WINDOW CLEANING DEVICE

Abstract

TITLE OF THE INVENTION: WINDOW CLEANING DEVICE The window cleaning device (100) for a window (101) comprises, at least: - a user gripping handle (105), - a wash water reservoir (110), - a wastewater reservoir (115), and - a cleaning head (120), integral with the gripping handle, comprising: - a drive motor (125), - a friction roller (130) comprising a shaft (135) driven by the motor, - a wash water injector (140) connected to the wash water reservoir by a first pipe (145), and - a wastewater suction chute (150) connected to the wastewater reservoir by a second pipe (155). Figure for the abstract: Figure 1

Description

Title of the invention: WINDOW CLEANING DEVICE Technical field of the invention

[0001] The present invention relates to a window cleaning device. It applies, in particular, to the field of window maintenance. State of the art

[0002] For window cleaning, prior art solutions consist of using two separate elements: a flat cleaning surface and a squeegee. The cleaning surface is, for example, a plate soaked in cleaning water that is rubbed against the window. The squeegee then removes the cleaning water from the window. However, such a solution is time-consuming and relies solely on the pressure exerted by the user on the two elements, which can vary.

[0003] Other prior art solutions consist of combining, in a single device, a flat cleaning surface and a squeegee, these two elements being placed side by side. However, such solutions are also based solely on the pressure exerted by the user, which can vary. In some cases, particularly when the surface and the squeegee are located on opposite sides, cleaning the window requires two steps necessitating a constant back-and-forth movement of the device.

[0004] These prior art solutions are therefore time-consuming, cumbersome for the user, and do not produce satisfactory results when the glass is heavily soiled. Thus, such solutions do not allow for effective cleaning of windows. Summary of the invention

[0005] The present invention aims to remedy all or part of these drawbacks.

[0006] The present invention makes it possible to combine the injection of wash water, a cleaning The system uses a rotating roller and vacuums up the wastewater to clean heavily soiled sections of glass. When the device includes a squeegee, this cleaning is completed in a single pass, eliminating the need for a second pass over the same area. Furthermore, vacuuming the wastewater during the cleaning process prevents uncontrolled discharge. This results in efficient, optimized, and environmentally friendly window cleaning.

[0007] Furthermore, when the device includes a backpack supporting, in particular, the wash water and wastewater tanks, the user can move more easily, which considerably increases their freedom of movement. In particular, such a The device is suitable for rope access work commonly carried out, for example, by professionals specializing in window cleaning. Brief description of the figures

[0008] Other advantages, purposes and particular features of the invention will become apparent from the following non-limiting description of at least one particular embodiment of the device that is the subject of the present invention, with reference to the accompanying drawings, in which:

[0009] [Fig. 1] schematically represents, in cross-section and side view, a first particular embodiment of the device that is the subject of the present invention,

[0010] [Fig.2] schematically represents, in cross-section and in view from below, the first mode of a particular embodiment of the device which is the subject of the present invention represented in [Fig.1],

[0011] [Fig.3] represents, schematically, in cross-section and in view from below, a second a particular embodiment of the device that is the subject of the present invention,

[0012] [Fig.4] represents, schematically, in cross-section and side view, a third mode of a particular embodiment of the device that is the subject of the present invention,

[0013] [Fig. 5] represents, schematically, in cross-section and in view from below, the third a particular embodiment of the device that is the subject of the present invention, represented in [Fig.4],

[0014] [Fig.6] represents, schematically, in cross-section and in view from below, a fourth a particular embodiment of the device that is the subject of the present invention,

[0015] [Fig.7] represents, schematically, in cross-section and in view from below, a fifth a particular embodiment of the device that is the subject of the present invention,

[0016] [Fig.8] represents, schematically, in perspective, an embodiment by particular backpack included in a particular embodiment of the device that is the subject of the present invention, and

[0017] [Fig.9] represents, schematically, in perspective, another view of the mode of rea particular ization of the backpack shown in [Fig.8]. Description of the implementation methods

[0018] The present description is given by way of non-limiting grammar, each feature of an embodiment being able to be advantageously combined with any other feature of any other embodiment.

[0019] The expression "and / or", as used in this document and in the claims, shall be understood as meaning "either or both" of the elements thus joined, that is, elements which are present conjunctively in some cases and disjunctively in others. The multiple elements listed with "and / or" shall be interpreted in the same way, that is, "one or more" of the elements thus joined. Other elements may Other elements, other than those specifically identified by the "and / or" clause, may be present, whether or not they are related to those specifically identified elements. Thus, by way of non-limiting example, a reference to "A and / or B", when used in conjunction with an open language such as "including", may refer, in one embodiment, to A only (possibly including elements other than B); in another embodiment, to B only (possibly including elements other than A); in yet another embodiment, to both A and B (possibly including other elements); and so on.

[0020] As used herein in the description and in the claims, "or" shall be understood as having the same meaning as "and / or" as defined above. For example, when separating elements in a list, "or" or "and / or" shall be interpreted as inclusive, that is, the inclusion of at least one, but also more than one, of a number or list of elements, and, optionally, of additional unlisted elements. Only terms clearly indicating the contrary, such as "only one of" or "exactly one of", or, when used in the claims, "consisting of", refer to the inclusion of only one element of a number or list of elements. In general, the term "or" as used here should only be interpreted as indicating exclusive alternatives (i.e., "either one, but not both") when preceded by terms of exclusivity, such as "either", "one of", "only one of", or "exactly one of".

[0021] As used in this description and in the claims, the expression "at least one," with reference to a list of one or more elements, is to be understood as meaning at least one element chosen from one or more elements in the list of elements, but not necessarily including at least one of each element specifically listed in the list of elements and not excluding any combination of elements in the list of elements. This definition also allows for the optional presence of elements other than the elements specifically identified in the list of elements to which the expression "at least one" refers, whether or not they are related to those specifically identified elements.Thus, by way of non-limiting example, "at least one of A and B" (or, equivalently, "at least one of A or B", or, equivalently, "at least one of A and / or B") may refer, in one embodiment, to at least one, possibly including more than one, A, without B present (and possibly including elements other than B); in another embodiment, to at least one, possibly including more than one, B, without A present (and possibly including elements other than A); in yet another embodiment, to at least one, possibly including more than one, A, and at least one, possibly including more than one, B (and possibly including other elements); etc.

[0022] In the claims, as well as in the description below, all transitive expressions such as "comprising", "including", "carrying", "having", "containing", "implying", "holding", "composed of", and others, shall be understood as open, that is to say, as meaning including, but not limited to. Only the transitive expressions "consisting of" and "consisting essentially of" shall be understood as closed or semi-closed transitive expressions, respectively.

[0023] Throughout the description, "upper" means everything at the top in Figures 1 to 9 which corresponds to the normal configuration of use of the device, and "lower" means everything at the bottom in Figures 1 to 9. The terms "vertical" or "height" are derived from these definitions.

[0024] The following definitions are recalled here: The term "window" refers to a surface that is essentially smooth, for example, made of glass. For example, such a surface is: - substantially vertical or - inclined, preferably presenting an angle of inclination relative to the ground between 45° and 90°.

[0025] The term "wash water" refers to water containing cleaning products suitable for cleaning and known to a person skilled in the art. Preferably, such products are suitable for cleaning windows and have, for example, degreasing properties.

[0026] The term "roller" refers, for example, to a truncated cylindrical element with a circular cross-section, but can also refer to an element with a cross-section of any shape, for example, octagonal. Preferably, such a cross-section is generally circular. A friction roller, in particular, is known to those skilled in the art and comprises a coating suitable for providing mechanical friction on a surface to be cleaned, such as a set of friction fibers.

[0027] The term “mobile” refers to an element having at least two degrees of freedom, for example in rotation.

[0028] The term "means of activation and / or deactivation" refers to an electronic component or software, configured to issue a positive command corresponding to an activation or deactivation action or only a positive command for one of these actions, the other action corresponding to an absence of a command issued.

[0029] It should be noted from the outset that the figures are not to scale.

[0030] It is noted that, in figures 1, 4, 8 and 9, the circulation of wash water is represented by a solid arrow and the circulation of waste water is represented by a dashed arrow.

[0031] Figure 1, which is not to scale, shows a schematic view of one embodiment of the device 100 that is the subject of the present invention. The window cleaning device 100 comprises at least: - a 105 mm gripping handle for one user, - a 110-liter wash water tank, - a 115 wastewater tank and - a 120 cleaning head.

[0032] As can be seen in [Fig. 1], the cleaning head 120 is integral with the gripping handle 105 and comprises: - a 125 drive engine, - a 130 friction roller, - a 140 injector for wash water and - a 150 wastewater suction chute.

[0033] It is noted in [Fig. 1] that the friction roller 130 has a shaft 135 driven by the motor 125. Furthermore, in [Fig. 1], the cleaning head 120 of the device 100 comprises: - a first pipe 145 connecting the wash water injector 140 and the wash water reservoir 110, and - a second pipe 155 connecting the wastewater suction chute 150 and the wastewater tank 115.

[0034] It is noted that in figures 2, 3, 5, 6 and 7 the wash water tank 110 and the waste water tank 115 are not shown.

[0035] In embodiments such as that shown in Figures 1 and 4, the handle 105 includes an ergonomic portion, i.e., one adapted for manual gripping by a user. In particular, such an ergonomic portion has a curved section.

[0036] In embodiments such as those shown in figures 1 to 6, the gripping handle 105 is fixed to the cleaning head 120 in a non-removable manner.

[0037] Preferably, as seen in figures 1 and 4, the part formed by the head, 120 and 320, of cleaning and a portion of the handle, 105 and 305, of gripping has a longitudinal profile in the shape of a swan neck.

[0038] Figure 7, not to scale, shows a schematic view of one embodiment of the device 400 of the present invention. The device 400 comprises a gripping handle 405 in two parts: one part fixed to the cleaning head 120 and another telescopic part. In other words, in these embodiments, the gripping handle 405 comprises a telescopic part 406.

[0039] Preferably, the telescopic portion 406 is achieved by a spring system or by interlocking elements capable of achieving retraction or extension. By For example, such a portion 406 is a telescopic pole.

[0040] In embodiments such as that shown in [Fig. 7], the two portions of the gripping handle 405 are complementary in shape and are therefore configured to be reversibly nested one inside the other by, for example, being clipped and unclipped. Preferably, the gripping handle 405 has a hollow section into which a removable part is inserted. In [Fig. 7], the telescopic portion 406 of the gripping handle 405 is removable.

[0041] In embodiments such as that shown in [Fig. 7], the removable part of the gripping handle 405 is located near a lever 106 for injecting the wash water. It should be noted that a removable pole 406 provides suitable angular orientation adaptable to the device 400 and thus facilitates the cleaning of the window 101.

[0042] It can be seen in figures 1 to 7 that the gripping handle, 105, 305 and 405, is hollow longitudinally in order to at least partially or even totally enclose, in other words to wrap around: - a portion of the electrical connections necessary for the operation of the device, 100, 200, 300, 400 and 500, - part of the first pipe 145 connecting the wash water injector 140 and the wash water tank 110.

[0043] Furthermore, part of the wastewater suction chute 150 is preferably included in the gripping handle 105, 305 and 405.

[0044] Thus, the device has a significant compactness, facilitating its mobility and use.

[0045] In embodiments such as those shown in figures 1 to 7, the gripping handle, 105, 305 and 405, includes a lever 106 for injecting wash water.

[0046] In some embodiments (not shown), the injection handle has the same function as a liquid sprayer commonly used in the packaging of household products, for example. In particular, such a sprayer injects wash water at specific points according to the pressure or release movement exerted by the user on the injection handle.

[0047] In other embodiments, the lever 106 includes a means 107 for activating and / or deactivating the injection of wash water. Such an activation and / or deactivation means 107 is actuated by the injection lever 106. For example, the injection activation and / or deactivation means 107 is a microcontroller. An activation means is configured to activate the injection of wash water based on the signal received by the injection lever 106. Conversely, a deactivation means is configured to deactivate the injection of wash water based on the signal received by the injection lever 106. function of the signal received by the injection control lever 106. A means 107 for activating and deactivating injection is configured to perform these two functions.

[0048] Figure 6, not to scale, shows a schematic view of an embodiment of the device 500 of the present invention. The device 500 comprises a cleaning head 520 having a connector 502. This connector 502 secures the cleaning head 520 to the gripping handle 105. The connector has a movable link 503.

[0049] In embodiments such as that shown in [Fig. 6], the movable joint 503 of the connector 502 is a pivot joint with axis C parallel to the axis A of rotation of the friction roller 130. Such a connector is, for example, known in the field of vacuum cleaners, notably allowing rotation of a vacuum cleaner head.

[0050] In other embodiments (not shown), the movable link 503 of the connector 502 is a pivot link with an axis perpendicular to the axis A of rotation of the friction roller 130.

[0051] In variants (not shown), the movable link 503 of the connector 502 is a ball joint.

[0052] In embodiments such as those shown in Figures 2, 3 and 5 to 7, the cleaning head 120 has a flared shape. Note that the flare is oriented opposite to the junction with the gripping handle, 105, 305 and 405.

[0053] In embodiments such as those shown in figures 1 to 7, the cleaning head, 120, 220, 320 and 520, includes a blade 102 called a "squeegee".

[0054] In these embodiments, the scraper 102 extends at least partially over a portion of the chute 150 located away from the friction roller 130. In particular, the scraper 102 extends over the entire portion of the chute 150 located away from the friction roller 130.

[0055] In embodiments such as those shown in Figures 1 to 7, the squeegee 102 is removable. In particular, the insertion or detachment of the squeegee 102 from the cleaning head, 120, 220, 320 and 520, is achieved by sliding the squeegee along an axis B. Preferably, the cleaning head, 120, 220, 320 and 520, has a housing along the axis B with a shape complementary to a longitudinal portion of the squeegee 102.

[0056] Preferably, the squeegee 102 is made of a flexible material, in particular one that is elastically deformable. For example, such a flexible material is rubber or any polymer or flexible material known to a person skilled in the art.

[0057] In embodiments such as those shown in Figures 1 to 7, the cleaning head, 120, 220, 320 and 520, comprises at least one friction plate, 103 and / or 104. It should be noted that such a friction plate, 103 and / or 104, is configured to make contact with the glass 101. In particular, at least a portion of the friction plate, 103 and / or 104, is aligned with a tangent to a directrix of the truncated cylinder formed by the friction roller, 130 and 330. Such a tangent has at least one point of contact with the glass 101 to be cleaned.

[0058] Preferably, a friction plate, 103 and / or 104, extends at least partially along a generatrix of the truncated cylinder formed by the friction roller, 130 and 330. Even more preferably, a plate, 103 and / or 104, extends over the entirety of a generatrix of the truncated cylinder formed by the friction roller, 130 and 330.

[0059] In some embodiments, the contact surface of the friction plate, 103 and / or 104, with the glass 101 has a surface comprising fibers, preferably natural fibers. Such fiber friction plates are known to those skilled in the art.

[0060] Figure 3, which is not to scale, shows a schematic view of one embodiment of the device 200 that is the subject of the present invention. The device 200 comprises a cleaning head 220 comprising: - a pressure sensor 201 configured to detect the pressure exerted on the friction roller 130 when the roller 130 contacts the glass 101, - a detector 202 for exceeding a predetermined pressure based on the detected pressure and - a means 203 of activating and / or deactivating the drive motor 125 depending on the detected crossing.

[0061] In embodiments such as that shown in [Fig.3], the sensor 201 interacts with the activation and / or deactivation means 203 via the detector 202.

[0062] In some embodiments, the means 203 for activating or deactivating the drive motor 125 is a microcontroller. An activation means 203 is configured to activate the motor 125 based on the signal received by the detector 202. Conversely, a deactivation means 203 is configured to deactivate the motor 125 based on the signal received by the detector 202. A motor activation and deactivation means 108 is configured to perform these two functions.

[0063] It is noted that, for example, a predetermined pressure corresponds to a minimum compression pressure of the friction roller 130 on the glass 101.

[0064] It can be seen in figures 1 and 4 that the cleaning head, 120 and 320, includes a drive motor 125. Such a motor 125 drives a rotation of the shaft 135 of the roller, 130 and 330, along the axis A.

[0065] It can be seen in Figures 2, 3 and 5 to 7 that the roller, 130 and 330, comprises a gear 136 fixed to the shaft 135 and configured to be driven in rotation by a gear (not shown) of the drive motor 125. Note that the gear 136 of the roller, 130 and 330, therefore ensures the rotation of the shaft 135.

[0066] In embodiments such as those shown in Figures 1 and 4, the drive motor 125 is configured to rotate the friction roller 130 so as to direct the wastewater towards the suction chute 150.

[0067] It is noted that, in these embodiments, the rotation of the roller 130 is conditioned by the rotation of the drive motor gear 125. Thus, such a gear is adjusted so as to favor this preferential rotation.

[0068] In some embodiments, the motor 125 is electrically powered. Such an electrical power supply is achieved, for example, by a battery (not shown) connected to the motor 125. It should be noted that the battery is connected to the motor 125 by an electrical cable 126 shown in Figures 1 and 4.

[0069] Figures 4 and 5, which are not to scale, show two schematic views of an embodiment of the device 300 of the present invention. The device 300 comprises a friction roller 330 having orifices 301 for the passage of wash water.

[0070] Preferably, as seen in [Fig.5], the washing water passage orifices 301 are located along the friction roller 330.

[0071] In embodiments such as that shown in Figures 4 and 5, an outlet of a wash water injector 340 is disposed in an internal volume of the friction roller 330 delimited by the wash water passage orifices 301. In these embodiments, and when the roller has a friction thickness as mentioned below, the wash water injected by the injector 340 passes through the orifices 301 and preferentially saturates the friction thickness first, then saturates the friction plates 103 and 104.

[0072] In embodiments, the friction roller, 130 and 330, comprises a friction thickness that at least partially encloses the external surface of the roller and is configured to be in contact with the glass 101.

[0073] Preferably, the friction thickness is flexible and in particular deformable under the action of a mechanical stress, for example, when pressure is exerted by a user.

[0074] In some embodiments, the friction layer is a layer comprising fibers, for example, natural fibers. Preferably, the fibers of the friction layer have reduced hardness and abrasiveness to avoid scratching the glass 101. Such fibers are known to those skilled in the art.

[0075] Thus, the fibrous friction thickness limits the wear of the glass 101 caused by the friction of the roller, 130 and 330, while ensuring the cleaning of the glass 101.

[0076] It is noted that, when the flexible friction layer is soaked with wash water, The pressure exerted by the user has the effect of crushing the friction thickness against the glass 101. In this case, the point of contact between the friction thickness and the glass 101 is generally aligned with the other points of contact between the friction plates, 103 and 104, and the glass 101. Thus, in these embodiments, an overall contact and friction surface is formed during the use of the device.

[0077] In embodiments, the wash water injector, 140 and / or 340, is an injection nozzle.

[0078] In embodiments such as that shown in [Fig.1], the injector 140 diffuses wash water onto the external surface of the friction roller 130.

[0079] In variants, such as that shown in [Fig.4], the injector 340 diffuses wash water inside the friction roller 130, as previously mentioned.

[0080] In embodiments such as those shown in Figures 1 to 7, the wash water injector is controlled by a control means corresponding to the injection lever 106, as previously mentioned.

[0081] It is noted that the first washing water circulation pipe 145 can be in several interlocking or clip-on parts, but also in a single continuous part.

[0082] In embodiments such as those shown in Figures 1 and 4, the suction chute 150 is connected to the wastewater tank 115 by the second pipe 155. The wastewater tank 115 is, for example, connected to a suction means. Such a suction means is configured to create a vacuum in the wastewater tank 115 and perform the suction.

[0083] In some embodiments, the chute includes at least one solids filter along the passage of wastewater.

[0084] It is noted that the second wastewater circulation pipe 155 can be in several interlocking or clip-on parts, but also in a single continuous part.

[0085] In some embodiments, at least one of the wash water tank 110 and the wastewater tank 115 is attached to the gripping handle 105. Such embodiments are suitable, for example, for small devices, in particular those not exceeding a certain mass, and for cleaning operations that do not require a large quantity of water.

[0086] In these embodiments, the tanks, 110 and / or 115, are, for example, rechargeable or removable and therefore replaceable.

[0087] Figure 8 shows the device 600 comprising a backpack 602 which includes the wash water tank 110 and the wastewater tank 115. Such a backpack 602 is also called a "back element".

[0088] In variants (not shown), the backpack only includes one tank from among the wash water tank 110 and the waste water tank 115.

[0089] In embodiments, a connection between the second wastewater pipe 155 and the wastewater tank 115 includes a filter suitable for filtering solids present in the wastewater before the wastewater is introduced into the tank 115. Thus, fouling by solids of the wastewater tank 115 is limited.

[0090] In some embodiments, the reservoirs, 110 and / or 115, placed side by side in the backpack 602, form a unit covering the entire back of the user. Thus, their shape contributes to a uniform distribution of the loads borne by the user's back.

[0091] Figures 8 and 9, which are not to scale, show a schematic view of one embodiment of the device 600 that is the subject of the present invention. It should be noted that the gripping handle and the cleaning head are not shown in Figures 8 and 9. The device 600 further comprises a backpack 602. The backpack 602 comprises: - a 610-liter wash water tank, - a 615 wastewater tank, - a means of circulating 612 wash water and - a means of suctioning 609 wastewater.

[0092] In embodiments such as that shown in [Fig. 8], the backpack 602 includes two support straps 603. It should be noted that, when using the device 600, the straps 603 rest on the user's shoulders.

[0093] In variants, the support straps correspond to two hooks of adequate width for the passage of the user's shoulders.

[0094] In embodiments such as that shown in [Fig. 8], the backpack 602 has two straps 604, positioned midway along its length on either side of the backpack 602. It should be noted that such straps 604 each have two parts that clip into each other and are therefore connectable, similarly to a seatbelt, for example. Preferably, the connected straps 604 encircle the user's chest and are also referred to as a "chest strap."

[0095] In embodiments such as that shown in [Fig. 8], the backpack 602 also includes two straps 605, located at the bottom of its length and on either side of the backpack 602. It should be noted that such straps 605 each have two parts that clip into each other and are therefore connectable, similarly to a seatbelt, for example. Preferably, the connected straps 605 encircle the lower part of the user's torso and are also referred to as "belt fastenings".

[0096] In embodiments such as that shown in [Fig. 8], the backpack 602 includes a mattress 607 covering the part closest to the user's back. Thus, the user's back rests on the mattress 607, which increases the comfort of the backpack 602 when worn.

[0097] In embodiments such as that shown in figures 8 and 9, the backpack 602 has in its upper part two insertion compartments, respectively for the wash water tank 610 and for the waste water tank 615.

[0098] Figures 8 and 9 show that the backpack has, in its lower part, a volume delimiting a compartment 606. In particular, compartment 606 comprises: - a means of circulating 612 wash water and - a means of suctioning 609 wastewater.

[0099] In some embodiments, the wash water circulation means 612 includes a wash water propulsion motor 616. Preferably, the wash water propulsion motor 616 is electrically powered by an electrical cable 618.

[0100] In embodiments, the washing water circulation means 612 additionally includes a battery 611 for powering the propulsion motor 616, increasing the autonomy of the device 600.

[0101] It is noted in [Fig. 9] that the wash water circulation means 612, and in particular the propulsion motor 616, is connected to the first conduit 145 via the wash water tank 610. Such a circulation means 612 is configured to circulate the wash water to the wash water injector. For example, such circulation of the wash water is achieved by pressurizing the interior of the wash water tank 610, resulting in the propulsion of water.

[0102] In some embodiments, the wastewater suction means 608 includes a wastewater suction motor 609. Preferably, the wastewater suction motor 609 is electrically powered by an electrical cable 619.

[0103] In embodiments, the wastewater suction means 608 additionally includes a battery 617 of the suction motor 609 increasing the autonomy of the device 600.

[0104] It is noted in [Fig. 9] that the wastewater suction means 608, and in particular the wastewater suction motor 609, is connected to the second pipe 155 via the wastewater tank 615. Such a suction means 608 is configured to exert a vacuum, particularly inside the wastewater tank 615, and thus cause the wastewater to be drawn from the suction chute into the wastewater tank 615.

[0105] In embodiments such as that shown in [Fig. 9], the compartment 606, has two switches: - a switch 614 configured to start or stop the electrical supply current to the washing water circulation means 612 and - a switch 613 configured to start or stop the electrical supply current to the wastewater suction means 608.

[0106] In some embodiments, the electrical energy powering the backpack is also used to power the drive motor 125 of the friction roller.

[0107] In some embodiments, the backpack further comprises photovoltaic cells arranged on the surface of the backpack furthest from the user. Thus, all or part of the electrical energy required for the operation of the device 600 comes from the photovoltaic cells.

[0108] In embodiments (not shown), when the user performs rope work with the device 600, a preferably semi-rigid spring is clipped onto the user's seat and backpack, and configured to relieve the weight of the backpack which exerts pressure on the user's back.

[0109] It is noted that all embodiments and variants described for a particular device, 100, 200, 300, 400, 500 or 600, in Figures 1 to 9 are also valid for another device, 100, 200, 300, 400, 500 or 600, unless otherwise stated.

[0110] Benefits provided

[0111] The present invention relates to a window cleaning device, which comprises, at least: - a user-friendly grip handle, - a wash water tank, - a wastewater tank and - a cleaning head, attached to the grip handle, comprising: - a drive motor, - a friction roller comprising a shaft driven by the motor, - a wash water injector connected to the wash water tank by a first pipe and - a wastewater suction chute connected to the wastewater tank by a second pipe.

[0112] Thanks to these features, the device enables window cleaning that combines mechanical scrubbing with a roller in the presence of wash water and the suction of wastewater. In particular, the device reduces the effort required by the user, for example, in the arm and wrist, to clean a window. Furthermore, the device limits the user's occasional or regular exposure to wash water and wastewater. Such exposure This corresponds, for example, to skin and / or eye splashes. The risks of skin allergy, irritation or lesions are therefore reduced.

[0113] Furthermore, by implementing a suction system, the device limits the discharge and flow of wastewater. A further step of cleaning the discharged and discharged wastewater, for example onto the ground, is therefore avoided.

[0114] Thus, easy, quick and efficient cleaning is achieved when using such a device.

[0115] In optional embodiments, the cleaning head further comprises a blade called a "squeegee", extending at least partially over a portion of the chute away from the friction roller.

[0116] Thanks to these features, the squeegee allows for a proper finishing touch to the window cleaning. Thus, in a single pass and without excessive effort, the user cleans a portion of the window. The efficiency of the device is therefore improved.

[0117] In optional embodiments, the cleaning head further comprises at least one friction plate configured to come into contact with the glass.

[0118] Thanks to these arrangements, friction on the glass, and therefore additional mechanical cleaning, is achieved by the friction plate. The friction of the roller is thus complemented by the friction plate. This results in more effective cleaning of the glass.

[0119] In optional embodiments, the device further comprises: - a pressure sensor configured to detect the pressure exerted on the friction roller when the roller contacts the glass, - a detector for exceeding a predetermined pressure based on the detected pressure and - a means of activating and / or deactivating the drive motor depending on the detected crossing.

[0120] Thanks to these features, the device activates the roller's rotation only when it comes into contact with the glass. In particular, this limits the risk of uncontrolled splashing of water containing cleaning products due to the roller's rotation. Furthermore, deactivating the rotation prevents continuous roller operation and thus reduces the device's energy consumption, for example, in the form of electricity. This makes the device easier to use and less energy-intensive.

[0121] In optional embodiments, the drive motor is configured to rotate the friction roller so as to direct the wastewater towards the suction chute.

[0122] Thanks to these arrangements, the device allows a rotation with an orientation Specifically, the suction chute directs wastewater into the inlet, resulting in more efficient wastewater extraction. This effectively limits uncontrolled wastewater discharges.

[0123] In optional embodiments, the friction roller has wash water passage orifices.

[0124] Thanks to these arrangements, the circulation of the wash water is facilitated. Thus, the distribution of the injected wash water is achieved in a more homogeneous and optimal manner.

[0125] In optional embodiments, an outlet of the wash water injector is disposed in an internal volume of the friction roller delimited by the wash water passage orifices.

[0126] Thanks to these arrangements, all the wash water comes into contact with the friction roller, notably by circulating through the passage holes. The combination of the roller and contact with all the wash water thus allows for more effective roller friction and therefore optimal soiling.

[0127] In optional embodiments, the gripping handle further includes a wash water injection lever, the device including a means for activating and / or deactivating wash water injection operated by the injection lever.

[0128] Thanks to these features, the device allows the user to control the injected wash water in real time and dynamically. Water consumption is therefore limited directly by the user. This results in significant water savings.

[0129] In optional embodiments, the gripping handle also includes a telescopic portion.

[0130] Thanks to these arrangements, the telescopic pole allows the user to reach heights and angles on the window to be cleaned that are initially difficult to access.

[0131] In optional embodiments, the cleaning head further comprises a connector with the gripping handle having a movable link.

[0132] Thanks to these arrangements, the mobility of the cleaning head is greater. Such mobility is ensured, for example, by a pivot joint or a ball joint. Thus, the orientation of the cleaning head is easily achieved, for example, according to the user's needs.

[0133] In optional embodiments, the device further comprises a backpack including: - the wash water tank, - the wastewater tank, - a means of circulating wash water connected to the first pipe and configured to circulate the wash water and - a wastewater suction device connected to the second pipe and configured to exert a vacuum.

[0134] Thanks to these arrangements, the largest and heaviest components of the device are supported by the user's back. In particular, when large volumes of water are used during cleaning, the backpack helps distribute and support the weight of the various components. Furthermore, the backpack allows for easier movement by the user while supporting the different loads. The device's mobility is thus increased, allowing for greater freedom of movement for the user. For example, such a device is compatible with rope access work performed by professionals.

Claims

Demands

1. A window cleaning device (100, 200, 300, 400, 500, 600), characterized in that it comprises at least: - a user grip (105, 305, 405), - a wash water reservoir (110, 610), - a wastewater reservoir (115, 615), and - a cleaning head (120, 220, 320, 520), integral with the grip, comprising: - a drive motor (125), - a friction roller (130, 330) having a shaft (135) driven by the motor, the friction roller (330) having wash water passages (301), - a wastewater injector (140, 340). washing connected to the wash water tank by a first pipe (145) and - a wastewater suction chute (150) connected to the wastewater tank by a second pipe (155).

2. Device (100, 200, 300, 400, 500) according to claim 1, wherein the cleaning head (120, 220, 320, 520) further comprises a blade (102) called a "squeegee", extending at least partially over a portion of the chute (150) away from the friction roller (130, 330).

3. Device (100, 200, 300, 400, 500) according to any one of claims 1 or 2, wherein the cleaning head (120, 220, 320, 520) further comprises at least one friction plate (103, 104) configured to come into contact with the glass (101).

4. Device (200) according to any one of claims 1 to 3, further comprising: - a pressure sensor (201) configured to capture pressure exerted on the friction roller (130) when the roller contacts the glass (101), - a detector (202) of crossing a predetermined pressure based on the pressure captured and - a means (203) of activating and / or deactivating the drive motor (125) based on the detected crossing.

5. Device (100, 200, 300, 400, 500) according to any one of claims 1 to 4, wherein the drive motor (125) is configured to perform a rotation of the friction roller (130, 330) so as to orient wastewater towards the suction chute (150).

6. Device (300) according to any one of claims 1 to 5, wherein an outlet of the injector (340) of wash water is disposed in an internal volume of the friction roller (330) delimited by the wash water passage orifices (301).

7. Device (100, 200, 300, 400, 500) according to any one of claims 1 to 6, wherein the gripping handle (105, 305, 405) further comprises a wash water injection lever (106), the device comprising a means (107) for activating and / or deactivating wash water injection actuated by the injection lever.

8. Device (400) according to any one of claims 1 to 7, wherein the gripping handle (405) further comprises a telescopic portion (406).

9. Device (500) according to any one of claims 1 to 8, wherein the cleaning head (520) further comprises a connector (502) with the gripping handle (105) comprising a movable link (503).

10. Device (600) according to any one of claims 1 to 9 further comprising a backpack (602) comprising: - the wash water tank (610), - the waste water tank (615), - a wash water circulation means (612) connected to the first pipe (145) and configured to circulate the wash water and - a waste water suction means (608) connected to the second pipe (155) and configured to exert a vacuum.

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