JP3383275B2 - Disk cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music signal, a video signal and the like.
Discs such as optical discs that can record information signals
Regarding disk cartridges containing recording media,
At least a part of the signal recording surface of the disc-shaped recording medium
A shutter that opens and closes the opening that faces outward in the
The present invention relates to a device having a data member. [0002] 2. Description of the Related Art Conventionally, information signals such as tone signals and video signals have been used.
Optical discs and other disc-shaped recording media
Magneto-optical disks have been proposed. This kind of disc
Dust or finger stains on the signal recording surface
However, if it is damaged, recording and playback of information signals is not possible.
May not be possible. Therefore, the above-mentioned optical disk and magneto-optical disk
Discs prevent dust and dirt from sticking and scratching fingers.
To prevent damage and further simplify handling.
Disk stored in cartridge body as enclosure
It is configured as a cartridge. The data stored in the cartridge body is
The disk is recorded while stored in the cartridge body.
It is mounted on the playback device and rotates inside the cartridge body.
Made. Therefore, the cartridge body
Located on the recording / reproducing device side provided at the center of the disc
The part to be clamped which is clamped by the disc rotation drive
An opening for the clamp is made to face outward.
In addition, the cartridge body contains the disc signal.
A part of the recording surface facing outward in the radial direction
There is a raw opening. That is, the cartridge housed in the cartridge body
The disc is driven by the disc rotating through the clamp opening.
It is clamped by a moving device and rotated to operate
Signal facing the signal recording surface of the disc through the opening
Recording / reproduction of the information signal is performed by the recording / reproduction means. As described above, the opening is formed in the cartridge body.
Once established, non-recording and storage
When used, dust enters the cartridge body and the disc surface
Inadvertent contact of fingers with the finger can be reliably prevented.
Absent. Therefore, the cartridge body contains a disk card
Close the opening when the cartridge is not attached to the recording / reproducing device.
A shutter member for closing is mounted. [0007] By the way, the information signal
Recorded once as a disk-shaped recording medium on which recording was possible
Erasing information signal recording and recording a new information signal
A magneto-optical disk has been proposed. Of this information signal
A magneto-optical disk that enables re-recording
Irradiates the light beam from the optical head from the main surface side
In both cases, the other side facing the surface irradiated with this light beam
Magnetic field modulated according to the information signal to be recorded from the main surface
By applying a magnetic field through an external magnetic field generator
Recording of a desired information signal is performed. Thus, re-recording of an information signal is enabled.
In the case of magneto-optical disks, when recording information signals,
Optical head and external magnetic field generator face each other
So that the magneto-optical disk can be stored
If the disc cartridge is
Opening for recording / reproducing on both opposing main surfaces of the body
You. However, the above-mentioned magneto-optical disk is
When playing back an information signal that has been
It is enough to irradiate the beam. Therefore, a magneto-optical disk
When reproducing information signals recorded in the
Only one recording / reproducing opening is opened
Is enough. [0010] In this manner, the information signal can be re-recorded.
For a magneto-optical disk as a recording medium, the information signal
The one used for re-recording and the desired tone signal in advance
And other information signals are recorded.
It is supposed to be used only for life. Further, a magneto-optical disk is used as a recording medium.
Recording / reproducing devices that have an optical head.
Therefore, the information has to be set in advance with compatibility with the magneto-optical disk.
Information signals are recorded and manufactured, and
Consider using optical disks that are used only for recording media.
Has been obtained. As described above, the reproduction of the information signal recorded in advance is
Magneto-optical disks used only for live
A disk containing an optical disk used only for playback
For cartridges, one of the main cartridges
Opening for reproduction and opening for clamping only on the surface side,
On the other main surface side, without opening any openings
May be kept closed. Thus, the opening is provided only on one main surface side.
For disc cartridges that only need to be
The other main surface side of the cartridge body that does not need to be provided
Is recorded on the disc stored in the cartridge body.
Sticking surface or printing of the label that displays the content of the information signal
It can be used as a surface or the like. Then, the reproduction of the information signal recorded in advance is performed.
Magneto-optical disk used only for data reproduction of information signals
Car containing an optical disk used only for
In the case of a cartridge, the label sticking surface or printing surface
To increase the area, one main surface of the cartridge body
A shutter member sufficient to close the opening opened only on the side
It is a place where it is required to use. In particular, if the diameter is 64
Disk cartridge containing small-diameter optical disks of mm
The length of each side is 68mm to 72mm.
Since it is formed in a square shape, the label sticking surface and printing surface
When the shutter member is extended on the main surface,
It is not possible to guarantee the area of the label sticking or printing surface sufficiently.
I will. Therefore, one main surface side of the cartridge body is
Shutter member sufficient to close the opening that was opened only in
Constitutes the cartridge body in which the opening is opened.
Only one half needs to be supported.
Thus, one half of the cartridge body
For shutter members that are supported only on the
Processing accuracy of the shutter member and the
It is necessary to maintain the molding accuracy of the cartridge body.
That is, the shutter member has a cantilever support structure.
Is supported by the cartridge body.
If it is not supported with an accurate support structure, the cartridge
The adhesion to the main unit cannot be guaranteed, and the opening is securely closed.
Not only can the cartridge be blocked, but also
Dropping and swinging during the slide operation.
You will not be able to perform a fixed slide. Ma
The shutter member is in contact with the cartridge body
When the slide operation is performed, the friction with the cartridge
The frictional resistance increases, and the shutter member slides smoothly.
Can no longer be made, and the cartridge body
Chips are generated. Shavings on the cartridge body
When it invades and adheres to the optical disk in the cartridge body,
Accurate recording and reproduction cannot be performed. Therefore, the present invention relates to a cartridge main body.
Open the opening only on the main surface side
The so-called single-sided type shutter member cartridge
Assures secure attachment to the
The opening is securely closed and stored in the cartridge body
Achieves reliable protection of the disc-shaped recording medium,
A disc cover that can slide the members smoothly
The purpose is to provide cartridges. Also, the present invention relates to a one-side shutter member.
Mounted on cartridge body with openings on both main surfaces
To be applied to double-sided shutter members
Possible and not applicable to this double-sided shutter member
Even in this case, the cartridge body of the shutter member
Assures secure attachment to the
Circle that guarantees secure blockage of the cartridge and is stored in the cartridge body
Achieved reliable protection of the disc-shaped recording medium, and made the shutter member circular.
A disc cartridge that can slide smoothly
The purpose is to provide [0018] The above object has been achieved.
Disc cartridge according to the present invention proposed for
The upper half and the lower half of the square
The disk-shaped recording medium is rotatably housed.
And at least one of the signal recording surfaces of the disc-shaped recording medium.
At least the opening that makes the part face outward in the radial direction
The cartridge body formed on one main surface
It is slidably attached to the cartridge body and
A shutter member that opens and closes. Shutter members are small
A shutter for opening and closing the opening at least, and this shutter
Of a shutter member formed longer than the width of the portion
A slide guide that guides the direction of movement with respect to the main unit
Is provided. This slide guide section is connected to the shutter section.
Rise that is longer than the width of the shutter part formed in contact
Engage with the guide grooves formed in the upper half and lower half
Outer engaging projection and one side on which the outer engaging projection is provided
Insert on the other side opposite to
The inner engaging ridge is provided. Above rising piece
Of the upper half and the lower half
And is formed to project from the shutter opening operation pin insertion groove.
A slide extending on the upper end surface of the shutter slide guide wall
And a slide guide protrusion.
Formed so that base of is separated from upper half and lower half
Have been. [0019] In the disk cartridge according to the present invention,
The shutter member is formed to be longer than the width of the shutter portion.
Slide guide to guide the moving direction of the shutter member
The engaging part provided in the part is either the upper half or the lower half.
Or by engaging the guide grooves formed on both sides.
To open and close the opening.
Is guided in the moving direction. At this time, the cartridge
The shutter member attached to the main body
The base of the id protrusion is separated from the upper half and / or lower half
Reduces frictional resistance with the cartridge body.
Movement and smooth movement, and
Is difficult to appear. [0020] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Will be explained. The embodiment described here uses a pre-recorded
Contains an optical disk used only for reproducing information signals
This is applied to a disk cartridge. This disc cartridge is shown in FIG.
Butt the upper half 2 and the lower half 3 together
The cartridge body 4 having a rectangular shape
Information stored in the cartridge body 4 in advance.
The optical disk 1 used only for reproducing the broadcast signal is stored
Become. The optical disk housed in the cartridge body 4
Disk 1 is a disk formed by molding a transparent synthetic resin.
A signal recording layer is formed on one main surface side of the
Information such as the desired tone signal converted into a digital signal on the recording layer
The notification signal is recorded as a pit string. The center of the optical disk 1 is
As shown in FIG. 3, a center hole 1a is formed and
The magnetic plate 1b is closed by closing the center hole 1a.
It is arranged. The optical disc 1 is used for recording
Construct a disk rotation drive installed in the raw device
Centering member located at the center of the disc table
And the magnetic plate 1b is
Attracted by the magnet arranged on the disk table side
Centering on the disk table
Is mounted. The upper and lower halves 2 and 3 are butted as described above.
Cartridge body 4 which is constructed by
As shown in FIG. 3, this disk cartridge is
When attached to the recording / reproducing device, the cartridge body 4
Disk rotating drive for rotating stored optical disk 1
Disk table into which the disk table of the moving device enters
An entry opening 5 is provided. That is,
The opening 5 for entering the table is inserted into the cartridge body 4.
The center hole 1a of the stored optical disc 1 and this center
For magnet clamps arranged to close the rotor hole 1a
Is placed on a disk table including the magnetic plate 1b of FIG.
So that the peripheral portion of the center hole 1a can face outward.
Lower half 2 constituting the lower main surface of cartridge body 4
Is formed with a circular opening substantially at the center. The main surface on the lower side of the cartridge body 4
The lower half 3 that constitutes the
Part of the signal recording area of the optical disc 1
Opening 6 for information signal reproduction to be exposed to the outside
ing. The information signal reproducing aperture 6 is as shown in FIG.
Position close to the disk table entry opening 5
From the cartridge body 4 to the front side of the cartridge body 4.
It is located approximately at the center in the left and right direction of the
Be formed. The upper main surface of the cartridge body 4
As shown in FIGS. 1 and 2,
With a closed surface without forming any openings
It has been done. This closed surface and cartridge
As shown in FIG.
Recorded on the optical disk 1 stored in the optical cartridge.
A label to which a label 7 indicating the content of the information signal is attached
A recess 8 for sticking a hole is formed over substantially the entire surface. The cartridge body 4 has an upper part.
Dust enters the interior through the information signal reproducing opening 6
To prevent it from adhering to the optical disk 1 stored here
The information signal reproducing opening 6 to open the information signal.
The shutter member 11 to be closed is slidably mounted
Become. Further, the cartridge body 4
The shutter member is provided on the front side where the shutter member 11 moves.
11 provided on the side of the recording / reproducing apparatus
Shutter release operation pin insertion groove into which the shutter release operation pin enters
12 are formed. This shutter release operation pin insertion
The groove 12 is, as shown in FIGS.
With an open end 12a on one side perpendicular to the front of the body 4
The shutter member 11 is not formed over the moving direction of the shutter member 11.
You. On the front side of the lower half 3, as shown in FIG.
So that it projects into the shutter opening operation pin insertion groove 12.
To assure stable movement of the shutter member 11.
Shutter slide guide wall 13
The rise is formed. The information signal reproducing opening 6 is opened and closed.
The shutter member 11 is formed by molding a synthetic resin.
Formed as shown in FIGS. 3 and 6.
A size sufficient to close the information signal reproducing opening 6.
And a shutter portion 15 formed at
And a slide guide portion 16 formed on the base end side of the
You. The slide guide section 16 is
Constitutes an attachment part to the
Having a function of guiding the sliding direction of the data unit 15
And formed so as to be long with respect to the width of the shutter portion 15.
I get it. The slide guide section 16 includes
As shown in FIG. 1, the shutter member 11 is
4, the cartridge body 4
The thickness D of the cartridge body 4₁ Lower height H₁
And the rising piece 17 is formed continuously with the shutter portion 15
Have been. Such height H₁ With the rising piece 17
Forming the shutter member 11 on the upper half 2 side.
So that it can be attached to the cartridge body 4
This is to configure. Then, the shutter portion 1 of the rising piece 17
5 is connected to the shutter unit 15
To the parts protruding from both sides of the lower half 3
A supporting projection 18 for supporting is protruded. And this
The inner surface on the distal end side of the supporting projection 18 is clear from FIG.
As described above, the opening for information signal reproduction is
Perforated at the end of cartridge body 4 rather than mouth 9
Outside to guide the movement of the shutter member 11 in the sliding direction
Engaging with the side slide guide groove 19, the shutter member 1
1 to guide the sliding direction and the shutter
Person in charge of preventing member 11 from coming off cartridge body 4
A pair of outer engaging projections 20, 20 forming a joining portion
Have been. The shutter 15 is formed so as to be connected to the shutter 15.
One side of the rising piece 17 from which the supporting projection 18 is projected.
On the other side facing the upper and lower halves 2 and 3
Insertion piece inserted into the shutter opening operation pin insertion groove 12
22 is provided so as to be parallel to the support projection 18.
I have. The insertion piece 22 has substantially the same width as the width of the shutter 15.
The insertion piece 22 is formed on the outer surface on the distal end side.
Formed on the inner surface of the upper half 2
Forming an engaging portion for engaging with the formed inner slide guide groove 23
The inner engagement ridge piece 24 is provided so as to protrude. It should be noted that the inner engaging member constituting the second engaging portion
The joint strip 24 is formed over substantially the entire width of the insertion piece 22.
However, multiple protrusions are provided in parallel and
Is also good. Further, on the other side edge side of the rising piece 17
Therefore, on one end side protruding from the side of the shutter portion 15,
Shutter lock member disposed in cartridge body 4
The locked piece 27 that engages with the lock part 26 of the
Have been. The locked piece 27 is connected to the shutter member 1.
1 is attached to the cartridge body 4 and the cartridge
The information signal reproducing opening 9 formed in the main body 4 is closed.
When the shutter lock member is in the closed position,
25, and the shutter member 11 is
The opening is held at the closed position. Further, the shutter portion 1 of the rising piece 17
4 and FIG. 7 on the inner surface, which is the surface on the side where 5 extends.
As shown in FIG.
Extending on the upper end surface of the shutter slide guide wall 13.
A pair of slide guide projections 28, 28
I have. The pair of slide guide projections 28, 28
Between the upper half 2 and lower half 3 on the front side of the ridge body 4
From the cartridge body 4 into the cartridge body 4
Have been. The shutter member 11 configured as described above
To attach the cartridge to the cartridge body 4, the shutter 15
Extend over the information signal reproducing opening 6.
In both cases, the support projection 18 faces the outer surface of the lower half 3.
And a pair of outer engaging members formed on the distal end side of the supporting projection 18.
The mating pieces 20, 20 are engaged with the outer slide guide grooves 19.
Let Further, insert the insertion piece 22 with the shutter release operation pin.
It was inserted into the groove 12 and formed on the tip side of the insertion piece 22.
The inner engaging ridge 24 is formed on the inner surface of the upper half 2.
Engage with the side slide guide groove 23. Thus a pair
Of the outer slide guide groove 19
And the inner engagement ridge 24 is
By engaging the guide groove 23, as shown in FIG.
As described above, the shutter member 11 is
So that the front half of the lower half 3 is
It is attached to the ridge body 4. At this time, a pair of slide guide projections 2
8 and 28 are on the upper end surface of the shutter slide guide wall 13
Is extended. And, as shown in FIG.
A shutter member 11 is mounted on the front side of the cartridge body 4.
When attached, the base of the slide guide projections 28, 28
28a, 28a are the shutter opening operation pin insertion grooves 1
2 constitutes the front side of the cartridge body 4.
Separated from lower halves 2 and 3, shutter release operation pin inserted
The space portion is constituted by the groove 12. As described above, the cartridge
The shutter member 11 that has been removed is provided with a pair of outer engagement projections 20 and 2.
0 is engaged with the outer slide guide groove 19 and the inner engagement.
The inner slide guide groove 23 with the ridge 24 engaged
In the direction in which the information signal reproducing opening 6 is opened and closed.
Slideable in the direction of arrow A and arrow B in FIGS. 2 and 3
Noh is done. Then, the slide guide projections 28, 28
Base 28a is formed by the shutter opening operation pin insertion groove 12.
Therefore, the upper and lower halves 2 and 3 are separated from the front side. did
Accordingly, the shutter member 11 is
Friction resistance can be reduced and sliding can be performed smoothly.
And prevents the generation of shavings on the cartridge body 4.
can do. As described above, the cartridge body 4
The attached shutter member 11 has an information signal reproducing aperture.
When the part 6 is moved to the closed position, the locked piece 27
Engages with the lock portion 26 of the shutter lock member 25 and locks.
As shown in FIG. 3, the information signal reproducing aperture is
The part 6 is held in the closed position. The slide gear of the shutter member 11
A pin engagement hole 29 for shutter closing operation
Are drilled. This pin engagement hole 29 is
Insert the cartridge into the cartridge mounting section of the recording / reproducing device
When the information signal reproducing opening 6 is opened.
When a shutter member 11 is operated in the closing position direction,
The shutter closing operation pin arranged on the raw device side engages
Things. Then, the information signal reproducing opening 6 is closed.
A disk camera holding the shutter member 11 at the closed position
The cartridge is the opening of the shutter opening operation pin insertion groove 12.
One side of the recording / reproducing apparatus facing the end 12a is defined as an insertion end.
When inserted into the cartridge mounting section, the shutter opens
A shaft provided on the recording / reproducing device side in the operation pit insertion groove 12
The cutter release pin enters. And more disk car
When the cartridge is inserted inside the cartridge mount,
The shutter lock member 25 is closed by the shutter release pin.
The cartridge body 4 is elastically displaced inward and locked.
The lock of the piece 27 to the shutter lock member 25 is released.
As a result, the shutter member 11 is free to slide.
From here, insert the disk cartridge further.
When inserted inside the attachment portion, the shutter member 11 opens the shutter.
The release pin is pressed to open the information signal reproducing opening 6.
2 and 3 in the direction of arrow A in FIG.
As shown in FIG. 5, the information signal reproducing opening 6 is opened.
You. Further, mounting of a cartridge in the recording / reproducing apparatus
The information signal reproduction opening 6 is attached to the
The ejected disc cartridge is ejected
Shutter is closed in the pin engagement hole 29 for shutter closing operation.
The shutter member 11 engaged with the closing operation pin is
For the cartridge body 4 that is moved to the outside of the
The direction in which the information signal reproducing opening 6 is relatively moved and closed.
2 and 3 in the direction of arrow B in FIG.
Thus, the information signal reproducing opening 6 is closed. In the above embodiment, the inner slide gear
The id groove 23 is formed by piercing the inner surface of the upper half 2.
However, the thickness of the upper half 2 is not
If the depth of the guide groove 23 is not guaranteed enough,
In this case, as shown in FIG.
Of the ridges 30a, 30b parallel to each other
Therefore, the inner slide guide groove 23 is formed.
May be done. By the way, in the above-described embodiment, the shutter
The member 11 is formed of a synthetic resin mold.
However, punch a metal plate such as a thin stainless steel plate and bend it.
It may be formed. A shutter member formed using this metal plate
11 is not bent as shown in FIG. 9 and FIG.
And a pair of outer engaging projections forming an engaging portion.
20, 20 project a pair of projections on one side edge of the support projection 18;
These protruding pieces are formed by bending inward. Ma
In addition, the inner side protruding strip 24 constituting the engaging portion is
Formed by bending the tip edge side of the outside
Become. Further, a shutter formed using this metal plate is used.
In the data member 11, the slide guide 16 is formed.
Provided on the cartridge body 4 side inside the rising piece 17
Slide guide extending on the slide guide wall 13
It is difficult to form the projection 28. So, above
As shown in FIGS. 9 and 10, the slide guide projection 28 is
A pair of protruding pieces is provided on the other side edge side of the rising piece 17.
The projections are formed by bending these projections. That is,
The slide guide projection 28 is located on the front of the cartridge body 4.
Cartridge body from between the upper half 2 and the lower half 3
4 is formed so as to protrude in a direction to enter the inside of the inside. Also, the shutter lock member 25 is engaged.
The locked piece 27 is also an end on the other side edge side of the rising piece 17.
Is formed by bending a protruding piece protruding from the surface. A shutter member formed using this metal plate
The cartridge 11 is also similar to the one made of the synthetic resin.
It is attached to the cartridge body 4. That is,
To extend over the information signal reproducing opening 9.
With the eel, the supporting projection 18 is attached to the outer surface of the lower half 3.
And a pair formed on the tip side of the support projection 18.
Of the outer slide guide groove 19
To be engaged. Furthermore, the shutter release operation of the insertion piece 22 is performed.
Insert the pin into the pin insertion groove 12 and insert
The formed inner engaging ridge 24 is formed on the inner surface of the upper half 2.
The formed inner slide guide groove 23 is engaged. this
At this time, the slide guide projections 28
Extending on the upper end surface of the guide wall 13.
You. As described above, the pair of outer engagement projections 20, 20
Into the outer slide guide groove 19 and
The engagement ridge 24 is engaged with the inner slide guide groove 23.
Metal shutter attached to the cartridge body 4
The member 11 is similar to the member made of the synthetic resin described above with reference to FIG.
As shown, before the lower half 3 by the slide guide portion 16
Attached to the cartridge body 4 so that the front side is held
Can be Then, as shown in FIG.
When the shutter member 11 is attached to the front side of the body 4
The base 28a of the slide guide projection 28 is
Cartridge opening operation pin insertion groove 12
Separated from the upper and lower halves 2 and 3 constituting the front side of the body 4,
A space is formed by the shutter opening operation pin insertion groove 12.
You. The metal shutter member 11
Is slidable relative to the cartridge body 4
The information signal reproducing opening 6 is opened and closed by the shutter unit 15.
You. At this time, the base 28a of the slide guide projection 28
Is moved up and down by the shutter opening operation pin insertion groove 12.
The fins 2 and 3 are separated from the front side. Therefore,
The frictional resistance of the cutter member 11 with the cartridge body 4 is reduced.
The shutter member 11 can slide smoothly.
Done. Further, when the sliding operation of the shutter member 11 is performed,
To prevent generation of shavings of the cartridge body 4
Can be. As described above, the pair of outer engaging projections 20,
20 is engaged with the outer slide guide groove 19,
Engage inner engagement ridge 24 with inner slide guide groove 23
Shutter mounted on the cartridge body 4
The member 11 has a main part of the cartridge body 4
4 or FIG. 11 that is separated from the surface in the direction of arrow Y
Even if a turning force is applied in the
Is formed on the inner surface of the upper half 2.
The cartridge body 4 is supported by the
Maintain a state of being in close contact with the main surface. Therefore, the above
The shutter member 15 reproduces an information signal by the shutter section 15.
Opening 6 can be securely sealed. Further
Then, the shutter portion 15 comes into close contact with the main surface of the cartridge body 4.
In this state, the shutter member 11 is kept safe.
The slide operation can be performed in a fixed state. Further, a drop impact or the like is applied to the cartridge body 4.
Is applied, the outer slide guide grooves 19 and
Outer engaging projections 20 and 20 and inner sliding guide groove 23
Shutter section with the engagement projections 24
As described above, the rotation of the material 11 in the arrow Y direction in FIG. 4 is restricted.
Is easily removed from the cartridge body 4
Is prevented, and the cartridge is securely attached to the cartridge body 4.
Maintain state. In the above-described embodiment, the shutter member
11 is a portion facing the outside of the cartridge body 4
Only the lower half 3 side covers the upper half 2 side
The upper surface of the cartridge body 4 is
It can be widely opened as a label sticking surface
Wear. In the above embodiment, the cartridge body 4
The information signal reproducing opening 6 formed on only one main surface is opened.
A so-called one-sided type with only the shutter part 15 to close
Of the disk cartridge to which the shutter member 11 is attached.
Although described using examples, the present invention is not limited to FIGS.
As shown in FIG. 14, light that enables re-recording of an information signal
Like a disk cartridge containing a magnetic disk 31
On the opposite main surfaces of the cartridge body 4 respectively.
The formed information signal recording / reproducing openings 32 and 33 are formed.
And a pair of shutters for opening and closing these openings 32 and 33.
So-called double-sided shutter section having sections 42 and 43
The present invention can also be applied to a member to which the member 41 is attached. A system applied to this disk cartridge
The shutter member 41 is formed by punching and bending a thin metal plate.
As shown in FIG.
Information signal recording formed on both main surfaces of the ridge body 4 respectively
A pair of shutters for closing the reproduction openings 32 and 33, respectively.
While connecting the base ends of the
Slide guide that constitutes the mounting part to the cartridge body 4
And is formed in a U-shaped cross section. The slide guide section 44 is
The shutter portions 42 and 43 are formed longer than the width of
The length of which the sides protrude from both sides of the shutter parts 42 and 43
It is formed in. The slide guide 44 has
Connecting piece (rising piece) 45 for connecting shutter parts 42 and 43
Of the cartridge body 4 at both ends.
The first and second half holding portions 46 and 47 are respectively
Is formed. These first and second half holding portions
46, 47 are heights D on the front side of the lower half 3_TwoRoughly corresponds to
Height H_TwoFormed to form a U-shaped cross section with
Be done. The connecting piece (rising piece) 45 is a one-sided type
Is the same as the rising piece 17 of the shutter member 11 of FIG.
Accordingly, the rising 17 of the one-side type shutter member 11 and
It has a similar effect. Then, the first and second half holding portions 4
Outer surface of lower half 3 bent at one side of 6, 47
The lower end of the support protrusions 48, 49 extending to the side
Outer slide guide groove 1 formed on the outer surface side of the
9 to guide the moving direction of the shutter member 41
The cartridge body 4 of the shutter member 41
Outer engaging projections 5 forming an engaging portion for preventing from coming off
0 and 51 are bent. Then, the tip side of the first half holding portion 46
On the other side, the shutter member 41 is attached to the cartridge body 4.
When attached to the cartridge body,
When it is inserted into the shutter opening operation pin insertion groove 12
In both cases, the shutter provided in the cartridge
The engaged piece 52 that is relatively engaged with the tulock member 25 is bent.
Has been established. Further, the first and second half holders
On one side of 46, 47, the cartridge body 4
Insertion pieces 53, 5 inserted into the data opening operation pin insertion groove 12.
4 are bent, and these insert pieces 53 and 54
Is an inner slide guide formed on the inner surface of the upper half 2.
Inner engaging projection 5 constituting an engaging portion that engages with the groove 23
5, 56 are formed rising. The shutter member 41 constructed as described above
13 and 14, each shutter unit 4
2, 43 extend over the information signal recording / reproducing openings 32, 33.
In the cartridge body 4 from the front side.
Will be combined. At this time, the first and second half holding portions
The outer engaging projections 50 and 51 constituting the outer and outer 46
While being engaged with the ride guide groove 19, the insertion piece 5
3, 54 are inserted into the shutter opening operation pin insertion groove 42.
And the inner engaging projections 55, 56 of these insertion pieces 53, 54.
Slide guide formed on the inner surface of the upper half 2
The groove 23 is engaged. The first half holding portion 46 is bent.
The formed engaged piece 52 is compatible with the shutter lock member 25.
In the shutter opening operation pin insertion groove 12 so as to be able to engage with each other.
It will be in a state of protruding. As described above, the first and second half holders 4
Hold the front side of the lower half 3 with 6, 47
Shutter member 4 fitted to cartridge body 4
As shown in FIG. 13 and FIG.
Outer slide guide groove 19 engaged with 0,51 and inner side
Inner slide guide groove 2 with which engagement projections 55 and 56 are engaged
3 guides the slide direction and an information signal recording / reproducing aperture
Opening closing position where the sections 32 and 33 are closed, and the information signal
Opening position where signal recording / reproducing openings 32 and 33 are opened
The cartridge body 4 so that it can slide
Be attached. The disk cart configured as described above
Also in the ridge, the shutter member 41 is further
Slide guide groove 19 and inner slide guide groove 23
Outer engaging projections 50, 51 and inner engaging projections 55, 56
The cartridge body 4
As a result, external force such as drop impact
Is added, and the cartridge body 4 is deformed.
However, the outer engagement projections 50 and 51 and the inner engagement projection 5
Either 5 or 56 is the outer slide guide groove 19 or the inner
The state of being engaged with the side slide guide groove 23 is maintained. Obedience
Therefore, the volume of the shutter member 41 from the cartridge body 4
Easy detachment is prevented and securely attached to the cartridge body 4
Maintain the condition. In each of the above embodiments, the cartridge body
Magneto-optical disk or disk-shaped recording medium stored in
Although an example in which an optical disk is stored has been described, the present invention
Houses a disc on which other information signals are recorded
It can be applied to disc cartridges.
You. [0067] As described above, the disk according to the present invention
In the case of a cartridge, the engagement portion of the shutter member is upward.
Formed on one or both of the half and lower half
Cartridge body by engaging the guide groove
It is installed so that it will not come off from
The slide direction is guided by the
It can be moved in the direction to open and close the opening formed in the main body.
The shutter is opened and closed.
The cartridge unit so that it is separated from the main surface of the cartridge body.
Even if power is applied, the rotation is restricted by the engaging portion.
The shutter section to the main surface of the cartridge body.
Maintain the wearing state. Therefore, the shutter member
Part to ensure that the opening of the cartridge body is sealed
I can put it. In addition, the shutter
Maintain a close contact with the main surface of the
And formed with a slide guide that is longer than the width of the
So that it can be operated in a stable state
Become. And it is attached to the cartridge body
The base of the slide guide projection is the upper half of the shutter member.
And / or being separated from the lower half by the cart
The frictional resistance with the ridge body is reduced, the movement is performed smoothly,
In addition, it is difficult to produce shavings due to the slide. Accordingly
And the scraps adhere to the optical disk in the cartridge body
Can be prevented and accurate recording and playback can be performed.
Wear. Further, the cartridge body may be subjected to a drop impact or the like.
When an external force is applied and the cartridge body is deformed
However, the engaging portion must not maintain the state engaged with the guide groove.
Therefore, the shutter member can be easily moved from the cartridge body.
It is prevented from falling off and securely attached to the cartridge body.
State is maintained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a disk cartridge according to the present invention with a shutter member removed. FIG. 2 is a perspective view showing an upper main surface of the disk cartridge. FIG. 3 is a perspective view showing a lower main surface of the disk cartridge. FIG. 4 is a perspective view showing a mounting state of a shutter member of the disk cartridge. FIG. FIG. 5 is a perspective view of the disc cartridge showing a state where a shutter member has been moved to an opening opening position. FIG. 6 is a perspective view showing a synthetic resin shutter member used for the disk cartridge. FIG. 7 is a bottom view of the synthetic resin shutter member. FIG. 8 is a partial sectional view showing another example of the inner slide guide groove formed in the upper half. FIG. 9 is a perspective view showing a metal shutter member applied to the present invention. FIG. 10 is a bottom view of the metal shutter member. FIG. 11 is a partial cross-sectional view showing a state in which the metal shutter member is attached to a cartridge body. FIG. 12 is a perspective view showing an example in which the present invention is applied to a disk cartridge having an information signal recording / reproducing opening on both sides of a cartridge body, with a shutter member removed. 13 is a perspective view showing an upper main surface of the disk cartridge. FIG. 14 is a perspective view showing a lower main surface of the disk cartridge. [Description of References] 1 Optical disk, 4 cartridge body, 6 information Signal reproduction opening, 11 shutter member, 12 shutter release pin insertion groove, 15 shutter portion, 16 slide guide portion, 17 rising piece, 19 outer slide guide groove as first engagement groove, 20 first engagement Outer engaging projection as a second engaging portion; inner sliding guide groove as a second engaging groove;
8 Slide guide protrusion, 28a Base of slide guide protrusion

Continuation of front page (56) References JP-A-64-32478 (JP, A) JP-A-3-40279 (JP, A) JP-A-2-101378 (JP, U) JP-A-3-9877 (JP) , U) Shokai 62-3680 (JP, U) Shokai 1-133368 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 23/03

Claims (1)

(57) [Claims 1] A quadrangular upper half and a lower half are formed by butt-joining, and a disc-shaped recording medium is rotatably accommodated and a signal of the disc-shaped recording medium is received. A cartridge body having at least one main surface formed with an opening that exposes at least a part of the recording surface radially outward, and a shutter member slidably mounted on the cartridge body to open and close the opening. The shutter member has a shutter portion that opens and closes at least the opening portion, and a slide guide portion that is formed to be longer than the width of the shutter portion and guides a moving direction of the shutter member with respect to the cartridge body. The slide guide portion has a rising piece longer than the width of the shutter portion formed in connection with the shutter portion,
An outer engaging projection that engages with the guide groove formed in the upper half and the lower half; an insertion piece on the other side opposite to the one side on which the outer engagement projection is provided; An inner engaging projection formed so as to be protruded from a part of the rising piece in a direction to enter inside from between the upper half and the lower half, and formed to protrude into a shutter opening operation pin insertion groove. A disc guide having a slide guide protruding piece extending on an upper end surface of the shutter slide guide wall, wherein a base of the slide guide protruding piece is separated from the upper half and the lower half .