WO2022166798A1

WO2022166798A1 - Surface cleaning head and surface cleaning device

Info

Publication number: WO2022166798A1
Application number: PCT/CN2022/074502
Authority: WO
Inventors: 黄余元
Original assignee: 苏州瑞久智能科技有限公司
Priority date: 2021-02-05
Filing date: 2022-01-28
Publication date: 2022-08-11
Also published as: EP4285801A4; US20240081597A1; EP4285801A1

Abstract

A surface cleaning device (100) and a surface cleaning head (1). The surface cleaning head (1) comprises: a housing (11); a brush cavity (12), located at the front portion (111) of the housing (11) and having a lower opening (121) and a side opening (122); and a brush assembly (13), detachably mounted in the brush cavity (12) and comprising a connecting wall (131), a cleaning roller (132) and edge brushes (133), wherein the cleaning roller (132) is configured to be driven by a driving device to rotate around a transverse axis (X1), and the side brush (133) is mechanically coupled to the cleaning roller (132) in a mode of rotating around the transverse axis (X1) along with the cleaning roller (132).

Description

Surface cleaning head and surface cleaning device

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to the following Chinese patent applications:

Submitted to the State Intellectual Property Office of China on February 5, 2021, the application number is 202110162832.3, the name of the invention is "surface cleaning head and surface cleaning device",

Submitted to the State Intellectual Property Office of China on February 5, 2021, the application number is 202110161044.2, the name of the invention is "cleaning head for surface cleaning device",

Submitted to the State Intellectual Property Office of China on February 05, 2021, the application number is 202110162831.9, and the name of the invention is "cleaning brush assembly and cleaning head for surface cleaning device",

Submitted to the State Intellectual Property Office of China on June 30, 2021, the application number is 202110740007.7, the name of the invention is "surface cleaning device",

Submitted to the State Intellectual Property Office of China on June 30, 2021, the application number is 202110740700.4, the name of the invention is "surface cleaning equipment",

Submitted to the State Intellectual Property Office of China on June 30, 2021, the application number is 202110743377.6, the name of the invention is "surface cleaning machine",

Submitted to the State Intellectual Property Office of China on June 30, 2021, the application number is 202110740073.4, the name of the invention is "floor cleaning device", and

Submitted to the State Intellectual Property Office of China on November 17, 2021, the application number is 202111361556.X, the name of the invention is "surface cleaning device",

The entire contents of the above patent applications are incorporated herein by reference.

technical field

The present application relates to the field of surface cleaning, and in particular, to a surface cleaning head and a surface cleaning device.

Background technique

Surface cleaning equipment, such as floor scrubbers, typically utilize a surface cleaning head with a cleaning roller to scrub the surface to be cleaned. In the above equipment, since the cleaning roller is usually surrounded by the casing, it cannot touch the wall or the edge surface where the wall and the ground meet, so the edge surface cannot be brushed; therefore, the operator has to Secondary cleaning of such edge surfaces is time-consuming and labor-intensive.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present application provides a surface cleaning head and a surface cleaning device.

In a first aspect, embodiments of the present application provide a surface cleaning device that can be used to clean surfaces such as floors. The device includes: a surface cleaning head that can move along the surface to be cleaned, a cleaning liquid delivery system containing a cleaning liquid tank, and a dirty liquid recovery system containing a suction source and a dirty liquid recovery tank, characterized in that the surface cleaning head comprising: a housing; a suction channel located within said housing; a brush cavity located at the front of said housing and having a lower opening facing said surface to be cleaned and a side opening laterally outward, said a brush cavity in fluid communication with the suction channel; and a brush assembly detachably mounted in the brush cavity and comprising a connecting wall, a cleaning roller and a side brush, the connecting wall being detachably connected to the brush cavity on the casing and covering at least part of the side opening, the connecting wall has opposite outer and inner sidewall surfaces, one end of the cleaning roller is mounted on the inner sidewall surface of the connecting wall, the The side brush is installed at the outer side wall of the connecting wall, the cleaning roller is configured to be driven by a driving device to rotate around a transverse axis, and the side brush is to follow the cleaning roller. The transverse axis rotates to be mechanically coupled to the cleaning roller. Therefore, when the operator using the device moves the surface cleaning head on the surface to be cleaned, the edge surface (such as the floor area near the wall) can be brushed with the help of the side brush; and since the side brush is driven by the cleaning roller to rotate at the same time, It does not require additional driving components, and the structure of the surface cleaning head can be kept simple.

In a possible implementation manner, the brush assembly may further include: a retaining ring, the retaining ring is mounted on the outer side wall of the connecting wall and surrounds the upper outer side of the side brush, the The retaining ring at least partially protrudes laterally from the outer side wall surface of the connecting wall. Optionally, the retaining ring is at least partially formed of a flexible material.

In a possible implementation, the side brush includes a brush holder and several cleaning elements located on the brush holder. Optionally, at least part of the cleaning elements are distributed along a circumference around the transverse axis.

Wherein, optionally, an outer side wall of the connecting wall has a concave portion, the concave portion intersects with the lower opening, and the concave portion is configured to receive the side brush.

Wherein, optionally, the front part of the connecting wall has a front notch located directly in front of the recessed part and connected to the recessed part, and part of the cleaning elements are exposed to the outside through the front notch .

Wherein, optionally, the lower part of the connecting wall has a lower notch, and some of the cleaning elements are inclined toward the inner direction and pass through the lower notch.

Wherein, optionally, the several cleaning elements include bristle tufts.

Wherein, optionally, both the cleaning roller and the side brush can be removed from the connecting wall.

Wherein, optionally, the side brush is configured to be individually removable from the connecting wall when the brush assembly is assembled in the brush cavity.

Wherein, optionally, the brush holder has a surface facing outward, the transverse axis line runs through the surface, and the plurality of cleaning elements are at least partially arranged on the surface.

In a possible implementation manner, the several cleaning elements include at least one of wiping pad material, fluff tufts, sponge blocks, and short scrapers.

Wherein, optionally, the plurality of cleaning elements are configured to be integrally detachable from the surface of the brush holder.

In a possible implementation manner, at least part of the cleaning elements protrudes laterally from the outer sidewall surface of the connecting wall.

In a possible implementation manner, the surface cleaning head includes: an upper cover, the upper cover is detachably arranged on the top of the housing, and the brush assembly is configured to be on the upper cover The cover cannot be removed from the brush cavity until it is removed from the housing.

Wherein, optionally, the connecting wall has an upper end surface, and the upper cover is configured to abut the upper end surface when the upper cover is installed on the top of the casing.

Wherein, optionally, the surface cleaning head includes: a water blocking strip, the water blocking strip is arranged at the inner wall surface of the upper cover and when the upper cover is installed on the top of the housing contact the cleaning roller.

In a possible implementation manner, a part of the outer side wall surface of the connecting wall constitutes a part of the side outer contour surface of the surface cleaning head.

In a possible implementation manner, the surface cleaning head includes: a lower wiper strip located at the bottom of the housing, the lower wiper strip is used to define at least part of the rear side edge of the lower opening and is configured to contact the surface to be cleaned; and an upper blade configured to abut the cleaning roller to remove excess liquid from the cleaning roller wetted with liquid.

In a possible implementation manner, the cleaning liquid delivery system further includes: a first liquid spray nozzle assigned to the cleaning roller and a second liquid spray nozzle assigned to the side brush. Both the liquid spray nozzle and the second liquid spray nozzle are in fluid communication with the cleaning liquid tank.

In a possible implementation manner, the surface cleaning device is a vertical device and further includes: a vertical body, the vertical body includes an upright portion and a handle portion connected to the upright portion, so The lower end of the upright portion is rotatably connected to the surface cleaning head, and the cleaning liquid tank, the dirty liquid recovery tank and the suction motor are all arranged on the upright portion.

In a possible implementation manner, the surface cleaning device is a self-moving robot.

In a second aspect, embodiments of the present application provide a surface cleaning head. The surface cleaning head can be applied to equipment for cleaning surfaces such as floors. The surface cleaning head includes: a pair of side portions disposed opposite left and right; a driving device; and at least one side brush disposed at at least one of the side portions and configured to be capable of being driven by the The driving device drives to rotate around a transverse axis line, the transverse axis line transversely runs through the pair of side portions, and at least part of each of the side brushes is exposed from the corresponding side portion.

In a possible implementation manner, the surface cleaning head further includes: a cleaning roller, the cleaning roller is located between the pair of side parts, and each of the side brushes is located on the left side of the cleaning roller Alternatively, said cleaning roller is configured to be rotatable about said transverse axis by said driving means.

Wherein, optionally, one of the side parts includes a first side wall and a connecting wall located on the front side of the first side wall and can be separated from the first side wall, and the connecting wall has an inner side On the wall surface and the outer side wall surface, one of the side brushes is installed on the outer side wall surface, and one end of the cleaning roller is supported on the inner side wall surface.

Wherein, optionally, the connecting wall, the cleaning roller and the side brush mounted on the connecting wall constitute at least a part of a brush assembly that can be removed from the surface cleaning head.

Wherein, optionally, the surface cleaning head includes: a housing, the first side wall and the second side wall are defined by the housing; a brush cavity is located at the front of the housing and has The lower opening facing the surface to be cleaned and the side opening laterally outward, the brush assembly is detachably installed in the brush cavity, and the connecting wall is detachably connected to the housing on the body and covering at least part of the side opening.

Wherein, optionally, the surface cleaning head includes: a suction channel located in the housing, and the suction channel is in fluid communication with the brush cavity.

Wherein, optionally, the brush assembly further includes a retaining ring, the retaining ring is mounted on the outer side wall of the connecting wall and surrounds the upper outer side of the side brush, and the retaining ring at least has Part of the lateral side protrudes from the outer side wall surface of the connecting wall.

Wherein, optionally, the brush assembly further includes a connecting head disposed on the connecting wall, and the connecting head includes a bearing fixedly disposed on the connecting wall and a shaft rotatably supported on the bearing One end of the shaft is connected with one end of the cleaning roller, and the other end is connected with the side brush.

In a possible implementation manner, the surface cleaning head further comprises: at least one disk brush, the at least one disk brush is located at the bottom of the surface cleaning head and between the pair of side portions, Each of the disc brushes is configured to be rotatable about a longitudinal axis.

Wherein, optionally, the at least one disk brush is configured to be driven and rotated by the driving device at the same time.

Wherein, optionally, the surface cleaning head further comprises: a suction nozzle, and the suction nozzle is arranged at the bottom of the surface cleaning head and is located on the front side of the at least one disk brush.

In a possible implementation manner, the surface cleaning head includes a pair of the side brushes, and the pair of side brushes are respectively arranged at the pair of side portions.

In the embodiment of the present application, when the operator moves the cleaning head on the surface to be cleaned, the edge surface (such as the floor area near the wall) can be brushed at the same time with the help of the side brush, which does not require the operator to clean twice, saving time and effort .

Additional aspects and other advantages of the present application will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The present application will now be described with reference to the accompanying drawings, in which:

1 is a perspective view of a surface cleaning device according to an embodiment provided by the present application;

2 is a perspective view of a surface cleaning head of the surface cleaning device of FIG. 1;

Figure 3 is a bottom view of the surface cleaning head of the surface cleaning device of Figure 1;

Figure 4 is an exploded view of the surface cleaning head of the surface cleaning device of Figure 1;

5 is a cross-sectional view of the surface cleaning head of FIG. 2 in the direction A-A;

FIG. 6 is a feature diagram of the interior of the housing of the surface cleaning head of FIG. 3 from a bottom viewing angle;

Figure 7 is an exploded view of the brush assembly of the surface cleaning head of Figure 3;

Figure 8 is a perspective view of the connecting wall of Figure 7;

Figure 9a is a perspective view of a side brush according to an embodiment provided by the present application;

Figure 9b is a perspective view of a side brush according to another embodiment provided by the present application;

Figure 9c is a perspective view of a side brush according to yet another embodiment provided by the present application;

Figure 10 is an enlarged view of Figure 3 at B;

Fig. 11 is a surface cleaning head according to an embodiment provided by the present application, an indication diagram of selecting any side brush to be assembled in the recess;

Figure 12 is a perspective view of a surface cleaning head with a brush assembly mounted at the brush cavity and an upper cover removed, according to one embodiment provided herein;

Figure 13 is an enlarged view of Figure 12 at C;

Figure 14 is a schematic view of the surface cleaning head of Figure 2 as it moves over the surface to be cleaned;

15 is a top view of a surface cleaning head according to another embodiment provided by the present application;

FIG. 16 is a top view of the surface cleaning head of FIG. 15 after removing the upper cover;

Figure 17 is a schematic view of the surface cleaning head of Figure 15 after removing the upper cover, and then removing one end of the brush assembly from the housing;

Figure 18 is a perspective view of the surface cleaning head of Figure 17 with the brush assembly completely removed;

Figure 19 is a cross-sectional view of the surface cleaning head of Figure 15 in the D-D direction;

Figure 20 is a top view of the brush assembly of Figure 18;

Figure 21 is a top cross-sectional view of the brush assembly of Figure 20;

Fig. 22 is a partial cross-sectional view of the surface cleaning head of Fig. 16, taken in transverse cross-section at the portion where the brush assembly and the motor inside the housing are located after the upper cover is removed;

Figure 23 is a bottom view of the upper cover of Figure 16;

Figure 24 is a schematic view of the surface cleaning head of Figure 15 as it moves over the surface to be cleaned;

25 is a schematic bottom view of a surface cleaning head according to yet another embodiment provided by the present application;

Figure 26 is a schematic diagram of the transmission relationship between the side brush, the main brush and the motor in the surface cleaning head of Figure 25;

Figure 27 is a schematic view of the surface cleaning head of Figure 25 as it moves over the surface to be cleaned.

Among them: 100. Surface cleaning device;

1. Surface cleaning head;

2. Vertical body; 21. Upright part; 211. Upright casing; 212. Lower connecting end; 22. Handle part; 221. Handle;

222, operation panel; 223, rod body; 23, human-computer interaction panel; 24, rechargeable battery; 25, cleaning liquid tank; 26, sewage recovery tank; 27, suction motor;

11, housing; 111, front; 112, rear; 113, first side wall; 114, second side wall;

12, brush cavity; 121, lower opening; 122, side opening; 123, top opening;

13, brush assembly; 131, connecting wall; 132, cleaning roller; 133, side brush; 134, retaining ring; 135, connecting head;

1311, inner side wall surface; 1312, outer side wall surface; 1313, recessed part; 1314, front notch;

1315, locking mechanism; 1316, convex part; 1317, upper end surface; 1318, lower notch; 1319, front side surface;

1321, cylindrical brush body; 1322, cleaning element; 1323, end; 1324, end;

1331, brush holder; 1332, cleaning element; 833, side brush; 8331, brush holder; 8332, cleaning element; 933, side brush;

9331, brush holder; 9332, cleaning element;

14, upper cover; 141, opening; 142, water retaining strip;

15, suction channel; 16, moving wheel; 17, rotary joint; 181, first liquid spray nozzle; 182, second liquid spray nozzle; 183, liquid pump; 191, lower scraper; 192, upper scraper; 110 ,motor;

5. Surface cleaning head; 51, housing; 52, brush cavity; 53, brush assembly; 54, upper cover; 55, suction channel; 56, moving wheel; 57, rotary joint; 58, liquid spray nozzle;

511, front; 511, rear; 513, first side wall; 514, second side wall; 515, side brush; 516, locking mechanism; 518, mounting seat; 519, shaft; 510, motor;

521, lower opening; 522, side opening; 523, top opening;

531, connecting wall; 532, cleaning roller; 533, side brush; 534, retaining ring; 5311, inner wall surface; 5312, outer wall surface;

5315, lower notch; 5316, convex part; 5317, upper end face;

5151, brush holder; 5152, cleaning element;

535, connector; 5351, bearing mount; 5352, bearing; 5353, shaft;

5321, brush body; 5322, cleaning element; 5323, end; 5324, end; 5325, joint;

5331, brush holder; 5332, cleaning element; 5333, surface;

542, water retaining strip; 591, lower scraping strip;

6. Surface cleaning head; 61, housing; 62, side brush; 611, front; 612, rear; 613, first side wall; 614, second side wall; 621, wiping surface; 63, main brush; 631, disc-shaped cleaning surface; 64, suction nozzle; 65, motor;

300, the surface to be cleaned; 400, the vertical surface; 500, the vertical surface.

Detailed ways

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application.

Referring to FIG. 1, an embodiment of the present application provides a surface cleaning device 100, which is a vertical wet surface cleaning device, comprising a surface cleaning head 1 that can move back and forth on the surface to be cleaned, and a lower rotatable lower part. Connected to the vertical body 2 of the surface cleaning head 1, a cleaning liquid delivery system for supplying cleaning liquid to the surface cleaning head 1, and a dirty liquid recovery system for recovering the dirty liquid from the surface to be cleaned. The upright body 2 includes an upright portion 21 and a handle portion 22 fixedly connected to the upright portion 21 and located on the upper side of the upright portion 21 . The lower end of the upright portion 21 is rotatably connected to the surface cleaning head 1 . The directions herein are based on the viewing angle of the user standing on the rear side of the surface cleaning apparatus 100 and pushing the surface cleaning apparatus 100 forward. For purposes of description relative to the figures, the terms "upper", "lower", "right", "left", "rear", "front", "lateral", "portrait", "inner", "outer" and their Derivatives, based on the viewing angle of the user standing on the rear side of the surface cleaning apparatus 100 of FIG. 1 and pushing the surface cleaning apparatus 100 forward.

Referring to FIGS. 2-5 , a surface cleaning head 1 is provided, which includes a housing 11 forming the main skeleton part of the surface cleaning head 1 , a brush cavity 12 located at the front of the housing 11 , and a brush cavity 12 disposed in the brush cavity 12 The brush assembly 13 and the upper cover 14 installed on the top of the housing 11 . Inside the housing 11 is provided a suction channel 15 in fluid communication with the brush chamber 12 .

The casing 11 may be assembled from a plurality of injection-molded parts, and the casing 11 has a front part 111 , a rear part 112 , a first side wall 113 and a second side wall 114 . The second side wall 114 protrudes further forward than the second side wall 113 . A pair of moving wheels 16 are mounted at the rear portion 112 of the housing 11 . A pair of moving wheels 16 can drive the entire surface cleaning head 1 to move on the surface to be cleaned.

As shown in FIG. 6 , a motor 110 and a liquid pump 183 are installed on the inner side of the rear of the housing 11 .

Continuing as shown in FIGS. 2-5 , the front part of the housing 11 also has a first liquid spray nozzle 181 and a second liquid spray nozzle 182 , and the first liquid spray nozzle 181 and the second liquid spray nozzle 182 are in fluid communication with the liquid pump 183 . , to be able to distribute the cleaning liquid to the brush assembly 13 .

In other embodiments, the first liquid spray nozzle 181 and/or the second liquid spray nozzle 182 may also be configured to dispense the cleaning liquid directly to the surface to be cleaned. A lower wiper strip 191 and an upper wiper strip 192 are also installed on the front of the housing 11 . The upper wiper bar 192 is positioned above the lower wiper bar 191 and simultaneously positioned below the first liquid spray nozzle 181 and the second liquid spray nozzle 182 . In this example, the lower scraper 191 is a flexible scraper, which is located at the bottom of the housing 11 and is configured to be able to contact the surface to be cleaned; the upper scraper 191 is made of a hard material and can contact the cleaning roller 132 to remove the Excess liquid is removed from cleaning roller 132, which is rotated and soaked with liquid.

The brush cavity 12 is jointly defined by the front portion 111 of the housing 11 , the first side wall 113 and the second side wall 114 . One end opening of the suction channel 15 is located at the front of the housing 11 and is in fluid communication with the brush chamber 12 . The brush cavity 12 has a lower opening 121 facing the surface to be cleaned, a side opening 122 facing outwards and a top opening 123 . In this example, the lower wiper strip 191 will be able to define the rear side edge of the lower opening 121 .

As shown in FIG. 7 , the brush assembly 13 is an integral assembly, which includes a connecting wall 131, a cleaning roller 132 on one side of the connecting wall 131, a side brush 133 on the other side of the connecting wall 131, mounted on the connecting wall 131 and The retaining ring 134 is on the same side as the side brush 133, and the cleaning roller 132 and the side brush 133 are mechanically coupled together, and they can rotate together relative to the connecting wall 131 about the transverse axis X1.

Referring to FIG. 8 , the connecting wall 131 may be an integral injection-molded component, or may be assembled from multiple components. The main body of the connecting wall 131 is a wall that extends back and forth and has a certain thickness. This wall has opposite inner sidewall surfaces 1311 and outer sidewall surfaces 1312. The rear portion of the inner sidewall surface 1312 has a convex portion 1316 laterally protruding toward the inner side. An operable lock mechanism 1315 is mounted on the portion 1316 . By means of the locking mechanism 1315 , the connecting wall 131 can be locked on the front of the housing 11 . The outer sidewall surface 1312 has a recessed portion 1313 configured to receive the side brush 133 . The recessed portion 1313 intersects with the lower opening 121 of the brush cavity 12 , that is, the recessed space formed by the recessed portion 1313 is in fluid communication with the lower opening 121 . The upper part of the connecting wall 131 has an upper end surface 1317, the lower part of the connecting wall 131 has a lower notch 1318, the front part of the connecting wall 131 has a front side surface 1319 and a front notch 1314 located directly in front of the concave part 1313, the front notch 1314 and the concave part 1313 is connected.

Continuing as shown in FIG. 7 , the cleaning roller 132 includes a cylindrical brush body 1321 and cleaning elements 1322 covering the outer peripheral surface of the cylindrical brush body 1321 . The cleaning element 1322 can be made of one or more specifications of soft fluff, such as cotton fiber fluff, PP fiber fluff, etc.; these fluff are preferably made of materials that can be wetted by liquids. One end 1323 of the cleaning roller 132 is rotatably supported on the inner side wall surface 1312 of the connecting wall 131 through the connecting head 135 . The cleaning roller 132 is provided so as to be detachable from the connecting wall 131 .

As shown in FIG. 9A , the side brush 133 includes a brush holder 1331 and a plurality of cleaning elements 1332 disposed on the brush holder 1331 . The cleaning elements 1332 contain flexible tufts of bristles and short blades. A plurality of cleaning elements 1332 are distributed along the circumference of a circle whose center falls on the transverse axis line X1 , that is, distributed along the outer peripheral wall of the brush holder 1331 .

As shown in FIG. 9B , the side brush 833 encloses the brush holder 8331 and several cleaning elements 8332 disposed on the brush holder 8331 . The number of cleaning elements 8332 contains only a few tufts of bristles. Several cleaning elements 8332 are distributed along the circumference of a circle whose center falls on the transverse axis X11 , that is, distributed along the outer peripheral wall of the brush holder 8331 .

As shown in FIG. 9C , the side brush 933 encloses the brush holder 9331 and several cleaning elements 9332 disposed on the brush holder 9331 . The number of cleaning elements 9332 are flexible cleaning pads. Several cleaning elements 9332 are sleeved or pasted on the periphery of the entire brush holder 9331 .

Referring to FIGS. 4 , 7 and 8 , the side brush 133 is rotatably supported on the outer side wall surface 1311 of the connecting wall 131 and located in the concave portion 1313 . The side brush 133 is also provided to be detachable from the connecting wall 131 separately. When the side brush 133 is installed in the recessed portion 1313 of the outer side wall surface 1312, the front portion of the cleaning element 1332 will be exposed to the outside through the notch 1314 at the front.

Referring to FIG. 10 , part of the cleaning elements 1332 of the side brush 133 are inclined toward the inner direction and deformed when the side brush 133 is rotated, so as to pass through the lower notch 1318 of the connecting wall 131 .

11 , the side brushes 133, 833 and 933 can all be installed in the recess 1313 of the connecting wall 131; and when the brush assembly formed together with the cleaning roller 132 is installed in the brush cavity 12, without disassembling the brush assembly Next, the side brush can be removed from the concave portion 1313 of the connecting wall 131 separately.

Referring to FIG. 8 , the retaining ring 134 is an arc-shaped flexible member, which is fixedly arranged on the outer side wall surface 1311 of the connecting wall 131 and surrounds the upper outer side of the side brush 133 . The retaining ring 134 can effectively block the liquid and dirt thrown from the side brush 133; the retaining ring 134 can also facilitate contact with the surface perpendicular to the surface to be cleaned (such as a low wall surface). The surface forms a sealing abutment effect, and promotes the formation of an effective negative pressure space at the recessed portion 1313 where the side brush 133 is located, thereby facilitating the transfer of the dirt around the side brush 133 by better suction force.

In some embodiments, the cleaning elements 1332 of the side brush 133 at least partially protrude laterally outward from the recessed portion 1313 beyond the outer sidewall surface 1311; thus, when the outer sidewall surface 1311 is moved to a surface similar to a wall, it is possible to achieve Wipe the surface. In other embodiments, the cleaning element 1332 can also be completely accommodated in the recessed portion 1313 . In some embodiments, the concave portion 1313 is not necessary, for example, the outer side wall surface of the connecting wall is almost a flat surface, and the side brush is directly mounted on the surface. In the embodiment in which the concave portion and the retaining ring are provided on the outer side wall of the connecting wall, whether the cleaning element can protrude outward is determined by the concave depth of the concave portion and the left and right width of the retaining ring.

Referring to FIG. 12 , when the brush assembly 13 is installed in the brush cavity 12 , the connecting wall 131 will interface with the first side wall 113 back and forth. The other end 1324 of the cleaning roller 132 will be mechanically coupled with the rotary joint 17 . The locking mechanism 1315 on the connecting wall 131 is locked on the housing 11 , so that the entire brush assembly 13 can be positioned in the brush cavity 12 . The connecting wall 131 covers most of the side openings 122 of the brush cavity 12 , and a part of the outer side wall surface 1312 of the connecting wall 131 constitutes part of the side outer contour surface of the surface cleaning head 1 . The cleaning elements 1322 at the lower part of the cleaning roller 132 will pass through the lower opening 121 to contact the surface to be cleaned; the cleaning elements 1332 at the lower part of the side brush 133 will also pass through the lower opening 121 to contact the surface to be cleaned. The first liquid jetting nozzle 181 faces the cleaning roller 132, the second liquid jetting nozzle 182 faces the side brush 133, and the upper scraper 192 abuts the cleaning roller 132 from behind.

Continuing as shown in FIG. 12 , the upper cover 14 is detachably arranged on the top of the housing 11 . When the upper cover 14 is connected to the top of the housing 11 , the upper cover 14 is located on the upper side of the brush assembly 13 and the upper cover 14 will abut the upper end surface 1317 of the connecting wall 131 , and the upper cover 14 can cover part of the top opening of the brush cavity 12 123. In this example, the upper cover 14 is locked on the casing 11 by cooperating with the locking mechanism 115 located at the top of the casing 11 . The top of the upper cover 14 also has an opening 141, and a part of the locking mechanism 1315 on the connecting wall 131 will be able to protrude from the opening 141 to the outside for the user to operate the locking mechanism 1315 outside the brush cavity. The brush assembly 13 will not be removed from the brush cavity 12 until the upper cover 14 is removed from the housing 11 .

As shown in FIG. 13 , a water blocking strip 142 is provided on the inner wall surface of the upper cover 14 . The water blocking strip 142 will abut with the cleaning element 1322 of the cleaning roller 132 when the upper cover is installed on the housing 11 , and the water blocking strip 142 will abut against the cleaning element 1322 of the cleaning roller 132 The strips 142 can not only scrape the liquid applied to the cleaning roller 132 , but also effectively prevent the liquid from flowing directly from the gap between the cleaning roller 132 and the upper cover 14 to the surface to be cleaned without passing through the cleaning roller 132 .

Continuing to refer to FIG. 1 , the handle portion 22 has a handle 221 for the user to hold, an operation panel 222 disposed on the handle 221 , and a rod body 223 supporting the handle 221 . Both ends of the rod body 223 are fixedly connected to the handle 221 and the upper part of the upright portion 21 respectively, and the form of the operation panel 222 is not limited to buttons, sliding buttons, triggers, and the like.

The upright portion 21 includes an upright casing 211 and a lower connecting end 212 located at the lower end of the upright casing 211 . The upright casing 211 constitutes the outer frame of the upright portion 21 and can accommodate several components, and the lower connecting end 212 is rotatably connected to the surface cleaning head 1 so that the upright body 2 can rotate relative to the surface cleaning head 1 . A human-computer interaction panel 23 is disposed on the upper end of the upright casing 211 , and the human-computer interaction panel 23 is configured to enable the user to control the surface cleaning apparatus 100 and display the working status of the surface cleaning apparatus 100 to the user. A rechargeable battery 24 is also disposed at the rear of the upright casing 211 . The rechargeable battery provides power for each energy-consuming component of the surface cleaning device 100 and is configured to be electrically connected to an external power source.

The cleaning liquid output system includes a cleaning liquid tank 25 for storing and supplying cleaning liquid to the outside, a first liquid spray nozzle 181 and a second liquid spray nozzle 182 arranged on the surface cleaning head 1, and realizing the cleaning liquid tank 25 and each spray nozzle. The liquid nozzle is in fluid communication with a liquid supply path (not shown in the figure) and a liquid pump 183 disposed in the liquid supply path and providing flow power for the cleaning liquid. The cleaning liquid tank 25 is detachably connected to the upright cabinet 211 to facilitate the user to add cleaning liquid to it. Wherein, the cleaning liquid is not limited to clear water, disinfectant water added with disinfectant, and cleaning agent solution added with cleaning agent.

The first liquid ejection nozzle 181 has a plurality of ejection openings, which are arranged in the left-right direction and located on the rear side of the cleaning roller 132 . The first liquid spray nozzle 181 is located downstream of the upper wiper bar 192 in terms of the rotational direction of the cleaning roller 132 . The water blocking strip 142 is located downstream of the first liquid spray nozzle 181.

The sewage recovery system includes a sewage recovery tank 26 for receiving and storing sewage, a recovery path for realizing fluid communication between the sewage recovery tank 26 and the brush chamber 12, and a suction motor 27 for providing negative pressure. The dirty liquid recovery box 26 is configured to be detachably connected to the upright cabinet 211, so as to facilitate the user to pour out the dirty liquid inside. The suction motor 27 is located inside the upright cabinet 211 and is in fluid communication with the sump recovery tank 26 . Wherein, the recovery path includes a suction channel 15 located in the housing 11 , and the suction channel 15 will connect upward to the sewage recovery tank 26 .

The working principle of the surface cleaning device 100 is described below. For the sake of simplicity and clarity, only the surface cleaning head 1 of the surface cleaning device 100 is shown in the figure, and the details are as follows:

As shown in FIG. 14 , when the surface cleaning head 1 performs a cleaning operation on a surface 300 to be cleaned. The liquid pump 183 is started. Under the action of the liquid pump 183, the cleaning liquid in the cleaning liquid tank 25 will be delivered to the first liquid spray nozzle 181 and the second liquid spray nozzle 182, and then distributed to the cleaning roller 132 and the side brush. 133 on. When the motor 110 is started, the cleaning roller 132 and the side brush 133 are driven to rotate, and the cleaning roller 132 and the side brush 133 wetted by the liquid will realize wet wiping of the surface to be cleaned at the location.

The suction motor 27 is activated and creates a negative pressure on the fluid path from the lower opening 121 to the suction motor 27 . Under the action of this negative pressure, the dirty liquid at the lower opening 121 and the dirty liquid scraped by the upper scraper 192 from the cleaning roller 132 will be sucked into the suction channel 15 together with the air, and further sent to the dirty liquid recovery tank 26, the solid dirt and liquid will be left in the sewage liquid recovery tank 26, and the clean air will be discharged to the outside after passing through the suction motor 27.

And when the surface cleaning head 1 is close to the vertical surface 400 , the retaining ring 134 will fit against the vertical surface 400 to form a negative pressure space at the recess 1313 . At this time, the rotating cleaning roller 132 can continuously brush the surface to be cleaned located below it; the rotating side brush 133 will clean the part of the surface to be cleaned located directly below the side brush 133, that is, the part intersecting with the vertical surface 400 The surface 300 to be cleaned is brushed. At this time, in the embodiment in which part of the cleaning elements 1332 of the side brush 133 protrudes laterally outward from the recessed part 1313 , part of the cleaning elements 1332 protruding from the recessed part 1313 will be able to brush part of the vertical surface 400 . Since part of the cleaning elements 1332 of the side brush 133 can be deformed and protrude from the lower notch 1318 of the connecting wall 131 to a position close to the cleaning roller 132 during rotation, it is beneficial to brush the part of the surface to be cleaned 300 directly below the connecting wall 131 , so as to help eliminate the cleaning blind area between the cleaning roller 132 and the side brush 133 and located directly under the connecting wall 131 .

Referring to FIG. 15 , an embodiment of the present application provides a surface cleaning head 5 . As shown in FIGS. 16-19 , the surface cleaning head 5 includes a housing 51 that forms the main skeleton part of the surface cleaning head 5 , a brush cavity 52 located at the front of the housing 51 , a brush assembly 53 arranged in the brush cavity 52 , and a brush assembly 53 . The upper cover 54 on the upper part of the casing 51 . Inside the housing 51 is provided a suction channel 55 in fluid communication with the brush chamber 52 .

The housing 51 may be assembled from a plurality of injection-molded parts, and the housing 51 has a front part 511 , a rear part 512 , a first side wall 513 and a second side wall 514 . The second side wall 514 protrudes further forward than the second side wall 513 . A pair of moving wheels 56 are mounted on the rear of the housing 51 . A pair of moving wheels 56 can drive the entire surface cleaning head 5 to move on the surface to be cleaned. A motor 510 and a liquid pump (not shown in the figure) are installed on the inner side of the rear of the housing 51 . A lower wiper strip 591 is also installed on the front of the housing 51 . The lower wiper strip 591 is a hard member located at the bottom of the housing 51 and can be integrally formed with the top of the housing 51, the lower wiper strip 591 is configured to be able to contact the surface to be cleaned. In this example, a rotatable side brush 515 is also installed on the outer side wall surface of the second side wall 514 , and the side brush 515 can also be driven and rotated by the motor 510 at the same time. In other embodiments, this side brush 515 may be removed.

The brush cavity 52 is jointly defined by the front of the housing 51 , the first side wall 513 and the second side wall 514 . One end opening of the suction channel 55 is located at the front of the housing 51 and is in fluid communication with the brush cavity 52 . The brush chamber 52 has a lower opening 521 facing the surface to be cleaned, a side opening 522 facing outwards and a top opening 523. In this example, the lower wiper strip 591 will be able to define the rear side edge of the lower opening 521 . The bottom of the housing 11 is further provided with a flexible scraper 593 on the rear side of the lower opening 521 .

As shown in Figures 20-21, the brush assembly 53 is an integral assembly, which includes a connecting wall 531 in the middle, a cleaning roller 532 on one side of the connecting wall 531, a side brush 533 on the other side of the connecting wall 531, and a side brush 533 on the other side of the connecting wall 531. The retaining ring 534 on the connecting wall 531 and on the outside with the side brush 533, and the cleaning roller 532 and the side brush 533 are mechanically coupled together, and they can rotate together relative to the connecting wall 531 about the transverse axis X2.

The connecting wall 531 may be an integral injection-molded component, or may be assembled from multiple components. The main body of the connecting wall 531 is a wall that extends back and forth and has a certain thickness. This wall has opposite inner sidewall surfaces 5311 and outer sidewall surfaces 5312. The rear part of the inner sidewall surface 5312 has a convex portion 5316 laterally protruding toward the inside. 5316 may be combined with a lock mechanism 516 provided on the front 511 and operable by the user. By means of the locking mechanism 516 , the connecting wall 531 can be locked on the housing 51 . The upper part of the connecting wall 531 has an upper end surface 5317 , and the lower part of the connecting wall 531 has a lower notch 5315 .

The cleaning roller 532 includes a cylindrical brush body 5321 and a cleaning element 5322 covering the outer peripheral surface of the cylindrical brush body 5322 . The cleaning element 5322 can be made of one or more specifications of soft fluff, such as cotton fiber fluff, PP fiber fluff, etc.; these fluff are preferably made of materials that can be wetted by liquids. One end 5323 of the cleaning roller 532 is rotatably supported on the inner side wall surface 5312 of the connecting wall 531 through the connecting head 535 . A joint 5325 is provided at the other end 5324 of the cleaning roller 532 . The cleaning roller 532 is provided so as to be detachable from the connection wall 531 .

The side brush 533 includes a brush holder 5331 and several cleaning elements 5332 disposed on the brush holder 5331 . The side brush 533 is provided so as to be detachable from the connecting wall 531. The brush holder 5331 has a surface 5333 facing the outside, and the transverse axis X2 runs through the surface 5331 . In this example, several cleaning elements 5332 are wiper pad material configured to be integrally detachable from the surface 5333 of the brush holder 5331. In other embodiments, number of cleaning elements 5332 may also include at least one of fluff tufts, sponge blocks, rubber strips.

In this example, the connecting head 535 is fixedly mounted on the connecting wall 531, and the connecting head 535 includes a bearing mounting chamber 5351 formed on the inner side wall surface 5311 of the connecting wall 531, a bearing 5352 mounted on the bearing mounting chamber 5351, and a bearing 5352 rotatably supported on the bearing The shaft 5353 on the 5352, one end of the shaft 5353 will be fixedly connected with one end 5323 of the cleaning roller 532, and the other end will be fixedly connected with the brush seat 5331 of the side brush 533.

The retaining ring 534 is an arc-shaped flexible part, which is fixedly arranged on the outer side wall surface 5311 of the connecting wall 531 and surrounds the upper outer side of the side brush 533 . The retaining ring 534 can effectively block the liquid and dirt thrown from the side brush 533, and the retaining ring 534 can also facilitate the formation of a seal with the surface that is perpendicular to the surface to be cleaned, such as a low wall, etc. Therefore, it is convenient to transfer out the dirt around the side brush 533 by better use of the suction force.

Referring to FIG. 22 , when the brush assembly 53 is installed in the brush cavity 52 , the connecting wall 531 will interface with the first side wall 513 back and forth. The joint 5325 at the other end 5324 of the cleaning roller 532 will be mechanically coupled to the rotary joint 57 . The locking mechanism 516 at the front of the housing 511 locks the projections 5316 on the connecting wall 531 on the housing 51 , so that the entire brush assembly 53 is positioned in the brush cavity 52 . The connecting wall 531 covers most of the side openings 522 of the brush cavity 52 , and part of the outer side wall surface 5312 of the connecting wall 531 constitutes part of the side outer contour surface of the surface cleaning head 5 . The cleaning elements 5322 below the cleaning roller 532 and the cleaning elements 5332 below the side brush 533 will pass through the lower opening 521 to contact the surface to be cleaned. The side brush 515 has a brush base 5151 and a cleaning element 5152 disposed on the brush base 5151 , and the lateral axis X3 and the lateral axis X2 around which the side brush 515 surrounds are the same straight line. The brush seat 5151 is fixedly mounted on a mounting seat 518, and the mounting seat 518 is fixedly connected with the rotary joint 57 through the shaft 519. When the motor 510 is working, it can simultaneously drive the rotary joint 57 and the mounting seat 518 to rotate, so as to simultaneously drive the brush assembly The cleaning roller 532 of 53 and the side brush 533 and the side brush 515 rotate.

Referring to FIG. 23 , the upper cover 54 is detachably arranged on the upper part of the casing 51 . When the upper cover 54 is connected to the housing 51 , the upper cover 54 is located on the upper side of the brush assembly 53 and will abut the upper end surface 5317 of the connecting wall 531 , and the upper cover 54 can cover the top opening 523 of the brush cavity 52 .

In this example, the upper cover 54 is locked on the casing 51 by means of a locking mechanism (not shown in the figure) located at the top of the casing 51 . A water blocking strip 542 and a plurality of liquid spray nozzles 58 are arranged on the inner wall surface of the upper cover 54 . A plurality of liquid spray nozzles 58 can distribute the cleaning liquid to the cleaning roller 532, the side brush 533 and the side brush 515 of the brush assembly 53; among them, the plurality of liquid spray nozzles 58 in the middle are facing the cleaning roller 532, and one is located at the side end The liquid spray nozzle 58 of the other side is facing the side brush 533, and the liquid spray nozzle 58 at the other side end is facing the side brush 515. In other embodiments, the liquid spray nozzle may also be configured to dispense cleaning liquid directly to the surface to be cleaned. When the upper cover 54 is installed on the housing 51, the water retaining strip 542 will abut against the cleaning element 5322 of the cleaning roller 532. The water retaining bar 542 can not only scrape the liquid applied to the cleaning roller 132, but also Effectively prevent the liquid from flowing directly from the gap between the cleaning roller 532 and the upper cover 54 to the surface to be cleaned without passing through the cleaning roller 532 . The brush assembly 53 will not be removed from the brush cavity 52 until the upper cover 54 is removed from the housing 51 .

Referring to FIG. 24, when the surface cleaning head 5 moves on the surface to be cleaned 300, it can use the cleaning roller 532 and the side brush 533 in the brush assembly 53 to brush the surface to be cleaned 300, and when the first side wall 513 moves close to When the vertical surface 400 is positioned perpendicular to the surface 300 to be cleaned, the retaining ring 534 will be in contact with the vertical surface 400, and the side brush 533 will also be in contact with the vertical surface 400, so as to realize the contact with the vertical surface 400 during rotation. Part of the vertical surface 400 is brushed. When the second side wall 514 moves to a position close to the vertical surface 500 perpendicular to the surface 300 to be cleaned, the rotating side brush 515 will achieve brushing of the part of the vertical surface 500 in contact therewith.

Referring to FIG. 25 , an embodiment of the present application provides a surface cleaning head 6 , which includes a housing 61 that can move on the surface 300 to be cleaned. The housing 61 includes a front portion 611 , a rear portion 612 , a first side wall 613 and a second side wall 614 . A side brush 62 that can rotate around a transverse axis X4 is disposed on the outer side wall surface of the first side wall 613 .

The side brush 62 has a wiping surface 621 and protrudes laterally outward with respect to the outer side wall surface of the first side wall 613 . The wiping surface 621 includes at least one of wiping pad material, fluff tufts, sponge blocks, and rubber strips, which can satisfy the cleaning and wiping of the surface. The material of the wiping surface 621 can be made of polyester or polyamide, etc. or known in the art. The composition can be composed of any other suitable material that can be used to clean the fluff for surfaces, and its preferred material is a liquid wettable material. In this example, the wiping surface 621 is in the shape of a disk, and in other embodiments, the wiping surface can also be in the shape of a "one" or an "S".

A pair of disk brushes 63 and suction nozzles 64 are also arranged on the bottom of the housing 61 . A pair of disk brushes 63 are distributed left and right and can rotate about respective longitudinal axis lines Y1 and Y2. Each of the pair of disk brushes 63 includes a disk-shaped cleaning surface 631 capable of rotating within the surface 300 to be cleaned. The suction nozzle 64 is located on the front side of the pair of disk-shaped cleaning surfaces 631 . The airflow, debris and dirty liquid stirred by the side brush 62 and the pair of disk brushes 63 will be sucked into the interior of the housing 61 by the suction nozzle 64 . In other embodiments, the disk brush 63 can also be replaced by a swinging brush that can translate in the left-right or front-rear direction, or a fixed brush that cannot move by itself. The cleaning surface can also adopt an oblong structure.

As shown in FIG. 26 , a motor 65 is also arranged inside the casing 61 . The motor 65 drives the pair of disk brushes 63 to rotate at the same time, and the rotation directions of the pair of disk brushes 63 are reversed at time. The side brush 62 is also driven to rotate by the motor 65 . Among them, in order to satisfy the vertical axis of rotation of the pair of disk brushes 63 and the side brushes 62 , a necessary reversing mechanism is provided between the motor 65 and the pair of disk brushes 63 and the side brushes 62 .

As shown in FIG. 27 , when the surface cleaning head 6 is working, as the housing 61 moves back and forth in the surface 300 to be cleaned, a pair of disk brushes 63 are simultaneously driven by the motor 65 to rotate. The disk-shaped cleaning surface 631 will be in constant contact with the surface to be cleaned 300, so as to realize wet wiping of the surface to be cleaned 300 with the help of the cleaning liquid; During the rotation of the side brush 62, the wiping surface 621 will be in constant contact with the vertical surface 500, so as to realize wet wiping with the vertical surface 400 by means of cleaning liquid; The debris and the dirty liquid will enter the interior of the housing 61 from the suction nozzle 64 together.

The surface cleaning head in the above embodiment can be used in various types of surface cleaning devices, such as vertical surface cleaning devices, self-moving surface cleaning robots, etc., which can make the surface cleaning device equipped with the surface cleaning head of this solution simultaneously. Satisfy the cleaning of target surfaces such as the surface of the corner area near the wall.

In the description of this specification, description with reference to the terms "embodiment" and the like means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

A surface cleaning device, comprising a surface cleaning head that can move along the surface to be cleaned, a cleaning liquid delivery system containing a cleaning liquid tank, and a dirty liquid recovery system containing a suction source and a dirty liquid recovery tank, characterized in that the The surface cleaning head includes: a housing;

a suction channel, located in the housing;

a brush chamber located at the front of the housing and having a lower opening facing the surface to be cleaned and a side opening laterally outward, the brush chamber being in fluid communication with the suction passage; and

a brush assembly removably mounted in the brush cavity and comprising a connecting wall, a cleaning roller and a side brush, the connecting wall being removably connected to the housing and covering at least part of the side portion opening, the connecting wall has opposite outer and inner sidewall surfaces, one end of the cleaning roller is installed at the inner sidewall surface of the connecting wall, and the side brush is installed at the outer sidewall surface of the connecting wall, The cleaning roller is configured to be driven by a driving device to rotate about a transverse axis, and the side brushes are connected with the cleaning roller in order to follow the cleaning roller to rotate around the transverse axis. mechanically coupled.
The surface cleaning device according to claim 1, wherein the brush assembly further comprises: a retaining ring, the retaining ring is mounted on the outer side wall of the connecting wall and surrounds at least the side brush of the side brush. On the outer side of the upper part, at least part of the retaining ring protrudes laterally from the outer side wall surface of the connecting wall.
3. The surface cleaning device of claim 2, wherein the retaining ring is at least partially formed of a flexible material.
The surface cleaning apparatus of claim 1, wherein the side brush includes a brush holder and a plurality of cleaning elements on the brush holder.
5. The surface cleaning device of claim 4, wherein at least a portion of said cleaning elements are distributed along a circumference around said transverse axis.
The surface cleaning device according to claim 4, wherein the outer side wall of the connecting wall has a concave portion, the concave portion intersects with the lower opening, and the concave portion is configured as Accepts the side brush as described.
6. The surface cleaning device according to claim 6, wherein the front part of the connecting wall has a front notch located directly in front of the concave part and communicated with the concave part, and part of the cleaning element is provided via The front notch is exposed to the outside.
The surface cleaning device according to claim 4, wherein the lower part of the connecting wall has a lower notch, and part of the cleaning element is inclined toward the inner direction and passes through the lower notch.
5. The surface cleaning device of claim 4, wherein the plurality of cleaning elements comprise bristle tufts.
The surface cleaning device according to claim 4, wherein the cleaning roller and the side brush can be removed from the connecting wall.
11. The surface cleaning apparatus of claim 10, wherein said side brushes are configured to be individually removable from said connecting wall when said brush assembly is assembled within said brush cavity.
The surface cleaning device according to claim 4, wherein the brush holder has an outer surface, the transverse axis runs through the surface, and the plurality of cleaning elements are at least partially arranged on the surface. said surface.
The surface cleaning device of claim 12, wherein the plurality of cleaning elements comprise at least one of wiping pad material, fluff tufts, sponge blocks, and short scrapers.
13. The surface cleaning apparatus of claim 12, wherein the plurality of cleaning elements are configured to be integrally detachable from the surface of the brush holder.
The surface cleaning device according to claim 4, wherein at least part of the plurality of cleaning elements protrudes laterally from the outer sidewall surface of the connecting wall.
The surface cleaning device according to claim 1, wherein the surface cleaning head comprises: an upper cover, the upper cover is detachably disposed on the top of the housing, and the brush assembly is configured The upper cover can only be removed from the brush cavity after the upper cover is disassembled from the housing.
The surface cleaning device of claim 16, wherein the connecting wall has an upper end surface, and the upper cover is configured to abut when the upper cover is installed on the top of the housing the upper end face.
The surface cleaning device according to claim 17, wherein the surface cleaning head comprises: a water blocking strip, the water blocking strip is arranged at the inner wall surface of the upper cover and on the upper cover Contacts the cleaning roller when mounted on top of the housing.
The surface cleaning device according to claim 1, wherein a part of the outer side wall surface of the connecting wall constitutes a part of the side outer contour surface of the surface cleaning head.
The surface cleaning device of claim 1, wherein the surface cleaning head comprises: a lower wiper bar located at the bottom of the housing, the lower wiper bar being used to define at least part of the lower portion an open rear side edge and configured to contact a surface to be cleaned; and an upper wiper bar configured to abut the cleaning roller to remove excess liquid from the liquid-impregnated cleaning roller .
The surface cleaning device according to claim 1, wherein the cleaning liquid delivery system further comprises: a first liquid spray nozzle assigned to the cleaning roller and a second liquid spray nozzle assigned to the side brush , the first liquid spray nozzle and the second liquid spray nozzle are both in fluid communication with the cleaning liquid tank.
The surface cleaning device according to claim 1, wherein the surface cleaning device is a vertical device and further comprises: a vertical body, the vertical body comprising an upright part and connected to the upright part The upper handle part, the lower end of the upright part is rotatably connected to the surface cleaning head, and the cleaning liquid tank, the dirty liquid recovery tank and the suction motor are all arranged on the upright part.
The surface cleaning device according to claim 1, wherein the surface cleaning device is a self-moving robot.
A surface cleaning head, which can move back and forth on the surface to be cleaned, is characterized in that: the surface cleaning head comprises: a pair of side parts, which are arranged opposite to left and right;

drive; and

at least one side brush, said at least one side brush being arranged at at least one said side portion and being configured to be driven by said drive means to rotate about a transverse axis, said transverse axis transverse Through the pair of side portions, at least part of each of the side brushes is exposed outward from the corresponding side portion.
The surface cleaning head according to claim 24, wherein the surface cleaning head further comprises: a cleaning roller, the cleaning roller is located between the pair of side parts, and each of the side brushes is located at the On the left or right side of the cleaning roller, the cleaning roller is configured to be driven by the driving device to rotate about the transverse axis.
26. The surface cleaning head of claim 25 wherein one of said side portions includes a first side wall and a connection located forwardly of said first side wall and detachable from said first side wall The connecting wall has an inner side wall surface and an outer side wall surface, a side brush is installed on the outer side wall surface, and one end of the cleaning roller is supported on the inner side wall surface.
The surface cleaning head according to claim 26, wherein the connecting wall, the cleaning roller and the side brush mounted on the connecting wall constitute a surface cleaning head that can be removed from the surface cleaning head At least a portion of the brush assembly removed.
The surface cleaning head of claim 27, wherein the surface cleaning head comprises: a housing, the first side wall and the second side wall are defined by the housing; a brush cavity, located in the front of the housing has a lower opening facing the surface to be cleaned and a side opening laterally outward, the brush assembly is removably mounted in the brush cavity, the connecting wall Removably attached to the housing and covering at least part of the side opening.
30. The surface cleaning head of claim 28, wherein the surface cleaning head comprises: a suction channel located within the housing, the suction channel being in fluid communication with the brush cavity.
The surface cleaning head of claim 29, wherein the brush assembly further comprises a retaining ring, the retaining ring is mounted on the outer side wall of the connecting wall and surrounds the upper portion of the side brush On the outer side, at least part of the retaining ring protrudes laterally from the outer side wall surface of the connecting wall.
The surface cleaning head of claim 27, wherein the brush assembly further comprises a connecting head disposed on the connecting wall, the connecting head comprising a bearing fixedly disposed on the connecting wall and A shaft supported on the bearing is rotated, one end of the shaft is connected with one end of the cleaning roller, and the other end is connected with the side brush.
The surface cleaning head of claim 24, wherein the surface cleaning head further comprises: at least one disk brush, the at least one disk brush is located at the bottom of the surface cleaning head and is located in the one Between opposing sides, each of the disc brushes is configured to be rotatable about a longitudinal axis.
33. The surface cleaning head of claim 32, wherein said at least one disk brush is configured to be simultaneously driven in rotation by said drive means.
33. The surface cleaning head of claim 32, wherein the surface cleaning head further comprises: a suction nozzle, the suction nozzle is disposed at the bottom of the surface cleaning head and located at the bottom of the at least one disk brush front side.
25. The surface cleaning head of claim 24, wherein the surface cleaning head comprises a pair of the side brushes, the pair of side brushes being disposed at the pair of side portions, respectively.