JP2735472B2 - Magnetic head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head, and more particularly to a structure of a coil of a magnetic head used in a flexible disk drive.

[0002]

2. Description of the Related Art Conventionally, in a magnetic head of this type, as shown in FIG. 4, a core assembly 32 for forming a magnetic circuit comprises two sliders 31a and sliders 3 made of ceramic.
1b, the data is written and read by sliding on a magnetic recording medium (not shown) together with the sliders 31a and 31b.

In the magnetic head thus configured, the sliders 31a, 31b and the core assembly 31 are bonded to each other using an adhesive or glass, and then the sliders 50a, 50
b and the core assembly 51 are polished to form predetermined sliding surfaces 33a and 33b. As another assembling method, there is a method in which two sliders and a core assembly are integrally formed by an injection molding method (for example, see Japanese Patent Application Laid-Open No. 61-1986).
No. 284821).

[0004]

The above-described conventional magnetic head requires two sliders to be supported by the core assembly, and has a structure in which these sliders and the core assembly are bonded and assembled. Therefore, there is a problem that the number of assembling steps is increased . Result of this, complicate the assembly of the production and the magnetic head slider, and there is a disadvantage that production cost is increased.

In the method of integrally molding a core assembly and a slider by an injection molding method, a soft material must be selected as a resin material to be molded because the core assembly is inserted into a mold and molded. However, there is a drawback that the wear resistance during sliding is inferior to that of ceramic.

[0006]

SUMMARY OF THE INVENTION The present invention provides a slider made of a non-magnetic member and having a sliding surface which comes into contact with and slides on a magnetic recording medium, and the magnetic recording medium on the same surface as the sliding surface of the slider. A magnetic head comprising a core assembly having a gap portion for writing / reading information to / from a medium, comprising: a core supporter for fixing both ends of the core assembly; and being integrated with the sliding surface of the slider. It is characterized by being molded. It may also include a wall portion for contact with one side of the core assembly in the vicinity of the core support base before Symbol slider.

[0007]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing one embodiment of the first invention. As shown in FIG. 1, a magnetic head according to a first aspect of the invention has a core assembly 2 formed by bonding a plurality of plate-shaped cores made of a magnetic material and forming a gap at one end of the core. And a slider 1 having a core support 4 for supporting the core assembly 2. The slider 1 has a core support 4 and a sliding surface 3 with a magnetic recording medium (not shown), which are integrally formed of the same magnetic material (ferrite) as the core assembly 2.

[0008] Assembly of the magnetic head of the present embodiment, after placing the core assembly 2 to the core support 4 of the slider 1, we end up with only a adhering cured.

FIG. 2 is an exploded perspective view showing an embodiment of the second invention. In the magnetic head according to the second aspect of the present invention, as shown in FIG. 2, the slider 11 is made of ceramic, a core support 14 for fixing and positioning the core assembly 12, and two sliding surfaces 13a and 13b. And In the magnetic head of this embodiment, the slider 11 is formed using a forming die. Then, in assembling the magnetic head, the core assembly 12 is pressed against the end 15 of the wall portion 16 on the side of the sliding surface 13b provided in the vicinity of the core support base 14, positioned, and then cured by adhesion. Thereby, the core assembly 1
2 positioning accuracy is improved. Further, when the wall portion 16 and the core assembly 12 are bonded, the bonding layer can be made uniform and thin, so that the bonding strength is improved.

FIG. 3 is a perspective view of a slider showing one embodiment of the third invention. FIG. 3 shows a magnetic head according to a third invention.
As shown in FIG. 2, a core assembly (not shown) is attached to the slider 21.
And a wall portion 26 provided near the core support base 24 for fixing and positioning of the core assembly, and an end portion 25 thereof. The end portion 25 is used for positioning of the core assembly. The magnetic head of the present embodiment, after positioning the positioning of the core assembly by pressing from the outside on the end 25, is bonded curing. Thereby, assembling of the magnetic head is further facilitated. Also in this case, similarly to the case of the second invention, the adhesive layer between the wall portion 26 and the core assembly can be uniformly thinned.

Even if the wall 26 does not have a height up to the sliding surfaces 23a and 23b, there is no hindrance to the installation of the core assembly.

[0012]

As described above, in the magnetic head of the present invention, the slider can be integrally formed.
The number of components can be reduced and assembly can be simplified. Further, since the same material as that of a normal ceramic material can be used, the deterioration of the wear resistance is small . Also, by the core support base for fixing the core assembly to the slider and provided wall portion for positioning, for assembling the magnetic head is facilitated, there is an effect that manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the first invention.

FIG. 2 is an exploded perspective view showing an embodiment of the second invention.

FIG. 3 is a perspective view of a slider showing one embodiment of the third invention.

FIG. 4 is an exploded perspective view showing a conventional example.

[Explanation of symbols]

1, 11, 21, 31a, 31b Slider 2, 12, 32 Core assembly 3, 13a, 13b, 23a, 23b, 33a, 33b
Sliding surface 4,14,24 Core support 15,25 End 16,26 Wall

Claims (2)

(57) [Claims] 1. A slider made of a non-magnetic member and having a sliding surface that comes into contact with and slides on a magnetic recording medium, and writes and reads information on and from the magnetic recording medium on the same surface as the sliding surface of the slider. A magnetic head comprising a core assembly having a gap portion, wherein the magnetic head comprises a core supporter for fixing both ends of the core assembly, and is integrally formed with the sliding surface of the slider. head. 2. The magnetic head according to claim 1, further comprising: a wall portion in contact with one of the side surfaces of the core assembly near the core support of the slider.