JP3123637B2 - Support device for magnetic head for magneto-optical recording - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supporting a magnetic head for magneto-optical recording.

[0002]

2. Description of the Related Art FIG. 3 is a perspective view showing a schematic configuration of a conventional magnetic head for magneto-optical recording, in which a light beam device 2 faces one surface of a magnetic disk 1 and a support 3
The magnetic head holding slider 6 attached via the fixed body 4 and the leaf spring 5 comes into contact.

FIG. 4A is a plan view showing a conventional magnetic head support device, and FIG. 4B is a side view thereof. FIG.
In (A), the leaf spring 5 is drawn with diagonal lines for clarity of illustration. One end of the leaf spring 5 is fixed to the fixed body 4 by spot welding or the like. The slider 6 is attached to the leaf spring 5 by fitting the protrusion 6 a on the upper surface of the tip of the slider 6 holding the head 9 and bonding the slider 6 to the gimbal spring 7. In addition,
The fixed body 4 is provided integrally with a pole 10 for supporting the magnetic head,
The slider 6 is supported by hooking a hook-shaped bent portion 7b of a gimbal spring 7 on the tip of the rod 10. Reference numeral 11 denotes an FP connected to terminals 12 at both ends of the coil of the magnetic head 9.
C (flexible printed circuit board).

[0004] This magnetic head support device includes a reference hole 13.
Leaf spring fixed body 4 having a mounting hole 16 of Yaneji 15 5
And the slider 6 is adhered to the gimbal spring 7 and then fixed so that the reference projection 14 provided on the support 3 and the center O of the magnetic pole are at predetermined positions including the X and Y directions. The body 4 is fixed to the support 3 with the screw 15 while adjusting the position.

[0005]

Since the magnetic head 9 must be compatible with various magnetic disks 1 having a slight dimensional difference, the center O of the magnetic pole is required.
The distance between the disk and the recording / reproducing point of the magnetic disk 1 is several tens μm.
m or less is required. However, the reference hole 13
According to the conventional structure in which the leaf spring 5 is spot-welded to the end of the fixed body 4 provided with the base member, the reference hole 13 and the center between the magnetic pole It is unavoidable that a mounting error of about 50 μm occurs between the part O.

That is, as shown in FIG. 4B, when the distance a from the reference projection 14 to the center O of the magnetic pole is set in the X direction, the center of the magnetic pole from the end of the leaf spring 5 is set. The mounting error of the distance b to the portion O, the error of the distance c from the reference hole 13 to the leaf spring 5 when the leaf spring 5 is attached to the fixed body 4, and the error d when the reference hole 13 is attached to the reference projection 14 Occur independently of each other, and these errors are accumulated, resulting in a large error.

Therefore, finally, it is important to determine the position of the magnetic head 9 integrating these components. For this reason, conventionally, the reference hole 13 of the fixed body 4 is formed slightly larger than the reference projection 14, and the mounting hole 16 formed by the screw 15 is formed larger than the screw 15, and the fixed body 4 is fixed in the X and Y directions. Then, the fixing body 4 is fixed to the support body 3 by tightening the screw 15 after adjusting the position. In this case, since the center O of the magnetic pole is not visible, the position of the fixed body 4 is adjusted with the corner of the slider 6 as a reference point.

As described above, conventionally, when the magnetic head 9 is mounted on the support 3, the magnetic head 9 and the reference projection 14 must be aligned one by one for each magnetic head 9. However, this is troublesome, and this has led to an increase in cost and a reduction in the yield of integrated products.

SUMMARY OF THE INVENTION In view of the above problems, the present invention makes it easy to align the reference projection of the support with the center of the magnetic pole, thereby contributing to a reduction in cost and an improvement in yield. It is an object of the present invention to provide a support device for a magnetic head.

[0010]

To achieve the above object, according to an aspect of the support device of the magneto-optical recording magnetic head according to claim 1,
One end of a leaf spring is fixed to a support that is moved in the radial direction of a magnetic disk via a fixed body, and a magnetic head support device for magneto-optical recording comprising a magnetic head attached to the leaf spring. A reference projection is provided, a reference hole matching the reference projection is provided on the leaf spring, a hole communicating with the reference hole is provided on the fixed body, and a reference projection provided on the support is provided on the fixed body. The leaf spring is attached to the support by fitting the reference hole of the leaf spring and the reference hole of the leaf spring closely to the reference projection.

According to a second aspect of the present invention, the hole provided in the fixed body is formed larger than a reference hole provided in the leaf spring.

[0012]

According to the present invention, the distance between the center of the reference hole and the magnetic pole provided in the plate spring is set in advance, and since the reference hole of the leaf spring is closely fitted to the reference protrusion of the support, the plate When the spring is attached to the support, the distance from the reference projection to the center of the magnetic pole is automatically set.

[0013]

FIG. 1A is a plan view showing an embodiment of a supporting device for a magnetic head for magneto-optical recording according to the present invention, and FIG.
Is a side view thereof. In FIG. 1, components denoted by the same reference numerals as those in FIGS. 3 and 4 exhibit the same functions. In the present embodiment, the leaf spring 5 is not welded to the tip of the fixed body 4 but is welded (adhesion, screwing, caulking or the like) so that the leaf spring 5 covers almost the entirety of the fixed body 4. As shown in the side sectional view of FIG. 2A and the sectional view of FIG. 2B, the leaf spring 5 is provided on the support 3 at a portion overlapping the fixed body 4 of the leaf spring 5. A reference hole 17 corresponding to the reference projection 14 is provided, a hole 18 communicating with the reference hole 17 is provided in the fixed body 4, and a hole 18 provided in the fixed body 4 is provided in the reference projection 17 provided on the support 3. And the leaf spring 5 is attached to the support 3 by closely fitting the reference hole 17 of the leaf spring 5 to the reference projection 14.

With such a structure, the reference hole 17 is
Since the magnetic poles are provided at a predetermined distance from the center O of the magnetic pole, errors are not accumulated as in the related art, and the mounting position accuracy of the magnetic head 9 is improved, and the yield is improved. The distance a between the reference projection 14 and the center O of the magnetic pole can be obtained simply by fitting the reference hole 17 closely to the reference projection 14 and fixing the fixed body 4 to the support 3 together with the leaf spring 5 with the screw 15 (FIG. B)
Is set with high accuracy. Therefore, the leaf spring 5 or the magnetic head 9 can be accurately attached to the specified position of the support 3 without adjusting the position of the fixed body 4 with respect to the support 3. Further, since the leaf spring 5 has a structure extending from the reference hole 17 to the opposite side of the magnetic head 9, it can be used as a mounting portion for fixing the extended portion with a screw 15 or the like.

Further, as in this embodiment, a hole 18 provided in the fixed body 4 in communication with the reference hole 17 of the leaf spring 5 is
7 (R> r as shown in FIG. 2 (B)) so that the fixed body 4
The reference hole 1 is fixed even if it is fixed
7 does not block. For this reason, the leaf spring 5
When fixing is performed by spot welding or the like, there is no need to accurately position, and assembly is facilitated.

In the present invention, the leaf spring 5 is fixed to the fixed body 4.
It is not necessary to cover the entire surface, and for example, a structure in which the portion of the screw 15 is not covered with the leaf spring 5 may be employed. Also, the reference protrusion 14
Instead of being formed integrally with the support 3, a structure formed separately may be fixed to the support 3.

[0017]

Effects of the Invention According to claim 1, the reference projection provided on the support. Thus mounting the leaf spring to the support by closely fitted the reference holes of the leaf spring fitted with a magnetic head, part cross Accumulation of mounting errors between the magnetic heads is eliminated, the mounting position accuracy of the magnetic head is increased, and the yield is improved. Further, since it is not necessary to adjust the distance from the reference projection of the support to the magnetic head, the number of assembling steps is reduced and the assembling is facilitated. Further, cost reduction can be achieved by facilitating the assembly and improving the yield.

According to the second aspect , the hole provided in the fixed body in communication with the reference hole is formed larger than the reference hole provided in the leaf spring.
Therefore , it is not necessary to accurately position the leaf spring with respect to the fixed body, and the assembling of the magnetic head supporting device is further facilitated.

[Brief description of the drawings]

FIG. 1A is a magnetic head for magneto-optical recording according to the present invention.
FIG. 2B is a plan view showing one embodiment of the supporting device , and FIG.

FIG. 2A is a side cross-sectional view of a leaf spring mounting portion of the present embodiment, and FIG. 2B is a cross-sectional view showing a relationship between a reference hole of the leaf spring and a hole of a fixed body communicating therewith in the embodiment. It is.

FIG. 3 is a perspective view showing a conventional support device for a magnetic head for magneto-optical recording.

FIG. 4A is a plan view showing a conventional magnetic head support device for magneto-optical recording, and FIG. 4B is a side view thereof.

[Explanation of symbols]

1: magnetic disk, 2: light beam device, 3: support,
4: fixed body, 5: leaf spring, 6: slider, 7: gimbal spring, 9: magnetic head, 10: pole for supporting magnetic head,
11: flexible printed circuit board, 14: reference projection, 1
5: Screw, 17: Reference hole, 18: Hole

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 21/16 G11B 11/105

Claims (2)

(57) [Claims] An apparatus for supporting a magnetic head for magneto-optical recording, wherein one end of a leaf spring is fixed to a support that is moved in a radial direction of a magnetic disk via a fixed body, and a magnetic head is attached to the leaf spring. A reference projection is provided on the support, a reference hole matching the reference projection is provided on the leaf spring, and a hole communicating with the reference hole is provided on the fixed body, and a reference projection provided on the support is provided. A support device for a magnetic head for magneto-optical recording, wherein a hole provided in the fixed body is fitted, and a reference hole of the plate spring is closely fitted to the reference projection, and the plate spring is attached to the support. . 2. A supporting device for a magneto-optical recording magnetic head according to claim 1 , wherein said hole provided in said fixed body is formed larger than a reference hole provided in said leaf spring.