JPS63103406A - Magnetic head assembling body - Google Patents

Abstract

PURPOSE:To realize stable low floating, by forming the width of an air bearing plane of respective floating rail in narrow width, evading a part in the neighborhood of a position where a thin film magnetic transducer is installed. CONSTITUTION:Respective floating rail 22 or 23 is cut in a inclined shape, and is narrowed so that, for example, its out side plane except the neighborhood of an air outflow end where the thin film magnetic transducers 28 and 29 are installed, is separated gradually from the air bearing planes 24 and 25 in a direction from the air outflow end to an inflow end, and respective air bearing plane 24 or 25 at the part except the neighborhood of the part where the thin film magnetic transducers 28 and 29 are installed, is formed in narrow width. The narrow width process of respective floating rail 22 or 23 can be easily formed by mechanical grinding process at the time of forming respective floating rail 22 or 23 at a slider 21. In such way, no step part cut steeply in a traveling direction of a medium is formed, and the disturbance of air flow due to the step part, or the accumulation of dust can be prevented, thereby, stable low floating can be obtained.

Description

[Detailed Description of the Invention] [Summary] The present invention relates to a magnetic head assembly used in a magnetic disk drive, in which a levitation rail having an air bearing surface serving as a levitation force generating surface is provided with a thin film magnetic transducer. The width of the air bearing surface of the floating rail is adjusted to the area near where the thin film magnetic transducer is attached by cutting the side surface or both side surfaces in an inclined manner so as to gradually move away from the air bearing surface from the air outflow end to the inflow end. It has a narrow width, allowing for stable and extremely low levitation.

[Industrial application field]

The present invention relates to a magnetic head assembly used in a magnetic disk drive, and more particularly to a flying magnetic head assembly that facilitates lower flying height during magnetic recording and reproduction of high-density recording media.

In recent years, in magnetic disk drives, the flying distance between a magnetic recording medium and a magnetic transducer of a magnetic head assembly during recording and reproduction tends to become smaller and smaller as magnetic recording density increases.

For this reason, there is a need for a magneto-sodium assembly that can easily and stably achieve a flying height of submicron or less.

[Conventional technology]

In the conventional magnetic head assembly, as shown in the perspective view of FIG. 3 (the medium facing surface is shown facing upward to make the configuration easier to understand), from the air inflow end side of the medium facing surface of the slider l, A pair of floating rails 2, each having inclined surfaces 6, 7 for air inflow at the air inflow ends on both sides thereof toward the outflow side, and air bearing surfaces 4.5 serving as levitation force generating surfaces. 3, each floating rail 2, 3
A thin film magnetic transducer 8.9 is installed on the end face of the air outflow end of the
It consists of a configuration with

Such a tapered flat magnetic head assembly is
To adjust the spring pressure of a support spring (not shown) that supports the floating blade and the assembly, which is generated on the air hair ring surface 4°5 of each floating rail 2.3 facing the magnetic recording medium during recording and reproduction. The required flying height is obtained by

[Problem that the invention seeks to solve]

By the way, as described above, the magnetic head assembly is configured to float to a required flying height by balancing the floating blades generated on the air bearing surface 4.5 of the floating rail 2.3 with the spring pressure of the support spring that supports the assembly. To lower the levitation of a solid, −j
This is achieved by narrowing the width of the air hair ring surface 4.5 of the levitation rail 2.3 to reduce the levitation force itself generated.

However, as shown in the partially enlarged plan view of FIG. 4, there is a limit to making the width W of the air bearing surfaces 4, 5 narrower. That is, the width W of the air bearing surface 4.5, in other words, the width of each floating rail 2.3, is limited by the width of the thin film magnetic transducers 8, 9 provided on the end face of the air outflow end. , it is inconvenient that it cannot be made narrower than that, and as a result, there is a problem that it is difficult to achieve an extremely low flying height of submicron or less.

In view of the above-mentioned conventional problems, the present invention is a novel technology that enables stable low levitation by narrowing the width of the air bearing surface of each levitation rail, avoiding the vicinity of the thin-film magnetic transducer. It is an object of the present invention to provide a magnetic head assembly that has a unique structure.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention has one side surface of a floating rail having an air bearing surface provided on a slider, excluding the vicinity of the air outflow end where a thin film magnetic transducer is attached. Alternatively, both side surfaces are cut off in an inclined manner so as to gradually move away from the air bearing surface from the air outflow end to the inflow end, except for the vicinity of the air outflow end where the thin film magnetic transducer of the floating rail is attached. The air bearing surface has a narrow width.

(Function) In the magnetic head assembly of the present invention, the width of the air bearing surface excluding the vicinity of the air outflow end of the floating rail to which the thin film magnetic transducer is attached is such that the width of the air bearing surface excluding the vicinity of the air outflow end (one side or By cutting both side surfaces in an inclined manner so as to gradually move away from the air bearing surface from the air outflow end to the inflow end, the air bearing can be removed without narrowing the width of the thin film magnetic transducer attached portion. The surface can be easily made narrow, and a stable low flying height can be achieved.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view showing one embodiment of a magnetic head assembly according to the present invention, with the medium facing surface facing upward in order to make the structure of the assembly easier to understand.

In the figure, 21 is 81203, or Aβ20.・T
A slider 22.23 made of iC or the like is a pair of levitation rails having an air bearing surface 24.25 which is a levitation force generating surface with an inclined surface 26.27 for air inflow at the air inflow end; A thin film magnetic transducer 28, 29 is attached to the end face.

Further, each of the floating rails 22, 23, except for the vicinity of the air outlet end to which the thin film magnetic transducer 28, 29 is attached, for example, the outer surface of the floating rail 22, 23, is gradually shaped from the air bearing end toward the inlet end. The air bearing surfaces 24.25 are tapered and narrowed away from the surfaces 24.degree. 25 so that each air bearing surface 24.25 has a narrow width except in the vicinity of the attached portion of the thin film magnetic transducer 28.29.

The narrow width of each floating rail 22.23 can be easily formed by mechanical grinding when forming each floating rail 22.23 using the slider 21.

In the magnetic head assembly in which the air bearing surface 24.25 of each floating rail 22.23 has a narrow width as described above, there is no step part that is perpendicular to the medium running direction. There is no turbulence in the airflow or accumulation of dust, and stable low levitation is possible.

FIG. 2 is a perspective view showing another embodiment of the magnetic head assembly according to the present invention, and the same parts as in FIG. 1 are given the same reference numerals.

The difference between the embodiment shown in FIG. 2 and that shown in FIG. 1 is that the air bearing surfaces 34, 35 of each floating rail 32, 33 in the slider 31 are convex curved surfaces having a required radius of curvature with respect to the media traveling direction. , is a so-called crown type magnetic head assembly, and the air bearing surface 34.35 of each floating rail 32.33 of this magnetic head assembly is connected to a thin film magnetic transducer 28.29 as in the embodiment shown in FIG.
The width is narrow except for the area near the attached part.

This embodiment structure also facilitates lowering the flying height.

〔Effect of the invention〕

As is clear from the above description, according to the magnetic head assembly according to the present invention, the width of the air bearing surface, which is the levitation force generating surface, can be increased without narrowing the width of the levitation rail in the vicinity of the thin-film magnetic transducer. can be easily made narrow. In addition, the narrow width of the floating rail can be easily formed by mechanical grinding, and since there is no step part perpendicular to the media running direction, air flow turbulence caused by the step, etc. It has the excellent advantage of not allowing dust to accumulate in this area and allows for a stable low flying height of submicron or less. It's advantageous.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the magnetic head assembly according to the present invention, FIG. 2 is a perspective view showing another embodiment of the magnetic head assembly according to the present invention, and FIG. 3 is a perspective view showing a conventional magnetic head assembly. FIG. 4 is a perspective view for explaining the head assembly. FIG. 4 is an enlarged plan view showing a portion near where a thin film magnetic transducer is attached in a conventional magnetic head assembly. In FIG. 1, 21, 31 are sliders, 22, 23, 32.33 are floating rails, 24, 25, 34, 35 are air bearing surfaces, and 28.29 are thin film magnetic transducers, respectively. Figure 1 of Fudo Hd 1, 173 Kyohi, Jttt1 Ming 73, slanted entrance, Figure 3

Claims (1)

[Claims] Air bearing surfaces (24, 25) facing the magnetic recording medium
) at least two floating rails (22, 23) with
In the configuration of a magnetic head assembly comprising a thin film magnetic transducer (28, 29) attached to the air outflow end surface of at least one floating rail (22, 23) in a slider (21) equipped with the thin film magnetic transducer ( At least one side of the floating rails (22, 23) equipped with air bearings (28, 29), excluding the vicinity of the air outflow end, gradually moves away from the air bearing surface (24, 25) from the air outflow end toward the inflow end. The floating rails (22, 23
) The width of the air bearing surfaces (24, 25) of the magnetic head assembly (24, 25) is narrow except in the vicinity of the air outflow ends where the thin film magnetic transducers (28, 29) are attached.