JPS5965922A - Magnetic head assembly body - Google Patents

Abstract

PURPOSE:To assemble easily a recording and reproducing part assembly body and an erasing part assembly body with high accuracy as to the dimensions and track width by attach-providing a non-magnetic reinforcing material onto one end face being parallel to a gap of a magnetic head core assembly body, and reinforcing firmly the core assembly body. CONSTITUTION:As for magnetic gaps of a recording and reproducing part assembly layer 20 and two layers of erasing part assembly layers 30, 40, which are manufactured by L-type and I-type core blocks by working and forming an Mn-Zn ferrite block, erasing gaps of the erasing part assembly layers 30, 40 are a converting gap of the recording and reproducing assembly layer 20 are arrayed and assembled so as to be insulated adjacently to a U-type reinforcing material 23 and L-type reinforcing materials 33, 43, respectively, the prescribed position and prescribed dimension relation are held, laminated assembling is executed by sticking resin or glass, and thereafter, furthermore, rod-like non-magnetic reinforcing materials 50, 51 are made to adhere, the bottom face of this assembly body is formed substantially to the same plane, and a connecting piece consisting of a magnetic material and a recording and reproducing coil, and an erasing coil are provided on the recording and reproducing part assembly layer 20 are the erasing part assembly layer, respectively, by which a magnetic head assembly body is manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tunnel erase type magnetic head assembly in which erasing core assemblies are arranged on both sides of a recording/reproducing core assembly, and these are assembled and stacked alternately.

In recent years, the magnetic recording density for magnetic recording and reproduction has rapidly increased, and for example, the floppy disk drive%
, 57i, the track density is being increased from 96TI) to more than 100TI)1 to accommodate the number of tracks per inch. Therefore, the dimensions of the magnetic head assembly are, for example, 192 TPI, the width of the recording/reproducing section core assembly is 0.085 mm, and the width of the erasing section core assembly is 0.085 mm.
．． 0425 mm and each core of the assembly was a t4RII plate, which caused various problems in manufacturing or structure of the magnetic head assembly.

A conventional tunnel erase type magnetic head assembly includes a multilayer magnetic transducer disclosed in Japanese Patent Publication No. 53-31763, in which two layers are separated by a conversion top, as shown in FIG.
Magnetic core part (2) with two legs and non-magnetic part (3)
It has a structure in which a core layer (4) consisting of a U-shaped ferrite core (5) and a doleramix slider (6) is laminated on both sides of a central layer (1) consisting of However, there are many problems in processing and assembling the product into an ultra-thin product with a thickness of 0.050 mm or less, which causes problems such as breakage or capping during assembly, resulting in a decrease in the yield of good quality products.

J, ta, JP 114i: 17-15218 Bow Publication No. 16
As shown in Figure 2, the head assembly consists of a core (81 (9)) with a pair of notches (10) and (11) to regulate the retrack width and form a conversion gap on the mutual joint surface. J, S1 to the main core part (7) and the center !1i4 (13)
The auxiliary core part (12), which is made up of lower parts (14) and (15), which regulate the rack width and form erasure cracks on the mutual joint surfaces, is arranged and joined on an F-shaped block (1G). The process is complicated, and the two processes are complicated. However, it is difficult to process the magnetic head assembly using the above method with high precision.
” There was a problem with the strike.

The present invention solves the problems of the magnetic head assembly described above, strongly reinforces the magnetic head core assembly, and improves the cutting and 1-rack width of the recording/reproducing section assembly and the erasing section assembly with high precision. The object of the present invention is to provide a magnetic head assembly that is easy to assemble.

In other words, the present invention provides a recording and reproducing unit assembly housing in which a non-magnetic reinforcing material is attached to one end surface parallel to the gear 17 of the core assembly that faces the conversion gear, and an I-shaped core and an L-shaped core assembly. - core and r
4M = jA Eraser section assembly layer with non-magnetic reinforcement 4A attached to one end surface parallel to the edge of the Kono7 assembly in which the rack width is regulated by the notch from the width direction. It consists of a recording and playback section with erase rolls on both sides of the assembly room.
This magnetic head assembly is comprised of PI4 stacked layers, each of which is laminated with Jζ layers, each of which is insulated adjacent to the non-magnetic reinforcing material of the adjacent assembly layer.

Below, the structure of the magnetic head assembly according to the present invention will be explained based on the drawings. FIG. 3 is an exploded perspective view of the magnetic head assembly according to the present invention.

The recording and reproducing section assembly (20) is converted by glass welding the type core (21) and type I-1 (22). A U-shaped reinforcing material (23) made of a non-magnetic material having the same width as this is fixed to the side end face of the I-shaped core (22) along the end face parallel to the knob. There is an IM and C on one board.

Two erasing section assembly layers (30) (40) attached with resin or glass on both sides of the recording/reproducing section assembly (20).
are L-shaped core (31) (41) and ■-shaped core (32)
(42) Add a non-magnetic +
A, 1-type reinforcement consisting of 131 (33) (43
) is parallel to the gear 17 lug, end face 1, that is, I type J7 (3
2) It is fixed to the side end surface of (42) and configured as a single plate.

The erasing section assembly layer (30) (40) has a rack width of 1~rack width when the assembly layers are laminated. L:J
L-shaped core (31) (41) notch (34)
(44) and is formed to a predetermined width (Fig. 4a), or similarly, when the assembly layers are laminated, the outer J
, move the L-shaped core (31) toward the recording/reproducing unit assembly (20).
) (41) A type 1 core (32) (42) It is regulated by notches (35) and (45) provided on both sides and formed into a predetermined width (same figure).

In addition, two erasing unit assembly layers (30>(40) are bonded to resin or glass C on both sides of the recording and reproducing unit assembly housing (20), respectively, and laminated and assembled. The eraser section assembly layer (30) (40) is attached to the U-shaped reinforcing member (23), and the recording/reproducing section assembly (20)
The conversion value of 17 is 1? (Tsu Reinforcement Month (33) (43)
) are arranged and assembled in such a way that they are adjacent to each other.

After holding each assembly layer in a predetermined position and a predetermined dimensional relationship, adhering resin or glass to form a laminated assembly, rod-shaped non-magnetic reinforcing materials (50) and (51) are further glued to complete this assembly. The bottom surfaces of the magnetic recording medium are made substantially the same plane, and the sliding surface of the magnetic recording medium is, for example, circularly polished to form a magnetic head assembly.

By referring to the magnetic head assembly having the configuration described in detail below, for example, in a magnetic head assembly having an extremely narrow track width of 1 to 192 TPI rack density and an eraser assembly layer thickness of 0.0425 mm or less, damage to the core piece may occur. It can be easily fabricated without using a magnetic head, and is extremely effective in improving assembly yield and increasing magnetic recording density.

Next, a method of manufacturing a magnetic head assembly according to the present invention will be explained based on an example.

Mari゛, rl++ -In) L light block was processed and molded to produce a type j7 block (61) and I type core block (62), and a calcium ditanate-based non-magnetic material block was processed and molded. U-shaped reinforcement block (63
), these blocks are stacked and assembled to form an l-type]
Afrock (61) and I-type 1177 flock (62) which core assembly has a conversion length of 2.0. How to weld the glass. This 1 piece 9 assembly (
A core wafer with a plate thickness of 0.085 mm is cut out from 64) and finished as a recording/reproducing unit assembly box (20).

Next, process and mold the Mn-Zn ferrite block to form L
Type core block (65) and Type I Noah block (66)
In addition, a calcium titanate-based non-magnetic shrine block was processed and molded to create an L-shaped reinforced block (67), and these blocks were stacked and assembled to form a "type core block (
The erase gap length due to the core assembly of 65) and I-type core block (66) is 2.97a+. The type 1 core block (65) has semicircular notches drilled at predetermined intervals between the glass welding butts, and these notches (68
) are also filled with glass. This block assembly (
69) is first cut at the center line of the notch (68), and then cut at the center between the notches (68) after the cut so as to be equal to the effective 1~rack width of the erasing part. , cut out two pieces with a thickness of 0.0425 ii + m, and put 11'' on the eraser assembly layer (30) (/1 (1)).

The recording and reproducing unit assembly layer (20) and the two erasing unit assembly layers (30) and (40) thus produced are laminated and assembled by adhering each layer with resin or glass, as shown in FIG. The magnetic gears and tabs of each assembly layer are located in the eraser assembly layer (30).
The erasure gear (40) is insulated adjacent to the U-shaped reinforcing member (23), and the conversion gear of the recording/reproducing section assembly (20) is adjacent to (43). After the array is assembled (maintaining the predetermined position and predetermined dimensional relationship, resin or glass is bonded, and laminated assembly is performed), rod-shaped non-magnetic reinforcing materials (50) and (51) are further bonded to cover the bottom of this assembly. Make the sliding surface of this magnetic recording medium substantially the same plane, for example, in a circle
A magnetic head assembly is fabricated by disposing a connecting piece made of a magnetic material and a recording/reproducing coil in the magnetic head 0), and an erasing coil in the erasing section assembly layer.

As described above, the magnetic head assembly according to the present invention has a simple structure, and can easily form the mowing and effective rack widths with high accuracy.
A and ali strong 4J i3+ board Jjiij is 17, so it has high strength and is effective in preventing defects such as breakage,
It is extremely effective in improving the yield of assembled good products and reducing manufacturing loss.

[Brief explanation of the drawing]

1 and 2 are perspective views of a conventional magnetic head assembly. FIG. 3 is an exploded perspective view of the magnetic head assembly according to the present invention, and FIG.
Figures M5 and 6 are perspective views of the assembly block of the magnetic head assembly according to the present invention. In the figure, 20...Recording and playback unit assembly, 21, 31.41
・・Good type core, 22, 32. 42 ・・I type” A, 23
...U type reinforcement material, 33.43-1 type reinforcement shrine, 34,4
4, 35. 45 = notch, 50° 51... reinforcing material. Applicant Tsukeo Special Metal Co., Ltd. 2131 Figure 2 Figure 3 Figure 4 (a) 4 (b) Figure 5 Figure 6

Claims (1)

[Claims] 1. A recording/reproducing unit assembly housing with a non-magnetic reinforcing material attached to one end surface parallel to the GiV-shaped part of the core assembly having a conversion gap, an I-shaped core and an L-shaped core. It consists of an eraser assembly layer with a non-magnetic reinforcing material attached to one end surface parallel to and covering the core assembly gillep, which regulates the erase gap from 1 to rack width with a notch, and an eraser assembly layer on both sides of the recording/reproducing unit assembly. A magnetic head assembly is formed by stacking a magnetic head assembly layer in which each magnetic gear 17 is adjacently insulated by a non-magnetic reinforcing material of an adjacent assembly layer.