Floor brush assembly of dust collector

Abstract

The utility model discloses a floor brush assembly of a dust collector. A dust collection pipe joint comprises a vertical part extending front and back and a transverse part extending left and right; the transverse part is provided with a transverse hole channel with a smooth hole wall, the first side of the transverse hole channel is closed, and the second side extends to the end of the transverse part to form an inner air inlet. A dust collection opening is formed in the bottom of the floor brush shell; the floor brush shell is provided with a mounting groove with an opening in the upper side; the transverse part is rotationally connected into the mounting groove; the inner air inlet of the transverse part extends into the groove wall on one side of the mounting groove; an air duct is arranged in the floor brush shell, the first end of the air duct communicates with the dust suction port, the second end of the air duct extends to one side of the mounting groove, and the inner air inlet of the transverse part communicates with the air duct; installation of a corrugated hose is omitted, the whole structure is simpler, the dust collection pipe connector forms an airflow channel, the inner wall of the dust collection pipe connector is smooth and not prone to deformation, it can be guaranteed that air circulates smoothly in the dust collector floor brush assembly, and therefore the dust collection efficiency is improved, and cleaning and maintaining are more facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaners, in particular to a floor brush assembly of a vacuum cleaner. Background Art

[0002] As an important part of the vacuum cleaner, the floor brush assembly of the vacuum cleaner plays a vital role in improving the cleaning effect and user experience of the vacuum cleaner. In recent years, with the advancement of technology and the increase in consumer demand, the patented technology of the vacuum cleaner floor brush assembly has also been continuously developed and innovated.

[0003] Patent CN117243523A discloses a multifunctional vacuum cleaner floor brush, which includes a floor brush housing, a connector for connecting a vacuum cleaner, and an airflow channel arranged between the floor brush housing and the connector. The airflow channel is a corrugated hose structure. The connector and the floor brush housing are rotatably connected, and the airflow channel is wrapped inside the connection between the connector and the floor brush housing. One end of the airflow channel is inserted into the hollow tube of the connector, and the other end of the airflow channel extends into the air duct of the floor brush housing.

[0004] Patent CN117243522A also discloses a vacuum cleaner floor brush, which includes a floor brush body and a large wheel. A floor brush connector is provided on one side of the floor brush body, and connecting parts are provided on both sides of the floor brush connector. The large wheel is rotatably connected to the connecting part, and the floor brush connector is used to connect a corrugated hose.

[0005] Patent CN117100148A also discloses a vacuum cleaner floor brush, the middle of the floor brush housing is a vent, the top of the floor brush housing is provided with a bellows connected to the vent, and the top of the floor brush housing is connected to a connecting housing sleeved on the bellows via a rotating shaft. By providing the bellows and the connecting housing, the floor brush housing is provided with multiple degrees of freedom for movement in multiple directions, which is convenient for use.

[0006] Although the corrugated hose has certain application advantages in the vacuum cleaner floor brush assembly, it also has obvious disadvantages, including:

[0007] Easy to deform under pressure: The characteristic of the corrugated hose is its flexibility, which allows it to adapt to various angles and shapes. However, this flexibility also brings a potential problem, that is, when subjected to greater pressure or external force, the corrugated hose is prone to deformation. This deformation may cause the vacuum cleaner's working efficiency to decline, or even affect the normal operation of the vacuum cleaner.

[0008] Easy to break: The material and structure of the corrugated hose make it more likely to break or tear when facing sharp objects or strong friction. Such damage will not only affect the vacuum cleaner's suction effect, but may also cause damage to other parts inside the vacuum cleaner.

[0009] Difficult to clean and maintain: Due to the special shape and structure of the corrugated hose, it may be easier to accumulate dust and dirt. This not only increases the difficulty of cleaning, but may also cause the vacuum cleaner to perform poorly during use. In addition, it is also difficult to clean the inside of the corrugated hose, which may affect the long-term use of the vacuum cleaner.

[0010] Poor air tightness and difficulty in assembly: Since the corrugated hose needs to be connected to the floor brush body and the dust suction pipe respectively, and needs to be assembled in the wrapped connection between the two, it is difficult to assemble and the connection firmness is limited, which not only increases the complexity of the process but also poses a hidden danger to the service life of the equipment and the dust suction efficiency.

[0011] Corrugation affects vacuuming efficiency: When the corrugated hose is bent or deformed, it may affect the air circulation to a certain extent, thus reducing the vacuuming efficiency. This effect may be more obvious in occasions that require efficient vacuuming. Utility Model Content

[0012] In view of the specific structural deficiencies of the prior art, the utility model provides a floor brush assembly for a vacuum cleaner which is convenient to assemble, has a good dust collection effect, has a long service life, and is easy to clean and maintain.

[0013] The technical solution adopted by the utility model to solve the above technical problems is: a vacuum cleaner floor brush assembly, including a floor brush body and a dust suction pipe joint;

[0014] The dust suction pipe joint includes a vertical portion extending frontward and rearward and a horizontal portion extending leftward and rightward;

[0015] The transverse portion is provided with a transverse channel with a smooth hole wall, and the vertical portion is provided with a vertical channel that penetrates the transverse channel; the first side of the transverse channel is closed and the second side extends to the end of the transverse portion to form an inner air inlet;

[0016] The floor brush body comprises a floor brush housing, and a dust suction port is provided at the bottom of the floor brush housing;

[0017] A mounting groove with an upper opening is provided in the center of the rear side of the floor brush housing in the left-right direction;

[0018] The transverse part is rotatably connected in the mounting groove; the rotation axis of the transverse part is consistent with the central axis of the transverse part; the inner air inlet of the transverse part extends into a side wall of the mounting groove;

[0019] An air duct is provided in the floor brush housing, a first end of the air duct is connected to the dust suction port, a second end of the air duct extends to one side of the mounting groove, and an inner air inlet of the transverse portion is connected to the air duct.

[0020] The preferred technical solution adopted by the utility model to solve the above technical problems is: the two sides of the installation groove include a first supporting wall and a second supporting wall;

[0021] The first supporting wall and the second supporting wall are both provided with circular rotating holes;

[0022] Both ends of the transverse portion are provided with annular connecting portions matching the rotating hole;

[0023] The connecting portion is placed in the circular rotating hole, and the first arc surface of the connecting portion cooperates with the first arc surface of the rotating hole, so that the transverse portion is rotatably connected to the mounting groove.

[0024] The preferred technical solution adopted by the utility model to solve the above technical problems is: the transverse part includes a central cylindrical main body;

[0025] The connecting portion is an annular protrusion whose outer diameter is smaller than the outer diameter of the main body;

[0026] An annular step structure is formed between the connecting portion and the main body portion, and the end surface of the main body portion forms an annular limiting surface surrounding the connecting portion; the annular limiting surface is limited on the inner wall of the mounting groove.

[0027] The preferred technical solution adopted by the utility model to solve the above technical problems is: a rear guide limit surface in the form of an arc is provided on the rear side of the installation groove, and the arc extends from the bottom to both sides;

[0028] The rear guide limit surface cooperates with the vertical portion to guide the side surface of the vertical portion during the rotation of the lateral portion, and limits the lower limit of the rotation of the lateral portion by contacting the lower surface of the vertical portion.

[0029] The preferred technical solution adopted by the utility model to solve the above technical problems is: the bottom wall of the floor brush housing is provided with an expansion wall extending backwards;

[0030] The expansion wall is located in the center of the floor brush housing in the left-right direction;

[0031] The left-right width of the expansion wall is at least 1.5 times smaller than the left-right width of the vertical portion.

[0032] The preferred technical solution adopted by the utility model to solve the above technical problems is: the floor brush housing comprises an upper housing and a lower housing which are buckled with each other;

[0033] The upper shell comprises a shell front wall on the front side and a longitudinal inner surrounding wall;

[0034] A dust suction port is formed between the front end of the lower shell and the front end of the upper shell;

[0035] The lower end of the front wall of the shell is located in front of the suction port;

[0036] The longitudinal inner surrounding wall surrounds the contour line of the lower shell to form a shell cavity;

[0037] An external air inlet leading to the air duct is arranged on the front side of the shell cavity.

[0038] The preferred technical solution adopted by the utility model to solve the above technical problems is: the air duct is located in the shell cavity, and the air duct includes a front air duct section and a side air duct section located on one side of the shell cavity;

[0039] The front air duct section extends in the left-right direction and is located behind the outer air inlet;

[0040] The side air duct section extends in the front-to-back direction and is on the same side as the second side of the transverse channel;

[0041] The front air duct section and the side air duct section are connected via an arc air duct section.

[0042] The preferred technical solution adopted by the utility model to solve the above technical problem is: the floor brush housing is provided with a transparent visible portion, and the transparent visible portion is located above the dust suction port.

[0043] The preferred technical solution adopted by the utility model to solve the above technical problems is: the front wall of the shell includes an outward convex arc section located on the front side and bending upward from front to rear;

[0044] The rear end of the outwardly convex arc segment extends from the rear side of the front edge of the lower shell body, and the outwardly convex arc segment is a transparent visible portion.

[0045] The preferred technical solution adopted by the utility model to solve the above technical problems is: the front edge of the lower shell is in a concave arc shape, and the front side of the longitudinal inner surrounding wall is in a concave arc shape consistent with the front edge of the lower shell.

[0046] The technical solution adopted by the utility model to solve the above technical problems is: a vacuum cleaner floor brush assembly, including a floor brush body and a dust suction pipe joint;

[0047] The dust suction pipe joint includes a vertical portion extending frontward and rearward and a horizontal portion extending leftward and rightward;

[0048] The horizontal portion is provided with a horizontal hole, the vertical portion is provided with a vertical hole, and the horizontal hole is connected with the vertical hole;

[0049] The first side of the transverse channel is closed and the second side extends to the end of the transverse portion to form an inner air inlet;

[0050] The floor brush body comprises a floor brush housing, and a dust suction port is provided at the bottom of the floor brush housing;

[0051] A mounting groove with an upper opening is provided in the center of the rear side of the floor brush housing in the left-right direction;

[0052] The transverse part is rotatably connected in the mounting groove; the rotation axis of the transverse part is consistent with the central axis of the transverse part; the inner air inlet of the transverse part extends into a side wall of the mounting groove;

[0053] An air duct is provided in the floor brush housing, a first end of the air duct is connected to the dust suction port, a second end of the air duct extends to one side of the mounting groove, and an inner air inlet of the transverse portion is connected to the air duct;

[0054] The bottom wall of the floor brush housing is provided with an expansion wall extending backwards; the expansion wall is located in the center of the floor brush housing in the left-right direction; the expansion wall is used to prevent the front of the floor brush body from tilting upwards when the floor brush body is dragged back.

[0055] The preferred technical solution adopted by the utility model to solve the above technical problems is: the two sides of the installation groove include a first supporting wall and a second supporting wall;

[0056] The first supporting wall and the second supporting wall are both provided with circular rotating holes;

[0057] The transverse portion includes a cylindrical main body portion in the middle and connecting portions at both ends;

[0058] The connecting portion is an annular protrusion whose outer diameter is smaller than the outer diameter of the main body;

[0059] The connecting portion is placed in the circular rotating hole, and the first arc surface of the connecting portion cooperates with the first arc surface of the rotating hole, so that the transverse portion is rotatably connected to the mounting groove;

[0060] An annular step structure is formed between the connecting portion and the main body portion, and the end surface of the main body portion forms an annular limiting surface surrounding the connecting portion; the annular limiting surface is limited on the inner wall of the mounting groove.

[0061] The preferred technical solution adopted by the utility model to solve the above technical problems is: the floor brush housing includes an upper housing and a lower housing;

[0062] The upper shell comprises a shell front wall on the front side and a longitudinal inner surrounding wall;

[0063] The longitudinal inner surrounding wall surrounds the contour line of the lower shell to form a shell cavity;

[0064] The dust suction port is formed between the lower end of the shell front wall and the front edge of the lower shell;

[0065] The front side of the shell cavity is provided with an external air inlet leading to the air duct;

[0066] The air duct is located in the shell cavity, and the air duct includes a front air duct section and a side air duct section located on one side of the shell cavity;

[0067] The front air duct section extends in the left-right direction and is located behind the outer air inlet;

[0068] The side air duct section extends in the front-to-back direction and is on the same side as the second side of the transverse channel;

[0069] The front air duct section and the side air duct section are connected via an arc air duct section.

[0070] The preferred technical solution adopted by the utility model to solve the above technical problems is: the front wall of the shell includes an outward convex arc section located on the front side and bending upward from front to rear;

[0071] The outwardly convex arc section is provided with a transparent visible portion; the transparent visible portion is located above the dust suction port.

[0072] The preferred technical solution adopted by the utility model to solve the above technical problems is: a strip-shaped notch is provided on the lower side of the front wall of the shell to form an auxiliary air suction port on the front side of the floor brush shell;

[0073] The bottom wall of the floor brush housing is provided with a connecting member for connecting with a mop.

[0074] Compared with the prior art, the utility model has the advantages that: through this arrangement, the rotation requirements of the dust suction pipe can be met, and the installation of the corrugated hose is omitted, the entire structure is simpler, and the cost caused by the complex structure and complex process of the traditional technology is saved. In addition, the dust suction pipe joint forms an air flow channel, and its inner wall is smooth and not easy to deform, which can ensure that the air flows smoothly inside the floor brush assembly of the vacuum cleaner, thereby improving the dust suction efficiency and being more conducive to cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0076] Figure 1 An overall diagram of the floor brush assembly of a vacuum cleaner Figure 1 ;

[0077] Figure 2 An overall diagram of the floor brush assembly of a vacuum cleaner Figure 2 ;

[0078] Figure 3 An overall diagram of the floor brush assembly of a vacuum cleaner Figure 3 ;

[0079] Figure 4 An overall diagram of the floor brush assembly of a vacuum cleaner Figure 4 ;

[0080] Figure 5 An overall diagram of the floor brush assembly of a vacuum cleaner Figure 5 ;

[0081] Figure 6 Schematic diagram of the floor brush assembly of a vacuum cleaner Figure 1 ;

[0082] Figure 7 Schematic diagram of the floor brush assembly of a vacuum cleaner Figure 2 ;

[0083] Figure 8 Schematic diagram of the floor brush assembly of a vacuum cleaner Figure 3 ;

[0084] Fig. 9 Schematic diagram of the floor brush assembly of a vacuum cleaner Figure 4 ;

[0085] Fig.10 Schematic diagram of the floor brush assembly of a vacuum cleaner Figure 5 ;

[0086] Fig.11 Schematic diagram of the floor brush assembly of a vacuum cleaner Figure 6 . DETAILED DESCRIPTION

[0087] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0088] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0089] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0090] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0091] like Figure 1-4 As shown, the utility model provides a vacuum cleaner floor brush assembly, including a floor brush body 100 and a dust suction pipe joint 200. Consistent with the prior art, a dust suction port C1 is provided at the bottom of the floor brush body 100, and the floor brush body 100 is rotatably connected to the dust suction pipe joint 200, and the dust suction pipe joint 200 is used to connect the dust suction pipe or is integrally formed with the dust suction pipe itself. When the dust suction pipe is connected to the vacuum main unit, when the bottom surface of the floor brush body 100 contacts the surface to be cleaned, the operation of the vacuum main unit can suck the dust on the surface to be cleaned into the dust collecting chamber of the vacuum main unit.

[0092] Different from the prior art, this patent eliminates the structural feature of the corrugated hose as the air flow channel through structural optimization, thereby eliminating the problems of low service life, difficult assembly, poor dust collection effect, and difficulty in cleaning and maintenance caused by the use of corrugated hoses.

[0093] Specifically, Figure 1 , 3 As shown in Figures 6 and 7, the dust suction pipe joint 200 includes a vertical portion 201 extending forward and backward and a horizontal portion 202 extending left and right. The vertical portion 201 here can be a part of the dust suction pipe itself, or it can be a part of an independent joint connected to the dust suction pipe that is coaxial with the dust suction pipe. For the latter, the vertical portion 201 can be directly connected to the dust suction pipe or it can be connected to the dust suction pipe through another sleeve portion 203 coaxial with the vertical portion 201 as shown in this embodiment.

[0094] like Figure 6 , 7 As shown, the horizontal portion 202 is provided with a horizontal channel S1, and the vertical portion 201 is provided with a vertical channel S2, and the horizontal channel S1 is connected with the vertical channel S2. The first side m of the horizontal channel S1 is closed and the second side n extends to the end of the horizontal portion 202 to form an inner air inlet C2. The horizontal channel S1 and the vertical channel S2 together form an air flow channel in the dust collection pipe joint 200.

[0095] In this embodiment, the transverse portion 202 serves as a connector for rotationally connecting the entire dust suction pipe joint 200 and is also a part of the entire air flow channel from the floor brush body 100 to the dust suction pipe.

[0096] Furthermore, if Figure 1-8As shown, the floor brush body 100 includes a floor brush housing 101, and a dust suction port C1 is provided at the bottom of the floor brush housing 101. A mounting groove 1 with an upper opening is provided in the center of the rear side of the floor brush housing 101 in the left-right direction. The transverse portion 202 is rotatably connected in the mounting groove 1; the rotation axis of the transverse portion 202 is consistent with the central axis of the transverse portion 202.

[0097] The inner air inlet C2 of the transverse portion 202 extends into the groove wall of one side of the installation groove 1. An air duct P is provided in the floor brush housing 101, the first end of the air duct P is connected to the dust suction port C1, the second end of the air duct P extends to one side of the installation groove 1, and the inner air inlet C2 of the transverse portion 202 is connected to the air duct P.

[0098] This arrangement can satisfy the rotation requirements of the vacuum tube and save the installation of the corrugated hose, making the structure simpler and saving the cost caused by the complex structure and process of the traditional technology. The vacuum tube joint 200 forms an air flow channel with a smooth inner wall that is not easily deformed, ensuring smooth air flow inside the vacuum cleaner brush assembly, thereby improving the vacuuming efficiency and facilitating cleaning and maintenance.

[0099] like Figure 6-9 As shown, in this embodiment, the two sides of the installation groove 1 include a first support wall 11 and a second support wall 12; the first support wall 11 and the second support wall 12 are both provided with a circular rotation hole f. Both ends of the transverse portion 202 are provided with an annular connection portion 2 that matches the rotation hole f; the connection portion 2 is placed in the circular rotation hole f, and the first arc surface of the connection portion 2 cooperates with the second arc surface of the rotation hole f, so that the transverse portion 202 is rotationally connected to the installation groove 1. In this way, the assembly process of the rotation connection is completed, and the airflow channel of the dust suction pipe joint 200 is connected to the air duct P in the floor brush housing 101. It can be seen that the entire assembly process is very simple, and the continuity of the airflow channel of the entire assembly is good, which is conducive to improving the dust collection efficiency.

[0100] like Fig. 9 As shown, in this embodiment, the transverse portion 202 includes a cylindrical main body portion 3 in the middle. The connecting portion 2 is an annular protrusion with an outer diameter smaller than the outer diameter of the main body portion 3. Of course, this is only a preferred design, and the transverse portion 202 can also be other structures. However, the cylindrical structure and the circular cross-section transverse channel S1 arranged therein are more conducive to rotation and smooth airflow, which is beneficial to reducing wind resistance.

[0101] Based on this design, an annular step structure is formed between the connecting portion 2 and the main body 3, and the end surface of the main body 3 forms an annular limiting surface e surrounding the connecting portion 2; the annular limiting surface e is limited on the inner wall of the installation groove 1. The annular limiting surface e not only prevents the dust suction pipe joint 200 from lateral movement, but also has the function of enhancing the sealing performance.

[0102] Preferably, a sealing member is provided between the connecting portion 2 located on the second side n of the transverse portion 202 and the corresponding side supporting wall, which ensures the air tightness of the floor brush housing 101 and the transverse section without affecting the rotation of the dust suction pipe joint 200 .

[0103] like Figure 6 As shown, the rear side of the mounting groove 1 is provided with a rear guide limit surface g in the form of an arc, and the arc extends from the bottom to both sides. During the rotation of the horizontal portion 202, the two inner side surfaces of the rear guide limit surface g cooperate with the two outer side surfaces of the vertical portion 201 to guide the side surfaces of the vertical portion 201. Of course, the two inner side surfaces of the rear guide limit surface g do not conflict with the two outer side surfaces of the vertical portion 201, but the existence of the rear guide limit surface g reduces the space for the vertical portion 201 to move left and right, thereby avoiding the lateral movement of the dust collection pipe joint 200. In addition, the rear guide limit surface g also limits the lower limit of the rotation of the horizontal portion 202 by conflicting with the lower surface of the vertical portion 201.

[0104] like Figure 2 , 7 As shown in Figures 10 and 10, the bottom wall of the floor brush housing 101 is provided with an expansion wall 4 extending backward; the expansion wall 4 is located in the center of the floor brush housing 101 in the left-right direction. It should be understood that the transverse portion 202 is located at the rear of the floor brush housing 101, and when the floor brush body 100 is dragged back, the front of the floor brush is prone to tilt upward. The presence of the expansion wall 4 not only increases the contact surface between the floor brush housing 101 and the cleaning surface, but also makes the axis of rotation close to the center of the floor brush body 100, thereby improving the problem of the floor brush tilting when dragging back, so that during the cleaning operation, the bottom surface of the floor brush body 100 is always in contact with the surface to be cleaned, thereby improving the cleaning effect. Preferably, the left-right width of the expansion wall 4 is at least 1.5 times smaller than the left-right width of the vertical portion 201.

[0105] In addition, the expansion wall 4 can also adjust the center of gravity of the entire vacuum cleaner when the vacuum cleaner is placed against a wall with the floor brush body 100 as a support base, forming a suitable triangular support placement structure, which is more conducive to the storage of the vacuum cleaner. In addition, preferably, the rear side of the expansion wall 4 is bent upward to form a vertical wall k, which contacts the wall when the vacuum cleaner is placed against the wall, making the vacuum cleaner more stable.

[0106] In this embodiment, the floor brush assembly of the vacuum cleaner is a wet and dry dual-purpose component. The bottom wall of the floor brush housing 101 is provided with a connecting member for connecting with a mop. The connecting member can be any one or more of a felt strip, an adhesive strip, and a magnetic attraction member. In this embodiment, if Figure 4As shown, the bottom wall of the floor brush housing 101 is provided with a felt strip 102, which can be connected to a matching mop, and can also be used as a hair-binding component in daily dry use. In addition, an appropriate gap can be formed between the bottom wall of the floor brush housing 101 and the surface to be cleaned, thereby preventing the air flow channel from being blocked due to the close contact between the bottom wall of the floor brush housing 101 and the surface to be cleaned.

[0107] like Figure 8-10 As shown, in this embodiment, the floor brush housing 101 includes an upper housing 101a and a lower housing 101b. The upper housing 101a includes a front housing wall 5 and a longitudinal inner surrounding wall 6 on the front side; the longitudinal inner surrounding wall 6 encloses the contour line of the lower housing 101b to form a housing cavity T; a dust suction port C1 is formed between the lower end of the housing front wall 5 and the front edge of the lower housing 101b. An external air inlet C4 leading to the air duct P is provided on the front side of the housing cavity T; the air duct P is located in the housing cavity T, and the air duct P includes a front air duct section P1 and a side air duct section P2 located on one side of the housing cavity T; the front air duct section P1 extends in the left-right direction and is located behind the external air inlet C4; the side air duct section P2 extends in the front-to-back direction and is on the same side as the second side n of the transverse channel S1; the front air duct section P1 and the side air duct section P2 are connected by an arc air duct section P3.

[0108] like Figure 5 , 8 As shown, the front edge of the lower shell 101b is in an inwardly concave arc shape, and the front side of the longitudinal inner surrounding wall 6 is in an inwardly concave arc shape consistent with the front edge of the lower shell 101b. As a result, the front wall of the shell cavity T is in an inwardly concave arc shape, so as to form a front air duct cavity H between the front side of the shell cavity T and the rear side of the shell front wall 5. From the dust suction port C1 to the external air inlet C4, the airflow is transformed from vertical to horizontal after expansion, filtering out large impurities and avoiding impurities blocking the subsequent air duct P. The setting of the arc air duct section P3 allows the airflow in the air duct P to flow smoothly to the dust suction pipe joint 200, reducing wind resistance and noise.

[0109] like Figure 8-10 As shown, preferably, the upper shell 101a and the lower shell 101b are combined with each other by a snap-fit ​​structure, and the groove wall of the installation groove 1 is also formed by the upper and lower parts of the upper shell 101a and the lower shell 101b being connected, and the rotating hole f is also connected by the corresponding half-hole structure q, thereby improving the rotation connection assembly of the transverse part 202 and the floor brush shell 101. Of course, this preference does not exclude the existence of an integral injection molding structure or more split structures of the floor brush shell 101. Based on the above scheme, the structure and process of the floor brush shell 101 can be changed without departing from the principle.

[0110] Preferably, if Figure 1-3As shown in Figures 5 and 6, the floor brush housing 101 is provided with a transparent visible portion y, which is located above the suction port C1. The user can observe the state of the suction port C1 accessories from top to bottom through the transparent visible portion y, so that the user can easily and intuitively observe whether there are large debris stuck between the suction port C1 and the external air inlet C4, and intervene to clean it at an appropriate time to avoid affecting normal operation, improve the cleaning effect, and protect objects that accidentally enter the place.

[0111] More preferably, if Figure 3 , 5 As shown, a strip notch is provided on the lower side of the front wall 5 of the shell to form an auxiliary air suction port C3 on the front side of the floor brush shell 101. The auxiliary air suction port C3 can absorb dust on the front side and increase the cleaning area. At the same time, it can also prevent the air flow channel from being blocked due to the close contact between the bottom wall of the floor brush shell 101 and the surface to be cleaned.

[0112] like Figure 5 , 8 As shown, the shell front wall 5 includes a convex arc segment located at the front side and curved upward from the front to the back; the rear end of the convex arc segment 51 extends from the rear side of the front edge of the lower shell 101b, and the convex arc segment is a transparent visible portion y, thereby increasing the visible area and the viewing angle.

[0113] Further preferably, Fig.11 As shown, the upper shell 101a includes a front shell cover a1 having a shell front wall 5 and a rear body a2, the longitudinal inner wall 6 is located on the front side of the rear body a2, and a recessed portion j is provided on the front side of the rear body a2, the recessed portion j extends from the two sides to the top of the rear body a2, the front shell cover a1 is provided on the front side of the rear body a2, the rear section of the front shell cover a1 is placed on the recessed portion j, and the surfaces of the rear body a2 and the front shell cover a1 have a smooth transition.

[0114] The above is an introduction to the vacuum cleaner floor brush assembly provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A floor brush assembly for a vacuum cleaner, characterized in that: It includes a floor brush body and a dust suction pipe joint; The dust suction pipe joint includes a vertical portion extending frontward and rearward and a horizontal portion extending leftward and rightward; The transverse portion is provided with a transverse channel with a smooth hole wall, and the vertical portion is provided with a vertical channel that penetrates the transverse channel; the first side of the transverse channel is closed and the second side extends to the end of the transverse portion to form an inner air inlet; The floor brush body comprises a floor brush housing, and a dust suction port is provided at the bottom of the floor brush housing; A mounting groove with an upper opening is provided in the center of the rear side of the floor brush housing in the left-right direction; The transverse part is rotatably connected in the mounting groove; the rotation axis of the transverse part is consistent with the central axis of the transverse part; the inner air inlet of the transverse part extends into a side wall of the mounting groove; An air duct is provided in the floor brush housing, a first end of the air duct is connected to the dust suction port, a second end of the air duct extends to one side of the mounting groove, and an inner air inlet of the transverse portion is connected to the air duct.

2. The floor brush assembly of a vacuum cleaner according to claim 1, characterized in that: The mounting groove comprises a first supporting wall and a second supporting wall on both sides; The first supporting wall and the second supporting wall are both provided with circular rotating holes; Both ends of the transverse portion are provided with annular connecting portions matching the rotating hole; The connecting portion is placed in the circular rotating hole, and the first arc surface of the connecting portion cooperates with the first arc surface of the rotating hole, so that the transverse portion is rotatably connected to the mounting groove.

3. The floor brush assembly of a vacuum cleaner according to claim 2, characterized in that: The transverse portion includes a central cylindrical main body portion; The connecting portion is an annular protrusion whose outer diameter is smaller than the outer diameter of the main body; An annular step structure is formed between the connecting portion and the main body portion, and the end surface of the main body portion forms an annular limiting surface surrounding the connecting portion; the annular limiting surface is limited on the inner wall of the mounting groove.

4. The floor brush assembly of a vacuum cleaner according to claim 3, characterized in that: A rear guide limiting surface in the form of an arc is provided on the rear side of the installation groove, and the arc extends from the bottom to both sides; The rear guide limit surface cooperates with the vertical portion to guide the side surface of the vertical portion during the rotation of the lateral portion, and limits the lower limit of the rotation of the lateral portion by contacting the lower surface of the vertical portion.

5. The floor brush assembly of a vacuum cleaner according to claim 1, characterized in that: The bottom wall of the floor brush housing is provided with an expansion wall extending backwards; The expansion wall is located in the center of the floor brush housing in the left-right direction; The left-right width of the expansion wall is at least 1.5 times smaller than the left-right width of the vertical portion.

6. The floor brush assembly of a vacuum cleaner according to claim 1, characterized in that: The floor brush housing comprises an upper housing and a lower housing which are buckled with each other; The upper shell comprises a shell front wall on the front side and a longitudinal inner surrounding wall; A dust suction port is formed between the front end of the lower shell and the front end of the upper shell; The lower end of the front wall of the shell is located in front of the suction port; The longitudinal inner surrounding wall surrounds the contour line of the lower shell to form a shell cavity; An external air inlet leading to the air duct is arranged on the front side of the shell cavity.

7. The floor brush assembly of a vacuum cleaner according to claim 6, characterized in that: The air duct is located in the shell cavity, and the air duct includes a front air duct section and a side air duct section located on one side of the shell cavity; The front air duct section extends in the left-right direction and is located behind the outer air inlet; The side air duct section extends in the front-to-back direction and is on the same side as the second side of the transverse channel; The front air duct section and the side air duct section are connected via an arc air duct section.

8. The floor brush assembly of a vacuum cleaner according to claim 6, characterized in that: The floor brush housing is provided with a transparent visible portion, and the transparent visible portion is located above the dust suction port.

9. The floor brush assembly of a vacuum cleaner according to claim 8, characterized in that: The shell front wall includes an outwardly convex arc segment located at the front side and curved upward from front to rear; The rear end of the outwardly convex arc segment extends from the rear side of the front edge of the lower shell body, and the outwardly convex arc segment is a transparent visible portion.

10. The floor brush assembly of a vacuum cleaner according to claim 9, characterized in that: The front edge of the lower shell is in a concave arc shape, and the front side of the longitudinal inner surrounding wall is in a concave arc shape consistent with the front edge of the lower shell.

11. A floor brush assembly for a vacuum cleaner, characterized in that: It includes a floor brush body and a dust suction pipe joint; The dust suction pipe joint includes a vertical portion extending frontward and rearward and a horizontal portion extending leftward and rightward; The horizontal portion is provided with a horizontal hole, the vertical portion is provided with a vertical hole, and the horizontal hole is connected with the vertical hole; The first side of the transverse channel is closed and the second side extends to the end of the transverse portion to form an inner air inlet; The floor brush body comprises a floor brush housing, and a dust suction port is provided at the bottom of the floor brush housing; A mounting groove with an upper opening is provided in the center of the rear side of the floor brush housing in the left-right direction; The transverse part is rotatably connected in the mounting groove; the rotation axis of the transverse part is consistent with the central axis of the transverse part; the inner air inlet of the transverse part extends into a side wall of the mounting groove; An air duct is provided in the floor brush housing, a first end of the air duct is connected to the dust suction port, a second end of the air duct extends to one side of the mounting groove, and an inner air inlet of the transverse portion is connected to the air duct; The bottom wall of the floor brush housing is provided with an expansion wall extending backwards; the expansion wall is located in the center of the floor brush housing in the left-right direction; the expansion wall is used to prevent the front of the floor brush body from tilting upwards when the floor brush body is dragged back.

12. The floor brush assembly of a vacuum cleaner according to claim 11, characterized in that: The mounting groove comprises a first supporting wall and a second supporting wall on both sides; The first supporting wall and the second supporting wall are both provided with circular rotating holes; The transverse portion includes a cylindrical main body portion in the middle and connecting portions at both ends; The connecting portion is an annular protrusion whose outer diameter is smaller than the outer diameter of the main body; The connecting portion is placed in the circular rotating hole, and the first arc surface of the connecting portion cooperates with the first arc surface of the rotating hole, so that the transverse portion is rotatably connected to the mounting groove; An annular step structure is formed between the connecting portion and the main body portion, and the end surface of the main body portion forms an annular limiting surface surrounding the connecting portion; the annular limiting surface is limited on the inner wall of the mounting groove.

13. The floor brush assembly of a vacuum cleaner according to claim 11, characterized in that: The floor brush housing comprises an upper housing and a lower housing; The upper shell comprises a shell front wall on the front side and a longitudinal inner surrounding wall; The longitudinal inner surrounding wall surrounds the contour line of the lower shell to form a shell cavity; The dust suction port is formed between the lower end of the shell front wall and the front edge of the lower shell; The front side of the shell cavity is provided with an external air inlet leading to the air duct; The air duct is located in the shell cavity, and the air duct includes a front air duct section and a side air duct section located on one side of the shell cavity; The front air duct section extends in the left-right direction and is located behind the outer air inlet; The side air duct section extends in the front-to-back direction and is on the same side as the second side of the transverse channel; The front air duct section and the side air duct section are connected via an arc air duct section.

14. The floor brush assembly of a vacuum cleaner according to claim 11, characterized in that: The shell front wall includes an outwardly convex arc segment located at the front side and curved upward from front to rear; The outwardly convex arc section is provided with a transparent visible portion; the transparent visible portion is located above the dust suction port.

15. The floor brush assembly of a vacuum cleaner according to claim 14, characterized in that: A strip-shaped notch is provided on the lower side of the front wall of the shell to form an auxiliary air suction port on the front side of the floor brush shell; The bottom wall of the floor brush housing is provided with a connecting member for connecting with a mop.

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