JP2519898Y2 - Floppy disk drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a floppy disk drive, and more particularly to a retracting mechanism for an upper arm.

[Conventional technology]

FIG. 8 and FIG. 9 are cross-sectional views of essential parts of a conventional floppy disk drive device. The conventional technique will be described below with reference to these drawings.

A floppy disk 1 for magnetically recording information is rotatably housed in a cartridge 2 made of hard plastic. 10 is a frame, 20
Is a slide plate, and is supported by the frame 10 so as to be slidable in the same direction as the attachment / detachment of the cartridge 2. Reference numeral 25 is a carriage operating spring, and 30 is a carrier which is configured so that the cartridge 2 can be attached and detached. Reference numerals 31 and 45 respectively denote a guide pin and an arm receiver provided on the carrier, 40 is a carriage, 41 is a lower arm having one end fixed to the carriage 40 and the lower head 43 being carried at the other end, and 42 is an arm spring 46 at one end. Is an upper arm supported by the carriage 40 and carrying an upper head 44 at the other end, and 60 is a guide rail.

The carrier 30 engages a guide pin 31 with a vertical groove (not shown) provided in the frame 10 so that the cartridge 2 can be detached and attached, and the upper and lower heads 44 and 43 hold the floppy disk 1 therebetween. It is configured to be vertically movable up and down with respect to a drive position where information is recorded or reproduced. The cartridge 2 is attached and detached from the direction perpendicular to the drawing.

The slide plate 20 is provided with a cam groove (not shown) that engages with the pin 31, and the sliding movement thereof causes the carrier 30 to move.
Move up and down.

The carriage 40 is a guide rail provided on the frame 10.
It is configured so as to be movable in the radial direction of the floppy disk 1 along 60. And again, this guide rail 60
The lower arm 41 and the lower head 43 can be contacted with and separated from the floppy disk 1.

FIG. 8 shows the carrier 30 in the attachment / detachment position, and FIG. 9 shows the carrier 30 in the drive position.

In FIG. 8, the slide plate 20 has an L-shaped cross section, has the cam groove in the vertical portion 20a, has an opening in the horizontal portion 20b, and a carriage operating spring 25 is provided in the vicinity thereof with the opening. It is provided between the carriage 40. In addition, when the convex portion 10a is formed on the bottom of the frame 10 and the slide plate 20 is in a position to support the carrier 30 at the attachment / detachment position,
The carriage operating spring 2 passes through the opening of the horizontal portion 20b.
Push 5 up. Therefore, the carriage 40 rotates clockwise around the guide rail 60 in the drawing, and separates the lower arm 41 and the lower head 43 from the floppy disk 1. Also, the upper arm 42 also rotates clockwise in the same manner, but the arm receiver 45 provided on the carrier 30 pushes the upper arm 42 upward as the carrier 30 moves upward, so that the arm spring 46 is deformed and the upper arm 42 is deformed. 42 is the upper head 44
Is separated from the floppy disk 1. in this way,
When the carrier 30 is in the attachment / detachment position, the upper and lower heads 44,
43 are separated from each other to form a predetermined gap, and the cartridge 2
It is easy to put on and take off.

As shown in FIG. 9, when the carrier 30 is at the driving position, the carriage operating spring 25 and the convex portion 10a do not overlap each other,
Since the carriage operating spring 25 does not push up the carriage 40, the upper and lower heads 44 and 43 hold the floppy disk 1 at a predetermined position, and information is recorded or reproduced.

[Problems to be solved by the device]

However, in the above-mentioned conventional technique, the moving amount in the retracting operation of the upper head 44 and the lower head 43 at the attachment / detachment position, that is, the distance between the upper and lower heads cannot be adjusted after the device is assembled, so that the processing accuracy of the parts is high. Considering the assembling accuracy, it was necessary to have a sufficient margin, and the thickness of the device had to be increased more than necessary.

An object of the present invention is to enable adjustment of the distance between the upper and lower heads at the attachment / detachment position even after the device is assembled, thereby reducing the size margin in the thickness direction of the device and reducing the thickness of the device. To provide.

[Means for solving the problem]

A carrier capable of moving up and down between an upper loading / unloading position at which a cartridge containing a floppy disk can be loaded / unloaded and a lower driving position at which information is recorded / reproduced on / from the floppy disk, and a projecting portion abutting on the carrier are provided. A floppy disk drive having an upper arm carrying an upper head, the contact portion is lifted by the carrier when the carrier moves from the drive position to the attachment / detachment position, and the upper head is moved to the floppy disk. In the floppy disk drive device configured to be separated from the above, the separation distance between the upper head and the floppy disk at the retracted position can be adjusted by adjusting the protruding amount of the protruding portion. .

〔Example〕

An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view of a main part of a floppy disk drive device according to the present invention. FIG. 2 is a plan view of an essential part of the floppy disk drive device shown in FIG. 3 and 4 are the first
FIG. 3 is a cross-sectional view of the main parts of the floppy disk drive device shown in FIGS. 2 and 3, FIG. 3 is a cross-sectional view of the main parts when a cartridge is attached and detached, and FIG. FIG. 5 is a plan view of the carrier shown in FIG. FIG. 6 is a plan view of the slide plate shown in FIG. FIG. 7 is a sectional view taken along the line AA shown in FIG.

In FIGS. 1 and 2, reference numeral 10 is a frame, a front surface 13 has a front surface 13 having an insertion / ejection opening for inserting or ejecting the cartridge 2, and a side surface thereof is a groove formed vertically. A groove cam 11 is provided. A slide plate 20 is slidable in the direction in which the cartridge 2 is inserted or ejected, and a slide plate spring 23 always keeps the front side.
It is biased in 13 directions. Also, an eject button 26 is provided on the front side 13 so that the operator can slide the slide plate with his finger.
It is possible to push 20 in the insertion direction of the cartridge 2. Reference numeral 14 is a lock lever provided on the frame 10, and locks the slide plate 20 in the pushed-in position.
When the cartridge 2 is inserted, the lock is released. On the side surface of the slide plate 20, there is provided a groove cam 21 which is a groove of a horizontal portion and an inclined portion. Reference numeral 30 denotes a carrier which holds the cartridge 2 and is vertically movable along the groove cam 11 between an upper detaching position and a lower driving position. Guide pins 31, 32, and 33 are provided on the side surface of the carrier 30, and engage with the groove cams 21 and 11. A carriage 40 supports the upper arm 42 and the lower arm 41 so as to face each other with the carrier 30 interposed therebetween. Reference numeral 61 denotes a step motor, which enables the carriage 40 to reciprocate in the radial direction of the floppy disk along the guide rail 60 by the rack-pinion mechanism. Upper arm
42 is rotatably fixed to the carriage 40 by a thin and flexible leaf spring 50. Then, the coil spring 49 constantly urges downward.

Next, the operation will be described. When the cartridge 2 is inserted from the front 13, the lock lever 14 moves the slide plate 20.
Unlock. Slide plate 20 is slide plate spring 23
Slides in the front 13 direction. At this time, the guide pin 31 provided on the carrier 30 moves along the inclined portion of the groove cam 21, and the guide pin 32 follows the groove cam 21, so that the carrier 30 holds the cartridge 2 substantially vertically. It descends and is held in the lower drive position. When the carrier 30 is in the driving device, the upper and lower heads hold the floppy disk so that information can be recorded or reproduced. When recording or reproducing of information on the floppy disk is completed and the operator pushes the eject button 26 to remove the cartridge 2, the slide plate 20 slides on the side opposite to the front side 13 and the groove cam 21 acts to cause the carrier to move. Push up 30 upwards Groove cam 21
It is supported at the attachment / detachment position by the horizontal part of Since the lock lever 14 locks the slide plate 20 in this state, the cartridge 2
The carrier 30 continues to be held in the attachment / detachment position unless is inserted and the lock is released.

The upper head and the lower head retreat between the position for holding the floppy disk and the retreat position at a predetermined interval in conjunction with the raising / lowering operation of the carrier 30. The mechanism for the retracting operation of the upper and lower heads will be described in more detail with reference to FIGS. 3 and 4.

The carriage 40 has a U-shaped cross section with the carrier 30 interposed therebetween, and is provided on the guide rail 60 so as to be slidable and swingable. A lower arm 41 carrying a lower head 43 is provided on the opposite side of the carriage 40 with the guide rail 60 interposed therebetween, and the tip end thereof is supported by a balance spring 48. The balance spring 48 is configured to support the lower arm 41 in a horizontal state in a driven state. The upper arm 42 carries an upper head 44 arranged to face the lower head 43, and is rotatably supported by the carriage 40. 25 is a carriage operating spring, which is fixed to the slide plate 20, 47 is a screw,
It engages with a through screw hole provided in the upper arm 42. 34
Is a metal sheet and is attached to the upper surface of the carrier 30 by adhesion at a position facing the screw 47. FIG. 5 shows a plan view of the carrier 30, in which the metal sheet 34 is fixed by adhesion. The screw 47 and the metal sheet 34 are the most characteristic features of the present invention.

As shown in FIG. 4, when the carrier 30 is in the driving position, the carriage 40 is in a horizontal state and the upper and lower heads 4 are
4 and 43 hold the floppy disk 1 to record or reproduce information.

As mentioned above, the slide plate 20 is pushed in and the carrier
When 30 is pushed up to the attachment / detachment position, the carriage operating spring 25 attached to the slide plate 20 pushes up the carriage 40 and rotates it around the guide rail 60 in the clockwise direction. Third
This state is shown in the figure. By the rotation of the carriage, the lower arm 41 causes the lower head 43 to retract to the retracted position against the balance spring 48. On the other hand, since the upper arm 42 is pushed up by the carrier 30 in which the screw 47 moves up, the upper head 44 is eventually retracted to the retracted position even though the carriage rotates downward. Screw on the top of the carrier 30
The metal sheet 34 is fixed by adhesion at a position facing the 47, abuts the screw 47, and pushes up the upper arm 42. For this reason, the coefficient of friction is much smaller than when the screw 47 directly contacts the carrier 30. In addition, the end of the screw 47 that comes into contact with the metal sheet 34 is polished into a spherical shape to further enhance this effect.

Next, the mechanism in which the carriage operating spring 25 biases the carriage 40 will be described in more detail with reference to FIGS. 6 and 7.

FIG. 6 is a plan view of the slide plate 20.
The slide plate 20 is assembled so that the rear surface side thereof is in sliding contact with the frame 10 as described above in the drawing. A carriage operating spring 25 is fixed to the front surface side by a stop pin 25b.

FIG. 7 is a sectional view taken along line AA of FIG. Carriage operating spring
25 is formed in a leaf spring shape, one end of which is fixed to a surface of the slide plate 20 on the opposite side of the frame 10 by a stop pin 25b, and the other end of which is provided with a cylindrical portion 25a. Part of the cylindrical portion 25a,
It passes through an opening provided in the slide plate 20 and abuts on the frame 10 side. When a step is formed in a portion of the frame 10 facing the carriage operating spring 25, and the slide plate 20 is in a position to support the carrier 30 at the attaching / detaching position, the carriage operating spring 25 moves in the frame as shown by the one-dot chain line in the figure. Climb to step 10 and push up carriage 40 as described above.

[Effects of the Invention] As is apparent from the above description, according to the present invention, the retracting amount of the upper head when the cartridge is attached and detached is adjusted by adjusting the protruding amount of the protruding portion provided on the upper arm. Since the adjustment can be performed even after assembling the device, it is not necessary to take an unnecessary margin due to the processing accuracy and the like, so that the device can be downsized. Further, even if the protruding amount of the protruding portion becomes small due to wear, it is not necessary to replace the parts, and the maintainability is improved. In addition, by adhering a metal sheet to the surface of the carrier that faces the protruding portion, friction and wear between them are reduced, which has the effect of improving energy saving and reliability.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an essential part of a floppy disk drive device showing an embodiment of the present invention, FIG. 2 is a plan view of the essential part of the embodiment shown in FIG. 1, and FIG. 3 is an embodiment shown in FIG. FIG. 4 is a cross-sectional view of a main part of the example when a cartridge is attached and detached, FIG. 4 is a cross-sectional view of the main part in a driving state of the apparatus of the embodiment shown in FIG. 1, and FIG. Shows a plan view of the slide plate shown in FIG. 1, and FIG. 7 shows a sectional view taken along the line AA shown in FIG. 8 and 9 show a conventional floppy disk drive device, FIG. 8 is a cross-sectional view of a main part when a cartridge is attached and detached, and FIG. 9 is a cross-sectional view of the main part in a driving state of the device. 1 ... Flexible disk, 2 ... Cartridge, 10
…… Frame, 11, 21 …… Groove cam, 14 …… Lock lever, 20 …… Slide plate, 23 …… Slide leaf spring, 25 ……
Carriage operating spring, 26 …… eject button, 30 …… carrier, 34 …… metal sheet, 40 …… carriage, 41 …… lower arm, 42 …… upper arm, 43 …… lower head, 44 …… upper head, 45 …… Arm receiver, 46 …… Arm spring, 47 …… Screw (projection part), 48 …… Balance spring, 49 …… Coil spring, 50…
… Leaf springs, 60… Guide rails, 61… Stepping motors.

Claims (2)

(57) [Scope of utility model registration request] 1. A frame (10) and a cartridge (2) accommodating a floppy disk (1) are held, and an attachment / detachment position at which the cartridge (2) can be attached / detached and information is recorded on the floppy disk (1). Alternatively, a carrier (30) capable of reciprocating between a drive position for reproduction and a slide provided slidably on the frame (10) for moving the carrier (30) from the drive position to the attachment / detachment position. A plate (20), a carriage (40) provided so as to reciprocate in the radial direction of the floppy disk (1), a lower head (43) carried at one end, and the other end supported by the carriage (40). A lower arm (41) and an upper head (44) at one end, and a protrusion (47) at the other end rotatably supported by the carriage (40) and in contact with the carrier (30). With upper arm (42) , When said carrier (30) moves to the detachable position from the driving position, the protrusion (47) said carrier (30)
In a flippy disk drive device that is lifted up by means of the upper head (44) so as to retract the upper head (44) to a retracted position separated from the floppy disk (1). The upper head (44) and the floppy disk (1) at the retracted position
A floppy disk drive device characterized in that the separation distance from and can be adjusted. 2. The floppy disk drive device according to claim 1, wherein a protective sheet (34) is attached to a portion of the carrier (30) that comes into contact with the protruding portion (47).