JPH05242625A - Disk cartridge - Google Patents

Abstract

PURPOSE:To surely open and close an opening part provided on a disk cartridge main body for reading or writing a signal. CONSTITUTION:This is provided with a cartridge main body 5 forming opening parts 7 and 8 faced to upper and bottom surfaces for facing a part of a stored disk 6 to the outside along a radial direction and a shutter member 9 for opening and closing the opening parts 7 and 8 by being moved and operated against this cartridge main body 5. Then a notched part 29 which an operating member for moving and operating the shutter member 9 is to be engaged with is formed on the part of a front surface wall 21 corresponding to the front side surface of the cartridge main body 5 of this shutter member 9 and the operating member is engaged with the notched part 29 and thus, a sure engagement is realized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge containing a disk such as an optical disk or a magneto-optical disk, and more particularly to a shutter member for opening and closing a signal reading or signal writing opening provided in the cartridge body. The present invention relates to a part in which a cutout part with which a part of an operation member for moving the shutter member is engaged is formed.

[0002]

2. Description of the Related Art Conventionally, optical disks and magnetic disks used as signal recording media for recording and / or reproducing apparatus are
In order to protect the signal recording surface, the signal recording surface is housed in the cartridge body, and is mounted in the recording and / or reproducing apparatus as it is housed in the cartridge body.

A disc cartridge constructed by accommodating a disc in the cartridge body has a pickup device such as an optical pickup device for reading or writing an information signal when mounted on a recording and / or reproducing device. Opening portions facing each other are provided on both upper and lower surfaces so as to face each other. The opening is opened in the disc cartridge except when the disc cartridge is mounted in a recording and / or reproducing apparatus, and the opening is provided in order to prevent dust from adhering to or damaging the disc inside the cartridge body. A shutter member that closes the portion is movably provided.

The shutter member is formed by bending a thin metal plate into a U-shaped cross section so that it can be attached over the upper surface, lower surface and front side surface of the cartridge body. That is, the shutter member extends the upper shutter plate and the lower shutter plate that extend on the upper surface and the lower surface of the cartridge body and block the opening with the front side wall portion facing the front side surface of the cartridge body as a continuous portion. And is formed.

When the disk cartridge is mounted on the recording and / or reproducing apparatus, the shutter member is moved and operated by a shutter member moving operation mechanism provided on the recording and / or reproducing apparatus side, and the cartridge body is moved. Open the opening provided in.

[0006]

By the way, in the conventional shutter member of the disk cartridge, one side portion of the front side wall portion which connects the upper shutter plate and the lower shutter plate is recorded and / or reproduced. When the shutter member moving operation mechanism disposed on the apparatus side is pressed, the shutter member moving operation mechanism is moved with respect to the cartridge body, and the signal reading or signal writing opening provided in the cartridge body is opened.

As described above, in the shutter member in which one side portion of the front side wall portion in which the upper shutter plate and the lower shutter plate are connected in series is pressed and moved, the shutter member moving operation is performed. In some cases, it may not be possible to reliably bring the shutter member movement operation mechanism arranged on the recording and / or reproducing device side into contact with one side portion of the front side wall portion. That is, since the shutter opening / closing mechanism is only in contact with one side of the shutter member, there is a risk that the shutter opening / closing mechanism may easily come off during the mounting of the disc cartridge in the recording and / or reproducing apparatus. In particular, since the shutter member is moved and operated while the disc cartridge is inserted into the recording and / or reproducing apparatus, it is possible to maintain the contact state between the shutter opening / closing mechanism and one side portion of the shutter member. difficult. For example, if the disc cartridge swings during the insertion of the disc cartridge into the recording and / or reproducing apparatus, the relative contact between the shutter opening / closing mechanism and one side portion of the shutter member is easily disengaged.

Therefore, according to the present invention, a reliable movement operation of the shutter member for opening and closing the signal reading or signal writing opening provided in the cartridge main body is realized, and is surely performed by the mounting operation to the recording and / or reproducing apparatus. The object of the present invention is to provide a disk cartridge which enables the opening operation of the opening and further simplifies the moving operation mechanism of the shutter member arranged on the recording and / or reproducing apparatus side. Is.

[0009]

In order to achieve the above-mentioned object, a disk cartridge according to the present invention accommodates a disk rotatably and at least a part of the disk is radially outward. A cartridge main body having an opening for signal reading or signal writing facing the upper surface and the lower surface facing each other, and the cartridge main body are mounted over the upper surface, the lower surface and the front side surface, and are moved with respect to the cartridge main body. And a shutter member for opening and closing the opening, and a notch in which at least a part of an operation member for moving the shutter member engages with a part of a front wall of the shutter member corresponding to the front side surface of the cartridge body. Part is formed.

[0010]

When the disk cartridge according to the present invention is mounted on the recording and / or reproducing apparatus, at least a part of the operating member for moving the shutter member arranged on the recording and / or reproducing apparatus side is the shutter member. It engages with a notch provided in a part of the front wall. Then, with the operation member for moving the shutter member engaged with the notch, the disc cartridge is inserted into the recording and / or reproducing apparatus, or the operation member for moving the shutter member is moved. As a result, the shutter member is moved with respect to the cartridge body, and the opening provided in the cartridge body is opened.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of a disk cartridge according to the present invention will be described below with reference to the drawings. Configuration of disk cartridge (FIGS. 1, 2, 3, 4)
And FIG. 5) The disk cartridge 1 according to the present invention is shown in FIGS.
As shown in FIG. 1, an upper half 2 and a lower half 3 are formed by molding a synthetic resin, for example, and have a substantially flat plate-like rectangular shape.
A cartridge main body 5 formed by butting each other and engagingly fixed by a plurality of screws 4;
A disc-shaped disk 6 provided with signal recording surfaces on both sides rotatably accommodated therein, for example, a magneto-optical disk, and an upper half 2 and a lower half 3 constituting the cartridge body 5 are provided respectively. The cartridge body 5 for opening and closing the signal reading or signal writing openings 7 and 8 exposed by an optical pickup for writing an information signal to or reading the written information signal from the written disc 6.
The shutter member 9 is movably attached to the shutter member 9 as a main component, and is formed as a double-sided type.

An upper harness which constitutes the cartridge body 5
When the butt 2 and the lower half 3 are butt-engaged with each other, the write protection member 10 for prohibiting writing on the disk 6 is mounted in the opposite position so that the write protection member 10 is mounted in the same position. It is formed symmetrically except that it is provided in the. The upper half 2 and the lower half 3 are formed so as to form a space sufficient to rotatably accommodate the disk 6 when they are butt-joined to each other. -The edges of the hoop 2 and the lower half 3 are shown in FIG.
The left and right side wall portions 11, 11, the front side wall portion 12, and the rear side wall portion 1 of the cartridge 5 by butt-joining as shown in FIG.
The rising walls 11a, 11b, 12a, 12 constituting the third
b, 13a, 13b are formed.

Further, in the central portions of the upper half 2 and the lower half 3, the disc rotation drive provided on the recording and / or reproducing device side for rotating the disc 6 housed in the cartridge body 5 is performed. Disc table insertion holes 14 and 15 facing the disc table of the apparatus are formed, and the disc 6 is continuously connected to the disc table insertion holes 14 and 15.
14, after the disk table is inserted in the radial direction of
The signal reading or signal writing openings 7 and 8 facing the optical pickup having the same width as the diameter of 15 are provided. That is, the openings 7 and 8 are formed in a substantially rectangular shape from the central portion of the upper half 2 and the lower half 3 to the front side wall portion 12 to which the shutter member 9 is attached. The inner surfaces of the upper half 2 and the lower half 3 are butted against each other on a circle having a diameter slightly larger than the outer diameter of the disk 6 around the disk table insertion holes 14 and 15. A plurality of arcuate ribs 16 that form a position control wall that controls the horizontal position of the disc 6 and that form a disc storage portion are provided in a protruding manner.

Further, the disk cartridge 1 is recorded and recorded on both side corners on the rear side wall 13 side facing the front side wall 12 side where the shutter member 9 of the upper half 2 and the lower half 3 is attached. And / or when mounted on a reproducing device, the positioning pins provided on the device are fitted, and the positioning pins for positioning are positioned with respect to a predetermined position where the positioning pins are planted. It is provided in two places.

Then, the rear wall positions near the reference holes 17, 17 and 18, 18 provided in the upper half 2 and the lower half 3 and the rising walls of both corners on the front side where the shutter member 9 is mounted. 11a, 11b, 12a, 12b, 13
In the area surrounded by a and 13b and the arcuate rib 16, there are screw fixing portions 19, 19 and 19, 19 to which screws 4 for fixing the upper half 2 and the lower half 3 are screwed. One pair is provided for each.

As described above, the screw fastening portions 19, 19 and 1
The upper half 2 and the lower half 3 provided with 9, 19 accommodate the disk 6, and the screw fixing portions 19, 19 and 19, 19 are provided.
A cartridge body 5 that rotatably accommodates a disk 6 that is fixedly coupled by screwing a screw 4 into the is formed.

A shutter member 9 for opening and closing the openings 7 and 8 is slide-guided on the outer surface along the front side surface where the openings 7 and 8 of the upper half 2 and the lower half 3 are provided. A slide guide groove 20 is provided.

A shutter member 9 is slidably mounted on the upper and lower surfaces of the cartridge body 5 through the slide guide grooves 20 which are provided so as to face each other.
Is formed by bending a metal plate such as a stainless plate into a substantially U shape. That is, the shutter member 9 includes an upper shutter plate 22 and a lower plate which are upper plates sufficient to simultaneously cover the openings 7 and 8 and the disc table insertion holes 14 and 15 on the upper and lower sides of the front wall 21 serving as a connecting piece. The lower shutter plates 23, which are the same, are bent and formed so as to face each other. The shutter member 9 has the front wall 21 and the side of the front wall 21 where the upper shutter plate 22 and the lower shutter plate 23 are continuously connected, and the front wall 21.
It is a slide guide portion 24 for. The slide guide portion 24 further extends from one side of the upper shutter plate 22 and the lower shutter plate 23 in the slide guide groove 20 direction. Therefore, the shutter member 9 is formed to have a substantially L shape in plan view.

A guide piece 2 guided by engaging with the slide guide groove 20 formed by cutting and raising a part of the slide guide portion 24 of the shutter member 9 inward.
5, 25 are provided on the upper and lower surfaces so as to face each other. A ridge 26 formed by drawing is formed between the guide pieces 25, 25, and the slide guide 24 is formed longer than the width of the upper and lower shutter plates 22, 23. It is designed to prevent bending in the thickness direction caused by

A lock member 27 provided on the cartridge body 5 is provided at one end side of the front wall 21 of the shutter member 9 when the shutter member 9 is in the first position with the openings 7 and 8 closed. Bent part 2 for locking to be engaged with
8 is formed by cutting and raising. Further, the shutter member 9 is a shutter which is a protrusion provided so as to stand at the tip of a pair of shutter opening / closing arms which are operation members for moving the shutter member provided on the recording and / or reproducing apparatus side. Notch 29 with which the open / close pin is selectively engaged
Is provided from the front wall 21 to the lower shutter plate 23 as shown in FIG. That is, this notch 29
Is the area L extending from the front wall 21 to the lower shutter plate 23.
The shutter opening / closing pin provided in the shutter opening / closing arm is formed in a notch shape so as to be engaged with the disk cartridge 1 at right angles to the thickness direction of the disk cartridge 1.
The stump 29 is a position deviated from the center of the cartridge body 5 in the left-right direction when the shutter member 9 is located at the first position where the openings 7 and 8 and the disc table insertion holes 14 and 15 are closed. And is provided at a position facing the projection pressed portion 27c on the free end side of the lock member 27 provided at one corner on the front surface side of the cartridge body 5. In addition, the cutout portion 2 of the shutter member 9
At the other end of the front wall 21 facing the side where 9 is formed,
When the disc cartridge 1 is inserted, a shutter opening / closing pin that does not engage with the notch 29, which is not used for opening / closing the shutter member 9, can easily ride on the front wall 21 and escape. An inclined guide portion 30 bent to the side is provided.

The shutter member 9 formed as described above
Are attached from the respective upper surfaces of the upper and lower halves 2 and 3 of the cartridge main body 5 to the side of the front side wall portion 12, and the guide pieces 25,
25 is movably attached by being guided by the slide guide groove 24 of the cartridge body 5 with which 25 is engaged. On the side of the front side wall 12 of the cartridge body 5 to which the shutter member 9 is movably mounted, the shutter opening / closing arm is formed by locating a part of the front side wall 12 inside the cartridge body 5. There is provided a slide groove 31 on which the projection and the bent portion 28 for locking are slid.
Then, as shown in FIG. 2, the lower half 3 side portion of the slide groove 31 is provided for the shutter opening / closing pin escape so that a projection provided so as to stand on the shutter opening / closing arm can be inserted and moved. The cutout concave portion 32 is formed.
The notch recess 32 is formed with a depth sufficient to fit the shutter opening / closing pin so that the shutter opening / closing pin is embedded therein. When the shutter opening / closing pin enters the notch recess 32 through the notch 29, the front surface of the shutter member 9 is formed. Wall 2
It is designed so that a part thereof does not protrude from 1.

The openings 7 and 8 and the disk table insertion hole 1 formed on both upper and lower surfaces of the cartridge body 5 are also described.
The slide range of the shutter member 9 is extended to the one side of the openings 7 and 8 and the insertion holes 14 and 15, that is, the side where the slide guide portion 24 of the shutter member 9 does not project, including the peripheral edges of the shutter members 4 and 15. A recessed portion 33 that restricts is formed. The shutter member 9 has the concave portion 3
In the range of 3, between the first position where the openings 7 and 8 and the disk table insertion holes 14 and 15 are closed, and the second position where the openings 7 and 8 and the insertion holes 14 and 15 are opened. Moved and manipulated.

Furthermore, this disc cartridge 1
When the shutter member 9 is located at the first inner corner member on the front surface side of the upper half 2 as shown in FIG. 3, the shutter member 9 closes the openings 7 and 8 and the disk table insertion holes 14 and 15. A lock member 27, which is formed by molding a synthetic resin having a lock recess 35 for locking the shutter member 9, is attached to the locked bending member 28. The lock member 27 is a shutter member 9 formed in the middle of one side surface of the protrusion pressed portion 27c via an elastic displacement portion 27b curved in a semicircular shape from one side of the attachment base portion 27a to the upper half 3. A concave notch escape portion 37 through which the bent portion 28 is inserted when the shutter member 9 is moved is formed on one side surface located on the free end side of the lock concave portion 35 with which the bent portion 28 engages. There is.

The front side wall 12 of the cartridge body 5 has a recess 38 into which the shutter opening / closing pin provided on the other shutter opening / closing arm on the side where the shutter opening / closing pin does not engage the notch 29 of the shutter member 9. Is provided. The disc cartridge 1 is normally inserted into the concave portion 38, and the shutter member 9 is moved and operated by one of a pair of shutter opening / closing arms that are rotated by the disc cartridge 1 so that the opening 7,
When the shutter opening / closing pin 8 is moved to the open position, the shutter opening / closing pin erected in the other shutter opening / closing arm that does not contribute to the operation of moving the shutter member 9 is provided. That is, in the recess 38, as shown in FIG. 5, the shutter member 9 is operated by one shutter opening / closing arm, so that the opening 7, 8 and the disc table insertion hole 1 are formed.
The shutter opening / closing pin of the shutter opening / closing arm is provided at a position facing outward when reaching the second position where the shutters 4, 15 are opened, and is formed by cutting out a part of the upper half 2 on the front side wall 12 side. It is provided so as to be inserted perpendicularly to the thickness direction of the disk cartridge 1, and is formed to a depth that does not project from the cartridge body 5 when the shutter opening / closing pin is inserted.

Configuration on the recording and / or reproducing device side (FIG. 6,
7 and 8) Next, a specific example of a recording and / or reproducing apparatus to which the disc cartridge 1 according to the present invention configured as described above is applied will be described. In the recording and / or reproducing apparatus, although not shown, a height positioning pin and a disk for engaging with reference holes 17, 17 or 18, 18 provided in the disk cartridge 1 to position the mounting position of the disk cartridge 1 A disk mounting portion 41 is provided which is provided with support pins for supporting the flat surface of the cartridge 1 and is mounted with the disk cartridge 1 being positioned in the horizontal direction and the height direction. In addition, as shown in FIG.
A disk table 42 for rotationally driving the internal disk 6
A disk rotation driving device 43, and the disk 6 is mounted on the disk table 4 so that the disk 6 can be integrally rotated in synchronization with the disk table 42.
A chucking device or the like (not shown) that is sandwiched between the two is provided. Further, the disc cartridge 1 mounted on the disc mounting portion 41 is disposed so as to face the lower surface side of the disc cartridge 1 and is moved over the inner and outer circumferences of the disc 6 in the radial direction, and an information signal is recorded on the signal recording surface of the disc 6. Is provided and an optical pickup device 44 for reading the written information signal is provided.

A cartridge support frame 45 for supporting the disc cartridge 1 inserted through the disc insertion / removal opening provided in the outer casing constituting the main body of the apparatus is arranged in the disc mounting portion 41 formed in the apparatus. Is set up. The cartridge supporting frame 45 is disposed so as to be vertically movable and supported on a chassis in which mechanical parts such as the disk rotation driving device 43 and the pickup device 44 are provided. The cartridge support frame 45 thus arranged is formed in a flat plate shape having substantially the same width as that of the disc cartridge 1, and has a U-shaped cross section in which both sides of the disc cartridge 1 are inserted and supported on both sides. The parts 46 and 47 are provided so as to face each other. The front side of the cartridge support frame 45 is formed with an opening 48 for receiving the disc cartridge 1.
The cartridge support frame 45 is supported with the opening 48 facing the disc insertion / ejection opening when the disc cartridge 1 is inserted and removed, and the disc cartridge 1 is mounted on the positioning pin and the support pin when the disc cartridge 1 is mounted. It is mounted movably up and down on the chassis so that it can be supported in the lowered position.

Then, the cartridge supporting frame 4
5, a pair of first and second shutter opening / closing arms 51 and 52 are provided on the inner side facing the receiving opening 48 of the disc cartridge 1, facing the insertion direction of the disc cartridge 1. The first and second shutter opening / closing arms 51 and 52 are cylindrical shaft insertion portions 55 that are inserted into support shafts 53 and 54 that are erected on both inner sides of the cartridge support frame 45 at their base ends. , 56, and first and second shutter opening / closing pins 57, 58, which are selectively engaged with the notches 29 provided in the shutter member 9 of the disk cartridge 1, are set up at the tips thereof.
The lengths from the shaft insertion portions 55 and 56 to the first and second opening / closing pins 57 and 58 are formed to be the same.

The spindles 53 and 54 are the disk rotation drive device 43 which is the insertion center of the disk cartridge 1.
It is erected in a symmetrical position about the center of rotation. The first and second shutter opening / closing arms 5 are
1, 52 are the first and second shutter opening / closing pins 57, 5
8 are projected in opposite directions, the shaft insertion portions 55 and 56 are inserted into the support shafts 53 and 54, and are rotatably attached. In this way, the pair of first and second shutter opening / closing arms 5 having the same length attached via the support shafts 53 and 54 symmetrical about the insertion center of the disc cartridge 1
1, 52 are attached symmetrically around the insertion center of the disc cartridge 1.

When the first and second shutter opening / closing arms 51 and 52 are rotated to the opposite sides about the support shafts 53 and 54, the first and second shutter opening / closing arms 51 and 52 are planted at the tips in the middle of the rotation. The first and second shutter opening / closing pins 57,
The turning loci of 58 are formed to have an overlapping length.

Further, the first and second shutter opening / closing arms 51, 52 do not contact the opening / closing arms 51, 52 with the disk cartridge 1 when the disk cartridge 1 is inserted. Since the shutter opening / closing pins 57, 58 are adapted to engage with the notches 29 of the shutter member 9, they are attached to the support shafts 53, 54 at intervals larger than the thickness of the disc cartridge 1 in the height direction.

Further, the first and second shutter opening / closing pins 57 and 58 are formed with a length sufficient to engage with the notch 29 provided in the shutter member 9 of the disk cartridge 1 to be inserted. Then, as shown in FIG. 8, the first and second shutter opening / closing pins 57 and 58 are rotated when the first and second shutter opening / closing arms 51 and 52 are simultaneously rotated on the same plane of the disk cartridge 1. , The first and second shutter opening / closing pins 57, 58
Are formed with heights that cannot abut at the overlapping positions of the rotation loci.

The first and second shutter opening / closing arms 51, 52 mounted as described above are provided with spring members projecting from the shaft insertion portions 55, 56 so as to be substantially orthogonal to the shutter opening / closing arms 51, 52. A tension spring 60 stretched between the stop shafts 59, 59 urges the cartridge support frame 45 outwardly on both sides of the cartridge support frame 45 in a direction away from each other. Then, the first shutter opening / closing arm 51 directs the upper surface of the disc cartridge 1 to the upper side, and
When the signal recording surface is inserted into the optical pickup device 44 so as to face the first pickup opening / closing pin 57, the first shutter opening / closing pin 57 set up at the tip end is positioned so as to face the notch 29 of the shutter member 9. The arm biasing piece 61 regulates the rotationally biased position. Further, the second shutter opening / closing arm 52 is set up at the tip end when the second signal recording surface of the disc 6 is inserted with the lower surface of the disc cartridge 1 facing upward and facing the optical pickup device.
The shutter opening / closing pin 58 of the shutter member 9
The second arm regulating piece 6 so as to be located at a position facing the
The rotation biasing position is restricted by 2.

At a position on both inner sides of the cartridge support frame 45 and close to the first and second arm regulating pieces 61, 62, a pair of disc cartridge 1 regulating positions is inserted. Disc cartridge insertion regulation protrusions 63, 63 are planted. The disc cartridge 1 has the insertion regulation protrusions 63, 63.
The first or second by being inserted until it comes into contact with
The shutter member 9 is moved from the first position to the second position by the shutter opening / closing arms 51 and 52, and the signal reading or signal writing openings 7 and 8 are completely opened.

Further, a pair of first and second shutter opening / closing arms which are pressed and rotated by the inserted disk cartridge 1 are provided on the inner side of the disk mounting portion 41 facing the insertion direction of the disk cartridge 1. 51,5
The second or first shutter opening / closing pin 58 or 57 provided on the other shutter opening / closing arm 52 or 51 that does not contribute to the movement operation of the shutter member 9 among the two does not enter the recess 38 of the cartridge body 5 and When the cartridge 5 is rotated while protruding onto the front side wall portion 12 or the rear side wall portion 13, the second or first shutter opening / closing pin 58 or 57 collides with each other to open / close the first or second shutter. A stopper 64 is provided which prevents the arms 51 and 52 from rotating and restricts the mounting of the disc cartridge 1 at a predetermined insertion position.

Opening operation of the openings 7 and 8 provided in the disc cartridge 1 Next, the opening 7 and 8 by the shutter opening / closing mechanism having the pair of first and second shutter opening / closing arms 51 and 52 configured as described above. The opening operation of No. 8 will be described.

Opening operation of the openings 7 and 8 when the disk cartridge 1 is inserted with the first surface of the disk 6 facing the optical pickup device (see FIGS. 6, 7, 9 and 10) As shown in FIG. 6, when the optical pickup device is opposed to the first signal recording surface of the disc 6 with the upper surface of the disc cartridge 1 facing upward, and the disc cartridge 1 is inserted from the disc insertion / removal opening, as shown in FIG. And FIG.
As shown in FIG. 2, the first shutter opening / closing pin 57 at the tip of the first shutter opening / closing arm 51 is provided with the cutout portion 2 of the shutter member 9.
Engage 9. At this time, the first shutter opening / closing pin 57 is locked by the lock member 27 provided in the cartridge body 5.
By pressing the pressed portion 27c of the lock member 27 to displace the lock member 27, the bent portion 28 for locking is locked by the lock member 2
When the shutter member 9 is disengaged from the lock concave portion 35 of the shutter 7, the shutter member 9 becomes slidable.

On the other hand, a second shutter opening / closing pin 58 at the tip of the second shutter opening / closing arm 52 rides on an inclined guide portion 30 formed at the other end of the shutter member 9, and the second shutter opening / closing arm 52 is Before the first shutter opening / closing arm 51, it is rotated in the direction of arrow A in FIG. 7 against the biasing force of the tension spring 60. That is, the second shutter opening / closing arm 52 is the same as the first shutter opening / closing arm 51.
The first shutter opening / closing pin 57 on the side is pivoted in advance by the amount of engagement with the notch 29. When the disc cartridge 1 is further inserted in this state, the disc shutter 1 is pressed by the first shutter opening / closing arm 51.
Also starts rotating in the direction of arrow B in FIG. 7 against the biasing force of the tension spring 60. At this time, the cutout portion 2 of the shutter member 9
Since the first shutter opening / closing pin 57 is engaged with 9 and the shutter member 9 is unlocked,
When the first shutter opening / closing arm 51 is rotated, the shutter member 9 is moved from the first position where the openings 7 and 8 of the disk cartridge 1 and the disk table insertion holes 14 and 15 are closed to the openings 7 and 8. 8 and the disc table insertion holes 14 and 15 are opened to the second position side. Then, when the disk cartridge 1 is further inserted and is inserted until it abuts on the insertion restricting protrusions 63, 63, the shutter member 9 moves to the first shutter opening / closing arm 51.
Completely move to the second position by the above, and as shown in FIG.
Open 4,15.

On the other hand, the second shutter opening / closing arm 52 rotated prior to the first shutter opening / closing arm 51 slides the shutter opening / closing pin 58 on the front wall 21 from the tilt guide portion 30 of the shutter member 9. While being rotated, the shutter member 9 is moved to a second position where the openings 7 and 8 and the disc table insertion holes 14 and 15 are opened, and the cartridge body covered by the shutter member 9 is moved. 5 into the recess 38.

That is, when the disk cartridge 1 is normally inserted and the shutter member 9 completely opens the openings 7 and 8 and the disk table insertion holes 14 and 15,
The shutter opening / closing pin 58 of the second shutter opening / closing arm 52 that does not contribute to the movement operation of the shutter member 9 enters the recess 38 without colliding with the stopper 64, and the disc cartridge 1 has the insertion restricting protrusions 63, 63.
Is inserted up to a position where it abuts on and the first and second shutter opening / closing arms 51 and 52 are rotated to be mounted up to a predetermined insertion mounting position.

When the disc cartridge 1 is mounted up to the predetermined mounting position, the cartridge support frame 45 for supporting the disc cartridge 1 becomes
Disk rotation drive device 43, pickup device 44
The disk 6 is lowered to the side, and the disk 6 is clamped and supported on the disk table 42 so that the disk 6 can be rotated.

Operation of opening the openings 7 and 8 when the disc cartridge 1 is inserted with the second surface of the disc 6 facing the optical pickup device. When the disc cartridge 1 is inserted with the surface 2 facing the optical pickup device, the second shutter opening / closing operation is the reverse of the case where the first surface of the disc 6 faces the optical pickup device. Arm 52
The second shutter opening / closing pickup 58 at the tip engages with the notch 29 of the shutter member 9, and the first shutter opening / closing pin 57 at the tip of the first shutter opening / closing arm 51 forms an inclination formed at the other end of the shutter member 9. It is in a state of getting on the guide portion 30. Then, the first shutter opening / closing arm 51 is rotated prior to the second shutter opening / closing arm 52 against the biasing force of the tension spring 60.

When the disc cartridge 1 is inserted until it comes into contact with the insertion regulating protrusions 63, 63, the shutter member 9 is moved to the second position by the second shutter opening / closing arm 52, and the openings 7, 8 and the disc. The table insertion holes 14 and 15 are completely opened, and the first shutter opening / closing arm 51 is rotated from the inclined guide portion 30 of the shutter member 9 on the front wall 21 while sliding the shutter opening / closing pin 59, The concave portion 38 of the cartridge body 5 covered by the shutter member 9 enters.

The other operation is the same as the operation of the first shutter opening / closing arm 51 and the second shutter opening / closing arm 52 when the first surface of the disk 6 is inserted so as to face the optical pickup device. The detailed description is omitted here.

The unopened state of the openings 7 and 8 of the disc cartridge 1 (see FIG. 11) Further, when the first face or the second face of the disc 6 is opposed to the pickup device and is inserted from the shutter member 9 side, A first shutter opening / closing pin 57 or a second shutter opening / closing arm 52 at the tip of the first shutter opening / closing arm 51.
When the second shutter opening / closing pin 58 at the tip is inserted into the disc mounting portion 41 without engaging with the notch 29 of the shutter member 9, both the shutter opening / closing arms 51 and 52 open / close the shutter. The pins 57 and 58 are rotated while being mounted on the front wall 21 of the shutter member 9. The other shutter opening / closing arm 51 or 52 that does not contribute to opening / closing of the shutter member 9
The shutter opening / closing pin 57 or 58 cannot be inserted into the recess 38 because the shutter member 9 is not opened, and the disc cartridge 1 is inserted into the insertion restricting protrusions 63 and 6.
The shutter opening / closing pins 57 and 5 are contacted with the shutter opening / closing pins 57 and 5
8 comes into contact with the stopper 64, the mounting of the disc cartridge 1 at the predetermined insertion mounting position is prohibited, the disc rotation driving device 44 is prevented from being dropped, and the disc 6 is clamped and supported on the disc table 42. prohibited.

Further, the disc cartridge 1 is inserted from the shutter member 9 side, and the first shutter opening / closing arm 5 is inserted.
The first shutter opening / closing pin 57 at the one end or the second shutter opening / closing pin 5 at the end of the second shutter opening / closing arm 52
8 engages with the notch 29 of the shutter member 9 and is inserted into the disk mounting portion 41, and the shutter member 9 opens the openings 7 and 8 of the disk cartridge 1 and the disk table insertion holes 14 and 15. 11, the shutter member 9 is completely moved to the second position by the shutter opening / closing pin 57 or 58 being disengaged from the notch 29, as shown in FIG. Otherwise, the recess 3 provided in the front wall 12 of the cartridge body 5
8 is still covered with a part of the shutter member 9, and the shutter opening / closing pin 57 or 58 of the other shutter opening / closing arm 51 or 52 which does not contribute to the opening / closing of the shutter member 9 may enter the recess 38. I can't
The shutter opening / closing pins 57 and 58 come into contact with the stopper 64 before the disc cartridge 1 comes into contact with the insertion regulating projections 63, 63, and the disc cartridge 1 is prohibited from being mounted at a predetermined insertion mounting position. The dropping to the device 44 side is prevented, and the sandwiching and supporting of the disc 6 on the disc table 42 is prohibited.

Incorrectly inserted disk cartridge (see FIG. 1)
2) Furthermore, the disk cartridge 1 is attached to the shutter member 9
If the wrong insertion is performed by inserting the shutter member 9 from the side of the rear side wall 13 facing the mounting side of the shutter member 9 without inserting the shutter member 9 from the side, the shutter member 9 is inserted without any movement operation. And the second shutter opening / closing arm 5
Reference numerals 1 and 52 denote first and second shutter opening / closing pins 5 at each tip.
The disks 7, 58 ride on the flat rear side wall portion 13 of the disk cartridge 1 and are rotated while being in contact therewith. Any of the shutter opening / closing arms 51 and 52
The shutter opening / closing pins 57 and 58 of the disk cartridge 1 cannot be inserted into the cartridge 5, and the disk cartridge 1
12, the shutter opening / closing pins 57 and 58 are attached to the stopper 64 before the disk cartridge 1 abuts on the insertion restricting protrusions 63, 63, as shown in FIG. When the disk cartridge 1 comes into contact with the disk cartridge 1, the disk cartridge 1 is prohibited from being mounted at a predetermined insertion mounting position.

[0047]

As described above, when the disc cartridge according to the present invention is mounted on the recording and / or reproducing apparatus, at least an operating member for moving the shutter member arranged on the recording and / or reproducing apparatus side. A recording and / or reproducing apparatus for a disk cartridge in a state where a part of the disk cartridge engages with a notch provided in a front wall of the shutter member and an operation member for moving the shutter member engages with the notch. Since the shutter member is moved with respect to the cartridge main body by inserting into the cartridge or the operation member for moving the shutter member is moved, the opening provided in the cartridge main body is opened. Realizing a reliable movement operation of a shutter member for opening and closing a signal reading or signal writing opening provided in the cartridge main body for recording and Or reliably without allowing the opening operation of the opening by mounting operation to the reproducing apparatus, further, it can realize simplification of the movement operation mechanism of the shutter member disposed in the recording and / or reproducing apparatus.

[Brief description of drawings]

FIG. 1 is a perspective view from the upper surface side of a disc cartridge according to the present invention.

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

FIG. 3 is a plan view showing the inner surface side of the upper half of the disc cartridge.

FIG. 4 is a perspective view from the lower surface side of the disc cartridge.

FIG. 5 is a perspective view of the disc cartridge with the shutter open.

FIG. 6 is a perspective view showing a recording and / or reproducing apparatus including a shutter opening / closing mechanism for opening and closing a shutter member of the disc cartridge according to the present invention.

FIG. 7 is a plan view showing a state where a disk cartridge is inserted into the shutter opening / closing mechanism.

FIG. 8 is a first and second part of the shutter opening / closing mechanism.
3 is a front view showing the shutter opening / closing arm of FIG.

FIG. 9 is a perspective view showing a state in which the disc cartridge is brought into contact with and engaged with the first and second shutter opening / closing arms.

FIG. 10 is a plan view showing a state where the shutter member of the disc cartridge is moved to the opening opening position.

FIG. 11 is a plan view of the opening of the disc cartridge in an unopened state.

FIG. 12 is a plan view showing a state where the disc cartridge is inserted into the recording and / or reproducing apparatus from the rear side surface side.

[Explanation of symbols]

 1 Disc Cartridge 5 Cartridge Body 6 Disc 7,8 Opening 9 Shutter Member 12 Front Side Wall 13 Rear Side Wall 14,15 Disc Table Insertion Hole 21 Shutter Member Front Wall 22 Upper Shutter Plate 23 Lower Shutter Plate 29 Cutout 38 Shutter Recessed part for opening / closing pin

Claims (1)

[Claims] 1. A disc is rotatably accommodated, and signal reading or signal writing openings are formed on the upper surface and the lower surface so as to face at least a part of the disk outward in the radial direction. And a shutter member that is attached over the upper surface, the lower surface and the front side surface of the cartridge body and that is operated to move with respect to the cartridge body to open and close the opening. A disk cartridge comprising a front wall corresponding to a side surface and a notch portion with which at least a part of an operation member for moving the shutter member is engaged.