CN116135114A

CN116135114A - Surface cleaning apparatus

Info

Publication number: CN116135114A
Application number: CN202111363205.2A
Authority: CN
Inventors: 卞庄
Original assignee: Suzhou EUP Electric Co Ltd
Current assignee: Suzhou EUP Electric Co Ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2023-05-19

Abstract

The invention relates to a surface cleaning device, which comprises a seat body with a brush cavity and a rolling brush unit arranged at the brush cavity, wherein the brush cavity is provided with a lower opening, a left opening and a right opening; the rolling brush unit comprises a first rolling brush, a second rolling brush and a driving part, wherein the first rolling brush, the second rolling brush and the driving part are arranged side by side, a first cavity is formed in the first rolling brush, and a second cavity is formed in the second rolling brush; the driving part is connected with the base body and comprises at least one motor, a first rolling brush shaft positioned at the left side of the at least one motor and driven to rotate by the at least one motor, and a second rolling brush shaft positioned at the right side of the at least one motor and driven to rotate by the at least one motor, wherein at least part of the motors are positioned in the first cavity and/or the second cavity; the first rolling brush is detachably connected with the first rolling brush shaft, the left end part of the first rolling brush is positioned at the left opening, the second rolling brush is detachably connected with the second rolling brush shaft, and the right end part of the second rolling brush is positioned at the right opening.

Description

Surface cleaning apparatus

Technical Field

The invention relates to the field of cleaning equipment, in particular to wet type surface cleaning equipment.

Background

Wet surface cleaning apparatus generally include a housing with a brush cavity, a roller brush rotatably mounted at the brush cavity, and a liquid supply unit for supplying cleaning liquid to the roller brush. The rolling brush is driven by a driving device and uses the cleaning liquid to perform cleaning operation on the surface to be cleaned. There is a type of surface cleaning apparatus in the prior art having a pair of side-by-side roller brushes, the brush chamber of which is provided with a left opening and a right opening, and the pair of roller brushes are configured to extend to the openings on the corresponding sides respectively, so that the surface cleaning apparatus can clean corners of a wall. However, this type of surface cleaning apparatus locates the corresponding transmission member between the pair of rolling brushes, which makes the interval of the pair of rolling brushes larger, thereby making the surface cleaning apparatus have a cleaning dead zone, reducing the cleaning efficiency of the surface cleaning apparatus.

Disclosure of Invention

In order to solve the above-mentioned problems associated with a large distance between a pair of rolling brushes, an object of the present invention is to provide a surface cleaning apparatus capable of cleaning corners of a wall and greatly reducing the distance between a pair of rolling brushes.

In order to achieve the above object, the present invention provides the following technical solutions: the surface cleaning equipment can move on a surface to be cleaned, the surface cleaning equipment comprises a base with a brush cavity and a rolling brush unit arranged at the brush cavity, the brush cavity is provided with a lower opening, a left opening and a right opening, the rolling brush unit comprises a first rolling brush and a second rolling brush which are arranged side by side left and right and a driving part for driving the first rolling brush to rotate synchronously with the second rolling brush, a first cavity is formed in the first rolling brush, a second cavity is formed in the second rolling brush, the driving part is connected with the base, the driving part comprises at least one motor, a first rolling brush shaft which is positioned at the left side of the at least one motor and is driven to rotate by the at least one motor, and a second rolling brush shaft which is positioned at the right side of the at least one motor and is driven to rotate by the at least one motor, the first rolling brush shaft is arranged in the first cavity, the second rolling brush shaft is positioned at the right side of the at the second motor and the second rolling brush, the second rolling brush shaft is connected with the lower opening of the at the second rolling brush, and the second rolling brush shaft is positioned at the right side of the second rolling brush, and the second rolling brush shaft is connected with the lower opening of the rolling brush, and the second rolling brush is positioned at the lower end of the rolling brush.

Compared with the prior art, the surface cleaning device provided by the technical scheme has the advantages that the driving component is arranged in the first cavity of the first rolling brush and the second cavity of the second rolling brush, so that the synchronous rotation of the first rolling brush and the second rolling brush is ensured, and meanwhile, the distance between the first rolling brush and the second rolling brush is shortened.

In the above technical solution, preferably, the driving part further includes a motor mounting cover, the at least one motor is mounted in the motor mounting cover, and at least a part of the motor mounting cover is located in the first cavity and/or the second cavity. Further preferably, the motor mounting cover has a first annular surface and a second annular surface protruding radially outward, the right end of the first rolling brush abuts against the first annular surface, and the left end of the second rolling brush abuts against the second annular surface.

In the above preferred embodiment, it is further preferred that a first sealing strip is provided between the right end of the first rolling brush and the first annular surface; a second sealing strip is arranged between the left end part of the second rolling brush and the second annular surface.

In the above preferred embodiment, it is further preferred that a convex ring is provided on the motor mounting cover, and the first annular surface and the second annular surface are located on a pair of side surfaces facing away from each other in the left-right direction of the convex ring. It may be further preferred that the convex ring is fixedly connected with the base.

In the above preferred embodiment, it is further preferred that the first brush is provided with first bristles, the second brush is provided with second bristles, and the lengths of the first bristles and the second bristles are configured to: when the first rolling brush and the second rolling brush synchronously rotate, a part of the first bristles close to the first annular surface and a part of the second bristles close to the second annular surface can be mutually intersected. According to the preferred scheme, the first bristles and the second bristles which can be staggered mutually are arranged, so that the cleaning blind area between the first rolling brush and the second rolling brush is eliminated.

In the above preferred embodiment, it is further preferred that a longitudinal distance between the first annular surface and the second annular surface is less than 8mm.

In the above technical solution, preferably, a first interlocking mechanism is provided between the first rolling brush shaft and the first rolling brush, and the first interlocking mechanism has a first lock button capable of releasing the locking relationship between the first rolling brush shaft and the first rolling brush; the first lock button is exposed to the outside for operation by a user. It may be further preferred that the first lock button is located at the left opening.

In the above technical solution, preferably, a second interlocking mechanism is provided between the second rolling brush shaft and the second rolling brush, and the second interlocking mechanism has a second lock button capable of releasing the locking relationship between the second rolling brush shaft and the second rolling brush; the second lock button is exposed to the outside for operation by a user. It may be further preferred that the second lock button is located at the right opening.

In the foregoing aspect, preferably, the surface cleaning apparatus further includes a fluid supply unit including a supply tank storing a cleaning fluid and a fluid dispenser configured to dispense the cleaning fluid to the first and second rolling brushes, the fluid dispenser being in fluid communication with the supply tank. Further preferably, the surface cleaning apparatus further comprises a dirty liquid recovery unit including a dirty liquid recovery tank for storing a dirty liquid and a fluid recovery channel fluidly connecting the dirty liquid recovery tank and the brush chamber. Further preferably, the contaminated liquid recovery unit further comprises a suction motor in fluid communication with the contaminated liquid recovery tank.

In the above preferred solution, it is further preferred that a scraping strip is provided on the base, and the scraping strip extends into the brush cavity and abuts against the first rolling brush and the second rolling brush at the same time.

In the foregoing aspect, preferably, the driving part has only one of the motors and further includes a first decelerator and a second decelerator, the motor is a double-output shaft motor having opposite first and second rotation output ends, the first decelerator is located in the first cavity and configured to drivingly connect the first rotation output end and the first roller brush shaft, and the second decelerator is located in the second cavity and configured to drivingly connect the second rotation output end and the second roller brush shaft. Still further preferably, a portion of the motor is located in the first cavity and a portion of the motor is located in the second cavity.

In the foregoing technical solution, preferably, the surface cleaning apparatus is a robotic surface cleaning apparatus or an upright surface cleaning apparatus that is automatically movable.

Drawings

Fig. 1 is a schematic perspective view of a surface cleaning apparatus according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of the surface cleaning apparatus of FIG. 1 at A-A;

FIG. 3 is a partial enlarged view at B shown in FIG. 2;

FIG. 4 is an enlarged view of a portion at C shown in FIG. 2;

FIG. 5 is a schematic perspective view of a portion of the components of the surface cleaning apparatus of FIG. 1;

FIG. 6 is a schematic diagram showing a perspective view of the surface cleaning apparatus shown in FIG. 1;

FIG. 7 is a schematic perspective view of the surface cleaning apparatus shown in FIG. 1, wherein the first and second rolling brushes are separated from the driving portion;

fig. 8 is a partial enlarged view at D shown in fig. 7;

FIG. 9 is an exploded view of a driving part according to the present invention;

fig. 10 is a schematic perspective view of a surface cleaning apparatus according to a second embodiment of the present invention.

Detailed Description

In order to describe the technical content, constructional features, objects and effects of the invention in detail, the technical solutions of the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. Furthermore, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the specific shapes, configurations, and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

Hereinafter, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

Furthermore, spatially relative terms such as "under … …," "under … …," "under … …," "lower," "above … …," "upper," "above … …," "higher," "side" (e.g., as in "sidewall") and the like are used herein to describe one element's relationship to another element(s) as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" or "beneath" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "below … …" may include both upper and lower orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 shows a first embodiment of the present invention, a surface cleaning robot 100, the surface cleaning robot 100 being a robotic surface cleaning device capable of autonomous movement over a surface to be cleaned while performing cleaning operations including floor cleaning, scrubbing and dirt liquid recovery. The surface cleaning robot 100 includes a robot housing 1 capable of autonomously moving on the floor, a roll brush unit 5 loaded on a lower portion of the robot housing 1, a fluid supply unit, and a contaminated fluid recovery unit. Wherein the fluid supply unit is capable of storing and supplying the cleaning liquid to the roll brush unit 5, and the dirty liquid recovery unit is capable of recovering and storing the dirty liquid on the surface to be cleaned. The fluid supply unit and the contaminated fluid recovery unit are mounted on the robot housing 1.

Referring to fig. 5-6, the robotic base 1 includes a top wall 11, a bottom wall 12, side walls 13, and a navigation module 14 for navigating the surface cleaning apparatus 100. In this case, the navigation module 14 extends partially outside the top wall 11.

A pair of driving wheels 15 disposed opposite to each other from left to right and a driven wheel 16 disposed at the rear side of the pair of driving wheels 15 are mounted on the bottom wall 12. The driving wheel 15 is rotated by a moving motor (not shown) inside the base 1 to drive the surface cleaning robot 100 to move on the surface to be cleaned. Driven wheel 16 is a driven wheel that is free to rotate in a plane to effect control of the direction of movement of surface cleaning apparatus 100. A main switch 121 for manual operation by a user is also disposed on the bottom wall 12, and the main switch 121 can facilitate manual closing of the surface cleaning robot 100 by the user.

The side wall 13 is provided with a plurality of wall-following sensors 131, and the wall-following sensors 131 can monitor the distance between the surface cleaning apparatus 100 and the wall to prevent the surface cleaning robot 100 from colliding with the wall. The main controller 19 and the battery 18 are provided inside the housing 1, and the battery 18 is electrically connected with each energy consuming part of the surface cleaning robot 100 to supply electric power thereto. The main controller 19 is in signal connection with the various controllable components of the surface cleaning apparatus 100 to control the automatic operation of the surface cleaning apparatus 100.

Referring to fig. 2 and 7, a brush chamber 17 is formed at the front of the robot housing 1, and the brush chamber 17 has left and right

opposite openings

171 and 172 and a lower opening 173 extending between the left and

right openings

171 and 172. The roll brush unit 5 is arranged in a brush chamber 17.

The rolling brush unit 5 includes a first rolling brush 51 and a second rolling brush 52 arranged side by side left and right, and a driving part 4 for driving the first rolling brush 51 and the second rolling brush 52 to rotate synchronously, the driving part 4 is fixedly connected to an upper wall surface of the brush cavity 17, and the first rolling brush 51 and the second rolling brush 52 are respectively and detachably supported on a left side part and a right side part of the driving part 4.

Referring to fig. 9, the driving part 4 includes a motor 41, a motor mounting cover 42, first and

second reduction boxes

431 and 432 respectively located at left and right sides of the motor mounting cover 42, and first and second

roller brush shafts

451 and 452 respectively located at left and right sides of the first and

second reduction boxes

431 and 432.

The motor 41 is a double-output shaft motor and includes a motor housing 411, motor coils (not shown) inside the housing 411, and first and second

rotary output shafts

412 and 413 driven by the motor coils, the first and second

rotary output shafts

412 and 413 being arranged side-to-side opposite to each other and capable of synchronous rotation. In other embodiments, the driving part may also be provided with a pair of left-right opposite single-output-shaft motors to drive the first rolling brush shaft and the second rolling brush shaft to synchronously rotate.

Referring to fig. 3 to 4, the motor mounting cover 42 is formed with a motor chamber 421 located inside itself and a convex ring 422 formed by a part of the outer wall surface protruding radially outward. The motor 41 is disposed in the motor cavity 421, and the first rotary output shaft 412 and the second rotary output shaft 413 both pass through the motor mounting cover 42 and are located outside the motor cavity 421.

The boss 422 is located at a central position of the motor mounting cover 42 and includes an annular disk body having a first annular surface 424 and a second annular surface 425 facing away from each other, and a projection 423, the first annular surface 424 and the second annular surface 425 being spaced apart by less than 8mm. The boss 423 is upwardly extended and provided with an electrical connection channel 426 communicating between the inside and outside of the motor chamber 421, the electrical connection channel 426 being configured to be able to pass a conductive wire (not shown) to electrically connect the motor 41 with the battery 18. The protrusion 423 is configured to be fixedly connected with the housing 1 at the top of the brush chamber 17 to enable the roll brush unit 5 to be assembled to the robot housing 1. In this example, the motor mount cover 42 is configured by a first end cap 427 and a second end cap 428 which are disposed opposite to each other and divide the boss 423 into two, and in other embodiments, the motor mount cover may be provided as an integral member, and the boss may be provided at or near one end of the motor mount cover.

The first reduction box 431 includes a first reduction box 433, a first transmission gear (not shown) located inside the first reduction box 433, and a first reduction shaft 434 drivingly connected to the first transmission gear. The first reduction gearbox 433 is abutted with the left end portion of the motor mounting cover 42, and the first transmission gear is configured to be in transmission connection with the first rotation output shaft 412, so that the motor 41 can drive the first reduction shaft 434 to rotate. The first reduction shaft 434 penetrates the first reduction box 433 and extends outward.

The second reduction gearbox 432 includes a second reduction gearbox 435, a second drive gear (not shown) located inside the second reduction gearbox 435, and a second reduction shaft 436 in driving connection with the second drive gear. The second reduction box 435 is abutted against the right end portion of the motor mounting cover 42, and the second transmission gear is configured to be in transmission connection with the second rotation output shaft 413, so that the motor 41 can drive the second reduction shaft 436 to rotate. The second reduction shaft 436 passes out of the second reduction box 435 and extends outward.

As shown in fig. 2, the first rolling brush shaft 451 has a first shaft cavity 453, and the first reduction gearbox 431 extends into the first shaft cavity 453 and is in transmission connection with the first rolling brush shaft 451 through the first reduction shaft 434, so as to drive the first rolling brush shaft 451 to rotate around its own axis. A first bearing 441 is disposed between the first reduction gearbox 433 and the inner wall of the first shaft cavity 453, so as to dynamically and dynamically combine the first reduction gearbox 433 with the first roller brush shaft 441.

Referring to fig. 9, the left side portion of the first roller brush shaft 451 is configured to fit over the first roller brush 51, and an interlock mechanism is provided between the first roller brush shaft 451 and the first roller brush 51. The interlocking mechanism of this example includes a first coupling portion 454 at the left end of the first shaft cavity 453 and a first lock knob 455 detachably connected to the first coupling portion 454, the first lock knob 455 having a lock position and an unlock position that are switchable with each other; wherein the locked position can lock the first roller brush 51 to the first roller brush shaft 451 and the unlocked position can allow the first roller brush 51 to disengage from the first roller brush shaft 451. The first lock knob 455 is located at the left opening 171 of the brush chamber 17 and is exposed to the outside for convenience of the user's operation.

The second rolling brush shaft 452 has a second shaft cavity 456, and the second reduction gearbox 432 extends into the second shaft cavity 456 and is in transmission connection with the second rolling brush shaft 452 through the second reduction shaft 446, so as to drive the second rolling brush shaft 452 to rotate around its own axis. A second bearing 442 is disposed between the second reduction gearbox 435 and the inner wall of the second shaft cavity 456 to dynamically and dynamically combine the second reduction gearbox 435 with the second roller brush shaft 441.

The right end of the second roller brush shaft 452 is configured to fit over the second roller brush 52 and also has an interlock mechanism disposed therebetween. The interlocking mechanism includes a second coupling part 457 at a right side end of the second shaft cavity 456 and a second lock button 458 detachably coupled to the second coupling part 457, the second lock button 458 having a locking position capable of locking the second roller brush 52 to the second roller brush shaft 452 and an unlocking position capable of allowing the second roller brush 52 to be separated from the second roller brush shaft 452, which are switchable with each other. The second lock button 458 is located at the right opening 172 of the brush chamber 17 and is exposed outward to facilitate the user's operation.

Referring to fig. 3 to 4, the first roll brush 51 includes a first brush body 511 having left and right opposite left and right ends, a first cavity 512 axially penetrating the left and right ends of the first brush body 511, and first bristles 513 covering the outer surface of the first brush body 511. The first rolling brush 51 is sleeved on the outer side of the first rolling brush shaft 451 and is driven by the first rolling brush shaft 451 to rotate around the axis of the first rolling brush shaft 451. The lower portion of the first roller brush 51 passes out of the brush cavity 17 at the lower opening 173 to contact the surface to be cleaned. The left end of the first roller brush 51 extends to the left opening 171 of the brush chamber 17 to clean a surface in contact with or adjacent thereto.

The second roll brush 52 includes a second brush body 521 having left and right opposite left and right ends, a second cavity 522 axially penetrating the left and right ends of the second brush body 521, and second bristles 523 covering the outer surface of the second brush body 521. The second rolling brush 52 is sleeved on the outer side of the second rolling brush shaft 452 and is driven by the second rolling brush shaft 452 to rotate around the self axis. The lower portion of the second roller brush 52 passes out of the lower opening 173 of the brush cavity 17 to contact the surface to be cleaned. The left end of the second roller brush 52 extends to the right opening 172 of the brush chamber 17 to clean the contacted surface.

The roll brush unit 5 further comprises a first sealing ring 53 and a second sealing ring 54, the roll brush unit 5 being configured to: when the roller brush unit 5 is sleeved on the driving part 4, the right end of the first brush body 511 is in sealing contact with the first annular surface 454 through the first sealing ring 53, the left end of the second brush body 521 is in sealing contact with the second annular surface 425 through the second sealing ring 54, and the first bristles 513 and the second bristles 523 can mutually intersect and cover the lower opening 173 at the convex ring 422, so that the cleaning blind area is eliminated.

In this example, the first rolling brush 51 and the second rolling brush 52 have the same length, the driving part 4 is centrally disposed in the brush cavity 17, the first reduction gearbox 431, the first bearing 441 and the first brush roller shaft 451 are all located in the first cavity 511 of the first rolling brush 51, and the second reduction gearbox 432, the second bearing 442 and the second brush roller shaft 452 are all located in the second cavity 512 of the second rolling brush 52; in addition to the collar 422 and the corresponding portion of the motor 41, the left portion of the motor 41 and the first end cap 427 are located within the first cavity 512 and the right portion of the motor 41 and the second end cap 428 are located partially within the second cavity 522. In embodiments where the collar is disposed at the end of the motor mount housing, the motor and motor mount housing (except the collar portion) may also be located within only the first cavity or the second cavity.

Referring to fig. 1, 5 and 8, the fluid supply unit includes a supply tank 21 capable of storing a cleaning fluid, a fluid dispenser 24 provided on the robot housing 1 and located at the brush chamber 17, a fluid pump 22 in fluid communication with the supply tank 21, and a fluid line 23 implementing the fluid dispenser 24 in fluid communication with the supply tank 21. The supply tank 21 is located inside the housing 1 and exposes the top wall 11 for supplying cleaning fluid into the supply tank. The fluid pump 22 is provided inside the robot housing 1 and serves to provide a flowing power of the cleaning fluid. The fluid dispenser 24 is configured to extend from the left opening 171 to the right opening 172 in the left-right direction and has a plurality of liquid dispensing nozzles 25, each liquid dispensing nozzle 25 being configured to be directed toward the roller brush unit 5 to enable the simultaneous dispensing of the cleaning liquid to the first roller brush 52 and the second roller brush 52.

The dirty liquid recovery unit comprises a dirty liquid recovery tank 31 capable of storing dirty liquid, a suction motor 32 in fluid communication with the dirty liquid recovery tank 31, and a dirty liquid recovery channel 33 communicating the dirty liquid recovery tank 31 with the brush chamber 17. The dirty liquid recovery tank 31 and the suction motor 32 are both disposed inside the base 1, and the dirty liquid recovery tank 31 is detachably connected to the base 1 and exposed to the outside through the top wall 11, so that a user can pour the dirty liquid therein. The inlet and outlet of the dirty liquid recovery channel 33 are formed by a dirty liquid suction inlet 34 (see below) and a dirty liquid recovery tank inlet 35, respectively, the dirty liquid recovery tank inlet 35 being provided on the bottom wall 12 and being arranged to be connectable to the dirty liquid recovery tank 21.

As shown in fig. 8, a spoiler 174, a dirty liquid suction inlet 34, a scraper 175, and a liquid blocking plate 176, each extending from a left opening 171 to a right opening 172 in the left-right direction, are arranged in this order in the circumferential direction in the brush chamber 17 in the robot housing 1. The baffle 174 is adjacent to the rear side of the lower opening 173 and contacts the surface to be cleaned to prevent the dirty liquid on the surface to be cleaned from flowing back out of the lower opening 173. The scraping strip 175 is adjacent to the underside of the fluid dispenser 24, and the scraping strip 175 protrudes into the brush cavity 17 and is configured to simultaneously abut against the first and second roller brushes 51, 52 to scrape off the dirt and liquid from the surfaces of the first and

second bristles

513, 523. The liquid blocking plate 176 serves to block the cleaning liquid splashed from the first bristles 513 and the second bristles 523. The dirty liquid suction inlet 34 is formed on the wall surface of the base 1 and is in fluid communication with the brush chamber 17 to recover dirty liquid at the brush chamber 17.

The following describes the working principle of the surface cleaning robot 100: when the surface cleaning robot 100 performs a cleaning operation, the main controller 19 controls the robot housing 1 to autonomously move on the surface to be cleaned and to start the fluid pump 22, the motor 41, and the suction motor 32 simultaneously or sequentially backward in accordance with a program. The cleaning fluid in the supply tank 21 is partially passed through the fluid pipe 23 to the fluid distributor 24 by the fluid pump 22, and is distributed to the first and second roller brushes 51 and 52 by the respective liquid distribution nozzles 25 on the fluid distributor 24. The motor 41 simultaneously drives the first rolling brush 51 and the second rolling brush 52 to synchronously rotate, and the first rolling brush 51 and the second rolling brush 52 perform cleaning operation on the surface to be cleaned by using cleaning liquid. The suction motor 32 forms a negative pressure at the dirty liquid recovery tank 31, under which dirty liquid and debris on the surface to be cleaned and dirty liquid and dirt scraped off from the first bristles 513 and the second bristles 523 by the scraper 175 enter the dirty liquid recovery channel 35 through the dirty liquid suction inlet 34 and are finally stored in the dirty liquid recovery tank 31.

Fig. 10 shows a second embodiment of the present invention, a surface cleaning apparatus 200, the surface cleaning apparatus 200 being an upright cleaning apparatus capable of moving over a surface to be cleaned. To avoid redundancy, only the differences between the surface cleaning apparatus 200 and the surface cleaning apparatus 100 are described below.

The surface cleaning apparatus 200 includes a lower base 1 'and an upright body 20 rotatably coupled to an upper side of the base 1', a supply tank (not shown) and a dirty liquid recovery tank 31 'are detachably coupled to the upright body 20, and a suction motor 32' is disposed on an upper side of the dirty liquid recovery tank 31 'and in fluid communication with the dirty liquid recovery tank 31'. The fluid line 23 'and the dirty liquid recovery line 33' are each configured to extend from the interior of the upright body 20 to the interior of the housing 1 'to provide fluid communication between the supply tank and the brush chamber 17 and between the dirty liquid recovery tank 31' and the brush chamber 17, respectively.

The upper portion of the upright body 20 is provided with a handle assembly 30 for a user to hold, and the handle assembly 30 is provided with a control panel 40 capable of controlling the operation of the surface cleaning apparatus 200, and the form of the control panel 40 is not limited to a switch, a knob, and a touch screen. The handle 30 allows a user to move the surface cleaning apparatus 200 upward on a surface to be cleaned and to operate the surface cleaning apparatus 200 for cleaning operations.

The rolling brush unit and the base body scheme of the scheme can be applied to horizontal surface cleaning equipment, portable handheld surface cleaning equipment and the like, and can clean edge parts (such as walls) of a surface to be cleaned, so that a user does not need to clean the edge part areas for the second time, and the cleaning efficiency is improved.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, the scope of which is defined in the appended claims, specification and their equivalents.

Claims

1. A surface cleaning apparatus capable of moving over a surface to be cleaned, characterized in that the surface cleaning apparatus (100, 200) comprises a housing (1) having a brush chamber (17) and a roller brush unit (5) arranged at the brush chamber (17), the brush chamber (17) having a lower opening (173), a left opening (171) and a right opening (172), the roller brush unit (5) comprising a first roller brush (51) and a second roller brush (52) arranged side by side left and right and a drive part (4) mounted on the housing (1) and configured to drive the first roller brush (51) and the second roller brush (52) to rotate synchronously, the first roller brush (51) having a first cavity (512) therein, the second roller brush (52) having a second cavity (522) therein, the drive part (4) comprising at least one motor (41), the at least one motor (41) being located on the left side and the at least one motor (41) being driven by the at least one motor (41) on the right side and the first roller brush (41) being driven by the at least one motor (41) on the first shaft (451) and the second shaft (41) being rotated, the second rolling brush shaft (452) is arranged in the second cavity (522), at least part of the at least one motor (41) is positioned in the first cavity (512) and/or the second cavity (522), the first rolling brush (51) is detachably connected with the first rolling brush shaft (451) and the left end part of the first rolling brush (51) is positioned at the left opening (171), the second rolling brush (52) is detachably connected with the second rolling brush shaft (452) and the right end part of the second rolling brush (52) is positioned at the right opening (172), and the lower parts of the first rolling brush (51) and the second rolling brush (52) are both positioned at the lower opening (173).

2. The surface cleaning apparatus of claim 1 wherein said drive portion (4) further comprises a motor mounting housing (42), said at least one motor (41) being mounted within said motor mounting housing (42), said motor mounting housing (42) being at least partially disposed within said first cavity (512) and/or said second cavity (522).

3. The surface cleaning apparatus of claim 2, wherein the motor mounting cover (42) has a first annular surface (424) and a second annular surface (425) protruding radially outward, a right end of the first roller brush (51) being abutted against the first annular surface (424), and a left end of the second roller brush (52) being abutted against the second annular surface (425).

4. A surface cleaning apparatus as claimed in claim 3, characterized in that a first sealing strip (53) is arranged between the right end of the first roller brush (51) and the first annular surface (424), and a second sealing strip (54) is arranged between the left end of the second roller brush (52) and the second annular surface (425).

5. A surface cleaning apparatus as claimed in claim 3, wherein the motor mounting housing (42) is provided with a collar (422), and the first annular surface (424) and the second annular surface (425) are located on a pair of side surfaces of the collar (422) facing away from each other.

6. The surface cleaning apparatus of claim 5, wherein the collar (422) is fixedly connected to the base (1).

7. A surface cleaning apparatus as claimed in claim 3, characterized in that the first roller brush (51) is provided with first bristles (513) and the second roller brush (52) is provided with second bristles (523), the length of the first bristles (513) and the length of the second bristles (523) being configured to: when the first and second rolling brushes (51, 52) rotate synchronously, a portion of the first bristles (513) adjacent to the first annular surface (424) and a portion of the second bristles (523) adjacent to the second annular surface (425) can meet each other.

8. A surface cleaning apparatus as claimed in claim 3, wherein the longitudinal distance between the first annular surface (424) and the second annular surface (425) is less than 8mm.

9. The surface cleaning apparatus of claim 1 wherein a first interlock mechanism is provided between said first roller brush shaft (451) and said first roller brush (51), said first interlock mechanism having a first lock knob (455) for releasing a locked relationship between said first roller brush shaft (451) and said first roller brush (51); the first lock button (455) is exposed for user operation.

10. The surface cleaning apparatus of claim 9 wherein said first lock button (455) is located at said left opening (171).

11. The surface cleaning apparatus of claim 1 wherein a second interlock mechanism is provided between said second roller brush shaft (452) and said second roller brush (52), said second interlock mechanism having a second lock button (458) for releasing the locked relationship between said second roller brush shaft (452) and said second roller brush (52); the second lock button (458) is exposed for operation by a user.

12. The surface cleaning apparatus of claim 11 wherein said second lock button (458) is located at said right side opening (172).

13. The surface cleaning apparatus of claim 1, wherein the surface cleaning apparatus (100, 200) further comprises a fluid supply unit comprising a supply tank (21) storing cleaning fluid and a fluid dispenser (24) configured for dispensing cleaning fluid to the first (51) and second (52) roller brushes, the fluid dispenser (24) being in fluid communication with the supply tank (21).

14. The surface cleaning apparatus of claim 13, wherein the surface cleaning apparatus (100, 200) further comprises a dirty liquid recovery unit comprising a dirty liquid recovery tank (31) for storing dirty liquid and a fluid recovery channel (33) fluidly connecting the dirty liquid recovery tank (31) and the brush chamber (17).

15. The surface cleaning apparatus of claim 14, wherein the dirty liquid recovery unit further comprises a suction motor (32) in fluid communication with the dirty liquid recovery tank (31).

16. The surface cleaning apparatus of claim 14, wherein the base (1) is provided with a scraping strip (175), and the scraping strip (175) extends into the brush cavity (17) and abuts against the first rolling brush (51) and the second rolling brush (52) at the same time.

17. The surface cleaning apparatus of claim 1 wherein the drive (4) has only one motor (41) and further comprises a first speed reducer (431) and a second speed reducer (432), the motor (41) being a dual-output motor having axially opposite first (412) and second (413) rotational outputs, the first speed reducer (431) being located in the first cavity (512) and configured for drivingly connecting the first (412) rotational output and the first (451) brush shaft, the second speed reducer (432) being located in the second cavity (522) and configured for drivingly connecting the second (412) rotational output and the second (452) brush shaft.

18. The surface cleaning apparatus of claim 17 wherein a portion of said motor (41) is located within said first cavity (512) and a portion of said motor (41) is located within said second cavity (522).

19. The surface cleaning apparatus of claim 1, wherein the surface cleaning apparatus (100, 200) is an autonomously movable surface cleaning robot (100) or an upright surface cleaning machine (200).