JPS6387666A - Magnetic recorder - Google Patents

Abstract

PURPOSE:To prevent the degradation of a turning means by damping the turning of the second carriage by the turning means consisting of a very thin plate- shaped metallic part with a prescribed gap between the turning means and the second carriage. CONSTITUTION:The second carriage 4 consists of a plate-shaped metallic material which is very thin to have 0.05-0.3mm thickness and has a flexibility. The turning means consisting of the flexibility of suspensions 4a and 4b has a damper 11, which has an elasticity to stabilize turning, between a suspension holder 6 and suspensions 4a and 4b. The damper 11 is larger than the gap between the suspension holder 6 and suspensions 4a and 4b in the single body state; and when the damper 11 is set, it is compressed to cause a compressive reaction force. Thus, the damper 11 controls the second carriage 4 so that it is not turned beyond a required extent of turning even if oscillation, shock, or the like is applied at the time of turning the second carriage 4, and the degradation of the turning means is prevented.

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 is rotatable in opposition to the first magnetic head. A second carriage with possible retrieval means.

The magnetic recording apparatus includes a suppressing means for pressing the second carriage to bring the first magnetic head, the medium, and the clamping element into close contact with each other in a desired relationship.
The structure was as shown in FIG. 0, FIG. 1J, FIG. 12, and FIG. 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.
9 holds a guide shaft 60 as a guide means.

A lower carriage 57 as a first key 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 driven by the articulated movement of the moving drive means, and is guided by the guide shaft 60 to move along the arrow 6.
It has a structure that slides in two directions.

On the other hand, an upper head 53 as a second magnetic head is mounted, for example, via an upper gimbal 53a having flexibility.
A second carriage 54 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 the lower head 58 and the upper head 53. The upper carriage 54 is moved by the lower head 58 due to the flexibility of the suspension 560.
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 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 suspension 56 described above, a suspension suspension 56 is sandwiched between the lower carriage 57 and the spring receiver 66 as shown in FIG. screw 67
Regarding the fixing of the screw 67,
The relative positional relationship between the lower head 58 and the upper head 53 is set to a predetermined positional relationship and fixed in position.

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 move in a stick-slip manner, and the suspension 56 receives a torsional moment, causing the upper carriage 54 to vibrate slightly in the direction of the arrow 64 shown in FIG. Microvibrations similar to the direction of rotation of the disk 52 are 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.
10 In order to achieve the objective, 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 substantially arcuate deformation of No. 6 includes the shield material 61.
The degree of deformation varies depending on the mass of the lower carriage 54.

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 change in the distance between the disks 52 and 52, resulting in a radial positional shift with respect to the recording/reproducing position of the disk 52, that is, an "off! rack", which may impede the ability to increase the capacity of the magnetic recording device. However, it also has fatal flaws such as loss of media compatibility between magnetic 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 rib microns is not allowed for mutual contact, that is, worsens the head touch, making even recording and reproduction 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.If I had to point out this, I would suggest temporarily tightening the screw 67 to the required tightening torque, and tightening the suspension. 56 to the lower carriage 57
and the spring receiver 66 to form a moderately movable state, for example, by forcing a portion of the upper carriage 5.4 to move, the suspension 56 is moved, and the lower head 5.4 is moved. After adjusting the relative positional relationship between 58 and the upper head 53 to the required positional relationship, tighten the screw 67 again.
The screw was tightened to the required tightening 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 determined. 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 is biased to move a part of the upper carriage 54. When the suspension gear 9 56 is moved, the suspension gear 1 56 remains under bending and buckling stress, and when the movement biasing force applied to a part of the upper carriage 54 is released, the stress is removed. is in a released state, 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 (=f force), resulting in a difference from the intended position. Adjusting the required relative positional relationship between the lower head 58 and the upper head 53 as described above requires a lot of effort and effort to correct the difference from the desired position, and requires an immeasurable amount of time. Ta.

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 inches, that is, good head touch, the lower head 58 and the upper head 53 are pressed together with the disk 52 sandwiched between them by the spring 55 as described above. In this configuration, the floating portion of the spring receiver 66 is bent due to the reaction force of the spring 55, and in 3), the suspension 56 is moved between the lower carriage 57 and the spring receiver 66. It is not easy to create a state in which the upper carriage 54 can be properly moved by compressing the upper carriage 54 between the upper carriage 54 and the upper carriage 56. After adjusting the relative positional relationship between the lower head 58 and the upper head 53 to the required positional relationship, tighten the screw 67 with the required torque to fix the position. The suspension 56 is connected to the lower carriage 57 and the spring receiver 66.
In other words, there is a change in the state of squeezing pressure between
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 similarly to 3), adjusting the required relative positional relationship between the lower head 58 and the upper head 530 requires a feeling of adjustment and a change in the relative positional relationship. It was labor-intensive and took 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 capable of rotating in opposition to the first magnetic head, is susceptible to disturbances such as vibrations and impacts, and the second carriage is susceptible to large vibrations due to the disturbances. When the rotating means is moved, the rotating means is plastically deformed and its mechanical durability is significantly deteriorated. In particular, when transporting a magnetic recording device, a dummy medium is used to prevent this deterioration. etc., and the second carriage was handled in a non-rotating state.

SUMMARY OF THE INVENTION The present invention is intended to solve these problems, and its purpose is to provide a simple structure so that when the second carriage swings greatly, it comes into contact with the second carriage and prevents the swinging. In other words, a rotation suppressing means is provided to suppress the rotation, so that even if the second carriage is subjected to external disturbances such as severe vibrations or shocks when the second carriage rotates, the second carriage is not rotated by the required amount. To prevent plastic deformation and deterioration of mechanical durability of the rotating means, as described in (1) above,
Conventionally, in order to prevent deterioration of the rotating means during transportation of a magnetic recording device, a dummy medium or the like was attached to the second carriage in a non-rotating state, but the damper of the present invention According to this means, the durability is significantly improved, and the installation of a dummy medium or the like is not required, thereby providing 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 driving means.

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

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

In the magnetic recording device, at least a part of the second carriage is made of a flexible, extremely thin plate-shaped metal material, and the rotating means is controlled by the extremely thin plate-shaped metal part. The present invention is characterized in that a rotation suppressing means for suppressing rotation of the second carriage is disposed at a predetermined gap from the second carriage.

[Function] According to the above configuration of the present invention, the rotation suppressing means prevents the second carriage from moving even if the second carriage receives external disturbances such as harsh vibrations or shocks when the second carriage rotates. This is to restrict rotation so that it does not rotate more than the required amount of rotation.

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 clamping element is carried by a carrier carried on the second carriage and holds a medium for recording and reproducing together with the second magnetic head, and the clamping element is opposed to the first magnetic head. A second carriage having rotatable pivoting means.

a pressing means for pressing the second carriage to bring the first magnetic head, the medium, and the clamping 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 that chucks a disk 2, which is a medium for recording and reproducing, and rotates it in the direction of arrow 3 is fixed to a frame 9, and -
- On the other hand, the frame 9 has a guide shaft 10 as a guide means.
is held.

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 made of, for example, a flexible upper gimbal 3a and an upper 6712 base 15 that is made of an insulating material, such as a plastic material. Loaded through the
For example, it is made of an ultra-thin and flexible plate-shaped metal material of about (0.05 mm) to (0.3 mm), and one end has a flexible suspension 4a and a suspension 4b. Then, the rigidity of the ultra-thin and flexible plate-shaped metal material is improved to hold the two suspensions 4a and the suspension 4b on both sides. As a means for eliminating flexibility in the portion other than the suspension 4b, the upper carriage 4, which is a second carriage and has a protrusion 4c, has the following functions:
The upper carriage 4 is fixed to the lower carriage 7 by a screw 13 provided as a means for fixing the upper carriage 4, 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 upper carriage 2 notch 4 is supported by the lower carriage 7 by the supporting means, and the lower head 8 and the upper head 3 are structured to sandwich the disk 2.

The upper carriage 4 is connected to the suspensicon 4.
The flexibility of the suspension 4a and the suspension 4b constitutes a rotating means, and as will be described in detail later, it has a biasing structure that contacts and biases the arm 41 of the upper carriage 4 shown by the two-dot chain line in FIG. The upper carriage 4 is brought into contact with the body 17 and is biased toward the lower head 8 by the function of the rotating 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 lower head 8 and the upper head 3 perform recording and reproduction while sandwiching the disk 2, which is a medium for recording and reproduction, there are, for example, only a few The mutual contact condition that does not allow even submicron gaps, that is, the head touch, directly affects the recording and reproducing performance of a magnetic recording device.As a measure to improve the head touch, the lower head 8 and the upper head The head 3 constitutes a suppressing means for pressing the disk 2 while holding it therebetween.

Specifically, first, the torsion coil spring 5 is disposed, and the torsion coil spring 5 is supported by the spring support 7a extended to the lower carriage 7, and with torsion moment l-energy stored, one end is attached to the lower carriage. The other end presses the lower 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 of fixing the upper carriage 4 to the lower carriage 7 via the suspension 4a and the suspension hinge 4b described above, the suspension 4a and the suspension 4b, which are clearly illustrated in FIG. 2, are again integrated into an integral structure. As shown in FIG. 1, the holding portion 4d holding the upper carriage 4 is sandwiched between the partial carriage mounting portion 7C of the lower carriage 7 and the suspension holder 6 serving as a holding means for holding the upper carriage 4 therebetween. screw 13
Regarding the fixing of the screw 13,
The relative positional relationship between the lower head 8 and the upper head 3 is set to a predetermined required positional relationship and the positions thereof are fixed.

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 in a completely symmetrical manner and has two functions.

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 plurality of bosses 4 constitute a notch 4e in the shape of a letter V as shown in the figure, and a plurality of bosses 4 serve as means for positionally guiding the →-notch suspension holder 6 as shown in FIG.
On the other hand, the suspension holder 6 is provided with a guide 60b that engages with the post 4f and guides its position, and is located at approximately the same plane position as the notch 4e, and is approximately in the same position as the notch 4e. A notch 6a having the same shape is formed, and the holding portion 4d and the suspension holder 6 are combined as shown in FIG. 181), and when the jigs 18a and 18b are moved, the holding portion 4d and the suspension holder 6 are configured to move integrally.

Incidentally, as mentioned above, the holding portion 4d is, for example, (0°05m).
It is made of an ultra-thin and flexible plate-shaped metal material with a thickness of about 0.3 mm), and when it is clamped with the jigs 18a and 18b as described above, it will not deform due to the clamping force. As a means to prevent this, 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 metal material.

The structure of the upper gimbal 3a having riT flexibility on which the above-mentioned upper head 3 is mounted will be described in detail later, but the signal line 16 for transmitting and receiving 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 constructed by the flexibility of the suspension 4a and the suspension engine 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. It is constructed to be larger than the gap formed between the chiron holder 6 and the suspensions 4a and 4b, and when mounted 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 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) ~(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 directionality in the placement position of the shield.Of course, the shielding means should have a large surface area and a large thickness. As mentioned above, the structure of the present invention exhibits a shielding effect to the extent that the upper carriage 4 is
), and has a sufficiently effective surface area to protect the above-mentioned upper head 3 and the above-mentioned lower head 8 from the disturbance noise, etc. There is.

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.

The second carriage structure in the magnetic recording apparatus of the present invention, which faces the first magnetic head and has a rotating means capable of rotating by C, has been described above in a static state. Expand your explanation to include dynamic elements.

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

FIGS. 3 and 4 are detailed in views of the main parts of the carriage in the magnetic recording apparatus of the present invention, and show the rotating means of the upper carriage 4 described above in FIGS. 1 and 2, as well as the damper means. FIG. 2 is a diagram for explaining in more detail.

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

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 lower head 8 and the upper head 30 shown in FIG.
With the disk 2 being held between them, a pressing force P1. shown in the shaded area in the figure is applied. 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 contacts and urges the arm 41 of the upper carriage 4 described above in FIGS. The upper head 3 is moved away from the lower head 8 and the disk 2, and the disk 2 is in 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. Only suspension 4b is 5114
When the upper head 3 is displaced from the lower head 8 and the disk 2 shown in FIG. 4, the pressing force of the damper 11 is the pressing force shown in the shaded area in the figure. P3. It is composed of a pressing force P4, and the suppressing force P
4 is larger than the pressing force P3, that is, the upper carriage 4
The damper 11 is configured to increase gradually as it moves from the fixed side of the damper 11 to the upper head 3 side. The durability of the -1 suspension 4a and the suspension 4b is significantly improved, and conventionally, when transporting a magnetic recording device, it is necessary to prevent deterioration of the rotating means. The second carriage was handled in a non-rotating state by attaching a dummy medium, but the damper means of the present invention significantly improves the durability and eliminates the need for attaching a dummy medium.・C Provides an inexpensive and highly reliable magnetic recording device.

Furthermore, when the upper carriage 4 swings greatly due to disturbances such as strong vibrations and shocks, the upper carriage 4 has a tip provided at the tip of the suspension holder 6 as a means for suppressing the rotation of the upper carriage 4. The suspension 4a and the suspension 4b are designed to come into contact with the portion 6c and suppress their swinging, and the suspension 4a and the suspension 4b are not plastically deformed and have improved mechanical durability, and are similar to the cover described above in FIG. Even if 23 is not killed, the above-mentioned damper 11
This objective can be achieved even if the rotation suppression means of the present invention is not used, and it goes without saying that the rotation suppression means of the present invention can prevent severe vibrations, shocks, etc. that occur during transportation of magnetic recording devices, etc., as described above. To provide an inexpensive and highly reliable magnetic recording device in which it is not necessary to handle the second carriage in a non-rotating state by installing a dummy medium or the like to prevent deterioration of the rotating means. It is something.

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
) ~ (0.3 mm) It is constructed from an extremely thin and flexible plate-shaped metal material with a culm thickness, and it is extremely lightweight, eliminating the need for shielding materials 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 having flexibility, for example, on which the lower head 8 described above in FIG. This is explained in detail in the figure.

Fig. 6 is a detailed view of the gimbal, and Fig. 7 shows in detail the state in which the head is mounted through the gimbal of Fig. 6.
- An off-track explanatory diagram illustrating the mechanism of the rack.

Although FIG. 6 is explained using the lower gimbal 8a described above in FIG. 1 as an example, the upper gimbal 3l-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 flexible lower gimbal 8a 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 -F head 3 is mounted on the upper carriage 4 via the upper head stand 15 described above in the figure is as shown in FIG. 7, and as described above in FIGS. When the upper head 3 grips the disk 2 and presses it with a required pressing force, the lower gimbal 8a and the upper gimbal 3a each deform and stabilize themselves.

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-I sag caused by this mechanism occurs when the suspension structure formed on the upper carriage is deformed into a substantially arched shape, as described above in FIGS. 12 and 13 of the conventional example. However, in the above-described rotation means of the present invention, as described in detail in FIGS. 3 and 4, the damper 11 moves the suspension 4a, suspension 4b, and arm 4j to the upper carriage mounting portion. 7
C, 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 pivot point, and the upper carriage 4 is pressed against the upper carriage 4C. There is no sinking of the 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) 8 Next, explanation will be given 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 above in FIG. 1 between the suspension engine holder 6 and the suspensions 4a and 4b. The damper 11 has a structure in which the suspension 4a and the suspension engine 4b are pressed against the upper carriage mounting portion 7C of the lower carriage, 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 4 at the left and right positions in FIG.
j-1 and the second arm portion 4j-2,
The arm portion 4j-1 and the second arm portion 4j-2 come into contact with the upper carriage mounting portion 7C and constitute a rotation fulcrum of the rotation means detailed in FIGS. 3 and 4, and Upper carriage 4
are the suspension 4a and the suspension 4b.
This prevents the plane twisting of . . , suppresses the slight 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 head 3 shown in FIG. 1 does not cause a relative positional shift 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 and the magnetic This is extremely effective in increasing the capacity of recording devices.

3) 9 Next, the head position adjustment means will be explained. Ru.

In the conventional magnetic recording apparatus, as mentioned above, the recording and reproducing positions of the medium are standardized and defined in order to maintain data compatibility, and in particular, the positions of the lower head 8 and the upper head 3 shown in FIG. The default value of the relative 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 two-dot chain lines in FIG. , 8b is moved, and the suspension holder 6 and the holding part 4d are moved.
It is constructed in a structure that allows the driven position to be moved integrally.
As mentioned above, even if the jigs 18a and 18b are used to clamp and tighten, the clamping force is not received by the suspension holder 6, which is a highly rigid body, and the suspension holder 6, which is made of a thin and flexible plate-shaped metal material, for example, Holding part 4 of upper carriage 4
d moves to a driven position integrally with the suspension holder 6 without deformation, and the upper carriage 4
The position adjustment does not generate stress that would affect the position of the upper head 3 even slightly, and the correspondence between the above-mentioned position adjustment amount and the position adjustment amount of the upper head 3 is clear,
The position adjustment of the upper head 3 has become extremely stable and easy, and high-speed automation of the position adjustment has been realized.

On the other hand, the -upper carriage 4 is, for example, (0
, 05rnm) to (0.3mm) and is made of an extremely thin and flexible plate metal material, and when gripped and crimped with the jigs 18a and 18b as described above, Originally, 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, the clamping force is not received by the holding part 4d. As a means of preventing deformation due to the clamping force even if a situation occurs in which the gripping force is stopped, one end of the holding portion 4d is bent as shown in FIG. Since the rigidity of the sheet metal material has been improved, even if it is clamped with the jigs 1'8a and 18b as described above, it will not be deformed by the tM force of the clamps, and the suspension holder 6
The position is moved integrally with (mo), and the position adjustment is exactly the same as the above-mentioned content.

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 formed by bending one end of the holding portion 4d, but while maintaining the flexibility of the →)' suspension 4a and suspension 4b,
A reinforcing means (not shown) in which a part of the holding part 4d is formed with a protruding part that is thicker than the plate thickness of the holding part 4d can achieve exactly the same function as described above.

Regarding the head position adjusting 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.
i￥1 fin in Figure <combined with, for example, a circular jig 18a as shown by the two-dot chain line in Figure 2],
8b, the jigs 18a and 18b are moved, and the holding portion 4d and the suspension holder 6 are integrally moved to a driven position. As shown in FIG. 2, the suspension 4a and suspension 4b, which serve as the rotation means for the upper carriage 40, have no physical influence even if they are clamped by the circular jigs 18a and 18b. In other words, it is disposed at a position substantially opposite to the position of the rotating means, with reference to the position of the screw 13 serving as the fixing means for the upper carriage 4.

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. Ia ability 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 above-mentioned, for example, circular jig 1 is compressed so as to be moderately movable.
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 tightening torque and fixing it in position, for example, when temporarily tightening the screw 3, the above-mentioned holding part 4d may be temporarily tightened by exceeding the required tightening torque. Even if a weak lock state occurs in the integral driven position movement of the →caspension holder 6 and the jigs 18a and 8b are forcibly moved, the position of the upper head 3 of the upper carriage 4 will not change. The positional movement biasing stress generated by the forced positional movement is not transmitted to the side, and as described above, the arrangement position of the position adjustment means is changed to the second position.
As shown in the figure, the position of the upper head 3 is substantially opposite to the position of the rotation means with reference to the position of the screw 13 as the fixing means of the upper carriage 4. It does not cause any phenomenon that would cause any change.

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/reproducing position of the medium specified with strict positional accuracy is determined. The 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 as shown in FIG. With reference to the position of the screw 13 serving as the fixing means for the upper carriage 4, a second
For example, a circular jig 18 as shown by the two-dot chain line in the figure.
a and ], and 8 b to clamp and tighten the jigs 18a and 1.
The stress generated from the clamping force and positional movement bias of the upper head 8b does not cause any phenomenon that would cause any change in the position of the upper head 3.
The jig 1 can be configured with a strong means for firmly gripping and holding the jig 1 and for holding the position.
If the above-mentioned screws 13 as fixing means for the upper carriage 4 are tightened while 8a and 18b are still in position, the suspension holder 6 and the holding portion 4d may be slightly loosened when the screws 13 are tightened. Position changes can be suppressed.

As described above, according to the position adjustment means of the present invention, it is not only easy to adjust the position of the upper head 3, but also the position fixation of the upper head 3 is extremely stable, and the feeling of the position adjustment and the bone etc. can be improved. This eliminates the need for position adjustment and realizes high-speed automation of position adjustment.

In the embodiments of the present invention, the screws 13 have been used as an example of fixing means for the upper carriage 4, but the fixing means may also be formed by caulking, welding, adhesion, 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 holding the disk 2 between the disks 2 and 3, 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 with the torsional moment energy 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), the head position adjustment means and the upper carriage 4 fixing means, and the upper carriage 9 flap 240 described above in FIG.
The suppressing force does not have any physical effect on the rotation means, etc., and the pressing force does not change, ensuring the above-mentioned good head touch and recording on the medium. While tracking and reproducing required signals with the lower head 8 and the upper head 3, the position can be easily adjusted to the required relative positional relationship. Even if the ridge 4 is fixed by the fixing means, 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 are transferred to the lower head 8 and the -
Not only is it possible to easily adjust the position to the required relative positional relationship while tracking and reproducing each with the upper head 3, but also high-speed automation of the position adjustment is achieved by eliminating the need for feeling or bones in the position adjustment.

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

The mounting structure for the upper head 3 shown in FIG.
For example, an upper gimbal 3a having flexibility, an upper head stand 15 made of, for example, a plastic material, and an insulator.
The above-mentioned -H 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. From the perspective of the upper carriage 4
Specifically, if a grounding relationship is established with the head as the signal conversion element, it will act as an antenna for the head. In order to effectively perform the above-mentioned shielding function, the head and the upper carriage 4 must be connected to each other. It is preferable to configure the upper head stand 1 so that it is electrically and magnetically non-conducting.
5, the upper head stand 15 is made of, for example, a plastic material as described above, is an insulator and non-magnetic material, and has the role of effectively fulfilling the shielding function of the upper carriage 4 described above. ing.

Incidentally, as mentioned above, the upper carriage 4 has, for example, (0,
0.05 mm) to (0.3 mm) and is made of an extremely thin and flexible plate-shaped metal material, and the above-mentioned upper head 3 is mounted via the flexible Nishin Pal 3a, 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) 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 indicated by the arrow 19, which contacts and biases the arm 41 of the upper carriage 4 described above in FIGS. 1 and 2. The upper head 3 is rotated by being applied with an abutting bias -V from the direction, and the upper head 3 is displaced from the lower head 8 and the disk 2, thereby configuring a state in which the disk 2 can be inserted and removed. In the moving state C2, 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 which has been rotated due to contact bias comes into contact with the cover 23 provided with the smooth sheet 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 contact biasing force that causes the biasing structure 17 to abut in the direction of the arrow 19. Even if the corresponding contact force amount varies slightly as shown in FIG. This results in large variations in the distance between the cartridges 2a and 2a, increasing the risk of collision with the cartridge 2a described above.

However, conventionally, the rotating position of the upper carriage 240 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 light of the recent trend toward lighter, thinner, and smaller systems equipped with magnetic recording devices, there has been an increasing demand for the realization of extremely thin magnetic recording devices.

Therefore, the above-mentioned upper carriage 4 of the present invention is provided with a stopper means that prevents the rotational position of the upper carriage 4 by abutting against a cover 23 provided with a smooth sheet 24 made of, for example, Teflon material. For example, 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 secure a stable rotational position with little variation, and as described above. By dividing the extra gap by tJN, it is easy to realize a thin magnetic recording device.

The smooth sheet 24 made of, for example, Teflon material, provided on the cover 23 is used to eliminate the contact sound when the upper carriage 4 is brought into rotational contact, and to maintain the rotational contact state, i.e., This reduces the friction between the upper carriage 4 and the cover 23 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. Regarding the stopper means of the present invention, the smooth sheet 2
Even if it does not have 4, 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 disposed on at least one of the surfaces that come into contact with the cover 23 and the upper carriage 40. 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 can be operated 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. ~
(0.3 mm), the amount of expansion and contraction due to environmental changes in temperature and humidity is extremely stable. The expansion/contraction amount cancellation 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 upper carriage 4 may be made of a flexible plate-like metal material, for example, about 0.05 mm thick, in accordance with the present invention. 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 useful for miniaturization of 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 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 can be easily constructed by selecting a material with the required thickness from the thickness range of (0.05 mm) to (0.3 mtn) mentioned above. I'll add it.

As mentioned above, the second carriage structure in the magnetic nμ 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 (
The upper carriage 4, which is made of an extremely thin and flexible plate-shaped metal material of about 0.3 mm), can be easily provided by processing means such as press processing, for example.
This makes it possible to mass-produce inexpensive and highly reliable magnetic recording devices with a simple structure.

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.

- 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 W4 fiber, etc., and is extremely thin and flexible, for example, about (0.05 mm) to (0.3 mm). It is made of a flexible plate-like metal material, and constitutes a suspension 34a and a suspension 34b having flexibility at one end, and the two suspensions 34
a and suspension 34b on both sides,
As a means for improving the rigidity of the extremely thin and flexible plate-shaped metal material and removing the flexibility of the portion excluding the two suspension resins 34a and 34b,
The pad holder 34, which serves as a second carriage and includes the 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, the suspension 34a and the suspension 34. A protruding portion 34c is provided as a means for eliminating flexibility in a portion other than b, and an arm portion 34j is provided at one end of the protruding portion 34c, and the arm portion 4j has a first arm at both end positions as shown in FIG.・Arm part 34j-
] and a second arm part 34j-2, the first arm part 34j-1 and the second arm part 34j-2 are in contact with the upper carriage mounting part 7C of the lower carriage 7, and the second arm part 34j-2 is in contact with the upper carriage mounting part 7C of the lower carriage 7, It constitutes a rotation fulcrum of the rotation means having the same function as that described above in FIGS. There is.

Then, the suspension 34a and the suspension 3
4b includes ¥S1 figure, figure 2, and figure 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 felt material made of #A'M1 quality is mounted as a clamping element for clamping the medium, and the pad 33 shown in FIGS. Regarding the shielding effect described above in FIG. 2, although it does not have any PA function, the pad holder 34 functions as a shield at least for the lower head 8 as the first magnetic head.

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] 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. Even if the second carriage has a rotating means that can rotate opposite the first magnetic head and the second carriage slides greatly, the second carriage will come into contact with the second carriage and the swinging will be prevented. That is,
A rotation suppressing means is configured to suppress rotation, and even if the second carriage receives external disturbances such as severe vibrations or shocks when rotating, the second carriage is not rotated beyond a required rotation amount. A dummy medium is conventionally used to prevent deterioration of the rotating means during transportation of a magnetic recording device, etc. by regulating the rotating means so that it does not move, thereby preventing plastic deformation and deterioration of mechanical durability of the rotating means. However, the damper means of the present invention significantly improves the durability and eliminates the need for installing a dummy medium. The present invention provides an inexpensive and highly reliable magnetic recording device.

Furthermore, the second carriage, at least a part of which is made of an extremely thin and flexible plate-shaped metal material, can be easily provided by processing means such as press processing, and is inexpensive and reliable. This makes it possible to mass-produce magnetic recording devices with high performance, and the practical effects of the present invention are extremely large.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a detailed cross-sectional view of main parts 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 top 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. 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
,,,,, Suspense holder 7,,,,,,,,,
, Lower carriage 8 , Lower head 9 , Frame 11 , Damper 13 , Screws 15, , , , Upper head stand 238 . ．． ．． ．． ．． ．． ．． ．． Cover 24, , Smooth sheet 33, . 2. , , , Pad 34 , , , , , Pad holder and above Fig. 5 Fig. 6 Fig. 10 Fig. 12 Fig. 13 (support) Fig. 11 2P JL rehearsal mark

Claims (1)

[Scope of Claims] 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 drive means, the first magnetic head being carried by a carrying means carried by the first carriage. a second carriage comprising a clamping element for clamping a medium for recording and reproducing together with the first magnetic head, and having a rotating means capable of rotating opposite to the first magnetic head; A magnetic recording device comprising: pressing means for pressing the second carriage to bring the first magnetic head, the medium, and the clamping element into close contact with each other in a desired relationship, wherein at least one of the second carriage A part thereof is made of a flexible, extremely thin plate-shaped metal material, and the extremely thin plate-shaped metal part constitutes the rotation means, and is separated from the second carriage by a predetermined gap. , a magnetic recording device characterized in that a rotation suppressing means for suppressing rotation of the second carriage is provided.