WO2021253669A1

WO2021253669A1 - Floor brush assembly for cleaning device, cleaning device, and vacuum cleaner

Info

Publication number: WO2021253669A1
Application number: PCT/CN2020/117400
Authority: WO
Inventors: 卞小贤; 邢振宇; 张川; 刘越
Original assignee: 天佑电器（苏州）有限公司
Priority date: 2020-06-16
Filing date: 2020-09-24
Publication date: 2021-12-23
Also published as: CN212913060U

Abstract

A floor brush assembly (10) for a cleaning device (1) may be connected to a body unit (20) of the cleaning device (1). A first positioning part (201) is arranged on the back of the body unit (20). A plurality of first limiting parts (202) are arranged at the bottom of the body unit. The floor brush assembly (10) comprises a floor brush housing (11) and a connecting member (15). The connecting member (15) is pivotably connected to the floor brush housing (11). The connecting member (15) is provided with a second positioning part (153) and a plurality of second limiting parts (154). When the body assembly (20) is connected to the floor brush assembly (10), the second positioning part (153) engages the first positioning part (201), and the plurality of second limiting parts (154) respectively engage with the plurality of first limiting parts (202) on the basis of a one-to-one correspondence. When the body unit (20) is turned relative to the floor brush housing (11), the second positioning part (153) and the plurality of second limiting parts (154) simultaneously act on the body unit (20). By providing a plurality of second limiting parts (154), and by allowing the second positioning part (153) and the plurality of second limiting parts (154) to simultaneously act on the body unit (20), both may absorb the torque generated when the body unit (20) is turned.

Description

Floor brush assembly, cleaning equipment and vacuum cleaner for cleaning equipment

Technical field

The utility model relates to a floor brush assembly, a cleaning equipment and a vacuum cleaner for cleaning equipment, in particular to a floor brush assembly, a cleaning equipment and a vacuum cleaner for cleaning equipment which can improve the coordination stability.

Background technique

Vertical vacuum cleaners usually include a floor brush assembly as a base, a dust cup assembly as a filter and storage dust, a body assembly as a skeleton support, a handle assembly as an operation grip, and a motor assembly as a suction power, etc., handle assembly Including rods and hoses. When you need to clean above the floor, use the rods and hoses. The rods and hoses are attached to the fuselage components and form part of the air flow path inside the vertical vacuum cleaner. The incoming air needs to pass through the rods and Hose while traveling.

The existing vertical vacuum cleaner attaches the fuselage component to the floor brush assembly through the dovetail groove matching structure. The current common dovetail groove matching structure: the fuselage assembly slides into the dovetail groove of the floor brush assembly and the floor brush assembly to assemble the whole machine, except There is no other structure outside the dovetail groove to participate in the fixing of the fuselage assembly on the floor brush assembly. The torsion force generated during the twisting action of the whole machine around the floor brush assembly is all borne by the dovetail groove, and the root of the dovetail groove is prone to tearing. In addition, the amount of shaking of the fuselage component on the floor brush assembly is only determined by the matching gap between the fuselage component and the dovetail groove, and the fuselage component is prone to shaking on the floor brush assembly.

Utility model content

The utility model provides a floor brush assembly, a cleaning device and a vacuum cleaner for cleaning equipment, which can improve coordination stability.

The utility model provides a floor brush assembly for cleaning equipment, which can be connected with the body assembly of the cleaning equipment, the back of the body assembly is provided with a first positioning part, and the bottom of the body assembly is provided with A plurality of first limiting parts, the floor brush assembly includes:

Floor brush housing;

A connecting piece pivotally connected to the floor brush housing, the connecting piece is provided with a second positioning portion, and the connecting piece is provided with a plurality of second limiting portions;

Wherein, when the body assembly is connected with the floor brush assembly, the second positioning portion is matched with the first positioning portion, and the plurality of second limiting portions are connected to the plurality of first limiting portions. When the body assembly is twisted relative to the floor brush housing, the second positioning portion and the at least one second limiting portion act on the body assembly at the same time .

Optionally, the connecting member includes a first connecting member and a second connecting member, the first connecting member is pivotally connected to the floor brush housing, and the second connecting member is pivotally connected to the first connecting member Above, the second positioning portion and the second limiting portion are provided on the second connecting member.

Optionally, the second connecting member includes a longitudinal tube portion and a horizontal bearing platform, the second positioning portion extends laterally outward from the outer wall of the longitudinal tube portion, and the plurality of second limiting portions protrude upward at intervals Set on the horizontal bearing platform.

Optionally, the first positioning portion is a long and narrow guide groove, and the first positioning portion extends in a longitudinal direction, the second positioning portion is a long and narrow guide rail, and the second positioning portion extends in a longitudinal direction.

Optionally, the bottom of the elongated guide groove has an expanded opening, and the top of the elongated guide rail has a reduced end.

Optionally, the first limiting portion is a trapezoidal circular slot, and the second limiting portion is a trapezoidal cylinder. When the body assembly is connected to the floor brush assembly, the trapezoidal circular slot is sleeved in The trapezoidal cylinder.

Optionally, the connecting piece is provided with two symmetrically arranged second positioning portions, the connecting piece is provided with two symmetrically arranged second limiting portions, and the interval between the two second limiting portions is predetermined distance.

The utility model also provides a cleaning device, including the floor brush assembly for cleaning the device.

Optionally, the cleaning device includes a body assembly that is removably installed on the floor brush assembly; the cleaning device includes a handle assembly that is removably installed On the fuselage component, the handle component includes at least one of a handle, a rigid tube, or a flexible hose.

The utility model also provides a vacuum cleaner, comprising a body assembly and a floor brush assembly connectable with the body assembly, a first positioning part is provided on the back of the body assembly, and a bottom of the body assembly is provided A plurality of first limiting portions; the floor brush assembly includes a floor brush housing and a connecting piece pivotally connected to the floor brush housing, the connecting piece is provided with a second positioning portion, and the connecting piece is provided with Multiple second limiting parts;

Compared with the prior art, the present invention adds a second limiter, and the second positioner and at least one second limiter simultaneously act on the fuselage component to share the torsion force during the twisting process of the fuselage component. This improves the stability of the fit between the body component and the floor brush component, and avoids damage to the second positioning portion caused by only the second positioning portion bearing the torsion force during the twisting process of the fuselage component. The utility model is provided with a second positioning part extending laterally outward from the outer wall of the longitudinal pipe part, and a plurality of second limiting parts are arranged to protrude upward on the horizontal bearing platform at intervals, when the body assembly is moved from above the floor brush assembly When sliding in and positioning, the process of sliding in the fuselage component in the direction of gravity continuously completes the cooperation of the first positioning part and the second positioning part, and the cooperation of the first limit part and the second limit part. The machine can be realized in one operation. The positioning of the body components is convenient for the user's operation. The bottom of the long and narrow guide groove of the present invention has an expanded opening, and the top of the long and narrow guide rail has a reduced end, which is beneficial to the alignment of the body assembly on the floor brush assembly. In the utility model, the first limiting part is set into a trapezoidal circular groove, and the second limiting part is set into a trapezoidal cylinder. The gap between the trapezoidal circular groove and the trapezoidal cylinder is changed from large to small, which is advantageous for sliding in and positioning and crashes. After the body assembly is completely positioned on the floor brush assembly, the gap between the trapezoidal circular groove and the trapezoidal cylinder is small enough to prevent the body assembly from shaking on the floor brush assembly. In the utility model, a predetermined distance is provided between the two second limiting parts, so that a relatively large distance between the second limiting parts is maintained, which is beneficial to ensure the torsion resistance effect of the fuselage assembly during the torsion process.

Description of the drawings

Figure 1 is a schematic diagram of the body assembly of the cleaning device of the present invention moving upward after being unlocked from the floor brush assembly;

Figure 2 is a schematic diagram of the body assembly of the cleaning device of the utility model being locked on the floor brush assembly;

Figure 3 is a schematic diagram of the structure of the floor brush assembly of the utility model;

Figure 4 is an exploded schematic diagram of the connecting piece in the floor brush assembly of the utility model;

Figure 5 is a use state diagram of the fuselage assembly and the handle assembly of the cleaning device of the utility model being twisted back and forth;

Fig. 6 is an enlarged schematic diagram of area A in Fig. 5;

Figure 7 is a use state diagram of the fuselage assembly and the handle assembly of the cleaning device of the present invention twisted left and right;

Figure 8 is a top view of the fuselage assembly in the cleaning device of the present invention.

detailed description

In the following, the utility model will be further described in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the present utility model, but not to limit the present utility model. In addition, it should be noted that, for ease of description, the drawings only show a part of the structure related to the present utility model, but not all of the structure.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise" and other directions or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation Therefore, it cannot be understood as a limitation of the present utility model.

In the description of the present invention, "multiple" means at least one, such as one, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediary, and it can be a connection within an element or an interaction relationship between an element. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present utility model can be understood according to specific conditions.

In the present utility model, unless otherwise clearly defined and defined, the "on" or "under" of the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features. The features are not in direct contact but through other features between them. Moreover, the "above", "above" and "above" the first feature on the second feature includes the first feature directly above and obliquely above the second feature, or only means that the first feature is higher in level than the second feature. The “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

Please refer to Figures 1 to 8, the present invention provides a floor brush assembly 10 for cleaning equipment, which can be connected to the body assembly 20 of the cleaning device 1, and the back of the body assembly 20 is provided with The first positioning portion 201 is provided with a plurality of first limiting portions 202 at the bottom of the fuselage assembly, and the floor brush assembly 10 includes:

Floor brush housing 11;

The connecting member 15 is pivotally connected to the floor brush housing 11, the connecting member 15 is provided with a second positioning portion 153, and the connecting member 15 is provided with a plurality of second limiting portions 154;

Wherein, when the body assembly 20 is connected to the floor brush assembly 10, the second positioning portion 153 cooperates with the first positioning portion 201, and the plurality of second limiting portions 154 are connected to the plurality of The first limiting portions 202 correspond one-to-one and are respectively matched; when the body assembly 20 is twisted relative to the floor brush housing 11, the second positioning portion 153 and the at least one second limiting portion 154 acts on the fuselage assembly 20 at the same time.

The utility model adds a second limiting portion 154, and the second positioning portion 153 and at least one second limiting portion 154 act on the fuselage assembly 20 at the same time, so as to share the torsion force of the fuselage assembly 20 during the twisting process. The second positioning portion 153 and the second limiting portion 154 act on different areas of the fuselage assembly 20. When the fuselage assembly 20 is twisted on the floor brush assembly 10, the second positioning portion 153 interacts with The two second limit parts 154 form a torsion resistant combination to share the torsion of the fuselage assembly 20. Different torsion directions will form different torsion resistance combinations, which improves the stability of the fit between the fuselage assembly 20 and the floor brush assembly 10 sex.

In another embodiment of the present invention, the connecting member 15 includes a first connecting member 151 and a second connecting member 152, the first connecting member 151 is pivotally connected to the floor brush housing 11, and the first connecting member 151 The two connecting members 152 are pivotally connected to the first connecting member 151, and the second positioning portion 153 and the second limiting portion 154 are provided on the second connecting member 152. In the present invention, the first connecting member 151 is pivotally connected to the floor brush housing 11 through a pivot 16, and the connecting member 15 together with the body assembly 20 can be twisted back and forth relative to the floor brush housing 11. According to the present invention, the cylindrical pivot portion 158 on the second connecting piece 152 is sleeved in the cylindrical pivot hole 157 on the first connecting piece 151 so that the second connecting piece 152 and the fuselage assembly 20 are relative to each other. The first connecting member 151 is twisted left and right; thus, the twisting of the body assembly 20 on the floor brush assembly 10 is realized.

In another embodiment of the present invention, the second connecting member 152 includes a longitudinal pipe portion 155 and a horizontal bearing platform 156, and the second positioning portion 153 extends laterally outward from the outer wall of the longitudinal pipe portion 155, The plurality of second limiting portions 154 protrude upwardly on the horizontal carrying platform 156 at intervals. The utility model is provided with a second positioning portion 153 extending laterally outward from the outer wall of the longitudinal tube portion 155, and a plurality of second limiting portions 154 are arranged to protrude upward on the horizontal bearing platform 156 at intervals. When the fuselage assembly 20 is removed from When the floor brush assembly 10 is slid in and positioned from above, the process of sliding in the body assembly 20 in the direction of gravity continuously completes the coordination of the first positioning portion 201 and the second positioning portion 153, as well as the first limiting portion 202 and the second limiting portion With the cooperation of the part 154, the positioning of the body assembly 20 can be realized in one operation, which is convenient for the user's operation.

In another embodiment of the present invention, the first positioning portion 201 is a long and narrow guide groove, and the first positioning portion 201 extends in the longitudinal direction, the second positioning portion 153 is a long and narrow guide rail, and the second positioning portion 153 is a long and narrow guide rail. The second positioning portion 153 extends in the longitudinal direction.

In another embodiment of the present invention, the bottom of the long and narrow guide groove has an expanded opening, and the top of the long and narrow rail has a narrowed end. For example, the top of the long and narrow guide has a dovetail structure. The utility model sets the gap between the opening and the end to be larger, which is beneficial to the alignment of the body assembly on the floor brush assembly. The utility model sets the matching gap between the part other than the opening on the narrow guide groove and the part other than the upper end of the narrow guide rail to be small, and only needs to be easily slid in, thereby inhibiting the body assembly 20 from being on the floor brush assembly 10 The shaking.

In another embodiment of the present invention, the first limiting portion 202 is a trapezoidal circular groove, and the second limiting portion 154 is a trapezoidal cylinder. When the body assembly 20 and the floor brush assembly 10 When connecting, the trapezoidal circular groove is sleeved on the trapezoidal cylinder. In the utility model, when the fuselage assembly 20 is installed in the floor brush assembly 10, the gap between the trapezoidal circular groove and the trapezoidal cylinder is changed from large to small, which facilitates sliding in and positioning, and when the fuselage assembly 20 is completely positioned on the floor brush assembly After 10, the gap between the trapezoidal circular groove and the trapezoidal cylinder is small enough. For example, the fully positioned trapezoidal circular groove and the trapezoidal cylinder can be contacted and matched, which is beneficial to restrain the body assembly 20 from shaking on the floor brush assembly 10.

In another embodiment of the present invention, the connecting member 15 is provided with two symmetrically arranged second positioning portions 153, and the connecting member 15 is provided with two symmetrically arranged second limiting portions 154, and two The second limiting portions 154 are separated by a predetermined distance. In the utility model, a predetermined distance is provided between the two second limiting portions 154 to maintain a relatively large distance between the second limiting portions 154, which is beneficial to ensure the torsion resistance effect of the fuselage assembly during the torsion process.

In another embodiment of the present invention, the second limiting portion 154 includes an upper cover and a lower cover, wherein the lower cover is pivotally connected to the first connecting member 151, and the upper cover is connected to the The lower cover is locked by screws, and an accommodating space is enclosed between the upper cover and the lower cover for accommodating circuit components. The second limiting portion 154 is a trapezoidal cylinder, and the trapezoidal cylinder is provided with a lock hole. The lock hole and the second limiting portion 154 are arranged at the same position, which is beneficial to simplify the structural layout of the connecting member 15.

The utility model also provides a cleaning device 1 including the floor brush assembly 10 described above. The cleaning device 1 may be a vertical vacuum cleaner, or a vacuum cleaner in which the body assembly 20 is twisted on the floor brush assembly 10 during use; the cleaning device 1 further includes a body assembly 20, which can be Removably installed on the floor brush assembly 10. The cleaning device 1 further includes a handle assembly 30, and the handle assembly 30 is removably installed on the body assembly 20. The body assembly 20 and the handle assembly 30 can be attached to or removed from the floor brush assembly 10 according to different cleaning modes.

In another embodiment of the present invention, the handle assembly 30 includes at least one of a handle 31, a rigid tube 32 or a flexible hose 33 to facilitate hand-held operation. When the handle assembly 30 also includes a handle 31 , For the hard tube 32 and the flexible hose 33, one or more of them can be selected according to different cleaning modes. The hard tube 32 is provided with a locking mechanism, and the handle assembly 30 can be locked on the body assembly 20 by the locking mechanism. The hard tube 32 provides an air flow channel, and when the handle assembly 30 is in the locked state, the hard tube 32 One end of is plug-fitted with the floor brush assembly 10. According to different cleaning modes, select the part of the floor brush assembly 10 or the handle assembly 30 as the air inlet. For example, in the floor cleaning mode, the body assembly 20 and the handle assembly 30 are both installed to the floor brush assembly 10, and the air flow is from the floor brush assembly 10. Enter the bottom of the, flow through the hard tube 32, the flexible hose 33, and then enter the fuselage assembly 20 to filter; and in the off-ground cleaning mode, the fuselage assembly 20 and the handle assembly 30 can be removed from the floor brush assembly 10 at the same time, and then Unlock the handle assembly 30 from the fuselage assembly 20. The unlocked fuselage assembly 20 can be worn by hand, worn as a backpack or placed on the floor. The user operates the handle assembly 30 against furniture, walls, curtains, and others. The object is cleaned, and the airflow enters from the end of the hard tube 32, flows through the flexible hose 33, and enters the fuselage assembly 20 for filtration. In addition, the hard tube 32 and the handle 31 can also be removed from the handle assembly 30, leaving only the flexible hose 33, and the airflow enters the fuselage assembly 20 from the end of the flexible hose 33 to be filtered.

The present invention also provides a vacuum cleaner, which includes a body assembly 20 and a floor brush assembly 10 that can be connected to the body assembly 20,

The back of the fuselage assembly 20 is provided with a first positioning portion 201, and the bottom of the fuselage assembly 20 is provided with a plurality of first limiting portions 202;

The floor brush assembly 10 includes a floor brush housing 11 and a connecting piece 15 pivotally connected to the floor brush housing 11. The connecting piece 15 is provided with a second positioning portion 153, and the connecting piece 15 is provided with a plurality of A second limit part 154;

In summary, the present invention adds a second limiting portion, and the second positioning portion and at least one second limiting portion simultaneously act on the fuselage component to share the torsion force during the twisting process of the fuselage component. The stability of the fit between the fuselage component and the floor brush component avoids damage to the second positioning portion caused by only the second positioning portion bearing the torsion force during the twisting process of the fuselage component. The utility model is provided with a second positioning part extending laterally outward from the outer wall of the longitudinal pipe part, and a plurality of second limiting parts are arranged to protrude upward on the horizontal bearing platform at intervals. When the body assembly is moved from above the floor brush assembly When sliding in and positioning, the process of sliding in the fuselage component in the direction of gravity continuously completes the cooperation of the first positioning part and the second positioning part, and the cooperation of the first limit part and the second limit part. The machine can be realized in one operation. The positioning of the body components is convenient for the user's operation. The bottom of the long and narrow guide groove of the utility model has an expanded opening, and the top of the long and narrow guide rail has a reduced end, which is beneficial to the alignment of the body assembly on the floor brush assembly. In the utility model, the first limiting part is set into a trapezoidal circular groove, and the second limiting part is set into a trapezoidal cylinder. The gap between the trapezoidal circular groove and the trapezoidal cylinder is changed from large to small, which is advantageous for sliding in and positioning and crashes. After the body assembly is completely positioned on the floor brush assembly, the gap between the trapezoidal circular groove and the trapezoidal cylinder is small enough to help restrain the body assembly from shaking on the floor brush assembly. In the utility model, a predetermined distance is provided between the two second limiting portions, so that a relatively large distance between the second limiting portions is maintained, which is beneficial to ensure the torsion resistance effect of the fuselage assembly during the torsion process.

Note that the above are only the preferred embodiments of the present invention and the applied technical principles. Those skilled in the art will understand that the present utility model is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made to those skilled in the art without departing from the protection scope of the present utility model. Therefore, although the present utility model has been described in more detail through the above embodiments, the present utility model is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present utility model. The scope of the present invention is determined by the scope of the appended claims.

Claims

A floor brush assembly (10) for cleaning equipment, which can be connected to the body assembly (20) of the cleaning equipment, characterized in that the back of the body assembly (20) is provided with a first positioning portion ( 201), the bottom of the fuselage assembly (20) is provided with a plurality of first limiting portions (202), and the floor brush assembly (10) includes:

Floor brush housing (11);

The connecting piece (15) is pivotally connected to the floor brush housing (11), the connecting piece (15) is provided with a second positioning portion (153), and the connecting piece (15) is provided with a plurality of second positioning parts (153). Second limit part (154);

Wherein, when the body assembly (20) is connected to the floor brush assembly (10), the second positioning portion (153) is matched with the first positioning portion (201), and the plurality of second The limiting portion (154) corresponds to the plurality of first limiting portions (202) one-to-one and respectively cooperates; when the body assembly (20) is twisted relative to the floor brush housing (11), the The second positioning portion (153) and the at least one second limiting portion (154) simultaneously act on the fuselage assembly (20).
The floor brush assembly (10) for cleaning equipment according to claim 1, wherein the connecting member (15) comprises a first connecting member (151) and a second connecting member (152), and the first connecting member (151) and the second connecting member (152) A connecting piece (151) is pivotally connected to the floor brush housing (11), the second connecting piece (152) is pivoted to the first connecting piece (151), and the second positioning portion (153) ) And the second limiting portion (154) are arranged on the second connecting member (152).
The floor brush assembly (10) for cleaning equipment according to claim 2, characterized in that: the second connecting member (152) includes a longitudinal pipe portion (155) and a horizontal bearing platform (156), and the first Two positioning portions (153) extend laterally outward from the outer wall of the longitudinal tube portion (155), and the plurality of second limiting portions (154) are protruded upwardly on the horizontal bearing platform (156) at intervals.
The floor brush assembly (10) for cleaning equipment according to claim 3, characterized in that: the first positioning portion (201) is a long and narrow guide groove, and the first positioning portion (201) extends longitudinally The second positioning portion (153) is a long and narrow rail, and the second positioning portion (153) extends longitudinally.
The floor brush assembly (10) for cleaning equipment according to claim 4, wherein the bottom of the elongated guide groove has an expanded opening, and the top of the elongated guide rail has a reduced end.
The floor brush assembly (10) for cleaning equipment according to claim 1, wherein the first limiting portion (202) is a trapezoidal circular groove, and the second limiting portion (154) is a trapezoid. A cylinder, when the body assembly (20) is connected with the floor brush assembly (10), the trapezoidal circular groove is sleeved on the trapezoidal cylinder.
The floor brush assembly (10) for cleaning equipment according to claim 1, characterized in that: the connecting piece (15) is provided with two symmetrically arranged second positioning portions (153), and the connecting piece ( 15) Two second limiting portions (154) arranged symmetrically are provided, and the two second limiting portions (154) are separated by a predetermined distance.
A cleaning equipment (1), characterized by comprising the floor brush assembly (10) for cleaning equipment according to any one of claims 1 to 7.
The cleaning device (1) according to claim 8, characterized in that: the cleaning device (1) comprises a body assembly (20), and the body assembly (20) is removably installed on the ground Brush assembly (10); the cleaning device (1) includes a handle assembly (30), the handle assembly (30) is removably installed on the body assembly (20), the handle assembly ( 30) includes at least one of a handle (31), a rigid tube (32), or a flexible hose (33).
A vacuum cleaner, comprising a body component (20) and a floor brush component (10) connectable with the body component (20), characterized in that:

The back of the fuselage assembly (20) is provided with a first positioning portion (201), and the bottom of the fuselage assembly (20) is provided with a plurality of first limiting portions (202);

The floor brush assembly (10) includes a floor brush housing (11) and a connecting piece (15) pivotally connected to the floor brush housing (11), and the connecting piece (15) is provided with a second positioning portion (153), the connecting piece (15) is provided with a plurality of second limiting portions (154);

Wherein, when the body assembly (20) is connected to the floor brush assembly (10), the second positioning portion (153) is matched with the first positioning portion (201), and the plurality of second The limiting portion (154) corresponds to the plurality of first limiting portions (202) one-to-one and respectively cooperates; when the body assembly (20) is twisted relative to the floor brush housing (11), the The second positioning portion (153) and the at least one second limiting portion (154) simultaneously act on the fuselage assembly (20).