suction nozzle for cleaners

Abstract

The present invention provides a suction nozzle for a cleaner. The suction nozzle of the cleaner according to the invention comprises: a suction nozzle body including a suction flow channel therein for drawing air in; a plurality of rotatable cleaning portions rotatably connected to the suction nozzle body; a plurality of drive devices for driving the plurality of rotatable cleaning portions; a water tank disposed on the suction nozzle body and configured to supply water to each of the rotatable cleaning portions; and a water supply path for supplying water from the water tank to each of the rotatable cleaning portions.

Description

[0001] This invention is a divisional application of the invention patent application with application number 201980026344.0 (international application number: PCT / KR2019 / 004933, application date: April 24, 2019, invention title: cleaner nozzle). Technical Field

[0002] This instruction manual relates to a suction nozzle for a cleaner. Background Technology

[0003] A cleaner is a device that sucks up or wipes away dust or foreign objects from an area that needs to be cleaned.

[0004] These cleaners can be divided into manual cleaners that clean while the user moves the cleaner directly, and automatic cleaners that clean while moving on their own.

[0005] Manual cleaners can be categorized into canister cleaners, upright cleaners, handheld cleaners, and stick cleaners based on their type.

[0006] These cleaners use nozzles to clean floors. Generally, the nozzles are used to suck up air and dust. Depending on the type of nozzle, it can be attached to a mop for mopping the floor.

[0007] Korean Patent Registration 10-0405244 discloses a suction port assembly for a vacuum cleaner.

[0008] The suction port assembly of prior art 1 includes a suction port body having a suction port provided thereon.

[0009] The suction port body includes a first suction path at the front, a second suction path at the rear, and a guide path formed between the first suction path and the second suction path.

[0010] A mop is rotatably mounted on the lower end of the suction port body, and a rotary drive unit for driving the mop is provided in the suction port body.

[0011] The rotary drive unit includes a rotary motor and gears for transmitting power from the rotary motor to multiple rotating bodies attached to the mop.

[0012] Meanwhile, according to the prior art 1, since a pair of rotating bodies arranged on both sides of the rotary drive unit are rotated by a single rotary motor, if the rotary motor malfunctions or fails, there is a problem that neither of the pair of rotating bodies can rotate.

[0013] In addition, in order to use a rotary motor to rotate a pair of rotating bodies, since the rotary motor is located in the center of the suction port body, a suction path that prevents interference with the rotary motor needs to be designed. Therefore, there are disadvantages such as the increased length of the suction path and the complex structure of the suction path.

[0014] In addition, since the prior art 1 does not have a structure for supplying water to the mop, there is a disadvantage that if the user wants to use a wet mop for cleaning, the user must directly supply water to the mop.

[0015] Furthermore, in the case of prior art 1, since the rotary motor is located in the center of the suction port body, it is difficult to form a suction path in the center of the suction port body, and if a suction path is formed in the center of the suction port body, there is a disadvantage that the height of the suction port body is increased.

[0016] Increasing the height of the suction nozzle body has the disadvantage that it is difficult for the suction nozzle body to enter under furniture or narrow spaces, thus reducing the area that can be cleaned. In addition, the overall size of the suction nozzle body is larger, which causes inconvenience to the user during operation.

[0017] For example, if a user intends to straighten the suction port body but the suction port body moves eccentrically, there is a disadvantage that the weight of the suction port body will further increase the eccentricity, making it difficult for the user to overcome the eccentricity and move the suction port body back to its original straight path.

[0018] On the other hand, Korean Patent Publication No. 10-2017-0028765, which is prior art 2, discloses a cleaner.

[0019] The cleaner disclosed in prior art 2 includes: a cleaner body, on which a mop is rotatably mounted; a water bottle disposed on the cleaner body or on a handle connected to the cleaner body; a spray nozzle configured to spray water onto the front end of the cleaner body; and a water supply unit that supplies water from a water tank to the spray nozzle.

[0020] In the case of prior art 2, because the spray nozzle sprays water forward from the front surface of the cleaner body, the sprayed water may wet other nearby structures instead of the mop.

[0021] The water nozzle is located in the center of the cleaner body, while the mop is arranged horizontally, which means that the mop cannot fully absorb the water sprayed in front of the cleaner body.

[0022] Furthermore, in the case of existing technology 2, since there is no airflow path for suction, there is a disadvantage that it can only wipe the floor, and the user must manually clean the foreign objects on the floor again. Summary of the Invention

[0023] Technical issues

[0024] This embodiment provides a suction nozzle for a cleaner that can suck up foreign objects on the floor while making the overall size of the nozzle smaller and thinner, and clean the floor by rotating the mop and supplying water to the mop.

[0025] This embodiment provides a suction nozzle for a cleaner, wherein water in a water tank can be stably supplied to a rotating cleaning unit during the cleaning process.

[0026] This embodiment provides a nozzle for a cleaner, wherein even when a structure is applied that allows the floor to be mopped, the length of the airflow path used for airflow is prevented from increasing, thereby reducing airflow loss.

[0027] This embodiment provides a suction nozzle for a cleaner, wherein the volume of water stored in a water tank can be increased while minimizing the increase in height in the suction nozzle.

[0028] This embodiment provides a suction nozzle for a cleaner, which can increase the cleaning area of ​​the mop even with slight movement during cleaning.

[0029] This embodiment provides a suction nozzle for a cleaner that evenly distributes the weight of multiple drive units to the left and right sides.

[0030] This embodiment provides a suction nozzle for a cleaner that, when the water tank is in place, prevents the center of gravity of the suction nozzle from tilting to one side of the drive unit.

[0031] This embodiment provides a suction nozzle for a cleaner, wherein water discharged via a water supply path is prevented from being drawn into the nozzle body.

[0032] This embodiment provides a suction nozzle for a cleaner, wherein the length of the water supply path used to supply water from a water tank to a rotating cleaning unit is minimized.

[0033] This embodiment provides a suction nozzle for a cleaner, wherein leakage of water discharged from the water tank is minimized.

[0034] This embodiment provides a suction nozzle for a cleaner, wherein the same amount of water can be supplied to each rotating cleaning unit.

[0035] Technical solution

[0036] According to one aspect of this embodiment, the nozzle of a cleaner includes: a nozzle body having a suction flow path for drawing air; a plurality of rotating cleaning units rotatably connected to the nozzle body; a plurality of driving devices for driving the plurality of rotating cleaning units; a water tank disposed on the nozzle body and supplying water to each of the plurality of rotating cleaning units; and a water supply flow path for supplying water from the water tank to each of the plurality of rotating cleaning units.

[0037] The plurality of rotating cleaning units may include a first rotating cleaning unit and a second rotating cleaning unit, the first rotating cleaning unit and the second rotating cleaning unit being arranged on the underside of the nozzle body and spaced apart from each other in the lateral direction, and each of the first rotating cleaning unit and the second rotating cleaning unit including a rotating plate capable of attaching a mop.

[0038] The plurality of driving devices may include: a first driving device that drives the first rotary cleaning unit, the first driving device being disposed on one side of the flow path extending in the front-back direction of the suction flow path; and a second driving device configured to drive the second rotary cleaning unit, the second driving device being disposed on the other side of the flow path extending in the front-back direction of the suction flow path.

[0039] The water tank can be detachably mounted on the upper side of the nozzle body.

[0040] The water supply path can be located in the nozzle body.

[0041] The suction flow path may include: a first flow path extending in the lateral direction at the front end portion of the nozzle body; and a second flow path extending in the front-rear direction at the central portion of the first flow path.

[0042] The first driving device and the second driving device may be located behind the first flow path.

[0043] The second flow path can be located between the first driving device and the second driving device.

[0044] The first rotary cleaning unit and the second rotary cleaning unit can be arranged behind the first flow path.

[0045] The central axis, which divides the front and rear length of the nozzle body into two equal parts, can be positioned closer to the rotation center of each of the rotating cleaning units than the first flow path.

[0046] The first driving device may include a first driving motor, and the second driving device may include a second driving motor.

[0047] The drive motors can be arranged such that the axis of the first drive motor and the axis of the second drive motor extend in the front-rear direction.

[0048] An imaginary line connecting the axes of the first and second drive motors can pass through the second flow path.

[0049] The first rotating cleaning unit may include a first rotating plate having a first rotation center and capable of attaching a mop, and the second rotating cleaning unit may include a second rotating plate having a second rotation center and capable of attaching a mop.

[0050] The axis of the first drive motor and the axis of the second drive motor can be located between the first rotation center and the second rotation center.

[0051] Each drive motor can be positioned between the first rotation center and the second rotation center.

[0052] Each drive unit may further include a drive gear that is connected to and rotates by means of the shaft of each drive motor.

[0053] Each drive gear can be located between the first flow path and each drive motor.

[0054] Each drive motor can be arranged to overlap with an imaginary line connecting the first and second rotation centers in a vertical direction.

[0055] The nozzle body may include a nozzle housing, and each of the driving devices is housed in the nozzle housing.

[0056] The nozzle housing may include a drive unit cover that covers each of the drive units and protrudes upward. With the water tank mounted on the nozzle body, a portion of the water tank may surround the periphery of the drive unit cover.

[0057] With the water tank mounted on the nozzle body, at least a portion of the bottom of the water tank can be positioned below the axis of each drive motor.

[0058] The nozzle housing may include: a nozzle base on which each drive unit is mounted; and a nozzle cover connected to the nozzle base to cover each drive unit and include each drive unit cover.

[0059] The water tank may include a recessed receiving space for receiving the covers of each drive unit.

[0060] The nozzle cap may further include a flow path cap that covers the second flow path. The water tank may include a slot for positioning the flow path cap.

[0061] A portion of the water tank may be located on either side of the flow path cover.

[0062] The water tank may include: a first chamber located above the first drive motor; a second chamber located above the second drive motor; and a connecting chamber connecting the first chamber and the second chamber between the first flow path and each of the drive motors.

[0063] The mop is attached to the underside of the rotating plate, and the rotating plate may be provided with multiple water holes through which water discharged from the water supply path passes.

[0064] The plurality of water passages can be spaced apart from each other in the circumferential direction relative to the rotation center of the rotating plate.

[0065] A nozzle is provided at the end of the water supply path, and the nozzle tip can be arranged to face the rotating plate.

[0066] The nozzle tip can be exposed outside the nozzle housing via the lower side of the nozzle housing.

[0067] The nozzle housing may include a groove having a recessed form to position a nozzle end exposed to the outside of the nozzle housing, and a nozzle hole may be formed in the groove for the nozzle end to pass through.

[0068] The water tank may include: a tank body, which includes a chamber for storing water and an outlet for discharging water; and a valve, which includes an opening and closing unit for opening and closing the outlet in the tank body.

[0069] The suction nozzle body may include a valve operating unit, which operates the opening and closing unit during the placement of the water tank onto the suction nozzle body, thereby opening the outlet. The water supply path may be connected to the valve operating unit.

[0070] The water supply path may include a water pump for pumping water, and the water pump may be driven by a pump motor.

[0071] The water supply path may include: a supply pipe through which water discharged from the water tank flows; a connector connected to the supply pipe; a first branch pipe connected to the connector and supplying water to the first rotary cleaning unit; and a second branch pipe connected to the connector and supplying water to the second rotary cleaning unit.

[0072] The nozzles can be arranged in each of the first and second branch pipes. The nozzle tips can be arranged to face each rotating cleaning unit.

[0073] The supply pipe may include: a first supply pipe connected to the inlet of the water pump; and

[0074] A second supply pipe is connected to the outlet of the water pump and the connector.

[0075] The second flow path can divide the nozzle body into left and right parts, and the outlet and the water pump can be located on one side of the left and right sides of the second flow path.

[0076] The connector can be located directly above the second flow path.

[0077] Beneficial effects

[0078] According to the proposed implementation, it not only has a flow path that can suck up foreign objects on the floor, but also can wipe the floor by rotating the rotating plate attached to the mop, thereby improving the floor cleaning performance.

[0079] In addition, the water tank can be installed on the nozzle and supply water to the mop, thus increasing the user's convenience.

[0080] In addition, the water pump can be operated by a pump motor, so that the water in the tank can be stably supplied to the rotating cleaning unit during the cleaning process.

[0081] Furthermore, a drive unit with a drive rotating plate is provided on both the left and right sides relative to the center of the nozzle. A first flow path is formed at the front end of the nozzle, and a second flow path is formed at the center of the first flow path, which has the advantage of reducing the overall height of the nozzle. By reducing the overall height of the nozzle in this way, it is advantageous to clean under furniture, in narrow gaps, and other difficult areas.

[0082] Furthermore, in this embodiment, because the overall size of the nozzle is reduced, even when the nozzle is moved eccentrically along a straight path during cleaning, the user can easily move the nozzle in the desired direction (e.g., a straight path).

[0083] Furthermore, it has the advantage of being able to easily move the nozzle in the direction desired by the user, regardless of the speed of the drive motor. For example, if the user wants to change direction to the right, the speed of the drive motor on the left can be increased, and if the user wants to change direction to the left, the speed of the drive motor on the right can be increased.

[0084] In addition, because the flow path extends in the front-to-back direction at the center of the nozzle, and the drive devices for rotating each rotating cleaning unit are arranged on both sides of the flow path, the length of the air flow path used to make the air flow is prevented from increasing, thereby preventing increased flow path loss.

[0085] In addition, because the water tank is divided into two chambers on the left and right sides, the two chambers are connected in the front of the water tank, and the two chambers are arranged to surround the drive unit, it has the advantage of increasing the storage capacity of the water tank.

[0086] Furthermore, when the diameter of the rotating plate is larger than the diameter of the stitched portion of the mop's edge and smaller than the outer diameter of the mop, the rotating plate can support the outer portion of the stitched portion of the mop. Therefore, it can reduce the distance between mops while preventing mutual friction or overlap between mops caused by deformation of the mop's edge.

[0087] Furthermore, when the diameter of the mop is 0.6 times or more than half the width of the nozzle body in the horizontal direction, it not only increases the cleaning area of ​​the floor facing the nozzle body, but also increases the cleaning area of ​​the floor not facing the nozzle body. Therefore, even with a reduced nozzle movement, it is possible to clean the same area of ​​floor with a mop.

[0088] In addition, because the two drive units are arranged on both sides of the second flow path that extends in the front-to-back direction, the weight of the drive units can be evenly distributed from the nozzle to the left and right sides.

[0089] Furthermore, because the connecting chamber between the two chambers in the water tank is located between the first flow path and the plurality of drive devices, it is possible to prevent the center of gravity of the suction nozzle from tilting towards the rear of the suction nozzle.

[0090] Furthermore, according to this embodiment, since the nozzle connected to the end of the water supply path is exposed outside the suction nozzle housing, it is possible to prevent water sprayed from the nozzle from being introduced into the suction nozzle housing.

[0091] Furthermore, according to this embodiment, an outlet is formed in the water tank, the water supply path branches the water and supplies water to each of the multiple rotating cleaning units, thereby minimizing the amount of water leakage.

[0092] Furthermore, according to this embodiment, since the outlet and the water pump are located on one side of the second flow path in the suction flow path, it has the advantage of minimizing the length of the water supply flow path.

[0093] Furthermore, according to this embodiment, since the connector for the connecting branch pipe is located at the top of the second flow path, it is possible to provide substantially the same amount of water to each rotating cleaning section. Attached Figure Description

[0094] Figure 1 and Figure 2 This is a perspective view showing a suction nozzle for a cleaner according to an embodiment of the present invention.

[0095] Figure 3 This is a bottom view showing a suction nozzle for a cleaner according to an embodiment of the present invention.

[0096] Figure 4 This shows the view from the rear. Figure 1 A 3D view of a suction nozzle used in a cleaner.

[0097] Figure 5 It is along Figure 1 A sectional view cut by line AA.

[0098] Figure 6 and Figure 7 This is an exploded perspective view showing a suction nozzle according to an embodiment of the present invention.

[0099] Figure 8 and Figure 9 This is a perspective view of a water tank according to an embodiment of the present invention.

[0100] Figure 10 This is a perspective view showing a suction cap according to an embodiment of the present invention, viewed from above.

[0101] Figure 11 This is a perspective view showing a suction cap according to an embodiment of the present invention, as viewed from below.

[0102] Figure 12 This is a view showing the state in which the flow path forming portion is connected to the nozzle base according to an embodiment of the present invention.

[0103] Figure 13 This is a view showing a suction nozzle base according to an embodiment of the present invention, as viewed from below.

[0104] Figure 14 This is a view showing a plurality of switches mounted on a control panel according to an embodiment of the present invention.

[0105] Figure 15 This is a view showing a first drive device and a second drive device according to an embodiment of the present invention, as viewed from below.

[0106] Figure 16 This is a view showing the first and second drive devices according to an embodiment of the present invention, as viewed from above.

[0107] Figure 17This is a view showing the structure used to prevent the motor housing and drive motor from rotating.

[0108] Figure 18 This is a view showing the state in which the transmission unit is connected to the drive motor according to one embodiment of the present invention.

[0109] Figure 19 This is a view showing the state in which the transmission unit is connected to the drive motor according to another embodiment of the present invention.

[0110] Figure 20 This is a plan view showing the state in which the drive device according to one embodiment of the present invention is mounted on the nozzle base.

[0111] Figure 21 This is a front view showing the state in which the drive device according to one embodiment of the present invention is mounted on the nozzle base.

[0112] Figure 22 This is a top view showing a rotating plate according to an embodiment of the present invention, as viewed from above.

[0113] Figure 23 This is a bottom view showing a rotating plate according to an embodiment of the present invention, as viewed from below.

[0114] Figure 24 This is a view showing the water supply path of a water tank to a rotating cleaning unit according to an embodiment of the present invention.

[0115] Figure 25 This is a view showing a valve in a water tank according to an embodiment of the present invention.

[0116] Figure 26 This is a view showing the valve opening the outlet with the water tank installed on the nozzle housing.

[0117] Figure 27 This is a view showing the state in which the rotating plate is connected to the nozzle body according to one embodiment of the present invention.

[0118] Figure 28 This is a view showing the arrangement of nozzles in a suction nozzle body according to an embodiment of the present invention.

[0119] Figure 29 This is a conceptual diagram illustrating a process of supplying water from a water tank to a rotating cleaning unit according to an embodiment of the present invention.

[0120] Figure 30 This is a perspective view showing a suction nozzle for a cleaner, separated from the connecting tube, according to an embodiment of the invention, as viewed from the rear side.

[0121] Figure 31 It is shown Figure 30 A cross-sectional view of region 'A' in the diagram.

[0122] Figure 32 It is shown Figure 31 A 3D diagram of the washer. Detailed Implementation

[0123] Hereinafter, some embodiments of the present invention will be described in detail with the aid of exemplary drawings. When adding reference numerals to the elements in each figure, care should be taken to assign the same reference numerals to these identical elements whenever possible, even if the same element is shown in different figures. Furthermore, in describing embodiments of the present invention, detailed descriptions of related known structures or functions will be omitted if it is determined that such detailed descriptions would interfere with the understanding of the embodiments of the present invention.

[0124] Furthermore, when describing the constituent elements of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are merely for distinguishing one component from others, and the nature, order, or sequence of the components is not limited by these terms. When a component is described as being "connected" or "linked" to another component, the component may be directly connected to that other component, but it should be understood that each component may be "connected" or "linked" to another component.

[0125] Figure 1 and Figure 2 This is a perspective view showing a suction nozzle for a cleaner according to an embodiment of the present invention. Figure 3 This is a bottom view showing a suction nozzle for a cleaner according to an embodiment of the present invention. Figure 4 This shows the view from the rear. Figure 1 A 3D view of the nozzle used for a cleaner, and Figure 5 It is along Figure 1 A sectional view cut by line AA.

[0126] refer to Figures 1 to 5 According to an embodiment of the present invention, the nozzle 1 of the cleaner (hereinafter referred to as "nozzle") includes a nozzle body 10 and a connecting tube 50, which is connected to the nozzle body 10 and is movable.

[0127] The suction nozzle 1 of this embodiment can be used, for example, when connected to a handheld cleaner or a canister cleaner.

[0128] The nozzle 1 itself has a battery that powers the power consumption unit, and can also be operated by receiving power from the cleaner.

[0129] Because the cleaner connected to nozzle 1 includes a suction motor, the suction force generated by the suction motor is applied to nozzle 1 to suck up foreign objects and air from the bottom surface of nozzle 1.

[0130] Therefore, in this embodiment, the suction nozzle 1 is capable of sucking up foreign objects and air from the floor and directing the foreign objects and air to the cleaner.

[0131] Although not limited to this, the connecting tube 50 is connected to the rear central portion of the nozzle body 10 to guide the sucked air to the cleaner.

[0132] The nozzle 1 may also include rotating cleaning units 40 and 41 rotatably arranged below the nozzle body 10.

[0133] For example, a pair of rotating cleaning units 40 and 41 can be arranged in the lateral direction. This pair of rotating cleaning units 40 and 41 can rotate independently. For example, the nozzle 1 may include a first rotating cleaning unit 40 and a second rotating cleaning unit 41.

[0134] Rotary cleaning units 40 and 41 may each include mops 402 and 404. For example, mops 402 and 404 may be formed in a disc shape. Mops 402 and 404 may include a first mop 402 and a second mop 404.

[0135] The nozzle body 10 may include a nozzle housing 100 forming an external shape. The nozzle housing 100 may form suction flow paths 112 and 114 for drawing air.

[0136] The suction flow paths 112 and 114 include: a first flow path 112 that extends laterally in the nozzle housing 100; and a second flow path 114 that communicates with the first flow path 112 and extends in the front-back direction.

[0137] The first flow path 112 may be formed, for example, on the front end portion of the lower surface of the nozzle housing 100.

[0138] The second flow path 114 can extend rearward from the first flow path 112. For example, the second flow path 114 can extend rearward from the central portion of the first flow path 112 toward the connecting pipe 50.

[0139] Therefore, the centerline A1 of the first flow path 112 can extend in the horizontal direction. The centerline A2 of the second flow path 114 extends in the front-back direction and intersects with the centerline A1 of the first flow path 112.

[0140] The centerline A2 of the second flow path 114 can be positioned, for example, at a position approximately halfway between the nozzle body 10.

[0141] With the rotating cleaning units 40 and 41 connected to the lower side of the nozzle body 10, a portion of the mops 402 and 404 protrudes outward from the nozzle 1. Therefore, the rotating cleaning units 40 and 41 can clean not only the floor directly below the nozzle, but also the floor outside the nozzle 1.

[0142] For example, mops 402 and 404 can protrude not only to the sides of nozzle 1, but also to the rear of nozzle 1.

[0143] Rotary cleaning units 40 and 41 can be positioned, for example, from below the nozzle body 10 on the rear side of the first flow path 112.

[0144] Therefore, when the suction nozzle 1 moves forward and cleans, foreign objects and air on the floor are sucked up by the first flow path 112, and the floor can be cleaned by the mop 402, 404.

[0145] In this embodiment, the first rotation center C1 of the first rotating cleaning unit 40 (e.g., the rotation center of the rotating plate 420) and the second rotation center C2 of the second rotating cleaning unit 41 (e.g., the rotation center of the rotating plate 440) are arranged in the lateral direction with the two units spaced apart from each other.

[0146] The centerline A2 of the second flow path 114 can be located in the region between the first rotation center C1 and the second rotation center C2.

[0147] The central axis Y, which divides the front and rear length L1 of the nozzle body 10 (excluding the extension portion) into two equal parts, can be positioned in front of the rotation centers C1 and C2 of each rotating cleaning unit 40 and 41.

[0148] Compared to the central axis Y that bisects the front-to-back length L1 of the nozzle body 10, the rotation centers C1 and C2 of each rotating cleaning unit 40 and 41 can be located further away from the front end of the nozzle body 10. This is to prevent the rotating cleaning units 40 and 41 from blocking the first flow path 112.

[0149] Therefore, the distance L3 between the central axis Y and the rotation centers C1 and C2 of each rotating cleaning unit 40 and 41 can be set to a value greater than zero.

[0150] Furthermore, the distance L2 between the rotation centers C1 and C2 of the rotating cleaning units 40 and 41 can be made larger than the diameter of each mop 402 and 404. This is to prevent the mops 402 and 404 from interfering with each other during rotation and to prevent the area that can be cleaned from being reduced due to the interference.

[0151] The diameters of mops 402 and 404 are preferably 0.6 times or more than half the width of the nozzle body 10, but are not limited thereto. In this case, the area of ​​the floor facing the nozzle body 10 that mops 402 and 404 can clean increases, and the area of ​​the floor not facing the nozzle body 10 that can be cleaned also increases. In addition, when cleaning with the nozzle 1, even with slight movement, the area cleaned by mops 402 and 404 can be guaranteed.

[0152] Furthermore, mops 402 and 404 may be equipped with sewing threads 405. The sewing threads 405 may be positioned at the edges of mops 402 and 404 with spacing between them along the center direction. Mops 402 and 404 may be composed of multiple fiber materials, and the fiber materials may be bonded together by means of the sewing threads 405.

[0153] At this point, the diameters of the rotating plates 420 and 440 (described later) can be larger than the diameter of a portion of the sewing thread 405 relative to the center of the mops 402 and 404. The diameters of the rotating plates 420 and 440 can be smaller than the outer diameters of the mops 402 and 404.

[0154] In this configuration, the rotating plates 420 and 440 can support the portions of mops 402 and 404 positioned outside the sewing thread 405, thereby reducing the distance between mops 402 and 404 and preventing mutual friction or vertical overlap between mops 402 and 404 caused by deformation of the mops 402 and 404 due to pressing the edge portions.

[0155] The nozzle housing 100 may include a nozzle base 110 and a nozzle cover 130 connected to the upper side of the nozzle base 110.

[0156] The nozzle base 110 may have a first flow path 112. The nozzle housing 100 may also include a flow path forming portion 150, which together with the nozzle base 110 forms a second flow path 114.

[0157] The flow path forming portion 150 can be connected to the upper central portion of the nozzle base 110, and the end of the flow path forming portion 150 can be connected to the connecting tube 50.

[0158] Therefore, because of the arrangement of the flow path forming portion 150, the second flow path 114 can extend in a roughly straight line in the front-back direction, so the length of the second flow path 114 can be minimized, thereby minimizing the flow path loss in the nozzle 1.

[0159] The front portion of the flow path forming portion 150 may cover the upper side of the first flow path 112. The flow path forming portion 150 may be arranged to slope upward from the front end to the rear.

[0160] Therefore, the height of the front part of the flow path forming portion 150 can be lower than the height of the rear part of the flow path forming portion 150.

[0161] According to this embodiment, because the front of the flow path forming portion 150 is low, it has the advantage of reducing the overall height of the nozzle 1. The lower the height of the nozzle 1, the more likely it is to be pulled into the narrow space under the furniture or chair to be cleaned.

[0162] The nozzle base 110 may include an extension 129 for supporting the connecting tube 50. The extension 129 may extend rearward from the rear end of the nozzle base 110.

[0163] The connecting tube 50 may include: a first connecting tube 510 connected to the end of the flow path forming portion 150; a second connecting tube 520 rotatably connected to the first connecting tube 510; and a guide tube 530 for communicating the first connecting tube 510 and the second connecting tube 520.

[0164] The first connecting tube 510 can be mounted on the extension portion 129, and the second connecting tube 520 can be connected to the extension tube or hose of the cleaner.

[0165] Multiple rollers for smooth movement of the nozzle 1 can be provided on the lower side of the nozzle base 110.

[0166] For example, the first roller 124 and the second roller 126 can be positioned behind the first flow path 112 on the nozzle base 110. The first roller 124 and the second roller 126 can be spaced apart from each other in the lateral direction.

[0167] According to this embodiment, the first roller 124 and the second roller 126 are arranged behind the first flow path 112, so that the first flow path 112 can be as close as possible to the front end of the nozzle base 110, thereby increasing the area that can be cleaned using the nozzle 1.

[0168] As the distance from the front end of the nozzle base 110 to the first flow path 112 increases, the area in front of the first flow path 112 where suction force should not be applied during cleaning increases, and therefore, the area that is not cleaned increases.

[0169] On the other hand, according to this embodiment, the distance from the front end of the nozzle base 110 to the first flow path 112 can be minimized, thereby increasing the cleanable area.

[0170] Furthermore, by arranging the first roller 124 and the second roller 126 behind the first flow path 112, the length of the first flow path 112 in the lateral direction can be maximized.

[0171] In other words, it is possible to minimize the distance between the two ends of the first flow path 112 and the two ends of the nozzle base 110.

[0172] In this embodiment, the first roller 124 can be positioned in the space between the first flow path 112 and the first mop 402. The second roller 126 can be positioned in the space between the first flow path 112 and the second mop 404.

[0173] The first roller 124 and the second roller 126 can be rotatably connected to the shaft 125. The shaft 125 can be fixed to the underside of the nozzle base 110 in a state in which it extends in the lateral direction.

[0174] The distance between the shaft 125 and the front end portion of the nozzle base 110 is longer than the distance between the front end portion of the nozzle base 110 and each mop 402 and 404 (or the rotating plate described later).

[0175] At least a portion of each of the rotating cleaning units 40 and 41 (mop and / or rotating plate) may be positioned between the shaft 125 of the first roller 124 and the shaft 125 of the second roller 126.

[0176] With this arrangement, the rotating cleaning units 40 and 41 can be positioned as close as possible to the first flow path 112, and the area of ​​the floor where the nozzle 1 is located that is cleaned by the rotating cleaning units 40 and 41 can be increased, thereby improving the floor cleaning performance.

[0177] The number of rollers is not limited to a specific number, but the nozzle 1 can be supported at three points. In other words, the multiple rollers may also include a third roller 129a disposed on the extension 129 of the nozzle base 110.

[0178] The third roller 129a can be positioned behind the mops 402 and 404 to prevent interference with the mops 402 and 404.

[0179] Meanwhile, the nozzle body 10 may also include a water tank 200 to supply water to the mops 402 and 404.

[0180] The water tank 200 can be detachably connected to the nozzle housing 100. Water in the water tank 200 can be supplied to each mop 402 and 404 while the water tank 200 is mounted on the nozzle housing 100.

[0181] The nozzle body 10 may also include an operation unit 300, which is operated to separate the nozzle body 10 when the water tank 200 is placed on the nozzle housing 100.

[0182] For example, the operating unit 300 may be disposed in the nozzle housing 100. The nozzle housing 100 may be provided with a first connection unit 310 for connection with the water tank 200, and the water tank 200a may be provided with a second connection unit 254 for connection with the first connection unit 310.

[0183] The operating unit 300 can be arranged to move vertically within the nozzle housing 100. The first connecting unit 310 can move under the operating unit 300 under the operating force of the operating unit 300.

[0184] For example, the first connecting unit 310 can move in the back-and-forth direction. To this end, the operating unit 300 and the first connecting unit 310 may include inclined surfaces that are in contact with each other.

[0185] When the operating unit 300 is lowered by means of the inclined surface, the first connecting unit 310 can move horizontally (e.g., in the front-back direction).

[0186] The first connecting unit 310 includes a hook 312 for engaging with the second connecting unit 254, and the second connecting unit 254 includes a groove 256 for inserting the hook 312.

[0187] The first connecting unit 310 can be elastically supported by the elastic member 314 to maintain the connection between the first connecting unit 310 and the second connecting unit 254.

[0188] Therefore, when the hook 312 is inserted into the slot 256 by means of the elastic member 314 and the operating unit 300 is pressed down, the hook 312 separates from the slot 256. With the hook 312 disengaged from the slot 256, the water tank 200 can be separated from the suction nozzle housing 100.

[0189] In this embodiment, the operation unit 300 may be positioned, for example, directly above the second flow path 114. For example, the operation unit 300 may be arranged to overlap with the center line A2 of the second flow path 114 in the vertical direction.

[0190] Additionally, the nozzle body 10 may include an adjustment unit 180 for adjusting the amount of water discharged from the water tank 200. For example, the adjustment unit 180 may be located at the rear of the nozzle body 10.

[0191] The adjustment unit 180 can be operated by the user, and the adjustment unit 180 can allow water to be discharged from the water tank 200 or prevent water from being discharged.

[0192] Alternatively, the amount of water discharged from the water tank 200 can be adjusted by the adjusting unit 180. For example, when the adjusting unit 180 is operated, a first amount of water is discharged from the water tank 200 per unit time, or a second amount of water is discharged from the water tank 200 per unit time, the second amount being greater than the first amount.

[0193] The adjustment unit 180 can be pivotally mounted to the nozzle body 10 in the lateral direction, or it can be pivotally mounted in the vertical direction.

[0194] For example, when the adjustment unit 180 is in the neutral position (e.g.) Figure 4 As shown in the figure, the amount of water discharged is 0, and when the left side of the adjustment unit 180 is pushed to pivot the adjustment unit 180 to the left, the first amount of water can be discharged from the water tank 200 per unit time.

[0195] When the regulating unit 180 is pushed to the right by pushing its right side, a second amount of water can be discharged from the water tank 200 per unit time. The construction of the regulating unit 180 for detecting operation will be described later with reference to the accompanying drawings.

[0196] Figure 6 and Figure 7 This is an exploded perspective view of a suction nozzle according to an embodiment of the present invention, and Figure 8 and Figure 9 This is a perspective view of a water tank according to one embodiment of the present invention.

[0197] Figure 3 as well as Figures 6 to 9 The nozzle body 10 may also include multiple drive units 170 and 171 for individually driving each rotating cleaning unit 40 and 41.

[0198] The plurality of drive devices 170 and 171 may include a first drive device 170 for driving the first rotating cleaning unit 40 and a second drive device 171 for driving the second rotating cleaning unit 41.

[0199] Because each of the drive units 170 and 171 operates independently, there is an advantage that even if some of the drive units 170 and 171 fail, the rotating cleaning device can still rotate with the help of the other drive unit.

[0200] The first drive unit 170 and the second drive unit 171 can be spaced apart from each other in the lateral direction in the nozzle body 10.

[0201] Drive units 170 and 171 can be positioned after the first flow path 112.

[0202] For example, at least a portion of the second flow path 114 can be located between the first drive unit 170 and the second drive unit 171. Therefore, even if multiple drive units 170 and 171 are provided, the second flow path 114 will not be affected, thus minimizing the length of the second flow path 114.

[0203] According to this embodiment, since the first driving device 170 and the second driving device 171 are arranged on both sides of the second flow path 114, the weight of the nozzle 1 can be evenly distributed to the left and right sides, thereby preventing the center of gravity of the nozzle 1 from shifting to either side of the nozzle 1.

[0204] Multiple drive units 170 and 171 can be arranged in the nozzle body 10. For example, multiple drive units 170 and 171 can be seated on the upper side of the nozzle base 110 and covered by the nozzle cover 130. In other words, multiple drive units 170 and 171 can be located between the nozzle base 110 and the nozzle cover 130.

[0205] Each of the rotary cleaning units 40 and 41 may further include rotary plates 420 and 440, which rotate by receiving power from each of the drive units 170 and 171.

[0206] Rotating plates 420 and 440 may include: a first rotating plate 420 connected to a first drive unit 170 and attached to a first mop 402; and a second rotating plate 420 connected to a second drive unit 171 and attached to a second mop 440.

[0207] Rotating plates 420 and 440 can be formed in a disc shape, and mops 402 and 404 can be attached to the bottom surface of rotating plates 420 and 440.

[0208] Rotating plates 420 and 440 can be connected to the respective drive units 170 and 171 on the underside of the nozzle base 110. In other words, rotating plates 420 and 440 can be connected to the drive units 170 and 171 on the outside of the nozzle housing 100.

[0209] <Water Tank>

[0210] The water tank 200 can be mounted on the upper side of the nozzle housing 100. For example, the water tank 200 can sit on the nozzle cover 130. With the water tank 200 mounted on the upper side of the nozzle cover 130, the water tank 200 can form part of the appearance of the nozzle body 10. For example, the water tank 200 can form part of the appearance of the upper surface of the nozzle body 10.

[0211] The water tank 200 may include a first body 210 and a second body 250, the second body 250 being connected to the first body 210 and together defining a chamber for storing water.

[0212] The chamber may include: a first chamber 222 located above the first drive unit 170; a second chamber 224 located above the second drive unit 171; and a connecting chamber 226 connecting the first chamber 222 and the second chamber 224 and located above the second flow path 114.

[0213] In this invention, the volume of the connecting chamber 226 can be made smaller than that of the first chamber 222 and the second chamber 224, so as to increase the water storage capacity while minimizing the height of the suction nozzle 1 through the water tank 200.

[0214] The water tank 200 can be configured with a low front and a high rear. The upper surface of the water tank 200 can be sloped upwards or rounded from the front to the rear.

[0215] For example, the connecting chamber 226 can connect to the first chamber 222 and the second chamber 224 located on both sides at the front of the water tank 200. In other words, the connecting chamber 226 can be positioned at the front of the water tank 200.

[0216] The water tank 200 may include a first inlet 211 for introducing water into a first chamber 222 and a second inlet 212 for introducing water into a second chamber 224.

[0217] The first inlet 211 may be covered by a first inlet cover 240, and the second inlet 212 may be covered by a second inlet cover 242. For example, each of the inlet covers 242 and 240 may be formed of a rubber material.

[0218] For example, each of inlets 211 and 212 can be formed on two side surfaces of the first body 210.

[0219] The height of the two side surfaces of the first body 210 can be lowest at the front end and can increase towards the rear.

[0220] To ensure the dimensions of each of the inlets 211 and 212, each of the inlets 211 and 212 can be positioned closer to the rear portion than the front portion at both side surfaces of the first body 210.

[0221] The first body 210 may include a first slot 218 for preventing interference with the operating unit 300 and the connecting units 310 and 254. The first slot 218 may be formed such that the central rear end portion of the first body 210 is recessed forward.

[0222] Furthermore, the second body 250 may include a second slot 252 to prevent interference with the operating unit 300. The second slot 252 may be formed such that the central rear end portion of the second body 250 is recessed forward.

[0223] The second body 250 may further include a slot cover 253, which covers a portion of the first slot 218 of the first body 210 when connected to the first body 210. In other words, the front-to-back length of the second slot 252 is shorter than the front-to-back length of the first slot 218.

[0224] The second connecting unit 254 can extend downward from the slot cover 253. Therefore, the second connecting unit 254 can be positioned within the space formed by the first slot 218.

[0225] The water tank 200 may also include connecting ribs 235 and 236 for connecting to the nozzle cover 130 before the second connecting unit 254 of the water tank 200 is connected to the first connecting unit 310.

[0226] The connecting ribs 235 and 236 also serve to guide the water tank 200 in the connection position of the nozzle cover 130 before the second connecting unit 254 of the water tank 200 is connected to the first connecting unit 310.

[0227] For example, multiple connecting ribs 235 and 236 protrude from the first body 210 and can be arranged to be spaced apart in the left and right horizontal directions.

[0228] Although unrestricted, multiple connecting ribs 235 and 236 may protrude forward from the front surface of the first body 210 and may be spaced apart from each other in the lateral direction.

[0229] Each of the drive units 170 and 171 is disposed in the nozzle housing 100 such that a portion of the nozzle housing 100 protrudes upward on both sides of the second flow path 114 due to each of the drive units 170 and 171.

[0230] The water tank 200 can form a pair of receiving spaces 232 and 233 to prevent the water tank 200 from interfering with the portion protruding from the nozzle housing 100. This pair of receiving spaces 232 and 233 can be formed as an upwardly recessed part of the first body 210. This pair of receiving spaces 232 and 233 can be divided into left and right parts by a first slot 218.

[0231] The water tank 200 may also include an outlet 216 through which water is discharged.

[0232] For example, the outlet 216 may be formed on the lower surface of the first body 210.

[0233] The outlet 216 can be opened or closed by valve 230. Valve 230 can be arranged in water tank 200. Valve 230 can be operated by external force, and as long as no external force is applied, valve 230 will keep outlet 216 closed. Therefore, when water tank 200 is separated from nozzle body 10, water can be prevented from being discharged from water tank 200 through outlet 216.

[0234] In this embodiment, the water tank 200 may include a single outlet 216. The outlet 216 may be located below one of the first chamber 222 and the second chamber 224. In other words, the outlet 216 may be located close to either of the pair of receiving spaces 232 and 233.

[0235] The reason for providing a single drain outlet 216 to the water tank 200 is to reduce the number of components that could lead to water leakage.

[0236] In other words, because the nozzle 1 contains components that receive power and operate (control panel, drive motor, etc.), it is necessary to completely prevent these components from contacting the water. Therefore, in order to prevent the components from contacting the water, leakage from the water supply and discharge parts of the water tank 200 is minimized.

[0237] As the number of outlets 216 in the water tank 200 increases, additional structures are needed to prevent water leakage, making the structure complex, and even if a structure to prevent water leakage is present, it may not be able to completely prevent water leakage.

[0238] Furthermore, as the number of outlets 216 in the water tank 200 increases, the number of valves 230 used to open and close the outlets 216 also increases. This means that the number of components increases due to the valves 230 and the volume of the chamber used for water storage in the water tank 200 decreases.

[0239] Because the rear side of the water tank 200 is higher than the front side, the outlet 216 is positioned close to the front end of the first body 210, so that the water in the water tank 200 can be discharged smoothly.

[0240] <Sucking Cap>

[0241] Figure 10 This is a perspective view of a suction cap according to one embodiment of the present invention, viewed from above. Figure 11 This is a perspective view of a nozzle cap according to one embodiment of the present invention, viewed from below.

[0242] refer to Figure 6 , Figure 10 and Figure 11 The nozzle cover 130 may include drive unit covers 132 and 134 that cover the upper side of each of the drive units 170 and 171.

[0243] Each of the drive unit covers 132 and 134 is an upwardly projecting portion from the nozzle cover 130. Each of the drive unit covers 132 and 134 can surround the upper side of the drive units 170 and 171 without interfering with each of the drive units 170 and 171 mounted in the nozzle base 110. In other words, the drive unit covers 132 and 134 are spaced apart from each other in the lateral direction within the nozzle cover 130.

[0244] When the water tank 200 is seated on the nozzle cover 130, each of the drive unit covers 132 and 134 is received in each of the receiving spaces 232 and 233 of the water tank 200, thus preventing interference between the components.

[0245] Additionally, in the water tank 200, the first chamber 222 and the second chamber 224 can be arranged to surround the periphery of each of the respective drive unit covers 132 and 134.

[0246] Therefore, according to this embodiment, the volume of the first chamber 222 and the second chamber 224 can be increased.

[0247] Compared to the drive unit covers 132 and 134, the first body 210 of the water tank 200 can be positioned further below the nozzle cover 130.

[0248] At least a portion of the bottom of the water tank 200 may be positioned below the axis of the drive motor, which will be described later (see [reference]). Figure 21 (A3 and A4 in the text), thereby minimizing the increase in height due to the water tank 200. For example, the bottom of the first chamber 222 and the second chamber 224 can be positioned below the axis of the drive motor, which will be described later (see A3 and A4 in the text). Figure 21 (A3 and A4 in the text).

[0249] The nozzle cover 130 may also include a flow path cover 136 covering the flow path forming portion 150. The flow path cover 136 may be arranged between the drive unit covers 132 and 134 and may be arranged at a position corresponding to the first slot 218 of the water tank 200.

[0250] The flow path cover 136 can support the operating unit 300. The operating unit 300 may include a connecting hook 302 for attaching to the flow path cover 136. The operating unit 300 can be attached to the flow path cover 136 from above.

[0251] With the connecting hook 302 connected to the flow path cover 136, the operation unit 300 can be prevented from separating upward from the flow path cover 136.

[0252] The flow path cover 136 may have an opening 136a into which the second connecting unit 254 can be inserted. When the second connecting unit 254 of the water tank 200 is inserted into the opening 136a, the first connecting unit 310 can be connected to the second connecting unit 254.

[0253] The flow path cover 136 can be located in the first slot 218 of the first body 210 and the second slot 252 of the second body 250.

[0254] In this embodiment, in order to increase the water storage capacity of the water tank 200, a portion of the water tank 200 may be located on both sides of the flow path cover 136. Therefore, while preventing interference between the water tank 200 and the second flow path 114, the water storage capacity of the water tank 200 can be increased.

[0255] In addition, the highest point of the water tank 200 can be equal to or lower than the highest point of the flow path cover 136, thereby preventing the water tank 200 from causing an increase in the height of the nozzle 1.

[0256] Furthermore, to prevent the water tank 200 from colliding with the structures surrounding the nozzle 1 during its movement, the entire water tank 200 can be arranged to overlap with the nozzle housing 100 in the vertical direction. In other words, the water tank 200 does not need to protrude along the lateral or longitudinal directions of the nozzle housing 100.

[0257] The nozzle cover 130 may further include rib insertion holes 141 and 142, into which connecting ribs 235 and 236 disposed in the water tank 200 are inserted. The rib insertion holes 141 and 142 may be spaced apart from the nozzle cover 130 in the lateral horizontal direction.

[0258] Therefore, with the connecting ribs 235 and 236 inserted into the rib insertion holes 141 and 142, the center or rear of the water tank 200 moves downward, so that the second connecting unit 254 can be connected to the first connecting unit 310.

[0259] The nozzle cover 130 may be provided with a valve operating unit 144 for operating the valve 230 in the water tank 200. The valve operating unit 144 may be connected to the nozzle cover 130.

[0260] Water discharged from water tank 200 can flow through valve operating unit 144.

[0261] The valve operating unit 144 can be connected to the lower side of the nozzle cover 130, and a portion of the valve operating unit 144 can protrude upward through the nozzle cover 130.

[0262] When the water tank 200 is placed on the suction nozzle housing 100, the upwardly protruding valve operating unit 144 is introduced into the water tank 200 through the outlet 216 of the water tank 200. In other words, the valve operating unit 144 can be arranged facing the outlet 216 of the water tank 200.

[0263] The valve operating unit 144 will be described later with reference to the accompanying drawings.

[0264] The nozzle cover 130 may be provided with a seal 143 for preventing water discharged from the water tank 200 from leaking near the valve operating unit 144. The seal 143 may be formed of, for example, a rubber material and may be attached to the nozzle cover 130 from above. The outlet 216 may contact the seal 143.

[0265] The suction nozzle cover 130 may be equipped with a water pump 270, which is used to control the water discharged from the water tank 200. The water pump 270 may be connected to a pump motor 280.

[0266] A pump mounting rib 146 for mounting a water pump 270 may be provided on the lower side of the suction nozzle cover 130. The water pump 270 and the pump motor 280 are mounted in the suction nozzle cover 130, so that even if water falls into the suction nozzle base 110, the pump motor 280 will be prevented from contacting water.

[0267] Pump 270 is a pump that operates to connect the inlet and outlet by expanding or contracting the valve body therein during operation, and the pump can be implemented by a known structure, so its detailed description will be omitted.

[0268] The valve body in the water pump 270 can be driven by the pump motor 280. Therefore, according to this embodiment, while the pump motor 280 is operating, water in the water tank 200 can be continuously and stably supplied to the rotary cleaning units 40 and 41.

[0269] The operation of the pump motor 280 can be adjusted by operating the adjustment unit 180 described above. For example, the adjustment unit 180 can select the on / off state of the pump motor 280.

[0270] Alternatively, the output (or speed) of the pump motor 280 can be adjusted by the regulating unit 180.

[0271] The nozzle cover 130 may further include at least one fastening boss 148 for engagement with the nozzle base 110.

[0272] Additionally, the nozzle cover 130 may be provided with nozzles 149 for spraying water onto the rotating cleaning units 40 and 41, which will be described later. For example, a pair of nozzles 149 may be mounted on the nozzle cover 130 with them spaced apart from each other in the lateral direction.

[0273] The nozzle cover 130 may be provided with a nozzle mounting boss 149c for accommodating the nozzle 149. For example, the nozzle 149 may be fastened to the nozzle mounting boss 149c by means of screws.

[0274] Nozzle 149 may include a connection unit 149a for connecting to a branch pipe, which will be described later.

[0275] <Suction nozzle base>

[0276] Figure 12 This is a view showing the state in which the flow path forming portion is connected to the nozzle base according to an embodiment of the present invention, and Figure 13 This is a view showing a suction nozzle base according to an embodiment of the present invention, as viewed from below.

[0277] refer to Figure 6 , Figure 12 and Figure 13 The nozzle base 110 may include a pair of shaft through holes 116 and 118 through which the drive shaft (which will be described later) connected to each of the rotating plates 420 and 440 in each of the drive units 170 and 171 passes.

[0278] The nozzle base 110 is provided with a seating groove 116a for seating a sleeve (described later) disposed in each of the drive units 170 and 171, and shaft through holes 116 and 118 may be formed in the seating groove 116a.

[0279] For example, the seating groove 116a can be formed in a circular shape and can be recessed downward from the nozzle base 110. Through holes 116 and 118 can be formed in the bottom of the seating groove 116a.

[0280] When the sleeves (described later) provided in the drive units 170 and 171 are seated in the seat groove 116a, the horizontal movement of the drive units 170 and 171 is restricted during the movement of the suction nozzle 1 or during the operation of the drive units 170 and 171.

[0281] With the flow path forming portion 150 connected to the nozzle base 110, each of the shaft through holes 116 and 118 can be arranged on both sides of the flow path forming portion 150.

[0282] The nozzle base 110 may be provided with a mounting portion 120 for mounting a control board 115, which is used to control each of the drive devices 170 and 171. For example, the board mounting portion 120 may be formed in the shape of a hook extending upward from the nozzle base 110.

[0283] The hook of the plate mounting portion 120 is attached to the upper surface of the control plate 115 to restrict the upward movement of the control plate 115.

[0284] The control panel 115 can be arranged horizontally. The control panel 115 can be mounted spaced apart from the bottom of the nozzle base 110.

[0285] Therefore, even if water falls to the bottom of the nozzle base 110, it can prevent water from contacting the control panel 115.

[0286] The nozzle base 110 may be provided with a support protrusion 120a for supporting the control plate 115 away from the bottom.

[0287] The plate mounting portion 120 may be located on one side of the flow path forming portion 150 in the nozzle base 110, but is not limited thereto. For example, the control plate 115 may be located adjacent to the adjustment unit 180.

[0288] Therefore, the switch mounted on the control panel 115 (which will be described later) can sense the operation of the adjustment unit 180.

[0289] In this embodiment, the control plate 115 can be located on the opposite side of the valve operating unit 144 relative to the second flow path 114. Therefore, even if a leak occurs in the valve operating unit 144, water can be prevented from flowing to the control plate 115 side.

[0290] The nozzle base 110 may further include: a support rib 122 for supporting the lower side of each of the drive units 170 and 171; and fastening bosses 117 and 117a for fastening each of the drive units 170 and 171.

[0291] Support ribs 122 protrude from the nozzle base 110 and bend at least once to separate each of the drive units 170 and 171 from the bottom of the nozzle base 110. Alternatively, a plurality of spaced-apart support ribs 122 may protrude from the nozzle base 110 to separate each of the drive units 170 and 171 from the bottom of the nozzle base 110.

[0292] Even if water falls to the bottom of the nozzle base 110, the drive units 170 and 171 are separated from the bottom of the nozzle base 110 by the support ribs 122, which minimizes the water flow on the drive unit 170 and 171 side.

[0293] Additionally, the nozzle base 110 may further include a nozzle orifice 119 through which each nozzle 149 passes.

[0294] When the nozzle cover 130 is connected to the nozzle base 110, a portion of the nozzle 149 connected to the nozzle cover 130 can pass through the nozzle hole 119.

[0295] Additionally, the nozzle base 110 may further include: a clearance hole 121a for preventing interference with the structure of each of the drive units 170 and 171; and a fastening boss 121 for fastening the flow path forming portion 150.

[0296] A portion of each of the drive units 170 and 171 may be positioned in the clearance hole 121a such that the support rib 122 may be positioned around the clearance hole 121a to minimize the flow of water into the clearance hole 121a.

[0297] For example, the support rib 122 can be located in the clearance hole 121a in the forming area.

[0298] Installation locations for multiple switches

[0299] Figure 14 This is a diagram illustrating a plurality of switches disposed on a control panel according to an embodiment of the present invention.

[0300] refer to Figure 4 and Figure 14 As described above, the nozzle base 110 is provided with a control board 115 as described above. Multiple switches 128a and 128b may be provided on the upper surface of the control board 115 to sense the operation of the adjustment unit 180.

[0301] Multiple switches 128a and 128b can be installed in a laterally spaced configuration.

[0302] The plurality of switches 128a and 128b may include a first switch 128a for sensing a first position of the adjustment unit 180 and a second switch 128b for sensing a second position of the adjustment unit 180.

[0303] For example, when the regulating unit 180 pivots to the left and moves to the first position, the regulating unit 180 presses the contact of the first switch 128a to turn on the first switch 128a. In this case, the pump motor 280 operates as the first output, and the water in the water tank 200 can be discharged at a first amount per unit time.

[0304] When the adjustment unit 180 pivots to the right and moves to the second position, the adjustment unit 180 presses the contact of the second switch 128b, causing the second switch 128b to be turned on.

[0305] In this case, the pump motor 280 operates as a second output, which is greater than the first output, so that water in the water tank 200 can be discharged in a second amount per unit time.

[0306] When the regulating unit 180 is in the neutral position between the first position and the second position, the regulating unit 180 does not press the contacts of the first switch 128a and the second switch 128b, and the pump motor 280 stops.

[0307] <Drive device>

[0308] Figure 15 This is a view showing the first and second drive units according to an embodiment of the present invention, as viewed from below. Figure 16 This is a view showing the first and second drive devices according to an embodiment of the present invention, as viewed from above. Figure 17 This is a view showing the structure used to prevent the motor housing and drive motor from rotating, and Figure 18 This is a view showing the state in which the transmission unit is connected to the drive motor according to one embodiment of the present invention.

[0309] refer to Figures 14 to 18 The first drive unit 170 and the second drive unit 171 can be symmetrically formed and arranged in the lateral direction.

[0310] The first drive device 170 may include a first drive motor 182, and the second drive device 171 may include a second drive motor 184.

[0311] The motor PCB 350 for driving each drive motor can be connected to drive motors 182 and 184. The motor PCB 350 can be connected to the control board 115 to receive control signals. The motor PCB 350 can be connected to drive motors 182 and 184 in an upright position and can be spaced apart from the nozzle base 110.

[0312] The motor PCB 350 may include multiple resistors 352 and 354 to improve the electromagnetic interference (EMI) performance of the drive motor.

[0313] For example, a pair of resistors 352 and 354 can be provided in the motor PCB 350.

[0314] One of a pair of resistors, 352 and 354, can be connected to the (+) terminal of the drive motor, and the other resistor can be connected to the (-) terminal of the drive motor. Such a pair of resistors, 352 and 354, can reduce the output fluctuation of the drive motor.

[0315] A pair of resistors 352 and 354 can be, for example, laterally spaced from the motor PCB 350.

[0316] Each of the drive units 170 and 171 may further include a motor housing. Drive motors 182 and 184, as well as a transmission unit for transmitting power, may be housed within the motor housing.

[0317] The motor housing may include, for example, a first housing 172 and a second housing 173 connected to the upper side of the first housing 172.

[0318] With each drive motor 182 and 184 mounted in a motor housing, the axis of each drive motor 182 and 184 can extend in the horizontal direction. If the drive unit is mounted in the motor housing such that the axis of each drive motor 182 and 184 extends in the horizontal direction, the drive units 170 and 171 can be compact.

[0319] The first housing 172 may have a shaft hole 175 through which a drive shaft 190 for connection with the rotating plates 420 and 440 of the transmission unit passes. For example, a portion of the drive shaft 190 may protrude downward through the lower side of the motor housing.

[0320] The horizontal cross-section of the drive shaft 190 can be formed into a non-circular shape, thereby preventing relative rotation of the drive shaft 190 when it is connected to the rotating plates 420 and 440.

[0321] A sleeve 174 may be provided around the shaft hole 175 in the first housing 172. The sleeve 174 may protrude from the lower surface of the first housing 172.

[0322] The sleeve 174 can be formed in an annular shape, for example. Therefore, the sleeve 174 can be seated in a circular seat groove 116a.

[0323] In this state, drive motors 182 and 184 can be mounted on the first housing 172 and fixed to the first housing 172 by means of motor fixing unit 183.

[0324] Drive motors 182 and 184 can be formed in a cylindrical shape, and drive motors 182 and 184 can be seated in the first housing 172 when the axes of drive motors 182 and 184 are horizontal (when drive motors 182 and 184 are laid flat).

[0325] The motor mounting unit 183 may have a generally semi-circular cross-section and may cover the upper part of the drive motors 182 and 184 mounted on the first housing 172. The motor mounting unit 183 may be fixed to the first housing 172 by means of fastening members such as screws.

[0326] The second housing 173 may include a motor cover 173a that covers a portion of the drive motors 182 and 184.

[0327] For example, the motor cover 173a may be rounded to surround the motor mounting unit 183 from the outside of the motor mounting unit 183.

[0328] For example, the motor cover 173a can be formed in an inverted round shape, such that a portion of the second housing 173 protrudes upward.

[0329] Anti-rotation ribs 173c and 173d are formed on the surface of the motor cover 173a facing the motor fixing unit 183 to prevent relative rotation between the motor cover 173a and the motor fixing unit 183 during the operation of the drive motors 182 and 184, and a rib receiving slot 183a is formed in the motor fixing unit 183 to receive the anti-rotation ribs 173c and 173d.

[0330] Although there are no restrictions, the widths of the anti-rotation ribs 173c and 173d can be the same as the width of the rib receiving slot 183a.

[0331] Alternatively, a plurality of anti-rotation ribs 173c and 173d may be spaced apart from the motor cover 173a in the circumferential direction of the drive motors 182 and 184, and the plurality of anti-rotation ribs 173c and 173d may be received in the rib receiving slot 183a.

[0332] At this time, the maximum width of the multiple anti-rotation ribs 173c and 173d in the circumferential direction of the drive motors 182 and 184 can be equal to or slightly less than the width of the rib receiving slot 183a.

[0333] The transmission unit may include: a drive gear 185 connected to the shaft of each drive motor 182 and 184; and a plurality of transmission gears 186, 187, 188 and 189 for transmitting the rotational force of the drive gear 185.

[0334] The shafts of drive motors 182 and 184 (see) Figure 20 A3 and A4 in the diagram extend horizontally, while the rotation center lines of rotating plates 420 and 440 extend vertically. Therefore, the drive gear 185 can be, for example, a spiral bevel gear.

[0335] The plurality of transmission gears 186, 187, 188, and 189 may include a first transmission gear 186 that engages with a drive gear 185. The first transmission gear 186 may have a center of rotation extending in a vertical direction.

[0336] The first transmission gear 186 may include a spiral bevel gear, such that the first transmission gear 186 can engage with the drive gear 185.

[0337] The first transmission gear 186 may further include a helical gear arranged below the spiral bevel gear as a second gear.

[0338] The plurality of transmission gears 186, 187, 188 and 189 may further include a second transmission gear 187 that engages with the first transmission gear 186.

[0339] The second transmission gear 187 can be a two-stage helical gear. In other words, the second transmission gear 187 includes two vertically arranged helical gears, and the upper helical gear can be connected to the helical gear of the first transmission gear 186.

[0340] The plurality of transmission gears 186, 187, 188 and 189 may further include a third transmission gear 188 that engages with the second transmission gear 187.

[0341] The third transmission gear 188 can also be a two-stage helical gear. In other words, the third transmission gear 188 includes two vertically arranged helical gears, and the upper helical gear can be connected to the lower helical gear of the second transmission gear 187.

[0342] The plurality of transmission gears 186, 187, 188 and 189 may further include a fourth transmission gear 189 that engages with the lower helical gear of the third transmission gear 188. The fourth transmission gear 189 may be a helical gear.

[0343] The drive shaft 190 can be connected to the fourth drive gear 189. The drive shaft 190 can be connected to pass through the fourth drive gear 189. The drive shaft 190 can rotate together with the fourth drive gear 189.

[0344] Therefore, the upper bearing 191 is connected to the upper end of the drive shaft 190 that passes through the fourth drive gear 189, and the lower bearing 191a is connected to the drive shaft 190 on the lower side of the fourth drive gear 189.

[0345] Figure 19 This is a view showing the state in which the transmission unit is connected to the drive motor according to another embodiment of the present invention.

[0346] The rest of this embodiment is the same as the previous embodiment, but the construction of the transmission part is different. Therefore, only the characteristic parts of this embodiment will be described below.

[0347] refer to Figure 19 The transmission unit in this embodiment may include a drive gear 610 connected to the shafts of drive motors 182 and 184.

[0348] The drive gear 610 can be a worm gear. The axis of rotation of the drive gear 610 can extend in the horizontal direction. Because the drive gear 610 rotates together with its axis of rotation, the bearing 640 can be connected to the drive gear 610 for smooth rotation.

[0349] The first housing 600 may include: a motor support portion 602 for supporting drive motors 182 and 184; and a bearing support portion 604 for supporting bearing 640.

[0350] The transmission unit may further include a plurality of transmission gears 620, 624 and 628 for transmitting the rotational force of the drive gear 610 to the rotating plates 420 and 440.

[0351] The plurality of transmission gears 620, 624 and 628 may include a first transmission gear 620 that engages with the drive gear 610. The first transmission gear 620 may include an upper worm gear that engages with the drive gear 610.

[0352] Because the drive gear 610 and the first transmission gear 620 are engaged in the form of a worm gear, they have the advantage of reducing noise through friction during the transmission of the rotational force of the drive gear 610 to the first transmission gear 620.

[0353] The first transmission gear 620 may include a helical gear arranged on the lower side of the upper worm gear as a second gear.

[0354] The first transmission gear 620 can be rotatably connected to a first shaft 622 extending in the vertical direction. The first shaft 622 can be fixed to the first housing 600.

[0355] Therefore, the first transmission gear 620 can rotate relative to the fixed first shaft 622. According to this embodiment, since the first transmission gear 620 is configured to rotate relative to the first shaft 622, it has the advantage of not requiring bearings.

[0356] The plurality of transmission gears 620, 624 and 628 may further include a second transmission gear 624 that engages with the first transmission gear 620. The second transmission gear 624 is, for example, a helical gear.

[0357] The second transmission gear 624 can be rotatably connected to a second shaft 626 extending in the vertical direction. The second shaft 626 can be fixed to the first housing 600.

[0358] Therefore, the second transmission gear 624 can rotate relative to the fixed second shaft 626. According to this embodiment, because the second transmission gear 624 is configured to rotate relative to the second shaft 626, it has the advantage of not requiring bearings.

[0359] The plurality of transmission gears 620, 624 and 628 may further include a third transmission gear 628 that engages with the second transmission gear 624. The third transmission gear 628 is, for example, a helical gear.

[0360] The third transmission gear 628 can be connected to the transmission shaft 630, which is connected to the rotating plates 420 and 440. The transmission shaft 630 can be connected to the third transmission gear 628 and rotate together with the third transmission gear 628.

[0361] The bearing 632 can be connected to the drive shaft 630 to enable the drive shaft 630 to rotate smoothly.

[0362] <Arrangement of the drive unit in the nozzle base>

[0363] Figure 20 This is a plan view showing the state in which the drive device according to an embodiment of the present invention is mounted on the nozzle base, and Figure 21 This is a front view showing the state in which the drive device according to one embodiment of the present invention is mounted on the nozzle base.

[0364] In particular, Figure 20 The image shows the state where the second housing of the motor housing has been removed.

[0365] refer to Figure 20 and Figure 21 As described above, the drive units 170 and 171 can be arranged on the nozzle base 110 to be spaced apart from each other in the lateral direction.

[0366] The centerline A2 of the second flow path 114 can be located between the first drive unit 170 and the second drive unit 171. With this arrangement, the weight of each drive unit 170 and 171 can be evenly distributed to the left and right sides of the nozzle 1.

[0367] The axis A3 of the first drive motor 182 and the axis A4 of the second drive motor 184 can extend in the front-back direction, thereby preventing the height of the suction nozzle 1 from increasing due to the drive motor 182.

[0368] The axis A3 of the first drive motor 182 and the axis A4 of the second drive motor 184 can be parallel or arranged at a predetermined angle.

[0369] In this embodiment, an imaginary line A5 connecting the axis A3 of the first drive motor 182 and the axis A4 of the second drive motor 184 passes through the second flow path 114. This is because each of the drive motors 182 and 184 is positioned close to the rear side of the nozzle 1, thereby preventing the drive motors 182 and 184 from increasing the height of the nozzle 1.

[0370] Additionally, with the drive gears 185 and 185 connected to the shafts of each drive motor 182 and 184 such that the increase in the height of the nozzle 1 is minimized due to each drive unit 170 and 171, the drive gears 185 and 185 can be located between the drive motors 182 and 184 and the first flow path 112.

[0371] In this case, since the drive motors 182 and 184, which have the longest vertical lengths of drive units 170 and 171, are positioned as close to the rear side as possible in the nozzle body 10, the increase in height on the front end of the nozzle 1 can be minimized.

[0372] Because the drive units 170 and 171 are positioned close to the rear of the nozzle 1, and the water tank 200 is located above the drive units 170 and 171, the center of gravity of the nozzle 1 can be pulled towards the rear of the nozzle 1 due to the water in the water tank 200 and the weight of the drive units 170 and 171.

[0373] Therefore, in this embodiment, a connecting chamber for the water tank 200 is positioned between the first flow path 112 and the drive devices 170, 170 in the front-rear direction relative to the nozzle 1 (see...). Figure 6 (226).

[0374] Meanwhile, in this embodiment, the rotation centers C1 and C2 of the rotating plates 420 and 440 coincide with the rotation center of the transmission shaft 190.

[0375] The axes A3 and A4 of the drive motors 182 and 184 can be located in the area between the rotation centers C1 and C2 of the rotating plates 420 and 440.

[0376] Additionally, drive motors 182 and 184 can be located in the area between the rotation centers C1 and C2 of the rotating plates 420 and 440.

[0377] In addition, each of the drive motors 182 and 184 can be arranged to overlap with an imaginary line connecting the first rotation center C1 and the second rotation center C2 in the vertical direction.

[0378] <Rotating Plate>

[0379] Figure 22 This is a top view of a rotating plate according to an embodiment of the present invention, viewed from above. Figure 23 This is a bottom view of a rotating plate according to an embodiment of the present invention, viewed from below.

[0380] refer to Figure 22 and Figure 23 Each rotating plate 420 and 440 can be formed in a disc shape to prevent interference between them during rotation. A shaft connection unit 421 for connecting the drive shaft 190 can be provided at the central part of each rotating plate 420 and 440.

[0381] For example, the drive shaft 190 can be inserted into the shaft connection unit 421. For this purpose, the shaft connection unit 421 can be formed with a shaft receiving groove 422 for inserting the drive shaft 190.

[0382] The fastening member can be pulled into the shaft connection unit 421 from below the rotating plates 420 and 440, and the fastening member is fastened to the shaft connection unit 421 while the drive shaft 190 is connected to the shaft connection unit 421.

[0383] Rotating plates 420 and 440 may include a plurality of water passage holes 424 arranged in the radial direction outside the shaft connection unit 421.

[0384] In this embodiment, since the rotating plates 420 and 440 rotate with the mops 402 and 404 attached to the underside of the rotating plates 420 and 440, water is smoothly supplied to the mops 402 and 404 via the rotating plates 420 and 440, so that the plurality of water holes 424 can be circumferentially spaced around the shaft connecting unit 421.

[0385] Multiple water passages 424 can be defined by multiple ribs 425. In this case, each rib 425 can be positioned below the upper surface 420a of the rotating plates 420 and 440.

[0386] Because the rotating plates 420 and 440 rotate, centrifugal force acts on them. It is necessary to prevent water sprayed onto the rotating plates 420 and 440 from flowing radially outwards when the water cannot pass through the water passages 424 in the rotating plates 420 and 440 due to centrifugal force.

[0387] Therefore, water-blocking ribs 426 can be formed radially outward on the upper surface 420a of the rotating plates 420 and 440, around the water passage holes 424. The water-blocking ribs 426 can be formed continuously in the circumferential direction. In other words, multiple water passage holes 424 can be located within the inner region of the water-blocking ribs 426. For example, the water-blocking ribs 426 can be formed in the form of an annulus.

[0388] Mounting grooves 428 may be formed on the lower surface 420b of the rotating plates 420 and 440 to provide attachment devices for attaching mops 402 and 404. The attachment devices may be, for example, Velcro fasteners.

[0389] Multiple mounting slots 428 can be spaced circumferentially relative to the rotation centers C1 and C2 of the rotating plates 420 and 440. Therefore, multiple attachment devices can be provided on the lower surface 420b of the rotating plates 420 and 440.

[0390] In this embodiment, the mounting groove 428 can be arranged radially outside the water passage hole 424 relative to the rotation centers C1 and C2 of the rotating plates 420 and 440.

[0391] For example, water passage holes 424 and mounting grooves 428 can be arranged radially outward from the rotation centers C1 and C2 of rotating plates 420 and 440.

[0392] The lower surface 420b of the rotating plates 420 and 440 may be provided with a contact rib 430, which contacts the mop 402 or 404 when the mop 402 or 404 is attached to the attachment device.

[0393] The contact rib 430 can protrude downward from the lower surface 420b of the rotating plates 420 and 440.

[0394] The contact rib 430 is arranged radially outside the water passage 424 and can be continuously formed in the circumferential direction. For example, the contact rib 430 can be formed in an annular shape.

[0395] Because mops 402 and 404 themselves (e.g., as fibrous materials) can deform, gaps may exist between mops 402 and 404 and the lower surface 420b of rotating plates 420 and 440 when mops 402 and 404 are attached to rotating plates 420 and 440 by means of attachment devices.

[0396] When the gap between the mops 402 and 404 and the lower surface 420b of the rotating plates 420 and 440 is large, the concern is that water passing through the water hole 424 will not be absorbed onto the mops 402 and 404, but will instead flow to the outside through the gap between the lower surface 420b of the rotating plates 420 and 440 and the upper surface of the mops 402 and 404.

[0397] However, according to this embodiment, when mops 402 and 404 are connected to rotating plates 420 and 440, contact ribs 430 can contact mops 402 and 404, and suction nozzle 1 is placed on the floor. Contact ribs 430 press mops 402 and 404 with the load of suction nozzle 1.

[0398] Therefore, the contact rib 430 prevents the formation of a gap between the lower surface 420b of the rotating plates 420 and 440 and the upper surface of the mops 402 and 404, thereby enabling water to be smoothly supplied to the mops 402 and 404 through the water passage 424.

[0399] <Water Supply Flow Path>

[0400] Figure 24 This is a view illustrating the water supply path from the water tank to the rotating cleaning unit according to an embodiment of the present invention. Figure 25 This is a view showing a valve in a water tank according to an embodiment of the present invention, and Figure 26 This is a view showing the valve opening the outlet with the water tank installed on the nozzle housing.

[0401] Figure 27 This is a view showing the state in which the rotating plate is connected to the nozzle body according to an embodiment of the present invention, and Figure 28 This is a view showing the arrangement of nozzles in a suction body according to an embodiment of the present invention.

[0402] Figure 29 This is a conceptual diagram illustrating a process of supplying water from a water tank to a rotating cleaning unit according to an embodiment of the present invention.

[0403] refer to Figures 24 to 29 The water supply path of this embodiment includes: a first supply pipe 282 connected to the valve operation unit 144; a water pump 270 connected to the first supply pipe 282; and a second supply pipe 284 connected to the water pump 270.

[0404] The water pump 270 may include a first connection port 272 and a second connection port 274, with a first supply pipe 282 connected to the first connection port 272 and a second supply pipe 284 connected to the second connection port 274. Based on the water pump 270, the first connection port 272 is the inlet, and the second connection port 274 is the outlet.

[0405] Additionally, the water supply path may further include a connector 285 to which a second supply pipe 284 is connected.

[0406] The connector 285 can be configured such that the first connecting unit 285a, the second connecting unit 285b, and the third connecting unit 285c are arranged in a T-shape. The second supply tube 284 can be connected to the first connecting unit 285a.

[0407] The water supply path may further include: a first branch pipe 286 connected to the second connection unit 285b; and a second branch pipe 287 connected to the third connection unit 285c.

[0408] Therefore, the water flowing through the first branch pipe 286 can be supplied to the first rotating cleaning unit 40, and can also flow through the second branch pipe 287 to the second rotating cleaning unit 41.

[0409] The connector 285 can be positioned at the central portion of the nozzle body 10, such that each branch tube 286 and 287 has the same length.

[0410] For example, connector 285 can be located below flow path cover 136 and above flow path forming portion 150. In other words, connector 285 can be located directly above second flow path 114. Therefore, substantially the same amount of water can be distributed from connector 285 to each branch pipe 286 and 287.

[0411] In this embodiment, the water pump 270 may be located at a point on the water supply path.

[0412] At this time, the water pump 270 can be located between the valve operating unit 144 and the first connection unit 285a of the connector 285, so that water can be discharged from the water tank 200 using a minimum number of water pumps 270.

[0413] In this embodiment, the water pump 270 can be installed in the nozzle cover 130 with the water pump 270 positioned close to the valve operation unit 144.

[0414] For example, the valve operating unit 144 and the water pump 270 can be arranged on one side of the nozzle body 10 relative to the center line A2 of the second flow path 114.

[0415] Therefore, the length of the first supply pipe 282 can be reduced, and thus the length of the water supply path can be reduced.

[0416] Each of the branch pipes 286 and 287 can be connected to the nozzle 149. The nozzle 149 can also form the water supply path of the present invention.

[0417] Nozzle 149 may include connection unit 149a, which is connected to each branch pipe 286 and 287 as described above.

[0418] The nozzle 149 may further include a nozzle tip 149b. The nozzle tip 149b extends downward through the nozzle orifice 119. In other words, the nozzle tip 149b may be disposed outside the nozzle housing 100.

[0419] When the nozzle tip 149b is located outside the nozzle housing 100, it is possible to prevent water sprayed through the nozzle tip 149b from being drawn into the nozzle housing 100.

[0420] At this time, in order to prevent damage to the nozzle tip 149b exposed to the outside of the nozzle housing 100, an upwardly recessed groove 119a is formed in the bottom of the nozzle base 110, and the nozzle tip 149b can be positioned in the groove 119a while passing through the nozzle hole 119. In other words, the nozzle hole 119 can be formed in the groove 119a.

[0421] The nozzle tip 149b can be arranged to face the rotating plates 420 and 440 in the groove 119a.

[0422] Therefore, water sprayed from the nozzle tip 149b can pass through the water passage 424 of the rotating plates 420 and 440.

[0423] The line that vertically connects the first rotation center C1 and the center line A1 of the first flow path 112 can be called the first connecting line A6, and the line that vertically connects the second rotation center C2 and the center line A1 of the first flow path 112 can be called the second connecting line A7.

[0424] At this time, the first connecting line A6 and the second connecting line A7 can be located in the area between a pair of nozzles 149 used to supply water to each of the rotating cleaning units 40 and 41.

[0425] This is because there are components constituting the drive devices 170 and 171 in the area between the first connecting line A6 and the second connecting line A7, so the nozzle 149 is arranged to prevent interference with these components.

[0426] In addition, the horizontal distance between the nozzle 149 and the center line A1 of the first flow path 112 is shorter than the horizontal distance between each rotation center C1 and C2 and the center line A1 of the first flow path 112.

[0427] Meanwhile, valve 230 may include a movable unit 234, an opening and closing unit 238, and a fixed unit 232.

[0428] The fixing unit 232 can be fixed to the fixing rib 217 that protrudes upward from the first body 210 of the water tank 200.

[0429] The fixed unit 232 may have an opening 232a through which the movable unit 234 passes.

[0430] With the fixed unit 232 connected to the fixed rib 217, the fixed unit 232 restricts the movable unit 234 from moving upward from the fixed unit 232 to a predetermined height.

[0431] The movable unit 234 can move vertically with a portion of it passing through the opening 232a. Water can pass through the opening 232a when the movable unit 234 is moving upwards.

[0432] The movable unit 234 may include: a first extension portion 234a that extends downward and is connected to the opening / closing unit 238; and a second extension portion 234b that extends upward and passes through the opening 232a.

[0433] The movable unit 234 can be elastically supported by the elastic member 236. For example, one end of the elastic member 263, which is a coil spring, can be supported by the fixed unit 232, while the other end can be supported by the movable unit 234.

[0434] The elastic member 236 provides a force to the movable unit 234 to move the movable unit 234 downward.

[0435] The opening and closing unit 238 can selectively open the outlet 216 by moving the movable unit 234 up and down.

[0436] At least a portion of the diameter of the opening and closing unit 238 may be larger than the diameter of the outlet 216, thereby the opening and closing unit 238 may block the outlet 216.

[0437] The opening and closing unit 238 can be formed of, for example, a rubber material, thereby preventing water leakage when the opening and closing unit 238 blocks the outlet 216.

[0438] The elastic force of the elastic member 236 is applied to the movable unit 234, so that the opening and closing unit 238 can maintain the state of blocking the outlet 216 unless an external force is applied to the movable unit 234.

[0439] During the process of placing the water tank 200 onto the suction nozzle body 10, the movable unit 234 can be moved by means of the valve operating unit 144.

[0440] As described above, the valve operating unit 144 is connected to the nozzle cover 130 from below. A water inlet 145 may be formed in the nozzle cover 130, through which water discharged from the water tank 200 passes.

[0441] The valve operating unit 144 may include a pressing portion 144a passing through the water inlet 145. The pressing portion 144a may protrude upward from the bottom of the nozzle cover 130 while passing through the water inlet 145 of the nozzle cover 130.

[0442] The valve operating unit 144 can form a water supply path together with the bottom of the suction nozzle cover 130. The connecting pipe 144c for connecting the first supply pipe 282 can be provided on one side of the valve operating unit 144.

[0443] The diameter of the water inlet 145 can be larger than the outer diameter of the pressing part 144a, so that water can flow smoothly when the pressing part 144a passes through the water inlet 145.

[0444] When the water tank 200 is placed on the nozzle body 10, the pressing part 144a is pulled into the outlet 216 of the water tank 200. During the process of the pressing part 144a being pulled into the outlet 216 of the water tank 200, the pressing part 144a presses the movable unit 234.

[0445] The movable unit 234 is lifted, and the opening / closing unit 238 connected to the movable unit 234 moves upward together with the movable unit 234 to separate from the outlet 216, thereby opening the outlet 216.

[0446] Water in the water tank 200 is discharged through the outlet 216, flows along the valve operating unit 144 through the water inlet 145, and is then supplied to the first supply pipe 282 connected to the connecting pipe 144c.

[0447] Water supplied to the first supply pipe 282 flows into the second supply pipe 284 after being pumped into the water pump 270. Water flowing into the second supply pipe 284 flows to the first branch pipe 286 and the second branch pipe 287 via connector 285. Water flowing into each of the branch pipes 286 and 287 is sprayed from nozzle 149 toward the rotating cleaning units 40 and 41.

[0448] Water sprayed from nozzle 149 is supplied to mops 402 and 404 after passing through water holes 424 in rotating plates 420 and 440. Mops 402 and 404 rotate while absorbing the supplied water to wipe the floor.

[0449] Figure 30 This is a perspective view showing a suction nozzle for a cleaner, separated from the connecting tube according to an embodiment of the invention, as viewed from the rear. Figure 31 It is shown Figure 30 A sectional view of area 'A' in the diagram, and Figure 32 It is shown Figure 31 A 3D diagram of the washer.

[0450] refer to Figures 30 to 32 The water tank 200 may have at least one vent 219 for introducing external air. In the following text, for example, one vent 219 is formed in the water tank 200, but multiple vents 219 may be provided.

[0451] The vent 219 can be formed on one side of the water tank 200.

[0452] In detail, the washer 290 can be press-fitted into the vent 219.

[0453] Gasket 290 can guide outside air into the internal space of water tank 200.

[0454] Gasket 290 can be called a check valve because outside air flows into water tank 200, while the water in water tank 200 is interrupted and thus not discharged to the outside.

[0455] Washer 290 can be formed from a material that deforms under external force. For example, washer 290 can be formed from polyethylene material, but is not limited to this.

[0456] Washer 290 may include, for example, a cylinder 293.

[0457] One end of the main body 293 can be received inside the water tank 200 via the vent 219. The other end of the main body 293 can be exposed outside the water tank 200.

[0458] At least one sealing protrusion 294 and 295 may be formed on the outer side of the body 293. The outer diameter of the sealing protrusion 294 and 295 may be larger than the inner diameter of the vent 219. When the sealing protrusion 294 and 295 are formed as described above, leakage between the body 293 and the vent 219 can be prevented.

[0459] In the case where multiple sealing protrusions 294 and 295 are formed, a portion of the sealing protrusions 294 and 295 may be located inside the water tank 200.

[0460] At the other end of the body 293, a flange 292 may be formed with an outer diameter larger than that of the body 293 and the sealing protrusions 294 and 295. The diameter of the flange 292 is larger than that of the vent 219. The flange 292 is used to prevent the entire gasket 290 from entering the interior of the water tank 200.

[0461] Additionally, the gasket 290 may have an airflow path 291 through which air flows in its central portion, and a slit 297 may be formed at the other end of the gasket 290. In this case, the other end of the gasket 290 may come into contact with the water in the water tank 200.

[0462] In addition, in order to block the slit 297 formed at the other end of the washer 290 by the pressure of water, the washer 290 is formed such that the cross-sectional area of ​​the washer 290 decreases from one point to the other end, so that an inclined surface 296 can be formed on the outside.

[0463] In detail, the inclined surface 296 can be formed on both sides of the slit 297.

[0464] According to one embodiment, water pressure is applied to an inclined surface 296 formed at the other end of the washer 290, so the other end of the washer 290 contracts inward. During this process, the slit 297 is blocked without the internal pressure of the water tank 200 decreasing (without water being discharged).

[0465] Therefore, water in the water tank 200 is prevented from leaking to the outside through the slit 297.

[0466] In addition, the slit 297 is blocked by the water pressure of the water tank 200, so that air is not supplied to the interior of the water tank 200 through the slit 297 when no external force is applied to the gasket 290.

[0467] At the same time, when the internal pressure of the water tank 200 is reduced (in the state of water discharge), external air can be supplied to the water tank 200 through the gasket 290.

[0468] Specifically, when the pump motor 280 operates, the water in the water tank 200 is discharged through the outlet 216 by the water pump 270. As a result, the internal pressure of the water tank 200 drops instantaneously.

[0469] In addition, as the pressure applied to the inclined surface 296 of the washer 290 is reduced, the other end of the washer 290 returns to its initial state and is able to open the slit 297.

[0470] As described above, when the slit 297 is open, outside air can be supplied to the water tank 200 through the slit 297.

[0471] When the slit 297 is open, the surface tension of the water around the slit 297 and the force that allows external air to flow are greater than the water pressure in the water tank 200, so that water does not drain out of the water tank 200 through the slit 297.

[0472] According to this embodiment, when the water pump 270 is not in operation, it is possible to prevent water in the water tank 200 from being discharged to the outside through the gasket 290.

[0473] In addition, when the water pump 270 is in operation, air can be introduced into the water tank 200 through the slit 297 of the washer 290, so the water in the water tank 200 can be stably supplied to the mops 402 and 404.

Claims

1. A suction nozzle for a cleaner, the suction nozzle comprising: A nozzle body, the nozzle body including a suction flow path for drawing air, the suction flow path extending in the front-rear direction relative to the nozzle body; A first rotating cleaning unit and a second rotating cleaning unit are arranged on the underside of the nozzle body and spaced apart from each other in the lateral direction. Each of the first rotating cleaning unit and the second rotating cleaning unit includes a rotating plate configured to support a mop. Multiple drive units are arranged in the nozzle body to be spaced apart from the suction flow path in two lateral directions and to transmit power to the first rotary cleaning unit and the second rotary cleaning unit; A water tank is connected to the upper part of the suction nozzle body, thereby covering both the plurality of drive units and the suction flow path, the water tank being configured to store water to be supplied to each of the first rotary cleaning unit and the second rotary cleaning unit; as well as A water supply path is formed in the nozzle body and configured to supply water from the water tank to each of the first and second rotary cleaning units. The water supply path is configured to allow water to fall onto the upper surface of the rotating plate, which is separated from the plurality of drive units, which are located at positions spaced apart on both sides of the suction path.

2. The suction nozzle according to claim 1, wherein, The plurality of drive units include: A first drive motor, configured to drive the first rotary cleaning unit, is positioned spaced apart from one side of the suction flow path; and A second drive motor is configured to drive the second rotating cleaning unit and is positioned spaced apart from the other side of the suction flow path.

3. The suction nozzle according to claim 2, wherein, The suction flow path includes: A first flow path extends along the lateral direction at the front end portion of the nozzle body; and A second flow path extends along the front-to-back direction at the central portion of the first flow path. The first drive motor and the second drive motor are located behind the first flow path, and the second flow path is located between the first drive motor and the second drive motor.

4. The suction nozzle according to claim 3, wherein, The plurality of drive units further include drive gears that are connected to and rotate with the shaft of the first drive motor or the second drive motor, and The drive gear is disposed between the first flow path and each of the first drive motor and the second drive motor.

5. The suction nozzle according to claim 3, wherein, Each of the first drive motor and the second drive motor is located in the region between the rotation center of each of the rotating plates and the center line of the second flow path.

6. The suction nozzle according to claim 3, wherein, With the water tank installed on the nozzle housing, the axes of each of the first and second drive motors are positioned above at least a portion of the bottom wall of the water tank.

7. The suction nozzle according to claim 3, wherein, The nozzle housing includes: A nozzle base on which the plurality of drive units are mounted; and A nozzle cover is attached to the upper side of the nozzle base and covers the plurality of drive units.

8. The suction nozzle according to claim 3, wherein, The central axis, which divides the front and rear length of the nozzle body into two equal parts, is positioned closer to the rotation center of each of the first and second rotary cleaning units than the first flow path.

9. The suction nozzle according to claim 3, in, Each of the first drive motor and the second drive motor is configured such that the axis of the first drive motor and the axis of the second drive motor each extend in the front-rear direction.

10. The suction nozzle according to claim 9, wherein, An imaginary line connecting the axis of the first drive motor and the axis of the second drive motor passes through the second flow path.

11. The suction nozzle according to claim 3, in, The nozzle body includes a nozzle housing configured to receive each of the first drive motor and the second drive motor. The suction nozzle housing includes a drive unit cover that protrudes upward and covers the first drive motor and the second drive motor respectively. When the water tank is installed on the nozzle body, a portion of the water tank surrounds the periphery of the drive unit.

12. The suction nozzle according to claim 3, wherein, The nozzle housing includes: A nozzle base, wherein each of the first drive motor and the second drive motor is mounted on the nozzle base; and A nozzle cover, the nozzle cover being coupled to the nozzle base to cover each of the first drive motor and the second drive motor and including a cover for each of the drive units, and The water tank includes a recessed receiving space configured to receive each of the drive unit covers.

13. The suction nozzle according to claim 3, wherein, The nozzle cap also includes a flow path cap that covers the second flow path, and The water tank includes a groove for positioning the flow path cover.

14. The suction nozzle according to claim 13, wherein, A portion of the water tank is positioned on both sides of the flow path cover.

15. The suction nozzle according to claim 3, wherein, The water tank includes: The first chamber is located above the first drive motor; The second chamber, located above the second drive motor; and A connecting chamber that connects the first chamber and the second chamber in the region between the first flow path and each of the first drive motor and the second drive motor.

16. The suction nozzle according to claim 1, wherein, The mop is attached to the underside of each of the rotating plates, and each of the rotating plates is provided with a plurality of water passages to allow water discharged from the water supply path to pass through.

Images