WO2005119683A1

WO2005119683A1 - Cd or dvd disc case with disc presence indicator

Info

Publication number: WO2005119683A1
Application number: PCT/FR2005/050342
Authority: WO
Inventors: Frédéric Itey
Original assignee: Itey Frederic
Priority date: 2004-05-26
Filing date: 2005-05-19
Publication date: 2005-12-15

Abstract

The invention relates to a disc case for a disc such as a CD or DVD disc, formed in two halves, a lid and a housing, jointed to each other, said case having a housing for placement of the disc and a disc presence indicator, visible on the spine of the case. The presence indicator (5) is a lever (51), supported in the case, comprising a first arm (51-1), extending into the housing (L) for the disc, a second arm (51-2) with a display flap (52) for appearing at the spine (12) of the case and hinge point (51-3), for hinging on placement of the disc (D) in the housing thereof (L), between a first position in which the first arm (51-2) extends into the housing chamber (no disc) and a second position (disc present), in which the second arm is pushed by the disc, the lever (51) positioning the flap (52) in two different positions on the spine (12), each corresponding respectively to each of the two positions of the first arm (51-1) of the lever (51) in the disc housing (L),the lever (51) begin tensioned towards the first position thereof.

Description

Field of the Invention The present invention relates to a disc case such as a CD or DVD disc, formed of two parts, a cover and a receptacle, hinged together. one to the other, this case having a housing for the location of the disc and a disc presence indicator visible from the back of the case. STATE OF THE ART There are different CD disc cases with presence / absence discs in the case. Such devices are described in particular in the documents: Aim of the invention The aim of the present invention is to develop a CD or DVD disc box fitted with a disc presence indicator, which is particularly simple to make and install. for cases with or without a tray, thin rigid cases and thin flexible cases, allowing a particularly visible display of the state of the case when it is integrated in a stack of cases and even if the backs of the cases do not are not perfectly aligned and very insensitive to the positioning of the disc in the case. Description and advantages of the invention For this purpose the invention relates to a housing of the type defined above, characterized in that the presence indicator is a lever carried by the housing and having - a first arm projecting into the housing of the disk,

a second arm carrying a display flap intended to appear at the back of the housing,

a tilting point for being tilted by placing the disk in its housing between a first position in which the first arm projects into the volume of the housing (absence of the disk) and a second position (presence of the disk), wherein the second arm is pushed by the disc, the lever having the flap in two different positions at the back, corresponding respectively to each of the two positions of the first arm of the lever in the disc housing, the lever being returned to its first position. This box is particularly simple to make and use. The tray is only provided with an opening for the passage of the presence indicator lever. This presence witness can have different forms at the level of its display panel to serve in particular as an advertising medium in addition to its function of information on the presence or absence of the disc. This display can be positive or negative depending on whether the position of the display window corresponds to the position of the display flap in the position of disk occupancy or no disk. The operation of the presence indicator is particularly reliable since the presence indicator is only subjected to a tilting movement around its tipping point, with natural return to its first position. The fatigue imposed on the lever is very low and makes it reliable. However, for reasons of display or classification of the discs, as the tray is very easily dismountable, it is possible a posteriori to change the display indicator and replace it either for reasons of wear or for reasons of classification. and display also allowing identification by a color code. The tray defining the disc housing has, in its edge rising towards the wide edge, an opening either in the form of a simple slot for the passage of the lever, retaining the lever and forming a tilting point. This opening can also represent a significant part of the height of the rising edge according to the embodiment of the lever. According to one embodiment, the lever is fixed to the wide edge of the plate by a link forming the tilting point, between the first arm of the lever subjected to the action of the disc and the second arm carrying the display flap. According to another characteristic, the linkage of the lever consists of a support fixed to the wide edge and carrying an articulation element receiving an articulation element of the lever. This embodiment of the presence indicator makes it possible to separately manufacture the support used for fixing it to the wide edge and the lever carrying the movable flap. This simplifies the production of molds, these different parts being made of injected plastic. According to one embodiment, the lever carrying the movable flap pivots in the articulation by the effect of its weight or by the antagonistic action of the disc pressing the lever to tilt and lift it. This embodiment is particularly simple if the support comprises a branch carrying the articulation element at the level of the passage of the plate. The articulation is constituted by a pivot receiving a female part, the pivot being able to be carried by the support or by the lever and the female part by the other part. The pivot can consist of two pivot elements between which a female part is engaged. It can also be a pivot connecting two branches and on which is clipped a female part in the form of a split sleeve. According to another advantageous characteristic, the articulation element of the lever carries locking surfaces or a tongue for blocking the pivoting of the lever by the edge of the cover of the housing when the latter is closed. Thus, there is additional security in the case where a disc is placed in the case because even if the disc lifts from its housing, the presence indicator retains the position indicating the presence of a disc in the case. Conversely, in the absence of a disc, when the housing is closed, the latter being assumed to be in a substantially horizontal position, the lever rocks under the effect of its weight and it is held in this tilted position by the edge of the cover s 'pressing on the corresponding blocking surface, regardless of the future position of the housing. In the case of the tab, the latter is retained by the edge of the cover either against the wide edge when a disc is placed in the housing or beyond the edge of the cover, inside the housing. In both cases the pivoting of the lever is blocked or at least cannot change the display position. According to another advantageous characteristic, the support comprises clipping studs coming into the housings of the wide edge to fix the support to the wide edge. According to another embodiment, the lever is fixed to the bottom of the plate by its end opposite to that carrying the flap and the point of actuation of the disc against the lever is located between the end forming the tipping point and the carrying arm. the blind. According to another advantageous embodiment, the lever forms an integral part of the plate or of the bottom of the case by being cut out therein; the link point of the lever constituting its tipping point, the lever continuing with the first arm against which the disc rests and beyond it, the second arm carrying the display flap. These different embodiments with the lever either fixed under the wide edge of the tray or at the bottom of the tray or being part of the tray or the wide edge, constitute as many particular solutions, simple and each offering its own advantages of realization or use. For the display of information on the display panel, this information can be provided at the same time as the indicator. It can also be a label stuck on the front face of the flap. The display window at the back of the housing is formed either by the transparent back at the display flap or, for its display position, the other position being obscured, or even in combination with a housing produced in the wide edge serving either as a cover for the shutter or, on the contrary, as a window. Thus, according to a first interesting embodiment, the back is transparent at the level of the display flap and the wide edge of the tray includes a housing receiving the flap in its second position. According to a reverse embodiment, the back is opaque and the front of the wide edge has a cut-out in which the display flap comes for its first position. According to another interesting characteristic, the display flap is part of the wide edge. Thus, the display flap is cut in the wide edge to which it is connected by a hinge forming the tilting point and it switches between a first position in which it is received in the cut of the wide edge and a second position in which the flap is clear of the cutout. According to a particularly advantageous embodiment of the indicator for its fixing and its tilting point, the lever is articulated to a V-section attachment with two branches, one of which is fixed under the wide edge and carrying a fixed flap forming a cover for the movable flap occupying its second position, the other branch being connected to the lever. According to another advantageous and simple characteristic, making the display practically independent of the back, the lever is connected at its articulation to a branch forming a dihedral with the lever and carrying at its free end, a fixed flap forming the cover for the display pane. According to another characteristic, the dihedral-shaped part comprising the lever, its flap and the branch and its flap is placed with its branch in a housing made in the bottom of the plate or the bottom of the housing. According to another advantageous characteristic, the first arm of the lever has a bearing surface for the back of the disc and the lever continues with its second arm folded in a hairpin and ending with the display flap, so that when from the positioning of the disc in its housing, the edge of the disc rests on the lever then pushes it by tilting it from its first position to its second position. According to an advantageous characteristic, this lever folded back in a hairpin with its bearing surface for the back of the disc is carried either by the rising edge or not the bottom of the tray. It can also be part of the rising edge or the bottom of the tray. In summary, the disk case according to the invention is of a particularly simple and reliable embodiment and use regardless of the particular characteristics of embodiment of the display means and of the lever forming the presence indicator. Drawings The present invention will be described below in more detail using different embodiments of the invention shown schematically in the accompanying drawings which are all sectional views of a disk case at its edge located on the side of the hinge or the joint between the cover and the bottom, and this on a very enlarged scale. So :

- Figure 1 is a section through a first embodiment of a disk case equipped with a tray and a presence indicator, - Figure 2 is a sectional view of an alternative embodiment of the figure 1,

FIGS. 3 and 4 show a variant of the embodiment of FIG. 2 of a housing with a witness fixed under the housing and of its variant,

FIG. 5 is a sectional view of the third embodiment of a housing with an integrated presence indicator of the wide edge of the housing,

FIG. 6 shows a fourth embodiment of a housing and a lever-shaped presence indicator,

FIG. 7 shows an alternative embodiment of FIG. 6, FIG. 8 shows a fifth embodiment,

FIG. 9 shows a first variant of FIG. 8,

FIG. 10 shows a second variant of FIG. 8,

- Figure 11 shows another variant of Figure 8, - Figure 12 shows a sixth embodiment in which the presence indicator is part of the plate,

FIG. 13 shows a seventh embodiment with a presence indicator in the form of a hairpin carried by the plate,

- Figure 14 is a variant of Figure 13. - Figure 15 shows an eighth embodiment applied to a thin box without tray,

FIG. 16 shows an alternative embodiment of FIG. 15,

FIG. 17 shows another variant of FIG. 15,

- Figure 18 shows another variant of Figure 15, - Figure 19 is a sectional view similar to Figure 1 showing another example of the embodiment of Figure 1,

- Figures 20A, 20B show an embodiment of the object of Figure 19 in two positions, one with a disc in the housing, the other without a disc, - Figures 21 A, 21B show two views in perspective of a support and a lever of another exemplary embodiment corresponding to the block diagram of FIG. 19,

- Figures 22A, 22B show two other forms of support for a presence indicator according to Figure 19, - Figure 22C shows an embodiment of a lever for the support according to Figures 22A or 22B,

FIG. 23 shows another example of the embodiment of FIG. 1,

- Figure 24 shows a variant of the embodiment of Figure 1 - Figures 25A, 25B show another embodiment of the object of Figure 19 in two positions one with a disc in the housing, the other without disc. Description of embodiments To simplify the description of the different embodiments and their variant, the same references will be used for the identical elements of the different embodiments and similar references for elements of the same function or of equivalent function. Figure 1 shows a CD or DVD disc case composed of a first part forming the receptacle 1 and a second part forming its cover 2. These two parts 1, 2 are hinged to each other by an articulation formed of two lateral pivots, not appearing in this figure. This box is provided with a plate 3 with a housing L receiving the disk D. The disk D and the housing L are only shown for their ends situated to the left of the figure. The housing has a relatively large height relative to the thickness of the disc D because the cover 2 generally receives on its inner face facing the disc, a document or notebook describing the disc or serving as an advertising medium. The plate 3 consists of a bottom 31 delimiting the housing L which extends on the side of the articulation between the cover and the receptacle by a rising edge 32 followed by a wide rising edge 32 continuing between the cover and the receptacle 1 by a wide edge 33 reaching to the left end of the receptacle 2 constituting the back 12 connected to the bottom 11 of the receptacle 1. The part of the housing located under the broad edge 32 is a hollow and empty cavity 4. The rising edge 32 delimits the housing L and joins the wide edge 33 of the plate; it has an opening 34 in the form of a slot for passing through a presence indicator 5 constituted by a lever 51 carrying a display flap 52. This lever 51 in the form of a tongue, shown diagrammatically in section, is carried by the housing . The lever 51 passes through the opening 34 which constitutes a tilting point (or zone) 51-3. The lever 51 has two arms 51-1, 51-2: its first arm 51-1 projects into the housing L of the disc; the second arm 51-2 passes into the cavity 4 under the wide edge 33 and its end carries the display flap 52 in a position substantially parallel to the back 12. The flap 52 has a width (dimension perpendicular to the plane of the figure) greater than that of the lever 51. The tilting point 51-3 of the lever 51 is located here between the two arms 51-1, 51-2, which corresponds to a lever of the first kind. Figure 1 shows the two extreme positions of the lever 51: - the first position is drawn in broken lines. The first arm 51-1 is raised and the second arm 51-2 is lowered. This position is the natural position in which the lever 51 is recalled and thus the presence indicator 5, in the absence of a disc D in the housing (L) of the housing, - the second position drawn in solid lines represents the state of the lever 51 and of the presence indicator 5 when a disc D is placed in The box. The lever 51 is at least partially flexible and can be depressed by the disc D while being elastically deformed. This elastic deformation concerns not only the first arm 51-1 but, in general, also the second arm 51-2 which abuts in its raised position against the wide edge 33. Generally, the lever 51 is made of a material relatively flexible, deformable while operating as a lever pivoting around its tipping point 51-3. This elasticity makes it possible to absorb the difference in travel of the two arms of the lever. To guarantee proper operation, it is advantageous for the tilting stroke of the arm 51-1 pushed by the disc D to be greater than the stroke made by the arm 51-2 carrying the display flap 52. Thus, the latter will be in abutment at the end of the stroke and the first arm 51-1 or actuating arm can continue its movement by deforming elastically. The passage of the lever 51 through the opening 34 of the rising edge 32 of the plate 3 and consequently the very position of the lever and of the indicator 5 relative to the housing are located substantially in the median plane of the housing. The back 12 of the receptacle 1 forms a display window by virtue of the transparency of the material of the casing or by cutting out a part of the back if the latter is opaque (which is rare for this type of casing) or even by removing the part of the rear label (or label from below), usually blocked between the bottom 11 of the receptacle 1 and the plate 3 and rising from the side of the back 12 to appear there by transparency. This label is not shown. In the example of FIG. 1, at the level of this central region of the back 12, two parts FI, F2 have been distinguished, one above the other. The part FI corresponds to the non-obscured or transparent display part, that is to say the window and the other part F2 is obscured. The arrow B shows diagrammatically the view of the display flap 52 behind the part FI; it then actively indicates the absence of disk D in the housing. The obscured part F2 is produced by a cover 53 placed or fixed at the back 12 outside or preferably inside the housing. Under these conditions, the display flap 52 is visible in the first position of the lever 51. When the flap 52, moved by the lever 51, occupies its second position (tilted therein by the installation of a disc in the housing), it comes behind the cover 53 (part FI) and will not be visible. The flap 52 is substantially perpendicular to the arm 51-2 or, at least, it makes an angle with it so as to be relatively parallel to the surface of the back 12 in the display position. The angle α is frozen. The flap 52 carries simple but very significant information when it appears through the back 12 so as to be perceived immediately and above all in an almost automatic manner without requiring an effort of interpretation. The display flap 52 carries on its front face an inscription, a symbol, a pictogram or possibly only a colored surface, preferably bright to be very perceptible, even in poor visibility conditions, in the dark or if the housing is seen in an inclined direction or if the window is not transparent but is only translucent. The display surface of the flap 52 can also be made of a reflective material or a catadioptric effect. The shutter can also receive a label corresponding to advertising information. As in this embodiment, the first position (FI) of the flap 52, in the absence of a disc in the housing, is located below the second position (F2) of the flap behind the blocking strip, this makes it possible to give the flap 52 a large height, substantially equal to half the height of the back 12 so that the display surface of the flap is large. To make the display more noticeable, it may be advantageous to combine the information from the shutter with permanent information carried by the back 12 so that the concealment of the shutter 52 significantly and immediately disturbs the fixed information. Different optical effects can be used to produce an immediately perceptible display, even in poor lighting or readability conditions, to immediately distinguish and recognize the two states of indicator 5 (or of the shutter). It is, for example, a moiré effect, a combination of networks of lines, pictograms, partial images or half-images carried one by the shutter, the other by the back. The presence indicator 5 is advantageously made of a plastic material having a certain rigidity but also a good flexibility. The flap 52 is manufactured separately from the lever 51 or preferably with the latter in the same material. In this example, the tipping point 51-3 of the lever 51 is free, the lever being returned to its first position by the form of slot in the opening 34 of the plate 3 or by an elastic fixing point. This reminder is shown diagrammatically by the arrow A. The lever 51 can also be a shape memory part, naturally taking the curved shape corresponding to the first position (broken line) and tilting into the second position (solid line) by the thrust exerted by placing the disc, possibly crossing a metastable position but automatically returning to its first position as soon as the disc D is removed from the housing. The presence indicator 5 is placed in the housing preferably before the assembly of the plate 3 in the receptacle 2. It slides very simply through the opening 34 from the side facing the back 12 of the housing or receptacle 2. To retain the indicator 5 in the cavity 4 under the wide edge 33, one can play on a difference in width of the lever 51 at the tipping point 51-3, the second arm 51-2 being wider than the first 51-1 and the latter having just the width of the opening 34. In summary, according to FIG. 1, the presence indicator 5 constitutes a lever of the first kind whose tilting point 51-3 is located between its two arms 51-1, 51-2, the first arm subjected to the action of the disc D and the second arm carrying the display flap 52; this lever 51 is resiliently returned to its natural position, that is to say the first position. Figures 2 to 4 show variants of the first embodiment of Figure 1. Figure 2 shows a first variant. The opening 34 of the plate 3 is higher and corresponds to a large part of the rising edge 32. The tilting point 51-3 is formed by an elastic fixing point of the lever 51 under the wide edge 33. The other elements of the housing and its operation are identical to what has been described in connection with FIG. 1: The back 12 of the receptacle 1 forms a window by the lower part FI is cleared or transparent while the upper part F2 is obscured. The presence indicator 5 naturally occupies its position shown in broken lines: its first arm 51-1 is protruding in the housing L of the housing and its second arm 51-2 is in the low position, the flap 52 appearing behind the part FI of the window. This position is that of the absence of disk D in the housing. The second position is shown in solid lines; it corresponds to the presence of a disc in the housing. Figure 3 shows another variant which differs from that of Figure 2 in that the flap 52 of the presence indicator 5 is turned upwards and not downwards. The window (part FI) is formed by a cutout 35 in the wide edge 33, on the outside. This cut 35 constitutes by its thickness, the visible part FI (window), while the back 12 of the receptacle constitutes the obscured part F2. This occultation is for example due to the presence of the label of the box or to a cover 53. The operation of the indicator is the reverse of that already described:

in the first position, in the absence of a disc, the first arm 51-1 of the lever 51 remains in the cavity 4 and its flap 52 is obscured,

in the second position, the lever 51 shown in solid lines shows the flap 52 in the cutout 35 of the wide edge 33. The flap 52 is visible and indicates the presence of the disc in the housing. Figure 4 relates to another variant of the housing of Figure 1 showing the two positions of the display flap 52. The back 12 is transparent to the flap and in the thickness of the wide edge, there is a box 36 receiving the flap 52 for its second tilting position. The display corresponds to the display mode of FIG. 1: in its first position, the flap 52 appears behind the FI part of the back 12 while in the second position, it is concealed in the cavity 36. FIG. 5 shows a second embodiment of a case according to the invention consisting, as before, of a receptacle 1 provided with a cover 2 housing a plate 3 with a wide edge. However, the flap 52a is integrated into the wide edge 33a in which it is partially cut. It remains articulated at the wide edge 33a by a hinge 51 -3a made in the thickness of the material. The shape of the lever 51a is quite similar to that of the levers of the embodiments already described. The lever 51a consists of a first arm 5 there coming into the housing L of the disk D to be actuated by the latter. The lever passes through the opening 34 of the rising edge 32 of the plate 3. It continues to re- join part 52a. In fact, the flap 52a constitutes both the display flap and at least part of the second arm 51 -2a of the lever, the articulation 51 -3a representing the point of tilting of the lever. The lever 51a is fixed to the flap 52a by a connection, for example by gluing. The elasticity of the hinge 51 -3a recalls the flap 52a and its lever 51a naturally in the first position shown in dotted lines. The flap 52a is then tilted inside the cavity 4 under the wide edge 33a of the plate. It appears through the transparent FI part of the back. This position corresponds to the absence of disk D in the housing. When a disc is placed in the housing, it presses on the first arm 51a of the lever 51a which thus pushes the flap 52a upwards and retracts it into the thickness of the wide edge 33a. FIG. 6 shows a fourth embodiment of a tray housing the lever 51b of which consists of a first arm 51-lb which passes through the passage 34 of the tray 3 and projects into the housing L of the disc D. The second arm 51 -2b in the extension of the first arm 51-lb is formed both by this extension and by a branch 62 of a fastener 6 with a V section or in the form of a dihedral with two branches 61, 62 joined together at their apex by a hinge-type connection forming the tipping point 51 -3b.

- The first branch 61 is fixed under the wide edge 33 of the plate 3, for example by bonding.

- The branch 61 ends at the front on the back side 12 by a fixed flap 63 forming a cover. The second branch 62 is combined with the second arm 51 -2b of the lever 51b. It carries the display flap 52b (movable flap). The second branch 62 and the second arm 51 -2b are shown as separate parts. In practice, it may be the same part connected to the first branch 61 by the tilting point 51 -3b, elastic. The first branch 61 mainly serves as a support for the tipping point and also for the fixed flap 63 forming the cover. According to a variant not shown, the first branch does not have a fixed flap and the cover is fixed directly to the housing or is produced by the latter, for the part F2. In this example, the movable and fixed shutters are turned towards each other; the lever 51b is fairly strongly curved and the angle α between the display flap 52b and the second arm 51 -2b or the branch 62 is a acute angle so that taking into account the movement of the lever 51b, the flap 52b is placed parallel to the back 12 in its display position, behind the part FI. In its concealment part behind the cover 63, its orientation is then inclined but this inclination does not matter. In the natural position, in the absence of a disc in the housing, the lever 51b occupies the position shown in broken lines. Its flap 52b is lowered and appears through the lower part FI of the back 12 under the fixed flap 63. The information carried by the movable flap 52b is visible when looking at the back of the housing. The lever 51b is returned to this position by the elastic articulation of the tilting point 51 -3b. When a disk D is placed in the housing L of the housing, it pushes in the first arm 51-1 which causes the second arm 51-2b to tilt around its tilting point 51 -3b, elastic and retracts the display flap 52b behind the fixed flap 63. The information displayed by the display flap 53b thus disappears behind the fixed flap 63. The variant of FIG. 7 differs from the embodiment of FIG. 6 in that the display flap 52c carried by the second arm 51-2 of the lever and the fixed flap 63 carried by the first branch 61 are oriented in the same direction so that when the lever 51c occupies its second position, it is practically pressed against the branch 61 of this structure 6 in the form of a dihedral constituted by the two branches 61, 62 connected by the tilting point 51 -3c. The display produced by this variant is of the same nature as that of FIG. 6: in the first position, the flap 52c displays information which appears at the lower half (part FI) of the back 12 of the housing and in the second position, the flap 52c is retracted behind the fixed flap 63 (part FI). The fixed flap 63 can also be replaced by a cover carried by the back 12 of the housing, obscuring the part F2. As a general remark, in the embodiments of Figures 2 to 7, the opening 34 in the rising part 32 of the plate is relatively wide. Figures 8 to 12 show a fifth embodiment and different variants thereof. Figure 8 shows the fifth embodiment of a housing formed of two parts, a receptacle 1 and a cover 2 joined by a joint not shown and receiving a plate 3 defining the housing L for the disc D. The lever 51d carrying the flap 52d and constituting the presence indicator 5d is a lever of the second kind; it is housed in the cavity 4 under the wide edge 33 of the plate 3 and protrudes into the housing L of the disc D by passing through an opening 34 in the rising part 32 of the plate. The two arms 51-ld; 51-2d of the lever 51d are aligned: the first arm 51-ld is its part coming into the housing and its second arm 51-2d is its part coming into the cavity 4 under the wide edge 33. The end of the first arm 51 -ld of the lever is connected to the receptacle 2 or to the plate 3 by a tilting point 51-3d, elastic which recalls (arrow A) the lever 51d in its first position shown in broken lines in the absence of disk D. The point tilt 51-3d is the attachment of the end of the first arm 51-ld to the plate 3 or to the receptacle 1 or else a hinge belonging to an extension 54d of the arm 51-ld and which is fixed to the plate 3 or to the receptacle 1. This hinge is formed so that the lever 51d naturally returns to its raised position or first position in the absence of a disc in the box. The second arm 51-2d carries at its end the display flap 52d. This lever 51d functions as a lever of the second kind: the end of the first arm 51-ld which arrives in the housing L is the tipping point 51-3d: the disc D rests on the first arm 51-ld between the flap 52d and the tipping point 51-3d. The display flap 52d switches between its two positions behind the parts FI, F2 of the back:

- the first position (broken line) signals the absence of the disk D in the transparent or at least translucent FI part;

- the second position (solid line) conceals the flap 52d behind the cover 53 of the F2 part of the back 12. But by inverting the occultation one could signal the presence of a disc D and conceal the display flap 52d in its first position. FIG. 9 shows a variant of the box of FIG. 8. The presence indicator 5d comprises a lever 51d and its flap 52d connected to a branch 61 of similar shape also terminated by a flap 63 on the back side 12 of the housing, in dihedral shape. The lever 51d integrating with the branch 61 is articulated at the level of the dihedral edge by an elastic articulation forming a tilting point 51-3d which recalls the- sink 51d in its first position shown in broken lines corresponding to the absence of disk D in its housing L. When the disk D is placed in its housing, it crushes the lever 51d and the plate against the fixed branch 61 so that the display flap 52d disappears behind the fixed flap 63. This changes the display through the part FI forming the window of the back 12 of the housing. In this variant, the lever 51d is held in place in the housing by the branch 61 pressed against the plate 3. FIG. 10 is another variant of the embodiment of FIG. 8 (or its variant of FIG. 9). The plate 3 not only includes a passage 34 for the lever 51d at the rising edge 32 connecting the bottom 31 to the wide edge 33 but also a cutout 37 in the bottom 31 to partially house the lever 51d and its fixed branch 61. The other elements of this embodiment are the same as those of FIG. 9. FIG. 11 shows a variant of the embodiment of FIG. 10. The display flap 52d of the lever 51d is turned towards the fixed flap 63 of the branch 61 The lever 51d is returned naturally to its first position shown in broken lines. When a disc D is placed in its housing L, it pushes the first arm 51-ld of the lever and deforms it elastically; the arm 51-ld bears against the branch 61 and the fixed flap 63 hides the display flap 52d. FIG. 12 shows a sixth embodiment of a box with a presence indicator 5e formed by a lever 51e of the second kind forming an integral part of the plate 3. The lever 51e produced at the same time as the plate in which it is cut out or separated from the molding remains connected to the bottom of the plate only by a link forming the elastic tilt point 51 -3e. The lever 51e is naturally returned to its first position shown here in broken lines. When a disc D is placed in its housing L it is supported on the first arm 51- the lever and makes it descend to come into its second position (shown in solid lines). The display mode can be done as already described above, showing the flap 52 ^e carried by the lever 51 ^e in its first or in its second position. The first position indicating the absence of a disc is the one chosen preferably. Figures 13 and 14 show a seventh embodiment of a disk housing provided with a presence indicator 5f. According to FIG. 13, the presence indicator 5f is a lever 5 lf carried by the rising edge 32 of the plate 3 and folded in the shape of a hairpin to constitute a lever of the second kind highlighting a bearing surface for the disc D. Thus this lever 51f consists of a first arm 51-lf, the end of which is connected to the edge 32 of the plate 3 by constituting a tilting zone 51-3f descending into or in front of the opening 34 of the rising edge 32 in a hairpin shape; the top of this hairpin shape constitutes the bearing surface 51-4f of the disc D protruding into the housing L. The lever is extended by the second arm 51-2f passing through the cavity 4 under the wide edge 33 of the tray 3 and carrying at its end a display flap 52f appearing behind the back 12 of the housing. The presence indicator 5f is represented in its two extreme positions:

- the first position (dashed line) in which it is located or towards which it is recalled (arrow A) in the absence of a disk D in the housing or as soon as the disk is removed from the housing;

- the second position (in solid lines) that it takes when it is pushed or deformed by the disc placed in its housing. For the first position, the display flap 52f is located opposite the part FI of the back 12 and appears through it (arrow B) indicating the absence of a disc in the housing. For the second position, the flap 52f appears behind the part F2 and it is obscured by the cover 63. It is also possible to reverse the display mode by placing the cover at the level of the part FI of the back. This embodiment has the advantage of using not only the elasticity of the point or tilting area 51-3f but also the elasticity of the lever 51f but also of guiding the edge Dl of the disc D when it is introduced into the housing L and to set the presence indicator 5f in its second position by contact with the edge Dl of the disc, regardless of the degree of wear of the central rosette, not shown, of the plate 3 receiving the central hole of the disc D. This mode of embodiment allows various variants not shown separately: the lever can be an extension of the plate and be integral with it or be produced separately and then fixed to the plate or even include an extension to be fixed behind the rising edge or under the wide edge. FIG. 14 shows a variant of this seventh embodiment consisting in reversing the arrangement of the indicator 5g. This is always a lever of the second kind. The end of the first arm 51-lg is carried by the bottom 31 of the plate 1 by a tilting point 51 -3g from which it protrudes into the housing L then continues with the second arm 51 -2g bent in the cavity 4 under the wide edge 33 to present the display flap 52g carried by its end behind the back 12 of the housing. The two extreme positions of the 52g flap are as follows:

- the first position (broken line): the first arm 51-lg is tilted in the housing L and the display flap 52g is behind the part FI showing the absence of a disc in the housing.

- the second position (solid line): the first arm 51-lg is pushed back towards the cavity 4 by the edge Dl of the disc D and its display flap 52g comes behind the part F2 of the back 12 of the housing; in this position, the flap 52g is obscured by the cover 63 placed behind the back 12. The tipping point 53-3g of the lever 51g can be achieved by attaching the lever 51g to the plate or as shown, by a branch 54g extending the lever 51g fixed to the plate 3. This fixing is shown schematically here as in the other embodiments by X-shaped crosses. FIGS. 15 to 18 show a seventh embodiment of a box fitted with a disc presence indicator in the housing. In these examples, as shown in FIG. 15, the disc case is formed by a receptacle 1 and a cover 2 without tray having the shape of a conventional case but thinner, the disc being is simply placed in the part constituting the receptacle with a disc housing delimited by a round edge 13. Ve edge 13 is sketched only in Figure 15 which shows a partial section of the housing by a median plane. The edge 13 is not cut at this location because it is interrupted to allow the passage of the presence indicator. In an even simpler embodiment, the housing simply has the shape of a disc and ends on one side with a straight extension, forming the joint 14 between the two parts 1, 2 of the housing. In the first case, the cover is connected to the receptacle by a pivot joint. In the second case, the articulation is constituted by a hinge 14 produced by the material remaining between the two parts 1, 2. This second case is schematically shown in Figures 15 to 18, on a different scale from those of the previous figures. According to FIG. 15, on the side of the articulation 14, the box has a window 22 produced by a cutout or by the transparent or translucent back. The housing receives a presence indicator 5 in the form of a lever 51h of the second kind, the end of the first arm 51-1h of which carries an articulation forming the tilting point 51-3h. The first arm 51-1h continues with the second arm 51-2h provided with a display flap 52h; disc D rests on the first arm 51-lh. The lever 51h is connected by the tilting point 51-3h to the bottom 11 of the housing or also as shown, the first arm 51-lh is extended by a branch 54h fixed to the bottom 11 of the housing, for example by gluing. The tipping point 51-3h is then formed by the material of the lever 51h folded over its branch 54h. The tilt point 54h is elastic and recalls the lever 51h in its first position. For display, half of the back 22 constitutes a window FI and the other half 12 is made opaque (F2), naturally or by a concealing element such as a label 63 placed against the inner (or outer) wall of the back). In the absence of a disc, the lever 51h naturally occupies its first position (shown in broken lines), its articulation 51-3h recalling it to this position. When a disc D is placed in the box (this disc occupies substantially the entire height of the box unlike in the case of a box with tray), it crushes the first arm 51-lh and causes the lever 51h to tilt with its flap d 52h display. Depending on the display mode chosen, the display panel 52h will be visible in the first position, or in the second position. FIG. 16 shows a variant similar to certain variants already described above. In this case the fixed branch 61 carrying the lever 51h ends on the back side by a shutter behind which comes the display shutter when a disc is placed in the box. The window can occupy the entire height of the housing. The display can consist either of presenting complete information when the lever 51h occupies its first position, its shutter carrying information and the fixed shutter 63 carrying additional information either making the information disappear or making it illegible or difficult to read when the lever 51h and its display flap 52h go into the second position and the flap no longer appears through the window on the back of the box. Figure 17 shows an alternative embodiment similar to the embodiment of Figure 15. In this case, the fixed branch 61 instead of being folded under the lever, is located in its extension and it is fixed to the bottom 11 of the housing , for example pasted. The figure shows the two positions of the lever 51h and of its flap 52h, the first position displayed behind the window FI in the upper part 22 of the back and the second retracted position behind the lower part F2 of the back. The reverse display is also possible by placing the window in the lower part and the opaque part in the upper part e. Figure 18 shows an alternative embodiment in which the lever 5 lj is integral with the bottom 11 of the housing from which it is separated on its three sides and remains secured by a tilting point 51-3j forming a hinge with elastic return in its first position (raised position). The window FI is preferably produced in the lower part 12 of the back of the housing, which constitutes an advantage for molding. This embodiment also makes it possible to display additional information when the lever 51j occupies the first position. In fact, the underside of the lever can receive an enlarged inscription by anamorphosis 51-4d in the form of a text, written or pictogram, and which remains legible through the window. FIG. 19 shows another example of the fourth embodiment of a tray housing, the presence indicator lever 51k consists of a first arm 51-lk which crosses the passage 34 of the tray 3 and projects in the housing L of the disk D and of a second arm 51 -2k in the extension of the first arm 51-lk. The assembly is articulated around the point of articulation 51 -3k carried by a fastener 6 fixed to the wide edge, in particular under the latter. The fastener 6 has two branches 61, 62:

- The first branch 61 is fixed under the wide edge 33 of the plate 3, for example by gluing or clipping, the branch 61 ends at the front of the back side 12 by a fixed flap 63 forming a cover or a surface d 'display, - the second branch 62 carries the point of articulation 51 -3k. According to a variant not shown, the first branch does not have a fixed flap and the cover is fixed directly to the housing or is produced by the latter, for the part F2. In this example, the movable 52k and fixed 63 flaps are turned towards one another. In the natural position of the indicator, in the absence of a disc in the housing, the lever 51k occupies the position represented by a broken line. Its flap 52k is lowered and appears through the lower part FI of the back 12 under the fixed flap 63. The information carried by the movable flap 52k is visible when looking at the back of the housing. The lever 51k is returned to this position by the elastic articulation of the tilt point 51 -3k or by its weight. When a disk D is placed in the housing L of the case, it pushes in the first arm 51-lk which causes the second arm 51 -2b to tilt around its point of articulation 51 -3k and retracts the display flap 52k behind the fixed flap 63. The information displayed by the display flap 53b thus disappears behind the fixed flap 63. FIGS. 20A, 20B schematically show a particular embodiment of the variant of FIG. 19. These figures are only partial section views on different section planes of the housing and the presence indicator. According to this example, the presence indicator or its lever is carried by a support 6 £ consisting of a branch 61 ^ intended to come under the wide edge 33. At the front, this branch 61 ^ is provided with the fixed flap 63 ^ . On the other side, the branch 61 ^ continues with a branch 62 ^ substantially following the return of the housing beyond the wide edge 33 to pass through the opening 34. This fixed branch 62 ^ ends with a pi element - vot 64 receiving the pivot element 51-3 ^ of the lever 51. This always consists of an arm 51-1 ^ intended to cooperate with the disc D and of an arm 51-21 carrying the flap 52 ^; these arms are joined at the articulation element 51-3 ^. This articulation element has a shape complementary to that of the articulation element 64 ^ of the support 6 £. In the case shown, the articulation element 64 ^ is a male element constituting a pivot and the element 51-3 ^ comes to cap it. Different examples of joints will be given using the following figures. It should be noted that the first arm 51-1 ^ is relatively short and somehow forms part of the articulation element 51-3 ^. This arm projects into the location of the disc D so that the disc can push it when it is placed in its housing. The arm 51-1 ^ is constituted by a relatively flat surface. Around the articulation element 51-3 ^, beyond the surface 51-1 ^ acting as the first arm of the lever, there is a second surface 51-4 ^ followed by a third surface 51-51 . The surfaces 51-4 ^ and 51-51 are each intended to cooperate with the lower face 22 of the edge 21 ending the cover 2 on the side of the wide edge 33: the edge 22 comes to rest on one or the other of the surfaces 51-4 ^ or 51-5 ^ to prevent rotation of the articulation element 51-3 ^ when the cover 2 is closed. The surface 51-51 constitutes a blocking surface of the presence indicator lever when a disc is placed in the case while the surface 51-4 ^ constitutes a blocking surface of the presence indicator lever in the absence of a disc in the housing. These two cases are represented in FIGS. 20A, 20B. in which the cover is shown in the closed position. According to FIG. 20A, when a disc D is placed in its housing of the case, it pushes back the arm 51-1 ^ and causes the lever of the presence indicator to tilt (double arrow F 10), thus lifting the display flap 52 ^ which, in this example, comes in front of the fixed flap 63. The reverse position can also be envisaged as has been indicated in connection with the various previous examples. When the lever 51 ^ occupies this position, the surface 51-51 of the articulation element 51-3 ^ is blocked by the lower surface 22 of the edge 21 of the cover 2. This blocking constitutes additional security in the event of accident. , disc D had to come out of its housing while remaining in the box. Such a situation can arise in the case where the central rosette of the tray of the case which normally retains the disc D, is tired or damaged. FIG. 20B shows the case of a closed case in the absence of a disc. In this case, the lever 51 ^ is tilted in its low position (double arrow F 10) by turning around the pivot formed by the elements 64 ^, 51-3 ^ under the effect of the weight of the branch 51-21 and the display flap 52 ^, the casing being assumed to be laid flat more or less horizontally. If the cover 2 is then closed, the surface 22 of its edge 21 comes to bear against the other blocking surface 51-41 of the articulation element 51-3 ^ and prohibits the rotation of this element and , through next, that of the lever 51 ^. Thus whatever the position in which the housing is located, the lever 51 ^ retains the position signaling the absence of a disc. Finally, the embodiment of FIGS. 20A, 20B shows an example of fixing the support 6 £ to the wide edge 33 of the housing by means of clipping studs 651 coming into orifices or cavities 331 produced in the wide edge 33 In this example, the articulation point is constituted by a male element 64 ^ on which a female element 51-3 ^ engages. The opposite solution is also possible. FIGS. 21 A, 21B show an example of a disk presence indicator corresponding, in principle, to that of FIGS. 20A, 20B. For the description of this presence indicator, the same references will be used as above, supplemented by the letter m. Thus, the support 6m consists of a branch 61m provided with two studs 65m and a fixed flap 63m. The support 61m continues with two parallel branches 62m, terminated by eyelets 64m forming articulation bearings. The lever 51m consists of a flap 52m connected to the second branch 51 -2m continuing with the articulation element 51 -3m to which the first lever 51-lm is connected. The articulation element 51 -3m is constituted by two aligned axis elements intended to come into the eyelets 64m of the support 6m. The geometry of the joint according to FIGS. 21 A, 21B is therefore the reciprocal shape of that shown in FIGS. 20A, 20B. Figures 22A, 22B, 22C show another example of a presence indicator. The 6m support is a short support and the 6p support is long. They are each provided with two pins 65m, 65p and a flap 63m, 63p. The branch 62m is split as before by two branches 62m, 62p joined by an axis 64m, 64p constituting an articulation element. The lever 51m with its flap 52m is provided with an articulation element 51 -3m female, enveloping the axis 64. This embodiment is that shown in FIGS. 20A, 20B. The other elements such as the abutment surfaces already described will no longer be so again with regard to the examples in FIGS. 21A-22C. Figure 23 shows another example of the embodiment of Figure 1. In this example, the passage 34 of the wall 32 of the plate 3 is reduced and the lever 51 has, at the tilt point 51-3q, two bosses 51-4q, 51-5q leaving between them a interval corresponding substantially to the thickness of the wall 34. The lever 51 thus engages in the passage 34 by elastic deformation and is retained by its bosses 51-4q, 51-5q. The other elements are the same as above and their description will not be repeated. FIG. 24 shows another example of the embodiment of FIG. 1, the tilting point of which is constituted by a transverse axis around which the lever 51-R pivots. this axis can be molded in the wall and the point of articulation 51-3 of the lever be constituted by a split sleeve clipped on the axis, it can also be elements of axis between which the element is engaged 51-3r sleeve-shaped joint. FIGS. 25A, 25B show another particular example of the variant of FIG. 19 and close to that of FIGS. 20A, 20B thus the identical or similar elements will hereafter have the same references with the suffix £ split and the full description will not be not repeated but will be limited to the most important differences. The fixed branch 62 ^ ends with a pivot element 64 ^ receiving the pivot element 51-3U from the lever 5 ££. This always consists of an arm 51-1 ^ intended to cooperate with the disc D and an arm 51-2 ^; these arms are joined at the level of the articulation element 51-3 ^ clipped onto the articulation element 64 ^ constituting a pivot. The arm 51-1 ^ is relatively short and somehow forms part of the articulation element 51-3 ^. This arm projects into the location of the disc D so that the disc can push it when it is placed in its housing. Beyond the arm 51-1 ^ of the articulation element 51-3 ^, there is a tongue 51-4 ^ intended to cooperate with the cover 2 on the side of the wide edge 33: the edge 22 blocks the tongue 51-4 ^ to prevent rotation of the articulation element 51-3 ^ when the cover 2 is closed. According to FIG. 25A, when a disc D is placed in its housing of the case, it pushes back the arm 51-1 ^ and switches the lever of the presence indicator (double arrow F 10), thus lifting the display flap 52 ^ which comes in front of the fixed flap 63. The reverse position can also be envisaged as has already been indicated. When the lever 51 ^ occupies this position, the tongue 51-4 ^ of the articulation element 51-3 ^ is locked by the edge 21 of the cover 2. FIG. 20B shows the case of the case closed in the absence of a disc. The lever 51 ^ is tilted in its low position by turning around the pivot formed by the elements 64 ££, 51-3U under the effect of the weight of the branch 51-2U and the display flap 52 ^, the housing being assumed to lie flat more or less horizontally. If the cover 2 is then closed, the surface 22 of its edge 21 is applied against the tongue 51-4 ^ and prohibits the rotation of this element and, consequently, that of the lever 51 ^. Thus whatever the position in which the housing is located, the lever 51 ^ retains the position signaling the absence of a disc.

Claims

CLAIMS 1 °) Case for a disc such as a CD or DVD disc, formed of two parts, a cover and a receptacle, hinged to each other, this case having a housing for the location of the disc and a presence indicator of the disc visible from the back of the housing, characterized in that the presence indicator (5) is a lever (51) carried by the housing and having

- a first arm (51-1) projecting into the housing (L) of the disc,

a second arm (51-2) carrying a display flap (52) intended to appear at the level of the back (12) of the housing,

- a tilting point (51-3) to be tilted by placing the disc (D) in its housing (L) between a first position in which the first arm (51-1) projects into the volume of the housing (absence of the disc) and a second position (presence of the disc), in which the second arm is pushed by the disc, the lever (51) presenting the flap (52) in two different positions at the back (12), corresponding respectively to each of the two positions of the first arm (51-1) of the lever (51) in the housing (L) of the disc, the lever (51) being returned to its first position.

2) disk housing according to claim 1, characterized in that the lever (51) is resiliently returned to its first position.

3 °) disc case according to claim 1, characterized in that it comprises a plate (3) defining the disc housing, and whose rising edge (32) on the side of its wide edge (33) has an opening ( 34) for the lever (51).

4 °) disk case according to claim 3, characterized in that the lever (51) is fixed to the wide edge (33) of the plate by a connection forming the tilting point (51-3), between the first arm (51 -1) of the lever subjected to the action of the disc (D) and the second arm (51-2) carrying the display flap (52). 5) disk housing according to claim 4, characterized in that the lever connection (51) is constituted by a support (6) fixed to the wide edge (33) and carrying an articulation element (64 ^, m, p) receiving a hinge element (51-3 ^, m, p) from the lever (51 ^, m, p).

6 °) disk case according to claim 5, characterized in that the support (6 £, m, p) has a branch (62 ^, m, p) carrying the joint (64 ^, m, p) at the level of the passage (34) of the plate (3).

7 °) disk housing according to claim 5, characterized in that one of the articulation elements is an axis forming a pivot receiving a female part forming the articulation element complementary to the other part.

8 °) disk housing according to claims 5 and 6, characterized in that the articulation element (51-3 ^, m, p) carries locking surfaces (51-4 ^, 51-51) of the lever (51 ^, m, p) against which the edge (21) of the lid rests when the latter is closed and the lever (51) is in one of its two positions (presence or absence of disc).

9 °) disk case according to claim 5, characterized in that the support (6, 1, m, p) comprises clipping studs (651, m, p) coming into s housings (31) of the wide edge (33) to fix the support (6 £, m, p) to the wide edge (33).

10 °) disc case according to claim 1, characterized in that the lever (51d) is fixed to the bottom (31) of the plate (3) by its end opposite to that carrying the flap (52d) and the actuation point of the disc (D) against the lever (51d) is located between the end forming the tilting point (51-3d) and the arm (51-2d) carrying the flap. 11 °) disc case according to claim 2, characterized in that the lever (51e, 51j) is an integral part of the plate (3) or the bottom (11) of the case being cut therein, the connection point of the lever constituting its tipping point (51 -3e, 51-3j), the lever continuing with the first arm (51- le, 51-lj) against which the disc bears and beyond it, the second arm (51-2e, 51-2d) carrying the display flap (52e, 51d).

12 °) disk case according to claims 2 and 3, characterized in that the back (12) is transparent at the display flap and the wide edge (33) of the tray (3) has a housing (36) receiving the flap (52) in its second position.

13 °) disk case according to claims 2 and 3, characterized in that the back (12) is opaque and the front of the wide edge (33) has a cutout (35) in which comes the display flap (52 ) for its first position.

14 °) disk case according to claims 2 and 3, characterized in that the display flap (52a) is cut in the wide edge (33a) to which it is connected by a hinge forming the tilting point (51 -3a ) and it switches between a first position in which it is received in the cutout of the wide edge (33) and a second position in which the flap is released from the cutout.

15 °) disk case according to claims 2 and 3, characterized in that the lever (51b) is articulated to a fastener (6) with V section with two branches (61, 62) one of which (61) is fixed under the wide edge (33) and carrying a fixed flap (63) forming a cover for the movable flap (52) occupying its second position, the other branch (62) being connected to the lever (51b).

16 °) disk case according to claim 4, characterized in that the lever (51d) is connected at its articulation to a branch (61) forming a dihedral with the lever and carrying at its free end, a fixed flap (63) forming the cover for the display flap (52d).

17 °) disk case according to claim 15, characterized in that the dihedral-shaped part comprising the lever (51d), its flap (52d) as well as the branch (61) and its flap (63), is placed with its branch (61) in a housing (37) made in the bottom (31) of the plate or the bottom of the housing.

18 °) disk housing according to claims 5 and 6, characterized in that the articulation element (51-3 ^) carries a locking tab (51-4 ^) of the lever (51 ^) cooperating with the edge (21) of the cover when the latter is closed to retain the articulation element in one of its two positions (presence or absence of disc).