Cleaning base for vacuum cleaner and vacuum cleaner

Abstract

The utility model discloses a cleaning base for a vacuum cleaner and the vacuum cleaner. The cleaning base comprises a shell, a rolling brush, a driving mechanism and a cutting blade; the shell is provided with a dust suction part and a stirring cavity; the rolling brush is rotatably arranged in the stirring cavity around an axial lead; the driving mechanism is arranged on the shell and is used for driving the rolling brush to do circular motion around the axial lead; and the transmission mechanism is arranged on the shell and is constructed to be used for transmitting the power output by the driving mechanism to the cutting blade so as to enable the cutting blade to reciprocate. And a set of driving mechanism drives the rolling brush to rotate and the cutting blade to reciprocate, so that entanglements wound on the surface of the rolling brush can be cut and cleaned in time when the cleaning base performs cleaning operation on the surface to be cleaned, and the cleaning effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a cleaning base for a vacuum cleaner and a vacuum cleaner with the cleaning base. Background Art

[0002] A vacuum cleaner is a cleaning device suitable for cleaning floors, carpets and other surfaces, and is commonly found in commercial environments and industrial sites. When the vacuum cleaner moves on the surface to be cleaned and performs vacuuming operations, the dust-laden airflow is sucked in and filtered and collected. The filtered dust is collected in the dust collecting part of the vacuum cleaner (such as a dust box, dust cup or dust box), and the filtered air is discharged into the external environment. Since there are often some entanglements such as hair and silk threads on the surface to be cleaned that are easily entangled on the roller brush, these entanglements are easily stirred by the roller brush in the stirring chamber of the vacuum cleaner and entangled in the axial gap between the roller brush surface and the end of the roller brush after being sucked into the cleaning base with the airflow, resulting in a reduction in the cleaning ability of the roller brush and difficulty in rotating the roller brush, which in turn causes troubles in the cleaning operation. Therefore, there is an urgent need for a cleaning base that can clean the roller brush surface in time when performing a cleaning operation and a vacuum cleaner having the cleaning base. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a cleaning base that can clean the surface of the roller brush in time when performing cleaning operations, and a vacuum cleaner having the cleaning base.

[0004] In one aspect, the utility model provides a cleaning base for a vacuum cleaner, which is suitable for moving on a surface to be cleaned, and comprises:

[0005] A housing, wherein a dust suction part is provided at the bottom of the housing, and a stirring chamber is provided inside the housing and is in airflow communication with the dust suction part, wherein the dust suction part is configured to suck the dust-laden airflow on the surface to be cleaned;

[0006] A roller brush is rotatably arranged in the stirring chamber around an axis;

[0007] A driving mechanism, disposed on the housing and configured to drive the roller brush to perform circular motion around the axis;

[0008] A cutting blade is reciprocatably disposed on the housing and is in frictional contact with the surface of the roller brush;

[0009] The transmission mechanism is arranged on the housing and is configured to transmit the power output by the driving mechanism to the cutting blade so that the cutting blade moves back and forth.

[0010] According to an embodiment of the utility model, a limiting portion is provided on the cutting blade, and a limiting matching portion matching with the limiting portion is provided on the housing.

[0011] According to an embodiment of the utility model, the limiting portion includes at least one limiting groove arranged on the cutting blade, and the limiting matching portion includes at least one limiting column arranged on the housing.

[0012] According to an embodiment of the utility model, the shell includes a shell body and an upper cover, the top of the shell body is provided with an opening, the upper cover is detachably arranged on the opening, and the limiting fitting portion is arranged on the upper cover.

[0013] According to an embodiment of the utility model, the cutting blade has a blade portion extending obliquely toward the surface of the roller brush, and the blade portion has a plurality of cutting teeth arranged along the length direction of the cutting blade.

[0014] According to an embodiment of the utility model, the driving mechanism includes a motor, a driving wheel arranged on the output shaft of the motor, a driven wheel arranged at the end of the roller brush, and a transmission belt connected between the driving wheel and the driven wheel.

[0015] According to an embodiment of the utility model, the transmission mechanism includes a first transmission wheel, a second transmission wheel, a first composite gear and a second composite gear which are respectively rotatably arranged on the housing, and the first transmission wheel, the second transmission wheel, the first composite gear and the second composite gear are all located between the driving wheel and the driven wheel, one end of the first transmission wheel is provided with a first pulley portion connected to the transmission belt, and the other end is provided with a first gear portion, one end of the second transmission wheel is provided with a second pulley portion connected to the transmission belt, and the other end is provided with a second gear portion, one end of the first composite gear is provided with a first transmission tooth meshing with the first gear portion, and one end of the second composite gear is provided with a second transmission tooth meshing with the second gear portion.

[0016] According to one embodiment of the utility model, the first rack portion and the second rack portion are provided on opposite sides of the cutting blade, the other end of the first compound gear is provided with a first pushing tooth which is detachably engaged with the first rack portion, and the other end of the second compound gear is provided with a second pushing tooth which is detachably engaged with the second rack portion, and the transmission mechanism is constructed as follows: the first compound gear rotates synchronously with the second compound gear and when the first pushing tooth is engaged with the first rack portion, the second pushing tooth is disengaged from the second rack portion, thereby realizing the movement of the cutting blade along the first direction; the first compound gear rotates synchronously with the second compound gear and when the second pushing tooth is engaged with the second rack portion, the first pushing tooth is disengaged from the first rack portion, thereby realizing the movement of the cutting blade along the second direction opposite to the first direction.

[0017] According to an embodiment of the utility model, a tensioning wheel is rotatably provided on the housing, and the tensioning wheel is connected to the transmission belt and is located between the first transmission wheel and the second transmission wheel.

[0018] On the other hand, the utility model further provides a vacuum cleaner, comprising a cleaning base according to any one of the above technical solutions.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] By setting a cutting blade and a transmission mechanism, the cutting blade is reciprocatably arranged on the housing and in frictional contact with the surface of the roller brush, and the power of the driving mechanism is transmitted to the cutting blade through the transmission mechanism to realize the reciprocating movement of the cutting blade, thereby realizing a set of driving mechanisms driving the rotation of the roller brush and the reciprocating movement of the cutting blade, so that when the cleaning base performs a cleaning operation on the surface to be cleaned, the windings wound on the surface of the roller brush can be cut and cleaned in time, and the cleaning effect is good. The vacuum cleaner with the cleaning base has a good cleaning effect on the surface to be cleaned containing windings such as hair and silk threads. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of a cleaning base according to an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 A three-dimensional view of the cleaning base with the upper cover opened as shown in FIG.

[0023] Figure 3 yes Figure 2 A three-dimensional diagram showing a driving mechanism, a transmission mechanism and a cutting blade transmission cooperation being assembled on the housing of the cleaning base;

[0024] Figure 4 yes Figure 3 A perspective view of a cutting blade shown in ;

[0025] Figure 5 yes Figure 3 A side view schematic diagram of the driving mechanism, transmission mechanism and cutting blade transmission cooperation shown in FIG.

[0026] Figure 6 yes Figure 3 A three-dimensional diagram of the transmission cooperation between the driving mechanism and the transmission mechanism shown in FIG.

[0027] Figure 7 yes Figure 3 A schematic top view showing that the first pushing tooth of the first composite gear is engaged with the first rack portion of the cutting blade to push the cutting blade to move along the first direction;

[0028] Figure 8 yes Figure 3 Schematic top view of the cutting blade being pushed to move along the second direction when the second pushing tooth of the second composite gear meshes with the second rack portion of the cutting blade. DETAILED DESCRIPTION

[0029] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction on the technical solution of the utility model.

[0030] according to Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a cleaning base 100 for a vacuum cleaner, and the cleaning base 100 is suitable for moving on a surface to be cleaned and performing a cleaning operation. The surface to be cleaned that the cleaning base 100 is suitable for cleaning may include a tile surface, a marble surface, a cement floor, a carpet surface, a furniture surface, a wall surface, etc., without specific limitation. The cleaning base 100 includes a housing 10, a roller brush 20 and a driving mechanism 30.

[0031] A front wheel 16 is rotatably provided on the front side of the bottom of the shell 10, and a rear wheel 17 is rotatably provided on the rear side of the bottom of the shell 10. A rotating connector 19 is installed at the rear of the shell 10, and the rotating connector 19 is constructed to be used for connecting the handheld part of the vacuum cleaner. The rotating connector 19 includes a first rotating joint 191 and a second rotating joint 192 that are rotatably connected to each other, wherein the first rotating joint 191 is rotatably connected to the rear of the shell 10 around the axis line X1, and the second rotating joint 192 is rotatably connected to the first rotating joint 191 around the axis line X2, and the second rotating joint 192 can be connected to the handheld part of the vacuum cleaner. The handheld part is constructed so that the user can hold the handheld part and push the cleaning base 100 to move from back to front on the surface to be cleaned and perform cleaning operations.

[0032] A dust suction part 11 is provided at the front side of the bottom of the housing 10, and the dust suction part 11 is configured to suck the dust-containing airflow on the surface to be cleaned. In the present embodiment, the dust suction part 11 is a dust suction port provided at the front side of the bottom of the housing 10. In other embodiments, the dust suction part 11 may also be a suction nozzle installed at the front side of the bottom of the housing 10 and used to suck dust, and there is no specific limitation. A stirring chamber 12 connected to the airflow of the dust suction part 11 is provided inside the housing 10. The roller brush 20 is rotatably arranged in the stirring chamber 12 around an axis X3. The driving mechanism 30 is arranged on the housing 10 and is configured to drive the roller brush 20 to perform a circular motion around the axis X3. Among them, the driving mechanism 30 includes a motor 31, a driving wheel 32 arranged on the output shaft of the motor 31, a driven wheel 33 arranged at the end of the roller brush 20, and a transmission belt 34 connected between the driving wheel 32 and the driven wheel 33.

[0033] In order to avoid the belt slipping, which may cause unstable power transmission when the power output by the motor 31 is transmitted to the roller brush 20, in this embodiment, the transmission belt 34 is a toothed belt, and the driving wheel 32 and the driven wheel 33 are synchronous wheels. In other embodiments, the structure of the driving mechanism 30 is not limited to the belt transmission structure. The driving mechanism 30 may also adopt a chain transmission structure, such as replacing the driving wheel 32, the driven wheel 33 and the transmission belt 34 with a driving sprocket, a driven sprocket and a transmission chain; or adopt a gear meshing structure to transmit power, such as replacing the driving wheel 32 and the driven wheel 33 with a driving gear and a driven gear, which are connected to the driving gear through the motor 31, and the driving gear and the driven gear are meshed and transmitted, and there is no specific limitation.

[0034] The housing 10 is also provided with a suction duct 18 connected to the stirring chamber 12. One end of the suction duct 18 is connected to the stirring chamber 12. The other end of the suction duct 18 is passed through a rotating connector 19 and can be connected to the dust box on the handheld part of the vacuum cleaner. Then, the exhaust port of the dust box can be connected to the negative pressure source of the vacuum cleaner. The negative pressure source can be a negative pressure fan, an air compressor or a vacuum pump, which is not specifically limited.

[0035] When the vacuum cleaner is working, the cleaning base 100 moves from back to front on the surface to be cleaned and performs vacuuming. A negative pressure airflow is generated by a negative pressure source. The dust suction part 11 sucks the dust-containing airflow on the surface to be cleaned into the stirring chamber 12. The roller brush 20 moves in a circle around the axis X3 under the drive of the driving mechanism 30 and cleans the surface to be cleaned. The dust-containing airflow entering the stirring chamber 12 is sent into the dust box of the vacuum cleaner through the suction duct 18. The dust particles are filtered and collected in the dust box, and the air is sucked away by the negative pressure source and discharged into the external environment.

[0036] Since there are often some entanglements such as hair and silk threads on the surface to be cleaned that are easily entangled on the roller brush 20, these entanglements are easily stirred by the roller brush 20 in the stirring chamber 12 after being sucked into the cleaning base 100 with the airflow, and are easily entangled in the axial gap between the surface of the roller brush 20 and the end of the roller brush 20, resulting in reduced cleaning ability of the roller brush 20 and difficulty in rotating the roller brush 20, which in turn brings trouble to the cleaning operation.

[0037] according to Figure 2 and Figure 3 As shown, in order to solve the above problems, the cleaning base 100 further includes a cutting blade 40 and a transmission mechanism 50. The cutting blade 40 is arranged on the housing 10 so as to be reciprocatingly movable in the left-right direction and in frictional contact with the surface of the roller brush 20. The transmission mechanism 50 is arranged on the housing 10 and is configured to transmit the power output by the driving mechanism 30 to the cutting blade 40 to realize the reciprocating movement of the cutting blade 40. The cutting blade 40 is configured to cut slender objects such as hair, silk thread, etc. entangled on the surface of the roller brush 20.

[0038] By setting the cutting blade 40 and the transmission mechanism 50, the cutting blade 40 is reciprocatingly arranged on the housing 10 and is in frictional contact with the surface of the roller brush 20, and the power of the driving mechanism 30 is transmitted to the cutting blade 40 through the transmission mechanism 50 to realize the reciprocating movement of the cutting blade 40, thereby realizing a set of driving mechanisms 30 driving the rotation of the roller brush 20 and the reciprocating movement of the cutting blade 40, so that when the cleaning base 100 performs a cleaning operation on the surface to be cleaned, the windings wound on the surface of the roller brush 20 can be cut and cleaned in time, and the cleaning effect is good. The vacuum cleaner with the cleaning base 100 has a good cleaning effect on the surface to be cleaned containing windings such as hair.

[0039] In order to provide a good guiding and limiting effect on the cutting blade 40, a limiting portion 43 is provided on the cutting blade 40, and a limiting matching portion 141 matching with the limiting portion 43 is provided on the housing 10. The housing 10 includes a shell body 111 and an upper cover 14, the top of the shell body 111 is provided with an opening 13, the upper cover 14 is detachably provided on the opening 13, and the limiting matching portion 141 is provided on the upper cover 14. In this embodiment, the limiting portion 43 includes two limiting grooves arranged on the cutting blade 40 at intervals along the length direction of the cutting blade 40, and the limiting matching portion 141 includes two limiting columns arranged on the inner surface of the upper cover 14, which are clamped in two corresponding limiting grooves through the two limiting columns. Since the limiting groove is a waist-shaped groove, the cutting blade 40 with the waist-shaped groove is movable relative to the limiting column, so that the cutting blade 40 can reciprocate in the left and right directions relative to the housing 10. In other embodiments, the limiting portion 43 and the limiting matching portion 141 are not limited to the matching structure of a column and a groove, but may also be a sliding matching structure of a slide rail and a slider or a slider and a slide groove, without specific limitation.

[0040] according to Figure 4 As shown, in order to facilitate the cutting blade 40 to easily cut and sever the hair, silk thread and other windings wound on the surface of the roller brush 20, the cutting blade 40 has a blade portion 44 extending obliquely toward the surface of the roller brush 20, and the blade portion 44 has a plurality of cutting teeth 441 arranged along the length direction of the cutting blade 40. Since the cutting blade 40 extends along the axial direction of the roller brush 20 (that is, extends in the left-right direction) and frictionally contacts the surface of the roller brush 20, and the cutting blade 40 can reciprocate in the left-right direction, the plurality of cutting teeth 441 of the cutting blade 40 can repeatedly scratch the surface of the roller brush 20, thereby cutting the hair, silk thread and other windings wound on the surface of the roller brush 20.

[0041] according to Figure 5 and Figure 6As shown, the transmission mechanism 50 includes a first transmission wheel 51, a second transmission wheel 52, a first composite gear 53 and a second composite gear 54 which are rotatably arranged on the housing 10 respectively. The first transmission wheel 51, the second transmission wheel 52, the first composite gear 53 and the second composite gear 54 are all located between the driving wheel 32 and the driven wheel 33. One end of the first transmission wheel 51 is provided with a first pulley portion 511 connected to the transmission belt 34, and the other end is provided with a first gear portion 512. One end of the second transmission wheel 52 is provided with a second pulley portion 521 connected to the transmission belt 34, and the other end is provided with a second gear portion 522. The cutting blade 40 is provided with a first rack portion 41 and a second rack portion 42 on opposite sides (i.e., front and rear sides). One end of the first composite gear 53 is provided with a first transmission tooth 531 meshing with the first gear portion 512, and the other end is provided with a first push tooth 532 which is detachably meshed with the first rack portion 41. The second composite gear 54 has a second transmission tooth 541 meshing with the second gear portion 522 at one end thereof and a second pushing tooth 542 detachably meshing with the second rack portion 42 at the other end thereof.

[0042] It should be noted that, in the present embodiment, the first transmission wheel 51 and the second transmission wheel 52 are actually composite wheels. Taking the first transmission wheel 51 as an example, the first transmission wheel 51 is composited by a first pulley portion 511 and a first gear portion 512, wherein the first pulley portion 511 has a synchronous wheel structure, and the first gear portion 512 has a bevel gear structure, and the first gear portion 512 includes a circle of bevel teeth arranged along the circumference of the first transmission wheel 51. The second transmission wheel 52 has the same structure as the first transmission wheel 51, and will not be described in detail here. In addition, the first composite gear 53 and the second composite gear 54 are actually composite gear structures. Taking the first composite gear 53 as an example, the first composite gear 53 is composed of a first transmission tooth 531 and a first push tooth 532, wherein the first transmission tooth 531 has a bevel gear structure, and the first push tooth 532 has a spur gear structure. The first transmission tooth 531 includes a circle of bevel teeth arranged along the circumference of the first composite gear 53, and the first push tooth 532 includes a small arc-shaped spur teeth arranged along the circumference of the first composite gear 53. The second composite gear 54 has the same structure as the first composite gear 53, and will not be described here.

[0043] Since the first pushing tooth 532 of the first compound gear 53 and the second pushing tooth 542 of the second compound gear 54 are only provided with a small part of the arc segment, and the first compound gear 53 and the second compound gear 54 rotate synchronously when rotating, therefore, when the first pushing tooth 532 is engaged with the first rack portion 41 of the cutting blade 40, the second pushing tooth 542 is disengaged from the second rack portion 42 of the cutting blade 40; correspondingly, when the second pushing tooth 542 is engaged with the second rack portion 42 of the cutting blade 40, the first pushing tooth 532 is disengaged from the first rack portion 41 of the cutting blade 40.

[0044] according to Figure 7 and Figure 8 As shown, the transmission mechanism 50 is constructed as follows: the first compound gear 53 and the second compound gear 54 rotate synchronously and when the first push tooth 532 is engaged with the first rack portion 41, the second push tooth 542 is disengaged from the second rack portion 42, thereby realizing that the cutting blade 40 moves along the first direction (that is, from right to left); the first compound gear 53 and the second compound gear 54 rotate synchronously and when the first push tooth 532 is disengaged from the first rack portion 41, the second push tooth 542 is engaged with the second rack portion 42, thereby realizing that the cutting blade 40 moves along the second direction opposite to the first direction (that is, from left to right).

[0045] Thus, the transmission mechanism 50 transmits the power output by the driving mechanism 30 to the cutting blade 40, so that the cutting blade 40 can reciprocate in the first direction and the second direction (ie, in the left and right directions) to perform a cutting action.

[0046] According to Figure 6 As shown, since the transmission ratio of the driving wheel 32 and the driven wheel 33 is relatively large, the size of the driven wheel 33 installed at the end of the roller brush 20 is much larger than the size of the driving wheel 32, which makes the positions of the first transmission wheel 51 and the second transmission wheel 52 different in the height direction, and the installation position of the second transmission wheel 52 is higher than the installation position of the first transmission wheel 51. In order to ensure that the transmission belt 34 can always be tensioned and connected with the first transmission wheel 51 and the second transmission wheel 52, and to ensure that the power output by the motor 31 can be effectively transmitted to the first transmission wheel 51 and the second transmission wheel 52, a tensioning wheel 15 is rotatably provided on the shell 10, and the tensioning wheel 15 is connected to the transmission belt 34 and is located between the first transmission wheel 51 and the second transmission wheel 52.

[0047] according to Figure 2 , Figure 5 , Figure 7 and Figure 8As shown, in the present embodiment, the working principle of the cleaning base 100 is realized as follows: when the cleaning base 100 moves on the surface to be cleaned and performs the cleaning operation, the motor 31 is running, the driving wheel 32 on the output shaft of the motor 31 rotates in the clockwise direction, and transmits the power to the driven wheel 33 at the end of the roller brush 20 through the transmission belt 34, the driven wheel 33 also rotates in the clockwise direction and drives the roller brush 20 to perform a circular motion around the axis X3, so that the roller brush 20 cleans the surface to be cleaned; at the same time, the driving wheel 32 on the output shaft of the motor 31 also transmits the power to the first transmission wheel 51 and the second transmission wheel 52 through the transmission belt 34, the first transmission wheel 51 and the second transmission wheel 52 rotate synchronously in the clockwise direction, the first transmission wheel 51 is meshed with the first composite gear 53 for transmission, and the first transmission wheel 51 is meshed with the first composite gear 53 for transmission. The second transmission wheel 52 is meshed with the second composite gear 54 for transmission, so that the first composite gear 53 and the second composite gear 54 rotate synchronously in the counterclockwise direction, and the first pushing tooth 532 on the first composite gear 53 is meshed with the first rack portion 41 of the cutting blade 40 for transmission, thereby pushing the cutting blade 40 to move along the first direction (i.e., from right to left); then the first composite gear 53 and the second composite gear 54 continue to rotate until the first pushing tooth 532 on the first composite gear 53 is disengaged from the first rack portion 41 on the cutting blade 40, and then the second pushing tooth 542 on the second composite gear 54 is meshed with the second rack portion 42 on the cutting blade 40 for transmission, thereby pushing the cutting blade 40 to move along the second direction (i.e., from left to right), thereby completing a reciprocating cutting action.

[0048] The technical scope of the present invention is not limited to the contents in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A cleaning base for a vacuum cleaner, adapted to move over a surface to be cleaned, characterized in that: include: A housing, wherein a dust suction part is provided at the bottom of the housing, and a stirring chamber is provided inside the housing and is in airflow communication with the dust suction part, wherein the dust suction part is configured to suck the dust-laden airflow on the surface to be cleaned; A roller brush is rotatably arranged in the stirring chamber around an axis; A driving mechanism, disposed on the housing and configured to drive the roller brush to perform circular motion around the axis; A cutting blade is reciprocatably disposed on the housing and is in frictional contact with the surface of the roller brush; The transmission mechanism is arranged on the housing and is configured to transmit the power output by the driving mechanism to the cutting blade so that the cutting blade moves back and forth.

2. The cleaning base according to claim 1, characterized in that: The cutting blade is provided with a limiting portion, and the housing is provided with a limiting matching portion matching with the limiting portion.

3. The cleaning base according to claim 2, characterized in that: The limiting portion includes at least one limiting groove arranged on the cutting blade, and the limiting matching portion includes at least one limiting column arranged on the housing.

4. The cleaning base according to claim 2, characterized in that: The shell comprises a shell body and an upper cover, the top of the shell body is provided with an opening, the upper cover is detachably arranged on the opening, and the limiting matching portion is arranged on the upper cover.

5. The cleaning base according to claim 1, characterized in that: The cutting blade has a blade portion extending obliquely toward the surface of the roller brush, and the blade portion has a plurality of cutting teeth arranged along the length direction of the cutting blade.

6. The cleaning base according to claim 1, characterized in that: The driving mechanism comprises a motor, a driving wheel arranged on the output shaft of the motor, a driven wheel arranged at the end of the roller brush, and a transmission belt connected between the driving wheel and the driven wheel.

7. The cleaning base according to claim 6, characterized in that: The transmission mechanism includes a first transmission wheel, a second transmission wheel, a first composite gear and a second composite gear which are rotatably arranged on the housing respectively. The first transmission wheel, the second transmission wheel, the first composite gear and the second composite gear are all located between the driving wheel and the driven wheel. One end of the first transmission wheel is provided with a first pulley portion connected to the transmission belt, and the other end is provided with a first gear portion. One end of the second transmission wheel is provided with a second pulley portion connected to the transmission belt, and the other end is provided with a second gear portion. One end of the first composite gear is provided with a first transmission tooth meshing with the first gear portion, and one end of the second composite gear is provided with a second transmission tooth meshing with the second gear portion.

8. The cleaning base according to claim 7, characterized in that: The cutting blade is provided with a first rack portion and a second rack portion on opposite sides, the other end of the first compound gear is provided with a first pushing tooth which is detachably engaged with the first rack portion, and the other end of the second compound gear is provided with a second pushing tooth which is detachably engaged with the second rack portion. The transmission mechanism is constructed as follows: the first compound gear rotates synchronously with the second compound gear and when the first pushing tooth is engaged with the first rack portion, the second pushing tooth is disengaged from the second rack portion, thereby realizing the movement of the cutting blade along the first direction; the first compound gear rotates synchronously with the second compound gear and when the second pushing tooth is engaged with the second rack portion, the first pushing tooth is disengaged from the first rack portion, thereby realizing the movement of the cutting blade along the second direction opposite to the first direction.

9. The cleaning base according to claim 7, characterized in that: A tension wheel is rotatably arranged on the shell, and the tension wheel is connected to the transmission belt and is located between the first transmission wheel and the second transmission wheel.

10. A vacuum cleaner, characterized in that: The cleaning base comprises the cleaning base as claimed in any one of claims 1 to 9.

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