FR3140565A1 - WINDOW CLEANING DEVICE - Google Patents

Abstract

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

Description

WINDOW CLEANING DEVICE Technical field of the invention

The present invention relates to a window cleaning device. It applies, in particular, to the field of window maintenance.

State of the art

For window maintenance, prior art solutions consist of using, separately, two elements corresponding to a flat friction surface and a squeegee. The friction surface is, for example, a plate soaked in washing water which is rubbed against the window. The squeegee then removes the washing water present on the window. However, such a solution is time-consuming and is based only on the pressure exerted by the user on the two elements which can be variable.

Other prior art solutions consist in combining, in the same device, a flat friction surface and a squeegee, these two elements being juxtaposed. However, such solutions are also based solely on the pressure exerted by the user which can be variable. In certain cases, in particular when the surface and the squeegee are present on two opposite sides, the cleaning of the window is carried out in two stages requiring a constant back and forth movement of the device.

These prior art solutions are therefore time-consuming, restrictive for the user and do not produce a satisfactory result when the window is very dirty. Thus, such solutions do not allow windows to be cleaned effectively.

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

The present invention makes it possible to combine the injection of washing water, cleaning by rotating a roller and suction of waste water. Cleaning of a portion of glass with a high degree of dirt is therefore carried out. When the device includes a squeegee, such cleaning is carried out in a single operation and without the need for a second pass over the same portion of glass. In addition, suction of waste water during cleaning prevents its uncontrolled discharge. Cleaning of the glass is thus efficient, optimized and environmentally friendly.

Furthermore, when the device includes a backpack supporting in particular the tanks for washing water and waste water, the user can move more easily, which considerably increases his freedom of movement. In particular, such a device is suitable for work on ropes commonly carried out, for example, by professionals specializing in window maintenance.

Brief description of the figures

Other advantages, aims and particular characteristics of the invention will emerge from the following non-limiting description of at least one particular embodiment of the device which is the subject of the present invention, with reference to the appended drawings, in which:

represents, schematically, in section and in side view, a first particular embodiment of the device which is the subject of the present invention,

represents, schematically, in section and in a view from below, the first particular embodiment of the device which is the subject of the present invention represented in ,

represents, schematically, in section and in a view from below, a second particular embodiment of the device which is the subject of the present invention,

represents, schematically, in section and in side view, a third particular embodiment of the device which is the subject of the present invention,

represents, schematically, in section and in bottom view, the third particular embodiment of the device which is the subject of the present invention represented in ,

represents, schematically, in section and in bottom view, a fourth particular embodiment of the device which is the subject of the present invention,

represents, schematically, in section and in bottom view, a fifth particular embodiment of the device which is the subject of the present invention,

represents, schematically, in perspective, a particular embodiment of the backpack included in a particular embodiment of the device which is the subject of the present invention, and

represents, schematically, in perspective, another view of the particular embodiment of the backpack shown in .

This description is given without limitation, each characteristic of an embodiment being able to be combined with any other characteristic of any other embodiment in an advantageous manner.

The term "and/or" as used herein and in the claims is to be understood to mean "either or both" of the elements so conjoined, i.e., elements that are present conjunctively in some instances and disjunctively in other instances. Multiple elements listed with "and/or" are to be interpreted in the same manner, i.e., "one or more" of the elements so conjoined. Other elements may optionally be present, other than the elements specifically identified by the "and/or" clause, whether or not 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 open language such as "comprising" may refer, in one embodiment, to A only (optionally including elements other than B); in another embodiment, to B only (optionally including elements other than A); in yet another embodiment, to A and B (possibly including other elements); etc.

As used herein in the description and claims, "or" is to 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" is to be interpreted as inclusive, i.e., the inclusion of at least one, but also more than one, of a number or list of elements, and, optionally, of additional elements not listed. Only terms clearly indicating otherwise, 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 herein should be construed as indicating exclusive alternatives (i.e., "either or the other, but not both") only when preceded by terms of exclusivity, such as "either," "one of," "only one of," or "exactly one of."

As used in this specification and in the claims, the expression "at least one", in reference to a list of one or more elements, is to be understood to mean at least one element selected 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 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, optionally including more than one, A, without B present (and optionally including elements other than B); in another embodiment, to at least one, optionally including more than one, B, without A present (and optionally including elements other than A); in yet another embodiment, to at least one, optionally including more than one, A, and at least one, optionally including more than one, B (and optionally including other elements); etc.

In the claims, as well as in the description below, all transitional expressions such as "comprising", "including", "carrying", "having", "containing", "involving", "holding", "consisting of", and the like, are to be understood as open, i.e., as meaning including, but not limited to. Only the transitional expressions "consisting of" and "consisting essentially of" are to be understood as closed or semi-closed transitional expressions, respectively.

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

We recall here the following definitions:
The term "window" means a substantially smooth surface, for example made of glass. For example, such a surface is:
- substantially vertical or
- inclined, preferably having an angle of inclination relative to the ground of between 45° and 90°.

The term “washing water” refers to water containing cleaning products suitable for cleaning and known to the person skilled in the art. Preferably, such products are suitable for cleaning windows and have, for example, degreasing properties.

The term "roller" designates, for example, an element in the form of a truncated cylinder having a circular section, but can also correspond to an element having a section of any shape, for example, octagonal. Preferably, such a section is generally circular. A friction roller is in particular known to the person skilled in the art and comprises a coating capable of carrying out mechanical friction on a surface to be cleaned, such as a set of friction fibers.

The term "mobile" refers to an element having at least two degrees of freedom, for example in rotation.

The term “activation and/or deactivation means” means 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 command issued.

Please note that the figures are not to scale.

Note 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 dotted arrow.

We observe, on the , which is not to scale, a schematic view of an embodiment of the device 100 which is the subject of the present invention. The device 100 for cleaning a window 101 comprises at least:
- a 105 grip handle for a user,
- a 110 tank of wash water,
- a 115 wastewater tank and
- a 120 cleaning head.

We observe, in , that the cleaning head 120 is integral with the grip handle 105 and comprises:
- a 125 drive motor,
- a 130 friction roller,
- a 140 wash water injector and
- a 150 wastewater suction chute.

We note, in , that the friction roller 130 comprises a shaft 135 driven by the motor 125. Furthermore, in , the cleaning head 120 of the device 100 comprises:
- a first pipe 145 connecting the wash water injector 140 and the wash water tank 110, and
- a second pipe 155 connecting the waste water suction chute 150 and the waste water tank 115.

It is noted that in figures 2, 3, 5, 6 and 7 the tank 110 for washing water and the tank 115 for waste water are not shown.

In embodiments, such as that shown in FIGS. 1 and 4, the handle 105 comprises an ergonomic portion, i.e. adapted to a manual grip carried out by a user. In particular, such an ergonomic portion has a curved part.

In embodiments, such as those shown in FIGS. 1 to 6, the gripping handle 105 is secured to the cleaning head 120, in a non-removable manner.

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

We observe, on the , which is not to scale, a schematic view of an embodiment of the device 400 which is the subject of the present invention. The device 400 comprises a gripping handle 405 in two portions: a portion secured to the cleaning head 120 and another telescopic portion. In other words, in these embodiments, the gripping handle 405 comprises a telescopic portion 406.

Preferably, the telescopic portion 406 is produced by a spring system or by interlocking elements capable of carrying out a retraction or an extension. For example, such a portion 406 is a telescopic pole.

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

In embodiments, such as that shown in , the removable part of the grip handle 405 is arranged near a lever 106 for injecting the washing water. It is noted that a removable pole 406 ensures an adequate and adaptable angular orientation to the device 400 and therefore facilitates the cleaning of the window 101.

We observe, in figures 1 to 7, that the grip handle, 105, 305 and 405, is hollow longitudinally in order to at least partially or even completely enclose, in other words to envelop:
- part of the electrical connections necessary for the operation of the device, 100, 200, 300, 400 and 500,
- a part of the first pipe 145 connecting the wash water injector 140 and the wash water tank 110.

Furthermore, a portion of the wastewater suction chute 150 is preferably included in the gripping handle, 105, 305 and 405.

Thus, the device presents a significant compactness, facilitating its mobility and use.

In embodiments, such as those shown in Figures 1 to 7, the gripping handle, 105, 305 and 405, comprises a lever 106 for injecting washing water.

In embodiments (not shown), the injection lever has the same function as a liquid sprayer commonly used in the packaging of household products, for example. In particular, such a sprayer punctually injects the washing water according to the pressure or release movement exerted by the user on the injection lever.

In other embodiments, the handle 106 comprises a means 107 for activating and/or deactivating the injection of washing water. Such an activation and/or deactivation means 107 is actuated by the injection handle 106. For example, the injection activation and/or deactivation means 107 is a microcontroller. An activation means is configured to activate the injection of washing water according to the signal received by the injection handle 106. On the contrary, a deactivation means is configured to deactivate the injection of washing water according to the signal received by the injection handle 106. An injection activation and deactivation means 107 is configured to perform these two functions.

We observe, on the , which is not to scale, a schematic view of an embodiment of the device 500 which is the subject of the present invention. The device 500 comprises a cleaning head 520 comprising a connector 502. Such a connector 502 secures the cleaning head 520 with the gripping handle 105. It is noted that the connector comprises a movable connection 503.

In embodiments, such as that shown in , the movable connection 503 of the connector 502 is a pivot connection 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, in particular allowing rotation of a suction head of a vacuum cleaner.

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

In variants (not shown), the movable connection 503 of the connector 502 is a ball joint.

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

In embodiments, such as those shown in Figures 1-7, the cleaning head, 120, 220, 320 and 520, includes a blade 102 called a “squeegee”.

In these embodiments, the squeegee 102 extends at least partially over a portion of the chute 150 remote from the friction roller 130. In particular, the squeegee 102 extends over the entire portion of the chute 150 remote from the friction roller 130.

In embodiments, such as those shown in FIGS. 1 to 7, the squeegee 102 is removable. In particular, the insertion or detachment of the squeegee 102 on the cleaning head, 120, 220, 320 and 520, are carried out by sliding the squeegee along an axis B. Preferably, the cleaning head, 120, 220, 320 and 520, comprises a housing along the axis B of a shape complementary to a longitudinal portion of the squeegee 102.

Preferably, the squeegee 102 is made of a flexible material and in particular elastically deformable. For example, such a flexible material is rubber or any polymer or flexible material known to those skilled in the art.

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

Preferably, a friction plate, 103 and/or 104, extends at least partially along a generatrix of the cylinder truncated 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 cylinder truncated by the friction roller, 130 and 330.

In embodiments, the surface for contacting the friction plate 103 and/or 104 with the window 101 has a surface comprising fibers, preferably natural fibers. Such fiber friction plates are known to those skilled in the art.

We observe, on the , which is not to scale, a schematic view of an embodiment of the device 200 which is the subject of the present invention. The device 200 comprises a cleaning head 220 comprising:
- a pressure sensor 201 configured to capture a pressure exerted on the friction roller 130 during contact of the roller 130 with the window 101,
- a detector 202 for exceeding a predetermined pressure as a function of the pressure captured and
- a means 203 for activating and/or deactivating the drive motor 125 depending on the detected crossing.

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

In 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 depending on the signal received by the detector 202. On the contrary, a deactivation means 203 is configured to deactivate the motor 125 depending on the signal received by the detector 202. A means 108 for activating and deactivating the motor is configured to perform these two functions.

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

It can be seen in Figures 1 and 4 that the cleaning head 120 and 320 comprises 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.

It is observed, in figures 2, 3 and 5 to 7, that the roller, 130 and 330, comprises a gear 136 secured to the shaft 135 and configured to be driven in rotation by a gear (not shown) of the drive motor 125. It is noted that the gear 136 of the roller, 130 and 330, therefore ensures the rotation of the shaft 135.

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

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

In embodiments, the motor 125 is electrically powered. Such electrical power is provided, for example, by a battery (not shown) connected to the motor 125. Note that the battery is connected to the motor 125 by an electrical cable 126 shown in FIGS. 1 and 4.

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

Preferably, as visible in , the orifices 301 for the passage of the washing water are present along the friction roller 330.

In embodiments, such as that shown in FIGS. 4 and 5, an outlet of a wash water injector 340 is arranged in an internal volume of the friction roller 330 delimited by the orifices 301 for the passage of wash water. In these embodiments, and when the roller has a friction thickness mentioned below, the wash water injected by the injector 340 passes through the orifices 301 and preferentially initially soaks the friction thickness and then soaks the friction plates, 103 and 104.

In embodiments, the friction roller, 130 and 330, comprises a friction thickness at least partially enclosing the external surface of the roller and configured to be placed in contact with the window 101.

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

In embodiments, the friction thickness is a layer that comprises fibers, for example natural fibers. Preferably, the fibers of the friction thickness have a reduced hardness and abrasiveness in order to avoid scratching the window 101. Such fibers are known to the person skilled in the art.

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.

It is noted that, when the flexible friction thickness is soaked with washing water, the pressure exerted by the user has the effect of crushing the friction thickness against the window 101. In this case, the point of contact between the friction thickness and the window 101 is generally aligned with the other points of contact between the friction plates, 103 and 104, and the window 101. Thus, in these embodiments, an overall contact and friction surface is formed when using the device.

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

In embodiments, such as that shown in , the injector 140 diffuses washing water onto the external surface of the friction roller 130.

In variations, such as that shown in , the injector 340 diffuses washing waters inside the friction roller 130, as mentioned previously.

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.

It is noted that the first pipe 145 for circulating the washing water can be in several nestable or clippable parts, but also in a single continuous part.

In embodiments, such as those shown in FIGS. 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 put the wastewater tank 115 under vacuum and perform the suction.

In embodiments, the chute includes at least one solid filter along the wastewater passage.

It is noted that the second wastewater circulation pipe 155 can be in several nestable or clippable parts, but also in a single continuous part.

In embodiments, at least one of the wash water tank 110 and the waste water tank 115 is attached to the grip handle 105. Such embodiments are suitable, for example, for devices of reduced size, in particular not exceeding a certain mass and for cleaning not requiring a significant quantity of water.

In these embodiments, the reservoirs, 110 and/or 115, are, for example, rechargeable or removable and therefore replaceable.

We observe, on the , the device 600 comprising a backpack 602 which comprises the tank 110 of washing water and the tank 115 of waste water. Such a backpack 602 is also called a “back element”.

In variants (not shown), the backpack comprises only one tank among the wash water tank 110 and the waste water tank 115.

In embodiments, a connection between the second wastewater line 155 and the wastewater tank 115 includes a filter capable of filtering solids present in the wastewater before introducing the wastewater into the tank 115. Thus, clogging of the wastewater tank 115 by solids is limited.

In embodiments, the reservoirs, 110 and/or 115, juxtaposed in the backpack 602 form an assembly covering the entire back of the user. Thus, their shape contributes to a uniform distribution of the loads supported by the user's back.

Figures 8 and 9, which are not to scale, show a schematic view of an embodiment of the device 600 which is the subject of the present invention. Figures 8 and 9 show that the gripping handle and the cleaning head are not shown. The device 600 further comprises a backpack 602. The backpack 602 comprises:
- a 610 tank of wash water,
- a 615 wastewater tank,
- a means of circulation 612 of washing water and
- a means of suction 609 of waste water.

In embodiments, such as that shown in , the backpack 602 comprises two support straps 603. It is noted that, when using the device 600, the straps 603 rest on the shoulders of the user.

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

In embodiments, such as that shown in , the backpack 602 comprises two straps 604, arranged in the middle of the length and on either side of the backpack 602. It is noted that such straps 604 respectively comprise two parts that can be clipped into each other and are therefore connectable, in a manner similar to a seat belt, for example. Preferably, the connected straps 604 encircle the user's chest, and are also called "chest strap attachment".

In embodiments, such as that shown in , the backpack 602 also comprises two straps 605, arranged in the lower part of the length and on either side of the backpack 602. It is noted that such straps 605 respectively comprise two parts that can be clipped into each other and are therefore connectable, in a manner similar to a seat belt, for example. Preferably, the connected straps 605 encircle the lower part of the user's torso, and are also called "belt attachment".

In embodiments, such as that shown in , the backpack 602 comprises 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.

In embodiments, such as that shown in FIGS. 8 and 9, the backpack 602 comprises in the upper part two insertion housings, respectively for the tank 610 of washing water and for the tank 615 of waste water.

It can be seen in Figures 8 and 9 that the backpack comprises, in the lower part, a volume delimiting a compartment 606. In particular, the compartment 606 comprises:
- a means of circulation 612 of washing water and
- a means of suction 609 of waste water.

In embodiments, the washing water circulation means 612 comprises a washing water propulsion motor 616. Preferably, the washing water propulsion motor 616 is electrically powered by an electric cable 618.

In embodiments, the means 612 for circulating wash water comprises, in a complementary manner, a battery 611 for supplying power to the propulsion motor 616, increasing the autonomy of the device 600.

We note, in , that the circulation means 612 of washing water, and in particular the propulsion motor 616, is connected to the first pipe 145 via the washing water tank 610. Such a circulation means 612 is configured to circulate the washing water to the washing water injector. For example, such circulation of the washing water is carried out by pressurizing the interior of the washing water tank 610 causing water propulsion.

In embodiments, the wastewater suction means 608 comprises a wastewater suction motor 609. Preferably, the wastewater suction motor 609 is electrically powered by an electric cable 619.

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

We note, in , that the waste water suction means 608, and in particular the waste water suction motor 609, is connected to the second pipe 155 via the waste water tank 615. Such a suction means 608 is configured to exert a vacuum, in particular inside the waste water tank 615, and therefore cause the suction of waste water from the suction chute towards the waste water tank 615.

In embodiments, such as that shown in , compartment 606, has two switches:
- a switch 614 configured to trigger or stop the electric current supplying the means 612 for circulating wash water and
- a switch 613 configured to trigger or stop the electric current supplying the waste water suction means 608.

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

In 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.

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

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

Benefits provided

The present invention relates to a device for cleaning a window, which comprises, at least:
- a grip handle for a user,
- a wash water tank,
- a waste water 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 waste water suction chute connected to the waste water tank by a second pipe.

Thanks to these provisions, the device makes it possible to implement window cleaning that combines mechanical friction with a roller in the presence of washing water and suction of waste water. In particular, the device makes it possible to limit the effort made by the user, for example at the level of the arm and wrist, to clean a window. In addition, the device makes it possible to limit the occasional or regular exposure of the user to washing water and waste water. Such exposure corresponds, for example, to skin and/or ophthalmic projections. The risks of skin allergy, irritation or lesions are therefore reduced.

Furthermore, by implementing suction, the device makes it possible to limit discharges and the flow of wastewater. An additional step of cleaning the wastewater that has flowed and been discharged, for example onto the ground, is therefore avoided.

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

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

Thanks to these provisions, the squeegee allows for an adequate finish to be achieved when cleaning the window. Thus, in a single pass and without excessive effort, the user cleans a portion of the window. The efficiency of the device is thus improved.

In optional embodiments, the cleaning head further comprises at least one friction plate configured to contact the glass.

Thanks to these arrangements, friction on the glass and thus additional mechanical decontamination is achieved by the friction plate. The friction of the roller is therefore supplemented by the friction plate. Thus, more effective decontamination of the glass is achieved.

In optional embodiments, the device further comprises:
- a pressure sensor configured to sense pressure exerted on the friction roller when the roller comes into contact with the glass,
- a detector for exceeding a predetermined pressure depending on the pressure captured and
- a means of activating and/or deactivating the drive motor depending on the detected crossing.

Thanks to these provisions, the device allows activation of the rotation of the roller only when it comes into contact with the window. In particular, the risks of uncontrolled projection of water containing washing products by rotation of the roller are therefore limited. Furthermore, deactivation of the rotation makes it possible to avoid continuous operation of the roller and therefore limits the energy consumption, for example in the form of electrical energy, of the device. Thus, the use of the device is easier and less energy-intensive.

In optional embodiments, the drive motor is configured to rotate the friction roller to direct wastewater toward the suction chute.

Thanks to these provisions, the device allows a rotation with a specific orientation towards the suction chute and therefore a direct suction of waste water. A more efficient suction of waste water is therefore achieved. Thus, uncontrolled discharges of waste water are effectively limited.

In optional embodiments, the friction roller has holes for passage of wash water.

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

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.

Thanks to these provisions, all of the washing water is brought into contact with the friction roller, circulating in particular through the passage holes. The combination of the roller and contact with all of the washing water therefore allows for more effective friction of the roller and thus optimal de-fouling.

In optional embodiments, the gripping handle further comprises a wash water injection lever, the device comprising a means for activating and/or deactivating the injection of wash water actuated by the injection lever.

Thanks to these provisions, the device allows the user to control, in real time and dynamically, the injected washing water. Water consumption is therefore limited directly by the user. In this way, significant water savings are achieved.

In optional embodiments, the gripping handle further comprises a telescopic portion.

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

In optional embodiments, the cleaning head further comprises a connector with the gripping handle comprising a movable connection.

These arrangements provide greater mobility of the cleaning head. Such mobility is ensured, for example, by a pivot connection or a ball joint. Thus, the orientation of the cleaning head is easily achieved, for example, according to the needs of the user.

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

Thanks to these provisions, the largest and heaviest elements of the device are supported by the user's back. In particular, when large volumes of water are consumed during cleaning, the use of the backpack makes it possible to distribute and support the masses of the different elements of the device. In addition, the backpack allows the user to move more easily while supporting the different loads. The mobility of the device is therefore increased, allowing in particular greater freedom of movement for the user. For example, such a device allows compatibility with rope work by a professional.

Claims (11)

Device (100, 200, 300, 400, 500, 600) for cleaning a window (101), characterized in that it comprises at least:
- a handle (105, 305, 405) for gripping by a user,
- a tank (110, 610) of washing water,
- a waste water tank (115, 615) and
- a cleaning head (120, 220, 320, 520), integral with the grip handle, comprising:
- a drive motor (125),
- a friction roller (130, 330) comprising a shaft (135) driven by the motor,
- a wash water injector (140, 340) connected to the wash water tank by a first pipe (145) and
- a waste water suction chute (150) connected to the waste water tank by a second pipe (155). Device (100, 200, 300, 400, 500) according to claim 1, in which 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) remote from the friction roller (130, 330). Device (100, 200, 300, 400, 500) according to one of claims 1 or 2, in which the cleaning head (120, 220, 320, 520) further comprises at least one friction plate (103, 104) configured to come into contact with the window (101). Device (200) according to one of claims 1 to 3, which further comprises:
- a pressure sensor (201) configured to sense a pressure exerted on the friction roller (130) during contact of the roller with the window (101),
- a detector (202) for exceeding a predetermined pressure as a function of the pressure captured and
- a means (203) for activating and/or deactivating the drive motor (125) depending on the detected crossing. Device (100, 200, 300, 400, 500) according to one of claims 1 to 4, in which the drive motor (125) is configured to rotate the friction roller (130, 330) so as to direct the waste water towards the suction chute (150). Device (300) according to one of claims 1 to 5, in which the friction roller (330) has orifices (301) for the passage of washing water. Device (300) according to claim 6, in which an outlet of the wash water injector (340) is arranged in an internal volume of the friction roller (330) delimited by the orifices (301) for the passage of wash water. Device (100, 200, 300, 400, 500) according to one of claims 1 to 7, in which the gripping handle (105, 305, 405) further comprises a lever (106) for injecting washing water, the device comprising a means (107) for activating and/or deactivating the injection of washing water actuated by the injection lever. Device (400) according to one of claims 1 to 8, in which the gripping handle (405) further comprises a telescopic portion (406). Device (500) according to one of claims 1 to 9, in which the cleaning head (520) further comprises a connector (502) with the gripping handle (105) comprising a movable connection (503). Device (600) according to one of claims 1 to 10 which further comprises a backpack (602) comprising:
- the washing water tank (610),
- the waste water tank (615),
- a means (612) for circulating wash water 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.