JPH03256282A - Elastically supporting arm structure for slider for magnetic disk device - Google Patents

Abstract

PURPOSE:To stabilize the floating of a slider by providing a bank-shaped plate which receives air to flow accompanying the rotation of a medium and is inclined, and making the air flow of a direction to make the air distant from the surface of the medium. CONSTITUTION:A spring arm 18 to support elastically the slider 14 consists of sheet metal with a spring property, and it is provided with the band-shaped plates 18a, 18b at its one edge. Then, the air A1, A2 flowing at the upper and the lower sides of the principal plane of the arm 18 can be caught, and can be made to flow along the band-shaped plates 18a, 18b. The inclination angle of the band-shaped plates 18a, 18b is set so that the direction of air to flow after being caught becomes the direction to make it distant from the magnetic disk medium 24. Here, the spring arm 18 fits the slider 14 at a position to make it float from the medium 24 during the standstill of the medium 24, and when the medium rotates, it flows the air A1, A2. Then, rubbing between the medium 24 and the slider 14 can be avoided, and the stable floating of the slider 14 can be attained.

Description

[Detailed Description of the Invention] [Required] This invention relates to the structure of a spring arm that elastically supports a slider for holding a magnetic head element for writing to or reading from a magnetic recording medium in a magnetic disk device and flying above the medium. , with the purpose of reducing friction between the slider and the medium and further stabilizing the slider's flying, is a spring arm structure that elastically supports the slider floating opposite to the surface of the magnetic recording medium, The slider is installed at a position where the slider floats above the surface of the medium when the medium is at rest, and is provided along the longitudinal direction of the slider to receive air flowing as the medium rotates. A belt-like plate having an inclination that causes the flow of the medium in a direction away from the plane of the medium is provided.

[Industrial application field]

The present invention relates to the structure of a spring arm that holds a magnetic head element for writing to or reading from a magnetic recording medium in a magnetic disk drive and elastically supports a slider for floating above the medium.

(1) (2) [Prior Art] Conventionally, when the magnetic recording medium is stationary, the slider is stationary on the surface of the medium, and when it starts rotating, the spring force of the spring arm that elastically supports the slider is applied. against,
A mechanism is adopted in which the slider is floated by the pressure of air flowing between the slider and the medium.

[Problem to be solved by the invention]

However, the above-mentioned floating mechanism has a problem in that the medium and slider rub against each other for a short period of time from when the medium first rotates until when the slider floats. especially,
As the rotational speed of the medium increases with the reduction of access time, the above-mentioned rubbing becomes a serious problem, and it is also necessary to stabilize the floating state of the slider.

Therefore, it is an object of the present invention to reduce the friction between the slider and the medium and further stabilize the floating of the slider.

[Means for Solving the Problems] In view of the above object, the present invention provides a structure of a spring arm that elastically supports a slider floating opposite to the surface of a magnetic recording medium, wherein the slider is suspended when the medium is stationary. is attached at a position where it floats above the surface of the medium, is provided along its longitudinal direction, receives air flowing as the medium rotates, and directs the air away from the surface of the medium. Provided is a spring arm structure for elastic support of a slider in a magnetic disk device, characterized in that a belt-like plate having an inclination that allows the flow to flow is provided.

[For production]

Unlike the conventional method, when the medium is stationary, the slider holding the magnetic head element is supported by a spring arm and floats, but when the medium begins to rotate, the band-shaped plate receives the air flow accompanying this rotation, and the slider holds the magnetic head element. The spring (3) (4) arm bends in the direction of the medium in response to the reaction force generated by the air flowing away from the medium due to the inclination, and moves the magnetic head element together with the slider closer to the medium.

〔Example〕

Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings. Although FIG. 5 is a side view of a conventional magnetic disk drive having a spring arm 18, the present invention has the same overall external configuration.
The overall configuration will be briefly explained using this drawing. The apparatus shown in FIG. 1 is capable of accessing four magnetic disks 24. A spring arm 18 is fixed to the tip of a support arm 10 made of a highly rigid member that is rotatable about a pivot 12. A slider 14 is attached to the tip of the spring arm 18, and a magnetic head element (not shown) is attached to the slider 14.

Slider 1 with magnetic head element supported in this way
4 are arranged facing each other on the upper and lower surfaces of each magnetic disk 24.

Hereinafter, the structure of the spring arm 18 according to the present invention will be explained using FIGS. 1 to 4. The spring arm 18 that elastically supports the slider 14 is made of a sheet metal having a spring property and has a substantially isosceles triangular shape in plan view, and in the present invention, one edge thereof is inclined as shown clearly in FIG. A band-shaped plate (consisting of portions 18a and 18b) is provided. FIG. 4 is a plan view of the spring arm 18 in the form of a sheet metal.
The part 18a shown in the figure is folded upward, and the part 18b is indicated by the broken line 18.
It is cut along the line shown by d and bent downward. By forming the band-shaped plate in this manner, both the air A1 flowing above the main surface of the spring arm 18 and the air A2 flowing below can be stopped and allowed to flow along the band-shaped plate. This strip plate 18a.

The inclination angle of the spring arm 18b is such that the direction in which the flow flows after the receiver is stopped is the direction away from the magnetic disk 24, and the magnitude of the inclination angle depends on the usage conditions of the magnetic disk device and the spring arm 18 This is a design value determined by the spring stiffness, etc.

The springiness of this spring arm 18 is determined by the support arm 10 (
5) The root portion 18C attached to (6) has.

In this way, the springiness of the spring arm 18 is
8C has a structure in which the function of the spring arm 18 is to serve as a receiver, so if the center portion of the spring arm 18 has rigidity, the spring characteristics of the spring arm 18 will be more constant. The above-mentioned strip plates 18a and 18b also contribute to its rigidity.

1 shows the case where the slider 14 is located above the magnetic disk 24, and FIG. 2 shows the case where the slider 14 is located below the magnetic disk 24.
is shown, but the essential structure and operation are the same.

In the above embodiment, the strip plate has a portion 18a above the main surface (a certain surface of an isosceles triangle) of the spring arm 18.
Although a portion 18b is formed at the bottom, any one of these portions is within the scope of the present invention. Furthermore,
Instead of providing the strip plate on the side edge of the spring arm 18,
For example, it may be formed by making a notch in the longitudinal direction of the central portion and bending it downward or upward.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the slider attached to the tip can be brought close to the magnetic recording medium by receiving a reaction force from the air that corresponds to the rotational speed of the magnetic recording medium. That is, when the medium is at rest, the slider is separated from the medium surface unlike in the conventional art, and while the medium is rotating, the slider and its magnetic head element can be brought appropriately close to the medium surface depending on the design of the spring arm. As a result, rubbing between the medium and the slider can be avoided, and stable floating of the slider can be achieved.

[Brief explanation of drawings]

FIG. 1 is a perspective view of one embodiment of the spring arm structure according to the present invention, FIG. 2 is a perspective view of another embodiment of the spring arm structure according to the present invention, and FIG. 3 is a perspective view of the arrow line III in FIG. - Cross-sectional view according to Lit2,
FIG. 4 is a developed view of the spring arm shown in FIG. 1, and FIG. 5 is a side view of the magnetic disk device, which includes a conventional type spring arm. (7) (8) 14...Slider, 18a, 18b...Strip plate, 18...Spring arm, 24...Magnetic disk.

Claims (1)

[Claims] 1. A spring arm (1) that elastically supports the slider (14) floating opposite to the surface of the magnetic recording medium (24).
In the structure of 8), the slider is installed at a position where the slider floats above the surface of the medium when the medium is stationary, and is provided along the longitudinal direction of the slider and rotates with respect to the rotation of the medium (24). A spring arm for elastic support of a slider in a magnetic disk device, characterized in that a strip plate (18a, 18b) is provided with an inclination to receive the accompanying air and to cause the air to flow in a direction away from the surface of the medium. structure.