JP3189371B2 - Disk cartridge case and packaging structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for packaging a disk cartridge case for accommodating a disk cartridge accommodating a recording disk such as an optical disk or a magneto-optical disk.

[0002]

2. Description of the Related Art Conventionally, a sleeve case is used as a case for storing a disk cartridge containing a recording disk or a tape cassette containing a tape reel around which a recording tape is wound.

The sleeve case is made of polypropylene (P
P) or a sheet material made of a synthetic resin such as polyethylene terephthalate (PET) is formed in a cylindrical shape, and an opening for inserting and removing a cartridge or the like is provided at one end. The disk cartridge and the like are inserted into and removed from the sleeve case through the opening.

As another example of a disk cartridge case, a combination of a pair of principal surface members having substantially the same shape has been proposed. In this case, both side portions of the main surface member are connected via side surface members. In this case, the main surface member can be formed of a material having high rigidity, so that the disk cartridge to be housed can be reliably protected, and easy deformation is prevented, so that the disk cartridge can be easily inserted and removed. Can be done.

[0005]

Incidentally, the above-mentioned disk cartridge case may be stored in a storage rack capable of storing a plurality of disk cartridge cases. As shown in FIG. 17, some of the disk cartridge cases stored in the storage rack have side grooves 407 and 408 formed on the side surface so as to be supported at predetermined storage positions. These side grooves 407 and 408 are formed at the center of the side surfaces in parallel with the upper and lower main surfaces. That is, the disk cartridge case 406 is positioned at a predetermined storage position by inserting the support pieces provided on the storage rack into the side grooves 407 and 408.

Further, the case for the disk cartridge is
When a pair of upper and lower members are butt-coupled to each other, a seam of each member appears on a side surface serving as a butt portion of these members. High dimensional accuracy is required to form each member so that such seams do not occur. So, to prevent seams from appearing on the surface,
In some cases, the vicinity of the abutting portion is formed as a concave stripe, and the edges of the surface face each other at a slight interval, and are located on the bottom surface of a groove formed between these edges.

The disk cartridge case 406 is
When the disk cartridge is stored and sold, it is packaged with an overlap film 201 which is a film member made of synthetic resin. This packaging is a so-called caramel wrap, in which an overlap film is wrapped around a disk cartridge case, the overlapped edges are joined to form a cylinder, and then, as shown in FIG. The both ends of the formed overlap film are bent inwardly to form an overlapping portion 20.
2 and 203 are formed, and the overlapping portions 202 and 203 are joined by heat fusion. This heat fusion is performed by bringing a heating iron made of a heated metal plate or the like into contact with the overlapping portions 202 and 203. After that, the overlap film 201 contracts by being heated and is brought into close contact with the outer peripheral surface of the disk cartridge case 406.

By the way, the overlap film 201
When the overlapping portions 202 and 203 are located on the side groove portions 407 and 408, there is no support portion, so that a portion that is not sufficiently pressed by the heating iron may be generated, and a portion that is not fused may be generated.

The overlapping portion 2 of the overlap film 201
When the overlap margin of 02 and 203 is larger than the width of the side grooves 407 and 408, a heat iron is brought into contact with a portion protruding from the side grooves 407 and 408 to perform heat fusion in a wide area. Can be. By the way, as shown in FIGS. 18 and 19, when the overlap film 201 is shifted to one end side or the other end side, the overlap margin of the overlapping portions 202 and 203 is indicated by an arrow R in FIGS. When the width of each of the side grooves 407 and 408 is smaller than the width of the side grooves 407 and 408, the side grooves 407 and 408 are located at the center of the side surface. Since it is located on 407 and 408, any of the overlapping portions 202 and 203 may not be fused at all.

Therefore, the present invention has been proposed in view of the above-mentioned circumstances, and when performing so-called caramel wrap using an overlap film, the position of the overlap film is shifted during a heat fusion process. It is an object of the present invention to provide a packaging structure for a disk cartridge case that can be reliably packaged even if it is used.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and achieve the above-mentioned object, the present invention relates to a packaging structure for a case for accommodating a disk cartridge. A case body having a pair of substantially identical main surface members which are oriented at least on both side portions via side members, and a main body of the main surface member formed by the connection on an outer surface portion of the side member. A side groove portion parallel to the surface portion, a position deviated to one of the main surface portions with respect to a center position in the thickness direction of the side surface member, and a predetermined distance from the main surface portion of the main surface member. The side groove is formed at a separated position. The packaging structure for packaging the case is a caramel wrap structure of the case with an overlap film, and both ends of the cylindrical overlap film are bent to form an overlap portion, and the overlap portion is It is located at the center of the side member of the case and is heat-sealed.

[0012]

The side groove provided on the side member constituting the case body of the case packaged by the packaging structure of the present invention is
Since it is formed at a position deviated to one of the main surface portions with respect to the center position of the side member, when performing packaging by caramel wrap using the overlap film, the overlap film of the heat-sealed overlap film is formed. The position is deviated from the center of the overlapping portion.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

A disk cartridge case packed by the packing structure according to the present invention will be described. As shown in FIG. 1, this case is a disk in which a recording disk 117 such as an optical disk or a magneto-optical disk is housed in a cartridge body 102. This is for storing the cartridge 101.

As shown in FIG. 1, the disk cartridge 101 housed in the case is composed of upper and lower halves 103,
A cartridge body 102 formed by joining buttresses 104 into a thin housing;
And a recording disk 117 rotatably housed therein.

The recording disk 117 has a signal recording layer formed on the main surface of a disk substrate made of a synthetic resin material.
The recording disk 117 has a chucking hole formed in the center and a chucking reference surface provided on one surface side so as to surround the chucking hole. On the other surface side of the recording disk, a chucking plate 115 made of a metal material is attached so as to cover the chucking hole.

A pair of substantially rectangular recording / reproducing apertures is formed in the upper and lower main surfaces of a rectangular cartridge body 102 having a length of one side substantially corresponding to the diameter of the recording disk 117. The portions 106 are formed at opposing positions.

Each recording / reproducing opening 106 for exposing a part of the recording disk 117 accommodated in the cartridge main body 102 to the outside is opened and closed by a shutter member 105 slidably attached to the cartridge main body 102.
The shutter member 105 is formed by bending a thin metal plate or the like so as to form a U-shaped cross section, is fitted to the cartridge body 102 so as to cover each recording and reproducing opening 106, and has a base end side of the cartridge body 102. It is slidably supported on the side. When the disk cartridge 101 is inserted into the recording / reproducing apparatus with the direction indicated by arrow A in FIG. 1 as the insertion direction, the shutter member 105 moves in the direction indicated by arrow B in FIG. 1 to open the recording / reproducing opening 106.

The cartridge main body 102 has a circular chucking opening at the center of the lower main surface. The chucking opening faces a chucking hole, a chucking reference plane, and a chucking plate 115 provided on the recording disk 117 to the outside.

The lower main surface of the cartridge body 102 is provided with a pair of clamping recesses 110 and a disc type identification recess. These clamping recesses 110 are respectively provided on both sides in front of the lower main surface of the cartridge body 102. These clamping recesses 110 are open on one side and the other side of the cartridge body 102. The disc type identification recess is
It is provided on the front side of the lower main surface of the cartridge body 102. The disc type identification recess is open to the front end face of the cartridge body 102.

As shown in FIGS. 1 to 6, the disk cartridge case for accommodating the disk cartridge 101 constructed as described above is combined with a top plate constituting one main surface member constituting the case main body. Member 1
And a bottom plate member 2 constituting the other main surface member.

The top plate member 1 is formed in a flat plate shape by molding a synthetic resin, and includes a top plate portion 1a having a shape and size substantially corresponding to the shape and size of the main surface portion of the cartridge body 102. As shown in FIGS. 6 and 7, the top plate member 1 has a pair of inner wall portions 11 and 12 that constitute a side member on both sides of a lower surface portion. These inner wall portions 11, 12
Are formed parallel to the side edges of the top plate 1a. Also,
The top plate member 1 has an inner rear wall 15 parallel to the rear edge of the top plate 1a on the rear side of the lower surface. The inner wall portions 11 and 12 and the inner rear wall portion 15 are formed integrally with the top plate portion 1a, and are connected to each other to form a U-shaped peripheral wall excluding the front side. Each of the inner wall portions 11 and 12 and the inner rear wall portion 15 have a height substantially equal to the thickness of the cartridge body 102. In addition, each inner wall portion 11,
The inner rear wall portion 12 and the inner rear wall portion 15 are formed so as to be located on the inner side by a degree corresponding to the thickness of each of the wall portions 11, 12, and 15 from the both side edges and the rear edge of the top plate portion 1a.

On the outer side surfaces of the inner wall portions 11 and 12, side engaging ridges 14 are provided to project outward. These side engaging ridges 14 are provided on each of the inner wall portions 11,
12 are protruded in parallel with both side edges of the top plate 1a from the vicinity of the front end to the rear end. These side engaging ridges 14
Are formed slightly above the lower end portions of the inner wall portions 11 and 12, that is, on the side approaching the top plate portion 1a. Further, on the outside of the inner rear wall portion 15, that is, on the side surface on the rear side, a rear engaging ridge 16 is provided so as to project toward the rear side. The rear engagement ridge 16 is provided so as to extend from one side of the inner rear wall 15 to the other side in parallel with the rear edge of the top plate 1a. The rear engaging ridge 16 is provided on the inner rear wall 1.
5 is located slightly above the lower end, that is, on the side approaching the top plate 1a.

On the outer side surfaces of the inner wall portions 11 and 12, locking projections 24 are respectively provided so as to project outward. These locking projections 24 are provided on the front side of each of the inner wall portions 11 and 12 and at positions adjacent to the upper surface side of each of the side engaging projections 14. These locking projections 24 are formed with a projecting amount slightly smaller than the respective side engaging projections 14, the front end surface is substantially perpendicular to the inner wall portions 11, 12, and the rear end surface is the inner wall surface. Part 11,1
2 and is formed in a shape in which the amount of protrusion gradually decreases toward the rear side.

A pair of vertical grooves 39, 40 are provided at positions rearward of the outer side surfaces of the inner side walls 11, 12. These vertical grooves 39, 40 are formed in the respective inner wall portions 11, 1
2 from the base end side to the lower end side, that is, the top plate portion 1a
Is formed from the lower surface of the inner wall portions 11 and 12 to the vicinity of the lower end portions.

Although not shown, a pair of side steps and rear steps, which are step-like bulging parts, are formed on the lower surface of the top plate 1a at both sides and at the rear side. These step portions are formed with a slight bulging amount, and when the disc cartridge 101 is inserted into the disc cartridge case, the disc cartridge 101 slides on the center of the top plate 1a. This is to prevent it. An upper cutout 5 is formed at the front end of the top plate 1a. The upper cutout 5 is provided to expose the rear end portion of the disk cartridge 101 housed in the disk cartridge case to the outside.

On the other hand, the bottom plate member 2 is also formed in a flat plate shape by molding a synthetic resin. As shown in FIGS. 6 and 8, a pair of outer wall portions 17 and 1
Eight. These outer wall portions 17 and 18 are formed along side edges of the bottom plate portion 2a. This bottom plate member 2
Has an outer rear wall 19 parallel to the rear edge of the bottom plate 2a on the rear side of the upper surface. Each of these outer walls 17,
The outer wall portion 18 and the outer rear wall portion 19 are formed integrally with the bottom plate portion 2a, and are connected to each other to form a U-shaped peripheral wall excluding the front side. The outer wall portions 17 and 18 and the outer rear wall portion 19 are formed at a height substantially equal to the thickness of the cartridge body 102. The outer rear wall portion 19 is formed along the rear edge of the bottom plate portion 2a.

Side engaging grooves 20 and 21 are formed on the inner side surfaces of the outer wall portions 17 and 18 facing each other. These side engagement grooves 20 and 21 are formed in the respective outer wall portions 17 and
18 is formed parallel to the upper surface of the bottom plate 2a from the vicinity of the front end to the rear end. These side engagement grooves 20, 2
1 is slightly above the base end of each of the outer wall portions 17 and 18;
That is, it is formed at a position slightly separated from the bottom plate portion 2a. A flange 22 forming a rear engagement groove is provided on the inside of the outer rear wall portion 19, that is, on the side surface on the front side, so as to project toward the front side. The flange portion 22 is provided on the outer rear wall portion 19.
Along the upper edge of the outer rear wall portion 19 from the one side to the other side, a protrusion is provided in parallel with the upper surface of the bottom plate portion 2a. The lower side of the flange 22 and the bottom plate 2a constitute a rear engagement groove.

A locking recess 25 is formed on the inner side surface of each of the outer wall portions 17 and 18. These locking recesses 25 correspond to the locking projections 23 and 24, respectively.
Each side engaging groove 2 is provided at a position on the front side of each outer wall portion 17, 18.
It is provided in communication above 0,21. These locking concave portions 25 are formed to be slightly shallower than the respective side engaging grooves 20 and 21.

A concave portion 38 is formed on the upper edge side of the outer side surface of each of the outer wall portions 17 and 18. These recesses 3
Numeral 8 is formed in steps from the front end to the rear end of each of the outer wall portions 17, 18 along the upper edge of each of the outer wall portions 17, 18. The upper side of these recesses 38 is open to the upper end side of each of the outer wall portions 17 and 18.

A pair of notches 41, 42 are provided on the rear side of the outer wall portions 17, 18 in correspondence with the vertical grooves 39, 40. These notches 41,
Reference numeral 42 is formed from the upper end of each of the outer wall portions 17 and 18 toward the base end.

A lower cutout 6 is formed at the front end of the bottom plate 2a. Lower cutout 6
Is for exposing the rear end portion of the disk cartridge 101 housed in the disk cartridge case to the outside.

On the bottom plate portion 2a, a pair of side step portions 30, 31 which are stepped bulging portions are provided on both sides and a rear side position.
And a rear step portion 32 is formed. These steps 3
Numerals 0, 31, and 32 are formed so as to have a slight swelling amount. When the disk cartridge 101 is inserted into the disk cartridge case, the disk cartridge 101 slides on the center of the bottom plate 2a. It is for preventing.

On the rear step 32, an erroneous insertion preventing projection 29 is provided in a protruding manner. This erroneous insertion prevention projection 29
Is formed at a position slightly deviated to one side from the center position of the rear portion of the bottom plate portion 2a, and is provided at a position corresponding to the disc identification recess of the disc cartridge 101.

A pair of rib-like reinforcing portions 27 and 28 are provided at both ends of the flange portion 22 so as to be connected to the flange portion 22. These reinforcing portions 27 and 28 are connected to the outer rear wall portion 19.
Are formed integrally on the inner surface of the base member 2 and are provided from the flange portion 22 to the bottom plate portion 2a. The lower side of each of the side engagement grooves 20 and 21 has
A plurality of reinforcing ribs 43 are provided from the side surfaces inside 0 and 21 to the bottom plate portion 2a.

The top plate member 1 and the bottom plate member 2 have the respective side engaging projections 14 engaged with the respective side engaging grooves 20 and 21,
The rear engagement ridge 16 is coupled to each other by engaging the rear engagement groove between the flange portion 22 and the bottom plate portion 2a, that is, the rear engagement groove, thereby forming a case body. The connection between the top plate member 1 and the bottom plate member 2 is such that the top plate member 1 is positioned in front of the bottom plate member 2 and the rear end of each side engaging ridge 14 is connected to each side engaging groove 2.
0, 21 and then the top plate member 1 is moved to the rear side, and each side engaging ridge 14 is inserted into each side engaging groove 2.
It is performed by sliding inside 0,21. When the top plate member 1 slides the top plate portion 1a to a position opposed to the bottom plate portion 2a, the rear engagement ridge 16 is engaged with the rear engagement groove, and the locking projections 23 and 24 are locked. Recesses 25, 2
6 is engaged. Each of the locking projections 23 and 24 is formed by
5 and 26, these locking projections 23 and 2
4 first enters between the outer wall portions 17 and 18 from the front end side of the outer wall portions 17 and 18 and these outer wall portions 17 and 18
Is pressed outward to slightly displace it flexibly. Then, when the outer walls 17 and 18 return to the initial state when they reach the positions facing the locking recesses 25 and 26, respectively, The recesses 25 and 26 are engaged.

The top plate member 1 and the bottom plate member 2 are connected to each other on both sides and the rear end portion of the top plate portion 1a and the bottom plate portion 2a so as to be parallel to each other, and have a narrow insertion / removal front side. Is formed. The opening for insertion and removal has a length substantially corresponding to the length of one side of the cartridge body 102 and is formed with a thickness substantially corresponding to the thickness of the cartridge body 102. At this time, each inner wall portion 11,
The lower ends of the inner wall 12 and the inner rear wall 15 are in contact with the upper surface of the bottom plate 2a. The upper ends of the outer wall portions 17, 18 and the outer rear wall portion 19 are in contact with the periphery of the lower surface of the top plate 1a.

Side grooves 7, 8 are formed by concave portions 37, 38 formed on the upper end side of the outer side surfaces of the outer side walls 17, 18 and the vicinity of both side edges of the top plate 1a. That is, the upper end edges of the outer wall portions 17 and 18 abut against the side edge portion of the top plate portion 1a at a position on the inner side by a distance corresponding to the depth of each side groove portion 7 and 8. I have. These side grooves 7, 8 are formed from the front end to the rear end of the side surface of the disk cartridge case. When the side groove portions 7 and 8 are stored in a storage rack for storing a plurality of disk cartridge cases, the support pieces provided on the storage rack are engaged to support the disk cartridge case at a predetermined position.

Each of the side grooves 7 and 8 is formed at a distance from the top plate 1a corresponding to the thickness of the top plate 1a. These side grooves 7 and 8 are provided with a thickness of the bottom plate 2a and outer wall portions 17 and 18 with respect to the bottom plate 2a.
Are formed at a distance corresponding to the sum of the portions below the concave portions 37 and 38 of the first embodiment. In other words, each of the side grooves 7, 8 is biased toward the top plate 1a, which is the upper main surface, with respect to the center position of the side wall member constituted by the side walls 17, 18, 11, 12. Formed at the location.

The notches 41 and 42 provided in the outer walls 17 and 18 and the inner walls 11 and 12 are formed on the rear side of the bottoms of the side grooves 7 and 8. The bottomed holes formed by the vertical groove portions 39 and 40 are located respectively.

The inner side of the case body, that is,
A pair of locking members 9 and 10 serving as locking members for locking the disk cartridge 101 inserted between the members 1 and 2 are provided between the members 1 and 2. The lock members 9 and 10 are formed in an arch shape from a material having flexibility and elasticity. The lock members 9 and 10 are attached to a pair of lock member attachment portions 33 and 34 formed on the bottom plate member 2, respectively. These locking members 9 and 10 have an arch-shaped central portion at the bottom plate portion 2a.
Are supported so as to bulge inward. These lock members 9 and 10 can be elastically displaced in a direction approaching the outer wall portions 17 and 18.

The inner wall portions 11 and 12 of the top plate member 1
The rear part is notched, and the rear part has a shorter hanging distance from the top plate part 1a than the central part and the front part by a length corresponding to the width of each lock member 9, 10. . That is, the inner wall portions 11 and 12 are configured so as not to abut against the lock members 9 and 10 held by the lock member holding portions 33 and 34, and the lock member holding portions of the lock members 9 and 10. It prevents falling off from above 33 and 34.

When the bottom plate member 2 is integrally formed by injection molding on the back side of each lock member attaching portion 33, 34, that is, on the rear side position outside each of the outer wall portions 17, 18, So-called sink marks are likely to occur. In the sink, since the portion provided with the lock member attaching portions 33 and 34 is thicker than the other portions of the outer wall portions 17 and 18, the portions are inwardly formed in the cooling step during molding. Depressed to the side. In order to prevent the occurrence of such sink marks, the lock member mounting portions 3 of the outer wall portions 17 and 18 may be used.
The positions corresponding to 3 and 34 are provided with a meat escape hole 36 and are hollow.

In order to store the disk cartridge 101 in the disk cartridge case configured as described above, the disk cartridge 101 is inserted between the top plate portion 1a and the bottom plate portion 2a through an insertion opening. Insert in the direction of the middle arrow A. The disk cartridge 10 is attached to the disk cartridge case.
1 is inserted, the disc cartridge 101
Since the upper and lower sides are slidably contacted with the side step portions 30, 31, it is possible to prevent slidable contact with the central portions of the top plate portion 1a and the bottom plate portion 2a.

When the front portion of the disk cartridge 101 reaches the rear side of the disk cartridge case, both side portions of the front portion of the cartridge body 102 press the lock members 9 and 10 to release the lock members 9 and 10. The outer wall portions 17 and 18 are displaced in a direction to approach them. When the front end portion of the cartridge body 102 is inserted to a position where the front end portion substantially abuts the inner wall portion 15 of the disk cartridge case, the lock members 9 and 10 are opposed to the clamping recesses 110 and 109, respectively. Let me do. At this time, the arch-shaped portions at the central portions of the lock members 9 and 10 return to the initial state by the elastic force and engage with the respective clamping recesses 110. Thus, each lock member 9, 1
0 engages with each clamping recess 110,
The cartridge main body 102 is locked so as to be sandwiched from both sides, and movement in a direction in which the cartridge main body 102 is pulled out by an impact or vibration is restricted. At this time, the erroneous insertion prevention protrusion 2
Reference numeral 9 is engaged in the disc type identification recess of the disc cartridge 101.

The disk cartridge 101 thus housed in the disk cartridge case is protected by the top plate member 1 and the bottom plate member 2.

The disk cartridge case accommodating the disk cartridge 101 as described above is packaged with an overlap film 201 as shown in FIGS.

In carrying out this packaging, first, FIG.
As shown in FIG. 5, a label member 204 made of paper or the like is covered from the front side of the disk cartridge case 51 so as to cover the upper cutout 5 and the lower cutout 6. The label member 203 is bent in a U-shape from the center portion, and is put on the disk cartridge case 51 so as to cover the top plate portion 1a and the bottom plate portion 2a of the disk cartridge case 51. That is, in the label member 203, two bent portions parallel to each other are formed substantially at the center with a distance corresponding to the thickness of the disk cartridge case 51.

The disk cartridge case 51 is packaged in a caramel wrap packaging structure. In order to perform packaging using this packaging structure, first, the disk disk cartridge case 51 is inserted into a cylindrical overlap film 201 in which opposing edges are joined to each other. Next, as shown in FIG. 12, the vicinity of both ends of the cylindrical overlap film is bent inward to form overlapping portions 202 and 203, respectively, and the overlapping portions 202 and 203 are formed by a pair of heating iron members 301 and 302. Parts 202, 20
3 is heated and joined by heat fusion. These overlapping parts 20
Reference numerals 2 and 203 are formed on the outer surface of the side member of the disk cartridge case 51.

The pair of heating iron members 301 and 302 disposed opposite to each other are formed of metal or the like, and have recesses 303 and 304 formed on the opposite surfaces. These recesses 303 and 304 are formed in a shape corresponding to the shape of the side surface of the disk cartridge case 51, and both side portions of the disk cartridge case 51 are inserted. Both sides of the disk cartridge case 51
Since the ridges are chamfered to form a substantially cylindrical surface, both corners of each of the recesses 303 and 304 are also formed to a substantially cylindrical surface.

Since each of the recesses 303 and 304 is formed in a shape in which both side portions of the disk cartridge case 51 are fitted, the overlap film 201 is formed.
Is displaced on either one end or the other end, and FIG.
As shown in FIG. 3 and FIG.
Also, when the end of 01 protrudes from the side surface of the disk cartridge case 51 and reaches the top plate 1a or the bottom plate 2a, the protruding portion is heated by the heating iron members 301 and 302, Heat fused.

Then, the overlapping film 201 is contracted by heating, and is brought into close contact with the outer peripheral surface of the disk cartridge case 51, whereby the overlapping film 201 shown in FIG.
As shown in the figure, the packaging is completed.

By the way, the overlap film 201
The overlapping portions 202 and 203 are formed so as to cover the side grooves 7 and 8 as shown in FIG. These overlapping parts 2
The portions located on the side grooves 7, 8 of 02, 203 are not sufficiently pressed by the heating iron members 301, 302, and therefore may not be fused.

This disk cartridge case 51
As shown in FIGS. 10 and 11, the overlapping film 201 is displaced to one end side or the other end side so that the overlapping portions 202 and 203 indicated by an arrow R in FIGS. 10 and 11 overlap. Even if one of the margins becomes narrower than the width of each of the side grooves 7, 8, these side grooves 7, 8
Are displaced closer to the top plate 1a side than the center position of the side surface member, and therefore these overlapping portions 202 and 203 are not located on the respective side grooves 7 and 8. Therefore, the respective overlapping portions 202 and 203 of the overlap film 201 located on the side of the disk cartridge case 51 are reliably fused.

In order to take out the disk cartridge 101 housed in the disk cartridge case, the rear part of the cartridge main body 102 facing the outside through the upper and lower cutouts 5 and 6 is finger-fed. The lock members 9 and 10 are pressed by both sides of the front portion of the cartridge main body 102 in a direction approaching the outer wall portions 17 and 18 when the grip members are gripped by the like and pulled backward with respect to the disk cartridge case. The cartridge body 102 is displaced to release the engagement with the cartridge body 102. At this time, the disk cartridge 101 is taken out of the disk cartridge case through the opening for insertion and removal.

[0056]

As described above, according to the present invention, the side groove provided in the side member constituting the case body of the disk cartridge case packaged by the caramel wrap using the overlap film is formed at the center of the side member. Since it is formed at a position deviated from the position, when packaging by caramel wrap using an overlap film, it becomes a position deviated with respect to the center of the overlap portion of the overlap film to be heat-sealed, Even if the overlap film is displaced during the heat-sealing step and the overlap margin of the overlapping portion is reduced, the packaging can be surely performed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a disk cartridge case according to the present invention and a disk cartridge housed in the disk cartridge case.

FIG. 2 is a plan view showing the disk cartridge case.

FIG. 3 is a rear view showing the disk cartridge case.

FIG. 4 is a bottom view showing the disk cartridge case.

FIG. 5 is a front view showing the disk cartridge case.

FIG. 6 is an exploded perspective view showing the disk cartridge case.

FIG. 7 is a side view showing the top plate member.

FIG. 8 is a side view showing a bottom plate member constituting the disk cartridge case.

FIG. 9 is a longitudinal sectional view showing a state in which the disk cartridge case is packaged with an overlap film.

FIG. 10 is a longitudinal sectional view showing a state in which the overlap film wrapping the disk cartridge case is shifted to one side.

FIG. 11 is a longitudinal sectional view showing a state in which the overlap film wrapping the disk cartridge case is shifted to the other side.

FIG. 12 is a longitudinal sectional view showing a state where the disk cartridge case is wrapped with an overlap film.

FIG. 13 is a longitudinal sectional view showing a state where the overlap film is shifted to one side when the disk cartridge case is wrapped with the overlap film.

FIG. 14 is a longitudinal sectional view showing a state where the overlap film is shifted to the other side when the disk cartridge case is wrapped with the overlap film.

FIG. 15 is a perspective view showing a state in which a label member is put on the disk cartridge case when the disk cartridge case is wrapped with an overlap film.

FIG. 16 is a perspective view showing a state where the disk cartridge case is packaged with an overlap film.

FIG. 17 is a longitudinal sectional view showing a state where a conventional disk cartridge case is packaged with an overlap film.

FIG. 18 is a longitudinal sectional view showing a state in which the conventional disk cartridge case is wrapped with an overlap film and the overlap film is shifted to one side.

FIG. 19 is a longitudinal sectional view showing a state in which the above-mentioned conventional disk cartridge case is wrapped with an overlap film and the overlap film is shifted to the other side.

[Explanation of symbols]

1a top plate, 2 bottom plate, 7, 8 side groove,
11, 12 inner wall part, 17, 18 outer wall part, 5
1 disk cartridge case, 101 disk cartridge, 201 overlap film,
202, 203 overlapping part

Continuation of the front page (56) References Japanese Utility Model Sho 62-31094 (JP, U) Japanese Utility Model Sho 61-129790 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65D 85 / 57 G11B 23/02 G11B 23/023

Claims (1)

(57) [Claims] 1. A packaging structure of a case for accommodating a disk cartridge, wherein the case has a pair of substantially identical main surface members which are opposed to each other and have at least both side parts connected via side members. A case body and an outer side surface of the side member are formed by the connection.
That a the main surface main surface portion parallel to the side groove of the member, a position which is biased to either the principal surface side with respect to the thickness direction of the center of the side member, the main surface member The side groove portion is formed at a position separated by a predetermined distance from the main surface portion, and the packaging structure is a caramel wrap structure of the case by an overlap film, and both ends of the overlap film formed into a cylindrical shape. A part is bent to form an overlapping part, and the overlapping part is located at a center position of the side member of the case and is heat-sealed, so that a packaging structure for a disk cartridge case is provided.