JPH03127318A - Floating magnetic head - Google Patents

Abstract

PURPOSE:To make a disk device thin and miniature by forming core supporting parts, which are formed on sliders, only on the rear side of rails where magnetic cores are arranged and combining two magnetic head constituting bodies so that a step part other than one core supporting part and the other core supporting part face each other. CONSTITUTION:Magnetic head constituting bodies 4 having sliders 10 to which magnetic cores 6 are fixed and gimbals assembled bodies 2 are arranged back to back so that respective sliders 10 are turned outward, thereby constituting a magnetic head unit 5. The magnetic head unit 5 is arranged between two magnetic disks 7a and 7b arranged apart from each other. Core supporting parts 12 which are formed on the side of rails 11, where magnetic cores 6 are arranged, and fix the magnetic cores only on the rear side of rails 11 are formed on both sliders 10, and the core supporting part 12 of one magnetic head constituting body 4 and a step part 13 other than the core supporting part 12 of the other magnetic head constituting body 4 are arranged to face each other. Thus, a disk drive device including a magnetic head is made thin.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floating magnetic head used in, for example, a hard disk drive device, and in particular relates to a floating magnetic head used in a hard disk drive device, particularly a low profile (
This invention relates to a slider shape for a floating magnetic head that can be made thinner.

[Conventional technology]

For example, with the advent of compact and easily portable personal computers called laptops equipped with hard disk drives and the like, there has been a demand for magnetic disk drive devices that are compact, easy to carry, and capable of high-density recording.

For this reason, there has been a strong demand for magnetic heads used in hard disk drive devices to be light, thin, short, and small, and capable of supporting high-density recording.

In order to increase the recording capacity of the drive device, both sides of the magnetic disk are used or a plurality of magnetic disks are used.

In FIGS. 3 and 4, multiple magnetic disks are used,
An example of the structure of a magnetic head that utilizes both sides of a magnetic disk is shown.

In this example, a magnetic head structure includes a slider 1, a gimbal assembly 2 that holds the slider 1 at its tip, and a lead wire 3 extending from the slider 1 and fixed to the gimbal assembly 2. A set of magnetic head units 5 is constructed by placing two magnetic head units 4 facing each other back to back. The magnetic head unit 5 is arranged between two magnetic disks 7a and 7b which are spaced apart from each other. The upper and lower sliders 1.1 are opposed to the lower surface of the upper magnetic disk 7a and the upper surface of the lower magnetic disk 7b, respectively, and are adapted to read or write information to or from the magnetic disks 7a and 7b.

Although not shown, another magnetic head structure is provided on the upper surface of the upper magnetic disk 7a so as to face the magnetic disk 7a, and also on the lower surface of the lower magnetic disk 7b. A magnetic head structure is provided as necessary to face the magnetic disk 7b.

Then, when the magnetic disks 7a, 7b start rotating, the magnetic head unit 5 rotates the magnetic disks 7a, 7b.
Magnetic recording or reproduction is performed by flying low to the surface at predetermined intervals.

[Problem to be solved by the invention]

However, in a conventional floating magnetic head in which two magnetic head components are placed back to back, the magnetic disk 7a is
, 7b was restricted. In particular, the two upper and lower sliders 1.1 attached to the gimbal assembly 2 have a magnetic core 6 for performing magnetic recording or reproduction, and as shown in FIG. It was formed thickly to maintain the mounting strength. Furthermore, the slider 1.1 had a considerable thickness due to being assembled in layers.

This has been one of the reasons why it has not been possible to meet the increasing demands for thinner and smaller disk drive devices including magnetic heads.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a floating magnetic head that can reduce the thickness of a disk drive device including the magnetic head by improving the slider shape of the magnetic head and using it in combination. With the goal.

[Means to solve the problem]

In the floating magnetic head of the present invention, two magnetic head components each having a slider having a fixed magnetic core and a gimbal assembly that holds the slider are arranged back to back to each other so that each slider faces outward. The magnetic head unit is arranged between two magnetic disks spaced apart from each other. Further, both sliders of the magnetic head assembly are formed with a core support part for fixing the magnetic core only on the rail side where the magnetic core is arranged and on the back side of the rail, and the core support part of one of the magnetic head assembly is formed. and a step portion other than the core support portion of the other magnetic head structure are arranged to face each other.

[Effect]

The two magnetic head structures each having a slider have a core support portion and a stepped portion formed in a portion other than the core support portion on the back surface of the slider that is opposite to the surface facing the magnetic disk. By arranging the core support portion of one magnetic head structure and the stepped portion of the other magnetic head structure to face each other, the thickness of the magnetic head unit can be reduced.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 and 2. Note that the same parts and portions as in the conventional example are given the same reference numerals and detailed explanations are omitted.

In the floating magnetic head of the present invention, the slider 10.10 of the magnetic head components 4, 4 is arranged so that the core support portion and the step portion, which will be described later, are opposed to each other, thereby making it possible to reduce the thickness of the magnetic head. is expressed as a percentage.

The two magnetic head structures 4, 4 are placed back to back to each other as shown in 1m, and include a slider 10.10 and a gimbal assembly 2 to which the slider 10.10 is attached.
, 2, and constitute one magnetic head unit 5. The slider to, i is movable in the vertical direction.
o is fixedly attached to the gimbal assemblies 2, 2.

Further, in the vertical direction of the slider, a magnetic disk 7a,
7b are spaced apart from each other and a magnetic core 6.6 fixed to the slider 10.10 is the magnetic disk 7a.

7b.

FIG. 2 shows an enlarged view of the slider 10.10 portion. A pair of rails 11.11 are formed on the surface of the slider IO facing the magnetic disk (not shown), and at one end of each rail 11.11 is an air inflow portion 11a that generates a floating blade.

11a is formed. At the end of either rail, there is a notch 6 that penetrates in the thickness direction of the slider lO.
A is formed in the notch 6a, and a magnetic core 6 for writing and reading from the magnetic disk is inserted into this notch 6a. A core support portion 12 having a central portion cut out is provided on the back side of the rail 11.11 to protrude from the slider 1O, and holds the magnetic core 6.

Furthermore, the surface of the slider 108 forms a stepped portion 13 excluding the protruding core support portion 12.
3 is formed parallel to the surface of the rail 11 and as thin as possible.

The step portion 13 of the slider 100 configured in this manner
The gimbal assembly 2 is attached to the magnetic head structure 4, and the core support portion 12 of one magnetic head structure 4 and the stepped portion 13 of the other magnetic head structure 40 are combined so as to be disposed opposite to each other.

Note that the gimbal assembly 2 holds the slider 10,
A gimbal (
spring). The slider 10 of the magnetic head unit 5 combined in this way floats low above the disk surface by the rotational drive of the magnetic disks 7a and 7b.

At this time, the elastic gimbal assembly 2 moves freely in the vertical direction, and the magnetic core 6 accurately performs magnetic recording or reproduction on the magnetic disk.

As described above, according to the present invention, the magnetic head unit 5 is formed to be thin, and the distance between the magnetic disks 7a and 7b is narrowed, thereby making the entire magnetic disk device to which the magnetic head is attached thinner. becomes possible. When a magnetic disk device requires a high capacity, a large number of magnetic disks are used and the magnetic head units 5 are stacked in multiple stages. However, with the above configuration, the space between the magnetic disks can be narrowed, and the effect of making the magnetic head unit thinner becomes even more noticeable.

Furthermore, if the stepped portion 13 excluding the core support portion 12 is further made thinner, the space between the magnetic disks 7a and 7b can be further narrowed, and the thickness can be reduced, while at the same time the magnetic core 6 is held between the core support portions 12 from both sides. Therefore, the magnetic core 6 is connected to the slider 10
This has the effect of being more securely fixed.

〔Effect of the invention〕

As described above, according to the floating magnetic head according to the present invention, the core support portion for fixing the magnetic core formed on the slider is formed only on the side of the rail where the magnetic core is arranged and on the back side of the rail. By configuring two magnetic head structures in such a way that the step portion other than the core support portion and the core support portion are arranged opposite to each other, the magnetic head unit can be made thin, and therefore the magnetic disk This makes it possible to reduce the space between magnetic heads and make the entire disk device with a magnetic head attached thinner.

In magnetic disk devices that require high capacity,
Even if a large number of magnetic disks are used, since the magnetic head can be made thinner, there is a remarkable effect that the disk device can be made thinner and smaller.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a state in which a floating magnetic head is arranged between magnetic disks in one embodiment of the present invention, FIG. 2 is an enlarged perspective view of the main part of the slider of the magnetic head, and FIG. 3 is a conventional FIG. 4 is a perspective view showing a floating magnetic head disposed between magnetic disks, and FIG. 4 is an enlarged perspective view of a main part of the slider shown in FIG. 3. 2... Gimbal assembly, 4... Magnetic head structure,
5... Magnetic head unit, 6... Magnetic core, 1o
...Slider, 11...Rail, 12...Core support part, 13...Step part 1 Figure 4 Figure 4

Claims (1)

[Claims] A magnetic head unit is constructed by arranging two magnetic head structures each having a slider having a fixed magnetic core and a gimbal assembly that holds the slider back to back with each other so that each slider faces outward. In a floating magnetic head in which the magnetic head unit is arranged between two magnetic disks arranged apart from each other, both sliders are provided on the rail side on which the magnetic core is arranged and on the rail surface. A core support part for fixing the magnetic core is formed only on the back side, and the core support part of one magnetic head structure and the step part other than the core support part of the other magnetic head structure are arranged to face each other. A floating magnetic head characterized by: