JPH01211211A - Composite type floating magnetic head - Google Patents

Abstract

PURPOSE:To simplify manufacturing, to reduce man-hour and to improve yield by joining a head core chip in a notch provided on the side plane at the slider rail plane side on one side of a floating head slider by welding glass or a bonding agent. CONSTITUTION:The notch 13 is provided on the side plane of the slider rail plane on one side of a pair of slider rail planes 12 provided on both sides of the upper plane of a slider 11 made of ceramics, and the head core chip 14 is arranged so that the side plane on one side can be located at the same plane as the side plane of the slider 11, and the side plane on the other side of the head core chip 14 is joined in the plane of the notch 13 by the welding glass or the bonding agent. The sliding plane 14c of the head core chip 14 is located in the same plane as the slider rail plane 12 of the slider 11, which constitutes a composite type floating magnetic head. In such a way, by joining the slider 11 with the head core chip 14, it is possible to simplify manufacturing work, and to reduce the man-hours, and to improve the yield.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a composite floating magnetic head for data recording and reproduction used in fixed magnetic disk drives and the like.

2. Description of the Related Art A conventional composite type floating magnetic head will be described with reference to the external perspective view of FIG. In Fig. 4, 1 is a floating head slider (1) made of a non-magnetic block such as ceramic.
(hereinafter abbreviated as slider), and the upper surface 1a of the slider 1
The slider 1 has a pair of slider rail surfaces 2 on both sides of the slider 1 for generating floating pressure, and an end surface xb of the slider 1 has a groove 3 for coil winding. Then, a slit portion 4 is provided on one side of the slider rail surface 2, and the head core chip 5 for performing electromagnetic conversion is inserted into this slip so that the sliding surface 5A of the head core chip 5 is flush with the slider rail surface 2. The gap between the head core chip 5 and the slip section 4 is molded with glass or the like, and the head tip 5 is fixed within the slip section 4 to form a composite floating magnetic head. 6 shows this glass mold part.

Problems to be Solved by the Invention However, in the configuration of the conventional composite type floating magnetic head, the head core chip 5 is temporarily fixed in the slit part 4 of the slider l, and molten glass is poured into the slit part 4 from above. It takes a lot of man-hours, and there are problems in that the glass mold may be incomplete or the glass may flow too much due to temperature changes in the furnace and the length of time during glass molding. Furthermore, since the molten glass occupies a certain area as the glass mold part 6 on the slider rail surface 2, which is the contact surface with the disk medium, the generation of bubbles is unavoidable, which reduces the reliability of the mechanical interface with the disk medium. There was a problem of lowering the

The present invention solves the above problems, and provides a composite floating magnetic head that can simplify manufacturing, reduce man-hours, improve yield, and improve mechanical reliability with disk media. The purpose is to

Means for Solving the Problems In order to solve the above problems, the present invention consists of a non-magnetic block made of ceramic or the like, has a pair of slider rail surfaces on both sides of the upper surface for generating floating force, and has a coil winding on the end surface. A composite floating magnetic head in which a head core chip is accommodated in a floating head slider having a groove for wires, the floating head slider having a notch provided on the side surface of one of the slider rails to accommodate the head core chip. One side surface is arranged in the same plane as the side surface of the floating head slider, and the other side surface of the head core chip is bonded to the notch surface of the floating head slider with molten glass or an adhesive. The sliding surface is configured to be the same surface as the floating head slider rail surface.

Operation With the above configuration, the head core chip is bonded to the notch provided on the side surface of one of the slider rails of the floating head slider using molten glass or adhesive, thereby making it possible to connect the head core chip and the slip portion as in the past. There is no need to manage the process of pouring molten glass into the gap between glass molds or the temperature of the furnace during glass molding. Therefore, manufacturing can be simplified, the number of man-hours can be reduced, and yield can be improved.

In addition, by reducing the glass area on the slider rail surface, defects caused by air bubbles contained in the molten glass poured into the gap between the head core chip and the slip section, as in the past, are no longer caused, and the disk media Mechanical reliability is improved. Furthermore, by providing the head core chip on the side surface of the floating head slider, the gap depth of the head core chip can be managed, and the track width can also be regulated even after the head core chip is joined to the floating head slider. Therefore, the yield of track machining is improved.

Example Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is an external perspective view of a composite floating magnetic head according to an embodiment of the present invention, and FIGS. 2(a) and (b) are floating head sliders (hereinafter abbreviated as sliders) of the composite floating magnetic head.
FIG. 3 is an assembled perspective view of the head core chip. Figure 2 (
In a), reference numeral 11 denotes a slider made of ceramic or the like, and instead of the slit portion 4 of the slider 1 shown in FIG. One slide rail surface 1
A notch 13 is provided on the side surface of the second side. And the second
As shown in FIG. 1, the head core chip 14 for performing electromagnetic conversion formed as shown in FIG. The other side surface 14b of the head core chip 14 is bonded within the surface of the notch 13 of the slider 11 with molten glass or adhesive, and the sliding surface 14C of the head core chip 14 is connected to the slider 11.
A composite floating magnetic head is constructed so as to be located in the same plane as the slider rail surface 12 of the slider rail. Here, 15 indicates a joint.

In this way, the slider 1 can be
1 and the head core chip 14, there is no need for the conventional process of pouring molten glass into the gap between the head core chip and the slip, or for controlling the furnace temperature and time during glass molding, making the manufacturing process easier. It is possible to simplify the process, reduce man-hours, and improve yield.

Furthermore, since the glass area of the slider rail surface 12 is reduced, bubbles contained in molten glass do not occur as in the conventional case, and mechanical reliability with the disk medium can be improved. Furthermore, the head core chip 14 is moved to the slider 1.
Since it is installed on the side of 1, the gap depth can be managed.
Furthermore, the track width can be regulated even after the head core chip 14 is bonded to the slider 11, and the yield of track processing can be improved.

FIG. 3 shows another embodiment of the composite type floating magnetic head of the present invention. In FIG. 1, one side 14a of the head core chip 4 is shown.
The central part of the head core chip 18 is cut and filled with molten glass, and the gap width has already been determined. In FIG.
It is formed at the same time as forming the side surface width regulating side of the slider rail surface 17 of No. 6, and the gap width can be set arbitrarily and the gap width is integrated, and the same effect as the embodiment shown in FIG. 1 can be achieved. Can be done. Here, 19 indicates a joint.

Effects of the Invention As described above, according to the present invention, by bonding a pair of core chips that perform electromagnetic conversion to the side surface of a floating head slider using molten glass or adhesive, it is possible to eliminate the need for the conventional glass molding process or furnace during glass molding. There is no need to manage temperature or time, making it possible to simplify manufacturing work, reduce man-hours, and improve yield. Furthermore, by reducing the glass area of the slider rail surface, which is the disk medium contact surface, mechanical reliability during contact start/stop (C8S) can be improved. On the other hand, since the side of the pair core chip is placed on the side of the floating head slider, it is possible to manage the gap depth, and it is also possible to regulate the track width after the pair core chip is adhesively fixed to the floating head slider. Processing yield can be improved.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a composite floating magnetic head showing an embodiment of the present invention, and FIGS. 2(a) and 2(b) are assembly perspective views of a floating head slider and a pair core chip of the composite floating magnetic head. FIG. 3 is an external perspective view of a composite type floating magnetic head according to another embodiment of the present invention, and FIG. 4 is an external perspective view of a conventional composite type floating magnetic head. 11, 16... floating head slider, 12, 17
...Slider rail surface, 13...Notch, 14,1
8...Head core chip, 14a, 14b...
・Side surface of head core chip, 14C...Sliding surface of head core chip.

Claims (1)

[Claims] 1. The head core chip is housed in the floating head slider, which is made of a non-magnetic block such as ceramic and has a pair of slider rail surfaces on both sides of the top surface for generating floating force, and a groove for coil winding on the end surface. A composite floating magnetic head comprising: a notch provided in the side surface of the floating head slider on the side of one slider rail surface, and one side surface of the head core chip is arranged in the same plane as the side surface of the floating head slider. the other side of the head core chip is bonded to the notch surface of the floating head slider with molten glass or adhesive, and the sliding surface of the head core chip is flush with the slider rail surface of the floating head slider. A composite floating magnetic head configured as a.