Dust collector with hair cutting mechanism

Abstract

The utility model relates to the technical field of dust collectors, and discloses a dust collector with a hair cutting mechanism, which comprises a floor brush main body, a rolling brush assembly capable of rolling in the circumferential direction is arranged on the floor brush main body, an installation cavity for detachably installing the rolling brush assembly is arranged on the floor brush main body, and a side opening is arranged at the side end of the installation cavity. The rolling brush assembly is installed in or pulled out of the installation cavity from the side opening in the axial direction of the rolling brush assembly, a hair cutting mechanism used for cutting off hair wound on the rolling brush assembly is arranged on the floor brush body, and the hair cutting mechanism comprises a telescopic cutting knife protruding out of the inner cavity wall of the installation cavity and an elastic piece. According to the dust collector with the hair cutting mechanism, hair wound on the rolling brush assembly is cut through the hair cutting mechanism while the rolling brush assembly is detached, hair cleaning is facilitated, and operation is easy; after the rolling brush assembly is installed, the blade retracts inwards, foreign matter such as hair is prevented from being stuck and hung on the telescopic cutting knife in the using process, and it is guaranteed that the hair can be smoothly cut after the rolling brush assembly is detached.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaners, and particularly to a vacuum cleaner with a hair cutting mechanism. Background Art

[0002] Vacuum cleaners are cleaning devices widely used in advanced human life and industrial production, and they have been developed for more than a hundred years since their birth. The working principle of a vacuum cleaner is to drive the blades to rotate at high speed by an electric motor, generate a negative air pressure in a sealed housing, and then suck dust through an external suction pipe. In the current composition structure of a vacuum cleaner, a floor brush is a component for cleaning the ground. When using a vacuum cleaner in a family, especially in a dressing room and a washroom, there are a large number of long hairs. It is a very common problem that the hairs are wound around the roller brush of the floor brush. It is difficult to clean the hairs wound around the roller brush. Therefore, after the user removes the roller brush, auxiliary tools such as scissors and blades are needed to cut the hairs before the hairs can be cleaned from the roller brush. The cleaning is rather troublesome and the user experience is not good. Summary of the Utility Model

[0003] To solve at least one of the above problems, the utility model provides a vacuum cleaner with a hair cutting mechanism, including: a floor brush main body, on which a circumferentially rotatable roller brush assembly is arranged, an installation cavity for detachably installing the roller brush assembly is arranged on the floor brush main body, a side opening is arranged at the side end of the installation cavity, the roller brush assembly is loaded / extracted from the installation cavity along its own axial direction through the side opening, a hair cutting mechanism for cutting the hairs wound on the roller brush assembly is arranged on the floor brush main body, the hair cutting mechanism includes a telescopic cutting knife protruding inward from the inner cavity wall of the installation cavity and an elastic member, the telescopic cutting knife includes a retractable blade, and the elastic member is used to drive the blade to extend outward; for the vacuum cleaner with a hair cutting mechanism of the utility model, when the roller brush assembly is removed, the hairs wound on the roller brush assembly are cut by the hair cutting mechanism, which is convenient for hair cleaning and the operation is simple; after the roller brush assembly is installed, the blade retracts, avoiding the adhesion and blockage of foreign matters such as hairs to the telescopic cutting knife during use, and ensuring that the roller brush assembly can be removed smoothly to cut the hairs.

[0004] Optionally, the blade is slidably arranged on the floor brush main body in the radial direction of the roller brush assembly.

[0005] Optionally, the elastic member is arranged between the floor brush main body and the telescopic cutting knife, the elastic member is a compression spring, one end of the elastic member abuts against the floor brush main body, and the other end of the elastic member abuts against the telescopic cutting knife.

[0006] Optionally, the floor brush body includes a housing and a mounting housing for slidably mounting the retractable cutting knife, and the elastic member abuts between the mounting housing and the retractable cutting knife.

[0007] Optionally, the mounting housing is provided with a receiving cavity for mounting the retractable cutting knife. The inner wall of the receiving cavity is provided with guiding ribs and limiting protrusions. The guiding ribs extend along the sliding direction of the retractable cutting knife. The retractable cutting knife is provided with guiding grooves corresponding to the guiding ribs, and the retractable cutting knife is provided with limiting flanges corresponding to the limiting protrusions; when the elastic member drives the retractable cutting knife to extend outwards, the limiting flanges abut against the limiting protrusions for limiting.

[0008] Optionally, the guiding ribs are provided with first guiding inclined surfaces, the notch of the guiding groove is provided with second guiding inclined surfaces corresponding to the first guiding inclined surfaces, and the limiting protrusions are provided with third guiding inclined surfaces facilitating the introduction of the limiting flanges.

[0009] Optionally, the housing is provided with a mounting groove for mounting the mounting housing, the housing is provided with a buckle, and the mounting housing is provided with a clamping block corresponding to and clamped with the buckle.

[0010] Optionally, the roller brush assembly has a locked position and an unlocked position for rotational switching. When the roller brush assembly is in the locked position, the roller brush assembly is locked with the floor brush body; when the roller brush assembly is in the unlocked position, the roller brush assembly is unlocked and can be laterally withdrawn from the mounting cavity; the roller brush assembly is provided with positioning protrusions, the floor brush body is provided with a locked position groove and an unlocked position groove corresponding to the positioning protrusions, the roller brush assembly is provided with limiting blocks, and the floor brush body is provided with a blocking block corresponding to the limiting blocks. When the roller brush assembly is in the locked position, the limiting blocks limit the blocking block in the axial direction of the roller brush assembly.

[0011] Optionally, the retractable cutting knife further includes a tool holder for mounting the blade. The floor brush body is provided with a limiting sliding groove corresponding to the blade. The blade slides along the limiting sliding groove and simultaneously slides radially along the roller brush assembly. The limiting block is provided with a fourth guiding inclined surface, and the tool holder is provided with a fifth guiding inclined surface corresponding to the fourth guiding inclined surface. When the roller brush assembly rotates from the unlocked position to the locked position, the fourth guiding inclined surface pushes the fifth guiding inclined surface to make the retractable cutting knife slide inwards and contract.

[0012] Optionally, the roller brush assembly includes a roller and a roller brush provided on the roller. The retractable cutting knife is placed at the side end of the roller brush close to the side opening, and a plurality of hair cutting mechanisms are distributed along the circumferential direction of the roller brush assembly.

[0013] Compared with the prior art, for the vacuum cleaner with a hair cutting mechanism of the present utility model, when the roller brush assembly is removed, the hair wound on the roller brush assembly is cut by the hair cutting mechanism, which is convenient for hair cleaning and has simple operation; after the roller brush assembly is installed, the blade retracts, avoiding adhesion and blockage of foreign matters such as hair to the retractable cutting knife during use, ensuring that the hair can be smoothly cut when the roller brush assembly is removed; when the roller brush assembly is removed, the elastically telescopic blade can elastically adjust the length of the blade extending according to the structure of the roller brush assembly, and can also be adaptively adjusted according to the height of the brush filaments on the roller brush assembly, so that the hair can be thoroughly removed regardless of the height of the brush filaments of different roller brushes; a first guiding inclined surface is provided on the guiding rib, a second guiding inclined surface is provided at the notch of the guiding groove, and a third guiding inclined surface is provided on the limiting protrusion, reducing the assembly difficulty; the blade can only slide along the radial direction of the roller brush assembly, avoiding the change of the blade orientation, making the hair cutting stable; the action of pulling out the roller brush assembly can be utilized to cut and sever the hair on the roller brush assembly simultaneously through the retractable cutting knife, making the severed hair easier to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a perspective view of the locked state of the roller brush assembly of the vacuum cleaner with a hair cutting mechanism of the present utility model;

[0015] Figure 2 is Figure 1 an enlarged view of part A in

[0016] Figure 3 is a sectional view of the vacuum cleaner with a hair cutting mechanism of the present utility model Figure 1 ;

[0017] Figure 4 is a sectional view of the vacuum cleaner with a hair cutting mechanism of the present utility model Figure 2 ;

[0018] Figure 5 is Figure 4 an enlarged view of part B in

[0019] Figure 6 is a sectional view of the vacuum cleaner with a hair cutting mechanism of the present utility model Figure 3 ;

[0020] Figure 7 is Figure 6 an enlarged view of part C in

[0021] Figure 8 is a structural schematic diagram of the roller brush assembly part of the vacuum cleaner with a hair cutting mechanism of the present utility model;

[0022] Figure 9 is Figure 8 an enlarged view of part D in

[0023] Figure 10 This is a schematic structural view of the side opening of a vacuum cleaner with a hair-cutting mechanism according to the present utility model;

[0024] Figure 11 is Figure 10 an enlarged view of part E in

[0025] Figure 12 This is a schematic structural view of the telescopic cutting knife part of a vacuum cleaner with a hair-cutting mechanism according to the present utility model;

[0026] Figure 13 This is an exploded view of the hair-cutting mechanism of a vacuum cleaner with a hair-cutting mechanism according to the present utility model;

[0027] Figure 14 This is a schematic structural view of the telescopic cutting knife of a vacuum cleaner with a hair-cutting mechanism according to the present utility model;

[0028] Figure 15 This is a schematic structural view of the limit block of a vacuum cleaner with a hair-cutting mechanism according to the present utility model;

[0029] Figure 16 This is a schematic structural view of the unlocked state of the roller brush assembly of a vacuum cleaner with a hair-cutting mechanism according to the present utility model;

[0030] The corresponding component names for the reference numerals in the figures are: 1 is the floor brush main body, 101 is the installation cavity, 102 is the side opening, 103 is the installation groove, 104 is the buckle, 105 is the locking position groove, 106 is the unlocking position groove, 107 is the stop block, 108 is the limit sliding groove, 2 is the roller brush assembly, 21 is the roller, 22 is the brush bristles, 201 is the positioning protrusion, 202 is the limit block, 2021 is the fourth guide slope, 3 is the hair-cutting mechanism, 4 is the telescopic cutting knife, 41 is the tool rest, 411 is the fifth guide slope, 42 is the blade, 401 is the guide groove, 402 is the limit flange, 403 is the second guide slope, 5 is the elastic member, 6 is the handle, 10 is the housing, 11 is the installation housing, 111 is the accommodation cavity, 112 is the guide rib, 113 is the limit protrusion, 1131 is the third guide slope, 114 is the first guide slope, 115 is the catch. Detailed implementation manners

[0031] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model is provided in conjunction with the accompanying drawings.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship during the normal use of the product.

[0033] The terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0034] Refer to Figures 1 - 16 , an embodiment of the present utility model provides a vacuum cleaner with a hair-cutting mechanism, including: a floor brush main body 1, on which a circumferentially rotatable roller brush assembly 2 is arranged, and the roller brush assembly 2 is driven to rotate by a motor and a transmission belt inside the floor brush main body 1; an installation cavity 101 for detachably installing the roller brush assembly 2 is arranged on the floor brush main body 1. When cleaning the ground, dirt on the ground will be swept into the installation cavity 101 by the roller brush assembly 2 and then sucked into the dust collection cavity, and some hairs and the like will be wound around the roller brush assembly 2; a side opening 102 is arranged at the side end of the installation cavity 101, and the roller brush assembly 2 is loaded / extracted from the installation cavity 101 along its own axial direction through the side opening 102, and the roller brush assembly 2 is convenient to disassemble and assemble; a hair-cutting mechanism 3 for cutting the hairs wound on the roller brush assembly 2 is arranged on the floor brush main body 1. The hair-cutting mechanism 3 includes a telescopic cutting knife 4 protruding inward from the inner cavity wall of the installation cavity 101 and an elastic member 5. The telescopic cutting knife 4 includes a retractable blade 42, and the elastic member 5 is used to drive the blade 42 to extend outward. When the roller brush assembly 2 is removed, the elastically telescopic blade 42 can elastically adjust the length of the blade extending according to the structure of the roller brush assembly 2, and can also adaptively cooperate with the height of the brush filaments on the roller brush assembly 2 for adjustment. The hairs can be thoroughly removed for different heights of the brush filaments of the roller brush; for the vacuum cleaner with a hair-cutting mechanism of the present utility model, when the roller brush assembly is removed, the hairs wound on the roller brush assembly are cut by the hair-cutting mechanism, which is convenient for hair cleaning and has simple operation; after the roller brush assembly is installed, the blade retracts, avoiding the adhesion and blockage of hairs and other foreign matters to the telescopic cutting knife during use, and ensuring that the roller brush assembly can be smoothly removed to cut the hairs.

[0035] Refer to Figure 1 , Figure 5 , Figure 9 , Figure 12 and Figure 13, the blade 42 is slidably arranged on the floor brush main body 1 in the radial direction of the roller brush assembly 2, that is, the direction in which the roller brush assembly 2 is withdrawn is perpendicular to the sliding direction of the blade 42, which is convenient for force application during cutting; the radial direction of the roller brush assembly 2 is the radial direction of the cylindrical roller; the elastic member 5 is placed between the floor brush main body 1 and the telescopic cutting knife 4. The elastic member 5 is a compression spring. One end of the elastic member 5 abuts against the floor brush main body 1, and the other end of the elastic member 5 abuts against the telescopic cutting knife 4. The telescopic cutting knife 4 is flexible in telescoping, simple in structure, and low in production cost; the floor brush main body 1 includes a housing 10 and a mounting housing 11 for slidably mounting the telescopic cutting knife 4. The elastic member 5 abuts between the mounting housing 11 and the telescopic cutting knife 4. The structural design is reasonable. First, the telescopic cutting knife 4 is installed on the mounting housing 11, and then the mounting housing 11 is installed on the housing 10, which reduces the assembly difficulty of the telescopic cutting knife 4.

[0036] Refer to Figure 1 , Figure 5 , Figure 9 and Figure 13 , a receiving cavity 111 for installing the telescopic cutting knife 4 is provided on the mounting housing 11. Guide ribs 112 and limit protrusions 113 are provided on the inner wall of the receiving cavity 111. The guide ribs 112 extend along the sliding direction of the telescopic cutting knife 4. A guide groove 401 corresponding to the guide ribs 112 is provided on the telescopic cutting knife 4, so that the telescopic cutting knife 4 can only slide in the radial direction of the roller brush assembly 2, so that the blade will not change its orientation during sliding, ensuring that the blade always aligns with the direction of the hair on the cutting roller brush assembly 2, and the use is reliable; a limit flange 402 corresponding to the limit protrusion 113 is provided on the telescopic cutting knife 4; when the elastic member 5 drives the telescopic cutting knife 4 to extend outward, the limit flange 402 abuts against the limit protrusion 113 for limiting, preventing the telescopic cutting knife 4 from disengaging from the mounting housing 11; a first guide slope 114 is provided on the guide rib 112, a second guide slope 403 corresponding to the first guide slope 114 is provided at the notch of the guide groove 401, and a third guide slope 1131 for facilitating the introduction of the limit flange 402 is provided on the limit protrusion 113, reducing the assembly difficulty; an installation groove 103 for installing the mounting housing 11 is provided on the housing 10, a buckle 104 is provided on the housing 10, and a block 115 corresponding to the buckle 104 is provided on the mounting housing 11, and the mounting housing 11 and the housing 10 are conveniently assembled.

[0037] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 7, the roller brush assembly 2 has a circumferentially rotatable locking position and unlocking position. When the roller brush assembly 2 is in the locking position, the roller brush assembly 2 is locked with the floor brush body 1. At this time, the roller brush assembly 2 is installed and cannot be withdrawn from the installation cavity 101. When the roller brush assembly 2 is in the unlocking position, the roller brush assembly 2 is unlocked and can be laterally withdrawn from the installation cavity 101. A positioning protrusion 201 is provided on the roller brush assembly 2, and a locking position groove 105 and an unlocking position groove 106 corresponding to the positioning protrusion 201 are provided on the floor brush body 1. A limiting block 202 is provided on the roller brush assembly 2, and a stopper 107 corresponding to the limiting block 202 is provided on the floor brush body 1. When the roller brush assembly 2 is in the locking position, the limiting block 202 limits the stopper 107 in the axial direction of the roller brush assembly 2, so that the roller brush assembly 2 is installed and cannot be withdrawn from the installation cavity 101. When the roller brush assembly 2 is circumferentially rotated to the unlocking position, the limiting block 202 is misaligned with the stopper 107, and the limiting block 202 does not axially limit the stopper 107, that is, the roller brush assembly 2 can be withdrawn from the installation cavity 101. A handle 6 is hinged to the side end of the roller brush assembly 2, and the roller brush assembly 2 is circumferentially rotated and withdrawn through the handle 6, which is convenient to operate.

[0038] See Figure 1 , Figure 7 , Figure 9 , Figure 11 , Figure 12 and Figure 15 , the telescopic cutter 4 further includes a tool holder 41 for fixedly installing the blade 42, so that the blade 42 can only slide along the radial direction of the roller brush assembly 2, avoiding the change of the blade orientation, making the hair cutting stable. A limiting chute 108 corresponding to the blade 42 is provided on the floor brush body 1, and the blade 42 slides along the limiting chute 108 and simultaneously along the radial direction of the roller brush assembly 2. A fourth guide slope 2021 is provided on the limiting block 202, and a fifth guide slope 411 corresponding to the fourth guide slope 2021 is provided on the tool holder 41. When the roller brush assembly 2 rotates from the unlocking position to the locking position, the fifth guide slope 411 is pushed by the fourth guide slope 2021 to make the telescopic cutter 4 slide inwards. After installing the roller brush assembly, the blade retracts, avoiding the adhesion and blockage of hair and other foreign objects to the telescopic cutter during use, and ensuring that the roller brush assembly can be smoothly removed to cut hair. After the blade retracts, hair and other foreign objects are not easily blocked on the end of the roller brush assembly near the side opening 102, avoiding the roller brush assembly from being stuck, difficult to clean and affecting the service life.

[0039] See Figure 1 , Figure 4 , Figure 10 , Figure 11 and Figure 15, the roller brush assembly 2 includes a roller 21 and bristles 22 arranged on the roller 21, and the telescopic cutter 4 is placed at the side end of the bristles 22 close to the side opening 102; the action of pulling out the roller brush assembly 2 can be utilized to simultaneously cut and sever the hair on the roller brush assembly 2 through the telescopic cutter 4, making the severed hair easier to clean; several hair cutting mechanisms 3 are distributed along the circumferential direction of the roller brush assembly 2. In this embodiment, three hair cutting mechanisms 3 are provided, and the hair cutting effect is good.

[0040] For the vacuum cleaner with a hair cutting mechanism of the present invention, while the roller brush assembly is removed, the hair wound around the roller brush assembly is cut through the hair cutting mechanism, which is convenient for cleaning the hair and has simple operation; after the roller brush assembly is installed, the blade retracts to prevent foreign objects such as hair from sticking and blocking the telescopic cutter during use, ensuring that the hair can be smoothly cut when the roller brush assembly is removed; when the roller brush assembly is removed, the elastically telescopic blade can elastically adjust the length of the blade protruding according to the structure of the roller brush assembly, and can also adaptively cooperate with the height of the brush filaments on the roller brush assembly for adjustment. Different heights of the brush filaments on the roller brush can achieve a more thorough effect of removing hair; a first guiding inclined surface is provided on the guiding rib, a second guiding inclined surface is provided at the notch of the guiding groove, and a third guiding inclined surface is provided on the limiting protrusion, reducing the assembly difficulty; the blade can only slide along the radial direction of the roller brush assembly, avoiding the change of the blade orientation and making the hair cutting stable; the action of pulling out the roller brush assembly can be utilized to simultaneously cut and sever the hair on the roller brush assembly through the telescopic cutter, making the severed hair easier to clean.

[0041] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A vacuum cleaner with a hair-cutting mechanism, characterized in that Comprising: A floor brush body (1), on which a rotatable brush assembly (2) is arranged for circumferential rolling. An installation cavity (101) for detachably installing the brush assembly (2) is arranged on the floor brush body (1). A side opening (102) is arranged at the side end of the installation cavity (101). The brush assembly (2) is loaded into / drawn out of the installation cavity (101) from the side opening (102) along its own axial direction. A hair-cutting mechanism (3) for cutting the hair wound on the brush assembly (2) is arranged on the floor brush body (1). The hair-cutting mechanism (3) includes a telescopic cutting knife (4) protruding inward from the inner cavity wall of the installation cavity (101) and an elastic member (5). The telescopic cutting knife (4) includes a retractable blade (42), and the elastic member (5) is used to drive the blade (42) to extend outward.

2. The vacuum cleaner with a hair cutting mechanism according to claim 1, characterized in that, The blade (42) is slidably arranged on the floor brush body (1) along the radial direction of the brush assembly (2).

3. The vacuum cleaner with a hair cutting mechanism according to claim 1, wherein, The elastic member (5) is arranged between the floor brush body (1) and the telescopic cutting knife (4). The elastic member (5) is a compression spring. One end of the elastic member (5) abuts against the floor brush body (1), and the other end of the elastic member (5) abuts against the telescopic cutting knife (4).

4. The vacuum cleaner with a hair cutting mechanism according to claim 1, wherein The floor brush body (1) includes a housing (10) and an installation housing (11) for slidably installing the telescopic cutting knife (4). The elastic member (5) abuts between the installation housing (11) and the telescopic cutting knife (4).

5. The vacuum cleaner with a hair-cutting mechanism according to claim 4, characterized in that, An accommodation cavity (111) for installing the telescopic cutting knife (4) is arranged on the installation housing (11). Guide ribs (112) and limit protrusions (113) are arranged on the inner wall of the accommodation cavity (111). The guide ribs (112) extend along the sliding direction of the telescopic cutting knife (4). A guide groove (401) corresponding to the guide ribs (112) is arranged on the telescopic cutting knife (4). A limit flange (402) corresponding to the limit protrusions (113) is arranged on the telescopic cutting knife (4). When the elastic member (5) drives the telescopic cutting knife (4) to extend outward, the limit flange (402) abuts against the limit protrusions (113) for limiting.

6. The vacuum cleaner with a hair cutting mechanism as claimed in claim 5, wherein A first guiding inclined surface (114) is arranged on the guide ribs (112). A second guiding inclined surface (403) corresponding to the first guiding inclined surface (114) is arranged at the notch of the guide groove (401). A third guiding inclined surface (1131) facilitating the introduction of the limit flange (402) is arranged on the limit protrusions (113).

7. The vacuum cleaner with a hair-cutting mechanism according to claim 4, wherein, An installation groove (103) for installing the installation housing (11) is arranged on the housing (10). A buckle (104) is arranged on the housing (10). A clamping block (115) corresponding to the buckle (104) for clamping is arranged on the installation housing (11).

8. The vacuum cleaner with a hair cutting mechanism as claimed in claim 1, wherein, The roller brush assembly (2) has a rotationally switchable locked position and an unlocked position. When the roller brush assembly (2) is in the locked position, the roller brush assembly (2) is locked with the floor brush body (1); when the roller brush assembly (2) is in the unlocked position, the roller brush assembly (2) is unlocked and can be laterally withdrawn from the installation cavity (101); a positioning protrusion (201) is provided on the roller brush assembly (2), and a locked position groove (105) and an unlocked position groove (106) corresponding to the positioning protrusion (201) are provided on the floor brush body (1). A limiting block (202) is provided on the roller brush assembly (2), and a blocking block (107) corresponding to the limiting block (202) is provided on the floor brush body (1). When the roller brush assembly (2) is in the locked position, the limiting block (202) limits the blocking block (107) in the axial direction of the roller brush assembly (2).

9. The vacuum cleaner with a hair cutting mechanism according to claim 8, characterized in that, The telescopic cutter (4) further includes a tool holder (41) for mounting the blade (42). A limiting sliding groove (108) corresponding to the blade (42) is provided on the floor brush body (1). The blade (42) slides along the limiting sliding groove (108) and simultaneously slides in the radial direction of the roller brush assembly (2). A fourth guide slope (2021) is provided on the limiting block (202), and a fifth guide slope (411) corresponding to the fourth guide slope (2021) is provided on the tool holder (41). When the roller brush assembly (2) rotates from the unlocked position to the locked position, the fifth guide slope (411) is pushed by the fourth guide slope (2021) to make the telescopic cutter (4) slide and retract inwardly.

10. The vacuum cleaner with a hair cutting mechanism according to any one of claims 1-9, characterized in that, The roller brush assembly (2) includes a roller (21) and bristles (22) provided on the roller (21). The telescopic cutter (4) is placed at the side end of the bristles (22) close to the side opening (102), and several hair cutting mechanisms (3) are distributed along the circumferential direction of the roller brush assembly (2).

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