JP2530084Y2 - Magnetic head for magneto-optical recording - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to a magnetic head for magnetic field modulation used in a magnetic field modulation recording system of a magneto-optical recording device.

<Conventional Technology> As shown in FIG. 4, a supporting structure of a magnetic head for magnetic field modulation used in a magnetic field modulation recording system of a magneto-optical recording device is a floating magnetic head used in a general magnetic disk device. Similar to the head, a slider 5 incorporating a magnetic core is attached to a flexure 4 attached to a load beam 2.
It is common to take the structure formed by joining with.

<Problems to be Solved by the Invention> When using the support structure of the magnetic head 200 using the above-mentioned conventional technology, a slider slides from a load beam tip of a floating magnetic head used in a general magnetic disk device. While the distance to the surface (hereinafter referred to as the slider mounting height) is currently about 1 mm, the slider mounting height of the magnetic head 200 for magnetic field modulation used in a magneto-optical recording device uses a cartridge disk. 2.5m for
m or more. If the thickness of the slider 5 is simply increased in order to obtain the slider mounting height, the shape of the slider 5 is significantly thicker than that of the conventional floating magnetic head. The position of the center of gravity of the slider was raised without changing the position, and as a result, the balance of the slider was deteriorated at the time of head access, and the slider was greatly inclined in the head access direction, and there was a risk of causing head crash. For this reason, high-speed access was practically impossible. Also, if the slider is made thicker and the other dimensions are made larger, the point of action of buoyancy moves away from the position of the center of gravity, so that the floating stability is increased and the risk of head crash is reduced. However, since the weight of the slider increases in proportion to the cube of the external dimensions, the magnetic head becomes heavy, and high-speed access becomes impossible.

The purpose of the present invention is to solve the above-mentioned problems, to set the slider mounting height at an arbitrary height, and to set the static attitude of the slider (the attitude of the slider with respect to the mount assuming the head loading state) horizontally and stably. An object of the present invention is to provide a magnetic head to be held and a magnetic head which is small and lightweight and enables high-speed access.

<Means for solving the problems> In order to achieve the above object, in the present invention, an adapter is attached to the load beam tip, a flexure is attached to the adapter, and a slider is attached to the flexure, The flexure is joined to the back surface of the slider, and the adapter is located on the back surface of the slider, thereby providing a magnetic head for magneto-optical recording. In addition, the flat portion of the adapter where the flexure is mounted is inclined at an arbitrary angle in the radial direction of the magneto-optical disc, or the flat portion where the flexure of the adapter is mounted and the tongue of the flexure are attached to the rotating direction of the magneto-optical disc. The magnetic head for magneto-optical recording was characterized in that each of the magnetic heads had an arbitrary inclination.

<Operation> By installing a lightweight and rigid adapter of arbitrary height at the tip of the load beam that is a component of the magnetic head, the slider mounting height can be increased without raising the center of gravity and increasing the weight. It can be set arbitrarily.

Also, given any inclination theta ₁ in the radial direction of the magneto-optical disk to the flat portion flexure of the adapter is attached, or the tongue portion of the flat portion and the flexure Furekishiya adapter is attached, the rotation of the magneto-optical disk By providing arbitrary inclinations θ ₂ and θ ₃ in the directions, the static attitude of the magnetic head is kept horizontal and the magnetic head can run stably when the head is loaded.

<Embodiment> An embodiment of the present invention will be described below with reference to FIGS. First, the configuration will be described. FIG. 1 shows a magnetic head for performing magnetic field modulation in a magneto-optical recording apparatus using a cartridge disk, and FIG. 2 shows the configuration of the magnetic head shown in FIG. It is created for explanation.

Reference numeral 1 denotes a mount made of stainless steel or the like having a mounting hole 1a for combination with the main body of the magneto-optical recording apparatus. A load beam 2 made of stainless steel or the like is joined to the mount 1 by laser welding. . At the tip of the load beam 2 opposite to the weld of the mount 1,
Adapter 3 made of stainless steel and bent
However, by laser welding, the tip 2a of the load beam 2 and
The back surface of the portion 2b is joined to the load beam joining portions 3a and 3d of the adapter 3. Further, a flexure 4 made of stainless steel or the like is joined to the adapter 3 at the rear surface of the flat portion 3b at the Ω-shaped top of the adapter 3 and an adapter joint 4a of the flexure 4 by laser welding. The flexure 4 includes a slider 5 having a magnetic core incorporated therein, and a back surface of the tongue piece 4 b of the flexure 4 and the slider 5.
And a flexure joining portion 5a on the back surface 6 of the rear panel 6 with resin or the like.

The adapter 3 is located on the back surface 6 side of the slider 5. Therefore, the mounting height of the slider 5 can be arbitrarily set by the adapter 3 having an arbitrary height H.

Since the present invention relates to the structure for supporting the magnetic head, the magnetic core, the coil, the wiring of the lead wires for forming the electric circuit, etc. are omitted, and the mount 1, load beam 2, adapter 3 Also, the shapes of the flexure 4 and the slider 5 which are not involved in the basic structure are omitted or simplified.

The above-mentioned magnetic head 100 is arbitrarily spaced from the magneto-optical disk 10 by air levitation (currently, generally, several hundred nm to several μm
Degree).

Next, the features of each member constituting the magnetic head 100 will be described. As described in the background art, and as shown in FIG. 4, the magnetic head 200 having the conventional structure includes a mount 1, a load beam 2, a flexure 4, and a slider 5. In the magnetic head 100 described in the embodiment of the present invention, the mount 1, the load beam 2, and the flexure 4 are basically the same, the slider 5 has a reduced thickness, The adapter 3 is newly used in a portion where the thickness is reduced.

FIG. 3 shows a detailed perspective view of the adapter 3, which is bent into an Ω shape.
It has another load beam joint 3d located on the opposite side across the load beam joint 3a and the Ω-shaped top flat part 3b,
The load beam joints 3a and 3d are located on both sides of the bridge 3c. Further, the adapter 3 as shown in FIG. 1 (d), the load beam joints 3a, relative to 3d, have any angle Ω-shaped flat top portion 3b is theta _1, FIG. 1 (e) as shown in, the load beam joints 3a, relative to 3d, Omega-shaped flat top portion 3b has an arbitrary angle ₂ becomes theta. The Ω-shaped top flat portion 3b has a step as shown in FIG. 3 with respect to the bridge 3c.

The in FIG. 2 (b) shows the shape of Furekishiya 4, tongue portion 4b with respect to the adapter joint 4a having an arbitrary angle theta _3.

<Effects of the Invention> As described above, according to the present invention, the light-weight and rigid adapter 3 having an arbitrary height H is provided at the distal end portion 2a of the load beam 2 so that the slider mounting height can be made arbitrary. And the desired magnetic head 100 can be formed. In addition, adapter 3
Since the thickness dimension of the slider 5 can be reduced by using, the weight of the slider 5 can be reduced, and high-speed access is possible. In addition, the weight of the adapter is sufficiently lighter than the weight of the slider, and the center of gravity can be kept low, so that the flying stability during high-speed access is not impaired.

Furthermore, or in the flat portion 3b Furekishiya 4 adapter 3 is mounted, by attaching any inclination theta ₁ in the longitudinal direction of the load beam, or by attaching any inclination theta ₂ in the longitudinal direction of the Furekishiya, Slope θ
_1, by attaching theta ₂ simultaneously, keeping the static posture of the magnetic head 100 horizontally, there is an advantage that it constitutes a desired magnetic field modulation magnetic head so as to be stable running during Hetsudorodo.

Inclination theta ₁ is equal to the angle theta ₄ bent in Hetsudorodo state of normal load beam, the inclination theta ₂ is equal to the angle theta ₃ open Furekishiya. Bending angle theta ₄ of the load beam is often provided for optimizing the demands and spring of the apparatus. The flexure opening angle θ ₃ is originally set to offset the load beam bending angle θ ₄ in the floating magnetic head for a magnetic disk device, but in the magnetic head for magnetic field modulation of the present invention, This has the effect of reducing defects caused by the protrusion of the resin when the slider is bonded to the flexure, and the flexibility of the floating magnetic head for a magnetic disk device can be used. Here, regarding the defect due to the protrusion of the resin, the gap between the tongue piece and the outer edge is larger in the flexure having a large opening angle than in the flexure having a small opening angle, and the resin that has protruded adheres to the outer edge. Hateful. When the resin adheres to the outer edge and solidifies, the one-point support mechanism of the flexure is impaired, and the floating stability is significantly impaired. In this manner, by providing the adapters with arbitrary inclinations θ ₁ and θ ₂ , the bending angle θ ₄ of the load beam and the opening angle θ _{3 of the} flexure can be independently set to the optimum angles, and the static posture can be set in parallel. It has the effect of keeping it.

[Brief description of the drawings]

1 (a) to 1 (e) are views showing one embodiment of a magnetic head for magneto-optical recording according to the present invention, and FIG.
(B) is a front view thereof, (c) is a side view thereof, (d) is a schematic enlarged front view of the adapter, (e) is a side view schematically showing mounting angles of the adapter and the flexure, FIG. FIG. 2 (a) is an exploded perspective view of the magnetic head of FIG. 1, FIG. 2 (b) is a side view of the flexure, FIG. 3 is a perspective view showing an embodiment of the adapter used in the present invention, FIG. ) ~
(C) is a diagram showing a conventional example, (a) is a plan view thereof,
(B) is the side view, (c) is the side view. 1 ... Mount, 2 ... Load beam, 3 ... Adapter, 3b ... Flat part, 4 ... Flexible, 4b ... Tongue piece,
5 ... Slider, 10 ... Magneto-optical disk, 100 ... Magnetic head.

Claims (3)

(57) [Scope of request for utility model registration] 1. An adapter is attached to a tip end of a load beam, a flexure is attached to the adapter, a slider is attached to the flexure, the flexure is joined to a rear surface of the slider, and the adapter is attached to a rear surface of the slider. A magnetic head for magneto-optical recording, characterized in that the magnetic head is positioned at: 2. A magnetic head for magneto-optical recording according to claim 1, wherein the flat portion of the adapter to which the flexure is attached is arbitrarily inclined in the radial direction of the magneto-optical disk. 3. A flat part to which a flexure of an adapter is attached and a tongue part of the flexure are each provided with an arbitrary inclination in the direction of rotation of the magneto-optical disk. Magnetic head for magneto-optical recording.