Water tank assembly and cleaning head

Abstract

The water tank assembly comprises a water tank body and a sealing side wall, the interior of the water tank body is hollow, a containing cavity is formed in the water tank body, the two ends of the water tank body are in a transverse semi-barrel shape, the middle of the water tank body is in a square column shape, and the middle of the upper portion of the water tank body is in a notch shape capable of containing a hinge head assembly to rotate. A water inlet is formed in the top wall of one end of the water tank body; a water outlet is formed in the middle of the lower part of the water tank body; the hinge head clamping cover body of the cleaning head can clamp the hinge assembly between the cleaning head shell body and the water tank body and between the cleaning head shell body and the hinge head clamping cover body through the connecting mechanism. The cleaning head comprises a cleaning head shell assembly, a cleaning roller, an extrusion roller and a water tank assembly, a driving motor is installed on the cleaning head shell assembly to drive the cleaning roller to rotate to wipe the floor, and a clean water outlet in the cleaning head shell assembly can spray out clean water to directly wash the surface of the cleaning roller.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a water tank assembly and a cleaning head. BACKGROUND

[0002] The early ground cleaning tools used by people are brooms, mops, floor wipes, etc., which mainly rely on manual operation of people to complete the cleaning work. With the progress of science and technology, people's requirements for ground cleaning tools have gradually increased. First appeared is the dust collector, which relies on electric power supply to generate negative pressure to suck up garbage, dust and other garbage on the ground. From the cleaning means and the flow path of small particles of garbage and large particles of garbage, this kind of technology is usually classified as air dust circulation technology. But due to the limitation of its working principle, the dust collector cannot clean some garbage and stains firmly attached to the ground, so a new "water dust circulation" floor washing machine appears, which drives the cleaning cylinder to wipe the ground through the operation of the motor, and the floor cleaning machine is also equipped with a water supply system and a water tank to clean the cleaning cylinder, thereby perfectly realizing the cleaning of the ground.

[0003] The applicant's Chinese patent CN111166256B discloses a self-cleaning mop sweeper, which comprises a shell, a cleaning module, a garbage box, a roller, a shovel strip, a water pressing baffle and a scraping strip assembly installed on the shell respectively, the shovel strip has an arc-shaped working surface, one end of which is in contact with the ground during work, and the other end is located above the garbage box, the arc-shaped working surface and the outer circumferential surface of the roller form a garbage channel, one end of the water pressing baffle interferes with the sponge layer of the roller, the scraping strip assembly comprises a friction end and a drainage end, which respectively interfere with the sponge layer of the roller, the roller, the water pressing baffle, the scraping strip assembly and the shell jointly form a water tank, the shell is provided with a water tank inlet and a water tank outlet, and a water circulation module comprises a water tank installed on the shell, the water tank comprises a sewage box, a filter box and a purified water box, the sewage box is connected with the water tank outlet and the filter box respectively, and the purified water box is connected with the water tank inlet and the filter box respectively. The self-cleaning mop sweeper of the present application can realize self-cleaning of the roller, and has very good cleaning effect on sticky garbage.

[0004] The applicant's Chinese patent CN223009072U discloses an integrated water tank for a scrubber, comprising a water tank body provided with independent cavities and sewage cavities, a water outlet mechanism for clean water output and sewage input is arranged on one end face of the water tank body, and a water tank seat is arranged on the other end face, the water tank seat is provided with a water tank fixing mechanism and a sewage discharge mechanism for discharging sewage from the sewage cavities, a clean water inlet mechanism for communicating with the cavities is arranged on the side face of the water tank body, the water outlet mechanism comprises a bottom cover matched with the end part of the water tank body, mounting holes for fixing a clean water valve for communicating with the cavities and a sewage valve for communicating with the sewage cavities are arranged on the bottom cover, a bottom cover sealing layer is arranged between the bottom cover and the end part of the water tank body, and the bottom cover sealing layer comprises a sealing body and sealing parts arranged on the sealing body and respectively contacting the mounting holes and the water tank body. The integrated water tank can be pulled out from the head in a pull-out manner, when the integrated water tank is installed to the head, the water tank fixing mechanism realizes the fixation of the integrated water tank and the head.

[0005] The applicant's Chinese patent CN222149927U discloses a cleaning head shell and a cleaning head mechanism, the cleaning head shell is used for installing a cleaning roller, a water tank and a brush assembly of a scrubber, the cleaning head shell comprises a cleaning head shell body and a detachable upper cover, the cleaning head shell body has a left side wall and a right side wall, the right side wall is used for fixing a driving motor for driving the cleaning roller to rotate and clamping the brush assembly with a magnetic attraction part, the left side wall is provided with a transmission assembly for transmitting power from the cleaning roller to the brush assembly, the cleaning roller and the brush assembly are clamped between the left side wall and the right side wall, and the water tank can be transversely inserted into or pulled out of the middle rear end of the cleaning head shell body; the detachable upper cover is arranged on the open part of the front end of the cleaning head shell body for clamping the cleaning roller and the brush assembly; wherein the right side wall is magnetically attracted to the magnetic attraction piece at one end of the brush assembly, so that the brush assembly is more smooth and light when being installed to the right side wall.

[0006] In the prior art, the water tank assembly is generally inserted transversely into the cleaning head of the scrubber or clamped longitudinally on the vertical rod of the scrubber, so that the overall weight of the scrubber is still very heavy, and the user still feels very heavy when pushing and pulling the scrubber to clean, and a technical solution that can make the scrubber have a lighter operation feeling is urgently needed. SUMMARY

[0007] The present application provides a water tank assembly and a cleaning head, which can realize "water dust circulation" while avoiding the problem of excessive overall weight of the scrubber and heavy feeling of the user caused by the installation of the water tank assembly on the vertical rod or the head of the scrubber. The specific technical solution is as follows:

[0008] In a first aspect, the present application provides a water tank assembly that can be installed in a cleaning head, comprising:

[0009] The water tank body is internally hollowed to form a cavity, and has a horizontal semi-cylindrical shape at both ends and a square column shape at the middle part. The water tank body is provided with an open top surface at a unique vertical surface. The upper middle part of the water tank body is provided with a notch for accommodating the rotation of the hinge head assembly. The middle part of the water tank body is provided with a connecting mechanism. The top wall of one end of the water tank body is provided with a water inlet. The lower middle part of the water tank body is further provided with a water outlet.

[0010] The sealing side wall is provided with a sealing side wall avoiding notch corresponding to the avoiding notch.

[0011] The hinge head of the cleaning head is clamped between the hinge assembly, the hinge head cover body and the water tank body through the connecting mechanism.

[0012] In one or some optional embodiments, the water tank body is provided with a point gluing groove or an ultrasonic welding groove at the opening. The water tank body is sealed with the sealing side wall at the point gluing groove or the ultrasonic welding groove.

[0013] In one or some optional embodiments, the water tank body is provided with an avoiding notch at one end near the opening groove. The sealing side wall is provided with a sealing side wall avoiding notch corresponding to the avoiding notch.

[0014] In one or some optional embodiments, the lower middle part of the water tank body is further provided with a pipeline channel for connecting the water outlet and the water pump installed in the hinge head assembly. The water outlet is a water outlet connector protruding to the side of the pipeline channel.

[0015] In one or some optional embodiments, the top wall of one end of the water tank body is provided with an opening groove. The water inlet is arranged on the opening groove.

[0016] In one or some optional embodiments, the water tank assembly further comprises:

[0017] The flip cover assembly can be rotated to open / close the opening groove.

[0018] In one or some optional embodiments, the flip cover assembly comprises a flip cover body. The flip cover body is provided with a sealing edge extending downward opposite to the water inlet. A sealing ring is sleeved on the outer wall of the sealing edge. The sealing edge seals the water inlet through the sealing ring. A pin shaft is arranged at the other end of the flip cover body. The pin shaft is clamped in the pin hole on the surrounding wall of the opening groove. The flip cover body can be rotated around the pin shaft to open / close the water inlet.

[0019] In one or some optional embodiments, the flip cover body is provided with a ventilation hole communicating with the cavity opposite to the water inlet. A one-way valve is sleeved on the side of the ventilation hole facing the water inlet. The water in the cavity cannot overflow from the ventilation hole.

[0020] In one or some optional embodiments, the first connecting seat is arranged on the top wall of the middle part of the water tank body, and the second connecting seat is arranged on the front wall of the middle part of the water tank body.

[0021] In one or some optional embodiments, the two connecting ears are arranged at the two ends of the sealing side wall, and the water tank assembly and the cleaner head shell body are fixedly connected through the two connecting ears.

[0022] In the second aspect, the application provides a cleaner head, comprising:

[0023] The cleaner head shell assembly comprises a cleaner head shell body provided with two side walls, one of which is fixedly connected with a hinged seat, the hinged seat is hinged to one end of the driving motor, and the output end of the other end of the driving motor is clamped with the other side wall;

[0024] The cleaning roller is sleeved on the driving motor, and the output end is coupled to drive the cleaning roller to rotate and scrub the surface to be cleaned; the cleaner head shell body is provided with a water guide tip portion that abuts against the outer layer of the cleaning roller in a saturated state and guides the sewage;

[0025] The extrusion roller is rotatably clamped between the two side walls, and is arranged eccentrically relative to the cleaning roller to approach the water guide tip portion;

[0026] The water tank assembly is detachably connected with the cleaner head shell assembly, and the water tank assembly provides clean water for flushing the surface of the cleaning roller;

[0027] Clean water can be sprayed from the clean water outlet arranged on one of the side walls to directly flush the surface of the cleaning roller, the cleaner head shell body extends upward away from the cleaning roller at a position away from the extrusion roller relative to the water guide tip portion, and the water guide tip portion, the anti-overflow plate, the extrusion roller and the cleaning roller form a water tank space.

[0028] In one or some optional embodiments, the cleaner head further comprises:

[0029] The garbage box can be inserted / extracted into / from the cleaner head shell body through one of the side walls, and the cleaning roller can bring dry garbage into the garbage box when rotating and wiping the ground;

[0030] In one or some optional embodiments, in a cross section perpendicular to the axial direction of the cleaning roller, the cleaner head shell body is further provided with a transverse partition plate extending away from the cleaning roller and connected with the water guide tip portion above the garbage box, and the other end of the transverse partition plate extends upward with a vertical wall, and the two side walls, the water guide tip portion, the transverse partition plate and the vertical wall jointly enclose a sewage containing cavity.

[0031] In one or some optional embodiments, the anti-overflow plate is provided with a hole or a groove connecting the water tank space and the sewage containing cavity.

[0032] In one or some optional embodiments, the hole or groove is provided with a one-way filtering device on one side of the sewage container cavity, and the sewage guided by the water guide tip can only flow to the sewage container cavity in one direction through the one-way filtering device from the sink space.

[0033] In one or some optional embodiments, the cleaning head further comprises:

[0034] The upper cover is arranged above the squeezing roller and can be rotated to open along an axis parallel to the cleaning roller on one side close to the cleaning roller.

[0035] In one or some optional embodiments, the lower surface of the upper cover extends downward in an axial direction parallel to the cleaning roller and is provided with a spill-proof rim, which is engaged with the top end of the spill-proof plate to isolate the upper part of the sink space from the sewage container cavity.

[0036] In one or some optional embodiments, the lower surface of the upper cover is provided with an abutting portion, which is abutted with the squeezing roller to clean the surface of the squeezing roller.

[0037] In one or some optional embodiments, the abutting portion is abutted with the squeezing roller at intervals in an axial direction of the squeezing roller, and the abutting portion is a plurality of dot-shaped protrusions arranged at intervals.

[0038] In one or some optional embodiments, the cleaning roller comprises a cleaning roller body, and the surface of the cleaning roller body is provided with a sponge layer.

[0039] In one or some optional embodiments, when the sponge layer of the cleaning roller body is in a non-saturated state, a gap is formed between the lower surface of the water guide tip and the cleaning roller body, and the exuded sewage drops on the cleaning roller body or in the cleaning head housing body.

[0040] In one or some optional embodiments, the squeezing roller is driven to rotate by the friction force of the cleaning roller body.

[0041] In one or some optional embodiments, the output end of the driving motor on the other end is connected with an end torsion assembly, and the end torsion assembly is clamped with the other side wall.

[0042] In one or some optional embodiments, the cleaning head further comprises:

[0043] The transmission mechanism is arranged on the side wall clamped with the end torsion assembly and is in transmission connection with the driving motor through the end torsion assembly to simultaneously drive the cleaning roller and the squeezing roller to rotate.

[0044] In one or some optional embodiments, the transmission mechanism comprises:

[0045] The driving gear is coupled with the end torsion assembly;

[0046] The first driven wheel set is engaged with the driving gear and comprises at least one first driven wheel, a second driven wheel, the first driven wheel being engaged with the driving gear, the first driven wheel being engaged with the second driven wheel, and the second driven wheel being in transmission connection with the coupling end of the extrusion roller.

[0047] In one or some optional embodiments, the cleaning head further comprises:

[0048] The detachable shovel assembly is detachably connected to the lower edge of the cleaning head shell body near the cleaning roller, close to the surface to be cleaned, and located between the cleaning roller and the garbage box. The side of the detachable shovel assembly close to the cleaning roller is arc-shaped and adapted to the surface of the cleaning roller.

[0049] In one or some optional embodiments, the cleaning head shell body further comprises a garbage guide arranged between the detachable shovel assembly and the garbage box; the upper surface of the garbage guide or the garbage guide and the detachable shovel assembly forms an inclined garbage guide area; the garbage guide area is arranged below the extrusion roller and communicates with the garbage box.

[0050] In one or some optional embodiments, the extrusion roller comprises:

[0051] The extrusion roller body is provided with an inner cavity;

[0052] The bearing is arranged at one end of the extrusion roller body, and the cover is arranged at the opening of the inner cavity;

[0053] The elastic support shaft is arranged at the other end of the extrusion roller body and comprises a locking member and a spring, part of the locking member is limited in the inner cavity by the bearing, the locking member is elastically connected with the inner wall of the inner cavity through the spring, and the locking member extending out of the inner cavity can be locked with a side wall of the cleaning head shell body.

[0054] In one or some optional embodiments, a gear connection part is arranged at the other end of the extrusion roller body relative to the bearing and the elastic support shaft, and the gear connection part comprises:

[0055] The fixed part is connected with the extrusion roller body;

[0056] The connection part is connected with the fixed part and connected with the second driven wheel;

[0057] In use, the driving motor rotates to drive the cleaning roller body to rotate, and at the same time, drives the driving gear to rotate, the driving gear drives the second driven wheel to rotate, and the second driven wheel drives the extrusion roller body to rotate.

[0058] In one or some optional embodiments, the central axis of the extrusion roller deviates from the central axis of the cleaning roller by 5°-65° in the vertical direction.

[0059] In one or some optional embodiments, the cleaning head further comprises a hinge head assembly, which is clamped between the cleaning head shell assembly, the water tank assembly and the hinge head snap-on cover body, and can rotate around an axis parallel to the cleaning roller, and the angle between the hinge head assembly and the cleaning head shell assembly is 85°-180°; when the hinge head assembly rotates away from the locking position, the hinge head assembly can continue to rotate freely until the connecting rod assembly and the cleaning head shell assembly are at an angle of 180°; when the hinge head assembly rotates back to the locking position, the hinge head assembly and the cleaning head shell assembly are at an angle of 85°.

[0060] In one or some optional embodiments, the hinge head assembly comprises:

[0061] a hinge head upper shell, one end of which is detachably connected with the connecting rod assembly;

[0062] a water pump, which supplies clean water to the surface of the cleaning roller of the cleaning head;

[0063] a hinge head lower shell, which is clamped between the cleaning head shell assembly, the water tank assembly and the hinge head snap-on cover body, and the bottom of the hinge head upper shell is sleeved in the top opening of the hinge head lower shell;

[0064] a lock tongue assembly, which is limited in the hinge head lower shell and comprises a lock tongue, which can partially extend out of the hinge head lower shell to be connected with a lock tongue connecting plate installed on the cleaning head shell body, and the lock tongue can rotate together with the hinge head lower shell;

[0065] When the lock tongue rotates away from the locking position, the hinge head assembly can continue to rotate freely until the connecting rod assembly and the cleaning head shell assembly are at an angle of 180°; when the lock tongue rotates back to the locking position, the hinge head assembly and the cleaning head shell assembly are at an angle of 85°.

[0066] In one or some optional embodiments, the lock tongue assembly further comprises a lock tongue support, one side of which upwardly clamps the water pump in the hinge head upper shell, the other side of which downwardly abuts against a first spring, and the other side of the first spring abuts against the lock tongue, which is clamped between the lock tongue support and the hinge head lower shell and can partially extend out of the hinge head lower shell.

[0067] In one or some optional embodiments, the hinge head upper shell is provided with a locking button and a locking button support, one side of which outwardly abuts against a second spring, and the other side of the second spring abuts against the locking button, which partially extends out of the hinge head upper shell to achieve the connection between the hinge head assembly and the connecting rod assembly.

[0068] In one or some optional embodiments, the hinge head upper shell is provided with a clamping hole for clamping a hinge head electric connection plug, and the water pump is electrically connected with the hinge head electric connection plug, and the water pump can be electrically connected to the connecting rod assembly and the handle assembly through a wire harness electrically connected with the hinge head electric connection plug.

[0069] In one or some optional embodiments, the lower shell of the hinge head comprises a rotating cylinder and a sleeve cylinder vertically intersecting with the rotating cylinder, the rotating cylinder is open at both ends, the inlet and outlet pipes of the water pump and the wire harness electrically connected with the plug of the hinge head can pass through the openings of the rotating cylinder; the bottom of the upper shell of the hinge head is sleeved in the top opening of the sleeve cylinder, and the lower shell of the hinge head can rotate around the axis of the rotating cylinder.

[0070] In one or some optional embodiments, the upper shell of the hinge head is rotatably sleeved with the lower shell of the hinge head.

[0071] In one or some optional embodiments, the bottom of the lower shell of the hinge head extends at least one nut column towards the top opening thereof, the circumferential wall of the upper shell of the hinge head is provided with screw grooves corresponding to the nut column, and the upper shell of the hinge head is fixedly connected with the lower shell of the hinge head through at least one screw.

[0072] In one or some optional embodiments, the upper shell of the hinge head comprises:

[0073] the upper clamping part, and the circumferential wall of the upper clamping part is provided with screw grooves corresponding to the nut column, and the upper clamping part is detachably clamped with the rod assembly;

[0074] the lower sleeving part, and the circumferential wall of the lower sleeving part is provided with avoidance grooves corresponding to the nut column, and the lower sleeving part is detachably fixedly connected with the lower shell of the hinge head.

[0075] In one or some optional embodiments, the upper shell of the hinge head further comprises:

[0076] the fixed step ring, which is arranged between the upper clamping part and the lower sleeving part, when the lower sleeving part of the upper shell of the hinge head is sleeved in the top opening of the lower shell of the hinge head, the screw can pass through the screw groove and fasten the lower shell of the hinge head to the upper shell of the hinge head downwards on the upper surface of the fixed step ring.

[0077] Compared with the prior art, the application has the following beneficial effects:

[0078] The water tank assembly provided by the application directly reduces the overall weight by removing redundant water tank supports and connection structures and adopting a lightweight design with a semicircular cross section. The low installation of the water tank concentrates the weight on the lower disc, and the dynamic stability of the machine is excellent. When cleaning, the user will feel that the machine is very stable and easy to control whether advancing or retreating or turning around furniture, reducing the operation fatigue caused by the shaking and instability of the machine and improving the cleaning experience. The water tank assembly provided by the application is directly connected with the cleaning head shell through reasonable design of the water tank assembly and the structure of the corresponding cleaning head, and the clean water cavity and the sewage cavity are arranged horizontally and isolated in the cleaning head, instead of being suspended on the vertical rod or inserted at a high position. This layout reduces the overall center of gravity, reduces the overall height and longitudinal load of the cleaning head, and compared with the prior art, the cleaning tool can have a lighter operation feeling and improve the user experience. The weight reduction and center of gravity reduction of the water tank assembly provided by the application work together to greatly improve the user's feeling. Pushing and pulling a machine with low center of gravity and reasonable weight distribution is much more labor-saving and light than pushing and pulling a machine with the same total weight but a "heavy head and light feet" or uneven weight distribution. The integrated design reduces the number of parts and simplifies the assembly process, which is conducive to reducing production costs and improving assembly efficiency.

[0079] The water tank assembly provided by the application can clamp the hinge head assembly between the water tank assembly, the cleaning head shell assembly and the hinge head clamping cover body by reasonably designing the structure of the water tank assembly and the corresponding cleaning head shell assembly, and matching the design of the hinge head clamping cover body. The hinge head assembly is used for connecting the cleaning head and the connecting rod assembly, and comprises a hinge head upper shell, a water pump, a hinge head lower shell and a lock tongue assembly. One end of the hinge head upper shell is detachably connected with the connecting rod assembly. The water pump is used for conveying clean water on the surface of the cleaning roller of the cleaning head. The hinge head lower shell is clamped between the cleaning head shell assembly, the water tank assembly and the hinge head clamping cover body. The water pump is arranged in the hinge head assembly. The water inlet and outlet pipe connected with the water pump and the internal wire harness electrically connected with the hinge head electric connection plug can respectively pass through one opening of the rotating barrel of the hinge head lower shell, so as to prevent the internal leakage of the hinge head assembly from causing short circuit. The external wire harness electrically connected with the hinge head electric connection plug can be electrically connected to the water pump without worrying about water-proof. Compared with the prior art in which the water pump and the water tank are arranged above the hinge head, the water tank of the technical scheme of the application is arranged at the same height as the cleaning head, and the water pump is arranged slightly higher than the water tank. The length of the overall clean water path from the water tank to the cleaning roller through the water pump is shortened, and the large unnecessary water flow height difference of the water pump in the process of driving water flow is greatly reduced. The working condition of the water pump can be improved, and the power consumption and noise of the water pump can be reduced. The lock tongue clamping plate is installed on the water tank assembly or the cleaning head shell assembly, so as to further strengthen the clamping strength of the hinge head assembly in the return locking position, and further increase the strength and rigidity of the water tank assembly or the cleaning head shell assembly. Since the cleaning tool often needs to switch the hinge head assembly between the locking position and the non-locking position when taking out and returning, the lock tongue and the lock tongue clamping plate are abutted each time, and the abutment state is changed to the water compression state, which causes the cleaning head shell assembly or the water tank assembly to be impacted by the changed stress. The lock tongue clamping plate is installed on the cleaning head shell assembly or the water tank assembly, so as to improve the rigidity and fatigue resistance of the entire stressed component. The lock tongue clamping plate improves the feel of returning the connecting rod assembly to the user, and still improves the service life of the entire cleaning tool.

[0080] The cleaning head provided in this application comprises a water guide tip, an overflow plate, a squeeze roller, and a cleaning roller, all arranged on the head housing to form a water tank space. Wastewater guided by the water guide tip can only flow unidirectionally from the water tank space through a unidirectional filtration device to the wastewater chamber. Simultaneously, the squeeze roller and the cleaning roller are interference-fitted, allowing the squeeze roller to compress the cleaning roller, squeezing out the wastewater absorbed within the cleaning roller and allowing it to flow unidirectionally into the wastewater chamber within the water tank space. The overflow plate between the water tank space and the wastewater chamber prevents wastewater from swirling back across the overflow plate during rapid pushing and pulling of the water-dust circulation cleaning head, thus preventing wastewater from splashing back onto the cleaning roller surface and affecting cleaning efficiency. Because the squeezing roller is positioned eccentrically on the cleaning roller, and the water tank space is located above the cleaning roller, when the cleaning roller is in an unsaturated state, a gap may form between the squeezing roller and the cleaning roller. The seeping sewage will flow down from the cleaning roller or into the closed water tank space under the action of gravity, preventing it from dripping onto the surface to be cleaned and thus affecting the cleanliness.

[0081] The cleaning head provided by this invention effectively removes excess water through its water-guiding tip, ensuring that the outer wiping layer of the cleaning roller remains in a suitable dry-wet state. This guarantees effective wiping of the floor while preventing it from becoming "muddy and wet" and contaminating the ground due to excessive moisture. The cleaning head housing assembly has upper and lower separated wastewater and dry waste chambers. This layered structural design allows for the parallel arrangement of the two functional chambers within the limited space of the cleaning head, greatly improving space utilization. Furthermore, the dry-wet separation design fundamentally solves the problem of dry waste becoming moldy, smelly, and difficult to clean after being soaked in wastewater, maintaining hygiene inside the collection chamber and simplifying subsequent waste disposal processes. The vertically positioned wastewater overflow baffle in the cleaning head housing assembly acts as a baffle, limiting the water flow range within the wastewater diversion and collection area. It completely separates the wastewater from other parts of the wastewater chamber in a unidirectional flow manner to prevent backflow, greatly suppressing the sloshing of wastewater within the chamber. This avoids the "clunking" sound and instability caused by water sloshing during cleaning, thus improving the product's quality and quietness.

[0082] The cleaning head provided in this application eliminates the independent brush roller and its drive mechanism found in traditional cleaning heads. It relies solely on the interaction between the cleaning roller and the squeezing roller to physically squeeze and recycle wastewater, eliminating the additional power load and avoiding the extra power consumption and noise problems caused by the brush roller drive. This effectively reduces the power consumption and noise of the cleaning tool during operation. The cleaning roller simultaneously performs cleaning and wastewater adsorption functions, while the squeezing roller replaces the scraping function of the brush roller, resulting in a simpler structure. Attached Figure Description

[0083] In order to make the technical solutions of the embodiments of the present application clearer, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0084] Figure 1 An exploded view of the water tank assembly embodiment;

[0085] Figure 2 Another perspective exploded view of the water tank assembly embodiment;

[0086] Figure 3 A combined installation schematic view of the water tank assembly, the hinge head assembly and the hinge head engaging assembly;

[0087] Figure 4 A combined installation schematic view of the cleaning head housing assembly, the water tank assembly, the hinge head assembly and the hinge head engaging assembly;

[0088] Figure 5 Another perspective combined installation schematic view of the cleaning head housing assembly, the water tank assembly, the hinge head assembly and the hinge head engaging assembly;

[0089] Figure 6 An exploded view of the cleaning head housing assembly embodiment cooperating with the water tank assembly;

[0090] Figure 7 An exploded view of the cleaning head housing assembly embodiment cooperating with the water tank assembly from another perspective;

[0091] Figure 8 An exploded view of the cleaning head housing assembly embodiment cooperating with the water tank assembly from still another perspective;

[0092] Figure 9 A perspective view of the cleaning head embodiment assembled by the cleaning head housing assembly, the water tank assembly and the hinge head engaging assembly;

[0093] Figure 10 A perspective view of the cleaning tool embodiment provided with the water tank assembly;

[0094] Figure 11 Another perspective view of the cleaning tool embodiment provided with the water tank assembly;

[0095] Figure 12 A Figure 10 A lower half of a sectional view along the direction A in FIG. 12;

[0096] Figure 13 A perspective stepped view of the cleaning head embodiment provided with the water tank assembly;

[0097] Figure 14 For Figure 11 Fig. 2 is a lower half of a B-directional cross-sectional view of the present application;

[0098] Figure 15 For Figure 10 Fig. 3 is a C-directional cross-sectional view of the present application;

[0099] Reference signs:

[0100] 10, cleaning head; 10A, driving motor; 10B, cleaning roller; 110, cleaning head shell assembly; 120, water tank assembly; 130, hinge head snap cover assembly; 140, garbage box assembly; 150, lock tongue clamping plate;

[0101] 110a, cleaning head shell body; 110a1, left side wall; 110a2, right side wall; 110a3, first fixing seat; 110a4, second fixing seat; 110a5, clean water flow passage inlet; 110a6, clean water flow passage outlet; 110a7, water guide tip; 110a8, anti-overflow plate;

[0102] 110b, detachable strip assembly; 110c, extrusion roller; 110d1, extrusion roller left side sliding clamping block; 110d2, extrusion roller right side sliding clamping block; 110e, cleaning roller end knob wear-resistant ring; 110f, upper cover; 110g, clean water pipe adapter; 110p, left side decorative sticker; 110q, right side decorative sticker;

[0103] 120a, water tank body; 120a1, opening groove; 120a2, water outlet; 120a3, first connecting seat; 120a4, second connecting seat; 120a5, water tank body avoiding notch; 120a6, glue dispensing groove (ultrasonic welding groove); 120b, water tank sealing side wall; 120b5, water tank sealing side wall avoiding notch; 120c, rotary flip cover assembly;

[0104] 130a, hinge head snap cover body; 130a3, first fastening seat; 130a4, second fastening seat; 130b, first auxiliary roller; 130c, second auxiliary roller; 130d, roller pin shaft;

[0105] 20, connecting rod assembly; 200, connecting rod body; 201, lower connecting sleeve assembly; 203, electric connection wire harness; 20B, lower electric connection plug; 20C, upper electric connection plug;

[0106] 30, handle assembly;

[0107] 40, hinge head assembly; 40A, water pump; 40B, hinge head electric connection plug; 401, hinge head upper shell; 402, hinge head lower shell; 403, lock tongue; 404, lock tongue support; 405, locking button; 406, locking button support;

[0108] Q, cavity; M, sewage cavity; N, dry garbage cavity; S, sewage diversion and collection area. DETAILED DESCRIPTION

[0109] The embodiments described above are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0110] It should be understood that, in the embodiments of the present application, all directional terms described, such as "upper", "lower", "left", "right", "front", "back", etc., indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the convenience of simplifying the description of the present application, and do not mean or imply that the device, element or component must have a particular orientation and a particular orientation configuration, and should not be understood as a limitation of the present application. Only for explaining the relative positional relationship, movement condition, etc. between the components shown in the drawings, when the specific attitude changes, the directional indication may also change accordingly.

[0111] In addition, the ordinal numbers in the present application, such as "first", "second", etc., are only for distinguishing purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the technical features indicated. The "first", "second" features thus defined can be explicitly or implicitly and at least one of the technical features. In the description of the present application, the meaning of "a plurality of" is at least two, that is, two or more, unless otherwise explicitly limited; the meaning of "at least one" is one or more.

[0112] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screwed", etc. should be understood broadly, for example, the positional relationship between the components can be relatively fixed, or there can be a physically fixed connection between the components, which can be detachable or integrated structure; it can be mechanical connection, or electrical signal connection; it can be directly connected, or indirectly connected through intermediate media or components; it can be the internal communication of two elements, or the interaction relationship between two elements, unless the specification explicitly limits it, and it cannot be understood as other understanding when it can achieve the corresponding function or effect. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0113] The present application will be further described in conjunction with the specific embodiments, but not as a limitation of the present application.

[0114] Embodiment One

[0115] The present embodiment provides a water tank assembly which can be used in a cleaning head as shown in Figure 9 , a cleaning tool as shown in Figure 10 and 11 , refer to Figures 1-5 , the water tank assembly 120 can be mounted on the cleaning head 10, the water tank assembly 120 comprises a water tank body 120a and a sealing side wall 120b; the water tank body 120a is internally hollowed to form a cavity Q, the water tank body 120a is horizontally semi-cylindrical at both ends, the water tank body 120a is square columnar at the middle part, the water tank body 120a is provided with an open mouth covering the entire vertical surface, the water tank body 120a is provided with a notch at the upper middle part which can accommodate the rotation of the hinge head assembly 40, the water tank body 120a is provided with a connecting mechanism at the middle part, the water tank body 120a is provided with an open slot 120a1 at the top wall of one end, the open slot 120a1 is provided with a water inlet (not marked in the figure), the water tank body 120a is provided with an avoiding notch 120a5 at one end close to the open slot 120a1, and the water tank body 120a is further provided with a water outlet 120a2 at the lower middle part; the sealing side wall 120b is provided with a sealing side wall avoiding notch 120b5 corresponding to the avoiding notch 120a5 at one end close to the open slot; wherein the hinge head clamping cover body 130a of the cleaning head 10 can clamp the hinge assembly 40 between the cleaning head shell body 110a and the water tank body 120a and the hinge head clamping cover body 130a through the connecting mechanism. Further, the water tank body 120a is provided with a dispensing groove 120a6 or an ultrasonic welding groove 120a6 at the open mouth, and the open mouth of the water tank body 120a is sealed with the sealing side wall 120b at the dispensing groove or the ultrasonic welding groove.

[0116] Compared with the prior art which sets the water pump and the water tank above the hinge head, in the present embodiment, the water tank assembly 120 and the cleaning head shell assembly 110 are directly connected by reasonably designing the structure of the water tank assembly 120 and the corresponding cleaning head 10, and the cavity Q of the water tank assembly 120 and the sewage cavity M are transversely isolated and arranged inside the cleaning head 10, instead of being suspended on a vertical rod or inserted at a high position. This layout reduces the gravity center of the whole machine, reduces the overall height and longitudinal load of the cleaning head, and compared with the prior art, can make the cleaning tool have a lighter operation feeling and improve the user experience.

[0117] The water tank assembly provided by the application directly reduces the overall weight by removing redundant water tank supports and connection structures and adopting a lightweight design with a semicircular cross section. The low installation of the water tank concentrates the weight on the lower disc, and the dynamic stability of the machine is excellent. When cleaning, the user will feel that the machine is very stable and easy to control whether advancing or retreating or turning around furniture, reducing the fatigue feeling caused by the shaking and instability of the machine and improving the cleaning experience. The water tank assembly provided by the application, by reasonably designing the structure of the water tank assembly 120 and the corresponding cleaning head shell assembly 110, and cooperating with the design of the hinge head clamping cover body 130a, the hinge head assembly 40 can be clamped between the water tank assembly 120, the cleaning head shell assembly 120 and the hinge head clamping cover body 130a, the hinge head assembly 40 is used for connecting the cleaning head 10 and the connecting rod assembly 20, the hinge head assembly 40 includes a hinge head upper shell 401, a water pump 40A, a hinge head lower shell 402 and a lock tongue assembly, one end of the hinge head upper shell 401 is detachably connected with the connecting rod assembly 20; the water pump 40A transports clean water on the surface of the cleaning roller 10B of the cleaning head 10; the hinge head lower shell 402 is clamped between the cleaning head shell assembly 110, the water tank assembly 120 and the hinge head clamping cover body 130a, the water pump 40A is arranged in the hinge head assembly 40, the inlet and outlet pipes connected with the water pump 40A and the internal wire harness electrically connected with the hinge head electric connection plug 40B can respectively pass through one opening of the rotating cylinder of the hinge head lower shell 402, preventing water leakage in the hinge head assembly 40 from causing short circuit, and the external wire harness electrically connected with the hinge head electric connection plug 40B can be electrically connected to the water pump without worrying about water resistance. Compared with the prior art in which the water pump and the water tank are arranged above the hinge head, the water tank assembly 120 of the technical solution of the application is arranged at a position with the same height as the cleaning head 110, and the water pump 40A is also arranged at a position slightly higher than the water tank assembly 120, thereby shortening the length of the overall clean water path from the water tank assembly 120 to the cleaning roller 10B through the water pump driving, greatly reducing the unnecessary water flow height difference of the water pump 40A in the process of driving water flow, improving the working condition of the water pump 40A and reducing the power consumption and noise of the water pump 40A. The combination of the hinge head assembly 40, the cleaning head shell assembly 110, the water tank assembly 120 and the hinge head clamping cover body 130a also facilitates the convenient disassembly of the water pump 40A from the hinge head assembly 40 for maintenance and replacement when the water pump 40A fails.

[0118] In one embodiment, referring to Figures 1 to 3, the lower middle of the water tank body 120a is further provided with a pipeline channel for connecting the water outlet 120a2 and the water pump 40A installed in the hinge head assembly 40; the water outlet 120a2 is a water outlet connector protruding to the side of the pipeline channel. The water tank assembly 120 further comprises a flip cover assembly 120c hinged to the inner side wall of the opening slot 120a1, and the flip cover assembly 120c can be rotated to open / close the opening slot 120a1.

[0119] Further, the flip cover assembly 120c comprises a flip cover body (not labeled in the figure), one end of the flip cover body is provided with a sealing edge (not labeled in the figure) extending downward opposite the water inlet, a sealing ring (not labeled in the figure) is sleeved on the outer wall of the sealing edge, the sealing edge seals the water inlet through the sealing ring, the other end of the flip cover body is provided with a pin shaft (not labeled in the figure), the pin shaft is clamped in the pin hole (not labeled in the figure) on the surrounding wall of the opening slot, and the flip cover body can be rotated around the pin shaft to open / close the water inlet. The area of the flip cover body opposite the water inlet is provided with a ventilation hole (not labeled in the figure) communicating with a cavity, and a one-way valve (not labeled in the figure) is sleeved on the side of the ventilation hole facing the water inlet, and water in the cavity Q cannot overflow from the ventilation hole. The one-way valve is used to limit the flow direction of gas from the outside of the water tank body 120a to the inside of the water tank body 120a. When the water pump 40A pumps water from the water tank, the water level in the water tank decreases, the internal space increases, and the gas pressure is lower than the external atmospheric pressure, which causes a negative pressure difference acting on the one-way valve, which pushes the sealing piece of the one-way ventilation valve outward, so that external air can enter the water tank through the air hole and quickly balance the internal and external pressure. When the internal and external pressure of the water tank is balanced, the elastic sealing element inside the one-way ventilation valve is closed under the action of its own pre-tightening force or gravity, blocking the air hole, so that the inside of the water tank is in a sealed state, and the water leakage problem caused by the change of internal pressure when the water tank is tilted can be effectively avoided, greatly improving the reliability and user experience of the product.

[0120] In one embodiment, referring to Figures 1 to 5 , Figure 9 , Figures 12 to 15The two connecting ears 120b2 are arranged at the two ends of the sealing side wall 120b, and the water tank assembly 120 is fixedly connected with the cleaner head shell body 110a through the two connecting ears 120b2. The connecting mechanism includes two first connecting seats 120a3 and two second connecting seats 120a4; the hinge head clamping cover body 130a is provided with two first fastening seats 130a3 and two second fastening seats 130a4; when the shell body 110a and the water tank assembly 120 are butted, the first connecting seat 120a3 is aligned with the first fastening seat 110a3, and the second connecting seat 120a4 is aligned with the second fastening seat 110a4; when the hinge head clamping cover body 130a continues to butt the water tank assembly 120, the first fastening seat 130a3 is aligned with the first connecting seat 120a3, and the second fastening seat 130a4 is aligned with the second connecting seat 120a4; long screws are sequentially passed through the first fastening seat 130a3, the first connecting seat 120a3, the first fastening seat 110a3, the second fastening seat 130a4, the second connecting seat 120a4 and the second fastening seat 110a4, so that the shell body 110a, the water tank assembly 120 and the hinge head clamping cover body 130a are fastened and connected.

[0121] In one specific embodiment, referring to Figures 3 to 5 , Figure 9 , Figures 12 to 13 The hinge head clamping cover assembly 130 further includes a first auxiliary roller 130b and / or a second auxiliary roller 130c and a pin shaft 130d for clamping the first auxiliary roller 130b and the second auxiliary roller 130c on the hinge head clamping cover body 130a.

[0122] In one specific embodiment, referring to Figure 8 , Figure 12 , Figures 14-15 The cleaner head shell body 110a is provided with a clean water inlet 110a5 and a clean water outlet 110a6 in communication with each other, and the clean water inlet 110a5 and the clean water outlet 110a6 are arranged on one of the side walls of the cleaner head shell body 110a, wherein the clean water outlet 110a6 is arranged corresponding to the cleaning roller 10B. The cleaner head shell body 110a is connected with an adapter 110g, and the adapter 110g is in communication with the clean water inlet 110a5 and the container cavity Q respectively, for sequentially introducing the clean water in the container cavity Q to the clean water inlet 110a5, the clean water outlet 110a6 and the cleaning roller 10B, forming a clean water channel. The connection between the adapter 110g and the container cavity Q and the clean water inlet 110a5 is tight, which can effectively prevent the clean water from leaking during transmission. At the same time, the clean water channel inside the cleaner head shell body 110a is reasonably designed, which avoids water leakage caused by pipe bending, loose connection and other problems, and ensures the stable operation of the cleaning system.

[0123] In one specific embodiment, referring to Figures 1-5 , Figures 8-9, Figure 14 The cleaning head housing body 110a is provided with a first fixing seat 110a3 and a second fixing seat 110a4. The water tank body 120a is provided with a first connecting seat 120a3 and a second connecting seat 120a4. The hinge head latching cover body 130a is also provided with a first fastening seat 130a3 and a second fastening seat 130a4. The two fastening seats can cooperate with the two fixing seats and the two connecting seats to clamp the hinge head assembly 40 between the cleaning head housing body 110a, the water tank body 120a, and the hinge head latching cover body 130a. The hinge head latching cover body 130a is also provided with a first auxiliary roller 130b and a second auxiliary roller 130c. The two auxiliary rollers can be fixed to the hinge head latching cover body 130a by roller pins 130d. The first auxiliary roller 130b and the second auxiliary roller 130c can rotate around the roller pins 130d. In actual use, the number and position of the first auxiliary roller 130b and the second auxiliary roller 130c can be flexibly configured according to the actual usage scenario.

[0124] Example 2

[0125] This embodiment provides a cleaning head that can be used for, for example Figure 10 and 11 The cleaning tools shown are described in the attached document. Figures 4-5 , Figure 9 , Figures 12-15 The cleaning head 10 includes a cleaning head housing assembly 110, a cleaning roller 10B, a squeezing roller 110c, a water tank assembly 120, a hinge head engaging cover body 130a, and a hinge head assembly 40 as described in Embodiment 1. The cleaning head housing assembly 110 includes a cleaning head housing body 110a with two side walls (110a1, 110a2). One side wall is hinged to one end of the drive motor 10B, and the output end of the other end of the drive motor 10B is engaged with the other side wall. The cleaning roller 10B is sleeved on the drive motor 10A, and the output end couples and drives the cleaning roller 10B to rotate and scrub the surface to be cleaned. The cleaning head housing body 110a has a saturated cover along the entire axial direction of the cleaning roller. The outer layer abuts against and guides the wastewater with a water guide tip 110a7; the squeezing roller 110c is rotatably engaged between the two side walls, squeezing the upper surface of the cleaning roller 10B and being eccentrically positioned relative to the cleaning roller and close to the water guide tip 110a7; the water tank assembly 120 is detachably connected to the cleaning head housing assembly 110, providing clean water for rinsing the surface of the cleaning roller 10B; the hinge head latching cover body 130a can clamp the hinge head assembly 40 and the cleaning head housing assembly 110 and the water tank assembly 120, which are detachably connected to form a whole; wherein the hinge head assembly 40, the cleaning head housing assembly 110, the water tank assembly 120, and the hinge head latching cover body 130a are pivotable about an axis parallel to the cleaning roller.

[0126] The cleaning head 10 provided by the embodiment has the water tank assembly 120 arranged at the same height as the cleaning head 10, and the water pump 40A is arranged at a position slightly higher than the water tank assembly 120, thereby shortening the length of the whole clean water path from the water tank assembly 120 to the cleaning roller 40B through the water pump 40A, greatly reducing the unnecessary water flow height difference of the water pump 40A in the process of driving the water flow, improving the working condition of the water pump 40A, reducing the power consumption and noise of the water pump 40A, and facilitating the maintenance and replacement of the water pump 40A when the water pump 40A fails. The water guide tip 110a7 of the cleaning head shell assembly 110 effectively removes excess water, so that the outer wiping layer of the cleaning roller 10B always maintains an appropriate dry and wet state, which not only ensures the wiping effect on the ground, but also avoids the situation that the ground is polluted due to being "dusty and wet". The vertically arranged anti-overflow plate 110a8 of the cleaning head shell assembly 110 plays the role of a baffle, which limits the water flow range in the sewage guide and collection area S, completely separates it from other parts of the sewage cavity M in a one-way flow manner to prevent backflow, greatly suppresses the shaking of the sewage in the sewage cavity M, avoids the "clank" water sound and the feeling of unstable equipment operation caused by water shaking during cleaning, and improves the quality and quietness of the product. The water guide tip 110a7, the anti-overflow plate 110a8, the extrusion roller 110c and the cleaning roller 10B are arranged on the cleaning head shell body 110a, and the four form a water tank space, the sewage guided by the water guide tip 110a7 can only flow to the sewage cavity M in one direction after passing through the one-way filter device; at the same time, the extrusion roller 110c and the cleaning roller 10B form an interference fit, which can realize the extrusion of the cleaning roller 10B by the extrusion roller 110c, so as to extrude the sewage absorbed in the cleaning roller 10B and flow to the sewage cavity M in one direction. The anti-overflow plate 110a8 arranged between the water tank space and the sewage cavity M can prevent the sewage from flowing back to the surface of the cleaning roller 10B due to the agitation in the sewage cavity M, thereby affecting the cleaning efficiency. Since the extrusion roller 110c is arranged at the eccentric position of the cleaning roller, the water tank space is located above the cleaning roller 10B, and when the cleaning roller 10B is in a non-saturated state, a gap may be formed between the extrusion roller 110c and the cleaning roller 10B. The extruded sewage flows down from the cleaning roller 10B or flows into the closed water tank space under the action of gravity, thereby avoiding dropping on the surface to be cleaned and affecting the cleanliness.

[0127] The cleaning head 10 provided by the embodiment discards the independent brush roller and its driving mechanism in the traditional cleaning head, and only relies on the interference fit between the cleaning roller 10B and the extrusion roller 110c to complete the physical extrusion and recovery of sewage, eliminates the additional power load, avoids the additional power consumption and noise problems caused by the brush roller driving, and effectively reduces the power consumption and noise of the cleaning tool during work. The cleaning roller 10B simultaneously undertakes the functions of cleaning and sewage adsorption, and the extrusion roller 110c replaces the dirt scraping function of the brush roller, and the structure is more simplified. Through reasonable design of the structure of the cleaning head 110, the water tank assembly 120 is directly connected with the cleaning head shell assembly 110, and the cavity Q and the sewage cavity M are transversely isolated and arranged inside the cleaning head 10, instead of being suspended on the vertical rod or inserted at a high position. This layout reduces the gravity center of the whole machine, reduces the overall height and longitudinal load of the cleaning head 10, and compared with the prior art, can make the cleaning tool have a lighter operation feeling, and improve the user experience.

[0128] In one specific embodiment, referring to Figures 9 to 11 , the cleaning head shell assembly 110 can also be provided with a garbage box 140, which can be inserted / extracted into / from the shell body 110a through a lower part of one side wall. The cleaning roller 10B rotates to wipe the ground and can bring garbage into the garbage box 140.

[0129] In one specific embodiment, referring to Figures 1-3 , Figures 14-15 , the cleaning head shell assembly 110 further comprises a detachable scraper strip assembly 110b, which is detachably connected to the lower edge of the cleaning head shell body 110a close to the cleaning roller 10B, close to the surface to be cleaned, and located between the cleaning roller 10B and the garbage box 140. The side surface of the detachable scraper strip assembly 110b close to the cleaning roller is arc-shaped and adapted to the surface of the cleaning roller. Further, the cleaning head shell body 110a further comprises a garbage guide (not labeled in the figure) arranged between the detachable scraper strip assembly 110b and the garbage box 140. The upper surface of the garbage guide or the garbage guide and the detachable scraper strip assembly forms an inclined garbage guide area (not labeled in the figure). The garbage guide area is arranged below the extrusion roller and communicates with the garbage box.

[0130] In one specific embodiment, referring to Figures 4-9 , Figures 12-15 , in the cross section perpendicular to the axial direction of the cleaning roller, the cleaning head shell body 110a extends in the direction away from the cleaning roller below the connecting water guide tip 110a7. The other end of the transverse partition plate (not labeled in the figure) extends upward to form a vertical wall (not labeled in the figure). The left side wall 110a1, the right side wall 110a2, the water guide tip 110a7, the transverse partition plate and the vertical wall jointly enclose the sewage cavity M.

[0131] In one specific embodiment, referring to Figures 12-15The overflow baffle 110a8 has holes or grooves (not shown in the attached diagram) connecting the water tank space and the sewage cavity. Specifically, the holes or grooves are located on one side of the sewage cavity M and are equipped with a one-way filtration device (not shown in the attached diagram). The sewage guided by the guide tip 110a7 can only flow unidirectionally from the water tank space through the one-way filtration device to the sewage cavity M. More specifically, the one-way filtration device is a filter membrane. The overflow baffle 110a8 is connected between the housing body 110a and the guide tip 110a7. The overflow baffle 110a8 and the guide tip 110a7 form a sewage guiding and collecting area S. The overflow baffle 110a8 acts as a physical barrier, and the sewage at the guide tip 110a7 flows to the sewage cavity M through the holes or grooves. When the cleaning head 10 experiences vibration (such as when moving on uneven ground or encountering obstacles), the wastewater in the wastewater chamber M forms a water film on the surface of the filter membrane. This water film increases the resistance to reverse osmosis, making it difficult for wastewater to seep back into the wastewater collection area S through the permeable holes. This ensures that wastewater can only flow unidirectionally from the guide tip 110a7 to the wastewater chamber M, preventing secondary contamination of the guide tip 110a7 and related cleaning components. When the cleaning head 10 is subjected to vibration, the combination of the overflow plate 110a8 and the filter membrane stably prevents wastewater backflow, ensuring that the cleaning work is unaffected by vibration and maintaining a consistently clean state. This enhances the adaptability and stability of the cleaning tool under different working conditions.

[0132] In one specific embodiment, see [reference] Figures 6-9 , Figure 12 The cleaning head housing assembly 110 also includes an upper cover 110f, which is positioned above the squeezing roller 110c. The side of the upper cover 110f closest to the cleaning roller 10B can be rotated open along an axis parallel to the cleaning roller. An overflow prevention flange (not shown in the attached diagram) extends downwards from the lower surface of the upper cover 110f parallel to the cleaning roller axis. This flange engages with the top of the overflow prevention plate 110a8, isolating the upper part of the water tank space from the sewage cavity M. When the cleaning roller 10B rotates, the liquid adhering to its surface splashes outwards under centrifugal force. The vertically extending portion of the overflow prevention flange intercepts the horizontal movement path of the splashed sewage. Simultaneously, its lower surface and the engagement surface with the top of the overflow prevention plate 110a8 form the first physical barrier. After being blocked by the overflow prevention flange, the sewage flows back to the sewage guide and collection area S along the inner wall of the overflow prevention plate 110a8, forming a unidirectional flow path and improving the overflow prevention effect.

[0133] In one embodiment, the lower surface of the upper cover 110f is provided with an abutting portion (not labeled in the figure) that abuts against the extrusion roller 110c to clean the surface of the extrusion roller 110c. The abutting portion abuts against the extrusion roller 110c at intervals along the axial direction of the extrusion roller, and the abutting portion is a plurality of point-shaped protrusions arranged at intervals. The plurality of point-shaped protrusions are distributed at intervals along the axial direction of the extrusion roller 110c, forming a non-continuous contact surface. When the extrusion roller 110c rotates, each protrusion independently applies a shearing force to a local area of the surface of the extrusion roller 110c, and the impurities are stripped by high-frequency and short-stroke scraping action. Compared with the traditional surface contact cleaning, the cleaning quality and efficiency can be effectively improved. When the upper cover is closed, the abutting portion forms a line contact or a surface contact with the surface of the extrusion roller 110c under the action of its own elasticity or pre-tightening force, and the shearing force generated by relative motion strips the impurities (such as fibers, dirt, and residual liquid film) attached to the surface of the extrusion roller 110c, thereby improving the cleaning efficiency. When the water dust circulating cleaning head 10 is working, the cleaning roller 10B rotates to wipe the ground, driving the extrusion roller 110c to rotate. While the extrusion roller 110c rotates to extrude and clean the surface of the cleaning roller 10B, it is easy to roll up the small sheet-shaped garbage such as paper scraps on the ground. The abutting portion on the lower surface of the upper cover 110f can timely and passively strip the small sheet-shaped garbage from the surface of the extrusion roller 110c, preventing the small sheet-shaped garbage from accumulating and winding on the surface of the extrusion roller 110c and affecting the cleaning efficiency.

[0134] When the upper cover is in the closed state, the inner surface thereof forms a dynamic sealing structure with the cylindrical surface of the extrusion roller 110c, preventing sewage or impurities from overflowing. During the cleaning process, the extrusion roller 110c applies pressure to the cleaning object (such as fabric, ground, etc.) by rotating, and the closed state of the upper cover can limit the diffusion path of the extruded sewage, allowing it to enter the sewage container cavity M along the water guide sharp portion 110a7. When it is necessary to maintain or clean the extrusion roller 110c, the upper cover can be opened along the rotation axis to expose the complete working surface of the extrusion roller 110c, facilitating direct operation.

[0135] Further, the surface of the extrusion roller 110c can be covered with a hydrophobic and dirt-attracting layer made of a dirt-attracting material. Even if the small garbage accumulates on the surface of the extrusion roller 110c with the assistance of passive cleaning by the abutting portion on the lower surface of the upper cover 110f, the user only needs to periodically remove the dirt-attracting layer from the surface of the extrusion roller 110c and replace it with a new one.

[0136] In one embodiment, referring to Figure 12 , Figure 13 , Figure 15 , the outer layer of the cleaning roller 10B is a sponge layer. When the sponge layer is in a non-saturated state, a gap is formed between the lower surface of the water guide sharp portion 110a7 and the sponge layer, and the seeped sewage drops on the surface of the cleaning roller 10B or in the shell body 110a. The extrusion roller 110c is driven to rotate by the friction between the sponge layer and the extrusion roller 110c.

[0137] In one specific embodiment, referring to Figures 6 to 8 In order to facilitate the removal of the extrusion roller 110c from between the left side wall 110a1 and the right side wall 110a2, a left side sliding clamping block 110d1 is arranged on the left side wall 110a1, and a right side sliding clamping block 110d2 is arranged on the right side wall 110a2. The two clamping blocks are arranged correspondingly, and both of them are provided with a sliding groove for sliding the two ends of the extrusion roller 110c in / out. In order to improve the wear resistance of the two clamping blocks, the two clamping blocks are made of wear-resistant materials, and the two clamping blocks are tightly clamped with the left side wall 110a1 and the right side wall 110a2 respectively. When the user needs to remove the extrusion roller 110c for maintenance, he only needs to slide the two ends of the extrusion roller 110c out of the sliding grooves of the two clamping blocks, and then the extrusion roller 110c can be easily removed.

[0138] In one specific embodiment, referring to Figures 6 to 8 In order to improve the wear resistance of the end button assembly connected to the output end of the driving motor and one of the two side walls of the shell body 110a, a cleaning roller end button wear-resistant ring 110e can be arranged on one of the two side walls, and the part of the end button assembly arranged on one of the two side walls can rotate relative to the cleaning roller end button wear-resistant ring 110e.

[0139] Further, the outer surfaces of the left side wall 110a1 and the right side wall 110a2 can be respectively attached with a left side decorative sticker 110p and a right side decorative sticker 110q, so as to further enhance the appearance of the cleaning head 10.

[0140] In one specific embodiment, the cleaning head shell assembly 110 further comprises a transmission mechanism arranged on the side wall coupled with the end button assembly and connected with the driving motor through the end button assembly to drive the cleaning roller 10B and the extrusion roller 110c to rotate simultaneously. Specifically, the transmission mechanism comprises a driving gear and a first driven gear set; the driving gear is coupled with the end button assembly; the first driven gear set is engaged with the driving gear and comprises at least one first driven gear and a second driven gear; the first driven gear is engaged with the driving gear, the first driven gear is engaged with the second driven gear, and the second driven gear is drivingly connected with the coupling end of the extrusion roller 110c. The cleaning head 10 can further increase the power to drive the extrusion roller 110c to rotate by configuring the transmission mechanism, and can further improve the efficiency of the extrusion roller 110c to extrude the sewage from the surface of the cleaning roller 10B.

[0141] In one specific embodiment, the extrusion roller 110c comprises an extrusion roller body, a bearing, an elastic support shaft; the extrusion roller body is provided with an inner cavity; the bearing is arranged at one end of the extrusion roller body, and a cover is arranged at the opening of the inner cavity; the elastic support shaft is arranged at the other end of the extrusion roller body and comprises a locking piece and a spring, part of the locking piece is limited in the inner cavity by the bearing, the locking piece is elastically connected with the inner wall of the inner cavity through the spring, and the locking piece extending out of the inner cavity can be locked with a side wall of the cleaning head body.

[0142] Further, the extrusion roller body is provided with a gear connection part at the other end relative to the bearing and the elastic support shaft, the gear connection part comprises a fixed part and a connection part; the fixed part is connected with the extrusion roller body; the connection part is connected with the fixed part and connected with the second driven wheel; in use, the driving motor rotates to drive the cleaning roller body to rotate, at the same time, the driving motor drives the driving gear to rotate, the driving gear drives the second driven wheel to rotate, and the second driven wheel drives the extrusion roller body to rotate.

[0143] In one specific embodiment, referring to Figure 12 , Figure 13, the center axis of the extrusion roller 110c is offset by an angle θ of 5°-65° in the vertical direction relative to the center axis of the cleaning roller 10B. When the center axis of the extrusion roller 110c is offset by an angle θ of 5° in the vertical direction relative to the center axis of the cleaning roller 10B, the extruded point of the cleaning roller surface that has been extruded from the saturated state to the under-saturated state by the extrusion roller 110c that continues to rotate counterclockwise, at this time, even if the angular velocity continues to rotate at 150 rpm-250 rpm, the excess water in the saturated state at the extruded point cannot be centrifugally flung from the point to the ground, so at this offset angle, the user does not need to worry that the accelerated rotation of the cleaning roller 10B when the cleaning head is advanced forward will cause the excess water at the extruded point to be centrifugally flung to the ground; the extruded dirty water can flow along the upper surface of the water guide sharp portion 110a7 on the cleaning roller surface to the dirty water guide collection area S in the state that the sponge layer on the cleaning roller surface has been saturated with water, due to this eccentric design, even the dirty water that has not been guided away by the upper surface of the water guide sharp portion 110a7 can only continue to flow downward on the upper surface of the sponge layer on the cleaning roller surface under the action of gravity, and will ultimately be guided away by the upper surface of the water guide sharp portion 110a7, and will not directly drip to the ground; when the center axis of the extrusion roller is offset by an angle θ of 65° in the vertical direction relative to the center axis of the cleaning roller, the projection of the extruded point in the horizontal direction from the point on the cleaning roller closest to the transverse partition plate is less than 3 mm (estimated based on the diameter of the cleaning roller in the uncompressed state being 58 mm), the cylindrical arc surface from the extruded point to the point on the cleaning roller closest to the transverse partition plate cannot be absorbed by the sponge layer of the cleaning roller even in the saturated state, the front end of the water guide sharp portion 110a7 can be located directly below the extrusion roller 110c and adhere to the surface of the extruded cleaning roller 10B to keep the water guide sharp portion 110a7 and the cleaning roller 10B in elastic abutment, since the dirty water has been extruded by the extrusion roller and guided out, the surface of the cleaning roller below the lower surface of the front end of the water guide sharp portion 110a7 does not need to worry about the problem of excess water flowing along the surface of the cleaning roller to the ground, on the contrary, since the extruded point is closer to the transverse partition plate, the guided-out dirty water can be more quickly collected in the dirty water guide collection area S. Since the height position of the extruded point at this angle is lower than when the offset angle θ is 5°, there is no need to worry that the excess water in the saturated state at the extruded point will be centrifugally flung from the point to the ground. Therefore, in the technical solution, the center axis of the extrusion roller 110c is offset by an angle θ of 5°-65° in the vertical direction relative to the center axis of the cleaning roller 10B, which is a preferred technical solution.

[0144] In one specific embodiment, referring to Figure 1 - 5、 Figures 8-9 、 Figure 14The middle part of the cleaning head shell body 110a extends outward in the direction away from the cleaning roller 10B with a U-shaped docking mechanism, the cleaning head shell assembly 110 further comprises a water tank assembly 120, a hinge head assembly 40, and a hinge head clamping cover assembly 130; the water tank assembly 120 comprises a water tank body 120a and a sealing side wall 120b sealed as a whole, and provides clean water for the cleaning roller 10B; the water tank body 120a is internally hollowed to form a cavity Q, both ends of which are in a horizontal semi-cylindrical shape, and the middle part is in a square column shape; the upper middle part of the water tank body 120a is in a notch shape capable of accommodating the rotation of the hinge head assembly 40; the middle part of the water tank body 120a is provided with a connecting mechanism; the hinge head assembly 40 is connectable to the shell body 110a, the water tank assembly 120, and the connecting rod assembly 20; the hinge head clamping cover assembly 130 comprises a hinge head clamping cover body 130a, which is capable of cooperating with the connecting mechanism of the water tank body and the docking mechanism of the shell body to form a docking, clamps the hinge head assembly 40 between the water tank body 120a, the shell body 110a, and the hinge head clamping cover body 130a, and allows the hinge head assembly 40 to rotate around an axis parallel to the axis of the cleaning roller. The cleaning roller 10B and the extrusion roller 110c are rotatably installed between the two side walls of the shell body 110a, the extrusion roller 110c interferes with the cleaning roller 10B to extrude the sewage of the cleaning roller 10B. The shell body 110a is internally provided with a sewage cavity M, and a water guide part 110a7 is arranged below the extrusion roller 110c to guide the sewage to the sewage cavity M.

[0145] In one embodiment, referring to Figures 3-5 , Figure 9 , Figures 12-15The hinge head assembly 40 comprises a hinge head upper shell 401, a water pump 40A, a hinge head lower shell 402 and a lock tongue assembly; one end of the hinge head upper shell 401 is detachably connected with the connecting rod assembly 20; the water pump 40A is used to deliver clean water to the surface of the cleaning roller 10B of the cleaning head 10; the hinge head lower shell 402 is clamped between the cleaning head shell assembly 110, the water tank assembly 120 and the hinge head clamping cover body 130a, the bottom of the hinge head upper shell 401 is sleeved in the top opening of the hinge head lower shell 402; the lock tongue assembly is limited in the hinge head lower shell 402, the lock tongue assembly comprises a lock tongue 403, the lock tongue 403 can partially extend out of the hinge head lower shell 402 to be clamped on the lock tongue clamping plate 150 on the cleaning head shell body 110a, and the lock tongue 403 can rotate together with the hinge head lower shell 402; wherein the hinge head assembly 40 can rotate around an axis parallel to the cleaning roller, the hinge head assembly 40 and the cleaning head 110 form an included angle of 85°-180°; when the lock tongue 403 is turned out of the locking position, the hinge head assembly 40 can continue to rotate freely until the connecting rod assembly 20 and the cleaning head 10 form an angle of 180°; when the lock tongue 403 is turned back to the locking position, the hinge head assembly 40 and the cleaning head 10 form an angle of 85°. When the user needs to use the cleaning tool, the user needs to hold the handle 30 first, drives the connecting rod assembly 20 through the handle 30, and then drives the hinge head assembly 40 to rotate the part of the cleaning tool other than the cleaning head 10 with the hinge head assembly 40 as the rotating fulcrum; when the lock tongue 403 is turned out of the locking position, the hinge head assembly 40 can continue to rotate freely until the connecting rod assembly 20 and the cleaning head 10 form an angle of 90°-180° at any position, and when the user pushes or pulls the cleaning head 10 to move forward or backward, the cleaning head 10 can be rotated in any direction.

[0146] Compared with the prior art in which the water pump and the water tank are arranged above the hinge head, in the embodiment of the present application, the hinge head assembly 40 is internally provided with a water pump 40A, the inlet and outlet pipes connected to the water pump 40A and the internal wire harness electrically connected to the hinge head electric connector 40B can respectively pass through one opening of the rotating barrel of the lower shell 402 of the hinge head, so as to prevent water leakage in the hinge head assembly 40 from causing short circuit, and the external wire harness electrically connected to the hinge head electric connector 40B can be electrically connected to the water pump 40A without worrying about water-proof. The technical solution of the present application sets the water tank assembly 120 at a position with the same height as the cleaning head 10, and the water pump 40A is also arranged at a position slightly higher than the water tank assembly 120, thereby shortening the length of the overall clean water path from the water tank assembly 120 to the surface of the cleaning roller 40B through the water pump 40A, greatly reducing the large unnecessary water flow height difference of the water pump 40A in the process of driving water flow, improving the working condition of the water pump, reducing the power consumption and noise of the water pump 40A, and facilitating the convenient disassembly of the water pump 40A from the hinge head assembly 40 for maintenance and replacement when the hinge head assembly 40 fails.

[0147] In one embodiment, referring to Figures 12-15 The lock tongue assembly further includes a lock tongue support 404, one side of the lock tongue support 404 upwardly clamps the water pump 40A in the hinge head upper shell 401, the other side of the lock tongue support 404 downwardly abuts against the first spring, the other side of the first spring abuts against the lock tongue 403, and the lock tongue 403 is clamped between the lock tongue support 404 and the hinge head lower shell 402 and partially extends out of the hinge head lower shell 402.

[0148] The hinge head assembly 40 provided by the embodiment, the lock tongue assembly includes the lock tongue support 404, the first spring and the setting of the lock tongue 403, can make the lock tongue 403 always keep the posture of accumulating strength while rotating with the hinge head assembly 40 arbitrarily, make the user always exist the "damping feeling" of the lock tongue 403 sliding on the surface of the lock tongue clamping plate 150 when the handle 30 drives the connecting rod assembly 20 and then drives the hinge head assembly 40 to rotate, when the lock tongue 403 rotates out / turns back to the locking position, because the lock tongue 403 "steps" on the convex point on the surface of the lock tongue clamping plate 150, the user can also feel the slight vibration of "patter" sound through the hand-held handle, and the user can be informed in time that the hinge head assembly 40 is rotating out / turning back to the locking position. The function of the lock tongue assembly makes the locking and unlocking mode switching very simple and intuitive, only needs the user to hold the handle assembly and lightly press the connecting rod assembly 20 and then drives the hinge head assembly 40 to rotate downward, the user can realize the rotation locking / unlocking of the hinge head assembly 40 relative to the cleaning head 10 through the slight vibration of "patter" sound felt by the hand-held handle, conforms to the operation intuition of modern household appliances, and has low learning cost. When it is needed to store the cleaning tool vertically or put into the cabinet, the user can hold the handle assembly and lightly drive the connecting rod assembly 20 and then drives the hinge head assembly 40 to rotate upward, rotates the hinge head assembly 40 to the locking position to lock the state, ensures that the machine stands stably and will not be knocked down by accident.

[0149] In one embodiment, referring to Figures 12-15The hinge head upper shell 401 includes an upper clamping portion and a lower sleeving portion. A circumferential wall of the upper clamping portion is provided with a screw groove corresponding to the nut column (not shown in the figure), and the upper clamping portion is detachably clamped with the rod body assembly 20. A circumferential wall of the lower sleeving portion is provided with an avoiding groove corresponding to the nut column (not shown in the figure), and the lower sleeving portion is detachably fixedly connected with the hinge head lower shell 402. The hinge head upper shell further includes a fixed step ring (not shown in the figure), which is arranged between the upper clamping portion and the lower sleeving portion. When the lower sleeving portion of the hinge head upper shell 401 is sleeved in the opening at the top of the hinge head lower shell 402, a screw can pass through the screw groove and fasten the hinge head lower shell 402 to the hinge head upper shell 401 downward on the upper surface of the fixed step ring. The locking button 405 includes a locking button body and an abutting edge (not shown in the figure) surrounding the bottom of the locking button body. The locking button body can partially protrude from the upper clamping portion of the hinge head upper shell, and the abutting edge limits the locking button body to protrude from the upper clamping portion by a height, which is only the thickness of the wall of the connecting rod assembly 20. The locking button body and the abutting edge are integrally formed.

[0150] The hinge head assembly 40 provided by the embodiment makes the separation of the hinge head assembly 40 and the connecting rod assembly 20 very simple and intuitive. After pressing the locking button 405, the part of the locking button body protruding from the upper clamping portion of the hinge head upper shell is retracted to the top surface of the upper clamping portion, and then the entire connecting rod assembly 20 can be pulled upward. The user can easily separate the two by pressing the locking button 405 with one hand and pulling the connecting rod assembly 20 upward with the other hand. The operation is convenient, and the learning cost is low. Because the separation of the cleaning head 10 provided with the hinge head assembly 40 and the connecting rod assembly 20 can be easily realized, the separation of the connecting rod assembly 20 and the handle assembly 30 is further facilitated. The manufacturer of the cleaning tool can package the cleaning tool in the form of three major parts, i.e., the cleaning head 10 provided with the hinge head assembly 40, the connecting rod assembly 20, and the handle assembly 30, without the need to package the entire cleaning tool. This further reduces the volume required for transportation and packaging, improves the efficiency of the cleaning tool in the circulation link, and reduces the logistics cost of the cleaning tool.

[0151] In one specific embodiment, referring to Figures 12-15The hinge head lower housing 402 includes a rotating cylinder and a sleeve perpendicular to the rotating cylinder. The rotating cylinder has openings at both ends, through which the inlet and outlet pipes of the water pump 40A and the wiring harness electrically connected to the hinge head electrical connector 40B can pass. The bottom of the hinge head upper housing 401 is fitted into the top opening of the sleeve, and the hinge head lower housing 402 can rotate around the axis of the rotating cylinder. At least one nut post extends from the bottom of the hinge head lower housing 402 towards its top opening. A screw groove corresponding to the nut post is provided on the peripheral wall of the hinge head upper housing 401. The hinge head upper housing 401 and the hinge head lower housing 402 are fixedly connected by at least one screw.

[0152] The hinge head assembly 40 provided in this embodiment allows the internal wiring harness, which connects the inlet and outlet pipes of the water pump 40A and the hinge head electrical connector 40B, to pass through one opening in the rotating cylinder of the lower hinge head housing 402. This prevents short circuits caused by water leakage inside the hinge head assembly 40. The external wiring harness connected to the hinge head electrical connector 40B can be electrically connected to the water pump without concern for waterproofing. The combination of the hinge head assembly 40 with the cleaning head housing assembly 110, the water tank assembly 120, and the hinge head locking cover body 130a, and the internal structure of the hinge head assembly 40 including the upper hinge head housing 401, the water pump 40A, the lower hinge head housing 402, and the locking tongue assembly, facilitates easy removal of the water pump 40A from the hinge head assembly 40 for maintenance and replacement in case of water pump 40A failure.

[0153] In one specific embodiment, in addition to the aforementioned technical solution where the hinge head upper shell 401 and hinge head lower shell 402 are fixedly connected by at least one screw, the hinge head upper shell 401 and hinge head lower shell 402 can also be rotatably sleeved together. They do not require fasteners for fixation, but can only rotate relative to each other and cannot be separated at the mating surface. Specifically, both the hinge head upper shell 401 and hinge head lower shell 402 have mating edges extending radially (not shown in the figures) on their mating surfaces. One of them also has a wrapping edge (not shown in the figures) extending from the outer edge of its mating surface with the other, which can wrap around the other's mating edge, thus enabling them to rotate relative to each other without separation.

[0154] The hinge head assembly 40 provided in this embodiment allows the cleaning head 10 and the connecting rod assembly 20 to easily rotate relative to each other through the relative rotation of the upper hinge head shell 401 and the lower hinge head shell 402. When the user pushes and pulls the cleaning head for cleaning, the cleaning head 10 can be flexibly turned as needed, improving the user experience when using cleaning tools.

[0155] In one specific embodiment, see [reference] Figures 12-15The hinge head assembly 20 is used to butt joint the connecting rod assembly 20, and the connecting rod assembly 20 is pivotally connected to the cleaning head 10 through pivoting between the hinge head assembly 40 and the cleaning head 10. The other end of the connecting rod assembly 20 is connected to the handle assembly 30. The main control board and the battery pack can be installed in the handle assembly 30. The main control board is electrically connected to the driving motor 10A for driving the cleaning roller 10B to rotate in the cleaning head 10 and the water pump 40A in the hinge head assembly 40 through the electric connection line bundle penetrating through the connecting rod assembly. The main control board controls the driving motor 10A and the water pump 40A to work.

[0156] The above merely describes the preferred embodiments of the present application, but does not limit the embodiments and the protection scope of the present application. It should be realized by those skilled in the art that any equivalent replacement and obvious change made according to the content of the present application should be included in the protection scope of the present application.

Claims

1. A water tank assembly mountable to a cleaning head, characterised in that, The water tank assembly comprises: a water tank body, which is internally hollow and has a cavity, and has a horizontal semi-cylindrical shape at both ends and a square column shape at the middle part, and has an open mouth covering the entire surface on the only vertical surface of the water tank body, and has a notch in the middle of the upper part of the water tank body, which can accommodate the rotation of the hinge head assembly, and has a connecting mechanism in the middle part of the water tank body, and has a water inlet on the top wall of one end of the water tank body, and further has a water outlet in the middle of the lower part of the water tank body; a sealing side wall, which is provided on the open mouth and has a sealing side wall avoiding notch corresponding to the avoiding notch near the opening slot; wherein the hinge head of the cleaning head is clamped between the hinge assembly, the cleaning head shell body and the hinge head cover body through the connecting mechanism; Preferably, the open mouth of the water tank body is provided with a point gluing groove or an ultrasonic welding groove, and the open mouth of the water tank body is sealed with the sealing side wall at the point gluing groove or the ultrasonic welding groove; Preferably, the water tank body is provided with an avoiding notch near the opening slot, and the sealing side wall is provided with a sealing side wall avoiding notch corresponding to the avoiding notch near the opening slot; Preferably, the water tank body is further provided with a pipeline channel in the middle of the lower part for connecting the water outlet and the water pump installed in the hinge head assembly; the water outlet is a water outlet connector protruding to the side of the pipeline channel; Preferably, the water tank body is provided with an opening slot on the top wall of one end, and the water inlet is provided on the opening slot; Preferably, the water tank assembly further comprises: a flip cover assembly, which can be rotated to open / close the opening slot; Preferably, the flip cover assembly comprises a flip cover body, one end of the flip cover body is provided with a sealing edge extending downward opposite to the water inlet, a sealing ring is sleeved on the outer wall of the sealing edge, the sealing edge seals the water inlet through the sealing ring, a pin shaft is provided at the other end of the flip cover body, the pin shaft is clamped in the pin hole on the surrounding wall of the opening slot, and the flip cover body can be rotated around the pin shaft to open / close the water inlet; Preferably, the flip cover body is provided with an air hole communicating with the cavity in the region opposite to the water inlet, a one-way valve is sleeved on the side of the air hole facing the water inlet, and the water in the cavity cannot overflow from the air hole; Preferably, the water tank body is provided with a first connecting seat on the top wall of the middle part, and a second connecting seat on the front wall of the middle part, and the connecting mechanism comprises the first connecting seat and the second connecting seat; Preferably, the sealing side wall is provided with two connecting ears at both ends, and the water tank assembly and the cleaning head shell body can be fixedly connected through the two connecting ears.

2. A cleaning head characterized by, The cleaning head shell assembly comprises: a cleaning head shell body provided with two side walls, one of which is fixedly connected with a hinge seat, the hinge seat is hinged with one end of a driving motor, and the output end of the other end of the driving motor is clamped with the other side wall; a cleaning roller, which is sleeved on the driving motor, and the output end is coupled to drive the cleaning roller to rotate and scrub the surface to be cleaned; the cleaning head shell body is provided with a water guide tip part which abuts against the outer layer of the cleaning roller in the saturated state and guides the sewage; a squeezing roller, which is rotatably clamped between the two side walls, and presses the upper surface of the cleaning roller and is eccentrically arranged close to the water guide tip part relative to the cleaning roller; The water tank assembly according to claim 1 is detachably connected with the cleaning head shell assembly, and the water tank assembly provides clean water for flushing the surface of the cleaning roller. The clean water outlet arranged on one of the side walls sprays clean water directly to wash the surface of the cleaning roller. The anti-overflow plate is arranged on the upper part of the cleaning head body away from the cleaning roller relative to the water guide tip and the extrusion roller. The water guide tip, the anti-overflow plate, the extrusion roller and the cleaning roller form a water tank space.

3. The cleaning head of claim 2, wherein, Further comprising: The garbage box is inserted / extracted into the cleaning head body through one of the side walls. The garbage is brought into the garbage box by the rotation of the cleaning roller. Preferably, in the cross section perpendicular to the axial direction of the cleaning roller, the cleaning head body is further provided with a transverse partition plate connected with the water guide tip and extending away from the cleaning roller, and the other end of the transverse partition plate extends upwardly with a vertical wall. The two side walls, the water guide tip, the transverse partition plate and the vertical wall jointly form a sewage storage cavity. Preferably, the anti-overflow plate is provided with a hole or a groove connecting the water tank space and the sewage storage cavity. Preferably, the hole or the groove is arranged on one side of the sewage storage cavity, and is provided with a one-way filtering device. The sewage guided by the water guide tip can only flow to the sewage storage cavity through the one-way filtering device from the water tank space. Preferably, the cleaning head further comprises: The upper cover is arranged above the extrusion roller and can be rotated to open near the side of the cleaning roller along the axis parallel to the cleaning roller. Preferably, the lower surface of the upper cover extends downwardly with an anti-overflow rim parallel to the axial direction of the cleaning roller. The anti-overflow rim is combined with the top end of the anti-overflow plate to separate the upper part of the water tank space from the sewage storage cavity. Preferably, the lower surface of the upper cover is provided with an abutting part which abuts against the extrusion roller to clean the surface of the extrusion roller. Preferably, the abutting part and the extrusion roller are spaced apart and abut against each other along the axial direction of the extrusion roller. The abutting part is a plurality of point-shaped protrusions arranged at intervals.

4. The cleaning head of claim 2, wherein, The cleaning roller comprises a cleaning roller body, and the surface of the cleaning roller body is provided with a sponge layer. Preferably, when the sponge layer of the cleaning roller body is in a non-saturated state, a gap is formed between the lower surface of the water guide tip and the cleaning roller body, and the seepage sewage drops on the cleaning roller body or in the cleaning head body.

5. The cleaning head of claim 4, wherein, The extrusion roller is driven to rotate by the friction force of the cleaning roller body.

6. The cleaning head of claim 4, wherein, The output end of the driving motor is connected with an end torsion assembly, and the end torsion assembly is clamped with the other side wall. Preferably, the cleaning head further comprises: The transmission mechanism is arranged on the side wall clamped with the end torsion assembly and is in transmission connection with the driving motor through the end torsion assembly to simultaneously drive the cleaning roller and the extrusion roller to rotate. Preferably, the transmission mechanism comprises: The driving gear is coupled with the end torsion assembly. The first driven wheel set is in mesh with the driving gear and comprises at least one first driven wheel and a second driven wheel. The first driven wheel is in mesh with the driving gear, the first driven wheel is in mesh with the second driven wheel, and the second driven wheel is in transmission connection with the coupling end of the extrusion roller.

7. The cleaning head of claim 2, wherein, Further comprising: The detachable scraper assembly is detachably connected to the lower edge of the cleaning head body near the cleaning roller, close to the surface to be cleaned and located between the cleaning roller and the garbage box. The side surface close to the cleaning roller of the detachable scraper assembly is arc-shaped and adapted to the surface of the cleaning roller. Preferably, the cleaning head body further comprises a garbage guide arranged between the detachable scraper assembly and the garbage box. The upper surface of the garbage guide or the garbage guide and the detachable scraper assembly forms an inclined garbage guide area. The garbage guide area is arranged below the extrusion roller and is in communication with the garbage box.

8. The cleaning head of claim 6, wherein the squeeze roller Comprising: The extrusion roller body is provided with an inner cavity. A bearing is arranged at one end of the extrusion roller body, and a cover is arranged at the opening of the inner cavity; An elastic support shaft is arranged at one end of the extrusion roller body, and includes a locking member and a spring. Part of the locking member is limited in the inner cavity by the bearing, and the locking member is elastically connected to the inner wall of the inner cavity by the spring. The locking member extending out of the inner cavity can be locked with a side wall of the cleaning head body. Preferably, a gear connecting part is arranged at the other end of the extrusion roller body relative to the bearing and the elastic support shaft, and the gear connecting part includes: A fixed part connected to the extrusion roller body; A connecting part connected to the fixed part and connected to the second driven gear; In use, the driving motor rotates to drive the cleaning roller body to rotate, and at the same time, the driving motor drives the driving gear to rotate, the driving gear drives the second driven gear to rotate, and the second driven gear drives the extrusion roller body to rotate.

9. The cleaning head of claim 2, wherein, The central axis of the extrusion roller deviates from the central axis of the cleaning roller by 5°-65° in the vertical direction; Preferably, the cleaning head further includes a hinge head assembly, which is clamped between the cleaning head shell assembly, the water tank assembly, and the hinge head clamping cover body. The hinge head assembly can rotate around an axis parallel to the axis of the cleaning roller, and the angle between the hinge head assembly and the cleaning head shell assembly is 85°-180°. When the hinge head assembly rotates away from the locking position, the hinge head assembly can continue to rotate freely until the connecting rod assembly and the cleaning head shell assembly form an angle of 180°. When the hinge head assembly rotates back to the locking position, the hinge head assembly and the cleaning head shell assembly form an angle of 85°. Preferably, the hinge head assembly includes: A hinge head upper shell, one end of which is detachably connected to the connecting rod assembly; A water pump for delivering clean water to the surface of the cleaning roller of the cleaning head; A hinge head lower shell, which is clamped between the cleaning head shell assembly, the water tank assembly, and the hinge head clamping cover body. The bottom of the hinge head upper shell is sleeved in the top opening of the hinge head lower shell. A lock tongue assembly, which is limited in the hinge head lower shell and includes a lock tongue. The lock tongue can partially extend out of the hinge head lower shell to be clamped on a lock tongue clamping plate installed on the cleaning head shell body. The lock tongue can rotate together with the hinge head lower shell. When the lock tongue rotates away from the locking position, the hinge head assembly can continue to rotate freely until the connecting rod assembly and the cleaning head shell assembly form an angle of 180°. When the lock tongue rotates back to the locking position, the hinge head assembly and the cleaning head shell assembly form an angle of 85°. Preferably, the lock tongue assembly further includes a lock tongue support. The upward side of the lock tongue support can clamp the water pump in the hinge head upper shell. The downward side of the lock tongue support abuts against the first spring, and the other side of the first spring abuts against the lock tongue. The lock tongue is clamped between the lock tongue support and the hinge head lower shell and can partially extend out of the hinge head lower shell. Preferably, the hinge head upper shell is provided with a locking button and a locking button support. The outward side of the locking button support abuts against the second spring, and the other side of the second spring abuts against the locking button. The locking button partially extends out of the hinge head upper shell to realize the clamping of the hinge head assembly on the connecting rod assembly. Preferably, the hinge head upper shell is provided with a clamping hole for clamping the hinge head electric connection plug. The water pump is electrically connected to the hinge head electric connection plug. The water pump can be electrically connected to the connecting rod assembly and the handle assembly through the wire harness electrically connected to the hinge head electric connection plug. Preferably, the lower shell of the hinge head comprises a rotating cylinder and a sleeve cylinder which is perpendicular to the rotating cylinder, the rotating cylinder is open at both ends, the inlet and outlet pipes of the water pump and the wire harness which is electrically connected with the plug of the hinge head can pass through the openings of the rotating cylinder; the bottom of the upper shell of the hinge head is sleeved in the top opening of the sleeve cylinder, and the lower shell of the hinge head can rotate around the axis of the rotating cylinder.

10. The cleaning head of claim 9, wherein, The upper shell of the hinge head is rotatably sleeved with the lower shell of the hinge head.

11. The cleaning head of claim 9, wherein, The bottom of the lower shell of the hinge head extends at least one nut column towards the top opening thereof, the circumferential wall of the upper shell of the hinge head is provided with screw grooves corresponding to the nut column, and the upper shell of the hinge head is fixedly connected with the lower shell of the hinge head through at least one screw; Preferably, the upper shell of the hinge head comprises: an upper clamping part, the circumferential wall of which is provided with screw grooves corresponding to the nut column, and the upper clamping part is detachably clamped with the rod assembly; a lower sleeving part, the circumferential wall of which is provided with avoiding grooves corresponding to the nut column, and the lower sleeving part is detachably fixedly connected with the lower shell of the hinge head; Preferably, the upper shell of the hinge head further comprises: a fixed step ring, which is arranged between the upper clamping part and the lower sleeving part, when the lower sleeving part of the upper shell of the hinge head is sleeved in the top opening of the lower shell of the hinge head, the screw can pass through the screw groove and tightly connect the lower shell of the hinge head with the upper shell of the hinge head downwards on the upper surface of the fixed step ring.

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