JP2000322804A - Recording and / or playback device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To make it possible to selectively mount a plurality of disk cartridges having different sizes and to record and reproduce information signals on disk-shaped recording media having different diameters. Improve convenience. SOLUTION: A hard disk 5 is rotatably housed, and a cartridge mounting portion 21 for selectively mounting a plurality of disk cartridges 1 having different sizes defined by the diameter of the hard disk 5; Rotation mechanism 22 for rotating disk 5
A magnetic head device 23 that records or reproduces information signals on the hard disk 5;
An identification mechanism 24 for identifying the size of the disk cartridge 1 mounted on the hard disk 5, and a head moving operation mechanism 25 for moving the magnetic head device 23 to an initial position on the outer peripheral side of the hard disk 5 based on the identification result by the identification mechanism 24. And

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a cartridge having different sizes, rotating a disk-shaped recording medium with a single disk rotating mechanism, and recording and / or reproducing data with a single recording and / or reproducing head. The present invention relates to a recording and / or reproducing apparatus capable of recording or reproducing an information signal on a medium.

[0002]

2. Description of the Related Art Conventionally, a hard disk used as a recording medium is rotatably housed in a cartridge body.
Used as a disk cartridge. Hard disks used for disk cartridges have a diameter of 2.5
And 3.5 inches, and are rotatably housed so as to be inscribed in the cartridge body constituting the disk cartridge. The disk cartridges using the hard disk as a recording medium as described above are mounted in dedicated recording and / or reproducing devices, and record or reproduce information signals on the hard disk.

[0003]

As described above, a disk cartridge using hard disks having different diameters can record or reproduce information signals on or from the hard disk using dedicated recording and / or reproducing devices. Therefore, the user must prepare a recording and / or reproducing apparatus corresponding to each disk cartridge, and the number of recording and / or reproducing apparatuses to be used increases, which is inconvenient. Further, since the recording and / or reproducing apparatus corresponding to each disk cartridge can be used only for the corresponding disk cartridge, the usage is limited.

Accordingly, the present invention provides a method of selectively mounting a plurality of disk cartridges having different sizes and recording or reproducing information signals on disk-shaped recording media having different diameters. It is another object of the present invention to provide a new recording and / or reproducing apparatus for improving convenience.

[0005]

According to the present invention, a recording and / or recording method according to the present invention is provided.
Alternatively, the reproducing apparatus selectively mounts a plurality of disc cartridges having different sizes defined by the diameter of the disc-shaped recording medium, and records or reproduces information signals on the disc-shaped recording media having different diameters. Is what you can do. That is, the recording and / or reproducing apparatus according to the present invention has a size in which the disk-shaped recording medium is rotatably stored and the size is defined by the diameter of the disk-shaped recording medium, in order to solve the above-described problem. A cartridge mounting portion for selectively mounting a plurality of disk cartridges of different types, a disk rotation operating mechanism for rotating a disk-shaped recording medium of the disk cartridge mounted on the cartridge mounting portion, and a disk mounted on the disk rotation operating mechanism Recording / reproducing head for recording / reproducing information signals on / from a disk-shaped recording medium moved in the radial direction of the disk-shaped recording medium, and an identification mechanism for identifying the size of the cartridge mounted on the cartridge mounting portion And a recording and / or reproducing head on the outer peripheral side of the disc-shaped recording medium based on the identification result by the identification mechanism. And a head movement operation mechanism for moving to a position. In this recording and / or reproducing apparatus, disc cartridges having different sizes are selectively mounted on a cartridge mounting section formed in the apparatus main body. The disk-shaped recording media having different diameters of the disk cartridges selectively mounted on the cartridge mounting portion are rotated by the disk rotation operation mechanism so that the centers of rotation are matched. Further, in the recording and / or reproducing apparatus, when a disc cartridge is loaded, the discriminating mechanism identifies the size of the loaded disc cartridge, and based on the discrimination result, drives the head moving operation mechanism to rotate the disc. It moves to the initial position on the outer peripheral side of the disk-shaped recording medium mounted on the operation mechanism. Thereafter, the recording and / or reproducing head is moved in the radial direction of the disc-shaped recording medium to record or reproduce information signals on the disc-shaped recording medium.

Here, the disc-shaped recording medium and the disc cartridge are preferably formed to have substantially the same thickness so that recording and reproduction can be performed on the disc-shaped recording medium with the same recording and / or reproducing head.

Further, the cartridge mounting portion is provided with a guide portion which is engaged with a guide groove formed substantially in the same direction as the cartridge insertion / removal direction so that disk cartridges of different sizes can be reliably inserted / removed. Is provided.

Further, the recording and / or reproducing apparatus is provided in accordance with each of the differently sized disk cartridges to be mounted on the cartridge mounting portion, the insertion end of the disk cartridge is abutted, and the disk cartridge mounting position is provided. A positioning wall that performs positioning, a pressing pin that is pressed against each of the differently sized disk cartridges, and the positioning wall and the pressing pin are connected, and when one disk cartridge is mounted on the cartridge mounting portion, it corresponds to another cartridge. And a positioning mechanism having a positioning wall formed as described above and an elastic arm for retracting the pressing pin.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a recording / reproducing apparatus to which the present invention is applied will be described with reference to the drawings. This recording / reproducing apparatus is capable of selectively mounting three types of disk cartridges having different sizes and recording or reproducing information signals on hard disks having different diameters. The recording / reproducing apparatus to which the present invention is applied, specifically,
A first disk cartridge 1a using a first hard disk having a diameter of 3.5 inches as a recording medium,
A second disk cartridge 1b using a second hard disk having a diameter of 2.5 inches as a recording medium and a third disk cartridge 1c using a third hard disk having a diameter of 1.8 inches as a recording medium are provided. Used. These first to third disk cartridges 1a,
Each of 1b and 1c is defined by the first to third hard disks, and specifically, the cartridge main body storing the hard disk is formed to have a size in which the hard disk is almost inscribed. That is, the outer shapes of the first to third disk cartridges are formed so as to be substantially similar.

Prior to description of a recording / reproducing apparatus to which the present invention is applied, first to third disk cartridges 1a to 1c used in the recording / reproducing apparatus will be described with reference to FIG.
This will be described with reference to FIGS. As shown in FIGS. 1 and 2, the first to third disk cartridges 1a to 1c each have a pair of upper and lower halves 2, 3 formed by injection molding of a synthetic resin or the like. 4c, and first to third hard disks 5a to 5a to which information signals are recorded in the cartridge body 4.
5c is rotatably stored. Here, the upper and lower halves 2 and 3 constituting the cartridge bodies 4a to 4c are formed by injection molding a synthetic resin material such as acrylonitrile butyl styrene (ABS) resin. Each of the cartridge bodies 4a to 4c is formed in a size such that a hard disk housed therein is substantially inscribed. That is, the cartridge main body 4a that houses the first hard disk having a diameter of 3.5 inches is a size in which the first hard disk is inscribed and has three types of disk cartridges 1a to 1c.
Cartridge body 4 for storing a second hard disk having the largest size and a diameter of 2.5 inches.
b is a size in which the second hard disk is inscribed, has a size next to the cartridge main body 4a, and contains a third hard disk having a diameter of 1.8 inches. In the inscribed size, of the three types of disk cartridges 1a to 1c,
It is the smallest. The cartridge body 4
The thicknesses a to 4c are the same or are formed so that the thickness difference is within 0.2 mm so that a single disk rotation operation mechanism and a magnetic head device can be used.

The first to third hard disks 5a rotatably housed in the cartridge bodies 4a to 4c.
5c, a magnetic layer, a protective layer and the like are formed on a non-magnetic rigid disk substrate made of glass, synthetic resin, metal or the like;
The hub mechanism 6 is attached so as to fit into a center hole formed in the center. As shown in FIG. 4, the hub mechanism 6 includes an upper hub 6a disposed on one of the first to third hard disks 5a to 5c and the other of the first to third hard disks 5a to 5c. A lower hub 6b disposed on the disk surface of the upper hub 6a and a lower hub 6b.
and b, the first to third hard disks 5a to 5c are attached so as to clamp the peripheral edge of the center hole. The upper hub 6a and the lower hub 6b are formed of a magnetic material such as a metal plate so as to be magnetically attracted by a magnet provided on the disk rotation operation mechanism side. The hub mechanism 6 is formed of a magnetic material such as a metal plate. When the first to third hard disks 5a to 5c are mounted on a disk rotation operation mechanism provided on the recording / reproducing apparatus side, the hub mechanism 6 rotates. The first to third hard disks 5a to 5a are magnetically attracted by a magnet provided on the operation mechanism side.
d is clamped by the disk rotation operation mechanism. Although not described in detail, the spindle of the disk rotation operation mechanism engages with the center of the lower hub 6b constituting the hub mechanism 6 when the disk hub is mounted on the disk rotation operation mechanism. A center hole for centering the third hard disks 5a to 5c is formed.

The first to third hard disks 5a to 5c as described above are different from each other only in diameter, and have a thickness such that a single disk rotation operation mechanism and a magnetic head device can be used. Same or thickness difference is 0.2m
m. The first to third hard disks 5a to 5c have substantially the same recording surface density, track pitch, and recording linear density so that a single magnetic head device 23 can record or reproduce information signals. It is less than that.

A cartridge body 4 for rotatably storing the first to third hard disks 5a to 5c as described above.
As shown in FIGS. 1 to 3, a pair of upper and lower halves 2 and 3 formed by injection molding a synthetic resin are butt-connected. This cartridge body 4a
1 and 2 in the upper and lower halves 2 and 3 constituting
As shown in FIG. 5, rising peripheral walls 7, 8 which are butt-joined to each other to form the outer peripheral wall of the cartridge body 4 are formed on the outer periphery, and the hard disks 5a to 5d are inscribed in the rising peripheral walls of the upper and lower halves 2, 3. A partition wall constituting a disk storage section in which the disk 5c is rotatably stored is formed in a substantially arc shape. When the upper and lower halves 2 and 3 are butt-joined, the partition wall forms a disk storage unit 9.

At the center of the lower half 3 constituting the lower surface side of the cartridge bodies 4a to 4c, as shown in FIGS. 2 and 3, mounted on the hard disks 5a to 5c housed in the cartridge bodies 4a to 4c. A substantially circular central opening 1 that exposes a lower hub 6b constituting the hub mechanism 6 outward.
1 is formed.

The cartridge bodies 4a to 4c include:
As shown in FIGS. 2 and 3, a recording and / or reproducing opening 12 into which the magnetic head device 23 of the recording / reproducing device 20 enters is formed on a side surface in the direction of insertion into the recording / reproducing device 20. I have. The opening 12 is formed by cutting out a part of the rising peripheral walls 7, 8 formed upright around the upper and lower halves 2, 3. And
When the first to third disk cartridges 1a to 1c are mounted, the magnetic head device 23 of the recording / reproducing device 20
After entering through the opening 12, the magnetic head at the tip of the magnetic head device 23 is moved to the first to third hard disks 5 a.
Operate in the radial direction of ~ 5c.

The cartridge main bodies 4a to 4c close the recording and / or reproducing opening 12 into which the magnetic head device of the recording / reproducing apparatus enters, and foreign matter such as dust is contained in the cartridge main bodies 4a to 4c. A cover 13 for preventing intrusion is rotatably attached. Lid 13
As shown in FIGS. 2 and 3, the cartridge body 4a
On the back side of the arrow 4c to the arrow A in FIG.
In the direction A and the direction opposite to the arrow A. The cover 13 is urged by an urging member (not shown) in a direction indicated by an arrow A in FIG. 3 to close the recording and / or reproducing opening 12. Further, a shutter portion 15 for closing the recording and / or reproducing opening 12 is formed on the front side of the cartridge bodies 4a to 4c. The lid 13 is formed with an engagement piece 16 with which a rotating operation pin for rotating the lid 13 on the recording / reproducing apparatus side is engaged. This engagement piece 16 is
a to 4c face outward from a guide hole 17 formed on one side surface parallel to the direction of insertion into the recording / reproducing device, so that a rotating operation pin on the recording / reproducing device side can be engaged. .

In the lower half 3 constituting the cartridge bodies 4a to 4c, first to third disk cartridges 1a to 1c are provided on one side surface parallel to the direction of insertion into the recording and reproducing apparatus. When loaded, a guide groove 19 is formed to guide movement of the recording / reproducing apparatus to a cartridge mounting portion. That is, the guide groove 19 is formed from the side surface on the insertion end side of the first to third disk cartridges 1a to 1c to the recording / reproducing apparatus to the side surface facing the side surface. The guide groove 19 is engaged with a guide portion formed in the cartridge mounting portion of the recording / reproducing apparatus along the insertion direction of the first to third disk cartridges 1a to 1c.

When the first to third disk cartridges 1a to 1c as described above are inserted into the apparatus main body through the insertion / removal opening of the recording / reproducing apparatus, the cartridge main bodies 4a to 4c are inserted into the guide portions on the recording / reproducing apparatus side. It is engaged with the guide groove 19 formed on the lower surface and is mounted on the cartridge mounting portion. At the same time, a guide hole 17 formed on one side surface parallel to the direction in which the cartridge bodies 4a to 4c are inserted into the recording / reproducing device.
The recording / reproducing device 2 is attached to the engagement piece 16 facing further outward.
The first to third rotation operation pins on the 0 side are engaged, and the lid 1
Reference numeral 3 denotes first to third disk cartridges 1a to 1c.
Is rotated in the direction of arrow A in FIG. 3 to open the recording and / or reproducing opening 12. Further, the first to third cartridges mounted on the cartridge
The disk cartridges 1a to 1c
The disk rotation operation mechanism 22 of the recording / reproducing apparatus 20 is further advanced, the first to third hard disks 5a to 5c are clamped, and the first to third hard disks 5a to 5c are clamped.
Are made rotatable. From the recording and / or reproducing opening 12 of the cartridge main bodies 4a to 4c, a magnetic head device 23 that records or reproduces information signals on the first to third hard disks 5a to 5c is connected to the cartridge main body 4a. 4c. The recording or reproduction of the information signals on the first to third hard disks 5a to 5c is performed by the magnetic head unit disposed at the tip of the magnetic head device 23.
5c is performed over the inner and outer circumferences.

When the first to third disk cartridges 1a to 1c are removed from the recording / reproducing device 20,
The lid 13 opening the recording and / or reproducing opening 12 is turned in the direction opposite to the arrow A in FIG. 3 by the urging force of the urging member that urges the lid 13 in the direction of the arrow A in FIG. The cartridge 12 is moved to close the opening 12, thereby preventing foreign matter such as dust from entering the cartridge bodies 4a to 4c.

In the recording / reproducing apparatus 20 for the first to third disk cartridges 1a to 1c as described above, the first to third disk cartridges 1a to 1c are mounted as shown in FIGS. A cartridge mounting portion 21, a disk rotation operating mechanism 22 for rotating the first to third hard disks 5a to 5c stored in the cartridge main bodies 4a to 4c, and a first to third hard disks 5a to 5c
A magnetic head device 23 for recording or reproducing an information signal with respect to 5c, an identification mechanism 24 for identifying the size of the disk cartridge mounted on the cartridge mounting portion 21,
A head moving operation mechanism for moving the magnetic head device to an initial position on the outer peripheral side of the first to third hard disks based on a result of the identification by the identification mechanism; When any one of the first to third disk cartridges 1a to 1c is mounted, the recording / reproducing device 20 causes the identification mechanism 24 to identify the size of the disk cartridge. Then, based on the identification result identified by the identification mechanism 24, the magnetic head device 23 is entered into the cartridge main bodies 4 a to 4 c by the head moving operation mechanism 25, and the magnetic head unit is moved to the first to third hard disks 5.
The recording / reproducing of information signals is performed on the first to third hard disks 5a to 5c by operating over the inner and outer peripheries of a to 5c.

As shown in FIGS. 5 and 6, the recording / reproducing apparatus 20 is formed on the front surface of an apparatus main body 31 and includes first to third disk cartridges 1a to 1c.
Cartridge insertion / removal opening 3 for insertion / removal across the inside / outside of the cartridge
2, a base plate 33 is disposed in the apparatus main body 31 so as to be continuous with the lower peripheral portion of the cartridge insertion opening 32. The base plate 33 is provided with the first to third disk cartridges 1 a to 1
The cartridge mounting unit 21 on which the printer c is mounted is configured.

It should be noted that the first to third parts with respect to the
As shown in FIG. 5, the cartridge insertion / removal opening 32 into which the disk cartridges 1a to 1c are inserted / removed is formed on the front surface of the apparatus main body 31 in a substantially rectangular shape according to a size capable of inserting / removing the largest first disk cartridge 1a. It is formed in a shape. In the cartridge insertion / removal opening 32, first to third opening / closing lids 26 to 28 into which foreign substances such as dust enter the apparatus main body 31 are rotatably disposed. The first opening / closing lid 26 is rotatably provided at the outermost side of the cartridge insertion / removal opening 32, and presses against the side surface on the insertion end side of the first disk cartridge 1a when the first disk cartridge 1a is inserted. 5, and is supported so as to rotate in the direction of arrow F in FIG. The second opening / closing lid 27 is disposed adjacent to the inside of the first opening / closing lid 26, and when the first and second disc cartridges 1a and 1b are inserted, the first and second discs are opened. The cartridges 1 a and 1 b are supported by being pressed against the side surfaces on the insertion end side and rotating in the same direction as the first opening / closing lid 26 in the arrow F direction in FIG. 5. Further, the third opening / closing lid 28 is rotatably disposed adjacent to the second opening / closing lid 27 at the innermost side of the cartridge insertion / removal opening 32. Third
When the first to third disk cartridges 1a to 1c are inserted, the opening / closing lid 28 is pressed against the side surface on the insertion end side of the first to third disk cartridges 1a to 1c, and the first and second disk cartridges 1a to 1c are pressed. 5 are supported so as to rotate in the same direction as arrow F in FIG. And the first
To the third opening / closing lids 26 to 28
2 is rotatably supported by a support shaft 29 disposed below the
The urging member (not shown) urges the cartridge insertion / removal opening 32 in a direction opposite to the arrow F in FIG.

When the first disk cartridge 1a is inserted into the cartridge slot 32, the first disk cartridge 1a presses the first to third opening / closing lids 26 to 28, and causes the first to third opening / closing lids. The lids 26 to 28 are rotated about the support shaft 29 as a fulcrum in a direction indicated by an arrow F in FIG. Also,
When the second disk cartridge 1b is inserted into the cartridge slot 32, the second disk cartridge 1b
Presses the second and third opening / closing lids 27 and 28 and turns the second and third opening / closing lids 27 and 28 around the support shaft 29 in the arrow F direction in FIG. And is inserted into the apparatus main body 31. At this time, the first opening / closing lid 26 is urged by the urging member in the direction indicated by the arrow F in FIG. 5 without being pressed by the second disk cartridge 1b, and is in a position where the cartridge insertion / removal opening 32 is closed. . Further, when the third disk cartridge 1c is inserted into the cartridge slot 32, the third disk cartridge 1c presses the third opening / closing lid 28 and pushes the third opening / closing lid 28 into the cartridge slot 32. The main body 31 is rotated about the support shaft 29 as a fulcrum in the direction of arrow F in FIG.
Is inserted into. At this time, the first and second opening / closing lids 2
5 are urged by the urging member in the direction indicated by the arrow F in FIG. 5 without being pressed by the third disk cartridge 1c, and are located at positions where the cartridge insertion / ejection opening 32 is closed. That is, when the first to third disk cartridges 1a to 1c are inserted, the first to third opening / closing lids 26 to 28 unnecessarily open the cartridge insertion / removal opening 32 to a minimum, so that the cartridge insertion / removal opening is unnecessary. 32 is prevented from opening, and foreign matter such as dust is prevented from entering the inside of the apparatus main body 31.

As shown in FIGS. 6 and 7, the cartridge mounting portion 21 is provided with a guide mechanism 34 for guiding the first to third disk cartridges 1a to 1c in the insertion and removal directions. A guide mechanism 34 for guiding the insertion and removal of the first to third disk cartridges 1a to 1c.
The first guide 35a guides the insertion and removal of the first disk cartridge 1a, the second guide 35b guides the insertion and removal of the second disk cartridge 1b, and the insertion of the third disk cartridge 1c. The third to guide prolapse
And a guide portion 35c. These first to third guide portions 35a to 35c are provided along the insertion and removal directions of the first to third disk cartridges 1a to 1c.
To the guide grooves 19 of the third disk cartridges 1a to 1c. These first to third guide portions 35
a to 35c are the first to third disk cartridges 1
They are provided at predetermined intervals corresponding to the guide grooves 19a to 1c.

First to third guide portions 35a to 35c
As shown in FIGS. 6 and 7, the inclined surface portion 36 is provided on the insertion end side of the first to third disk cartridges 1a to 1c.
Is formed, and the first to third disk cartridges 1 are formed.
When a to 1c are inserted, they are easily engaged with the guide grooves 19. In addition, the first to third guide portions 35a to 35a-3
5c is disposed movably in the directions indicated by arrows C and C in FIG. 7, which are substantially perpendicular to the base plate 33, and is urged by the elastic body 37 in the direction indicated by arrows C in FIG. I have. Then, the first to third guide portions 35a to 35a-3
5c, when the first to third disk cartridges 1a to 1c are not mounted on the cartridge mounting portion 21,
The first to third disk cartridges 1a are located at a first position protruding most from the base plate 33 by the elastic body 37.
When engaged with the guide portions 35a to 35c of the first to third disc cartridges 1a to 1c, they are pressed by the bottom surface of the guide groove 19 and slightly project from the base plate 33. When it is pressed to the third position, it becomes the third position which is almost flush with the base plate 33.

The cartridge mounting portion 21 has a first
A positioning mechanism 41 for positioning the third to third disk cartridges 1a to 1c in the insertion direction is provided.
As shown in FIG. 6, when the first disk cartridge 1a is mounted on the base plate 33 on which the cartridge mounting portion 21 is formed, the positioning mechanism 41 abuts against the side surface on the insertion end side of the cartridge body 4a. The first disk cartridge 1a is positioned in the insertion / removal direction.
Positioning wall 42a and the second disk cartridge 1
When the cartridge b is placed on the base plate 33 on which the cartridge mounting portion 21 is configured, the side surface on the insertion end side of the cartridge body 4b is abutted, and the second disk cartridge 1b is positioned in the insertion / removal direction. 2 positioning wall 42
b, when the third disk cartridge 1c is placed on the base plate 33 on which the cartridge mounting portion 21 is formed, the side of the insertion end side of the cartridge body 4c is abutted, and the third disk cartridge 1c is A third positioning wall 42c for positioning in the insertion / removal direction.

The first to third positioning walls 42a to 42a
Reference numeral 42c denotes a base so as to abut the side surface near the corner on the side where the recording and / or reproduction opening 12 is not provided on the insertion end side of the corresponding first to third disk cartridges 1a to 1c. It is disposed so as to protrude from the plate 33. These first to third positioning walls 42a to 42c
When the first to third disk cartridges 1a to 1c are inserted into the apparatus main body 31, the recording and / or reproducing opening 12 on the insertion end side of the first to third disk cartridges 1a to 1c. Is positioned at a mounting position where information signals can be recorded or reproduced with respect to the first to third hard disks 5a to 5c.

As shown in FIG. 6, when any one of the first to third disc cartridges 1a to 1c is inserted into the apparatus main body 31, as shown in FIG. A retracting mechanism 44 for retracting the positioning wall of the unsupported disk cartridge is provided. The retracting mechanism 44 for retracting the first to third positioning walls 42a to 42c includes:
When the first disk cartridge 1a is inserted into the apparatus main body 31, the second positioning wall 42b is moved to the apparatus main body 31.
The first elastic arm 45a retracted to the lower side and the first and second disk cartridges 1a and 1b
And a second elastic arm 45b for retracting the third positioning wall 42c below the base plate 33 when inserted into the base plate 33. First and second elastic arms 45a, 45b
Are formed so as to be elastically displaced in a direction indicated by an arrow D in FIG.

The first elastic arm 45a for retracting the second positioning walls 42b and 42c below the base plate 33 is
One end is integrally connected to a support plate 46 disposed substantially parallel to the front surface of the apparatus main body 31, and the other end is connected to a second positioning wall 42.
b. That is, the first elastic arm 45a is formed integrally with the support plate 46 on the front side of the apparatus main body 31 substantially in parallel with the first guide portion 35a for guiding the insertion and removal of the first disk cartridge 1a. First
A second arm portion 48 formed integrally with the second positioning wall 42b substantially parallel to the second guide portion 35b for guiding insertion and removal of the second disk cartridge 1b; First arm 47 and second arm 48
The connecting plate 49 connects the ends facing each other to connect the support plate 46 and the second positioning wall 42b.
On the connecting portion 49 side of the first arm portion 47, a first pressed projection 51 which is pressed against the bottom surface constituting the guide groove 19 of the first disk cartridge 1a is provided in a protruding manner. The first pressed projection 51 is formed so as to protrude from the first arm portion 47 to the upper surface side of the base plate 33, and to penetrate the first guide portion 35a so as to slightly protrude from the first guide portion 35a. Have been. When the first disk cartridge 1a is inserted into the apparatus main body 31, the first pressed projection 51 is brought into the guide groove 19 together with the first guide portion 35a.
And the first elastic arm 45a is retracted in the direction of arrow D in FIG. 6, which retracts the second positioning wall 42b below the base plate 33.

The second elastic arm 45b for retracting the third positioning wall 42c below the base plate 33 is provided at one end of the support plate 4 which is disposed substantially parallel to the front surface of the apparatus main body 31.
6, and the other end is connected to the third positioning wall 42c.
And are integrally connected. That is, the second elastic arm 45b is formed substantially in parallel with the second guide portion 35b for guiding the insertion and removal of the second disk cartridge 1b and integrally with the support plate 46 on the front side of the apparatus main body 31. The third arm portion 52 and the third guide portion 35c for guiding the insertion and removal of the third disk cartridge 1c are substantially parallel to the third arm portion 52.
A second arm 53 integrally formed with the positioning wall 42c of the first arm 52 and a connecting portion 54 connecting the opposite ends of the first arm 52 and the second arm 53 to each other. The third positioning wall 42c is connected. Further, a second pressed projection 55 that is pressed against the bottom surface that forms the guide groove 19 of the second disk cartridge 1b is provided on the connecting portion 54 side of the first arm portion 52 in a protruding manner.
The second pressed projection 55 protrudes from the first arm 52 to the upper surface side of the base plate 33, and furthermore, the second guide 35
b is formed so as to penetrate through the second guide portion 35b slightly. When the second disk cartridge 1b is inserted into the apparatus main body 31, the second pressed projection 55 is pressed against the bottom surface of the guide groove 19 together with the second guide portion 35b, and the second elastic arm 45b is pressed. The second
6. The positioning wall 42c is retracted below the base plate 33 in the direction of arrow D in FIG.

The first positioning wall 42a for positioning the first disk cartridge 1a is provided corresponding to the largest first disk cartridge 1a.
When the second and third disk cartridges 1b and 1c are inserted into the apparatus main body 31, they do not hinder the insertion of the second and third disk cartridges 1b and 1c. Thus, unlike the second and third positioning walls 42b and 42c, they do not retreat to the lower surface side of the base plate 33.

When the largest first disk cartridge 1a is inserted into the apparatus main body 31 through the cartridge insertion / removal opening 32, the retraction mechanism 44 of the first to third positioning walls 42a to 42c as described above operates. The first guide portion 35a is engaged with the guide groove 19 of the one disk cartridge 1a, and the first disk cartridge 1a is moved to a mounting position where the first disk cartridge 1a is abutted against the first positioning wall 42a.
At this time, as shown in FIG. 7, the first guide portion 35a is pressed against the bottom surface constituting the guide groove 19 of the first disk cartridge 1a, and the first guide portion 35a is moved from the first position most protruding from the base plate 33 to the base plate. 33 to a second position slightly protruding from the first pressed projection 51.
Is also pressed. When the first pressed projection 51 is pressed, the first elastic arm 45a is elastically moved in a direction indicated by an arrow D in FIG. 6 with a connection point where the first arm portion 47 is connected to the support plate 46 as a fulcrum. Displaced, the first disk cartridge 1
The second positioning wall 42b is retracted to the lower surface side of the base plate 33 so that the second positioning wall 42b can be moved until it abuts against the first positioning wall 42a. At the same time, the second and third guide portions 35b and 35c are pressed by the bottom surface of the first disk cartridge 1a, and are substantially flush with the base plate 33 from the first position most protruding from the base plate 33. Is pressed to the third position. Also, the second pressed projection 55
6, the second elastic arm 45b is elastically displaced in the direction of arrow D in FIG. 6 by being pressed against the bottom surface of the first disk cartridge 1a, and the third positioning wall 42c is
3 to the lower surface side.

When the second disk cartridge 1b is inserted into the apparatus main body 31 through the cartridge slot 32, the guide groove 19 of the second disk cartridge 1b is formed.
The second guide portion 35b is engaged with the second disk cartridge 1b, and the second disk cartridge 1b is moved to a mounting position where the second disk cartridge 1b is abutted against the second positioning wall 42b. At this time, as shown in FIG. 7, the second guide portion 35b is pressed against the bottom surface forming the guide groove 19 of the second disk cartridge 1b, and the base plate 35b projects from the first position most protruding from the base plate 33. 3
The second pressed projection 55 is pressed to the second position slightly protruding from the third position, and at the same time, the second pressed projection 55 is also pressed. When the second pressed projection 55 is pressed, the second elastic arm 45b is pressed.
6, the first arm 52 is elastically displaced in a direction indicated by an arrow D in FIG. 6 with a connection point connected to the support plate 46 as a fulcrum.
Disk cartridge 1b is located in the second positioning wall 42b.
The third positioning wall 42c is retracted to the lower surface side of the base plate 33 so that the third positioning wall 42c can be moved until it is hit against the base plate 33. At the same time, the third guide portion 35c is pressed against the bottom surface of the second disk cartridge 1b,
It is pressed from the more protruding first position to a third position that is substantially flush with the base plate 33. Since the second disk cartridge 1b is smaller than the first disk cartridge 1a, the first guide portion 35a is not pressed by the second disk cartridge 1b, and the first guide portion 35a protrudes most from the base plate 33. And the first pressed projection 51 is also in the second disk cartridge 1a.
Is not pressed.

When the smallest third disk cartridge 1c is inserted into the apparatus main body 31 through the cartridge slot 32, the third guide portion 35c is engaged with the guide groove 19 of the third disk cartridge 1c. Then, the third disk cartridge 1c is moved to the mounting position where it is abutted against the third positioning wall 42c. Note that the first and second guide portions 35a and 35b are configured such that the third disk cartridge 1c is the first and second disk cartridges 1c.
a, 1b, the first and second pressed projections 51, 55 are not pressed by the third disk cartridge 1c and are at the first position protruding from the base plate 33 most. It is in a state where it is not pressed by the third disk cartridge 1c.

Further, the lid 13 of the first to third disk cartridges 1a to 1c inserted into the apparatus main body 31 through the cartridge insertion / removal opening 32 is rotated in the cartridge mounting portion 21 to record and / or record. Opening 12 for reproduction
An opening mechanism 57 for opening the opening is provided. As shown in FIGS. 3 and 6, the opening mechanism 57 includes first to third disk cartridges 1 a to 1 c on the base plate 33.
Is mounted, an opening 12 for recording and / or reproduction is provided.
The first to third rotation operation pins 58a to 58c that rotate to open the. When the first to third disk cartridges 1a to 1c are inserted into the apparatus main body 31, the first to third rotation operation pins 58a to 58c are engaged with the first to third disk cartridges 1a to 1c. It is provided at a position where it can engage with the mating piece 16.

The first rotation operation pin 58a is for rotating the lid 13 of the first disk cartridge 1a in the direction of arrow A in FIG. 3 to open the recording and / or reproduction opening 12. And are formed integrally with the base plate 33.

The second rotating operation pin 58b is for rotating the lid 13 of the second disk cartridge 1b in the direction of arrow A in FIG. 3 to open the recording and / or reproducing opening 12. The first elastic arm 64 is provided on the lower surface side of the base plate 33. As shown in FIG. 6, the first elastic arm 64 has an arm portion 65 integrally connected to a support plate 46 disposed on the front surface of the apparatus main body 31.
And a support piece 6 having a second rotation operation pin 58b formed on the distal end side of the arm 65 substantially orthogonal to the arm 65.
6 are formed substantially in an L-shape, and the base plate 33
Is disposed on the lower surface side. The arm portion 65 extends in a region corresponding to the other side edge portion substantially parallel to the insertion direction of the first disk cartridge 1a, and the first armature 65 is pressed against the bottom surface of the first disk cartridge 1a. The pressing projection 67 is formed so as to protrude toward the upper surface of the base plate 33. The support piece 66 has a second rotation operation pin 5.
8 b is formed so as to protrude above the base plate 33. When the first disk cartridge 1a is placed on the base plate 33, the first pressed projection 67 is pressed against the bottom surface of the first disk cartridge 1a,
The arm portion 65 is elastically displaced in the ED direction in FIG. 6, and the second rotation operation pin 58b is retracted to the lower surface side of the base plate 33 so that the first disk cartridge 1a can be mounted on the cartridge mounting portion 21. To

The third rotation operation pin 58c is for rotating the lid 13 of the third disk cartridge 1c in the direction of arrow A in FIG. 3 to open the recording and / or reproduction opening 12. The second elastic arm 59 is provided on the lower surface of the base plate 33. As shown in FIG. 6, the second elastic arm 59 has an arm portion 61 integrally connected to a support plate 46 disposed on the front surface of the apparatus main body 31.
And a support piece 6 having a third rotation operation pin 58c formed on the distal end side of the arm 61 substantially orthogonal to the arm 61.
2 are formed in a substantially L-shape.
Is disposed on the lower surface side. The arm portion 61 extends to a region corresponding to the other side edge substantially parallel to the insertion direction of the second disk cartridge 1a, and is pressed against the bottom surfaces of the first and second disk cartridges 1a and 1b. The second pressed projection 63 is formed so as to protrude toward the upper surface of the base plate 33. In addition, a third rotation operation pin 58 c is formed on the support piece 62 so as to protrude above the base plate 33. The second pressed projection 63 is formed on the base plate 3 by the first and second disk cartridges 1a and 1b.
3, the arm 61 is elastically displaced in the direction E in FIG. 6 by being pressed against the bottom surfaces of the first and second disk cartridges 1a and 1b. The first and second disk cartridges 1a and 1b can be mounted on the cartridge mounting portion 21 by retracting the 58c to the lower surface side of the base plate 33.

In the opening mechanism 57 described above, when the first disk cartridge 1 a is inserted into the apparatus main body 31 through the cartridge insertion / removal opening 32, the bottom surface of the first disk cartridge 1 a projects above the base plate 33. The first
And the second pressed projections 67 and 63 are pressed. Then
The first and second pressed projections 67 and 63 are
5, 61 and 61 are resiliently displaced in the direction of arrow E in FIG. 6, and the second and third rotating operation pins 58b and 58c are retracted to the lower surface side of the base plate 33. So that it can be attached to When the first disk cartridge 1a is mounted on the base plate 33, the first rotating operation pin 58a is engaged with the engaging piece 16 of the first disk cartridge 1a, and the first disk cartridge 1a is engaged. The lid 13a is rotated in the direction A in FIG. 3 to open the recording and / or reproducing opening 12.

When the second disk cartridge 1 b is inserted into the apparatus main body 31 through the cartridge insertion / removal opening 32, the second pressed projection having the bottom surface of the second disk cartridge 1 b protruding above the base plate 33. Press 63. Then, the second pressed projection 63 elastically displaces the arm portion 61 in the direction of arrow E in FIG. 6, retracts the third rotation operation pin 58 c to the lower surface side of the base plate 33, and causes the second disk cartridge 1b is ready to be mounted on the base plate 33. When the second disk cartridge 1b is mounted on the base plate 33, the second rotation operation pin 58b is engaged with the engagement piece 1 of the second disk cartridge 1b.
6, the cover 13 of the second disk cartridge 1b is rotated in the direction A in FIG. 3 to open the recording and / or reproduction opening 12. At this time, the first pressed projection 67 is not pressed when it is mounted on the base plate 33 because the second disk cartridge 1b is smaller than the first disk cartridge 1a. The second rotation operation pin 58b is in a state of protruding above the base plate 33, and can rotate the lid 13 of the second disk cartridge 1b.

When the third disk cartridge 1c is inserted into the apparatus main body 31 through the cartridge insertion / removal opening 32, the third rotation operation pin 58c is engaged with the engaging piece 16 of the third disk cartridge 1c. Then, the lid 13 of the third disk cartridge 1c is rotated in the direction A in FIG. 3 to open the recording and / or reproducing opening 12.
Note that, at this time, the second pressed projection 63 is such that the third disk cartridge 1c is in the second disk cartridge 1c.
b, it is not pressed when it is mounted on the base plate 33. Therefore, the third rotation operation pin 5
Reference numeral 8c protrudes above the base plate 33, and the cover 13 of the third disk cartridge 1c can be rotated.

As described above, the cartridge mounting section 2 on which the first to third disk cartridges 1a to 1c are mounted.
6, a disk rotation operation mechanism 22 for rotating the first to third hard disks 5a to 5c of the first to third disk cartridges 1a to 1c is provided. As shown in FIG. 6, the disk rotation operation mechanism 22 includes a spindle motor 71 serving as a drive source and a disk table 72 rotated by the spindle motor 71. The spindle motor 71 is attached to the lower surface of the base plate 33 with the spindle shaft 71a protruding from the upper surface of the base plate 33 on which the cartridge mounting portion 21 is formed. The disk table 72 is
This spindle shaft 71 is attached to the tip end side of the spindle shaft 71a.
It is attached so as to rotate integrally with a. Further, the disk table 72 is provided with a magnet for magnetically attracting the hub mechanism 6 and clamping the first to third hard disks 5a to 5c so as to rotate integrally with the disk table 72. In other words, the disk rotation operation mechanism 22 includes the first to third hard disks 5a.
5c can be rotated with the center of rotation coincident.
Then, the disk rotation operation mechanism 22 magnetically attracts the hub mechanism 6 so that the first to third hard disks 5a to 5c can rotate integrally with the disk table 72.

First to third hard disks 5a to 5c
As shown in FIG. 8, a magnetic head device 23 for recording or reproducing an information signal with respect to the
The head slider 74 has a rotating arm 75 for supporting the head slider 74 and a driving mechanism 76 for rotating the rotating arm 75.

The pivot arm 75 is supported in the middle by a support shaft 77 erected on the base plate 33, and the magnetic head 73 is mounted on the cartridge mounting portion 21 around the support shaft 77. 1st to 3rd disk cartridges 1a to
First to to operate over the radial direction of the third hard disk 5a~5c of 1c, it is rotated in the arrow G ₁ direction and the arrow G ₂ direction in FIG. 8. Then, the head slider 74
Is attached via a leaf spring (not shown) connected to the distal end side of the rotating arm 75. This leaf spring is formed so as to be elastically displaced in a direction approaching and separating from the signal recording surfaces of the first to third disk cartridges 1a to 1c clamped by the disk rotation operation mechanism 22.

A drive mechanism 76 for rotating the rotating arm 75 about the support shaft 77 and moving the magnetic head 73 in the radial direction of the first to third hard disks 5a to 5c.
Consists of a voice coil motor as shown in FIG.
A drive coil 78 is attached to the base end side of the rotating arm 75, and a magnet 79 is provided on the base plate 33 so as to face the drive coil 78. Drive mechanism 76
By the action of the drive current and the magnetic field to be supplied to the driving coil 78, the rotating arm 75 around the support shaft 77, it is rotated in the arrow G ₁ direction and the arrow G ₂ direction in FIG. 8. When the rotating arm 75 is rotated, the magnetic head 7 is rotated.
Reference numeral 3 denotes an operation for moving the inner and outer peripheries of the first to third hard disks 5a to 5c to scan recording tracks formed on the first to third hard disks 5a to 5c to record or reproduce information signals. Do.

When recording or reproducing an information signal, the magnetic head unit 73 causes the first to third magnetic heads to move by the levitation force generated by the air flow generated between the rotating first to third hard disks 5a to 5c. Of the hard disks 5a to 5c. At this time, the first
The floating amount from the third hard disk 5a has a variation of ± 100 μm so that the recording or reproduction of the information signal can be reliably performed on any of the hard disks.
It is set to be.

The magnetic head device 23 as described above has the structure shown in FIG.
As shown in FIG. 1, first to third hard disks 5a to 5a
As can be reliably recording or reproducing even information signal on any of the hard disk of c, the straight line connecting the support shaft 77 and the magnetic head 73 of the tangential line L ₁ and the rotary arm 75 of the recording track Tr Angle (Yaw angle) θ between L ₂ and θ
Is set to be 0 ° to 20 °. The setting of the angle (Yaw angle) θ between the tangent line L ₁ and the straight line L ₂ to be 0 ° to 20 ° depends on the rotation center O of the first to third hard disks 5a to 5c and the rotation of the magnetic head device 23. Moving arm 7
This can be performed by adjusting the distance between the support shaft 77, which is the center of rotation of the fifth shaft 5, and the distance between the support shaft 77 and the magnetic head unit 73. For example, when a first hard disk 5a having a diameter of 3.5 inches and a third hard disk 5c having a diameter of 1.8 inches are used, the first hard disk 5a is used.
The distance between the rotation center O of the third to fifth hard disks 5a to 5c and the support shaft 77, which is the rotation center of the rotation arm 75 constituting the magnetic head device 23, is about 60 mm. The Yaw angle θ can be set in the range of 0 ° to 20 ° by setting the distance between the Y-axis and the Y-axis to about 55 mm.

Incidentally, the cartridge mounting section 2 described above
As shown in FIGS. 5, 9, and 10, an identification mechanism 24 for identifying the type, ie, the size, of the mounted disk cartridge is provided in the apparatus 1. This identification mechanism 24
As shown in FIGS. 5 and 9, the cartridge insertion / removal opening 32
There are first to third detection switches 82 to 84 disposed on the base end side of the first to third opening / closing lids 26 to 28 for closing the cover. The first to third detection switches 82 to 84 are formed by pressing operation switches, and the first detection switch 82 is
The first opening / closing lid 2 is disposed on the base end side of the first opening / closing lid 26,
When the cartridge 6 is turned in the direction of arrow F in FIG. 5 that opens the cartridge insertion / ejection opening 32, it is pressed by the first opening / closing lid 26, and the second detection switch 83 is turned on the base end side of the second opening / closing lid 27. When the second opening / closing lid 27 is rotated in the direction of arrow F in FIG.
When pressed by the second opening / closing lid 27, the third detection switch 84 is disposed on the base end side of the third opening / closing lid 28, and the third opening / closing lid 28 opens the cartridge insertion / removal opening 32 in FIG. When it is turned in the direction of arrow F, it is pressed by the third opening / closing lid 28.

Further, as shown in FIG. 10, the identification mechanism 24 detects the on / off state of the first to third detection switches 82 to 84 and outputs a first indication indicating the size of the disk cartridge.
To an identification circuit 85 that generates a third identification signal.
The identification circuit 85 includes first to third detection switches 82 to 8
By detecting the on / off state of the disk cartridge 4, the disk cartridge mounted on the cartridge mounting unit 21 can be moved to the first through third positions.
The first to third identification signals indicating that the disc cartridge 1 is any of the disc cartridges 1a to 1c are generated.
To the third identification signal from the head moving operation mechanism 25 to be described later.
To the drive unit.

When the first disk cartridge 1a is inserted into the apparatus main body 31 through the cartridge slot 32,
The first to third opening / closing lids 26 to 28 are rotated in a direction indicated by an arrow F in FIG. Then, all of the first to third detection switches 82 to 84
Pressed by the first to third opening / closing lids 26 to 28 and turned on, the identification circuit 85 generates a first identification signal indicating that the first disk cartridge 1a has been inserted, and performs a head moving operation. It is supplied to the mechanism 25. Also, the second
Of the disk cartridge 1b
When the first opening / closing lid 26 is inserted into the apparatus main body 31,
With the cartridge insertion / removal opening 32 closed,
The second and third opening / closing lids 27 and 28 are turned in the direction of arrow F in FIG. Then, the second and third detection switches 8
3 and 84 are turned on by the second and third opening / closing lids 27 and 28. The identification circuit 85 is configured such that the first detection switch 82 is off, and the second and third detection switches 83, 84
Is turned on, a second identification signal indicating that the second disk cartridge 1b has been inserted is generated, and supplied to the head moving operation mechanism 25. In addition, the third
When the disk cartridge 1c is inserted into the apparatus main body 31 through the cartridge insertion / removal opening 32, the first and second opening / closing lids 26 and 27 are kept in a state where the cartridge insertion / removal opening 32 is closed. Is turned in the direction of arrow F in FIG. Then, the third detection switch 84 switches to the third
Is turned on by the opening / closing lid 28. Identification circuit 85
Means that the first and second detection switches 82 and 83 are off,
Detecting that the third detection switch 84 is ON, generates a third identification signal indicating that the third disk cartridge 1c has been inserted, and supplies the third identification signal to the head moving operation mechanism 25.

On the basis of the identification signal indicating the size of the disk cartridge from the identification mechanism 24 as described above, the magnetic head device 23 is moved to the first to third hard disks 5a to 5a.
As shown in FIGS. 8 and 11, the head moving operation mechanism 25 for moving the head to the initial position on the outer peripheral side of the first disk cartridge 5c is mounted on the cartridge mounting portion 21.
a to 1c are not mounted, the magnetic head device 2
When the first to third disk cartridges 1a to 1c are mounted on the cartridge mounting portion 21, the first to third hard disks 5a to 5a
5c over the initial position on the outer peripheral side of the magnetic head device 23
And a rotation restricting arm 92 for restricting a rotation area of the transfer arm 91.

The transfer arm 91 for transferring the magnetic head device 23 between the standby position and the initial position is supported on the support shaft 77 for supporting the rotating arm 75 constituting the magnetic head device 23 on the base end side. A head support portion 93 is formed at the tip of the head slider 74 to support the tip of the head slider 74 constituting the magnetic head device 23. Also, the transfer arm 91
On the tip side, the rotation restricting pin to prevent the rotation arm 75 rotates in the arrow G ₁ direction and the arrow G ₂ direction in FIG 11 is rotated 11 in the arrow G ₂ direction from the transfer arm 91 9
4 are planted. Further, a guide hole 95 is formed in the longitudinal direction of the transfer arm 91 so that the rotation restricting arm 92 rotates synchronously. In addition,
The transfer arm 91, details for carrying over the magnetic head device 23 in the standby position and the initial position by the omitted driving unit 96 is rotated in 11 arrow G ₁ direction and the arrow G ₂ direction. The drive unit 96 includes a drive motor and a plurality of gear trains for transmitting the drive force of the drive motor to the transfer arm 91. The drive section 96 is supplied with any one of the first to third identification signals indicating the size of the disk cartridge from the identification circuit 85 constituting the identification mechanism 24 described above, and controls the transport arm 91 based on the identification signal. Rotate.

The rotation restricting arm 92 for restricting the rotation area of the transfer arm 91 is rotatably supported at a midway by a support shaft 97 erected on the base plate 33. A transfer arm 91 is provided at one end of the rotation regulating arm 92.
An engagement protrusion 98 that engages with the guide hole 95 is formed. A base end of a rotation arm 75 that projects downward and forms the magnetic head device 23 is provided on the other end of the rotation control arm 92. A rotation restricting projection 9 which is in contact with and restricts the rotation of the rotation arm 75;
9 are formed.

The head moving mechanism 25 described above is
When the first disk cartridge 1a is mounted on the cartridge mounting section 21, the following operation is performed. That is, as shown in FIG. 8 and FIG. 11, the transfer arm 91 controls the magnetic head device 23 based on the first identification signal supplied to the drive unit 96 and indicating that the first disk cartridge 1a is mounted. From the standby position to the first hard disk 5a
Is transported to a first initial position, which is the outer peripheral side of. At this time, rotating the rotation restricting arm 92 also supporting shaft 97 in FIG. 11 the arrow H ₁ direction as a rotation fulcrum. In this state, the rotation restricting pin 94 of the transfer arm 91 is brought into contact with the head slider 74 during recording or reproduction with respect to the first hard disk 5a, thereby causing the magnetic head device 2 to rotate.
3 is prevented from excessively pivoting in Figure 11 in an arrow G ₂ direction, which is the outer circumferential side of the first hard disk 5a, rotation restricting protrusion 99 of the rotation restricting arm 92, to the first hard disk 5a When recording or reproduction is performed, the base end of the rotating arm 75 abuts on the magnetic head device 2.
3 is prevented from excessively pivoting in Figure 11 in an arrow G ₁ direction is the inner circumferential side of the first hard disk 5a.

When the second disk cartridge 1b is mounted on the cartridge mounting portion 21, the transfer arm 9
As shown in FIGS. 8 and 11, reference numeral 1 denotes a magnetic head device based on a second identification signal supplied to the drive unit 96 and indicating that the second disk cartridge 1b has been mounted.
3 is transported from the standby position to a second initial position on the outer peripheral side of the second hard disk 5b. At this time, the rotation restricting arm 92 also uses the support shaft 97 as the rotation fulcrum, and the arrow H
Rotate in _one direction. In this state, the transfer arm 91
When the recording or reproduction is performed on the second hard disk 5b, the rotation restricting pin 94 contacts the head slider 74 so that the magnetic head device 23 is on the outer peripheral side of the second hard disk 5b. prevents excessively rotated 11 in the arrow G ₂ direction, rotation restricting protrusion 99 of the rotation restricting arm 92, when performing recording or reproducing with respect to the second hard disk 5b, times by proximal end portion of the movement arm 75 abut, thereby preventing the magnetic head device 23 is too pivots 11 in an arrow G ₁ direction is the inner circumferential side of the second hard disk 5b.

When the third disk cartridge 1c is mounted on the cartridge mounting section 21, the transfer arm 9
As shown in FIGS. 8 and 11, reference numeral 1 denotes a magnetic head device based on a third identification signal supplied to the drive unit 96 and indicating that the third disk cartridge 1c has been mounted.
3 is transported from the standby position to a third initial position on the outer peripheral side of the third hard disk 5b. At this time, the rotation restricting arm 92 also uses the support shaft 97 as the rotation fulcrum, and the arrow H
Rotate in _one direction. In this state, the transfer arm 91
The rotation restricting pin 94 contacts the head slider 74 during recording or reproduction with respect to the third hard disk 5c, so that the magnetic head device 23 is on the outer peripheral side of the third hard disk 5c. prevents excessively rotated 11 in the arrow G ₂ direction, rotation restricting protrusion 99 of the rotation restricting arm 92, when performing a recording or reproducing for the third hard disk 5b, times by proximal end portion of the movement arm 75 abut, thereby preventing the magnetic head device 23 is too pivots 11 in an arrow G ₁ direction is the inner circumferential side of the third hard disk 5c.

In the recording / reproducing apparatus 20 described above, the first
In addition, the third to third disk cartridges 1 a to 1 c can be mounted on a single cartridge mounting portion 21 formed on the base plate 33. Hereinafter, the recording or reproducing operation of the first disk cartridge 1a will be described. When the first disk cartridge 1a is inserted through the cartridge slot 32 of the apparatus main body 31, the first disk cartridge 1a presses the first to third opening / closing lids 26 to 28, and the first to third opening / closing lids 26 to 28 are pressed. The opening / closing lids 26 to 28 are rotated about the support shaft 29 as a fulcrum in the arrow F direction in FIG.
At this time, all of the first to third detection switches 82 to 84 constituting the identification mechanism 24 are pressed by the first to third opening / closing lids 26 to 28 as shown in FIGS. And the identification circuit 85 generates a first identification signal indicating that the first disk cartridge 1a has been inserted, and supplies the first identification signal to the drive unit 96 of the head moving operation mechanism 25. .

When the first disk cartridge 1a is mounted on the cartridge mounting portion 21, the first guide portion 35a is engaged with the guide groove 19 of the first disk cartridge 1a, and the first disk Cartridge 1a
Is moved to the mounting position where it is abutted against the first positioning wall 42a. As shown in FIG. 7, the first guide portion 35a is provided in the guide groove 1 of the first disk cartridge 1a.
9 and from the first position most protruding from the base plate 33 to the second position slightly protruding from the base plate 33, and at the same time, the first pressed projection 51 is also pressed. . When the first pressed projection 51 is pressed, the first elastic arm 45a is moved to the first arm portion 4.
FIG. 6 shows a connection point connected to the support plate 46 as a fulcrum.
The second positioning wall 42b is elastically displaced in the direction of the middle arrow D, and the second positioning wall 42b is
3 to the lower surface side. At the same time, the second and third guide portions 35b and 35c are pressed by the bottom surface of the first disk cartridge 1a, and are substantially flush with the base plate 33 from the first position most protruding from the base plate 33. Is pressed to the third position. Second pressed projection 55
6, the second elastic arm 45b is elastically displaced in the direction of arrow D in FIG. 6 by being pressed against the bottom surface of the first disk cartridge 1a, and the third positioning wall 42c is
3 to the lower surface side.

The first disk cartridge 1a
Presses the first and second pressed projections 67 and 63 projecting above the base plate 33 constituting the opening mechanism 57 on the bottom surface. Then, the first and second pressed projections 67, 63
6, the arm portions 65 and 61 are elastically displaced in the direction of arrow E in FIG. 6, and the second and third rotation operation pins 58b and 58c are retracted to the lower surface side of the base plate 33, so that the first disk cartridge 1a is It is set to a state where it can be mounted on the base plate 33.
Then, the first disk cartridge 1a is
3, when mounted on the first rotating operation pin 58a,
The cover 13 of the first disk cartridge 1a is engaged with the engagement piece 16 of the first disk cartridge 1a, and is turned in the direction A in FIG. 3 to open the recording and / or reproduction opening 12. The opening 12 for recording and / or reproduction is opened, so that the magnetic head device 23 can enter the cartridge body 4a.

Then, as shown in FIGS. 8 and 11, the transfer arm 91 constituting the head moving operation mechanism 25 is provided with the first disk cartridge 1a supplied to the drive section 96.
The magnetic head device 23 is transported from the standby position to the first initial position on the outer peripheral side of the first hard disk 5a based on the first identification signal indicating that the first hard disk 5a is mounted. Thereafter, the first hard disk 5a clamped by the disk rotation operation mechanism 22 is rotated by driving the spindle motor 71. Then, the magnetic head device 23 at the first initial position causes the rotating arm 75 to move by the action of the drive current supplied to the drive coil 78 and the magnetic field.
The around the support shaft 77, is rotated in the arrow in FIG. 8 G ₁ direction and the arrow G ₂ direction. By rotating the rotating arm 75, the magnetic head unit 73 is moved and moved over the inner and outer peripheries of the first hard disk 5a, and scans the recording tracks formed on the first hard disk 5a to obtain information. Record or reproduce signals. When recording or reproducing the information signal, as shown in FIGS. 8 and 11, the rotation restricting pin 94 of the transport arm 91 constituting the head moving operation mechanism 25 is moved by the head slider 74 abutting. to prevent the magnetic head device 23 is too pivots 11 in an arrow G ₂ direction, which is the outer circumferential side of the first hard disk 5a, rotation restricting protrusion 99 of the rotation restricting arm 92, the first hard disk When recording or reproduction is being performed on the magnetic disk 5a, the magnetic head device 23 is positioned on the inner peripheral side of the first hard disk 5a by the arrow G _{1 in} FIG. To prevent excessive rotation in the direction.

When the second disk cartridge 1b is inserted through the cartridge slot 32 of the apparatus main body 31, the second disk cartridge 1b becomes
Of the second and third lids 2 and 3 are pressed.
The cartridges 7 and 28 are rotated about the support shaft 29 as a fulcrum in a direction indicated by an arrow F in FIG. At this time, the first opening / closing lid 26
Is urged by the urging member in the direction indicated by the arrow F in FIG. 5 without being pressed by the second disk cartridge 1b,
The cartridge insertion / removal port 32 is closed. Then, the second and third detection switches 83 and 84 constituting the identification mechanism 24 are turned on by the second and third opening / closing lids 27 and 28 as shown in FIG. Identification circuit 8
5 indicates that the first detection switch 82 is off and the second and third
That the detection switches 83 and 84 are on,
A second identification signal indicating that the second disk cartridge 1b has been inserted is generated and supplied to the drive unit 96 of the head moving operation mechanism 25.

When the second disk cartridge 1b is mounted on the cartridge mounting portion 21, the second guide portion 35b engages with the guide groove 19 of the second disk cartridge 1b, and the second disk Cartridge 1b
Is moved to the mounting position where it abuts against the second positioning wall 42b. At this time, as shown in FIG. 7, the second guide portion 35b is pressed against the bottom surface of the guide groove 19 of the second disk cartridge 1b, and
From the first position protruding from the base plate 33 to the second position slightly protruding from the base plate 33, the second pressed projection 55 is also pressed. When the second pressed projection 55 is pressed, the second elastic arm 45b is elastically moved in the direction of arrow D in FIG. 6 with the connection point where the first arm 52 is connected to the support plate 46 as a fulcrum. The third positioning wall 42c is retracted to the lower surface side of the base plate 33 so as to be displaced and move until the second disk cartridge 1b is abutted against the second positioning wall 42b. At the same time, the third guide portion 35c is
b, and is pressed from a first position that protrudes most from the base plate 33 to a third position that is substantially flush with the base plate 33. Note that the first guide portion 35a is
Since the second disk cartridge 1b is smaller than the first disk cartridge 1a, the base plate 33 is not pressed by the second disk cartridge 1b, and
The first projection 51 is located at a more protruding first position, and the first pressed projection 51 is not pressed by the second disk cartridge 1a.

The second disk cartridge 1b
Presses the second pressed projection 63 protruding above the base plate 33 on the bottom surface. Then, the second pressed protrusion 63
Moves the arm 61 elastically in the direction of arrow E in FIG.
The third rotation operation pin 58c is retracted to the lower surface side of the base plate 33, and the second disk cartridge 1b is
3 so that it can be mounted. When the second disk cartridge 1b is mounted on the base plate 33,
The second rotating operation pin 58b is engaged with the engaging piece 16 of the second disk cartridge 1b, and the lid 13 of the second disk cartridge 1b opens the recording and / or reproducing opening 12. 3, the opening 12 for recording and / or reproduction is opened, and the magnetic head device 23 is made to be able to enter the cartridge body 4b.

Then, as shown in FIGS. 8 and 11, the transfer arm 91 constituting the head moving operation mechanism 25 is moved to the second disk cartridge 1b supplied to the drive section 96.
The magnetic head device 23 is conveyed from the standby position to a second initial position on the outer peripheral side of the second hard disk 5b based on the second identification signal indicating that is mounted. Thereafter, the second hard disk 5b clamped by the disk rotation operation mechanism 22 is rotated by driving the spindle motor 71. Then, the magnetic head device 23 at the second initial position causes the rotating arm 75 to move by the action of the drive current supplied to the drive coil 78 and the magnetic field.
The around the support shaft 77, is rotated in the arrow in FIG. 8 G ₁ direction and the arrow G ₂ direction. When the rotating arm 75 is rotated, the magnetic head unit 73 is moved and moved over the inner and outer peripheries of the second hard disk 5b, and scans the recording tracks formed on the second hard disk 5b. Record or reproduce signals. When recording or reproducing the information signal, as shown in FIGS. 8 and 11, the rotation restricting pin 94 of the transport arm 91 constituting the head moving operation mechanism 25 is moved by the head slider 74 abutting. to prevent the magnetic head device 23 is too pivots 11 in an arrow G ₂ direction, which is the outer circumferential side of the second hard disk 5b, rotation restricting protrusion 99 of the rotation restricting arm 92, the second hard disk When the base end of the rotating arm 75 abuts during recording or reproduction with respect to the magnetic disk 5b, the magnetic head device 23 is positioned on the inner peripheral side of the second hard disk 5b as indicated by an arrow G _{1 in} FIG. To prevent excessive rotation in the direction.

When the third disk cartridge 1c is inserted through the cartridge insertion / removal opening 32 of the apparatus main body 31, the third disk cartridge 1c presses the third opening / closing cover 28, and the third opening / closing cover 28 5 is rotated about the support shaft 29 as a fulcrum in the direction of arrow F in FIG. At this time, the third detection switch 84 constituting the identification mechanism 24
Is turned on by the third opening / closing lid 28. The identification circuit 85 detects that the first and second detection switches 82 and 83 are off and the third detection switch 84 is on, and indicates that the third disk cartridge 1c has been inserted. Of the head moving operation mechanism 2
5 is supplied to the drive unit 96.

When the third disk cartridge 1c is mounted on the cartridge mounting portion 21, the third guide portion 35c is engaged with the guide groove 19 of the third disk cartridge 1c, and the third disk cartridge 1c is engaged. Cartridge 1c
Is moved to the mounting position where it abuts against the third positioning wall 42c. The first and second guide portions 35
a and 35b indicate that the third disk cartridge 1c is the first disk cartridge.
And is smaller than the second disk cartridges 1a and 1b, so that it is not pressed by the third disk cartridge 1c and is at the first position most protruding from the base plate 33. The pressing protrusions 51 and 55 are also not pressed by the third disk cartridge 1c.

The third rotating operation pin 58c constituting the opening mechanism 57 is engaged with the engaging piece 16 of the third disk cartridge 1c, and the third disk cartridge 1c
3 is rotated in the direction A in FIG. 3 to open the recording and / or reproducing opening 12, the recording and / or reproducing opening 12 is opened, and the magnetic head device 23 is inserted into the cartridge. The main body 4c is brought into a state where it can enter.

Then, as shown in FIGS. 8 and 11, the transfer arm 91 constituting the head moving operation mechanism 25 is moved to the third disk cartridge 1c supplied to the drive section 96.
The magnetic head device 23 is transported from the standby position to a third initial position on the outer peripheral side of the third hard disk 5c, based on the third identification signal indicating that is mounted. At this time, rotating the rotation restricting arm 92 also supporting shaft 97 in FIG. 11 the arrow H ₁ direction as a rotation fulcrum. Thereafter, the third hard disk 5c clamped by the disk rotation operation mechanism 22 is driven by the spindle motor 71,
Rotated. Then, the magnetic head device 23 at the third initial position moves the rotating arm 75 around the support shaft 77 by the action of the drive current supplied to the drive coil 78 and the magnetic field, and the arrow G _{1 in} FIG. It is rotated in a direction and the arrow G ₂ direction. By rotating the rotating arm 75, the magnetic head unit 73 is moved and moved over the inner and outer peripheries of the third hard disk 5c, and scans the recording tracks formed on the third hard disk 5c. Record or reproduce signals. When recording or reproducing information signals,
As shown in FIG. 8 and FIG.
The rotation restricting pin 94 of the transfer arm 91 constituting the magnetic head device 23 is brought into contact with the head slider 74.
There prevents too rotated 11 in the arrow G ₂ direction, which is the outer circumferential side of the third hard disk 5c, rotation restricting protrusion 99 of the rotation restricting arm 92, the third hard disk 5
When recording or reproduction is performed with respect to the magnetic head device 23, the base end of the rotating arm 75 abuts.
There prevents too rotated 11 in the arrow G ₁ direction is the inner circumferential side of the third hard disk 5c.

The above-described recording / reproducing apparatus 20 includes first to third disk cartridges 1a to 1a having different sizes.
c is mounted on the cartridge mounting portion 21, and the first to third hard disks 5 a to 5 c having different diameters are rotated using the single disk rotation operation mechanism 22 with the rotation centers coincident, and inserted into the apparatus main body 31. By rotating the magnetic head device 23 based on the identification result of the identification mechanism 24 for identifying the type of the disk cartridge to be recorded, the recording or reproduction of the information signal with respect to the first to third hard disks 5a to 5c is performed. It can be performed. Therefore, the recording / reproducing device 20 can be used for the first to third disk cartridges 1a to 1c used for various applications,
Convenience can be improved.

Although the recording / reproducing apparatus 20 to which the present invention has been applied has been described with reference to the drawings, the present invention relates to a recording medium such as an optical disk, a magneto-optical disk, or a flexible magnetic disk. The present invention can also be applied to a recording and / or reproducing apparatus for a disk cartridge used in the above. In the case of a recording and / or reproducing apparatus using an optical disk or a magneto-optical disk as a recording medium, an optical pickup device that moves in the radial direction of the disk may be provided on the base plate 33. Further, in the above example, the first hard disk 5a having a diameter of 3.5 inches in the disk-shaped recording medium, the second hard disk 5b having a diameter of 2.5 inches, and the third hard disk 5b having a diameter of 1.8 inches. Although the case of the hard disk 5c has been described, the disk-shaped recording medium is not limited to this, and is, for example, 3.5.
A disk-shaped recording medium having a diameter of 5.25 inches or larger than inches or a disk-shaped recording medium having a diameter of 1.8 inches or less may be used. When a disk-shaped recording medium having a diameter other than the above-described example is used, the cartridge main body that stores the disk-shaped recording medium is formed in a size such that the stored disk-shaped recording medium is inscribed.

[0071]

According to the recording and / or reproducing apparatus of the present invention, a plurality of disk cartridges having different sizes defined by the diameter of the disk-shaped recording medium are selectively mounted on the cartridge mounting portion. The rotation operation is performed with the center of rotation coincident with the disk rotation operation mechanism, and information signals can be recorded or reproduced on disk-shaped recording media having different diameters by a single recording and / or reproducing head. Therefore, the usage can be expanded and the convenience can be improved.

[Brief description of the drawings]

FIG. 1 is a top perspective view of a disk cartridge used in a recording / reproducing apparatus to which the present invention is applied.

FIG. 2 is a perspective view of the disc cartridge as viewed from below.

FIG. 3 is a plan view of the disk cartridge.

FIG. 4 is a sectional view of the disk cartridge.

FIG. 5 is a perspective view of a main part of the recording / reproducing apparatus to which the present invention is applied, viewed from the front side.

FIG. 6 is a perspective view of a cartridge mounting portion on which a disk cartridge is mounted.

FIG. 7 is a main part side view for explaining a guide mechanism of a disk cartridge provided in the cartridge mounting portion.

FIG. 8 is a plan view for explaining a disk rotation operation mechanism and a magnetic head device provided in the cartridge mounting portion.

FIG. 9 is a sectional view of an essential part for explaining an identification mechanism for identifying the size of a disk cartridge inserted into the apparatus main body.

FIG. 10 is a block diagram of an identification mechanism for identifying the size of a disk cartridge.

FIG. 11 is a perspective view for explaining a head moving operation mechanism for moving and operating the magnetic head device.

[Description of Reference Numerals] 1a to 1c First to third disk cartridges, 5
a to 5c first to third hard disks, 12 recording and / or reproducing openings, 13 lids, 19 guide grooves, 20 recording / reproducing apparatus, 21 cartridge mounting section,
22 disk rotation operation mechanism, 23 magnetic head device,
24 identification mechanism, 25 head moving operation mechanism, 26-2
8 First to third lids, 31 main body of device, 32 cartridge insertion / removal slot, 34 guide mechanism, 41 positioning mechanism, 42a to 42c first to third positioning walls, 44
Evacuation mechanism, 57 opening mechanism,

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Takashi Yamada, Inventor 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Michio Yotsuya 6-35, Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F term (reference) 5D046 AA11 CA16 CB02 GA02 GA15 5D068 AA01 BB01 CC12 EE04 EE13 GG03

Claims (7)

[Claims] A cartridge mounting section for rotatably storing a disk-shaped recording medium and selectively mounting a plurality of disk cartridges having different sizes defined by the diameter of the disk-shaped recording medium; A disk rotation operation mechanism for rotating a disk-shaped recording medium of a disk cartridge mounted on the cartridge mounting portion; and a disk-shaped recording medium moved in a radial direction of the disk-shaped recording medium mounted on the disk rotation operation mechanism. A recording and / or reproducing head for recording or reproducing an information signal with respect to an identification mechanism for identifying the size of the cartridge mounted on the cartridge mounting portion; and an identification result by the identification mechanism. The above record and / or
Or a head moving operation mechanism for moving a reproducing head to an initial position on the outer peripheral side of the disk-shaped recording medium. 2. The disk-shaped recording media having different diameters have substantially the same thickness.
A recording and / or reproducing apparatus as described in the above. 3. The recording and / or reproducing apparatus according to claim 1, wherein the disc cartridges having different sizes have substantially the same thickness. 4. The discrimination mechanism closes a cartridge insertion / removal opening formed in a size in which the largest cartridge can be inserted / removed, and is rotatable with respect to the cartridge insertion / removal opening according to the size of a disk cartridge to be inserted. A plurality of lids are disposed on the base end side of the lid, and one or more of the lids are rotated when the disc cartridge is inserted through the cartridge insertion opening. 2. The recording and / or reproducing apparatus according to claim 1, further comprising: a detecting unit that detects a size of the disk cartridge pressed by the rotated lid and inserted from the cartridge insertion / removal opening. 5. The cartridge mounting portion according to claim 1, wherein the cartridge mounting portion is provided with a guide portion which is engaged with a guide groove formed substantially in the same direction as the insertion / removal direction of the cartridge. Recording and / or playback device. 6. A positioning device which is provided for each of the differently sized disk cartridges to be mounted on the cartridge mounting portion, and the insertion end of the disk cartridge is abutted to position the mounting position of the disk cartridge. A wall, a pressing pin pressed against each of the different-sized disk cartridges, the positioning wall and the pressing pin are connected, and when one disk cartridge is mounted on the cartridge mounting portion, it corresponds to another cartridge. 2. The recording and / or reproducing apparatus according to claim 1, further comprising a positioning mechanism having the positioning wall formed by the above and an elastic arm for retracting the pressing pin. 7. A head moving operation mechanism, comprising: a moving arm for moving the recording and / or reproducing head to the initial position; and a moving arm for moving the recording and / or reproducing head in synchronization with the transport arm. Side abuts, and records and / or
2. The recording and / or reproducing apparatus according to claim 1, further comprising a regulating member for regulating a moving area of the reproducing head.