JPH0363917A - Magnetic head - Google Patents

Abstract

PURPOSE:To reduce the cost of a completed product by forming each slider in the shape of an inverted T character and mounting an engaging board member to one tip part out of these sliders. CONSTITUTION:One and the other sliders 1 and 53 composed of a non-magnetic substance are adhered and mounted on both side surfaces so as to crimp a magnetic core 51, which is formed in the shape of an E character, with fixed thickness. Then, coils 54 and 55 are provided to be mounted to rise parts 51A and 51C in the both right and left end parts of the magnetic core 51. A base part 1A of one slider 1 is formed in the shape of the inverted T character and in the tip part of a rise part 1B provided in the central part, an engaging board member 1C composed of the non-magnetic substance is fixed and mounted almost parallelly to a floppy disk side facing surface to which the slider 1 is faced. Namely, sintering work, which is conventionally required, between a metallic mold and a material is not needed and the respective siders can be produced by the same production process. Thus, considerable cost reduction is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head, and particularly to a magnetic head used in a floppy disk drive.

[Conventional technology]

Conventionally, this type of magnetic head has a magnetic core 51 formed in an E-shape as shown in FIG. It includes a slider 52, 53 made of a magnetic material, and coils 54, 55 attached to rising portions 51A, 51C at both left and right ends of the E-shaped magnetic core 51 when viewed from the direction a in FIG.

In FIG. 4, arrow A indicates the radial direction of the floppy disk. The lower surface of the slider 52, 53 in FIG. 4 is facing the floppy disk.

The slider 52 is formed in an L-shape when viewed from the direction of the arrow in FIG. 4, and its upper end surface serves as an adhesive surface 52A for an engagement spring (not shown) such as a gimbal spring. A rising portion 52B is provided at the center of the slider 52 when viewed from the direction of arrow a in FIG. This rising portion 52B is E
It is provided corresponding to the central rising portion 51B of the letter-shaped magnetic core 51, so that when the magnetic core 51 and the slider 52 are bonded together, the adhesive strength thereof is strengthened. Reference numeral 52C indicates the adhesive surface with the magnetic core 51.

Further, the slider 53 is formed in an inverted T-shape when viewed from the direction of arrow a in FIG. 51B, and thereby strengthens the adhesive force when the magnetic core 51 and slider 53 are bonded together.

[Problem to be solved by the invention]

However, in the conventional example described above, one slider 53 constituting the magnetic head has a complicated shape, which causes the inconvenience that this slider 53 cannot be formed by cutting.

For this reason, in the conventional example, a method has been adopted in which slider material powder (mostly powdered ceramic) is manufactured by sintering using a mold.

Such conventional technology has disadvantages in that it takes time and effort to manufacture the slider, increases the number of man-hours in manufacturing, resulting in higher costs, and requires more investment in equipment since it is not processed in the same process as other parts. was there.

[Purpose of the invention]

The present invention improves the disadvantages of the conventional example, particularly simplifies one slider with a complicated shape, and
It is an object of the present invention to provide a magnetic head that can be manufactured by the same machining process as the other slider, thereby suppressing capital investment and reducing the cost of the finished product.

[Means to solve the problem]

The present invention includes a magnetic core formed in an E-shape with a constant thickness, a coil installed on protrusions in the same direction at both ends of the magnetic core, and an adhesive installed on both sides of the magnetic core in the thickness direction. In a magnetic head having one slider and the other slider, each of the one slider and the other slider is formed in an inverted T-shape, and at the tip of a protrusion formed in the center of one of the sliders, A structure is adopted in which a retaining plate member is mounted substantially parallel to the floppy disk side facing surface that the one slider faces. This aims to achieve the above-mentioned purpose.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Here, the same reference numerals are used for the same components as in the conventional example shown in FIG.

The embodiment shown in FIG. 1 has a magnetic core 51 formed in an E-shape and having a constant thickness, and adhesive devices on both sides to sandwich the magnetic core 51, as in the conventional example described above. One and the other sliders made of non-magnetic material 1.53
and coils 54 and 55 that are attached to rising portions 51A and 51C at both left and right ends of the magnetic core 5I when viewed from the direction a in FIG.

The lower surface of the slider 1.53 in FIG. 1 is the surface facing the floppy disk.

Detailed views of one slider 1 are shown in FIGS. 2 and 3.

As shown in FIGS. 1 to 3, one slider l has a base portion I when viewed from the direction of arrow a in FIG.
A has an inverted T-shape, and a raised part IB provided at the center of the base part IA has a raised part IB made of non-magnetic material almost parallel to the opposing surface facing the slider 1. A retaining plate member IC is fixedly attached.

The entire magnetic head is connected to an engaging spring such as a gimbal spring via the engaging plate member IC of the slider 1.
(not shown).

Here, surfaces 2 and 3 shown in FIG. 2 indicate side surfaces set in a direction parallel to the radial direction of the floppy disk that is a recording medium and perpendicular to the floppy disk. The whole of one slider may be formed into the engineering shape shown in FIG. 3 by cutting during machining.

Reference numeral IE indicates an adhesive surface for gimbal springs and the like.

Further, the symbol IF indicates a groove formed on the opposing surface of the slider 1 on the floppy disk side.

The other configurations are the same as the conventional example described above.

In this way, in this embodiment, each slider has 1.53
is formed into an inverted T-shape, thereby ensuring adhesive strength with the magnetic core 51, and at the same time attaching the attachment plate member IC to one of the sliders. Furthermore, not only the other slider 53 but also one slider 1 can be easily processed by machining, which eliminates the need for expensive molds or different manufacturing methods. This method has the advantage that it eliminates the need for a process and at the same time reduces the number of processing steps, resulting in a significant cost reduction.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to form each slider that holds the magnetic core by simple machining, which eliminates the need for molds and sintering of materials that were conventionally required. Less man-hours,
It is possible to manufacture each slider through the same production process, and therefore, it is possible to provide an unprecedentedly excellent magnetic head in which the overall cost can be significantly reduced.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention, FIG. 2 is an explanatory view showing one slider portion of FIG. 1, FIG. 3 is a front view seen from the direction of arrow a in FIG. FIG. 4 is an exploded perspective view showing a conventional example. 1.53...Slider, IB...Protrusion at the center of the slider, IC...Mounting plate member, 5
1... Magnetic core, 54.55... Coil. Figure 1 Figure 2 wJ 7 (Yaomi direction) Figure 3 Figure 4

Claims (1)

[Claims] (1) A magnetic core with a constant thickness formed in an E-shape,
In this magnetic head, the magnetic head has coils installed on protrusions in the same direction at both ends of the magnetic core, and sliders on one side and the other side that are adhesively installed on both sides of the magnetic core in the thickness direction. Each slider is formed into an inverted T-shape, and the tip of the protrusion formed in the center of one of the sliders is engaged approximately parallel to the facing surface of the floppy disk that the slider faces. A magnetic head characterized by being equipped with a plate member.