WO2002011595A1 - Head for a dust vacuum cleaner - Google Patents

Head for a dust vacuum cleaner Download PDF

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Publication number
WO2002011595A1
WO2002011595A1 PCT/ES2000/000298 ES0000298W WO0211595A1 WO 2002011595 A1 WO2002011595 A1 WO 2002011595A1 ES 0000298 W ES0000298 W ES 0000298W WO 0211595 A1 WO0211595 A1 WO 0211595A1
Authority
WO
WIPO (PCT)
Prior art keywords
head
open chamber
structural elements
central
lateral
Prior art date
Application number
PCT/ES2000/000298
Other languages
Spanish (es)
French (fr)
Inventor
Jorge Garcia Virgili
Lluis Trench Roca
Francisco Lopez Vizcaino
Original Assignee
Electrodomesticos Taurus, Sl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Electrodomesticos Taurus, Sl filed Critical Electrodomesticos Taurus, Sl
Priority to PCT/ES2000/000298 priority Critical patent/WO2002011595A1/en
Priority to AU2000264440A priority patent/AU2000264440A1/en
Priority to AT01963008T priority patent/ATE343955T1/en
Priority to ES01963008T priority patent/ES2275715T3/en
Priority to AU2001284063A priority patent/AU2001284063A1/en
Priority to MXPA03000932A priority patent/MXPA03000932A/en
Priority to DE60124266T priority patent/DE60124266T2/en
Priority to PCT/ES2001/000311 priority patent/WO2002011596A1/en
Priority to PT01963008T priority patent/PT1314388E/en
Priority to BR0113082-0A priority patent/BR0113082A/en
Priority to EP01963008A priority patent/EP1314388B1/en
Priority to US10/343,493 priority patent/US20040025289A1/en
Publication of WO2002011595A1 publication Critical patent/WO2002011595A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles

Definitions

  • the present invention relates in general to a head for dust suction apparatus, and more particularly to a head for dust suction apparatus provided with a suction front capable of adopting a variable geometry, suitable both for treating relatively wide and clear surfaces such as to reach corners and / or corners.
  • Heads have been known for a long time in the market for dust suction appliances, especially for domestic or semi-industrial use, consisting of a first structural, central element, which integrates an open-chamber part of the suction connected to a source of depression. through an appropriate conduction, which generally includes a section of rigid tube articulated connected to said central structural element, and which also serves to handle the head without bending down.
  • a second, elongated structural element, mechanically connected by its midpoint transversely to the first comprises another open chamber part, pneumatically connected with the first, whose other open chamber part partially closes when the head is applied on the surface to be treated by delimiting at least one straight suction front, transverse to the central body of the head.
  • the width of this suction front according to the power of the machine of the depression source, defines the capacity of the vacuum cleaner, since the wider it is said, the less consecutive parallel passes will have to be given to cover the same surface.
  • an objective of the present invention is to provide a head for a dust extraction apparatus having a suction front of variable geometry, capable of adopting a range of configurations between a straight front, transverse to the central body of the head and relatively wide, suitable for treating wide and clear surfaces, and a pointed front, forming an angle slightly lower than a straight, suitable for reaching corners and corners.
  • a head for dust suction apparatus of the type comprising open chamber suction means connected to a source of depression through at least an appropriate conduction, whose means of The open chamber is partially closed when the head is applied on the surface to be treated, defining at least one suction front.
  • said aspiration front which is at least one, comprises several portions susceptible to a relative position change with respect to each other, so that said aspiration front adopts a variable geometry.
  • that structural element that integrates said open chamber part connected to the source of depression is a central structural element, two other lateral structural elements being arranged symmetrically on the side and side of said central structural element , said mechanical connection of said lateral structural elements being made with said central structural element through an articulation with respect to an axis which, with the head in working position, is substantially normal to said surface and treated, maintaining said communication of the open chamber parts through said joint.
  • the aforementioned range of relative positions of the open chamber parts is obtained by the rotation of the lateral structural elements with respect to the central structural element, between a first position in which said open chamber parts are substantially aligned, delimiting a front of straight suction, and a second position in which the lateral open chamber parts are forming an angle slightly lower than a rectum, with the central open chamber part located at the vertex, delimiting a pointed suction front, suitable for reach corners and / or corners.
  • the head thus arranged is also provided with elastic means, such as tension springs connected respectively between the lateral structural elements and the central structural element, which tend to maintain the assembly in said first defining position of a straight suction front.
  • elastic means such as tension springs connected respectively between the lateral structural elements and the central structural element, which tend to maintain the assembly in said first defining position of a straight suction front.
  • means for blocking the rotation of the lateral structural elements with respect to the central structural element are provided keeping the assembly a fixed position, preferably in said first position, whose locking means are manually operable through an external control.
  • Fig. The is a bottom plan view of the head for dust suction apparatus of the present invention, with the side structural elements arranged such that the open chamber means are aligned, delimiting a straight suction front, transverse to the central structural element.
  • Fig. Ib is a bottom plan view of the head for suction apparatus of the
  • FIG. 2a and 2b are top plan views of the head of the invention in the situations of Figs. la and Ib, respectively suitable for treating a relatively wide and clear surface and for reaching corners and corners;
  • Fig. 3 is a partial, enlarged, cross-sectional view, taken along line III-III of Fig. la;
  • Figs. 4a and 4b are top plan views of the head of the invention in the situations of Figs. 2a and 2b, respectively, with an upper housing removed showing the operation of elastic means that tend to keep the assembly in the position of Fig. 2a, and of locking means for fixing the assembly in said position of Fig. 2nd;
  • FIG. 5a and 5b are detailed, enlarged views of an exemplary embodiment of the lower articulation zone of the structural and communication elements between the open chamber means, in the situations of Figs. la and Ib, respectively;
  • Figs. 6a and 6b are detailed, enlarged views of another embodiment of the lower articulation zone of the structural and communication elements between the open chamber means, in the situations of Figs. la and Ib, respectively;
  • Figs. 7a and 7b are detailed, enlarged views of yet another embodiment of the lower articulation zone of the structural and communication elements between the open chamber means, in the situations of Figs. la and Ib, respectively.
  • the head for dust suction apparatus of the present invention is, in general, of the type comprising open-chamber suction means connected to a source of depression (not shown) through at least an appropriate conduction, such as a rigid tube 23 generally extended by a flexible sleeve.
  • the open chamber means are partially closed when the head is applied on the surface to be treated, defining at least one suction front, as is conventional in the art of the sector.
  • said open chamber means comprise several open chamber parts 10a, 10b, 10c integrated in several structural elements 12a, 12b, 12c mechanically connected to each other in a movable manner, keeping said open chamber parts 10a, 10b, 10c in mutual communication in a desired range of relative positions, at least one of said open chamber parts 10c being connected to said source of depression through said tube 23, and together constituting a variable geometric configuration structure that, when applied on the surface to be treated, delimits an aspiration front of also variable geometry.
  • that structural element that integrates said open chamber part 10c connected to the source of depression is a central structural element 12c, and two other lateral structural elements 12a, 12b, are arranged symmetrically to the side and side of said central structural element 12c.
  • the mechanical connection of said lateral structural elements 12a, 12b with said central structural element 12c is carried out through an articulation 13 with respect to an axis which, with the head in working position, is substantially normal to said surface to be treated.
  • the width Al of the aspiration front of the head disposed in said first position is substantially greater (of the order of 20% greater) than the width A2 of the suction head of the head disposed in said second position.
  • the head comprises elastic means that tend to keep the assembly in said first position, the structural elements being laterals 12a, 12b capable of being plagued independently towards the second position under the influence of an external force.
  • the head when a relatively wide and clear surface is being treated, such as the central area of a room, the head is held in the first position, while, when pressed against a corner, the head adopts only the second position, recovering the first position once again removed from the corner.
  • a relatively wide and clear surface such as the central area of a room
  • the head when pressed against a corner, the head adopts only the second position, recovering the first position once again removed from the corner.
  • it can occur when the path of a single lateral structural element is interfered, for example, by a leg of a piece of furniture, in which case only this lateral structural element will be momentarily folded to then recover its aligned position.
  • 4a and 4b are shown such elastic means in the form of tension springs line ia, 11b respectively connected between levers 24a, 24b respectively connected to the inner ends of the lateral structural elements 12a, 12b and anchor points 25a, 25b in the central structural element 12c.
  • Levers 24a and 24b are at different levels and have different lengths in order not to interfere with each other in their trajectories.
  • the head comprises means for blocking the rotation of the lateral structural elements 12a, 12b with respect to the central structural element 12c, keeping the assembly fixed in said first position, whose blocking means comprise a slide 9a, shown in line of strokes in Fig. 4a, manually operable through an external control 9, shown in Figs. 2a and 2b.
  • the said slide 9a is capable of adopting a locking position in which it is interposed between two stop portions 26a, 26b of the respective levers 24a and 24b, when the assembly is in the first position, preventing the rotation of the structural elements laterals 12a, 12b, or of withdrawing from said blocking position allowing their rotation.
  • the levers 24a and 24b also incorporate turn limit portions 27a, 27b, and 28a, 28b, to limit the rotation of the corresponding lateral structural elements 12a, 12b respectively in the first and second positions.
  • each of said lateral open chamber parts 10a, 10b, corresponding to each of said lateral structural elements 12a, 12b comprises a longitudinal groove 16 having a first end 16a communicating, in any of said relative positions desired, through said joint 13, said opening 14 of the central open chamber part 10c being connected to the source of depression through the central structural element 12c.
  • said longitudinal groove 16 of each of said lateral structural elements 12a, 12b has a second end 16b that ends at a lateral end, distal of the joint 13, of the corresponding lateral structural element 12a, 12b.
  • the grooves 16 decrease in width and depth as they move away from the joint 13 and are flanked, on the side opposite the suction front, by a section of protruding lip 30, of flexible and elastic material, such as rubber, which prevents a flow towards the open chamber parts 10a, 10b, 10c from said side opposite the suction front.
  • the central opening 14 may also be partially flanked by said lip 30.
  • means, possibly elastic, such as groups of bristles, may be arranged to partially restrict the incoming air flow .
  • a bead 35 of elastic material intended to protect said parts from possible bumps or scratches due to use.
  • the structural elements 12a, 12b, 12c comprise respective bottom surfaces, mutually coplanar, in which the corresponding longitudinal grooves 16 and the opening 14 are opened, being provided, from said lower surfaces, orientable wheels 20 that maintain said mutually coplanar lower surfaces substantially parallel to said surface to be treated and at a predetermined height thereof, so that the head is easily movable on the surface to be treated when applied in operation on the same.
  • Each of said geared wheels 20 comprises a cylindrical part 31 rotatably mounted with respect to a normal axis to said mutually coplanar bottom surfaces and within corresponding cylindrical holes 36 provided in structural elements 12a, 12b and 12c.
  • the cylindrical part 31 is held centrally by means of a screw 32, and in a eccentric position it is mounted a small rotating wheel 33 with respect to an axis 34 parallel to said lower surfaces and retained in said cylindrical part 31 which only protrudes a predetermined portion of said wheel 33. Due to said eccentricity of position of the wheel 33 with respect to the axis of rotation of the cylindrical part 31, said wheel 33 tends to be oriented in the direction towards which the head is pushed.
  • the head of the invention comprises means (not shown) for regulating the distance of said protruding portion of said steerable wheels 20, or other contact members, from said lower surfaces, thereby regulating said predetermined height at least between two different levels, suitable for surfaces to deal with different characteristics.
  • a hard and smooth floor requires a lower height of the open chamber means than a fluffy surface, such as a carpet or carpet.
  • the structural elements 12a, 12b, 12c comprise hollow bodies each formed by at least two pieces that can be fixed and fastened together by means of screws, obtained by injection molding of a plastic material, a housing being provided.
  • upper 21 associated with the central structural element 12c to cover at least the articulation 13 said elastic means, such as the tension springs l, 11b, and a large part of the lateral structural elements 12a, 12b when they are in said second position .
  • Said articulated coupling 22 of the central open chamber part 10c with said rigid tube 23 emerges through the upper housing 21.
  • the central structural element 12c in addition to the said hollow constitutive portion of the chamber part Open central 10c, it has lateral extensions intended to completely close the upper housing 21 from the bottom.
  • said central structural element 12c forms side cavities 29 intended to partially receive the lateral structural elements 12a, 12b when they adopt said second folded position.
  • said joint 13 comprises coaxial bushing portions 17a, 17b, 17c, respectively, of the structural elements 12a, 12b, 12c, whose bushing portions 17a, 17b, 17c have cylindrical walls capable of tightly rotating the one over the other.
  • That portion of bushing 17c integral with the central structural element 12c is located in the innermost position of the three, and the opening 14 is arranged through an interior space of said bushing portion 17c, said communication being made of the lateral open chamber parts 10a, 10b with the central open chamber part 10c through respective recesses 18a, 18b, 18c of said cylindrical walls, whose recesses 18a, 18b, 18c coincide with each other, allowing at least one flow passage therethrough, in all the relative positions of the structural elements 12a, 12b, 12c comprised between said first and said second position.
  • Figs. 6a, 6b shows one of the embodiment example of the joint 13 that a variant of the one described in relation to the previous Figs. 5a and b.
  • said cylindrical walls include other interruptions 19a, 19b, 19c that coincide with each other allowing at least one flow passage through it between the opening 14 and said vertex of the suction front , at least in said second position of the structural elements 12a, 12b, 12c, shown in Fig. 6b, so that the suction of the dust or other filth that tends to accumulate in the corners and corners is facilitated, as illustrated by the situation of Fig. 2b.
  • Figs. 7a and 7b shows yet another variant of the execution of the joint 13.
  • the bushing portion 17c integral with the central structural element 12c is in the outermost position of the three, the opening 14 being arranged through a space in the form of an inner annular sector of the bushing portion 17c itself (illustrated example) or through a space between the bushing portion 17c and one of the bushing portions 17a, 17b, respectively connected to the lateral structural elements 12a, 12b.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

The invention relates to a head for a dust vacuum cleaner comprising open chamber vacuum means connected to a vacuum source by means of an appropriate conduit, said open chamber means being partly closed when the head is applied on the surface to be treated and defining at least one vacuum front. Said open chamber means comprise several open chamber parts (10a, 10b, 10c) that are built into several structural elements (12a, 12b, 12c) which are mechanically and movably connected to one another. Said open chamber parts (10a, 10b, 10c) communicate mutually within a desired range of relative positions, at least one of said open chamber parts (10c) being connected to said vacuum source. The entire assembly has a variable geometric configuration which, when applied on the surface to be treated, defines the above-mentioned vacuum front which also has a variable configuration.

Description

CABEZALPARAAPARATO ASPIRADORDEPOLVO ASPIRADORDEPOLVO HEAD
Ámbito de la invenciónField of the invention
La presente invención concierne en general a un cabezal para aparato aspirador de polvo, y más en particular a un cabezal para aparato aspirador de polvo provisto de un frente de aspiración susceptible de adoptar una geometría variable, apta tanto para tratar superficies relativamente amplias y despejadas como para llegar a esquinas y/o rincones. Antecedentes técnicosThe present invention relates in general to a head for dust suction apparatus, and more particularly to a head for dust suction apparatus provided with a suction front capable of adopting a variable geometry, suitable both for treating relatively wide and clear surfaces such as to reach corners and / or corners. Technical background
Son conocidos desde hace tiempo en el mercado cabezales para aparatos aspiradores de polvo, especialmente de uso doméstico o semi-industrial, constituidos por un primer elemento estructural, central, que integra de una parte de cámara abierta de aspiración conectada a una fuente de depresión a través de una conducción apropiada, que generalmente incluye un tramo de tubo rígido conectado articuladamente a dicho elemento estructural central, y que sirve además para el manejo del cabezal sin necesidad de agacharse. Un segundo elemento estructural, alargado, conectado mecánicamente por su punto medio transversalmente al primero, comprende otra parte de cámara abierta, conectada neumáticamente con la primera, cuya otra parte de cámara abierta se cierra parcialmente al ser aplicado el cabezal sobre la superficie a tratar delimitando al menos un frente de aspiración recto, transversal al cuerpo central del cabezal. La anchura de este frente de aspiración, de acuerdo con la potencia de la máquina de la fuente de depresión, define la capacidad del aspirador, puesto que cuanto más ancho sea dicho frente menos pasadas paralelas consecutivas habrá que dar para cubrir una misma superficie.Heads have been known for a long time in the market for dust suction appliances, especially for domestic or semi-industrial use, consisting of a first structural, central element, which integrates an open-chamber part of the suction connected to a source of depression. through an appropriate conduction, which generally includes a section of rigid tube articulated connected to said central structural element, and which also serves to handle the head without bending down. A second, elongated structural element, mechanically connected by its midpoint transversely to the first, comprises another open chamber part, pneumatically connected with the first, whose other open chamber part partially closes when the head is applied on the surface to be treated by delimiting at least one straight suction front, transverse to the central body of the head. The width of this suction front, according to the power of the machine of the depression source, defines the capacity of the vacuum cleaner, since the wider it is said, the less consecutive parallel passes will have to be given to cover the same surface.
Sin embargo, aunque un cabezal con un frente de aspiración ancho es útil en superficies relativamente amplias y despejadas presenta serios inconvenientes cuando la superficie a tratar incluye esquinas y/o rincones, como por ejemplo las esquinas formadas por dos paredes en un rincón de una habitación, o rincones escondidos debajo de los* muebles.However, although a head with a wide suction front is useful on relatively wide and clear surfaces, it presents serious inconveniences when the surface to be treated includes corners and / or corners, such as the corners formed by two walls in a corner of a room , or hidden corners under the * furniture.
Se han realizado intentos para paliar estos inconvenientes aportando un juego de cabezales intercambiables para un aspirador, de manera que además del citado cabezal con un frente de aspiración ancho se pone a disposición otros cabezales con frentes de aspiración más estrechos o configurados según diferentes formas adaptadas a distintos rincones o esquinas. Sin embargo, esto obliga a estar cambiando continuamente los cabezales, aparte de la molestia que representa tener que guardar una multitud de pequeños elementos separados junto con el aspirador.Attempts have been made to alleviate these inconveniences by providing a set of interchangeable heads for a vacuum cleaner, so that in addition to the aforementioned head with a wide suction front, other heads with narrower aspiration fronts or configured according to different shapes adapted to different corners or corners. However, this forces to be continuously changing the Heads, apart from the inconvenience of having to store a multitude of small separate elements together with the vacuum cleaner.
También se conoce en el mercado una aproximación a la solución del referido problema consistente en dotar un aspirador de un único cabezal provisto de un frente de aspiración relativamente largo configurado en punta, formando un ángulo aproximadamente recto, de manera que tal cabezal es apto para llegar a rincones y esquinas del tipo descrito. Sin embargo, este cabezal presenta el inconveniente de que, aún teniendo el citado frente de aspiración relativamente largo, presenta siempre una anchura real del frente de aspiración mucho menor por el hecho de estar éste doblado en ángulo recto. Así, para cubrir una determinada superficie a tratar, son necesarias un mayor número de pasadas con un frente de aspiración doblado en punta que con un frente de igual longitud pero de configuración recta, transversal a la dirección de las pasadas. Esto significa, además, que durante la utilización de dicho cabezal configurado en punta para tratar una superficie amplia y despejada se desperdicia parte de la potencia de la máquina, con un consiguiente incremento en el gasto energético.An approach to the solution of the said problem is also known in the market, consisting of providing a single head vacuum cleaner provided with a relatively long suction front configured at the tip, forming an approximately right angle, so that such head is apt to reach to corners and corners of the type described. However, this head has the disadvantage that, even having the aforementioned relatively long suction front, it always has a real width of the suction front much smaller due to the fact that it is bent at right angles. Thus, to cover a certain surface to be treated, a greater number of passes are necessary with a suction front folded at a point than with a front of equal length but of a straight configuration, transverse to the direction of the passes. This also means that during the use of said spindle configured to treat a wide and clear surface, part of the power of the machine is wasted, with a consequent increase in energy expenditure.
Por consiguiente, un objetivo de la presente invención es el de aportar un cabezal para aparato aspirador de polvo que presente un frente de aspiración de geometría variable, susceptible de adoptar una gama de configuraciones comprendidas entre un frente recto, transversal al cuerpo central del cabezal y relativamente ancho, apto para tratar superficies amplias y despejadas, y un frente en punta, formando un ángulo ligeramente inferior a un recto, apto para llegar a esquinas y rincones. Breve exposición de la invenciónAccordingly, an objective of the present invention is to provide a head for a dust extraction apparatus having a suction front of variable geometry, capable of adopting a range of configurations between a straight front, transverse to the central body of the head and relatively wide, suitable for treating wide and clear surfaces, and a pointed front, forming an angle slightly lower than a straight, suitable for reaching corners and corners. Brief exposition of the invention
El anterior objetivo se alcanza, de acuerdo con la presente invención, aportando un cabezal para aparato aspirador de polvo del tipo que comprende unos medios de cámara abierta de aspiración conectados a una fuente de depresión a través de al menos una conducción apropiada, cuyos medios de cámara abierta se cierran parcialmente al ser aplicado el cabezal sobre la superficie a tratar delimitando al menos un frente de aspiración. La característica esencial consiste en que dicho frente de aspiración, que es al menos uno, comprende varias porciones susceptibles de un cambio de posición relativa entre sí, de manera que dicho frente de aspiración adopta una geometría variable.The foregoing objective is achieved, in accordance with the present invention, by providing a head for dust suction apparatus of the type comprising open chamber suction means connected to a source of depression through at least an appropriate conduction, whose means of The open chamber is partially closed when the head is applied on the surface to be treated, defining at least one suction front. The essential feature is that said aspiration front, which is at least one, comprises several portions susceptible to a relative position change with respect to each other, so that said aspiration front adopts a variable geometry.
Esto se consigue, en esencia, repartiendo los citados medios de cámara abierta en varias partes de cámara abierta integradas en varios elementos estructurales conectados mecánicamente entre sí de manera movible, manteniéndose dichas partes de cámara abierta en mutua comunicación en una gama de posiciones relativas deseada, estando al menos una de dichas partes de cámara abierta conectada a dicha fuente de depresión, y constituyendo en conjunto una estructura de configuración geométrica variable que al ser aplicada sobre la superficie a tratar delimita el citado frente de aspiración, que es al menos uno.This is achieved, in essence, by distributing said open chamber means into several open chamber parts integrated into several structural elements mechanically connected to each other in a movable manner, said chamber parts being maintained. open in mutual communication in a desired range of relative positions, at least one of said open chamber parts being connected to said source of depression, and jointly constituting a structure of variable geometric configuration that when applied on the surface to be treated delimits the cited suction front, which is at least one.
Según una forma de realización preferida de la invención, aquel elemento estructural que integra la citada parte de cámara abierta conectada a la fuente de depresión es un elemento estructural central, estando otros dos elementos estructurales laterales dispuestos simétricamente a lado y lado de dicho elemento estructural central, realizándose la citada conexión mecánica de dichos elementos estructurales laterales con dicho elemento estructural central a través de una articulación respecto a un eje que, con el cabezal en posición de trabajo, es substancialmente normal a dicha superficie e tratar, manteniéndose la citada comunicación de las partes de cámara abierta a través de dicha articulación. Así, la citada gama de posiciones relativas de las partes de cámara abierta se obtiene por la rotación de los elementos estructurales laterales respecto al elemento estructural central, entre una primera posición en la que dichas partes de cámara abierta están substancialmente alineadas, delimitando un frente de aspiración recto, y una segunda posición en la que las partes de cámara abierta laterales están formando entre sí un ángulo ligeramente inferior a un recto, con la parte de cámara abierta central situada en el vértice, delimitando un frente de aspiración en punta, apto para llegar a esquinas y/o rincones.According to a preferred embodiment of the invention, that structural element that integrates said open chamber part connected to the source of depression is a central structural element, two other lateral structural elements being arranged symmetrically on the side and side of said central structural element , said mechanical connection of said lateral structural elements being made with said central structural element through an articulation with respect to an axis which, with the head in working position, is substantially normal to said surface and treated, maintaining said communication of the open chamber parts through said joint. Thus, the aforementioned range of relative positions of the open chamber parts is obtained by the rotation of the lateral structural elements with respect to the central structural element, between a first position in which said open chamber parts are substantially aligned, delimiting a front of straight suction, and a second position in which the lateral open chamber parts are forming an angle slightly lower than a rectum, with the central open chamber part located at the vertex, delimiting a pointed suction front, suitable for reach corners and / or corners.
El cabezal así dispuesto está dotado además de unos medios elásticos, tales como unos muelles de tracción conectados respectivamente entre los elementos estructurales laterales y el elemento estructural central, que tienden a mantener el conjunto en la citada primera posición definitoria de un frente de aspiración recto. Para evitar el plegado indeseado de dicho frente recto, en especial cuando se tratan superficies muy rugosas o con una fuerza de aspiración muy fuerte, se han previsto unos medios de bloqueo del giro de los elementos estructurales laterales respecto al elemento estructural central manteniendo el conjunto una posición fija, preferiblemente en la citada primera posición, cuyos medios de bloqueo son accionables manualmente a través de un mando exterior. Breve descripción de los dibujosThe head thus arranged is also provided with elastic means, such as tension springs connected respectively between the lateral structural elements and the central structural element, which tend to maintain the assembly in said first defining position of a straight suction front. In order to avoid unwanted folding of said straight front, especially when very rough surfaces are treated or with a very strong suction force, means for blocking the rotation of the lateral structural elements with respect to the central structural element are provided keeping the assembly a fixed position, preferably in said first position, whose locking means are manually operable through an external control. Brief description of the drawings
Estas y otras características se comprenderán mejor a partir de la siguiente descripción detallada de un ejemplo de realización preferido de la invención, el cual se aporta con un propósito meramente ilustrativo y no limitativo, con referencias a los dibujos adjuntos, en los que: la Fig. la es una vista inferior en planta del cabezal para aparato aspirador de polvo de la presente invención, con los elementos estructurales laterales dispuestos de tal manera que los medios de cámara abierta están alineados, delimitando un frente de aspiración recto, transversal al elemento estructural central; la Fig. Ib es una vista inferior en planta del cabezal para aparato aspirador de laThese and other features will be better understood from the following detailed description of a preferred embodiment of the invention, which is provided for purely illustrative and non-limiting purposes, with references to the accompanying drawings, in which: Fig. The is a bottom plan view of the head for dust suction apparatus of the present invention, with the side structural elements arranged such that the open chamber means are aligned, delimiting a straight suction front, transverse to the central structural element. ; Fig. Ib is a bottom plan view of the head for suction apparatus of the
Fig. la, con los elementos estructurales laterales plegados, de tal manera que los medios de cámara abierta delimitan un frente de aspiración en punta; las Figs. 2a y 2b son vistas superiores en planta del cabezal de la invención en las situaciones de las Figs. la y Ib, respectivamente aptas para tratar una superficie relativamente amplia y despejada y para llegar a esquinas y rincones; la Fig. 3 es una vista parcial, ampliada, en sección transversal, tomada a lo largo de la línea III-III de la Fig. la; las Figs. 4a y 4b son vistas superiores en planta del cabezal de la invención en las situaciones de las Figs. 2a y 2b, respectivamente, con una carcasa superior retirada mostrando el funcionamiento de unos medios elásticos que tienden a mantener el conjunto en la posición de la Fig. 2a, y de unos medios de bloqueo para fijar el conjunto en dicha posición de la Fig. 2a; las Figs. 5a y 5b son vistas en detalle, ampliadas, de un ejemplo de realización de la zona inferior de articulación de los elementos estructurales y de comunicación entre los medios de cámara abierta, en las situaciones de las Figs. la y Ib, respectivamente; las Figs. 6a y 6b son vistas en detalle, ampliadas, de otro ejemplo de realización de la zona inferior de articulación de los elementos estructurales y de comunicación entre los medios de cámara abierta, en las situaciones de las Figs. la y Ib, respectivamente; y las Figs. 7a y 7b son vistas en detalle, ampliadas, de todavía otro ejemplo de realización de la zona inferior de articulación de los elementos estructurales y de comunicación entre los medios de cámara abierta, en las situaciones de las Figs. la y Ib, respectivamente. Descripción detallada de los ejemplos de realización preferidosFig. The, with the folded side structural elements, such that the open chamber means delimit a pointed suction front; Figs. 2a and 2b are top plan views of the head of the invention in the situations of Figs. la and Ib, respectively suitable for treating a relatively wide and clear surface and for reaching corners and corners; Fig. 3 is a partial, enlarged, cross-sectional view, taken along line III-III of Fig. la; Figs. 4a and 4b are top plan views of the head of the invention in the situations of Figs. 2a and 2b, respectively, with an upper housing removed showing the operation of elastic means that tend to keep the assembly in the position of Fig. 2a, and of locking means for fixing the assembly in said position of Fig. 2nd; Figs. 5a and 5b are detailed, enlarged views of an exemplary embodiment of the lower articulation zone of the structural and communication elements between the open chamber means, in the situations of Figs. la and Ib, respectively; Figs. 6a and 6b are detailed, enlarged views of another embodiment of the lower articulation zone of the structural and communication elements between the open chamber means, in the situations of Figs. la and Ib, respectively; and Figs. 7a and 7b are detailed, enlarged views of yet another embodiment of the lower articulation zone of the structural and communication elements between the open chamber means, in the situations of Figs. la and Ib, respectively. Detailed description of the preferred embodiments
Haciendo referencia en primer lugar a las Figs. la y Ib, el cabezal para aparato aspirador de polvo de la presente invención es, en general, del tipo que comprende unos medios de cámara abierta de aspiración conectados a una fuente de depresión (no mostrada) a través de al menos una conducción apropiada, tal como un tubo rígido 23 generalmente prolongado por una manga flexible. Los medios de cámara abierta se cierran parcialmente al ser aplicado el cabezal sobre la superficie a tratar, delimitando al menos un frente de aspiración, tal como es convencional en la técnica del sector.Referring first to Figs. la and Ib, the head for dust suction apparatus of the present invention is, in general, of the type comprising open-chamber suction means connected to a source of depression (not shown) through at least an appropriate conduction, such as a rigid tube 23 generally extended by a flexible sleeve. The open chamber means are partially closed when the head is applied on the surface to be treated, defining at least one suction front, as is conventional in the art of the sector.
La característica esencial del cabezal de acuerdo con la presente invención reside en que los citados medios de cámara abierta comprenden varias partes de cámara abierta 10a, 10b, 10c integradas en varios elementos estructurales 12a, 12b, 12c conectados mecánicamente entre sí de manera movible, manteniéndose dichas partes de cámara abierta 10a, 10b, 10c en mutua comunicación en una gama de posiciones relativas deseada, estando al menos una de dichas partes de cámara abierta 10c conectada a dicha fuente de depresión a través del citado tubo 23, y constituyendo en conjunto una estructura de configuración geométrica variable que, al ser aplicada sobre la superficie a tratar, delimita un frente de aspiración de geometría también variable.The essential feature of the head according to the present invention is that said open chamber means comprise several open chamber parts 10a, 10b, 10c integrated in several structural elements 12a, 12b, 12c mechanically connected to each other in a movable manner, keeping said open chamber parts 10a, 10b, 10c in mutual communication in a desired range of relative positions, at least one of said open chamber parts 10c being connected to said source of depression through said tube 23, and together constituting a variable geometric configuration structure that, when applied on the surface to be treated, delimits an aspiration front of also variable geometry.
En el ejemplo de realización mostrado en las figuras, aquel elemento estructural que integra la citada parte de cámara abierta 10c conectada a la fuente de depresión es un elemento estructural central 12c, y otros dos elementos estructurales laterales 12a, 12b , están dispuestos simétricamente a lado y lado de dicho elemento estructural central 12c. La conexión mecánica de dichos elementos estructurales laterales 12a, 12b con el citado elemento estructural central 12c se realiza a través de una articulación 13 respecto a un eje que, con el cabezal en posición de trabajo, es substancialmente normal a dicha superficie e tratar. En virtud de unas especiales configuraciones, que serán descritas en detalle más abajo con relación a las Figs. 5a, 5b a 7a, 7b, la citada comunicación de las partes de cámara abierta laterales 10a y 10b con la parte de cámara abierta central 10c se mantiene a través de dicha articulación 13 sea cual sea la posición relativa entre los elementos estructurales 12a, 12b y 12c. Así, la citada gama de posiciones relativas que pueden adoptar las partes de cámara abierta 10a, 10b, 10c se obtiene por la rotación relativa de los elementos estructurales laterales 12a, 12b respecto al elemento estructural central 12c. En el ejemplo de realización ilustrado, el conjunto puede variar entre una primera posición, mostrada en las Figs. la, 2a, 4a, 5a, 6a, y 7a, en la que los elementos estructurales 12a, 12b y 12c están dispuestos de tal manera que las partes de cámara abierta 10a, 10b, 10c quedan substancialmente alineadas, delimitando un frente de aspiración recto, y una segunda posición, mostrada en las Figs. Ib, 2b, 4b, 5b, 6b, y 7b, en la que los elementos estructurales 12a, 12b y 12c están dispuestos de tal manera que las partes de cámara abierta laterales 10a, 10b están formando entre sí un ángulo ligeramente inferior a un recto, con una abertura 14 de la parte de cámara abierta central 10c en el vértice, delimitando un frente de aspiración en punta, apto para tratar esquinas y/o rincones, tal como se muestra especialmente en la Fig. 2b.In the exemplary embodiment shown in the figures, that structural element that integrates said open chamber part 10c connected to the source of depression is a central structural element 12c, and two other lateral structural elements 12a, 12b, are arranged symmetrically to the side and side of said central structural element 12c. The mechanical connection of said lateral structural elements 12a, 12b with said central structural element 12c is carried out through an articulation 13 with respect to an axis which, with the head in working position, is substantially normal to said surface to be treated. By virtue of special configurations, which will be described in detail below in relation to Figs. 5a, 5b to 7a, 7b, said communication of the lateral open chamber parts 10a and 10b with the central open chamber part 10c is maintained through said articulation 13 regardless of the relative position between the structural elements 12a, 12b and 12c. Thus, the aforementioned range of relative positions that the open chamber parts 10a, 10b, 10c can adopt is obtained by the relative rotation of the lateral structural elements 12a, 12b with respect to the central structural element 12c. In the illustrated embodiment, the assembly may vary between a first position, shown in Figs. la, 2a, 4a, 5a, 6a, and 7a, in which the structural elements 12a, 12b and 12c are arranged such that the open chamber parts 10a, 10b, 10c are substantially aligned, delimiting a straight suction front , and a second position, shown in Figs. Ib, 2b, 4b, 5b, 6b, and 7b, in which the structural elements 12a, 12b and 12c are arranged such that the lateral open chamber parts 10a, 10b are forming at each other an angle slightly less than a straight , with an opening 14 of the central open chamber part 10c at the vertex, delimiting a pointed suction front, suitable for treating corners and / or corners, as shown especially in Fig. 2b.
Hay que destacar que, aunque la longitud del frente de aspiración se mantiene constante en cualquiera de las posiciones posibles, la anchura Al del frente de aspiración del cabezal dispuesto en la citada primera posición es substancialmente mayor (del orden de un 20% mayor) que la anchura A2 del frente de aspiración del cabezal dispuesto en dicha segunda posición. Esto permite optimizar al máximo la potencia de la máquina de la fuente de depresión sin necesidad de cambiar el cabezal, puesto que, con el cabezal en la primera posición, mostrada en la Fig. 2a, serán necesarias menos pasadas paralelas consecutivas para cubrir una misma superficie relativamente amplia y despejada que si el cabezal tuviera una configuración permanente como la de la Fig. 2b, y por otro lado, con el cabezal en la segunda posición, mostrada en la Fig. 2b, se tiene un fácil acceso a esquinas y/o rincones, como por ejemplo las esquinas formadas por dos paredes en un rincón de una habitación, o rincones escondidos debajo de los muebles, cuyo acceso estaría vedado para un cabezal que tuviera una configuración permanente como la de la Fig. 2a. Debido a que, usualmente, la mayor parte del tiempo de utilización del cabezal va a ser en el tratamiento de superficies relativamente amplias y despejadas, el cabezal comprende unos medios elásticos que tienden a mantener el conjunto en la citada primera posición, siendo los elementos estructurales laterales 12a, 12b susceptibles de plagarse independientemente hacia la segunda posición bajo la influencia de una fuerza exterior. Por ejemplo, cuando se está tratando una superficie relativamente amplia y despejada, tal como la zona central de una habitación, el cabezal se mantiene en la primera posición, mientras que, cuando es presionado contra una esquina, el cabezal adopta por sí sólo la segunda posición, recuperando de nuevo la primera posición al ser retirado de la esquina. Similarmente puede ocurrir con cuando la trayectoria de un solo elemento estructural lateral es interferida, por ejemplo, por una pata de un mueble, en cuyo caso sólo este elemento estructural lateral se plegará momentáneamente para recuperar a continuación su posición alineada. En las Figs. 4a y 4b se muestran tales medios elásticos en la forma de unos muelles de tracción l ia, 11b conectados respectivamente entre unas palancas 24a, 24b solidarias respectivamente de los extremos interiores de los elementos estructurales laterales 12a, 12b y unos puntos de anclaje 25a, 25b en el elemento estructural central 12c. Las palancas 24a y 24b están a niveles distintos y tienen longitudes diferentes con el fin de no interferir mutuamente en sus trayectorias.It should be noted that, although the length of the aspiration front remains constant in any of the possible positions, the width Al of the aspiration front of the head disposed in said first position is substantially greater (of the order of 20% greater) than the width A2 of the suction head of the head disposed in said second position. This allows the machine power of the depression source to be optimized to the maximum without changing the head, since, with the head in the first position, shown in Fig. 2a, fewer consecutive parallel passes will be required to cover the same relatively wide and clear surface that if the head had a permanent configuration like that of Fig. 2b, and on the other hand, with the head in the second position, shown in Fig. 2b, there is easy access to corners and / or corners, such as the corners formed by two walls in a corner of a room, or corners hidden under furniture, whose access would be forbidden for a head that had a permanent configuration like that of Fig. 2a. Because, usually, most of the time of use of the head is going to be in the treatment of relatively wide and clear surfaces, the head comprises elastic means that tend to keep the assembly in said first position, the structural elements being laterals 12a, 12b capable of being plagued independently towards the second position under the influence of an external force. For example, when a relatively wide and clear surface is being treated, such as the central area of a room, the head is held in the first position, while, when pressed against a corner, the head adopts only the second position, recovering the first position once again removed from the corner. Similarly, it can occur when the path of a single lateral structural element is interfered, for example, by a leg of a piece of furniture, in which case only this lateral structural element will be momentarily folded to then recover its aligned position. In Figs. 4a and 4b are shown such elastic means in the form of tension springs line ia, 11b respectively connected between levers 24a, 24b respectively connected to the inner ends of the lateral structural elements 12a, 12b and anchor points 25a, 25b in the central structural element 12c. Levers 24a and 24b are at different levels and have different lengths in order not to interfere with each other in their trajectories.
Cuando la superficie a tratar es muy rugosa, por ejemplo, una alfombra o moqueta, y si la potencia de la máquina es considerable, el cabezal puede tener tendencia a plegarse hacia su segunda posición, venciendo la fuerza de los muelles lia y 11b, en los movimientos de avance del cabezal. Para evitar este problema, el cabezal comprende unos medios de bloqueo del giro de los elementos estructurales laterales 12a, 12b respecto al elemento estructural central 12c, manteniendo el conjunto fijado en dicha primera posición, cuyos medios de bloqueo comprenden una corredera 9a, mostrada en línea de trazos en la Fig. 4a, accionable manualmente a través de un mando exterior 9, mostrado en las Fígs. 2a y 2b. La citada corredera 9a es susceptible de adoptar una posición de bloqueo en la que queda interpuesto entre dos porciones de tope 26a, 26b de las respectivas palancas 24a y 24b, cuando el conjunto se encuentra en la primera posición, impidiendo la rotación de los elementos estructurales laterales 12a, 12b, o de retirarse de dicha posición de bloqueo permitiendo el giro de los mismos. Las palancas 24a y 24b incorporan también unas porciones de límite de giro 27a, 27b, y 28a, 28b, para limitar el giro de los correspondientes elementos estructurales laterales 12a, 12b respectivamente en la primera y la segunda posición.When the surface to be treated is very rough, for example, a carpet or carpet, and if the power of the machine is considerable, the head may have a tendency to fold towards its second position, overcoming the force of the springs lia and 11b, in feed movements of the head. To avoid this problem, the head comprises means for blocking the rotation of the lateral structural elements 12a, 12b with respect to the central structural element 12c, keeping the assembly fixed in said first position, whose blocking means comprise a slide 9a, shown in line of strokes in Fig. 4a, manually operable through an external control 9, shown in Figs. 2a and 2b. The said slide 9a is capable of adopting a locking position in which it is interposed between two stop portions 26a, 26b of the respective levers 24a and 24b, when the assembly is in the first position, preventing the rotation of the structural elements laterals 12a, 12b, or of withdrawing from said blocking position allowing their rotation. The levers 24a and 24b also incorporate turn limit portions 27a, 27b, and 28a, 28b, to limit the rotation of the corresponding lateral structural elements 12a, 12b respectively in the first and second positions.
En las Figs. 4a y 4b se muestra además un acoplamiento articulado 22 del tubo rígido 23 con la parte de cámara abierta 10c, la cual está constituida por una porción hueca del elemento estructural 12c abierta al exterior a través de la citada abertura 14. Volviendo de nuevo a las Figs. la y Ib, cada una de las citadas partes de cámara abierta laterales 10a, 10b, correspondientes a cada uno de dichos elementos estructurales laterales 12a, 12b, comprende una ranura longitudinal 16 que tiene un primer extremo 16a que se comunica, en cualquiera de dichas posiciones relativas deseadas, a través de la citada articulación 13, estando dicha abertura 14 de la parte de cámara abierta central 10c conectada a la fuente de depresión a través del elemento estructural central 12c. Opcionalmente, dicha ranura longitudinal 16 de cada uno de dichos elementos estructurales laterales 12a, 12b tiene un segundo extremo 16b que desemboca en un extremo lateral, distal de la articulación 13, del correspondiente elemento estructural lateral 12a, 12b.In Figs. 4a and 4b also shows an articulated coupling 22 of the rigid tube 23 with the open chamber part 10c, which is constituted by a hollow portion of the structural element 12c open to the outside through the said opening 14. Returning again to the Figs. la and Ib, each of said lateral open chamber parts 10a, 10b, corresponding to each of said lateral structural elements 12a, 12b, comprises a longitudinal groove 16 having a first end 16a communicating, in any of said relative positions desired, through said joint 13, said opening 14 of the central open chamber part 10c being connected to the source of depression through the central structural element 12c. Optionally, said longitudinal groove 16 of each of said lateral structural elements 12a, 12b has a second end 16b that ends at a lateral end, distal of the joint 13, of the corresponding lateral structural element 12a, 12b.
De manera conveniente, y tal como es convencional en la técnica del sector, las ranuras 16 disminuyen en cuanto a anchura y profundidad a medida que se alejan de la articulación 13 y están flanqueadas, por el lado opuesto al frente de aspiración, por un tramo de labio sobresaliente 30, de material flexible y elástico, tal como caucho, que impide un flujo hacia las partes de cámara abierta 10a, 10b, 10c procedente de dicho lado opuesto al frente de aspiración. Opcionalmente, la abertura 14 central también puede estar parcialmente flanqueada por dicho labio 30. También, por la parte correspondiente al frente de aspiración, pueden estar dispuestos unos medios, eventualmente elásticos, como unos grupos de cerdas, para restringir parcialmente la corriente de aire entrante. En las partes delanteras de los elementos estructurales 12a, 12b y 12c está dispuesto un bordón 35 de material elástico destinado a proteger dichas partes de posibles golpes o arañazos debidos al uso.Conveniently, and as is conventional in the art of the sector, the grooves 16 decrease in width and depth as they move away from the joint 13 and are flanked, on the side opposite the suction front, by a section of protruding lip 30, of flexible and elastic material, such as rubber, which prevents a flow towards the open chamber parts 10a, 10b, 10c from said side opposite the suction front. Optionally, the central opening 14 may also be partially flanked by said lip 30. Also, by the part corresponding to the suction front, means, possibly elastic, such as groups of bristles, may be arranged to partially restrict the incoming air flow . On the front parts of the structural elements 12a, 12b and 12c there is provided a bead 35 of elastic material intended to protect said parts from possible bumps or scratches due to use.
Haciendo ahora referencia a la Fig. 3 en conjunción con las demás figuras, los elementos estructurales 12a, 12b, 12c comprenden unas respectivas superficies inferiores, mutuamente coplanarias, en las que se abren las correspondientes ranuras longitudinales 16 y la abertura 14, estando previstos, sobresaliendo de dichas superficies inferiores unas ruedas orientables 20 que mantienen las citadas superficies inferiores mutuamente coplanarias substancialmente paralelas a dicha superficie a tratar y a una altura predeterminada de la misma, de manera el cabezal es fácilmente desplazable sobre la superficie a tratar cuando está aplicado en funcionamiento sobre la misma. Cada una de las citadas ruedas orientables 20 comprende una pieza cilindrica 31 montada de manera giratoria respecto a un eje normal a las citadas superficies inferiores mutuamente coplanarias y dentro de unos correspondientes huecos cilindricos 36 previstos en los elementos estructurales 12a, 12b y 12c. La pieza cilindrica 31 está sujetada centralmente mediante un tornillo 32, y en una posición excéntrica lleva montada una pequeña rueda 33 giratoria respecto a un eje 34 paralelo a dichas superficies inferiores y retenido en dicha pieza cilindrica 31 de manea que sólo sobresale una porción predeterminada de dicha rueda 33. Debido a la citada excentricidad de posición de la rueda 33 respecto al eje de giro de la pieza cilindrica 31, dicha rueda 33 tiende a orientarse en la dirección hacia la que el cabezal es empujado.Referring now to Fig. 3 in conjunction with the other figures, the structural elements 12a, 12b, 12c comprise respective bottom surfaces, mutually coplanar, in which the corresponding longitudinal grooves 16 and the opening 14 are opened, being provided, from said lower surfaces, orientable wheels 20 that maintain said mutually coplanar lower surfaces substantially parallel to said surface to be treated and at a predetermined height thereof, so that the head is easily movable on the surface to be treated when applied in operation on the same. Each of said geared wheels 20 comprises a cylindrical part 31 rotatably mounted with respect to a normal axis to said mutually coplanar bottom surfaces and within corresponding cylindrical holes 36 provided in structural elements 12a, 12b and 12c. The cylindrical part 31 is held centrally by means of a screw 32, and in a eccentric position it is mounted a small rotating wheel 33 with respect to an axis 34 parallel to said lower surfaces and retained in said cylindrical part 31 which only protrudes a predetermined portion of said wheel 33. Due to said eccentricity of position of the wheel 33 with respect to the axis of rotation of the cylindrical part 31, said wheel 33 tends to be oriented in the direction towards which the head is pushed.
Es evidente que dichas ruedas orientables 20 pueden ser reemplazadas por otros miembros de contacto con la superficie a tratar, tales como unos patines, o unos topes hemisféricos deslizantes, siempre que realicen la misma función. Opcionalmente, el cabezal de la invención comprende unos medios (no mostrados) para regular la distancia de dicha porción sobresaliente de las citadas ruedas orientables 20, u otros miembros de contacto, desde las citadas superficies inferiores, regulando con ello dicha altura predeterminada al menos entre dos niveles diferentes, aptos para superficies a tratar de diferentes características. En general, un suelo duro y liso requiere una menor altura de los medios de cámara abierta que una superficie mullida, tal como una alfombra o moqueta.It is evident that said orientable wheels 20 can be replaced by other members of contact with the surface to be treated, such as skates, or sliding hemispherical stops, provided they perform the same function. Optionally, the head of the invention comprises means (not shown) for regulating the distance of said protruding portion of said steerable wheels 20, or other contact members, from said lower surfaces, thereby regulating said predetermined height at least between two different levels, suitable for surfaces to deal with different characteristics. In general, a hard and smooth floor requires a lower height of the open chamber means than a fluffy surface, such as a carpet or carpet.
Los elementos estructurales 12a, 12b, 12c, según un ejemplo de realización preferido, comprenden unos cuerpos huecos formados cada uno por al menos dos piezas encajables y fijables entre sí mediante tornillos, obtenidas por moldeo de inyección de un material plástico, estando prevista una carcasa superior 21 asociada al elemento estructural central 12c para cubrir al menos la articulación 13, los citados medios elásticos, tales como los muelles de tracción l ia, 11b, y gran parte de los elementos estructurales laterales 12a, 12b cuando están en la citada segunda posición. A través de la carcasa superior 21 emerge el citado acoplamiento articulado 22 de la parte de cámara abierta central 10c con dicho tubo rígido 23. En el ejemplo ilustrado, el elemento estructural central 12c, además de la citada porción hueca constitutiva de la parte de cámara abierta central 10c, tiene unas prolongaciones laterales destinadas a cerrar completamente la carcasa superior 21 por la parte inferior. Así, en dicho elemento estructural central 12c se forman unas cavidades laterales 29 destinadas a recibir parcialmente los elementos estructurales laterales 12a, 12b cuando adoptan la citada segunda posición plegada.The structural elements 12a, 12b, 12c, according to a preferred embodiment, comprise hollow bodies each formed by at least two pieces that can be fixed and fastened together by means of screws, obtained by injection molding of a plastic material, a housing being provided. upper 21 associated with the central structural element 12c to cover at least the articulation 13, said elastic means, such as the tension springs l, 11b, and a large part of the lateral structural elements 12a, 12b when they are in said second position . Said articulated coupling 22 of the central open chamber part 10c with said rigid tube 23 emerges through the upper housing 21. In the illustrated example, the central structural element 12c, in addition to the said hollow constitutive portion of the chamber part Open central 10c, it has lateral extensions intended to completely close the upper housing 21 from the bottom. Thus, said central structural element 12c forms side cavities 29 intended to partially receive the lateral structural elements 12a, 12b when they adopt said second folded position.
Haciendo ahora referencia a las Figs. 5a y 5b, dicha articulación 13 comprende unas porciones de casquillo 17a, 17b, 17c, coaxiales, respectivamente solidarias de los elementos estructurales 12a, 12b, 12c, cuyas porciones de casquillo 17a, 17b, 17c tienen unas paredes cilindricas susceptibles de girar ajustadamente las unas sobre las otras. Aquella porción de casquillo 17c solidaria del elemento estructural central 12c está situada en la posición más interior de los tres, y la abertura 14 está dispuesta a través de un espacio interior de dicha porción de casquillo 17c, efectuándose la citada comunicación de las partes de cámara abierta laterales 10a, 10b con la parte de cámara abierta central 10c a través de unos respectivos rebajes 18a, 18b, 18c de dichas paredes cilindricas, cuyos rebajes 18a, 18b, 18c coinciden entre sí, permitiendo al menos un paso de flujo a su través, en todas las posiciones relativas de los elementos estructurales 12a, 12b, 12c comprendidas entre dicha primera y dicha segunda posición.Referring now to Figs. 5a and 5b, said joint 13 comprises coaxial bushing portions 17a, 17b, 17c, respectively, of the structural elements 12a, 12b, 12c, whose bushing portions 17a, 17b, 17c have cylindrical walls capable of tightly rotating the one over the other. That portion of bushing 17c integral with the central structural element 12c is located in the innermost position of the three, and the opening 14 is arranged through an interior space of said bushing portion 17c, said communication being made of the lateral open chamber parts 10a, 10b with the central open chamber part 10c through respective recesses 18a, 18b, 18c of said cylindrical walls, whose recesses 18a, 18b, 18c coincide with each other, allowing at least one flow passage therethrough, in all the relative positions of the structural elements 12a, 12b, 12c comprised between said first and said second position.
En las Figs. 6a, 6b se muestra una del ejemplo de realización de la articulación 13 que una variante del descrito en relación con las anteriores Figs. 5a y b. Aquí, además de los citados rebajes 18a, 18b, 18c, dichas paredes cilindricas incluyen otras interrupciones 19a, 19b, 19c que coinciden entre sí permitiendo al menos un paso de flujo a su través entre la abertura 14 y el citado vértice del frente de aspiración, al menos en dicha segunda posición de los elementos estructurales 12a, 12b, 12c, mostrada en la Fig. 6b, de manera que se facilita la succión del polvo u otra porquería que tiende a acumularse en las esquinas y rincones, tal como ilustra la situación de la Fig. 2b.In Figs. 6a, 6b shows one of the embodiment example of the joint 13 that a variant of the one described in relation to the previous Figs. 5a and b. Here, in addition to the aforementioned recesses 18a, 18b, 18c, said cylindrical walls include other interruptions 19a, 19b, 19c that coincide with each other allowing at least one flow passage through it between the opening 14 and said vertex of the suction front , at least in said second position of the structural elements 12a, 12b, 12c, shown in Fig. 6b, so that the suction of the dust or other filth that tends to accumulate in the corners and corners is facilitated, as illustrated by the situation of Fig. 2b.
En las Figs. 7a y 7b se muestra todavía otra variante de la ejecución de la articulación 13. En ella, la porción de casquillo 17c solidaria del elemento estructural central 12c está en la posición más exterior de las tres, estando dispuesta la abertura 14 a través de un espacio en forma de sector anular interior de la propia porción de casquillo 17c (ejemplo ilustrado) o a través de un espacio entre la porción de casquillo 17c y una de las porciones de casquillo 17a, 17b, solidarias respectivamente de los elementos estructurales laterales 12a, 12b. Aquí, sólo la pared cilindrica de la porción de casquillo 17c, solidaria del elemento estructural central 12c, está dotada de rebajes 18c, 19c, para comunicar la parte de cámara abierta central 10c con las partes de cámara abierta laterales 10a y 10b, y directamente con el vértice del frente de aspiración, respectivamente.In Figs. 7a and 7b shows yet another variant of the execution of the joint 13. In it, the bushing portion 17c integral with the central structural element 12c is in the outermost position of the three, the opening 14 being arranged through a space in the form of an inner annular sector of the bushing portion 17c itself (illustrated example) or through a space between the bushing portion 17c and one of the bushing portions 17a, 17b, respectively connected to the lateral structural elements 12a, 12b. Here, only the cylindrical wall of the bushing portion 17c, integral with the central structural element 12c, is provided with recesses 18c, 19c, to communicate the central open chamber part 10c with the lateral open chamber parts 10a and 10b, and directly with the apex of the suction front, respectively.
Es evidente que un experto en la materia podría realizar aún otras variaciones basándose en los mismos principios básicos de la presente invención sin salirse del alcance de la misma, el cual está definido por las reivindicaciones adjuntas. It is clear that one skilled in the art could make other variations based on the same basic principles of the present invention without departing from the scope thereof, which is defined by the appended claims.

Claims

REIVTNDICACIO ES REIVTNDICACIO IS
1.- Cabezal para aparato aspirador de polvo, del tipo que comprende unos medios de cámara abierta de aspiración conectados a una fuente de depresión a través de al menos una conducción apropiada, cuyos medios de cámara abierta se cierran parcialmente al ser aplicado el cabezal sobre la superficie a tratar delimitando al menos un frente de aspiración, caracterizado porque dicho frente de aspiración, que es al menos uno, comprende varias porciones susceptibles de un cambio de posición relativa entre sí, de manera que dicho frente de aspiración adopta una geometría variable.1.- Head for dust suction apparatus, of the type comprising open chamber suction means connected to a source of depression through at least one appropriate conduction, whose open chamber means are partially closed when the head is applied on the surface to be treated defining at least one suction front, characterized in that said suction front, which is at least one, comprises several portions susceptible to a change in relative position with each other, so that said suction front adopts a variable geometry.
2.- Cabezal, de acuerdo con la reivindicación 1, caracterizado porque los citados medios de cámara abierta comprenden varias partes de cámara abierta (10a, 10b, 10c) integradas en varios elementos estructurales (12a, 12b, 12c) conectados mecánicamente entre sí de manera movible, manteniéndose dichas partes de cámara abierta (10a, 10b, 10c) en mutua comunicación en una gama de posiciones relativas deseada, estando al menos una de dichas partes de cámara abierta (10c) conectada a dicha fuente de depresión, y constituyendo en conjunto una estructura de configuración geométrica variable que al ser aplicada sobre la superficie a tratar delimita el citado frente de aspiración, que es al menos uno.2. Head according to claim 1, characterized in that said open chamber means comprise several open chamber parts (10a, 10b, 10c) integrated in several structural elements (12a, 12b, 12c) mechanically connected to each other of movable manner, said chamber parts being kept open (10a, 10b, 10c) in mutual communication in a desired range of relative positions, at least one of said chamber parts being open (10c) connected to said source of depression, and constituting set a variable geometric configuration structure that when applied on the surface to be treated delimits the aforementioned suction front, which is at least one.
3.- Cabezal, de acuerdo con la reivindicación 2, caracterizado porque aquel elemento estructural (12c) que integra la citada parte de cámara abierta (10c) conectada a la fuente de depresión es un elemento estructural central (12c), estando otros dos elementos estructurales laterales (12a, 12b) dispuestos simétricamente a lado y lado de dicho elemento estructural central (12c).3. - Head, according to claim 2, characterized in that that structural element (12c) that integrates said open chamber part (10c) connected to the source of depression is a central structural element (12c), two other elements being lateral structural elements (12a, 12b) symmetrically arranged on the side and side of said central structural element (12c).
4.- Cabezal, de acuerdo con la reivindicación 3, caracterizado porque la citada conexión mecánica de dichos elementos estructurales laterales (12a, 12b) con dicho elemento estructural central (12c) se realiza a través de una articulación (13) respecto a un eje que, con el cabezal en posición de trabajo, es substancialmente normal a dicha superficie e tratar, manteniéndose la citada comunicación de las partes de cámara abierta a través de dicha articulación (13).4. Head, according to claim 3, characterized in that said mechanical connection of said lateral structural elements (12a, 12b) with said central structural element (12c) is made through a joint (13) with respect to an axis that, with the head in working position, it is substantially normal to said surface and to be treated, the said communication of the open chamber parts being maintained through said articulation (13).
5.- Cabezal, de acuerdo con la reivindicación 4, caracterizado porque la citada parte de cámara abierta (10c) de dicho elemento estructural central (12c) comprende al menos una abertura (14) con al menos un borde curvado (15) substancialmente concéntrico con dicho eje de la articulación (13). 5. Head according to claim 4, characterized in that said open chamber part (10c) of said central structural element (12c) comprises at least one opening (14) with at least one substantially concentric curved edge (15) with said axis of the joint (13).
6.- Cabezal, de acuerdo con la reivindicación 5, caracterizado porque dicha gama de posiciones relativas deseada de las partes de cámara abierta (10a, 10b, 10c) se obtiene por la rotación relativa de los elementos estructurales laterales (12a, 12b) respecto al elemento estructural central (12c) entre una primera posición en la que dichas partes de cámara abierta (10a, 10b, 10c) están substancialmente alineadas, delimitando un frente de aspiración recto, y una segunda posición en la que las partes de cámara abierta laterales (10a, 10b) están formando entre sí un ángulo ligeramente inferior a un recto, con dicha abertura (14) de la parte de cámara abierta central (10c) en el vértice, delimitando un frente de aspiración en punta, apto para esquinas y/o rincones. 6. Head according to claim 5, characterized in that said desired range of relative positions of the open chamber parts (10a, 10b, 10c) is obtained by the relative rotation of the lateral structural elements (12a, 12b) with respect to to the central structural element (12c) between a first position in which said open chamber parts (10a, 10b, 10c) are substantially aligned, delimiting a straight suction front, and a second position in which the lateral open chamber parts (10a, 10b) are forming an angle slightly less than a rectum, with said opening (14) of the central open chamber part (10c) at the vertex, delimiting a pointed suction front, suitable for corners and / or corners.
7.- Cabezal, de acuerdo con la reivindicación 6, caracterizado porque comprende unos medios elásticos, tales como unos muelles de tracción (lia, 11b) conectados respectivamente entre los elementos estructurales laterales (12a, 12b) y el elemento estructural central (12c), que tienden a mantener el conjunto en la citada primera posición. 7. Head according to claim 6, characterized in that it comprises elastic means, such as tension springs (lia, 11b) respectively connected between the lateral structural elements (12a, 12b) and the central structural element (12c) , which tend to keep the whole in the aforementioned first position.
8.- Cabezal, de acuerdo con la reivindicación 7, caracterizado porque comprende unos medios de bloqueo del giro de los elementos estructurales laterales (12a, 12b) respecto al elemento estructural central (12c) manteniendo el conjunto en una posición fija, cuyos medios de bloqueo son accionables manualmente a través de un mando exterior (9). 8. Head, according to claim 7, characterized in that it comprises means for blocking the rotation of the lateral structural elements (12a, 12b) with respect to the central structural element (12c) keeping the assembly in a fixed position, whose means of Locks are manually operable through an external control (9).
9.- Cabezal, de acuerdo con la reivindicación 8, caracterizado porque cada una de las citadas partes de cámara abierta laterales (10a, 10b), correspondientes a cada uno de dichos elementos estructurales laterales (12a, 12b), comprende al menos una ranura longitudinal (16) que tiene un primer extremo (16a) que se comunica, al menos en dichas posiciones relativas deseadas, a través de la citada articulación (13), con dicha abertura (14) de la parte de cámara abierta central (10c) conectada a la fuente de depresión a través del elemento estructural central (12c).9. Head according to claim 8, characterized in that each of said lateral open chamber parts (10a, 10b), corresponding to each of said lateral structural elements (12a, 12b), comprises at least one slot longitudinal (16) having a first end (16a) that communicates, at least in said desired relative positions, through said articulation (13), with said opening (14) of the central open chamber part (10c) connected to the source of depression through the central structural element (12c).
10.- Cabezal, de acuerdo con la reivindicación 9, caracterizado porque dicha articulación (13) comprende unas porciones de casquillo (17a, 17b, 17c), coaxiales, respectivamente solidarias de los elementos estructurales (12a, 12b, 12c), cuyas porciones de casquillo (17a, 17b, 17c) tienen unas paredes cilindricas susceptibles de girar ajustadamente las unas sobre las otras, efectuándose la citada comunicación de las partes de cámara abierta laterales (10a, 10b) con la parte de cámara abierta central (10c) a través de unas respectivas interrupciones, aberturas o rebajes (18a, 18b, 18c) de dichas paredes cilindricas, cuyas interrupciones, aberturas o rebajes (18a, 18b, 18c) coinciden entre sí permitiendo al menos un paso de flujo a su través al menos en dichas posiciones relativas deseadas de los elementos estructurales (12a, 12b, 12c).10. Head according to claim 9, characterized in that said joint (13) comprises coaxial bushing portions (17a, 17b, 17c), respectively integral with the structural elements (12a, 12b, 12c), whose portions of bushing (17a, 17b, 17c) have cylindrical walls that can rotate tightly over each other, said communication being made of the lateral open chamber parts (10a, 10b) with the central open chamber part (10c) a through respective interruptions, openings or recesses (18a, 18b, 18c) of said cylindrical walls, whose interruptions, openings or recesses (18a, 18b, 18c) coincide with each other allowing at least one flow passage through them at least in said desired relative positions of the structural elements (12a, 12b, 12c).
11.- Cabezal, de acuerdo con la reivindicación 10, caracterizado porque dichas paredes cilindricas incluyen además otras interrupciones, aberturas o rebajes (19a, 19b,11. Head, according to claim 10, characterized in that said cylindrical walls also include other interruptions, openings or recesses (19a, 19b,
19c) que coinciden entre sí permitiendo al menos un paso de flujo a su través entre la abertura (14) y el citado vértice del frente de aspiración, al menos en dicha segunda posición de los elementos estructurales (12a, 12b, 12c).19c) which coincide with each other allowing at least one flow passage through it between the opening (14) and said vertex of the suction front, at least in said second position of the structural elements (12a, 12b, 12c).
12.- Cabezal, de acuerdo con la reivindicación 10 ó 11, caracterizado porque la porción de casquillo (17c) solidaria del elemento estructural central (12c) está en la posición más interior, estando dispuesta la abertura (14) a través de un espacio interior de dicha porción de casquillo (17c).12. Head according to claim 10 or 11, characterized in that the bushing portion (17c) integral with the central structural element (12c) is in the innermost position, the opening (14) being arranged through a space inside said sleeve portion (17c).
13.- Cabezal, de acuerdo con la reivindicación 10 ó 11, caracterizado porque la porción de casquillo (17c) solidaria del elemento estructural central (12c) está en la posición más exterior, estando dispuesta la abertura (14) a través de un espacio interior de la propia porción de casquillo (17c) o un espacio entre la porción de casquillo (17c) y una de las porciones de casquillo (17a, 17b), solidarias de los elementos estructurales laterales (12a, 12b).13. Head according to claim 10 or 11, characterized in that the bushing portion (17c) integral with the central structural element (12c) is in the outermost position, the opening (14) being arranged through a space inside the bushing portion itself (17c) or a space between the bushing portion (17c) and one of the bushing portions (17a, 17b), in solidarity with the lateral structural elements (12a, 12b).
14.- Cabezal, de acuerdo con la reivindicación 9, caracterizado porque dicha ranura longitudinal (16), que es al menos una, de cada uno de dichos elementos estructurales laterales (12a, 12b) tiene un segundo extremo (16b) que desemboca en un extremo lateral, distal de la articulación (13), del correspondiente elemento estructural lateral (12a, 12b).14. Head, according to claim 9, characterized in that said longitudinal groove (16), which is at least one, of each of said lateral structural elements (12a, 12b) has a second end (16b) that flows into a lateral end, distal of the joint (13), of the corresponding lateral structural element (12a, 12b).
15.- Cabezal, de acuerdo con la reivindicación 9, caracterizado porque los elementos estructurales (12a, 12b, 12c) comprenden unas respectivas superficies inferiores, mutuamente coplanarias, en las que se abren las correspondientes ranuras longitudinales (16) y la abertura (14), estando previstos, sobresaliendo de dichas superficies inferiores, unos miembros de contacto con la superficie a tratar, tales como unas ruedas orientables (20), unos patines, o unos topes hemisféricos deslizantes, que mantienen las citadas superficies inferiores mutuamente coplanarias substancialmente paralelas a dicha superficie a tratar y a una altura predeterminada de la misma, de manera el cabezal es fácilmente desplazable sobre la superficie a tratar cuando está aplicado en funcionamiento sobre la misma. 15. Head, according to claim 9, characterized in that the structural elements (12a, 12b, 12c) comprise respective lower surfaces, mutually coplanar, in which the corresponding longitudinal grooves (16) and the opening (14) are opened. ), being provided, protruding from said lower surfaces, contact members with the surface to be treated, such as adjustable wheels (20), skates, or sliding hemispherical stops, which maintain said mutually coplanar bottom surfaces substantially parallel to said surface to be treated and at a predetermined height thereof, so that the head is easily movable on the surface to be treated when it is applied in operation thereon.
16.- Cabezal, de acuerdo con la reivindicación 15, caracterizado porque comprende unos medios para regular la distancia que sobresalen los citados miembros de contacto de las citadas superficies inferiores, regulando con ello dicha altura predeterminada al menos entre dos niveles diferentes, aptos para superficies a tratar de diferentes características.16. - Head, according to claim 15, characterized in that it comprises means for regulating the distance that said contact members protrude from said lower surfaces, thereby regulating said predetermined height at least between two different levels, suitable for surfaces To try different characteristics.
17.- Cabezal, de acuerdo con la reivindicación 9, caracterizado porque dichas ranuras (16) disminuyen en cuanto a anchura y profundidad a medida que se alejan de la articulación (13).17. Head according to claim 9, characterized in that said grooves (16) decrease in width and depth as they move away from the joint (13).
18.- Cabezal, de acuerdo con la reivindicación 9, caracterizado porque dichas ranuras (16) y/o abertura (14) están flanqueadas, por el lado opuesto al frente de aspiración, por un labio sobresaliente (30), de material flexible y elástico, tal como caucho, que impide un flujo hacia las partes de cámara abierta (10a, 10b, 10c) procedente de dicho lado opuesto al frente de aspiración.18. - Head, according to claim 9, characterized in that said grooves (16) and / or opening (14) are flanked, on the opposite side to the suction front, by an protruding lip (30), of flexible material and elastic, such as rubber, which prevents a flow towards the open chamber parts (10a, 10b, 10c) coming from said side opposite the suction front.
19.- Cabezal, de acuerdo con una cualquiera de las Reivindicaciones 2 a 18, caracterizado porque los elementos estructurales (12a, 12b, 12c) comprenden unos cuerpos huecos formados cada uno por al menos dos piezas encajables y fijables entre sí, obtenidas por moldeo de inyección de un material plástico, estando prevista una carcasa superior (21) asociada al elemento estructural central (12c) para cubrir al menos la articulación (13), los citados medios elásticos, tales como muelles de tracción (l ia, 11b), y gran parte de los elementos estructurales laterales (12a, 12b) cuando están en la citada segunda posición, a través de cuya carcasa superior (21) emerge un acoplamiento articulado (22) de la parte de cámara abierta central (10c) con dicha conducción apropiada, tal como un tubo rígido (23) prolongado por una manga flexible, de conexión a la citada fuente de depresión. 19. Head, according to any one of Claims 2 to 18, characterized in that the structural elements (12a, 12b, 12c) comprise hollow bodies each formed by at least two interlocking and interlocking parts, obtained by molding of injection of a plastic material, an upper housing (21) associated with the central structural element (12c) being provided to cover at least the joint (13), said elastic means, such as tension springs (line, 11b), and a large part of the lateral structural elements (12a, 12b) when they are in said second position, through whose upper housing (21) an articulated coupling (22) emerges from the central open chamber part (10c) with said conduction appropriate, such as a rigid tube (23) extended by a flexible sleeve, connecting to said source of depression.
PCT/ES2000/000298 2000-08-01 2000-08-01 Head for a dust vacuum cleaner WO2002011595A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
PCT/ES2000/000298 WO2002011595A1 (en) 2000-08-01 2000-08-01 Head for a dust vacuum cleaner
AU2000264440A AU2000264440A1 (en) 2000-08-01 2000-08-01 Head for a dust vacuum cleaner
AT01963008T ATE343955T1 (en) 2000-08-01 2001-08-01 VACUUM CLEANER MOUTHPIECE
ES01963008T ES2275715T3 (en) 2000-08-01 2001-08-01 HEAD FOR DUST ASPIRATOR APPARATUS.
AU2001284063A AU2001284063A1 (en) 2000-08-01 2001-08-01 Head for a dust vacuum cleaner
MXPA03000932A MXPA03000932A (en) 2000-08-01 2001-08-01 Head for a dust vacuum cleaner.
DE60124266T DE60124266T2 (en) 2000-08-01 2001-08-01 VACUUM CLEANER MOUTHPIECE
PCT/ES2001/000311 WO2002011596A1 (en) 2000-08-01 2001-08-01 Head for a dust vacuum cleaner
PT01963008T PT1314388E (en) 2000-08-01 2001-08-01 Head for a dust vacuum cleaner
BR0113082-0A BR0113082A (en) 2000-08-01 2001-08-01 Vacuum Cleaner Nozzle
EP01963008A EP1314388B1 (en) 2000-08-01 2001-08-01 Head for a dust vacuum cleaner
US10/343,493 US20040025289A1 (en) 2000-08-01 2001-08-01 Head for a dust vacuum cleaner

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EP (1) EP1314388B1 (en)
AT (1) ATE343955T1 (en)
AU (2) AU2000264440A1 (en)
BR (1) BR0113082A (en)
DE (1) DE60124266T2 (en)
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Cited By (4)

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US6775882B2 (en) 2002-01-11 2004-08-17 Royal Appliance Mfg. Co. Stick vacuum with dirt cup
US6772477B2 (en) 2002-02-06 2004-08-10 Royal Appliance Mfg. Co. Floor nozzle for a vacuum cleaner
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EP1314388A1 (en) 2003-05-28
ATE343955T1 (en) 2006-11-15
DE60124266T2 (en) 2007-05-31
EP1314388B1 (en) 2006-11-02
PT1314388E (en) 2007-02-28
US20040025289A1 (en) 2004-02-12
MXPA03000932A (en) 2004-08-02
AU2000264440A1 (en) 2002-02-18
ES2275715T3 (en) 2007-06-16
BR0113082A (en) 2003-06-24
AU2001284063A1 (en) 2002-02-18
DE60124266D1 (en) 2006-12-14

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