3 is pushed. Since it has to be raised, it is difficult to make a large gap between the magnetic disk 1 and the magnetic head 4, and it is extremely dangerous in view of variations in assembly, impact resistance and the like.

Further, since the load bar 7 rubs the suspension 3, there is a problem that the spring force of the suspension 3 is reduced, and there is also a problem of dust generation.

[0007]

SUMMARY OF THE INVENTION A magnetic disk device of the present invention comprises a rotating magnetic disk, a magnetic head for reading and writing data in the vicinity of the magnetic disk, a suspension to which the magnetic head is attached, and a suspension for the magnetic head. A head arm for holding the magnetic disk, the magnetic head being moved and locked in the vicinity of the outermost periphery of the movable range of the magnetic disk in a state where the rotation of the magnetic disk is stopped, and between the magnetic disk and the head arm. The load bar exists in a state where it does not contact with each other, and the load bar makes a minute parallel movement toward the magnetic head from the side of the head arm, thereby pushing up the suspension and making the magnetic head and the magnetic disk non-contact. In the magnetic disk device that comes into contact, fix one end to the suspension. And an elongated spring, and a protrusion provided at either one of the other end of the spring facing the suspension or the surface of the suspension facing the spring near the other end of the spring. ..

The spring may be a plate or a beam-shaped round bar.

[0009]

The present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory diagram of a load / unload operation according to the first embodiment of the present invention.

Immediately before the magnetic disk 1 stops rotating when stopped, the head arm 2 is moved near the outermost circumference of the movable range of the magnetic disk 1 and locked. FIG. 1A shows that state. FIG. 1B shows an unloading state, in which the load bar 7 moves in the direction of the arrow to push up the leaf spring 5, and the projection 6 at one end of the leaf spring 5 pushes up the suspension 3 and unloads it. The loaded state is realized.

FIG. 2 is an explanatory diagram of the load / unload operation of the second embodiment of the present invention.

The basic operation of the second embodiment is almost the same as that of the embodiment of FIG. The different point is the attachment position of the protrusion 6, and in the embodiment of FIG. 2, the protrusion 6 is attached to the suspension 3.

The leaf spring 5 is pushed up by moving the load bar 7 in the direction of the arrow, and one end of the leaf spring 5 pushes against the protrusion 6 provided on the suspension 3 to lift the suspension 3 and unload it. The state has been realized.

FIG. 3 is an explanatory diagram of the load / unload operation of the third embodiment of the present invention.

The basic operation of the third embodiment is exactly the same as that of the embodiment of FIG. The embodiment of FIG. 3 differs from the embodiment of FIG. 1 in that the leaf spring 5 is changed to a beam 8 to form a round bar having a minute diameter. The contact between the beam 8 and the load bar 7 becomes a line contact, so that the unload state can be surely realized.

FIG. 4 is an explanatory diagram of the load / unload operation of the fourth embodiment of the present invention.

The basic operation of the fourth embodiment is exactly the same as that of the embodiment of FIG. The embodiment of FIG. 4 differs from the embodiment of FIG. 1 in that the leaf spring 5 is changed to a beam 8 to form a minute round bar. As a result, the embodiment of FIG. 4 can surely realize the unload state as in the embodiment of FIG.

[0019]

As described above, according to the present invention, by providing the elongated spring and the suspension or the protrusion provided on the spring, sufficient clearance can be secured, and
Since the suspension and the load bar do not rub against each other, the spring force of the suspension can be reduced, and dust generation during loading / unloading can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a load / unload operation according to a first embodiment of this invention.

FIG. 2 is an explanatory diagram of a load / unload operation of the second embodiment of the present invention.

FIG. 3 is an explanatory diagram of a load / unload operation according to a third embodiment of this invention.

FIG. 4 is an explanatory diagram of load / unload operations according to a fourth embodiment of the present invention.

FIG. 5 is an explanatory diagram of a load / unload operation of an example of a conventional magnetic disk device.

[Explanation of symbols]

 1 magnetic disk 2 head arm 3 suspension 4 magnetic head 5 leaf spring 6 protrusion 7 load bar 8 beam

Claims (3)

[Claims] 1. A magnetic disk having a rotating magnetic disk, a magnetic head for reading and writing data in the vicinity of the magnetic disk, a suspension having the magnetic head attached thereto, and a head arm for holding the suspension. The magnetic head is moved and locked in the vicinity of the outermost periphery of the movable range of the magnetic disk in a state where the rotation of the magnetic disk is stopped, and the load bar exists between the magnetic disk and the head arm without contacting each other, In a magnetic disk device in which the magnetic head and the magnetic disk are brought into non-contact with each other by pushing the suspension in parallel by moving the load bar from the side of the head arm toward the magnetic head, the suspension is provided at one end. An elongated spring fixed to the A magnetic disk device comprising: a protrusion provided at either a position facing the pension or a position near the other end of the spring on a surface of the suspension facing the spring. 2. The magnetic disk drive according to claim 1, wherein the spring has a plate shape. 3. The magnetic disk drive according to claim 1, wherein the spring is a beam-shaped round bar.