JPH03224117A - Magnetic head device - Google Patents

Abstract

PURPOSE:To easily perform the mechanical working and to improve the dimensional precision and the productivity by constituting a slider of first and second slider members whose sections are convex and a third slider member whose section is a relatively wide rectangle. CONSTITUTION:A slider main body 1 consists of first and second slider members 2 and 3 whose sections in the lengthwise direction are convex, a third slider member 4 whose section in the lengthwise direction is a relatively wise rectan gle, and a core member 13 which is interposed between first and second slider members 2 and 3 and is E-shaped so that coils 15 and 14 can be provided. Since one or both side faces in the lengthwise direction of first and second slider members 2 and 3 are adhesive faces, their projecting parts function to widen the area of adhesive faces, and the adhesion to the core member 13 is sufficiently and effectively secured. Thus, the sufficient adhesion is secured to reduce the man-hour of production, and mass production is possible.

Description

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

[Conventional technology].

Conventionally, as shown in FIG. 2, this type of magnetic head has a core member 13 that performs recording and reproduction using an L-shaped first slider piece 11 and a T-shaped second slider piece 12.
The two are sandwiched and fixed together as shown in the figure. Further, a recording/reproducing coil 14 for recording and reproducing and an erasing coil 15 are incorporated in the core member 13, and a surface 17 of the first slider piece 11 opposite to the medium facing surface 16 is provided with:
As shown in FIG. 3, the structure was such that a leaf spring 18 was fixed.

[Problem to be solved by the invention]

In the conventional magnetic head described above, the shape of the first slider piece 11 is such that the adhesive surface (the end surface of the inner central part of the L-shape) 19 is required to increase the adhesive area in order to ensure adhesive strength with the core. is almost T-shaped. For this reason, there was a problem in that it could not be manufactured by normal cutting.

For this reason, a method has been adopted in which a mold is made separately and the slider powder (for example, ceramic) is sintered.

However, this method has poor dimensional accuracy;
The drawback was that some machining was required, which increased the number of manufacturing steps and resulted in poor productivity.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic head device which can improve the disadvantages of the conventional example, and in particular can be easily machined and improve dimensional accuracy, and at the same time can improve productivity. shall be.

[Means to solve the problem]

The present invention includes a slider body equipped with an erasing coil and a recording/reproducing coil, and a leaf spring that is fixed to an end surface of the slider body on the side opposite to the medium facing surface and supports the slider body.

The slider body includes first and second slider members each having a convex cross section in the longitudinal direction, and a third slider member having a relatively wide rectangular cross section in the longitudinal direction. The core member is interposed between the first and second slider members and is formed in an E-shape so that each coil can be mounted thereon.

This aims to achieve the above-mentioned purpose.

[For production]

The slider main body is divided into a plurality of easily machined component members, which are machined in advance, and then integrally bonded and assembled with the core member.

As a result, since machining technology can be effectively employed, the precision of the slider body can be improved, and productivity can also be improved.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG.

Here, the same reference numerals are used for the same constituent members as in the conventional example described above.

The embodiment shown in FIG. 1 includes a slider body 1 equipped with an erasing coil 15 and a recording/reproducing coil 14, and an end surface opposite to the medium facing surface (lower surface side in FIG. 1) formed on the slider body 1. The plate spring 18 (see FIG. 3) is fixed to the slider body 1 and supports the slider body 1.

As shown in FIG. 1, the slider body 1 includes first and second slider members 2 and 3 each having a convex cross section along the longitudinal direction, and a relatively wide cross section along the longitudinal direction. It is interposed between the third slider member 4 formed in a rectangular shape and the first and second slider members 2.3, and formed in an E-shape so that each of the above-mentioned coils 15° 14 can be installed. It is constituted by a core member 13.

Since one or both sides along the longitudinal direction of the first and second slider members 2.3 form an adhesive surface, the convex portion functions to increase the area of the adhesive surface,
This ensures sufficient adhesive strength with the core member 13. Further, the third slider member has a width d
is set relatively large, thereby providing a wide adhesive surface to the leaf spring (numeral 18 in FIG. 3), and the adhesive strength at this point is also strengthened.

Reference numeral 3A indicates a cut groove formed on the medium facing surface 16 side of the second slider member 3.

Each of these constituent members is indicated by arrow A in FIG.

They are transported in the directions shown by B and C and fixed together with adhesive. The other configurations are the same as the conventional example described above.

Although the first and second slider members 2.3 are made of ceramic in this embodiment, they may be replaced with other materials as long as they function equally well. Also,
The third slider member is made of a magnetic material in this embodiment. As a result, there is an advantage that the head section is magnetically shielded on one side. Note that this third slider member may be made of other materials such as ceramic.

In this way, since each slider member 2 to 4 has a simplified shape, machining becomes easy, and therefore machining accuracy can be effectively improved.
Since the overall assembly is performed using an adhesive, the number of steps required for adhesion in the process can be relatively reduced in that the assembly can be performed at one time, which has the advantage of improving productivity.

Further, if the third slider member 4 is formed of a magnetic material, a magnetic head device that is resistant to external noise and has high reliability can be obtained.

〔Effect of the invention〕

As described above, according to the present invention, since the slider body is formed in a plurality of parts with easy-to-machine shapes and assembled by gluing them together, the core member and the supporting plate are It is possible to provide an excellent magnetic head device that can be mass-produced with fewer manufacturing steps while ensuring sufficient adhesive strength to the spring.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention, FIG. 2 is an exploded perspective view showing a conventional example, and FIG. 3 is a sectional view including the recording/reproducing coil 14 in an assembled state of FIG. be. DESCRIPTION OF SYMBOLS 1...Slider body, 2...First slider member, 3...Second slider member, 4.
...Third slider member, 13... Core member, 14... Recording and reproducing coil, 15...
... Erasing coil, 18... Leaf spring.

Claims (3)

[Claims] (1) A magnetic head device comprising a slider body equipped with an erasing coil and a recording/reproducing coil, and a leaf spring fixed to the end surface of the slider body on the side opposite to the medium facing surface and supporting the slider body, The slider body includes first and second slider members each having a convex cross section in the longitudinal direction, and a third slider member having a relatively wide rectangular cross section in the longitudinal direction. and a core member formed in an E-shape and interposed between the first and second slider members so that each of the coils can be mounted thereon. (2) The magnetic head device according to claim 1, wherein each of the first and second slider members of the slider body are made of ceramic. (3) The magnetic head device according to claim 1, wherein the third slider member of the slider body is formed of a magnetic material.