JP2562435Y2 - Floppy disk drive - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a floppy disk drive.

[0002]

2. Description of the Related Art As is well known, a floppy disk device (hereinafter referred to as FDD) is an information recording device capable of replacing a recording medium, and therefore, a floppy disk (hereinafter referred to as FD) is frequently inserted and ejected.

The FD 1 is housed in a protective jacket 2 as shown in FIG. 6, and a pair of read / write heads 5 and 6 (hereinafter simply referred to as heads) are inserted into access holes 3 and 4. , FD1 is read / written.

Therefore, when the FD 1 is inserted and ejected, the heads 5 and 6 need to be retracted so that the read / write heads 5 and 6 are not damaged by the jacket 2, and the interval between them must be made larger than the thickness t of the jacket 2. There is.

[0005] Usually, as shown in FIG.
Is lifted in the a direction by t / 2 or more, and the head arm 7 to which the head 5 is attached is lifted in the a direction by the thickness t or more to retreat the head.

[0006]

The retreating operation of the head described above is a direct impediment to realizing the recent demand for a thinner FDD. That is, the retreat operation is indispensable, but the escape space provided above for head-up and retreat operation is used at times other than the insertion and ejection of the FD as shown in FIG. There is no.

FIGS. 8 and 9 show an example in which the evacuation operation space is reduced and the FDD is made thinner.

This is because the circuit board 8 is cut off as shown in the drawing over a length L in which the head arm 7 with the head raised interferes with the circuit board 8 provided above in the movable range of the head carriage 9. The through hole 8a is provided.

However, according to this method, there is a drawback that the mountable area of the electronic component on the circuit board 8 is reduced.

Therefore, the present invention has an object to obtain a means for reducing this drawback.

[0011]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and cooperates with a disc ejection eject button to retract a head carriage backward before disc ejection and head-up are performed. Providing a means for moving to a position, and providing a circuit board arranged in proximity to the head carriage in a state where head-up is not performed;
An escape notch or an escape through hole is provided to prevent interference with the head that has been raised.

[0012]

According to the conventional method shown in FIGS. 8 and 9, the head arm 9 does not interfere with the circuit board 8 regardless of the position of the head carriage 9, but according to this invention, the eject button is provided. Is operated, the head carriage moves to the rear evacuation position, so that the size of the escape notch or the escape through-hole for forming an escape space for head-up provided on the circuit board 8 can be reduced. The area where components can be mounted can be increased.

[0013]

FIG. 1 shows this invention using a head carriage with a VCM.
FIG. 2 shows a first embodiment when applied to a linear motor type FDD driven by a (voice coil motor).
Is a plan view of the circuit board 8, in which a push rod 11 for pushing the head carriage 9 interlocked with the eject button 10 is provided.

According to this structure, the eject button 10
Is operated, the head carriage 9 is pushed by the pushing rod 11 and moves to the rear retract position (right side in the figure).
In this case, in association with the pressing operation of the eject button 10, the jacket 2 is lifted, the head arm 7 is lifted, and the jacket 2 is ejected by a mechanism (not shown) similar to the conventional device.

After the jacket 2 is discharged, the latch is latched by a mechanism (not shown), and the latch is not released until the jacket 2 is inserted again.

FIG. 3 shows a second embodiment in which the movable range of the head carriage 9 is larger than the pressing stroke of the eject button 10. The lever 12 is pushed between the pushing rod 11 and the head carriage 9. The desired function is realized by expanding the stroke for pushing back the head carriage 9.

FIG. 4 shows a third embodiment of the present invention, in which an electric contact is used as an eject button 10 '.

That is, the positioner actuator 14 is controlled by the eject button 10 'through the control unit 13.
And the other drive mechanism 15 (head arm lifter and disk ejector). Note that the control unit is connected to P ₀ sensor 16 may be the head carriage 9 detects whether located P _{0 (rearward} retracted position).

When the eject button 10 'is pressed, the jacket 2 is discharged according to the sequence shown in FIG.

[0020]

As described above, when the jacket 2 is inserted and ejected, the head carriage 9 is positioned at the rear evacuation position, so that the notch or the through hole 8a of the circuit board 8 can be minimized. The FDD can be made thinner without substantially reducing the area where electronic components can be mounted.

[Brief description of the drawings]

FIG. 1 is a side view of a first embodiment of the present invention.

FIG. 2 is a plan view of a circuit board according to the first embodiment.

FIG. 3 is a plan view of a second embodiment of the present invention.

FIG. 4 is a block diagram of a third embodiment of the present invention.

FIG. 5 is a flowchart showing an operation procedure of the third embodiment.

FIG. 6 is a sectional view of a floppy disk in a known jacket.

FIG. 7 is a side view showing a configuration of a main part of a conventional device.

FIG. 8 is a side view showing a main configuration of an improved conventional device.

9 is a plan view of a circuit board of the conventional device shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Floppy disk (FD) 2 Jacket 3, 4 Access hole 5, 6 Read / write head 7 Head arm 8 Circuit board 9 Head carriage 10, 10 'Eject button 11 Push rod 12 Lever 13 Control unit 14 Positioner actuator 15 Drive mechanism 16 P ₀ sensor

Claims (1)

(57) [Scope of request for utility model registration] 1. In conjunction with a disc ejection eject button, before disc ejection and head-up are performed.
, The means for moving the head carriage in the rear retracted position
The provided, and the head of state in which the head-up is not performed
Providing a circuit board arranged close to the carriage,
Floppy disk drive, wherein the circuit board, providing the relief notch or relief hole for preventing interference between the heads head-up at the rear retracted position.