JP3331858B2 - Flexible disk drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a flexible disk device to read the head data in the flexible disk, and more particularly to a structure of a flexible print board for connecting with the head and the substrate.

[0002]

2. Description of the Related Art FIG. 9 is an exploded perspective view showing the structure of a conventional flexible disk drive (hereinafter abbreviated as FDD). Further, the magnetic head of the FDD is a double-sided head type, and in the figure, 10 is an upper head, 20 is a lower head, 30 is a carriage supporting the lower head 20, 40
Is an arm for supporting the upper head 10, and 50 is a holder.
It is configured to be screwed to. Further, 55 is a head driving means for driving the top head 10 and the lower surface head 20 by the driving of the carriage 30, and by a mounting means such as a lead screw c mounting the carriage 30 to the stepping motor and the stepping motor. Reference numeral 60 denotes an upper flexible printed circuit board (hereinafter referred to as FP) of a strip-shaped conductor electrically connected to the upper head 10.
C), and 70 is a lower surface side FPC of the strip-shaped conductor electrically connected to the lower surface head 20. Reference numeral 80 denotes an FDD frame, reference numeral 90 denotes a board on which electronic components constituting the FDD are mounted, and reference numeral 91 denotes a connector for connecting both the upper surface side FPC 60 and the lower surface side FPC 70.

FIG. 10 shows an upper surface head 10 and an upper surface side F.
FIG. 10 is a configuration diagram showing a connection state with the PC 60, and FIG.
10A is a front view, and FIG. 10B is a bottom view. In the drawing, reference numeral 11 denotes an upper surface gimbal, 11a denotes an upper surface gimbal outer peripheral side notch portion, 11b denotes an upper surface side gimbal outer peripheral side stress absorbing portion, 12a denotes an upper surface side gimbal inner peripheral side notch portion, 12a
b is an inner circumferential side stress absorbing portion on the upper surface side gimbal. Also, 6
2 is an upper surface side FPC connection portion for connecting to the connector 91;
63 is the upper side FP when the upper side FPC 60 is bent
This is a C-folded portion. In addition, these upper side heads 10,
The upper surface side gimbal 11 and the upper surface side FPC 60 are connected in advance. FIGS. 11A and 11B are configuration diagrams showing a mounting state of the arm 40 and the upper head 10, and FIG. 11A is a side view and FIG. 11B is a bottom view. In the figure, reference numeral 41 denotes an arm-side adhesive groove for injecting an adhesive when the upper surface-side gimbal 11 is bonded to the arm 40; 61, an upper surface-side FPC fixing portion for fixing the upper surface-side FPC 60 to the arm 40; Then, the upper surface side FPC 60 and the arm 40 are fixed.

FIG. 12 shows a lower surface head 20 and a lower surface side F.
FIG. 12 is a configuration diagram showing a connection state with the PC 70, and FIG.
12A is a front view, and FIG. 12B is a bottom view. In the drawing, 21 is a lower surface side gimbal, 21a is a lower surface side gimbal outer peripheral side notch portion, 21b is a lower surface side gimbal outer peripheral side stress absorbing portion, 22a is a lower surface side gimbal inner peripheral side notch portion, 22
b is a lower surface side gimbal inner peripheral side stress absorbing portion. Also, 7
2 is a lower surface side FPC connection portion for connecting to the connector 91,
73 is the lower side FP when the lower side FPC 70 is bent
This is a C-folded portion. In addition, these lower side heads 20,
The lower surface side gimbal 21 and the lower surface side FPC 70 are connected in advance. FIGS. 13A and 13B are configuration diagrams showing a mounting state of the carriage 30 and the lower head 20. FIG. 13A is a top view, FIG. 13B is a side view, and FIG. FIG. In the figure, 31 is an arm-side adhesive groove for injecting an adhesive when the lower surface-side gimbal 21 is bonded to the carriage 30, and 32 is a folded upper surface-side FPC 60 and lower surface-side FPC
FPC insertion groove for inserting PC70, 71 is FPC on lower side
A lower surface side FPC fixing portion for fixing the 70 to the carriage 30, for example, the lower surface side FPC 70 and the carriage 30 are fixed with a double-sided tape or the like.

Next, the procedure for assembling the head will be described. First, an adhesive is injected into the arm-side bonding groove 41 of the arm 40, and the upper surface-side gimbal 11 is bonded to the arm 40 with the adhesive. In this case, the worker adheres while aligning the arm 40 with the upper head 10 connected to the upper gimbal 11 from the direction of arrow A in FIG. In addition, since this alignment requires fine adjustment, the operator can use a microscope or the like to, for example, use the top side head 10.
The position (not shown) is enlarged.

Next, the upper surface side FPC bent portion 63 is folded in a valley so that the wide surface of the upper surface side FPC 60 is perpendicular to the reading surface of the upper surface side head 10 as shown in FIG. Top side FP by FPC fixing part 61
C60 is fixed to the arm 40. Next, an adhesive is injected into the carriage-side adhesive groove 31 of the carriage 30 shown in FIG. 13A, and the lower surface side gimbal 21 is adhered to the carriage 30 with the adhesive. In this case, as in the above case,
An operator enlarges the alignment position (not shown) of the lower head 20 using a microscope or the like, and bonds the lower head 20 and the carriage 30 while performing alignment. Next, the lower surface side FPC bent portion 73 is formed into a valley fold, and the lower surface side FPC is bent.
The wide surface of the PC 70 is perpendicular to the reading surface of the lower head 10 as shown in FIG. 12B, and the lower FPC 70 is fixed to the carriage 30 by the lower FPC fixing unit 71.

Next, the carriage 30 is mounted on the head driving means 55 previously mounted on the frame 80, the arm 40 is mounted on the carriage 30, and the holder 50 is screwed and fixed. In this case, the vertically bent upper FPC 60 and lower FPC 70 are inserted into the FPC insertion groove 32 shown in FIG. 13C and fixed. Next, the upper surface side FPC 60 and the lower surface side FPC 70 are routed, and the upper surface side FPC connection portion 62 and the lower surface side FPC
Each of the connecting portions 72 is connected to the connector 91 provided on the substrate 90 fixed to the surface of the frame 80, and the mounting operation is completed.

The upper side FPC 60 and the lower side FPC
70 has a length corresponding to the moving distance of the carriage 30 when the carriage 30 performs a seek operation, and the connector 91 is arranged at a position avoiding the seek range of the carriage 30 and the retreating direction. Also, the upper side gimbal 1
When the FDD rotates a flexible disk (not shown, abbreviated as FD hereinafter), the lower surface side gimbal 21 and the lower surface side gimbal 21 have an effect of suppressing the FD from blurring by sandwiching the FD from both sides. . For this reason, the upper surface side gimbal 11
In FIG. 10B, as shown in FIG. 10 (b), the upper surface side gimbal outer peripheral side notch portion 11a formed by the notch of the upper surface side gimbal outer peripheral side notch portion 11b and the upper surface side gimbal inner peripheral side notch portion 12a have a notch. The formed upper surface side gimbal inner peripheral side stress absorbing portion 12b has a shape that bends in accordance with the movement of the FD. Similarly, the lower surface side gimbal 21
In FIG. 12B, as shown in FIG. 12 (b), the lower surface side gimbal outer peripheral side notch portion 21a formed by the lower surface side gimbal outer peripheral side notch portion 21a and the lower surface side gimbal inner peripheral side notch portion 22a have notches. The formed lower surface side gimbal inner peripheral side stress absorbing portion 22b has a shape that bends in accordance with the deviation of the FD.

[0009]

The conventional FDD is configured as described above, and has the following problems. (1) For example, when bonding the upper surface side gimbal 11 to the arm 40, the bonding operation is performed from the direction of arrow A in FIG. For this reason, the portion of the upper surface side FPC 60 protruding from the arm 40 contacts, for example, the hand of an operator, and
60, a force is applied to the upper surface side gimbal outer peripheral side stress absorbing portion 1
1b and the lower surface side gimbal outer peripheral side stress absorbing portion 21b bends to shift the alignment position of the upper surface head 10, so that
This has deteriorated the workability and accuracy of positioning. Also, when bonding the lower surface side gimbal 21 to the carriage 30,
A problem similar to the above occurred, and the workability and accuracy of positioning were deteriorated. (2) In the conventional configuration shown in FIG. 9, when the upper surface side FPC 60 and the lower surface side FPC 70 are pulled out, the upper surface side FPC bent portion 63 and the lower surface side FPC bent portion 73 are vertically folded with valley folds, and further vertically. Since the operation of inserting the upper surface side FPC 60 and the lower surface side FPC 70 into the FPC insertion groove 32 is required, the operation efficiency is poor. (3) Since the connector 91 is used to connect the upper surface side FPC 60 and the lower surface side FPC 70 to the substrate 90,
The entire thickness of the FDD was increased by the thickness of the connector 91.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. A first object of the present invention is to provide a structure in which an FPC does not touch an operator's hand when a gimbal is bonded to an arm or a carriage. F with improved workability and accuracy
DD is provided. A second object is to provide an FDD with improved workability when connecting an FPC drawn from a carriage or an arm to a substrate.

[0011]

[0012]

[0013]

[0014]

According to the present invention, there is provided a flexible disk drive comprising: a head for reading data recorded on a disk; a head supporting means for adhering to a gimbal and supporting the head via the gimbal; A head driving means for driving the head supporting means along a disk surface, a frame for supporting the head driving means, and a substrate having one surface opposed to and fixed to the back surface of the frame and a connection portion provided on the other surface If, one end connected to said head, said head support means of the frame and a band-shaped body connecting said connection end and the other through the through hole which is disposed in a direction of retracting from the disc, the connection The part is disposed on the side of the head supporting means from the insertion hole.

[0015] The flexible disk apparatus according to the next invention is the other end of the band-shaped member used to connect the solder connection portion of the substrate.

Further, a flexible disk device according to the next invention is provided on each of the front and back surfaces of the disk, and a pair of heads for reading data recorded on the disk, and a head supporting means for supporting the pair of heads A head driving unit that drives the head supporting unit along the disk surface, a frame that supports the head driving unit, a surface that is fixed to the back surface of the frame so as to face one side, and a pair of connecting portions that are connected to the other surface. And one end of each is connected to each of the pair of heads, and each of the pair of connection portions is inserted through an insertion hole in which the head support means of the frame is retracted from the disk. and a pair of belt-shaped member that connects the other end, the position of each of the pair of connecting portions, unexpected cover the connection portion where one of the pair of belt-shaped body is connected to the other In which were placed on location.

Furthermore, the flexible disk apparatus according to the next invention, the strip-shaped body, in which the radius of curvature is used a band-shaped body which repulsive force is less 6gf the case of 5 mm.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing the configuration of an FDD according to the present invention, in which the same reference numerals as those in FIG. 9 denote the same or corresponding parts, and a description thereof will be omitted. In the figure, 100
Is an upper surface side second FPC to be solder-connected to an upper surface side first FPC 120 described later, and 110 is a lower surface side first FPC 13 to be described later.
0 is the lower surface side second FPC to be connected by soldering. Also, 80
a is an FDD frame, and is a frame 80 shown in FIG.
Are the upper second FPC 100 and the lower second FPC
The difference is that a frame insertion hole 81 for inserting the 110 is provided. Reference numeral 90a denotes a substrate, which is different from the substrate 90 shown in FIG. 9 in that the substrate 90a is fixed to the back surface of the frame 80a, a substrate insertion hole 92 through which the upper second FPC 100 and the lower second FPC 110 are inserted is provided, and Instead of the connector 91 shown in FIG. 9, a board first connection portion 93 and a board second connection portion 94 which are connected to each of the upper surface side second FPC 100 and the lower surface side second FPC 110 shown in FIG. Are different.

FIG. 2 is a structural view showing a state where the arm 40 and the upper head 10 shown in FIG. 1 are mounted.
FIG. 2A is a side view, and FIG. 2B is a bottom view. In the figure, the same reference numerals as those in FIG. 11A or 11B denote the same or corresponding parts, and a description thereof will be omitted. In the figure, reference numeral 120 denotes an upper first FPC, and 121 denotes an upper first FPC fixing portion for fixing the upper first FPC 120 to the arm 40. The upper first FPC 120 and the arm 40 are fixed to each other by, for example, a double-sided tape. Reference numeral 122 denotes an upper surface side second FP.
This is the upper surface side first FPC connection portion that performs solder connection with C100. The upper head 10 and the upper gimbal 1
1 and the upper surface side first FPC 120 are connected in advance. FIG. 3 shows the first FPC 120 on the upper surface side.
FIG. 3A is a side view, and FIG. 3B is a bottom view, showing a state in which the second FPC 100 and the upper side second FPC 100 are connected by soldering. In the figure, reference numeral 101 denotes an upper surface side second FPC first connection portion which is connected to the upper surface side first FPC connection portion 122 by soldering;
Reference numeral 102 denotes a substrate first connection portion 93 shown in FIG.
And a second connection portion on the upper surface side which is connected to the second FPC by soldering.

FIG. 4 is a structural view showing a mounting state of the carriage 30 and the lower surface head 20 shown in FIG.
FIG. 4A is a bottom view, and FIG. 4B is a side view, in which the same reference numerals as those in FIG. 13A or FIG.
Or, a corresponding portion is shown and the description is omitted. In the figure, 13
Reference numeral 0 denotes a lower surface side first FPC, and 131 denotes a carriage 30
A lower surface side first FPC fixing portion that adheres and fixes the lower surface side first FPC 130 to the lower surface side first FPC 130 and the carriage 30 with, for example, a double-sided tape or the like. Also,
Reference numeral 132 denotes a lower surface side first FPC connection portion which is connected to the lower surface side second FPC 110 by soldering. Note that these lower side heads 2
0, lower surface side gimbal 21, and lower surface side first FPC 130
Use what is connected in advance. FIGS. 5A and 5B are configuration diagrams showing a state in which the lower first FPC 130 and the lower second FPC 110 are connected by soldering. FIG. 5A is a top view, and FIG. 5B is a side view. In the drawing, reference numeral 111 denotes a lower surface side second FPC first connection portion which is connected to the lower surface side first FPC connection portion 132 by soldering;
This is the second connection part.

FIG. 6 is an explanatory view for explaining a state in which the upper second FPC 100 and the lower second FPC 110 are connected to the substrate 90a. FIG. 6A is a top view, and FIG.
6B is a side view, FIG. 6C is a bottom view, and FIG. 6D is a bottom view of another example different from FIG. 6C. 6 (a) and 6 (b), the upper second FPC 100 and the lower second
In order to make it easier to see the state with the FPC 110, the arm 40,
The illustration of the holder 50 and the head driving means 55 is omitted. In the drawing, reference numeral 93 denotes a substrate first connection portion that is connected to the upper surface side second FPC second connection portion 102 by soldering, and reference numeral 94 denotes a substrate second connection portion that is connected to the lower surface side second FPC second connection portion 112 by soldering.

Next, the operation of attaching the carriage 30 and the arm 40 to the head driving means 55 attached to the frame 80a will be described. First, the arm 40
Is similar to the related art in that an adhesive is inserted into the arm-side adhesive groove 41 and the upper surface-side gimbal 11 is adhered to the arm 40 with the adhesive. However, since the length of the first FPC 120 on the upper surface side in the configuration of FIG. 2B is short enough not to protrude from the driving direction of the arm 40, it does not come into contact with, for example, a hand of an operator. For this reason, the upper surface side gimbal 11
Since the force is not carelessly applied to the arm 40, the positioning position of the upper surface head 10 can be accurately adhered to the arm 40 without shifting, thereby improving the workability and accuracy of the positioning.

Next, an adhesive is injected into the carriage-side adhesive groove 31 of the carriage 30, and the lower surface-side gimbal 21 is bonded to the carriage 30 with the adhesive.
Since the length of the lower surface side first FPC 130 is short enough not to protrude from the driving direction of the carriage 30 as in the case described above, it does not come into contact with, for example, an operator's hand. For this reason, a force is not carelessly applied to the lower surface side gimbal 21, and the positioning position of the lower surface head 20 can be accurately adhered to the carriage 30 without shifting, thereby improving workability and accuracy of positioning.

Next, after the arm 40 and the upper surface side first FPC 120 are fixed by the upper surface side first FPC fixing portion 121, the upper surface side first FPC connecting portion 122 and the upper surface side second FPC 120 are fixed.
The first connection part 101 is connected by soldering. Similarly, after fixing the carriage 30 and the lower surface side first FPC 120 by the lower surface side first FPC fixing portion 131, the lower surface side first FPC connection portion 132 and the lower surface side second FPC first connection portion 111 are soldered. Next, the carriage 30 is attached to the head driving means 55 attached to the frame 80a, the arm 40 is mounted on the carriage 30, and the holder 50 is fixed with screws.

Next, the upper surface side second FPC second connection portion 102
The operation of soldering the first FPC second connection portion 112 to the first connection portion 93 and the second FPC second connection portion 112 to the second connection portion 94 will be described with reference to FIG. Note that the substrate 90 is mounted on the frame 80a.
When attaching a, as shown in FIG. 6A or 6B, the frame insertion hole 81 and the substrate insertion hole 92 are connected so as to be attached. Further, as shown in FIG. 6C, the substrate first connection portion 93 and the substrate first connection portion 94 are provided on the back surface side of the substrate 90a on the carriage 30 side of the substrate insertion hole 92. For this reason, the upper surface side first
Upper surface side second FPC 100 connected to FPC 120 and lower surface side second FPC 1 connected to lower surface first FPC 130
Reference numeral 10 denotes each of the carriages 3 as shown in FIG.
0 is inserted into the frame insertion hole 81 and the substrate insertion hole 92 provided in the retreating direction, pulled out and bent, and the substrate 90a
Are connected to the substrate first connection portion 93 and the substrate second connection portion 94 provided on the back side of the substrate.

Thus, the thickness of the FDD in the retreating direction of the carriage 30 can be reduced, and the FDD can be downsized. Further, the conventional upper surface side FPC 60 and lower surface side FP
The bending operation necessary for attaching the C70 to the connector 91 and the insertion operation of inserting the upper surface side FPC 60 and the lower surface side FPC 70 into the FPC insertion groove 32 become unnecessary, and the work efficiency is improved. Further, at the time of connection, the connector 91 shown in FIG. 9 is not used, and the connection is made by soldering, so that it is not necessary to consider the thickness of the connector 91,
The thickness of the FDD can be reduced accordingly.

The first connecting portion 93 of the substrate and the second connecting portion of the substrate
The position of the connecting portion 94 may be changed as shown in FIG. 6D instead of FIG. 6C. The position of the second board connecting portion 94 shown in FIG. 6D is located at a position where the upper surface side second FPC 100 is not hidden by the upper surface side second FPC 100 even when the upper surface side second FPC 100 and the board first connecting portion 93 are connected. Thereby, the first substrate
A soldering error in the case of the solder connection between the connection portion 93 and the upper surface side second FPC 100 and the case of the solder connection between the substrate second connection portion 94 and the lower surface side second FPC 110 can be easily confirmed, and the soldering operation becomes easy.

In the FDD configured as described above, the upper first FPC 120 or the lower first FPC 13
0 is the arm 40 or the carriage 30 in the seek direction.
The upper surface side gimbal 11
0, or the lower surface side gimbal 21 is attached to the carriage 30
In the case of bonding to, for example, it does not come into contact with an operator's hand. For this reason, no force is applied carelessly to the upper surface gimbal 11 or the lower surface gimbal 21, and the upper surface head 10 or the lower surface head 20 can be adhered to the arm 40 or the carriage 30 without deviation of the alignment position. Performance and accuracy are improved. Further, the substrate 90a is fixed to the back surface of the frame 80a, and the upper surface side second FPC 100 and the lower surface side second FPC 110 are inserted through the frame side insertion holes 81 and the substrate side insertion holes 92, respectively. Since it was connected to each of the first connection portion 93 and the substrate second connection portion 94,
The thickness of the FDD in the retreating direction of the disk can be reduced, and the upper second FPC 100 and the lower second FPC 1
This eliminates the need for the bending operation for the work 10, thereby improving work efficiency. Further, since the connection between the FPC and the substrate is made by soldering, the number of components can be reduced and the thickness of the FDD can be reduced. Furthermore, since the board first connection portion 93 and the board second connection portion 94 are arranged at positions that are not hidden by either the upper surface side second FPC 100 or the lower surface side second FPC 110, the soldering operation is facilitated.

Embodiment 2 Here, a mode in which a flexible flat cable (hereinafter abbreviated as FFC) is used instead of the FPC used as the upper surface side second FPC 100 and the lower surface side second FPC 110 shown in FIG. 1 will be described. In general, FFCs have the following advantages: solderability is better than FPC.・ It is cheaper than FPC. -Standardized members, easily available. It has excellent characteristics.

FIG. 7 shows an example of F at room temperature of 23 ° C.
FIG. 4 is an explanatory diagram illustrating a curvature of FC and a repulsive force applied to a carriage 30 according to the curvature. In the drawing, a curve A is an FPC used for the lower surface side second FPC 110 in the first embodiment, a curve B is a commercially available FFC including a conductor and an insulating film having a total thickness of 0.1 mm, and a curve C is a conductor and an insulator. The case of a commercially available FFC having a total thickness of 0.2 mm including a film is shown. FIG. 8 is an explanatory view for explaining the driving operation of the carriage 30. In the drawing, reference numeral 100a denotes an upper side FFC, 110 used in place of the upper side FPC 100.
a is the lower side FF used in place of the lower side FPC110
C. L1 denotes a first dimension indicating a dimension from the board first connection portion 93 or the board second connection portion 94 to the board insertion hole 92.
Dimension, L2 is a second dimension indicating the driving range of the carriage 30, L3 is a third dimension indicating the dimension from the substrate 90a to the upper surface of the carriage 30, and L4 is the substrate 90a and the carriage 30.
Is a fourth dimension indicating a dimension up to the lower surface of the third embodiment.

In the FDD having the structure shown in FIG.
1 = about 7 mm, second dimension L2 = about 15 mm, third dimension L
3 = about 7 mm, and the fourth dimension L4 = about 1.4 mm. In addition, the upper side first FFC 100a and the lower side first FFC 1
When the carriage 30 seeks the outermost track (not shown) and the innermost track (not shown) of the FD as shown in FIG. Upper side first FFC 100a and lower side first FFC 100a
The FFC 110a has the frame insertion hole 81 and the substrate insertion hole 9
A suitable length is set so as not to contact any of the two. Under the above conditions, the carriage 30 is
Top side first FFC when seeking the innermost track of
100a and the lower surface side first FFC 110a have a curvature of 5 mm.
Becomes When the head driving means 55 drives the carriage 30, the driving is performed by pressing a needle (not shown) attached to the carriage 30 against the rotating lead screw 56.
0a and the repulsive force from the lower surface side first FFC 110a have a function of further increasing the pressing force for pressing the needle against the lead screw 56. When the repulsive force is large, the repulsive force between the lead screw 56 and the needle Since the frictional force increases, the carriage 30 does not drive well. For this reason, it is desirable that the repulsive force of the upper surface side first FFC 100a and the lower surface side first FFC 110a to the carriage 30 in this embodiment be 6 gf or less.

Referring to FIG. 7, the curvature is 5 mm and the repulsive force is 6
gf or less is satisfied when the total thickness is 0.1
mm FFC. This FFC is now commercially available and easily available. That is, the second FP on the upper surface side
Since an FFC with less adverse effect on the carriage 30 can be easily obtained as the C100a and the lower-surface-side second FPC 110a, solderability is improved as compared with the case where an FPC is used, so that work efficiency is improved and an inexpensive FDD can be obtained.

[0033]

[0034]

[0035]

[0036]

As described above , according to the present invention, the flexible disk drive has one surface connected to the back surface of the frame, one surface of which is fixed to the head, and one end connected to the head. and the head support means frame and a belt-shaped member for connecting the connecting portion and the other end through the through hole which is disposed in a direction of receding from the disk, the connecting portion to said head support means side from the insertion hole Since the FDD is disposed, the thickness of the FDD in the retreating direction from the disk can be reduced, and the size can be reduced.

[0037] According to the next invention, a flexible disk device, the connecting the other end of the connection portion of the substrate of the strip-shaped body of solder, together with the connector can be reduced number of components by not using a connector component The effect is that the thickness of the film can be reduced.

According to another aspect of the present invention, a flexible disk drive comprises: a substrate having one surface fixed to the back surface of a frame and a pair of connecting portions provided on the other surface; And a pair of bands connecting the other end to each of the pair of connection portions through an insertion hole provided in a direction in which the head support means of the frame is retracted from the disk.
A-shaped body, the position of each of the pair of connecting portions, so was placed in a position which is not covered with the connecting portion one of the pair of belt-shaped member connects the other, readily confirmed soldered error There is an effect.

[0039] Furthermore, according to the next invention, a flexible disk device, the strip-shaped body, since the radius of curvature is used a band-shaped body which repulsive force is less 6gf in the case of 5 mm, adverse effects on the carriage And the workability is improved because of good solderability.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of a flexible disk device according to Embodiment 1 of the present invention.

FIGS. 2A and 2B are configuration diagrams showing an attached state of an arm and an upper head in the first embodiment, wherein FIG. 2A is a side view and FIG. 2B is a bottom view.

FIGS. 3A and 3B are configuration diagrams illustrating a state in which the first upper surface side FPC and the second upper surface side FPC are connected by soldering in the first embodiment; FIG. 3A is a side view, and FIG. is there.

4A and 4B are configuration diagrams illustrating a mounting state of a carriage and a lower surface head in the first embodiment, where FIG. 4A is a top view and FIG. 4B is a side view.

FIGS. 5A and 5B are configuration diagrams showing a state in which the first lower surface side FPC and the second lower surface side FPC are connected by soldering in the first embodiment; FIG. 5A is a top view and FIG. 5B is a side view; is there.

FIGS. 6A and 6B are explanatory diagrams illustrating a state in which the upper surface side second FPC and the lower surface side second FPC are connected by soldering to a substrate in the first embodiment. FIG. 6A is a top view, and FIG. FIG. 6C is a side view, and FIG.

FIG. 7 is an explanatory diagram illustrating a repulsive force corresponding to the curvature of the FFC when the room temperature is 23 ° C.

FIG. 8 is an explanatory diagram illustrating a driving operation of the carriage.

FIG. 9 is an exploded perspective view showing the configuration of a conventional flexible disk device.

10A and 10B are configuration diagrams showing a connection state between an upper head and an upper FPC in the related art, where FIG. 10A is a front view and FIG. 10B is a bottom view.

FIG. 11 is a configuration diagram showing a state in which an arm and an upper head are conventionally mounted, and FIG. 11 (a) is a side view,
FIG. 11B is a bottom view.

12A and 12B are configuration diagrams illustrating a connection state between a lower surface head and a lower surface side FPC in the related art, in which FIG. 12A is a front view and FIG. 12B is a bottom view.

13A and 13B are configuration diagrams showing a mounting state of a carriage and a lower surface head in the related art, where FIG. 13A is a top view, FIG. 13B is a side view, and FIG.
(A) It is AA sectional drawing.

[Explanation of symbols]

 80a frame 81 frame insertion hole 90a substrate 92 substrate insertion hole 93 substrate first connection portion 94 substrate second connection portion 100 upper surface side second FPC 100a upper surface side second FFC 101 upper surface side second FPC first connection portion 102 upper surface side second FPC second Connection portion 110 Lower surface side second FPC 110a Lower surface side second FFC 111 Lower surface side second FPC first connection portion 112 Lower surface side second FPC second connection portion 120 Upper surface side first FPC 121 Upper surface side first FPC fixing portion 122 Upper surface side first FPC connection portion 130 Lower first FPC 131 Lower first FPC fixing part 132 Lower first FPC connection part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-262541 (JP, A) JP-A-9-167453 (JP, A) JP-A-6-243601 (JP, A) JP-A-2- 236887 (JP, A) Fully open sho 59-125754 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 21/02 G11B 5/60 G11B 33/12

Claims (4)

(57) [Claims] 1. A head for reading data recorded on a disk, a head supporting means for adhering to a gimbal and supporting the head via the gimbal, and a head for driving the head supporting means along the disk surface A driving unit, a frame supporting the head driving unit, a substrate having one surface opposed to and fixed to the back surface of the frame, and a connection portion provided on the other surface, and one end connected to the head, and a belt-shaped body in which the head support means connecting said connection end and the other through the through hole which is disposed in a direction of retracting from the disc, distribution to the head supporting unit side the connecting portion from the insertion hole A flexible disk device characterized by being provided. 2. A band-shaped member and the other end of the flexible disk drive as in claim 1, wherein said connecting solder and the connecting portion of the substrate. 3. A pair of heads provided on each of a front surface and a back surface of a disk for reading data recorded on the disk, head support means for supporting the pair of heads, and the head along the disk surface A head driving means for driving the supporting means, a frame for supporting the head driving means, a substrate having one surface opposed to and fixed to the back surface of the frame, and a pair of connecting portions provided on the other surface; was connected to each of the pair of heads, a pair of strip said head support means of the frame to connect the other end to each of the pair of connecting portions through the insertion holes arranged in a direction of retracting from the disc-shaped and a body, a flexible di, characterized in that the position of each of the pair of connecting portions, and disposed at a position which is not covered with the connecting portion one of the pair of belt-shaped body is connected to the other Disk device. The 4. A band-shaped body, to claim paragraphs 1 through 3 wherein, wherein the radius of curvature using a band-shaped body which repulsive force is less 6gf in the case of 5mm The flexible disk device according to the above.