ES2998585T3 - Vacuum cleaner nozzle equipped with a rear scraping rib - Google Patents

Abstract

The vacuum cleaner nozzle (2) comprises a base plate (6) provided with a lower face (7) and a suction inlet (8) opening onto the lower face (7), the base plate (6) comprising a rear scraper rib (11) intended for scraping a floor to be cleaned and projecting from the lower face (7), the lower face (7) comprising a rear sliding surface (13) and a front sliding surface (14) which are located on either side of the suction inlet (8) and which are substantially flat, the rear sliding surface (13) being adjacent to the rear scraper rib (11) and located at the rear of the rear scraper rib (11), the lower face (7) further comprising a rear chamfered surface (17) extending in extension of the rear sliding surface (13) and which is substantially flat, the rear chamfered surface (17) forming an angle of inclination comprised between 1° and 4° relative to the rear sliding surface (13). (Automatic translation with Google Translate, no legal value)

Description

DESCRIPTION

Vacuum cleaner nozzle with a rear scraping rib

Technical scope

The present invention relates to the field of vacuum cleaners equipped with a vacuum cleaner nozzle, also known as a suction head, which allows the vacuuming of dust and small particle residues present on a surface.

State of the Art

Vacuum cleaners equipped with a vacuum nozzle are well-known on the market, allowing them to clean surfaces by suctioning them up to remove dust and small particles from them. The surface to be vacuumed could be, for example, tiles, parquet, laminate, carpet, or a rug.

A vacuum cleaner nozzle traditionally comprises a connecting sleeve and a soleplate provided with a lower surface and a suction mouth communicating with the connecting sleeve and opening onto the lower surface of the soleplate. The lower surface of the soleplate is intended to be positioned adjacent to the surface to be vacuumed during use of the vacuum cleaner nozzle.

The sole of the vacuum cleaner nozzle may be provided, for example, with a suction mouth extending transversely to a direction of travel of the vacuum cleaner nozzle, with a front sliding surface and a rear sliding surface which are located on either side of the suction mouth and are flat.

As is known, the rear sliding surface is inclined with respect to the front sliding surface at a high angle of inclination, for example approximately 10°.

Such a vacuum nozzle configuration ensures satisfactory air supply to the vacuum nozzle to enable the suction of debris on smooth and hard floors.

However, such a vacuum cleaner nozzle configuration does not ensure optimal attachment of the vacuum cleaner nozzle to the floor to be cleaned, particularly when the latter is a soft floor, such as a carpet. Thus, a vacuum cleaner nozzle such as the one described above does not offer satisfactory suction performance for vacuuming soft floors.

Document EP 3181 029 A1 discloses a nozzle comprising a sole provided with a lower face and a suction mouth opening onto the lower face. The sole comprises a rear rib. The rear rib is located behind the suction mouth and protrudes from the lower face of the sole.

The lower face comprises a rear sliding surface and a front sliding surface, which are located on either side of the suction inlet and are substantially flat. The rear sliding surface adjoins the rear rib and is located behind it. The lower face comprises a beveled rear surface that extends in extension of the rear sliding surface and is substantially flat.

Summary of the invention

The present invention aims to remedy all or part of these drawbacks.

The basic technical problem of the invention consists in particular in providing a vacuum cleaner nozzle with a reliable and economical structure, while ensuring improved suction performance.

For this purpose, the present invention relates to a vacuum cleaner nozzle comprising a soleplate provided with a lower face and a suction mouth opening onto the lower face, the soleplate comprising a rear scraping rib intended to scrape a floor to be cleaned, the rear scraping rib being located behind the suction mouth and projecting from the lower face of the soleplate, the lower face comprising a rear sliding surface and a front sliding surface which are located on either side of the suction mouth and which are substantially flat, the rear sliding surface being located adjacent to the rear scraping rib, the lower face further comprising a beveled rear surface which extends in extension of the rear sliding surface and which is substantially flat. The present invention is characterized by a beveled rear surface forming an angle of inclination comprised between 1° and 4° with respect to the rear sliding surface.

Such a configuration of the lower face of the sole, and in particular the configuration of the rear sliding surface and the rear beveled surface, ensures an optimized attachment of the vacuum cleaner nozzle to the floor to be cleaned while ensuring a sufficient air supply to the vacuum cleaner nozzle to allow the suction of debris, and without deflating the vacuum cleaner nozzle and degrading the resistance to advance felt by the user when moving the vacuum cleaner nozzle over the floor to be cleaned.

In addition, the presence of the rear scraping rib ensures optimized scraping of soft floors to be cleaned.

Thus, the configuration of the underside of the vacuum cleaner nozzle sole according to the present invention gives the latter improved suction performance for both hard and soft floors.

The vacuum cleaner nozzle may also have one or more of the following characteristics, taken alone or in combination.

According to one embodiment of the invention, the rear scraping rib has a height of between 0.3 mm and 0.9 mm, and for example approximately 0.5 mm.

According to one embodiment of the invention, the rear scraping rib has a thickness of between 0.5 mm and 1.5 mm, for example approximately 1 mm.

According to one embodiment of the invention, the rear scraping rib extends in the vicinity of and along a rear edge of the suction mouth.

According to one embodiment of the invention, the rear scraping rib extends over the entire length of the rear edge of the suction mouth.

According to one embodiment of the invention, the rear scraping rib is located at the intersection of the lower face of the sole and a rear side wall of the suction mouth.

According to one embodiment of the invention, the rear scraping rib extends in continuity with the rear side wall of the suction mouth.

According to one embodiment of the invention, the rear scraping rib is substantially rectilinear and extends along an extension direction.

According to one embodiment of the invention, the rear scraping rib has a generally parallelepiped shape.

According to one embodiment of the invention, the rear scraping rib is rigid and is, for example, made of rigid plastic material.

According to one embodiment of the invention, the rear sliding surface has a width, measured in a direction transverse to the direction of extension of the rear scraping rib, which is between 4 mm and 10 mm, and which is for example approximately 8.5 mm.

According to an embodiment of the invention, the rear sliding surface and the rear beveled surface have a total width, measured in a direction transverse to the direction of extension of the rear scraping rib, which is between 15 mm and 25 mm, and which is for example approximately 20.5 mm.

According to one embodiment of the invention, the rear beveled surface has a width, measured in a direction transverse to the direction of extension of the rear scraping rib, which is between 10 mm and 15 mm, and which is for example approximately 12 mm.

According to one embodiment of the invention, the angle of inclination is approximately 2.7°.

According to an embodiment of the invention, the suction mouth extends along a main direction which is transverse to a direction of travel of the vacuum cleaner nozzle.

According to one embodiment of the invention, the rear sliding surface and the front sliding surface are substantially parallel.

According to one embodiment of the invention, the rear sliding surface and the front sliding surface are substantially coplanar.

According to an embodiment of the invention, the vacuum cleaner nozzle comprises at least one brush that can be moved between a lowered position in which the at least one brush is positioned protruding from the lower face of the sole, and a raised position in which the at least one brush is positioned away from the lower face of the sole.

According to one embodiment of the invention, the rear edge of the suction mouth is substantially parallel to the front edge of the suction mouth.

According to an embodiment of the invention, the front sliding surface extends from the front edge of the suction mouth.

According to one embodiment of the invention, the rear beveled surface extends to a rear edge of the sole.

According to one embodiment of the invention, the rear sliding surface comprises a rear edge that is substantially parallel to the direction of extension of the rear scraping rib. Advantageously, the rear edge of the rear sliding surface is substantially rectilinear.

According to one embodiment of the invention, the rear sliding surface comprises a leading edge that is substantially parallel to the direction of extension of the rear scraping rib. Advantageously, the leading edge of the rear sliding surface is substantially rectilinear.

According to one embodiment of the invention, the rear sliding surface extends from the rear scraping rib.

According to one embodiment of the invention, the rear sliding surface extends from a first lateral edge of the sole to a second lateral edge of the sole opposite the first lateral edge.

According to one embodiment of the invention, the rear beveled surface extends from the first lateral edge of the sole to the second lateral edge of the sole.

According to one embodiment of the invention, the front sliding surface extends from the first lateral edge of the sole to the second lateral edge of the sole.

According to one embodiment of the invention, the vacuum cleaner nozzle comprises moving wheels configured to roll on the floor to be cleaned.

According to an embodiment of the invention, the vacuum cleaner nozzle is configured such that the rear sliding surface and the front sliding surface are substantially horizontal when the moving wheels are in contact with the floor to be cleaned.

The present invention further relates to a domestic vacuum cleaner comprising a vacuum cleaner nozzle as previously described.

Brief description of the figures

The invention will be better understood with the aid of the following description with reference to the attached schematic drawings, which show, by way of non-limiting example, one embodiment of this vacuum cleaner nozzle. Figure 1 is a bottom perspective view of a vacuum cleaner nozzle according to the present invention. Figure 2 is a side view of the vacuum cleaner nozzle of Figure 1.

Figure 3 is a bottom perspective view of a sole of the vacuum cleaner nozzle of Figure 1. Figure 4 is a side view of the sole of Figure 3.

Figure 5 is a bottom view of the vacuum nozzle of Figure 1.

Detailed description

Figures 1 to 5 show a vacuum cleaner nozzle 2 comprising a connecting sleeve 3 to which one end of a rigid or flexible tube is connected, which is in turn connected to the vacuum cleaner's suction system (not shown). Various vacuum cleaner variants already exist on the market and can be used with the vacuum cleaner nozzle 2 according to the invention; these variants are known to those skilled in the art and are not detailed in this patent application.

The vacuum cleaner nozzle 2 further comprises an upper cover 4 and two travel wheels 5 mounted on the upper cover 4 and configured to roll over the floor to be cleaned. The two travel wheels 5 are advantageously each arranged on a respective side of the upper cover 4 and the connecting sleeve 3.

The connecting sleeve 3 is mounted in a rotatable connection with respect to the upper cover 4 along a transverse rotation axis X which advantageously corresponds to the rotation axis of the travel wheels 5. However, variants of the vacuum cleaner nozzle according to the invention could be provided with a slight displacement of the rotation axis of the travel wheels 5 downwards and/or backwards with respect to the transverse rotation axis X.

The vacuum cleaner nozzle 2 further comprises a sole 6, for example made of plastic material, which is fixed to the upper cover 4. The sole 6 is provided in particular with a lower face 7 and a suction mouth 8 opening into the lower face 7. The suction mouth 8 communicates with the connection sleeve 3 through a connecting duct (not visible in the figures) formed by the upper cover 4.

The suction mouth 8 extends in a main direction D1 and transversely to a direction of movement D2 of the suction nozzle 2. The suction mouth 8 comprises a front edge 8.1 and a rear edge 8.2 which are advantageously parallel to one another. Thus, the suction mouth 8 has an overall rectangular shape.

The sole 6 comprises a rear scraping rib 11 projecting from the lower face 7 of the sole 6 and intended to scrape a floor to be cleaned, and more particularly a soft floor (a carpet, a rug for example). The rear scraping rib 11 is rigid and is made, for example, of rigid plastic material. The rear scraping rib 11 is advantageously rectilinear and extends in an extension direction D1 that is parallel to the main direction D1 of the suction mouth 8. According to the embodiment shown in the figures, the rear scraping rib 11 has a generally parallelepiped shape.

The rear scraping rib 11 extends in the vicinity of and along the rear edge 8.2 of the suction mouth 8. Advantageously, the rear scraping rib 11 is located at the intersection of the lower face 7 of the sole 6 and a rear side wall 12 of the suction mouth 8, and extends in continuity with the rear side wall 12 of the suction mouth 8. Advantageously, the rear scraping rib 11 extends substantially over the entire length of the rear edge 8.2 of the suction mouth 8.

According to one embodiment of the invention, the rear scraping rib 11 has a height between 0.3 mm and 0.9 mm, and for example approximately 0.5 mm, and has a thickness between 0.5 mm and 1.5 mm, and for example approximately 1 mm.

The lower face 7 of the sole 6 further comprises a rear sliding surface 13 and a front sliding surface 14 which are located on either side of the suction mouth 8 and which are substantially flat. Advantageously, the rear sliding surface 13 extends from a first lateral edge 15 of the sole 6 to a second lateral edge 16 of the sole 6 opposite the first lateral edge 15, and the front sliding surface 14 also extends from the first lateral edge 15 of the sole 6 to the second lateral edge 16 of the sole 6.

According to the embodiment shown in the figures, the rear sliding surface 13 and the front sliding surface 14 are parallel and coplanar.

As shown more particularly in Figure 4, the front sliding surface 14 extends from the front edge 8.1 of the suction mouth 8, and the rear sliding surface 13 extends from the rear scraping rib 11 and is located behind the rear scraping rib 11. The rear sliding surface 13 comprises a rear edge 13.1 which is substantially rectilinear and which is substantially parallel to the direction of extension De of the rear scraping rib 11, and a front edge 13.2 which is substantially rectilinear and which is substantially parallel to the direction of extension De of the rear scraping rib 11.

According to an embodiment of the invention, the vacuum cleaner nozzle 2 is configured such that the rear sliding surface 13 and the front sliding surface 14 are substantially horizontal when the moving wheels 5 are in contact with the floor to be cleaned.

According to an embodiment of the invention, the rear sliding surface 13 has a width W1, measured in a direction transverse to the direction of extension De of the rear scraping rib 11, which is between 4 mm and 10 mm, and which is for example approximately 8.5 mm.

The lower face 7 of the sole 6 also comprises a rear bevelled surface 17 which is substantially flat and which extends in the extension of the rear sliding surface 13 and up to a rear edge of the sole 6. Advantageously, the rear bevelled surface 17 extends from the first lateral edge 15 of the sole 6 to the second lateral edge 16 of the sole 6.

The rear bevelled surface 17 is inclined with respect to the rear sliding surface 13, and therefore forms an angle of inclination between 1° and 4°, and for example approximately 2.7°, with respect to the rear sliding surface 13.

According to one embodiment of the invention, the rear beveled surface 17 has a width W2, measured in a direction transverse to the direction of extension of the rear scraping rib 11, which is between 10 mm and 15 mm, and which is for example approximately 12 mm. Advantageously, the rear sliding surface 13 and the rear beveled surface 17 have an overall width WT, measured in a direction transverse to the direction of extension of the rear scraping rib 11, which is between 15 mm and 25 mm, and which is for example approximately 20.5 mm.

The vacuum cleaner nozzle 2 further comprises two brushes 18, 19 which are located respectively on the front side and on the rear side of the sole 6, and which are movable between a lowered position in which the two brushes 18, 19 are located protruding from the underside 7 of the sole 6, and a raised position in which the two brushes 18, 19 are located withdrawn from the underside 7 of the sole 6. The two brushes 18, 19 can be mounted for example on a support piece (not visible in the figures) mounted movably, and for example slidably, on the sole 6.

Claims (13)

1. Vacuum cleaner nozzle (2) comprising a soleplate (6) provided with a lower face (7) and a suction mouth (8) opening onto the lower face (7), the soleplate (6) comprising a rear scraping rib (11) which is intended to scrape a floor to be cleaned, the rear scraping rib (11) being located behind the suction mouth (8) and projecting from the lower face (7) of the soleplate (6), the lower face (7) comprising a rear sliding surface (13) and a front sliding surface (14) which are located on either side of the suction mouth (8) and which are substantially flat, the rear sliding surface (13) being adjacent to the rear scraping rib (11) and being located behind the rear scraping rib (11), the lower face (7) further comprising a rear bevelled surface (17) extending in extension of the rear sliding surface (13) and is substantially flat, characterized in that the rear beveled surface (17) forms an angle of inclination between 1° and 4° with respect to the rear sliding surface (13). 2. Vacuum cleaner nozzle (2) according to claim 1, in which the rear scraping rib (11) has a height between 0.3 mm and 0.9 mm. 3. Vacuum cleaner nozzle (2) according to claim 1 or 2, in which the rear scraping rib (11) has a thickness between 0.5 mm and 1.5 mm. 4. Vacuum cleaner nozzle (2) according to any one of claims 1 to 3, in which the rear scraping rib (11) extends in the vicinity of and along a rear edge (8.2) of the suction mouth (8). 5. Vacuum cleaner nozzle (2) according to claim 4, in which the rear scraping rib (11) extends over the entire length of the rear edge (8.2) of the suction mouth (8). 6. Vacuum cleaner nozzle (2) according to any one of claims 1 to 5, in which the rear scraping rib (11) is substantially rectilinear and extends along an extension direction (De). 7. Vacuum cleaner nozzle (2) according to claim 6, in which the rear sliding surface (13) has a width (W1), measured in a direction transverse to the direction of extension (De) of the rear scraping rib (11), which is between 4 mm and 10 mm. 8. Vacuum cleaner nozzle (2) according to claim 6 or 7, in which the rear sliding surface (13) and the rear bevelled surface (17) have a total width (WT), measured in a direction transverse to the direction of extension (De) of the rear scraping rib (11), which is between 15 mm and 25 mm. 9. Vacuum cleaner nozzle (2) according to any one of claims 1 to 8, wherein the suction mouth (8) extends along a main direction (D1) which is transverse to a direction of travel (D2) of the vacuum cleaner nozzle (2). 10. Vacuum cleaner nozzle (2) according to any one of claims 1 to 9, in which the rear sliding surface (13) and the front sliding surface (14) are substantially parallel. 11. Vacuum cleaner nozzle (2) according to any one of claims 1 to 10, in which the rear sliding surface (13) and the front sliding surface (14) are substantially coplanar. 12. Vacuum cleaner nozzle (2) according to any one of claims 1 to 11, comprising at least one brush (18, 19) movable between a lowered position, in which the at least one brush (18, 19) is located protruding from the lower face (7) of the sole (6), and a raised position, in which the at least one brush (18, 19) is located removed from the lower face (7) of the sole (6). 13. Domestic vacuum cleaner comprising a vacuum cleaner nozzle (2) according to one of the preceding claims.