JPH0668872B2 - Magnetic recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A plurality of buckets are arranged and fixed at a predetermined angular interval on a rotating body, and magnetic disks can be installed in these buckets, respectively. At a predetermined angular position of the rotating body, that is, a recording / reproducing position, a drive unit is arranged so that it can be moved toward and away from the bucket on the rotating body from both sides thereof.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention moves a magnetic recording / reproducing head (hereinafter referred to as a magnetic head) in a radial direction of a rotating magnetic recording medium to record a signal on an arbitrary track and reproduce a signal from an arbitrary track. , Or a magnetic recording / reproducing apparatus that performs both recording and reproducing, and more specifically, a magnetic recording medium that is recorded / reproduced by holding a large number of magnetic recording media and automatically moving them to a recording / reproducing position. The present invention relates to a replaceable magnetic recording / reproducing device.

2. Description of the Related Art Conventional Problems and Their Problems The electronic still camera (still video camera) that electronically shoots a subject and records the still image on a magnetic recording medium, and other magnetic recording devices and magnetic recording media. There are a magnetic reproducing device for reading out a still image signal and displaying it on a television, and a magnetic recording and reproducing device having both recording and reproducing functions. 1 for each of these devices
Only two magnetic recording media were loaded. Therefore, when exchanging a magnetic recording medium which was being recorded or reproduced for another one, it was necessary to take out the set magnetic recording medium once and then mount another magnetic recording medium anew.

In order to carry out such an operation efficiently, there is one equipped with a movable magazine capable of holding a plurality of magnetic recording media (for example, JP-A-60-243851). This magazine stores a plurality of magnetic recording media in an upright state, and moves and positions them by a movement drive mechanism so that a predetermined magnetic recording medium or an empty storage space is located at a predetermined position (magnetic recording medium replacement position). Control can be performed. When exchanging a magnetic recording medium for recording or reproducing with another one using such a magazine, (1) the magnetic recording medium is removed from the recording / reproducing unit and a predetermined empty space in the magazine is removed. Three steps of storing in a storage place, (2) moving the magazine until the next magnetic recording medium to be used reaches the exchange position, and (3) taking out a new magnetic recording medium from the magazine and mounting it in the recording / reproducing unit. Is required,
There was a problem that it took time to exchange.

It is desired to realize an apparatus (auto changer) having a function capable of automatically and quickly exchanging a plurality of magnetic recording media.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a magnetic recording / reproducing apparatus capable of automatically and quickly exchanging a plurality of magnetic recording media.

The magnetic recording / reproducing apparatus according to the present invention includes a rotating body in which a plurality of buckets holding a magnetic recording medium are circumferentially arranged and fixed at predetermined angular intervals, and a predetermined angular position of the rotating body. In the above, it is characterized in that it is provided with two types of drive units for rotationally driving and recording / reproducing a magnetic recording medium which is arranged so as to be able to approach and separate from both sides of the bucket reaching that position.

Here, the magnetic recording / reproducing device is a concept including a magnetic recording device, a magnetic reproducing device, and a magnetic recording / reproducing device.

One of the two types of drive units is provided with, for example, a rotary drive device including a motor for rotationally driving a magnetic recording medium, and a magnetic recording / reproducing magnetic head transfer device.
The other is provided with a regulation plate mechanism including a regulation plate for maintaining good touching of the magnetic head to the magnetic recording medium.

According to the present invention, when the magnetic recording medium set in the bucket reaches the predetermined angular position (recording / reproducing position), the two types of drive units move in a direction approaching the magnetic recording medium, and the magnetic recording medium is moved. The recording / playback operation is performed by sandwiching them. When the recording / reproducing operation on the magnetic recording medium is completed, the drive unit moves in the direction away from the magnetic recording medium, and the subsequent rotation of the rotating body brings the next magnetic recording medium to the recording / reproducing position. Recording / reproducing operation is performed.

According to the present invention, if the magnetic recording media are respectively mounted in the plurality of buckets on the rotating body, the recording / reproducing operation can be sequentially performed on the plurality of magnetic recording media as described above. Since the magnetic recording medium to be recorded / reproduced can be exchanged without human labor, it is convenient for recording / reproduction of many types of still images or the like, or recording / reproduction for a long time. Further, since the magnetic recording medium is mounted on the bucket fixed to the rotating body and does not need to be moved at the recording / reproducing position at all, the structure of the rotating body holding the magnetic recording medium is simplified, and the driving unit is approached and separated. Since the magnetic recording medium is exchanged by the movement and the rotation of the rotating body, a quick exchange operation becomes possible.

Description of Embodiments Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 are schematic views showing the entire mechanical structure of the magnetic recording / reproducing apparatus, and FIG.
Fig. 1 is a cross section taken along the line II-II of Fig. 1, and Fig. 3 is that of Fig. 1.
The cross sections are shown in the lines III-III respectively. Also the first
In the figure, the bucket 2 indicated by the arrow A is shown with the upper plate cut out to show the video floppy F contained therein, and the bucket 2 indicated by the arrow B shows the structure of the lower plate. The top plate is notched and the video floppy F is also removed.

With reference to these drawings, a video floppy F (magnetic recording medium) mounted in the magnetic recording / reproducing apparatus 1 has a jacket 14 in which a magnetic disk 15 is rotatably housed. A disk hub (core) 16 at the center of the magnetic disk 15 is visible in the center hole 14 _C of the jacket 14. A window 18 for exposing the recording / reproducing area of the magnetic disk 15 to the outside is provided on a part of both sides of the jacket 14. The window 18 is normally closed by a shutter 19, but the shutter 19 is automatically opened by an opening / closing mechanism provided in the bucket 2 when it is inserted into the bucket 2 which will be described later. Further, holes 14d for receiving positioning pins 45, which will be described later, for fixing the video floppy F in the bucket 2 are formed in several places of the jacket 14.

A disk for holding such a video floppy F
The gear 10 is fixed to a gear 5 provided on the shaft 4. Axis 4
Are rotatably supported by a bearing base 9 mounted on a pedestal 12. The pedestal 12 is fixed to the bottom plate 13.

The disk 10 is rotationally driven by the pulse motor 8. The pulse motor 8 is mounted on a mounting member 11 fixed to a bearing stand 9 and a floor plate 13. Pulse motor 8
The gear 6 provided on the output shaft 7 of the gear meshes with the gear 5 and transmits the driving force of the pulse motor 8 to the disc 10. The pulse motor 8 is characterized in that the rotation angle of the disk 10 can be determined in a character-wise manner, but it goes without saying that a normal motor can be used if a limit switch for positioning is also used.

A plurality of (10 in the embodiment) buckets 2 for accommodating the video floppy F are fixedly provided on the disk 10. These buckets 2 are radially arranged at equal angular intervals on the same circumference. The outer end surface of the bucket 2 is fully opened for inserting the video floppy F (the opening position is indicated by 2b).

On one side of the bucket 2, a cutout 2a is formed in its upper surface plate and lower surface plate, and the position of this cutout 2a coincides with the position of the window 18 of the video floppy F mounted in the bucket 2. A window 10a is also formed in the disc 10 at a position corresponding to the cutout 2a. When the bucket 2 reaches the recording / reproducing unit 20 described later and the recording / reproducing operation is started, the regulating plate 27 is passed from above through the notch 2a and the window 18.
Enters and contacts the magnetic disk 15. Window 10 from below
The magnetic head enters through the a, the notch 2a and the window 18 and comes into contact with the opposite surface (recording / reproducing surface) of the magnetic disk 15.

Further, the bottom plate of the bucket 2 is provided with a hole 2c through which a spindle 50 described later advances and a hole 2d through which a positioning pin 45 passes. The disk 10 is also provided with holes corresponding to these holes 2c, 2d (the reference numeral 10c is attached to the hole corresponding to the spindle hole 2c).

The disk 10 is further provided with holes 10e at positions on both sides of each bucket 2 through which a position regulating pin 44 for a holder 26 described later passes.

A recording / reproducing unit 20 is provided at a predetermined angular position on the disc 10. In addition, another predetermined angle position, for example, a position on the opposite side of the recording / reproducing unit 20, is a detachable position of the video floppy F.
The video floppy F is inserted through the opening 2b into the bucket 2 which has reached the detaching position by the rotation of the disc 10. After the insertion, the video floppy F is locked by the lock mechanism (not shown) provided in the bucket 2. In this locked state, the opening 2b is closed. The bucket 2 may be pivotally attached at one end of the bucket 2 so that the bucket 2 rises diagonally with the opening 2 facing upward.

Next, the recording / reproducing unit 20 will be described with reference to FIGS. 4 to 6.

FIG. 4 is an enlarged plan view of the recording / reproducing unit 20 with a part cut away.

FIGS. 5 and 6 are right side views of FIG. 4, in which a part of the side plate is cut away, and FIG.
FIG. 6 shows the state during the reproducing operation, and FIG. 6 shows the state when the drive unit is opened. Further, the drive mechanism 30 is removed in FIG. Hereinafter, when referring to front and back and left and right, it is based on FIG.

The recording / reproducing unit 20 is surrounded by a frame 24 fixed to the bottom plate 13 on the front surface and both left and right side surfaces. Frame 24
Shafts 42 and 43 are horizontally laid parallel to each other and rotatably at the rear portions of the left and right side plates (particularly indicated by reference numeral 24a) constituting the. Two gears 35 are fixed to the shaft 42, and two gears 36 are fixed to the shaft 43 at regular intervals.
These corresponding gears 35 and 36 mesh with each other. A cross member 25 whose both sides are bent downward is passed between front portions of both side plates 24a of the frame 24. The horizontal shaft 25 reinforces the frame 24 and stops swinging of the support plate 22 described later at that position.

Both sides of the support plate 21 holding the upper drive unit are bent downward to form side plates 21a. The side plate 21a becomes a rear extending arm and is fixed to the outer surface of the gear 35. The drive unit held by the support plate 21 is a regulation plate mechanism, and includes a regulation plate 27 and a holder 26 thereof. The restriction plate 27 is fixed to the holder 26, and the holder 26 is held by the support plate 21 by the coil spring 28. This spring 28
A hole 26e through which the position regulating pin 44 passes is formed at the mounting position of. Further, stopper pieces 21b horizontally extend from both left and right side plates 21a of the support plate 21.

The support plate 22 holding the lower drive unit is fixed to the gear 36 by a mounting member 29. An oval hole 29a is formed in the arm portion of the mounting member 29, and the shaft 42 passes through the oval hole 29a. As will be described later, the mounting member 29 is driven to swing, but the oval hole 29a causes the shaft 4
Interference with 2 is prevented.

A large opening is opened in the center of the support plate 22, and a fixing member 23 is fixed so as to be located in this opening. The fixing member 23 is provided with a rotary drive unit for rotationally driving the magnetic disk 15 and a head transfer unit for transferring the magnetic head 54 in the radial direction of the magnetic disk 15. The rotary drive unit is a motor 5 with a spindle 50.
1, a frequency generator 51a for outputting a signal of a frequency representing the number of revolutions of the motor 51, a board on which a control circuit of the motor 51 is assembled, and the like. The head transfer unit is a step motor 5
2, a mechanism that holds the magnetic head 54 movably, a step
It includes a mechanism for converting the rotation of the motor 52 into a linear motion of the magnetic head 54 (these mechanisms and the above-mentioned substrate are housed in the box 53) and the like. The spindle 50 of the motor 51 and the magnetic head 54 (shown by the chain line in FIG.
In the figure, it is hidden by the spindle 50 and cannot be seen.
Is projected above. Further, a position regulating pin 44 and a positioning pin 45 are erected at appropriate positions on the fixing member 23.
The position control pin 44 controls the height position and horizontal position of the control plate 27 and its holder 26 and is relatively long, and the positioning pin 45 determines the position of the video floppy F. The upper portion of each of the pins 44 and 45 is tapered and has a small diameter, and has a step portion for regulating the height position.

Sector gears 34 are fixed to the left and right front portions of the support plate 22. A stopper piece 22b is provided on the support plate 22 at a position facing the stopper piece 21b of the upper support plate 21. Stopper piece of support plate 21 during recording / playback operation
21b and the stopper piece 22b of the support plate 22 engage with each other so that both support plates 2
The swing of 1,22 is regulated mutually.

The upper support plate 21 and the lower support plate 22 described above are discs, respectively.
It is located above and below 10. A drive mechanism 30 for oscillatingly driving these support plates 21 and 22 to bring the above-mentioned drive units respectively provided on the support plates 21 and 22 close to and away from each other will be described.

A shaft 40 is rotatably mounted on the front of the left and right side plates 24a of the frame 24. Gears 33 are fixed to the shaft 40 at positions corresponding to the sector gears 34, and these gears 33 mesh with the sector gears 34. The large diameter gear 32 is fixed to one of the two gears 33.

On the other hand, the drive motor 55 is attached to the frame 24 by the mounting member 63.
It is fixed to. The worm 37 is attached to the output shaft 56 of the motor 55.
Is fixed. Worm gear meshing with worm 37
31a is fixed to the shaft 41 with a predetermined distance from the gear 31b. The shaft 41 has a mounting member 62 provided above the motor 55.
It is rotatably supported between the frame and the frame 24. gear
31b meshes with the gear 32 described above.

When the motor 55 is driven from the state shown in FIG. 6 (the output shaft 56 rotates clockwise in FIG. 4), the worm gear 31a rotates via the worm 37, and the gear 31b coaxial with this also rotates. Rotate. The rotation of the gear 31b is transmitted to the gear 33 through the gear 32 fixed to the shaft 40. The gear 33 transmits the rotational force to the sector gear 34 meshed with the gear 33, so that the lower support plate 22 swings around the shaft 43 in the direction in which the front portion thereof faces upward. The rotation of the shaft 43 is generated by rotating the shaft 4 via the gears 36 and 35.
2, the upper support plate 21 swings about the shaft 42 in the direction opposite to the support plate 23, that is, in the direction in which the front portion thereof faces downward. Therefore, both support plates 21 and 22 move towards each other and the drive units mounted on these support plates 21, 22 move closer to each other.

There is a part of the disc 10 between the two support plates 21 and 22, and a bucket 2 on the disc 10 is positioned at the recording / reproducing position. The lower support plate 22 approaches the disc 10 from below,
The pin 45 enters the hole 14d of the video floppy F through the hole of the disk 10 and the hole 2d of the lower surface of the bucket 2 and positions the video floppy F. In addition, the spindle 50 has a hole in the disk 10.
10c, hole 2c in bottom plate of bucket 2, video floppy F
The magnetic disk 15 is inserted into the core 16 of the magnetic disk 15 through the hole 14c, and the magnetic disk 15 is chucked by the spindle 50. Further, the magnetic head 54 contacts the magnetic disk 15 through the opening 10a of the disk 10, the opening 2a of the bucket 2 and the window 18 of the jacket 14. On the other hand, the upper support plate 21 is also a circular plate 10.
Approaching from above. Pin 44 is hole 10e in disk 10
Project upward through the holes and enter the hole 26e of the holder 26.
Since the stepped portion of the pin 44 abuts on the peripheral edge of the hole 26e of the holder 26, the height of the holder 26 and thus the regulation plate 27 is regulated by this. The regulation plate 27 includes the opening 2a of the bucket 2 and the jacket 14.
It contacts the magnetic disk 15 from above at a position facing the magnetic head 54 through the window 18. This ensures good touching between the magnetic head 54 and the magnetic disk 15. In this way, the state shown in FIG.
Playback operation becomes possible.

The exchange of the video floppy F at the magnetic recording / reproducing position is performed as follows. After the magnetic recording / reproducing operation for a given video floppy F, when the drive motor 55 is rotationally driven in the opposite direction to the above, the upper and lower support plates 21 and 22 and the drive units provided on them are It moves in the direction away from each other and becomes the state shown in FIG.
After this, the disk 10 is rotated by a predetermined angle, and the next video floppy F is brought to the recording / reproducing position. Then, the motor 55 is driven again, and the upper and lower support plates 21 and 22 move toward each other, resulting in the state of FIG. The video floppy F brought to the recording / playback position in this state
Is recorded / reproduced.

In the above embodiments, the support plates 21 and 22 provided with the drive unit of the recording / reproducing unit 20 are the shafts 42 provided on the outer peripheral side of the disc 10.
It is fixed to 43 respectively. An opening 10a may be provided in the center of the disc 10 as shown in FIG. 7, and the recording / reproducing section 20 may be installed in the opening 10a. The support plates 21 and 22 are driven to swing around the shafts 42 and 43 on the inner peripheral edge side of the disk 10. Disk 10
Is preferably rotatably supported by upper and lower drive rollers and a circular guide (including a roller in some cases).

Also, the upper and lower support plates, each equipped with a drive unit, are held in parallel with each other so that they can be moved toward and away from each other, and the support plates are approached from both sides of the disk 10 toward the disk 10. Alternatively, it may be separated.

[Brief description of drawings]

1 to 3 show the entire mechanical structure of the magnetic recording / reproducing apparatus. FIG. 1 is a plan view thereof, and FIG. 2 is a sectional view taken along line II-II of FIG. Figure 3 is III of Figure 1.
FIG. 3 is a sectional view taken along line III-III. FIG. 4 is an enlarged plan view of the recording / reproducing portion, FIGS. 5 and 6 are right side views thereof, FIG. 5 shows a recording / reproducing operation state, and FIG. 6 shows a disc with a drive unit opened. The exchange operation states are shown respectively. FIG. 7 is a perspective view showing the outline of another embodiment. 1 ... Magnetic recording / reproducing device, 2 ... Bucket, 5,6,31a, 31b, 32,33,35,36 ... Gear, 8 ... Pulse motor, 10 ... Disc, 20 ... Recording / reproducing section, 21 ... Support plate (upper side), 22 ... Support plate (lower side), 26 ... Holder, 27 ... Restriction plate, 30 ... Drive mechanism, 34 ... Sector gear, 37 ... Worm, 44 ... Position restriction pin, 45 ... Positioning pin, 50 … Spindle, 51, 52, 55… Motor, 54… Magnetic head, F… Video floppy.

Claims (2)

[Claims] 1. A rotating body in which a plurality of buckets for holding a magnetic recording medium are circumferentially arranged and fixed at a predetermined angular interval, and at a predetermined angular position of the rotating body, a bucket having reached that position is provided. A magnetic recording / reproducing apparatus comprising two types of drive units for rotationally driving and recording / reproducing a magnetic recording medium, which are arranged so as to be able to approach and separate from both sides. 2. One of the two types of drive units is provided with a rotary drive device including a motor for rotationally driving a magnetic recording medium and a magnetic recording / reproducing magnetic head transfer device, and the other is a magnetic recording device. The magnetic recording / reproducing apparatus according to claim (1), comprising a regulating plate mechanism including a regulating plate for maintaining good touching of the magnetic head with respect to the medium.