Cleaning device

Abstract

A cleaning device (10) comprises a main body (100), a lower cover plate (130), and a cleaning module (200). The lower cover plate is provided on the side of the main body facing the surface to be cleaned. A first opening (131) is formed on the lower cover plate. A housing cavity is formed between the main body and the lower cover plate. The projection of the housing cavity onto the surface to be cleaned and the projection of the opening (131) onto the surface to be cleaned overlap at least partially. The cleaning module comprises a module body (210) and a brush head (220), the module body being disposed in the housing cavity. One end of the module body is connected to the main body (100), and the brush head (220) is connected to the other end of the module body and is rotatable relative to the module body.At least a portion of the brush head (220) protrudes from the first opening (131) towards the surface to be cleaned in order to clean the first opening by interacting with the surface to be cleaned. Figure 4.

Description

Title of the invention: Cleaning device technical field

[0001] This disclosure relates to the technical field of the smart home, and more specifically to a cleaning device. Technological background

[0002] With the development of modern society, people are increasingly devoted to work and have little time to clean their homes. However, both daily cleaning and maintaining home hygiene have an impact on people's quality of life. In order to save time, maintain home hygiene, and more... <n plus de gens ont commencé à acheter des équipements de nettoyage pour nettoyer leurs habitations de manière opportune et pratique. Les appareils de nettoyage peuvent effectuer automatiquement le nettoyage du sol de la pièce grâce en ayant jusqu’à un certain point recours à une intelligence artificielle.

[0003] Most of the cleaning equipment in the technology concerned consists of sweeping robots. When the sweeping robot performs cleaning tasks, the brush heads of the cleaning robots can effectively sweep the floor.

[0004] It should be noted that the information disclosed in the back portion above is intended solely to enhance understanding of the context of this disclosure and may therefore include information that does not constitute prior art known to a person skilled in the art.

[0005] Content of the invention

[0006] The purpose of this disclosure is to propose a cleaning device.

[0007] According to one aspect of this disclosure, a cleaning device is proposed to clean a surface. The cleaning device includes:

[0008] a principal body;

[0009] a lower cover plate, which is arranged to cover one side of the main body facing the surface to be cleaned and which has a first opening, a housing cavity being formed between the main body and the lower cover plate such that, when projected onto the surface to be cleaned, the housing cavity and the first opening overlap at least partially; and

[0010] a cleaning module, which comprises: a module body, which is disposed in the housing cavity and has one end connected to the main body, and

[0011] a brush head, which is connected to the other end of the module body and is rotatable relative to the module body, at least a part of said brush head making protrusion out of the first opening towards the surface to be cleaned in order to carry out the cleaning by interfering with the surface to be cleaned.

[0012] In an exemplary embodiment of this disclosure, the first opening is located on an edge of said lower cover plate and forms a notch, and the module body is movable in the housing cavity to cause said brush head to move between a retracted position in which, when projected onto the surface to be cleaned, the brush head and the first opening overlap at least partially, and an extended position in which, when projected onto the surface to be cleaned, the brush head and the first opening are spaced apart from each other and / or partially overlap with respect to the main body.

[0013] In an exemplary embodiment of this disclosure, when the brush head is located in the retracted position, the overlap area between the projection of the lower cover plate and that of the module body on said surface to be cleaned being a, and the area of ​​the orthogonal projection of the module body on the surface to be cleaned being b, the quotient a / b is substantially between 0.6 and 0.8.

[0014] In an exemplary embodiment of this disclosure, the module body comprises:

[0015] - a fixed arm fixedly positioned in the housing cavity; and

[0016] - a swing arm, which has one end connected to the fixed arm and the other The end is fitted with said brush head,

[0017] the movement of the swing arm in the housing cavity causing the brush head to move between the retracted position and the extended position relative to said main body, the portion of the swing arm disposed in the housing cavity when said brush head is disposed in the retracted position being larger than the portion of the swing arm disposed in the housing cavity when the brush head is disposed in the extended position.

[0018] In an exemplary embodiment of this disclosure, said housing cavity is exposed in the direction of the peripheral side of said main body through a second opening, and the end of said swing arm connected to the brush head enters said housing cavity or exits said housing cavity through said second opening.

[0019] In an exemplary embodiment of this disclosure, said cleaning device further includes a bumper placed on the peripheral side of said main body.

[0020] In an exemplary embodiment of this disclosure, an anti-collision strip is disposed on a peripheral side of the swing arm in order to dampen the force of an impact received during oscillation.

[0021] In an exemplary embodiment of this disclosure, the brush head comprises:

[0022] a mounting part, connected to the module body and having a shape and size corresponding to the shape and size of the first opening;

[0023] a part of a brush head, configured to perform cleaning by interfering with the surface to be cleaned.

[0024] In an exemplary embodiment of this disclosure, when said brush head is in the retracted position, the curvature of the edge of the module body facing the peripheral side of the main body corresponds to the curvature of said peripheral side of the main body.

[0025] In an exemplary embodiment of this disclosure, the lower cover plate has a projection, located towards the side of the main body and formed in the area of ​​the edge of the first opening.

[0026] In an exemplary embodiment of this disclosure, said bumper provides a refuge space for said second opening.

[0027] It should be understood that the general description above and the detailed description that follows are only illustrative and explanatory and do not limit this disclosure. Brief description of the figures

[0028] The accompanying figures present examples of embodiments consistent with this disclosure and are used in conjunction with the description to explain the principles of this disclosure. It is understood that the accompanying figures described below represent only some of the embodiments of this disclosure.

[0029] Fig. 1 shows a schematic view of a cleaning device according to an embodiment of the present disclosure.

[0030] Figure 2 shows a schematic side view of a cleaning device according to a method of implementation of this disclosure.

[0031] Figure 3 shows a side cross-sectional view of a cleaning device according to a method of implementation of this disclosure.

[0032] Figure 4 shows a schematic view from below of a cleaning device according to an embodiment of this disclosure, while a cleaning module is in the retracted position.

[0033] Fig. 5 shows a schematic view from below of a cleaning device according to the present disclosure, with the cleaning module in an extended position.

[0034] Fig. 6 is a schematic view from below of a cleaning device according to an embodiment of the present disclosure, in which a lower cover plate is removed.

[0035] Figure 7 shows a schematic view of a lower cover plate according to one embodiment of the present disclosure.

[0036] Figure 8 shows a schematic view of a cleaning module according to an embodiment of the present disclosure.

[0037] List of numerical references:

[0038] 10, cleaning device;

[0039] 100, main body; 110, outer shell; 120, lower shell; 130, plate lower cover; 131, first opening; 132, projecting part; 140, second opening;

[0040] 200, cleaning module; 210, module body; 211, fixed arm; 212, arm oscillating; 220, brush head; 221, mounting part; 222, brush head part;

[0041] 300, battery. Detailed description

[0042] Examples of implementations will now be described in more detail with reference to the accompanying figures. However, the implementation examples can be implemented in various forms and should not be interpreted as being limited to the examples shown here; on the contrary, the presentation of these examples allows this disclosure to be exhaustive and complete and to fully explain the concepts of the implementation examples to those skilled in the art. The same numerals in the accompanying figures denote the same or similar structures, and their detailed descriptions will therefore be omitted.

[0043] Although relative terms such as "top" and "bottom" are used in this description to describe the relative relationship of one component shown to another, these terms are used in this description only for convenience, for example, in accordance with the orientation described with reference to the accompanying figures. When an element is "on" other elements, this may mean that the element in question is formed as one piece with the other elements, or that the element in question is "directly" disposed on the other elements, or that the element in question is "indirectly" disposed on the other elements, by way of another element.

[0044] The terms "a", "an", "the", "said" and "... are used to indicate the presence of one or more elements / components / etc. The terms "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to indicate an open inclusion and mean that there may be additional elements / components / etc. besides those listed.

[0045] The embodiments described herein relate to a cleaning device. As illustrated in Figures 1 to 8, the cleaning device 10 comprises a main body 100, a lower cover plate 130, and a cleaning module 200. The lower cover plate 130 is arranged to cover one side of the main body 100 facing a surface to be cleaned, a first opening 131 being formed on the lower cover plate 130. A housing cavity is formed between the main body 100 and the lower cover plate 130, and the projections from the housing cavity and the opening onto the surface to be cleaned overlap at least partially. The cleaning module 200 comprises a module body 210 and a brush head 220 connected to the module body 210, the module body 210 being disposed in the housing cavity and one end of the module body 210 being connected to the main body 100.The brush head 220 is connected to the module body 210 at its other end and can rotate relative to the module body 210. At least a part of the brush head 220 protrudes from the first opening 131 towards the surface to be cleaned, in order to perform the cleaning by interfering with the surface to be cleaned.

[0046] In the cleaning device 10 according to this disclosure, the module body 210 of the cleaning module 200 is located between the main body 100 and the lower cover plate 130, and the brush head 220 of the cleaning module 200 extends from the lower cover plate 130. Thus the brush head 220 is located outside the lower cover plate 130, and the lower cover plate 130 forms a protective shield for the module body 210.During the cleaning of the surface to be cleaned by the cleaning module 200, the brush head 220 is located outside the lower cover plate 130 to perform the cleaning operation, and the lower cover plate 130 forms a barrier for debris, in order to prevent debris from adhering to the module body 210 or from the surface of the module body 210 being worn or damaged by debris, as well as to prevent dust, wastewater, etc. from entering the module body 210 through the assembly gaps and damaging the devices within the module body 210. At the same time, thanks to the lower cover plate 130, when the cleaning operation is carried out by the cleaning device 10, the gap between the lower cover plate 130 and the surface to be cleaned forms a drainage channel. dirt, so that debris can enter the next processing area along the dirt evacuation channel formed between the lower cover plate 130 and the surface to be cleaned, which improves the debris cleaning effect and cleaning efficiency.

[0047] More specifically, as shown in [Fig.3], the main body 100 comprises an outer shell 110 and a lower shell 120. The outer shell 110 is formed with a housing cavity having an open end, the lower shell 120 is disposed in the housing cavity, and a lower cover plate 130 is disposed on a side of the lower shell 120 that is further from the outer shell 110. Thus, the lower cover plate 130 is disposed on the open end of the housing cavity.

[0048] In one embodiment, as shown in Figures 4 and 5, the module body 210 is movable within the housing cavity, the brush head 220 can be arranged in a retracted position and in an extended position relative to the main body 100, under the drive of the module body 210, and the first opening 131 in the lower cover plate 130 is formed by a notch located on the edge of the lower cover plate 130. When the brush head 220 is arranged in the retracted position, the projections of the brush head 220 and the first opening 131 on the surface to be cleaned overlap at least partially, i.e. that the brush head 220 can be arranged in the first opening 131.When the brush head 220 is positioned in the extended position, the projections from the brush head 220 and the first opening 131 onto the surface to be cleaned are spaced apart, i.e. the brush head 220 can be positioned outside the first opening 131.

[0049] When the brush head 220 is in the retracted position, it can perform normal sweeping operations to sweep debris from the sweeping area of ​​the brush head 220 towards the dirt suction port. When the brush head 220 is in the extended position, the corresponding sweeping area of ​​the brush head 220 is also extended to the outside of the cleaning unit 10, thus enabling sweeping operations to be performed in more areas to avoid the possibility of a cleaning dead corner and to improve the cleaning effect of the cleaning unit 10.For example, when the cleaning unit 10 as a whole has a circular or similar shape, when it is necessary to clean corners such as wall corners, the cleaning area of ​​the brush head 220 cannot cover the corners if the brush head 220 is in the retracted position, resulting in the inability to clean the corners and the formation of dead corners in terms of cleanliness. At this point, by placing the brush head 220 in the extended position, the brush head 220 may be outside the cleaning unit 10, which... The fact that the brush head 220 forms a cleaning zone which also moves to the outside side of the cleaning device 10, increasing the surface area of ​​the cleaning zone corresponding to the brush head 220, thus achieving the objective of cleaning dead corners such as corners, improving the cleaning effect of the cleaning device 10.

[0050] Of course, in the cleaning device 10 according to this disclosure, the brush head 220 can also be arranged in a fixed position, i.e. the module body 210 is arranged in a fixed position in the cleaning device 10, so that the brush head 220 is available to perform the sweeping operation in a single position, and this disclosure is not limiting in this respect.

[0051] As shown in [Fig. 8], the module body 210 comprises a fixed arm 211 and a swing arm 212. The fixed arm 211 is fixedly arranged in the housing cavity. One end of the swing arm 212 is connected to the fixed arm, and the other end is fitted with the brush head 220. The swing arm 212 swings back and forth within a predefined angle range, and the predefined angle can be from 20° to 120°, such as 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, etc., the possible values ​​not being listed in this disclosure.

[0052] More specifically, the oscillating arm 212 can be equipped with a set of gears to drive the brush head 220 to rotate at high speed via an output shaft of the drive system. The rotational speed of the brush head 220 can be from 500 rpm to 3000 rpm to improve efficiency and cleaning effect, with a rotational speed of, for example, 500 rpm, 800 rpm, 1000 rpm, 2000 rpm, 3000 rpm, etc., which this disclosure will not list here. Of course, the rotational speed of the brush head 220 can also be less than 500 rpm or greater than 3000 rpm, and this disclosure does not limit it.

[0053] A housing space can be formed in the swing arm 212 for mounting the gear assembly in the swing arm 212. The swing arm 212 as a whole can have a rectangular or similar shape, the extension direction of the swing arm 212 can be the direction of its length X. The swing arm 212 oscillates in a direction of its width Y. The housing space formed in the swing arm 212 in the direction of its thickness Z, is dimensioned to be just sufficient to accommodate the gear assembly, so as to prevent the size of the swing arm 212 from being too large.

[0054] The swing arm 212 can be made to swing back and forth by means of the drive assembly within a predefined angle range, and the drive assembly driving the swing arm 212 and the drive assembly driving the brush head 220 can be two independent drive assemblies. Alternatively, the swing arm 212 is rotationally coupled with the assembly of drive, and the swing arm 212 is not driven by the drive assembly, but the swing arm 212 can swing relative to the drive assembly by application of an external force in order to change the position of the brush head 220 relative to the main body 100.

[0055] In one embodiment, as shown in [Fig.2], the housing cavity is exposed in the direction of the peripheral side of the main body 100 through the second opening 140, and the end of the swing arm 212 connected to the brush head 220 enters or exits the housing cavity through the second opening 140.

[0056] The second opening 140 can be formed by an opening on the edge of the outer shell 110 of the main body 100, the size of the opening corresponding to the size of the module body 210 to allow the end of the swing arm 212 connected to the brush head 220 to enter the housing cavity or exit the housing cavity through the second opening 140.

[0057] In one embodiment, the cleaning device further includes: a bumper, the bumper being disposed on the peripheral side of the main body 100 and providing a refuge space for the second opening 140.

[0058] In this regard, by providing a bumper, on the one hand, the second opening 140 is provided with a refuge space and, on the other hand, the main body 100 is provided with an anti-collision damping effect.

[0059] In one embodiment, the swing arm 212 is equipped with anti-collision strips on the peripheral side of the swing arm 212 in order to attenuate the impact forces received during oscillation.

[0060] The anti-collision strip on the peripheral side of the swing arm 212 may be a rubber strip to provide a better anti-collision effect while preventing the anti-collision strip from occupying too much space. Of course, other elastic elements may also be supplied by those skilled in the art, and this disclosure is not limiting in this respect.

[0061] In one embodiment, the lower cover plate 130 forms a protective shield for the module body 210. When the brush head 220 is in the retracted position, the overlap area between the projection of said lower cover plate 130 onto said surface to be cleaned and the projection of the module body 210 onto said surface to be cleaned being a, and the area of ​​the orthogonal projection of said module body 210 onto said surface to be cleaned being b, a / b is on the order of 0.6 to 0.8. For example, a / b is 0.6, 0.65, 0.7, 0.75, 0.8, etc., without limitation. By ensuring that the ratio between the overlap area between the projection of said lower cover plate 130 onto said surface to be cleaned and the projection of the module body 210 onto said surface to be cleaned is a, and the orthogonal projection of said module body 210 onto said surface to be cleaned is of the order of 0.6 to 0.8, the lower cover plate 130 is able to protect a large part of the surface of the module body 210, and the protective effect of the module body 210 is improved.

[0062] In one embodiment, the outer casing 110 can be a complete housing for the cleaning device 10, and when the cleaning device 10 as a whole has the shape of a circle, an ellipse, a circular shape, etc., the outer casing 110 comprises a top cover portion and an annular side wall portion. The top cover portion and the annular side wall portion define a housing cavity, which is used to assemble a variety of modules, for example, a fluid supply module, a battery module, a control module, a dirt suction module, a floor cleaning module, an induction module, etc.

[0063] The orthogonal projection of the module body 210 onto the outer shell 110 is entirely located on the upper cover portion when the brush head 220 is in the retracted position. The edge of the lower cover plate 130 is generally located inside the edge of the complete machine housing to prevent the lower cover plate 130 from blocking the complete machine when it is moved. For this reason, the edge of the lower cover plate 130 is located inside the edge of the outer shell 110; that is, the orthogonal projection of the lower cover plate 130 onto the outer shell 110 is entirely located on the upper cover portion of the outer shell 110. When the brush head 220 is in the retracted position, the orthogonal projection of the module body 210 onto the outer shell 110 is entirely located on the upper cover portion of the outer shell 110.Thus, the lower cover plate 130 can form a better protective shield for the module body 210.

[0064] In one embodiment, as shown in [Fig. 6], the battery module comprises a rechargeable battery 300, such as a nickel-metal hydride battery or a lithium battery. The rechargeable battery can be connected to a charge control circuit, a battery pack charging temperature detection circuit, and a battery undervoltage monitoring circuit, all of these elements being in turn connected to the microcontroller control circuit. The cleaning device 10 can be charged by charging electrodes located on the body, for example, on the side, bottom, or top of the body, and connected to the charging terminals.

[0065] More specifically, the battery module is assembled to the main body 100, an orthogonal projection of the lower cover plate 130 onto the outer shell 110 covers an orthogonal projection of the battery module onto the outer shell 110, and the lower cover plate 130 forms a protection for the battery module, i.e. the lower cover plate 130 can be a lower cover plate of the battery.

[0066] A mounting space for the battery module can be formed on the main body 100. Once the battery module is assembled in the mounting space, the battery module is covered by the lower cover plate 130. Alternatively, part of the battery module is disposed in the housing cavity between the outer shell 110 and the lower cover plate 130, and part of the battery module is exposed through the first opening 131 for mounting on the main body 100, then the lower cover plate 130 is used to create the protective shield for the battery module exposed from the main body 100.

[0067] The lower cover plate 130 can be removably connected to the main body 100. For example, the main body 100 has a plurality of threaded holes and the lower cover plate 130 has a plurality of through holes. Once the lower cover plate 130 and the main body 100 have been aligned, the plurality of threaded holes and the plurality of through holes are arranged in a corresponding pattern. Then, the lower cover plate 130 is removably attached to the main body 100 by screws driven through the through holes and into the threaded holes. In this way, the lower cover plate 130 can be removably connected to the main body 100, which facilitates maintenance and replacement of other modules such as the battery module.For example, when the cleaning device 10 has to operate continuously, the battery module is usually powered for a long period, and the battery in the battery module can be configured as a quick-disconnect battery, so that the cleaning device 10 can operate continuously by replacing the spare battery, and cleaning efficiency can be improved.

[0068] Of course, the lower cover plate 130 and the main body 100 can also be removably connected to each other by means of expansion nails, clamps, snap fasteners, or adhesive bonding, etc. This disclosure is not limiting in this respect.

[0069] In one embodiment, when the brush head 220 is in the retracted position, the edge of the module body 210 near the periphery of the cleaning device 10 is exposed; that is, the lower cover plate 130 does not completely cover the module body 210. The shape of the edge of the lower cover plate 130 corresponds to the shape of the edge of the outer shell 110, which may be arc-shaped as illustrated in Figures 5 and 7. Since the width of the module body 210 is not exactly the same in all positions in in the length direction X, the lower cover plate 130 cannot completely cover the module body 210, so that the edge of the module body 210 is partially exposed. In the width direction Y of the module body 210, the spacing between the edge of the orthogonal projection of the lower cover plate 130 (except for the first opening 131) on the outer shell 110, and the edge of the orthogonal projection of the module body 210 on the outer shell 110 being c, and the width of the module body 210 being d, the quotient c / d is on the order of 0.05 to 0.2, for example being on the order of 0.05, 0.08, 0.1, 0.12, 0.15, 0.18, 0.2, etc., or other values ​​not listed in this disclosure.

[0070] Of course, the shape and size of the lower cover plate 130 can be defined so that the edge of the orthogonal projection of the lower cover plate 130 onto the outer shell 110, with the exception of the first opening 131, is located outside the edge of the orthogonal projection of the module body 210 onto the outer shell 110. The part of the lower cover plate 130 other than the first opening 131 can completely cover the module body 210 in the Y-width direction of the module body 210, thus improving the shielding effect on the module body 210.

[0071] In one embodiment, when the brush head 220 is in the retracted position, the curvature of the edge of the module body 210 facing the peripheral side of the main body 100 corresponds to the curvature of the edge of the lower cover plate 130 facing the peripheral side of the main body 100. By matching the curvature of the edge of the module body 210 facing the peripheral side of the main body 100 with the curvature of the edge of the lower cover plate 130 facing the peripheral side of the main body 100, the blocking area of ​​the module body 210 can be improved, thus improving the blocking effect.

[0072] Of course, for example, where the edge of the module body 210 facing the peripheral side of the main body 100 is irregularly shaped, the edge of the lower cover plate 130 facing the peripheral side of the main body 100 may not be arranged to correspond to the edge of the module body 210 facing the peripheral side of the main body 100, and the edge of the lower cover plate 130 facing the peripheral side of the main body 100 may be curved, so as to ensure that the lower cover plate 130 can protect the module body 210 as much as possible. This disclosure is not restrictive in this respect.

[0073] In one embodiment, as shown in Figures 4 and 8, the brush head 220 comprises a mounting portion 221 and a brush head portion 222, and the mounting portion 221 is connected to the module body 210. When the brush head 220 is in the retracted position, the mounting portion 221 is arranged in the first opening 131, and the shape and size of the first opening 131 are adapted to the shape and size of the mounting part 221. By matching the shape and size of the first opening 131 with the shape and size of the mounting part 221, it is possible to relatively reduce the size of the first opening 131, to avoid the gap between the mounting part 221 and the edge of the first opening 131 being too large, and thus improve the blocking area of ​​the lower cover plate 130 on the module body 210.For example, when the mounting part 221 is circular, the edge of the first opening 131 is U-shaped overall, and the edge of the inner side of the U-shaped opening is curved in an arc to match the mounting part 221, the arc-shaped edges and the edges of the mounting part 221 being concentric circles in order to further reduce the size of the first opening 131.

[0074] When the brush head 220 is in the retracted position, the mounting part 221 is entirely located in the first opening 131. By placing the mounting part 221 completely in the first opening 131, it is possible to fully accommodate the mounting part 221 through the first opening 131, and thus increase the surface area of ​​the protection of the module body 210 by the lower cover plate 130. Of course, the mounting part 221 can also be partially arranged in the first opening 131, and the present disclosure does not limit it.

[0075] The mounting part 221 is removably connected to the module body 210. For example, the mounting part 221 can be attached to the module body 210 with screws. The removable connection of the mounting part 221 to the module body 210 facilitates maintenance and replacement of the brush head 220.

[0076] In one embodiment, as illustrated in Figures 2 to 4, the lower cover plate 130 has a projecting part 132, formed on the region of the edge of the first opening 131 and projecting towards the side of the main body 100. Thus, a recessed region, which is recessed towards the interior of the housing cavity, is formed on the region of the edge of the first opening 131 of the lower cover plate 130.

[0077] One end of the brush head portion 222 is connected to the mounting portion 221, and the other end extends from the protruding portion 132 to make contact with the surface to be cleaned and sweep away debris. The presence of the protruding portion 132 facilitates the installation of the brush head 220 and allows the lower cover plate 130 to cover as much of the module body 210 area near the mounting portion 221 as possible, thus improving the protective shield effect on the module body 210.

[0078] As one end of the brush head portion 222 is connected to the mounting portion 221, the brush head portion 222 going towards its other end is The extension is gradually curved and extends towards a side away from the lower cover plate 130, so that the brush head portion 222 can come into contact with the surface to be cleaned. The projection height of the protruding portion 132 towards the housing cavity can be adapted to the curvature of the curved extension of the brush head portion 222, so that the distance between the brush head portion 222 and the lower cover plate 130 in the direction of extension remains the same or substantially the same.

[0079] In one embodiment, the cleaning device 10 is equipped with a dirt suction module, the dirt suction module comprising a negative pressure fan, a dirt suction tank and a dirt suction channel, an outlet of the dirt suction channel being connected to the suction tank, an inlet of the dirt suction channel being exposed from the lower cover plate 130, and the negative pressure fan being connected to the dirt suction tank to maintain the dirt suction tank in a negative pressure state when the cleaning device 10 performs a sweeping operation, so that the inlet of the dirt suction channel is in a negative pressure state.

[0080] The brush head 220 is adjacent to the dirt suction port, and, thanks to the high-speed rotation of the brush head 220, debris can be swept near the dirt suction port, then the debris is sucked into the dirt suction channel through the dirt suction port under the effect of negative pressure, and then enters the dirt suction tank, so as to carry out the operation of sweeping debris from the surface to be cleaned.

[0081] The dirt suction port is located in a median region of the lower part of the cleaning device 10, and the brush head 220 is located diagonally, in front of the dirt suction port so that the debris swept by the brush head 220 can be located substantially in the middle of the dirt suction port, thus allowing better access of the swept debris into the dirt suction port.

[0082] The negative pressure supplied by the negative pressure fan can be from 3000 Pa to 7000 Pa, in order to improve the negative pressure absorption effect on the debris; it can, for example, be 3000 Pa, 4000 Pa, 5000 Pa, 6000 Pa, 7000 Pa, etc., other values ​​not listed in this disclosure being possible. Of course, the negative pressure supplied by the negative pressure fan can be less than 3000 Pa or greater than 7000 Pa; this disclosure will not be limited in this respect.

[0083] A roller brush rotating around an axis parallel to the floor may also be provided at the dirt suction inlet. The roller brush, having some contact with the floor, sweeps the debris across the floor, rolls it up, and transports it. in the dirt suction channel. Then, the debris is sucked into the dirt suction tank by the suction flow generated by the negative pressure fan and passing through the dirt suction tank.

[0084] In one embodiment, the detection module includes a position determination device disposed on the main body 100, a collision sensor disposed on a bumper of the forward-facing part of the main body 100, a proximity sensor disposed on the outer shell 110, a spike sensor disposed on the lower part of the main body 100, and detection devices such as a magnetometer, an accelerometer, a gyroscope, an odometer, and others, disposed inside the main body 100, to provide the control module with various information on the position and movement state of the cleaning device 10. The position determination device may be a camera or a laser distance measuring device.

[0085] In one embodiment, the control module is provided on a circuit board inside the main body 100, comprising non-transient memory, for example a hard drive, flash memory, RAM, a communication processing unit, for example a central processing unit, and an application processor. The application processor uses a positioning algorithm, such as a real-time positioning algorithm and map-making algorithms, as well as obstacle information returned by laser rangefinders, to generate a real-time map of the environment in which the cleaning device is located. Furthermore, by combining distance and speed information returned by sensing means such as the bumper sensor, the spike sensor, the magnetometer, the accelerometer, the gyroscope, the odometer, etc.It is possible to comprehensively determine the current operating status of the cleaning device 10, its location, and its current position, such as crossing a threshold, accessing a carpet, encountering a drop, being stuck from above or below, having a full dustbin, being picked up, etc. Furthermore, a specific action strategy will be provided for different situations, resulting in improved cleaning performance and a better user experience.

[0086] In one embodiment, the drive module can maneuver the cleaning device 10 to move across the floor based on drive commands containing information about distance and angle (for example, the x, y, and 0 components). The drive module may include a first drive wheel module and a second drive wheel module. The first and second drive wheel modules are arranged along an axis. The transverse dimension is defined by the cleaning unit 10. To enable the cleaning unit 10 to move more stably or with greater mobility across the floor, the cleaning unit 10 may include one or more drive wheels, the drive wheels including, but not limited to, universal wheels. The drive wheel module comprises a travel wheel, a drive motor, and a control circuit for the drive motor. The drive wheel module may also be connected to a drive current measurement circuit and an odometer. The drive wheel module may be removably attached to the main body 100 to facilitate removal, installation, and maintenance.The drive wheel can be equipped with a down-return type suspension system, removably fixed, for example rotatably, to the main body 100, and receiving a spring that returns it downwards and away from the main body 100. The return of the spring allows the drive wheel to maintain contact and traction on the ground with a certain landing force, while the cleaning head of the cleaning device 10 makes contact with the ground with a certain pressure.

[0087] In one embodiment, the cleaning device 10 further comprises a mop cleaning module and a liquid supply module, the mop cleaning module comprising a wet cleaning head, and the liquid supply module comprising a liquid supply assembly, the liquid supply assembly providing cleaning liquid to the wet cleaning head. The cleaning head can be positioned under the liquid supply assembly, and the cleaning liquid contained in the liquid supply assembly is transferred to the cleaning head via a water distribution mechanism to enable the cleaning head to wet clean the surface to be cleaned.Of course, the cleaning fluid contained in the fluid supply assembly can also be sprayed directly onto the surface to be cleaned, and the cleaning head allows the surface to be cleaned by spreading the cleaning fluid evenly.

[0088] As shown in [Fig. 1], the cleaning head can be located at the bottom of the cleaning device 10, and the cleaning head can, for example, be a cleaning block positioned parallel to the surface to be cleaned. The cleaning head is used to clean the surface to be cleaned, and the drive assembly is used to drive the cleaning head in a substantially reciprocating motion along a target surface, the target surface being a portion of the surface to be cleaned. The cleaning head moves back and forth along the surface to be cleaned, and a cleaning cloth or pad is placed on the contact surface between the cleaning head and the surface to be cleaned. This generates high-frequency friction with the surface to be cleaned by means of the back-and-forth motion in order to remove stains from the surface to be cleaned. The higher the friction frequency, the more occurrences of of friction per unit of time. High-frequency reciprocating motion has a much better cleaning capacity than ordinary reciprocating motion, such as rotary and friction cleaning. Optionally, the friction frequency is close to that of sound waves, and the cleaning effect will be far superior to that of rotary friction cleaning at dozens of revolutions per minute. Furthermore, the tufts of bristles on the surface of the cleaning head will spread more evenly in the same direction under the effect of high-frequency vibrations, resulting in a more uniform overall cleaning effect. This differs from simply applying downward pressure to increase friction and improve the cleaning effect with low-frequency rotation. Downward pressure alone will not cause the tufts of bristles to spread in the same direction.The effect achieved is that watermarks on the surface to be cleaned after high-frequency vibration cleaning are more uniform and do not leave unsightly water spots.

[0089] In the cleaning device 10 according to this disclosure, the module body 210 of the cleaning module 200 is located between the main body 100 and the lower cover plate 130, and the brush head 220 of the cleaning module 200 extends from the lower cover plate 130. Thus, the brush head 220 is located outside the lower cover plate 130, and the lower cover plate 130 forms a protective shield for the module body 210. When the cleaning module 200 sweeps the surface to be cleaned, the brush head 220 is located outside the lower cover plate 130 to perform the cleaning operation, and the lower cover plate 130 forms a barrier for debris. This prevents debris from adhering to the module 210 body or the surface of the module 210 body from being worn by debris, and also prevents dust, wastewater, etc.do not enter the module body 210 through the mounting gaps and do not damage the devices in the module body 210. At the same time, thanks to the lower cover plate 130, when the cleaning operation is carried out by the cleaning device 10, the gap between the lower cover plate 130 and the surface to be cleaned forms a dirt evacuation channel, so that the debris can enter a subsequent processing area along the dirt evacuation channel formed between the lower cover plate 130 and the surface to be cleaned, which improves the debris cleaning effect and the cleaning efficiency.

Claims

Demands

1. Cleaning apparatus for cleaning a surface to be cleaned, characterized in that it comprises: - a main body (100), - a lower cover plate (130), which is arranged so as to cover the side of the main body facing the surface to be cleaned and which has a first opening (131), a housing cavity being formed between the main body and the lower cover plate such that, when projected onto the surface to be cleaned, the housing cavity and the first opening overlap at least partially;and - a cleaning module (200), which includes: - a module body (210), which is disposed in the housing cavity and has one end connected to the main body, and a brush head (220), which is connected to the other end of the module body and is rotatable relative to the module body, at least a portion of said brush head protruding out of the first opening in the direction of the surface to be cleaned in order to perform the cleaning by interfering with said surface to be cleaned.;

2. A cleaning device according to claim 1, wherein: - the first opening (131) is located on an edge of the lower cover plate and forms a notch; and - the module body (210) is movable in said housing cavity to cause the brush head to adopt a retracted position in which, when projected onto the surface to be cleaned, the brush head and the first opening overlap at least partially, and an extended position in which, when projected onto the surface to be cleaned, the brush head and the first opening are separated from each other and / or partially overlap with respect to the main body.

3. A cleaning apparatus according to claim 2, wherein, when the brush head (220) is in the retracted position, the overlap area between the projection of the lower cover plate (130) and that of the module body (210) on the surface to be cleaned is a, and the orthogonal projection of said module body on the surface to be cleaned being b, the quotient a / b is approximately between 0.6 and 0.

8.

4. Cleaning apparatus according to claim 2 or 3, wherein the module body (210) comprises: - a fixed arm (211) disposed fixed in the housing cavity; and - a swinging arm (212), which has one end connected to the fixed arm and the other end of which is provided with said brush head, the movement of the swinging arm in the housing cavity causing said brush head (220) to move between the retracted position and the extended position relative to said main body, the portion of the swinging arm disposed in said housing cavity when said brush head is disposed in the retracted position being larger than the portion of said swinging arm disposed in said housing cavity when the brush head is disposed in the extended position.

5. Cleaning apparatus according to claim 4, wherein the housing cavity is exposed in the direction of the peripheral side of said main body (100) through a second opening (140), and the end of said swing arm (212) connected to the brush head (220) enters said housing cavity or exits said housing cavity through said second opening.

6. Cleaning apparatus according to claim 5, further comprising a bumper placed on the peripheral side of said main body (100).

7. Cleaning device according to any one of claims 4 to 6, wherein an anti-collision strip is disposed on a peripheral side of the swing arm (212) in order to dampen the force of an impact received during oscillation.

8. Cleaning device according to claim 2, characterized in that the brush head (220) comprises: a mounting part, connected to the module body and having a shape and size corresponding to the shape and size of the first opening; a brush head part, configured to perform the cleaning by interfering with said surface to be cleaned.

9. A cleaning apparatus according to any one of claims 2 to 8, wherein, when said brush head (220) is in the retracted position, the curvature of the edge of the module body (210) is rotated towards the peripheral side of the main body (100) corresponds to the curvature of said peripheral side of the main body.

10. Cleaning apparatus according to any one of claims 1 to 9, wherein the lower cover plate (130) has a projection, located towards the side of the main body (100) and formed in an area of ​​the edge of the first opening (131).

11. Cleaning apparatus according to claim 6, taken in combination with any one of claims 1 to 10, wherein said bumper provides a refuge space for said second opening.

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