JPS6288130A - Floating type magnetic head - Google Patents

Abstract

PURPOSE:To improve the CSS resistance, and to simplify the manufacturing process by containing a gap part in a slide rail, and also forming a winding window of the lower part of the gap part, by a bar of a magnetic material to which winding has been performed in advance. CONSTITUTION:Slide rails 1b, 1b are provided on both sides of the upper face of one magnetic material core 1, and on the end part of its left side rail 1b, grooves 3, 3 are provided at an interval of a track width Tw. In the same way, grooves 4, 4 are provided on the opposed magnetic material core 2, and the cores 1, 2 are joined by glass 5a by butting the gap opposed surfaces 1a, 2a. Also, a winding window of the lower part of the gap part is formed by joining a bar 6a of a magnetic material to which a winding 7 has been performed in advance. Therefore, since the gap part is embedded, the CSS resistance is improved remarkably. Also, as for the winding window, it will suffice that the bar 6a is joined only, therefore, the manufacturing process can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floating magnetic head used in magnetic disk drives and the like.

[Conventional technology]

Conventionally, floating magnetic heads used in magnetic disk drives, etc. include Winchester-type heads (Figure 2), *film heads (Figure 3), and combo-knot heads (Figure 4). .

One evaluation method for showing the performance of these floating magnetic heads is 1css performance.

In other words, as the rotation of the magnetic disk starts and stops, the magnetic head repeatedly floats and contacts the magnetic disk surface, but if this repetition becomes too many, the magnetic head may scratch the magnetic disk surface. , the magnetic head or magnetic disk surface may be damaged due to the magnetic head or magnetic disk being caught. There is an evaluation method called C8S resistance that indicates the frequency with which this phenomenon occurs.
.

However, in order to solve the above problems, it is necessary to
It is necessary to improve the S properties.

Additionally, as magnetic disk drives have become more widely used, there has also been a demand for lower prices for magnetic/radicals.
It is now necessary to consider the simplification of the process involved in manufacturing magnetic heads, starting from the starting point.

[Problem that the invention seeks to solve]

Among the conventional magnetic heads mentioned above, the Winchester type head has slide rails lb on both sides, as shown in FIG.
A magnetic head 2c protrudes from the end of a slide rail 1c provided in the middle of the slide rail 1b, and since the thin film head is made of a multi-N film laminated as shown in Fig. 3, both of them are structurally resistant to C8S. Basically, it is difficult to improve performance.

Furthermore, although the composite shift head has the advantage of improving C8S resistance, it has a structure in which the magnetic head chip 2c is embedded in the slider 1b, so it has the drawback of requiring many manufacturing steps.

An object of the present invention is to provide a floating magnetic head that can improve the 1rtcss property and is easy to manufacture including the @ line process.

[Means for solving the problem, α]

As an embodiment of the floating magnetic head of the present invention is shown in FIG. 1, two slide rails lb, lb are provided on both sides of the upper surface of one magnetic core 1.
, lb (with slide rail 1 on one side)
A groove m3.3 is provided at the end of b at an interval of tracks @Tw, and a groove 4.4 similar to this groove 3.3 is provided at a position facing the groove 3.3 of the magnetic core 2 as prepared. and filling the opposing grooves 3.4 with laths 5a, with the gap-opposing surfaces 1a and 2a of both magnetic film cores 1.2 pointing toward each other;
In addition to bonding the two magnetic films, the lower frame of the winding window below the gap is formed by bonding a magnetic bar 6a on which a winding 7 has been previously applied as shown in FIG. .

[For production]

With the above structure, the magnetic herad gap is embedded within the slide rail 1b, so the 5CSS properties are significantly improved. Also, in terms of manufacturing, groove 3.
Since both magnetic cores 1.2 whose redrack width Tw was determined by the processing in step 4 are simply joined by filling with plus 5a, the number of steps is small (s!!) and easy to use.

Furthermore, the winding 7 is not done by passing the wires one by one through the narrow winding window. The efficiency of the winding process is improved in a way that was not possible before.

〔Example〕

Hereinafter, an example of the manufacturing process of the floating magnetic head of the present invention will be explained in the fifth section.
This will be explained with reference to Figures (a) to (e).

(Example 1) First, magnetic core carriers IA and 2A of a predetermined shape (in this example, one is type 1 and the construction is C type with a longitudinal groove 2b) with mirror-finished gap facing surfaces 1a and 2a are manufactured. do (
MS5 figure (a)).

Next, grooves 3.3 and 4.4 for determining the track width Tm are formed at an interval of the track width Tw in the upper corners of the gap facing surfaces 1a and 2a of the magnetic core carriers IA and 2A. (In this example, it is processed diagonally.) Further, a non-magnetic material (not shown) for regulating the gap is formed on the gap facing surfaces 1a and 2a (fifth
Figure (b)).

The gap facing surfaces 1a and 2a of the magnetic core carrier 1A12A thus formed are brought into contact with each other (Fig. 5(c)), and the glass rod 5 is inserted into the longitudinal groove 2b (Fig. 5(d)).
, heat treatment is performed to melt the glass rod 5 to form each rR3.
, 4 are filled with laths 5a, and also in the longitudinal grooves 2b, the gaps are filled with laths 5a for reinforcement, and the magnetic core carriers IA and 2A are joined to produce a block (Fig. 5). (e)).

The blocks joined in this way are cut and machined into a predetermined shape. At this time, the lower frame 6 of the winding window below the gap is removed and the winding window is separately wound [
A magnetic bar 6a (FIG. 2) coated with 7 is inserted into this removed portion and bonded to produce a magnetic head having completed the winding process as shown in FIG.

(Embodiment 2) It is also possible to take the same steps as above and wind the magnetic material around the par 68 by inserting a bobbin that has been wound in advance into a coil with the required number of turns.

〔Effect of the invention〕

As described above, according to the present invention, since the gap portion is built into the slide rail, the 1itcss property is improved, and the manufacturing process is reduced because one or more heads can be manufactured by one joining. The process is simplified, and the winding process is also simplified, allowing for highly efficient production.

In addition, by forming gap sections on both slide rails with the same 7w processing as described above, it becomes possible to use magnetic heads of the same shape on both the upper and lower sides, allowing both the upper and lower sides of the disk to be used. Seed cores can be made with one core.

Furthermore, by switching between the gaps on both sides and operating the disc, the usage efficiency of the disc can be improved.

[Brief explanation of drawings]

Fig. gi is a perspective view showing one embodiment of the floating magnetic head of the present invention, a perspective view of a magnetic bar provided with a second winding, and Fig. 3.4.
．． Figure 5 is a perspective view of a conventional floating magnetic head.
Figures (, ), (b), (C), (d), and (e) are perspective views showing an example of the manufacturing process of the floating magnetic head of the present invention. 1.2: Magnetic core, Ia, 2a: Gap opposing surface,
1b varnish slide rail, 3.4: groove, 6: lower frame of winding window, 6a: magnetic bar, 7 2 winding agent patent attorney Takashi Honma Figure 6

Claims (1)

[Claims] One of the magnetic cores is provided with a groove having a track width at the end of at least one of the slide rails provided on both sides, and a similar groove is provided at a position opposite to the groove. The opposite side of the gap is brought into contact with the other magnetic core, and glass is filled in the opposing groove to join both magnetic cores, and a part of the winding window provided below the gap part A floating magnetic head characterized in that it is formed by bonding together bars of magnetic material that have been pre-wound.