JPH0192976A - Magnetic head support mechanism - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head mounting device for a magnetic disk drive, and more particularly to a magnetic head support suitable for supporting a core slider of a floating magnetic head.

[Conventional technology]

The conventional magnetic head support mechanism is disclosed in Japanese Patent Application Laid-Open No. 55-22296.
As described in the publication, as shown in FIG. 2, a relatively soft gimbal section 2 that elastically holds the core slider 1, an elastic section 3 that supports the gimbal section 2, and a load beam section 4 are provided. It is made up of parts that serve both purposes. However, it was necessary to prevent a phenomenon in which a lift force is generated on the core slider 1 due to an increase in the viscous force of the air flow as the temperature inside the magnetic disk device increases, and the recording/reproducing signal decreases due to the increase in flying height. .

[Problem that the invention seeks to solve]

In the conventional technology, a lifting force is generated in the core slider 1 due to an increase in the viscous force of the air flow as the temperature inside the magnetic disk device increases, and the problem is that the recording/reproducing signal decreases due to the increased flying height. Ta.

An object of the present invention is to provide a simple structure in which the viscous force of the air flow increases as the temperature inside the magnetic disk drive increases.
When a lift force is generated and exerts a force on the magnetic head support mechanism, the floating of the core slider 1 is stabilized by minimizing the influence and reducing the amount of displacement of the magnetic head support mechanism,
An object of the present invention is to provide a magnetic head support mechanism that stabilizes recording and reproduction signals.

[Means for solving problems]

The above purpose is to form a minute protrusion 5 in a portion near the load beam portion or the elastic spring portion of the magnetic head support mechanism, that is, near the boundary between the load beam portion 4 or the elastic portion 3 and the load beam portion 4. This is achieved by providing a thermal expansion member 6 that comes into contact with the protrusion 5 at a temperature above a certain temperature and attaching it to the magnetic head support mechanism.

[Effect]

In the magnetic head support mechanism, a minute protrusion 5 is provided near the boundary between the load beam section 4 or the elastic section 3 and the load beam section 4, and the heat generated when the members come into contact with each other due to thermal expansion at a temperature higher than the temperature at the protrusion 5 is prevented. The expansion member 6 is mounted on the magnetic head support mechanism. As a result, the viscous force of the airflow increases as the temperature inside the magnetic disk device increases, generating lift force on the core slider 1, and the magnetic head support mechanism receives the force in the direction of increasing the flying height and tries to be displaced. Also, the thermal expansion member 6 comes into contact with the protrusion 5 due to thermal expansion and displacement can be suppressed, so that the flying height can be stabilized.

Further, since the contact state between the thermal expansion member and the elastic part is stabilized by interposing the minute protrusions, the floating state of the core slider 1 can be stabilized.

〔Example〕

An embodiment of the present invention is shown in FIG. This magnetic head support mechanism consists of a relatively soft gimbal section 2 that holds the core slider 1, a member that also serves as an elastic section 3 that supports the gimbal section 2, and a load beam section 4. Further, a pivot 5 is formed near the boundary between the elastic part 3 and the load beam part 4. The pivot 5 can be easily formed by pressing or the like. Furthermore, a thermal expansion plate 6 that comes into contact with the pivot 5 at a temperature higher than a certain temperature is attached to the fixed end side of the magnetic head support mechanism, and as the thermal expansion plate 6 expands due to thermal expansion, an appropriate load is applied to the pivot part. is added to prevent the increase in floating height.

This magnetic head support mechanism is as shown in FIG.
The guide arm 7 is further assembled into the carriage 8. The core slider 1 is pressed against a magnetic recording medium (disk) 9 by a loading beam section 4 with a certain set load. The core slider 1 floats with a balance between the lifting force caused by the airflow accompanying the rotation of the disk 9 and the force of the pressing of the load beam section 4, and serves as a mechanism to maintain a desired flying height between the core slider 1 and the disk 9. .

According to the embodiment of the present invention, the viscous resistance of the airflow increases as the temperature inside the magnetic disk device increases, and the core slider 1
When further lift is added to the magnetic head support mechanism and the magnetic head support mechanism receives a force in the direction of increasing the flying height, the thermal expansion of the thermal expansion plate 6 applies a force to properly press the pivot 5, and the force is applied in the direction of increasing the flying height. By canceling out, the flying height of the core slider 1 is stabilized.

This has the effect of stabilizing the recording/playback signal.

To explain the effect of the present invention in more detail, as shown in FIG.
By pressing, the desired flying height can be maintained by the balance of forces. As the temperature of the magnetic disk drive increases, the viscous resistance of the airflow increases as shown in FIG. 4(b), and when lift is further applied to the core slider 1, the load beam section 4 is displaced in the opposite direction with respect to the disk 9. try to. The effect of the present invention is that the thermal expansion plate 6 also thermally expands due to the temperature rise inside the magnetic disk drive, and presses the pivot 5 provided near the boundary between the elastic part 3 and the load beam part 4, thereby increasing viscous resistance. , cancels the lift force applied to core slider 1 and moves core slider 1
The flying height can be stabilized.

For example, the molding position or shape and size of the pivot 5, the shape and size of the contact force of the thermal expansion plate 6 to the pivot 5, etc. may be optimized in each case, and the thermal expansion Board 6 is.

For example, a member such as a shape memory alloy may be used as long as it has the same characteristics as the above embodiment.

〔Effect of the invention〕

According to the present invention, the temperature inside the magnetic disk device increases,
Since the viscosity of the air flow increases and the influence of lift on the magnetic head support mechanism can be canceled out, the floating of the core slider 1 is stabilized and the recording/reproduction signal is stabilized.

[Brief explanation of the drawing]

1 is a plan view and a front view of a magnetic head support mechanism according to an embodiment of the present invention, FIG. 2 is a plan view and a front view of a conventional magnetic head support mechanism, and FIG. 3 is a view of a magnetic head in a magnetic disk device. FIG. 4 is an explanatory diagram of the operation of the magnetic head support mechanism according to the present invention. 1... Core slider, 2... Gimbal section, 3...
...Elastic part, 4...Loading beam part, 5.
... Pivot, 6... Thermal expansion plate. 7...Guide arm, 8...Carriage, Taku/Concave CD) Horse 2 Same CD) (b) Hitozuni

Claims (1)

[Claims] 1. In a magnetic head support mechanism consisting of a relatively soft gimbal section that elastically holds the core slider, and a member that serves as both an elastic section that supports the gimbal section and a load beam section, the load beam section or elastic A magnetic head support, characterized in that one or more minute protrusions are formed in the vicinity of the boundary between the load beam part and the load beam part, and a thermal expansion member is attached to the protrusion part, which contacts the protrusion part at a temperature higher than a certain temperature. mechanism.