CN218515708U - Scrubbing brush subassembly and scrubber - Google Patents

Abstract

The utility model discloses a scrubbing brush subassembly and floor cleaning machine, the scrubbing brush subassembly includes casing, driving piece, round brush, end cover and locking piece, be equipped with connecting portion on the casing, the driving piece is installed on the casing, end cover detachably installs on the casing, the both ends of round brush link to each other with driving piece and end cover respectively to can end cover rotation relatively, locking piece swing joint is in the end cover, be equipped with spacing portion on the locking piece, the locking piece is portable between primary importance and second place, at primary importance, spacing portion cooperates in order to lock the end cover with connecting portion, at the second place, connecting portion are kept away from to spacing portion. The limiting part of the locking block is matched with the connecting part of the shell, so that the end cover is locked on the shell, and the reliability of assembly between the end cover and the shell is improved. And, move between primary importance and second place through the locking piece, alright realize the locking and the unblock to the end cover to improve the installation of end cover and the convenience of dismantling, and then be convenient for wash and overhaul the round brush.

Description

Scrubbing brush subassembly and scrubber

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a ground brush subassembly and floor cleaning machine.

Background

A floor washing machine is a mechanical device that can replace a manual cleaning work, and originally, the floor washing machine is widely used in the business and service industries. With the development of technology, more and more floor washers are also widely used in household cleaning work. The floor washing machine needs to be cleaned and replaced frequently after being used for a long time. However, in the related art, the end cover is connected with the casing through bolts to assemble the rolling brush in the casing, and there is a disadvantage that the rolling brush is inconvenient to detach, replace and maintain in design, so there is still a need for improvement in the installation and arrangement manner of the rolling brush in the related art.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the embodiment of the utility model provides a ground brush subassembly, the installation of round brush and dismantlement are simple and convenient, the easy access.

The embodiment of the utility model also provides a floor cleaning machine.

The utility model discloses scrubbing brush subassembly includes: casing, driving piece, round brush, end cover and locking piece, be equipped with connecting portion on the casing, the driving piece is installed on the casing, the first end of round brush with the driving piece transmission is connected, end cover detachably installs on the casing, the second end of round brush with the end cover is connected, and can be relative the end cover rotates, locking piece swing joint in the end cover, be equipped with spacing portion on the locking piece, the locking piece is portable between primary importance and second place the primary importance, spacing portion with connecting portion cooperate with will the end cover locking the second place, connecting portion are kept away from to spacing portion.

The utility model discloses scrubbing brush subassembly, the connecting portion through spacing portion and the casing of locking piece mutually support to with the end cover locking on the casing, improve the reliability of assembling between end cover and the casing. And, move between primary importance and second place through the locking piece, alright realize the locking and the unblock to the end cover to improve the installation of end cover and the convenience of dismantling, and then be convenient for wash and overhaul the round brush.

In some embodiments, the end cap has a receiving cavity, the locking block is movably disposed in the receiving cavity, the end cap further has an opening for communicating the receiving cavity with the outside, and the position-limiting portion can pass through the opening to be engaged with the connecting portion, or the connecting portion can pass through the opening to be engaged with the position-limiting portion.

In some embodiments, a first groove is formed in one end, close to the end cover, of the shell, a protrusion matched with the first groove is formed in the end cover, the connecting portion is arranged on a groove wall of the first groove and extends downwards, the locking block is slidably arranged in the accommodating cavity along the vertical direction, the limiting portion is arranged at the upper end of the locking block and extends upwards, the limiting portion penetrates through the opening and is clamped with the connecting portion at the first position, and the limiting portion is located on one side, away from the end cover, of the connecting portion.

In some embodiments, the locking device further comprises an unlocking piece which is movably connected to the end cover, and at least part of the unlocking piece is in contact with the locking block to drive the locking block to move from the first position to the second position.

In some embodiments, the unlocking piece is rotatably installed on the end cover, the lower end of the unlocking piece is provided with an abutting portion, one side, adjacent to the unlocking piece, of the locking block is provided with an inclined surface, the inclined surface is inclined from top to bottom in the direction from the first end to the second end of the rolling brush, and the abutting portion can rotate along with the unlocking piece and abut against the inclined surface to drive the locking block to slide downwards.

In some embodiments, the locking device further comprises a return spring, a convex column is arranged on the lower end face of the locking block, the upper end of the return spring is sleeved on the convex column and abuts against the lower end face of the locking block, and the lower end of the return spring abuts against the bottom of the accommodating cavity.

In some embodiments, the unlocking piece comprises a vertical plate section and a horizontal plate section which are connected, an included angle is formed between the vertical plate section and the horizontal plate section, the first end of the vertical plate section is hinged to the end cover, the second end of the vertical plate section is connected to the horizontal plate section, and the abutting portion is connected to the first end of the vertical plate section.

In some embodiments, the end cap is provided with a second groove, the housing is provided with a third groove communicated with the second groove, in the first position, the vertical plate section is located in the second groove, one part of the horizontal plate section is located in the second groove, and the other part of the horizontal plate section is located in the third groove.

In some embodiments, the outer edge of the cross plate section is in a smooth arc shape, a side wall plate extending downwards is arranged at the outer edge of the cross plate section, and the height of the side wall plate is equal to the depth of the third groove.

The utility model discloses floor cleaning machine, including above-mentioned arbitrary embodiment the scrubbing brush subassembly.

The utility model discloses floor cleaning machine has the installation of round brush, dismantles convenient characteristics, easy access.

Drawings

Fig. 1 is a schematic view of a floor brush assembly according to an embodiment of the present invention.

Fig. 2 is a schematic view of a locking block of a floor brush assembly in a first position according to an embodiment of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic view of the locking block of the floor brush assembly in a second position according to the embodiment of the present invention.

Fig. 5 is an enlarged schematic view of a portion B in fig. 4.

Fig. 6 is a schematic view of a locking block of a floor brush assembly according to an embodiment of the present invention.

Fig. 7 is a schematic view of the floor brush assembly of the embodiment of the present invention after removing the end cap.

Figure 8 is a schematic view of an end cap of a floor brush assembly according to an embodiment of the present invention.

Figure 9 is a schematic view of an unlocking member of a floor brush assembly according to an embodiment of the present invention.

Fig. 10 is a schematic top view of a floor brush assembly according to an embodiment of the present invention.

Fig. 11 isbase:Sub>A schematic cross-sectional view ofbase:Sub>A-base:Sub>A in fig. 10.

Fig. 12 is a schematic view of a driving member and a roll brush of a floor brush assembly according to an embodiment of the present invention.

Reference numerals:

the shell 1, the connecting part 11, the first groove 101, the third groove 102, the clamping groove 103,

A driving part 2,

A rolling brush 3, a brush cylinder 31, a first connecting piece 32, a second connecting piece 33,

End cap 4, protrusion 41, buckle 42, accommodation cavity 401, second groove 402,

A locking block 5, a limiting part 51, a convex column 52, a bevel 501,

An unlocking piece 6, an abutting part 61, a vertical plate section 62, a transverse plate section 63, a side wall plate 64,

A return spring 7.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The following describes the floor brush assembly according to the embodiment of the present invention with reference to the drawings.

As shown in fig. 1 to 12, the floor brush assembly of the embodiment of the present invention comprises: the device comprises a shell 1, a driving piece 2, a rolling brush 3, an end cover 4 and a locking block 5. Be equipped with connecting portion 11 on the casing 1, driving piece 2 is installed on casing 1, and the first end and the driving piece 2 transmission of round brush 3 are connected. The end cap 4 is detachably mounted on the housing 1, and the second end of the roll brush 3 is connected with the end cap 4 and can rotate relative to the end cap 4. Locking piece 5 swing joint is in end cover 4, is equipped with spacing portion 51 on locking piece 5, and locking piece 5 is portable between primary importance and second position, and at the primary importance, spacing portion 51 cooperates with connecting portion 11 in order to keep away from connecting portion 11 with end cover 4 locking, at the second position, spacing portion 51.

Alternatively, as shown in fig. 10 to 12, the driver 2 is mounted at the rear end of the housing 1, and the end cap 4 is mounted at the front end of the housing 1. The round brush 3 sets up along the fore-and-aft direction, and the rear end and the 2 transmission of driving piece of round brush 3 are connected, and the front end and the end cover 4 of round brush 3 rotationally are connected, and round brush 3 rotates along self central axis.

Further, as shown in fig. 10 to 12, the roll brush 3 includes a brush cylinder 31, a first connector 32, and a second connector 33, the first connector 32 being fitted to a rear end of the brush cylinder 31, and the second connector 33 being fitted to a front end of the brush cylinder 31. The drive member 2 is keyed to the first connector 32 to drive the brush drum 31 in rotation. The second connecting member 33 is connected to the end cap 4 through a rotating shaft, the second connecting member 33 is rotatably sleeved on the rear end of the rotating shaft, and the end cap 4 is rotatably sleeved on the front end of the rotating shaft, so that the brush barrel 31 can rotate relative to the end cap 4.

It will be appreciated that the end cap 4 is removably mounted to the housing 1, and that the roll brush 3 can be removed and replaced by removing the end cap 4. For example, as shown in fig. 7 and 8, the housing 1 has a locking groove 103 on the upper surface thereof, the cap 4 has an upper protrusion on the upper end thereof, the upper protrusion has a catch 42 on the lower surface thereof, and the cap 4 has a lower protrusion on the lower end thereof. As shown in fig. 1, the end cap 4 is mounted at the front end of the housing 1, the latch 42 is fitted in the slot 103, the upper protruding portion of the end cap 4 is attached to the upper surface of the housing 1, and the lower protruding portion of the end cap 4 is attached to the lower surface of the housing 1, so that the end cap 4 is connected to the latch 42 of the housing 1, and the up-and-down movement of the end cap 4 relative to the housing 1 is restricted. At this time, if the end cap 4 needs to be detached from the housing 1, the end cap 4 can be pulled off by applying upward and forward forces to the end cap 4.

Thus, if the end cap 4 is to be locked to the housing 1, the end cap 4 is restricted from moving forward relative to the housing 1. Therefore, as shown in fig. 1 to 6, the housing 1 is provided with the connecting portion 11, the end cap 4 is provided with the lock block 5, and the lock block 5 is provided with the stopper portion 51. The stopper portion 51 and the connecting portion 11 cooperate with each other to restrict the end cap 4 from moving forward relative to the housing 1.

For example, as shown in fig. 3, when the locking block 5 is in the first position, the limiting portion 51 of the locking block 5 and the connecting portion 11 of the housing 1 are engaged with each other, so that the locking block 5 locks the end cap 4 on the housing 1. As shown in fig. 5, when the lock block 5 is in the second position, the position-limiting portion 51 of the lock block 5 is disengaged from the connecting portion 11 of the housing 1, so that the lock block 5 unlocks the end cap 4.

Therefore, the utility model discloses the scrubbing brush subassembly, spacing portion 51 through locking piece 5 and the connecting portion 11 of casing 1 mutually support to with end cover 4 locking on casing 1, improve the reliability of assembling between end cover 4 and the casing 1. And, through locking piece 5 removes between primary importance and second place, alright realization is to the locking and the unblock of end cover 4 to improve the convenience of the installation and the dismantlement of end cover 4, and then be convenient for wash and overhaul round brush 3.

In some embodiments, as shown in fig. 1 to 5, the end cap 4 has a receiving cavity 401, the locking block 5 is movably disposed in the receiving cavity 401, an opening is further disposed on the end cap 4 for communicating the receiving cavity 401 with the outside, the position-limiting portion 51 can be engaged with the connecting portion 11 through the opening, or the connecting portion 11 can be engaged with the position-limiting portion 51 through the opening.

It can be understood that the limiting portion 51 can be matched with the connecting portion 11 through the opening, that is, the connecting portion 11 is located outside the accommodating cavity 401, and the limiting portion 51 can be matched with the connecting portion 11 only after passing through the opening and being located outside the accommodating cavity 401. Or, the connecting portion 11 may pass through the opening to be matched with the limiting portion 51, that is, the connecting portion 11 and the limiting portion 51 are both located in the accommodating cavity 401, and the connecting portion 11 and the limiting portion 51 may be matched in the accommodating cavity 401.

Specifically, as shown in fig. 3, the connecting portion 11 is located outside the accommodating cavity 401, the limiting portion 51 passes through the opening and is located outside the accommodating cavity 401, and the limiting portion 51 and the connecting portion 11 are matched with each other.

In some embodiments, as shown in fig. 1 to 8, one end of the housing 1 adjacent to the end cover 4 is provided with a first groove 101, the end cover 4 is provided with a protrusion 41 matching with the first groove 101, and the connecting portion 11 is provided on a groove wall of the first groove 101 and extends downward. The locking block 5 is slidably disposed in the accommodating chamber 401 along the vertical direction, and the limiting portion 51 is disposed at the upper end of the locking block 5 and extends upward. In the first position, the limiting part 51 passes through the opening to be clamped with the connecting part 11, and the limiting part 51 is positioned on one side of the connecting part 11, which is far away from the end cover 4.

Alternatively, as shown in fig. 7 and 8, the front end of the housing 1 is provided with a first groove 101, and the lower protruding portion of the end cap 4 is provided with a protrusion 41. When the end cap 4 is mounted on the housing 1, the projection 41 is fitted in the first groove 101. The connecting portion 11 is disposed on the groove wall of the first groove 101 and extends downward, and the connecting portion 11 is spaced from the groove bottom of the first groove 101, so that the position-limiting portion 51 of the locking block 5 is inserted between the connecting portion 11 and the groove bottom of the first groove 101, thereby the position-limiting portion 51 and the connecting portion 11 are engaged with each other.

Alternatively, as shown in fig. 1 to 6, the limiting portion 51 is disposed at the upper end of the locking block 5 and extends upward, and the locking block 5 is slidably disposed in the accommodating chamber 401 when being laid down vertically. When the locking block 5 is in the first position, the limiting portion 51 passes through the opening and is located outside the accommodating cavity 401, and at this time, the limiting portion 51 is located at the rear side of the connecting portion 11, so that the effect of limiting the end cover 4 to move forward relative to the housing 1 is achieved, and the end cover 4 is locked on the housing 1.

In some embodiments, as shown in fig. 1 to 9, the locking device further includes an unlocking member 6, the unlocking member 6 is movably connected to the end cover 4, and at least a portion of the unlocking member 6 contacts the locking block 5 to move the locking block 5 from the first position to the second position.

It can be understood that, through removing unlocking piece 6 to make unlocking piece 6 offset with locking piece 5, and then drive locking piece 5 and remove to the second position by the primary importance, realize the unblock to end cover 4.

In some embodiments, as shown in fig. 1 to 9, the unlocking member 6 is rotatably mounted on the end cover 4, the lower end of the unlocking member 6 is provided with an abutting portion 61, one side of the locking block 5 adjacent to the unlocking member 6 is provided with an inclined surface 501, the inclined surface 501 is inclined from top to bottom in a direction from the first end to the second end of the rolling brush 3, and the abutting portion 61 can rotate with the unlocking member 6 and abut against the inclined surface 501 to drive the locking block 5 to slide downward.

Alternatively, as shown in fig. 1 and 9, the lower portion of the unlocking member 6 is provided with a rotating shaft arranged along the left-right direction, and the rotating shaft is rotatably connected to the end cover 4, so that the unlocking member 6 can be turned over up and down. The lower end of the locking block 5 is provided with an abutting part 61, and the abutting part 61 is positioned below the rotating shaft of the unlocking piece 6.

Alternatively, as shown in fig. 1 to 6, the front side of the lock block 5 is provided with a slope 501, and the rear end of the slope 501 is located above the front end of the slope 501, that is, the slope 501 is inclined downward in the direction from the rear to the front.

It can be understood that, as shown in fig. 3 and 5, after the unlocking piece 6 is deflected to make the abutting portion 61 of the unlocking piece 6 contact with the inclined surface 501, the unlocking piece 6 continues to be deflected, the abutting portion 61 of the unlocking piece 6 slides on the inclined surface 501 of the locking block 5, and the abutting portion 61 drives the locking block 5 to move downward, so that the limiting portion 51 is disengaged from the connecting portion 11, and the end cover 4 is unlocked.

In some embodiments, as shown in fig. 2 to fig. 6, the locking device further includes a return spring 7, a protruding pillar 52 is disposed on a lower end surface of the locking block 5, an upper end of the return spring 7 is sleeved on the protruding pillar 52 and abuts against the lower end surface of the locking block 5, and a lower end of the return spring 7 abuts against a bottom of the accommodating cavity 401.

Optionally, as shown in fig. 2 to 6, the return spring 7 is located in the accommodating chamber 401, the return spring 7 is disposed along the up-down direction, the return spring 7 is disposed between the locking block 5 and the bottom of the accommodating chamber 401, the upper end of the return spring 7 abuts against the lower end face of the locking block 5, and the lower end of the return spring 7 abuts against the bottom of the accommodating chamber 401.

It can be understood that the stopper portion 51 of the lock block 5 is always engaged with the coupling portion 11 of the housing 1 by the return spring 7 without applying an external force to the lock block 5. When the downward force applied to the locking block 5 by the unlocking piece 6 is greater than the elastic force of the return spring 7, the unlocking piece 6 drives the locking block 5 to move downward, so that the end cover 4 is unlocked.

Further, as shown in fig. 2 to 6, a boss 52 is disposed on a lower end surface of the locking block 5, and an upper end of the return spring 7 is sleeved on the boss 52 to stabilize the return spring 7.

In some embodiments, as shown in fig. 1-9, the unlocking member 6 comprises a vertical plate segment 62 and a horizontal plate segment 63 connected together, the vertical plate segment 62 and the horizontal plate segment 63 having an included angle therebetween, a first end of the vertical plate segment 62 is hinged to the end cap 4, a second end of the vertical plate segment 62 is connected to the horizontal plate segment 63, and the abutment 61 is connected to the first end of the vertical plate segment 62.

Alternatively, as shown in fig. 9, the included angle between the riser segment 62 and the cross plate segment 63 is 90 °. The lower end of the vertical plate section 62 is provided with a rotating shaft arranged along the left-right direction so that the lower end of the vertical plate section 62 is hinged with the end cover 4. The upper end of the vertical plate section 62 is connected to the front end of the horizontal plate section 63, and the abutting portion 61 is provided on the lower end surface of the vertical plate section 62.

In some embodiments, as shown in fig. 1 to 8, the end cap 4 is provided with a second groove 402, and the housing 1 is provided with a third groove 102 communicating with the second groove 402. In the first position, the vertical plate segment 62 is positioned within the second groove 402, a portion of the horizontal plate segment 63 is positioned within the second groove 402, and another portion of the horizontal plate segment 63 is positioned within the third groove 102.

Alternatively, as shown in fig. 1, the upper portion of the end cap 4 is provided with a second groove 402, the upper surface of the housing 1 is provided with a third groove 102, and the upper end of the second groove 402 is communicated with the front end of the third groove 102. The hinged position of the vertical plate section 62 and the end cover 4 is located in the second groove 402, and the lower end of the second groove 402 is further communicated with the accommodating cavity 401, so that the abutting part 61 of the unlocking part 6 enters the accommodating cavity 401 and abuts against the inclined surface 501 of the locking block 5.

It will be appreciated that when the locking block 5 is in the first position, the upright plate sections 62 are each located within the second groove 402, the front of the cross plate section 63 is located within the second groove 402, and the middle rear of the cross plate section 63 is located within the third groove 102.

In some embodiments, as shown in fig. 1-9, the outer edge of the cross plate section 63 is smoothly curved, and the outer edge of the cross plate section 63 is provided with a side enclosing plate 64 extending downwards, and the height of the side enclosing plate 64 is equal to the depth of the third groove 102.

Alternatively, as shown in figures 1 and 9, the outer edges of the cross plate segments 63 are smoothly arcuate and the cross-sectional shape of the third groove 102 matches the shape of the outer edges of the cross plate segments 63. The cross-sectional shape of the side gusset 64 matches the cross-sectional shape of the third groove 102, and the height of the side gusset 64 in the up-down direction is equal to the depth of the third groove 102.

It can be understood that, when the locking block 5 is in the first position, the unlocking piece 6 is buckled in the second groove 402 and the third groove 102, and the hidden design of the unlocking piece 6 not only embodies the aesthetic property, but also avoids the influence on the normal cleaning work caused by the unlocking piece 6 being located outside the groove.

A floor scrubber according to an embodiment of the present invention is described below.

The utility model discloses floor cleaning machine, including the scrubbing brush subassembly of above-mentioned arbitrary embodiment.

The utility model discloses floor cleaning machine realizes the automatic locking and the manual unblock of end cover 4 through locking piece 5, reset spring 7 and unblock piece 6 to improve the installation of end cover 4 and the convenience of dismantlement, and then be convenient for wash and maintain round brush 3.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

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 to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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

Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations to the above embodiments by those of ordinary skill in the art are intended to be within the scope of the present invention.

Claims (10)

1. A floor brush assembly, comprising:

the shell (1), wherein a connecting part (11) is arranged on the shell (1);

a driver (2), the driver (2) being mounted on the housing (1);

the first end of the rolling brush (3) is in transmission connection with the driving piece (2);

the end cover (4), the end cover (4) is detachably mounted on the shell (1), and the second end of the rolling brush (3) is connected with the end cover (4) and can rotate relative to the end cover (4);

locking piece (5), locking piece (5) swing joint in end cover (4), be equipped with spacing portion (51) on locking piece (5), locking piece (5) are portable between primary importance and second place primary importance, spacing portion (51) with connecting portion (11) cooperation is in order to incite somebody to action end cover (4) locking the second place, spacing portion (51) are kept away from connecting portion (11).

2. A floor brush assembly according to claim 1, characterized in that the end cap (4) has a receiving cavity (401), the locking block (5) is movably disposed in the receiving cavity (401), the end cap (4) is further provided with an opening for communicating the receiving cavity (401) with the outside, the limiting portion (51) can be matched with the connecting portion (11) through the opening, or the connecting portion (11) can be matched with the limiting portion (51) through the opening.

3. The floor brush assembly according to claim 2, characterized in that one end of the housing (1) adjacent to the end cover (4) is provided with a first groove (101), the end cover (4) is provided with a protrusion (41) matched with the first groove (101), the connecting portion (11) is arranged on a groove wall of the first groove (101) and extends downwards, the locking block (5) is slidably arranged in the accommodating cavity (401) along a vertical direction, the limiting portion (51) is arranged at an upper end of the locking block (5) and extends upwards, in the first position, the limiting portion (51) penetrates through the opening to be clamped with the connecting portion (11), and the limiting portion (51) is located on one side of the connecting portion (11) departing from the end cover (4).

4. A floor brush assembly according to claim 3, further comprising an unlocking member (6), wherein the unlocking member (6) is movably connected to the end cap (4), and at least part of the unlocking member (6) contacts with the locking block (5) to drive the locking block (5) to move from the first position to the second position.

5. A floor brush assembly according to claim 4, characterized in that the unlocking member (6) is rotatably mounted on the end cover (4), the lower end of the unlocking member (6) is provided with an abutting part (61), one side of the locking block (5) adjacent to the unlocking member (6) is provided with an inclined plane (501), the inclined plane (501) is inclined from top to bottom in the direction from the first end to the second end of the rolling brush (3), and the abutting part (61) can rotate along with the unlocking member (6) and abut against the inclined plane (501) to drive the locking block (5) to slide downwards.

6. A floor brush assembly according to claim 3, characterized by further comprising a return spring (7), wherein a convex pillar (52) is arranged on the lower end surface of the locking block (5), the upper end of the return spring (7) is sleeved on the convex pillar (52) and abuts against the lower end surface of the locking block (5), and the lower end of the return spring (7) abuts against the bottom of the accommodating cavity (401).

7. A floor brush assembly according to claim 5, characterized in that the unlocking member (6) comprises a vertical plate section (62) and a horizontal plate section (63) connected to each other, an angle being provided between the vertical plate section (62) and the horizontal plate section (63), a first end of the vertical plate section (62) being hinged to the end cap (4), a second end of the vertical plate section (62) being connected to the horizontal plate section (63), and the abutment member (61) being connected to the first end of the vertical plate section (62).

8. A floor brush assembly according to claim 7, characterized in that a second groove (402) is provided in the end cap (4), a third groove (102) is provided in the housing (1) in communication with the second groove (402), and in the first position the riser section (62) is located in the second groove (402), a part of the cross plate section (63) is located in the second groove (402), and another part of the cross plate section (63) is located in the third groove (102).

9. A floor brush assembly according to claim 8, characterized in that the outer edge of the cross plate section (63) is smoothly curved, and a downwardly extending side wall plate (64) is provided at the outer edge of the cross plate section (63), and the height of the side wall plate (64) is equal to the depth of the third groove (102).

10. A floor scrubbing machine comprising a floor brush assembly according to any one of claims 1-9.

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