JPH0328728B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a magnetic head position adjusting device for adjusting and fixing a plurality of mutually opposing magnetic heads at predetermined positions.

BACKGROUND OF THE INVENTION Magnetic disk devices, commonly called floppy disk devices, are widely used as external storage devices for computers. This type of magnetic disk device includes a single type in which one magnetic head slides on one side of the magnetic disk, and a dual type in which a pair of magnetic heads face each other and hold the magnetic disk between them and slide on both sides of the magnetic disk. is used.

For example, a magnetic head with a magnetic gap facing upward to slide on the bottom surface of a magnetic disk is defined as a 0-plane head, and a magnetic head with a magnetic gap facing downward in order to slide on the top surface of a magnetic disk is defined as a 1-plane head. I will define it as head.

The 0-plane head and the 1-plane head are provided at positions facing each other while holding the magnetic disk therebetween.

Figures 1a and 1b are a plan view and a side view, respectively, showing the mechanism on the 0-plane head side.

In FIGS. 1a and 1b, 1 is a 0-plane head carriage, and 2 is a 0-plane head. A zero-plane head 2 is fixed to one side of the zero-plane head carriage 1, and a screw hole 1a is provided in the other side.

Figures 2a and 2b are a side view and a plan view, respectively, showing the mechanism on the head side.

In FIGS. 2a and 2b, 3 is a one-sided head carriage, 4 is a leaf spring, and 5 is a one-sided head. A single head 5 is fixed to one side of the single head carriage 3, and a leaf spring 4 having a mounting hole 4a is provided on the other side.

Then, the first head 5 shown in FIG.
It is placed opposite to the upper surface of the 0-plane head 2 shown in FIG.

Figures 3a and 3b show that the screw holes 1a provided in the 0-face head carriage 1 and the mounting holes 4a provided in the leaf spring 4 are aligned, and the leaf spring 4 and the 1-face head carriage 3 are attached using screws 6. 1A and 1B are a plan view and a side view, respectively, showing a mechanism fixed facing the zero-head carriage 1. FIG.

In addition, in FIG. 3b, 7 represents the 0-plane heads 2 and 1.
A magnetic disk is shown clamped by surface heads 5. In FIGS. 3a and 3b, the installation position of the 1st surface head 5 is adjusted with respect to the 0th surface head 2. Specifically, the magnetic gap _g0 in FIG. 1a and the magnetic gap _g1 in FIG. 2b are adjusted. Adjust the relative position of However, in the conventional device, by making the diameter of the mounting hole 4a slightly larger, the movement of the single-head carriage 3 was given a degree of freedom and adjustment was possible.
It can freely move in the directions of arrows X and Y (approximately perpendicular to each other) shown in FIG. 3a, and in each direction of the rotation angle _θ1 .

Therefore, although it is possible to perform all three position adjustments described below, if you try to adjust it in one direction, it will also move in the other direction, and the magnetic gear will move in the other direction.
It was extremely difficult to accurately adjust the relative positions and angles of g ₀ and g ₁ .

Purpose The present invention aims to provide a magnetic head position adjustment device that can accurately adjust the position and angle of magnetic heads facing each other. The above objective is achieved by adding limitations.

EXAMPLES Hereinafter, the present invention will be explained in detail based on examples shown in the drawings.

In Fig. 4 a, b to Fig. 6 a, b, members given the same reference numerals as in Fig. 1 a, b to Fig. 3 a, b have the same functions, so repeated explanations will be omitted. .

In the plan view shown in FIG. 3a and the side view shown in FIG. 3b, a projecting convex portion 1b is formed on the other side of the zero-face head carriage 1 approximately in the middle of the screw holes 1a and 1b.

On the other hand, the side view shown in FIG. 5a and FIGS.
In the plan view shown in FIG.
There is an elongated hole 4b or 4 approximately in the middle that fits into the convex portion 1b.
c or a round hole 4d.

Then, the single-face head carriage 3 shown in FIG. 5a is fixed on top of the zero-face head carriage 1 shown in FIG. 4b, facing each other.

In the plan view shown in FIG. 6a, since the convex portion 1b is fitted into the elongated hole 4b, the single head carriage 3 cannot move in the direction of the arrow Y.

However, it can move in the direction of arrow X. Moreover, the rotation angle θ ₂ is set around the convex portion 1b as the rotation center.
You can also rotate it in any direction.

In Fig. 6a, the elongated hole 4b shown in Fig. 5b is
Although the configuration is shown as an example, it may be changed to the configuration shown in FIG. 5c or d.

That is, in the configuration shown in FIG.
cannot move in the direction of arrow X. However, it can move in the direction of arrow Y. Also,
It is also possible to rotate in the direction of rotational speed θ ₂ with the convex portion 1b as the rotation center.

Next, in the configuration shown in FIG. 5d, the convex portion 1b is tightly fitted into the round hole 4d, so that the single head carriage 3 cannot move in the directions of arrows X and Y.

However, the rotation angle θ ₂ with the convex portion 1b as the rotation center
You can rotate it in any direction.

In this way, by determining two or one of the mutually perpendicular movement directions (directions of arrows X and Y) and a predetermined rotation direction, the position adjustment of the one-sided head 2 becomes extremely easy.

For example, in the embodiment shown in FIG. 5b,
Assuming a center line l ₁ that passes through the gap g ₁ and the center of the elongated hole 4b, the one-sided head 5 is installed at an accurate installation angle with respect to the center line l ₁ in advance to eliminate the need for adjusting the gap deviation, and the remaining two Only the track position and azimuth adjustments need be made. next,
In the embodiment shown in FIG. 5c, the distance _l2 from the track part to the center of the elongated hole 4c is set accurately in advance, eliminating the need for track position adjustment, and the remaining two adjustments, namely azimuth and gap It is only necessary to adjust the deviation. Furthermore, in the embodiment shown in FIG. 5d, the mounting angle of the one-sided head 5 is set accurately in advance with respect to the center line _l1 passing through the gap _g1 and the center of the round hole 4d, and round hole 4d
By accurately setting the distance l ₂ to the center of the head in advance to eliminate the need for gear shift adjustment and track position adjustment, the remaining adjustment is by moving the single-plane head 5 in the rotation angle θ ₂ direction. All you need to do is adjust the azimuth. After the adjustment is completed, the mounting screw 6 is firmly tightened to fix it.

Effects As described above, the present invention has three position adjustments: azimuth adjustment, track position adjustment,
Since it is only necessary to adjust two or one of the gap deviation adjustments, the adjustment is easy, the time required for the adjustment is short, and the adjustment can be made accurately.
Therefore, writing and reading errors due to improper adjustment of the head mounting position can be prevented, and the reliability of the apparatus can be improved.

Further, according to the present invention, as shown in FIG. 4, since the convex portion is provided at approximately the middle position between the pair of fixing means, the support body can be made smaller and the adjustment space for this support body can be reduced. can.

[Brief explanation of drawings]

Figures 1 to 3 show conventional examples,
Figures 1a and b are a plan view and a side view, respectively, showing the mechanism on the head side of the 0th plane. Figures 2a and b are side views and plan views, respectively, showing the mechanism on the head side of the 1st plane.
Figures a and b are a plan view and a side view, respectively, showing the case where the 0-plane head and the 1-plane head are installed in opposing positions, and Figures 4 to 6 show embodiments of the present invention. , Figures 4a and 4b are a plan view and a side view showing the mechanism on the 0-plane head side, respectively, and Figure 5a is a
Figure 5b is a side view showing the mechanism on the head side.
d is a plan view showing different embodiments of the mechanism on the side of the 1st surface head, and FIGS. 6a and 6b are a plan view and a side view, respectively, showing the case where the 0th surface head and the 1st surface head are installed in opposing positions. , 1...0 side head carriage, 1a...screw hole, 1b...convex portion, 2...0 side head, 3...1
Surface head carriage, 4... leaf spring, 4a... mounting hole, 4b, 4c... oblong hole, 4d... round hole, 5...
...1 side head, 6...screw.

Claims (1)

[Scope of Claims] 1. A plurality of elongated supports that support a plurality of magnetic heads at one end of each of the magnetic heads facing each other, a convex portion protruding from the other end of one of the supports; an opening provided at the other end of the other support and fitting with the convex portion; and a pair of fixing means for fixing the supports at positions on both sides of the other end of the plurality of supports in the width direction. A magnetic head position adjusting device, wherein the opening and the convex portion are provided near a line connecting the respective fixing means.