JPS6387668A - Magnetic recorder - Google Patents

Abstract

PURPOSE:To reduce a cost and to improve the reliability by integrating a second carriage principal part, which has a means to eliminate the flexibility and forms a rigid body, and a turning means consisting of the flexibility of a very thin plate-shaped metallic material provided with a projecting part. CONSTITUTION:Suspensions 4a and 4b consisting of the plate-shaped metallic material, which is very thin to have 0.05-0.3mm thickness and has the flexibility, and each of which has the flexibility in one end are constituted. An upper carriage 4 as a second carriage on which a projecting part 4c is constituted as a means, which improves the rigidity of the very thin plate-shaped metallic material having the flexibility to eliminate the flexibility of parts other than suspensions 4a and 4b, in the position to which the suspensions 4a and 4b are supported at both sides is fixed to a lower carriage 7 by a screw 13 with suspensions 4a and 4b between them to obtain an integrated structure. The upper carriage 4 constitutes the turning means with the flexibility of suspensions 4a and 4b. Thus, the cost is reduced and the reliability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head feeding device in a magnetic recording device, and more specifically, a first magnetic head feeding device having a rotating means that is rotatable opposite to a first magnetic head. Regarding the second carriage structure.

[Prior Art] A first carriage that is equipped with a conventional moving means, has a first magnetic head mounted thereon, and moves in accordance with the articulation of a moving drive means.

A holding element is carried by a holding means carried by the first carriage and holds a medium for recording and reproducing together with the first magnetic head, and the holding element rotates opposite to the first magnetic head. a second carriage with possible pivoting means;

A magnetic recording apparatus comprising a pressing means for pressing the second carriage to bring the first magnetic head, the medium, and the holding element into close contact with each other in the required relationship is shown in FIGS. The structure was as shown in FIGS. 12 and 13.

FIG. 10 is a sectional view of the main part of a carriage in a conventional magnetic recording device, and FIG. 11 is a perspective view of the main part.

In FIGS. 10 and 11, a motor 51 for chucking the disk 52 and rotating it in the direction of an arrow 63 is fixed to a frame 59;
holds a guide shaft 60 as a guide means.

A lower carriage 57 as a first carriage is equipped with a moving drive means (not shown) and has a lower head 58 as a first magnetic head mounted thereon via, for example, a flexible lower gimbal 58a. , is guided by the guide shaft 60 and moves along the arrow 62.
It has a structure that slides in the direction.

On the other hand, an upper head 53 as a second magnetic head is mounted, for example, via an upper gimbal 53a having flexibility.
An upper carriage 54 as a second carriage made of, for example, a plastic material is integrally connected to a flexible suspension 56 made of, for example, stainless spring steel. The lower head 58 and the upper head 53 have a structure in which the disk 52 is held between them. The upper carriage 54 is moved by the lower head 58 due to the flexibility of the suspension 56.
It has a structure that allows it to rotate in opposition to the

On the other hand, a spring 55 is disposed as a means for pressing the lower head 58 and the upper head 53 into a state where the disk 52, which is a medium for recording and reproduction, is held between them.
The spring support 66 supports the support on the one hand, and presses the upper carriage 54 on the other hand.

Regarding the structure of fixing the upper carriage 54 to the lower carriage 57 via the aforementioned suspension 56, as shown in FIG.
A suspension 56 is interposed between them and fixed by the screws 67, and the screws 67 are fixed by setting the relative positional relationship between the lower head 58 and the upper head 53 to a predetermined positional relationship. The position is fixed.

The upper carriage 54 is provided with a shield material 61 for protecting the upper head 53 and the lower head 58 from, for example, external noise.

In order to achieve the purpose, the shielding material 61 has a convex portion with a required surface area and a required thickness.Of course, the wider the surface area and the thicker the shielding effect, the more effective the shielding effect will be. .

The second carriage structure, which has a rotating means that can rotate opposite the first magnetic head in the conventional magnetic recording apparatus described above, requires a number of improvements as described in f.

1) In FIG. 11, the disk 52 is indicated by an arrow 65.
When the disk 52 rotates in this direction, the disk 52 is held between the lower head 58 and the upper head 53 as described above in FIG. , the two heads exhibit stick-slip behavior, the suspension 56 receives a torsional moment, and the upper carriage 54 vibrates slightly in the direction of the arrow 64 shown in FIG. A slight vibration similar to the direction of rotation of 52 is repeated.

In other words, the upper head 53 causes a relative displacement in the circumferential direction with respect to the recording/reproducing position of the disk 52,
In other words, the recording/reproducing timing becomes unstable, which poses a problem in increasing the capacity of the magnetic recording device.

2) will be explained based on FIGS. 12 and 13.

12 and 13 are detailed sectional views of main parts of a carriage in a conventional magnetic recording device, in which the upper carriage 54
FIG.

In FIGS. 12 and 13, the upper carriage 54
As described above with reference to FIG. 10, one end is fixed to the lower carriage 57 via the suspension 56,
On the other hand, the upper head 53 is in contact with the lower head 58 via the disk 52, and when the above-mentioned spring 55 presses the upper carriage 54, the suspension 56 is moved as shown in FIG. It deforms into a roughly arched shape.

On the other hand, the upper carriage 54 is provided with the shield material 61 as described above in FIG.
In order to achieve the purpose of 1, as mentioned above, the wider the surface area and the thicker the structure, the more effective the shielding effect will be. , the suspension 5 shown in FIG.
The degree of the substantially arcuate deformation 6 varies depending on the mass of the upper carriage 54 including the shield material 61.

Further, the substantially arcuate deformation of the suspension 56 that deforms in response to external disturbances such as vibrations and shocks described above also constitutes a substantially arcuate deformation as shown in FIG. 12 in the opposite direction from FIG. 13. In other words, the change in the substantially arcuate deformation of the suspension 56 means that the suspension 56 described above changes.
6 is fixed with the screw 67 to the upper head 53.
This causes a radial positional deviation, that is, an off-track, with respect to the recording/reproducing position of the disk 52, which may impede the ability to increase the capacity of a magnetic recording device or prevent magnetic recording. It also has fatal flaws such as loss of compatibility of media between devices.

Furthermore, when the suspension 56 is deformed into a substantially arcuate shape as shown in FIGS. 12 and 13, the upper head 53 and the disk 52 are
．． Is the lower head 58 incapable of mutual contact with a gap of only a few microns, that is, worsening the head touch and making even recording and reproduction impossible?
Ta.

3) In order to maintain data compatibility, magnetic recording devices standardize and specify the recording/reproducing position of the medium, and in particular, the relative positional relationship between the lower head 58 and the upper head 53 has strict default values. Positional accuracy, and mutual positional adjustment is delicate.

However, in the conventional structure shown in FIG. 10 and described above, there is a lack of effective means for adjusting the position.If I had to point out, the above-mentioned screw 67 should be temporarily tightened with the required tightening torque, and the above-mentioned suspension engine 56 should be temporarily tightened. is placed between the lower carriage 57 and the spring receiver 66 to form a moderately movable state, for example, the upper carriage 54 -.
After partially energizing the suspension 56 to move and adjusting the relative positional relationship between the lower head 58 and the upper head 53 to a desired position, tighten the screw 67 again to the required tightening torque. It was to be tightened and fixed in place.

Incidentally, as the absolute position reference for the position adjustment, a required signal recorded on the disk 52 is used as a reference, and while tracking and reproducing the signal with the lower head 58 and the upper head 53, the required relative positional relationship is adjusted. This is to adjust the position.

However, as described above, the suspension 56 is flexible, and as described above, it is compressed between the lower carriage 57 and the spring receiver 66, and biases a portion of the upper carriage 54 to move. Then, when the suspension 5G is moved, the → displacement John 56 becomes as follows.
The upper carriage 54 remains under stress due to bending or buckling.
When the movement urging force applied to a part of the upper carriage 54 is released, the stress is released, but on the other hand, as the stress is released, the upper carriage 54 returns to its position in a direction that resists the movement urging force. , a difference from the desired position will occur, and the above-mentioned position adjustment of the required relative positional relationship between the lower head 58 and the upper head 53 requires a lot of effort and effort to correct the difference from the desired position. This required an immeasurable amount of time.

As mentioned above in 4) and 3), the required signal recorded on the disk 52 is used as the absolute position reference for adjusting the relative positional relationship between the lower head 58 and the upper head 53 to a desired positional relationship. , while tracking and reproducing the signal with the lower head 58 and the upper head 53 respectively, the position is adjusted to the required relative positional relationship, and as a matter of course, the signal is reproduced stably. Therefore, the upper head 53. The disk 52. The lower head 58 is
For example, in order to ensure mutual contact that does not allow even a gap of a few submicrons, that is, good head touch, the lower head 58 and the upper head 53 are held in a state in which the disk 52 is held between them by the spring 55 as described above. Pressure-If
In this configuration, the spring receiver 66 is lifted up by the reaction force of the spring 550, and 3)
The above-mentioned suspension 56 is attached to the lower carriage 5.
It is not easy to compress the upper carriage 54 between the upper carriage 7 and the spring receiver 66 so that the upper carriage 54 is properly movable. After the suspension 56 is moved and the relative positional relationship between the lower head 58 and the upper head 53 is adjusted to the desired position, the screw 67 is tightened with the required torque to fix the position. The above-mentioned suspension 56 is connected to the lower carriage 57 and the spring receiver 6.
In other words, the position of the upper carriage 54, that is, the upper head 53 has changed, and the positions of the lower head 58 and the upper head 53, which have been adjusted in position, have changed. This causes a change in the relative positional relationship, and as in 3) above, the lower head 58
As mentioned above, adjusting the required relative positional relationship between the upper head 53 and the upper head 53 requires a lot of effort and effort, and takes an immeasurable amount of time. The second carriage structure, which has a rotating means that can rotate in opposition to the first magnetic head, has a number of inherent problems, which not only affect the reliability of the magnetic recording device, but also pose problems in the mass production process. It made it impossible to automate the process and was expensive.

[Problems to be Solved by the Invention 1] As mentioned above, the conventional technology has many problems, especially fatal problems such as complete loss of compatibility as a magnetic recording device. The second carriage structure, which includes a rotating means that can rotate in opposition to the first magnetic head, has a complicated structure and is expensive.

SUMMARY OF THE INVENTION The present invention is intended to solve these problems, and its purpose is to provide a second carriage having a simple structure and having a rotating means that can rotate opposite to the first magnetic head. The present invention provides an inexpensive and highly reliable magnetic recording device.

[Means for Solving the Problems] E) The magnetic recording device of the present invention comprises a moving means, a first magnetic head is mounted thereon, and the first magnetic head is moved in accordance with the articulation of the moving driving means. carriage.

A holding element is carried by a holding means carried by the second carriage and holds a medium for recording and reproducing together with the first magnetic head, and the holding element rotates opposite to the first magnetic head. a second carriage with possible pivoting means;

a pressing means for pressing the second carriage to bring the first magnetic head, the medium, and the holding element into close contact with each other in a desired relationship;

In the magnetic recording device, the second carriage is made of an extremely thin plate-shaped metal material having at least flexibility. In addition, the main part of the second carriage, which is a rigid body with a means for removing flexibility, and the rotating means, which is made of the flexibility of the ultra-thin plate-shaped metal material, are integrally constructed. characterized by things.

2) The means for removing flexibility is characterized in that the ultra-thin plate-shaped metal material is provided with a protrusion in a planar direction. A first carriage comprising a moving means according to the invention, carrying a first magnetic head thereon, and moving as a result of movement of a moving driving means.

A holding element is carried by a holding means carried by the second carriage and holds a medium for recording and reproducing together with the first magnetic head, and the holding element rotates opposite to the first magnetic head. a second carriage with possible pivoting means;

a pressing means for pressing and compressing the second carriage to bring the first magnetic head, the medium, and the holding element into close contact with each other in a desired relationship;

This is one of the most suitable embodiments of a magnetic recording device consisting of the following, and FIGS. 8 and 9 are diagrams showing other application examples of the present invention.

FIG. 1 is a sectional view of a main part of a carriage in a magnetic recording apparatus of the present invention, and FIG. 2 is a plan view thereof. and the second
The upper half of the figure has been partially removed for clarity.

In FIGS. 1 and 2, a motor 1 for chucking a disk 2, which is a medium for recording and reproducing, and rotating it in the direction of arrow 3, is fixed to a frame 9; holds a guide shaft 10 as a guide means.

The lower head 8 as a first magnetic head is provided with a moving driving means (not shown), and is made of, for example, a flexible lower gimbal 8a, for example, made of a plastic material.
The lower carriage 7 as a first carriage mounted via the lower head stand 14 which is an insulator is driven by the movement of the moving drive means and is guided by the guide shaft 10 and slides in the direction of arrow 12. It has a structure that allows

On the other hand, the upper head 3, which is a clamping element that clamps the disk 2 and serves as a second magnetic head, is connected to an upper gimbal 3a having flexibility, for example, and an upper head stand 15, which is an insulator, and is made of, for example, a plastic material. A suspension 4a and a suspension 4b each having flexibility at one end are made of an extremely thin and flexible plate-shaped metal material, for example, about (0.05 mm) to (0.3 mm), mounted through the The rigidity of the ultra-thin and flexible plate-shaped metal material is improved so that the two suspensions 4a and the suspension 4b are held on both sides. As a means for removing the flexibility of the portion other than the portion 4b, the upper carriage 4 as a second carriage having a protruding portion 4c is attached to the lower carriage 7 via the suspension 4a and the suspension 4b. 4 is fixed by a screw 13 provided as a fixing means for the lower carriage 7, and the screw 13 constitutes a supporting means for supporting the upper carriage 4 together with the upper carriage mounting portion 7c of the lower carriage 7. The lower carriage 7 is supported by the carrying means.
The lower head 8 and the upper head 3 have a structure in which the disc 2 is held between them.

The upper carriage 4 is connected to the suspension 4.
A and the flexibility of the suspension 4b constitute a rotating means, and as will be described in detail later, there is a biasing structure that contacts and biases the arm 41 of the upper carriage 4 shown by the two-dot chain line in FIG. 17, the upper carriage 4 is configured to be able to rotate opposite to the lower head 8 by the a function of the rotation means.

On the other hand, as mentioned above, the lower head 8 and the upper head 3 sandwich the disk 2, which is a medium for recording and reproducing.
In a magnetic recording device structured to perform recording and playback, for example, the degree of mutual contact, that is, the head touch, which does not allow even a gap of just a few submicrons, directly affects the recording and playback performance of the magnetic recording device. As a measure to improve the head touch, the lower head 8 and the upper head 3 constitute a pressing means for pressing the disc 2 in a sandwiched state.

To be more specific, first, the torsion coil spring 5 is arranged, the torsion coil spring 5 is supported by the spring support 7a extended to the lower carriage 7, and one end is placed in the lower carriage 7 while storing torsional moment energy. It is restrained by the provided spring hook 7b, and the other end presses the upper carriage 4 with a required pressing force.

Then, the spring hooks 7b are configured in multiple stages at required positions,
If the restraining position of one end of the torsion coil spring 5 is configured to be switchable (not shown), the pressing force can be finely adjusted to a required pressing force, and the torsion coil spring 5 does not need to have a precise configuration.

The aforementioned suspension 4a and suspension 4b
Regarding the structure for fixing the upper carriage 4 to the lower carriage 7 through the structure, the holding part 4d which makes the suspension 4a and the suspension 4b into an integral structure again, which is clearly illustrated in FIG. As shown in FIG. 1, the screw 1 is clamped in the opening of a suspension holder 6 configured as a clamping means for clamping the upper carriage mounting portion 7C of the lower carriage 7 and the upper carriage 4.
3, and regarding the fixing of the screws 13, the relative positional relationship between the lower head 8 and the upper head 3 is as follows:
The position is fixed by establishing a predetermined positional relationship.

In order to clearly illustrate the holding part 4d in FIG. 2, half the cross-section of the suspension holder 6 is removed in the illustration of the upper half, but originally the upper half was also shown in the lower half. It is completely symmetrical and functional.

On the other hand, as an effective position adjustment means for predetermining the relative positional relationship between the lower head 8 and the upper head 3 to a required positional relationship, on the other hand, a second
A V-shaped notch 4e as shown in FIG. A guide hole 6b that engages with the boss 4f and guides the position thereof is provided, and a notch 6a that is located at approximately the same plane position as the notch 4e and has approximately the same shape,
The holding portion 4d and the suspension holder 6 are combined as shown in FIG. 1, and gripped by, for example, circular jigs 18a and 18b as shown by two-dot chain lines in FIG. When the position of the holding part 4 is moved, the holding part 4
d and the suspension holder 6 are structured so that they move in a driven position integrally.

Incidentally, as mentioned above, the holding portion 4d is, for example, (0°05m).
It is made of an extremely thin and flexible plate-shaped metal material of about 0.3 mm in thickness, and prevents deformation due to the force of the grip when gripped with the jigs 18a and 18b as described above. As a means for this purpose, as shown in FIG. 1, one end is bent to form a rib 4g to improve the rigidity of the extremely thin and flexible plate-shaped metal material.

The structure of the flexible upper gimbal 3a on which the above-mentioned upper head 3 is mounted will be described in detail later, but the signal line 16 that exchanges signals with the upper head 3 is connected to the above-mentioned upper carriage. The inside of the protruding portion 4C configured as 4 is wired.

By the way, regarding the rotation means configured by the flexibility of the suspension 4a and the suspension 4b, as shown in FIG. As a damper means for stabilizing the operation, an elastic damper 11 made of, for example, a soft elastic rubber material or a foamed cushioning material is installed.In a standalone state, the damper 11 is attached to the suspension holder 6 and the suspension 4a. and suspension 4b
It has a structure that is larger than the gap formed between the two, and when it is installed as shown in FIG. 1, it is compressed and generates a compression reaction force.

The compression reaction force applies pressurization to the suspension 4a and the suspension 4b, thereby forming a damper means for absorbing vibrations of the suspension 4a and the suspension 4b.

The performance of the magnetic head, which serves as a signal conversion element of a magnetic recording device, is delicately affected by the influence of disturbance noise such as electric field noise and magnetic field noise. 0.05mm) ~
As an effective shielding means for protecting the upper head 3 and the lower head 8 from the disturbance noise, etc., the upper carriage 4 is made of an extremely thin and flexible plate-shaped metal material of about (0.3 mm). A peripheral wall 4h is configured to surround the upper head 3.

In order to achieve its purpose, the shielding means requires a required surface area, a required thickness, and a required positional orientation, and it goes without saying that the shielding means should have a large surface area and a large thickness. As described above, the structure of the present invention is such that the entire upper carriage 4 has a thickness of, for example, (0.05 mm) to (0.3 mm).
It is made of a very thin and flexible plate-like metal material, and has a surface area sufficient to protect the above-mentioned upper head 3 and lower head 8 from the disturbance noise, etc. .

Regarding the directionality of the arrangement position, disturbance noise that invades the upper head 3 and the lower head 8 is prevented as follows.

■Disturbance noise that enters from a direction substantially intersecting the disk 2 is the same as that of the disk 2 of the upper carriage 4.
Defend with a surface that spreads in a horizontal direction.

(2) Disturbance noise that enters from substantially the same plane as the disk 2 is protected by the peripheral wall 411 formed on the upper carriage 4.

The above-mentioned shielding means exhibits the following shielding function by making necessary selections and combinations of the constituent materials of the upper carriage 4.

■For example, if it is made of a plate-like material made of iron, which is a magnetic material,
Effective in protecting against disturbance noise such as magnetic field noise.

■For example, if it is made of a copper-based plate material that is a good conductor,
Effective in protecting against disturbance noise such as electric field noise.

(2) For example, if it is made of a plate-like material made of iron, which is a magnetic material, and further subjected to a copper-based surface plating treatment, it is effective in protecting against disturbance noise such as magnetic field noise and electric field noise.

(2) For example, if it is made of a copper-based plate material that is a good conductor and is further subjected to iron-based surface plating, etc., it is effective in protecting against disturbance noise such as magnetic field noise and electric field noise.

As described above, the shielding means of the present invention exhibits a sufficient shielding function by constructing the entire upper carriage 4 from, for example, an extremely thin and flexible plate-shaped metal material as described above. There is no need to construct a shielding means that adds a full-scale shielding member, etc., and the purpose is achieved with an extremely simple structure.

The second carriage structure having a rotating means that can rotate opposite the first magnetic head in the magnetic recording apparatus of the present invention described above has been explained in a static state. Expand your explanation to include dynamic elements.

1) will be explained based on FIGS. 3 and 4.

3 and 4 are detailed views of main parts of the carriage in the magnetic recording apparatus of the present invention, and further details regarding the upper carriage 40 rotation means described above in FIGS. 1 and 2, and the damper means as well. It is a figure explaining in detail.

In FIG. 3, the upper carriage 4 is equipped with the damper 11 described above in FIG. 1 between the suspension holder 6, the suspensions 4a and 4b, and the lower head 8 and the upper head 30. The disk 2 is sandwiched between them.

Then, the damper 11 is configured to include the suspension 4a.
and pressing the suspension 4b against the upper carriage mounting portion 7C of the lower carriage 7 described above in FIG.
The arm portion 4j provided at one end of the protruding portion 4c, which is configured as a means for removing the flexibility of the portion other than the suspension 4a and the suspension 4b described above in FIGS. 1 and 2, is also structured to be pressed in the same manner. The pressing force of the damper 11 is the same as that of the lower head 8 and the upper head 3 shown in FIG.
0, the pressing force PL and the pressing force P2 are shown in the shaded area in the figure, and the pressing force P1 is larger than the pressing force P2, that is, the pressing force P1 is larger than the pressing force P2, that is, the The pressing force is large on the fixed side of the carriage 4 and gradually decreases as it moves toward the upper head 3 side. Care has been taken not to affect the pressing force of the torsion coil spring 5 which presses the disc 2 with a required pressing force while the upper head 8 and the upper head 3 sandwich it.

In FIG. 4, the upper carriage 4 is shown in FIGS. 1 and 2.
The biasing structure 17 that contacts and biases the arm 41 of the upper carriage 4 described above in the figure contacts and biases the arm 41 of the upper carriage 4 from the direction of the arrow 19 and rotates. 3 is moved to create a state in which the disk 2 can be inserted and removed.

In this rotating state, the upper carriage 4 is in contact with a cover 23 which is provided with a smooth sheath I.24 made of, for example, Teflon material and is attached as a means to protect at least the main parts of the apparatus.

Then, for the sake of explanation, the disk 2 is stored, stored, inserted and removed.
The cartridge 2a that moves in the direction of arrow 22 is shown by a chain double-dashed line in the figure.

To explain the rotational state in detail, as described above with reference to FIG. 4, the arm portion 4j is attached to the upper carriage mounting portion 7C.
As shown in FIG. 4, only the suspension 4a and the suspension 4b are elastically deformed and rotated, and the pressing force of the damper 11 is applied to the lower head 8 as shown in FIG. In the state in which the upper head 3 is displaced from the disk 2, the pressing force P3 shown in the shaded area in the figure is applied. It is composed of a pressing force P4, and the suppressing force P4
is larger than the pressing force P3, that is, it is configured to gradually increase as it moves from the fixed side of the upper carriage 4 to the side of the upper head 3, and when the upper carriage 4 is in the state shown in FIG. The damper 11 is designed to protect the suspension 4a and the suspension 4b from disturbances such as vibrations and shocks, and the durability of the suspension 4a and the suspension 4b is significantly improved. In order to prevent deterioration of the rotating means, etc., a dummy medium or the like was attached to the second carriage, and the second carriage was handled in a non-rotating state.However, the damper means of the present invention improves the durability. It is an object of the present invention to provide an inexpensive and highly reliable magnetic recording device which is significantly improved and eliminates the need for mounting a dummy medium or the like.

Further, when the upper carriage 4 swings greatly due to disturbances such as strong vibrations or shocks, the upper carriage 4 is caused to displace the upper carriage 4 at the tip of the suspension holder 6.
in contact with the tip 6c configured as a rotation suppressing means,
The suspension 4a and the suspension 4b do not undergo plastic deformation and have improved mechanical durability, and the cover 23 described above in FIG. 4 is not provided. Furthermore, this purpose can be achieved even without the above-mentioned damper 11, and as a matter of course, according to the rotation suppressing means of the present invention, the rotation suppressing means of the present invention can be used when transporting the magnetic recording device, etc., as described above. It is not necessary to handle the second carriage in a non-rotating state by installing a dummy medium or the like in order to prevent deterioration of the rotating means from severe vibrations and shocks generated during the IF, and it is inexpensive and reliable. The present invention provides a magnetic recording device with high tC.

Incidentally, the structure of the upper carriage 4 of the present invention is as follows:
For example, as described above in Figures 1 and 2, (0.05 mm
) ~ (0.3mm) It is constructed from an ultra-thin and flexible sheet metal material, and it is extremely lightweight as it does not require a shielding material to protect the magnetic head from disturbance noise, etc. It should be noted that the vibration resistance of the upper carriage 4 is extremely high even when subjected to external disturbances such as strong vibrations and impacts as described above.

On the other hand, regarding the lower gimbal 8a, which is flexible, for example, on which the lower head 8 is mounted and the upper gimbal 3a, which is flexible, on which the upper head 3 is mounted, as described above in FIG.
This will be explained in detail with reference to FIG.

Fig. 6 is a detailed view of the gimbal, and Fig. 7 shows in detail the state in which the head is mounted via the gimbal shown in Fig. 6. It is an off-track explanatory diagram explaining a mechanism.

Although FIG. 6 is explained using the lower gimbal 8a described above in FIG. 6 as an example, the upper gimbal 3a also has a completely similar structure.

The lower gimbal 8a to which the lower head 8 is attached has independent elastic fulcrums 8X and 8 on the X and Y axes, respectively, as shown in the figure.
y, and has flexibility in the arrow 20 and arrow 21 directions.

The lower head 8 is attached to the lower carriage 7 via the flexible lower gimbal 8a and the lower head stand 14 described above in FIG.
-H Gimbal 3 FL with similar flexibility
The state in which the upper head 3 is mounted on the upper carriage 4 via the upper head stand 15 described above in FIG. 1 is as shown in FIG. 8 and the upper head 3 sandwiching the disk 2 and pressing it with a required pressing force, the lower gimbal 8a and the upper gimbal 3a each deform and become self-stabilizing.

ΔX2 caused by tilting of the upper head 3 in the self-stabilizing state
is the off-track amount of the upper head 30, and similarly, ΔX1 caused by the tilt of the lower head 8 is the off-track amount of the lower head 8!・This is the amount of racks.

The off-track caused by this mechanism is
As described above with reference to FIGS. 12 and 13 of the conventional example, this occurs when the suspension constructed on the upper carriage is deformed into a substantially arched shape, but in the above-described rotation means of the present invention, , as detailed in FIGS. 3 and 4,
The damper 11 connects the suspension 4a, the suspension 4b, and the arm portion 4j to the upper carriage mounting portion 7C.
The upper carriage 4 does not lift up, and the arm portion 4j comes into contact with the upper carriage mounting portion 7C to form a rotational fulcrum. There is no sinking of the upper carriage 4, and the upper carriage 4 maintains a stable state even when subjected to severe vibrations or shocks, and prevents off-track from occurring due to the mechanism described above in FIG. The relative positional relationship between the recording/reproducing position and the head is extremely stable.

Furthermore, the suspension 4a and the suspension 4 described above
There is no change in the distance from the position where the upper carriage 4 is fixed with the screw 13 to the upper head 3 via the screw 13, and there is no deviation in the radial direction from the recording/reproducing position of the disc 2, that is, off-track. Also, the upper head 3° and the disk 2. The lower head 8 ensures mutual contact that does not allow even a gap of a few submicrons, that is, good head touch, and stably records and reproduces the media between magnetic recording devices. Compatibility is extremely stable.

2) Zero-order explanation based on FIG.

FIG. 5 is a detailed sectional view of the main part of the carriage in the magnetic recording apparatus of the present invention, and further details regarding the rotating means for the upper carriage 4 described above in FIGS. 1, 2, 3, and 4. It is a diagram for explaining in detail, showing the AA cross section of FIG. 2,
In order to make the drawing easier to see, the drawing projection position has been changed.

In FIG. 5, as detailed in FIG. 3, the upper carriage 4 is equipped with the damper 11 described in FIG. 1 between the suspension holder 6 and the suspensions 4a and 4b, The damper 11 presses the suspension 4a and the suspension 41) against the upper carriage mounting portion 7C of the lower carriage 7.
The structure is such that the arm portion 4j described above in FIG. 3 is also pressed in the same manner.

The arm portion 4j has a first arm portion 4j at the left and right positions in FIG.
-1 and a second arm portion 4j-2, and the third arm portion 4j-1 and the second arm portion 4j-2 abut against the upper carriage mounting portion 7C, as shown in FIGS. The upper carriage 4 constitutes a rotation fulcrum of the rotation means detailed in FIG.
This prevents plane twisting of the head, suppresses minute vibrations generated from the stick-slip behavior of the head as described above in FIG. 11 of the conventional example, and provides an extremely good head touch.

In other words, the upper rad 3 shown in FIG. 1 does not cause relative positional deviation in the circumferential direction with respect to the recording/reproducing position of the disk 2, and in other words, the recording/reproducing timing is stable. This is extremely effective in increasing the capacity of magnetic recording devices.

3) First, the head position adjustment means will be explained.

As mentioned above in the conventional magnetic recording device, the recording/reproducing position of the medium is standardized and defined in order to maintain data compatibility, and in particular, the relative position between the lower head 8 and the upper head 3 shown in FIG. The default value of the positional relationship is strict positional accuracy, and mutual positional adjustment is delicate.

Therefore, effective position adjustment means for predetermining the relative positional relationship between the lower head 8 and the upper head 3 of the present invention as shown in FIGS. 1 and 2 and described above to a required positional relationship is to The holding portion 4d and the suspension holder 6 are combined as shown in FIG. 1, and gripped by, for example, circular jigs 18a and 18b as shown by the two-dot chain line in FIG. a and 181), and the suspension boulder 6 and the holding part 4 are moved.
d is configured to integrally move the driven position, and as mentioned above, even if it is clamped by the jigs 18a and 18b, the clamping force is not received by the suspension holder 6, which is a highly rigid body. For example, the holding portion 4 of the upper carriage 4 is made of an extremely thin and flexible plate-shaped metal material.
d is the same as the suspension holder 6 without deformation.
The upper carriage 4 does not generate any stress that would affect the position of the upper head 3 even slightly due to the position adjustment, and the upper carriage 4 does not generate any stress that would affect the position of the upper head 3 even slightly. The correspondence between the position adjustment amounts of 3 is clear, and the position adjustment of the upper head 3 is extremely stable and can be performed easily, realizing high-speed automation of the position adjustment.

- On the other hand, the upper carriage 4 is, for example, (0
It is made of an extremely thin and flexible plate-shaped metal material with a thickness of about 0.05 mm to 0.3 mm, and when gripped with the jigs 18a and 18b, as described above,
Originally, the structure is such that the clamping force is stopped by the suspension holder 6, which is a highly rigid body, but due to, for example, dimensional variations in various places, the clamping force is stopped by the holding part 4d. As a means to prevent deformation due to the clamping force even if such a situation occurs, one end of the holding portion 4d is bent as shown in FIG. Since the rigidity of the plate metal material is improved, even if it is clamped with the jigs 18a and 18b as described above, it will not be deformed by the clamping force, and the suspension holder 6 and the suspension holder 6 will be integrally driven. It is a device that moves in position, and allows for the exact same position adjustment as described above.

Incidentally, as a matter of course, the reinforcing means is the aforementioned jig 18a.
It is not only effective as a means for preventing deformation due to the gripping force when the second carriage is gripped by the second carriage and 18b, but also for reinforcing the second carriage alone, that is, preventing deformation of the flexible rotating means. I would also like to point out that this is an effective means of prevention.

In FIG. 1, the reinforcing means is constituted by a rib 4g which is formed by bending one end of the holding part 4d. Even if the reinforcing means (not shown) is configured with a protruding portion that is thicker than the plate thickness of the portion 4d, it can achieve the same la function as described above.

Regarding the head position adjustment means of the present invention described above in 4) and 3), more stable position adjustment of the upper head 3 will be described.

Effective position adjustment means for predetermining the relative positional relationship between the lower head 8 and the upper head 3 shown in FIG. For example, a V-shaped notch as shown in FIG.
They are combined as shown in the figure and gripped with circular jigs 18a and 18b as shown by the two-dot chain line in Fig. The lease pension holder 6 is constructed to be integrally moved into a driven position, and the position adjusting means is arranged in a manner similar to the above-mentioned suspension serving as the means for rotating the upper carriage 40, as shown in FIG. 4
a and the suspension 4b are located at a position that will not have the same physical effect even if they are clamped by the circular jigs 18a and 18b, that is, the position of the screw 13 as a means for fixing the upper carriage 4 as a reference. , and is disposed substantially opposite to the position of the rotation means.

As for the position of the position adjusting means, it does not necessarily have to be on the opposite side from the position of the rotating means with respect to the position of the screw 13, but as long as it is located near the screw 13, as follows. Function to describe.

It has already been experimentally confirmed that it is effective.

According to the position adjustment means, the screw 13 is temporarily tightened with a required tightening torque, and the holding portion 4d is placed between the upper carriage mounting portion 7c of the lower carriage 7 and the suspension holder 6 described above in FIG. The clamping force is tightened to form a moderately movable state, and the jigs 18a and 18 are clamped with the aforementioned circular jigs 18a and 18b.
b is moved, the holding portion 4d and the suspension holder 6 are integrally moved to the driven position, and the relative positional relationship between the lower head 8 and the upper head 3 is adjusted to a desired positional relationship, and then Tighten the screw 13 as required (=J
In the process of tightening the screws 13 with the required torque and fixing the position, for example, when temporarily tightening the screws 13, the holding portion 4d and the suspension holder 6 may be temporarily tightened by exceeding the required tightening torque. Even if a weak lock state occurs in the integral driven position movement and the jigs 18a and 18b are forcibly moved, the upper carriage 4 is forced to move to the side where the upper head 3 is located. The position movement biasing stress generated by is not transmitted,
As described above, the position adjusting means is arranged on the side substantially opposite to the position of the rotating means, with reference to the position of the screw 13 as the fixing means for the upper carriage 4, as shown in FIG. By arranging the upper head 3, there will be no phenomenon that would cause any change in the position of the upper head 3.

By the way, in 3), in order to maintain the data compatibility of the magnetic recording device mentioned above, the relative positional relationship between the lower head 8 and the upper head 3 with respect to the recording position of the medium, which is specified with strict positional accuracy, must be adjusted. The position adjustment is, for example, only a few microns, and when making the delicate position adjustment,
According to the position adjustment means of the present invention, as described above, the arrangement position of the position adjustment means can be adjusted based on the position of the screw 13 serving as the fixing means for the upper carriage 4, as shown in FIG. For example, a circular jig 1 as shown by the two-dot chain line in FIG.
8a and 18b, clamp and tighten the jigs 18a and 18b.
The stress generated from the clamping force and positional movement bias of the upper head 3 does not cause any phenomenon that would cause a change in the position of the upper head 3.
The jigs 18a and 18b can be firmly gripped and configured with a strong means for holding the position, and can be used as the above-mentioned fixing means for the upper carriage 4 while the jigs 18a and 18b are in a positionally moved state. When screw 13 is tightened,
Subtle positional changes of the suspension holder 6 and the holding portion 4d when tightening the screw 13 can be suppressed.

As described above, according to the position adjustment means of the present invention, the position adjustment of the upper head 3 is not only easy, but also the position fixing of the upper head 3 is extremely stable, and there is no need for the feeling or bones of the position adjustment. This enabled high-speed automation of position adjustment.

In one embodiment of the present invention, the screw 13 has been described as an example of the fixing means for the upper carriage 4, but the fixing means may also be constructed by caulking, welding, gluing, etc. Needless to say, similar effects can be obtained.

5) Next, the lower head 8 and upper head 3 described above
The standards and necessary conditions for adjusting the relative positional relationship of the two to the required positional relationship will be explained.

As mentioned above in the conventional example, the absolute position reference for the position adjustment is the required signal recorded on the medium, and while tracking and reproducing the signal with the lower head 8 and the upper head 3, the required relative position is adjusted. This is to adjust the position according to the positional relationship.

As described above, the lower head 8 and the upper head 3
In a magnetic recording device having a structure in which recording and reproduction are performed by sandwiching the disk 2, for example, the above-mentioned measures are taken to ensure mutual contact that does not allow a gap of even a few submicrons, that is, good head touch. The lower head 8 and the upper head 3 require means for pressing and tightening the disk 2 in a state where they are sandwiched, and the means for pressing and tightening the disk 2 of the present invention is as follows:
As shown in FIG. 1 and described above, the torsion coil spring 5 is supported by the spring holder 7a extended to the lower carriage 7, and one end is attached to the spring holder 7b provided to the lower carriage 7 in a state in which torsional moment energy is stored. and the other end presses the upper carriage 4 with a required pressing force,
The suppressing force has no physical influence on the head position adjusting means and the fixing means for the upper carriage 4 mentioned above in 3) and 4), and the rotating means for the lower carriage 4 mentioned above in FIG. In addition, the pressing force does not change, ensuring the above-mentioned good head touch, and transmitting the required signals recorded on the medium to the lower head 8 and the - head 3 at each If. While performing tracking FT, the position can be easily adjusted to a certain relative positional relationship, and furthermore, even if the above-mentioned fixing means of the upper carriage 4 is fixed after the position adjustment, the above-mentioned required relative positional relationship can be maintained. There will be no change in.

As described above, according to the means for pressing the disk 2 between the lower head 8 and the upper head 3, which is constructed as a measure to ensure good head touch according to the present invention, the required signals recorded on the medium can be transferred. While tracking and reproducing the lower head 8 and the lower head 3, it is not only possible to easily adjust the position to the desired relative positional relationship, but also eliminates the need for feeling or bones during the position adjustment, resulting in high-speed position adjustment. Achieved automation.

6) First, the mounting structure of the lower head 3 described above will be explained.

The above-described mounting structure of the upper head 3 shown in FIG. For example, the upper gimbal 3a9 is made of a flexible material such as a plastic material, and the upper head stand 15 is an insulator.
The above-mentioned lower carriage 4 has a shielding function to protect the magnetic head as a signal conversion element of the magnetic recording device from disturbance noise such as electric field noise and magnetic field noise. The upper carriage l
Regarding 1, if a grounding relationship is established with the head as the signal conversion element, it will act as an antenna for the head, and in order to effectively perform the above-mentioned shield function, the head and the upper carriage 4 must is electrical,
The upper head stand 15 is preferably constructed in a non-conducting relationship in terms of magnetic path.The upper head stand 15 is made of, for example, a plastic material as described above, and is an insulating and non-magnetic material. Moreover, the uke has the role of effectively fulfilling the shielding function of the carriage 4.

Incidentally, as mentioned above, the upper carriage 4 has, for example, (0,
It is made of an extremely thin and flexible plate-shaped metal material with a thickness of about 0.05 mm to 0.3 mm, and the above-mentioned upper head 3 is mounted via the above-mentioned flexible upper gimbal 3a, for example. Depending on the situation, there are restrictions on the shape, etc., but by intervening the upper head stand 15, even a complicated mounting part shape can be provided without difficulty.

7) The state of insertion and removal of the zero-order medium will be explained based on FIG.

As described above in 1) based on FIG. 4, the upper carriage 4 is attached to the biasing structure 17 that contacts and biases the arm 41 of the upper carriage 4 described above in FIGS. 1 and 2. The upper head 3 is rotated in the direction of the arrow 19 by being urged into contact with it, and the upper head 3 is displaced from the lower head 8 and the disk 2, thereby forming a state in which the disk 2 can be inserted and removed. In the moving state, the upper carriage 4 rests on a cover 23, which is provided with a smooth sheet 24, for example made of Teflon material, configured as a smooth surface means.

For the sake of explanation, a cartridge 2a that accommodates the disk 2 and allows it to be inserted and removed is shown by a two-dot chain line in the figure, and the cartridge 2a moves in the direction of arrow 22.

In the above configuration, the upper carriage 4, which has been rotated due to contact bias, comes into contact with the cover 23 provided with the smooth sheath I.24 made of, for example, Teflon material, and is prevented from rotating. If the cover 23 were not provided, the rotational position of the upper carriage 4 would be the abutting position where the biasing structure 17 is abutted and biased in the direction of the arrow 19. Depending on the amount of bias, even if the amount of contact bias varies slightly as shown in FIG.
The rotational position of the cartridge 2a is enlarged and varies widely, increasing the risk of collision with the cartridge 2a described above.

However, conventionally, the rotating position of the upper carriage 40 and the cover 23 are configured to have a gap so that the conditions are exactly the same as those without the cover 23, and the upper head 3 and the cartridge 2a In order to avoid collisions, a large gap is required, making it difficult to make the magnetic recording device thinner.

On the other hand, in view of the recent trend toward lighter, thinner, shorter and smaller versions of the Restem-47 equipped with a magnetic recording device, there has been a growing demand for the realization of an extremely thin magnetic recording device.

Therefore, the above-mentioned upper carriage 4 of the present invention is replaced with a cover 24 provided with a smooth sheet 24 made of, for example, Teflon material.
According to the stopper means, which stops the rotational position of the upper carriage 4 by abutting against the upper carriage 4, when the upper carriage 4 is actively brought into rotational contact with the cover 23 configured to have a fixed position structure, the upper carriage 4 is prevented from rotating. The head 3 can secure a stable rotational position with little variation, and the above-mentioned extra gap can be eliminated, making it easy to realize a thin magnetic recording device.

The smooth sheet 24 made of, for example, Teflon material provided on the cover 23 can eliminate the contact sound when the upper carriage 4 is brought into rotational contact, and can also be used to maintain the rotational contact state, i.e.
During so-called standby seek, in which the cartridge 2a containing the disk 2 is moved in a removably insertable state according to the movement of the moving drive means, the upper carriage 4
and the friction of the cover 23 is reduced,
Regarding the stopper means of the present invention, the smooth sheet 24
Even if it is not equipped, its functions can be fully demonstrated.

A smooth sheet 24 made of, for example, Teflon material, provided on the cover 23 is a means of smooth surface means, and is a surface where the cover 23 and the upper carriage 4 come into contact with each other. For example, even a smooth coating made of Teflon material or the like can perform the same function as described above.

8) The relative positional relationship between the recording/reproducing position of the zero-order medium and the magnetic head will be explained.

A magnetic recording device is capable of operating even when there are environmental changes in temperature and humidity, and the functions of the magnetic recording device must not be impaired due to such environmental changes.

In particular, the disk 2, which is a medium for recording and reproducing as shown in FIG. 1, expands and contracts in accordance with the expansion rate due to environmental changes. The entire element expands and contracts in the same way, and basically the amount of expansion and contraction of the disk 2 and the amount of expansion and contraction of the entire component of the magnetic recording device is caused by changes in the temperature and humidity environment in various parts of the entire component. The disk 2 shown in FIG.
The relative positional relationship between the upper head 3 and the upper head 3 is also structured to cancel the expansion and contraction 1 caused by the aforementioned environmental changes.

However, if the second carriage is made of, for example, a plastic material, as in the conventional example shown in FIG. However, the upper carriage 4 as the second carriage of the present invention has a diameter of (0.05 mm), for example, as described above in FIGS. 1 and 2. ~
It is made of an extremely thin and flexible plate-shaped metal material with a thickness of about (0.3 mm), and the amount of expansion and contraction due to environmental changes in temperature and humidity is extremely stable. The expansion/contraction amount cancellation described above is extremely stable and easily obtained, and the relative positional relationship between the recording/reproducing position of the medium and the magnetic head, which is the most basic for a magnetic recording device, is as follows.
Regardless of environmental changes such as temperature and humidity, the required positional relationship can always be ensured, and the compatibility of the medium between magnetic recording devices is extremely stable.

9) Next, move the upper carriage 4 of the present invention to, for example, (0
, 05 mm) to (0.3 mm) and is constructed from an extremely thin and flexible plate-shaped metal material.

Types of magnetic recording devices are defined by the size of the medium used for recording and reproducing, and large-sized devices have an outer diameter of about 8 inches, and this method is applicable to large-sized media. In the magnetic recording device, if the upper carriage 4 is made of an extremely thin and flexible plate-shaped metal material of, for example, about 0.3 mm, the above-described second carriage of the present invention can be achieved. Functionality is configurable.

On the other hand, with regard to small-sized media, reflecting the recent trend in favor of light, thin, short, and small size, the development of ultra-small media in which the outer diameter of the media is approximately 1 inch is progressing. In a magnetic recording device applied to ultra-small media, the upper carriage 4 is, for example, 0. When constructed from an extremely thin and flexible plate-shaped metal material of approximately O5lnm,
It is possible to configure the function as the second carriage of the present invention as described above.

Regarding the magnetic recording apparatus applied to the ultra-small medium, the structure of the upper carriage 4 of the present invention is extremely simple and extremely useful for miniaturizing the apparatus configuration.

Needless to say, magnetic recording devices that have already been put into practical use include those in which the aforementioned medium outer diameter is about 8 inches, the medium outer diameter is about 5.255 inches, and the medium outer diameter is about 3 inches. .5 inches, the outer diameter of the medium is about 3 inches,
There are many types of media with an outer diameter of about 2.5 inches, and of course there are many types of media with an outer diameter of about 2.5 inches.
) The upper carriage 4, which is made of an extremely thin and flexible plate metal material of about 0°3 mm, provides a magnetic recording device applicable to the medium outer diameter size. Regarding the material composition of the upper carriage 4, it is possible to easily configure the upper carriage 4 by selecting a material with the required thickness from the thickness range of (0.05 mm) to (0.3 mm) mentioned above. I'll add it.

As described above, the second carriage structure in the magnetic recording apparatus of the present invention, which has a rotating means capable of rotating in opposition to the first magnetic head, has a number of practical effects, among others. , for example (0,05m m )
The upper carriage 4, which is made of an ultrathin and flexible plate-like metal material of about 0,31 TI tn , can be easily provided by processing means such as press processing, and has a simple structure. This makes it possible to produce an inexpensive and highly reliable magnetic recording device.

Next, other application examples will be explained with reference to FIGS. 8 and 9 regarding the second carriage structure having a rotating means that can rotate opposite to the first magnetic head in the magnetic recording device of the present invention. do.

FIG. 8 shows another example of application of the present invention, and is a sectional view of the main part of the carriage, and FIG. 9 is a plan view thereof.

Comparing FIG. 8 and FIG. 1, and FIG. 9 and FIG. 2, the difference in structure is that the structure of the upper carriage 4 as the second carriage described above in FIGS. 1 and 2 is different. However, the structures of the ponds are exactly the same, and the following explanation will omit the same structural parts.

In FIG. 8 and FIG. 9, a moving drive means (not shown)
The lower carriage 7, which serves as a first carriage, is structured to slide and move according to the articulated movement of the moving drive means.

On the other hand, it is a clamping element that clamps the medium, and is equipped with a pad 33 made of felt material made of, for example, aUa quality, and is extremely thin and flexible, for example, about (0.05 mm) to (0.3 mtn). It consists of a suspension 34a and a suspension 34b, which are made of a plate-shaped metal material and have flexibility at the ends, and the poles are placed in a position where the two suspensions 34a and 34b are held on both sides. The second protruding portion 34c is used as a means for increasing the rigidity of the thin and flexible plate-shaped metal material and removing the flexibility of the portion other than the two suspensions 34a and 34b. The pad holder 34 as a carriage is fixed to the lower carriage 7 via the suspension 34a and the suspension 34b.

The pad holder 34 constitutes a rotating means by the flexibility of the suspension 34a and the suspension 34b, and has a rotatable structure.

To explain the rotation means in more detail, a protrusion 34c is configured as a means for eliminating flexibility in a portion other than the suspensions 34a and 34b, and 1. An arm portion 34j is provided at one end, and the arm portion 4j has first arm portions 34j-1 at both end positions as shown in FIG.
and constitutes a second arm portion 34j-2, and the second arm portion 3
4j-1 and the second arm 34j-2 are the lower carriage 7.
It is in contact with the upper carriage mounting portion 7c, and constitutes a rotation fulcrum of the rotation means having the same function as that described above with reference to FIGS. 3, 4, and 5. Planar twisting of the suspension 34a and the suspension 34b is prevented.

Then, the suspension 34a and the suspension 3
41], Figures 1, 2, and 3.

Damper 1 similar to the content described above in Figures 4 and 5
1 and has the same functions as those described above.

It is proving effective.

Note that the pad 33 mounted on the pad holder 34
The pad holder 34 has a substantially cylindrical shape, and the pad holder 34 is structured to surround the pad 33 as shown in FIG. 8, and when combined as shown in the figure, This structure restricts the position of the pad 33.

The pad 33 is fixedly mounted using a fixing means such as double-sided adhesive tape, and no other special mounting means is required for this mounting.

In the applied example of the present invention, a pad 33 made of, for example, fibrous felt material is mounted on a T bar as a clamping element for clamping a medium. Regarding the shielding effect described in FIG. 2, the pad holder 34 does not function at all, but at least the pad holder 34 functions as a shield for the lower head 8 as the first magnetic head.

For example, (0.05 mm) to (0
As shown in FIG. 8, the pad holder 34, which is made of an extremely thin and flexible plate-shaped metal material with a thickness of approximately 3 mm), is configured to surround the pad 33 in two directions. The means for doing so can be easily provided, for example, by processing means such as press working.

[Effects of the Invention] As described above, the present invention has many of the above-mentioned practical effects among the embodiments of the present invention, and in particular, the magnetic recording device of the present invention has a simple structure. a second carriage having a rotating means that can rotate opposite the first magnetic head, and in particular, the main part of the second carriage and the rotating means are made of an extremely thin and flexible material. The second carriage, which is integrally constructed of a plate-shaped metal material with Therefore, the practical effects of the present invention are extremely large.

[Brief explanation of the drawing]

1 to 7 show the most suitable embodiment of the magnetic recording apparatus of the present invention, and FIGS. 8 and 9 show other examples of application of the present invention. FIG. 1 is a sectional view of a main part of a carriage in a magnetic recording apparatus of the present invention, and FIG. 2 is a plan view thereof. 3 and 4 are detailed views of the main parts of the carriage in the magnetic recording apparatus of the present invention. FIG. 5 is a detailed sectional view of the main part of the carriage in the magnetic recording device of the present invention. FIG. 6 is a detailed view of the gimbal, and FIG. 7 is an explanatory view of off-track. FIGS. 8 and 9 show other application examples of the present invention.
The figure is a sectional view of the main part of a carriage according to another application example of the present invention, and FIG. 9 is a plan view thereof. FIGS. 10, 11, 12, and 13 are diagrams explaining conventional examples. FIG. 10 is a sectional view of the main part of a carriage in a conventional magnetic recording device, and FIG. FIG. 3 is a perspective view of main parts. FIGS. 12 and 13 are detailed cross-sectional views of the main parts of a carriage in a conventional magnetic recording device. 3, upper head 4, upper carriage 4a, 4b..., suspension =+n 4e, 6a,
, , , , Notch 4h , , , , , Peripheral wall 5191000910. Torsion coil spring 6...
,,,,,The Suspension Holder 7,,,,,,,,,
, lower carriage 8, lower head 9, frame 11, . 0. , ;, , Damper i3. , , , , , , , Screw 15 , , , , , , Upper head stand 23 , , - Cover 24 , Smooth sheet 33 , , ,,,,,Pad 34,,,,,,,-,,Pad holder and above Applicant: Seiko Epson Co., Ltd. Representative Patent Attorney Tsutomu Mogami and 1 other personFigure 3 ZU Katana r-Z4 Smooth sheet Figure 5 Figure 10 Figure 11 Figure 12 Figure 13

Claims (1)

[Claims] 1) A first carriage comprising a moving means, on which a first magnetic head is mounted, and which moves according to the articulation of a moving driving means; a carrying means carried by the first carriage; a second magnetic head, which is supported on the first magnetic head and includes a holding element for holding a medium for recording and reproducing together with the first magnetic head, and has a rotating means that is rotatable in opposition to the first magnetic head; A magnetic recording device comprising: a carriage; a pressing means for pressing the second carriage to bring the first magnetic head, the medium, and the holding element into close contact with each other in a desired relationship; , a second main part of the carriage which is made of an ultra-thin plate-shaped metal material having at least flexibility and has a means for removing the flexibility, and which forms a rigid body; and the ultra-thin plate-shaped metal material. 1. A magnetic recording device characterized in that said rotating means, which is flexible, is constructed as an integral structure. 2) The magnetic recording device according to claim 1, wherein the means for removing flexibility is constructed by providing a protrusion in a planar direction on the extremely thin plate-shaped metal material. .