JPH05258263A - Magnetic head holder - Google Patents

Abstract

PURPOSE:To make the working process easy, to decrease the number of processes required for adjusting, and to adjust accurately and rapidly. CONSTITUTION:This head holder has such a structure that adjusting points C, D of adjusting screws 17, 18, respectively, for a magnetic head 2 and the pressing point P of a flat spring 44 are arranged to deviate from each other in the perspective plane view almost perpendicular to the direction from the one side (pressing side) to the other side (adjusting side). Thereby, adjustment of the magnetic head (adjustment of gap position or azimuth) can be easily performed and can be performed without loosening fixing screws of the flat spring which is conventionally done.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head holder, and more particularly to a head holder having a function of adjusting the position and azimuth of the magnetic head.

[0002]

2. Description of the Related Art In order to reproduce magnetically recorded information or record information, as shown in FIGS.
The attached magnetic head 2 may be attached to the head holder 3 for use.

The magnetic head 2 has a pair of cores 5 and 6 arranged in a shield case 4 so that the gap 1 faces the opening 21 of the shield case 4. When the magnetic recording medium (not shown) slides on the core surface having the gap 1, both sides of the gap 1 are made of the same material (made of Sendust, for example) as the cores 5 and 6 in order to suppress wear of the head. Mask materials 7 and 8 are provided.

When attaching the magnetic head 2 to the head holder 3, it is necessary to align the gap 1 with the pair of mounting reference holes 9 and 10 formed in the head holder 3.
That is, since the center lines 11 and 12 of the reference holes 9 and 10 have been processed in advance so as to coincide with each other, these center lines and the gap 1 are matched, and thereby the head position and further the azimuth are adjusted.

In order to adjust the position of the head, a flat spring 14 is fixed to the holder body 3a by screws 15 and 16 on the opening side of the head mounting recess 13 formed in the holder body 3a of the head holder 3, and the holder body 3a is fixed. Adjustment screws 17, 18 for position adjustment are provided on the other side of 3a.

That is, with the head 2 inserted in the recess 13 of the holder body 3a, the flat spring 14 is screwed into the screw 1 as shown in the figure.
5 and 16 are fixed, and the flat springs 14 press the positions of both corners 4a and 4b of the head 2 (specifically, the shield case 4) to the right in FIG. Sandwich. Then, in order to adjust the position described above, the adjusting screws 17 and 18 are operated to adjust the screwing depth (fine adjustment).

However, in such an adjusting mechanism,
Pressing points (pressing points) A and B of the flat spring 14, which are supporting points for the head 2, and adjusting points C and D of the adjusting screws 17 and 18.
And and are substantially on the same lines 19, 20, so
It is very difficult to adjust the head position using only the adjusting screws 17 and 18.

That is, since points A and C and points B and D exist on the lines 19 and 20, respectively, the head 2 can be moved or rotated to the left in FIG. 7 by screwing the adjusting screw 17, for example. However, the pressing force of the flat spring 14 is directly resisted, and the screwing force of the adjusting screws 17 and 18 is not enough.

Therefore, in practice, the fixing screw for the flat spring 14 is
The adjustment screws 17 and 18 are adjusted so that the flat spring 14 can move while loosening 15 and 16. This is disadvantageous because the adjustment work is troublesome and the man-hours are increased.

[0010]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a holder in which the position adjustment work for attaching the magnetic head to the holder is easy and accurate and the number of steps can be reduced.

[0011]

That is, according to the present invention, a holder body for mounting a magnetic head, a pressing member for pressing the magnetic head from one side of the holder body, and the magnetic head on the other side of the holder body. In a magnetic head holder having an adjusting member for adjusting the mounting position of the magnetic head, the adjusting position of the adjusting member and the pressing position of the pressing member with respect to the magnetic head are substantially in the direction from the one side to the other side. The present invention relates to a magnetic head holder, which is offset from each other when viewed two-dimensionally in a direction orthogonal to each other.

[0012]

EXAMPLES Examples of the present invention will be described below. 1 to 3 show a first embodiment of the present invention.

The magnetic head holder 33 according to the present embodiment is
In particular, as shown in the drawing, the shape of the leaf spring 44 is not a flat plate shape as in the prior art, but its intermediate portion 44a is bent toward the head side in a curved shape, and is symmetrical with respect to the apex P of this bent portion. Is formed. In the present embodiment, parts common to those of the conventional example shown in FIGS. 7 and 8 are denoted by common reference numerals, and description thereof may be omitted.

As described above, since the intermediate portion 44a of the leaf spring 44 is bent in a curved shape, when the head 2 is attached to the holder 33 as shown in FIGS.
The apex P of the bent portion (intermediate portion) 44a of the leaf spring 44 is pressed linearly in the central portion of the side surface of the above.

The apex P is a pair of adjusting screws 1
With respect to the adjustment points C and D by 7 and 18, they are present at a substantially central position in plan view in the vertical direction orthogonal to these adjustment directions (that is, the horizontal direction in FIG. 1), and the pressing direction by the apex P is just present. Or adjusting lines 19 and 20 for pressure line 30
Will be arranged symmetrically.

Therefore, the head 2 is attached to the main body 33a of the holder 33.
Is inserted and the fixing screws 15 and 16 are tightened to fix the leaf spring 44 to the holder main body 33a, and at the same time, the center point of the side surface of the head 2 is pressed by the vertex P of the leaf spring 44 (for example, the spring pressure is about
1.96 Newton), with the head 2 fixed to the holder body 33a, position adjustment by the adjusting screws 17 and 18 can be easily realized.

That is, since the pressing point P by the leaf spring 44 exists between the two adjusting screws 17 and 18, for example, when the adjusting screw 17 is screwed in the direction of arrow 31 as shown in FIG. The head 2 itself receives a force that rotates counterclockwise about the apex (pressing point) P as a fulcrum. As a result, the head 2 rotates counterclockwise while elastically deforming the leaf spring 44 somewhat, as shown by exaggeratedly indicated by the one-dot chain line in accordance with the screwing force. When turned in the opposite direction, the head 2 rotates clockwise around the point P as a fulcrum).

The rotational force at this time is due to the moment proportional to the distance between the lines 19-30, and the force for moving the head 2 is smaller than that when the screwing force by the adjusting screw is directly applied (see FIG. 7). growing. Since such adjustment can be performed for one or both adjustment screws, the position of the head 2 can be accurately adjusted.

In this way, the position adjustment of the head 2 by the adjusting screw 17 (this can also be done with the adjusting screw 18) is facilitated, and the fixing screw 1 for the leaf spring as in the prior art.
Since work can be performed without loosening 5, 16, work is easy and the number of man-hours required for adjustment can be reduced. Also, the adjustment itself can be performed accurately and quickly.

The adjusting mechanism according to the present embodiment is as described above.
The position of the head 2, especially the gap 1 can be adjusted slightly so that the gap 1 is moved to 34, 35 while adjusting the head position to match the center lines of the reference holes 9 and 10, or the azimuth can be adjusted, and such adjustment is easy. It can be done accurately and is extremely useful.

The head holder 33 with the adjusting mechanism is
It can be used for various purposes, for example, for mounting a detection head for a bill or the like coated with magnetic paint.

4 and 5 show another embodiment of the present invention. In the case of this example, the leaf spring 44 for pressing the head 2 at the point P has basically the same shape as the above-mentioned example, but is characterized by the fixing structure to the holder main body 33a.

That is, the holder body 33a is formed with grooves 60 and 61 for receiving both ends of the leaf spring 44, and the leaf spring 44 is inserted after the head 2 is inserted into the recess 13 of the holder body 33a as described above. Drop both ends of into the grooves 60 and 61. At this time, the bent portion 44a of the leaf spring 44 elastically presses the head 2 at the point P, and the both ends of the leaf spring 44 are elastically pressed against the wall surfaces of the grooves 60 and 61 by this reaction force.

Therefore, even without using the fixing screw as in the above-mentioned example, the leaf spring 44 is in the state shown in the figure and is the holder main body 33a-.
It is firmly attached between the heads 2. Therefore, the number of parts is reduced by the amount of two fixing screws, and the number of steps for mounting the leaf spring is also reduced. The position of the head 2 is adjusted in the same manner as described in the above example.

FIG. 6 shows still another embodiment of the present invention. In each of the above-mentioned examples, the pressing point P of the leaf spring 44 is one place when viewed in plan, but in this example, it is two places P ₁ and P ₂ as shown.

The pressure points P ₁ and P ₂ by the leaf spring 44 are both
It is desirable to place the adjusting screws 17-18 in a symmetrical arrangement. Even if there are two pressurizing points in this way, for the same reason as described in the above-mentioned example, the head 2 can be easily supported by using the point P ₁ or P ₂ as a fulcrum when screwing the adjusting screw 17 or 18, for example. Since the head 2 can be rotated, the position of the head 2 can be easily adjusted.

Although the embodiments of the present invention have been described above, the above embodiments can be further modified based on the technical idea of the present invention.

For example, the position and number of pressing points (pressing points) by the leaf spring 44 described above may be various. In FIG. 1, the number of points P may be further changed, and in FIG. 6, the points P ₁ and P ₂ may be located outside the adjusting screws 17 and 18.

In addition to the leaf spring 44, an elastic pressing means having the same function can be adopted. Adjustment screw
The adjustment means for 17 and 18 may be changed. In addition, the shape and structure of the holder 33 may be variously changed.

The present invention can be applied to various magnetic heads other than those described above.

[0031]

As described above, according to the present invention, the adjusting position of the adjusting member and the pressing position of the pressing member with respect to the magnetic head are substantially in the direction from one side (pressing side) to the other side (adjusting side). Since the magnetic heads are offset from each other in a plan view in the orthogonal direction, a rotational force with the pressurizing position as a fulcrum is involved in the position adjustment of the magnetic head. Therefore, the position adjustment of the magnetic head (adjustment of the gap position, azimuth, etc.) becomes easy, and the work can be performed without loosening the fixing screw of the leaf spring as in the conventional case. Therefore, the work is easy and the adjustment is required. Man-hours can also be reduced. Also, the adjustment itself can be performed accurately and quickly.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing a state in which a magnetic head is attached to a holder according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing each part of the holder and a magnetic head separately.

FIG. 3 is a partially cutaway plan view for explaining a situation in which the position of the magnetic head is adjusted in the holder.

FIG. 4 is a partially cutaway plan view showing a state in which a magnetic head is attached to a holder according to another embodiment of the present invention.

FIG. 5 is a perspective view showing each part of the holder and a magnetic head separately.

FIG. 6 is a partially cutaway plan view showing a state in which a magnetic head is attached to a holder according to still another embodiment of the present invention.

FIG. 7 is a partially cutaway plan view showing a state in which a magnetic head is attached to a holder in a conventional example.

FIG. 8 is a perspective view showing each part of the holder and a magnetic head separately.

[Explanation of symbols]

1 ... Gap 2 ... Magnetic head 3, 33 ... Holder 3a, 33a ... Holder body 4 ... Shield case 5, 6 ... Core 9, 10 ... Mounting reference hole 11, 12 ・ ・ ・ Center line 14 ・ ・ ・ Flat spring 15, 16 ・ ・ ・ Fixing screw 17, 18 ・ ・ ・ Adjusting screw 19, 20 ・ ・ ・ Adjusting line 30 ・ ・ ・ Pressing line 44 ・ ・ ・ Leaf spring 44a・ ・ ・ Bent parts 60, 61 ・ ・ ・ Grooves P, P ₁ , P ₂ , A, B ・ ・ ・ Pressing points (pressing points) C, D ・ ・ ・ Adjusting points

Claims (1)

[Claims] 1. A holder main body for mounting a magnetic head, a pressing member for pressing the magnetic head from one side of the holder main body, and a mounting position of the magnetic head on the other side of the holder main body. In a magnetic head holder having an adjusting member, an adjusting position of the adjusting member with respect to the magnetic head and a pressing position of the pressing member are planar in a direction substantially orthogonal to a direction from the one side to the other side. A magnetic head holder characterized in that they are offset from each other.