Multifunctional suction nozzle, extension tube assembly and vacuum cleaner

Abstract

A multifunctional suction nozzle (20). The multifunctional suction nozzle (20) comprises a dust suction head (201) and a brush head (202), the brush head (202) being movable with respect to a main body (2011) of the dust suction head (201), and a locking assembly being provided between the brush head (202) and the dust suction head (201). When not in use, the multifunctional suction nozzle (20) can be accommodated in an extension tube (21) to form a suction assembly (2), and the suction assembly (2) can be connected to a floor brush assembly (3) and a vacuum cleaner main unit (1) so as to clean the ground.

Description

Multi-function nozzle, extension tube assembly and vacuum cleaner

[0001] Cross-references to related publications

[0002] This disclosure claims priority to Chinese patent application No. 202323022695.7, filed on November 8, 2023, entitled “Multi-function nozzle, extension tube assembly and vacuum cleaner”, and Chinese patent application No. 202323020650.6, filed on November 8, 2023, entitled “Accessory head, pipe attachment and vacuum cleaner assembly”, the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the technical field of household appliances, and in particular to a multifunctional suction nozzle, an extension tube assembly including the multifunctional suction nozzle, and a vacuum cleaner including the extension tube assembly. Background Art

[0004] The vacuum cleaner will be compatible with a variety of accessories to suit different scenarios. When using a floor brush to clean the floor, a connecting pipe accessory is generally used to connect the floor brush to the vacuum cleaner host. When using a flat suction piece to clean curtains, tables, gaps and corners, the flat suction piece is connected to the vacuum cleaner host.

[0005] However, the flat adsorption piece and the connecting pipe in the related art are separated as two accessories, which may cause users to switch accessories back and forth in different scenarios. In addition, since users may often use the connecting pipe and the floor brush to clean the floor, but seldom use the flat adsorption piece, they cannot find the flat adsorption piece when they want to use it, or the flat adsorption piece is not often used and takes up space in the home, which makes storage more troublesome and it is easy to lose accessories that are not often used.

[0006] Public content

[0007] According to various embodiments of the present disclosure, there is provided a multifunctional suction nozzle for a vacuum cleaner, the multifunctional suction nozzle comprising: a dust collector head and a brush head, the dust collector head comprising a tubular main body and an adapter connected to the main body, the brush head being sleeved on the dust collector head main body, and the adapter being detachably connected to the vacuum cleaner. The brush head has a first locking position on the dust collector head main body, close to the adapter, and a second locking position away from the adapter, the brush head being provided with a first locking member, the dust collector head main body being provided with a first mating portion in the first locking position, and the dust collector head main body being provided with a second mating portion in the second locking position, the first locking member being detachably connected to the first mating portion or the second mating portion.

[0008] In some embodiments, the brush head includes an outer shell and an inner shell, and the inner shell is inserted into the outer shell along one end of the outer shell. An unlocking key is provided on the surface of the outer shell, and the unlocking key includes an actuating portion and a pressing portion, and the pressing portion abuts against the first locking member. The first locking member includes a hook at the bottom, and the hook protrudes from the inner shell and can be selectively connected with the first matching portion or the second matching portion. The first locking member is biased by a spring so that the hook moves toward the first matching portion or the second matching portion. The user presses the unlocking key to push the first locking member upward along the surface of the inner shell to unlock the hook from the first matching portion or the second matching portion of the vacuum head body. After the unlocking key is released, the spring pushes the first locking member downward to lock the hook with the first locking portion or the second locking portion.

[0009] Optionally, a stop assembly is further provided between the outer shell and the inner shell of the brush head, and a limit fitting portion is provided on the main body of the dust collector head near the second locking position, and the stop assembly cooperates with the limit fitting portion to prevent the brush head from separating from the main body of the dust collector head when moving from the first locking position to the second locking position;

[0010] Specifically, the stop assembly includes a pawl and a return spring. The stopper assembly includes a plane perpendicular to the main body of the cleaner head, which blocks the pawl to limit the movement of the brush head from the first locking position to the second locking position. The stopper assembly also includes a guide slope or a smooth curved surface, along which the pawl can slide without hindering the movement of the brush head from the second locking position to the first locking position. The return spring applies pressure to the pawl toward the main body of the cleaner head to maintain the lock between the pawl and the stopper assembly when the pawl moves to the stopper assembly.

[0011] In some embodiments, a plurality of brush holes are provided at the end of the inner shell of the brush head, and brushes are fixed in the brush holes. The brushes are arranged to extend basically parallel to the longitudinal axis direction of the vacuum cleaner head body. A soft rubber strip is provided at the end of the outer shell near the brush, and the soft rubber strip extends around the brush. The soft rubber strip can protect the table top in the brushing mode to prevent the brush head shell from causing damage to the table top.

[0012] In some embodiments, a guide structure is provided between the brush head and the dust collector head body to maintain the axial movement of the brush head between the first locking position and the second locking position. The guide surface includes a guide surface provided on the dust collector head body, and a mating surface provided on the brush head shell and mating with the guide surface.

[0013] In some embodiments, when in the first locking position, the brush head is retracted relative to the dust collector head so that the brush head does not work; when in the second locking position, the brush head is unfolded relative to the dust collector head and locked with each other to allow the brush head to work, wherein an extrusion piece is provided at the end of the brush head, and the extrusion piece is used to move under the action of external force to release the lock of the brush head and the dust collector head.

[0014] In some embodiments, the extrusion member is configured to unlock the brush head and the dust collector head when moving along a first direction, wherein the first direction is a moving direction of the brush head relative to the dust collector head from the second state to the first state.

[0015] In some embodiments, the brush head includes a main structure and a cleaning structure, the cleaning structure is connected to one end of the main structure, and the extrusion member extends from the one end of the main structure to be driven by a docking device along the first direction.

[0016] In some embodiments, the multifunctional suction nozzle further includes a third resetting member, which applies an elastic force to the extrusion member along a second direction, and the second direction is the movement direction of the brush head relative to the vacuum head from the first connection state to the second connection state.

[0017] In some embodiments, the multifunctional suction nozzle further includes a second locking member for locking and unlocking the brush head and the dust collector head, and the extrusion member drives the second locking member under the action of external force to release the lock of the brush head and the dust collector head.

[0018] In some embodiments, the second locking member is rotatably connected to the brush head and has a wedge-shaped structure and a locking structure. The wedge-shaped structure and the locking structure are respectively arranged on both sides of the rotating shaft. The locking structure is used to lock the brush head and the dust collector head. The extrusion member is in transmission cooperation with the wedge-shaped structure. When subjected to external force, the wedge-shaped structure is pressed to unlock the brush head and the dust collector head.

[0019] In some embodiments, the second locking member is rotatably connected to the brush head and has a pressing structure and a locking structure. The pressing structure and the locking structure are respectively arranged on both sides of the rotating shaft. The locking structure is used to lock the brush head and the dust collector head, and the pressing structure is used to be pressed to release the lock of the brush head and the dust collector head.

[0020] In some embodiments, one end of the vacuum cleaner head is connected to a joint portion, and a positioning boss is provided on the outer peripheral surface of the other end, and the joint portion and the positioning boss cooperate to limit the brush head from falling out of the vacuum cleaner head.

[0021] In some embodiments, the brush head is mounted on the outer periphery of the vacuum head.

[0022] In some embodiments, the brush head includes an outer shell and an inner shell, the outer shell surrounds the inner shell, a brush is provided at one end of the inner shell, and the extrusion piece is located between the outer shell and the inner shell or abuts against the end of the inner shell.

[0023] According to various embodiments of the present disclosure, the present disclosure provides a multifunctional suction nozzle for a vacuum cleaner, comprising a dust collector head and a brush head, the dust collector head comprising a tubular main body, an adapter connected to the main body, the brush head being sleeved on the main body, and the adapter realizing a detachable connection with the main body of the vacuum cleaner; the brush head having a first position close to the adapter and a second position away from the adapter on the main body; a first positioning portion is provided on the brush head, the main body is provided with a first matching portion at the first position, and the main body is provided with a second matching portion at the second position, and the first positioning portion and the second matching portion are releasably connected.

[0024] In some embodiments, the first positioning portion and the first matching portion are interference fit.

[0025] According to various embodiments of the present disclosure, the present disclosure provides a suction assembly, comprising the aforementioned multifunctional suction nozzle and an extension tube, wherein the extension tube is arranged to be push-fitted onto the multifunctional suction nozzle, so that when the extension tube is connected to the multifunctional suction nozzle, the end face of the extension tube abuts against the brush head, and the main body of the dust collector head is at least partially stored in the extension tube.

[0026] The extension tube is provided with a third locking piece, and the cleaner head body is provided with a third matching portion. The third locking piece cooperates with the third locking portion to lock and connect the extension tube with the multifunctional suction nozzle.

[0027] In some embodiments, the extension tube has a joint portion. When the multifunctional suction nozzle is engaged with the extension tube, the joint portion abuts against an extrusion member to release the lock between the brush head and the dust collector head.

[0028] According to various embodiments of the present disclosure, the present disclosure provides a vacuum cleaner, including a vacuum cleaner main unit, a floor brush assembly, and the above-mentioned extension tube assembly, wherein the vacuum cleaner main unit and the floor brush assembly are connected through the extension tube assembly.

[0029] According to various embodiments of the present disclosure, the present disclosure also provides a vacuum cleaner, including a vacuum cleaner main unit, a floor brush assembly and the aforementioned suction assembly, the vacuum cleaner having a first connection state and a second connection state, in the first connection state, the multifunctional suction nozzle and the extension tube are matched with each other, the multifunctional suction nozzle is connected to the vacuum cleaner main unit, and the extension tube is connected to the floor brush assembly; in the second connection state, the multifunctional suction nozzle and the extension tube are separated from each other, and the multifunctional suction nozzle is connected to the vacuum cleaner main unit.

[0030] According to various embodiments of the present disclosure, the present disclosure also provides a vacuum cleaner, including a vacuum cleaner main body and a multifunctional suction nozzle that can be directly or indirectly connected to the vacuum cleaner main body, the multifunctional suction nozzle including a dust collector head and a brush head, the brush head having a first state retracted relative to the dust collector head and a second state expanded relative to the dust collector head, the brush head not working in the first state; in the second state, the brush head can work, and the brush head and the dust collector head are locked with each other to allow the brush head to work.

[0031] The multifunctional suction nozzle according to the present invention can be attached to the main body of a handheld vacuum cleaner for use in "brush sweeping mode" or "flat suction mode" alone, or connected to an extension tube for use in floor cleaning mode, which is convenient for users to store and clean anytime and anywhere. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to better describe and illustrate the embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more of the accompanying drawings. The additional details or examples used to describe the accompanying drawings should not be considered to limit the scope of the disclosed inventions, the presently described embodiments and / or examples, and any of the best modes currently understood for these inventions.

[0033] FIG1 is a schematic diagram of a multifunctional suction nozzle in one state according to some embodiments of the present disclosure;

[0034] FIG2 is a schematic diagram of another state of the multifunctional suction nozzle according to some embodiments of the present disclosure;

[0035] FIG3 is a schematic structural diagram of a dust collector head according to some embodiments of the present disclosure;

[0036] FIG4 is an exploded view of a cleaner head according to some embodiments of the present disclosure;

[0037] FIG5 is a schematic diagram of a vacuum cleaner in use according to some embodiments of the present disclosure;

[0038] FIG6 is a schematic diagram of another use state of the vacuum cleaner according to some embodiments of the present disclosure;

[0039] FIG7 is another schematic diagram of a vacuum cleaner in use according to some embodiments of the present disclosure;

[0040] FIG8 is an exploded view of a multifunctional nozzle according to some embodiments of the present disclosure;

[0041] FIG9 is an exploded view of a suction assembly according to some embodiments of the present disclosure;

[0042] FIG10 is an exploded view of a brush head according to some embodiments of the present disclosure;

[0043] FIG11 is a schematic structural diagram of a first locking member in some embodiments of the present disclosure;

[0044] FIG12 is a schematic structural diagram of a brush head according to some embodiments of the present disclosure;

[0045] FIG13 is a schematic diagram of a multifunctional nozzle in a first state according to some embodiments of the present disclosure;

[0046] FIG14 is a schematic diagram of a multifunctional nozzle in a second state according to some embodiments of the present disclosure;

[0047] FIG15 is a schematic diagram of a brush head according to some embodiments of the present disclosure;

[0048] FIG16 is a cross-sectional view of the brush head in FIG14 , with the locking portion in a locked position;

[0049] FIG17 is a cross-sectional view of the brush head in FIG14 , with the locking portion in an unlocked position;

[0050] FIG18 is a schematic diagram of a suction assembly according to some embodiments of the present disclosure, wherein an extension tube is connected to a multifunctional suction nozzle;

[0051] FIG19 is a schematic diagram of a suction assembly according to some embodiments of the present disclosure, wherein the extension tube is not fully connected to the multi-function suction nozzle;

[0052] FIG20 is a schematic diagram of a vacuum cleaner assembly according to some embodiments of the present disclosure, utilizing a floor brush for cleaning;

[0053] FIG21 is an exploded schematic diagram of the vacuum cleaner assembly in FIG19;

[0054] FIG22 is a schematic diagram of a vacuum cleaner assembly according to some embodiments of the present disclosure, using a vacuum head for cleaning;

[0055] Figure 23 is a schematic diagram of a vacuum cleaner assembly according to some embodiments of the present disclosure, which utilizes a brush head for cleaning.

[0056] Reference numerals: 20-multi-function nozzle; 201-cleaning head; 2011-cleaning head body; 2012-adapter; 2013-first positioning groove; 2014-second positioning groove; 2015-connector; 202-brush head; 2020-first locking member; 20201-first matching portion; 20202-second matching portion; 2021-outer housing; 2022-inner housing; 20201-hook; 2023-unlocking key; 20231-actuating portion; 20232-pressing portion; 20204-limiting matching portion; 20205-pawl; 20211-soft rubber strip; 202111-inner ring; 202112-outer ring; 20110-guide surface; 20200-mating surface; 2024-annular rib; 2025-main structure; 2026-cleaning structure; 2027-extrusion member; 2028-second locking member; 20281-pressing structure; 20282-wedge structure; 20283-locking structure; 1-vacuum cleaner main unit; 2-suction assembly; 21-extension tube; 211-rod; 212-joining part; 2121-positioning boss; 2100-third locking member; 20203-third mating part; 3-floor brush assembly; up and down direction AA. DETAILED DESCRIPTION

[0057] The following describes in detail embodiments of the present disclosure, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0058] Example 1:

[0059] As shown in Figures 1-4, the multifunctional suction nozzle 20 according to the embodiment of the present disclosure includes a dust collector head 201 and a brush head 202. The dust collector head 201 includes a tubular main body 2011 and an adapter 2012 connected to the main body 2011 of the dust collector head 201. The brush head 202 is mounted on the main body 2011 of the dust collector head 201, and the adapter 2012 realizes a detachable connection with the vacuum cleaner host 1.

[0060] The brush head 202 has a first locking position close to the adapter 2012 and a second locking position away from the adapter 2012 on the main body 2011 of the cleaner head 201 , and the brush head 202 is movable on the main body 2011 of the cleaner head 201 .

[0061] As shown in Figure 7, when the brush head 202 is in the first locking position, the multifunctional suction nozzle 20 can be used to clean narrow gaps, window frames and other corners; as shown in Figure 6, when the brush head 202 is in the second locking position, the multifunctional suction nozzle 20 can be used to clean dust on the surfaces of furniture, decorative parts, etc.

[0062] The brush head 202 is provided with a locking assembly to realize the locking connection between the brush head 202 and the main body 2011 of the vacuum head 201 in the first locking position or the second locking position; specifically, the brush head 202 includes an outer shell 2021 and an inner shell 2022, and the inner shell 2022 is inserted into the outer shell 2021 along one end of the outer shell 2021, and the locking assembly is provided between the outer shell 2021 and the inner shell 2022, and the locking assembly includes a first locking member 2020, a first reset member and an unlocking key 2023. The first locking member 2020 is provided with a hook 20201 on the end surface facing the cleaner head 201. The hook 20201 protrudes from the inner shell 2022 and can be selectively connected to the first matching portion 20201 or the second matching portion 20202. The unlocking key 2023 includes an actuating portion 20231 provided on the surface of the outer shell 2021 of the brush head 202, and a pressing portion 20232 abutting against the first locking member 2020. When the user presses the actuating portion 20231, the pressing portion 20232 slides along the surface of the inner shell 2022. This in turn pushes the first locking piece 2020 to move in a direction away from the main body 2011 of the vacuum cleaner head 201, so that the hook 20201 is separated from the first mating part 20201 or the second mating part 20202; the first reset piece is located between the outer shell 2021 and the first locking piece 2020. After the pressure is released, the first reset piece pushes the first locking piece 2020 to move toward the main body 2011 of the vacuum cleaner head 201 to lock the first locking piece 2020 and the first mating part 20201 or the second mating part 20202 together.

[0063] A stopper assembly is provided between the outer shell 2021 and the inner shell 2022 to limit the movement of the brush head 202 from the first locking position to the second locking position, thereby preventing the brush head 202 from separating from the main body 2011 of the cleaner head 201. A limit engaging portion 20204 is provided on the surface of the main body 2011 of the cleaner head 201 to engage with the stopper assembly.

[0064] Specifically, the stop assembly includes a pawl 20205 and a second return member. The pawl 20205 is connected to the brush head 202 and is configured to pivot relative to the inner housing 2022 and pass through the inner housing. A portion of the pawl 20205 is spring-biased toward the surface of the main body 2011 of the cleaner head 201. The pawl 20205 is positioned so that when the brush head 202 moves from the first locking position to the second locking position, the pawl 20205 enters the limited engagement portion 20204 before the brush head 202 disengages from the main body 2011 of the cleaner head 201. The first locking member 2020 cooperates with the second locking portion to prevent the brush head 202 from moving relative to the main body 2011 of the cleaner head 201 during the use of the multi-function suction nozzle 20 in its brush mode. The unlocking key 2023 includes an actuating portion 20231 and a pressing portion 20232. The first locking member 2020 is biased by a spring, and the pressing portion 20232 of the unlocking key 2023 abuts against the first locking member 2020. The user presses the actuating portion 20231 to cause the pressing portion 20232 to be in contact with the inner shell 202. 2, the first locking member 2020 moves upward under the action of the pressing end, so that the hook 20201 of the first locking member 2020 is unlocked from the first matching portion 20201 or the second matching portion 20202. When the actuating portion 20231 is not pressed, the first locking member 2020 moves downward under the action of the return spring, so that the hook 20201 at the bottom of the first locking member 2020 is locked with the first matching portion 20201 or the second matching portion 20202. Optionally, the first matching portion 20201, the second matching portion 20202, and the third matching portion 20203 are structures such as through holes or slots, and the first return member and the second return member are springs.

[0065] A brush is disposed at the end of the inner housing 2022, arranged to extend substantially parallel to the longitudinal axis of the main body 2011 of the cleaner head 201. A soft rubber strip 20211 is disposed at the end of the brush head 202, extending at least partially around the brush to protect surfaces such as furniture and decorative items from being scratched. Specifically, the rubber strip 20211 includes an outer ring 202112 and an inner ring 202111. The inner ring 202111 is disposed at the end of the inner housing 2022 and surrounds the brush to prevent the brush from deforming or warping during use, particularly when the brush contacts the surface to be cleaned or when the multi-function nozzle 20 is connected to the extension tube 21. The outer ring 202112 is disposed at the end of the outer housing 2021 and is substantially flush with the outer housing 2021, to prevent the edge of the outer housing from scratching the surface to be cleaned when the brush head 202 is used for cleaning.

[0066] At least one guide surface 20110 is provided on the outer surface of the main body 2011 of the vacuum cleaner head 201, and the brush head 202 is provided with a mating surface 20200 that cooperates with the guide surface 20110. The guide surface 20110 cooperates with the mating surface 20200 to guide the brush head 202 to move on the main body 2011 of the vacuum cleaner head 201.

[0067] Example 2:

[0068] As shown in FIG9 , this embodiment provides a suction assembly 2, comprising the multifunctional suction nozzle 20 and an extension tube 21 of Embodiment 1. The extension tube 21 is configured to be push-fitted onto the multifunctional suction nozzle 20, such that when the extension tube 21 is connected to the multifunctional suction nozzle 20, the brush head 202 abuts against the extension tube 21, and the main body 2011 of the cleaning head 201 is at least partially stored within the extension tube 21. A third locking member 2100 is provided on the extension tube 21, and a third mating portion 20203 is provided on the main body 2011 of the cleaning head 201. When the multifunctional suction nozzle 20 and the extension tube 21 are connected, the third locking member 2100 locks and engages with the third mating portion 20203.

[0069] Example 3:

[0070] As shown in FIG5 , this embodiment provides a vacuum cleaner, comprising a vacuum cleaner main unit 1 , a floor brush assembly 3 and the suction assembly 2 in embodiment 2. The vacuum cleaner main unit 1 and the floor brush assembly 3 are connected via the suction assembly 2 for cleaning the floor.

[0071] Example 4:

[0072] As shown in Figures 1 to 2, this embodiment provides a multifunctional suction nozzle for a vacuum cleaner, including a dust collector head 201 and a brush head 202, the dust collector head 201 including a tubular main body 2011 and an adapter 2012 connected to the main body 2011, the brush head 202 is sleeved on the main body 2011, and the adapter 2012 realizes a detachable connection with the vacuum cleaner host 1; the brush head 202 has a first position close to the adapter 2012 and a second position away from the adapter 2012 on the main body 2011; the brush head 202 is provided with a first positioning portion, the main body 2011 is provided with a first matching portion at the first position, and the main body 2011 is provided with a second matching portion 20202 at the second position, and the first positioning portion and the second matching portion 20202 are releasably connected. In this embodiment, the cooperation between the first positioning portion and the first matching portion may not be a locking cooperation, but may be an interference cooperation. For example, soft glue or a soft material similar to soft glue is provided on one of the first positioning portion and the first matching portion, so that the first positioning portion and the first matching portion can have a certain interference fit when they cooperate, ensuring that the first positioning portion and the first matching portion can be relatively fixed and not prone to relative movement.

[0073] As shown in Figures 13 to 17 , the multifunctional suction nozzle 20 of a vacuum cleaner according to an embodiment of the present disclosure includes a suction head 201 and a brush head 202. The suction head 201 can be used to clean small areas such as gaps and corners. The brush head 202 can be used to clean countertops and surfaces while avoiding scratching the countertops. The brush head 202 is movable on the suction head 201.

[0074] The multifunctional suction nozzle 20 may have a first locking position and a second locking position. In the first locking position, the brush head 202 is retracted relative to the dust collector head 201 so that the brush head 202 does not work. In the second locking position, the brush head 202 is unfolded relative to the dust collector head 201, and the brush head 202 and the dust collector head 201 are locked with each other so that the brush head 202 can work. Specifically, the brush head 202 may have a cleaning structure. When the brush head 202 is in the second locking position, the cleaning structure can brush the work surface, thereby using the brush head 202 to clean the work surface. When the brush head 202 is in the first locking position, the cleaning structure is retracted onto the dust collector head 201. At this time, the cleaning structure is not working, and the work surface can be cleaned through the suction port of the dust collector head 201, or other structures (such as the extension tube 21 described below) can be connected to the dust collector head 201. Optionally, the brush head 202 may extend out of one end of the cleaner head 201 in the second locking position, and the brush head 202 may be retracted toward the other end of the cleaner head 201 in the first locking position compared to the second locking position.

[0075] An extrusion piece 2027 may be provided at the end of the brush head 202. The extrusion piece 2027 may be configured to move under the action of an external force to release the lock between the brush head 202 and the dust collector head 201. If the multifunctional suction nozzle 20 is in the second locking position, when the brush head 202 and the dust collector head 201 are locked with each other, the brush head 202 cannot move relative to the dust collector head 201 to the first locking position; when the brush head 202 and the dust collector head 201 are unlocked, the brush head 202 can move relative to the dust collector head 201, thereby switching the multifunctional suction nozzle 200 to the first locking position.

[0076] According to the multifunctional suction nozzle 20 of the embodiment of the present disclosure, by switching the extrusion piece 2027 between the first locking position and the second locking position, the state of the multifunctional suction nozzle 20 can be conveniently adjusted according to the use requirements, so as to optimize the function of the multifunctional suction nozzle 20 and expand the application range of the multifunctional suction nozzle 20. In addition, the extrusion piece 2027 can switch the locked and unlocked states of the brush head 202 and the dust collector head 201 under the action of an external force, so that the dust collector head 201 and the brush head 202 can be switched between the locked and unlocked states, which facilitates the use of the multifunctional suction nozzle 20 and reduces the learning cost of using the multifunctional suction nozzle 20.

[0077] In addition, the multifunctional suction nozzle 20 of the present disclosure can be used to connect to the extension tube 21, and the cleaning range of the multifunctional suction nozzle 20 can be increased by the extension tube 21, wherein the external force can be provided by the extension tube 21, that is, when the extension tube 21 and the multifunctional suction nozzle 20 are installed, the extension tube 21 can drive the extrusion member 2027 to move, thereby achieving the switching of the multifunctional suction nozzle 20 between the first locking position and the second locking position. Therefore, in some embodiments of the present disclosure, the extrusion member 2027 is configured to unlock the brush head 202 and the dust collector head 201 when moving along a first direction, and the first direction is the direction of movement of the brush head 202 relative to the dust collector head 201 from the second locking position to the first locking position, that is, the direction from bottom to top in the accompanying drawings. In this way, when the extension tube 21 is connected to the multifunctional suction nozzle 20, the extension tube 21 can be connected to the multifunctional suction nozzle 20 along the first anti-collision connection mentioned above, and is configured to apply an external force to the extrusion member 2027 to unlock the multifunctional suction nozzle 20 in the second locking position.

[0078] Of course, the extrusion member 2027 may also be driven by other external forces to unlock the cleaner head 201 and the brush head 202, such as the second locking member 2028 described below. This disclosure mainly uses the example of the extrusion member 2027 moving along the first direction to unlock the brush head 202 and the cleaner head 201, but this does not limit the scope of protection of this disclosure.

[0079] As shown in Figures 13 to 17, in some embodiments of the present disclosure, the brush head 202 includes a main structure 2025 and a cleaning structure 2026, the cleaning structure 2026 is connected to the main structure 2025, and the cleaning structure 2026 can be used to clean the work surface, wherein the cleaning structure 2026 is connected to one end of the main structure 2025, and the extrusion member 2027 extends from the one end of the main structure 2025 to be driven by the docking device along the first direction. That is, during the docking process of the docking device (referring to the extension tube 21 below) and the multi-functional suction nozzle 20, the docking device and the extrusion member 2027 are driven and matched, and the extrusion member 2027 is driven to move along the first direction to release the lock of the dust collector head 201 and the brush head 202. The unlocking method of the dust collector head 201 and the brush head 202 can be simplified, making the use of the multi-functional suction nozzle 20 more convenient.

[0080] In addition, the multifunctional suction nozzle 20 further includes a third reset member, which applies an elastic force to the extrusion member 2027 along a second direction, wherein the second direction is the direction of movement of the brush head 202 relative to the dust collector head 201 from the first locking position to the second locking position. Thus, the extrusion member 2027 can be reset by the third reset member. When the extrusion member 2027 moves along the first direction, the lock of the dust collector head 201 and the brush head 202 can be released. When the external force disappears, the extrusion member 2027 can be driven to the reset position by the third reset member, so that the dust collector head 201 and the brush head 202 can be quickly locked to avoid affecting the stability of the matching structure between the dust collector head 201 and the brush head 202. In addition, when the multifunctional suction nozzle 20 is converted to the second position, the third reset member can release the influence of the extrusion member 2027 on the multifunctional suction nozzle 20, thereby facilitating the locking of the dust collector head 201 and the brush head 202.

[0081] In addition, the multifunctional suction nozzle 20 of the present disclosure can be a separate accessory, connected to the vacuum cleaner main unit 1 when in use, and can be sold as a set with the vacuum cleaner or sold separately. The multifunctional suction nozzle 20 can also be connected to the vacuum cleaner main unit 1 as a part of the vacuum cleaner main unit 1. In addition, the multifunctional suction nozzle 20 can be directly connected to the vacuum cleaner main unit 1; or an intermediary can be provided between the multifunctional suction nozzle 20 and the vacuum cleaner main unit 1, and the multifunctional suction nozzle 20 and the vacuum cleaner main unit 1 can be indirectly connected through the intermediary.

[0082] In conjunction with the foregoing, the brush head 202 can be locked with the dust collector head 201 when in the second locked position. Therefore, a second locking member 2028 is provided in the present disclosure to lock the brush head 202 and the dust collector head 201. As shown in Figures 13 and 17, in some embodiments of the present disclosure, the multifunctional nozzle 20 further includes a second locking member 2028, which is used to lock and unlock the brush head 202 and the dust collector head 201. The locking action of the second locking member 2028 can restrict the movement of the brush head 202 relative to the dust collector head 201. In other words, the second locking member 2028 has a locked state and an unlocked state. When the second locking member 2028 is in the locked state, the brush head 202 and the dust collector head 201 are locked, and the brush head 202 is relatively stationary and cannot move relative to the dust collector head 201. When the second locking member 2028 is in the unlocked state, the brush head 202 and the dust collector head 201 are unlocked. The extruding member 2027 drives the second locking member 2028 under the action of external force to release the lock of the vacuum head 201 and the brush head 202.

[0083] A positioning groove can be provided on the outer surface of the dust collector head 201. In this way, when the second locking member 2028 locks the brush head 202 and the dust collector head 201, the locking structure 20283 can be extended into the positioning groove, thereby locking the brush head 202 and the dust collector head 201. In combination with the above embodiment, the brush head 202 can have a first locking position and a second locking position. Therefore, multiple positioning grooves can be provided on the dust collector head 201 to facilitate locking the brush head 202 in different positions. For example, the dust collector head 201 can be provided with a first positioning groove 2013 and a second positioning groove 2014. When the brush head 202 is in the first locking position, the second locking member 2028 will lock into the first positioning groove 2013, thereby positioning the brush head 202 in the first locking position; when the brush head 202 is in the second locking position, the second locking member 2028 will lock into the second positioning groove 2014, thereby positioning the brush head 202 in the second locking position. Of course, a third positioning groove may be further provided on the cleaner head 201 to lock the brush head 202 between the first locking position and the second locking position, or to lock the brush head 202 outside the first locking position and the second locking position.

[0084] In addition, in combination with the above, the extrusion member 2027 is in transmission cooperation with the second locking member 2028. By transmitting and cooperating with the extrusion member 2027 and the second locking member 2028, when the extrusion member 2027 is subjected to an external force, the second locking member 2028 can be driven to release the lock of the dust collector head 201 and the brush head 202. In other words, when the extrusion member 2027 is subjected to an external force, the second locking member 2028 can be driven to switch to an unlocked state, at which time the brush head 202 can move relative to the dust collector head 201. The combination of the second locking member 2028 and the extrusion member 2027 can ensure stable cooperation between the brush head 202 and the dust collector head 201, and can quickly release the lock of the dust collector head 201 and the brush head 202 when the extrusion member 2027 is subjected to an external force, thereby facilitating use.

[0085] In some embodiments of the present disclosure, the second locking member 2028 is rotatably connected to the brush head 202. The second locking member 2028 includes a wedge-shaped structure 20282 and a locking structure 20283, wherein the wedge-shaped structure 20282 and the locking structure 20283 are disposed on either side of the rotation axis of the second locking member 2028. The locking structure 20283 is used to lock the brush head 202 and the cleaner head 201. The extrusion member 2027 is in driving engagement with the wedge-shaped structure 20282 and is adapted to press the wedge-shaped structure 20282 to release the lock between the cleaner head 201 and the brush head 202. The extrusion member 2027 can be configured to move in the direction (a first direction or a second direction) in which the brush head 202 moves relative to the cleaner head 201. This is the same direction as the direction in which the extension tube 21 is connected to the multi-function nozzle 20. Therefore, when the extension tube 21 is connected to the multi-function nozzle 20, the extrusion member 2027 can be driven to move in the first direction. When the extrusion piece 2027 moves along the first direction, it can cooperate with the wedge structure 20282 to drive the wedge structure 20282 to form a pressing action. At the same time, since the wedge structure 20282 and the locking structure 20283 are respectively arranged on both sides of the rotating shaft, the action of pressing the wedge structure 20282 will lift the locking structure 20283. At this time, the locking structure 20283 will release the lock on the vacuum head 201 and the brush head 202, thereby achieving the purpose of unlocking the vacuum head 201 and the brush head 202.

[0086] In some embodiments of the present disclosure, the second locking member 2028 is rotatably connected to the brush head 202 and has a pressing structure 20281 and a locking structure 20283 respectively arranged on both sides of the rotation axis. The locking structure 20283 is used to lock the brush head 202 and the dust collector head 201, and the pressing structure 20281 is used to be pressed to release the lock of the dust collector head 201 and the brush head 202. During use, the locking structure 20283 can lock the brush head 202 and the dust collector head 201. Since the pressing structure 20281 and the locking structure 20283 are respectively arranged on both sides of the rotation axis, the action of pressing the pressing structure 20281 will lift the locking structure 20283, and at this time, the locking structure 20283 will release the lock of the dust collector head 201 and the brush head 202.

[0087] Optionally, when the brush head 202 is in the second locking position, the second locking piece 2028 on the brush head 202 is locked with the second positioning groove 2014 of the dust collector head 201. After the multi-functional suction nozzle 20 and the extension tube 21 are installed in place, the dust collector head 201 abuts against the mating surface of the inner wall of the extension tube 21, and the locking part of the extension tube 21 is locked with the second positioning groove 2014 of the dust collector head 201.

[0088] In combination with the aforementioned embodiment, the second locking member 2028 may include a pressing structure 20281, a wedge-shaped structure 20282, and a locking structure 20283. The locking structure 20283 is located on one side of the rotation axis of the second locking member 2028, while the pressing structure 20281 and the wedge-shaped structure 20282 are located on the other side of the rotation axis of the second locking member 2028. Pressing the wedge-shaped structure 20282 by the extruding member 2027 can achieve substantially the same effect as pressing the pressing structure 20281, thereby unlocking the second locking member 2028.

[0089] In addition, the first working component may also include a second reset member, which can be connected to the second locking member 2028 and can have an elastic force to drive the second locking member 2028 to move to a locked position, so that the second locking member 2028 can be reset after the external force driving the second locking member 2028 to unlock disappears, thereby achieving rapid locking of the brush head 202 and the dust collector head 201.

[0090] As shown in Figures 13 to 14, the brush head 202 can use the flat suction function of the dust collector head 201 when it is in the first locking position, and can use the brush function when it is in the second locking position; further, the brush head 202 is provided with a second locking piece 2028 (for example, a lock hook), and the dust collector head 201 is provided with a first positioning groove 2013 and a second positioning groove 2014 that cooperate with the second locking piece 2028, and the brush head 202 is also provided with a second reset piece connected to the second locking piece 2028, the brush head 202 has an inner shell 2022 and an outer shell 2021, the outer shell 2021 is provided with a mounting groove, and the second locking piece 2028 is rotatably inserted into the mounting groove, the second reset piece is located between the second locking piece 2028 and the inner shell 2022, the brush head 202 also includes a cleaning structure 2026 (for example, a brush), and the cleaning structure 2026 can be provided at the end of the inner shell 2022.

[0091] As previously mentioned, in some embodiments, a positioning boss 2121 is provided on the outer circumference of the cleaner head 201. The positioning boss 2121 is configured to prevent the brush head 202 from being dislodged from the cleaner head. The positioning boss 2121 can prevent the brush head 202 from being dislodged, thereby ensuring that the brush head 202 is stably positioned on the cleaner head 201 and improving the stability of the multi-function nozzle 20.

[0092] As shown in Figure 13, the positioning boss 2121 has a first side surface and a second side surface that are opposite to each other. The first side surface is close to the joint portion 2015 and is substantially perpendicular to the outer circumference of the brush head 202. In this way, the brush head 202 can be limited by the first side surface. The second side surface is away from the joint portion 2015 and gradually increases in height relative to the outer circumference of the dust collector head 201 in the direction close to the joint portion 2015. During the installation of the brush head 202, the brush head 202 can be sleeved from the end of the dust collector head 201 away from the joint portion 2015 and moved toward the joint portion 2015. When the brush head 202 passes over the positioning boss 2121, the inclined second side surface will cause the dust collector head 201 to elastically deform, thereby facilitating the brush head 202 to pass over. After the brush head 202 passes over the positioning boss 2121, the dust collector head 201 recovers and uses the positioning boss 2121 to position the brush head 202.

[0093] Of course, the brush head 202 can also be installed in other ways, for example, the brush head 202 is put on the dust collector head 201 from the end opposite to the first side, or the brush head 202 is set to be able to be installed along the radial direction of the dust collector head 201, etc. For the installation method of the brush head 202, the above description is only some embodiments of the present disclosure, and is not a limitation of the scope of protection of the present disclosure.

[0094] The brush head 202 can be sleeved onto the outer periphery of the dust collector head 201, such that the brush head 202 can be configured to move axially along the dust collector head 201 to adjust its position relative to the dust collector head 201. The brush head 202 can be stored in the dust collector head 201 in a first locking position and deployed relative to the dust collector head 201 in a second locking position. When the brush head 202 is in the second locking position, the cleaning structure 2026 can be configured to extend from the end of the dust collector head 201 to facilitate cleaning the work surface. The cleaning structure 2026 can include a brush or a flexible brush strip. Furthermore, when the brush head 202 is in the first locking position, the brush head 202 is stored in the dust collector head 201, and the end of the dust collector head 201 can be extended from the brush head 202, further extending the end of the dust collector head 201 from the cleaning structure 2026 of the brush head 202.

[0095] In some embodiments, a guide structure is provided between the brush head 202 and the cleaner head 201, and the guide structure is configured to guide the brush head 202 to move along the cleaner head 201. The guide structure can guide the movement of the brush head 202, so that the brush head 202 can move between the second locking position and the first locking position, thereby improving the stability of the multi-functional suction nozzle 20.

[0096] As shown in Figures 16 and 17, in some embodiments, the main structure 2025 includes an outer shell 2021 and an inner shell 2022. The outer shell 2021 surrounds the inner shell 2022. The cleaning structure 2026 is connected to one end of the inner shell 2022. One end of the outer shell 2021 extends out of the inner shell 2022 and surrounds the cleaning structure 2026. The outer shell 2021 can provide protection for the cleaning structure 2026, preventing it from excessive bending and extending the service life of the cleaning structure 2026. Specifically, the cleaning structure 2026 can be a brush fixedly connected to the inner shell 2022, with a portion of the brush located inside the outer shell 2021 and another portion extending out of the outer shell 2021. In this way, when the brush bends during cleaning, the portion extending out of the outer shell 2021 also bends, thereby preventing the brush from excessive bending and ensuring the service life of the brush.

[0097] As shown in Figures 16 and 17, in some embodiments, an annular rib 2024 is provided at one end of the inner shell 2022, and the annular rib 2024 surrounds the cleaning structure 2026. When the extension tube 21 is connected to the multi-functional suction nozzle 20, the joint 212 extends between the outer shell 2021 and the annular rib 2024. The cooperation between the annular rib 2024 and the outer shell 2021 can facilitate the cooperation between the brush head 202 and the extension tube 21, improve the stability of the cooperation between the extension tube 21 and the brush head 202, and reduce air leakage, improve energy efficiency, and save energy and protect the environment.

[0098] The brush head 202 includes an outer shell 2021 and an inner shell 2022. The outer shell 2021 surrounds the inner shell 2022. A portion of the extrusion member 2027 is disposed between the outer shell 2021 and the inner shell 2022. When the extension tube 21 is connected to the multi-function nozzle 20, the extrusion member 2027 is driven. This allows the extension tube 21 to easily actuate the extrusion member 2027, driving the extrusion member 2027 to move, thereby unlocking the cleaner head 201 and the brush head 202.

[0099] According to the embodiment of the present disclosure, the suction assembly 2 includes a multifunctional suction nozzle 20 and an extension tube 21 that can be assembled with each other. The multifunctional suction nozzle 20 is the multifunctional suction nozzle 20 of the aforementioned vacuum cleaner. The extension tube 21 has a coupling portion 212. When the multifunctional suction nozzle 20 is coupled with the extension tube 21, the coupling portion 212 abuts against the extrusion piece 2027 to release the lock between the dust collector head 201 and the brush head 202.

[0100] Among them, the extension tube 21 may include a rod 20161 and a joint 212, the joint 212 is used to releasably connect the extension tube 21 to the multi-functional suction nozzle 20, and the extension tube 21 can be used as a part connecting the vacuum cleaner main unit 1 and the floor brush assembly 3, generally as a separate accessory, one end of which may have a joint part (i.e., the joint 212) connected to the multi-functional suction nozzle 20, and the other end may have a joint part connected to the floor brush assembly 3.

[0101] When cleaning the floor, the user can connect the vacuum cleaner main unit 1 to the floor brush assembly 3 via the extension tube 21. When cleaning a tabletop, the user generally uses the brush head 202 of the multifunctional suction nozzle 20 for its sweeping function. When cleaning the gap between a seat and a backrest or other crevices, the user generally uses the suction head 201 of the multifunctional suction nozzle 20. Therefore, in the suction assembly 2 of the present disclosure, the multifunctional suction nozzle 20 can be taken out separately and used as a flat suction piece or a sweeping attachment. The multifunctional suction nozzle 20 and the extension tube 21 can be combined to form a complete connecting pipe, which can be connected to the floor brush assembly 3 to clean surfaces such as floors or carpets.

[0102] For example, when the extension tube 21 is connected to the multi-function nozzle 20, the extrusion piece 2027 in the second locking position can be driven to move to unlock the brush head 202 and the dust collector head 201, and drive the brush head 202 to the first locking position. In this way, when the suction assembly 2 switches from using the brush head 202 to clean the work surface to using the extension tube 21, the extension tube 21 can be directly installed on the multi-function nozzle 20, facilitating the rapid assembly of the extension tube 21 and the multi-function nozzle 20, thereby improving the assembly efficiency and stability of the suction assembly 2.

[0103] In addition, in some other embodiments of the present disclosure, the suction assembly 2 of the vacuum cleaner includes: a multifunctional suction nozzle 20, including a dust collector head 201 and a brush head 202, the brush head 202 is movable relative to the dust collector head 201, the brush head 202 includes a main structure 2025 and a cleaning structure 2026, and the cleaning structure 2026 at least partially protrudes from the main structure 2025; an extension tube 21, including a suction inlet and a joint 212, the joint 212 is detachably connected to the multifunctional suction nozzle 20, wherein when the extension tube 21 is connected to the multifunctional suction nozzle 20, the cleaning structure 2026 is stored in the extension tube 21, and at least part of the main structure 2025 is outside the extension tube 21.

[0104] As shown in Figures 18 and 19, according to the suction assembly 2 of the embodiment of the present disclosure, when the brush head 202 is in the second locking position, the second locking piece 2028 on the brush head 202 is locked with the first positioning groove 2013 of the dust collector head 201. At this time, if the multi-functional suction nozzle 20 and the extension tube 21 are to be installed together, the locking structure must be unlocked before the dust collector head 201 can be inserted into the extension tube 21. For this purpose, the discloser has designed an unlocking structure.

[0105] Specifically, a movable extrusion piece 2027 and the third reset piece are provided between the outer shell 2021 and the inner shell 2022 of the brush. When the extension tube 21 and the multi-functional suction nozzle 20 are installed, the end portion of the extension tube 21 (the joint 212) abuts against the extrusion piece 2027, and then the second locking piece 2028 is pushed up by the extrusion piece 2027, so that the second locking piece 2028 is unlocked from the first positioning groove 2013. After unlocking, the joint 212 continues to push the brush head 202 to move along the dust collector head 201. When the brush head 202 moves to the first locking position on the dust collector head 201, the locking hook of the extension tube 21 cooperates with the first positioning groove 2013 of the dust collector head 201 to lock (an additional positioning structure can also be provided for locking the extension tube 21). At this time, the extension tube 21 and the multi-functional suction nozzle 20 are installed in place. With this arrangement, the user does not need to retract the brush head 202 first and then assemble it with the extension tube 21. The multifunctional suction nozzle 20 and the extension tube 21 can be directly assembled. Under the action of the joint 212 and the extrusion piece 2027, the dust collector head 201 can be automatically unlocked, so that the dust collector head 201 automatically retracts during the matching process of the multifunctional suction nozzle 20 and the extension tube 21, thereby improving the user experience.

[0106] 20 to 23 , the present disclosure further provides a vacuum cleaner, comprising a vacuum cleaner main unit 1, a floor brush assembly 3, and a suction assembly 2 according to the aforementioned vacuum cleaner. The vacuum cleaner has a first connection state and a second connection state. As shown in FIG20 and FIG21 , in the first connection state, the multifunctional suction nozzle 20 and the extension tube 21 are matched with each other, the multifunctional suction nozzle 20 is connected to the vacuum cleaner main unit 1, and the extension tube 21 is connected to the floor brush assembly 3; as shown in FIG10 and FIG11 , in the second connection state, the multifunctional suction nozzle 20 and the extension tube 21 are separated from each other, and the multifunctional suction nozzle 20 is connected to the vacuum cleaner main unit 1.

[0107] In the vacuum cleaner disclosed herein, the multifunctional suction nozzle 20 can be used as a part of the suction assembly 2 when not in use, and can be assembled with the extension tube 21 for use, without affecting the installation and use of the extension tube 21. It also avoids the problem of needing to remove the multifunctional suction nozzle 20 or the brush head 202 and place them elsewhere when installing the extension tube 21. The suction assembly 2 is easy to use and avoids the loss or jamming of parts. The multifunctional suction nozzle 20 can adjust the working mode by moving the brush head 202 when in use; the brush head 202 can be displayed through the exposed brush head 202, and the brush head 202 can be easily separated from the extension tube 21.

[0108] As shown in Figures 20 to 23, the present disclosure also provides a vacuum cleaner, which includes a vacuum cleaner main unit 1 and a multifunctional suction nozzle 20 that can be directly or indirectly connected to the vacuum cleaner main unit 1, the multifunctional suction nozzle 20 includes a dust collector head 201 and a brush head 202, the brush head 202 has a first locking position that is retracted relative to the dust collector head 201 and a second locking position that is extended relative to the dust collector head 201, the brush head 202 does not work in the first locking position; in the second locking position, the brush head 202 can work, and the brush head 202 and the dust collector head 201 are locked with each other to allow the brush head 202 to work.

[0109] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A multifunctional suction nozzle (20) for a vacuum cleaner, comprising a vacuum head (201) and a brush head (202), The vacuum cleaner head (201) comprises a tubular main body (2011) and an adapter (2012) connected to the main body (2011); the brush head (202) is sleeved on the main body (2011); and the adapter (2012) is detachably connected to the vacuum cleaner main body (1); The brush head (202) has a first locking position close to the adapter (2012) and a second locking position away from the adapter (2012) on the main body (2011); The brush head (202) is provided with a first locking piece (2020), the main body (2011) is provided with a first matching portion (20201) at the first locking position, and the main body (2011) is provided with a second matching portion (20202) at the second locking position, and the first locking piece (2020) is releasably connected to the first matching portion (20201) or the second matching portion (20202).

2. The multifunctional suction nozzle (20) according to claim 1, wherein: The brush head (202) comprises an outer shell (2021) and an inner shell (2022), wherein the inner shell (2022) is inserted into the outer shell (2021) along one end of the outer shell (2021), and the first locking member (2020) and the first reset member are provided between the outer shell (2021) and the inner shell (2022), wherein the first locking member (2020) comprises a hook (20201), and the hook (20201) protrudes from the inner shell (2022) and can be selectively connected to the first matching portion (20201) or the second matching portion (20202).

3. The multifunctional suction nozzle (20) according to claim 2, wherein: An unlocking key (2023) is provided on the surface of the outer shell (2021) of the brush head (202), and the unlocking key (2023) includes an actuating portion (20231) and a pressing portion (20232), wherein the pressing portion (20232) passes through the outer shell (2021) and abuts against the first locking member (2020), and when a user presses the actuating portion (20231), the pressing portion (20232) slides along the surface of the inner shell (2022) and pushes the first locking member (2020) to move in a direction away from the main body (2011); the first reset member is located between the outer shell (2021) and the first locking member (2020) to push the first locking member (2020) to move in a direction close to the main body (2011) after the pressing is released.

4. The multifunctional suction nozzle (20) according to claim 2 or 3, wherein: A stopper assembly is also provided between the outer shell (2021) and the inner shell (2022) to prevent the brush head (202) from being separated from the main body (2011) when the brush head (202) moves from the first locking position toward the second locking position; The surface of the main body (2011) is provided with a limiting matching portion (20204) that matches with the stop assembly.

5. The multifunctional suction nozzle (20) according to claim 4, wherein: The stop assembly includes a pawl (20205) and a second reset member, wherein the pawl (20205) pivots relative to the inner shell (2022) and is biased against the surface of the inner shell (2022) by the second reset member, and the pawl (20205) is designed to enter the limit fitting portion (20204) before the brush head (202) is disengaged from the main body (2011) when the brush head (202) moves from the first locking position toward the second locking position.

6. The multifunctional suction nozzle (20) according to any one of claims 2 to 5, wherein: A brush is provided at the end of the inner shell (2022), and the brush is arranged to extend substantially parallel to the longitudinal axis direction of the main body (2011). A soft rubber strip (20211) is provided at the end of the brush head (202), and the soft rubber strip (20211) at least partially extends around the brush.

7. The multifunctional suction nozzle (20) according to claim 6, wherein: The soft rubber strip (20211) includes an outer ring (202112) and an inner ring (202111), wherein the inner ring (202111) is arranged at the end of the inner shell (2022) and surrounds the brush to prevent the brush from warping outward, and the outer ring (202112) is arranged at the end of the outer shell (2021) and is substantially flush with the outer shell (2021) to prevent the edge of the outer shell from scratching the surface to be cleaned when the brush head (202) is used for cleaning.

8. The multifunctional suction nozzle (20) according to any one of claims 1 to 7, wherein: The main body (2011) of the dust collector head (201) includes at least one guide surface (20110), and the brush head (202) is provided with a matching surface (20200) matching with the guide surface (20110), and the guide surface (20110) matches with the matching surface (20200) to guide the movement of the brush head (202) in the main body (2011).

9. The multifunctional suction nozzle (20) according to any one of claims 1 to 8, wherein: When in the first locking position, the brush head (202) is retracted relative to the dust collector head (201) so that the brush head (202) does not work; when in the second locking position, the brush head (202) is unfolded relative to the dust collector head (201) and locked with each other so that the brush head (202) works, wherein an extrusion piece (2027) is provided at the end of the brush head (202), and the extrusion piece (2027) is used to move under the action of an external force to release the lock between the brush head (202) and the dust collector head (201).

10. The multifunctional suction nozzle (20) according to claim 9, wherein: The extrusion member (2027) is configured to unlock the brush head (202) and the dust collector head (201) when moving along a first direction, wherein the first direction is from the second locking position to the first locking position, and is the moving direction of the brush head (202) relative to the dust collector head (201).

11. The multifunctional suction nozzle (20) according to claim 10, wherein: The brush head (202) comprises a main body structure (2025) and a cleaning structure (2026), wherein the cleaning structure (2026) is connected to one end of the main body structure (2025), and the extrusion member (2027) extends from the one end of the main body structure (2025) to be driven by a docking device along the first direction.

12. The multifunctional suction nozzle (20) according to any one of claims 9 to 11, wherein: The multifunctional suction nozzle (20) further comprises a third resetting member, wherein the third resetting member applies an elastic force to the extrusion member (2027) along a second direction, wherein the second direction is from the first locking position to the second locking position, and is the moving direction of the brush head (202) relative to the dust collector head (201).

13. The multifunctional suction nozzle (20) according to any one of claims 9 to 12, wherein: The multifunctional suction nozzle (20) further comprises a second locking member (2028) for locking and unlocking the brush head (202) and the dust collector head (201); the extrusion member (2027) drives the second locking member (2028) under the action of an external force to release the lock of the brush head (202) and the dust collector head (201).

14. The multifunctional suction nozzle (20) according to claim 13, wherein: The second locking member (2028) is rotatably connected to the brush head (202) and has a wedge-shaped structure (20282) and a locking structure (20283). The wedge-shaped structure (20282) and the locking structure (20283) are respectively arranged on both sides of the rotating shaft. The locking structure (20283) is used to lock the brush head (202) and the dust collector head (201). The extrusion member (2027) cooperates with the wedge-shaped structure (20282) in transmission. When subjected to external force, the wedge-shaped structure (20282) is pressed to release the lock of the brush head (202) and the dust collector head (201).

15. The multifunctional suction nozzle (20) according to claim 13 or 14, wherein: The second locking member (2028) is rotatably connected to the brush head (202) and comprises a pressing structure (20281) and a locking structure (20283); the pressing structure (20281) and the locking structure (20283) are respectively arranged on both sides of the rotating shaft; the locking structure (20283) is used to lock the brush head (202) and the dust collector head (201); the pressing structure (20281) is used to be pressed to release the lock of the brush head (202) and the dust collector head (201).

16. The multifunctional suction nozzle (20) according to any one of claims 9 to 15, wherein: One end of the vacuum cleaner head (201) is connected to a joint portion (2015), and a positioning boss (2121) is provided on the outer peripheral surface of the other end; the joint portion (2015) and the positioning boss (2121) cooperate to restrict the brush head (202) from falling out of the vacuum cleaner head (201).

17. The multifunctional suction nozzle (20) according to any one of claims 9 to 16, wherein: The brush head (202) is sleeved on the outer circumference of the dust collector head (201).

18. The multifunctional suction nozzle (20) according to any one of claims 9 to 17, wherein: The brush head (202) comprises an outer shell (2021) and an inner shell (2022), wherein the outer shell (2021) surrounds the inner shell (2022), a brush is provided at one end of the inner shell (2022), and the extrusion member (2027) is located between the outer shell (2021) and the inner shell (2022) or abuts against the end of the inner shell (2022).

19. A multifunctional suction nozzle (20) for a vacuum cleaner, comprising a vacuum cleaner head (201) and a brush head (202), wherein the vacuum cleaner head (201) comprises a tubular main body (2011) and an adapter (2012) connected to the main body (2011), the brush head (202) is sleeved on the main body (2011), and the adapter (2012) is detachably connected to a vacuum cleaner main body (1); The brush head (202) has a first position close to the adapter (2012) and a second position away from the adapter (2012) on the main body (2011); The brush head (202) is provided with a first positioning portion, the main body (2011) is provided with a first matching portion at the first position, and the main body (2011) is provided with a second matching portion (20202) at the second position, and the first positioning portion and the second matching portion (20202) are releasably connected.

20. The multifunctional suction nozzle (20) according to claim 19, wherein the first positioning portion and the first matching portion are interference fit.

21. A suction assembly (2) for a vacuum cleaner, the suction assembly (2) comprising the multifunctional suction nozzle (20) according to any one of claims 1 to 20, and An extension tube (21) is arranged to be push-fitted onto the multifunctional suction nozzle (20), so that when the extension tube (21) is connected to the multifunctional suction nozzle (20), the brush head (202) abuts against the extension tube (21), and at least a portion of the main body (2011) of the dust collector head (201) is stored in the extension tube (21).

22. The suction assembly (2) according to claim 21, wherein: The extension tube (21) is provided with a third locking piece (2100), and the main body (2011) of the vacuum cleaner head (201) is provided with a third matching portion (20203). When the multifunctional suction nozzle (20) and the extension tube (21) are connected, the third locking piece (2100) is locked and matched with the third matching portion (20203).

23. The suction assembly (2) according to claim 21, wherein: The extension tube (21) has a joint portion (212); when the multifunctional suction nozzle (20) is joined to the extension tube (21), the joint portion (212) abuts against an extrusion member (2027) to release the lock between the brush head (202) and the dust collector head (201).

24. A vacuum cleaner, comprising a vacuum cleaner main unit (1), a floor brush assembly (3), and a suction assembly (2) according to any one of claims 21 to 23, wherein the vacuum cleaner main unit (1) and the floor brush assembly (3) are connected via the suction assembly (2).

25. A vacuum cleaner, comprising a vacuum cleaner main unit (1), a floor brush assembly (3) and a suction assembly according to any one of claims 21 to 23, wherein the vacuum cleaner has a first connection state and a second connection state. In the first connection state, the multifunctional suction nozzle (20) and the extension tube (21) are connected to each other, the multifunctional suction nozzle (20) is connected to the vacuum cleaner main unit (1), and the extension tube (21) is connected to the floor brush assembly (3); In the second connection state, the multifunctional suction nozzle (20) and the extension tube (21) are separated from each other, and the multifunctional suction nozzle (20) is connected to the vacuum cleaner main unit (1).

26. A vacuum cleaner, comprising a vacuum cleaner main unit (1) and a multifunctional suction nozzle (20) which can be directly or indirectly connected to the vacuum cleaner main unit (1), wherein the multifunctional suction nozzle (20) comprises a dust collector head (201) and a brush head (202), wherein the brush head (202) has a first state of being retracted relative to the dust collector head (201) and a second state of being expanded relative to the dust collector head (201), wherein the brush head (202) is not operational in the first state; and the brush head (202) is operational in the second state, and the brush head (202) is locked with the dust collector head (201) to allow the brush head (202) to operate.

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