JP3326632B2 - Flexible harness connection structure of disk drive head assembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a disk drive,
Particularly in media size of the micro floppy disk drive (MF D D), S0 head and S1 head flexible harness and S respectively for S0 head
The present invention relates to a flexible harness connection structure for connecting with a flexible harness for one head.

[0002]

2. Description of the Related Art A disk drive has a head assembly 101 as shown in FIG. The head assembly 101 includes a head carriage 103 provided with an S0 head 102, and a head arm pivotally supported at one end by a leaf spring 105 on a head arm pivot support portion 104 provided on the head carriage 103 so as to be rotatable vertically. 106, and an S1 head 10 provided on the other end side (free end side) of the head arm 106 so as to face the S0 head 102.
7 and is slidably mounted on the chassis 108.

The S0 head 102 and the S1 head 107 have a flexible harness 109 for the S0 head and a flexible harness 11 for the S1 head, respectively.
0 are connected, and the other ends of the flexible harness 109 for the S0 head and the flexible harness 110 for the S1 head are connected to connectors 111 and 112 provided on a printed circuit board (not shown). .

[0004] The S0 head 102 and the S1 head 107 sandwich the upper and lower surfaces of a disk as a medium, and the S0 head 102 and the S1 head 107 seek to perform recording / reproduction. .

The above-mentioned S0 head 102 and S1 head 107
The flexible harness 109 for the S0 head and the flexible harness 1 for the S1 head
10 , two in the head seek direction as shown in FIG.
Folded in portion 109a, have 110a is provided, the folded portion 109a when the head assembly is slid, by shrinking the so-called growth in 110a, even when the head seek, connectors S0 head 102 and S1 head 107 It is designed to surely maintain the connection state to 111 and 112.

[0006]

In the conventional flexible harness connection structure, the flexible harness 109 for the S0 head and the flexible harness 110 for the S1 head are folded in the seek direction. There was a problem as described.

(1) At the time of head seek, the folded portion of the flexible harness 109 for the S0 head comes into contact with the chassis 108 and the like, and is rubbed to generate static electricity (electromagnetic waves).
And a read / write error occurs due to the static electricity.

(2) At the time of head seek, the folded portion of the flexible harness 110 for the S1 head comes into contact with a top cover (not shown) disposed above the head assembly and is rubbed, so that static electricity is discharged. appear.

(3) At the time of head seek, the flexible harness 109 for the S0 head and the flexible harness 110 for the S1 head come into contact with each other and may be rubbed to generate static electricity.

[0010] The present invention solves the above-mentioned conventional problems and provides a harness connection that can prevent the generation of static electricity by rubbing the flexible harness for the S0 head and the flexible harness for the S1 head even during head seeking. It is intended to provide a structure.

[0011]

According to the first aspect of the present invention, the S0
One end of a head arm is pivotally supported on a head carriage provided with a head so as to be rotatable in a vertical direction, and an S1 head is mounted on the head arm at a position facing the S0 head. Is S
In a flexible harness connection structure of a disk drive head assembly which is connected to a connector by a flexible harness for the 0 head and a flexible harness for the S1 head, a flexible connection for the S0 head having one end connected to the S0 head. The harness is guided along the upper surface of the head carriage to the end of the head carriage on the side of the head arm pivot portion, and is bent upward near the end toward the head arm pivot portion. After bending in the head seek direction near the support and fixing the bent portion to the head carriage with a fixing member,
Fold back the part before this fixed part and
And connect the tip end to the connector.
Connect the flexible harness for one head to the head arm
Along the plane to the pivot end of the head arm
When it is bent in the head seek direction near the end
Both are twisted 90 °, and the head arm is fixed with a fixing member near the head.
After fixing it to the
To the head side and connect the tip end to the connector.
Was.

According to a second aspect of the present invention, in the flexible harness connection structure of the first aspect, the flexible structure for the S0 head is provided.
To the head carriage with the fixed member of the kibble harness
A fixed tipped folded portion than the fixed portion, cut
Extend along the first side of the set holder,
At the first corner of the damper, at a substantially right angle,
After extending a predetermined amount along the second side of the
To the connector and the S1 head
To the head carriage with the fixed member of the kibble harness
Insert the folded part beyond the fixed part
Extending along the first side of the cassette holder, the cassette holder
At the first corner of the cassette holder,
After extending a predetermined amount along the second side of
Connected to connector.

[0013] The invention of claim 3 is claim 1 or claim 2.
In the flexible harness connection structure of
Harness for S1 and flexible for S1 head
The part between the fixing member of the shiburu harness and the connector
The media above and the cassette holder up and down.
From the outside of the camera so that they are parallel to each other.
Was placed.

[0014]

In the flexible harness connection structure according to the first aspect, the flexible harness for the S0 head is guided along the upper surface of the head carriage to the end of the head carriage on the side of the head arm pivot. , bent upward toward the head arm pivot portion at the end portion near the bent head seek direction by the head arm pivot portions vicinity, after fixed to the head carriage to the bent portion by a fixing member, this
Fold back the part beyond the fixing part of
To the connector and connect the tip end to the connector.
Connect the flexible harness for the head to the flat
Along the surface, it is guided to the end of the head arm on the side of the pivot,
In the vicinity of the end, bend toward the head seek direction and
Twist 90 ° and fix the vicinity of this part to the head arm with a fixing member.
After fixing, turn the part beyond this fixed part
And connect it to the connector by guiding it to the head side.
Configuration, do not increase the width of the disk drive device.
At least, by the folded part ahead of the fixed part,
The part fixed to the head arm with the fixing member and the tip
Increase the distance between the part connected to the connector (see above)
Connect the part fixed to the head arm with the fixing member and the tip
The distance between the parts connected to the
The space between them can be flexed flexibly.

In the flexible harness connection structure according to the second aspect, the flexible cable for the S0 head is used at the time of head seeking.
The shibble harness is fixed to the head cap with a clip or other fixing member.
The part fixed to the ridge and the part connected to the connector,
Specifically, extending along the first side of the cassette holder
Along the cut portion and the second side of the cassette holder
The extended portion bends and follows the slide of the head assembly.
Obey.

In the flexible harness connection structure according to the third aspect, the flexible harness for the S0 head and the flexible harness
Fixing member and connector of flexible harness for 1 head
The parts between the fins are arranged in a substantially parallel state with a desired spacing.
The head is located at
Flexible harness for S1 and Flexi for S1 head
Bull harnesses bend in the same way, so these harnesses
The harnesses are always kept at a fixed distance,
You can prevent conflicts.

[0017]

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

FIG. 1 is a perspective view of a main part of a medium-size floppy disk drive provided with a head assembly flexible harness connection structure according to the present invention.

The head assembly 1 includes an S0 head 2 (FIG. 2)
The head arm 6 of the head carriage 3 is provided with a leaf spring 5 to pivotally support one end of the head arm 6 so as to be rotatable in the vertical direction. It is formed by providing the S1 head 7 at a position facing the S0 head 2.

The head assembly 1 is slidably mounted on a chassis.

The S0 head 2 and the S1 head 6
Are the flexible harnesses 1 for the S0 head, respectively.
1 and a flexible harness 12 for the S1 head are connected to a connector 13 on a printed circuit board.

The flexible harness 11 for the S0 head is formed in a thin band shape, and one end is connected to the S0 head 2 as shown in FIG.

The flexible harness 11 for the S0 head is guided to the end of the head carriage 3 on the side of the head arm pivot 4 in a state of being superimposed on the upper surface of the head carriage 3, and near the end. Are bent substantially at right angles toward the head arm pivot 4, that is, upward.

The flexible harness 11 for the S0 head is bent at a substantially right angle in the head seek direction (AB direction in FIG. 2) in the vicinity of the head arm pivot 4 so as to be bent. 11a is fixed to the head carriage 3 by a fixing member 14.

As shown in FIG. 1, the portion of the flexible harness 11 for the S0 head beyond the bent portion 11a is located above a cassette holder (cascon) 16 into which a medium 15 such as a disk cassette is inserted. , The outside of the cassette holder 16 , the first side face 16 a
The cassette holder 16 is bent at a substantially right angle at a first corner 16b of the cassette holder 16, and further extends a predetermined amount along the second other side surface 16c of the cassette holder 16, and then its tip Is inserted into the connector 13.

In FIG. 2, reference numerals 21, 22, and 23 denote harness-suppressing pawls provided on the head carriage 3, and the flexible harness 11 for the S0 head is moved by the pawls 21, 22, and 23. It is designed to be locked while positioned above.

Reference numerals 24 and 25 denote first and second harness bending members provided on the head carriage 3 for bending the flexible harness 11 for the S0 head.

The first harness bending member 24 is disposed below the second harness bending member 25 and has one side surface 2.
At 4a, the flexible harness 11 for the S0 head can be bent upward at a substantially right angle.

Further, the second harness bending member 25 includes:
As shown in FIG. 3, it has a 45 ° inclined surface 25a.

Then, the flexible harness 11 for the S0 head, which is bent upward at a right angle by the first harness bending member 24, is moved from the back side of the second harness bending member 25 to the inclined surface 25a and the front surface. 25b, the flexible harness 11 for the S0 head
Will folded state to the head seek direction and self not a.

Further, the fixing member 14 sandwiches the bent portion 11a of the flexible harness 11 for the S0 head bent by the second harness bending member 25 between the second harness bending member 25. Then, the bent part 1
1a is fixed to the second harness bending member 25.

In FIG. 2, reference numeral 26 denotes a guide shaft for guiding the slide of the head carriage 3, and 27 denotes a rack for sliding the head carriage 3 along the guide shaft 26.

Next, the flexible harness 12 for the S1 head will be described.

One end of the flexible harness 12 for the S1 head is connected to the S1 head 7 as shown in FIG.

The flexible harness 12 for the S1 head is guided to the end on the head arm pivot 7 side in a state of being superposed on the lower surface of the head arm 6, and is bent at a bent portion 12a near the end. It is bent in the head seek direction.

The flexible harness 12 for the S1 head is provided with a 90 ° twisted portion 12b near the bent portion 12a.

Then, the flexible harness 12 for the S1 head is raised from the horizontal state to the vertical state by the torsion portion 12b, and is fixed to the head arm 6 by the fixing member 31.

The fixing member 31 includes a main body 32 detachably attached to one side of the head arm 6, and a pair of clips 33, 3 provided on one side of the main body 32.
The flexible harness 12 for the S1 head is sandwiched between one side surface of the main body 32 and the clips 33 and 34, and the flexible harness 12 is positioned and fixed to the head arm 6.

[0039] Then, the flexible harness 12 is fixed above the portion from locations in the fixing member 31 for the S1 head, as shown in FIG. 1, the interior of the flexible harness 11 for the S0 head, which And the connector insertion portion 12c at the tip thereof
There has been fitted to the connector 13.

In FIG. 4, reference numerals 35 and 36 denote harness locking portions provided on the head arm 6.

The harness connection structure of the embodiment has the above configuration, and is a flexible harness 1 for the S0 head.
In 1, the portion between the portion fixed to the head carriage 3 by the fixing member 14 and the portion connected to the connector 13 bends to follow the sliding of the head carriage 3.

In the flexible harness 12 for the S1 head, the space between the portion fixed to the head arm 6 by the fixing member 31 and the portion connected to the connector 13
It flexes in the same manner as the flexible harness 11 for the 0 head, and follows the sliding of the head carriage 3.

The fixtures of the flexible harness 11 for the S0 head and the flexible harness 12 for the S1 head and the connector are arranged in parallel at a desired interval, so that they follow the slide of the head carriage 3 and Flexible harness 11 for S0 head and S1
Even if the head flexible harness 12 bends, the two bend in the same way, so that the distance between them is kept substantially constant, and the two flexible harnesses 11 and 12 are reliably prevented from rubbing against each other. You can do it.

[0044]

The flexible harness connection structure of the head assembly of the disk drive according to the present invention has the following effects.

[0045] (1) In the invention of claim 1, S0 f
Flexible harness for head and frame for S1 head
The part folded in two like the conventional kibble harness
No flexible harness for S0 head
And chassis, etc., or flex for S1 head
Generation of static electricity due to friction between the harness and the cover
To prevent read / write errors caused by static electricity.
Life can be prevented. In addition, the frame for S0 head
Flexible harness for kibble harness and S1 head
Turn back the part before the fixing part of the
To the connector and connect the tip to the connector.
So, without expanding the width of the disk drive (device),
The fixing member is formed by a folded portion earlier than the fixing portion.
In contact with the connector on the fixed part and the tip Heddoa arm
Earn (increase) the distance between the connected parts,
Connect the part fixed to the head arm with the fixing member and the tip
Can flex flexibly between the parts connected to the
Wear.

[0046] (2) In the invention of claim 2, the solid
The folded part ahead of the fixed part is the first part of the cassette holder.
Of the cassette holder and the second part of the cassette holder
It is composed of both parts extending a predetermined amount along the side of
Then, the length of the folded part ahead of the fixed part is more
Can be longer.

[0047] (3) In the invention of claim 3, S0 f
Flexible harness for head and flexible for S1 head
Sibble harnesses were arranged in parallel with desired spacing
So, at the time of head seek, both harnesses are the same
To prevent the harnesses from touching and rubbing each other.
Can be

[Brief description of the drawings]

FIG. 1 is a perspective view of a flexible harness connection structure of the present invention.

FIG. 2 is a perspective view of a flexible harness portion for an S0 head.

FIG. 3 is a side view of a main part.

FIG. 4 is a perspective view of a flexible harness portion for the S1 head.

FIG. 5 is a perspective view of a conventional flexible harness connection structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Head assembly 2 ... S0 head 3 ... Head carriage 4 ... Head arm pivot part 6 ... Head arm 7 ... S1 head 11 ... Flexible harness for S0 head 12 ... Flexible harness for S1 head 13 ... Connector 14, 31 ... Fixed Element

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G11B 25/04 101 G11B 33/12 304

Claims (3)

(57) [Claims] 1. An S1 head is mounted on a head carriage provided with an S0 head such that one end of a head arm is pivotally supported in a vertically rotatable manner, and an S1 head is mounted on the head arm at a position facing the S0 head. These S0 head and S
In a flexible harness connection structure of a disk drive head assembly in which one head is connected to a connector with a flexible harness for the S0 head and a flexible harness for the S1 head, the S0 head having one end connected to the S0 head. The flexible harness for the head is guided to the end of the head carriage on the head arm pivot portion side along the upper surface of the head carriage, and is bent upward toward the head arm pivot portion near the end portion. After being bent and bent in the head seek direction near the head arm pivot, the bent portion is fixed to the head carriage by a fixing member .
The front part is folded back and guided to the head side.
The flexible harness for the S1 head is connected to the connector
Along the plane of the arm, at the pivot end of the head arm
And bent toward the head seek direction near the end.
And is twisted 90 °, and the vicinity of the part is a fixing member.
After fixing to the head arm with
Part is folded back and guided to the head side
A flexible harness connection structure for a disk drive head assembly, wherein the side is connected to a connector . 2. A flexible harness for said S0 head.
Fixed to the head carriage with the fixing member
The folded part before the part is the first part of the cassette holder.
1 along the side, approximately at the first corner of the cassette holder
A second side of the cassette holder bent at a right angle
After extending a predetermined distance along
And the fixing portion of the flexible harness for the S1 head.
Material before the fixed part fixed to the head carriage.
Ri returned portion, along a first side surface of Kassetohoruda
Extend and bend at approximately the right angle at the first corner of the cassette holder
Along the second side of the cassette holder
2. The flexible harness connection structure for a disk drive head assembly according to claim 1 , wherein the distal end is connected to the connector after being extended by an amount . 3. A flexible harness for an S0 head.
And the flexible harness for the S1 head are fixed members
Between the part fixed with and the part connected to the connector
Is above the media and vertically in the cassette holder
Parallel to each other at a desired distance from each other
Flexible harness connection structure of a head assembly of a disk drive according to claim 1 or claim 2 is disposed.