cleaner

Abstract

The present invention relates to a cleaner. The vacuum cleaner nozzle of the present invention comprises: a nozzle body provided with a suction passage for suction of air; a rotary cleaning unit rotatably provided at the bottom of the nozzle body and each provided with a rotary plate to which a cloth can be attached; a driver provided in the nozzle body and provided with a driving motor for driving the rotary cleaning unit; a water tank releasably mounted at the top of the nozzle body and storing water to be supplied to the rotary cleaning unit; a water supply passage provided in the nozzle body and communicating with the water tank and supplying water in the water tank to the rotary cleaning unit; and a water control unit for controlling the on / off and rpm of the pump motor and mounted in the nozzle body such that the water control unit is at least partially exposed through the rear surface or the upper surface of the nozzle body so as to be manipulated by a user standing on the same ground surface as the nozzle body with his / her foot from the back of the nozzle body.

Description

[0001] This invention is a divisional application of the invention patent application with application number 201980049026.6 (international application number: PCT / KR2019 / 009414, application date: July 29, 2019, invention title: vacuum 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 washes away dust or foreign objects from an area to be cleaned in order to perform cleaning.

[0004] Cleaners can be categorized into manual cleaners, which are moved by the user to perform cleaning, and automatic cleaners, which are moved automatically to perform cleaning.

[0005] Depending on the type, manual cleaners can be categorized into canister cleaners, upright cleaners, handheld cleaners, and stick cleaners.

[0006] Such cleaners use nozzles to clean floor surfaces. Typically, the nozzles can be used to vacuum air and dust. Depending on the type of nozzle, a mop can be attached to the nozzle to clean the floor with that mop.

[0007] A suction port assembly for a vacuum cleaner is disclosed in Korean Patent Registration No. 10-0405244, which is related technical document 1.

[0008] The suction port assembly disclosed in related technical document 1 includes a suction port body having a suction port provided thereon.

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

[0010] In addition, the mop is rotatably mounted on the lower end of the suction port body, and the rotation drive unit for driving the mop is located inside 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] However, according to relevant technical document 1, since the pair of rotating bodies on both sides are rotated by using a single rotating motor, if the rotating motor fails or malfunctions, all of the pair of rotating bodies may not rotate.

[0013] Furthermore, since the suction port body is located in the central part, the pair of rotating bodies are rotated using a single rotary motor. Therefore, it is necessary to design a suction path that does not interfere with the rotary motor. As a result, the suction path can be lengthened, and the structure used to form the suction path becomes more complex.

[0014] In addition, in related technical document 1, since no structure is provided for supplying water to the mop, the user must supply water directly to the mop when performing cleaning by using a mop that holds water.

[0015] A cleaner is disclosed in Korean Patent Publication No. 10-2017-0028765, which is related technical document 2.

[0016] The cleaner disclosed in related technical document 2 includes: a cleaner body on which a mop is rotatably mounted; a handle connected to the cleaner body or a water tank mounted on the cleaner body; a water spray nozzle configured to spray water onto the front surface of the cleaner body; and a water supply unit that supplies water from the water tank to the water spray nozzle.

[0017] In the case of relevant technical document 2, since the water spray nozzle sprays water onto the front surface of the cleaner body, the sprayed water can replace the mop to wet other peripheral structures.

[0018] In addition, because the water spray nozzle is located in the center of the cleaner body, but the mop is arranged horizontally, the water sprayed onto the front surface of the cleaner body is not fully absorbed by the mop.

[0019] In addition, in the case of related technical document 2, since no passage for air extraction is provided, the cleaner can only wipe the floor surface, but the foreign objects present on the floor surface must be manually cleaned by the user again.

[0020] A wet cloth cleaner is disclosed in Korean Patent Registration No. 10-1710408, which is related technical document 3.

[0021] The cleaner disclosed in related technical document 3 includes: a handle portion having a power button and an injection button on one side; a main body portion configured at a predetermined angle relative to the handle portion; a head portion hinged to the main body portion to allow for angle adjustment; and a mop attached to the bottom surface of the head portion. Here, when the user pushes the button on the handle, a water pump is activated to supply water from the water tank to the head portion with the mop attached.

[0022] In the case of related technical document 3 as described above, since the button must be pushed while the user is holding the handle, all operations can be performed by the user's hand, and therefore, the user's hand fatigue may increase.

[0023] Furthermore, in the case of related technical document 3, when the user pushes the button, the water pump is driven at a constant rate and a certain amount of water is discharged from the water tank. Therefore, it is also inconvenient for the user to operate the button several times to increase the water volume. Summary of the Invention

[0024] Technical issues

[0025] One embodiment provides a suction nozzle for a cleaner that can suck up foreign objects from a floor surface, clean the floor by rotating a cloth, and supply water to the cloth.

[0026] The embodiment also provides a suction nozzle for a cleaner, wherein water from a water tank is stably supplied to the rotating cleaning section during the cleaning process.

[0027] The embodiment also provides a nozzle for a cleaner, wherein water discharged through the water supply passage is prevented from being introduced into the nozzle body.

[0028] The embodiment also provides a suction nozzle for a cleaner, wherein the length of the water supply passage for supplying water from the water tank to the rotating cleaning section is minimized.

[0029] The implementation also provides a suction nozzle for a cleaner, wherein leakage of water discharged from the water tank is minimized.

[0030] The embodiment also provides a suction nozzle for a cleaner, wherein the same amount of water is supplied to each of the rotating cleaning sections.

[0031] The embodiment also provides a suction nozzle for a cleaner that allows for easy adjustment of the amount of water supplied to the cloth per unit time by using the user's hand or foot during the cleaning process.

[0032] The embodiment also provides a suction nozzle for a cleaner that can supply water from a water tank to a rag or cut off the water supply to the rag by simple manipulation of the user's hand or foot during the cleaning process.

[0033] Technical solution

[0034] In one embodiment, a cleaner nozzle includes: a nozzle body having a suction passage configured to draw in air; a rotating cleaning section rotatably disposed below the nozzle body and having a rotating plate with a cloth attached thereto; and a drive device disposed in the nozzle body and including a drive motor configured to drive the rotating cleaning section.

[0035] The nozzle for the cleaner may include: a water tank, which is separately mounted on the upper part of the nozzle body and configured to store water to be supplied to the rotating cleaning unit; and a water supply passage disposed in the nozzle body and configured to communicate with the water tank, the water supply passage being configured to supply water from the water tank to the rotating cleaning unit.

[0036] The water tank can be detachably connected to the nozzle body.

[0037] The rag can be attached to the lower part of the rotating plate, and multiple water holes through which water discharged from the water supply passage can be defined in the rotating plate.

[0038] Multiple water inlets can be arranged to be spaced apart from each other in the circumferential direction relative to the rotation center of the rotating plate, so that water is stably supplied to the rotating cleaning section.

[0039] The injection nozzle can be set at the end of the water supply passage, and the nozzle end of the injection nozzle can be set to face the rotating plate.

[0040] The nozzle body may include a nozzle housing that houses the drive mechanism. The nozzle tip of the injection nozzle may pass through the lower part of the nozzle housing so as to be exposed to the outside of the nozzle housing, thereby preventing water discharged from the injection nozzle from being introduced into the nozzle housing.

[0041] The nozzle housing may include a recessed groove having a concave shape such that a nozzle end exposed to the outside of the nozzle housing is disposed therein, and a nozzle orifice through which the nozzle end passes may be defined in the groove.

[0042] The water tank may include: a water tank body, which includes a chamber for storing water and a drain hole for discharging water; and a valve, which includes a switching part for opening and closing the drain hole in the water tank body.

[0043] The nozzle body may include a valve operating part that operates a switching part to allow the switching part to open the discharge port while the water tank is mounted on the nozzle body.

[0044] The water supply passage can be connected to the valve operating unit to supply water discharged through the drain hole to the rotating cleaning unit.

[0045] The water supply path may include: a water pump that controls the water discharged from the water tank; and a pump motor that drives the water pump.

[0046] The rotating cleaning unit may include a first rotating cleaning unit and a second rotating cleaning unit arranged in a horizontal direction, and the driving device may include: a first driving device that drives the first rotating cleaning unit; and a second driving device that drives the second rotating cleaning unit.

[0047] 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 to supply water to a first rotating cleaning unit; and a second branch pipe connected to the connector to supply water to a second rotating cleaning unit.

[0048] The injection nozzle can be located in each of the first branch pipe and the second branch pipe, and the nozzle tip of the injection nozzle can be positioned to face each of the rotating cleaning sections.

[0049] The nozzle tip of the injection nozzle can be set to face the rotating plate.

[0050] The supply pipe may include: a first supply pipe connected to the inlet of the water pump; and a second supply pipe connected to the outlet and connector of the water pump.

[0051] The connector may include: a first connecting portion connected to a second supply pipe; a second connecting portion connected to a first branch pipe; and a second connecting portion connected to a second branch pipe.

[0052] The suction passage may include: a first passage that extends horizontally from the front end of the nozzle body; and a second passage that extends from the center portion of the first passage in a front-back direction.

[0053] The second passage can divide the nozzle body into a left and a right section, and the discharge port and water pump can be located on one side of the second passage.

[0054] The nozzle body may also include a passage forming portion that provides a second passage, and a connector may be disposed above the passage forming portion such that water is evenly distributed from the connector to each branch pipe.

[0055] The nozzle for the cleaner may include a water adjustment unit mounted on the nozzle body, with at least a portion of the water adjustment unit exposed at the rear of the nozzle body through the rear or top surface of the nozzle body, thereby enabling a user standing on the same floor surface as the nozzle body to manipulate the water adjustment unit by using the user's feet. The water adjustment unit is configured to adjust the on / off operation and rotational speed (rpm) of the pump motor.

[0056] The water adjustment unit may include a water adjustment switch disposed outside the nozzle body to receive pressure applied by the user's hand or foot in the back-and-forth direction.

[0057] The water regulating switch is rotatable relative to a vertical central axis and may include: a first push part disposed on one side of the water regulating switch to receive a pressing force applied by a user pressing forward; and a second push part integrated with the first push part and disposed on the other side of the water regulating switch to receive a pressing force applied by a user pressing forward.

[0058] The pump motor can rotate at a first rotational speed (rpm) when the first push part is pressed, and rotate at a second rotational speed (rpm) greater than the first rotational speed (rpm) when the second push part is pressed.

[0059] With the first and second push parts not pressed, the water regulating switch can be set in the center and the pump motor can be turned off.

[0060] The water regulating unit may include a control board disposed inside the nozzle body between the water regulating switch and the pump motor.

[0061] The control board may include: a first element that receives a pressing force applied to a first push portion to transmit a drive signal to a pump motor; and a second element that receives a pressing force applied to a second push portion to transmit a drive signal to a pump motor.

[0062] The water adjustment unit may include a water adjustment rod disposed outside the nozzle body to receive vertical pressure applied by the user's hand or foot.

[0063] The water regulating rod can rotate vertically relative to the horizontal central axis.

[0064] The water regulating rod can rotate vertically around the central axis in the front-to-back direction.

[0065] The water regulating rod can protrude backward, and the top and bottom surfaces of the water regulating rod can provide a flat surface.

[0066] The pump motor can operate in the first mode when the water regulating rod is pressed down, and in the second mode when the water regulating rod is raised.

[0067] With the water regulating rod set to the center, the pump motor can be stopped or operated in the third mode.

[0068] The water adjustment unit may include a touch button located on the outside of the nozzle body, allowing the user to input water adjustment commands by touch using their hand or foot.

[0069] The water regulating unit may include a display unit that emits light toward the rear of the suction nozzle body to display various states of the pump motor to the outside.

[0070] Beneficial effects

[0071] According to the proposed implementation, a channel for sucking up foreign objects from the floor can be provided, and in addition, a rotating plate with a rag attached can rotate to clean the floor, thereby improving cleaning performance.

[0072] Additionally, the water tank can be installed on the nozzle to supply water to the rag, thereby improving user convenience.

[0073] According to an embodiment, the injection nozzle connected to the end of the water supply passage can be exposed outside the suction nozzle housing to prevent water injected from the injection nozzle from being introduced into the suction nozzle housing.

[0074] According to one embodiment, a drain hole can be defined in the water tank, and water can be supplied to each of the multiple rotating cleaning sections through a branch of the water supply passage, thereby minimizing the amount of water leakage.

[0075] According to the implementation method, the discharge port and the water pump can be located on one side of the second passage of the suction passage to minimize the length of the water supply passage.

[0076] According to one embodiment, the connector connected to the branch pipe can be positioned above the second passage to supply substantially the same amount of water to the rotating cleaning unit.

[0077] According to the implementation method, the amount of water supplied to the rag per unit time can be easily adjusted by using the user's hands or feet during the cleaning process.

[0078] According to the implementation method, water from the tank can be supplied to the rag or the water supply to the rag can be cut off by simple manipulation of the user's hands or feet during the cleaning process.

[0079] According to the implementation method, users can visually confirm the amount of water to be supplied to the rag to improve user convenience. Attached Figure Description

[0080] Figure 1 and Figure 2 This is a perspective view illustrating a suction nozzle for a cleaner according to one embodiment.

[0081] Figure 3 This is a bottom view illustrating a suction nozzle for a cleaner according to one embodiment.

[0082] Figure 4 This illustrates what it looks like when viewed from the rear. Figure 1 A 3D view of a suction nozzle used in a cleaner.

[0083] Figure 5 This illustrates what it looks like when viewed from the top of the mouthpiece body. Figure 4A view of the various operating states of the water regulating switch.

[0084] Figure 6 This is a perspective view illustrating the state in which the water adjustment rod is mounted on the rear surface of the nozzle body when viewed from the rear side.

[0085] Figure 7 This illustrates the effect when viewed from the side of the mouthpiece body. Figure 6 A view of the various operating states of the water regulating lever.

[0086] Figure 8 This is a perspective view illustrating a modified example of a water adjustment rod mounted on the rear surface of the nozzle body when viewed from the rear side.

[0087] Figure 9 This illustrates what it looks like when viewed from the rear of the nozzle body. Figure 8 A view of the various operating states of the water regulating lever.

[0088] Figure 10 It is along Figure 1 A cross-sectional view taken by line AA.

[0089] Figure 11 and Figure 12 This is an exploded perspective view of a suction nozzle according to one embodiment.

[0090] Figure 13 and Figure 14 This is a perspective view of a water tank according to one embodiment.

[0091] Figure 15 This is a perspective view of the nozzle cover when viewed from above, according to one embodiment.

[0092] Figure 16 This is a perspective view of the nozzle cover when viewed from below, according to one embodiment.

[0093] Figure 17 This is a view illustrating the state in which the passage forming part is connected to the nozzle base according to one embodiment.

[0094] Figure 18 This is a view of the nozzle base as viewed from below, according to one embodiment.

[0095] Figure 19 This is a view of multiple switches mounted on a control board according to one embodiment.

[0096] Figure 20 This is a view of the first drive unit and the second drive unit as viewed from below, according to one embodiment.

[0097] Figure 21This is a view of the first drive unit and the second drive unit as viewed from above, according to one embodiment.

[0098] Figure 22 This is a view illustrating the motor housing and the structure used to prevent the drive motor from rotating.

[0099] Figure 23 This is a view illustrating the state in which the power transmission unit is connected to the drive motor according to one embodiment.

[0100] Figure 24 This is a view illustrating the state in which the power transmission unit is connected to the drive motor according to another embodiment.

[0101] Figure 25 This is a plan view illustrating the state in which a drive device according to one embodiment is mounted on a nozzle base.

[0102] Figure 26 This is a front view illustrating the state in which a drive device according to one embodiment is mounted on a nozzle base.

[0103] Figure 27 This is a view of the rotating plate when viewed from above, according to one embodiment.

[0104] Figure 28 This is a view of the rotating plate when viewed from below, according to one embodiment.

[0105] Figure 29 This is a view of a water supply passage for supplying water from a water tank to a rotating cleaning unit according to one embodiment.

[0106] Figure 30 This is a view of a valve inside a water tank according to one embodiment.

[0107] Figure 31 This is a view illustrating the state in which the valve is installed on the nozzle housing and the discharge port is open.

[0108] Figure 32 This is a view illustrating the state in which a rotating plate is connected to the nozzle body according to one embodiment.

[0109] Figure 33 This is a view illustrating the arrangement of injection nozzles in a suction body according to one embodiment.

[0110] Figure 34 This is a conceptual view illustrating a process of supplying water from a water tank to a rotating cleaning unit according to one embodiment. Detailed Implementation

[0111] In the following description, some embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that when components in the drawings are designated by reference numerals, these components will, as far as possible, have the same reference numerals even if the same components are illustrated in different drawings. Furthermore, in the description of embodiments of the present disclosure, detailed descriptions will be omitted when it is determined that a detailed description of a well-known configuration or function would interfere with the understanding of the embodiments of the present disclosure.

[0112] Furthermore, in the description of embodiments of this disclosure, terms such as first, second, A, B, (a), and (b) may be used. Each of these terms is used merely to distinguish the corresponding component from other components, without defining the nature, order, or sequence of the corresponding components. It should be understood that when a component is "connected," "joined," or "engaged" to another component, the former may be directly connected or engaged to the latter, or may be "connected," "joined," or "engaged" to the other component using a third component inserted therebetween.

[0113] Figure 1 and Figure 2 This is a perspective view illustrating the suction nozzle of a cleaner according to one embodiment. Figure 3 This is a bottom view illustrating the suction nozzle of a cleaner according to one embodiment. Figure 4 This illustrates what it looks like when viewed from the rear. Figure 1 A 3D diagram of the cleaner's nozzle, and Figure 10 It is along Figure 1 A cross-sectional view taken by line AA.

[0114] refer to Figures 1 to 4 and Figure 10 According to one embodiment, the nozzle 1 of the cleaner (hereinafter referred to as the "nozzle") may include a nozzle body 10 and a connecting tube 50 movably connected to the nozzle body 10.

[0115] The nozzle according to this embodiment can be used to connect to, for example, a handheld cleaner or a canister cleaner.

[0116] The nozzle 1 can have a battery to supply power to the power-consuming part or can receive power from the cleaner to operate.

[0117] Since the cleaner connected to the nozzle 1 includes a suction motor, the suction force generated by the suction motor can act on the nozzle 1 to suck up foreign objects and air from the floor surface through the nozzle 1.

[0118] Therefore, in this embodiment, the suction nozzle 1 can draw in foreign objects and air to guide the drawn-in foreign objects and air to the cleaner.

[0119] Although unrestricted, the connecting tube 50 can be connected to the central portion of the rear side of the nozzle body 10 to guide the drawn air to the cleaner.

[0120] The nozzle 1 may also include rotating cleaning parts 40 and 41 that are rotatably disposed below the nozzle body 10.

[0121] For example, the pair of rotating cleaning parts 40 and 41 can be arranged in a horizontal direction. The pair of rotating cleaning parts 40 and 41 can rotate independently. For example, the nozzle 1 may include a first rotating cleaning part 40 and a second rotating cleaning part 41.

[0122] Each of the rotating cleaning units 40 and 41 may include cloths 402 and 404. Each of cloths 402 and 404 may have, for example, a circular plate shape. Cloths 402 and 404 may include a first cloth 402 and a second cloth 404.

[0123] The nozzle body 10 may include a nozzle housing 100 defining its appearance. The nozzle housing 100 may provide suction passages 112 and 114 for drawing air.

[0124] The suction passages 112 and 114 may include a first passage 112 extending horizontally from the nozzle housing 100 and a second passage 114 communicating with the first passage 112 to extend in a front-back direction.

[0125] For example, the first passage 112 can be disposed in the front part of the bottom surface of the nozzle housing 100.

[0126] The second passage 114 may extend rearward from the first passage 112. For example, the second passage 114 may extend rearward from the central portion of the first passage 112 to the connecting tube 50.

[0127] Therefore, the center line A1 of the first passage 112 can extend horizontally. In addition, the center line A2 of the second passage 114 can extend in the front-back direction to intersect the center line A1 of the first passage 112.

[0128] For example, the center line A2 of the second passage 114 can be set at the point where the mouthpiece body 10 is divided into two parts.

[0129] With the rotating cleaning parts 40 and 41 connected to the lower part of the nozzle body 10, some of the cloths 402 and 404 can protrude to the outside of the nozzle 1 to clean the floor surface located directly below the nozzle 1 and the floor surface located outside the nozzle 1.

[0130] For example, cloths 402 and 404 can protrude to the back and sides of nozzle 1.

[0131] For example, the rotating cleaning sections 40 and 41 can be disposed below the nozzle body 10 on the rear side of the first passage 112.

[0132] Therefore, when the nozzle 1 is moved forward to perform cleaning, foreign objects and air on the floor surface can be sucked up by the first passage 112, and thus the floor surface can be cleaned by the cloths 402 and 404.

[0133] In this embodiment, the first rotation center C1 of the first rotating cleaning part 40 (e.g., the rotation center of the rotating plate 420) and the second rotation center C2 of the second rotating cleaning part 41 (e.g., the rotation center of the rotating plate 440) can be set to be spaced apart from each other in the horizontal direction.

[0134] The centerline A2 of the second path 114 can be set between the first rotation center C1 and the second rotation center C2.

[0135] The central axis Y, which divides the front-to-back length L1 (excluding the extension) of the nozzle body 10, can be positioned in front of each of the rotation centers C1 and C2 of the rotating cleaning sections 40 and 41. The central axis Y, which divides the front-to-back length L1 of the nozzle body 10, can be closer to the front end of the nozzle body than each of the rotation centers C1 and C2 of the rotating cleaning sections 40 and 41. This is done to prevent the rotating cleaning sections 40 and 41 from blocking the second passage 114.

[0136] Therefore, the distance L3 between the central axis Y and each of the rotation centers C1 and C2 of the rotating cleaning units 40 and 41 can be set to a value greater than zero.

[0137] Additionally, the distance L2 between the rotation centers C1 and C2 of the rotating cleaning units 40 and 41 can be greater than the diameter of each of the cleaning cloths 402 and 404. This is to prevent the cleaning cloths 402 and 404 from interfering with each other during rotation, thereby reducing mutual friction, and also to prevent the area to be cleaned from being reduced due to interference.

[0138] Although unrestricted, the diameter of each of the cleaning cloths 402 and 404 can be more than 0.6 times or more than half the width of the nozzle body 10 in the horizontal direction. In this case, the contact area between each of the cleaning cloths 402 and 404 and the floor surface to be cleaned facing the nozzle body 10 may increase, and the area not facing the nozzle body 10 that can be cleaned may also increase. Additionally, when using the nozzle 1 to perform cleaning, the area to be cleaned can be ensured by using minimal movement.

[0139] The nozzle housing 100 may include a nozzle base 110 and a nozzle cover 130 connected to the upper part of the nozzle base 110.

[0140] The nozzle base 110 can provide a first passage 112. The nozzle housing 100 may also include a passage forming portion 150, which together with the nozzle base 110 provides a second passage 114.

[0141] The passage forming part 150 can be connected to the upper center part of the nozzle base 110 and its end is connected to the connecting tube 50.

[0142] Therefore, since the second passage 114 can extend forward and backward in an approximately straight shape through the arrangement of the passage forming part 150, the length of the second passage 114 can be minimized, and the loss of passage in the nozzle 1 can be minimized.

[0143] The front portion of the passage forming portion 150 may cover the upper side of the first passage 112. The passage forming portion 150 may be configured to slope upward from its front end toward the rear.

[0144] Therefore, the height of the front part of the passage forming part 150 can be less than the height of its rear part.

[0145] According to this embodiment, since the front part of the passage forming portion 150 has a relatively low height, the height of the front part in the total height of the suction nozzle 1 can be reduced. As the height of the suction nozzle 1 decreases, the suction nozzle 1 can be inserted into the narrow space under the furniture or chair to be cleaned.

[0146] 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.

[0147] The connecting tube 50 may include: a first connecting tube 510 connected to the end of the passage forming portion 150; a second connecting tube 520 rotatably connected to the first connecting tube 510; and a guide tube 530 that allows the first connecting tube 510 and the second connecting tube 520 to communicate with each other.

[0148] The first connecting tube 510 can be mounted on the extension 129, and the second connecting tube 520 can be connected to the extension tube or hose of the cleaner.

[0149] Multiple rollers for smooth movement of the nozzle 1 can be provided below the nozzle base 110.

[0150] For example, in the nozzle base 110, the first roller 124 and the second roller 126 can be disposed after the first passage 112. The first roller 124 and the second roller 126 can be spaced apart from each other in the horizontal direction.

[0151] According to this embodiment, since the first roller 124 and the second roller 126 are disposed after the first passage 112, the first passage 112 can be configured to be as close as possible to the front end of the nozzle base 110, thereby increasing the area to be cleaned by the nozzle 1.

[0152] As the distance from the front end of the nozzle base 110 to the first passage 112 increases, the area in which suction is ineffective in front of the first passage 112 during cleaning may increase, and therefore, the area where cleaning is not performed may increase.

[0153] On the other hand, the distance from the front end of the nozzle base 110 to the first passage 112 can be minimized, and therefore, the area to be cleaned may be increased.

[0154] In addition, since the first roller 124 and the second roller 126 are located after the first passage 112, the horizontal length of the first passage 112 can be maximized.

[0155] In other words, the distance between each of the two ends of the first passage 112 and each of the two ends of the nozzle base 110 can be minimized.

[0156] In this embodiment, the first roller 124 can be disposed in the space between the first passage 112 and the first cloth 402. Additionally, the second roller 126 can be disposed in the space between the first passage 112 and the second cloth 404.

[0157] Each of 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 while extending in a horizontal direction.

[0158] The distance between shaft 125 and the front end of nozzle base 110 can be greater than the distance between each of cloths 402 and 404 (or the rotating plate described later) and the front end of nozzle base 110.

[0159] For example, at least a portion (the cloth and / or the rotating plate) of each of the rotating cleaning sections 40 and 41 may be disposed between the shaft 125 of the first roller 124 and the shaft 125 of the second roller 126.

[0160] Due to the above arrangement, the rotating cleaning units 40 and 41 can be positioned as close as possible to the first passageway 112. Therefore, the area on the floor surface on which the suction nozzle 1 is provided may be increased to be cleaned by the rotating cleaning units 40 and 41, thereby improving floor cleaning performance.

[0161] Although not restricted, multiple rollers can support the nozzle 1 at three points. That is, the multiple rollers may also include a third roller 129a disposed on the extension 129 of the nozzle base 110.

[0162] Additionally, the third roller 129a can be positioned behind the cloths 402 and 404 to prevent interference with them.

[0163] The nozzle body 10 may also include a water tank 200 for supplying water to the cloths 402 and 404.

[0164] The water tank 200 can be detachably connected to the nozzle housing 100. With the water tank 200 installed on the nozzle housing 100, water from the water tank 200 can be supplied to each of the cloths 402 and 404.

[0165] The nozzle body 10 may also include an operating part 300 for separating the nozzle body 10 when the water tank 200 is mounted on the nozzle housing 100.

[0166] For example, the operating part can be provided on the nozzle housing 100. A first connecting part 310 to be connected to the water tank 200 can be provided on the nozzle housing 100, and a second connecting part 254 to be connected to the first connecting part 310 can be provided on the water tank 200.

[0167] The operating part 300 can be provided on the nozzle housing 100 so that it can move vertically. The first connecting part 310 can be provided below the operating part 300 to receive the operating force of the operating part 300 so that it can move.

[0168] For example, the first connecting part 310 can move forward and backward. For this purpose, the operating part 300 and the first connecting part 310 can each have inclined surfaces that contact each other.

[0169] When the operating part 300 descends through the inclined surface, the first connecting part 310 can move horizontally (e.g., forward and backward).

[0170] The first connecting portion 310 may include a hook 312 connected to the second connecting portion 254, and the second connecting portion 254 may include a groove 256 for inserting the hook 312.

[0171] The first connecting part 310 can be elastically supported by the elastic member 314, so that the connection between the first connecting part 310 and the second connecting part 254 is maintained.

[0172] Therefore, the hook 312 can be in a state where the elastic member 314 is inserted into the groove 256. When the operating part 300 is pressed down, the hook 312 can be separated from the groove 256. In the state where the hook 312 is separated from the groove 256, the water tank 200 can be separated from the nozzle housing 100.

[0173] In this embodiment, for example, the operating part 300 may be disposed directly above the second passage 114. For example, the operating part 300 may be configured to overlap with the center line A2 of the second passage 114 in the vertical direction.

[0174] <Water Regulation Unit>

[0175] Meanwhile, the nozzle body 10 may also include a water regulating unit 700, which regulates the switching operation and rotation speed (rpm) of the pump motor 280.

[0176] Additionally, the water adjustment unit 700 may include adjustment portions 710, 720, and 730 mounted on the nozzle body 10, such that at least a portion of the water adjustment unit 700 is exposed to the rear or top surface of the nozzle body 10.

[0177] As described above, when the adjustment units 710, 720, and 730 are exposed on the rear or top surface of the nozzle body 10, a user standing behind the nozzle body 10 can manipulate the adjustment units 710, 720, and 730 using his / her feet. Here, the user is in a position standing on the same floor surface as the bottom surface on which the nozzle body 10 is placed.

[0178] For example, adjustment units 710, 720, and 730 can be located on the rear side of the nozzle body 10 (facing the user's feet). The amount of water discharged from the water tank 200 can be adjusted by adjustment units 710, 720, and 730. Additionally, it is possible to control whether water is discharged from the water tank 200.

[0179] Adjustment units 710, 720, and 730 can be operated using the user's hands or feet. Water in water tank 200 can be drained or not drained by adjustment units 710, 720, and 730.

[0180] Alternatively, the regulating units 710, 720, and 730 can be operated by the user's hand or foot to regulate the amount of water discharged from the water tank 200. For example, as the regulating units 710, 720, and 730 are operated, water can be discharged from the water tank 200 at a first amount per unit time, or at a second amount greater than the first amount per unit time. As described above, the regulation of the amount of water to be discharged through the regulating units 710, 720, and 730 can be performed in several stages.

[0181] According to the embodiment, the water adjustment unit 700 can be disposed on the left side relative to the center of the nozzle body 10 in the front-to-back direction. Here, "left side" can refer to the left side when the nozzle body 10 is viewed from the rear side where the connecting pipe 50 is provided.

[0182] Normally, the user can hold the cleaner's handle (not shown) with their right hand. Additionally, the cleaner's handle (not shown) can be connected to a connecting tube 50 located at the center of the nozzle body 10.

[0183] Furthermore, when the user holds the cleaner's handle to perform cleaning while the user is standing, the center of the nozzle body 10, which is equipped with the connecting tube 50, can be positioned on the user's right side. Additionally, the left side of the nozzle body 10 can be positioned relative to the center on the front side of the nozzle body 10 in the front-rear direction.

[0184] Specifically, the left side of the suction nozzle body 10 can be positioned in front of the user's right foot.

[0185] Therefore, if the water adjustment unit 700 is positioned on the left side relative to the center of the nozzle body 10, the water adjustment unit 700 can be positioned in front of the user's right foot when the user holds the cleaner handle with their right hand to perform cleaning, and thus the user can easily manipulate the water adjustment unit 700 using their right foot.

[0186] In addition, when the water adjustment unit 700 is positioned on the left side relative to the center of the nozzle body 10, the user can check the position and status of the water adjustment unit 700 in real time without any interference while using the user's right hand to hold the cleaner handle to perform cleaning.

[0187] For reference, when the water adjustment unit 700 is positioned on the right side relative to the center of the nozzle body 10 in the front-to-back direction, the following limitations may occur.

[0188] First, when the water regulating unit 700 is located on the right side of the nozzle body 10, it may be covered by the connecting tube 50 located at the center of the nozzle body 10 when the user uses their right hand to hold the cleaner handle to perform cleaning. Therefore, during cleaning, there is a limitation that it is difficult for the user to check the position and status of the water regulating unit 700 in real time.

[0189] In addition, when the water adjustment unit 700 is located on the right side of the nozzle body 10, when the user operates the water adjustment unit 700 while holding the cleaner handle with his right hand to perform cleaning, it may be difficult to operate the water adjustment unit 700 due to interference with the connecting pipe 50 located at the center of the nozzle body 10. Furthermore, there is the inconvenience that the user must move to the right to operate the water adjustment unit 700.

[0190] <Regulation Department>

[0191] Here, the adjustment units 710, 720, and 730 can be implemented according to various embodiments. Each of the adjustment units 710, 720, and 730 can move linearly or rotatably relative to the nozzle body 10 in the horizontal, front-back, or vertical direction.

[0192] As described above, when the adjustment units 710, 720 and 730 move linearly or rotatably in the horizontal, front-back or vertical direction, the user can drive the adjustment units 710, 720 and 730 by using his or her feet.

[0193] Adjustment units 710, 720, and 730 can be provided on one side of the rear surface of the nozzle body 10. Furthermore, during cleaning, the user's foot can be positioned behind the nozzle body 10. Here, the adjustment units 710, 720, and 730 can be operated by the user's foot. Specifically, while the adjustment units 710, 720, and 730 move linearly or rotatably in the horizontal, forward / backward, or vertical direction, the user can manipulate water to drain from the water tank 200 or not drain water from the water tank by using their foot. Additionally, the water drained from the water tank 200 can be drained at a first rate per unit time or at a second rate greater than the first rate per unit time.

[0194] The adjustment units 710, 720 and 730 according to various embodiments will be described below.

[0195] <Water regulating switch>

[0196] Adjustment units 710, 720, and 730 may include a water adjustment switch 710 disposed on the rear exterior of the nozzle body to receive forward and backward pressure applied by the user's hand or foot. The water adjustment switch 710 is rotatable about a vertical central axis CA1. Here, the central axis CA1 may be defined vertically or obliquely. Additionally, the water adjustment switch 710 can rotate in units of approximately 10 degrees.

[0197] As described above, when the water regulating switch 710 receives forward and backward pressing pressure, the user can easily operate the water regulating switch 710 using the user's hand or foot. Specifically, the user can operate the water regulating switch 710 in a backward-protruding state by pushing one side or the other side of the water regulating switch 710 forward.

[0198] Here, water may or may not be discharged from the water tank 200 by means of the water regulating switch 710 based on the number of times the user pushes the water regulating switch 710.

[0199] Alternatively, water can be discharged from the water tank 200 by the water regulating switch 710 according to the number of times the water regulating switch 710 is pushed by the user, either in the first amount per unit time or in the second amount per unit time that is greater than the first amount.

[0200] For example, when water is not discharged from water tank 200, when the user pushes the water regulating switch 710 once, the water regulating switch 710 can be configured to discharge water from water tank 200 at a first amount per unit time, and when the user pushes the water regulating switch 710 twice, the water regulating switch 710 can be configured to discharge water from water tank 200 at a second amount greater than the first amount per unit time.

[0201] In addition, water cannot be discharged from the water tank 200 when the user pushes the water regulating switch 710 three times.

[0202] Additionally, the water regulating switch 710 may include: a first pushing part 711, which rotates about a vertical central axis C1 and is disposed on one side of the water regulating switch 710 to receive a pressing force applied forward by the user; and a second pushing part 712, which is integrated with the first pushing part 711 and is disposed on the other side of the water regulating switch 710 to receive a pressing force applied forward by the user.

[0203] When the water regulating switch 710 is provided as described above, the user can easily manipulate the first push part 711 and the second push part 712 forward by using the user's hand or foot, so that water is discharged from the water tank 200 or not discharged.

[0204] In addition, water can be discharged from the water tank 200 at a first amount per unit time or at a second amount greater than the first amount per unit time.

[0205] Figure 5 This illustrates what it looks like when viewed from above the mouthpiece body. Figure 4 A view of the various operating states of the water regulating switch.

[0206] In detail, such as Figure 5 As illustrated in (b), when the first actuation part 711 is pressed by the user, the pump motor 280 can rotate at a first rotational speed (rpm). Additionally, as... Figure 5 As illustrated in (c), when the second pusher 712 is pressed, the pump motor 280 can rotate at a second rotational speed (rpm) greater than the first rotational speed (rpm).

[0207] In other words, such as Figure 5 As illustrated in (c), when the user pushes the first pusher 711, water can be discharged from the water tank 200 at a first amount per unit time. Figure 5 As illustrated in (c), when the user pushes the second pusher 712, water can be discharged from the water tank 200 at a second amount greater than the first amount per unit time.

[0208] like Figure 5As illustrated in (a), when the first pusher 711 and the second pusher 712 are not pressed, the water regulating switch 710 can be set in the center and the pump motor 280 can be turned off.

[0209] In other words, the water regulating switch 710 is like Figure 5 In the centrally positioned state, as illustrated in (a), water cannot be discharged. Then, when the user pushes the first actuating part 711 located on the left side of the water regulating switch 710 to rotate the water regulating switch 710 to the left, water can be discharged from the water tank 200 at a first amount per unit time. Additionally, when the user pushes the second actuating part 712 located on the right side of the water regulating switch 710 to rotate the water regulating switch 710 to the right, water can be discharged from the water tank 200 at a second amount per unit time. The configuration for detecting operation of the water regulating switch 710 will be described with reference to the accompanying drawings.

[0210] In addition, such as Figure 5 As illustrated in (a), when the first push part 711 and the second push part 712 are not pressed, a groove 713 with an inwardly recessed shape may be formed in the central portion between the first push part 711 and the second push part 712.

[0211] For example, the water regulating switch 710 can have a curved shape.

[0212] When the groove 713 is formed as described above, the first pushing part 711 and the second pushing part 712 can protrude outward relative to each other. In addition, the outwardly protruding first pushing part 711 and the second pushing part 712 can be pressed more easily by using the user's foot.

[0213] Additionally, the water regulating unit 700 may include a control board 750 disposed inside the nozzle body 10 between the water regulating switch 710 and the pump motor 280 (see [link]). Figure 11 ).

[0214] Additionally, the control substrate 750 may include: a first element 751 (see Figure 11 The first element is positioned facing the rear end of the first pusher 711 and receives the pressing force applied to the first pusher 711 to transmit a drive signal to the pump motor 280; and the second element 752 (see Figure 11 The second element is positioned to face the rear end of the second pusher 712 and to receive the pressing force applied to the second pusher 712 to transmit a drive signal to the pump motor 280.

[0215] Here, each of the first element 751 and the second element 752 can be configured as a switching element.

[0216] Therefore, when the user pushes the first actuation part 711 of the water regulating switch 710, the first element 751 can be pressed and a corresponding signal (first signal) can be transmitted to the pump motor 280, and thus the pump motor 280 can operate under the first output. Therefore, water can be discharged from the water tank 200 at a first amount per unit time.

[0217] On the other hand, when the user pushes the second actuation part 712 of the water regulating switch 710, the second element 752 can be pressed to transmit a corresponding signal (second signal) to the pump motor 280, and thus the pump motor 280 can operate under the second output. Therefore, water can be discharged from the water tank 200 at a second amount greater than the first amount per unit time.

[0218] Meanwhile, when the water regulating switch 710 is set in its central position, that is, when neither the first push part 711 nor the second push part 712 is pressed, neither the first element 751 nor the second element 752 is pressed, no signal is sent to the pump motor 280, and the operation of the pump motor 280 can be stopped. Therefore, water cannot be discharged from the water tank 200.

[0219] For reference, a transmission member for transmitting the pressing pressure of the first pusher 711 and the second pusher 712 to the first element 751 and the second element 752 may be provided on one side of the first pusher 711 and the second pusher 712.

[0220] The transmission member can be disposed between the water regulating switch 710 and the first element 751 and the second element 752 to rotate together with the water regulating switch 710 about a vertical rotation axis. Therefore, when the first pushing part 711 is pushed by the user, the first element 751 can be pushed, and when the second pushing part 712 is pushed by the user, the second element 752 can be pushed.

[0221] Figure 6 This is a perspective view illustrating the state in which the water adjustment rod is mounted on the rear surface of the nozzle body when viewed from the rear. Additionally, Figure 7 This illustrates the effect when viewed from the side of the mouthpiece body. Figure 6 A view showing the various operating states of the water regulating lever. Additionally, Figure 8 This is a perspective view illustrating a modified example of the water adjustment rod being mounted on the rear surface of the nozzle body when viewed from the rear side. Additionally, Figure 9 This illustrates what it looks like when viewed from the rear of the nozzle body. Figure 8 A view of the various operating states of the water regulating lever.

[0222] <Water Adjustment Rod>

[0223] refer to Figures 6 to 9The adjustment units 710, 720 and 730 may include water adjustment levers 720 and 730 disposed on the rear exterior of the nozzle body 10 to receive pressure applied vertically by the user's hand or foot.

[0224] As described above, when the water regulating switch 710 receives pressure in the vertical direction, the user can easily operate the water regulating switch 710 using their hand or foot. Specifically, the user can easily operate the water regulating switch 710 by pushing the water regulating switch 710 that protrudes backward and downward, or by lifting the water regulating switch 710 upward.

[0225] Here, water can or cannot be discharged from the water tank 200 via the water regulating rods 720 and 730 based on the number of times the user pushes the water regulating switch 710.

[0226] Additionally, water can be discharged from the water tank 200 through the water regulating rods 720 and 730 according to the number of times the user pushes the water regulating rods 720 and 730, either in the first amount per unit time or in the second amount per unit time that is greater than the first amount.

[0227] For example, when water is not discharged from water tank 200, if the user pushes the water regulating levers 720 and 730 down once in a certain time, the water regulating levers 720 and 730 can be configured to discharge water from water tank 200 at a first amount per unit time. If the user pushes the water regulating levers 720 and 730 down twice in a certain time, the water regulating levers 720 and 730 can be configured to discharge water from water tank 200 at a second amount per unit time greater than the first amount.

[0228] Additionally, when the user pushes the water regulating levers 720 and 730 down three times in a short period of time, water cannot be discharged from the water tank 200.

[0229] Pump motor 280 can operate in a first mode when the water adjusting levers 720 and 730 are pressed down to lower the pump. Pump motor 280 can operate in a second mode, different from the first mode, when the water adjusting levers 720 and 730 are raised to raise the pump.

[0230] Furthermore, with the water regulating rods 720 and 730 positioned at their center, the pump motor 280 can operate in a third mode, different from the first and second modes.

[0231] Here, each of the first mode, the second mode, and the third mode can be any one of the following: the pump motor 280 is stopped, the pump motor 280 is rotating at the first speed, and the pump motor is rotating at the second speed.

[0232] For example, the water regulating rod 720 can be like Figure 6As illustrated, it rotates vertically about the horizontal central axis CA2. Here, the central axis CA2 can be defined horizontally or at an angle. In addition, the water regulating rod 720 can rotate about the central axis CA2 in units of approximately 10 to 30 degrees.

[0233] As described above, when the water regulating lever 720 is installed, the user can simply push the water regulating lever 720 downward or lift the water regulating lever 720 upward by using the user's hand or foot, so that water is discharged from the water tank 200 or not discharged from the water tank 200.

[0234] In addition, water can be discharged from the water tank 200 at a first amount per unit time or at a second amount greater than the first amount per unit time.

[0235] In detail, such as Figure 7 As illustrated in (a), the pump motor 280 can be shut off when the water regulating rod 720 is in its maximum raised state. That is, when the water regulating rod 720 is in its maximum raised state... Figure 7 In the state of maximum rise as illustrated in (a), water cannot be discharged from water tank 200.

[0236] On the other hand, when the water regulating rod 720 is at its maximum lowering state, the pump motor 280 can rotate at a second rotational speed (rpm).

[0237] For reference, with the water regulating rod 720 set at its center position, the pump motor 280 can rotate at a first rotational speed (rpm) that is less than the second rotational speed.

[0238] In other words, such as Figure 7 As illustrated in (b), when the user pushes the water regulating lever 720 to its maximum lower position, water can be discharged from the water tank 200 at a second rate per unit time. Additionally, when the user positions the water regulating lever 720 at... Figure 7 The position of (a) and Figure 7 When the position of (b) is at the center, water can be discharged from the water tank 200 at a rate less than the second rate per unit time.

[0239] On the other hand, such as Figure 7 As illustrated in (a), when the water regulating rod 720 is at its maximum height, the pump motor 280 can rotate at a first rotational speed (rpm) or a second rotational speed (rpm).

[0240] In addition, such as Figure 7 As illustrated in (b), the pump motor 280 can be shut off when the water regulating rod 720 is at its maximum lowered state. Additionally, when the water regulating rod 720 is set... Figure 7 The position of (a) and Figure 7When the pump motor 280 is in the center state between positions (b), the pump motor can be turned off.

[0241] As another example, the water regulating rod 730 can be as follows: Figure 8 As illustrated, it rotates vertically about the central axis CA3 in the front-to-back direction. Here, the central axis CA3 can be defined horizontally or at an angle. In addition, the water regulating rod 730 can rotate about the central axis CA3 in units of approximately 20 to 25 degrees.

[0242] Here, the water regulating rod 730 can extend outward from the inside of the part closest to the center in the horizontal direction.

[0243] As described above, when the water regulating lever 730 is installed, the user can easily rotate the water regulating lever 730 downwards or upwards by using the user's hand or foot, so that water is discharged from the water tank 200 or not discharged from the water tank 200.

[0244] In addition, water can be discharged from the water tank 200 at a first amount per unit time or at a second amount greater than the first amount per unit time.

[0245] In detail, such as Figure 9 As illustrated in (a), the pump motor 280 can be turned off when the water regulating lever 730 is rotated upwards by the user. As stated above, when the pump motor 280 is turned off, water cannot be discharged from the water tank 200.

[0246] In addition, such as Figure 9 As illustrated in (b), when the water regulating lever 730 is set in the center position while being rotated downwards by the user, the pump motor 280 can rotate at a first rotational speed (rpm). As described above, when the pump motor 280 rotates at the first rotational speed (rpm), water can be discharged from the water tank 200 at a first amount per unit time.

[0247] In addition, such as Figure 9 As illustrated in (c), when the water regulating lever 730 is positioned on the lower side while being rotated downwards by the user, the pump motor 280 can rotate at a second rotational speed (rpm) greater than the first rotational speed (rpm). As described above, when the pump motor 280 rotates at the second rotational speed (rpm), water can be discharged from the water tank 200 at a second amount greater than the first amount per unit time.

[0248] In other words, in the water regulating rod 730, Figure 9In the state illustrated in (a), where the water is arranged on the upper side, water cannot be discharged. Then, when the user rotates the water regulating rod 730 downwards so that the water regulating rod 730 is in the center position, water can be discharged from the water tank 200 at a first amount per unit time. Additionally, when the user rotates the water regulating rod 730 downwards so that the water regulating rod 730 is in the lower side, water can be discharged from the water tank 200 at a second amount per unit time.

[0249] Additionally, the water regulating rods 720 and 730 may protrude downwards, and the top surface 721 and bottom surface 722 of the water regulating rod 720 and the top surface 731 and bottom surface 732 of the water regulating rod 730 may be flat to provide a plane.

[0250] As described above, when each of the water adjustment levers 720 and 730 has a plate shape, the water adjustment levers 720 and 730 can be easily manipulated using the user's hands and feet. Specifically, the user can push the water adjustment levers 720 and 730 or lift them upwards using the user's big toe.

[0251] <Touch Method>

[0252] In addition, each of the adjustment units 710, 720 and 730 may include a touch button (not shown) located on the rear exterior of the nozzle body 10, so that operation commands are input by touch via the user's hand or foot.

[0253] As described above, when a touch button is provided, the pump motor 280 can be turned on / off with a simple operation, in which the user's toe touches the touch button, thereby adjusting the rotation speed of the pump motor 280.

[0254] Specifically, with water not being discharged from the water tank 200, when the user pushes the touch button (not shown) once, water can be discharged from the water tank 200 at a first rate per unit time. Furthermore, when the user pushes the touch button (not shown) twice, water can be discharged from the water tank 200 at a second rate greater than the first rate per unit time. Additionally, when the user pushes the touch button (not shown) three times, the operation of the pump motor 280 can be stopped to cease water discharge from the water tank 200.

[0255] Display Department

[0256] Additionally, the water regulating unit 700 may include a display unit 740 that emits light outward toward the rear of the suction nozzle body 10 to display various states of the pump motor 280. The display unit 740 can display different states depending on the operating states of the regulating units 710, 720, and 730.

[0257] When the display unit 740 is set up, the user can visually confirm the various states of the pump motor 280.

[0258] For example, the display unit 740 may include a total of three lights. Alternatively, the three lights may be arranged in a straight line at equal intervals.

[0259] In this state, the user can turn on the first light while adjusting the adjustment units 710, 720, and 730, thereby confirming that the pump motor 280 is rotating at a first rotational speed. That is, it is confirmed that water is being discharged from the water tank 200 at a first amount per unit time.

[0260] Additionally, when the first and second lights are turned on, the user can confirm that the pump motor 280 is rotating at a second rotational speed greater than the first rotational speed. That is, it can be confirmed that water is being discharged from the water tank 200 at a second rate greater than the first amount per unit time.

[0261] Additionally, when the three lights are turned on, the user can confirm that the pump motor 280 is rotating at a third rotational speed greater than the second rotational speed. That is, it can be confirmed that water is being discharged from the water tank 200 at a third rate greater than the second rate per unit time.

[0262] Additionally, when all three lights are off, the user can confirm that the pump motor 280 has stopped and the water discharge from the water tank 200 has stopped.

[0263] Figure 11 and Figure 12 This is an exploded perspective view of a suction nozzle according to one embodiment, and Figure 13 and Figure 14 This is a perspective view of a water tank according to one embodiment.

[0264] refer to Figure 3 , Figure 11 and Figure 14 The nozzle body 10 may also include a plurality of drive units 170 and 171 for individually driving the rotating cleaning units 40 and 41.

[0265] The plurality of drive devices 170 and 171 may include a first drive device 170 for driving the first rotating cleaning part 40 and a second drive device 171 for driving the second rotating cleaning part 41.

[0266] Since drive units 170 and 171 are driven individually, even if one of the multiple drive units 170 and 171 fails, the other drive unit can be driven to allow a portion of the rotating cleaning units 40 and 41 to rotate.

[0267] The first drive unit 170 and the second drive unit 171 can be arranged to be horizontally spaced apart from each other in the nozzle body 10.

[0268] In addition, each of the drive units 170 and 171 can be located after the first passage 112.

[0269] For example, the second passage 114 can be disposed between the first drive device 170 and the second drive device 171. Therefore, although multiple drive devices 170 and 171 are disposed, the second passage may be unaffected by the first drive device 170 and the second drive device 171, and the length of the second passage 114 can be minimized.

[0270] According to this embodiment, since the first drive device 170 and the second drive device 171 are respectively provided on both sides of the second passage 114, the weight of the suction nozzle 1 can be horizontally balanced to prevent the center of gravity from tilting to either side.

[0271] Multiple drive units 170 and 171 can be disposed within the nozzle body 10. For example, multiple drive units 170 and 171 can be mounted on the nozzle base 110 and covered by the nozzle cover 130. That is, multiple drive units 170 and 171 can be disposed between the nozzle base 110 and the nozzle cover 130.

[0272] The rotating cleaning units 40 and 41 may also include rotating plates 420 and 440, which receive power from drive units 170 and 171 respectively for rotation.

[0273] Rotating plates 420 and 440 may include: a first rotating plate 420, which can be connected to a first driving device 170 and may be attached to a first wiping cloth 402; and a second rotating plate 440, which can be connected to a second driving device 171 and may be attached to a second wiping cloth 404.

[0274] Each of the rotating plates 420 and 440 may have a circular plate shape, and cloths 402 and 404 may be attached to the rotating plates 420 and 440 respectively.

[0275] Rotating plates 420 and 440 can be connected to drive units 170 and 171 below the nozzle base 110, respectively. That is, rotating plates 420 and 440 can be connected to drive units 170 and 171 outside the nozzle housing 100, respectively.

[0276] <Water Tank>

[0277] The water tank 200 can be mounted on the upper side of the nozzle housing 100. For example, the water tank 200 can be placed on the nozzle cover 130. With the water tank 200 placed on the nozzle cover 130, the water tank 200 can define a portion of the appearance of the nozzle body 10. For example, the water tank 200 can define a portion of the appearance of the top surface of the nozzle body 10.

[0278] The water tank 200 may include a first body 210 and a second body 250 coupled to the first body 210 to define a chamber therein where water is stored together with the first body 210.

[0279] The chamber may include: a first chamber 222 disposed above the first drive device 170; a second chamber 224 disposed above the second drive device 171; and a connecting chamber 226 that connects the first chamber 222 to the second chamber 224 and is disposed above the second passage 114.

[0280] In this embodiment, the volume of the connecting chamber 226 can be smaller than the volume of each of the first chamber 222 and the second chamber 224, thereby increasing the amount of water to be stored by the water tank 200 while minimizing the increase in the height of the nozzle 1.

[0281] The water tank 200 can be configured such that its front height is low and its rear height is high. For example, the connecting chamber 226 can connect the first chamber 222 and the second chamber 224 located on both sides of the front of the water tank 200 to each other. That is, the connecting chamber 226 can be located at the front of the water tank 200.

[0282] The water tank 200 may include a first injection port 211 for injecting water into a first chamber 222 and a second injection port 212 for injecting water into a second chamber 224.

[0283] The first injection port 211 can be covered by the first injection port cap 240, and the second injection port 212 can be covered by the second injection port cap 242. For example, each of the injection port caps 242 and 240 can be made of rubber material.

[0284] Each of the injection holes 211 and 212 can be formed in, for example, the first body 210.

[0285] The height of the two side surfaces of the first body 210 may be lowest at the front end and may increase toward the rear end.

[0286] To ensure the size of each of the injection holes 211 and 212, each of the injection holes 211 and 212 can be set to be closer to the rear end than the front end in the first body 210.

[0287] The first body 210 may include a first slot 218 for preventing the operating part 300 and the connecting parts 310 and 254 from interfering with each other. The first slot 218 may have a shape in which the rear end of the central portion of the first body 210 is recessed forward.

[0288] Additionally, the second body 250 may include a second slot 252 for preventing interference with the operating part 300. The second slot 252 may have a shape in which the rear end of the central portion of the second body 250 is recessed forward.

[0289] The second body 250 may also include a slot cover 253 that covers a portion of the first slot 218 of the first body 210 when it is connected to the first body 210. That is, the length of the second slot 252 in the front-rear direction may be less than the length of the first slot 218 in the front-rear direction.

[0290] Additionally, the second connecting portion 254 can extend downward from the slot cover 253. Therefore, the second connecting portion 254 can be disposed within the space defined by the first slot 218.

[0291] The water tank 200 may also include connecting ribs 235 and 236, which are configured to connect to the nozzle cover 130 before the second connecting portion 254 of the water tank 200 can be connected to the first connecting portion 310.

[0292] Before the second connecting part 254 of the water tank 200 can be connected to the first connecting part 310, the connecting ribs 235 and 236 can guide the water tank 200 to the connection position on the nozzle cover 130.

[0293] For example, multiple connecting ribs 235 and 236 may protrude from the first body 210 and be configured to be spaced apart from each other in a horizontal direction.

[0294] Although unrestricted, multiple connecting ribs 235 and 236 can protrude forward from the front surface of the first body 210 and be spaced apart from each other in the horizontal direction.

[0295] Since the drive devices 170 and 171 are located in the nozzle body 10, a portion of the nozzle body 10 can protrude upward from both sides of the second passage 114 through the drive devices 170 and 171.

[0296] The water tank 200 may have a pair of receiving spaces 232 and 233 to prevent interference with the portion protruding from the nozzle body 10. For example, the pair of receiving spaces 232 and 233 may be formed by making a portion of the first body 210 concave upwards. The pair of receiving spaces 232 and 233 may be divided into a left and a right portion by a first slot 218.

[0297] The water tank 200 may also include a drain hole 216 for draining water.

[0298] For example, a drain hole 216 can be formed in the bottom surface of the first body 210. The drain hole 216 can be opened and closed by a valve 230. The valve 230 can be located inside the water tank 200.

[0299] In this embodiment, the drain hole 216 may be formed in the lower part of one of the first chambers 222 and the second chamber 224. That is, the water tank 200 may include a single drain hole 216.

[0300] The reason why the water tank 200 includes a single drain hole 216 may be to reduce the number of parts where water leaks.

[0301] In other words, since components (control board, drive motor, etc.) that receive power for operation are located in the suction nozzle 1, contact between these components and water should be completely prevented. To prevent components from coming into contact with water, leakage at the part used to drain water should be prevented substantially.

[0302] As the number of drain holes increases, additional structures are needed to prevent water leakage, which can complicate the structure. Furthermore, even with leak-proof structures in place, complete leak prevention may be difficult.

[0303] Furthermore, as the number of drain holes 216 in the water tank 200 increases, the number of valves 230 used to open and close the drain holes 216 may also increase. This can be interpreted as an increase in the number of components and a decrease in the volume of the chamber used to store water within the water tank 200.

[0304] Since the rear side of the water tank 200 is higher than the front side of the water tank 200, the discharge hole 216 can be set close to the front end of the first body 210 so that the water in the water tank 200 can be discharged smoothly.

[0305] <Sucking Cap>

[0306] Figure 15 This is a perspective view of the nozzle cover as viewed from above, according to one embodiment. Figure 16 This is a perspective view of the nozzle cover when viewed from below, according to one embodiment.

[0307] refer to Figure 11 , Figure 15 and Figure 16 The nozzle cover 130 may include drive cover 132 and 134 covering the upper side of the drive units 170 and 171.

[0308] Each of the drive unit covers 132 and 134 may be a portion that protrudes upward from the nozzle cover 130. Each of the drive unit covers 132 and 134 may surround the upper side of each of the drive units 170 and 171 without interfering with each of the drive units 170 and 171 mounted on the nozzle base 110.

[0309] In addition, when the water tank 200 is installed on the nozzle cover 130, the drive cover 132 and 134 can be housed in the receiving spaces 232 and 233 respectively to prevent the components from interfering with each other.

[0310] Additionally, in the water tank 200, the first chamber 222 and the second chamber 224 can be configured to surround the circumferences of the drive cover 132 and 134, respectively.

[0311] Therefore, according to this embodiment, each of the first chamber 222 and the second chamber 224 can be increased in volume.

[0312] The first body 210 of the water tank 200 can be placed on the part of the suction cover 130 that is lower than the drive cover 132 and 134.

[0313] At least a portion of the bottom surface of the water tank 200 may be configured to be lower than the axes A3 and A4 of the drive motor, which will be described later. For example, the bottom surfaces of the first chamber 222 and the second chamber 224 may be configured to be lower than the axes A3 and A4 of the drive motor, which will be described later.

[0314] The nozzle cover 130 may also include a passage cover 136 that covers the passage forming portion 150. The passage cover 136 may be disposed between the drive portion covers 132 and 134 and at a position corresponding to the first slot 218 of the water tank 200.

[0315] Additionally, the passage cover 136 can support the operating part 300. The operating part 300 may include a connecting hook 302 connected to the passage cover 136. The operating part 300 may be disposed above the passage cover 136 for connection to the passage cover 136.

[0316] The connecting hook 302 can prevent the operating part 300 from separating upward from the passage cover 136 when it is connected to the passage cover 136.

[0317] Additionally, an opening 136a can be formed in the passage cover 136 for the second connecting part 254 to be inserted. Furthermore, although the second connecting part 254 of the water tank 200 can be inserted into the opening 136a, the first connecting part 310 can be connected to the second connecting part 254.

[0318] The passage cover 136 can be disposed on the first slot 218 of the first body 210 and the second slot 252 of the second body 250. In this embodiment, in order to allow for an increase in the capacity of the water tank 200, a portion of the water tank 200 can be disposed on each of the two sides of the passage cover 136. Therefore, the water tank 200 can be increased in capacity while preventing the water tank 200 from interfering with the second passage 114.

[0319] In addition, to prevent the water tank from increasing in height, the maximum height of the water tank 200 can be equal to or less than the maximum height of the passage cover 136.

[0320] In addition, to prevent the water tank 200 from colliding with the surrounding structure of the nozzle 1 while it moves, the entire water tank 200 can be configured to overlap vertically with the nozzle housing 100. That is, the water tank 200 will not protrude from the nozzle housing 100 in the horizontal or front-back directions.

[0321] The nozzle cover 130 may also include rib insertion holes 141 and 142 into which connecting ribs 235 and 236 provided on the water tank 200 can be inserted.

[0322] Therefore, with the connecting ribs 235 and 236 inserted into the rib insertion holes 141 and 142, the central portion of the water tank 200 moves downward to allow the second connecting part 254 to engage with the first connecting part 310.

[0323] A valve operating part 144, which can drive the valve 230 inside the water tank 200 and supply water flow, can be connected to the nozzle cover 130. The valve operating part 144 can be connected to the lower part of the nozzle cover 130, and a portion of the valve operating part 144 can protrude upward through the nozzle cover 130. When the water tank 200 is installed on the nozzle housing 100, the upwardly protruding valve operating part 144 can pass through the discharge hole 216 of the water tank 200 and then be inserted into the water tank 200.

[0324] The valve control unit 144 will be described later.

[0325] A seal 143 can be provided on the nozzle cover 130 to prevent water discharged from the water tank from leaking near the valve operating part 144.

[0326] A water pump 270, used to control the discharge of water from the water tank 200, can be mounted on the suction nozzle cover 130. The water pump 270 can be connected to the pump motor 280.

[0327] A pump mounting rib 146 for mounting a water pump 270 can be provided below the nozzle cover 130.

[0328] Pump 270 can be a pump whose operation causes the inner valve body to expand or contract to allow the inlet and outlet to communicate with each other while the inner valve body is operating. Therefore, pump 270 can be implemented by known structures, and thus, its detailed description will be omitted.

[0329] The valve body inside 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 from the water tank 200 can be continuously and stably supplied to the rotating cleaning units 40 and 41.

[0330] The operation of the pump motor 280 can be controlled by manipulating the adjustment units 710, 720, and 730. For example, the pump motor 280 can be turned on / off using the adjustment units 710, 720, and 730.

[0331] Alternatively, the output (or rotational speed) of the pump motor 280 can be adjusted by means of adjustment units 710, 720 and 730.

[0332] A support 290 for movably supporting the adjustment units 710, 720, and 730 can be mounted on the nozzle cover 130, and a variable resistor 292 or one or more switches can be connected to the adjustment units 710, 720, and 730. The signal for controlling the pump motor 280 can be changed based on the resistance change caused by the movement of the variable resistor 292, or the signal for controlling the pump motor 280 can be changed by switching one or more switches.

[0333] The nozzle cover 130 may also include one or more coupling bosses that are coupled to the nozzle base 110.

[0334] Additionally, an injection nozzle 149 for injecting water into the rotating cleaning sections 40 and 41 can be installed on the nozzle cover 130. For example, multiple injection nozzles 149 can be installed on the nozzle cover 130 in a horizontally spaced-apart manner.

[0335] A nozzle mounting boss 149c for mounting an injection nozzle 149 can be provided on the nozzle cover 130. For example, the injection nozzle 149 can be connected to the nozzle mounting boss 149c by screws.

[0336] The injection nozzle 149 may include a connector 149a to which a branch pipe, which will be described later, is connected.

[0337] <Suction nozzle base>

[0338] Figure 17 This is a view illustrating the state in which the passage forming part is connected to the nozzle base according to one embodiment, and Figure 18 This is a view of the nozzle base as viewed from below, according to one embodiment.

[0339] refer to Figure 11 , Figure 17 and Figure 18 The nozzle base 110 may include a pair of shaft through holes 116 and 118 in the drive units 170 and 171, through which the drive shafts (which will be described later) connected to the rotating plates 420 and 440 pass.

[0340] For example, a mounting groove 116a may be formed in the nozzle base 110 to accommodate a sleeve (which will be described later) formed in each of the drive units 170 and 171, and shaft through holes 116 and 118 may be formed in the mounting groove 116a.

[0341] For example, the mounting groove 116a may be circular in shape and defined downward from the nozzle base 110. Alternatively, the shaft through holes 116 and 118 may be defined in the bottom surface of the mounting groove 116a.

[0342] Since the sleeves (described later) provided on each of the drive units 170 and 171 are placed on the placement groove 116a, the horizontal movement of the drive units 170 and 171 can be restricted while the nozzle 1 is moving or while the drive units 170 and 171 are operating.

[0343] With the passage forming portion 150 connected to the nozzle base 110, the shaft through holes 116 and 118 can be respectively defined on both sides of the passage forming portion 150.

[0344] A substrate mounting portion 120 can be provided on the nozzle base 110, on which a control substrate 750 for controlling each of the drive devices 170 and 171 and / or the pump motor is mounted.

[0345] The control board 750 can be placed horizontally on the board mounting portion 120. Alternatively, the control board 750 can be mounted spaced apart from the bottom surface of the nozzle base 110.

[0346] The reason for this is to prevent water from contacting the control board 750 even if water leaks onto the bottom surface of the nozzle base 110. To this end, support protrusions 120a that support the control board 750 and are spaced apart from the bottom surface can be provided on the nozzle base 110.

[0347] Although not restricted, the substrate mounting portion 120 can be disposed on one side of the passage forming portion 150 on the nozzle base 110. For example, the control substrate 750 can be disposed near the adjustment portions 710, 720 and 730.

[0348] Therefore, the structure for connecting the control board 750 to the variable resistor 292 or the switch can be simplified.

[0349] In this embodiment, the control board 750 may be disposed on the opposite side of the valve operating section 144 relative to the second passage 114. This is to prevent water from flowing to the control board 750 even if water leaks through the valve operating section 144.

[0350] The nozzle base 110 may further include: a support rib 122 that supports the lower part of each of the drive devices 170 and 171; and connecting bosses 117 and 117a that are respectively connected to the drive devices 170 and 171.

[0351] Support ribs 122 may protrude from the nozzle base 110 and bend at least once to space each of the drive units 170 and 171 from the bottom surface of the nozzle base 110. Alternatively, a plurality of support ribs 122 spaced apart from each other may protrude from the nozzle base 110 to space each of the drive units 170 and 171 from the bottom surface of the nozzle base 110.

[0352] Even if water drips downwards onto the bottom surface of the nozzle base 110, the flow of water toward the drive devices 170 and 171 can be minimized because the drive devices 170 and 171 are spaced apart from the bottom surface of the nozzle base 110 by the support ribs 122.

[0353] Additionally, the nozzle base 110 may also include nozzle holes 119 through which each of the injection nozzles 149 passes.

[0354] When the nozzle cover 130 is attached to the nozzle base 110, a portion of the injection nozzle 149 attached to the nozzle cover 130 can pass through the nozzle hole 119.

[0355] Additionally, the nozzle base 110 may also include: an avoidance hole 121a for preventing interference with the structure of each of the drive devices 170 and 171; and a connecting boss 121 connected to the passage forming portion 150.

[0356] Since a portion of each of the drive units 170 and 171 is disposed within the avoidance hole 121a, the support rib 122 can be disposed around the avoidance hole 121a to minimize the flow of water toward the avoidance hole 121a. For example, the avoidance hole 121a can be confined within the area where the support rib 122 is formed.

[0357] Figure 19 This is a view of multiple switches mounted on a control board according to one embodiment.

[0358] refer to Figure 4 and Figure 19 The control board 750 is mounted on the nozzle base 110. Elements 751 and 752 can be mounted on the top surface of the control board 750, each of which has a switch shape for detecting the operation of the adjustment parts 710, 720 and 730.

[0359] Multiple components 751 and 752 can be mounted spaced apart from each other in a horizontal direction.

[0360] The plurality of elements 751 and 752 may include: a first element 751 that detects a first position of each of the adjustment portions 710, 720 and 730; and a second element 752 that detects a second position of each of the adjustment portions 710, 720 and 730.

[0361] For example, when each of the adjusting parts 710, 720, and 730 is pivoted to one side to move to a first position, each of the adjusting parts 710, 720, and 730 can press the contact point of the first element 751 to open the first element 751. In this case, the pump motor 280 can operate at a first output to discharge water from the water tank 200 at a first amount per unit time.

[0362] When each of the adjustment parts 710, 720 and 730 is pivoted to the other side to move to the second position, each of the adjustment parts 710, 720 and 730 can press the contact point of the second element 752 to open the second element 752.

[0363] In this case, the pump motor 280 can operate at a second output greater than the first output to discharge water from the water tank 200 at a second amount per unit time.

[0364] Additionally, when each of the adjustment units 710, 720, and 730 is located at an intermediate position between the first position and the second position, each of the adjustment units 710, 720, and 730 may not press the contact points of the first element 751 and the second element 752 to stop the operation of the pump motor 280.

[0365] <Drive device>

[0366] Figure 20 This is a view of the first and second drive units as viewed from below, according to one embodiment. Figure 21 This is a view of the first and second drive units as viewed from above, according to one embodiment. Figure 22 This is a view illustrating the motor housing and the structure used to prevent the drive motor from rotating, and Figure 23 This is a view illustrating the state in which the power transmission unit is connected to the drive motor according to one embodiment.

[0367] refer to Figures 20 to 23 The first drive unit 170 and the second drive unit 171 can be horizontally symmetrical to each other.

[0368] 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.

[0369] The motor PCB 350 for driving the motors can be connected to each of the drive motors 182 and 184. The motor PCB 350 can be connected to the drive motors 182 and 184, for example, in an upright position.

[0370] A pair of resistors 352 and 354 can be placed on the motor PCB 350 to improve the electromagnetic interference (EMI) performance of the drive motor. One of the resistors 352 and 354 can be connected to the positive (+) terminal of the drive motor, while the other resistor can be connected to the negative (-) terminal of the drive motor to reduce fluctuations in the output of the drive motor. For example, the pair of resistors 352 and 354 can be arranged horizontally spaced apart from each other on the motor PCB 350.

[0371] Each of the drive units 170 and 171 may include a motor housing. The power transmission unit for transmitting power to drive motors 182 and 184 may be housed within the motor housing.

[0372] For example, the motor housing may include a first housing 172 and a second housing 173 connected to the upper part of the first housing 172.

[0373] With each of the drive motors 182 and 184 mounted in a motor housing, the shaft of each of the drive motors 182 and 184 can extend in the horizontal direction.

[0374] In the power transmission section, the drive shaft 190, which is connected to each of the rotating plates 420 and 440, may have a shaft hole 175 through which it passes in the first housing 172. For example, a portion of the drive shaft 190 may pass through the lower part of the motor housing and protrude downwards.

[0375] The horizontal cross-section of the drive shaft 190 may have a non-circular shape to prevent the drive shaft 190 from rotating relative to each other while connected to the rotating plates 420 and 440.

[0376] Sleeve 174 may be disposed around shaft hole 175 in each of the first housing 172 and the second housing 173. Sleeve 174 may protrude from the bottom surface of each of the first housing 172 and the second housing 173.

[0377] For example, sleeve 174 can be ring-shaped. Therefore, sleeve 174 can be placed in a mounting groove 116a that can be circular in shape.

[0378] Drive motors 182 and 184 can be housed in the first housing 172. In this state, drive motors 182 and 184 can be fixed to the first housing 172 by the motor fixing part 183.

[0379] Each of the drive motors 182 and 184 may have a cylindrical shape. With the axes of each of the drive motors 182 and 184 set horizontally (i.e., with the drive motors 182 and 184 laid flat), the drive motors 182 and 184 can be housed in the first housing 172.

[0380] The motor mounting portion 183 may have a generally semi-circular shape to surround a portion of each of the drive motors 182 and 184 housed in the first housing 172. The motor mounting portion 183 may be secured to the first housing 172 by means of a connecting member such as screws.

[0381] The second housing 173 may include a motor cover 173a that covers a portion of each of the drive motors 182 and 184.

[0382] The motor cover 173a may have, for example, a rounded shape to surround the motor mounting portion 183 outside the motor mounting portion 183.

[0383] For example, the motor cover 173a may have a rounded shape, such that a portion of the second housing 173 protrudes upward.

[0384] Anti-rotation ribs 173a and 173b can be provided on the surface of the motor cover 173a facing the motor fixing part 183 to prevent the motor cover 173a from rotating relative to the motor fixing part 183 while the drive motors 182 and 184 are operating, and a rib receiving slot 183a for accommodating the anti-rotation ribs 173a and 173b can be formed in the motor fixing part 183.

[0385] Although unrestricted, each of the anti-rotation ribs 173a and 173b may have the same width as the rib receiving slot 183a.

[0386] Alternatively, a plurality of anti-rotation ribs 173a and 173b may be configured to be spaced apart from each other on the motor cover 173a along the circumferential direction of the drive motors 182 and 184, and additionally, the plurality of anti-rotation ribs 173a and 173b may be accommodated in a rib receiving slot 183a.

[0387] Here, the maximum width of each of the plurality of anti-rotation ribs 173a and 173b 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.

[0388] The power transmission unit may include a drive gear 185 connected to the shaft of each of the drive motors 182 and 184, and a plurality of transmission gears 186, 187, 188 and 189 for transmitting the rotational force of the drive gear 185.

[0389] The axes A3 and A4 of the drive motors 182 and 184 can extend horizontally. However, the rotation center line of each of the rotating plates 420 and 440 can extend vertically. Therefore, the drive gear 185 can be, for example, a spiral bevel gear.

[0390] The plurality of transmission gears 186, 187, 188, and 189 may include a first transmission gear 186 that meshes with a drive gear 185. The center of rotation of the first transmission gear 186 may extend in a vertical direction. The first transmission gear 186 may include a spiral bevel gear such that the first transmission gear 186 meshes with the drive gear 185.

[0391] In addition, the first transmission gear 186 may also include a helical gear disposed below the spiral bevel gear as a two-stage gear.

[0392] The plurality of transmission gears 186, 187, 188 and 189 may also include a second transmission gear 187 that meshes with the first transmission gear 186.

[0393] The second transmission gear 187 can be a two-stage helical gear. That is, the second transmission gear can include two helical gears arranged in a vertical direction, and the upper helical gear can be connected to the helical gear of the second transmission gear 187.

[0394] The plurality of transmission gears 186, 187, 188 and 189 may also include a third transmission gear 188 that meshes with the second transmission gear 187.

[0395] The third transmission gear 188 can be a two-stage helical gear. That is, the third transmission gear can include two helical gears arranged in a vertical direction, and the upper helical gear can be connected to the lower helical gear of the second transmission gear 187.

[0396] The plurality of transmission gears 186, 187, 188 and 189 may further include a fourth transmission gear 189 that meshes with the lower helical gear of the third transmission gear 188. The fourth transmission gear 189 may be a helical gear.

[0397] 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. In addition, the upper bearing 191 can be connected to the upper end of the drive shaft 190 passing through the fourth drive gear 189, and the lower bearing 191a can be connected to the drive shaft 190 below the fourth drive gear 189. The drive shaft 190 can rotate together with the fourth drive gear 189.

[0398] Figure 24 This is a view illustrating the state in which the power transmission unit is connected to the drive motor according to another embodiment.

[0399] Except for the power transmission section, this embodiment is the same as the previous embodiment.

[0400] refer to Figure 24 According to this embodiment, the power transmission unit may include a drive gear 610 connected to the shaft of each of the drive motors 182 and 184.

[0401] The drive gear 610 may be a worm gear. The rotation axis of the drive gear 610 may extend horizontally. The bearing 640 may be connected to the drive gear 610. The first housing 600 supporting the drive motors 182 and 184 may include a motor support 602 supporting the drive motors 182 and 184 and a bearing support 604 supporting the bearing 640.

[0402] The power transmission unit may also 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.

[0403] The plurality of transmission gears 620, 624 and 628 may further include a first transmission gear 620 that meshes with the drive gear 610. The first transmission gear 620 may include an upper worm gear that meshes with the drive gear 610.

[0404] As described above, since the drive gear 610 and the first transmission gear 620 mesh with each other in the form of a worm gear, the noise generated by friction while transmitting the rotational force of the drive gear 610 to the first transmission gear 620 can be reduced.

[0405] The first transmission gear 620 may include a helical gear disposed below the upper worm gear as a two-stage gear.

[0406] The first transmission gear 620 can be rotatably connected to a first shaft 622 extending in a vertical direction. The first shaft 622 can be fixed to the first housing 600.

[0407] Therefore, the first transmission gear 620 can rotate relative to the fixed first shaft 622. According to this embodiment, the first transmission gear 620 can be configured to rotate relative to the first shaft 622, and therefore, bearings may be unnecessary.

[0408] The plurality of transmission gears 620, 624 and 628 may also include a second transmission gear 624 that meshes with the first transmission gear 620. For example, the second transmission gear 624 may be a helical gear.

[0409] The second transmission gear 624 can be rotatably connected to a second shaft 626 extending in a vertical direction. The second shaft 626 can be fixed to the first housing 600.

[0410] Therefore, the second transmission gear 624 can rotate relative to the fixed second shaft 626. According to this embodiment, the second transmission gear 624 can be configured to rotate relative to the second shaft 626, and therefore, bearings may be unnecessary.

[0411] The plurality of transmission gears 620, 624 and 628 may also include a third transmission gear 628 that meshes with the second transmission gear 624. The third transmission gear 628 may be, for example, a helical gear.

[0412] 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 to rotate together with the third transmission gear 628.

[0413] The bearing 632 can be connected to the drive shaft 630, so that the drive shaft 630 can rotate smoothly.

[0414] <Arrangement of the drive mechanism on the nozzle base>

[0415] Figure 25 This is a plan view illustrating a state in which a drive device according to one embodiment is mounted on a nozzle base, and Figure 26 This is a front view illustrating the state in which a drive device according to one embodiment is mounted on a nozzle base.

[0416] However, examples are shown Figure 25 The second housing of the motor housing has been removed.

[0417] refer to Figure 25 and Figure 26 As described above, the drive units 170 and 171 can be configured to be horizontally spaced apart from each other on the nozzle base 110.

[0418] Here, the center line A2 of the second passage 114 can be set between the first drive device 170 and the second drive device 171.

[0419] Although unrestricted, the axis A3 of the first drive motor 182 and the axis A4 of the second drive motor 184 can extend in the front-rear direction.

[0420] The axis A3 of the first drive motor 182 and the axis A4 of the second drive motor 184 can be parallel to each other or can be at a predetermined angle between them.

[0421] In this embodiment, the virtual line A5 connecting the axis A3 of the first drive motor 182 to the axis A4 of the second drive motor 184 can pass through the second passage 114. This is because each of the drive motors 182 and 184 can be positioned close to the rear side of the suction nozzle 1. Therefore, an increase in the height of the suction nozzle 1 due to each of the drive motors 182 and 184 can be prevented.

[0422] In order to minimize the increase in height of the nozzle 1 caused by each of the drive devices 170 and 171, the drive gear 185 can be set between the drive motors 182 and 184 and the first passage 112 with the drive gear 185 connected to the shaft of the drive motors 182 and 184.

[0423] In this case, since each of the drive motors 182 and 184, which have the longest vertical length among the drive units 170 and 171, is positioned close to the rear side inside the nozzle body 10, the increase in height at the front end of the nozzle 1 can be minimized.

[0424] Since the drive units 170 and 171 are positioned close to the rear of the nozzle 1, and the water tank 200 is positioned above the drive units 170 and 171, the center of gravity of the nozzle 1 may tilt 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.

[0425] Therefore, in this embodiment, the connecting chamber of the water tank 200 (see...) Figure 6 Reference numeral 226) can be positioned between the first passage 112 and the drive devices 170 and 171 in the front-back direction relative to the nozzle 1.

[0426] In this embodiment, the rotation centers C1 and C2 of the rotating plates 420 and 440 can correspond to the rotation center of the drive shaft 190.

[0427] The axes A3 and A4 of the drive motors 182 and 184 can be set in the area between the rotation centers C1 and C2 of the rotating plates 420 and 440.

[0428] In addition, each 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.

[0429] Alternatively, each of the drive motors 182 and 184 can be configured to vertically overlap with the virtual line connecting the first rotation center C1 to the second rotation center C2.

[0430] <Rotating Plate>

[0431] Figure 27This is a view of the rotating plate as seen from above, according to one embodiment. Figure 28 This is a view of the rotating plate when viewed from below, according to one embodiment.

[0432] refer to Figure 27 and Figure 28 Each of the rotating plates 420 and 440 may be provided with a shaft connection portion 421, and the drive shaft 190 may be connected to the central portion of the shaft connection portion 421.

[0433] For example, the drive shaft 190 can be inserted into the shaft connection portion 421. For this purpose, a shaft receiving groove 422 for inserting the drive shaft 190 can be formed in the shaft connection portion 421.

[0434] With the drive shaft 190 connected to the shaft connection part 421, the connecting members below the rotating plates 420 and 440 can be inserted into the shaft connection part 421 to connect to the drive shaft 190.

[0435] Rotating plates 420 and 440 may include a plurality of water passage holes 424 disposed radially outside the shaft connection portion 421.

[0436] In this embodiment, since the rotating plates 420 and 440 rotate with the cloths 402 and 404 attached to the underside of the rotating plates 420 and 440, the plurality of water holes 424 can be arranged to be spaced apart from each other in the circumferential direction relative to the shaft connection portion 421, so that water passes through the rotating plates 420 and 440 so as to be supplied to the cloths 402 and 404 smoothly.

[0437] Multiple water passages 424 can be divided by multiple ribs 425. Here, each of these ribs 425 can be set to be lower than the top surface 420a of each of the rotating plates 420 and 440.

[0438] Since the rotating plates 420 and 440 rotate, centrifugal force can act on the rotating plates 420 and 440. It is necessary to prevent the water injected into the rotating plates 420 and 440 from flowing radially outward in a state where the water does not pass through the water passage 424 in the rotating plates 420 and 440 due to centrifugal force.

[0439] Therefore, water-blocking ribs 426 can be provided radially outside the water passages 424 on the top surface 420a of each of the rotating plates 420 and 440. The water-blocking ribs 426 can be continuously provided circumferentially. That is, multiple water passages 424 can be provided in the inner region of the water-blocking ribs 426. The water-blocking ribs 426 can have, for example, an annular shape.

[0440] A mounting groove 428 may be formed in the bottom surface 420b of each of the rotating plates 420 and 440, in which an attachment unit for attaching each of the cloths 402 and 404 may be mounted. The attachment unit may be Velcro.

[0441] Multiple mounting recesses 428 can be configured to be spaced apart from each other in the circumferential direction relative to the rotation centers C1 and C2 of the rotating plates 420 and 440. Therefore, multiple attachment units can be provided on the bottom surface 420b of the rotating plates 420 and 440.

[0442] 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.

[0443] For example, water passage holes 424 and mounting grooves 428 can be arranged sequentially in a radially outward direction from the rotation centers C1 and C2 of the rotating plates 420 and 440.

[0444] When in contact with the attachment unit, the contact ribs 430 of each of the contact cloths 402 and 404 can be provided on the bottom surface 420b of each of the rotating plates 420 and 440.

[0445] The contact rib 430 can protrude downward from the bottom surface 420b of each of the rotating plates 420 and 440.

[0446] The contact rib 430 can be arranged radially outside the water passage 424 and can be continuously arranged circumferentially. For example, the contact rib 430 can have an annular shape.

[0447] For example, since the cloths 402 and 404 may deform as fibrous materials, when the cloths 402 and 404 are attached to the rotating plates 420 and 440 via the attachment unit, there may be a gap between the cloth 402 or the cloth 404 and the bottom surface 420b of each of the rotating plates 420 and 440.

[0448] As described above, when the gap between each of the rags 402 and 404 and the bottom surface 420b of the rotating plates 420 and 440 is large, water can flow to the outside through the gap between the bottom surface 420b of each of the rotating plates 420 and 440 and each of the rags 402 and 404, and is not absorbed into the rags 402 and 404 when passing through the water hole 424.

[0449] However, according to this embodiment, when the cloths 402 and 404 are connected to the rotating plates 420 and 440, the contact ribs 430 can contact each of the cloths 402 and 404, and when the nozzle 1 is placed on the floor, the contact ribs 430 can press each of the cloths 402 and 404 by the weight of the nozzle 1.

[0450] Therefore, gaps can be prevented between the bottom surface 420b of each of the rotating plates 420 and 440 and the top surface of each of the cloths 402 and 404 due to the contact rib 430, and thus, a horizontal and stable supply can be made to the cloths 402 and 404 through the water passage 424.

[0451] Water supply access route

[0452] Figure 29 This is a view of a water supply passage for supplying water from a water tank to a rotating cleaning unit, according to one embodiment. Figure 30 This is a view of a valve inside a water tank according to one embodiment, and Figure 31 This is a view illustrating the state in which the valve is installed on the nozzle housing and the discharge port is open.

[0453] Figure 32 This is a view illustrating the state in which a rotating plate is connected to the nozzle body according to one embodiment, and Figure 33 This is a view illustrating the arrangement of an injection nozzle in a suction nozzle body according to one embodiment.

[0454] Figure 34 This is a conceptual view illustrating a process of supplying water from a water tank to a rotating cleaning unit according to one embodiment.

[0455] refer to Figures 29 to 34 The water supply passage according to this embodiment may include a first supply pipe 282 connected to the valve control 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.

[0456] The water pump 270 may include a first connection port 272 connected to a first supply pipe 282 and a second connection port 274 connected to a second supply pipe 284. The first connection port 272 may be an inlet for the water pump 270, while the second connection port 274 may be an outlet.

[0457] Additionally, the water supply passage may include a connector 285 that connects to the second supply pipe 284.

[0458] The connector 285 may have a shape in which the first connecting portion 285a, the second connecting portion 285b, and the third connecting portion 285c are arranged in a T-shape. The second supply tube 284 may be connected to the first connecting portion 285a.

[0459] The water supply passage may also include a first branch pipe 286 connected to the second connection 285b and a second branch pipe 287 connected to the third connection 285c.

[0460] Therefore, water flowing through the first branch pipe 286 can be supplied to the first rotating cleaning unit 40, and water flowing through the second branch pipe 287 can be supplied to the second rotating cleaning unit 41.

[0461] The connector 285 can be located at the center of the nozzle body 10, so that the branch tubes 286 and 287 have the same length.

[0462] For example, connector 285 can be positioned below passage cover 136 and above passage forming portion 150. That is, connector 285 can be positioned vertically above second passage 114. Therefore, substantially the same amount of water can be distributed from connector 285 to branch pipes 286 and 287.

[0463] In this embodiment, the water pump 270 can be installed at a point on the water supply path.

[0464] Here, the water pump 270 can be disposed between the valve operating part 144 and the first connection part 285a of the connector 285, so that the water discharged from the water tank 200 can be regulated by using a minimum number of water pumps.

[0465] In this embodiment, the water pump 270 can be mounted on the nozzle cover 130 with the valve operating part 144 positioned close to it. For example, the valve operating part 144 and the water pump 270 can be positioned on one side, either the left or right, relative to the center line A2 of the second passage 114 in the nozzle body 10.

[0466] Therefore, the length of the first supply pipe 282 can be reduced. As a result, the length of the water supply path can be reduced.

[0467] Each of the branch pipes 286 and 287 can be connected to the injection nozzle 149. According to one embodiment, the injection nozzle 149 can also form a water supply passage.

[0468] As described above, the injection nozzle 149 may include a connection portion 149a that is connected to each of the branch pipes 286 and 287.

[0469] The injection nozzle 149 may also include a nozzle end 149b. The nozzle end 149b extends downward through the nozzle orifice 119. That is, the nozzle end 149b may be located outside the nozzle housing 100.

[0470] As described above, when the nozzle tip 149b is located outside the nozzle housing 100, water injected through the nozzle tip 149b can be prevented from being introduced into the nozzle housing 100.

[0471] Here, in order to prevent damage to the nozzle tip 149b exposed to the outside of the nozzle housing 100, an upwardly recessed groove 119a can be formed in the bottom surface of the nozzle base 110, and the nozzle tip 149b can be disposed in the groove 119a while passing through the nozzle hole 119. That is, the nozzle hole 119 can be formed in the groove 119a.

[0472] Additionally, the nozzle tip 149b can be positioned in the groove 119a to face the rotating plates 420 and 440.

[0473] Therefore, water injected from the nozzle tip 149b can pass through the water passage 424 of each of the rotating plates 420 and 440.

[0474] The line that vertically connects the first rotation center C1 to the center line A1 of the first passage 112 can be called the first connecting line A6, and the line that vertically connects the second rotation center C2 to the axis A1 of the first passage 112 can be called the second connecting line A7.

[0475] Here, the first connecting line A6 and the second connecting line A7 can be positioned in the area between a pair of injection nozzles 149 for supplying water to the rotating cleaning sections 40 and 41.

[0476] This is because the components constituting the drive devices 170 and 171 exist in the area between the first connecting line A6 and the second connecting line A7, so the injection nozzle 149 is configured to prevent the components from interfering with each other.

[0477] In addition, the horizontal distance between the injection nozzle 149 and the center line A1 of the first passage 112 can be less than the horizontal distance between each of the rotation centers C1 and C2 and the center line A1 of the first passage 112.

[0478] Valve 230 may include a movable part 234, an opening / closing part 238, and a fixed part 232.

[0479] The fixing part 232 can be fixed to the fixing rib 217 that protrudes upward from the first body 210.

[0480] An opening 232a through which the movable part 234 passes can be formed in the fixed part 232.

[0481] The fixed part 232 can restrict the upward movement of the movable part 234 from the fixed part 232 to a predetermined height when it is connected to the fixed rib 217.

[0482] A portion of the movable part 234 can move vertically while passing through the opening 232a. When the movable part 234 is in an upward position, water can pass through the opening 232a.

[0483] The movable portion 234 may include: a first extension 234a that extends downward to engage the open / close portion 238; and a lower extension 234b that extends upward to pass through the opening 232a.

[0484] The movable part 234 can be elastically supported by an elastic member 263. The elastic member 263 can be, for example, a coil spring. The elastic member 263 can have one end fixed to the fixed part 232 and another end supported by the movable part 234.

[0485] The elastic member 263 can provide a force to the movable part 234, which moves downward by the force.

[0486] The opening / closing part 238 can selectively open the discharge port 216 by moving the movable part 234 up and down.

[0487] At least a portion of the opening / closing portion 238 may have a diameter larger than that of the discharge hole 216, such that the opening / closing portion 238 blocks the discharge hole 216.

[0488] The open / close section 238 may be made of, for example, a rubber material to prevent water leakage when the drain hole 216 is blocked.

[0489] The elastic force of the elastic member 263 can act on the movable part 234, so that unless an external force is applied to the movable part 234, the state in which the opening / closing part 238 blocks the discharge hole 216 is maintained.

[0490] When the water tank 200 is installed on the suction nozzle body 10, the movable part 234 can be moved by the valve operating part 144.

[0491] As described above, the valve operating part 144 is provided below the nozzle cover 130 for connection to the nozzle cover 130. A water passage 145 for water discharged from the water tank 200 can be formed in the nozzle cover 130.

[0492] The valve operating part 144 may include a pressing part 144a passing through the water inlet 145. The pressing part 144a may protrude upward from the bottom surface of the nozzle cover 130 while passing through the water inlet 145 of the nozzle cover 130.

[0493] The valve operating part 144 can form a water supply passage together with the bottom surface of the suction nozzle cover 130. In addition, the connecting pipe 144c connected to the first supply pipe 282 can be provided on one side of the valve operating part 144.

[0494] The diameter of the water passage 145 can be larger than the outer diameter of the pressing part 144a, so that water flows smoothly when the pressing part 144a passes through the water passage 145.

[0495] When the water tank 200 is installed on the nozzle body 10, the pressing part 144a can be inserted into the discharge hole 216 of the water tank 200. When the pressing part 144a is inserted into the discharge hole 216 of the water tank 200, the pressing part 144a can press the movable part 234.

[0496] Therefore, the movable part 234 can rise, and the opening / closing part 238 connected to the movable part 234 can rise together with the movable part and then be spaced apart from the discharge hole 216 to open the discharge hole 216.

[0497] As a result, the water in the water tank 200 can be discharged through the drain hole 216 to flow through the water inlet 145 along the valve operating part 144, and then supplied to the first supply pipe 282 connected to the connecting pipe 144c.

[0498] Water supplied to the first supply pipe 282 can be introduced into the water pump 270 to flow to the second supply pipe 284. Water flowing to the second supply pipe 284 can flow through the connector 285 to the first branch pipe 286 and the second branch pipe 287. In addition, water flowing to each of the branch pipes 286 and 287 can be injected from the injection nozzle 149 into the rotating cleaning sections 40 and 41.

[0499] Water injected from the injection nozzle 149 can pass through the water passage 424 of each of the rotating plates 420 and 440, and is then supplied to the mop cloths 402 and 404. With water supplied and absorbed into the mop cloths 402 and 404, the mop cloths 402 and 404 can wipe the floor while rotating.

[0500] According to the proposed implementation, a channel for sucking up foreign objects on the floor can be provided, and in addition, a rotating plate with a rag attached can rotate to clean the floor, thereby improving cleaning performance.

[0501] In addition, a water tank can be installed on the nozzle to supply water to the rag, thereby improving user convenience.

[0502] According to this embodiment, the passage can extend forward and backward from the center portion of the suction nozzle, and the drive device for rotating the cleaning part can be provided on both sides of the passage to prevent the length of the passage through which air flows from increasing, thereby preventing the passage from losing more air.

[0503] Furthermore, according to this embodiment, since the multiple rotating components with the cloth attached are driven independently by multiple motors, even if some of the multiple motors fail, cleaning can be performed by the other motors.

[0504] Furthermore, since the water tank is designed to surround the drive unit of the cover, the amount of water to be stored in the water tank can be increased, and the overall height of the suction nozzle can be prevented from increasing.

Claims

1. A cleaner, the cleaner comprising: Suction motor; A suction nozzle is placed on the floor surface and uses the suction force generated by the suction motor to draw in air containing foreign objects on the floor surface. as well as A connecting tube, which connects to the central portion of the rear surface of the suction nozzle, guides the air drawn from the suction nozzle to the cleaner body, where the suction motor is located. The suction nozzle includes: A suction nozzle body having a suction passage configured to suction air containing foreign matter and connected to the connecting tube; A rotating cleaning section is rotatably disposed below the nozzle body and is provided with a rotating plate for attaching a cleaning cloth. A driving device is disposed in the nozzle body, the driving device including a drive motor, the drive motor being configured to drive the rotating cleaning part and being disposed in the nozzle body spatially separated from the water tank and the suction passage; The water tank is disposed on the upper part of the suction nozzle body to store water and cover the drive device; A water supply passage is provided in the nozzle body and is configured to supply water from the water tank to the upper surface of the rotating plate. A water pump, wherein the water pump is disposed on the water supply passage and has a pump motor, for controlling the water discharged from the water tank; and A water regulating unit is disposed at the rear of the nozzle body to be exposed to the user, and the rear of the nozzle body is defined as the rear side of the drive motor. The water regulating unit is configured to change the amount of water discharged from the water tank and turn the pump motor on / off by moving horizontally along the rear of the suction body.

2. The cleaner according to claim 1, wherein, The water regulating unit is movably supported on the inner surface of the rear part of the nozzle body.

3. The cleaner according to claim 2, wherein, The water regulating unit is configured to be operated by the user's feet or hands while the user is standing.

4. The cleaner according to claim 3, wherein, The water regulating unit is configured to regulate the rotational speed (rpm) of the pump motor.

5. The cleaner according to claim 4, wherein, The water regulating unit is moved in the horizontal direction by the user's force. The water regulating unit includes: The first part, the first part being disposed on one side of the water regulating unit; and The second part, integrated with the first part, is located on the other side of the water regulating unit. The first part and the second part are configured to move in the horizontal direction.

6. The cleaner according to claim 5, wherein, The pump motor rotates at a first rotational speed (rpm) while the first part is moving in a first direction, and rotates at a second rotational speed (rpm) greater than the first rotational speed (rpm) while the second part is moving in a second direction.

7. The cleaner according to claim 6, wherein, The first direction and the second direction are opposite to each other.

8. The cleaner according to claim 7, wherein, When the water regulating unit is set in the central position, the pump motor is turned off.

9. The cleaner according to claim 4, wherein, The suction nozzle also includes: A control board, which is configured as a switching element to electrically connect the water regulating unit and the water pump. The control board is disposed inside the nozzle body and located below the water tank.

10. The cleaner according to claim 9, wherein, The control board includes a first element and a second element, which are operated to control the amount of water discharged by the pump motor.

11. The cleaner according to claim 10, wherein, The water regulating unit is configured to press the contact point of the first element when the water regulating unit is moved to one side, and The water regulating unit is configured to press the contact point of the second element when the water regulating unit is moved to the other side.

12. The cleaner according to claim 11, wherein, When the first element is pressed by the water regulating unit, the pump motor is configured to operate with a first output to discharge water at a first amount per unit time.

13. The cleaner according to claim 12, wherein, When the second element is pressed by the water regulating unit, the pump motor is configured to operate with a second output greater than the first output to discharge water at a second amount per unit time.

14. The cleaner according to claim 13, wherein, When the water regulating unit is positioned in the middle between the one side and the other side, the pump motor is configured to stop operating by not contacting the contact points of the first element and the second element.

15. The cleaner according to claim 1, wherein, The water regulating unit is located at the rear of the nozzle body, thus being laterally spaced relative to the connecting tube.

16. The cleaner according to claim 1, wherein, The water tank forms the upper surface of the suction nozzle, thus providing a space for storing water to be supplied to the rag.

17. The cleaner according to claim 16, wherein, The lower surface of the suction nozzle body has a nozzle hole for setting an injection nozzle, wherein the injection nozzle is configured to discharge water downwards, thereby supplying water from the water tank to the rotating cleaning part.

18. The cleaner according to claim 17, wherein, The rotating cleaning section includes a first rotating plate and a second rotating plate spaced apart from each other in the horizontal direction of the suction nozzle body, and The rotating cleaning part is located behind the suction passage that extends horizontally on the nozzle body.

19. The cleaner according to claim 18, wherein, The horizontal distance between the injection nozzle and the suction passage extending in the horizontal direction is less than the horizontal distance between the rotation center of each of the first and second rotating plates and the suction passage extending in the horizontal direction.

20. The cleaner according to claim 19, wherein, The rotating plate includes water-blocking ribs formed by projecting upward from the upper surface of the rotating plate, and The water-blocking ribs are located radially outside the injection nozzle relative to each of the rotation centers.

21. The cleaner according to claim 20, wherein, The rotating plate also includes a water passage hole through which water discharged from the injection nozzle passes, and The water passage is located on the inner side of the water-blocking rib based on each of the rotation centers.

22. The cleaner according to claim 21, wherein, The water-blocking ribs have a ring shape.

23. The cleaner according to claim 17, wherein, The lower surface of the nozzle body has a groove that is recessed upward from the lower surface of the nozzle body, and The nozzle orifice is formed in the groove.

24. The cleaner according to claim 23, wherein, The injection nozzle is disposed at the nozzle orifice and within the groove.

25. The cleaner according to claim 24, wherein, The lower end of the injection nozzle is positioned at the same height as or above the lower surface of the suction body.

26. The cleaner according to claim 1, wherein, The rotating cleaning section includes a first rotating cleaning section and a second rotating cleaning section spaced apart from each other in the horizontal direction of the nozzle body. The water supply pathway includes: Water discharged from the drain hole of the water tank flows through the supply pipe; A connector that connects to the supply pipe; A first branch pipe, connected to the connector, supplies water to the first rotating cleaning section; and A second branch pipe is connected to the connector to supply water to the second rotating cleaning section.

27. The cleaner according to claim 26, in, The supply pipe includes: A first supply pipe, the first supply pipe being connected to the inlet of the water pump; and A second supply pipe is connected to the outlet of the water pump and the connector.

Images