JP4631421B2 - Protective member for disk cartridge and disk cartridge - Google Patents

Description

  The present invention relates to a recording and / or recording method in which a part of a disc provided in the disc cartridge is exposed to the outside over the inner and outer circumferences, and is detachably attached to a disc cartridge containing a disc such as an optical disc used as an information recording medium. Alternatively, the present invention relates to a protective member for a disk cartridge provided with an opening closing plate that closes an opening for allowing a reproducing section to face, and a disk cartridge using the protective member.

  2. Description of the Related Art Conventionally, disk cartridges such as an optical disk used as an information recording medium are rotatably stored in a cartridge body, and a disk cartridge that is mounted on a recording and / or reproducing apparatus while the disk is stored in the cartridge body is widely used. Yes. In this type of disk cartridge, a disk such as an optical disk is housed in a cartridge main body, so that the disk can be planned and loaded into and removed from the disk recording and / or playback device.

  In this type of disc cartridge, an opening for recording and / or reproduction is provided so that, for example, a part of the signal recording area of the optical disc housed in the cartridge body is exposed outward over the inner and outer circumferences of the optical disc. ing. An optical pickup device and a magnetic head device constituting recording / reproducing means provided on the disk recording and / or reproducing device side face the recording and / or reproducing opening, and the optical pickup device and / or the magnetic head device are used. By scanning the signal recording area of the optical disc, information signals are recorded or reproduced on the optical disc.

  By the way, if the recording and / or reproducing opening provided in the cartridge main body is left open, dust will enter the cartridge main body during storage of the disk cartridge, contaminating the optical disk, and further recording the disk. In addition, there is a risk that the optical disk may be damaged by foreign matter that enters the cartridge body during handling such as loading / unloading to / from the playback apparatus.

  In order to solve such problems, the disk cartridge is provided with a shutter member that opens and closes a recording and / or reproducing opening. By providing the shutter member, the recording and / or reproducing opening is closed by the shutter member during storage which is not mounted on the disk recording and / or reproducing device. Can be reliably protected.

  In this type of disk cartridge, Patent Document 1 discloses that a shutter member that opens and closes a recording and / or reproducing opening is detachable from the disk cartridge.

JP 2003-109350 A

  Incidentally, in a disc-shaped recording medium used as an information recording medium, particularly in an optical disc in which information is recorded or reproduced using optical means, a high recording density and a high capacity are achieved. It has been. As a result, an optical disc has been proposed that achieves a high capacity while being miniaturized and is miniaturized to the extent that it can be placed on a human palm.

  Even in such a disc cartridge that is downsized, it is difficult to reduce the recording and / or reproducing opening in accordance with the downsizing of the disc cartridge.

  For example, an optical pickup for scanning or recording an information signal by scanning a signal recording area of an optical disc includes an objective lens for condensing a light beam on the optical disc and an actuator for driving and displacing the objective lens. It is an essential component and difficult to downsize.

  In addition, in order to record or reproduce an information signal with respect to an optical disc with a high density, it is necessary to bring the optical pickup close to the optical disc. This is to reduce the spot diameter of the light beam collected on the optical disk using an objective lens having a large numerical aperture (NA). In order to bring the optical pickup closer to the optical disk, at least a part of the optical pickup needs to enter the disk cartridge.

  In order to allow an optical pickup, which is difficult to be miniaturized in accordance with the miniaturization of the disc cartridge, to enter the disc cartridge, it is necessary to enlarge the recording and / or reproducing opening. When the recording and / or reproducing opening is relatively large compared to the size of the disk cartridge, a shutter member sufficient to open and close the opening cannot be mounted movably in the plane of the disk cartridge. For this reason, it becomes difficult to protect the optical disk stored in the disk cartridge by closing the recording and / or reproducing opening.

  An object of the present invention is to close a recording and / or reproducing opening which is larger than the size of the disk cartridge, and to protect a disk such as an optical disk used as an information recording medium housed in the disk cartridge. It is to provide a protective member for a disk cartridge.

  Another object of the present invention is to provide a disk cartridge protective member capable of reliably closing a recording and / or reproducing opening provided in the disk cartridge.

  Still another object of the present invention is to provide a protective member which is attached to a disk cartridge and can prevent erroneous insertion of the disk cartridge into a disk recording and / or reproducing apparatus.

  Still another object of the present invention is to reliably close a recording and / or reproducing opening which is larger than the size of a cartridge body containing a disk such as an optical disk, thereby protecting the disk housed in the cartridge body. It is an object of the present invention to provide a disc cartridge that can be used.

The protection member for a disc cartridge according to the present invention proposed to achieve the above-described object is such that a part of the disc provided on one surface of the disc cartridge that rotatably accommodates the disc is arranged on the inner and outer circumferences. An opening closing plate that covers the opening that faces outward, and a cartridge support that engages the side surface of the disk cartridge and supports the opening closing plate to the disk cartridge. The disk cartridge has a size equal to or larger than the planar shape of the disk cartridge, and the opening closing plate covers the entire surface of one surface of the disk cartridge, and is supported by the disk cartridge in a state where the other surface of the disk cartridge is not covered .

  The cartridge support portion engages with a recess provided on the side surface of the disc cartridge to support the disc cartridge.

  The opening closing plate can be used as an erroneous insertion prevention unit that prevents the disk cartridge from being erroneously inserted into the disk recording and / or reproducing apparatus when attached to the disk cartridge. The opening blocking plate is an erroneous insertion prevention unit that increases the thickness of the disk cartridge or increases the planar shape of the disk cartridge to prevent erroneous insertion of the disk cartridge into the disk recording and / or playback device. The

  The opening blocking plate is made of a transparent material that allows one side of the disk cartridge to be seen through, so that a label or the like provided on one side of the disk cartridge can be seen through from the outside.

The present invention also includes a disk, a cartridge main body in which the disk is rotatably accommodated, and an opening formed on one side for allowing a part of the disk to face outward over the inner and outer circumferences, and the opening is closed. And a protective member comprising an opening blocking plate that covers one surface side of the cartridge body and a support portion that supports the opening blocking plate on the cartridge body, and the opening blocking plate is larger than the planar shape of the disk cartridge. The protective member is a disk cartridge that is supported in such a manner that the opening blocking plate covers the entire surface of one surface of the disk cartridge and does not cover the other surface of the disk cartridge.

  The protective member for a disk cartridge according to the present invention can protect the stored disk by closing the opening that allows the disk provided in the disk cartridge to face outward when attached to the disk cartridge.

  Further, the protective member for the disk cartridge according to the present invention opens the entire other surface that is not covered by the opening closing plate, so that the label or the recording contents provided on the other surface of the disk cartridge Since the printing part is not covered, the recorded contents can be read immediately, and it is not necessary to provide a label or the like on the protective member.

  Further, the protective member for the disk cartridge is attached to the disk cartridge, thereby preventing erroneous insertion of the disk cartridge into the disk recording and / or reproducing apparatus.

  Furthermore, in the disc cartridge according to the present invention, since the opening portion that faces the disc outward is closed by a removable protective member, the opening portion that is formed larger than the cartridge main body is reliably closed, The disk stored in the cartridge body can be reliably protected.

  Hereinafter, a protection member for a disk cartridge according to the present invention and a disk cartridge to which the protection member is attached will be described with reference to the drawings.

  The disk cartridge to which the protective member for the disk cartridge according to the present invention is detachably attached will be described. This disk cartridge 1 has a pair of upper and lower halves 3 and 4 butt-joined as shown in FIGS. The formed cartridge main body 5 is provided, and an optical disk 6 that is a disk used as an information recording medium is rotatably accommodated in the cartridge main body 5.

  The disc cartridge 1 contains, for example, an optical disc 6 on which program data for executing a television game and video data are recorded, and is configured to be extremely small. The disc cartridge 1 accommodates, for example, a small-diameter optical disc 6 having a diameter of about 60 mm, and is formed to a size that can be accommodated in the palm of one hand.

  The disk cartridge 1 shown here contains a read-only optical disk 6 on which information signals such as program data are recorded in advance.

  As shown in FIGS. 1 and 2, the cartridge main body 5 constituting the disk cartridge 1 has an arcuate portion 7 on the front surface on the insertion end side of the disk recording and / or reproducing apparatus to which the disk cartridge 1 is mounted. Forming. The arcuate portion 7 is formed in a substantially semicircular arc shape having a constant radius around the center of the optical disc 6 accommodated in the disc accommodating portion 8 configured in the cartridge body 5. That is, the arc-shaped portion 7 is formed as a semicircle that faces a portion corresponding to a semicircle of the optical disc 6 accommodated in the cartridge body 5.

  Opposite side surfaces that are continuous with the arc-shaped portion 7 of the cartridge body 5 are formed as side surfaces 9 and 10 that are parallel to each other, and a back surface that faces the arc-shaped portion 7 is gently curved and formed as a continuous curved portion 11. Has been. That is, the back side of the cartridge body 5 is a curved portion 11 having a smaller curvature than the arcuate portion 7 having a larger radius than the semicircular arcuate portion 7 formed on the front side of the cartridge body 5.

  Since the disc cartridge 1 has a substantially semicircular arc-shaped portion 7 on the insertion end side, and the back surface facing the arc-shaped portion 7 is also a curved portion 11, further downsizing of the optical disc 6 to be accommodated is realized. Yes.

  As shown in FIG. 2, a center hole 6a formed at the center of the optical disk 6 housed in the cartridge body 5 and its periphery are outwardly provided at the center of the lower half 4 constituting the lower surface side of the cartridge body 5. A circular central opening 12 is formed so as to face the surface. A part of a disk rotation driving mechanism provided on the side of the disk recording and / or reproducing apparatus on which the disk cartridge 1 is mounted, for example, a turntable, enters the central opening 12.

  As shown in FIG. 2, the lower half 4 constituting the lower surface side of the cartridge body 5 is formed with a head portion opening 13 which is a recording and / or reproducing opening. The head opening 13 is located on the side surface 9 of the cartridge body 5 and is large enough to allow a part of the signal recording area of the optical disk 6 accommodated in the cartridge body 5 to face outward over the inner and outer circumferences. It is formed in a rectangular shape. That is, the head portion opening 13 is formed so as to face one side surface 9 which is a straight flat surface other than the front surface where the arcuate portion 7 of the cartridge body 5 is formed. Further, as shown in FIG. 2, the side opening 9 side of the lower half 4 is notched and opened in the head opening 13.

  The head opening 13 provided in the disk cartridge 1 of the present example enters a part of an optical pickup constituting recording and / or reproducing means provided on the disk recording and / or reproducing apparatus side in which the disk cartridge is used. It is formed in the size to be made. In other words, the head opening 13 includes an objective lens that condenses the light beam, and is formed to have a size sufficient to allow a part of the optical pickup to enter. Therefore, the head opening 13 is formed to have a larger opening area than the size of the cartridge body 5.

  In addition, the disk cartridge 1 of this example has a disk recording and recording on one side surface 9 of the cartridge body 5 so that the disk cartridge 1 provided with a shutter member can be mounted on a disk recording and / or reproducing apparatus. An operation piece entry groove 14 into which a shutter member moving operation piece provided on the reproduction apparatus side enters is provided. This prevents interference with a shutter member moving operation piece provided on the disk recording and / or reproducing apparatus side, and enables insertion into this apparatus.

  In a disk recording and / or reproducing apparatus using a disk cartridge provided with a shutter member, a lock mechanism that locks a shutter member that closes the head opening is operated to open the head opening. A shutter member support mechanism for supporting the shutter member at a position is provided. Therefore, the disk cartridge 1 of this example has a pressing biasing force from the shutter member support mechanism when it is mounted on this type of disk recording and / or reproducing apparatus, or when mounted on the disk recording and / or reproducing apparatus. A pressing force avoiding portion 15 formed as a concave portion for avoiding is provided on one side surface 9 of the cartridge main body 5.

  Further, on the other side surface 10 side facing the one side surface 9 of the cartridge main body 5, the disc cartridge 1 is inserted in the disc recording and / or reproducing apparatus by reversing the upper and lower surfaces to prevent erroneous insertion. A prevention groove 16 is provided, and a loading recess 17 for engaging a part of the loading mechanism on the disk recording and / or reproducing apparatus side is provided.

  As described above, the head opening 13 that is left open is closed by the protective member 21 that is detachably attached to the disk cartridge 1.

  As shown in FIGS. 1 and 2, the protective member 21 covers the surface of the cartridge body 5 where the head opening 13 is formed, covers the head opening 13 with the opening blocking plate 22, and the disk cartridge 1. And a cartridge support portion composed of a plurality of engagement claw pieces 23 to 26 that support the opening closing plate 22 on the disk cartridge 1 by engaging with the side surface of the disk.

  In this example, the opening closing plate 22 is formed in a size that matches the planar shape of the cartridge main body 5, and closes the head opening 13 by being superimposed on one surface of the cartridge main body 5.

  Here, the opening closing plate 22 is made of a transparent material. The opening closing plate 22 is formed of a transparent material, so that one surface side of the cartridge body 5 can be visually observed with the protection member 21 attached.

  The plurality of engaging claw pieces 23 to 26 constituting the cartridge support portion are concave portions formed on the side surface of the cartridge main body 5 when the one surface side of the cartridge main body 5 is covered by the opening closing plate 22, specifically, It is provided at a position to engage with the operation piece entry groove 14, the pressing force avoiding portion 15, the erroneous insertion preventing groove 16, and the loading recess 17. Each engaging claw piece 23-26 is provided with a locking claw 23a-26a at the tip, and the locking claw 23a-26a is connected to the operation piece entry groove 14, the pressing force avoiding part 15, and the erroneous insertion preventing groove 16. The cartridge main body 5 is supported by being latched in the loading recess 17.

  Each of the engaging claw pieces 23 to 26 engages the engaging claw 23 a to 26 a with the operation piece entering groove 14, the pressing force avoiding portion 15, the erroneous insertion preventing groove 16, and the loading concave portion 17 while being elastically displaced. Is formed. That is, the engaging claw pieces 23 to 26 support the opening closing plate 22 on the cartridge body 5 by being pressed against the side surface of the cartridge body 5.

  The engaging claw pieces 23 to 26 for supporting the opening closing plate 22 on the cartridge main body 5 are the operation piece entering grooves 14 formed on the side surfaces of the cartridge main body 5 with the engaging claw pieces 23 to 26 on the distal end side. Since it is supported by the cartridge main body 5 by engaging with the pressing force avoiding portion 15, the erroneous insertion preventing groove 16, and the loading concave portion 17, when the protective member 21 is attached to the cartridge main body 5, as shown in FIG. In addition, the entire surface of the other surface of the cartridge body 5 can be left open.

  Further, the protective member 21 is provided with a side surface closing portion 27 that closes the side surface opening portion 13a opened by cutting out one side surface 9 side of the lower half 4 of the head portion opening portion 13. The side closing portion 27 is formed so as to hang down to one end side of the opening closing plate 22. When the protection member 21 is attached to the disk cartridge 1, the side closing portion 27 is engaged with the side opening 13 a and is combined with the opening closing plate 22. The head portion opening 13 is closed.

  The protective member 21 configured as described above has the opening closing plate 21 superimposed on the other surface side of the cartridge main body 5 in which the head opening 13 is formed, and the distal ends of the engaging claw pieces 23 to 26. 3 and 4 as shown in FIGS. 3 and 4, by engaging the engaging claws 23a to 26a provided on the operation piece entering groove 14, the pressing force avoiding portion 15, the erroneous insertion preventing groove 16, and the loading concave portion 17, respectively. The disc cartridge 1 is attached. At this time, the opening closing plate 22 closes the head opening 13 by covering the entire other surface of the cartridge body 5. Moreover, when the protection member 21 is attached, the opening part obstruction board 22 fits into the side surface opening part 13a. The head opening 13 provided in the cartridge body 5 is sealed by the opening closing plate 21 and the opening closing plate 22.

  By attaching the protective member 21 according to the present invention, the head opening 13 is closed, so that it is possible to prevent dust and fingers from entering the disk cartridge 1 and the optical disk 6 housed in the disk cartridge 1. Can be protected.

  Further, as shown in FIG. 3, the protection member 21 according to the present invention is attached to the disc cartridge 1 with the other surface of the cartridge body 5 left open, so that it is attached to the other surface of the cartridge body 5. The label or printing unit describing the recording contents to be provided can be exposed to the outside as it is, and the display function of the display unit provided in the disk cartridge 1 is not impaired.

  By the way, the disk recording and / or reproducing apparatus to which the disk cartridge 1 is mounted is provided with a cartridge insertion / removal opening for inserting / removing the disk cartridge 1. The cartridge insertion / removal port is formed to have a size suitable for the disc cartridge to be mounted in order to prevent insertion of disc cartridges other than the specified one, so that the irregularly shaped disc cartridge is not mounted.

Since the protective member 21 according to the present invention is attached so that the opening closing plate 21 is superposed on one surface side of the cartridge main body 5, as shown in FIG. 3 and FIG. The entire thickness of the disk cartridge 1 is increased. Therefore, as shown in FIGS. 4 and 5, the opening closure plate 21 thickness D ₁ of more than a certain thickness Satoshi, when attached to the disc cartridge 1, a defined thickness D ₂ of the disk cartridge 1 thickness By setting it as above, it can be set as the erroneous insertion prevention part to a disc recording and / or reproducing | regenerating apparatus.

  Further, the protective member 21 according to the present invention has an error in the disk recording and / or reproducing apparatus by making the planar shape of the opening blocking plate 21 larger than the planar shape of the cartridge body 5 as shown in FIG. It can be set as an insertion prevention part.

  In the above description, the opening closing plate 21 has been described with an example in which it is formed to have a size sufficient to cover the entire surface on one side of the cartridge body 5, but at least to cover the head opening 13. Engagement claw pieces 23 to 26 that are large enough to engage with the operation piece entry groove 14, the pressing force avoiding portion 15, the erroneous insertion preventing groove 16, and the loading recess portion 17 provided on the side surface of the cartridge body 5 are peripheral. However, the size is not limited to the above example.

  In the above description, since the protective member 21 according to the present invention can be detachably mounted on any disk cartridge 1 having a common configuration, the protective member 21 is described as constituting the present invention. Since this protective member 21 is also configured to form one disk cartridge in combination with a specific disk cartridge, the present invention includes the disk cartridge.

  As described above, the protection member 21 for the disk cartridge according to the present invention is attached to the disk cartridge 1 to reliably close the head opening 13 and reliably protect the optical disk 6 accommodated in the disk cartridge 1. Can be planned.

  In the above description, an example of using a disk cartridge containing an optical disk has been described. However, it goes without saying that the present invention can be widely applied to a disk cartridge containing a disk such as a magnetic disk or a magneto-optical disk.

It is the perspective view which looked at the protection member for disk cartridges concerning this invention, and the disk cartridge to which this protection member is attached from the upper half side. It is the perspective view which looked at the protection member for disk cartridges concerning this invention, and the disk cartridge to which this protection member is attached from the lower half side. It is the perspective view which looked at the state which attached the protection member concerning the present invention to the disc cartridge from the upper half side. It is the perspective view which looked at the state which attached the protection member based on this invention to the disc cartridge from the lower half side. It is a side view which shows the state which attached the protection member based on this invention to the disc cartridge. It is a perspective view which shows the other example of the protection member which concerns on this invention with a disc cartridge.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Disc cartridge, 5 Cartridge main body, 6 Optical disk, 13 Head part opening part, 14 Operation piece entrance groove, 15 Pressing force avoidance part, 16 Incorrect insertion prevention groove | channel 16, 17 Loading recessed part, 21 Protection member, 22 Opening part obstruction | occlusion Plate, 23-26 engaging claw piece

Claims (6)

An opening closing plate that covers an opening that allows a part of the disk provided on one surface of a disk cartridge that rotatably stores the disk to face outward across the inner and outer circumferences;
A cartridge support that engages with a side surface of the disk cartridge and supports the opening closing plate on the disk cartridge;
The opening closing plate has a size equal to or larger than the planar shape of the disk cartridge,
A protective member for a disk cartridge, wherein the opening closing plate covers the entire surface of one surface of the disk cartridge and is supported by the disk cartridge in a state where the other surface of the disk cartridge is not covered .   2. The protection member for a disk cartridge according to claim 1, wherein the cartridge support part is engaged with a recess provided on a side surface of the disk cartridge to support the disk cartridge.   The said opening obstruction | occlusion board is an erroneous insertion prevention part which prevents the erroneous insertion to the disc recording and / or reproducing | regenerating apparatus of the said disc cartridge when attached to a disc cartridge. Item 3. A protective member for a disk cartridge according to Item 2.   The opening closing plate includes an erroneous insertion prevention unit that increases the thickness of the disk cartridge or increases the planar shape of the disk cartridge to prevent the disk cartridge from being erroneously inserted into the disk recording and / or reproducing apparatus. 4. The protective member for a disk cartridge according to claim 3, wherein the protective member is a disk cartridge.   5. The protection for a disk cartridge according to claim 1, wherein the opening blocking plate is made of a transparent material that allows one side of the disk cartridge to be seen through. Element. A disc,
A cartridge main body that accommodates the disk in a rotatable manner, and has an opening formed on one side to face a part of the disk outward over the inner and outer circumferences;
An opening closing plate that closes the opening and covers one side of the cartridge body; and a protection member that includes a support portion that supports the opening closing plate on the cartridge body,
The opening closing plate has a size equal to or larger than the planar shape of the disk cartridge,
2. The disk cartridge according to claim 1, wherein the protective member is supported in a state where the opening closing plate covers the entire surface of one surface of the disk cartridge and does not cover the other surface of the disk cartridge.

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