Scraper assembly and cleaning head

Abstract

The present disclosure relates to a scraper bar assembly and a cleaning head, the scraper bar assembly comprising: a strip-shaped scraper bar bracket; a friction portion formed by the scraper bar bracket extending in the width direction; a drainage portion located at both ends of the scraper bar bracket, extending along the height direction of the scraper bar bracket, and used to guide the water flow. The cleaning head and the cleaning tool comprise a shell, on which the scraper bar assembly and the drum are fixed. The scraper bar assembly disclosed in the present disclosure can effectively clean the garbage attached to the surface of the drum, separate dry and wet garbage, expand the application range of the cleaning tool, and improve the anti-overflow function of the cleaning head, so that the water storage capacity of the water tank can be increased, the drum can be cleaned more thoroughly, and the floor can be cleaned more thoroughly. The cleaning head can handle sticky garbage and prevent overflow.

Description

[0001] This application is a divisional application of Chinese patent application No. 202010075241.8, and the invention name is “Scraper bar assembly and cleaning head and cleaning tool including the scraper bar assembly”, the contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure generally relates to a scraper bar assembly and a cleaning head including the scraper bar assembly, and in particular to a cleaning head for cleaning dry garbage, wet garbage, and mixed garbage including sticky wet 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] However, after the garbage comes into contact with the drum, it is easy to adhere to the surface of the drum, causing the dry garbage to be brought into the sewage collection box. Mixed garbage including dry garbage, wet garbage and sticky garbage such as soup (syrup, ketchup, etc.) cannot be cleaned and collected.

[0006] 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

[0007] In view of at least one of the defects in the prior art, the present disclosure provides a scraper bar assembly and a cleaning head including the scraper bar assembly, which can separate dry and wet garbage and process sticky garbage.

[0008] In a first aspect, the present disclosure provides a scraper bar assembly, which is installed in a housing of a cleaning head, wherein a roller capable of rolling and wiping the floor is installed at the front end of the housing, and the scraper bar assembly comprises:

[0009] The scraper support is in the shape of a long strip and is close to the drum;

[0010] A friction portion is formed by extending the scraper support in the width direction, and the end of the friction portion interferes with the surface of the drum;

[0011] The drainage part is located at both ends of the scraper bracket, extends along the height direction of the scraper bracket, and is placed on the drum to guide the water flow;

[0012] The scraper bar assembly can scrape the sticky wet garbage on the drum surface through the friction part and guide the water flow away through the drainage part.

[0013] According to one aspect of the present disclosure, the cleaning head further comprises:

[0014] The squeezing roller is arranged side by side with the drum, and forms a squeezed water trough at the angle between the roller and the drum. The drainage part prevents the water in the water trough from flowing out of the water trough from both ends of the scraper bracket.

[0015] According to one aspect of the present disclosure, an edge of the friction portion is tooth-shaped.

[0016] According to one aspect of the present disclosure, the scraper strip bracket is provided with a plurality of alignment blocks facing away from the friction portion and the drainage portion, and a plurality of recesses are provided on the shell connected to the scraper strip bracket, and the alignment blocks cooperate with the recesses.

[0017] According to one aspect of the present disclosure, the friction portion, the drainage portion, and the scraper bracket are made of different materials.

[0018] According to one aspect of the present disclosure, the friction portion, the drainage portion, and the scraper bracket are fixed together by bonding or the like after they are each formed.

[0019] According to one aspect of the present disclosure, the scraper strip bracket can be fixed to the housing of the cleaning head by gluing or secondary injection molding.

[0020] According to one aspect of the present disclosure, the end of the friction part interferes with the roller surface by 0-0.5 mm, and the Shore hardness of the friction part is 40-80.

[0021] According to one aspect of the present disclosure, the friction part is made of silicone.

[0022] According to one aspect of the present disclosure, the drainage portion interferes with the roller by 0.5-3 mm, and the Shore hardness of the drainage portion is 70-90.

[0023] According to one aspect of the present disclosure, the drainage portion is made of soft glue or hard material.

[0024] According to one aspect of the present disclosure, elastic components are provided at both ends of the scraper strip bracket, and the drainage portion is fixed to the two ends of the scraper strip bracket through the elastic components.

[0025] According to one aspect of the present disclosure, the elastic component includes a spring, a torsion spring, a spring sheet or soft glue.

[0026] In a second aspect, the present disclosure also relates to a cleaning head, comprising:

[0027] case;

[0028] A roller, mounted at the front end of the housing, capable of rolling and wiping the floor;

[0029] A wiper strip assembly as described in the first aspect.

[0030] According to one aspect of the present disclosure, the cleaning head further comprises:

[0031] The squeezing roller is arranged side by side with the drum, and the scraper bar assembly is arranged below the squeezing roller.

[0032] According to one aspect of the present disclosure, the axial center distance between the roller and the squeezing roller is smaller than the sum of the radius of the roller and the radius of the squeezing roller.

[0033] According to one aspect of the present disclosure, the cleaning head further comprises:

[0034] The clean water tank is arranged above the drum and comprises clean water outlets arranged in a long strip shape. The clean water outlets are aligned with the surface of the drum between the squeezing roller and the scraping strip.

[0035] According to one aspect of the present disclosure, the cleaning head further comprises:

[0036] A trash box is arranged in the shell and below the scraper bracket, and the drainage portion prevents water in the water tank from flowing from both ends of the scraper bracket into the trash box.

[0037] According to one aspect of the present disclosure, the cleaning head further comprises:

[0038] A sewage tank is connected to a sewage outlet through a pipeline, and the sewage outlet is arranged at a position between the squeezing roller and the scraper assembly on the side of the shell.

[0039] According to one aspect of the present disclosure, the clean water tank is connected to the clean water outlet through a pipeline, and the clean water outlet is arranged on the other side near a position between the squeezing roller and the scraper assembly, and the height of the clean water outlet from the ground is greater than the height of the sewage outlet from the ground.

[0040] The solutions of various embodiments of the present disclosure are applied to cleaning tools. The cleaning tools use the "water-dust circulation" cleaning technology to clean the sticky wet garbage that is the most difficult to clean with existing cleaning tools and separate it from the dry garbage.

[0041] The scraper bar assembly disclosed in the present invention can effectively clean the garbage attached to the surface of the drum, separate dry and wet garbage, expand the application range of the cleaning tool, and improve the anti-overflow function of the cleaning head, so that the water storage capacity of the water tank can be increased, the drum can be cleaned more thoroughly, and the floor can be cleaned more thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] 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:

[0043] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the cleaning tool disclosed in the present invention;

[0044] Figure 2 for Figure 1 Exploded view of the cleaning head;

[0045] Figure 3 for Figure 1 Schematic diagram of the internal structure of the cleaning head;

[0046] Figure 4 for Figure 1 Schematic diagram of the cleaning head cross section;

[0047] Figure 5 for Figure 1 Schematic diagram of the bottom surface of the cleaning head;

[0048] Figure 6 for Figure 1 Schematic diagram of the cleaning head from the side;

[0049] Figure 7 A schematic diagram for forming the water squeezing zone;

[0050] Figure 8 This is a schematic diagram of the drum structure of an embodiment of the present disclosure;

[0051] Fig. 9 is a cross-sectional view of a cleaning tool with the above-mentioned roller;

[0052] Fig.10 for Fig. 9 Schematic diagram of the side appearance;

[0053] Fig.11 A perspective schematic diagram of an embodiment of a roller;

[0054] Fig.12 This is a schematic diagram of the drum being disassembled;

[0055] Fig.13 for Fig.12 Schematic diagram from another perspective;

[0056] Fig.14It is a schematic structural diagram of an embodiment of a squeezing roller;

[0057] Fig.15 It is a schematic structural diagram of another embodiment of the squeezing roller;

[0058] Fig.16 A schematic diagram of threaded water guide in one embodiment;

[0059] Fig.17 It is a schematic diagram of the secondary water tank structure;

[0060] Fig.18 For Fig.14 Squeeze roller and Figure 8 A schematic diagram of the internal structure of the cleaning tool of the drum;

[0061] Fig.19 A schematic diagram of a water tank formed by the interference between the squeezing roller and the drum in one embodiment;

[0062] Fig. 20 A schematic diagram of a water tank formed by the interference between the squeezing roller and the drum in another embodiment;

[0063] Fig.21 The schematic diagram of the structure of the cleaning unit is a straight brush;

[0064] Fig. 22 The schematic diagram of the structure of the cleaning unit is a combination of a scraper bar assembly and a straight brush;

[0065] Fig.23 A schematic diagram of the structure of a scraper strip according to an embodiment;

[0066] Fig.24 It is a structural schematic diagram of an embodiment including a sewage tank and a clean water tank;

[0067] Fig.25 It is a schematic diagram of the structure of a cleaning tool with a power-assisting system;

[0068] Fig.26 for Fig.25 A schematic cross-sectional view of a cleaning head;

[0069] Fig. 27 An exploded view with handles to assist in identifying the structure;

[0070] Fig.28 It is a schematic diagram of the rotation state of the power-assisted wheel;

[0071] Fig.29 This is an exploded view of the power-assisted wheel structure. DETAILED DESCRIPTION

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] Wet garbage refers to liquid garbage, such as water, beverages, etc.

[0081] Sticky wet garbage includes soups, stews, porridge, ketchup, chocolate sauce and other semi-solid garbage with a certain viscosity.

[0082] Other garbage such as dust, ground marks, etc. are also cleaning objects disclosed in the present invention.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] The roller 111 includes an inner hard rubber shaft and a sponge layer wrapped outside the hard rubber shaft. The end of the hard rubber shaft can be fixed to the housing 500 through a bearing or other connecting piece. The roller driving mechanism 113 drives the hard rubber shaft 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.

[0088] 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.

[0089] 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.

[0090] Figure 7 It is a schematic diagram of the formation of the water squeeze zone. Figure 7As 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.

[0091] 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.

[0092] When the roller rolls over the sticky wet garbage on the ground, the semi-solid garbage adheres to the surface of the sponge layer 111b. The clean water provided by the clean water supply unit 160 washes away the garbage layer attached to the surface of the sponge layer 111b.

[0093] 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 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.

[0094] 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.

[0095] The cleaning tool of the present disclosure further includes a water circulation module 200, 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 in 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.

[0096] The beneficial effects of the present disclosure are:

[0097] 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.

[0098] The outer sponge and the shovel bar cooperate with each other to completely collect solid waste;

[0099] 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;

[0100] 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.

[0101] 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;

[0102] The clean water supply unit and the squeezing unit work together to keep the roller in contact with the ground always clean;

[0103] Therefore, the present invention can clean sticky wet 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.

[0104] 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.

[0105] Embodiment of the drum

[0106] 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 shaft 111c located at the axis center and a sponge layer 111b wrapped and fixed on the circumferential surface of the hard rubber shaft.

[0107] 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.

[0108] The roller of this embodiment has only one sponge layer, and the sponge layer 111b is made of polyvinylalcohol (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:

[0109] 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, wrapping the garbage particles, and when turning past the restriction of the shovel bar, it can use its own elasticity to eject most of the garbage particles, detaching them from the sponge layer and dropping them into the dry garbage collection unit, without missing anything. Moreover, when dealing with accumulated water on the ground, the sponge can absorb more water, leaving less water on the mopped bottom surface.

[0110] 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.

[0111] 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.

[0112] The diameter of the roller disclosed in the present invention can be as small as 15 mm or as large as 700 mm.

[0113] For example, a 3mm thick sponge layer is attached to the outside of a solid hard rubber shaft 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.

[0114] The drum with a diameter of 700mm is generally used outdoors or in places where there are large dry garbage particles.

[0115] On the surface of the drum, a spiral protrusion may be provided, which may be referred to as a first spiral protrusion 111f. Figure 8As 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.

[0116] 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 shaft includes a connecting shaft, and the other end is a hollow cylinder.

[0117] 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. One hollow end of the hard rubber shaft 111c is sleeved on the motor, and this end abuts against the driving motor 113a. The other end of the hard rubber shaft is fixed to a push-telescopic device on the cleaning head. The push-telescopic device 113f includes parts such as a button, a spring, and a block. When the button is stressed, the compression spring drives the block to move away from the position that abuts against the hard rubber shaft. At this time, the end of the hard rubber shaft 111c can be moved out of the roller mounting slot on the cleaning head housing, 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.

[0118] 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.

[0119] The spiral protrusion on the drum can guide the sewage squeezed out of the extrusion unit to a designated location along the thread direction, such as the suction nozzle of a sewage pipe, so as to prevent the sewage from overflowing and causing secondary pollution of the bottom surface.

[0120] Embodiment of the extrusion unit

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] In this way, a closed side wall can be formed on the surface of the roller body 121 a at this point.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.17 The 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] The extrusion unit can be stationary or can rotate.

[0138] 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.

[0139] Alternatively, connecting shafts are provided at both ends of the roller body, and the connecting shafts are fixed in the bearings.

[0140] In this way, the squeezing roller is rotatably fixed on the housing of the cleaning head.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] Embodiments of the cleaning unit

[0148] The cleaning unit of the present disclosure may take a variety of forms.

[0149] Roller brush assembly embodiment

[0150] 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.

[0151] The roller brush 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.

[0152] 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.

[0153] The structural arrangement of the roller brush and the roller can be in various forms, mainly to achieve the above functions.

[0154] The roller brush assembly can be used in all types of cleaning tools mentioned in the present disclosure.

[0155] Inline brush embodiment

[0156] 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.21The 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.

[0157] The inline brush can be used in all types of cleaning tools mentioned in this disclosure.

[0158] Wiper assembly embodiment

[0159] 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 .

[0160] As combined Fig.23 , Figure 3 and Fig. 9 As 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.

[0161] 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.

[0162] 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 .

[0163] The outer layer of the drum is composed of a water-absorbing sponge layer, and the inner layer is supported by a hard rubber shaft. Driving forces are arranged at both ends or in the center of the hard rubber shaft to enable the drum to rotate.

[0164] A scraper support 133c is fixed above the trash box 141 close to the drum 111. The friction part and the drainage part can be made of silicone with a Shore A hardness of 40-80, so that the scraper assembly 133 can be in close contact with the drum 111, and the end of the friction part interferes with the drum surface by 0-0.5mm. 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 is placed on the drum 111, and the two overlap by 0.5-3mm. 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.

[0165] The material of the drainage part is not limited to the above-mentioned soft rubber, but can also be made of hard material. In order to achieve the function of guiding the water flow by overlapping the above-mentioned soft rubber and the roller, the drainage part can be made of a material with a Shore hardness of 70-90, such as ABS, PC, PP or other hard rubber materials, and can even be made of thin metal sheets, and the drainage part is fixed to the two ends of the scraper bracket by elastic components. The elastic component can include a spring, a torsion spring, a spring sheet or soft rubber, so that a flexible connection is achieved between the drainage part of the hard material and the roller.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] The scraper bar assembly may be used in all types of cleaning tools mentioned in the present disclosure.

[0170] exist Fig.24 The 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.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] 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.

[0175] Example 1 of cleaning tool

[0176] The cleaning tool of this embodiment is unpowered and includes a one-way mechanism.

[0177] The cleaning tool of this embodiment includes a cleaning head and a hand-held part hinged to the cleaning head.

[0178] Figure 2 , Figure 3 , Figure 6 The 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.

[0179] 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.

[0180] 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.

[0181] The flange can be fixed to the housing by snap-fitting or by threads.

[0182] 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 shaft and a sponge layer covering the hard rubber shaft. The ratchet 115a is fixed to the hard rubber shaft 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.

[0183] 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.

[0184] The sponge roller contacts and rubs against the ground, which is equivalent to wiping the ground and can clean the marks on the ground.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] Example 2 of cleaning tool

[0190] 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.

[0191] 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.

[0192] 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 shaft 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] In this embodiment, an ozone generator can be integrated into the mop rod to introduce the generated ozone into the water tank, so that the water in the sink contains ozone, and bacteria will not grow in the water for a period of time, thereby preventing the water from becoming moldy; and, the drum is cleaned with ozone-containing water, and the drum cleans the floor, which can have the effect of disinfecting and sterilizing the floor.

[0197] 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.

[0198] This embodiment uses a power-driven roller to make the operation more convenient.

[0199] 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.

[0200] 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.

[0201] 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.

[0202] 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 scraper assembly, installed in the housing of a cleaning head, wherein a roller capable of rolling and wiping the floor is installed at the front end of the housing, characterized in that: The scraper strip assembly comprises: The scraper support is in the shape of a long strip and is close to the drum; A friction portion is formed by extending the scraper support in the width direction, and the end of the friction portion interferes with the surface of the drum; The drainage part is located at both ends of the scraper bracket, extends along the height direction of the scraper bracket, and is placed on the drum to guide the water flow; The scraper bar assembly can scrape the sticky wet garbage on the drum surface through the friction part and guide the water flow away through the drainage part.

2. The wiper strip assembly according to claim 1, characterized in that: The cleaning head also includes: A squeezing roller is arranged side by side with the drum, and forms a squeezed water trough at an angle with the drum, wherein the drainage portion prevents water in the water trough from flowing out of the water trough from both ends of the scraper bracket; Preferably, the edge of the friction portion is tooth-shaped; Preferably, the scraper support is provided with a plurality of alignment blocks facing away from the friction part and the drainage part, and a plurality of recesses are provided on the housing connected to the scraper support, and the alignment blocks cooperate with the recesses; Preferably, the friction part, the drainage part and the scraper bracket are made of different materials; Preferably, the friction part, the drainage part, and the scraper bracket are fixed together by bonding or the like after they are formed; Preferably, the scraper strip support can be fixed on the housing of the cleaning head by gluing or secondary injection molding.

3. The wiper strip assembly according to claim 1, characterized in that: The end of the friction part interferes with the roller surface by 0-0.5 mm, and the Shore hardness of the friction part is 40-80; Preferably, the friction part is made of silicone.

4. The wiper strip assembly according to claim 1, characterized in that: The drainage part interferes with the roller by 0.5-3 mm, and the Shore hardness of the drainage part is 70-90; Preferably, the drainage portion is made of soft glue or hard material.

5. The wiper strip assembly according to claim 1, characterized in that: Elastic components are provided at both ends of the scraper bracket, and the drainage portion is fixed to the two ends of the scraper bracket through the elastic components; Preferably, the elastic component includes a spring, a torsion spring, a spring sheet or soft rubber.

6. A cleaning head, characterized in that: include: case; A roller, mounted at the front end of the housing, capable of rolling and wiping the floor; A scraper strip assembly as claimed in any one of claims 1 to 5.

7. The cleaning head according to claim 6, characterized in that: Also includes: A squeezing roller is arranged side by side with the drum, and the scraper assembly is arranged below the squeezing roller; Preferably, the axial center distance between the roller and the squeezing roller is smaller than the sum of the radius of the roller and the radius of the squeezing roller.

8. The cleaning head according to claim 7, characterized in that: Also includes: The clean water tank is arranged above the drum and comprises clean water outlets arranged in a long strip shape. The clean water outlets are aligned with the surface of the drum between the squeezing roller and the scraping strip.

9. The cleaning head according to claim 6, characterized in that: Also includes: A trash box is arranged in the shell and below the scraper bracket, and the drainage portion prevents water in the water tank from flowing from both ends of the scraper bracket into the trash box.

10. The cleaning head according to claim 8, characterized in that: Also includes: A sewage tank connected to a sewage outlet through a pipeline, wherein the sewage outlet is arranged on the side of the shell body near a position between the squeezing roller and the scraper assembly; Preferably, the clean water tank is connected to a clean water outlet via a pipeline, and the clean water outlet is arranged on the other side near a position between the squeezing roller and the scraper assembly, and the height of the clean water outlet from the ground is greater than the height of the sewage outlet from the ground.

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