JPH0418364B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a magnetic head, and particularly to a magnetic head using a thin plate magnetic material for the magnetic core.

BACKGROUND OF THE INVENTION In recent years, with the spread of magnetic disk drives in tape recorders, VTRs, computer systems, etc., magnetic recording methods have become commonplace, and in particular, the demand for magnetic heads as magnetoelectric conversion elements continues to grow significantly.

In magnetic heads, it is common to wind a magnetic core made of a magnetic material with a magnetic gap formed on the sliding surface with a magnetic recording medium such as a magnetic tape, and extract output from this winding.
Magnetic heads, such as those used in magnetic heads for VTRs, which use a very thin magnetic material for the core and attach this core to a magnetic head substrate have the following drawbacks.

Conventionally, when forming a magnetic head using a thin plate magnetic material for the magnetic core, as shown in FIG.
In many cases, a magnetic core 1 made of a thin magnetic material is sandwiched between reinforcing members 2 and 3 made of a non-magnetic material and bonded to each other from both sides, and is further bonded and fixed onto a magnetic head substrate 4. The front surface of the core consisting of the magnetic core 1 and reinforcing materials 2 and 3 is shaped into a circle as shown, and this surface becomes the sliding surface with respect to the magnetic recording medium.

In the conventional magnetic head formed as described above, the magnetic core 1 is electrically insulated from the magnetic head substrate 4 by the reinforcing material 3, and when it slides on the magnetic recording medium, the magnetic core 1 and the substrate 4 are separated. The drawback was that static charge was accumulated between the two and the discharge produced noise.

Purpose The present invention was made in order to eliminate the above-mentioned drawbacks of conventional magnetic heads, and an object of the present invention is to provide a magnetic head that can prevent noise generation due to static charges generated between a magnetic core and a magnetic head substrate. shall be.

Embodiments Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 2A shows an embodiment of the present invention, in which the same parts as in FIG. 1 are given the same reference numerals.
In the figure, the reference numeral 1 indicates a magnetic core made of a thin magnetic material, and reinforcing materials 2 and 3a made of a non-magnetic material are bonded to both sides of the magnetic core to form a single core. The reinforcing member 3a has a rear end corner cut out as shown in the figure, and a conductive material 6 having the same shape as the cutout portion is adhered to the cutout portion. In this case, a conductive adhesive is used at least for bonding between the magnetic core 1 and the conductive material.

The single core formed as described above is adhered to a magnetic head substrate (not shown) in the same manner as shown in FIG. 1, and further winding is applied to the winding window to form a magnetic head.
In this case, at least the adhesion between the conductive material 6 and the magnetic head substrate 4 is performed using a conductive adhesive.

With the above configuration, the static charge generated between the magnetic core 1 and the magnetic head board 4 can be released to the magnetic head board 4 via the conductive material 6, so that the static charge can be removed without increasing the size of the head. It is possible to prevent the generation of noise due to the discharge of

Note that the shape of the conductive material 6 and the reinforcing material for sandwiching it is not limited to the shape shown in FIG. 2A, but the rear end of the reinforcing material 3b may be cut into a thin strip as shown in FIG. Alternatively, a conductive material 6 having the same shape as the cutout portion may be inserted and bonded thereto.

Effects As is clear from the above explanation, according to the magnetic head of the present invention, the magnetic core made of a thin magnetic material and the magnetic head substrate can be connected through the conductive material in the notch of the reinforcing plate disposed between them. Since the configuration is such that the magnetic head is electrically connected to the magnetic head, the shape of the magnetic head itself does not increase in size, and static charge is accumulated between the magnetic core and the magnetic head board, and noise generation due to discharge is prevented. It is possible to provide an excellent magnetic head that is capable of

[Brief explanation of drawings]

FIG. 1 is a perspective view of a magnetic head using a conventional thin plate magnetic material for the magnetic core, and FIGS. 2A and 2B are exploded perspective views of the magnetic core portion of a magnetic head according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Magnetic core, 2, 3a, 3b, 3c... Reinforcement material, 4... Magnetic head board, 6... Conductive material.

Claims (1)

[Claims] 1. A magnetic core made of a thin plate magnetic material, a non-magnetic reinforcing plate whose one side is joined to one side of the magnetic core, and the other side of the reinforcing plate is connected to a head. The magnetic head is adhesively fixed on a substrate, and a notch is provided in a part of the reinforcing plate facing one side of the magnetic core, and a conductive material is placed in the notch, so that the magnetic A magnetic head characterized in that a core and the substrate are electrically connected. 2. The magnetic head according to claim 1, wherein the adhesion between the magnetic core and the conductive material and the adhesion between the substrate and the conductive material are performed using a conductive adhesive.