JPH0664867B2 - Magnetic head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] The present invention is a structure of a magnetic head of a magnetic disk device, in which a gimbal holds a core slider by a strip-shaped portion, and a winding formed on the core The window is made large so that the height when the gimbal is locked to the magnetic head is made as small as possible.

[Industrial application field]

 The present invention relates to a magnetic head of a magnetic disk device.

Recently, magnetic disk devices are required to have a large capacity,
Along with this, there is a tendency for higher density mounting. Therefore,
Since the distance between the laminated discs becomes narrow, a magnetic head is required to have a mounting height as small as possible.

[Prior Art] FIG. 2 is a diagram for explaining a magnetic disk device. In the figure, a plurality of discs 1 are fixed to a spindle 2, and the spindle 2 is rotated at a high speed by a lower motor (not shown). A magnetic head 3 for reading / writing information on the disk 1 is arranged so as to face the disk 1, and the magnetic head 3 (the normal head is shown by a solid line) is connected to an arm 5 via a spring arm 4. It is fixed, and the arm 5 is fixed to the rotary actuator 6.

In this structure, since the arm 5 is structurally long and the inertia is large, the access time cannot be shortened. In order to solve this, there is a magnetic head whose arm 7 can be shortened as shown by the dotted line.

3 (a) and (b) are structural views of a conventional magnetic head.
(A) is a plan view and (B) is a side view.

In the figure, the magnetic head 3 has a core 9 having a winding portion 8 held by a core slider 10. The read / write gap portion 11 of the magnetic head 3 has a central axis 12 of the magnetic head 3.
Configure for above. In this case, the gimbal 13 is fixed to the lower side of the core slider 10. A spacer 14 is bonded to the spring arm 4 and the spring arm 4 is screwed to the arm 5. 16 indicates wiring. 17 is a taper for facilitating entry of AIR for the head to fly.

[Problems to be solved by the invention]

In the conventional magnetic head, since the magnetic heads are arranged between the disks 1 arranged at a predetermined interval, the height of the magnetic head held by the gimbal is restricted by the interval between the disks 1. Will receive. Therefore, when the space between the discs 1 is narrow, the size of the window 15 of the winding portion 8 becomes small, which makes it difficult to form the winding portion 8 having the required number of turns in terms of electromagnetic conversion characteristics. It was

[Means for solving problems]

 FIG. 1 shows the structure of the magnetic head of the present invention.

The present invention, as shown in FIG.
And a gimbal 13 'whose rear end is locked to the tip of the spring arm 4 and a core slider 10' held via the cymbal 13 ', and the gimbal is provided on the back surface of the core slider 10'. A fixing portion fixed to 13 'and an arrangement portion of the core 9'having a height H'which is larger than the height of the fixing portion are formed.
The fixed portion is a magnetic head fixed to the tip of the cymbal 13 ', and is formed at the tip of the gimbal 13' so as to intersect the extension line of the center line 12 of the spring arm 4 by a hollow hole. A strip-shaped portion is provided so that the strip-shaped portion is projected in the width direction of the core slider 10 ', and the disposing portion of the core 9'is on an extension line of the center line 12 from the tip of the gimbal 13'. It is configured to be formed so as to be projected.

With such a configuration, the above-mentioned problems can be solved.

[Action]

That is, in the conventional structure shown in FIG.
It is also conceivable to shorten the length of 13 and lengthen the core 9 to the bottom of the figure.

However, in this case, the gimbal 13 cannot hold the core slider 10 stably. On the other hand, as shown in FIG. 1, in the present invention, the gimbal 13 'has a belt-like portion formed at the tip thereof, and the core slider 10' on which the core 9'is disposed has a low-height fixing surface. It is formed so that the fixing is performed by intersecting with the band portion of ′. As a result, the overall height H'of the core slider can be increased, and a sufficient window 15 'for the winding portion 8 can be secured. Even if the mounting height of the head is reduced due to high-density mounting, it is possible to wind in the required number of turns in terms of electromagnetic conversion characteristics.

〔Example〕

FIG. 1 shows an embodiment of the present invention, (a) is a plan view,
(B) is a front view. The same reference numerals denote the same objects throughout the drawings.

In the figure, a magnetic head has a core 9'having a winding portion 8.
Of the magnetic head 3'consisting of
The write gap 11 is provided on the center axis 12 of the magnetic head 3 ', and the gimbal 13' fixed to the extension of the center line 12 of the spring arm 4 has a substantially triangular shape having a ladder-shaped hollow hole. The tip of the gimbal 13 'corresponding to the apex of the triangle is locked to the tip of the spring arm 4, and the strip of the tip of the gimbal 13' corresponding to the bottom of the triangle is the width of the core slider 10 '. The core slider 10 'is formed larger and is fixed by intersecting the fixing surface of the core slider 10' which is formed low in height, and the belt-shaped portion of the gimbal 13 'is projected from the width of the core slider 10', and A core 9'disposed at the tip of the core slider 10 'is formed so as to protrude from the strip-shaped portion.

Therefore, the strip-shaped portion protrudes in the seek direction of the spring arm 4 from the width of the core slider 10 ', and the holding of the core slider 10' in the seek direction is stabilized.

With this structure, the fixing surface of the core slider 10 'on which the winding portion 8 of the core 9'is formed can be easily extended in the lower surface direction so as to have a step with the engaging portion of the gimbal 13', and The size of the 9'window 15 'can be increased. As a result, the total height H'of the core slider can be increased to 2 mm from the conventional value of 1 mm in this embodiment, and a sufficient window 15 'of the winding portion 8 can be secured. Others are the same as those of the conventional magnetic head shown in FIG.

Therefore, even if the mounting height of the head is made smaller in accordance with the high-density mounting, it is possible to involve the required number of turns in terms of electromagnetic conversion characteristics.

〔The invention's effect〕

As described above, according to the present invention, the core slider is fixed so as to intersect with the strip-shaped portion formed at the tip of the gimbal, so that the strip-shaped portion protrudes in the width direction of the core slider, and Can be formed so as to project from the tip of the gimbal, and the size can be reduced, the core slider can be stabilized during seeking, and the height of the winding part in the core slider can be increased, and electromagnetic conversion can be performed. It is possible to wind the required number of turns, and excellent electromagnetic conversion characteristics can be obtained without increasing the mounting height of the head.

[Brief description of drawings]

1 (a) and (b) are diagrams for explaining an embodiment of the present invention, FIG. 2 is a diagram for explaining a magnetic disk device, and FIG. 3 (a) and (b) are structure diagrams of a conventional magnetic head. is there. In the figure, 3'is a magnetic head, 4 is a spring arm, 9'is a core, 10 'is a core slider, 11 is a gap part, 12 is a center line, 13' is a gimbal, 14 is a spacer, 15 'is a window, 16 Indicates wiring and 17 indicates taper.

Claims (1)

[Claims] 1. A gimbal (1) having a spring arm (4) and a rear end locked to a front end of the spring arm (4).
3 ') and a core slider (10') held via the cymbal (13 '), and a fixing portion fixed to the gimbal (13') on the back surface of the core slider (10 '). And a core (9 ') having a height (H') larger than the height of the fixing portion.
Is a magnetic head in which the fixing portion is fixed to the tip of the cymbal (13 '), and the spring arm (4) is formed at the tip of the gimbal (13') by a hollow hole. Is provided so as to intersect with an extension line of the center line (12) of the core (9 '), and the band-like portion is projected in the width direction of the core slider (10'). The magnetic head is characterized in that the arranging portion of (1) is formed so as to project from the tip of the gimbal (13 ') onto the extension line of the center line (12).