JP2001023330A - Disk cartridge and disk drive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to prevent that a second shutter part is pressurized by a shutter opening and closing detecting mechanism which detects that the second shutter part opens an opening part for recording and reproducing, etc., and is inclined inwardly by providing a reinforcing rib which prevents that the second shutter part of the shutter member which opens and closes the opening part for recording and reproducing in inclined inwardly. SOLUTION: An under half 3 which constitutes the under face of cartridge main body 4 is provided with an opening part 11 for driving the disk on approx. central part, an opening part 12 for recording and reproducing on an approx. circular front wall and the shutter member 13 which opens and closes the opening part 11 for driving the disk and the opening part 12 for recording and reproducing. The shutter member 13 has a base body 14 which constitutes a first shutter part which closes the opening part 11 for driving the disk and the second shutter part 15 which closes the opening part 12 for recording and reproducing. The reinforcing rib 23 which prevents that the second shutter part 15 is inclined toward inside surface is disposed on a base end part of the inside surface side of the second shutter part 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a shutter member for opening / closing a recording / reproducing opening of a cartridge body in which a disk-shaped recording medium is stored, wherein a second shutter of the shutter member opens the recording / reproducing opening. A disk cartridge that prevents the disk cartridge from being pressed and tilted inward by a shutter opening / closing detection mechanism or the like and a shutter member that opens the recording / reproducing opening of the disk cartridge, and inserts the disk cartridge into a disk-shaped recording medium. The present invention relates to a disk drive device which can be mounted on a cartridge mounting portion on which information signals are recorded and reproduced.

[0002]

2. Description of the Related Art Conventionally, a disk drive device using a disk cartridge as a recording medium has a cartridge mounting portion in which a disk cartridge is mounted in a main body of the device.
The apparatus includes a disk rotation operation mechanism for rotating a disk of the disk cartridge mounted on the cartridge mounting portion, a cartridge holder for holding the disk cartridge inserted from an insertion opening of the apparatus main body, and the like. Then, when the disk cartridge is inserted through the insertion opening of the apparatus main body, the disk cartridge is first held in the cartridge holder. At this time, the shutter member of the disk cartridge is operated by a shutter opening mechanism provided in the apparatus main body, and a disk driving opening for exposing a clamp part provided in the center of the disk to the outside and a recording / reproducing mechanism of the apparatus main body. Is rotated in a direction to open the recording / reproducing opening into which the recording medium enters. Next, when the disk cartridge held by the cartridge holder is mounted on the cartridge mounting portion, the disk rotation operating mechanism enters through the disk drive opening, clamps the disk with the clamp portion, and the recording / reproducing mechanism performs recording / reproducing. Into the cartridge body through the opening. The disk is rotated at a high speed by the disk rotation mechanism. At the same time, the recording / reproducing mechanism records and reproduces information signals on the disk by being moved over the inner and outer circumferences of the disk rotated by the disk rotating operation mechanism.

[0003]

Incidentally, in the disk cartridge, for example, when the engaging piece engaged with the shutter opening mechanism provided on the shutter member is broken or the engaging piece engages with the shutter opening mechanism. When the disk cartridge is mounted in the cartridge mounting portion with the shutter member not opening the disk driving opening and the recording / reproducing opening of the cartridge body as in the case where the disk cartridge is inserted into the cartridge holder without being inserted. There is. If the disk cartridge is mounted on the cartridge mounting portion with the shutter member not opening the disk driving opening and the recording / reproducing opening, the disk rotation operating mechanism and the recording / reproducing mechanism will operate the disk driving opening and the recording / reproducing. Collides with the shutter member that has closed the opening for
The disc rotation operation mechanism and the recording / reproducing mechanism were sometimes stained.

[0004] Some disk cartridges have very similar external shapes having different specifications, and a user may erroneously insert a disk cartridge having a different specification into a disk drive. . Also in this case, as described above, the shutter release mechanism does not engage with the engagement piece of the shutter member, and the disk cartridge is mounted in a state where the shutter member closes the disk drive opening and the recording / reproducing opening. Was sometimes attached to the part. Similarly, in this case, when the disk cartridge is mounted on the cartridge mounting portion with the shutter member closing the disk drive opening and the recording / reproducing opening of the cartridge body, the disk rotation operation mechanism and the recording / reproducing mechanism are disengaged. It collides with the shutter member that has closed the drive opening and the recording / reproducing opening,
The disc rotation operation mechanism and the recording / reproducing mechanism were sometimes stained.

That is, in the conventional disk drive device, when a disk cartridge is inserted into the disk drive device, a shutter opening / closing for detecting that the shutter member has opened the disk drive opening and the recording / reproducing opening. No detection mechanism was provided.

Therefore, the present invention detects that the second shutter portion of the shutter member for opening and closing the recording / reproducing opening of the cartridge body in which the disk-shaped recording medium is stored has opened the recording / reproducing opening. It is an object of the present invention to provide a disk cartridge that can be prevented from being pressed inward by a shutter open / close detection mechanism or the like and tilting inward.

Further, the present invention detects that the shutter member has opened the disk drive opening and the recording / reproducing opening of the cartridge body before the disk cartridge is mounted on the cartridge mounting portion. The shutter member is mounted on the cartridge mounting portion with the disk drive opening and the recording / reproducing opening closed, thereby preventing the disk rotation operating mechanism and the recording / reproducing mechanism from being stained by colliding with the shutter member. It is an object of the present invention to provide a disk drive device capable of performing the following.

[0008]

DISCLOSURE OF THE INVENTION In order to solve the above-described problems, a disk cartridge according to the present invention has a disk-shaped recording medium provided with a clamp portion for clamping to a rotary operating mechanism at a central portion. The disk-shaped recording medium is rotatably housed, and the front portion serving as the insertion end into the disk drive device is formed in a substantially arc shape with substantially the same curvature as the disk-shaped recording medium, and is formed at the substantially central portion on the lower surface side. A cartridge body having a disk drive opening for facing the clamp part outwardly formed, and a recording / reproducing opening for entry of recording / reproducing means formed in a part of the front surface, and a disk drive opening for opening and closing A first shutter portion, and a second shutter portion provided along a front surface portion of the cartridge main body for opening and closing the recording / reproducing opening portion, wherein a disk driving opening portion is provided in the cartridge main body. In a direction to open and close the recording reproducing apertures and a shutter member that is pivotally disposed. The second shutter portion is pressed by, for example, a shutter opening / closing detection mechanism that detects that the second shutter portion of the shutter member that opens / closes the recording / reproducing opening has opened the recording / reproducing opening. Reinforcing ribs are provided to prevent inward tilting. In addition, at the start end side when the shutter member of the recording / reproducing opening of the cartridge body opens the recording / reproducing opening, the second shutter portion is inclined inward together with the reinforcing rib of the second shutter portion. Is provided.

Further, in order to solve the above-mentioned problem, the disk drive device according to the present invention accommodates a disk-shaped recording medium having a clamp portion formed at a central portion, and has a clamp portion provided at a substantially central portion on a lower surface with an outward portion. The cartridge body has a disk drive opening formed therein, and a recording / reproducing opening in which a recording / reproducing mechanism enters at the front side which is the insertion side into the apparatus main body. A cartridge mounting portion for mounting a disk cartridge comprising a disk driving opening and a shutter member for opening a recording and reproducing opening, and a disk driving opening in the cartridge body when the disk cartridge is mounted on the cartridge mounting portion. A rotating operation mechanism that enters from the unit, clamps the disk-shaped recording medium with the clamp unit, and rotates the disk-shaped recording medium. A cartridge holder for holding a disk cartridge inserted into the apparatus main body, and a shutter opening mechanism for moving a shutter member in a direction to open the disk drive opening and the recording / reproducing opening when the disk cartridge is inserted into the cartridge holder. And a shutter open / close detection mechanism for detecting the opening / closing of a shutter member provided at a position facing the recording / reproducing opening of the disk cartridge inserted into the cartridge holder.
The shutter opening / closing detecting mechanism includes a shutter opening mechanism for opening a disk drive opening and a recording / reproducing opening by a shutter opening mechanism. When the disk cartridge is inserted into the cartridge holder, the cartridge body is moved from the recording / reproducing opening. To allow the disk cartridge to be mounted in the cartridge mounting portion. Also,
The shutter opening / closing detection mechanism is arranged such that, when the disk drive opening and the recording / reproducing opening are not opened by the shutter member, the shutter opening / closing detection mechanism contacts the shutter member closing the recording / reproducing opening. Therefore, the disc cartridge is prevented from being mounted on the cartridge mounting portion.

In this disk drive device, only when the shutter opening / closing detection mechanism enters the recording / reproducing opening, the cartridge holder in which the disk cartridge is completely inserted is moved to the cartridge mounting portion, and the disk cartridge is moved to the cartridge mounting portion. A holder moving operation mechanism to be mounted on the mounting section is provided.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a disk cartridge and a disk drive device to which the present invention is applied will be described with reference to the drawings. As shown in FIG. 1, a disk drive device to which the present invention is applied uses a disk cartridge 1 using a hard disk as a recording medium. As shown in FIG. 1, a disk cartridge 1 used in this disk drive device includes a cartridge body 4 in which a pair of upper and lower halves 2 and 3 are abutted and a peripheral portion is connected by a plurality of screws. A hard disk 5 on which signals are recorded is housed.

As shown in FIG. 2, the hard disk 5 housed in the cartridge body 4 has a disk body 6 formed by applying a magnetic layer or a protective layer to a hard disk substrate. A center hole (not shown) is formed in the disk main body 6, and a hub 7 constituting a clamp for a disk rotation operation mechanism of the disk drive device 41 is attached to the center hole. The hub 7 is attached to the disk body 6 so as to close the center hole of the disk body 6. The hub 7 is formed of a magnetic material such as metal, and is magnetically attracted by a magnet constituting a disk rotation operation mechanism. The hub 7 is provided with an insertion hole 8 at the center thereof, through which a spindle shaft of the disk rotation operation mechanism is inserted. In the hard disk 5 configured as described above, the spindle shaft of the disk rotation operation mechanism is inserted into the insertion hole 8 of the hub 7, and the hub 7 is magnetically attracted by a magnet, so that the disk is centered. It is rotated integrally with a disk table that constitutes a rotary operation mechanism.

As shown in FIGS. 1 and 2, the cartridge main body 4 in which the hard disk 5 is rotatably housed has upper and lower halves 2, 3 formed by injection molding of a synthetic resin or the like. The front wall 4a serving as an insertion end into the disk drive device is formed in a substantially arc shape so as to have substantially the same curvature as the outer shape of the hard disk 5. On the inner surfaces of the upper and lower halves 2 and 3, there are provided substantially arc-shaped partition walls 10 so as to inscribe the rising peripheral walls 2a and 3a constituting the outer peripheral wall of the cartridge body 4. When the halves 2 and 3 are butt-coupled, a hard disk 5 is rotatably housed to form a disk housing.

As shown in FIG. 2, a disk drive opening 11 into which a disk rotation operating mechanism of the disk drive device enters is formed substantially in the center of the lower half 3 constituting the lower surface of the cartridge body 4. Have been. The disk drive opening 11 is provided only in the lower half 3 and includes the cartridge body 4 formed by the upper half 2.
The central part on the upper surface side is closed. A recording / reproducing opening 12 into which a magnetic head device for recording / reproducing information signals with respect to the hard disk 5 enters is formed on a front wall 4a formed on a substantially arc-shaped surface of the cartridge body 4.
Are formed in a substantially rectangular shape. This recording / reproducing opening 1
Numeral 2 is formed in a size that can be operated over the inner and outer peripheries of the hard disk 5 of the magnetic head element attached to the tip of the magnetic head device that has entered the cartridge body 4.

A shutter member for opening and closing the disk drive opening 11 and the recording / reproducing opening 12 is provided in the cartridge body 4 having the disk driving opening 11 and the recording / reproducing opening 12 formed as described above. 13 are attached. As shown in FIGS. 2 and 3, the shutter member 16 closes the first opening 11 for driving the disk.
A shutter portion, a second shutter portion 15 for closing the recording / reproducing opening portion 12, and a shutter opening arm 16 for rotating the shutter member 13.
And a support arm 17 for pivotally supporting the shutter member 13.

The base portion 14 is formed in a substantially flat shape so as to slide on the lower surface of the cartridge body 4. And
Guide holes 19 are formed in the base portion 14 along the rotation direction of the shutter member 13. These guide holes 19, 19 are engaged with guide projections 21, 21 projecting from the inner surface of the lower half 3. And, in the base part 14,
At a substantially central portion between the guide holes 19, a first shutter portion 22 for closing the disk drive opening 11 is provided.
Is configured.

FIG. 3 shows the tip of the base portion 14.
As shown in FIG. 4, a second shutter 15 for closing the recording / reproducing opening 12 is formed. The second shutter portion 15 is formed at the tip end of the base portion 14 so as to stand in a substantially arc shape with substantially the same curvature as the front wall 4 a of the cartridge body 4, and is sufficient to close the recording / reproducing opening 12. It is formed in size. Then, the second shutter unit 15
It is located inside the front wall 4a and moves according to the guide groove 15a provided along the front wall 4a corresponding to the moving area of the second shutter portion 15. Further, a reinforcing rib 23 for preventing the second shutter portion 15 from tilting inward is provided at a base end portion on the inner surface side of the second shutter portion 15.
The reinforcing ribs 23 are provided between the base end on the inner surface side of the second shutter portion 15 and the base portion 14. The reinforcing rib 23 is provided, for example, so that the disk cartridge 1 is mounted on the cartridge mounting portion of the disk drive device.
3 is pressed by an open / close detection pin for detecting whether or not the second shutter 15 is opening the recording / reproducing opening 12 when the recording / reproducing opening 12 is closed. Even so, the second shutter section 15 is prevented from being tilted inward and damaged.

The tip of the second shutter 15 is
As shown in FIG. 6, when the recording / reproducing opening 12 is closed, it is supported by a reinforcing rib 24 provided on the inner surface of the lower half 3 constituting the lower surface of the cartridge body 4. The reinforcing ribs 24 are formed integrally with the bosses 24a through which the screws 9 are inserted when the upper and lower halves 2 and 3 are joined by the screws 9 toward the recording / reproducing opening 12 side. The reinforcing ribs 24 are used together with the reinforcing ribs 23 to detect open / close when, for example, the disk cartridge 1 is mounted on the cartridge mounting portion of the disk drive device with the shutter member 13 closing the recording / reproducing opening 12. The second shutter 15 is pressed by the pin.
Is prevented from tilting inward and being damaged.

As shown in FIGS. 2 and 3, the shutter opening arm 16 formed integrally with the base portion 14 is provided on one side wall 4b of the cartridge body 4 substantially parallel to the direction in which the disc cartridge 1 is inserted and removed. It is formed toward. An engagement piece 25 with which a shutter opening mechanism on the disk drive device side is engaged is formed at the tip of the shutter opening arm 16. The engaging piece 25 is attached to the cartridge body 4.
Of the rear wall 4c of the first side wall 4b.

A support arm 17 for pivotally supporting the shutter member 13 is integrally provided on the base end side of the base portion 14. The support arm 17 is provided with a shaft hole 27 at the tip. The shaft hole 27 is formed on the support shaft 2 erected on the inner surface of the lower half 3 in the vicinity of the rear wall 4 c of the cartridge body 4.
8 is inserted. Thus, the shutter member 13 is rotated about the support shaft 28 in the directions indicated by arrows A and A in FIG. 3 for opening and closing the disk drive opening 11 and the recording / reproducing opening 12. It is arranged in the cartridge body 4.

The shutter member 13 configured as described above
3, is biased by a torsion coil spring 29 in the direction of arrow A in FIG. 3 to close the recording / reproducing opening 12. The torsion coil spring 29 includes a base portion 29a
Is the cartridge body 4 without the hard disk 5
In the vicinity of the rear wall 4c, and is fitted to a support portion 30 provided integrally with the lower half 3. One arm 29b of the torsion coil spring 29 is connected to the cartridge body 4
And the other arm portion 29 c is locked near the shaft hole 27 of the support arm 17. The torsion coil spring 27 urges the shutter member 13 in a direction indicated by an arrow A in FIG. 3 to close the disk drive opening 11 and the recording / reproducing opening 12. Such a shutter member 1
Reference numeral 3 denotes a disk drive opening 11 and a recording / reproducing opening 12 that are opened only when the disk driving device is mounted on a cartridge mounting portion of the disk drive device. 12 is closed to prevent dust and the like from entering the cartridge body 4.

Positioning pins for positioning the mounting position when the disk cartridge 1 is mounted on the disk drive device are located near the two corners on the rear wall 4c side of the lower half 3 constituting the cartridge body 4. Positioning concave portions 31 and 32 to be combined are formed. One positioning recess 31 has a circular cross-section and functions as a reference portion, and the other positioning recess 32 is formed by a long hole so that the position of engagement with the positioning pin can be corrected. Further, an erroneous recording prevention hole 34 is formed in the rear side corner portion of the lower half 3 on the side where the positioning recess 32 is formed, and an erroneous recording prevention member 33 is disposed on the erroneous recording prevention hole 34. . The erroneous recording prevention member 33 includes an identification unit 35.
The discrimination mechanism on the side of the disk drive device has a recording position where the discrimination section 35 can record the information signal on the hard disk 5 by the erroneous recording prevention hole 34 and prohibits the recording of the information signal on the hard disk 5. By moving to the recording prohibition position, it is determined whether the disk cartridge 1 is in a recordable state or in a record-disabled state.

In the disk cartridge 1 constructed as described above, the shutter member 13 closes the disk drive opening 11 and the recording / reproducing opening 12 when not in use. The user can easily identify the direction of insertion into the disk drive device 41 because the front wall 4a side, which is the insertion end into the disk drive device, is formed in a substantially arc shape.

Then, as shown in FIG. 8, when the disk cartridge 1 is inserted from the insertion opening of the disk drive device with the front wall 4a of the cartridge body 4 as an insertion end, the shutter member 13 is moved as shown in FIG. Engagement piece 2
3 is engaged with the shutter opening mechanism of the disk drive device side, the engaging piece 25 moves to the rear wall 4c side of the cartridge main body 4 along the guide hole 26, and the arrow A in FIG.
To open the disk drive opening 11 and the recording / reproducing opening 12. Then, the shutter member 13 on the disk drive device side is moved to the disk drive opening 11.
When the open / close detection pin for detecting that the recording / reproducing opening 12 is opened enters the cartridge main body 4 through the recording / reproducing opening 12, the disk drive device
Detecting that the disk drive opening 11 and the recording / reproducing opening 12 are open, the disk cartridge 1
To the cartridge mounting part. When the disk cartridge 1 is mounted in the cartridge mounting portion, the disk rotation operation mechanism of the disk drive device enters through the disk drive opening 11, and the disk rotation operation mechanism connects the hub 7 to the disk rotation operation mechanism side. The hard disk 5 is clamped by magnetic attraction with a magnet.

The magnetic head device constituting the recording / reproducing means enters from the recording / reproducing opening 12. Then, the hard disk 5 housed in the cartridge body 4 is rotated in synchronization with the disk table by driving the drive motor of the disk rotation operation mechanism. At the same time, the magnetic head element provided at the tip of the magnetic head device is moved in the radial direction of the hard disk 5 to record or reproduce information signals.

Also, for example, when the engaging piece 25 engaged with the shutter opening mechanism of the disk drive device provided on the shutter member 13 is broken or without the engaging piece 25 engaging with the shutter opening mechanism. When the shutter member 13 does not open the disk driving opening 11 and the recording / reproducing opening 12 of the cartridge body 4 as in the case where the disk cartridge 1 is inserted into the cartridge holder of the disk drive device, the disk cartridge 1 is inserted into the cartridge. As shown in FIGS. 4 to 6, the second shutter 15 closing the recording / reproducing opening 12 formed in the front wall 4a of the cartridge main body 4 when the cartridge is mounted on the mounting portion 44, as shown in FIGS. Shutter open / close detection mechanism 7 on drive device side
The opening / closing detection projection 73 constituting 1 comes into contact. Therefore, the disk cartridge 1 is not mounted on the cartridge mounting portion of the disk drive device. At this time, the disk cartridge 1 side is the second shutter unit 1
5 is provided with a reinforcing rib 23, and the distal end of the second shutter portion 15 is supported by the reinforcing rib 24 on the cartridge body 4 side from the back side.
To prevent the second shutter portion 15 from being tilted inward and damaged.

As shown in FIG. 8, in the disk drive device 41 using the disk cartridge 1 as described above, the disk cartridge 1 is inserted / removed through an insertion / removal opening 43 provided on the front surface of the device main body 42. The device main body 42 constituting the disk drive device 41 is the same as that shown in FIG.
As shown in FIG. 10, a base 4 having a cartridge mounting portion 44 on which the disk cartridge 1 is mounted is configured.
5 and a cartridge holder 46 for holding the disk cartridge 1 mounted on the cartridge mounting section 44. The cartridge holder 46 holds the disc cartridge 1 when the disc cartridge 1 is inserted through the insertion / ejection opening 43, and then descends toward the base 45, thereby mounting the disc cartridge 1 in the cartridge mounting section 44.

As shown in FIG. 9, the base 45 has a disk rotation operating mechanism 47 for rotating the hard disk 5 constituting the disk cartridge 1 and a magnetic disk for recording or reproducing information signals on or from the hard disk 5. A head device 48 is provided.

As shown in FIG. 9, a disk rotation operating mechanism 47 for rotating the hard disk 5 of the disk cartridge 1 mounted on the cartridge mounting section 44 includes a disk table 49 for rotatably supporting the hard disk 5 by the hub 7. Have. The disk table 49 has a central portion attached to a spindle shaft 51 that is inserted into the insertion hole 8 of the hub 7, and a disk support portion 52 that supports the hard disk 5 is provided around the spindle shaft 51. A ring-shaped magnet for generating a uniform magnetic field around the spindle shaft 51 is provided on the inner peripheral side of the disk support portion 52 for magnetically attracting the hub 7 formed of a magnetic material. When the disk cartridge 1 is mounted on the cartridge mounting portion 44, the disk table 49 enters the cartridge main body 4 through the disk driving opening 11 formed on the lower surface of the cartridge main body 4, and magnetically attracts the hub 7. Hard disk 5 by
Is rotatably supported.

As shown in FIG. 9, the base 45 is provided with a magnetic head device 48 for recording or reproducing information signals on the hard disk 5 housed in the cartridge body 4. This magnetic head device 48
A rotating arm 55 that supports a head support arm 54 having a magnetic head element 53 integrally attached to the distal end side, and a voice coil motor 56 that rotates the rotating arm 55 is provided.

The pivot arm 55 is supported at a midpoint by a support shaft 57 erected on the base 45, and is turned around the support shaft 57 in the directions of the arrow R and the opposite arrow R in FIG. The head support arm 54 is attached to the distal end of the pivot arm 55 so as to be substantially perpendicular to the pivot arm 55 toward the cartridge mounting section 44. The head support arm 54 is formed so as to be elastically displaceable in a direction approaching and separating from the hard disk 5.

The voice coil motor 56 includes a rotating arm 5
5 includes a drive coil 58 attached to the base end side, and a magnetic circuit portion 59 including a magnet and a yoke disposed on the base 45 so as to face the drive coil 58. The voice coil motor 56 rotates the rotary arm 55 about the support shaft 57 in the directions indicated by arrows R and R in FIG. 9 by the action of the drive current supplied to the drive coil 58 and the magnetic field of the magnetic circuit section 59. Move. The magnetic head element 53 attached to the distal end of the head support arm 54 is moved over the inner and outer circumferences of the hard disk 5 by rotating the rotating arm 55 in the directions indicated by arrows R and R in FIG. .

As described above, the disk cartridge 1 loaded in the disk drive device is mounted on the base 45 in which the disk rotating mechanism 47 and the magnetic head device 48 are incorporated.
Is mounted. As shown in FIG. 10, the cartridge holder 46 includes a top plate 61 and holding portions 62 and 63 for holding both side edges of the disk cartridge 1.

The holding portions 62 and 63 constitute side walls of the cartridge holder 46 and have a substantially U-shaped cross section so that the disk cartridge 1 can be held.
Then, as shown in FIG. 9, on one holding portion 62 side,
When the disc cartridge 1 is inserted, a shutter opening mechanism 6 for rotating a shutter member 13 closing the disc driving opening 11 and the recording / reproducing opening 12.
4 are provided. The shutter opening mechanism 64 has an operation arm 65 disposed along the holding section 62.
The operation arm 65 is provided with a rotation operation portion 66 on one end side of the insertion side of the disc cartridge 1 on which the engagement piece 25 of the shutter member 13 is engaged.
A pressed portion 67 is provided on the other end, which is the inner side of the cartridge body 4, pressed against one side wall 4 b of the cartridge body 4 inserted into the cartridge holder 46. And the operation arm 6
Reference numeral 5 denotes a position substantially at the middle between the rotary operation part 66 and the pressed part 67, and stands on the holding part 62 side so that the rotary operation part 66 and the pressed part 67 approach and separate from the side wall 4 b of the cartridge body 4. It is rotatably supported by the support shaft 68 provided.

In the shutter opening mechanism 64 as described above,
When the disk cartridge 1 is inserted into the cartridge holder 46, the operation arm 65 is first pressed by the side wall 4 b of the disk cartridge 1 to press the pressed portion 67, and the rotation operation unit 66 approaches the side wall 4 b of the disk cartridge 1. Is rotated about the support shaft 68. When the disc cartridge 1 is further inserted, the operation arm 6
5 is engaged with the engagement piece 25 of the shutter member 13, and the engagement piece 25 is attached to the rear wall 4c of the cartridge body 4.
Move to the side. Then, as shown in FIGS. 3 and 7, the shutter member 13 is rotated in the direction indicated by the arrow A in FIG. 3 against the urging force of the torsion coil spring 29, and the disk drive opening 11 and the recording / reproducing opening are rotated. The part 12 is opened.

As shown in FIGS. 9 and 10, on the other holding portion 63 side of the recording / reproducing opening 12 side of the disc cartridge 1 held by the cartridge holder 46, as shown in FIGS.
A shutter opening / closing detection mechanism 71 for detecting whether or not the recording / reproducing opening 12 of the disk cartridge 1 held in the cartridge holder 46 is open is provided. This shutter opening / closing detection mechanism 71 is shown in FIGS.
As shown in (1), an opening / closing detection projection 73 attached via a mounting piece 72 to a magnetic head device 48 side of a slide member 77 constituting a holder moving operation mechanism 77 described later. As shown in FIG. 4, the open / close detection protrusion 73 is located at a position facing the recording / reproducing opening 12 of the disc cartridge 1 inserted into the cartridge holder 46, specifically, the shutter member 13 of the recording / reproducing opening 12. Is provided at a position facing the start end when the recording / reproducing opening 12 is opened.

The opening / closing detection projection 73 is provided when the recording / reproducing opening 12 of the disk cartridge 1 inserted into the cartridge holder 46 is open.
2 and enters the cartridge body 4. Then, the disc cartridge 1 is completely inserted into the cartridge holder 46. When the shutter member 13 is to be mounted with the recording / reproducing opening 12 closed,
As shown in FIGS. 4 to 6, the open / close detection protrusion 73 comes into contact with the second shutter portion 15 of the shutter member 13 and the disc cartridge 1 inserted into the cartridge holder 46.
Is not completely inserted into the cartridge holder 46.

As shown in FIGS. 9 to 12, the apparatus main body 42 has the cartridge holder 4 as described above.
6, when the disc cartridge 1 is completely inserted into
A holder moving operation mechanism 76 for moving the cartridge holder 46 in a direction approaching the base 45 so that the disc cartridge 1 is mounted on the cartridge mounting portion 44 is provided. The holder moving operation mechanism 76 includes a slide member 77 that moves the cartridge holder 46 between a non-mounting position where the disc cartridge 1 is inserted and removed and a mounting position where the disc cartridge 1 is mounted on the cartridge mounting portion 44, A control member 78 for controlling the movement of the member 77.

The slide member 77 is connected to the base 45 by the arrow D _{1 in} FIG.
Movably mounted on the direction and opposite to the arrow D ₁ direction. A plurality of guide holes 79 are formed in the slide member 77, and movement is guided by engaging guide pins 81 protruding from the base 454 in the guide holes 79.
The slide member 77 is biased in FIG. 9 is the insertion direction of the disk cartridge 1 in the arrow D ₁ direction by the coil spring 82. Further, both side walls 77a, 77a of the slide member 77 in the insertion / removal direction of the disc cartridge 1 are provided.
Are formed with cam portions 83, 83 for controlling the movement of the cartridge holder 46. As shown in FIGS. 11 and 12, the cam portions 83, 83
The horizontal portions 84, 84 for holding the cartridge at the non-mounting position and the inclined portions 85, 85 inclined toward the base 45 for moving the cartridge holder 46 to the mounting position are continuously formed. Guide projections 86, 86 projecting outward from the holding portions 62, 63 of the cartridge holder 46 disposed between the side walls 77a, 77a are formed on the cam portions 83, 83 as described above. It is engaged from inside. In addition, a substantially elliptical opening 80 whose major axis is the moving direction of the slide member 77 is formed at a substantially central portion of the bottom plate 77b constituting the slide member 77. The opening 80 is an escape hole for the disk rotation operation mechanism 47 provided in the cartridge mounting section 44, and is formed in accordance with the moving distance of the slide member 77.

As shown in FIGS. 9 and 10, the control member 78 for controlling the movement of the slide member 77 has, on one end side, a pressed projection 87 pressed against the front surface 4a of the disk cartridge 1. And a control projection 88 for controlling the movement of the slide member 77 on the other end side. 9 and 10 between the pressed projection 87 and the control projection 88, centering on a support shaft 89 erected on the base 45.
The middle arrow D ₂ direction and opposite to the arrow D ₂ direction are rotatably supported. The control member 78 has one end connected to the control member 7.
8 is locked to one end of the, in FIG. 9 is urged in the arrow D ₂ direction by a coil spring 91 the other end side is engaged with the slide member 77.

The pressed protrusions 87 are pressed against the front surface 4a of the disc cartridge 1, in a state where the control member 78 is pivoted to the most in FIG arrow D ₂ direction, the shutter member 1
3 is a disk drive opening 11 and a recording / reproducing opening 1
The opening / closing detection projection 73 for detecting the opening / closing of the shutter member 13 is not rotated in the opening direction of the second shutter portion 15.
Is positioned so as not to be pressed by the front surface portion 4a of the disk cartridge 1 when the disk cartridge 1 is brought into contact. That is, the pressed projection 87 is rotated in a direction in which the shutter member 13 opens the disk drive opening 11 and the recording / reproducing opening 12, and the opening / closing detection projection 73 is moved from the recording / reproducing opening 12 into the cartridge body 4. Is pressed by the front surface portion 4a of the disk cartridge 1 only when the disk cartridge 1 enters.

The control projection 88 for controlling the movement of the slide member 77 is engaged with a control opening 92 formed in the bottom plate 77b of the slide member 77, as shown in FIGS. The control opening 92 is provided with a locking portion 92a in which the control projection 88 is locked and a non-locking portion 92b in which the control projection 88 is not locked. Non-locking part 92
b is the insertion side of the disk cartridge 1 from the engaging portion 92a, i.e. in FIGS. 9 and 10 are formed toward the opposite to the arrow D ₁ direction. Then, the control projection 88 is moved to the locking portion 92
11A, the guide projections 86, 86 of the cartridge holder 46 are engaged with a horizontal portion 84 forming a cam portion 83 for holding the cartridge holder 46 at the non-mounting position, as shown in FIG. You. Further, when the control projection 88 is locked by the non-locking portion 92b, as shown in FIG.
Is engaged with an inclined portion 85 forming a cam portion 83 for holding the cartridge holder 46 at the mounting position.

The control member 78 is formed with a guide hole 78a for guiding the rotation operation, and a guide pin 78b planted on the base 45 is engaged with the guide hole 78a.

The holder moving operation mechanism 76 as described above
When the disc cartridge 1 is inserted into the cartridge holder 46, the following operation is performed. First, when the disc cartridge 1 is inserted into the cartridge holder 46, the shutter member 13 is rotated by the shutter opening mechanism 64, and the recording / reproducing opening 12 is opened, the opening / closing detection projection 73 constituting the shutter opening / closing detection mechanism 71 Enters the cartridge body 4 through the recording / reproducing opening 12, and the disk cartridge 1 is completely inserted and held in the cartridge holder 46. Then, the pressed projection 8 of the control member 78
7 is pressed to the front surface 4a of the cartridge body 4, the control member 78 is rotated in the arrow D ₂ direction in FIG. 10, the control projections 88, locking unit constituting the control opening 92 of the slide member 77 It is moved from 92a to the non-locking portion 92b. Accordingly, the slide member 77 is slid in the arrow D ₁ direction in FIG. 10 by the coil spring 82. At this time, the guide projections 86, 86 of the cartridge holder 46
As shown in FIGS. 1 and 12, a horizontal portion 84 forming a cam portion 83 for holding the cartridge holder 46 at the non-mounting position.
Is moved from the engaged state to the inclined portion 85 forming the cam portion 83 for holding the cartridge holder 46 at the mounting position, and the cartridge holder 46 is moved to the base 45 side. Thus, the disk cartridge 1 is mounted on the cartridge mounting section 44. The opening / closing detection projection 73 constituting the shutter opening / closing detection mechanism 71 is
7 By slid in the arrow D ₁ direction in FIG 10, it is retracted from the cartridge main body 4.

For example, when the disk cartridge 1 is in the state where the shutter member 13 closes the recording / reproducing opening 12 even though the disk cartridge 1 is inserted into the cartridge holder 46, the open / close detection protrusion 7
As shown in FIGS. 4 to 6 and 10, the disc cartridge 3 is in contact with the second shutter portion 13 of the shutter member 13, and the disc cartridge 1 inserted into the cartridge holder 46 is not completely inserted into the cartridge holder 46. Therefore, the pressed protrusion 87 of the control member 78 is not pressed by the front surface 4 a of the cartridge body 4, and the control protrusion 8 is not pressed.
8 remains locked by a locking portion 92a constituting the control opening 92 of the slide member 77, and the guide projections 86, 86 of the cartridge holder 46, as shown in FIG. It does not move to the inclined portion 85 that constitutes it. Therefore, the cartridge holder 46 remains separated from the base 45, and the disc cartridge 1 is not mounted on the cartridge mounting portion 44.

As shown in FIG. 8, the disk drive device 41 constructed as described above operates as follows when inserted through the insertion / removal opening 43 formed on the front surface of the device main body 42. That is, the disc cartridge 1 is inserted into the apparatus main body 42 with the front surface 4a of the cartridge main body 4 as the insertion side.
When the disc cartridge 1 is inserted into the cartridge holder 46, as shown in FIG.
At 3, both side edges are held. At the same time, the operation arm 65 that constitutes the shutter opening mechanism 64 first pushes the pressed portion 67 by the side wall 4 b of the disk cartridge 1, and the rotation operation portion 66
It is rotated about the support shaft 68 so as to be close to b. Then, when the disc cartridge 1 is further inserted, the rotating operation portion 66 of the operation arm 65 engages with the engagement piece 25 of the shutter member 13 and moves the engagement piece 25 toward the rear wall 4c of the cartridge body 4. Let it. Then, the shutter member 13
3 is turned in the direction of the arrow A in FIG. 3 against the urging force of the torsion coil spring 29 to open the disk drive opening 11 and the recording / reproducing opening 12.

When the disc cartridge 1 is further inserted into the cartridge holder 46, as shown in FIGS. 10 and 13, the opening / closing detecting projection 73 constituting the shutter opening / closing detecting mechanism 71 is moved from the recording / reproducing opening 12 to the cartridge main body 4 as shown in FIG. And the disk cartridge 1 is completely inserted and held in the cartridge holder 46. Then, the pressing projection 87 of the control member 78 is pressed to the front surface 4a of the cartridge body 4, the control member 78 is pivoted in 10 arrow D ₂ direction control projection 88, the slide member 7
7 is moved from the locking portion 92a constituting the control opening 92 to the non-locking portion 92b. Thereby, the slide member 77
It is slid in the arrow D ₁ direction in FIG. 10 by the coil spring 82. At this time, the guide projections 86 of the cartridge holder 46 are, as shown in FIGS.
The cartridge holder moves from a state in which it is engaged with a horizontal portion 84 that forms the cam portion 83 that holds the cartridge holder 46 at the non-mounting position to an inclined portion 85 that forms the cam portion 83 that holds the cartridge holder 46 at the mounting position. 46 is moved to the base 45 side. Thus, the disk cartridge 1 is mounted on the cartridge mounting section 44. Moreover, the opening and closing detecting protrusion 73 constituting the shutter opening and closing detection mechanism 71, the slide member 77 that slides in the arrow D ₁ direction in FIG 10, is retracted from the cartridge main body 4. That is, the opening / closing detection protrusion 73 constituting the shutter opening / closing detection mechanism 71 enters the cartridge main body 4 through the recording / reproducing opening 12, and thereby the holder moving operation mechanism 7.
6 inserts the cartridge holder 46 into the disk cartridge 1
The moving operation from the non-mounting position to the mounting position is enabled.

When the disk cartridge 1 is mounted on the cartridge mounting portion 44, the disk rotation operation mechanism 47 enters the disk drive opening 11 of the disk cartridge 1 and the disk rotation operation mechanism 47 connects the hub 7. The hard disk 5 is clamped by magnetic attraction using a magnet of the disk rotation operation mechanism 47. Further, the magnetic head device 48 is opened from the recording / reproducing opening 12.
Enters. When the hard disk 5 is rotated at a high speed by the disk rotation operation mechanism 47, an air flow is generated between the hard disk 5 and the magnetic head element 53, and the magnetic head element 53 is slightly tens of nm thicker than the hard disk 5. The magnetic head element 5
Reference numeral 3 denotes a moving operation in the radial direction of the hard disk 5 to record or reproduce information signals on the hard disk 5.

Further, for example, when the engaging piece 25 engaged with the shutter opening mechanism 64 provided on the shutter member 13 is broken, or when the engaging piece 25 does not When the shutter member 13 is inserted into the disk drive opening 11 and the recording / reproducing opening 1
There is a case where the disk cartridge 1 is mounted on the cartridge mounting portion 44 in a state where the disk cartridge 2 is not opened.
In addition, the user mistakenly inserts a disc cartridge having a different specification into the disc drive device, and the shutter member 13 causes the disc drive opening 1 of the cartridge body 4 to move.
There is a case where the disc cartridge 1 is mounted on the cartridge mounting portion 44 in a state where the opening 1 and the recording / reproducing opening 12 are not opened.

In this case, the opening / closing detecting projection 73 constituting the shutter opening / closing detecting mechanism 71 contacts the second shutter portion 15 of the shutter member 13 as shown in FIGS. The disk cartridge 1 inserted into the cartridge holder 46 is not completely inserted into the cartridge holder 46. Therefore, the pressed projection 87 of the control member 78 is not pressed by the front surface 4 a of the cartridge body 4, and the control projection 88 is locked by the locking portion 92 a forming the control opening 92 of the slide member 77. As a result, the guide projections 86 of the cartridge holder 46 do not move to the inclined portion 85 forming the cam portion 83, as shown in FIG. Therefore, the cartridge holder 46 remains separated from the base 45, and the disc cartridge 1 is not mounted on the cartridge mounting portion 44. Therefore, the disk rotation operation mechanism 47 does not collide with the first shutter portion 22 that constitutes the shutter member 13 that closes the disk drive opening 11 of the cartridge body 4, and
The second magnetic head device 48 constitutes the shutter member 13 that closes the recording / reproducing opening 12 of the cartridge body 4.
From colliding with the shutter section 15 of FIG. Therefore, the disk rotation operation mechanism 47 and the magnetic head device 48
Is prevented from being soiled.

The disk drive to which the present invention is applied can also be configured as follows. This disk drive device is the same as the disk drive device 4 described above.
1 and the shutter opening / closing detection mechanism 71 have almost the same configuration, and therefore the same members are denoted by the same reference numerals, and the details are omitted.

As shown in FIG. 14, the shutter opening / closing detection mechanism 102 of the disk drive device 101 includes a disk cartridge 1 held in a cartridge holder 46.
Is provided so as to face the recording / reproducing opening 12. The shutter opening / closing detection mechanism 102 includes an opening / closing detection unit 103 that detects whether the second shutter unit 15 that closes the recording / reproducing opening 12 of the shutter member 13 has opened the recording / reproducing opening 12. Have. As shown in FIGS. 15 and 16, the opening / closing detection unit 103 is configured such that the second shutter unit 15 of the shutter member 13
The cartridge holder 46 is provided at the back of the top plate 61 corresponding to the terminal end when the cartridge 2 is opened. The opening / closing detection unit 103 enters the cartridge main body 4 through the recording / reproducing opening 12 from the center side of the front surface 4a of the cartridge main body 4. For this reason, a concave portion 104 is formed at the tip of the opening / closing detection unit 103 so as to sandwich the outer peripheral edge of the hard disk 5 housed in the cartridge body 4 in order to prevent collision with the hard disk 5.

As shown in FIG. 16, when the recording / reproducing opening 12 of the disk cartridge 1 inserted into the cartridge holder 46 is open, the opening / closing detecting section 103 To enter. At this time, the tip of the opening / closing detection unit 103 is provided with the concave portion 104, thereby preventing collision with the outer peripheral edge of the hard disk 5 stored in the cartridge body 4. Then, the disc cartridge 1 is completely inserted into the cartridge holder 46. When the shutter member 13 is to be mounted with the recording / reproducing opening 12 closed, the opening / closing detection unit 103 operates as shown in FIG.
As shown in FIG. 7, the disc cartridge 1 which is in contact with the second shutter portion 15 of the shutter member 13 to be inserted into the cartridge holder 46 is prevented from being completely inserted into the cartridge holder 46. Since the opening / closing detection unit 103 of the shutter opening / closing detection mechanism 102 is provided corresponding to the terminal end when the second shutter unit 15 of the shutter member 13 opens the recording / reproducing opening 12, It can be detected that the recording / reproducing opening 12 is completely open.

The shutter opening / closing detecting mechanism 102 as described above
When the disk cartridge 1 is inserted into the cartridge holder 46, the disk drive device 101 having the following operation operates as follows. The disc cartridge 1 is inserted into the cartridge holder 46, the shutter member 13 is rotated by the shutter opening mechanism 64, and the recording / reproducing opening 12
Is completely opened, the opening / closing detection projection 73 constituting the shutter opening / closing detection mechanism 71 enters the cartridge main body 4 through the recording / reproducing opening 12 and the disk cartridge 1
Is completely inserted and held in the cartridge holder 46. Then, the cartridge holder 46 holding the disk cartridge 1 is moved to the holder moving operation mechanism 76 described above.
Is moved from the non-mounting position to the mounting position, and the disc cartridge 1 is mounted on the cartridge mounting portion 44 formed on the base 45. Thereafter, the disk rotation operation mechanism 47 enters from the disk drive opening 11 and clamps the hard disk 5.
Operates the hard disk 5 for rotation. Further, the magnetic head device 48 enters from the recording / reproducing opening 12, and the magnetic head device 48 moves the magnetic head element 53 over the inner and outer circumferences of the hard disk 5, and thereby the information is transmitted to the hard disk 5. Performs signal recording and playback.

In the case where the disk cartridge 1 is in a state in which the shutter member 13 closes or half-opens the recording / reproducing opening 12 even though the disk cartridge 1 is inserted into the cartridge holder 46, the open / close detection unit 103 is a shutter member 1 as shown in FIG.
The disc cartridge 1 that comes into contact with the second shutter section 15 and is inserted into the cartridge holder 46 is not completely inserted into the cartridge holder 46. Therefore, the pressed protrusion 87 of the control member 78 constituting the holder moving operation mechanism 76 by the front surface 4 a of the cartridge body 4 is not pressed by the front surface 4 a of the cartridge body 4. Therefore, the cartridge holder 46 is
5, the disk cartridge 1 is not mounted on the cartridge mounting portion 44.

The disk drive 101 as described above
Since the opening / closing detection unit 103 is provided corresponding to the end when the second shutter unit 15 of the shutter member 13 opens the recording / reproducing opening 12, the recording / reproducing opening 12 is completely The cartridge holder 46 can be moved to the mounting position by the holder moving operation mechanism 76 only when the cartridge holder 46 is opened. Even when the disk drive opening 11 and the recording / reproducing opening 12 are half-opened, the disk rotation operation mechanism 47 and the magnetic head device 48 do not enter the cartridge body 4. The head device 48 can be prevented from being soiled.

The disk drive to which the present invention has been applied has been described with reference to the drawings. However, the present invention is not limited to this. For example, the disk cartridge used in the present invention may be an optical disk or a magneto-optical disk in addition to a hard disk. When an optical disk is used as a recording medium, an optical pickup may be provided at a location facing the optical disk and as a recording / reproducing means, for example, at a base. When a magneto-optical disk is used as a recording medium, an optical pickup and a magnetic head may be arranged to face each other as recording / reproducing means.

[0058]

According to the disk drive of the present invention, since the second shutter portion is provided with the reinforcing rib for preventing the second shutter portion from inwardly tilting, the recording / reproducing opening of the cartridge main body is provided. It is possible to prevent the shutter member that opens and closes from being pressed inward by a shutter opening / closing detection mechanism that detects that the second shutter portion of the shutter member has opened the recording / reproducing opening portion and from being damaged inward.

According to the disk drive device of the present invention, the shutter opening / closing detecting mechanism is such that the shutter member opens the disk driving opening and the recording / reproducing opening by the shutter opening mechanism, and the disk cartridge is inserted into the cartridge holder. When it is inserted, it enters the cartridge main body through the recording / reproducing opening and permits the disk cartridge to be mounted on the cartridge mounting portion. Therefore, if the disk drive opening and the recording / reproducing opening are not opened by the shutter member, the shutter opening / closing detection mechanism comes into contact with the shutter member closing the recording / reproducing opening. Can be prevented from being mounted on the cartridge mounting portion. Therefore, it is possible to prevent the disk rotation operation mechanism and the recording / reproducing mechanism from coming into contact with the shutter member closing the disk driving opening or the recording / reproducing opening, and to prevent the disk from becoming dirty.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disk cartridge.

FIG. 2 is an exploded perspective view of the disk cartridge.

FIG. 3 is a plan view of a lower half provided with a shutter member.

FIG. 4 is a plan view of a main part near a recording / reproducing opening of a lower half.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a sectional view taken along line BB of FIG. 4;

FIG. 7 is a plan view showing a state where a shutter member opens a disk drive opening and a recording / reproducing opening.

FIG. 8 is a perspective view for explaining a use state of the disk cartridge.

FIG. 9 is a plan view of a disk drive device into which the disk cartridge is loaded.

FIG. 10 is a plan view of the disk drive device for explaining a holder moving operation mechanism for moving the cartridge holder.

FIG. 11 is a side view of the disk drive device before the disk cartridge is inserted into the cartridge holder.

FIG. 12 is a side view of the disk drive device when a disk cartridge is inserted into a cartridge holder.

FIG. 13 is a plan view showing a state where the disk cartridge is inserted into the cartridge holder.

FIG. 14 is a plan view of the disk drive device showing a state where the shutter member does not open the disk drive opening and the recording / reproducing opening when the disk cartridge is inserted into the cartridge holder.

FIG. 15 is a plan view of another example of the disk drive device.

FIG. 16 is a cross-sectional view of a main part showing a state where the opening / closing detection unit has entered the cartridge body.

FIG. 17 is a cross-sectional view of a main part in a state where the opening / closing detection unit is in contact with a shutter member closing a recording / reproducing opening.

[Explanation of symbols]

1 disk cartridge, 4 cartridge body, 5
Hard disk, 7 hub, 11 disk drive opening, 12 recording and reproducing opening, 13 shutter member, 1
4 Base part, 15 Second shutter part, 22 First shutter part, 23, 24 Reinforcement rib, 25 Engagement piece, 29
Torsion coil spring, 41 disk drive device, 44
Cartridge mounting part, 45 base, 46 cartridge holder, 47 disk rotation operation mechanism, 48 magnetic head device, 64 shutter opening mechanism, 71 shutter opening / closing detection mechanism, 73 opening / closing detection projection, 76 holder moving operation mechanism, 77 slide member, 78 control Member, 87
Pressed projection, 88 control projection, 92 control opening, 9
2a Locking portion, 92b Non-locking portion

Continued on the front page (72) Inventor Yotaro Sanada 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation (72) Inventor Kazuo Takahashi 6-35-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Stock In-company (72) Inventor Toshio Mamiya 6-35 Kita Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F-term (reference) 5D046 BA11 BA17 CB02 CC02 FA04 FA16 GA20 HA07 HA08

Claims (6)

[Claims] 1. A disk-shaped recording medium provided with a clamp portion for clamping to a rotation operation mechanism at a center portion, a disk-shaped recording medium rotatably stored therein, and an insertion end into a disk drive device. Is formed in a substantially arc shape having substantially the same curvature as the disk-shaped recording medium,
A cartridge body in which a disk drive opening for facing the clamp portion outwardly is formed at a substantially central portion on the lower surface side, and a recording / reproducing opening for recording / reproducing means to enter a part of the front surface portion is formed; A first shutter for opening and closing the disk drive opening, and a first shutter provided along a front surface of the cartridge body;
A second shutter for opening and closing the recording / reproducing opening; and a second shutter for opening / closing the disc driving opening and the recording / reproducing opening in the cartridge body. And a reinforcing member for preventing the second shutter portion from tilting inward. A second shutter portion that prevents the second shutter portion from tilting inward at a start end of the recording / reproducing opening of the cartridge body when the shutter member opens the recording / reproducing opening. 2. The disk cartridge according to claim 1, further comprising a reinforcing rib. 3. A disk-shaped recording medium having a clamp portion formed at the center is accommodated, and a disk drive opening is formed at a substantially central portion of the lower surface so that the clamp portion faces outward.
A cartridge main body having a recording / reproducing opening formed on a front portion on the insertion side into the apparatus main body, into which a recording / reproducing mechanism enters; the disk driving opening and the recording / reproducing only when the cartridge is loaded into the apparatus main body; A cartridge mounting portion for mounting a disk cartridge comprising a shutter member for opening a cartridge opening, and when the disk cartridge is mounted on the cartridge mounting portion, enters the cartridge main body from the disk driving opening, A rotation operating mechanism that clamps the disk-shaped recording medium with the clamp unit and rotates the disk-shaped recording medium; a cartridge holder that holds the disk cartridge inserted into the apparatus body; and the disk cartridge is the cartridge holder. When inserted into the A shutter opening mechanism for moving the shutter member in a direction to open the recording / reproducing opening; and a shutter member disposed at a position facing the recording / reproducing opening of the disk cartridge inserted into the cartridge holder. A shutter opening / closing detection mechanism for detecting the opening / closing of the disk. The shutter opening / closing detection mechanism is configured such that the shutter member opens the disk driving opening and the recording / reproducing opening by the shutter opening mechanism, and the disk cartridge A disk drive device which, when inserted into the cartridge holder, enters the cartridge body through the recording / reproducing opening to permit the disk cartridge to be mounted in the cartridge mounting portion. 4. The shutter opening / closing detection mechanism is provided so as to face a start end when the shutter member opens the recording / reproducing opening.
The disk drive device according to the above. 5. The shutter opening / closing detection mechanism is provided so as to correspond to a terminal end when the shutter member opens the recording / reproducing opening.
The disk drive device according to the above. 6. The apparatus moves the cartridge holder in which the disk cartridge is completely inserted toward the cartridge mounting section only when the shutter opening / closing detection mechanism enters the recording / reproducing opening. 4. The disk drive device according to claim 3, further comprising a holder moving operation mechanism for mounting said disk cartridge on said cartridge mounting portion.