Robot cleaner

Abstract

Provided is a robot cleaner in which cleaning fluid is supplied to a mop which rotates and moves up and down as necessary. A robot cleaner according to one aspect of the present invention comprises: a main body; a mop unit, below the main body, in which a mop that can rotate about a mop rotation axis running in the longitudinal direction is installed; and a fluid supply unit for supplying a fluid to the mop unit, wherein the mop unit includes: a mop plate in which the mop is installed, which can rotate about the mop rotation axis, and which supplies fluid to the mop through a first flow path through which the fluid can be introduced; and a flow path connector which is installed such that the rotation thereof is limited when the mop plate rotates, and which supplies the fluid to the mop plate through a connection flow path connecting the first flow path and the fluid supply unit.

Description

robot vacuum cleaner

[0001] The present invention relates to a robot vacuum cleaner, and more particularly, to a robot vacuum cleaner in which a cleaning fluid is supplied to a mop that rotates and rises as needed.

[0002] A robot vacuum cleaner, which includes a motor, various sensors, and artificial intelligence (AI), can be configured to move around and clean the area that needs cleaning on its own.

[0003] A robot vacuum cleaner can be configured to suck up dust, sweep up dust, or wipe the cleaning surface using a mop.

[0004] In a robot vacuum cleaner, the mop can be used by being attached to a mop plate, and mopping can be done while the mop plate rotates.

[0005] Some robot vacuum cleaners are equipped with a water tank, and some robot vacuum cleaners are used to perform mopping using the water stored in the water tank.

[0006] Meanwhile, development is being actively pursued on a structure that allows the mop of a robot vacuum cleaner to be raised and lowered so that driving and cleaning can continue without interruption when the robot vacuum cleaner encounters an obstacle or passes through an uneven area during its driving process.

[0007] In relation to the above-mentioned cleaner, Korean Patent No. KR 10-0470320 B1 (hereinafter referred to as “prior document 1”) discloses a steam cleaner having a vacuum cleaning function.

[0008] Specifically, a steam generating means, a rotary plate having a steam inlet hole formed in the center of the upper surface through which steam is introduced and a steam injection hole formed in the lower surface through which a mop is placed, a steam guiding means for guiding steam generated in the steam generating means to the steam inlet hole, and a rotary means for rotating the rotary plate are disclosed.

[0009] However, the cleaner of prior art document 1 has a problem in that the path for supplying steam to the mop is connected to the rotating shaft of the rotating plate on which the mop is placed, but it is difficult to apply it to a structure for raising and lowering the rotating plate and mop because this path is fixed.

[0010] And, US registered patent US 10149590 B2 (hereinafter referred to as “prior document 2”) discloses a robot vacuum cleaner.

[0011] Specifically, it discloses a plurality of motors configured to transmit driving force, a pad assembly connected to one of the plurality of motors and configured to receive rotational force from the motor and rotate to clean a floor surface, a wire connected so that the pad assembly tilts by the driving force of the motor, a configuration in which the pad assembly tilts by the wire, and a configuration in which water is supplied to the pad assembly.

[0012] However, the cleaner of prior art document 2 has a problem in that the water supply to the mop for cleaning is inefficient because the pad assembly on which the mop is placed can be tilted as needed, but the water path for supplying water to the pad assembly is not located on the rotation axis of the pad assembly.

[0013] As described above, in the case of a robot vacuum cleaner that supplies fluid for cleaning with a mop that rotates and rises, there is a problem that must be solved to ensure that the fluid is supplied to the mop efficiently while ensuring that the rotation and rise are not hindered.

[0014] However, conventional robot vacuum cleaners have limitations in that they cannot adequately solve these problems.

[0015] The present invention aims to solve the above-mentioned problems of a robot vacuum cleaner that supplies fluid to a mop that rotates and rises.

[0016] Specifically, the present invention aims to provide a robot vacuum cleaner in which a structure for supplying fluid to a mop is formed in a structure that does not interfere with the rotation and elevation of the mop, thereby enabling smooth fluid supply to the mop.

[0017] In addition, the present invention aims to provide a robot vacuum cleaner in which a structure for supplying fluid to a mop is formed on the rotating axis of the mop, thereby efficiently supplying fluid to the mop.

[0018] In addition, the present invention aims to provide a robot vacuum cleaner in which a structure for supplying fluid to a mop is configured to maintain a stable state even when the mop rotates and rises, thereby enabling smooth fluid supply to the mop.

[0019]

[0020] The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0021] To achieve the above or other purposes, a robot vacuum cleaner according to one aspect of the present invention is configured to ensure that fluid is supplied to the mop without any problems even when the mop unit rotates and is raised or lowered. Specifically, the robot vacuum cleaner is configured to supply fluid to the mop through a flow connection whose rotation is restricted when the mop plate in the mop unit rotates.

[0022] In addition, a robot vacuum cleaner according to one aspect of the present invention is configured such that a flow path for supplying fluid to a mop is formed on the rotational axis of the mop. Specifically, a first flow path for introducing fluid to a mop plate on which the mop is installed is configured such that the first flow path is formed on the rotational axis of the mop.

[0023] In addition, a robot cleaner according to one aspect of the present invention can be coupled so that a guide protrusion formed on an outer surface of a gear connecting body engages with a screw thread formed on an inner surface of a mop shaft.

[0024] In addition, a robot vacuum cleaner according to one aspect of the present invention can provide rotational force to a rotary gear coupled to a gear connecting body through a driving motor.

[0025] In addition, a robot vacuum cleaner according to one aspect of the present invention may have a worm gear and a worm wheel arranged between the driving motor and the rotating gear.

[0026] In addition, a robot vacuum cleaner according to one aspect of the present invention may have a through hole formed in a portion of the actuator case where the mop rotation axis is located.

[0027] In addition, a robot cleaner according to one aspect of the present invention can be raised and lowered along a through hole while the euro connector is restricted from rotating.

[0028] In addition, in a robot cleaner according to one aspect of the present invention, a hook protruding outward from a euro connector can be inserted into a hook groove of a through hole.

[0029] In addition, a robot vacuum cleaner according to one aspect of the present invention can partially prevent rotation of the mop shaft by having a rotational resistance body come into contact with the outer surface of the mop shaft.

[0030] In addition, a robot cleaner according to one aspect of the present invention may have a bearing interposed in a portion of a uranium connecting body connected to the second uranium.

[0031] In addition, a robot cleaner according to one aspect of the present invention can cover the upper part of the second euro with the lower part of the euro connecting body.

[0032] In addition, a robot vacuum cleaner according to one aspect of the present invention can supply water stored in a water tank to a mop and use it for cleaning.

[0033] In addition, a robot cleaner according to one aspect of the present invention can be used for cleaning by supplying water to a mop unit after it has been heated in a heater.

[0034] In addition, a robot vacuum cleaner according to one aspect of the present invention may include at least one of water and steam as the fluid supplied to the mop for cleaning.

[0035] In addition, a robot vacuum cleaner according to one aspect of the present invention is provided with a pair of mop parts, and fluid can be supplied to each mop part.

[0036] In addition, a robot vacuum cleaner according to one aspect of the present invention may have one water tank and one heater connected together to each of a pair of mop parts.

[0037]

[0038] The means for solving the technical problems to be solved by the present invention are not limited to the means for solving the problems mentioned above, and other means for solving the problems not mentioned will be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0039] FIG. 1 is a perspective view illustrating a robot vacuum cleaner according to one embodiment of the present invention.

[0040] FIG. 2 is a side view illustrating a robot vacuum cleaner according to one embodiment of the present invention.

[0041] FIG. 3 is a plan view illustrating a robot vacuum cleaner according to one embodiment of the present invention.

[0042] FIG. 4 is a drawing schematically showing some components of a robot vacuum cleaner and the movement of water stored in a water tank according to one embodiment of the present invention.

[0043] FIG. 5 is a drawing showing the inside of a robot vacuum cleaner according to one embodiment of the present invention.

[0044] FIG. 6 is a drawing schematically showing a configuration in which fluid is supplied to a pair of mop parts in a robot vacuum cleaner according to one embodiment of the present invention.

[0045] Fig. 7 is a perspective view showing a mop part in a robot vacuum cleaner according to one embodiment of the present invention.

[0046] FIG. 8 and FIG. 9 are drawings showing the lifting and lowering of the mop part in a robot vacuum cleaner according to one embodiment of the present invention.

[0047] Fig. 10 is an exploded perspective view showing a mop part in a robot vacuum cleaner according to one embodiment of the present invention.

[0048] FIG. 11a is a drawing showing a state in which fluid is supplied to a mop part in a robot vacuum cleaner according to one embodiment of the present invention.

[0049] Figure 11b is a drawing exemplarily showing the map flow path of the map plate in the drawing shown in Figure 11a.

[0050] Fig. 12 is a cross-sectional view showing a through hole of an actuator case in a robot vacuum cleaner according to one embodiment of the present invention.

[0051] FIG. 13 is a drawing showing a state in which a euro connector is installed in a through hole of an actuator case in a robot vacuum cleaner according to one embodiment of the present invention.

[0052] Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings to explain the present invention in more detail. Like reference numbers designate like components throughout the detailed description.

[0053] The X, Y, and Z directions shown in the drawing are each orthogonal to each other. The X direction can be understood as a direction facing forward, the Y direction can be understood as a direction facing left, and the Z direction can be understood as a direction facing upward.

[0054]

[0055] Fig. 1 is a perspective view illustrating a robot cleaner (1) according to one embodiment of the present invention. Fig. 2 is a side view illustrating a robot cleaner (1) according to one embodiment of the present invention. Fig. 3 is a plan view illustrating a robot cleaner (1) according to one embodiment of the present invention. Fig. 4 is a drawing schematically illustrating some components of a robot cleaner (1) according to one embodiment of the present invention and the movement of water stored in a water tank (120).

[0056] The robot cleaner (1) according to an embodiment of the present invention is configured to be placed on a floor surface (B) and move along the floor surface (B) to clean the floor surface (B). Accordingly, the following description will be made with the up-down direction determined based on the state in which the robot cleaner (1) is placed on the floor surface (B) so that it can clean according to its intended use.

[0057] The main body (100) may form the overall exterior of the robot cleaner (1) or may be formed in the form of a frame. Each component of the robot cleaner (1) may be combined into the main body (100), and some components of the robot cleaner (1) may be accommodated inside the main body (100).

[0058] A robot vacuum cleaner (1) according to an embodiment of the present invention may include a bumper (110) to absorb external shock and / or detect contact with an external object. The bumper (110) may be coupled to the edge of the main body (100), and in this case, the bumper (110) may be configured to be movable relative to the main body. The bumper (110) may be coupled to the front edge of the main body (100).

[0059] A plurality of elastic bodies (not shown) may be provided between the bumper (110) and the main body (100), and the bumper (110) may be elastically supported by the elastic bodies against the main body (100). When the bumper (110) comes into contact with an external object and is pressed toward the main body (100), the elastic bodies are elastically deformed (compressed), and then the bumper (110) may be restored to its original position when the elastic bodies are elastically restored.

[0060] In an embodiment of the present invention, the main body (100) may be formed in a form in which the size (width or diameter) in the horizontal direction (direction parallel to X and Y) is larger than the size (height) in the vertical direction (direction parallel to Z). Such a main body (100) can help the robot cleaner (1) to have a stable structure and provide a structure that is advantageous in avoiding obstacles when the robot cleaner (1) moves (drives).

[0061] When viewed from above or below, the body (100) can be formed in various shapes, such as circular, oval, or square.

[0062] Meanwhile, as described in the embodiment of the present invention, the robot cleaner (1) is composed of several parts and has a structural characteristic of a relatively flat structure, so reduction of the space occupied by the components (parts) of the robot cleaner (1) or efficient arrangement is considered as a very important factor in the design of the robot cleaner (1).

[0063] A robot cleaner (1) according to an embodiment of the present invention comprises a water tank (120) and a water treatment filter (300), and in forming each structure and joint structure of the water tank (120) and the water treatment filter (300), the function of the water treatment filter (300) is effectively performed while minimizing the space occupied by the robot cleaner (1).

[0064] A robot vacuum cleaner (1) according to an embodiment of the present invention includes a water tank (120) in which water is stored, and is configured to discharge the water stored in the water tank (120) for use as needed.

[0065] The water in the water tank (120) can be used for cleaning by being supplied to the outside of the robot cleaner (1) by a pump (610, 620) or the like provided in the robot cleaner (1).

[0066] In a robot vacuum cleaner (1) according to an embodiment of the present invention, water from a water tank (120) can be supplied toward a mop (700, 710, 720), and accordingly, mop cleaning can be performed while the water wets the mop (700, 710, 720).

[0067] A water tank (120) can be provided inside the main body (100). The water tank (120) can be detachably connected to the main body (100).

[0068] In an embodiment of the present invention, water stored in a water tank (120) can be used as is (without filtering (water softening) and heating) while being discharged to the outside, and / or can be heated and used in the form of hot water or steam.

[0069] The first supply path (510) is connected to the water tank (120) and forms a path for water to flow. The first supply path (510) may be formed in various forms, such as a pipe, tube, or duct. A portion of the water tank (120) may form the first supply path (510).

[0070] The first supply path (510) may extend from the water tank (120) toward the mop (700, 710, 720). The end of the first supply path (510) (the portion where water is sprayed) may be formed to a point adjacent to the mop (700, 710, 720), or may be formed to a point where it touches the mop (700, 710, 720). The end of the first supply path (510) may be located above the mop (700, 710, 720), and at least a portion of the water sprayed from the end of the first supply path (510) may be absorbed by the mop (700, 710, 720).

[0071] The second supply path (520) is connected to the water tank (120) and forms a path for water to flow. The second supply path (520) may be formed in various forms, such as a pipe, tube, or duct. A portion of the water tank (120) may form the second supply path (520).

[0072] The second supply path (520) may extend from the water tank (120) toward the mop (700, 710, 720). The end of the second supply path (520) (the portion where water is sprayed) may be formed to a point adjacent to the mop (700, 710, 720), or may be formed to a point where it touches the mop (700, 710, 720). The end of the second supply path (520) may be located above the mop (700, 710, 720), and at least a portion of the hot water or steam sprayed from the end of the second supply path (520) may be absorbed by the mop (700, 710, 720).

[0073] The water stored in the water tank (120) is discharged outside the water tank (120) while moving along the first supply path (510), and at this time, the water is used as is (without filtering or heating).

[0074] The water stored in the water tank (120) is discharged outside the water tank (120) while moving along the second supply path (520). At this time, the water is softened while passing through the water treatment filter (300), and can also be transformed into hot water or steam while passing through the heater (400).

[0075] A robot cleaner (1) according to an embodiment of the present invention may include a driving wheel (102). The driving wheel (102) is coupled to the main body (100) so as to rotate around a rotation axis in the left-right direction (parallel to Y). The robot cleaner (1) may be provided with two driving wheels (102), and the driving wheels (102) may be provided on the left and right sides of the main body (100), respectively. By the operation of the driving wheels (102), the robot cleaner (1) can move on the floor surface (B).

[0076] A robot vacuum cleaner (1) according to an embodiment of the present invention may include an auxiliary wheel (103). The auxiliary wheel (103) is coupled to the main body (100) so as to rotate around a horizontal rotation axis.

[0077] FIG. 5 is a drawing showing the internal appearance of a robot vacuum cleaner (1) according to one embodiment of the present invention.

[0078] In the robot vacuum cleaner (1) according to an embodiment of the present invention, the mop (700) can be divided into a first mop (710) and a second mop (720).

[0079] The mop (700, 710, 720) is provided on the lower side of the main body (100) and is configured to come into contact with the floor surface. Accordingly, as the robot cleaner (1) moves, the mop (700, 710, 720) can clean the floor surface, thereby performing mopping.

[0080] A robot cleaner (1) according to an embodiment of the present invention may include a mop plate (730, 740). In the robot cleaner (1) according to an embodiment of the present invention, the mop plates (730, 740) and the mops (710, 720) may be provided as a pair, and at this time, one mop (710, 720) is coupled to one mop plate (730, 740). (A first mop (710) is coupled to (730), and a second mop (720) is coupled to a second mop plate (740).)

[0081] The map plate (730, 740) is coupled to the lower side of the main body (100) and is configured to rotate relative to the main body (100).

[0082] The map plate (730, 740) is formed to have a predetermined area and is formed in the form of a flat plate or a flat frame. The map plate (730, 740) is generally laid horizontally, and accordingly, the horizontal width (or diameter) is formed in a form sufficiently larger than the vertical height. The bottom surface of the map plate (730, 740) coupled to the main body (100) may be parallel to the bottom surface (B), or may be inclined with the bottom surface (B).

[0083] The map plate (730, 740) may be formed in a circular plate shape, and the bottom surface of the map plate (730, 740) may be generally circular.

[0084] In the map plate (730, 740), holes penetrating in the vertical direction can be repeatedly formed along the circumference.

[0085] The map plate (730, 740) can be formed in an overall rotationally symmetrical shape.

[0086] The rotation axis (730a, 730b) of the map plate (730, 740) is formed at the center of the map plate (730, 740). The rotation axis (730a, 730b) of the map plate (730, 740) may be formed along the vertical direction or may be formed generally along the vertical direction.

[0087] In the robot cleaner (1) according to an embodiment of the present invention, a pair of mop plates (730, 740) (a first mop plate (730) and a second mop plate (740)) may be formed identically to each other, or may be formed symmetrically with respect to a center line crossing the front and rear of the robot cleaner (1). If one mop plate (730) is positioned on the left side of the robot cleaner (1), the other mop plate (740) may be positioned on the right side of the robot cleaner (1), and in this case, the pair of mop plates (730, 740) may be symmetrical to each other.

[0088] The mop (710, 720) overlaps with the mop plate (730, 740) and is joined to the lower side of the mop plate (730, 740).

[0089] The mop (700, 710, 720) is formed so that the bottom surface facing the floor has a predetermined area, and the mop (700, 710, 720) is formed in a flat shape. The mop (700, 710, 720) is formed so that the horizontal width (or diameter) is sufficiently larger than the vertical height. The bottom surface of the mop (700, 710, 720) may be parallel to the floor surface (B), or may be inclined with the floor surface (B).

[0090] The bottom of the mop (700, 710, 720) may be generally circular. The mop (700, 710, 720) may be formed in an overall rotationally symmetrical shape. The mop (700, 710, 720) may be formed of various materials that can wipe the bottom surface (B) while coming into contact with the bottom surface (B). The bottom of the mop (700, 710, 720) may be formed of a cloth made of a woven or knitted fabric, a non-woven fabric, and / or a brush having a predetermined area.

[0091] In a robot vacuum cleaner (1) according to an embodiment of the present invention, a mop (710, 720) is detachably attached to the bottom surface of a mop plate (730, 740) and is coupled to the mop plate (730, 740) to rotate together with the mop plate (730, 740).

[0092] The mop (710, 720) can be attached to the mop plate (730, 740) using various devices and methods. In one embodiment, at least a portion of the mop (710, 720) can be connected to the mop plate (730, 740) by being caught, fitted, or the like. In another embodiment, a separate device, such as a clamp, may be provided to connect the mop (710, 720) and the mop plate (730, 740). In another embodiment, one end of a pair of fastening devices that are coupled and separated from each other (specific examples of fastening devices may include a pair of magnets that are attracted to each other, a pair of Velcro that are coupled to each other, or a pair of buttons (a female button and a male button) that are coupled to each other) may be fixed to a mop (710, 720) and the other end may be fixed to a mop plate (730, 740).

[0093] When the mop (710, 720) is coupled to the mop plate (730, 740), the mop (710, 720) and the mop plate (730, 740) can be coupled in an overlapping manner, and the mop (710, 720) can be coupled to the mop plate (730, 740) so that the center of the mop (710, 720) is aligned with the center of the mop plate (730, 740).

[0094] As each mop plate (730, 740) to which the mop (710, 720) is combined rotates around each rotation axis (730a, 730b), mopping of the floor surface (B) is performed by the mop (710, 720).

[0095] A pair of mops (the first mop (710) and the second mop (720)) may be identical to each other. If one mop (710) is positioned on the left side of the robot cleaner (1), the other mop (720) may be positioned on the right side of the robot cleaner (1). In this case, the pair of mops (the first mop (710) and the second mop (720)) may be symmetrical to each other.

[0096] A robot vacuum cleaner (1) according to an embodiment of the present invention comprises a plurality of actuators (111, 112, 113), a suction port (104), a dust bin (105), a fan motor (106), and a battery (107).

[0097] Each actuator (111, 112, 113) may include a motor, a gear, and the like. The first actuator (111) may be configured to transmit rotational power to the first map plate (730) to rotate the first map plate (730). The second actuator (112) may be configured to transmit rotational power to the second map plate (740) to rotate the second map plate (740). The third actuator (113) may be configured to transmit rotational power to the drive wheel (102) to rotate the drive wheel (102).

[0098] By the operation of the fan motor (106), suction force is transmitted to the suction port (104), and thus dust may be drawn into the suction port (104).

[0099] The suction port (104) can be provided in an open form at the bottom of the robot cleaner (1), and dust on the bottom surface (B) moves into the inside of the robot cleaner (1) through the suction port (104), and this dust can be moved to and stored in a dust bin (105) provided inside the robot cleaner (1).

[0100] The battery (107) of the robot cleaner (1) supplies power to each component of the robot cleaner (1), such as the actuator (111, 112, 113), pump (610, 620), and fan motor (106).

[0101] As described above, the robot cleaner (1) according to one embodiment of the present invention includes a water tank (120), a water treatment filter (300), a heater (400), a first supply path (510), and a second supply path (520).

[0102] In addition, a robot vacuum cleaner (1) according to one embodiment of the present invention may include a first pump (610), a second pump (620), and a control unit (101).

[0103] The water tank (120) according to the embodiment of the present invention may be configured so that the interior is partitioned and the path of water moving inside the water tank (120) is divided accordingly (see FIG. 4).

[0104] The water tank (120) may be formed by including a first chamber (121) and a second chamber (122) that are distinct from each other.

[0105] The first supply path (510) is connected to the water tank (120) and forms a path for water to move bypassing the water treatment filter (300) and heater (400). The first supply path (510) may be connected to the first chamber (121).

[0106] The second supply path (520) is connected to the water tank (120) and forms a path for water to move through the water treatment filter (300) and the heater (400). The second supply path (520) can be connected to the second chamber (122), the water treatment filter (300), and the heater (400).

[0107] The first pump (610) is installed in the first supply path (510). The first pump (610) is composed of a water pump and receives power from a battery (107) to move water or fluid along the first supply path (510).

[0108] A second pump (620) is provided in the second supply path (520). The second pump (620) is composed of a water pump and receives power from a battery (107) to move water or fluid along the second supply path (520).

[0109] The control unit (101) is configured to control the operation of the first pump (610) and the second pump (620). The control unit (101) is configured to control the operation of the heater (400). The control unit (101) is configured to control each component provided in the robot cleaner (1).

[0110] When the first pump (610) is operated by the control unit (101), the water inside the water tank (120) moves along the first supply path (510) and can also be sprayed onto the mop (700, 710, 720).

[0111] When the second pump (620) is operated by the control unit (101), the water inside the water tank (120) moves along the second supply path (520), and is heated as the heater (400) is operated by the control unit (101), and the heated water can be sprayed onto the mop (700, 710, 720).

[0112] The heater (400) is provided on one side of the main body (100) and is configured to heat water passing through the heater (400). The heater (400) can be coupled to the inside of the main body (100).

[0113] Water heated by the heater (400) can be transformed into a steam state. At this time, the heater (400) can function as a steam generator.

[0114] In an embodiment of the present invention, the water treatment filter (300) may be provided inside the main body (100). In an embodiment of the present invention, the water treatment filter (300) may be provided inside the water tank (120).

[0115] A water treatment filter (300) according to an embodiment of the present invention is configured to reduce mineral components in water. The water treatment filter (300) is configured to filter hardness substances (such as calcium or magnesium components) from raw water. The water treatment filter (300) according to an embodiment of the present invention may be referred to as a water softener or a water purifier. The water treatment filter (300) can remove calcium or magnesium components from water stored inside a water tank.

[0116] The water treatment filter (300) may be formed of various materials and structures within a range capable of reducing mineral components in water. The water treatment filter (300) may be formed of various materials and structures within a range capable of removing hardness substances or scale-causing substances contained in raw water.

[0117] Hard substances can react at temperatures above or below room temperature to form scale. Scale, such as calcium carbonate (CaCO3), is a substance formed when minerals remaining in water clump together after the water evaporates.

[0118] It is necessary to prevent the formation of scale, as scale generated on the path through which water moves may cause a malfunction or deterioration in the performance of the robot cleaner (1).

[0119] If raw water from which hardness substances have not been removed is heated, the occurrence of scale increases further, so prevention of this is necessary.

[0120] To prevent such problems, a robot vacuum cleaner (1) according to an embodiment of the present invention includes a water treatment filter (300). The water treatment filter (300) may be configured in various ways to prevent scale formation.

[0121] A water treatment filter (300) according to the present invention may comprise one or more of an ion exchange resin, a polyphosphate, and a hardness reduction catalyst. In addition, the water treatment filter (300) may be formed in various ways to prevent scale formation.

[0122] The water treatment filter (300) may include a carbon filter.

[0123] Ion exchange resins can remove limescale, magnesium, iron, and heavy metals from water. Ion exchange resins reduce or suppress hardness components (such as calcium and magnesium) in water, preventing scale formation.

[0124] Polyphosphates release polyphosphoric acid into water, which can bind with calcium and magnesium ions in the water and prevent scale formation.

[0125] The hardness reduction catalyst may include calcium carbonate (CaCO3) or magnesium carbonate (MgCO3). The hardness reduction catalyst includes a silicate-based support, and calcium carbonate (CaCO3) or magnesium carbonate (MgCO3) may be formed on the surface of the support.

[0126] Carbon filters can remove impurities in water by utilizing the adsorption power of activated carbon.

[0127] When the robot vacuum cleaner (1) is equipped with a first mop (710) and a second mop (720), the first supply path (510) may be configured to branch toward the first mop (710) and the second mop (720). In addition, the second supply path (520) may be configured to branch toward the first mop (710) and the second mop (720).

[0128] FIG. 6 is a schematic diagram showing a configuration in which fluid is supplied to a pair of mop parts (70) in a robot cleaner (1) according to one embodiment of the present invention. FIG. 7 is a perspective view showing a mop part (70) in a robot cleaner (1) according to one embodiment of the present invention. FIG. 8 and FIG. 9 are diagrams showing the elevation of a mop part (70) in a robot cleaner (1) according to one embodiment of the present invention. FIG. 10 is an exploded perspective view showing a mop part (70) in a robot cleaner (1) according to one embodiment of the present invention. FIG. 11 is a diagram showing a state in which fluid is supplied to a mop part (70) in a robot cleaner (1) according to one embodiment of the present invention. FIG. 11b is a diagram showing an example of a mop flow path (Fm) of a mop plate (730, 740) in the diagram shown in FIG. 11a.

[0129] A robot vacuum cleaner (1) according to one embodiment of the present invention includes a main body (100), a mop part (70), and a fluid supply part (20).

[0130] The main body (100) is a part that forms the exterior of the robot vacuum cleaner (1), and a mop part (70) and a fluid supply part (20) can be placed on the main body (100).

[0131] The mop part (70) is a part where a mop (700) that can rotate around a longitudinal mop rotation axis (730a, 730b) at the lower side of the main body (100) is installed. In this case, the mop part (70) can be raised and lowered in the longitudinal direction.

[0132] That is, cleaning of the floor surface (B) can be performed as the mop (700) of the mop part (70) rotates. In this case, a fluid such as water stored in a water tank (120) can be supplied to the mop (700) and used for cleaning through the mop (700).

[0133] Additionally, when the robot vacuum cleaner (1) encounters an obstacle or passes through an uneven area during its travel, the mop unit (70) can be raised and lowered in the longitudinal direction so that travel and cleaning can be performed without interruption. In this case, the mop unit (70) can be raised and lowered by rotating around the mop rotation axis (730a, 730b). Alternatively, a separate structure for raising and lowering the mop unit (70) may be applied.

[0134] The fluid supply unit (20) is a unit that supplies fluid to the mop unit (70), and can supply fluid that can be used for cleaning using the mop (700) to the mop (700).

[0135] In this case, as described above, since the mop part (70) rotates and rises as needed, a special structure is required for the flow path that can smoothly and efficiently supply fluid to the mop part (70).

[0136] For example, if the fluid supply unit (20) connected to the mop unit (70) rotates or rises together with the rotation and elevation of the mop unit (70), some components of the fluid supply unit (20) may become twisted or separated, making it difficult to supply fluid. Therefore, it is necessary to form a flow path to prevent this.

[0137] In addition, rather than simply supplying fluid to the rotating and rising mop part (70), it is necessary to form a flow path so that the fluid can be supplied evenly to each part of the mop (700).

[0138] In this regard, in the robot vacuum cleaner (1) according to the present embodiment, the mop part (70) includes a mop plate (730, 740) and a euro connector (760), and may further include a mop shaft (750) and a mop actuator (200).

[0139] The mop plate (730, 740) is a part that is capable of rotating around the mop rotation axis (730a, 730b) with the mop (700) installed thereon, and supplies fluid to the mop (700) through a first flow path (F10) through which fluid can flow. In this case, the first flow path (F10) may be formed on the mop rotation axis (730a, 730b).

[0140] That is, a mop (700) is installed on the mop plate (730, 740), so that the mop (700) can rotate and be raised and lowered together when the mop plate (730, 740) is rotated and raised and lowered.

[0141] In this case, the fluid flowing into the first flow path (F10) of the mop plate (730, 740) can be used for cleaning by wetting the mop (700).

[0142] In particular, since the first flow path (F10) is formed on the mop rotation axis (730a, 730b), the first flow path (F10) arranged at the center of rotation of the mop (700) can be positioned at the center of the mop's (700) plane. In addition, since the first flow path (F10) is formed on the mop rotation axis (730a, 730b), when the mop (700) rotates, the fluid flowing into the first flow path (F10) can be evenly spread out toward the outer side of the mop (700) by centrifugal force.

[0143] The mob shaft (750) is coupled to the mob plate (730, 740) so as to rotate and ascend together with the mob plate (730, 740), and is a part where a second path (F20) connecting the first path (F10) and the connecting path (F30) is formed. In this case, the second path (F20) may be formed on the mob rotation axis (730a, 730b).

[0144] That is, the mab shaft (750) is coupled to the mab plate (730, 740) so that rotation and elevation are restricted, so that when the mab shaft (750) rotates and ascends, the mab plate (730, 740) can rotate and ascend together.

[0145] In this case, the fluid flowing into the second flow path (F20) of the mop shaft (750) can be moved to the mop (700) via the first flow path (F10).

[0146] The mab actuator (200) is a part that rotates the mab shaft (750), and provides rotational force to the mab shaft (750) so that the mab shaft (750) can rotate around the mab rotation axis (730a, 730b).

[0147] The euro connector (760) is installed to limit rotation when the map plate (730, 740) rotates, and is a part that supplies fluid to the map plate (730, 740) through a connecting passage (F30) that connects the first passage (F10) and the fluid supply unit (20). In this case, the euro connector (760) can be raised and lowered together with the map plate (730, 740) and the map shaft (750), and the connecting passage (F30) can be formed on the map rotation axis (730a, 730b).

[0148] That is, the euro connector (760) is coupled to the map plate (730, 740) and the map shaft (750) so that the elevation is restricted, so that the euro connector (760) can be elevated together when the map plate (730, 740) and the map shaft (750) are elevated. However, the euro connector (760) is coupled to the map plate (730, 740) and the map shaft (750) so that the rotation is not restricted, so that the euro connector (760) may not rotate even when the map plate (730, 740) and the map shaft (750) are rotated.

[0149] In this case, the fluid flowing into the connecting passage (F30) of the euro connector (760) can sequentially move to the mop (700) through the second passage (F20) and the first passage (F10).

[0150] In particular, since the flow path connecting member (760) does not rotate even when the mop plate (730, 740) and the mop shaft (750) rotate, the fluid can be smoothly supplied through the connecting flow path (F30) whose rotation is restricted when the mop part (70) rotates. In addition, since the flow path connecting member (760) is raised and lowered together when the mop plate (730, 740) and the mop shaft (750) are raised and lowered, the fluid can be smoothly supplied through the connecting flow path (F30) that is raised and lowered together when the mop part (70) is raised and lowered.

[0151] In this way, in the robot cleaner (1) according to one embodiment of the present invention, since the fluid is supplied to the mop (700) through the flow path connecting body (760) whose rotation is restricted when the mop plate (730, 740) rotates in the mop part (70), the fluid can be smoothly supplied to the mop (700) without problems such as the flow path becoming tangled or separated even when the mop part (70) rotates and is raised and lowered.

[0152] In addition, in the robot cleaner (1) according to one embodiment of the present invention, since the first flow path (F10) through which fluid flows into the mop plate (730, 740) on which the mop (700) is installed is formed on the mop rotation axis (730a, 730b), the fluid supplied to the mop (700) is uniformly distributed to each part of the mop (700), so that the fluid supply to the mop (700) can be efficiently performed.

[0153] In this case, the mop plate (730, 740) can distribute the fluid supplied to the mop (700) through the mop channel (Fm) radially connected to the first euro (F10).

[0154] That is, as illustrated in Fig. 11b, a map flow path (Fm) may be formed radially on a plane in the map plate (730, 740). One end of this map flow path (Fm) may be connected to the first flow path (F10) and the other end may extend toward the periphery of the map plate (730, 740).

[0155] Accordingly, the fluid introduced into the first flow path (F10) can be moved and distributed around the map plate (730, 740) along the map flow path (Fm). In particular, when the map flow path (Fm) is composed of a plurality of rotationally symmetrical map plates, the fluid can be relatively evenly distributed over the entire plane of the map plate (730, 740).

[0156] In a robot vacuum cleaner (1) according to one embodiment of the present invention, a mop plate (730, 740) can be detachably coupled to a mop shaft (750).

[0157] That is, the mop plate (730, 740) and the mop (700) installed thereon can be separated from the robot cleaner (1). Accordingly, the user can use the robot cleaner (1) by replacing the mop (700) and mop plate (730, 740) of various structures and materials depending on the object or method of cleaning.

[0158] In this case, the flow path for supplying fluid to the mop (700) is separated into the first flow path (F10) of the mop plate (730, 740) and the second flow path (F20) of the mop shaft (750), so that the mop plate (730, 740) can be detached from the mop shaft (750) without any problem.

[0159] In particular, as illustrated in FIG. 11a, the portion where the first flow path (F10) of the map plate (730, 740) is formed protrudes upward, and the protruding portion is fitted into the sunken portion at the bottom of the map shaft (750), so that the first flow path (F10) and the second flow path (F20) can be connected when the map plate (730, 740) and the map shaft (750) are combined.

[0160] In a robot vacuum cleaner (1) according to one embodiment of the present invention, the mop actuator (200) may include a gear connecting body (270) that rotates around a mop rotation axis (730a, 730b) and has a guide protrusion (271) formed on the outer surface.

[0161] In this case, the map shaft (750) has a guide projection (271) inserted into a screw thread (751) formed on the inner surface and can be combined to mesh with the outer surface of the gear connecting body (270).

[0162] That is, the outer surface of the gear connecting body (270) can be brought into contact with and combined with the inner surface of the mab shaft (750), and at this time, the guide protrusion (271) of the gear connecting body (270) can be inserted into the screw thread (751) of the mab shaft (750).

[0163] Accordingly, when the gear connecting body (270) rotates, the guide projection (271) of the gear connecting body (270) can move along the screw thread (751) of the mab shaft (750). In particular, when the gear connecting body (270) rotates while the mab shaft (750) is not rotating, the guide projection (271) can move upward or downward along the screw thread (751). In this case, if the longitudinal position of the gear connecting body (270) is fixed, a mechanism can be implemented in which the mab shaft (750) moves upward or downward according to the rotation of the gear connecting body (270).

[0164] Accordingly, depending on the formation direction of the screw thread (751), when the gear connecting body (270) is rotated in the first rotation direction (RD1), the mab shaft (750) can be raised, and when the gear connecting body (270) is rotated in the second rotation direction (RD2), the mab shaft (750) can be lowered.

[0165] Alternatively, if the screw thread (751) is formed in the opposite direction, the mab shaft (750) can be lowered when the gear connecting body (270) is rotated in the first rotational direction (RD1), and the mab shaft (750) can be raised when the gear connecting body (270) is rotated in the second rotational direction (RD2).

[0166] Here, the first rotation direction (RD1) and the second rotation direction (RD2) are opposite to each other. When the first rotation direction (RD1) is clockwise, the second rotation direction (RD2) is counterclockwise. When the first rotation direction (RD1) is counterclockwise, the second rotation direction (RD2) is clockwise.

[0167] In this way, the robot cleaner (1) according to one embodiment of the present invention can easily raise and lower the mop shaft (750) by rotating the gear connection body (270), since the guide projection (271) formed on the outer surface of the gear connection body (270) is coupled to engage with the screw thread (751) formed on the inner surface of the mop shaft (750).

[0168] Meanwhile, when the guide projection (271) moving upward or downward along the screw thread (751) reaches the end of the screw thread (751), the guide projection (271) is caught on the stopper at the end of the screw thread (751), so that the mab shaft (750) can rotate together when the gear connecting body (270) rotates thereafter.

[0169] In a robot vacuum cleaner (1) according to one embodiment of the present invention, the mop actuator (200) may further include a rotary gear (281) and a driving motor (290).

[0170] The rotary gear (281) is a part that is coupled to the gear connecting body (270) so that it rotates together with the gear connecting body (270), and can transmit the rotational power of the driving motor (290) to the gear connecting body (270). In this case, the gear connecting body (270) is integrally formed at the lower part of the rotary gear (281), so that the gear connecting body (270) can rotate together when the rotary gear (281) rotates.

[0171] The drive motor (290) is a part that provides rotational force to the rotating gear (281) and can generate rotational force through electric energy. In this case, the drive motor (290) can be coupled with a battery (107) to receive electric energy, and can be coupled with a control unit (101) to control the rotational direction and rotational intensity, etc.

[0172] In this way, the robot cleaner (1) according to one embodiment of the present invention provides rotational force to the rotation gear (281) coupled to the gear connecting body (270) through the driving motor (290), so that the elevation of the mop shaft (750) can be automatically and precisely controlled.

[0173] In a robot vacuum cleaner (1) according to one embodiment of the present invention, the mop actuator (200) may further include a worm gear (282) and a worm wheel (283).

[0174] The worm gear (282) is a part that is coupled to the drive shaft of the drive motor (290), and the worm wheel (283) is a part that is partially engaged with the worm gear (282) and the other part is partially engaged with the rotary gear (281).

[0175] Accordingly, even if the rotational axis of the worm wheel (283) and the drive axis of the drive motor (290) are arranged to be orthogonal to each other, the rotational power of the drive motor (290) can be smoothly transmitted to the rotational gear (281) via the worm wheel (283) through the worm gear (282).

[0176] Accordingly, it may be possible to place the drive motor (290) face down, and accordingly, the height of the space occupied by the drive motor (290) can be minimized, and the arrangement of the main components can be modified in various ways as needed.

[0177] In this way, in the robot vacuum cleaner (1) according to one embodiment of the present invention, since the worm gear (282) and the worm wheel (283) are arranged between the driving motor (290) and the rotary gear (281), the arrangement of the driving motor (290) with respect to the rotary gear (281) can be made more freely.

[0178] Fig. 12 is a cross-sectional view showing a through hole (771) of an actuator case (770) in a robot cleaner (1) according to one embodiment of the present invention. Fig. 13 is a drawing showing a state in which a flow connector (760) is installed in a through hole (771) of an actuator case (770) in a robot cleaner (1) according to one embodiment of the present invention.

[0179] In a robot vacuum cleaner (1) according to one embodiment of the present invention, the mop part (70) may further include an actuator case (770) that covers and supports the mop actuator (200) and has a through hole (771) formed along the longitudinal direction at a portion where the mop rotation shaft (730a, 730b) is located.

[0180] That is, the main components of the map actuator (200) are arranged inside the actuator case (770), and this actuator case (770) is coupled to the main body (100) to support the main components of the map actuator (200).

[0181] In particular, a longitudinal through hole (771) is formed in the portion of the actuator case (770) where the shaft rotation (730a, 730b) is located, so that a fluid path arranged at the lower portion of the actuator case (770) can be connected to the fluid supply unit (20) through the through hole (771).

[0182] In this way, in the robot cleaner (1) according to one embodiment of the present invention, since a through hole (771) is formed in the part where the mop rotation shaft (730a, 730b) is located in the actuator case (770), connection between the fluid supply unit (20) and the connection path (F30) can be easily achieved.

[0183] In a robot vacuum cleaner (1) according to one embodiment of the present invention, a euro connector (760) is installed in a through hole (771) and can be raised and lowered with limited rotation.

[0184] That is, a flow connector (760) is installed in a through hole (771) of an actuator case (770), and when the mop part (70) is raised or lowered, the flow connector (760) can move longitudinally along the through hole (771). In this case, the flow connector (760) can only be raised or lowered and its rotation is restricted by frictional force or a bonding structure at a portion in contact with the through hole (771).

[0185] In this way, in the robot cleaner (1) according to one embodiment of the present invention, since the guiding member (760) is raised and lowered along the through hole (771) with rotation restricted, the guiding member (760) can be raised and lowered stably when the mop part (70) is raised and lowered.

[0186] In a robot vacuum cleaner (1) according to one embodiment of the present invention, a hook-up member (760) may be formed with a hook-up projection (761) that protrudes outward. In this case, a through hole (771) may be formed with a hook-up groove (772) that is sunken in so that the hook-up projection (761) is inserted.

[0187] That is, as illustrated in FIGS. 12 and 13, the euro connector (760) may have a catch (761) formed to protrude further outward than the inner diameter of the through hole (771). In addition, a catch groove (772) may be formed to be recessed on the inner circumferential surface of the through hole (771) to a degree greater than the protrusion of the catch (761). In this case, the catch groove (772) may be formed continuously along the longitudinal direction.

[0188] Accordingly, when the euro connector (760) is installed in the through hole (771), the catch (761) is inserted into the catch groove (772), so that the catch (761) can move longitudinally along the catch groove (772), but on a plane, the catch (761) can be caught in the catch groove (772), so that the rotation of the euro connector (760) can be restricted.

[0189] Meanwhile, the number and arrangement of the catches (761) and catch grooves (772) are not limited to the structure shown in the drawing and may be modified in various ways as needed.

[0190] In this way, in the robot cleaner (1) according to one embodiment of the present invention, since the hooking projection (761) protruding outwardly of the guiding member (760) is inserted into the hooking groove (772) of the through hole (771), the rotation of the guiding member (760) can be stably restricted when the mop part (70) rotates.

[0191] In a robot vacuum cleaner (1) according to one embodiment of the present invention, the mop part (70) may further include a rotational resistance body (780) that is supported by an actuator case (770) and comes into contact with the outer surface of the mop shaft (750) to partially prevent rotation of the mop shaft (750).

[0192] As described above, in order for the mop part (70) to be raised or lowered as needed, it may be necessary to a certain extent for the gear linkage (270) to rotate but the mop shaft (750) to not rotate.

[0193] And, in order to clean through the mop (700) after lowering the mop part (70), the mop shaft (750) needs to rotate together with the rotation of the gear connecting body (270).

[0194] Therefore, depending on the condition of the mop part (70), it is necessary to install a rotation resistance body (780) to prevent rotation of the mop shaft (750) to a certain extent.

[0195] In this case, the degree of contact or friction between the rotational resistance body (780) and the outer surface of the mop shaft (750) can be controlled by the control unit (101). Alternatively, the rotational resistance body (780) can be brought into contact with the outer surface of the mop shaft (750) so as to maintain a predetermined frictional force, so that the mop part (70) can be raised and lowered while the gear connection body (270) rotates but the mop shaft (750) does not rotate, and cleaning can be performed using the mop (700) while the guide protrusion (271) reaches the end of the screw thread (751) and the gear connection body (270) and the mop shaft (750) rotate together.

[0196] In this way, the robot cleaner (1) according to one embodiment of the present invention can smoothly convert the rotational force of the gear connecting body (270) into the lifting force of the mop shaft (750) by having the rotational resistance body (780) come into contact with the outer surface of the mop shaft (750) to partially block the rotation of the mop shaft (750).

[0197] In a robot vacuum cleaner (1) according to one embodiment of the present invention, a bearing (762) may be interposed in a portion of the euro connection body (760) that is connected to the second euro (F20).

[0198] As described above, since the euro connector (760) needs to be able to only ascend and descend while being restricted from rotating, it is necessary to minimize the rotational force of the mab shaft (750) transmitted to the euro connector (760).

[0199] In particular, since the second flow path (F20) of the mab shaft (750) is a portion that directly contacts the flow path connecting body (760), it may be desirable to prevent rotational force from being transmitted to the flow path connecting body (760) by interposing a bearing (762) between the second flow path (F20) portion and the flow path connecting body (760).

[0200] In this way, the robot cleaner (1) according to one embodiment of the present invention can prevent the rotational force resulting from the rotation of the mop shaft (750) from being transmitted to the flow path connecting body (760) since a bearing (762) is interposed in the portion of the flow path connecting body (760) connected to the second flow path (F20).

[0201] In a robot vacuum cleaner (1) according to one embodiment of the present invention, the lower part of the euro connector (760) can be connected to cover the upper part of the second euro (F20).

[0202] If the connecting parts of each flow path are separated during the rotation and elevation of the mop (70), a functional problem may occur, so it is necessary to stably connect the connecting parts of each flow path.

[0203] In particular, the connection between the second flow path (F20) that rotates and the non-rotating connecting flow path (F30) can be said to have a high risk of separation depending on the relative displacement.

[0204] Accordingly, it may be desirable to minimize separation of the connection part even when the mop part (70) rotates and is raised by having the lower part of the connection body (760) cover the upper part of the second flow path (F20) corresponding to the connection part between the second flow path (F20) and the connection flow path (F30).

[0205] In this way, in the robot cleaner (1) according to one embodiment of the present invention, since the lower part of the flow path connecting body (760) covers the upper part of the second flow path (F20), the connecting flow path (F30) can be more stably connected to the second flow path (F20).

[0206] In a robot vacuum cleaner (1) according to one embodiment of the present invention, the fluid supply unit (20) may include a water tank (120) provided in the main body (100) and through which stored water is supplied to the mop unit (70).

[0207] As described above, the robot vacuum cleaner (1) can clean by supplying water to the mop (700). In this case, since the water-soaked mop (700) evaporates and dries as the cleaning progresses, it is necessary to continuously supply water to the mop (700) during cleaning.

[0208] In this case, if water is supplied through a supply pipe external to the robot cleaner (1), it may be inefficient as the robot cleaner (1) must always be connected to the external supply pipe while cleaning. In addition, if the robot cleaner (1) frequently moves to a specific location to wet the mop (700), smooth cleaning may not be achieved.

[0209] Therefore, it may be desirable to install a water tank (120) capable of storing a certain amount of water in the fluid supply unit (20) so that the water stored in the water tank (120) is supplied to the mop (700) during cleaning.

[0210] In this way, the robot cleaner (1) according to one embodiment of the present invention can perform smooth cleaning without an external water supply for a certain period of time, since the water stored in the water tank (120) is supplied to the mop part (70) and used for cleaning.

[0211] In a robot vacuum cleaner (1) according to one embodiment of the present invention, the fluid supply unit (20) may further include a heater (400) provided in the main body (100) and configured to heat water in a water tank (120).

[0212] That is, when cleaning using a mop (700), instead of using only room temperature water, a high temperature fluid (e.g., hot water or steam) heated by a heater (400) can be supplied to the mop (700) and used for cleaning. In this case, the heater (400) can function as a steam generator that generates steam.

[0213] When cleaning using hot water on a mop (700), foreign substances that are difficult to remove at room temperature can be relatively easily removed. In addition, when cleaning using steam on a mop (700), the cleaning surface may be sterilized by the steam.

[0214] In this way, the robot cleaner (1) according to one embodiment of the present invention can further improve cleaning performance by using high-temperature fluid, since water is heated in the heater (400) and then supplied to the mop unit (70) for use in cleaning.

[0215] In a robot cleaner (1) according to one embodiment of the present invention, the fluid flowing into the first flow path (F10), the second flow path (F20), and the connecting flow path (F30) may include at least one of water and steam.

[0216] As mentioned above, when using not only room temperature water but also heated water or steam, cleaning can be performed in a more complex manner for various environments.

[0217] In this case, depending on the environment that requires cleaning, both water and steam may be configured to flow into the first flow path (F10), the second flow path (F20), and the connecting flow path (F30) described above, or only one of the water and steam may flow into the first flow path (F10), the second flow path (F20), and the connecting flow path (F30), and the other may be configured to be supplied to the mop (700) through a separate path.

[0218] In this way, the robot cleaner (1) according to one embodiment of the present invention can perform more diverse and appropriate cleaning depending on the state of the cleaning area, since the fluid supplied to the mop part (70) for cleaning includes at least one of water and steam.

[0219] In a robot vacuum cleaner (1) according to one embodiment of the present invention, the mop parts (70) may be arranged in pairs on the lower side of the main body (100). In this case, the fluid supply part (20) may supply fluid to each mop part (70). That is, the fluid supplied from the fluid supply part (20) for cleaning through the mop (700) may be branched and supplied to each mop part (70).

[0220] In this way, the robot cleaner (1) according to one embodiment of the present invention is equipped with a pair of mop parts (70), and fluid is supplied to each mop part (70), so that cleaning can be performed uniformly through each mop (700).

[0221] In a robot vacuum cleaner (1) according to one embodiment of the present invention, a water tank (120) and a heater (400) can be connected together to each mop part (70).

[0222] As described above, when the fluid supplied from the fluid supply unit (20) is branched and supplied to each mop unit (70), a water tank (120) and a heater (400) can be placed for each mop unit (70).

[0223] However, in such cases, the overall structure of the robot vacuum cleaner (1) may become complex and miniaturization may become difficult.

[0224] Therefore, it may be desirable to place only one water tank (120) and one heater (400), and to connect one water tank (120) and one heater (400) to each of a pair of mop parts (70).

[0225] In this way, in the robot cleaner (1) according to one embodiment of the present invention, since one water tank (120) and one heater (400) are connected together to each of a pair of mop parts (70), the structure for supplying fluid to the mop (700) can be relatively simplified.

[0226]

[0227] While specific embodiments of the present invention have been described and illustrated above, it will be apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, such modifications or variations should not be understood individually from the technical spirit or perspective of the present invention, and such modified embodiments should fall within the scope of the claims of the present invention.

[0228] According to at least one of the embodiments of the present invention, since the fluid is supplied to the mop through a flow connection body whose rotation is restricted when the mop plate rotates in the mop part, the fluid can be smoothly supplied to the mop without problems such as the flow path becoming tangled or separated even when the mop part rotates and is raised and lowered.

[0229] In addition, according to at least one of the embodiments of the present invention, since the first flow path through which the fluid flows into the mop plate on which the mop is installed is formed on the mop rotation axis, the fluid supplied to the mop is uniformly distributed to each part of the mop, so that the fluid supply to the mop can be efficiently performed.

[0230] In addition, according to at least one of the embodiments of the present invention, since the guide projection formed on the outer surface of the gear connecting body is engaged with the screw thread formed on the inner surface of the mab shaft, the mab shaft can be easily raised and lowered through the rotation of the gear connecting body.

[0231] In addition, according to at least one of the embodiments of the present invention, since a rotational force is provided to a rotating gear coupled to a gear linkage through a driving motor, the elevation of the mab shaft can be automatically and precisely controlled.

[0232] In addition, according to at least one of the embodiments of the present invention, since a worm gear and a worm wheel are arranged between the driving motor and the rotating gear, the arrangement of the driving motor with respect to the rotating gear can be made more freely.

[0233] In addition, according to at least one of the embodiments of the present invention, since a through hole is formed in a portion of the actuator case where the shaft of rotation is located, connection between the fluid supply unit and the connecting passage can be easily achieved.

[0234] In addition, according to at least one of the embodiments of the present invention, since the euro connector is raised and lowered along the through hole with limited rotation, the euro connector can be raised and lowered stably when the mop part is raised and lowered.

[0235] In addition, according to at least one of the embodiments of the present invention, since a hook protruding outwardly from the euro connector is inserted into a hook groove of a through hole, the rotation of the euro connector can be stably restricted when the mop part rotates.

[0236] In addition, according to at least one of the embodiments of the present invention, the rotational resistance body comes into contact with the outer surface of the mab shaft to partially prevent the rotation of the mab shaft, so that the rotational force of the gear connecting body can be smoothly converted into the lifting force of the mab shaft.

[0237] In addition, according to at least one of the embodiments of the present invention, since a bearing is interposed in a portion of the euro connecting body connected to the second euro, it is possible to prevent rotational force according to the rotation of the mab shaft from being transmitted to the euro connecting body.

[0238] In addition, according to at least one of the embodiments of the present invention, since the lower part of the euro connecting body covers the upper part of the second euro, the connecting euro can be more stably connected to the second euro.

[0239] In addition, according to at least one of the embodiments of the present invention, since the water stored in the water tank is supplied to the mop and used for cleaning, smooth cleaning can be performed without an external water supply for a certain period of time.

[0240] In addition, according to at least one of the embodiments of the present invention, since water is heated in a heater and then supplied to a mop unit to be used for cleaning, cleaning performance can be further improved by using high-temperature fluid.

[0241] In addition, according to at least one of the embodiments of the present invention, since the fluid supplied to the mop for cleaning includes at least one of water and steam, more diverse and appropriate cleaning can be performed depending on the condition of the cleaning area.

[0242] In addition, according to at least one of the embodiments of the present invention, the mop parts are provided in pairs, and fluid is supplied to each mop part, so that cleaning through each mop can be performed uniformly.

[0243] In addition, according to at least one of the embodiments of the present invention, since one water tank and one heater are connected together to each of a pair of mop parts, the structure for supplying fluid to the mop can be relatively simplified.

Claims

1. Main body; A mop part in which a mop that can rotate around a longitudinal rotation axis is installed at the lower side of the main body; and Includes a fluid supply unit that supplies fluid to the above mop unit; The above mop part, A mop plate that is installed on the mop and can rotate around the mop rotation axis, and supplies fluid to the mop through a first flow path through which fluid can flow in; and A robot cleaner, comprising a flow path connecting body that is installed to limit rotation when the above-mentioned map plate rotates and supplies fluid to the map plate through a connecting flow path connecting the first flow path and the fluid supply unit.

2. In paragraph 1, A robot vacuum cleaner in which the first euro is formed on the rotation axis of the mop.

3. In paragraph 2, The above mop part is made to be able to rise and fall in the longitudinal direction, A robot vacuum cleaner in which the above-mentioned Euro connector is raised and lowered together with the raising and lowering of the above-mentioned map plate.

4. In paragraph 3, The above mop part, A mab shaft coupled to the mab plate so as to rotate and ascend together with the mab plate, and having a second passage connecting the first passage and the connecting passage formed therein; and A robot vacuum cleaner further comprising a mop actuator that rotates the mop shaft.

5. In paragraph 4, A robot vacuum cleaner in which the second euro and the connecting euro are formed on the rotation axis of the mop.

6. In paragraph 4, A robot vacuum cleaner in which the above mop plate is detachably connected to the above mop shaft.

7. In paragraph 4, The above actuator is, It includes a gear connecting body that rotates around the above-mentioned rotation axis and has a guide protrusion formed on the outer surface, The above-mentioned mop shaft is a robot vacuum cleaner in which the guide projection is inserted into a screw thread formed on the inner surface and is coupled to mesh with the outer surface of the gear connecting body.

8. In paragraph 7, The above actuator is, A rotating gear coupled to the gear connecting body so as to rotate together with the gear connecting body; and A robot vacuum cleaner further comprising a driving motor that provides rotational force to the above-mentioned rotation gear.

9. In paragraph 8, The above actuator is, A worm gear coupled to the drive shaft of the above drive motor and A robot vacuum cleaner further comprising a worm wheel, a portion of which is engaged with the worm gear and another portion of which is engaged with the rotating gear.

10. In paragraph 4, The above mop part, A robot vacuum cleaner further comprising an actuator case that covers and supports the above-mentioned mop actuator and has a through hole formed along the longitudinal direction at a portion where the mop rotation axis is located.

11. In paragraph 10, A robot vacuum cleaner in which the above-mentioned Euro connector is installed in the above-mentioned through hole and is raised and lowered with limited rotation.

12. In paragraph 11, The above Euro connector is formed with a stud protruding outward, A robot vacuum cleaner in which the above through hole is formed with a recessed groove into which the above-mentioned hook is inserted.

13. In paragraph 10, The above mop part, A robot vacuum cleaner further comprising a rotational resistance body supported by the actuator case and in contact with the outer surface of the mop shaft to partially prevent rotation of the mop shaft.

14. In paragraph 4, A robot vacuum cleaner in which a bearing is interposed in a portion of the above-mentioned Euro connector connected to the second Euro.

15. In paragraph 14, A robot vacuum cleaner in which the above-mentioned Euro connector is connected such that the lower part covers the upper part of the second Euro.

16. In paragraph 4, The above fluid supply unit, A robot vacuum cleaner including a water tank provided and stored in the main body to supply water to the mop unit.

17. In paragraph 16, The above fluid supply unit, A robot vacuum cleaner further comprising a heater provided in the main body and configured to heat water in the water tank.

18. In paragraph 17, A robot cleaner, wherein the fluid flowing into the first flow path, the second flow path, and the connecting flow path includes at least one of water and steam.

19. In paragraph 17, The above mop parts are arranged in pairs on the lower side of the main body, A robot vacuum cleaner in which the fluid supply unit supplies fluid to each of the mop units.

20. In paragraph 19, A robot vacuum cleaner in which the water tank and the heater are connected together to each of the mop parts.

21. In paragraph 1, A robot vacuum cleaner in which the above mop plate disperses the fluid supplied to the mop through a mop channel radially connected to the first euro.

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