JPS61115222A - Magnetic head and its production - Google Patents

Abstract

PURPOSE:To make production extremely easy by forming a base so as to have a housing groove converging forward, forming the constituting body of a head chip into the shape corresponding to the housing groove, assembling the head chip with the housing groove of the base and finishing integrally the head chip as it is together with the base. CONSTITUTION:The housing groove 2 provided with such a taper which converges forward is preliminarily formed on one side of the base 1. The base of the groove 2 is horizontal. A pair of core halves 3a, 3b are disposed to face each other thus constituting the main core. Reinforcing cores 4, 4 having wiring holes 5 are disposed so as to face with both faces of the main core. An SiO2 film for forming a gap is preliminarily deposited by evaporation to the part A of the core halves 3a, 3b. The head chip constituting bodies, i.e., the core halves 3a, 3b and reinforcing cores 4, 4 are disposed in the groove 2 and when these bodies are pushed from the rear, the head chip constituting bodies are tightly fitted to the base and the core halves 3a, 3b thereof are butted to each other. The base 1 and the head chip H are integrally joined by an adhesive agent.

Description

[Detailed Description of the Invention] 0) Industrial Application Field The present invention records high frequency signals such as television signals,
The present invention relates to a magnetic head for reproduction and a manufacturing method thereof.

Prior art The structure and manufacturing method proposed in Japanese Patent Application No. 57-180476 for a magnetic head using amorphous material as the main core consists of arranging a pair of half cores made of amorphous material facing each other, and The core was pressed simultaneously from all sides to maintain the abutted position, and in that state, adhesive was applied to assemble it, which was a difficult task. A method using a metal frame having spring properties has also been proposed in order to facilitate the butting of the half-core cores (Japanese Patent Application No. 58-212928).

(c) Problems to be Solved by the Invention However, in the above-mentioned prior art, the assembled head chip is removed from the butt jig.

It will be attached to a separately prepared head base, and then the tip will be rounded, the depth adjusted, and the coil wound.
), which had the disadvantage of being extremely difficult to work with, as it required many processes to handle them one by one. Additionally, there are also drawbacks such as damage to the head chip and difficulty in achieving positional accuracy when attaching it to the head base.

The present invention solves these problems.

2) Measures to solve the problem: The base is formed to have a storage groove that tapers toward the front, the head chip structure is shaped to correspond to the storage groove, and the head chip is assembled in the storage groove of the base. and finish it as one with the base.

(E) The head chip structure disposed in the storage groove of the working base is forced backward and pushed forward, overflowing into the storage groove, and is tightly fitted into the base. Then, in this state, it is joined and integrated with the base using an adhesive. The rounding of the tip and the winding are done while it is assembled to the base.

(f) Example @ 2 As shown in Figure 2, a storage groove (2) tapered toward the front is formed in advance on one side of the base (1). The bottom surface of this storage groove (2) is horizontal. (5a) and (51)) are half-core cores formed from amorphous ribbons in the shape shown in the figure, and a pair of core half-holes are arranged facing each other to form the main core. +41 (4) is a reinforcing core having winding holes (5) and is arranged so as to face both sides of the main core. The entire reinforcing core (4) (4) may be formed of a non-magnetic material such as glass, the front portion may be formed of a non-magnetic material such as glass, and the rear portion may be formed of a non-magnetic material such as ferrite. . core half-day i
A gap-forming 8102 film is deposited on the inner portion of &) (511). These head chip components, i.e. core half-open 11L) (5"), reinforced core (4) (4) t-second
Place them in the storage groove (2) in the prescribed order as shown in the figure ['@Figure 3 (
&)reference〕.

As shown in Figure 3 ('b), when force (Fl) is applied from behind and pressed, the head chip structure will fit tightly into the base.
j and its core half-days (5 &) ib) are matched against each other. At this time, a force (XP2) t is applied to the head chip structure from above as shown in t# & 5 (0).

In this state, by applying an adhesive such as resin, the base (11) and the head chip (6) are integrally joined, and the structure of the head chip is completed.

A predetermined R is applied to the tip of the magnetic head assembled in this way.
After processing, the coil (6) is wound around the coil winding part (7) to complete the process as shown in FIG. Note that a wiring board may be attached to the base (1) in advance or later, and the coil (6) t
, shall be connected to the wiring board.

In the above, the dimensions of the groove (2) provided in the base (1), the reinforcing core (41 (4)), and the core halves (5&) (5b) are the protrusion amount (t) from the tip of the base to the tip of the head tip.
) [see Figure 1PJ3 (a)] is determined to be a predetermined value. In addition, the core half-rests (1a) (1'b) are reinforced cores (1a, 1'b) as shown in the figure so that pressure can be applied to the rear end without difficulty.
It is advisable to determine the dimensions so that it can protrude more rearward than 41(4). The base (1) must be provided with the necessary wiring board and holes for fixing to the cylinder.

Naturally, they should be provided on a base that does not affect the assembly of the head chip structure.

For example, assume that a wiring board is provided on the back surface and a fixing hole is provided in the & section.

(G) Effects of the Invention According to the present invention, the step of removing the head chip 9 from the jig and attaching it to the base after assembling the head chip with the jig is not necessary, which is extremely advantageous in terms of manufacturing. In addition, in the magnetic head manufactured by the method of the present invention, the base and the head chip are precisely and firmly connected, and the head chip structure is precisely assembled, and the reliability is improved. Excellent in

[Brief explanation of drawings]

FIG. 1 is a perspective view of a magnetic head embodying the present invention.
! 2, 3, and 4 are diagrams for explaining the manufacturing method. (1) Base, +21 Storage groove, (31L)
(!11)) - Core half-off, (61... Coil, (
7)...Coil winding part, (6)...Head chip.

Claims (2)

[Claims] (1) A base with a storage groove that tapers toward the front;
A magnetic head comprising: a head chip which is housed in the storage groove and has a gap and a coil winding part and whose tip protrudes forward from the groove; and a coil wound around the coil winding part. (2) A head chip structure with a tapered tip having a shape corresponding to the storage groove is placed in the storage groove without being joined and assembled to a base having a storage groove that tapers toward the front, and is pressed from the rear. The head chip is tightly fitted to the head base, and in this state, the head chip and the base are joined with adhesive, and then the tip of the head chip protruding from the storage groove is rounded, and the tip of the head chip protrudes from the storage groove. A method for manufacturing a magnetic head, characterized in that a coil is wound around a coil winding part.