CN218009616U - Cleaning head assembly and surface cleaning equipment - Google Patents

Abstract

The present disclosure provides a cleaning head assembly of a surface cleaning apparatus, comprising: a housing including a roller brush chamber and a suction port provided in the roller brush chamber; two first agitating bodies rotatably mounted in an opposed, depending arrangement within the roller brush chamber; two first stirring bodies are transversely arranged in the roller brush chamber in a suspension manner; the first stirring bodies have a mounting end and a free end, the free ends of the two first stirring bodies are oppositely arranged, a gap is formed between the free ends of the two first stirring bodies, the gap is close to the suction port part, and the first stirring bodies comprise main body parts with cylindrical surfaces, so that the mounting end and the free end of the first stirring bodies have equal or basically equal diameters; the first stirring body is provided with a spirally extending bristle row in the direction from the mounting end to the free end, the bristle row radially extends outwards from the first stirring body to a first radial distance, and the first radial distance is sequentially reduced in the direction from the mounting end to the free end. The present disclosure also provides a surface cleaning apparatus.

Description

Cleaning head assembly and surface cleaning equipment

Technical Field

The present disclosure belongs to the field of cleaning technology, and particularly relates to a cleaning head assembly and a surface cleaning device.

Background

Surface cleaning apparatus of the prior art, such as floor washers, sweeping robots, etc., typically include a cylindrical agitator rotatably mounted in a cleaning head for performing cleaning operations on the floor or the like. In agitators having one or more protruding bristles, the bristles are activated primarily when cleaning a carpet surface. The rotation of the cylindrical agitator causes the bristles to sweep across the carpet surface and agitate the fibers of the carpet and, in conjunction with the result of the vacuum pumping action, dislodge the soil from the carpet fibers. During removal, hair or other threads may become entangled around the brush bar or its attachment. This can lead to poor performance of the surface cleaning apparatus.

SUMMERY OF THE UTILITY MODEL

To solve at least one of the above technical problems, the present disclosure provides a cleaning head assembly of a surface cleaning apparatus, including:

a housing including a roller brush chamber and a suction port provided in the roller brush chamber;

two first agitating bodies rotatably mounted in an opposed, depending arrangement within the roller brush chamber;

wherein two of said first agitating bodies are arranged laterally suspended within said roller brush chamber such that the longitudinal axes of the first agitating bodies during use are perpendicular or substantially perpendicular at an acute angle to the direction of movement of the cleaning head assembly;

the first stirring bodies have a mounting end and a free end, the free ends of the two first stirring bodies are oppositely arranged, a gap is formed between the free ends of the two first stirring bodies, the gap is adjacent to the suction port part, and the first stirring bodies comprise main body parts with cylindrical surfaces, so that the mounting end and the free end of the first stirring bodies have equal or basically equal diameters;

the first stirring body is provided with a spirally extending bristle row in the direction from the mounting end to the free end, the bristle row extends outwards and radially to a first radial distance from the first stirring body, and the first radial distance is sequentially reduced from the mounting end to the free end.

According to the cleaning head assembly of at least one embodiment of the present disclosure, the first agitating body further includes a protrusion disposed on the cylindrical surface of the main body portion, the protrusion extending spirally in a direction from the mounting end to the free end, the bristle row being disposed on the protrusion such that the bristle row extends radially to a first radial distance.

According to the cleaning head component of at least one embodiment of the present disclosure, the protrusion comprises a base part and a pair of ridge parts, the base part and the pair of ridge parts are sequentially arranged from the radial direction of the main body part, the bristle row extends outwards from the base part, the bristle row is arranged between the pair of ridge parts, and the top end of the bristle row extends out of the pair of ridge parts.

According to at least one embodiment of the present disclosure, the base has a second radial dimension, the bristle rows have a constant third radial dimension, the second radial dimension decreasing in sequence in a direction from the mounting end to the free end such that the first radial distance decreases in sequence in a direction from the mounting end to the free end.

According to the cleaning head assembly of at least one embodiment of the present disclosure, the base has a constant second radial dimension, and the bristle rows have a third radial dimension that decreases in order in a direction from the mounting end to the free end, such that the first radial distance decreases in order in the direction from the mounting end to the free end.

The cleaning head assembly according to at least one embodiment of the present disclosure further comprises two first motor assemblies, each of the first agitating bodies being drivable by a corresponding one of the first motor assemblies.

The cleaning head assembly according to at least one embodiment of the present disclosure further includes a second agitator body that is mountably disposed within the housing and in front of the first agitator body.

According to the cleaning head assembly of at least one embodiment of the present disclosure, the housing includes a non-removable cover for at least partially covering the first agitating body but not the second agitating body.

According to the cleaning head assembly of at least one embodiment of the present disclosure, the non-removable cover body includes a pair of tapered inner walls to contact outer circumferential portions of the pair of first agitating bodies, respectively.

According to the cleaning head assembly of at least one embodiment of the present disclosure, the pair of tapered inner walls have a junction at a position corresponding to a position of a gap between free ends of the two first agitating bodies.

According to the cleaning head assembly of at least one embodiment of the present disclosure, the position of the joint corresponds to the position of the suction port portion.

According to another aspect of the present disclosure, there is provided a surface cleaning apparatus comprising a cleaning head assembly according to any one of the embodiments of the present disclosure.

According to at least one embodiment of the present disclosure, the surface cleaning apparatus is a wet surface cleaning apparatus or a non-wet surface cleaning apparatus.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

Fig. 1 is an overall structural schematic view of a cleaning head assembly of one embodiment of the present disclosure.

Fig. 2 is a partial structural schematic view of a cleaning head assembly of one embodiment of the present disclosure.

Fig. 3 is a bottom view of a cleaning head assembly of one embodiment of the present disclosure.

Fig. 4 is a top view of the cleaning head assembly of one embodiment of the present disclosure with a portion of the housing (upper housing) removed.

Fig. 5 is a structural schematic view of a first housing (upper housing) of a housing of a cleaning head assembly of an embodiment of the present disclosure.

Fig. 6 is a structural schematic view of a second housing (lower housing) of the housing of the cleaning head assembly of one embodiment of the present disclosure.

FIG. 7 is a schematic view of a cleaning head assembly of one embodiment of the present disclosure with the housing removed.

Fig. 8 shows a detailed structure of the first agitating body of an embodiment of the present disclosure.

Fig. 9 shows the structure of the first stirring body as seen from the free end.

Fig. 10 shows the structure of the first stirring body as viewed from the mounting end.

Fig. 11 is an overall structural view of a first agitating body of a cleaning head assembly according to an embodiment of the present disclosure.

Fig. 12 isbase:Sub>A sectional view taken alongbase:Sub>A-base:Sub>A of fig. 11.

Description of the reference numerals

110. First stirring body

111. Main body part

112. Protrusion part

113. Brush bristle row

120. Second stirring body

130. Cleaning unit

140. Suction mouth

150. First motor assembly

151. The first motor

200. Shell body

210. First shell

220. Second shell

1000. Cleaning head assembly

1108. Mounting end

1109. Free end

1121. Base part

1122. Ridge part

2101. Non-removable cover

2102. Removable cover

2103. First container

2104. Conical inner wall

2105. Junction joint

2203. A second accommodating part.

Detailed Description

The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.

The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in an order reverse to the order described. In addition, like reference numerals denote like parts.

When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.

For descriptive purposes, the present disclosure may use spatially relative terms such as "below … …," below … …, "" below … …, "" below, "" above … …, "" above, "" … …, "" upper "and" side (e.g., in "sidewall") to describe the relationship of one component to another (other) component as shown 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 "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of "above" and "below". Further, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.

The cleaning head assembly of the present disclosure is described in detail below with reference to fig. 1 to 12.

Referring first to fig. 1 to 4, a cleaning head assembly 1000 of one embodiment of the present disclosure includes:

a housing 200, the housing 200 including a roller brush chamber and a suction port 140 provided in the roller brush chamber;

two first stirring bodies 110 rotatably mounted in a relatively suspended arrangement within the roller brush chamber;

wherein two first stirring bodies 110 are arranged laterally suspended in the roller brush chamber such that the longitudinal axes of the first stirring bodies 110 during use are perpendicular or substantially perpendicular at an acute angle to the direction of movement of the cleaning head assembly 1000;

the first stirring body 110 has a mounting end 1108 and a free end 1109, the free ends 1109 of the two first stirring bodies 110 are oppositely arranged, a gap is formed between the free ends 1109 of the two first stirring bodies 110, the gap is adjacent to the suction port part 140, the first stirring body 110 comprises a main body part 111 with a cylindrical surface, so that the mounting end 1108 and the free end 1109 of the first stirring body 110 have equal or substantially equal diameters;

the first agitator body 110 is provided with helically extending bristle rows 113 in a direction from the mounting end 1108 to the free end 1109, the bristle rows 113 extending radially outward from the first agitator body 110 to a first radial distance, the first radial distance decreasing in the order from the mounting end 1108 to the free end 1109.

The cleaning head assembly 1000 shown in fig. 1 may also include a roller wheel and attachment portion (for removably attaching to the main body portion of the surface cleaning apparatus), and the shape of the housing 200 shown in fig. 1 may be modified, all within the scope of the present disclosure.

Fig. 2 illustrates a roller brush chamber within which a pair of first agitating bodies 110 of the present disclosure can be arranged in a laterally overhanging manner, and in some embodiments of the present disclosure, the roller brush chamber includes a first region for accommodating a pair of first agitating bodies 110 of the present disclosure and a second region for accommodating a second agitating body 120 (roller brush, etc.) of the present disclosure described below.

Fig. 2 also shows the position of the suction mouth 140 in the roll brush chamber.

Referring to fig. 3 and 4, according to a preferred embodiment of the present disclosure, the suction port 140 of the cleaning head assembly 1000 is adjacent to the free ends 1109 of the two first agitating bodies 110, i.e., the suction port 140 faces the gap between the two free ends 1109, to suck the contaminants collected to the gap or the adjacent area of the gap by the first agitating bodies 110, thereby improving the contaminant suction efficiency.

According to a preferred embodiment of the present disclosure, referring to fig. 4 and 8, the two first stirring bodies 110 of the present disclosure are oppositely suspended within the housing 200, and a gap is formed between the free ends 1109 of the two first stirring bodies 110, the gap being close to the suction mouth portion 140 of the cleaning head assembly 1000.

The present disclosure enables the dirt collected by the first stirring body 110 near the free end 1109 to be more efficiently sucked by the suction port 140 by the above structural design.

The suction port 140 of the cleaning head assembly 1000 communicates with the suction line of the surface cleaning apparatus and the suction port 140 can suction dirt near the free end 1109 based on a suction airflow generated by a suction source on the suction line of the surface cleaning apparatus.

The suction line of the surface cleaning apparatus and the suction source disposed on the suction line may take the configurations of the prior art, and the disclosure is not particularly limited thereto.

The cleaning head assembly 1000 of the present embodiment can collect dirt toward a gap between the two free ends 1109 by setting the radial extension distance (first radial distance) of the bristle rows 113 on the two first agitating bodies 110 such that the first radial distance is gradually reduced in the direction from the mounting end 1108 to the free ends 1109 of the first agitating bodies 110, and improve the cleaning efficiency and the cleaning effect of the cleaning head assembly 1000 in cooperation with the suction operation of the suction port part 140.

Referring to fig. 8, preferably, in some embodiments of the present disclosure, each of the two first agitating bodies 110 of the present disclosure further includes a protrusion 112 disposed on the cylindrical surface of the body portion 111, the protrusion 112 spirally extends in a direction from the mounting end 1108 to the free end 1109, and the bristle row 113 is disposed on the protrusion 112 such that the bristle row 113 radially extends to a first radial distance, such that the first radial distance gradually decreases in a direction from the mounting end 1108 to the free end 1109 of the first agitating body 110.

Referring to fig. 8 and 11, according to a preferred embodiment of the present disclosure, the protrusion 112 of the cleaning head assembly 1000 of the present disclosure includes a base portion 1121 and a pair of ridges 1122, the base portion 1121 and the pair of ridges 1122 being arranged in order from the radial direction of the main body portion 111, the bristle rows 113 extending outward from the base portion 1121, the bristle rows 113 being disposed between the pair of ridges 1122 and the top ends of the bristle rows 113 being protruded from the pair of ridges 1122.

The cleaning head assembly 1000 of the present embodiment redesigns the configuration and shape of the first agitator 110, designs the protrusion 112 extending spirally from the mounting end 1108 to the free end 1109 on the first agitator 110, designs the protrusion 112 to extend radially outward from the main body 111 to a first radial distance, and the first radial distance gradually decreases from the mounting end 1108 to the free end 1109 of the first agitator 110, so that the radial dimension of the first agitator 110 from the mounting end 1108 to the free end 1109 gradually decreases, and the first agitator 110 of the present disclosure can collect the dirt from the outside to the inside by matching with the spiral design of the protrusion 112, thereby improving the dirt collection efficiency.

In some embodiments of the present disclosure, the base 1121 of the cleaning head assembly 1000 has a second radial dimension, and the bristle row 113 has a constant third radial dimension, the second radial dimension decreasing (i.e., tapering) in order in a direction from the mounting end 1108 to the free end 1109, such that the first radial distance decreases in order in a direction from the mounting end 1108 to the free end 1109.

In other embodiments of the present disclosure, the base 1121 of the cleaning head assembly 1000 has a constant second radial dimension, and the bristle row 113 has a third radial dimension that decreases (i.e., tapers) in order in a direction from the mounting end 1108 to the free end 1109, such that the first radial distance decreases in order in a direction from the mounting end 1108 to the free end 1109.

Referring to fig. 1 and 5, according to a cleaning head assembly 1000 of a preferred embodiment of the present disclosure, a housing 200 includes a non-removable cover 2101 for at least partially covering the first agitating body 110 but not covering the second agitating body 120.

Referring to fig. 5, the non-removable cover 2101 includes a pair of tapered inner walls 2104 to contact outer circumferential portions of the pair of first stirring bodies 110, respectively.

In fig. 5, a pair of tapered inner walls 2104 have joints 2105, the position of the joints 2105 corresponding to the position of the gap between the free ends 1109 of the two first stirring bodies 110.

Preferably, the position of the joint 2105 corresponds to the position of the suction mouth 140.

Referring again to fig. 3, a pair of first agitating bodies 110 of the present disclosure are at least partially exposed from the housing 200 to contact the floor to be cleaned.

Referring to fig. 3 and 4, the free ends 1109 of the two first agitating bodies 110 are oppositely arranged, so that the first agitating bodies 110 of the cleaning head assembly 1000 of the present disclosure can collect dirt toward the vicinity of the free ends 1109 when they are rollably rotated, thereby improving the dirt collecting efficiency.

Fig. 3 also shows the lower open region of the housing 200, via which the first stirring body 110 can be brought into contact with a surface to be cleaned on the floor. The lower open area may be rectangular or substantially rectangular in shape.

Fig. 4 is a schematic configuration view of the cleaning head assembly 1000 after an upper portion of the housing 200 is removed. Fig. 7 is a schematic view of the cleaning head assembly 1000 with the entire housing 200 removed.

Fig. 4 also shows two first motor assemblies 150, each driving one of the first stirring bodies 110. In some embodiments of the present disclosure, the first stirring body 110 is mounted within the housing 200 via the first motor assembly 150. The first stirring body 110 can be driven to rotate by the first motor assembly 150.

Fig. 5 and 6 illustrate a case 200 composed of a first case 210 and a second case 220 according to an embodiment of the present disclosure.

Referring to fig. 5 and 6, in some embodiments of the present disclosure, the housing 200 of the present disclosure is preferably detachably assembled by the first housing 210 and the second housing 220.

Also shown in fig. 6 is a cleaning unit 130 (described in detail below), and in some embodiments of the present disclosure, the cleaning unit 130 is mounted on the second housing 220.

Fig. 8 shows a detailed structure of the pair of first agitating bodies 110 of one embodiment of the present disclosure.

Referring to fig. 8, in some embodiments of the present disclosure, the protrusion 112 includes a base portion 1121 and a pair of ridges 1122 (two ridges 1122), the base portion 1121 and the pair of ridges 1122 being arranged in sequence radially outward from the main body portion 111, the bristle row 113 extending outward from the base portion 1121, the bristle row 113 being disposed between the pair of ridges 1122 and the top end of the bristle row 113 being extended from the pair of ridges 1122.

Fig. 9 shows the structure of the first stirring body 110 when viewed from the free end 1109. Fig. 10 shows the structure of the first stirring body 110 as viewed from the mounting end 1108.

According to the preferred embodiment of the present disclosure, the spiral direction of the protrusion 112 of the first stirring body 110 of the cleaning head assembly 1000 of the present disclosure is clockwise when viewed from the free end 1109, and referring to fig. 9, the present disclosure improves the dirt collecting effect by designing the spiral direction and decreasing (i.e., gradually decreasing) the first radial distance (i.e., the first radial dimension) of the protrusion 112 radially extending outward from the main body 111 from the mounting end 1108 of the first stirring body 110 to the free end 1109 in sequence.

In some embodiments of the present disclosure, referring to fig. 8-10, the base 1121 has a second radial distance (i.e., a second radial dimension) that decreases (i.e., tapers) from the mounting end 1108 to the free end 1109, and the bristle rows 113 have a constant third radial distance (i.e., a third radial dimension), i.e., the bristles of the bristle rows 113 are all the same length.

Fig. 11 shows a schematic size diagram of the first stirring body 110 according to an embodiment of the present disclosure, and as shown in fig. 11, the first radial distance of the protrusion 112 gradually decreases in a direction from the mounting end 1108 to the free end 1109, and in fig. 11, d2> d1.

Fig. 12 isbase:Sub>A sectional view taken along the linebase:Sub>A-base:Sub>A of fig. 11. As can be seen in fig. 12, the first radial distance of the protrusion 112 decreases inbase:Sub>A direction from the mounting end 1108 to the free end 1109.

In consideration of the arrangement space and reliability of the cleaning head assembly 1000 of the present disclosure, the present disclosure preferably drives the second agitating body 120 to rotate using a built-in motor.

An accommodation chamber may be formed within the cylindrical base portion of the second stirring body 120 to accommodate an interior motor, the interior motor may include a motor, an output shaft, and a spline, a driving force of the motor is transmitted to the cylindrical base portion of the second stirring body 120 through the output shaft and the spline, and a motion receiving structure (spline) is provided within the cylindrical base portion to receive a rotational motion output from the interior motor.

Those skilled in the art can make modifications/selections on the specific structure of the built-in motor in light of the technical solution of the present disclosure, and all such modifications/selections fall within the scope of the present disclosure.

The first motor assembly 150 and the built-in motor of the present disclosure may be controlled synchronously via the same motor control board, or may be selectively controlled via the same motor control board or different motor control boards, all falling within the scope of the present disclosure.

The built-in motor of the present disclosure can be detachably fixed within the cylindrical base portion of the second stirring body 120.

Referring again to fig. 5 and 6, in some embodiments of the present disclosure, the housing 200 of the cleaning head assembly 1000 has a first motor assembly receiving part (formed of a first receiving part 2103 and a second receiving part 2203) that receives a motor control board (not shown, such as a circuit board, etc.) and a first motor 151, the motor control board and the first motor 151 being stacked with a space therebetween in the front-rear direction of the cleaning head assembly 1000 within the first motor assembly receiving part.

In some embodiments of the present disclosure, referring to fig. 5 and 6, a first housing 2103 is formed on the first housing 210, a second housing 2203 is formed on the second housing 220, and the first housing 2103 and the second housing 2203 together form the first motor assembly housing described above.

Referring to fig. 4 and 7, in some embodiments of the present disclosure, two first stirring bodies 110 are respectively driven by one first motor assembly 150, and preferably, the two first motor assemblies 150 are driven by the same motor control board synchronously or by different motor control boards.

The first motor assembly 150 includes a first motor 151 and a transmission mechanism, wherein the rotation motion output by the first motor 151 is transmitted to the first stirring body 110 via the transmission mechanism, the transmission mechanism may be a transmission mechanism based on a pulley or a gear, and a person skilled in the art selects or adjusts a specific structure of the transmission mechanism and the like according to the teachings of the present disclosure, and all of them fall within the protection scope of the present disclosure.

In some embodiments of the present disclosure, the first stirring body 110 receives the driving force of the first motor assembly 150 via the mounting end 1108.

Fig. 4 and 7 each show a second stirring body 120, which second stirring body 120 may be a roller brush or the like, e.g. a roller brush sheathed with a flexible portion.

In some embodiments of the present disclosure, the housing 200 of the cleaning head assembly 1000 of the present disclosure includes a removable cover 2102, the removable cover 2102 being removably connected to the housing 200 for at least partially covering the second stirring body 120 but not the first stirring body 110.

Fig. 5 shows the structure of the first housing 210 of the housing 200 according to an embodiment of the present disclosure, and a part of the first housing 210 (i.e., the upper housing) (i.e., the removable cover 2102) is removable (detachable) from the first housing 210, so that a user can perform a detaching operation or a cleaning operation on the second stirring body 120.

In still other embodiments of the present disclosure, referring to fig. 5, the housing 200 includes a non-removable cover 2101 for at least partially covering the first stirring body 110 but not the second stirring body 120, i.e., providing another portion of the first housing 210 as being non-removable from the first housing 210.

For the cleaning head assembly 1000 of each of the above embodiments, it is preferable to further include a cleaning unit 130, and fig. 6 shows the cleaning unit 130.

In some embodiments of the present disclosure, referring to fig. 6, a cleaning unit 130 is located between the first stirring body 110 and the second stirring body 120, the cleaning unit 130 extending along the entire length or most of the length of the surface of the second stirring body 120 and interfering with the second stirring body 120.

Through the above structural design, the second stirring body 120 of the present disclosure can be cleaned by the cleaning unit 130 in the cleaning operation, and then the dirt cleaned by the cleaning unit 130 can be stirred by the first stirring body 110 and collected to the vicinity of the free end 1109, thereby improving the cleaning effect and the cleaning efficiency of the cleaning head assembly 1000.

The present disclosure also provides a surface cleaning apparatus including a cleaning head assembly 1000 according to any of the embodiments of the present disclosure.

Among other things, the surface cleaning apparatus of the present disclosure may be a wet surface cleaning apparatus or a non-wet surface cleaning apparatus.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (13)

1. A cleaning head assembly for a surface cleaning apparatus, comprising:

a housing including a roller brush chamber and a suction port provided in the roller brush chamber; and

two first agitating bodies rotatably mounted in an opposed, depending arrangement within the roller brush chamber;

wherein two of said first agitating bodies are arranged laterally suspended within said roller brush chamber such that the longitudinal axes of the first agitating bodies during use are perpendicular or substantially perpendicular at an acute angle to the direction of movement of the cleaning head assembly;

the first stirring bodies have a mounting end and a free end, the free ends of the two first stirring bodies are oppositely arranged, a gap is formed between the free ends of the two first stirring bodies, the gap is adjacent to the suction port part, and the first stirring bodies comprise main body parts with cylindrical surfaces, so that the mounting end and the free end of the first stirring bodies have equal or basically equal diameters;

the first stirring body is provided with a spirally extending bristle row in the direction from the mounting end to the free end, the bristle row extends outwards and radially to a first radial distance from the first stirring body, and the first radial distance is sequentially reduced from the mounting end to the free end.

2. The cleaning head assembly of claim 1 wherein the first agitator body further includes a protrusion disposed on the cylindrical surface of the body portion, the protrusion extending helically in a direction from the mounting end to the free end, the row of bristles being disposed on the protrusion such that the row of bristles extends radially to a first radial distance.

3. The cleaning head assembly of claim 2 wherein the protrusion includes a base and a pair of ridges, the base and pair of ridges being arranged in series radially outward of the body portion, the row of bristles extending outward from the base, the row of bristles being disposed between the pair of ridges and the tips of the row of bristles extending from the pair of ridges.

4. The cleaning head assembly of claim 3 wherein the base has a second radial dimension and the row of bristles has a constant third radial dimension, the second radial dimension decreasing in sequence in a direction from the mounting end to the free end such that the first radial distance decreases in sequence in a direction from the mounting end to the free end.

5. The cleaning head assembly of claim 3 wherein the base has a constant second radial dimension and the rows of bristles have a third radial dimension that decreases in sequence in a direction from the mounting end to the free end such that the first radial distance decreases in sequence in a direction from the mounting end to the free end.

6. The cleaning head assembly of any one of claims 1 to 5 further comprising two first motor assemblies, each of the first agitating bodies being drivable by a respective one of the first motor assemblies.

7. The cleaning head assembly of any one of claims 1 to 5 further comprising a second agitating body mountably disposed within the housing and forward of the first agitating body.

8. The cleaning head assembly of claim 7 wherein the housing includes a non-removable cover for at least partially covering the first agitating body but not the second agitating body.

9. The cleaning head assembly of claim 8 wherein the non-removable cover includes a pair of tapered inner walls to contact outer peripheral portions of a pair of the first agitating bodies, respectively.

10. The cleaning head assembly of claim 9 wherein the pair of tapered inner walls have a junction at a location corresponding to a location of a gap between free ends of the two first agitating bodies.

11. The cleaning head assembly of claim 10 wherein the location of the junction corresponds to the location of the suction port.

12. A surface cleaning apparatus comprising a cleaning head assembly as claimed in any one of claims 1 to 11.

13. A surface cleaning apparatus as claimed in claim 12, characterised in that the surface cleaning apparatus is a wet surface cleaning apparatus or a non-wet surface cleaning apparatus.

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