JPS61190751A - Disk drive device - Google Patents

Abstract

PURPOSE:To suppress to minimum th flaw of a floppy disk, by constituting the title device so that a shutter of a disk cartridge is opened always, at the point of time that the disk cartridge is inserted between magnetic heads. CONSTITUTION:When the disk cartridge 5 is inserted in the direction of heads 14a and 14b, a switching lever 18 engaged to an engage section 8c of an operat ing member 8 retreats relatively against the cartrige 5, and by this the shutter 7 is opened in the direction C. When pushing in the cartridge 5 more from the position where the shutter 7 is completely opened, and operating member 8 reaches to a disk cartridge unit inserted between the heads 14a and 14b coping with the energization force of a spring 8b, and sets the floppy disk 11 by placing it on a turntable 16. Since the shutter 7 has been opened already at the second half of the insertion of this cartridge 5, the spacing D of the heads 14a and 14b can be narrower than the cartridge thickness. In this way, the drop speed of the head 14b can be made low, and the flawing of the disk 11 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a disk drive device that stores a disk-shaped recording medium such as a floppy disk in a hard case and performs recording and reproduction. The present invention relates to a disk drive device including an opening/closing mechanism that opens and closes a shutter of a provided magnetic head insertion port in response to insertion and removal of a disk cartridge.

[Conventional technology]

In conventional disk drive devices.

The shutter opening/closing mechanism is fixed in the cartridge insertion/extraction direction, and for example, a rotatable lever is placed at a predetermined location on the cartridge support, usually near the cartridge tip at the cartridge mounting position, and the shutter is fixed in the cartridge insertion/extraction direction. When the lever contacts or engages a part of the cartridge's shutter, and as the cartridge is pushed in, the lever rotates in the pushing direction, and as a result, the shutter moves laterally and the cartridge comes to the loading position. .

In other words, the shutter is configured to completely open when the first rotation position is reached. Therefore, as shown in FIG. 7, upper and lower recording/reproducing heads 73a are provided at the tips of the carriage 71 and the revolving body 72, respectively.

The thickness of the cartridge 73b is at least greater than that of the cartridge 74 so that the shutter 75 can be opened and closed with the cartridge 74 held between the heads 73a and 73b when mounted.
It was necessary to maintain a distance A that allows for a safe distance to prevent contact with 3a and 73b.

[Problem that the invention seeks to solve]

As described above, in a disk drive device using a conventional shutter opening/closing mechanism, both heads 73a and 73b must be kept at the above-mentioned distance A when a disk cartridge is installed. but.

If the distance A is wide, the disk surface may be damaged when the heads 73a, 73b are set on the disk surface, or unnecessary vibrations may be caused by the heads 73a, 73b contacting the disk surface.

73b, the carriage 71, the revolving body 72, etc., there is a problem.

The present invention has been made in view of the problems of the prior art, and its purpose is to provide a disk drive device with excellent disk durability and stable output by narrowing the head spacing. There is a particular thing.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a disk drive device with a shutter opening/closing mechanism including an actuating member and an actuating means so as to be movable in parallel in the direction of inserting and removing the disk cartridge. Engage the engaging part provided on the side with the shutter opening/closing lever of the disc cartridge to fully open the shutter.

Thereafter, the front end of the disk cartridge is brought into contact with the contact portion provided on the rear end side of the actuating member.

The disc cartridge is configured to be inserted between both heads with the shutter fully open against the elastic force of a biasing means that biases the actuating member toward the disc cartridge insertion/extraction port side of the disc drive device; A feature of the present invention is that the shutter opening/closing mechanism is configured to be movable in parallel according to the insertion and removal of the disk cartridge.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

1 to 6 are for explaining a disk drive device according to an embodiment of the present invention.

FIG. 1 is a plan view schematically showing a disk drive device and a disk cartridge, and FIG. 2 is a front view thereof.

FIG. 3 is a schematic diagram of the shutter mechanism, which is the main part of the present invention.
3(a) is a plan view thereof, FIG. 3(b) is a front view, FIG. 3(e) is a right side view, and FIGS. 4 and 5 are plan views showing the operation of the shutter opening/closing mechanism.

FIG. 6 is an explanatory diagram showing the relationship between the disk cartridge and the head.

In FIGS. 1 and 2, the disk drive device includes a head feeding mechanism 2 installed on a main body 1.

A head mechanism 3 that records and reproduces information on the disk, a drive mechanism 4 that rotationally drives the disk, and a support section 6 that supports the disk cartridge 5.

A shutter opening/closing mechanism 8 for opening and closing the shutter 7 of the disk cartridge 5 is provided.

The head feeding mechanism 2 uses a stepping motor 9 and transfers the rotational force of the stepping motor 9 to the carriage 1 of the head mechanism 3.
0 and transfers the carriage IO to floppy disk 1.
The drive unit 12 includes a drive unit 12 that reciprocates in the radial direction of the drive unit 1. The head device a3 includes a carriage 10, a revolving body 13 rotatably attached to the carriage 10, and magnetic heads 14a and 14b for recording and reproducing provided at the tips of the carriage 10 and the revolving body 13. , the magnetic heads 14a and 14b perform recording and reproduction while sliding on the bottom and top surfaces of the floppy disk 11, respectively.
The drive mechanism 4 includes a drive motor 15 and a turntable 16 provided on a rotating shaft.

The floppy disk 11 in the disk cartridge 5 is placed on the turntable 16 and rotated. A support part 6 for supporting the disk cartridge 5 during recording and reproduction is disposed above the drive mechanism 4. When the inserted disk cartridge 5 comes to the mounting position, the support part 6 lowers and supports the floppy disk 11. The floppy disk 1 is placed and fixed on the turntable 16.
1 is brought into contact with the magnetic head 141 on the side of the carriage 10, and at the same time, the rotating body 13 is lowered, and the magnetic head 14b at the tip of the rotating body 13 also comes into contact with the ground surface of the floppy disk 11, making it possible to record and reproduce. .

Further, on the opposite side of the support section 6 from the head mechanism 3,
As shown in FIG. 3, a shutter opening/closing mechanism 8 is provided on the side surface of the disk cartridge insertion/extraction opening 6b.

This shutter opening/closing mechanism 8 is.

It consists of an actuating member 8a that is movable along a guide groove 6a formed on the side surface of the support portion 6, and a spring 8b that urges the actuating member 8a toward the insertion/extraction opening 6b of the disk cartridge 5. One end of the spring 8b is connected to a part of the actuating member 8a, and the other end is connected to a stop member 17 provided on the front side of the main body 1.The front end side of the actuating member 8a is connected to a part of the actuating member 8a, and the other end is connected to a stop member 17 provided on the front side of the main body 1. An engaging portion 8C is formed on the 5 side surface and engages with the opening/closing lever 18 that opens and closes in conjunction with the shirt tough, and on the rear end side of the 1 actuating member 8a, the front end of the disc cartridge 5 is held after the shirt tough is released. A contact portion 8d that comes into contact is formed. The opening/closing lever 18 is connected to the shutter 7 via a roller 20 by a flexible connecting member 19, and the opening degree of the shirt tough is determined by the position of the opening/closing lever 18. s5a is a magnetic head insertion opening. .

The opening/closing operation of the shirt tough in the disk drive device configured as described above will be described below.

As shown in FIGS. 1 to 3, when the disk cartridge 5 is not inserted into the support section 6, the first actuating member 8a is operated by the action of the spring 8C on the front end B of the guide groove 6a on the side surface of the support section 6. It is located by The disk cartridge 5 is connected to the head 14a.

14b direction, the engaging portion 8c of the actuating member 8a engages with the opening/closing lever 18 of the disk cartridge 5,
When the disk cartridge 5 is further pushed in, the position of the actuating member 8a remains unchanged due to the biasing force of the spring 8b, as shown in the fourth @, and only the disk cartridge 5 moves further toward both heads 14a.

14b side, and as it is inserted, the opening/closing lever 18 that is engaged with the engaging portion 8c is inserted into the disk cartridge 5.
As the shutter 7 moves backward relative to the
open in the direction. When the shutter 7 is completely opened,
The tip of the disk cartridge 5 is just touching the actuating member 8.
As can be seen from FIG. 4, the shutter is completely opened before the disk cartridge 5 reaches the magnetic heads 14a, 14b. When the disk cartridge 5 is further pushed in from this position, the first actuating member 8a is pushed between the heads 14a and 14b along the guide groove 6a against the urging force of the spring 8b, and the disk as shown in FIG. After reaching the cartridge mounting position, the floppy disk 11 is lowered to the turntable 16 side, and the floppy disk 11 is placed and fixed on the turntable 16. In the latter half of the insertion of the disk cartridge 5, the disk cartridge 5 is inserted between both heads 14a and 14b as described above, but at this time the shutter 7 has already been opened by the action of the engaging member 8C. The distance between both heads 14a and 14b is 6th.
As shown in the figure.

It can be set narrower than the thickness of the normal disk cartridge 5. When the disk cartridge 5 is in a predetermined mounting position, the first actuating member 8a is located on the rear end E side of the guide groove 6a and is always biased toward the insertion/extraction port 6b. Therefore, when you have finished using the floppy disk 11 and want to take it out, press the separately provided eject button to eject the floppy disk 11.
When the device is operated (not shown), the rotating body 13 rises and the disk cartridge 6 also rises to the same position as when it was inserted, and the two heads 14a and 14b are separated by the above distance and are moved by the biasing force of the spring 8b. The disk cartridge 5 is retracted to the position shown in FIG. When the disk cartridge 5 is pulled out from this position, the shutter 7, which is normally biased toward the closed side, opens.

The shutter 7 is gradually closed as the opening/closing lever 18 moves relatively forward, and the shutter 7 is completely closed when the opening/closing lever I8 separates from the engaging portion 8c. Therefore, when the disk cartridge 5 is pulled out from the support 6, the shutter 7 is always closed to prevent dust from entering.

In this way, at the time when the disk car (-ridge 5) is inserted between the magnetic heads +4a and +4h.

By configuring the shutter 7 of the disk cartridge 5 to be always open, there is no need to make the gap between the two heads 14a and 14b as large as the gap A in the conventional example, so that the upper side when the disk cartridge is installed is not required. The falling speed of the head + 4h can be lowered, and both heads 14Fl, 1
4) Damage to the surface of the floppy disc 11 caused by the collision can be minimized, and damage to the magnetic heads +4a and +4h can also be prevented.

[Effects of the Invention] As is clear from the above description, according to the present invention, there is less damage to the disk, and it is possible to prevent destruction of the recording/reproducing head and unnecessary vibrations that occur when it comes into contact with the surface of the disk. Therefore, it is possible to provide a disk drive device with excellent disk durability, stable output, and fewer failures.

[Brief explanation of drawings]

1 to 6 are for explaining a disk drive device according to an embodiment of the present invention. FIG. 1 is a plan view showing an overview of the disk drive device and a disk cartridge, and FIG. The front view and FIG. 3 are schematic diagrams of the shutter mechanism, which is the main part of the present invention. FIG. 3(a) is a plan view thereof, FIG. 3(b) is a front view, and FIG. 3(c) is a right side view. 4 and 5 are plan views showing the operation of the shutter opening/closing mechanism, FIG. 6 is an explanatory diagram showing the relationship between the disk cartridge and the head, and FIG. 7RM is a plan view showing the relationship between the conventional disk cartridge and the head. FIG. 2...Head feeding mechanism, 3...Head mechanism, 4...Driving mechanism, 5...Dake cartridge, 6...Support Part, 7...
Shutter, 8... Operating member, 8b... Spring, 8c... Engaging portion, 8d... Portion portion. Floppy disk for 11..., 1B...Opening/closing lever + O 1 Figure 1...-i Gobe T3I12] Shima to bun (C) 0 74th to a

Claims (1)

[Claims] A drive mechanism for rotating the disk, a head mechanism for recording and reproducing information on the disk, a head transport mechanism for transporting the head mechanism, a support mechanism for supporting the disk cartridge, and a mechanism for opening and closing the shutter of the disk cartridge. In a disk drive device comprising a shutter opening/closing mechanism, the shutter opening/closing mechanism operates to open/close a shutter of the disk cartridge in response to insertion/extraction of a disk cartridge, wherein the shutter opening/closing mechanism is movable in parallel to the direction of insertion/extraction of the disk cartridge. It is formed by an actuating member provided and an urging means for urging the actuating member toward the insertion/extraction opening side of the disk cartridge, and
The actuating member includes an engaging part that engages with a shutter opening/closing lever provided on the disk cartridge and directly opens and closes the shutter via this opening/closing lever, and an abutting part that comes into contact with the tip of the disk cartridge after the shutter is fully opened. A disk drive device comprising: