CN208910050U - The ground brush assemblies of dust catcher and dust catcher with it - Google Patents

Abstract

The utility model discloses a kind of ground brush assemblies of dust catcher and with its dust catcher, it include: scrubbing brush bottom plate, motor cover, round brush, motor and clutch, the motor cover is rotatably connected between the first position and the second position on the scrubbing brush bottom plate, the round brush is rotatably connected on the scrubbing brush bottom plate, the motor is located in the motor cover, and the motor has motor shaft, the clutch cooperates with the motor shaft and round brush transmission respectively, wherein, the clutch is configured to, the rotary motion of the motor shaft is transferred to the round brush when motor cover is located at the first position, the motor cover disconnects the transmission connection of the transmission component Yu the motor shaft when being located at the second position.The ground brush assemblies of dust catcher according to the present utility model not only can control round brush work, reduce the energy consumption of dust catcher, and more convenient using motor cover operation clutch.

Description

The ground brush assemblies of dust catcher and dust catcher with it

Technical field

The utility model relates to cleaner technology fields, and in particular, to a kind of ground brush assemblies of dust catcher and have it Dust catcher.

Background technique

Dust catcher in the related technology, round brush are driven by motor by belt, are rolled when not using scrubbing brush during cleaning Brush is also that can rotate with the work of motor, and only in the case where turning off motor, round brush can stop operating.Round brush continues Work not only increases the energy consumption of dust catcher, and is easily damaged belt.

Increase clutch configuration in existing some dust catchers, using clutch control round brush rotation whether, but it is raw Higher cost is produced, the cost of dust catcher has been increased considerably.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art.

For this purpose, described ground brush assemblies are rolled using clutch control the utility model proposes a kind of ground brush assemblies of dust catcher The rotation of brush, structure is simple, and cost is relatively low.

The utility model also proposes a kind of dust catcher with above-mentioned ground brush assemblies.

According to the ground brush assemblies of the dust catcher of the utility model first aspect, comprising: scrubbing brush bottom plate, motor cover, round brush, electricity Machine and clutch, the motor cover are rotatably connected between the first position and the second position on the scrubbing brush bottom plate, institute It states round brush to be rotatably connected on the scrubbing brush bottom plate, the motor is located in the motor cover, and the motor has electricity Arbor, the clutch cooperate with the motor shaft and round brush transmission respectively, wherein the clutch is configured to, institute It states and the rotary motion of the motor shaft is transferred to the round brush when motor cover is located at the first position, the motor cover is located at The transmission connection of the transmission component Yu the motor shaft is disconnected when the second position.

The ground brush assemblies of dust catcher according to the present utility model drive clutch to work, and then control electricity using motor cover Drive connection between hood and round brush can not only prevent round brush from continuing working, and reduce the energy consumption of dust catcher, and utilize Motor cover operation clutch is more convenient, whether user can control the rotation of round brush in use.

According to the ground brush assemblies of the dust catcher of the utility model one embodiment, the clutch includes: shaft, the first biography Driving wheel, the second driving wheel, the first transmission belt, the second transmission belt and actuator, the shaft are rotatably arranged at the scrubbing brush bottom On plate, first driving wheel is rotatably sleeved in the shaft, and second rotating wheel is set in the shaft simultaneously It is rotated synchronously with the shaft, first transmission belt is stretched in the motor shaft and first driving wheel or second biography On driving wheel, second transmission belt is stretched on the shaft and the round brush, and the actuator can along the axial direction of the shaft It is movably located on the scrubbing brush bottom plate, one end of the actuator is slidably connected with first transmission belt, the driving The other end of part and the motor cover cooperate, and drive first transmission belt to exist by the actuator when motor cover rotates Switch between first driving wheel and second driving wheel.

One embodiment according to the present utility model, the actuator include: sliding bar, baffle and elastic component, the cunning Lever is located on the scrubbing brush bottom plate, and the motor cover is connected with the one end fits of the sliding bar and drives the sliding bar edge The axial movement of the shaft, the baffle are located at the other end of the sliding bar, and the baffle and first transmission belt are sliding It is dynamic to drive first transmission belt to switch between first driving wheel and second driving wheel with merging, the elastic component It is located between the sliding bar and the scrubbing brush bottom plate, and the elastic component often pushes the sliding bar towards the motor cover Direction is mobile.

Optionally, the motor cover is equipped with the driving boss that cooperates with the sliding bar, and the motor cover is from described the Driving boss promotion sliding bar movement when being rotated to the second position of one position.

Further, it is U-shaped on first transmission belt to be formed as straddle seat for the cross section of the baffle.

One embodiment according to the present utility model, the scrubbing brush bottom plate are equipped with the installation for being parallel to the shaft arrangement Column defines the open at one end towards the baffle of hollow cavity and the hollow cavity, the sliding rod set in the sliding bar It is located in the mounting post, the elastic component is only against between the mounting post and the sliding bar.

One embodiment according to the present utility model, the clutch further include: bracket, the bracket are connected to describedly On brush bottom plate, the shaft is rotatably connected on the bracket.

Optionally, first bearing is equipped between the shaft and the bracket.

One embodiment according to the present utility model is equipped with second bearing between first driving wheel and the shaft.

One embodiment according to the present utility model, the central axis of the motor shaft, the shaft central axis and The central axis of the round brush is parallel to each other.

According to the ground brush assemblies of the dust catcher of the utility model one embodiment, the central axis of the motor shaft with it is described The pivot center of motor cover is overlapped.

According to the ground brush assemblies of the dust catcher of the utility model one embodiment, the lower surface of the scrubbing brush bottom plate is equipped with neighbour The air inlet of the nearly round brush arrangement defines the airflow channel for being connected to the air inlet in the motor cover.

According to the dust catcher of the utility model second aspect, including guide duct, blower and according to above-described embodiment Ground brush assemblies, one end of the guide duct are connected with the motor cover, and the guide duct is equipped with handle portion, the blower and institute The other end for stating guide duct is connected.

The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description In become obvious, or recognized by the practice of the utility model.

Detailed description of the invention

The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will Become obvious and be readily appreciated that, in which:

Fig. 1 is the structural representation being located at first position according to the motor cover of the ground brush assemblies of the utility model embodiment Figure；

Fig. 2 is the bottom view of structure in Fig. 1；

Fig. 3 is the structural representation for being located at the second place according to the motor cover of the ground brush assemblies of the utility model embodiment Figure；

Fig. 4 is the bottom view of structure in Fig. 3；

Fig. 5 is the structural schematic diagram according to the clutch of the ground brush assemblies of the utility model embodiment.

Appended drawing reference:

100: ground brush assemblies；

10: scrubbing brush bottom plate；11: mounting post；20: motor cover；21: driving boss；30: round brush；

40: clutch；41: shaft；42: the first driving wheels；43: the second driving wheels；44: the first transmission belts；

45: the second transmission belts；46: actuator；461: sliding bar；462: baffle；463: elastic component；

47: bracket；48: first bearing；49: second bearing；

50: motor.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model Limitation.

In the description of the present invention, it should be understood that term " center ", " thickness ", "upper", "lower", " left side ", The orientation or positional relationship of the instructions such as " right side ", "inner", "outside", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model System.In addition, defining " first ", the feature of " second " can explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Below with reference to Fig. 1 to Fig. 5 description according to the dust catcher of the utility model embodiment.

According to the dust catcher of the utility model one embodiment, dust catcher includes: ground brush assemblies 100, guide duct and blower. Ground brush assemblies 100 are connected by guide duct with blower, and blower forms negative pressure in ground brush assemblies 100 by air guide duct, are played The effect of dedusting.

Firstly, describing the ground brush assemblies 100100 according to the dust catcher of the utility model embodiment with reference to the accompanying drawings.

As illustrated in fig. 1 and 2, one embodiment according to the present utility model, ground brush assemblies 100 include: scrubbing brush bottom plate 10, electricity Hood 20, round brush 30, motor 50 and clutch 40.

Specifically, defining round brush installation cavity and motor cover mounting groove in scrubbing brush bottom plate 10, round brush 30 rotationally connects It connects in the round brush installation cavity of scrubbing brush bottom plate 10, motor cover 20 is in first position (position as illustrated in fig. 1 and 2) and the second position It is rotatably connected on the motor cover mounting groove of scrubbing brush bottom plate 10 between (position as shown in Figures 3 and 4).Motor 50 is located at electricity In hood 20, motor 50 has motor shaft, and clutch 40 cooperates with motor shaft and the transmission of round brush 30 respectively.Clutch 40 is connected to Between motor shaft and round brush 30, and clutch 40 and motor cover 20 are cooperatively connected.

Wherein, clutch 40 is configured to, and the rotary motion of motor shaft is transferred to by motor cover 20 when being located at first position Round brush 30, motor cover 20 disconnect the transmission connection of transmission component and motor shaft when being located at the second position.That is, working as motor cover 20 in first position, and the power that clutch 40 can transmit motor shaft drives round brush 30 to rotate, when motor cover 20 is located at second When setting, the transmission effect between motor shaft and round brush 30 is disconnected, and round brush 30 stops rotating.

The ground brush assemblies 100 of dust catcher according to the present utility model as a result, drive 40 work of clutch using motor cover 20 Make, and then control the drive connection between motor cover 20 and round brush 30, not only can prevent round brush 30 from continuing working, reduce suction The energy consumption of dirt device, and it is more convenient using the operation clutch 40 of motor cover 20, and user can control round brush in use Whether 30 rotation.

It can be promoted according to the dust catcher of the utility model embodiment by using the ground brush assemblies 100 of above-described embodiment The performance of dust catcher, advantageously reduces energy consumption, provides convenience for user's operation.

As shown in Figures 1 to 4, a specific embodiment according to the present utility model, clutch 40 include: shaft 41, first Driving wheel 42, the second driving wheel 43, the first transmission belt 44, the second transmission belt 45 and actuator 46.

Specifically, shaft 41 is rotatably arranged on scrubbing brush bottom plate 10, the first driving wheel 42, which is rotatably sleeved on, to be turned On axis 41, the second rotating wheel is set in shaft 41 and rotates synchronously with shaft 41, that is to say, that when the first driving wheel 42 rotates The rotation of shaft 41 is not will drive, the second driving wheel 43 will drive the rotation of shaft 41 when rotating.First transmission belt 44 is stretched in motor On axis and the first driving wheel 42 or the second driving wheel 43, i.e. the first transmission belt 44 be connected to motor shaft and the first driving wheel 42 it Between, motor shaft drives the rotation of the first driving wheel 42 or the first transmission belt 44 to be connected between motor shaft and the second driving wheel 43, Motor shaft drives the rotation of the second driving wheel 43.One end of first transmission belt 44 connects motor shaft, and the other end is in the first driving wheel 42 Switch between the second driving wheel 43.Second transmission belt 45 is stretched on shaft 41 and round brush 30, and the connection of the second transmission belt 45 turns Axis 41 and round brush 30, round brush 30 and shaft 41 rotate synchronously.

Wherein, being axially movably located on scrubbing brush bottom plate 10 along shaft 41 of actuator 46, one end of actuator 46 with First transmission belt 44 is slidably connected, in the dust catcher course of work, what when motor 50 continued working, therefore the first transmission belt 44 is It persistently rotates, actuator 46 is slidably connected with the first transmission belt 44, prevents the first transmission belt 44 damage actuator 46 or shadow Actuator 46 is rung to work.The other end and motor cover 20 of actuator 46 cooperate, and are driven when motor cover 20 rotates by actuator 46 First transmission belt 44 switches between the first driving wheel 42 and the second driving wheel 43.

As shown in Figures 1 to 4, motor cover 20 drives the first transmission belt 44 along the axial direction of shaft 41 by actuator 46 Mobile, when motor cover 20 is located at first position, when the first transmission belt 44 is closer apart from motor cover 20, the first transmission belt 44 is connected to On first driving wheel 42, the first driving wheel 42 not will drive the rotation of shaft 41, at this point, round brush 30 does not rotate.Motor cover 20 is located at When the second position, motor cover 20 drives actuator 46 mobile, and the first transmission belt 44 is moved towards apart from the farther away direction of motor cover 20 Dynamic, the first transmission belt 44 is connected on the second driving wheel 43 and shaft 41 is driven to rotate at this time, and then shaft 41 is passed by second Dynamic band 45 drives round brush 30 to rotate.

The structure and the course of work of above-mentioned clutch 40 are relatively simple, not only can control the rotation of round brush 30, but also each Component is easier to obtain, and lower production costs, assembling process is simple, easy to operate.

Further, as shown in figure 4, actuator 46 includes: sliding bar 461, baffle 462 and elastic component 463.

Sliding bar 461 is connected with scrubbing brush bottom plate 10 and along the axially movable of shaft 41, one end of sliding bar 461 and motor 20 cooperation of cover is connected, and drives sliding bar 461 to be directed away from motor cover 20 when motor cover 20 turns to the second position from first position Direction it is mobile.Baffle 462 is located at the other end of sliding bar 461, and baffle 462 is slidably matched with the first transmission belt 44, motor cover In 20 driving 461 moving process of sliding bar, baffle 462 drives the first transmission belt 44 to be moved to the second transmission from the first driving wheel 42 On wheel 43.Elastic component 463 is located between sliding bar 461 and scrubbing brush bottom plate 10, can be spring, and elastic component 463 often pushes sliding Bar 461 is mobile towards the direction of motor cover 20, and when motor cover 20 is moved to first position from the second position, elastic component 463 is driven Dynamic sliding bar 461 is mobile towards the direction of motor cover 20, at this point, baffle 462 drives the first transmission belt 44 from the second driving wheel 43 It is moved on the first driving wheel 42.

The actuator 46 of above structure, using baffle 462 control the first transmission belt 44 position, using sliding bar 461 with The cooperation driving baffle 462 of motor cover 20 is mobile, is then resetted using the elastic force effect driving sliding bar 461 of elastic component 463, individually The structure of component is simple, is easy to get, and each component combination can preferably drive the movement of the first transmission belt 44, production cost compared with It is low and easy to assembly, it is easy maintenance.

As shown in Figure 1, in the present embodiment, motor cover 20 is equipped with the driving boss 21 cooperated with sliding bar 461, motor Driving boss 21 pushes sliding bar 461 mobile when cover 20 is rotated from first position to the second position, is also possible to groove, works as motor When cover 20 is located at first position, the end of sliding bar 461 is located in groove, when motor cover 20 turns to the second position, sliding bar 461 skid off out of groove.Sliding bar 461 is driven using driving boss 21 or groove, structure is simple, and it is easy to operate, and be not necessarily to Additional setting driving mechanism, reduces the cost of dust catcher.

Further, it is U-shaped on the first transmission belt 44 to be formed as straddle seat for the cross section of baffle 462, and U-shaped baffle 462 covers It is located on the first transmission belt 44, the first transmission belt 44 can be driven in the both direction of left and right, can not only be driven for actuator 46 It is convenient that dynamic first transmission belt 44 provides, and can prevent the first sliding axially along shaft 41 of transmission belt 44, influences dust catcher It works normally, improves the job stability of clutch 40.

Further, in certain embodiments, scrubbing brush bottom plate 10 is equipped with the mounting post for being parallel to the arrangement of shaft 41 11, the open at one end towards baffle 462 of hollow cavity and hollow cavity is defined in sliding bar 461, that is to say, that sliding bar 461 It can be the tubulose of open at one end, baffle 462 is located at the open one end of sliding bar 461, and sliding bar 461 is set in mounting post 11 On, elastic component 463 is only against between mounting post 11 and sliding bar 461, and elastic component 463 can be spring, and spring can be set in In mounting post 11, it can also be located at only to being located between the end of mounting post 11 and the bottom wall of hollow cavity, the bottom wall of hollow cavity refers to Be the one end of hollow cavity far from open ports inner surface.

By the way that mounting post 11 is arranged on scrubbing brush bottom plate 10, can be provided for the installation of sliding bar 461 conveniently, and slide Bar 461 is set in mounting post 11, and movement routine is clear, is preventing the movement routine obliquity effects clutch 40 of sliding bar 461 just Often work, furthermore, mounting post 11 can promote the mounting stability of sliding bar 461.

One embodiment according to the present utility model, clutch 40 further include: bracket 47, bracket 47 are connected to scrubbing brush bottom plate On 10, shaft 41 is rotatably connected on bracket 47.It can be shaft 41 by the way that bracket 47 is arranged on scrubbing brush bottom plate 10 It is convenient that assembly provides, and can promote the Assembly stability of shaft 41, prevents shaft 41 from shaking or falling off, and guarantees clutch 40 Steady operation.

Optionally, first bearing 48 is equipped between shaft 41 and bracket 47, it is possible thereby to mitigate shaft 41 and bracket 47 it Between frictional resistance, promoted round brush 30 rotation speed and efficiency.

Similarly, second bearing 49 is equipped between the first driving wheel 42 and shaft 41, can mitigate the first driving wheel 42 with Frictional resistance between shaft 41 prevents from leading to shaft 41 because the frictional resistance between the first driving wheel 42 and shaft 41 is larger Synchronous rotary guarantees 40 job stability of clutch.

One embodiment according to the present utility model, the central axis of motor shaft, the central axis of shaft 41 and round brush 30 Central axis be parallel to each other.The central axis of motor shaft and the centerline axis parallel of shaft 41, the vertical electricity of the first transmission belt 44 Arbor arrangement, can not only promote the transmission efficiency of the first transmission belt 44, moreover it is possible to prevent the torsion of the first transmission belt 44 from causing to concentrate Damage, can extend the service life of the first transmission belt 44, similarly, the central axis of shaft 41 and the central axis of round brush 30 The transmission efficiency of the second transmission belt 45 can be promoted by being parallel to each other, and extend the service life of the second transmission belt 45.

As shown in figs. 1 and 3, according to the ground brush assemblies 100 of the dust catcher of the utility model one embodiment, in motor shaft Mandrel line is overlapped with the pivot center of motor cover 20, that is to say, that in 20 rotation process of motor cover, the position of motor shaft is kept not Become, the distance between motor shaft and shaft 41 will not change with the rotation of motor cover 20, thereby it is ensured that the first transmission belt 44 begins The state for keeping tensioning eventually prevents the rotation of motor cover 20 from influencing the first transmission belt 44 and works normally.

A specific embodiment according to the present utility model, the lower surface of scrubbing brush bottom plate 10 are equipped with air inlet, and air inlet is adjacent Nearly round brush 30 is arranged, the dust shake on carpet is driven in 30 rotation process of round brush, air inlet is subsequently entered, can promote dust suction The cleaning effect of device.

The airflow channel of connection air inlet is defined in motor cover 20, airflow channel is connected to guide duct.Dust passes through air inlet Mouth enters airflow channel, then enters dust collecting installation by guide duct.And user can control motor by guide duct Cover 20 rotates between the first position and the second position, operates more convenient.

According to other compositions of the dust catcher of the utility model embodiment and operate for those of ordinary skill in the art For be all it is known, be not detailed herein.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.

While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that: These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective And modification, the scope of the utility model are defined by the claims and their equivalents.

Claims (13)

1. a kind of ground brush assemblies of dust catcher characterized by comprising

Scrubbing brush bottom plate；

Motor cover, the motor cover are rotatably connected between the first position and the second position on the scrubbing brush bottom plate；

Round brush, the round brush are rotatably connected on the scrubbing brush bottom plate；

Motor, the motor are located in the motor cover, and the motor has motor shaft；

Clutch, the clutch cooperate with the motor shaft and round brush transmission respectively；

Wherein, the clutch is configured to, and the motor cover transports the rotation of the motor shaft when being located at the first position Dynamic to be transferred to the round brush, the motor cover disconnects the round brush when being located at the second position and the transmission of the motor shaft connects It connects.

2. the ground brush assemblies of dust catcher according to claim 1, which is characterized in that the clutch includes:

Shaft, the shaft are rotatably arranged on the scrubbing brush bottom plate；

First driving wheel, first driving wheel are rotatably sleeved in the shaft；

Second driving wheel, second rotating wheel are set in the shaft and rotate synchronously with the shaft；

First transmission belt, first transmission belt are stretched in the motor shaft and first driving wheel or second driving wheel On；

Second transmission belt, second transmission belt are stretched on the shaft and the round brush；

Actuator, the actuator are axially movably located on the scrubbing brush bottom plate along the shaft, the actuator One end is slidably connected with first transmission belt, and the other end of the actuator and the motor cover cooperate, the motor cover First transmission belt is driven to cut between first driving wheel and second driving wheel by the actuator when rotation It changes.

3. the ground brush assemblies of dust catcher according to claim 2, which is characterized in that the actuator includes:

Sliding bar, the sliding bar are located on the scrubbing brush bottom plate, and the motor cover is connected with the one end fits of the sliding bar And drive the sliding bar along the axial movement of the shaft；

Baffle, the baffle are located at the other end of the sliding bar, and the baffle matches with first drive belt slip and merges drive It moves first transmission belt and switches between first driving wheel and second driving wheel；

Elastic component, the elastic component are located between the sliding bar and the scrubbing brush bottom plate, and described in the elastic component often pushes Sliding bar is mobile towards the direction of the motor cover.

4. the ground brush assemblies of dust catcher according to claim 3, which is characterized in that the motor cover is equipped with and the cunning Lever cooperation driving boss, the motor cover when being rotated from the first position to the second position driving boss push away It is mobile to move the sliding bar.

5. the ground brush assemblies of dust catcher according to claim 3, which is characterized in that the cross section of the baffle be formed as across Seat is U-shaped on first transmission belt.

6. the ground brush assemblies of dust catcher according to claim 3, which is characterized in that the scrubbing brush bottom plate is equipped with and is parallel to The mounting post of shaft arrangement defines one end towards the baffle of hollow cavity and the hollow cavity in the sliding bar It opens wide, the sliding bar is set in the mounting post, and the elastic component is only against between the mounting post and the sliding bar.

7. the ground brush assemblies of dust catcher according to claim 2, which is characterized in that the clutch further include:

Bracket, the bracket are connected on the scrubbing brush bottom plate, and the shaft is rotatably connected on the bracket.

8. the ground brush assemblies of dust catcher according to claim 7, which is characterized in that set between the shaft and the bracket There is first bearing.

9. the ground brush assemblies of dust catcher according to claim 2, which is characterized in that first driving wheel and the shaft Between be equipped with second bearing.

10. the ground brush assemblies of dust catcher according to claim 2, which is characterized in that the central axis of the motor shaft, institute The central axis of the central axis and the round brush of stating shaft is parallel to each other.

11. the ground brush assemblies of -10 described in any item dust catchers according to claim 1, which is characterized in that in the motor shaft Mandrel line is overlapped with the pivot center of the motor cover.

12. the ground brush assemblies of -10 described in any item dust catchers according to claim 1, which is characterized in that the scrubbing brush bottom plate Lower surface is equipped with the air inlet of neighbouring round brush arrangement, defines in the motor cover and be connected to the air-flow of the air inlet and lead to Road.

13. a kind of dust catcher characterized by comprising

The ground brush assemblies of dust catcher described in any one of -12 according to claim 1；

Guide duct, one end of the guide duct are connected with the motor cover, and the guide duct is equipped with handle portion.