Cleaning head and cleaning tool

Abstract

The invention relates to a cleaning head and a cleaning tool. The cleaning head comprises a shell, a mopping and sweeping unit and an extrusion unit. The mopping and sweeping unit comprises a roller which is arranged at the bottom of the shell, and spiral protrusions are arranged on the surface of the roller. The extrusion unit is arranged in parallel with the roller and used for extruding the roller, and a water tank is formed at an included angle with the roller; along with rotation of the roller, the spiral protrusions push water to make water flow faster, and water is prevented from being accumulated in the water tank. The cleaning tool comprises a handheld part, a cleaning head hinged to the handheld part and a water purifying tank. The clean water tank is arranged at the end, close to the cleaning head, of the handheld part and provides clean water to wash the surface of the roller. The water-dust circulation cleaning technology is applied, mixed garbage including dry garbage, wet garbage, viscous garbage and the like on the ground can be cleaned, the water content of the roller can be adjusted according to the garbage types, and the cleaning effect is more ideal.

Description

[0001] This application is a divisional application of Chinese patent application No. 202010075492.6 and invention name “A Cleaning Tool”, the contents of which are incorporated herein by reference. Technical Field

[0002] The invention relates to a cleaning device, in particular to a cleaning head and a cleaning tool for cleaning dry garbage, wet garbage and mixed garbage including sticky garbage on a flat ground. Background Art

[0003] Usually people clean the floor with tools such as brooms, mops, floor wipes, etc. These tools mainly rely on people's manual operation to complete the cleaning work. With the advancement of technology, people's requirements for floor cleaning tools are gradually increasing.

[0004] The first to appear was the vacuum cleaner, whose working principle is "air-dust circulation", that is, it relies on electricity to generate negative pressure to absorb garbage, dust, etc. on the ground. However, due to the limitations of its working principle, the vacuum cleaner cannot clean some garbage and stains that are firmly attached to the ground. Once liquid enters the vacuum cleaner, it is easy to cause damage to the vacuum cleaner. Therefore, a new floor cleaner has now appeared. The new floor cleaner drives the cleaning cylinder (cleaning roller) to wipe the ground through the operation of the motor. The cleaning cylinder usually uses a sponge cylinder or a scouring pad. At the same time, the floor cleaner will also be equipped with a water supply system and a sink to clean the cleaning cylinder, thereby perfectly cleaning the ground. The cleaned sponge cylinder usually uses a water squeezing piece to remove the water inside, otherwise the water will flow to the ground when the sponge cylinder is squeezed against the ground.

[0005] The water content of garbage is different. At present, the water content of mopping roller sponges is the same, so the roller cannot adapt to the type of garbage and adjust its own water content.

[0006] Moreover, the garbage in the home and kitchen is a mixture of dry and wet garbage, and may also contain various soups (syrup, ketchup, etc.) and other sticky garbage. Existing cleaning tools are powerless and helpless against sticky garbage, especially a mixture of dry garbage, wet garbage and sticky garbage.

[0007] The contents of the background technology section are merely the technologies known to the public and do not necessarily represent the existing technologies in the field. Summary of the invention

[0008] In view of at least one of the defects in the prior art, in a first aspect, the present disclosure provides a cleaning head, comprising:

[0009] case;

[0010] The sweeping unit comprises a roller, which is arranged at the bottom of the housing, wherein the roller comprises an inner layer of hard rubber and a sponge layer wrapped outside the hard rubber, and a spiral protrusion is arranged on the surface of the roller;

[0011] A clean water supply unit, which delivers clean water to the sponge layer;

[0012] The extrusion unit is arranged in parallel with the drum and is used to extrude the drum, and a water trough is formed at the angle between the extrusion unit and the drum.

[0013] As the drum rotates, clean water enters the sponge layer, and dirty water overflows from the sponge layer when squeezed by the squeezing unit. The water flow and the squeezing unit together peel off the dirt attached to the surface of the sponge layer, and the spiral protrusions push the water to make the water flow faster, thereby preventing water from accumulating in the water tank.

[0014] In one or some embodiments, the sweeping unit further includes a roller driving mechanism and a roller transmission mechanism, and the roller driving mechanism drives the roller to rotate through the roller transmission mechanism.

[0015] In one or some embodiments, the sweeping unit further comprises a shovel bar, which is fixed on the shell and has an arc-shaped working surface, and a gap of uniform distance is formed between the arc-shaped working surface and the outer circumference of the drum.

[0016] In one or some embodiments, one end of the hard rubber is hollow and is sleeved on the driving motor, and the other end of the hard rubber is fixed with a pressing and telescopic device to achieve card connection / separation with the shell; the sewage is guided away along the direction of the threaded protrusion.

[0017] In one or some embodiments, the driving motor is connected to the hard rubber through a connecting piece to drive the hard rubber to rotate.

[0018] In one or some embodiments, the push-to-telescopic device includes a button, a spring and a block. When the button is subjected to force, the spring is compressed to drive the block to move away from the position that resists the hard rubber shaft, so that the end of the hard rubber shaft can be moved out of the roller mounting groove on the shell.

[0019] In one or some embodiments, the thread protrusion is a line extending from one end of the drum to the other end.

[0020] In one or some embodiments, the number of the threaded protrusions is two, with the same pitch, extending from opposite sides of one end of the roller to the other end of the roller respectively.

[0021] In one or some embodiments, there are two thread protrusions, which start from the same generatrix at both ends of the roller and extend toward the middle of the roller in opposite spiral directions.

[0022] In one or some embodiments, a linear protrusion parallel to the axial direction is provided in the middle position of the drum, and the linear protrusion is connected to the two threaded protrusions.

[0023] In one or some embodiments, the roller has a diameter of 15 mm to 700 mm.

[0024] In one or some embodiments, the sponge layer has a thickness of 3-15 mm.

[0025] In one or some embodiments, the sponge layer is made of polyvinyl alcohol foaming.

[0026] In one or some embodiments, the sponge layer has a density of 0.25-0.5 g / cm3, a water absorption rate of 0.5-1.5 g / cm3, a Shore A hardness of 40-70, and a water storage rate of 0.2-1.0 g / cm3.

[0027] In one or some embodiments, the cleaning head further comprises:

[0028] Dry waste collection units, including waste boxes, to collect solid waste;

[0029] The cleaning unit is arranged above the entrance of the garbage box to separate and collect the solid garbage attached to the surface of the drum.

[0030] In one or some embodiments, the cleaning unit comprises:

[0031] The scraper bar assembly includes a scraper bar bracket, a friction portion and a drainage portion; the scraper bar bracket is fixed at a position above the garbage box close to the drum; the friction portion is formed by the scraper bar bracket extending in the width direction, and the end of the friction portion interferes with the drum surface; the drainage portion is located at both ends of the scraper bar bracket, extending along the height direction of the scraper bar bracket, the drainage portion is in contact with the drum, and the drainage portion is used to seal and guide water to prevent the squeezed water from overflowing and flowing into the garbage box.

[0032] In one or some embodiments, the edge of the friction portion is toothed.

[0033] In one or some embodiments, a plurality of alignment blocks are arranged at the position of the scraper support facing away from the friction part and the drainage part, and a plurality of recesses are arranged on the shell connected to the scraper support, and the alignment blocks cooperate with the recesses.

[0034] In one or some embodiments, the cleaning unit further comprises:

[0035] The roller brush assembly comprises a roller brush shaft and bristles. The bristles are arranged on the circumferential surface of the roller brush shaft and contact the surface of the roller. The bristles sweep the floating dust and other solid garbage on the surface of the roller into the garbage box.

[0036] In one or some embodiments, the roller brush shaft is connected to a third drive motor via a coupling, and the third drive motor drives the roller brush assembly to rotate.

[0037] In one or some embodiments, the cleaning unit further comprises:

[0038] The straight-row brush is fixed on the shell of the cleaning head and is located at the upper end of the garbage box. The straight-row brush includes bristles, which are in contact with the surface of the drum. As the drum rotates, the bristles sweep away fine garbage such as fluff and floating dust adhering to the drum and drop them into the garbage box.

[0039] In one or some embodiments, the cleaning head further comprises:

[0040] A sewage tank is arranged at the center of the shell to collect sewage after cleaning the drum. The water tank is provided with a sewage outlet, and the sewage tank is connected to the sewage outlet through a pipeline.

[0041] In one or some embodiments, the extrusion unit comprises:

[0042] The long strip object is fixed on the shell and presses the roller.

[0043] In one or some embodiments, the extrusion unit comprises:

[0044] Fixed seat;

[0045] The strip-shaped protrusion is fixed on the shell through the fixing seat to press the roller.

[0046] In one or some embodiments, the extrusion unit comprises:

[0047] The squeezing roller is fixed on the cleaning head at both ends to squeeze the cylinder.

[0048] In a second aspect, the present disclosure further provides a cleaning tool, comprising:

[0049] Handheld part;

[0050] The cleaning head as described in the first aspect is hinged to the handheld part;

[0051] A clean water tank is arranged at one end of the handheld portion close to the cleaning head to provide clean water to flush the surface of the drum.

[0052] In one or some embodiments, the clean water tank comprises clean water outlets arranged in a long strip shape, and the clean water outlets are aligned with the surface of the drum between the squeezing roller and the scraper assembly.

[0053] In one or some embodiments, the water tank is further provided with a clean water inlet, which is higher than the sewage inlet, and the clean water tank is connected to the clean water inlet through a pipeline.

[0054] In one or some embodiments, a detachable filter box / filter screen is provided in the middle of the sewage tank to separate it into a sewage box and a clean water box. The clean water box is connected to the clean water outlet through a pipeline, and the clean water outlet guides the clean water into the water tank to clean the drum surface.

[0055] In one or some embodiments, the cleaning tool further comprises:

[0056] The water pump extracts the water in the sewage tank and filters it to the clean water tank. The water in the clean water tank flows to the surface of the drum. The sewage after washing the surface of the drum flows to the sewage tank, forming a water cycle.

[0057] The solutions of various embodiments of the present disclosure apply the "water-dust circulation" cleaning technology, which can clean mixed garbage on the ground including dry garbage, wet garbage, sticky garbage, etc., and can adjust the water content of the drum according to the type of garbage, so as to achieve a more ideal cleaning effect.

[0058] The cleaning head disclosed herein has an extrusion unit that squeezes out the liquid locked in the outer sponge to keep the outer sponge in an unsaturated state, thereby enabling the cleaning tool to continuously clean liquid garbage; the clean water supply unit and the extrusion unit work together to keep the roller in contact with the ground in a clean state at all times.

[0059] The spiral protrusion on the roller of the cleaning head disclosed in the present invention can guide the sewage squeezed out by the squeezing unit to a designated position, such as a sewage pipe suction nozzle, along the thread direction, thereby preventing the sewage from overflowing and causing secondary pollution of the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0061] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the cleaning tool disclosed in the present invention;

[0062] Figure 2 for Figure 1 Exploded view of the cleaning head;

[0063] Figure 3 for Figure 1 Schematic diagram of the internal structure of the cleaning head;

[0064] Figure 4 for Figure 1 Schematic diagram of the cleaning head cross section;

[0065] Figure 5 for Figure 1 Schematic diagram of the bottom surface of the cleaning head;

[0066] Figure 6 for Figure 1 Schematic diagram of the cleaning head from the side;

[0067] Figure 7 A schematic diagram for forming the water squeezing zone;

[0068] Figure 8 This is a schematic diagram of the drum structure of an embodiment of the present disclosure;

[0069] Fig. 9 is a cross-sectional view of a cleaning tool with the above-mentioned roller;

[0070] Fig.10 for Fig. 9 Schematic diagram of the side appearance;

[0071] Fig.11 A perspective schematic diagram of an embodiment of a roller;

[0072] Fig.12 This is a schematic diagram of the drum being disassembled;

[0073] Fig.13 for Fig.12 Schematic diagram from another perspective;

[0074] Fig.14 It is a schematic structural diagram of an embodiment of a squeezing roller;

[0075] Fig.15 It is a schematic structural diagram of another embodiment of the squeezing roller;

[0076] Fig.16 A schematic diagram of threaded water guide in one embodiment;

[0077] Fig.17 It is a schematic diagram of the secondary water tank structure;

[0078] Fig.18 For Fig.14 Squeeze roller and Figure 8 A schematic diagram of the internal structure of the cleaning tool of the drum;

[0079] Fig.19 A schematic diagram of a water tank formed by the interference between the squeezing roller and the drum in one embodiment;

[0080] Fig. 20 A schematic diagram of a water tank formed by the interference between the squeezing roller and the drum in another embodiment;

[0081] Fig.21 The schematic diagram of the structure of the cleaning unit is a straight brush;

[0082] Fig. 22 The schematic diagram of the structure of the cleaning unit is a combination of a scraper bar assembly and a straight brush;

[0083] Fig.23 A schematic diagram of the structure of a scraper strip according to an embodiment;

[0084] Fig.24 It is a structural schematic diagram of an embodiment including a sewage tank and a clean water tank;

[0085] Fig.25 is a three-dimensional schematic diagram of a cleaning tool with a water volume adjustment unit;

[0086] Fig.26 for Fig.25 A longitudinal section of

[0087] Fig. 27 This is an exploded view of the upper part of the handheld part;

[0088] Fig.28 This is an exploded view of the lower part of the handheld part;

[0089] Fig.29 This is a schematic diagram of the water tank structure. DETAILED DESCRIPTION

[0090] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0091] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0092] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0093] In the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0094] The disclosure below provides many different embodiments or examples to realize different structures of the present disclosure. In order to simplify the disclosure of the present disclosure, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present disclosure. In addition, the present disclosure can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present disclosure provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0095] The preferred embodiments of the present disclosure are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0096] The present invention relates to a cleaning tool for cleaning a floor, in particular a smooth and flat small-area floor, such as a home or kitchen floor. The cleaning tool is particularly suitable for cleaning mixed garbage containing dry garbage, wet garbage, and viscous materials such as noodles, porridge, ketchup, etc.

[0097] The dry garbage mentioned in the present disclosure specifically refers to granular garbage, such as fruit peels, melon seed shells, rice grains, paper scraps, etc.

[0098] Wet garbage refers to liquid garbage, such as water, beverages, etc.

[0099] Viscous garbage includes soup, stew, porridge, ketchup, chocolate sauce and other garbage with a certain viscosity.

[0100] Other garbage such as dust, ground marks, etc. are also cleaning objects disclosed in the present invention.

[0101] Figure 1 is a three-dimensional schematic diagram of an embodiment of the cleaning tool disclosed herein, Figure 2 This is an exploded view of the cleaning head; Figure 3 This is a schematic diagram of the internal structure of the cleaning head; Figure 4 is a cross-sectional schematic diagram, Figure 5 This is a schematic diagram of the bottom surface of the cleaning head. Figure 6 This is a schematic diagram of the cleaning head from the side. Figures 1 to 6 As shown, the cleaning tool of the present disclosure includes a cleaning head and a handheld part connected to each other. The handheld part includes a cleaning rod 301 and an extension rod 302, and the cleaning rod 301 and the extension rod 302 are connected by a connecting structure 304. The cleaning rod 301 is connected to the cleaning head by a hinge structure 305. The operator drives the cleaning head to move on the ground surface through the handheld part to clean up various garbage scattered on the ground surface.

[0102] The cleaning head of the cleaning tool disclosed herein comprises a housing 500, a cleaning module is installed at the bottom of the housing and inside the housing, and the cleaning module separates the garbage from the ground and separates it inside the housing. Wheels 190 are installed on the bottom surface of the housing to reduce the contact between the non-cleaning module and the ground, making dragging more labor-saving.

[0103] The cleaning module includes a sweeping unit 110 arranged at the bottom of the shell, a squeezing unit 120 arranged in parallel with the sweeping unit, a dry garbage collecting unit 150 arranged behind the sweeping unit for storing dry garbage, a cleaning unit 130 arranged at the entrance of the dry garbage collecting unit 150, a sewage collecting unit 140 and a clean water supply unit 160.

[0104] The sweeping unit 110 includes a roller 111, a shovel bar 112, a roller driving mechanism 113 and a roller transmission mechanism 114. The roller driving mechanism drives the roller 111 to move in a Figure 4 The shovel bar 112 is fixed on the housing 500 and has an arc-shaped working surface. A gap with a uniform distance is formed between the arc-shaped working surface and the outer circumference of the roller 111.

[0105] The roller 111 includes an inner layer of hard rubber and a sponge layer wrapped outside the hard rubber. The end of the hard rubber can be fixed to the housing 500 through a bearing or other connecting piece. The roller driving mechanism 113 drives the hard rubber to rotate around its axis through the roller transmission mechanism 114, driving the sponge layer to rotate, so that the surface of the sponge layer performs a circular motion.

[0106] When the drum 111 rolls over the ground, the dry garbage particles on the ground compress and deform the sponge layer, and the sponge layer wraps the dry garbage particles through deformation, so that the dry garbage particles are separated from the ground and rotate with the drum 111. When the drum 111 reaches the position of the shovel bar 112, the dry garbage particles leave the ground and are squeezed by the shovel bar 112, and continue to rotate with the drum 111. When the drum 111 passes the shovel bar 112 and reaches the entrance of the dry garbage collection unit 150, the sponge layer 111b recovers and deforms due to the loss of the pressure of the shovel bar 112, releasing the dry garbage particles wrapped in the sponge layer and bouncing into the dry garbage collection unit 150.

[0107] The axis of the squeezing unit 120 is arranged parallel to the roller 111, and can be fixed to the housing 500 through both ends, or fixed to the housing 500 through a snap-fit ​​structure. The hardness of the squeezing unit 120 is much greater than the hardness of the sponge layer 111b. The distance between the squeezing unit 120 and the axis of the roller 111 is less than the sum of the radii of the two, so that after assembly, the squeezing unit 120 squeezes the surface of the roller. A squeezing area B is formed at the position where the squeezing unit 120 faces the roller 111.

[0108] Figure 7 It is a schematic diagram of the formation of the water squeeze zone. Figure 7 As shown, the squeezing unit 120 interferes with the drum 111, and squeezes the sponge layer 111b of the drum at the interference point. In the figure, the drum 111 rotates clockwise, and a squeezing area B is formed below the squeezing unit 120 in the figure. The water carried on the sponge layer 111b of the drum flows out after being squeezed and is collected by the sewage collection unit 140. After the drum passes the wet garbage, the sponge layer continues to rotate clockwise with the wet garbage. On the drum, the sponge layer between the grounding point M (the position in contact with the ground) and the squeezing point N (the position in contact with the squeezing unit 120) contains sewage. After being squeezed by the squeezing unit 120, the sewage leaves the sponge layer in the squeezing area B and is collected by the sewage collection unit 140, so that the water content of the sponge layer passing through the squeezing point N is unsaturated. When it rotates to the M point again and contacts the ground, it can continue to absorb water. In this way, the cleaning tool can continuously absorb the accumulated water on the ground to avoid the sponge being saturated and unable to absorb water effectively.

[0109] The cleaning tool of the present disclosure further includes a clean water supply unit 160. The clean water supply unit 160 directly or indirectly delivers clean water to the sponge layer 111b. The clean water enters the sponge layer and overflows from the sponge layer when squeezed by the squeezing unit 120, peeling off the dirt attached to the surface of the sponge layer 111b, thereby cleaning the surface of the drum.

[0110] When the roller rolls over the sticky garbage on the ground, the sticky garbage adheres to the surface of the sponge layer 111b. The clean water provided by the clean water supply unit 160 washes away the sticky garbage layer attached to the surface of the sponge layer 111b.

[0111] In order to keep the sponge layer relatively dry after squeezing, the clean water supply unit 160 sets the clean water outlet in the squeezing area. In the squeezing area, the sponge layer 111b absorbs clean water and becomes saturated. After being squeezed by the squeezing unit 120, the wet garbage and water locked in the sponge layer and absorbed from the ground are discharged. The process of liquid discharge takes away the sticky garbage on the surface of the sponge layer 111b, so that the surface of the sponge layer 111b remains clean. Therefore, the present disclosure can clean the surface of the roller brush 111 without the operator having to do it or interrupt the cleaning work. In the process of pushing the roller, the surface of the roller brush in contact with the ground is clean.

[0112] The present disclosure further includes a cleaning unit 130. The cleaning unit 130 is disposed above the entrance of the dry garbage collection unit 150. When the drum surface passes the upper end of the shovel bar and reaches the entrance of the dry garbage collection unit 150, the solid garbage attached to its surface cannot be separated from the sponge layer 111b by the elasticity and self-weight of the sponge, and the cleaning unit 130 scrapes it off, and the scraped garbage falls under the action of its own weight and falls into the dry garbage collection unit 150. The cleaning unit 130 is particularly suitable for some light and small garbage that is easy to adhere, such as paper pieces. The cleaning unit 130 keeps the surface of the sponge layer 111b free of dry garbage.

[0113] The cleaning tool of the present disclosure further includes a water circulation module, which includes a sewage collection unit 140 and a clean water supply unit 160 connected by pipelines. Sewage is squeezed out of the drum 111, and the squeezed sewage is collected to the sewage collection unit 140 through the pipeline, and enters the clean water supply unit 160 after purification, and is recycled again, and sprayed to the above-mentioned squeezing area again to clean the roller brush.

[0114] The beneficial effects of the present disclosure are:

[0115] When the present invention is used to clean the floor, the wet outer sponge contacts the floor without raising dust on the floor, and has the effect of a common mop, thereby preventing secondary pollution.

[0116] The outer sponge and the shovel bar cooperate with each other to completely collect solid waste;

[0117] The cleaning unit separates and collects the solid waste attached to the outer sponge, and keeps the surface of the outer sponge free of solid waste;

[0118] The drum absorbs wet garbage on the ground. When the water inside is squeezed out, the sticky garbage attached to the drum surface is peeled off and diluted. The water-soluble part is taken into the sewage tank, and the water-insoluble part is peeled off from the drum and enters the solid garbage tank, so that the sticky garbage can be processed and the dry and wet garbage can be separated.

[0119] The squeezing unit squeezes out the liquid locked in the outer sponge to keep the outer sponge unsaturated, so that the cleaning tool can continuously clean up the liquid garbage;

[0120] The clean water supply unit and the squeezing unit work together to keep the roller in contact with the ground always clean;

[0121] Therefore, the present invention can clean sticky garbage, especially a mixture of various garbage, and can separate dry and wet garbage, and continuously keep the outer sponge surface of the drum clean.

[0122] The various components and the combination relationship of the components disclosed in the present invention are not unique, and are described one by one below.

[0123] Embodiment of the drum

[0124] Figure 8 FIG. 1 is a schematic diagram of a drum structure according to an embodiment of the present disclosure. Figure 8 As shown, the roller includes a hard rubber 111c located at the axis and a sponge layer 111b wrapped and fixed on the circumferential surface of the hard rubber.

[0125] The density and hardness of the sponge have a direct impact on the water absorption and water storage rate (also known as water lock). When the density of the sponge increases to a certain extent, the water absorption will decrease, the hardness will increase, and the water storage rate will increase; conversely, when the density of the sponge decreases, the water absorption will increase, the hardness will decrease, and the water storage rate will decrease.

[0126] The roller of this embodiment has only one sponge layer, and the sponge layer 111b is made of polyvinylalohol (PVA) foam. The density of PVA sponge is 0.25-0.5g / cm3, and the water absorption rate is 0.5-1.5g / cm3. The Shore A hardness of PVA sponge is 40-70. The water storage rate of PVA sponge is 0.2-1.0g / cm3. The sponge layer of the present disclosure has the above characteristics, so compared with the existing single-layer ordinary sponge roller, it has better effects:

[0127] The sponge layer has both suitable water absorption performance and water storage rate, as well as suitable density and hardness. This allows the sponge to deform just right during the mopping process to wrap the garbage particles, and when it passes the restriction of the shovel bar, it can use its own elasticity to eject most of the garbage particles, separate from the sponge layer, and fall into the dry garbage collection unit, so that nothing is missed; and when dealing with accumulated water on the ground, the sponge can absorb more water, and less water will remain on the mopped ground.

[0128] The single-layer sponge layer disclosed in the present invention will not cause the double-layer sponge to be squeezed and separated from each other, thereby shortening the life of the roller.

[0129] The thickness of the sponge layer of the present invention is generally 3-15 mm, and its deformation is sufficient to wrap common granular garbage. The household cleaning tool is equipped with a 5-10 mm thick sponge layer to handle common dry garbage on the household floor.

[0130] The diameter of the roller disclosed in the present invention can be as small as 15 mm or as large as 700 mm.

[0131] For example, a 3mm thick sponge layer is attached to the outside of a solid hard rubber rod with a diameter of 9mm and assembled into the above-mentioned cleaning tool. It can process dry garbage with small particle size and is used in relatively clean places such as exhibition centers and museums.

[0132] The drum with a diameter of 700mm is generally used outdoors or in places where there are large dry garbage particles.

[0133] On the surface of the drum, a spiral protrusion may be provided, which may be referred to as a first spiral protrusion 111f. Figure 8 As shown, there is one spiral protrusion extending from one end of the roller to the other end. In other embodiments, there can be two spiral protrusions, with the same pitch, extending from opposite sides of one end of the roller to the other end of the roller. That is, the starting ends of the two spiral protrusions are located on the same generatrix of the roller. In other embodiments, the arrangement of the two spiral protrusions can also be different: starting from the same generatrix at both ends of the roller, they extend toward the middle in opposite spiral directions. At the proximity of the two spiral protrusions, that is, the middle part of the roller, there is a straight protrusion parallel to the axial direction, which is connected to the two spiral protrusions.

[0134] Fig. 9 is a cross-sectional view of a cleaning tool with the above-mentioned roller, Fig.10 for Fig. 9 Schematic diagram of the side appearance; Fig.11 A perspective schematic diagram of an embodiment of a roller; Fig.12 This is a schematic diagram of the drum being disassembled; Fig.13 for Fig.12 Another perspective diagram of . Figures 8 to 12 As shown, one end of the hard rubber includes a connecting shaft, and the other end is a hollow cylinder.

[0135] One end of the driving motor 113a is fixed to the cleaning head through a fixing seat 113e and a rotating shaft 113c, and the other end can rotate around the rotating shaft at a certain angle. The hollow end of the hard rubber 111c is sleeved on the motor, and the end abuts against the driving motor 113a. The other end of the hard rubber is fixed to the pressing and telescopic device on the cleaning head. The pressing and telescopic device 113f includes parts such as a button, a spring, and a stopper. When the button is stressed, the compression spring drives the stopper to move away from the position that resists the hard rubber. At this time, the end of the hard rubber 111c can be moved out of the roller mounting slot on the cleaning head shell, and the other end drives the driving motor 113a therein to rotate around the rotating shaft 113c, forming a Fig.12 , 13 The roller 111 can be removed by pulling the roller out of the motor. When the button of the telescopic device is pressed, the block retracts, and when the button is released, the block resets. The reverse operation can be performed to install the roller on the cleaning head. Alternatively, the telescopic device is set on the roller, and when the button is pressed, the spring drives the block to retract and push out from the concave part of the cleaning head housing of the block, so that the roller is freed from the restraint of the cleaning head, and the roller can be easily taken out at this time.

[0136] The roller disclosed in the present invention can also be made into a structure with both ends blocked, and the driving motor is connected to the roller through a connecting piece to drive the roller to rotate. The cleaning tool with the roller driving motor can reduce the operator's thrust on the cleaning tool, which is suitable for operators with insufficient strength.

[0137] The spiral protrusion on the drum can guide the sewage squeezed out by the extrusion unit to a designated location along the thread direction, such as the suction nozzle of a sewage pipe, so as to prevent sewage from overflowing and causing secondary pollution of the ground.

[0138] Embodiment of the extrusion unit

[0139] The squeezing unit disclosed in the present invention includes a long strip object arranged in parallel and interfering with the roller. The long strip object is fixed on the housing of the cleaning head and interferes with the roller. The hardness of the long strip object is greater than the hardness of the sponge layer on the surface of the roller, and the sponge layer can be pressed to deform. The squeezing unit can have different physical structures, each with its own advantages.

[0140] like Fig. 9 The squeezing unit in the drum comprises a fixing seat 125 and a strip-shaped protrusion 126. The squeezing unit is fixed to the housing by the fixing seat. When the drum 111 rotates around its own axis, the strip-shaped protrusion 126 does not move, and the sponge layer passing through the strip-shaped protrusion is squeezed and deformed, and most of the water locked in the sponge layer is squeezed out of the sponge surface and flows downward.

[0141] The squeezing unit can be a cylindrical squeezing roller, which is fixed to the cleaning head at both ends. The surface of the squeezing roller can be smooth or have spiral protrusions.

[0142] Fig.14 FIG. 1 is a schematic diagram of the structure of an embodiment of a squeezing roller, as shown in FIG. Fig.14 As shown, the squeezing roller 121 of this embodiment includes a roller body 121a, which is cylindrical and mounted on the housing of the cleaning head through both ends. The circumferential surface of the roller body 121a has a spiral protrusion, which can be called a second spiral protrusion 121f to distinguish it from the spiral protrusion on the roller. There is one spiral protrusion on the circumferential surface of the squeezing roller, extending from one end of the squeezing roller to the other end.

[0143] Fig.15 FIG. 2 is a schematic diagram of another embodiment of the squeezing roller. Fig.14 The difference from the illustrated embodiment is that there are two second spiral protrusions 121f, which start from the same generatrix at both ends of the roller body 121a and extend toward the middle of the roller body in opposite spiral directions.

[0144] In this embodiment, a linear protrusion 121g parallel to the axial direction of the roller body 121a is provided in the middle of the two second spiral protrusions 121f in the middle of the roller body 121a, and the linear protrusion 121g can be connected to the two second spiral protrusions.

[0145] In this way, a closed side wall can be formed on the surface of the roller body 121 a at this point.

[0146] The side wall of the spiral protrusion can play a role in pushing water, helping to push the sewage squeezed out by the squeezing roller to the set sewage outlet.

[0147] Fig.14 The squeezing roller shown is equipped with a cleaning head with a sewage outlet located on the side. Fig.15 The squeeze roller shown is equipped with a cleaning head with the sewage outlet located in the middle of the squeeze roller.

[0148] Fig.16 Schematic diagram of threaded water conduction. Fig.16 The flow direction of the reclaimed water is shown by the arrow. The drum 111 rotates clockwise, and the squeezing roller 121 rotates counterclockwise. A water tank after squeezing is formed at the angle between the squeezing roller 121 and the drum. The water purification port is at the right end of the machine, and the water extraction port is at the left end of the machine. In order to make the water flow quickly, a thread is added to the squeezing roller 121. The side of the thread can play a role in pushing water, making the water flow faster, avoiding accumulation, and the water level rising and overflowing the shell.

[0149] The sewage outlet and the clean water outlet are located in the cleaning tool on opposite sides of the cleaning head. In order to speed up the flow of water, a secondary water tank is also provided next to the drum. Fig.17The schematic diagram of the secondary water tank structure is shown in FIG. The secondary water tank 1410 has a certain angle. The water inlet 1411 is slightly higher than the water outlet 1412. After the squeezing unit 120 squeezes the water out of the drum 111, the water in the drum flows along the surface of the drum into the water tank. Since the water tank has a certain inclination angle, the water flow rate in the water tank will be relatively fast, thereby improving the efficiency of washing the drum.

[0150] In addition, the arrangement of the second spiral protrusions can also be varied: for example, there are two second spiral protrusions with the same pitch, extending from the opposite side of one end of the roller body to the other end of the roller body. Fig.14 On the basis of the embodiment, a second spiral protrusion is added, and the starting points of the two second spiral protrusions are located on the opposite sides of the circumference of the roller body.

[0151] Fig.18 For Fig.14 Squeeze roller and Figure 8 Schematic diagram of the internal structure of the cleaning tool of the drum. In this embodiment, the drum 111 has a first spiral protrusion 111f, and the squeezing roller 121 has a second spiral protrusion 121f. The thrust on the water is stronger.

[0152] The extrusion unit interferes with the drum, and the squeezed water is stored between the two to form a water tank. Clean water can be sprayed on the drum surface or poured into the water tank to clean the drum surface. Fig.19 The squeezing roller 121 interferes with the roller 111, and a water tank A is formed above the interference between the two.

[0153] The location where the extrusion unit is set takes into account the location where the water tank is formed. Fig.19 In the embodiment, when the drum 111 rotates clockwise, the squeezing roller 121 is arranged at the upper right of the drum, and the water tank is formed in the right half of the drum. Fig. 20 In the embodiment, when the drum 111 rotates counterclockwise and the squeezing roller 121 is arranged at the upper left, the water tank formed will be at the left half.

[0154] The disclosure refers to the extrusion unit being stationary relative to the housing as static extrusion. The structure of static extrusion is simple, and the extrusion unit can be directly integrated with the main structure of the machine, which is more convenient in design.

[0155] The extrusion unit can be stationary or can rotate.

[0156] In one embodiment, blind holes may be provided at both ends of the roller body. The extrusion unit further comprises a bearing, a bearing mounting seat and a connecting short shaft. The bearing is fixed to the housing of the cleaning head through the bearing mounting seat; one end of the connecting short shaft is fixed in the bearing, and the other end is fixed in the blind hole.

[0157] Alternatively, connecting shafts are provided at both ends of the roller body, and the connecting shafts are fixed in the bearings.

[0158] In this way, the squeezing roller is rotatably fixed on the housing of the cleaning head.

[0159] The squeezing roller can be equipped with a power mechanism to actively squeeze water, or it can save costs by not being equipped with a power mechanism and relying on the friction of the roller to rotate.

[0160] A first motor may be fixed on the housing of the cleaning head, and the first motor is connected to the squeezing roller to drive the squeezing roller to rotate.

[0161] When the drum is also equipped with a drive motor, the drive motor and the first motor rotate in opposite directions, which is the most energy-saving. Both the drive motor and the first motor can be motors within 10W, which can achieve the cleaning of ordinary household cleaning tools without noise and environmental protection.

[0162] Of course, the driving motor and the first motor can also rotate in the same direction. The speed of the first motor and the driving motor can generally be inversely proportional to the diameter of the squeezing roller and the cylinder, so that the linear speed of the contact point of the two is the same, which saves the most power.

[0163] When the rotation speed of the first motor is greater than that of the driving motor, the squeezing effect of the squeezing roller is better than that of the above situation, but the energy consumption of the first motor is relatively increased.

[0164] When the rotation speed of the first motor is less than the rotation speed of the driving motor, the water squeezing effect of the squeezing roller is better than the case where the squeezing roller does not rotate.

[0165] Embodiments of the cleaning unit

[0166] The cleaning unit of the present disclosure may take a variety of forms.

[0167] Roller brush assembly embodiment

[0168] Fig.16 , Fig.18 , Fig.19 , Fig. 20 The cleaning unit is a roller brush assembly. As shown in the figure, the roller brush assembly 131 includes a roller brush shaft 131b and bristles 131a. The bristles 131a are arranged on the circumferential surface of the roller brush shaft 131b. Fig.16 The bristles are shown arranged in a V-shape. Fig.18 The bristles are arranged in a straight line along the generatrix. The roller brush assembly is to plant the bristles on a plastic roller brush shaft. The roller brush shaft can be made hollow or solid, depending on the specific structure. The roller brush is evenly arranged with 6-8 groups of bristles.

[0169] The roller brush shaft can be driven by a motor: the roller brush shaft 131b is connected to the third driving motor through a coupling to realize the rotation of the roller brush.

[0170] The diameter of the bristles 131a is generally 0.1mm nylon. The length of the bristles 131a is determined according to the specific structure. The bristles 131a of the roller brush assembly 131 contact the surface of the roller 111. The contact is micro, and the interference is generally between 0.5-1mm. The purpose of this is that the bristles can lightly pat the floating dust and other solid garbage on the roller brush. If the interference is too much, the damping of the roller will be increased, and the water in the sponge layer of the roller will be thrown out, and then enter the garbage box through the roller brush track, making the garbage box excessively wet.

[0171] The structural arrangement of the roller brush and the roller can be in various forms, mainly to achieve the above functions.

[0172] The roller brush assembly can be used in all types of cleaning tools mentioned in the present disclosure.

[0173] Inline brush embodiment

[0174] Fig.21 The cleaning unit shown is a straight row of brushes 132. The straight row of brushes 132 is fixed to the housing of the cleaning head. Fig.21 The working process of the cleaning tool shown is as follows: after the roller 111 crushes the garbage, the water-containing part of the wet garbage or sticky garbage on the ground is absorbed by the unsaturated sponge layer of the roller. For solid garbage, the sponge layer of the roller is deformed, wrapped, and then rolled up. After passing through the track of the shovel bar 112 and then reaching the highest point of the shovel bar, the solid garbage falls into the garbage box 141 at the bottom under the action of the rebound of the sponge layer and gravity without relative squeezing. A straight row of bristles is set at the upper end of the garbage box 141. The length of the straight row of brushes 132 is consistent with the length of the roller 111, and the bristles are evenly arranged. The function of the bristles is to sweep away the fine garbage such as fluff and floating dust adhering to the roller. Try not to let these garbage enter the sink. This structure saves space, reduces costs, and can also achieve a good cleaning effect.

[0175] The inline brush can be used in all types of cleaning tools mentioned in this disclosure.

[0176] Wiper assembly embodiment

[0177] In the case of sticky garbage, if a rolling brush or a straight brush is used to clean the drum, the sticky objects will stick to the brush, and it will be difficult to clean the machine. To this end, the present invention adopts a scraper bar and a scraper structure to scrape the sticky wet garbage on the drum into the trash can. The specific implementation scheme is as follows: Fig.23 , Figure 3 , Fig. 9 As shown, the cleaning unit is a scraper bar assembly 133 .

[0178] As combined Fig.23 , Figure 3 and Fig. 9As shown, the scraper assembly 133 includes a long scraper support 133c for fixing on the cleaning head. The scraper support 133c is provided with a friction portion 133a and a drainage portion 133b which are roughly in the shape of a "human". Fig.23 In the coordinates, the X direction is called the length direction, the Y direction is called the width direction, and the Z direction is called the height direction.

[0179] The scraper bar assembly 133 is formed by extending the scraper bar bracket in the width direction. The drainage portion 133b is located at both ends of the scraper bar bracket and extends substantially along the height direction of the scraper bar bracket.

[0180] exist Fig. 9 In the cleaning tool shown, the cleaning tool includes a roller 111 , a motor 113 a for driving the roller, a shovel bar 112 , and a garbage box 141 .

[0181] The outer layer of the drum is made of a water-absorbing sponge layer, and the inner layer is supported by hard rubber. Driving force is set at both ends or the center of the hard rubber to enable the drum to rotate.

[0182] A scraper bracket 133c is fixed above the trash box 141 and close to the drum 111. The scraper assembly 133 is in close contact with the drum 111, and the end of the friction part interferes with the drum surface by 0-0.5-1mm. The friction part 133a can peel off the floating dust and sticky garbage remaining on the drum 111 from the drum and make it fall into the trash box 141. The drainage part 133b fits with the drum 111 and pre-presses 0.5-3mm toward the center of the drum. Since the water tank for cleaning the drum is designed at the top, the function of the drainage part 133b is to seal water to prevent the water in the water tank from flowing from the two ends of the scraper to the trash box.

[0183] like Fig.23 As shown, the edge of the friction portion 133a is toothed, and the toothed shape can better separate the floating dust and sticky garbage attached to the roller from the roller.

[0184] A plurality of alignment blocks are arranged at the position of the scraper support 133c facing away from the friction part 133a and the drainage part 133b. Accordingly, a plurality of recesses are arranged on the cleaning head housing connected to the scraper support 133c. Through the cooperation of the alignment blocks and the recesses, the positions can be quickly aligned, thereby improving the assembly efficiency.

[0185] The friction part and the drainage part can be made of the same material as the scraper bracket, or can be made of different materials, and can be fixed together by bonding after being formed. The scraper bracket can be fixed on the housing of the cleaning head by gluing or secondary injection molding.

[0186] The scraper bar assembly may be used in all types of cleaning tools mentioned in the present disclosure.

[0187] exist Fig.24The cleaning tool shown also includes a dirty water tank 211 and a clean water tank 231. The clean water tank 231 is disposed at one end of the mop rod 40 close to the mop head. The clean water tank includes a long strip-shaped clean water outlet 2311, which is aligned with the surface of the cylinder 111 between the squeezing roller 121 and the scraper assembly 133.

[0188] In addition, in other embodiments, the sewage tank can be connected to the sewage outlet through a pipeline, and the sewage outlet is set at a position between the squeezing roller and the scraper on the side of the shell. The clean water tank is connected to the clean water outlet through a pipeline, and the clean water outlet is set at a position between the squeezing roller and the scraper on the other side, and the height of the clean water outlet from the ground is greater than the height of the sewage outlet from the ground. The drainage part of the scraper assembly is located exactly at the clean water outlet and the sewage outlet. In this embodiment, the height difference between the clean water outlet and the sewage outlet is utilized, and the water flow is promoted by relying on the dead weight of the water. In addition, the drainage part of the scraper assembly guides water, which can better prevent water from overflowing out of the waterway system.

[0189] Fig. 22 The cleaning unit shown is a combination of a scraper assembly and a straight brush. The scraper assembly 133 of this embodiment is a combination of Fig.23 The friction part of the scraper assembly shown replaces the straight-discharge brush 1331. The clean water outlet 2311 is arranged on the extrusion unit to form a straight-discharge clean water hole or a narrow and long clean water outlet. The sewage tank 211 is arranged in the center of the cleaning head.

[0190] In addition, there is also a wind knife cleaning method. It is suitable for cleaning dry garbage attached to the drum. Fig. 22 The scraper assembly 133 is positioned so as to be replaced with an air outlet, and the surface of the drum is blown in the reverse direction along the tangent direction, so as to clean the hair, paper scraps, etc. on the surface of the drum.

[0191] The components of the cleaning tools disclosed above can be combined according to the needs. The following are examples of several embodiments of the combined cleaning tools.

[0192] Example 1 of cleaning tool

[0193] The cleaning tool of this embodiment is unpowered and includes a one-way mechanism.

[0194] The cleaning tool of this embodiment includes a cleaning head and a hand-held part hinged to the cleaning head.

[0195] Figure 2 , Figure 3 , Figure 6The cleaning head of this embodiment is shown. As shown in the figure, the cleaning head includes a roller 111 arranged on a housing 500, a one-way mechanism arranged on at least one side of the roller, a squeezing roller 121 obliquely above the roller, a shovel bar 112 below the roller, a scraper bar assembly 133 below the squeezing roller, a garbage box 141 below the scraper bar assembly, a sewage tank 211 behind the garbage box, and a clean water tank 231 arranged on the mop rod. At least two wheels 190 are arranged at the bottom of the cleaning head.

[0196] A roller mounting hole is provided on the shell, and the roller 111 is rotatably mounted on the shell 500 through a bearing 115d and a knob 115e.

[0197] The knob 115e includes: a short shaft 115e1 for fixing the bearing 115d, and a flange 115e2 formed by radially extending from one end of the short shaft, and the flange 115e2 is used to be fixed on the housing 500. A straight protrusion 115e3 is provided on the flange to facilitate the operator to rotate the knob and take out the roller 111.

[0198] The flange can be fixed to the housing by snap-fitting or by threads.

[0199] The one-way mechanism includes a ratchet 115a fixed to one end of the drum, a stopper 115b fixed to the housing, and a spring 115c abutting between the stopper and the housing. The drum includes a hard rubber and a sponge layer covering the hard rubber. The ratchet 115a is fixed to the hard rubber of the drum 111. The stopper 115b abuts against the ratchet teeth of the ratchet 115a under the action of the spring, so that the ratchet 115a can only move in the same direction. Figure 3 Counterclockwise rotation as shown.

[0200] The cleaning tool of this embodiment is pushed forward by the operator: for dry garbage, wet garbage, sticky garbage or a mixture of the three types of garbage, it is only necessary to push the cleaning tool so that the drum passes through the ground sprinkled with garbage and the drum rotates. The clean water in the clean water tank falls on the surface of the drum by its own weight and wets the drum. The sponge on the surface of the drum wraps the dry garbage and enters the garbage box under the action of the shovel bar; the wet garbage is absorbed by the sponge layer of the drum; and the sticky garbage adheres to the surface of the drum. A small amount of dry garbage and a large amount of sticky garbage attached to the sponge layer that rotates over the upper end of the shovel bar are scraped off by the scraper bar and separated from the sponge layer; the squeezing roller squeezes out the water adsorbed in the sponge layer and rinses the surface of the sponge layer below, and the sticky garbage attached to it can be washed off and falls into the sewage tank. After squeezing, the surface of the drum is restored to cleanliness, so that it is still in a clean state when it touches the ground again.

[0201] The sponge roller contacts and rubs against the ground, which is equivalent to wiping the ground and can clean the marks on the ground.

[0202] When there is sticky garbage on the ground, the sponge roller will absorb the wet part into the sponge pores. For the slightly drier part, the roller will deform to wrap the soft garbage, and then with the cooperation of the shovel bar, it will bring the sticky garbage into the machine.

[0203] This embodiment can clean not only solid garbage, but also wet garbage and sticky garbage, and can perfectly solve the problems existing in existing cleaning tools on the market and improve cleaning efficiency.

[0204] In this embodiment, the machine is compact, does not have any motor drive device, has a low overall cost, and is more suitable for indoor use at home.

[0205] The sponge roller will not cause damage to the ground; the wet sponge roller will wrap the garbage and then roll it into the inside of the machine, which will not generate dust and cause air pollution; the garbage compacted by the sponge roller will be moistened and its volume will become smaller, so it can also be used on the ground with water stains.

[0206] Example 2 of cleaning tool

[0207] The cleaning head of the cleaning tool of this embodiment includes a power roller, and the water tank is arranged on the cleaning head. A filtering device is arranged in the water channel to prevent the water pump from being blocked.

[0208] Figure 9-18 As shown in the figure, the cleaning head is equipped with a roller 111, a strip-shaped protrusion 126, a herringbone scraper strip 133, a garbage box 141, and a water tank 210 in sequence from front to back.

[0209] Different from the embodiment 1 of the cleaning tool, the roller of this embodiment is driven by a motor 113a. One end of the motor 113a is mounted on the housing 500 through a rotating shaft 113c, the outer diameter of the motor 113a is sleeved in the roller, and the other end of the motor 113a is fixed to the hard rubber of the roller, so that the roller rotates with the outer diameter of the motor (equivalent to the output shaft of the motor). The roller of this embodiment can be a flat roller or a roller with threads, and the roller is detachably mounted on the housing through a pressing and telescopic device.

[0210] The water tank 210 of this embodiment is located at the end of the cleaning head, and the water circulation is driven by the water pump. The water tank is divided into a sewage box and a clean water box by a detachable filter box or filter screen in the middle. The clean water box is connected to the clean water outlet provided on the shell through a pipeline, and the clean water outlet guides the clean water into the cleaning area formed between the strip-shaped protrusions 126, the scraper strips 133 and the drum surface to clean the drum surface. The cleaned sewage and the sewage squeezed out by the strip-shaped protrusions 126 flow into the sewage box through the pipeline from the sewage inlet provided on the opposite side. The sewage in the water tank is filtered by the filter screen or filter box, enters the clean water tank, and is pumped to the cleaning area by the water pump again, and the cycle repeats.

[0211] One-way valves are installed at the inlet and outlet of the water tank, and ejectors are installed at the corresponding positions of the shell. When the water tank is taken out of the shell, the one-way valve is closed to prevent water from overflowing. When installed, the ejector pushes against the one-way valve to make the water path unobstructed.

[0212] The filter screen or filter box can filter out dry garbage or fine garbage that accidentally enters the water channel, prevent clogging of the water pump, and extend the service life of the cleaning head.

[0213] The strip-shaped protrusions 126 of this example can be replaced by a squeezing roller with threads, which has a stronger guiding effect on the water flow.

[0214] This embodiment uses a power-driven roller to make the operation more convenient.

[0215] In addition, the drum and water tank of this embodiment can be disassembled for easy maintenance and cleaning; a filtering device is used to keep the water channel clean and extend the service life; ozone has a disinfecting effect on cleaning tools and the ground, and the cleaning is more thorough.

[0216] Example 3 of cleaning tool

[0217] This embodiment includes a water volume regulating unit, and the cleaning tool can select the clean water to be supplied to the drum according to the cleanliness of the floor, which is more energy-efficient.

[0218] Figures 25 to 29 Schematic diagram of the structure of this embodiment. As shown in the figure, the cleaning tool includes a handheld part 500, a cleaning head 200 hinged to the handheld part, and a water volume regulating unit. The cleaning head includes a water tank 210, a water pump and a water pump motor (not shown in the figure). The water pump motor drives the water pump to extract water from the water tank 210, and provide clean water for the drum 111 in the cleaning head for washing. The water volume regulating unit includes an electrically connected potentiometer 71, an adjustment knob 72 located on the handheld part, and a battery 73 for powering the water pump motor. The adjustment knob controls the potentiometer to adjust the output voltage of the battery. The output voltage of the battery determines the output power of the water pump motor: the higher the output voltage of the battery, the greater the output power of the water pump motor, the more water the water pump delivers to the sink, the stronger the ability to clean the drum, and the more garbage that can be removed from the drum; conversely, the lower the output voltage of the battery, the smaller the output power of the water pump motor, the less water the water pump extracts to the sink, the weaker the ability to clean the drum, and the less garbage that can be removed from the drum. The water volume regulating unit also includes a switch 75 located at the top of the handheld part, and the switch is connected in series with the battery. It is convenient for the operator to switch the battery.

[0219] like Fig.26 , 27 As shown, the handheld part 500 includes a hollow rod body 51, and the potentiometer 71 is located inside the hollow rod body, so that the product is better integrated, more beautiful in appearance, and more convenient to operate.

[0220] In this embodiment, an ozone supply unit can be integrated in the mop rod, and the ozone supply unit includes an ozone generator 61, an air pump 62 and an air pipe. The air pump inputs the generated ozone into the water tank 210 through the air pipe, so that the water in the water tank contains ozone, and bacteria will not grow in the water for a period of time, preventing the water from becoming moldy; and the ozone-containing water is used to clean the drum, and the drum cleans the floor, which can achieve the effect of disinfecting and sterilizing the floor.

[0221] The cleaning tool also includes a circuit board 74, which is located inside the hollow rod body 51. The water pump motor, the ozone generator, and the air pump are connected to the circuit board, controlled by the circuit board, and driven by battery power.

[0222] For easy transportation, the handheld part includes a plurality of rod sections, which are detachably connected. Since the power line needs to pass through the hollow rod, when it is disassembled, the wire will hinder the separation of the rod. Therefore, in this embodiment, a terminal 511 is provided at the end of the plurality of rod sections, and the electric energy is transmitted from the battery to the electrical components below by means of the electrical connection of the terminal.

[0223] The air delivery pipe is connected to the lower part of the water tank 210 to ensure that ozone is input into the water.

[0224] The water tank 210 is disposed in the cleaning head housing. Fig.26 , 29 As shown, the water tank 210 includes a clean water tank 231 and a sewage tank 211 which are interconnected, and a filter is arranged between the clean water tank and the sewage tank. The water tank is divided into a sewage box and a clean water box by a detachable filter box 241 or filter screen in the middle. The clean water box is connected to a clean water outlet arranged on the housing through a pipeline.

[0225] A flip cover 2411 is provided in the middle of the water tank 210. The flip cover 2411 can be opened to take out the filter box 241 to clean the debris inside.

[0226] The filter is a detachable filter box 241 or a filter net. The washed sewage and the sewage squeezed out by the squeezing unit flow into the sewage box through the sewage inlet provided on the opposite side through the pipeline. The sewage in the water tank is filtered by the filter net or the filter box and enters the clean water tank, and is pumped to the washing area by the water pump again, and the cycle repeats.

[0227] One-way valves are installed at the inlet and outlet of the water tank, and ejectors are installed at the corresponding positions of the shell. When the water tank is taken out of the shell, the one-way valve is closed to prevent water from overflowing. When installed, the ejector pushes against the one-way valve to make the water path unobstructed.

[0228] The filter screen or filter box can filter out dry garbage or fine garbage that accidentally enters the water channel, prevent clogging of the water pump, and extend the service life of the cleaning head.

[0229] The present invention utilizes the "water-dust circulation" cleaning technology to achieve self-cleaning of the drum, and combines sweeping, mopping, washing and twisting together, which greatly facilitates the user and can achieve a very good cleaning effect.

[0230] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

[0231] Finally, it should be noted that the above is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Although the present disclosure is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A cleaning head, characterized in that: include: case; The sweeping unit comprises a roller, which is arranged at the bottom of the housing, wherein the roller comprises an inner layer of hard rubber and a sponge layer wrapped outside the hard rubber, and a spiral protrusion is arranged on the surface of the roller; A clean water supply unit, which delivers clean water to the sponge layer; The extrusion unit is arranged in parallel with the drum and is used to extrude the drum, and a water trough is formed at the angle between the extrusion unit and the drum. As the drum rotates, clean water enters the sponge layer, and dirty water overflows from the sponge layer when squeezed by the squeezing unit. The water flow and the squeezing unit together peel off the dirt attached to the surface of the sponge layer, and the spiral protrusions push the water to make the water flow faster, thereby preventing water from accumulating in the water tank.

2. The cleaning head according to claim 1, characterized in that: The sweeping unit further comprises a roller driving mechanism and a roller transmission mechanism, wherein the roller driving mechanism drives the roller to rotate through the roller transmission mechanism; Preferably, the mopping and sweeping unit further comprises a shovel bar, which is fixed on the housing and has an arc-shaped working surface, and a gap of uniform distance is formed between the arc-shaped working surface and the outer circumference of the drum; Preferably, one end of the hard rubber is hollow and is sleeved on the driving motor, and the other end of the hard rubber is fixed with a pressing and retracting device to achieve connection / separation with the shell; the sewage is guided away along the direction of the threaded protrusion; Preferably, the driving motor is connected to the hard rubber through a connecting piece to drive the hard rubber to rotate; Preferably, the push-to-telescopic device includes a button, a spring and a block. When the button is subjected to force, the spring is compressed to drive the block to move away from the position of resisting the hard rubber shaft, so that the end of the hard rubber shaft can be moved out of the roller mounting groove on the shell.

3. The cleaning head according to claim 2, characterized in that: The thread protrusion is a line extending from one end of the roller to the other end.

4. The cleaning head according to claim 3, characterized in that: The thread protrusions are two in number, with the same pitch, extending from opposite sides of one end of the roller to the other end of the roller respectively; Preferably, the number of the threaded protrusions is two, starting from the same generatrix at both ends of the drum and extending toward the middle of the drum in opposite spiral directions; Preferably, a linear protrusion parallel to the axial direction is provided in the middle position of the drum, and the linear protrusion is connected to the two threaded protrusions.

5. The cleaning head according to claim 2, characterized in that: The diameter of the roller is 15mm-700mm; Preferably, the thickness of the sponge layer is 3-15 mm; Preferably, the sponge layer is made by foaming polyvinyl alcohol; Preferably, the sponge layer has a density of 0.25-0.5 g / cm3, a water absorption rate of 0.5-1.5 g / cm3, a Shore A hardness of 40-70, and a water storage rate of 0.2-1.0 g / cm3.

6. The cleaning head according to claim 1, characterized in that: The cleaning head also includes: Dry waste collection units, including waste boxes, to collect solid waste; A cleaning unit is disposed above the entrance of the garbage box to separate and collect the solid garbage attached to the surface of the drum; Preferably, the cleaning unit comprises: The scraper assembly comprises a scraper bracket, a friction part and a drainage part; the scraper bracket is fixed at a position above the garbage box close to the drum; the friction part is formed by the scraper bracket extending in the width direction, and the end of the friction part interferes with the surface of the drum; the drainage part is located at both ends of the scraper bracket, extending along the height direction of the scraper bracket, the drainage part is in contact with the drum, and the drainage part is used to seal and guide water to prevent the squeezed water from overflowing and flowing into the garbage box; Preferably, the edge of the friction portion is tooth-shaped; Preferably, a plurality of alignment blocks are arranged at the position of the scraper support facing away from the friction part and the drainage part, and a plurality of recesses are arranged on the housing connected to the scraper support, and the alignment blocks cooperate with the recesses; Preferably, the cleaning unit further comprises: The roller brush assembly comprises a roller brush shaft and bristles, wherein the bristles are arranged on the circumferential surface of the roller brush shaft, the bristles are in contact with the surface of the roller, and the bristles sweep the floating dust and other solid waste on the surface of the roller into the waste box; Preferably, the roller brush shaft is connected to a third drive motor via a coupling, and the third drive motor drives the roller brush assembly to rotate; Preferably, the cleaning unit further comprises: A straight brush is fixed on the housing of the cleaning head and is located at the upper end of the garbage box. The straight brush includes bristles, which are in contact with the surface of the drum. As the drum rotates, the bristles sweep away fine garbage such as fluff and floating dust adhering to the drum and drop them into the garbage box. Preferably, it also includes: A sewage tank is arranged at the center of the shell to collect sewage after cleaning the drum. The water tank is provided with a sewage outlet, and the sewage tank is connected to the sewage outlet through a pipeline.

7. The cleaning head according to claim 1, characterized in that: The extrusion unit comprises: The long strip object is fixed on the shell and presses the roller.

8. The cleaning head according to claim 1, characterized in that: The extrusion unit comprises: Fixed seat; The strip-shaped protrusion is fixed on the shell through the fixing seat to press the roller.

9. The cleaning head according to claim 1, characterized in that: The extrusion unit comprises: The squeezing roller is fixed on the cleaning head at both ends to squeeze the cylinder.

10. A cleaning tool, characterized in that: include: Handheld part; The cleaning head according to any one of claims 6 to 9, being hinged to the handheld portion; A clean water supply unit, including a clean water tank, is arranged at one end of the handheld portion close to the cleaning head to provide clean water to flush the surface of the drum; Preferably, the clean water tank comprises a long strip-shaped clean water outlet, and the clean water outlet is aligned with the surface of the drum between the squeezing roller and the scraper assembly; Preferably, the water tank is further provided with a clean water inlet, the clean water inlet is higher than the sewage inlet, and the clean water tank is connected to the clean water inlet through a pipeline; Preferably, a detachable filter box / filter screen is provided in the middle of the sewage tank, which is divided into a sewage box and a clean water box. The clean water box is connected to the clean water outlet through a pipeline, and the clean water outlet guides the clean water into the water tank to clean the surface of the drum; Preferably, it also includes: The water pump extracts the water in the sewage tank and filters it to the clean water tank. The water in the clean water tank flows to the surface of the drum. The sewage after washing the surface of the drum flows to the sewage tank, forming a water cycle.

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