FR2657591A1 - Household tub made of synthetic material - Google Patents

Abstract

Household tub comprising a lower part and a lid, horizontal and vertical reinforcing ribs on the external side of the lower part and the lid being connected to the lower part by a hinge, characterised in that the hinge (10) is constituted by two heels (16, 17) constituted on a longitudinal edge (11) of the lid (3), that is to say, its lower edge (15), which engage in two housings (18, 19) in the form of slots formed in a horizontal reinforcing rib (4) of the lower part (2) and are locked in such a way that they cannot be withdrawn by locking means (20, 21), and in that two downward pointing lugs (23, 23) comprising releasable engagement means (24) are constituted on the opposite longitudinal edge (12) of the lid (3), these means penetrating in engagement slots (25, 26) constituted in the reinforcing rib (4) on the side of the lower part (2) which is opposite the housings (18, 19) in the form of slots.

Description

1 - Plastic household container The invention relates to a household container

  plastic household comprising a box-shaped lower part and a cover mounted thereon, horizontal and vertical reinforcing ribs being provided on the external side of the lower part and the cover being connected to the lower part by a hinge . Household bins of this type are generally known, and

  are used to store the most diverse objects.

  Basically, there are two types of household bins of this type, namely on the one hand the type in which the cover does not include any permanent connection with the lower part and on the other hand the type in which the cover is connected to the lower part by hinges. In household bins in which the lid associated with them is linked in a captive manner to the lower part, the hinges usually consist of hinge-shaped elements held by the rods forming the pivot axes of the hinge In certain cases , these rods are formed in the manner of buttons on the hinge also made of synthetic material, and it follows that the resistance of this hinge is relatively poor In other cases, the rod is formed by a metal rod introduced into bores correspondents of the two parts of the hinge, which makes the manufacture of household bins of this type -2-

relatively expensive.

  Starting from a household bin of the type mentioned in the preamble, the invention therefore aims to provide a household bin of this type which can be manufactured in the simplest possible manner while being however resistant and functional, and which is characterized by the fact

  that it can be very easily handled.

  According to the invention, this object is achieved by the fact that the hinge is constituted by two heels formed on a longitudinal edge of the cover, that is its lower edge, which engage in two slots-shaped housings formed in a horizontal reinforcing rib from the lower part and are locked in such a way that they cannot be removed by locking means, and in that two legs directed downwards and comprising releasable latching means are formed on the opposite longitudinal edge of the cover, means which penetrate into engagement slots formed in the reinforcing rib on the side of the lower part which is opposite to the slot-shaped housings. Thanks to the invention, the manufacture of a cleaning container of this type is greatly simplified by the fact that it is made up of two parts which can be produced for admissible molding costs, and which include all the elements nts functional hinges and additional closings The closings and also the hinges are in

besides very stable.

  More specifically, the invention can be improved by ensuring that the cover is provided with a peripheral side wall and directed downwards, provided on its free lower edge with a reinforcing element, and that the legs and heels are formed on the reinforcing element Thanks to this measure, we improve

stability and resistance.

  It is possible to achieve a preferred embodiment according to the invention by ensuring that the upper horizontal reinforcing rib containing the housings and the engagement slots is disposed at a certain distance from the upper edge of the lower part which is slightly smaller than the height of the side wall of the cover As a result, the rib of -3 - upper reinforcement simultaneously constitutes the support for the cover and the lever arms necessary for closing and the hinges become significantly shorter, which further improves

  the higher the strength and stability of these connecting elements.

  More specifically, the invention can be improved by ensuring that the horizontal upper reinforcing rib is formed in the form of a grip rod in the region of the side walls of the lower part. The result thus obtained is that without additional measures, the horizontal reinforcement rib which is in any case ensures better maneuverability of the

household bin.

  Furthermore, it is preferable that there is provided in parallel and at a certain distance below the upper horizontal reinforcement rib another horizontal reinforcement rib of smaller width, that this other reinforcement rib is placed on the two longitudinal walls. of the lower part and extends partly over the respective front walls, and the free ends of the other reinforcement rib are connected to the upper horizontal reinforcement rib by connecting ribs oriented obliquely upward, forming a recessed handle. According to a particularly advantageous embodiment of the invention, it is proposed that the upper reinforcing rib be reinforced in cross section in the region of the housings and of the engagement slots. This prevents these regions from being subjected to excessive stresses. and we also obtain this result that this horizontal reinforcing rib does not have to be produced in excessively large dimensions in the remaining region, for

  reasons for saving materials.

  The housings and the interlocking slots preferably have an identical shape and it is considered particularly advantageous that the housings and the interlocking slots are formed in the form of rectangular openings in the upper reinforcing rib, the c 8 long tee. being parallel to the respective longitudinal wall of the lower part. This result is thus obtained on the one hand that when assembling the cleaning container it is not necessary to take care of the orientation of the cover with respect to the lower part of the fact that the openings of the upper reinforcement rib are identical on the two longitudinal c 8 tees of the lower part and can therefore be used as desired for the snap-fastening of the hinges while one is also assured, without having to use too large dimensions, of a surface

  sufficient support for hinges and closures.

  According to a preferred embodiment of the invention, the locking means are formed on the heels in the form of interlocking projections directed outwards on the free ends of

these heels.

  It is also advantageous for the heels to have in the region of their upper end a region with a thinner wall forming the point of rotation of the hinge due to the elasticity.

synthetic material.

  According to a particularly preferred embodiment of the invention, and as a variant of the above embodiment, it is provided that the heels are formed at their free ends in the form of hooks facing outwards, and that the means of lock are formed at the ends of the hooks in the form of

lateral projections.

  Preferably, these projections are provided with an insertion bevel so that they can be easily introduced into the housings.

  formed by rectangular openings.

  In this embodiment, it can also advantageously be provided that the projections are provided with abutment surfaces limiting the

  pivoting movement of the cover.

  According to a particularly preferred development of the invention with a view to its practical realization, it is provided that the heels are formed at their free ends in the form of round hooks facing outwards and that the locking means are constituted by a section of the round hooks forming a curvature of 1800 Despite its constitution in a simple form, an embodiment of the hinge is thus produced, the operation of which is -5 -

particularly sar.

  More specifically, it is preferred in this case that the curvature of the

  round hooks is approximately 330.

  It is also advantageous for each of the heels to be formed in the form of a pair of round hooks separated from each other by an intermediate space. This therefore reduces friction without degrading the

hinge stability.

  It is also advantageous for a branch limiting the outward housings to be surrounded by round hooks, this branch having in a particularly preferred embodiment a substantially square section with rounded corners towards the side

  external of the horizontal reinforcement rib.

  According to an advantageous improvement of the invention, there is provided on the internal edge of the branch which is turned towards the housings a

  bearing surface which limits the pivoting movement of the cover.

  It is also advantageous in this case that the free edge of the round hooks facing their internal side is provided with an insertion bevel. This facilitates the meeting between the cover and the

lower part.

  To this end, it is further advantageous that opposite interlocking projections are formed on the heels of the insertion bevels. It is further preferred that a region of the internal surface which is situated opposite the opening of the round hook is formed in a spherical or rounded form. This further reduces friction and simultaneously compensates for the possible manufacturing tolerances. . The invention can be further improved by ensuring that the latching means are formed in the form of latching surfaces arranged perpendicularly to the legs and

also in terms of these legs.

  Preferably, the interlocking surfaces are connected to

  introduction bevels directed towards the free ends of the legs.

  The result is that the lid of the cleaning container can be easily closed by passing the tabs through the latching slots and 6 by then latching the latching surfaces on the side.

  lower of the upper horizontal reinforcement rib.

  According to an advantageous improvement of the invention, the lower part comprising the cover has staggered dimensions, the lengths and widths of which are such that two respective lower parts of the next smaller dimension can be received on a cover of the respective size more great that follows. It is then advantageous if the lower part and the cover have dimensions staggered according to the standards DIN A 4, DIN A 5, DIN

A 6 and DIN A 7.

  According to another advantageous detail of the invention, it is provided that support feet are formed on the lower side of the bottom of the lower part, these feet being preferably connected by

  rods parallel to the sides of the lower part.

  It is therefore particularly advantageous for the cover to be provided on its upper side with profiling corresponding on the one hand to the shape constituted by the support feet and the rods of a household bin of the same size, and simultaneously with the shape formed by the feet and the rods of two household bins having the dimension

  next smallest, so as to prevent them from decentering.

  The invention will now be explained in more detail by means of embodiments shown by way of examples in the drawings in which: FIG. 1 is a front view and partly in section of a household container according to the invention; Figure 2 is a plan view of the cleaning container of Figure 1, the cover has been removed; FIG. 3 represents household bins of staggered and different dimensions, showing on the left side of this FIG. 3 half of the front part and on the right side half of the side; Figure 4 is a top view of the cover of the cleaning container of Figure 1; Figure 5 is a partial front view of the cover in the region of a hinge; 7- Figure 6 a front view of the cover on the side of the tabs forming the closure; Figure 7 is a partial sectional view of a partial region of the cover which shows a heel forming an element of the hinge according to a first embodiment; Figure 8 is a partial sectional view corresponding to Figure 7 on the side opposite the cover, which shows a first embodiment of the tabs forming the closure; Figure 9 is a partial sectional view corresponding to Figure 7 of a second embodiment; Figure 10 is a partial sectional view corresponding to Figure 8 of a second embodiment; Figure It is a view with partial cutaway of a household container without cover, by a front side; Figure 12 is a perspective representation of a tab forming the closure corresponding to the embodiment of the figure; Figure 13 is a perspective representation of an element of the heel forming the hinges of the embodiment of Figure 9; Figure 14 is a partial sectional view corresponding to Figure 7 or Figure 8 of another embodiment, on an enlarged scale of about 5 times; Figure 15 is a view in the direction of arrow XV of Figure 14; Figure 16 is a partial side view of a detail of Figures 14 and 15; Figure 17 is a sectional view along the line XVII-XVII o alone

  the round hook is shown in section.

  As the drawings show, a household container 1 according to the invention, all the parts of which are made of synthetic material, comprises a box-shaped lower part 2 on which a cover 3 is mounted. The lower part 2 is provided with ribs of reinforcement 4, 5 and 6 parallel, horizontal and arranged one above the other, and of a certain number of vertical reinforcement ribs 7 and 8, formed in one piece on the side 8 -

  outside 9 of the lower part 2.

  The cover 3 is connected to the lower part 2 by

  hinges designated as a whole at 10.

  As shown, a hinge 10 of this type consists of heels 16 and 17 formed on a longitudinal edge 11 of the cover, on its lower edge 15, which are clipped into housings in the form of slots 18 and 19 of the reinforcing rib horizontal upper 4 of the lower part The heels 16 and 17 are retained so that they cannot be removed from the housings 18 and 19 by means of

lock designated in 20.

  On the opposite longitudinal edge 12 of the cover 3 are formed two legs 22, 23 facing downwards, which are of elastic constitution due to the elasticity of the synthetic material The legs 22, 23 directed downward comprise means of releasable interlockings 24 which penetrate into interlocking slots 25 and 26 formed on the opposite side of the lower part 2 in housings 18, 19 in the form of slots in the upper reinforcing rib 4 The legs 22 and 23 form with the slots 25 and 26 a releasable closure of the

  cover 3 on the lower part 2.

  The two front edges 13 and 14 of the cover 3 are of

smooth constitution.

  As shown, the cover 3 which is in the form of a flat boot is provided with a peripheral side wall 27 and directed downwards, which comprises on its free lower edge a reinforcing element 29 in the form of a frame The legs 22 and 23 as well as

  heels 16 and 17 are formed on the reinforcing element 29.

  As it is advantageous that the upper horizontal reinforcing rib 4 simultaneously forms the support for the cover 3, the latter which comprises the housings 18 and 19 and the engagement slots 25 and 26 is provided at a certain distance from the upper edge 30 of the lower part 2 which is slightly smaller than the height of the side wall 27 surrounding the cover 3, including

the reinforcing element 29.

  As shown, the upper horizontal reinforcement rib 4 n -9 is of relatively wide constitution and forms a grip strip 33

  in the region of the front walls 31 and 32 of the lower part 2.

  Under the upper horizontal reinforcing rib is formed in parallel and at a distance from the latter another horizontal reinforcing rib 5 having a width more

  weaker than that of the reinforcement rib 4.

  The second reinforcing rib 5 is provided over the entire width of the two side walls 34, 35 of the lower part 2 and extends simultaneously partly from both sides on

  each respective front wall 31 and 32.

  As shown, the free ends of the second reinforcing rib 5 on the front walls 31 and 32 are connected by connecting ribs 36 and 37 directed obliquely upward with the upper horizontal reinforcing rib 4 located above and forms well a grip recess 40 by means of which it is

  easy to lift and transport the household container 1.

  As further emerges from the drawings, the upper reinforcing rib 4 is reinforced in its cross section in the region of the housings 18, 19 and of the engagement slots 25 and 26 located opposite on the other side, these recesses being surrounded in a frame manner by reinforced wall regions on the upper side and

  the underside of the reinforcement rib 4.

  The housings 18 and 19 and the engagement slots 25 and 26 are formed in an identical form and produced in this embodiment in the form of rectangular openings 41 in the upper reinforcing rib 4 The longest side of the rectangular openings 41 is parallel to the respective longitudinal walls 34 and 35 of the lower part 2 As a result, when the cover 3 is mounted on the lower part 2, there is no need to ensure an orientation as regards the sides, and it does not matter that the heels 16, 17 of the hinge 10 are introduced into the openings 41 of the side wall 35 or into the openings 41 of the side wall 34 The different names of housings 18, 19 or of engagement slots 25, 26 used for the openings 41 therefore only serve to differentiate them on the functional level. As shown in FIG. 7 by a detailed cross-section view, the locking means 20 can be formed on the heels 16 and 17 in the form of interlocking projections 42 directed outwards on the free ends of the heels 16 and 17, which have in cross section substantially the shape of a triangle with unequal sides and rounded corners This shape was chosen to facilitate the insertion of interlocking projections 42 in the housings 18 and 19

  by passing them through these from above.

  As shown in FIG. 7, the heels 16 and 17 of this embodiment comprise in the region of their upper end a region 43 of reduced wall thickness which constitutes a preferred position for possible folding of the heels 16 and 17 and represents because of this the point of rotation of the hinge due to the elasticity

synthetic material.

  In Figure 9 is shown a different preferred embodiment

  of that of FIG. 7 concerning the construction of the hinge 10.

  As shown, the heels 16 and 17 of this embodiment are constituted at their free ends in the form of hooks 44 facing outwards which, as shown in FIG. 13, are dimensioned in width so as to be received in the housings 18 and 19 according to a

adjustment with clearance.

  As can be seen in particular in the perspective view of FIG. 13, the latching means 20 of this embodiment are constituted in the form of lateral projections 45 and 46 at the ends of the hooks which are turned upwards. The two protrusions 45 and 46 are each provided with an insertion bevel 47 by means of which it is possible to push the ends of the hooks 44 into the openings 41 of the respective housings 18 and 19 when the

cover 3 is completely folded down.

  At the transition between the projections 45 and 46 and the lateral surfaces of the hook 44, these projections 45 and 46 have abutment surfaces 48 which are parallel to the lower edge 15 of the cover 3 and limit the pivoting movement of the cover 3 in

  a substantially horizontal opening position.

  it - The embodiment of the hinge 10 of FIGS. 9 and 13 offers the advantage that this hinge 10 is not constituted by an elastic deformation of the synthetic material, but by the fact that the hook 44 slides practically around the branch exterior of the openings 41, from which results the formation of a hinged connection with its own axis of rotation and which means that the life of the hinge 10 is not limited by possible fatigue of the material . In Figures 14 to 17 is shown a preferred embodiment of

  the construction of the hinge 10 for its practical realization.

  As shown and to a certain extent as in the embodiment of FIG. 9, the heels 16 and 17 of this embodiment are formed at their free ends in the form of round hooks 57 facing outwards. The round hooks 57 are closed after a curvature of 1800, as shown, which means that the locking means 20 are produced by sections 58 or 59 which

  are an extension of this curvature over 1800.

  In the embodiment shown, the curvature of the hooks

round 57 is about 330.

  As shown in FIGS. 14 to 18, the round hooks 57 can be formed on each of the heels 16 and 17 continuously over the entire width of these heels, or as shown in dashed lines in FIG. 15, each of the heels 16 and 17 may include a pair of

  round hooks 57 separated from each other by an intermediate space.

  As can be seen in Figure 14, a branch 61 outwardly limiting the housings 18, 19 is covered by the round hooks 57, this branch having a substantially square cross section whose corners which are located on the c 8 tee outside the

  horizontal reinforcing rib 4 are rounded.

  On the upper internal edge 62 of the branch 61 which faces the housings 18, 19 is provided a bearing surface 63 limiting the pivoting movement of the cover 3, the portion of the heels 16 and 17 located above the round hook 57 coming from stand on this surface

  63 and based on it.

  As shown in the detailed view of the curved end of the 12 - round hook 57 according to FIG. 16, the free edge 64 of the round hook 57 which is turned towards the inner side of the latter is provided with a bevel introduction 65 Interlocking projections 66 are formed facing the introduction bevels 55 on the heels 16 and 17, which means that in the direction of the outside of the opening 67 of the round hook 57, the shape is substantially funnel This facilitates the fixing of the cover 3 on the lower part 2 when the opening 67 is pushed on the branch 61 so as to engage the hinges During insertion, the free end of the round hook 57 is pushed elastically a little towards the exterior, as shown in the

  Figure 16 by a dashed line.

  As can be seen in particular in FIG. 17, a region 68 of the internal surface 69 of the round hook 57 which faces the opening 67 of this hook has a spherical or rounded constitution to avoid friction on the one hand and to facilitate on the other hand the elastic displacement of the round hook 57 when the latter is pushed on

branch 63.

  In Figures 8 and 10 are shown two different embodiments of the legs 22, 23, the embodiment of Figure 10 being shown in perspective in Figure 12 The embodiment of Figures 8 and 10 are different only by the mode on the constructive plane of the front end of lugs 22 and 23, and

  can refer to this subject in the drawings.

  What is common to the two embodiments is that the latching means 24 of the lugs 22 and 23 are formed in the form of latching surfaces 49 perpendicular to the plane of the lugs 22 and 23, which engage when the lugs 22 , 23 have been inserted into the openings 41, with the lower side of the reinforcing rib 4, or more precisely with the branch limiting

opening 41 to the outside.

  The interlocking surfaces 49 are extended on their front edge by introduction bevels 51 directed towards the free ends 50

  tabs 23 by reducing the cross section of the latter.

  To close the cover, it suffices to apply pressure on it from above, so that the tabs 22, 23 pass through the 13 openings and automatically engage on the engagement surfaces 43 on the lower side of the rib. reinforcement 4 due to the elasticity of the synthetic material To open it, it suffices to release the interlocking surfaces 49 of the reinforcement rib 4 by a pressure exerted on the free ends, in particular on the grip recess formed between the insertion bevels 51, so that the tabs can be removed by

the top of the openings 41.

  In FIGS. 3 and 4 are also shown preferred details of the cleaning container according to the invention. As shown, the lower part 2 and the cover 3 have preferably staggered dimensions, their lengths and widths being such that it is possible to arrange two lower parts 2 of a smaller following dimension on a cover 3 of the larger dimension which follows Preferably, the staggering of the dimensions is provided so that the lower part 2 and the cover 3 are staggered according to the DIN dimensions A 4, DIN A, DIN A 6 and DIN A 7. To maintain a stack of household containers of this type, support feet are formed on the lower side 52 of the bottom 51 of the lower part 2, connected to each other to others by sticks 54

  parallel to the c 8 tees in the lower part 2.

  As can be seen in FIG. 4, the cover 3 is provided on its upper side 55 with a profiling projecting upwards and serving to engage in correspondence of shape with the internal side of the rods 54 and support feet 52 The profiling 56 is formed so that the overall external contour of its individual sections corresponds to the internal periphery of the shape determined by the rods 54 and the support feet 52 of a container of the same size Simultaneously , the individual sections of the profiling 56 are subdivided so that this results in partial surfaces corresponding to the internal periphery of the contour formed by the rods 54 and the support feet 52 of two cleaning trays 1 of the

next smaller dimension.

  The profiling 56 of two household bins 1 of the following smaller dimension arranged one against the other on a cover 3 form 14 - again a profiling allowing the installation of a household bins i of the larger dimension next Thus, a stack can be produced which prohibits off-center household trays 1 of different dimensions. All the features and advantages of the invention

  which emerge from the description, including constructive details and

  spatial arrangements can be made both individually and in any combination depending on the

concept of invention.

-

Claims (25)

  1 plastic household container comprising a boot-shaped lower part and a cover mounted thereon, horizontal and vertical reinforcing ribs being provided on the external side of the lower part and the cover being connected to the lower part by a hinge, characterized in that the hinge (10) is constituted by two heels (16, 17) formed on a longitudinal edge (11) of the cover (3), namely its lower edge (15), which engage in two slots (18, 19) in the form of slots formed in a horizontal reinforcement rib (4) of the lower part (2) and are locked so that they cannot be removed by locking means (20, 21), and in that two legs (23, 23) directed downwards and comprising releasable engagement means (24) are formed on the opposite longitudinal edge (12) of the cover (3), means which penetrate into enclosure slots notch (25, 26) formed in the reinforcing rib (4) on the c 6 tee of the lower part (2) which is opposite the housings (18, 19) in form of slots.   2 household container according to claim 1, characterized in that the cover (3) is provided with a peripheral side wall (27) and directed downwards, provided on its free lower edge (28) with a reinforcing element (29), and in that the legs (22, 23) and the   heels (16, 17) are formed on the reinforcing element (29).   3 household container according to claim 1 or 2, characterized in that the reinforcing rib (4) upper horizontal containing the housing (18, 19) and the engagement slots (25, 26) is disposed at a certain distance from the upper edge (30) of the lower part (2), which is slightly smaller than the height of the wall side (27) of the cover (3).   4 household bin according to any one of claims   previous, characterized in that the horizontal upper reinforcement rib (4) is formed in the form of a grip strip (33) in the region of the side walls (31, 32) of the part lower (2).   5 household container according to claim 4, characterized in that it 16 - is provided in parallel and at a certain distance below the reinforcement rib (4) horizontal and upper another reinforcement rib (5) horizontal narrower in width, in that this other reinforcing rib (5) is disposed on the two longitudinal walls (34, 35) of the lower part (2) and extends in part on the respective front walls (31, 32), and in that the free ends of the other reinforcing rib (5) are connected to the horizontal upper reinforcing rib (4) by connecting ribs (36, 37) oriented obliquely upward, forming a recessed handle (40).   6 household bin according to any one of claims   previous, characterized in that the upper reinforcing rib (4) is reinforced in cross section in the region of the   housings (18, 19) and interlocking slots (25, 26).   7 household bin according to any one of claims   previous, characterized in that the housings (18, 19) and the slots   of engagement (25, 26) have an identical shape.   8 cleaning tray according to claim 7, characterized in that the housings (18, 19) and the engagement slots (25, 26) are formed in the form of rectangular openings (41) in the reinforcing rib (4) upper, their long c 6 being parallel to the   respective longitudinal wall (34, 35) of the lower part (2).   9 household bin according to any one of claims   previous, characterized in that the locking means (20) are formed on the heels (16, 17) in the form of interlocking projections (42) directed outwards on the ends free of these heels (16, 17).   Household container according to claim 9, characterized in that the heels (16, 17) have in the region of their upper end a region (43) with a thinner wall forming the point of rotation of the hinge (10) due to the elasticity of the synthetic material.   11 household container according to any one of claims 1 to 8,   characterized in that the heels (16, 17) are formed at their free ends in the form of hooks (44) facing outwards, 17 - and in that the locking means (20) are formed at the   ends of the hooks in the form of lateral projections (45, 46).   12 household container according to claim 11, characterized in that   the hooks (44) are rounded forming an arc of 1800.   13 Household container according to claim 11 or 12, characterized in   that the projections (46) are provided with an introduction bevel (47).   14 household container according to claim 11 or 12, characterized in that the projections (45, 46) are provided with abutment surfaces (48)   limiting the pivoting movement of the cover (3).   15 household container according to any one of claims 1 to 8,   characterized in that the heels (16, 17) are formed at their free ends in the form of round hooks (57) facing outwards and in that the locking means (20) are constituted by a section (58, 59 ) round hooks (57) forming a curvature of 1800.   16 household container according to claim 15, characterized in that   the curvature of the round hooks (57) is approximately 330.   17 Household container according to claim 15 or 16, characterized in that each of the heels (16 and 17) is constituted in the form of a pair of round hooks (57) separated from each other by a space intermediate (60).   18 household container according to any one of claims 15 to   17, characterized in that a branch (61) limiting the housings (18,   19) outward is surrounded by the round hooks (57).   19 Household container according to claim 18, characterized in that the branch (61) has a substantially square section with rounded corners towards the outer side of the horizontal reinforcing rib (4). Household container according to claim 19, characterized in that there is provided on the internal edge (62) of the branch (61) which faces the housings (18, 19) a bearing surface (63) which limits   the pivoting movement of the cover (3).   21 household container according to any one of claims 15 to   , characterized in that the free edge (64) of the round hooks (57)   turned towards their internal side is provided with an introduction bevel (65).   r '18 - 22 Household container according to claim 21, characterized in that opposite latching projections (66) are formed on the heels   (16, 17) of the introduction bevels (65).   23 household container according to any one of claims 15 to   22, characterized in that a region (68) of the internal surface (69) which is located opposite the opening (67) of the round hooks (57) is   incorporated in a spherical or rounded form.   24 household container according to any one of claims   previous, characterized in that the latching means (24) are formed in the form of latching surfaces (49) arranged perpendicularly to the lugs (22, 23) and also to the plan of these legs (22, 23).   Household container according to claim 24, characterized in that the interlocking surfaces (49) are connected to insertion bevels (51) directed towards the free ends (50) of the legs (22, 23).   26 household container according to any one of claims   previous, characterized in that the lower part (2) comprising the cover (3) has staggered dimensions, the lengths and widths of which are such that two respective lower parts (2) of the next smaller dimension are received on a   cover (3) of the respective larger dimension which follows.   27 Household container according to claim 26, characterized in that the lower part (2) and the cover (3) have dimensions   staggered according to DIN A 4, DIN A 5, DIN A 6 and DIN A 7 standards.   28 household bin according to any one of claims   previous, characterized in that support feet (53) are formed on the lower side (52) of the bottom (51) of the part lower (2).   29 Household container according to claim 28, characterized in that the feet are connected by rods (54) parallel to the sides of the lower part.   Household container according to claim 28 or 29, characterized in that the cover (3) is provided on its upper side (55) with a profiling (56) corresponding on the one hand to the shape constituted by the 19 - feet d support (53) and the strips (54) of a household container (1) of the same size, and simultaneously with the shape formed by the feet (53) and the strips (54) of two household containers having the dimension more   next little one, so as to prevent them from decentering.