JP4920107B2 - Protective cover for disc-shaped recording media - Google Patents

Description

  The present invention relates to a protective cover for a disk-shaped recording medium for protecting a recording portion of a disk-shaped recording medium such as a CD (compact disk) or a DVD, and more particularly to a disk-shaped recording medium that protects only one surface of the disk. Regarding protective cover.

  Disc-shaped recording media such as CDs that record music data, etc., and DVDs that record various information such as video and games may not be able to be reproduced if the data recording surface is damaged. In order to protect the surface, conventionally, a case having a plastic body and an openable / closable lid, a paper case, a film case, and the like are generally used for carrying and storage.

  The recording surface or reading surface of the disk-shaped recording medium is one main surface of the recording medium, and generally the back side of the surface on which printing or the like has been performed is the data recording surface. Yes. As a protective cover for such a disk-shaped recording medium, several covers have a structure covering only one main surface of the recording medium, and the base is made larger than the disk-shaped recording medium from a flexible material. An example (see, for example, Patent Document 1) or an example in which printing is performed on a part of a base that protects a disk-shaped reading surface to compensate for a missing print portion in a disk-shaped recording medium (for example, see Patent Document 2). Further, an example in which a holding claw is provided on the outer peripheral portion of a disk-shaped main body to form a protective cover for a disk-shaped recording medium (for example, see Patent Document 3) is known.

JP 2002-264985 A JP 2002-334554 A JP 2005-96813 A

  However, with the protective cover for the disk-shaped recording medium as described above, it may not be easy to remove only the disk-shaped recording medium from the state where the disk-shaped recording medium is mounted on the protective cover. That is, by using such a protective cover that covers only the recording surface side of the disk-shaped recording medium, storage using the printing surface of the disk-shaped recording medium can be performed, and the conventional plastic body can be freely opened and closed. Space saving can also be realized as compared with the case of storing using a case having a lid. However, in the techniques described in the above-mentioned patent documents, when removing the disk-shaped recording medium from the protective cover, it is necessary to operate members such as a base constituting the protective cover while holding the disk-shaped recording medium. Or the claw member facing the center hole or outer periphery of the disc-shaped recording medium must be operated, and it is necessary to remove the disc-shaped recording medium from the protective cover while operating the claw member. It takes time to remove the cover.

  Therefore, in view of the above technical problems, the present invention is a protective cover that covers the recording surface side of the disc-shaped recording medium so that the recording surface does not come into contact, and can be easily handled when the disc-shaped recording medium is attached or detached. The purpose is to provide such a protective cover.

In order to solve the above technical problem, the protective cover for the disk-shaped recording medium of the present invention is a protective cover made of resin that covers the recording surface of the disk-shaped recording medium and protects the recording surface of the disk-shaped recording medium. The diameter of the protective cover is made smaller than the diameter of the disc-shaped recording medium, and the outer peripheral portion of the protective cover is in contact with the margin portion of the recording area on the recording surface of the disc-shaped recording medium, The cover body of the protective cover is an area between the outer peripheral part and the inner peripheral contact part that contacts the margin part on the inner peripheral side of the recording area on the recording surface of the disc-shaped recording medium. spaced from the surface, the outer peripheral portion is a tapered wall thickness rises from the cover body toward the outside is thinner, the protective cover the disc-shaped Stories When attached to the medium, and an end portion of the outer peripheral portion is pressed against the disc-shaped recording medium by the repulsive force due to elastic deformation of the protective cover.

  According to a preferred embodiment of the present invention, the annular cover is fitted into the center hole of the disc-shaped recording medium from the inside, and the protective cover is configured by having a protrusion at the center of the ring projection. In the area on the back surface side of the protective cover corresponding to the annular projecting portion, when another protective cover is laminated, a recess for accommodating the end of the annular projecting portion of the other protective cover is provided. It can also be formed. Moreover, you may form the inclined surface for the side slip prevention at the time of stacking in the recessed part which accommodates the edge part of the cyclic | annular protrusion part of another protective cover.

Furthermore, the protective cover for the disc-shaped recording medium of the present invention is provided with a notch in a part of the annular projecting portion, and the center hole so as to press the center hole of the disc-shaped recording medium outward. The nail | claw part engaged with the edge part of this may have the structure arrange | positioned by the said notch part .

  According to the protective cover for the disk-shaped recording medium of the present invention, the diameter of the protective cover is made smaller than the diameter of the disk-shaped recording medium, so that when the disk-shaped recording medium with the protective cover is held with one hand, A finger comes into contact with the outer peripheral portion of the disc-shaped recording medium, and the disc-shaped recording medium is gripped in a state where the finger does not directly hit the protective cover. Therefore, while holding the outer periphery of the disc-shaped recording medium with the thumb, ring finger, little finger, etc., the projection formed at the center of the protective cover is pushed with the index finger, so that the protection cover and the disc-shaped recording medium can be separated with one hand. This is possible, and handling is easy when the disk-shaped recording medium is attached or detached.

1 is a perspective view showing an embodiment of a protective cover for a disk-shaped recording medium according to the present invention, in a state where the disk-shaped recording medium and the protective cover are separated. FIG. 1 is a perspective view showing an embodiment of a protective cover for a disk-shaped recording medium according to the present invention, and is a view showing a state where the protective cover is attached to and held by the disk-shaped recording medium. It is a top view which shows one Embodiment of the protective cover of the disk-shaped recording medium of this invention. It is a side view which shows one Embodiment of the protective cover of the disk-shaped recording medium of this invention. It is a fragmentary sectional view showing one embodiment of a protective cover of a disk-shaped recording medium of the present invention, and is a figure shown with a disk-shaped recording medium. It is a fragmentary sectional view which shows one Embodiment of the protective cover of the disc-shaped recording medium of this invention, and the cross section itself is shown by hatching. It is a perspective view of the nail | claw part of one Embodiment of the protective cover of the disk-shaped recording medium of this invention. It is a top view of the nail | claw part of one Embodiment of the protective cover of the disk-shaped recording medium of this invention. It is a perspective view which shows the state which laminated | stacked one Embodiment of the protective cover of the disk-shaped recording medium of this invention.

  A protective cover for a disk-shaped recording medium according to a preferred embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 4, the protective cover 2 for the disk-shaped recording medium according to the present embodiment is an example used for protecting the recording surface of a disk 1 having a diameter of 120 mm, such as a CD or DVD, as a disk-shaped recording medium. Show. There are various disk-shaped recording media, and the protective cover 2 of the disk-shaped recording medium of the present invention is configured in a disk shape with dimensions according to the size of the disk-shaped recording medium. Therefore, the protective cover itself is also made small for a small size disk. In the present embodiment, the diameter of the protective cover 2 is set to a slightly smaller size corresponding to the disk 1, and is set to a diameter of 118 mm, for example. Therefore, when the center of the disk 1 and the center of the protective cover 2 are aligned and the protective cover 2 is attached to the disk 1, the disk 1 protrudes outside the protective cover 2 by about 1 mm across as shown in FIG. Will be mounted as follows.

  The disk 1 has one surface as a recording surface, and a hole 4 having a diameter of 15 mm is provided at the center. A printing surface 3 is formed on the main surface opposite to the recording surface of the disk 1. Since the recording area on the recording surface of the disk 1 is formed in a range from the inner diameter of 50 mm to the outer diameter of 116 mm at the maximum, the area having a width of 17.5 mm in the radial direction outside the hole 4 of the disk 1 is a blank area. Similarly, an area having a width of 2 mm in the radial direction from the outermost peripheral part 5 of the disk 1 is an outer margin part which is a blank area. Therefore, even if the recording surface of the disk 1 is configured to contact the margin portions, the protective cover 2 is configured so as not to damage the recording area of the disk 1 and to reliably read out the signal. Is possible.

  The protective cover 2 is formed using a relatively inexpensive general-purpose plastic material such as polyethylene, polypropylene, or polystyrene as a main material, and can be mass-produced using a plastic molding technique such as injection molding. The protective cover 2 is composed of a generally disc-shaped cover body 10 and has an outer peripheral portion 11 that rises obliquely, an inner peripheral abutment portion 12 that abuts on the inner peripheral side of the recording surface of the disk 1, and three claw portions. 14 is provided with an annular projecting portion 13 provided with 14 and a projection portion 16 for pressing with a finger or the like. The cover body 10, the outer peripheral portion 11, the inner peripheral abutting portion 12, the annular projecting portion 13, the claw portion 14, and the projecting portion 16 are integrally formed of resin.

  The cover main body 10 of the protective cover 2 is a substantially disc-shaped portion, and is formed with a thickness of approximately 1 mm. The outer peripheral portion 11 of the protective cover 2 has a shape that rises from the cover main body 10 and becomes thinner as it goes outward, and when the protective cover 2 is attached to the disk 1, the end portion 11 t of the outer peripheral portion 11. Is pressed against the disk 1 by a repulsive force due to elastic deformation of the protective cover 2. That is, as shown in FIGS. 5 and 6, the outer peripheral portion 11 has a tapered shape and has a shape rising from the surface 10 s of the cover main body 10 so as to protrude obliquely in cross section, and when the disc 1 is not mounted. Since it rises about 1.3 mm, a space can be secured between the surface of the cover body 10 and the disk 1 and the recording area of the recording surface of the disk 1 can be protected. Since the outer peripheral portion 11 has a tapered shape, when the disc 1 is mounted, the narrowed end portion comes into close contact with the recording surface of the disc 1 by a repulsive force caused by bending flexibly. The portion with which the end portion 11t of the outer peripheral portion 11 abuts is the outer peripheral margin portion having a width of 2 mm from the outermost peripheral portion of the disk 1 from the position of the outer peripheral portion 11, and the end portion 11t of the outer peripheral portion 11 is directly the outer peripheral margin portion. Even if it is in contact with the signal, the portion where the signal is recorded is not affected, and the signal can be read reliably.

  In the protective cover 2, an inner peripheral contact portion 12 is formed at an inner peripheral margin portion facing the outer peripheral portion 11 across the recording area of the recording surface of the disk 1. The inner peripheral abutting portion 12 is an annular ridge protruding from the surface 10s of the cover main body 10 so as to have a substantially hemispherical cross section. The inclination is close to an arc on the inner peripheral side of the contact portion 12. The height of the inner peripheral contact portion 12 protruding from the surface 10s of the cover main body 10 is approximately 1 mm, and is approximately the same as the height of the end portion 11t of the outer peripheral portion 11 that is bent when contacting the disk 1 when the disc 1 is mounted. Of height. Since the inclination is gentle on the outer peripheral side of the inner peripheral contact portion 12, the end portion 11t of the outer peripheral portion 11, the cover body 10, and the inner peripheral contact portion 12 are arched in cross section around the recording area of the disc 1. The repulsive force against the elastic deformation in this region can be increased.

  The annular projecting portion 13 is a member that is erected in a cylindrical shape from the surface 10 s of the cover body 10 and fits into the inner wall of the hole 4 of the disc 1 when the disc 1 is mounted, and has three notches at the circumferential direction. 19 is formed, and a claw portion 14 is provided in each notch 19. By aligning the hole 4 of the disk 1 with the annular projecting portion 13, the center of the disk 1 and the protective cover 2 can be aligned. The height of the annular projecting portion 13 is configured such that, for example, an inclined portion of about 1 mm is provided in a bevel shape from the surface 10 s of the cover main body 10 and rises vertically by about 2 mm therefrom. A projecting portion 16 is provided at the center of the annular projecting portion 13, and when the disc 1 mounted on the protective cover 2 is removed, the projecting portion 16 is pushed with an index finger or the like so that the outer periphery of the disc 1 is moved. The protective cover 2 can be easily removed from the disk 1 while being held by another finger, for example, a thumb, a ring finger, or a child finger. A tapered portion 13t is provided at the upper end of the annular projecting portion 13 so that the inside is high and the outside is low, and is attached to the protective cover 2 by the cooperative action with the tapered portion 17 of the recess 18 as will be described later. When the discs 1 are stacked, the center of the disc 1 can be positioned.

  The annular projecting portion 13 is formed with notches 19 penetrating the cover main body 10 at three locations around it, and a claw portion 14 is formed at the center of the notch 19. The claw portion 14 abuts against the inner wall of the hole 4 of the disc 1 and is structured such that the front end side of the claw portion 14 is elastically deformed and engaged with the disc 1 mounted on the protective cover 2. The engaging portion 22 of the claw portion 14 is pressed against the inner wall of the hole 4 of the disc 1 by a repulsive force due to the elastic deformation of the claw portion 14, and the disc 1 is fixed to the protective cover 2. FIGS. 7 and 8 are enlarged views of the claw portion 14, and the claw portion 14 has a shape bent in a substantially L shape from a base portion 23 that is horizontally extended from the cover body 10. A tapered portion 21t for facilitating the guide of the disk 1 is provided at the upper end portion 21 of the claw portion 14. An engaging portion 22 having a shape that slightly overhangs is formed on the base portion 23 of the claw portion 14, and this engaging portion 22 is used to fix the inner surface of the hole 4 of the disk 1 when the disk 1 is fixed to the protective cover 2. The disk 1 is fixed by being pressed at a total of three positions. On the opposite side of the engaging portion 22, an inner wall portion 24 disposed substantially concentrically except for the inner surface of the annular projecting portion 13 and the notch portion 19 is located, and below the inner wall portion 24, A tapered portion 25 is formed at a position common to the tapered portion 17 of the concave portion 18 described later.

  When the disc 1 is mounted on the claw portion 14 having such a shape, the disc 1 is pushed down along the axial direction of the annular projecting portion 13. Then, a force is applied from the inner wall of the hole 4 of the disc 1 so as to push the engaging portion 22 of the slightly overhanging claw portion 14 inward, and the entire claw portion 14 is elastically deformed inward by this force. By this elastic deformation, the engaging portion 22 continues to press the inner wall of the hole 4 of the disc 1, and the disc 1 is securely fixed to the protective cover 2 together with the friction of the outer peripheral portion of the annular projecting portion 13. . When the disc 1 is removed, the disc 1 may be moved so as to be pulled out along the annular projecting portion 13 against the pressing force from the engaging portion 22. For example, the protective cover 2 can be easily removed from the disc 1 while the outer periphery of the disc 1 is held by another finger, for example, thumb, ring finger, or child finger.

  On the back surface side of the protective cover 2, a concave portion 18 is formed for accommodating the end portion of the annular projecting portion 13 of the other protective cover when another protective cover is laminated. That is, with the disc 1 mounted on the protective cover 2, the upper end of the annular projecting portion 13 is projected from the upper surface of the disc 1 by about 0.5 to 1.0 mm, and the concave portion is formed so as to accommodate the projected portion. 18 is formed, and can be laminated by being protected by the protective cover 2 so as to accommodate the upper end of the annular projecting portion 13 in the recess 18. FIG. 9 is a perspective view showing a state in which the discs 1 mounted on the protective cover 2 are stacked. When a plurality of discs 1 protected by the protective cover 2 are stacked so that the upper end of the annular projecting portion 13 is accommodated in the recess 18, the upper end having the tapered portion 13 t of the annular projecting portion 13 is the periphery of the recess 18. Since the center axis is positioned so as to be guided by the tapered portion 17 at the end, the layers can be laminated relatively easily. Furthermore, since the gap between the plurality of discs 1 is only the thickness of the cover main body 10, it does not require a volume even when stacked, and the space is significantly reduced compared to a case that requires a conventional lid that opens and closes. Is realized. Moreover, required printing, sticking of a sticker, embossing of a character, a mark, etc. are given to the back surface of the protective cover 2, and the said protective cover 2 itself can be utilized as an item for sales promotion.

  The protective cover 2 according to the present embodiment having the above-described structure is shown in FIG. 2, when the user first grasps the disk 1 attached to the protective cover 2 with one hand, as shown in FIG. 8, the disc 1 can be gripped. In particular, the disc 1 attached to the protective cover 2 can be easily gripped by the thumb 81, the other ring finger 82, the little finger 83, or the like. At this stage, the protective cover 2 does not protrude from the outer periphery of the disk 1 and is easy to handle.

  Also, when removing the protective cover 2 from the disk 1, the disk 1 can be detached from the protective cover 2 by operating with one hand. That is, from the opposite side of FIG. 2, the outer peripheral portion of the disk 1 is grasped with the thumb 81, other ring finger 82, little finger 83, etc., and the projection 16 at the center of the protective cover 2 is pushed with the remaining middle finger or index finger. Then, the disk 1 is relatively lifted from the protective cover 2 along the axial direction of the annular projecting portion 13, and the disk 1 is removed from the protective cover 2 against the pressing force of the engaging portion 22 of the claw portion 14 described above. As a result, the disk 1 and the protective cover 2 are separated. Such a separation operation of the disk 1 and the protective cover 2 can be operated with one hand in the present invention, and it can be seen that the convenience of handling the protective cover 2 is excellent.

  Further, as shown in FIG. 9, when a plurality of disks 1 protected by the protective cover 2 are stacked in the recess 18 so as to accommodate the upper end of the annular projecting portion 13, the tapered portion of the annular projecting portion 13 is used. Since the upper end having 13t is guided to the tapered portion 17 at the peripheral end of the recess 18 and positioned so that the central axis is concentric, the disk 1 can be stacked relatively easily. Furthermore, since the gap between the plurality of discs 1 is only the thickness of the cover main body 10, it does not require a volume even when stacked, and the space is significantly reduced compared to a case that requires a conventional lid that opens and closes. Is realized.

  In the present embodiment, the protective cover for the 120 mm disc-shaped recording medium has been described mainly with dimensions, but the protective cover of the present invention is effective for other sizes of the disc-shaped recording medium. Similar effects can be achieved by adapting the size. In the present embodiment, the claw portion 14 is provided at three positions as means for fixing the disk 1. However, as a means for fixing the disk to the protective cover, one having another structure can be used. . In the present embodiment, the disk-shaped recording medium is mounted on one side of the protective cover. However, the back surfaces of the protective cover are bonded to each other or the cover body is made common so that both sides of the protective cover are shared. It is also possible to realize a protective cover for a disk-shaped recording medium having a structure for holding the disk on the disk.

DESCRIPTION OF SYMBOLS 1 Disc 2 Protective cover 3 Printing surface 4 Hole 5 Outermost peripheral part 8 Hand 10 Cover main body 11 Outer peripheral part 11t End part 12 Inner peripheral contact part 13 Annular protruding part 14 Claw part 16 Protruding part 17 Tapered part 18 Recessed part 19 Notch Part 21 upper end part 21t taper part 22 engagement part 23 base part 24 inner wall part 25 taper part 81 thumb 82 ring finger 83 little finger

Claims (5)

A protective cover made of resin that covers the recording surface of the disk-shaped recording medium and protects the recording surface of the disk-shaped recording medium,
The diameter of the protective cover is made smaller than the diameter of the disc-shaped recording medium, and the outer peripheral portion of the protective cover is in contact with the margin portion on the outer peripheral side of the recording area on the recording surface of the disc-shaped recording medium. The cover body of the protective cover is separated from the recording surface of the disc-shaped recording medium in a region between the inner peripheral contact portion that contacts the margin portion on the inner peripheral side of the recording region on the recording surface of the recording medium and the outer peripheral portion. The outer peripheral portion has a tapered shape that rises from the cover body and decreases in thickness as it goes outward, and when the protective cover is attached to the disc-shaped recording medium, the end of the outer peripheral portion is A protective cover for a disk-shaped recording medium, wherein the protective cover is pressed against the disk-shaped recording medium by a repulsive force due to elastic deformation of the protective cover.   2. The disc-shaped recording according to claim 1, further comprising an annular projecting portion fitted into a center hole of the disc-shaped recording medium from the inside, and a projecting portion at the center of the annular projecting portion. Medium protective cover.   In the area on the back surface side of the protective cover corresponding to the annular projecting portion, a recess is formed for accommodating the end portion of the annular projecting portion of the other protective cover when another protective cover is laminated. The protective cover for a disk-shaped recording medium according to claim 2.   4. The protective cover for a disk-shaped recording medium according to claim 3, wherein the concave portion is formed with an inclined surface for preventing lateral displacement during stacking.   A cutout portion is provided in a part of the annular projecting portion, and a claw portion that engages with an end portion of the center hole so as to press the center hole of the disc-shaped recording medium outward. 3. The protective cover for a disk-shaped recording medium according to claim 2, wherein the protective cover is disposed in a portion.