JP3231806B2 - Disk drive device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for moving a head carriage on which a head is mounted in a radial direction of a spindle.
In a disk drive device for recording / reproducing a disk rotated by a spindle, the structure of a guide mechanism for guiding the movement of the head carriage is simplified.

[0002]

2. Description of the Related Art FIGS.
As shown in the figure, a spindle 102 for rotating a disk 101 as a recording medium, a head 103 for reading / writing a signal of the disk 101 rotated by the spindle 102, and a radius of the spindle 102 Carriage 1 to move in the direction
04, a driving shaft (lead screw) 105 for driving the head carriage 104, and a stepping motor 106 for rotating the driving shaft 105. When the driving shaft 105 is rotated by the stepping motor 106, the driving The rotation of the shaft 105 causes the head carriage 10
4 moves in the seek direction while recording /
A device for performing reproduction is known.

Reference numeral 107 denotes a main guide for restricting (restricting) the movement of the head carriage 104 in a direction other than the seek direction, and reference numeral 108 denotes a sub-guide for restricting the movement of the head carriage 104 in the height direction. The guide shafts serving as the main guide 107 and the sub guide 108 are attached to the spindle motor stator 110 by guide shaft attachment members 109.

[0004]

However, in the above-mentioned conventional disk drive, since the guide shafts are used for the main guide 107 and the sub guide 108, there are the following problems.

(1) Since the guide shaft is used not only for the main guide 107 but also for the sub guide 108, the number of parts increases accordingly.

(2) An operation process for mounting the guide shaft as the sub-guide 108 to the spindle motor stator portion 110 by the guide shaft mounting member 109 is required, and the number of disk drive assembling processes is increased, leading to an increase in product cost. Become.

According to the present invention, the conventional problems described above can be solved by omitting a guide shaft as a sub-guide and using one end of the chassis as a sub-guide.

[0008]

A spindle for rotating a disk as a recording medium, a head for reading / writing a signal of the disk rotated by the spindle, and moving the head in a radial direction of the spindle. And a head carriage for supporting the head carriage.
In the disk drive device having the chassis , the head carriage has a
Head mounting surface and a first
And a guide portion and the second guide portion, the first moth
The guide portion is a guide shaft provided on the head carriage.
An insertion hole and the guide shaft provided in the chassis
By inserting the head carriage into the insertion hole,
Moveable in seek direction and restricts movement in other directions
And a guide shaft for guiding the second guide portion.
Is the carriage guide clamp provided on the chassis side.
A guide portion main body that contacts upper and lower surfaces of the attachment portion;
Is provided on the main body of the
A leaf spring for sandwiching the clamped portion with the guide body
And

[0009]

The head carriage is driven by the second guide section.
The carriage guide provided on one side of the chassis
The upper and lower surfaces of the clamped portion are sandwiched to flexibly absorb variations in the mounting accuracy of the head carriage, and the head carriage is moved smoothly in the seek direction without rattling.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to FIGS.

1 to 5, reference numeral 1 denotes a disk drive of the present invention.
A spindle (motor) 3 for rotating a disk 2 as a recording medium, and a head 4 for reading / writing signals of the disk 2 rotated by the spindle 3
A head carriage 5 for moving the head 4 in the radial direction of the spindle 3, a drive shaft 6 for driving the head carriage 5, and a stepping motor 7 for rotating the drive shaft 6. When the drive shaft 6 is rotated at 7, the head carriage 5 performs recording / reproduction while moving in the seek direction.

The head carriage 5 is mounted on a sub-chassis 8 as a motor stator part of the spindle 3 to form a spindle head unit 9.

The drive shaft 6 and the stepping motor 7 are mounted on a mechanical chassis (main chassis) 10.

A turntable 31 is provided on the spindle 3. The disc 2 is mounted on the turntable 31, and the disc 2 is rotated.

As shown in FIG. 2, the head 4 has a head chip 41, a head base 42 on which the head chip 41 is mounted on one side, and a head base 42 which is mounted on an upper surface of the head base 42 and has a central portion. And a circular stabilizing plate 43 that slightly protrudes the upper end of the head chip 41 from the notch window 43a provided in the head 4. The head 4 is provided between the head chip 41 and an amplifier (not shown). A signal transmission unit 44 for receiving and transmitting signals is provided.

The signal transmission section 44 has a conductor wire 45 connected to the head chip 41 and an electrical connection (land portion) 46 to the conductor wire 45 at one end, and to the amplifier at the other end. Electrical connection portion (land portion) 48 with connected conductor wire 47
The terminal board 50 has a flexible terminal plate 50 having a conductive pattern 49 formed thereon. One end of the terminal plate 50 is disposed on the side surface of the head base 42 opposite to the side surface on which the head chip 41 is mounted. The other end of the plate 50 is disposed on the back side of the head mounting surface described below.

The head carriage 5 has a head mounting surface 51 on which the head 4 is mounted, and first and second guide portions 52, 53 arranged so as to sandwich the head mounting surface 51.
And a driving force transmitting portion 54 connected to the first guide portion 52
And a lead meshing portion 55 provided at the end of the driving force transmitting portion 54 is meshed with a lead screw as the drive shaft 6.

The first guide portion 52 is provided with a guide shaft insertion hole 56.

When the guide shaft 11 is inserted into the guide shaft insertion hole 56, the head carriage 5 seeks along the guide shaft 11.

As shown in FIG. 4, both ends of the guide shaft 11 are mounted on the longitudinal ends of the rectangular cutout window 8a of the sub-chassis 8 by guide shaft mounting members 61, 61.

As shown in FIG. 6, the guide shaft mounting member 61 is slidably mounted in a direction orthogonal to the length direction of the cutout window 8a, and is firstly screwed to one end surface 62. When the screw 63 is turned, the tip of the screw 63 comes into contact with one end surface 8b of the sub-chassis 8, and expands and contracts the first spring 64 interposed between the inner surface of the cutout window 8a and the guide shaft mounting member 61. The guide shaft 11 is slid in the direction perpendicular to the length direction of the cutout window 8a while moving the end of the guide shaft 11 in the horizontal direction.

A second adjusting screw 65 is screwed on the lower surface of the guide shaft mounting member 61. When the screw 65 is turned, the guide shaft 11 is connected to the tip of the guide shaft 11 via the spacer 66. , A second spring 67 disposed thereabove.
Is lifted up against the spring force of (1) to move the end of the guide shaft 11 in the vertical direction.

Further, the second guide portion 53 is provided in FIGS.
As shown in the figure, the carrier provided at one end of the sub-chassis 8
A guide portion main body 58 that comes into contact with the upper surface of the clamped portion 8c for the ridge guide via the tip of the pin 57;
8 a plate spring support portion 59 provided at one end of the leaf spring 60 attached to the plate spring support portion 59 is formed in a substantially U shape, the object in the guide body 58 and the leaf spring 60 and lightly sandwich as the clamping portion 8c, the target clamping portion 8c
It slides along. The above pin 57
Is provided on the guide portion main body 58, and its tip is upward.
It comes into contact with the upper surface of the to-be-clamped portion 8c.

Reference numeral 8d denotes a guide groove provided in the clamped portion 8c in order to reduce the contact resistance between the tip of the pin 57 and the clamped portion 8c. The pin 57 is connected to the guide groove 8d.
On both sides in the width direction (carriage movement direction)
Therefore, the contact resistance between the pin 57 and the clamped portion 8c is reduced.
Swelling.

The disk drive device of the embodiment has the above-described structure. When the drive shaft 6 is rotated by the stepping motor 8, the head carriage 5 has one end along the guide shaft 11 and the other end. Is sought in a state where the movement in the height direction is restricted along the clamped portion 8c on one end side of the sub-chassis 8.

[0026]

As described above, according to the disk drive of the present invention , the head carriage is mounted on the head carriage.
Between the head mounting surface where the head is mounted and the head mounting surface
A first guide portion and a second guide portion disposed
The first guide section is provided on the head carriage.
Guide shaft insertion hole, and provided on the chassis
And inserted into the guide shaft insertion hole,
The carriage can be moved in the seek direction and in the other direction.
And a guide shaft that regulates and guides movement to
The second guide portion is a carriage provided on the chassis side.
Guide section book that contacts the upper and lower surfaces of the clamped section for guide
Body and the guide portion main body,
The pinched part between the guide part body and the other surface in contact with the other surface
And a leaf spring sandwiching the spring. Therefore, the head carry
The edge of the chassis is controlled by the second guide section.
The upper and lower surfaces of the carriage guide clamped portion
As a result, it is possible to flexibly absorb variations in mounting accuracy of the head carriage and to smoothly move the head carriage in the seek direction without rattling.

[Brief description of the drawings]

FIG. 1 is a plan view of a disk drive device according to the present invention.

FIG. 2 is a perspective view of a main part.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a plan view of a spindle head unit.

FIG. 5 is a front view of a spindle head unit.

FIG. 6 is a sectional view of a guide shaft mounting member.

FIG. 7 is a plan view of a conventional disk drive device.

FIG. 8 is a sectional view of a main guide shaft portion.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disk drive device, 2 ... Disk, 3 ... Spindle, 4 ... Head, 5 ... Head carriage, 8 ... Subchassis (spindle motor stator part), 52 ... First
Guide part, 53 ... second guide part .

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-3-268278 (JP, A) JP-A-63-55261 (JP, U) JP-A-60-60068 (JP, U) JP-A-2- 92262 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) G11B 21/02

Claims (1)

(57) [Claims] And 1. A spindle for rotating the disk as a recording medium, a head for writing read / signals of the disk of the signal that is rotated by the spindle, a head carriage for moving the head in the radial direction of the spindle , A chassis supporting the head carriage
Wherein the head carriage has a head on which the head is mounted.
A mounting surface, and a first gasket disposed across the head mounting surface.
And a second guide section, wherein the first guide section is provided on the head carriage.
The guide shaft insertion hole and the chassis
By inserting the head into the guide shaft insertion hole,
The carriage can be moved in the seek direction and
A guide shaft that regulates and guides movement, and wherein the second guide portion is provided with a carrier provided on the chassis side.
A guide that contacts the upper and lower surfaces of the clamped part for the edge guide.
The main body and the guide body provided on the guide main body,
Contacting the other surface of the guide part with the guide part body
A disk drive device comprising: a leaf spring sandwiching a mounting portion .