JPS62185287A - Hard disk device - Google Patents

Abstract

PURPOSE:To obtain a hard disk device capable of increasing the number of disks in piles by disposing a pair of magnetic disc supporting parts that stretch between two neighboring disks so that they cross each other. CONSTITUTION:The gimbal 36A facing the lower surface of a disk 6A and one 36B facing the upper surface of a disk 6B are disposed in a manner that the fixing point 37B of the gimbal 36B places itself above the fixing point 37A of the gimbal 36A. This means that the gimbals 36A and 36B are so disposed as to cross each other. As a result, the distance B2 between the disks 6A and 6B comes to: B2=C1+C2-t. Since the interval between the neighboring disks is thus made narrower, the number of disks to be loaded within a limited height can be increased. Hence the storage capacity of the titled device can be enlarged.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention holds a magnetic head with a small gap on a hard disk rotating at high speed, and records information on the disk via this magnetic head. The present invention also relates to a hard disk device for retrieving information stored on a disk, and particularly to a hard disk device characterized by a head support mechanism that supports a magnetic head.

[Prior art]

The conventional hard disk device is disclosed in Japanese Patent Application Laid-Open No. 58-70470.
Taking the example of the publication, the structure is as shown in FIG. 11. That is, a spindle motor 4 is disposed within the base 2, and a plurality of hard disks 6 are stacked on the spindle motor 4 with spacers 8 interposed therebetween, and are fixed with clamps 9.

They are rotated together at high speed by a spindle motor 4. A magnetic head support mechanism 10 driven by a step motor 12 is built into the base 2 . This head support mechanism 10 has one end fixed to a head arm 15, a gimbal 16 that is a head support part that supports a magnetic head 17 is attached to the tip, and the head arm 15 is stacked and fixed in the vertical direction to form a flex arm 1.
It is integrated into 4. Code 18 is a steel belt, 1
9 is the cap stan, 20 is the shaft.

21 is a bearing, and 22 is a head FPC for transmitting a signal from the magnetic head 17 to a printed circuit board 23. Further, numeral 24 is a filter for purifying the inside of the base 2, numeral 26 is a gasket, numeral 28 is a cover, and numeral 3 is a filter for purifying the inside of the base 2.
0 is a frame assembled to the base 2, and numeral 32 is a panel.

To briefly explain the operation of this hard disk device, first, the spindle motor 4 rotates the disk 6 at high speed, and the step motor 12 is driven to drive the head support mechanism 1.
0, position the magnetic head 17 accurately at the location ', ;f, and perform 1; writing or reading via the magnetic head 17. The signal read by the magnetic head 17 is amplified by the head FPC 22, sent to a printed circuit board 23 which is a control circuit, and converted into necessary information.

[Problem to be solved by the invention]

FIG. 12 is a simplified side view of the main parts of a conventional head support mechanism. direction). Therefore, the distance B between adjacent disks 6.6 is:
At least, the minimum required size C1-C2 (= c t
) and the predetermined thickness t of the head arm mounting portion C, +C, +t). As described above, in conventional hard disk drives, the disk spacing is set from the above-mentioned point of view, and the number of stacked disks is therefore limited.

The present invention has been made in view of the problems of the prior art, and an object thereof is to provide a hard disk device that can increase the number of stacked disks.

[Means for solving problems]

The present invention, as shown in FIG.
(6A, 6B) The gimbals 36A, 36B (the gimbal facing the bottom surface of the disk 6A is 36A, and the gimbal facing the top surface of the disk 6B is 36B) are fixed to the gimbal 36A. The gimbal 36B is disposed so that the fixed point 37B of the gimbal 36B is located above the point 37A, that is, the gimbals 36A and 36B are disposed so as to cross each other.

[Effect]

The distance B between adjacent disks 6A and 6B is B2=C
, +C2-t, and the conventional distance between adjacent disks B,
(See FIG. 12), it is clearly smaller.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

2 to 4 show a first embodiment of the present invention. In these figures, the parts other than the head support mechanism are the first
Since there is no difference from the conventional apparatus shown in FIG. 1, the description will focus on the peripheral parts of this head support mechanism that are different from the conventional apparatus, and the same parts as the conventional apparatus structure will be given the same reference numerals and the explanation thereof will be omitted.

Reference numeral 40 denotes a head support mechanism built into the base 2, which has a flex arm 14 and a head arm 42 extending in opposite directions with respect to a swing fulcrum 41.

The head arm 42 has a first head arm 42A extending from the tip of the head arm and a second head arm 42B extending from near the swing fulcrum 41. Each arm 42A, 42B has a magnetic head support section. A gimbal 44A.

Magnetic heads 46A and 46B are attached via 44B. In addition, 44A (44B), 46A (46B)
1 and 2 show a gimbal and a magnetic disk, respectively, which are provided opposite to the lower surface (upper surface) of the disk 6. The gimbals 44A and 44B are shown enlarged in FIGS. 5(a) and 5(b), with the magnetic head 46A facing the bottom surface of the disk 6, and the magnetic head 46B facing the top surface of the disk 6. In terms of the direction of movement caused by swinging around the swing fulcrum 41, the head 46A and gimbal 44A are mounted as a standard type, and the head 46B and gimbal 44B are mounted as an in-line type. In addition, code 4
8 is a mounting screw for fixing the gimbals 44A, 44B to the head arm 42.

In this embodiment, the fixed points of the pair of gimbals 44A and 44B extending between the adjacent disks 6.6 are at the same height in the disk stacking direction (vertical direction in FIG. 4), and the distance between the adjacent disks @B is: If the minimum required size from the mounting surface of the gimbals 44A, 44B to the head arm 42 to the surface of the magnetic disk 6 is C, , C, then B, = C.

102, the thickness t of the head arm attachment part where the gimbal 44 is attached compared to the conventional technology (see Figure 12)
It has become smaller by a considerable amount.

Therefore, as many disks 6 can be arranged in a space of a predetermined height of the container. In other words, the storage capacity of the hard disk device can be increased accordingly. In other words.

The entire hard disk device can be made thinner.

FIG. 6 shows a second embodiment of the invention.

In the first embodiment, the swinging fulcrum 41 was formed at approximately the center in the longitudinal direction of the arm consisting of the flex arm 14 and the head arm 42, but in this embodiment, the swinging fulcrum 41 was formed at the approximate center of the arm in the longitudinal direction. It has a structure in which the magnetic head 46 is formed at the end, and the magnetic head 46 is provided on the side where the step motor 12 is disposed.

FIG. 7 shows a third embodiment of the invention.

The first embodiment (see Fig. 2) and the second embodiment (
(see FIG. 6) are positive track type head support mechanisms in which the arm is swung around the fulcrum 41 to move the position of the magnetic head 46 in the radial direction of the disk. The head support mechanism is of a linear type in which the head arm 42 is moved back and forth in the radial direction of the disk. Note that the reference numeral 50 is a rail, and the reference numeral 52 is a roller that engages with this rail 50.

FIG. 8 shows a fourth embodiment of the present invention.

In this embodiment, the magnetic heads 46A and 46B are shifted in the circumferential direction of the disk so that they do not overlap with each other.
This is different from the first embodiment (see FIG. 2). Therefore, when assembling the head support mechanism of the apparatus of this embodiment, there is an advantage that the magnetic heads 46A and 46B are less likely to interfere with each other, making the assembly work easier.

9 and 10 show a fifth embodiment of the present invention.

In this embodiment, a gimbal 44 (44A) is provided on the hella door 1142 and the flex arm 14, respectively.

44B) to support the magnetic head 46,
The magnetic heads 46A and 46B are arranged at positions widely separated from each other. The magnetic heads 46A and 46B are both of the standard type as shown in FIG. 5(a).

In this embodiment, the magnetic heads 46A and 46B are arranged further apart from each other than in the fourth embodiment (see FIG. 8).
The work of assembling the head support mechanism becomes even easier. Further, the distance B4 between the disks 6 and 6 is B,=C1+C2, as shown in FIG. 10, which is clearly smaller than the conventional distance B1 between the disks.

〔effect〕

As is clear from the following explanation, according to the present invention, the distance between adjacent disks can be narrowed, so by increasing the number of disks that can be mounted within a limited height, the hard disk drive can be improved. Storage capacity can be increased. Furthermore, it is also possible to reduce the height of the entire hard disk device.

[Brief explanation of drawings]

Fig. 1 is a basic conceptual diagram of the present invention, Fig. 2 is a plan view of the first embodiment of the invention, Fig. 3 is a perspective view of its main parts, Fig. 4 is a side view of its main parts, and Fig. 5 (a) and (b) are plan views showing the positional relationship between the gimbal, which is a head support part, and the magnetic head;
6 is a plan view of the second embodiment of the invention, FIG. 7 is a plan view of the third embodiment of the invention, FIG. 8 is a plan view of the fourth embodiment of the invention, and FIG. The figure is a plan view of the fifth embodiment of the present invention, FIG. 10 is a side view thereof, FIG. 11 is an exploded perspective view of a conventional hard disk drive, and FIG. 12 is a simplified enlarged side view of the main parts thereof. be. 6 (6A, 6B)...Hard disk, 36 (
36A, 36B), 44 (44A, 44B)...Gimbal which is a magnetic head support part, 42...Head arm, 46 (46A, 46B)...Magnetic head.

Claims (3)

[Claims] (1) In a hard disk drive in which a plurality of hard disks are arranged in a stacked manner with a distance that allows insertion of a magnetic head between adjacent disks, a pair of magnetic head support parts extending between adjacent disks cross each other. A hard disk device characterized by: (2) The pair of magnetic head support sections are fixed to a head arm, and the point at which the magnetic head support sections are fixed to the head arm is shifted in the circumferential direction of the disk. Hard disk device listed. (3) A magnetic head is attached to each tip of the magnetic head support section, and the magnetic heads are arranged so that they do not overlap each other in the disk stacking direction. Hard disk device described in section.