CN211355206U - Dust collection floor brush and dust collector with same - Google Patents

Abstract

The utility model provides a dust absorption scrubbing brush and have its dust catcher. The dust absorption scrubbing brush includes: a floor brush housing; the front rolling brush and the rear rolling brush are arranged in parallel; the dust collection air duct comprises an air suction opening positioned between the front rolling brush and the rear rolling brush, an air outlet positioned behind or above the rear rolling brush and a main air duct connected to the upstream of the air outlet; the air guide assembly comprises a first air guide piece and a second air guide piece for separating the main air duct and the rear rolling brush; the first air guide piece is in contact with the working surface and divides the air suction opening into a front air suction opening and a rear air suction opening; the dust absorption air duct also comprises a front air suction duct connected to the downstream of the front air suction opening, and the front air suction duct is formed between the front rolling brush and the first air guide piece; the second air guide piece extends from the air outlet to the position between the front rolling brush and the rear rolling brush until the extending tail end separates the dust-containing airflow flowing out of the front air suction duct from the rear rolling brush, and the problem that the rear rolling brush is stuck after being wound with hair is solved.

Description

Dust collection floor brush and dust collector with same

Technical Field

The utility model belongs to the technical field of clean electrical apparatus, especially, relate to a dust absorption scrubbing brush and have dust catcher of this dust absorption scrubbing brush.

Background

A dust collector is a cleaning appliance used for removing dust in working surfaces, carpets, walls, furniture, clothes and various gaps. The double-rolling brush dust collector mainly comprises a suction device, a suction pipeline and a dust collection floor brush with two rolling brushes. A suction device mainly formed by a motor and a fan is arranged in the cleaner body; the suction pipeline comprises a suction head, a dust collection rigid pipe and a dust collection hose, the suction head is provided with a suction port with a downward opening, and the suction port is communicated with a suction inlet of a fan in the dust collector body through the dust collection rigid pipe and the dust collection hose; the two roll brushes are typically arranged side by side in the direction of travel of the cleaner and are located adjacent below the suction opening. When the dust collector performs cleaning operation, the two rolling brushes can gather dust/foreign matters on the working surface to the air suction port, and then the dust/foreign matters enter a dust barrel in the machine body of the dust collector along the suction pipeline under the driving of air flow, so that the cleaning of the working surface is completed.

At present, a common dust collector with double rolling brushes is available in the market, the rotating direction of the rolling brush which is arranged in front relatively in the advancing direction is generally the same as that of a travelling wheel of the dust collector, namely, the front rolling brush cleans dust/foreign matters backwards, so that the rolling brush which is arranged in back relatively is easy to expose in the dust/foreign matters which are cleaned in front, and then the back rolling brush is easy to wind hairs and is difficult to clean, and even the back rolling brush is blocked.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the rear rolling brush provided in the prior art is easy to wind hair, the utility model aims to provide a dust absorption floor brush and a dust collector with the dust absorption floor brush, which can effectively avoid the rear rolling brush from winding hair.

In order to realize one of the above purposes of the utility model, the utility model provides a dust absorption scrubbing brush, include:

a floor brush housing;

the rolling brush assembly is arranged on the floor brush shell and comprises a front rolling brush and a rear rolling brush which are arranged in parallel;

the dust collection air duct comprises an air suction opening, an air outlet and a main air duct connected to the upstream of the air outlet, the air suction opening is positioned between the front rolling brush and the rear rolling brush, and the air outlet is positioned behind or above the rear rolling brush;

the air guide assembly is arranged on the scrubbing brush shell and comprises a first air guide piece and a second air guide piece for separating the main air duct from the rear rolling brush; the first air guide piece is in contact with a working surface and divides the air suction opening into a front air suction opening corresponding to the front rolling brush and a rear air suction opening corresponding to the rear rolling brush; the dust absorption air duct also comprises a front air suction duct connected to the downstream of the front air suction opening, and the front air suction duct is formed between the front rolling brush and the first air guide piece; the second air guide piece extends from the air outlet to a position between the front rolling brush and the rear rolling brush until the extending tail end separates the dust-containing airflow flowing out of the front air suction duct from the rear rolling brush.

As a further improvement of an embodiment of the present invention, the front end portion of the first wind guide contacts the working surface.

As an improvement of an embodiment of the present invention, the first wind guiding member includes a body and a flexible glue structure or a brush structure disposed on the body, the flexible glue structure or the brush structure contacts with the working surface.

As a further improvement of an embodiment of the present invention, the first air guide includes:

the two ends of the upper matching structure in the longitudinal direction are rotationally connected to the floor brush shell around the pivot shaft;

the blocking structure is connected with the matching structure, synchronously rotates around the pivot shaft along with the matching structure, is contacted with the working surface, and has a vertical state extending vertically to the working surface from top to bottom and an inclined state extending forwards and/or backwards from top to bottom.

As a further improvement of an embodiment of the present invention, the first air guiding member includes a front air guiding portion, and the front air suction channel is formed between the front rolling brush and the front air guiding portion; the extending tail end of the second air guide piece is flush with or lower than the top end of the front air guide part in the vertical direction.

As a further improvement of an embodiment of the present invention, the dust collection duct further includes a rear suction duct connected to a downstream of the rear suction opening and formed between the rear rolling brush and the first air guide member; and the extending tail end of the second air guide piece extends into the rear air suction duct.

As a further improvement of an embodiment of the present invention, the front air guiding part is at least partially configured as an arc surface matched with the periphery of the front rolling brush, and the rear air guiding part is at least partially configured as an arc surface matched with the periphery of the rear rolling brush;

the longitudinal direction of the first air guide piece is parallel to the rotation axis of the front rolling brush, and two ends of the first air guide piece in the longitudinal direction are fixed on the ground brush shell.

As a further improvement of an embodiment of the present invention, the second air guide includes a second end portion connected to the floor brush casing, and the second end portion is connected to the extension end portion and is configured to be an arc-shaped structure extending along the outer periphery of the rear rolling brush.

As a further improvement of an embodiment of the present invention, the air guiding assembly further includes a third air guiding member located between the front rolling brush and the rear rolling brush, the third air guiding member is located between the front rolling brush and the rear rolling brush, and the third air guiding member is located between the front rolling brush and the rear rolling brush.

As a further improvement of an embodiment of the present invention, a longitudinal direction of the third air guide is parallel to a rotation axis of the front rolling brush, and an extending end of the third air guide forms a plurality of comb teeth arranged along the longitudinal direction thereof.

In order to realize one of the above-mentioned utility model purposes, the utility model provides a dust absorption scrubbing brush, include scrubbing brush casing, main wind channel, locate the round brush subassembly and the air guide component of scrubbing brush casing, the round brush subassembly includes parallel arrangement's leading round brush and rearmounted round brush, the main wind channel by leading round brush with between the rearmounted round brush to the top of rearmounted round brush is extended, its characterized in that, the air guide component includes:

the first air guide piece is positioned between the front rolling brush and the rear rolling brush and comprises a front air guide part and a rear air guide part, the front air guide part guides external air to the main air duct along the periphery of the front rolling brush, the rear air guide part guides the external air to the main air duct along the periphery of the rear rolling brush, and the bottom end of the front air guide part is in contact with a working surface;

and the second air guide piece is used for separating the main air duct and the rear rolling brush so as to separate the air flow flowing out of the front air suction duct from the rear rolling brush.

In order to realize one of the purposes of the utility model, the utility model provides a dust collector, including negative pressure dust extraction, the dust collector still include with negative pressure dust extraction cooperation is connected the dust absorption scrubbing brush.

Compared with the prior art, the utility model discloses following beneficial effect has: the first air guide piece is in contact with a working surface, so that hairs are prevented from entering the rear air suction opening from the lower side of the first air guide piece and being wound on the rear rolling brush; and the second air guide piece extends from the air outlet to the position between the front rolling brush and the rear rolling brush until the extension tail end separates the dust-containing airflow flowing out of the front air suction duct from the rear rolling brush, so that the hairs in the front air suction duct are prevented from contacting the rear rolling brush after flowing out of the front air suction duct, the hairs are effectively prevented from being wound by the rear rolling brush, and the problem that the rear rolling brush is difficult to clean and even is blocked due to hair winding does not exist.

Drawings

FIG. 1 is a perspective view of a dust collecting floor brush of a vacuum cleaner in a first preferred embodiment of the present invention;

FIG. 2 is a schematic sectional view of a dust collecting floor brush of a vacuum cleaner according to a first preferred embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of area A of FIG. 2;

FIG. 4 is a schematic sectional view of a dust collecting floor brush of a vacuum cleaner according to a second preferred embodiment of the present invention;

FIG. 5 is an enlarged partial view of the area Aa in FIG. 4;

FIG. 6 is a schematic sectional view of a dust collecting floor brush of a vacuum cleaner according to a third preferred embodiment of the present invention;

FIG. 7 is a close-up view of the Ab region of FIG. 6;

FIG. 8 is a schematic sectional view of a dust collecting brush of a vacuum cleaner according to a fourth preferred embodiment of the present invention, in which a blocking structure of a first air guide is shown in an upright state;

FIG. 9 is an enlarged partial view of the region Ac of FIG. 8;

FIG. 10 is a schematic sectional view of a dust collecting floor brush of a vacuum cleaner according to a fourth preferred embodiment of the present invention, in which a blocking structure of a first air guide is shown in a forward tilted state;

fig. 11 is a partially enlarged view of the Ac region in fig. 10.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.

Example 1

As shown in figures 1 to 3, the dust-absorbing floor brush of the present invention is introduced. The dust-collecting floor brush is applied to a dust collector such as an upright type dust collector, a horizontal type dust collector, a portable type dust collector, a robot dust collector/sweeper and the like, and the upright type dust collector is taken as an example in the embodiment for description.

The dust-absorbing floor brush comprises a travelling wheel 20, a floor brush shell 10, a rolling brush component, a dust-absorbing air duct and an air guide component.

The floor brush housing 10 is used for supporting and arranging the rest of the components of the dust-collecting floor brush, and is used for matching the dust-collecting floor brush with other mechanisms of the dust collector. Preferably, the floor brush housing 10 includes a floor brush upper shell 11 and a floor brush lower shell 12 assembled at the bottom of the floor brush upper shell 11, and the rolling brush assembly and the air guide assembly are fittingly disposed on at least one of the floor brush upper shell 11 and the floor brush lower shell 12; and, scrubbing brush upper casing 11 and scrubbing brush lower casing 12 enclose out the assembly chamber, dust absorption wind channel, the round brush subassembly and the wind guide assembly can at least partly hold respectively in the assembly chamber.

In this embodiment, the traveling wheel 20 is rotatably connected to the floor brush housing 10, and can drive the whole dust-collecting floor brush to move along the cleaning direction (indicated by arrow V) to assist in completing the cleaning operation. Of course, the road wheels 20 can also be eliminated in a modified suction floor brush. For ease of description, the following directional descriptions of "forward" and "rearward" are all with reference to the direction of sweeping travel.

The rolling brush assembly includes two rolling brushes arranged in parallel in the front-rear direction in the cleaning direction of travel, which are illustrated as a front rolling brush 30 and a rear rolling brush 40 in this application, and it is understood that the front rolling brush 30 is relatively forward in the cleaning direction of travel and the rear rolling brush 40 is relatively rearward in the cleaning direction of travel.

The front roll brush 30 and the rear roll brush 40 are rotatably assembled to the floor brush housing 10, respectively. Specifically, under the driving of the roller brush motor, the front roller brush 30 rotates around the front axis, and the rear roller brush 40 rotates around the rear axis, so that the cleaning of the working surface (as indicated by plane F in the figure) contacted below each other is respectively realized. Wherein the leading axis and the trailing axis are parallel to each other, extend horizontally, and are perpendicular to the sweeping traveling direction.

The rotation direction of the front rolling brush 30 (as indicated by arrow v1 in the figure) and the rotation direction of the rear rolling brush 40 are preferably opposite to each other, and in the present embodiment, the rotation direction of the front rolling brush 30 is the same as the rotation direction of the road wheels 20. Thus, during the cleaning process of the dust-collecting floor brush, the front rolling brush 30 cleans dust/foreign matters contacting the working surface therebelow backward, and the rear rolling brush 40 cleans dust/foreign matters contacting the working surface therebelow forward, so that the dust/foreign matters are gathered between the front rolling brush 30 and the rear rolling brush 40.

Preferably, the front roll brush 30 includes a front roll brush roller 31 and front bristles 32. The front roll brush roller 31 has a cylindrical outer surface whose central axis is the front axis; the front bristles 32 are set on the front roll brush roller 31. Also, the rear roll brush 40 includes a rear roll brush roller 41 and rear bristles 42. The rear roll brush roller 41 has a cylindrical outer surface whose central axis is the rear axis; the rear brush staples 42 are provided on the rear roll brush roller 41.

In the present embodiment, the front bristles 32 have a hardness less than that of the rear bristles 42. For example, the front bristles 32 may be nap and the rear bristles 42 may be flocked or bristled, so that the front bristles 32 can wipe the working surface, and the rear bristles 42 can scrape strong dirt, dust and the like on the working surface, and the two ways are combined to enhance the cleaning effect.

The dust absorption air duct includes an air suction opening, an air outlet 86 and a main air duct 80.

The suction opening is used for communicating the dust collection air duct with the outside of the dust collector, is located between the front rolling brush 30 and the rear rolling brush 40, and is formed at the bottom of the floor brush housing 10, so as to receive dust/foreign matters respectively cleaned by the front rolling brush 30 and the rear rolling brush 40. In the present application, the air suction opening is composed of a front air suction opening 81 and a rear air suction opening 82, which will be described in detail later.

The air outlet 86 may be used to communicate the dust collecting duct with other mechanisms of the dust collector, for example, a dust collecting rigid pipe and a dust collecting hose of the dust collector to a negative pressure dust collector of the dust collector, so as to realize cleaning operation under the driving of negative pressure provided by the negative pressure dust collector. In the present embodiment, the air outlet 86 is located behind the rear roller brush 40, and in an alternative embodiment, the position of the air outlet 86 may be changed to be above the rear roller brush 40.

The main air duct 80 is connected to the upstream of the air outlet 86, that is, the main air duct 80 is located upstream of the air outlet 86 and connected to the air outlet 86, or the air outlet 86 is formed at the end of the main air duct 80, in this embodiment, the main air duct 80 extends from the air outlet 86 to the upper side of the rear rolling brush 40 and the front side of the rear rolling brush 40, and conversely, it extends from the space between the front rolling brush 30 and the rear rolling brush 40 to the upper side of the rear rolling brush 40 and even to the rear side. When the dust-absorbing floor brush is used for cleaning, the dust-containing air flow can enter the dust-absorbing air duct through the air suction opening, and flow along the main air duct 80 until being discharged out of the dust-absorbing air duct from the air outlet 86.

The air guide assembly is arranged on the floor brush shell 10 and used for guiding the dust-containing air flow so that the dust-containing air flow can flow along the dust collection air duct according to an ideal path.

The air guide assembly includes a first air guide 50. The first air guide 50 is arranged at the bottom of the floor brush shell 10 and is positioned between the front rolling brush 30 and the rear rolling brush 40, the air suction opening is divided into a front air suction opening 81 corresponding to the front rolling brush 30 and a rear air suction opening 82 corresponding to the rear rolling brush 40, and the front air suction opening 81 and the rear air suction opening 82 are both communicated with the main air duct 80. Thus, the dust/foreign matter cleaned by the front roller brush 30 can be sucked into the dust suction duct from the front suction opening 81 and then flows into the main duct 80, and the dust/foreign matter cleaned by the rear roller brush 40 can be sucked into the dust suction duct from the rear suction opening 82 and then flows into the main duct 80. That is, the dust/foreign matter cleaned by the front roller brush 30 and the dust/foreign matter cleaned by the rear roller brush 40 can be sucked into the air outlet 86, collected together, and discharged.

In the present application, the first wind guiding member 50 contacts the working surface, so that on one hand, dust/foreign matters (including hairs) cleaned by the front rolling brush 30 can be prevented from entering the rear air suction opening 82 from below the first wind guiding member 50, and further, the hairs can be prevented from being wound on the rear rolling brush 40; on the other hand, the dusty air flows of the front air suction opening 81 and the rear air suction opening 82 can be relatively independent, the respective vacuum degrees of the front air suction opening 81 and the rear air suction opening 82 are ensured, and the cleaning effect is improved. Here, "contact" is not limited to direct contact, and in the case where manufacturing tolerances and assembly tolerances are present, there may be a small distance where the first air guide 50 cannot be ensured to be in direct contact with the working surface, and a case where the first air guide 50 is close to the working surface (for example, 1.5mm) is also referred to as "contact". But this distance can not influence the technical effect of the utility model, the reason lies in, this distance is very little for inhaling the wind channel, and it also can be very little through the amount of wind, so the probability that the hair moved backward through the very little space between first air ducting 50 and the working face is very little, and it is basically the same to the effect of blockking of hair under with "direct contact".

Preferably, the dust suction duct further includes a front suction duct 83 and a rear suction duct 84.

The front air suction duct 83 is connected to the downstream of the front air suction opening 81, that is, the front air suction duct 83 is located at the downstream of the front air suction opening 81 and is connected to the front air suction opening 81, or the front air suction opening 81 is formed at the end (lower end in this embodiment) of the front air suction duct 83, and the dust-containing air flow entering the dust suction duct from the front air suction opening 81 directly enters the front air suction duct 83.

The front suction duct 83 is formed between the front roll brush 30 and the first air guide 50. Specifically, the first air guide 50 includes a front air guide portion 51 corresponding to the front rolling brush 30, the front air suction duct 83 is formed between the front rolling brush 30 and the front air guide portion 51, the outer periphery of the front rolling brush 30 substantially constitutes the front boundary of the front air suction duct 83, and the front air guide portion 51 substantially constitutes the rear boundary of the front air suction duct 83. The front air guide part 51 can guide the external dust-containing airflow to the main air duct 80 along the outer periphery of the front rolling brush 30.

The front air guiding part 51 can guide the dust-containing airflow in the front air suction channel 83, and at least part of the front air guiding part is configured as an arc surface matched with the periphery of the front rolling brush 30, and preferably all of the front air guiding part 51 is configured as an arc surface matched with the periphery of the front rolling brush 30, so that the dust/foreign matters cleaned by the front rolling brush 30 flow along the surface of the front air guiding part 51 after entering the front air suction channel 83 (as indicated by arrows in the figure).

Similarly, the rear suction channel 84 is connected to the downstream of the rear suction opening 82, that is, the rear suction channel 84 is located at the downstream of the rear suction opening 82 and connected to the rear suction opening 82, or the rear suction opening 82 is formed at the end (in this embodiment, the lower end) of the rear suction channel 84, and the dust-containing air flow entering the dust collection duct from the rear suction opening 82 directly enters the rear suction channel 84.

The rear suction duct 84 is formed between the rear roll brush 40 and the first wind guide 50. Specifically, the first air guide 50 includes a rear air guide portion 52 corresponding to the rear rolling brush 40, the rear air suction duct 84 is formed between the rear rolling brush 40 and the rear air guide portion 52, the periphery of the rear rolling brush 40 substantially constitutes the rear boundary of the rear air suction duct 84, and the rear air guide portion 52 substantially constitutes the front boundary of the rear air suction duct 84. The rear air guiding part 52 can substantially guide the external dust-containing airflow to the main air duct 80 along the periphery of the rear roller brush 40.

The rear air guiding portion 52 can guide the dust-containing airflow in the rear air suction channel 84, and at least a part of the rear air guiding portion is configured as an arc surface matched with the periphery of the rear rolling brush 40, and preferably all of the rear air guiding portion is configured as an arc surface matched with the periphery of the front rolling brush 30, so that the dust/foreign matters cleaned by the rear rolling brush 40 enter the rear air suction channel 84 and then flow along the surface of the rear air guiding portion 52 (as indicated by arrows in the figure).

In the present embodiment, the front air guiding part 51 and the rear air guiding part 52 are connected at their upper ends (as shown in the figure, at the top end 501 of the first air guiding member 50), and the two parts form a substantially "figure-eight" structure with the top ends connected. Accordingly, the dust suction duct includes a confluence port 85 formed above the top end 501 of the first air guide 50, and the dust-laden air flow of the front suction duct 83 and the dust-laden air flow of the rear suction duct 84 can meet at the confluence port 85.

Further preferably, the bottom end 502 of the front air guiding part 51 forms the front end 502 of the first air guiding member 50, and the front end is in downward contact with the working surface, so that dust/foreign matters (including hairs) cleaned by the front rolling brush 30 cannot enter the lower part of the first air guiding member 50, but only directly enter the front air suction channel 83, and the hairs are prevented from being wound on the rear rolling brush 40.

Further, the first air guide 50 is provided as a longitudinal member, and the longitudinal direction thereof is parallel to the front axis of the front rolling brush 30.

Further, in the present embodiment, the first wind guide 50 is an integrally formed structure, specifically, is provided as a rib having a substantially triangular cross section perpendicular to the longitudinal direction thereof, and both ends of the first wind guide 50 in the longitudinal direction are fixed to the floor brush housing 10. Of course, the specific molding configuration and/or shape structure and/or connection manner thereof is not limited thereto, as illustrated in the following embodiments 2, 3 and 4.

In addition, in the present application, the air guide assembly further includes a second air guide that separates the main duct 80 and the rear roll brush 40. In the embodiment shown in the drawings, the second wind guide member is exemplified to include the first portion 63 and the body portion 60 which are separately provided, but of course, in a modified embodiment, the second wind guide member may be provided as an integral member (i.e., an integrally molded structure) or as a plurality of portions which are separately provided. The second wind guide extends from the wind outlet 86 to a position between the front rolling brush 30 and the rear rolling brush 40 until the extending end 61 thereof separates the dusty airflow flowing out of the front wind suction channel 83 from the rear rolling brush 40. That is, in the process of continuing flowing along the dust collection duct, the dust-containing airflow flowing out of the front suction duct 83 cannot contact the rear rolling brush 40 all the time due to the blocking effect of the second guide member, so that the problem that the rear rolling brush 40 is difficult to clean and even block due to hair winding is avoided.

Preferably, the extending end 61 of the second wind guide is flush with or lower than the top end of the front wind guide part 51 (i.e. the top end 501 of the first wind guide 50 in this embodiment) in the vertical direction, so as to sufficiently ensure that the dusty airflow flowing out of the front wind suction channel 83 does not contact the rear rolling brush 40. In this embodiment, the extending end 61 of the second wind guide is lower than the top end of the front wind guide part 51 by a distance h; of course, a person skilled in the art can reasonably calculate the effective position where the dusty airflow flowing out of the front air suction duct 83 contacts the second air guide according to the parameters such as the linear rotation speed of the front rolling brush 30 and the power of the negative pressure dust suction device, and further remove the portion from the effective position to the extended end 61 in this embodiment, so as to obtain a variation embodiment where the extended end 61 of the second air guide is slightly higher than the top end of the front air guide part 51 (i.e., the top end 501 of the first air guide part 50 in this embodiment).

Further, in this embodiment, the extending end 61 of the second wind guiding member extends into the rear suction channel 84.

As described above, in the present embodiment, the second air guide includes the first portion 63 and the body portion 60 which are separately arranged, wherein the first portion 63 extends from the air outlet 86 to the upper side of the rear rolling brush 40, and is integrally formed on the upper casing 11 of the floor brush; the extending end 61 of the second wind guide is formed on the body part 60, and the body part 60 is assembled on the lower floor brush shell 12 and is located below the first part 63, and the body part 60 will be described in detail below.

The body portion 60 includes an extended tip 61, a first end 621 and a second end 622 of the second wind guide. The second end 622 is fixed on the lower floor brush shell 12 and located behind the rear rolling brush 40, and is configured as an arc-shaped structure extending along the periphery of the rear rolling brush 40 from the second end 622 to the extension tip 61; the first end 621 is located at the air outlet 86 and assembled on the lower floor brush shell 12, and the first end 621 is tightly attached to the first portion 60, so that the vacuum degree of the dust collection air duct can be enhanced, and the cleaning effect can be ensured.

Further, the air guide assembly further includes a third air guide member 70. The third air guide 70 is located between the front roll brush 30 and the rear roll brush 40, in front of the second air guide, and above the first air guide 50. The upper end of the third wind guide 70 is assembled and fixed on the upper casing 11 of the floor brush, and extends downward from the casing 10 of the floor brush, and the extending end 71 thereof is closely attached to or inserted into the front bristles 32 of the front rolling brush 30, so as to scrape off dust/foreign matters adhered to the front bristles 32, or cut off hairs wound on the front rolling brush 30, so as to clean the front rolling brush 30, and avoid the problem of hair winding of the front rolling brush 30.

The third air guide 70 is provided as a longitudinal member, and the longitudinal direction thereof is parallel to the front axis of the front roll brush 30. Preferably, the extended end of the third wind guide 70 forms a plurality of comb teeth arranged along the longitudinal direction thereof, thereby enhancing the effect of cleaning the front roll brush 30.

To sum up, compare with prior art, the beneficial effect of this embodiment lies in: the first air guide 50 contacts with a working surface, so that hairs are prevented from entering the rear air suction opening 82 from the lower part of the first air guide 50 and being wound on the rear rolling brush 40; and, through setting up the said second air ducting, make the said second air ducting extend to the said leading rolling brush 30 and between the said rear rolling brush 40 from the said air outlet 86, until its extension end 61 will flow out the said dust-laden airstream of the said leading suction channel 83 will be separated from the said rear rolling brush 40, thus prevent the hair in the said leading suction channel 83 from contacting the said rear rolling brush 40 after flowing out the said leading suction channel 83, and then stop the said rear rolling brush 40 from twining the hair effectively, there is not difficult problem of clearing up even stuck of the rear rolling brush 40 because of the hair twines.

Example 2

Referring to fig. 4 and 5, there is shown another preferred embodiment of the present invention, which is the same or similar to embodiment 1, and the same reference numerals are used in this embodiment in combination with the letter "a".

The present embodiment is different from embodiment 1 only in that: the first air guide member has a specific structure. Only this difference will be described in detail below, and the other parts that are the same as those in embodiment 1 will not be described again.

Referring to fig. 5, unlike the first wind guide 50 of embodiment 1, in this embodiment, the first wind guide 50a includes an integrally formed body and a soft rubber structure 53a at least disposed at a front end of the body. The front end 502a of the first air guide 50a is formed on the soft rubber structure 53a, and the soft rubber structure 53a contacts the working surface, so that the soft rubber structure 53a can be properly deformed and closely contacts the working surface, which is more favorable for preventing dust/foreign matters (including hair) swept by the front rolling brush 30a from entering the lower side of the first air guide 50a and improving the effect of preventing the hair from being wound on the rear rolling brush 40a compared with the integrally formed first air guide 50 of embodiment 1.

The bottom surface of the soft rubber structure 53a is provided with a variable part 531a, preferably, the variable part 531a is a groove which is recessed upwards from the bottom surface of the soft rubber structure 53a, so that the variable part 531a is arranged to be more beneficial to the deformation of the soft rubber structure 53a to further closely contact with the working surface.

Further, the body is specifically provided as a rib having a substantially triangular shape in a cross section perpendicular to the longitudinal direction thereof, and both ends of the longitudinal direction of the body are fixed to the floor brush case 10 a. The soft rubber structure 53a may be wrapped around the front end of the body, or preferably, as in this embodiment, the soft rubber structure 53a may be abutted to the front end of the body, so that the front end 502a of the first wind guide 50a is formed on the soft rubber structure 53a to contact with a working surface.

In addition, the front wind guide part 51a is configured as a curved surface matching the outer periphery of the front roll brush 30 b. Unlike the embodiment 1 in which the front air guiding part 51 is formed on the rib body of the first air guiding member 50, in the embodiment, the upper end portion of the front air guiding part 51a is formed on the body of the first air guiding member 50a, and the rest (i.e., the lower end portion) is formed on the soft rubber structure 53a, correspondingly, the top end of the front air guiding part 51a (i.e., the top end 501a of the first air guiding member 50 a) is formed on the body, and the bottom end 502a of the front air guiding part 51a is formed on the soft rubber structure 53 a.

In summary, the first air guide 50a of the present embodiment corresponds to the first air guide 50 of embodiment 1 in which the portion near the tip portion 502 is replaced with the soft rubber structure 53 a.

Example 3

Referring to fig. 6 and 7, there is shown still another preferred embodiment of the present invention, which is the same or similar to embodiment 1, and the same reference numerals are used in this embodiment in combination with the letter "b".

The present embodiment is different from embodiment 1 only in that: the first air guide member has a specific structure. Only the differences will be described in detail below, and the other parts that are the same as those in embodiment 1 will not be described again.

Referring to fig. 7, unlike the first air guide 50 of embodiment 1, the first air guide 50b of the present embodiment includes an integrally formed body and a bristle structure 53b provided at least at a front end portion of the body. The tip 502b of the first air guide 50b is formed on the bristle structure 53b, and the bristle structure 53b contacts the working surface, so that compared with the integrally formed first air guide 50 of embodiment 1, the bristle structure 53b can contact and clean the working surface, which is beneficial to preventing the dust/foreign matters (including hairs) cleaned by the front rolling brush 30b from entering below the first air guide 50b, and improving the effect of preventing the hairs from winding on the rear rolling brush 40 b.

Further, the body is specifically provided as a rib having a substantially triangular shape in a cross section perpendicular to the longitudinal direction thereof, and both ends of the longitudinal direction of the body are fixed to the floor brush case 10 b. The bristle structure 53b may be a sticky strip adhered to the lower portion of the front end of the body, or a flocked bundle disposed below the front end of the body.

In addition, unlike the embodiment 1 in which the pre-air guide part 51 is formed on the rib body of the first air guide 50 and is configured as an arc surface matching the periphery of the pre-rolling brush 30, in the present embodiment, the upper end portion of the pre-air guide part 51b is formed on the body of the first air guide 50b and is configured as an arc surface matching the periphery of the pre-rolling brush 30b, while the rest portion (i.e., the lower end portion) of the pre-air guide part 51b is formed on the bristle structure 53b, and correspondingly, the top end of the pre-air guide part 51b (i.e., the top end 501b of the first air guide 50 b) is formed on the body, and the bottom end 502b of the pre-air guide part 51b is formed on the bristle structure 53 b.

In summary, the first air guide 50b of the present embodiment corresponds to the first air guide 50 of embodiment 1 in which the portion near the tip end 502 is replaced with the bristle structure 53 b.

Example 4

Referring to fig. 8 to 11, there is shown still another preferred embodiment of the present invention, the same or similar features of the members of embodiment 1 are designated by the same reference numerals as in embodiment 1 with the letter "c".

The present embodiment is different from embodiment 1 only in that: the first air guide member has a specific structure. Only the differences will be described in detail below, and the other parts that are the same as those in embodiment 1 will not be described again. Unlike the first wind guide 50 of embodiment 1, which is provided with ribs having a substantially triangular shape in cross section perpendicular to the longitudinal direction thereof and both ends of the longitudinal direction thereof are fixed to the floor brush casing 10, in this embodiment, the first wind guide 50c includes an upper fitting structure 54c and a blocking structure 55c connected below the fitting structure 54c, both ends of the longitudinal direction of the fitting structure 54c are rotatably connected to the floor brush casing 10c around a pivot axis perpendicular to the cleaning traveling direction Vc, the blocking structure 55c is provided as a flat belt having a substantially plate-like shape in cross section perpendicular to the longitudinal direction thereof, the blocking structure 53 is rotatable around the pivot axis in synchronization with the fitting structure 54c and has a vertical state (see fig. 8 and 9) extending perpendicularly to the working surface and the cleaning traveling direction Vc from top to bottom and an inclined state extending obliquely from top to bottom, wherein the inclined state may include either or both of a forward inclined state (see fig. 10 and 11) in which the inclined state extends forward and a backward inclined state in which the inclined state extends backward. In this way, when cleaning, not only the bottom end of the blocking structure 55c can contact the working surface to prevent the hair from passing through the first wind guide 50c and winding around the rear roller brush 40b, but also the state/position of the blocking structure 53c can be adjusted by rotation according to the working surface to enhance the adaptability to different working surfaces.

Further, unlike the configuration of the leading air guiding portion 51 in the embodiment 1, which is an arc surface matching the periphery of the leading rolling brush 30, in the embodiment, the upper end portion of the leading air guiding portion 51c is formed on the mating structure 54c, and the rest (i.e., the lower end portion) is formed on the blocking structure 55 c. Correspondingly, the top end of the front air guiding part 51c (i.e. the top end 501c of the first air guiding component 50 c) is formed on the adapting structure 54c, or the top end of the adapting structure 54c constitutes the top end of the front air guiding part 51c and the top end 501c of the first air guiding component 50 c; the bottom end 502c of the front air guiding part 51c is formed on the blocking structure 55c, or the bottom end of the blocking structure 55c constitutes the bottom end 502c of the front air guiding part 51c and the bottom end of the first air guiding member 50 c.

Of course, as a variation of embodiment 4, both ends of the mating structure 54c in the longitudinal direction may be fixedly connected to the floor brush housing 10c, so that the blocking structure 55c is constantly in any one of the vertical state, the forward inclined state, and the backward inclined state.

It should be understood that although the present description is described in terms of embodiments, not every embodiment includes only a single technical solution, and such description is merely for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments can be appropriately combined to form other embodiments that can be understood by those skilled in the art, for example, the soft gel structure 53a of example 2 or the bristle structure 53b of example 3 is combined in example 4 to obtain an embodiment in which the soft gel structure 53a or the bristle structure 53b is provided at the bottom end of the blocking structure 55c, and other combinations are not enumerated.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (10)

1. A dust-collecting floor brush comprising:

a floor brush housing;

the rolling brush assembly is arranged on the floor brush shell and comprises a front rolling brush and a rear rolling brush which are arranged in parallel;

the dust collection air duct comprises an air suction opening, an air outlet and a main air duct connected to the upstream of the air outlet, the air suction opening is positioned between the front rolling brush and the rear rolling brush, and the air outlet is positioned behind or above the rear rolling brush;

the air guide assembly is arranged on the scrubbing brush shell and comprises a first air guide piece and a second air guide piece for separating the main air duct from the rear rolling brush; the air guide device is characterized in that the first air guide piece is in contact with a working surface and divides the air suction opening into a front air suction opening corresponding to the front rolling brush and a rear air suction opening corresponding to the rear rolling brush; the dust absorption air duct also comprises a front air suction duct connected to the downstream of the front air suction opening, and the front air suction duct is formed between the front rolling brush and the first air guide piece; the second air guide piece extends from the air outlet to a position between the front rolling brush and the rear rolling brush until the extending tail end separates the dust-containing airflow flowing out of the front air suction duct from the rear rolling brush.

2. The dust collection floor brush according to claim 1, wherein a front end of the first air guide member contacts a working surface.

3. The dust-absorbing floor brush according to claim 2, wherein the first wind guide member comprises a body and a soft rubber structure or a bristle structure arranged on the body, and the soft rubber structure or the bristle structure contacts with a working surface.

4. The suction floor brush as claimed in claim 1, wherein the first air guide member comprises:

the two ends of the upper matching structure in the longitudinal direction are rotationally connected to the floor brush shell around the pivot shaft;

the blocking structure is connected with the matching structure, synchronously rotates around the pivot shaft along with the matching structure, is contacted with the working surface, and has a vertical state extending vertically to the working surface from top to bottom and an inclined state extending forwards and/or backwards from top to bottom.

5. The dust-absorbing floor brush according to claim 1, wherein the first air guide member comprises a front air guide part, and the front air suction channel is formed between the front rolling brush and the front air guide part; the extending tail end of the second air guide piece is flush with or lower than the top end of the front air guide part in the vertical direction.

6. The dust-absorbing floor brush according to claim 5, wherein the dust-absorbing air duct further comprises a rear air-absorbing duct connected downstream of the rear air-absorbing opening and formed between the rear roll brush and the first air guide; and the extending tail end of the second air guide piece extends into the rear air suction duct.

7. The dust collecting floor brush as claimed in claim 1, wherein the second air guide member includes a second end portion connected to the floor brush housing, and an arc structure configured to extend along an outer circumference of the rear roll brush from the second end portion to the extended tip.

8. The dust-absorbing floor brush according to claim 1, wherein the air guide assembly further comprises a third air guide member located between the front rolling brush and the rear rolling brush, the third air guide member extends downwards from the floor brush shell, and an extending end of the third air guide member is tightly attached to or inserted into the front rolling brush;

the longitudinal direction of the third air guide is parallel to the rotation axis of the front rolling brush, and the extending tail end of the third air guide forms a plurality of comb teeth which are arranged along the longitudinal direction of the third air guide.

9. The utility model provides a dust absorption scrubbing brush, includes scrubbing brush casing, main wind channel, locates the round brush subassembly and the air guide component of scrubbing brush casing, the round brush subassembly includes parallel arrangement's leading round brush and rearmounted round brush, the main wind channel by leading round brush with between the rearmounted round brush to the top of rearmounted round brush extends, its characterized in that, air guide component includes:

the first air guide piece is positioned between the front rolling brush and the rear rolling brush and comprises a front air guide part and a rear air guide part, the front air guide part guides external air to the main air duct along the periphery of the front rolling brush, the rear air guide part guides the external air to the main air duct along the periphery of the rear rolling brush, and the bottom end of the front air guide part is in contact with a working surface;

and the second air guide piece is used for separating the main air duct and the rear rolling brush so as to separate the air flow flowing out of the front air suction duct from the rear rolling brush.

10. A vacuum cleaner comprising a negative pressure suction device, wherein the vacuum cleaner further comprises a dust-collecting floor brush according to any one of claims 1-9 cooperatively connected with the negative pressure suction device.

Images