JP2007153377A - Disk case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk case whose case cover body and case body do not easily come off even if a soft resin such as polypropylene is used for the case. <P>SOLUTION: A case cover body 1 is provided with a hinge shaft 15. A case body 3 has a hinge bearing hole 37. The shaft 15 has a roughly cylindrical shape protruding on the side wall 17 of the cover body 1 and has a through hole 27 crossing the center axis of the roughly cylindrical shape. The roughly circular hinge bearing hole 37 is formed at the side wall 35 of the body 3 and opened at one end face of the side wall 35 by an insertion opening 45 comprising a notch formed at the one end face side of the side wall 35. The smallest width of the opening 45 is shorter than the diameter of the shaft 15, and formed in a size for the shaft 15 to be pushed into the hole 37. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a disk case for storing a disk such as a CD or a DVD, and in particular, one of a case lid and a case body is provided with a hinge shaft, and the other is provided with a hinge bearing hole for receiving the hinge shaft. Further, the present invention relates to a disk case in which a hinge bearing hole is fitted and a case main body and a case lid are pivotally supported.

As a learning material for distance learning, a videotape recording a lecture along with text is usually mailed to a customer. Recently, instead of videotapes, DVDs with the same contents are sent.
Traditionally, CDs that record simple information such as music, company information, and advertisements are stored in enveloped paper cases or simple CD cases made of resin, mailed to books, or put on the distribution market. It was done. In use as a learning material for distance learning, long-time video information such as lectures and experiments is also included, so the amount of information may be enormous, and a DVD with a large recording capacity is used instead of a CD.

  Due to the structure in which two DVDs are laminated, it is necessary to pay more attention to bending load than CDs. In the case of use as a teaching material, it is handled in the same way as a book, such as keeping it in a bookshelf together with a book when not in use. For storing DVDs, a simple case made of envelope-like paper or resin only for protecting the surface of a CD, such as a CD case used as an appendix of a book, is not usually used.

When mailing to customers as correspondence learning materials, the case is required to be hard to break. In addition, since users include not only adults but also many infants and elementary school children, cases that are made of a soft material resin are required to prevent accidental injury by stepping on the case. ing.
Moreover, since it is a DVD as a learning material, it does not need to be permanently stored indefinitely, so the case needs to be as low as possible while satisfying these conditions.

Furthermore, it is preferable from the viewpoint of cost that an existing disk case automatic assembly machine that automatically performs everything from case assembly to storage and packaging of disks and booklets can be used as it is.
The main existing disk case automatic assembly machine that is widely used at present is a three-piece case (vertical) called a jewel case, which is made of a transparent hard resin, such as polystyrene, for storing a CD, and in which a disk holding tray is stored. 124.5 mm × width 142.0 mm × thickness about 10.4 mm). The automatic assembly machine for jewel case is made of hard resin, such as polystyrene, and has a two-piece slim type case (length 124.5mm x width 142.0mm x width) that eliminates the disc holding tray compared to the jewel case. It is also applied to assembling with a thickness of about 5.2 mm.
There is also an assembly machine for a case (vertical 190 mm × horizontal 136 mm × thickness 15 mm) made of a soft resin such as polypropylene and called a DVDPP case for storing a DVD.

  Conventionally, as a case for storing a DVD as a learning material for correspondence education, a DVDPP case widely used as a case for storing a DVD for movies and video game software has been used as it is.

  It is necessary to reduce the case size in order to further reduce the cost while maintaining the requirements for the case for storing the DVD as the learning material. In other words, if it is assumed that an existing automatic assembly machine is used, if the same soft resin as the DVDPP case is used, a jewel case made of hard resin or a size comparable to a two-piece slim type case can be realized. Most preferred. If a soft resin can be used to achieve the same size as a jewel case or a two-piece slim case, a significant resin cost reduction of 30% or more can be realized compared to a DVDPP case.

A DVDPP case molded using a soft resin is integrally molded using a folding-type integral hinge portion for connecting the case lid and the case body (see, for example, Patent Document 1).
On the other hand, in the jewel case and the two-piece slim type case molded using a hard resin, the case lid and the case main body are separately molded, and the hinge shaft and the hinge bearing hole provided in each are fitted. A fitting connection type hinge portion is used (for example, see Patent Document 2).
Therefore, when trying to downsize the case for storing DVDs for educational materials and trying to make it the same size as a jewel case or a two-piece slim case, the case lid and case body are molded separately as in the jewel case. In order to use an automatic assembly machine that is designed on the assumption that the hinge portion connecting them is a fitting connection type structure, the same separation type fitting connection structure is used while using a soft resin. It is necessary to use the hinge part structure.

JP 2001-192035 A JP 2005-112453 A

  Form the case lid and case body separately using a soft resin such as polypropylene, and provide a hinge bearing hole for receiving the hinge shaft protrusion on one of the case lid and case body and the hinge shaft protrusion on the other. When a hinged structure with a mating connection type such as a jewel case is used, the disc case is a flat box type case with a small thickness and close to a flat plate shape. There was a problem that the fitting of the parts easily disengaged and the state shown in FIG.

  Therefore, an object of the present invention is to provide a disc case that can prevent the case lid and the case main body from being easily detached even when a soft resin such as polypropylene is used.

A disc case according to the present invention includes a case lid and a case body, and is provided on a hinge shaft provided on a first side wall constituting one of the case and a second side wall opposed to the first side wall and constituting the other. It is a disc case in which a case lid and a case main body are combined so as to be openable and closable by coupling with a hinge bearing hole for receiving the hinge shaft. The hinge shaft has a substantially cylindrical shape protruding from the first side wall, has a through-hole that crosses the central axis of the substantially cylindrical shape, and the hinge bearing hole has a substantially cylindrical shape provided on the second side wall. It is circular and is opened to the one end surface by a notch formed by a notch formed on one end surface side of the second side wall, and the width dimension of the narrowest portion of the fit inlet is smaller than the diameter of the hinge shaft. The hinge shaft is formed in a size that can be press-fitted into the hinge bearing hole.
Here, the substantially cylindrical shape means that the hinge shaft is not strictly cylindrical because the through-hole is formed in the hinge shaft. Moreover, it is not limited to a hinge axis | shaft with constant thickness with respect to an axial direction, It means that the thing from which thickness changes is also included.

In a preferred embodiment, the hinge shaft has a through hole that crosses the substantially cylindrical central axis, and has a flange at the tip, and the flange has a wide through direction of the through hole of the hinge shaft and a narrow direction perpendicular thereto. The case main body or the case lid body having the formed shape and having the hinge bearing hole is connected to the one end surface of the second side wall and extends in a direction perpendicular to the second side wall and away from the first side wall. And has an opening that is connected to the fitting inlet and receives the collar portion on the surface thereof, and the width dimension of the opening is smaller than the dimension of the wide portion of the collar portion.
Here, the width dimension of the opening means a dimension in a direction parallel to the surface on which the opening is formed and the second side wall.
In addition, in the claims and in the present specification, the terms orthogonal and parallel are orthogonal or parallel to the extent that two surfaces to be orthogonal or parallel can perform their functions even if they are not strictly orthogonal and parallel. Including that it may deviate from parallel.

  In the disk case of the present invention, it is preferable that the fitting opening is formed such that the dimension of the one end face side of the second side wall is larger than the dimension of the hinge bearing hole side.

  The case lid or the case main body on which the hinge shaft is formed preferably includes a first reinforcing surface formed continuously with the first side wall in a direction orthogonal to the first side wall.

  It is preferable that the case main body or the case lid in which the hinge bearing hole is formed includes a second reinforcing surface formed continuously from the second side wall in a direction orthogonal to the second side wall.

  It is preferable that the surface of the case main body on the disk housing side is provided with a recess at at least one position corresponding to the peripheral edge of the disk.

  The through hole of the hinge shaft is preferably formed in a direction orthogonal to the plane of the case lid or case body in which the hinge shaft is formed.

  The material of the case lid and the case body is preferably a so-called soft resin or soft soft resin such as a polypropylene resin, a polyethylene resin, a resin obtained by mixing a polystyrene resin with a rubber resin, or an ABS resin.

In the disk case of the present invention, the hinge shaft formed on either the case lid or the case body is substantially cylindrical, and the hinge bearing hole formed on the other of the case lid or case body Since the hinge shaft is press-fitted into the hinge bearing hole through the fitting inlet so that the case body and the case lid are pivotally supported. A jewel case made of a conventional hard resin, in which a hinge shaft is fitted while a pair of hinge pieces provided with hinge bearing holes as shown in FIG. The hinge shaft can be made longer than that of the piece slim type case, and even when a soft resin such as polypropylene is used, it is possible to prevent the case lid and the case main body from being easily detached.
In a preferred embodiment, if the hinge shaft is provided with a through hole that crosses the central axis, the elastic contractibility in the radial direction of the hinge shaft can be increased when the hinge shaft is press-fitted into the hinge bearing hole. Thereby, the width dimension of the narrowest part of the fitting opening formed continuously to the hinge bearing hole is made narrower, and the fitting stability when the hinge shaft and the hinge bearing hole are fitted is improved. The hinge shaft can be prevented from falling off.
Furthermore, by providing a through hole in the hinge shaft, it is possible to prevent sink marks caused by cooling and shrinkage of the hinge shaft during molding, so the axial accuracy and radial dimensional accuracy of the hinge shaft are improved. This can prevent the hinge shaft from falling off.

When the through hole is provided in the hinge shaft, the width in the through direction of the hinge shaft is slightly shorter than the shaft diameter, so that the through direction of the hinge shaft and the fitting inlet are fitted with the hinge shaft and the hinge bearing hole fitted. When the narrowest part becomes parallel, the hinge shaft easily moves to the fitting entrance side.
Therefore, as a preferred form, the hinge shaft is provided with a flange portion having a shape in which the penetrating direction of the through hole of the hinge shaft is wide and the direction perpendicular to the hinge shaft is narrow, and the hinge bearing hole is formed. If the case body or case lid is provided with an opening continuous to the fitting opening, and the width of the opening is made smaller than the dimension between the tips of the flanges, the hinge shaft and the hinge bearing hole are fitted. Even if the penetrating direction of the hinge shaft and the narrowest part of the fitting opening are parallel, the flange portion of the hinge shaft is caught on a surface continuous with one end surface of the second side wall in which the hinge bearing hole is formed. Dropout can be prevented. Further, since the flange portion is provided at the tip of the hinge shaft, it is possible to prevent the hinge shaft from being pulled out from the hinge bearing hole in the axial direction.

  Furthermore, if the dimension of the one end face side of the fitting inlet of the second side wall in which the fitting inlet is formed is formed larger than the dimension of the hinge bearing hole side, that is, if it is formed in a tapered shape, the hinge Positioning when the shaft is press-fitted into the hinge bearing hole is facilitated, and pressure applied to the hinge shaft when the hinge shaft is press-fitted into the hinge bearing hole can be reduced.

  Furthermore, the case lid or the case main body on which the hinge shaft is formed includes a first reinforcing surface formed continuously with the first side wall in a direction orthogonal to the first side wall on which the hinge shaft is formed. By doing so, it is possible to reduce the deflection of the first side wall and prevent the hinge shaft from falling off the hinge bearing hole.

  Furthermore, the case main body or the case lid in which the hinge bearing hole is formed includes a second reinforcing surface that is continuously formed on the second side wall in a direction orthogonal to the second side wall on which the hinge bearing hole is formed. By doing so, it is possible to reduce the deflection of the second side wall and prevent the hinge shaft from falling off the hinge bearing hole.

  Further, when the disc is removed, if the case main body is provided with a recess at one or a plurality of positions corresponding to the peripheral edge of the disc on the surface of the case main body facing the disc with the disc stored in the case main body. It is easy to put a finger on the disc at the recessed position.

  Furthermore, if the through hole of the hinge shaft is formed in a direction orthogonal to the case lid body or the plane of the case body where the hinge shaft is formed, the case lid body and the case body are overlapped. Since the hinge shaft can be press-fitted into the hinge shaft hole in a state where the hinge shaft is opened 180 degrees or in an open state, an existing automatic assembly machine can be used.

  Furthermore, the case lid and the case main body were injection-molded using a soft resin or a soft hard resin such as a polypropylene resin, a polyethylene resin, a resin obtained by mixing a polystyrene resin with a rubber resin, or an ABS resin. If it is made into a thing, the disk case which is hard to be broken and prevented that a case cover body and a case main body removed easily can be formed.

1A and 1B are diagrams showing a case lid according to an embodiment, in which FIG. 1A is a plan view, FIG. 1B is a cross-sectional view taken along the line A-A in FIG. 1A, and FIG. It is sectional drawing which expands and shows the cross section in B position.
2A and 2B are views showing a case main body of the embodiment, in which FIG. 2A is a plan view, FIG. 2B is a side view, and FIG. 2C is a cross-sectional view showing an enlarged cross-section at a CC position in FIG. (D) is sectional drawing which expands and shows the cross section of the DD position of (A).
FIG. 3 shows the vicinity of the hinge axis of the case lid (see the portion surrounded by the one-dot chain line in FIG. 1A) and the vicinity of the hinge bearing hole of the case body (the portion surrounded by the one-dot chain line in FIG. 2A). (A) is a plan view in the vicinity of the hinge axis of the case lid, (B) is a cross-sectional view at the EE position of (A), and (C) is the case main body. The top view of a hinge bearing hole vicinity, (D) is sectional drawing in the FF position of (C).
4A and 4B are enlarged views showing the vicinity of the disk locking claw of the case main body. FIG. 4A is a plan view, and FIG. 4B is a cross-sectional view taken along line GG in FIG.

The disk case of this embodiment is composed of a case lid 1 and a case body 3 which are injection-molded using, for example, polypropylene.
As shown in FIG. 1, the case lid 1 includes side walls 7 on the two opposing sides of the top plate 5. The thickness of the top plate 5 is, for example, 1.2 mm (millimeter), and the thickness of the side wall 7 is, for example, 1.2 mm. Two label restraining claws 9 project from the inner surfaces of the side walls 7, respectively. A through hole 11 is formed in the top plate 5 facing the upper surface of the label holding claw 9.

As shown in FIG. 1, hinge shaft placement portions 13, 13 are formed at both ends of one side different from the side walls 7, 7 of the top plate 5 of the case lid 1. Are provided in directions in which the hinge shafts 15 face each other.
More specifically, as shown in FIG. 1C, FIG. 3A and FIG. 3B, the hinge shaft placement portion 13 includes a side wall (first side wall) 17 for placing the hinge shaft 15 and Side walls (first reinforcing surfaces) 19, 21 formed continuously at both ends of the side wall 17 in a direction perpendicular to the side wall 17, and side walls 19, 21 facing the side wall 17 and perpendicular to the side walls 19, 21 21 is provided with a side wall 23 formed continuously at the end opposite to the side wall 17. The thickness of the side walls 17, 19, 21, 23 is, for example, 1.2 mm. A notch 19 a is formed on the end surface of the side wall 19 opposite to the top plate 5.

  A positioning pedestal 25 is formed with a thickness of 0.2 mm, for example, on the surface of the side wall 17 opposite to the side walls 19 and 21. A substantially cylindrical hinge shaft 15 is formed so as to protrude from the positioning base 25 in a direction perpendicular to the side wall 17. A through hole 27 is formed in the hinge shaft 15 so as to cross the central axis in a direction perpendicular to the top plate 5. A flange portion 29 is formed at the tip of the hinge shaft 15, and the flange portion 29 has a shape in which the penetration direction of the through hole 27 of the hinge shaft 15 is wide and the direction perpendicular thereto is narrow. The dimension W3 of the wide part of the flange part 29 is larger than the diameter φ1 of the hinge shaft 15.

  Examples of dimensions are as follows. For example, the height of the hinge shaft 15 from the side wall 17 is 2.9 mm, and the diameter φ1 is 3.95 mm. The through hole 27 has a width W1 of 1.4 mm and a length L1 of 2.3 mm. The width dimension W2 of the portion of the hinge shaft 15 where the through hole 27 is formed is 3.67 mm. The width dimension W3 of the wide part of the collar part 29 is 5.5 mm. Here, the through hole 27 is formed to have a length from the positioning base 25 to the flange portion 29.

The case body 3 will be described with reference to FIG.
A hinge bearing hole arrangement portion 33 is formed on one side of the bottom plate 31 of the case body 3. The thickness of the bottom plate 31 is, for example, 1.2 mm. A substantially circular hinge bearing hole 37 is formed in each of the side walls (second side walls) 35 and 35 provided at both ends of the hinge bearing hole arrangement portion 33.

  The hinge bearing hole arrangement portion 33 will be described with reference to FIGS. 3 (C) and 3 (D). Side walls (second reinforcing surfaces) 39 and 41 formed continuously from the side wall 35 in a direction perpendicular to the side wall 35 are formed on both sides of the side wall 35 where the hinge bearing holes 37 are formed. A surface 43 is continuously formed on the end surface of the side walls 35, 35, 39, 41 opposite to the bottom plate 31. The thickness of the side walls 35, 39, 41 and the surface 43 is, for example, 1.2 mm.

On the end surface of the side wall 35 on the side opposite to the bottom plate 31, a fitting opening 45 made of a notch continuous with the hinge bearing hole 37 is formed. An opening 47 that is continuous with the fitting opening 45 is formed in the surface 43. The opening 47 is for preventing the hinge shaft 15 from coming out of the hinge bearing hole 37 by receiving the flange portion 29.
An example of dimensions is shown below. For example, the diameter φ2 of the hinge bearing hole 37 is 4.05 mm. The width W4 on the hinge bearing hole 37 side, which is the dimension of the narrowest part of the insertion opening 45, is 3.4 mm, the width W5 on the surface 43 side of the insertion opening 45 is 4.0 mm, and the insertion opening 45 is on the surface 43 side. It is formed in a wide taper shape. The width dimension W6 of the opening 47 is 4.5 mm.

Here, the size relationship between the dimensions of the hinge shaft 15 and the vicinity of the hinge bearing hole 37 is organized.
The width W4 of the narrowest portion of the fitting opening 45, the diameter φ1 of the hinge shaft 15 and the diameter φ2 of the hinge bearing hole 37 are the minimum fitting width W4 <hinge shaft diameter φ1 <hinge bearing hole diameter φ2.
The width W6 of the opening 47, the width W3 of the wide portion 29 of the flange 29, and the width W7 of the narrow portion of the narrow portion W7 <opening width dimension W6 <wide of the flange 29. This is the dimension W3 of the part.

  Returning to FIG. 2, the description of the case body 3 will be continued. As shown also in (C), the hinge bearing hole arrangement portion 33 has a space surrounded by the side walls 35, 35, 39, 41 and the surface 43, and continues to the side walls 39, 41 and the surface 43 in parallel with the side wall 35. For example, three reinforcing plates 49 are formed. The thickness of the reinforcing plate 49 is, for example, 1.3 mm.

  For example, four recesses 51 are formed at positions corresponding to the peripheral edge of the disk on the inner surface of the bottom plate 31 facing the disk in a state where a disk such as a CD or DVD is accommodated. The depth of the recess 51 is, for example, 0.2 mm.

  A disc locking portion 53 is provided at the center of the bottom plate 31 to lock the disc by being fitted into the center hole of the disc. A ring-shaped protrusion 55 for supporting the disk is formed around the disk locking portion 53 on the inner surface of the bottom plate 31. For example, the protrusion 55 has a height of 0.5 mm and a width of 2.0 mm.

  As shown in FIG. 4, the disk locking portion 53 includes three disk locking claws 57 and a central protrusion 59 for restricting the movement of the disk locking claw 57 toward the center side. The front end of the disk locking claw 57 protrudes by, for example, about 2 mm toward the peripheral edge of the bottom plate 31 in parallel to the bottom plate 31 in order to hold the disk. In conventional disk cases using a hard resin such as polystyrene, there are many cases in which the tip of the disk locking claw has a protrusion having a substantially circular cross section. In this embodiment, polyethylene, which is a soft member, is used as the material of the case body 3. Therefore, the front end of the disk locking claw 57 protrudes so that the surface facing the bottom plate 31 is parallel to the bottom plate 31 so that the disk can be locked securely.

  As shown in FIGS. 5 and 6, the case lid 1 and the case main body 3 are arranged such that the hinge shaft 15 is disposed on the hinge bearing hole 37 at a position where the case lid 1 and the case main body 3 are opened after being connected. After that (see FIG. 5A), the hinge shaft 15 is press-fitted into the hinge bearing hole 37 through the fitting opening 45, and the case body 3 and the case lid 1 are pivotally supported (see FIG. 5). 5 (B) and FIG. 6).

  In this embodiment, the hinge shaft 15 formed on the case lid 1 has a substantially cylindrical shape, and is provided with a fitting inlet 45 continuous to the hinge bearing hole 37 formed in the case body 3. Since the hinge shaft 15 is press-fitted into the hinge bearing hole 37 through the fitting opening 45 so that the case body 3 and the case lid 1 are pivotally supported, the conventional jewel case and the two-piece slim The hinge shaft 15 can be made longer than that of the mold case. For example, even when polypropylene is used, it is possible to prevent the case lid 1 and the case main body 3 from being easily detached.

Further, since the hinge shaft 15 is provided with the through hole 27 that crosses the central axis, the elastic contractibility in the radial direction of the hinge shaft 15 can be increased when the hinge shaft 15 is press-fitted into the hinge bearing hole 37. Thereby, the width dimension W4 (see FIG. 3D) of the narrowest portion of the fitting entrance 45 is further narrowed, and the fitting stability when the hinge shaft 15 and the hinge bearing hole 37 are fitted is improved. Thus, the hinge shaft 15 can be prevented from falling off.
Furthermore, by providing the hinge shaft 15 with the through hole 27, it is possible to prevent sink marks caused by cooling shrinkage of the hinge shaft 15 during molding, and dimensional accuracy in the axial direction and the radial direction of the hinge shaft 15 can be prevented. There is also an effect that can be improved.

Further, in this embodiment, the through hole 27 is provided in the hinge shaft 15 so that the width dimension W2 in the penetration direction of the hinge shaft 15 is slightly shorter than the shaft diameter φ1 of the hinge shaft 15 (FIG. 3B ).
In this embodiment, the width dimension W2 (3.67 mm) in the penetrating direction of the hinge shaft 15 is set larger than the width dimension W4 (3.4 mm) of the narrowest portion of the fitting opening 45.

  However, as shown in FIG. 7, when the hinge shaft 15 and the hinge bearing hole 37 are fitted to each other, the penetration direction of the hinge shaft 15 and the narrowest portion of the fitting inlet 45 are parallel to each other. When the top plate 5 of the lid body 1 is perpendicular to the bottom plate 31 of the case body 3, there is a dimensional difference between the width dimension W2 in the penetrating direction of the hinge shaft 15 and the width dimension W4 of the narrowest portion of the fitting entrance 45. Since it is slight, the hinge shaft 15 is likely to move toward the fitting entrance 45.

Therefore, in this embodiment, the distal end portion of the hinge shaft 15 is provided with flange portions 29, 29, the surface 43 of the hinge bearing hole arrangement portion 33 is provided with an opening 47 continuous with the fitting entrance 45, and the width dimension W6 of the opening 47 is It was made smaller than the width dimension W3 of the wide part of the collar part 29,29. Accordingly, even if the hinge shaft 15 moves to the insertion opening 45 side in the state shown in FIG. 7, the flange portion 29 is caught on the surface 43, so that the hinge shaft 15 is prevented from dropping from the hinge bearing hole 37. be able to.
The flange portions 29 and 29 can also prevent the hinge shaft 15 from coming out of the hinge bearing hole 37 in the axial direction.

  In this embodiment, the fitting opening 45 is formed in a tapered shape. This facilitates alignment when the hinge shaft 15 is press-fitted into the hinge bearing hole 37, and the pressure applied to the hinge shaft 15 when the hinge shaft 15 is press-fitted into the hinge bearing hole 37 can be reduced. .

  The case lid 1 includes side walls 19 and 21 that are continuous with the side wall 17 in a direction orthogonal to the side wall 17 on which the hinge shaft 15 is formed. Thereby, compared with the case where the hard case using the thin hinge piece (equivalent to the side wall 17 of the present invention) as shown in FIG. 15 can be prevented from falling off the hinge bearing hole 37.

  The case body 3 includes side walls 39 and 41 formed continuously to the side wall 35 in a direction orthogonal to the side wall 35 in which the hinge bearing hole 37 is formed. The side walls 39 and 41 function as reinforcing surfaces with respect to the side wall 35, and can reduce the bending of the side wall 35 to prevent the hinge shaft 15 from falling off the hinge bearing hole 37. The surface 43 also functions as a reinforcing surface with respect to the side wall 35.

  In the space surrounded by the side walls 35, 35, 39, 41 and the face 43, for example, a reinforcing plate 49 is provided in parallel to the side walls 39, 41 and the face 43 in parallel to the side wall 35. 43 bending can be reduced.

  A recess 51 is provided at a position corresponding to the peripheral edge of the disk on the surface of the bottom plate 31 of the case body 3 facing the disk. Thereby, when removing a disk, it becomes easy to put a finger | toe on a disk in the position of the recessed part 51. FIG.

  The through hole 27 of the hinge shaft 15 is formed in a direction orthogonal to the plane (top plate 5) of the case lid 1. As a result, as described with reference to FIGS. 5 and 6, the hinge shaft 15 can be press-fitted into the hinge shaft hole 37 with the case lid 1 and the case main body 3 being opened 180 degrees. Further, since the hinge shaft 15 can be press-fitted into the hinge shaft hole 37 even when the case lid 1 and the case body 3 are overlapped, the existing case automatic assembly machine can be used as it is.

  In the above embodiment, the case lid 1 includes the hinge shaft 15 and the case main body includes the hinge bearing hole 37. However, the present invention is not limited to this, and the case lid includes the hinge bearing hole. The case body may be provided with a hinge shaft.

In the above embodiment, the minimum width dimension W4 <hinge shaft diameter φ1 <hinge bearing hole diameter for the width dimension W4 of the narrowest portion of the fitting opening 45, the diameter φ1 of the hinge shaft 15 and the diameter φ2 of the hinge bearing hole 37. However, the present invention is not limited to this, and the hinge shaft diameter φ1 and the hinge bearing hole diameter φ2 may be the same size.
Further, the width dimension W6 of the opening 47, the dimension W3 of the wide part of the flange part 29, and the dimension W7 of the narrow part are the dimension W7 of the narrow part of the collar part 29 <the opening width dimension W6 <the wide part of the collar part 29. However, the present invention is not limited to this, and the width W7 and the opening width W6 of the narrow portion of the flange 29 may be the same.

  In the above embodiment, the flange portion 29 is provided at the tip of the hinge shaft 15 and the surface 43 is provided in the hinge bearing hole arrangement portion 33 in order to form the opening 47, but the present invention is not limited to this. In addition, the flange 29 and the surface 43 are not provided.

  In the above embodiment, the fitting opening 45 is formed in a tapered shape, but the present invention is not limited to this, and for example, the fitting opening may be formed with a uniform width.

  In the said Example, although the two side walls 19 and 21 as a 1st reinforcement surface formed continuously from the side wall 17 in the direction orthogonal to the side wall 17 in which the hinge axis | shaft 15 is formed are provided, this invention is provided. It is not limited to this, The number of the 1st reinforcement surface may be how many, and the 1st reinforcement surface does not need to be provided.

  In the above embodiment, the case main body or the case lid in which the hinge bearing hole is formed is the second reinforcement formed continuously from the second side wall in the direction orthogonal to the second side wall in which the hinge bearing hole is formed. If the surface is provided, the deflection of the second side wall can be reduced and the hinge shaft can be prevented from falling off the hinge bearing hole.

  In the above embodiment, the two side walls 39 and 41 are provided as the second reinforcing surfaces continuously formed on the side wall 35 in the direction orthogonal to the side wall 35 in which the hinge bearing hole 37 is formed. However, the number of the second reinforcing surfaces may be any number, and the second reinforcing surfaces may not be provided.

  In the above embodiment, the recesses are provided at the four locations of the bottom plate 31 of the case body 3, but the present invention is not limited to this, and the number of recesses may be any number, and the recesses are provided. It does not have to be.

  In the above embodiment, the through hole 27 of the hinge shaft 15 is formed in a direction orthogonal to the top plate 5 of the case lid 1, but the present invention is not limited to this, and the hinge shaft 15 The direction in which the through hole is formed may be any direction.

In the above embodiment, the hinge shaft 15 is formed on the positioning base 25, but the present invention is not limited to this, and the positioning base 25 may not be provided.
Moreover, in the said Example, although the through-hole 27 of the hinge axis | shaft 15 is formed ranging over the positioning base 25 and the collar part 29, this invention is not limited to this, A through-hole is at least a hinge axis | shaft. It only has to be formed.

In the above embodiment, the case lid and the case body are injection-molded using polypropylene, and polypropylene is optimal in terms of appropriate material flexibility and cost required for disc case use as a teaching material. However, the present invention is not limited to this. A material different from polypropylene, for example, a soft resin such as polyethylene, or a resin that is a hard resin but a mixture of a polystyrene resin and a rubber resin such as butadiene, or an ABS resin, if a slight increase in cost is allowed. The case lid and the case main body may be formed of a soft, hard resin having improved impact properties.
Here, a soft resin is cited as a material for the case lid and the case body, but a hard resin such as polystyrene is not excluded as a material for the case lid and the case body of the present invention.
In the state where the case lid of the case body is closed, the thickness of the case, that is, the distance from the bottom surface outside the case body to the top surface outside the case lid is not particularly limited, but is about 6 mm in the embodiment. It is.

  The embodiments of the present invention have been described above. However, the present invention is not limited to these, and the dimensions, shapes, materials, arrangements, and the like are examples, and are within the scope of the present invention described in the claims. Various changes can be made.

It is a figure which shows the case cover body of one Example, (A) is a top view, (B) is sectional drawing in the AA position of (A), (C) is the BB position of (A). It is sectional drawing which expands and shows the cross section of. It is a figure which shows the case main body of the Example, (A) is a top view, (B) is a side view, (C) is sectional drawing which expands and shows the cross section of CC position of (A), (D ) Is an enlarged cross-sectional view of the cross section at the DD position in (A). It is a figure which expands and shows the hinge axis | shaft vicinity of the case cover body of this Example, and the hinge bearing hole vicinity of a case main body, (A) is a top view of the hinge axis | shaft vicinity of a case cover body, (B) is (A). Sectional drawing in the EE position of (C) is a top view of the hinge bearing hole vicinity of a case main body, (D) is sectional drawing in the FF position of (C). It is a figure which expands and shows the disk latching claw vicinity of the case main body of the Example, (A) is a top view, (B) is sectional drawing in the GG position of (A). It is sectional drawing which expands and shows the hinge axis | shaft vicinity of the case cover body of the same Example, and the hinge bearing hole vicinity of a case main body, (A) shows the state before fitting, (B) shows the state after fitting. . It is a top view which shows the state by which the case cover body and case main body of the Example were pivotally supported. FIG. 6 is an enlarged view showing the vicinity of the hinge shaft of the case lid and the vicinity of the hinge bearing hole of the case main body of the embodiment, and the case lid is attached to the case main body with the hinge shaft fitted into the hinge bearing hole It is sectional drawing which shows a perpendicular state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case cover body 3 Case main body 5 Top plate 7 Side wall 9 Label holding nail | claw 11 Through-hole 13 Hinge axis | shaft arrangement | positioning part 15 Hinge axis | shaft 17 Side wall (1st side wall)
19, 21 Side wall (first reinforcing surface)
23 Side wall 25 Positioning base 27 Through hole 29 Gutter part 31 Bottom plate 33 Hinge bearing hole arrangement part 35 Side wall (second side wall)
37 Hinge bearing holes 39, 41 Side wall (second reinforcing surface)
43 Surface 45 Insertion opening 47 Opening 49 Reinforcing plate 51 Recess 53 Disc locking portion 55 Projection 57 for supporting the disc 57 Disc locking claw 59 Center projection

Claims (8)

A hinge shaft provided on a first side wall constituting one of the case lid and the case main body, and a hinge bearing hole provided on a second side wall opposite to the first side wall and constituting the other to receive the hinge shaft In the disc case in which the case lid and the case body are combined so as to be openable and closable by coupling with,
The hinge shaft has a substantially cylindrical shape provided to protrude from the first side wall,
The hinge bearing hole is a substantially circular one provided on the second side wall, and is opened to the one end surface by a fitting opening made of a notch formed on one end surface side of the second side wall,
The disk case according to claim 1, wherein a width dimension of a narrowest portion of the fitting opening is smaller than a diameter of the hinge shaft, and the hinge shaft is formed in a size capable of being press-fitted into the hinge bearing hole. The hinge shaft has a through hole that crosses the substantially cylindrical central axis, and has a flange at the tip, and the flange has a wide penetration direction of the through hole of the hinge shaft and a narrow direction perpendicular to the penetration direction. It has a shape that
The case main body or the case lid in which the hinge bearing hole is formed includes a surface that is connected to the one end surface of the second side wall and that extends in a direction perpendicular to the second side wall and away from the first side wall, An opening connected to the fitting opening on the surface to receive the flange;
The disk case according to claim 1, wherein a width dimension of the opening is formed to be smaller than a dimension of the wide portion of the flange portion.   3. The disk case according to claim 1, wherein the fitting opening is formed such that a dimension on the one end face side of the second side wall is larger than a dimension on the hinge bearing hole side.   The case cover body or the case main body on which the hinge shaft is formed includes a first reinforcing surface formed continuously from the first side wall in a direction orthogonal to the first side wall. 3. Disc case according to 3.   The case main body or the case lid body in which the hinge bearing hole is formed includes a second reinforcing surface formed continuously from the second side wall in a direction orthogonal to the second side wall. Disc case according to any of the above.   The disk case according to any one of claims 1 to 5, wherein the surface of the case body on the disk housing side includes a recess at at least one position corresponding to the peripheral edge of the disk.   The disk according to any one of claims 1 to 6, wherein the through hole of the hinge shaft is formed in a direction orthogonal to a plane of the case lid or the case main body on which the hinge shaft is formed. Case.   The disk case according to any one of claims 1 to 7, wherein a material of the case lid and the case body is a polypropylene resin, a polyethylene resin, a resin obtained by mixing a rubber resin with a polystyrene resin, or an ABS resin.

Images