JPS6387672A - Magnetic recorder - Google Patents

Abstract

PURPOSE:To reduce a cost and to improve the reliability by constituting a second carriage having a turning means so that this carriage faces a first magnetic head. CONSTITUTION:An upper carriage 4 as the second carriage constitutes the turning means with the flexibility of suspension arms 4 and 4b, and the upper carriage 4 is abutted and energized by an energizing structure body 17, which is shown by an aternate long and two short dashes line and is abutted and energized by the arm 4i of the upper carriage 4, and is turned while facing a lower head 8 as the first magnetic head. The upper carriage 4 consists of a magnetic material and is made from a conductive plate-shaped metallic material which is very thin to have 0.05-0.3mm thickness and has the flexibility. The upper carriage 4 is easily produced by a working means such as a press working. 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 second magnetic head having a rotating means that is rotatable opposite to a first magnetic head. Regarding the carriage structure of.

[Prior art] A device equipped with a conventional moving means and equipped with a first magnetic head,
A first carriage that moves according to the movement of the moving drive 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 magnetic recording apparatus comprising a suppressing 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 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 steel or the like.

Through the suspension 56, the lower carriage 57
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 configured to be rotatable opposite the lower head 58 due to the flexibility of the suspension 56.

On the other hand, a spring 55 is disposed as a means for pressing the lower head 58 and the upper head 53 to sandwich the disk 52, which is a medium for recording and reproducing.
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.

The shielding material 61 has a required surface area and a required thickness in order to achieve its purpose, and it goes without saying that 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 to the first magnetic head in the conventional magnetic recording apparatus described above, requires a number of improvements as described below.

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,
Furthermore, if this is changed, 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. , the substantially arcuate deformation of the suspension 56 changes from the position where the suspension 56 is fixed with the screw 67 to the upper head 5.
3 changes, and this causes a radial positional deviation with respect to the recording/reproducing position of the disk 52, that is, an off-track, which hinders the increase in the capacity of the magnetic recording device and the magnetic It also has fatal flaws such as loss of compatibility of media between recording 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
．． The lower heads 58 are such that, for example, a gap of only a few submicrons is not allowed for mutual contact, that is, the head touch deteriorates, and even recording and reproduction becomes impossible.

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. The suspension 56 is compressed between the lower carriage 57 and the spring receiver 66 to make it moderately movable, and for example, a part of the upper carriage 54 is urged to move to move the suspension 56, After adjusting the relative positional relationship between the lower head 58 and the upper head 53 to a desired positional relationship, the screws 67 are again tightened with the required torque to fix the position.

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. When the suspension 56 is moved, the suspension 56 remains under bending or buckling stress, and when the movement urging force applied to a part of the upper carriage 54 is released, the stress is released. However, on the other hand, as the stress is released, the upper carriage 54 returns to its position in a direction that resists the movement biasing force, resulting in a difference from the intended position, and the upper carriage 54 returns to its position in a direction that resists the movement urging force. Adjusting the position of the upper head 53 to the required relative position requires a lot of effort and effort to correct the difference from the target position, and requires 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 the required positional relationship. This signal is used as a reference and is tracked and reproduced by the lower head 58 and the upper head 53 to adjust the position to the required relative positional relationship, and the signal is reproduced stably, although it may be difficult to reproduce. In order to do this, the upper head 53. The disk 52. In order to ensure mutual contact, that is, good head touch, without allowing even a gap of a few submicrons, for example, the lower heads 58 are
As described above, the lower head 58 and the upper head 53 are pressed against the disk 52 by the spring 55, and in this configuration, the spring receiver 66 is lifted up by the reaction force of the spring 55. It is not easy to compress the suspension 56 between the lower carriage 57 and the spring receiver 66 in step 3) to create a state in which it can move properly. For example, after moving and urging a part of the upper carriage 54 to move the suspension 56 and adjusting the relative positional relationship between the lower head 58 and the upper head 53 to a desired position, the screw 67 is At the moment when the required tightening is tightened with torque and the position is fixed, a change occurs in which the aforementioned suspension 56 is pressed between the lower carriage 57 and the spring receiver 66, and if replaced with i',
The position of the upper carriage 54, that is, the upper head 53 has changed, and the lower head 5 has had its position adjusted.
This causes a change in the relative positional relationship between the lower head 58 and the upper head 53, and as in 3), adjusting the required relative positional relationship between the lower head 58 and the upper head 53 requires the adjustment. It required a great deal of effort and effort, and an immeasurable amount of time.

As mentioned above, the second carriage structure that has a rotating means that can rotate opposite the first magnetic head in a conventional magnetic recording device has many problems, and the magnetic recording This not only affected the reliability of the device, but also made it impossible to automate the mass production 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 object is to provide a second gear ridge having a simple structure and having a rotating means that can rotate opposite to the first magnetic head. , and also eliminate fatal flaws as a magnetic recording device.

The present invention provides an inexpensive and highly reliable magnetic recording device.

[Means for Solving the Problems] The magnetic recording apparatus of the present invention includes: a first carriage that is provided with a moving means, on which a first magnetic head is mounted, and that moves according to the movement of the moving drive 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;

suppressing 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 magnetic recording device comprising the following features: 1) The second carriage is made of an extremely thin plate-shaped metal material having at least flexibility, and has an integral structure including the rotation means. shall be.

2) The holding element is configured with a magnetic head and is mounted on the second carriage via an insulator.

3) The holding element is a pad and is mounted on the second carriage without intervening means.

4) The second carriage is made of a material with good conductivity.

5) The second carriage is made of a magnetic material.

[Function] According to the above configuration of the present invention, the second carriage protects from disturbance noise such as electric field noise and magnetic field noise,
Furthermore, regardless of environmental changes such as temperature and humidity, the relative positional relationship between the recording/reproducing position of the medium and the sandwiching element is always maintained as required, thereby ensuring compatibility of the medium between magnetic recording devices. It is something that stabilizes.

Embodiment FIGS. 1 to 7 show a first carriage that is equipped with the moving means of the present invention, has a first magnetic head mounted thereon, and moves according to the movement of the moving drive means.

A holding means carried by the second carriage is provided with a holding element for holding a medium for recording and reproducing together with the first magnetic head, and is rotated opposite to the first magnetic head. a second carriage having movable pivoting means;

suppressing 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;

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. It is made of an extremely thin and flexible plate-shaped metal material, for example, about (0.05 mm) to (0.3 mm), and is mounted through a flexible suspension 4a and a suspension 4b at one end. The two suspensions 4a and suspension 4b are placed in a position where the two suspensions 4a and suspension eyes 4b are held on the surface by improving the rigidity of the extremely thin and flexible plate-shaped metal material. As a means for removing the flexibility of the portion other than the upper carriage 4, 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. The screw 13 is fixed by a screw 13 provided as a fixing means, and the screw 13 and the upper carriage mounting portion 7c of the lower carriage 7 constitute a supporting means for supporting the upper carriage 4. The lower carriage 7 is
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 brought into contact with the lower head 8 by the function of the rotation means.
It has a structure that allows it to rotate in opposition to the

On the other hand, as described above, in a magnetic recording device having a structure in which the disk 2, which is a medium for recording and reproduction, is sandwiched between the lower head 8 and the upper head 3 for recording and reproduction, it is possible to The mutual contact condition that does not allow even a gap between the two heads, that is, the bed touch, directly affects the recording and reproducing performance of the magnetic recording device. constitutes a suppressing means for holding and pressing the disk 2.

Specifically, first, a torsion coil spring 5 is arranged, and the torsion coil spring 5 is supported by a spring support 7a extended to the lower carriage 7, and with torsional moment energy stored, one end is attached to the lower carriage 7. 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.

Regarding the structure for fixing the upper carriage 4 to the lower carriage 7 via the suspension 4a and the suspension 4b described above, the suspension 4a and the suspension 4b, which are clearly illustrated in FIG. 2, are made into an integral structure again. As shown in FIG. The screws 13 are used to fix the lower head 8 and the upper head 3 by setting the relative positional relationship between the lower head 8 and the upper head 3 to a predetermined position.

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 arranged and functions in a completely symmetrical manner.

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 the figure is formed, and a plurality of bosses 4f are provided as means for positionally guiding the suspension holder 6 as shown in FIG. 6 is provided with a guide hole 6b that engages with the boss 4f and is guided in position, and also constitutes 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, the holding portion 4d is, for example, (0°05
It is made of an extremely thin and flexible plate-shaped metal material with a thickness of -(0.3 mm), and as described above, the jig 18
As a means of preventing deformation due to the gripping force when gripping the parts a and 18b, one end is bent to form a rib 4g as shown in FIG. The rigidity of the material has been improved.

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 of the above-mentioned rotation means, an elastic damper 11 made of, for example, a soft elastic rubber material or a foamed cushion material is installed. The gap is larger than the gap formed between the holder 6 and the suspensions 4a and 4b.

When installed as shown in FIG. 1, it is compressed and generates a compression reaction force.

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

It should be noted that the performance of a magnetic head 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) ~(0
, 3 mm), the upper carriage 4 is made of an extremely thin and flexible sheet metal material, and the upper head is installed as an effective shielding means for protecting the upper head 3 and the lower head 8 from the disturbance noise, etc. A peripheral wall 4h is configured to surround 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 is made of an extremely thin and flexible plate of, for example, (0.05 mm) to (0.3 mm). It is made of a shaped metal material and has a sufficiently effective surface area to protect the above-described upper head 3 and the lower head 8 from the disturbance noise and the like.

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

(2) Disturbance noise that enters from a direction substantially intersecting the disk 2 is protected by a surface of the upper carriage 4 that extends in the same plane as the disk 2.

(2) Disturbance noise that enters from substantially the same plane as the disk 2 is protected by the peripheral wall 4h 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.

In the magnetic recording device of the present invention described above.

The second carriage structure having a rotating means that can rotate in opposition to the first magnetic head has been explained in a static state, but now the explanation will be expanded to include dynamic elements. .

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

FIGS. 3 and 4 are detailed views of the main parts of the carriage in the magnetic recording apparatus of the present invention. It is a figure explaining in more 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 suspension 4a, and the suspension 4b, and the damper 11 described above in FIG. The disk 2 is held between them.

Then, the damper 11 is configured to include the suspension 4a.
and the suspension 4b are pressed against the upper carriage mounting portion 7c of the lower carriage 7 described above in FIG. 1, while removing the flexibility of the portion other than the suspension 4a and the suspension 4b described above in FIGS. Also, the arm portion 4j provided at one end of the protruding portion 4c configured as a means,
The damper 11 has a similar pressing structure, and the pressing force of the damper 11 is applied to the diagonally shaded area in the state where the disk 2 is sandwiched between the lower head 8 and the upper head 3 shown in FIG. The pressing force shown in P1. The pressing force P1 is larger than the pressing force P2, that is, the pressing force is large on the fixed side of the upper carriage 4 and gradually decreases as it moves toward the upper head 3 side. and
As a measure to improve the head touch described above in FIGS. 1 and 2, the pressing force of the torsion coil spring 5 that presses the disc 2 between the lower head 8 and the upper head 3 with a required pressing force is affected. Please take care not to do so.

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 sheet 24 made of, for example, Teflon material and is attached as a means to protect at least the main parts of the apparatus.

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.

To explain the rotation state in detail, as described above with reference to FIG.
When the upper carriage 4 is rotated while being pressed, the arm portion 4j comes into contact with the upper carriage mounting portion 7c and forms a rotation fulcrum, and as shown in FIG. 4b is elastically deformed and rotated, and the pressing force of the damper 11 is applied from the lower head 8 and the disk 2 to the upper head 3 shown in FIG.
In the state where P3. is shifted, the pressing force P3. The pressing 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 upper head 3 side. Even if the carriage 4 is subjected to disturbances such as severe vibrations or shocks in the state shown in FIG. 4, consideration is given to protecting it by the pressing force of the damper 11, and the durability of the suspensions 4a and 4b is significantly improved. Conventionally, when transporting a magnetic recording device, a dummy medium or the like has been attached to prevent the rotating means from deteriorating, and the second carriage has been handled in a non-rotating state.
According to the damper means of the present invention, the durability is significantly improved, and the installation of a dummy medium or the like is not necessary, thereby providing an inexpensive and highly reliable magnetic recording device.

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. Moreover, 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, when the magnetic recording device is transported in the same way as described above, it is possible to achieve this purpose. 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 due to severe vibrations and shocks that occur in other vehicles, and it is inexpensive and reliable. The present invention provides a highly flexible magnetic recording device.

Incidentally, the structure of the upper carriage 4 of the present invention is as follows:
For example, as described above in Figs. 1 and 2 (0, 05 mm
) It is made of an ultra-thin and flexible plate-shaped metal material of about 0.3 mm, and it is extremely lightweight as it does not require a shielding material to protect the magnetic head from external noise, etc. It should be noted that the vibration resistance of the upper carriage 4 is extremely high even when subjected to 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. 1 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 8y on the X and Y axes, respectively, as shown in the figure.
It has flexibility in the directions of arrows 20 and 21.

The lower head 8 is attached to the lower carriage 7 via the lower gimbal 8a that extends the flexibility and the lower head stand 14 described above in FIG.
The upper gimbal 3a and the first gimbal have similar flexibility.
The state in which the upper head 3 is mounted on the upper carriage 4 via the upper head stand 15 mentioned above in the figure is as shown in FIG.
As described above with reference to FIGS. 1 and 2, when the lower head 8 and the upper head 3 sandwich the disk 2 and press it with a required pressing force, the lower gimbal 8a and the upper gimbal 3a are deformed, respectively. self-stabilize.

Δx2 caused by tilting of the upper head 3 in the self-stabilizing state
is the off-track amount of the upper head 3, and similarly, Δx1 caused by the tilt of the lower head 8 is the off-track amount of the lower head 8. .

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 is not lifted up, and the arm portion 4j is in contact with the upper carriage mounting portion 7c to form a rotation 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, thereby preventing the occurrence of off-track caused by the mechanism described above in FIG. 7. The relative positional relationship between the recording/reproducing position of the medium 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 18 to the upper head 3 via the screw 18, 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) First, it will be explained based on FIG.

FIG. 5 is a detailed cross-sectional view of the main part of the carriage in the magnetic recording apparatus of the present invention, and the upper carriage 40 rotating means described above in FIGS. 1, 2, 3, and 4 is further detailed. It is a diagram for explaining, 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. 8, 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 has a structure in which the suspension 4a and the suspension 4b are pressed against the upper carriage mounting portion 7c of the lower carriage 7, and 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. 4, and the upper carriage 4 prevents the suspension 4a and the suspension 4b from being twisted in plane, as described above in FIG. 11 of the conventional example. This suppresses the slight vibrations caused by the stick-slip behavior of the head, resulting in extremely good head touch.

If this is done, the upper head 8 shown in FIG. 1 will not be displaced in the circumferential direction relative to the recording/reproducing position of the disk 2, and furthermore, the recording/reproducing timing will be stabilized when the head is replaced. Therefore, it is extremely effective in increasing the capacity of magnetic recording devices.

3) The zero-order 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 of the lower head 8 and the upper head 3 shown in FIG. The default value of the relationship is strict positional accuracy, and mutual position 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 two-dot chain lines in FIG. Move the position of
The suspension eye holder 6 and the holding portion 4d are configured to move integrally to the driven position, and even when gripped with the jigs 18a and 18b, for example, as described above, the gripping force is strong due to the high rigidity. A certain suspension eye holder 6
The holding part 4d of the upper carriage 4, which is made of an extremely thin and flexible plate-shaped metal material, moves in a driven position integrally with the suspension eye holder 6 without deformation. , the upper carriage 4 does not generate stress that would affect the position of the upper head 3 even slightly due to the position adjustment, and the correspondence between the above-mentioned position adjustment amount and the position adjustment amount of the upper head 3 is clear. Therefore, the position adjustment of the upper head 3 can be performed extremely stably and easily, and high-speed automation of the position adjustment has been realized.

On the other hand, 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 as described above, the jig 1
As mentioned above, when gripping with 8a and 1.8b,
Originally, the structure is such that the clamping force is received by the suspension holder 6, which is a highly rigid body, but due to, for example, dimensional variations in various places, there are cases where the clamping force is not received by the holding part 4d. As a means to prevent deformation due to the clamping force even if this occurs, one end of the holding portion 4d is bent as shown in FIG. Since the rigidity of the plate-shaped 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 it will not be deformed by the clamping force, and it will be able to move into the driven position integrally with the suspension holder 6. It is movable 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 mention that therapeutic effects are a means to prevent this.

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 as a protruding portion that is thicker than the plate thickness of the portion 4d, the same function as described above can be achieved.

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 adjusting 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. 2 is formed on both sides, and the first
They are combined as shown in the figure and gripped with circular jigs 18a and 18b, for example, as shown by two-dot chain lines in FIG. 2. By moving the jigs 18a and 18b, The structure is such that the suspension holder 6 is integrally moved to a driven position, and the position adjustment means is arranged in a manner similar to the suspension 4a as the rotation means for the upper carriage 4, as shown in FIG. And the suspension 4b is located at a position where no appreciable physical effect is caused even if the suspension 4b is 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. It is disposed on a side 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 torque, and the holding portion 4d is connected to the upper carriage mounting portion 7c of the lower carriage 7 and the suspension holder 6 described above in FIG. The above-mentioned, for example, circular jig 1
The jigs 18a and 18b are clamped by 8a and 18b.
, and 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. In the process of tightening the screw 13 to the required torque and fixing the position, for example, when temporarily tightening the screw 13, the required tightening torque may be exceeded to temporarily tighten the screw 13. Even if the jigs 18a and 18b are forcibly moved due to a weak lock state occurring in the integral driven position movement of the portion 4d and the suspension holder 6, the upper head 3 of the upper carriage 4 will not be located on the side of the upper head 3. , the position movement biasing stress generated by the forced position movement is not transmitted, and as described above, the arrangement position of the position adjustment means is changed by fixing the upper carriage 4 as shown in FIG. 2. Screw 13 as a means
Since the upper head 3 is disposed on the side substantially opposite to the position of the rotating means, the position of the upper head 3 does not change in any way.

By the way, in 3), in order to maintain the compatibility of data in the magnetic recording device mentioned above, delicate positional adjustment of the relative positional relationship between the lower head 8 and the upper head 3 with respect to the recording/reproducing position of the medium specified with strict positional accuracy is necessary. is, for example, only a few microns, and when performing 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 is shown in FIG. As shown in FIG.
For example, a circular jig 18 as shown by the two-dot chain line in the figure.
The stress generated from the clamping force and positional movement bias of the jigs 18a and 18b caused by the clamping by the jigs 18a and 18b does not cause any change in the position of the upper head 3, as described above. For example, the circular jigs 18a and 18b are
The jigs 18a and 1 can be configured with strong means for firmly gripping and holding the position.
When the screw 13 as the fixing means for the upper carriage 4 is tightened while the upper carriage 8b is moved, a slight change in the position of the suspension holder 6 and the holding part 4d occurs when the screw 13 is tightened. can be suppressed.

As described above, according to the position adjustment means of the present invention, not only the position adjustment of the upper head 3 is easy, but also the position fixing of the upper head 3 is extremely stable, and the feeling of the position adjustment and the bone etc. This eliminates the need for one-position adjustment and achieves high-speed automation.

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. It goes without saying that 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. A means for pressing the disk 2 between the lower head 8 and the upper head 3 is required, and the means for pressing the disk 2 according to the present invention is as shown in FIG. The support is supported by a spring support 7a extended to the upper carriage 7, and in a state in which torsional moment energy is stored, one end is restrained by a spring support 7b provided on the lower carriage 7, and the other end is applied to the upper carriage 4 with a required pressing force. While pressing with 3
) and 4) above, the suppressing force does not have any physical effect on the head position adjusting means and the fixing means for the upper carriage 4, and the assisting means for the upper carriage 4 mentioned above in FIG. In addition, the suppressing force does not change, ensuring the above-mentioned good head touch, and easily tracking and reproducing the required signals recorded on the medium with the lower head 8 and the upper head 3. Furthermore, even if the upper carriage 4 is fixed by the above-mentioned fixing means after the position adjustment, the required relative positional relationship will not change.

As described above, according to the means for pressing the disk 2 between the lower head 8 and the upper head 3, which is configured as a measure to ensure a good head touch according to the present invention, the required signals recorded on the medium can be transferred. Not only can the position be easily adjusted to a desired relative positional relationship while tracking and reproducing the lower head 8 and the upper head 3, but also the position adjustment can be automated at high speed by eliminating the need for feeling or bones in the position adjustment. realized.

6) 8 Next, the mounting structure of the upper head 3 described above will be explained.

The mounting structure for the above-mentioned upper head 3 shown in FIG. For example, a flexible upper gimbal 3a, made of plastic material or the like, is mounted via an insulating upper head stand 15, and is mounted on the upper carriage 4 described above.
has a shielding function to protect the magnetic head as a signal conversion element of a magnetic recording device from disturbance noise such as electric field noise and magnetic field noise. If a grounding relationship is established with the head, it will act as an antenna for the head. In order to effectively fulfill the above-mentioned shielding function, the head and the upper carriage 4 must be electrically and magnetically non-contact. The upper head stand 15 is preferably constructed in a conductive relationship.The upper head stand 15 is made of, for example, a plastic material as described above, and is an insulating and non-magnetic material. Uke has the role of effectively fulfilling the shield function.

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 is suitable for mounting the upper head 3 via the flexible upper gimbal 3a described above, for example. Although there are restrictions on the shape, etc., by intervening the upper head stand 15, even a complicated mounting part shape can be provided without difficulty.

7) First, the state of insertion and removal of the 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 indicated by the arrow 19, which abuts and biases the arm 4i of the upper carriage 4 described above in FIGS. 1 and 2. The upper head 8 is rotated by being biased into contact with the lower head 8 and the disk 2, thereby configuring a state in which the disk 2 can be inserted and removed, and the rotating state In this case, the upper carriage 4 is in contact with a cover 23 provided with a smooth sheet 24 made of, for example, Teflon material and 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 that has been rotated due to contact bias is prevented from moving one rotation position by contacting the cover 23 provided with the smooth sheet 24 made of, for example, Teflon material. 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 mark 19. Depending on the amount of urging force, even if the amount of contact force 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 4 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 In order to avoid collisions between the magnetic recording devices 2a and 2a, a large amount of space is required, making it difficult to make the magnetic recording device thinner.

On the other hand, in view of the recent tendency for systems equipped with magnetic recording devices to be lighter, thinner, shorter, and smaller, there has been an increasing demand for realizing extremely thin magnetic recording devices.

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 for stopping the rotational position of the upper carriage 4 by abutting against the cover 23, when the upper carriage 4 is actively brought into rotational contact with the cover 23 configured to have a fixed position structure, the upper head 3 can ensure a stable rotational position with little variation, and eliminates the above-mentioned extra gap, making it easy to realize a thin magnetic recording device.

A smooth sheet 24 made of, for example, Teflon material, which is provided on the cover 23, eliminates the contact sound when the upper carriage 4 is brought into rotational contact, and also prevents the rotational contact state, that is,
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 amount of expansion and contraction 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 ultra-thin and flexible plate-shaped metal material of about 5l- (0.3mm), and the amount of expansion and contraction due to environmental changes in temperature and humidity is extremely stable, and according to the basic configuration. 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-mentioned second carriage of the present invention can be used. 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 an ultra-small medium, the above-described present invention is advantageous when the upper carriage 4 is made of an ultra-thin and flexible plate-shaped metal material of, for example, about 0.05 mm. It is possible to configure the function as a second carriage.

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.

1. Needless to say, some of the magnetic recording devices that have already been put into practical use include those in which the aforementioned medium outer diameter is approximately 8 inches, the medium outer diameter is approximately 5.25 inches, and the medium outer diameter is approximately 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, the present invention, for example, (0.05 mm)
The upper carriage 4, which is made of an extremely thin and flexible sheet metal material of about 0°3 mm, provides a magnetic recording device that is applicable to the medium outer diameter size. However, regarding the material composition of the upper carriage 4,
It should be noted that the structure can be easily constructed by selecting a plate having a required thickness from the above-mentioned thickness range of (0.05 mm) to (0.3 mm).

As described above, the second carriage structure in the magnetic recording device of the present invention, which has a rotating means that can rotate opposite to the first magnetic head, has a number of practical effects. In particular, for example (0,05 mm) to (0
The upper carriage 4, which is made of an ultra-thin and flexible plate-shaped metal material of about 3 mm), can be easily provided by processing means such as press processing, and has a simple structure and is inexpensive. This enables mass production of highly reliable magnetic recording devices.

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, other structures are completely 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.

It is a clamping element that clamps the medium, and is equipped with a pad 33 made of felt material made of fibers, etc., and is extremely thin and flexible, for example, about (0.05 mm) to (0.3 mm). The two suspensions 34a and the suspension 3 constitute the suspension 34a and the suspension 34b.
4b on both sides, the rigidity of the extremely thin and flexible plate metal material is improved to eliminate the flexibility of the parts other than the two suspensions 34a and 34b. As a means, a pad holder 34, which is a second carriage and has a protrusion 34c, 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 an arm 34j is provided at one end of the protrusion 34c. As shown in FIG. 9, the arm portion 4j includes a first arm portion 34j-1 and a second arm portion 34j-2 at the rain end position, and the third arm portion 54j-
1 and the second arm part 34j-2 are in contact with the upper carriage mounting part 7C of the lower carriage 7, and FIGS.
It constitutes a rotation fulcrum for the rotation means having the same function as described above with reference to FIG. 5, and prevents the suspension 34a and the suspension 34b from being twisted in a plane.

The suspension 34a and the suspension 3
4b, FIGS. 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.

This is something that 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, a felt material made of fibers is mounted as a clamping element for clamping the medium.
Regarding the shielding effect described above in FIG. 1 and FIG.
The pad holder 34 functions as a shield.

For example, (0.05 mm) to (0
, 3 mm), the pad holder 34 is made of an extremely thin and flexible plate-like metal material, and has a structure that surrounds the pad 33 so as to embrace it, as shown in FIG. can be easily provided by processing means such as press processing.

[Effects of the Invention] 545--5s- 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 the following effects. The second carriage has a simple structure and has a rotating means that can rotate opposite to the first magnetic head, and on the one hand, it protects against disturbance noise such as electric field noise and magnetic field noise, and furthermore, it protects against the temperature. Regardless of environmental changes such as humidity or temperature, the relative positional relationship between the recording/reproducing position of the medium and the magnetic head is always maintained as required.
It stabilizes the compatibility of the medium between magnetic recording devices and also eliminates fatal defects in magnetic recording devices. The second carriage made of a metal material can be easily provided by processing means such as press processing, and enables mass production of inexpensive and highly reliable magnetic recording devices. The practical effects of the invention are extremely large.

[Brief explanation of the drawing]

It is a detailed sectional view of the main part of the carriage. 1 to 7 show a 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. 10@, 11, 12, and 13 are diagrams for explaining conventional examples. FIG. 10 is a cross-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. Figures 12 and 13 show a conventional magnetic recording device with 3...
, upper head 4, upper carriage 4a, 4b, suspension 4e, 6a,
, , , , Notch 4h , , Peripheral wall 5 , , , Torsional coil spring 6 , , ,
, , , , Suspension holder 7 , , , , , ,
, , lower carriage 8 , , , , . 0. , lower head 9, , , , , frame 1100010000. Damper 13, Screw 15, Upper head stand 23, Cover 24, Smooth sheet 33 , , , , , , , , Pad 34 , , , , , Pad holder and above -61-64f Fig. 5 Fig. 6 Fig. 7 Fig. 10 Fig. 61r, 4'; 6 5ro Fig. 12 Figure 11 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; 1. A magnetic recording device characterized in that it is constructed of an extremely thin plate-shaped metal material having at least flexibility, and that it is constructed in an integral structure including the rotation means. 2) The magnetic recording device according to claim 1, wherein the holding element is constituted by a magnetic head and is mounted on the second carriage via an insulator. 3) The magnetic recording device according to claim 1, wherein the holding element is a pad and is mounted on the second carriage without intervening means. 4) Claims 1), 2), and 3, characterized in that the second carriage is made of a good conductor material.
) The magnetic recording device described in item 2. 5) Claims 1), 2), and 3, characterized in that the second carriage is made of a magnetic material.
) The magnetic recording device described in item 2.