ES2329382T3 - WASTE RECOVERY DEVICE IN A VACUUM CLEANER. - Google Patents

Abstract

An electric vacuum cleaner (84) comprising a frame or chassis (86), inside which a motor-fan block is housed, as well as a removable waste recovery receptacle (70, 106), arranged vertically inside a housing (90) of the chassis (86), such that the chassis comprises a connection mouth with air communication (92), which opens, at one of its ends, inside the housing, so that said receptacle (70, 106) is substantially parallelepipedic and inside there is a dust bag (40), said bag (40) comprising a cardboard (60, 100), made of a relatively rigid material and provided with an opening (34 ) which gives access to the volume of a filter casing (42), fixed in the cardboard (60, 100), such that the receptacle (70, 106) comprises a handle or grip (80) for its removal from the chassis (86), characterized in that: - the handle (80) is dispu it is on the upper face of the receptacle (70, 106), so that said receptacle face (70, 106) constitutes a part of the upper face of the vacuum cleaner (84), such that the receptacle (70, 106) it is made directly accessible by the user, - the cardboard (60, 100) occupies one of the lateral faces of the receptacle (70, 106), - the end of the connection mouth with air communication (92) is slightly inserted in the opening of the cardboard (60, 100) or arranged face to face with said cardboard (60, 100) when the receptacle (70, 106) is arranged inside the housing (90).

Description

Waste recovery device in a vaccum cleaner.

The present invention relates to a dust recovery device, housed inside a vacuum cleaner that uses a dust bag, and, more particularly, to a hygienic and use device simple.

The use of dust bags within vacuum cleaners, in order to temporarily store waste, is widely spread The bag allows simple handling of waste The union, or fixation, of the bag inside the Vacuum cleaner is guaranteed, in general, thanks to a part relatively rigid, which is an integral part of the bag, to often made in the form of a cardboard sheet provided with a opening, which allows the connection with air communication between the suction duct attached to the sucker, and the bag for the powder. In what follows from the description, it will be used to designate this part the term cardboard.

One of the drawbacks of this type of dust separator concerns its renewal. Indeed, when the bag needs to be replaced, its replacement often implies its direct manipulation, which can produce a ejection of dust inside the part that has just been treated and / or on the user who is changing the
bag.

It is known from WO 00/353331 a vacuum cleaner comprising a frame or chassis inside which it houses a removable receptacle provided with a filter in its part bottom, as well as an ejection paper bag. The receptacle It comprises a handle on its front wall. The bag is provided with a cardboard that constitutes the upper face. In this way, the vacuum cleaner comprises a pivoting top cover that comes to cover the cardboard, carrying out the connection with communication of air between a flexible tube attached to the sucker and the bag for the powder. It is thus necessary to swing this cover to access the dust receptacle, as well as unlocking the receptacle, what which complicates the operation of changing the dust bag.

One of the purposes of the present invention is to remedy these inconveniences by proposing a simplification for the replacement of the dust bag, by time that the hygienic aspect of this replacement is preserved by the single manipulation of the receptacle that contains the bag.

The present invention is achieved with the help of an electric vacuum cleaner comprising a frame or chassis, in whose inside is a block of motorbike fan, as well as a removable waste recovery receptacle, arranged inside a chassis housing, such that the chassis comprises a connection mouth with communication of air, open, by one of its ends, inside the housing, such that said receptacle is one way noticeably parallelepipedic, and inside it can be arranged a dust bag, such that said bag comprises a cardboard made of a relatively rigid material and provided with a opening that gives access to the volume of a fixed filter wrap in the carton, the receptacle comprising a grip handle for its removal from the chassis, characterized by:

- the receptacle is arranged vertically inside the accommodation,

- the handle is arranged on the upper face of the receptacle, such that said receptacle face it forms a part of the upper face of the vacuum cleaner, of such luckily the receptacle is made directly accessible by the Username.

In this way, thanks to this provision, the receptacle is constantly visible by the user and easily accessible. The vertical layout helps practical handling of the receptacle.

Advantageously, when a bag is arranged in the receptacle, the cardboard in the bag occupies one of the faces side of the receptacle and the mouth end of the connection with air communication is then slightly inserted inside the cardboard opening or face to face with with respect to said cardboard, when the receptacle is arranged inside of accommodation.

When the carton of the bag is arranged laterally, the suppression of their interaction or interference with the mouth, when the latter is slightly inserted in the inside the cardboard opening, can be carried out by forcing the cardboard to fold to escape the interaction with the mouthpiece. For the expression "slightly inserted" you should it is understood that the connection mouth penetrates into the interior of the bag a distance less than one centimeter.

The stiffness presented by the cardboard must be interpreted in the sense that the cardboard presents a good mechanical resistance, but also presents a certain flexibility and, in particular, a transverse elasticity for allow, after its warp, return to its rectilinear position initial when the interaction between the cardboard and the mouth ends of connection, especially when the latter penetrates slightly inside the opening of said cardboard.

Preferably, the receptacle is arranged slider inside the housing. Thus,  the removal of the receptacle is simplified without further manipulation than that of sliding the receptacle of its housing into the Vacuum cleaner.

On the other hand, when occupying the cardboard of the bag one of the faces of the receptacle, the replacement of the bag looks facilitated, the latter being easily accessible.

Advantageously, the receptacle housing it is complementary to that of said receptacle, which guarantees an automatic and identical placement of the opening of the cardboard face to face with the mouthpiece.

According to one of the preferred ways of putting in practice of the invention, the end of the connection mouth with air communication it is of substantially circular section and is arranged in the sliding path of the receptacle.

This mode of implementation allows the interaction between the connection mouth with air communication and the cardboard to be automatically generated, so that the latter must be combined to effect the total introduction of the receptacle into the vacuum cleaner, so that the combing comes provided, thanks to the elastic effect of the cardboard, by the necessary interaction between the end of the mouth and the opening of the bag. This interaction occurs, therefore, without direct manipulation of the bag that is inside the receptacle. In the same way, at the time of removing the receptacle, the cardboard is sagging to escape the interaction of the mouth, without direct manipulation of the bag, which reduces the risk of it coming out at the time of changing said bag for him
powder.

Advantageously, the cardboard rests on some projections projecting from peripheral faces to face occupied by the cardboard, so that the cardboard comb can be fully realized

According to a preferred embodiment of the cardboard, the latter is made of a relatively rigid material, such that said cardboard is formed by an overlapping of the minus three sheets: an upper sheet, an intermediate sheet and a sheet inferior, subject to each other and presenting, each of them, to the minus a hole that defines an opening in the cardboard, of such so that the bottom sheet is in contact with the wrap filter, and the intermediate sheet is clipped so that a shutter, substantially the same thickness and has a hole, can slide between the bottom sheet and the top sheet between two extreme positions, of which one position makes the opening in the carton, while the other position seals said opening, such that the contour of the hole in the top sheet is corresponds substantially with the hole sliding zone of the shutter, while the thickness of the hole contour of the shutter is at least 0.5 millimeters.

The main feature of this mode of realization is linked to the accessibility of the shutter for allow its sliding, which is carried out by the opening of the top sheet, which covers the entire hole sliding area of the shutter.

In this way, considering the thickness of the perimeter of the shutter, the connection mouth with air communication, leaning on the edge of the hole of the shutter, noticeably perpendicular to the cardboard, can allow to slide the shutter by an appropriate movement of the cardboard with respect to this organ. The latter is fixed, so that the proper displacement of the receptacle, and therefore of the cardboard, can allow automatic opening or closing of the bag for this simple movement. This is particularly interesting when replacing the bag, since the closure, which It is also automatic, the bag prevents a certain amount of dust is projected into the atmosphere at the time of change of bag.

It is allowed, in this way, to change the bag to the dust of the vacuum cleaner without manipulation of said bag, when close it, on the other hand, automatically, when the removal of the vacuum receptacle, and this without having to remove the suction hose, while proposing a Economical and robust solution.

Advantageously, the extreme positions of the shutter are determined by the cooperation between stops made by a specific cut of the intermediate sheet, and some protruding spurs arranged on the shutter, which prevents use other external elements to the bag to limit the movements of the shutter, so that the thickness of the shutter and of the leaves allow a net arrest without degradation of the sliding of the shutter.

Advantageously, the shutter slides in a direction substantially parallel to one of the edges of the cardboard, what which simplifies, on the one hand, the making of cardboard and, on the other part, the relative movement between the cardboard and the mouth of connection with air communication that triggers the shutter.

Advantageously, the leaf holes inside and the shutter are circular and noticeably the same diameter, thus defining the opening of the cardboard. The shape circular adapts particularly well to a tight connection and not directional between the cardboard and the connection mouth with air communication

According to a preferred embodiment, the sheets are made of cardboard and have a thickness of at least 0.7 mm, so that the cardboard makes a small cost possible amount but requires a minimum thickness to guarantee expected interactions between the cardboard and the connection mouth With air communication.

According to an embodiment variant, the sheets They are made of plastic, which gives, in particular, a better Slip of the shutter between the two sheets.

In order to carry out an interaction strong between the end of the mouth and, in particular, the hole of the shutter, advantageously, the diameter of the end of the mouth is very slightly smaller than the diameter of the holes in the bottom sheet of the shutter.

Advantageously, the end of the mouth is in a conical way, which facilitates, in particular, the suppression of interaction between the cardboard and the connection mouth with air communication

The present invention will be better understood by the description that follows, with reference to the figures that are accompany, in which:

- Figures 1 and 2 are perspective views of the dust recovery receptacle according to the invention,

- Figure 3 is a front view of the receptacle, equipped with dust bag,

- Figures 4 and 5 are perspective views which show the preferred embodiment of the invention,

- Figure 6 is a perspective view and simplified of a dust bag according to an advantageous variant  of embodiment of the invention,

- Figure 7 is a top view that shows the cooperation of the carton of the bag arranged inside the frame or chassis of a vacuum cleaner, with a mouthpiece of suction, so that the receptacle has been simplified in your representation,

- Figure 8 is a schematic view and enlarged showing the principle of closing the bag,

- Figure 9 is a perspective view that Illustrates the principle of dust bag replacement,

- Figure 10 is a variant embodiment of the invention.

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According to a preferred mode of implementation of the invention, presented in Figures 1 to 5, a cardboard 60 of dust bag is placed inside a receptacle 70, such that said receptacle is guided to slide inside a housing arranged inside the frame or chassis of a vacuum cleaner. The bag attached to the cardboard has been omitted in order to make the representation and explanations more clear.

As depicted in Figure 1, the receptacle 70 is substantially parallelepipedic, and It has a face devoid of wall. This face, which is the face upper represented in Figure 1, corresponding to the part front of the receptacle when used, is intended to receive the cardboard 60 in such a way that the latter substantially occupies all the surface of this face devoid of wall, in order to close the receptacle, as can be clearly seen in Figure 3. To carry out this, the cardboard 60 is located on a plurality of spurs 72 coming out of the receptacle, coming, according to the exemplary embodiment of ribs 74 made in the Molding moment of the receptacle, so that the carton let the upper part of the side walls protrude receptacle.

On the opposite side of the face devoid of wall an air outlet is arranged by a plurality of openings 82, visible in Figure 4.

On the other hand, as represented in Figure 2, the receptacle 70 comprises a large handle or handle 80, arranged on the outside of one of the faces of said receptacle, so that this face corresponds to the face top of the receptacle when it is being used.

In Figure 2, and in the increased detail A that It also allows observing small clamping fingers 76 of the cardboard, such that these fingers are located above certain of the spurs 72 supporting the cardboard.

Figures 4 and 5 show the receptacle equipped with the cardboard according to the invention, at the time of Its use.

Thus, the vacuum 84 has a chassis 86 on which two large wheels have been mounted, in particular 88 in the rear and a small wheel in the front. In the front of the vacuum cleaner has a housing 90 large. This accommodation reproduces, with a narrow play, the outer dimensions of the receptacle 70, to exception of the handle, such that the receptacle is guided, at the time of its introduction into the vacuum cleaner, by walls that delimit said accommodation.

As can be clearly seen in the Figure 4, a connection mouth 92 protrudes inside of the housing 90. In this way, the cardboard, by its placement reconstitutes, in some way, the missing wall of the receptacle, It faces the mouth when the receptacle is inserted in the housing according to the arrangement represented in Figure 4. On the other hand, there is a recess or dislocation 78 arranged in the receptacle 70 in such a way that it allows the passage of the mouth 92 when the receptacle is inserted into the housing 90, in order to that the mouthpiece does not interact with cardboard 60. The Figure 7 illustrates the mode of cooperation between the cardboard and the connection mouth.

Indeed, according to this scheme of principle in the that the receptacle envelope has been omitted and in which the receptacle has been represented only by certain of its walls side, it is very visible that the connection mouth is located in the cardboard path housed inside the receptacle, and that displacement 78 allows the receptacle not to enter interaction or interference with the mouth. On the contrary, the mouthpiece is in interaction with the cardboard, which rests on the spurs 72. In this way, the arrangement of the mouthpiece forces to combine the cardboard in order to completely slide the receptacle inside your housing. The cardboard then enters friction type interaction with the mouth end connection 92.

In order for the combing to take place in the as effectively as possible, the ribs 74 are distributed over the periphery or internal contour of the receptacle.

According to a first mode of implementation of the invention, not shown, the cardboard comprises a simple hole for the connection of the mouth inside the bag. The interaction between the cardboard and the mouth ends then when the hole is facing the mouth, so that the elasticity of the cardboard allows the latter to recover its natural position, and the hole comes to surround the mouth of Connection. This arrangement allows an automatic connection of the cardboard on the mouth.

The reverse operation is performed when the receptacle is removed from its housing, so that the cardboard is disconnects from the mouth when it combats.

The handle 80 of the receptacle also has a wide edge in order to rest on the contour of the accommodation 90. In this way, the introduction and removal of receptacle is simple and easy, as the handle is arranged near the control buttons 94, 96 for the operation of the apparatus.

According to a second mode of implementation of the invention, as depicted in Figures 6 and 8, the carton 60 of a dust bag 40 is composed of three sheets of the same dimension: an upper sheet 2, an intermediate sheet 10 and a bottom sheet 30, on which a wrap has been arranged filter 42.

The upper sheet 2 comprises a hole oblong 4 as will be explained later.

The intermediate sheet 10 comprises a recess that It has recesses and is partially occupied by a shutter 20 of thickness substantially equal to that of sheet 10, and having a circular hole 26. Moreover, this shutter is trimmed in such a way that it has spurs that can cooperate with the recesses of the intermediate sheet 10. This cooperation allows to the shutter slide between two extreme positions.

Finally, the bottom sheet 30, in conjunction with the dust bag wrapper, comprises a circular hole 34 whose dimensions are substantially identical to those of the hole 26. An elastic membrane 32 is preferably arranged by for example, by gluing or gluing, under sheet 30, so that partially seal the hole in order to make a neck or sealing hose.

The leaves 2, 10 and 30 are solidarity, for for example, by gluing or stapling, so that the emptying of the sheet upper and holes 34 and 4 overlap.

In one of the extreme positions of the shutter 20, called the opening position and represented in Figure 1, hole 26 of shutter 20 coincides with holes 4 and 34, of such that the cardboard has an opening between the interior and the outside of the dust bag. Moreover, in this position, the contours that define the upper semi-perimeter of hole 26, coincide with the upper contour of the hole 4.

In the other extreme position of the shutter 20, denominated closing position and represented in Figure 9, the opening 26 has moved with the shutter 20, such that said shutter then covers the opening 34 formed by the juxtaposition of sheets 2 and 30. In the same way, the opening 26 of the shutter 20 is covered, on the side of the dust bag, by the lower sheet 30. Therefore, there is no longer a union with air communication between inside and outside of the bag for the dust

In this position, the contours that define noticeably the lower semi-perimeter of the hole 26, coincide with the bottom contour of hole 4.

The shape of the hole 4 corresponds, therefore, to the displacement of the hole 26 between the two extreme positions of the shutter 20.

Figure 8 shows the principle of cooperation between the dust bag and, in particular, its cardboard constitutive 60, and the suction mouth 92 of a duct for air 50.

The end of the suction mouth 92, in interaction with cardboard is preferably sectional circular, and its diameter is very slightly smaller than the diameter of holes 26 and 34.

As explained above, the cardboard will contact the connection with the connection mouth 92 and establishes a friction of the cardboard on the end of said mouthpiece. In this way, as the receptacle is introduced into the housing, the end of the mouth of connection 92 comes, first, to lean against sheet 2, to then enter hole 4 in interaction with said mouthpiece, this immediate interaction being if the shutter is It is in the closed position. Hole 26 of shutter 20 it allows the cardboard to undo its combing slightly, thereby that this hole then enters into interaction, on the part of its contour, with the mouth 92.

For this interaction, the displacement Supplementary carton drags the automatic sliding of the shutter 20 to the opening position of the shutter in which the hole 26 coincides with hole 34. The cardboard recovers then an almost rectilinear position, such that the mouthpiece then penetrates slightly inside the bag. The interaction between the mouth 92 and the cardboard is made then only for the 32, which guarantees a good tightness between inside and outside of the bag at the time of aspiration.

This cooperation is only possible if the sheets that constitute the cardboard, and particularly those that make up  The shutter is thick enough to support the interaction with the mouthpiece 92. Thus, according to the Proposed example, the sheets are made of cardboard and have a thickness of 0.8 mm

The camber and elasticity of the cardboard They also guarantee this cooperation. It is necessary, without However, the cardboard has a certain stiffness to maintain a Good mechanical strength

In the same way, when the receptacle, the cardboard is slightly eaten and comes out progressively of the device chassis at the same time as the receptacle, for sliding of the latter inside the housing 90. The mouthpiece thus interacts with hole 26, displacing in this way the shutter in order to close the bag. Upon arriving at the closing position, the interaction with the hole 26 and with the hole 4 ceases, so that the cardboard eats more, until its extraction of the chassis of the vacuum cleaner, by the extraction of the receptacle of your accommodation.

The end of the mouth is, advantageously, tapered, in order to facilitate the attachment or disengagement of the cardboard by the mouth at the time of insertion of the receptacle in his accommodation or his withdrawal from him. Can be contemplated also arrange different inclinations in the cone in order, above all, to favor the suppression of the interaction between the cardboard and the mouth at the time of removal of receptacle.

According to the proposed example, the maximum arrow due to the combing it does not exceed 2 mm. On the other hand, the scroll of the shutter between its two extreme positions is order of 40 mm. The height of displacement 78 is 8 mm.

In this way, for this variant of realization, the user has an opening and a closing automatic of your vacuum bag, respectively when insert and when you remove the receptacle, which contains the bag of vacuum, from the chassis of the vacuum.

In addition, the replacement of the bag is simple and clean. Indeed, having removed the receptacle from its housing by handle 80, a simple operation, the user He goes to a bin, while keeping the bag inside of the receptacle essentially by support of the cardboard on the spurs 72 and fingers 76, which prevent the cardboard from tipping easily. These fingers have been conceived, however, so that the bag can escape or get out of these fingers when it gets face down the receptacle placing the cardboard facing the floor, such as depicted in Figure 9. When performing this operation on a bin, due to the weight of the bag, when shaking also slightly the receptacle, the interaction between the cardboard and fingers 76 ceases and the bag falls into the bin without Direct manipulation of the bag by the user.

A new bag can then be placed to A new cleaning operation.

This introduction and this extraction of receptacle allow, therefore, in addition to simple manipulation of the receptacle for removing the vacuum bag, open and close, respectively, the shutter of the paperboard.

Variants of embodiment can be contemplated without depart from the scope of the present invention. So, in the second variant embodiment, being the interaction between the end of the mouthpiece and hole of the shutter linked only to its respective shapes, the delimitation of the hole of the top sheet must reproduce, at least, the form corresponding to the sliding area of the shutter hole, although it can be more widespread than the latter. It is even possible to contemplate that the top sheet has been reduced to thin areas whose function is only to keep the shutter applied against the bottom blade, and limit its slippage.

According to a variant embodiment, the mouthpiece serves only to close the cardboard at the time of removal of the bag. Cardboard opening by sliding the shutter up to its opening position, it can be carried out by support of the end 21 of the shutter, which protrudes from the cardboard when the shutter It is in the closed position, against the bottom of the housing of the bag, allowing, in this way, to push the shutter and, therefore, place it in the cardboard opening position.

In order to mitigate the possible defects of cardboard comb, it can be contemplated to have a 100 shutter pivoting by means of spurs 102 housed within ones openings 14 of receptacle 106. This shutter comprises two parts flat and rigid: the lower part 108 and the upper part 110, between which one of the cardboard edges is arranged 100

This arrangement then allows straightening, if it is necessary, the cardboard at the time of its placement inside the receptacle, in order to limit an eventual flaw in flatness.

The flat top 110 is advantageously pivoting on the shutter, in order to release the cardboard when it is given around the receptacle to drop the bag into a paper bin.

Claims (13)

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1. An electric vacuum cleaner (84) comprising a frame or chassis (86), inside which a motor-fan block is housed, as well as a removable waste recovery receptacle (70, 106), arranged vertically within a housing (90) of the chassis (86), such that the chassis comprises a connection mouth with air communication (92), which opens, at one of its ends, inside the housing, so that said receptacle ( 70, 106) is substantially parallelepipedic and inside there is a dust bag (40), said bag (40) comprising a cardboard (60, 100), made of a relatively rigid material and provided with an opening (34) which gives access to the volume of a filter wrap (42), fixed in the cardboard (60, 100), such that the receptacle (70, 106) comprises a handle or grip (80) for holding it for removal of the chassis (86), characterized in that: - the handle (80) is arranged in the face upper receptacle (70, 106), so that said face of the receptacle (70, 106) constitutes a part of the upper face of the vacuum cleaner (84), such that the receptacle (70, 106) is made directly accessible by the user, - the cardboard (60, 100) occupies one of the faces side of the receptacle (70, 106), - the end of the connection mouth with air communication (92) is slightly inserted in the cardboard opening (60, 100) or arranged face to face with said cardboard (60, 100) when the receptacle (70, 106) is arranged inside of accommodation (90). An electric vacuum cleaner (84) according to the preceding claim, characterized in that the receptacle (70, 106) is slidably disposed within the housing. An electric vacuum cleaner (84) according to one of the preceding claims, characterized in that the housing (90) of the receptacle is complementary to that of said receptacle (70, 106). An electric vacuum cleaner (84) according to one of the claims 2 and 3, characterized in that the end of the connection mouth with air communication (92) is of substantially circular section and is arranged in the sliding path of the receptacle (70, 106). An electric vacuum cleaner (84) according to one of claims 2 to 4, characterized in that the cardboard (60, 100) rests on projections (72) coming from the faces of the receptacle (70, 106) peripheral to the face occupied by cardboard (60, 100). An electric vacuum cleaner (84) according to one of claims 2 to 5, characterized in that the cardboard (60, 100) of the dust bag (40) is made of a relatively rigid material, such that said cardboard (60, 100) is formed by an overlap of at least three sheets: an upper sheet (2), an intermediate sheet (10) and a lower sheet (30), held between them and each one presenting minus a hole (4, 34) defining an opening in the cardboard (60, 100), so that the bottom sheet (30) is in contact with the filter wrap (42), the intermediate sheet (10) is cut out to that a shutter (20), substantially of the same thickness and having a hole (26), can slide between the lower sheet (30) and the upper sheet (2), between two extreme positions, such that one of its positions performs the opening in the cardboard (60, 100), while the other position seals said opening, such that the contour of the hole (4 ) of the top sheet (2) corresponds substantially to the area of the hole sliding
(26) of the shutter (20), and why the thickness of the contour of the hole (26) of the shutter (20) is at least 0.5 millimeters. An electric vacuum cleaner (84) according to the preceding claim, characterized in that the extreme positions of the shutter (20) are determined by the cooperation between stops made by a specific cut of the intermediate sheet (10), and spurs protruding arranged in the shutter (20). An electric vacuum cleaner (84) according to one of claims 6 and 7, characterized in that the shutter (20) slides in a direction substantially parallel to one of the edges of the cardboard (60, 100). 9. An electric vacuum cleaner (84) according to one of claims 6 to 8, characterized in that the holes (34, 26) of the bottom sheet (30) and of the shutter (20) are circular and substantially of the same diameter. 10. An electric vacuum cleaner (84) according to one of claims 6 to 9, characterized in that the sheets (2, 10, 30) are made of cardboard and have a thickness of at least 0.7 mm. 11. An electric vacuum cleaner (84) according to one of claims 6 to 9, characterized in that the sheets (2, 10, 30) are made of plastic. 12. An electric vacuum cleaner (84) according to one of claims 6 to 11, characterized in that the diameter of the end of the connection mouth with air communication (92) is very slightly smaller than the diameter of the holes (34, 26) of the lower leaf (30) and of the shutter (20). 13. An electric vacuum cleaner (84) according to one of claims 6 to 12, characterized in that the end of the connection mouth with air communication (92) is conical in shape.