Storage case for disc-shaped recording media

Abstract: A storage case (110) for disc-shaped recording media contained within respective substantially flat rectangular housings is constituted by a one-piece moulded plastics member including a middle spine (111) having opposed side edges joined by flexible hinges to respective rectangular covers (112,113) which are swingable between closed positions, in which the covers (112,113) extend substantially parallel to each other from the spine (111) with their inner surfaces in confronting relation, and opened positions in which the covers (112,113) are spread angularly apart, elements (117 a ,117 b -,118 a ,118 b ) on the covers (112,113) to hold respective disc-shaped recording media in their rectangular housings against inner surfaces (112 b ,113 b ) of the respective covers, and a holder (114) on the spine (111) extending from the spine (111) between the covers (112,113) in the closed positions of the covers to embrace and hold at least one additional disc-shaped recording medium at an edge portion of its respective rectangular housing so as to accommodate such at least one additional disc-shaped recording medium in its respective housing between the disc-shaped recording media in their respective housings held against the inner surfaces of the covers.

Description: The invention relates to a storage case to contain disc-shaped recording media, such as floppy discs or the like contained within respective substantially flat rectangular housings or envelopes. For the purpose of storing a disc-shaped recording medium, such as a floppy disc or the like contained within a substantially flat rectangular housing or envelope, it has been proposed to employ a storage case 1 of the kind shown in Figure 17 of the accompanying drawings. The storage case 1 includes a substantially rectangular base 2 having a peripheral wall 2 a extending along three of its sides, and a rectangular lid 3 pivoted with respect to the base 2 and having a pocket or flat pouch 3 a into which a rectangular housing or envelope containing a floppy disc or the like can be inserted when the lid 3 is in its illustrated open position. Thereafter, the lid 3 can be pivoted to a closed position seating on the edge of the peripheral wall 2 a of the base. Such a storage case 1 is usually moulded of a material of relatively high rigidity, for example, having a flexural rigidity of about 35,000 kg/cm 2 , such as, polystyrene, acrylatestyrene or the like. In addition to the storage case 1 shown in Figure 17, and which is intended to contain only one disc-shaped recording medium in a respective rectangular housing or envelope, it has been proposed to provide a storage case 1' of the kind illustrated in Figure 18, and which is moulded of a relatively flexible material, such as, polypropylene or the like having a flexural rigidity of about 10,000 to 13,000 kg/cm 2 . Such relatively flexible material has improved sealing characteristics and an aesthetically pleasing appearance, and may be readily employed to form the storage case 1' so as to accommodate two floppy discs in their respective rectangular housings or envelopes. More particularly, as shown, the storage case 1' has a pair of rectangular lids or cover portions 2' and 3' pivotally connected to each other, at one edge, by a moulded hinge 4' of reduced thickness so that the lids 2' and 3' are swingable relative to each other between the illustrated opened positions, in which the lids 2' and 3' are spread angularly apart, and a closed position in which the lids are brought together with their inner surfaces in confronting relation. Each of the lids 2' and 3' has a peripheral rim formed thereon to define a shallow inner concavity to accommodate therein a rectangular housing or envelope 5 containing a respective floppy disc. The storage case 1' of Figure 18 is an improvement over the storage case 1 of Figure 17 in that it is capable of storing two floppy discs in their respective rectangular housings or envelopes. EP-A-0.186.359 which is considered to represent the closest prior art discloses a storage case that can accomodate two disc cartridges as described above. However, recently, the demand for disc-shaped recording media, such as floppy discs or the like, has increased due to the widespread employment of note-type personal computers and the like. Such increased demand for disc-shaped recording medium has led to a corresponding demand for storage cases in which the disc-shaped recording media can be safely and conveniently transported and stored. The note-type personal computers require the user to carry at least two floppy discs, one being for data recording while the other is reserved for backup recording. However, it is preferable to have available three or more floppy discs. Since, as noted above with reference to Figure 18, the existing storage cases have been designed to contain no more than two floppy discs, in those cases where it is desirable to have three or more floppy discs available, it is necessary to carry at least two storage cases which is inconvenient. US-A-4.844.260 discloses a storage case that can hold a plurality of discs cartriges using holding means attached to the spine portion of the storage case. According to the invention there is provided a storage case for disc-shaped recording media each contained within a respective substantially flat rectangular housing, the storage case comprising a one-piece moulded plastics member including a middle spine portion having opposed side edges from which flexible hinge portions extend, and a pair of rectangular cover portions having side edges joined to respective ones of the hinge portions so that the cover portions are swingable relative to each other about the hinge portions between closed positions, in which the cover portions extend substantially parallel to each other from the spine portion with inner surfaces of the said cover portions in confronting relation, and opened positions in which the cover portions are spread angularly apart, means on each of the cover portions to hold a rectangular housing for disc-shaped recording media against the inner surfaces of the respective cover portions, and holder means on the spine portion extending from the spine portion between the cover portions in the closed positions of the cover portions to embrace and hold at least one additional disc-shaped recording medium at an edge portion of a rectangular housing thereof so as to accommodate the at least one additional disc-shaped recording medium in its respective housing between the disc-shaped recording media in their respective housings held against the inner surfaces of the cover portions. Such a storage case can contain three or more disc-shaped recording media, such as, floppy discs, contained within respective substantially flat rectangular housings and can be readily and inexpensively moulded so as to be constituted by a one piece moulded plastics member. The holder means on the spine portion of the storage case can include flanges extending substantially parallel to the opposed side edges of the spine portion and spaced apart from each other frictionally to retain therebetween the edge portion of the housing of the at least one additional disc-shaped recording medium. There may be two of such flanges spaced apart to accommodate therebetween only one additional disc-shaped recording medium in its respective housing, or the two flanges may be spaced apart by substantially a multiple of the thickness of the rectangular housing for each disc-shaped recording medium so that a corresponding plurality of the additional disc-shaped recording media in their housings can be accommodated in the holder means. If desired three or more of the parallel flanges may extend from the spine portion of the storage case, with each of the flanges being spaced from each of the other flanges adjacent thereto by a distance approximately equal to the thickness of the rectangular housing of a disc-shaped recording medium so that a single disc-shaped recording medium in its housing can be accommodated between each two adjacent flanges. The flanges may taper in the direction away from the spine portion so as to define confronting flange surfaces that diverge toward free edges remote from the spine portion to facilitate entry of an edge portion of the housing of a disc-shaped recording medium between the confronting flange surfaces. Furthermore, spaced apart ribs desirably extend from the confronting flange surfaces substantially at right angles to the free edges thereof to define limited zones at which the flanges frictionally grip the housing of a disc-shaped recording medium therebetween. It is also desirable to arrange the ribs extending from each of the confronting flange surfaces in offset relation to the ribs on the other of the flange surfaces. The invention is diagrammatically illustrated by way of example in the accompanying drawings in which:- Figure 1 is a schematic perspective view of a first embodiment of a storage case according to the invention, shown in its opened condition; Figure 2 is an enlarged schematic sectional view showing the storage case of Figure 1 in its closed condition, and with housings or envelopes of three floppy discs contained therein; Figure 3 is a fragmentary enlarged schematic perspective view showing a portion of a holder included in the storage case of Figure 1 and to which reference will be made in explaining its cooperation with the housing or envelope of a floppy disc to be held therein; Figure 4 is a fragmentary enlarged elevational view of the portion of the storage case shown in Figure 3; Figures 5 and 6 are schematic perspective views of two further embodiments of storage cases according to the invention, shown in their opened conditions; Figure 7 is a perspective view of a fourth embodiment of a storage case according to the invention, shown in its closed condition; Figure 8 is a plan view of the storage case of Figure 7 shown in its fully opened condition so as to make visible the interior configuration thereof; Figure 9 is a side elevational view of the storage case of Figure 8; Figure 10 is an enlarged sectional view taken on line X-X in Figure 7 and which shows the storage case in its closed condition with three housings containing floppy discs disposed within the storage case; Figure 11 is an enlarged fragmentary plan view showing a portion of the storage case of Figures 7 to 10 in its opened condition for illustrating details thereof; Figures 12, 13 and 14 are further enlarged fragmentary sectional views taken on lines XII-XII, XIII-XIII and XIV-XIV, respectively, in Figure 11; Figure 15 is a schematic perspective view of a fifth embodiment of a storage case according to the invention, shown in its opened condition; Figure 16 is an enlarged schematic sectional view showing the storage case of Figure 15 in its closed condition, and with housings or envelopes of a relatively large number of floppy discs contained therein; and Figures 17 and 18 show storage cases of previously proposed kind. Referring to the drawings and initially to Figures 1 and 2, a storage case 10 is intended to accommodate three disc-shaped recording media contained within respective substantially flat rectangular housings indicated at 5 a , 5 b and 5 c . The storage case 10 is desirably a one-piece moulded plastics member which includes a middle spine portion 11 having opposed side edges from which flexible hinge portions 11 a and 11 b extend (Figure 2), and a pair of rectangular cover portions 12 and 13 having respective side edges joined to the hinge portions 11 a and 11 b , respectively, so that the cover portions 12 and 13 are swingable relative to each other about the hinge portions between closed positions (Figure 2) and opened positioned (Figure 1). The rectangular cover portions 12 and 13 have peripheral walls or rims 12 a and 13 a , respectively, extending along the three sides thereof other than the sides joined to the hinge portions 11 a and 11 a . In their closed positions (Figure 2), the cover portions 12 and 13 extend substantially parallel to each other from the spine portion 11 and abut at the edges of the peripheral walls or rims 12 a and 13 a , with inner surfaces 12 b and 13 b of the cover portions 12 and 13 being in confronting relation. At the side portions of the peripheral walls 12 a and 13 a which extend at right angles to the hinge portions 11 a and 11 b , there may be provided internal pads or raised portions 12 c and 13 c (Figure 1) which are dimensioned frictionally to engage respective edges of the rectangular housings 5 a and 5 b containing disc-shaped recording media to hold the housings against the inner surfaces 12 b and 13 b , respectively of the cover portions 12 and 13. It will be apparent that, when the cover portions are spread angularly apart to their opened positions, as shown in Figure 1, the disc-shaped recording media contained within the respective substantially flat rectangular housings 5 a and 5 b can be readily installed within the shallow inner concavities of the cover portions 12 and 13 and there frictionally held against the inner surfaces 12 b and 13 b by the pads 12 c and 13 c . The storage case 10 is further shown to comprise a holder 14 situated on the spine portion 11 and extending from the spine portion between the cover portions 12 and 13 in the closed positions of the cover portions (Figure 2) to embrace and hold an additional disc-shaped recording medium at an edge portion of its respective rectangular housing 5 c so as to accommodate such additional disc-shaped recording medium in its respective housing 5 c between the disc-shaped recording media contained in the housings 5 a and 5 c held against the inner surfaces 12 b and 13 b of the cover portions 12 and 13. More specifically, the holder 14 on the spine portion 11 is shown to include flanges 14 a and 14 b extending substantially parallel to the opposed side edges of the spine portion and so spaced apart from each other as frictionally to retain therebetween an edge portion of the housing 5 c of the additional disc-shaped recording medium, as shown in Figure 2. In order frictionally to retain the edge portion of the housing or envelope 5 c between the flanges 14 a and 14 b , a distance T (Figure 4) between the inner surfaces of the flanges 14 a and 14 b may be made slightly smaller than the thickness of the housing or envelope 5 c . For example, in the case of a 76.2 mm diameter (3.5 inch) floppy disc which is contained in a housing or envelope having a thickness of 3.3 mm, the distance T between the flanges may be about 3.0 mm. Further, as shown in Figures 3 and 4, a substantially semi-circular projection 15 may extend from the web 14 c of the holder 14 between the flanges 14 a and 14 b at a location adjacent one end of the holder so as to be engageable in a similarly shaped recess 16 formed in an edge of the housing 5 c of the floppy disc or other disc-shaped recording medium. Such recess 16 is conventionally provided in the housing or envelope 5 c of a floppy disc or other disc-like recording medium to position the housing when inserted into a disc drive (not shown). The engagement of the projection 15 in the recess 16 ensures that the housing or envelope 5 c of the disc-like recording medium will have a predetermined orientation within the storage case 10. In the case where the storage case 10 is intended for the storage of 76.2 mm (3.5 inch) floppy discs each contained in a housing or envelope having a thickness of about 3.3 mm, distances T a and T b between the opposite sides of the projection 15 and the inner surfaces of the flanges 14 a and 14 b , respectively, are each about 1.0 mm. As shown particularly in Figure 2, the opposed side edges of the spine portion 11 from which the hinge portions 11 a and 11 b extend may be laterally spaced outwardly from the flanges 14 a and 14 b by distances each approximately equal to the thickness of each of the housings 5 a and 5 b containing a disc-shaped recording medium. Therefore, such housings 5 a and 5 b held against the inner surfaces of the respective cover portions 12 and 13 can, in the closed positions of the cover portions, extend between the flange 14 a and the cover portion 12 and between the flange 14 b and the cover portion 13, respectively, as shown in Figure 2. In the embodiment described with reference to Figures 1 to 4, the holder 14 on the spine portion 11 has only two flanges 14 a and 14 b spaced apart by a distance approximately equal to the thickness of the housing or envelope 5 c containing a disc-shaped recording medium so that the storage case 11 according to such embodiment can accommodate only a single disc-shaped recording medium in addition to the disc-shaped recording media contained in the housings 5 a and 5 b held against the inner surfaces 12 b and 13 b of the cover portions 12 and 13. However, as shown in Figures 5 and 6, storage cases 10' and 10'' in accordance with further embodiments may be arranged to hold more than the three disc-shaped recording media that can be accommodated within their respective housings in the storage case 10 of Figures 1 and 2. More specifically, in the storage case 10' of Figure 5, the spine portion 11' has an increased width between its opposite side edges which are connected by hinge portions 11' a and 11' b to cover portions 12' and 13', respectively. In this case, the holder 14' extending from the spine portion 11' has three flanges 14 1 , 14 2 and 14 3 extending substantially parallel to the opposed side edges of the spine portion, with each of the flanges 14 1 , 14 2 and 14 3 being spaced from each of the other flanges adjacent thereto by a distance approximately equal to the thickness of the rectangular housing for each of the disc-shaped recording media. Thus, in addition to the rectangular housings of the disc-shaped recording media that can be stored against the inner surfaces of the cover portions 12' and 13', the storage case 10' can embrace and frictionally hold edge portions of the housings of two disc-shaped recording media between the flanges 14 1 and 14 2 and between the flanges 14 2 and 14 3 , respectively. Similarly, in the storage case 10'' of Figure 6, the width of the spine portion 11'' between the cover portions 12'' and 13'' is further increased so that the holder 14'' may be provided with six spaced apart flanges 14 1 , 14 2 , 14 3 , 14 4 , 14 5 and 14 6 extending parallel to the opposite side edges of the spine portion at which the hinge portions 11'' a and 11'' b connect the spine portion to the cover portions 12'' and 13", respectively. Once again, in the embodiment of Figure 6, each of the flanges 14 1 to 14 6 is spaced from each of the other flanges adjacent thereto by a distance approximately equal to the thickness of the rectangular housing for each of the disc-shaped recording media so that five recording media contained in their respective housings can be frictionally held, at edge portions, between the six flanges of the holder 14", while two other disc-shaped recording media in their respective rectangular housings are held against the inner surfaces of the cover portions 12'' and 13", respectively. In each of the storage cases 10' and 10'' having holders 14' and 14'' extending from the spine portions to hold a plurality of disc-shaped recording media in their respective housings in addition to the recording media held against the inner surfaces of the cover portions, each of the disc-shaped recording media to be held, at an edge portion of its rectangular housing, by the holder 14' and 14'' is embraced by two of the flanges of such holder. Therefore, each of the holders 14' and 14'' has a number of flanges that is one greater than the number of additional disc-shaped recording media that can be accommodated in the holder 14' or 14". In other words, the holder 14' to accommodate two additional disc-shaped recording media has three flanges, while the holder 14'' to accommodate five additional disc-shaped recording media has six flanges. The increased number of flanges provided on each of the holders 14' and 14'' has the disadvantage of increasing the width of the holder, and hence the width of the spine portion 11' or 11'' of the storage case. However, as shown in Figures 15 and 16, a storage case 110 to accommodate a relatively large number of disc-shaped recording media in their housings may have a holder 114 with only two flanges 114 a and 114 b extending from its spine portion 111 so as to extend between the cover portions 112 and 113 when the cover portions are swung relative to each other about hinge portions 111 a and 111 b from the angularly spread apart positions of Figure 15 to the closed positions of Figure 16. The two flanges 114 a and 114 b extend parallel to the hinge portions 111 a and 111 b at the opposite side edges of the spine portion 111, and are spaced from each other by a distance T 1 that is substantially a multiple of the thickness of the rectangular housing for each of the disc-shaped recording media. For example, in the illustrated embodiment, the distance T 1 between the flanges 114 a and 114 b of the holder 114 is substantially seven times the thickness of each rectangular housing for a disc-shaped recording medium. In such case, and as shown particularly in Figure 16, seven housings 5 c , 5 d , 5 e , 5 f , 5 g , 5 h and 5 i containing respective disc-shaped recording media can be stacked between the flanges 114 a and 114 b of the holder 114 can frictionally held by the holder 114. Furthermore, in the storage case 110, the means in the cover portions 112 and 113 to hold the housings 5 a and 5 b containing respective disc-shaped recording media against the inner surfaces 112 b and 113 b of the cover portions 112 and 113, respectively, are constituted by integral pairs of spaced apart lugs 117 a and 118 a , and 117 b and 118 b , extending from the inner surfaces of the cover portions 112 and 113, respectively, with the distance between the paired lugs 117 a and 118 a , and between the paired lugs 117 b and 118 b being approximately equal to one of the orthogonal dimensions, for example, the dimension d 1 (Figure 1), of the rectangular housing of a disc-shaped recording medium to be held thereby. Therefore, the disc-shaped recording media in the rectangular housings 5 a and 5 d are held against the inner surfaces of the respective cover portions 112 and 113 by frictional engagement of the lugs 117 a and 118 a with the opposed edges of the housing 5 a , and by frictional engagement of the lugs 117 b and 118 b with the opposite edges of the housing 5 b , as shown in Figure 16. Further, as shown in Figure 16, the lugs of the pairs of lugs 117 a and 117 b and the lugs of the pairs of lugs 118 a and 118 b which are closest to the hinge portions 111 a and 111 b are spaced from the hinge portions by distances at least as large as the depth of the flanges 114 a and 114 b measured from the spine portion 111 so that the housings 5 a and 5 b held by the lugs against the inner surfaces of the cover portions 112 and 113 will clear the flanges 114 a and 114 b when the cover portions are in their closed positions. The foregoing arrangement further makes it possible to reduce the overall width of the closed storage case 110 while accommodating a relatively large number of disc-shaped recording media therein. Referring now to Figures 7 to 14, it can be seen that, a storage case 210 is provided which, as in the case of the storage case 10 of Figures 1 and 2, can accommodate a total of three floppy discs or other disc-shaped recording media in their respective rectangular housings or envelopes 5 a , 5 b and 5 c (Figure 10). More specifically, the storage case 210 is shown to be constituted by a one-piece moulded plastics member which includes a middle spine portion 211 having opposed side edges tapering into flexible hinge portions 211 a and 211 b of reduced thickness (Figure 14) to which tapering side edges of rectangular cover portions 212 and 213, respectively, are integrally joined so that the cover portions are swingable relative to the spine portion 211, and hence relative to each other, about the hinge portions 211 a and 211 b between closed positions (Figure 10) and opened positions (Figure 9). The rectangular cover portions 212 and 213 have peripheral walls or rims 212 a and 213 a , respectively, extending along the three sides of the cover portions which are not joined to the hinge portions 211 a and 211 b . In the closed positions of the cover portions 212 and 213, their inner surfaces 212 b and 213 b confront and extend substantially parallel to each other from the spine portion 211 with the edges of the peripheral walls or rims 212 a and 213 a being in abutting interlocking engagement with each other, as at 219 in Figure 10. In the storage case 210, means are provided in the cover portions 212 and 213 to hold the housings 5 a and 5 b (Figure 10) containing respective disc-shaped recording media against the inner surfaces 212 b and 213 b of the cover portions 212 and 213, respectively. As shown in Figures 8, 10 and 11, such means for holding the housings 5 a and 5 b against the inner surfaces 212 b and 213 b comprise pairs of spaced apart lugs 217 a and 218 a projecting integrally inward from the surface 212 b of cover portions 212, and by similar pairs of spaced apart lugs 217 b and 218 b projecting integrally inward from the inner surface 213 b of the cover portions 213. As shown in Figure 8, the distances d 2 between the paired lugs 217 a and between the paired lugs 218 a , and between the paired lugs 217 b and the paired lugs 218 b are approximately equal to the orthogonal dimension d 1 (Figure 1) of the rectangular housing of a disc-shaped recording medium to be held thereby (Figure 1). Furthermore, as shown particularly in Figure 11, the surfaces of the paired lugs 217 a and of the paired lugs 218 a are formed with raised ridges 220 a , and the facing surfaces of the paired lugs 217 b and of the paired lugs 218 b are similarly formed with raised ridges 220 b . Thus, when the rectangular housings 5 a and 5 b containing respective disc-shaped recording media are inserted between the lugs 217 a and 218 a , and between the lugs 217 b and 218 b , respectively, with the cover portions 212 and 213 in their opened positions, the ridges 220 a and 220 b frictionally press against the adjacent side edges of the housings 5 a and 5 b , respectively, to hold such housings against the inner surfaces 212 b and 213 b of the cover portions. The storage case 210 is further shown to comprise a holder 214 integrally situated on the spine portion 211 and extending from the spine portion between the cover portions 212 and 213 in the closed positions of the cover portions (Figure 10) to embrace and hold the additional disc-shaped recording medium at an edge portion of its respective rectangular housing 5 c so as to accommodate such additional disc-shaped recording medium in its respective housing between the disc-shaped media contained in the housings 5 a and 5 b held against the inner surfaces 212 b and 213 b of the cover portions 212 and 213 when the cover portions are in their closed positions (Figure 10). As shown specifically in Figures 11 and 12, the holder 214 includes flanges 214 a and 214 b extending integrally from the spine portion 211 parallel to the opposed side edges of the spine portion and being spaced apart from each other frictionally to retain therebetween an edge portion of the housing 5 c containing a disc-shaped recording medium. More specifically, in this embodiment, the thicknesses of the flanges 214 a and 214 b taper in the direction away from the spine portion 211 so as to provide confronting flange surfaces 221 a and 221 b that diverge toward free edges of the flanges 214 a and 214 b and thereby facilitate the entry of an edge portion of the housing 5 c between the confronting flange surfaces (Figure 12). Further, spaced apart ribs 222 a and 222 b extend from the confronting flange surfaces 221 a and 221 b , respectively, substantially at right angles to the free edges thereof to define limited zones at which the flanges 214 a and 214 b will frictionally grip the housing 5 c of a disc-shaped recording medium inserted therebetween. By way of example, in the case of a 76.2 mm (3.5 inch) floppy disc which, as earlier noted, is contained in a housing or envelope having a thickness of 3.3 mm, the distance T 1 (Figure 12) between the base portions of the flanges 214 a and 214 b may be 3.5 mm, and such distance may diverge to a maximum dimension T 2 of about 3.8 mm at the free edges of the flanges, while the lateral distance measured between the ribs 222 a and 222 b is 3.3 mm for gripping the housing or envelope of a 76.2 mm (3.5 inch) floppy disc therebetween. As is shown in Figure 11, the ribs 222 a extending from the flange surface 221 a are offset, in the direction along the respective flange 214 a , relative to the ribs 222 b extending from the surface 221 b of the flange 214 b . By reason of such offset relationship of the ribs 222 a and 222 b , the frictional engagement of the holder 214 with an edge portion of the housing 5 c is effected at different locations on opposed surfaces of the housing 5 c so that the housing can be reliably frictionally held without jamming between the ribs 222 a and 222 b . Further, as shown in Figure 11, a substantially semi-circular projection 215 may extend from the bottom surface 214 c of the holder 214 between the flanges 214 a and 214 b at a location adjacent one end of the holder so as to be engageable in the similarly shaped recess 16 formed in an edge of the housing 5 c of the floppy disc or other disc-shaped recording medium, as previously described with reference to Figure 3. The opposite ends of the spine portion 211 are formed with semi-circular end plates 211 c (Figures 9 and 14) which are integral with the adjacent ends of the flanges 214 a and 214 b . As shown particularly in Figure 9, the end of the peripheral walls or rims 212 a and 213 a on the cover portions 212 and 213, respectively, that are adjacent the spine portion 211 have arcuate end edges 212 c and 213 c which mate with the semi-circular end plates 211 c when the cover portions 212 and 213 are in their closed positions. As shown particularly in Figure 13, the surface 214 d of each end plate 211 c which faces in the direction toward the space between flanges 214 a and 214 b is undercut in the direction toward the surface 241 c of the holder 214. Thus, when the housing 5 c of a floppy disc or other disc-shaped recording medium is inserted between the flanges 214 a and 214 b of the holder 214, the end surfaces 214 d of the holder engage the adjacent edge surfaces of the housing 5 c only at locations spaced from the surface 214 c so as again to avoid jamming of the housing 5 c in the holder 214. Finally, as shown schematically in Figure 8, suitably cooperative latch elements 223 and 224 are desirably moulded as integral parts of the rims 212 a and 213 a of the cover portions 212 and 213 releasably to hold the cover portions in their closed positions. The described storage cases are desirably injection moulded as one-piece integral members of a relatively flexible plastic material, such as, polypropylene or the like and, in each instance, are capable of conveniently accommodating three or more floppy discs or other disc-shaped recording media in their respective housings or envelopes.

Claims: A storage case (10,110,210) for disc-shaped recording media each contained within a respective substantially flat rectangular housing, the storage case comprising a one-piece moulded plastics member including a middle spine portion (11,111,211) having opposed side edges from which flexible hinge portions (11 a ,11 b ,111 a ,111 b ,211 a ,211 b ) extend, and a pair of rectangular cover portions (12,13,112,113,212,213) having side edges joined to respective ones of the hinge portions so that the cover portions are swingable relative to each other about the hinge portions between closed positions, in which the cover portions extend substantially parallel to each other from the spine portion with inner surfaces (12 b ,13 b ,112 b ,113 b ,212 b ,213 b ) of the said cover portions in confronting relation, and opened positions in which the cover portions are spread angularly apart, means (12 c ,13 c ,117 a ,117 b ,118 a ,118 b ,217 a ,217 b ,218 a ,218 b ) on each of the cover portions to hold a rectangular housing (5 a ,5 b ) for disc-shaped recording media against the inner surfaces of the respective cover portions, characterized by holder means (14,114,214) on the spine portion extending from the spine portion between the cover portions in the closed positions of the cover portions to embrace and hold at least one additional disc-shaped recording medium at an edge portion of a rectangular housing (5 a to 5 i ) thereof so as to accommodate the at least one additional disc-shaped recording medium in its respective housing between the disc-shaped recording media in their respective housings (5 a ,5 b ) held against the inner surfaces of the cover portions. A storage case according to claim 1, in which the holder means on the spine portion includes flanges (14 1 to 14 6 ) extending substantially parallel to the opposed side edges of the spine portion and so spaced apart from each other as frictionally to retain therebetween the edge portion of the housing of the at least one additional disc-shaped recording medium. A storage case according to claim 2, in which there are two of the flanges (14) spaced apart to accommodate therebetween only one of the additional disc-shaped recording media in its respective housing (5 c ). A storage case according to claim 2, in which there are two of the flanges (114 a ,114 b ,214 a ,214 b ) spaced apart by substantially a multiple of the thickness of the rectangular housing (5 c to 5 i ) for each the disc-shaped recording medium so that a corresponding plurality of the additional disc-shaped recording media in their housings (5 c to 5 i ) can be accommodated in the holder means. A storage case according to claim 2, in which there are at least three of the flanges (14 1 to 14 6 ) in parallel with each of the flanges being spaced from each of the flanges adjacent thereto by a distance approximately equal to the thickness of the rectangular housing (5 c to 5 i ) for each of the disc-shaped recording medium so that a single disc-shaped recording medium in its housing can be accommodated between each two adjacent ones of the flanges. A storage case according to claim 2, in which the flanges taper in the direction away from the spine portion so as to define confronting flange surfaces (221 a ,221 b ) that diverge toward free edges remote from the spine portion to facilitate entry of an edge portion of the housing of a disc-shaped recording medium between the confronting flange surfaces, and spaced apart ribs (222 a ,222 b ) extending from the confronting flange surfaces substantially at right angles to the free edges thereof to define limited zones at which the flanges frictionally grip the housing (5 c to 5 i ) of a disc-shaped recording medium therebetween. A storage case according to claim 2, in which the ribs (222 a ) extending from one of the confronting flange surfaces (221 a ) are offset, in the direction along the respective flange, relative to the ribs (222 b ) extending from the other (221 b ) of the confronting flange surfaces. A storage case according to claim 2, in which the housing of each disc-shaped recording medium has a recess (16) in an edge thereof, and the spine portion has a projection (15) extending therefrom between the flanges and shaped to be received in the recess (16) of the housing (5 c to 5 i ) of the additional disc-shaped recording medium to ensure that the disc-shaped recording medium has a predetermined orientation within the storage case. A storage case according to claim 2, in which the opposed side edges of the spine portion extend laterally beyond the outermost of flanges (14) by distances each approximately equal to the thickness of the housing (5 c to 5 i ) of the disc-shaped recording medium so that the housings (5 a ,5 b ) held against the inner surfaces of the respective cover portions can, in the closed positions of the cover portions, extend between the outermost flanges and the respective cover portions. A storage case according to claim 2, in which the means on the cover portions to hold respective disc-shaped recording media in their rectangular housings include, on each of the cover portions, integral pairs of spaced apart lugs (117 a ,117 b ,118 a ,118 b ,217 a ,217 b ,218 a ,218 b ) extending from the inner surface of the respective cover portion with the distance between the lugs of each of the pairs thereof being approximately equal to one of the orthogonal dimensions ( d 1 ) of the rectangular housing (5 a ,5 b ) to be held thereby so that each of the disc-shaped recording media held in its respective rectangular housing against the inner surface of the respective cover portion has edges of the rectangular housing frictionally retained by the respective pairs of the lugs. A storage case according to claim 10, in which the lugs of the pairs of lugs closest to the hinge portions are spaced from the hinge portions by distances at least as large as the depth of the flanges (14) measured from the spine portion to free edges of the flanges (14) so that the rectangular housings held by the lugs against the inner surfaces of the cover portions will clear the flanges when the cover portions are in the closed positions. A storage case according to claim 10, wherein the lugs (220 b ) of each of the pairs of lugs have confronting faces with ribs (220 a ) extending therefrom to define limited zones at which the lugs frictionally engage edges of the respective rectangular housings.

Inventors: IWAKI YUJI, KANEKO MIKA, KIKUCHI SHUICHI, KOBAYASHI TOSHIRO, IWAKI, YUJI, KANEKO, MIKA, KIKUCHI, SHUICHI, KOBAYASHI, TOSHIRO, Iwaki, Yuji, c/o Patents Div., Sony Corp., Kaneko, Mika, c/o Patents Div., Sony Corp., Kikuchi, Shuichi, c/o Patents Div., Sony Corp., Kobayashi, Toshiro, c/o Patents Div., Sony Corp.
Applicants: SONY CORP, SONY CORPORATION
Application year: 1992
Main classification: G11B33
IPC codes: B65D85, G11B33