JPS649672B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support spring for a floating magnetic head used in a magnetic disk device.

A floating magnetic head that records and reproduces information on a magnetic disk of a recording medium of a magnetic disk device supports the floating magnetic head when the magnetic disk has stopped rotating, and tracks a desired recording track of the magnetic disk. The magnetic disk is held stationary by being pressed against the magnetic film surface of the magnetic disk by a spring plate connected to an arm that moves the magnetic disk.

When the magnetic disk starts rotating for the purpose of operating the magnetic disk device, the floating magnetic head, which is pressed by a support spring in a fixed position, slides on the magnetic film of the magnetic disk in the initial state and controls the rotation of the magnetic disk. Due to the increase in the air flow generated on the magnetic film surface, the lifting force of the slider of the floating magnetic head resists the spring pressure of the support spring and floats above the magnetic film surface. When the magnetic disk is operating at a constant rotation state, the lifting force of the slider of the floating magnetic head and the spring pressure of the support spring are balanced, and the floating magnetic head continues to levitate at a constant distance from the magnetic film surface, and the drive mechanism allows transferred onto another recording track.

Conventionally, in the floating mechanism of a floating magnetic head as described above, the floating magnetic head is in pressure contact with the magnetic film during sliding, the floating process due to the lifting force of the slider, and the floating process supported by the support spring plate when the floating is completed. The mechanical relationship between the magnetic head and the corresponding magnetic film is extremely unstable, and the distance between the floating magnetic head and the magnetic film is 0.3 even when the floating magnetic head is fully floated.
Because the spacing is as small as [μm], the unstable flying form of the floating magnetic head often causes contact failure between the floating magnetic head and the magnetic film.

In particular, when a floating magnetic head moves between recording tracks in a floating state, a lateral pressure airflow is applied to the slider of the floating magnetic head, making the flying form unstable and making contact with the magnetic film. However, it had drawbacks such as causing breakage accidents.

The present invention provides a support spring plate structure for supporting a floating magnetic head such that the floating magnetic head in a floating state can levitate in a mechanically stable flying form with respect to an opposing magnetic film, and The purpose of this is to prevent the floating magnetic head from coming into contact with the magnetic film.

That is, the present invention supports the floating magnetic head by extending the two independent support plates in the head seek direction so as to suppress the free vibration of each of the two branched support plates located on both sides of the floating magnetic head. The piece connects the tip of the support plate with the inner part that does not interfere with the support of the floating magnetic head, suppresses the independent free vibration of the branching support plate, and stabilizes the flight form of the floating magnetic head in the floating state. This prevents the floating magnetic head from coming into contact with the magnetic film.

Next, the present invention will be explained with reference to examples.

FIG. 1 shows a plan view of a conventional support spring plate. The support spring plate in the figure consists of two strips, A and B.
The floating magnetic head C is supported in the B1 section.

The two supporting parts A1 and B1 have a shape that allows a large degree of freedom in the direction of air flow relative to the floating magnetic head, so that the supporting spring plates A and B, which are connected by the supporting parts A1 and B1, can vibrate freely. Due to these mutually unrelated free vibrations, the flying form of the floating magnetic head becomes unstable and comes into contact with the magnetic film surface.

FIG. 2 is a plan view of the support spring plate according to the invention.

As shown in the figure, the core slider section 1 of the floating magnetic head C swings in the direction of air flow relative to the core slider section 1 (arrow Z direction) and in the direction perpendicular to this air flow direction (arrow Y direction). In order to be movable, there are spring plate parts 2a and 2b provided to extend from support spring plates A and B, respectively, a gimbal spring part 4 supported by the spring plate parts 2a and 2b, and a gimbal spring part 4. It is supported by spring plate portions 5a and 5b provided so as to extend from each other.

The support spring plates A and B are connected at portions A2 and B2 and A3 and B3, respectively, by integrally structured strips D and E made of the same material as the support plate.
The support plates A, B and these strips constitute a support spring plate.

Each strip D and E is formed in the same pattern when the support plates A and B are obtained by machining or chemical etching, and the width of the strips D and E is approximately the width of the support plate A or B. Consists of similar dimensions.

As above, support plates A and B are connected to strips D and E.
By connecting the support plates A and B in such a position that they wrap around the magnetic head C, the support plates A and B are less likely to vibrate independently, and the magnetic head C supported by the support plates A and B is The flight form during levitation is stable.

In particular, the effect of stabilizing the lateral pressure of the airflow during movement between recording tracks is significant.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a conventional support spring plate, and FIG. 2 is a plan view of a support spring plate according to the present invention. A, B...Support plate, D, E...Connection strip.

Claims (1)

[Scope of Claims] 1 A core slider 1; Spring plate portions 5a and 5b each extending in a direction y perpendicular to an air flow direction z with respect to the core slider 1 and supporting the core slider 1; and the core. A gimbal spring part 4 is provided to surround the slider 1 and support the spring plate parts 5a and 5b; supporting plate portions 2a, 2b; and support spring plates A, B extending in a direction perpendicular to the air flow direction z and supporting the floating magnetic head c via one of the spring plate portions 2a, 2b, respectively; The support spring plates A and B are made of the same member as the support spring plates A and B, and are located at positions A2, A3, B2, and B3 on both sides of the support positions of the spring plate parts 2a and 2b. , the air flow direction z so as to connect the support spring plates A and B.
1. A support spring plate for a magnetic head, comprising strips D and E extending from one side to the other.