EP3041394B1 - Brush for cleaning equipment - Google Patents
Brush for cleaning equipment Download PDFInfo
- Publication number
- EP3041394B1 EP3041394B1 EP14790313.2A EP14790313A EP3041394B1 EP 3041394 B1 EP3041394 B1 EP 3041394B1 EP 14790313 A EP14790313 A EP 14790313A EP 3041394 B1 EP3041394 B1 EP 3041394B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bristles
- movement mechanism
- brush
- bristle
- lever
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 238000004140 cleaning Methods 0.000 title claims description 21
- 230000007246 mechanism Effects 0.000 claims description 85
- 239000004744 fabric Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Images
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
- A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
- A47L9/0633—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads
- A47L9/064—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads actuating means therefor
- A47L9/0653—Nozzles with fixed, e.g. adjustably fixed brushes or the like with retractable brushes, combs, lips or pads actuating means therefor with mechanical actuation, e.g. using a lever
-
- 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
- A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
- A47L9/066—Nozzles with fixed, e.g. adjustably fixed brushes or the like with adjustably mounted brushes, combs, lips or pads; Height adjustment of nozzle or dust loosening tools
Definitions
- the present invention concerns a brush usable as an end accessory on cleaning equipment, such as vacuum cleaners, electric brushes, combined apparatuses to vacuum and wash floors , or centralized domestic vacuum plants.
- the present invention is usable both for cleaning smooth surfaces or surfaces covered by tiles, or parquet made of wood or any of its by-products or substitutes, or with laminate or any other polymer coverings, or for cleaning rugs or fitted carpets or other surfaces covered in fabric, for example cushions or furnishing elements.
- Brushes for generic use are known, suitable for sucking up dust and gathering dirt present on common surfaces, smooth and resistant, such as floors with tiles, laminate floors, floors with resin or polymer layers of various types.
- this type of brush In proximity to the suction apertures, this type of brush generally has one or more rows of plastic bristles, which must be both flexible and resistant and normally have an average hardness.
- Brushes are also known studied specifically for suction on surfaces in fabric, such as for example fitted carpet, rugs or cushions. These brushes can be provided with hard bristles, shorter than those used on the surfaces described above, or, instead of bristles, strips of velvet or other material, or wheels, which allow sliding on the fabric surfaces and/or the electrostatic capture of the dust or other residues of dirt.
- Brushes are also known for exclusive use on delicate surfaces, for example those covered in parquet or the so-called pre-finished wood flooring, or with marble or glass slabs. These brushes have bristles made of natural or synthetic materials characterized by great flexibility and lower rigidity than those brushes used for more resistant surfaces.
- One purpose of the present invention is to make a brush for cleaning equipment that is able to have a plurality of functions, determining high versatility and efficiency of the cleaning equipment to which it is associated, and that allows to reduce the number of accessories needed for cleaning surfaces of different nature and characteristics.
- Another purpose is to make a brush that is at the same time multi-functional, light, simple to make and use, and consisting of a reduced number of components.
- the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
- a brush for cleaning equipment comprises a containing body, a plurality of bristles, bristle command and movement means able to be selectively activated in order to make the brush assume a first functioning condition in which all the bristles protrude from the containing body, and a second functioning condition in which all the bristles are completely retracted inside the containing body.
- the bristle command and movement means can be selectively activated to make the brush also assume a third functioning condition in which at least a first group of bristles protrudes outside the containing body and at least one group of bristles is completely retracted inside it.
- the brush according to the present invention therefore has the advantage of being able to assume three distinct functioning conditions. This, together with the division of the bristles into groups, gives a greater versatility and flexibility of use of the brush, which can therefore be advantageously used in several situations where there is dirt, whether it is coarse, normal or fine, and for almost all surfaces to be cleaned, whether they are smooth, have grooves, are resistant, delicate or in fabric.
- Another advantage of the present invention is that it allows to reduce the number of accessories for cleaning machines needed by a user, containing a plurality of functions in one brush.
- the amount by which the first group of bristles protrudes from the containing body is greater than the amount by which all the bristles protrude from the containing body in the first functioning condition.
- the present invention also concerns forms of embodiment in which the amount by which the first group of bristles protrudes from the containing body in the third functioning condition is less than or equal to the amount by which all the bristles protrude from the containing body in the first functioning condition.
- the bristle command and movement means comprise at least a first bristle movement mechanism connected to the first group of bristles and a first command lever selectively drivable to make the first bristle movement mechanism assume an activated position, in which the first group of bristles protrudes from the containing body by a desired quantity, and a de-activated position in which the first group of bristles is completely retracted inside the containing body.
- the bristle command and movement means also comprise a second bristle movement mechanism connected to the second group of bristles, and a second command lever selectively drivable to make the first bristle movement mechanism assume a partly activated position and the second bristle movement mechanism simultaneously assume an activated position, in which both the first and the second group of bristles partly protrude from the containing body of the brush, wherein the second bristle movement mechanism is configured to simultaneously move the first group of bristles and the second group of bristles.
- the brush can also comprise a third lever which, whatever the bristle movement mechanism is in the activated position, determines the passage to the de-activated position.
- a brush according to the present invention is indicated in its entirety by the reference number 10 and is configured to be associated as an end accessory to cleaning equipment, such as vacuum cleaners, electric brushes, or other equipment to suck up dust or other particles from a surface.
- cleaning equipment such as vacuum cleaners, electric brushes, or other equipment to suck up dust or other particles from a surface.
- the brush 10 includes a containing body 11 that defines the main structure and the external conformation of the brush 10.
- the containing body 11 can be defined by a single shell, continuous and in a single piece, or by a plurality of parts connected to each other to define a closed body, such as, in the solutions described with reference to the attached drawings, an upper part 111, and a lower part or brush bottom 211, or again a front part and a rear part, or combinations of these solutions.
- the containing body 11 contains two mechanisms configured to move the bristles 14 exiting from and retracting into the containing body 11.
- the reference to the two mechanisms is used in the present description merely as an example of possible movement and command means of the bristles 14, and is not intended to limit the field of protection of the present invention.
- the two mechanisms include a first bristle movement mechanism 12 and a second bristle movement mechanism 13.
- the first bristle movement mechanism 12 is configured to move a first group of bristles 14a and the second bristle movement mechanism 13 is configured to move a second group of bristles 14b.
- first through aperture 15a is made in which a first command lever 16a of the first bristle movement mechanism 12 is inserted so as to partly protrude from the upper part 111.
- a third through aperture 15c is made in the upper part 111 of the containing body 11 and houses a third lever 16c to retract the bristles 14, partly protruding from the upper part 111 and cooperating with both the bristle movement mechanisms 12, 13.
- the first lever 16a, the second lever 16b and the third lever 16c partly protrude from the upper part 111 of the containing body 11 to be selectively driven from the outside by a user, for example manually, before the installation of the brush 10 in the cleaning equipment, or with a foot after the installation of the brush 10 and/or during use of the equipment.
- levers 16a, 16b, 16c are simply an example of a possible form of embodiment of movement and command means of the bristles 14, and is not intended to limit the field of protection of the present invention. Indeed, forms of embodiment are possible in which the brush 10 is provided with a single command lever, or other forms of embodiment in which the brush 10 includes movement and command means which can be driven remotely, without command levers and/or movement mechanisms.
- the selective drive of the first lever 16a, the second lever 16b and the third lever 16c determines the command to activate or de-activate one or both bristle movement mechanisms 12, 13.
- the brush 10 can assume three functioning conditions, depending on the surfaces to be cleaned, as will be described in detail hereafter.
- the containing body 11 conventionally contains a suction pipe 17 that conveys the dust or particles from the surface to be cleaned toward the body of the cleaning equipment.
- a suction mouth 18 is visible that communicates with the suction pipe 17 and represents its aperture toward the surface to be cleaned.
- Fig. 2a is used to schematically describe a first functioning condition of the brush 10, in which all the bristles 14, that is, not only those of the first group of bristles 14a but also those of the second group of bristles 14b, protrude from the brush bottom 211.
- a suction chamber is created which is almost completely closed, since the bristles 14 are positioned both to the front and to the rear with respect to the suction mouth 18.
- Fig. 2b is used to schematically describe a second functioning condition of the brush 10, in which all the bristles 14 are retracted inside the containing body 11, and therefore neither those of the first group of bristles 14a, nor those of the second group of bristles 14b protrude therefrom.
- contact with the surface to be cleaned is established by means of wheels 19, in this case present in correspondence to the rear zone of the brush bottom 211, in proximity to the part of the brush 10 configured to be coupled with the cleaning equipment.
- Fig. 2c is used to schematically describe a third functioning condition of the brush 10, in which only a part of the bristles 14, in this case only those of the first group of bristles 14a, protrudes from the brush bottom 211.
- the first functioning condition ( fig. 2a ) can be adopted for the usual cleaning of smooth floors which are conventionally resistant, for example ceramic tiles;
- the second functioning condition ( fig. 2b ) can be adopted to clean surfaces in fabric, for example fitted carpets or rugs, or surfaces with big grooves;
- the third functioning condition ( fig. 2c ) can be adopted for delicate floors, for example parquet, and/or conditions of coarse dirt.
- Figs. 3a and 3b are used to describe forms of embodiment of the first bristle movement mechanism 12, which is configured to move the bristles of the first group of bristles 14a vertically.
- the first bristle movement mechanism 12 is shown in an activated position, that is, with the first group of bristles 14a lowered, while fig. 3b shows a de-activated position, or retraction position of the first group of bristles 14a.
- Figs. 4a and 4b are used to describe forms of embodiment of the second bristle movement mechanism 13, which is configured to move the bristles of the second group of bristles 14b vertically.
- the second bristle movement mechanism 13 is shown in an activated position, or lowered position of the second group of bristles 14b, while fig. 4b shows a de-activated position, or retracted position, of the second group of bristles 14b.
- the first bristle movement mechanism 12 can be connected to the first lever 16a and include a support frame 20a, to which the first group of bristles 14a is attached, a rocker arm 21a and a rod 22a which connects the first lever 16a and the rocker arm 21a.
- the first lever 16a is pivoted on the containing body 11, for example on its upper part 111, in correspondence with its rotation pin 23a, which defines a first axis of rotation X1 around which the first lever 16a rotates in order to make the first bristle movement mechanism 12 pass from the activated position to the de-activated one, and vice versa.
- the rocker arm 21a is provided with a pivoted end 121a, rotatably connected to the containing body 11, for example to its upper part 111, so as to define a second axis of rotation X2.
- the rod 22a can have a first end portion 122a, hinged to the first lever 16a in correspondence to a thrust segment 116a of the latter, and a second end portion 222a, opposite the first end portion 122a, hinged to a connection end 221a of the rocker arm 21a, opposite with respect to the pivoting end 121a of the latter.
- the rod 22a can be C-shaped and the end portions 122a and 222a can be two transverse branches of this conformation.
- the rod 22a is hinged to the first lever 16a by inserting its first end portion 122a in two through holes 24a (only one of which is visible in fig. 3a ) aligned along a first hinging axis Y1, parallel to the first axis of rotation X1.
- the through holes 24a act as first hinging means and are positioned at a first distance H1 from the rotation pin 23a.
- the first distance H1 defines the distance between the first axis of rotation X1 and the first hinging axis Y1.
- the rod 22a is hinged to the rocker arm 21a by inserting its second end portion 222a in a housing hole 25a made through in the connection end 221b of the rocker arm 21a.
- the housing hole 25a acts as second hinging means of the rod 22a along a second hinging axis Y2, parallel to the second axis of rotation X2 and located distanced from the latter at a second distance H2.
- first axis of rotation X1 and the second axis of rotation X2 can be parallel to each other.
- the first lever 16a, the rocker arm 21a and the rod 22a define a kinematism, that can be the articulated quadrilateral type, in which the first lever 16a and the rocker arm 21a are configured to rotate and pivot horizontally respectively around the first axis of rotation X1 and around the second axis of rotation X2, while the rod 22a is configured to translate or perform a roto-translation on a plane orthogonal to the axes of rotation X1, X2 and to the hinging axes Y1 and Y2.
- the first distance H1 can be equal to the second distance H2, and the consequent kinematism can be the articulated parallelogram type.
- the support frame 20a can include one or more guide blocks 26a, which can be defined by an inclined wall, or inclined plane 126a, and a positioning seating 226a, the latter positioned at one end of the inclined plane 126a.
- the frame 20a comprises four guide blocks 26a, one pair of which is positioned in proximity to the first lever 16a, and one pair positioned in proximity to the rocker arm 21a.
- the distance between the two pairs of guide blocks 26a is substantially equal to the length of the rod 22a.
- the guide blocks 26a are disposed so that the inclined planes 126a are all parallel to each other and that the positioning seatings 226a are all located at a same first height Q1 with respect to a base surface 120a of the frame 20a.
- the positioning seatings 226a can typically have a concave or convex shape, and in any case have a homologous shape with respect to the shape of the thrust segment 116a and of the connection end 221a of the rocker arm 21a.
- the thrust segment 116a rests on two corresponding positioning seatings 226a and is housed at least partly inside them.
- connection end 221a of the rocker arm 21a rests on the positioning seatings 226a of the other pair with respect to those on which the thrust segment 116a rests, and is housed at least partly inside them.
- the mating shape of the positioning seatings 226a with respect to the thrust segment 116a and to the connection end 221a allows a firm positioning, even if it is removable, of the first bristle movement mechanism 12 in its activated position.
- the thrust segment 116a and the connection end 221a can be in contact with the corresponding inclined planes 126a ( figs. 3b and 6 ), or can be completely released from the guide blocks 26a ( fig. 5 ).
- the passage of the bristle movement mechanism 12 from the activated position to the de-activated one, and vice versa, is determined by a rotation of the first lever 16a around the first axis of rotation X1.
- the first lever 16a performs a rotation in a clockwise direction with respect to the first axis of rotation X1, making the thrust segment 116a and the connection end 221b exit, in the first part of the clockwise rotation, from the respective positioning seatings 226a.
- the first lever 16a performs a rotation in an anti-clockwise direction with respect to the first axis of rotation X1.
- the first bristle movement mechanism 12 functions as follows, considering a de-activated initial position.
- the rotation of the first lever 16a around the first axis of rotation X1 determines an equal rotation of the thrust segment 116a, which thrusts the connection end 221a of the rocker arm 21a by means of the rod 22a.
- the horizontally pivoting angle of the rocker arm 21a is equal to the angle of rotation of the first lever 16a.
- the positioning of the guide blocks 26a is such that the rotation of the first lever 16a determines a corresponding sliding of the thrust segment 116a on the inclined planes 126a of the corresponding pair of guide blocks 26a. Moreover, the thrust of the rod 22a determines the corresponding sliding of the connection end 221a of the rocker arm 21a on the inclined planes 126a of the corresponding pair of guide blocks 26a.
- the corresponding sliding described above determines an absolute motion with respect to the upper part 111, downward, that is, away from the rotation pin 23a and from the pivoting end 121a, of the support frame 20a.
- the first group of bristles 14a descends, exiting from the brush bottom 211 when the first lever 16a is rotated in an anti-clockwise direction starting from the de-activated position.
- the second bristle movement mechanism 13 is completely analogous to the first bristle movement mechanism 12 and can include the second lever 16b, a support frame 20b, to which the second group of bristles 14b is attached, a rocker arm 21b and a rod 22b that connects the second lever 16b and the rocker arm 21b.
- the second lever 16b is pivoted on the containing body 11, for example on the upper part 111 of the latter, in correspondence to its rotation pin 23b, which defines a third axis of rotation X3 around which the second lever 16b rotates to make the bristle movement mechanism 13 pass from the activated position ( fig. 4a ) to the de-activated one ( fig. 4b ) and vice versa.
- the rod 22b has a first end portion 122b hinged to a thrust segment 116b of the second lever 16b and a second end portion 222b hinged to a connection end 221b of the rocker arm 21b.
- the end portions 122b and 222b are rotatable with respect to a third hinging axis Y3 and a fourth hinging axis Y4, respectively.
- the rocker arm 21b is pivoted to the containing body 11 of the brush 10, for example to its upper part 111, in correspondence to its pivoting end 121b, and is horizontally pivoting with respect thereto around a fourth axis of rotation X4.
- Third axis of rotation X3 and third hinging axis Y3 can be parallel to each other and located at a third distance H3.
- Fourth axis of rotation X4 and fourth hinging axis Y4 can be parallel to each other and located at a fourth distance H4.
- the third axis of rotation X3 and the fourth axis of rotation X4 can be parallel to each other.
- the third distance H3 and the fourth distance H4 can be equal.
- the axes of rotation X1, X2, X3, X4 can all be parallel to each other.
- the hinging axes Y1, Y2, Y3, Y4 can all be parallel to each other.
- the support frame 20b can include one or more guide blocks 26b, for example four, disposed in two pairs positioned one in proximity to the second lever 16b and one in proximity to the rocker arm 21b.
- the guide blocks 26b can each include an inclined plane 126b, on which the thrust segment 116b of the second lever 16b or the connection end 221b of the rocker arm 21b slides.
- Each guide block 26b can also include a positioning seating 226b, positioned at one end of the inclined plane 126b and configured to at least partly house the thrust segment 116b or the connection end 221b.
- the positioning seatings 226b are located at the same second height Q2 with respect to a base surface 120b of the support frame 20b.
- the second height Q2 is less than said first height Q1, which defines the distance of the positioning seatings 226a with respect to the base surface 120a.
- the functioning of the second bristle movement mechanism 13, analogous to that described above of the first bristle movement mechanism 12, provides that a rotation of the second lever 16b in a clockwise direction allows the passage of the second bristle movement mechanism 13 from the de-activated position ( fig. 4b ) to the activated position ( fig. 4a ) and vice versa.
- the thrust segment 116b moves along the inclined planes 126b of the corresponding guide blocks 26b to move, at the end of the rotation, into the positioning seatings 226b.
- connection end 221b of the latter slides in contact with the inclined planes 126b of the corresponding guide blocks 26b to position itself, at the end of the horizontal pivoting described above, in the positioning seatings 226b.
- the support frame 20b moves downward with respect to the containing body 11, that is, it moves away from the rotation pin 23b and from the pivoting end 121b, when the second bristle movement mechanism 13 passes from the de-activated position to the activated one.
- the support frame 20b moves upward with respect to the containing body 11, that is, it moves nearer the rotation pin 23b and to the pivoting end 121b, determining a corresponding vertical translatory motion of the second group of bristles 14b respectively exiting from the brush bottom 211 and retracting into the containing body 11.
- the support frame 20b of the second bristle movement mechanism 13 is positioned above the support frame 20a of the first bristle movement mechanism 12.
- Fig. 5 is used to describe forms of embodiment of the brush 10 in which it is in its first functioning condition.
- the first bristle movement mechanism 12 is in the de-activated position, while the second bristle movement mechanism 13 is in the activated position.
- the activation of the second bristle movement mechanism 13 makes the support frame 20b of the latter enter into contact with the support frame 20a of the first bristle movement mechanism 12, thrusting it downward.
- Fig. 6 is used to describe forms of embodiment of the brush 10 in which it is in its second functioning condition.
- both the first bristle movement mechanism 12 and the second bristle movement mechanism 13 are in the de-activated position.
- Fig. 7 is used to describe forms of embodiment of the brush 10 in which it is in its third functioning condition.
- the first bristle movement mechanism 12 is in the activated position, while the second bristle movement mechanism 13 is in the de-activated position.
- the bristles of the first group of bristles 14a protrude from the brush bottom 211 by about 4 mm.
- the first quantity L1 is equal to about 2.5 mm, that represents about 60% of the value of the second quantity L2, equal to 4 mm.
- Forms of embodiment can be provided in which the first quantity L1 and the second quantity L2 are equal.
- the first quantity L1 is greater than the second quantity L2.
- the second lever 16b can be provided with a prominent part 27, located in correspondence to the thrust segment 116b and protruding toward the central zone of the support frame 20b.
- the passage from the first functioning condition ( fig. 5 ) to the third functioning condition ( fig.7 ) of the brush 10, and vice versa, can occur directly due to the effect of the contact between the prominent part 27 and the connection end 221a of the rocker arm 21a of the first bristle movement mechanism 12.
- the second lever 16b is configured to make the second bristle movement mechanism 13 assume the activated position and at the same time make the first bristle movement mechanism 12 assume the de-activated position.
- first lever 16a can be configured to make the first bristle movement mechanism 12 assume the activated position and at the same time make the second bristle movement mechanism 13 assume the de-activated position.
- the second functioning condition ( fig. 6 ) can be obtained starting from any of the preceding first ( fig. 5 ) and third ( fig. 7 ) functioning conditions by activating the third lever 16c.
- the latter is pivoted to the containing body 11, for example to the upper part 111 of the latter, and is configured to rotate with respect to its axis of rotation Z, incident, for example substantially orthogonal, with respect to the axes of rotation X1 and X2, respectively of the first lever 16a and of the second lever 16b.
- the third lever 16c can be provided with a de-activation protuberance 28, configured to contact a front protrusion 29 of the first lever 16a and a rear projection 30 of the rocker arm 21b.
- the rear projection 30 is located below the de-activation protuberance 28.
- a rotation of the third lever 16c around its axis of rotation determines the contact between its de-activation protuberance 28 and the rear projection 30.
- This contact determines a rotation of the second lever 16b around the third axis of rotation X3, and consequently, by means of the rod 22b, a rotation of the rocker arm 21b around the fourth axis of rotation X4.
- both the second lever 16b and the rocker arm 21b are released from the positioning seatings 226b, allowing to lift the support frame 20a and with it the support frame 20b, with consequent passage of the second bristle movement mechanism 13 to the de-activated position and the brush 10 to the second functioning condition ( fig. 6 ).
- the front protrusion 29 is located below the de-activation protuberance 28.
- a rotation of the third lever 16c around its axis of rotation determines the contact between its de-activation protuberance 28 and the front protrusion 29. This contact determines a rotation of the first lever 16a around the first axis of rotation X1, and consequently, by means of the first rod 22a, of the rocker arm 21a around the second axis of rotation X2.
- both the first lever 16a and the rocker arm 21a are released from the positioning seatings 226a, with consequent passage of the first bristle movement mechanism 12 to the de-activated position and of the brush 10 to the second functioning condition ( fig. 6 ).
- the brush 10 can include elastic return means, such as for example one or more springs 31, helical, gas, cup or other type, configured to constantly exert an upward thrust against one or both support frames 20a, 20b.
- elastic return means such as for example one or more springs 31, helical, gas, cup or other type, configured to constantly exert an upward thrust against one or both support frames 20a, 20b.
- the springs 31 can perform the function of lifting one or both support frames 20a, 20b, even independently from each other, when the respective bristle movement mechanisms 12, 13 are de-activated.
- the springs 31 can perform the function of lifting the support frames 20a and 20b, when the third lever 16c is driven.
- Another function of the springs 31 is to maintain, by means of the thrust force, the thrust segments 116a, 116b and the connection ends 221a, 221b in the respective positioning seatings 226a, 226b when the first bristle movement mechanism 12 and/or the second bristle movement mechanism 13 are in the activated position.
- both a first pair of springs 31a acting on the support frame 20a, and a second pair of springs 31b acting on the support frame 20b are provided.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Brushes (AREA)
Description
- The present invention concerns a brush usable as an end accessory on cleaning equipment, such as vacuum cleaners, electric brushes, combined apparatuses to vacuum and wash floors , or centralized domestic vacuum plants.
- In particular, the present invention is usable both for cleaning smooth surfaces or surfaces covered by tiles, or parquet made of wood or any of its by-products or substitutes, or with laminate or any other polymer coverings, or for cleaning rugs or fitted carpets or other surfaces covered in fabric, for example cushions or furnishing elements.
- It is known to use nozzles and/or brushes of different sizes and conformations as end accessories for cleaning equipment, with the purpose of adapting the function and efficiency of such equipment depending on the different cleaning conditions that occur on each occasion.
- These accessories are normally studied for specific purposes and therefore are generally configured to be removable and replaceable on the basis of their possibilities and opportunities for use.
- Brushes for generic use are known, suitable for sucking up dust and gathering dirt present on common surfaces, smooth and resistant, such as floors with tiles, laminate floors, floors with resin or polymer layers of various types.
- In proximity to the suction apertures, this type of brush generally has one or more rows of plastic bristles, which must be both flexible and resistant and normally have an average hardness.
- Brushes are also known studied specifically for suction on surfaces in fabric, such as for example fitted carpet, rugs or cushions. These brushes can be provided with hard bristles, shorter than those used on the surfaces described above, or, instead of bristles, strips of velvet or other material, or wheels, which allow sliding on the fabric surfaces and/or the electrostatic capture of the dust or other residues of dirt.
- Brushes are also known for exclusive use on delicate surfaces, for example those covered in parquet or the so-called pre-finished wood flooring, or with marble or glass slabs. These brushes have bristles made of natural or synthetic materials characterized by great flexibility and lower rigidity than those brushes used for more resistant surfaces.
- Other known brushes are dual-purpose, that is, they act both as generic brush for cleaning common smooth surfaces and also allow to clean surfaces in fabric. These known brushes are generally provided with retractable bristles and a containing body configured to house them either partly or completely inside it.
- It is common usage that the passage from one function to the other of dual-purpose brushes is determined by the retraction of the bristles by means of a retraction mechanism housed inside the containing body. The mechanism is usually driven by means of a pedal lever at least partly outside the containing body and accessible from the outside.
- On the basis of the above, it is clear that one disadvantage of the state of the art is that to make cleaning equipment versatile, a plurality of end accessories must be associated to it, among which at least two or three brushes, which are at the most dual-purpose.
- Another disadvantage of known brushes, in particular those that are dual-purpose, is that they are generally bulky and heavy, because of the mass of components housed in the containing body.
- One purpose of the present invention is to make a brush for cleaning equipment that is able to have a plurality of functions, determining high versatility and efficiency of the cleaning equipment to which it is associated, and that allows to reduce the number of accessories needed for cleaning surfaces of different nature and characteristics.
- Another purpose is to make a brush that is at the same time multi-functional, light, simple to make and use, and consisting of a reduced number of components.
- The prior art document
US 5652997 A , on which the preamble of the main claim is based, describes a tool for a vacuum cleaner in which there are two groups of bristles, which can simultaneously assume a retracted position inside the containing body, a protruding position with respect to the containing body, or a position in which a first group is in a retracted position and the other group is in a protruding position. - The Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
- The present invention is set forth and characterized in the independent claim, while the dependent claims describe other characteristics of the invention or variants to the main inventive idea.
- In accordance with the above purposes, a brush for cleaning equipment according to the present invention comprises a containing body, a plurality of bristles, bristle command and movement means able to be selectively activated in order to make the brush assume a first functioning condition in which all the bristles protrude from the containing body, and a second functioning condition in which all the bristles are completely retracted inside the containing body.
- The bristle command and movement means can be selectively activated to make the brush also assume a third functioning condition in which at least a first group of bristles protrudes outside the containing body and at least one group of bristles is completely retracted inside it.
- The brush according to the present invention therefore has the advantage of being able to assume three distinct functioning conditions. This, together with the division of the bristles into groups, gives a greater versatility and flexibility of use of the brush, which can therefore be advantageously used in several situations where there is dirt, whether it is coarse, normal or fine, and for almost all surfaces to be cleaned, whether they are smooth, have grooves, are resistant, delicate or in fabric.
- Another advantage of the present invention is that it allows to reduce the number of accessories for cleaning machines needed by a user, containing a plurality of functions in one brush.
- In some forms of embodiment, in the third functioning condition, the amount by which the first group of bristles protrudes from the containing body is greater than the amount by which all the bristles protrude from the containing body in the first functioning condition.
- The present invention also concerns forms of embodiment in which the amount by which the first group of bristles protrudes from the containing body in the third functioning condition is less than or equal to the amount by which all the bristles protrude from the containing body in the first functioning condition.
- This allows to obtain at least two different heights of the suction mouths of the brush, outside the containing body, with respect to the surface to be cleaned, so that it is thus possible to manage different suction efficiencies, depending on needs.
- According to a characteristic aspect of the present invention, the bristle command and movement means comprise at least a first bristle movement mechanism connected to the first group of bristles and a first command lever selectively drivable to make the first bristle movement mechanism assume an activated position, in which the first group of bristles protrudes from the containing body by a desired quantity, and a de-activated position in which the first group of bristles is completely retracted inside the containing body.
- Moreover, according to the invention, the bristle command and movement means also comprise a second bristle movement mechanism connected to the second group of bristles, and a second command lever selectively drivable to make the first bristle movement mechanism assume a partly activated position and the second bristle movement mechanism simultaneously assume an activated position, in which both the first and the second group of bristles partly protrude from the containing body of the brush, wherein the second bristle movement mechanism is configured to simultaneously move the first group of bristles and the second group of bristles.
- In some implementations of the present invention, the brush can also comprise a third lever which, whatever the bristle movement mechanism is in the activated position, determines the passage to the de-activated position.
- These and other characteristics of the present invention will become apparent from the following description of some forms of embodiment, given as a non-restrictive example with reference to the attached drawings wherein:
-
fig. 1 is a plan view of a brush according to the present invention; -
figs. 2a-2c are schematic views from below of the brush infig. 1 in three different functioning conditions; -
figs. 3a and 3b are three-dimensional views of a component of the brush infig. 1 in two respective functioning positions; -
figs. 4a and 4b are three-dimensional views of another component of the brush infig. 1 in two respective functioning positions; -
figs. 5 to 7 are section views of the brush infig. 1 from S to S, in three respective functioning conditions; -
fig. 8 is a section view of the brush infig. 1 from VIII to VIII. - With reference to
fig. 1 , a brush according to the present invention is indicated in its entirety by thereference number 10 and is configured to be associated as an end accessory to cleaning equipment, such as vacuum cleaners, electric brushes, or other equipment to suck up dust or other particles from a surface. - The
brush 10 includes a containingbody 11 that defines the main structure and the external conformation of thebrush 10. - The containing
body 11 can be defined by a single shell, continuous and in a single piece, or by a plurality of parts connected to each other to define a closed body, such as, in the solutions described with reference to the attached drawings, anupper part 111, and a lower part orbrush bottom 211, or again a front part and a rear part, or combinations of these solutions. - The containing
body 11 contains two mechanisms configured to move the bristles 14 exiting from and retracting into the containingbody 11. - The reference to the two mechanisms is used in the present description merely as an example of possible movement and command means of the bristles 14, and is not intended to limit the field of protection of the present invention. The two mechanisms include a first
bristle movement mechanism 12 and a secondbristle movement mechanism 13. - The first
bristle movement mechanism 12 is configured to move a first group ofbristles 14a and the secondbristle movement mechanism 13 is configured to move a second group ofbristles 14b. - In the
upper part 111 of the containing body 11a first throughaperture 15a is made in which afirst command lever 16a of the firstbristle movement mechanism 12 is inserted so as to partly protrude from theupper part 111. - In the
upper part 111 of the containing body 11a second throughaperture 15b is also made, in which asecond command lever 16b of the secondbristle movement mechanism 13 is inserted so as to partly protrude from theupper part 111. - A third through
aperture 15c is made in theupper part 111 of the containingbody 11 and houses athird lever 16c to retract the bristles 14, partly protruding from theupper part 111 and cooperating with both thebristle movement mechanisms - The
first lever 16a, thesecond lever 16b and thethird lever 16c partly protrude from theupper part 111 of the containingbody 11 to be selectively driven from the outside by a user, for example manually, before the installation of thebrush 10 in the cleaning equipment, or with a foot after the installation of thebrush 10 and/or during use of the equipment. - The reference to the
levers brush 10 is provided with a single command lever, or other forms of embodiment in which thebrush 10 includes movement and command means which can be driven remotely, without command levers and/or movement mechanisms. - In this case, the selective drive of the
first lever 16a, thesecond lever 16b and thethird lever 16c determines the command to activate or de-activate one or bothbristle movement mechanisms - After this selective drive, the
brush 10 can assume three functioning conditions, depending on the surfaces to be cleaned, as will be described in detail hereafter. - Moreover, the containing
body 11 conventionally contains asuction pipe 17 that conveys the dust or particles from the surface to be cleaned toward the body of the cleaning equipment. - In
figs. 2a to 2c asuction mouth 18 is visible that communicates with thesuction pipe 17 and represents its aperture toward the surface to be cleaned. - In the same figs. from 2a to 2c, for convenience and graphic clarity, only the
brush bottom 211 is shown, without intending to limit the solutions of the present invention, and with the present description continuing to refer also to theupper part 111 of the containingbody 11. -
Fig. 2a is used to schematically describe a first functioning condition of thebrush 10, in which all the bristles 14, that is, not only those of the first group ofbristles 14a but also those of the second group ofbristles 14b, protrude from thebrush bottom 211. In this condition, a suction chamber is created which is almost completely closed, since the bristles 14 are positioned both to the front and to the rear with respect to thesuction mouth 18. -
Fig. 2b is used to schematically describe a second functioning condition of thebrush 10, in which all the bristles 14 are retracted inside the containingbody 11, and therefore neither those of the first group ofbristles 14a, nor those of the second group ofbristles 14b protrude therefrom. In this case, contact with the surface to be cleaned is established by means ofwheels 19, in this case present in correspondence to the rear zone of thebrush bottom 211, in proximity to the part of thebrush 10 configured to be coupled with the cleaning equipment. - In some forms of embodiment, there can also be possible
further wheels 19 in proximity to thesuction mouth 18. - Other solutions can provide, instead of the
further wheels 19, inserts made of velvet or plastic material. -
Fig. 2c is used to schematically describe a third functioning condition of thebrush 10, in which only a part of the bristles 14, in this case only those of the first group ofbristles 14a, protrudes from thebrush bottom 211. - The first functioning condition (
fig. 2a ) can be adopted for the usual cleaning of smooth floors which are conventionally resistant, for example ceramic tiles; the second functioning condition (fig. 2b ) can be adopted to clean surfaces in fabric, for example fitted carpets or rugs, or surfaces with big grooves; while the third functioning condition (fig. 2c ) can be adopted for delicate floors, for example parquet, and/or conditions of coarse dirt. -
Figs. 3a and 3b are used to describe forms of embodiment of the firstbristle movement mechanism 12, which is configured to move the bristles of the first group ofbristles 14a vertically. - In
fig, 3a , the firstbristle movement mechanism 12 is shown in an activated position, that is, with the first group ofbristles 14a lowered, whilefig. 3b shows a de-activated position, or retraction position of the first group ofbristles 14a. -
Figs. 4a and 4b are used to describe forms of embodiment of the secondbristle movement mechanism 13, which is configured to move the bristles of the second group ofbristles 14b vertically. - In
fig. 4a , the secondbristle movement mechanism 13 is shown in an activated position, or lowered position of the second group ofbristles 14b, whilefig. 4b shows a de-activated position, or retracted position, of the second group ofbristles 14b. - The first
bristle movement mechanism 12 can be connected to thefirst lever 16a and include asupport frame 20a, to which the first group ofbristles 14a is attached, arocker arm 21a and arod 22a which connects thefirst lever 16a and therocker arm 21a. - The
first lever 16a is pivoted on the containingbody 11, for example on itsupper part 111, in correspondence with itsrotation pin 23a, which defines a first axis of rotation X1 around which thefirst lever 16a rotates in order to make the firstbristle movement mechanism 12 pass from the activated position to the de-activated one, and vice versa. - The
rocker arm 21a is provided with apivoted end 121a, rotatably connected to the containingbody 11, for example to itsupper part 111, so as to define a second axis of rotation X2. - The
rod 22a can have afirst end portion 122a, hinged to thefirst lever 16a in correspondence to athrust segment 116a of the latter, and asecond end portion 222a, opposite thefirst end portion 122a, hinged to aconnection end 221a of therocker arm 21a, opposite with respect to the pivotingend 121a of the latter. - In some forms of embodiment, such as those shown by way of example in the attached drawings, the
rod 22a can be C-shaped and theend portions - In the specific case, the
rod 22a is hinged to thefirst lever 16a by inserting itsfirst end portion 122a in two throughholes 24a (only one of which is visible infig. 3a ) aligned along a first hinging axis Y1, parallel to the first axis of rotation X1. - The through
holes 24a act as first hinging means and are positioned at a first distance H1 from therotation pin 23a. - The first distance H1 defines the distance between the first axis of rotation X1 and the first hinging axis Y1.
- Moreover, the
rod 22a is hinged to therocker arm 21a by inserting itssecond end portion 222a in ahousing hole 25a made through in theconnection end 221b of therocker arm 21a. - In this way, the
housing hole 25a acts as second hinging means of therod 22a along a second hinging axis Y2, parallel to the second axis of rotation X2 and located distanced from the latter at a second distance H2. - In some forms of embodiment, the first axis of rotation X1 and the second axis of rotation X2 can be parallel to each other.
- On the basis of the above, the
first lever 16a, therocker arm 21a and therod 22a define a kinematism, that can be the articulated quadrilateral type, in which thefirst lever 16a and therocker arm 21a are configured to rotate and pivot horizontally respectively around the first axis of rotation X1 and around the second axis of rotation X2, while therod 22a is configured to translate or perform a roto-translation on a plane orthogonal to the axes of rotation X1, X2 and to the hinging axes Y1 and Y2. - In possible implementations, the first distance H1 can be equal to the second distance H2, and the consequent kinematism can be the articulated parallelogram type.
- Other implementations can provide any other type of kinematism suitable to move the bristles 14, of which the present description supplies only one example solution.
- The
support frame 20a can include one ormore guide blocks 26a, which can be defined by an inclined wall, orinclined plane 126a, and apositioning seating 226a, the latter positioned at one end of theinclined plane 126a. - In the specific case described with reference to
figs. 3a and 3b , merely by way of example, theframe 20a comprises fourguide blocks 26a, one pair of which is positioned in proximity to thefirst lever 16a, and one pair positioned in proximity to therocker arm 21a. - The distance between the two pairs of
guide blocks 26a is substantially equal to the length of therod 22a. - The guide blocks 26a are disposed so that the
inclined planes 126a are all parallel to each other and that thepositioning seatings 226a are all located at a same first height Q1 with respect to abase surface 120a of theframe 20a. - The
positioning seatings 226a can typically have a concave or convex shape, and in any case have a homologous shape with respect to the shape of thethrust segment 116a and of theconnection end 221a of therocker arm 21a. - With reference to
figs. 3a and7 , when the firstbristle movement mechanism 12 is in the activated position, thethrust segment 116a rests on twocorresponding positioning seatings 226a and is housed at least partly inside them. - In the same way, when the first
bristle movement mechanism 12 is in the activated position, also theconnection end 221a of therocker arm 21a rests on thepositioning seatings 226a of the other pair with respect to those on which thethrust segment 116a rests, and is housed at least partly inside them. - The mating shape of the
positioning seatings 226a with respect to thethrust segment 116a and to theconnection end 221a allows a firm positioning, even if it is removable, of the firstbristle movement mechanism 12 in its activated position. - With reference to
figs. 3b ,5 and 6 , when the firstbristle movement mechanism 12 is in the de-activated position, thethrust segment 116a and theconnection end 221a are released from thecorresponding positioning seatings 226a. - In this position, the
thrust segment 116a and theconnection end 221a can be in contact with the correspondinginclined planes 126a (figs. 3b and6 ), or can be completely released from the guide blocks 26a (fig. 5 ). - The passage of the
bristle movement mechanism 12 from the activated position to the de-activated one, and vice versa, is determined by a rotation of thefirst lever 16a around the first axis of rotation X1. - In the case shown here by way of example, to make the first
bristle movement mechanism 12 pass from the activated position (fig. 3a ) to the de-activated one (fig. 3b ), thefirst lever 16a performs a rotation in a clockwise direction with respect to the first axis of rotation X1, making thethrust segment 116a and theconnection end 221b exit, in the first part of the clockwise rotation, from therespective positioning seatings 226a. - Vice versa, to make the
bristle movement mechanism 12 pass from the de-activated position (fig. 3b ) to the activated one (fig. 3a ), thefirst lever 16a performs a rotation in an anti-clockwise direction with respect to the first axis of rotation X1. - Alternative forms of embodiment also come within the field of protection of the present invention, in which the rotations of the
first lever 16a are inverted. - The first
bristle movement mechanism 12 functions as follows, considering a de-activated initial position. - The rotation of the
first lever 16a around the first axis of rotation X1 determines an equal rotation of thethrust segment 116a, which thrusts theconnection end 221a of therocker arm 21a by means of therod 22a. - Since it has its pivoted
end 121a attached to theupper part 111 of the containingbody 11, therocker arm 21a will move in a horizontally pivoting motion around the second pivoting axis X2. - In this case, the horizontally pivoting angle of the
rocker arm 21a is equal to the angle of rotation of thefirst lever 16a. - The positioning of the
guide blocks 26a is such that the rotation of thefirst lever 16a determines a corresponding sliding of thethrust segment 116a on theinclined planes 126a of the corresponding pair ofguide blocks 26a. Moreover, the thrust of therod 22a determines the corresponding sliding of theconnection end 221a of therocker arm 21a on theinclined planes 126a of the corresponding pair ofguide blocks 26a. - The fact that the
end portions 112a, 222a of therod 22a are rotatable around respective hinging axes Y1, Y2, makes the rod move with a flat motion on a plane orthogonal to both the hinging axes Y1, Y2, and to the axes of rotation X1 and X2. - Since the
rotation pin 23a and the pivotingend 121a are attached to the containingbody 11 of thebrush 10, for example to itsupper part 111, the corresponding sliding described above determines an absolute motion with respect to theupper part 111, downward, that is, away from therotation pin 23a and from the pivotingend 121a, of thesupport frame 20a. - In this way, the first group of
bristles 14a descends, exiting from thebrush bottom 211 when thefirst lever 16a is rotated in an anti-clockwise direction starting from the de-activated position. - The rotation ends when the
thrust segment 116a and theconnection end 221a cooperate with thepositioning seatings 226a. - After a clockwise rotation of the
first lever 16a, when the firstbristle movement mechanism 12 is in an activated position, as infig. 3a , an upward movement of thesupport frame 20a follows, that is, toward therotation pin 23 a and the pivotingend 121a (fig. 3b ), retracting the first group ofbristles 14a. - With reference to
figs. 4a and 4b , the secondbristle movement mechanism 13 is completely analogous to the firstbristle movement mechanism 12 and can include thesecond lever 16b, asupport frame 20b, to which the second group ofbristles 14b is attached, arocker arm 21b and arod 22b that connects thesecond lever 16b and therocker arm 21b. - The
second lever 16b is pivoted on the containingbody 11, for example on theupper part 111 of the latter, in correspondence to itsrotation pin 23b, which defines a third axis of rotation X3 around which thesecond lever 16b rotates to make thebristle movement mechanism 13 pass from the activated position (fig. 4a ) to the de-activated one (fig. 4b ) and vice versa. - The
rod 22b has afirst end portion 122b hinged to athrust segment 116b of thesecond lever 16b and asecond end portion 222b hinged to aconnection end 221b of therocker arm 21b. - The
end portions - The
rocker arm 21b is pivoted to the containingbody 11 of thebrush 10, for example to itsupper part 111, in correspondence to its pivotingend 121b, and is horizontally pivoting with respect thereto around a fourth axis of rotation X4. - Third axis of rotation X3 and third hinging axis Y3 can be parallel to each other and located at a third distance H3.
- Fourth axis of rotation X4 and fourth hinging axis Y4 can be parallel to each other and located at a fourth distance H4.
- In some forms of embodiment, the third axis of rotation X3 and the fourth axis of rotation X4 can be parallel to each other.
- In possible implementations, the third distance H3 and the fourth distance H4 can be equal.
- In other forms of embodiment, combinable with those described above, the axes of rotation X1, X2, X3, X4 can all be parallel to each other.
- In still other forms of embodiment, combinable with those described above, the hinging axes Y1, Y2, Y3, Y4 can all be parallel to each other.
- It is also possible that the axes of rotation X1, X2, X3, X4 and the hinging axes Y1, Y2, Y3, Y4 are all parallel to each other.
- The
support frame 20b can include one ormore guide blocks 26b, for example four, disposed in two pairs positioned one in proximity to thesecond lever 16b and one in proximity to therocker arm 21b. - The guide blocks 26b can each include an
inclined plane 126b, on which thethrust segment 116b of thesecond lever 16b or theconnection end 221b of therocker arm 21b slides. - Each
guide block 26b can also include apositioning seating 226b, positioned at one end of theinclined plane 126b and configured to at least partly house thethrust segment 116b or theconnection end 221b. - The positioning seatings 226b are located at the same second height Q2 with respect to a
base surface 120b of thesupport frame 20b. - The second height Q2 is less than said first height Q1, which defines the distance of the
positioning seatings 226a with respect to thebase surface 120a. - The functioning of the second
bristle movement mechanism 13, analogous to that described above of the firstbristle movement mechanism 12, provides that a rotation of thesecond lever 16b in a clockwise direction allows the passage of the secondbristle movement mechanism 13 from the de-activated position (fig. 4b ) to the activated position (fig. 4a ) and vice versa. - As the
rotation pin 23b and the pivotingend 121b remain stationary, the rotation of thesecond lever 16b around the third axis of rotation X3 determines a rotation of thethrust segment 116b, which thrusts therod 22b to make therocker arm 21b pivot horizontally around the fourth axis of rotation X4. - Simultaneously with the rotation of the
second lever 16b, thethrust segment 116b moves along theinclined planes 126b of the corresponding guide blocks 26b to move, at the end of the rotation, into thepositioning seatings 226b. - Simultaneously with the horizontal pivoting of the
rocker arm 21b, theconnection end 221b of the latter slides in contact with theinclined planes 126b of the corresponding guide blocks 26b to position itself, at the end of the horizontal pivoting described above, in thepositioning seatings 226b. - Due to the effect of the relative motion of the
thrust segment 116b and of theconnection end 221b with respect to theinclined planes 126b, thesupport frame 20b moves downward with respect to the containingbody 11, that is, it moves away from therotation pin 23b and from the pivotingend 121b, when the secondbristle movement mechanism 13 passes from the de-activated position to the activated one. In the opposite case, thesupport frame 20b moves upward with respect to the containingbody 11, that is, it moves nearer therotation pin 23b and to the pivotingend 121b, determining a corresponding vertical translatory motion of the second group ofbristles 14b respectively exiting from thebrush bottom 211 and retracting into the containingbody 11. - With reference to
figs. 5, 6 and7 , in which thebrush 10 is shown assembled, it shows how the assembly provides that the secondbristle movement mechanism 13 is positioned above the firstbristle movement mechanism 12. - In particular, the
support frame 20b of the secondbristle movement mechanism 13 is positioned above thesupport frame 20a of the firstbristle movement mechanism 12. -
Fig. 5 is used to describe forms of embodiment of thebrush 10 in which it is in its first functioning condition. - In this first functioning condition of the
brush 10, all the bristles 14, of both the first group ofbristles 14a and the second group ofbristles 14b, protrude from thebrush bottom 211. - In the first functioning condition, the first
bristle movement mechanism 12 is in the de-activated position, while the secondbristle movement mechanism 13 is in the activated position. - The activation of the second
bristle movement mechanism 13 makes thesupport frame 20b of the latter enter into contact with thesupport frame 20a of the firstbristle movement mechanism 12, thrusting it downward. - This downward movement is due to the fact that the second height Q2 at which the
positioning seatings 226b are situated is lower than the first height Q1 at which thepositioning seatings 226a are situated. Consequently, the downward movement of thesupport frame 20b, and therefore of theframe 20a, is less than that that the latter could have with the activation of the firstbristle movement mechanism 12. -
Fig. 6 is used to describe forms of embodiment of thebrush 10 in which it is in its second functioning condition. - In the second functioning condition, both the first
bristle movement mechanism 12 and the secondbristle movement mechanism 13 are in the de-activated position. - In this second functioning condition all the bristles 14 are contained inside the containing
body 11 of thebrush 10, which can rest on any possible surface to be cleaned with thewheels 19. -
Fig. 7 is used to describe forms of embodiment of thebrush 10 in which it is in its third functioning condition. - In the third functioning condition, the first
bristle movement mechanism 12 is in the activated position, while the secondbristle movement mechanism 13 is in the de-activated position. - In this condition, only the bristles of the first group of
bristles 14a protrude by a second quantity L2, equal to almost the whole of its height, from thebrush bottom 211, while the bristles of the second group ofbristles 14b are completely enclosed within the containingbody 11 of thebrush 10. - In the case described by way of example here, the bristles of the first group of
bristles 14a protrude from thebrush bottom 211 by about 4 mm. - Since the movement of the
support frame 20a in this functioning condition is linked exclusively to the first height Q1, it is higher than the first functioning condition of thebrush 10 described above. - Consequently, only the first group of
bristles 14a protrudes by a second quantity L2, greater than the first quantity L1 by which the bristles 14 protrude in the first functioning condition of thebrush 10. - In the case described by way of example here, the first quantity L1 is equal to about 2.5 mm, that represents about 60% of the value of the second quantity L2, equal to 4 mm.
- Forms of embodiment can be provided in which the first quantity L1 and the second quantity L2 are equal.
- In other forms of embodiment, the first quantity L1 is greater than the second quantity L2.
- In some forms of embodiment, described with reference to
figs. 5 and7 , thesecond lever 16b can be provided with aprominent part 27, located in correspondence to thethrust segment 116b and protruding toward the central zone of thesupport frame 20b. - The passage from the first functioning condition (
fig. 5 ) to the third functioning condition (fig.7 ) of thebrush 10, and vice versa, can occur directly due to the effect of the contact between theprominent part 27 and theconnection end 221a of therocker arm 21a of the firstbristle movement mechanism 12. - In this way, the
second lever 16b is configured to make the secondbristle movement mechanism 13 assume the activated position and at the same time make the firstbristle movement mechanism 12 assume the de-activated position. - Similarly, the
first lever 16a can be configured to make the firstbristle movement mechanism 12 assume the activated position and at the same time make the secondbristle movement mechanism 13 assume the de-activated position. - Indeed, rotating the
first lever 16a, theprominent part 27 is thrust by theconnection end 221a, moved in its turn by therod 22a, de-activating the secondbristle movement mechanism 13, if it is in the activated position. - In the same way, when the first
bristle movement mechanism 12 is in the activated position, by rotating thesecond lever 16b theprominent part 27 thrusts theconnection end 221a and, by means of therod 22a, thethrust segment 116a of thefirst lever 16a, de-activating the firstbristle movement mechanism 12. - With reference to
figs. 5, 6 and7 , the second functioning condition (fig. 6 ) can be obtained starting from any of the preceding first (fig. 5 ) and third (fig. 7 ) functioning conditions by activating thethird lever 16c. - The latter is pivoted to the containing
body 11, for example to theupper part 111 of the latter, and is configured to rotate with respect to its axis of rotation Z, incident, for example substantially orthogonal, with respect to the axes of rotation X1 and X2, respectively of thefirst lever 16a and of thesecond lever 16b. - The
third lever 16c can be provided with ade-activation protuberance 28, configured to contact afront protrusion 29 of thefirst lever 16a and arear projection 30 of therocker arm 21b. - In the first functioning condition of the brush 10 (
fig. 5 ), therear projection 30 is located below thede-activation protuberance 28. A rotation of thethird lever 16c around its axis of rotation determines the contact between itsde-activation protuberance 28 and therear projection 30. This contact determines a rotation of thesecond lever 16b around the third axis of rotation X3, and consequently, by means of therod 22b, a rotation of therocker arm 21b around the fourth axis of rotation X4. - In this way, both the
second lever 16b and therocker arm 21b are released from thepositioning seatings 226b, allowing to lift thesupport frame 20a and with it thesupport frame 20b, with consequent passage of the secondbristle movement mechanism 13 to the de-activated position and thebrush 10 to the second functioning condition (fig. 6 ). - In the third functioning condition of the brush 10 (
fig. 7 ), thefront protrusion 29 is located below thede-activation protuberance 28. A rotation of thethird lever 16c around its axis of rotation determines the contact between itsde-activation protuberance 28 and thefront protrusion 29. This contact determines a rotation of thefirst lever 16a around the first axis of rotation X1, and consequently, by means of thefirst rod 22a, of therocker arm 21a around the second axis of rotation X2. - In this way, both the
first lever 16a and therocker arm 21a are released from thepositioning seatings 226a, with consequent passage of the firstbristle movement mechanism 12 to the de-activated position and of thebrush 10 to the second functioning condition (fig. 6 ). - In some forms of embodiment, described with reference by way of example to
fig. 8 , thebrush 10 can include elastic return means, such as for example one ormore springs 31, helical, gas, cup or other type, configured to constantly exert an upward thrust against one or bothsupport frames - The
springs 31 can perform the function of lifting one or bothsupport frames movement mechanisms - The
springs 31 can perform the function of lifting the support frames 20a and 20b, when thethird lever 16c is driven. - Another function of the
springs 31 is to maintain, by means of the thrust force, thethrust segments respective positioning seatings bristle movement mechanism 12 and/or the secondbristle movement mechanism 13 are in the activated position. - In forms of embodiment described with the aid of
fig. 8 , both a first pair ofsprings 31a acting on thesupport frame 20a, and a second pair ofsprings 31b acting on thesupport frame 20b are provided. - Other forms of embodiment, not shown in the drawings, can provide the presence of a single pair of springs, or the presence of mechanical return means, for example connected to the
first lever 16a and/or thesecond lever 16b, so that no elastic means, such as thesprings 31, are present. - It is clear that modifications and/or additions of parts may be made to the
brush 10 for cleaning equipment as described heretofore, without departing from the field and scope of the present invention. - It is also clear that, although the present invention has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of brush for cleaning equipment, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
Claims (8)
- Brush for cleaning equipment, comprising a containing body (11), a plurality of bristles (14), bristle command and movement means (16a, 16b, 16c, 12, 13) able to be selectively activated in order to make said brush (10) assume a first functioning condition in which all the bristles (14) protrude from a lower part (211) of said containing body (11), and a second functioning condition in which all the bristles (14) are completely retracted inside said containing body (11), wherein said bristle command and movement means (16a, 16b, 16c, 12, 13) are able to be selectively activated to make said brush (10) also assume a third functioning condition in which at least a first group of bristles (14a) protrudes from said lower part (211) of said containing body (11) and at least a second group of bristles (14b) is completely retracted inside said containing body (11), wherein said bristle command and control means (16a, 16b, 16c, 12, 13) comprise at least a first bristle movement mechanism (12) connected to said first group of bristles (14a) and a first command lever (16a) selectively drivable to make said first bristle movement mechanism (12) assume at least an activated position, in which at least said first group of bristles (14a) protrudes from said lower part (211) of the containing body (11) by said first quantity (L1), and wherein said bristle command and movement means (16a, 16b, 16c, 12, 13) comprise a second bristle movement mechanism (13) connected to said second group of bristles (14b), and a second command lever (16b) selectively drivable to make said second bristle movement mechanism (13) assume an activated position in which at least said second group of bristles (14b) at least partly protrudes from said lower part (211) of said containing body (11), characterized in that said second bristle movement mechanism (13) is configured to simultaneously move said first group of bristles (14a) and said second group of bristles (14b).
- Brush as in claim 1, characterized in that, in said first functioning condition, the bristles (14) protrude from the lower part (211) of the containing body (11) by a first quantity (L1) and in that in said third functioning condition the at least one first group of bristles (14a) protrudes from the lower part (211) of the containing body (11) by a second quantity (L2), greater than or equal to said first quantity (L1).
- Brush as in claim 1, characterized in that, in said first functioning condition, the bristles (14) protrude from the lower part (211) of the containing body (11) by a first quantity (L1) and in that in said third functioning condition the at least one first group of bristles (14a) protrudes from the lower part (211) of the containing body (11) by a second quantity (L2), less than or equal to said first quantity (L1).
- Brush as in any of the claims from 1 to 3, characterized in that said first lever (16a) is connected to said containing body (11) in correspondence to its own rotation pin (23a) and is provided with a thrust segment (116a), said first bristle movement mechanism (12) comprising a rocker arm (21a) provided with a pivoting end (121a) pivoted to said containing body (11) and with a connection end (221a), said first lever (16a) and said rocker arm (21a) being configured to vertically move a support frame (20a) of said first group of bristles (14a).
- Brush as in any of the claims from 1 to 4, characterized in that said second lever (16b) is connected to said containing body (11) in correspondence to its own rotation pin (23b), and is provided with a thrust segment (116b), said second bristle movement mechanism (13) comprising a rocker arm (21b) provided with a pivoting end (121b) pivoted to said containing body (11) and with a connection end (221b), said second lever (16b) and said rocker arm (21b) being configured to vertically move a support frame (20b) of said second group of bristles (14b).
- Brush as in any claim hereinbefore, characterized in that at least one of either said first bristle movement mechanism (12) or said second bristle movement mechanism (13) comprises a plurality of guide blocks (26a, 26b) each having a positioning seating (226a, 226b) raised with respect to a base surface (120a, 120b) of said support frame (20a, 20b), and in that in the activated position of at least one of either the first (12) or the second (13) bristle movement mechanism, the connection end (221a, 221b) of said rocker arm (21a, 21b) and at least one of either the thrust segment (116a, 116b) of the first lever (16a) or that of the second lever (16b) are at least partly housed in corresponding positioning seatings (226a, 226b).
- Brush as in claim 6, characterized in that said second lever (16b) is provided, in correspondence to its own thrust segment (116b), with a prominent part (27) which, in said activated position of the second bristle movement mechanism (13), is in contact with the connection end (221a) of the rocker arm (21a) of the first bristle movement mechanism (12), in order to maintain said connection end (221a) completely outside said one or more positioning seatings (226a).
- Brush as in any claim hereinbefore, characterized in that it comprises a third lever (16c) associated both to said first bristle movement mechanism (12) and also to said second bristle movement mechanism (13) and selectively drivable to make said first bristle movement mechanism (12) and said second bristle movement mechanism (13) simultaneously assume the de-activated position.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000115A ITUD20130115A1 (en) | 2013-09-03 | 2013-09-03 | BRUSH FOR CLEANING EQUIPMENT |
PCT/IB2014/064225 WO2015033277A1 (en) | 2013-09-03 | 2014-09-03 | Brush for cleaning equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3041394A1 EP3041394A1 (en) | 2016-07-13 |
EP3041394B1 true EP3041394B1 (en) | 2017-11-01 |
Family
ID=49263393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14790313.2A Active EP3041394B1 (en) | 2013-09-03 | 2014-09-03 | Brush for cleaning equipment |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3041394B1 (en) |
CN (1) | CN105744870B (en) |
IT (1) | ITUD20130115A1 (en) |
WO (1) | WO2015033277A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112057002A (en) * | 2019-06-10 | 2020-12-11 | 康塔有限公司 | Floor cleaning device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2047677A (en) * | 1933-05-13 | 1936-07-14 | Electrolux Corp | Vacuum cleaner nozzle |
KR960016448B1 (en) * | 1994-12-15 | 1996-12-12 | 대우전자 주식회사 | Accessory nozzle of a vacuum cleaner |
JP2005296621A (en) * | 2004-04-13 | 2005-10-27 | Samsung Kwangju Electronics Co Ltd | Suction brush assembly and vacuum cleaner including the same |
DE102005041810A1 (en) * | 2005-09-02 | 2007-03-08 | BSH Bosch und Siemens Hausgeräte GmbH | Vacuum cleaner floor nozzle with switching device |
GB2470407A (en) * | 2009-05-22 | 2010-11-24 | Dyson Technology Ltd | Attachment for a vacuum cleaning appliance |
-
2013
- 2013-09-03 IT IT000115A patent/ITUD20130115A1/en unknown
-
2014
- 2014-09-03 WO PCT/IB2014/064225 patent/WO2015033277A1/en active Application Filing
- 2014-09-03 CN CN201480060853.2A patent/CN105744870B/en active Active
- 2014-09-03 EP EP14790313.2A patent/EP3041394B1/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
CN105744870A (en) | 2016-07-06 |
EP3041394A1 (en) | 2016-07-13 |
WO2015033277A1 (en) | 2015-03-12 |
CN105744870B (en) | 2018-03-09 |
ITUD20130115A1 (en) | 2015-03-04 |
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