ES2264639B1 - BED EQUIPMENT FOR SICK AND DISABLED. - Google Patents

Abstract

Bed equipment for the sick and disabled. It is a team designed to facilitate and improve the hygiene and cleanliness of a person who cannot stand on his own without having to change it from his place of location as it is happening conventionally, that is, at all times staying in the equipment of bed of the invention. It basically comprises a base structure with wheels that supports a height-adjustable upper bed assembly to be able to place it in a desired horizontal plane in a stable way; a lower bed assembly (3) removable at least to one side of the base structure (1) and a height-adjustable bathtub assembly (4) always arranged below the upper bed (2) to collect water and feces afterwards to perform the cleaning and hygiene of the disabled bedridden (2).

Description

Bed equipment for the sick and disabled.

Object of the invention

The present invention, as expressed in the set forth in this specification, refers to a team of bed for the sick and disabled that is designed to facilitate and improve the hygiene and cleanliness of a person who does not can fend for itself, without having to change it of location, that is, staying on the bed equipment of the invention.

It provides means of comfort and functionality to the people in charge of performing the cleaning tasks and Hygiene of the disabled person, with minimal discomfort in the attention that is being given, since all the necessary tasks that are required may be carried out without transferring that person prevented.

Background of the invention

Currently, there are several procedures to carry out the necessary hygiene on people disabled and sick, who cannot move, so that in All these procedures need to be transferred to the person prevented from bed where she is usually bedridden to the place where it will be done after cleaning and hygiene staff, with the disorder and discomfort known, for the person object of attention.

However, due to weight and safety, in In most cases the transfer is done by cranes specials, which, due to their high cost, are only at reach of large clinics and hospitals, causing discomfort discomfort and obvious disorders to the patient, such as noted above.

Another problem that arises in attention is that In most cases, people who care for the disabled they have just forces to carry out hygiene tasks and cleaning, causing great fatigue and difficulty in those mentioned people, and therefore pain and suffering in the person prevented to meet your needs.

Description of the invention

In order to achieve the objectives and avoid the drawbacks mentioned in the previous sections, the invention proposes a bed equipment for disabled patients which is characterized in principle because it comprises a structure base that supports a first bed set that incorporates a lower frame with displacement in a horizontal plane for to be able to remove it along with its box spring and mattress outside the structure base remaining associated with it and a second set of upper bed that incorporates another frame with its box spring, in principle without mattress, which is arranged above the First bed set.

This second set of upper bed is characterized in that it includes means of vertical displacement for be able to place it stably in a horizontal plane at height desired to carry out the cleaning and hygiene of the patient and / or disabled.

So, being the disabled person lying down on the mattress of the lower bed with interposition of some resistant and wide cross strips and said bed being bottom inside the base structure, the bed will be placed upper in a low position (if not) until entering contact with the lower bed. Being in this situation, it they will hook the transverse strips by their ends to the bed base of the superior bed, with which the disabled person will be associated and linked to said upper bed, then proceeding to its lifting to a desired height to carry out hygiene and cleaning of the handicapped that has also been evidently elevated together with the elevation of the upper bed, being supported the hindered on cross strips.

Another feature of the invention is the incorporation of a bathtub set that has a third frame vertically scrollable to collect dirty water and excrement when cleaning and hygiene of the disabled. To do this, this bathtub set will be located below the superior bed set in proximity to it, having previously placed the lower bed outside the structure base.

The equipment of the invention is further complemented with an additional independent cart that will be placed below of the bathtub set to collect the dirty water and excrement, counting for it the bathtub with a bottom descending towards its mouth of exit faced with an additional cart container.

Once the cleaning has been done e hygiene of the disabled person the independent cart is removed and the bathtub assembly is placed in a low plane below the plane that occupies the lower bed. Then the bed is placed upper in a low position until it comes into contact with the lower bed placed inside the base structure. In this moment the disabled person is back on the mattress of the lower bed with interposition of the tapes or strips transversal, then proceeding to unhook them from the upper bed base, being able to be placed next in an elevated position, but without the disabled person found bedridden again in the lower bed.

We see that the person in charge of cleaning and hygiene has not needed to move the disabled directly and  therefore he has not had to make physical efforts.

The base structure is characterized because it comprises two corresponding stringers with the sides of the team of the invention, a headboard and a footboard, with respective tubular crossbars, each of which start two pairs of tubular columns in vertical direction: exteriors of greater height and interiors of a lower height.

In turn, the outer columns of the headboard they are associated by a low-rise bridge, while the interior columns of the footboard are linked by another Bridge also of low height.

Moreover, another feature of the invention is that the means to lower and raise the bed upper consist of that within each pair of vertical columns  exteriors attached to the tubular crossbars of the headboard and footboard, there is a device or mechanism to raise or lower said upper bed, so that its frame counts in its corners with terminal portions that connect with each other guided supports within the columns, counting for it same with vertical slots that communicate the interior of the cited columns with the outside.

Considering each pair of outer columns of the  footboard or headboard, inside one of them is a spindle where one of the brackets or guide bodies is threaded, while this support is connected the end of a coupled chain also to some lower pinions located in the lower part of the columns, rather in correspondence with the interior of the crossbars, while the opposite end of that chain is connected to the support of the other even column, in whose part of above there is another upper pinion where the chain, which obviously also covers the inside of the headboard and footboard crossbars.

So, by spinning the spindles, the threaded brackets to them will drag simultaneously with them to the even supports through the chains, going up or lowering the upper bed depending on the direction of rotation of said spindles.

The interior columns incorporate another same mechanism as described to be able to raise and lower the set of  bathtub through its frame.

All spindles rotate by means of small engines that transmit their movement through pulleys and straps, while they are attached to small supports elongated in solidarity with upper portions of respective vertical columns

However, the engine element could be any other, for example a pneumatic or hydraulic cylinder. In this case the spindle and motor would be replaced by a cylinder that would be located inside the columns replacing the spindles. Even in this case, chains and sprockets could be dispensed with, for which some cylinders would be incorporated in all vertical columns with synchronized movements.
two.

Other features of the invention are they refer to the structure presented by the two bed bases and their linking means to the respective frames.

Each of these bed bases comprises two lateral supports centered and in solidarity with the stringers of the   racks and two connected hinged end frames articulated to those centered supports, corresponding those armor with the body and lower limbs of the user disabled or sick

The lower bed frame incorporates the less a mechanism driven by a motor to fold and deploy the folding armors with different inclinations according to needs, so how much this bed is inside of the base structure below the upper bed, the movement folding of the aforementioned armor will be transmitted to the armor folding of the upper bed, being able to link in this case said armor through small plates with extreme joints

In turn, the bed base of the upper bed, which does not has a mattress, includes at least one central cross strip attached to the two lateral supports and at least two other strips crossbars fixed on the side sections of the reinforcements extreme, the fixing of such strips being removable.

Another feature of the invention is the linking the lower bed to the base structure through its frame.

For this, this frame incorporates two bars Parallel that fit into individual guide tubes of the base structure, with the possibility of incorporating bearings linear to get a finer guidance. Obviously these guide tubes are located on the side where it is removed The lower bed to the outside.

The base structure also includes two wheels docked on fixed supports and two wheels docked on supports swivel with brake to comfortably handle the equipment the invention.

The independent cart is characterized because is determined from a base platform with wheels, by above which a container with lid is located to collect the dirty water and excrement, container located between two bridges that start from the base platform. From one of these bridges starts a handle.

The container can rise and fall to adjust at the desired height using two vertical spindles that rotate to through a motor element fixed to one of the two bridges in solidarity with the platform. The container incorporates a key Step to drain your content.

To facilitate the application and use of the cart, the crossbar of the base structure opposite to the extraction side of the lower bed, it is capable of incorporating a bridge centered where the cart will be inserted without requiring raise it with respect to the ground.

Other features of the invention is the detachable union of the different elements of the equipment, on all in regards to the base structure, highlighting the linking the vertical columns, crossbars and stringers that It is carried out by means of characteristic fixing brackets.

The sick or disabled person is always in the  lower bed base and with interposed transverse strips, the bathtub under this bed base and the upper bed base in its position of rest is always in the low position with the strips unhooked of its sides, thus allowing the bed base articulated lower with its mattress and sick included, can be activate the lower bed base joints without the bed base superior cause any problems, as the bed base superior by having loose cross strips on its sides, the surface is completely free and empty, and the sides the same always lower than the plane of the mattress where it rests the patient.

Therefore, when you want to get on the sick it is only necessary to hook the loose strips to the sides of the upper bed base and raise the patient to the desired position. Then the lower frame moves with its box spring and mattress included laterally to leave the central space of the free bed structure to raise the bathtub to the height desired.

Transversal strips with the patient in elevated position are interchangeable without disturbing it for be able to wash the parts where the initial strips of elevation, and once this operation is completed, other dry strips in the initial positions and the strips are removed wet.

Then the bathtub is lowered into position low, the lower frame moves with its box spring and mattress included inside the base structure and then the upper bed base until the patient comes into contact with the mattress surface, the sides being lower than the mattress surface. In this position the strips are disengaged but we no longer have to move the box spring block at all superior, since this will not hinder any joint action of the lower bed base with the mattress and sick included, so that the upper bed base and its frame will be arranged around the lower bed base.

Next to facilitate a better understanding of this descriptive report and being an integral part of the same accompany some figures in which with character illustrative and not limiting the object of the invention.

Brief description of the drawings

Figure 1.- Shows a perspective view of the bed equipment for the sick and disabled, subject of invention. It basically comprises a base structure, a set Removable lower bed, a height adjustable upper bed without mattress where hygiene and cleaning of the disabled person is performed, a bathtub set where dirty water and excrement fall during cleaning and an independent cart where they are collected finally those dirty waters and excrement.

Figure 2.- Shows a perspective view of The base structure.

Figure 3.- Represents another view of the team the invention where essentially a device of regulation that acts on a folding frame of a box spring It is part of the lower bed.

Figure 4.- Shows another perspective view of the  equipment of the invention with the upper bed placed in a raised position and bathtub set.

Figure 5.- Represents a view of the structure base where it essentially shows the mechanism that provides the vertical displacement of the bathtub assembly to place it on the desired height

Figure 6.- Shows a view similar to the previous where the mechanism of rise and fall of the upper bed

Figure 7.- Shows a view of the equipment where the  lower bed set is in a position Exterior.

Figure 8.- Shows a perspective view of the independent wastewater collection cart and faeces.

Description of the preferred embodiment

Considering the numbering adopted in the figures, the bed team for the sick and disabled determined from a base structure 1 that supports a set of upper bed 2 without mattress, adjustable in height, a set of lower bed 3 removable to one of the sides, a set of bathtub 4 also adjustable in height always placed by under the upper bed 2, bathtub set intended for collect dirty water and feces after carrying out the cleaning and hygiene for the disabled person lying on bed base 5 top 2 and an independent cart 6 where they will be picked up finally said dirty water and excrement.

The upper bed set comprises in beginning a frame 7 and the bed base mentioned above 5, while the lower bed assembly 3, apart from the frame 8 and box spring 9, It also includes a mattress 10.

The base structure 1 comprises in principle two tubular stringers 11 corresponding to the sides of the equipment of the invention, a headboard and a footboard, with respective tubular crossbars 12, each of which start two pairs of vertical columns of tubular structure: outer ones 13 of greater height that start from the proximities of the ends of the crossbars 12 and other interior columns 14 of smaller height that start from points farther from the ends of such tubular crossbars 12.

The two outer columns 13 of the headboard they are linked by a low-rise bridge 15, while that the interior columns 14 of the footboard are linked by another minor bridge 16 similar to the previous one.

At the free ends of the other columns Remaining configuration end caps 17 are attached bulging

Attached to the headboard crossbar 12 there are two rotating stands 18 with wheels 19 which also include a brake 20, while two more are joined to the crossbar 12 of the footboard fixed supports 21 with other wheels 19.

The crossbars 12, stringers 11 and columns exteriors 13 are joined together in a removable manner by means of characteristic fixing brackets 22 with screws.

In turn, the inner columns 14 join the crossbars 12, also detachably, by other fixing brackets 23 with the help of other screws.

The rise and fall of the upper bed set 2 to place it in a desired stable horizontal position, it carried out through a mechanism that is determined from guide bodies 24 and 25 conducted within the columns outer 13, counting these guide bodies 24 with portions protrusions 26 embedded in longitudinal slots 28 of the columns 13, so that those protruding portions are coupled through pins in other terminal portions 27 solidarity of the corners of the frame 7 of that upper bed assembly 2.

The simultaneous displacement of these bodies guide 24 and 25 provide the rise and fall of the whole of the upper bed 2.

To do this, within two of the columns external 13 and diagonally opposite, there are spindles coaxial 29 where two of the mentioned supports 24 are coupled connected to each of them the end of a chain 30 that runs inside the crossbars 12 engaging in two sprockets bottom 31 located on said crossbars 12 aligned with the inside of columns 13, there is a third upper pinion 32 in the highest part of the outer columns 13 that do not incorporate the spindles, engaging in this third sprocket 32 also the respective chain 30, whose free end connects finally with the respective guide body 25 found in the columns 13 that do not incorporate said spindles 29. That third pinion 32 is coupled to a piece in the shape of an inverted bowl 33 with interposition of a short axis.

The coaxial spindles 29 rotate by means of small engines 34 that transmit their movement by means of pulleys 35 and belts 36, while they are fixed on supports elongated 37 solidarity perpendicular to portions upper of the respective vertical columns 13 incorporating the aforementioned spindles 29.

Therefore, when the spindles are rotated  coaxial 29, the guide bodies 24 threaded thereto drag to the other two even guide bodies 25 through the chains 30, raising or lowering the upper bed 2 depending on the direction of turn.

The inner columns 14 incorporate another same mechanism as described to raise and lower the set of bathtub 4 through its frame 38, matching the references of these mechanisms.

The bed bases 5 and 9 of the upper bed 2 e bottom 3 comprise two centered lateral supports 39 and 40 secured, by screws, to the stringers of the respective racks 7 and 8 and two folding end frames in general form of "U" 42 and 43 connected articulately by their free ends to the supports entered 39 and 40.

The lower bed base 3 incorporates some conventional mechanisms 44 to be able to position independent folding armors 43 with different inclinations according to the needs and accommodation of the person prevented. When this lower bed 3 is below the upper bed 2 and both being in contact, the movement provided by the mechanism or mechanisms 44 mentioned above are will also transmit to the folding armors 42 of the bed upper 2. In this case you can associate both bed bases 5 and 9 by means of side plates 45 with extreme joints.

Each of said mechanisms 44 comprises basically a fixed transverse body 46 where a motor 47, whose axis is connected with a longitudinal spindle 48 with two different threading sections (right and left) where attach respective nut elements 49 and 50 where they articulate a turn pairs of parallel plates 51 and 52 that converge on an axis common transverse 53 where the armor branches support respective 43 for its dejection up and down, at rotate spindle 48 in one direction or another.

The bed base 5 of the upper bed 2 includes a wide cross strip 54 fixed to the two lateral supports fixed 39 and two strips plus 54 attached to the branches of the two extreme reinforcements 42. This fixation is removable and is performed by some protruding lugs 55 where they fit tightly extreme holes of said strips 54.

Instead, the lower bed base 3 includes a set of transverse slats 56 fixed to the lateral supports 40 and branches of the reinforcements 43.

The independent cart 6 comprises a base platform 57 with wheels 58, platform 57 from which they start  upwards two vertical bridges 59, between which a container 60 with removable lid 61, counting the same with outgoing extensions 62 at its base that thread into a pair of vertical spindles 63 coupled at their ends in pieces solidarity of platform 57 and top of the bridges 59.

In turn, an engine is fixed on one of the bridges 64 which transmits its rotational movement to one of the spindles 63 to raise and lower the container 60. Both spindles 63 are linked each other using a common belt 65 and two extreme pulleys 66 placed at the lower ends of the spindles 63 below of platform 57.

The container 60 incorporates a tap 67 to empty its contents after cleaning and hygiene of the disabled person.

Finally, cart 6 incorporates a handle of thrust and manipulation 68 that starts from one of the bridges vertical 59 integral to the base platform 57.

One of the base structure stringers 1 incorporates a centered bridge 69 where you can enter the cart 6 inside the base structure 1 to place it below from bathtub 4 in order to comfortably collect the waters and excrement during cleaning and hygiene of the disabled.

For this, the bath 4 has a bottom descending to an outlet 70 that is faced with the mouth of the container 60, this rising to the height specify until it is close to said outlet 70.

The cover 61 consists of a flat piece with a handle that is complemented with a front groove 72 of the container 60 and a small interior perimeter projection 73 near its mouth to facilitate its movement.

Linking the lower bed 3 to the base structure 1 consists of a pair of parallel bars transversal 71 solidarity of its frame 8, bars 71 that fit on guide supports 41 integral to the base structure 1 in correspondence with the side where the set of lower bed 3.

With this arrangement described, the disabled person lying on mattress 10 of the lower bed 3, with interposition of the resistant and wide strips transverse 54 and said lower bed 3 being within the base structure 1, the upper bed 2 will be placed (if it is not already) in a low position until coming into contact with the bed lower 3. Being in this situation, the strips will be hooked transverse 54 through its extreme holes to the protruding studs 55 of the bed base 5 of the upper bed 2, whereby the person prevented will be associated with said upper bed 2, proceeding then to its elevation to a desired height to carry out Hygiene and cleanliness of the handicapped comfortably.

Once the cleaning is done, the bed will be placed  upper 2 in a low position until it enters contact again with the lower bed 3 placed inside the base structure 1. At this time the disabled person is again resting on the mattress 10 of the lower bed 3 with interposition of the tapes or cross strips 54, then proceeding to unhook them from the bed base 5 of the upper bed 2, being able to place it in an elevated position, but without the disabled person who is bedridden again lower. The cross strips 54 can also be engaged in other similar lugs 55 supportive of the bed base 9 lower 3 when the disabled person is prostrated in it.

Claims (18)

1. Bed equipment for the sick and disabled, that being intended to serve people prevented, it comprises a base structure with wheels that supports:

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a upper bed set (2) without mattress and height adjustable for place it in a desired horizontal plane stably;

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a lower bed set (3) with mattress (10), removable bed less towards one side of the base structure (1); mattress (10) where the disabled person is normally prostrated with interposition of transverse strips (54);

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a height adjustable bathtub set (4) always arranged by under the upper bed (2) to collect water and feces after cleaning and hygiene of the disabled person prostrated in the upper bed (2);

all in order to be able to clean and hygiene of the disabled person without having to move it directly, from  way that the upper bed is placed (2) if it is not in a Low position until you contact the lower bed (3), moment in which the cross strips are hooked at their ends to the upper bed (2), rising afterwards along with the prevented, up to a desired height and approaching below the same, the bathtub (4). characterized because the upper bed (2) and the bathtub set (4) they rise and fall by means of mechanisms operated through some motor elements, mechanisms that incorporate two groups of guide bodies driven into tubular columns, exterior (13) and interior (14), which are part of the headboard and footboard of the base structure (1), counting said guide bodies with outgoing portions (26) that run through grooves longitudinal (28) of said columns (13) and (14), while such protruding portions (26) connect with other portions terminals (27) solidarity of the four corners of the frames  (7) and (38) of the upper bed set (2) and bathtub (4); all this in order that when the motor elements act on the guide bodies, raise and lower the bathtub and the upper bed of independent form, is associated with the group of outer columns (13) of greater height and the bathtub (4) to the group of columns interiors (14) of lower height. 2. Bed equipment for the sick and disabled, according to claim 1, characterized in that the guide bodies are associated with linear motor elements, such as oleohydraulic or pneumatic cylinders, which act simultaneously and synchronously on each group of guide bodies. 3. Equipment bed for sick and disabled according to claim 1, wherein the guide bodies are associated evenly by chains (30), each of which engages a pair of lower pinions (31) located below the columns (13) and (14) facing the interior thereof and pinions (32) arranged superiorly within the diagonally opposite columns of each group of them, incorporating the other diagonally opposite columns evenly therein, coaxial spindles (29) where respective guide bodies (24) are coupled where one end of the chains (30) is connected, while the opposite end is connected with another even guide body (25) of the same end of the base structure (1); the spindle rotation (29) being transmitted by means of respective synchronized rotation motors. 4. Bed equipment for the sick and disabled, according to claim 3, characterized in that the motors (34) are fixed on elongated supports (37) connected perpendicularly to upper sections of the respective diagonally opposite vertical columns (13) and (14 ), the movement being transmitted by pulleys (35) and belts (36). 5. Bed equipment for the sick and disabled, according to any one of claims 3 6 4, characterized in that the diagonally opposite columns incorporating the upper sprockets (32), include reinforcement pieces in the form of an inverted bowl (33), inside which are said upper sprockets (32). 6. Bed equipment for the sick and disabled, according to any one of the preceding claims, characterized in that the lower bed assembly (3) is linked to the base structure (1) by two transverse end guides near the headboard and footboard, guided by they consist of guide supports (41) integral with the base structure (1) and in which two cross bars (71) of a frame (8) of the lower bed are adjusted and driven. 7. Bed equipment for the sick and disabled, according to claim 6, characterized in that the guides of the lower bed (3) incorporate linear bearings that facilitate the removal and introduction of said lower bed (3). 8. Bed equipment for the sick and disabled, according to any one of the preceding claims, characterized in that the base structure (1) comprises two stringers (11) and two tubular crossbars (12), from which the pairs of columns start up exterior (13) and interior (14), joining all these elements detachably through connection brackets (22) and (23) with screws, so that brackets (22) associate the stringers (11) , crossbars (12) and outer columns (13), while the other supports (23) associate the inner columns (14) with the crossbars (12). 9. Bed equipment for the sick and disabled, according to claim 8, characterized in that the pair of outer columns (13) of the headboard, as well as the pair of inner columns (14) of the footboard are linked by their free ends by means of bridges ( 15) and (16) of low height, respectively, while the free ends of the other columns are closed by domed caps (17). 10. Equipment bed for sick and disabled according to any one of the preceding claims, characterized in that the bedsteads (5) and (9) of the upper bed (2) and lower (3) comprise lateral supports centered (39) and (40) in solidarity with the rails of their frames (7) and (8) and some general "U" -shaped reinforcements (42) and (43) that articulate at their ends in said centered lateral supports (39) and ( 40). 11. Bed equipment for the sick and disabled, according to claim 10, characterized in that it incorporates at least three transverse strips (54) of support for the disabled to perform their cleaning and hygiene: a strip that is fixed at its ends to the respective lateral supports and the other two strips that are attached to the branches of the respective extreme armor. 12. Bed equipment for the sick and disabled, according to claim 11, characterized in that the fixation of the transverse strips (54) is detachably fixed to the structures of the bed bases (5 and 9) by means of protruding lugs (55) which they fit into end holes of those same cross strips (54). 13. Equipment bed for sick and disabled according to claims 3 and 8, characterized in that the chains (30) forming part of the mechanisms of raising and lowering of the upper bed (2) and tub (4), said chains extending inferiorly by the interior of the crossbars (12), as well as by the interior of the tubular columns (13) and (14) of the base structure (1). 14. Bed equipment for the sick and disabled, according to claim 10, characterized in that the frame (8) of the lower bed assembly (3) incorporates at least one conventional folding mechanism (44) acting at least on one of the frames ends (42) of the bed base (9) of that lower bed (3), thus placing said reinforcements (42) in the desired position; being able to transmit the folding movement of these reinforcements (42) to the folding reinforcements (43) of the bed base (5) of the upper bed (2), when it is close to the lower one in overlapping planes within the base structure (1) . 15. Bed equipment for the sick and disabled, according to any one of the preceding claims, characterized in that it includes an independent trolley (6) with wheels (58) incorporating at least one container (60) with lid (61) adjustable in height, trolley that is complemented with a bridge (69) of passage of that cart, bridge established in one of the stringers (11) of the base structure (1), also including the container (60) a stopcock (67) to extract its content; all this in order to be able to collect the dirty water and excrement of the disabled person prostrated superiorly in the bed base (5) of the upper bed (2), dirty water and excrement that first fall into the bathtub (4) and then fall down mouth (70) to the aforementioned container (60). 16. Bed equipment for the sick and disabled, according to claim 15, characterized in that the raising and lowering of the container (60) is regulated by a mechanism of two vertical spindles (63), one of which is associated with a motor (64 ) to rotate the two related spindles by means of two pulleys (66) and a transmission belt (65), said projections engaging projecting extensions (62) integral with the base of the container (60). 17. Equipment bed for sick and disabled according to claim 16, characterized in that the carriage (6) incorporates a base platform (15) and two vertical bridges (59) between the container (60) is located, noticing one of them the motor (64) and an end section of the vertical spindles (63) while the opposite end is fixed to a part of the platform (57), the carriage (6) also having a handling handle (68) which starts from one of the bridges mentioned. 18. Bed equipment for the sick and disabled, according to any one of claims 15 to 17, characterized in that the lid (61) consists of a flat piece that is complemented by a front groove (72) of the container (60) and a small interior perimeter projection (73) near its mouth.