JP2000123338A - Magnetic head device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic head device capable of stably recording and/or reproducing data and also effectively suppressing the disconnection of the wire constituting coils of a magnetic head element. SOLUTION: In this magnetic head device, a bend 190 bending nearly in the parallel direction to the signal recording surface of a 1st or 2nd flexible disk is formed at one end side of the wire constituting the 1st, 2nd coils 141, 142 and the 2nd coil 156 for a head chip, and the displacement of the wire in company with the rocking of a head slider 133 and a 1st core part 138 which constitute the magnetic head part 105, is made possible by the bend 190.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head device for recording and / or reproducing data on a disk-shaped recording medium, and more particularly, to a magnetic head device adapted for a plurality of disk-shaped recording media having different recording densities. The present invention relates to a magnetic head device suitable for application to a magnetic head device.

[0002]

2. Description of the Related Art Conventionally, a magnetic disk device using a 3.5-inch-diameter magnetic disk (flexible disk) in which a signal recording portion is formed on a main surface of a flexible disk substrate as a recording medium has been used in personal computers. And other external storage devices such as office computers and word processors.

Such a magnetic disk device includes a magnetic head device, and records and / or reproduces data on a mounted flexible disk using the magnetic head device.

FIG. 30 shows an example of a magnetic head device provided in a magnetic disk device. The magnetic head device 300 shown in FIG. 30 is attached to a base (not shown) movably in the radial direction of a flexible disk 301 mounted in the magnetic disk device, and is fed in the radial direction of the flexible disk 301 by a head feed mechanism (not shown). It has a carriage body 302 to be operated.

A first head support arm 304 protrudes from the lower end of the carriage body 302 and extends to the lower surface of the flexible disk 301 placed on the disk table 303. The carriage body 30
A base end of a second head support arm 305 that extends on the upper surface of the flexible disk 301 placed on the disk table 303 so as to face the first head support arm 304. Is rotatably attached to the flexible disk 301 via a leaf spring 306 in a direction in which the flexible disk 301 approaches and separates therefrom.

The second head support arm 305 is
Due to the urging force of the leaf spring 306, the distal end is rotationally urged in a direction approaching the flexible disk 301 on the disk table 303.

[0007] First and second head support arms 304, 30 extended to the upper and lower surfaces of a flexible disk 301.
The first and second magnetic heads 307 and 308 are attached to the opposing surfaces on the distal end side of No. 5, respectively. The first and second magnetic heads 307 and 308 each include a magnetic head element whose magnetic gap is exposed on the side of the disk table 303 facing the flexible disk 301.

Further, the first and second head support arms 3
As shown in FIG. 31, data to be written to the flexible disk 301
Or a wiring board 309 serving as a relay circuit for supplying data read from the flexible disk 301 by the first and second magnetic heads 307 and 308 to a signal processing circuit (not shown).
Is provided. One end of a wire constituting a coil of a magnetic head element included in the first and second magnetic heads 307 and 308 is connected to a terminal portion of the wiring board 309.

The magnetic head device 300 rotates the second head support arm 305 in a direction approaching the flexible disk 301, so that the first head support arm 304
A first magnetic head 307 attached to the tip side of the
The flexible disk 301 on the disk table 303 is sandwiched between the second magnetic head 308 attached to the tip side of the second head support arm 305,
With the magnetic head element included in the first magnetic head 307 or the magnetic head element included in the second magnetic head 308,
Data is written to and / or read from the flexible disk 301.

By the way, the first and second magnetic heads 30
7, 308 are two orthogonal to each other as shown in FIG.
It is attached to the distal ends of the first and second head support arms 304 and 305 via a thin plate-shaped gimbal spring 310 that can be displaced in the axial direction. The gimbal spring 310 is formed by stamping a leaf spring.

The gimbal spring 310 has a center on the other surface side opposite to the surface on which the first and second magnetic heads 307 and 308 are mounted, on the first and second head support arms 3.
04 and 305 are supported by a pivot 311 protruding therefrom. First and second magnetic heads 3 mounted on a gimbal spring 310 supported by a pivot 311
07 and 308, the gimbal spring 310 is pivot 311
Following the elastic displacement around the center, the oscillating displacement is performed in the arrow A direction and / or the arrow B direction in FIG.

First and second magnetic heads 137 and 308
When recording and / or reproducing data on / from the flexible disk 301, as shown in FIG. 30, the slider comes into sliding contact with both main surfaces of the flexible disk 301 rotating integrally with the disk table 303. Flexible disk 30
1 is a disk table 303 which has flexibility.
When the flexible disk 30 is rotated integrally with the
In some cases, a vertical run-out may occur without a stable rotation in a horizontal plane parallel to the main surface of the first surface.

As described above, the flexible disk 301
The first and second magnetic heads 3
07 and 308 follow the displacement of the flexible disk 301 and swing in the direction of arrow A and / or the direction of arrow B in FIG. 32 to maintain a state of slidingly contacting the flexible disk 301 stably.

As a result, the magnetic head device 300 allows the first and second magnetic heads 307 and 308 to accurately access the recording tracks formed on the signal recording portion of the flexible disk 301, and Data can be stably recorded and / or reproduced.

Recently, a high-density flexible disk having a higher recording density than a commercially available flexible disk has been proposed. This high-density flexible disk has the same external dimensions as a conventional flexible disk, but has a storage capacity of 2 megabytes to several tens of megabytes to several hundreds of the conventional flexible disk.
It has increased dramatically to megabytes.

As a magnetic disk device that performs recording and / or reproduction on such a high-density flexible disk, from the viewpoint of convenience and the like, recording and / or reproduction on a high-density flexible disk is performed in a high-density recording mode. And a so-called backward compatible disk capable of performing recording and / or reproduction in a low-density recording mode with respect to a conventional flexible disk.

In a magnetic head device provided in a magnetic disk device that realizes such backward compatibility, a magnetic head portion has a higher magnetic head element corresponding to a high-density flexible disk and a lower magnetic head element corresponding to a conventional flexible disk. And a head element.

When the high-density flexible disk is mounted, the magnetic disk device rotates the high-density flexible disk at a rotation speed of, for example, about 3600 rpm, and writes or reads data by the upper magnetic head element. Do. In addition, when a conventional flexible disk is mounted, the magnetic disk device may replace the conventional flexible disk with, for example, 300 r.
At a rotation speed of about pm, information is written or read by a lower magnetic head element.

[0019]

In the magnetic head device 300 for recording and / or reproducing data on / from the flexible disk 301, the first and second magnetic heads 307 and 308 have the gimbal spring 31 as described above.
0 through the first and second head support arms 304, 3
The flexible disk 301 is attached to the tip end of the flexible disk 301 and swings in accordance with the elastic displacement of the gimbal spring 310. Even in this case, the first and second magnetic heads 307,
The state in which the 308 is in stable sliding contact with the flexible disk 301 is maintained so that data recording and / or reproduction can be stably performed.

However, the magnetic head device 300
In the case where the flexible disk 301 is largely deflected, the first and second magnetic heads 307, 30
8, the one end of the wire constituting the coil of the magnetic head element rubs against the edge of the wiring board 309, and a break occurs at one end of the wire constituting the coil of the magnetic head element. In some cases.

In particular, in a magnetic head device for recording and / or reproducing data on a high-density flexible disk, as described above, the magnetic head of the magnetic head device has a magnetic head element corresponding to the high-density flexible disk. And a magnetic head element corresponding to a conventional flexible disk. In addition to the heavy weight,
Since the rotation operation is performed at a high rotation speed of about rpm, the swing amounts of the first and second magnetic heads 307 and 308 may be extremely large. For this reason, in a magnetic head device for recording and / or reproducing data on a high-density flexible disk, it is particularly desired to take measures against disconnection of a wire constituting a coil of a magnetic head element.

The present invention has been made in view of the above points, and stably records and / or reproduces data, and effectively suppresses disconnection of a wire constituting a coil of a magnetic head element. It is an object to provide a magnetic head device.

[0023]

A magnetic head device according to the present invention proposed to achieve the above object has a magnetic head element for writing and / or reading data to / from a disk-shaped recording medium. A magnetic head, a support arm for supporting the magnetic head at the tip, and disposed between the magnetic head and the support arm;
A magnetic head support member for supporting the magnetic head so as to be swingable with respect to the support arm; and a wiring board having a terminal to which one end of a wire constituting a coil of the magnetic head element is connected. In the magnetic head device, a curved portion that is curved in a direction substantially parallel to a signal recording surface of the disk-shaped recording medium is formed at one end of a wire constituting a coil of the magnetic head element. The part is capable of displacing the wire rod due to the swing of the magnetic head.

The magnetic head device according to the present invention configured as described above is provided in a recording and / or reproducing device such as a magnetic disk device, and the magnetic head is mounted on a disk mounted on the recording and / or reproducing device. The magnetic head slides or opposes the signal recording area of the recording medium to write and / or read information on the signal recording area of the disc-shaped recording medium.

The magnetic head is supported by a magnetic head support member so as to be swingable with respect to the support arm. The magnetic head is attached to one end of the support arm via a magnetic head support member. One end of a wire constituting a coil of the magnetic head element provided in the magnetic head is connected to a terminal of the wiring board.

When data is written to and / or read from a signal recording area of a disk-shaped recording medium by this magnetic head device, if the disk-shaped recording medium is run-out, the magnetic head is driven by the magnetic head. Swings to follow. As a result, the magnetic head is maintained in a state of being stably in sliding contact with the disk-shaped recording medium or a state of being stably opposed thereto.

When the magnetic head swings and displaces, the wires constituting the coil of the magnetic head element provided in the magnetic head include:
A force is applied in a direction to displace the wire. In the magnetic head device according to the present invention, at one end of the wire constituting the coil of the magnetic head element, a curved portion that is curved in a direction substantially parallel to the signal recording surface of the disk-shaped recording medium is formed. Since the wire can be displaced in accordance with the swing of the magnetic head, disconnection of the wire is effectively prevented.

[0028]

Embodiments of the present invention will be described below with reference to the drawings.

In this embodiment, a first disk cartridge containing a first flexible disk on which data is recorded at a first recording density, a second recording density higher than the first recording density, Data is recorded in the second
Of applying the present invention to a magnetic head device provided in a magnetic disk device capable of selectively recording and / or reproducing data by using one of the second disk cartridges accommodating the flexible disk. It is. The magnetic head device according to the present invention is not limited to this example, and uses a magnetic head device provided in a magnetic disk device using one or three or more types of disk cartridges, or uses a magneto-optical disk as a recording medium. Needless to say, the present invention can be applied to a magnetic head device and the like provided in a magneto-optical disk device.

Disk Cartridge First, prior to the description of a magnetic disk device having a magnetic head device to which the present invention is applied, first and second disk cartridges used in the magnetic disk device will be described. Each of the magnetic disks housed in these disk cartridges is formed to have a diameter of 3.5 inches.

As shown in FIGS. 1 and 2, the first disk cartridge 1 stores data of a first flexible disk 2 having a recording capacity of about 2 megabytes, in which data is recorded at a first recording density. It is.

The first flexible disk 2 housed in the first disk cartridge 1 has a disk substrate 3 made of a synthetic resin having flexibility.
The magnetic recording layer is formed on both principal surfaces of the recording layer to form a signal recording section. A circular center hole is formed in the center of the disk substrate 3, and a hub 4 is attached so as to close the center hole.

The hub 4 is formed of a magnetic material such as stainless steel or iron, and a cylindrical projection is fitted into the center hole, and a flange provided on the outer periphery of the projection is formed on the periphery of the center hole. And is attached to the disk substrate 3. At the center of the hub 4 is formed a rectangular spindle hole 4a through which a spindle of a disk rotation driving mechanism provided on the magnetic disk device side is inserted, and the disk rotation driving mechanism is eccentric to the center. A drive pin engaging hole 4b having a rectangular shape with which the provided drive pin is engaged is formed.

The first flexible disk 2 formed as described above is rotatably stored in a cartridge body 7 formed by butt-connecting a pair of upper and lower halves 5 and 6.

As shown in FIG. 2, a circular central opening into which a disk table constituting a disk rotation drive mechanism enters is provided at a substantially central portion on the lower surface side of the cartridge body 7 in which the first flexible disk 2 is stored. 8 are provided. As shown in FIGS. 1 and 2, rectangular recording and / or reproducing openings 9 and 10 are provided at opposing positions on the upper and lower surfaces of the cartridge body 7, respectively. These recording and / or reproducing openings 9 and 10 are located at the center in the left-right direction of the cartridge body 7 and are formed from the vicinity of the center opening 8 to the front side of the cartridge body 7.

In the first flexible disk 2 housed in the cartridge body 7, a part of the signal recording portion faces outward over the inner and outer peripheries through the recording and / or reproducing openings 9, 10. Is done.

Further, as shown in FIGS. 1 and 2, an erroneous recording prevention hole 11 for restricting data from being overwritten on the stored flexible disk 2 is provided at one corner on the back side of the cartridge body 7. Is provided. As shown in FIG. 1, the type of the flexible disk housed in the cartridge body 7 is provided in the other corner of the lower surface of the cartridge body 7 opposite to the side where the erroneous recording prevention hole 11 is provided. The disk identification hole 12 shown is provided. By detecting this disc identification hole 12,
It is identified that the flexible disk stored in the cartridge body 7 has a recording capacity of 2 megabytes.

On the lower surface side of the cartridge body 7,
As shown in FIG. 2, when the first disk cartridge 1 is mounted on a magnetic disk device, a positioning pin engaging hole for positioning the first disk cartridge 1 at a mounting position provided on the magnetic disk device side. 18, 19
Is provided. These positioning pin engagement holes 18, 1
As shown in FIG. 2, 9 is provided on both sides of the recording and / or reproducing openings 9 and 10.

The first disk cartridge 1 has the structure shown in FIG.
As shown in FIG. 2, a shutter member 13 for opening and closing the recording and / or reproducing openings 9 and 10 is attached. The shutter member 13 is formed in a U-shaped cross section by using a metal plate such as aluminum or stainless steel or by molding a synthetic resin, and has recording and / or reproducing openings 9 and 10 from the front side of the cartridge body 7. the fitted so as to cover, the direction of opening and closing these openings 9 and 10, that is movably mounted to FIGS. 3 and 4 in the arrow C ₁ direction and the arrow C ₂ direction.

The shutter members 13 extend on the upper and lower surfaces of the cartridge body 7 and have openings 9 and 1 for recording and / or reproduction.
Shutter portion 13a for covering the 0, the 13b, the shutter member 13 is moved in the arrow C ₁ direction in FIG. 1 and FIG. 2, the recording and / or when you move the opening 9 and 10 for reproduction in the open position opening These records and / or
Alternatively, rectangular cutout holes 14 and 15 for opening the openings 9 and 10 for reproduction are provided.

Note that the shutter member 13 is
3a and 13b are openings 9 and 10 for recording and / or reproduction.
To Figures 1 and 2 in the arrow C ₂ direction to close the, it is urged by a spring member (not shown) disposed in the cartridge body 7.

The second disk cartridge 21 is shown in FIG.
As shown in FIG. 4, data is recorded at a second recording density higher than the first recording density, and a second flexible disk 22 having a recording capacity of about 200 megabytes is stored. . The second disk cartridge 21 has the same size and thickness as the first disk cartridge 1 described above.

The second flexible disk 22 stored in the second disk cartridge 21 is the first flexible disk 22 described above.
As in the case of the flexible disk 2, a disk substrate 23 made of a synthetic resin having flexibility is provided, and a magnetic layer is applied to both main surfaces of the disk substrate 23 to form a signal recording portion. A circular center hole is formed in the center of the disk substrate 23, and a hub 24 is attached so as to close the center hole.

The hub 24 is formed of a magnetic material such as stainless steel or iron, and a cylindrical projection is fitted in the center hole, and a flange provided on the outer periphery of the projection is formed on the periphery of the center hole. And is attached to the disk substrate 23. A circular spindle hole 24a is formed in the center of the hub 24, through which a spindle of a disk rotation drive mechanism provided on the magnetic disk device side is inserted. The center of the hub 24 is eccentric to the disk rotation drive mechanism. A drive pin insertion hole 2 having a rectangular shape through which a drive pin to be provided is inserted.
4b is drilled.

The second flexible disk 22 formed as described above is rotatably housed in a cartridge body 27 formed by butt-connecting a pair of upper and lower halves 25 and 26.

A substantially central portion on the lower surface side of the cartridge main body 27 containing the second flexible disk 22
As shown in FIG. 2, a circular central opening 28 is provided in which a disk table constituting the disk rotation drive mechanism enters. As shown in FIGS. 3 and 4, rectangular recording and / or reproducing openings 29 and 30 are provided at opposing positions on the upper and lower surfaces of the cartridge main body 27. These recording and / or reproducing openings 29, 3
Numeral 0 is located at the center in the left-right direction of the cartridge main body 27 and is formed from the vicinity of the central opening 28 to the front side of the cartridge main body 27.

In the second flexible disk 22 stored in the cartridge body 27, a part of the signal recording portion faces outward through the inner and outer peripheries through the recording and / or reproducing openings 29 and 30. Is done.

By the way, the second flexible disk 2
Reference numeral 2 designates a signal recording unit up to the vicinity of the outer peripheral edge in order to realize a high capacity. The signal recording portion formed up to the vicinity of the outer peripheral edge of the second flexible disk 22 faces the outside of the cartridge body 27, and is used for recording and / or reproduction so that it can be accessed by the magnetic head on the magnetic disk device side. The openings 29, 30 are provided with the recording and / or reproducing openings 9, provided in the first disk cartridge 1 described above.
It is formed larger than 10. That is, the recording and / or reproducing openings 29 and 30 provided in the second disk cartridge 21 are formed to be enlarged to the vicinity of the front surface of the cartridge main body 27 as shown in FIG.

Further, at the other corner on the back side of the cartridge main body 27, as shown in FIGS. 3 and 4, erroneous recording prevention for restricting overwriting of data on the second flexible disk 22 stored therein is performed. A hole 31 is provided. The erroneous recording prevention hole 31 is provided at a position opposite to that of the first disk cartridge 1. Further, as shown in FIG. 4, a detection hole 32 is provided in one corner of the lower surface of the cartridge body 27 opposite to the side where the erroneous recording prevention hole 31 is provided. The detection hole 32 is provided at a position where the erroneous recording prevention hole 11 of the first disk cartridge 1 is provided. When the detection hole 32 is mounted on a magnetic disk device using only the first disk cartridge 1, the detection hole 32 is provided in the magnetic disk device. A device which is detected by an erroneous recording detection mechanism provided, prohibits recording of data on the second flexible disk 22, and prevents data recorded on the second flexible disk 22 from being erased at high density. It is.

As shown in FIG. 4, a second disk cartridge 2 is provided on the lower surface side of the cartridge body 27.
When the disk drive 1 is mounted on a magnetic disk drive, a positioning pin engaging hole 3 for positioning a mounting position provided on the apparatus side.
8, 39 are provided. These positioning pin engagement 3
8, 39 are provided so as to be located on both sides of the recording and / or reproducing openings 29, 30 as shown in FIG. As shown in FIG. 4, a disc identification hole 33 indicating the type of the flexible disk stored in the cartridge body 27 is provided on the lower surface of the cartridge body 27 so as to be adjacent to one of the positioning pin engagement holes 38 as shown in FIG. Is provided. By detecting the disk identification hole 33, it is determined that the flexible disk housed in the cartridge body 27 has a recording capacity of 200 megabytes.

Further, on the upper surface side of the cartridge body 27, it is located at one corner on the front side where the recording and / or reproducing openings 29, 30 are provided, and regulates the insertion direction into the magnetic disk device. A groove 40 for preventing erroneous insertion is provided.

The second disk cartridge 21 records and / or writes data in the same manner as the first disk cartridge 1.
Alternatively, a shutter member 43 for opening and closing the openings 29 and 30 for reproduction is attached. This shutter member 43 is
Like the shutter member 13 of the first disk cartridge 1, it is formed by using a metal plate such as aluminum or stainless steel or by molding a synthetic resin.

The shutter member 43 provided in the second disk cartridge 21 has a shutter portion 43 large enough to close the recording and / or reproducing openings 29 and 30.
a, 43b. The shutter portions 43a, 43b are connected to each other, and the shutter supporting portions 44, 45 having a U-shaped cross section for supporting the shutter member 43 on the cartridge body 27 are provided on the shutter portions 43a, 43b. It protrudes from both sides on the base end side, and is formed so as to form a substantially T-shape as a whole.

By the way, the second disk cartridge 2
1, recording and / or reproducing openings 29, 3
0 is formed near the front surface of the cartridge main body 27 so that the signal recording portion formed near the outer peripheral edge of the second flexible disk 22 faces the outside of the cartridge main body 27. Recording and / or reproducing openings 9 and 1 provided in the disc cartridge 1 of FIG.
It is formed larger than 0. In order to reliably open the recording and / or reproducing openings 29 and 30 thus enlarged, the shutter member 43 is provided on one of the shutter support portions 44 of the shutter member 43 as shown in FIG. When the recording and / or reproducing openings 29 and 30 are moved to the positions where they are opened, the notch recesses 46 that open the front side of the cartridge body 27 of the recording and / or reproducing openings 29 and 30 are formed. Is formed. That is, the notch concave portion 46 is formed in a portion of the shutter support portion 44 extending to the upper and lower surfaces of the cartridge main body 27.

The shutter member 43 formed as described above
Is a shutter 43 from the front side of the cartridge body 27.
a, 43b are recording and / or reproducing openings 29, 30;
The shutter portions 43a, 4
FIGS. 3 and 4 show the opening and closing of the openings 29 and 30 by the opening 3b.
Movably mounted on the middle arrow C ₁ direction and the arrow C ₂ direction.

Note that the shutter member 43 is
3a, 43b are openings 29, 3 for recording and / or reproduction.
3 and 4 in the arrow C ₂ direction to close the 0, is urged by a spring member (not shown) disposed in the cartridge body 27.

Magnetic Disk Device Next, a first disk cartridge 1 containing a first flexible disk 2 on which data is recorded at the first recording density configured as described above, and a first recording density Recording and / or reproducing data by selectively using one of the second disk cartridges 21 accommodating the second flexible disk 22 on which data is recorded at a second recording density having a high recording density. A description will be given of a magnetic disk drive that enables the above.

As shown in FIGS. 5 and 6, the magnetic disk device 50 has a device body 53 formed by abutting a pair of upper and lower covers 51 and 52 formed by bending a thin metal plate into a U-shaped cross section. A base 54 formed by a metal plate, an aluminum die-cast, or the like is housed in the apparatus main body 53.

A front panel 55 formed of a synthetic resin or the like is detachably attached to the front side of the apparatus main body 53. On the upper edge side of the front panel 55,
A cartridge insertion / removal opening 56 having a size sufficient to allow the first or second disk cartridge 1 or 21 to be inserted horizontally with the front side to which the shutter members 13 and 43 are attached as an insertion end is provided. Cartridge slot 56
When the first or second disk cartridge 1 or 21 is not mounted in the apparatus main body 53,
3 is closed by an opening / closing lid 57 attached to the front panel 55 so as to be rotatable inward.

On the lower edge side of the front panel 54, an eject button 58 for operating an eject mechanism for ejecting the first or second disk cartridges 1, 21 mounted in the apparatus main body 53 from the apparatus main body 53 is provided. ing.

The first or second magnetic disk 2 stored in the first or second disk cartridge 1, 21 mounted in the apparatus main body 53 is mounted on a base 54 disposed in the apparatus main body 53. A disk rotation drive mechanism 61 for driving the rotation of the disk 22 is provided. This disk rotation drive mechanism 6
As shown in FIG. 6, 1 includes a spindle motor 62 attached to a base 54, and a disk table 64 attached to a tip end of a spindle 63 of the spindle motor 62 so as to rotate integrally with the spindle 63. I have.

On the surface of the disk table 64 on which the first or second flexible disk 2, 22 is mounted, hubs 4, 24 attached to the flexible disks 2, 22 are provided.
Is attached to the magnet 65 for attracting the magnet. In addition, on the mounting surface side of the flexible disks 2 and 22 of the disk table 64, the drive pins engage with the drive pin engagement holes 4b or the drive pin insertion holes 24b provided in the hubs 4 and 24 at positions eccentric to the spindle 63. Drive pin 6 to be inserted
6 are protrudingly provided. The drive pin 66 is urged toward the outer peripheral side of the disk table 64 via an urging member such as a tension spring (not shown).

An electronic circuit board 70 is attached to the lower surface of the base 54. Various electronic circuits and detection switches are provided on the electronic circuit board 70.

The disk table 64 of the base 54
Is provided on the upper surface side thereof, a cartridge holder 71 constituting a cartridge holding member for holding the first or second disk cartridge 1 or 21 inserted into the apparatus main body 53 through the cartridge insertion opening 56. Has been established.

This cartridge holder 71 has cartridge holding portions 71a, 71b for holding both sides of the first or second disk cartridges 1, 21 inserted into the apparatus main body 53 on opposite sides, respectively. And it is formed in a thin housing shape whose lower side is open. The cartridge holder 71 holds the first or second disk cartridge 1 or 21 inserted into the apparatus main body 53 through the cartridge insertion / removal opening 56 and drives the disk by a cartridge loading mechanism incorporated in the base 54. The first or second disk cartridge 1, 21 held in the cartridge holder 71 is moved in the vertical direction between a position of the mechanism 61 separated from the disk table 64 and a position close to the disk table 64 side.
The first or second flexible disk 2 stored in
22 is loaded on the disk table 64 or the flexible disks 2 and 22 loaded on the disk table 64 are unloaded.

On the upper surface side of the base 54, the cartridge holder 71 is positioned between the base 54 and the cartridge holder 71, and the cartridge holder 71 is moved up and down in a direction in which the cartridge holder 71 approaches and separates from the disk rotation drive mechanism 61 disposed on the base 54. An elevating operation plate 72 constituting a cartridge loading mechanism to be operated is provided.

As shown in FIG. 6, cam pieces 73, 7 having inclined surfaces are provided on both sides of the lift operation plate 72 opposite to each other.
4 is formed rising. These cam pieces 73, 7
Support pins 69 protruding from both sides of the cartridge holder 71 are mounted on the top of the cartridge holder 71. And the elevating operation plate 72
Is by a biasing member, not shown, is moved biased in direction of arrow X ₂ in FIG. Further, on the rear side of the base 54, when the lifting operation plate 72 is moved to the rear side of the direction of arrow X ₁ in FIG. 6, the lock for locking the lifting operation plate 72 is moved rearward position A lever 77 is provided.

[0068] Further, on the rear side of the base 54, although not shown, the ejecting motor is arranged to be operated to move the direction of arrow X ₁ in FIG. 6 against the urging force of the elevating operation plate 72 urging member Have been.

The elevating operation plate 72 is provided with
When the insertion ready the first or second disc cartridge 1 or 21 into the apparatus main body 53 through 6 are moved operated by 6 in the direction of arrow X ₁ ejecting motor, the rear side of the base 54 Has been moved to the position. At this time, the elevating operation plate 72 is locked by the lock lever 77 and is held at a position moved to the rear side of the base 54. When the elevating operation plate 72 is locked by the lock lever 77, the cartridge holder 71 supports the support pin 69 on the upper surface side of the cam pieces 73 and 74 of the elevating operation plate 72, and It is held at a raised position separated from the table 64.

When the cartridge holder 71 is held at the raised position, the open end on the front side is placed in a state of facing the cartridge insertion opening 56. Here, when the first or second disk cartridge 1 or 21 is inserted into the cartridge holder 71 through the cartridge insertion opening 56, the lock lever 77 is rotated by the first or second disk cartridge 1 or 21. You. When the first or second disk cartridge 1 or 21 is inserted to the cartridge insertion position in the cartridge holder 71, the lock of the lock lever 77 to the lifting operation plate 72 is released.

[0071] lifting operation plate 72, the lock by the lock lever 77 is released, in FIG. 6 receives the biasing force of the biasing member is operated to move direction of arrow X _2. When the lifting operation plate 72 is moved in the direction of arrow X ₂ in FIG. 6, the support pin 69 moves along the inclined surface of the cam piece 72 and 73, the cartridge holder 71 of FIG. 6 in the arrow L ₁ direction of the base 54 side The cartridge holder 71 is lowered to the disk table 64 side.
The first or second disk cartridge 1 held in the
21 is a cartridge mounting portion 7 configured on a base 54
5 and the first or second flexible disk 2, 22 stored in the first or second disk cartridge 1, 21 is loaded onto the disk table 64. At this time, the first or second flexible disk 2 or 22 is
The drive pin 66 is inserted through the spindle holes 4a, 24a provided in the drive pin 24 and the drive pin engagement hole 4b or the drive pin insertion hole 24b.
b, the hubs 4, 24 are attracted by the magnet 65 and placed on the disk table 64, and become rotatable integrally with the disk table 64.

Here, when the spindle motor 62 is driven, the first or second flexible disk 2 or 22 is driven to rotate integrally with the disk table 64.

Note that the first flexible disk 2
By being driven to rotate integrally with the disk table 64, the drive pin 66 is pressed against one side surface on the outer peripheral side of the drive pin engagement hole 4 b, so that the corner of the rectangular spindle hole 4 a is The centering of the spindle 63 is adjusted so that the center of rotation coincides with the center of rotation of the spindle 63.

The cartridge mounting section 75 has a first
Alternatively, positioning pins are provided which are relatively engaged with positioning pin engagement holes 18, 19 or 38, 39 provided in the second disk cartridges 1, 21. These positioning pins engage with the positioning pin engagement holes 18, 19 or 38, 39, so that the horizontal direction and height direction of the first or second disk cartridge 1, 21 mounted on the cartridge mounting portion 75 can be adjusted. Is positioned.

The first or second flexible disk 2,
When the disc cartridge 22 is loaded on the disc table 64, the first and second disc cartridges 21 and 21 are positioned in the horizontal and height directions by the positioning pins and are mounted on the cartridge mounting portion 75.
The first or second flexible disk 2, 22 is located at a substantially intermediate position between the upper and lower surfaces of the cartridge bodies 7, 27 and is driven to rotate so as not to contact the upper and lower inner surfaces of the cartridge bodies 7, 27.

Further, when the shutter members 13 and 43 provided on the first or second disk cartridges 21 and 21 are inserted into the cartridge holder 71, the lock lever 77 is provided.
The recording and / or reproducing openings 9, 10 or 29, 30 are moved in a direction to open the recording and / or reproducing openings 9 by a shutter member opening pin 78 provided integrally therewith.
Release 9, 30.

The first or second flexible disk 2,
The first or second cartridge mounted on the cartridge mounting portion 75 so that the cartridge 22 is loaded on the disk table 64.
In order to eject the disc cartridges 1 and 21 from the apparatus main body 53, an eject button 58 provided on the front panel 54 is operated. When the eject button 58 is operated, the ejecting motor is driven, the lifting operation plate 72 by the motor is moved during operation 6 in the arrow X ₁ direction against the biasing force of the biasing member. The lifting operation plate 72 is shown in FIG.
Once moved to the intermediate direction of arrow X _1, the support pin 69 moves along the inclined surface of the cam piece 72 and 73, upward in the direction in which the cartridge holder 71 is separated from 6 in the arrow L ₂ direction of the base 54 , The first or second disk cartridge 1, 21 is raised from the cartridge mounting portion 75 formed on the base 54, and the first or second flexible disk 2, 22 is unloaded from the disk table 64. .

When the cartridge holder 71 is moved to the raised position away from the base 54, the lock lever 77 is rotated, and the first or second disk cartridge 1, 21 held by the cartridge holder 71 is moved to the cartridge holder 71. Is pressed in the direction of discharging from the cartridge, and a part thereof is projected from the cartridge insertion / removal opening 56.

When the lock lever 77 is rotated to press the first or second disk cartridge 1 or 21 in the direction of being ejected from the cartridge holder 71, the lock lever 77 engages with the elevating operation plate 72, holding the plate 72 to the eject position is moved in FIG. 6 the arrow X ₁ direction against the biasing force of the biasing member.

As shown in FIG. 6, the operator is projected on the upper surface side of the base 54 on the electronic circuit board 70 provided on the lower surface side of the base 54 provided in the apparatus main body 53. And the first or second disk cartridge 1 or 2
1, a disc-in detection switch 81 for detecting whether or not the disc cartridge 1 is mounted, and a first or second disc cartridge 1,
First and second erroneous recording prevention detection switches 82, 8 for detecting whether or not the erroneous recording prevention holes 11, 31 provided in the opening 21 are open.
3 are provided. Also, on the electronic circuit board 70,
As shown in FIG. 6, a disk capacity detection switch 84 for detecting the disk identification hole 33 provided in the second disk cartridge 21 is provided. The disk capacity detection switch 84 is provided at a position corresponding to the disk identification hole 33 provided in the second disk cartridge 21 mounted on the cartridge mounting section 75.
The capacity of the magnetic disk housed in the disk cartridge is detected by detecting the presence or absence of a disk identification hole provided in the disk cartridge mounted on the disk cartridge 5.

On the electronic circuit board 70, a light-emitting display 85 for displaying the operating state of the magnetic disk device 50 is provided. The light-emitting display 85 has a display unit having a front panel 55 attached to the front side of the apparatus main body 53.
The operation state of the magnetic disk device 50 is displayed by exposing to the outside through an opening provided in the magnetic disk device 50 and emitting or extinguishing the light according to the operation state of the magnetic disk device 50.

On the base 54, a disk table 64
Data recording and / or reproduction is performed by accessing signal recording portions formed on both main surfaces of the first or second flexible disk 2 or 22 loaded on the disk table 64 and rotated integrally with the disk table 64. Magnetic head device 1
00 is provided. Hereinafter, the magnetic head device 10
0 will be described in detail.

[0083] The magnetic head device a magnetic head device 100, as shown in FIG. 6, located on the inner side of the apparatus main body 53, a first or second disc cartridge 1 or 21 is attached to the main body 53 They are arranged to face each other. Then, the magnetic head device 100
Is the first loaded on the disk table 64
Alternatively, first and second head support arms 102 and 103 are respectively provided on both main surfaces of the second flexible disks 2 and 22 on which signal recording portions are formed, and the tips of the head support arms 102 and 103 are provided. First or second on the side
Magnetic head unit 10 for accessing signal recording units formed on both main surfaces of flexible disks 2 and 22, respectively.
5,105 are attached.

The magnetic head device 100 according to the present invention will be described in further detail. As shown in FIGS. 7 to 9, the magnetic head device 100 has magnetic head portions 105, 105.
And second head support arms 102, 1 supporting
03 are connected, and these head support arms 102, 10
And a head carriage main body 106 which is moved in the radial direction of the first or second flexible disk 2 or 22 loaded on the disk table 64 integrally with the disk table 64.

The head carriage main body 106 is formed using a synthetic material such as a synthetic resin, aluminum, or a magnesium alloy. Head carriage body 1
Reference numeral 06 is supported by a main guide shaft 107 and a sub guide shaft (not shown) disposed on the base 54 in parallel with the radial direction of the first or second flexible disk 2 or 22 loaded on the disk table 64. It is supported by. A pair of coil support pieces 108 and 109 project from both sides on the base end side of the head carriage body 106, and a voice coil motor (not shown) disposed on the base 54 via the coil support pieces 108 and 109. The driving coils 110 and 111 to be inserted into the yoke are mounted. The head carriage main body 106 includes the driving coil 1.
When the drive current is supplied to the first and second discs 10 and 111, the first or second disc loaded on the disc table 64 is controlled.
The flexible disks 2 and 22 are moved in the radial direction.

The first and second head supporting arms 102 and 103 connected to the head carriage main body 106 are connected to a connecting plate 11 serving as a connecting portion to the head carriage main body 106.
2 and a head support spring 113 attached to the distal end side of the connection plate 112. The connecting plate 112 is formed using a synthetic material such as a synthetic resin or aluminum or a magnesium alloy.
Is formed using a leaf spring. Head support spring 1
As shown in FIG. 7, the reference numeral 13 is formed in a substantially triangular shape tapering toward the distal end, and the magnetic head portion 105 is attached to the distal end. The head support spring 113 to which the magnetic head portion 105 is attached has a base end side fixed to a distal end side of the connection plate 112 using a fixing screw 114.

The connecting plate 112 constituting the first head supporting arm 102 is integrally extended from one side of the lower end side of the head carriage main body 106. That is, as shown in FIG. 10, the first head support arm 102 is fixed to the head carriage main body 106, and is below the first or second flexible disk 2, 22 loaded on the disk table 64. Extending towards the main surface of the side.

On the other hand, the second head support arm 103
The magnetic head unit 105 attached to the distal end side is close to and separated from the magnetic head unit 105 on the first head support arm 102 side. Supported.
That is, the second head support arm 103 is
A pair of support shafts (not shown) projecting from both sides on the base end side of the head 12 are engaged with shaft engagement grooves (not shown) formed on the upper end surface side of the head carriage main body 106 and are attached. Arrow E in FIGS. 10 and 11
It is attached so as to be rotatable in the direction and the arrow F direction.

The second head support arm 103 is moved in the directions indicated by arrows E and F in FIGS.
It is rotated in the direction. Second head support arm 103
Are locking pieces 11 protruding from both sides on the distal end side of the connecting plate 112.
As shown in FIGS. 6A and 6B, as shown in FIG. 6, by locking both sides of the magnetic head device entrance opening 118 formed in the cartridge holder 71, the arrows in FIGS. E direction and arrow F
It is rotated in the direction.

Further, the second head support arm 103
As shown in FIG. 8, the torsion coil spring 1 disposed between the connecting plate 112 and the head carriage main body 106
20, the magnetic head portion 105 on the distal end side is urged to rotate in the direction of arrow E in FIG. 10 which is close to the magnetic head portion 105 on the first head support arm 102 side.

As shown in FIG. 8, a torsion coil spring 120 for urging the second head support arm 103 to rotate is provided with a support plate 122 attached to the upper end surface of the head carriage main body 106 via a fixing screw 121. And is prevented from falling off from the head carriage main body 106.

Then, the second head support arm 103
When the cartridge holder 71 is lifted from the base 54 and raised to an eject position where the first or second disk cartridges 1, 21 can be inserted and removed, the arrow F in FIG. Pivoted in the direction. At this time, between the second head support arm 103 and the first head support arm 102, the magnetic head units 105, 105 attached to the distal ends of the first and second head support arms 102, 103 are brought into contact. space H ₂ sufficient to be inserted first or second disc cartridge 1 or 21 without constitute.

Further, the second head support arm 103
The first or second disk cartridge 1 or 21 is inserted into the cartridge holder 71, and the cartridge holder 71
Is lowered toward the base 54, the torsion coil spring 12
Upon receiving the urging force of 0, the cartridge holder 71 is rotated in the direction of arrow E in FIG. When the second head support arm 103 is rotated in the direction of arrow E in FIG.
03, the magnetic head unit 105 attached to the tip side
As shown in FIG. 10, the recording medium enters the first or second disk cartridge 1, 21 held by the cartridge holder 71 via the recording and / or reproducing opening 9, 10, or 29, 30 opened. Then, it comes into contact with the upper main surface of the first or second flexible disk 2 or 22 loaded on the disk table 64.

The cartridge holder 71 descends toward the base 54, and the first holder held by the cartridge holder 71
Alternatively, the second disk cartridges 1 and 21
When the magnetic head unit 105 is mounted on the cartridge mounting unit 75 configured above, the magnetic head unit 105 mounted on the distal end side of the first head support arm 102 is held by the cartridge holder 71 as shown in FIG. In the first or second disk cartridges 1, 21, released recording and / or
Alternatively, it enters through the openings 9, 10 or 29, 30 for reproduction and comes into contact with the lower main surface of the first or second flexible disk 2, 22 loaded on the disk table 64.

The first and second head support arms 102,
Magnetic heads 105 and 10 attached to the distal end of
5 comes into contact with both main surfaces of the first or second magnetic disks 2 and 22 on the disk table 64, the first and second magnetic disks
As shown in FIG. 10, the head support arms 102 and 103 of the first and second disk cartridges 1 and 21 do not contact the first or second disk cartridges 21 and 21 mounted on the cartridge mounting portion 75, respectively. 21 extend on the upper and lower surfaces. That is, these magnetic head units 1
05 and 105 are the first and second head support arms 10.
2, 103 are first or second disk cartridges 1,
The cartridge enters the cartridge main body 7, 27 while being extended on the upper and lower surfaces of the first or second disk cartridge 1, 21 without contacting the cartridge main body 21, 27.
It is formed to have a 7 first or the height H ₃ which can contact the both main surfaces of the second flexible disc 2,22 are rotated at an intermediate position of the upper and lower surfaces of the.

On the back side of the magnetic head device 100, data to be recorded on the first flexible disk 2 or the second flexible disk 22 located on the carriage body 106 as shown in FIG. The data is supplied to the magnetic head unit 105, or data read from the first flexible disk 2 or the second flexible disk 22 by the magnetic head unit 105 is supplied to a signal processing circuit (not shown) provided on the electronic circuit board 70. And a recording / reproducing IC circuit 123 are provided. The recording / reproducing IC circuit 123 includes, for example, an electronic component such as an IC chip mounted on a flexible wiring substrate having flexibility.
06 is attached with an adhesive or the like. Also,
The recording / reproducing IC circuit 123 includes a connector (not shown), and the electronic circuit board 70 via the connector.
It is connected to a signal processing circuit (not shown) provided above.

The first and second head support arms 1
As shown in FIGS. 7 to 9, a flexible wiring board 124 having flexibility is provided on the head support spring 113 on the distal end side where the magnetic head portions 105, 105 are mounted. Have been. The flexible wiring board 124 serves as a relay board between the recording / reproducing IC circuit 123 and the magnetic head unit 105. One end of the flexible wiring board 124 is located on the base end side of the head support spring 113, and the other end is the head support spring. The tip side of the spring 113 and the magnetic head 105
It is provided over the upper part.

To one end of the flexible wiring board 124, first ends of connection wires 125, 125 for electrically connecting the recording / reproducing IC circuit 123 and the flexible wiring board 124 are soldered. Terminal region 126 is provided. That is, the flexible wiring board 124 and the recording / reproducing IC circuit 123 have one end connected to the first terminal region 126 of the flexible wiring board 124 and the other end connected to the recording / reproducing IC circuit 123. It is electrically connected via 125.

The other end of the flexible wiring board 124 is soldered to one end of a wire constituting a coil, which will be described later, provided on the magnetic head 105 and provided in the magnetic head 105. A terminal region 127 is provided. The magnetic head portion 105 is formed by soldering one end of a wire constituting a coil to the second terminal area 127 of the flexible printed circuit board 124, so that the flexible printed circuit board 124, the connecting wire 125, and the recording / reproducing IC are formed.
The circuit 123 is connected to a signal processing circuit (not shown) provided on the electronic circuit board 70 via the circuit 123.

[0100] The magnetic head unit Next, the first and second head supporting arm 102, 103
The magnetic head unit 105 attached to the front end of the magnetic head will be described. Since the magnetic head units 105 attached to the distal ends of the head support arms 102 and 103 have a common configuration, only one of them will be described in the following description.

As shown in FIG. 12, the magnetic head unit 105 used in the magnetic disk device according to the present invention has a low-capacity recording capacity, and the low-density first flexible disk 2 is a disk table 64. When loaded in the first flexible disk 2, a first head chip 131 used for recording and / or reproducing data on and from the first flexible disk 2 and a high recording density type When the second flexible disk 22 is loaded on the disk table 64, a head slider incorporating a second head chip 132 for high recording density for recording and / or reproducing data on the second flexible disk 22 133 is provided.

As shown in FIG. 12, the magnetic head portion 10 is provided on the base end surface of the head slider 133 opposite to the surface facing the first or second flexible disk 2 or 22.
5 is provided, and a first core portion 138 including a core forming member 135 and first and second bobbins 139 and 140 attached to both sides of the core forming member 135 is provided. First and second parts constituting the first core part 138
As shown in FIG. 12, first and second coils 141 and 142 are wound around the bobbins 139 and 140.

The head slider 133 constituting the magnetic head unit 105 includes a first slider unit 146 in which the second head chip 132 is incorporated, and a first slider unit 1
46 and the first head chip 131
And a third slider portion 148 disposed so as to sandwich the first head chip 131 together with the second slider portion 147. That is, as shown in FIGS. 12 and 13, the head slider 133 has the first slider 146 and the first head chip 13 on both sides of the second slider 147 disposed at the center.
1 respectively, and further, the first head chip 131
The third slider portion 137 is joined to the side surface of.

On the surface of the head slider 133 facing the first or second flexible disk 2 or 22, a magnetic head portion 105 constituted by using the head slider 133 is provided with a first and second head support arms. 102,10
3, the two rail portions 149 are substantially parallel to the tangential direction R of the recording tracks formed on the first and second flexible disks 2 and 22 shown in FIG. , 150 are formed parallel to each other. The rail portions 149 and 150 are provided by the second flexible disk 22 in a direction indicated by an arrow R in FIG.
When rotated at a rotation speed of about 00 rpm, this second
An air film is formed between the head slider 133 close to the flexible disk 22 and the second flexible disk 22, and has a function of floating the head slider 133 from the main surface of the second flexible disk 22.

When the flexible disks 2 and 22 loaded on the disk table 64 and driven to rotate integrally with the disk table 64 rotate in the direction of arrow R in FIG. 12, the flexible disks 2 and 22 of the rail portions 149 and 150 are rotated. As shown in FIG. 12, front taper portions 151 and 151 are formed on the side where
2, 152 are formed. Front taper part 15
When the head slider 133 is in contact with the main surfaces of the flexible disks 2 and 22 in parallel, the head 151 has an inclination angle of, for example, about 0.5 ° with respect to the main surfaces of the flexible disks 2 and 22. The rear tapered portions 152 and 152 are formed on the main surfaces of the flexible disks 2 and 22 so as to have an inclination angle of, for example, about 10 ° with respect to the surface.

The first head chip 131 constituting the head slider 133 is provided with a recording / reproducing head 153 and an erasing head 154 near the center in the longitudinal direction. The erasing head unit 154 is provided at a position downstream of the recording / reproducing head unit 153 in the rotation direction of the flexible disk 2, 22 when the flexible disk 2, 22 rotates in the direction of arrow R in FIG. I have.

The recording / reproducing head section 153 provided on the first head chip 131 has a magnetic gap G 1 having a width slightly larger than the track width of the recording track formed on the first flexible disk 2. The erasing head 154 is located downstream of the magnetic gap G1 of the recording / reproducing head 153 in the rotation direction of the first flexible disk 2, and is located at both ends in the width direction of the magnetic gap G1. The portions have magnetic gaps G2 and G3.

The first head chip 131 for recording / reproducing data on / from the first flexible disk 2 has the first
When data is recorded on the flexible disk 2, the magnetic gap G1 of the recording / reproducing head unit 153 is used.
Data is recorded on the first flexible disk 2 by using the magnetic gaps G2 and G2 of the erasing head unit 154.
By G3, a guard band is formed between adjacent recording tracks by erasing a certain width on both sides in the width direction of a recording track formed by recording data by the recording / reproducing head unit 153. ing.

As the second head chip 132 incorporated in the first slider section 146 constituting the head slider 133, for example, a MIG (Metal in Gap) head is used, and the above-described recording / reproducing head section is used. It has a magnetic gap capable of forming a recording track narrower than 153. The first slider portion 146 is formed by embedding the second head chip 132 in a head slider 133 formed using ceramics or the like.

As shown in FIGS. 12 and 14, a notch recess for exposing a part of the second head chip 132 to the outside is provided in the first slider portion 146 in which the second head chip 132 is incorporated. 155 are formed. In the notched recess 155, a part of a portion constituting a second core portion, which is a magnetic core of the second head chip 132, faces outward. As shown in FIG. 14, a coil 156 for the second head chip 132 is wound around a part of the second head chip 132 facing outward through the notch recess 155. I have.

Coil 15 for second head chip 132
6 is formed to be small in size corresponding to the small second head chip 132. Then, the second head chip 132
The one end of the wire constituting the coil 156 for recording is connected to the recording / reproducing IC circuit 123 and the magnetic head 10 as described above.
5 is soldered to the second terminal area of the flexible wiring board 124 serving as a relay board.

As shown in FIG. 12, the core forming member 135 attached to the above-mentioned head slider 133 has a substantially U-shaped connecting portion 157 made of a magnetic material, and a substantially rectangular portion on the end of the connecting portion 157. First and second leg portions 145 and 160 made of a non-magnetic material that is vertically arranged;
7 is provided with third, fourth, and fifth legs 161, 162, and 163, which are made of a magnetic material and erected substantially vertically on one side. Here, the third and fifth legs 161 and 165 are located upright at the corners of the connecting portion 157, and the fourth leg 162 is composed of the third leg 161 and the fifth leg 161. 163. A groove 164 is formed on the upper end surface of the fourth leg 162 facing the head slider 133, and the first and second protrusions 16 are formed on both sides of the groove 164.
5,166 are formed.

A first bobbin 139 which is formed in a cylindrical shape and has flange portions 139a and 139b formed on both ends is attached to the core forming member 135. The first coil 141 is provided on the peripheral surface of the bobbin 129. Is wound.
The first bobbin 139 has a through hole 139c at the center thereof corresponding to the third leg 161 so that the third leg 161 can be inserted therethrough.

Further, like the first bobbin 139, the core forming member 135 is formed into a cylindrical shape, and the second bobbin 140 is formed with flange portions 140a and 140b at both ends.
The bobbin 140 is provided with a second coil 1
42 are wound. The second bobbin 140 has a through hole 140c at the center thereof corresponding to the fifth leg 163 so that the fifth leg 163 can be inserted therethrough.

The first bobbin 139 and the second bobbin 140 are connected to the first and second coils 141 and 141, respectively.
With the 142 wound, the through-holes 139c and 140c are inserted into the third and fifth legs 161 and 163, and attached to both sides of the core forming member 135 so as to face each other. Constitute.

One end of a wire constituting the first coil 141 wound around the first bobbin 139 and one end of a wire constituting the second coil 142 wound around the second bobbin 140 Is soldered to the second terminal area 127 of the flexible wiring board 124 serving as a relay board between the recording / reproducing IC circuit 123 and the magnetic head unit 105 as described above.

The first core portion 138 is provided in the manner shown in FIGS.
As shown in FIG.
Of the legs 159 to 163 of the head slider 133
The first and second flexible disks 2 and 22 are brought into contact with the lower surface opposite to the surface facing the first and second flexible disks 2 and 22, and are joined to and integrated with the head slider 133 using an adhesive such as an epoxy resin. At this time, the first and second legs 1
As shown in FIG. 14, 59 and 160 are in contact with the vicinity of both ends of the first slider portion 146 constituting the head slider 133. The third leg 161 has a head slider 133 such that the tip end surface is magnetically coupled to the recording / reproducing head 153 constituting the first head chip 131.
And the fifth leg 163 has a tip end surface on which the erasing head 15 constituting the first head chip 131 is formed.
4 is brought into contact with the lower surface of the head slider 133 so as to be magnetically coupled to the head slider 133. Furthermore, the fourth leg 162 is
The tip of the first projection 165 is magnetically coupled to the recording / reproducing head 153, and is located between the recording / reproducing head 153 and the erasing head 154, and the tip of the second projection 166. The surface is in contact with the lower surface of the head slider 133 so that the surface is magnetically coupled to the erasing head portion 154.

The contact between the first core portion 138 and the head slider 133 in this manner allows the third leg portion 1
61 and the fourth leg 162 are the recording / reproducing head 153.
Of the magnetic core. That is, in the recording / reproducing head 153, a magnetic path is formed between the third leg 161 to which the first coil 141 is attached and the first protrusion 165 of the fourth leg 162. The first core portion 138 and the head slider 133 are brought into contact with each other, so that the fifth leg portion 163 and the fourth leg portion 162 are connected to the erasing head portion 15.
4 constitute the magnetic core. That is, the erasing head unit 1
54 is a second projection 1 provided on the fifth leg 163 to which the second coil 142 is attached and the fourth leg 162.
66, a magnetic path is formed.

The magnetic head device 100 is provided with a gimbal spring 171 for swingably supporting the magnetic head unit 105 configured as described above at the distal ends of the first and second head support arms 102 and 103. ing. The gimbal spring 171 is formed by punching a thin metal plate such as a stainless steel plate or phosphor bronze, and is formed in a flat rectangular shape as shown in FIG. A head mounting portion 172 to which a head slider 133 is mounted is provided.

As shown in FIG. 17, the gimbal spring 171 has a first annular frame portion 173 surrounding the outer periphery of the head mounting portion 172. The head mounting portion 172 is connected to the first annular frame portion 173 via a pair of first connecting portions 174 and 175 protruding from opposite sides in the short side direction. The head mounting portion 172 is rotatable about the first connecting portions 174 and 175 as a rotation axis.

Further, the gimbal spring 171 has the configuration shown in FIG.
As shown in (2), a second annular frame portion 176 is formed so as to surround the outer periphery of the first annular frame portion 173. The first annular frame portion 173 includes a pair of second connecting portions 177 protruding from opposite sides in a long side direction orthogonal to the short side direction in which the pair of first connecting portions 174 and 175 are provided. , 178 are connected to the second annular frame portion 176. The first annular frame portion 173 is rotatable about the second connecting portions 177 and 178 together with the head mounting portion 172 as a rotation axis.

As shown in FIG. 17, when the gimbal spring 171 is mounted on the magnetic head unit 105 and mounted on the magnetic head device 100, the first connecting portion 17
4,175 are connected in the tangential direction R of the recording track formed on the first or second flexible disk 2,22.
Is made parallel to

The head mounting portion 172 formed on the gimbal spring 171 has a tangential direction R of a recording track formed on the first or second flexible disk 2 or 22.
The pair of first and second openings 179 and 18 are parallel to the connection direction of the first connection portions 174 and 175,
0 is formed.

Gimbal spring 17 formed as described above
1 is attached to the magnetic head unit 105 including the head slider 133 and the first core unit 138. Specifically, the gimbal spring 171 is mounted between the head slider 133 and the first core 138. At this time,
The head slider 133 positions the first slider portion 146 in the first opening 169, and the first head chip 13
1 is located in the second opening 170 and the gimbal spring 17
It is mounted on one head mounting portion 172.

Then, the first core portion 138 inserts the first and second legs 149 and 150 of the core forming member 135 into the first opening 179, and connects the tip end surfaces of these legs 149 and 150. Abutting against the lower surface of the first slider portion 146,
The third to fifth core forming members 135 are formed in the second openings 180.
Through the legs 151, 152, 153,
The tip surfaces of the fifth legs 151, 152, and 153 are brought into contact with the lower surface of the first head chip 131 to be integrated with the head slider 133. Also in this case, the core forming member 1
Reference numeral 35 is bonded to and integrated with the head slider 133 using an adhesive such as an epoxy resin.

The magnetic head unit 105 includes a gimbal spring 17.
A head slider 133 is attached to one surface of the first gimbal spring 171, and the core forming member 135 of the first core portion 138 is integrally formed by abutting the head forming member 135 on the head slider 133 from the other surface of the gimbal spring 171. That is, in the magnetic head unit 105, the gimbal spring 171 is provided at a position between the head slider 133 and the first core unit 138 in the middle of the magnetic head unit 105 in the height direction.

The gimbal spring 1 is attached to the distal end surface of the spacer 181 attached to the distal ends of the first and second head support arms 102 and 103.
71, the second annular frame portion 176 is joined, and the first and second
Are supported by the head support arms 102 and 103 of FIG.

The magnetic head 105 is connected to the head support arm 1
Spacer 18 for attaching to the tip side of 02, 103
As shown in FIGS. 18 to 21, a spacer body 182 is formed in a rectangular cylindrical shape, and the spacer body 182 is formed from one side of the base end side of the spacer body 182.
A substantially hemispherical pivot 184 is protruded from the tip of the protruding portion 183 protruding toward the center of the lens.

The spacer body 1 constituting the spacer 181
82 is formed in a cylindrical shape large enough to accommodate the first core portion 138 of the magnetic head portion 105.
The second annular frame portion 176 has a size substantially equal to that of the second annular frame portion 176. As shown in FIG. 19, the pivot 184 formed at the distal end of the protruding portion 183 has a height at which the distal end slightly protrudes from the spring mounting surface 182a to which the gimbal spring 171 on the distal end side of the spacer body 182 is mounted. .

The spacer 181 thus configured is made of a synthetic resin, and the spacer body 182 and the protrusion 1
83 and pivot 184 are integrally formed. The spacer 181 is provided on the magnetic head unit 10 attached to the distal ends of the first and second head support arms 102 and 103.
When the first and second flexible disks 2 and 5 are brought into contact with the main surfaces of the first and second flexible disks 2 and 22 on the disk table 64, the first and second head support arms 102 and 103 are mounted on the cartridge mounting section 75. The first and second disk cartridges 21 and 21 are formed to have a height sufficient to extend on the upper and lower surfaces thereof without contacting the first or second disk cartridges 21 and 21.

On the inner peripheral side of the spacer body 182, FIG.
A magnetic shield ring 185 is provided along the inner peripheral surface of the spacer body 182 as shown in FIG. The magnetic shield ring 185 is formed by forming a magnetic material having a high magnetic permeability in a rectangular tube shape and in a rectangular tube shape.
The spacer is fitted along the inner peripheral surface of the spacer body 182. The magnetic shield ring 185 has a notch 186 formed on the inner peripheral surface of the spacer main body 182 at a position where the protrusion 183 is attached. By forming the cutout portion 186 in this manner, the magnetic shield ring 185 can cover substantially the entire inner peripheral surface of the spacer body 182.

As shown in FIGS. 23 to 26, a gimbal spring 171 supporting the magnetic head 105 is attached to the spacer 181. Gimbal spring 17
1, the head slider 133 attached to one surface side faces upward, the other surface side of the second annular frame portion 176 is joined to the spring attachment surface 182a on the distal end side of the spacer body 182, and the head attachment portion 172 Is mounted on the pivot 184 and attached to the distal end side of the spacer 181. By attaching the gimbal spring 171 to the spacer 181 in this manner, a substantially central portion of the head attachment portion 172 is supported by the pivot 184 having a height slightly projecting from the spring attachment surface 182a.

The head mounting portion 172 has a substantially central portion supported by the pivot 184 at one point.
Is used as a fulcrum, and the pair of first connecting portions 174 and 175 and the pair of second connecting portions 177 and 178 are rotationally displaced in two orthogonal directions perpendicular to each other. As a result, the head slider 133 attached to the head attachment portion 172 of the gimbal spring 171 and the first core portion 138 joined to the head slider 133 can swing and displace.

As shown in FIG. 27, the spacer 181 to which the gimbal spring 171 is attached has the base end face opposite to the tip end face to which the gimbal spring 171 is attached, as shown in FIG. , 103
Attach to the tip. At this time, the spacers 18 are attached to the first and second head support arms 102 and 103.
1, 171 are arranged to face each other.

The magnetic head 10 constructed as described above
The first or second flexible disk 2, 22 on which data is written and / or read out according to 5 is loaded on the disk table 64 and driven to rotate due to unevenness of the flatness of the disk itself. Surface runout may occur.

However, the above-described magnetic head 10
5, the first and second head chips 131, 1
A head slider 133 in which the head slider 32 is incorporated and a first core portion 138 joined to the head slider 133 are attached to the distal ends of the first and second head support arms 102 and 103 via a gimbal spring 171. Since the head slider 133 and the first core portion 138 are swingable with respect to the first and second head support arms 102 and 103, the first or the second 2 flexible disks 2, 22
Even if surface run-out occurs on the head slider 13,
3 and the first core portion 138 so as to follow the runout of the first or second flexible disk 2, 22.
The postures of the first and second head support arms 102 and 103 are displaced.

As a result, the magnetic head unit 105 can accurately record the recording tracks formed on the signal recording unit of the first flexible disk 2 or the second flexible disk 22 loaded on the disk table 64 of the magnetic disk device 50. Access to enable stable writing of data to the first or second flexible disk 2 or 22 or stable reading of data from the first or second flexible disk 2 or 22 Can be.

The first and second bobbins 139,
First and second coils 141 and 14 wound around 140
2 and a second head chip 13
One end of the wire constituting the second coil 156 is connected to the recording / reproducing IC circuit 123 and the magnetic head 1 as described above.
05 is soldered to the second terminal area 127 of the flexible wiring board 124 which will be a relay board.

Here, the head slider 133 to which the coil 156 for the second head chip 132 is attached and the first core portion 138 having the first and second coils 141 and 142 are, as described above, The posture with respect to the first or second head support arms 102, 103 is displaced so as to follow the surface deflection of the first or second flexible disk 2, 22. Therefore, one end of the wire constituting the first and second coils 141 and 142 to be soldered to the second terminal area 127 of the flexible wiring board 124 and the wire constituting the coil 156 for the second head chip 132 When the head slider 133 and the first core portion 138 change their posture, the first and second coils 141 and 142 and the second
If the so-called play for displacing the coil 156 for the head chip 132 is not formed, the wires constituting the first and second coils 141 and 142 and the coil 156 for the second head chip 132 are formed. In some cases, the constituent wires are disconnected.

Thus, the magnetic head device 10 according to the present invention
In FIG. 28, as shown in FIG. 28, one end of the wire constituting the first and second coils 141 and 142 and the second
A bending portion 190 that bends in a direction substantially parallel to the signal recording portion of the flexible disks 2 and 22 loaded on the disk table 64 is provided on one end side of a wire constituting the coil 156 for the head chip 132. It is formed. In other words, the wire constituting the first and second coils 141 and 142 and the wire constituting the coil 156 for the second head chip 132 have their curved portions 190 formed at one end thereof. One end is the second terminal region 1 of the flexible wiring board 124
27 is soldered.

In the magnetic head device 100 according to the present invention, the first and second coils 141 and 142
One end side of the wire constituting the second head chip 13
By forming the curved portions 190 on one end side of the wire constituting the second coil 156, when the posture of the head slider 133 and the first core portion 138 is displaced, the first curved portions 190 are formed. And the second coil 1
Wires Constituting 41 and 142 and Second Head Chip 1
The wire constituting the coil 156 for 32 is displaced to suppress the occurrence of disconnection.

In particular, in the magnetic head device 100, since the curved portion 190 is formed in a direction substantially parallel to the signal recording portions of the flexible disks 2 and 22 loaded on the disk table 64, the first portion is formed. One end of the wire constituting the second coils 141 and 142 and one end of the wire constituting the coil 156 for the second head chip 132 are repeatedly rubbed against the edge of the flexible wiring board 124. Therefore, it is possible to effectively prevent the wires constituting the first and second coils 141 and 142 and the wires constituting the coil 156 for the second head chip 132 from being disconnected.

In order to confirm the effects of the present invention, tap tests were actually performed on the magnetic head device 100 according to the present invention and the conventional magnetic head device, respectively. 1 and 2nd coil 1
Wires Constituting 41 and 142 and Second Head Chip 1
It has been proved that disconnection of the wire constituting the coil 156 for 32 is effectively prevented.

The tap test was performed as follows. That is, the distal ends of the first and second head support arms 102, 103 supporting the magnetic head units 105, 105 are displaced to a predetermined position in a direction in which the magnetic head units 105, 105 respectively supported are separated from each other. Thereafter, the magnetic heads 105, 105 respectively supported are displaced to positions where they approach or contact each other. By repeating the above operation, the first and second coils 141 and 142
And the number of operations until the wire constituting the coil 156 for the second head chip 132 breaks. The test was conducted for several tens of the magnetic head devices 100 according to the present invention and the conventional magnetic head devices.

As a result, in the conventional magnetic head device, when the above-described operation is performed 200,000 to 400,000 times, the wire constituting the coil of most of the magnetic head device is disconnected, and the above operation is performed by 450,000. Repeatedly, the wires constituting the coils of all the magnetic head devices were disconnected. On the other hand, in the magnetic head device 100 according to the present invention, the first and second coils 14
1 and 142 and the second head chip 13
None of the wires constituting the second coil 156 was broken.

From the above results, in the magnetic head device 100 according to the present invention, the wire constituting the first and second coils 141 and 142 and the wire constituting the coil 156 for the second head chip 132 are disconnected. It was found that it was effectively prevented.

The one end of the wire constituting the first and second coils 141 and 142 and the one end of the wire constituting the coil 156 for the second head chip 132 are connected to the second terminal area 127 of the flexible wiring board 124. When soldering, a jig for coil connection is used. This jig for coil connection is configured such that the number of pins corresponding to the number of coils is erected on the base, and each pin is connected to the second terminal area 127 of the flexible wiring board 124 shown in FIG. Corresponding to the respective bumps, they are erected on the base at a predetermined interval from each other. The jig for coil connection is removed when the connection of the coil is completed.

The wires constituting the first and second coils 141 and 142 and the coil 15 for the second head chip 132
The wire constituting the wire 6 is extended in a direction substantially parallel to a signal recording portion of the flexible disk 2 or 22 loaded on the disk table 64 at one end thereof. One end of each is soldered to each bump of the second terminal area 127 of the flexible wiring board 124 so as to be hooked on the pin and folded back. Thereby, one end side of the wire constituting the first and second coils 141 and 142 and the wire constituting the coil 156 for the second head chip 132 are
Jig pins for coil connection and flexible wiring board 12
4 is bent in a direction substantially parallel to the signal recording portions of the flexible disks 2 and 22 loaded on the disk table 64 with a length corresponding to the distance between the second terminal region 127 and the bump. A part 190 is formed.

The length of one end of these wires constituting the curved portion 190 is determined in accordance with the distance between the pins of the jig for coil connection and the bumps of the second terminal area 127 of the flexible wiring board 124. Is done. Therefore, one end of the wire constituting the first and second coils 141 and 142 and one end of the wire constituting the coil 156 for the second head chip 132 are connected to the second terminal region 127 of the flexible wiring board 124. At the time of soldering, by changing the position of the jig for coil connection with respect to the second terminal region 127 of the flexible wiring board 124, it is possible to adjust the length of these wires constituting the curved portion 190.

In the magnetic head device 50 according to the present invention, the length of one end of these wires constituting the curved portion 190 is the maximum swing amount of the head mounting portion 172 of the gimbal spring 171, that is, the head slider 133 and the first slider. Is desirably adjusted to be larger than the maximum displacement of the core portion 138. As described above, by setting the length of one end side of the wire constituting the curved portion 190 to be larger than the maximum displacement of the head slider 133 and the first core portion 138, the head slider 133 and the first core portion When the 138 is displaced, the wires constituting the first and second coils 141 and 142 and the coil 1 for the second head chip 132
It is possible to reliably prevent disconnection of these wires caused by the wires constituting the 56 being pulled.

Operation of Magnetic Head Device Next, the operation of the magnetic head device 100 having the above-described magnetic head unit 105 will be described. As described above, the magnetic head device 100 includes the first flexible disk 2 on which data is recorded at the first recording density, and the data recording at the second recording density higher than the first recording density. The recording and / or reproduction of data can be performed on both of the second flexible disks 22 to be performed.
The recording and / or reproduction of data is performed on the flexible disk 2 or the second flexible disk 22.

When the first flexible disk 2 is loaded on the disk table 64 of the disk rotation drive mechanism 61, the first and second head support arms 102,
Magnetic heads 105 and 10 attached to the distal end of
The first flexible disk 2 is driven to rotate while 5 is in contact with the signal recording section of the first flexible disk 2. At this time, the first disk 2 is about 300 rpm
The data is rotated at a rotation speed of m, and data is recorded and reproduced by the first head chip 131 of the magnetic head unit 105.

The first head chip 131 uses the magnetic field generated by the first coil 141 wound around the first bobbin 139 to move the third leg 151, the fourth leg 152, and the recording / reproducing head. A magnetic path is formed between the parts 153. The recording / reproducing head unit 153 performs data recording / reproducing on the first flexible disk 2 that is driven to rotate integrally with the disk table 64. In addition,
When data is recorded on the first flexible disk 2 using the first head chip 131, the data is generated from the second coil 142 wound on the second bobbin 140 attached to the fifth leg 153. The fifth leg 153, the fourth leg 152, and the erasing head 15
4, the recording and reproducing head 1
Only the vicinity of both sides in the track width direction of the recording track formed by 53 is erased, and a guard band is formed between the recording tracks formed by performing data recording.

On the other hand, when the second flexible disk 22 on which data is recorded at the second recording density is loaded on the disk table 64, the disk rotation driving mechanism 6
1, the second flexible disk 22 is about 3600
It is rotationally driven at a rotational speed of rpm. Thus, the second
When the flexible disk 22 is rotated at a high speed, the rail portions 149 and 15 formed on the head slider 133 are rotated.
A convection of air is generated between the zero and the second flexible disk 22, and a so-called air film is formed. Then, the first and second head support arms 102 and 103
The magnetic head parts 105, 105 attached to the tip side of
By the action of the air film, the second flexible disk 22 is floated from the main surface by a certain amount, for example, about 50 nm.

The magnetic head units 105, 105 record data on the second flexible disk 22 by the second head chip 132 with the magnetic head units 105, 105 floating above the main surface of the second flexible disk 22 by a fixed amount. Perform playback.

Operation of Magnetic Disk Device Next, an operation of recording and reproducing data on the first flexible disk 2 or the second flexible disk 22 by the magnetic disk device 50 including the magnetic head device 100 will be described.

As shown in FIG. 29, the magnetic disk device 50 provided with the magnetic head device 100 has a DSP (digital signal processor) as a controller for controlling the entire device.
cessor) 201. By the DSP 201,
The rotation control of the first or second flexible disk 2 or 22 loaded on the disk table 64 and driven to rotate, the movement control of the magnetic head device 100, and the second flexible disk 22 for data recording at high recording density. Control of a recording / reproducing system is performed. The DSP 201 is connected to the bus 202. The DSP 201 is connected to the bus 202
And reads a program stored in the flash memory 203 connected thereto, and executes a control operation according to the program.

In the magnetic disk device 50, the flexible disk loaded on the disk table 64 is the first flexible disk 2 on which data is recorded at the first recording density, or the recording density is higher than the first recording density. A disk type detecting unit 204 for detecting whether or not the second flexible disk 22 records data at a high second recording density by using the disk identification holes 12 and 33 provided in the cartridge bodies 7 and 27. Have. The output signal of the disk type detection unit 204 is supplied to the DSP 201 as a mode signal SMD. DSP201
Controls switching of the rotation speed of the first or second flexible disk 2 or 22 loaded on the disk table 64 of the disk rotation drive mechanism 61 in accordance with the mode signal SMD.

The magnetic disk drive 50 has a motor drive circuit 206 for driving the spindle motor 62 of the disk rotation drive mechanism 61 for rotating the first or second flexible disk 2 or 22. A frequency signal SFG of a frequency corresponding to the rotation speed obtained from the spindle motor 62 is supplied to the DSP 201 via the motor drive circuit 206. The DSP 201 refers to the frequency signal SFG and refers to the first or second flexible disk 2 loaded on the disk table 64.
Motor driving circuit 2 so that the rotation speed of the motor 22 becomes a predetermined value.
06 is controlled.

The magnetic disk drive 50 includes first and second head support arms 10 that support the magnetic head units 105 and 155 of the magnetic head device 100, respectively.
A VCM (voice coil motor) 208 for moving the head carriage body 106 to which the first and second flexible disks 2 and 103 are connected in the radial direction of the first or second flexible disk 2 or 22 loaded on the disk table 64;
And a VCM driver 209 for driving the CM 208. The DSP 201 controls the magnetic head device 50 based on the tracking information of the magnetic head device 50 output from the R / W channel IC 313 to be described later so that the magnetic head device 50 is correctly positioned on the target track of the first or second flexible disk 2 or 22. The VCM driver 209 is controlled.

The magnetic disk device 50 has a recording / reproducing system for high recording density using the second flexible disk 22 and a recording / reproducing system for standard recording density using the first magnetic disk 2. . A recording / reproducing system for high recording density (upper mode) includes a disk controller 211 for exchanging data, status, and commands with the host computer, and a DRAM as a data buffer.
(Dynamic random access memory) 212 and R / W channel IC 21 for performing recording signal processing and reproduction signal processing
3 and the recording signal output from the R / W channel IC 213 is amplified and supplied to the second head chip 132 for high recording density (upper mode) provided on the head slider 133 of the magnetic head units 105 and 105. An amplifier unit 214 including a recording amplifier and a reproduction amplifier for amplifying a reproduction signal reproduced by the second head chip 132 and supplying the amplified signal to the R / W channel IC 213.

The disk controller 211 is connected to the bus 202
It is connected to the. Disk controller 211 and R
The operation of the / W channel IC 213 is
1 is controlled. Disk controller 211
Is a host computer (not shown) and EIDE (Extend
ed Intelligent Drive Electronics) interface.

The magnetic disk drive 50 according to the present invention
Has an FDD controller 215 as a standard recording density recording / reproducing system for recording / reproducing data on / from the first flexible disk 2 having the first recording density. The FDD controller 215 is connected to a host computer (not shown) via an FDD (Floppy Disk Drive) interface. This FDD controller 215
Generates a recording signal from MFM (Modified Frequency Modulation) data sent from the host computer at the time of data recording, and generates a magnetic head unit 105.
Recording / reproducing head section 15 of the first head chip 131
3 and a recording / reproducing head 15 during reproduction.
3 has a function of obtaining MFM data from the reproduced signal from the device 3 and supplying it to the host computer.

When the first disk cartridge 1 containing the first flexible disk 2 of the standard recording density is mounted on the magnetic disk device 50 configured as described above, the disk type is detected by the disk type detection unit 204 and supplied to the DSP 201. The mode signal SMD indicates the lower mode. Thus, based on the frequency signal SFG from the spindle motor 62 of the disk rotation drive mechanism 61, the DSP
The motor drive circuit 206 is controlled by the
Flexible disk 2 at a standard speed of, for example, 300 r
pm. Also, under the control of the DSP 201, the recording / reproducing system for the standard recording density as the first recording density is used. Next, when data is recorded on the first flexible disk 2, the host computer supplies the FDD controller 215 via the FDD interface with the magnetic head units 105 and 105 in contact with both main surfaces of the first flexible disk 2. Is supplied with MFM data as write data. Then, a recording signal corresponding to the MFM data is output from the FDD controller 215, and the recording signal is supplied to the recording / reproducing head unit 153 of the first head chip 131, and the recording signal of the target track of the first flexible disk 2 is recorded. It is recorded in a predetermined sector.

On the other hand, when reproducing the data recorded on the first flexible disk 2, the data is reproduced by the recording / reproducing head section 153 of the first head chip 131 from a predetermined sector of the target track of the first flexible disk 2. The supplied signal is supplied to the FDD controller 215, and the FDD controller 215 outputs the MF corresponding to the reproduced signal.
The M data is output and supplied to the host computer.

Next, a second disk cartridge 21 containing a second flexible disk 22 on which data is recorded at a second recording density higher than the first recording density is mounted on the disk device 50. And the mode signal SMD supplied from the disk type detection unit 204 to the DSP 201 indicates the upper mode. Thereby, based on the frequency signal SFG from the spindle motor 62,
The motor drive circuit 206 is controlled by the DSP 201, and the second flexible disk 22 loaded on the disk table 64 is moved at a high speed, for example, 3600.
It is rotationally driven at rpm. Further, the recording / reproducing system for high recording density (upper mode) is used under the control of the DSP 201.

Next, when data is recorded on the second flexible disk 22, the magnetic head units 105, 105
Is in a state where data can be recorded in a state in which both are close to both main surfaces of the second flexible disk 22, write data is supplied from the host computer to the disk controller 211 using the EIDE interface. The write data is temporarily stored in the DRAM 212. The data for writing is subjected to an error correction code adding process and an interleaving process by the disk controller 211 to generate the write data WD. Generated write data WD
Is the R / W channel I from the disk controller 211.
C213. And this R / W channel I
The recording signal S corresponding to the write data WD from C213
R is output, and the recording signal SR is supplied to the second head chip 132 provided on the head slider 133 of the magnetic head units 105 via the recording amplifier of the amplifier unit 214.
And is recorded in a predetermined sector of the target track of the second flexible disk 22.

On the other hand, when reproducing the data recorded on the second flexible disk 22, the second flexible disk 22 has a second track from a predetermined sector on the target track.
The signal reproduced by the head chip 132 of the amplifier unit 21
R / W channel IC 213
Supplied to Then, this R / W channel IC 213
Performs a waveform equalization process, a data identification process, a 16/17 code decoding process, and the like to obtain read data RD.
This read data RD is transmitted to the disk controller 211.
And then subjected to deinterleave processing and error correction processing to obtain final read data. This read data is temporarily stored in the DRAM 212 and then supplied to the host computer.

As described above, when the first flexible disk 2 having the first recording density, which is the standard recording density, is mounted on the magnetic disk device 50, the first head of the magnetic head units 105, 105 is mounted. Data recording / reproduction is performed with the recording / reproduction head 153 of the chip 131 in contact with a signal recording section formed on the main surface of the first flexible disk 2. On the other hand, when the second flexible disk 22 of the second recording density, which is a high recording density, is mounted on the magnetic disk device 50, the magnetic head units 105, 1
Data recording / reproducing is performed in a state where the head slider 133 constituting the part 05 floats from both main surfaces of the second flexible disk 22 where the signal recording part is formed.

As described above, the magnetic disk device 50 according to the present invention has a high recording density of the second flexible disk 2.
2 other than the first flexible disk 2 of the standard recording density
It is possible to record and reproduce data for
It has backward compatibility.

[0171]

As described above, in the magnetic head device according to the present invention, since the magnetic head is swingably supported by the support arm by the magnetic head support member, signal recording on the disk-shaped recording medium is performed. When writing and / or reading data to / from the area, even if the disk-shaped recording medium fluctuates, even if the magnetic head is in stable sliding contact with the disk-shaped recording medium or in a stable state. Can be maintained.

Further, in this magnetic head device,
At one end of the wire constituting the coil of the magnetic head element, a curved portion is formed which bends in a direction substantially parallel to the signal recording surface of the disk-shaped recording medium. Since the displacement is possible, even if the magnetic head displaces its posture following the surface deflection of the disk-shaped recording medium, disconnection of the wire is effectively prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first disk cartridge accommodating a first magnetic disk of a first recording density.

FIG. 2 is a bottom view showing the lower surface side of the first disk cartridge.

FIG. 3 is a perspective view showing a second disk cartridge accommodating a second magnetic disk having a second recording density.

FIG. 4 is a bottom view showing the lower surface of the second disk cartridge.

FIG. 5 is a perspective view showing the appearance of a magnetic disk drive using the magnetic head device according to the present invention.

FIG. 6 is an exploded perspective view showing the magnetic disk device.

FIG. 7 is a perspective view showing a magnetic head device according to the present invention.

FIG. 8 is a plan view of the magnetic head device.

FIG. 9 is a bottom view of the magnetic head device.

FIG. 10 is a side view of the magnetic head device showing a state in which first and second head support arms to which a magnetic head is attached enter a disk cartridge to record and reproduce data.

FIG. 11 is a side view of the magnetic head device showing a state in which a second head support arm to which a magnetic head is attached is rotated in a direction away from the first head support arm to eject a disk cartridge.

FIG. 12 is an exploded perspective view showing a magnetic head unit included in the magnetic head device according to the present invention.

FIG. 13 is a plan view of the magnetic head unit.

FIG. 14 is a side view of the magnetic head unit.

FIG. 15 is a bottom view of the magnetic head unit.

FIG. 16 is a side view of the magnetic head unit.

FIG. 17 is a plan view showing a gimbal spring that swingably supports a magnetic head on a head support arm.

FIG. 18 is a plan view showing a spacer to which a gimbal spring incorporated in a magnetic head is attached.

FIG. 19 is a sectional view of the spacer.

FIG. 20 is a bottom view of the spacer.

FIG. 21 is a sectional view of the spacer.

FIG. 22 is a perspective view showing a state where a magnetic shield ring is attached to the spacer.

FIG. 23 is a plan view showing a magnetic head portion supported by a gimbal spring.

FIG. 24 is a sectional view showing a magnetic head portion supported by a gimbal spring.

FIG. 25 is a bottom view showing a magnetic head portion supported by a gimbal spring.

FIG. 26 is a sectional view showing a magnetic head portion supported by a gimbal spring.

FIG. 27 is a partially cutaway perspective view showing a magnetic head unit attached to the distal end side of a head support arm.

FIG. 28 is an enlarged plan view showing a distal end side of a head support arm to which a magnetic head unit is attached.

FIG. 29 is a block circuit diagram showing a recording / reproducing system of the magnetic disk device.

FIG. 30 is a sectional view schematically showing a conventional magnetic disk drive.

FIG. 31 is an enlarged plan view showing a tip end side of a head support arm of a conventional magnetic head device.

FIG. 32 is a side view showing the vicinity of a magnetic head portion of a conventional magnetic head device.

[Explanation of symbols]

1 first disk cartridge, 2 first flexible disk, 21 second disk cartridge, 22
Second flexible disk, 50 magnetic disk drive, 100 magnetic head drive, 102, 103 head support arm, 105 magnetic head section, 131 first head chip, 132 second head chip, 133 head slider, 138 first Core part, 141 first coil, 142 second coil, 156 second head chip coil, 171 gimbal spring, 181 spacer, 190 bending part

Claims (5)

[Claims] 1. A magnetic head having a magnetic head element for writing and / or reading data to / from a disk-shaped recording medium, a support arm for supporting the magnetic head at a tip end, the magnetic head and the support arm And a magnetic head supporting member that supports the magnetic head so as to swing with respect to the support arm, and one end of a wire that forms a coil of the magnetic head element is connected to the magnetic head supporting member. A wiring substrate having a terminal portion, and a curved portion that bends in a direction substantially parallel to a signal recording surface of the disk-shaped recording medium is formed at one end of a wire constituting a coil of the magnetic head element. A magnetic head device characterized in that the bent portion enables the wire to be displaced with the swing of the magnetic head. 2. The magnetic head device according to claim 1, wherein a length of the wire constituting the bay local portion is larger than a maximum swing amount of the magnetic head. 3. A spacer having a projecting portion projecting from a widthwise end of the support arm is provided between the support arm and the magnetic head support member. 2. The magnetic head device according to claim 1, wherein the magnetic head device is provided on a protruding portion of the spacer. 4. A plurality of magnetic heads for writing and / or reading information from / to a disk-shaped recording medium at different recording densities corresponding to a plurality of disk-shaped recording media having different recording densities. The magnetic head device according to claim 1, further comprising an element. 5. A magnetic head comprising: a first magnetic head element for writing and / or reading information from / to a first disk-shaped recording medium on which information is recorded at a first recording density; Second recording density higher than recording density of 1
2. A magnetic head device according to claim 1, further comprising: a second magnetic head element for writing and / or reading information from / to a second disk-shaped recording medium on which information is recorded at a recording density. .