JPS63124261A - Magnetic head device - Google Patents

Abstract

PURPOSE:To reduce displacement amounts of the important parts in proportion to the bending amount of supporting plates by balancing the flexibility of a recording and reproducing medium and the flexibility, pressing force of the supporting plates with their respective required relations, constituting bending in the direction of a carriage at the supporting plate and also making magnetic heads rollable. CONSTITUTION:The flexibility of the recording and reproducing medium 1 having the flexibility, the flexibilities of the supporting plates 6 and 10 for supporting the magnetic heads 5 and 9 are pressurizing force given to the magnetic heads 5 and 9 are balanced to their respective required relations. The supporting plates 6 and 10 are composed with the bending in the direction of the carriage and on the other hand the magnetic heads 5 and 9 are formed to be rollable by the bending condition which makes a virtual fulcrum respectively. In this way, even if the disk is bent or changed in height to cause the magnetic heads 5 and 9 to be tilted, the amount of displacement from the regular recording and reproducing position of the recording and reproducing medium, i.e., an off-track amount is regulated to be minimized in proportion to the bending amount of the supporting plates 6 and 10, thus improving the interchangeability of a magnetic recording device and obtaining a low-cost magnetic head device with high reliability.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic head device in a magnetic recording device.
More specifically, the present invention relates to a magnetic head mounting structure in which a magnetic head is mounted on a carriage that moves the magnetic head to a predetermined position.

[Prior Art] A conventional magnetic head grips a flexible recording/reproducing medium and applies a required pressing force to record/reproduce the medium.

an extremely thin support plate that supports the magnetic head and has flexibility;
A magnetic head comprising a carriage that is provided with a mounting surface on which the support plate is mounted, the magnetic head is mounted on the mounting surface via the support plate, and is moved to a predetermined position on the recording/reproducing medium. The device had a structure as shown in FIGS. 5 and 6.

Fig. 5 is a cross-sectional view of the main part of the magnetic head in a conventional magnetic head device, and Fig. 6 shows its behavior in detail, showing the radial positional deviation of the magnetic head with respect to a predetermined recording/reproducing position on the recording/reproducing medium. That is, it is an off-track explanatory diagram illustrating the off-track mechanism.

In FIG. 5, a first carriage 54, which is equipped with a moving means (not shown) and is movable in the direction of an arrow 62, is extremely thin and flexible and supports a first magnetic head 55. The second support plate 56 is mounted via the first support plate 56 . The first magnetic head 55 is mounted on the tf culture concave surface 54b.

The first support plate 56 is attached with an adhesive 5 as shown in the figure.
7 and is fixed to the mounting surface 54b so as to be wrapped around the mounting surface 54b.

On the other hand, it is rotatable facing the first magnetic head 55 (
A second carriage 58 (not shown) supported by the first carriage 54 (not shown) and movable in the direction of the arrow 62 depending on the second carriage 54 has a second magnetic field. The second support plate 60 supports the head 59 through an extremely thin and flexible second support plate 60.
The second magnetic head 59 is mounted on the mounting surface 58b on which the magnetic head 59 is mounted.
It is equipped with

The second support plate 60 is bonded with an adhesive 6 as shown in the figure.
1 and is fixed to the mounting surface 58b so as to be wrapped around the mounting surface 58b.

Regarding the flexibility of the above-mentioned first support plate 56 and second support plate 60, both are constituted by the portion indicated by the two-dot chain line in the figure, and the flexibility of the first support plate 56 is makes the first magnetic head 55 move in the direction of the arrow 63, but the movement in the direction of the first carriage 54 is approximately near the center of the first magnetic head 55, and the M first support The first magnetic head 55 is regulated by a first pivot 54a that is in contact with a plate 56, and the first magnetic head 55 is directionally limited as shown by an arrow 64, using the contact surface of the second pivot 54a as a fulcrum. It is possible to roll without

On the other hand, the flexibility of the second support plate 60 is similarly
The second magnetic head 59 is caused to move in the direction of the arrow 65, but the movement in the direction of the second carriage 58 is caused near the center of the second magnetic head 59 and toward the second support plate 6o. The second magnetic head 59 is regulated by the abutting second pivot 58a, and with the abutting surface of the second pivot 58a as a fulcrum, the second magnetic head 59 rolls without direction restriction, as shown by arrow 66, for example. is possible.

The first magnetic head 55 and the second magnetic head 59 are moved to the arrow 53 by rotational driving means (not shown).
The cartridge 52, which houses a disk 51 as a flexible recording and reproducing medium, is inserted through through holes 52a and 52b, respectively, to hold the disk 51 therein and to Recording and reproduction are performed by applying pressure (not shown).

The conventional magnetic head device described above has a number of drawbacks as described below, which require improvement.

l) the first support plate 56 as shown in FIG. 5 and described above;
is fixed to the mounting surface 54b, and the second support plate 60 is wrapped and fixed to the mounting surface 58b with an adhesive 57 and an adhesive 61, respectively.

On the other hand, the cartridge 52 has a standardized size, and as shown in FIG.
and a structure in which the first support plate 56 and the second support plate 60 are wrapped and fixed with adhesive 61,
The adhesive 57 and the adhesive 61 inevitably bulge toward the cartridge 52 as shown in FIG.
2 are brought so close together that the gap separating them from each other is reduced.

Therefore, as described above, the first carriage 54 and the second carriage 58 move in the direction of the arrow 62 to perform recording and reproduction, but when moving, even if the size of the cartridge 52 is small, the first carriage 54 and the second carriage 58 If there is a difference, the cartridge 52 and the adhesive 57 or the adhesive 61 will come into contact with each other, and the first magnetic head 55 and the second magnetic head 59 will sandwich the disk 51 and perform the required suppression. It has a fatal flaw in that when performing recording and reproducing by applying pressure, the pressing force changes and the original recording and reproducing function is lost.

In order to avoid the above-mentioned defects, (1) it is necessary to accurately control the amount of swelling of the adhesive 57 and the adhesive 61 described above.

■The first pivot 54 that comes into contact with the first support plate 56
The contact position of a is pushed to a required position, and the -th support F
i, 56 by regulating the deflection of the first magnetic head 55.
It is necessary to precisely regulate the location of

■A second pivot 58 that comes into contact with the second support plate 60
The position of the second magnetic head 59 must be accurately regulated by maintaining the contact position of the second magnetic head 59 at a desired position and regulating the deflection of the second support plate 60.

This required countermeasures such as these, making it expensive for stable mass production.

2) Next, as described above, the adhesive 57 and the adhesive 6
The first support plate 56 and the second support plate 60 are arranged so that the protrusion of the first support plate 56 and the second support plate 60 do not contact the cartridge 52.
As a means for preventing the deflection of the magnetic head 5, the first pivot 54a and the second pivot 58fL are configured, and the first magnetic head 5 is rotated using the contact surface of each pivot as a fulcrum.
5 and the second magnetic head 59 are rollable, and the disk 51 is sandwiched between the magnetic head 55 and the second magnetic head 59 for recording and reproducing. The behavior will be explained with respect to the recording/reproducing position of the magnetic head based on FIG.

As mentioned earlier, FIG. 6 is an off-track explanatory diagram illustrating the radial positional deviation of the magnetic head with respect to a predetermined recording/reproducing position of the recording/reproducing medium, that is, the off-track mechanism. It shows the behavior of the main parts in detail.

In FIG. 6, the first support plate 56 mounted and fixed on the aforementioned first carriage 54 and the second support plate 60 mounted and fixed on the aforementioned second carriage 58 are both The parts indicated by the two-dot chain lines in the figure constitute flexibility, and are respectively flexible.
8a and is supported by the first pivot 54a to restrict the deflection in the direction of each carriage.
The contact surface with the second pivot 58a is used as a fulcrum to enable rolling as shown in FIG. , in a state where the first magnetic head 55 and the second magnetic head 59 sandwich the disk 51, the flexibility of the disk 51 and the first support plate 56 and the second support plate are The first magnetic head 55 and the second magnetic head 59 are tilted and stabilized until the mutual balance of the flexibility of the magnetic head 60 is maintained.

By the way, in order to maintain data compatibility with magnetic recording devices,
The recording/reproducing position of the recording/reproducing medium is standardized and established, and in FIG.
x3. The recording/reproducing section of the second magnetic head 59 has a ΔX4
A deviation from the normal recording and reproducing position, that is, an off-track occurs, and if data is reproduced in this state, the amplitude of the reproduced signal will be lowered and correct reproduction will not be performed or reproduction will become impossible.

On the other hand, if data is recorded in this state and then reproduced by another normal magnetic recording device, the amplitude of the reproduced signal will be lowered and the reproduction will not be performed correctly, or reproduction will become impossible. This included a fatal defect in that the compatibility of the recording device 2 was lost, and the reliability of the magnetic recording device was significantly reduced.

[Problems and Objectives to be Solved by the Invention] As mentioned above, the conventional technology has a number of problems, and in particular, there are fatal quantitative problems such as complete loss of compatibility as a magnetic recording device. In the t8 system, the deflection of the extremely thin and flexible support plate supporting the magnetic head is supported by a pivot, and the height of the disk as a recording/reproducing medium changes, for example. When the magnetic head is tilted due to bending or bending, the recording/reproducing section of the magnetic head has a large amount of off-track from the normal recording/reproducing position of the recording/reproducing medium, and the compatibility of the magnetic recording device is affected. It was reducing sex.

SUMMARY OF THE INVENTION The present invention is intended to solve these problems, and its purpose is to simplify the structure so that even if the height of the disk used as a recording/reproducing medium changes or bends, the magnetic Even if the head is tilted, the above-mentioned off-track amount is restricted to a small value to improve the compatibility of the magnetic recording device, and to provide an inexpensive and highly reliable magnetic head device.

[Means for solving the problem of m points] A magnetic head that holds the flexible recording and reproducing medium of the present invention and performs recording and reproducing by applying a required pressing force.

An ultra-thin support plate that supports the magnetic head and has flexibility, a mounting surface on which the support plate is mounted, and the magnetic head is mounted on the mounting surface via the support plate. In a magnetic head device comprising a carriage that moves the recording/reproducing medium to a predetermined position, flexibility of the recording/reproducing medium and flexibility of the support plate are important.

The pressing forces are balanced in a required relationship, and the support plate deflects in the direction of the carriage, and in the deflected state forms a virtual fulcrum at a position substantially flush with the mounting surface, and It is characterized by a structure that allows the head to roll.

[Function] According to the above configuration of the present invention, even if the magnetic head rolls, the amount of displacement of the main part of the magnetic head mounted at a predetermined position on the recording/reproducing medium is determined by the amount of deflection of the support plate. Correspondingly, they are subject to less regulation.

〔Example〕

FIGS. 1, 2, and 3 show a magnetic head, an M magnetic head, which supports a flexible recording/reproducing medium of the present invention and performs recording/reproducing by applying a required pressing force. Equipped with an ultra-thin flexible support plate and a mounting surface on which the support plate is mounted,
FIG. 4 shows the most suitable embodiment of a magnetic head device comprising a carriage in which the magnetic head is mounted on the mounting surface via the support plate and moved to a predetermined position on the recording/reproducing medium. It is a figure which shows the other application example of.

FIG. 1 is a sectional view of a main part of a magnetic head in a magnetic head assembly according to the present invention, and FIG. 2 is a partial plan view of the main part.

FIG. 3 is an off-track explanatory diagram showing the behavior in detail and explaining the radial positional deviation of the magnetic head with respect to a predetermined recording/reproducing position of the recording/reproducing medium, that is, the off-track mechanism.

In FIG. 1, a first carriage 4, which is equipped with a moving means (not shown) and is movable in the direction of arrow 12, is extremely thin and flexible and supports a first magnetic head 5. The first magnetic head 5 is mounted via the first support plate 6 on the mounting surface 4b on which the second support plate 6 is mounted.

On the other hand, the first carriage 4 has a space 4a having a required gap with the first support plate 6 in a part of the mounting surface 4b.
and the first support as shown in FIG. 2 from the space 4a (FIG. 2 is a partial plan view of the first magnetic head 5 and the first support plate 6). A wall 4C having a required height in the direction of the first support plate 6 is constructed so as to surround the outer periphery of the plate 6, as shown in FIG.

Then, as shown in FIGS. 1 and 2, the space 4a is filled with an adhesive 7, and the first support plate 6 is attached to the mounting surface 4.
It is fixed to the mounting surface 4b from the direction b, and the wall 4C
constitutes an adhesive leakage prevention means for preventing the adhesive 7 from flowing out.

On the other hand, in FIG. 1, it is rotatable (not shown) facing the first magnetic head 5, and is supported by the first carriage 4 (not shown) and rotates in the direction of the arrow 12. The second carriage 8, which is movable depending on the second carriage 51, supports the second magnetic head 9 via an extremely thin and flexible second support plate 10. , the second magnetic head 9 is mounted on the lv mounting surface b on which the second support plate 10 is mounted.

On the other hand, the second carriage 8 has a space 8 having a required gap with the second support plate 1o in a part of the mounting surface 8b.
af, and as shown in FIG. 2 and described above, the second supporting plate 10 is surrounded from the space 8a to the outer periphery of the second support plate 10 as shown in FIG. A wall 8C having a required height in the direction of the support plate 1o is constructed.

The second support plate 10 is fixed to the mounting surface 8b from the direction of the mounting surface 8b by filling the space 8a with an adhesive 11 as shown in FIG. This constitutes an adhesive leakage prevention means for preventing the adhesive 11 from flowing out.

The flexibility of the first support plate 6 and the second support plate 10 is determined by the portions indicated by two-dot chain lines in the figure. The flexibility allows the first magnetic head 5 to move in the direction of arrow 13, and also allows rolling without any direction restriction, as shown by arrow 14, for example.

On the other hand, the flexibility of the second support plate 10 is similarly determined by
The second magnetic head 9 can be moved in the direction of the arrow 15, and can be rolled without direction restriction as shown by an example in the arrow 16.

And the first rif! The L magnetic head 5 and the second magnetic head 9 are rotated in the three directions of arrows by a rotary drive means (not shown), and are attached to a car I ridge 2 containing a disk 1 as a flexible recording/reproducing medium. The disc 1 is inserted through the provided through-holes 2a and 2b, respectively, and the disc 1 is held between the discs 1 and 1, and recording and reproduction are performed by applying the necessary suppression (not shown).

The magnetic head mounting structure in the magnetic head device of the present invention described above has been improved in the following manner.

1) The fixation structure of the first support plate 6 and the second support plate 10 will be explained, but since both of the fixation structures are similar, the explanation will focus on the fixation structure of the first support plate 6. The explanation of the fixing structure of the second support plate 10 will be omitted.

As shown in FIG. 1 and described above, a space 4a having a required gap with the first support plate 6 is formed in a part of the mounting surface 4b of the first carriage 4, and a space 4a is formed as a means for preventing adhesive from flowing out. A wall 4C having a required height in the direction of the second support plate 6 is constructed so as to surround the outer periphery of the first support plate 6 from the space 4a, and the space 4a is filled with an adhesive 7. When the first support plate 6 is configured to be fixed to the mounting surface 4b from the direction of the mounting surface 4b, the adhesive 7 moderately penetrates into the space 4a by capillary action, while the space 4a is As shown in FIG. 1, in the portion located further outside from the outer periphery of the first support plate 6,
On the one hand, the wall 4 is constructed as a means for preventing the above-mentioned adhesive from flowing out due to the surface action. c. On the other hand, the adhesive 7 is drawn along the outer circumferential portion of the first support plate 6, and the adhesive 7 prevents itself from rising, but rather forms a depression for bonding.

Regarding the configuration of the space 4a having a required gap with the first support plate 6, for example, (0.05 mm) to (0.05 mm).
, 3 mm), an anaerobic adhesive is effective as the adhesive 7, and the workability and reliability of the adhesive are significantly improved.

Regarding the adhesive strength of the adhesive structure, the space 4a
Sufficient strength is ensured by the adhesive 7 filled in the space 4a, and the space 4a is located further outward from the outer periphery of the first support plate 6, and the adhesive 7 acts on the surface of the support plate 6. The adhesive 7 prevents swelling by itself, and rather forms a recess in the area to be bonded, where the adhesive 7 does not play an active role in terms of adhesive strength. Wall 4C (not only functions to prevent soil and adhesive from flowing out, but also functions as an adhesive filling buffer means to absorb variations in the filling amount of the adhesive 7 and achieve stable adhesion) It also fulfills the following.

Regarding the configuration of the aforementioned wall 4C, in FIG. 2, it is constructed in a continuous structure so as to surround the outer periphery of the first support plate 6, and when filling with the adhesive 7, the wall 4C is placed at a desired position. If the required amount is filled into the space 4a, the capillary action described above will adequately penetrate into the space 4a, resulting in highly reliable bonding, and the workability of bonding will also be significantly improved.

On the other hand, regarding the structure of the waist wall 4C, it is not a continuous structure that surrounds the outer periphery of the first support plate 6 as shown in FIG. 2, but may be arranged at important points (not shown). The adhesive has the ability to prevent the adhesive from flowing out and the adhesive filling buffer function, and highly reliable adhesion is achieved. It should also be noted that filling in item 7 can be easily performed by means such as multi-point filling.

As described above, according to the above-described fixing structure of the first support plate 6 and the second support plate 1O, the adhesive 7 and the adhesive 11 do not swell, and are highly reliable and stable. 2 can be easily carried out, and the adhesive 7
As shown in FIG. 1, a sufficient gap is secured between the adhesive 11 and the cartridge 2, which is made up of the above-mentioned standardized size, and the first carriage 4 and the above-mentioned first carriage 4, as shown in FIG. The second carriage 8 performs recording and reproduction by moving in the direction of the arrow 12 shown in FIG. , the cartridge 2 and the adhesive 7 or the adhesive 11 do not come into contact with each other.

When a required pressing force is applied to the state where the first magnetic head 5 and the second magnetic head 9 sandwich the disk l, the behavior in the direction of arrow 13 and the rolling in the direction of arrow 14 described above are possible. The first support plate 6 having flexibility and the second support plate IO having flexibility capable of movement in the direction of arrow 15 and rolling in the direction of arrow 16 are as shown in FIG. The first support plate 6 is bent approximately in the direction of the second carriage 4, and the second support plate 10 is bent approximately in the direction of the second carriage 8 to balance the pressing force.

Incidentally, the first support plate 6 is configured in a known shape as shown in the second @', and the flexibility of the second support plate 6 is configured in the X-axis and Y-axis in the figure, respectively. With the tie bar 6x and tie bar 6y, the arrow 14 shown in FIG.
rolling in the direction shown in FIG. 2 by arrows 14x and 14y, and by a plurality of arms 6a including the tie bars 6X and 6y and connected to a portion of each tie bar, as shown in FIG. The tie bar 6x constitutes the behavior in the direction of the arrow 13.
When the widths of the tie bar 6y and the arm 6a are configured at a required ratio, the rolling in the direction of the arrow 14 and the behavior in the direction of the arrow 13 can be easily configured with a rigidity ratio corresponding to the width configured at the required ratio. It is something that

Although this explanation has been made with reference to the first support plate 6, the second support plate 10 also has a completely similar configuration and will not be described here. As mentioned above, the flexibility of the second support plate 10 is determined by the tie bar 6x, the tie bar 6y, and the arm 6a (the second support plate 10 is not shown for convenience of explanation, the tie bar 10X, the tie bar 10y, and the arm 10a, respectively). )
The width formed by the first support plate 6 is configured in a required ratio, and the first support plate 6,
the second support plate 10 and the adhesive 7. Said adhesive 1
1 and the aforementioned cartridge 2 are constructed so that they do not come into contact with each other, and the structure allows the original recording and reproducing function to be performed without any change in the pressing force during recording and reproducing.

And above! l! According to the precept, (1) The adhesives 7 and 11 described above do not cause swelling and enable highly reliable and stable adhesion, and when filling the adhesives 7 and 11, it is possible to There is no need for detailed management, and the workability of adhesion is good, making it suitable for mass production.

(2) The first support plate 6 and the second support plate 10 balance the pressing force as shown in FIG. 1 with their own rigidity, so that the disk l and the first magnetic head 5 and the second magnetic head 9, there is no need to configure delicate conditions at various locations,
It's easy.

These improvements have made it possible to achieve high reliability, stable mass production, and easy and inexpensive construction.

2) Next, as detailed in 1), the adhesive 7 and the adhesive 11 are prevented from swelling, and the first support plate 6 is
is bent approximately in the direction of the second carriage 4, and the second support plate 10 is bent approximately in the direction of the second carriage 8, so that the first magnetic head 5 and the second magnetic head 9 The behavior of the magnetic head, which is possible due to the structure in which recording and reproducing is performed while holding the disk 1, will be explained with reference to FIG. 3 with regard to the recording and reproducing position of the magnetic head.

As mentioned earlier, FIG. 3 is an off-track explanatory diagram illustrating the radial positional deviation of the magnetic head with respect to a predetermined recording/reproducing position of the recording/reproducing medium, that is, the mechanism of off-I rack. The behavior of the main parts in Fig. 2 and Fig. 2 is shown in detail.

In order to make the explanation easier to understand, the behavior of important parts is exaggerated in the illustration.

In FIG. 3, 1fal is applied to the first carriage 4 mentioned above.
The first support plate 6, which is fixed on the second carriage 8, and the second support plate 10, which is mounted on TFr and fixed on the second carriage 8, both have flexibility in the part shown by the two-dot chain line in the figure. Specifically, as shown in FIG. 1 and described above, when a required pressing force is applied to the state where the first magnetic head 5 and the second magnetic head 9 sandwich the disk 1, the arrow shown in FIG. The first support plate 6 has flexibility that allows behavior in the direction of arrow 13 and rolling in the direction of arrow 14, and the second support plate has flexibility that allows behavior in the direction of arrow 15 and rolling in the direction of arrow 16. As shown in FIG. 1, the support plate 10 is bent approximately in the direction of the first carriage 4, and the second support plate 10 is bent approximately in the direction of the second carriage 8. balance with the pressing force.

However, if the height of the disk 1 changes or bends, for example, the first magnetic head 5 and the second magnetic head 9 sandwich the disk 1, and as shown in FIG. The first magnetic head 5 and the second magnetic head 5 are rotated until a balance is maintained between the flexibility of the disk l and the flexibility of the first support plate 6 and the second support plate 10°. The magnetic head 9 is tilted and stabilized.

By the way, as mentioned above in the conventional magnetic recording device, in order to maintain data compatibility, the recording/reproducing position of the recording/reproducing medium is standardized and defined, and in FIG. The recording/reproducing position and the recording/reproducing part of the first magnetic helad 5 are ΔX1. The recording/reproducing section of the second magnetic head 9 will deviate from the normal recording/reproducing position by an amount indicated by ΔX2, that is, off-track. Paying attention to the inclination of the first support plate 6, the first support plate 6 is bent approximately in the direction of the second carriage 4, and is in balance with the above-mentioned pressing force, and in this balanced state, the first magnetic head 5 is When tilted, the tilting mechanism is caused by the mounting surface 4b configured on the first carriage 4.
Tilt by configuring a virtual tilt fulcrum P1 that is substantially on the same plane as the mounting surface 4b and exists on a virtual line connecting the mounting surface 4b,
Assuming that the inclination angle θ1 of the first magnetic head 5 is the same, the greater the amount of deflection of the first support plate 6 approximately in the direction of the -th carriage 4, the greater the off-track amount. ΔX1 will be a small amount.

(2) Similarly, the second support plate 10 is bent approximately in the direction of the second carriage 8 and is balanced with the pressing force described above, and when the second magnetic head 9 is tilted in this balanced state,
The tilting mechanism is located approximately on the same plane as the mounting surface 8b formed on the second carriage 8, and
If a virtual inclination fulcrum P2 existing on an imaginary line joining The greater the amount of deflection of the second carriage 8 in the direction, the smaller the off-track amount ΔX2 becomes.

As mentioned above, the first support plate 6 is bent approximately in the direction of the second carriage 4, and the second support plate 10 is bent approximately in the direction of the second carriage 8, so that the above-mentioned push The first 1lr1 air head 5 in equilibrium with the pressure
In the structure in which the second ILa magnetic head 9 is inclined, the positional deviation in the radial direction of the magnetic head with respect to a predetermined recording/reproducing position of the disk 1 as a recording/reproducing medium, that is,
Compared to the conventional magnetic head device in which the deflection of the first support plate 6 and the second support plate 10 in the direction of the carriage is restricted by a pivot or the like described above, It is a much smaller quantity, and even if data is reproduced in this state, the amplitude of the reproduced signal will only decrease significantly, and the effect on the reproduction function can be ignored.

On the other hand, even if data is recorded in this state and the data is reproduced using another normal magnetic recording device, the amplitude drop in the reproduced signal will be slight and the effect on the reproduction function can be ignored. This makes the compatibility of magnetic recording devices extremely stable.

The structure in which the first support plate 6 is deflected approximately in the direction of the second carriage 4 and the second support plate 10 is deflected approximately in the direction of the second carriage 8 is as follows:
As mentioned above, it has been explained that the structure can be configured by preventing the adhesive 7 and the adhesive 11 from swelling.
For example, a structure (not shown) in which the first support plate 6 and the second support plate 10 are fixed by bonding means such as thermal welding or welding can be easily constructed, and the same function can be achieved. It goes without saying that you can get it.

Furthermore, the above explanation relates to the inclination of the first magnetic head 5 and the second magnetic head 9, and the radial positional deviation of the magnetic head with respect to a predetermined recording/reproducing position of the disk 1 as a recording/reproducing medium, that is, Although the directions involved in off-track have been described, as described above in FIG. To explain this by replacing the directionality with the inclination in the rotational direction of the disk 1 as a recording/reproducing medium, the inclination in the rotational direction of the disk 1 causes the first magnetic head 5 and the second magnetic head 9 to move in the rotational direction. However, according to the above structure, the amount of change in the timing of the recording regeneration signal is small, similar to the amount of off-track described above, and the recording and playback timing changes. The influence on the a-performance can be ignored, and the compatibility of the magnetic recording device is made extremely stable.

3) As shown in FIGS. 1 and 3 and described above, the first support plate 6 extends approximately in the direction of the -4 carriage, and the second support plate 10 extends approximately in the direction of the second carriage 8. In the structure in which the bending force is equalized to the pressing force t97 described above, the first support plate 6 and the second support plate 10 each have elasticity in the bending direction, for example. The magnetic recording device is subject to severe vibrations and shocks! Even if disturbances such as vibrations and shocks are encountered, the supporting plate is supported by a pivot and the behavior of the supporting plate is not restricted as in the conventional example shown in Fig. fjS5 and described above. It does not propagate the behavior of the mechanical parts, but rather has a damping effect against disturbances such as vibrations and shocks, and not only protects the first magnetic head 5 and the second magnetic head 9. This also protects the disk 1 as a recording/reproducing medium and prolongs its life.

Naturally, the above structure has the above-mentioned vibrations and places! i!
It not only acts as a damper against disturbances such as
As shown in the figure and described above, when the disk 1 is held between the first magnetic head 5 and the second magnetic head 9, it also acts as a damper to alleviate the mutual collision that occurs at the moment of the holding. Needless to say, it is possible to accomplish this.

Next, another application example of the present invention will be explained based on FIG. 4.

FIG. 4 shows another example of application of the present invention, and is a detailed view of the main parts of the fixing part.

This application example has a structure that is exactly the same as that shown in FIGS. 1, 2, and 3 and described above, except for the parts shown in the detailed drawing of the main fixing part in FIG. 4. , which exhibits similar functions and obtains similar effects, and will not be explained here.

The structure of the main fixing part explained in FIG. 4 will be explained by referring to a part of the solder, but the fixing debris is shown in FIGS. This applies to the fixation of

In FIG. 4, a first carriage 34, which is equipped with a moving means (not shown) and is movable, is a flexible pole 4 that supports a first magnetic head (not shown). The first magnetic head is mounted on the mounting surface 34b on which the second support plate 36 is mounted via the first support plate 36.

On the other hand, the first carriage 34 has the mounting surface 34b
As shown in FIG. A space 34d has a larger gap than the space 34a.

The first support plate 36 has a hole 36a at a required position facing the space 34a or the space 34d, and is connected to the space 34a and the space 34d through the hole 36a as shown in FIG. The mounting surface 34b is fixed to the mounting surface 34b by filling with an adhesive 37.

When constructed with the fixing structure as described above, the fixing structure shown in FIGS.
Similar to the content described above in the figure, the adhesive 37 moderately penetrates into the space 34a due to capillary action, while in the space 34d, as shown in FIG. On the first support plate 36,
On the other hand, from the space 3.1d to the first support plate 3
The adhesive 3 is drawn along the wall 34c extending in six directions.
7 can prevent the bulge by itself, and rather form a recess for bonding.

And adhesion 9 of the adhesive structure! Regarding the degree, sufficient strength is ensured by the adhesive 37 filled in the space 34a, and the space 34d mentioned in rγ1,
The adhesive 37 prevents itself from rising due to the action of surface tension, and rather forms a depression in the bonded area, where the adhesive 37 does not play a positive role in terms of adhesive strength. As a function, in order to absorb the filling variation of the adhesive 37 and achieve stable adhesion, as shown in Fig. 1,! It functions as an adhesive filling buffer means similar to that described above in Figure 2.

[Effects of the Invention] As described above, the present invention has many of the practical effects described above among the embodiments of the present invention, and in particular, the m-air head device of the present invention has flexibility. The flexibility of the recording/reproducing medium having the magnetic head, the flexibility of the flexible support plate that supports the magnetic head, and the pressing force applied to the magnetic head holding the recording/reproducing medium between them are all in the required relationship. The support plate is balanced and has a structure in which the supporting plate is deflected and forms a virtual fulcrum in the deflected state to enable the magnetic head to roll. Even if the height of the magnetic head changes or bends, causing the magnetic head to tilt, the main part of the magnetic head, that is, the recording and reproducing section, will not be able to maintain the amount of deviation from the normal recording and reproducing position of the recording and reproducing medium, that is, off-track. The amount of deflection of the support plate is reduced in accordance with the amount of deflection of the support plate, thereby improving compatibility with the magnetic recording device and providing an inexpensive and highly reliable magnetic head device. The effect is extremely large.

[Brief explanation of the drawing]

1, 2, and 3 show one of the most suitable embodiments of the magnetic head device of the present invention, and FIG. 4 shows another example of application of the present invention. FIG. 1 is a sectional view of the main part of a magnetic head in a magnetic head device of the present invention, and FIG. 2 is a partial plan view of the main part in a partial plan view. FIG. 3 is an explanatory diagram of the off-track. FIG. 4 shows another application of the present invention and is a detailed view of the main fixing parts. 5 and 6 are diagrams for explaining the conventional example, and FIG.
This figure is a sectional view of the main part of a magnetic head in a conventional magnetic head device, and FIG. 6 is an explanatory diagram of off-track. 1. Disc 2. Cartridge 4.
, , , , first carriage 4a, 8a , , , ,
,,,Space 4b, 8b, , ff mounting surface 4c, 8c, ,,,,, Wall 5, ,,,,,
, , , , First magnetic head 6 , , , , , , , ,
,,first support plate 7.11. , , , , , , Adhesive 8 , , , , , , , , Second carriage 9 , ,
, , , , , , , Second magnetic head 10 , , , , , ,
,,,,Second support plate and above Figure 1 Figure 1 Gate Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1) A magnetic head that sandwiches a flexible recording/reproducing medium and applies a required pressing force to record/reproduce information, and an extremely thin flexible support that supports the magnetic head. In a magnetic head device comprising a plate, a mounting surface on which the supporting plate is mounted, the magnetic head is mounted on the mounting surface via the supporting plate, and a carriage is moved to a predetermined position on the recording/reproducing medium. The flexibility of the recording/reproducing medium, the flexibility of the support plate, and the pressing force are each balanced in a required relationship, and the support plate deflects in the direction of the carriage, and 1. A magnetic head device characterized in that the magnetic head device is configured to have a structure in which a virtual fulcrum is formed at a position substantially flush with the mounting surface, and the magnetic head can be rolled. 2) The magnetic head device according to claim 1, wherein the support plate has an elastic structure in the deflection direction.