Floor brush assembly with lifting function

Abstract

The floor brush assembly with the lifting function comprises a floor brush body, a connecting rod, a button, a support and an auxiliary frame, and the connecting rod is rotatably arranged on the floor brush body; the button can be switched between a first position and a second position and is used for driving the connecting rod to rotate; one end of the support is rotatably connected to the floor brush body, a small roller is arranged at the other end of the support, a floor brush base is arranged at the bottom of the floor brush body, an extending opening is formed in the position, corresponding to the small roller, of the floor brush base, and the small roller extends out of the extending opening and makes contact with the ground. A brush and / or a leather strip are / is arranged at the bottom of the auxiliary frame; the connecting rod can apply downward pressing force to the support and the auxiliary frame. The distance between the bottom surface of the floor brush and the cleaning surface can be adjusted so as to meet the cleaning requirements of the cleaning surfaces made of different materials.

Description

TECHNICAL FIELD

[0001] The utility model relates to cleaning equipment technical field, especially a ground brush subassembly with lifting function. BACKGROUND

[0002] The dust catcher industry requires higher and higher dust removal capacity of the machine, and the higher the dust removal capacity is, the greater the moving resistance of the ground brush is, which leads to the reduction of the applicability of the ground brush with high dust removal capacity, and the ground brush is inconvenient to use on different material floors, especially on long-pile carpets, and the user experience is more inconvenient. The specific reasons are as follows:

[0003] The factors affecting the moving resistance size during the ground brush moving resistance test mainly include the following aspects: the whole machine air volume, the air tightness of the ground brush base, and the test angle of the ground brush moving resistance.

[0004] When other conditions are consistent, the air tightness of the ground brush base becomes the decisive factor of the moving resistance of the ground brush. The air tightness of the ground brush base is usually determined by the ground clearance of the ground brush base. At present, the air tightness of the ground brush base is largely determined by the ground clearance of the ground brush base. Under normal circumstances, the smaller the ground clearance of the ground brush base is, the better the air tightness is, and the greater the moving resistance of the ground brush is, especially for carpet cleaning. At present, when solving the moving resistance of the ground brush with high dust removal capacity, firstly, fixed small wheels are added to the ground brush to raise the height of the ground brush base, or slots are opened around the front and rear of the ground brush base to reduce the air tightness of the ground brush and achieve the purpose of reducing the moving resistance.

[0005] However, due to the fixed ground clearance of the ground brush, the air tightness is different on different material cleaning surfaces, for example, the air tightness is relatively high on long-pile carpets, which causes the moving resistance to be too large and affects the user's comfort. Therefore, the fixed ground clearance of the ground brush cannot meet the requirements of dust removal capacity and moving resistance of the ground brush on different cleaning surfaces.

[0006] In view of the above problems, it is necessary to provide a ground brush assembly with lifting function to meet the purpose of adjusting the ground clearance of the ground brush base when cleaning different material floors, reduce the moving resistance under the premise of ensuring a certain dust removal capacity, and be suitable for cleaning requirements in different environments. INVENTION CONTENTS

[0007] In view of the deficiencies of the prior art, the utility model provides a ground brush assembly with lifting function, which can adjust the distance between the ground brush bottom surface and the cleaning surface to meet the cleaning requirements of different material cleaning surfaces.

[0008] The utility model realizes the following technical schemes:

[0009] A ground brush assembly with lifting function comprises:

[0010] a brush body;

[0011] a connecting rod rotatably arranged on the brush body;

[0012] a button switchable between a first position and a second position for driving the connecting rod to rotate;

[0013] a support rotatably connected to one end of the brush body and provided with a small roller at the other end, and a brush base provided at the bottom of the brush body and having an extension opening corresponding to the position of the small roller;

[0014] an auxiliary support provided with a brush and / or a leather strip at the bottom thereof;

[0015] wherein the connecting rod is capable of exerting a downward pressing force on the support and the auxiliary support;

[0016] when the button is switched from the first position to the second position, the brush and / or the leather strip move downward to adhere to the ground;

[0017] when the button is switched from the second position to the first position, the small roller moves downward to contact the ground.

[0018] further, when the user presses the button to the first position, the button drives the connecting rod to rotate, at this time, the connecting rod exerts a downward pressing force on the support, so that the small roller extends from the extension opening and contacts the ground;

[0019] when the user presses the button to the second position, the button drives the connecting rod to rotate, at this time, the connecting rod exerts a downward pressing force on the auxiliary support, so that the brush and / or the leather strip move downward to adhere to the ground.

[0020] further, when the user presses the button to the first position, the connecting rod in the rotating state releases the downward pressing force on the auxiliary support, and an elastic member exerts an upward force on the auxiliary support so that the brush and / or the leather strip move upward with the auxiliary support to move away from the ground;

[0021] when the user presses the button to the second position, the connecting rod in the rotating state releases the downward pressing force on the support, and the ground exerts an upward pushing force on the small roller to make the small roller retract relative to the brush body.

[0022] further, the connecting rod is provided with a first protrusion and a second protrusion;

[0023] when the user presses the button to the first position, the first protrusion abuts against the support and exerts a downward pressing force on the support;

[0024] When the user presses the button to the second position, the second protrusion exerts a downward pressure on the auxiliary frame.

[0025] Further, the connecting rod comprises coaxially arranged first and second rod portions and a connecting rod portion connected between the first and second rod portions, the connecting rod portion being arranged offset from the axes of the first and second rod portions, and the first and second rod portions each being provided with the first and second protrusions.

[0026] Further, a resilient member is arranged between the brush base and the auxiliary frame, one end of the resilient member being in abutment with the brush base and the other end being in abutment with the auxiliary frame.

[0027] Further, a slope is formed on the auxiliary frame, and when the user presses the button to the first position, the auxiliary frame, under the action of the resilient member, causes the slope of the auxiliary frame to be in abutment with the second protrusion.

[0028] Further, a step surface is further formed on the auxiliary frame, and when the user presses the button to the second position, the auxiliary frame, under the action of the resilient member, causes the step surface of the auxiliary frame to be in abutment with the second protrusion.

[0029] Further, the button is integrally formed with the connecting rod.

[0030] Further, the brush body further comprises a brush upper cover, the connecting rod is rotatably arranged on the brush upper cover, and one end of the support is rotatably connected to the brush upper cover.

[0031] Further, a limiting block is formed on the brush upper cover, and when the user presses the button to the first position, the button 3 is in abutment with the limiting block.

[0032] Further, a stop plate is further formed on the brush upper cover, and when the user presses the button to the second position, the first stop plate is in abutment with the stop plate.

[0033] Further, an opening is formed on the brush upper cover for the button to extend out, and first and second stop plates are respectively arranged on the two sides of the button.

[0034] When the user presses the button to the first position, the button and the second stop plate jointly cover the opening.

[0035] When the user presses the button to the second position, the button and the first stop plate jointly cover the opening.

[0036] Compared with the prior art, the utility model has the advantages that:

[0037] The utility model discloses when cleaning carpet type article, and small roller stretches out the ground brush base outside to support the bottom surface of ground brush base higher than the cleaning surface, reduce the resistance when ground brush body moves, simultaneously, the link release to the downward pressure of auxiliary frame, and the brush and / or leather strip move upward with auxiliary frame to be far from the ground, and the user can realize conveniently on the carpet and guarantee the cleaning effect of cleaner ground brush. When cleaning the floor, the upward contraction of small roller makes the whole ground brush body close to the ground, and simultaneously, the link exerts the downward pressure to auxiliary frame, and the brush and / or leather strip move downward with auxiliary frame to adhere to the ground to facilitate cleaning the floor. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is structural schematic diagram of ground brush assembly;

[0039] Figure 2 It is partial structural schematic diagram of ground brush assembly;

[0040] Figure 3 It is structural schematic diagram of ground brush upper cover;

[0041] Figure 4 It is partial structural schematic diagram of ground brush assembly;

[0042] Figure 5 It is partial structural explosion drawing of ground brush assembly;

[0043] Figure 6 It is carpet mode ground brush assembly section view;

[0044] Figure 7 It is floor mode ground brush assembly section view;

[0045] Figure 8 It is ground brush assembly section view.

[0046] 1, ground brush body;10, ground brush base;100, outlet;11, pipe;12, ground brush upper cover;120, opening;121, second recess;122, limit block;123, stop plate;2, link;20, first protruding block;21, second protruding block;210, first plane;211, second plane;22, first rod part;23, second rod part;24, connecting rod part;25, first pivot;3, button;30, first stop plate;31, second stop plate;4, support;40, small roller;41, second pivot;5, auxiliary frame;50, inclined surface;51, step surface;6, brush;7, leather strip;8, elastic member. DETAILED DESCRIPTION

[0047] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0048] like Figures 1-8 As shown, an embodiment of the present invention provides a floor brush assembly with lifting function, including a floor brush body 1, a connecting rod 2, a button 3, a bracket 4, and an auxiliary frame 5. The connecting rod 2 is rotatably mounted on the floor brush body 1. The button 3 can be switched between a first position and a second position to drive the connecting rod 2 to rotate. One end of the bracket 4 is rotatably connected to the floor brush body 1, and the other end is provided with a small roller 40. A floor brush base 10 is provided at the bottom of the floor brush body 1. The floor brush base 10 has an extension opening 100 corresponding to the position of the small roller 40. The small roller 40 extends out from the extension opening 100 and contacts the ground. A brush 6 and / or a leather strip 7 are provided at the bottom of the auxiliary frame 5. The connecting rod 2 can apply a downward pressure force to the bracket 4 and the auxiliary frame 5.

[0049] refer to Figure 6 When the user presses button 3 to the first position, button 3 drives the connecting rod 2 to rotate counterclockwise. The connecting rod 2 in the counterclockwise rotation state applies downward pressure to the bracket 4, causing the bracket 4 to rotate relative to the floor brush body 1. The bracket 4 in the rotating state drives the small roller 40 to descend. At this time, the floor brush base 10 is relatively far away from the ground, which is the carpet mode. At the same time, the connecting rod 2 in the rotating state releases the downward pressure on the auxiliary frame 5. The auxiliary frame 5 moves upward away from the ground under the action of the reset elastic element. The brush 6 and / or the leather strip 7 retract into the floor brush base 10 along with the auxiliary frame 5. In this mode, the gap between the bottom surface of the floor brush base 10 and the cleaning surface is larger, which reduces the vacuum degree during vacuuming and the resistance of the whole machine during operation is smaller, making it suitable for cleaning carpets.

[0050] refer to Figure 7When the user presses button 3 to the second position, button 3 drives the connecting rod 2 to rotate clockwise. The clockwise rotating connecting rod 2 releases the downward pressure on the bracket 4. The ground applies an upward pushing force to the small roller 40, causing the bracket 4 to rotate relative to the floor brush body 1. At this time, the floor brush base 10 is relatively close to the ground, which is the floor mode. At the same time, the rotating connecting rod 2 applies a downward pressure on the auxiliary frame 5. The brush 6 and / or the leather strip 7 move downward with the auxiliary frame 5 to fit the ground. In this mode, the floor brush base 10 is close to the ground, which increases the vacuum degree during vacuuming and increases the resistance during operation, making it suitable for cleaning floors.

[0051] When cleaning carpets, the small rollers 40 extend beyond the outer side of the brush base 10 to support the bottom surface of the brush base 10 above the cleaning surface, reducing resistance when the brush body 1 moves. Simultaneously, the connecting rod 2 releases the downward pressure on the auxiliary frame 5, allowing the brush 6 and / or the leather strap 7 to move upwards with the auxiliary frame 5 away from the ground. This allows for convenient movement on carpets while ensuring effective cleaning of the vacuum cleaner's brush. When cleaning floors, the upward retraction of the small rollers 40 brings the entire brush body 1 closer to the ground. At the same time, the connecting rod 2 applies downward pressure to the auxiliary frame 5, causing the brush 6 and / or the leather strap 7 to move downwards with the auxiliary frame 5 to conform to the floor, facilitating floor cleaning.

[0052] Furthermore, such as Figure 5 As shown, the connecting rod 2 is provided with a first protrusion 20 and a second protrusion 21. When the user presses the button 3 to the first position, the first protrusion 20 abuts against the bracket 4 and applies a downward pressure to the bracket 4. At this time, the second protrusion 21 has released the pressure on the auxiliary frame 5, and the auxiliary frame 5 moves upward and retracts the floor brush base 10 under the action of the reset force. When the user presses the button 3 to the second position, the second protrusion 21 applies a downward pressure to the auxiliary frame 5. Similarly, at this time, the first protrusion 20 has released the pressure on the bracket 4, and the small roller 40 moves upward and retracts the floor brush base 10 under the reaction force of the ground.

[0053] like Figure 5 As shown, the connecting rod 2 includes a first rod portion 22 and a second rod portion 23 coaxially arranged, and a connecting rod portion 24 connecting the first rod portion 22 and the second rod portion 23. The connecting rod portion 24 is offset from the axis of the first rod portion 22 and the second rod portion 23. A first protrusion 20 and a second protrusion 21 are provided on both the first rod portion 22 and the second rod portion 23.

[0054] like Figure 2 As shown, the brush body 1 also includes a pipe 11, and the connecting rod 2 is located between the brush base 10 and the pipe 11.

[0055] like Figure 8As shown, the reset elastic member can be the elastic member 8, that is, the elastic member 8 is arranged between the brush base 10 and the auxiliary frame 5, one end of the elastic member 8 abuts against the brush base 10, and the other end abuts against the auxiliary frame 5. The elastic member 8 always provides an upward elastic force to the auxiliary frame 5.

[0056] The auxiliary frame 5 is formed with an inclined surface 50. When the user presses the button 3 to the first position, the auxiliary frame 5 abuts against the second protrusion 21 through the elastic member 8, so as to avoid the rotation of the button 3 to the second position. In order to further improve the stability of the abutment between the inclined surface 50 and the second protrusion 21, the second protrusion 21 is formed with a first plane 210 matched with the inclined surface 50.

[0057] The auxiliary frame 5 is further formed with a stepped surface 51. When the user presses the button 3 to the second position, the auxiliary frame 5 abuts against the second protrusion 21 through the elastic member 8, so as to avoid the rotation of the button 3 to the first position. In order to further improve the stability of the abutment between the stepped surface 51 and the second protrusion 21, the second protrusion 21 is formed with a second plane 211 matched with the stepped surface 51.

[0058] In the embodiment, the button 3 is integrally formed with the connecting rod 2.

[0059] The brush body 1 further comprises a brush upper cover 12, and the connecting rod 2 is rotatably arranged on the brush upper cover 12. Specifically, referring to Figure 5 , both ends of the connecting rod 2 are formed with first rotating shafts 25, and the brush upper cover 12 is formed with first recesses (not shown in the figure) matched with the first rotating shafts 25, and the first rotating shafts 25 are rotatably accommodated in the first recesses. Specifically, the first rotating shafts 25 are formed at the ends of the first rods 22.

[0060] One end of the support 4 is rotatably connected to the brush upper cover 12. Specifically, referring to Figure 5 and Figure 6 , one end of the support 4 is formed with a second rotating shaft 41, and the brush upper cover 12 is formed with a second recess 121 matched with the second rotating shaft 41, and the second rotating shaft 41 is rotatably accommodated in the second recess 121.

[0061] The brush upper cover 12 is formed with an opening 120 for the button 3 to extend out, and the button 3 is respectively provided with a first baffle 30 and a second baffle 31 on both sides. When the user presses the button 3 to the first position, the button 3 and the second baffle 31 jointly cover the opening 120; when the user presses the button 3 to the second position, the button 3 and the first baffle 30 jointly cover the opening 120.

[0062] Referring to Figure 6A limiting block 122 is formed on the upper cover 12 of the floor brush, and the button 3 abuts against the limiting block 122 when the user presses the button 3 to the first position. Specifically, when the user presses the button 3 from the second position to the first position, the button 3 is counterclockwise rotated, and when the button 3 is rotated to the first position, the button 3 abuts against the limiting block 122, and the limiting block 122 limits the button 3 to avoid the button 3 from being continuously counterclockwise rotated. Specifically, the limiting block 122 is arranged on the side wall of the opening 120 of the upper cover 12, and when the button 3 is counterclockwise rotated, one end of the button 3 is in contact with the limiting block 122 and is limited. Preferably, the limiting block 122 can be formed on the opening 120 in the form of a rib.

[0063] Reference Figure 7 A blocking plate 123 is further formed on the upper cover 12 of the floor brush, and the first blocking plate 30 abuts against the blocking plate 123 when the user presses the button 3 to the second position. Specifically, when the user presses the button 3 from the first position to the second position, the button 3 is clockwise rotated, and when the button 3 is rotated to the second position, the first blocking plate 30 abuts against the blocking plate 123, and the blocking plate 123 limits the first blocking plate 30 to avoid the button 3 from being continuously clockwise rotated. Specifically, one edge of the opening 120 extends towards the inside to form the blocking plate 12 to limit one end of the button 3 moving to the second position.

[0064] The brush 6 and the leather strip 7 are respectively arranged on the front side and the rear side of the bottom of the floor brush base 10 to realize the front sweeping and the rear scraping of the floor brush. Meanwhile, the small roller 40 is arranged at the middle position of the bottom of the floor brush base 10 to realize better support of the floor brush in the carpet mode. In this way, the brush 6 and the leather strip 7 are respectively arranged at the front and rear ends of the bottom of the auxiliary frame 5, the small roller 40 is arranged between the brush 6 and the leather strip 7, and the auxiliary frame 5 is provided with an opening at the middle position for the small roller 40 to pass through.

[0065] Preferably, the supports 4, the first protrusion 20 and the second protrusion 21 are arranged in pairs and symmetrically on the two sides of the floor brush body 1, so that the pressing force is more stable.

[0066] The working principle of the utility model is as follows:

[0067] As Figure 6As shown, the initial state of the floor brush assembly is the carpet mode, at this time, the button 3 is located in the first position, the first protrusion 20 on the connecting rod 2 abuts against the support 4 and exerts a downward pressure on the support 4, so that the small roller 40 extends from the extension opening 100 and contacts the ground, at this time, the floor brush base 10 is relatively far away from the ground, at the same time, the auxiliary frame 5 makes the inclined surface 50 of the auxiliary frame 5 abut against the first plane 210 of the second protrusion 21 under the action of the elastic member 8, so as to avoid the rotation of the button 3 to the second position; at the same time, the button 3 abuts against the limiting block 122, and the limiting block 122 limits the button 3 at this time, so as to avoid the continuous counterclockwise rotation of the button 3.

[0068] When the floor brush assembly is switched from the carpet mode to the floor mode, the position of the button 3 needs to be rotated clockwise to the second position as shown, in the process of the clockwise rotation of the button 3, the second protrusion 21 slides relative to the first plane 210, until the second plane 211 of the second protrusion 21 abuts against the stepped surface 51 of the auxiliary frame 5, at this time, the second protrusion 21 exerts a downward pressure on the auxiliary frame 5, and the brush 6 and / or the leather strip 7 move downward with the auxiliary frame 5 to adhere to the ground, and at the same time, the second plane 211 of the second protrusion 21 and the stepped surface 51 of the auxiliary frame 5 are always guaranteed to adhere to each other under the elastic force of the elastic member 8, so as to avoid the rotation of the button 3 to the first position; at the same time, the blocking plate 123 limits the first blocking plate 30 at this time, so as to avoid the continuous clockwise rotation of the button 3. Figure 6 Figure 7 When the button 3 is rotated clockwise, the connecting rod 2 is simultaneously rotated, when the button 3 is rotated clockwise to the second position, the first protrusion 20 on the connecting rod 2 releases the downward pressure on the support 4, and the ground exerts an upward pushing force on the small roller 40 to make the support 4 rotate relative to the floor brush body 1, at this time, the floor brush base 10 is relatively close to the ground, at the same time, the connecting rod 2 in the rotating state exerts a downward pressure on the auxiliary frame 5, and the brush 6 and / or the leather strip 7 move downward with the auxiliary frame 5 to adhere to the ground, in this mode, the resistance is large, and it is suitable for cleaning the floor.

[0069] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.​

Claims

1. A floor brush assembly with a lifting function, characterized in that, The utility model relates to a floor brush assembly with lifting function, comprising: a floor brush body (1); a connecting rod (2) rotatably arranged on the floor brush body (1); a button (3) switchable between a first position and a second position for driving the connecting rod (2) to rotate; a support (4) having one end rotatably connected to the floor brush body (1) and the other end provided with a small roller (40), the floor brush body (1) being provided at the bottom with a floor brush base (10) having an extension opening (100) corresponding to the position of the small roller (40); an auxiliary frame (5) provided at the bottom with a brush (6) and / or a leather strip (7); wherein the connecting rod (2) can exert a downward pressing force on the support (4) and the auxiliary frame (5); when the button (3) is switched from the first position to the second position, the brush (6) and / or the leather strip (7) move downward to adhere to the ground; when the button (3) is switched from the second position to the first position, the small roller (40) moves downward to contact the ground.

2. The floor brush assembly with lifting function according to claim 1, wherein: when the user presses the button (3) to the first position, the button (3) drives the connecting rod (2) to rotate, at this time, the connecting rod (2) exerts a downward pressing force on the support (4), so that the small roller (40) extends from the extension opening (100) and contacts the ground; when the user presses the button (3) to the second position, the button (3) drives the connecting rod (2) to rotate, at this time, the connecting rod (2) exerts a downward pressing force on the auxiliary frame (5), so that the brush (6) and / or the leather strip (7) move downward to adhere to the ground.

3. The floor brush assembly with lifting function according to claim 2, wherein: when the user presses the button (3) to the first position, the rotating connecting rod (2) releases the downward pressing force on the auxiliary frame (5), and an elastic member (8) exerts an upward force on the auxiliary frame (5) so that the brush (6) and / or the leather strip (7) move upward with the auxiliary frame (5) to move away from the ground; when the user presses the button (3) to the second position, the rotating connecting rod (2) releases the downward pressing force on the support (4), and the ground exerts an upward pushing force on the small roller (40) so that the small roller (40) is retracted relative to the floor brush body (1).

4. The floor brush assembly with a lifting function according to claim 1, wherein, the connecting rod (2) is provided with a first protrusion (20) and a second protrusion (21); when the user presses the button (3) to the first position, the first protrusion (20) abuts against the support (4) and exerts a downward pressing force on the support (4); when the user presses the button (3) to the second position, the second protrusion (21) exerts a downward pressing force on the auxiliary frame (5).

5. The floor brush assembly with a lifting function according to claim 4, wherein, The connecting rod (2) comprises coaxially arranged first and second rod portions (22, 23) and a connecting rod portion (24) connected between the first and second rod portions (22, 23), the connecting rod portion (24) is arranged offset from the axes of the first and second rod portions (22, 23), and the first and second rod portions (22, 23) are each provided with the first and second protrusions (20, 21).

6. The floor brush assembly with a lifting function according to claim 5, wherein, An elastic member (8) is arranged between the brush base (10) and the auxiliary frame (5), one end of the elastic member (8) abuts against the brush base (10), and the other end abuts against the auxiliary frame (5).

7. The floor brush assembly with a lifting function according to claim 6, wherein, The auxiliary frame (5) is provided with a slope (50), when the user presses the button (3) to the first position, the slope (50) of the auxiliary frame (5) abuts against the second protrusion (21) under the action of the elastic member (8).

8. The floor brush assembly with a lifting function according to claim 6, wherein, The auxiliary frame (5) is further provided with a stepped surface (51), when the user presses the button (3) to the second position, the stepped surface (51) of the auxiliary frame (5) abuts against the second protrusion (21) under the action of the elastic member (8).

9. The floor brush assembly with a lifting function according to claim 1, wherein, The button (3) is integrally formed with the connecting rod (2).

10. The floor brush assembly with a lifting function according to claim 1, wherein, The brush body (1) further comprises a brush upper cover (12), the connecting rod (2) is rotatably arranged on the brush upper cover (12), and one end of the support (4) is rotatably connected to the brush upper cover (12).

11. The floor brush assembly with a lifting function according to claim 10, wherein, The brush upper cover (12) is provided with a limiting block (122), when the user presses the button (3) to the first position, the button (3) abuts against the limiting block (122).

12. The floor brush assembly with a lifting function according to claim 10, wherein, The brush upper cover (12) is provided with an opening (120) for the button (3) to extend out, and the button (3) is provided with first and second baffles (30, 31) on both sides thereof; When the user presses the button (3) to the first position, the button (3) and the second baffle (31) jointly cover the opening (120); When the user presses the button (3) to the second position, the button (3) and the first baffle (30) jointly cover the opening (120).

13. The floor brush assembly with a lifting function according to claim 12, wherein, The brush upper cover (12) is further provided with a position blocking plate (123), when the user presses the button (3) to the second position, the first baffle (30) abuts against the position blocking plate (123).

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