WO1984000483A1 - Method allowing to obtain a cupboard or the like from rigid sheet material, blanks prepared for implementing such method and products obtained thereby - Google Patents

Abstract

The invention relates to the manufacture of furniture by bending cardboard or comparable materials. The aim of the invention is to obtain a cupboard, dresser or piece of furniture of the same kind from a small number, for example two, of precut blanks provided with folding lines. The blanks may be transported in a flat position and assembled on site, the piece of furniture being then dismountable so as to transport it again to another place. A first blank is used to obtain the front face (1), the sides (10), the bottom (2) and the front part (6) of the upper face. A second blank is interconnected in the first blank to form the back face and the remaining part (22) of the upper face. Notches insertable into each other provide for the rigidity of the assembly.

Description

 "Method for obtaining a cabinet or the like from rigid sheet material, blanks prepared for the implementation of this method and products obtained" The present invention relates to a process for obtaining a cabinet from a sheet of rigid material.

The process was developed for the construction of a doll's wardrobe from a sheet of cardboard, but it also applies to the construction of a wardrobe for children or adults, using ¬ health of materials of suitable mechanical resistance.

For a number of years, a great development has been observed in the technique of making packaging from a sheet, or blank of cardboard or the like, which undergoes in the factory a preparation consisting essentially of a décou¬ page and a confection of fold lines, then are sent flat to the place of use, where they are folded and possibly glued to obtain the desired packaging. This allows significant savings on the transport costs of empty packaging, as well as a reduction in the number of these packaging which are damaged before use. Such processes have also been proposed in the field of furniture. Mention may be made, for example, of the French patents published under the number 2.424.006 and under the number 2.440.709, relating to removable seats. However, the problems relating to seats do not allow the mounting systems to be transposed from one type of furniture to another.

There is therefore a need for a method of obtaining a cabinet from a sheet of rigid material, which allows the flat transport of the constructive elements, the easy assembly of the cabinet, its demon-

WIPO easy to store for a new flat transport followed by a new reassembly.

The object of the invention is to provide such a method, which also makes it possible to obtain a coat of arms from a single sheet of material, cut into a small number of unitary assemblies, two for example full.

It should be noted here that the word "cupboard" also in the globe, in this text, all furniture such as "sideboards, sideboards, etc." which have a bottom, a top and four vertical walls, and which are open on at least one of their vertical walls.

The present invention therefore provides a method which comprises the following steps: a) preparing a first blank comprising:

- A first central part of rectangular general shape;

- a first lower flap connected to the central part along one of the edges of said central part by a first fold line;

- a second lower flap connected to the first lower flap by a second fold line parallel to the first;

- a first upper flap connected to the central part by a third fold line on the opposite edge of said central part;

- a second upper flap connected to the first flap by a fourth fold line parallel to the third; - two first side flaps each connected to one of the free sides of the central panel by a fifth folding line;

- two second lateral flaps each connected to a first lateral flap for a sixth fold line parallel to the fifth;

- deux troisièmes rabats latéraux reliés cha¬ cun à un second rabat latéral par une septième ligne de pliage parallèle à la sixième;Where?

- two third lateral flaps connected each to a second lateral flap by a seventh fold line parallel to the sixth;

- two first notches provided on the extreme edge of the second lower flap, these two notches being at a distance from the axis of the central part which is equal to that which separates the fifth fold line from the same axis, reduced the distance between the sixth and seventh fold lines; - two second notches provided on the extreme edge of the second upper flap, and located at the same distance from the axis as the first notches;

- Two third notches provided on the lower side of the third lateral flap, at a distance from the seventh fold line equal to the distance between the fifth and sixth fold lines reduced by the distance between the first and second fold lines;

- two fourth notches provided on the upper side of the third lateral flap at a distance from the seventh fold line equal to the distance between the fifth and sixth fold lines minus the distance between the third and fourth fold lines; - an opening which can be provided with a door and situated in the central part of the central part; b) prepare a second blank comprising:

a second rectangular central part, the half-width of which is at least equal to the half-width of the central part of the first blank reduced by the distance between two fifth and sixth adjacent fold lines and of height at least equal to the height of the central part of the first blank minus the distance between the second fold line and the edge ex-

... . 4.

... 4.

trême of the second lower flap;

- a first upper flap of the second blank connected to the second central part for an eighth fold line; a second upper flap of the second blank connected to the first upper flap of the second blank by a ninth fold line, the sum of the distances between the third and fourth fold lines and between the eighth and ninth fold lines being at most equal to the distance between the fifth and sixth folding lines;

- Two fifth notches provided on the extreme edge of the first upper flap of the second blank, arranged symmetrically with respect to the axis of the second central part and spaced from the latter by a distance equal to that which separates the second notches of the axis; c) proceed to the mounting of the first blank by folding in the same direction the lateral flaps each time by 90 ° around each of their fold lines, then by likewise folding the lower and upper flaps, the first notches coming s 'insert in the third notches and the second notches in the fourth notches; d) proceed with mounting the second blank by folding the upper flaps of the said second blank in the same way, the fifth notches also being inserted in the fourth notches which are provided with a width double of the others notches.

The invention will be explained in more detail with the aid of a practical embodiment illustrated by the drawings, among which:

Fig. 1 is a half plan view of the first blank before folding.

Fig. 2 is a half plan view of the second blank before folding.

O-vd Fig. 3 is a perspective view of the assembled piece of furniture, showing its underside and its front face. Fig. 4 is a view similar to FIG. 3, showing the rear face of the cabinet. Figure 1 shows half of the first blank.

Indeed, the latter being symmetrical on the whole with respect to an axis, it is not necessary to represent it entirely. The parts corresponding to the top of the cabinet in the position of use, and which are called, for example "upper flaps" are at the top in FIG. 1.

The first blank includes:

- A first central part 1 of general rectangular shape; - a first lower flap 2 connected to the central part along one of the edges of said central part by a first fold line 3;

- A second inner flap 4 connected to a first lower flap by a second fold line 5 parallel to the first;

- A first, upper flap 6 connected to the central part by a third fold line 7 on the opposite edge of said central part;

- a second upper flap 8 connected to the first flap by a fourth fold line 9 parallel to the third;

- Two first side flaps 10 each connected to one of the free sides of the central panel by a fifth fold line 11; - two second lateral flaps 12 connected each to a first lateral flap by a sixth fold line 13 parallel to the fifth;

- Two third lateral flaps 14 each connected to a second lateral flap by a seventh fold line 15 parallel to the sixth; - Two first notches 16 provided on the extreme edge of the second lower flap 4, these two notches being at a distance ^ .1 from the axis of the central part which is equal to that JL2 which separates the fifth line from folding 11 of the same axis, reduced by the distance L3 which separates the sixth 13 and seventh 15 fold lines;

- Two second notches 17 provided on the extreme edge of the second upper flap 8, and located at the same distance _11 from the axis as the first notches;

- two third notches 18 provided on the lower side of the third lateral flap, at a distance from the seventh fold line 15 equal to the distance T.4 between the fifth 11 and sixth 13 fold lines reduced by the distance 3.5 between the first 3 and second fold lines;

- two fourth notches 19 provided on the upper side of the third lateral flap at a distance _16 from the seventh fold line equal to the distance _14 between the fifth and sixth fold lines reduced by the distance Ï between the third and fourth fold lines;

- An opening 20 which can be provided with a door and located in the central part of the central part (1).

As can be seen in FIG. 1, the distances JL4 and JL5 are equal, so that the notch 18 ′ is adjacent to the seventh fold line 15.

The opening 20 is the only non-symmetrical element of the first blank, in the example described. Indeed, the central part (1) of the blank is cut along a line which follows the lower and upper sides of a rectangle, and only one of the lateral sides, a fold line intended to operate in the opposite direction to the other lines of folding mentioned above, constitutes the other

VTFO côté latéral du rectangle. On comprend que cette décou¬ pe délimite une porte qui peut pivoter autour de la li¬ gne de pliage.WIPO

VTFO lateral side of the rectangle. It is understood that this décou¬ pe delimits a door which can pivot around the folding line.

It will be noted in the figure that the central part 1 comprises, at its lower angles, a triangular extension 31 limited by the fifth fold line 11 and by an incisionoblique 32 which connects the end of the first fold line 3 to the edges blank. The lower edge of the fifth flap 10 is parallel to the fold line 3 but is shifted downward relative to it of a length corresponding to that of the tri¬ angle 31. The lower edge of the sixth flap 12 is o- block, so that the lower edge of the seventh flap 14 is an extension of the first fold line 3.

On the other hand the central part 1 has, at its upper corners a triangular extension 33 limited by the third fold line 7 and by an oblique in¬ cision 34 which connects the end of the fifth fold line 11 to the edge of the blank . The lateral edge of the third flap 6 is parallel to the fifth fold line 11 but is further apart from the axis by a length corresponding to that of the triangle 33. The lateral edge of the fourth flap 8 has a first oblique part 35 which is contiguous to the fourth fold line 9, and which makes with this fold line an angle equal to that made by the incision 34 with the third fold line 7, but in the opposite direction.

In connection with the presence of the triangle 33, a first additional notch 36 is provided on the upper edge of the fifth flap 10 and a second additional notch 37 is provided on the upper edge of the fourth flap 8. The distance JL8 from the first notch additional 36 to the fifth fold line 11 is equal to the distance 17 between the third and

_ WIPO

Λ, WIPO fourth fold lines. As the notch 19 ₃ the cheek 36 is of sufficient width to receive two thicknesses of the cardboard from which the blanks are made.

Two other additional notches 38, 39 5 are provided on the upper edge of the blank, they are adjacent to the sixth and seventh fold lines 13 and 15.

In the lower part of the sixth and seventh flaps 12 and 14 is provided a horizontal notch 10 pillowcase 40, which does not open to the outside. This size starts from the sixth fold line 13, crosses the seventh fold line 15 and stops in the seventh flap before reaching its outer edge.

In the fourth flap 8, an opening 41, 15 elongated in the horizontal direction is also provided.

We will now describe the second blank.

This includes:

- A second central part 21 rectangular, whose half width ^ 9 is at least equal to the de-

20 mi width 12 of the central part 1 of the first blank - minus the distance j.3 between two fifth and si¬ xth adjacent fold lines and of height at least equal to the height of the central part of the first blank minus of the distance _1 10 between the second

25 fold line and the extreme edge of the second lower flap;

- A first upper flap of the second blank 22 connected to the second central part by an eighth fold line 23;

30. - a second upper flap of the second blank 24 connected to the first upper flap of the second blank by a ninth line 25 the sum of the distances 17, jLll between the third and fourth fold lines and between the eighth and ninth fold lines being at more equal

35 le at distance 14 between the fifth and sixth lines

ζ JRË; WIPO

V / IPO folding genes,

- Two fifth notches 26 provided on the extreme edge of the first upper flap of the second blank, arranged symmetrically with respect to the axis of the secon- of the central part and spaced from the latter by a distance 3.1 equal to that which separates the second notches 17 from the axis.

It will be observed in the figure that the width 3.9 is in fact exactly equal to the difference (3.2-3.3). The second blank further comprises a lower flap 51, connected to the central part 21 by a tenth fold line 52. The height of the central part 21, that is to say the distance 112 between the eighth 23 and tenth 52 fold lines is equal to the distance between the upper edge of the seventh and eighth flap 12, 14 and the notch 40.

The shape of the second upper flap of the second blank 24 is identical to that of the fourth flap 8, these two flaps are superimposable. The flap 24 therefore has an additional notch 53 which corresponds to the additional notch 37, an oblique edge 54 which corresponds to the oblique edge 35, and an opening 55 which corresponds to the opening 41.

The central part 21 of the second blank has an extension 56 in the shape of a trapezoid, limited by the eighth fold line 23 and by a broken line which comprises an oblique part 57 which starts from the end of the fold line 23 and is made with the same angle as the incision line 34 with the third fold line 7, and a portion 58 parallel to the fold line 23. In this line are provided two notches 59, 60, the first of which is placed on the along the lateral edge of the central part 21, the second of which is separated from the first by a distance 3.3 equal to that which separates the sixth and seventh fold lines 13 and 15. These notches stop before reaching the folding line 23.

The lower flap of the second blank 51 is wider than the central part 21. Its half-width is equal to the half-width 3.2 of the central part 1 of the first blank, and it has, on its lower edge, u- not notch 61 which is spaced from the lateral edge of said ra¬ bat by a distance 13 equal to that which separates the si¬ xith and seventh fold lines. Towards the middle of the central part 21 is a horizontal fold line 62 which is located on a face opposite to that which carries the fold lines 23, 25 and 52. The position of this line 62 is not critical , provided that it is further apart from the eighth fold line 23 than the bottom of the notches 59, 60, and preferably than their mouth, and spaced from the tenth fold line 52 by a greater distance to that of the lower flap 51. However, it is preferable, for better sealing of the rear face of the cabinet, to provide this line 62 towards the middle of the height of the central part 21.

We will now describe the assembly of the cabinet: We first proceed to the assembly of the first blank by bending in the same direction the side flaps every 90 ° times around each of their fold lines, then by likewise folding the flaps in erieur and superior, the first notches 16 coming to be inserted in the third notches 18 and the second notches 17 in the fourth notches 19.

In addition, the second additional notches 37 are inserted into the first additional notches 36, which has the effect of keeping the seventh flap 14 in a position parallel to the cin-

OMP quième flat 10. The front face, the sides and the bottom of the cabinet are thus produced, as well as part of the upper face.

Next, the second blank 5 is assembled by folding the upper flaps 22, 24 of the second blank in the same way, the fifth notches 26 also being inserted in the fourth notches 19 which are provided with a width double the other notches. . In addition, the additional notches 53 10 come, like the additional notches 37, to be inserted in the additional notches 36 corresponding.

The lower flap 51 is folded back to the horizon, and the notch 61 is inserted into the notch 1540 and constitutes a shelf board, the insertion of the flap 51 is made possible by the flexibility that procu¬ re the existence of the fold line 61.

The two notches 59 and 60 are inserted respectively in the notches 39 and 38. 0 The flaps 8 and 24 come in superposition, and the openings 41 and 55 being in coincidence constitute a single opening in which it is possi¬ ble to hang, for example, coat racks.

Figures 3 and 4 show the general appearance 5 of the assembled furniture. It can be seen that the feet are consti¬ killed by the lower edges of the flaps 10 and by the triangles 31, located at the bottom of the central part 1. The edges of the flaps 10 can be scalloped if desired. 0 It is also noted that the rear part of the cabinet is formed by the assembly of the flap 4 of the two flaps 12 and of the central part 21 of the second blank.

The upper face of the cabinet is constituted by the flaps 6 and 22, juxtaposed, it is wider as the body of the cabinet, the connection being made by the oblique lines 32, 35, 57 and 54 providing an advantageous aesthetic effect.

To facilitate disassembly, there is provided between the extreme edge of the flap 4 and the fold line 52 a small interval allowing the insertion of the hand in order to remove the flap 51. This interval may not affect the entire width of the flap 4 .

The cabinet which has just been described can be made of corrugated cardboard cut by laser if it is a child's toy. In the case of an adult wardrobe, they will obviously be made of an appropriate material: plastic material in sheets, plywood or metal sheet provided with joints or hinges at the fold lines, etc.

Claims

CLAIMS 1. Method for obtaining a cabinet from rigid sheet material, characterized in that it comprises the following steps: a) preparing a first blank comprising: a first central portion of rectangular general shape (1), - a first lower flap (2) connected to the central part along one of the edges of said central part by a first fold line (3), a second lower flap (4) connected to a first lower flap by a second fold line (5) parallel to the first, - a first upper flap (6) connected to the central part by a third fold line (7) _ .. on the opposite edge of said central part, - A second upper flap (8) connected to the first flap by a fourth fold line (9) parallel to the third, - two first side flaps (10) connected. each to one of the free sides of the central panel by a fifth fold line (11), - two second lateral flaps (12) each connected to a first lateral flap by a sixth fold line (13) parallel to the fifth, - two third lateral flaps (14) connected, each to a second lateral flap by a seventh fold line (15) parallel to the sixth, - two first notches (16) provided on the extreme edge of the second lower flap (4), these two notches being at a distance (.11) from the axis of the central part which is equal to that (JL2) which separates the fifth fold line (11) of the same axis, minus the distance ( _, 13) which separates the sixth (13) and seventh (15) fold line,

- two second notches (17) provided on the extreme edge of the second upper flap (8), and located at the same distance 1.1 from the axis as the first notches, - two third notches (18) provided on the lower side from the third lateral flap, at a distance from the seventh fold line (15) equal to the distance ÇL4) between the fifth (11) and sixth (13) fold lines reduced by the distance (_15) between the first ( 3) and second (5) fold lines, - two fourth notches (19) provided on the upper side of the third lateral flap at a distance ÇL6) from the seventh fold line equal to the distance ÇL4) between the fifth and sixth fold lines reduced by the distance (J. 7) between the third and fourth fold lines, - An opening (20) which can be provided with a door and located in the central part of the central part (1); b) prepare a second blank comprising: - a second central part (21) rectangular, the half-width (^ 9) of which is at least equal to the half-width (1.2) of the central part (1) of the first blank minus the distance ( ^ 3) between two fifth and sixth adjacent fold lines and a height approximately equal to the height of the central part of the first blank minus the distance (110) between the second fold line and the extreme edge of the second lower flap, - a first upper flap of the second blank (22) connected to the second central part by an eighth fold line (23), - a second upper flap of the second blank (24) connected to the first upper flap of the second blank by a ninth fold line (25), the sum of the distan- WIPO? Ï-f.≈∞SNT ^{WI O} these (3.7-3.11) between the third and fourth fold lines and between the eighth and ninth fold lines being at most equal to the distance (JL4) between the fifth and sixth fold lines, - two fifth notches (26 ) provided on the extreme edge of the first upper flap of the second blank, arranged symmetrically with respect to the axis of the second central part and spaced therefrom by a distance (jLl) equal to that which separates the seconds notches (17) of the axis; c) proceed to the assembly of the first blank by folding in the same direction the lateral flaps each time by 90 ° around each of their fold lines, then by likewise folding the lower and upper flaps, the first notches (16 ) coming to be inserted in the third notches (18) and the second notches (17) in the fourth notches (19); d) proceed with mounting the second blank by folding the upper flaps in the same way (22, 24): <_ î_di & second blank, the fifth notches (26) coming also to be inserted in the fourth notches (19) which are double the width of the other slots. 2. Method according to claim 1, characterized in that the distance (JL4) between the fifth and sixth fold lines (11,13) is equal to the distance (JL5) between the first and second fold lines, if although the third notches (18) are adjacent to the seventh fold line (15). 3. Method according to one of claims 1 or 2, characterized in that the central part (1) of the blank is cut along a line which follows the lower and upper sides of a rectangle, and only one of the lateral sides, a folding line intended to operate in the opposite direction to the other folding lines mentioned WIPO above, constitutes the other lateral side of the rectangle, so that this cutout delimits a door which can pivot around the fold line. 4. Method according to one of claims 1 to 3, characterized in that the central part 1 comprises, at its lower angles, a triangular extension (31) limited by the fifth fold line (11) and by an oblique incision ( 32) which connects the end of the first fold line (3) to the edge of the blank, in that the lower edge of the fifth flap (10) is parallel to the fold line (3) but is shifted towards the low relative to it of a length corresponding to that of the triangle (31) and in that the lower edge of the sixth flap (12) is oblique, so that the lower edge of the seventh flap 14) is in prolongation of the first fold line (3), so that after mounting the feet are formed by the lower edges of the flaps (10) and by the triangles (31), killed above the part central (1). 5. Method according to claim 4, caracté¬ ized in that the edges of the flaps (10) are notched. 6. Method according to one of claims 1 to 5, characterized in that the central part (1) comprises, at its upper corners, a triangular extension (33) limited by the third fold line (7) and by an oblique incision (34) which connects the end of the fifth fold line (11) to the edge of the blank. The lateral edge of the third flap (6) is parallel to the fifth fold line (11) but is further apart from the axis by a length corresponding to that of the triangle (33). The lateral edge of the fourth flap (8) has a first oblique part (35) which is contiguous with the fourth fold line (9), and which makes with this fold line an angle equal to that which makes the incision (34) with the third fold line (7), but in opposite direction, in that a first additional notch (36) is provided on the upper edge of the fifth flap (10) and a second additional notch (37) is provided on the upper edge of the fourth flap (8) , in that the distance (JL8) from the first additional notch (36) to the fifth fold line (11) is equal to the distance (3/7) between the third and fourth fold lines, in that the notch (19), the en¬ notch (36) is of sufficient width to receive two thicknesses of the material from which the blanks are made, and in that the second additional notches (37) come insert into the first additional notches (36), which has the effect of keeping the seventh flap (14) in a position parallel to the fifth flap (10). 7. Method according to claim 6, caracté¬ ized in that in the lower part of the sixth and seventh flaps (12) and (14) is provided a notched ho¬ notch (40), which does not open to the outside, in that this cut starts from the sixth fold line (13), crosses the seventh fold line (15) and stops in the seventh flap before reaching its outer edge, in that the second blank comprises in addition to a lower flap (51) connected to the central part (21) by a tenth fold line (52) in that the height of the central part (2_Ç, that is to say the distance (3.12) between the eighth (23) and tenth (52) folding lines is equal to the distance between the upper edge of the seventh and eighth flaps (12, 14) and the notch (40), and in that during assembly the lower flap (51) is folded horizontally, and the notch (61) is inserted into the notch (40) and constitutes a shelf re. 8. Method according to claim 7, characterized in that it is provided in the central part (21) WIPO - from the second blank, a horizontal fold line (42) which is further apart from the eighth fold line (23) than the bottom of the notches (59, 60) and preferably than their mouth, and departs from the tenth fold line. ge (52) from a distance greater than that of the flap. 9. Method according to one of claims 1 to 8, characterized in that in the first blank two other additional notches (38, 39) are provided on the upper edge of the blank, which are adjacent to the sixth and seventh fold lines (13) and (15), in that the central part (21) of the second blank has a trapezoid-shaped extension (56), limited by the hui¬ th fold line (23) and by a broken line which comprises an oblique part (57) which starts from the end of the fold line (23) and makes with it the same angle as the incision line (34) with the third fold line (7), and a part ( 58) parallel to the fold line (23). In this line are provided two notches (59, 60), the first of which is placed along the lateral edge of the central part (21), and the second of which is spaced from the first by a distance 3.3 equal to that which separates the sixth and seventh folding lines (13, 15) and in that these notches ar- f - * r> in. that during assembly to facilitate disassembly, there is provided between the extreme edge of the flap (4) and the fold line (52) a small gap allowing the insertion of the hand in order to remove the flap (51), in that this in¬ tervalle may not affect the entire width of the flap (4). 10. Method according to one of claims 1 to 9, characterized in that in the fourth flap (8), an opening (41), elongated in the horizontal direction is also provided, in that the shape of the second upper flap of the second blank (24) is identical to that from the qua- WIPO third flap (8), these two flaps are superimposable, said flap (24) therefore comprising an opening (55) which corresponds to the opening (41), and in that, during assembly the flaps (8) and (24 ) come in superposition, and the openings (41, 55) being in coincidence constitute a single opening in which it is possible to hang, for example, coat racks. 11. Set of two blanks cut out and provided with fold lines, this set being intended for carrying out the method according to one of claims 1 to 10. 12. Cabinet obtained by the method according to one of claims 1 to 10. WIPO IfO