JPH1049819A - Magnetic head for magnetic disk - Google Patents

Abstract

(57) [Problem] To prevent deformation of a slider sliding surface by a coil. A slider (5) for holding a magnetic head core (2) and a coil bobbin (4) mounted on the magnetic head core (2), and flanges (4a, 4b) formed on both sides of the coil bobbin (4). Is the outer wall (5f) of the slider (5)
To the coil winding portion (4) of the coil bobbin (4).
d) is a notch (5e) formed in the slider (5).
In the magnetic head for a magnetic disk extending inside,
The distance dimension (F) between the flanges (4a, 4b) of the coil bobbin (4) is determined by the width dimension (G) of the opposed notch (5e).
Form into smaller dimensions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head for a magnetic disk, and more particularly, to a magnetic head for recording / reproducing a magnetic disk.

[0002]

2. Description of the Related Art Generally, a magnetic disk device such as a floppy disk device is configured to record and reproduce information by a magnetic head. The magnetic head is held by a head carriage, and the magnetic head is moved to an arbitrary position on the floppy disk by moving the head carriage between the inner peripheral side and the outer peripheral side of the floppy disk. In recent years, high-density recording and reproduction have been performed, and the conventional 1 MB (megabyte) as a standard capacity has been used.
Alternatively, a floppy disk having a recording capacity of 100 MB or more for high capacity from 2 MB has been developed.

FIGS. 2 and 3 illustrate a general magnetic disk magnetic head. In the drawing, 1 is a standard-capacity magnetic head core having a head core gap 1a, 1b for erasing and a recording / reproducing head core gap 1c, and 2 is a high-capacity magnetic head core having a head core gap 2a for recording / reproducing. Reference numerals 3, 3 indicate coils mounted on the magnetic head core 1, reference numeral 4 indicates a coil bobbin mounted on the magnetic head core 2 (coils wound around the coil bobbin will be described later), and reference numeral 5 indicates one side adhered to the magnetic head core 1. A slider which is joined and has a groove 5a, a groove 5b, a groove 5c and a cutout opening 5b for fixing the magnetic head core 2 is formed. A slider 6 is bonded to the magnetic head core 1 with one side adhered.

FIG. 4 and FIG. 5 illustrate the main part of a conventional magnetic disk magnetic head. Here, FIGS. 2 and 3
The same reference numerals are given to the portions corresponding to and the detailed description is omitted. In FIG. 4, a notch 5e having an end width B is formed in the slider 5, and a part of the magnetic head core 2 is seen through. The coil bobbin 4 includes flanges 4a and 4b and a coil winding 4d, and is formed as a distance dimension A (A> B) between the flanges 4a and 4b. In FIG. 4, the coil bobbin 4 is moved in the direction of arrow C, and the winding portion 4d is mounted in the slider 5 as shown in FIG. At this time, the winding part 4d
Covers the magnetic head core 2, and the flanges 4 a and 4 b contact the outer wall 5 f of the slider 5. Thereafter, the coil 8 is wound on the winding portion 4d.

[0005]

However, the magnetic head for a magnetic disk having the above-mentioned structure has a flange 4a of the coil bobbin 4,
4B is the width B of the notch 5e of the slider 5
Since the coil 8 is formed in a larger size, as shown in FIG. 5, the coil 8 acts on the inner wall of the notch 5e of the slider 5 as shown by arrows D and E, thereby the floppy disk including the magnetic head core 2 is formed. However, there is a problem that the sliding surface of the slider opposed to the above is deformed.

[0006]

An object of the present invention is to provide a slider which holds a magnetic head core, and a coil bobbin mounted on the magnetic head core, and flanges formed on both sides of the coil bobbin abut against an outer wall of the slider. In a magnetic head for a magnetic disk in which a coil winding portion of the coil bobbin extends in a notch formed in the slider, the distance between the flanges of the coil bobbin is set to the width of the opposed notch. The problem can be solved by forming the smaller size.

According to the above construction, the distance between the flanges of the coil bobbin is set to be smaller than the width of the opposed notch, whereby the stress of the coil acts not on the slider but on the flange forming the coil bobbin. Therefore, the deformation of the slider sliding surface due to the stress of the coil is prevented.

[0008]

FIG. 1 shows an embodiment of a magnetic head for a magnetic disk according to the present invention. Here, parts corresponding to those in FIGS. 2 to 5 are denoted by the same reference numerals, and detailed description thereof will be omitted. In FIG. 1, the slider 5 is formed with a cutout 5e having an end width G, and a part of the magnetic head core 2 is viewed. The coil bobbin 4 is a collar 4
a, 4b, and a winding part 4d of the coil.
The distance between 4b is formed as F. Similarly to FIG. 4, the coil bobbin 4 is moved so that the winding portion 4 is moved as shown in FIG.
d is mounted in the slider 5. At this time, the winding portion 4d covers the magnetic head core 2, and the flanges 4a and 4b abut on the outer wall 5f of the slider 5. Thereafter, the coil 8 is wound on the winding portion 4d.

[0009] The above-described structure is realized by the notch 5 e of the slider 5.
The slider 5, the notch 5e and the coil bobbin 4 described in the above-described conventional example have the same shape except for the width G of the coil bobbin 4 and the dimension F between the flanges 4a and 4b of the coil bobbin 4.
In the present invention, the dimension F between the flanges 4a and 4b is formed to be smaller than the width dimension G. As a result, the stress of the coil 8 acts on the flanges 4a and 4b of the coil bobbin 4 instead of the inner wall of the notch 5e of the slider 5 as shown in FIG.
The deformation of the sliding surface of the slider 5 with the magnetic disk is prevented.

[0010]

As described above, a magnetic head for a magnetic disk according to the present invention includes a slider for holding a magnetic head core, and a coil bobbin mounted on the magnetic head core, and flanges formed on both sides of the coil bobbin. Abuts an outer wall of the slider, and a coil winding portion of the coil bobbin extends into a notch formed in the slider. Are formed to have dimensions smaller than the width of the opposed notch, so that deformation of the slider sliding surface due to stress of the coil is prevented.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of an embodiment of a magnetic head for a magnetic disk according to the present invention.

FIG. 2 is an exploded front view of a part of a general magnetic disk magnetic head.

FIG. 3 is an exploded plan view of a part of a general magnetic disk magnetic head.

FIG. 4 is a diagram showing a state before mounting a coil of a magnetic head for a magnetic disk according to the related art.

FIG. 5 is a front view of a main part of a conventional magnetic head for a magnetic disk.

[Explanation of symbols]

 1, 2 Magnetic head core 4 Coil bobbin 4a, 4b Flange 4d Coil winding part 5, 6 Slider 5e Cutout part 5f Slider outer wall 8 Coil

Claims (1)

[Claims] 1. A slider for holding a magnetic head core, and a coil bobbin mounted on the magnetic head core, flanges formed on both sides of the coil bobbin abut against outer walls of the slider, and a coil winding portion of the coil bobbin In the magnetic head for a magnetic disk, which extends into a notch formed in the slider, the distance between the flanges of the coil bobbin is formed to be smaller than the width of the opposed notch. A magnetic head for a magnetic disk, comprising: