JPH05135525A - Magnetic disk device - Google Patents

Abstract

PURPOSE:To narrow a distance between the surfaces of disks by fitting an integrated type monoblock magnetic head via a head supporting means to a tip part of a positioner. CONSTITUTION:The integrated type monoblock magnetic head 13 is composed of a base part 13a in a thin plate shape having elasticity, a head part 13b formed with a gap on one side surface of the tip part of the base part 13a and a fitting part 13c formed on the other side surface of an end part of the base part 13a. Then, the fitting part 13c is fitted to a slant surface 14a of the head supporting means 14 provided on the tip part of the positioner 12, so as to be provided to be inclined at a prescribed angle to a recording surface of the disk 11. Thus, by eliminating the conventional suspension and spacer and fitting the head fitting part 13c to the slant surface 14a of the head supporting means 14 in a thin plate shape, the distance between the surfaces of the disks can be diminished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plurality of rotatably arranged disks which are stacked at a predetermined interval.
A disk drive unit for rotating and driving these disks, a positioner having a tip portion extending on each recording surface of the disk and movably provided so as to cross a track of the disk, and a positioner having a tip portion for the disk portion. Positioner drive unit that drives to cross the track of
The present invention relates to a magnetic disk device including a recording / reproducing unit which is provided on the tip end side of the positioner and which reads / writes data from / to the recording surface of the disk.

In recent years, there has been an increasing demand for a magnetic disk device that is compact, thin, large-capacity, low-priced, and has low power consumption. To this end, the areal density is improved by improving the characteristics of the head and the medium. It is desired to suppress the increase of the number of media as much as possible and mount a large number of media in a small space, or to mount the same number of media as the conventional one while suppressing the height of the device as much as possible.

[0003]

2. Description of the Related Art Next, a conventional example will be described with reference to the drawings. FIG. 21 is a plan view of a head support mechanism of a conventional magnetic disk device, FIG. 22 is a front view of FIG. 21, and FIG. 23 is a main part configuration diagram of the magnetic disk device.

In these figures, a suspension formed by bending an ultra-thin plate of stainless steel as a supporting member via a spacer 2 at the tip of an arm 1 driven by a positioner so as to cross a track of a disk. The proximal end of 3 is attached using screws 4. The spacer 2 is used as a reinforcing material for the suspension 3. Further, bent portions 3a are formed on both sides of the suspension 3 in order to ensure rigidity.

At the tip of the suspension 3, a magnetic head 6 for reading / writing data from / on a disk 7 arranged at a predetermined interval is attached via a gimbal 5 as a supporting member.

[0006]

However, in the head supporting mechanism having the above-described structure, in order to increase the number of mounted disks 7, the thickness of the arm 1 is reduced so that the disk 7 can be mounted.
It is conceivable to reduce the distance between the faces. However, if it is made too thin, there is a problem that the bent portions 3b of the adjacent suspensions 3 interfere with each other and the inter-plane distance of the disks 7 cannot be reduced.

Since the thicknesses of the magnetic head 6 and the spacer 2 are also required, the inter-plane distance L of the disk 7 (see FIG. 23) should be reduced.
There is a problem that it is difficult to set the thickness to 3 mm or less, and the number of mounted disks 7 cannot exceed a certain number with a predetermined height of the device.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a magnetic disk device capable of reducing the surface distance between disks.

[0009]

FIG. 1 is a principle view of the invention described in claim 1. In this figure, reference numeral 11 denotes a plurality of disks which are stacked and arranged at a predetermined interval and are rotationally driven by a disk drive unit (not shown). A positioner 12 is driven by a positioner drive unit (not shown) so that its tip portion extends on each recording surface of the disk 11 and crosses the tracks of the disk 11.

Reference numeral 13 denotes an integrated type integrated magnetic head as a recording / reproducing section. The integrated type integrated magnetic head 13 has a thin plate-shaped base portion 13a having elasticity and one end surface of the base portion 13a. Head part 13 with a gap formed
b, and a mounting portion 13c formed on the other surface of the base end portion of the base portion 13a.

Reference numeral 14 denotes a thin plate-shaped head supporting means, and the head supporting means 14 has a positioner 12 on the base end side.
An inclined surface 14a is provided at the tip of the disk, and the tip side is inclined toward the recording surface of the disk 11.

Next, in the invention described in claim 2, in the invention described in claim 1, when the tip end portion of the positioner 12 is between the disks 11 arranged in a stack, the supporting means has a base end portion of the positioner. A first support member provided at the tip end and having an inclined surface inclined in the recording surface direction of one disc, and a base end portion laminated on the base end portion of the first support member, and the inclined surface of the other disc Of the second supporting member inclined in the recording surface direction.

Next, in a third aspect of the invention, in the invention of the first aspect, when the tip end of the positioner 11 is between the disks arranged in a stack, the supporting means is provided at the tip end of the positioner. And a second inclined surface portion inclined in the recording surface direction of the other disc, and a first inclined surface portion inclined in the recording surface direction of the one disc, and a second inclined surface portion inclined in the recording surface direction of the other disc. ..

[0014] Finally, in the invention according to claim 4, a plurality of discs rotatably arranged and laminated at a predetermined interval, a disc drive portion for rotationally driving these discs, and a tip portion of the discs. Extend on each recording surface,
A positioner movably provided so as to traverse the track of the disc, a positioner drive unit that drives the positioner so that the tip of the positioner traverses the track of the disc, and a positioner provided on the tip side of the positioner,
A magnetic disk device comprising first and second recording / reproducing units for reading / writing data from / into the inner track and the outer track of the disk, respectively. First and second integrated molds including a thin plate-shaped base portion having elasticity, a head portion formed at a tip end portion of the base portion, and a mounting portion formed at a base end portion of the base portion as a reproducing portion. Using the integrated magnetic head, the mounting portion of the integrated magnetic head is
The base end side is attached to the tip end of the positioner, and the tip end side is attached to the inclined surface of a thin plate-shaped head support means having an inclined surface inclined toward the recording surface of the disk.

[0015]

In the magnetic disk device having the above construction, unlike the prior art, there is no suspension and spacer as a head supporting member, and the inclined surface 14a of the thin plate-shaped head supporting means 14 is provided.
By mounting the mounting portion 13c of the integrated magnetic head 13 on the disk, it is possible to reduce the surface distance of the disk 11.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the drawings. 2 is a configuration diagram for explaining a main part of the magnetic disk device according to the first embodiment of the present invention, FIG. 3 is a front view of FIG. 2, and FIG. 4 is an enlarged side view of the integrated type integrated magnetic head of FIG. 5 is an enlarged cross-sectional configuration diagram of the head portion in FIG. 4, FIG. 6 is an enlarged perspective view of portion A in FIG. 2, FIG. 7 is a plan configuration diagram illustrating the entire magnetic disk device, and FIG. 8 is a front view in FIG. 9 is a diagram illustrating a first example of the lead wire of the integrated integrated magnetic head in FIG. 2, and FIG. 10 is a diagram illustrating a second example of the lead wire of the integrated integrated magnetic head in FIG. 11 is a configuration diagram for explaining a main part of a magnetic disk device according to a second embodiment of the present invention, FIG. 12 is a front view of FIG. 11, FIG. 13 is an enlarged perspective view of part B in FIG. 12, and FIG.
4 is a plan view of a magnetic disk device according to a third embodiment of the present invention, FIG. 15 is a front view of FIG. 14, FIG. 16 is a plan view of the fourth embodiment of the present invention, and FIG. 16
18 is a front view in FIG. 18, FIG. 18 is a configuration diagram illustrating the magnetic disk device in FIG. 16, FIG. 19 is a front view in FIG. 18, and FIG. 20 is an enlarged perspective view of a C portion in FIG.

First, a first embodiment of the present invention will be described with reference to FIGS. First, the overall configuration of the magnetic disk device according to the present embodiment will be described with reference to FIGS. 7 and 8. In these figures, reference numeral 21 is a base of the magnetic disk device. A plurality of discs 23 (three in this embodiment) are rotatably stacked on the base 21 via a spacer 22. These multiple discs 2
A spindle motor 3 (not shown) is driven to rotate at high speed (3600 rpm, for example).

Reference numeral 24 is a positioner rotatably provided on the base 21 so that one end thereof crosses the track of the disk 23. A coil 25 is provided at the other rotating end of the positioner 24. The coil 25 is arranged in the magnetic gap of the magnetic circuit 26 provided on the base 21. And this coil 25
Propulsive force is generated in the coil 25 by applying a current to the VCM (voice coil motor) that rotationally drives the positioner 24.

A plurality of arms 27 (four in this embodiment) are attached to the positioner 24 and extend on each recording surface of the disk 23. Specifically, the arm 27 is laminated on the rotary shaft of the positioner via the spacer 29.

A recording / reproducing section for reading / writing data from / to the disk 23 is provided at the tip of the arm 27.

Next, the recording / reproducing section of this embodiment will be described with reference to FIGS.

The recording / reproducing section of this embodiment is a thin plate integrated type integrated magnetic head as shown in FIG. 4 (the integrated type integrated magnetic head of this example is Data Strage 90 An International
Forum; September 10-12,1990 Fairmont Hotel San
28 announced by Censtor Corporation in Jose, California) and a head support member 29 for attaching the integrated type integrated magnetic head 28 to the tip of the arm 27.

The integrated type integrated magnetic head 28 is provided with a thin plate-shaped base portion 28a having elasticity, a head portion 28b having a gap formed on one surface, and a base portion of the base portion 28a. It is composed of a mounting portion 28c formed on the other surface of the end portion, and has a mass of about 1 mg.

The head support member 29 has the arm 2 on the base end side.
7, an inclined surface 29a is formed, the tip side of which is inclined toward the recording surface of the disk 23 and to which the mounting portion 28c of the integrated integrated magnetic head 28 is attached. The material, dimensions, etc. are set so that it has sufficient rigidity to hold it stably.

In this embodiment, the arm 27
Is between the stacked discs 23 (second and third arms from the bottom in FIG. 8), the tip end of the arm 27 has an inclined surface 29a on one disc 23 as shown in FIG. Of the first head support member 29 inclined in the recording surface direction of No. 2 and the second head support member 29 having the inclined surface 29a inclined in the recording surface direction of the other disk 23 are attached by laminating. There is.

Next, the head portion 28a of the integrated magnetic head 28 will be described with reference to FIG. Head part 28a
Comprises a yoke 28d, a coil 28e wound around the yoke 28d, and a gap 28f formed between both ends of the yoke 28d.

Next, the method of laying the lead wires of the integrated magnetic head 28 of this embodiment will be described with reference to FIG. The FPC 41 is attached to one side portion on one surface of the arm 27 from the base end portion to the tip end portion. The lead wire 42 of the integrated magnetic head 28 is connected to the tip of the FPC 41.

The FPC 43 may be provided at the center of one surface of the arm 27 as shown in FIG.

Next, the operation of the above configuration will be described. The disk 23 is rotationally driven by a spindle motor (not shown) as a drive unit. When a current is passed through the coil 25, a propulsive force is generated in the coil 25 arranged in the magnetic gap of the magnetic circuit 26, and the positioner 24 is rotationally driven with respect to the base 21. Positioner 24
When the disk rotates, the head portion 28b of the integrated magnetic head 28 attached to the tip of the arm 27 accesses a desired track of the disk 23 to read / write data from / to the disk 23.

According to the above construction, unlike the conventional case, there is no suspension or spacer as a head supporting member, and the mounting portion 28c of the integrated magnetic head 28 is mounted on the inclined surface 29a of the thin plate-shaped head supporting member 29. This makes it possible to reduce the surface distance of the disk 23. The face-to-face distance of the disk 23 depends on the thickness of the arm 28, but a face-to-face distance of 1.5 mm to 2.5 mm can be realized. Theoretically, the inter-plane distance of the disk 23 can be set to a value slightly larger than the thickness of the arm 28.

In the conventional head support structure, the head,
Suspension, gimbal, spacer total mass is 300m
The mass of the integrated magnetic head 28 of this embodiment, which replaces it, is 1 mg. Further, the weight of the integrated type integrated magnetic head 28 can be reduced, so that the rigidity of the arm 27 can be reduced.
The mass of 7 can also be reduced. Therefore, the moment of inertia of the positioner 24 is significantly reduced, and high-speed access is possible as compared with the conventional case.

Next, a second embodiment of the present invention will be described with reference to FIGS. 11 to 13. In the present embodiment, the first
The same parts as those in the embodiment are designated by the same reference numerals, and the description thereof will be omitted. The difference between this embodiment and the first embodiment is that
The shape of the head support member 45. That is, in the first embodiment, the disc 2 in which the arms 27 are stacked is arranged.
When the distance is between 3, the first head support member and the second head support member are provided at the tip of the arm 27. However, in the present embodiment, one end is provided at the tip of the head support member 45. A first inclined surface portion 45a inclined to the recording surface direction of the disk 23 and a second inclined surface portion 45a inclined to the recording surface direction of the other disk 23 are formed in parallel and integrated on the opposed inclined surface portions 45a and 45b. The attachment portion 28c of the mold-integrated magnetic head 28 is attached.

Also in the above structure, the same effect as that of the first embodiment can be obtained, and the head supporting member does not need to be laminated as compared with the first embodiment, so that the disc surface distance can be further increased. It is possible to narrow it.

Next, a third embodiment of the present invention will be described with reference to FIGS. 14 and 15. In the present embodiment, the first
The same parts as those in the embodiment are designated by the same reference numerals, and the description thereof will be omitted. The difference between this embodiment and the first embodiment is that
The positioner 51. The arm 27 of the positioner 24 of the first embodiment is alternately laminated with the spacer 29 and is made of a different member. The arm portion 51a is formed.

With the above structure, the same effect as that of the first embodiment can be obtained.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. In these figures, the same parts as those in the first embodiment are designated by the same reference numerals, and their description will be omitted. The difference between this embodiment and the first embodiment is that
The positioner 61. Positioner 61 of this embodiment
In order to increase the access speed, the tip of the arm 62 of the positioner 61 is formed into a bifurcated shape, and data reading / writing is performed on the inner track and the outer track of the disc, respectively. The first and second integrated magnetic heads 63 and 64 are attached via the head supporting member 45 of the second embodiment.
The structure of the integrated type integrated magnetic heads 63 and 64 is as follows:
The magnetic head has the same structure as the integrated magnetic head of the embodiment.

Also in the magnetic disk device having the structure of this embodiment, the same effect as that of the first embodiment can be obtained.

[0038]

As described above, according to the present invention, by mounting the integrated type integrated magnetic head on the tip of the arm through the magnetic head supporting means, it is possible to reduce the surface distance of the disk. Can be realized.

[Brief description of drawings]

FIG. 1 is a principle diagram of the invention according to claim 1;

FIG. 2 is a configuration diagram illustrating a main part of the magnetic disk device according to the first embodiment of the present invention.

FIG. 3 is a front view of FIG.

FIG. 4 is an enlarged side view of the integrated magnetic head shown in FIG.

5 is an enlarged cross-sectional configuration diagram of a head portion in FIG.

FIG. 6 is an enlarged perspective view of a portion A in FIG.

FIG. 7 is a plan configuration diagram illustrating an entire magnetic disk device.

FIG. 8 is a front view of FIG. 7.

9 is a diagram illustrating a first example of a lead wire of the integrated magnetic head of FIG.

FIG. 10 is a diagram illustrating a second example of the lead wire of the integrated type integrated magnetic head in FIG.

FIG. 11 is a configuration diagram illustrating a main part of a magnetic disk device according to a second embodiment of the present invention.

FIG. 12 is a front view of FIG. 11.

13 is an enlarged perspective view of a B part in FIG.

FIG. 14 is a plan configuration diagram of a magnetic disk device according to a third embodiment of the present invention.

FIG. 15 is a front view of FIG.

FIG. 16 is a plan configuration diagram illustrating a fourth embodiment of the present invention.

FIG. 17 is a front view of FIG.

FIG. 18 is a configuration diagram illustrating the magnetic disk device in FIG. 16;

FIG. 19 is a front view of FIG. 18.

20 is an enlarged perspective view of a C part in FIG.

FIG. 21 is a plan view of a head support mechanism of a conventional magnetic disk device.

22 is a front view of FIG. 21. FIG.

FIG. 23 is a configuration diagram of a main part of a magnetic disk device.

[Explanation of symbols]

 11 Disk 12 Positioner 12a Sloping Surface 13 Integrated Integrated Magnetic Head 13a Base 13b Head 13c Attachment 14 Head Support Means

Claims (4)

[Claims] 1. A plurality of discs (11) rotatably provided and stacked in layers at a predetermined interval, a disc drive unit for rotationally driving the discs (11), and a tip portion of the discs (11). A positioner (12) extending on each recording surface and movably provided so as to cross the track of the disc (11), and a tip end of the positioner (12) crosses the track of the disc (11). A positioner (12) drive unit driven to
A magnetic disk device comprising a recording / reproducing unit which is provided on the tip end side of the positioner (12) and reads / writes data from / into the recording surface of the disc (11), wherein the recording / reproducing unit is a thin plate. Shaped base part (13a),
An integrated type integrated magnetic head (13) including a head portion (13b) formed at the tip of the base portion (13a) and an attachment portion (13c) formed on the base end side of the base portion (13a). ) Is used to attach the integrated type integrated magnetic head (13) (13).
c) A thin plate-shaped head support in which the base end side is provided at the tip of the positioner (12) and the tip side is formed with an inclined surface (14a) inclined toward the recording surface of the disk (11). A magnetic disk drive, characterized in that it is attached to the inclined surface (14a) of the means (14). 2. When the tip of the positioner (12) is between the disks (11) arranged in a stack, the support means has a base end provided at the tip of the positioner (12) and an inclined surface. A first support member that is inclined toward the recording surface of one disc (11), and a base end portion is laminated on the base end portion of the first support member, and the inclined surface is the recording of the other disc (11). Second inclined in the plane direction
2. The magnetic disk drive according to claim 1, further comprising: 3. When the tip of the positioner (12) is between the stacked discs (11), the support means includes a base end provided at the tip of the positioner (12) and one of A support member composed of a first inclined surface portion inclined in the recording surface direction of the disc (11) and a second inclined surface portion inclined in the recording surface direction of the other disc (11), The magnetic disk device according to claim 1. 4. A plurality of rotatably provided discs arranged at predetermined intervals, a disc drive unit for rotationally driving these discs, and a tip portion extending on each recording surface of the disc, A positioner movably provided so as to traverse the track of the disc, a positioner drive unit that drives the positioner so that the tip end thereof traverses the track of the disc, and a positioner tip end side of the positioner that is provided at the end of the disc A magnetic disk device comprising first and second recording / reproducing sections for reading / writing data on / from the inner track and the outer track, respectively. An elastic thin plate-shaped base portion, a head portion formed at the tip of the base portion, and a base end portion of the base portion. Using the first and second integrated type integrated magnetic heads, the mounting part of the integrated type integrated magnetic head is provided at the base end side at the tip of the positioner and at the tip side of the disk. The magnetic disk device is characterized in that it is attached to an inclined surface of a thin plate-shaped head supporting means having an inclined surface inclined toward the recording surface.