FR2605596A1 - Container with a lid fitting over it having the same dimensions as the body and with extensible walls - Google Patents

Abstract

The invention relates to a polygonal container made of cardboard or similar material, of the type comprising a body and a lid fitting over it which must fit over the body in a cover-like manner. It is characterised in that the body and the lid are constituted by two identical parts 1 and 2 each of which has a bottom 100, walls 101, 102, 103 and 104 standing up with respect to the said bottom 100 and adjacent to each other, and tabs 131, 132, 133 and 134 which are integral with the ends of the walls 101 and 102 and which are each folded parallel to the plane of the adjacent wall 103-104 and which are fitted such that they are mobile with respect to the said wall 103-104 in order to have the capability of angular deflection corresponding to different inclinations of the wall 101-102 which supports them with respect to the bottom 100, each tab being marked with two grooving lines 135-141, 136-142 which converge towards the corner formed by the bottom 100, the tab in question and the wall which supports this tab.

Description

CONTAINER WITH STYLING LID OF MIMES DIMENSIONS
THAT IE BODY AND WALL FXI NSIBLF.S
the present invention relates to containers comprising a body and a cover, the latter having to be nested on the body.

 For this purpose, it is clear that the internal dimensions of the cover must be at least equal to the external dimensions of the body.

 Up to now, this simple problem of geometry has been solved by making bodies smaller than lids by matching them in pairs.

 However, this obvious solution has economic disadvantages - not only for the manufacture of the containers but also for their use.

 when the containers are made of cardboard, which is the most frequent case, they are obtained from blanks cut from plates by means of a tool of the qenre cookie cutter composed of blades arranged according to the desired contour. The need to have a body and a cover of different dimensions implies the creation of two different tools. In addition, to guarantee that the number of bodies will be equal to the number of covers, it is desirable to cut them together, in a memc plate, at least pair by pair. To these disadvantages are added those of the constitution of the batches, their stockaqe and their delivery without error.

 The user, on the other hand, must not only very carefully manage their stocks and carefully monitor the assignments to the workstations, but must also avoid the qaspillaqes which arise from the fact that an accidentally damaged part means that the part fitted will go to scrap when it is new, unless by pure chance it can come to complete a pair whose analogous piece was itself damaged. T.texperience shows that statistically accidents happen more often to the same type of part: where heavy or aggressive parts are conditioned, the bodies are torn apart while the covers are not; where large pieces are conditioned, the covers are torn when they fit together, etc. In each case, a single damaged part means two discarded parts.

 All this is inconvenient and leads to costs which we seek to reduce.

 the present invention provides a new solution, qrace to which one can use two identical parts for the body and the cover, although they must be nested one inside the other.

 To this end, the subject of the invention is a polyqonal container of cardboard or similar material, of the type comprising a body and a styling cover which must be fitted into a bell on the body, characterized in that the body and the cover are constituted by two copies of a dreary piece which has a bottom, walls erect with respect to said bottom and adjacent to each other, as well as legs which are integral with the ends of certain walls, which are each folded parallel to the plane of the adjacent wall and which are mounted movable relative to said wall in order to have the possibility of an ancillary clearance corresponding to different inclinations of the wall which carries them relative to the bottom, each leg being marked with two lines of rain which converge towards the corner formed by the bottom, the leg and the wall which carries the leg.

According to other features of the invention - a stop is provided to limit the ancillary travel of each
paw; - each wall adjacent to a wall bearing legs is double, at
less on part of its surface, that is to say that it includes a
exterior panel secured to the bottom and straightened, an irirl panel
laughing in solidarity with the previous one, folded back and held in place.

this situation, an intermediate part constituting a sidewalk
narrow parallel to the bottom preferably being provided between these two
panels so that they are face to face but spaced apart
which depends on the width of said sidewalk; - the legs are placed between the two panels, above the bottom,
below the sidewalk, and the sides of each leg are not para
alleles so that the tab has a shape allowing it to travel
ancillary limited by abutment on said sides, respectively on the bottom
and under the sidewalk; - the edges of the walls adjacent to those carrying the legs are
obliques ;; - the walls which carry the legs are higher than the paros
which have an edge adjacent to the mow as long
than him and a shorter opposite edge, each leg having
possibly an oblique side which extends from the top of the
wall which carries it to the plumb of the shortest edge
of said adjacent walls, - the edges which connect the edge adjacent to the bottom to the opposite edge
have a notch; - the oblique edge of each leg has a steeper segment,
substantially perpendicular to the shortest edge of the parpi
adjacent.

 The invention will be better understood from the detailed description below made with reference to the accompanying drawing. Of course, the description and the drawing are only given by way of an indicative and nonlimiting example.

 FIGS. 1 and 2 are schematic perspective views of two identical pieces in accordance with the invention, shown in sweats but obtained from a blank of corrugated cardboard cut, rolled and stored flat, as shown on FIG. 3.

 Figure 3 is a plan view of the cardboard blank from which a piece of Figure 1 and Figure 2 is obtained.

 Figure 4 is a schematic view showing the association of the two parts of Figures 1 and 2 to make a container having a body and a styling cover.

 Figures 5, 6 and 7 are partial schematic views showing the widening of the perimeter of the room to cover the other.

 Figures 8 and 9 are schematic views respectively in longitudinal section and in cross section of a container according to the invention, the cover of which is fitted onto the body.

 Figure 10 is a schematic cross-sectional view of a container according to the invention, the cover of which is eXbolte on the body, but according to a variant providing that the walls of the cover have a limited clearance so that they are at most in planes substantially perpendicular to the bottom plane.

 Figure 11 is a schematic view showing face to face two possible variants for carrying out the movement of the legs and for giving the finished part either a general shape of a trunk of a pyramid, or a general shape of a parallelepiped.

 Figure 12 is a schematic perspective view of a part corresponding to a particular embodiment of the invention.

 Fiqure L3 is a partial schematic view of the nene piece as that of Fiqure 12 and showing the clearance of the clean walls & this embodiment.

 Referring to Figures 1 to 3, it can be seen that a container according to the invention comprises two identical copies 1 and 2 of a spare part. This is of the type comprising a bottom and walls erected with respect to the bottom.

 Here, we have chosen the most common variant according to which the part is quadranqulaire and therefore has four walls but it could of course have a different number.

 Each piece here includes a rectangular bottom 100, qrandes walls called "lateral" 101 and 102 and two small walls called "frontal" 103 and 104. The walls 101 to 104 are integral with the bottom 100 but are distinguished by lines from rainaqe 105 to 108 along which the walls must be straightened when the piece is assembled.

 As this is known per se, the front walls are double, that is to say that they comprise an exterior panel 103-104 and an interior panel 113-114 intended to be folded down towards the shaft 100 and to be held in this situation. The panels 113 and 114 could be maintained by any known means such as glue or staples, but it is more advantageous, as is also known, to provide the panels 113 and 114 with tabs 115 and 116, which must penetrate, thanks to the elastic deformation of the bottom 100, in the notches 117 and 116 that the latter comprises. Depending on the thickness and elasticity of the material used, the notches 117 and 118 cross or do not cross the bottom 100. The height of the tabs is at more equal to the thickness of the bottom 100 except, of course, if it is desired that they protrude under the body of the container.

 Between the exterior panels 103-104 and the interior panels 113-114 there is an intermediate portion 123-124 which must constitute a narrow sidewalk at the top of the walls 103 and 104.

 The side walls 101 and 102 are integral, at each of their two ends, with a lug respectively 131; 132, 133 and 134, the free end of which is opposite to an oblique crease line 135, 136, 137 and 138, respectively. In addition, each of these tabs has another line of crease 141, 142, 143 and 144 respectively perpendicular to the outer edge of the side walls 101. and 102, which makes with the creasing line 135-136-137-139 an angle x. The outer c ^ tb 145-146-147-148 of the legs is offset relative to the free edges of the Side walls 101 and 102, but parallel to them, of a height at least equal to the thickness of the material constituting the third bottom 100 (here of corrugated cardboard) for a reason which will be understood later. The other side 151-152-153-154 is oblique with respect to the virtual extension of the line of rain 105-106 and makes therewith an anqle y.

 The panels 103 and 104 have edges 160 and 161 which are oblique and which make with the virtual extension P of the rain line 105-106 an anle 7. which can be equal to the angle x.

 The panels 313 and 114 have edges 362 and 363 which are oblique and symmetrical to the corresponding edges 360 and 361, relative to the axis of the sidewalk 323-124. Thus, when the panel 113-114 is folded towards the bottom 100 after the panel 303-304 has been straightened, the edges 360 and 162 on the one hand, and the edges 363 and 163 on the other hand are parallel and facing each other. two by two.

 To mount a piece in volume from the blank of FIG. 3, the side walls 301 and 102 are straightened and the tabs 333, 332, 333 and 334 are folded along the crease lines 335, 336, 337 and: 138 so that they extend in a plane perpendicular to that of the side walls 303 and 302. Then one straightens His panels 303 and 104 and folds the panels 313 and 134 twice at 90 degrees, the Song of the two lines of creasing which determine the pavement 323-324. The bottom 100 is elastically deformed in the region of the notches 117 and 118 to facilitate the insertion of the tongues 115 and 336 into the said notches or they remain blocked, as is known per se.

 We note that 3rd sidewalk 123-124 is a little wider than the thickness of the legs 131 to 134 so that they are not stuck but simply retained with gentle friction by the panels 303-313 and 104-114 located opposite. We also note that the crease lines 135, 336, 137 and 338 form the edges of the tarnished part and are oriented parallel to the edges 160-162 and 161-363. the piece thus has the general shape of a pyramid trunk, horn we see in Figures 3, 2 and 4. the drawing exaggerates this outline a little to highlight it because in reality, the slope of the edges can be less pronounced.

 The two identical parts of Figures 1 and 2 can obviously not be nested one inside the other as is. To achieve this, we must separate the walls in the shape of one of the two pieces that should constitute the complete container, in order to lengthen the perimeter of the one that will form the cover, which can be seen in Figure 4.

 This elongation is possible due to the combination of the angular debate of the legs 131 to 134, the presence of the rain lines 141, 142, 143 and 144 and the pivoting of the walls along the rain lines 105, 106, 107 and 108 .

 The movements of the various elements in question are broken down as will now be explained with reference to figures 7 to 7 on which a single corner of part 1 has been shown, knowing that the explanations given are obviously valid for all corners.

 This decomposition of the movements was adopted here to make it clear the "operation of the invention but in reality, the differentiated phases can be confused in more complex overall movements, especially when the container is made of a flexible material and / or elastic as can be, for example, a relatively thin corrugated cardboard. The thicker and / or rigid the material, the closer the operation is to the description below. The thinner and / or more flexible it is, the more it may lend itself to more approximate analysis adaptations.

 The situation in FIG. 5 corresponds to that of the finished part 1, as it appears in FIG. 1, after folding of the blank of the fiqure 3. The inclination of the wall 102, and of the wall 104 114 is evoked by the slope lines L1 and W. in solid lines. It should be noted that the lower edge 154 of the tab 134 is placed, and therefore in abutment, on the bottom 100, between the panels 104 and 114. The side 148 opposite the edge 154 is therefore oriented obliquely and is at a certain distance below the sidewalk 124. In this situation, the room is ready to be used as the body of a container, that is to say, for example, it can be presented at a filling station. Depending on the characteristics of the products to be placed in this body, the inclination of the walls may have no importance, especially in practice, this inclination may be almost insensitive.

 Assuming now that the part 1 is intended to constitute a covering cap, it is necessary to separate the facing walls two by two to enlarge the perimeter. On figure 6, we can see the movement of the different elements shown when the walls 101 and 102 are pivoted outwards, according to arrow Fl. At the end of the movement, the wall 102 has traversed an angle equal to the angle y: first 3 ′ angle yî equal to the pivoting along the edge 106 along the anqle x formed between them by the creasing lines 138 and 144 then the anqle y2 corresponding to the camplet movement of the tab 134, which is forced to pivot parallel to itself by the pull exerted on it by the wall 302, until it abuts under the sidewalk 324. In this position, the wall 102 has an inclination shown by the line in solid line 1.3 and which is greater than it should be.

 Secondly, the front walls 103-113 and 104-114 are removed. On Figure 7, we see that the wall 104 pivots along the line of rainaqe 108 according to the arrow F2 and travels the angle x shown between the line In dotted line and the line 1i4 in solid lines.

The edge which forms the angle of the part is now the crease line 344, while the crease line 139 lies in the plane of the transverse wall 102 which extends at the level of a free edge, each of its ends, by the distance D which separates the crease lines 138 and 144, that is to say a total of DX 2. Your tab 134 cannot come out of its housing thanks to the fact that it stops under the sidewalk 124. It also cannot be fold since it has no fold line other than lines 338 and 344. the wall 102 is then forced to return according to the arrow F3 at the angle y2 to reach its final position whose inclination is represented by line I .5 in solid lines. It will be understood that the amplitude of the angular movement of the tab 134 is established by suitably cutting off its edge 154. The greater the movement must be, the greater the raking angle must be. This angle must be at least eqa b that made between them the crease line 138 and the inclined edge 161 in the position of Figure 6. In reality, it is more the linear distances D and d measured on the free edge walls 101 and 102 on the one hand and on the outer edge 145-146-147-148 on the other hand. Isn indeed, it is necessary to lengthen the sides of the part so that it can cover the ribs of the identical part whose sides have remained in the position of their mount. The elongation must be equal, apart from the clearances, to the thicknesses of material to be compensated. In the longitudinal direction, it is necessary here to obtain an elongation equal to twice the thickness of each front wall, ie at least three thicknesses of material at each end s that of the panel 103-104, that of the panel 113-L14 and that of the tab 131 to 134 inserted between these panels or, more exactly, the width of the sidewalk 123-124. In the width direction, twice the thickness of each wall 101-102 is sufficient. TA distance D is therefore greater than distance d (Figure 7).

 The greater the thickness of the material retained, the greater the distances D and d and the greater the angle of movement y of the legs 131 to 134 will be greater.

 The position of the walls 302 and 104114 has been shown in dotted lines before they have been removed. This is the case in FIGS. 1, 2 and 5 (as well as in the lower part of FIG. 4) which represent parts intended to constitute a container body. We have shown in solid lines the position of the walls 102 and 104-114 after separation. This is the case of the upper part of FIG. 4 which represents a part intended to constitute a cover.

 We can thus clearly distinguish the difference in perimeter between the two positions9 and we see that starting from two identical parts we can cover one in normal situation by another whose walls have been moved apart.

 Figures 8 and 9 show the complete container, the cover 2 fitted on the body 1. The bottoms 100 of the two parts being water, they are exactly plumb with each other and the walls must respectively be inclined inwards (part 1 as originally fitted) and outwards (part 2 after separation) * However, the drawing exaggerates the angle of inclination because in reality the walls made of thin cardboard and their relative natural flexibility contribute to allow nesting without the walls deviating exaqerly from the perpendicular to the plane of the funds. This is verified even with corrugated cardboard called "double double" of eight millimeters thick for example.

 Figure 10, which represents the same position as that of Figure 9, illustrates a solution according to which the legs 131 to 134 are cut so that their ancillary movement is limited so that, after separation, the walls of the cover are well in * planes perpendicular to the bottom plane. In this case, the free edge of the walls of the cover theoretically cannot reach the level of the bottom of the body and gets stuck at a higher level. Here again we have exd - managed the importance of the difference in level to simplify the explanations for in reality one can easily adopt a compromise between appearance and reality which allows both perfect interlocking and an insignificant inclination of the walls.

 Referring to FIG. 11, we see a diagram illustrating two variants placed opposite to facilitate their comparison.

right, we see the embodiment that has been described with reference to Figures 1 to 10: the tab 131 has its outer edge 145 parallel to the free edge of the wall 101 and shifts by a distance e equal to the e - ferryman of the material used. Its other edge 151 is oblique and makes an angle with the edge 161 of the panel 103 ensuring the movement of the tab 331. The crease line 141 is perpendicular to the edge 1 I bre of the wall 101 and is located between Se edge 151 and the crease line 135.

 On the left, we see another variant according to which the edge 153 of the tab 133 is parallel to the crease line 106 and no longer inclines like its counterpart 151. It is offset by a distance e equal to the thickness of the material used to allow the tab 333 to be placed against the bottom 100 during assembly of the container. However, when the angular movement of the lug 133 is to be ensured when the slope is sloping, it is the edge 147 thereof which is oblique, at the angle y with respect to the extension of the free edge of the wall 102.

 In this figure, it can also be seen that the oblique groove line 137 is no longer beyond the orthogonal groove line 143 but below. The crease line 137 is therefore located between the edge 153 and the crease line 143. When mounting the part, the tab is always folded along the crease line farthest from its edge: along the line 135 for the leg 131 and along the line 143 for the leg 133. Consequently, in the first case, the part has the general shape of a trunk of a pyramid due to the inclination.

origin of line 135 which becomes its corner edge, while in the second case, the part has the shape of a parallelepiped due to the perpendicularity of line 143 which becomes its corner edge.

 In Figures 12 and 13 there is shown an embodiment according to which the side walls are higher than the front paros.

 The moles elements te those of the preceding figures carry the moles references but in the second hundred instead of the first cutesy.

 When a container of the known type is desired having walls of different heights, the invention can be applied according to the embodiment of FIGS. 1 to 10. The legs integral with the tallest walls must have the height of the walls the lower its to be able to penetrate between the panels.

 To increase the solidity of the container by taking advantage of the effect of nervuraqe of the angles, the invention provides that the legs 231, 232, 233 and 234 are as high as the walls 201 and 202 which carry them. Here, we have the case where these legs are as high as the walls 201 and 202, including in their part between the crease lines 235 to 238 on the one hand, 241 to 244 on the other hand.

When the walls 20L and 202 are extended to the lines 241 to 244, their upper edge is then continuous from one end to the other.

 From the soset of the rain lines 241 to 244, the legs 231 to 234 have an oblique edge 271-272-273-274 which lowers to plumb with the end of the sidewalk 223-224, which creates a part 231a-232a-233a-234a which remains outside the walls 203-213, 204-214, only when the legs 231 to 234 are in the retracted position. These parts 231a b 234a constitute <"n some abortions a fraction of the front walls.

 The operation of these elements will not be described in detail because it is identical to that of the previous embodiment, the internal part of the legs 231 to 234 being conch sewn indicates above and abutting either on the bottom 200 or under the sidewalk 223-224 depending on whether the walls 201 and 202 are in their original position or are separated.

 The existence of the oblique edge 271-272-273-274 could allow excessive penetration of the legs 231-232-233-234, despite the rib abutment effect 251-252-253-254 on the bottom 200. To avoid this inconvenience, provision is made for a recess between the oblique edge 271-272-273-274 and the edge itself 245-246-247-248 of the legs 231-232233-234. This recess comprises an edge 275-276-277- 278 (only the edge 278 is visible in the drawing, FIGS. 12 and 13) which is in a plane substantially perpendicular to that of the bottom 200 so as to be applied perfectly against the edge 224a of the sidewalk 224 when the tab 234 is fully depressed , which is the case on Figure 12. The edge 278 therefore abuts against the edge 224a at the same time as the side 25+ on the bottom 100. This considerably increases the capacity for resistance to the sinking of the legs in the event of forces exerted on the side walls 203 and 202, for example.

 the panels 203 and 204 could have oblique sides extending from the corners of the bottom 200 to the ends of the roof trot 223-224, as evoked by the line 1.5 in dotted lines. But experience has shown that either of the fitting of the lid on the body, these sides tend to abut one against the other and to qe ner the closure of the container.

 To avoid this drawback, provision is made for a notch in these ribs. Tci, this notch has been produced along two converging lines 280 and 281. the sides of the body and of the cover which are face to face are thus moved away so that the cover can be fitted without hindrance.

 If the invention is applied to the production of containers having no longer double front walls put simple, guides can be provided for the angular movement of the legs and a stop must be provided for these legs in order to ensure the integrity of the part forming the cover when its walls are apart.

Claims (8)

RVENDICATI0NS  1- Polygonal container made of cardboard or similar material, of the type comprising a body and a styling cover which must be fitted into a bell on the body, characterized in that the body and the cover consist of two copies (1 and 2) of the same part which has a bottom (100-200), walls (101 to 104, 201 to 204) erected relative to said bottom (100-200) and adjacent to each other, as well as legs (131 to 134, 231 b 23) which are integral with the ends of certain walls (101 and 102, 201 and 202), which are each folded parallel to the plane of the adjacent wall (103-104, 203-204) and which are mounted movable relative to said wall (103-104,  203-204) in order to have the possibility of an angular movement corresponding to different inclinations of the wall (101-102, 201-202) which carries them relative to the bottom (100-200), each leg (131 a 134, 231 to 234) being lacquered with two creasing lees (135 and 141, 136 and 142, 137 and 143, 138 and 144 - 235 and 241, 236 and 242, 237 and 243, 238 and 244> which converge towards the corner falot by the bottom (100-200), the leg (131 134, 231 to 234) and the wall (101-102, 201-202) which carries the leg.  2- Container according to claim 1, characterized in that a stop (123-124, 223-224) is provided to limit the angular movement of each leg (131 å 134, 231 a 234).  3- Container according to claim I, characterized in that each wall (103-104, 203-204) adjacent to a wall (101-102, 201202) carrying tabs (131 to 134, 231 to 234) is double, at less on part of its surface, that is to say that it ocoprend an outer panel (103-104, 203-204) integral with the bottom (100-200) and straightened, an inner panel (113-114, 213 -214) integral with the previous one, fold down towards the bottom (100-200) and maintained in this situation, an intermediate part (123-124, 223-224) constituting a narrow sidewalk parallel to the bottom (100-200 ) preferably being provided between these two panels (103 and 113, 104 and 114, 203 and 213, 204 and 214) so that they are face to face set apart by a distance which depends on the width of said sidewalk ( 123-124, 223-224).  4 container according to claim 3, characterized in that the legs (131 h 134, 231 to 234) are placed between the two panels (103 and 113, 104 and 114, 203 and 213, 204 and 214) above the bottom (100 -200), below the sidewalk (123-124, 223-224), and in that the ribs (145 and 151, 146 and 152, 147 and 153, 148 and 154) of each leg (131 to 134) are not parallel so that the tab (131 to 134) has a fury peznttant him an angular movement limited by abutment of said sides (145 and 151, 146 and 152, 147 and 153, 149 and 154 -245 and 251, 246 and 252, 247 and 253, 248 and 254) respectively on the bottom (100-200) and under the sidewalk (123-124,  223-224).  5- Container according to claim 1, characterized in that the edges (160 and 161, 162 and 163) of the walls (103 and 104) adjacent to those (101 and 102) which carry the legs (131 å 134) are oblique.  6- Container according to claim 1, characterized in that the walls (201 and 202) which carry the legs (231 to 234) are higher than the adjacent walls (203-213 and 204214), which have an edge (206- 208) adjacent to the bottom (200) as long as it and a shorter opposite edge (223-224), each leg (231 to 234) having optionally an oblique side (271 to 274) which extends from either of the wall (201-202) which carries it up to plumb with the shortest edge (223-224) of said adjacent walls (203-213 and 204-214).  7- A container according to claim 6, characterized in that the edges which connect the edge (206-208) adjacent to the bottom (200) to the opposite edge (223-224) have a notch (280-281).  8- container according to claim 6, characterized in that the oblique edge (271 to 274) of each tab (231 to 234) has a more sloping segment (275-276-277-278), substantially perpendicular to the edge La shorter (223-224) of the adjacent wall (203-213, 204-214).